CN109527856A

CN109527856A - The bindiny mechanism of chair cushion and rear bearing sheet

Info

Publication number: CN109527856A
Application number: CN201811551891.4A
Authority: CN
Inventors: 彭汉强; 吴成
Original assignee: Zhejiang Yueqiang Furniture Technology Co Ltd
Current assignee: Zhejiang Yueqiang Furniture Technology Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2019-03-29

Abstract

The invention belongs to the technical field of chairs, and in particular relates to a connection mechanism of a chair lumbar support and a rear support plate. It solves the technical problems such as the unreasonable design of the prior art. The connection mechanism between the lumbar support and the rear support plate of the chair includes a lumbar support and a vertically arranged rear support plate, a waist-shaped hole is arranged in the middle and upper part of the rear support plate, and a waist-shaped hole is arranged on the back of the rear support plate. A counterbore connected with the shaped holes, the mechanism also includes a position adjustment moving block located in the counterbore, the position adjustment moving block and the lower end of the waist support are connected by a connecting piece passing through the waist-shaped hole, and the position adjustment moving block is The left and right sides of the countersink are respectively provided with elastic locking protrusions, and locking racks which are engaged with the elastic locking protrusions one by one are arranged on the hole wall of the counterbore or the hole bottom of the counterbore. The advantages of the present invention lie in that it can facilitate the adjustment of the position and further expand the scope of application.

Description

The bindiny mechanism of chair cushion and rear bearing sheet

Technical field

The invention belongs to chair technology field more particularly to the bindiny mechanisms of a kind of chair cushion and rear bearing sheet.

Background technique

Chair has swivel chair and fixed chair.

And the structure of chair generally comprises: stabilizer blade and the seat cushion being connected on stabilizer blade, and is connected to seat cushion or stabilizer blade On back rest supports, backrest and Lumbar be installed in back rest supports, existing Lumbar its generally two bolts is used to be fixed on to lean on In back support.

The advantages that fixation of bolt, simple and structure is fixed equal, although having many advantages, such as, this structure There is also following defects for it:

Target user's performance is poor, that is, the position of Lumbar in the vertical direction can not be adjusted.

Summary of the invention

Regarding the issue above, the present invention provides one kind can be applicable in model convenient for adjusting position and further expansion The bindiny mechanism of the chair cushion and rear bearing sheet that enclose.

In order to achieve the above objectives, present invention employs following technical proposals: the connection machine of this chair cushion and rear bearing sheet Structure includes Lumbar and in the rear bearing sheet being vertically arranged, and waist-shaped hole is equipped in the middle and upper part of rear bearing sheet, in the back of rear bearing sheet Face is equipped with the counterbore being connected to the waist-shaped hole, and mechanism further includes that the position in counterbore adjusts movable block, described Position adjusts and is connected between movable block and the lower end of Lumbar by the connector through waist-shaped hole, adjusts a left side for movable block in position Right two sides are respectively equipped with elastic locking protrusion, are equipped with and the elastic locking protrusion in the hole wall of counterbore or the bottom hole of counterbore The locking rack gear engaged one by one.

Counterbore has inside protrusion for two long side middle and upper parts of rectangular opening and rectangular opening, and locking rack gear is along rectangular opening Two long sides distribution.

Position adjusts movable block and can move along waist-shaped hole, not only expands the scope of application, but also also further improve The convenience adjusted cooperates with elastic locking protrusion and locking rack gear, the locking of Lumbar in the vertical direction may be implemented, avoids It is freely lifted displacement.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, the elastic locking protrusion includes being separately connected The Resilient cantilevered portion at movable block respective side edge both ends is adjusted in position, the free end of Resilient cantilevered portion extends in opposite directions and free end is logical It crosses V-shape portion to link together, V-shape portion forces the free end of Resilient cantilevered portion to adjust movable block to position after engaging with locking rack gear Side is close.

It is integral by plastic injection that position adjusts movable block, Resilient cantilevered portion and V-shape portion.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, setting is adjusted in movable block respective side edge in position Two pieces of Resilient cantilevered portions be symmetrical set.

Symmetrical structure its can it is easy to process and manufacture, at the same time it can also ensure position adjust stability and ride comfort.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, the locking rack gear is in symmetrically to set with waist-shaped hole It sets.

Symmetrical structure its can it is easy to process and manufacture.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, the locking rack gear it is L-shaped and be fixed on it is heavy The hole bottom in hole.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, on the opposite medial surface of two locking rack gears respectively Equipped with several interior double wedges, it is respectively provided with arc convex one at the top of each interior double wedge, passes through arc between two adjacent interior double wedges The connection of shape concave surface is equipped with and the matched arc convex two of arc-shaped concave at the top of V-shape portion.

