CN219460691U - Waist holds in palm elasticity adjusting device - Google Patents

Abstract

The utility model discloses a waist support elasticity adjusting device which comprises a bracket and a waist support, wherein the waist support is rotationally connected to a rotary supporting seat; the torsion elastic piece comprises a spring body, a supporting torsion arm and an adjusting torsion arm; the control assembly comprises a torsion arm pushing block, an adjusting sliding seat and a rotating handle; the bracket is provided with an adjusting and matching part longitudinally spaced from the rotary supporting seat; the adjusting sliding seat is arranged in the adjusting matching part, the rotating handle horizontally penetrates through the adjusting matching part from the outside of the bracket, and the rotating handle is acted to rotate so as to drive the adjusting sliding seat to move left and right; the torsion arm pushing block vertically props against the adjusting slide seat, and a guide mechanism is arranged between the torsion arm pushing block and the adjusting slide seat, and the guide mechanism is configured to enable the adjusting slide block to move left and right and simultaneously drive the torsion arm pushing block to move back and forth relative to the bracket; the end part of the torsion arm pushing block is abutted with the end part of the adjusting torsion arm, and the torsion arm pushing block can push the adjusting torsion arm to rotate around the center shaft of the spring body so as to adjust the torsion of the torsion elastic piece.

Description

Waist holds in palm elasticity adjusting device

Technical Field

The utility model relates to the field of seats, in particular to a waist support elastic force adjusting device.

Background

Sub-health is always a living problem of people, wherein lumbar vertebra problems caused by sitting for a long time are frequent, and the chair is used as daily furniture for people to work and learn, so that under the long-time sitting office, the spine of a human body is naturally bent, particularly the bending at the lumbar vertebra is more important, the lumbar vertebra is easily bent outwards after sitting for a long time, and lumbar disc herniation and isosceles vertebra diseases are easily caused after the long time sitting. As is well known, the human spine is S-shaped, therefore, a waist rest is additionally arranged at the backrest of part of office chairs to play a role in reaching the waist, so as to support the natural bending part of the lumbar, prevent the natural bending part from outwards bending due to fatigue, and ensure the lumbar health of office staff

In practical application, in order to improve the use comfort, the waist rest has certain elasticity, plays the effect of elastic waist ejection, and avoids supporting hardness. Such elastic lumbar supports typically employ springs or torsion springs to achieve elastic support of the lumbar support; however, such elastic lumbar supports suffer from the following drawbacks: the elastic force of the spring and the torsional spring are preset and cannot be adjusted; the elastic support sizes of the lumbar support perceived by users with different weights are the same; however, when users with different weights are actually used, the users with lighter weights need to relax the waist rest at a bit, and do not need obvious elastic support; while a user with heavy weight needs to lean on the waist to a little, and needs to support with larger elasticity. The current lumbar support device obviously does not have the function of adjusting the elastic force.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and provides the waist support elastic force adjusting device, which is characterized in that a torsion elastic piece and a control component are arranged between a rotary supporting seat and a waist support, and the rotary handle is acted to rotate to control the torsion arm pushing block to move forwards and backwards so as to push an adjusting torsion arm; deforming the torsion elastic piece to adjust the torsion; thereby the elastic force of the waist support elastic support can be adjusted.

The technical scheme of the utility model is realized as follows:

a lumbar support spring force adjustment device comprising: the support and the waist support are provided with a rotary supporting seat; the waist support is rotatably connected to the rotary supporting seat; the torsion elastic piece is arranged between the rotary supporting seat and the waist support and comprises a spring body, a supporting torsion arm and an adjusting torsion arm, wherein the supporting torsion arm is in butt joint with the waist support; the control assembly comprises a torsion arm pushing block, an adjusting sliding seat and a rotating handle; the bracket is provided with an adjusting and matching part longitudinally spaced from the rotary supporting seat; the adjusting sliding seat is arranged in the adjusting matching part, the rotating handle horizontally penetrates through the adjusting matching part from the outside of the bracket, and the end part of the rotating arm is provided with an adjusting screw rod in threaded fit with the adjusting sliding seat; the rotating handle is acted to rotate so as to drive the adjusting slide seat to move left and right; the torsion arm pushing block vertically props against the adjusting slide seat, and a guide mechanism is arranged between the torsion arm pushing block and the adjusting slide seat, and the guide mechanism is configured to enable the adjusting slide block to move left and right and simultaneously drive the torsion arm pushing block to move back and forth relative to the bracket; the end part of the torsion arm pushing block is abutted with the end part of the adjusting torsion arm, and the torsion arm pushing block can push the adjusting torsion arm to rotate around the center shaft of the spring body so as to adjust the torsion of the torsion elastic piece.

