CN103943292B - A kind of safe varistor of the hot tripping indication function of band - Google Patents
A kind of safe varistor of the hot tripping indication function of band Download PDFInfo
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- CN103943292B CN103943292B CN201410134111.1A CN201410134111A CN103943292B CN 103943292 B CN103943292 B CN 103943292B CN 201410134111 A CN201410134111 A CN 201410134111A CN 103943292 B CN103943292 B CN 103943292B
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Abstract
The invention discloses the safe varistor of the hot tripping indication function of a kind of band.It is made up of shell and base, and base is provided with Thermal protection trip gear, hot dropout indication driving gear and hot dropout indicating circuit device.It is characterized in that in heat dropout safe varistor, add hot dropout indication driving gear and hot tripping indication function circuit arrangement.When in use there is deterioration in product, low temperature scolding tin fuses, spring hauls flexible lamp pole piece and the second extraction electrode departs from rapidly from electrical network, and swing on actuating device, touch the microswitch of hot tripping indication function circuit so that the light emitting diode in indicating circuit is lighted, point out piezoresistor failure, and need to change in time, thus proof load circuit is safe and reliable.
Description
Technical field
The present invention relates to a kind of piezoresistor, the safe varistor of the hot tripping indication function of a kind of band, belong to electronic component preparing technical field.
Background technology
Along with developing rapidly of automotive electronics, communication, computer, consumer electronics product and military electronic product, people are more and more higher to reliability and the security requirement of electronic devices and components.Varistor bridging on the power line due to the most aging and lightning-protection surge protection reach capacity number of times time gradual failure and catastrophic failure occur, cause product blast or on fire.Generation in order to avoid this situation; it has been developed that TMOV; varistor such as with alloy-type temperature fuse; notification number is CN 100561611 C; and hot dropout varistor; such as a kind of Thermal protection safe varistor; Application No. 201420113295.9; these varistors are energy automatic shutoff circuit when himself lost efficacy; but user is not aware that this varistor had lost efficacy; lose its anti-electric surge or lightning protection ability, therefore it can also be done in terms of safety instruction and carry out a step improvement.
Summary of the invention
It is an object of the invention to, overcome the deficiencies in the prior art, it is provided that a kind of performance is relatively reliable, and safety coefficient is high, and easy to process, moisture-proof anticorrosive performance is good, is suitable for the safe varistor of the hot tripping indication function of band of mass industrialized production.
nullThe technical scheme is that the safe varistor of the hot tripping indication function of a kind of band，Including shell and base，Base is provided with Thermal protection trip gear，The varistor that post is fixing fixed by Thermal protection trip gear in including base heat dropout storehouse，Two extraction electrodes of varistor extend outside base bottom，Base bottom is provided with the 3rd extraction electrode，And alive connection is formed with the 3rd extraction electrode、With second extraction electrode live metal electrode by eutectic welding tin welding，It is connected by spring between live metal electrode and the spring fastening on base，Base is additionally provided with hot dropout indication driving gear and hot dropout indicating circuit device，Described hot dropout indication driving gear is by power transmission shaft、Transmission base and compression spring composition，Compression spring is sleeved on power transmission shaft，Power transmission shaft is arranged on the biside plate that transmission base is relative，Can move forward and backward on biside plate，The extension both sides of transmission base and base drive device draw-in groove snapping together tightly，Make transmission base the most fixing，The front contact of power transmission shaft is corresponding with live metal electrode，The back contact of power transmission shaft is corresponding with microswitch；Described hot dropout indicating circuit device is made up of light emitting diode, resistance, card socket, plug-in unit plug, circuit substrate, twisted-pair feeder, microswitch, microswitch substrate, the 4th extraction electrode, the 5th extraction electrode.Light emitting diode, resistance, card socket, the 4th extraction electrode, the 5th extraction electrode are integrated on circuit substrate, and microswitch is integrated on microswitch substrate, and these two pieces of substrates snap in base circuit substrate draw-in groove and microswitch draw-in groove the most tightly；The twisted-pair feeder that microswitch circuit substrate is drawn, closely fastened with card socket on circuit substrate by plug-in unit plug, realizing the 4th extraction electrode, resistance, light emitting diode, card socket, plug-in unit plug, microswitch, the 5th extraction electrode series connection, the 4th extraction electrode and the 5th extraction electrode are connected on low-voltage dc power supply both positive and negative polarity.
