vol.295 August 2025
"Instantaneous switching" and "sliding" mechanisms meet
your needs
In order to meet the diverse needs of our customers, it is necessary to consider the characteristics of the basic mechanism when considering its implementation.
OMRON’s detection switches have two main types of basic mechanisms, each of which has a wide lineup of series.
This allows you to select the product that best suits your needs.
At first glance, these two detection switches appear to be the same.
However, their internal structures and characteristics are completely different.
Snap-action type with instantaneous contact switching
This type uses the spring reaction force and has a mechanism that instantly switches the contact point when the movable part is pushed into a certain position.
Before operation
The reaction force of the movable spring is applied upward.
After operation
When the push button is pressed, the movable part bends, and when it reaches a certain position, the reaction force of the movable spring instantly switches downward.
Characteristics
- Reliable operation at a fixed stroke position
- Less contact wear due to short arcing time
- Clearly perceptible sound and feel during operation
Application example
- Mouse
Examples of detection switches with
a snap-action mechanism
Sliding contact type with sliding contacts
This type has a mechanism in which the movable contact slides to make contact with the fixed contact.
Before operation
The moving contact is placed on an insulator
After operation
The movable contact moves downward and touches the fixed contact to make a connection.
Characteristics
- Few mechanical design constraints due to long stroke
- Stable contact and microcurrent switching achieved by wiping action
- Quiet operation
Application examples (where small size and environmental resistance are required)
- AMR
- Door lock
- Door mirror folding/
unfolding
Examples of detection switches with a sliding contact mechanism
* Contents as of July 2025.
In the interest of product improvement, specifications are subject to change without notice
