Electric appliance protector provided with positive temperature coefficient thermistor

A positive temperature coefficient, thermistor technology, applied in the direction of resistors with positive temperature coefficients, resistor terminals/electrodes, etc., can solve the problems of fragments scattered, damage to devices, etc., and achieve the effect of preventing current from flowing

Active Publication Date: 2011-06-22
CHANGSHU TIANYN ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, when the positive temperature coefficient thermistor produces transverse fragmentation, it cannot play its due role in causing the fragments to scatter, and the trapped fragments are still in the state of current conduction, resulting in the existence of damage. device concerns

Method used

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  • Electric appliance protector provided with positive temperature coefficient thermistor
  • Electric appliance protector provided with positive temperature coefficient thermistor
  • Electric appliance protector provided with positive temperature coefficient thermistor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] See figure 1 , the electrical protection device provided with the positive temperature coefficient thermistor device includes: a positive temperature coefficient thermistor 1, the shape of the positive temperature coefficient thermistor 1 is just like the shape of a button described in daily life, Disc body trend. The industry usually refers to positive temperature coefficient thermistor 1 as PTC thermistor (PTC's English name is: Positive Temperature Coefficient), and its main material is ceramic barium titanate (BaTiO 3 ), the main feature is that in the operating temperature range, its resistivity increases with the increase of temperature, and it changes nonlinearly, which is called nonlinear PTC effect in the industry. Depend on figure 1 As shown, one side of the positive temperature coefficient thermistor 1 is formed as a first electrode surface 11 , while the other side is formed as a second electrode surface 12 . at present figure 1 The shown posit...

Embodiment 2

[0032] Not shown in the figure, the criss-cross relationship between the aforementioned first and second elastic sheets 21, 31 can be reversed. More specifically, a pair of first elastic sheets 21 are arranged laterally relative to the first electrode surface 11, However, a pair of second elastic sheets 31 are arranged longitudinally relative to the second electrode surface 12, so that the first and second elastic sheets 21, 31 also form a cross relationship, and can embody the technical effect described in embodiment 1.

Embodiment 3

[0034] Not shown, the distance between a pair of first elastic sheets 21 is preferably equal to the distance between a pair of second elastic sheets 31, but if someone deliberately designs the distance between a pair of first elastic sheets 21 to be greater than or less than one As for the distance between the second elastic pieces 31, it should be regarded as a change in form rather than in substance, and thus still belongs to the protection scope of the solution of the present invention and is limited. In addition, if the pair of first elastic pieces 21 and the pair of second elastic pieces 31 are changed from the eight-shaped shape in the first embodiment to the V-shaped shape, it also belongs to the protection scope of the solution of the present invention.

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PUM

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Abstract

The invention discloses an electric appliance protector provided with a positive temperature coefficient thermistor, belonging to the technical field of electronic product protectors. The electric appliance protector comprises a positive temperature coefficient thermistor, a first pin and a second pin, wherein the positive temperature coefficient thermistor is provided with a first electrode surface and a second electrode surface; the first pin is provided with a pair of first elastic strips, corresponds to the first electrode surface and is in contact with the first electrode surface through the first elastic strips; and the second pin is provided with a pair of second elastic strips, corresponds to the second electrode surface, and is in contact with the second electrode surface through the second elastic strips. The electric appliance protector is characterized in that the first elastic strips and the second elastic strips are crossed. The electric appliance protector has the advantages that: when the positive temperature coefficient thermistor cracks in the longitudinal direction, the transverse direction, the longitudinal and transverse direction or in any other direction, the fragments of the positive temperature coefficient thermistor can offset to form a non-conductive open circuit in time so as to effectively prevent current from passing through and achieve a remarkable active effect on electric protection.

Description

technical field [0001] The invention belongs to the technical field of electronic and electric appliance protection devices, and in particular relates to an electric appliance protection device with a positive temperature coefficient thermistor device. Background technique [0002] Current-limiting circuits are usually designed in electrical circuits such as motor starting control circuits of refrigerators, electronic degaussing circuits of televisions, and monitor kinescopes, and positive temperature coefficient thermistor devices are commonly used in current-limiting circuits. Taking the protection device of the refrigeration compressor motor widely used in refrigerators as an example, the electrical protection device, which is commonly called a starter, is connected to the primary and secondary winding coil circuits of the AC motor, more precisely, it is connected to the refrigeration compressor. Between the thermostat and the incoming line of the motor, it plays the role...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02H01C1/14
Inventor 赵云文
Owner CHANGSHU TIANYN ELECTROMECHANICAL
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