Vehicle Handle Pin Retention via Orthogonal Elastic Rib
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Solution Overview
Problem
Existing handle devices for vehicle doors face challenges in assemblability due to interference between slip-off prevention means and vehicle body components, leading to issues with the pin falling off during vibration, especially in limited spaces between the handle case and the vehicle body.
Innovation Solution
A handle device with a cylindrical pin and elastic ribs that extend orthogonally to the pin insertion direction, providing a tapered surface to securely hold the pin in place, preventing it from slipping off while allowing easy assembly by minimizing protrusion into the surrounding space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slip-off prevention means is disposed on the outer side of the handle case to reach the top of the pin, then the pin is prevented from falling off, but the slip-off prevention means and the member on the vehicle body side interfere with each other, making assembly difficult
Solution Approach 1:
The elastic rib is configured to extend in the width direction of the handle case rather than extending outward in the direction toward the vehicle body side. This dimensional reorientation allows the rib to provide slip-off prevention functionality while maintaining a compact profile that does not interfere with adjacent vehicle body members, thereby resolving the contradiction between pin retention and assemblability
Solution Approach 2:
The slip-off prevention means is implemented as an elastic rib that can flexibly deform in the width direction of the handle case. This flexibility allows the rib to adapt to the limited space between the handle case and vehicle body members while still effectively preventing pin slippage, thus achieving both reliable pin retention and easy assembly
2Reliability
If the pin is securely held by extending slip-off prevention means to the top of the pin, then pin slippage is prevented, but the structure protrudes into the limited space between handle case and vehicle body
Solution Approach 1:
The elastic rib extends in the width direction of the handle case rather than protruding outward toward the vehicle body side. This reorientation of the extension direction eliminates unnecessary protrusion volume while maintaining effective pin retention through the rib's elastic deformation capability in the width direction
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 solution enhances assemblability and prevents pin slippage effectively, ensuring the handle device remains securely attached without interfering with the vehicle body components, thus improving overall assembly efficiency and reliability.
Implementation Method 1
the rib extends from the handle case along an in-plane direction of a case region around the pin insertion hole, and is formed of an elastic piece elastically deformed in a direction orthogonal to an insertion direction of the pin
Implementation Method 2
the head portion of the pin passes through the elastic pieces and the elastic pieces elastically return, and thereby the elastic pieces are positioned above the head portion of the pin to restrict the pin from falling off
Data Source
AI summary
A handle device includes a handle case disposed on a member on a vehicle body side, a cylindrical in supported by the handle case, and an operation member housed in the handle case and pivotally supported by the pin so as to be rotatable. The handle case includes a pin insertion hole into which the pin is configured to be inserted from an outer side of the handle case, and a rib which is provided to face a head portion of the pin inserted into the pin insertion hole and prevents the pin from slipping off. The rib extends from the handle case along as in-plane direction of a case region around the pin insertion hole, and includes an elastic piece elastically deformed in a direction orthogonal to an insertion direction of the pin.