Magnetic permeable sealing end cover
By designing a magnetically permeable sealing end cap, using the combination of magnetically permeable material and static sealing bumps, the problem of signal failure caused by the magnetic induction ring being easily adsorbed to small iron filings is solved, and the dual effects of sealing and signal transmission are achieved.
Patent Information
- Application Number
- CN202422478491.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing magnetic induction rings are prone to adsorbing small iron filings on the circuit, resulting in signal failures and false alarms of the ECU electronic control unit.
Design a magnetically permeable sealing end cap, a skeleton made of magnetically permeable material, combined with static sealing bumps and protective layers to ensure sealing effect and allow magnetic signals to pass through.
It achieves the effect of sealing and anti-silt water and dust, and at the same time enables the internal magnetic sensing ring to output signals normally, avoiding signal failures and false alarms.
Smart Images
Figure CN223035527U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of end covers and relates to a magnetic-permeable sealing end cover. Background Art
[0002] Generally, a magnetic induction ring, an induction ring assembly, etc. are installed inside an automotive wheel hub bearing. The magnetic induction head obtains the wheel speed signal by reading the signal of the induction magnetic ring. However, the magnetic induction ring generally has magnetism and can adsorb ferrous metals. Therefore, during driving, small iron filings on the road are likely to splash into the vicinity of the magnetic induction ring and be adsorbed by the magnetic induction ring. If the accumulation amount of the iron filings reaches a certain level, it will cover the areas of several magnetic poles on the magnetic induction ring, affecting the signal reception of the magnetic induction sensor head, thereby causing a wheel speed signal failure, leading to many ECU electronic control units that reference this signal to enter the failure mode and causing false alarms. Therefore, it is necessary to design a magnetic-permeable sealing end cover to solve the above problems. Summary of the Invention
[0003] The purpose of the utility model is to provide a magnetic-permeable sealing end cover for the existing technologies with the above problems.
[0004] To achieve the above purpose, the technical solution of the utility model is: a magnetic-permeable sealing end cover, including a skeleton. The skeleton is made of a magnetic-permeable material. The skeleton includes a cap part in a frustum shape. A working ring part matched with a magnetic ring is connected to the cap part. An installation ring part for its installation is connected to the working ring part. And there is an inclined surface part at the connection of the working ring part and the installation ring part. A sealing body is connected to the inclined surface part. The sealing body has static sealing convex points protruding outwards. The surface of the static sealing convex points extends beyond the surface of the working ring part.
[0005] A protective layer is provided on the surface of the static sealing convex points.
[0006] The material of the protective layer is polytetrafluoroethylene.
[0007] The material of the sealing body is rubber.
[0008] The skeleton is integrally formed.
[0009] By adopting the above technical solution, the beneficial effect of the utility model is:
[0010] The utility model can not only play the role of sealing to prevent mud and dust, but also enable the internal magnetic induction ring to output signals through the end cover. Brief Description of the Drawings
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] In the figure, 1 is the framework; 1a is the cap part; 1a is the working ring part; 1c is the mounting ring part; 1d is the inclined surface part; 2 is the sealing body; 2a is the static sealing bump; 2a1 is the protective layer; 3 is the internal magnetic induction ring. Detailed implementation mode
[0013] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail through specific embodiments below.
[0014] As Figure 1 shown, this magnetic-permeable sealing end cover includes a framework 1. The framework 1 is made of magnetic-permeable material. At the same time, the framework 1 is integrally formed, that is, it is processed from existing materials using existing technologies, which can enable the magnetic signal inside the unit to be transmitted through this end cover. The framework 1 includes a cap part 1a in the shape of a frustum of a cone. A working ring part 1a that cooperates with the magnetic ring is connected to the cap part 1a. A mounting ring part 1c for its installation is connected to the working ring part 1a. And there is an inclined surface part 1d at the connection of the working ring part 1a and the mounting ring part 1c. A sealing body 2 is connected to the inclined surface part 1d. The material of the sealing body 2 is rubber. The sealing body 2 is connected to the inclined surface part 1d through the existing vulcanization process. The sealing body 2 has static sealing bumps 2a protruding outwards. The surface of the static sealing bumps 2a exceeds the surface of the working ring part 1a. With this structure, by using the static sealing bumps 2a, the sealing can be strengthened to prevent muddy water from invading.
[0015] A protective layer 2a1 is provided on the surface of the static sealing bumps 2a. The protective layer 2a1 is coated in the existing manner.
[0016] The material of the protective layer 2a1 is polytetrafluoroethylene. Through the protective layer 2a1, it can have good heat resistance, weather resistance and acid and alkali resistance, so as to be better applicable to various environments.
[0017] This magnetic-permeable sealing end cover of the present invention cooperates with the existing internal magnetic induction ring 3 to form a closed structure, effectively reducing the invasion of muddy water. At the same time, it can enable the internal magnetic induction ring to output signals through this end cover. The magnetic-permeable sealing end cover adopts outer diameter assembly and a static sealing bump 2a to effectively prevent the invasion of muddy water, which is simpler and more convenient than the traditional sealing component.
[0018] The above components are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.
[0019] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.
Claims
1. A magnetically permeable sealing end cover, comprising a frame (1), the frame (1) being made of a magnetically permeable material, the frame (1) comprising a truncated cone-shaped cap portion (1a), the cap portion (1a) being connected to a working ring portion (1b) matched with a magnetic ring, the working ring portion (1b) being connected to a mounting ring portion (1c) for mounting the working ring portion, and a slanted surface portion (1d) being provided at a connection between the working ring portion (1b) and the mounting ring portion (1c), the slanted surface portion (1d) being connected to a sealing body (2), the sealing body (2) being provided with a static sealing protrusion (2a) protruding outward, the surface of the static sealing protrusion (2a) exceeding the surface of the working ring portion (1b).
2. A magnetically permeable sealing end cover according to claim 1, characterized in that: A protective layer (2a1) is provided on the surface of the static sealing protrusion (2a).
3. A magnetically permeable sealing end cover according to claim 2, characterized in that: The material of the protective layer (2a1) is polytetrafluoroethylene.
4. The magnetically permeable sealing end cover according to claim 1, characterized in that: The material of the sealing body (2) is rubber.
5. The magnetically permeable sealing end cover according to claim 1, characterized in that: The frame (1) is formed in one piece.