CN209883545U

CN209883545U - Adjustable chair waist rest

Info

Publication number: CN209883545U
Application number: CN201822250330.2U
Authority: CN
Inventors: 王喜永
Original assignee: Zhejiang Anji Hengchang Chair Industry Co Ltd
Current assignee: Zhejiang Anji Hengchang Chair Industry Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-01-03
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses a seat waist is leaned on with adjustable, lean on, install pole and connection including the waist leans on and installs the regulation structure of pole, the installation pole is "Y" font, including the cursor slide of a top fixed arm and two parallels, two form the unchangeable spout of a width between the cursor slide, adjust the structure including connecting the waist is leaned on adjusts seat, sliding seat and retaining member, it follows to adjust the seat pass in the spout, the sliding seat is located adjust the seat left and right sides and act on the cursor slide, the retaining member is located adjust a tip, the waist is by can adjust the drive of structure and follow down the cursor slide slides from top to bottom. The utility model has simple structure, convenient manufacture and assembly and low manufacture cost; the use is convenient, the adjusting range is large, the adjusting direction is comprehensive, the application range is wide, and the comfort level is high; the structure is firm, long service life.

Description

Adjustable chair waist rest

Technical Field

The utility model belongs to the field of furniture, relate to the waist and lean on, in particular to seat waist is leaned on with adjustable.

Background

With the increase of work and reading time of modern people, the modern people must sit on the chair for a long time, and sit still for a long time, so that the spine of a human body is pressed for a long time by the weight to cause serious injuries such as intervertebral disc protrusion, displacement and the like, and the modern people are very easy to generate serious sequelae such as sciatica or ankylosing spondylitis and the like. Therefore, many manufacturers can add a waist support to the backrest when the chair is produced, so that the waist of a user can be supported when the user sits on the chair, and the fatigue caused by long-time sitting can be avoided.

However, in the prior art, the waist rest is generally fixed to the seat back by a fixing structure, and the position of the waist rest cannot be adjusted according to the body shape or actual requirements of a user, so that the waist rest is poor in flexibility and cannot meet the actual requirements of the user.

Chinese patent CN108209278A discloses a seat with waist leans on position control function, including the back with install in the waist of back front end and lean on, the waist leans on the free regulation through position adjusting lug, crossbeam, guide slot, spacing groove and arc fixture block etc. and realizes the position that the waist leaned on, convenient operation and waist lean on comparatively firm. However, the waist rest has a complex structure, more parts, high possibility of failure and high manufacturing cost, and the adjustable range of the waist rest in the vertical direction is limited, so that the use requirement of people cannot be completely met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seat waist is leaned on with adjustable, simple structure, convenient to use, and the range of regulation is big, and firm comfortable.

In order to realize the purpose, the technical scheme of the utility model is that: an adjustable chair waist rest comprises a waist rest, a mounting rod and an adjusting structure for connecting the waist rest and the mounting rod, the mounting rod is Y-shaped and comprises a top fixing arm and two left and right parallel sliding arms arranged at the lower end part of the top fixing arm, the top fixing arm is fixedly connected with the top of the seat back, the sliding arms are fixedly connected with the bottom of the seat back, a sliding groove with constant width is formed between the two sliding arms, the adjusting structure comprises an adjusting seat, a sliding seat and a locking piece, the sliding seat is positioned at the left side and the right side of the adjusting seat and acts on the sliding arm, the adjusting seat passes through the sliding groove, the front end of the waist rest is connected with the locking piece, the locking piece is arranged on the adjusting seat and is respectively positioned at the front side and the rear side of the sliding groove, and the waist rest can be driven by the adjusting structure to slide up and down along the sliding arm.

Preferably, the regulation seat is kept away from the cylindric of sliding seat one end for being equipped with the external screw thread, the retaining member is established for the cover adjust the outside adjusting nut of seat, works as when adjusting nut loosens, it is portable adjust from top to bottom the regulation seat, when screwing up adjusting nut is during, can fix.

Preferably, the transverse section of the side, close to the waist rest of the seat, of the sliding arm is arc-shaped, and the sliding seat is provided with a bending structure matched with the arc-shaped sliding arm, so that the sliding seat and the sliding arm are more stable and are not easy to shake, and meanwhile, the sliding between the sliding seat and the sliding arm is smoother.

Preferably, the connection part of the sliding seat and the adjusting seat is further provided with an arc-shaped toggle plate corresponding to the inner side of the sliding arm, so that the sliding seat is perfectly attached to the sliding arm, and the stability is improved.

Preferably, an aluminum base plate sleeved on the adjusting seat is further arranged between the adjusting nut and the sliding arm, so that the fixing effect is improved, and the adjusting nut can rotate more smoothly.

