CN221308631U - Backrest device capable of being adjusted steplessly - Google Patents
Backrest device capable of being adjusted steplessly Download PDFInfo
- Publication number
- CN221308631U CN221308631U CN202322539184.6U CN202322539184U CN221308631U CN 221308631 U CN221308631 U CN 221308631U CN 202322539184 U CN202322539184 U CN 202322539184U CN 221308631 U CN221308631 U CN 221308631U
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- backrest
- piston rod
- seat
- angle
- stepless adjustable
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- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model provides a stepless adjustable backrest device, comprising: a seat, a backrest, and an angle adjustment assembly; the angle adjusting component is used for adjusting the angle of the backrest relative to the seat, the angle adjusting component comprises a self-locking gas spring and a control mechanism, the self-locking gas spring comprises a body, a piston rod arranged on the body and a gas valve top core arranged on the piston rod, the gas valve top core is used for controlling the piston rod to stretch out and draw back, the body is in running fit with the seat, the piston rod is in running fit with the backrest, and the control mechanism is connected with the gas valve top core. The stepless adjustable backrest device can be used for stepless adjustment of the angle of the backrest, the operating handles on the two sides are clamped, the brake cable is pulled through the operating handles, so that the rotating piece is driven to press down the air valve top core, then the angle of the backrest can be adjusted downwards, the operating handles can be loosened at any angle to be fixed freely, and the stepless adjustable backrest device is simple in structure and convenient to operate.
Description
Technical Field
The utility model relates to the technical field of medical rehabilitation instruments, in particular to a backrest device capable of being adjusted steplessly.
Background
The chair can be divided into two types of two-purpose, sponge type, cover plate type, sofa type and the like, is suitable for the elderly with weak body or patients with inconvenient movement, and is used as life assistance. The stool is a stock article for home and hospitalized patients.
The backrest adjusting mode of the conventional toilet chair usually adopts single-stage fixed adjustment, namely, after one-stage adjustment, the second-stage adjustment is carried out, so that the effect of backrest angle is achieved, the operation steps are relatively complicated, and each stage is fixed at a corresponding angle, so that the customer experience is influenced.
Disclosure of utility model
The utility model aims to overcome the defects and shortcomings in the prior art and provides a backrest device capable of being adjusted steplessly.
One embodiment of the present utility model provides a stepless adjustable back rest device comprising: a seat, a backrest, and an angle adjustment assembly;
The backrest is arranged on one side of the seat and is in rotating fit with the seat;
The angle adjusting component is used for adjusting the angle of the backrest relative to the seat, the angle adjusting component comprises a self-locking gas spring and a control mechanism, the self-locking gas spring comprises a body, a piston rod arranged on the body and a gas valve top core arranged on the piston rod, the gas valve top core is used for controlling the piston rod to stretch out and draw back, the body is in running fit with the seat, the piston rod is in running fit with the backrest, and the control mechanism is arranged on the backrest and is connected with the gas valve top core.
In some alternative embodiments, the infinitely adjustable backrest device comprises two said angle adjustment assemblies, one on each side of the backrest.
In some alternative embodiments, the control mechanism includes a rotating member, an operating handle, a brake cable, and a reset elastic member, where the rotating member is rotatably disposed on the piston rod, the operating handle is in running fit with the backrest and is connected with the rotating member through the brake cable, the reset elastic member is disposed on the piston rod and is connected with the rotating member, and when the operating handle rotates, the rotating member is pulled by the brake cable, so that the rotating member presses the air valve top core.
In some alternative embodiments, the return elastic member is a spring, and the spring is sleeved on the rotating member.
In some optional embodiments, the control mechanism further includes a wire sleeve, the wire sleeve is sleeved on the outer side of the brake cable, and two ends of the wire sleeve respectively abut against the rotating member and the operating handle.
In some alternative embodiments, a cavity is provided in the piston rod, and the valve top core and the rotor are disposed in the cavity.
In some alternative embodiments, the back side of the backrest is provided with a rotating seat, and the end of the piston rod is in rotating fit with the rotating seat.
In some alternative embodiments, the back side of the backrest is provided with push handles.
In some alternative embodiments, the bottom of the seat is provided with a plurality of road wheels.
