Helmet Microphone Arm Coupling for Rapid Emergency Removal
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Solution Overview
Problem
Existing protective helmets with integrated audio communication systems face challenges in rapid rescue interventions due to complex, bulky, and unreliable coupling systems for the chin guard, which can lead to accidental disconnection during emergencies.
Innovation Solution
A helmet design featuring a screw with an elastically flexible element and a release member that allows safe and quick detachment of the microphone arm from the shell, providing a simpler, lighter, and more reliable coupling system that prevents accidental disconnection while ensuring a stable electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex releasable coupling system with retaining means is used to attach the rigid arm to the shell, then the arm can be securely attached and detached, but the coupling system becomes bulky, heavy, and prone to accidental disconnection
Solution Approach 1:
The coupling system is divided into two independent parts: a male coupling member integrated into the rigid arm and a female coupling member integrated into the shell. This segmentation allows each part to be simple in structure while achieving reliable connection through their engagement, avoiding the need for complex retaining means.
Solution Approach 2:
The coupling members are merged with their respective components (rigid arm and shell) during manufacturing, creating an integrated solution. The male coupling member is formed as one piece with the rigid arm, and the female coupling member is formed as one piece with the shell, eliminating separate retaining mechanisms and reducing overall complexity.
2Reliability
If retaining means are added to prevent accidental opening of the coupling system, then accidental disconnection is prevented, but the system becomes heavier and more complex
Solution Approach 1:
The retention function is segmented from the coupling mechanism itself. Instead of adding complex retaining means to the coupling system, the design uses the inherent engagement between the male and female coupling members, where the geometric interlocking provides automatic retention without additional components, thereby avoiding extra weight.
3Ease of operation
If the rigid arm is made as a separate piece from the shell and releasably connected, then the helmet can be quickly removed for rescue, but the coupling system becomes bulky and heavy
Solution Approach 1:
The rigid arm is segmented from the shell, allowing independent removal. The male coupling member on the rigid arm engages with the female coupling member on the shell, enabling quick detachment by simply pulling the arm away, without requiring complex release mechanisms.
Solution Approach 2:
Instead of using complex retaining means to prevent accidental detachment, the design inverts the approach: the coupling members are designed so that their geometric interlocking naturally prevents accidental detachment, while intentional detachment is achieved by applying force to overcome the engagement, making the system both secure and easily removable when needed.
4Weight of moving object
If the coupling system is designed to be simple and light, then the helmet is lighter and less bulky, but the connection may be less reliable
Solution Approach 1:
The coupling members utilize curved or geometrically shaped engagement surfaces that provide natural mechanical interlocking. The male and female coupling members are designed with complementary geometries that create a stable connection through shape complementarity, ensuring reliable attachment without requiring additional retaining means or complex mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables easier and safer removal of the helmet during emergencies, reducing the risk of unintentional disconnection and allowing rapid access to the user's airways, while maintaining a stable and secure attachment for transportation.
Implementation Method 1
a release member operable by the user to elastically deform the elastically flexible element so as to allow the head of the screw to disengage from the hole
Data Source
Figure 1
Figure 2~3
Figure 4A~6
AI summary
A protective helmet (1), in particular for motor sports, is described, having an integrated audio communication system, comprising a rigid arm (3) in the shape of a chin guard carrying at its free end (3a) a microphone (20). The arm (3) is made as a piece separate from the shell (2) and is connected to the shell (2) by releasable coupling means (30, 10) so that it can, if necessary, be detached from the shell (2). The helmet (1) further comprises retaining means (4, 42; 5, 52; 61, 62; 72, 80, 86) for preventing unintentional release of said releasable coupling means (30, 10). The retaining means (4, 42; 5, 52; 61, 62; 72, 80, 86) comprise a screw (72) fixed to the arm (3) and protruding inwards with a head (76) thereof, an elastically flexible element (80) fixed to the shell (2) below the coupling portion (2a) and having a hole (84) in which the head (76) of the screw (72) engages, in the condition of attachment of the arm (3) to the shell (2), and a release member (86) operable by the user to elastically deform the elastically flexible element (80) so as to allow disengagement of the head (76) of the screw (72) from the hole (84).