CN218279107U

CN218279107U - Chair with easily-adjusted waist rest position

Info

Publication number: CN218279107U
Application number: CN202222529161.2U
Authority: CN
Inventors: 雷海鸣
Original assignee: Anji County Yuhang Furniture Co ltd
Current assignee: Anji County Yuhang Furniture Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-13
Anticipated expiration: 2032-09-23

Abstract

The utility model aims to provide a chair with an easily adjustable waist rest position, which comprises a chair back, a chair seat, a waist rest and a waist rest adjusting device, wherein the waist rest adjusting device comprises a front and a back adjusting piece arranged on the chair back and a height adjusting piece respectively connected with the front and the back adjusting pieces and the waist rest; the height adjusting piece moves in the height direction relative to the front and rear adjusting pieces and is fixed at different height positions; one end of the front-back adjusting piece moves relative to the chair back so as to adjust the relative distance between the waist support and the chair back. Under the action of the front and rear adjusting pieces and the height adjusting pieces, the waist support can adjust the height of the waist support and the extending distance of the chair back relative to the waist support, the adjustment of two dimensions can flexibly meet the requirements of different users, and the application range of the waist support is enlarged.

Description

Chair with easily-adjusted waist rest position

Technical Field

The utility model relates to a chair technical field, concretely relates to chair that position was easily adjusted is leaned on to waist.

Background

Sub-health has been a life problem of concern to people, among which lumbar problems are particularly frequent because of sedentary sitting. As daily furniture for work and study of people, the chair is used for a long time of sitting and working, the spine of a human body is naturally bent, particularly the bending at the lumbar vertebra is more important, the lumbar vertebra is easily bent outwards when the chair is in a sitting posture for a long time, and the isosceles lumbar disc herniation is easily caused as long as the chair is in a long time. As is well known, the spine of a human body is S-shaped, and therefore, a waist rest is additionally arranged at the backrest of part of office chairs so as to support the natural bending part of the lumbar vertebra, prevent the lumbar vertebra from bending outwards due to fatigue and ensure the health of the lumbar vertebra of office staff.

For example, chinese patent publication No. CN106963164A discloses an adaptive adjustment ergonomic lumbar support, which includes an adaptive adjustment mechanism fixed on a seat support and a lumbar support fixed on the adaptive adjustment mechanism. The self-adaptive adjusting mechanism comprises a supporting fixed seat fixedly connected with the seat support and an elastic component fixed on the supporting fixed seat. The elastic member supports the lumbar support, which provides adaptive support to the user's waist, but in practice, the following problems still exist: the waist rest is fixed on the chair, but different users have different requirements on the positions of the waist rest because the body types of people show diversified distribution of height, fat and thinness, the fixed waist rest cannot meet individual differences, and the application range and the health care effect of the waist rest are limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chair that position was easily adjusted is leaned on to waist, guarantees that the position that the waist leaned on can adjust according to user's actual demand is nimble, increases the application scope that the waist leaned on.

The above technical object of the utility model is realized through following technical scheme:

a chair with an easily-adjusted lumbar support position comprises a chair back, a chair seat, a lumbar support and a lumbar support adjusting device, wherein the lumbar support adjusting device comprises a front adjusting part and a rear adjusting part which are arranged on the chair back and a height adjusting part which is respectively connected with the front adjusting part and the rear adjusting part and the lumbar support; the height adjusting piece moves in the height direction relative to the front and rear adjusting pieces and is fixed at different height positions; one end of the front and back adjusting piece moves relative to the chair back so as to adjust the relative distance between the waist support and the chair back.

Therefore, the waist support adjusting device is used for connecting the waist support and the chair back and specifically comprises a front-back adjusting piece and a height adjusting piece. The height adjusting piece is respectively connected with the waist rest and the front and back adjusting piece and moves in the height direction relative to the front and back adjusting piece so as to drive the waist rest to move in the height direction. The waist rest can move in the height direction and be fixed at different height positions, and different requirements of different users on the height position of the waist rest can be met.

