Lifting chair

Abstract

The invention 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] The invention relates to the technical field of chair design, in particular to a lifting chair. Background Art

[0002] Chairs are a common seat in people's daily lives, and their shapes and types vary. Lift chairs are often arranged in office scenes to meet the needs of users of different heights.

[0003] The existing conventional lifting chair mainly includes a seat cushion, a gas pressure rod and a support seat. The gas pressure plate is connected between the seat cushion and the support seat, and its main function is to lift and lower.

[0004] At present, the lifting lever of most lifting chairs is set under the chair cushion. When the user needs to adjust the height of the cushion, the user needs to manually operate the lifting lever to trigger the control valve contact of the gas pressure rod, thereby triggering the gas pressure rod to adjust the height of the cushion. During the above operation, the user needs to leave the seat cushion and reach the lever below to adjust the seat cushion. Since the lever is under the chair, the user often needs to bend over to operate it. Therefore, there is a disadvantage of inconvenient operation, which causes certain troubles to the user.

[0005] Therefore, finding a technical solution that can solve the above technical problems has become an important topic studied by technical personnel in this field. Summary of the invention

[0006] The embodiment of the invention discloses a lifting chair, which is used to solve the technical problem that the existing lifting chair is inconvenient to adjust.

[0007] A lifting chair provided by the present invention comprises a seat cushion, a gas pressure rod and a support seat; the top of the gas pressure rod is connected to the seat cushion, the bottom of the gas pressure rod is connected to the support seat, and the lifting chair further comprises a lifting trigger assembly and a foot pedal;

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

[0009] Optionally, the foot pedal is provided with a groove corresponding to the bottom of the gas pressure rod, and the groove is sunken toward the inside of the foot pedal;

[0010] The lifting trigger assembly includes a fixing sleeve, a trigger column, a first annular sheet, a second annular sheet and an elastic member;

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

[0012] The first annular plate is fixedly mounted on the foot pedal and is located above the groove. The first annular plate is arranged around the fixing sleeve and a first movable gap is reserved between the inner ring of the first annular plate and the outer side wall of the fixing sleeve.

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

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

[0015] The trigger column is arranged on the inner bottom wall of the groove and passes through the second annular sheet and the first annular sheet in sequence upward from the inner bottom wall of the groove, and a preset distance is left between the trigger column and the control valve contact;

[0016] When the foot pedal is subjected to downward pressure, the foot pedal and the first annular sheet are tilted and floated relative to the fixing sleeve so that the trigger column contacts the control valve contact, thereby triggering the gas pressure rod to drive the seat cushion to rise and fall.

[0017] Optionally, a plurality of guide grooves extending along the lifting direction of the seat cushion are arranged on the outer side wall of the fixing sleeve, and the plurality of guide grooves are evenly distributed on the outer side wall of the fixing sleeve, and a guide protrusion is arranged at a position of the inner circle of the first annular sheet corresponding to the guide groove;

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

[0019] Optionally, a threaded through hole communicating with the interior of the gas pressure rod is formed at the bottom thereof, 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 seat;

[0021] The fixing sleeve is fixedly arranged in the mounting hole.

[0022] Optionally, the support base has a plurality of support legs, and the plurality of support legs abut against the ground.

[0023] Optionally, the support leg is provided with a universal roller.

[0024] Optionally, a plurality of treading parts are evenly arranged on the top surface of the foot pedal;

[0025] The surface of the treading part is provided with an anti-skid pattern.

[0026] Optionally, the lifting trigger assembly further includes a first fastener, and the first annular sheet is fixed to the foot pedal via the first fastener.

[0027] Optionally, the lifting trigger assembly further includes a second fastener, and the second annular sheet is fixed to the fixing sleeve via the second fastener.

