Adjustable Handlebar Fastener With Locking Strip Diameter Fit
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Solution Overview
Problem
Existing fasteners for securing objects to bicycle handlebars lack adjustability in diameter, leading to either incomplete mounting or inadequate tightening, which can result in the fastener rotating and colliding with other bicycle structures during use.
Innovation Solution
A size-adjustable fastener comprising a first fastener with connection strips and limiting blocks, and a second fastener with connection holes and limiting holes, allowing the connection strips to be inserted into the holes to adjust the diameter of the through hole, ensuring secure mounting and tightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fastener uses a fixed diameter through hole, then the structure is simple, but it cannot adapt to different handlebar diameters
Solution Approach 1:
The fastener is divided into two separate fasteners (first fastener and second fastener) that can be independently adjusted. Each fastener has connection strips with limiting blocks that can be positioned at different locations, allowing the overall diameter of the fastener assembly to be segmented and adjusted to match different handlebar diameters.
Solution Approach 2:
The fastener transitions from a static fixed-diameter design to a dynamic adjustable-diameter design. The connection strips can be moved along the fasteners to different positions, and the limiting blocks can engage with different connection holes, enabling the fastener diameter to be dynamically adjusted according to the handlebar diameter being used.
2Reliability
If the through hole diameter is larger than the handlebar diameter, then the fastener can be mounted, but it cannot be tightly fastened
Solution Approach 1:
The fastener system allows changing the effective diameter parameter by selecting different connection hole positions. When the handlebar diameter is smaller than the default through hole diameter, the connection strips are repositioned to reduce the overall diameter of the fastener assembly, ensuring a tight fit while maintaining ease of mounting through the same basic insertion mechanism.
3Reliability
If the fastener is tightly fastened, then stability is improved, but adjustment complexity increases
Solution Approach 1:
The limiting blocks on the connection strips automatically engage with the connection holes through a self-servicing mechanism. When the connection strip is inserted and pushed, the limiting block naturally snaps into the connection hole, providing automatic positioning and locking without requiring additional adjustment mechanisms or complex operations, thus achieving stable fastening with simple adjustment.
Data Source
AI summary
A size-adjustable fastener includes: a first fastener and a second fastener. The first fastener is arranged with connection strips; an end of the connection strip is arranged with a limiting block; a transverse cross section of the limiting block is larger than that of the connection strip; the second fastener defines connection holes; each connection hole is communicated with a limiting hole, and the limiting hole is located at a side of the connection hole; the connection strip is inserted into the connection hole from a side of the second fastener; the connection strip is moved to approach the limiting hole to enable the limiting block to abut against the other side of the second fastener, enabling an end of the second fastener is connected to an end of the first fastener. The other end of the second fastener is connected to the other end of the first fastener.