Attachment Clip with Projecting Portion for Insertion
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Solution Overview
Problem
Existing member attachment structures face difficulties in attaching a first member and a second member via an attachment clip due to the clip's open portion length reduction when pinched, making it hard to insert the attachment portion effectively.
Innovation Solution
The attachment structure incorporates elastically deformable plate-shaped portions with projecting and engaging features, maintaining the open portion length and facilitating easy insertion by engaging and guiding the attachment portion between the clip's plate-shaped portions, and reducing friction and abnormal sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pair of plate-shaped portions are pinched with fingers to insert the attachment portion, then the attachment portion can be inserted between them, but the free end portions move closer together reducing the open portion length making insertion difficult
Solution Approach 1:
The projecting portion is provided in advance on one plate-shaped portion to prevent the free end portions from moving too close together during the insertion process. This preliminary structural feature maintains the open portion length before insertion occurs, solving the contradiction by pre-preventing the worsening condition rather than reacting to it after pinching begins
Solution Approach 2:
The projecting portion acts as an intermediary element between the two plate-shaped portions, physically preventing them from moving closer than a certain distance. This intermediary structure maintains the necessary open portion length while still allowing the attachment portion to be inserted, resolving the contradiction between maintaining length and enabling insertion
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 configuration enhances the attachment ability of the first and second members by maintaining the open portion length, simplifying the attachment process, reducing insertion force, and minimizing abnormal sounds and friction, while ensuring secure attachment and preventing rattling.
Implementation Method 1
a pair of plate-shaped portions that are elastically deformable, extend from the distal end portion toward an opposite side from an insertion direction
Implementation Method 2
an engaging portion that is provided on an opposing surface of at least one plate-shaped portion of the pair of plate-shaped portions and that engages with the engaged portion
Implementation Method 3
an engaging claw portion that is provided on an outer surface, located on an opposite side from the opposing surface, of the at least one plate-shaped portion and that engages with an edge portion of the attachment hole
Data Source
AI summary
A member attachment structure includes: a first member on which an attachment portion equipped with an engaged portion is provided; a second member in which an attachment hole is provided; and an attachment clip equipped with a distal end portion, a pair of plate-shaped portions are disposed opposing each other with the attachment portion of the first member being inserted therebetween, an engaging portion engages with the engaged portion, an engaging claw portion engages with an edge portion of the attachment hole, and a projecting portion that is provided on the opposing surface of the plate-shaped portion and projects, in an opposing direction in which the pair of plate-shaped portions oppose each other, from an end portion side in a width direction orthogonal to a direction in which the at least one plate-shaped portion extends.