Strap Adjustment Buckle With Fixed Obstacle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing strap adjustment systems face challenges in maintaining strap adjustment under varying tension, often requiring mobile blocking parts that complicate the design and make adjustments difficult.
Innovation Solution
The proposed strap adjustment system features a strap divided into first and second strands, an adjustment loop with a channel for the strap to slide through, and a hood that forms an obstacle to prevent loop enlargement, all without using a mobile blocking part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable blocking part is used to maintain strap adjustment under tension, then the adjustment stability is improved, but the device complexity increases and the ease of operation deteriorates
Solution Approach 1:
The patent removes the movable blocking part from the adjustment buckle, extracting the problematic element that caused complexity and operational difficulty. The strap adjustment is maintained through the inherent friction between the strap and the buckle body, combined with the obstacle that prevents loop enlargement, eliminating the need for additional locking components.
Solution Approach 2:
The adjustment buckle is designed to maintain its own adjustment automatically through the friction between the strap and buckle body, without requiring a separate movable blocking part. The obstacle prevents loop enlargement, and the strap's own tension maintains the adjustment through friction, making the system self-regulating.
2Reliability
If a movable blocking part is used to prevent strap slippage, then the adjustment maintenance is improved, but the ease of operation deteriorates due to difficulty in re-adjustment
Solution Approach 1:
The movable blocking part is completely removed from the design. Instead, the obstacle prevents loop enlargement while the strap can still be pulled through the buckle body to re-adjust the length. The friction between strap and buckle body maintains adjustment during use, but allows re-adjustment when needed.
Solution Approach 2:
Instead of using a movable part to block and lock the strap, the design inverts the approach by using a fixed obstacle that prevents loop enlargement while relying on friction to maintain adjustment. This allows the strap to be freely adjusted in one direction while preventing reverse movement that would cause slippage.
3Reliability
If the cover is positioned close to the separating wall to prevent loop enlargement, then the adjustment stability is improved, but the strap sliding is hindered
Solution Approach 1:
The obstacle (cover) is positioned at a specific distance from the separating wall to create different functional zones: close enough to prevent loop enlargement and maintain adjustment stability, but far enough to allow the strap to slide freely through the buckle body during adjustment. This local positioning optimizes both functions.
Solution Approach 2:
The obstacle provides partial blocking - it prevents loop enlargement entirely but does not completely block strap movement. The distance positioning ensures that the obstacle exerts just enough influence to prevent enlargement while allowing sufficient clearance for strap sliding during adjustment operations.
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
An adjustment system (1) includes a strap (2) and an adjustment buckle (3) configured to adjust the strap (2). The adjustment buckle (3) comprises a body (4) defining a first through hole (4a) and a second through hole (4b) extending across the thickness of the body (4). A separating wall (5) is attached to the body (4). The separating wall (5) separates the first through hole (4a) and the second through hole (4b) in a first direction perpendicular to the thickness of the body. The strap (2) forms a loop inside the body (4) and passes around the separating wall (5). A cover (6) is attached to the body (4) and mounted opposite the separating wall (5). The cover (6) and the separating wall (5) are separated by a distance greater than the thickness of the strap (2).