The front and back adjusting piece is arranged on the chair back and provides support for the height supporting piece and the waist support. One end of the front and back adjusting piece moves relative to the chair back, so that the height adjusting piece and the waist support can move close to or far away from the chair back in the horizontal direction, and the horizontal distance between the waist support and the chair back is changed. The requirement of different users on the extending distance of the waist rest relative to the chair back is met. The front and rear adjusting pieces can be telescopic rods which can stretch out and draw back in the horizontal direction, the height supporting pieces can stretch out and draw back in the height direction, and the front and rear adjusting pieces and the height supporting pieces can also be threaded rods.

Under the effect of front and back regulating part and height regulating part, the waist is leaned on, can adjust the height of self and the distance that stretches out of relative back of the chair, and the regulation of two dimensions can satisfy different users' demand in a flexible way, has increased the application scope that the waist leaned on.

Preferably, the height adjusting member includes a sliding member that moves in a height direction, and the front-rear adjusting member includes a position limiting frame in which the sliding member moves; the slider is equipped with a plurality of draw-in grooves in proper order in the direction of height, spacing frame be equipped with be used for with the maintenance lug of draw-in groove joint.

Therefore, the height adjusting piece comprises a sliding piece, the front and rear adjusting piece comprises a limiting frame for limiting the sliding piece, and the sliding piece moves up and down in the limiting frame. In order to fix the sliding part at different height positions, the sliding part is sequentially provided with a plurality of clamping grooves in the height direction, and the limiting frame is provided with a fixing convex block clamped with a certain clamping groove. The slider slides to certain suitable high back, with fixed lug joint to the draw-in groove that corresponds in can, altitude mixture control is convenient.

As an optimization of the present invention, the slot is an arc slot, and the retention bump is an arc bump.

From this, draw-in groove and maintenance lug are the arc design, and the immigration draw-in groove that the convenient maintenance lug of arc design is more convenient.

Preferably, the slider includes an anti-slip groove extending in the height direction, through which the frame of the limit frame passes and limiting the frame.

Therefore, when the sliding part moves up and down relative to the limiting frame, the sliding part needs to be prevented from falling off the limiting frame, and the waist rest is further prevented from falling off. The sliding part comprises a separation-preventing groove extending in the height direction, and the frame of the limiting frame penetrates through the separation-preventing groove and then is positioned in the separation-preventing groove. When the sliding part falls, the sliding part can be hung on the frame of the limiting frame, so that the waist rest is prevented from falling off.

As the utility model discloses a preferred, spacing frame contains the guide way, the slider contain with the guide way adaptation, by spacing in the guide way removes the direction lug.

From this, height control spare is by the waist after adjusting to suitable height, and the waist is by needs remain stable, avoids appearing rocking, influences user's use and experiences. The limiting frame comprises a guide groove, and the sliding part comprises a guide convex block matched with the guide groove in size. When the sliding part moves up and down, the guide convex block is limited to move in the guide groove, the guide convex block is matched with the guide groove in size, the gap between the guide convex block and the guide groove is reduced, the sliding part is prevented from swinging left and right relative to the limiting frame, then the waist is prevented from swinging by the generation, and the stability of the waist is guaranteed.

As a preference of the utility model, the front and back adjusting part contains threaded connection's screw rod and screwed pipe, the screw rod, with the back of the chair is connected, the screwed pipe with altitude mixture control spare is connected.

Thus, the forward and rearward adjustment member comprises a threaded rod and a threaded tube in threaded connection. When the chair is installed, the threaded pipe is connected with the height adjusting piece, the screw rod is installed on the chair back, and the screw rod drives the threaded pipe to linearly move back and forth after rotating, so that the waist rest is driven to move in the horizontal direction relative to the chair back. When in use, the waist support can be moved only by rotating the screw rod, and the adjustment is convenient.

As a preferred aspect of the present invention, the seat back includes a threaded hole for the screw to pass through and be connected to.

Therefore, the screw rod is connected with the chair back through the threaded hole, the connection is convenient, and the movement of the screw rod is not influenced.

As a preferred aspect of the present invention, the front and rear adjusting member includes a rotating disk fixedly connected to the screw rod for rotation by the user.

