CN215650104U

CN215650104U - Waist rest device and seat

Info

Publication number: CN215650104U
Application number: CN202121551806.1U
Authority: CN
Inventors: 王大秋; 周骏
Original assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Current assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2022-01-28
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a lumbar support device and a seat, which comprise a support assembly and a lumbar support body, wherein the support assembly comprises connecting arms respectively connected to two sides of the lumbar support body, the connecting arms extend downwards and have elasticity, and the connecting arms can elastically deform to drive the lumbar support body to elastically deflect; a rotating mechanism is also arranged between the waist rest body and the connecting arm, the rotating mechanism comprises a rotating shaft arranged at the end part of the connecting arm and a rotating seat correspondingly arranged on the waist rest body, and the rotating shaft is in rotating fit in the rotating seat; a torsion spring is arranged between the rotating shaft and the rotating seat, one torsion arm of the torsion spring is abutted against the rotating seat, and the other torsion arm of the torsion spring acts on the rotating shaft; the waist rest body can rotate relative to the connecting arm, and the torsion spring provides elasticity to enable the waist rest body to always have the tendency of resetting after rotating; the support component is arranged at the bottom of the chair back component; therefore, under the action of the elastic force of the connecting arm and the rotating mechanism, the waist rest body can deform correspondingly along with the change of the inclining and sitting postures of the user.

Description

Waist rest device and seat

Technical Field

The utility model relates to the field of seats, in particular to a waist rest device and a seat.

Background

The office chair is closely related to personal life of industrial products, provides effective support for work of people and meets daily work at desk. According to the data given by the TED research institute, we will spend 9.3 hours each day on a chair, and a long-time sitting brings about a reduction in working efficiency and also causes a series of health risks. According to the 1996 data in germany, 85% of lumbago patients are caused by long-term sedentary sitting. Therefore, proper office chair size is a very important factor for long seated users.

In recent years, the ergonomics is gradually paid attention to the design of office chairs, most engineering chairs in the market are provided with waist supports, the waist supports can effectively support the waist of a human body, and the hidden danger of lumbar vertebra caused by wrong sitting postures is avoided. However, most of the lumbar support part of the existing seat is fixed and cannot be flexibly deformed; the sitting posture of the user is constantly changed, so that the waist support of the seat has limited effect of actually supporting the waist of the human body; some waist rest parts are made of mesh materials, have certain elasticity and can generate certain deformation; but the device can not generate corresponding deformation along with the change of the user leaning and leaning on the sitting posture, can not effectively support the waist of the user in real time, and is lack of adaptability; flexibility and comfort are still poor.

Therefore, how to provide a seat lumbar support which can pertinently and effectively relieve the fatigue and the pressure of the waist of a user after sitting for a long time and improve the flexibility, the wrapping property, the comfort, the service life and the height adjustability of the seat lumbar support is one of the strong demands of the market for the optimization of the seat lumbar support, and the technical problems need to be solved urgently.

Disclosure of Invention

The utility model overcomes the defects in the prior art and provides the lumbar support device and the seat which have simple structure and more flexible use, the support component comprises a connecting arm for connecting and supporting the lumbar support body, the connecting arm has elasticity, and then the connecting arm can elastically deform to drive the lumbar support body to elastically deflect, so that the lumbar support body has high flexibility when in use; the lumbar support body can rotate relative to the connecting arm to adapt to the forward tilting or backward tilting of a user; the torsion spring can also act on the waist rest body to enable the waist rest body to automatically reset after rotating; therefore, under the comprehensive action of the connecting arm and the rotating mechanism, the waist rest body can deform correspondingly along with the change of the inclining and sitting postures of the user, and the self-adaptive function of the waist rest body is greatly improved.

