CN221075231U - High-tightness dust cover structure for transmission shaft - Google Patents
High-tightness dust cover structure for transmission shaft Download PDFInfo
- Publication number
- CN221075231U CN221075231U CN202323066183.0U CN202323066183U CN221075231U CN 221075231 U CN221075231 U CN 221075231U CN 202323066183 U CN202323066183 U CN 202323066183U CN 221075231 U CN221075231 U CN 221075231U
- Authority
- CN
- China
- Prior art keywords
- dust cover
- transmission shaft
- tightness
- main body
- cover main
- 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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- 239000000428 dust Substances 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 5
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004519 grease Substances 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
- Sealing Devices (AREA)
Abstract
A high-tightness dust cover structure for a transmission shaft belongs to the technical field of automobile parts. The anti-dust cover comprises a dust cover main body, wherein the dust cover main body is pressed on a vehicle through a pressing plate, and is characterized in that a convex inner cavity is formed in the end portion of the dust cover main body, a dust cover shell is correspondingly embedded into the convex inner cavity of the dust cover main body through an inner groove in the middle of the dust cover main body, the dust cover main body is fixed with the dust cover shell through a binding belt arranged outside the convex inner cavity, annular steps and annular grooves are formed in the two ends of the inner cavity of the dust cover shell from inside to outside respectively, supporting oil seals are arranged in the two annular steps, the supporting oil seals are in interference connection with the dust cover shell, a lip is arranged on an inner ring of each supporting oil seal, and rubber sealing grease is filled in the lip. Compared with the conventional structure, the waterproof and sound-proof sealing structure has better waterproof and sound-proof sealing effects and can prolong the service life.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, and particularly relates to a high-tightness dust cover structure for a transmission shaft.
Background
Along with the progress of scientific technology and the improvement of living standard of people, the requirements of people on automobile comfort are higher and higher, and the requirements on noise, tightness and the like of automobiles are also higher and higher. The automobile transmission shaft dust cover is a part arranged between an engine cabin and a driving cabin, is in direct contact with a transmission shaft under a steering wheel, mainly plays roles of water insulation, sound insulation and dust prevention, and the structure of the automobile transmission shaft dust cover directly influences the tightness, noise level and the like of the whole automobile.
Along with the improvement of the performance requirements of users on the whole automobile, the tightness and the noise isolation performance are improved by continuously improving the structure for automobile designers, and the transmission shaft dust cover is structurally improved to realize better waterproof and sound insulation sealing performance and has longer service life, so that the requirements of users on the continuous improvement of the performance requirements of the whole automobile are met.
Disclosure of utility model
Aiming at the problems, the utility model makes up the defects of the prior art and provides a high-tightness dust cover structure for a transmission shaft; compared with the conventional structure, the waterproof and sound-proof sealing structure has better waterproof and sound-proof sealing effects and can prolong the service life.
In order to achieve the above purpose, the present utility model adopts the following technical scheme.
The utility model provides a high-tightness dust cover structure for a transmission shaft, which comprises a dust cover main body, wherein the dust cover main body is pressed on a vehicle through a pressing plate.
Further, the sealing cover compresses the oil seal after being installed and axially interferes with the oil seal.
Further, the lip is tapered to gradually enlarge the center caliber of the dust-proof housing.
Further, the contact part of the lip and the transmission shaft is in V-shaped fillet line contact.
Further, a circle of inner protrusions are arranged on the inner surface of the middle part of the dustproof cover shell and the inner surface of the sealing cover.
Further, the supporting oil seal is integrally formed through polyurethane.
The utility model has the beneficial effects of.
The utility model has simple structure, realizes good waterproof and sound-proof sealing effect through the interference fit of the two conical lips extending out of the two oil seals and the transmission shaft, and the conical lips are filled with rubber sealing grease, thereby reducing the friction force when the transmission shaft rotates and prolonging the service life.
Drawings
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.
Fig. 1 is a schematic cross-sectional structure of the present utility model.
FIG. 2 is a schematic diagram of the assembled structure of the present utility model and a transmission shaft.
Fig. 3 is a schematic view of the structure of the lip of the supporting oil seal of the present utility model.
The marks in the figure: the dustproof cover comprises a dustproof cover main body 1, a pressing plate 2, a convex inner cavity 3, a dustproof cover shell 4, an inner groove 5, a binding belt 6, an annular step 7, an annular groove 8, a supporting oil seal 9, a lip 10, rubber sealing grease 11, a sealing cover 12, an outer bulge 13, a groove 14, an inner bulge 15 and a transmission shaft 16.
Detailed Description
As shown in the attached drawings, the present embodiment provides a high-tightness dust cover structure for a transmission shaft, which comprises a dust cover main body 1, wherein the dust cover main body 1 is pressed on a vehicle through a pressing plate 2, the pressing plate 2 is fixed with the vehicle through a screw and presses the dust cover main body 1, and dust and water can be prevented through the pressing plate 2.
