CN116584867A - Endoscope hand wheel locking mechanism, endoscope handle and endoscope - Google Patents

Abstract

The invention relates to a hand wheel locking mechanism of an endoscope, an endoscope handle and the endoscope. The hand wheel locking mechanism is used for releasably locking an operation hand wheel for controlling bending on the endoscope handle and comprises a locking rotating part and a locking part, one side of the locking rotating part is coaxially connected with the locking part, the locking part is provided with an elastic structure, the locking part is used for being arranged in the operation hand wheel and fixed on the endoscope handle, the locking rotating part is used for being rotatably arranged on the endoscope handle, and the rotation axis of the locking rotating part is coincident with the rotation axis of the operation hand wheel; when the locking rotating part is driven to rotate, the locking rotating part promotes the elastic structure to deform, and the deformed elastic structure is abutted against the locking operation hand wheel in the radial direction of the operation hand wheel; when the locking rotating part is driven to rotate reversely, the locking rotating part releases the action on the elastic structure, so that the elastic structure is restored to be in an original state, and the operating hand wheel is unlocked. The invention simplifies the mechanical structure of the hand wheel locking and ensures the reliability and stability of the hand wheel locking.

Description

Endoscope hand wheel locking mechanism, endoscope handle and endoscope

technical field

The invention relates to the technical field of medical instruments, more specifically, to a hand wheel locking mechanism of an endoscope, a handle of the endoscope and the endoscope.

Background technique

At present, endoscopes occupy a very important position in minimally invasive surgery, and can be divided into reusable endoscopes and disposable endoscopes. These endoscopes need to be inserted into the human body, and repeated use The premise is that the lens body decontamination (including cleaning and disinfection) is in place, but the lens body contains many small and long complex channels, which is difficult to decontaminate. Therefore, the "consumables" of endoscopes has naturally become a trend in the development of endoscopes, which can be effectively Avoid cross-infection problems during the operation.

An endoscope usually includes an endoscope handle and an insertion part; the insertion part includes a curved structure and a head end structure, the curved structure can swing under the control of the endoscope handle; the head end structure can feedback diagnostic information, and generally integrates lighting, photography, The functions of clamp channel instrument manipulation and other functions are integrated. The handle of the endoscope is equipped with an operating hand wheel that can control the bending structure. When the operating hand wheel is driven to rotate forward and reverse, it can drive the steel wire to move back and forth, thereby realizing the bending operation of the bending structure. The curved structure is elastic. If it is not locked, the curved structure is easy to rebound, which may especially cause unexpected rebound of the endoscope during use, resulting in misoperation by medical staff and medical accidents. For this purpose, the operating handwheel is controllably locked by a handwheel locking device on the handle of the endoscope. However, the existing handwheel locking device has problems such as complex mechanical structure, unreliable locking, and inconvenient installation, and is not conducive to meeting the development requirements of "consumables" for endoscopes.

Therefore, for those skilled in the art, how to design a handwheel locking mechanism with simple structure, low cost, convenient installation and reliable locking effect is a technical problem urgently to be solved at present.

It should be noted that the information disclosed in the background technology section of the application is only intended to deepen the understanding of the general background technology of the application, and should not be considered as an acknowledgment or in any form to imply that the information constitutes information already known to those skilled in the art. current technology.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a handwheel locking mechanism of an endoscope, an endoscope handle and an endoscope, aiming at simplifying the mechanical structure of the handwheel locking, simplifying the installation process, and simultaneously lifting the handwheel Locking reliability and stability.

In order to achieve the above object, the present invention provides a handwheel locking mechanism of an endoscope, which is used for releasably locking the operating handwheel used for bending control on the handle of the endoscope. The handwheel locking mechanism includes a lock Tighten the rotating part and the locking part, the locking rotating part is coaxially connected with the locking part along one side of its own rotation axis, the locking part has an elastic structure; the locking part is used to be arranged on the The operating handwheel is used to be fixed on the endoscope handle; the locking rotating part is used to be rotatably arranged on the endoscope handle; the rotation axis of the locking rotating part is in line with the endoscope handle The axis of rotation of the operating handwheel coincides;

When the locking rotating part is driven to rotate, the locking rotating part promotes the deformation of the lock elastic structure, so that the deformed elastic structure abuts against and locks the operation hand wheel in the radial direction. Handwheel; when the locking rotating part is driven to rotate in reverse, the locking rotating part releases the effect on the elastic structure, so that the elastic structure returns to its original state and unlocks the operating hand wheel.

In one of the embodiments, before the locking rotating part is driven to rotate, the locking part and the locking rotating part are limitedly locked with each other;

When the elastic structure abuts against and locks the operating handwheel, the locking part and the locking rotating part are limitedly locked in the locked position; when the elastic structure is released to unlock the operating handwheel, the The locking part and the locking rotating part are limit-locked in the release position; after the locking rotating part is driven to rotate, the locking rotating part is between the locking position and the releasing position to move between.

In one of the embodiments, one of the locking rotating part and the locking part is provided with a loosening limit part and a locking limit part, and the other is provided with at least one limit fitting part, so The loosening limit portion and the locking limit portion are arranged at intervals on the same circumference;

When the elastic structure abuts against and locks the operating handwheel, the position-limiting part cooperates and locks with the locking position-limiting part; when the elastic structure leaves and unlocks the operating handwheel, the position-limiting part The matching part cooperates and locks with the release limit part; after the locking rotating part is driven to rotate, the limit fitting part moves between the locking limit part and the release limit part switch.

In one of the embodiments, the locking part includes a disc-shaped main body, the disc surface of the disc-shaped main body is provided with a hollow groove, and the hollow groove communicates with the outer peripheral surface of the disc-shaped main body to form an elastic flange. The elastic flange constitutes the elastic structure;

The locking rotating part is provided with an actuating boss on the side facing the disc-shaped main body in the direction of the rotation axis, and the actuating boss is at least partially inserted into the hollow groove, and the hollow groove and the actuating boss The platform is matched to control the deformation of the elastic flange through the cooperation of the actuating boss and the hollow groove.

In one of the embodiments, the inner surface of the actuating boss is provided with a limit protrusion, and the circumferential side wall of the hollow groove is provided with a release limit groove and a lock limit groove at intervals;

When the elastic structure abuts against and locks the operating handwheel, the limiting protrusion cooperates with the locking and limiting groove to lock; when the elastic structure leaves and unlocks the operating handwheel, the limiting protrusion The protrusion cooperates and locks with the release limit groove; after the locking rotating part is driven to rotate, the limit protrusion moves between the lock limit groove and the release limit groove switch.

In one of the embodiments, along the locking direction from the release limiting groove to the locking limiting groove, the radial width of the hollow groove gradually decreases, and the shape of the actuating boss and The size matches the shape and size of the hollow groove.

In one of the embodiments, a transition area is provided on the circumferential side wall of the hollow groove, and the release limiting groove and the locking limiting groove are smoothly connected through the transition area, so The hollow groove also has a stop surface forming an angle with the outer peripheral surface of the disc-shaped main body, the stop surface is located on the side of the release limit groove away from the lock limit groove, and the elastic The flange is located on a side of the locking limiting groove away from the releasing limiting groove.

In one embodiment, part of the outer peripheral surface of the disc-shaped body is formed with a resistance flange, and the resistance flange contacts the operating hand wheel to provide initial damping.

In one of the embodiments, there are multiple resistance flanges, and the multiple resistance flanges are evenly distributed in the circumferential direction of the disc-shaped main body.

In one of the embodiments, there are multiple elastic structures, and the multiple elastic structures are evenly distributed in the circumferential direction of the locking portion.

In one of the embodiments, the locking rotating part includes a coaxially arranged and connected locking wheel and a locking sleeve, and the locking wheel is coaxially connected with the locking part;

After the locking sleeve is driven to rotate, it drives the locking wheel to rotate, and then the locking wheel causes the elastic structure to deform; after the locking sleeve is driven to rotate in the opposite direction, it drives the corresponding locking wheel Reverse rotation, and then the effect on the elastic structure is released by the reverse rotation of the locking wheel.

In one of the embodiments, the locking rotating part includes a locking wrench, the locking wrench has a connected ring part and a wrench part, and the wrench part radially outwards from the outer peripheral surface of the ring part Extending, the annular portion is coaxially connected with the locking portion;

After the wrench part is driven to rotate, it drives the ring part to rotate, and then the ring part promotes the deformation of the elastic structure; after the wrench part is driven to rotate in the opposite direction, it drives the ring part to rotate in the opposite direction, and then The elastic formation is relieved by the counter-rotating annular portion.

In one of the embodiments, the handwheel locking mechanism further includes a pressing sleeve coaxially connected with the locking part, and the pressing sleeve, the locking rotating part and the locking part are all used for Sleeved on the installation structure of the endoscope handle, the press sleeve is used to reduce the movement of the locking part relative to the installation structure.

In one of the embodiments, the locking part is provided with a plurality of auxiliary positioning holes, the axes of the auxiliary positioning holes are parallel to the axis of the installation structure, and the plurality of auxiliary positioning holes are arranged along the axis of the locking part. Evenly arranged in the circumferential direction, the pressing sleeve has pins for inserting into the auxiliary positioning holes, and the pins are set in one-to-one correspondence with the auxiliary positioning holes.

To achieve the above object, the present invention also provides an endoscope handle, which is provided with an operating hand wheel, and the operating hand wheel is provided with any one of the hand wheel locking mechanisms.

In one of the embodiments, the operating handwheel has an inner cavity with an open end, the locking part is located in the inner cavity, the locking rotating part is partially located in the inner cavity, and the endoscope The mirror handle is provided with a mounting structure, the mounting structure is at least partly located in the inner cavity, the locking part and the locking rotating part are sleeved on the mounting structure, and along the Arranged in the axial direction, the elastic structure of the locking part is deformed and abuts against the side wall of the inner chamber around the rotation axis to lock the operating hand wheel.

