Self-cleaning bearing oil seal with diversion trench
By designing a self-cleaning bearing oil seal with a guide groove, the wear problem caused by the entry of external impurities is solved, and the self-cleaning and synchronous rotation of the inner ring of the oil seal are achieved, thus extending the service life of the bearing oil seal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-03
AI Technical Summary
During use, external impurities can easily enter between the shaft and the oil seal, leading to increased wear and affecting service life.
The design includes a self-cleaning bearing oil seal with a guide groove, comprising an outer ring, an inner ring, and a guide groove. The self-cleaning of impurities is achieved through a rotating mechanism and a locking assembly. The guide groove is spiral-shaped to discharge impurities.
The self-cleaning mechanism reduces wear on the inner ring of the oil seal, thereby extending the service life of the bearing oil seal.
Smart Images
Figure CN224079481U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of bearing oil seal technology, and more specifically, to self-cleaning bearing oil seals with guide grooves. Background Technology
[0002] Bearing oil seals are important sealing components used in bearings. They prevent the lubricating oil inside the bearing from flowing out and block the entry of external impurities, ensuring lubrication and extending the bearing's life. They consist of an oil seal body, a skeleton, a spring, etc. After installation, they clamp the journal. They can be classified in various ways and are mostly made of materials such as nitrile rubber and fluororubber. They are widely used in the automotive, machinery and other industries.
[0003] In actual use, external impurities can easily enter between the shaft and the bearing oil seal as the shaft rotates, leading to increased friction between them. This can cause significant wear on the bearing oil seal during prolonged shaft rotation, ultimately affecting its service life. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a self-cleaning bearing oil seal with a guide groove, which solves the technical problem in the prior art that external impurities can easily enter between the shaft and the bearing oil seal with the rotation of the shaft, which can easily cause significant wear to the bearing oil seal under long-term rotation of the shaft and affect the service life of the bearing oil seal.
[0005] According to one aspect, at least one embodiment of the present disclosure provides a self-cleaning bearing oil seal with a flow guide groove, comprising: an outer ring of the oil seal and a flow guide groove;
[0006] The outer ring of the oil seal is rotatably connected to the inner ring of the oil seal via a rotating mechanism, which enables the inner ring of the oil seal to rotate with the shaft.
[0007] The guide groove is formed on the inner wall of the oil seal inner ring, which can discharge impurities between the shaft and the oil seal inner ring.
[0008] Preferably, the rotating mechanism includes: a rotating box and a locking assembly;
[0009] The rotating box is fixedly connected to the inner side of the outer ring of the oil seal, and a rotating rail is slidably connected inside the rotating box to support the inner ring of the oil seal to rotate inside the outer ring of the oil seal.
[0010] The locking assembly is mounted on the rotating box and is used to fix the rotating rail inside the rotating box.
[0011] Furthermore, the locking assembly includes: a threaded hole;
[0012] The threaded hole is located on one side of the rotating box, and a locking screw is threaded into the threaded hole. One end of the locking screw contacts one side of the rotating rail.
[0013] Furthermore, the guide groove is spiral-shaped, which can discharge impurities on the shaft.
[0014] Furthermore, both the inner and outer rings of the oil seal are made of metal.
[0015] Furthermore, the outer surfaces of both the inner and outer rings of the oil seal are made of rubber.
[0016] Furthermore, one end of the locking screw has a hexagonal opening.
[0017] The beneficial effects of the embodiments disclosed herein are as follows:
[0018] In this disclosure, the cooperation between the outer ring of the oil seal, the inner ring of the oil seal, and the guide groove allows the outer ring and the inner ring of the oil seal to be locked together by a rotating assembly when impurities enter between the shaft and the inner ring of the oil seal. This keeps the inner ring of the oil seal stationary. When the shaft rotates, the impurities are pushed into the guide groove and pushed out through the guide groove, thus achieving self-cleaning of the impurities. After cleaning, the restriction on the inner ring of the oil seal is released, allowing the inner ring of the oil seal to rotate synchronously with the shaft. This reduces wear on the inner ring of the oil seal and improves the service life of the bearing oil seal. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;
[0021] Figure 2 This is a structural schematic diagram from another angle in one embodiment of the present disclosure;
[0022] Figure 3 This is a cross-sectional structural schematic diagram of the rotating box and rotating rail in one embodiment of this disclosure;
[0023] Figure 4 For one embodiment of this disclosure Figure 3 A magnified structural diagram of point A in the middle.
