CN107910144A - A kind of integrated form has the varistor of overheating protection function - Google Patents
A kind of integrated form has the varistor of overheating protection function Download PDFInfo
- Publication number
- CN107910144A CN107910144A CN201710947796.5A CN201710947796A CN107910144A CN 107910144 A CN107910144 A CN 107910144A CN 201710947796 A CN201710947796 A CN 201710947796A CN 107910144 A CN107910144 A CN 107910144A
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- China
- Prior art keywords
- pushing mechanism
- pin
- shrapnel
- electrode
- heat
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Classifications
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- 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
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuses (AREA)
Abstract
The invention discloses the varistor that a kind of integrated form has heat protection function; the pin being connected including voltage dependent resistor chip and with voltage dependent resistor chip; at least two are further included to be separated from each other the de- device of the shrapnel electrode of setting, heat, warning device and include guiding parts and pushing mechanism for the box by the encapsulating of each component together, the de- device of heat；Welded respectively with the pin of resistance chip one end of each shrapnel electrode, form solder joint, pushing mechanism is used for the solder joint under the conditions of hot melt, shrapnel electrode separated with pin or pre-separation after act, isolate shrapnel electrode and pin, guiding parts is used for fixed or card and sets pin and shrapnel electrode, and is oriented to for pushing mechanism formation action, makes pushing mechanism according to the action of setting path.The setting that product of the present invention passes through the de- device of heat a, it is possible to achieve element protects the effect of polyphase circuit at the same time, reduces the quantity of the over-voltage protection element in polyphase circuit.
Description
Technical field
The present invention relates to industrial electric technical field, the more particularly to varistor with overheating protection function.
Background technology
All the time, it is usually that a variable resistor connects a thermal tripping in the overvoltage protection element used on the market
Mechanism, such as the described products of patent CN101361145A, is mainly realized by mechanical mechanism and an eutectic welding contact
The purpose of thermal tripping, occurs problems with during design and producing：
1st, varistor one thermal tripping mechanism of series connection, protection can not be realized, it is necessary to simultaneously polyphase circuit between each other
Join multiple protection elements, of high cost and circuit structure sets complicated.
2nd, the material of pushing mechanism requires higher, higher to electrical insulating property and thermal stability requirement, when product occurs
During abnormal high temperature, each component will have enough heat endurances to ensure the temperature capacity of whole element.
3rd, resistance and motive force are appropriate during the motion for each start point of mechanical device design requirement, and mechanism is dynamic
Actuating mechanism guidance quality will be got well during work, to ensure reliable separation, if cannot complete to separate upon an over-temperature condition, can be led
Varistor is caused the hazardous act such as to catch fire.
4th, varistor is completed to set warning device after separating with thermal tripping mechanism, allows element to alarm after completing separation,
If alarm cannot be sent in time, it will bring great security risk.
The content of the invention
Based on the deficiencies of the prior art, it is an object of the invention to provide the pressure that a kind of integrated form has overheating protection function
Quick resistance, realizes that a module to the overvoltage protection of polyphase circuit, ensures that actuating mechanism guidance quality is good in the de- device of heat at the same time
It is good to be separated so that completion is reliable, and have the function of to extinguish electric arc, any one-phase circuit separation can all have alarm signal output.
To achieve the above object, the technical scheme is that：
A kind of integrated form have heat protection function varistor, including voltage dependent resistor chip and with voltage dependent resistor chip connect
The pin connect, further includes the de- device of at least two shrapnel electrodes for being separated from each other setting, heat, warning device and for by each component
The box of encapsulating together, the de- device of heat include guiding parts and pushing mechanism；One end point of each shrapnel electrode
Do not welded with the pin of resistance chip, form solder joint, the pushing mechanism is used for the solder joint under the conditions of hot melt, shrapnel electrode with
Pin separate or pre-separation after act, isolate shrapnel electrode and pin, the guiding parts is used for fixed or card and sets described draw
Foot and the shrapnel electrode, and be oriented to for pushing mechanism formation action, the pushing mechanism is acted according to setting path,
The setting path ensures that the shrapnel electrode is not contacted with pin isolation, and pushing mechanism is driven the warning device
Start alarm.
Further, the guiding parts includes bottom plate and side plate, and pressure-sensitive electricity is respectively arranged with the bottom plate and side plate
Chip pin card slot is hindered, the screens of mounting elastic sheet electrode is additionally provided with the bottom plate；Pushing part is additionally provided with the side plate
Part installation position and the pushing mechanism formed by the protrusive board on side plate are oriented to position, and the warning device is arranged on the top of the side plate
End.
