CN208397196U - A kind of automobile absorber safeguard structure - Google Patents

Abstract

A kind of automobile absorber safeguard structure, including daming piston cylinder, daming piston bar, there are the sealing that diameter becomes smaller, the sealing circumferencial directions to be equipped with dust seal for daming piston cylinder front end；The front end that the daming piston bar stretches out is equipped with dust cover, and the dust cover be the open cylindrical shape in the front end closing of installation, rear end, and outer wall extends to the daming piston bar retracted orientation, covers to the daming piston cylinder and dust seal outside.The dust seal includes the U-type groove for being close to the sealing periphery and the O-ring being installed in the U-type groove notch.The automobile absorber safeguard structure of the utility model installs shield outside daming piston bar, dust seal is installed in daming piston cylinder front end, prevent sundries from entering daming piston bar surface by the collective effect of shield and dust seal, guarantee that oil sealing performance is unaffected, to extend product service life, product quality is improved.

Description

A kind of automobile absorber safeguard structure

Technical field

The utility model relates to automobile absorber field, more specifically to a kind of automobile absorber safeguard structure.

Background technique

Vehicle shock absorber protection is a ring vital to automobile suspension system service life.Suspension system is connection vehicle No matter the part of wheel and vehicle body, travel or stagnate, all easy to be come dust, gravel and water stain by road surface wind-force or splashing And other undesired erosions for damaging damper noumenon function, the substance in service life.It is most weak for damper to need most guarantor The part of shield is exactly shock absorber oil liquid sealing, because the oil liquid of damper inner cavity is the important medium of work.Once from oil sealing Mouth leakage, less serious case's performance section function are lost, heavy then defective shock absorber.However, causing the generation of this failure mode, most probable Reason is exactly extraneous gravel or biggish spot, by long-term accumulation, constantly accumulates and invades in oil seal lip or strong Row adherency is forfeiture the effect of normally generating oil film and frizing between oil sealing and piston rod gradually, with this on the piston rod Meanwhile the slave internal leakage of damping oil also gradually goes out.Therefore, damper professional designers can be in consideration of it, in order to anti- Protect sand and dust, usually using to material have plastics, rubber, rubber and plastic mix, metal etc., structure type is also diversity, Have straight barrel type, fold it is retractable.Being substantially all can use, but consider from cost performance angle, pursue high quality now In the efficient epoch, constantly revolutionary product, optimizes structure, promotes quality, and constantly bringing forth new ideas is the only way of our existence.

The patent of invention of Publication No. CN1079436A discloses a kind of air hanging device for car and air suspension system, should Device is protected on the outside of piston rod using protection cylinder, can prevent from entering piston rod surface compared with bigger material, but for compared with Small filtering foreign effect is unobvious.

Utility model content

The utility model provides a kind of automobile absorber safeguard structure, the utility model in view of the deficiencies of the prior art Automobile absorber safeguard structure shield is installed outside daming piston bar, daming piston cylinder front end install dust seal Part prevents sundries from entering daming piston bar surface, guarantees oil sealing performance not by the collective effect of shield and dust seal It is impacted, to extend product service life, improve product quality.

The specific technical solution of the utility model is as follows: a kind of automobile absorber safeguard structure, including daming piston cylinder, subtracts Piston rod is shaken, there are the sealing that diameter becomes smaller, the sealing circumferencial directions to be equipped with dust-proof for daming piston cylinder front end Sealing element；

The front end that the daming piston bar stretches out is equipped with dust cover, and the dust cover is the front end closing of installation, rear end Open cylindrical shape, and outer wall extends to the daming piston bar retracted orientation, covering to the daming piston cylinder and described On the outside of dust seal.

It is sealed between the daming piston cylinder and the daming piston bar by oil sealing, external impurities are accumulated in institute State daming piston bar surface enter at oil sealing easily cause damping oil leakage, therefore the daming piston bar periphery install institute Stating dust cover effectively can avoid sundries from entering, and extend the damper service life.

As the preferred of the utility model, the dust seal includes the U-type groove for being close to the sealing periphery With the O-ring being installed in the U-type groove notch.

As the preferred of the utility model, under the fully extended state of daming piston bar, the dust seal is located at In the dust cover coverage area.

As the preferred of the utility model, there are gaps between the dust cover and the O-ring, and gap is less than 1mm.

Being less than 1mm between the dust cover and the O-ring can effectively prevent most of sundries living into the damping Stopper rod surface.

As the preferred of the utility model, there are gaps between the dust cover and the daming piston cylinder, and between minimum Gap is less than 5mm.

