CN108766844A - A kind of three-phase Thermal protection overvoltage component - Google Patents
A kind of three-phase Thermal protection overvoltage component Download PDFInfo
- Publication number
- CN108766844A CN108766844A CN201810905364.2A CN201810905364A CN108766844A CN 108766844 A CN108766844 A CN 108766844A CN 201810905364 A CN201810905364 A CN 201810905364A CN 108766844 A CN108766844 A CN 108766844A
- Authority
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- China
- Prior art keywords
- surge protection
- lead
- component
- protection component
- fixed part
- 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
- 230000001012 protector Effects 0.000 claims abstract description 38
- 229910000679 solder Inorganic materials 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 29
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000013021 overheating Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 208000021760 high fever Diseases 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WABPQHHGFIMREM-RNFDNDRNSA-N lead-211 Chemical compound [211Pb] WABPQHHGFIMREM-RNFDNDRNSA-N 0.000 description 3
- WABPQHHGFIMREM-BKFZFHPZSA-N lead-212 Chemical compound [212Pb] WABPQHHGFIMREM-BKFZFHPZSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011469 building brick Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/20—Electrothermal mechanisms with fusible mass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
Abstract
A kind of three-phase Thermal protection overvoltage component, it includes：One substrate, one surge protection unit and two overheating protection components, the substrate system is convexly equipped with one of parallel first fixed part and one second fixed part, the first of the surge protection unit, two, three surge protection component systems are horizontal mutually overlapped, and the respectively lead is bent and is fixed on substrate down in a vertical manner, one end system of the two overheat protector components is fixedly arranged on the first fixed part and the second fixed part respectively, and the lead for the scolding tin and the surge protection unit that the other end then utilizes fusing point relatively low links to form first, two solder joints, and through elastic sheet metal because being bent under the collocation with rebound stress, when the overvoltage protective module being enabled to fail and generate high temperature, can scolding tin be melted via lead heat conduction really, reach the purpose of escape disconnection immediately, the safety in utilization of circuit is substantially improved.
Description
Technical field
The present invention relates to electric components technical field, more particularly to a kind of overheat protector mechanism is constituted with varistor
Novel protected component.
Background technology
Conventional circuit design, destruction of the Transient voltage surges of electric power supply system to electronic building brick in order to prevent, usually
Surge protection component can be installed additional in electronic loop, such as metal oxide varistor (Metal Oxide Varistor, MOV)
Deng.When the voltage at surge protection component both ends is higher than its breakdown voltage value, can Low ESR be become from high impedance when absorbing surge,
Disruptive surge energy is set to pass through, to protect backend load not influenced by voltage surge.However surge protection component is in suction
When receiving surge and will produce deterioration in the process, or meeting with duration overvoltage, surge protection component body can generate heat, temperature when serious
But will increase extremely even burn, and then detonator circuit plate, arround electronic building brick damage on fire.
Therefore, in the prior art, all it is the method for the reload temperature fuse by surge protection components to solve
State problem.When surge protection component failures and persistent fever, and it is more than its fusing-off temperature to conduct to the temperature of Thermal Cutoffs
When, Thermal Cutoffs is blown, to cut off the electric current of surge protection component.However, the heat that surge protection component generates is through being situated between
Matter conducts to Thermal Cutoffs and needs the time, along with Thermal Cutoffs thermal balance needs the time so that when overheating protection reacts
Between it is long, electric current can not be cut off before surge protection component burns, and generate dangerous.
Furthermore existing three-phase circuit protection technique generally uses three surge protection components and two Thermal Cutoffs close
The shortcomings that patch uses, this design is equally the heat generated by surge protection component, need to be by surge protection component body, through epoxy
Resin-encapsulate material, then the encapsulating material for adopting heatproof engineering plastics is conducted to Thermal Cutoffs, then it is conducted to Thermal Cutoffs sheet
The low-temperature alloy of body can just fuse, and reach the result of disconnected current protection；On its heat conduction path, the encapsulating of two kinds of components
Material is all that the non-conductor of heat needs to be improved so such protected mode is extremely dangerous.
Invention content
In view of this, the present inventor is in the manufacturing development and design experiences of being engaged in Related product for many years, for above-mentioned mesh
Mark designs and after discretion assessment, obtains the present invention for really having practicability eventually in detail.
