Waterproof microswitch principle
External mechanical force through the transmission element (pin, button, lever, roller, etc.) will be applied to the action of the reed, when the action of the reed displacement to the critical point of the instantaneous action, so that the action of the reed end of the movable contact and the fixed contact quickly connected or disconnected.
When the force on the actuator element is removed, the action reed generates a reverse action force, and when the reverse travel of the actuator element reaches the action threshold of the reed, the reverse action is completed instantaneously. The contact pitch of the micro switch is small, the action stroke is short, the pressing force is small, and the on-off is rapid. The action speed of its movable contact has nothing to do with the action speed of the transmission element.
Waterproof microswitch wiring method
When it comes to the microswitch wiring method, in fact, it is very simple, the general microswitch has three points, these three points a public **** point, one is the normal open point, the other is the closure point, the public **** point is just like a socket in the zero line, the normal open point is to open the switch, making the current flow through the point, the closure point is, of course, is the point, the current flow through the switch. The normally open point is the point that opens the switch and makes the current flow through, and the closed point is of course the contact point that breaks the current through. Put the corresponding point into the corresponding position, you can. Although the method of wiring the microswitch seems to be very simple, but it is also necessary to do the relevant preparatory measures beforehand.
Waterproof microswitch use
Microswitch size is small, but the role is very large, in our life everywhere can see. For example, computer mouse, car mouse, automotive electronics, communications equipment, military products, test instruments, gas water heaters, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, float equipment supporting, medical equipment, building automation, power tools and general electrical and radio equipment, 24-hour timer and so on
Waterproof microswitch type There are many types of microswitches, the internal structure of hundreds of kinds, according to the volume of ordinary, small, ultra-small; according to the protection performance, waterproof, dustproof, explosion-proof; according to the form of breakage, there are a single-type, double-type, multi-connected type. At present, there is a strong disconnect micro switch (when the switch reed does not work, external forces can also make the switch disconnect); according to the breaking capacity, there are ordinary, DC type, micro-current type, high-current type. According to the use of environmental points, there are ordinary, high-temperature resistant type (250 ℃), ultra-high-temperature resistant ceramic type (400 ℃). Microswitches are generally without auxiliary press attachments as the basic type, and derived from the small stroke type, large stroke type. According to the need to join different auxiliary pressing accessories, according to join different pressing accessories switch can be divided into button type, reed roller type, lever roller type, short moving arm type, long moving arm type and other forms. Important parameters of waterproof microswitch 1, Leakage Resistance Index It is the maximum withstand voltage value of inserting 2 electrodes into the test article to drop 50 drops of the specified solution (ammonium chloride 0.1 [%]) to the electrodes without short-circuiting, and there are the following 5 grades.The CTI value of the UL Yellow Book and PTI are shown in the following table. The relationship between CTI value and PTI of UL Yellow Book is shown in the table below. 2. Number of operations Indicates the number of switching times for the endurance test specified in the specifications. Each manufacturer selects the number of times from the table below and indicates it with a symbol on the switch. In the IEC specification the switch for high frequency operation is standardized at 50,000 times, and the switch for low frequency operation is standardized at 10,000 times. 3. Operating ambient temperature The temperature range in which the switch can be used. Please refer to the following table for the meaning of the symbols. Indicates the symbol T8525T85 Temperature 0 ~ +85 ℃ -25 ~ +85 ℃ Micro-switch role is really a lot, you guys found that those places need to use waterproof micro-switch? About waterproof microswitch principle and installation is introduced to you here, I hope to help you.