The end of the dust cover main body 1 is provided with a convex inner cavity 3, the dust cover shell 4 is correspondingly embedded into the convex inner cavity 3 of the dust cover main body 1 through an inner groove 5 in the middle, the dust cover main body 1 and the dust cover shell 4 are fixed through a binding belt 6 arranged outside the convex inner cavity 3, and the dust cover is integrally sleeved outside a transmission shaft 16 during installation.
The two ends of the inner cavity of the dust cover shell 4 are respectively provided with the annular steps 7 and the annular grooves 8 from inside to outside, the two annular steps 7 are respectively provided with the supporting oil seal 9, the supporting oil seal 9 is integrally formed by polyurethane, the hardness is high, the wear resistance is good, the framework support is not needed, the structure is simple, the supporting oil seal 9 is in interference connection with the dust cover shell 4,
The inner ring of the supporting oil seal 9 is provided with a lip 10, and the lip 10 is tapered gradually expanding towards the central caliber of the dust cover shell 4, so that the tightness is improved. After installation, the lip 10 is in interference fit with the transmission shaft 16, and the contact part of the lip 10 and the transmission shaft 16 is in V-shaped fillet line contact, so that the lip 10 is prevented from bending and deforming to influence sealing during assembly.
The lip 10 is filled with rubber sealing grease 11, so that abrasion between the supporting oil seal 9 and the transmission shaft 16 is reduced.
The two annular grooves 8 are provided with sealing covers 12, the sealing covers 12 are in interference connection with the dust cover shell 4, the sealing covers 12 compress the oil seal after being installed and are in axial interference with the oil seal, a circle of outer protrusions 13 are arranged on the outer surface of the sealing covers 12, and the sealing covers 12 are buckled in grooves 14 in the annular grooves 8 of the dust cover shell 4 through the outer protrusions 13, so that the supporting oil seal 9 is prevented from moving axially and falling out.
The inner surface of the middle part of the dust cover shell 4 and the inner surface of the sealing cover 12 are respectively provided with a circle of inner bulges 15, and a transmission shaft 16 is supported in an auxiliary way through the inner bulges 15.
It will be appreciated that the above detailed description of the utility model is provided for illustration of the utility model and not for limitation of the technical solutions described in the embodiments of the utility model, and that the person skilled in the art should understand that the utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (6)
1. The utility model provides a high leakproofness dust cover structure for transmission shaft, includes dust cover main part (1), dust cover main part (1) is pressed on the vehicle through clamp plate (2), its characterized in that, dust cover main part (1) tip is provided with protruding inner chamber (3), dust cover casing (4) are through the interior recess (5) of middle part corresponding embedding dust cover main part (1) protruding inner chamber (3) department to through setting up ribbon (6) of protruding inner chamber (3) department will dust cover main part (1) with dust cover casing (4) are fixed, dust cover casing (4) inner chamber both ends are provided with annular step (7) and ring channel (8) from inside to outside respectively, in two annular step (7) department all is provided with support oil blanket (9), support oil blanket (9) with dust cover casing (4) interference connection, support oil blanket (9) inner ring is provided with lip mouth (10) to be in mouth (10) intussuseption is in sealed rubber seal (11), in two seal cap (12) are provided with on the surface (12) is provided with protruding (13), the sealing cover (12) is buckled in a groove (14) in the annular groove (8) of the dust cover shell (4) through the outer bulge (13).
2. A high tightness dust cover structure for a transmission shaft according to claim 1, wherein said seal cover (12) compresses said oil seal and axially interferes with said oil seal after being mounted.
3. A high-tightness dust cover structure for a transmission shaft according to claim 1, wherein the lip (10) is tapered so as to gradually enlarge the diameter toward the center of the dust cover case (4).
4. A high tightness dust cover structure for a transmission shaft according to claim 3, characterized in that the contact of the lip (10) and the transmission shaft (16) is a V-shaped rounded line contact.
5. The high-tightness dust cover structure for the transmission shaft according to claim 1, wherein a circle of inner protrusions (15) are arranged on the inner surface of the middle part of the dust cover shell (4) and the inner surface of the sealing cover (12).
6. A high-tightness dust cover structure for a transmission shaft according to claim 1, wherein said supporting oil seal (9) is integrally formed of polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323066183.0U CN221075231U (en) | 2023-11-14 | 2023-11-14 | High-tightness dust cover structure for transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323066183.0U CN221075231U (en) | 2023-11-14 | 2023-11-14 | High-tightness dust cover structure for transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221075231U true CN221075231U (en) | 2024-06-04 |
Family
ID=91264736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323066183.0U Active CN221075231U (en) | 2023-11-14 | 2023-11-14 | High-tightness dust cover structure for transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221075231U (en) |
-
2023
- 2023-11-14 CN CN202323066183.0U patent/CN221075231U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |