CN209100544U - A kind of vibration damper for vehicle - Google Patents

Abstract

The utility model relates to damper technical fields, in particular to a kind of vibration damper for vehicle, including outer cylinder, breeches pipe, outer cylinder end cap and breeches pipe end cap, the outer cylinder end cap is fixedly connected with outer cylinder bottom end, the breeches pipe end cap is fixedly connected with breeches pipe bottom end, it further include the sliding block for being slidably connected at outer cylinder and breeches pipe inner wall simultaneously, elastic component one is fixedly connected between the sliding block and outer cylinder end cap, elastic component two is fixedly connected between the sliding block and breeches pipe end cap, the elastic component one is identical with the coefficient of elasticity of elastic component two.The problem of when the utility model is to solve shock absorber in the prior art, the outer cylinder and breeches pipe coaxiality error of damper increase, and damping effect is caused to reduce.

Description

A kind of vibration damper for vehicle

Technical field

The utility model relates to damper technical fields, specifically disclose a kind of vibration damper for vehicle.

Background technique

Damper be for inhibit after spring shock-absorbing rebound when concussion and from the impact on road surface.It is widely used in vehicle such as Automobile, motorcycle, for accelerate vehicle frame and body vibrations decaying, to improve ride of vehicle.Passing through uneven road surface When, although shock-absorbing spring can filter the vibration on road surface, spring itself also has reciprocating motion, and damper is exactly for pressing down Make this spring jump.

Damper can be divided into front damper and rear shock absorber, Patent No. in existing design according to installation site point The Chinese patent of CN105564571A discloses a kind of front damper of motorcycle, including outer cylinder, front fork tube, end cap, positioning pipe and Damping spring, positioning pipe upper end are fixed on the end cap of outer cylinder, and lower end penetrates in front fork tube, and the lower end setting of positioning pipe With front fork inside pipe wall matched piston, it is provided with damping spring between front fork tube inner piston and front fork pipe end-cap, on outer cylinder End is connected on vehicle frame, and front fork tube lower end is connected on axletree；The structural elements are few, assembling easy to process, and damping property Can be good, it can effectively absorb vibration and impact from road surface.

But the structure there is problems:

When damper is in rapidly tensional state, with outer cylinder between breeches pipe mutually with a distance from progressively longer, outer cylinder The contact length of the length of the working cylinder formed with breeches pipe, front fork tube and outer cylinder is shorter, is more easy to appear front fork tube and outer Cylinder coaxiality error increases, so that frictional force when front fork tube and outer cylinder move toward one another increases, gently then causes front fork tube Abrasion or deformation, damping effect that is heavy then influencing entire damper.

When damper is in rapidly compressive state, breeches pipe is quickly moved toward one another with outer cylinder, and breeches pipe hits outer cylinder end cap, Form the destruction to outer cylinder end cap.

Utility model content

The utility model is intended to provide a kind of vibration damper for vehicle, when solving shock absorber in the prior art, subtracts The problem of outer cylinder and breeches pipe coaxiality error for shaking device increase, damping effect are caused to reduce.

In order to achieve the above object, the embodiment of the utility model are as follows:

Vibration damper for vehicle, including outer cylinder, breeches pipe, outer cylinder end cap and breeches pipe end cap, the outer cylinder end cap and outer cylinder bottom end It is fixedly connected, the breeches pipe end cap is fixedly connected with breeches pipe bottom end, further includes being slidably connected at outer cylinder and breeches pipe inner wall simultaneously Sliding block is fixedly connected with elastic component one, is fixedly connected between the sliding block and breeches pipe end cap between the sliding block and outer cylinder end cap Flexible part two, the elastic component one are identical with the coefficient of elasticity of elastic component two.