Minimum clearance is less than 5mm and can prevent compared with described in bigger material entrance between the dust cover and the daming piston cylinder Daming piston bar surface, while avoiding damper overall volume larger.

As the preferred of the utility model, there are gas vents on the dust cover, are fully retracted in the daming piston bar Under state, the gas vent stretches out on direction in the daming piston bar to be located on front side of the O-ring.

When the gas vent is arranged on the dust cover can guarantee that accumulating sundries at the O-ring forms sealing, institute Stating daming piston bar can not also normally be stretched by effects of air pressure.

As the preferred of the utility model, the exhaust bore dia is 0.5mm ~ 1.5mm, and quantity is 2 ~ 20.

The exhaust bore dia is small, quantity can be avoided sundries more and enter in the dust cover.

As the preferred of the utility model, the dust seal is dust-proof including at least cooperating with the dust cover inner wall Circle.

Sealing can be formed completely with the dust cover using the dustband, preferably sundries is avoided to enter, and it is described Dust cover inner wall must have lower roughness, therefore be relatively suitble to using smart tube drawing.

As the preferred of the utility model, there are gas vents on the dust cover, are fully retracted in the daming piston bar Under state, the gas vent stretches out on direction in the daming piston bar to be located on front side of the dustband.

The dustband is fully sealed with the dust cover, therefore the dust cover needs to be arranged the gas vent and guarantees institute Daming piston bar is stated not stretched normally by effects of air pressure.

As the preferred of the utility model, the exhaust bore dia is 0.6mm ~ 1.5mm, and quantity is 4 ~ 20.

The exhaust bore dia is small, quantity can be avoided sundries more and enter in the dust cover；And due to the dustband Everywhere in sealing, the gas vent ventilatory capacity is bigger when needing than using the O-ring.

In conclusion the utility model has the following beneficial effects:

The automobile absorber safeguard structure of the utility model installs shield outside daming piston bar, in daming piston cylinder Dust seal is installed in front end, prevents sundries from entering daming piston bar table by the collective effect of shield and dust seal Face guarantees that oil sealing performance is unaffected, to extend product service life, improves product quality.

Detailed description of the invention

Fig. 1 is sectional view when the utility model automobile absorber safeguard structure piston rod is fully retracted；

Fig. 2 is sectional view when the utility model automobile absorber safeguard structure piston rod is fully extended；

Fig. 3 is the partial enlarged view at 1 dust seal of the utility model automobile absorber safeguard structure embodiment；

Fig. 4 is the partial enlarged view at 2 dust seal of the utility model automobile absorber safeguard structure embodiment；

In figure, daming piston cylinder (1) sealing (11) daming piston bar (2) dust seal (3) U-type groove (31) O-ring (32) dustband (33) dust cover (4) gas vent (41).

Specific embodiment

Below in conjunction with attached drawing, by specific embodiment, the utility model is described in further detail.

As shown in Figure 1, Figure 2, a kind of automobile absorber safeguard structure, including daming piston cylinder 1, daming piston bar 2, daming piston There are the sealing 11 that diameter becomes smaller, 11 circumferencial directions of sealing to be equipped with dust seal 3 for 1 front end of cylinder；

The front end that daming piston bar 2 stretches out is equipped with dust cover 4, and dust cover 4 is that the front end of installation is closed, rear end opens Cylindrical shape, and outer wall extends to 2 retracted orientation of daming piston bar, 3 outside of covering to daming piston cylinder 1 and dust seal.

It is sealed between daming piston cylinder 1 and daming piston bar 2 by oil sealing, external impurities are accumulated in daming piston 2 surface of bar, which enters at oil sealing, easily causes damping oil leakage, therefore can have in 2 periphery of daming piston bar installation dust cover 4 Effect avoids sundries from entering, and extends the damper service life.

Embodiment 1:

As shown in Figure 1, Figure 2, Fig. 3, dust seal 3 include being close to the U-type groove 31 of 11 periphery of sealing and being installed on U-shaped O-ring 32 in 31 notch of slot.

Such as Fig. 2, under the fully extended state of daming piston bar 2, dust seal 3 is located in 4 coverage area of dust cover.

There are gaps between dust cover 4 and O-ring 32, and gap is less than 1mm.

Being less than 1mm between dust cover 4 and O-ring 32 can effectively prevent most of sundries to enter 2 surface of daming piston bar.

There are gaps between dust cover 4 and daming piston cylinder 1, and minimum clearance is less than 5mm.

Minimum clearance is less than 5mm and can prevent from entering daming piston bar compared with bigger material between dust cover 4 and daming piston cylinder 1 2 surfaces, while avoiding damper overall volume larger.

