CN210842303U

CN210842303U - Office chair with adjustable waist rest

Info

Publication number: CN210842303U
Application number: CN201921150190.XU
Authority: CN
Inventors: 吕拥锋
Original assignee: Zhejiang Anji Yongfeng Furniture Co ltd
Current assignee: Zhejiang Anji Yongfeng Furniture Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-06-26
Anticipated expiration: 2029-07-22

Abstract

The utility model relates to an office chair technical field especially relates to an office chair with adjustable waist leans on. The chair comprises a chair seat and a backrest, wherein the backrest comprises a fixed plate and a waist rest, the middle part of the fixed plate is provided with an opening, two surfaces of the fixed plate are respectively provided with an elastic cushion and a supporting piece vertical to the chair seat, the supporting piece is provided with a vertical guide part, one end of the waist rest is arranged on the guide part in a sliding mode through a connecting piece, and the other end of the waist rest penetrates through the opening to abut against the elastic cushion; the guide part is a strip-shaped through hole, and the end part of the connecting piece penetrates through the strip-shaped through hole to form an adjusting part; the solid part of the supporting piece is provided with a sliding chute parallel to the guide part, and a sliding block is arranged in the sliding chute; the adjusting part is provided with a connecting block parallel to the sliding block, and the connecting block is connected with the sliding block through an elastic piece. The utility model discloses a waist is by can be along with the difference of user's mode of taking, and upper and lower, front and back regulation wantonly for the waist is by supporting user's waist all the time, and the practicality is strong. Meanwhile, the adjustable hydraulic cylinder has the characteristics of simple structure, convenience in processing, flexibility and accuracy in adjustment and long service life.

Description

Office chair with adjustable waist rest

Technical Field

The utility model relates to an office chair technical field especially relates to an office chair with adjustable waist leans on.

Background

In modern life, office furniture is more and more in variety and more in variety, and users have higher and higher requirements for the functions of the office furniture, wherein the comfort of office chairs plays a key role in the health of office users.

The office chair is a seat with a backrest and armrests, the backrest on the seat is generally vertical or inclined, when a user leans the back against the backrest, a certain gap exists between the waist of the user's back and the backrest, and the back of the human body cannot completely lean against the backrest, so that the supporting effect of the backrest on the back of the human body is reduced, and the use comfort of the human body is reduced. In order to improve the riding comfort, a convex cushion part, i.e. a lumbar part, is generally arranged at the position of the chair back close to the waist of the seat occupant, and the cushion part supports the waist of the seat occupant to reduce the fatigue of the waist.

However, the position of the lumbar support portion of the seat back of the prior art is generally not adjustable, so that the lumbar support cushion portion does not always fit the waist of the seat occupant correctly when different users sit on the seat, and the prior art has the disadvantages of uncomfortable sitting and poor applicability. There is a pressing need for an office chair with adjustable lumbar support to meet the needs of different users.

Patent document with application number CN201721428505.3 discloses such chair with lift waist is leaned on, and it includes the seat support and the back of the chair, and the back of the chair includes two montants of both sides and locates last horizontal pole and sheer pole between two montants, the back of the chair is equipped with the screen cloth that has certain elasticity towards the preceding terminal surface of seat support, two be equipped with the waist between the montant and lean on, two the montant orientation the spout has all been seted up to the preceding terminal surface of seat support, the waist is leaned on both ends and all is equipped with the inserted block, the movable card of inserted block is gone into extremely the spout just can be followed slide from top to bottom, the waist lean on after adjusting rely on frictional force with the screen cloth compresses tightly realizes relatively fixed, has reached the back of the chair waist and has leaned on adjustably to make the better.

The utility model discloses an in, the waist is by only can reciprocating, and can not the back-and-forth movement, if the seat user when taking the seat, does not sit full seat, back lower part keep away from the waist and lean on, and the waist is by just having lost the effect this moment. Simultaneously, this utility model discloses in, the waist is by relying on compressing tightly of frictional force and screen cloth to realize relatively fixed, on the one hand, after using a period, can appear the problem that frictional force reduces, the screen cloth warp, and the waist of adjusting this moment is by not obtaining fixedly, has just also lost the effect for this seat life is low. On the other hand, only by the fixation of friction force, the waist rest is easy to move under the action of external force, and the accurate positioning can not be realized during the adjustment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the above problems and provide an office chair which can be adjusted freely by the waist along with the difference of the user's sitting mode and has the advantages of accuracy and long service life.

The utility model provides a technical scheme who solves the problem provides an office chair with adjustable waist leans on, including seat support and back, the back includes that the middle part is equipped with open-ended fixed plate and waist leans on, the one side that the fixed plate is close to the seat support is equipped with the cushion, and the frame of cushion is connected with the frame of fixed plate, the one side that the seat support was kept away from to the fixed plate is equipped with the support piece perpendicular to the seat support, the support piece is equipped with vertical guide part, the one end of waist leans on through the connecting piece slip set up in guide part, the other end pass the opening butt in the cushion; the guide part is a strip-shaped through hole, and the end part of the connecting piece penetrates through the strip-shaped through hole to form an adjusting part; the solid part of the supporting piece is provided with a sliding chute parallel to the guide part, a sliding block is arranged in the sliding chute, and two ends of the sliding block parallel to the sliding chute are respectively clamped in a groove formed in the inner side surface of the sliding chute through a convex block; the adjusting part is provided with a connecting block parallel to the sliding block, and the connecting block is connected with the sliding block through an elastic piece.

