CN115816352A - Telescopic screwdriver used in narrow space - Google Patents

Abstract

The present invention relates to a retractable screwdriver for narrow spaces, which includes a hand-held part and an operating part, and the operating part further includes: a cutting head family, each cutting head has an operating end and a first connecting end; a blade bar has a rod body and The second connecting end is arranged at one end of the rod body, and the second connecting end is detachably connected to the first connecting end; the fixing sleeve is set on the outside of the blade head and the blade rod, and the front end surface of the fixing sleeve is set to match the screw to be assembled. Slot-shaped, the front side of the fixed sleeve is provided with a T-shaped window, the vertical part of the T-shaped window is connected with the slot, and a threaded sleeve is set on the outer side of the rear end of the fixed sleeve, and the blade rod passes through the threaded sleeve to connect to the handle ; The spring is set on the outside of the blade bar and is located in the fixed sleeve, and the spring is linked with the fixed sleeve and the threaded sleeve to form a telescopic mechanism. The screwdriver of the present invention can be used for assembling small-sized screws in a working condition with a deep position and a narrow space, without manually stabilizing the screws, thereby improving production efficiency.

Description

A retractable screwdriver for narrow space

technical field

The invention belongs to the technical field of screwdrivers, in particular to a retractable screwdriver used in a narrow space.

Background technique

During the screw assembly process, the commonly used tool is a manual screwdriver. A screwdriver is a common tool used to turn a screw to hold it in place. It usually has a thin wedge-shaped head that can be inserted into a slot or notch in the screw head. During normal use, the screw to be assembled is stabilized by hand and put into the threaded hole, and then the thin wedge-shaped head is inserted into the top of the screw for tightening and fixing. However, in the actual assembly process, it is often encountered that the smaller screws are installed in a deeper position and a narrower space. Under this working condition, it is difficult to hold the small screw firmly by hand, and the screw cannot be inserted into the corresponding threaded hole.

In the prior art, magnetic screwdrivers are used to absorb screws for assembly. However, the screwdriver corresponding to the small screw is relatively weak in magnetism and insufficient in suction. For the narrow assembly space, the screw cannot be stably installed in the designated hole. efficiency.

Contents of the invention

Aiming at the deficiencies in the related art, the present invention provides a retractable screwdriver for narrow space, to solve the problem of difficult to hold the screw by hand when assembling small screws in a deep position and narrow space. The problem of stable installation.

A retractable screwdriver for narrow spaces, comprising: a handle part and an operating part, and the operating part further includes:

a family of cutting heads, each cutting head having an operating end and a first connecting end;

The blade rod has a rod body and a second connection end arranged at one end of the rod body, and the second connection end is detachably connected to the first connection end;

The fixed sleeve is set on the outside of the blade head and the blade bar. The front end surface of the fixed sleeve is set in the shape of a slot matching the screw to be assembled. The front side of the fixed sleeve is provided with a T-shaped window. The vertical part of the T-shaped window is connected with a The word card slot is connected, and a threaded sleeve is set on the outer side of the rear end of the fixed sleeve, and the blade rod passes through the threaded sleeve to connect to the hand-held part;

The spring is set on the outside of the blade rod and is located in the fixed sleeve, and the spring is linked with the fixed sleeve and the threaded sleeve to form a telescopic mechanism, so that when the threaded sleeve is pushed, the blade head is retracted into the fixed sleeve. After the screw to be assembled is fixed, the threaded sleeve is loosened, and the blade head protrudes to tighten the screw to be assembled.

The technical solution solves the problem that it is difficult to hold the screw firmly by hand and install the screw to a designated position when assembling small screws in a working condition with a deep position and a narrow space.

In some of these embodiments, the diameter of the blade head is smaller than the diameter of the blade shank. The technical scheme is used to ensure the assembling space of the spring, so as to achieve the purpose of realizing the expansion and contraction of the blade head in the threaded sleeve.

In some of these embodiments, the threaded sleeve is threadedly connected with the fixed sleeve. The technical proposal is used to make the assembly of the spring more convenient.

In some of these embodiments, the threaded sleeve includes a third connection end and a fourth connection end, the third connection end is a second groove, and the surface of the vertical part of the second groove is provided with threads engaged with the fixing sleeve; the fourth connection end is a through hole, and the through hole communicates with the second groove. The technical scheme realizes the connection between the threaded sleeve and the blade rod, and ensures that the blade head retracts into the fixed sleeve when the threaded sleeve is pushed.

