Vehicle Door Handle Assembly Locking Mechanism
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Solution Overview
Problem
The existing motor vehicle door handles face a challenge where the deflection lever is inadvertently released from the pre-assembly position before the handle hook is fully installed, making it impossible to complete the assembly, resulting in significant time and effort loss due to the need to disassemble and reassemble the components.
Innovation Solution
A motor vehicle door handle design that incorporates a locking element, such as a rocker, which secures the deflection lever in the pre-assembly position until the handle hook is fully inserted into its final assembly position, preventing accidental detachment and allowing for secure kinematic coupling only when the handle hook engages properly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the deflection lever is held in a pre-assembly position without a locking element, then the assembly process is simpler, but the deflection lever may be accidentally released before the handle hook is fully installed
Solution Approach 1:
A locking element is introduced as an intermediary component between the deflection lever and the handle hook. This locking element temporarily secures the deflection lever in the pre-assembly position during the installation process, preventing accidental release while allowing controlled transition to the final assembly position once the handle hook is properly installed.
Solution Approach 2:
The locking element is designed to automatically engage and secure the deflection lever in the pre-assembly position before the handle hook installation is complete. This preliminary securing action ensures the deflection lever remains stable during the assembly process, and only releases when the handle hook is fully installed and ready for final coupling.
2Reliability
If the deflection lever is secured in pre-assembly position, then accidental release is prevented, but additional locking mechanisms increase assembly complexity
Solution Approach 1:
The locking element is designed to automatically engage and lock the deflection lever in the pre-assembly position without requiring additional manual operations. The system self-secures during assembly, and the handle hook installation itself triggers the release mechanism, eliminating the need for separate locking or unlocking steps by the assembler.
Solution Approach 2:
The locking element serves as a passive intermediary that automatically manages the securing and releasing of the deflection lever based on the installation state of the handle hook, reducing the need for active operator intervention while maintaining reliable positioning.
3Productivity
If the locking element is released early, then assembly can proceed faster, but the handle hook cannot be properly mounted
Solution Approach 1:
The locking element provides preliminary securing of the deflection lever in the correct pre-assembly position, enabling the handle hook to be properly aligned and installed. This preliminary positioning ensures that when the handle hook is installed, the locking element can then be released to allow final coupling, preventing the need for disassembly and reassembly.
Solution Approach 2:
The locking element prevents premature release or movement of the deflection lever that would otherwise make handle hook installation impossible. By counteracting any premature movement or release, it ensures the components remain in the correct configuration for successful assembly.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The invention relates to a motor vehicle door-handle comprising a handle (10) able to be displaced from a rest position into an actuation position, in which a handle hook (11) arranged on the rear side of said handle (10) is kinematically coupled, when mounted, to a deflection lever (30) that acts directly or indirectly on a motor vehicle door lock during displacement from the rest position into the actuation position, said deflection lever (30) being retained in a pre-assembly position by means of a stopping element for as long as the handle hook (11) has not been brought completely into its final assembly position, and said stopping element being displaced from the stopping position into a release position by the handle hook (11) as this is brought into its assembly position.