CN102723155B - Adjustable value over-current overvoltage protector - Google Patents
Adjustable value over-current overvoltage protector Download PDFInfo
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- CN102723155B CN102723155B CN201210235542.8A CN201210235542A CN102723155B CN 102723155 B CN102723155 B CN 102723155B CN 201210235542 A CN201210235542 A CN 201210235542A CN 102723155 B CN102723155 B CN 102723155B
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- varistor
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- adjustable value
- overvoltage protector
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Abstract
Adjustable value over-current overvoltage protector, relates to the protection device of electronic devices and components.It is an object of the invention to provide a kind of can the adjustable value over-current overvoltage protector of overvoltage the most anti-lightning strike, anti-; including varistor and housing; the pin of varistor passes from the bottom of housing; it is filled with quartz sand in space between inner walls and varistor outer wall; it is characterized in that: the quantity of described varistor is at least 2; described varistor is provided with gap each other, and the pin of described varistor is separate.The adjustable value over-current overvoltage protector that the present invention provides expands the protection domain to overcurrent-overvoltage value; substantially increase the flame-proof explosion-proof rate of varistor; add the safety in utilization of varistor, can be used as that various electronic devices and components are anti-lightning strike, the protection device of anti-overvoltage.
Description
Technical field
The present invention relates to the protection device of electronic devices and components, a kind of can the over-current overvoltage protector of adjustable value of overvoltage the most anti-lightning strike, anti-.
Background technology
At present; various electronic devices and components are provided with the varistor protection device as overvoltage anti-lightning strike, anti-more; its operation principle is when being added in the voltage above it less than its threshold value " UN "; the electric current flowing through it is minimum, is equivalent to a valve shut, when voltage is more than UN; the electric current flowing through it increases sharply; be equivalent to valve open, by relatively-stationary for voltage clamp to magnitude of voltage, thus realize the protection to late-class circuit.Utilize this function, can be with the abnormal overvoltage often occurred in suppression circuit, the components and parts in protection circuit are from the infringement of overvoltage.
When varistor be struck by lightning or transient overvoltage often produce spark when encroaching on, cause varistor in electrical equipment internal-combustion or explosion, in order to increase its safety used, often being encapsulated in fixing housing by varistor, enclosure interior is filled with the insulant such as epoxy resin, quartz sand.This kind of measure reduces the probability that varistor is impaired to a great extent, but can not thoroughly stop the generation of disaster, however it remains potential safety hazard.For in the industry, the use safety coefficient of varistor is improved several percentage points is all extremely difficult, improves the flame-proof explosion-proof rate of varistor the most further, is pendulum urgent problem in face of technical staff.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of can the over-current overvoltage protector of adjustable value of overvoltage the most anti-lightning strike, anti-, this protector substantially increases the flame-proof explosion-proof rate of varistor, adds the safety in utilization of varistor.
For achieving the above object; the invention provides a kind of adjustable value over-current overvoltage protector; including varistor and housing; varistor is arranged in housing; the pin of varistor passes from the bottom of housing, is filled with quartz sand in the space between inner walls and varistor outer wall, it is characterised in that: the quantity of described varistor is at least 2; described varistor is provided with gap each other, and the pin of described varistor is separate.This protector be can be implemented in outside and electrically connected by the way of in series or in parallel by multiple varistors by lead-in wire; thus obtain the resistance that an original varistor does not has; and the different electric connection mode arbitrarily adjusting each varistor of the occasion that can be used according to this protector, to meet different overvoltage demands anti-lightning strike, anti-.
Preferably, described housing is horizontal cylindrical housings, described varistor arrangement mode in housing is for and vertical case parallel or perpendicular or parallel with cylindrical center's line place plane and deposits, the opening that the bottom of described housing is interlinked to the outside in being provided with, the pin of described varistor blocks from the bottom surface being plugged in described housing bottom opening and passes.
Preferably, the closure of described bottom surface blocks for sealing.
Preferably, the closure of described bottom surface for housing with the sheet material of material, described sheet material is threaded connection with housing bottom opening, clamping, sealing by fusing or bonding mode connect.
Be provided with the envelope of cylinder to further improve the flame-proof explosion-proof of adjustable value over-current overvoltage protector provided by the present invention, the preferably outside at described housing, the pin of varistor passes from the bottom of described envelope.
Preferably, the medial wall of described envelope and the wall contacts of described housing.
