Lip sealing device
The lip seal device addresses seal member rotation issues by using an anti-rotation mechanism with non-circular engaging portions, ensuring prolonged sealing effectiveness and preventing leakage.
JP2026109203APending Publication Date: 2026-07-01EAGLE INDS
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- EAGLE INDS
- Filing Date
- 2024-12-19
- Publication Date
- 2026-07-01
AI Technical Summary
Technical Problem
Existing lip seal devices face issues with seal member rotation due to friction reduction from permanent distortion or hardening, leading to potential leakage and reduced sealing performance over time.
Method used
A lip seal device with an annular sealing member and a sleeve that restricts rotation through an anti-rotation mechanism, utilizing non-circular engaging portions on the sleeve and fixed element to prevent relative rotation, enhancing friction and sealing effectiveness.
Benefits of technology
The anti-rotation mechanism effectively suppresses seal member rotation, maintaining sealing performance and preventing leakage over a long period by increasing frictional contact areas and simplifying the structure.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026109203000001_ABST
Abstract
To provide a lip seal device that can prevent the rotation of the sealing member over a long period of time. [Solution] The device comprises an annular sealing member 2 having a base portion 21 positioned on the fixed-side element 3 side and a lip portion 22 positioned on the rotating-side element 5 side, and a sleeve 4 that sandwiches the base portion 21 together with the fixed-side element 3, and the rotation of the sleeve 4 and the fixed-side element 3 is restricted by anti-rotation means 342, 432.
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