CN103284505A - Backrest tilting structure supporting the human waist - Google Patents

Abstract

The invention relates to a backrest tilting structure for supporting the waist of a human body, which is provided with a group of spring stepless control units arranged at the tail ends of butterfly seats at the bottom of a seat, wherein a bearing part formed at the rear side of each spring stepless control unit is fixedly arranged at the lower end of a support plate with preset width and extension length, two hollow pipe sections are formed at intervals between upper sections of the support plate, the backrest is characterized in that the backrest is arranged in parallel with a connecting pipe section arranged at the gravity center part at the rear side of the backrest, two hollow cover bodies are respectively led in along the hollow pipe section of the supporting plate and positioned in the connecting pipe section of the backrest, a shaft rod penetrates through the two hollow cover bodies and the connecting pipe section of the backrest and is locked at the other end by a nut, the backrest and the supporting plate are pivoted, a torsion spring with proper elasticity is sleeved in the hollow cover bodies sleeved in the two hollow pipe sections of the supporting plate at one side positioned inwards, one leg of the torsion spring abuts against the rear side of the backrest, and the other leg abuts against the rear side of the supporting plate; the invention can make the user get comfortable lying and leaning, and avoid the problem of waist soreness and backache or humpback caused by long-time fixed sitting posture.

Description

Backrest tilting structure supporting the human waist

technical field

The invention relates to a backrest reclining structure for supporting the waist of a human body, mainly for adjusting the backrest adjustment mechanism assembled on one side of the seat to the optimum position by conveniently operating the backrest of the human body against gravity. The best comfortable position, and make the back can form a complete contact with the adjusted backrest, and fix the position of the backrest adjustment mechanism again, so as to effectively simplify the adjustment group of the backrest and improve the comfort in use.

Background technique

In order to allow the user to get the best comfort when sitting in the existing chairs, the relevant industry will consider setting a movable adjustment mechanism when manufacturing this type of chairs, so that the seat of the chairs The cushion unit, the seat back unit, the armrest unit...can be adjusted in proper positions according to the needs of use, so as to improve the motor function of the chair when it is used, and help to improve the comfort of use.

For example, the patent No. 200820180047.0 proposed by a relevant industry and authorized on October 21, 2009 is a utility model patent for the "adjustment structure of the seat back" assembled on one side of the seat. The seat back adjustment unit behind the butterfly seat uses an axis with external teeth to insert between the body and the inner hole of the swing back, and then sets the elastic component on one side of the axis, and then uses a screw component to fix the cover. The body is locked on the body, and a pressing piece is sleeved at the axis near the outside of the body. According to this, when the pressing member is pushed inward, the outer tooth portion of the shaft can be separated from the restriction of the inner tooth portion of the swing back, so that the swing back can be adjusted at any angle in a free state. When the pressing part is released to make it reset, the elastic component sleeved on one side of the shaft will form an outer support shape, so that the outer teeth of the shaft will be restricted by the inner teeth of the swivel back again, so that the swivel back forms a stable positioning status.

Although the above-mentioned seat back adjustment unit can make the seat reach the expected angle adjustment of the seat back when in use, the front and rear orientation adjustment of the seat back can only partially contact the back of the person, and the seat back adjustment unit There are quite a lot of components, which makes the assembly more complicated, resulting in a relative increase in the overall cost of the seat.

Contents of the invention

In view of the above problems, the main purpose of the present invention is to provide a backrest tilting structure that can effectively simplify the structure and improve the comfort of use for supporting the human waist.

