High-speed oil seal suitable for reverse rotation
By designing a multi-stage barrier structure in a high-speed oil seal, including the front section of the lip, the oil barrier sheet and the hemispherical groove, the lubricant leakage problem of the traditional oil return line during reversal is solved, and an efficient lubricant sealing effect is achieved.
Patent Information
- Application Number
- CN202420997703.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The traditional oil return line will cause suction when it reverses, resulting in lubricating oil leakage.
A high-speed oil seal suitable for reversal was designed, using an oil seal rubber body, support ring, lip front section, cavity, oil barrier sheet, hemispherical groove, dustproof ring and annular frame, through these structures, it is produced when the shaft is reversed. Multi-stage barrier and sealing effect to prevent lubricating oil leakage.
It effectively prevents the leakage of lubricant, realizes multi-stage sealing of lubricant at high speed, and improves the sealing performance of the oil seal.
Smart Images
Figure CN222351449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil seals, in particular to a high-speed oil seal suitable for reversal. Background Art
[0002] In the new energy vehicle environment, the speed of the power output shaft is getting higher and higher, and can even reach about 17,000 rpm. The spiral oil return line of the oil seal lip can have a good oil pumping capacity, but the reverse speed of the power output shaft can also reach about 5,000 rpm.
[0003] The traditional oil return line will produce suction when it is reversed, causing lubricating oil leakage. Therefore, it is necessary to design and modify the high-speed oil seal suitable for reversal to effectively prevent the lubricating oil leakage when it is reversed. Utility Model Content
[0004] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide a high-speed oil seal suitable for reversal, which has the advantage of being suitable for reversal and solves the problem that the traditional oil return line will produce suction when reversing, causing lubricating oil leakage.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed oil seal suitable for reversal, comprising a rotating shaft, the surface of the rotating shaft is sleeved with an oil seal rubber body, the top and bottom of the oil seal rubber body are fixedly connected to a support ring, the surface of the support ring is fixedly connected to a lip front section, the lip front section is movably connected to the rotating shaft, the inner wall of the oil seal rubber body is provided with a cavity, the top and bottom of the cavity are fixedly connected to an oil baffle, the oil baffle is movably connected to the rotating shaft, the top and bottom of the inner wall of the cavity are fixedly connected to a limiting block, and the limiting block is fixedly connected to the oil baffle.
[0006] As a preferred embodiment of the present invention, the inner wall of the oil seal rubber body is provided with a hemispherical groove.
[0007] As a preferred embodiment of the utility model, a dustproof ring is fixedly connected to the inner wall of the cavity, a hemispherical protrusion is fixedly connected to the inner wall of the dustproof ring, and the hemispherical protrusion is movably connected to the rotating shaft.
[0008] As a preferred embodiment of the present invention, an annular skeleton is provided inside the oil seal rubber body.
[0009] As a preferred embodiment of the present invention, the front section of the lip is vertically arranged.
[0010] As the preferred embodiment of the present invention, the described.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] 1. The utility model adopts an interference fit between the front section of the lip and the rotating shaft. The front section of the lip generates a clamping force on the rotating shaft, which blocks the lubricating oil when the rotating shaft is reversed. At the same time, the inner wall of the oil seal rubber body is provided with a hemispherical groove, thereby performing a second-level blocking of the lubricating oil. By setting the oil baffle, the lubricating oil can be blocked at the third level when the rotating shaft is reversed. The device has the advantage of being suitable for reversal.
[0013] 2. The utility model can perform multi-stage sealing of the lubricating oil when the shaft rotates forward or reversely by setting the hemispherical groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a front cross-sectional schematic diagram of the lip front section structure of the utility model;
[0016] Figure 3 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;
[0017] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.
[0018] In the figure: 1. rotating shaft; 2. oil seal rubber body; 3. supporting ring; 4. front section of lip; 5. cavity; 6. oil baffle; 7. limit block; 8. hemispherical groove; 9. dust ring; 10. hemispherical protrusion; 11. annular skeleton. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] like Figures 1 to 4 As shown, a high-speed oil seal suitable for reversal includes a rotating shaft 1, an oil seal rubber body 2 is sleeved on the surface of the rotating shaft 1, the top and bottom of the oil seal rubber body 2 are fixedly connected with a support ring 3, the surface of the support ring 3 is fixedly connected with a lip front section 4, the lip front section 4 is movably connected to the rotating shaft 1, the inner wall of the oil seal rubber body 2 is provided with a cavity 5, the top and bottom of the inside of the cavity 5 are fixedly connected with an oil baffle 6, the oil baffle 6 is movably connected to the rotating shaft 1, the top and bottom of the inner wall of the cavity 5 are fixedly connected with a limiting block 7, and the limiting block 7 is fixedly connected to the oil baffle 6.
