Lifting chair

Abstract

The utility model discloses a lifting chair which is used for solving the technical problem that an existing lifting chair is inconvenient to adjust. The lifting chair specifically comprises a cushion, an air pressure rod and a supporting seat, the top of the air pressure rod is connected with the cushion, the bottom of the air pressure rod is connected with the supporting seat, and the lifting chair further comprises a lifting triggering assembly and a pedal plate; the pedal plate is located below the supporting seat and is suspended above the ground, a control valve contact is arranged at the bottom of the air pressure rod, the pedal plate is connected with the bottom of the air pressure rod through the lifting trigger assembly, and when the pedal plate is subjected to downward pressure, the control valve contact is closed. The lifting trigger assembly abuts against the control valve contact to trigger the air pressure bar to drive the cushion to ascend and descend.

Description

Technical Field

[0001] This utility model relates to the field of chair design technology, and in particular to a height-adjustable chair. Background Technology

[0002] Chairs are a common type of seating in people's daily lives, and they come in a variety of shapes and sizes. In office settings, height-adjustable chairs are often arranged to meet the needs of users of different heights.

[0003] A typical adjustable chair mainly consists of a seat cushion, a gas spring, and a support base. The gas spring connects the seat cushion and the support base and mainly serves to raise and lower the chair.

[0004] Currently, most height-adjustable chairs have their adjustment lever located under the seat cushion. When a user needs to adjust the seat height, they must manually operate the lever to trigger the control valve of the gas spring, which then adjusts the seat height. During this process, the user needs to lift their body off the seat and reach for the lever, often requiring them to bend over. This inconvenience causes considerable trouble for the user.

[0005] Therefore, finding a technical solution that can solve the above-mentioned technical problems has become an important research topic for those skilled in the art. Utility Model Content

[0006] This utility model discloses a height-adjustable chair to solve the technical problem of inconvenient adjustment of existing height-adjustable chairs.

[0007] The present invention provides a height-adjustable chair, including a seat cushion, a gas spring, and a support base; the top of the gas spring is connected to the seat cushion, the bottom of the gas spring is connected to the support base, and the height-adjustable chair also includes a height-adjusting trigger component and a foot pedal;

[0008] The foot pedal is located below the support base and suspended above the ground. The bottom of the gas spring is provided with a control valve contact. The foot pedal is connected to the bottom of the gas spring through the lifting trigger assembly. When the foot pedal is subjected to downward pressure, the lifting trigger assembly abuts against the control valve contact to trigger the gas spring to drive the seat cushion to rise or fall.

[0009] Optionally, the foot pedal is provided with a groove corresponding to the bottom of the gas spring, and the groove is recessed into the interior of the foot pedal;

[0010] The lifting trigger assembly includes a fixed sleeve, a trigger post, a first annular plate, a second annular plate, and an elastic element;

[0011] The fixing sleeve is connected to the bottom of the pneumatic rod, and the control valve contact extends downward and passes through the bottom of the fixing sleeve;

[0012] The first annular piece is fixedly installed on the foot pedal and located above the groove. The first annular piece is arranged around the fixed sleeve and a first movable gap is reserved between the inner circle of the first annular piece and the outer wall of the fixed sleeve.

[0013] The second annular piece is located below the first annular piece and is fixedly connected to the bottom of the fixing sleeve;

[0014] One end of the elastic element is connected to the bottom of the second annular plate, and the other end of the elastic element is connected to the inner bottom wall of the groove;

[0015] The trigger post is disposed on the inner bottom wall of the groove and passes through the second annular plate and the first annular plate sequentially from the inner bottom wall of the groove upwards. The trigger post and the control valve contact are kept at a preset distance.

[0016] When the foot pedal is subjected to downward pressure, the foot pedal and the first annular plate tilt and float relative to the fixed sleeve so that the trigger post abuts against the control valve contact, thereby triggering the gas spring to drive the seat cushion to rise and fall.

