Vehicle Electronic Component Holder With Self-Fixing Shaft Grip
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Solution Overview
Problem
Existing vehicle electronic component holders require time and effort to secure a desired mounting position due to the lack of a fixed relative position between the holder and the attachment screw, leading to inefficient installation.
Innovation Solution
A vehicle electronic component holder with a base portion featuring an attachment hole and a protrusion that expands outward when a shaft member is inserted, allowing for easy fixation by pressure contact, thereby securing the relative position between the holder and the shaft member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through hole with diameter larger than the shaft portion is used for attachment, then the shaft member can be inserted easily, but the relative position between the holder and the shaft member cannot be fixed
Solution Approach 1:
The protrusion is pre-formed on the peripheral wall of the attachment hole at a specific position closer to the center than the radius of the shaft member. This preliminary structural feature ensures that when the shaft member is inserted, the protrusion automatically contacts the shaft member's side surface and fixes the relative position, eliminating the need for additional positioning operations while maintaining ease of insertion.
2Ease of operation
If the through hole diameter is made larger than the shaft portion, then the shaft member can be inserted without additional tools, but the installer must manually hold the holder at the desired position until the screw is tightened
Solution Approach 1:
The protrusion on the peripheral wall automatically performs the positioning function when the shaft member is inserted. The protrusion contacts the shaft member's side surface at a predetermined position, causing the holder to self-align and self-fix to the desired position without requiring the installer to manually hold or adjust it, thus reducing installation time while maintaining tool-free insertion.
3Reliability
If the protrusion is positioned closer to the center of the attachment hole than the shaft member radius, then the shaft member is gripped by pressure contact, but the attachment hole must be expandable
Solution Approach 1:
The attachment hole is designed with an expandable structure where the peripheral wall can elastically deform outward when the shaft member is inserted. The protrusion is positioned at a distance from the center smaller than the shaft member radius, allowing the peripheral wall to be pushed outward and create pressure contact with the shaft member's side surface. This parameter change in the hole's dimensional flexibility ensures reliable fixation while maintaining a simple structural design without additional components.
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 enables easy and efficient installation of electronic components by fixing the holder to the shaft member without the need for additional tools, ensuring a stable and precise attachment.
Implementation Method 1
the peripheral wall including the protrusion is pushed and expanded outward by the shaft member, and the shaft member is gripped by the protrusion and its facing portion
Data Source
AI summary
A vehicle electronic component holder set includes a shaft member having a circular cross section, and a vehicle electronic component holder. The vehicle electronic component holder includes a base portion provided with an attachment hole through which the shaft member is inserted. The base portion includes a protrusion protruding from a peripheral wall defining the attachment hole toward an inside of the attachment hole. As viewed from the depth direction of the attachment hole, a distance between the protrusion and a center of the attachment hole is smaller than a radius of the shaft member. When the shaft member is inserted into the attachment hole, the protrusion comes into pressure contact with a side surface of the shaft member.