Ultra-long lifting pneumatic rod

Abstract

The utility model relates to the technical field of furniture, in particular to an ultra-long type lifting pneumatic rod which comprises a base, a shell is fixedly connected in the base, a piston rod is fixedly connected in the base and fixedly connected in the shell, an external air cylinder is slidably connected in the shell, and the piston rod is fixedly connected in the external air cylinder. The outer wall of the external air cylinder is fixedly connected with a limiting plate, and the limiting plate is slidably connected to the interior of the shell. The sliding rod drives the valve shaft to slide downwards, gas enters the pneumatic rod body in the sliding-down process of the valve shaft, pressure is applied to the external air cylinder, the external air cylinder drives the pneumatic rod body to slide downwards, and air in the pneumatic rod body is compressed by combining the piston plate in the sliding-down process of the pneumatic rod body. The internal air pressure of the pneumatic rod body is larger than the external air pressure, and the pneumatic rod body slides downwards by combining the external pressure, so that the descending effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to an extra-long lifting pneumatic rod. Background Art

[0002] The extra-long pneumatic lift rod is a pneumatic device that can achieve a wide range of lifting strokes. It is driven by compressed air and provides smooth and rapid lifting and lowering motion, making it easy to operate.

[0003] In the prior art, in order to adapt to the comfort of people during work, office chairs are usually equipped with an adjustable lifting structure to adjust the height of the office chair. Ordinary office chairs are usually adjusted by ordinary threaded rods combined with screw sleeves. During the adjustment process, the screw sleeve needs to be rotated to make the office chair rise and fall. At the same time, the person needs to constantly test the height of the office chair. The process is relatively complicated and not convenient for quick adjustment operations. Therefore, the utility model designs an extra-long lifting pneumatic rod that is combined with the office chair installation to adjust the height of the office chair. Summary of the Invention

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an extra-long lifting pneumatic rod.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an extra-long lifting pneumatic rod, including a base, the interior of the base is fixedly connected to an outer shell, the interior of the base is fixedly connected to a piston rod, the piston rod is fixedly connected to the interior of the outer shell, the interior of the outer shell is slidably connected to an external cylinder, the outer wall of the external cylinder is fixedly connected to a limit plate, and the limit plate is slidably connected to the interior of the outer shell.

[0006] As a further description of the above technical solution: the interior of the external cylinder is fixedly connected to a pneumatic rod body, the interior of the pneumatic rod body is fixedly connected to a sleeve shaft, the interior of the sleeve shaft is slidably connected to a sliding rod, the lower end of the sliding rod is fixedly connected to a valve shaft, and the valve shaft is slidably connected to the interior of the pneumatic rod body.

[0007] As a further description of the above technical solution: a vent hole is opened inside the pneumatic rod body, and a piston plate is slidably connected to the inside of the pneumatic rod body, and the piston plate is fixedly connected to the upper end of the piston rod.

[0008] As a further description of the above technical solution: the outer wall of the external cylinder is fixedly connected to a fixed seat, the sliding rod is slidably connected to the inside of the fixed seat, the inside of the fixed seat is rotatably connected to a rotating rod, and a spring is provided inside the fixed seat.

[0009] As a further description of the above technical solution: two springs are provided, one end of the spring is fixedly connected to the inside of the fixing seat, and the other end of the spring is fixedly connected to the inside of the rotating rod, and a mounting hole is opened inside the fixing seat.

[0010] As a further description of the above technical solution: the outer wall of the base is provided with a movable component, and the movable component is provided with five groups. The movable component includes a connecting plate, the connecting plate is fixedly connected to the outer wall of the base, the internal rotation of the connecting plate is connected to the fixed frame, and the internal rotation of the fixed frame is connected to the hub.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the existing technology, this extra-long lifting pneumatic rod drives the valve shaft to slide down through the sliding rod, so that the gas enters the interior of the pneumatic rod body during the sliding process of the valve shaft. By applying pressure to the external cylinder, the external cylinder drives the pneumatic rod body to slide down. During the sliding process of the pneumatic rod body, the piston plate compresses the air inside the pneumatic rod body, making the internal air pressure of the pneumatic rod body greater than the external air pressure. Combined with the external pressure, the pneumatic rod body slides downward to achieve the descending effect.

