Striker Mounting Structure Impact Force Dispersion
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Solution Overview
Problem
Existing striker mounting structures for vehicle doors are prone to deformation and direct impact forces during side collisions, which can cause the door to enter the passenger compartment, as they do not effectively distribute or absorb the impact load.
Innovation Solution
A striker mounting structure that includes a reinforcement member with insertion holes and a connecting rod with a locking portion and an abutment portion, which disperses the impact force by moving together with the striker, preventing direct application to the reinforcement and absorbing the force through deformation of bent portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the mounting structure is fixed directly to the reinforcement, then the impact load is directly applied to the reinforcement, but the reinforcement may be easily deformed due to the impact
Solution Approach 1:
The connecting rod acts as an intermediary component between the striker and the reinforcement. It includes a locking portion inserted into the reinforcement and an abutment portion that contacts the striker, thereby mediating the force transmission and preventing direct application of impact load to the reinforcement, resolving the contradiction between force transmission and deformation resistance
Solution Approach 2:
The mounting structure is segmented into distinct functional components: the striker, the connecting rod with locking and abutment portions, and the reinforcement with insertion holes. This segmentation allows each component to perform its specific function - the locking portion secures the structure while the abutment portion absorbs impact, preventing reinforcement deformation
2Force
If the striker mounting surface is arranged spaced apart from the reinforcement, then the impact force is dispersed, but the structural integrity may be compromised
Solution Approach 1:
The connecting rod serves as a mediator that spans the space between the striker mounting surface and the reinforcement. It transmits and distributes impact forces through its locking portion (inserted in reinforcement) and abutment portion (contacting striker), maintaining structural integrity while enabling force dispersion through the spaced arrangement
Solution Approach 2:
The connecting rod extends in the depth dimension (spaced apart from reinforcement), creating a three-dimensional force transmission path. This dimensional arrangement allows impact forces to be distributed through multiple contact points (locking portion in insertion hole, abutment portion on striker) rather than concentrated at a single point, maintaining integrity while dispersing force
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
The structure effectively prevents the door from entering the passenger compartment by indirectly applying the collision force, enhancing the resistance to impact and maintaining the striker's position, thereby improving safety and structural integrity during side collisions.
Implementation Method 1
the locking portion of the connecting rod strikes a hole wall surface of the insertion hole(s) of the reinforcement. Consequently, the force caused by the collision is not directly, but rather indirectly, applied to the reinforcement
Implementation Method 2
The impact applied to the vehicle body may thus be additionally absorbed due to the deformation of the bent portions
Data Source
AI summary
A striker mounting structure is designed to mount a striker on a vehicle body and prevent a door from entering a passenger compartment. A reinforcement provided on the vehicle body is covered by an outer panel. A striker mounting surface is arranged to be spaced away from the reinforcement in a front/backward direction of the vehicle body. The reinforcement is provided with an insertion hole opening toward a direction away from the passenger compartment. The striker and a reinforcement member are fixed to opposite sides of the striker mounting surface. A connecting rod is fixed to the reinforcement member and is formed with a locking portion extending into the insertion hole in a direction toward the passenger compartment and formed with an abutment portion. A distance between an end of the abutment portion and the passenger compartment is smaller than a distance between the striker and the passenger compartment.