In one of the embodiments, the operating handwheel is a first direction operating handwheel used to control the bending structure of the endoscope to bend in a first direction, and the inner cavity of the first direction operating handwheel faces away from the The shell direction of the endoscope handle is open, and the locking rotating part includes a coaxially arranged and connected locking wheel and a locking sleeve, and the locking sleeve is arranged at the opening of the inner cavity to cover the inner cavity, The locking wheel is disposed in the inner cavity and sleeved on the installation structure, the locking wheel is located on the side of the locking part away from the housing and is coaxial with the locking part connect.

In one of the embodiments, the operation handwheel is a second direction operation handwheel for controlling the bending structure of the endoscope to bend in a second direction, and the inner chamber of the second direction operation handwheel faces the The shell direction opening of the handle of the endoscope, the locking rotating part includes a locking wrench, the locking wrench has a connected ring part and a wrench part, and the ring part is located in the inner cavity and sleeved on the In the installation structure, the wrench part extends radially outward from the outer peripheral surface of the ring part, and extends to the outside of the second direction operating hand wheel through the opening, and the ring part is located on the The locking part is close to one side of the housing and coaxially connected with the locking part.

In one of the embodiments, the handle of the endoscope is provided with two operating handwheels, and the two operating handwheels are respectively a first direction operating handwheel and a second direction operating handwheel, and the first The direction operation handwheel is used to control the bending structure of the endoscope to bend in the first direction, and the second direction operation handwheel is used to control the bending structure of the endoscope to bend in the second direction. Axially arranged in the axial direction of the operating handwheels, each of the operating handwheels is releasably locked by a corresponding one of the handwheel locking mechanisms.

In order to achieve the above object, the present invention also provides an endoscope, including an endoscope handle, the endoscope handle is provided with an operating hand wheel, and the endoscope described in any one is arranged in the operating hand wheel. Handwheel locking mechanism.

In summary, the endoscope handwheel locking mechanism provided by the present invention includes: a locking rotating part and a locking part, and the locking rotating part is coaxially connected to the locking part along one side of its own rotation axis. part, the locking part has an elastic structure; the locking part is used to be set in the operating hand wheel and fixed on the endoscope handle; the locking rotating part is used to be rotatably set on On the handle of the endoscope; the rotation axis of the locking rotating part coincides with the rotating axis of the operating hand wheel; when the locking rotating part is driven to rotate, the locking rotating part promotes the elastic structure deformed so that the deformed elastic structure abuts and locks the operating handwheel in the radial direction of the operating handwheel; when the locking rotating part is driven to rotate in reverse, the locking rotating part is released The action on the elastic structure, so that the elastic structure returns to its original state to unlock the operating hand wheel.

With such a configuration, when it is necessary to lock the operating handwheel, it is only necessary to control the rotation of the locking rotating part to directly control the elastic deformation of the elastic structure on the locking part to realize the locking of the operating handwheel. The mechanical structure of this locking method It is simple and has a small number of parts. On the premise of ensuring the function of the endoscope, the cost is well controlled, and it is conducive to meeting the development requirements of "consumables" for endoscopes. Also because the number of parts is small, the installation is more convenient. In particular, the locking part is set to have an elastic structure. The unexpected effect is that under the condition that the operating handwheel can be locked laterally, it can reduce the influence of factors such as axial installation error, processing error and clearance on the locking effect. The impact can reduce the installation accuracy requirements of the handwheel locking mechanism, so that the difficulty of production and assembly can be reduced. Since the locking of the operating handwheel is mainly determined by the deformation of the elastic structure, the operating handwheel can be locked reliably and stably, the locking effect is good, and it is not easy to rebound, which can further improve the reliability of endoscope bending control and security.

Because the endoscope provided by the application and the endoscope handle and the handwheel locking mechanism of the endoscope provided by the application belong to the same inventive concept, the endoscope and the endoscope handle provided by the application have the All the advantages of the handwheel locking mechanism of the endoscope, so the beneficial effects of the endoscope and the endoscope handle provided by the present application will not be repeated here.

Description of drawings

Those of ordinary skill in the art will understand that the provided drawings are for better understanding of the present invention, but do not constitute any limitation to the scope of the present invention. in:

FIG. 1 is a schematic structural view of a handwheel locking mechanism of an endoscope according to Embodiment 1 of the present invention;

2 is a schematic diagram of an exploded structure of the handwheel locking mechanism of the endoscope according to Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of the first direction operating handwheel according to Embodiment 1 of the present invention;

Fig. 4a is a schematic structural view of the side facing the locking sleeve on the locking wheel according to Embodiment 1 of the present invention;

Fig. 4b is a schematic structural view of the side facing the locking part of the locking wheel according to Embodiment 1 of the present invention;

Fig. 5 is a schematic structural view of the side facing the locking wheel on the locking part of Embodiment 1 of the present invention;

Fig. 6 is a schematic structural view of a press sleeve according to Embodiment 1 of the present invention;

7 is a schematic structural view of the handwheel locking mechanism of the endoscope according to Embodiment 2 of the present invention;

8 is a schematic diagram of an exploded structure of the handwheel locking mechanism of the endoscope according to Embodiment 2 of the present invention;

Fig. 9 is a schematic structural diagram of the locking rotating part of the second embodiment of the present invention;

Fig. 10 is a schematic structural diagram of the locking part of the second embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a pressure sleeve according to Embodiment 2 of the present invention.

In the attached picture:

1-housing; 2-operation handwheel in the first direction; 21-locking surface of the operation handwheel in the first direction; 22-inner cavity of the operation handwheel in the first direction; 3-handwheel locking mechanism in the first direction; 9- Handwheel locking mechanism in the second direction; 31, 91-locking rotating part; 311-locking wheel; 3111-external gear; 3112-circular mounting hole; 3113-actuating boss; a-actuating boss front end of b-actuating boss; 31131-limiting protrusion; 31132-front face; 31133-inner side; 31134-rear end face; -locking part; 32a-disc-shaped main body; 321-special-shaped mounting hole; 321a-straight edge; 322-elastic structure; 323-hollow groove; Transition area; 3234-stop surface; 3235-locking area; 324-resistance flange; 325-auxiliary positioning hole; 4-installation structure; 41-installation shaft; 413-limit connection; 5-retaining ring; 6-nut; 7-pressure sleeve; 71-pin; 72-center hole; 72a-straight edge; 72b-arc; -Assembly kit; A-one step; B-two steps; 911-locking wrench; 911a-ring part; 911b-wrench part; 911c-inner hole.

Detailed ways

In order to make the purpose, advantages and features of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in very simplified form and not drawn to scale, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In addition, the structures shown in the drawings are often a part of the actual structure. In particular, each drawing needs to display different emphases, and sometimes uses different scales.

As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is usually used in the sense of including "and/or", and the term "several" The term "at least two" is usually used in the sense of including "at least one", and the term "at least two" is usually used in the sense of including "two or more". The operator's end, that is, the distal end that does not enter the body; the term "distal end" is usually the end near the patient, that is, the end that enters the body, "one end" with "the other end" and "proximal end" with "distal end" "Usually refers to the corresponding two parts, which not only includes the endpoints, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two components or an interaction relationship between two components. In addition, as used in the present invention, an element is arranged on another element, usually only means that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the relationship between the two elements can be direct or indirect through an intermediate element. connection, coupling, fit or transmission, but cannot be understood as indicating or implying the spatial positional relationship between two elements, that is, one element can be in any orientation such as inside, outside, above, below or on one side of another element, unless the content Also clearly point out. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The core idea of the present invention is to provide a handwheel locking mechanism of an endoscope, an endoscope handle, and an endoscope to solve the complex mechanical structure and locking problems faced by the handwheel locking of the existing endoscope. Unreliable, inconvenient installation and other issues. The endoscope related to the present invention is a disposable endoscope or a repeatable endoscope.

An endoscope according to the present invention includes an endoscope handle and an insertion portion (not shown) connected to the endoscope handle. The insertion part is used to enter the body to perform corresponding operations, and generally includes an insertion tube, a curved structure, and a head end structure that are sequentially connected axially from the proximal end to the distal end. An endoscope handle is provided at the proximal end of the endoscope to manipulate the insertion portion. For the structure and function of the insertion part, those skilled in the art can refer to the prior art to understand, and this application will not describe it in more detail.

The handle of the endoscope involved in the present invention is provided with at least one operating handwheel, generally, two operating handwheels are provided. The operating handwheel is used for bending control of curved structures. An operating hand wheel can control the curved structure to swing up and down or left and right. When two operating handwheels are used, the two operating handwheels are the first direction operating handwheel and the second direction operating handwheel. The first direction operating handwheel is used to control the bending structure to bend in the first direction, and the second direction The operating handwheel is used to control the bending structure to bend in the second direction, one of the first direction and the second direction is the up-down direction, and the other is the left-right direction. The operating hand wheel for controlling the left and right swing is generally located on the side of the shell of the endoscope handle away from the operating hand wheel for controlling the up and down swing. Usually, when the operator holds the endoscope, the operating handwheel faces upwards. At this time, the operating handwheel for controlling left and right swings is located above the operating handwheel for controlling up and down swings.

Regardless of the number of operating handwheels, a corresponding handwheel locking mechanism is configured for the operating handwheel, and the corresponding handwheel locking mechanism releasably locks the operating handwheel. For a single operating handwheel, its matching handwheel locking mechanism includes a locking rotating part and a locking part. The locking rotating part is coaxially connected to the locking part along one side of its own rotation axis, and the locking part has an elastic structure; The locking part is used to be arranged in the operating handwheel and is used to be fixed on the handle of the endoscope; the locking rotating part is used to be rotatably arranged on the handle of the endoscope; the rotation axis of the locking rotating part and the operating handwheel axis of rotation coincides. During actual use, when the locking rotating part is driven to rotate, the locking rotating part causes the elastic structure on the locking part to deform, so that the deformed elastic structure abuts against the locking operation hand wheel in the radial direction of the operation hand wheel Conversely, when the locking rotating part is driven to rotate in reverse, the locking rotating part releases the effect on the elastic structure, so that the elastic structure returns to its original state and unlocks the operating handwheel.

