Vehicle Door Handle Anti-Theft Locking Mechanism
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Solution Overview
Problem
Existing vehicle door handles with external levers can be easily disassembled by thieves using tools, allowing unauthorized access.
Innovation Solution
A handle design featuring a locking member with a snap connection and guide system, requiring a tool for disassembly from the inside, and a simpler assembly process, utilizing a locking mechanism that rotates within the main body and an elastic tongue for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lever is provided outside the main body for manual rotation of the locking member, then the assembling and disassembling processes are simplified, but the handle can be easily disassembled by thieves from the outside
Solution Approach 1:
A tool with a specific geometry (head portion with engagement features) is introduced as an intermediary between the external operator and the locking member. The tool must be inserted through a limited access opening and engaged with specific features on the locking member to rotate it, preventing direct manipulation by thieves while allowing authorized assembly/disassembly when the proper tool is available
Solution Approach 2:
The locking member and its engagement features are designed with asymmetric geometries that only accommodate the specific tool shape. The tool head portion has unique engagement features (such as slots, protrusions, or keyed interfaces) that match corresponding features on the locking member, creating a one-way access mechanism that prevents unauthorized disassembly from external access points
2Reliability
If the locking member is made secure against unauthorized disassembly, then security is improved, but the assembling process becomes more difficult
Solution Approach 1:
The tool is designed with pre-formed engagement features that correspond to the locking member's features. The tool head portion is pre-configured with slots, protrusions, or keyed interfaces that match the locking member, allowing the assembler to simply insert and rotate the tool without needing to manipulate complex mechanisms or use multiple steps to gain access
Solution Approach 2:
The specialized tool acts as a mediator that bridges the gap between the external operator and the secure locking mechanism. The tool's head portion engages with the locking member through a limited access opening, providing a controlled interface that maintains security while simplifying the assembly process when the proper tool is available
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
Prevents unauthorized disassembly and simplifies assembly, enhancing security and ease of use while maintaining manufacturing and maintenance accessibility.
Implementation Method 1
a guide system preferably comprising an elastic tongue, a slit, grooves and/or protrusions for simplifying the assembling process
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
Handle comprising at least one main body (1) which is suitable to be fastened to a vehicle door and is provided with a seat (2) for at least one secondary body (3) which can contain the lock of this door, wherein a locking member (5) can rotate in the main body (1) around a first axis (A) for preventing the sliding of the secondary body (3) in the seat (2) by means of a ring (6) provided with a central opening (7) in which a functional portion (8) of the secondary body (3) can be inserted, wherein the locking member (5) is provided with an extension (12) comprising a socket (13) shaped for being coupled with the head (14) of at least one tool (15) for pulling and/or pushing the extension (12), so as to rotate the locking member (5). The present invention also relates to a tool and processes for assembling or disassembling said handle.