Helmet Retention System with Adjustable Strap Mechanism
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Solution Overview
Problem
Existing helmet retention systems lack a reliable and adjustable mechanism to securely fit various helmet types on users' heads, failing to provide a consistent and customizable fit for different head shapes and sizes.
Innovation Solution
A helmet retention system comprising a rear portion, adjustable straps, and an elongated member with an adjustment device that allows for selective adjustment of strap length between the rear and front portions of the helmet shell, utilizing lacing or wire systems to tighten or loosen the straps for secure fitting and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length strap system is used, then the structure is simple, but the helmet cannot be adjusted to fit different head sizes and shapes
Solution Approach 1:
The patent applies the dynamics principle by implementing an adjustable strap length mechanism that allows the retention system to change its configuration dynamically. The strap includes an elongated member that can be selectively extended or retracted, enabling the helmet to adapt to different head sizes and shapes while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent applies parameter changes by modifying the length parameter of the strap through the adjustment device. This allows the retention system to vary the strap length between a first position (longer) and a second position (shorter), providing customizable fit for different users without requiring multiple different helmet models.
2Adaptability or versatility
If an adjustable mechanism is added to modify strap length, then fit customization is improved, but the device complexity increases
Solution Approach 1:
The patent applies the nested doll principle by designing the elongated member to be partially received within the adjustment device. This nesting arrangement allows the adjustment mechanism to be compact and integrated into the existing retention system structure, minimizing the increase in overall device complexity while still providing adjustable functionality.
Solution Approach 2:
The adjustment device is designed to perform multiple functions: it not only adjusts the strap length but also serves as an attachment point for the elongated member and provides a user interface for length modification. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.
3Adaptability or versatility
If the elongated member is made movable relative to the helmet shell, then adjustability is improved, but the stability of the helmet may be compromised
Solution Approach 1:
The patent applies dynamics by creating a controlled movable connection between the elongated member and the helmet shell. The member can move relative to the shell during adjustment but is secured in place once adjusted, providing both adaptability during fitting and stability during use.
Solution Approach 2:
The patent applies preliminary action by securing the elongated member to the helmet shell at a predetermined location before use. This preliminary attachment ensures that once the strap is adjusted to the correct length, the connection remains stable and secure, preventing any compromise to helmet stability during normal wear.
Data Source
AI summary
The present application discloses a helmet, a retention system for a helmet, and a method of adjusting a helmet. In certain embodiments, the helmet comprises a helmet shell and a retention system attached to the helmet shell. The retention system generally comprises a rear portion connected to the rear of the helmet shell, at least one strap extending from the rear portion to a front portion of the helmet shell, and an adjustment device attached to the rear portion and configured to selectively adjust the length of the strap between the rear portion and the front portion of the helmet shell.