When damper is in rapidly compressive state, breeches pipe is moved toward one another with outer cylinder, two quilt of elastic component one and elastic component It compresses and accumulates elastic potential energy, for the damper rapidly compressed, on the one hand, play the effect of auxiliary damping；On the other hand, The presence of elastic component one makes under rapidly compressive state, and breeches pipe will not directly impinge on the end cap of outer cylinder, is formed to outer cylinder The destruction of end cap, but directly by elastic component one elasticity gradually buffer, compared with the prior art in not set Anti-bumping protection The case where, the program can play auxiliary buffer function and play the role of protective device.

When damper is in rapidly tensional state, breeches pipe is done mutually with outer cylinder from movement, and the length of working cylinder is elongated, this When, because sliding block both ends are held by the identical elastic component one of coefficient of elasticity and elastic component two, thus elastic component one and elastic component two are drawn The length stretched is identical, so that being always positioned at the medium position of working cylinder under the connection of sliding block and two elastic components, sliding block was both slided It is connected to outer cylinder, and the breeches pipe that is slidably connected, thus sliding block plays coaxial and guiding role to outer cylinder and breeches pipe always；Compared to The case where coaxial error becomes larger when working cylinder length is excessive in the prior art, program sliding block and elastic component one and elastic component two In the presence of so that existing always to the coaxial and guiding role of breeches pipe and outer cylinder, and then reducing breeches pipe during shock absorber The case where becoming larger with outer cylinder coaxiality error improves making for damper the case where further reducing breeches pipe abrasion or deform With service life and damping effect.

Further, the sliding block includes sliding block one, sliding block two and connecting cylinder, and the sliding block one is slidably connected in outer cylinder Wall, the sliding block two are slidably connected at the inner wall of breeches pipe, and the connecting cylinder and breeches pipe, outer cylinder are coaxial, the sliding block one and sliding block Two are detachably connected on the axial ends of connecting cylinder respectively, are in I-shaped after the sliding block one, sliding block two and connecting cylinder interconnection Type.

I-shaped sliding block makes the contact surface of sliding block and outer cylinder and breeches pipe only on sliding block one and sliding block two, and contact surface subtracts The abrasion of sliding block is advantageously reduced less；This outer slide one and sliding block two are detachably connected on connecting cylinder, so that sliding block one and cunning Block two can be replaced individually, and maintenance cost is reduced.

Further, the outer cylinder end cap is equipped with blind hole, and the blind hole internal thread connects hollow posts, the outer cylinder end cap and outer Cylinder is threadedly coupled.

Further, the guide sleeve in ladder is fixedly connected on the breeches pipe end cap, the guide sleeve is equipped with multi-diameter shaft one With multi-diameter shaft two, the multi-diameter shaft one offsets with breeches pipe inner wall, and the multi-diameter shaft two is threaded with guide post, the guide post It can be covered with hollow posts and into connecting cylinder.

The presence of hollow posts and guide post reinforces the concentricity of breeches pipe and outer cylinder further, and in damper When being compressed, hollow posts and guide post can cover and into connecting cylinder, not influence the active strokes of damper.

Further, dust cover is connected in the middle part of the outer cylinder and breeches pipe；Dust cover rise dustproof effect, avoid dust or its He enters directly into working cylinder minute impurities.

Further, floating piston one, the elastic component two and guide sleeve are equipped between the elastic component one and outer cylinder end cap Between be equipped with floating piston two, between the sliding block one and sliding block two be equipped with floating piston three, the floating piston one, float live The material of plug two and floating piston three is elastic rubber.

Floating piston one, floating piston two and three one side of floating piston of rubber material play buffer function, another party Face can change position with the variation of volume and working fluid density in working cylinder because three floating pistons are in quick condition It sets, is further conducive to buffer.

Further, several apertures are equipped on the side wall of the connecting cylinder, hollow posts and guide post；Aperture there are advantageous In the flowing of working fluid in working cylinder.

Detailed description of the invention

Fig. 1 is the structure sectional view of the utility model embodiment.

