CN211092821U - Chair with detachable seat - Google Patents
Chair with detachable seat Download PDFInfo
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- CN211092821U CN211092821U CN201922046079.2U CN201922046079U CN211092821U CN 211092821 U CN211092821 U CN 211092821U CN 201922046079 U CN201922046079 U CN 201922046079U CN 211092821 U CN211092821 U CN 211092821U
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- seat
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- lever
- plate
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- 238000006243 chemical reaction Methods 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 210000002414 leg Anatomy 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model discloses a chair, which comprises a front connecting rod, a rear connecting rod, a base and a seat board, wherein the front connecting rod and the rear connecting rod form a four-bar mechanism; the chair comprises a back support and a chair back, wherein the chair back comprises a back plate and a waist support plate, and the back of the waist support plate is provided with the waist support; the lower end of the lever is connected with a guide pin which is inserted in the guide groove, and the upper end of the lever is connected with the waist support through a sliding mechanism; when the chair is switched from the idle position to the sitting position, the guide pin slides from one end of the guide groove to the other end, and the upper end of the lever pushes the waist support plate to move forwards to prop against the waist through the sliding mechanism. Compared with the prior art, the utility model discloses a seat simple structure does benefit to the implementation, even if still ideal to the less user of weight effect.
Description
Technical Field
The utility model relates to a thing to sit on field, in particular to seat.
Background
When a person sits down, the waist of the person sitting backwards is generally required to be close to the backrest, and the waist of the person sitting forwards is not close to the seat, so that the waist cannot be supported; generally, people support the waist by putting a back cushion in front of the seat back, which is not convenient enough and troublesome to carry, although it can play a certain role.
Chinese invention patent CN100556339 discloses a chair, which drives the backrest to move forward by compressing the hydraulic cylinder, although the backrest in the patent is close to horizontal movement, the structure is complex and is not easy to implement; in addition, when the weight is small or the pressure on the air cylinder is small, the backrest is difficult to move forwards, and the effect is unstable; and the hydraulic pressure in the hydraulic cylinder generally adopts oil, and fire behavior is relatively poor, has the potential safety hazard.
Disclosure of Invention
The utility model overcomes exist not enough among the above-mentioned prior art, a seat is provided, four-bar linkage is constituteed through preceding, back connecting rod to the bedplate and the base of seat, the back support keeps relatively fixed with bedplate, seat frame, when the bedplate atress pushes down the downstream while moving forward, act on lever mechanism when the bedplate removes for the lever lower extreme removes along the guide slot, and lever self revolutes the axle again and takes place the rotation, thereby make the lever upper end rotate forward and advance in order to promote the waist and support the fagging, thereby can push up human waist fast when the human body is sat, reach the purpose that supports the waist.
The technical scheme of the utility model is realized like this:
a seat, comprising:
a base configured to connect to a seat support assembly;
the seat frame is used for configuring and connecting the seat plate, and the seat frame and the seat plate are arranged above the base;
the two ends of the front connecting rod are respectively hinged with the front end of the seat plate and the front end of the base, and the two ends of the rear connecting rod are respectively hinged with the rear end of the seat plate and the rear end of the base; the front and rear connecting rods, the base and the seat plate form a four-bar linkage mechanism, and the seat plate can move relative to the base under the supporting and guiding action of the front and rear connecting rods and can perform state conversion between an idle position and a sitting position; in the no-load position, the seat frame is upward far away from the base, and a larger elevation angle is formed between the front connecting rod and the base and between the rear connecting rod and the base; in the sitting position, the seat frame is downward close to the base, and a smaller elevation angle is formed between the front connecting rod and the base and between the rear connecting rod and the base;
the back bracket extends upwards from the rear end of the seat frame;
the chair comprises a chair back, the upper end of the chair back is rotatably connected with the upper end of a back support, the chair back comprises a back plate at an upper position and a waist support plate at a lower position, and a waist support is fixedly arranged on the back of the waist support plate;
the lever mechanism comprises a lever and a guide groove, the guide groove is arranged on the base, the lower part of the lever is rotatably connected with the lower part of the back bracket through a rotating shaft, the lower end of the lever is connected with a guide pin, the guide pin is inserted into the guide groove, and the upper end of the lever is connected with the waist bracket through a sliding mechanism; when the waist support plate is switched from the idle position to the sitting position, the guide pin slides from one end of the guide groove to the other end, the lever rotates along the rotating shaft, and the upper end of the lever pushes the waist support plate to move forwards to prop the waist through the sliding mechanism.
