sealing device
The sealing device with a metal retaining ring, seal lip, and conductive lip arrangement addresses heat-induced deterioration, ensuring effective sealing and conductivity while suppressing electromagnetic noise.
JP7864146B2Active Publication Date: 2026-05-22NOK CORP
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NOK CORP
- Filing Date
- 2024-02-09
- Publication Date
- 2026-05-22
AI Technical Summary
Technical Problem
Conductive sealing members used to suppress electromagnetic noise in electric vehicles face deterioration due to heat generation from high-speed sliding, leading to reduced sealing and conductive performance.
Method used
A sealing device comprising a metal retaining ring, a seal lip, and a conductive lip arranged diagonally with respect to the axis, separated in the axial direction, and fixed to the retaining ring, which includes screw grooves for a pumping action to reduce sliding heat generation and enhance conductivity.
Benefits of technology
Prevents deterioration from heat generation, maintains sealing and conductive performance, and reduces electromagnetic noise by minimizing sliding heat and improving conductivity without increasing space or cost.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 0007864146000001 
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Abstract
To provide a sealing device which can prevent deterioration caused by heat generation.SOLUTION: A sealing device 1 includes: a metal retaining ring 10 having an annular shape along an axis; a seal lip 20 fixed to the retaining ring 10 at the outer periphery side and having an annular shape along the axis, the seal lip 20 having a seal part 21 which extends obliquely relative to the axis, forming an inner periphery side end, and having a first inner peripheral surface 22, which comes into contact with an inner periphery side member, at the inner periphery side; and a conductive lip 30 fixed to the retaining ring 10 at the outer periphery side and having an annular shape along the axis and conductivity, the conductive lip 30 having a contact part 31 which extends obliquely relative to the axis, forming an inner periphery side end, and having a second inner peripheral surface 32, which comes into contact with the inner periphery side member, at the inner periphery side. The seal lip 20 and the conductive lip 30 are spaced apart from each other in an axial direction at least at the seal part 21 and the contact part 31.SELECTED DRAWING: Figure 1
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