In some of these embodiments, the handle is a handle. This scheme makes the operation more convenient.

In some of the embodiments, the blade heads are several different types of different types of blade heads, and this solution enables the screwdriver to operate different types of screws, which improves the scope of application.

In some of these embodiments, the first connecting end is a first groove, the second connecting end is a boss, and the boss is inserted into the first groove to connect the cutting head and the cutting bar. This solution connects the blade head with the blade rod for easy disassembly, and can quickly replace blade heads of different models and specifications.

In some of these embodiments, the size of the T-shaped window is larger than the size of the screw to be assembled. This solution ensures that the screw to be assembled is placed in the fixing sleeve.

In some of the embodiments, the width of the slot is smaller than the diameter of the screw to be installed. This solution can clamp the nut of the screw to be installed in the fixing sleeve, and the threaded rod body at the front end protrudes from the fixing sleeve for installation.

In some of these embodiments, the fixing sleeve is configured as a sleeve structure. This scheme makes the overall beauty of the screwdriver, and facilitates the relative movement of the blade head and the blade bar.

In some of these embodiments, the length of the spring is the same as the length of the rod in the fixing sleeve. This solution enables the threaded sleeve to push the spring to achieve the relative movement of the fixed sleeve and the blade head.

Based on the above technical solution, the screwdriver applied to the working condition of deep position and narrow space in the embodiment of the present invention solves the problem that the screw cannot be manually stabilized and installed to the designated position under this working condition, and improves the installation efficiency. production efficiency.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the front view and the sectional view of the present invention being used for the installation state of the retractable screwdriver in a narrow space;

Fig. 2 is an enlarged view of the T-shaped window and the slot of the slot when the present invention is used for the telescopic screwdriver clamping screw in a narrow space;

Fig. 3 is an exploded view of the telescopic screwdriver used in a narrow space according to the present invention;

Fig. 4 is a perspective view of the retractable screwdriver fixing sleeve used in a narrow space according to the present invention;

Fig. 5 is a schematic diagram of two kinds of blade head structures of the retractable screwdriver used in a narrow space according to the present invention;

Fig. 6 is a structural schematic diagram of the retractable screwdriver blade rod in a narrow space according to the present invention;

In the picture:

1. Hand-held part; 2. Operation part; 3. Screw; 11. Blade head; 12. Blade rod; 13. Fixed sleeve; 14. Thread sleeve; 15. Spring; 21. Handle; 111. Operation end; 112. Second One connection end; 1121, first groove; 113, cutter head; 121, rod body; 122, second connection end; 1221, boss; end; 1411, the second groove; 142, the fourth connecting end; 1421, the through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first", "second", and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include one or more of these features.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1-4, the present invention provides a retractable screwdriver for narrow spaces, including a handle part 1 and an operating part 2, wherein the operating part further includes: a blade head 11, a blade shaft 12, a fixed sleeve 13 and spring 14.

Each cutting head 11 has an operating end 111 and a first connecting end 112;

The blade bar 12 has a rod body 121 and a second connecting end 122 arranged at one end of the rod body 121, the second connecting end 122 is detachably connected to the first connecting end 112; it can be understood that the blade rod 12 and the cutting head 11 can be Disassemble the connection, when the specifications and sizes of the screws 3 to be installed are different, the matching blade head 11 can be replaced; and the blade head 11 needs to go deep into a narrow space, and the length of the blade bar 12 can also extend the entire screwdriver outward , increasing the overall height for easy operation.

The fixed sleeve 13 is set on the outside of the blade head 11 and the blade bar 12. The front end surface of the fixed sleeve 13 is set to a slot 131 matching with the screw 3 to be assembled. Further, the front end side of the fixed sleeve 13 is provided with a T-shaped Window 132, the vertical part 1321 of the T-shaped window communicates with the slot 131, a threaded sleeve 14 is sleeved outside the rear end of the fixed sleeve 13, and the blade bar 12 passes through the threaded sleeve 14 to connect to the handle 1; it can be understood that, The fixing sleeve 13 is used for fixing and separating the screw 3 and the screwdriver. As in this embodiment, the screw 7 enters the inside of the fixed sleeve 13 from the T-shaped window 132 of the fixed sleeve 13, and then the nail head part protrudes from the slot 131, and then the operating end 111 of the blade head 11 is pressed against the screw 3 and the nut. The pattern is fixed. After the screw 7 has been installed, it is disassembled along the T-shaped window 132 to complete the disengagement between the screw 3 and the screwdriver.

