Oil seal protective cover, reduction gearbox and vehicle

Abstract

The utility model relates to an oil seal protection cover, a reduction gearbox and a vehicle, the oil seal protection cover comprises a fixing column and a dustproof cover, and the fixing column is used for being inserted into an oil seal and is in interference fit with the oil seal; the dustproof cover is arranged on one side of the fixing column in the length direction and connected with the fixing column, the dustproof cover is used for covering the oil seal, and the dustproof cover is provided with a connecting part used for being connected with a shell; the oil seal is connected with the shell in a sealed mode. When the oil seal protection cover is used, the fixing column is inserted into an oil seal and is in interference fit with the oil seal, so that the oil seal protection cover is fixed and sealed; the connecting part can be connected with the shell to fix the oil seal protective cover, and meanwhile, the dustproof cover covers the oil seal, so that the oil seal is protected, and impurities such as dust are prevented from entering the oil seal. Therefore, the fixing stability of the oil seal protection cover is improved. When the oil seal protective cover is used for the reduction gearbox, the risk of oil leakage of the reduction gearbox can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of reduction gearboxes, and in particular to an oil seal protective cover, a reduction gearbox and a vehicle. Background Art

[0002] Gearboxes are usually shipped with oil. To avoid oil leakage during transportation, an oil seal protective cover is usually provided, wherein the oil seal protective cover is interference fit with the oil seal to achieve fixation and sealing of the oil seal protective cover. The above oil seal protective cover only has an interference fit with the oil seal, which has the problem of poor fixation stability. During the transportation of the gearbox, especially during long-distance transportation, the gearbox will inevitably vibrate, and the oil seal protective cover is easy to loosen, resulting in a high risk of oil leakage in the gearbox. Utility Model Content

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the present disclosure provides an oil seal protection cover to improve the fixing stability of the oil seal protection cover.

[0005] The oil seal protective cover disclosed in the present invention comprises a fixing column and a dust cover, wherein the fixing column is used to be inserted into the oil seal and has an interference fit with the oil seal; the dust cover is arranged on one side of the length direction of the fixing column and is connected to the fixing column, the dust cover is used to cover the oil seal, and the dust cover is provided with a connecting portion for connecting to the shell; wherein the oil seal is sealed and connected to the shell.

[0006] Optionally, the connecting portion is a connecting rod, which is arranged on a side of the dust cover facing the fixing column, and the connecting rod is used to be inserted into a fixing hole of the shell and to have an interference fit with the fixing hole.

[0007] Optionally, the connecting rod includes a rod body and a positioning rib, wherein the positioning rib is arranged on an outer circumferential surface of the rod body, and the positioning rib is used for interference fit with the fixing hole.

[0008] Optionally, the dust cover comprises a cover body and a connecting ear, wherein the connecting ear is arranged on the outer side of the cover body, the cover body is used to cover the oil seal, and the connecting part is arranged on the connecting ear.

[0009] Optionally, there are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the circumference of the dust cover.

[0010] Optionally, the oil seal protective cover further comprises a positioning column, which is arranged on a side of the fixing column away from the dust cover and connected to the fixing column, and is used to be inserted into a positioning hole of a positioning component and to be positioned and matched with the positioning hole.

[0011] Optionally, the positioning column includes a column body and a plurality of positioning protrusions, wherein the positioning protrusions are provided on the outer circumferential surface of the column body, the plurality of positioning protrusions are arranged at intervals along the circumference of the column body, and the positioning protrusions are used to position and cooperate with the positioning holes.

[0012] Optionally, the positioning column includes a positioning section and a guide section, the positioning section is used to cooperate with the positioning hole, the guide section is arranged on a side of the positioning section away from the fixing column, and the diameter of the guide section gradually decreases in a direction away from the positioning section.

[0013] Optionally, the oil seal protection cover further includes a handle, which is disposed on a side of the dust cover away from the fixing column and connected to the dust cover.