The technical problem that the present invention is intended to solve is, for above-mentioned missing of the existing technology, to provide a kind of three-phase heat
The over-pressed component of protection.
Above-mentioned three-phase Thermal protection overvoltage component, it includes：One substrate, a surge protection unit and two overheating protection groups
Part, wherein the substrate system is convexly equipped with one of parallel first fixed part and one second fixed part, and is situated between at the substrate front end
One first engaging portion and one second engaging portion are equipped between first and second fixed part, the surge protection unary system level is overlapped
At least provided with one first surge protection component, one second surge protection component and a third surge protection component, and with this
Three surge protection components are resisted against the two of the substrate fixed part upper ends, and the surge protection unit and the substrate is made to have between one
Gap, but the first surge protection component, the second surge protection component and the third surge protection component all have two leads,
And it is fixedly arranged on first engaging portion and second engaging portion in pairs with wherein four leads, the two overheat protector components,
System is respectively an elastic sheet metal, one end systems of the two overheat protector components be fixedly arranged on respectively first fixed part and this second
Fixed part, and the other end of the two overheat protector components all forms a contact site, wherein the contact site of the overheat protector component
System is bent and is fixedly arranged on inside the two of first engaging portion leads and fixes to form one first solder joint through scolding tin, and another excess temperature is protected
The contact site of protecting assembly is then bent and is fixedly arranged on inside the two of second engaging portion leads and fixes to form one second weldering through scolding tin
Point, enable the two overheat protector components all by bending and with one rebound stress so that the surge protection unit generate high temperature and
It melts first solder joint or second solder joint forms escape and disconnects.
Preferably, outside the first surge protection component, the second surge protection component and the third surge protection component
Layer is all coated with an insulation cortex.
Preferably, the first surge protection component has one first lead and one second lead, second surge protection
There is component a third lead and one the 4th lead, the third surge protection component to draw with one the 5th lead and one the 6th
Line, the first lead of the first surge protection component and the 4th lead system of the second surge protection component with position and bend down
It is fixedly arranged on first engaging portion, the 5th lead of the second lead of the first surge protection component and the third surge protection component
System is with position and bends and is fixedly arranged on second engaging portion down, and the third lead and third surge of the second surge protection component
6th lead of protection component is then bent respectively is fixedly arranged on the substrate down.
It is passed through with first lead and the 4th lead preferably, the contact part of the overheat protector component is bent inside
Scolding tin is fixed to form one first solder joint, the contact site of another overheat protector component then bending and second lead and should inside
6th lead is fixed to form one second solder joint through scolding tin.
The effect of compareing prior art：
(1) the first, second and third surge protection component system of the surge protection unit is horizontal mutually overlapped, and will each lead
It is bent and is fixed on substrate down in a vertical manner, thereby so that substantially reducing the whole height of structure, so that electric appliance is used
The collocation of product is installed, and the third surge protection component 23 is more resisted against the first and second fixed part of substrate and possesses a gap, into
And sufficient space is kept, reach the purpose of elastic sheet metal rebound when scolding tin melts.
(2) the two overheat protector components are elastic copper coin, and wherein four leads in the surge protection unit are respectively welded
Connection is formed, so that the number of leads of substrate connection is significantly simplified, in addition the overheat protector component system connect with two leads respectively
In on same position, and the first solder joint and the second solder joint are only formed, is easily worked and is substantially improved the composition efficiency of structure.
(3) the two overheat protector component systems link shape using the relatively low scolding tin of fusing point and the lead of the surge protection unit
The overvoltage protective module is enabled to fail because being bent under the collocation with rebound stress at the first and second solder joint, and through elastic sheet metal
And when generating high temperature, can scolding tin be melted via lead heat conduction really, reach the purpose of escape disconnection immediately, and respectively the excess temperature is protected
Protecting assembly all has the effect of two surge protection components of cut-out, and the safety in utilization of structure is substantially improved.
Description of the drawings
Fig. 1 is the stereogram for the present invention.
Fig. 2 is the front view for the present invention.
Fig. 3 be for the present invention it is normal do not overheat using engagement state schematic diagram.
Fig. 4 is the schematic equivalent circuit for the present invention.
Fig. 5 is for the improper of the present invention and to overheat the front view used.
Fig. 6 is for the improper of the present invention and to overheat the off-state schematic diagram used.