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

a waist rest device comprises a supporting assembly and a waist rest body, wherein the supporting assembly comprises connecting arms respectively connected to two sides of the waist rest body, the connecting arms extend downwards and have elasticity, and the connecting arms can elastically deform to drive the waist rest body to elastically deflect; a rotating mechanism is also arranged between the waist rest body and the connecting arm, the rotating mechanism comprises a rotating shaft arranged at the end part of the connecting arm and a rotating seat correspondingly arranged on the waist rest body, and the rotating shaft is in rotating fit in the rotating seat; a torsion spring is arranged between the rotating shaft and the rotating seat, one torsion arm of the torsion spring is abutted against the rotating seat, and the other torsion arm of the torsion spring acts on the rotating shaft; the waist leans on the body can rotate relative to the linking arm, and the torsional spring will provide elasticity and make the waist lean on the body to have the trend that resets after rotating all the time.

Preferably, a torsional spring mounting seat connected to the rotating shaft is arranged in the rotating seat, and the torsional spring mounting seat and the rotating shaft are circumferentially fixed; the center of the torsion spring mounting seat is provided with a connecting column, and the torsion spring is arranged on the connecting column. Through set up the torsional spring mount pad in the pivot, the torsional spring of easy to assemble just makes the torsional spring act on the pivot simultaneously and rotate the seat.

Preferably, the torsion spring mounting seat is disc-shaped, a butting block is arranged at the position, close to the connecting column, of the torsion spring mounting seat, and a butting groove is correspondingly formed in the rotating seat; one torsion arm of the torsion spring is abutted against the abutting block, and the other torsion arm of the torsion spring is abutted against the abutting groove.

Preferably, the connecting arm is made of elastic engineering materials. The waist support has good elasticity and low cost.

Preferably, the connecting arm is provided with a bending section which is easy to bend, and the bending section is provided with a plurality of grooves which are arranged at intervals. The rigidity of the connecting arm can be reduced, and the bending degree of the connecting arm is improved.

Preferably, a limiting mechanism is further arranged between the rotating shaft and the rotating seat, and the limiting mechanism limits that the waist rest body can only rotate upwards relative to the connecting arm. When making the user support the body by leaning on backward on the waist, can act on the relative linking arm of waist and lean on the body and continue backward rotation, the state when adaptation user heels back.

Preferably, the limiting mechanism comprises a limiting block arranged on one of the rotating shaft or the rotating seat and an arc-shaped limiting groove correspondingly arranged on the other of the rotating shaft or the rotating seat.

Preferably, the angle of rotation of the lumbar support body relative to the connecting arm is 15-30 degrees.

Preferably, the maximum angle interval of the upward rotation of the lumbar support body relative to the connecting arm is 25-30 degrees. The user is prevented from excessively tilting backwards, and the sitting posture of the user can be corrected.

Preferably, the waist rest body is in a shape of a Chinese character 'kou', the waist rest body comprises side rods respectively positioned at the left side and the right side, and the side rods are arc-shaped bodies with the middle positions protruding forwards; the rotating seat is arranged on the side rod. Can play the function of supporting the waist.

Preferably, the connecting arms project downwardly and are bent rearwardly. Can ensure that the waist rest body is more closely matched with the connecting arm, and avoid large interval and abrupt feeling

A seat comprising a seat back assembly and said lumbar support; the support assembly is arranged on the chair back assembly, and the connecting arms respectively extend downwards from two sides of the chair back assembly.

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

firstly, the connecting arm which is connected with and supports the lumbar support body has elasticity, so that the connecting arm can be elastically deformed to drive the lumbar support body to elastically deflect, and the lumbar support body has high flexibility when in use; the lumbar support body can rotate relative to the connecting arm to adapt to the forward tilting or backward tilting of a user; the torsion spring can also act on the waist rest body to enable the waist rest body to automatically reset after rotating; therefore, under the comprehensive action of the connecting arm and the rotating mechanism, the waist rest body can be correspondingly flexibly deformed along with the change of the inclining and sitting postures of the user, and the self-adaptive function of the waist rest body is greatly improved.