The utility model discloses a seat, bedplate and base pass through preceding, four-bar linkage is constituteed to the back connecting rod, back support and bedplate, seat frame keep relatively fixed, move forward when the bedplate atress pushes down the downstream, act on lever mechanism when the bedplate moves for the lever lower extreme removes along the guide way, and lever self revolutes the axle again and takes place rotatoryly, thereby make the lever upper end rotate forward in order to promote the waist and support the fagging, thereby can push up human waist fast when the human body is sat, reach the purpose of supporting the waist.
Preferably, the sliding mechanism comprises a sliding groove and a sliding pin, the sliding groove is vertically arranged on the waist support, the sliding pin is arranged at the upper end of the lever, and the sliding pin is inserted into the sliding groove. By adopting the mode, the waist supporting plate can ensure the horizontal pushing and the forward movement as much as possible, and the sitting comfort is improved.
Preferably, when the seat pan is shifted from the idling position to the sitting position, the seat pan is moved in the horizontal direction while being lowered relative to the base.
Preferably, the two back supports are symmetrically arranged, a cross rod is arranged at the upper ends of the two back supports, and the upper end of the back plate is rotatably connected with the cross rod; the two levers are also symmetrically arranged, and each lever is rotatably connected with the back bracket through a rotating shaft. Therefore, the connection stability can be improved, the arrangement is more convenient, and the force application is more reasonable.
Preferably, the bottom surface of the seat board is fixedly provided with a bracket which is respectively hinged with the front connecting rod and the rear connecting rod. The bracket is made of metal, which makes the hinging easier.
Preferably, the back plate and the waist support plate are integrally formed, and the back support and the seat frame are integrally formed.
Preferably, the seat board is provided with an elastic reset device for assisting the seat board to move from the sitting position to the idle position.
Preferably, the elastic resetting device is a pressure spring, one end of the pressure spring is constrained on the base, and the other end of the pressure spring is constrained on the seat plate.
Preferably, the two ends of the pressure spring are respectively sleeved with a first guide sleeve and a second guide sleeve, the front connecting rod and the rear connecting rod are symmetrically arranged, the rear connecting rod is hinged with the seat plate through a first support shaft, the lower end of the front connecting rod is hinged with the base through a second support shaft, the first guide sleeve is rotatably connected with the first support shaft, and the second guide sleeve is rotatably connected with the second support shaft.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
the utility model discloses a seat, four-bar linkage is constituteed through preceding, back connecting rod to the bedplate of seat and base, and back support and bedplate, seat frame keep relatively fixed, and move forward when the bedplate atress pushes down the downstream, act on lever mechanism when the bedplate moves for the lever lower extreme removes along the guide slot, and lever self revolutes the axle again and takes place rotatoryly, thereby makes the lever upper end rotate forward in order to promote the waist and support the board and move forward, thereby can push up human waist fast when the human body is sat, reach the purpose that supports the waist.
Compared with the prior art, the chair of the utility model has simple structure and is beneficial to implementation; in addition, due to the design of the four-bar linkage mechanism, the effect is still ideal even for users with small weight, and the safety performance is high.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention showing a chair seat in an unloaded position;
FIG. 2 is a schematic perspective view of the seat in the sitting position according to the embodiment of the present invention;
FIG. 3 is a side view of a portion of the seat in an unloaded position in accordance with an embodiment of the present invention;
FIG. 4 is a side view of the seat in an embodiment of the present invention, partially in its configuration, as it transitions from the unloaded position to the sitting position;
FIG. 5 is a side view of a portion of the seat in the seating position of the present invention;
FIG. 6 is a partial perspective view of the chair seat in an unloaded position according to an embodiment of the present invention;
fig. 7 is a schematic partial perspective view of the present invention in an embodiment when switching from the unloaded position to the sitting position;
FIG. 8 is a partial perspective view of the seat in the sitting position of the present invention;
fig. 9 is a side view of the chair seat of the present invention with its internal structure disassembled.