Preferably, the torsion elastic piece is of a bilateral symmetry structure, the torsion elastic piece comprises two torsion spring units which are spaced left and right and are connected together, each torsion spring unit comprises a spring body, the supporting torsion arm extends forwards and obliquely from the spring body, and the adjusting torsion arm extends upwards from the rear end of the spring body; and the upper ends of the two adjusting torsion arms are connected together. So that the torsion elastic member can provide enough torsion and is stable in structure.

Preferably, the upper ends of the two adjusting torsion arms are connected together to form a U-shaped structure; an abutting groove is concavely formed in the front end of the torsion arm pushing block; the upper end of the adjusting torsion arm is in abutting fit in the abutting groove. The torsion arm pushing block can stably push and adjust the torsion arm.

Preferably, the torsion arm pushing block is positioned at the bottom end of the adjusting sliding seat; the upper end surface of the torsion arm pushing block is a horizontal plane, and the guide mechanism comprises a guide groove arranged on the upper end surface of the torsion arm pushing block and a guide column which is arranged at the bottom end of the adjusting slide seat and protrudes downwards; and the guide groove is obliquely arranged.

Preferably, the adjusting matching part is concavely provided with a mounting groove; the adjusting sliding seat and the torsion arm pushing block are embedded in the mounting groove; the adjusting slide seat can move left and right in the mounting groove.

Preferably, a connecting cover is also connected to the mounting groove; the lower part of the connecting cover is provided with an avoidance window for avoiding the torsion arm pushing block; and the torsion arm pushing block is in sliding fit with the connecting cover. The connection can play a role in decoration and covering and beautify the appearance.

Preferably, sliding grooves are respectively formed in two sides of the avoidance window, and sliding strips which are in sliding fit in the sliding grooves are correspondingly arranged on two sides of the torsion arm pushing block. The torsion arm pushing block can stably slide along the front-back direction.

Preferably, a caulking groove is formed in the middle position of the rotary supporting seat, and the torsion elastic piece is arranged in the caulking groove; and a transverse shaft penetrating the spring body is arranged in the caulking groove.

Preferably, the rear end of the waist support is provided with a rear connecting piece protruding backwards, and the rear connecting piece comprises two left and right spaced connecting side plates; the rotary supporting seat is clamped between the two connecting side plates; and the connecting side plates are respectively connected with the rotating support seat in a rotating way.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

according to the waist support elastic force adjusting device, the torsion elastic piece is arranged between the waist support and the bracket so as to realize elastic support of the waist support; and further arranging a control component on the bracket; the torsion spring body is provided with a torsion spring body, a torsion spring body and a torsion spring body, wherein the torsion spring body is provided with a torsion spring pushing block, and the torsion spring body is provided with a torsion spring elastic piece; the user can adjust the elastic support size of the waist rest according to the weight of the user, the requirements of users with different weights are met, and the user feel comfortable. And the adjusting operation can be completed by acting on the rotating handle to rotate, and the adjustment is convenient and quick.

Drawings

Fig. 1 is a schematic perspective view of a connection between a lumbar support and a bracket in an embodiment of the present utility model;

fig. 2 is a schematic perspective view of the waist support and the support structure in the embodiment of the utility model;

FIG. 3 is a schematic perspective view of a bracket according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of the control assembly and the torsion spring according to the embodiment of the present utility model;

FIG. 5 is a schematic perspective view of the adjusting carriage and torque arm push block in an embodiment of the present utility model;

figure 6 is a side cross-sectional view of the lumbar support mated with the cradle in an embodiment of the present utility model.

The reference numerals are as follows: a bracket 1; adjusting the matching seat 1a; a waist support 2; a rotary support base 3; a torsion elastic member 4; a spring body 4a; a support torsion arm 4b; adjusting the torsion arm 4c; a control assembly 5; a caulking groove 6; a rear connecting member 7; a connecting side plate 701; a horizontal axis 8; a mounting groove 9; adjusting the slide 10; a torsion arm pushing block 11; turning the handle 12; an adjusting screw 12a; a guide post 13; a guide groove 14; an abutment groove 15; a connection cover 16; a avoidance window 17; a slide bar 18; a chute 19.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiments of the present utility model are as follows:

as shown in fig. 1 to 6, the present utility model firstly provides a waist support elastic force adjusting device, which comprises a bracket 1 and a waist support 2; a rotary supporting seat 3 is arranged at the lower end of the bracket 1; the waist support 2 is rotatably connected to the rotary supporting seat 3; a torsion elastic piece 4 is arranged between the rotation support seat 3 and the waist support 2, and the waist support 2 can elastically rotate under the action of the torsion elastic piece 4; so that the lumbar support 2 can have an elastic supporting effect. And the support 1 is also provided with a control component 5, and the torsion magnitude of the torsion elastic piece 4 can be adjusted through the control component 5, so that the elastic supporting magnitude of the waist support 2 can be correspondingly adjusted.