Spring 15 is sleeved outside the blade bar 12 and is positioned in the fixed sleeve 13, and a telescopic mechanism formed by spring 15, fixed sleeve 13 and threaded sleeve 14 interlockingly makes the blade head retract in the fixed sleeve 13 when the threaded sleeve 14 is pushed. After the front end of the fixed sleeve 13 is fixed to the screw 3 to be assembled, the threaded sleeve 14 is unclamped, and the blade head 11 stretches out and tightens the screw 3 to be assembled. It can be understood that the spring 15 is used to expand and contract the fixing sleeve 13 to achieve the purpose of clamping the screw 3 , so that the screw 3 , the fixing sleeve 13 and the blade head 11 are connected together.

To further illustrate, push the threaded sleeve 14 to keep the blade head 11 away from the T-shaped window 132 of the fixed sleeve 13, load the screw 3 into the T-shaped window 132, and make the slot 131 clamp the threaded part of the screw 3, and loosen the fixed sleeve 13. Make the fixed sleeve 13 spring back through the spring 15 and make the blade head 11 press against the slot 131. Turn the operating part 2 to install the screw 3 into the corresponding threaded hole. After the screw 3 is installed in place, push the threaded sleeve 14 again, disassemble the screwdriver along the T-shaped window 132, and complete the assembly of the screw 3.

The above exemplary embodiment realizes the installation of screws in a relatively deep and narrow space, solves the problem that the screws are difficult to handle due to their short length, and improves the installation efficiency.

As shown in FIG. 1 , in some embodiments, the diameter of the blade head 11 is smaller than the diameter of the blade shank 12 . This exemplary embodiment realizes the installation of spring 15, and the diameter of blade head 11 is smaller than the diameter of blade shank 12, and spring 15 is installed in the gap between fixed sleeve 13 and blade shank 12, ensures that blade head 11 is inside fixed sleeve 13 shrinkage.

As shown in FIG. 1 , in some embodiments, the threaded sleeve 14 is threadedly connected with the fixed sleeve 13 . It can be understood that this embodiment provides a connection method between the threaded sleeve 14 and the fixed sleeve 13, which facilitates the disassembly and assembly of the spring 15, and the spring 15 of different specifications can be replaced to change the clamping force of the screw 3 to be installed.

As shown in FIG. 3 , in some embodiments, the threaded sleeve 14 includes a third connection end 141 and a fourth connection end 142, the third connection end 141 is a second groove 1411, and the vertical part of the second groove 141 is arranged on the surface The thread engaged with the rear end of the fixing sleeve 13 ; the fourth connecting end 142 is a through hole 1421 , and the through hole 1421 communicates with the second groove 1411 . This exemplary embodiment realizes the connection between the threaded sleeve 14 and the fixed sleeve 13 .

As shown in FIG. 3 , in some embodiments, the handle 1 is a handle 21 . When the handle 21 is turned, the handle 21 drives the blade bar 12, and then drives the blade head 11 to rotate, so as to achieve the function of tightening the screw 3 at the operating end 111. This exemplary embodiment realizes the convenience of operation.

As shown in FIG. 5 , in some embodiments, the cutter head 11 is several different types of cutter heads 113 of different models. Different types and types of cutter heads 113 are adapted to different types and types of screws, so as to improve the applicability of the device.

As shown in Figures 5-6, in some embodiments, the first connection 112 is a first groove 1121, the second connection end 122 is a boss 1221, and the boss 1221 is inserted into the first groove 1121 to connect the cutting edge 11 Connect with blade bar 12. This exemplary embodiment realizes the detachable connection between the blade head 11 and the blade rod 12, which facilitates the replacement of the blade head 11 to adapt to different types and types of screws.

As shown in FIG. 2, in some embodiments, the size of the T-shaped window 132 is larger than the size of the screw to be assembled. It can be understood that, in order to facilitate the screws to be assembled to enter the interior of the fixing sleeve 13 .

