Adjustable Buckle Anti-Slip Coating for Strap Stability

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Solution Overview

Problem

Buckles for straps, such as tri-bar sliders, rings, and g-shaped hooks, tend to slide and loosen over time on smooth materials like fabric or elastic, leading to a compromised fit in garments.

Innovation Solution

An adjustable buckle featuring a slider with a nylon coating and an anti-slip coating, typically made of rubber, which provides a tacky finish to prevent slippage on smooth surfaces, ensuring the buckle remains in place once adjusted.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional buckle is used on a smooth strap, then the buckle can be easily adjusted, but the buckle slides and loosens over time

Engineering Contradiction:
Improveease of adjustmentVSAvoidstrap fit stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The buckle incorporates a dual-layer coating system: a nylon coating providing a smooth surface for easy strap insertion and adjustment, and an outer anti-slip coating with rubber particles providing high friction to prevent slippage. This composite surface structure resolves the contradiction by combining the benefits of both smooth and rough surfaces in a single coating system.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The anti-slip coating is applied specifically to the portions of the buckle that contact the strap, while other areas maintain the smooth nylon coating. This localized application of different surface properties allows the buckle to provide both ease of adjustment and secure holding where needed.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If the buckle surface is made smooth for easy adjustment, then adjustment is facilitated, but the buckle slips on the strap

Engineering Contradiction:
Improveadjustment easeVSAvoidslippage
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The dual-layer coating combines a smooth nylon base layer that facilitates easy adjustment with an outer layer containing rubber particles that generate high friction to prevent slippage. This composite material structure directly addresses the contradiction between smooth surface benefits and slippage prevention.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The surface properties of the buckle are modified by changing the physical and chemical parameters of the coating materials. The nylon coating provides low friction for easy movement, while the rubber-containing anti-slip coating provides high friction to prevent unwanted slippage, effectively changing the friction parameter in different operational contexts.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If an anti-slip coating is added to prevent slippage, then strap security is improved, but the coating process becomes more complex

Engineering Contradiction:
Improvestrap securityVSAvoidcoating process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The anti-slip property is achieved by incorporating rubber particles into the coating formulation, creating a composite material that provides both security and durability. This approach integrates the anti-slip function into the coating material itself rather than requiring separate components or complex assembly processes.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The anti-slip function is merged with the protective coating by combining rubber particles with the nylon coating material. This integration allows the coating to serve multiple functions (protection, anti-slip, and aesthetic finish) in a single application process, reducing overall process complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 combination of a nylon coating and anti-slip coating effectively prevents the buckle from sliding along smooth straps, maintaining the adjusted fit of garments and withstanding repeated washing cycles.

Implementation Method 1

an anti-slip coating disposed on the nylon coating

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9918521B1Adjustable buckle
Publication Date: 2018.03.20 FASTECH
  • US9918521B1 patent drawing
  • US9918521B1 patent drawing
  • US9918521B1 patent drawing

AI summary

An adjustable buckle for a strap includes a slider, a nylon coating disposed on the slider, and an anti-slip coating such as rubber disposed on the nylon coating. The slider is configured to be attached to a strap.