Ratchet Wrench Socket Positioning via Rotating Operation Ring
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Solution Overview
Problem
Conventional ratchet wrenches require significant force to position sockets due to the need for harder materials and bending of positioning rings, leading to structural weakness and potential breakage.
Innovation Solution
A ratchet wrench design featuring a collar with a slit, an engaging member, and an operation ring that allows for easy socket positioning and release without excessive deformation, using a C-clip and operation ring to facilitate socket engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clip is made by harder material to resiliently position the socket, then the positioning reliability is improved, but the operation force required increases significantly
Solution Approach 1:
The engaging member is divided into two functional parts: a resilient portion (C-clip) that provides positioning force, and an operation portion (operation ring) that transmits user input. This segmentation allows the resilient portion to be made of harder material for reliable positioning while the operation portion provides mechanical advantage to reduce user effort.
2Adaptability or versatility
If the positioning ring is bent for installation, then the adaptability is improved, but the structural strength decreases
Solution Approach 1:
The operation ring is designed to rotate within a predetermined range rather than being bent for installation. This dynamic operation mode maintains the structural integrity and strength of the ring while still providing adaptability through rotational movement for socket engagement and disengagement.
3Ease of operation
If the operation section is frequently operated to apply force in the same direction, then the ease of operation is improved, but the operation section deforms
Solution Approach 1:
The operation ring rotates in periodic cycles: clockwise rotation engages the socket, counter-clockwise rotation disengages it. This periodic bidirectional operation distributes stress evenly throughout the structure, preventing cumulative deformation that would occur with unidirectional forcing.
4Productivity
If the C-clip is frequently pushed for socket positioning, then the productivity is improved, but the C-clip may break
Solution Approach 1:
The C-clip is designed with resilient properties that allow it to dynamically absorb and recover from repeated pushing forces. The resilient portion flexes during operation and returns to its original shape, enabling frequent use without permanent deformation or breakage.
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
Enables secure and easy socket positioning with reduced user effort and minimized risk of component deformation or breakage, improving usability and structural integrity.
Implementation Method 1
the C-clip is connected to the connection portion and contacts the operation ring. When the operation ring is rotated, the second end of the engaging member is pushed to move within the through hole of the collar to removably position a socket located in the reception hole of the ratchet tube
Data Source
AI summary
A ratchet wrench includes a ratchet unit which has a ratchet tube with a reception hole. A collar is connected to one side of the head and has a slit defined radially through the collar. An engaging member has a first end thereof fixed to the collar, and a second end of the engaging member extends through the slit. The second end of the engaging member is partially located within the through hole of the collar and located above the reception hole of the ratchet tube. An operation ring is mounted to the collar and connected the engaging. A C-clip is mounted to the outer periphery of the collar. When the operation ring is rotated, the second end of the engaging member is pushed to move within the through hole of the collar to position a socket located in the reception hole of the ratchet tube.