As shown in FIG. 2 , in some embodiments, the width of the slot 131 is smaller than the screw diameter of the screw to be installed. It can be understood that the threaded part of the screw to be assembled is guaranteed to protrude from the slot 131, and the nail head part is stuck inside the slot 131; it can also be understood that the slot 131 divides the screw to be assembled into two parts , the threaded part is outside the fixing sleeve 13, and the nail head part is inside the fixing sleeve 13. Realized the preliminary fixing of screw 3 and screwdriver.

In some embodiments, the fixing sleeve 13 is configured as a sleeve structure. It can be understood that the inner and outer surfaces of the sleeve structure are smooth and round, and the spring 15 is arranged inside. Since the spring 15 is a cylindrical structure as a whole, the inner surface can be better installed with the spring 15 . This exemplary embodiment better realizes the function of the spring 15 and has a beautiful appearance.

As shown in FIG. 4 , the length of the spring 15 is the same as the length of the rod body 121 inside the fixing sleeve 13 . It can be understood that the threaded sleeve 14 can push the spring 15 to ensure relative movement between the fixed sleeve 13 and the cutting head 11 .

To further illustrate, the spring 15 can be replaced according to different specifications of the screw 3 to be installed. Specifically, the screw 3 has a larger specification, and the spring 3 with a longer length can be selected to meet the thrust.

Through the description of multiple embodiments of a retractable screwdriver used in a narrow space of the present invention, it can be seen that an embodiment of a retractable screwdriver used in a narrow space of the present invention has at least one or more of the following advantages:

1. The present invention solves the problem that when installing screws in a deep and narrow space, the screw length is short and difficult to handle, and improves the installation efficiency;

2. The present invention is compact in structure, easy to operate, saves working hours and costs, and expands the operating space for subsequent production.

Finally, it should be noted that each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation of the present invention can still be carried out Modification or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, all of them shall be included in the scope of the technical solution claimed in the present invention.

Claims (10)

1. A retractable screwdriver for narrow spaces, comprising: a hand-held part and an operating part, characterized in that: the operating part further includes: a family of cutting heads, each cutting head having an operating end and a first connecting end; The blade rod has a rod body and a second connection end arranged at one end of the rod body, and the second connection end is detachably connected to the first connection end; The fixed sleeve is set on the outside of the blade head and the blade bar. The front end surface of the fixed sleeve is set in the shape of a slot matching the screw to be assembled. A T-shaped window is set on the front side of the fixed sleeve. The vertical part of the T-shaped window communicates with the slot, a threaded sleeve is sleeved outside the rear end of the fixed sleeve, and the blade rod passes through the threaded sleeve to connect to the handle; The spring is set on the outside of the blade rod and is located in the fixed sleeve, and the spring is linked with the fixed sleeve and the threaded sleeve to form a telescopic mechanism, so that when the threaded sleeve is pushed, the blade head retracts In the fixed sleeve, after the front end of the fixed sleeve fixes the screw to be assembled, loosen the threaded sleeve, and the blade head protrudes to tighten the screw to be assembled. 2 . The retractable screwdriver for narrow spaces according to claim 1 , wherein the diameter of the end surface of the blade head is smaller than the diameter of the end surface of the blade shank. 3 . 3 . The retractable screwdriver for narrow spaces according to claim 1 , wherein the threaded sleeve is threadedly connected with the fixed sleeve. 4 . 4. A retractable screwdriver for narrow spaces according to claim 3, characterized in that: the threaded sleeve includes a third connection end and a fourth connection end, and the third connection end is a second groove , and the surface of the vertical part of the second groove is provided with a screw thread engaged with the fixing sleeve; the fourth connecting end is a through hole, and the through hole communicates with the second groove. 5 . The telescopic screwdriver for narrow spaces according to claim 1 , wherein the handle is a handle. 6 . 6. A retractable screwdriver for narrow spaces according to claim 1, characterized in that: the cutting heads are several different types and models. 7. A retractable screwdriver for narrow spaces according to claim 1, characterized in that: the first connection end is a first groove, the second connection end is a boss, and the boss inserting into the first groove to connect the blade head with the blade bar. 8. A retractable screwdriver for narrow spaces according to claim 1, characterized in that: the size of the T-shaped window is larger than the size of the screw to be assembled. 9. A retractable screwdriver for narrow spaces according to claim 1, characterized in that: the width of the slot is smaller than the screw diameter of the screw to be installed. 10 . The retractable screwdriver for narrow spaces according to claim 1 , wherein the length of the spring is the same as the length of the rod in the fixing sleeve. 11 .

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