CN112754209A

CN112754209A - Waist leans on regulation chair

Info

Publication number: CN112754209A
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: 2021-05-07

Abstract

The invention relates to a waist rest adjusting chair which comprises a chair back, a chair seat, chair feet and a tray, wherein the tray comprises a tailstock for installing the chair back, a top seat for connecting the chair seat and a base for connecting the chair feet, the tailstock is hinged with the top seat, the tailstock is hinged with the base, the top seat is movably connected with the base, the chair back is fixedly connected with the tailstock, the waist rest adjusting chair further comprises a waist rest, a supporting piece, a linkage piece and a locking pull rod, the bottom section of the supporting piece is hinged with the tailstock, the top section of the supporting piece is hinged with the waist rest, one end of the linkage piece is connected with the supporting piece in a sliding mode, the other end of the linkage piece is connected with the top seat in a sliding mode, a locking mechanism is arranged between the linkage piece and the top seat, and when the locking mechanism is locked, the linkage piece and the waist rest are locked and cannot move.

Description

Waist leans on regulation 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 not only can bring harm to the spine and the cervical vertebra, but also has great damage to the waist, in the traditional chair, the waist rest is usually fixed on the chair back, the waist rest moves along with the movement of the chair back, when a user finds out to be lazy, the waist can not be supported, and the side turning situation often occurs; also, when the user stands up, the user may be injured at the waist by exerting too hard force or hurrying up too much.

Chinese patent publication No. CN 201295010Y: an adjustable chair comprises a chair back, a chair seat, a headrest, armrests, a waist pillow and a combination body, wherein the chair back and the chair seat are mutually combined and locked by the combination body; in this document, the waist pillow is connected with the chair back, and the waist pillow moves along with the chair back during the adjustment of the chair back, which only provides a certain comfort level for the user and cannot provide protection for the user and the waist of the user.

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 can protect the waist of a user by locking the lumbar support position through the hinge joint of a chair back and a lumbar support.

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

Preferably, a first connecting plate is fixedly connected to the top section of the supporting piece, a second connecting plate is hinged to the first connecting plate, and the other end of the second connecting plate is fixed to the waist rest.

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 manner, and two ends of the first limiting shaft are located in the second sliding groove and are in up-and-down sliding fit with the second sliding groove.

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

Preferably, the end walls of the two sides of the limiting plate are provided with first sliding grooves, the linkage piece is rotatably connected with a second limiting shaft, and the 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, the linkage piece is provided with at least one locking hole, 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 and 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 piece in a plugging 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 a front side of the seat back.

Preferably, a headrest frame for mounting a headrest is arranged on the chair back.

The technical scheme of the invention is different from the traditional mode that the waist support and the chair back are directly connected, the waist support and the chair back are designed in a split mode, and the waist support is a part for independently supporting the waist of a user, so that the protection is provided, and the comfort experience of the user can be improved; in the scheme, the waist support can be freely locked and released, and when the waist support is in a locked state, the waist support cannot move along with the movement of the chair back, so that the waist of a user is independently supported; be different from the support of the traditional backrest only to user's back, when the user stretched lazily the waist, this scheme can lean on the support to user's waist and the back of the chair to user's back two aspects through leaning on the waist to reduce the risk of turning on one's side, when the waist was leaned on and is in the release state, the waist was leaned on and can be moved along with the removal of user's waist, like this when the user stands up to stand, the waist was leaned on can with the user laminating, thereby provides another kind of protection to the user.

Drawings

FIG. 1 is a schematic view of a lumbar support 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 taken at A-A of FIG. 2 according to the present invention;

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

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

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

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

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

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A lumbar support adjusting chair as shown in fig. 1-3, comprising 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 tailstock 14, the base 12 is hinged to the tailstock 14, the top seat 13 is movably connected to the base 12, the tailstock 14 is hinged to the top seat 13, the chair back 1 and the tailstock 14 are fixedly connected, the lumbar support mechanism 2 is located in the chair back 1 and hinged together, and a headrest frame 11 for mounting a headrest is arranged on the chair back 1;

as shown in fig. 1 to 4 and 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 protruding connection portion 31 with a groove, the connection assembly includes a support member 6, a bottom section of the support member 6 is hinged with the chair back 1 through the first hinge shaft 15, a 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 communicated with each other, the connection groove 61 is close to the lumbar support 3, the limit groove 62 is close to the tray, first connection plates 41 are symmetrically fixed on 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, and the first connection plate 41 and the second connection plate 42 are located between the clamping pieces 44, the left side and the right side of the second connecting plate 42 are respectively connected with the first connecting plate 41 in a U shape, and the second connecting plate 42 is fixed in a groove of the upper connecting part 31 of the waist rest 3;

as shown in fig. 5, the limit assembly includes a limit plate 57 and a link 51;

the limiting plate 57 is provided with a mounting groove 58, one end of the mounting groove 58 is open, three fixing blocks protrude from the mounting groove 58, the limiting plate 57 is fixed on the top plate 13 through the fixing blocks, three limiting parts protrude from the mounting groove 58, a limiting cover plate 55 is fixedly connected to the limiting parts, two sides of the limiting plate 57 are provided with first sliding grooves 53 communicated with the mounting groove 58, the first sliding grooves 53 are stepped grooves, the cross section of one end, close to the mounting groove 58, of each first sliding groove 53 is smaller, and two sides of the limiting plate 57 are fixedly connected with first cover plates 56 used for plugging the first sliding grooves 53;

