CN212155618U - Dust cover of shock absorber - Google Patents
Dust cover of shock absorber Download PDFInfo
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- CN212155618U CN212155618U CN202020244988.7U CN202020244988U CN212155618U CN 212155618 U CN212155618 U CN 212155618U CN 202020244988 U CN202020244988 U CN 202020244988U CN 212155618 U CN212155618 U CN 212155618U
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- shock absorber
- cover body
- guide sleeve
- dust cover
- cover
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Abstract
The utility model discloses a shock absorber dust cover, which comprises a cover body, wherein the cover body is in a corrugated pipe shape; one end of the cover body is provided with a clamping sleeve, the other end of the cover body is provided with a guide sleeve, and a clamping groove is arranged in the guide sleeve; a felt ring is arranged in the guide sleeve, and an annular boss coaxial with the guide sleeve is arranged on the outer wall of the felt ring in the circumferential direction; the boss is clamped inside the clamping groove. The utility model provides a problem of the false oil leak of bumper shock absorber, have dustproof effectual, can eliminate false oil leak phenomenon, do benefit to the refrigerated advantage of workspace in the dust cover, be fit for being in the shock absorber of various operational environment and use.
Description
Technical Field
The utility model belongs to the technical field of the automobile shock attenuation and specifically relates to a can effectively solve dust cover of false oil leak of bumper shock absorber.
Background
Along with the development of science and technology and the improvement of the quality of life of people, people have higher requirements on the comfort level of automobiles, have new requirements on the vibration damping system of automobiles in the technical level, and the vibration damper plays a vital role in the comfort level, the maneuverability, the stability and the safety of the automobiles as an important part of the vibration damping system of the automobiles. Generally, an oil-type shock absorber is composed of a piston, a cylinder, groups of valve members in the cylinder, a shock absorber spring and a shock absorber dust cover. In operation, in order to avoid silt, dust and the like to enter the shock absorber and influence the normal operation thereof, the dust cover of the shock absorber is required to be higher. In conclusion, the main function of the dust cover of the shock absorber is to isolate the shock absorber from the external environment so as to prevent silt and dust from entering the shock absorber and influencing the normal operation of the shock absorber.
However, the existing shock absorber dust cover has the following defects: because the general operating temperature of rear shock absorber is higher, there is a little fluid in piston rod surface and the oil blanket lip of hydro-cylinder unavoidably, these fluid volatilize under the higher environment of temperature and produce the oil mist, meet the oil cylinder urceolus liquefaction of lower temperature and become the oil droplet when the oil mist spreads to the outside, the oil droplet adsorbs and causes the phenomenon of pseudo-oil leak on the surface of hydro-cylinder.
For example, a "dust cover for a shock absorber" whose publication number is CN 107542926 a disclosed in chinese patent document includes a bellows-shaped cover body, one end of which is provided with a closing pipe, and the other end is fixed by a connector fitting with a shock absorber spring seat, and is characterized in that the cover body includes a plurality of wave crests and wave troughs connected in sequence; the trough is provided with a reinforcing framework with a hollow structure. The dust cover of the shock absorber has the problem of false oil leakage when in work.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome current shock absorber dust cover and cause the problem of the false nature oil leak of hydro-cylinder, it is good to provide a leakproofness, can effectively solve the shock absorber dust cover of the false nature oil leak problem of hydro-cylinder.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a dust cover of a shock absorber comprises a cover body, wherein the cover body is in a corrugated pipe shape; one end of the cover body is provided with a clamping sleeve, the other end of the cover body is provided with a guide sleeve, and a clamping groove is arranged in the guide sleeve; a felt ring is arranged in the guide sleeve at a position corresponding to the clamping groove, and an annular boss is arranged on the outer wall of the felt ring; the annular boss is clamped inside the clamping groove.
According to the technical scheme, the clamping sleeve is clamped on the spring seat of the shock absorber in use, and the clamping sleeve is tightly attached to the spring seat; the other end of the cover body opposite to the clamping sleeve is a guide sleeve, when the shock absorber is used, the guide sleeve is sleeved on an oil cylinder outer cylinder of the shock absorber, an annular boss on the outer wall of the felt ring is clamped in a clamping groove of the sleeve, and the inner wall of the felt ring is tightly attached to the oil cylinder outer cylinder.
