CN112754209B

CN112754209B - Waist support adjusting chair

Info

Publication number: CN112754209B
Application number: CN202011636990.XA
Authority: CN
Inventors: 王江林; 王郑兴; 朱青亮; 姜熙安
Original assignee: Henglin Home Furnishings Co Ltd
Current assignee: Henglin Home Furnishings Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2024-09-20
Anticipated expiration: 2040-12-31
Also published as: CN112754209A

Abstract

The invention relates to a waist rest adjusting chair which comprises a chair back, a chair seat, chair legs and a tray, wherein the tray comprises a tail seat, a top seat and a base, the tail seat is used for connecting the chair seat, the base is used for connecting the chair legs, the tail seat is hinged with the top seat, the tail seat is hinged with the base, the top seat is movably connected with the base, the chair back is fixedly connected onto the tail seat, the waist rest adjusting chair further comprises a support piece, a linkage piece and a locking pull rod, the bottom section of the support piece is hinged with the tail seat, the top section of the support piece is hinged with the waist rest, one end of the linkage piece is in sliding connection with the support piece, the other end of the linkage piece is in sliding connection with the top seat, and a locking mechanism is arranged between the linkage piece and the top seat.

Description

Waist support adjusting chair

Technical Field

The invention relates to the field of furniture, in particular to a waist rest adjusting chair.

Background

In the process of daily work and study, long-time sitting and standing can bring harm to the spine and the cervical vertebra, and damage to the waist is also larger, in a traditional seat, a lumbar support is usually fixed on a seat back, the lumbar support moves along with the movement of the seat back, and when a user is lazy to sit on the waist, the lumbar support cannot be supported, and rollover frequently occurs; also, in the process of standing up, the user can exert too hard or get up too hurry, which can cause injury to the waist.

Chinese patent document publication No. CN 201295010Y: an adjustable chair is composed of back, chair seat, headrest, armrests, waist pillow and combined body, which are mutually combined and locked, the headrest is connected to back, the headrest can be up-down regulated relative to back, the waist pillow is connected to back, the waist pillow can be adjusted back and forth relative to the chair back, the armrests are connected with the chair back, and the armrests can swing left and right and turn upwards relative to the chair back to be flush with the chair back, so that a user can adjust the head pillow according to own body and needs when sitting on the chair; in this document it is mentioned that the lumbar pillow is connected to the back of the chair, with which the lumbar support moves during adjustment of the back of the chair, which only provides a certain comfort for the user and does not provide protection for the user and the user's lumbar region.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a chair and a lumbar support adjusting device thereof, which are capable of protecting the lumbar of a user by locking the lumbar support position by hinging the chair back and the lumbar support.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a waist is by regulation chair, includes back of the chair, seat, chair foot and tray, the tray is including the tailstock of installation back of the chair, be used for connecting the footstock of seat and the base that is used for connecting the chair foot, the tailstock is articulated with the footstock, the tailstock is articulated with the base, the footstock with base swing joint, back of the chair fixed connection is in on the tailstock, still include waist rest, support piece, linkage piece and locking pull rod, support piece bottom section with the tailstock is articulated, support piece's top section with waist rest is articulated, the one end of linkage piece with support piece sliding connection, the other end of linkage piece with footstock sliding connection, the linkage piece with be equipped with the locking mechanism between the footstock, when the locking mechanism is locked, the linkage piece with waist rest is locked unable the removal.

Preferably, a first connecting plate is fixedly connected to the top section of the support, a second connecting plate is hinged to the first connecting plate, and the other end of the second connecting plate is fixed to the lumbar support.

Preferably, the support member is provided with a second sliding groove, one end of the linkage member is provided with a first limiting shaft in a penetrating mode, and two ends of the first limiting shaft are located in the second sliding groove and are in sliding fit up and down.

Preferably, a limiting plate is fixed on the top seat, and the linkage piece is in sliding connection with the front linkage piece and the rear linkage piece of the limiting plate.

Preferably, first sliding grooves are formed in end walls of two sides of the limiting plate, the linkage piece is rotationally connected with a second limiting shaft, and two sides of the second limiting shaft are located in the first sliding grooves and are in sliding fit with the first sliding grooves.

Preferably, the locking mechanism comprises a locking pull rod, at least one locking hole is formed in the linkage piece, and the locking mechanism is locked when the locking pull rod is inserted into the locking hole.

