CN220248788U - Cap member for automobile damper and automobile damper - Google Patents
Cap member for automobile damper and automobile damper Download PDFInfo
- Publication number
- CN220248788U CN220248788U CN202321620023.3U CN202321620023U CN220248788U CN 220248788 U CN220248788 U CN 220248788U CN 202321620023 U CN202321620023 U CN 202321620023U CN 220248788 U CN220248788 U CN 220248788U
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- CN
- China
- Prior art keywords
- shock absorber
- cap member
- wall portion
- automobile shock
- top wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000035939 shock Effects 0.000 claims abstract description 66
- 239000006096 absorbing agent Substances 0.000 claims abstract description 65
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims 3
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
A cap member for an automobile shock absorber, which is connected to one end of a cylinder of an automobile shock absorber, wherein the cap member (10) for an automobile shock absorber is formed in a bottomed tubular shape, and comprises a peripheral wall portion (11) and a top wall portion (12), and a plurality of annular ridges (120) are formed on the outer surface of the top wall portion (12), thereby forming an annular corrugated surface.
Description
Technical Field
The present utility model relates to a cap member for an automobile shock absorber and an automobile shock absorber.
Background
Currently, conventional vehicles use various suspensions to improve the operability or riding comfort. In particular, a suspension (shock absorber) incorporating a spring is used between the wheel and the vehicle body in order to absorb vibration or impact force.
In general, a shock absorber includes a cylinder filled with a working fluid, a cap member covering one end of the cylinder, a piston fitted into the cylinder via the cap member, a piston rod fitted over the piston, a dust cover fitted over the outside of the cap member, and the like. The interior of the cylinder of the shock absorber is divided into an upper chamber and a lower chamber by a piston having a flow valve and a extension valve. A reserve tube is formed at the lower end of the cylinder body, and is connected with the lower chamber via a partition plate having a compression valve and a compensation valve.
The shock absorber achieves a shock absorbing effect in the following manner.
When the piston rod of the shock absorber is compressed, the piston descends, the volume of the upper cavity is increased, the volume of the lower cavity is reduced, the circulation valve is opened, and oil in the lower cavity enters the upper cavity through the circulation valve; and simultaneously, a part of oil liquid of the compression valve is opened to enter the oil storage cylinder. The throttling action of the two valves on the oil liquid causes the shock absorber to generate damping action when in compression motion.
In addition, when the piston rod of the shock absorber is stretched, the piston moves upwards, the volume of the upper cavity is reduced, the volume of the lower cavity is increased, the stretching valve is opened, and oil in the upper cavity enters the lower cavity through the stretching valve; and simultaneously, the compensation valve is opened, and a part of oil enters the lower cavity from the oil storage cylinder. The throttling action of the two valves on the oil liquid causes the shock absorber to generate damping action during the stretching movement.
The cap member of the damper is installed at the top of the damper cylinder, and mainly serves to isolate dust, and the outer surface of the top wall portion of the cap member is formed in a planar shape. However, when the road surface bumps during the operation of the damper, the cushion block, which is externally fitted to the piston rod, above the cap member may contact and rub against the outer surface of the top wall portion of the cap member, and thus noise may be generated due to a large contact area. Therefore, how to reduce noise generated by friction between the buffer block and the outer surface of the top wall portion of the cap member becomes a problem to be solved.
Disclosure of Invention
The present utility model has been made in view of the above-described problems, and an object thereof is to provide a cap member for an automobile shock absorber that can reduce noise, and an automobile shock absorber having the cap member for an automobile shock absorber.
In order to achieve the above object, the present utility model provides a cap member for an automobile shock absorber, which is connected to one end of a cylinder of the automobile shock absorber, and which is formed in a bottomed tubular shape, includes a peripheral wall portion and a top wall portion, and has a plurality of annular ridges formed on an outer surface of the top wall portion, thereby forming an annular corrugated surface.
According to the cap member for the automobile shock absorber of the present utility model, which is formed in a bottomed tubular shape including the peripheral wall portion and the top wall portion, the plurality of annular ridges are formed on the outer surface of the top wall portion to form the annular corrugated surface, in this way, as compared with the cap member in which the outer surface of the top wall portion is flat, by forming the annular corrugated surface, the contact area between the cushion block, which is externally sleeved on the piston rod, above the cap member and the outer surface of the top wall portion of the cap member can be reduced, noise generated due to friction between the two can be reduced, and the NVH performance of the automobile can be improved. Moreover, the production process is very simple, and the corresponding mold can be manufactured through injection molding.
In the cap member for an automobile shock absorber according to the present utility model, the annular ridge is an annular ridge.
In the cap member for an automobile shock absorber according to the present utility model, the plurality of annular ridges are arranged in concentric circles with different diameters.
In the cap member for an automobile shock absorber according to the present utility model, an insertion hole through which the piston rod of the automobile shock absorber is inserted is formed in the center of the ceiling wall portion.