as shown in fig. 6, a locking portion 514 protrudes from one end of the link 51, a hook-shaped reset connecting portion 513 protrudes from the same side of the locking portion 514, a first limit shaft 511 further penetrates through the other reset tension spring side of the link 51, a second limit shaft 512 penetrates through the link 51, the second limit shaft 512 is close to the locking portion 514 and the reset connecting portion 513, the link 51 is V-shaped, and a locking hole 515 is formed in the locking portion 514;

as shown in fig. 1 to 6, the limit plate 57 is slidably connected to the link member 51;

one end of the linkage piece 51, which is provided with a locking part 514, is positioned in the mounting groove 58 and is in sliding connection, the locking part 514 of the linkage piece 51 is positioned between the limiting parts and is blocked by the limiting cover plate 55, a tension spring 54 is connected to the reset connecting part 513, 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 positioned in outer side slots of the first sliding groove 53 and are in sliding fit with each other front and back;

a locking pull rod 52 is fixed at one end of the limit plate 57, the locking pull rod 52 penetrates through the limit plate 57, and the locking pull rod 52 is connected with the locking hole 515 in a plugging and unplugging manner;

a locking shaft and a locking spring are arranged in the locking pull rod 52, after the locking shaft moves, the locking shaft can automatically reset through the locking spring, and the locking shaft is connected with the locking hole 515 in a plugging and unplugging manner;

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 with each other up and down, and second cover plates 64 used for plugging 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 the user is attached to the lumbar support 3, the lumbar support 3 can rotate around the second hinge shaft 43 through the second connecting plate 42 along with 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 locked 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 cannot move along with the movement of the chair back 1;

when the lumbar support 3 is in an open state, the locking pull rod 52 is disengaged 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 disengaged 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 action process of the lumbar support 3 is that 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 supporting member 6 to move, the supporting member 6 rotates around the first hinge shaft 15, the supporting member 6 moves to drive the first limiting shaft 511 to move through the second sliding groove 63, the first limiting shaft 511 drives the link member 51 to move, the link member 51 drives the second limiting shaft 512 to move along the second sliding groove 63, the link 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 disengaged from the locking hole 515, and when a user lifts up forwards, the lumbar support 3 is attached to the user and gradually reset until the locking pull rod 52 abuts against the locking part 514; the reset process of the waist rest 3 is as follows: the tension spring 54 drives the reset connecting portion 513 to reset, the reset connecting portion 513 drives the link member 51 to reset, the link member 51 drives the locking portion 514, the first limiting shaft 511 and the second limiting shaft 512 to reset, the first limiting shaft 511 drives the support member 6 to reset through the second sliding groove 63, the support member 6 drives the first connecting plate 41 to reset, the first connecting plate 41 drives the second connecting plate 42 to reset through the second hinge shaft 43, and the second connecting plate 42 drives the waist rest 3 to reset until the locking portion 514 abuts against the locking pull rod 52;

when the waist rest 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 driving of the reset spring 54, the locking shaft is released, and the locking shaft is inserted into the locking hole 515 under the driving of the locking spring to complete locking.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. The utility model provides a waist leans on regulation chair, includes back of the chair (1), seat support, chair foot and tray, the tray is including tailstock (14) of the installation back of the chair (1), footstock (13) that are used for connecting the seat support 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 be in on tailstock (14), its characterized in that: still include waist by (3), support piece (6), linkage (51) and locking pull rod (52), support piece (6) bottom section with tailstock (14) is articulated, the top section of support piece (6) with waist is by (3) articulated, the one end of linkage (51) with support piece (6) sliding connection, the other end of linkage (51) with footstock (13) sliding connection, linkage (51) with be equipped with locking mechanism between footstock (13), when locking mechanism locks, linkage (51) with waist by (3) is locked and can't be removed.

2. A lumbar support adjustment mechanism as set forth in claim 1, wherein: fixedly connected with first connecting plate (41) on the top section of support piece (6), it has second connecting plate (42) to articulate on first connecting plate (41), the opposite side of second connecting plate (42) is fixed on waist leans on (3).

3. A lumbar support adjustment mechanism as set forth in claim 1, wherein: the supporting piece (6) is provided with a second sliding groove (63), one end of the linkage piece (51) penetrates through a first limiting shaft (511), and two ends of the first limiting shaft (511) are located in the second sliding groove (63) and are in sliding fit with the second sliding groove (63) up and down.

4. A lumbar support adjustment mechanism as set forth in claim 1, wherein: a limiting plate (57) is fixed on the top seat (13), and the linkage piece (51) is connected with the limiting plate (57) in a sliding mode.

5. A lumbar support adjustment mechanism according to claim 4, wherein: be equipped with first groove (53) that slides on the both sides end wall of limiting plate (51), rotate on linkage piece (51) and connect second spacing axle (512), the both sides of second spacing axle (512) are located in first groove (53) that slides and both sliding fit.

6. A lumbar support adjustment mechanism as set forth in claim 1, wherein: the locking mechanism comprises a locking pull rod (52), the linkage piece (51) is provided with at least one locking hole (515), and the locking mechanism is locked when the locking pull rod (52) is inserted into the locking hole (515).

7. A lumbar support adjustment mechanism according to claim 6, wherein: locking pull rod (52) set up on limiting plate (57), locking pull rod (52) are including locking axle and locking spring, the locking spring be used for the restoration of locking axle, the locking axle with locking hole (515) plug connection of linkage (51).

8. A lumbar support adjustment mechanism as set forth in claim 1, wherein: the device is characterized by further comprising a tension spring (54), wherein 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).

9. A lumbar support adjustment chair as claimed in claim 1, wherein: the waist support (3) is positioned at the front side of the chair back (1).

10. A lumbar support adjustment chair as claimed in claim 1, wherein: the chair back (1) is provided with a headrest frame (11) for mounting a headrest.