Belt Buckle Through Opening and Guide Surfaces for Load Stability
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Solution Overview
Problem
Existing belt buckles face issues with dirt accumulation in blind insertion openings and weakened structures, limiting their ability to absorb higher loads effectively.
Innovation Solution
The design features a base body with guide surfaces and recesses that interact with the retaining lugs of the plug-in extension, forming a through opening that enhances stability by preventing tilting and distributing load asymmetrically, and includes a shoulder for additional guidance and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the insertion opening is designed as a blind hole, then the manufacturing process is simpler, but dirt accumulates in the insertion opening over time
Solution Approach 1:
Instead of creating a blind hole (ending inside the base body), the patent inverts the approach by creating a through opening that extends from the insertion side through the entire base body to the belt opening. This allows the insertion opening to be accessed from both ends, preventing dirt accumulation while maintaining manufacturing simplicity.
2Stability of the object's composition
If the slot-shaped recess is added for transverse guidance, then transverse guidance is improved, but the end of the plug-in extension is weakened
Solution Approach 1:
The patent extracts the transverse guidance function from the plug-in extension by introducing separate guide surfaces on the base body. These guide surfaces interact with the retaining lugs to provide transverse guidance without requiring recesses in the plug-in extension, thereby preserving the structural strength of the plug-in extension end.
3Force
If higher load capacity is desired, then the belt buckle can absorb higher forces, but the structural integrity may be compromised
Solution Approach 1:
The patent segments the load-bearing structure by introducing multiple retaining lugs on both sides of the plug-in extension, each interacting with corresponding guide surfaces on the base body. This segmentation distributes the load across multiple interaction points, increasing overall load-bearing capacity while maintaining structural integrity through symmetric load distribution.
Data Source
Figure 1~6
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AI summary
In a method for manufacturing a belt buckle, which comprises an insertion part (2) having at least one belt opening (4, 5) for guiding a belt (7) and a plug-in extension (15) extending in an insertion direction (16) with retaining lugs (17, 18) projecting transversely on both sides, and a receiving part (1) comprising a base body (19) with at least one belt opening (3) for guiding a belt (6) and with an insertion opening (20) extending from an insertion side (21) of the base body (19) for inserting the plug-in extension (15) of the insertion part (2) in the insertion direction (16) and pawls (24, 25) pivotably mounted on the base body (19), the insertion opening (20) is cut by means of a slot cutter (44) starting from the insertion side (21) of the base body (19) in the insertion direction (16) milled in and a through opening (20) extending through the base body (19) to the belt opening (3) in the base body (19),22). By milling the base body (19) of the receiving part (1) starting from the belt opening (3), at least one first and one second recess (36, 37) extending from the belt opening (3) and the through-opening (20, 22) are formed in a further milling operation, with guide surfaces (32, 33) on both sides in the transverse direction for the two transversely facing edge surfaces (34, 35) of the retaining lugs (17, 18) of the plug-in extension (15) of the insertion part (2) in the area of its opening into the belt opening (3). (Fig. 7)