Grip Device for Hexagonal Wrenches Preventing Slippage
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Solution Overview
Problem
Conventional grip devices for hexagonal wrenches often cause the wrench to slip off during rotation, making the operation awkward and inconvenient due to misalignment between the wrench and the rotary member.
Innovation Solution
A grip device with a cylindrical body, a rotary member, a resilient member, and a fastening member, featuring multiple recesses and slots that securely engage an L-shaped tool, ensuring it does not disengage during rotation by using a resilient force to maintain contact and prevent shifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hexagonal wrench is installed to the flute of the main body and the inner circumference of the first tubular body, then the wrench can be held by the grip device, but the wrench is likely to slip off from the flute when being rotated
Solution Approach 1:
The rotary member is designed to be movable relative to the main body along the axial direction, allowing dynamic adjustment between a first position (for wrench installation) and a second position (for rotation operation). This dynamic positioning enables the grip device to adapt to different operational phases, preventing wrench slippage during rotation by moving to the second position where the rotary member's outer surface contacts the wrench.
Solution Approach 2:
The rotary member acts as an intermediary element between the main body and the hexagonal wrench. It provides an additional contact surface that mediates the interaction between the wrench and the grip device, enabling secure retention during installation and smooth rotation during operation without direct contact between the wrench and the main body's flute.
2Reliability
If the user's finger contacts the lateral side of the hexagonal wrench to prevent slippage, then the wrench can be rotated without slipping, but the operation becomes awkward and inconvenient
Solution Approach 1:
The grip device is designed to provide self-retention of the hexagonal wrench through the rotary member's outer surface contacting the wrench laterally. This eliminates the need for the user's finger to manually contact and hold the wrench, allowing the device itself to perform the retention function that previously required human intervention.
3Reliability
If the rotary member is made rotatable and movable to seal the recess, then the wrench is restricted and cannot be separated, but the structure becomes more complex
Solution Approach 1:
The rotary member performs multiple functions: it guides the hexagonal wrench during installation, retains the wrench through lateral contact, enables rotation operation, and seals the recess opening. By consolidating these multiple functions into a single component, the overall structural complexity is reduced compared to using separate elements for each function.
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 grip device stabilizes the hexagonal wrench, allowing for secure and convenient operation by preventing slippage and ensuring the wrench is firmly held and rotated without shifting relative to the body.
Implementation Method 1
The resilient member is biased between the first shoulder and the head of the fastening member. The rotary member is biased by the resilient member and firmly contacts the body so that when rotating the body, the rotary member is not shifted relative to the body.
Data Source
AI summary
A grip device for hexagonal wrenches includes a body, a rotary member, a resilient member and a fastening member. The body includes an engaging portion which includes multiple recesses, multiple first slots and an axle. The rotary member is rotatably and movably mounted to the axle. The rotary member includes a first room defined in the inner periphery of the passage through which the axle extends. A first shoulder is formed between the first room and the passage. The resilient member is mounted to the axle and the fastening member is connected to the axle. An L-shaped tool has the first section thereof received in one of the recesses and the first slot of the recess. When the rotary member is moved toward the engaging portion, the first section is inserted into the first slot. The L-shaped tool is restricted by the rotary member and used as a T-bar tool.