CN102709013A - High overcurrent and overvoltage protector - Google Patents
High overcurrent and overvoltage protector Download PDFInfo
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- CN102709013A CN102709013A CN2012102354726A CN201210235472A CN102709013A CN 102709013 A CN102709013 A CN 102709013A CN 2012102354726 A CN2012102354726 A CN 2012102354726A CN 201210235472 A CN201210235472 A CN 201210235472A CN 102709013 A CN102709013 A CN 102709013A
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- flame
- proof
- explosion
- piezoresistor
- housing
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Abstract
The invention discloses a high overcurrent and overvoltage protector which is the improvement of piezoresistor explosion-proof equipment. At present, under the conditions of unchanged power and volume of a piezoresistor, the occupied area of the piezoresistor in a circuit board is smaller, and the flame-retardant and anti-explosion performances of the flame-retardant and anti-explosion piezoresistor are improved. The high overcurrent and overvoltage protector comprises the piezoresistor and a flame-retardant and anti-explosion shell which is arranged at the outer part of the piezoresistor, and is characterized in that the flame-retardant and anti-explosion shell is in a cylindrical structure with an opened bottom, the piezoresistor is arranged along the axis of the cylindrical structure, and a pin of the piezoresistor is led out from a bottom plug which is plugged at a bottom round opening of the cylindrical shell; and insulation quartz sands are filled in a gap between the inner wall of the flame-retardant and anti-explosion shell and the outer wall of the piezoresistor. After the technology in the invention is adopted, under the conditions of unchanged power and volume of the existing piezoresistor, the occupied area of the piezoresistor in the circuit board is smaller; and meanwhile, the flame-retardant and anti-explosion performances of the flame-retardant and anti-explosion piezoresistor can also be improved.
Description
Technical field
The present invention relates to a kind of improvement of piezo-resistance, the flame-proof explosion-proof housing that particularly a kind of piezo-resistance is outer.
Background technology
The enhancing of Along with people's awareness of safety all is equipped with piezo-resistance in the now general household electrical appliance, as the device of lightning protection, anti-surge electric current.But, when running into the thunderbolt overtension, surpassed bearing of piezo-resistance and ability, or piezo-resistance ageing failure is easy to occur the problem of piezo-resistance blast on fire.Burn out circuit board thus, damage equipment is heavy then cause fire.For addressing this problem; The Chinese patent document discloses a kind of piezo-resistance flame-proof explosion-proof encapsulating structure; It is provided with the housing of a flame-proof explosion-proof outside existing piezo-resistance; This housing can stop flare to be gone out to a certain extent, both on certain degree, makes piezo-resistance on fire or exploded thereby reached, and can not cause that also other components and parts on the circuit board are on fire.But still can there be potential safety hazard in this set, like voltage instability regularly, still may make piezo-resistance produce the risk of blast, and finally damage circuit board.The housing of this flame-proof explosion-proof is generally a cube shaped box body simultaneously, and device has piezo-resistance in box body, and it occupies bigger on circuit board.Along with electronic product is more and more compact, the area of circuit board is more and more littler, and this just needs the position of the shared circuit board of piezo-resistance of equal-wattage more little good more.
Summary of the invention
The objective of the invention is to be to solve under the situation of existing piezo-resistance power and constancy of volume, its occupy less board area.
Another object of the present invention is to improve the flame-proof explosion-proof performance of existing flame-retardant and explosion-proof voltage dependent resistor.
And a kind of high anti-overflow overvoltage protector that provides.
The technical scheme that the present invention adopts to achieve these goals is: it comprises piezo-resistance and is arranged on the outer flame-proof explosion-proof housing of piezo-resistance; Its characteristic is: said flame-proof explosion-proof housing is the cylindrical structural of bottom opening; Piezo-resistance is provided with along the cylindrical structural center line, and the piezo-resistance pin is drawn by the bottom surface shutoff of the bottom surface circular open that is plugged in cylindrical housings; In the inwall of said flame-proof explosion-proof housing and the space between the piezo-resistance outer wall, be filled with the insulation quartz sand.
Further, the outside of described flame-proof explosion-proof housing is provided with an envelope.
Further, described envelope madial wall and top contact with flame-proof explosion-proof housing outer wall.
