Single Shaft Lever Device for Multi-Directional Pivot
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Solution Overview
Problem
Existing lever devices require multiple pivot shafts and complex coupling mechanisms to operate in multiple directions, increasing the number of components and assembly complexity.
Innovation Solution
A lever device design that uses a single shaft with a lever support and contact portions to enable movement in multiple intersecting directions, reducing the number of components by integrating a spherical curved surface and tapered insertion bore for easy assembly and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pivot shafts are used to enable lever movement in multiple directions, then the lever can operate in intersecting directions, but the number of components and assembly complexity increases
Solution Approach 1:
The patent combines multiple pivot shafts into a single integrated pivot shaft that supports the lever for movement in multiple intersecting directions. The housing includes multiple pivot shaft support portions that cooperate with one pivot shaft, eliminating the need for separate pivot shafts for different movement directions. This merging reduces the number of components while maintaining the lever's ability to move in multiple directions.
Solution Approach 2:
The single pivot shaft is designed to serve multiple functions simultaneously - it supports the lever for pivoting in the first direction, second direction, and potentially other intersecting directions. The housing's multiple pivot shaft support portions are configured to work together with this universal pivot shaft, allowing one component to perform the work of what would traditionally require multiple specialized components.
2Adaptability or versatility
If multiple pivot shafts and coupling mechanisms are used, then the lever can be supported for multi-directional movement, but the assembly task becomes more complex
Solution Approach 1:
The patent merges multiple coupling mechanisms into a single integrated housing structure with multiple pivot shaft support portions. These support portions are configured to cooperate with a single pivot shaft, eliminating the need for separate coupling operations for multiple shafts. This reduces the assembly task to installing one pivot shaft into the housing rather than coupling multiple shafts to the lever and housing.
Solution Approach 2:
The housing is pre-configured with multiple pivot shaft support portions that are positioned and oriented correctly during manufacturing. This preliminary arrangement of support portions ensures that when the single pivot shaft is installed, it automatically aligns with all necessary movement directions, eliminating the need for complex field assembly and adjustment of multiple shafts.
Data Source
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AI summary
A lever device (1) includes a single shaft (4) for mounting a lever section (3) to a housing (2). The lever section (3) includes a shaft mounting section (8) having an insertion hole (11). The lever support section (26) of the shaft (4) is disposed within the insertion hole (11) and supports the lever section (3) so that the lever section (3) can move in the first direction (F1) and the second direction (F2). A contact section (34) is provided either to the housing (2) and/or the lever section (3), or between the housing and the lever section. The contact section (34) includes a curved surface (36) which allows the lever section to move in the first direction and the second direction while the housing and the lever section are in contact with each other.