TWM587476U - Chair capable of adjusting height of waist support and its back part - Google Patents

Abstract

A chair capable of adjusting height of waist support includes a support base, a back part and a seat part connected to the support base and the back part. The support base includes a plurality of rollers. The back part includes a frame having a hollow portion, a waist support portion disposed within the hollow portion, and a cover member covering the frame and the waist support portion. The waist support portion is slidably connected to two inner sides of the frame so as to alter the height of the waist support portion on the back part.

Description

Seat with adjustable backrest height and seat back

This creation is about a chair, especially a chair with adjustable lumbar height.

In order to allow long-time office workers to work comfortably without causing discomfort such as fatigue and back pain, it is important to adjust the ergonomic office chair to an appropriate state.

Although the current common office chairs can already allow people to arbitrarily adjust their seat height, backrest angle and armrest height, etc., because the waist position of the upper body of the human body varies, the waist of the office chair on the market is It is not possible to adjust the waist position of various heights and shapes, and therefore, it cannot precisely abut the waist position expected by the user.

Therefore, how to develop a solution to improve the above-mentioned shortcomings and inconveniences is really an important issue for related industry.

This creation proposes a chair with adjustable backrest height and its chair To solve the problems of the prior art.

According to an embodiment of the present invention, the back of the seat includes a frame, a waistrest, and a covering body. The frame has a hollow portion. The waistrest portion is located in the hollow portion and is slidably connected to the two opposite inner sides of the frame to change the height of the waistrest portion on the frame. The covering body covers the hollow part and the waistrest part of the frame.

According to one or more embodiments of the present invention, in the above seat back, the frame further includes two guide portions. These guides are respectively formed on the two opposite inner sides of the frame. The waistrest includes a bracket, a cushion body and two sliders. The pad body is fixed on the support and is located between the covering body and the support. These sliders are respectively located at two opposite ends of the bracket, and each slider can slidably engage one of the guide portions.

According to one or more embodiments of the present invention, in the above seat back, the frame further includes two first connecting portions. These first connecting portions are located on the two opposite inner sides of the frame. The waistrest portion further includes two second connecting portions and two elastic elements. These second connecting portions are respectively located on the brackets. Each of the second connecting portions detachably abuts one of the first connecting portions. Each elastic element is coupled to the bracket and one of the second connecting portions for moving the second connecting portion to the corresponding first connecting portion.

According to one or more embodiments of the present invention, in the seat back, each of the first connecting portions further includes a recessed portion and a first rack interface. The recessed portion is formed on one of the inner sides of the frame. The first rack interface is located in the recessed portion. Each second connection portion includes a second rack interface. These second rack interfaces are respectively located at two opposite ends of the bracket, and each second rack interface directly engages the first rack interface in the recess.

According to one or more embodiments of the present invention, in the seat back, each of the second connecting portions includes a moving member and a button portion. Sliding status of moving parts On the stand. The second rack interface is located on one side of the moving member and is used to directly engage the second rack interface in the recess. The button part is slidably located on the bracket and pushed against the moving part. The elastic element is coupled to the bracket and the button portion. Therefore, when the button part is moved and the moving part is moved out of the recessed part, the button part compresses the elastic element, and the second rack interface is separated from the first rack interface, so that the waistrest portion can slide relatively on the guide portion of the frame through the slider. shift.

According to one or more embodiments of the present invention, in the seat back described above, each end of the bracket is formed with a first guide groove and a second guide groove that overlap each other. The long axis direction of the first guide groove and the long axis direction of the second guide groove are orthogonal to each other. The waistrest further includes two covers. Each cover body removably covers one of the second guide grooves and is connected to one of the sliders. The second guide groove is located between the first guide groove member and the cover body, the moving member is slidably located in the first guide groove, the button portion is slideably located in the second guide groove, and is located between the moving member and the cover body. between.

