Motorcycle Topcase Rotary Mount Lock to Prevent Accidental Release
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Solution Overview
Problem
Current motor cycle trunks made of rigid materials have inefficient and complicated attachment mechanisms, and the closing mechanism often inadvertently releases the trunk when the user intends to open it, such as for placing a helmet.
Innovation Solution
A trunk design with a combination of a hooking element and an engagement element that requires a rotational movement and a key-activated locking mechanism to secure and detach the trunk, ensuring it remains locked in the closed position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional helmet is securely fastened to the rider, then head protection is improved, but the rider cannot easily access items stored in the topcase
Solution Approach 1:
A strap is introduced as an intermediary element between the helmet and the rider's hand. The strap is attached to the helmet and extends to allow the rider to pull the helmet away from the head without removing it completely, enabling access to the topcase while maintaining head protection during normal riding
2Reliability
If the topcase is locked for security, then theft prevention is improved, but the rider cannot quickly access items during riding
Solution Approach 1:
The locking mechanism is extracted from the topcase and relocated to the helmet. This allows the rider to lock the topcase contents by securing the helmet, and to quickly access items by simply pulling the helmet away from the head, maintaining security while enabling rapid access during riding
3Ease of manufacture
If standard helmet materials are used, then manufacturing cost is reduced, but UV protection and thermal insulation are insufficient
Solution Approach 1:
The helmet incorporates a composite structure with a UV-blocking layer integrated into the helmet material. This composite construction provides enhanced UV protection and thermal insulation while maintaining compatibility with standard helmet manufacturing processes and materials
4Reliability
If the helmet is designed to be securely held during riding, then safety is improved, but the rider cannot easily remove it for topcase access
Solution Approach 1:
The helmet attachment system is designed with dynamic characteristics - securely held during normal riding conditions but easily removable when the rider pulls on the attached strap. This allows the helmet to adapt between two states: securely positioned for safety during riding, and easily movable for topcase access when needed
Data Source
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AI summary
Trunk for motor cycles or the like consisting of a three-dimensional shell or a soft and flexible casing enclosed on itself and formed by two parts (103, 203) of the shell that mutually complete in said three- dimensional shell or in said flexible casing. Said at least two parts (103, 203) of the shell or casing are separated from each other by a separation line extending from one end to the other of a hinge portion (603), allowing the opening and closing of said three-dimensional shell or casing, while are provided means for removably retaining said two shell portions (103, 203) to each other in said closed position of the three-dimensional shell or of said casing and removable attachment means of said three-dimensional shell to a structural part of the motor cycle or the like comprising a first hooking element (4) stably fixed to the motor cycle and a second engagement element which is carried by one of said two parts of the shell, a further locking element being provided for said engagement element in said hooking element. According to the invention, the engagement/disengagement movement of said engagement element from said hooking element comprises a stroke which occurs along an circumferential arc so that engagement between the hooking element and the engagement element occurs by rotating the engagement element in one direction relative to the hooking element and disengagement occurs by rotating the engagement element in the opposite direction, said locking elements preventing rotation of the engagement element relative to the hooking element when the engagement element is engaged in the hooking element.