Locking may be implemented in it to the structure, and cancels locking, easy to operate and laborsaving.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, distinguish at the medial surface both ends of every locking rack gear Equipped with limitation protrusion, the raised height of projection of the limitation is higher than the height of projection of interior double wedge.

Limitation protrusion plays the role of limit spacing, avoids excessively opposite disengaging or is detached from downwards.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, on the lateral surface of locking rack gear be equipped with it is described The one-to-one arc convex three of arc-shaped concave.

It can play good outer booster action to the structure, meanwhile, it is also convenient for fabricating, in addition, also further saving Materials are saved.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, there are two the connectors and interval setting.

The tubular T-shaped structure of connector.

Position adjusts movable block and is equipped with the fixation hole one being inserted into for connector, is equipped in the lower end of Lumbar and supplies the company The fixation hole two of fitting insertion, connector are inserted in fixation hole one and through waist-shaped hole, are then inserted in fixation hole two, are connected Part inserts in one end end in fixation hole two and extends to human body side and be equipped with circlip in its end, and connects with connector screw thread It connects and is resisted against the nut on circlip.

In the bindiny mechanism of above-mentioned chair cushion and rear bearing sheet, mechanism further includes for by counterbore orifice closing Closed cover, between the counterbore and closed cover pass through Detachable connection structure connect.

Detachable connection structure includes several intercommunicating pores being arranged on rear bearing sheet and be connected to counterbore, in closed cover One side close to human body is equipped with several connecting columns inserted in the intercommunicating pore one by one, inserts in one end in intercommunicating pore in connecting column Equipped with lock nut, lock nut is contacted with rear bearing sheet close to a surface of human body.

Compared with prior art, the advantages of bindiny mechanism of this chair cushion and rear bearing sheet, is:

1, position adjusts movable block and can move along waist-shaped hole, not only expands the scope of application, but also further mention The high convenience adjusted, cooperates with elastic locking protrusion and locking rack gear, the locking of Lumbar in the vertical direction may be implemented, keep away Exempt to be freely lifted displacement.

2, structure is simple and easy to manufacture.

Detailed description of the invention

Fig. 1 is structural schematic diagram provided by the invention.

Fig. 2 is the structural schematic diagram after removal cover board provided by the invention.

Fig. 3 is enlarged structure schematic diagram at A in Fig. 2.

Fig. 4 is that position provided by the invention adjusts movable block and locking rack gear mated condition schematic diagram.

Fig. 5 is Lumbar structural schematic diagram provided by the invention.

In figure, Lumbar 1, rear bearing sheet 2, waist-shaped hole 21, counterbore 22, position adjust movable block 3, elastic locking protrusion 31, Resilient cantilevered portion 311, V-shape portion 312, arc convex 2 313, connector 4, locking rack gear 5, interior double wedge 51, arc convex 1, Arc-shaped concave 53 limits raised 54, arc convex 3 55, closed cover 6.

Specific embodiment

Below be invention specific embodiment and in conjunction with attached drawing, technical scheme of the present invention will be further described, but Invention is not limited to these embodiments.

As shown in Figs. 1-5,

The bindiny mechanism of this chair cushion and rear bearing sheet includes Lumbar 1 and in the rear bearing sheet 2 being vertically arranged, Lumbar 1 Including the arc block contacted with waist and it is connected to the rectangular block of arc block lower side, the seat cushion bone of rear bearing sheet 2 itself and chair Frame connection.

It is equipped with waist-shaped hole 21 in the middle and upper part of rear bearing sheet 2, is equipped with and the waist-shaped hole 21 at the back side of rear bearing sheet 2 The counterbore 22 of connection, mechanism further include that the position in counterbore 22 adjusts movable block 3, and is used to seal in 22 aperture of counterbore The closed cover 6 closed is connected between the counterbore 22 and closed cover 6 by Detachable connection structure.

It adjusts in position and is connected between movable block 3 and the lower end of Lumbar 1 by the connector 4 through waist-shaped hole 21, connection The tubular T-shaped structure of part 4 is respectively arranged on the left side and the right side elastic locking protrusion 31 in position adjusting movable block 3, in counterbore 22 Hole wall or the bottom hole of counterbore 22 be equipped with the locking rack gear 5 that engages one by one with the elastic locking protrusion 31.

Specifically, the elastic locking protrusion 31 of the present embodiment includes being connected to position to adjust 3 respective side edge of movable block The Resilient cantilevered portion 311 at both ends, the free end of Resilient cantilevered portion 311 extends in opposite directions and free end passes through V-shape portion 312 and is connected to one It rises, V-shape portion 312 forces the free end of Resilient cantilevered portion 311 to adjust 3 side of movable block to position and leans on after engaging with locking rack gear 5 Closely.

Two pieces of Resilient cantilevered portions 311 that position is adjusted in 3 respective side edge of movable block are arranged in be symmetrical set.

