Two-Part Door Lock Holder for Crash Load Distribution
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Solution Overview
Problem
Existing lock holders for motor vehicle door locks struggle to effectively absorb the increased forces generated by the weight of batteries in hybrid or electric vehicles during accidents, leading to material deformations and tears, particularly at the transition between the lock holder bracket and plate, which compromises the reliability of door closure and safety systems.
Innovation Solution
A two-part lock holder design with a lock holder plate and bracket featuring a locking pin, central piece with a projection along its longitudinal axis, and a connecting pin, allowing for individual adaptation to extreme loads, enhanced support through a projection and mounting web, and optimized force distribution to increase load capacity and tear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lock holder bracket is made thicker or elongated to absorb higher forces, then the load capacity increases, but material deformations and tears occur at the transition regions
Solution Approach 1:
The lock holder bracket is divided into multiple functional segments: a locking pin for engagement, a central piece with projection for force distribution, and a connecting pin for structural connection. This segmentation allows each component to handle specific loads independently, preventing stress concentration at transition zones and reducing the risk of deformation and tearing while maintaining high load capacity.
Solution Approach 2:
The central piece is equipped with a projection in the direction of its longitudinal extension, creating a localized structural enhancement at the critical transition region. This projection provides additional material strength precisely where forces are most concentrated, without requiring uniform thickening of the entire bracket, thereby preventing deformations and tears at vulnerable transition zones while maintaining overall load capacity.
2Ease of manufacture
If the lock holder is designed as a single integrated piece, then manufacturing is simpler, but the connection between bracket and plate cannot be optimized for extreme loads
Solution Approach 1:
The lock holder is designed as a two-part assembly consisting of a lock holder bracket and a lock holder plate that can be manufactured separately and then connected. This segmentation enables each component to be optimized for its specific function and connected through the locking pin, central piece, and connecting pin structure, allowing the connection to be specifically strengthened for extreme loads while maintaining manufacturing feasibility through modular production.
Data Source
AI summary
The invention relates to a lock holder (1) for a motor vehicle door lock, having a lock holder plate (2) and a lock holder bracket (3) which is secured to the lock holder plate (2). The lock holder bracket (3) is formed with a locking pin (7), a central piece (9), and a connecting pin (10), and the central piece (9) is equipped with a projection (8) in the direction of the longitudinal axis of the central piece (8). The lock holder (1) is designed in at least two parts.