An oil seal, transmission and vehicle

Abstract

The utility model provides a kind of oil seal, transmission and vehicle, it is related to transmission field.In the sealing end of oil seal main body is provided with magnetic part, and the magnetic part is set to the outside of sealing lip.So, when lubricating oil carrying metal impurities flows to the sealing end of main body, the magnetic part can adsorb metal impurities, so that metal impurities are away from sealing lip and rotating shaft, so that the condition that sealing lip is scratched can be effectively avoided, and then the condition that oil seal is damaged, oil leakage can be effectively avoided.

Description

Technical Field

[0001] This application relates to the field of transmissions, and more particularly to an oil seal, a transmission, and a vehicle. Background Technology

[0002] Oil seals are essential components in a vehicle's transmission. They prevent the leakage of lubricating oil and also prevent external impurities from entering the transmission. However, with use, the lubricating oil in the transmission can become contaminated with metallic impurities. These impurities flow with the lubricating oil to the vicinity of the oil seal's sealing lip. Furthermore, the suction generated by the rotation of the transmission's shaft can carry these metallic impurities onto the sealing lip and the shaft. Over time, this can easily lead to oil seal damage and oil leakage. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an oil seal, a transmission and a vehicle to solve the problem that existing oil seals are prone to damage and oil leakage after long-term use.

[0004] According to the above objectives, a first aspect of the present invention provides an oil seal having a body, wherein two ends of the body in the axial direction are respectively formed as a dustproof end and a sealing end, the sealing end including a sealing lip extending toward the dustproof end, and the sealing end further having a magnetic part; the magnetic part is located outside the sealing lip along the radial direction of the body.

[0005] Preferably, the magnetic part is formed in a ring structure.

[0006] Preferably, the number of magnetic parts is one or more, and each magnetic part includes one or more magnets.

[0007] Preferably, the sealing end further includes a support portion extending toward the dustproof end; along the radial direction of the body, the sealing lip is located on the inner side of the body, and the support portion is located on the outer side of the body, such that the sealing end is formed into a U-shaped structure with an opening toward the dustproof end.

[0008] Preferably, along the axial direction of the body, the magnetic part is located at the end of the support part away from the dustproof end and / or the magnetic part is located at the bottom of the open space of the sealed end.

[0009] Preferably, along the axial direction of the main body, the vertical distance between the surface of the main body and the magnetic part is set to L, where 1mm≤L≤2mm.

[0010] Preferably, the sealing lip has a groove, and an elastic element is connected to the groove.

[0011] Preferably, the main body has an internal skeleton.

[0012] According to a second aspect of the present invention, a transmission is provided, wherein the rotating shaft of the transmission is correspondingly fitted with an oil seal as described above.

[0013] According to a third aspect of the present invention, a vehicle is provided, wherein the vehicle includes the transmission described above.

[0014] According to the oil seal, transmission, and vehicle of this invention, a magnetic part is provided at the sealing end of the oil seal body, and the magnetic part is located on the outer side of the sealing lip. Thus, when lubricating oil carrying metallic impurities flows to the sealing end of the body, the magnetic part can attract the metallic impurities, thereby keeping them away from the sealing lip and the rotating shaft. This effectively prevents the sealing lip from being scratched, and consequently, effectively prevents the oil seal from breaking or leaking.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the first embodiment of the main body of this utility model; Figure 2 This is a cross-sectional view of the second embodiment of the main body of this utility model; Figure 3 This is a cross-sectional view of the third embodiment of the main body of this utility model.

[0018] Icons: 1-Main body; 11-Sealing lip; 12-Supporting part; 21-Magnetic part; 31-Dustproof lip; 32-First secondary lip; 33-Second secondary lip; 41-Skeleton; 51-Elastic component. Detailed Implementation The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0019] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0020] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0021] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0022] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0023] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0024] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0025] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0026] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0027] According to a first aspect of the present invention, an oil seal is provided, comprising a body 1, which is formed in an annular structure to be fitted onto the rotating shaft of a transmission. The two ends of the body 1 along its axial direction are respectively formed as a dustproof end and a sealing end. When the body 1 is assembled with the rotating shaft of the transmission, the dustproof end prevents external impurities from entering the transmission, and the sealing end prevents lubricating oil leakage. The specific structure and positional relationship of the aforementioned parts of the oil seal according to the present invention will be described in detail below.

[0028] like Figures 1 to 3As shown, the sealing end in this embodiment includes a sealing lip 11 and a support portion 12, both extending away from the dustproof end along the axial direction (i.e., the X direction) of the main body 1. Along the radial direction (i.e., the Y direction) of the main body 1, the sealing lip 11 is located on the inner side of the main body 1, and the support portion 12 is located on the outer side of the main body 1, so that the sealing end is formed into a U-shaped structure with an opening away from the dustproof end. It should be noted that the inner side of the main body 1 refers to the inner ring of the main body 1 (after assembly with the rotating shaft) closer to the rotating shaft.

