Angled Connector Vent Hole via Integrated Through-Hole Molding
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Solution Overview
Problem
Conventional connectors integrated with motors, especially angled connectors, face challenges in forming vent holes, leading to increased production costs, complex molding processes, and prolonged air tightness inspection times due to the need for additional parts like metallic vent pipes and limited air passage.
Innovation Solution
A vehicular angled connector-integrated servo motor with an insulating annular body and a through-hole formed between the motor section and the angled connector, achieved through a two-step molding process that eliminates the need for additional parts and enhances air tightness inspection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metallic vent pipe is used to form a vent hole in an angled connector, then the vent hole can be formed, but the production cost increases and the molding process becomes complex
Solution Approach 1:
The patent merges the vent pipe function directly into the connector housing by forming an integrated structure during molding. The vent hole is created as part of the connector's internal geometry, eliminating the need for separate metallic vent pipes and reducing assembly steps while maintaining the venting function.
Solution Approach 2:
The patent extracts the vent pipe as a separate component and eliminates it by integrating the vent hole directly into the connector housing structure. This removes the complexity of installing and positioning separate metallic vent pipes while achieving the same venting purpose through the molded housing itself.
2Reliability
If a metallic vent pipe is used to form a vent hole in an angled connector, then the vent hole can be formed, but the production cost increases
Solution Approach 1:
The vent hole is combined with the connector housing as an integrated feature, allowing both components to be manufactured in a single molding process. This eliminates the need for separate metallic vent pipes and reduces production costs by consolidating manufacturing steps and materials.
3Productivity
If no vent hole is formed in the angled connector, then the molding process is simpler, but the air tightness inspection time is prolonged
Solution Approach 1:
The vent hole is integrated into the connector housing structure, creating a direct communication path that enables efficient air tightness inspection. This integrated design allows air to flow freely through the connector during inspection without requiring complex external venting arrangements, thus improving inspection efficiency while maintaining molding simplicity.
4Productivity
If a through-hole is formed in the primary molded body, then direct communication between motor section and angled connector is achieved, but additional molding steps are required
Solution Approach 1:
The vent hole (through-hole) is formed as an integral feature of the connector housing during the primary molding process, rather than as a subsequent operation. This preliminary formation of the communication path enables direct air flow for inspection purposes while incorporating the feature into the base molding step, minimizing additional process steps.
Data Source
AI summary
A primary molded body having an angled connector that is integrally connected to an insulating annular body provided in a stator of a motor section, and that has a plurality of terminals extending along an axial direction of the motor section; a through-hole that is formed in the primary molded body and runs through the angled connector from an interior of the insulating annular body; a secondary molded body that is molded so as to cover the primary molded body; a secondary molded connector that is formed in the secondary molded body and covers the angled connector; and a connector opening that is formed in the secondary molded connector and communicates with the through-hole, wherein an outlet of the through-hole communicates with the connector opening.