Such as Fig. 1, there are gas vents 41 on dust cover 4, and under 2 fully retracted state of daming piston bar, gas vent 41 is subtracting It shakes piston rod 2 and stretches out on direction and be located at 32 front side of O-ring.

When gas vent 41 is arranged on dust cover 4 can guarantee that accumulating sundries at O-ring 32 forms sealing, daming piston bar 2 can not also normally be stretched by effects of air pressure.

41 diameter of gas vent is 0.5mm ~ 1.5mm, and quantity is 2 ~ 20.

41 diameter of gas vent is small, quantity can be avoided sundries more and enter in dust cover 4.

Embodiment 2:

Such as Fig. 4, dust seal 3 includes at least the dustband 33 cooperated with 4 inner wall of dust cover.

It can be formed completely and be sealed with dust cover 4 using dustband 33, preferably sundries be avoided to enter, and in dust cover 4 Wall must have lower roughness, therefore be relatively suitble to using smart tube drawing.

There are gas vents 41 on dust cover 4, and under 2 fully retracted state of daming piston bar, gas vent 41 is in daming piston Bar 2, which stretches out on direction, is located at 33 front side of dustband.

Dustband 33 is fully sealed with dust cover 4, therefore dust cover 4 needs to be arranged gas vent 41 and guarantees daming piston bar 2 It is not stretched normally by effects of air pressure.

41 diameter of gas vent is 0.6mm ~ 1.5mm, and quantity is 4 ~ 20.

41 diameter of gas vent is small, quantity can be avoided sundries more and enter in dust cover 4；And since dustband 33 is everywhere in close Envelope, 41 ventilatory capacity of gas vent are bigger when needing than using O-ring 32.

Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this The conception and scope of type is defined.Without departing from the design concept of the present utility model, ordinary people in the field is to this The all variations and modifications that the technical solution of utility model is made, should fall within the protection scope of the present utility model, this is practical Novel claimed technology contents, are all described in the claims.

Claims (10)

1. a kind of automobile absorber safeguard structure, including daming piston cylinder (1), daming piston bar (2), it is characterised in that: described The sealing (11) that daming piston cylinder (1) front end becomes smaller there are diameter, sealing (11) circumferencial direction are equipped with dust-proof close Sealing (3)；

The front end that the daming piston bar (2) is stretched out is equipped with dust cover (4), the dust cover (4) be the front end of installation close, The open cylindrical shape in rear end, and outer wall extends to daming piston bar (2) retracted orientation, covering to the daming piston cylinder (1) and on the outside of the dust seal (3).

2. a kind of automobile absorber safeguard structure according to claim 1, it is characterised in that: the dust seal (3) Including the O-ring being close to the U-type groove (31) of sealing (11) periphery and being installed in the U-type groove (31) notch (32).

3. a kind of automobile absorber safeguard structure according to claim 2, it is characterised in that: the daming piston bar (2) Under fully extended state, the dust seal (3) is located in the dust cover (4) coverage area.

4. a kind of automobile absorber safeguard structure according to claim 3, it is characterised in that: the dust cover (4) and institute It states between O-ring (32) there are gap, and gap is less than 1mm.

5. a kind of automobile absorber safeguard structure according to claim 3, it is characterised in that: the dust cover (4) and institute It states between daming piston cylinder (1) there are gap, and minimum clearance is less than 5mm.

6. a kind of automobile absorber safeguard structure according to claim 4 or 5, it is characterised in that: on the dust cover (4) There are gas vent (41), and under daming piston bar (2) fully retracted state, the gas vent (41) is in the daming piston Bar (2), which stretches out on direction, to be located on front side of the O-ring (32).

7. a kind of automobile absorber safeguard structure according to claim 6, it is characterised in that: gas vent (41) diameter For 0.5mm ~ 1.5mm, and quantity is 2 ~ 20.

8. a kind of automobile absorber safeguard structure according to claim 1, it is characterised in that: the dust seal (3) Including at least the dustband (33) cooperated with the dust cover (4) inner wall.

9. a kind of automobile absorber safeguard structure according to claim 8, it is characterised in that: deposited on the dust cover (4) In gas vent (41), under daming piston bar (2) fully retracted state, the gas vent (41) is in the daming piston bar (2) it stretches out on direction and is located on front side of the dustband (33).

10. a kind of automobile absorber safeguard structure according to claim 9, it is characterised in that: the gas vent (41) is straight Diameter is 0.6mm ~ 1.5mm, and quantity is 4 ~ 20.