Housing for a spindle gear mechanism, and spindle gear mechanism

EP4761933A1Pending Publication Date: 2026-06-24IMS GEAR SE & CO KGAA
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
IMS GEAR SE & CO KGAA
Filing Date
2025-07-24
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing spindle drives in seat longitudinal adjustment devices for motor vehicles fail to effectively counteract forward displacement of seats during a frontal collision, particularly due to premature gearbox housing failure, which compromises airbag deployment time.

Method used

A housing design for the spindle drive featuring a divided structure with angled spindle and worm shafts, reinforced with ribs and angled support sections, and optimized nut bearing seats to enhance strength and stability during crashes.

Benefits of technology

The housing design effectively resists deformation and maintains seat position during collisions, ensuring sufficient time for airbag deployment by enhancing the spindle drive's ability to counteract forward movement.

✦ Generated by Eureka AI based on patent content.

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  • Figure EP2025071384_15052026_PF_FP_ABST
    Figure EP2025071384_15052026_PF_FP_ABST
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Abstract

The invention relates to a housing (32) for a spindle spindle gear mechanism (14), having · a spindle axis (34), · two nut bearing seats (48) for the arrangement of a respective spindle nut bearing (50), · two mutually opposite end walls (52) each intersecting the spindle axis (34), · at least one lateral wall (60) oriented along the spindle axis (34), and · a screw axis (36) arranged skewed with respect to the spindle axis (34), the spindle axis (34) being arranged in an imaginary spindle plane (62) that is arranged parallel to the screw axis (36), and the at least one side wall (60) having at least one rib (68, 74, 80, 94) for reinforcing the housing (32). The invention also relates to a spindle gear mechanism (14) having a housing (32).
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