CN202500937U

CN202500937U - Nitrogen spring shock absorber

Info

Publication number: CN202500937U
Application number: CN2012200873288U
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: 2012-10-24
Anticipated expiration: 2022-03-09

Abstract

A nitrogen spring shock absorber comprises a common nitrogen shock absorber composed of a dust shield, a piston rod, a guide seat, a piston and an air reservoir cylinder. A working cylinder is equipped inside the air reservoir 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 through 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 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 equipped between the guide seat and each step of the lower sleeve pipe. The air bags make the upper chamber of the air reservoir cylinder divided into an outer chamber and an inner chamber. Nitrogen is filled inside the outer chamber. Rubber sealing rings are equipped 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 in the utility model 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. The damage to an automobile is alleviated.

Description

A kind of nitrogen spring vibration damper

Technical field

The utility model relates to a kind of vibration damper, especially a kind of nitrogen spring vibration damper.

Background technique

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

Summary of the invention

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

The utility model solves the technological scheme that its technical problem adopted: a kind of nitrogen spring vibration damper; Comprise the band gas storage cylinder barrel of hanger down; 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, and the lower end of work cylinder barrel is with lower sleeve; The work cylinder barrel communicates with the pore of lower sleeve; The pore of lower sleeve is through the chamber wall shutoff of gas storage cylinder barrel, and 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 work cylinder barrel; 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, and 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: the nitrogen spring vibration damper receives when impacting, and through changing the shape of buffer air bag, impels the chamber of lower sleeve to tighten; Simultaneously, strengthened the gap of lower sleeve and air reservoir tube bottom, make upper and lower and work cylinder barrel chamber between air-flow change; The energy that hits that moment is dashed carries out shock-absorbing, and its damping effect is improved, and has improved damping performance; Increased comfort level, reduced infringement automobile.

Description of drawings

Fig. 1 is the longitudinal section of the utility model.

Embodiment

In Fig. 1, a kind of nitrogen spring vibration damper comprises the band gas storage cylinder barrel 1 of hanger down; Guide holder 2 is equipped with in the upper end of gas storage cylinder barrel 1, and the gas storage cylinder barrel is provided with work cylinder barrel 3 in 1 chamber, and the lower end of work cylinder barrel 3 is with lower sleeve 4; Work cylinder barrel 3 and lower sleeve 4 Spielpassung; Work cylinder barrel 3 communicates with the pore of lower sleeve 4, and the pore of lower sleeve is through the chamber wall shutoff of gas storage cylinder barrel 1, and the chamber wall of lower sleeve 4 extends upward to the middle-end of gas storage cylinder barrel 1; The upper end of lower sleeve 4 stretches out and forms step 5 and 1 sealing of gas storage cylinder barrel, makes the chamber of gas storage cylinder barrel 1 be divided into upper and lower chamber; 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, and rubber seal ring 9 is housed in the annular groove of piston 8, has 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 utility model adopts nitrogen, and the compressibility of gas obviously is superior to liquid state, and variation and the buffer air bag through abdominal cavity formula air-flow overcomes the moment impact energy again; Its damping effect is greatly improved; Improved damping performance, increased comfort level, reduced infringement automobile.

Claims

1. a nitrogen spring vibration damper comprises the band gas storage cylinder barrel of hanger down, and 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 of work cylinder barrel is with lower sleeve, and the work cylinder barrel communicates with the pore of lower sleeve, and the pore of lower sleeve is through 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 work cylinder barrel; 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, and 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.