Secondly, the connecting arm is also provided with a bending section, and the bending section is provided with a plurality of grooves which are arranged at intervals; therefore, the rigidity of the connecting arm can be reduced, the connecting arm is more labor-saving when being elastically bent, the bending degree of the connecting arm is improved, and the moving range of the waist rest body is larger.

Moreover, the torsion spring is arranged in the rotating shaft and the rotating seat, and provides elasticity to enable the waist rest body to always have the tendency of resetting after rotating, so that the waist recovering function is achieved; the torsion spring enables a user to have good damping feeling during use; in addition, still be equipped with stop gear between pivot and the rotation seat, the restriction waist leans on the body only to upwards rotate, avoids the waist to lean on the body home range too big, and when making the user support backward and leaning on the waist leans on the body, can act on the relative linking arm of waist and lean on the body and continue to rotate backward, adapts to the state when the user leans on backward.

Drawings

Figure 1 is a schematic perspective view of a lumbar support in an embodiment of the present invention;

figure 2 is a side view of a lumbar support in an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a connecting arm according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of the connection between the connecting arm and the lumbar support body according to the embodiment of the present invention;

FIG. 5 is a schematic perspective view of an embodiment of the present invention illustrating a rotation shaft and a rotation base;

FIG. 6 is a schematic perspective view of another angle for the rotation shaft and the rotation base to be installed and matched according to an embodiment of the present invention;

fig. 7 is a perspective view of a seat according to an embodiment of the present invention.

The figures are numbered: a support assembly 1; a waist rest body 2; a connecting arm 3; a rotating shaft 4; a rotating seat 5; a torsion spring 6; a torque arm 6 a; a side lever 7; a bending segment 8; a groove 9; a rotating shaft groove 10; a torsion spring mount 11; the insert column 12; a slot 13; a connecting column 14; an abutment block 15; an abutment groove 16; a stop block 17; a limiting groove 18; a decorative cover 19; a chair back component A.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

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

In the description of the present invention, the term "at least one" means one or more than one 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.

In the present embodiment, the terms relating to the respective directions, such as front and rear, are described in the use state where the user is actually seated on the chair.

The specific embodiment of the utility model is as follows:

as shown in fig. 1-6, the present invention provides a lumbar support device, which comprises a support assembly 1 and a lumbar support body 2, wherein the support assembly 1 comprises connecting arms 3 respectively connected to two sides of the lumbar support body 2, the connecting arms 3 extend downward and have elasticity, and the connecting arms 3 can elastically deform to drive the lumbar support body 2 to elastically deflect; therefore, when the user uses the waist rest, the connecting arm 3 can continuously generate elastic deformation so that the waist rest body 2 can be adaptive to the dynamic sitting posture change of the user, and the waist rest body 2 can be used more flexibly; in addition, a rotating mechanism is arranged between the waist rest body 2 and the connecting arm 3, the rotating mechanism comprises a rotating shaft 4 arranged at the end part of the connecting arm 3 and a rotating seat 5 correspondingly arranged on the waist rest body 2, and the rotating shaft 4 is in rotating fit in the rotating seat 5, so that the waist rest body 2 can rotate relative to the connecting arm 3; and still be equipped with the torsional spring 6 between pivot 4 and rotation seat 5, one of them torque arm 6a of torsional spring 6 supports and holds on rotation seat 5, and another torque arm 6a of torsional spring 6 acts on pivot 4, under the elasticity effect of torsional spring 6 for waist leans on body 2 to have the trend that resets after the rotation all the time. Thereby make the waist lean on body 2 can enough carry out elastic deflection under the effect of linking arm 3, and the waist leans on body 2 self also can rotate relative linking arm 3 for the waist leans on body 2 to use nimble comfortable, has improved its self-adaptation function greatly.