[0017] Optionally, the outer side wall of the fixing sleeve is provided with a plurality of guide grooves extending along the lifting direction of the seat cushion, the plurality of guide grooves being evenly distributed on the outer side wall of the fixing sleeve, and the inner ring of the first annular piece being provided with guide protrusions at positions corresponding to the guide grooves.

[0018] The guide protrusion is located within the guide groove and a second movable gap is reserved between it and the groove wall of the guide groove.

[0019] Optionally, the bottom of the pneumatic rod is provided with a threaded through hole that communicates with its interior, and the top of the fixing sleeve is threadedly connected to the threaded through hole.

[0020] Optionally, a mounting hole is provided in the middle of the support base;

[0021] The fixing sleeve is fixedly inserted into the mounting hole.

[0022] Optionally, the support base has multiple support legs that abut against the ground.

[0023] Optionally, the support leg is provided with omnidirectional casters.

[0024] Optionally, the top surface of the foot pedal is evenly provided with a plurality of foot pedal parts;

[0025] The surface of the foot pedal is provided with anti-slip patterns.

[0026] Optionally, the lifting trigger assembly further includes a first fastener, wherein the first annular piece is fixed to the foot pedal by the first fastener.

[0027] Optionally, the lifting trigger assembly further includes a second fastener, wherein the second annular piece is fixed to the fixing sleeve by the second fastener.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] In this embodiment of the height-adjustable chair, a footrest is designed below the support seat to support the user's feet. This footrest is suspended from the ground and connected to the bottom of the gas spring via a lifting trigger assembly. In this design, when the user needs to adjust the seat height, they do not need to leave the seat; they simply press the footrest to engage the lifting trigger assembly with the control valve contacts, thus activating the gas spring and causing the seat to rise or fall. This design allows the user to easily and conveniently adjust the seat height without leaving the seat or bending over, making it more user-friendly. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A structural schematic diagram of a height-adjustable chair provided by this utility model;

[0032] Figure 2 An exploded view of the structure of a height-adjustable chair provided by this utility model;

[0033] Figure 3 A schematic diagram showing the connection between a partial lifting trigger component and a gas spring in a height-adjustable chair, as provided by this utility model;

[0034] Figure 4 A schematic diagram showing the connection between a partial lifting trigger component and a foot pedal in a height-adjustable chair provided by this utility model;

[0035] Figure 5 A schematic diagram showing the position of the first annular piece and the fixing sleeve of a height-adjustable chair provided by this utility model;

[0036] Figure 6 A structural cross-sectional view of a height-adjustable chair provided by this utility model;

[0037] Figure 7 A cross-sectional view of the structure of a height-adjustable chair when it is not adjusted, as provided by this utility model;

[0038] Figure 8 A cross-sectional view of the structure of a height-adjustable chair after the foot pedal is subjected to pressure, provided by this utility model;

[0039] Illustration: 1. Seat cushion; 2. Gas spring; 201. Control valve contact; 3. Support base; 4. Foot pedal; 401. Height-lifting trigger assembly; 5. Fixing sleeve; 501. Guide groove; 5011. First annular piece; 502. Guide protrusion; 5022. Second annular piece; 503. Elastic element; 504. Trigger post; 505. First fastener; 506. Second fastener; 507. Universal caster; 6. Foot pedal; 7. Detailed Implementation

[0040] This utility model discloses a height-adjustable chair to solve the technical problem of inconvenient adjustment of existing height-adjustable chairs.

[0041] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1 to 8 The present invention provides a height-adjustable chair, including a seat cushion 1, a gas spring 2, and a support base 3; the top of the gas spring 2 is connected to the seat cushion 1, and the bottom of the gas spring 2 is connected to the support base 3. The height-adjustable chair also includes a height-adjusting trigger assembly 5 and a foot pedal 4.

[0043] The foot pedal 4 is located below the support base 3 and suspended above the ground. The bottom of the gas spring 2 is provided with a control valve contact 201. The foot pedal 4 is connected to the bottom of the gas spring 2 through the lifting trigger assembly 5. When the foot pedal 4 is subjected to downward pressure, the lifting trigger assembly 5 abuts against the control valve contact 201 to trigger the gas spring 2 to drive the seat cushion 1 to rise and fall.

