Helmet Pivot Mechanism Eccentric Cam Rotary Translational Movement
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Solution Overview
Problem
Existing helmet movement devices are complex and costly due to numerous mechanisms and components, lacking a simplified structure with a small number of components that can achieve both rotary and translational movements efficiently.
Innovation Solution
A pivot seat with two distinct seat regions, one angularly and linearly offset from the other, allows a pivot element to perform a rotary/translational movement by interacting with an eccentric portion, enabling a direct correlation between angular and linear displacements, thus simplifying the mechanism and reducing component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex mechanisms and numerous components are used to achieve rotary/translational movement of the visor, then the movement function is achieved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the rotary and translational movement functions into a single pivot element with an eccentric portion. The pivot element simultaneously performs rotation about an axis and translation along the rotation axis through the interaction between the eccentric portion and the two seat regions, eliminating the need for separate mechanisms for each movement type.
Solution Approach 2:
The pivot element serves multiple functions: it acts as a rotation axis, a translation guide, and a movement actuator all in one component. The eccentric portion of the pivot element interacts with the two seat regions to produce both rotary and translational movements, making the single component multi-functional.
2Ease of operation
If multiple mechanisms and components are used for visor movement, then the movement is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple movement functions into a single pivot element design. The base body with two seat regions and the pivot element with eccentric portion work together as an integrated mechanism, reducing the total number of parts that need to be manufactured, assembled, and quality-checked.
Solution Approach 2:
The pivot element is designed to perform multiple functions simultaneously - rotation, translation, and actuation - which reduces the overall component count and simplifies the manufacturing process compared to using separate dedicated components for each function.
3Device complexity
If a simplified structure with fewer components is used, then manufacturing cost and complexity are reduced, but the ability to achieve both rotary and translational movements may be compromised
Solution Approach 1:
The patent uses parameter changes in the geometric configuration of the pivot element and seat regions to achieve complex movement. The eccentric portion's offset distance, the angular offset between seat regions, and the spatial relationship between the two seat regions are specifically designed to transform simple rotation into combined rotary-translational movement.
Solution Approach 2:
The pivot element features an asymmetric eccentric portion that is offset from the rotation axis. This asymmetry, combined with the angularly offset seat regions, enables the conversion of pure rotation into rotary-translational movement, achieving complex functionality with a simple asymmetric geometry rather than complex symmetric mechanisms.
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
This solution enables a helmet movement device with a simplified structure that achieves efficient rotary/translational movements with fewer components, reducing manufacturing costs and complexity while ensuring smooth operation of visors or flaps between open and closed positions.
Implementation Method 1
a pivot element (24) movable with respect to said base body (20), said pivot element (24) including an eccentric portion (26)
Data Source
AI summary
The present disclosure relates to a movement device (10) for a helmet (12) for moving a first element (16) of the helmet (12) with respect to a second element (14) of the helmet (12). The movement device (10) includes a pivot element (24) for pivoting the first element (16) of the helmet with respect to the second element (14) of the helmet about an axis of rotation (X), and a pivot seat (25), in which the pivot element (24) is arranged. The pivot element (24) includes an eccentric portion or cam (26), and said seat includes a first seat region (30) adapted to receive said eccentric portion (26) and a second seat region (32) adapted to receive said eccentric portion (26). The first seat region (30) is in a position angularly offset and linearly translated with respect to said second seat region (32). A first position of the pivot element (24) corresponds to said first seat region (30) and a second position of the pivot element (24) corresponds to a second seat region (32), such that, when the eccentric portion (26) of the pivot element (24) passes from the first seat region (30) to the second seat region (32), the pivot element (24) performs both a rotation in order to compensate for angular offsetting between the second seat region (32) and the first seat region (30) and a translation to compensate for linear offsetting between the second seat region (32) and the first seat region (30).