Preferably, the locking pull rod is arranged on the limiting plate, the locking pull rod comprises a locking shaft and a locking spring, the locking spring is used for resetting the locking shaft, and the locking shaft is connected with the locking hole of the linkage part in a plug-in mode.

Preferably, the device further comprises a tension spring, one end of the tension spring is connected with the linkage piece, and the other end of the tension spring is fixed on the limiting plate.

Preferably, the lumbar support is located on the front side of the seat back.

Preferably, the chair back is provided with a headrest frame for installing a headrest.

In the technical scheme, the lumbar support is different from the traditional lumbar support and the chair back which are directly connected, the lumbar support is designed to be separated from the chair back, and becomes a part for independently supporting the waist of a user, so that the protection can be provided, and the comfort experience of the user can be improved; in the scheme, the waist rest can realize free locking and release, and when the waist rest is in a locking state, the waist rest does not act along with the movement of the chair back, and the waist of a user is independently supported; the back is different from the support of the back to the back of the user only in the prior art, when the user is in a lazy state, the support of the waist of the user and the support of the back to the back of the user can be realized through the lumbar support, so that the risk of rollover is reduced, when the lumbar support is in a release state, the lumbar support can act along with the movement of the waist of the user, and thus, when the user stands up, the lumbar support can be attached to the user, and further, another protection is provided for the user.

Drawings

FIG. 1 is a schematic view of a lumbar adjustment chair according to the present invention;

FIG. 2 is a front view of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of the portion A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of a lumbar support mechanism according to the present invention;

FIG. 5 is a schematic view of a spacing assembly according to the present invention;

FIG. 6 is a schematic view of a linkage according to the present invention;

FIG. 7 is a schematic view of a fastening assembly according to the present invention.

Description of the drawings: 1. a chair back; 11. a headrest frame; 12. a base; 13. a top base; 14. a tailstock; 15. a first hinge shaft; 2. a lumbar support mechanism; 3. a waist rest; 31. a connection part; 4. a connection assembly; 41. a first connection plate; 42. a second connecting plate; 43. a second hinge shaft; 44. a clamping piece; 5. a limit component; 51. a linkage member; 52. a locking pull rod; 53. a first slip groove; 54. a tension spring; 55. a limit cover plate; 56. a first cover plate; 57. a limiting plate; 58. a mounting groove; 511. a first limiting shaft; 512. the second limiting shaft; 513. a reset connection; 514. a locking part; 515. a locking hole; 6. a support; 61. a connecting groove; 62. a limit groove; 63. a second slip groove; 64. a second cover plate;

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

1-3, A lumbar support adjusting chair comprises a tray, a chair back 1 and a lumbar support mechanism 2, wherein the tray comprises a base 12, a top seat 13 and a tail seat 14, the base 12 is hinged with the tail seat 14, the top seat 13 is movably connected with the base 12, the tail seat 14 is hinged with the top seat 13, the chair back 1 and the tail seat 14 are fixedly connected with the lumbar support mechanism 2, the chair back 1 is positioned in the chair back 1 and hinged together, and a headrest frame 11 for installing a headrest is arranged on the chair back 1;

As shown in fig. 1-4 and fig. 7, the lumbar support mechanism 2 includes a connection assembly 4, a limit assembly 5 and a lumbar support 3, the lumbar support 3 is provided with a connection part 31 with a groove in a protruding manner, the connection assembly includes a support member 6, the bottom section of the support member 6 is hinged with the chair back 1 through the first hinge shaft 15, the top section of the support member 6 is provided with a connection groove 61 and a limit groove 62, the connection groove 61 and the limit groove 62 are mutually communicated, the connection groove 61 is close to the lumbar support 3, the limit groove 62 is close to the tray, a first connection plate 41 is symmetrically fixed on the left and right sides in the connection groove 61, a second connection plate 42 is fixed on the first connection plate 41 through a second hinge shaft 43, two ends of the second hinge shaft 43 are fixed with clamping pieces 44, the first connection plate 41 and the second connection plate 42 are positioned between the clamping pieces 44, the left and right sides of the second connection plate 42 are respectively connected with the first connection plate 41, and the second connection plate 42 is fixed in the groove 31 on the lumbar support 3;

