CN108399991A - A kind of Thermal protection type varistor - Google Patents
A kind of Thermal protection type varistor Download PDFInfo
- Publication number
- CN108399991A CN108399991A CN201810436756.9A CN201810436756A CN108399991A CN 108399991 A CN108399991 A CN 108399991A CN 201810436756 A CN201810436756 A CN 201810436756A CN 108399991 A CN108399991 A CN 108399991A
- Authority
- CN
- China
- Prior art keywords
- shell
- varistor
- thermal cutoffs
- thermal
- temperature fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/024—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/102—Varistor boundary, e.g. surface layers
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuses (AREA)
Abstract
The invention discloses a kind of Thermal protection type varistors, including：Shell, varistor, first Thermal Cutoffs, insulating trip, the shell is ceramic shell, outer casing underpart is opening, the varistor setting is inside the housing, the first Thermal Cutoffs setting is inside the housing, and first Thermal Cutoffs abut varistor, first Thermal Cutoffs is connected the circuit that need to protect of access with varistor, the insulating trip is fixed in the opening of shell by insulating cement by body seal, the enclosure is provided with second temperature fuse, the second temperature fuse abuts varistor, second temperature fuse accesses in extraneous indicating circuit, it is low that the second temperature fuse than the first Thermal Cutoffs melts disconnected temperature, it is provided with aperture on the shell, for internal pressure of releasing, the enclosure is filled with filler material.The present invention has many advantages, such as that simple in structure, safe and practical, using effect is good.
Description
Technical field
The present invention relates to circuit protection device technical field, specially a kind of Thermal protection type varistor.
Background technology
Varistor is a kind of votage limit type protection device.Using the nonlinear characteristic of varistor, when overvoltage appears in
Two interpolars of varistor, varistor can be by voltage clampings to a relatively-stationary voltage value, to realize to rear class
The protection of circuit.
Invention content
The purpose of the present invention is to provide a kind of Thermal protection type varistors, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the present invention provides the following technical solutions：A kind of Thermal protection type varistor, including：Shell,
Varistor, the first Thermal Cutoffs, insulating trip, the shell are ceramic shell, and outer casing underpart is opening, and described is pressure-sensitive
Resistance is arranged inside the housing, and first Thermal Cutoffs is arranged inside the housing, and the first Thermal Cutoffs is against pressure
Quick resistance, the first Thermal Cutoffs are connected the circuit that need to protect of access with varistor, and the insulating trip is solid by insulating cement
It is connected on body seal in the opening of shell.
Further, the enclosure is provided with second temperature fuse, and the second temperature fuse abuts
Varistor, second temperature fuse access in extraneous indicating circuit.
Further, it is low than the first Thermal Cutoffs to melt disconnected temperature for the second temperature fuse.
Further, it is provided with aperture on the shell, for internal pressure of releasing.
Further, the enclosure is filled with filler material.
Compared with prior art, the beneficial effects of the invention are as follows：It would generally generate heat when pressure responsive resistor failure and even burn, the
One Thermal Cutoffs abut varistor, varistor temperature rise to a certain extent when melt it is disconnected, to avoid fever cause
Product failure and fire incident.This device uses ceramic shell, and ceramics have good insulation and flame retardant property, in varistor
Fire, electric leakage, short circuit and electric shock accidents can be effectively prevent to occur when failure.Second temperature fuse selects the first Temperature protection of ratio
Silk melts the low Thermal Cutoffs of disconnected temperature, it is ensured that melts in advance before the first Thermal Cutoffs melts and breaks disconnected.Second temperature fuse melts
It is disconnected to indicate pressure responsive resistor failure, it needs to replace immediately.When this device inside does not add filler material, it is provided with aperture on shell, is used for
It releases internal pressure.
The present invention has many advantages, such as that simple in structure, safe and practical, using effect is good.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the side structure schematic view of the present invention；
Fig. 3 is the principle of the present invention figure.
In figure：1- shells；2- varistors；The first Thermal Cutoffs of 3-；4- second temperature fuses；5- insulating trips；6-
Through-hole.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of Thermal protection type varistors, including：Shell 1, varistor 2,
One Thermal Cutoffs 3, second temperature fuse 4, insulating trip 5, the shell 1 are ceramic shell, and 1 lower part of shell is opening,
The varistor 2 is arranged inside shell 1, and first Thermal Cutoffs 3 is arranged inside shell 1, and the first temperature
It spends fuse 3 and abuts varistor 2, the first Thermal Cutoffs 3 is connected with varistor 2 accesses the circuit that need to protect, described
Insulating trip 5 is fixed in the opening of shell 1 by insulating cement and seals shell 1.
