CN216220819U

CN216220819U - Comfortable office chair capable of being lifted up

Info

Publication number: CN216220819U
Application number: CN202122693028.6U
Authority: CN
Inventors: 俞柏青
Original assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Current assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-08
Anticipated expiration: 2031-11-05

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to an upward comfortable office chair which comprises a chair cushion and a chair back, wherein fixing plates are fixedly arranged on the front side and the rear side of the chair cushion, a plurality of supporting columns are fixedly arranged at the bottom of the chair cushion, the bottom of the supporting columns is fixedly provided with a same supporting plate, a transverse plate is fixedly arranged on one side of the supporting plate, vertical plates are fixedly arranged on the front side and the rear side of the bottom of the transverse plate, the two vertical plates are mutually close and rotatably connected with a same connecting shaft, and a headrest is fixedly arranged at the top of the chair back. The chair back of the office chair is convenient to adjust by a large angle, so that the chair can have a sit-up rest conveniently, the comfort is improved, the adjustment is labor-saving, and the operation is easy.

Description

Comfortable office chair capable of being lifted up

Technical Field

The utility model relates to the technical field of office chairs, in particular to a comfortable office chair capable of being lifted upwards.

Background

Medical research shows that the sitting posture is most comfortable and natural when the chair is kept leaning backwards for a certain angle, and the chair is far healthier than straight waist boards. Conversely, a straight sitting position can deform the spine in compression, affecting the surrounding muscles and ligaments over time, causing back pain, spine deformities, and other chronic back diseases. Research shows that human body structure is not suitable for sitting for a long time, and unfortunately, modern life needs most of the global population to sit and work. There are records that back pain causes billions of worldwide economic losses. Medically, the healthier posture of the spine is lying down, but it is difficult to do so in the office, where about eight adults suffer back pain. In reality, the wide-range vision deterioration and bow-shaped humpback of teenagers are undoubtedly related to long-time bending over.

Most of the existing office chairs have limited adjusting angles for chair backs, and the fixed stability after adjustment is poor, so that a user is inconvenient to sit up for rest, and the comfort of use is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that most of the existing office chairs have limited adjusting angles for chair backs, and the fixed stability after adjustment is poor, so that a user is inconvenient to have a sit-up rest and the use comfort is affected.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a comfortable office chair capable of being lifted up comprises a chair cushion and a chair back, wherein fixed plates are fixedly mounted on the front side and the rear side of the chair cushion respectively, a plurality of support columns are fixedly mounted at the bottom of the chair cushion, a same support plate is fixedly mounted at the bottom ends of the support columns, a transverse plate is fixedly mounted on one side of the support plate, vertical plates are fixedly mounted on the front side and the rear side of the bottom of the transverse plate respectively, two vertical plates are mutually close to each other and rotatably connected with a same connecting shaft, a headrest is fixedly mounted at the top of the chair back, a connecting plate is fixedly mounted on one side of the chair back and rotatably sleeved on the outer side of the connecting shaft, a transmission gear is fixedly sleeved on the outer side of the connecting shaft, a sliding groove is formed in the top of the support plate, a sliding plate is slidably mounted in the sliding groove, a rack is fixedly mounted at the bottom of one side of the sliding plate and meshed with the transmission gear, and a same first lead screw is rotatably connected on the inner walls of the two sides of the sliding groove, the worm wheel and the driving gear are fixedly mounted on the first lead screw, one side, close to each other, of the two fixing plates is rotatably connected with the same worm, the worm is meshed with the worm wheel, a mounting groove is formed in the inner wall of one side of the sliding groove, the second lead screw is mounted in the mounting groove in a rotating mode, a driven gear is fixedly mounted on the second lead screw, the driving gear is meshed with the driven gear, two threaded holes are formed in one side of the sliding plate, and the first lead screw and the second lead screw are respectively in threaded connection in the corresponding threaded holes.

Preferably, a guide plate is fixedly mounted on the inner wall of one side of the sliding groove, and the sliding plate is slidably sleeved on the outer side of the guide plate to guide the sliding plate.

Preferably, the front end of the worm is fixedly provided with a knob, and the outer side of the knob is provided with a plurality of anti-skid protrusions, so that the rotation of the worm is conveniently controlled.

Preferably, the top fixed mounting of fixed plate has the support, and the top fixed mounting of support has the handrail, is convenient for take the hand.

Preferably, a positioning plate is fixedly mounted on the inner wall of the bottom of the sliding groove, and the positioning plate is rotatably sleeved on the outer sides of the first screw rod and the second screw rod to rotatably position the first screw rod and the second screw rod.