The basic principle of the utility model is that, through the inseparable cooperation of joint cover and bumper shock absorber spring holder and the inseparable cooperation realization of felt ring and hydro-cylinder urceolus to bumper shock absorber workspace sealed for the oil mist can't spread to hydro-cylinder urceolus department from the port of dust cover, and in addition, the felt ring also can absorb the oil mist effectively, has eliminated the pseudo oil leak phenomenon of bumper shock absorber under the combined action of the two.
Preferably, one end of the cover body close to the clamping sleeve is provided with a plurality of exhaust valves which are uniformly distributed along the circumferential direction; and one end of the cover body, which is close to the guide sleeve, is provided with a plurality of suction valves which are uniformly distributed along the circumferential direction. The working space of the shock absorber is isolated from the external environment through the one-way suction and exhaust valves, the cleanliness of the working space inside is guaranteed, in addition, in the working process, the telescopic motion of the cover body enables the working space inside the shock absorber to be subjected to gas exchange with the external environment, the oil mist concentration in the working space is further reduced, and the shock absorber is cooled through the ventilation process.
Preferably, the air ports of the suction valve and the exhaust valve are provided with filter screens. The filter screen can prevent dust from being sucked in the air exchange process of the dust cover.
Preferably, the annular boss has a right-angled trapezoidal longitudinal section. The right trapezoid structure enables the felt ring to be installed in the clamping groove more easily.
Preferably, the material of the clamping sleeve is high-elasticity butadiene-styrene copolymer rubber. The clamping sleeve made of butadiene-styrene copolymer rubber has high elasticity, so that the clamping sleeve can be better coated on the spring seat of the early shock absorber, and the sealing effect is better.
Therefore, the utility model discloses following beneficial effect has:
(1) the sealing performance to the working space is better than that of the dust cover of the existing shock absorber;
(2) the phenomenon of false oil leakage of the shock absorber is avoided;
(3) can realize the gaseous circulation of working space and take a breath through inhaling discharge valve, and then reduce working space oil mist concentration and cool down the bumper shock absorber.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic partial sectional view of the present invention.
Fig. 3 is an isometric side view of a component of the present invention.
Fig. 4 is a schematic partial cross-sectional view of a component of the present invention.
In the figure: 1. the device comprises a spring seat 2, a clamping sleeve 3, a cover body 4, a piston rod 5, an air suction valve 6, a guide sleeve 7, an oil cylinder 8, a felt ring 9, a clamping groove 10, an exhaust valve 11 and a filter screen.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows: in the embodiment shown in fig. 1 to 4, a dust cover for shock absorbers comprises a cover body 3, the cover body 3 being provided in a bellows shape; one end of the cover body 3 is provided with a clamping sleeve 2, the other end of the cover body 3 is provided with a guide sleeve 6, and the guide sleeve 6 is internally provided with a clamping groove; a felt ring 8 is also arranged in the guide sleeve 6, and an annular boss coaxial with the guide sleeve 6 is arranged on the outer wall of the felt ring 8 in the circumferential direction; the boss is clamped inside the clamping groove 9. In addition, one end of the cover body 3 close to the clamping sleeve is also provided with four exhaust valves 10 which are uniformly distributed along the circumferential direction; one end of the cover body 3 close to the guide sleeve 6 is also provided with four air suction valves 5 which are uniformly distributed along the circumferential direction; a filter screen 11 is arranged at the air port of the air suction valve 5 and the air exhaust valve 10; the cross section of the annular boss is in a right trapezoid shape; the clamping sleeve 2 is made of a high-elasticity butadiene-styrene copolymer rubber material.
In the above embodiment, the high-elasticity clamping sleeve 2 is coated on the shock absorber spring seat 1, and the contact surface between the clamping sleeve 2 and the spring seat 1 is tightly attached under the elastic force of the material of the clamping sleeve 2, and similarly, the contact surface between the guide sleeve 6 and the oil cylinder 7 is tightly attached; the inner surface of the felt ring 8 is tightly attached to the outer cylinder of the oil cylinder 7, the annular boss on the outer surface is clamped in the clamping groove 9, the cross section of the annular boss is in a right trapezoid shape, and the felt ring 8 is convenient to mount at the clamping groove 9 due to the structure of the right trapezoid; the suction valve 5 and the exhaust valve 10 on the cover body 3 are one-way valves with the same structure, namely the mounting directions of the one-way valves on the cover body are opposite to each other, so that different suction and exhaust functions are realized.