As shown in fig. 2-4, the lumbar support body 2 is in a structure of a square shape, the lumbar support body 2 includes side bars 7 at two sides, and the side bars 7 are arc-shaped bodies with middle positions protruding forwards, so that the lumbar support body can be adapted to the waist of a human body and has a function of supporting the waist; the connecting arms 3 are connected to the side rods 7, the connecting arms 3 are made of elastic engineering materials, so that the connecting arms have good elasticity and high structural strength, the connecting arms 3 extend downwards and bend backwards, the waist rest body 2 is matched with the connecting arms 3 more closely, and large intervals and a sharp feeling are avoided; moreover, the connecting arm 3 is provided with a bending section 8 which is specially processed and easy to bend, and the bending section 8 is provided with a plurality of grooves 9 which are distributed at intervals, so that the self rigidity of the connecting arm 3 can be reduced, the elastic bending degree of the connecting arm 3 is higher, the connecting arm 3 is more flexible in deformation, and the connecting arm is not stressed; and then the deformation range of the waist rest body 2 is wider, and the adaptability is higher.

As shown in fig. 2-6, the rotating seat 5 is disposed on the side rod 7, and the specific installation structure of the rotating shaft 4 and the rotating seat 6 is as follows: the rotating seat 6 is provided with a rotating shaft groove 10 which penetrates through the left and right, the rotating shaft 4 is rotatably matched in the rotating shaft groove 10, and the rotating seat 6 is also provided with a torsion spring mounting seat 11 connected to the rotating shaft 4, as shown in fig. 5 and 6, the torsion spring mounting seat 11 is disc-shaped and fixed with the rotating shaft 4 in the circumferential direction, the torsion spring mounting seat 11 is provided with a protruding inserting column 12, the rotating shaft 4 is correspondingly provided with an inserting hole 13, the inserting column 12 is inserted into the inserting hole 13, and the torsion spring mounting seat 11 is fixedly connected with the rotating shaft 4 through a screw (not shown); a connecting column 14 protruding towards the end far away from the rotating shaft 4 is further arranged on the torsion spring mounting seat 11, a butting block 15 is further arranged at the position, close to the connecting column 14, of the torsion spring mounting seat 11, as shown in fig. 4 and 5, the torsion spring 6 is arranged on the connecting column 14, one torsion arm 6a of the torsion spring 6 butts against the butting block 15, a butting groove 16 is correspondingly arranged in the rotating seat 5, and the other torsion arm 6a of the torsion spring 6 correspondingly butts against the butting groove 16; so that the torsion spring 6 can be deformed to provide the elastic force for the waist rest body 2 to reset after rotating in the process that the rotating shaft 4 rotates relative to the rotating seat 5; and the waist rest body 2 has good damping sense when rotating, so that the waist rest is more comfortable. In addition, the inner side of the rotating seat 5 is also connected with a decorative cover 19, and the decorative cover 19 can cover the torsion spring 6, so that the appearance of the waist rest body 2 is simple and beautiful.

Further, the following steps are carried out: a limiting mechanism for limiting the rotation of the lumbar support body 2 is further arranged between the rotating shaft 4 and the rotating seat 5, as shown in fig. 6, the limiting mechanism comprises limiting blocks 17 arranged at the upper end and the lower end of the rotating shaft 4 and an arc-shaped limiting groove 18 correspondingly arranged on the rotating seat 5, and then after the rotating shaft 3 and the rotating seat 5 are completely rotated and matched, the limiting blocks 17 can only move in the limiting groove 18; under the action of the limiting block 17 and the limiting groove 18, the lumbar support body 2 can only rotate upwards (namely rotate clockwise) relative to the connecting arm 3, so that when a user leans against the lumbar support body 1 backwards, the lumbar support body 2 can act on the lumbar support body 2 to continuously rotate backwards relative to the connecting arm 3, and the lumbar support body 2 can adapt to the normal sitting posture state of the user and can also adapt to the backward leaning state of the user; the waist of a user can be fitted better, and better support performance is provided; in the utility model, the maximum upward rotation angle of the lumbar support body 2 relative to the connecting arm 3 is 30 degrees, so that excessive backward tilting of a user is avoided, and the sitting posture of the user can be corrected; the rotating seat 5 is arranged at the 1/4 height of the side rod 7, so that when the waist rest body 2 rotates upwards relative to the connecting arm 3, the upper part of the waist rest body is mainly overturned, and the waist rest can be more fit with the waist of a user. And under the effect of the torsion spring 6, the waist rest body 2 can automatically reset after rotating, and the function of waist recovery is achieved.