In order to achieve the above-mentioned purpose, the backrest reclining structure provided by the present invention for supporting the waist of the human body is a backrest adjustment mechanism arranged on one side of the seat, which includes a group of springs at the end of the butterfly seat at the bottom of the seat for stepless control. unit, the spring stepless control unit guides the restraining member located on the backrest side of the seat to unlock or lock; it is characterized in that: the receiving part formed on the rear side of the spring stepless control unit is connected with a preset The lower end of the support plate with wide width and extended length is fixed, and the distance between the upper sections of the support plate forms two hollow pipe sections, which are parallel to a connecting pipe section arranged at the center of gravity of the back of the backrest. The hollow covers are respectively introduced along the hollow pipe section of the support plate and positioned in the connecting pipe section of the backrest, and a shaft passes through the two hollow covers, the connecting pipe section of the backrest and Lock it with a nut, pivot the backrest and the support plate, and insert the hollow cover of the two hollow pipe sections of the support plate into a torsion with moderate elasticity on the inward side. spring, one of the torsion springs abuts against the rear side of the backrest, and the other foot abuts against the backside of the support plate; when the backrest adjustment mechanism adjusts the position of the backrest, it is Pull the spring stepless control unit up with the hand to release the lock to form a free state, so that the backrest pivoted on the support plate can be adjusted to the preset position by the gravity contact on the back of the human body. When the back of the back is in contact with the orientation, press down the spring stepless control unit with the hand to return to the locked state, and set the backrest pivoted on the support plate to the exact orientation; or pull it up to a free state, so that The backrest is displaced along with the back of the human body.

In the above-mentioned technical solution of the present invention, the front and rear sides of the support plate are abutted against and provided with front and rear side covering boards that conform to the shape, and the front and rear side covering boards can hold the The two hollow pipe sections and the bottom of the support plate are covered in azimuth, and the front and rear side covering plates are fixed on the preset positions of the support plate with several screw fixing components.

The front side covering plate body is formed with through holes corresponding to the connecting pipe section of the backrest and the two hollow pipe sections of the support plate, so as to facilitate the movable adjustment between the support plate and the backrest , the lower end of the rear side covering plate forms a hollow area, so that when it is covered on the lower end of the supporting plate, it can facilitate the screw assembly to move the supporting plate and the spring stepless control unit to the rear The receiving part on one side is locked, or it is convenient to remove the screw assembly in the future, and the bottom of the rear side covering board is extended with two convex parts, so that when an L-shaped board leans against the When the above-mentioned hollow area is used, the two convex parts can cut into holes at corresponding positions on the board body.

By adopting the above-mentioned technical scheme, the present invention can make the back of the human body form a complete contact with the adjusted backrest; or make the backrest in a free state, so that the backrest can be moved along with the back of the human body, so that the user can obtain the effect of lying comfortably. Avoid backaches caused by long-term fixed sitting posture, and the backrest adjustment mechanism of the present invention has the effect of effectively simplifying the structure and reducing the overall cost of the seat.

Description of drawings

Fig. 1 is the external view of the seat combined with the backrest assembly of the present invention;

Fig. 2 is an exploded view of the components of the backrest adjustment mechanism assembled on the seat according to the present invention;

Fig. 3 is a schematic diagram of some components of the backrest adjustment assembled at the bottom of the seat according to the present invention;

Fig. 4 is the side view when the backrest assembled on one side of the seat of the present invention is not in action;

Fig. 5 is the schematic diagram of the forward movement of the backrest assembled on one side of the seat according to the present invention;

Fig. 6 is a schematic diagram of the backward movement of the backrest assembled on one side of the seat according to the present invention.

Detailed ways

The structure and effect of the present invention will be described in detail by citing the following embodiments in conjunction with the accompanying drawings.

