A Portable Overheating Protection Varistor
A technology of piezoresistors and piezoresistors, applied in piezoresistors, resistors, resistor parts, etc., can solve problems such as difficult and rapid replacement, and achieve the advantages of avoiding long-term overheating and fire, rapid replacement, and convenient processing Effect
Active Publication Date: 2018-10-16
GUANGXI NEW FUTURE INFORMATION IND
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Problems solved by technology
However, these varistors are fixed in the integrated circuit by welding the electrode pins, and it is difficult to replace them quickly once they fail.
Method used
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Embodiment 1
[0012] A portable thermally protected varistor such as figure 1 , figure 2 and image 3 As shown, it includes a piezoresistor substrate 6 and an overheating protection packaging shell arranged outside the piezoresistor substrate 6; the piezoresistor substrate 6 is composed of a piezoresistor ceramic body and an The right end electrode 6A of the piezoresistor base body and the left end electrode 6B of the piezoresistor base body are composed; the overheat protection package shell is composed of a left electrode cap 1 and a right electrode cap 8, an explosion-proof glass shell 5, a connecting wire electrode 2, and an insulating pad Sheet 3, left spring 4 and right spring 7 form. The inner diameter of the explosion-proof glass case 5 matches the outer diameter of the piezoresistor matrix 6, and the piezoresistor matrix 6 can move back and forth along the axis of the explosion-proof glass case 5 in the explosion-proof glass case 5; the left electrode cap 1 and The right electr...
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The invention discloses a portable overheat protection type varistor, which comprises a varistor base and an overheat protection package shell. The varistor base is composed of a varistor ceramic body and terminal electrodes arranged at both ends of the varistor; the overheat protection package shell is composed of two electrode caps, an explosion-proof glass shell, a connecting wire electrode, an insulating gasket, and two helical springs. ; One end of the connecting wire electrode is closely connected with the inner bottom of one of the electrode caps by high temperature solder, and the other end is tightly connected with the terminal electrode of the varistor base body through low temperature solder, and one end face of the varistor base body, a spring, an insulating gasket, The electrode caps are connected as one. The two electrode caps are respectively tightly connected with the two ends of the explosion-proof glass shell through the screw teeth, and the other end face of the varistor base body is electrically connected with the other electrode cap through another spring. The invention can effectively avoid the long-term overheating and fire phenomenon of the product caused by the failure of the varistor.
Description
technical field [0001] The invention relates to an electronic component, in particular to a portable overheating protection piezoresistor, which belongs to the field of piezoresistor manufacturing technology. Background technique [0002] With the continuous development of electronic information technology, varistors, as a transient overvoltage protection device, are widely used in lightning overvoltage protection of low-voltage power supply systems. However, fires and combustion caused by short-circuit failures of varistors also occur from time to time. In order to avoid the occurrence of fire, the common practice in the industry is to realize the safety and reliability of varistors from the following two paths. One is to improve the technological level of the varistor manufacturing method and its own performance indicators to achieve the stability and long-term reliability of the varistor components. For example, the patent application number is 200910049087.0, the high-en...
Claims
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IPC IPC(8): H01C1/024H01C7/10
Inventor 孟凡志苏永频栗满谦
Owner GUANGXI NEW FUTURE INFORMATION IND