It should be understood that when there are two operating handwheels, each operating handwheel is controlled by a corresponding handwheel locking mechanism in the above-mentioned manner, and the locking principles of the two operating handwheels are basically the same, both using locking The elastic deformation of the elastic structure on the part prevents the operation handwheel from rotating in the radial direction of the operation handwheel, thereby locking the operation handwheel. It should be noted that the structures of the locking rotating parts corresponding to the two operating handwheels may be the same or different, and the structures of the locking parts corresponding to the two operating handwheels may be the same or different.

Description is made below with reference to the accompanying drawings. Here, it should be particularly noted that in the following description, the operating handwheels that control bending in different directions are defined as the first direction operating handwheel and the second direction operating handwheel. Both the operating handwheel in the first direction and the operating handwheel in the second direction described herein refer to a single operating handwheel, and a single operating handwheel is configured with a corresponding handwheel locking mechanism. For ease of description, the handwheel locking mechanism corresponding to the first direction operation handwheel is defined as the first direction handwheel locking mechanism, and the handwheel locking mechanism corresponding to the second direction operation handwheel is defined as the second direction handwheel locking mechanism.

<Example 1>

Referring to FIGS. 1-2 , the endoscope handle provided by Embodiment 1 of the present invention includes a housing 1 , a first-direction operating handwheel 2 and a first-direction handwheel locking mechanism 3 disposed on the housing 1 . The first direction operating hand wheel 2 may be a shell-like structure, but not limited thereto. The first direction operating handwheel 2 can control the bending structure to bend (ie swing) in a first direction, for example, the first direction is left and right or up and down. In the following description, the operation of the hand wheel 2 in the first direction to control the bending structure to bend left and right is an exemplary illustration.

As shown in Fig. 3, in one embodiment, the first direction operation handwheel 2 is provided with direction marks ΔL and ΔR, ΔL represents the control direction of bending to the left, ΔR represents the control direction of bending to the right, and the arrow indicates the first direction. Direction The direction of rotation of the handwheel 2. Generally, from the top view in FIG. 3 , turning counterclockwise means bending to the left, and turning clockwise means bending to the right.

In addition, the first direction handwheel locking mechanism 3 and the first direction operating handwheel 2 are both arranged outside the housing 1 . Wherein, the first direction handwheel locking mechanism 3 is used for releasably locking the first direction operation handwheel 2 . After the first-direction operating handwheel 2 is locked by the first-direction handwheel locking mechanism 3, the control bending structure remains in the current state and will not rebound easily. The first direction handwheel locking mechanism 3 includes a locking rotating part 31 and a locking part 32 , and the locking rotating part 31 is coaxially connected to the locking part 32 along one side of its own rotation axis.

The locking rotating part 31 is rotatably arranged on the casing 1, and the locking rotating part 31 can rotate around its own rotation axis. Moreover, the rotation axis of the locking rotating part 31 coincides with the rotation axis of the operating hand wheel 2 in the first direction, so as to make the structural layout compact and avoid enlarging the size of the endoscope handle. In this embodiment, the housing 1 is provided with a mounting structure 4, the locking rotating part 31 and the first direction operation hand wheel 2 both rotate around the mounting structure 4, the locking part 32 is sleeved on the mounting structure 4, and the locking part 32 is The position is limited and cannot be moved relative to the installation structure 4. The locking rotation part 31 is also sleeved on the installation structure 4. The locking rotation part 31 is limited and cannot move axially relative to the installation structure 4. The locking rotation part 31 and the locking portion 32 are arranged along the axial direction of the installation structure 4 . Understandably, the installation structure 4 is always fixed, the locking rotating part 31 can only rotate relative to the installation structure 4 , and the locking part 32 can neither rotate nor move relative to the installation structure 4 .

As shown in FIG. 1 and FIG. 2 , the locking portion 32 is located in the first direction operating handwheel 2 and is fixedly arranged on the casing 1 . Moreover, the locking part 32 is located on one side of the locking rotating part 31 , such as above or below or left or right. Generally, when the operator holds the endoscope, both the first direction operation handwheel 2 and the first direction handwheel locking mechanism 3 face upward. below, but not limited to.

The locking part 32 is configured to have an elastic structure 322 (see FIG. 5 ), so as to abut and lock the operating handwheel 2 in the first direction through the elastic deformation of the elastic structure 322. This method has a simple structure and can better reduce parts Quantity, simplifies the installation process, reduces costs, especially the locking effect is reliable and stable.

In more detail, when the locking rotating part 31 is driven to rotate under force, the locking rotating part 31 can cause the elastic structure 322 on the locking part 32 to deform, so that the deformed elastic structure 322 operates the handwheel in the first direction 2 abuts against and locks the first direction operation handwheel 2 in the radial direction, so that the first direction operation handwheel 2 controls the corresponding bending structure of the endoscope to remain in the current state and will not rebound easily; on the contrary, when the locking rotation When the part 31 is forced to be driven to rotate in reverse, the locking rotating part 31 releases the action on the elastic structure 322, so that the elastic structure 322 returns to its original state and unlocks the first direction operation handwheel 2.

With the above structural configuration, the endoscope can realize the locking of the first direction operation hand wheel 2 through the first direction hand wheel locking mechanism 3 with a simple structure, not only the mechanical structure of the hand wheel locking is simpler, but the number of parts is reduced, The installation is more convenient, and under the premise of ensuring the function of the endoscope, the cost has been well controlled, so as to meet the development requirements of "consumables" of the endoscope. In particular, the locking in the radial direction is not easily affected by axial installation errors, machining errors and clearances. Therefore, the installation accuracy requirements of the handwheel locking mechanism can be reduced, and the difficulty of production and assembly of the handwheel locking mechanism can be reduced. get lowered. And because the locking of the operating handwheel is mainly determined by the deformation of the elastic structure 322, the operating handwheel can be locked reliably and stably, the locking effect is good, and it is not easy to rebound, and the bending control of the endoscope can be further improved. reliability and security.

Preferably, at least part of the structural components in the handwheel locking mechanism 3 in the first direction are plastic components, which can further reduce the cost.

As shown in FIG. 3 , the first direction operating hand wheel 2 has an inner cavity 22 with one end open, the locking portion 32 is located in the inner cavity 22 , the locking rotating portion 31 is partially located in the inner cavity 22 , and the inner cavity 22 surrounds The side wall of the rotation axis of the first direction operating handwheel 2 constitutes a locking surface 21 . At this time, the elastic structure 322 of the locking part 32 elastically deforms and abuts against the locking surface 21, thereby locking the first direction operation handwheel 2, and the elastic structure 322 of the locking part 32 returns to its original shape and leaves the locking surface 21, thereby Unlock the first direction operating handwheel 2. Furthermore, the mounting structure 4 is at least partially located in the inner cavity 22 of the first direction operating handwheel 2 .

In this embodiment, in view of the need to further install the second direction operating handwheel 8 described in Embodiment 2 under the first direction operating handwheel 2, the first direction operating handwheel 2 is configured so that the inner cavity 22 faces away from the outer shell 1 Opening in the direction of the first direction operation handwheel 2 so that the inner cavity 22 has a bottom surface and an opening facing the bottom surface, and the opening is upward. At this time, the installation structure 4 enters the inner cavity 22 of the first direction operating hand wheel through the bottom of the inner cavity 22 of the first direction operating hand wheel. Further, part of the structure of the locking rotating part 31 is arranged at the opening of the inner cavity 22 of the operating hand wheel in the first direction to cover the inner cavity 22 and prevent the inner structure from being exposed. The operator also only needs to manipulate the portion of the locking rotating portion 31 that exposes the inner chamber 22 of the operating hand wheel in the first direction, and then the locking rotating portion 31 can be toggled. It should be noted that the inner cavity 22 of the operating handwheel 2 in the first direction may or may not be covered, which may be set according to actual needs.

In some embodiments, the locking rotating part 31 includes a coaxially arranged and connected locking wheel 311 and a locking sleeve 312, the locking sleeve 312 is used to directly drive the locking wheel 311 to rotate, and the locking wheel 311 is used to The elastic configuration 322 of the locking portion 32 is directly controlled. Wherein, the locking wheel 311 is located in the inner cavity 22 of the first direction operation handwheel 2 and is sheathed on the installation structure 4 , and the locking wheel 311 can rotate relative to the installation structure 4 . In addition, the locking wheel 311 is located on the side of the locking portion 32 away from the housing 1 and coaxially connected with the locking portion 32 , that is, the locking portion 32 is located between the locking wheel 311 and the bottom surface of the inner cavity 22 . Preferably, the locking sleeve 312 is disposed at the opening of the inner cavity 22 to cover the inner cavity 22 . With such a configuration, the locking sleeve 312 can be directly forced to drive the locking wheel 311 to rotate around the rotation axis synchronously. In this embodiment, the locking sleeve 312 is forced to be driven to rotate and then drives the locking wheel 311 to rotate, and then the locking wheel 311 causes the elastic structure 322 on the locking part 32 to deform, otherwise, the locking sleeve 312 is driven by force After the reverse rotation, the corresponding reverse rotation of the locking wheel 311 is driven, and then the effect on the elastic structure 322 is released by the counter-rotating locking wheel 311 . Of course, in other embodiments, the locking sleeve 312 can be omitted, so that the locking wheel 311 is directly rotated under force and controls the elastic deformation of the locking portion 32 . Further, after canceling the locking sleeve 312 , the locking wheel 311 itself can cover the inner chamber 22 of the operating hand wheel 2 in the first direction.