As shown in fig. 7, the present invention in turn provides a seat comprising a back assembly a, a support assembly 1 shown disposed at a lower end of the back assembly a, and connecting arms 3 respectively extending downward from both sides of the back assembly a, thereby allowing a lumbar support body 2 to be connected to the back assembly a.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. A lumbar support device characterized by: the waist support comprises a support assembly and a waist support body, wherein the support assembly comprises connecting arms respectively connected to two sides of the waist support body, the connecting arms extend downwards and have elasticity, and the connecting arms can elastically deform to drive the waist support body to elastically deflect; a rotating mechanism is also arranged between the waist rest body and the connecting arm, the rotating mechanism comprises a rotating shaft arranged at the end part of the connecting arm and a rotating seat correspondingly arranged on the waist rest body, and the rotating shaft is in rotating fit in the rotating seat; a torsion spring is arranged between the rotating shaft and the rotating seat, one torsion arm of the torsion spring is abutted against the rotating seat, and the other torsion arm of the torsion spring acts on the rotating shaft; the waist leans on the body can rotate relative to the linking arm, and the torsional spring will provide elasticity and make the waist lean on the body to have the trend that resets after rotating all the time.

2. The lumbar support device of claim 1, wherein: a torsional spring mounting seat connected to the rotating shaft is arranged in the rotating seat, and the torsional spring mounting seat is circumferentially fixed with the rotating shaft; the center of the torsion spring mounting seat is provided with a connecting column, and the torsion spring is arranged on the connecting column.

3. The lumbar support device of claim 2, wherein: the torsional spring mounting seat is disc-shaped, a butting block is arranged at the position, close to the connecting column, of the torsional spring mounting seat, and a butting groove is correspondingly formed in the rotating seat; one torsion arm of the torsion spring is abutted against the abutting block, and the other torsion arm of the torsion spring is abutted against the abutting groove.

4. The lumbar support device of claim 1, wherein: the connecting arm is made of elastic engineering materials.

5. The lumbar support device of claim 1, wherein: the connecting arm is provided with a bending section which is easy to bend, and the bending section is provided with a plurality of grooves which are distributed at intervals.

6. The lumbar support device of claim 1, wherein: and a limiting mechanism is further arranged between the rotating shaft and the rotating seat and limits the waist rest body to rotate upwards only relative to the connecting arm.

7. The lumbar support device of claim 6, wherein: the limiting mechanism comprises a limiting block arranged on one of the rotating shaft or the rotating seat and an arc-shaped limiting groove correspondingly arranged on the other of the rotating shaft or the rotating seat.

8. The lumbar support device of claim 6, wherein: the angle of rotation of the waist rest body relative to the connecting arm is 15-30 degrees.

9. The lumbar support device of claim 8, wherein: the maximum angle interval of the waist rest body rotating upwards relative to the connecting arm is 25-30 degrees.

10. The lumbar support device of claim 1, wherein: the waist rest body is in a shape of a Chinese character 'kou', the waist rest body comprises side rods which are respectively positioned at the left side and the right side, and the side rods are arc-shaped bodies with the middle positions protruding forwards; the rotating seat is arranged on the side rod.

11. The lumbar support device of claim 1, wherein: the connecting arms project downwardly and are bent rearwardly.

12. A seat, characterized by: a lumbar support comprising a chair back assembly and a lumbar support as claimed in any of claims 1-11; the support assembly is arranged on the chair back assembly, and the connecting arms respectively extend downwards from two sides of the chair back assembly.