[0014] Optionally, the fixing column is provided with a cavity, one end of the cavity away from the dust cover is blocked, and the other end of the cavity extends to the dust cover and forms an opening at the dust cover; the oil seal protective cover includes a connecting plate, a part of the connecting plate is arranged in the cavity and connected to the cavity wall of the cavity, and the other part of the connecting plate is cantilevered out of the cavity to form the handle.

[0015] When the oil seal protective cover disclosed in the present invention is used, in addition to using the fixing column to be inserted into the oil seal and to have an interference fit with the oil seal to achieve the fixing and sealing of the oil seal protective cover, the connecting portion can also be used to connect with the housing to achieve the fixing of the oil seal protective cover, and at the same time, a dust cover is installed at the oil seal to achieve the protection of the oil seal and prevent dust and other impurities from entering the oil seal. Thus, the fixing stability of the oil seal protective cover is improved. When the oil seal protective cover is used for a reduction gearbox, the risk of oil leakage in the reduction gearbox can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic view from one viewing angle of an oil seal protection cover according to an embodiment of the present disclosure.

[0017] Figure 2 It is a stereoscopic view of an oil seal protection cover from another perspective of an embodiment of the present disclosure.

[0018] Figure 3 It is a stereoscopic view of a reduction gearbox according to an embodiment of the present disclosure.

[0019] Figure 4 It is a front view of a reduction gearbox according to an embodiment of the present disclosure.

[0020] Figure 5 yes Figure 4 AA view.

[0021] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0022] Reference numerals:

[0023] 100. Reducer;

[0024] 10. Oil seal protection cover;

[0025] 1. fixed column; 11. cavity; 111. opening;

[0026] 2. dust cover; 21. connection part; 22. cover body; 23. connection ear;

[0027] 3. Positioning column; 31. Column; 311. Guide section; 32. Positioning protrusion;

[0028] 4. Connecting plate; 41. Handle; 411. Handle hole;

[0029] 20. housing; 201. oil seal hole; 202. fixing part;

[0030] 30. Oil seal;

[0031] 40. Positioning component; 401. Positioning hole. DETAILED DESCRIPTION

[0032] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0033] like Figure 1 and Figure 2 As shown, the oil seal protective cover 10 of the embodiment of the present disclosure includes a fixing column 1 and a dust cover 2, wherein the dust cover 2 is arranged on one side of the length direction of the fixing column 1 and connected to the fixing column 1. Figure 5 and Figure 6 As shown, the fixing column 1 is used to be inserted into the oil seal 30 and has an interference fit with the oil seal 30. The dust cover 2 is used to cover the oil seal 30, and the dust cover 2 is provided with a connecting portion 21 for connecting with the housing 20. The oil seal 30 is sealed and connected with the housing 20.

[0034] When the oil seal protection cover 10 of the disclosed embodiment is used, in addition to using the fixing column 1 to insert into the oil seal 30 and to achieve interference fit with the oil seal 30 to achieve the fixing and sealing of the oil seal protection cover 10; the connecting portion 21 can also be used to connect with the housing 20 to achieve the fixing of the oil seal protection cover 10, and at the same time, the dust cover 2 is installed on the oil seal 30 to protect the oil seal 30 and prevent dust and other impurities from entering the oil seal 30. In this way, the fixing stability of the oil seal protection cover 10 is improved. Figure 3 and Figure 4 As shown, when the oil seal protection cover 10 is used in the reduction gearbox 100, the risk of oil leakage in the reduction gearbox 100 can be reduced.

[0035] In some embodiments, Figure 2 As shown, the dust cover 2 includes a cover body 22 and a connecting ear 23, and the connecting ear 23 is arranged on the outer side of the cover body 22. Figure 6 As shown, the cover body 22 is used to cover the oil seal 30, and the connecting portion 21 is provided at the connecting ear 23. The inward direction can be understood as: the direction close to the center line of the fixing column 1 on a plane perpendicular to the center line of the fixing column 1; the outward direction can be understood as: the direction away from the center line of the fixing column 1 on a plane perpendicular to the center line of the fixing column 1.