[0013] 2. Compared with the existing technology, this extra-long lifting pneumatic rod stops applying pressure to the external cylinder, rotates the rotating rod to rotate the rotating rod, and uses the middle section of the rotating rod to squeeze the sliding rod, so that the sliding rod slides down and drives the valve shaft to move downward. During the downward movement of the valve shaft, the nitrogen inside the external cylinder enters the interior of the pneumatic rod body through the vent, thereby changing the internal air pressure of the pneumatic rod body, and then the pneumatic rod body drives the external cylinder to rise, thereby achieving the effect of rising regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structural diagram of the super-long lifting pneumatic rod proposed in the utility model;

[0015] Figure 2 This is a structural diagram of the outer shell of the super-long lifting pneumatic rod proposed in the utility model;

[0016] Figure 3 This is a structural diagram of the external cylinder of the extra-long lifting pneumatic rod proposed in the utility model;

[0017] Figure 4 This is a structural diagram of the pneumatic rod body of the super-long lifting pneumatic rod proposed in the utility model;

[0018] Figure 5 This is a structural diagram of the rotating rod of the super-long lifting pneumatic rod proposed in this utility model.

[0019] Legend:

[0020] 1. Base; 2. Outer shell; 3. Piston rod; 4. External cylinder; 5. Limit plate; 6. Pneumatic rod body; 7. Sleeve shaft; 8. Slide rod; 9. Valve shaft; 10. Vent hole; 11. Piston plate; 12. Fixed seat; 13. Rotating rod; 14. Spring; 15. Mounting hole; 16. Connecting plate; 17. Fixed frame; 18. Hub. DETAILED DESCRIPTION

[0021] Reference Figure 1-5 The extra-long lifting pneumatic rod provided by the utility model includes: a base 1, the interior of the base 1 is fixedly connected to a shell 2, the interior of the base 1 is fixedly connected to a piston rod 3, the piston rod 3 is fixedly connected to the interior of the shell 2, the interior of the shell 2 is slidably connected to an external cylinder 4, the interior of the external cylinder 4 is flushed with nitrogen gas, the outer wall of the external cylinder 4 is fixedly connected to a limiting plate 5, the limiting plate 5 is slidably connected to the interior of the shell 2, and plays a limiting role in the sliding process of the external cylinder 4 through the limiting plate 5, the interior of the external cylinder 4 is fixedly connected to a pneumatic rod body 6, the interior of the pneumatic rod body 6 is fixedly connected to a sleeve shaft 7, the interior of the sleeve shaft 7 is slidably connected to a sliding rod 8, the lower end of the sliding rod 8 is fixedly connected to a valve shaft 9, the valve shaft 9 is slidably connected to the interior of the pneumatic rod body 6, and the sliding of the valve shaft 9 driven by the sliding rod 8 allows gas to enter the interior of the pneumatic rod body 6.

[0022] A vent hole 10 is provided inside the pneumatic rod body 6, which facilitates the flow of nitrogen into the interior of the pneumatic rod body 6 during the rising adjustment process. The interior of the pneumatic rod body 6 is slidably connected to a piston plate 11, which is fixedly connected to the upper end of the piston rod 3. The design of the piston plate 11 can squeeze the internal gas during the sliding process of the pneumatic rod body 6. The outer wall of the external cylinder 4 is fixedly connected to a fixed seat 12, and the slide rod 8 is slidably connected to the interior of the fixed seat 12. The interior of the fixed seat 12 is rotatably connected to a rotating rod 13, and the design of the rotating rod 13 can drive the slide rod 8 to slide down. A spring 14 is provided inside the fixed seat 12, and there are two springs 14. One end of the spring 14 is fixedly connected to the interior of the fixed seat 12, and the other end of the spring 14 is fixedly connected to the interior of the rotating rod 13. The rotating rod 13 can be driven to reset by the two springs 14. A mounting hole 15 is provided inside the fixed seat 12, and the mounting hole 15 can facilitate the fixing of the fixed seat 12 to the bottom of the office chair.