Preferably, a telescopic piece is further connected between the connecting block and the sliding block.

Preferably, the sliding block is provided with a locking buckle, and the solid part of the supporting piece is provided with a plurality of button holes which can be connected with the locking buckle.

Preferably, the adjusting part is provided with an adjusting seat.

Preferably, the waist rest comprises a connecting plate connected with the connecting piece and a flexible pad arranged on one surface of the connecting plate close to the elastic pad, and the middle of the connecting plate protrudes towards the connecting piece to form an arc-shaped plate.

Preferably, the middle part of the connecting plate is connected with the connecting piece through a rotating shaft.

Preferably, a plurality of far infrared ceramic balls are filled in the flexible cushion.

The utility model has the advantages that:

1. the waist rest penetrates through the opening of the fixing plate and is arranged between the elastic cushion and the supporting piece, so that the waist of a user is supported. And the waist rest is hidden behind the elastic cushion when seen from the front of the office chair, so that the attractiveness of the chair is not affected.

2. The setting of guide part for the waist is leaned on and can be followed the guide part and reciprocated under the drive of connecting piece, has realized the upper and lower regulation that the waist leaned on, and different users can adjust the position that the waist leaned on according to the needs of oneself and make to sit on the seat support comfortable more.

3. The setting of elastic component makes the waist lean on can the back-and-forth movement, no matter the user sits full seat support and makes whole back lean on completely to lean on, when back is close to back, still the user only sits the first half of seat support, makes last back lean on back, and back is kept away from down when leaning on, the waist leans on the contact that homoenergetic remain throughout with user's waist under elastic component's flexible effect to support the waist, prevent the unsettled damage of waist that the position of sitting harmfully arouses. Wherein, the elastic cushion has elasticity, so that the waist back can be allowed to move back and forth.

4. The locking buckle and the button hole are arranged, and the movement of the connecting block and the waist rest is controlled by controlling the movement of the sliding block, so that the waist rest is prevented from moving due to the interference of external force after being adjusted to a proper position up and down. The problem of traditional rely on the fixed not accurate problem of adjusting the location that leads to of frictional force and the long service life that the frictional force inefficacy leads to is not long is solved.

5. The waist rest is connected with the connecting piece through the rotating shaft, so that when a user takes the seat and needs to rotate leftwards and rightwards to conveniently do things, the waist rest can be always attached to the waist of the user.

6. The waist is by setting up to the arc of laminating waist, and it is more comfortable to use. And far infrared ceramic balls are filled in the far infrared ceramic balls, so that the far infrared ceramic balls have the effects of massage and health care.

Drawings

FIG. 1 is a schematic view of an office chair with adjustable lumbar support;

FIG. 2 is a top view of a lumbar support and support in an office chair with adjustable lumbar support;

FIG. 3 is a schematic view of the connection of the connecting member to the support member in an office chair with adjustable lumbar support;

in the figure: 1-seat, 2-backrest, 21-fixing plate, 22-elastic cushion, 23-supporting piece, 231-guiding part, 232-sliding groove, 233-sliding block, 234-locking buckle, 235-button hole, 24-waist rest, 241-connecting piece, 242-connecting piece, 243-elastic piece, 244-telescopic piece, 245-adjusting seat, 246-connecting plate and 247-flexible cushion.

Detailed Description

The following are embodiments of the present invention and the accompanying drawings are used to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

The utility model provides an office chair with adjustable waist leans on, as shown in fig. 1, including seat support 1 and back 2, back 2 includes that the middle part is equipped with open-ended fixed plate 21 and waist leans on 24, the one side that fixed plate 21 is close to seat support 1 is equipped with elastic cushion 22, and elastic cushion 22's frame is connected with fixed plate 21's frame, the one side that seat support 1 was kept away from to fixed plate 21 is equipped with perpendicular to seat support 1's support piece 23, support piece 23 is equipped with vertical guide part 231, the one end of waist leans on 24 passes through connecting piece 241 and slides and set up in guide part 231, the other end passes the opening butt in elastic cushion.

When in use, the connecting piece 241 is controlled to move up and down along the guiding part 231 according to the direction in fig. 1, so as to drive the lumbar support 24 to adjust up and down.

In order to facilitate the control of the movement of the connecting member 241, the guide portion 231 is a bar-shaped through hole through which the end portion of the connecting member 241 passes and forms an adjusting portion; the control is carried out by the adjusting part. Alternatively, the adjustment unit may be provided with an adjustment base 245, and the lumbar support 24 may be moved up and down by controlling the adjustment base 245.

