CN103307165A

CN103307165A - Nitrogen spring shock absorber

Info

Publication number: CN103307165A
Application number: CN2012100612988A
Authority: CN
Inventors: 罗正德; 余香革; 王丛林
Original assignee: HUBEI XINGSHENG TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: HUBEI XINGSHENG TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2013-09-18

Abstract

A nitrogen spring shock absorber comprises an ordinary nitrogen shock absorber composed of a dust shield, a piston rod, a guide seat, a piston and an air reservoir cylinder, wherein the air reservoir cylinder is internally provided with a working cylinder; a lower sleeve pipe is sleeved on the lower end of the working cylinder; the working cylinder is communicated with air holes of the lower sleeve pipe; the air holes are plugged by a chamber wall of the air reservoir cylinder; the chamber wall of the lower sleeve pipe extends upwards to the middle end of the air reservoir cylinder; the upper end pipe wall of the lower sleeve pipe extends outwards and forms steps which seal the air reservoir cylinder and divide the chamber of the air reservoir cylinder into an upper chamber and a lower chamber; air bags are arranged between the guide seat and each step of the lower sleeve pipe; the air bags enable the upper chamber of the air reservoir cylinder to be divided into an outer chamber and an inner chamber; nitrogen is filled inside the outer chamber; and rubber sealing rings are arranged on the piston inside the working cylinder chamber. By changing the air bag shape to induce a change in air flows inside the upper chamber, the lower chamber and the chamber of the working cylinder, the nitrogen spring shock absorber provided by the invention is enabled to absorb shocks from instant impact energy, the damping effects are improved, the shock absorbing performances are enhanced, the comfort level is increased, and the damage to an automobile is reduced.

Description

A kind of nitrogen spring vibration damper

Technical field

The present invention relates to a kind of vibration damper, especially a kind of nitrogen spring vibration damper.

Background technique

Because it is medium that present employed automobile absorber mainly adopts fluid, by damping hole, when being subject to impacting, the variation of upper and lower cavity fluid realizes shock-absorbing.Because fluid is liquid, the distance between its molecule is shorter, when being subject to impacting, does not have compressibility, only has by the elasticity of damping hole and fluid self and controls shake frequently, impacts sense stronger, has reduced damping performance and comfort level.

Summary of the invention

The invention provides a kind of nitrogen spring vibration damper, not only improved damping performance and comfort level, also reduced the infringement to automobile.

The technical solution adopted for the present invention to solve the technical problems is: a kind of nitrogen spring vibration damper, the gas storage cylinder barrel that comprises the lower hanger of band, guide holder is equipped with in the upper end of gas storage cylinder barrel, it is characterized in that: the gas storage cylinder barrel is provided with the work cylinder barrel in the chamber, the lower end cover of work cylinder barrel has lower sleeve, the work cylinder barrel communicates with the pore of lower sleeve, the pore of lower sleeve is by the chamber wall shutoff of gas storage cylinder barrel, the upper end of lower sleeve stretches out and forms step and gas receiver sealing, makes the chamber of gas storage cylinder barrel be divided into upper chamber and lower chambers; Between the step of guide holder and lower sleeve buffer air bag is installed, buffer air bag makes the upper chamber of gas receiver be divided into outer chamber and inner cavity chamber, and nitrogen is housed in the outer chamber; Piston rod passes guide holder and is connected with the interior piston of cylinder barrel of working, in the annular groove of piston rubber seal ring is housed, have circular groove on the rubber seal ring, the endoporus of guide holder is equipped with wear ring and at least two seal rings, the piston pole socket is equipped with in the upper end of piston rod, be connected with dust-proof cover on the piston pole socket, Rubber shock-absorbing pad is housed in the dust-proof cover.