As preferred, adjust the inside flexible passageway that has seted up the link up of seat, flexible passageway inside is provided with flexible subassembly, including being close to the telescopic link of waist by one side and the screw rod of opposite side, the telescopic link tip with the waist leans on fixed connection, flexible passageway set up screw rod one side be provided with the internal thread of the screw thread looks adaptation of screw rod, when rotating during the screw rod, can make the telescopic link lean on to be close to the seat waist, realize the front and back regulation that the waist leaned on.

Preferably, the telescopic channel is coaxial with the adjusting nut, so that the structure of the adjusting seat is more regular, the manufacturing difficulty and the manufacturing cost are reduced, and the installation and use stability is improved.

Preferably, the telescopic passage is internally provided with a first limiting part protruding inwards in the radial direction close to one side of the waist support, correspondingly, the telescopic rod is far away from one end of the waist support, a second limiting part protruding outwards in the radial direction, the telescopic passage is internally provided with a third limiting part protruding inwards in the radial direction close to one side of the waist support, correspondingly, the screw rod is far away from one end of the waist support, a fourth limiting part protruding outwards in the radial direction is radially arranged, the telescopic rod and the screw rod are prevented from being separated from the adjusting seat, and the third limiting part is close to one end of the screw rod, which is provided with an internal thread matched with the thread of the screw rod, so that the screw rod can normally rotate and advance.

Preferably, the telescopic rod is further sleeved with a return spring, the return spring is located between the first limit phase and the second limit phase, two ends of the return spring are respectively abutted against the first limit phase and the second limit phase, the return spring can increase the stability of the waist rest, and the telescopic rod can be conveniently adjusted in a telescopic mode.

Preferably, the end of the screw rod is further provided with a nut-shaped rotating part, and the rotating part can enable the screw rod to rotate more conveniently in a labor-saving mode.

As preferred, the waist is leaned on the seat through the waist and is connected adjust the seat, the waist is leaned on through spring coupling the waist leans on the seat, the spring both ends respectively with the waist lean on with seat fixed connection is leaned on to the waist, and the spring has the cushioning effect, can increase the travelling comfort, and simultaneously, setting up of spring also enables the waist and leans on rocking or rotatory of seat certain degree, makes the waist leans on more laminating people's local portion, makes more comfortable.

Preferably, the waist is by the same cushion that sets up side by side about two, passes through respectively spring fixed connection the seat is leaned on to the waist, and two independent waist are by the cushion, can laminate people's back more perfectly, effectively increase the comfort level.

Preferably, the mounting rod is a curved arc-shaped mounting rod, the convex direction of the arc-shaped mounting rod faces the seat back, and the curved structure can increase the supporting effect of the mounting rod on the lumbar support, effectively avoid backward bending of the mounting rod and prolong the service life according to the angle of structural mechanics.

The beneficial effects of the utility model are that:

1. the structure is simple, the manufacture and the assembly are convenient, and the manufacture cost is low;

2. the use is convenient, the adjusting range is large, the adjusting direction is comprehensive, and the application range is wide;

3. the structure is stable, and the service life is long;

4. the comfort level is higher.

Drawings

Fig. 1 is a front view of embodiment 1 of the present invention;

fig. 2 is a side view of embodiment 1 of the present invention;

fig. 3 is a perspective view of embodiment 1 of the present invention;

fig. 4 is a top view of embodiment 1 of the present invention with the mounting rod removed;

fig. 5 is a cross-sectional view of an adjusting structure in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of embodiment 2 of the present invention;

fig. 7 is a schematic structural view of embodiment 3 of the present invention;

fig. 8 is a schematic structural view of embodiment 4 of the present invention;

the items in the figure are respectively: the waist rest comprises a waist rest body 1, an installation rod 2, an adjustment structure 3, a top fixing arm 4, a sliding arm 5, a sliding groove 6, an adjustment seat 9, a sliding seat 10, an adjustment nut 11, a toggle plate 12, a backing plate 13, a telescopic channel 14, a telescopic rod 15, a screw rod 16, a first limit 17, a second limit 18, a third limit 19, a fourth limit 20, a reset spring 21, a rotating part 22, a waist rest seat 23, a spring 24 and a back cushion 25.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, and it should be noted that, in the following description of the embodiments, the positional relationship between the upper, lower, left, right, etc. is referred to fig. 1, which is only for the purpose of making the description more concise and intuitive, and is not a limitation to the technical features of the present invention.

