Surge protection element
A technology for surge protection and components, applied in electrical components, spark gap parts, overvoltage arresters using spark gaps, etc., can solve the problems of unstable discharge voltage, rise of discharge voltage, significant sublimation disappearance of discharge auxiliary parts, etc. To achieve the effect of maintaining performance
Inactive Publication Date: 2018-06-08
MITSUBISHI MATERIALS CORP
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Problems solved by technology
[0006] In the conventional structure, due to the heat and expansion energy of the arc discharge generated between the pair of protruding electrode parts, a part of the discharge assisting part sublimates and disappears, and the discharge voltage is unstable (the discharge voltage rises) during repeated discharges. The problem
[0007] In particular, in large current discharge, there is a tendency that the sublimation and disappearance of the discharge auxiliary part are remarkable.
In addition, if the discharge current greatly exceeds the guaranteed range, not only is it required to change the electrode design, but also it is inconvenient to take measures such as enlarging the size or connecting in parallel in order to operate stably.
[0008] In addition, it is conceivable to suppress the disappearance of sublimation of the discharge assisting portion only by thickening the discharge assisting portion. However, during discharge, the discharge assisting portion disappears from the bonding surface with the insulating tube, so a sufficient suppression effect cannot be obtained.
Method used
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[0025] The following side reference figure 1 and figure 2 , while describing the first embodiment of the surge protection device of the present invention. In addition, in the drawings used in the following description, the scales are appropriately changed in order to make each member visible or easily visible in size.
[0026] Such as figure 1 and figure 2 As shown, the surge protection device 1 of this embodiment includes: an insulating tube 2; a pair of sealing electrodes 3, which seal the discharge control gas inside by closing the openings at both ends of the insulating tube 2; and a discharge auxiliary part 4 , formed on the inner peripheral surface of the insulating tube 2 .
[0027] The pair of sealing electrodes 3 has a pair of protruding electrode portions 5 protruding inward and facing each other.
[0028] And, the above-mentioned discharge assisting portion 4 is constituted by lamination of an insulating layer 8 and an ion source layer 9. The insulating layer...
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To provide a surge protection element such that sublimation disappearance of a discharge assisting portion can be suppressed, and durability can be improved. The invention comprises: an insulating tube 2; a pair of sealing electrodes obstructing the openings at both extremities of the insulating tube to seal therein a discharge control gas; and a discharge assisting portion 4 formed on the inner peripheral surface of the insulating tube. The pair of sealing electrodes has a pair of protruding electrode portions protruding in the inner direction and facing one another. The discharge assist portion constitutes: a layer stack comprising an insulating layer 8 formed from an insulating material; and ion source layers 9 respectively above and below the insulating layer, and formed from an ion source material.
Description
technical field [0001] The present invention relates to a surge protection element for protecting various equipment from surges caused by lightning strikes and the like, and preventing accidents in advance. Background technique [0002] The parts connected to communication lines by electronic equipment such as telephones, fax machines, and modems, power lines, antennas, or image display drive circuits such as CRTs, LCD TVs, and plasma TVs are vulnerable to abnormalities such as lightning surges or static electricity. A surge protection element is connected to the part of the electric shock caused by the voltage (surge voltage) in order to prevent damage to the electronic device or the printed circuit board on which the device is mounted due to thermal damage or fire due to abnormal voltage. [0003] Conventionally, for example, as shown in Patent Document 1, an arrester type surge protection element is described, which includes a pair of protruding electrode portions protrud...
Claims
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IPC IPC(8): H01T4/12H01T1/20H01T2/02
CPCH01T1/20H01T2/02H01T4/12H01T1/22H05F3/04
Inventor 黛良享酒井信智杉本良市
Owner MITSUBISHI MATERIALS CORP