Terminal Pair Locking Mechanism for Vehicle Body Positioning
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Solution Overview
Problem
Conventional terminal pairs for connecting a shielded wire braid to a vehicle body face challenges in maintaining a regular position relationship between terminals and are difficult to position correctly due to their flat plate shape, leading to reduced workability during attachment.
Innovation Solution
The terminal pair incorporates locking and lock-receiving portions arranged circumferentially around a through hole, with claw-shaped and flake-shaped features, along with crimping pieces to securely fix the terminals relative to each other and prevent rotation, ensuring accurate positioning and attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the attaching portion is formed in a flat plate shape, then the terminal pair is simple in structure, but the terminal pair cannot maintain a regular position relationship and rotates during attachment
Solution Approach 1:
The attaching portion is divided into multiple segments: a flat plate base portion and multiple arc-shaped positioning portions extending from the edge. This segmentation allows the simple flat plate structure to be enhanced with positioning features that prevent rotation while maintaining overall structural simplicity.
Solution Approach 2:
Arc-shaped positioning portions are added to the flat plate attaching portion, introducing a new dimensional element (curved extensions) that engages with corresponding features on the vehicle body to prevent rotation around the bolt axis, thereby stabilizing the position relationship.
2Ease of manufacture
If the terminals are separated from each other, then each terminal can be independently formed, but it is difficult to position the terminals relative to each other and to the vehicle body
Solution Approach 1:
The attaching portions of the two separated terminals are merged into a single integrated component that includes both attaching portions and positioning portions. This merging enables the independently formed terminals to be positioned relative to each other and to the vehicle body as a unified assembly, improving positioning workability while maintaining manufacturing independence.
Data Source
Figure 1~2
Figure 3
Figure 4A~5B
AI summary
[Problem] To provide a terminal pair allowed to be easily attached to an attached member, and allowed to maintain a position relationship of terminals relative to each other in a regular position relationship. [Means for solving problem] A terminal pair 1 includes: a pair of terminals 2a, 2b; a plurality of locking portions 7; and a plurality of lock-receiving portions 8a, 8b. Each of the terminals includes: a shield fixing portion 3 to which the shielded wire 20 is attached; and an attaching portion 5 continued to the shield fixing portion 3 and attached to a vehicle body panel 4 by overlapping with the vehicle body panel 4 and fastening to the vehicle body panel 4 with a bolt 9. The locking projections 7 are provided on the attaching portion 5 of one terminal 2a of the pair of terminals 2a, 2b. The lock-receiving projections 8a, 8b are provided on the attaching portion 5 of the other terminal 2b, and locked by the locking portions 7.