Multi-Directional Switch Structure for Shorter Lateral Stroke
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Solution Overview
Problem
Existing multidirectional operation switches face difficulties in converting lateral operation forces into pressing forces for the circularly dome-shaped movable contact, leading to increased operational strokes and reduced operability when the operator is lengthened axially.
Innovation Solution
A switching device with a contact structure and operation member comprising a first and second operation shaft, where the first shaft tilts upon force transfer from the second shaft, allowing efficient operation with reduced lateral operational stroke and improved operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator is lengthened in an axial direction to improve lateral press operation, then operability is improved, but the lateral operational stroke increases
Solution Approach 1:
The patent introduces a second operation shaft that operates in a different dimension (lateral direction) compared to the first operation shaft (axial direction). This allows the force application point to be separated from the pressing point, enabling improved operability without increasing the lateral operational stroke of the contact structure.
Solution Approach 2:
The second operation shaft acts as an intermediary that receives the lateral operation force and transmits it to the first operation shaft. This mediator converts the lateral force into axial pressing force on the contact structure, resolving the contradiction between operability and operational stroke.
2Device complexity
If a single operation shaft is used, then the structure is simple, but lateral operation force cannot be efficiently converted into pressing force
Solution Approach 1:
The operation member is segmented into two separate operation shafts with distinct functions. The first shaft is responsible for axial pressing, while the second shaft handles lateral force application. This segmentation allows each shaft to be optimized for its specific function, improving force conversion efficiency while maintaining reasonable structural complexity.
Solution Approach 2:
By adding the second operation shaft that operates in the lateral dimension, the system gains the ability to efficiently convert lateral forces into pressing forces through the interaction between the two shafts, without significantly complicating the overall structure.
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
The solution enables efficient conversion of lateral forces into pressing forces, maintaining compact dimensions and improving operability by allowing the contact structure to be operated reliably with a reduced lateral operational stroke.
Implementation Method 1
The first operation shaft is configured to tilt, upon occurrence of a condition in which the second operation shaft tilts in accordance with the operation force applied to the second operation shaft, so that the contact structure is operated.
Data Source
AI summary
A switching device includes a switch unit with a contact structure and a first operation shaft. The switching device includes a second flange with a contact portion to be in contact with the first operation shaft, and includes a second operation shaft. The switching device includes a holding member with an engagement portion to be engaged with an upper surface of the second flange. The switching device includes a switch operator in which the holding member is inserted. When a lateral pressing force is applied to the switch operator, a second contact portion between the second flange and the engagement portion serves as a support, and thus the second operation shaft rotates with the support. The first operation shaft rotates in accordance with the rotation of the second operation shaft, so that the contact structure is electrically conductive.