Motor protector
A protector and motor technology, applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of long power-off time, short trip time, only temperature protection, etc., to improve the service life, reduce the cost of use, practical strong effect
Inactive Publication Date: 2012-04-11
扬州五岳电器有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a motor protector, which solves the defect that the existing motor protector only has temperature protection due to structural factors, and the current protection is not obvious. Therefore, when the motor works abnormally, it is easy to cause the motor coil to be damaged due to the long power-off time. The phenomenon of smoke and plastic melting, the invention not only maintains the temperature protection function of the original product, but also has the current protection function, has the short time to realize the tripping, and is beneficial to improve the service life of the motor
Method used
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[0009] Further illustrate the present invention in conjunction with accompanying drawing and embodiment, as figure 1 As shown, the present invention is composed of base plate a 1, static contact 2, insulating paper 3, iron nail 4, bimetal 5, moving contact 6, shell 7, resistance sheet 8 and base plate b 9. One end of the bimetal sheet 5 is welded with a movable contact 6, and the other end is welded with an iron nail 4, and then formed. In the shell 7, the end of the bimetal sheet 5 with the iron nail 4 is welded, and the resistance sheet 8 is welded between the bottom plate a1 and the bottom plate b9, and the static contact point 2 is welded on the bottom plate b9, and the insulating paper 3 wraps the bottom plate a1 and the bottom plate b9 and encapsulates them in the middle of the shell 7. In the practical application of the present invention, the current flows from the bottom plate a1 through the resistance plate 8 to the bottom plate b9, then from the static contact 2 to ...
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The invention relates to a motor protector, which is suitable for various motors such as a washing machine motor, a stirring machine motor, a dust collector motor, an air compressor motor and the like, and belongs to the technical field of motor protection. The motor protector is mainly characterized in that: a resistor chip is welded between two parts of a base plate which is divided into the two parts, and is connected with double metal sheets to form a series circuit through a static contact and a movable contact; when the current surpasses a set value, the resistor chip instantly gives out super heat; and when the temperature of the double metal sheets reaches a set value, the static contact and the movable contact are separated due to expansion caused by heat and contraction caused by coldness to realize power cut. The motor protector has a temperature protection function and a current protection function and is simple in structure and strong in practicability, and the trip time is between 2 and 10 seconds, so the motor protector is favorable for prolonging the service life of a motor and reducing the using cost of a client.
Description
technical field [0001] The invention relates to a motor protector, which is suitable for various motors, such as washing machine motors, mixer motors, vacuum cleaner motors, air compressor motors, etc., and belongs to the technical field of motor protection. Background technique [0002] The existing motor protector is composed of a metal base plate, a static contact, insulating paper, iron nails, a bimetal, a moving contact and a metal shell. The metal base plate passes through the metal shell. After being nailed, it is formed, and the metal shell is welded with one end of the bimetal sheet with the nail, and the static contact is welded on the bottom plate corresponding to the moving contact, and the bottom plate is wrapped with insulating paper and packaged in the middle of the metal shell. This product only has temperature protection, and the current protection is not obvious. When the customer uses it, if the motor works abnormally, the power-off time of the protector ...
Claims
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IPC IPC(8): H02H7/08
Inventor 蔡从胜伍为国
Owner 扬州五岳电器有限公司