Connector Detecting Member Fit Structure to Suppress Rattling
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Solution Overview
Problem
The existing connectors with detecting members experience rattling issues when the detecting member is at a detection position with respect to the housing.
Innovation Solution
The connector design includes a housing with a cavity and a rear end tube portion, and a detecting member with a fitting portion that fits to the outer peripheral surface of the rear end tube portion at the detection position, thereby suppressing rattling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the detecting member is mounted movably in the housing without additional fitting structures, then the detecting member can move freely between initial position and detection position, but the detecting member rattles with respect to the housing at the detection position
Solution Approach 1:
The detecting member is divided into functional segments: a movable detection portion that moves between initial and detection positions, and a fitting portion that interfaces with the rear end tube portion. This segmentation allows the detection function to remain movable while the fitting portion provides stability through engagement with the housing structure.
Solution Approach 2:
The fitting portion acts as an intermediary element between the detecting member and the housing. It engages with the outer peripheral surface of the rear end tube portion to suppress rattling, while not interfering with the forward movement of the detection portion. This intermediary structure resolves the contradiction by providing stability without constraining the necessary movability.
2Stability of the object's composition
If the detecting member is fixed firmly to the housing, then rattling is suppressed, but the detecting member cannot move from initial position to detection position
Solution Approach 1:
Different parts of the detecting member have different qualities: the fitting portion is designed for stable engagement with the housing to suppress rattling, while the detection portion maintains movability for position detection. This local differentiation of qualities allows the detecting member to simultaneously achieve stability where needed and movability where required.
Solution Approach 2:
The detecting member employs a dynamic design where the fitting portion provides static engagement with the housing to prevent rattling, while the detection portion remains dynamic and movable between positions. This dynamic configuration allows the system to adapt between stable engagement and controlled movement as needed for proper operation.
Data Source
AI summary
A connector 10, 10A includes a housing 20, 20A and a detecting member 60, 60A movable from an initial position to a detection position forward of the initial position when a mating connector 100 and the housing 20, 20A are properly connected. The housing 20, 20A includes a cavity 24 extending in a front-rear direction for accommodating a terminal fitting 40 and a rear end tube portion 26, 26A surrounding a rear part of the cavity, a wire W connected to the terminal fitting 40 being pulled out from the rear end tube portion 26, 26A. The detecting member 60, 60A includes a fitting portion 62, 62A to be fit to an outer peripheral surface of the rear end tube portion 26, 26A at the detection position.