Therefore, the user needs to manually rotate the screw rod when using the screw rod, and the screw rod is usually small in size, so that the user is inconvenient to grasp when rotating and adjusting the screw rod. After a rotating disc with larger volume is installed on the screw rod, a user drives the screw rod to rotate by adjusting the rotating disc, so that the user can conveniently grasp and adjust the screw rod.

Preferably, the slider includes an arc-shaped gripping piece for a user to grip.

As the utility model discloses a preferred, height adjusting part contains installs slider both sides, be used for connecting the connection piece that the waist leaned on, the connection piece contains the arc angle of buckling that is used for preventing self atress to warp.

Therefore, the height adjusting piece is connected with the waist rest through the connecting piece, after a user leans on the waist rest, the waist rest bears the leaning force brought by the user and acts on the connecting piece, and the connecting piece is easy to deform after being stressed for a long time. For preventing that the connection piece from taking place to warp, the connection piece contains the arc angle of buckling, and the arc design makes can play the cushioning effect after the atress to prevent to warp.

To sum up, the utility model discloses following beneficial effect has:

1. the height adjusting piece is respectively connected with the waist rest and the front and back adjusting piece and moves in the height direction relative to the front and back adjusting piece so as to drive the waist rest to move in the height direction. The waist support is moved in the height direction and fixed at different height positions, so that different requirements of different users on the height positions of the waist support can be met.

2. The front and back adjusting piece is arranged on the chair back, one end of the front and back adjusting piece moves relative to the chair back, so that the height adjusting piece and the waist support can move close to or far away from the chair back in the horizontal direction, the horizontal distance between the waist support and the chair back is changed, and the requirement of different users on the extending distance of the waist support relative to the chair back is met.

3. The sliding part is sequentially provided with a plurality of clamping grooves in the height direction, and the limiting frame is provided with a fixing lug which is clamped with a certain clamping groove. The slider slides to certain suitable high back, with fixed lug joint to the draw-in groove that corresponds in can, altitude mixture control is convenient.

4. The limiting frame comprises a guide groove, and the sliding part comprises a guide convex block matched with the guide groove in size. When the sliding part moves up and down, the guide convex block is limited to move in the guide groove, the size of the guide convex block is matched with that of the guide groove, the gap between the guide convex block and the guide groove is reduced, the sliding part is prevented from shaking left and right relative to the limiting frame, the waist support is prevented from shaking, and the stability of the waist support is ensured.

5. The front and back adjusting piece comprises a screw rod and a threaded pipe which are in threaded connection. When the chair is installed, the threaded pipe is connected with the height adjusting piece, the screw rod is installed on the chair back, and the screw rod drives the threaded pipe to linearly move back and forth after rotating, so that the waist rest is driven to move in the horizontal direction relative to the chair back. When in use, the waist rest can be moved only by rotating the screw rod, and the adjustment is convenient.

Drawings

FIG. 1 is a schematic view of the present embodiment;

figure 2 is a schematic view of a lumbar support adjustment device and a lumbar support;

FIG. 3 is a schematic view of a lumbar support adjustment device;

FIG. 4 is a schematic view of a lumbar support adjustment device;

figure 5 is a schematic view of a lumbar support adjustment device.

In the figure:

1. the chair comprises a chair back, 2 a chair seat, 3 a lumbar support, 4a lumbar support adjusting device, 41 a front and back adjusting piece, 411 a limiting frame, 4111 a guide groove, 412 a screw rod, 413 a threaded pipe, 414 a rotating disc, 42 a height adjusting piece, 421 a sliding piece, 4211 a drop-proof groove, 4212 a guide projection, 4213 an arc-shaped grasping piece, 4214 a clamping groove, 422 and a connecting piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment 1, as shown in fig. 1-2, a chair with an easily adjustable lumbar support position includes a chair back 1, a chair seat 2, a lumbar support 3, and a lumbar support adjusting device 4, where the lumbar support adjusting device 4 is used to connect the lumbar support 3 and the chair back 1, and specifically includes a front-back adjusting member 41 and a height adjusting member 42. The height adjusting member 42 connects the lumbar support 3 and the front-rear adjusting member 41, respectively, and moves in the height direction with respect to the front-rear adjusting member 41 to thereby move the lumbar support 3 in the height direction. Waist leans on 3 and removes and fix in the high position of difference in the direction of height, can adapt to different users and lean on 3 high position's different demands to the waist.

