CN216603319U - Chair back angle adjusting device - Google Patents
Chair back angle adjusting device Download PDFInfo
- Publication number
- CN216603319U CN216603319U CN202123256056.8U CN202123256056U CN216603319U CN 216603319 U CN216603319 U CN 216603319U CN 202123256056 U CN202123256056 U CN 202123256056U CN 216603319 U CN216603319 U CN 216603319U
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- backrest
- rod
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- sliding block
- sliding
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Abstract
The utility model discloses a chair back angle adjusting device which comprises a backrest, connecting blocks, connecting plates and a fixing shaft, wherein the backrest is of a multi-section structure, the connecting block is fixedly arranged on the right side of the lowermost backrest, the connecting plate is fixedly connected to the right side of the connecting block, the backrest is connected with an adjacent backrest through the fixing shaft and the connecting sleeve, the lower backrest is connected with the fixing shaft in a welding mode, the upper backrest is connected with the connecting sleeve in a welding mode, the fixing shaft is connected with the connecting sleeve in a rotating mode, an inner groove is formed in the backrest, sliding blocks are attached to the inner parts of the inner grooves, sliding rods are fixedly mounted between the sliding blocks and the adjacent sliding blocks, the sliding blocks are connected with the backrest through springs, and the inner grooves in the two adjacent backrests correspond to each other. The chair back angle adjusting device can utilize the sectional type backrest on the device, so that the bending position of the backrest can be adjusted, and the functionality of the device is improved.
Description
Technical Field
The utility model relates to the technical field of wheelchairs, in particular to a chair back angle adjusting device.
Background
The wheelchair can assist people with mobility disabilities to move, and generally comprises three parts, namely wheels, armrests and a seat, the existing wheelchair is divided into a foldable wheelchair and a fixed wheelchair, and when the foldable wheelchair is used, the chair back is usually directly folded; the angle of the chair back can not be adjusted when the chair back of the wheelchair is folded, the bending position of the chair back can not be adjusted, the adjustable degree is low, the bending position can not be adjusted according to different requirements of users, and the functionality is poor.
We have therefore proposed a chair back angle adjustment device to solve the problems set forth above.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chair back angle adjusting device, which solves the problems that the wheelchair in the market cannot adjust the angle of a chair back when the chair back is folded, cannot adjust the bending position of the chair back and is difficult to adapt to different requirements of a user to adjust the bending position.
In order to achieve the purpose, the utility model provides the following technical scheme: a chair back angle adjusting device comprises a backrest, a connecting block, a connecting plate and a fixed shaft, wherein the backrest is of a multi-section structure, the right side of the lowermost backrest is fixedly provided with the connecting block, the right side of the connecting block is fixedly connected with a connecting plate, the backrest is connected with an adjacent backrest through a fixed shaft and a connecting sleeve, the lower backrest is connected with the fixed shaft in a welding mode, the upper backrest is connected with the connecting sleeve in a welding mode, the fixed shaft is connected with the connecting sleeve in a rotating way, an inner groove is formed in the backrest, a sliding block is attached to the inner part of the inner groove, a sliding rod is fixedly arranged between the sliding block and the adjacent sliding block, the sliding block is connected with the backrest through a spring, the inner grooves on the two adjacent backrests are mutually corresponding, the front end of the connecting plate is provided with a communicating groove, and an adjusting rod is movably arranged in the communicating groove.
Preferably, the backrest and the adjacent backrest form a rotating structure through a fixed shaft and a connecting sleeve, and the central axis of the fixed shaft and the central axis of the connecting sleeve are on the same straight line.
Preferably, the sliding block and the adjacent backrest form an elastic structure through a spring, and the sliding rod and the backrest form a sliding structure through the sliding block.
Preferably, the shapes of the sliding rod and the sliding block are circular arcs, the circular arc centers of the sliding rod and the sliding block are positioned on the central axis of the fixed shaft and the connecting sleeve, and the outer side of the sliding rod is fixedly provided with the extending back cushion.
Preferably, the adjusting rods are distributed on the connecting plate at equal intervals, the lap joint rods are arranged in the connecting plate in a penetrating mode, the lap joint rods correspond to the adjusting rods one to one, the pressure springs are sleeved on the outer sides of the lap joint rods, and the head end and the tail end of each pressure spring are connected with the lap joint rods and the connecting plate respectively.
Preferably, the surface of the lapping rod is provided with an extrusion groove, the inside of the lapping rod is provided with a clamping groove, the side surface of the backrest is provided with a limiting groove, and the backrest and an adjacent backrest form a clamping structure through the limiting groove and the lapping rod.