[0044] It should be noted that the gas spring 2 in this embodiment is existing technology. Its specific working principle is as follows: by triggering the control valve contact 201, the control valve is opened, and the nitrogen pressure inside the gas spring 2 circulates from the lower end of the piston to the upper end, thus driving the seat cushion 1 to rise. When the control valve is closed, the piston position will remain at the position just adjusted, that is, the seat cushion 1 will maintain the previously set height. Therefore, when it is necessary to adjust the height of the seat cushion 1, the control valve contact 201 can be triggered to open the control valve.

[0045] In this embodiment of the height-adjustable chair, a foot pedal 4 for supporting the user's feet is designed below the support base 3. The foot pedal 4 is suspended above the ground and connected to the bottom of the gas spring 2 via a lifting trigger assembly 5. In this design, when the user needs to adjust the height of the seat cushion 1, the user does not need to leave the seat cushion 1; they only need to press down on any position on the top surface of the foot pedal 4 to cause the lifting trigger assembly 5 to contact the control valve contact 201, thereby triggering the gas spring 2 to operate and causing the seat cushion 1 to rise or fall. Through this design, the user can easily and conveniently adjust the height of the seat cushion 1 without leaving the seat cushion 1 or bending over, making it more user-friendly.

[0046] Furthermore, in this embodiment, the foot pedal 4 is provided with a groove 401 corresponding to the bottom of the gas spring 2, and the groove 401 is recessed into the interior of the foot pedal 4;

[0047] The lifting trigger assembly 5 includes a fixed sleeve 501, a trigger post 505, a first annular piece 502, a second annular piece 503, and an elastic element 504.

[0048] The fixing sleeve 501 is connected to the bottom of the pneumatic rod 2, and the control valve contact 201 extends downward and passes through the bottom of the fixing sleeve 501;

[0049] The first annular piece 502 is fixedly installed on the foot pedal 4 and located above the groove 401. The first annular piece 502 is arranged around the fixed sleeve 501 and the inner ring of the first annular piece 502 and the outer side wall of the fixed sleeve 501 are reserved with a first movable gap. This embodiment does not limit the specific value of the first movable gap. It is only necessary to ensure that after the first annular piece 502 moves, the trigger post 505 can abut against the control valve contact 201.

[0050] The second annular piece 503 is located below the first annular piece 502 and is fixedly connected to the bottom of the fixing sleeve 501;

[0051] One end of the elastic element 504 is connected to the bottom of the second annular piece 503, and the other end of the elastic element 504 is connected to the inner bottom wall of the groove 401.

[0052] The trigger post 505 is disposed on the inner bottom wall of the groove 401 and passes through the second annular piece 503 and the first annular piece 502 sequentially from the inner bottom wall of the groove 401 upwards. The trigger post 505 is left with a preset distance from the control valve contact 201. This distance can be designed according to actual needs, such as 2cm or 3cm, depending on the size of the parts.

[0053] When the foot pedal 4 is subjected to downward pressure, the foot pedal 4 and the first annular plate 502 tilt and float relative to the fixed sleeve 501 so that the trigger post 505 abuts against the control valve contact 201, thereby triggering the gas rod 2 to drive the seat cushion 1 to rise and fall.

[0054] It should be noted that, since the inner ring of the first annular piece 502 and the outer wall of the fixed sleeve 501 in this embodiment have a first movable gap, when the foot pedal 4 is pressed by the user's foot, the foot pedal 4 and the first annular piece 502 can tilt and float relative to the fixed sleeve 501, so that the trigger post 505 abuts against the control valve contact 201. At this time, the control valve opens, and the gas spring 2 can drive the seat cushion 1 to rise or fall. Of course, when it is necessary to adjust the seat cushion 1 to fall, the user also needs to apply a certain pressure to the seat cushion 1 so that the seat cushion 1 can slowly fall under the drive of the gas spring 2.