In figure：
10 substrates
11 first fixed parts
12 second fixed parts
13 first engaging portions
14 second engaging portions
20 surge protection units
21 first surge protection components
211 first leads
212 second leads
22 second surge protection components
221 third leads
222 the 4th leads
23 third surge protection components
231 the 5th leads
232 the 6th leads
24 gaps
30 overheat protector components
31 contact sites
311 first solder joints
32 contact sites
321 second solder joints
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
First please refer to the 1st, 2, shown in 3 figures, a kind of three-phase Thermal protection overvoltage component, it includes：One substrate 10, a surge are protected
Protect unit 20 and two overheat protector components 30, wherein 10 system of substrate be convexly equipped with one of parallel first fixed part 11 and
One second fixed part 12, and one first engaging portion 13 is equipped between first and second fixed part 11,12 at 10 front end of substrate
And one second engaging portion 14,20 system of surge protection unit are horizontal overlapped at least provided with one first surge protection component 21, one
Second surge protection component 22 and a third surge protection component 23, and this is resisted against with the third surge protection component 23
First and second fixed part 11 of substrate 10,12 upper ends make the surge protection unit 20 and the substrate 10 have a gap 24, and should
First surge protection component 21, the second surge protection component 22 and 23 outer layer of third surge protection component are all coated with
One insulation cortex, and be exposed to outside insulation cortex all there are two leads, more with wherein four leads be fixedly arranged in pairs this first
Engaging portion 13 and second engaging portion 14, the two overheat protector components 30 are all an elastic sheet metal, the two overheat protector groups
One end system of part 30 is fixedly arranged on first fixed part 11 and second fixed part 12 respectively, and the two overheat protector components 30
The other end all form a contact site 31,32, wherein 31 system of contact site of the overheat protector component 30 be bent inside with it is fixed
Fix to form one first solder joint 311 through scolding tin in the two of first engaging portion 13 leads, another overheat protector component 30 it
Contact site 32 is then bent and is fixedly arranged on inside the two of second engaging portion 14 leads and fixes to form one second solder joint through scolding tin
321, the two overheat protector components 30 are enabled all by bending and with a rebound stress, so that generating height in the surge protection unit 20
Temperature and melt first solder joint 311 or second solder joint 321 and form escape and disconnect.
The practical connection status of foregoing invention, shown in the equivalent circuit diagram please refer to the 4th figure, first surge protection
There is component 21 one first lead 211 and one second lead 212, the second surge protection component 22 to have a third lead
221 and one the 4th lead 222, the third surge protection component 23 there is one the 5th lead 231 and one the 6th lead 232,
First lead 211 of the first surge protection component 21 and 222 system of the 4th lead of the second surge protection component 22 with position simultaneously
Bending is fixedly arranged on the first engaging portion 13 of the substrate 10 down, the second lead 212 of the first surge protection component 21 with this
231 system of the 5th lead of three surge protection components 23 is with position and bends and is fixedly arranged on second engaging portion 14 down, and second wave
6th lead 232 of the third lead 221 and third surge protection component 23 that gush protection component 22 then bends solid down respectively
Set on 10 any place of substrate, and 31 system of contact site of the wherein one overheat protector component 30 is bent and first lead inside
211 and the 4th lead 222 fix to form one first solder joint 311 through scolding tin, the contact site of another overheat protector component 30
32 then bending is fixed to form one second solder joint 321 through scolding tin with second lead 212 and the 6th lead 232 inside, thereby
Complete the present invention.
The state of its structure actual use, it is continuous to please refer to shown in the 2nd, 3 figures, the present invention in normal operation, the wave
20 system of protection location is gushed with the two overheat protectors component 30 to connect, and permitting current is by the surge protection unit 20, conversely, working as
The surge protection unit 20 is deteriorated because of environment or pot life factor can not work normally down, then please shown in the 5th, 6 figures
See it, as the first surge protection component 21 failure and adstante febre, the first and second lead 211 of the first surge protection component 21,
212 in order to that can conduct heat to the first engaging portion 13 or the second engaging portion 14, since the scolding tin is low-melting alloy, make first weldering
Point 311 or the second solder joint 321 are melted because of high fever, and then the overheat protector component 30 is allowed to lose solder joint and spring back escape, are reached
Off-state is to avoid the first surge protection component 21 continues high fever and burns on fire；Such as the second surge protection component 22 fails
And adstante febre, the 4th lead 222 of the second surge protection component 22 in order to the first engaging portion 13 can be conducted heat to, make this first
Solder joint 311 is melted because of high fever, and then the overheat protector component 30 is allowed to lose solder joint and spring back escape, reach off-state with
The second surge protection component 22 is avoided to continue high fever and burn on fire；Such as the third surge protection component 23 failure and adstante febre,
5th lead 231 of the third surge protection component 23 makes second solder joint 321 in order to that can conduct heat to the second engaging portion 14
It is melted because of high fever, and then the overheat protector component 30 is allowed to lose solder joint and spring back escape, reach off-state to avoid third
Surge protection component 23 continue high fever and burn it is on fire, in conclusion so that reaching protection circuit and the mesh that burns of circuit board
, promote the safety person that circuit structure uses.
