Mesh chair with adjustable seat cushion height

Abstract

The utility model relates to the technical field of net chairs with height-adjustable seat cushions, and discloses a net chair with height-adjustable seat cushions, which comprises a net chair with a steel pipe structure and a seat cushion arranged on the net chair, a seat frame is fixedly arranged on the net chair, the seat cushion is sleeved on the seat frame and can be adjusted up and down, and the net chair is fixedly arranged on the seat frame. An oil tank is arranged in the seat frame, the oil tank is communicated with a telescopic cylinder fixed in the seat frame, a telescopic rod is fixedly arranged on the lower end face of the cushion, and a piston inserted in the telescopic cylinder in a sealed mode is arranged at the lower end of the telescopic rod. The spring valve is pressed down to enable the through pipe to be communicated, so that the telescopic rod is jacked up by oil under the action of the spring so as to adjust the height of the seat cushion, after the spring valve is released, the oil in the telescopic cylinder cannot return so as to lock the height of the seat cushion, and the seat cushion is simple and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of mesh chairs with adjustable seat height, in particular to a mesh chair with adjustable seat height. Background Art

[0002] The heights of chairs and seat cushions on the market are different, indicating that people have different requirements for the height of seat cushions. There is currently an office chair on the market that is controlled by hydraulic pressure to raise or lower the chair. However, this chair has a large structure and is usually used in offices.

[0003] However, in real life, many places are very narrow or there is no condition to place extra chairs. At this time, a seat cushion is needed to be placed on the chair, and the height of the chair can be adjusted by adjusting the height of the seat cushion. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: in order to overcome the problems existing above, a mesh chair with adjustable seat height is provided, which solves the above problems.

[0005] The utility model solves its technical problems by adopting the following technical solutions:

[0006] A mesh chair with adjustable seat height includes a mesh chair with a steel pipe structure and a seat cushion arranged on the mesh chair. A seat frame is fixedly arranged on the mesh chair, the seat cushion is sleeved on the seat frame and can be adjusted up and down. An oil tank is arranged in the seat frame, the oil tank is communicated with a telescopic cylinder fixed in the seat frame. A telescopic rod is fixedly arranged on the lower end face of the seat cushion, and a piston is arranged at the lower end of the telescopic rod and is hermetically inserted into the telescopic cylinder.

[0007] Preferably, a piston slides up and down in the oil tank, the piston is pushed by a spring arranged in the oil tank, the spring presses down the piston to supply the hydraulic oil arranged in the oil tank into the telescopic cylinder through a through pipe, and then the telescopic rod is pushed upward. Both ends of the through pipe are communicated with the telescopic cylinder and the oil tank.

[0008] Preferably, a spring valve is connected in series in the through pipe to control the flow of oil.

[0009] Preferably, a plurality of vertical stroke chutes are arranged at intervals on the side of the seat frame, and sliding blocks are fixedly arranged on the inner side wall of the seat cushion and slide in the stroke chutes.

[0010] Preferably, the sliding stroke of the stroke chute is less than the sliding stroke of the telescopic rod to prevent the telescopic rod from coming out upward.

[0011] Preferably, in order to increase the compressive strength of the seat cushion and prevent the seat cushion from sagging inward, a plurality of protruding rib plates are provided at intervals on the lower end surface of the seat cushion.

[0012] The advantages and positive effects of the present utility model are as follows: Press the spring valve to make the through pipe conduct. In this way, under the action of the spring, the hydraulic oil jacks up the telescopic rod, thereby adjusting the height of the seat cushion. After releasing the spring valve, the hydraulic oil in the telescopic cylinder cannot return, thereby locking the height of the seat cushion, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic structural view of the adjustable seat cushion in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic views, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0017] The following further details the embodiments of the present utility model in conjunction with the drawings:

[0018] As Figure 1-2 shown, a kind of mesh chair with adjustable seat cushion height of the present utility model includes a mesh chair 10 with a steel pipe structure and a seat cushion 12 arranged on the mesh chair 10. A seat frame 13 is fixedly arranged on the mesh chair 10. The seat cushion 12 is sleeved on the seat frame 13 and can be adjusted up and down. A fuel tank 16 is arranged in the seat frame 13. The fuel tank 16 is communicated with a telescopic cylinder 21 fixed in the seat frame 13. A telescopic rod 22 is fixedly arranged on the lower end surface of the seat cushion 12. The lower end of the telescopic rod 22 is provided with a piston hermetically inserted in the telescopic cylinder 21.