As shown in Figures 1 to 6, the backrest tilting structure supporting the waist of the human body provided by the present invention is a backrest adjustment mechanism 8 arranged on one side of the seat 9, which includes a group of butterfly seats 1 located at the bottom of the seat. The end spring stepless control unit 2 (the spring stepless control unit 2 of this embodiment is the prior art), the spring stepless control unit 2 includes a control rod section 21 that can pass through and straddle the end of the butterfly seat 1, and one end Butt against the interlocking spring 23 inside the receiving portion 22 pivotally arranged at the end of the butterfly seat 1 . As shown in Fig. 2 and Fig. 3, when the driving rod 211 on one side of the control rod section 21 is pulled upward, the spring 212 between the control rod sections 21 will only push out due to the Y distance without excessive extrusion (such as state shown in Fig. 2), at this moment, the multi-track metal plate parts 213 positioned at one side of the spring 212 are in a state with a gap, and the interlocking spring 23 on the adjacent side is in a free rotation state, and the interlocking spring 23 is in a state of free rotation. The other leg of the spring 23 abutting against the receiving portion 22 at the end of the butterfly seat 1 is in a corresponding active state. Conversely, when the lever 211 on one side of the control rod section 21 is moved downward, the spring 212 interposed between the control rod sections 21 will be squeezed by the X distance and compressed outwards (clockwise rotation as shown in Figure 3 ), at this time, the multi-channel metal plate parts 213 on one side of the spring 212 are in a forced state, driving the interlocking spring 23 on the adjacent side to form a locked state, and at the same time making the interlocking spring 23 lean against the butterfly seat 1 The other foot of the receiving part 22 at the end is in a corresponding positioning state, and the pinning part on one side of the backrest 3 (here referred to as the part that controls the backrest 3 to move forward and backward) is guided by the spring stepless control unit 2 to unlock or apply locked. The improved parts of the present invention are in:

The receiving part 22 arranged on the rear side of the spring stepless control unit 2 is fixed to the lower end of the support plate 4 with a preset width and extension length, and the distance between the upper sections of the support plate 4 is formed with two hollow pipe sections 41. Two hollow pipe sections 41 are placed in parallel on both sides of a connecting pipe section 31 located at the center of gravity of the backrest 3. Before the support plate 4 straddles the connecting pipe section 31 at the center of gravity of the backrest 3, it conforms to the form. The front and rear side covering plates 5 and 6 are abutted against (as shown in Figure 2), and the front and rear side covering plates 5 and 6 can support the two hollow pipe sections of the plate 4 from the upper and lower ends. 41 and the bottom cover, and use several screw fixing components 42 to fix the front and rear side covering plates 5, 6 on the preset positions of the support plate 4, so that the support plate 4 pivoted with the backrest 3 is in appearance has beautiful settings on it.

The front side covering plate body 5 is formed with through-holes 51 at the connecting pipe section 31 of the corresponding backrest 3 and the two hollow pipe sections 41 of the support plate 4, so as to facilitate the movable adjustment between the support plate 4 and the backrest 3, and in addition A hollow area 61 is formed at the lower end of the rear side covering board body 6, so that when the rear side covering board body 6 is covered on the lower end of the supporting board member 4, the screw fixing assembly 43 can be used to connect the supporting board member 4 and the spring without section. The receiving part 22 on the rear side of the control unit 2 is locked together, or it is convenient to remove the screw assembly 43 in the future. There are also two convex parts 62 extending at intervals from the bottom of the rear side covering board 6, so as to form an L When the plate body 7 is abutted against the hollow area 61, the two convex parts 62 can be cut into the holes 71 at corresponding positions on the plate body 7, so that the rear side covering plate body 6 has an aesthetic effect.

After the two hollow pipe sections 41 located on the upper section of the support plate 4 are placed parallel to the connecting pipe section 31 at the center of gravity of the backrest 3, a hollow cover 44 is introduced along the hollow pipe section 41 of the support plate 4 respectively. And be positioned in the connecting pipe section 31 of backrest 3, then utilize a shaft rod 45 to run through the connecting pipe section 31 of two hollow covers 44, backrest 3 and lock with nut 46 at the other end, make backrest 3 and support plate 4 Pivoted together (as shown in Figure 1). And the hollow cover body 44 that is inserted into the hollow pipe section 41 that two intervals are arranged on the support plate 4 is also equipped with a torsion spring 47 with moderate elasticity on the inward side, and makes one of the torsion springs 47 The foot 471 abuts against the rear side of the backrest 3 , and the other foot 472 abuts against the rear side of the support plate 4 , so that the backrest 3 has moderate elastic abutment (as shown in FIG. 4 ).