Further, the pushing mechanism includes spring and is arranged on the lead of spring one end, the spring it is another
End is fixed on the bottom plate of the guiding parts, and the lead is arranged in the pushing mechanism and is oriented in position, and it is pushed up
End contacts or close with the weld of the shrapnel electrode and the voltage dependent resistor chip pin, in the shrapnel electrode and described
After the separation of voltage dependent resistor chip pin or pre-separation, the lead is promoted to pass through the shrapnel electrode by the elastic force of the spring
With the junction of the voltage dependent resistor chip, isolate both.
Beneficial effects of the present invention are：Pass through the setting of the de- device of heat, it is possible to achieve an element protects multiphase electric at the same time
The effect on road, reduces the quantity of the over-voltage protection element in polyphase circuit, can by de- contact of the device with warning device of heat
To realize that any one-phase circuit protection element separation can all have alarm signal output, the reliability of protection is improved, and entirely
Varistor it is small, reduce assembly space in a device.
Brief description of the drawings
Fig. 1 is that the heat of the specific embodiment of the invention takes off the structure diagram before device does not separate；
Fig. 2 is that the heat of the specific embodiment of the invention takes off the structure diagram after device separation.
Embodiment
Carried out clearly below with reference to the technique effect of the design of embodiment and attached drawing to the present invention, concrete structure and generation
Chu, be fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments, those skilled in the art is without creative efforts
The other embodiment obtained, belongs to the scope of protection of the invention.
As depicted in figs. 1 and 2, a kind of integrated form have heat protection function varistor, including voltage dependent resistor chip 1 and
3 pins 2 being connected with voltage dependent resistor chip 1, further include the de- device 4 of two shrapnel electrodes for being separated from each other setting 3, heat, report
Alarm device 5 and for each component encapsulating box 6 together, the de- device 4 of heat to be included guiding parts 41 and pushing mechanism 42；Often
One end of a shrapnel electrode 3 is welded with the pin 2 of voltage dependent resistor chip respectively, forms solder joint, shrapnel electrode 3 and pressure after welding
Quick resistance chip 1 forms multinomial protective resistor, and pushing mechanism 42 is used for the solder joint under the conditions of hot melt, and shrapnel electrode 3 is with drawing
Foot 2 separate or pre-separation after act, isolate shrapnel electrode 3 and pin 2, solder joint hot melt be due to when varistor overheat, heat
Amount can be transferred to solder joint, and solder joint fusion welding relay rapidly reduces, and the shrapnel electrode 3 of solder joint connection can depart from solder joint, guiding parts
41, which are used for fixed or card, sets pin and shrapnel electrode 3, and is oriented to for 42 formation of pushing mechanism action, makes pushing mechanism 42 according to setting
Determine path action, which ensures that shrapnel electrode 3 is isolated with pin 2 and do not contact, isolates between shrapnel electrode 3 and varistor
Electric arc, and make pushing mechanism 42 can drive warning device 5 start alarm, to complete the effect of overvoltage protection.
Specifically, guiding parts 41 includes bottom plate 411 and side plate 412, pressure is respectively arranged with bottom plate 411 and side plate 412
Quick resistance chip pincard groove 413, the screens 414 of mounting elastic sheet electrode is additionally provided with bottom plate 411；Also set up on side plate 412
There are pushing mechanism installation position 415 and the pushing mechanism formed by the protrusive board 417 on side plate to be oriented to position 416, warning device 5 is arranged on
The top of side plate 412.
Specifically, pushing mechanism 42 includes spring 421 and the lead 422 for being arranged on 421 one end of spring, spring 421
The other end is fixed on the bottom plate 411 of guiding parts 41, and lead 422 is arranged in pushing mechanism and is oriented in position 416, and its
Top contacts or close with the weld of shrapnel electrode 3 and the pin 2 of voltage dependent resistor chip, in shrapnel electrode 3 and varistor
The pin 2 of chip separate or pre-separation after, lead 422 is promoted through shrapnel electrode 3 and varistor core by 421 elastic force of spring
The junction of piece, isolates both.
In assembling, rheostat is equipped with first, after the pin 2 of varistor tile and electrode slice and electrode slice is welded
Encapsulating together, then welds together with shrapnel electrode 3, is assembled into the de- device guiding component 41 of heat, then the de- device of heat
Pushing mechanism 42 is assembled on the guiding parts 41 of the de- device of heat, and box 6 is finally loaded together with warning device 5.