Compared with the prior art, the stepless backrest adjusting device can be used for carrying out stepless adjustment on the angle of the backrest, the operating handles on the two sides are clamped, the brake cable is pulled by the operating handles so as to drive the rotating piece to press down the air valve top core, then the angle of the backrest can be adjusted downwards, the operating handles can be loosened at any angle to be fixed freely, the operating handles are clamped again so that the air spring can rebound the backrest to the maximum angle, then the angle can be readjusted, and the stepless backrest adjusting device is simple in structure and convenient to operate.
In order that the utility model may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the structure of a stepless adjustable backrest device according to one embodiment of the utility model;
FIG. 2 is a partial cross-sectional view of an infinitely adjustable backrest device according to one embodiment of the present utility model;
fig. 3 is an enlarged view at a shown in fig. 2.
Reference numerals illustrate:
10. A seat; 11. a walking wheel; 20. a backrest; 21. a rotating seat; 22. pushing the handle; 30. an angle adjustment assembly; 31. a self-locking gas spring; 311. a body; 312. a piston rod; 313. a valve core; 314. a cavity; 32. a control mechanism; 321. a rotating member; 322. an operation handle; 343. a brake cable; 344. a return elastic member; 345. a wire sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" means at least two, such as two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more than one.
Referring to fig. 1, a schematic structural diagram of a stepless adjustable backrest device according to an embodiment of the utility model includes: a seat 10, a backrest 20 and two angle adjustment assemblies 30.
The seat 10 may be used to mount a toilet, with the back rest 20 disposed on one side of the seat 10 and in a rotational fit with the seat 10.
Referring to fig. 2 and 3, fig. 2 is a partial cross-sectional view of a stepless adjustable backrest device according to an embodiment of the present utility model, fig. 3 is an enlarged view of a portion a shown in fig. 2, two angle adjusting assemblies 30 are respectively disposed at two sides of the backrest 20, the angle adjusting assemblies 30 are used for adjusting an angle of the backrest 20 relative to the seat 10, the angle adjusting assemblies 30 include a self-locking gas spring 31 and a control mechanism 32, the self-locking gas spring 31 includes a body 311, a piston rod 312 disposed on the body 311, and a valve top 313 disposed on the piston rod 312, the valve top 313 is used for controlling the piston rod 312 to stretch, the body 311 is in rotational fit with the seat 10, the piston rod 312 is in rotational fit with the backrest 20, and the control mechanism 32 is disposed on the backrest 20 and connected with the valve top 313.
The electrodeless adjustable backrest device comprises an angle adjustment assembly 30, the two angle adjustment assemblies 30 being arranged on both sides of the backrest 20, respectively.
The control mechanism 32 comprises a rotating member 321, an operating handle 322, a brake cable 343 and a reset elastic member 344, wherein the rotating member 321 is rotatably arranged on the piston rod 312, the operating handle 322 is in rotating fit with the backrest 20 and is connected with the rotating member 321 through the brake cable 343, the reset elastic member 344 is arranged on the piston rod 312 and is connected with the rotating member 321, and the rotating member 321 is pulled through the brake cable 343 when the operating handle 322 rotates, so that the rotating member 321 presses the air valve top core 313. Of course, other suitable structures may be used for the control mechanism 32, and this is not a limitation.
When the angle is adjusted, the operating handles 322 on two sides are clamped to rotate the operating handles 322, the brake cable 343 is pulled through the operating handles 322 to drive the rotating piece 321 to press down the air valve top core 313, then the angle of the backrest 20 can be adjusted downwards, the operating handles 322 can be loosened at any angle to be fixed freely, the operating handles 322 are clamped again, the air spring can rebound the backrest 20 to the maximum angle, then the angle can be adjusted again, and the angle adjusting device is simple in structure and convenient to operate.
The structure of the self-locking air spring 31 can be designed according to actual needs, in this embodiment, the air valve top core 313 is retracted into the self-locking air spring 31, so that the air passage in the body 311 is opened, at this time, the backrest 20 is pressed down to apply a certain external force to the piston rod 312 of the self-locking air spring 31, so that the extension or shortening of the piston rod 312 can be achieved, if the sum of the applied external force and the load is greater than the thrust provided by the air pressure in the body 311, the piston rod 312 of the self-locking air spring 31 is retracted, so that the backrest 20 rotates downward relative to the seat 10, if the sum of the applied external force and the load is less than the thrust provided by the air pressure in the body 311, the piston rod 312 of the self-locking air spring 31 is extended, so that the backrest 20 rotates upward relative to the seat 10, and once the button is released, the air valve top core 313 is automatically reset, so that the air passage in the self-locking air spring 31 is closed, at this time, the piston rod 312 of the self-locking air spring 31 stops extending and remains fixed, so that self-locking is achieved, and the backrest 20 can be fixed at any position within the range of travel. Of course, the structure and principle of the self-locking gas spring 31 are known to those skilled in the art, and are not limited to this example.
