Helmet Ventilation Cover Pivoting for Airflow and Weather Protection
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Solution Overview
Problem
Existing helmets lack an effective mechanism to introduce and increase airflow into the helmet body, leading to discomfort due to humidity and temperature rise, and exposing the wearer's head to external elements during rain or snow.
Innovation Solution
A helmet design featuring a ventilation hole in the helmet body, a base member with a through-hole, and a cover that reciprocates between closed and open positions to control airflow, with the cover being pivotally rotatable to increase the airflow area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through-hole is provided in the helmet body to introduce external air, then air can be introduced into the inner space, but foreign substances may enter the inner space when it rains or snows
Solution Approach 1:
A base member is introduced as an intermediary component between the ventilation hole and the inner space. This base member includes a through-hole that can be selectively opened or closed, acting as a mediator that allows air to pass through while preventing foreign substances from entering when the hole is closed.
Solution Approach 2:
The cover is designed to be movable between a closed position (blocking the through-hole) and an open position (allowing air flow). This dynamic structure enables the helmet to adapt to different conditions: closed during rain/snow to prevent foreign substance entry, and open during normal conditions to allow air introduction.
2Ease of operation
If a through-hole is provided in the front of the helmet, then air can be introduced, but the amount of air introduced varies depending on the wearer's face direction
Solution Approach 1:
The cover is designed to pivot around a rotation shaft positioned at one side of the cover. This pivotal movement allows the cover to automatically adjust its position relative to the wearer's face direction, maintaining optimal air flow path regardless of whether the wearer is looking forward, to the side, or bowing their head.
Solution Approach 2:
The cover's pivotal rotation adds a rotational degree of freedom to the air flow control mechanism. Instead of a simple linear opening/closing motion, the cover can rotate around the rotation shaft to adjust the air flow direction in multiple dimensions, ensuring consistent air introduction across different wearer orientations.
3Productivity
If the cover is made pivotally rotatable to increase airflow area, then more air can be introduced, but the device complexity increases
Solution Approach 1:
The cover's pivotal rotation is designed to be passive, utilizing the natural movement of the wearer's head and face direction to automatically adjust the air flow path. The rotation shaft and cover geometry work together to enable self-adjustment without requiring motors, sensors, or complex control mechanisms, thus maintaining simplicity while achieving variable air flow control.
Data Source
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AI summary
A helmet is provided. A helmet according to an aspect of the present invention includes: a helmet body including a ventilation hole which is formed through one side thereof and enables a fluid to communicate between an inner space thereof and the outside; a base member covering the ventilation hole and including a through-hole which is formed through one side thereof and enables a fluid to communicate between the inner space of the helmet body and the outside; and a cover covering the through-hole, wherein the cover: reciprocates between a first position at which the cover is disposed so as to close the through-hole and a second position which is adjacent to the first position and at which the through-hole is opened by the cover; and is pivotally rotatable at the second position around a rotation shaft positioned at one side of the cover so that the other side of the cover is spaced apart from the helmet body.