[0021] refer to Figure 2and Figure 4 The inner wall of the oil seal rubber body 2 is provided with a hemispherical groove 8.
[0022] As a technical optimization solution of the utility model, by setting the hemispherical groove 8, the lubricating oil can be sealed in multiple stages when the rotating shaft 1 rotates forward or reversely.
[0023] refer to Figure 2 and Figure 4 A dustproof ring 9 is fixedly connected to the inner wall of the cavity 5 , a hemispherical protrusion 10 is fixedly connected to the inner wall of the dustproof ring 9 , and the hemispherical protrusion 10 is movably connected to the rotating shaft 1 .
[0024] As a technical optimization solution of the utility model, by providing the dustproof ring 9 and the hemispherical protrusion 10 , the hemispherical protrusion 10 contacts the rotating shaft 1 , thereby preventing dust in the external environment from penetrating the oil seal rubber body 2 .
[0025] refer to Figure 2 and Figure 4 An annular skeleton 11 is arranged inside the oil seal rubber body 2 .
[0026] As a technical optimization solution of the present invention, the annular skeleton 11 is provided to improve the support of the oil seal rubber body 2, so that the oil seal rubber body 2 is not easily deformed.
[0027] refer to Figures 1 to 4 , the front lip section 4 is arranged vertically.
[0028] As a technical optimization solution of the utility model, the lip front section 4 is vertically arranged so that the lip front section 4 can be interference fit with the shaft 1. The lip front section 4 generates a clamping force on the shaft 1, blocking the lubricating oil when the shaft 1 reverses.
[0029] refer to Figures 1 to 4 , the support ring 3 is cut from a BR rubber ring.
[0030] As a technical optimization solution of the utility model, the support ring 3 cut from the BR rubber ring has the advantage of high elasticity.
[0031] The working principle and use process of the utility model are as follows: when in use, the lip front section 4 is interference fit with the rotating shaft 1, and the lip front section 4 generates a clamping force on the rotating shaft 1, which blocks the lubricating oil when the rotating shaft 1 reverses. At the same time, the inner wall of the oil seal rubber body 2 is provided with a hemispherical groove 8, thereby performing a second level of blocking of the lubricating oil. By setting the oil baffle plate 6, the lubricating oil can be blocked at the third level when the rotating shaft 1 reverses.
[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-speed oil seal suitable for reverse rotation, comprising a rotating shaft (1), characterized in that: The surface of the rotating shaft (1) is sleeved with an oil seal rubber body (2), the top and bottom of the oil seal rubber body (2) are fixedly connected to a support ring (3), the surface of the support ring (3) is fixedly connected to a lip front section (4), the lip front section (4) is movably connected to the rotating shaft (1), the inner wall of the oil seal rubber body (2) is provided with a cavity (5), the top and bottom of the cavity (5) are fixedly connected to an oil baffle (6), the oil baffle (6) is movably connected to the rotating shaft (1), the top and bottom of the inner wall of the cavity (5) are fixedly connected to a limit block (7), and the limit block (7) is fixedly connected to the oil baffle (6).
2. A high-speed oil seal suitable for reversal according to claim 1, characterized in that: The inner wall of the oil seal rubber body (2) is provided with a hemispherical groove (8).
3. A high-speed oil seal suitable for reversal according to claim 1, characterized in that: A dustproof ring (9) is fixedly connected to the inner wall of the cavity (5), a hemispherical protrusion (10) is fixedly connected to the inner wall of the dustproof ring (9), and the hemispherical protrusion (10) is movably connected to the rotating shaft (1).
4. A high-speed oil seal suitable for reverse rotation according to claim 1, characterized in that: An annular skeleton (11) is arranged inside the oil seal rubber body (2).
5. The high-speed oil seal suitable for reversal according to claim 1, characterized in that: The lip front section (4) is arranged vertically.
6. A high-speed oil seal suitable for reversal according to claim 1, characterized in that: The support ring (3) is cut from a BR rubber ring.