As shown in fig. 5, the limiting assembly includes a limiting plate 57 and a linkage 51;

the limiting plate 57 is provided with a mounting groove 58, one end of the mounting groove 58 is opened, three fixing blocks are arranged in the mounting groove 58 in a protruding mode, the limiting plate 57 is fixed on the top plate 13 through the fixing blocks, three limiting parts are arranged in the mounting groove 58 in a protruding mode, the limiting parts are fixedly connected with limiting cover plates 55, two sides of the limiting plate 57 are arranged on first sliding grooves 53 communicated with the mounting groove 58, the first sliding grooves 53 are step grooves, the section of one end of each first sliding groove 53 close to the mounting groove 58 is smaller, and two sides of the limiting plate 57 are fixedly connected with first cover plates 56 used for blocking the first sliding grooves 53;

As shown in fig. 6, a locking portion 514 protrudes from one end of the linkage member 51, a hook-shaped reset connection portion 513 protrudes from the same side of the locking portion 514, a first limit shaft 511 is further provided on the other reset tension spring side of the linkage member 51 in a penetrating manner, a second limit shaft 512 is provided on the linkage member 51 in a penetrating manner, the second limit shaft 512 is close to the locking portion 514 and the reset connection portion 513, the linkage member 51 is V-shaped, and a locking hole 515 is provided on the locking portion 514;

As shown in fig. 1 to 6, the limiting plate 57 is slidably connected to the link 51;

one end of the linkage member 51 having a locking portion 514 is located in the mounting groove 58 and is slidingly connected, the locking portion 514 of the linkage member 51 is located between the limiting portions and is blocked by the limiting cover plate 55, the reset connecting portion 513 is connected with a tension spring 54, the other end of the tension spring 54 is fixed in the mounting groove 58, two ends of the second limiting shaft 512 extend into the first sliding groove 53, two ends of the second limiting shaft 512 are rotatably connected with rollers, and the rollers are located in slots outside the first sliding groove 53 and are slidingly matched front and back;

a locking pull rod 52 is fixed at one end of the limiting plate 57, the locking pull rod 52 penetrates through the limiting plate 57, and the locking pull rod 52 is connected with the locking hole 515 in a plug-in mode;

The locking pull rod 52 is internally provided with a locking shaft and a locking spring, after the locking shaft moves, the locking shaft can be automatically reset through the locking spring, and the locking shaft is connected with the locking hole 515 in an inserting and pulling way;

the second sliding grooves 63 are respectively formed in the left side and the right side of the limiting groove 62, two ends of the first limiting shaft 511 are located in the second sliding grooves 63 and are in sliding fit up and down, and the second cover plates 64 for blocking the second sliding grooves 63 are arranged on the left side and the right side of the supporting piece 6.

The using method comprises the following steps:

When a user is attached to the lumbar support 3, the lumbar support 3 rotates around the second hinge shaft 43 through the second connection plate 42 according to the change of the body position of the user, so that the use experience of the user is improved.

When the lumbar support 3 is in a locking state, the locking pull rod 52 is inserted into the locking hole 515, and when a user adjusts the chair back 1, the lumbar support 3 does not act along with the action of the chair back 1;

When the lumbar support 3 is in an open state, the locking pull rod 52 is separated from the locking hole 515, and when a user simply adjusts the chair back 1 and does not contact the lumbar support 3, the lumbar support 3 does not act along with the action of the chair back 1;

When the lumbar support 3 is in an open state, the locking pull rod 52 is separated from the locking hole 515, when the user adjusts the chair back 1, the lumbar support 3 does not act along with the action of the chair back 1, and when the user leans backwards, the lumbar support 3 rotates around the first hinge shaft 15 under the pressure of the user; the lumbar support 3 moves, the lumbar support drives the second connecting plate 42 to move, the second connecting plate 42 drives the second hinge shaft 43 to move, the second hinge shaft 43 drives the first connecting plate 41 to move, the first hinge plate 41 drives the support member 6 to move, the support member 6 rotates around the first hinge shaft 15, the support member 6 moves and drives the first limiting shaft 511 to move through the second sliding groove 63, the first limiting shaft 511 drives the linkage member 51 to move, the linkage member 51 drives the second limiting shaft 512 to move along the second sliding groove 63, the linkage member 51 drives the locking part 515 and the reset connecting part 513 to move, and the reset connecting part 513 stretches the tension spring 54;