[0023] The outer wall of the base 1 is provided with a moving component, and there are five groups of moving components. The moving component includes a connecting plate 16, which is fixedly connected to the outer wall of the base 1. The internal rotation of the connecting plate 16 is connected to the fixed frame 17, and the internal rotation of the fixed frame 17 is connected to the wheel hub 18. The moving component facilitates the multi-directional movement and adjustment of the office chair.

[0024] When the pneumatic rod 6 is in a certain position, the hand releases the pressure, and the piston rod 3 is released, and the piston rod 3 is pressed down and the piston plate 11 is pressed down. When the seat is lowered to the desired height, the spring 14 is released to drive the lever 13 to reset, and the valve shaft 9 and the sliding rod 8 are reset by the internal air pressure of the pneumatic rod body 6, so that the position of the pneumatic rod body 6 is opposed by the air pressure at the upper and lower ends of the internal piston plate 11, so that the pneumatic rod body 6 is suspended, thereby achieving the effect of lowering adjustment. When it is necessary to raise the seat, the person leaves the seat and lifts the lever 13 in the same way, so that the lever 13 drives the sliding rod 8 and the valve shaft 9 to slide down, and the nitrogen inside the external cylinder 4 enters the interior of the pneumatic rod body 6 through the air vent 10. The nitrogen forms pressure on the piston plate 11 from the upper end of the piston plate 11, thereby making the pneumatic rod body 6 rise and adjust. At this time, the external cylinder 4 and the upper end of the pneumatic rod body 6 do not apply pressure, so that the office chair can be raised as a whole. After adjusting to the required height, the lever 13 is released to allow the spring 14 to reset the lever 13, and the valve shaft 9 and the sliding rod 8 are reset by the air pressure inside the pneumatic rod body 6, so that the office chair is suspended, thereby completing the lifting adjustment.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An extra-long lifting pneumatic rod, comprising a base (1), characterized in that: The interior of the base (1) is fixedly connected to the outer shell (2), the interior of the base (1) is fixedly connected to the piston rod (3), the piston rod (3) is fixedly connected to the interior of the outer shell (2), the interior of the outer shell (2) is slidably connected to the external cylinder (4), the outer wall of the external cylinder (4) is fixedly connected to a limit plate (5), and the limit plate (5) is slidably connected to the interior of the outer shell (2).

2. The extra-long lifting pneumatic rod according to claim 1, characterized in that: The interior of the external cylinder (4) is fixedly connected to a pneumatic rod body (6), the interior of the pneumatic rod body (6) is fixedly connected to a sleeve shaft (7), the interior of the sleeve shaft (7) is slidably connected to a slide rod (8), the lower end of the slide rod (8) is fixedly connected to a valve shaft (9), and the valve shaft (9) is slidably connected to the interior of the pneumatic rod body (6).

3. The extra-long lifting pneumatic rod according to claim 2, characterized in that: A vent hole (10) is provided inside the pneumatic rod body (6), and a piston plate (11) is slidably connected inside the pneumatic rod body (6), and the piston plate (11) is fixedly connected to the upper end of the piston rod (3).

4. The extra-long lifting pneumatic rod according to claim 2, characterized in that: The outer wall of the external cylinder (4) is fixedly connected to a fixed seat (12), the sliding rod (8) is slidably connected to the interior of the fixed seat (12), the interior of the fixed seat (12) is rotatably connected to a rotating rod (13), and a spring (14) is provided inside the fixed seat (12).

5. The extra-long lifting pneumatic rod according to claim 4, characterized in that: Two springs (14) are provided, one end of the spring (14) is fixedly connected to the inside of the fixing seat (12), and the other end of the spring (14) is fixedly connected to the inside of the rotating rod (13), and a mounting hole (15) is provided inside the fixing seat (12).

6. The extra-long lifting pneumatic rod according to claim 1, characterized in that: The outer wall of the base (1) is provided with a movable assembly, and the movable assembly is provided in five groups. The movable assembly includes a connecting plate (16), the connecting plate (16) is fixedly connected to the outer wall of the base (1), the interior of the connecting plate (16) is rotatably connected to a fixed frame (17), and the interior of the fixed frame (17) is rotatably connected to a wheel hub (18).

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