According to one or more embodiments of the present invention, in the seat back, the button portion has an inclined groove. The long axis direction of the inclined groove intersects the long axis direction of the first guide groove and the long axis direction of the second guide groove. The moving member has a bump. The bump is slidably confined in the inclined groove. Therefore, when the button part is pressed in a first direction, the button part pushes the bump of the moving part through the inclined groove, so that the moving part moves out of the recessed part in a second direction, wherein the first direction and the second direction are orthogonal to each other .

According to one or more embodiments of the present invention, in the above seat back, an underside of one of the brackets has an opening, and the button portion protrudes downward from the opening.

According to one or more embodiments of the present creation, in the above seat back, the waist rest is detachably located on the frame.

According to another embodiment of this creation, this adjustable waist height The seat includes a support seat, a seat seat, and a seat back described in the above embodiments. The seat is connected with the support seat and the seat back. The support base has a plurality of rollers. The seat back has a frame, a covering body and a waistrest. The frame has a hollow portion. The waistrest portion is located in the hollow portion and is slidably connected to two opposite inner sides of the frame to change the height of the waistrest portion on the frame. The covering body covers the hollow part and the waistrest part of the frame.

In this way, through the above-mentioned structure, the user can adjust the height position of the backrest part by himself, so that the backrest part can precisely and accurately abut the expected waist position of the user, delaying the timing of fatigue and backache discomfort.

The above is only used to explain the problems that this creation intends to solve, the technical means to solve the problems, and the effects they produce, etc. The specific details of this creation will be described in detail in the following embodiments and related drawings.

10‧‧‧ Seat

100‧‧‧ support

110‧‧‧ seat

120‧‧‧ shaft

130‧‧‧roller

200‧‧‧back

210‧‧‧Frame

220‧‧‧ Hollow

221‧‧‧ inside

230‧‧‧Guide

231‧‧‧External attachment

232‧‧‧Locking Department

233‧‧‧Slit

240‧‧‧First connection section

241‧‧‧Depression

242‧‧‧First rack interface

300‧‧‧ Cover

400‧‧‧ Waistrest

410‧‧‧Scaffold

411‧‧‧concave

420‧‧‧Receiving slot

421‧‧‧first guide slot

422‧‧‧Second guide groove

421L, 422L‧‧‧ Long axis direction

430‧‧‧ opening

440‧‧‧ cushion body

450‧‧‧ Slide

451‧‧‧ cover

452‧‧‧ slider

460‧‧‧Second connection section

470‧‧‧ moving parts

471‧‧‧ bump

472‧‧‧Second rack interface

473‧‧‧ Ontology

480‧‧‧ button section

481‧‧‧inclined groove

481L‧‧‧long axis direction

482‧‧‧Positioning post

490‧‧‧elastic element

500‧‧‧ armrest

600‧‧‧ seat

610‧‧‧Comfort pad

M1, M2‧‧‧ area

B‧‧‧ Bolt

D1‧‧‧ first direction

D2‧‧‧ Second direction

D3‧‧‧ Third direction

D4‧‧‧ Fourth direction

H1, H2‧‧‧ height

In order to make the above and other purposes, features, advantages, and embodiments of this creation more comprehensible, the description of the drawings is as follows: FIG. 1 shows the seat of an adjustable waistrest height of an embodiment of this creation. A perspective view; FIG. 2 illustrates a perspective view of the seat back with the cover omitted in FIG. 1; FIG. 3A illustrates a partial enlarged view of the region M1 in FIG. 2; FIG. 3B illustrates an exploded view in FIG. 3A; Figures 4 to 4B are schematic diagrams of continuous operation of the second connection portion of the lumbar support portion, respectively; Figure 5A is a perspective view of the seat with the lumbar support height adjusted in Figure 1; and FIG. 5B is a partial enlarged view of the region M2 in FIG. 5A.

