CN202732964U - Dust cover for oil seal - Google Patents
Dust cover for oil seal Download PDFInfo
- Publication number
- CN202732964U CN202732964U CN2012203170477U CN201220317047U CN202732964U CN 202732964 U CN202732964 U CN 202732964U CN 2012203170477 U CN2012203170477 U CN 2012203170477U CN 201220317047 U CN201220317047 U CN 201220317047U CN 202732964 U CN202732964 U CN 202732964U
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- CN
- China
- Prior art keywords
- dust
- assembly
- oil seal
- exhaust port
- oil sealing
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- 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.)
- Expired - Lifetime
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
- F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The embodiments of the utility model provide a dust cover for an oil seal and relates to the field of automotive transmissions. The dust cover for the oil seal is used for solving the problems that the abrasion to an oil seal lip is accelerated and the service life of the oil seal is then shortened because dust cannot be effectively prevented from entering the oil seal lip through gaps with the adoption of the existing dust cover structure. According to the embodiments of the utility model, a dust exhaust port is formed in a component fixed on an output flange and located at a staggered part, and meanwhile, the direction of the dust exhaust port and the running direction of the component are opposite, so that the dust at the staggered part can be exhausted from the dust exhaust port by using a centrifugal force which is generated in a manner that the output flange drives the component to rotate. Thus, the dust is effectively prevented from entering the oil seal lip, and then, the problems that the abrasion to the oil seal lip is accelerated and the service life of the oil seal is then shortened are solved.
Description
Technical field
The utility model relates to the automotive transmission field, relates in particular to a kind of oil sealing dust-proof cover.
Background technique
In automotive transmission, generally adopt oil sealing as the oil sealing parts.
As shown in Figure 1a, the oil sealing 12 that is arranged on the case of transmission 11 comprises the skeleton 12B of rigidity and the oil seal lip 12A of flexibility.Because work under bad environment, oil sealing 12 not to be taked in the situation of dust prevention, the foreign objects such as dust can enter oil seal lip 15 between the output flange 14 of oil sealing 12 and speed changer with air-flow.Because output flange 14 rotates as output block in the speed changer working procedure, and oil sealing 12 is fixing, therefore, when dust enters oil seal lip 15, can accelerate the wearing and tearing of oil seal lip, thereby cause oil seal failure, causes the speed changer leakage of oil.
For above problem, prior art has proposed a kind of solution of the oil sealing dust-proof cover for covering oil sealing.
Shown in Fig. 1 b, oil sealing 12 is covered by oil sealing dust-proof cover 13.Oil sealing dust-proof cover 13 comprises the first assembly 13A and the second assembly 13B, wherein the second assembly 13B is fixedly connected with case of transmission 11, the first assembly 13A is fixedly connected with output flange 14, and the second assembly 13B and the first assembly 13A leave ground, space at dust approach axis X and interlock, and form the second staggered position Y2.
Simultaneously, the oil seal lip 12A of the first assembly 13A and oil sealing 12 also leaves ground, space at dust approach axis X and interlocks, thereby forms the first staggered position Y1.By using this oil sealing dust-proof cover 13, can prevent that dust from directly entering oil seal lip 15.
But, in the above-mentioned oil sealing dust-proof cover 13, owing to the first assembly 13A can rotate along with the rotation of output flange 14, need between the first assembly 13A and the case of transmission 11 of fixing, interspace, so that the first assembly 13A can dynamically cover oil sealing in the rotation jointly with output flange 14.Therefore dust also can enter oil seal lip 15 by the second staggered position Y2, the first staggered position Y1 and space, thereby the wearing and tearing of oil seal lip occur to accelerate, and shortens the oil sealing problem in working life.
The model utility content
Embodiment of the present utility model provides a kind of oil sealing dust-proof cover, can more effectively intercept dust and enter oil seal lip.
For achieving the above object, embodiment of the present utility model adopts following technological scheme:
A kind of oil sealing dust-proof cover, comprise the first assembly that is fixed on the output flange, described the first assembly and oil seal lip leave ground, space at the dust approach axis and interlock, form the first staggered position, described the first assembly that is positioned at the described first staggered position is provided with the first dust exhaust port, and the rotation direction of the direction of described the first dust exhaust port and described the first assembly is runed counter to.
Preferably, described oil sealing dust-proof cover also comprises the second assembly that is fixed on the case of transmission.Preferably, described the first assembly and described the second assembly leave ground, space at described dust approach axis and interlock, and form the second staggered position.
Preferably, in the described oil sealing dust-proof cover, described the second assembly that is positioned at the described second staggered position is provided with the second dust exhaust port.
