Strap Retainer With Dual-Mode Slider For Chinstrap Safety
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Solution Overview
Problem
Safety helmets require a chinstrap attachment system that can adjust between automatic release and secure attachment modes to meet varying force requirements in different work environments, with existing solutions lacking flexibility and safety standards compliance.
Innovation Solution
A strap retainer with a clip and slider mechanism that allows for adjustable retention modes, enabling automatic release at a specific force limit in one mode and secure attachment beyond that limit in another, using a mirrored latch system and a sliding mechanism to switch between lock and release settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a chinstrap attachment system is designed for secure attachment, then the reliability of helmet retention is improved, but the ability to automatically detach under high force is lost
Solution Approach 1:
The attachment system transitions from a static fixed-attachment design to a dynamic system with two adjustable modes. The slider mechanism allows switching between a first mode (automatic release at lower force) and a second mode (secure attachment requiring destructive means to detach), enabling the system to adapt its retention characteristics based on operational requirements.
Solution Approach 2:
The system changes the force parameter threshold for detachment by switching between two modes. In the first mode, the chinstrap releases at a first force limit, while in the second mode, it requires exceeding a second force limit that can only be achieved through destructive means. This parameter change resolves the contradiction between secure attachment and automatic detachment capability.
2Object-affected harmful factors
If a chinstrap attachment system allows automatic release, then the safety in high-force situations is improved, but the security of attachment in normal use is reduced
Solution Approach 1:
The system dynamically adjusts its release characteristics through the slider mechanism. When positioned in the first mode, the system provides automatic release at a controlled force limit to prevent injury from excessive force. When positioned in the second mode, the system provides secure attachment that prevents accidental release while still allowing controlled release through the slider mechanism.
Solution Approach 2:
The force threshold parameter is changed by switching between modes. The first mode sets a lower force limit for automatic release, protecting against harmful force exposure. The second mode raises the force limit to require destructive means, ensuring attachment security. This parameter adjustment resolves the contradiction between safety and security.
3Device complexity
If a fixed secure attachment system is used, then the simplicity of the mechanism is maintained, but the flexibility for different work environments is lost
Solution Approach 1:
The addition of the slider mechanism introduces dynamic adjustability to the attachment system. The slider can be positioned in two discrete locations (first mode or second mode), providing environmental flexibility without significantly complicating the overall mechanism. Each position corresponds to a specific work environment requirement.
Solution Approach 2:
The attachment system becomes multi-functional by incorporating the slider mechanism that enables two distinct operational modes. The same physical attachment system can serve different work environments: automatic release for safety-critical applications and secure attachment for stability-critical applications, thus achieving universality without proportionally increasing complexity.
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 system provides a flexible and safe attachment method for chinstraps, allowing nondestructive detachment at a predetermined force and preventing detachment only through destructive means at higher forces, thus meeting diverse application needs and safety standards.
Implementation Method 1
The first latch may be resiliently biased toward the engage position... The second latch may be resiliently biased toward the engage position too
Data Source
AI summary
A strap retainer (4) for attaching a chinstrap (3) to a safety helmet (1). The strap retainer (4) includes a clip (5) that has a first latch (52A) that is movable between an engaged position and a retracted position. The first latch (52A) is resiliently biased toward the engaged position. The strap retainer (4) further has a slider (6) that is displaceable between a lock setting and a release setting. The lock setting causes a movement of the first latch (52A) toward the retracted position to be impeded, and the release setting causes the impeding to be suspended.