In the cap member for an automobile shock absorber according to the present utility model, the plurality of locking projections for engaging with the dust cover of the automobile shock absorber are formed in the peripheral wall portion.
The utility model also provides an automobile shock absorber, which comprises a cylinder body, the cap component for the automobile shock absorber and a piston embedded in the cylinder body.
In summary, according to the cap member for an automobile shock absorber of the present utility model, which is formed in a bottomed tubular shape including the peripheral wall portion and the top wall portion, the plurality of annular ridges are formed on the outer surface of the top wall portion to form the annular corrugated surface, in this way, compared with the cap member in which the outer surface of the top wall portion is flat, by forming the annular corrugated surface, the contact area between the cushion block, which is externally fitted on the piston rod, above the cap member and the outer surface of the top wall portion of the cap member can be reduced, noise generated due to friction between the two can be reduced, and the NVH performance of the automobile can be improved. Moreover, the production process is very simple, and the corresponding mold can be manufactured through injection molding.
Drawings
Fig. 1 is a schematic view of an automobile shock absorber of the present utility model.
Fig. 2 is a perspective view of the cap member of the automotive shock absorber of the utility model.
Fig. 3 is a schematic view of an outer surface of a top wall portion of an automotive shock absorber cap member of an embodiment of the utility model.
Fig. 4 is a schematic view of an outer surface of a top wall portion of an automotive shock absorber cap member of another embodiment of the present utility model.
Fig. 5 is a schematic view of an outer surface of a top wall portion of a cap member of an automotive shock absorber according to yet another embodiment of the utility model.
Detailed Description
Hereinafter, embodiments of the present utility model will be described with reference to the drawings. However, the cap member for an automobile shock absorber and the automobile shock absorber disclosed in the following embodiments are merely examples, and are not limited to the following embodiments as long as the effects of the present utility model can be achieved.
Fig. 1 is a schematic view of an automobile shock absorber of the present utility model. Fig. 2 is a perspective view of the cap member of the automotive shock absorber of the utility model. Fig. 3 is a schematic view of an outer surface of a top wall portion of an automotive shock absorber cap member of an embodiment of the utility model. Fig. 4 is a schematic view of an outer surface of a top wall portion of an automotive shock absorber cap member of another embodiment of the present utility model. Fig. 5 is a schematic view of an outer surface of a top wall portion of a cap member of an automotive shock absorber according to yet another embodiment of the utility model.
As shown in fig. 1, the automobile shock absorber of the present embodiment includes a cap member 10, a cylinder 20 of the automobile shock absorber covered at one end with the cap member 10, and a piston fitted into the cylinder 20, a piston rod 30 of the piston extending from the cap member 10, and a dust cover 40 being externally fitted over the piston rod 30 and the cap member 10. The interior of the cylinder 20 of the shock absorber is divided into an upper chamber and a lower chamber by a piston having a flow valve and a extension valve. A reserve tube is formed at a lower end of the cylinder body, and the reserve tube is connected to a lower chamber (both not shown) via a diaphragm having a compression valve and a compensation valve.
As shown in fig. 2, in the present embodiment, the cap member 10 is formed in a bottomed tubular shape, including a peripheral wall portion 11 and a top wall portion 12, and a plurality of annular ridges 120 are formed on the outer surface of the top wall portion 12, thereby forming an annular corrugated surface. A penetration hole 121 through which a piston rod of the automobile damper is penetrated is formed in the center of the top wall 12.
Specifically, as shown in fig. 3, the annular ridge 120 may be an annular ridge, as shown in fig. 4, the annular ridge 120 may be an elliptical annular ridge, and as shown in fig. 5, the annular ridge 120 may be a square annular ridge, for example, a square ring, a pentagonal square ring, a hexagonal square ring, or the like, wherein the shape of the annular ridge 120 means: the shape of the annular ridge 120 in a cross section parallel to the outer surface of the top wall portion 12 of the cap member 10. Of course, the shape of the annular ridge 120 in the present application is not limited to this, and may be any other irregular annular shape as long as the outer surface of the top wall 12 can be formed into an annular corrugated surface.
Conventionally, the outer surface of the top wall portion of the cap member is formed in a planar shape. If the road surface jolts during the operation of the shock absorber, the cushion block 50, which is externally fitted over the piston rod, above the cap member may contact and rub against the outer surface of the top wall portion of the cap member, and thus generate a large noise due to a large contact area.
According to the cap member for the automobile shock absorber of the present utility model, which is formed in a bottomed tubular shape including the peripheral wall portion and the top wall portion, the plurality of annular ridges are formed on the outer surface of the top wall portion to form the annular corrugated surface, in this way, as compared with the cap member in which the outer surface of the top wall portion is flat, by forming the annular corrugated surface, the contact area between the cushion block, which is externally sleeved on the piston rod, above the cap member and the outer surface of the top wall portion of the cap member can be reduced, noise generated due to friction between the two can be reduced, and the NVH performance of the automobile can be improved. Moreover, the production process is very simple, and the corresponding mold can be manufactured through injection molding.