By the structure of above-mentioned specific embodiment, following benefits can be obtained：(1) the surge protection unit 20 first,
Two, three surge protection components, 21,22,23 system is horizontal mutually overlapped, and respectively the lead will be bent and fix down in a vertical manner
In on substrate 10, thereby so that substantially reducing the whole height of structure, installed in favor of the collocation of electrical appliance, and third wave
It gushes protection component 23 to be more resisted against the first and second fixed part 11,12 of substrate 10 and possess a gap 24, and then keeps empty enough
Between, reach the purpose of elastic sheet metal rebound when scolding tin melts.
(2) the two overheat protector components 30 be elastic sheet metal, and be respectively welded in the surge protection unit 20 its
In four leads form connection so that significantly simplify the number of leads of 10 connection of substrate, in addition 30 system of overheat protector component difference
It is connected on same position with two leads, and only forms the first solder joint 311 and the second solder joint 321, be easily worked and substantially carry
Rise the composition efficiency of structure.
(3) two 30 systems of overheat protector component are connected using the relatively low scolding tin of fusing point and the lead of the surge protection unit 20
Knot forms the first and second solder joint 31,32, and enables the overvoltage protect because being bent under the collocation with rebound stress through elastic sheet metal
When protecting assembly 30 fails and generates high temperature, can scolding tin be melted via lead heat conduction really, reach the purpose of escape disconnection immediately,
And respectively the overheat protector component 30 all has the effect of two surge protection components of cut-out, and the safety in utilization of structure is substantially improved.
In conclusion the present invention has reached breakthrough structure design really, and there is the invention content of improvement, while again can
Enough reach the usability and progressive in industry, and the present invention is not found in any publication, also has novelty, when meeting Patent Law phase
The regulation of law article is closed, whence proposes application for a patent for invention in accordance with the law, earnestly asks an ancient unit of weight office juror and authorizes legal monopoly power, most sense is prayed.
Only as described above, only preferable embodiment, when cannot with restriction implementation of the invention
Range；The equivalent changes and modifications made generally according to scope of the present invention patent all should still belong to patent of the present invention and cover it
In range.
Claims (4)
1. a kind of three-phase Thermal protection overvoltage component, it includes：
One substrate, the substrate system are convexly equipped with one of parallel first fixed part and one second fixed part, and in the substrate front end
Place is equipped with one first engaging portion and one second engaging portion between first and second fixed part；
One surge protection unit, be it is horizontal it is overlapped at least provided with one first surge protection component, one second surge protection component with
And a third surge protection component, and the two of the substrate fixed part upper ends are resisted against with the third surge protection component, make this
Surge protection unit and the substrate have a gap, and the first surge protection component, the second surge protection component and should
Third surge protection component all has two leads, and is fixedly arranged on first engaging portion in pairs with wherein four leads and is somebody's turn to do
Second engaging portion；
Two overheat protector components, are a respectively elastic sheet metal, and one end system of the two overheat protector components is fixedly arranged on this respectively
First fixed part and second fixed part, and the other end of the two overheat protector components all forms a contact site, wherein one should
The contact part of overheat protector component is bent and is fixedly arranged on inside the two of first engaging portion leads and fixes to form one through scolding tin
The contact site of first solder joint, another overheat protector component is then bent and is fixedly arranged on inside the two of second engaging portion leads warp
Scolding tin is fixed to form one second solder joint, enables the two overheat protector components all by bending and with a rebound stress, so that in the wave
Protection location is gushed to generate high temperature and melt first solder joint or second solder joint formation escape disconnection.