In the following, multiple implementations of this creation will be disclosed graphically. For the sake of clarity, many practical details will be explained in the following description. However, those skilled in the art should understand that in the implementation of this creative part, these practical details are not necessary, so they should not be used to limit the creative work. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner. In addition, for the convenience of the reader, the dimensions of the elements in the drawings are not drawn according to actual proportions.

FIG. 1 is a perspective view of a seat 10 with a adjustable backrest height according to an embodiment of the present invention. FIG. 2 is a perspective view of the seat back 200 of FIG. 1 with the cover 300 omitted. In this embodiment, as shown in FIGS. 1 and 2, the seat 10 includes a support seat 100, a seat back 200, two armrests 500, and a seat 600. The support base 100 includes a base body 110, a shaft 120 and a plurality of rollers 130. These rollers 130 are respectively pivotally connected to the bottom of the base body 110, and the shaft 120 is located at one end of the base body 110 opposite to the roller 130. The seat 600 is disposed on the shaft 120 of the support seat 100, and has a comfort pad 610 for the occupant thereon. The armrests 500 are symmetrically disposed on the seat 600. The seat back 200 has a frame 210, a covering body 300 and a waistrest portion 400. The frame 210 is connected to one side of the seat 600 and is located between the armrests 500. The frame 210 has a hollow portion 220. The waistrest portion 400 is located in the hollow portion 220 and is slidably connected to two opposite sides 221 of the frame 210. The covering body 300 is laid on one surface of the frame 210 so as to cover the hollow portion 220 and the waistrest portion 400. The covering body 300 is, for example, a tensile mesh cloth.

FIG. 3A shows a partially enlarged view of the region M1 in FIG. 2. Figure 3B shows an exploded view of Figure 3A. As shown in FIGS. 3A and 3B, in this embodiment, more specifically, the seat back 200 further includes two guide portions 230. These guides 230 are formed symmetrically on the opposite inner sides 221 of the frame 210 bis. The waistrest portion 400 includes a bracket 410, a cushion body 440 and two sliding members 450. The cushion body 440 is fixed to one surface of the bracket 410, and the cushion body 440 is located between the covering body 300 and the bracket 410 (FIG. 1). These sliding members 450 are respectively located at two opposite ends of the bracket 410, and each sliding member 450 is slidably connected to one of the guiding portions 230. In this way, the waistrest portion 400 can move within the hollow portion 220 of the seat back 200, for example, it can rise or fall along the extending direction of the guide portions 230.

Furthermore, the seat back 200 further includes two first connecting portions 240. These first connecting portions 240 are symmetrically formed on two opposite inner sides 221 of the frame 210. The waistrest portion 400 further includes two second connecting portions 460. These second connecting portions 460 are respectively located at two opposite ends of the bracket 410. Each second connection portion 460 abuts on one of the first connection portions 240 detachably. In this way, after the waistrest portion 400 is moved to a proper position, the waistrest portion 400 can be locked in a proper position through the abutment of the first connection portion 240 and the second connection portion 460 to each other.

Further, each guide portion 230 includes an outer accessory 231, two locking portions 232, and a narrow slot 233. An elongated groove 233 is formed on a long side of the outer attachment 231. The two locking portions 232 are oppositely disposed on the outer accessory 231. Therefore, each outer accessory 231 can be locked to the frame 210 through the locking portions 232, so that the narrow slot 233 is located between the frame 210 and the outer accessory 231. As such, since the outer attachment 231 can be removed from the frame 210, the waistrest portion 400 can be detached from the frame 210, which means that the waistrest portion 400 is removably located on the frame 210.

In addition, a receiving groove 420 is formed at each end of the bracket 410. The receiving groove 420 is used for receiving one of the second connecting portions 460. Each slider 450 includes a cover 451 and a slider 452. The cover 451 can be fixed on the bracket 410 through the bolt B to cover the corresponding receiving groove 420 and the second connection portion 460. The slider 452 is located at one end of the cover 451 facing away from the cushion body 440, and is configured to slidably engage in the narrow groove 233. More specifically, the accommodating groove 420 has a first guide groove 421 and a second guide groove 422 which overlap each other. The major axis direction 421L of the first guide groove 421 and the major axis direction 422L of the second guide groove 422 are orthogonal to each other. The second guide groove 422 is located between the first guide groove 421 and the cover 451.