The locking rack gear 5 is symmetrical set with waist-shaped hole 21.

The locking rack gear 5 is L-shaped and is fixed on the hole bottom of counterbore 22.

Several interior double wedges 51 are respectively equipped on the opposite medial surface of two locking rack gears 5, the top of each interior double wedge 51 It is respectively provided with arc convex 1, is connected between the interior double wedge 51 of adjacent two by arc-shaped concave 53, on the top of V-shape portion 312 Portion is equipped with and the matched arc convex 2 313 of arc-shaped concave 53.

It is respectively equipped with limitation protrusion 54 at the medial surface both ends of every locking rack gear 5,54 protrusion of limitation protrusion is high Degree is higher than the height of projection of interior double wedge 51.

It is equipped with and the one-to-one arc convex 3 55 of arc-shaped concave 53 on the lateral surface of locking rack gear 5.

There are two the connectors 4 and interval setting.

The adjustment process of the present embodiment is as follows:

Artificially hold 1 top of Lumbar, then up or be downwardly applied to axial force, and elastic locking protrusion 31 at this time by Then upwardly or downwardly pass through locking rack gear 5 when to applied force one by one, is forced under the action of the elastic force of Resilient cantilevered portion 311 V-shape portion 312 has the trend moved out, that is, with 5 kernel of locking rack gear, realizes locking and cancels locking, reach user The Lumbar height needed.

Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims

1. The connection mechanism of the chair lumbar support and the rear support plate, including the lumbar support (1) and the rear support plate (2) arranged vertically, it is characterized in that, the middle and upper part of the rear support plate (2) is provided with a waist shape A hole (21), a counterbore (22) communicating with the waist-shaped hole (21) is provided on the back of the rear support plate (2), and the mechanism also includes a position adjustment moving block located in the counterbore (22) (3), the position adjustment moving block (3) and the lower end of the waist support (1) are connected by a connecting piece (4) passing through the waist-shaped hole (21), and the position adjustment moving block (3) is left and right. Both sides are respectively provided with elastic locking protrusions (31), and the hole wall of the counterbore (22) or the hole bottom of the counterbore (22) are provided with elastic locking protrusions (31) that engage one by one. Lock the rack (5).

2. The connecting mechanism of the chair lumbar support and the rear support plate according to claim 1, wherein the elastic locking protrusion (31) comprises two sides respectively connected to the corresponding side of the position adjustment moving block (3). The elastic cantilever part (311) at the end of the elastic cantilever part (311), the suspended ends of the elastic cantilever part (311) are extended toward each other and the suspended ends are connected together by a V-shaped part (312), and the V-shaped part (312) is engaged with the locking rack (5) to force The suspended end of the elastic cantilever part (311) is close to the side of the position adjustment moving block (3).

3 . The connecting mechanism of the chair lumbar support and the rear support plate according to claim 2 , wherein the two elastic cantilever parts ( 311 ) arranged on the corresponding sides of the position adjustment moving block ( 3 ) are symmetrically arranged. 4 .

4 . The connecting mechanism of the chair lumbar support and the rear support plate according to claim 2 , wherein the locking racks ( 5 ) are symmetrically arranged with waist-shaped holes ( 21 ). 5 .

5 . The connecting mechanism of the chair lumbar support and the rear support plate according to claim 4 , wherein the locking rack ( 5 ) is L-shaped and fixed at the bottom of the counterbore ( 22 ). 6 .

6. The connection mechanism between the lumbar support and the rear support plate of a chair according to claim 5, characterized in that a plurality of inner protruding teeth (51) are respectively provided on the opposite inner surfaces of the two locking racks (5), each The tops of the inner protruding teeth (51) respectively have an arc-shaped convex surface (52), and two adjacent inner convex teeth (51) are connected by an arc-shaped concave surface (53), at the top of the V-shaped portion (312) A second arc-shaped convex surface (313) matching the arc-shaped concave surface (53) is provided.

7. The connecting mechanism of the chair lumbar support and the rear support plate according to claim 6, characterized in that, restricting protrusions (54) are respectively provided on both ends of the inner side of each locking rack (5), so that The height of the restriction protrusion (54) is higher than that of the inner convex teeth (51).

8. The connecting mechanism of the chair lumbar support and the rear support plate according to claim 6, characterized in that, on the outer side of the locking rack (5) is provided with the arc-shaped concave surface (53) one by one Corresponding curved convex surface three (55).

9 . The connecting mechanism between the lumbar support and the rear support plate of a chair according to claim 1 , wherein there are two connecting pieces ( 4 ) which are arranged at intervals. 10 .

10. The connecting mechanism of the chair lumbar support and the rear support plate according to claim 1, characterized in that the mechanism further comprises a closing cover plate (6) for closing the opening of the counterbore (22), the The counterbore (22) and the closing cover plate (6) are connected by a detachable connection structure.