Helmet Pivot Mechanism With Moving Axis for Smooth Visor Opening
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Solution Overview
Problem
Conventional helmets often interfere with pivot members such as shields and sun visors, requiring excessive force for opening or closing, leading to decreased convenience of use.
Innovation Solution
A helmet design featuring a movable member that linearly displaces forward or backward, with a cam pivotally seated on a cam seat part and elastically supported by a pressing member, allowing the pivot axis to move forward during pivoting, minimizing interference and enabling smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pivot members such as shields and sun visors are coupled to the helmet body with a fixed pivot axis, then the structure is simple, but the pivot members interfere with the helmet body during opening and closing, requiring excessive force
Solution Approach 1:
The patent applies the dynamics principle by making the pivot axis movable instead of fixed. The pivot axis is designed to move forward when the pivot member rotates from the closed position toward the open position, which prevents interference with the helmet body and enables smooth operation without requiring excessive force.
Solution Approach 2:
The patent uses a cam mechanism as an intermediary element between the pivot member and the helmet body. The cam converts the rotational motion of the pivot member into linear motion of the pivot axis, mediating the interaction between these components to achieve interference-free pivoting.
2Ease of operation
If the pivot axis remains stationary during pivoting, then the structure is simple, but the pivot member cannot avoid interference with the helmet body, deteriorating convenience of use
Solution Approach 1:
The patent transforms the static pivot axis into a dynamic one that moves during operation. The pivot axis moves forward as the pivot member opens, which eliminates interference with the helmet body and significantly improves convenience of use.
Solution Approach 2:
The patent introduces motion in an additional dimension by allowing the pivot axis to move not only with the rotation of the pivot member but also in the forward direction. This dimensional change enables the pivot member to clear the helmet body during opening.
3Ease of operation
If a cam mechanism is introduced to move the pivot axis forward during pivoting, then pivot operation becomes smooth, but the device complexity increases
Solution Approach 1:
The patent merges the cam mechanism with the existing pivot member structure, making the cam an integral part of the pivot member rather than a separate component. This integration reduces the number of discrete parts while maintaining the functionality of moving the pivot axis forward during pivoting.
Solution Approach 2:
The cam mechanism serves multiple functions: it converts rotational motion to linear motion, moves the pivot axis forward to avoid interference, and can be integrated into the pivot member structure itself. This multi-functionality reduces the need for additional separate components.
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 design ensures smooth and efficient pivoting of pivot members, improving usability and structural stability by allowing easy attachment and detachment, while maintaining stability and reliability during the pivot process.
Implementation Method 1
a pressing member disposed in the fixing member to elastically support the cam and press the cam backward
Data Source
AI summary
A helmet is disclosed. A helmet according to an exemplary embodiment of the present invention may include: a helmet body capable of surrounding a user's head; a fixing member which is fixed to a side surface of the helmet body and has a cam seat part; a movable member coupled to the fixing member so as to be linearly movable forward or backward; a pivot member which has a cam pivotally seated on the cam seat part and is disposed to be engaged with the movable member so as to be pivotable around the cam as a pivot axis; and a pressing member disposed in the fixing member to elastically support the cam and press the cam backward, wherein when the pivot member pivots from a first position toward a second position, the pivot axis moves forward and the pivot member and the movable member are accordingly displaced forward.