Vehicle Door Handle Blocking Piece Design for Anti-Theft
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Solution Overview
Problem
Existing handle apparatuses face challenges in preventing illegal operations through arm insertion holes without compromising design freedom, as wide gaps between blocking portions and insertion holes allow tools to be inserted in a slanted path, and flat plate-like blocking portions can interfere with other components, reducing design flexibility and being used as guides for tool insertion.
Innovation Solution
A handle apparatus featuring a rising piece and blocking wall that erects from the swing lever's side edge, positioned to create a regulation wall and prevent tool insertion along the blocking piece, while the blocking wall from the handle base further blocks tool access, allowing for a more flexible design without needing to position the blocking piece close to the insertion hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blocking portion is arranged close to the opening end of the arm insertion hole to prevent tool insertion, then illegal operation prevention is improved, but the swing lever interferes with other components reducing design freedom
Solution Approach 1:
The blocking portion is changed from a flat plate shape to a three-dimensional structure with a front surface and a rear surface positioned at different depths. The rear surface is arranged close to the opening end of the arm insertion hole to effectively block tool insertion paths, while the front surface is positioned farther away to avoid interference with other components. This dimensional separation allows the blocking portion to simultaneously achieve effective illegal operation prevention and maintain design freedom for other components.
2Reliability
If a flat plate-like blocking portion is used to block the insertion hole, then illegal operation prevention is improved, but the blocking portion can be used as a guide for tool insertion
Solution Approach 1:
The blocking portion is designed with a three-dimensional structure having both a front surface and a rear surface at different depths, rather than a simple flat plate. This multi-surface configuration disrupts the linear guidance path that tools would follow along a flat surface, while still maintaining effective blocking capability through the rear surface positioned near the insertion hole opening.
3Adaptability or versatility
If the blocking portion is positioned far from the insertion hole to avoid interference, then design freedom is improved, but tools can be inserted in a slant direction through wide gaps
Solution Approach 1:
By utilizing the depth dimension, the blocking portion's rear surface is positioned close to the insertion hole opening while the front surface extends farther out. This allows the blocking function to be effective at the critical location (near the opening) without the entire structure interfering with other components, thus resolving the contradiction between security effectiveness and design freedom.
Data Source
AI summary
A handle apparatus is provided with: a handle base (3) fixed to a door (2) of a vehicle; a swing lever (4) held inside the door (2) and connected to the handle base (3) to be vertically rotatable; a handle main body (7) including an operation arm (5) inserted inside the door (2) through an arm insertion hole (6) to drive the swing lever (4); a blocking piece (8) on the swing lever (4) for blocking the arm insertion hole (6) from an inside of the door (2); and a rising piece (11) protruding from a side edge of the blocking piece (8) toward an outside of the door (2).