Compared with the prior art, the utility model has the beneficial effects that: this back of the chair angle adjusting device:
the sectional type backrest and the adjusting rod are arranged on the device, so that the device can adjust the angle of the backrest at a specific position, the functionality of the device is improved, and the defect that the angle of the whole backrest can be adjusted only within a small range when the existing wheelchair backrest is used is overcome;
the device utilizes inside slider, slide bar and the extension cushion of back for when the device guarantees to carry out angle modulation between the adjacent back, can also guarantee the comfort level of using through curved extension cushion, promoted the result of use of device.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the backrest and the connecting block of the present invention;
FIG. 3 is a schematic view of the connecting structure of the adjusting rod and the bridging rod of the present invention;
FIG. 4 is a schematic view of the lap joint rod and the backrest of the present invention in a separated state;
FIG. 5 is a schematic view of the connection between the backrest and the adjacent backrest of the present invention;
FIG. 6 is a schematic view of the structure at A in FIG. 5 according to the present invention.
In the figure: 1. a backrest; 2. connecting blocks; 3. a connecting plate; 4. a fixed shaft; 5. connecting sleeves; 6. an inner tank; 7. a spring; 8. a slider; 9. a slide bar; 10. an extended back cushion; 11. a communicating groove; 12. adjusting a rod; 13. a lap joint rod; 14. a pressure spring; 15. extruding a groove; 16. a card slot; 17. a limiting groove.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a chair back angle adjusting device comprises a backrest 1, connecting blocks 2, connecting plates 3 and a fixed shaft 4, wherein the backrest 1 is of a multi-section structure, the connecting block 2 is fixedly arranged on the right side of the lowermost backrest 1, the connecting plates 3 are fixedly connected to the right side of the connecting blocks 2, the backrest 1 is connected with the adjacent backrest 1 through the fixed shaft 4 and a connecting sleeve 5, the lower backrest 1 is connected with the fixed shaft 4 in a welding mode, the upper backrest 1 is connected with the connecting sleeve 5 in a welding mode, the fixed shaft 4 is connected with the connecting sleeve 5 in a rotating mode, the two adjacent backrests 1 can rotate through a rotating structure on the device, so that the angle adjusting position of the backrest 1 can be determined subsequently, an inner groove 6 is formed in the backrest 1, a sliding block 8 is installed inside the inner groove 6 in an attached mode, and a sliding rod 9 is fixedly installed between the sliding block 8 and the adjacent sliding block 8, the slider 8 is connected with the backrest 1 through the spring 7, the adjacent two-position backrest 1 can stably rotate through the slider 8, the inner grooves 6 in the adjacent two-position backrest 1 correspond to each other, the communicating groove 11 is formed in the front end of the connecting plate 3, the adjusting rod 12 is movably arranged in the communicating groove 11, and the clamping state between the two adjacent two-position backrest 1 is adjusted through the adjusting rod 12.
The backrest 1 forms a rotating structure with the adjacent backrest 1 through the fixed shaft 4 and the connecting sleeve 5, and the central axis of the fixed shaft 4 and the central axis of the connecting sleeve 5 are on the same straight line, so that the backrest 1 can rotate on the adjacent backrest 1, and the angle of the backrest is adjusted.
The sliding block 8 and the adjacent backrest 1 form an elastic structure through the spring 7, the sliding rod 9 and the backrest 1 form a sliding structure through the sliding block 8, the adjacent two backrests 1 can stably rotate through the sliding structure on the device, and meanwhile the spring 7 facilitates automatic resetting of the backrests 1 at various positions.
The shapes of the sliding rod 9 and the sliding block 8 are circular arcs, the circular arc centers of the sliding rod 9 and the sliding block 8 are located on the central axis of the fixed shaft 4 and the connecting sleeve 5, the extending back cushion 10 is fixedly mounted on the outer side of the sliding rod 9, and the extending back cushion 10 can be made of silica gel materials, so that the device can ensure the comfort degree in use after angle adjustment.
Adjust pole 12 equidistant distribution on connecting plate 3, the inside of connecting plate 3 is run through and is provided with overlap rod 13, one-to-one between overlap rod 13 and the regulation pole 12, the outside cover of overlap rod 13 is equipped with pressure spring 14, pressure spring 14 makes overlap rod 13 can stabilize the block in the inside of back 1, the head and the tail both ends of pressure spring 14 link to each other with overlap rod 13 and connecting plate 3 respectively, guarantee that overlap rod 13 supports the left back 1 of device all the time, make the back 1 block of each position each other.
