Slider Cover Protrusions for Fastener Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional slider covers for slide fasteners often generate noise due to rattling when operated, as they do not perfectly conform to the slider's shape, leading to gaps between the inner peripheral surface of the cover and the outer peripheral surface of the slider.
Innovation Solution
A slider cover design featuring upper and lower mounting plates with protrusions that come into close contact with the slider's blades, stabilizing the cover's position and reducing rattling by matching the shape of the slider's blades with gaps, thereby minimizing noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a gap is formed between the inner peripheral surface of the slider cover and the outer peripheral surface of the slider, then it is easy to manufacture the slider cover, but the slider cover rattles and generates noise when the slider is operated
Solution Approach 1:
The invention applies local quality by forming protrusions only at specific locations on the inner peripheral surface of the slider cover, rather than making the entire surface conform to the slider. These localized protrusions make close contact with corresponding portions of the slider to prevent rattling, while the rest of the cover maintains ease of manufacture with standard gap clearance.
2Object-generated harmful factors
If the inner peripheral surface of the slider cover is perfectly conformed to the outer peripheral surface of the slider, then rattling and noise are prevented, but the manufacturing precision requirement becomes excessively high
Solution Approach 1:
Instead of requiring perfect conformity across the entire inner peripheral surface, the invention uses localized protrusions at specific contact points. This approach maintains high noise reduction effectiveness while significantly lowering the overall manufacturing precision requirement, as only these localized protrusion areas need precise fitment rather than the complete surface.
Solution Approach 2:
The invention segments the contact interface into discrete protrusion points rather than requiring continuous surface conformity. This segmentation allows the slider cover to be manufactured with standard precision, while the protrusions provide the necessary contact points to prevent rattling and noise during operation.
3Object-generated harmful factors
If protrusions are added to the inner peripheral surface of the slider cover, then close contact with the slider is achieved and rattling is reduced, but the device complexity increases
Solution Approach 1:
The protrusions are added only as necessary localized features on the inner peripheral surface rather than redesigning the entire slider cover structure. This minimal addition achieves the noise reduction function while keeping the overall device complexity low, as the protrusions are simple geometric additions to the existing cover form.
Data Source
AI summary
There is provided a slider cover of a slide fastener. An upper mounting plate includes: an upper plate to be arranged above an upper blade of a slider and formed with a through-hole penetrating therethrough; and an upper wall protruding downward from the upper plate. A lower mounting plate includes: a lower plate to be arranged below a lower blade of the slider; and a lower wall for surrounding front, right and left sides of an outer periphery of the lower blade and protruding upward from the lower plate. At least one of the upper and lower mounting plates includes a protrusion protruding from an inner peripheral surface of at least corresponding one of the upper and lower walls and configured to come in close contact with a part of an outer peripheral surface of at least corresponding one of the upper and lower blades.