Helmet Visor Attachment Mechanism With Segmented Removal Prevention

Solution Overview

Problem

The existing visor attachment mechanisms in helmets face challenges in achieving a balance between easy attachment and detachment while preventing accidental removal, requiring precise manufacturing and size adjustments, which complicates mass production.

Innovation Solution

The mechanism incorporates a movable plate with a slit and dual removal preventing means, including an engaging projecting portion and concave portion, along with a concave corner portion and position regulating portions, to securely attach and detach the visor ends without the need for precise manufacturing or size adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the attachment mechanism is designed to enhance the click function to prevent accidental removal, then the visor ends are securely attached, but the visor becomes hard to attach and detach

Engineering Contradiction:

Improveprevention of accidental removalVSAvoidease of attachment and detachment

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The attachment mechanism is divided into two independent functional parts: a click function portion for securing the visor, and a removal preventing portion with protrusions and grooves for preventing accidental detachment. This segmentation allows each part to perform its specific function optimally without interfering with the other, resolving the contradiction between secure attachment and easy operation.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If the attachment mechanism is designed to weaken the click function for easy attachment and detachment, then the visor can be easily operated, but the visor ends are readily removed accidentally

Engineering Contradiction:

Improveease of attachment and detachmentVSAvoidprevention of accidental removal

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The attachment mechanism is divided into two independent functional parts: a click function portion for securing the visor, and a removal preventing portion with protrusions and grooves for preventing accidental detachment. This segmentation allows each part to perform its specific function optimally without interfering with the other, resolving the contradiction between secure attachment and easy operation.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the click function is adjusted to appropriate strength with precise manufacturing and size adjustment, then the visor can be easily attached and detached while preventing accidental removal, but mass production becomes difficult

Engineering Contradiction:

Improveease of attachment and detachmentVSAvoidmass production capability

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The attachment mechanism is divided into two independent functional parts: a click function portion for securing the visor, and a removal preventing portion with protrusions and grooves for preventing accidental detachment. This segmentation allows each part to perform its specific function optimally without interfering with the other, resolving the contradiction between secure attachment and easy operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The design changes from requiring precise dimensional control and size adjustments to a configuration-based solution where protrusions and grooves provide functional constraints. This parameter change from dimensional precision to geometric configuration enables easier mass production while maintaining ease of operation and accidental removal prevention.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9032548B2Visor attachment mechanism in helmet

Publication Date: 2015.05.19 SHOEI CO LTD

AI summary

In this invention, a visor is configured to be inserted into a slit of a movable plate. One of an engaging projecting portion and an engaging concave portion is provided on the visor, and the other is provided on the movable plate. When the visor pivots in a first direction about the engaging projecting portion, a concave corner portion of the visor comes into contact with a first position regulating portion of the movable plate, thereby impeding the pivotal movement of the visor. When the visor pivots in a second direction, the outer wall surface of the visor comes into contact with wall portions of the movable plate, thereby impeding the pivotal movement of the visor.