Removable Chin Guard Fixation With Concealed Helmet Mounts

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Solution Overview

Problem

Existing protective helmets with removable chin guards suffer from usability issues due to exposed mounting holes that allow dirt and moisture ingress, affect aerodynamics, and create noise, with complex assembly and fragile disassembly mechanisms.

Innovation Solution

A protective helmet design featuring a cover unit that conceals connecting elements, allowing tool-free, intuitive assembly and disassembly of the chin guard, maintaining a uniform outer surface and preventing airflow and noise ingress, while using dimensionally stable components for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the chin guard is removed from the helmet, then the helmet can be used without the chin guard, but mounting holes remain exposed allowing dirt and moisture ingress, affecting aerodynamics and creating noise

Engineering Contradiction:

Improveusability without chin guardVSAvoiddirt and moisture ingress

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The cover unit is pre-positioned on the helmet to automatically conceal the mounting holes when the chin guard is removed, preventing dirt and moisture ingress before these contaminants can enter the helmet structure

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The cover unit is extracted as a separate, removable component that can be independently manipulated to conceal or expose the mounting holes, allowing the helmet to maintain a closed surface when the chin guard is not attached

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If the chin guard is removed from the helmet, then the helmet can be used without the chin guard, but the exposed mounting holes impair aerodynamic properties and cause unwanted noise

Engineering Contradiction:

Improveusability without chin guardVSAvoidaerodynamic impairment and noise

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The cover unit is pre-positioned to automatically conceal the mounting holes when the chin guard is removed, maintaining a smooth aerodynamic surface and preventing noise generation before these issues can occur

Inventive Principle:

Principle #10Preliminary action

3Reliability

If a sliding button locking mechanism is used to attach the chin guard, then the chin guard can be securely fixed, but the assembly and disassembly steps become complex and the disassembly means become fragile

Engineering Contradiction:

Improvechin guard fixation securityVSAvoidassembly and disassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The locking function is extracted from a complex sliding button mechanism and integrated into the cover unit itself, which serves both as a protective cover and as the primary interface for attaching and detaching the chin guard, simplifying the overall assembly process

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The cover unit is designed to perform multiple functions: it conceals the mounting holes, provides structural support, and serves as the interface for both attaching and detaching the chin guard, eliminating the need for separate locking mechanisms

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If a separate mounting piece is used for the locking mechanism, then the chin guard can be securely attached, but the mounting piece protrudes from the helmet shell creating non-uniform outer surface, affecting aerodynamics and noise

Engineering Contradiction:

Improvechin guard attachment securityVSAvoidouter surface uniformity

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The mounting piece and cover unit are merged into a single integrated component, where the cover unit itself provides the attachment interface for the chin guard, eliminating the need for separate protruding mounting pieces and maintaining a uniform outer surface

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4631380A1Safety helmet with chin bracket fixation, chin bracket fixation and method for assembling and disassembling the chin bracket fixation.

Publication Date: 2025.10.15 SCHUBERTH GMBH

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AI summary

The invention relates to a protective helmet (1) with a helmet shell (10) for covering an upper head region and at least partially side regions of a helmet wearer when worn, wherein the helmet shell (10) has a front side (12) with a viewing cutout (14), wherein the helmet shell (10) has a cheek region (20) on the left and right sides, wherein a connecting device (30) for detachably mounting a chin guard (100) is arranged in the cheek region (20), and wherein the connecting device (30) has at least one connecting means (40) for connection to the chin guard (100). The connecting device (30) has a covering unit (80) which is designed to be displaceable between an open mounting position and a closed covering position, and the covering unit (80) conceals the at least one connecting means (40) in the closed covering position.