Locking chuck reinforcement member assembly
The integration of a reinforcement member assembly in the sleeve enhances wear resistance, addressing the wear issues in chucks by reducing friction and maintaining the lock assembly's performance.
WO2026112761A1PCT designated stage Publication Date: 2026-06-04JACOBS CHUCK MANUFACTURING (SUZHOU) CO LTD +1
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- JACOBS CHUCK MANUFACTURING (SUZHOU) CO LTD
- Filing Date
- 2024-11-26
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
The wear resistance of the sleeve in chucks for drills or power drivers is reduced over time due to repeated use, affecting the performance of the lock assembly.
Method used
A reinforcement member assembly is integrated into the sleeve, made from a harder material than the sleeve, to enhance wear resistance at the cam surface where tabs contact, covering the entire cam surface or restricted to corners/edges, improving the lock assembly's performance.
Benefits of technology
The reinforcement member assembly increases the sleeve's resistance to wear, maintaining the lock assembly's performance by reducing the friction and contact forces, making it easier to transition between locked and unlocked states.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2024134437_04062026_PF_FP_ABST
Abstract
A lock assembly for a chuck may include a sleeve which may have an exterior surface and an interior surface, a bearing assembly which may include an inner race, an outer race, a ratchet and a pawl biased toward the ratchet, and a reinforcement member assembly operably coupled to the interior surface of the sleeve. The lock assembly may be transitionable between an unlocked state in which jaws may be movable and a locked state in which jawsmay be fixed. The interior surface of the sleeve may include a sleeve cam, a first recess, and a second recess. The sleeve cam may bias the pawl radially inward, out of the first or second recess, while the lock assembly transitions between the locked and unlocked states. The reinforcement member assembly is disposed proximate to, and does not extend to a base of, the first and second recesses.
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