Buckle Leg Portions Slit Swingable Disengagement
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Solution Overview
Problem
Conventional buckles face issues with operability during disengagement due to elastic deformation and potential breakage, especially when external forces are applied, leading to difficulty in disengaging and increased risk of deformation or breakage.
Innovation Solution
The buckle design features a plug with leg portions that include an outer and inner leg piece connected by a distal end connection and an arm portion, forming a slit between them, allowing for swingable movement across the slit, which reduces the force required for disengagement and enhances structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer leg piece and inner leg piece are made elastically deformable, then the buckle can prevent breakage under external forces, but the inner leg piece becomes unyielding during disengagement and the disengaging operation becomes difficult
Solution Approach 1:
The leg piece is divided into multiple segments: the outer leg piece, the inner leg piece, and the connection portion connecting them. This segmentation allows each part to have different functional characteristics - the outer leg piece provides elastic deformation for breakage prevention, while the connection portion allows controlled movement for easy disengagement.
Solution Approach 2:
Different portions of the leg piece structure are given different mechanical properties. The outer leg piece and inner leg piece are made elastically deformable to prevent breakage, while the connection portion is designed with specific geometric features (protrusions and grooves) that allow controlled relative movement during disengagement, creating local variations in rigidity and flexibility.
2Device complexity
If base end portions of the outer leg piece and inner leg piece are not connected, then the structure is simpler, but the outer leg piece becomes prone to breakage when force is applied
Solution Approach 1:
The connection between outer and inner leg pieces is achieved through a segmented design with discrete connection portions featuring protrusions and grooves, rather than a continuous rigid structure. This provides the necessary structural support while maintaining relative simplicity.
Solution Approach 2:
The outer leg piece and inner leg piece are combined through the connection portion to form an integrated leg piece assembly that resists breakage. The connection portion merges the two pieces structurally while allowing functional independence during operation.
3Device complexity
If the inner leg piece is formed in a thin plate shape, then the structure is simpler, but the outer leg piece and inner leg piece are easily deformed and engaging protrusions tend to disengage
Solution Approach 1:
While the inner leg piece is formed as a thin plate for simplicity, the connection portion is designed with specific geometric features (protrusions fitting into grooves) that provide localized structural reinforcement. This creates local quality variations where the thin plate maintains simplicity but the connection areas provide enhanced stability for reliable engagement.
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
This design enables easier disengagement with less force and minimizes deformation or breakage, even under external forces, improving operability and reliability of the engagement and disengagement process.
Implementation Method 1
elastic deformation upon operating thereof can easily occur due to the outer leg piece and the inner leg piece
Data Source
AI summary
Provided is a buckle including a plug and a socket. The plug includes a pair of leg portions, each of which is provided with an engaging portion, and outer and inner leg pieces extending while opposing each other. In the vicinity of a distal end portion of the leg portion, the outer and inner leg pieces are connected to each other by a distal end connection portion. On a base end portion of the leg portion, the outer and inner leg pieces are connected to each other by an arm portion. Opposing arm distal end portions of the arm portions are formed to define a slit having a predetermined space between the leg portions. The opposing arm distal end portions are connected to guide portions extending in a protruding direction of the leg portions. The pair of leg portions is provided to be swingable across the slit.