Buckle Movable Plate Mechanism for Strap Stability
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Solution Overview
Problem
Existing buckles fail to provide a stable grip for the free end of a belt or strap, leading to slippage, and are either complex in design with hooks or unaesthetic with holes, complicating production and aesthetics.
Innovation Solution
A buckle design featuring a main structure with perimetric profiles and a movable rectangular plate with a window, where the plate translates to tighten the strap between the main structure's elements, providing a secure grip without hooks or holes, using metal or plastic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hooks or prongs are added to the buckle to fix the belt or strap, then the stability of the belt or strap is improved, but the device complexity increases and aesthetic appearance deteriorates
Solution Approach 1:
The buckle is divided into two functional parts: a stationary main structure and a movable plate. The movable plate can translate independently within rectilinear seats to provide the necessary gripping action, while the main structure remains stable. This segmentation allows the buckle to achieve stable fixation without adding complex hook mechanisms.
Solution Approach 2:
The plate is designed to be movable rather than fixed, allowing it to translate dynamically in response to strap tension. When the strap is pulled, the plate moves to tighten and grip the strap between the front profile and the third side of the plate. This dynamic movement provides reliable fixation through simple geometric interaction rather than complex mechanical components.
2Reliability
If hooks or prongs are added to the buckle to fix the belt or strap, then the stability of the belt or strap is improved, but the aesthetic appearance deteriorates due to holes in the belt
Solution Approach 1:
The invention extracts the necessary gripping function from traditional hook or prong mechanisms and implements it through the translation of the movable plate. The plate's movement creates a gripping action that secures the strap without requiring holes, hooks, or protruding elements, thereby maintaining the aesthetic appearance of the belt while achieving stable fixation.
3Reliability
If a movable plate is added to the buckle structure, then the grip on the strap is improved, but the device complexity increases
Solution Approach 1:
The movable plate integrates multiple functions into a single component: it guides the strap through its window, grips the strap through its translation movement, and limits its own movement through the rectilinear seats. This merging of functions into one simple movable component avoids the need for multiple separate parts and complex assembly, achieving improved grip without proportionally increasing device complexity.
Data Source
Figure 1~2
Figure 3~4
AI summary
Buckle (10) adapted to be crossed by a strap (12) or other similar band, and comprising a main structure (14) having a substantially rectangular shape and a plate (16) having a rectangular shape. The plate (16) is movable relative to the main structure (14) so that according to the movement of the strap (12), the plate (16) can approach a portion of the main structure (14) and lock the strap (12) in place.