Automotive switches generally have a core component called automotive micro switches, which are well integrated, easy to install, and miniaturized, and can be widely used in automotive switches. The micro switch is a kind of contact with a small spacing, which adopts a snap-action mechanism and operates with a specified stroke and a specified force. It's covered with a casing with a drive rod on the outside. Because of its small contact spacing, it is named micro switch, also known as sensitive switch.
The key points to extract are: small contact spacing, fast action, and shell covering. In addition, automotive micro switches have long life and high reliability. It can be seen from the seat switch that the circuit is relatively simple and should be directly connected to the seat motor. The switch adopts three micro switches, and the power supply is directly turned on or off by the micro switches. '
The automotive micro switch mainly includes a driving rod, movable parts and static contacts.
Drive rod: As a part of the switch, the external force is transmitted to the internal shrapnel structure to push the moving contact to switch.
Movable part: refers to the mechanism part of the switch contact, sometimes also called the moving spring. The moving piece contains moving contacts. The contacts of high-current switches are generally silver alloys. Silver tin oxide contacts are commonly used, which are resistant to electrical wear, welding, good conductivity, and small and stable contact resistance.
Contact spacing: It is the interval between the static contact and the moving contact, and it is also the effective distance of the switch.
Similarly, each function of the glass lift switch corresponds to a micro switch, and the principle is the same, including movable parts, contact gaps, etc.
To sum up, the automotive micro switch is an external force that acts on the movable parts through the driving parts. When the movable part moves to the critical point, an instantaneous action is generated, so that the moving contact and the static contact at the end of the movable part are quickly connected or disconnected. When the force on the driving part is removed, the movable part produces a reverse force, and when the reverse stroke of the driving supplementary part reaches the critical point of the movable part, the reverse action is completed instantaneously.
Automobile micro switch is a small object widely used in social life to turn on or cut off the circuit. Many micro switches designed now also have the function of preventing electrical fires. With the development of technology, a kind of micro switch will be used in automobile parts, which we call micro switch.
It is well known that switches are used frequently. If the manufacturing process and materials of components are unqualified, the service life will be greatly reduced, and even the electrical appliances/equipment used will be seriously damaged. Especially in the application of electronic equipment, instrumentation, power system, aerospace and other fields. These micro switches require frequent circuit changes to perform automatic control and protection. Car micro switches are small, but they also play a very important role. If there are defects in the process or technology, the switch will have weak recovery force and cannot meet the needs of use, thereby reducing its service life. Of course, in practical applications now, because of the research and development of new technologies, the automotive micro switches used are highly resilient and have a long life.
In fact, a car micro switch generally needs a base, a switch cover of the base and an inherent plug-in. There are buttons in the space enclosed by the switch cover and the base, which is the core of the switch. We don't need to make the switch ourselves, but we must understand that the finer the button and the better the material, the better the use effect of the switch and the longer the service life.
With the continuous upgrading of cars, the micro switch of the car, as an important part that affects the start and stop of the car, is also constantly upgrading its technology for better application.
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Post time: Nov-16-2022