Preferably, a guide hole is formed in one side of the positioning plate, and the rack is slidably mounted in the guide hole to guide the rack.

According to the comfortable office chair capable of lying on the back, the worm is controlled to rotate through the hand holding knob, the worm drives the first screw rod to rotate through meshing with the worm wheel, the first screw rod drives the second screw rod to rotate through meshing of the driving gear and the driven gear, the first screw rod and the second screw rod are respectively matched with threads of corresponding threaded holes and drive the sliding plate to move transversely under the guiding action of the guide plate, the sliding plate drives the rack to move transversely synchronously, the rack drives the connecting shaft to rotate through meshing with the transmission gear, and the connecting shaft drives the chair back to rotate through the connecting plate, so that the angle of the chair back is adjusted, and the angle adjusting range is wider;

according to the comfortable office chair capable of being lifted up, operation is more labor-saving through speed reduction and torque increase transmission of the worm and the worm wheel in the adjusting process, the knob is loosened after adjustment is completed, movement of the rack is limited through the self-locking effect of thread transmission, the angle of the chair back is fixed, and the stability of fixing the angle of the chair back is further improved through the self-locking property of the worm and the worm wheel transmission;

the chair back of the office chair is reasonable in structural design, convenient for large-angle adjustment of the chair back of the office chair, convenient for sit-up rest, comfortable, labor-saving in adjustment, easy to operate and high in reliability.

Drawings

Fig. 1 is a schematic perspective view of a comfortable office chair with a reclining function according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a comfortable office chair capable of reclining according to the present invention;

fig. 3 is a schematic structural diagram of a portion a of a comfortable office chair capable of reclining according to the present invention.

In the figure: 1. a seat cushion; 2. a chair back; 3. a support plate; 4. a headrest; 5. a fixing plate; 6. a worm; 7. a knob; 8. a connecting plate; 9. a handrail; 10. a chute; 11. a transverse plate; 12. a connecting shaft; 13. a transmission gear; 14. a rack; 15. a driving gear; 16. a driven gear; 17. a first lead screw; 18. a second lead screw; 19. A worm gear; 20. a slide plate; 21. and (7) positioning the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a comfortable office chair capable of lying on back comprises a chair cushion 1 and a chair back 2, wherein fixing plates 5 are fixedly arranged on the front side and the rear side of the chair cushion 1, a plurality of support columns are fixedly arranged at the bottom of the chair cushion 1, the same support plate 3 is fixedly arranged at the bottom ends of the support columns, a transverse plate 11 is fixedly arranged on one side of the support plate 3, vertical plates are fixedly arranged on the front side and the rear side of the bottom of the transverse plate 11, the two vertical plates are mutually close to each other and rotatably connected with the same connecting shaft 12, a headrest 4 is fixedly arranged at the top of the chair back 2, a connecting plate 8 is fixedly arranged on one side of the chair back 2, the connecting plate 8 is rotatably sleeved on the outer side of the connecting shaft 12, a transmission gear 13 is fixedly sleeved on the outer side of the connecting shaft 12, a chute 10 is arranged at the top of the support plate 3, a sliding plate 20 is slidably arranged in the chute 10, and a rack 14 is fixedly arranged at the bottom of one side of the sliding plate 20, the rack 14 is meshed with the transmission gear 13, the inner walls of two sides of the sliding groove 10 are connected with the same first lead screw 17 in a rotating mode, a worm wheel 19 and a driving gear 15 are fixedly mounted on the first lead screw 17, one side, close to each other, of the two fixing plates 5 is connected with the same worm 6 in a rotating mode, the worm 6 is meshed with the worm wheel 19, a mounting groove is formed in the inner wall of one side of the sliding groove 10, a second lead screw 18 is mounted in the mounting groove in a rotating mode, a driven gear 16 is fixedly mounted on the second lead screw 18, the driving gear 15 is meshed with the driven gear 16, two threaded holes are formed in one side of the sliding plate 20, and the first lead screw 17 and the second lead screw 18 are respectively in the corresponding threaded holes in a threaded mode.

In the utility model, a guide plate is fixedly arranged on the inner wall of one side of the chute 10, and the sliding plate 20 is sleeved on the outer side of the guide plate in a sliding manner to guide the sliding plate 20.

In the utility model, the front end of the worm 6 is fixedly provided with the knob 7, and the outer side of the knob 7 is provided with a plurality of anti-skid bulges, so that the rotation of the worm 6 is convenient to control.

In the utility model, the top of the fixing plate 5 is fixedly provided with the bracket, and the top of the bracket is fixedly provided with the handrail 9, thereby facilitating the hand-building.

