Connector Pushback Regulating Portion Impact Reduction
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Solution Overview
Problem
In multipolar connectors, the high biasing force of spring members to detect half-fitting can cause excessive impact on the pushback regulating portion when the claw portion abuts against the stepped portion, leading to potential troubles.
Innovation Solution
The introduction of sliding frictional forces between specific sliding surfaces, utilizing arm portions and protruding portions to increase sliding friction before the claw portions abut against the stepped portions, reducing the speed of the inner housing's pushback and thus minimizing the impact on the pushback regulating portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the biasing force of the spring member is increased to detect half fitting, then the reliability of half fitting detection is improved, but the impact on the pushback regulating portion increases causing potential troubles
Solution Approach 1:
A sliding load portion is introduced as an intermediary element between the spring member and the pushback regulating portion. This sliding load portion includes a sliding surface that contacts a mating sliding surface, creating sliding friction that mediates the force transmission. The sliding friction reduces the impact force transmitted to the pushback regulating portion while still allowing the spring member's biasing force to effectively push back the inner housing for half-fitting detection.
Solution Approach 2:
The sliding load portion acts as a cushioning mechanism before the force reaches the pushback regulating portion. The sliding friction between the sliding surface and mating sliding surface absorbs and dissipates part of the impact energy, providing beforehand cushioning that protects the pushback regulating portion from excessive impact while maintaining the functionality of the spring member.
2Speed
If the biasing force of the spring member is increased to push back the inner housing, then the speed of pushback is improved, but the impact on the pushback regulating portion increases
Solution Approach 1:
The sliding load portion serves as an intermediary that transmits the biasing force from the spring member to the inner housing while controlling the rate of force transmission. The sliding friction provides resistance that regulates the pushback speed, preventing excessive speed that would generate harmful impact, while still maintaining sufficient speed for effective pushback operation.
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
This approach effectively reduces the impact on the pushback regulating portion, even with increased biasing force, preventing damage and ensuring reliable operation.
Implementation Method 1
sliding frictional force of the sliding load portion... sliding friction between the sliding surfaces can be increased by the arm portion
Data Source
Figure 1
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Figure 3
AI summary
The connector (1) includes an inner housing (16), an outer housing (17), a locking mechanism (18) for locking, a spring member that pushes back the inner housing during half fitting, and a pushback regulating position (20a) that regulates a pushback position. The pushback regulating portion includes a claw portion (33), a stepped portion (54) against which the claw portion abuts, and a sliding load portion (60a) that makes a sliding friction force between the inner housing and the outer housing at a predetermined timing before abutting to be larger than the sliding friction force before the predetermined timing.