Loop Forming Fastener With Ratchet Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional loop forming fasteners, such as zip ties, lack the ability to lock the loop at a selected size, leading to issues like over-tightening and unsuitable applications where specific loop sizes are required.
Innovation Solution
A loop forming fastener with a ratchet mechanism and a pawl system that allows the loop to be secured at a user-defined size, featuring a stopper or locking mechanism to prevent further tightening, enabling the creation of size-secured loops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional zip ties are used to secure objects, then the loop can be tightened continuously, but the loop cannot be locked at a selected size leading to over-tightening
Solution Approach 1:
The continuous tightening path is segmented into discrete positions using an array of cavities at different locations along the elongate body. The locking mechanism can engage with specific cavities to lock the loop at predetermined sizes, preventing continuous over-tightening while maintaining ease of operation.
Solution Approach 2:
The array of cavities is pre-positioned along the elongate body at specific locations that correspond to desired loop sizes. This preliminary arrangement of locking positions allows the user to select and lock at the appropriate size before over-tightening occurs, eliminating the need for real-time adjustment during tightening.
2Adaptability or versatility
If conventional zip ties are used, then the structure remains simple, but the adaptability to specific application requirements is limited
Solution Approach 1:
The fastener incorporates an array of cavities segmented along the elongate body, each cavity representing a discrete loop size option. This segmentation provides multiple adaptability levels while maintaining a relatively simple overall structure that integrates with the existing zip tie design.
Solution Approach 2:
The array of cavities serves multiple functions: it provides various loop size options for different applications, acts as a guide for the locking mechanism, and maintains structural integrity. This multi-functionality increases adaptability without proportionally increasing device complexity.
3Ease of operation
If a stopper is added to limit loop size, then the loop size can be restricted, but the device complexity increases
Solution Approach 1:
The stopper function is merged with the existing locking mechanism and cavity array. The locking mechanism naturally limits the loop size by engaging with the nearest cavity when the stopper reaches the head, combining the size limitation function with the existing structural elements rather than adding a completely separate component.
Solution Approach 2:
The array of cavities and locking mechanism work together to automatically limit the loop size without requiring additional active components. As the elongate body is pulled through the head, the stopper and locking mechanism self-regulate to prevent over-tightening, eliminating the need for complex external control systems.
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
Enables the formation of loops of any size, preventing over-tightening and accommodating specific application requirements by allowing the loop to be locked at a predetermined size, enhancing versatility and usability.
Implementation Method 1
a ratchet including an array of teeth aligned the first side of the elongate body portion and a pawl associated with the head and the opening. The ratchet permits movement of the elongate body portion through the opening in a first direction but prevents movement of the elongate body portion in an opposite second direction.
Implementation Method 2
a lock located in the bottom of the head that selectively prevents movement of the elongate body portion in the first direction
Implementation Method 3
a stopper located on the elongate body, the stopper being too large to pass easily through the opening of the head. Such a stopper can function to limit the distance to which the elongate body can be passed through the head and thus establish a predetermined minimum size of the loop
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
A loop forming fastener including a ratchet and locking features that can be utilized to provide for a desired loop size. The loop forming fastener may include an elongate body portion having a first end and an opposite tail portion, with a head connected to the elongate body, the head defining an opening configured to receive the elongate body to form a loop. A ratchet may allow movement of the body through the opening in a first direction, but prevents movement in a second direction. The elongate body may include a stopper to maintain at least a minimum loop size. The head may include a locking mechanism to lock the elongate body, and thereby establish a desired size of the loop.