More preferably, in the described oil sealing dust-proof cover, being circumferentially arranged of described the first assembly of a plurality of described the first dust discharge opening's edges, and being circumferentially arranged of a plurality of described the second described the second assemblies of dust discharge opening's edge.
In the oil sealing dust-proof cover that the utility model embodiment provides, because dust exhaust port is arranged on the assembly that is fixed on the output flange, and dust exhaust port is positioned at staggered position, simultaneously the direction of dust exhaust port is runed counter to the rotation direction of assembly, and will the interlock dust at position of the centrifugal force that therefore can utilize output flange to drive assembly rotation generation is discharged from dust exhaust port.Thus, effectively avoided dust to enter oil seal lip, therefore avoided the wearing and tearing of oil seal lip occuring to accelerate and shortening the oil sealing problem in working life.
Description of drawings
Fig. 1 a is the schematic representation of the structure of oil sealing in the prior art;
Fig. 1 b is the local enlarged diagram of a kind of oil sealing dust-proof cover of prior art employing;
The schematic representation of a kind of oil sealing dust-proof cover that Fig. 2 provides for the utility model embodiment;
The schematic representation of the another kind of oil sealing dust-proof cover that Fig. 3 provides for the utility model embodiment;
Fig. 4 is that the first assembly among Fig. 2 is along the sectional view of A-A '.
Embodiment
Below in conjunction with accompanying drawing the oil sealing dust-proof cover that the utility model embodiment provides is described in detail.
The utility model embodiment provides a kind of oil sealing dust-proof cover, as shown in Figure 2, comprise the first assembly 23A that is fixed on the output flange 24, described the first assembly 23A and oil seal lip 22A leave ground, space at the dust approach axis and interlock, form the first staggered position Y21, wherein, described the first assembly 23A that is positioned at the described first staggered position Y21 is provided with the first dust exhaust port P1, and the rotation direction of the direction of described the first dust exhaust port P1 and described the first assembly 23A is runed counter to.
In the oil sealing dust-proof cover that the utility model embodiment provides, because dust exhaust port is arranged on the assembly that is fixed on the output flange, and dust exhaust port is positioned at staggered position, simultaneously the direction of dust exhaust port is runed counter to the rotation direction of assembly, and will the interlock dust at position of the centrifugal force that therefore can utilize output flange to drive assembly rotation generation is discharged from dust exhaust port.Thus, effectively avoided dust to enter oil seal lip, therefore avoided the wearing and tearing of oil seal lip occuring to accelerate and shortening the oil sealing problem in working life.
Oil sealing dust-proof cover shown in Figure 2 also comprises the second assembly 23B that is fixed on the case of transmission 21; Described the first assembly 23A and described the second assembly 23B leave ground, space at described dust approach axis X and interlock, and form the second staggered position Y22.
Preferably, in the oil sealing dust-proof cover of above-described embodiment, be positioned on described the second assembly 23A of the described second staggered position Y22 and also can be provided with the second dust exhaust port P2.So that discharge quickly by the second dust exhaust port P2 from the dust of the first dust exhaust port P1 eliminating, therefore, can further reduce the possibility that dust enters oil seal lip.
Oil sealing dust-proof cover shown in Figure 2 adopts the alternating expression structure.Particularly, it forms described alternating expression structure by making the staggered first assembly 23A of reaching of the first assembly 23A and oil seal lip 22A and the second assembly 23B staggered.In the oil sealing dust-proof cover 23 of this alternating expression structure, the first assembly 23A and oil seal lip 22A leave space ground at dust approach axis X and interlock and form the first staggered position Y21, and the first assembly 23A of envelope dust-proof cover and the second assembly 23B leave ground, space at dust approach axis X and interlock and form the second position Y22 that interlocks.
In the automotive transmission operation process, dust can flow with the direction shown in the X among Fig. 2 with air-flow, and remains in above-mentioned first, second staggered position (Y21, Y22).And output flange 24 rotates with the running of automotive transmission, with to the corresponding part outputting power in the automobile.
Because the first assembly 23A of oil sealing dust-proof cover is fixedly connected with output flange 24, and and fixing housing 21 between leave the space so that the first assembly 23A can with output flange 24 common rotations and covering oil sealing 22.
The described first staggered position Y21 at first group 23A is provided with the first dust exhaust port P1, and as illustrated in fig. 4, the rotation direction of the direction of this first dust exhaust port P1 and this first assembly 23A self is runed counter to, therefore in the first assembly 23A rotary course of oil sealing dust-proof cover, produce centrifugal force, thereby the dust of the first staggered position Y21 is discharged from the first dust exhaust port P1.
Thereby, by above-mentioned the first dust exhaust port P 1 is set at the oil sealing dust-proof cover, can effectively intercept dust and enter oil seal lip.
