CN214760160U - Waist leans on regulation chair - Google Patents

Abstract

The utility model 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 tailstock for installing the chair back, a top seat for connecting the chair seat and a base seat for connecting the chair legs, 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, and also comprises a waist rest, a supporting piece, a linkage piece and a locking pull rod, the bottom section of the support is hinged with the tailstock, the top section of the support is hinged with the waist rest, one end of the linkage piece is connected with the supporting piece in a sliding way, the other end of the linkage piece is connected with the top seat in a sliding way, a locking mechanism is arranged between the linkage piece and the top seat, when the locking mechanism is locked, the linkage piece and the waist rest are locked and cannot move, and a tension spring is connected between the linkage piece and the top seat; when the waist support is in a locked state, and a user rises, the tension spring can drive the waist support to be released, so that the waist support always supports the waist of the user along with the waist support and gradually resets.

Description

Waist leans on regulation chair

Technical Field

The utility model relates to the field of furniture, especially, relate to a waist leans on regulation 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.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a through the waist lean on with the back of the chair articulated mode realize real-time protection user's waist through the extension spring, and compact structure's waist leans on adjustment mechanism and chair.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a waist rest adjusting chair comprises a chair back, a chair seat, chair legs and a tray, wherein the tray comprises a tail seat for mounting the chair back, a top seat for connecting the chair seat and a base seat for connecting the chair legs, 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, and also comprises a waist rest, a supporting piece, a linkage piece and a locking pull rod, the bottom section of the support is hinged with the tailstock, the top section of the support is hinged with the waist rest, one end of the linkage piece is connected with the supporting piece in a sliding way, the other end of the linkage piece is connected with the top seat in a sliding way, a locking mechanism is arranged between the linkage piece and the top seat, when the locking mechanism is locked, the linkage piece and the waist rest are locked and cannot move, and a tension spring is connected between the linkage piece and the top seat.

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 side 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 in sliding connection with the limiting plate.

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 following components: 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 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 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 utility model is different from the traditional waist support and the chair back direct connection, the waist support and the chair back are designed separately, the waist support becomes a part for independently supporting the waist of the user, which not only provides a protection but also can increase the comfort experience of the user; 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 an overall schematic view of a waist rest adjusting chair of the utility model;

fig. 2 is a front view of fig. 1 in the present invention;

fig. 3 is a schematic view of the present invention at a-a in fig. 2;

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

fig. 5 is a schematic view of the middle limiting component of the present invention;

fig. 6 is a schematic view of a linkage of the present invention;

fig. 7 is a schematic view of the fixing assembly of 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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present 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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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 is fixedly connected to the tailstock 14, 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, 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 communicated with each other, the connection groove 61 is close to the lumbar support 3, the limit groove 62 is close to the tray, the left and right sides of the connection groove 61 are symmetrically fixed with first connection plates 41, the first connection plates 41 are fixed with second connection plates 42 through second hinge shafts 43, the two ends of the second hinge shafts 43 are fixed with clamping pieces 44, and the first connection plates 41 and the second connection plates 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 arranged on first sliding grooves 53 communicated with the mounting groove 58, the first sliding grooves 53 are stepped grooves, the cross section of one side, 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 side of the link member 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 member 51, a second limit shaft 512 penetrates through the link member 51, the second limit shaft 512 is close to the locking portion 514 and the reset connecting portion 513, the link member 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 side of the linkage piece 51 with the 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, the reset connecting part 513 is connected with a tension spring 54, the other side 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 back and forth;

a locking pull rod 52 is fixed on one side 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 is abutted 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, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

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 lean on (3), support piece (6), linkage piece (51) and locking pull rod (52) including the waist, support piece (6) bottom section with tailstock (14) is articulated, the top section of support piece (6) with the waist is leaned on (3) articulated, the one end of linkage piece (51) with support piece (6) sliding connection, the other end of linkage piece (51) with footstock (13) sliding connection, linkage piece (51) with be equipped with locking mechanism between footstock (13), when locking mechanism locks, linkage piece (51) with the waist is leaned on (3) and is locked unable removal, linkage piece (51) with be connected with extension spring (54) between footstock (13).

2. A lumbar support adjustment chair as claimed 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 chair as claimed 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 chair as claimed in claim 1, wherein: a limiting plate (57) is fixed on the top seat (13), and the linkage piece (51) is in sliding connection with the limiting plate (57).

5. A lumbar support adjustment chair as claimed in claim 4, wherein: be equipped with first groove (53) that slides on the both sides end wall of limiting plate (57), 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 chair as claimed in claim 4, 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).

7. A lumbar support adjustment chair as claimed in claim 4, 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).

8. A lumbar support adjustment chair as claimed in claim 7, 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).

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.

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