Engagement Lever System for Electronic Component Units
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Solution Overview
Problem
Electronic component units in electronic apparatuses generate electromagnetic noise due to vibrations or external forces, which can alter the contact state between connection and receiving connectors, leading to noise interference.
Innovation Solution
An engagement lever system with a vertical lever main body and a restricting member is used to securely engage the electronic component unit with the housing, allowing it to maintain a stable state during insertion and operation, preventing vibrations and external forces from affecting the connector contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic component unit is detachably mounted in the slot, then the ease of operation is improved, but the stability of the connection state deteriorates
Solution Approach 1:
The engagement lever is pre-configured in a restricted position that maintains the lever main body in a vertical aligned state, ensuring the engagement groove is properly positioned to engage with the engaged member before any external force is applied. This preliminary positioning prevents misalignment and maintains stable connector contact during operation.
2Ease of operation
If the engagement lever is made swingable, then the ease of operation is improved, but the generation of electromagnetic noise worsens
Solution Approach 1:
The restricting member is designed to counteract any external forces or vibrations that might cause the lever main body to deviate from its vertical position. By applying a preliminary restraining force, the system prevents the lever from swinging unintentionally, thereby avoiding connector contact changes and electromagnetic noise generation during normal operation.
3Ease of operation
If the lever main body is displaceable between two states, then the ease of operation is improved, but the reliability deteriorates
Solution Approach 1:
The system ensures the lever main body is preliminarily positioned in the vertically aligned second state where the engagement groove properly engages with the engaged member. This preliminary positioning guarantees reliable connector connection, while still allowing controlled transitions to the first state for engagement/disengagement operations when needed.
Data Source
AI summary
An electronic apparatus including a housing, an electronic component unit main body, an engagement lever, and an engaged member, in which the engagement lever includes a lever main body, an engagement groove, and a restricting member, the lever main body is displaceable between a first state in which the one end portion is inclined to protrude rearward with respect to the other end portion in an insertion direction of the electronic component unit main body with respect to the accommodating part and the engagement groove abuts against the engaged member from the rear in the insertion direction, and a second state in which the lever main body is vertical from the one end portion to the other end portion and the engagement groove engages with the engaged member, and the restricting member is able to restrict the lever main body to being in the second state.