Preferably; it is provided with gap between medial wall and the outer wall of described housing of described envelope; in order to further improve the flame-proof explosion-proof of adjustable value over-current overvoltage protector provided by the present invention, preferably in described gap, it is filled with insulant, such as quartz sand or glass fibre.
Preferably, described envelope is made up of two external members cooperated.
Preferably, said two external member is threaded connection, clamping, sealing by fusing or bonding mode connect.
Preferably, described housing and described envelope all select insulant.
Beneficial effect:
Compared with prior art; the adjustable value over-current overvoltage protector that the present invention provides is provided with multiple varistor; this protector be can be implemented in outside and electrically connected by the way of in series or in parallel by multiple varistors by lead-in wire; thus obtain the resistance that an original varistor does not has; and the different electric connection mode arbitrarily adjusting each varistor of the occasion that can be used according to this protector, to meet different overvoltage demands anti-lightning strike, anti-.The adjustable value over-current overvoltage protector that the present invention provides expands the protection domain to overcurrent-overvoltage value, substantially increases the flame-proof explosion-proof rate of varistor, adds the safety in utilization of varistor.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 cross-sectional view along cylindrical center's line.
Fig. 2 is the embodiment of the present invention 2 cross-sectional view along cylindrical center's line.
Fig. 3 is the embodiment of the present invention 3 cross-sectional view along cylindrical center's line.
Each component names in figure:
1 varistor, 2 housings, 3 pins, 4 housing bottom openings, 5 bottom surface closure, 6 external members A, 7 external members B, 8 envelopes, 9 gaps, 10 screw threads, 11 envelope bottom openings.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, and following example are explanation of the invention, the invention is not limited in following example.
Embodiment 1
As it is shown in figure 1, be a kind of cross-sectional view along cylindrical center's line of the present invention.nullThis adjustable value over-current overvoltage protector includes 3 varistors 1 and horizontal cylindrical housings 2，3 varistors 1 are put into housing 2 inside by the opening 4 bottom housing 2，This 3 varistors 1 arrangement mode in housing 2 is parallel with cylindrical center's line place plane，And varistor 1 is provided with gap each other，Block at opening 4 as bottom surface closure 5 with the sheet material of material with housing 2，Bottom surface closure 5 bonds together with opening 4，Pin 3 passes from bottom surface closure 5，Pin 3 is separate，Housing 2 together puts into, together with the varistor 1 of its inside, cylindrical envelope 8 inside being made up of external member A 6 and external member B 7，The medial wall of envelope 8 and the wall contacts of housing 2，Pin 3 passes from external member B 7，Pin 3 is separate，External member A 6 and external member B 7 bond together.
Housing 2, bottom surface closure 5, external member A 6 and external member B 7 in the present embodiment are ceramic sintering.
Embodiment 2
As in figure 2 it is shown, be a kind of cross-sectional view along cylindrical center's line of the present invention.nullThis adjustable value over-current overvoltage protector includes 3 varistors 1 and horizontal cylindrical housings 2，3 varistors 1 are put into housing 2 inside by the opening 4 bottom housing 2，This 3 varistors 1 arrangement mode in housing 2 is parallel with cylindrical center's line place plane and square crossing distribution，And varistor 1 is provided with gap each other，Opening 4 blocks with sealing，Pin 3 passes from bottom surface closure 5，Pin 3 is separate，Housing 2 together puts into, together with the varistor 1 of its inside, cylindrical envelope 8 inside being made up of external member A 6 and external member B 7，It is provided with gap 9 between medial wall and the outer wall of housing 2 of envelope 8，It is filled with glass fibre in gap 9，Pin 3 passes from external member A 6，Pin 3 is separate，External member A 6 and external member B 7 are linked together by screw thread 10.
Housing 2, external member A 6 and external member B 7 in the present embodiment are plastic material.
Embodiment 3
As it is shown on figure 3, be a kind of cross-sectional view along cylindrical center's line of the present invention.nullThis adjustable value over-current overvoltage protector includes 3 varistors 1 and horizontal cylindrical housings 2，3 varistors 1 are put into housing 2 inside by the opening 4 bottom housing 2，This 3 varistors 1 arrangement mode in housing 2 is vertical with cylindrical center's line place plane，And varistor 1 is provided with gap each other，Pin 3 stretches to the outside of housing 2 from opening 4，Pin 3 is separate，Housing 2 is together put into inside the cylindrical envelope 8 of bottom opening together with the varistor 1 of its inside，It is provided with gap 9 between medial wall and the outer wall of housing 2 of envelope 8，Block at the opening 11 bottom the opening 4 and envelope of housing bottom as bottom surface closure 5 with the sheet material of material with envelope 8 simultaneously，Bottom surface closure 5 bonds together with opening 4 and opening 11，Pin 3 passes from bottom surface closure 5，Pin 3 is separate.
