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Length adjustable gas spring

A gas spring, adjustable technology, applied in the direction of springs, springs/shock absorbers, chairs with vertically adjustable seats, etc., can solve the problems of increasing manufacturing costs, reducing product quality, increasing manufacturing costs, etc., to improve production efficiency, The effect of reducing the number of parts and saving manufacturing costs

Inactive Publication Date: 2005-10-12
郑义协
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  • Description
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AI Technical Summary

Problems solved by technology

[0017] As mentioned above, the conventional length-adjustable gas spring is a double-cylinder structure composed of an outer cylinder 10a and an inner cylinder 44a. It is composed of the following structure; The piston assembly 80a composed of precision parts is composed of various parts, so the manufacturing cost increases, and when the management of ultra-precision parts is negligent, the increase of defective products will be caused, and the defective phenomenon in multiple processes will also reduce the product quality. quality, increased manufacturing costs
[0018] In the conventional technology, the shaft support 50a is fixed on the inner side of the lower end of the housing 20a by welding, thus increasing the cost of the manufacturing process.

Method used

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Embodiment Construction

[0049] The concrete structure of the present invention is described in detail with reference to accompanying drawing as follows:

[0050] figure 1 It is a longitudinal section view of a length-adjustable gas spring made according to conventional technology, figure 2 It is a sectional view of the valve assembly of a length-adjustable gas spring made according to conventional technology, image 3 It is a sectional view of the piston assembly of a length-adjustable gas spring made according to conventional technology, Figure 4 It is the longitudinal section view of the first adjustable-length gas spring developed according to the invention. Figure 5 It is the longitudinal section view of the second length-adjustable gas spring developed according to the invention. Image 6 It is the longitudinal section of the third length-adjustable gas spring developed according to the invention. Figure 7 It is the longitudinal section view of the fourth adjustable length gas spring dev...

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Abstract

Length adjustable gas spring of this invention is made up of merely one cylinder (30). It is comprised of single cylinder structure in which pipe for gas transport (70, 70', 70'', 70*) penetrates through the inside of this piston. This invention is configured in a way that the spindle support (130) is fixated between the projected outward projections that is projected out into the inner direction at the lower part of the outer drum (120). Moreover, it is possible to easily realize new functions that could not be realized on existing double cylinder structured matter due to structural limitation on this single cylinder structured length adjustable gas spring.

Description

technical field [0001] This invention relates to the technology of length-adjustable gas spring, which is a single cylinder structure composed of only one cylinder, which minimizes the number of accessories assembled inside the cylinder 30, making the structure of accessories extremely simple, and improving product quality. And create conditions to save manufacturing costs. In addition, the present invention also fixes a shaft support 130 between the protrusion 122 and the protrusion 123 protruding from the lower end of the housing 120 along the inner direction. [0002] When adjusting the height of the chair, the length-adjustable gas spring will play a very important central role. Background technique [0003] The conventional length-adjustable gas spring is a double-cylinder structure composed of an outer cylinder 10a and an inner cylinder 44a, which is composed of the following structure: a valve assembly 40a composed of ultra-precision parts such as a gas switch needle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C3/30F16F9/02F16F9/43
CPCA47C3/30F16F9/0245F16F9/43
Inventor 郑义协
Owner 郑义协
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