Insert Holder Assembly With Dual Housing for Secure Retention
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Solution Overview
Problem
Existing mounting parts face issues such as insert loss during handling, precise dimensioning requirements, limited pullout force, and risk of projection breakage due to high mechanical stress, especially when made of plastic with metallic inserts.
Innovation Solution
An assembly comprising a holder with a second housing accessible from a different direction than insertion, featuring protrusions for robust locking and a divider to prevent movement, allowing easy assembly without complex tools and ensuring secure attachment against significant forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an insert is merely inserted into a through-hole of a fixing connector, then the assembly is simple and cost-effective, but the insert can be lost during handling and transport
Solution Approach 1:
The through-hole is divided into two distinct portions: a first portion serving as the insertion path and a second portion serving as the retention chamber. This segmentation allows the insert to be easily inserted while preventing it from falling out, as the second portion is not accessible from the outside once the insert is in place.
Solution Approach 2:
The solution transitions from a single-dimensional through-hole to a two-dimensional structure with distinct first and second portions. The insert is inserted through the first portion in one direction but is retained by the second portion which is not accessible from the outside, effectively using dimensional differentiation to solve the retention problem.
2Reliability
If the insert is precisely dimensioned to fit the through-hole, then the fixing is reliable, but the insertion becomes difficult if too large or risky if too small
Solution Approach 1:
The first portion of the through-hole is designed with dimensions that facilitate easy insertion of the insert, while the second portion is designed with dimensions that ensure reliable retention. This local differentiation of dimensional qualities allows the insert to be both easily inserted and securely fixed without requiring precise overall dimensioning.
3Reliability
If a projection is used to engage the insert, then the insert can be locked in place, but the projection may break under high mechanical stress
Solution Approach 1:
The problematic projection is completely removed from the design. Instead of using a projection that extends outward and is susceptible to breakage, the solution uses a blind hole structure where the second portion is not accessible from the outside, eliminating the need for protruding engagement features that could break under stress.
4Ease of operation
If the projection extends entirely outward from the inner wall, then engagement is possible, but the risk of breakage increases
Solution Approach 1:
Instead of extending the engagement feature outward from the wall (projection), the solution inverts the approach by creating a recessive feature (blind hole second portion) that is not accessible from the outside. This inversion eliminates the structural weakness of protruding elements while maintaining engagement capability through the confined second portion.
Data Source
Figure 1
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AI summary
A holder (10) for an insert (20), comprising : - a first housing (11) for receiving the insert (20), the first housing (11) extending within a plane (P) of the holder (10), - an opening (13) for inserting, substantially perpendicularly to said plane (P), the insert (20) into the first housing (11), and - a second housing (12) for receiving said insert (20), the second housing (12) being in communication with the first housing (11), characterized in that the second housing (12) extends within the plane (P) of the holder (10) and is configured to prevent movement of the insert (20) out of the holder (10), in directions perpendicular to the plane (P).