Watertight Cap with Reinforced Insertion and Hook Engagement
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Solution Overview
Problem
Existing watertight caps for electronic devices rely on uniform elastic deformation of the installing part to maintain a seal, which can lead to clearance gaps and slippage if deformation is not uniform, compromising the watertight seal and ease of use.
Innovation Solution
A watertight cap design featuring a cap body with an insertion part having elastic force, a watertight projection, a reinforce member to prevent inward deformation, and a hook part that engages with the edge of the through hole, ensuring secure sealing and preventing slippage by resiliently pressing against the hole's surface and engaging with the edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the installing part relies on uniform elastic deformation to maintain watertight seal, then the seal can be achieved, but any non-uniform deformation produces clearance gaps and causes slippage
Solution Approach 1:
The installing part is segmented into multiple functional zones: a watertight projection for sealing, a reinforce member for structural support, and a hook part for mechanical engagement. This segmentation allows each component to perform its specific function independently, ensuring reliable sealing and preventing slippage without requiring uniform deformation across the entire installing part.
Solution Approach 2:
The installing part combines multiple materials with different properties: an elastic material for the watertight projection to enable deformation and sealing, a rigid reinforce member to prevent excessive inward deformation, and a hook part for mechanical engagement. This composite structure balances flexibility and rigidity to achieve both watertight seal and slippage resistance.
2Reliability
If the installing part deforms elastically to contact the insertion hole surface, then watertight seal is achieved, but the installing part may deform too much and lose structural stability
Solution Approach 1:
The reinforce member is pre-installed within the installing part to provide structural support before the deformation occurs. This preliminary reinforcement prevents excessive inward deformation while allowing controlled elastic deformation of the watertight projection to maintain the seal.
Solution Approach 2:
Different regions of the installing part have different mechanical properties: the watertight projection region is designed to be elastic for sealing, while the reinforce member region is designed to be rigid for structural support. This local differentiation of material properties allows simultaneous achievement of deformation capability and structural stability.
3Adaptability or versatility
If the installing part is made entirely elastic to enable deformation, then sealing is possible, but the part becomes too soft and prone to accidental removal
Solution Approach 1:
The installing part is divided into segments with different mechanical properties: an elastic watertight projection for sealing adaptation and a rigid hook part for strength and anti-removal functionality. This segmentation allows the soft elastic portion to deform for sealing while the hard rigid portion provides strength to prevent accidental removal.
Solution Approach 2:
The installing part uses composite construction combining elastic material for the watertight projection and rigid material for the reinforce member and hook part. This composite material approach enables the installing part to exhibit both elastic deformation capability for sealing and high strength for resistance to accidental removal.
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 enhances the watertight seal and prevents accidental removal of the cap by ensuring consistent contact and engagement, maintaining the seal even under external shocks and facilitating easy opening and closing of connectors.
Implementation Method 1
the insertion part having elastic force... when the insertion part is inserted in the through hole, a watertight projection provided on a whole external peripheral surface of the insertion part, which watertight projection is pressed against a surface defining the through hole in the case
Implementation Method 2
a reinforce member embedded in the cap body and the insertion part so as to prevent the insertion part from deforming inwards
Implementation Method 3
a hook part provided on the insertion part, which hook part protrudes inside the case to engage with an edge of the surface defining the through hole
Data Source
AI summary
A watertight cap used with an electronic apparatus is provided with a cap body to be set in an installing recess of the apparatus case of the electronic apparatus, an insertion part provided on the cap body and inserted into a through hole formed in the installing recess, a watertight projection provided on the peripheral surface of the insertion part to be resiliently pressed against the surface defining the through hole, a reinforce member embedded in the cap body and the insertion part for preventing the insertion part from deforming inwards, and a hook part provided on the insertion part so as to project into the apparatus case to engage with the stopping part in the through hole, when the insertion part is inserted in the through hole, thereby securing enhanced watertight of the apparatus case and preventing the cap body from slipping out from the apparatus case accidentally.