Further, the shell 1 is internally provided with second temperature fuse 4, and the second temperature fuse 4 is tight
By varistor 2, second temperature fuse 4 accesses in extraneous indicating circuit.
Further, it is low to melt disconnected temperature for 4 to the first Thermal Cutoffs 3 of second temperature insurance.
Further, it is provided with through-hole 6 on the shell 1, for internal pressure of releasing.
Further, 1 inside of shell is filled with filler material.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of Thermal protection type varistor, including：Shell（1）, varistor（2）, the first Thermal Cutoffs（3）, insulating trip
（5）, it is characterised in that：The shell（1）For ceramic shell, shell（1）Lower part is opening, the varistor（2）If
It sets in shell（1）Inside, first Thermal Cutoffs（3）It is arranged in shell（1）Inside, and the first Thermal Cutoffs（3）
Against varistor（2）, the first Thermal Cutoffs（3）With varistor（2）The circuit that series connection access need to be protected, the insulation
Piece（5）It is fixed in shell by insulating cement（1）Opening on by shell（1）Sealing.
2. a kind of Thermal protection type varistor according to claim 1, it is characterised in that：The shell（1）Inside is set
It is equipped with second temperature fuse（4）, the second temperature fuse（4）Against varistor（2）, second temperature fuse
（4）Access is in extraneous indicating circuit.
3. a kind of Thermal protection type varistor according to claim 2, it is characterised in that：The second temperature insurance
（4）Than the first Thermal Cutoffs（3）It is low to melt disconnected temperature.
4. a kind of Thermal protection type varistor according to any one of claim 1-3, it is characterised in that：Described is outer
Shell（1）On be provided with through-hole（6）, for internal pressure of releasing.
5. a kind of Thermal protection type varistor according to any one of claim 1-3, it is characterised in that：Described is outer
Shell（1）Inside is filled with filler material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436756.9A CN108399991A (en) | 2018-05-09 | 2018-05-09 | A kind of Thermal protection type varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436756.9A CN108399991A (en) | 2018-05-09 | 2018-05-09 | A kind of Thermal protection type varistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108399991A true CN108399991A (en) | 2018-08-14 |
Family
ID=63101844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810436756.9A Pending CN108399991A (en) | 2018-05-09 | 2018-05-09 | A kind of Thermal protection type varistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108399991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111681844A (en) * | 2019-12-16 | 2020-09-18 | 南京先正电子股份有限公司 | Voltage-sensitive resistor with double-temperature insurance for communication base station and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953109A (en) * | 2005-10-21 | 2007-04-25 | 徐忠厚 | Varistor with alloy-type temperature fuse |
| CN201838413U (en) * | 2010-10-27 | 2011-05-18 | 兴勤（常州）电子有限公司 | Temperature protection type varistor with remote-control interface |
| CN105190790A (en) * | 2013-03-19 | 2015-12-23 | 松下知识产权经营株式会社 | Varistor fitted with degradation alarm |
| CN205751735U (en) * | 2016-06-27 | 2016-11-30 | 漳州雅宝电子有限公司 | A kind of varistor of organic alloy type double protection |
| CN205751736U (en) * | 2016-06-27 | 2016-11-30 | 漳州雅宝电子有限公司 | A kind of varistor with Double-side hot protection |
| CN208538582U (en) * | 2018-05-09 | 2019-02-22 | 惠州市三特电器有限公司 | A kind of Thermal protection type varistor |
-
2018
- 2018-05-09 CN CN201810436756.9A patent/CN108399991A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953109A (en) * | 2005-10-21 | 2007-04-25 | 徐忠厚 | Varistor with alloy-type temperature fuse |
| CN201838413U (en) * | 2010-10-27 | 2011-05-18 | 兴勤（常州）电子有限公司 | Temperature protection type varistor with remote-control interface |
| CN105190790A (en) * | 2013-03-19 | 2015-12-23 | 松下知识产权经营株式会社 | Varistor fitted with degradation alarm |
| CN205751735U (en) * | 2016-06-27 | 2016-11-30 | 漳州雅宝电子有限公司 | A kind of varistor of organic alloy type double protection |
| CN205751736U (en) * | 2016-06-27 | 2016-11-30 | 漳州雅宝电子有限公司 | A kind of varistor with Double-side hot protection |
| CN208538582U (en) * | 2018-05-09 | 2019-02-22 | 惠州市三特电器有限公司 | A kind of Thermal protection type varistor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111681844A (en) * | 2019-12-16 | 2020-09-18 | 南京先正电子股份有限公司 | Voltage-sensitive resistor with double-temperature insurance for communication base station and preparation method thereof |
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