Specifically, as shown in fig. 3 and 4, the height adjuster 42 includes a slider 421, the front-rear adjuster 41 includes a stopper frame 411 that limits the slider 421, and the slider 421 moves up and down in the stopper frame 411. As shown in fig. 4, in order to fix the sliding member 421 at different height positions, the sliding member 421 is sequentially provided with a plurality of slots 4214 in the height direction, and the limiting frame 411 is provided with a retention protrusion engaged with one slot 4214. After the sliding part 421 slides to a certain appropriate height, the fixing bump is clamped into the corresponding clamping groove 4214, so that the height adjustment is convenient. The clamping groove 4214 and the retention convex block are both in arc-shaped design, and the arc-shaped design facilitates the retention convex block to move into the clamping groove 4214 more conveniently.

As shown in fig. 3, when the sliding member 421 moves up and down relative to the limit frame 411, it is necessary to prevent the sliding member 421 from falling off the limit frame 411, and further prevent the lumbar support 3 from falling off. The slider 421 includes a slip-off preventing groove 4211 extending in a height direction, and the rim of the position restricting frame 411 passes through the slip-off preventing groove 4211 and is positioned in the slip-off preventing groove 4211. When the sliding member 421 falls, it can be hung on the frame of the limiting frame 411, so as to prevent the waist rest 3 from falling off.

After the height adjusting piece 42 adjusts the lumbar support 3 to a proper height, the lumbar support 3 needs to be kept stable, so that the phenomenon that the user uses the lumbar support to experience is avoided. The position-limiting frame 411 includes a guiding groove 4111, and the sliding member 421 includes a guiding protrusion 4212 adapted to the size of the guiding groove 4111. When the sliding member 421 moves up and down, the guide protrusion 4212 is limited to move in the guide groove 4111, the guide protrusion 4212 is matched with the guide groove 4111 in size, so that a gap between the guide protrusion 4212 and the guide groove 4111 is reduced, the sliding member 421 is prevented from shaking left and right relative to the limiting frame 411, the lumbar support 3 is further prevented from shaking, and the stability of the lumbar support 3 is ensured.

As shown in fig. 1-2, the fore-aft adjustment member 41 is mounted to the seat back 1 to provide support for the height support member 42 and lumbar support 3. One end of the front-rear adjusting member 41 moves relative to the seat back 1 so that the height adjusting member 42 and the lumbar support 3 can move closer to or away from the seat back 1 in the horizontal direction, thereby changing the horizontal distance between the lumbar support 3 and the seat back 1. The requirement of different users on the extending distance of the waist support 3 relative to the chair back 1 is met.

As shown in fig. 5, the front-rear adjusting member 41 includes a screw 412 and a threaded pipe 413 which are threadedly coupled. When the chair is installed, the threaded pipe 413 is connected with the height adjusting piece 42, the screw 412 is installed on the chair back 1, and the screw 412 rotates to drive the threaded pipe 413 to move linearly back and forth, so that the lumbar support 3 is driven to move in the horizontal direction relative to the chair back 1. When in use, the waist rest 3 can be moved only by rotating the screw 412, and the adjustment is convenient. The seat back 1 includes a threaded hole through which the screw 412 is threaded. Therefore, the screw 412 is connected with the chair back 1 through the threaded hole, the connection is convenient, and the movement of the screw 412 is not influenced.

In addition, the user needs to manually rotate the screw 412 when using the device, and the screw 412 is usually small in size, so that the user is inconvenient to grasp when rotating and adjusting the screw. After the rotating disc 414 with a larger volume is installed on the screw 412, a user can adjust the rotating disc 414 to drive the screw 412 to rotate, thereby facilitating the grasping and adjustment.