Take the present invention of above-mentioned measure, use overheated disengaging technology, when there is moment lightning induction electric current and surge overcurrent, the resistance moment of varistor reduces rapidly, electric current is emitted rapidly, when in use there is deterioration in product self, varistor internal current persistently increases, temperature constantly raises, electrode slice temperature is caused the most constantly to rise, when electrode slice temperature reaches 130 ~ 140 DEG C, low temperature scolding tin fuses, spring hauls flexible lamp pole piece and the second extraction electrode departs from rapidly from electrical network, and swing on actuating device, the microswitch of hot tripping indication function circuit is touched by power transmission shaft, light emitting diode in circuit is lighted, prompting piezoresistor failure, and need to change in time, thus proof load circuit is safe and reliable.Present configuration is simple, easy to process, and production efficiency is high, is suitable for mass industrialized production.
Accompanying drawing explanation
Fig. 1 is package assembly schematic diagram of the present invention；
Fig. 2 is the structural representation after the present invention assembles；
Fig. 3 is longitudinal profile schematic diagram after the present invention combines；
Fig. 4 is the actuating device under normal condition of the present invention and electricity road indicating device partial enlarged drawing；
Fig. 5 is the actuating device under failure state of the present invention and electricity road indicating device partial enlarged drawing；
Fig. 6 is that actuating device of the present invention assembles schematic diagram.
In above-mentioned accompanying drawing, sequence number represents and is: shell 1, base 2, varistor 3, 3rd extraction electrode 4, spring 5, rivet shaft 6, live metal electrode 7, circuit substrate 8, microswitch 9, transmission base 10, compression spring 11, power transmission shaft 12, front contact 13, back contact 14, fixing post 2A, 2B, spring fastening 2C, fixing bayonet socket 2D, base bottom 2E, circuit substrate draw-in groove 2F, 2G, microswitch draw-in groove 2H, actuating device draw-in groove 2I, second extraction electrode 3A, first extraction electrode 3B, spring fixed hole 7A, light emitting diode 8A, resistance 8B, card socket 8C, 4th extraction electrode 8D, 5th extraction electrode 8E, plug-in unit plug 9A, microswitch substrate 9B, twisted-pair feeder 9C.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.It is pointed out that according to technical scheme, on the premise of without departing from the claims in the present invention, it is also possible to make some deformation and improvement, belong to protection scope of the present invention.
As shown in above-mentioned accompanying drawing, the present invention is made up of shell 1 and base 2, and base is provided with Thermal protection trip gear, hot dropout indication driving gear and hot dropout indicating circuit device.nullThe varistor 3 that post 2A and 2B is fixing fixed by Thermal protection trip gear in including base heat dropout storehouse，Two extraction electrode 3A and 3B of varistor 3 extend outside base bottom 2E，Base bottom 2E is additionally provided with the 3rd extraction electrode 4，3rd extraction electrode 4 is connected by rivet shaft 6 is alive with live metal electrode 7 formation，The fixing bayonet socket 2D that 3rd extraction electrode 4 is provided with by base fixes，The other end extends outside base bottom 2E，Live metal electrode 7 passes through the eutectic welding tin welding of 130 DEG C ~ 140 DEG C by low temperature scolding tin and the second extraction electrode 3A，Spring fixed hole 7A it is additionally provided with on live metal electrode 7，And the spring fastening 2C being provided with by spring 5 and base 2 is linked together，When varistor 3 internal current persistently increases，Temperature constantly raises，Electrode slice temperature is caused the most constantly to rise，When electrode slice temperature reaches 130 ~ 140 DEG C，Low temperature scolding tin fuses，Live metal electrode 7 and the second extraction electrode 3A loses weldering，The live metal electrode 7 that spring 5 hauls is rapidly separated with the second extraction electrode 3A，Piezoresistor can depart from rapidly from electrical network，Thus avoid varistor blast or fire，Play the effect of safeguard protection.
