Rotational Link Mechanism for Input Apparatus Space Utilization
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Solution Overview
Problem
Existing input apparatus designs require a rotatable member between a circuit board and an operating member, which obstructs the effective use of space between them, limiting the operational efficiency and space utilization.
Innovation Solution
An input apparatus with a vertically movable operating member, a circuit board, and a link mechanism featuring rotational members that push a push switch upward upon rotation, allowing for efficient space utilization and consistent operation feel regardless of push location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotatable member is placed between the circuit board and operating member, then the push switch can be operated with consistent operation load, but the space between the circuit board and operating member cannot be effectively used
Solution Approach 1:
The patent moves the rotatable member from the vertical space between the circuit board and operating member to the horizontal dimension by positioning it on the lower surface of the circuit board. This dimensional relocation resolves the space utilization issue while preserving the operational consistency function through the link mechanism's geometric design.
Solution Approach 2:
The rotatable member is nested on the lower surface of the circuit board, utilizing the available space underneath rather than occupying the vertical interval. This nesting approach allows the mechanism to be compact while maintaining full functionality, effectively resolving the contradiction between operational consistency and space utilization.
2Force
If the rotatable member is positioned between the circuit board and operating member, then force transmission can be achieved, but it obstructs effective space use and increases device complexity
Solution Approach 1:
The rotatable member is extracted from the congested vertical space between the circuit board and operating member and relocated to the lower surface of the circuit board. This extraction simplifies the overall mechanism arrangement by separating the force transmission function from the vertical stack, reducing device complexity while maintaining effective force transmission through the link mechanism.
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
Enables effective use of space between the circuit board and operating member, providing a consistent click operation feel and direct force transmission to the push switch, reducing operational load and enhancing user experience.
Implementation Method 1
a rotation center shaft is rotatably held by the base member, the rotational member pushing the push switch upward by rotating in response to a push-down operation of the operating member
Data Source
AI summary
An input apparatus includes a base member, an operating member provided so as to be vertically movable with respect to the base member, the operating member being to be pushed down, a circuit board fixed to the base member and provided under the operating member, a push switch provided on a lower surface of the circuit board, and a link mechanism including a rotational member disposed under the circuit board such that a rotation center shaft is rotatably held by the base member, the rotational member pushing the push switch upward by rotating in response to a push-down operation of the operating member.