Beneficial effect: when the nitrogen spring vibration damper is subject to impacting, by changing the shape of buffer air bag, impel the chamber of lower sleeve to tighten; Simultaneously, strengthened lower sleeve and gas storage cylinder barrel the bottom the gap, make upper and lower and work cylinder barrel chamber between air-flow change, the energy that hits of punching carries out shock-absorbing to moment, and its damping effect is improved, and has improved damping performance, increase comfort level, reduced the infringement to automobile.

Description of drawings

Fig. 1 is longitudinal section of the present invention.

Embodiment

In Fig. 1, a kind of nitrogen spring vibration damper, the gas storage cylinder barrel 1 that comprises the lower hanger of band, guide holder 2 is equipped with in the upper end of gas storage cylinder barrel 1, the gas storage cylinder barrel is provided with work cylinder barrel 3 in 1 chamber, the lower end cover of work cylinder barrel 3 has lower sleeve 4, work cylinder barrel 3 and lower sleeve 4 Spielpassung, work cylinder barrel 3 communicates with the pore of lower sleeve 4, the pore of lower sleeve is by the chamber wall shutoff of gas storage cylinder barrel 1, the chamber wall of lower sleeve 4 extends upwardly to the middle-end of gas storage cylinder barrel 1, and the upper end of lower sleeve 4 stretches out and forms step 5 and 1 sealing of gas storage cylinder barrel, and the chamber of gas storage cylinder barrel 1 is divided into, lower chambers; Between the step 5 of guide holder 2 and lower sleeve 4 buffer air bag 6 is installed, the two ends of buffer air bag 6 are respectively at step 5 clampings on guide holder 2 and the lower sleeve 4, and buffer air bag 6 makes the upper chamber of gas receiver 1 be divided into outer, inner cavity chamber, and nitrogen is housed in the outer chamber; Piston rod 7 passes guide holder 2 and is connected with piston 8 in work cylinder barrel 3 chambeies, rubber seal ring 9 is housed in the annular groove of piston 8, have circular groove on the rubber seal ring 9, rubber seal ring 9 cooperates with the piston clearance, the endoporus of guide holder 8 is equipped with wear ring 10 and at least two seal rings 11, and stopper rod seat 12 is equipped with in the upper end of piston rod 7, is connected with dust-proof cover 13 on the piston pole socket and connects, dust-proof cover is provided with Rubber shock-absorbing pad 14 in 13 chambeies, and Rubber shock-absorbing pad 14 is connected with the chamber wall of dust-proof cover 13.

It is medium that the present invention adopts nitrogen, and the compressibility of gas obviously is better than liquid state, and variation and the buffer air bag by abdominal cavity formula air-flow overcomes the moment impact energy again, its damping effect is greatly improved, improve damping performance, increased comfort level, reduced the infringement to automobile.

Claims

1. nitrogen spring vibration damper, the gas storage cylinder barrel that comprises the lower hanger of band, guide holder is equipped with in the upper end of gas storage cylinder barrel, it is characterized in that: the gas storage cylinder barrel is provided with the work cylinder barrel in the chamber, the lower end cover of work cylinder barrel has lower sleeve, and the work cylinder barrel communicates with the pore of lower sleeve, and the pore of lower sleeve is by the chamber wall shutoff of gas storage cylinder barrel, the upper end of lower sleeve stretches out and forms step and gas receiver sealing, makes the chamber of gas storage cylinder barrel be divided into upper chamber and lower chambers; Between the step of guide holder and lower sleeve buffer air bag is installed, buffer air bag makes the upper chamber of gas receiver be divided into outer chamber and inner cavity chamber, and nitrogen is housed in the outer chamber; Piston rod passes guide holder and is connected with the interior piston of cylinder barrel of working, in the annular groove of piston rubber seal ring is housed, have circular groove on the rubber seal ring, the endoporus of guide holder is equipped with wear ring and at least two seal rings, the piston pole socket is equipped with in the upper end of piston rod, be connected with dust-proof cover on the piston pole socket, Rubber shock-absorbing pad is housed in the dust-proof cover.