As shown in fig. 3-6, a caulking groove 6 is provided in the middle of the rotary support base 3, and the torsion elastic member 4 is disposed in the caulking groove 6. A rear connecting piece 7 protruding backwards is arranged at the rear end of the waist support 2, the rear connecting piece 7 comprises two left and right connecting side plates 701 at intervals, and the rotary supporting seat 3 is clamped between the two connecting side plates 701 when connected; the connecting side plates 701 are respectively connected with the rotary supporting seat 3 in a rotary way; so that the lumbar support 2 can rotate around the bracket 1.

As shown in fig. 4-6, the torsion elastic member 4 has a bilateral symmetry structure, the torsion elastic member 4 includes two torsion spring units which are spaced left and right and are connected together, each torsion spring unit includes a spring body 4a, a supporting torsion arm 4b abutted with the waist support 2, and an adjusting torsion arm 4c matched with the control assembly 5; the supporting torsion arms 4b extend forwards and obliquely from each spring body 4a, and the supporting torsion arms 4b are in abutting fit with the rear end face of the waist support 2; the adjusting torsion arms 4c extend upwards from the rear end of each spring body 4a, and the upper ends of the two adjusting torsion arms 4c are connected together to form a U-shaped structure; so that the torsion elastic member 4 can provide a sufficient torsion force and is structurally stable. The transverse shaft 8 horizontally penetrating through the caulking groove 6 is arranged in the rotary connecting seat 3, and the transverse shaft 8 penetrates through the two spring bodies 4a, so that the torsion elastic piece 4 is stable in deformation.

An adjusting and matching part 1a is further arranged above the rotating support seat 3 on the support 1, a mounting groove 9 is concavely formed in the adjusting and matching part 1a, and the control assembly 5 is arranged in the mounting groove 9; specifically: the control assembly 5 comprises an adjusting sliding seat 10 arranged in the mounting groove 9, a torsion arm pushing block 11 matched with the adjusting torsion arm 4c and a rotating handle 12; the rotating handle 12 is horizontally arranged in the mounting groove 9 in a penetrating manner from the outside of the bracket 1, the end part of the rotating handle 12 is in threaded fit with the adjusting slide seat 10, an adjusting screw rod 12a fixed with the rotating handle in the circumferential direction is arranged at the end part of the rotating handle 12, and the adjusting screw rod 12a is arranged in the adjusting slide seat 10 in a penetrating manner and in threaded fit with the adjusting slide seat 10; therefore, the adjusting slide seat 10 can be stably driven to horizontally slide in the mounting groove 9 by the rotation of the adjusting screw rod 12a, and the adjusting slide seat 10 can stably stay at any position after sliding. The torsion arm pushing block 11 is arranged below the adjusting sliding seat 10, a guide mechanism is arranged between the torsion arm pushing block 11 and the adjusting sliding seat 10, as shown in fig. 4 and 5, the upper end surface of the torsion arm pushing block 11 is a horizontal plane, the guide mechanism comprises a guide column 13 protruding downwards from the bottom of the adjusting sliding seat 10 and a guide groove 14 correspondingly arranged on the upper end surface of the torsion arm pushing block 11, and the guide column 13 is embedded in the guide groove 14 downwards; the guide groove 14 is obliquely arranged, so that when the adjusting slide carriage 10 moves horizontally, the guide column 13 can move relative to the guide groove 14, and the guide column 13 can simultaneously push the torque arm pushing block 11 to move back and forth relative to the bracket 1; the front end surface of the torsion arm pushing block 11 is concavely provided with an abutting groove 15, and the upper end of the adjusting torsion arm 4c is in abutting fit in the abutting groove 15. The specific method is as follows: when the torsion arm pushing block 11 moves forward, the adjusting torsion arm 4c can be pushed forward, so that the adjusting torsion arm 4c rotates around the central axis of the spring body 4a, and the torsion force of the adjusting spring body 4a is increased.

As shown in fig. 3 and 4, after the adjusting slide 10 is well matched with the torsion arm pushing block 11, a connecting cover 16 is further connected to the front end of the adjusting matching portion 1a by a screw, and the connecting cover 16 can play a role in decoration and covering and beautify the appearance. The torsion arm pushing block 11 is in sliding fit with the connecting cover 16, and an avoidance window 17 for avoiding the torsion arm pushing block 11 is arranged at the lower part of the connecting cover 16; both ends of the torsion arm pushing block 11 are respectively provided with a sliding groove 18, and both sides of the avoidance window 17 are respectively provided with a sliding strip 19 which is in sliding fit in the sliding groove 18; so that the torsion arm push block 11 can be stably moved in the front-rear direction.