The figures are numbered: a base 1; a lifting air rod 2; supporting legs 3; a roller 4; a seat plate 5; a seat frame 6; a bracket 7; a front link 8; a rear link 9; a first support shaft 10; a second support shaft 11; a third support shaft 12; a fourth support shaft 13; a back support 14; a cross bar 15; a seat back 16; a back plate 17; a waist support plate 18; a waist support 19; a lever 20; a guide groove 21; a rotating shaft 22; a guide pin 23; a slide groove 24; a slide pin 25; a pressure spring 26; a first guide sleeve 27; a second guide sleeve 28.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The term "front end" refers to: when the chair is seated, one end close to the knee of the human body; the term "back end" refers to: when the chair is seated, the chair is close to one end of the back of the human body.
The specific implementation manner of the utility model is as follows:
example (b): as shown in fig. 1-9, the present invention provides a seat, comprising:
the base 1 is connected with a seat supporting component, the seat supporting component refers to a lifting air rod 2 and a supporting leg 3 which is in plug fit with the lower end of the lifting air rod 2 and is provided with a roller 4 at the bottom.
Preceding, back connecting rod 8, 9, preceding, back connecting rod 8, 9 are two that the symmetry set up, the lower extreme of preceding connecting rod 8 is articulated through the front end of second back shaft 11 with base 1, the upper end of preceding connecting rod 8 is articulated through the front end of third back shaft 12 with bracket 7, the upper end of back connecting rod 9 is articulated through the rear end of first back shaft 10 with bracket 7, the lower extreme of back connecting rod 9 is articulated through the rear end of fourth back shaft 13 with base 1.
Thus, the front and the rear connecting rods 8 and 9, the base 1 and the seat plate 5 form a four-bar linkage mechanism, and the seat plate 5 can move relative to the base 1 under the supporting and guiding action of the front and the rear connecting rods 8 and 9 and can perform state conversion between an idle position and a sitting position; in the idle position, the seat frame 6 is upward far away from the base 1, and a larger elevation angle is formed between the front connecting rod 8 and the base 1 and between the rear connecting rod 9 and the base 1; in the sitting position, the seat frame 6 is located downwardly adjacent the base 1 with a small angle of elevation between the front and rear links 8, 9 and the base 1.
The back support 14 extends upwards from the rear end of the seat frame 6, and the back support 14 and the seat frame 6 are integrally formed. In this embodiment, the two back supports 14 are symmetrically arranged, and a cross bar 15 is arranged at the upper ends of the two back supports 14.
The utility model provides a chair for children, including back of the chair 16, the upper end of back of the chair 16 is connected with back support 14 upper end rotation, and back of the chair 16 is including the backplate 17 that is in the top position and the waist backup pad 18 that is in the below position, backplate 17 upper end is connected with horizontal pole 15 rotation, backplate 17 and waist backup pad 18 are integrated into one piece, the fixed waist support 19 that is equipped with in back of waist backup pad 18.
The lever mechanism comprises two levers 20 and two guide grooves 21, the two levers 20 are symmetrically arranged, the lower part of each lever 20 is rotatably connected with the lower part of the back support 14 through a rotating shaft 22, the guide grooves 21 are arranged on the base 1, the lower end of each lever 20 is connected with a guide pin 23, the guide pins 23 are inserted into the guide grooves 21, and the upper ends of the levers 20 are connected with the waist support 19 through a sliding mechanism; the sliding mechanism comprises a sliding groove 24 and a sliding pin 25, the sliding groove 24 is vertically arranged on the waist support 19, the sliding pin 25 is arranged at the upper end of the lever 20, and the sliding pin 25 is inserted in the sliding groove 24.