[0024] In the diagram: 1. Outer ring of oil seal; 2. Inner ring of oil seal; 3. Guide groove; 4. Rotating box; 5. Rotating rail; 6. Threaded hole; 7. Locking screw; 8. Hexagonal opening. Detailed Implementation
[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] like Figures 1-4 As shown, a self-cleaning bearing oil seal with a guide groove 3 is illustrated in one embodiment of this disclosure. It includes an outer ring 1 and a guide groove 3, the guide groove 3 being spiral-shaped to discharge impurities from the shaft. The inner ring 2 and outer ring 1 are both made of metal, while their outer surfaces are made of rubber. Through the cooperation between the outer ring 1, inner ring 2, and guide groove 3, when impurities enter between the shaft and inner ring 2, the outer ring 1 and inner ring 2 are locked by a rotating assembly, keeping the inner ring 2 stationary. When the shaft rotates, the impurities are pushed within the guide groove 3 and expelled, thus achieving self-cleaning. After cleaning, the restriction on the inner ring 2 is released, allowing it to rotate synchronously with the shaft, thereby reducing wear on the inner ring 2 and improving the service life of the bearing oil seal.
[0032] An inner ring 2 is rotatably connected to the outer ring 1 of the oil seal via a rotating mechanism, allowing the inner ring 2 to rotate with the shaft. A guide groove 3 is formed on the inner wall of the inner ring 2, which can discharge impurities between the shaft and the inner ring 2. The rotating mechanism includes a rotating box 4 and a locking assembly. The rotating box 4 is fixedly connected to the inner side of the outer ring 1 of the oil seal. A rotating rail 5 is slidably connected inside the rotating box 4, which can support the inner ring 2 to rotate inside the outer ring 1 of the oil seal. The locking assembly is set on the rotating box 4 and is used to fix the rotating rail 5 inside the rotating box 4. The locking assembly includes a threaded hole 6, which is formed on one side of the rotating box 4. A locking screw 7 is threadedly connected inside the threaded hole 6. One end of the locking screw 7 has a hexagonal opening 8, and one end of the locking screw 7 contacts one side of the rotating rail 5.
[0033] By tightening the locking screw 7 in the screw hole, the rotating rail 5 is fixed in the rotating box 4, so that the inner ring of the oil seal 2 is not affected by the shaft and can rotate. By loosening the locking screw 7, the limitation on the rotating rail 5 is released, so that the inner ring of the oil seal 2 can rotate synchronously with the shaft. While maintaining the seal, the wear of the inner ring of the oil seal 2 can be reduced.
[0034] The working principle is as follows: by tightening the locking screw 7, the rotating rail 5 is limited within the rotating box 4, thereby keeping the inner ring 2 of the oil seal stationary. When the shaft rotates, it pushes impurities into the guide groove 3, thus pushing the impurities out through the guide groove 3, thereby achieving self-cleaning of impurities. After cleaning, tightening the locking screw 7 moves it away from the rotating rail 5, so that the rotating shaft can drive the inner ring 2 of the oil seal, thereby reducing wear on the inner ring 2 of the oil seal.
[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A self-cleaning bearing oil seal with a guide groove, characterized in that, include: An outer ring of oil seal (1) is provided, and an inner ring of oil seal (2) is rotatably connected to the outer ring of oil seal (1) through a rotating mechanism, which enables the inner ring of oil seal (2) to rotate with the shaft. The guide groove (3) is formed on the inner wall of the inner ring (2) of the oil seal, which can discharge impurities between the shaft and the inner ring (2).
2. The self-cleaning bearing oil seal with guide groove according to claim 1, characterized in that, The rotating mechanism includes: Rotating box (4), the rotating box (4) is fixedly connected to the inner side of the outer ring (1) of the oil seal, and a rotating rail (5) is slidably connected inside the rotating box (4) to support the inner ring (2) of the oil seal to rotate inside the outer ring (1); A locking assembly is provided on the rotating box (4) for fixing the rotating rail (5) inside the rotating box (4).
3. The self-cleaning bearing oil seal with guide groove according to claim 2, characterized in that, The locking assembly includes: A threaded hole (6) is provided on one side of the rotating box (4). A locking screw (7) is threaded inside the threaded hole (6). One end of the locking screw (7) is in contact with one side of the rotating rail (5).
4. The self-cleaning bearing oil seal with guide groove according to claim 3, characterized in that, The guide groove (3) is spiral-shaped and can discharge impurities on the shaft.
5. The self-cleaning bearing oil seal with guide groove according to claim 4, characterized in that, The inner ring (2) and outer ring (1) of the oil seal are both made of metal.
6. The self-cleaning bearing oil seal with guide groove according to claim 5, characterized in that, The outer surfaces of the inner ring (2) and the outer ring (1) of the oil seal are both made of rubber.
7. The self-cleaning bearing oil seal with guide groove according to claim 6, characterized in that, One end of the locking screw (7) has a hexagonal opening (8).