[0036] By setting the connecting part 21 on the connecting ear 23 and using the cover body 22 to cover the oil seal 30, on the one hand, the connecting ear 23 can be designed separately according to needs to further improve the fixing stability of the oil seal protection cover 10; on the other hand, the cover body 22 can be designed separately according to needs to improve the protection performance of the dust cover 2 on the oil seal 30.

[0037] Optionally, there are multiple connecting portions 21 , and the multiple connecting portions 21 are arranged at intervals along the circumferential direction of the dust cover 2 .

[0038] For example, Figure 1 and Figure 2 As shown, there are three connecting parts 21, which are evenly spaced along the circumference of the dust cover 2. There are three connecting ears 23, which are evenly spaced along the circumference of the cover body 22, and each connecting ear 23 is provided with a connecting part 21.

[0039] By setting the number of connecting parts 21 to be multiple and arranging the multiple connecting parts 21 at intervals along the circumferential direction of the dust cover 2 , the connection reliability between the dust cover 2 and the housing 20 can be improved, thereby further improving the fixing stability of the oil seal protection cover 10 .

[0040] In some embodiments, Figure 1 As shown, the connecting portion 21 is a connecting rod, which is arranged on the side of the dust cover 2 facing the fixing column 1, and is used to be inserted into the fixing hole of the housing 20 and to have an interference fit with the fixing hole. Figure 6 As shown, the fixing hole of the housing 20 forms a fixing portion 202 , and the connecting rod is inserted into the fixing hole and interference fits with the fixing hole, thereby achieving fixation of the connecting portion 21 and the housing 20 .

[0041] Therefore, when installing the oil seal protective cover 10, the fixing column 1 is directly inserted into the oil seal 30, and the connecting rod is inserted into the fixing hole of the housing 20, which is convenient for installing the oil seal protective cover 10; in addition, when disassembling the oil seal protective cover 10, the connecting rod is directly pulled out from the fixing hole of the housing 20, and the fixing column 1 is pulled out from the oil seal 30, which is convenient for disassembling the oil seal protective cover 10. The above design of the oil seal protective cover 10 facilitates the disassembly and assembly of the oil seal protective cover 10 and improves the disassembly and assembly efficiency of the oil seal protective cover 10.

[0042] Optionally, the connecting rod includes a rod body and a positioning rib, wherein the positioning rib is arranged on the outer circumferential surface of the rod body, and the positioning rib is used for interference fit with the fixing hole.

[0043] For example, the positioning ribs are arranged in a spiral along the circumference of the rod body, that is, the connecting rod is a screw rod with external threads, and the external threads form the positioning ribs.

[0044] The connecting rod is configured as the above structure, which can save the material of the connecting rod, thereby reducing the cost of the oil seal protection cover 10.

[0045] In some embodiments, Figure 1 As shown, the oil seal protective cover 10 further includes a positioning column 3, which is disposed on a side of the fixing column 1 away from the dust cover 2 and connected to the fixing column 1. Figure 6 As shown, the positioning post 3 is used to be inserted into the positioning hole 401 of the positioning component and to be positioned and matched with the positioning hole 401 .

[0046] When the oil seal protective cover 10 is used for the reduction gearbox 100 , the positioning component may be a differential, which is installed in the housing 20 and is provided with the positioning hole 401 .

[0047] When installing the oil seal protective cover 10, the positioning column 3 can be inserted into the positioning hole 401 to pre-fix the oil seal protective cover 10; then, the oil seal protective cover 10 can be moved along the length direction of the fixing column 1 to achieve the connection between the fixing column 1 and the oil seal 30 and between the dust cover 2 and the housing 20. In this way, the installation of the oil seal protective cover 10 is further facilitated and the installation efficiency of the oil seal protective cover 10 is improved.

[0048] Optionally, the positioning column 3 includes a column 31 and a plurality of positioning protrusions 32, and the positioning protrusions 32 are arranged on the outer circumference of the column 31. The plurality of positioning protrusions 32 are arranged at intervals along the circumference of the column 31, and the positioning protrusions 32 are used to position and cooperate with the positioning holes 401.