As shown in fig. 3-8, when the chair plate 5 is shifted from the idle position to the sitting position, the chair plate 5 moves horizontally while being lowered relative to the base 1, the chair frame 6 moves the back support 14 downward while the chair plate 5 moves, the lower portion of the lever 20 moves by the rotation shaft 22, and the guide pin 23 at the lower end of the lever 20 slides from the upper end of the guide slot 21 to the lower end, and the lever 20 rotates about the rotation shaft 22, so that the slide pin 25 at the upper end of the lever 20 slides from the upper end of the slide slot 24 to the lower end, and at this time, the upper end of the lever 20 pushes the waist support plate 18 to move forward to the waist.
The seat plate device further comprises an elastic resetting device used for assisting the seat plate 5 to move from the sitting position to the no-load position, the elastic resetting device is a pressure spring 26, the lower end of the pressure spring 26 is restrained on the base 1, and the upper end of the pressure spring 26 is restrained on the seat plate 5. Specifically, the upper and lower ends of the pressure spring 26 are respectively sleeved with a first guide sleeve 27 and a second guide sleeve 28, the first guide sleeve 27 is rotatably connected with the first support shaft 10, and the second guide sleeve 28 is rotatably connected with the second support shaft 11.
When a human body sits, the back support 14, the seat plate 5, the seat frame 6 and the bracket 7 are kept relatively fixed, so the seat plate 5, the seat frame 6, the bracket 7 and the back support 14 move downwards together under the action of the human body pressure, the bracket 7 simultaneously drives the upper ends of the front connecting rod 8 and the rear connecting rod 9 which are respectively hinged with the front end and the rear end of the bracket 7 to move forwards and downwards, the first support shaft 10 simultaneously moves downwards and forwards and extrudes the compression spring 26 together with the second support shaft 11, and the compression spring 26 is compressed and deformed; meanwhile, under the action of the four connecting rods, the seat frame 6 and the back bracket 14 move forwards along the horizontal direction while moving downwards; when the back support 14 moves, the lever mechanism is acted simultaneously, so that the lower end of the lever 20 moves along the guide groove 21, and the lever 20 rotates around the rotating shaft 22, so that the upper end of the lever 20 rotates forwards to push the waist support plate 18 to move forwards, and the waist support plate can quickly prop against the waist of a human body when the human body sits on the waist support plate, and the purpose of supporting the waist is achieved; with the seat in the seating position.
After a human body rises from the seat, the pressure spring 26 recovers to deform to generate elastic force, the first supporting shaft 10 is driven to move upwards and backwards, the first supporting shaft 10 simultaneously drives the rear end of the bracket 7 and the upper end of the rear connecting rod 9 to move upwards and backwards, the front connecting rod 8 is linked together, and under the action of the four connecting rods, the back support 14, the seat plate 5 and the seat frame 6 move upwards and backwards together, so that the seat is recovered to be in an idle position.
Claims (9)
1. A seat, characterized by comprising:
a base configured to connect to a seat support assembly;
the seat frame is used for configuring and connecting the seat plate, and the seat frame and the seat plate are arranged above the base;
the two ends of the front connecting rod are respectively hinged with the front end of the seat plate and the front end of the base, and the two ends of the rear connecting rod are respectively hinged with the rear end of the seat plate and the rear end of the base; the front and rear connecting rods, the base and the seat plate form a four-bar linkage mechanism, and the seat plate can move relative to the base under the supporting and guiding action of the front and rear connecting rods and can perform state conversion between an idle position and a sitting position; in the no-load position, the seat frame is upward far away from the base, and a larger elevation angle is formed between the front connecting rod and the base and between the rear connecting rod and the base; in the sitting position, the seat frame is downward close to the base, and a smaller elevation angle is formed between the front connecting rod and the base and between the rear connecting rod and the base;
the back bracket extends upwards from the rear end of the seat frame;
the chair comprises a chair back, the upper end of the chair back is rotatably connected with the upper end of a back support, the chair back comprises a back plate at an upper position and a waist support plate at a lower position, and a waist support is fixedly arranged on the back of the waist support plate;
the lever mechanism comprises a lever and a guide groove, the guide groove is arranged on the base, the lower part of the lever is rotatably connected with the lower part of the back bracket through a rotating shaft, the lower end of the lever is connected with a guide pin, the guide pin is inserted into the guide groove, and the upper end of the lever is connected with the waist bracket through a sliding mechanism; when the waist support plate is switched from the idle position to the sitting position, the guide pin slides from one end of the guide groove to the other end, the lever rotates along the rotating shaft, and the upper end of the lever pushes the waist support plate to move forwards to prop the waist through the sliding mechanism.