In the utility model, the positioning plate 21 is fixedly arranged on the inner wall of the bottom of the chute 10, and the positioning plate 21 is rotatably sleeved on the outer sides of the first screw rod 17 and the second screw rod 18 to rotatably position the first screw rod 17 and the second screw rod 18.

In the utility model, one side of the positioning plate 21 is provided with a guide hole, and the rack 14 is slidably arranged in the guide hole to guide the rack 14.

In the utility model, when in use, the knob 7 is held by hand to control the worm 6 to rotate, the worm 6 drives the first screw rod 17 to rotate through meshing with the worm wheel 19, the first screw rod 17 drives the second screw rod 18 to rotate through meshing of the driving gear 15 and the driven gear 16, the first screw rod 17 and the second screw rod 18 are respectively matched with the threads of corresponding threaded holes and drive the sliding plate 20 to transversely move under the guiding action of the guide plate, the sliding plate 20 drives the rack 14 to synchronously transversely move, the rack 14 drives the connecting shaft 12 to rotate through meshing with the transmission gear 13, the connecting shaft 12 drives the chair back 2 to rotate through the connecting plate 8, so that the chair back 2 is angularly adjusted, the angular adjustment range is wider, in the adjustment process, the operation is more labor-saving through the speed reduction and torque increase transmission of the worm 6 and the worm wheel 19, and the knob 7 is loosened after the adjustment is completed, thereby the removal of rack 14 is spacing through the driven auto-lock effect of screw thread to fix back of the chair 2 angle, and further promote the stability fixed to back of the chair 2 angle through the driven auto-lock nature of worm 6 and worm wheel 19.

Claims

1. The comfortable office chair capable of facing upward comprises a chair cushion (1) and a chair back (2) and is characterized in that fixed plates (5) are fixedly mounted on the front side and the rear side of the chair cushion (1) respectively, a plurality of supporting columns are fixedly mounted on the bottom of the chair cushion (1), the bottom of the supporting columns is fixedly mounted with a same supporting plate (3), a transverse plate (11) is fixedly mounted on one side of the supporting plate (3), vertical plates are fixedly mounted on the front side and the rear side of the bottom of the transverse plate (11), the two vertical plates are close to each other and rotatably connected with a same connecting shaft (12), a headrest (4) is fixedly mounted on the top of the chair back (2), a connecting plate (8) is fixedly mounted on one side of the chair back (2), the connecting plate (8) is rotatably sleeved on the outer side of the connecting shaft (12), a transmission gear (13) is fixedly sleeved on the outer side of the connecting shaft (12), a chute (10) is formed in the top of the supporting plate (3), a sliding plate (20) is arranged in the sliding groove (10) in a sliding way, a rack (14) is fixedly arranged at the bottom of one side of the sliding plate (20), the rack (14) is meshed with the transmission gear (13), the inner walls of the two sides of the sliding groove (10) are rotatably connected with the same first screw rod (17), the first screw rod (17) is fixedly provided with a worm wheel (19) and a driving gear (15), one side of the two fixing plates (5) close to each other is rotatably connected with the same worm (6), the worm (6) is meshed with the worm wheel (19), an installation groove is arranged on the inner wall of one side of the sliding groove (10), a second screw rod (18) is rotatably installed in the installation groove, a driven gear (16) is fixedly installed on the second screw rod (18), a driving gear (15) is meshed with the driven gear (16), two threaded holes are formed in one side of the sliding plate (20), and the first screw rod (17) and the second screw rod (18) are in threaded connection with the corresponding threaded holes respectively.

2. The comfortable office chair with the adjustable back rest as claimed in claim 1, wherein a guide plate is fixedly mounted on the inner wall of one side of the sliding chute (10), and the sliding plate (20) is slidably sleeved on the outer side of the guide plate.

3. A comfortable office chair as claimed in claim 1, wherein the front end of the worm (6) is fixedly provided with a knob (7), and the outer side of the knob (7) is provided with a plurality of anti-slip protrusions.

4. A comfortable office chair with adjustable back according to claim 1, wherein the top of the fixed plate (5) is fixedly provided with a bracket, and the top of the bracket is fixedly provided with an armrest (9).

5. The comfortable office chair with the adjustable back rest as claimed in claim 1, wherein a positioning plate (21) is fixedly mounted on the inner wall of the bottom of the sliding chute (10), and the positioning plate (21) is rotatably sleeved on the outer sides of the first screw rod (17) and the second screw rod (18).

6. A comfortable office chair as claimed in claim 5, wherein the positioning plate (21) has a guide hole at one side, and the rack (14) is slidably mounted in the guide hole.