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

[0029] In the lifting chair of this embodiment, a foot pedal is designed below the support seat for the user to support the foot. The foot pedal is suspended above the ground and connected to the bottom of the gas pressure rod through a lifting trigger assembly. In the above design, when the user needs to adjust the height of the seat cushion, the user does not need to leave the seat cushion. He only needs to press the foot pedal hard to make the lifting trigger assembly contact with the control valve contact point to trigger the gas pressure rod to work, and then the gas pressure rod can drive the seat cushion to rise or fall. Through the above design, the user can simply and conveniently complete the height adjustment of the seat cushion without leaving the seat cushion or bending over, which is more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A structural schematic diagram of a lifting chair provided by the present invention;

[0032] Figure 2 An exploded diagram of the structure of a lifting chair provided by the present invention;

[0033] Figure 3 A schematic diagram of the connection between a partial lifting trigger assembly and a gas pressure rod of a lifting chair provided by the present invention;

[0034] Figure 4 A schematic diagram of a lifting chair provided by the present invention, showing a partial lifting trigger assembly connected to a foot pedal;

[0035] Figure 5 A schematic diagram of the positions of a first annular piece and a fixing sleeve of a lifting chair provided by the present invention;

[0036] Figure 6 A structural cross-sectional view of a lifting chair provided by the present invention;

[0037] Figure 7 A structural cross-sectional view of a lifting chair provided by the present invention when not adjusted;

[0038] Figure 8 A structural cross-sectional view of a lifting chair provided by the present invention after a foot pedal is subjected to stepping pressure;

[0039] Illustration: seat cushion 1; gas pressure rod 2; control valve contact 201; support seat 3; foot pedal 4; groove 401; lifting trigger assembly 5; fixing sleeve 501; guide groove 5011; first annular piece 502; guide protrusion 5022; second annular piece 503; elastic member 504; trigger column 505; first fastener 506; second fastener 507; universal roller 6; pedal part 7. DETAILED DESCRIPTION

[0040] The invention discloses a lifting chair, which is used to solve the technical problem that the existing lifting chair is inconvenient to adjust.

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 8 , a lifting chair provided by an embodiment of the present invention comprises a seat cushion 1, a gas pressure rod 2 and a support seat 3; the top of the gas pressure rod 2 is connected to the seat cushion 1, and the bottom of the gas pressure rod 2 is connected to the support seat 3, and the lifting chair further comprises a lifting trigger component 5 and a foot pedal 4;

[0043] The foot pedal 4 is located below the support seat 3 and is suspended above the ground. A control valve contact 201 is provided at the bottom of the pneumatic rod 2. The foot pedal 4 is connected to the bottom of the pneumatic rod 2 through the lifting trigger assembly 5. When the foot pedal 4 is subjected to downward pressure, the lifting trigger assembly 5 contacts the control valve contact 201 to trigger the pneumatic rod 2 to drive the seat cushion 1 to rise and fall.

[0044] It should be noted that the gas pressure rod 2 in this embodiment is a prior art, and its specific working principle is: by triggering the control valve contact 201, the control valve is opened, and the nitrogen pressure inside the gas pressure rod 2 circulates from the lower end of the piston to the upper end, and the gas pressure rod 2 can drive the seat cushion 1 to rise. When the control valve is closed, the piston position will stay at the position just adjusted, that is, the seat cushion 1 is maintained at the set height just now. It can be seen that when the height of the seat cushion 1 needs to be adjusted, the control valve contact 201 can be triggered to open the control valve.

[0045] In the lifting chair of this embodiment, a foot pedal 4 for supporting the user's feet is designed below the support seat 3. The foot pedal 4 is suspended above the ground and connected to the bottom of the gas pressure rod 2 through the lifting trigger assembly 5. In the above 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. He only needs to press the foot pedal 4 hard at any position on the top surface of the foot pedal 4 to make the lifting trigger assembly 5 collide with the control valve contact 201 to trigger the gas pressure rod 2 to work, and then the gas pressure rod 2 can drive the seat cushion 1 to rise or fall. Through the above design, the user can simply and conveniently complete the height adjustment of the seat cushion 1 without leaving the seat cushion 1 or bending over, which is more convenient for users to use.

[0046] Furthermore, the foot pedal 4 in this embodiment is provided with a groove 401 corresponding to the bottom of the gas pressure rod 2, and the groove 401 is recessed toward the inside of the foot pedal 4;

[0047] The lifting trigger assembly 5 includes a fixing sleeve 501, a trigger column 505, a first annular sheet 502, a second annular sheet 503 and an elastic member 504;

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

[0049] The first annular sheet 502 is fixedly mounted on the foot pedal 4 and is located above the groove 401. The first annular sheet 502 is arranged around the fixing sleeve 501 and a first movable gap is reserved between the inner ring of the first annular sheet 502 and the outer wall of the fixing sleeve 501. The embodiment does not limit the specific value of the first movable gap. It is only necessary to ensure that the trigger column 505 can contact the control valve contact 201 after the first annular sheet 502 moves.

