Lockable Snap-Clip Fastener With Integrated Spring Locking Bar
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Solution Overview
Problem
Existing snap-clip fasteners are complex and require multiple parts, making them difficult to use and manufacture, and lack a simple mechanism to maintain a locked or unlocked configuration without user intervention.
Innovation Solution
A lockable snap-clip fastener with two jaw members joined at a pivot and biased by a spring, featuring a locking bar that passes through one jaw and is held in position by the spring, allowing it to block or allow passage depending on its position, enabling easy switching between locked and unlocked states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lockable mechanism is added to snap-clip fasteners, then the fastener can maintain locked or unlocked configuration, but the device complexity increases
Solution Approach 1:
The locking bar is integrated as part of the first jaw member, and the spring is positioned to interact with both the locking bar and the second jaw member. This merging of components allows the locking mechanism to maintain configuration stability while reducing the total number of separate parts compared to traditional snap-clip fasteners with additive locking mechanisms.
2Reliability
If traditional snap-clip fasteners are designed with multiple parts, then locking functionality is achieved, but the ease of operation decreases
Solution Approach 1:
The locking functionality is extracted as a distinct feature implemented through the positioning of the locking bar relative to the second jaw member. The spring provides automatic engagement and maintenance of the locked state without requiring additional user actions. The user simply needs to manually move the locking bar to switch between locked and unlocked states, making operation intuitive and simple.
3Reliability
If snap-clip fasteners use many components, then locking mechanism is achieved, but manufacturing cost increases
Solution Approach 1:
The locking bar is formed as an integral part of the first jaw member, eliminating the need for a separate locking component. The spring is positioned to interact with existing features of the jaw members. This merging of functions into fewer components reduces manufacturing steps, assembly operations, and material costs while maintaining reliable locking capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a simple, intuitive, and economical lockable snap-clip fastener that remains in a chosen configuration until manually changed, using fewer components and ensuring secure temporary fastening of objects.
Implementation Method 1
two jaw members joint at a pivot and biased by a spring in a closed position
Data Source
AI summary
A lockable snap-clip fastener (10) has two spring-biased jaw members (12, 14) and a slidable locking bar (16). The same spring (13) that biases the jaws (12, 14) holds the locking bar (16) in either an open or a closed position with one of its arms. Since the bar (16) is held in either the locked or unlocked position, it is more secure and must be positively actuated in order to transition from one configuration to the other.