In general, as shown in fig. 6, the torsion of the torsion elastic member 4 can be adjusted by rotating the rotating handle 12, so that the elastic force to be overcome when the lumbar support 2 rotates backwards is different; therefore, the user can adjust the elastic support size of the waist rest 2 according to the weight of the user, the requirements of users with different weights are met, and the user feel comfortable.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (9)

1. The utility model provides a waist holds in palm elasticity adjusting device which characterized in that includes:

the support and the waist support are provided with a rotary supporting seat; the waist support is rotatably connected to the rotary supporting seat;

the torsion elastic piece is arranged between the rotary supporting seat and the waist support and comprises a spring body, a supporting torsion arm and an adjusting torsion arm, wherein the supporting torsion arm is in butt joint with the waist support;

the control assembly comprises a torsion arm pushing block, an adjusting sliding seat and a rotating handle; the bracket is provided with an adjusting and matching part longitudinally spaced from the rotary supporting seat; the adjusting sliding seat is arranged in the adjusting matching part, the rotating handle horizontally penetrates through the adjusting matching part from the outside of the bracket, and the end part of the rotating arm is provided with an adjusting screw rod in threaded fit with the adjusting sliding seat; the rotating handle is acted to rotate so as to drive the adjusting slide seat to move left and right; the torsion arm pushing block vertically props against the adjusting slide seat, and a guide mechanism is arranged between the torsion arm pushing block and the adjusting slide seat, and the guide mechanism is configured to enable the adjusting slide block to move left and right and simultaneously drive the torsion arm pushing block to move back and forth relative to the bracket; the end part of the torsion arm pushing block is abutted with the end part of the adjusting torsion arm, and the torsion arm pushing block can push the adjusting torsion arm to rotate around the center shaft of the spring body so as to adjust the torsion of the torsion elastic piece.

2. The lumbar support spring force adjustment device of claim 1, wherein: the torsion elastic piece is of a bilateral symmetry structure, the torsion elastic piece comprises two torsion spring units which are spaced left and right and are connected together, each torsion spring unit comprises a spring body, the supporting torsion arm extends forwards and obliquely from the spring body, and the adjusting torsion arm extends upwards from the rear end of the spring body; and the upper ends of the two adjusting torsion arms are connected together.

3. The lumbar support spring force adjustment device of claim 2, wherein: the upper ends of the two adjusting torsion arms are connected together to form a U-shaped structure; an abutting groove is concavely formed in the front end of the torsion arm pushing block; the upper end of the adjusting torsion arm is in abutting fit in the abutting groove.

4. The lumbar support spring force adjustment device of claim 1, wherein: the torsion arm pushing block is positioned at the bottom end of the adjusting sliding seat; the upper end surface of the torsion arm pushing block is a horizontal plane, and the guide mechanism comprises a guide groove arranged on the upper end surface of the torsion arm pushing block and a guide column which is arranged at the bottom end of the adjusting slide seat and protrudes downwards; and the guide groove is obliquely arranged.

5. The lumbar support spring force adjustment device of claim 1, wherein: the adjusting matching part is concavely provided with a mounting groove; the adjusting sliding seat and the torsion arm pushing block are embedded in the mounting groove; the adjusting slide seat can move left and right in the mounting groove.

6. The lumbar support spring force adjustment device of claim 5, wherein: a connecting cover is also connected to the mounting groove; the lower part of the connecting cover is provided with an avoidance window for avoiding the torsion arm pushing block; and the torsion arm pushing block is in sliding fit with the connecting cover.

7. The lumbar support spring force adjustment device of claim 6, wherein: and sliding strips are respectively arranged on two sides of the avoidance window, and sliding grooves which are in sliding fit with the sliding strips are correspondingly arranged on two sides of the torsion arm pushing block.

8. The lumbar support spring force adjustment device of claim 1, wherein: the middle position of the rotary supporting seat is provided with a caulking groove, and the torsion elastic piece is arranged in the caulking groove; and a transverse shaft penetrating the spring body is arranged in the caulking groove.

9. The lumbar support spring force adjustment device of claim 8, wherein: the rear end of the waist support is provided with a rear connecting piece protruding backwards, and the rear connecting piece comprises two left and right spaced connecting side plates; the rotary supporting seat is clamped between the two connecting side plates; and the connecting side plates are respectively connected with the rotating support seat in a rotating way.