It should be noted that described above is presently preferred embodiments of the present invention, the invention is not limited in above-mentioned
Embodiment, as long as it reaches the technique effect of the present invention with identical means, should all belong to protection scope of the present invention.
Claims (3)
1. a kind of integrated form has the varistor of heat protection function, including voltage dependent resistor chip and is connected with voltage dependent resistor chip
Pin, it is characterised in that：Further include at least two and be separated from each other the shrapnel electrode of setting, heat de- device, warning device and use
In the box by the encapsulating of each component together, the de- device of heat includes guiding parts and pushing mechanism；Each shrapnel electricity
One end of pole is welded with the pin of resistance chip respectively, forms solder joint, and the pushing mechanism is used for the solder joint under the conditions of hot melt,
Shrapnel electrode separated with pin or pre-separation after act, isolate shrapnel electrode and pin, the guiding parts be used for it is fixed or
Card sets the pin and the shrapnel electrode, and is oriented to for pushing mechanism formation action, makes the pushing mechanism according to setting
Determine path action, which ensures that the shrapnel electrode is not contacted with pin isolation, and pushing mechanism is driven
The alarm activation alarm.
2. integrated form as claimed in claim 1 has the varistor of heat protection function, it is characterised in that：The guiding parts
Including bottom plate and side plate, voltage dependent resistor chip pin card slot is respectively arranged with the bottom plate and side plate, is also set on the bottom plate
It is equipped with the screens of mounting elastic sheet electrode；It is additionally provided with pushing mechanism installation position on the side plate and is formed by the protrusive board on side plate
Pushing mechanism is oriented to position, and the warning device is arranged on the top of the side plate.
3. integrated form as claimed in claim 2 has the varistor of heat protection function, it is characterised in that：The pushing mechanism
Including spring and the lead for being arranged on spring one end, the other end of the spring is fixed at the bottom plate of the guiding parts
On, the lead is arranged in the pushing mechanism and is oriented in position, and its top and the shrapnel electrode and the varistor
The weld contact or close of chip pin, in the shrapnel electrode and voltage dependent resistor chip pin separation or pre-separation
Afterwards, the lead is promoted to pass through the shrapnel electrode and the junction of the voltage dependent resistor chip by the elastic force of the spring,
Isolate both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947796.5A CN107910144A (en) | 2017-10-12 | 2017-10-12 | A kind of integrated form has the varistor of overheating protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947796.5A CN107910144A (en) | 2017-10-12 | 2017-10-12 | A kind of integrated form has the varistor of overheating protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107910144A true CN107910144A (en) | 2018-04-13 |
Family
ID=61840466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710947796.5A Pending CN107910144A (en) | 2017-10-12 | 2017-10-12 | A kind of integrated form has the varistor of overheating protection function |
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| Country | Link |
|---|---|
| CN (1) | CN107910144A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914696A (en) * | 2004-04-19 | 2007-02-14 | 苏勒过压保护公司 | Surge voltage protection device with arc-breaking means |
| CN101261893A (en) * | 2008-04-14 | 2008-09-10 | 佛山市浦斯电子有限公司 | Heat protection pressure sensitive resistor module |
| CN104008936A (en) * | 2014-06-13 | 2014-08-27 | 四川中光防雷科技股份有限公司 | Separating and arc shielding device and small-size high-safety all-mode protection surge protection device |
| CN205622224U (en) * | 2016-05-17 | 2016-10-05 | 广西新全通电子技术有限公司 | Preventing arc type divides disconnected surge protection device fast |
| CN206524626U (en) * | 2017-02-27 | 2017-09-26 | 四川中光防雷科技股份有限公司 | A kind of surge protector arc mechanism |
-
2017
- 2017-10-12 CN CN201710947796.5A patent/CN107910144A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914696A (en) * | 2004-04-19 | 2007-02-14 | 苏勒过压保护公司 | Surge voltage protection device with arc-breaking means |
| CN101261893A (en) * | 2008-04-14 | 2008-09-10 | 佛山市浦斯电子有限公司 | Heat protection pressure sensitive resistor module |
| CN104008936A (en) * | 2014-06-13 | 2014-08-27 | 四川中光防雷科技股份有限公司 | Separating and arc shielding device and small-size high-safety all-mode protection surge protection device |
| CN205622224U (en) * | 2016-05-17 | 2016-10-05 | 广西新全通电子技术有限公司 | Preventing arc type divides disconnected surge protection device fast |
| CN206524626U (en) * | 2017-02-27 | 2017-09-26 | 四川中光防雷科技股份有限公司 | A kind of surge protector arc mechanism |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |
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| RJ01 | Rejection of invention patent application after publication |