2. The seat according to claim 1, wherein: the sliding mechanism comprises a sliding groove and a sliding pin, the sliding groove is vertically arranged on the waist support, the sliding pin is arranged at the upper end of the lever, and the sliding pin is inserted into the sliding groove.
3. The seat according to claim 1, wherein: when the seat plate is shifted from the idling position to the sitting position, the seat plate is moved in the horizontal direction while being lowered relative to the base.
4. The seat according to claim 1, wherein: the two back supports are symmetrically arranged, a cross rod is arranged at the upper ends of the two back supports, and the upper end of the back plate is rotatably connected with the cross rod; the two levers are also symmetrically arranged, and each lever is rotatably connected with the back bracket through a rotating shaft.
5. The seat according to claim 1, wherein: the bottom surface of the seat board is fixedly provided with a bracket which is respectively hinged with the front connecting rod and the rear connecting rod.
6. The seat according to claim 1, wherein: the back plate and the waist support plate are integrally formed, and the back support and the seat frame are integrally formed.
7. The seat according to claim 1, wherein: also included is a resilient return means for assisting movement of the seat pan from the seating position to the unloaded position.
8. The seat according to claim 7, wherein: the elastic reset device is a pressure spring, one end of the pressure spring is restrained on the base, and the other end of the pressure spring is restrained on the seat plate.
9. The seat according to claim 8, wherein: the two ends of the pressure spring are respectively sleeved with a first guide sleeve and a second guide sleeve, the front connecting rod and the rear connecting rod are symmetrically arranged, the rear connecting rod is hinged with the seat plate through a first support shaft, the lower end of the front connecting rod is hinged with the base through a second support shaft, the first guide sleeve is rotatably connected with the first support shaft, and the second guide sleeve is rotatably connected with the second support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922046079.2U CN211092821U (en) | 2019-11-21 | 2019-11-21 | Chair with detachable seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922046079.2U CN211092821U (en) | 2019-11-21 | 2019-11-21 | Chair with detachable seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211092821U true CN211092821U (en) | 2020-07-28 |
Family
ID=71713357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922046079.2U Active CN211092821U (en) | 2019-11-21 | 2019-11-21 | Chair with detachable seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211092821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468642A (en) * | 2021-12-24 | 2022-05-13 | 曾嘉凌 | Intelligent office chair |
| GB2632110A (en) * | 2023-07-24 | 2025-01-29 | Accora Ltd | Height adjustment mechanism for a chair |
| WO2025066234A1 (en) * | 2023-09-28 | 2025-04-03 | 安吉舒宜智能家居有限公司 | Stable automatically adjustable chair |
-
2019
- 2019-11-21 CN CN201922046079.2U patent/CN211092821U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468642A (en) * | 2021-12-24 | 2022-05-13 | 曾嘉凌 | Intelligent office chair |
| GB2632110A (en) * | 2023-07-24 | 2025-01-29 | Accora Ltd | Height adjustment mechanism for a chair |
| WO2025066234A1 (en) * | 2023-09-28 | 2025-04-03 | 安吉舒宜智能家居有限公司 | Stable automatically adjustable chair |
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