Example 1

As shown in fig. 1 ~ 3, an adjustable chair lumbar support comprises a lumbar support 1, an installation rod 2 and an adjusting structure 3 connected with the lumbar support 1 and the installation rod 2, wherein the installation rod 2 is in a Y shape and comprises a top fixing arm 4 and two left and right parallel sliding arms 5 arranged at the lower end of the top fixing arm 4, the top fixing arm 4 is fixedly connected with the top of a chair backrest, the sliding arms 5 are fixedly connected with the bottom of the chair backrest, a sliding groove 6 with uniform width is formed between the two sliding arms 5, the adjusting structure 3 comprises an adjusting seat 9, a sliding seat 10 and a locking member, the sliding seat 10 is positioned at the left and right sides of the front end of the adjusting seat 9 and acts on the sliding arms 5, the adjusting seat 9 passes through the sliding groove 6, the front end of the adjusting seat is connected with the lumbar support 1, the locking member is arranged on the adjusting seat 9 and the sliding seat 10 is respectively positioned at the front and back sides of the sliding groove 6, and the lumbar support 1 can slide up and down along the sliding arm 5 under the driving of the adjusting structure 3.

In this embodiment, the screw that link up is still seted up at both ends about the installation pole, through the screw, utilize screw fixed connection in the upper and lower both ends of backrest back to, the backrest in this embodiment is the common office chair back that has certain crookedness and be provided with the net surface.

Wherein, adjust seat 9 and keep away from cylindric for being equipped with the external screw thread of adjusting 10 one end of seat, the retaining member is established for the cover adjust the outside adjusting nut 11 of seat, work as when adjusting nut 11 loosens, portable adjust seat 9 and adjust from top to bottom, when screwing up during adjusting nut 11, can fix.

Furthermore, the transverse section of the side, close to the waist rest of the seat, of the sliding arm 5 is arc-shaped, and the sliding seat 10 has a bending structure matched with the arc-shaped sliding arm 5, so that the sliding seat 10 and the sliding arm 5 are more stable and are not easy to shake, and the sliding between the sliding seat 10 and the sliding arm 5 is smoother.

Furthermore, the connection between the sliding seat 10 and the adjusting seat 9 is further provided with an arc-shaped toggle plate 12 corresponding to the inner side of the sliding arm 5, so that the sliding seat 10 and the sliding arm 5 are perfectly attached, and the stability is improved.

In this embodiment, an aluminum backing plate 13 sleeved on the adjusting seat 9 is further disposed between the adjusting nut 11 and the sliding arm 5, so as to improve the fixing effect and enable the rotation of the adjusting nut 11 to be smoother.

As shown in fig. 5, a telescopic channel 14 is formed inside the adjusting seat 9 and runs through the adjusting seat, a telescopic assembly is arranged inside the telescopic channel 14 and comprises a telescopic rod 15 close to one side of the lumbar support and a screw rod 16 on the other side of the lumbar support, the end of the telescopic rod 15 is fixedly connected with the lumbar support 1, an internal thread matched with the screw thread of the screw rod 16 is arranged on one side of the telescopic channel 14, and when the screw rod 16 is rotated, the telescopic rod 15 can be close to the seat backrest, so that the front and back adjustment of the lumbar support 1 can be realized.

Furthermore, the telescopic channel 14 is coaxial with the adjusting nut 11, so that the structure of the adjusting seat 9 is more regular, the manufacturing difficulty and the manufacturing cost are reduced, and the installation and use stability is improved.

And, the radial that is close to waist in the flexible passageway 14 leans on one side is equipped with spacing one 17 of inside bellied, and is corresponding, the flexible passageway 15 is kept away from the radial of waist leans on one end is equipped with two spacing 18 of outside bellied, keep away from in the flexible passageway 14 the radial of waist leans on one side is equipped with three spacing 19 of inside bellied, and is corresponding, the radial that the screw rod 16 is kept away from the waist leans on one end is equipped with four spacing 20 of outside bellied, prevents that flexible link 15 and screw rod 16 break away from adjust seat 9, the one end that three spacing 19 is close to screw rod 16 is provided with the internal thread with the screw rod 16's screw thread looks adaptation to guarantee the normal rotation of screw rod 16 is advanced.

Further, still the cover is equipped with reset spring 21 on the telescopic link 15, reset spring 21 is located between spacing one 17 and the spacing two 18, its both ends respectively with spacing one 17 is inconsistent with spacing two 18, and this reset spring 21 can increase the stability that the waist leaned on 1, and the telescopic link 15 of being convenient for carries out the telescopic adjustment.

The end of the screw 16 is further provided with a nut-shaped rotating part 22, and the rotating part 22 can enable the screw 16 to rotate more conveniently in a labor-saving manner.