As shown in Figure 6, hot dropout indication driving gear is made up of transmission base 10, compression spring 11 and power transmission shaft 12.Compression spring 11 is sleeved on power transmission shaft 12, power transmission shaft 12 is arranged on the biside plate that transmission base 10 is relative, can move forward and backward on biside plate, the extension both sides of transmission base 10 and base drive device draw-in groove 2I snap together tightly and are fixed on base 2.Under the normal condition of the present invention, the elastic force of compression spring 11 makes the front contact 13 of power transmission shaft 12 protrude from outside transmission base 10 as shown in Figure 4, and the front contact 13 of power transmission shaft 12 is corresponding with live metal electrode 7, and the back contact 14 of power transmission shaft 12 is corresponding with microswitch 9.Under failure state of the present invention, i.e. varistor 3 internal current persistently increases, temperature constantly raises, the second extraction electrode 3A temperature is caused constantly to rise, when temperature reaches 130 ~ 140 DEG C, low temperature scolding tin fuses, spring 5 hauls live metal electrode 7 and separates with the second extraction electrode 3A, under the effect of spring 5, live metal electroplax 7 presses to the front contact 13 of power transmission shaft 12 as shown in Figure 5, make front contact 13 produce mobile, and back contact 14 touches microswitch 9, makes microswitch 9 work, light emitting diode in circuit is lighted, points out piezoresistor failure.
Hot dropout indicating circuit device is made up of light emitting diode 8A, resistance 8B, card socket 8C, plug-in unit plug 9A, circuit substrate 8, twisted-pair feeder 9C, microswitch 9, microswitch substrate 9B, the 4th extraction electrode 8D, the 5th extraction electrode 8E.Light emitting diode 8A, resistance 8B, card socket 8C, the 4th extraction electrode 8D, the 5th extraction electrode 8E are integrated on circuit substrate 8, microswitch 9 is integrated on microswitch substrate 9B, and these two pieces of substrates snap in base circuit substrate draw-in groove 2F, 2G and microswitch draw-in groove 2H the most tightly.The twisted-pair feeder 9C that microswitch substrate 9B draws, closely fastened with card socket 8C on circuit substrate 8 by plug-in unit plug 9A, realizing the 4th extraction electrode 8D, resistance 8B, light emitting diode 8A, card socket 8C, plug-in unit plug 9A, microswitch the 9, the 5th extraction electrode 8E series connection, the 4th extraction electrode 8D and the 5th extraction electrode 8E is connected on low-voltage dc power supply both positive and negative polarity.
Shell 1 and base bottom 2E are fixed by fluid sealant.
nullThe present invention is so work: the first extraction electrode 3B of the present invention and the 3rd extraction electrode 4 are connected across respectively and need both ends of power to be protected，4th extraction electrode 8D and the 5th extraction electrode 8E is connected on the both positive and negative polarity of low-voltage dc power supply，Second extraction electrode 3A plays the effect of fixing product，Do not take over what electrode，The present invention is when normal operating conditions，Second extraction electrode 3A one end of varistor 3 is tightly connected with live metal electrode 7 one end by low temperature scolding tin，When there is moment lightning induction electric current and surge overcurrent，The resistance moment of varistor 3 reduces rapidly，Electric current is emitted rapidly，When in use there is deterioration in varistor 3 self，Varistor 3 internal current persistently increases，Temperature constantly raises，The second extraction electrode 3A temperature is caused the most constantly to rise，When temperature reaches 130 ~ 140 DEG C，Low temperature scolding tin fuses，Spring 5 hauls live metal electrode 7 and the second extraction electrode 3A and departs from from electrical network rapidly，And the front contact 13 being axis swing to drive axle 12 along rivet shaft 6，Power transmission shaft wheel promotes compression spring 11 to compress，Power transmission shaft 12 moves along driving axle center，Back contact 14 is made to touch microswitch 9，Microswitch 9 works，Light emitting diode 8A in circuit is lighted，Prompting piezoresistor 3 lost efficacy，And need to change in time，Thus proof load circuit is safe and reliable.