The shape of the locking wheel 311 is not limited, as long as the locking wheel 311 can rotate on the installation structure 4 . Similarly, the shape of the locking sleeve 312 is not limited, as long as the locking sleeve 312 can drive the locking wheel 311 to rotate and cover the inner cavity 22 of the first direction operating hand wheel 2 . In the illustrated embodiment, the locking sleeve 312 is configured in a shape similar to a knob, which is convenient for the operator to dial.

Considering actual needs, the locking sleeve 312 is also used to determine the initial position of the handwheel locking mechanism 3 in the first direction, which can represent the shipping status of the endoscope and ensure the consistency of product shipping. For example, the initial position of the locking sleeve 312 is determined according to the unlocking mark. As shown in Figure 2, the unlocking mark ΔF can be set on the locking sleeve 312. If the position of the unlocking mark on the locking sleeve 312 is aligned with the position of the unlocking mark on the locking wrench 911 in the second embodiment, it means The first direction handwheel locking mechanism 3 has been assembled in place. The arrow in ΔF points to the unlocking direction. Generally, the unlocking direction is clockwise, and the first-direction operating handwheel 2 can be released by rotating the locking wheel 311 clockwise.

The locking sleeve 312 and the locking wheel 311 are connected in a suitable way to transmit motion. Optionally, the locking sleeve 312 is meshed with the locking wheel 311 and arranged coaxially. Internal engagement is adopted between the locking sleeve 312 and the locking wheel 311. For example, the inner peripheral side of the locking sleeve 312 is meshed with the outer peripheral side of the locking wheel 311, or the outer peripheral side of the locking sleeve 312 is engaged with the outer peripheral side of the locking wheel 311. Engages on the inner peripheral side. Preferably, the inner peripheral side of the locking sleeve 312 is engaged with the outer peripheral side of the locking wheel 311 , such a structure is easier to realize, so as to reduce manufacturing difficulty and cost. As shown in FIG. 4 a , the locking wheel 311 has external meshing teeth 3111 , and the external meshing teeth 3111 can cooperate with the internal meshing teeth of the locking sleeve 312 . However, the connection manner between the locking wheel 311 and the locking sleeve 312 includes but not limited to the above-mentioned meshing connection, for example, screw connection and the like may also be used.

In this embodiment, the locking part 32, the locking sleeve 312, the locking wheel 311 and the first direction operation handwheel 2 are coaxially arranged, for example, the locking sleeve 312, the locking wheel 311 and the locking wheel 311 are arranged from top to bottom. part 32, and both the locking wheel 311 and the locking part 32 are installed in the inner cavity 22 of the operating hand wheel 2 in the first direction, and the locking sleeve 312 covers the inner cavity 22, the locking part 32 only needs to be in the first direction Lock the operating handwheel 2 in the first direction in the radial direction of the operating handwheel 2. Such a structure is simple, the installation and operation are convenient, the locking effect is good, and the locking is reliable and stable. During assembly, the assembly position is determined according to the unlocking mark on the locking sleeve 312, and after the assembly is in place, the installation of the handwheel locking mechanism 3 in the first direction is completed. In the following description, the locking sleeve 312 and the locking wheel 311 are used as schematic illustrations.

As shown in Figures 1 to 3, the installation structure 4 includes an installation shaft 41, the installation shaft 41 extends from the housing 1 to the inner chamber 22 of the first direction operation handwheel 2, the first direction operation handwheel 2 and the first direction handwheel The wheel locking mechanisms 3 are all arranged around the installation shaft 41 .

In one example, as shown in FIG. 3 and FIG. 5 , the installation shaft 41 has a special-shaped connecting portion 411, and the locking portion 32 has a special-shaped mounting hole 321, and the special-shaped mounting hole 321 cooperates with the special-shaped connecting portion 411 to prevent locking. The movement of the part 32 relative to the mounting shaft 41. The special-shaped mounting hole 321 is for example but not limited to a square hole. Taking a square hole as an illustration, as shown in Figure 5, the special-shaped mounting hole 321 has a straight side 321a, and the adjacent straight sides 321a are connected through a circular arc transition, so that the special-shaped mounting hole 321 and the special-shaped connecting part 411 are closely matched to prevent The locking part 32 is movable relative to the installation shaft 41 .

In one example, as shown in Figure 3 and Figure 4a, the installation shaft 41 has a circular connection part 412, the locking wheel 311 has a circular installation hole 3112, and the circular installation hole 3112 is matched with the circular connection part 412 to This way allows the locking wheel 311 to rotate relative to the mounting shaft 41 .

In one example, as shown in FIG. 3 , the installation shaft 41 has a limit connecting portion 413 for installing a retaining ring 5 that restricts the axial movement of the locking wheel 311 , and the retaining ring 5 is sleeved on the limit connecting portion 413 . The retaining ring 5 can be fixed on the limiting connection part 413 directly by bonding or welding, or indirectly fixed on the limiting connecting part 413 through the nut 6 . In the illustrated embodiment, the limiting connecting portion 413 has an external thread, the retaining ring 5 and the nut 6 are sleeved on the limiting connecting portion 413 , and the nut 6 is threadedly locked with the limiting connecting portion 413 . The retaining ring 5 is disposed on a side of the locking wheel 311 away from the locking portion 32 , and the nut 6 presses against the retaining ring 5 . The retaining ring 5 can prevent the locking wheel 311 from moving away from the locking portion 32 (such as upward), and the nut 6 can restrict the retaining ring 5 from moving away from the locking portion 32 (such as upward).

Preferably, a step is formed between the circular connecting part 412 and the special-shaped connecting part 411 , and the step can limit the movement of the locking wheel 311 along the axis of the installation shaft 41 toward the locking part 32 (such as downward). Preferably, a step is formed between the circular connecting portion 412 and the limiting connecting portion 413 , and the step can limit the movement of the retaining ring 5 along the axis of the installation shaft 41 toward the locking wheel 311 .

It should be known that when the locking rotating part 31 is not operated, the locking wheel 311 and the locking part 32 are kept in a limited locking state, and since the locking part 32 cannot rotate, the rotation of the operating hand wheel 2 in the first direction cannot be achieved. It will drive the locking rotating part 31 to rotate, therefore, the first direction handwheel locking mechanism 3 has a self-locking function, and only when the locking rotating part 31 is directly stressed can it lock or release the operating handwheel 2 in the first direction, and The rotation of the operating handwheel 2 in the first direction will not affect the handwheel locking mechanism 3 in the first direction. Therefore, preferably, before the locking rotating portion 31 is driven to rotate, the locking portion 32 and the locking rotating portion 31 are mutually limited and locked. After limit locking, the locking rotating part 31 cannot rotate relative to the locking part 32, and since the locking part 32 itself cannot rotate, the reliability and stability of the handwheel locking can be improved. It should be understood that when the elastic structure 322 of the locking part 32 locks the operating handwheel, the locking part 32 and the locking rotating part 31 are limitedly locked in the locking position; while the elastic structure 322 of the locking part 32 unlocks the operating handwheel , the locking part 32 and the locking rotating part 31 are limited and locked in the released position. Furthermore, when it is necessary to switch the state, after the locking rotating part 31 is dialed and rotated, the locking rotating part 31 is rotated and switched between the locked position and the released position. Switch between deformations.

As in this embodiment, before the locking sleeve 312 is driven to rotate, the locking part 32 and the locking wheel 311 are mutually limited and locked, that is to say, the elastic structure 322 of the locking part 32 abuts against the locking operation in the first direction When the handwheel 2 is used, the locking part 32 and the locking wheel 311 are limited and locked in the locked position; and when the elastic structure 322 of the locking part 32 leaves the unlocking first direction to operate the handwheel 2, the locking part 32 and the locking The wheel 311 is limited and locked in the released position, and after the locking sleeve 312 is driven to rotate, the locking wheel 311 can be rotated and switched between the locked position and the released position. Correspondingly, the elastic structure 322 of the locking part 32 Toggles between deformed and undistorted.

Further, one of the locking rotating part 31 and the locking part 32 is provided with a release limit part and a lock limit part, and the other is provided with at least one limit fitting part, and the release limit part and the lock The tight limiting parts are arranged at intervals on the same circumference. At this time, when the elastic structure 322 of the locking part 32 abuts against the locking operation handwheel, the limit fitting part cooperates with the locking limit part to lock; when the elastic structure 322 leaves the unlocking operation handwheel, the limit fitting part and the loose The opening limit part cooperates with locking; if the locking rotating part 31 is driven to rotate, the limit matching part moves and switches between the locking limit part and the loose limit part, correspondingly, the elasticity of the locking part 32 Configuration 322 switches between deformed and undeformed. In this way, the limited locking between the locking part 32 and the locking rotating part 31 is realized, and the rotation of the operating handwheel is prevented from affecting the locking rotating part 31, so as to ensure the reliability of locking.

In this embodiment, one of the locking wheel 311 and the locking portion 32 is provided with a loosening limiting portion and a locking limiting portion, and the other is provided with at least one limiting matching portion. Preferably, the locking wheel 311 is provided with a limit matching part, and the locking part 32 is provided with a loosening limit part and a locking limit part.

As shown in FIG. 5 , in one embodiment, the locking portion 32 includes a disc-shaped main body 32 a, and an elastic structure 322 is disposed on the disc-shaped main body 32 a. The elastic structure 322 has a deformed state and an undeformed state, and can be switched between the deformed state and the undeformed state. In the undeformed state, the elastic structure 322 returns to its original shape and unlocks the operating handwheel 2 in the first direction. In the deformed state, the elastic structure 322 elastically deforms and abuts against and locks the operating handwheel 2 in the first direction. Taking the locking wheel 311 as an illustration, the disc-shaped main body 32a is releasably locked in a limited position with the locking wheel 311 until the locking sleeve 312 is forced to drive the locking wheel 311 to rotate relative to the locking part 32 to release the disc-shaped The limit locking between the main body 32a and the locking wheel 311 . After the limit locking is released, the locking wheel 311 can rotate relative to the locking portion 32 to control the deformation of the elastic structure 322 or restore the elastic structure 322 to its original shape. It should be known that when the position is locked, because the locking part 32 cannot rotate, the rotation of the operating handwheel 2 in the first direction will not cause the rotation of the locking rotating part 31 .

