Multidirectional Input Device Single Knob Merging Sliding and Rotation
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Solution Overview
Problem
Conventional multidirectional input devices require separate knobs for sliding and rotational operations, leading to increased complexity, size, and cost.
Innovation Solution
A multidirectional input device utilizing a single knob for both sliding and rotational operations, with a first slider and second slider mechanism that engage differently based on direction, allowing for integrated switching contact activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate knobs are provided for sliding and rotational operations, then operational functionality is ensured, but device complexity increases
Solution Approach 1:
The patent combines two separate operation knobs (one for sliding operation and one for rotational operation) into a single integrated knob. This single knob can perform both sliding movements in perpendicular directions and rotational movements, thereby reducing device complexity while maintaining full operational functionality for controlling vehicle seat adjustments.
Solution Approach 2:
The single operation knob is designed to perform multiple functions: it can slide in the front-rear direction, slide in the left-right direction, and rotate about a vertical axis. This multi-functional design eliminates the need for separate dedicated knobs for each operation type, resolving the contradiction between versatility and complexity.
2Adaptability or versatility
If separate knobs are provided for sliding and rotational operations, then operational functionality is ensured, but device size increases
Solution Approach 1:
By merging multiple operation knobs into one integrated knob structure, the patent significantly reduces the space required for the control device. The single knob occupies less area than multiple separate knobs would require, while still providing all necessary operational capabilities for seat adjustment control.
3Adaptability or versatility
If separate knobs are provided for sliding and rotational operations, then operational functionality is ensured, but manufacturing cost increases
Solution Approach 1:
The patent integrates multiple operation functions into a single knob assembly, which reduces the number of parts that need to be manufactured, assembled, and quality-checked. This consolidation simplifies the manufacturing process and reduces production costs while maintaining full operational capability.
Solution Approach 2:
The multi-functional single knob design allows for a more efficient use of materials and manufacturing resources compared to producing multiple separate single-function knobs. The integrated design enables economies of scale and reduces overall manufacturing complexity and cost.
Data Source
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AI summary
A multidirectional input device (1) according to an embodiment of the present invention includes a knob (10) that receives sliding operation and rotational operation in an X direction and a Y direction, a first slider (16) that operates integrally with the knob (10), a first switch mechanism (30) having a plurality of contacts (281) that are each turned on or off in response to the displacement of the first slider (16) in the X direction and the Y direction, a second slider (14) that operates by engaging with the first slider (16) rotating and moving in the Y direction, but does not engage with the first slider (16) moving in the X direction, and a second switch mechanism (32) having at least one contact (281) that is turned on or off in response to the displacement of the second slider (14) operating by engaging with the first slider (16) rotating, and keeps being turned on or off despite the displacement of the second slider (14) operating by engaging with the first slider (16) moving in the Y direction.