Specific embodiment

It is further described below by specific embodiment:

Appended drawing reference in Figure of description includes: outer cylinder 1, breeches pipe 2, outer cylinder end cap 3, breeches pipe end cap 4, sliding block 5, spring One 6, spring 27, sliding block 1, sliding block 2 52, connecting cylinder 53, blind hole 31, hollow posts 8, guide sleeve 9, multi-diameter shaft 1, rank Terraced axis 2 92, guide post 10, dust cover 11, floating piston 1, floating piston 2 13, floating piston 3 14.

The present embodiment is substantially as shown in Figure 1:

A kind of vibration damper for vehicle, including outer cylinder 1, breeches pipe 2, outer cylinder end cap 3, breeches pipe end cap 4 and sliding block 5, outer cylinder end cap 3 It is fixedly connected with the bottom end of outer cylinder 1, breeches pipe end cap 4 is fixedly connected with the bottom end of breeches pipe 2, and sliding block 5 is slidably connected at outer cylinder 1 simultaneously With the inner wall of breeches pipe 2, spring 1 is fixedly connected between sliding block 5 and outer cylinder end cap 3, it is fixed between sliding block 5 and breeches pipe end cap 4 It is connected with spring 27, spring 1 is identical with the coefficient of elasticity of spring 27.

Sliding block 5 includes sliding block 1, sliding block 2 52 and connecting cylinder 53, and sliding block 1 is slidably connected at the inner wall of outer cylinder 1, sliding Block 2 52 is slidably connected at the inner wall of breeches pipe 2, and connecting cylinder 53 and breeches pipe 2, outer cylinder 1 are coaxial, and sliding block 1 and sliding block 2 52 are distinguished It is threaded in the upper/lower terminal of connecting cylinder 53, in I-shaped after sliding block 1, sliding block 2 52 and the interconnection of connecting cylinder 53.

Outer cylinder end cap 3 is equipped with blind hole 31, and 31 internal screw thread of blind hole connects hollow posts 8, and outer cylinder end cap 3 is threadedly coupled with outer cylinder 1.

Stepped guide sleeve 9 is threaded on breeches pipe end cap 4, guide sleeve 9 is equipped with multi-diameter shaft 1 and multi-diameter shaft 2 92, multi-diameter shaft 1 and the inner wall of breeches pipe 2 offset, and multi-diameter shaft 2 92 is threaded with guide post 10, guide post 10 and hollow Column 8 can cover and into connecting cylinder 53.

The middle part of outer cylinder 1 and breeches pipe 2 is connected with dust cover 11.

It is equipped with floating piston 1 between spring 1 and outer cylinder end cap 3, is equipped with to float between spring 27 and guide sleeve 9 and live 2 13 are filled in, floating piston 3 14, floating piston 1, floating piston 2 13 and floating are equipped between sliding block 1 and sliding block 2 52 The material of piston 3 14 is elastic rubber.

Several apertures are equipped on the side wall of connecting cylinder 53, hollow posts 8 and guide post 10.

Specific implementation process is as follows:

When damper is in rapidly compressive state, breeches pipe 2 is moved toward one another with outer cylinder 1,27 quilt of spring 1 and spring It compresses and accumulates elastic potential energy, for the damper rapidly compressed, on the one hand, play the effect of auxiliary damping；On the other hand, The presence of spring 1 makes under rapidly compressive state, and breeches pipe 2 is when rapidly mobile to 3 direction of outer cylinder end cap, generated punching It hits and major part is first absorbed by spring 1, then remaining fraction is absorbed by floating piston 1, thus reach on outer cylinder end cap 3 Impact force it is minimum, will not influence intensity and rigidity that outer cylinder end cap 3 is connect with outer cylinder 1, protection played to entire damper Effect.

When damper is in rapidly tensional state, breeches pipe 2 is done mutually with outer cylinder 1 from movement, and the length of working cylinder is elongated, At this point, because 5 both ends of sliding block are by the identical spring 1 of coefficient of elasticity and the pulling of spring 27, thus spring 1 and spring 27 stretch Length it is identical so that be always positioned at the medium position of working cylinder under the connection of sliding block 5 and two springs, the sliding of sliding block 1 connects Then outer cylinder 1, sliding block 2 52 are slidably connected breeches pipe 2, and connecting cylinder 53 and outer cylinder 1, breeches pipe 2 are coaxial, and connecting cylinder 53 is upper and lower Both ends are threadedly coupled sliding block 1 and sliding block 2 52 respectively, thus sliding block 5 plays coaxial and guiding to outer cylinder 1 and breeches pipe 2 always Effect, and then reduce the case where breeches pipe 2 and 1 coaxiality error of outer cylinder become larger during shock absorber, it further reduces The case where abrasion of breeches pipe 2 or deformation, improve the service life and damping effect of damper.

Connection between sliding block 1, sliding block 2 52 and connecting cylinder 53 formed it is I-shaped so that outer cylinder 1 and breeches pipe 2 For contact surface only on sliding block 1 and sliding block 2 52, contact surface reduces the abrasion for advantageously reducing sliding block 5；This one 51 He of outer slide Sliding block 2 52 is threaded on connecting cylinder 53, and sliding block 1 and sliding block 2 52 are individually replaced, reduced Maintenance cost.

The presence of hollow posts 8 and guide post 10 reinforces breeches pipe 2 and the concentricity of outer cylinder 1 further, and When damper is compressed, hollow posts 8 and guide post 10 can cover and into connecting cylinder 53, not influence the active strokes of damper.

Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence The effect and patent practicability that the utility model is implemented.

Claims (7)

1. a kind of vibration damper for vehicle, including outer cylinder, breeches pipe, outer cylinder end cap and breeches pipe end cap, the outer cylinder end cap and outer cylinder bottom End is fixedly connected, and the breeches pipe end cap is fixedly connected with breeches pipe bottom end, it is characterised in that: further includes being slidably connected at outer cylinder simultaneously With the sliding block of breeches pipe inner wall, elastic component one, the sliding block and breeches pipe end cap are fixedly connected between the sliding block and outer cylinder end cap Between be fixedly connected with elastic component two, the elastic component one is identical with the coefficient of elasticity of elastic component two.

2. vibration damper for vehicle according to claim 1, it is characterised in that: the sliding block includes sliding block one, two and of sliding block Connecting cylinder, the sliding block one are slidably connected at outer tube inner wall, and the sliding block two is slidably connected at the inner wall of breeches pipe, the connecting cylinder Coaxial with breeches pipe, outer cylinder, the sliding block one and sliding block two are detachably connected on the axial ends of connecting cylinder, the sliding block respectively One, in I-shaped after sliding block two and connecting cylinder are connected with each other.

3. vibration damper for vehicle according to claim 2, it is characterised in that: the outer cylinder end cap is equipped with blind hole, described blind Hole internal screw thread connects hollow posts, and the outer cylinder end cap is threadedly coupled with outer cylinder.

4. vibration damper for vehicle according to claim 3, it is characterised in that: be fixedly connected on the breeches pipe end cap in rank The guide sleeve of ladder, the guide sleeve are equipped with multi-diameter shaft one and multi-diameter shaft two, and the multi-diameter shaft one offsets with breeches pipe inner wall, the rank Terraced axis two is threaded with guide post, and the guide post and hollow posts can cover and into connecting cylinders.

5. vibration damper for vehicle according to claim 4, it is characterised in that: be connected in the middle part of the outer cylinder and breeches pipe anti- Dust hood.

6. vibration damper for vehicle according to claim 4, it is characterised in that: set between the elastic component one and outer cylinder end cap There is floating piston one, floating piston two is equipped between the elastic component two and guide sleeve, is set between the sliding block one and sliding block two There is floating piston three, the material of the floating piston one, floating piston two and floating piston three is elastic rubber.

7. vibration damper for vehicle according to claim 4, it is characterised in that: the connecting cylinder, hollow posts and guide post Several apertures are equipped on side wall.