Door Outside Handle Segmented Base for Crash Safety
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Solution Overview
Problem
In the event of a side-impact vehicle crash, existing door outside handles can inadvertently open due to inertia, posing a risk of occupants being thrown out of the vehicle and further injuries.
Innovation Solution
A door outside handle design that divides the handle base into two areas, with a hinge portion and handle lever coupled to separate bases, allowing the hinge portion to pivot inward during a crash, absorbing deformation and preventing the handle grip from being lifted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a balance weight is installed in the handle lever to counteract door opening direction, then the door can be prevented from opening due to inertia, but the handle grip may be lifted up when the door panel is deformed during a side-impact crash
Solution Approach 1:
The handle base is divided into two separate areas: a first base to which the handle lever is coupled, and a second base to which the hinge portion is coupled. This segmentation allows the second base to pivot independently during a crash, absorbing deformation while the first base maintains the balance weight function to prevent door opening due to inertia.
Solution Approach 2:
The second base is designed to perform pivotal movement toward the inside of the door when a crash occurs, allowing dynamic adaptation to door panel deformation. This dynamic movement prevents the handle grip from being lifted up while maintaining the structural integrity needed for crash safety.
2Object-affected harmful factors
If the handle base is divided into two areas to allow hinge portion separation, then deformation of the hinge portion can be absorbed, but the device complexity increases
Solution Approach 1:
The handle base is segmented into a first base and a second base connected by a connection member. This segmentation enables the hinge portion to be separated and pivot independently, absorbing deformation energy during crashes while maintaining a relatively simple overall structure that integrates smoothly into the existing door handle assembly.
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
This design effectively absorbs impact and prevents the door handle from being opened unexpectedly during a side-impact crash, reducing the risk of occupant ejection and additional injuries.
Implementation Method 1
a return spring for providing elastic force to the second base, installed around the pin in a shape of a coil
Implementation Method 2
The connection member forms a rotational axis for the pivotal movement of the second base with respect to the first base
Data Source
AI summary
A door outside handle is provided. The door outside handle includes a first base to which a handle lever connected with a handle grip is coupled; a second base which is coupled with a hinge portion of the handle grip and formed to be separated from the first base, and performs pivotal movement toward the inside of a door with respect to the first base when a crash occurs; and a connection member connecting the first base and the second base together and facilitating the pivotal movement of the second base.