Safety Helmet with Recessed Telescopic Visor Adjustment
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Solution Overview
Problem
Existing safety helmets with visors require holes for fixings, compromising electrical resistance compliance and lack comfort and ease of use, especially when accommodating prescription eyewear and nose, and do not allow for adjustable visor angles.
Innovation Solution
A safety helmet with a telescopic visor mechanism mounted within a recessed portion, using pivot mechanisms with telescopic lower arms for adjustable visor angles and a card holder mounted via non-invasive means, ensuring no holes in the helmet shell for improved electrical resistance compliance and user comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a visor is mounted on the helmet shell using traditional fixing methods, then the visor can be securely attached, but holes must be made in the helmet shell which compromises electrical resistance compliance
Solution Approach 1:
The pivot mechanisms are nested within a recessed portion of the helmet shell, with the visor mounted inside this recessed area. This nesting approach allows the visor to be securely attached through internal mounting structures without requiring external holes in the helmet shell, thereby maintaining electrical resistance compliance while achieving reliable visor attachment
Solution Approach 2:
A cover portion is introduced as an intermediary element that covers the recessed front portion of the helmet shell. This cover portion provides a mounting surface for the visor and pivot mechanisms while being integrated into the helmet structure, allowing secure visor attachment without compromising the electrical resistance properties of the main helmet shell
2Adaptability or versatility
If a fixed-angle visor is used, then the structure is simple, but it does not allow adjustment for different user comfort requirements and eyewear accommodation
Solution Approach 1:
The visor is designed with dynamic adjustability through telescopic lower arms in the pivot mechanism. These arms can extend and retract to change the visor angle relative to the helmet shell, allowing users to adjust the visor for different comfort requirements and eyewear accommodation. The dynamic nature of this adjustment mechanism maintains relatively simple construction while providing versatile positioning options
Solution Approach 2:
The visor angle parameter can be changed by extending or retracting the telescopic lower arms of the pivot mechanism. This parameter change capability allows the visor to be positioned at different angles to accommodate various user preferences and eyewear types, while the telescopic mechanism itself remains structurally simple
3Duration of action of stationary object
If the visor is exposed during storage, then it is easily accessible, but it is vulnerable to damage and has reduced lifetime
Solution Approach 1:
The visor is nested within the recessed portion of the helmet shell during storage, protected by the recessed structure and cover portion. This nesting arrangement shields the visor from external damage when not in use, extending its service life, while the recessed design allows the visor to be quickly deployed when needed
Data Source
Figure 1A~2
Figure 1B
Figure 3A~3B
AI summary
A safety helmet comprising a head mountable shell 10 defining a rear portion and a recessed front portion, and a transparent visor 24. The helmet further comprises a cover portion 16 over the recessed front portion to define a cavity 18. The transparent faceguard 24 is mounted by a pair of pivots having an upper (40, Figure 58) and lower arm (42, Figure 58), each arm (40 & 42, Figure 58) fixed at one end within the recessed portion and at the opposing end to the visor 24. The lower arm (42, Figure 58) is telescopic. The helmets disclosed may have locking means for retaining the visor 24 in the second position and can have a gripping portion 26 which extends from the cavity 18 when the visor 24 is in the first position. A method of manufacturing a cover portion 16 comprising a card holder is also disclosed.