Waterproof Component Locking Claw Displacement Prevention
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Solution Overview
Problem
Waterproof components for electric wires routed over wet and waterproof areas face issues with excessive deformation and durability of locking claws, leading to potential damage when inserted into attachment holes or subjected to external forces.
Innovation Solution
A waterproof component design featuring a housing body with an attachment hole insertion portion, a mat seal with electric wire press-fitting holes, and a mat seal cover with excessive displacement prevention walls, which prevent excessive deformation of locking claws by engaging with the mat seal cover's protrusions, enhancing durability through elastic deformation management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking claw is made elastically deformable to enable insertion into the attachment hole, then the ease of operation is improved, but the locking claw may be excessively deformed and damaged, reducing its strength and durability
Solution Approach 1:
The mat seal cover is provided with an excessive displacement prevention wall at the specific location where the locking claw is elastically deformed during insertion. This localized structural feature prevents excessive deformation only at the critical area while maintaining the overall elastic deformability of the locking claw for successful insertion.
2Strength
If the locking claw is made more rigid to prevent damage, then the strength is improved, but the ease of insertion into the attachment hole deteriorates
Solution Approach 1:
The excessive displacement prevention wall is provided only at the specific location where the locking claw undergoes elastic deformation during insertion, rather than making the entire locking claw structure rigid. This localized approach maintains the necessary flexibility for insertion while providing protection against excessive deformation.
3Ease of operation
If the locking claw is designed to be elastically deformable for insertion, then the ease of operation is improved, but the reliability of the locking mechanism deteriorates due to potential damage
Solution Approach 1:
The excessive displacement prevention wall is provided in advance on the mat seal cover at the location where the locking爪 undergoes elastic deformation. This preventive structure cushions against excessive deformation before it can cause damage, thereby maintaining the reliability of the locking mechanism while preserving the ease of insertion.
4Strength
If the excessive displacement prevention wall is added to the mat seal cover, then the locking claw durability is improved, but the device complexity increases
Solution Approach 1:
The excessive displacement prevention wall is added only at the specific location where the locking爪 undergoes elastic deformation during insertion, rather than redesigning the entire mat seal cover. This localized modification minimizes the increase in device complexity while effectively preventing excessive deformation and improving locking爪 durability.
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 design effectively prevents excessive deformation and improves the durability of locking claws, ensuring reliable sealing and resistance to external forces, thereby maintaining the waterproof effect and extending the component's lifespan.
Implementation Method 1
a locking claw provided in an elastically deformable manner on an insertion tip side of the attachment hole insertion portion
Implementation Method 2
The mat seal cover interposes the mat seal between the mat seal cover and the bottom wail to hold the mat seal in the mat seal accommodating chamber
Implementation Method 3
The mat seal cover is provided with an excessive displacement prevention wall on a side where the locking claw is elastically deformed when the locking claw is inserted into the attachment hole
Data Source
AI summary
A waterproof component includes a housing body, a mat seal, and a mat seal cover. The housing body includes an attachment-hole-insertion portion having a mat-seal-accommodating chamber, an abutting portion configured to abut a first peripheral surface of the attachment hole, a locking claw provided on an insertion tip side of the attachment hole insertion portion, the locking claw to he locked to a second peripheral surface of the attachment hole, and a cover locking portion provided on an insertion tip side of the attachment-hole-insertion portion. The mat seal has an electric wire press-fitting hole. The mat-seal-accommodating chamber accommodates the mat seal. The mat seal cover locks to the cover-locking portion, the mat seal cover interposes the mat seal between the mat seal cover and a bottom wall of the mat-seal-accommodating chamber. The mat seal cover includes an excessive-displacement-prevention wall, which prevents excessive elastic deformation of the locking claw.