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

[0051] One end of the elastic member 504 is connected to the bottom of the second annular sheet 503, and the other end of the elastic member 504 is connected to the inner bottom wall of the groove 401;

[0052] The trigger column 505 is arranged on the inner bottom wall of the groove 401 and passes through the second annular plate 503 and the first annular plate 502 in sequence from the inner bottom wall of the groove 401 upward. A preset distance is left between the trigger column 505 and the control valve contact 201. The distance can be designed according to actual needs and can be 2 cm, 3 cm, and is specifically selected according to the size of the parts.

[0053] When the foot pedal 4 is subjected to downward pressure, the foot pedal 4 and the first annular piece 502 are tilted and floated relative to the fixing sleeve 501 so that the trigger column 505 contacts the control valve contact 201, thereby triggering the gas pressure rod 2 to drive the seat cushion 1 to rise and fall.

[0054] It should be noted that, since a first movable gap is reserved between the inner circle of the first annular plate 502 and the outer wall of the fixed sleeve 501 in this embodiment, when the foot pedal 4 is subjected to the pressure of the user's foot, the foot pedal 4 and the first annular plate 502 can tilt and float relative to the fixed sleeve 501, so that the trigger column 505 and the control valve contact 201 are in conflict. At this time, the control valve opens, and the pneumatic rod 2 can drive the seat cushion 1 to rise or fall. Of course, when it is necessary to adjust the seat cushion 1 to descend, the user also needs to apply a certain pressure to the seat cushion 1 so that the seat cushion 1 can slowly descend under the drive of the pneumatic rod 2.

[0055] When the adjustment is completed and the user releases the foot pedal 4, the elastic member 504 drives the foot pedal 4 to return to its original position. According to the specific principle of the above-mentioned gas pressure rod 2, the control valve contact 201 is disconnected from the trigger column 505, the control valve is closed, and the seat cushion 1 maintains the position just adjusted.

[0056] Specifically, the elastic member 504 in this embodiment is a spring, and the first annular sheet 502 and the second annular sheet 503 are both circular iron sheets with a through hole in the middle.

[0057] Furthermore, in this embodiment, a plurality of guide grooves 5011 extending along the lifting direction of the seat cushion 1 are arranged on the outer wall of the fixing sleeve 501, and the plurality of guide grooves 5011 are evenly distributed on the outer wall of the fixing sleeve 501, and a guide protrusion 5022 is arranged at a position corresponding to the guide groove 5011 on the inner circle of the first annular sheet 502;

[0058] The guide protrusion 5022 is located in the guide groove 5011 and a second movable gap is reserved between the guide protrusion 5022 and the groove wall of the guide groove 5011. The present embodiment does not limit the specific value of the second movable gap. It is only necessary to ensure that after the first annular piece 502 moves, the trigger column 505 can contact the control valve contact 201.

[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 compressed side of the foot pedal 4 and the first annular plate 502 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 into the groove wall of the guide groove 5011 and move upward along the guide groove 5011. Therefore, the design of the above-mentioned guide groove 5011 can play a guiding and limiting role for the cover guide protrusion 5022, thereby limiting the range of movement of the foot pedal 4 and the first annular plate 502.

[0060] Furthermore, a threaded through hole communicating with the interior of the gas pressure rod 2 is provided at the bottom thereof, and the top of the fixing sleeve 501 is threadedly connected to the threaded through hole.

[0061] It should be noted that, through the above design, it is convenient for assemblers to assemble and fix the fixing sleeve 501 more conveniently.

[0062] Furthermore, a mounting hole is provided in the middle of the support seat 3 in this embodiment;

[0063] The fixing sleeve 501 is fixedly disposed in 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-fitting or interference fitting, and this embodiment does not limit this.

[0065] Furthermore, in order to improve the stability of the lifting chair, the support base 3 in this embodiment has a plurality of support legs, and the plurality of support legs are in contact with the ground.

[0066] In addition, in order to facilitate the movement of the lifting chair, universal rollers 6 are provided on the above-mentioned supporting legs.

