Joint inner part for an opposite-way joint

The inner joint part of the counter-track joint addresses stress distribution issues by incorporating recesses and uniform radial thickness, improving fatigue resistance and service life through optimized stress distribution.

DE102024135686A1Pending Publication Date: 2026-06-03GKN DRIVELINE ZUMAIA SA
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
GKN DRIVELINE ZUMAIA SA
Filing Date
2024-12-02
Publication Date
2026-06-03

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Abstract

The invention relates to an inner joint part (13) for a counter-track joint, comprising: a through-opening (21) with an engagement structure (38) for inserting a drive shaft (30) from the front side (20) and with an axial locking structure (31) towards the rear side (19); first ball tracks (23A) inclined towards the front side (20); second ball tracks (23B) inclined towards the rear side (19), wherein the inner joint part (13) has recesses (32) on the front side (20) at least in circumferential sections with the second ball tracks (23B) relative to the track base, wherein the radial thickness (RB20) formed between the recess (32) and the through-opening (21) is less than 1.3 times the smallest radial thickness (RA20) formed on the front side (20) between the first ball tracks (23A) and the through-opening (21). The invention further relates to a counter-track joint (2) with such a joint inner part (13).
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Citation Information

Patent Citations

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    JP2008095804A

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    JP2008249070A

  • Fixed type constant velocity universal joint

    JP2008267478A

  • Counter track joint

    US20140206463A1

  • Counter track joint

    WO2013029655A1