Clench Wrench Resilient Member and Block Mechanism
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Solution Overview
Problem
Existing wrench designs, such as ratcheting box wrenches and stop devices, face issues with high manufacturing costs, accidental disengagement of C-clips, and difficulty in disengaging slippery objects due to complex designs and inadequate locking mechanisms.
Innovation Solution
A clench wrench with a resilient clenching member and a block that counteracts forces to prevent disengagement, featuring a clenching device with a bendable clenching portion that moves between clenching and disengaging positions, and a ratchet wheel with a switch device for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a C-clip is used to prevent disengagement of the socket or object from the wrench, then the object is prevented from disengaging inadvertently, but the C-clip can disengage accidentally when forcing the object to disengage and it is difficult to reengage the C-clip
Solution Approach 1:
The clenching member is designed as a resilient, movable component that can dynamically switch between a clenching position (preventing disengagement) and a release position (allowing disengagement). This dynamic mechanism replaces the static C-clip, enabling easy control of the locking state through user actuation.
Solution Approach 2:
The resilient clenching member automatically returns to its clenching position after being actuated, providing self-service functionality. The member's elasticity enables it to self-reset without requiring manual reengagement, eliminating the difficulty of reattaching a C-clip.
2Reliability
If a stop member with a locking member is used to prevent work piece disengagement, then the work piece is restrained effectively, but the locking member can fail under torsion when the stop member is rotated
Solution Approach 1:
The clenching member is designed to move along a predetermined path rather than rotating with the ratchet wheel. This dynamic positioning keeps the clenching member's engagement axis aligned with the force direction, eliminating torsional loads on the locking mechanism.
Solution Approach 2:
The invention extracts the locking function from the rotating ratchet wheel system and places it on a separate, non-rotating clenching member. This separation removes the locking member from the torsional stress environment, preventing failure under rotation.
3Reliability
If a resilient C-clip is used to restrain the object, then disengagement is prevented, but additional force is required to overcome the C-clip's restraining force when the object is slippery
Solution Approach 1:
The resilient clenching member provides controlled, dynamic restraint that can be easily overridden when needed. The member's elasticity allows it to yield under sufficient force, enabling disengagement of slippery objects without requiring excessive force to overcome a rigid C-clip's restraining force.
4Reliability
If a complex ratchet wheel design with multiple openings and grooves is used to accommodate the C-clip, then the C-clip can be positioned to prevent disengagement, but the manufacturing cost increases
Solution Approach 1:
The invention extracts the clenching function from the ratchet wheel structure itself and implements it through a separate clenching member. This simplifies the ratchet wheel design by removing the need for multiple openings and grooves, thereby reducing manufacturing complexity and cost.
Solution Approach 2:
The invention segments the wrench into distinct functional components: the ratchet wheel for one-way motion control and the separate clenching member for disengagement prevention. This segmentation allows each component to be optimized independently, simplifying the ratchet wheel's structure and reducing manufacturing requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The clench wrench effectively prevents disengagement of objects while allowing effortless engagement and disengagement, improving user experience and reducing manufacturing costs by simplifying the design and enhancing grip on slippery objects.
Implementation Method 1
A clenching device configured for clenching the object is mounted on the engaging head. The clenching device includes a resilient clenching member having a fixed end fixed to the engaging head and a free end. The clenching member has a clenching portion at the free end. The free end of the clenching member is bendable
Implementation Method 2
A block is disposed on the engaging head and abuts against the clenching member and counteracts a force that causes the clenching portion to move from the first position to the second position
Implementation Method 3
a ratchet wheel with a switch device for easy operation
Data Source
AI summary
A clench wrench has a structure including a handle and an engaging head. The engaging head defines an engaging space. A clenching device is mounted on the engaging head. The clenching device includes a resilient clenching member fixed to the engaging head and having a free end. The clenching member has a clenching portion at the free end. The free end of the clenching member is bendable to selectively clench an object. A block is disposed on the engaging head and abuts against the clenching member and counteracts a force that causes the clenching portion to move from the first position to the second position.