[0055] After the adjustment is completed, when the user releases the foot pedal 4, the elastic element 504 drives the foot pedal 4 to return to its original position. According to the specific principle of the gas rod 2, the control valve contact 201 disconnects from the trigger column 505, the control valve is closed, and the seat cushion 1 remains in the position after adjustment.

[0056] Specifically, in this embodiment, the elastic element 504 is a spring, and the first annular piece 502 and the second annular piece 503 are both circular iron pieces with through holes in the middle.

[0057] Furthermore, in this embodiment, the outer side wall of the fixing sleeve 501 is provided with a plurality of guide grooves 5011 extending along the lifting direction of the seat cushion 1. The plurality of guide grooves 5011 are evenly distributed on the outer side wall of the fixing sleeve 501, and the inner ring of the first annular piece 502 is provided with guide protrusions 5022 at positions corresponding to the guide grooves 5011.

[0058] The guide protrusion 5022 is located within the guide groove 5011 and a second movable gap is reserved between it and the groove wall of the guide groove 5011. This embodiment does not limit the specific value of the second movable gap, as long as it is ensured that the trigger post 505 can abut against the control valve contact 201 after the first annular plate 502 moves.

[0059] It should be noted that when the first annular plate 502 and the foot pedal 4 are driven to tilt and float relative to the fixed sleeve 501, the side of the foot pedal 4 and the first annular plate 502 that is pressed will sink, and the other side will float. At this time, the guide protrusion 5022 corresponding to the other side of the first annular plate 502 will fit against the groove wall of the guide groove 5011 and move upward along the guide groove 5011. Therefore, the design of the guide groove 5011 can play the role of guiding and limiting the guide protrusion 5022, thereby limiting the range of motion of the foot pedal 4 and the first annular plate 502.

[0060] Furthermore, in this embodiment, the bottom of the air pressure rod 2 is provided with a threaded through hole that connects to its interior, and the top of the fixing sleeve 501 is threadedly connected to the threaded through hole.

[0061] It should be noted that the above design makes it easier for assembly personnel to assemble and fix the fixing sleeve 501.

[0062] Furthermore, in this embodiment, the support base 3 has a mounting hole in the middle;

[0063] The fixing sleeve 501 is fixedly inserted into the mounting hole.

[0064] It should be noted that in the above design, the fixing sleeve 501 and the mounting hole can be assembled by snap-fit ​​or interference fit, and this embodiment does not limit this.

[0065] Furthermore, in order to improve the stability of the adjustable chair, the support base 3 in this embodiment has multiple support legs, which are in contact with the ground.

[0066] In addition, to facilitate the movement of the height-adjustable chair, the aforementioned support legs are equipped with omnidirectional casters 6.

[0067] Furthermore, in this embodiment, the top surface of the foot pedal 4 is evenly provided with a plurality of foot pedal parts 7;

[0068] The surface of the foot pedal 7 is provided with anti-slip patterns.

[0069] It should be noted that, through the above design, the user can directly press the foot pedal 7 to drive the foot pedal 4 to tilt and float relative to the fixed sleeve 501, and the above-mentioned anti-slip pattern can prevent the user's feet from slipping during operation.

[0070] Furthermore, the lifting trigger assembly 5 also includes a first fastener 506, and the first annular piece 502 is fixed to the foot pedal 4 by the first fastener 506.

[0071] It should be noted that the first fastener 506 in this embodiment can be a fixing screw. The above design makes assembly more convenient for assemblers.

[0072] Furthermore, the lifting trigger component 5 in this embodiment also includes a second fastener 507, and the second annular piece 503 is fixed to the fixed sleeve 501 by the second fastener 507.

[0073] It should be noted that the second fastener 507 in this embodiment can be a fixing screw. The above design makes assembly more convenient for assemblers.

