Buckle With Three-Sided Projected Hook Surfaces
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Solution Overview
Problem
Conventional buckles have a weak coupling force due to small contact surfaces between the projected parts of the male latch and the hooked projections of the female receptacle, leading to potential separation under low external pressure and damage from excessive force.
Innovation Solution
The buckle design features a male latch with hooks having three projected surfaces from three side surfaces of the arm, which increases the coupling area and distributes force more evenly, coupled with a female receptacle that includes a receiving part with a hooked projection and support member to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the projected part is formed at one or two side surfaces of the arm, then the structure is simple, but the coupling force is weak and the contact area is small
Solution Approach 1:
The projected part is extended to include three projected surfaces (first, second, and third surfaces) instead of one or two surfaces, adding a dimensional aspect to increase the contact area with the hooked projection of the female receptacle. This multi-surface configuration enhances the coupling force while maintaining structural simplicity.
2Ease of manufacture
If the projected part has small contact surface, then the manufacturing is easy, but the coupling force is insufficient and separation occurs under low external pressure
Solution Approach 1:
By forming the projected part with three projected surfaces (first, second, and third surfaces) instead of limited to one or two surfaces, the contact area with the hooked projection is significantly increased. This multi-dimensional surface configuration enhances coupling reliability and prevents separation under low external pressure while remaining compatible with standard manufacturing processes.
3Device complexity
If the projected part is formed with limited surfaces, then the device complexity is low, but excessive force can damage the projected part or hooked projection
Solution Approach 1:
The projected part is configured with three projected surfaces (first, second, and third surfaces) that distribute excessive force across multiple contact points with the hooked projection. This multi-surface arrangement prevents concentration of stress on a single surface, thereby reducing the risk of damage from excessive force while maintaining reasonable structural complexity.
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 increased coupling area and even force distribution enhance the buckle's holding strength, preventing separation under external pressure and reducing the risk of damage to the projected parts or hooked projections.
Implementation Method 1
The male latches 11a, 11b and 11c and female receptacles 12a, 12b and 12c are made of plastic for elasticity. Accordingly, arms 14a, 14b and 14c and projected parts 13a, 13b and 13c of the hooks of the male latches are inserted into the receiving parts of the female receptacles while they are deformed toward guide projections at the middle thereof. In this time, when the hook is located in the receiving part of the female receptacle, the hook is restored to an original state and thus the projected part 13a, 13b and 13c is engaged with a hooked projection of the receiving part.
Data Source
AI summary
The present invention relates to a buckle that includes a male latch having an improved shape. An object of the present invention is to provide the buckle that includes a projected part formed on a hook of the male latch, where the projected part has three projected surfaces projected from three side surfaces of the arm. The buckle comprises: the male latch including a pair of hooks each of which has three projected surfaces; and a female receptacle coupled to the male latch by holding the projected surfaces formed on the each hook of the male latch, where the male latch is inserted into the female receptacle.