Connector With Segmented Sealing Assembly For Backward Pulling Force
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Solution Overview
Problem
Existing connectors face challenges in achieving a robust and stable electrical connection while maintaining a watertight seal, especially when subjected to backward pulling forces, which can lead to damage to the sealing components and poor contact.
Innovation Solution
A connector design featuring a cable assembly with a separate sealing assembly that includes a main body, a flexible seal, and a sub-body connected by rigid rods, which distributes the pulling force through dual fasteners, preventing seal deformation and ensuring stable watertightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sealing assembly is integrated with the terminal portion, then the structure is simpler, but the seal is vulnerable to damage under backward pulling forces
Solution Approach 1:
The cable assembly is divided into separate functional components: the terminal portion for electrical connection and the sealing assembly for waterproofing. This segmentation allows each component to be optimized independently - the seal can be designed specifically for waterproofing without being compromised by electrical connection requirements, thereby improving seal integrity while maintaining reasonable structural complexity.
Solution Approach 2:
A separate sealing assembly acts as an intermediary component between the cable and the connector housing. This intermediary structure distributes backward pulling forces away from the seal, preventing direct stress concentration on the sealing components while still maintaining the watertight barrier function.
2Reliability
If the seal is made more robust to resist pulling forces, then the watertightness is improved, but the seal may deform under excessive force
Solution Approach 1:
The sealing assembly is designed with a fastening portion that engages with the connector housing before backward pulling forces are applied. This pre-engagement creates a mechanical anchor that cushions and distributes subsequent pulling forces, preventing the seal from experiencing excessive stress that would cause deformation while maintaining the watertight seal.
Solution Approach 2:
The sealing assembly uses a flexible seal component that can deform elastically under normal operating conditions to maintain contact and waterproofing, while the overall assembly structure provides rigidity to resist excessive forces. The flexibility allows the seal to conform to the cable and maintain watertightness without rigid deformation.
3Reliability
If the sealing assembly is pressed deeply into the cable for better sealing, then the watertightness is improved, but the cable and seal are more vulnerable to damage
Solution Approach 1:
The sealing function is segmented from the cable structure itself and placed in a separate sealing assembly. This allows the seal to be pressed into the cable outer sheath to the necessary depth for waterproofing without compromising the cable's structural integrity, as the sealing force is localized to the seal-cable interface rather than affecting the entire cable assembly.
Solution Approach 2:
The sealing assembly serves as an intermediary that achieves deep sealing into the cable while protecting both the cable and seal from damage. The fastening portion anchors the sealing assembly to the connector housing, distributing the sealing pressure through a larger area and preventing concentration of forces that would damage the cable or deform the seal.
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 provides a robust and stable electrical connection while maintaining watertightness, preventing damage to sealing components and ensuring reliable contact, even under backward pulling forces.
Implementation Method 1
a sealing assembly pressed into an outer sheath of the cable and forming a watertight seal with the cable
Implementation Method 2
The cable assembly is elastically connected to a first fastening portion of the connector housing
Data Source
AI summary
A connector includes a connector housing and a cable assembly configured to be inserted into the connector housing and fixed to the connector housing. The cable assembly has a cable, a terminal portion configured to electrically connect the cable to an external terminal, and a sealing assembly pressed into an outer sheath of the cable and forming a watertight seal with the cable. The sealing assembly is disposed separately from the terminal portion. The cable assembly is elastically connected to a first fastening portion of the connector housing.