Terminal Connection Structure With Displaceable Tolerance Absorption
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Solution Overview
Problem
Conventional terminal connection units require a braided wire or laminated busbar for an expandable portion to absorb positional tolerance, necessitating a more complex structure with multiple components.
Innovation Solution
A terminal connection unit with a coupling member that is displaceable due to external forces, allowing the partner terminal and connection portion to be coupled without an expandable portion, using a busbar with an elongated bolt insertion hole and a holder that displaces to absorb positional tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an expandable portion made of braided wire or laminated busbar is used to absorb positional tolerance, then the tolerance absorption capability is improved, but the device complexity and number of components increase
Solution Approach 1:
The coupling member is designed to be displaceable relative to the support portion main body, allowing dynamic adjustment to accommodate positional tolerances. The coupling member can move in response to external forces from terminal displacement, eliminating the need for static expandable portions while maintaining connection stability.
Solution Approach 2:
The coupling member serves multiple functions: it couples the partner terminal and connection portion, absorbs positional tolerances through displacement, and transmits external forces. This multi-functionality replaces the need for separate expandable portion components, simplifying the overall structure.
2Manufacturing precision
If an expandable portion is incorporated into the electrically conductive member to absorb tolerance, then the tolerance absorption capability is improved, but the number of components increases
Solution Approach 1:
The tolerance absorption function is merged into the coupling member's displacement capability rather than being implemented through a separate expandable portion. The coupling member integrates both the coupling function and the tolerance absorption function, reducing the total component count.
Solution Approach 2:
The coupling member's displaceable design allows it to dynamically adjust its position to absorb tolerances, replacing the need for additional expandable components. This dynamic adjustment is achieved through the coupling member's ability to move relative to the support portion main body in response to external forces.
Data Source
AI summary
A terminal connection unit is disclosed that has a small number of components and a simple structure and is capable of absorbing tolerances. A terminal connection unit includes an electrically conductive member having a connection portion to which a partner terminal is connected, and a support portion that supports the electrically conductive member in a fixed manner. The support portion has a coupling member that couples the partner terminal and the connection portion in the electrically conductive member to each other. When an external force accompanying the displacement of the partner terminal is exerted on the coupling member, the coupling member can be displaced with respect to the support portion main body in the support portion.