CN215382607U - Chair with adjustable backrest angle - Google Patents
Chair with adjustable backrest angle Download PDFInfo
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- CN215382607U CN215382607U CN202120972107.8U CN202120972107U CN215382607U CN 215382607 U CN215382607 U CN 215382607U CN 202120972107 U CN202120972107 U CN 202120972107U CN 215382607 U CN215382607 U CN 215382607U
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- backrest
- adjusting
- steel cable
- angle
- slide block
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Abstract
The utility model relates to a chair with an adjustable backrest angle, which comprises a seat cushion, a backrest and a backrest angle adjusting mechanism for adjusting the backward rotation angle of the backrest, wherein the angle adjusting mechanism comprises an adjusting handle, a limiting slide block, an adjusting base, a pneumatic rod and a steel cable, and the angle adjusting mechanism comprises: the limiting slide block is connected to the backrest in a sliding manner, and one side far away from the seat cushion is abutted against the bottom of the backrest; the air pressure rod is connected with the seat cushion in a sliding way, the output end of the air pressure rod is rotationally connected with the limiting slide block, and the input end of the air pressure rod is provided with a switch valve; the steel cable is movably connected to the adjusting plate, one end of the steel cable is fixedly connected with the switch valve, and the other end of the steel cable is fixedly connected with the adjusting handle; when the user stirs adjustment handle outwards, adjustment handle pulling steel cable, the steel pulling cable other end pulls open the ooff valve of atmospheric pressure stick for the atmospheric pressure stick can be concertina movement, and the user uses hand or back control to lean on and turn back forward or rotate backward this moment, adjusts back pivoted angle with this, and this application has advantages such as stability is good, long service life.
Description
Technical Field
The present invention relates to a seat, and more particularly, to a seat with an adjustable backrest angle.
Background
In the prior art, in the use process of the chair, in order to meet different requirements, the angle between the chair back and the chair seat can be properly adjusted, but the angle adjustment of the chair back has the problems of high speed, impact, vibration and the like, the use of a user is seriously influenced, and the service life of the chair is shortened.
Therefore, a technical means for solving the technical defect needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model is realized in such a way that the backrest angle adjustable seat comprises a seat cushion and a backrest, wherein the backrest is rotationally connected to one side of the seat cushion, the bottom of the seat cushion is provided with an adjusting base, and the adjusting base is provided with a backrest angle adjusting mechanism for adjusting the backward rotation angle of the backrest, so that the rotation angle can be adjusted when the backrest rotates backwards; angle adjustment mechanism includes adjustment handle, spacing slider, adjusts base, atmospheric pressure stick, steel cable, wherein:
the adjusting base comprises an adjusting plate arranged at the bottom of the seat cushion and a supporting plate extending upwards along one side of the adjusting plate;
one end of the adjusting handle is rotatably connected to the adjusting plate, the other end of the adjusting handle is a free end, and the free end extends out of the seat cushion to form a handle for a user to apply force;
the limiting slide block is connected to the supporting plate in a sliding mode, a rotating shaft is fixedly connected to one side, close to the adjusting plate, of the limiting slide block, and one side, far away from the adjusting plate, of the limiting slide block is abutted to the bottom of the backrest;
the cylinder body of the air pressure rod is rotationally connected with the rotating shaft; a piston rod of the air pressure rod is fixedly connected to the adjusting plate, a switch valve is arranged on the piston rod, and the air pressure rod is opened or closed through the control of the switch valve;
the steel cable is movably connected to the adjusting plate, one end of the steel cable is fixedly connected with the switch valve, and the other end of the steel cable is fixedly connected with the adjusting handle;
when the adjusting handle is used, the adjusting handle is pulled outwards to pull the steel cable to open the switch valve, so that a piston rod of the air pressure rod can do telescopic motion, and the limiting slide block is pushed to move upwards and downwards along the supporting plate.
More specifically, the rotatable angle of the backrest is a, and a is more than or equal to 0 degrees and less than or equal to 120 degrees.