The number of elastic structures 322 can be one or more, for example two, three or more than three. Preferably, three resilient formations 322 are employed. Multiple elastic structures 322 are beneficial to ensure the stability and reliability of locking. A plurality of elastic structures 322 are preferably evenly arranged in the circumferential direction, so as to make the locking more stable and reliable. In this embodiment, the number of elastic structures 322 is three, and the three elastic structures 322 are sequentially arranged in the circumferential direction of the locking portion 32 .

Continuing to refer to FIG. 5 , in some embodiments, the disk surface of the disk-shaped main body 32a is provided with a hollow groove 323 , the hollow groove 323 penetrates the outer peripheral surface of the disk-shaped main body 32a and forms an elastic flange, and the elastic flange forms the elastic structure 322 . That is, while the hollow groove 323 is processed and formed on the disc surface, the elastic flange can also be formed, which has a simple structure and is convenient for processing. Cooperating with this, as shown in Figure 4b, the locking wheel 311 is provided with an actuating boss 3113 on the side facing the locking part 32 in the direction of the rotation axis, the actuating boss 3113 is at least partially inserted into the hollow groove 323, and the hollow groove 323 It matches with the actuating boss 3113 to control the deformation of the elastic structure 322 through the cooperation of the actuating boss 3113 and the hollow groove 323 . The shape and size of the actuating boss 3113 generally match the shape and size of the hollow groove 323 .

As shown in Figure 5, in a preferred embodiment, the loosening limit part is the loosening limit groove 3231, the locking limit part is the locking limit groove 3232, and the limit matching part is the limit protrusion 31131. The release limit groove 3231 and the lock limit groove 3232 are arranged on the circumferential side wall of the hollow groove 323 , and the limit protrusion 31131 is arranged on the inner surface of the actuating boss 3113 . Such a position-limiting structure is easy to process and realize. Understandably, the release limiting groove 3231 is located in the unlocking area of the hollow groove 323 , the locking limiting groove 3232 is located in the locking area 3235 of the hollow groove 323 , and the locking limiting groove 3232 is adjacent to the elastic structure 322 .

As shown in FIG. 4 b , a limiting protrusion 31131 is provided on the inner side of the actuating boss 3113 , and the limiting protrusion 31131 can be selectively matched with one of the releasing limiting groove 3231 and the locking limiting groove 3232 . When the limiting protrusion 31131 cooperates with the loosening limiting groove 3231, the front end a of the actuating boss 3113 has left the locking area 3235, and the elastic structure 322 will not be actuated to be deformed, so that the elastic structure 322 is in an undeformed state; When the limiting protrusion 31131 cooperates with the locking limiting groove 3232, the front end a of the actuating boss 3113 enters the locking area 3235, actuating the deformation of the elastic structure 322, so that the elastic structure 322 is in a deformed state.

Therefore, when the elastic structure 322 locks the operating handwheel 2 in the first direction, the limit projection 31131 cooperates with the locking limit groove 3232 to lock; if the elastic structure 322 unlocks the operation handwheel 2 in the first direction, the limit projection 31131 Cooperate with the release limit groove 3231 to lock. When switching is required, the locking rotating part 31 is operated to rotate again, so that the limiting protrusion 31131 moves and switches between the locking limiting groove 3232 and the releasing limiting groove 3231 .

Referring to FIG. 5 , in some embodiments, along the locking direction from the loosening limiting groove 3231 to the locking limiting groove 3232 , the radial width of the hollow groove 323 gradually decreases. Correspondingly, as shown in FIG. 4b, along the direction from the rear end b to the front end a of the actuating boss 3113, the radial width of the outer contour of the actuating boss 3113 also gradually decreases. Therefore, the actuating boss 3113 The shape and size of the hollow slot 323 match the shape and size. This makes the limit projection 31131 move from the loose limit groove 3231 to the lock limit groove 3232, the front end a of the actuating boss 3113 gradually acts on the elastic structure 322, so that the elastic structure 322 is elastically deformed, then During the movement of the limiting protrusion 31131 from the locking limiting groove 3232 to the releasing limiting groove 3231, the front end a of the actuating boss 3113 gradually releases the control on the elastic structure 322, so that the elastic structure 322 gradually returns to its original shape.

It should be noted that in other embodiments, the position limiting protrusion 31131 and the corresponding limiting groove (including the loosening limiting groove 3231 and the locking limiting groove 3232 ) can be exchanged so that the actuating boss 3113 A single limit groove is formed on the top, and a release limit protrusion and a lock limit protrusion are formed on the circumferential side wall of the hollow groove 323, where the limit groove plays the role of the limit protrusion 31131, and the loose The opening limit protrusion replaces the release limit groove, the lock limit protrusion replaces the lock limit groove, and basically the same operation is used to realize the locking and loosening of the elastic structure 322 .

As shown in FIG. 5 , a transition zone 3233 is further provided on the circumferential sidewall of the hollow groove 323 , and the transition zone 3233 is located between the release limiting groove 3231 and the locking limiting groove 3232 . The transition zone 3233 is used to smoothly connect the loosening limit groove 3231 and the locking limit groove 3232, which can reduce the rotation resistance of the locking wheel 311 to improve the comfort of operation, and at the same time facilitate the smooth operation of the actuating boss 3113. The ground moves and switches in the hollow groove 323, so that the limit protrusion 31131 can be smoothly engaged in place, avoiding the situation that the limit protrusion 31131 is not engaged in place, and thus the stability and reliability of locking can be improved. The transition area 3233 can be understood as a circular arc surface without depression or protrusion, which can form a certain buffer between the release limit groove 3231 and the lock limit groove 3232, which is conducive to the gradual reduction or recovery of the elastic structure 322 undisturbed. Furthermore, the hollow groove 323 also has a stop surface 3234 that forms an angle with the outer peripheral surface of the disc-shaped main body 32a. It is located on the side of the locking limiting groove 3232 away from the releasing limiting groove 3231 . The setting of the stop surface 3234 is beneficial to block the actuating boss 3113 and prevent the actuating boss 3113 from continuing to move toward the unlocking direction. The unlocking direction is along the direction from the locking limiting groove 3232 to the releasing limiting groove 3231 .

As shown in Figure 5, the elastic structure 322 preferably has an arc-shaped outer surface. In the undeformed state, the diameter of the outer surface of the elastic structure 322 is smaller than the diameter of the outer peripheral surface of the disc-shaped main body 32a, so that the elasticity in the undeformed state A gap is formed between the outer side of the formation 322 and the locking surface 21 . Preferably, a resistance flange 324 is formed on the outer peripheral surface of the disc-shaped main body 32a, and the resistance flange 324 contacts the locking surface 21 of the first direction operating hand wheel 2 to provide initial damping. It can be understood that the diameter of the outer peripheral surface of the disc-shaped main body 32a is large or small, thereby forming a resistance flange 324, the diameter of the resistance flange 324 is larger than the diameter of the elastic structure 322 in the undeformed state, so that the resistance flange 324 can always be contact with the locking face 21. The resistance flange 324 can apply initial resistance to the operation hand wheel 2 in the first direction, so as to prevent the head end structure of the endoscope from rebounding suddenly and damage the inner cavity wall of the human body. The setting of the resistance flange 324 also facilitates providing feedback to the operator and reduces operating errors. The number of resistance flanges 324 may correspond to the number of elastic structures 322. Preferably, the number of resistance flanges 324 is multiple, and the multiple resistance flanges 324 are evenly distributed in the circumferential direction of the disc-shaped main body 32a. In this embodiment, three resistance flanges 324 are selected, and the resistance flanges 324 are disposed adjacent to the stop surface 3234 .

As mentioned above, the shape and size of the actuating boss 3113 matches the shape and size of the hollow groove 323 . Specifically, as shown in FIG. 4 b , the actuating boss 3113 is surrounded by a front end surface 31132 , an inner surface 31133 , a rear end surface 31134 and an outer arc surface 31135 in sequence. Wherein, the radial width of the outer arc surface 31135 gradually increases along the direction from the front end surface 31132 to the rear end surface 31134, that is, the distance from the outer arc surface 31135 to the center of the locking wheel 311 is along the path from the front end a to the rear end b gradually increased. In addition, the rear end surface 31134 is used to abut against the stop surface 3234, and a narrow front end a is formed at the front end surface 31132, and the front end a enters the narrow locking area 3235 at the hollow groove 323 to promote the elastic deformation of the elastic structure 322, and the front end a leaves After the narrow locking area 3235 at the hollow groove 323, the elastic structure 322 returns to its original shape.

The number of the actuating bosses 3113 corresponds to the number of the elastic structures 322 , each elastic structure 322 is correspondingly provided with a hollow groove 323 , and the actuating bosses 3113 and the hollow grooves 323 match one by one.

As shown in Figures 1 to 3, combined with Figure 6, the first direction locking mechanism 3 further includes a compression sleeve 7 coaxially connected with the locking portion 32, the compression sleeve 7 and the locking portion 32 are detachable or not detachable ground connection. The pressing sleeve 7 can be sleeved on the installation structure 4 . The pressing sleeve 7 can further compress the locking portion 32 in the radial direction of the installation structure 4 , preferably preventing the locking portion 32 from moving relative to the installation structure 4 . Preferably, the pressing sleeve 7 is detachably connected to the locking portion 32 . There are many ways of detachable connection between the pressing sleeve 7 and the locking part 32, and at least one can be selected for implementation.

