Pivot-Arm Locking Structure for Rattle-Free Wire Fixation
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Solution Overview
Problem
Existing locking devices fail to securely fix articles, such as carts, to floors or walls, leading to rattling issues during fixation.
Innovation Solution
A locking device with a pivot arm, locking protrusion, shaft, and contact part, where the locking protrusion and contact part securely hold the locking wire, and a tapered portion restricts pivot arm movement to prevent rattling, using a combination of an insertion portion, pivot arm, and contact part to stabilize the locking wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple locking structure is used, then the device complexity is reduced, but the reliability of fixation is insufficient leading to rattling
Solution Approach 1:
The locking device is divided into multiple functional components: an insertion portion for initial engagement, a pivot arm for lateral restriction, a locking protrusion for longitudinal restriction, and a contact part for wire contact. Each segment performs a specific function, collectively achieving reliable fixation without requiring an overly complex integrated structure.
Solution Approach 2:
The locking protrusion is integrated into the pivot arm structure, forming a nested configuration where the protrusion is part of the pivot arm assembly. This nesting reduces the number of separate components while maintaining the dual-functionality of lateral pivoting and longitudinal locking.
2Stability of the object's composition
If the locking wire is held firmly to prevent rattling, then the stability is improved, but the ease of operation for insertion and removal is reduced
Solution Approach 1:
The pivot arm is designed to be dynamically movable, allowing it to pivot laterally during insertion and removal operations. This dynamic capability enables easy operation during installation and dismantling, while the locking protrusion provides static stability during the locked state to prevent rattling.
Solution Approach 2:
The insertion portion performs the preliminary action of engaging the locking wire first, creating initial stability. Subsequently, the pivot arm and locking protrusion engage to provide enhanced stabilization. This staged engagement facilitates easier insertion by breaking down the locking sequence into manageable steps.
3Reliability
If multiple components are used to securely hold the locking wire, then the rattling inhibition is improved, but the manufacturing complexity increases
Solution Approach 1:
The locking protrusion and pivot arm are merged into a single integrated component, reducing the total number of parts that need to be manufactured and assembled. This merging maintains the multi-component functionality for secure wire holding while simplifying the manufacturing process by reducing part count.
Solution Approach 2:
The pivot arm serves multiple functions: it provides lateral restriction through pivoting motion, houses the locking protrusion for longitudinal restriction, and includes the contact part for wire engagement. This multi-functionality reduces the need for separate dedicated components, thereby simplifying manufacturing while maintaining reliable rattling inhibition.
Data Source
AI summary
A locking device includes a contact part that is located on a side opposite to a locking protrusion across a locking wire and that comes into contact with the locking wire in an insertion direction in a state where an insertion portion is inserted through a space, the locking protrusion being contactable with the locking wire in a direction opposite to the insertion direction by being displaced with respect to a pivot arm.