[0049] For example, Figure 1 As shown, there are three positioning protrusions 32 , and the three positioning protrusions 32 are evenly spaced along the circumference of the column 31 .

[0050] The positioning column 3 is configured as the above structure, which can save the material of the positioning column 3 and thus reduce the cost of the oil seal protection cover 10 .

[0051] Alternatively, if Figure 1 and Figure 6 As shown, the positioning column 3 includes a positioning section and a guide section 311. The positioning section is used to position and cooperate with the positioning hole 401. The guide section 311 is arranged on a side of the positioning section away from the fixing column 1. The diameter of the guide section 311 gradually decreases in the direction away from the positioning section.

[0052] When the positioning column 3 is inserted into the positioning hole 401, the end of the guide section 311 with a smaller diameter is first inserted into the positioning hole 401, and then the positioning section is inserted into the positioning hole 401 under the guidance of the guide section 311 to pre-fix the oil seal protection cover 10. The design of the guide section 311 facilitates the insertion of the positioning column 3 into the positioning hole 401, further facilitates the installation of the oil seal protection cover 10, and improves the installation efficiency of the oil seal protection cover 10.

[0053] In some embodiments, the oil seal protection cover 10 further includes a handle 41 , which is disposed on a side of the dust cover 2 away from the fixing column 1 and connected to the dust cover 2 .

[0054] When installing or removing the oil seal protection cover 10 , the operator can hold the handle 41 to facilitate the installation and removal operations of the oil seal protection cover 10 , thereby further improving the installation and removal efficiency of the oil seal protection cover 10 .

[0055] Alternatively, if Figure 1 As shown, the handle 41 is provided with a handle hole 411 for inserting fingers.

[0056] The handle hole 411 is provided to facilitate the operator to apply force to the oil seal protection cover 10 , further facilitate the disassembly and assembly operation of the oil seal protection cover 10 , and further improve the disassembly and assembly efficiency of the oil seal protection cover 10 .

[0057] Alternatively, if Figure 2 and Figure 6 As shown, the fixing column 1 is provided with a cavity 11, one end of the cavity 11 away from the dust cover 2 is blocked, and the other end of the cavity 11 extends to the dust cover 2 and forms an opening 111 at the dust cover 2. The oil seal protection cover 10 includes a connecting plate 4, a part of which is arranged in the cavity 11 and connected to the cavity wall of the cavity 11, and another part of the connecting plate 4 is suspended outside the cavity 11 to form a handle 41.

[0058] By providing the cavity 11 in the fixing column 1, that is, setting the fixing column 1 as a hollow structure, it is helpful to save the material of the oil seal protection cover 10, thereby further reducing the cost of the oil seal protection cover 10. In addition, the weight of the oil seal protection cover 10 can also be reduced.

[0059] Alternatively, if Figure 2 and Figure 6 As shown, the cavity 11 extends to the positioning column 3 .

[0060] Thus, the cost and weight of the oil seal protection cover 10 can be further reduced.

[0061] Optionally, the oil seal protection cover 10 is integrally formed.

[0062] For example, the oil seal protection cover 10 is integrally injection molded.

[0063] The oil seal protection cover 10 is integrally formed, which facilitates the processing and manufacturing of the oil seal protection cover 10 and can reduce the manufacturing cost of the oil seal protection cover 10 .

[0064] like Figures 3 to 6 As shown, the reduction gearbox 100 of the embodiment of the present disclosure includes a housing 20, an oil seal 30 and an oil seal protection cover 10, and the oil seal protection cover 10 is the oil seal protection cover 10 described in any of the above embodiments. The housing 20 is provided with an oil seal hole 201 and a fixing portion 202, and the oil seal 30 is provided in the oil seal hole 201 and is sealed and connected to the oil seal hole 201. The fixing column 1 is inserted into the oil seal 30 and has an interference fit with the oil seal 30, and the connecting portion 21 is connected to the fixing portion 202.