Exemplarily, as shown in FIG. 5 , the locking portion 32 is provided with a plurality of auxiliary positioning holes 325 , the axes of the auxiliary positioning holes 325 are parallel to the axis of the installation shaft 41 , and the plurality of auxiliary positioning holes 325 are arranged along the axis of the locking portion 32 . Evenly distributed around the circumference. Preferably, three auxiliary positioning holes 325 are provided. As shown in FIG. 6 , the pressing sleeve 7 has pins 71 for inserting into the auxiliary positioning holes 325 , the number of the pins 71 corresponds to the number of the auxiliary positioning holes 325 , and the pins 71 and the auxiliary positioning holes 325 are set in one-to-one correspondence. Further, the pressure sleeve 7 is sheathed on the installation shaft 41 , for example, the shape of the central hole 72 of the pressure sleeve 7 is consistent with that of the special-shaped connection portion 411 . During assembly, the pin 71 of the pressure sleeve 7 is inserted into the auxiliary positioning hole 325 , and the central hole 72 cooperates with the special-shaped connection portion 411 of the installation shaft 41 to prevent the pressure sleeve 7 from rotating around the axis of the installation shaft 41 .

It should be noted that when the locking part 32 is made of silicon rubber or other soft materials, it may be displaced due to deformation. Therefore, the locking part 32 adopts a pressing sleeve 7 made of a harder material, and the pressing sleeve 7 The use is to assist the locking part 32 to perform rotation stop. Of course, in other embodiments, if the locking portion 32 itself is not easily deformed, the pressure sleeve 7 can also be omitted. Therefore, according to the material of the locking portion 32 , it is selected whether to install the compression sleeve 7 , if the compression sleeve 7 is used, the compression sleeve 7 can strengthen the fixing between the locking portion 32 and the installation structure 4 .

Next, the locking and releasing process of the operating handwheel 2 in the first direction will be described in more detail in combination with several preferred embodiments.

During the process of rotating the locking sleeve 312 from loosening (that is, unlocking) to locking, the locking sleeve 312 drives the locking wheel 311 to rotate synchronously. After the locking wheel 311 rotates, the limiting protrusion 31131 of the locking wheel 311 escapes from the loosening limiting groove 3231 of the disc-shaped main body 32a, passes through the transition zone 3233 and reaches the locking limiting groove 3232 . Synchronously, the front end a of the actuating boss 3113 of the locking wheel 311 gradually approaches the locking area 3235 , and finally abuts against the narrowest position of the locking area 3235 . Synchronously, the rear end surface 31134 of the locking wheel 311 leaves the stop surface 3234 - and gradually moves away until the farthest position. Synchronously, the outer arc surface 31135 of the locking wheel 311 gradually cuts into the locking area 3235 and resists the elastic structure 322, causing the elastic structure 322 to gradually expand and deform outwardly. When the limiting protrusion 31131 of the locking wheel 311 reaches the locking When the limit groove 3232 is opened, the elastic structure 322 expands outward and deforms to a set maximum value. At this time, the outwardly expanded part of the elastic structure 322 is close to the side wall of the inner cavity 22 of the operating hand wheel 2 in the first direction. In this state, when the handwheel 2 is turned in the first direction, the disk-shaped main body 32a prevents the rotation of the handwheel 2 in the first direction, thereby achieving a locking effect. At this time, since the limiting projection 31131 of the locking wheel 311 is stuck in the locking limiting groove 3232 of the disc-shaped main body 32a, in the locked state, the rotation of the operating handwheel 2 in the first direction will not drive the locking wheel. 311 and locking sleeve 312 rotate.

During the process of turning the locking sleeve 312 from locking to loosening, the locking sleeve 312 drives the locking wheel 311 to rotate synchronously. The limiting protrusion 31131 of the locking wheel 311 escapes from the locking limiting groove 3232 of the disc-shaped main body 32a, passes through the transition zone 3233 and reaches the releasing limiting groove 3231 . Synchronously, the front end a of the locking wheel 311 moves away from the locking area 3235 gradually, and finally reaches the furthest position. Synchronously, the rear end surface 31134 of the locking wheel 311 gradually approaches the stop surface 3234 and finally abuts against the stop surface 3234 . Synchronously, the outer arc surface 31135 of the locking wheel 311 gradually moves away from the locking area 3235 and away from the elastic structure 322, so that the elastic structure 322 gradually restores its deformation inward. When the groove 3231 is formed, the elastic structure 322 recovers and deforms inwardly to reach the initial position. At this time, the elastic structure 322 returns to the initial position inwardly, and the outer surface of the elastic structure 322 is far away from the side wall of the inner cavity 22 of the operating handwheel 2 in the first direction. In this state, when the operating handwheel 2 in the first direction is turned, the disc-shaped main body 32a basically does not prevent the rotation of the operating handwheel 2 in the first direction. loosening effect. Similarly, since the limiting protrusion 31131 of the locking wheel 311 is stuck in the loosening limiting groove 3231 of the disc-shaped main body 32a, in the released state, the rotation of the operating handwheel 2 in the first direction will not drive the locking wheel. 311 and locking sleeve 312 rotate.

It should also be explained that in this embodiment, the structure of the handwheel locking mechanism is optimized as a locking sleeve 312, a locking wheel 311 and a disk-shaped locking part 32 with its own elastic flange. The unexpected effect is that it can be locked In the case of operating the handwheel 2 in the first direction, the mechanical structure of the handwheel locking can be better simplified, the number of parts can be reduced, and the cost can be reduced. In addition, during the assembly process, there is basically no need for complicated adjustments, which saves assembly time. In addition, because the locking of the operating handwheel 2 in the first direction is mainly determined by the deformation of the elastic structure 322, it is basically not affected by factors such as axial installation errors, machining errors, and clearances, which not only reduces the installation accuracy of the handwheel locking mechanism Requirements, so that the difficulty of production and assembly can be reduced, and the operation handwheel can be locked reliably and stably, the locking effect is good, and it is not easy to rebound, and the reliability and safety of endoscope bending control can be further improved.

<Example 2>

Please refer to Fig. 7 to Fig. 11, the endoscope, endoscope handle and handwheel locking mechanism provided by the second embodiment of the present invention are the same as the endoscope, endoscope handle and handwheel locking mechanism provided by the first embodiment The structures and locking methods are basically the same, and the same parts will not be described, and only the differences will be described below. In addition, for ease of understanding and description, the symbols of some structures in the second embodiment continue to use the symbols of the corresponding structures in the first embodiment.

As shown in Figures 7 to 11, different from Embodiment 1, in the endoscope, endoscope handle and handwheel locking mechanism provided in Embodiment 2, the second direction is used to operate the handwheel 8, and the second direction is operated The hand wheel 8 can control the bending structure to bend in the second direction. As in this embodiment, the second direction operation hand wheel 8 can control the bending structure to bend up and down, which is an exemplary illustration.

As shown in FIG. 8 , in some embodiments, the second direction operating hand wheel 8 is provided with direction signs ΔU and ΔD, ΔU indicates the upwardly curved manipulation direction, ΔD represents the downwardly curved manipulation direction, and the arrow indicates the second direction Direction of rotation of the operating handwheel 8. Generally, viewed from the top view in FIG. 8 , turning counterclockwise means bending upwards, and turning clockwise means bending downwards.

The second direction operating hand wheel 8 is releasably locked by the second direction locking mechanism 9 . The second direction locking mechanism 9 and the first direction locking mechanism 3 work independently of each other without affecting each other. The second direction locking mechanism 9 includes a locking rotating part 91 and a locking part 92 . The structure of the locking portion 92 in the second direction locking mechanism 9 and the structure of the locking portion 32 in the first direction locking mechanism 3 may be the same or different, and in the following description, the same structure is used as an example to demonstrate to explain.

When the locking rotating part 91 in the locking mechanism 9 in the second direction is driven to rotate, the locking rotating part 91 causes the elastic structure 322 of the locking part 92 to deform, and the deformed elastic structure 322 operates the handwheel 8 in the second direction. radially abut against and lock the second direction operating handwheel 8, so that the second direction operating handwheel 8 controls the corresponding bending structure of the endoscope to maintain the current state and will not easily rebound; when the locking rotating part 91 is locked When the reverse rotation is driven, the locking rotating part 91 releases the effect on the elastic structure 322 , so that the elastic structure 322 of the locking part 92 returns to its original state to unlock the second direction operation handwheel 8 . The locking rotating part 91 is coaxially connected with the locking part 92 along one side of its own rotation axis, and the locking rotating part 91 is rotatably arranged on the housing 1; the locking part 92 is located in the inner chamber of the operating handwheel 8 in the second direction , and fixedly arranged on the shell 1.

Different from the first embodiment, as shown in FIG. 9 , the locking rotating part 91 of the second direction locking mechanism 9 includes a locking wrench 911 , which is different from the locking wheel 311 and the locking sleeve 312 of the first embodiment. In more detail, the locking wrench 911 has a connected ring portion 911a and a wrench portion 911b, both of which are, for example but not limited to, integrated or monolithic in design, and can also be assembled separately. The wrench part 911b is used to directly drive the locking wrench 911 to rotate under force, and then the ring part 911a directly controls the deformation of the elastic structure 322 of the locking part 92 . Conversely, after the wrench part 911b is driven to rotate in reverse, it drives the ring part 911a to rotate in a corresponding reverse direction, and then the ring part 911a that rotates in reverse releases the effect on the elastic structure 322, so that the elastic structure 322 returns to its original shape. Actually, the wrench portion 911b extends radially outward from the outer peripheral surface of the annular portion 911a, and extends to the outside of the second direction operation handwheel 8 through the inner chamber opening of the second direction operation handwheel 8 . The operator only needs to operate the wrench part 911b to turn the locking wrench 911 to rotate. In this embodiment, the annular portion 911a is located in the inner cavity of the operating handwheel 8 in the second direction, and is sheathed on the installation structure 4, and the annular portion 911a is located on the side of the locking portion 92 close to the housing 1 and locked with the locking portion 92. The portion 32 is connected coaxially. Optionally, the wrench part 911b is provided with an unlocking mark ΔF.

It should be noted that if it is necessary to set the first direction operation handwheel 2 at the same time, at this time, the inner cavity of the second direction operation handwheel 8 can be set to open toward the direction of the shell 1 (see Figure 7), and the installation structure 4 passes through After operating the inner cavity of the handwheel 8 in the second direction, enter the inner cavity 22 of the operating handwheel 2 in the first direction from the bottom of the inner cavity 22 of the operating handwheel 2 in the first direction, so that the two handwheel locking mechanisms share the installation structure 4, and coaxial arrangement, compact structure, small overall size. The locking portion 92 is located between the ring portion 911 a and the top surface of the inner chamber of the second direction operating handwheel 8 . Thus, the side wall of the inner cavity of the second direction operating handwheel 8 surrounding the rotation axis constitutes the locking surface of the second direction operating handwheel 8. At this time, the elastic structure 322 of the locking part 92 is elastically deformed and then contacts and abuts against the second direction. The locking surface of the two-direction operating handwheel 8 is used to lock the second-direction operating handwheel 8 , and the elastic structure 322 of the locking portion 92 returns to the original state and leaves the locking surface, thereby unlocking the second-direction operating handwheel 8 .

In this embodiment, the inner cavity of the second direction operating handwheel 8 does not need to be covered, because the second direction operating handwheel 8 itself has a top surface, and the opening of the inner cavity faces the shell 1, so that the second direction operating handwheel 2 The structures in the lumen are not exposed. Therefore, there is no need to provide the locking sleeve 312 of the first embodiment, the structure can be simpler, and the number of parts can be reduced.

During assembly, an assembly kit 11 is optionally provided. The assembly set 11 is directly or indirectly sheathed on the installation shaft 41 , and then the locking part 92 and the locking wrench 911 are installed on the assembly set 11 . For example, the second direction operating handwheel 8 itself is formed with an internal hollow column (not marked) that can pass through the installation shaft 41, and the internal hollow column is arranged in the inner cavity of the second direction operating handwheel 8, and on the internal hollow column As for the matching 11, please refer to Fig. 7 for details. At this time, both the locking part 92 and the locking wrench 911 are directly installed on the assembly kit 11 . The assembly kit 11 can be further provided with a step, through the step limit locking part 92 and the locking wrench 911, so the retaining ring 5 and the nut 6 of the first embodiment are not required.

As shown in FIG. 7 , as an example, the assembly part 11 has a step A, and the ring portion 911 a of the locking wrench 911 is directly engaged with the step A and can freely rotate around the step A. As shown in FIG. 9 , the locking wrench 911 has a circular inner hole 911c, and the inner hole 911 is directly sleeved at the first step A. As shown in FIG. As an example, the assembly set 11 has a second step B, and the locking portion 92 directly cooperates with the second step B, and remains relatively stationary with the assembly set 11 . The cross-sectional shape of the two-stage step B matches the shape of the special-shaped mounting hole 321 of the locking portion 92 , so as to prevent the locking portion 92 from rotating. Referring to the orientation shown in Figure 7, the axes of the second step B and the first step A coincide, the locking part 92 is located above the locking wrench 911, and the wrench part 911b of the locking wrench 911 operates the handwheel 8 from the second direction. The bottom protrudes to be operable.

Optionally, the locking portion 92 is detachably or non-detachably installed with a compression sleeve 7 , and the compression sleeve 7 is located on a side (such as above) of the locking portion 92 away from the locking wrench 911 . As shown in FIG. 11 , in this embodiment, the central hole 72 of the press sleeve 7 can be configured as a special-shaped hole, such as but not limited to a square hole. Indicated by a square hole, the central hole 72 of the pressure sleeve 7 is formed by connecting a straight edge 72a and an arc 72b, so that the pressure sleeve 7 and the assembly part 11 are closely combined.

It should be known that the locking wrench 911 , the locking portion 92 and the connection relationship between them are basically the same as those in the first embodiment, which will not be described in detail here.

Similar to the principle of the locking wheel 311 in Embodiment 1, as shown in FIG. 9 , the locking wrench 911 is provided with an actuating boss 3113 on the side facing the locking part 92 in the direction of the rotation axis, and the inner surface of the actuating boss 3113 31133 is provided with a limit protrusion 31131. The number of actuating bosses 3113 of the locking wrench 911 is multiple, and the plurality of actuating bosses 3113 of the locking wrench 911 are preferably evenly arranged along the circumferential direction of the locking wrench 911. Preferably, three actuating bosses are selected. Boss 3113.

In the locking wrench 911 , the actuating boss 3113 is also surrounded by the front end surface 31132 , the inner surface 31133 , the rear end surface 31134 and the outer arc surface 31135 in sequence. Wherein, the radial width of the outer arc surface 31135 gradually increases along the direction from the front end surface 31132 to the rear end surface 31134, and the distance from the outer arc surface 31135 to the center of the ring portion 911a gradually increases along the path from the front end a to the rear end b. big. In addition, the rear end surface 31134 is used to abut against the stop surface 324, and a narrow front end a is formed at the front end surface 31132. After the front end a enters the narrow locking area 3235 at the hollow groove 323, the elastic deformation of the elastic structure 322 is promoted, and the front end a After leaving the narrow locking area 3235 at the hollow groove 323, the elastic structure 322 returns to its original shape.

As shown in FIG. 10 , the structure of the locking portion 92 of this embodiment is the same as that of the locking portion 92 of the first embodiment, and will not be described in detail. Please refer to the first embodiment for details.

Next, the locking and releasing process of the operating handwheel 8 in the second direction will be described in more detail in combination with the preferred embodiment.

During the process of turning the locking wrench 911 from loosening to locking, the limit protrusion 31131 of the locking wrench 911 is released from the loosening limit groove 3231 of the locking part 92, and reaches the locking limit groove through the transition area 3233 3232. Synchronously, the front end a of the actuating boss 3113 of the locking wrench 911 gradually approaches the locking area 3235 , and finally abuts against the narrowest position of the locking area 3235 . Synchronously, the rear end surface 31134 of the locking wrench 911 leaves the stop surface 3234 and gradually moves away until reaching the furthest position. Synchronously, the outer arc surface 31135 of the locking wrench 911 gradually cuts into the locking area 3235 and abuts against the elastic structure 322, causing the elastic structure 322 to gradually expand and deform outwardly. When the limit protrusion 31131 of the locking wrench 911 reaches the locking When the limiting groove 3232 is opened, the elastic structure 322 expands outward and deforms to a set maximum value. At this time, the outwardly expanded part of the elastic structure 322 is in close contact with the inner chamber side wall of the operating handwheel 8 in the second direction. In this state, when the second-direction operating handwheel 8 is turned, the locking portion 92 prevents the rotation of the second-direction operating handwheel 8, thereby achieving a locking effect. At this time, since the limit protrusion 31131 of the locking wrench 911 is stuck in the locking limit groove 3232 of the locking part 92, in the locked state, the rotation of the operating handwheel 8 in the second direction will not drive the locking wrench. 911 turns.

During the process of turning the locking wrench 911 from locking to loosening, the limit protrusion 31131 of the locking wrench 911 escapes from the locking limit groove 3232 of the locking part 92, passes through the transition zone 3233 and reaches the loosening limit groove 3231. Synchronously, the front end a of the locking wrench 911 moves away from the locking area 3235 gradually, and finally reaches the farthest position. Synchronously, the rear end surface 31134 of the locking wrench 911 gradually approaches the stop surface 3234 and finally abuts against the stop surface 3234 . Synchronously, the outer arc surface 31135 of the locking wrench 911 gradually moves away from the locking area 3235 and away from the elastic structure 322, so that the elastic structure 322 gradually recovers its deformation inwardly. When the limit protrusion 31131 of the locking wrench 911 reaches the release limit When the groove 3231 is formed, the elastic structure 322 recovers and deforms inwardly to reach the initial position. At this time, the elastic structure 322 returns to the initial position inwardly. In this state, when the second-direction operating handwheel 8 is turned, the locking portion 92 does not prevent the rotation of the second-direction operating handwheel 8 , so it has the effect of loosening. At this time, since the limit protrusion 31131 of the locking wrench 911 is stuck in the loosening limit groove 3231 of the locking part 92, in the released state, the rotation of the operating handwheel 8 in the second direction will not drive the locking wrench. 911 turns.

It should be noted that the structure and principle of the second direction handwheel locking mechanism 9 in the second embodiment are basically the same as the structure and principle of the first direction handwheel locking mechanism 3 in the first embodiment. Therefore, the relevant implementation The parts not described in detail in Example 2 can refer to Example 1.

Similarly, in the second embodiment, the structure of the handwheel locking mechanism is optimized as a locking wrench 911 and a disk-shaped locking part 92 with its own elastic flange. The unexpected effect is that the handwheel 8 can be locked in the second direction. In some cases, the mechanical structure of the handwheel locking can be better simplified, the number of parts can be reduced, the cost can be reduced, and in the assembly process, there is basically no need for complicated adjustments, which saves assembly time. And because the locking of the operating handwheel 8 in the second direction is mainly determined by the deformation of the elastic structure 322 on the disk-shaped locking part 92, it is basically not affected by factors such as axial installation errors, machining errors and clearances, and not only reduces the The installation accuracy requirements of the handwheel locking mechanism can reduce the difficulty of production and assembly, and can also lock the operating handwheel reliably and stably. reliability and safety.

In summary, the endoscope, endoscope handle and handwheel locking mechanism provided by the present invention can realize the locking of the operating handwheel through a handwheel locking mechanism with a simpler structure, not only the mechanical structure of the handwheel locking It is simpler, the number of parts is reduced, and the installation is more convenient. On the premise of ensuring the function of the endoscope, the cost is well controlled, so as to meet the development requirements of "consumables" of the endoscope. Preferably, when some structural parts in the locking assembly are made of plastic parts, the cost can be further reduced. In particular, the locking method provided by the present invention is not easily affected by axial installation errors, machining errors and clearances. Not only does the installation accuracy requirement decrease, the installation is more convenient, but also the locking effect is good, the locking is more stable and reliable, and it is not easy to Rebound, good reliability and safety.

