Shift Knob Structure With Rotating Cover Unlocking Mechanism
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Solution Overview
Problem
Existing shift knob structures require cumbersome pinching and removal methods, leading to poor workability and potential damage during maintenance, as they necessitate pinching a pin member to detach the shift knob body from the shift lever.
Innovation Solution
A shift knob structure featuring a deformable securing member locked by a single locking groove, where the cover member can be rotated relative to the shift knob body to unlock the securing member from the groove, allowing easy attachment and detachment without removing the securing member from the shift knob body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pin member is pinched with fingers to detach the shift knob body from the shift lever, then the shift knob body can be removed, but the workability deteriorates and the risk of damage increases
Solution Approach 1:
The cover member is designed to automatically deform the pin member when rotated, causing the pin member to be pushed out from the locking groove without requiring manual pinching. The system performs the unlocking action through its own structural mechanism rather than requiring external manual manipulation
Solution Approach 2:
The pin member acts as an intermediary between the cover member and the locking groove. When the cover member rotates, it deforms the pin member which then pushes against the locking groove to release the locked state, transferring the unlocking function through this intermediate component
2Ease of operation
If the cover member is moved downward to create space for pinching the pin member, then the pin member can be accessed, but the side surface of the shift lever may be damaged
Solution Approach 1:
The cover member's rotation automatically performs the function of pushing out the pin member and unlocking the locking groove, eliminating the need to move the cover member downward to create access space. The system achieves its goal through rotational deformation rather than translational movement
3Ease of repair
If the pin member is removed from the pin fitting grooves for maintenance, then the shift knob body can be detached, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The cover member's rotation automatically deforms the pin member to push it out from the locking groove, achieving detachment without requiring manual removal of the pin member from the pin fitting grooves. The system performs the maintenance-friendly operation through its own structural mechanism
Solution Approach 2:
The pin member is pre-configured with elastic deformation capability, allowing it to be pushed out when force is applied through the cover member's rotation. This preliminary design enables quick release without requiring complex disassembly procedures
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
This design enhances workability by allowing easy mounting and dismounting of the shift knob without the need to remove the securing member, reducing the risk of damage and simplifying maintenance processes.
Implementation Method 1
the securing member is unlocked from the locking groove in the shaft by rotating the cover member relative to the shaft knob body so as to deform the securing member in the direction of shaft radius
Data Source
AI summary
A shift knob structure includes a shift knob body and a cover member. Movement of the shift knob body in a direction of shaft axis is restricted by a securing member supported by a support part of the shift knob body being locked by a locking groove in the shift shaft. When the cover member is rotated relative to the shaft knob body, the securing member is deformed radially outward and the securing member is unlocked from the locking groove in the shift shaft so that the shift knob body can be removed from the shift shaft.