Motorcycle Helmet Holder Restriction Part Prevents Frame Cover Deformation
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Solution Overview
Problem
Conventional saddle type vehicle helmet holders face issues with helmet theft prevention due to potential deformation of the frame cover, leading to a space that allows the hook ring to be pulled out, which complicates the design, increases weight, and reduces productivity.
Innovation Solution
A helmet holder system with a restriction part positioned between the hook part and the vehicle body frame, integrated with a separable frame cover design, featuring a hooking portion, guide portion, and a fixed part to prevent deformation and secure the helmet, using a metal wire or metal bar material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the frame cover is made thinner to reduce weight and simplify manufacturing, then productivity and design flexibility improve, but the frame cover becomes prone to deformation creating spaces that allow helmet theft
Solution Approach 1:
The helmet holder is divided into functionally independent components: a hook part for holding the helmet and a restriction part for preventing frame cover deformation. This segmentation allows each part to be optimized independently - the restriction part provides security while the frame cover can remain thin for manufacturing efficiency.
Solution Approach 2:
The restriction part acts as an intermediary element between the hook part and the frame cover. It mediates the interaction by restricting frame cover deformation at the critical location, thereby preventing space formation that would allow helmet theft, while allowing the frame cover itself to remain thin.
2Reliability
If the frame cover thickness is increased or ribs are added to prevent deformation, then anti-theft security improves, but weight increases and manufacturing complexity increases
Solution Approach 1:
The deformation prevention function is extracted from the frame cover structure itself and transferred to a separate restriction part of the helmet holder. This extraction allows the frame cover to remain simple and thin while the restriction part provides the necessary deformation constraint to prevent theft.
Solution Approach 2:
Instead of preventing deformation by making the frame cover thicker in the radial dimension, the solution adds a new dimensional constraint through the restriction part that limits the frame cover's movement capability, thereby preventing space formation without increasing frame cover thickness.
3Reliability
If an integrally molded frame cover is used to prevent deformation, then anti-theft security improves, but the molding mold size increases reducing productivity
Solution Approach 1:
The rigidity enhancement function is extracted from the frame cover molding itself and transferred to the restriction part of the helmet holder. This allows the frame cover to be molded in smaller, more productive segments while the restriction part provides the necessary deformation constraint.
Solution Approach 2:
Instead of making the entire frame cover thick and rigid through integral molding, the solution applies local quality by placing the restriction part only at the specific location where deformation prevention is needed, allowing the rest of the frame cover to remain thin and easily manufacturable.
4Ease of manufacture
If the frame cover is divided into multiple separable pieces, then design flexibility and manufacturing ease improve, but the frame cover becomes more prone to deformation creating theft opportunities
Solution Approach 1:
The helmet holder is segmented into a hook part and a restriction part, where the restriction part specifically addresses the security vulnerability created by divided frame covers by preventing deformation at the critical location near the helmet holding area.
Solution Approach 2:
The restriction part provides preliminary anti-action by preemptively restricting frame cover deformation before any theft attempt can occur. This pre-restriction counteracts the vulnerability introduced by using separable frame cover pieces.
Data Source
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AI summary
A saddle type vehicle includes: a seating seat on which a passenger is allowed to be seated; a seat rail (11) to which the seating seat is allowed to be attachably and detachably attached; a frame cover (16) covering outer sides of the seat rail; a helmet holder (8) provided on the seat rail; and a restriction part (81) provided in the vicinity of the helmet holder (8) on the seat rail (11) and projecting toward an inner peripheral surface of the frame cover (16), in which the helmet holder includes: a hooking portion (821) on which a hook ring (91) of a helmet is allowed to be hooked; and a guide portion (822) extending from the hooking portion, and the restriction part (81) is provided in the middle, of the guide portion, in a longitudinal direction.