CN219866253U - Novel bead type oil seal for vibration damper - Google Patents
Novel bead type oil seal for vibration damper Download PDFInfo
- Publication number
- CN219866253U CN219866253U CN202320518684.9U CN202320518684U CN219866253U CN 219866253 U CN219866253 U CN 219866253U CN 202320518684 U CN202320518684 U CN 202320518684U CN 219866253 U CN219866253 U CN 219866253U
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- China
- Prior art keywords
- rubber
- dustproof
- oil seal
- sealing
- novel bead
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- 239000011324 bead Substances 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 31
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 31
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims abstract description 19
- 230000035939 shock Effects 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004519 grease Substances 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a novel bead type oil seal for a shock absorber, which comprises a PTFE (polytetrafluoroethylene resin) ring, a rubber matrix and a dustproof spring; the PTFE ring is of a C-shaped annular structure, is embedded in the rubber matrix, is combined with a D-shaped joint in the middle of the rubber to form a combined sealing part, and forms double sealing together with a sealing lip part in the lower part of the rubber; the dustproof spring is assembled on the dustproof lip opening part of the upper part of the rubber to provide holding force; the concave cavity which is not contacted with the piston rod can be coated with lubricating grease; the utility model uses double sealing, reduces sliding resistance and friction heat, improves dustproof effect, and can be applied to occasions with long service life, low friction, less oil loss, low noise, high dustproof performance and the like.
Description
Technical Field
The utility model belongs to the technical field of bead type oil seals for vibration absorbers, and particularly relates to a novel bead type oil seal for vibration absorbers.
Background
The shock absorber bead type oil seal is a sealing piece for reciprocating motion, and the purpose of sealing is achieved through extrusion deformation of a rubber lip; the old bead type oil seal is made of all-rubber materials and is of a multi-lip sealing structure, the service life of a sealing piece is shortened due to huge friction resistance and friction heat caused by frequent sliding, abnormal sound is easily generated due to large friction resistance, and moreover, the old bead type oil seal has no dustproof capability, and sediment easily enters the oil seal to cause lip scratch failure; because of the limitation of the old plant type oil seal, the method is not suitable for the requirements of modern vehicles on long service life, low friction, low oil loss, low noise, high dust resistance and the like of the shock absorber.
Disclosure of Invention
Based on the problems, the utility model provides a novel bead type oil seal for a shock absorber, and the novel bead type oil seal shock absorber device has long sealing life and good dustproof effect.
A novel bead type oil seal for a vibration damper comprises a rubber matrix and a PTFE ring; the rubber substrate is of a cylindrical structure, the PTFE ring is of a C-shaped annular structure, the middle part of the rubber substrate protrudes inwards to form a D-shaped structure matched with the C-shaped annular structure, the rubber substrate is positioned at the outer side of the PTFE ring, and the two ends of the PTFE ring 4"C' are inserted from the inner side of the middle part of the rubber substrate 2 and are embedded with the D-shaped structure in the middle part of the rubber substrate 2 to form a combined sealing part; the lower part of the rubber matrix protrudes inwards to form a sealing lip part; the upper part of the rubber matrix protrudes inwards to form a dustproof lip opening.
Furthermore, the novel bead-type oil seal for the shock absorber further comprises a dust-proof spring; a circle of groove is arranged on the outer side of the dustproof lip opening, and the dustproof spring is assembled in the groove of the dustproof lip opening on the upper portion of the rubber matrix after being stretched.
Further, there are depressions between the dust lip portion and the PTFE ring, and between the PTFE ring and the seal lip portion.
Further, this novel pearl formula oil blanket is used with the shock absorber cooperation, the shock absorber includes the piston rod, and novel pearl formula oil blanket is established in the outside of piston rod, and sealing lip oral area and combination sealing portion form dual seal to the piston rod jointly.
Compared with the prior art, the beneficial effects of the scheme are as follows:
the novel bead type oil seal for the shock absorber forms a combined sealing part through the embedding of the PTFE ring and the rubber, and besides the old rubber seal, the PTFE ring is secondarily sealed under the elastic support of the rubber, so that the sealing effect is improved; PTFE and the piston rod have small sliding friction force and slow temperature rise, and the service life of the oil seal is prolonged.
According to the novel bead-type oil seal for the shock absorber, the dustproof lip structure is added, and the dustproof spring is used for providing the holding force, so that the dustproof function of the oil seal is better;
according to the novel bead type oil seal for the shock absorber, the middle part of the rubber matrix is set to be of a D-shaped structure, so that the radial rigidity is reduced, and the eccentric resistance is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a novel bead-type oil seal structure for a shock absorber;
wherein: 1. a piston rod; 2. a rubber matrix; 3. a dust-proof spring; 4. a PTFE ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, in the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
The embodiment of the novel bead type oil seal for the shock absorber is shown in fig. 1:
a novel bead type oil seal for a shock absorber comprises a rubber matrix 2 and a PTFE ring 4; the rubber substrate 2 is of a cylindrical structure, the PTFE ring 4 is of a C-shaped annular structure, the inner side of the middle part of the rubber substrate 2 protrudes towards the central shaft of the rubber substrate 2 to form a D-shaped structure matched with the C-shaped annular structure, the rubber substrate 2 is positioned at the outer side of the PTFE ring 4, and two ends of the PTFE ring 4"C are inserted from the inner side of the middle part of the rubber substrate 2 and are embedded with the D-shaped structure of the middle part of the rubber substrate 2 to form a combined sealing part; the lower part of the rubber matrix 2 protrudes inwards to form a sealing lip part; the upper part of the rubber matrix 2 protrudes inwards to form a dustproof lip opening.
