Invisible Zipper Lock Slider to Reduce Pull Tab Shaking
Solution Overview
Problem
Existing invisible zippers experience pull tab shaking during rotation due to the lack of effective stabilization mechanisms, affecting performance.
Innovation Solution
A lock slider design featuring a pull tab with a hinge portion and protrusion, integrated with a slider body's hinge and limiting grooves, limits axial movement and uses an elastic sheet cover plate to stabilize the pull tab, reducing shaking by applying a pressing force to the hook.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pull tab is designed with only a groove for engagement with the hook, then the structure is simple, but the pull tab shakes left and right during rotation
Solution Approach 1:
The pull tab is segmented into multiple functional components: a hinge portion for rotation, a protrusion for limiting axial movement and pushing the hook, and a groove for engagement. This segmentation allows each component to perform its specific function independently, reducing overall shaking while maintaining structural simplicity
Solution Approach 2:
The protrusion acts as an intermediary element between the pull tab and the hook. It pushes the hook when the pull tab rotates by a preset angle, enabling controlled unlocking without direct contact between the pull tab and hook, thereby reducing shaking and improving stability
2Ease of operation
If the pull tab is allowed to rotate freely, then the operation is smooth, but the pull tab shakes and affects performance
Solution Approach 1:
The pull tab design incorporates dynamic elements that adapt during rotation: the hinge portion enables free rotation for smooth operation, while the protrusion dynamically pushes the hook at the appropriate moment (preset angle) to unlock. This dynamic behavior ensures both smooth operation and reliable performance without shaking
Solution Approach 2:
The design changes the rotational parameter of the pull tab by introducing a preset angle threshold. Before this angle is reached, the pull tab rotates freely for smooth operation. Once the preset angle is achieved, the protrusion pushes the hook, changing the system state from locked to unlocked, ensuring reliable performance
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 design significantly reduces pull tab shaking, enhances stability, and improves the overall performance of the invisible zipper by ensuring smooth operation and reduced noise.
Implementation Method 1
The curved section is configured to be elastically deformed to apply a force to the flat section
Data Source
Figure 1~2
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AI summary
A lock slider of an invisible zipper, the lock slider comprising a pull tab, a slider body and a lock. A hinge portion and a protrusion are provided on a first cross rod of the pull tab, and a hinge slot in rotational fit with the hinge portion and a limiting slot in limiting fit with the protrusion are provided on a lug of the slider body. The pull tab is mounted on the slider body, the hinge portion is located in the hinge slot, and the protrusion is located in the limiting slot. When the pull tab rotates, the hinge portion rotates in the hinge slot, and the protrusion moves in the limiting slot; and when the pull tab rotates at a preset angle to a lower surface of the slider body, the protrusion can push the lock and continue to rotate the pull tab, and the protrusion pushes the lock to be separated from scoops so as to unlock the slider body. During the rotation of the pull tab, the protrusion is always partially located in the limiting slot, the limiting slot can limit the protrusion all the time, and the pull tab is limited to move in the direction of an axis of the first cross rod, which in turn reduces shaking of the pull tab during turnover when in use, thereby improving the use effect of the invisible zipper.