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

[0068] The surface of the treading portion 7 is provided with an anti-slip pattern.

[0069] It should be noted that, through the above design, the user can directly step on the pedal portion 7 to drive the foot pedal 4 to tilt and float relative to the fixing sleeve 501, and the above 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 through the first fastener 506 .

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

[0072] Furthermore, the lifting trigger assembly 5 in this embodiment further includes a second fastener 507 , and the second annular piece 503 is fixed to the fixing sleeve 501 via 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 can make assembly more convenient for assemblers.

[0074] The above is a detailed introduction to a lifting chair provided by the present invention. For those skilled in the art, according to the ideas of the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A lifting chair, comprising a seat cushion (1), a gas pressure rod (2) and a support seat (3); the top of the gas pressure rod (2) is connected to the seat cushion (1), and the bottom of the gas pressure rod (2) is connected to the support seat (3), characterized in that: The lifting chair also includes a lifting trigger assembly (5) and a foot pedal (4); The foot pedal (4) is located below the support seat (3) and is suspended above the ground. A control valve contact (201) is provided at the bottom of the gas pressure rod (2). The foot pedal (4) is connected to the bottom of the gas pressure rod (2) via the lifting trigger component (5). When the foot pedal (4) is subjected to downward pressure, the lifting trigger component (5) contacts the control valve contact (201) to trigger the gas pressure rod (2) to drive the seat cushion (1) to rise and fall.

2. The chair lift according to claim 1, characterized in that: The foot pedal (4) is provided with a groove (401) corresponding to the bottom of the gas pressure rod (2), and the groove (401) is recessed toward the inside of the foot pedal (4); The lifting trigger assembly (5) comprises a fixing sleeve (501), a trigger column (505), a first annular sheet (502), a second annular sheet (503) and an elastic member (504); The fixing sleeve (501) is connected to the bottom of the gas pressure rod (2), and the control valve contact (201) extends downward and passes through the bottom of the fixing sleeve (501); The first annular plate (502) is fixedly mounted on the foot pedal (4) and is located above the groove (401); the first annular plate (502) is arranged around the fixing sleeve (501) and a first movable gap is reserved between the inner ring of the first annular plate (502) and the outer wall of the fixing sleeve (501); The second annular sheet (503) is located below the first annular sheet (502) and is fixedly connected to the bottom of the fixing sleeve (501); One end of the elastic member (504) is connected to the bottom of the second annular sheet (503), and the other end of the elastic member (504) is connected to the inner bottom wall of the groove (401); The trigger column (505) is arranged on the inner bottom wall of the groove (401) and passes through the second annular sheet (503) and the first annular sheet (502) in sequence upward from the inner bottom wall of the groove (401), and a preset distance is left between the trigger column (505) and the control valve contact (201); 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 fixing sleeve (501) so that the trigger column (505) contacts the control valve contact (201), thereby triggering the gas pressure rod (2) to drive the seat cushion (1) to rise and fall.

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

4. The chair lift according to claim 2, characterized in that: The bottom of the gas pressure rod (2) is provided with a threaded through hole communicating with the interior thereof, and the top of the fixing sleeve (501) is threadedly connected to the threaded through hole.

5. The chair lift according to claim 2, characterized in that: A mounting hole is provided in the middle of the support seat (3); The fixing sleeve (501) is fixedly inserted into the mounting hole.

6. The chair lift according to claim 1, characterized in that: The support seat (3) has a plurality of support legs, and the plurality of support legs are in contact with the ground.

7. The chair lift according to claim 6, characterized in that: The support leg is provided with a universal roller (6).

8. The chair lift according to claim 1, characterized in that: The top surface of the foot pedal (4) is evenly provided with a plurality of treading portions (7); The surface of the treading portion (7) is provided with an anti-slip pattern.

9. The chair lift according to claim 2, characterized in that: The lifting trigger assembly (5) further comprises a first fastener (506), and the first annular plate (502) is fixed to the foot pedal (4) via the first fastener (506).

10. The chair lift according to claim 9, characterized in that: The lifting trigger assembly (5) further comprises a second fastener (507), and the second annular sheet (503) is fixed to the fixing sleeve (501) via the second fastener (507).

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