Bicycle Helmet Visor Guide Slot Mechanism
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Solution Overview
Problem
Existing bicycle helmets with exchangeable visors are difficult to replace due to unclearly visible attachment devices, making the process cumbersome for users.
Innovation Solution
A bicycle helmet design featuring a guide slot on the inside of the shell that extends to the receiving gap, allowing the visor's holding section to be easily inserted and the operating element to be accessed from the outside, with a closure element that can be securely fastened to lock the visor in place, facilitating simple and stable visor replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operating element is attached to the visor using conventional attachment devices, then the visor can be secured to the helmet shell, but the attachment devices are not clearly visible through the operating slot, making visor replacement difficult
Solution Approach 1:
A guide slot is introduced as an intermediary structure that extends from the receiving gap to the front edge of the shell. This guide slot serves as a mediator that guides the holding section of the visor during insertion and removal, making the attachment and detachment process visible and controllable without compromising the stability of the attachment devices
Solution Approach 2:
The attachment process is segmented into distinct functional zones: the receiving gap for final positioning, the guide slot for insertion guidance, and the operating slot for control element access. This segmentation allows each zone to perform its specific function optimally, with the guide slot specifically designed to make the attachment devices visible and accessible
2Adaptability or versatility
If the visor is made exchangeable to allow customization and replacement, then user preference and adaptability are improved, but the replacement process becomes cumbersome due to difficult-to-access attachment devices
Solution Approach 1:
The guide slot acts as an intermediary that simplifies the exchange process by providing a clear path for inserting and removing the visor. It mediates between the user's action of replacing the visor and the attachment devices, making the process straightforward despite the exchangeable nature of the component
Solution Approach 2:
The guide slot extends in a longitudinal direction from the receiving gap to the front edge of the shell, creating an additional dimensional pathway for visor replacement. This longitudinal extension provides a new dimension of access that simplifies the replacement process while maintaining the exchangeability of the visor
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
A bicycle helmet (11, 13) comprises a shell (13, 15) and a visor (15, 17). The shell (13, 15) has a curved receiving gap (17, 19) between an outer side and an inner side and in which the visor (15, 17) is moveably received. The visor (15, 17) comprises a protective section (29, 31) and a retaining section (27, 29) which has an operating element (31, 33) on an upper side. The shell (13, 15) has an operating slot (35, 37) on the outer side thereof, which operating slot extends up to the receiving gap (17, 19) of the shell (13, 15), wherein the operating element (31, 33) of the visor (15) engages in the operating slot (35, 37). The shell (13, 15) further comprises a guide slot on the inner side thereof, which guide slot extends up to the receiving gap (17, 19) and up to a front side edge of the shell (13, 15) and is open there.