The size of the annular ridge 120 is not limited, and the outer surface of the top wall 12 may be formed as an annular corrugated surface. For example, when the annular ridge 120 is an annular ridge, the diameter of the smallest annular ridge among the annular ridges constituting the annular corrugated surface is 10mm, and the diameter of the largest annular ridge is 50mm. In addition, in the case where the annular ridge 120 is a regular hexagonal ring, the length from the vertex of the smallest regular hexagonal ring to the geometric center of the annular ridge constituting the annular corrugated surface is 5mm, and the length from the vertex of the largest regular hexagonal ring to the geometric center is 25mm.
As shown in fig. 3, the plurality of annular ridges 120 constituting the annular corrugated surface are arranged in concentric circles with different diameters. However, the present utility model is not limited to this, and may be arranged in a different concentric circle as long as it can be formed into an annular corrugated surface.
The number of the annular ridges 120 is not limited, and the outer surface of the top wall 12 may be formed into an annular corrugated surface by being arranged inside and outside.
The cap member for an automobile shock absorber may be formed of metal or resin, and may be formed of, for example, PA66+gf30 or PA6 +gf15.
In the cap member for an automobile shock absorber of the present embodiment, as shown in fig. 2, a plurality of locking projections 110 for engaging with the dust cover of the automobile shock absorber are formed in the peripheral wall portion 11. The number of the locking protrusions 110 is not limited in this application, and may be 2, 3, 4, 5 or more, preferably 3.
In the cap member for an automobile shock absorber of the present embodiment, as shown in fig. 2, a flange 111 for stopping and engaging with a dust cover of an automobile shock absorber is formed at an opening end of the cap member for an automobile shock absorber 10.
By providing the locking protrusion 110 and the flange 111, connection with dust covers of different types of automobile shock absorbers is facilitated.
In the cap member for an automobile shock absorber of the present embodiment, as shown in fig. 2, concave portions 112 are formed at intervals along the circumferential direction of the flange 111 on the side of the flange 111 where the dust cover of the automobile shock absorber is stopped. In addition, the number of the concave portions 112 is not limited in this application, and may be 2, 3, 4, 5 or more, preferably 3. By providing the recess 112, it is possible to exhaust air and prevent abnormal noise from occurring when the dust cover moves relative to the cylinder 20 of the damper.
In summary, according to the cap member for an automobile shock absorber of the present utility model, which is formed in a bottomed tubular shape including the peripheral wall portion and the top wall portion, the plurality of annular ridges are formed on the outer surface of the top wall portion to form the annular corrugated surface, in this way, compared with the cap member in which the outer surface of the top wall portion is flat, by forming the annular corrugated surface, the contact area between the cushion block, which is externally fitted on the piston rod, above the cap member and the outer surface of the top wall portion of the cap member can be reduced, noise generated due to friction between the two can be reduced, and the NVH performance of the automobile can be improved. Moreover, the production process is very simple, and the corresponding mold can be manufactured through injection molding.
Finally, it should be noted that: the above embodiments are merely specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications and variations of the embodiments described herein will be apparent to those skilled in the art, and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (6)
1. The cap member for an automobile shock absorber is connected to one end of a cylinder of the automobile shock absorber, and is characterized in that the cap member (10) for an automobile shock absorber is formed in a bottomed tubular shape, and comprises a peripheral wall portion (11) and a top wall portion (12), and a plurality of annular protruding strips (120) are formed on the outer surface of the top wall portion (12), thereby forming an annular corrugated surface.
2. The cap member for an automobile shock absorber according to claim 1, wherein the annular bead (120) is an annular bead.
3. The cap member for an automobile shock absorber according to claim 2, wherein the plurality of annular beads (120) are different in diameter and arranged in concentric circles.
4. The cap member for an automobile shock absorber according to claim 3, wherein,
an insertion hole (121) through which a piston rod of an automobile damper is inserted is formed in the center of the top wall (12).
5. The cap member for an automobile shock absorber according to any one of claims 1 to 4, wherein a plurality of locking protrusions (110) for engagement with a dust cover of an automobile shock absorber are formed in the peripheral wall portion (11).
6. An automobile shock absorber comprising a cylinder, the cap member for an automobile shock absorber according to any one of claims 1 to 5, and a piston embedded in the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321620023.3U CN220248788U (en) | 2023-06-25 | 2023-06-25 | Cap member for automobile damper and automobile damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321620023.3U CN220248788U (en) | 2023-06-25 | 2023-06-25 | Cap member for automobile damper and automobile damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248788U true CN220248788U (en) | 2023-12-26 |
Family
ID=89270264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321620023.3U Active CN220248788U (en) | 2023-06-25 | 2023-06-25 | Cap member for automobile damper and automobile damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248788U (en) |
-
2023
- 2023-06-25 CN CN202321620023.3U patent/CN220248788U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |