Waterproof Component Wiring Structure Push-In Attachment
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Solution Overview
Problem
Existing waterproof components for electric wires routed over wet and waterproof areas require complex attachment processes, such as screwing and sealing member fitting, which are time-consuming and inefficient.
Innovation Solution
A waterproof component comprising a housing body with an attachment hole insertion portion, a mat seal, a mat seal cover, and an elastic ring, allowing easy attachment by pushing into wall holes, with the mat seal accommodating chamber and elastic ring providing a secure seal around the electric wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional waterproof components are attached using screwing and sealing member fitting, then reliable waterproofing is achieved, but the attachment process becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple functions into a single integrated waterproof component. The housing body integrates the sealing function (replacing separate sealing members), the attachment function (replacing screws), and the wire protection function into one unit. This merging eliminates the need for separate sealing members and fasteners, achieving reliable waterproofing while simplifying the attachment process to a single pushing operation.
Solution Approach 2:
The patent extracts and eliminates unnecessary components from the traditional waterproof attachment system. By removing separate sealing members and fastening elements (screws), the design achieves waterproofing and secure attachment through the housing body's integrated structure and elastic ring mechanism alone, significantly reducing attachment complexity.
2Reliability
If traditional waterproof components require multiple attachment steps, then secure fixation is achieved, but labor and time consumption increase
Solution Approach 1:
The waterproof component performs self-fixation through its elastic ring structure. When pushed into the attachment hole, the elastic ring automatically expands to contact the inner peripheral surface and generates sufficient friction force to secure the component without requiring external fastening operations. This self-service mechanism achieves secure fixation while dramatically improving attachment efficiency.
Solution Approach 2:
The elastic ring provides dynamic adaptation to the attachment hole dimensions. Its elasticity allows it to deform during insertion and then expand to match the hole's inner peripheral surface, creating a secure fit that adapts to variations in hole size and shape. This dynamic behavior ensures reliable fixation with a simple pushing action.
3Productivity
If the waterproof component uses a simple pushing attachment method, then attachment efficiency is improved, but secure locking and seal integrity may be compromised
Solution Approach 1:
The locking claw is pre-configured in an elastically deformable state that allows it to engage with the second peripheral surface of the attachment hole during the pushing attachment process. As the component is inserted, the locking claw automatically deforms and locks onto the hole's surface, ensuring secure fixation is achieved as part of the simple pushing action rather than requiring a separate locking step.
Solution Approach 2:
The elastic ring's circular cross-section and the locking claw's curved engagement surface allow for smooth, uniform contact with the attachment hole's inner peripheral surface. This curved geometry distributes the attachment forces evenly and creates reliable mechanical interlocking, ensuring that the simple pushing method achieves both efficiency and secure locking.
4Reliability
If the elastic ring contacts the inner peripheral surface of the attachment hole, then waterproof seal is achieved, but the attachment hole dimensions must be precisely controlled
Solution Approach 1:
The elastic ring's material properties (elastic modulus, hardness) are optimized to provide sufficient sealing force while accommodating normal variations in attachment hole dimensions. By carefully selecting and controlling the elastic ring's physical parameters, the design achieves reliable waterproof sealing without requiring extremely precise control of the attachment hole's dimensional tolerances.
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
Enables efficient attachment of the waterproof component with reduced labor and time, ensuring effective waterproofing through simple pressing action and maintaining seal integrity even when wires are pulled.
Implementation Method 1
an elastic ring disposed on an outer periphery of the attachment hole insertion portion and configured to be in close contact with an inner peripheral surface of the attachment hole when the waterproof component is attached to the attachment hole
Implementation Method 2
a locking claw provided in an elastically deformable manner on an insertion tip side of the attachment hole insertion portion, the locking claw being configured to be locked to a second peripheral surface of the attachment hole opposite to the first peripheral surface
Data Source
AI summary
A waterproof component includes a housing body, a mat seal, mat seal cover, and an elastic ring. The housing body includes an attachment-hole-insertion portion having a mat-seal-accommodating chamber, an abutting portion 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 be 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 elastic ring is disposed on an outer periphery of the attachment-hole-insertion portion.