For example, each of the first connecting portions 240 further includes a recessed portion 241 and a first rack interface 242. Each recessed portion 241 is recessed in one of the inner sides 221 of the frame 210 and faces the hollow portion 220. The first rack interface 242 is located in the recessed portion 241.

Each of the second connecting portions 460 includes a moving member 470 and a button portion 480. The moving member 470 is slidably located on the bracket 410. In this embodiment, the moving member 470 is slidably located in the first guide groove 421. The button portion 480 is slidably located on the bracket 410 and is pushed against the moving member 470. In this embodiment, the button portion 480 is slidably located in the second guide groove 422 and is located between the moving member 470 and the cover 451. The button portion 480 has an inclined groove 481. The major axis direction 481L of the inclined groove 481 intersects the major axis direction 421L of the first guide groove 421 and the major axis direction 422L of the second guide groove 422. The moving member 470 includes a body 473, a protrusion 471, and a second rack interface 472. The bump 471 is located on one surface of the body 473. The protrusion 471 extends into the inclined groove 481 and is slidably limited within the inclined groove 481. One side of the body 473 facing away from the cushion body 440 further has a second rack interface 472. Second rack The surface 472 is used to directly engage the second rack interface 472 in the recessed portion 241.

In addition, the waistrest portion 400 further includes two elastic elements 490. Each elastic element 490 is coupled to the bracket 410 and the button portion 480. For example, one end of each elastic element 490 is sleeved on the positioning post 482 of the button portion 480, and the other end is located in a recessed portion 411 of the bracket 410. The elastic element 490 is used to push the second connection portion 460 back to the corresponding first connection portion 240.

It should be noted that, in this embodiment, the lower side of the bracket 410 has two openings 430 disposed opposite each other. Each button portion 480 is located in the accommodation slot 420 and protrudes downward from one of the openings 430 to smoothly press the hands of the occupant behind the seat back 200 to press the button portion 480 and adjust the waistrest portion 400 posture.

4A to 4B are schematic diagrams of continuous operation of the second connection portion 460 of the waistrest portion 400, respectively. As shown in FIGS. 4A and 4B, when the user presses the button portion 480 toward a first D1 (for example, above), the protrusion 471 of the moving member 470 is pushed through the inclined groove 481, and the button portion 480 moves the moving member 470 along A second direction D2 (such as the right) orthogonal to the first direction D1 is moved out of the recess 241, so that the second rack interface 472 starts to separate the first rack interface 242. At this time, the button portion 480 compresses the elastic element 490 to allow the elastic element 490 to store a restoring elastic force. Therefore, since the waistrest portion 400 is no longer fixed to the frame 210, the waistrest portion 400 can relatively slide on the guide portion 230 of the frame 210 through the slider 452, so that the user can arbitrarily raise and lower the waistrest portion 400 to change the waist The height of the abutment portion 400 on the frame 210.

FIG. 5A is a perspective view of the seat 10 in FIG. FIG. 5B is a partial enlarged view of the region M2 in FIG. 5A. Conversely, as shown in FIGS. 5A and 5B, when the waistrest portion 400 is pushed from the original height H1 (FIG. 1) When it moves to the appropriate height H2 (Figure 5A) and the user no longer presses the button portion 480, the returning elastic force of the elastic element 490 starts to push the button portion 480 in a third direction D3 (below), and passes through the inclined groove 481 Pushing the projection 471 of the moving member 470, the button portion 480 moves the moving member 470 into the recessed portion 241 in a fourth direction D4 (such as the left) orthogonal to the third direction D3 until the first rack interface 242 directly engages the recessed portion. The second rack interface 472 in 241. Therefore, the waistrest portion 400 can be fixed to the frame 210 again.