In addition, owing on the second assembly 23B of the second staggered position Y22, further be provided with the second dust exhaust port P2, so that discharge quickly by the second dust exhaust port P2 from the dust of the first dust exhaust port P1 eliminating.
Thereby, by above-mentioned the second dust exhaust port P2 is set at the oil sealing dust-proof cover, can more effectively intercept dust and enter oil seal lip.
Fig. 3 shows the mode of execution that dust exhaust port is set at the oil sealing dust-proof cover that adopts maze-type structure.
As shown in Figure 3, the oil sealing dust-proof cover comprises an assembly, called after the first assembly 33A, and it is fixedly connected with output flange 34.Many twisting turns of the first assembly 33A form described maze-type structure.In the oil sealing dust-proof cover of this maze-type structure, the first assembly 33A by the oil sealing dust-proof cover and oil seal lip 32A leave ground, space at dust approach axis X31 and interlock and form the first staggered position Y31.
In the automotive transmission operation process, dust can flow with the direction shown in the X31 among Fig. 3 with air-flow, and remains in the above-mentioned first staggered position Y31.And output flange 34 rotates with the running of automotive transmission, with to the corresponding part outputting power in the automobile.
Because the first assembly 33A is fixedly connected with output flange 34, and and fixing housing 31 between interspace so that the first assembly 33A can with output flange 34 common rotations and covering oil sealing 32.
The described first staggered position Y31 at first group 33A is provided with the first dust exhaust port P31, and the rotation direction of the direction of this first dust exhaust port P31 and this first assembly 33A self is runed counter to, therefore in the first assembly 33A rotary course, produce centrifugal force, thereby the dust of the first staggered position Y31 is discharged from the first dust exhaust port P31.
Thereby, by above-mentioned the first dust exhaust port P31 is set at the oil sealing dust-proof cover, can effectively intercepts dust and enter oil seal lip 35.
Fig. 4 shows a kind of concrete mode of execution of the dust exhaust port set-up mode of oil sealing dust-proof cover, that is: a plurality of dust exhaust port P1 are along being circumferentially arranged of the first assembly 23A, and the direction of a plurality of dust exhaust port P1 and the first assembly 23A rotation direction Y4 run counter to.
Similarly, oil sealing dust-proof cover for the employing alternating expression structure that is provided with the first dust exhaust port and the second dust exhaust port shown in Figure 2, the number of the first dust exhaust port and the second dust exhaust port all can be a plurality of, and a plurality of the first dust exhaust ports can be along being circumferentially arranged of the first assembly, and a plurality of the second dust exhaust ports also can being circumferentially arranged along the second assembly; For the oil sealing dust-proof cover of the employing maze-type structure that is provided with the first dust exhaust port shown in Figure 3, the first dust exhaust port also can be for a plurality of, and being circumferentially arranged along the first assembly.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (4)
1. oil sealing dust-proof cover, comprise the first assembly that is fixed on the output flange, described the first assembly and oil seal lip leave ground, space at the dust approach axis and interlock, form the first staggered position, it is characterized in that, described the first assembly that is positioned at the described first staggered position is provided with the first dust exhaust port, and the rotation direction of the direction of described the first dust exhaust port and described the first assembly is runed counter to.
2. oil sealing dust-proof cover according to claim 1 is characterized in that, also comprises the second assembly that is fixed on the case of transmission; Described the first assembly and described the second assembly leave ground, space at described dust approach axis and interlock, and form the second staggered position.
3. oil sealing dust-proof cover according to claim 2 is characterized in that, described the second assembly that is positioned at the described second staggered position is provided with the second dust exhaust port.
4. oil sealing dust-proof cover according to claim 3 is characterized in that,
Being circumferentially arranged of described the first assembly of a plurality of described the first dust discharge opening's edges, and being circumferentially arranged of a plurality of described the second described the second assemblies of dust discharge opening's edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203170477U CN202732964U (en) | 2012-06-30 | 2012-06-30 | Dust cover for oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203170477U CN202732964U (en) | 2012-06-30 | 2012-06-30 | Dust cover for oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732964U true CN202732964U (en) | 2013-02-13 |
Family
ID=47658665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203170477U Expired - Lifetime CN202732964U (en) | 2012-06-30 | 2012-06-30 | Dust cover for oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662253A (en) * | 2014-08-20 | 2017-05-10 | Nok株式会社 | Sealing structure |
-
2012
- 2012-06-30 CN CN2012203170477U patent/CN202732964U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662253A (en) * | 2014-08-20 | 2017-05-10 | Nok株式会社 | Sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191114 Address after: 071000 No.75, Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee after: Beehive transmission technology Hebei Co.,Ltd. Address before: 071000 no.2266, Chaoyang South Street, Baoding City, Hebei Province Patentee before: GREAT WALL MOTOR Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |