Shear Wrench Head Locking Sleeve for Tool-Free Chuck Replacement
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Solution Overview
Problem
Conventional shear wrenches require tools to disassemble and reassemble the chuck, making the replacement process time-consuming and prone to errors if tools are not readily available.
Innovation Solution
A shear wrench structure featuring a body with an inner sleeve, a chuck unit, a central sleeve portion with locking members, and an outer sleeve portion that allows for tool-free replacement by using a locking mechanism that snaps into place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw fixing elements are used to secure the chuck, then the chuck can be firmly fixed on the main machine portion, but the replacement process becomes time-consuming and requires additional tools
Solution Approach 1:
The locking mechanism is divided into a locking member with a locking end and a corresponding locking groove, allowing the chuck to be secured through a snap-fit connection rather than requiring threaded fasteners. This segmentation enables quick engagement and disengagement while maintaining secure fixation.
Solution Approach 2:
The locking member is designed to be manually operable without requiring additional tools. The user can directly engage or disengage the locking member by hand, making the chuck replacement process self-service and eliminating the need for screwdrivers or other tooling.
2Reliability
If screw fixing elements are used to secure the chuck, then the chuck can be firmly fixed on the main machine portion, but the operation becomes troublesome when tools are not readily available
Solution Approach 1:
The locking mechanism is designed for direct manual operation. The locking member can be engaged or disengaged by hand without requiring screwdrivers, Allen keys, or any other external tools, making the operation simple and accessible in any work environment.
Solution Approach 2:
The complex threading and fastening operations are extracted and replaced with a simple snap-fit locking mechanism. This removes the dependency on tool-based operations and simplifies the user interaction to basic manual movements.
3Reliability
If screw fixing elements are used to secure the outer sleeve portion, then the outer sleeve portion can be firmly fixed on the main machine portion, but parts and components may fall off to cause damage if not screwed properly
Solution Approach 1:
The locking member is designed as a simple, robust component that provides reliable locking through a snap-fit mechanism rather than relying on precision threading. This simpler design reduces the risk of improper assembly and subsequent part failure.
Solution Approach 2:
Instead of using threaded fasteners that require precise rotation and tightening, the locking mechanism uses a direct insertion and engagement approach where the locking member snaps into place, providing immediate and reliable fixation without the risk of under-tightening or over-tightening.
Data Source
AI summary
A structure for replacing shear wrench head comprises a body having an inner sleeve portion, a ring groove disposed around the inner sleeve portion and a first assembly portion disposed on the inner sleeve portion; a chuck unit having a second assembly portion assembled with the first assembly portion; a central sleeve portion having at least one through hole with a locking member provided therein, a stop portion protruding inwardly is provided on the central sleeve portion; when the stop portion wedges with the first and second assembly portions, a position of the through hole approximately overlaps with the ring groove of the inner sleeve portion, so that locking members can be disposed between the ring groove and the through hole; and an outer sleeve portion slidably disposed on the central sleeve portion, and capable of optionally restricting the locking members from moving outwardly.