When the lumbar support 3 is in an open state, the locking pull rod 52 is separated from the locking hole 515, and when a user lifts forward, the lumbar support 3 is attached to the user and gradually reset until the locking pull rod 52 is abutted against the locking part 514; the reset process of the lumbar support 3 is as follows: the tension spring 54 drives the reset connection part 513 to reset, the reset connection part 513 drives the linkage piece 51 to reset, the linkage piece 51 drives the locking part 514, the first limiting shaft 511 and the second limiting shaft 512 to reset, the first limiting shaft 511 drives the supporting piece 6 to reset through the second sliding groove 63, the supporting piece 6 drives the first connection plate 41 to reset, the first connection plate 41 drives the second connection plate 42 to reset through the second hinge shaft 43, and the second connection plate 42 drives the lumbar support 3 to reset until the locking part 514 is in contact with the locking pull rod 52;

when the lumbar support 3 is locked again, the locking shaft of the locking pull rod 52 is pulled, the locking part 514 of the linkage piece 51 is completely reset under the drive of the reset spring 54, the locking shaft is released, and the locking shaft is inserted into the locking hole 515 under the drive of the locking spring, so that the locking is completed.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.

Claims

1. The utility model provides a waist is supported and is adjusted chair, includes back of the chair (1), seat, chair foot and tray, the tray is including tailstock (14) of installation back of the chair (1), footstock (13) that are used for connecting the seat and base (12) that are used for connecting the chair foot, tailstock (14) are articulated with footstock (13), tailstock (14) are articulated with base (12), footstock (13) with base (12) swing joint, back of the chair (1) fixed connection is in on tailstock (14), its characterized in that: the waist rest (3), a supporting piece (6), a linkage piece (51) and a locking pull rod (52), wherein the bottom section of the supporting piece (6) is hinged with the tailstock (14), the top section of the supporting piece (6) is hinged with the waist rest (3), one end of the linkage piece (51) is in sliding connection with the supporting piece (6), the other end of the linkage piece (51) is in sliding connection with the top seat (13), a locking mechanism is arranged between the linkage piece (51) and the top seat (13), and when the locking mechanism is locked, the linkage piece (51) and the waist rest (3) are locked and cannot move;

the support piece (6) is provided with a second sliding groove (63), one end of the linkage piece (51) is provided with a first limiting shaft (511) in a penetrating mode, and two ends of the first limiting shaft (511) are located in the second sliding groove (63) and are in sliding fit up and down;

A limiting plate (57) is fixed on the top seat (13), and the linkage piece (51) is in sliding connection with the front and rear linkage pieces of the limiting plate (57);

The two side end walls of the limiting plate (51) are provided with first sliding grooves (53), the linkage piece (51) is rotationally connected with a second limiting shaft (512), and two sides of the second limiting shaft (512) are located in the first sliding grooves (53) and are in sliding fit with each other.

2. A lumbar adjustment chair according to claim 1, wherein: the top section of the support piece (6) is fixedly connected with a first connecting plate (41), the first connecting plate (41) is hinged with a second connecting plate (42), and the other side of the second connecting plate (42) is fixed on the lumbar support (3).

3. A lumbar adjustment chair according to claim 1, wherein: the locking mechanism comprises a locking pull rod (52), at least one locking hole (515) is formed in the linkage piece (51), and the locking mechanism is locked when the locking pull rod (52) is inserted into the locking hole (515).

4. A lumbar adjustment chair according to claim 1, wherein: the locking pull rod (52) is arranged on the limiting plate (57), the locking pull rod (52) comprises a locking shaft and a locking spring, the locking spring is used for resetting the locking shaft, and the locking shaft is connected with a locking hole (515) of the linkage piece (51) in a plug-in mode.

5. A lumbar adjustment chair according to claim 1, wherein: the device further comprises a tension spring (54), one end of the tension spring (54) is connected with the linkage piece (51), and the other end of the tension spring (54) is fixed on the limiting plate (57).

6. A lumbar adjustment chair according to claim 1, wherein: the waist rest (3) is positioned at the front side of the chair back (1).

7. A lumbar adjustment chair according to claim 1, wherein: a headrest frame (11) for installing a headrest is arranged on the chair back (1).