[0065] The reduction gearbox 100 of the disclosed embodiment has the advantages of low oil leakage risk.

[0066] like Figures 3 to 5 As shown, the reduction box 100 includes a differential, and the differential is provided with a positioning hole 401 , and the positioning column 3 is positioned and matched with the positioning hole 401 of the differential.

[0067] The vehicle of the embodiment of the present disclosure includes the reduction box 100 described in any of the above embodiments. The vehicle may be a pure electric vehicle or a hybrid electric vehicle.

[0068] Since the reduction gearbox 100 according to the embodiment of the present disclosure has the advantages of low risk of oil leakage, the risk of oil leakage in the vehicle can be reduced and the user experience can be improved.

[0069] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0072] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0074] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. An oil seal protective cover, characterized in that: include: A fixing post, the fixing post being inserted into the oil seal and having an interference fit with the oil seal; A dust cover, the dust cover is arranged on one side of the length direction of the fixing column and connected to the fixing column, the dust cover is used to cover the oil seal, and the dust cover is provided with a connecting portion for connecting to the housing; Wherein, the oil seal is sealedly connected to the housing.

2. The oil seal protection cover according to claim 1, characterized in that: The connecting portion is a connecting rod, which is arranged on a side of the dust cover facing the fixing column, and is used to be inserted into the fixing hole of the shell and to be interference fit with the fixing hole.

3. The oil seal protection cover according to claim 2, characterized in that: The connecting rod comprises a rod body and a positioning rib, wherein the positioning rib is arranged on the outer peripheral surface of the rod body and is used for interference fit with the fixing hole.

4. The oil seal protection cover according to claim 1, characterized in that: The dust cover comprises a cover body and a connecting ear, wherein the connecting ear is arranged on the outer side of the cover body, the cover body is used for covering the oil seal, and the connecting part is arranged on the connecting ear.

5. The oil seal protection cover according to claim 1, characterized in that: There are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the circumferential direction of the dust cover.

6. The oil seal protection cover according to claim 1, characterized in that: The oil seal protective cover also includes a positioning column, which is arranged on a side of the fixing column away from the dust cover and connected to the fixing column, and is used to be inserted into a positioning hole of a positioning component and positioned in cooperation with the positioning hole.

7. The oil seal protection cover according to claim 6, characterized in that: The positioning column includes a column body and a plurality of positioning protrusions. The positioning protrusions are arranged on the outer peripheral surface of the column body. The plurality of positioning protrusions are arranged at intervals along the circumference of the column body. The positioning protrusions are used to cooperate with the positioning holes in a positioning manner.

8. The oil seal protection cover according to claim 6, characterized in that: The positioning column includes a positioning section and a guide section. The positioning section is used to cooperate with the positioning hole. The guide section is arranged on a side of the positioning section away from the fixing column. The diameter of the guide section gradually decreases in a direction away from the positioning section.

9. The oil seal protection cover according to claim 1, characterized in that: The oil seal protection cover also includes a handle, which is arranged on a side of the dust cover away from the fixing column and connected to the dust cover.

10. The oil seal protection cover according to claim 9, characterized in that: The fixing column is provided with a cavity, one end of the cavity away from the dust cover is blocked, and the other end of the cavity extends to the dust cover and forms an opening at the dust cover; The oil seal protection cover comprises a connecting plate, a part of which is arranged in the cavity and connected to the cavity wall of the cavity, and another part of which is suspended out of the cavity to form the handle.

11. A reduction gearbox, characterized in that: include: A housing, wherein the housing is provided with an oil seal hole and a fixing portion; An oil seal, the oil seal being disposed in the oil seal hole and being sealingly connected to the oil seal hole; An oil seal protective cover, wherein the oil seal protective cover is the oil seal protective cover according to any one of claims 1 to 10, wherein the fixing column is inserted into the oil seal and has an interference fit with the oil seal, and the connecting portion is connected to the fixing portion.

12. A vehicle, characterized in that: Includes the reduction gearbox as claimed in claim 11.

Images