In addition, in the present application, in order to enable the lumbar support 24 to move back and forth, as shown in fig. 2 and fig. 3, the solid portion of the support member 23 is provided with a sliding slot 232 parallel to the guide portion 231, a sliding block 233 is arranged in the sliding slot 232, and two ends of the sliding block 233 parallel to the sliding slot 232 are respectively clamped in grooves formed on the inner side surface of the sliding slot 232 through protruding blocks; the adjusting portion is provided with a connecting piece 242 parallel to the slider 233, and the connecting piece 242 is connected to the slider 233 by an elastic member 243.

When the user sits down, the back is first brought into contact with the lumbar support 24. When the user leans back, i.e. the back of the user moves to the right according to the direction of fig. 2, the user pushes the lumbar support 24 to move the connecting member 241 and the connecting block 242 to the right, since the supporting member 23 is fixed and the sliding block 233 is limited in the sliding slot 232 and can only move along the sliding slot 232, the elastic member 243 expands. When the user leans forward, i.e. the back of the user moves to the left according to the direction shown in fig. 2, the elastic member 243 returns to move the connecting block 242 and the lumbar support to the left, so as to maintain the contact support with the waist of the user.

Meanwhile, in order to prevent the elastic member 243 from being extended or contracted in other directions, an extension member 244 is connected between the connection block 242 and the slider 233.

In addition, after the waist support 24 is adjusted up and down, the adjusted position needs to be locked, so that the sliding block 233 is provided with a locking buckle 234, and the solid part of the support 23 is provided with a plurality of button holes 235 which can be connected with the locking buckle 234.

Further, the lumbar support 24 comprises a connecting plate 246 connected with the connecting piece 241 and a flexible pad 247 disposed on one side of the connecting plate 246 close to the elastic pad 22, wherein the middle part of the connecting plate 246 protrudes towards the connecting piece 241 to form an arc-shaped plate to fit the waist of the human body. And a plurality of far infrared ceramic balls can be filled in the flexible pad 247 to achieve the effect of massage and health care.

The middle of the connecting plate 246 can be connected with the connecting piece 241 through a rotating shaft, in this application, one part of the rotating shaft is arranged in the groove at the end of the connecting piece 241 through a ball, and the other part of the rotating shaft is connected with the connecting plate 246, so that the lumbar support 24 can rotate left and right within a certain range.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an office chair with adjustable waist leans on, includes seat support (1) and back (2), its characterized in that: the backrest (2) comprises a fixing plate (21) and a waist rest (24), wherein an opening is formed in the middle of the fixing plate (21), an elastic cushion (22) is arranged on one surface, close to the seat (1), of the fixing plate (21), a frame of the elastic cushion (22) is connected with the frame of the fixing plate (21), a supporting piece (23) perpendicular to the seat (1) is arranged on one surface, far away from the seat (1), of the fixing plate (21), the supporting piece (23) is provided with a vertical guide part (231), one end of the waist rest (24) is arranged on the guide part (231) in a sliding mode through a connecting piece (241), and the other end of the waist rest (24) penetrates through the opening and abuts against the; the guide part (231) is a strip-shaped through hole, and the end part of the connecting piece (241) penetrates through the strip-shaped through hole to form an adjusting part; the solid part of the support member (23) is provided with a sliding groove (232) parallel to the guide part (231), a sliding block (233) is arranged in the sliding groove (232), and two ends of the sliding block (233) parallel to the sliding groove (232) are respectively clamped in grooves formed in the inner side surface of the sliding groove (232) through convex blocks; the adjusting part is provided with a connecting block (242) parallel to the sliding block (233), and the connecting block (242) is connected with the sliding block (233) through an elastic piece (243).

2. An office chair with adjustable lumbar support as claimed in claim 1, wherein: and a telescopic piece (244) is also connected between the connecting block (242) and the sliding block (233).

3. An office chair with adjustable lumbar support as claimed in claim 1, wherein: the sliding block (233) is provided with a locking buckle (234), and the solid part of the support (23) is provided with a plurality of button holes (235) which can be connected with the locking buckle (234).

4. An office chair with adjustable lumbar support as claimed in claim 1, wherein: the adjusting part is provided with an adjusting seat (245).

5. An office chair with adjustable lumbar support as claimed in claim 1, wherein: the waist support (24) comprises a connecting plate (246) connected with the connecting piece (241) and a flexible pad (247) arranged on one side, close to the elastic pad (22), of the connecting plate (246), and the middle of the connecting plate (246) protrudes towards the direction of the connecting piece (241) to form an arc-shaped plate.

6. An office chair with adjustable lumbar support as claimed in claim 5, wherein: the middle part of the connecting plate (246) is connected with the connecting piece (241) through a rotating shaft.

7. An office chair with adjustable lumbar support as claimed in claim 5, wherein: and a plurality of far infrared ceramic balls are filled in the flexible pad (247).