Rotating suspension stop with embedded seal

The rotating suspension stop with a single-material elastic sealing gasket and complementary moldings addresses sealing and axial retention issues, ensuring low friction torque and effective sealing performance under varying conditions.

FR3159558B1Active Publication Date: 2026-03-27NTN EUROPE
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Patent Information

Application Number
FR2024001825
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-02-25
Publication Date
2026-03-27
Estimated Expiration
2044-02-25

AI Technical Summary

Technical Problem

Existing rotating suspension stops face challenges in achieving effective sealing and axial retention without increasing friction torque or requiring tight manufacturing tolerances, especially under conditions of pressure washing and thermal fluctuations.

Method used

A rotating suspension stop design featuring a single-material elastic sealing gasket with a body and annular sealing lip, utilizing recessed or raised moldings for mechanical fastening, allowing elastic deformation and separation of fastening and sealing functions, and a cover with complementary moldings for form-locking attachment, ensuring low friction torque and resistance to pressurized liquid intrusion.

Benefits of technology

The solution provides economical sealing and axial retention with low friction torque, maintaining sealing performance under thermal fluctuations and pressure washing conditions, while simplifying assembly and reducing geometric defects.

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Abstract

A rotating suspension stop (10) for a suspension leg comprises: a bearing (18), a lower support (12), a seal seat (38), and a cover (20). The cover (20) has an annular skirt (46) with a mounting face (95) radially aligned with and at a distance from the seal seat (38) and / or the bearing (18). It also includes a single-material elastic seal (56) with a body (58) fixed to the mounting face (95) of the cover (20) and at least one annular sealing lip (60) projecting from the body (58) to the seal seat (38). A contact face (94) of the body (58) with the mounting face (95) has at least one radially recessed or raised molding (70) that forms a recess with a corresponding molding (71) of the mounting face (95). (Shortcut figure: 1)
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