More specifically, the steel cable includes protective sheath, steel wire core, the protective sheath is established the surface of steel wire core, steel wire core sliding connection be in the protective sheath.
More specifically, a sliding column is arranged on the limiting sliding block, and a sliding groove is formed in the supporting plate at a position corresponding to the sliding column; the sliding column extends into the sliding groove and is connected with the sliding groove in a sliding mode.
More specifically, still be equipped with an elastic buffer in the spout, elastic buffer one end with spout fixed connection, the other end with spacing slider is close to one side looks butt of seatpad.
The beneficial effects involved in the utility model are as follows:
this application uses pneumatic rod drive limit slide to remove, limit slide can adjust the distance that removes wantonly in the piston rod stroke range of pneumatic rod, satisfy user's demand more easily, the user releases adjustment handle in the stroke range of pneumatic rod optional position, make the ooff valve close, can make pneumatic rod length fix in a certain position, accomplish the adjustment of back angle, the comfort level is higher, and pneumatic rod promotes process speed steady, it realizes the shock attenuation to limit slide to combine elastic buffer spare again, it is very fast to have speed when avoiding the adjustment of the back of the chair, and the accompanying is strikeed, the vibration scheduling problem appears.
Drawings
Fig. 1 is a schematic view of the overall structure of a chair with an adjustable backrest angle according to the present invention.
Fig. 2 is another angle structure diagram of the chair with adjustable backrest angle according to the utility model.
Fig. 3 is an exploded view of a seat with a backrest angle adjustable according to the present invention, with the seat cushion removed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "fixedly attached" to another element. It can be welded or bonded together.
Referring to fig. 1, and with reference to fig. 2 and 3, a preferred embodiment of the present invention is provided, in which the disclosed embodiment of the present invention is implemented, and the chair includes a seat cushion 1 and a backrest 2, the backrest 2 is rotatably connected to one side of the seat cushion 1, an adjusting base 3 is installed at the bottom of the seat cushion 1, and an angle adjusting mechanism 4 for adjusting a backward rotation angle of the backrest 2 is installed on the adjusting base 3, so that when the backrest 2 rotates backward, the rotation angle can be adjusted; the angle adjusting mechanism comprises an adjusting handle 44, a limiting slide block 41, a pneumatic rod 42 and a steel inhaul cable 43, wherein:
the adjusting base 3 includes an adjusting plate 31 installed at the bottom of the seat cushion 1, and a supporting plate 32 extending upward along one side of the adjusting plate 31;
one end of the adjusting handle 44 is rotatably connected to the adjusting plate 31, the other end is a free end 45, and the free end 45 extends out of the seat cushion 1 to form a handle for a user to apply force;
the limiting slide block 41 is connected to the support plate 32 in a sliding manner, a rotating shaft is fixedly connected to one side of the limiting slide block close to the adjusting plate 31, and one side of the limiting slide block far away from the adjusting plate 31 is abutted to the bottom of the backrest 2;
the cylinder body of the air pressure rod 42 is rotationally connected with the rotating shaft; a piston rod 46 of the air pressure rod 42 is fixedly connected to the adjusting plate 31, a switch valve 5 is arranged on the piston rod 46, and the air pressure rod 42 is controlled to be opened or closed through the switch valve 5; when the switch valve 5 is opened, the piston rod 46 of the air pressure rod 42 can do telescopic motion along the cylinder body; when the on-off valve 5 is closed, the piston rod 46 of the pneumatic rod 42 is fixed and cannot move telescopically.
The steel cable 43 is movably connected on the adjusting plate 31, one end of the steel cable is fixedly connected with the switch valve 5, and the other end of the steel cable is fixedly connected with the adjusting handle 44;
when the device is used, the adjusting handle 44 is pulled outwards to pull the steel cable 43 to open the switch valve 5, so that the piston rod 46 of the pneumatic rod 42 can make telescopic motion, and the limiting slide block 41 is pushed to move upwards and downwards along the support plate 32.