[0019] Preferably, a piston 18 is slidably arranged up and down in the fuel tank 16. The piston 18 is pushed by a spring 17 arranged in the fuel tank 16. The spring 17 presses down the piston 18, thereby supplying the hydraulic oil arranged in the fuel tank 16 into the telescopic cylinder 21 through a through pipe 19, and then jacking up the telescopic rod 22. Both ends of the through pipe 19 are communicated with the telescopic cylinder 21 and the fuel tank 16.

[0020] Preferably, a spring valve 20 is connected in series in the through pipe 19 to control the movement of the hydraulic oil.

[0021] Preferably, a plurality of vertical travel chutes 14 are provided at intervals on the side of the seat frame 13, and sliders 15 slidably disposed in the travel chutes 14 are fixedly provided on the inner side wall of the seat cushion 12.

[0022] Preferably, the sliding travel of the travel chute 14 is less than the sliding travel of the telescopic rod 22 to prevent the telescopic rod 22 from disengaging upward.

[0023] Preferably, in order to increase the compressive strength of the seat cushion 12 and prevent the seat cushion 12 from being recessed inward, a plurality of protruding rib plates 23 are provided at intervals on the lower end surface of the seat cushion 12.

[0024] During specific implementation, the spring valve 20 is pressed to make the through pipe 19 conductive. In this way, under the action of the spring 17, the hydraulic oil jacks up the telescopic rod 22 to adjust the height of the seat cushion 12. After the spring valve 20 is released, the hydraulic oil in the telescopic cylinder 21 cannot return, thereby locking the height of the seat cushion 12, which is simple and convenient.

[0025] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners obtained by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A mesh chair with adjustable seat cushion height, characterized in that: The invention comprises a mesh chair (10) of a steel pipe structure and a seat cushion (12) arranged on the mesh chair (10); a seat frame (13) is fixedly arranged on the mesh chair (10); the seat cushion (12) is mounted on the seat frame (13) and can be adjusted up and down; an oil tank (16) is arranged in the seat frame (13); the oil tank (16) is connected to a telescopic cylinder (21) fixed in the seat frame (13); a telescopic rod (22) is fixedly arranged on the lower end surface of the seat cushion (12); and a piston is provided at the lower end of the telescopic rod (22) and is sealably inserted in the telescopic cylinder (21).

2. A mesh chair with adjustable seat cushion height according to claim 1, characterized in that: A piston (18) is provided in the oil tank (16) so as to slide up and down. The piston (18) is pushed by a spring (17) arranged in the oil tank (16). The spring (17) presses the piston (18) downward, thereby supplying hydraulic oil arranged in the oil tank (16) into the telescopic cylinder (21) through a through pipe (19), thereby pushing the telescopic rod (22) upward. Both ends of the through pipe (19) are connected with the telescopic cylinder (21) and the oil tank (16).

3. A mesh chair with adjustable seat cushion height according to claim 2, characterized in that: A spring valve (20) is serially connected in the through pipe (19) for controlling the flow of oil.

4. A mesh chair with adjustable seat cushion height according to claim 3, characterized in that: A plurality of vertical travel slide grooves (14) are arranged at intervals on the side of the seat frame (13), and a sliding block (15) is fixedly arranged on the inner side wall of the seat cushion (12) and is slidably arranged in the travel slide groove (14).

5. The mesh chair with adjustable seat cushion height according to claim 4, characterized in that: The sliding stroke of the travel slide groove (14) is smaller than the sliding stroke of the telescopic rod (22), thereby preventing the telescopic rod (22) from slipping out upwards.

6. The mesh chair with adjustable seat cushion height according to claim 5, characterized in that: In order to increase the compressive strength of the seat cushion (12) and prevent the seat cushion (12) from being dented inwards, a plurality of raised ribs (23) are provided at intervals on the lower end surface of the seat cushion (12).

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