Connector Shift Suppression in Electronic Control Device Housing
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Solution Overview
Problem
Existing electronic control devices face challenges in maintaining sealing performance due to connector movement or shifting within the housing, especially under load and external forces, which compromises their load-carrying capacity.
Innovation Solution
An electronic control device design featuring a shift suppression unit with fitting portions at the higher-rigidity connector sandwiching member and connector, which suppresses connector movement relative to the housing, combined with a sealant-filled seal portion between the connector and housing components to enhance sealing and load-carrying capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connector is forced and connected to an external connector, then the connection is established, but a great pressing force is applied to the connector causing it to shift relative to the housing
Solution Approach 1:
The guide portions are pre-formed on the connector and housing before assembly. These guide portions protrude and fit into corresponding recesses, establishing the correct positional relationship before the connector is fully inserted and connected, thereby preventing shift during the connection process
Solution Approach 2:
The guide portions act as intermediary elements between the connector and housing. The protruding guide portions on one component fit into recesses on the other component, serving as a mediating mechanism that ensures proper alignment and prevents relative shifting during connection
2Force
If the connector is subjected to load from harness weight and sway, then the connector must support these forces, but the connector may shift relative to the housing
Solution Approach 1:
The guide portions are pre-formed on the connector and housing before assembly. These guide portions protrude and fit into corresponding recesses, establishing the correct positional relationship before the connector is fully inserted and connected, thereby preventing shift during the connection process
Solution Approach 2:
The housing is formed by combining a case and cover that sandwich the connector, creating a composite structure that provides both mechanical support for load-bearing and positional stability through the integrated guide portions
Data Source
AI summary
An electronic control device has a circuit board to which, at one side thereof, a connector is fixed; a housing having a pair of connector sandwiching members that sandwich the connector, a part of the connector being exposed to an outside of the housing and a remaining part of the connector and the circuit board being housed in a watertight space of the housing, and one of the connector sandwiching members being set to be higher in rigidity than the other; a seal portion filled with a sealant; and a shift suppression unit having a protruding portion formed at one side of the higher-rigidity connector sandwiching member and the connector and a hollow portion formed at the other side The shift suppression unit suppresses a shift of the connector with respect to the housing by fitting of the protruding portion and the hollow portion together.