More specifically, the rotatable angle of the backrest 2 is a, and a is more than or equal to 0 degrees and less than or equal to 120 degrees.
More specifically, the steel cable 43 comprises a protective sleeve 403 and a steel wire core 402, wherein the protective sleeve 403 is sleeved on the outer surface of the steel wire core 402, and the steel wire core 402 is slidably connected in the protective sleeve 403.
More specifically, the limiting slide block 41 is provided with a sliding column 401, and a sliding groove 33 is formed in the supporting plate 32 at a position corresponding to the sliding column 401; the sliding column 401 extends into the sliding slot 33 and is slidably connected with the sliding slot 33.
More specifically, an elastic buffer (not shown) is further disposed in the sliding slot 33, one end of the elastic buffer (not shown) is fixedly connected to the sliding slot 33, and the other end of the elastic buffer abuts against one side of the limiting slider 41 close to the seat cushion 1.
The working principle of the application is as follows:
when the backrest 22 and the seat cushion 1 are folded, the included angle a is 0 °, and at this time, the backrest 22 and the limiting slide block 41 are separated from each other;
when the backrest 22 is in an open state, the included angle a is 100 °, and at this time, the bottom of the backrest 22 abuts against the top of the limiting slider 41 to limit the backrest 22 to rotate backwards; when the user adjusts the angle of the backrest 2, only the adjusting handle 44 needs to be pulled outwards, the adjusting handle 44 pulls the steel cable 43, the other end of the steel cable 43 pulls the switch valve 5 of the air pressure rod 42 to be pulled open, so that the piston rod 46 of the air pressure rod 42 can make telescopic motion, at this time, the user controls the backrest to be folded forwards or rotated backwards by hand or back, if the backrest is rotated backwards continuously (i.e. the backrest is rotated towards direction B shown in fig. 1), the backrest 2 can push the limiting slide block 41 to move downwards, the piston rod 46 of the air pressure rod 42 makes contraction motion to drive the air cylinder to move, the air cylinder drives the limiting slide block 41 to move downwards, until the backrest rotates to a specified angle, the adjusting handle 44 is released, the switch valve 5 is closed, the piston rod 46 of the air pressure rod 42 stops moving, the limiting slide block 41 is fixed to be unable to move continuously, and because the backrest 2 is abutted against the limiting slide block 41, so that the backrest 2 can not be rotated rightwards, and the adjustment of the rotation angle of the backrest 2 can be completed.
Although it should be noted that, in the present application, when a is greater than or equal to 100 degrees and less than or equal to 120 degrees, the backrest 2 can be adjusted at will, and the angle adjustment of the backrest 2 can be realized only by pulling the steel cable 43 to open or close the switch valve 5 of the pneumatic rod through the adjusting handle 44.
This application uses pneumatic rod 42 to drive spacing slider 41 and removes, spacing slider 41 can adjust the distance that removes wantonly in the piston rod 46 stroke range of pneumatic rod 42, satisfy user's demand more easily, the user releases adjustment handle 44 in the stroke range of pneumatic rod 42 optional position, make ooff valve 5 close, can make pneumatic rod 42 length fix in a certain position, accomplish the adjustment of back 2 angle, the comfort level is higher, and pneumatic rod 42 promotes process speed steadily, it realizes the shock attenuation to spacing slider 41 to combine elastic buffer spare (not shown in the figure) again, it is very fast to have the speed when avoiding the adjustment of the back of the chair, and the problem that accompanies the impact, the vibration appears.