The "first" and "second" mentioned in this article are only used for description, and it cannot be understood that "first" and "second" must exist at the same time. In some cases, only "first" or "second" may appear. Two", in some cases, "first" and "second" can appear at the same time. The "radial" mentioned in this article refers to the direction perpendicular to the axis of rotation, which can also be understood as the diameter direction; the "axial" refers to the direction along the axis of rotation; the "circumferential" refers to the direction around The direction of the axis of rotation.

The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosures belong to the protection scope of the technical solution of the present invention.

Claims (20)

1. A handwheel locking mechanism of an endoscope, used for releasably locking an operating handwheel for controlling bending on the endoscope handle, characterized in that the handwheel locking mechanism includes a locking rotating part and a locking part, the locking rotating part is coaxially connected to the locking part along one side of its own rotation axis, and the locking part has an elastic structure; the locking part is used to be arranged on the operating hand and fixed on the handle of the endoscope; the locking rotating part is used to be rotatably arranged on the handle of the endoscope; the rotation axis of the locking rotating part is connected with the operating hand wheel The axis of rotation coincides; When the locking rotating part is driven to rotate, the locking rotating part promotes the deformation of the elastic structure, so that the deformed elastic structure abuts and locks the operating hand wheel in the radial direction of the operating hand wheel. wheel; when the locking rotating part is driven to rotate in reverse, the locking rotating part releases the effect on the elastic structure, so that the elastic structure returns to its original state and unlocks the operating hand wheel. 2. The handwheel locking mechanism of an endoscope according to claim 1, characterized in that, before the locking rotating part is driven to rotate, the locking part and the locking rotating part limit each other. combine; When the elastic structure abuts against and locks the operating handwheel, the locking part and the locking rotating part are limitedly locked in the locked position; when the elastic structure is released to unlock the operating handwheel, the The locking part and the locking rotating part are limit-locked in the release position; after the locking rotating part is driven to rotate, the locking rotating part is between the locking position and the releasing position to move between. 3. The handwheel locking mechanism of an endoscope according to claim 2, wherein one of the locking rotating part and the locking part is provided with a loosening limit part and a locking limit part. position part, the other is provided with at least one limit fitting part, and the release limit part and the locking limit part are arranged at intervals on the same circumference; When the elastic structure abuts against and locks the operating handwheel, the position-limiting part cooperates and locks with the locking position-limiting part; when the elastic structure leaves and unlocks the operating handwheel, the position-limiting part The matching part cooperates and locks with the release limit part; after the locking rotating part is driven to rotate, the limit fitting part moves between the locking limit part and the release limit part switch. 4. The handwheel locking mechanism of an endoscope according to any one of claims 1-3, wherein the locking part comprises a disc-shaped main body, and the disc surface of the disc-shaped main body is provided with a hollow groove, The hollow groove communicates with the outer peripheral surface of the disc-shaped body to form an elastic flange, and the elastic flange constitutes the elastic structure; The locking rotating part is provided with an actuating boss on the side facing the disc-shaped main body in the direction of the rotation axis, and the actuating boss is at least partially inserted into the hollow groove, and the hollow groove and the actuating boss The platform is matched to control the deformation of the elastic flange through the cooperation of the actuating boss and the hollow groove. 5. The handwheel locking mechanism of endoscope according to claim 4, characterized in that, the inner surface of the actuating boss is provided with a limit protrusion, and the circumferential side wall of the hollow groove is spaced apart. It is equipped with a loosening limit groove and a locking limit groove; When the elastic structure abuts against and locks the operating handwheel, the limiting protrusion cooperates with the locking and limiting groove to lock; when the elastic structure leaves and unlocks the operating handwheel, the limiting protrusion The protrusion cooperates and locks with the release limit groove; after the locking rotating part is driven to rotate, the limit protrusion moves between the lock limit groove and the release limit groove switch. 6. The handwheel locking mechanism of an endoscope according to claim 5, characterized in that, along the locking direction from the loosening limit groove to the locking limit groove, the hollow groove The radial width gradually decreases, and the shape and size of the actuating boss match the shape and size of the hollow groove. 7. The handwheel locking mechanism of an endoscope according to claim 5, wherein a transition zone is also provided on the circumferential side wall of the hollow groove, and the release limit groove and the lock The tight limit grooves are smoothly connected through the transition zone, and the hollow groove also has a stop surface at an angle with the outer peripheral surface of the disc-shaped main body, and the stop surface is located at the loose limit position. The slot is on a side away from the locking limiting groove, and the elastic flange is located on a side of the locking limiting groove away from the releasing limiting groove. 8. The handwheel locking mechanism of an endoscope according to claim 4, wherein a resistance flange is formed on the outer peripheral surface of the disc-shaped main body, and the resistance flange contacts the operating handwheel to provide initial damping. 9. The handwheel locking mechanism of an endoscope according to claim 8, characterized in that, the number of the resistance flanges is multiple, and a plurality of the resistance flanges are arranged in the circumferential direction of the disc-shaped main body. Evenly distributed. 10. The handwheel locking mechanism of an endoscope according to any one of claims 1-3, characterized in that there are multiple elastic structures, and multiple elastic structures are located on the locking part. evenly distributed around the circumference. 11. The handwheel locking mechanism of an endoscope according to any one of claims 1-3, wherein the locking rotating part comprises a coaxially arranged and connected locking wheel and a locking sleeve, so that The locking wheel is coaxially connected with the locking part; After the locking sleeve is driven to rotate, it drives the locking wheel to rotate, and then the locking wheel causes the elastic structure to deform; after the locking sleeve is driven to rotate in the opposite direction, it drives the corresponding locking wheel Reverse rotation, and then the effect on the elastic structure is released by the reverse rotation of the locking wheel. 12. The handwheel locking mechanism of an endoscope according to any one of claims 1-3, wherein the locking rotating part comprises a locking wrench, and the locking wrench has a connected ring part and a wrench portion, the wrench portion extends radially outward from the outer peripheral surface of the annular portion, and the annular portion is coaxially connected with the locking portion; After the wrench part is driven to rotate, it drives the ring part to rotate, and then the ring part promotes the deformation of the elastic structure; after the wrench part is driven to rotate in the opposite direction, it drives the ring part to rotate in the opposite direction, and then The elastic formation is relieved by the counter-rotating annular portion. 13. The handwheel locking mechanism of an endoscope according to any one of claims 1-3, further comprising a compression sleeve coaxially connected with the locking portion, the compression sleeve, the Both the locking rotating part and the locking part are used to sleeve on the installation structure of the endoscope handle, and the pressing sleeve is used to reduce the movement of the locking part relative to the installation structure. 14. The handwheel locking mechanism of an endoscope according to claim 13, wherein the locking part is provided with a plurality of auxiliary positioning holes, and the axes of the auxiliary positioning holes are aligned with the axes of the mounting structure. In parallel, a plurality of auxiliary positioning holes are evenly arranged along the circumference of the locking part, and the pressing sleeve has pins inserted into the auxiliary positioning holes, and the pins correspond to the auxiliary positioning holes one by one. set up. 15. An endoscope handle, provided with an operating hand wheel, characterized in that, the operating hand wheel is provided with the endoscope hand wheel locking mechanism according to any one of claims 1-14. 16. The endoscope handle according to claim 15, wherein the operating hand wheel has an inner cavity with one end open, the locking part is located in the inner cavity, and the locking rotating part is partially Located in the inner cavity, the endoscope handle is provided with a mounting structure, the mounting structure is at least partly located in the inner cavity, the locking part and the locking rotating part are sleeved on the On the installation structure and arranged along the axial direction of the installation structure, the elastic structure of the locking part is deformed and abuts against the side wall of the inner cavity around the rotation axis to lock the operating hand wheel. 17. The endoscope handle according to claim 16, wherein the operating handwheel is a first direction operating handwheel for controlling the bending structure of the endoscope to bend in a first direction, and the first The inner cavity of the direction operation handwheel faces away from the opening of the shell of the endoscope handle, and the locking rotating part includes a coaxially arranged and connected locking wheel and a locking sleeve, and the locking sleeve is arranged on the The opening of the inner cavity is used to cover the inner cavity, the locking wheel is arranged in the inner cavity and sleeved on the installation structure, and the locking wheel is located at a side of the locking part away from the outer shell. side and is coaxially connected with the locking portion. 18. The endoscope handle according to claim 16, characterized in that, the operating handwheel is a second direction operating handwheel for controlling the bending structure of the endoscope to bend in a second direction, and the second The inner chamber of the direction operation handwheel opens toward the outer shell of the endoscope handle, the locking rotating part includes a locking wrench, and the locking wrench has a connected ring part and a wrench part, the ring The wrench part is located in the inner cavity and sleeved on the installation structure, and the wrench part extends radially outward from the outer peripheral surface of the ring part, and extends to the operating handle in the second direction through the opening. The outer part of the wheel, the annular part is located on the side of the locking part close to the housing and coaxially connected with the locking part. 19. The endoscope handle according to claim 16, characterized in that, the endoscope handle is provided with two operating handwheels, and the two operating handwheels are respectively the first direction operating handwheel and the first direction operating handwheel. The operating handwheel in the second direction is used to control the bending structure of the endoscope to perform bending in the first direction, and the operating handwheel in the second direction is used to control the bending structure of the endoscope to perform the second bending. The direction is curved, and the two operating handwheels are coaxially arranged in the axial direction of the operating handwheel, and each of the operating handwheels is releasably locked by a corresponding one of the handwheel locking mechanisms. 20. An endoscope, comprising an endoscope handle, the endoscope handle is provided with an operating hand wheel, characterized in that, the operating hand wheel is provided with the Endoscope hand wheel locking mechanism.