Housing 2, envelope 8 in the present embodiment are plastic material.
Claims (5)
1. an adjustable value over-current overvoltage protector, including varistor and housing, varistor is arranged in housing, the pin of varistor passes from the bottom of housing, it is filled with quartz sand in space between inner walls and varistor outer wall, it is characterized in that: the quantity of described varistor is at least 2, described varistor is provided with gap each other, the pin of described varistor is separate, described housing is horizontal cylindrical housings, described varistor arrangement mode in housing is for and vertical case parallel or perpendicular or parallel with cylindrical center's line place plane and deposits, the opening that the bottom of described housing is interlinked to the outside in being provided with, the pin of described varistor blocks from the bottom surface being plugged in described housing bottom opening and passes, the closure of described bottom surface blocks for sealing；The outside of described housing is provided with the envelope of cylinder, and the pin of varistor passes from the bottom of described envelope.
2. according to the adjustable value over-current overvoltage protector described in claim 1, it is characterised in that: the medial wall of described envelope and the wall contacts of described housing.
Adjustable value over-current overvoltage protector the most according to claim 1, it is characterised in that: it is provided with gap between medial wall and the outer wall of described housing of described envelope.
Adjustable value over-current overvoltage protector the most according to claim 1, it is characterised in that: described envelope is made up of two external members cooperated.
Adjustable value over-current overvoltage protector the most according to claim 4, it is characterised in that: said two external member is threaded connection, clamping, sealing by fusing or bonding mode connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235542.8A CN102723155B (en) | 2012-07-09 | 2012-07-09 | Adjustable value over-current overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235542.8A CN102723155B (en) | 2012-07-09 | 2012-07-09 | Adjustable value over-current overvoltage protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102723155A CN102723155A (en) | 2012-10-10 |
| CN102723155B true CN102723155B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210235542.8A Active CN102723155B (en) | 2012-07-09 | 2012-07-09 | Adjustable value over-current overvoltage protector |
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Citations (6)
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| CN2399806Y (en) * | 1999-11-30 | 2000-10-04 | 李炬 | Tube-shape sealed pressure sensitive resistor |
| US6188307B1 (en) * | 1995-03-03 | 2001-02-13 | Murata Manufacturing Co., Ltd. | Thermistor apparatus and manufacturing method thereof |
| CN2479613Y (en) * | 2001-04-24 | 2002-02-27 | 深圳市固派电子有限公司 | Multi-piece compounded heat-variable resistor |
| CN1933040A (en) * | 2006-09-27 | 2007-03-21 | 成都铁达电子有限责任公司 | Easy-to-produce antiexplosive voltage-dependent resister |
| CN201489931U (en) * | 2009-08-07 | 2010-05-26 | 深圳市辰驹电子科技有限公司 | Safety surge-proof lightning arrester |
| CN202695036U (en) * | 2012-07-09 | 2013-01-23 | 深圳市辰驹电子科技有限公司 | Value-adjustable overcurrent and overvoltage protector |
-
2012
- 2012-07-09 CN CN201210235542.8A patent/CN102723155B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188307B1 (en) * | 1995-03-03 | 2001-02-13 | Murata Manufacturing Co., Ltd. | Thermistor apparatus and manufacturing method thereof |
| CN2399806Y (en) * | 1999-11-30 | 2000-10-04 | 李炬 | Tube-shape sealed pressure sensitive resistor |
| CN2479613Y (en) * | 2001-04-24 | 2002-02-27 | 深圳市固派电子有限公司 | Multi-piece compounded heat-variable resistor |
| CN1933040A (en) * | 2006-09-27 | 2007-03-21 | 成都铁达电子有限责任公司 | Easy-to-produce antiexplosive voltage-dependent resister |
| CN201489931U (en) * | 2009-08-07 | 2010-05-26 | 深圳市辰驹电子科技有限公司 | Safety surge-proof lightning arrester |
| CN202695036U (en) * | 2012-07-09 | 2013-01-23 | 深圳市辰驹电子科技有限公司 | Value-adjustable overcurrent and overvoltage protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102723155A (en) | 2012-10-10 |
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