The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A chair with an adjustable backrest angle comprises a seat cushion and a backrest, wherein the backrest is rotatably connected to one side of the seat cushion; angle adjustment mechanism includes adjustment handle, spacing slider, adjusts base, atmospheric pressure stick, steel cable, wherein:
the adjusting base comprises an adjusting plate arranged at the bottom of the seat cushion and a supporting plate extending upwards along one side of the adjusting plate;
one end of the adjusting handle is rotatably connected to the adjusting plate, the other end of the adjusting handle is a free end, and the free end extends out of the seat cushion to form a handle for a user to apply force;
the limiting slide block is connected to the supporting plate in a sliding mode, a rotating shaft is fixedly connected to one side, close to the adjusting plate, of the limiting slide block, and one side, far away from the adjusting plate, of the limiting slide block is abutted to the bottom of the backrest;
the cylinder body of the air pressure rod is rotationally connected with the rotating shaft; a piston rod of the air pressure rod is fixedly connected to the adjusting plate, a switch valve is arranged on the piston rod, and the air pressure rod is opened or closed through the control of the switch valve;
the steel cable is movably connected to the adjusting plate, one end of the steel cable is fixedly connected with the switch valve, and the other end of the steel cable is fixedly connected with the adjusting handle;
when the adjusting handle is used, the adjusting handle is pulled outwards to pull the steel cable to open the switch valve, so that a piston rod of the air pressure rod can do telescopic motion, and the limiting slide block is pushed to move upwards and downwards along the supporting plate.
2. A chair with adjustable backrest angle, as claimed in claim 1, wherein the backrest can be rotated through an angle a of 0 ° ≦ a ≦ 120 °.
3. The chair with the adjustable backrest angle as claimed in claim 1, wherein the steel cable comprises a protective sleeve and a steel wire core, the protective sleeve is sleeved on the outer surface of the steel wire core, and the steel wire core is slidably connected in the protective sleeve.
4. The chair with the adjustable backrest angle according to claim 3, wherein the limiting slide block is provided with a slide column, and the support plate is provided with a slide groove at a position corresponding to the slide column; the sliding column extends into the sliding groove and is in sliding connection with the sliding groove;
5. the chair with the adjustable backrest angle as claimed in claim 4, wherein an elastic buffer member is further disposed in the sliding groove, one end of the elastic buffer member is fixedly connected with the sliding groove, and the other end of the elastic buffer member abuts against one side of the limiting slider close to the seat cushion.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972107.8U CN215382607U (en) | 2021-05-08 | 2021-05-08 | Chair with adjustable backrest angle |
| PCT/CN2022/079676 WO2022188765A1 (en) | 2021-03-09 | 2022-03-08 | Seat backrest angle adjustment mechanism |
| US17/654,165 US20220289081A1 (en) | 2021-03-09 | 2022-03-09 | Backrest adjusting mechanism and a seat with the same |
| US18/301,533 US20230249592A1 (en) | 2021-03-09 | 2023-04-17 | Backrest adjusting mechanism and a seat with the same |
| US18/581,886 US20240190309A1 (en) | 2021-03-09 | 2024-02-20 | Backrest adjusting mechanism and a seat with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972107.8U CN215382607U (en) | 2021-05-08 | 2021-05-08 | Chair with adjustable backrest angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215382607U true CN215382607U (en) | 2022-01-04 |
Family
ID=79674455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120972107.8U Active CN215382607U (en) | 2021-03-09 | 2021-05-08 | Chair with adjustable backrest angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215382607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022188765A1 (en) * | 2021-03-09 | 2022-09-15 | 东莞市全乐电动科技有限公司 | Seat backrest angle adjustment mechanism |
-
2021
- 2021-05-08 CN CN202120972107.8U patent/CN215382607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022188765A1 (en) * | 2021-03-09 | 2022-09-15 | 东莞市全乐电动科技有限公司 | Seat backrest angle adjustment mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Building 1, No. 8 Quling Middle Road, Liaobu Town, Dongguan City, Guangdong Province, 523000 Patentee after: QUALITY LIFE TECHNOLOGIES Co.,Ltd. Address before: Room 101, building 1, No.3 laofuwu Road, Dongkeng Town, Dongguan City, Guangdong Province, 523000 Patentee before: QUALITY LIFE TECHNOLOGIES Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |