Patent No.:CN101487508 Date:2008-01-14

Google Patent: https://patents.google.com/patent/CN101487508A/en?oq=CN101487508

China Patent: http://epub.cnipa.gov.cn/

Abstract

The invention provides a multiple constant damping force gas spring which is formed by connecting a piston assembly with a cylinder body through a gas spring sealing system. The piston assembly is formed by sequentially fastening a rear piston pressing sleeve, a constant force spring, a pressure relief sleeve, a bipyramid piston body core and a front piston pressing disk together, and tightly pressing with clamp nuts. The principle that the multiple constant damping force gas spring generates constant double pressure meets application requirements of various supports of certain medical apparatus and instruments, LCD TVs and LCDs.

Description

A kind of pressure-doubling constant-damping force gas spring
Technical field
The present invention relates to a kind of air spring, particularly a kind of pressure-doubling constant-damping force gas spring.
Background technique
Along with the field that air spring is used is more and more wider, also more and more diversified during application to the attainable performance requirement of air spring, times resistance of original multiplication of voltage damping force air spring is that frictionally produces, this mode disadvantage be air spring when stretching frictional force become and flog a dead horse, influence or reduce stretching force (being support force).
Summary of the invention
Task of the present invention is to provide a kind of and produces the constant pressure-doubling constant-damping force gas spring of multiplication of voltage by piston.
In order to solve above technical problem, a kind of multiplication of voltage constant damping power spring of the present invention is to be formed by connecting by air spring sealing system and cylinder body by piston assembly, described piston assembly by piston after gland, constant force spring rush down gland, bipyramid piston master’s core and piston before compressing tablet tighten together according to the order of sequence, compress by gland nut and form.
Described O type circle compressing tablet and rush down between gland the semifloating sealing before piston.
The advantage of a kind of multiplication of voltage constant damping power spring of above structure is: this multiplication of voltage constant damping power spring produces the constant principle of multiplication of voltage by piston, it has satisfied some medical apparatus tool this air spring, LCD TVs, the application demand of the various supports of liquid crystal display, the object weight one that it is supported when certain support regularly, when changing the upper-lower position of object, the variation of support angle will take place in support arm, the object gravity arm of force also changes, the used support force of support arm also will increase or reduce, and its F1 power that piston structure produced of this kind air spring and F3 power are the constant doubling-press relations.
As shown in Figure 1, this power value line of F1 is the support force that changes with object displacement, and to be that object is on the throne move past object vertical center of gravity power+outer active force in the journey to F3, and this outer active force also just changes special piston present situation power.
Description of drawings
Fig. 1 is the variation diagram of power value of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a piston assembly enlarged view of the present invention.
Embodiment
As shown in Figure 2, the constant spring of this multiplication of voltage power is formed by connecting by air spring sealing system 2 and piston assembly 3, cylinder body 4 by piston rod 1.Above-mentioned as shown in Figure 3 piston assembly 3 by gland behind the piston 5, constant force spring 6, rush down gland 7, bipyramid piston master core 8 and piston before compressing tablet 9 tighten together according to the order of sequence, compress by gland nut 12 and form.
Described O type circle 10 compressing tablet 9 and rush down 7 semifloatings of gland and be tightly connected before piston makes to form well sealing between the compressing tablet 9 before gland 5 behind the piston of piston rod and piston assembly, bipyramid piston master core 8, the piston like this.Move downward when piston rod is stressed, at this moment O type circle 10 is to rely on to rush down gland 7, has formed simultaneously moment to seal the state of building the pressure fully under the effect of constant force spring 6, and the power value of the above constant force spring is to decide by perseverance times resistance size; When outer active force added that center of gravity weight was gravity greater than the power of air spring bearing pressure Fx+ constant force spring 6 at this moment at that time by thing, air spring can carry out stroke adjustment.Because back group of power value is during greater than last group, gland 7 is rushed down in the 10 stressed promotions of O type circle, and has just produced the release gap between the bipyramid piston master core 8, has satisfied the condition that constant doubling-press resistance gas spring is regulated.Back stifled 11 and cylinder body 4 weld together has just formed the airtight cylinder body of air spring.

Claims (2)

1. pressure-doubling constant-damping force gas spring, be formed by connecting by air spring sealing system and cylinder body by piston assembly, it is characterized in that: described piston assembly by piston after gland (5), constant force spring (6), rush down that compressing tablet (10) tightens together according to the order of sequence before gland (7), bipyramid piston master core (8) and the piston, compress by gland nut to form.

2. a kind of pressure-doubling constant-damping force gas spring according to claim 1 is characterized in that: described O type circle (9) compressing tablet (10) and rush down between gland (7) the semifloating sealing before piston.