When the backrest adjustment mechanism 8 composed of the above structure is used to control the backrest 3 for position adjustment, the spring stepless control unit 2 is pulled upward with the hand to release the lock to form a free state, so as to drive the backrest 3 pivoted with the support plate 4 The gravity contact on the back of the human body can be used to adjust the preset orientation (as shown in Figure 5 and Figure 6), and when the desired back contact position is reached, the stepless control unit 2 can be pressed down by the hand to return to the locked state At the same time, the exact orientation of the backrest 3 pivoted on the support plate 4 is erected, so that the person's back can form a complete abutment with the adjusted backrest 3; Obedient displacement can achieve the effect of lying comfortably, so as to avoid back pain caused by long-term fixed sitting posture, and the backrest adjustment mechanism 8 of the present invention has the effect of effectively simplifying the structure and reducing the overall cost of the seat.

Claims (3)

1. backrest reclining structure that supports the human body waist, for being arranged on the backrest guiding mechanism of seat one side, it comprises the one group of spring section of nothing control module that is located at seat bottom butterfly seat end, and the described spring section of nothing control module guiding is positioned at the parts that pin down of backrest one side of described seat and removes locking or apply locking;

It is characterized in that: the support plate lower end of the carrier that the described spring section of nothing control module rear side forms and a default wide cut and development length sets firmly, the last paragraph spacing of leaning on of described support plate forms two hollow pipeline sections, with be arranged on described backrest rear side center of gravity position one connect that pipeline section is parallel to bridge, two hollow lids are introduced along the hollow pipeline section of described support plate respectively, and be positioned in the connection pipeline section of described backrest, one axostylus axostyle runs through two described hollow lids, the connection pipeline section of described backrest also locks with nut at the other end, described backrest and described support plate are pivoted, in place being inserted in a side inwardly of hollow lid of being inserted in two hollow pipeline sections of described support plate has appropriate flexible torque spring, a described torque spring pin contact wherein is at the rear side of described backrest, and another pin contact is at described support plate rear side;

Described backrest guiding mechanism is when regulating the position of described backrest, be to form free state to pull the described spring section of nothing control module on the hand to remove locking, order about the backrest that is hubbed on the described support plate and can preset the adjusting in orientation by the gravity contact of human body back, when arriving required contact orientation, back, press down the described spring section of nothing control module with hand again and reply and be locking condition, reach definite orientation and set up being hubbed on backrest on the described support plate; Pull perhaps and be free state, make described backrest along with the docile displacement of human body back.

2. support the backrest reclining structure of human body waist according to claim 1, it is characterized in that: the forward and backward side of described support plate covers plate body against being provided with the forward and backward side that form conforms to, described forward and backward side covers plate body and two hollow pipeline sections and the bottom of described support plate can be covered as the orientation at two ends up and down, and consolidates assembly with several spiral shells described forward and backward side is covered the default position that plate body is installed in described support plate.

3. as the backrest reclining structure of support human body waist as described in the claim 2, it is characterized in that: described front side covers plate body and is formed with open-work at the connection pipeline section of the described backrest of correspondence and two hollow pipeline section places of described support plate, regulate in order to the activity between described support plate and the described backrest, described rear side covers the plate body lower end and forms a saturating dummy section, with when being covered in described support plate lower end, can be beneficial to the carrier locking that the solid assembly of spiral shell leans on described support plate and the described spring section of nothing control module back one side, or be convenient to retract the solid assembly of described spiral shell in the future, the bottom spacing extension that described rear side covers plate body is provided with two protuberances, with when a L-shaped plate body is resisted against described dummy section, two described protuberances can be cut the hole of relevant position on the described plate body.

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