In some alternative embodiments, the return spring 344 is a spring that is sleeved on the rotating member 321, so as to facilitate fixing the return spring 344.
In some alternative embodiments, the control mechanism 32 further includes a wire sleeve 345, where the wire sleeve 345 is sleeved on the outer side of the brake wire 343, and two ends of the wire sleeve are respectively abutted against the rotating member 321 and the operating handle 322, so as to facilitate protecting the brake wire 343.
In some alternative embodiments, the piston rod 312 is provided with a cavity 314, and the valve top 313 and the rotator 321 are disposed within the cavity 314, thereby facilitating production assembly.
In some alternative embodiments, the back side of the backrest 20 is provided with a rotating seat 21, and the end of the piston rod 312 is in a rotating fit with the rotating seat 21, thereby facilitating the installation of the piston rod 312.
In some alternative embodiments, the back side of the backrest 20 is provided with push handles 22, facilitating the user to push the seat 10 by pulling the backrest 20 by the push handles 22.
In some alternative embodiments, the bottom of the seat 10 is provided with a plurality of road wheels 11 to facilitate movement of the seat 10.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A stepless adjustable backrest device, comprising: a seat, a backrest, and an angle adjustment assembly;
The backrest is arranged on one side of the seat and is in rotating fit with the seat;
The angle adjusting component is used for adjusting the angle of the backrest relative to the seat, the angle adjusting component comprises a self-locking gas spring and a control mechanism, the self-locking gas spring comprises a body, a piston rod arranged on the body and a gas valve top core arranged on the piston rod, the gas valve top core is used for controlling the piston rod to stretch out and draw back, the body is in running fit with the seat, the piston rod is in running fit with the backrest, and the control mechanism is arranged on the backrest and is connected with the gas valve top core.
2. A stepless adjustable backrest device according to claim 1, comprising two angle adjusting assemblies, which are respectively arranged on two sides of the backrest.
3. A stepless adjustable back rest device according to claim 1, characterized in that: the control mechanism comprises a rotating piece, an operating handle, a brake cable and a reset elastic piece, wherein the rotating piece is rotatably arranged on the piston rod, the operating handle is in rotary fit with the backrest and is connected with the rotating piece through the brake cable, the reset elastic piece is arranged on the piston rod and is connected with the rotating piece, and when the operating handle rotates, the rotating piece is pulled through the brake cable, so that the rotating piece presses the air valve top core.
4. A stepless adjustable backrest device according to claim 3, characterized in that: the reset elastic piece is a spring, and the spring is sleeved on the rotating piece.
5. A stepless adjustable backrest device according to claim 3, characterized in that: the control mechanism further comprises a wire sleeve, the wire sleeve is sleeved on the outer side of the brake cable, and two ends of the wire sleeve are respectively abutted against the rotating piece and the operating handle.
6. A stepless adjustable backrest device according to claim 3, characterized in that: the piston rod is provided with a cavity, and the air valve top core and the rotating piece are arranged in the cavity.
7. A stepless adjustable back rest device according to any one of claims 1 to 5, characterized in that: the back of the backrest is provided with a rotating seat, and the end part of the piston rod is in rotating fit with the rotating seat.
8. A stepless adjustable back rest device according to any one of claims 1 to 5, characterized in that: the back side of the backrest is provided with a plurality of pushing handles.
9. A stepless adjustable back rest device according to any one of claims 1 to 5, characterized in that: the bottom of the seat is provided with a plurality of travelling wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322539184.6U CN221308631U (en) | 2023-09-19 | 2023-09-19 | Backrest device capable of being adjusted steplessly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322539184.6U CN221308631U (en) | 2023-09-19 | 2023-09-19 | Backrest device capable of being adjusted steplessly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221308631U true CN221308631U (en) | 2024-07-12 |
Family
ID=91786448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322539184.6U Active CN221308631U (en) | 2023-09-19 | 2023-09-19 | Backrest device capable of being adjusted steplessly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221308631U (en) |
-
2023
- 2023-09-19 CN CN202322539184.6U patent/CN221308631U/en active Active
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