2. according to described in claim the 1st it, wherein the first surge protection component, the second surge protection component
And the third surge protection component outer layer is all coated with an insulation cortex.
3. according to described in claim the 1st it, wherein the first surge protection component has one first lead and one
Second lead, the second surge protection component have a third lead and one the 4th lead, third surge protection component tool
Have one the 5th lead and one the 6th lead, the first lead of the first surge protection component and the second surge protection component it
4th lead system is with position and bends and is fixedly arranged on first engaging portion down, the second lead of the first surge protection component with this
5th lead system of three surge protection components is with position and bends and is fixedly arranged on second engaging portion down, and the second surge protection group
The third lead of part and the 6th lead of third surge protection component then bend and are fixedly arranged on the substrate down respectively.
4. according to described in claim the 3rd it, wherein the contact part of the overheat protector component be bent inside with should
First lead and the 4th lead are fixed to form one first solder joint through scolding tin, and the contact site of another overheat protector component is then past
Interior bending is fixed to form one second solder joint through scolding tin with second lead and the 6th lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905364.2A CN108766844A (en) | 2018-07-27 | 2018-07-27 | A kind of three-phase Thermal protection overvoltage component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905364.2A CN108766844A (en) | 2018-07-27 | 2018-07-27 | A kind of three-phase Thermal protection overvoltage component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766844A true CN108766844A (en) | 2018-11-06 |
Family
ID=63969646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810905364.2A Pending CN108766844A (en) | 2018-07-27 | 2018-07-27 | A kind of three-phase Thermal protection overvoltage component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108766844A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040246645A1 (en) * | 2003-06-04 | 2004-12-09 | Bel Fuse Incorporated | Telecom circuit protection apparatus |
| KR101036593B1 (en) * | 2010-02-05 | 2011-05-24 | 서인석 | Damage protection device for surge protector |
| US20120105191A1 (en) * | 2009-06-24 | 2012-05-03 | Robert Wang | Explosion-roof and flameproof ejection type safety surge-absorbing module |
| CN202940581U (en) * | 2012-09-03 | 2013-05-15 | 吕玉萍 | Novel protection assembly constituted by discharging mechanism and piezoresistor |
| CN103168330A (en) * | 2010-08-27 | 2013-06-19 | 库柏技术公司 | Compact transient voltage surge suppression device |
| CN204516711U (en) * | 2015-03-12 | 2015-07-29 | 吕玉萍 | A kind of by the novel component of two pad mode as excess temperature open circuit protection |
| TWM538225U (en) * | 2016-04-19 | 2017-03-11 | Yun Zhang | Three-phase circuit over-voltage over-temperature protection component |
| CN106849046A (en) * | 2017-04-17 | 2017-06-13 | 四川中光防雷科技股份有限公司 | A kind of power source surge protector |
| CN208706559U (en) * | 2018-07-27 | 2019-04-05 | 覃兆珍 | A kind of three-phase Thermal protection over-voltage component |
-
2018
- 2018-07-27 CN CN201810905364.2A patent/CN108766844A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040246645A1 (en) * | 2003-06-04 | 2004-12-09 | Bel Fuse Incorporated | Telecom circuit protection apparatus |
| US20120105191A1 (en) * | 2009-06-24 | 2012-05-03 | Robert Wang | Explosion-roof and flameproof ejection type safety surge-absorbing module |
| KR101036593B1 (en) * | 2010-02-05 | 2011-05-24 | 서인석 | Damage protection device for surge protector |
| CN103168330A (en) * | 2010-08-27 | 2013-06-19 | 库柏技术公司 | Compact transient voltage surge suppression device |
| CN202940581U (en) * | 2012-09-03 | 2013-05-15 | 吕玉萍 | Novel protection assembly constituted by discharging mechanism and piezoresistor |
| CN204516711U (en) * | 2015-03-12 | 2015-07-29 | 吕玉萍 | A kind of by the novel component of two pad mode as excess temperature open circuit protection |
| TWM538225U (en) * | 2016-04-19 | 2017-03-11 | Yun Zhang | Three-phase circuit over-voltage over-temperature protection component |
| CN106849046A (en) * | 2017-04-17 | 2017-06-13 | 四川中光防雷科技股份有限公司 | A kind of power source surge protector |
| CN208706559U (en) * | 2018-07-27 | 2019-04-05 | 覃兆珍 | A kind of three-phase Thermal protection over-voltage component |
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