Terminal Securing Layout With Overlapping Key Lock to Cut Holder Length
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Solution Overview
Problem
Conventional terminal securing devices face challenges in miniaturization due to the need for longer holder dimensions to accommodate key locks, which either hinder pin insertion or require excessive space for sliding displacement, leading to increased device size.
Innovation Solution
A terminal securing device design where the key lock is positioned to overlap with the key in the length direction, allowing for restricted sliding displacement in both locked and temporarily locked states, reducing the holder's length and eliminating the need for additional engagement parts, thereby miniaturizing the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the key lock is provided at the opposite side to the pin in the length direction of the rod, then the locked state can be maintained, but the dimension of the holder in the length direction needs to be set long to ensure space for sliding displacement
Solution Approach 1:
The key lock is repositioned from the opposite side to the pin side along the length direction, and its sliding path is arranged to overlap with the key's position in the length direction. This spatial reconfiguration allows the key lock to maintain its locking function while reducing the holder's length dimension by utilizing the overlapping space rather than requiring additional linear space.
2Length of stationary object
If the key lock is provided at the side where the pin is secured, then the space for sliding displacement is reduced, but the key lock may hinder the operation of inserting the pin through the holder
Solution Approach 1:
The key lock is positioned at the pin side but configured to slide in a path that overlaps with the key's position in the length direction, rather than occupying the same lateral space as the pin insertion path. This localized spatial arrangement allows the key lock to be present without interfering with pin insertion operations, as the key lock's movement occurs in a different spatial plane or overlapping region that does not block the pin's insertion trajectory.
3Reliability
If separate restricting portions are provided for temporarily locked state and locked state, then each state can be restricted independently, but the number of restricting portions and device complexity increases
Solution Approach 1:
A single restricting portion is designed to serve dual functions: it restricts the key lock's sliding displacement in both the temporarily locked state and the locked state. The restricting portion is positioned and configured such that it engages with the key lock regardless of which state the system is in, thereby providing state restriction functionality without requiring separate restricting mechanisms for each state, thus reducing device complexity while maintaining reliability.
Data Source
AI summary
[Problem] To provide a terminal securing device the size of which can be reduced. [Solution] When a key lock 7 is positioned in a second position a key 6 and the key lock 7 are arranged at overlapping positions in the lengthwise direction of a rod 3, so a portion of a space for displacing the key lock 7 from the second position to a first position can be provided at a position overlapping the key 6 in the lengthwise direction of the rod 3. Thus, an increase in the size of a holder 4 in the lengthwise direction of the rod 3 can be avoided, so the size of the terminal securing device 1 can be reduced.