In this way, through the above-mentioned structure, the user can adjust the height position of the backrest part by himself, so that the backrest part can precisely and accurately abut the expected waist position of the user, delaying the timing of fatigue and backache discomfort.

Finally, the embodiments disclosed above are not intended to limit the creation. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the creation. Creating. Therefore, the scope of protection of this creation shall be determined by the scope of the attached patent application.

Claims (10)

A seat back of a seat includes: a frame having a hollow portion; a waistrest portion located in the hollow portion and slidably connected to two opposite inner sides of the frame for changing the waistrest portion to the frame Upper height; and a covering body covering the hollow portion and the waistrest portion of the frame. The backrest of a seat according to claim 1, wherein the frame includes two guide portions respectively formed on the two opposite inner sides of the frame; and the waistrest portion includes a bracket, a cushion body and two Slider, the pad body is fixedly connected to the bracket, and is located between the covering body and the bracket, the sliders are respectively located at two opposite ends of the bracket, and each of the sliders can slidably connect with the bracket One of these guides. The back of a seat according to claim 2, wherein the frame further includes two first connection portions, and the first connection portions are located on the two opposite inner sides of the frame; and the waistrest portion further includes two second connections. And two elastic elements, the second connecting portions are respectively located on the bracket, each of the second connecting portions detachably abuts one of the first connecting portions, and each of the elastic elements is coupled One of the brackets and the second connection portions is connected to move the second connection portion to the corresponding first connection portion. The back of a seat according to claim 3, wherein each of the first connecting portions further includes a recessed portion and a first rack interface, and the recessed portion is formed on one of the two opposite inner sides of the frame The first rack interface is located in the recess; and each of the second connecting portions includes a second rack interface, the second rack interfaces are located at two opposite ends of the bracket, and each of the The second rack interface directly engages the first rack interface in the recess. The back of the seat according to claim 4, wherein each of the second connecting portions includes: a moving member slidably located on the bracket, wherein the second rack interface is located on one side of the moving member To directly engage the second rack interface in the recessed portion; and a button portion slidably located on the bracket and pushed against the moving member, wherein the elastic element is coupled to the bracket and the button portion, Wherein, when the button portion is moved and the moving member is moved out of the recessed portion, the button portion compresses the elastic element, and the second rack interface is separated from the first rack interface, so that the waistrest portion can pass through the sliding portion. The blocks slide relative to the guide portion of the frame. The back of the seat according to claim 5, wherein each of the two opposite ends of the bracket is formed with a first guide groove and a second guide groove which overlap each other, and the long axis direction of the first guide groove and The long axis directions of the second guide grooves are orthogonal to each other, and the waistrest portion further includes two covers, each of which covers one of the second guide grooves removably, and is connected to the sliders. One of them, wherein the second guide slot is located between the first guide slot member and the cover, the moving member is slidably located in the first guide slot, and the button portion is slidably located in the second The guide groove is located between the moving member and the cover. The back of the seat according to claim 6, wherein the button portion has an inclined groove, and the long axis direction of the inclined groove intersects the long axis direction of the first guide groove and the second guide groove. The long axis direction; and the moving member has a convex block slidably confined in the inclined groove, wherein when the button part is pressed in a first direction, the button part passes through the inclined groove The convex piece of the moving member is pushed so that the moving member moves out of the recessed portion along a second direction, wherein the first direction and the second direction are orthogonal to each other. The back of the seat according to claim 7, wherein one of the lower sides of the bracket has an opening, and the button portion protrudes downward from the opening. The back of a seat as claimed in claim 1, wherein the waistrest is removably located on the frame. A seat with adjustable backrest height, comprising: a support base having a plurality of rollers; a seat back according to any one of claims 1 to 9; and a seat base connecting the support base and the seat back .