Claims (1)
- null1. the safe varistor of the hot tripping indication function of band，Including shell and base，Base is provided with Thermal protection trip gear，The varistor that post is fixing fixed by Thermal protection trip gear in including base heat dropout storehouse，Two extraction electrodes of varistor extend outside base bottom，Base bottom is provided with the 3rd extraction electrode，It is characterized in that the 3rd extraction electrode (4) is connected by rivet shaft (6) is alive with live metal electrode (7) formation，The fixing bayonet socket (2D) that 3rd extraction electrode (4) is provided with by base (2) is fixed，The other end extends outside base bottom (2E)，Live metal electrode (7) passes through the eutectic welding tin welding of 130 DEG C ~ 140 DEG C by low temperature scolding tin and the second extraction electrode (3A)，Spring fixed hole (7A) it is additionally provided with on live metal electrode (7)，And the spring fastening (2C) being provided with by spring (5) and base (2) is linked together；Base (2) is additionally provided with hot dropout indication driving gear and hot dropout indicating circuit device, described hot dropout indication driving gear is by power transmission shaft (12), transmission base (10) and compression spring (11) composition, compression spring (11) is sleeved on power transmission shaft (12), power transmission shaft (12) is arranged on the biside plate that transmission base (10) is relative, can move forward and backward on biside plate, the extension both sides of transmission base (10) and base drive device draw-in groove (2I) snapping together tightly, make transmission base (10) the most fixing, the front contact (13) of power transmission shaft (12) is corresponding with live metal electrode (7), the back contact (14) of power transmission shaft (12) is corresponding with microswitch (9)；nullDescribed hot dropout indicating circuit device is by light emitting diode (8A)、Resistance (8B)、Card socket (8C)、Plug-in unit plug (9A)、Circuit substrate (8)、Twisted-pair feeder (9C)、Microswitch (9)、Microswitch substrate (9B)、4th extraction electrode (8D)、5th extraction electrode (8E) composition，Light emitting diode (8A)、Resistance (8B)、Card socket (8C)、4th extraction electrode (8D)、5th extraction electrode (8E) is integrated on circuit substrate (8)，Microswitch (9) is integrated on microswitch substrate (9B)，These two pieces of substrates snap in base circuit substrate draw-in groove (2F and 2G) and microswitch draw-in groove (2H) the most tightly，The twisted-pair feeder (9C) that microswitch circuit substrate (9B) is drawn，Closely fastened with card socket on circuit substrate (8C) by plug-in unit plug (9A)，Realize the 4th extraction electrode (8D)、Resistance (8B)、Light emitting diode (8A)、Card socket (8C)、Plug-in unit plug (9A)、Microswitch (9)、5th extraction electrode (8E) series connection，4th extraction electrode (8D) and the 5th extraction electrode (8E) are connected on low-voltage dc power supply both positive and negative polarity；Described shell (1) and base bottom (2E) are fixed by fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134111.1A CN103943292B (en) | 2014-04-04 | 2014-04-04 | A kind of safe varistor of the hot tripping indication function of band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134111.1A CN103943292B (en) | 2014-04-04 | 2014-04-04 | A kind of safe varistor of the hot tripping indication function of band |
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| CN103943292A CN103943292A (en) | 2014-07-23 |
| CN103943292B true CN103943292B (en) | 2016-08-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410762A (en) * | 2015-07-28 | 2017-02-15 | 有量科技股份有限公司 | Battery charging protection system and active fusing type protection device |
| CN107564639B (en) * | 2017-09-06 | 2018-10-16 | 广西新未来信息产业股份有限公司 | A kind of portable unit with thermal protection piezoresistor |
| CN113192710A (en) * | 2021-04-27 | 2021-07-30 | 广西新未来信息产业股份有限公司 | Quick-response thermal protection piezoresistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209383Y (en) * | 1994-11-24 | 1995-10-04 | 西安无线电二厂 | Indication alarm type surge absorber |
| US6184464B1 (en) * | 1998-04-27 | 2001-02-06 | Square D Company | Protective containment apparatus for potted electronic circuits |
| CN2676478Y (en) * | 2003-09-10 | 2005-02-02 | 成都凯瑞达电子技术有限公司 | Electric surge protector |
| CN203787236U (en) * | 2014-04-04 | 2014-08-20 | 广西新未来信息产业股份有限公司 | Secure pressure sensitive resistor with thermal trip indication function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780217B (en) * | 2011-05-11 | 2015-06-17 | 上海电科电器科技有限公司 | Surge protection device |
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2014
- 2014-04-04 CN CN201410134111.1A patent/CN103943292B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209383Y (en) * | 1994-11-24 | 1995-10-04 | 西安无线电二厂 | Indication alarm type surge absorber |
| US6184464B1 (en) * | 1998-04-27 | 2001-02-06 | Square D Company | Protective containment apparatus for potted electronic circuits |
| CN2676478Y (en) * | 2003-09-10 | 2005-02-02 | 成都凯瑞达电子技术有限公司 | Electric surge protector |
| CN203787236U (en) * | 2014-04-04 | 2014-08-20 | 广西新未来信息产业股份有限公司 | Secure pressure sensitive resistor with thermal trip indication function |
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