[0074] The above provides a detailed description of the adjustable chair provided by this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A height-adjustable chair, comprising a seat cushion (1), a gas spring (2), and a support base (3); the top of the gas spring (2) is connected to the seat cushion (1), and the bottom of the gas spring (2) is connected to the support base (3), characterized in that, The adjustable chair also includes an adjustable trigger assembly (5) and a foot pedal (4); The foot pedal (4) is located below the support base (3) and suspended above the ground. The bottom of the gas spring (2) is provided with a control valve contact (201). The foot pedal (4) is connected to the bottom of the gas spring (2) through the lifting trigger assembly (5). When the foot pedal (4) is subjected to downward pressure, the lifting trigger assembly (5) abuts against the control valve contact (201) to trigger the gas spring (2) to drive the seat cushion (1) to rise and fall.

2. The adjustable chair according to claim 1, characterized in that, The foot pedal (4) is provided with a groove (401) corresponding to the bottom of the gas bar (2), and the groove (401) is recessed into the interior of the foot pedal (4); The lifting trigger assembly (5) includes a fixed sleeve (501), a trigger post (505), a first annular plate (502), a second annular plate (503), and an elastic element (504). The fixing sleeve (501) is connected to the bottom of the pneumatic rod (2), and the control valve contact (201) extends downward and passes through the bottom of the fixing sleeve (501); The first annular piece (502) is fixedly installed on the foot pedal (4) and located above the groove (401). The first annular piece (502) is arranged around the fixed sleeve (501) and the inner ring of the first annular piece (502) and the outer wall of the fixed sleeve (501) are reserved with a first movable gap. The second annular piece (503) is located below the first annular piece (502) and is fixedly connected to the bottom of the fixing sleeve (501); One end of the elastic element (504) is connected to the bottom of the second annular piece (503), and the other end of the elastic element (504) is connected to the inner bottom wall of the groove (401). The trigger post (505) is disposed on the inner bottom wall of the groove (401) and passes through the second annular piece (503) and the first annular piece (502) sequentially from the inner bottom wall of the groove (401) upwards. The trigger post (505) and the control valve contact (201) are kept at a preset distance. When the foot pedal (4) is subjected to downward pressure, the foot pedal (4) and the first annular plate (502) tilt and float relative to the fixed sleeve (501) so that the trigger post (505) abuts against the control valve contact (201), thereby triggering the gas rod (2) to drive the seat cushion (1) to rise and fall.

3. The adjustable chair according to claim 2, characterized in that, The outer wall of the fixed sleeve (501) is provided with a plurality of guide grooves (5011) extending along the lifting direction of the seat cushion (1). The plurality of guide grooves (5011) are evenly distributed on the outer wall of the fixed sleeve (501). The inner ring of the first annular piece (502) is provided with guide protrusions (5022) at positions corresponding to the guide grooves (5011). The guide protrusion (5022) is located within the guide groove (5011) and a second movable gap is reserved between it and the groove wall of the guide groove (5011).

4. The adjustable chair according to claim 2, characterized in that, The bottom of the air pressure rod (2) is provided with a threaded through hole that connects to its interior, and the top of the fixing sleeve (501) is threadedly connected to the threaded through hole.

5. The adjustable chair according to claim 2, characterized in that, The support base (3) has a mounting hole in the middle; The fixing sleeve (501) is fixedly inserted into the mounting hole.

6. The adjustable chair according to claim 1, characterized in that, The support base (3) has multiple support legs, which abut against the ground.

7. The adjustable chair according to claim 6, characterized in that, The support leg is equipped with omnidirectional casters (6).

8. The adjustable chair according to claim 1, characterized in that, The top surface of the foot pedal (4) is evenly provided with multiple foot pedal parts (7); The surface of the foot pedal (7) is provided with anti-slip patterns.

9. The adjustable chair according to claim 2, characterized in that, The lifting trigger assembly (5) further includes a first fastener (506), and the first annular piece (502) is fixed to the foot pedal (4) by the first fastener (506).

10. The adjustable chair according to claim 9, characterized in that, The lifting trigger assembly (5) further includes a second fastener (507), and the second annular piece (503) is fixed to the fixing sleeve (501) by the second fastener (507).

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