In the utility model, the PTFE and rubber combined structure is provided with the old rubber seal, and the PTFE ring 4 is secondarily sealed under the rubber elastic support, so that the sealing effect is improved. The dustproof lip opening structure is added, and the sealing element has the dustproof function; the combined sealing part and the sealing lip part at the lower part of the rubber matrix 2 form double sealing together, so that the sealing effect is improved.
As a further improvement of the utility model, the novel bead type oil seal also comprises a dustproof spring 3, wherein the dustproof spring 3 is annular; a circle of groove is arranged on the outer side of the dustproof lip opening, and the dustproof spring 3 is assembled in the groove of the dustproof lip opening on the upper portion of the rubber matrix 2 after being stretched. The dustproof spring 3 is assembled on the dustproof lip part of the upper part of the rubber matrix 2 to provide holding force.
The dustproof lip part and the PTFE ring 4, and the PTFE ring 4 and the sealing lip part are provided with depressions.
The novel bead type oil seal is used for assembling a shock absorber, and the shock absorber comprises a piston rod 1; the bead-type oil jacket is arranged on the outer side of the piston rod 1, and the sealing lip part and the combined sealing part form double sealing on the piston rod 1 together. The concave of the novel bead type oil seal is non-contacted with the piston rod 1 to form a concave cavity, and lubricating grease can be filled in the concave cavity to reduce sliding friction force.
PTFE is an excellent antifriction material, has small sliding friction with the piston rod 1, has slow temperature rise and prolongs the service life of the oil seal.
In one embodiment of the utility model, the PTFE of the "C" type is molded by compression molding, the rubber matrix 2 is molded by an injection mold, the dustproof spring 3 is molded by coiling a spring wire, the PTFE of the "C" type can be directly embedded into the rubber matrix 2, and the dustproof spring 3 is sleeved in a groove at the mouth of the dustproof lip after being stretched; after the combination is finished, grease is coated in the non-contact concave cavity of the piston rod 1 before the oil seal is assembled.
The utility model forms a combined sealing part by embedding the C-shaped PTFE ring 4 in the rubber matrix 2 and combining with the D-shaped joint in the middle part of the rubber, and the combined sealing part and the sealing lip part at the lower part of the rubber form double sealing together; the dustproof spring 3 is assembled on the dustproof lip part of the upper part of the rubber to provide holding force; the concave cavity which is not contacted with the piston rod 1 is coated with lubricating grease; finally, the sliding resistance and friction heat are reduced, the dustproof effect is improved, and the dustproof device has the characteristics of long service life, low friction, less oil loss, low noise, high dustproof performance and the like.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. The novel bead-type oil seal for the shock absorber is characterized by comprising a rubber matrix and a PTFE ring; the rubber substrate is of a cylindrical structure, the PTFE ring is of a C-shaped annular structure, the middle part of the rubber substrate protrudes inwards to form a D-shaped structure matched with the C-shaped annular structure, the rubber substrate is positioned at the outer side of the PTFE ring, and the two ends of the PTFE ring (4) in the C shape are inserted from the inner side of the middle part of the rubber substrate (2) and are embedded with the D-shaped structure in the middle part of the rubber substrate (2) to form a combined sealing part; the lower part of the rubber matrix protrudes inwards to form a sealing lip part; the upper part of the rubber matrix protrudes inwards to form a dustproof lip opening.
2. The novel bead seal according to claim 1, further comprising a dust spring; a circle of groove is arranged on the outer side of the dustproof lip opening, and the dustproof spring is assembled in the groove of the dustproof lip opening on the upper portion of the rubber matrix after being stretched.
3. The novel bead seal of claim 2, wherein a recess is present between the dust lip portion and the PTFE ring, and between the PTFE ring and the seal lip portion.
4. A novel bead oil seal according to any one of claims 1-3, wherein the novel bead oil seal is used in combination with a damper comprising a piston rod, the novel bead oil seal is provided outside the piston rod, and the sealing lip portion and the combined sealing portion together form a double seal to the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320518684.9U CN219866253U (en) | 2023-03-16 | 2023-03-16 | Novel bead type oil seal for vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320518684.9U CN219866253U (en) | 2023-03-16 | 2023-03-16 | Novel bead type oil seal for vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866253U true CN219866253U (en) | 2023-10-20 |
Family
ID=88333384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320518684.9U Active CN219866253U (en) | 2023-03-16 | 2023-03-16 | Novel bead type oil seal for vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866253U (en) |
-
2023
- 2023-03-16 CN CN202320518684.9U patent/CN219866253U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |