CN213541149U

CN213541149U - Novel automobile shock absorber ware

Info

Publication number: CN213541149U
Application number: CN202022647760.5U
Authority: CN
Inventors: 柳平波
Original assignee: Jinbo Auto Parts Co Ltd
Current assignee: Jinbo Auto Parts Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-06-25
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a novel automobile shock absorber, which comprises a cylinder barrel, wherein a working chamber is formed in the cylinder barrel in a hollow manner, a piston rod is inserted on the cylinder barrel, the top of the piston rod extends outside the cylinder barrel, the bottom of the piston rod is inserted in the working cavity, the bottom of the piston rod is sleeved with a piston and also comprises a stroke limiting device which is always positioned in the working cavity, the stroke limiting device comprises a first stop piston and a second stop piston, the first stop piston and the second stop piston divide the stroke limiting device into a first chamber and a second chamber, the cavity wall of the working cavity is provided with a plurality of limiting bulges from top to bottom, the side parts of the first stop piston and the second stop piston are positioned between the two adjacent limiting bulges, and the limiting bulges limit the strokes of the first stop piston and the second stop piston.

Description

Novel automobile shock absorber ware

Technical Field

The utility model relates to a bumper shock absorber technical field especially relates to a novel automobile shock absorber ware.

Background

In the prior art, the shock absorber is composed of a cylinder barrel and a piston, liquid or gaseous shock absorption media such as nitrogen or damping liquid are filled in the cylinder barrel, one section of a piston rod is inserted into the cylinder barrel, the other end of the piston rod is fixed on a vehicle body, and when the piston moves up and down in the cylinder barrel, vibration energy can be converted into heat energy, so that attenuation is performed.

However, in the conventional automobile shock absorber, once the vehicle rolls to a large extent during running, the stroke of the piston rod is easily caused to enter a limit value, and when the stroke of the piston rod reaches the limit value, if the piston is continuously pressed inwards, the reverse resistance force applied to the piston is too large, so that the piston is deformed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a novel automobile shock absorber ware that can prevent that the piston from taking place to warp is provided to above-mentioned technical current situation.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a novel automobile shock absorber comprises a cylinder barrel, a working chamber is formed in the cylinder barrel in a hollow mode, a piston rod is inserted into the cylinder barrel, the top of the piston rod extends out of the cylinder barrel, the bottom of the piston rod is inserted into the working chamber, a piston is sleeved at the bottom of the piston rod, the novel automobile shock absorber further comprises a stroke limiting device which is always located in the working chamber, the stroke limiting device comprises a first stop piston and a second stop piston, the first stop piston and the second stop piston are sleeved on the piston rod, a stop piston hole is formed in the top end of the cylinder barrel, the upper portion of the first stop piston is located outside the working chamber and attached to the top end of the cylinder barrel, the lower portion of the first stop piston penetrates through the stop piston hole to extend into the working chamber, and the first stop piston and the second stop piston divide the stroke limiting device into a first chamber and a second chamber, a plurality of limiting bulges are arranged on the wall of the working cavity from top to bottom, the side parts of the first stop piston and the second stop piston are positioned between the two adjacent limiting bulges, and the limiting bulges limit the strokes of the first stop piston and the second stop piston;

the working chamber is separated into upper air chamber and lower air chamber by the baffle that floats, the cylinder is corresponding the air inlet has been seted up on the lateral wall of air chamber down, air inlet and outside air supply intercommunication, high-pressure nitrogen gas can pass through the air inlet fills into air chamber down be formed with the draw-in groove on the baffle the piston bottom is formed with the lug, the lug can be blocked in the draw-in groove.

As an improvement of the utility model, the periphery of the floating partition plate is formed with a seal groove, a seal ring is embedded in the seal groove, the floating partition plate can be followed the chamber wall of the working chamber slides.

As the utility model discloses an it is preferred piston rod upper portion cover is equipped with the crash pad, the crash pad is made by rubber materials.

As a specific technical scheme of the utility model, the bottom of piston rod is provided with lock nut, the piston passes through lock nut fixes the bottom of piston rod.

Compared with the prior art, the utility model has the advantages of: through set up high-pressure air chamber in the working chamber, when the piston marchs to the baffle that floats, can utilize the block relation card of lug and draw-in groove on the baffle that floats, continue to drive from this and float the baffle and feed downwards, it has high-pressure nitrogen gas to fill in high-pressure air chamber, when the baffle that floats when moving downwards, can compress down the volume of air chamber, make the atmospheric pressure increase of air chamber down, because the resistance that the baffle that floats continued to receive downwards can be bigger and bigger, until the impact force is equal with the atmospheric pressure of air chamber down, reach a balanced state, this high-pressure air chamber's setting is on the basis that does not increase the cylinder volume, the shock attenuation stroke has been prolonged by a wide margin, and can.

Drawings

Fig. 1 is the embodiment of the present invention provides a structural schematic diagram of a novel automobile shock absorber.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in the attached drawing, this embodiment is a novel automobile shock absorber ware, including cylinder 1, the inside cavity of cylinder is formed with working chamber 2, it has piston rod 3 to peg graft on the cylinder, the upper end of piston rod is connected on the vehicle, when the vehicle takes place to jolt the vibration, can drive the piston rod and reciprocate, peg graft in the working chamber bottom of piston rod, in order to carry out the shock attenuation, can generally fill liquid damping liquid or the high-pressure gas of liquid state in the working chamber as shock attenuation medium, bottom cover at the piston rod is equipped with piston 4, the piston outer lane is wrapping up rubber, the size of piston is close with the internal diameter of working chamber, make the piston when removing, can compress the inside shock attenuation medium of working chamber, shock attenuation medium provides the reverse resistance to the piston simultaneously, from this consumption strikes kinetic energy, reach the absorbing purpose. The top of the piston is sleeved with an anti-collision pad 19 which is made of rubber materials, the bottom of the piston rod is provided with a locking nut 20, and the piston is fixed at the bottom of the piston rod through the locking nut.

The novel automobile shock absorber of this embodiment is still including being located all the time stroke stop device 5 in the working chamber, and stroke stop device includes first stop piston 6 and second stop piston 7, and first stop piston and second stop piston all overlap and establish on the piston rod, have seted up stop piston hole 8 on the top of cylinder, the upper portion of first stop piston is located the outside of working chamber is leaned on and is leaned on the top of cylinder, the lower part of first stop piston passes the stop piston hole extends in the working chamber, first stop piston with the second stop piston will stroke stop device separates into first cavity 9 and second cavity 10 be provided with a plurality of spacing archs 11 on the chamber wall of working chamber from top to bottom, and the lateral part of first stop piston and second stop piston is located between two adjacent spacing archs, by spacing archs to first stop piston, The stroke of the second stop piston is limited.

First locking piston and second locking piston's effect is more steady when making the piston rod reset, and the working chamber is separated into upper air chamber 12 and lower air chamber 13 by floating partition 15, and first locking piston and second locking piston are located upper air chamber, the cylinder is corresponding air inlet 14 has been seted up on the lateral wall of lower air chamber, air inlet and outside air supply intercommunication, high-pressure nitrogen gas can pass through the air inlet fills lower air chamber be formed with draw-in groove 16 on the floating partition the piston bottom is formed with lug 17, the lug can be gone into in the draw-in groove.

In addition, in order to enhance the air tightness of the floating piston, a sealing groove is formed on the periphery of the floating partition plate, a sealing ring 18 is embedded in the sealing groove, and the floating partition plate can slide along the cavity wall of the working cavity.

The automobile shock absorber ware shock attenuation principle of this embodiment is as follows, when the vehicle takes place acutely when vibrations at the road surface of jolting, the vehicle can transmit the impact force that the vibration produced for the piston rod, promote the piston rod downstream by outside impact force, when the piston rod downstream, can drive the damping medium in the piston extrusion working chamber downwards, make the damping medium by first cavity, the second cavity flows towards the last air chamber of piston below, when vibration amplitude surpasss the extreme value, can promote the piston rod card to go into the baffle that floats, drive the baffle by the piston rod and descend, the volume of air chamber under the extrusion, make down the air chamber atmospheric pressure increase, thereby carry out dual shock attenuation.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel automobile shock absorber ware, including the cylinder, the inside cavity of cylinder is formed with the working chamber it has the piston rod to peg graft on the cylinder, the piston rod top extends in the outside of cylinder, peg graft in the bottom of piston rod in the working chamber the bottom cover of piston rod is equipped with piston, its characterized in that: the stroke limiting device comprises a first stop piston and a second stop piston, the first stop piston and the second stop piston are sleeved on the piston rod, a stop piston hole is formed in the top end of the cylinder barrel, the upper portion of the first stop piston is located outside the working cavity and attached to the top end of the cylinder barrel, the lower portion of the first stop piston penetrates through the stop piston hole and extends into the working cavity, the stroke limiting device is divided into a first chamber and a second chamber by the first stop piston and the second stop piston, a plurality of limiting protrusions are arranged on the cavity wall of the working cavity from top to bottom, the side portions of the first stop piston and the second stop piston are located between two adjacent limiting protrusions, and the limiting protrusions are used for limiting the first stop piston, The stroke of the second stop piston is limited;

2. The new shock absorber for automobiles according to claim 1, characterized in that: the periphery of the floating partition plate is provided with a sealing groove, a sealing ring is embedded in the sealing groove, and the floating partition plate can slide along the cavity wall of the working cavity.

3. The new shock absorber for automobiles according to claim 1, characterized in that: the upper portion of the piston rod is sleeved with an anti-collision pad, and the anti-collision pad is made of rubber materials.

4. The new shock absorber for automobiles according to claim 1, characterized in that: and a locking nut is arranged at the bottom of the piston rod, and the piston is fixed at the bottom of the piston rod through the locking nut.