Example 2

As shown in fig. 6, waist leans on 1 to connect through waist leans on seat 23 adjust seat 9, waist leans on 1 to connect through spring 24 waist leans on seat 23, waist leans on seat 23 fixed connection adjust seat 9, spring 24 both ends respectively with waist leans on 1 with waist leans on seat 23 fixed connection, spring 24 has the cushioning effect, can increase the travelling comfort, and simultaneously, spring 24's setting also enables rocking or rotation of waist leans on seat 23 certain degree, makes the waist leans on 1 more to laminate people's local, makes more comfortable.

Example 3

As shown in fig. 7, the lumbar support 1 is two identical back cushions 25 arranged side by side left and right, and the two independent back cushions 25 are respectively fixedly connected to the lumbar support seat 23 and the lumbar support seat 25 through the springs 24, so that the lumbar support seat can be perfectly attached to the back of a person, and the comfort level is effectively increased.

Example 4

As shown in fig. 8, the mounting rod 2 is a curved arc-shaped mounting rod, and the arc-shaped protruding direction of the mounting rod faces the lumbar support, and the knowledge of structural mechanics shows that the curved structure can increase the supporting effect of the mounting rod 2 on the lumbar support 1, thereby effectively avoiding backward bending of the mounting rod 2 and prolonging the service life.

Claims

1. An adjustable seat lumbar, characterized in that: including the waist by (1), install pole (2) and connect the waist by (1) and install regulation structure (3) of pole (2), install pole (2) including a top fixed arm (4) and set up in parallel slide arm (5) about two of tip under top fixed arm (4), two form a spout (6) that the width is even between slide arm (5), adjust structure (3) including adjusting seat (9), sliding seat (10) and retaining member, sliding seat (10) are located adjust the seat (9) left and right sides and act on slide arm (5), adjust seat (9) follow spout (6) pass, its front end is connected the waist by (1), the retaining member sets up on adjusting seat (9), with sliding seat (10) are located the front and back both sides of spout (6) respectively, the waist rest (1) can slide up and down along the sliding arm (5) under the driving of the adjusting structure (3).

2. An adjustable seat lumbar according to claim 1, wherein: the adjusting seat (9) is far away from one end of the sliding seat (10) and is cylindrical with external threads, and the locking piece is sleeved with an adjusting nut (11) outside the adjusting seat.

3. An adjustable seat lumbar according to claim 2, wherein: adjust seat (9) inside and offer flexible passageway (14) that link up, flexible passageway (14) inside is provided with flexible subassembly, including being close to the waist leans on telescopic link (15) of one side and screw rod (16) of opposite side, telescopic link (15) tip with the waist leans on (1) to be connected, flexible passageway (14) set up screw rod (16) one side be provided with the internal thread of the screw thread adaptation of screw rod (16).

4. An adjustable seat lumbar according to claim 3, wherein: be close to in flexible passageway (14) the waist leans on the radial of one side to be equipped with inside bellied spacing one (17), and is corresponding, telescopic link (15) are kept away from the waist leans on the radial of one end to be equipped with outside bellied spacing two (18), keep away from in flexible passageway (14) the waist leans on the radial of one side to be equipped with inside bellied spacing three (19), and is corresponding, screw rod (16) are kept away from the waist leans on the radial of one end to be equipped with outside bellied spacing four (20), spacing three (19) are close to the one end of screw rod (16) be provided with the internal thread of the screw thread looks adaptation of screw rod (16), in order to guarantee the normal rotation of screw rod (16) is advanced.

5. An adjustable seat lumbar according to claim 2, wherein: the transverse section of one side, close to the waist rest (1), of the sliding arm (5) is arc-shaped, and the sliding seat (10) is provided with a bending structure matched with the arc-shaped sliding arm (5).

6. An adjustable seat lumbar according to claim 2 or 5, wherein: the joint of the sliding seat (10) and the adjusting seat (9) is also provided with an arc-shaped toggle plate (12) corresponding to the inner side of the sliding arm (5).

7. An adjustable seat lumbar according to claim 2, wherein: a base plate (13) sleeved on the adjusting seat (9) is further arranged between the adjusting nut (11) and the sliding arm (5).

8. An adjustable seat lumbar according to claim 4, wherein: still the cover is equipped with reset spring (24) on telescopic link (15), reset spring (24) are located between spacing one (17) and spacing two (18), its both ends respectively with spacing one (17) and spacing two (18) are inconsistent.

9. An adjustable seat lumbar according to claim 1 or 2, characterized in that: waist is leaned on (1) to be connected through waist and is leaned on seat (23) adjust seat (9), waist is leaned on (1) to be connected through spring (24) waist is leaned on seat (23), spring (24) both ends respectively with waist is leaned on (1) with waist is leaned on seat (23) fixed connection.

10. An adjustable seat lumbar according to claim 9, wherein: the waist rest (1) is two same back cushions (25) which are arranged side by side from left to right and are respectively fixedly connected with the waist rest seat (23) through the springs (24).