[0029] Furthermore, the sealing end is also provided with a magnetic part 21, which is located on the outer side of the sealing lip 11 along the radial direction of the main body 1. Figures 1 to 3 As shown, the magnetic part 21 is located above the sealing lip 11 (directly above or diagonally above). In this way, the magnetic part 21 can adsorb metal impurities in the lubricating oil flowing to the sealing end, thereby keeping the metal impurities away from the sealing lip 11 and the rotating shaft.

[0030] Specifically, the magnetic part 21 is also formed into a ring structure to improve its adsorption effect. Furthermore, the position of the magnetic part 21 is not fixed; for example, it can be positioned as follows: Figure 1 As shown, the magnetic part 21 is disposed at the end of the support part 12 away from the dustproof end; or, it can also be disposed as follows: Figure 2 As shown, the magnetic part 21 is disposed at the bottom of the open space at the sealed end; or, it can be disposed as follows: Figure 3 As shown, the magnetic part 21 is provided at both the end of the support part 12 away from the dustproof end and at the bottom of the open space at the sealed end. Furthermore, the number of magnetic parts 21 is not specifically limited, such as... Figures 1 to 3 As shown, the number of magnetic parts 21 in this embodiment is one or two; however, it is not limited to this, that is, more magnetic parts 21 can be provided, for example, three magnetic parts 21 (not shown in the figure) can be provided at the bottom of the open space of the sealed end, as long as the above-mentioned technical effect of adsorbing metal impurities can be achieved.

[0031] Furthermore, the magnetic part 21 includes one or more magnets. When there is only one magnet, it forms a ring structure; when there are multiple magnets, they are arranged sequentially to form a ring structure. It should be noted that the specific structural characteristics of the magnet, such as its specifications and magnetic force, are not limited and should be determined based on the actual situation, such as the specifications of the main body 1, as long as it can attract metallic impurities.

[0032] like Figures 1 to 3As shown, the main body 1 also has a frame 41 inside, and the aforementioned magnetic part 21 is located at the end of the frame 41 away from the dustproof end. Furthermore, the sealing lip 11 has a groove, which is correspondingly connected to the elastic element 51; the dustproof end specifically includes a dustproof lip 31, a first secondary lip 32, and a second secondary lip 33. It should be noted that the frame 41, the dustproof end, the sealing lip 11, and the support part 12 are all inherent structures of existing oil seals, therefore the specific effects of this structure will not be elaborated further.

[0033] Based on the structural features of the main body 1, the main body 1 is manufactured by injection molding, that is, the skeleton 41 and the magnet are fixed at the corresponding positions in the mold, and then rubber is injected into the mold and solidified. In order to further ensure the adsorption effect of the magnetic part 21, the vertical distance between the surface of the main body 1 and the magnetic part 21 along the axial direction of the main body 1 is set to L, where 1mm≤L≤2mm.

[0034] According to the oil seal of this utility model, a magnetic part 21 is provided at the sealing end of the oil seal body 1, and the magnetic part 21 is disposed on the outside of the sealing lip 11. Thus, when lubricating oil carrying metallic impurities flows to the sealing end of the body 1, the magnetic part 21 can attract the metallic impurities, thereby keeping them away from the sealing lip 11 and the rotating shaft. This effectively prevents the sealing lip 11 from being scratched, and consequently, effectively prevents the oil seal from breaking or leaking.

[0035] According to a second aspect of the present invention, a transmission is provided in which the rotating shaft of the transmission is correspondingly fitted with an oil seal as described above, and along the axial direction of the rotating shaft, the sealing end of the oil seal (compared to the dustproof end) is closer to the interior of the transmission.

[0036] According to a third aspect of the present invention, a vehicle is provided, the vehicle including the transmission described above.

[0037] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. An oil seal having a main body, characterized in that, The two ends of the main body along the axial direction are respectively formed as a dustproof end and a sealing end. The sealing end includes a sealing lip extending away from the dustproof end, and the sealing end is also provided with a magnetic part. Along the radial direction of the main body, the magnetic part is located outside the sealing lip.

2. The oil seal according to claim 1, characterized in that, The magnetic part is formed into a ring structure.

3. The oil seal according to claim 2, characterized in that, The number of magnetic parts is one or more, and each magnetic part includes one or more magnets.

4. The oil seal according to claim 2, characterized in that, The sealing end also includes a support portion extending toward the dustproof end; along the radial direction of the body, the sealing lip is located on the inner side of the body, and the support portion is located on the outer side of the body, such that the sealing end is formed into a U-shaped structure with an opening toward the dustproof end.

5. The oil seal according to claim 4, characterized in that, Along the axial direction of the main body, the magnetic part is located at the end of the support part away from the dustproof end and / or the magnetic part is located at the bottom of the open space of the sealed end.

6. The oil seal according to claim 5, characterized in that, Along the axial direction of the main body, the vertical distance between the surface of the main body and the magnetic part is set to L, where 1mm≤L≤2mm.

7. The oil seal according to claim 1, characterized in that, The sealing lip has a groove, and an elastic element is connected to the groove.

8. The oil seal according to claim 1, characterized in that, The main body has an internal skeleton.

9. A transmission, characterized in that, The rotating shaft of the transmission is fitted with an oil seal as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, The vehicle includes the transmission as described in claim 9.

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