The utility model discloses at the during operation, the cover body 3 is sealed complete relatively with the workspace in the bumper shock absorber for workspace keeps apart with the external world in the bumper shock absorber, and particles such as various pollutant impurities in the external world can't enter into bumper shock absorber workspace. When the shock absorber works, the bellows structure of the cover body 3 can stretch and retract along with the shock absorber, the temperature of the working space of the shock absorber in the whole cover body rises, a small amount of oil liquid can be adhered to the piston rod 4 of the shock absorber and the oil seal lip of the oil cylinder, and the oil liquid can volatilize to the working space in the whole cover body when the temperature rises, for the existing shock absorber dust cover, the volatilized oil mist can be diffused to the outer cylinder of the shock absorber oil cylinder from the port of the dust cover, the temperature of the outer cylinder of the oil cylinder is lower than that in the cover, the oil mist can be liquefied into small oil drops to be adsorbed at the outer cylinder of the oil cylinder, and the phenomenon of false oil leakage is caused, however, the problem does not exist for the utility model, because the cover 3 makes the inner working space relatively completely sealed, oil mist cannot spread from both ends of the cover 3, and most of all, the felt rings 8 provided inside the guide sleeves 6 absorb the oil mist.
Besides the above effects, the air suction and exhaust holes arranged on the cover body 3 realize the circulation exchange with the outside air when the bellows structure makes telescopic movement, further reduces the oil mist concentration inside the cover body 3, takes away the heat in the working space due to the flowing of the air, and plays a role in cooling the working space. To sum up, the utility model has the advantages of dustproof effectual, can eliminate false oil leak phenomenon, do benefit to the refrigerated of working space in the dust cover.
Example two: one end of the cover body 3 close to the clamping sleeve is provided with five exhaust valves 10 which are uniformly distributed along the circumferential direction; and six air suction valves which are uniformly distributed along the circumferential direction are also arranged at one end of the cover body 3 close to the guide sleeve 6, and the other parts are the same as the first embodiment.
Example three: one end of the cover body 3 close to the clamping sleeve is provided with six exhaust valves 10 which are uniformly distributed along the circumferential direction; one end of the cover body 3 close to the guide sleeve 6 is also provided with eight air suction valves which are uniformly distributed along the circumferential direction, and the other embodiments are the same as the first embodiment.
Claims (5)
1. A shock absorber dust cover comprises a cover body (3), and is characterized in that the cover body (3) is in a corrugated pipe shape; one end of the cover body (3) is provided with a clamping sleeve (2), the other end of the cover body (3) is provided with a guide sleeve (6), and a clamping groove (9) is arranged in the guide sleeve (6); a felt ring (8) is arranged in the guide sleeve (6), and an annular boss coaxial with the guide sleeve (6) is arranged on the outer wall of the felt ring (8) in the circumferential direction; the annular boss is clamped inside the clamping groove (9).
2. The dust cover of the shock absorber as claimed in claim 1, wherein a plurality of exhaust valves (10) are uniformly distributed along the circumferential direction at one end of the cover body (3) close to the clamping sleeve (2); one end of the cover body (3) close to the guide sleeve is provided with a plurality of air suction valves (5) which are uniformly distributed along the circumferential direction.
3. The dust cover of the shock absorber as claimed in claim 2, wherein a filter screen (11) is provided at the air port of the suction valve (5) and the exhaust valve (10).
4. The dust cover for shock absorbers according to claim 1, wherein said annular projection has a right-angled trapezoidal longitudinal section.
5. A shock absorber dust cover as claimed in any one of claims 1 to 4, wherein the clamping sleeve (2) is made of a highly elastic butadiene-styrene copolymer rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020244988.7U CN212155618U (en) | 2020-03-03 | 2020-03-03 | Dust cover of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020244988.7U CN212155618U (en) | 2020-03-03 | 2020-03-03 | Dust cover of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212155618U true CN212155618U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020244988.7U Active CN212155618U (en) | 2020-03-03 | 2020-03-03 | Dust cover of shock absorber |
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|---|---|
| CN (1) | CN212155618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943837A (en) * | 2021-02-01 | 2021-06-11 | 桂林航天工业学院 | Oil mist absorption sealing structure and shock absorber assembly |
| CN113785702A (en) * | 2021-08-26 | 2021-12-14 | 南京裕航科技有限公司 | Rail type leveling device and grain protection method |
-
2020
- 2020-03-03 CN CN202020244988.7U patent/CN212155618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943837A (en) * | 2021-02-01 | 2021-06-11 | 桂林航天工业学院 | Oil mist absorption sealing structure and shock absorber assembly |
| CN113785702A (en) * | 2021-08-26 | 2021-12-14 | 南京裕航科技有限公司 | Rail type leveling device and grain protection method |
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