The working principle is as follows: when the chair back angle adjusting device is used, the device is characterized in that the lowest backrest 1 is arranged on a chair, then bending the corresponding backrest 1 according to the requirement to realize the angle adjusting function, as shown in figures 1-4, firstly adjusting the uppermost adjusting rod 12 of the pushing device, so that the adjusting rod 12 slides in the communicating groove 11 in the connecting plate 3, and the front end of the adjusting rod 12 is pressed against the inclined plane of the extrusion groove 15, thereby the adjusting rod 12 moves into the clamping groove 16 along the extrusion groove 15, at the moment, the pressure spring 14 causes the overlapping rod 13 to press the adjusting rod 12, the whole device is in a stable state, the whole state of the device is shown in figure 4, the front end of the lapping rod 13 is separated from the limit groove 17 in the backrest 1, at this time, the backrest 1 at the top of the device can be adjusted in angle, and so on, the function of adjusting the angle of the corresponding backrest 1 is completed by pushing the corresponding adjusting rod 12;
as shown in figures 1-2 and 5-6, when the angle of the device is adjusted, the backrest 1 rotates on the adjacent backrest 1 through the fixed shaft 4 and the connecting sleeve 5, so that the sliding block 8 slides in the inner groove 6, the spring 7 is stretched, the elasticity of the spring 7 ensures that the bending angle of the two adjacent backrests 1 is not too large, and meanwhile, after the arc-shaped sliding rod 9 and the extending back cushion 10 ensure that the angle is adjusted, the chair can be comfortable and practical, and the comfort level of a user is ensured.
The above is the working process of the whole device, and the content not described in detail in this specification is the prior art well known to those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a back of chair angle adjusting device, includes back (1), connecting block (2), connecting plate (3) and fixed axle (4), its characterized in that: the backrest (1) is of a multi-section structure, the right side of the lowermost backrest (1) is fixedly provided with the connecting block (2), the right side of the connecting block (2) is fixedly connected with the connecting plate (3), the backrest (1) is connected with the adjacent backrest (1) through the fixing shaft (4) and the connecting sleeve (5), the lower backrest (1) is connected with the fixing shaft (4) in a welding mode, the upper backrest (1) is connected with the connecting sleeve (5) in a welding mode, the fixing shaft (4) is connected with the connecting sleeve (5) in a rotating mode, an inner groove (6) is formed in the backrest (1), a sliding block (8) is attached to the inner part of the inner groove (6), a sliding rod (9) is fixedly installed between the sliding block (8) and the adjacent sliding block (8), and the sliding block (8) is connected with the backrest (1) through a spring (7), the inner grooves (6) on two adjacent backrests (1) correspond to each other, the front end of the connecting plate (3) is provided with a communicating groove (11), and an adjusting rod (12) is movably arranged in the communicating groove (11).
2. The chair back angle adjustment device of claim 1, wherein: backrest (1) constitute rotating-structure through between fixed axle (4) and adapter sleeve (5) and adjacent backrest (1), the axis of fixed axle (4) and the axis of adapter sleeve (5) are on same straight line.
3. The chair back angle adjustment device of claim 2, wherein: the sliding block (8) and the adjacent backrest (1) form an elastic structure through the spring (7), and the sliding rod (9) and the backrest (1) form a sliding structure through the sliding block (8).
4. The chair back angle adjustment device of claim 3, wherein: the shapes of the sliding rod (9) and the sliding block (8) are arc-shaped, the circle centers of the arc of the sliding rod (9) and the sliding block (8) are positioned on the central axis of the fixed shaft (4) and the connecting sleeve (5), and the outer side of the sliding rod (9) is fixedly provided with an extending back cushion (10).
5. The chair back angle adjustment device of claim 4, wherein: adjust pole (12) equidistant distribution on connecting plate (3), the inside of connecting plate (3) is run through and is provided with overlap rod (13), overlap rod (13) and adjust the one-to-one between pole (12), the outside cover of overlap rod (13) is equipped with pressure spring (14), the head and the tail both ends of pressure spring (14) link to each other with overlap rod (13) and connecting plate (3) respectively.
6. The chair back angle adjustment device of claim 5, wherein: extrusion groove (15) have been seted up on the surface of overlap joint pole (13), draw-in groove (16) have been seted up to the inside of overlap joint pole (13), spacing groove (17) have been seted up to the side of back (1), back (1) constitutes the block structure through between spacing groove (17) and overlap joint pole (13) and adjacent back (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256056.8U CN216603319U (en) | 2021-12-23 | 2021-12-23 | Chair back angle adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256056.8U CN216603319U (en) | 2021-12-23 | 2021-12-23 | Chair back angle adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216603319U true CN216603319U (en) | 2022-05-27 |
Family
ID=81706489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123256056.8U Active CN216603319U (en) | 2021-12-23 | 2021-12-23 | Chair back angle adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216603319U (en) |
-
2021
- 2021-12-23 CN CN202123256056.8U patent/CN216603319U/en active Active
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