Variable Operation Sensation Input Device Rattling Suppression
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Solution Overview
Problem
Existing variable operation sensation input devices face issues with rattling due to the size of the support structure needed to prevent rattling, which increases the overall size of the device and costs.
Innovation Solution
A variable operation sensation input device with rotatably supported driving members and a compact design, where the operation member, driving members, and motors are disposed within a narrow area, allowing for a reduction in size and preventing rattling through a simple structure and power transmission mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support structure is enlarged to suppress rattling of driving members, then rattling is suppressed, but the device size increases
Solution Approach 1:
The patent applies the dynamics principle by making the driving members rotatable rather than linearly movable. The first driving member rotates about a first axis, and the second driving member rotates about a second axis, allowing the system to adapt to oblique sliding movements dynamically. This rotational mechanism suppresses rattling while maintaining a compact structure, as the driving members can accommodate multi-directional forces through rotation rather than requiring a rigid, enlarged linear support structure.
Solution Approach 2:
The patent applies the dimensionality change principle by transitioning from linear movement in one dimension to rotational movement in three dimensions. The driving members are configured to rotate about axes that are not necessarily aligned with the sliding direction, allowing them to respond to oblique movements by combining rotational components. This dimensional flexibility enables rattling suppression without increasing the device's footprint.
2Ease of operation
If the driving members are supported to be linearly movable in the movement direction, then the driving members move smoothly, but the support structure increases in size
Solution Approach 1:
The patent applies the dynamics principle by enabling the driving members to rotate rather than move linearly. The first driving member rotates about a first axis when the operation member slides in the first direction, and the second driving member rotates about a second axis when the operation member slides in the second direction. For oblique sliding, both driving members rotate simultaneously, providing smooth and flexible operation without requiring a large linear support structure.
Solution Approach 2:
The patent applies the universality principle by designing the driving members to handle multiple types of movement through rotation. A single rotatable driving member can respond to sliding movements in any direction by adjusting its rotation, eliminating the need for separate linear support structures for different movement directions. This multi-functional approach ensures smooth operation while maintaining compact dimensions.
3Volume of moving object
If the operation member and driving members are disposed within a narrow area, then the device size is reduced, but rattling may occur
Solution Approach 1:
The patent applies the dynamics principle by using rotatable driving members that can dynamically adapt to oblique sliding movements. The first driving member rotates about a first axis, and the second driving member rotates about a second axis, allowing the compact mechanism to suppress rattling through rotational flexibility rather than requiring a large, rigid support structure. This dynamic rotational mechanism effectively eliminates rattling while maintaining a narrow device footprint.
Data Source
AI summary
A variable operation sensation input device includes: an operation member slidable along a plane including first and second directions perpendicular to each other; a first driving member including a first engagement portion driven by sliding movement of the operation member in the first direction; a second driving member including a second engagement portion driven by sliding movement of the operation member in the second direction; a first motor connected to the first driving member via a first power transmission section; a second motor connected to the second driving member via a second power transmission section; a first detection section detecting a movement state of the operation member in the first direction; a second detection section detecting a movement state of the operation member in the second direction; and a control section controlling a driving of the motors on the basis of outputs of the first and second detection sections.