Case-Mounted Connector With C-Ring Locking and Leak Sealing
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Solution Overview
Problem
Conventional connectors require bolt fastening holes in transmission cases, which may not be feasible due to layout constraints.
Innovation Solution
A connector design featuring a housing with a flange and C-ring that sandwiches the case's peripheral edge, along with a potting material to prevent leakage and a fastening member extending perpendicular to the penetration direction, allowing bolt-free mounting and reduced height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional connector with mounting flange is used, then the connector can be securely fastened to the transmission case, but a hole for bolt fastening must be provided in the case which may not be available due to layout constraints
Solution Approach 1:
The invention extracts the fastening function from the case structure (removing the need for holes in the case) and relocates it to the connector itself through the C-ring and flange assembly. The C-ring mounting groove and C-ring with positioning protrusions enable the connector to self-fasten to the case peripheral edge without requiring pre-drilled holes, thus resolving the contradiction between mounting security and layout flexibility.
2Ease of operation
If the inner harness extends in the penetration direction of the housing, then the connection is straightforward, but the connector height increases reducing operational space
Solution Approach 1:
The invention changes the extension direction of the inner harness from the penetration direction (lengthwise) to a direction intersecting with it (laterally). This dimensional change allows the harness to exit the connector sideways rather than extending the connector's length, thereby reducing connector height and increasing operational space while maintaining connection functionality.
3Volume of moving object
If the fastening member axis is perpendicular to the penetration direction, then operational space is maximized, but the fastening operation becomes more complex
Solution Approach 1:
The invention implements self-service through the C-ring positioning mechanism. The C-ring with its positioning protrusions automatically aligns with the C-ring mounting groove during installation, eliminating the need for complex alignment procedures. This self-positioning feature simplifies the fastening operation despite the perpendicular orientation of the fastening member axis, allowing operators to simply insert and secure the connector without complex positioning steps.
Data Source
AI summary
A connector is provided which can be mounted on a case without bolt fastening. A connector (C) to be mounted on a case (100) is provided with a housing (10) to be passed through a mounting hole (101) formed in the case (100), a terminal fitting (40) held in the housing (10), an inner harness (60) to be connected to the terminal fitting (45) inside the case (100), and a C-ring (70) mounted on an outer peripheral surface of the housing (10). The outer peripheral surface of the housing (10) includes a flange (13) projecting toward an outer peripheral side and a C-ring mounting groove (14), into which the C-ring (70) is mounted. The flange (13) and the C-ring (70) sandwich a peripheral edge part of the mounting hole (101), out of the case (100).