As shown in fig. 4 to 5, the slider 421 includes an arc-shaped grip 4213 for the user to grasp, so that the user can lift the slider 421 upwards to adjust the height of the lumbar support 3.

The height adjusting member 42 includes a connecting piece 422 installed at both sides of the sliding member 421 for connecting the lumbar support 3, and the connecting piece 422 includes an arc-shaped bending angle for preventing self-forced deformation. Therefore, the height adjusting piece 42 is connected with the waist rest 3 through the connecting piece 422, after the user leans on the waist rest 3, the waist rest 3 bears the leaning force brought by the user and acts on the connecting piece 422, and the connecting piece 422 is easy to deform after being stressed for a long time. For preventing that connection piece 422 from taking place to warp, connection piece 422 contains the arc angle of buckling, and the arc design makes can play the cushioning effect after the atress to prevent to warp.

In summary, under the action of the front and rear adjusting members 41 and the height adjusting member 42, the lumbar support 3 can adjust its height and the extending distance relative to the chair back 1, and the two-dimensional adjustment can flexibly meet the requirements of different users, thereby increasing the application range of the lumbar support 3.

Claims

1. A chair with an easily-adjusted lumbar support position comprises a chair back (1), a chair seat (2) and a lumbar support (3), and is characterized by further comprising a lumbar support adjusting device (4), wherein the lumbar support adjusting device (4) comprises a front and rear adjusting piece (41) arranged on the chair back (1) and a height adjusting piece (42) respectively connected with the front and rear adjusting piece (41) and the lumbar support (3); the height adjusting piece (42) moves in the height direction relative to the front and back adjusting piece (41) and is fixed at different height positions; one end of the front and back adjusting piece (41) moves relative to the chair back (1) so as to adjust the relative distance between the waist support (3) and the chair back (1).

2. A chair with easy adjustment of lumbar support position according to claim 1, characterized in that said height adjusting member (42) comprises a sliding member (421) moving in height direction, said front and rear adjusting member (41) comprises a limit frame (411) for said sliding member (421) to move inside; slider (421) are equipped with a plurality of draw-in grooves (4214) in the direction of height in proper order, spacing frame (411) be equipped with be used for with the maintenance lug of draw-in groove (4214) joint.

3. The chair with the easily adjustable lumbar support position as claimed in claim 2, wherein the slots (4214) are arc-shaped slots, and the retention protrusions are arc-shaped protrusions.

4. A chair with easy lumbar support position adjustment according to claim 2, characterized in that the slider (421) comprises a slip-preventing slot (4211) extending in the height direction for the rim of the limiting frame (411) to pass through and limit.

5. A chair with easy lumbar support position adjustment according to claim 3, characterized in that the limiting frame (411) comprises a guiding groove (4111), and the sliding member (421) comprises a guiding protrusion (4212) adapted to the guiding groove (4111) and limited to move in the guiding groove (4111).

6. A chair with easy adjustable lumbar support position as claimed in claim 1, characterized in that the front and back adjusting member (41) comprises a threaded rod (412) and a threaded pipe (413) which are connected by a screw, the threaded rod (412) is connected with the chair back (1), and the threaded pipe (413) is connected with the height adjusting member (42).

7. A chair with easy adjustment of the lumbar support position according to claim 6, characterized in that the chair back (1) comprises a threaded hole for the screw rod (412) to pass through and be screwed with.

8. A chair with easy lumbar support position adjustment according to claim 6, characterized in that the front and rear adjustment member (41) comprises a rotary disc (414) fixedly connected to the screw (412) for rotation by the user.

9. A chair with easy adjustment of the lumbar support position as claimed in claim 1, wherein said slider (421) comprises an arc-shaped grip tab (4213) for the user to grasp.

10. A chair with easy lumbar support position adjustment according to claim 2, characterized in that the height adjustment member (42) comprises a connecting piece (422) mounted on both sides of the sliding member (421) for connecting the lumbar support (3), the connecting piece (422) comprising an arc-shaped bending angle for preventing self-forced deformation.