Change-over Switch with Integrated Swing and Contact Member
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Solution Overview
Problem
Existing trigger switches with change-over switches are complex and require a large number of components to change operation direction based on the tilting direction of a lever, leading to increased costs and complexity.
Innovation Solution
A change-over switch design featuring a swing member, a contact member with movable contacts, and a substrate with fixed contacts, where the contact member swings to change over contacts depending on the swing direction, simplifying the configuration and reducing component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the trigger switch is configured to change operation direction depending on tilting direction, then the functionality is improved, but the number of components increases and structure becomes complicated
Solution Approach 1:
The patent combines the swing member and contact member into a single integrated component that performs both swinging motion and electrical contact functions. This merging eliminates the need for separate components to achieve direction-dependent operation switching, thereby maintaining functionality while reducing structural complexity
Solution Approach 2:
The swing member is designed to serve multiple functions: it acts as both the operating lever that detects tilting direction and the contact member that switches electrical circuits. This multi-functionality allows the structure to achieve direction-dependent operation switching without requiring additional specialized components
2Adaptability or versatility
If the trigger switch is configured to change operation direction depending on tilting direction, then the functionality is improved, but the number of components increases
Solution Approach 1:
The patent merges the swing member and contact member into one integrated component, eliminating the need for separate parts. This single component performs both the mechanical swinging motion and the electrical contact switching functions, thereby reducing the total number of components while maintaining the direction-dependent operation switching capability
3Adaptability or versatility
If multiple movable contacts are provided for different tilting directions, then the switching function is improved, but the configuration becomes complicated
Solution Approach 1:
The contact member is segmented into multiple movable contacts that are arranged in different directions, with each contact corresponding to a specific tilting direction. This segmentation allows the single integrated component to achieve directional switching capability while maintaining a relatively simple overall configuration
Solution Approach 2:
Different movable contacts are positioned and oriented with specific local characteristics to detect and respond to tilting in different directions. Each contact has its own optimal orientation and position tailored to its specific directional function, enabling the structure to achieve complex directional switching without overall complexity
Data Source
AI summary
A change-over switch includes a swing member configured to swing in response to an operation from the outside, a contact member configured to swing about the swing axis identical to the axis of the swing member and including a plurality of movable contacts extending in different directions, and a substrate on which a fixed contact is formed, the fixed contact configured to contact the plurality of movable contacts of the contact member. In the change-over switch, the movable contact that contacts the fixed contact formed on the substrate is changed over by swinging of the contact member in conjunction with swinging of the swing member. A switch device includes a power source switch configured to open and close a circuit which supplies electric power to a power load, and a change-over switch configured to change over electric power supplied to the power load.