Stepless speed-governing gas spring

A technology of stepless speed regulation and gas spring, which is applied in the direction of spring, spring/shock absorber, gas shock absorber, etc., can solve the problem of not being able to adjust the speed of gas spring, and achieve the effect of pressure relief adjustment and reasonable structure

Active Publication Date: 2012-11-14
CHANGZHOU GAS SPRING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gas spring with the above structure can only achieve pressure relief adjustment by eliminating the pressure in the cylinder, and cannot adjust the speed of the gas spring.

Method used

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  • Stepless speed-governing gas spring
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  • Stepless speed-governing gas spring

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Experimental program
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Effect test

Embodiment Construction

[0013] see Figure 1~3 As shown, the stepless speed-regulating gas spring of the present invention includes a cylinder 4, a piston rod 10, a rear plug 1 and a guide sealing assembly. The guide sealing assembly of the present invention includes the front side of the cylinder 4 and sequentially connected The front guide sleeve 9, the guide seal 8 and the connecting seat 7 fix the guide seal assembly in the cylinder 4, the piston rod 10 is guided and sealed by the guide seal assembly, and the rear plug 1 is fixed on the rear side of the cylinder 4. The rear plug 1 can be welded to the rear side of the cylinder 4. see Figure 1~3 As shown, the rear plug 1 of the present invention is sealed and installed at the outer end of the inner cylinder liner 5, the front part of the rear plug 1 is provided with a sealing groove, the sealing ring 3 is installed in the sealing groove, and the inner cylinder liner 5 is sealed by the sealing ring 3 The inner cylinder liner 5 is connected to the...

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PUM

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Abstract

The invention relates to a stepless speed-governing gas spring. A rear plug is installed at the outer end of an inner cylinder sleeve in a sealed mode, the inner cylinder sleeve is connected with a connecting seat, a piston is arranged in the inner cylinder sleeve and divides the inner cylinder sleeve into a front cavity and a rear cavity, a seal ring is installed in a radial chute of the piston, a piston air-returning hole axially arranged on the piston is communicated with the radial chute and the front cavity, a piston rod connected with the piston penetrates from a guiding sealing assembly, and the inner cylinder sleeve is provided with an air hole communicated with the front cavity and an outer cavity and located on the front side of the front cavity. An outer air-returning hole and an inner air-returning hole which are positioned on the rear plug are communicated with the rear cavity, a speed-governing screw is installed in a screwed hole of the rear plug, a valve rod positioned on the upper portion of the speed-governing screw penetrates through a gasket and the seal ring which are installed in a valve rod guiding hole, the end face of the valve rod and an orifice of the outer air-returning hole form a damping flow channel, and a cavity positioned on the upper portion of the valve rod guiding hole is communicated with the outer air-returning hole and the inner air-returning hole. The stepless speed-governing gas spring is reasonable in structure and is installed on a device, and the running speed of the gas spring can be adjusted conveniently.

Description

Technical field [0001] The invention relates to a stepless speed regulating gas spring, belonging to the technical field of gas springs. Background technique [0002] The gas spring is mainly composed of a cylinder tube, a piston in the cylinder tube, a piston rod and a valve rod. The cylinder tube contains gas or a mixture of oil and gas. Since the piston occupies the volume in the cylinder, the pressure difference generated by the cross-sectional area of ​​the piston rod is smaller than the cross-sectional area of ​​the piston to realize the movement of the piston rod. However, the currently disclosed gas spring first welds the rear plug to the rear of the cylinder, and then fills the cylinder with a certain pressure of gas and oil-gas mixture. Once the cylinder is filled with gas and oil-gas mixture, the gas spring has A certain pressure, and usually there is a damping hole on the piston, so the operating speed of the gas spring is controlled by the size of the damping hole. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/02F16F9/44F16F9/34F16F9/36
Inventor 施与秋宁成施萍华吴军罗琪洋
Owner CHANGZHOU GAS SPRING
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