Further, described envelope madial wall contacts with flame-proof explosion-proof housing outer wall, and top and flame-proof explosion-proof housing top outer wall are provided with cavity.
Further, be provided with the space between described envelope madial wall and top and the flame-proof explosion-proof housing outer wall.
Further, the bottom surface shutoff of described flame-proof explosion-proof housing is and the sheet material of flame-proof explosion-proof housing with material bottom the flame-proof explosion-proof housing sidewall, through clamping or heat-sealing or glue envelope, to realize shutoff.
Further, the bottom surface shutoff of described flame-proof explosion-proof housing is the sealing shutoff.
Further, the end face of described flame-proof explosion-proof housing is provided with the through hole that diameter is not more than the insulation quartz sand.
Adopt the beneficial effect of technique scheme to be:
1, under the situation of existing piezo-resistance power and constancy of volume, this piezo-resistance shared area in circuit board is less.
2, improved the flame-proof explosion-proof performance of existing flame-retardant and explosion-proof voltage dependent resistor.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is the cross-sectional view of flame-proof explosion-proof housing of the present invention when the envelope indoor design;
Cross-sectional view when Fig. 3 is neat mouthful of design of flame-proof explosion-proof housing of the present invention and envelope;
Cross-sectional view when Fig. 4 is close to for flame-proof explosion-proof housing of the present invention and envelope inner wall section;
In the accompanying drawing, the list of parts of each label representative is following:
Flame-proof explosion-proof housing 1, envelope 2, quartz sand 3, piezo-resistance 4, pin 5, pin bores 6, through hole 7.
Embodiment
Below in conjunction with accompanying drawing and the preferred specific embodiment of the present invention content of the present invention is done explanation further.Institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Like Fig. 1, shown in 2; The present invention is a kind of high anti-overflow overvoltage protector; It comprises piezo-resistance 4 and is arranged on the flame-proof explosion-proof housing 1 outside the piezo-resistance 4; Said flame-proof explosion-proof housing 1 is the cylindrical structural of bottom opening, and piezo-resistance 4 is provided with along the cylindrical structural center line, and two pins 5 of piezo-resistance 4 are drawn by two pin bores 6 shutoff of the bottom surface of the bottom surface circular open that is plugged in cylindrical housings.
Certainly, in order to improve the flame-proof explosion-proof performance of existing high anti-overflow overvoltage protector, can be filled with in the inwall of described flame-proof explosion-proof housing 1 and the space between piezo-resistance 4 outer walls that powder is not fired in insulation or the fireproof fibre that insulate.Powder is not fired in said insulation can adopt quartz sand 3 analogs such as grade.Said insulation fireproof fibre can be glass fiber or other fireproof fibre etc.
Improve the flame-proof explosion-proof performance of existing high anti-overflow overvoltage protector; Other a kind of mode of the present invention can be at said flame-proof explosion-proof housing 1; Be provided with through hole 7, through hole 7 can be that circular hole also can be a square hole, and the diameter of through hole 7 is not more than the diameter of insulation quartz sand.The blast really on fire of piezo-resistance 4 in flame-proof explosion-proof housing 1 causes when voltage rise is high in the flame-proof explosion-proof housing 1, can be through through hole 7 with in the space between gaseous emission to flame-proof explosion-proof housing 1 and the envelope 2; Or when flame-proof explosion-proof housing 1 explosion time; Because the protection of its outside envelope 2 is arranged, can not cause whole blast, can only make piezo-resistance produce blast in the inside of envelope 2; Can not cause the on fire of circuit board, and other components and parts that damage circuit board.In order better to realize this effect; Be like Fig. 2,3, shown in 4 with the structural design between flame-proof explosion-proof housing 1 and the envelope 2 among the present invention; Mainly be the inside that is arranged at envelope 2 that flame-proof explosion-proof housing 1 is whole among Fig. 2, make between the outer wall of madial wall and top and flame-proof explosion-proof housing 1 of envelope 2 and be provided with the space; Among Fig. 3 mainly be with flame-proof explosion-proof housing 1 whole be arranged at envelope 2 inside; Also make between the outer wall of madial wall and top and flame-proof explosion-proof housing 1 of envelope 2 and be provided with the space, but the opening part of the bottom opening place of this flame-proof explosion-proof housing 1 and envelope 2 is arranged at place, same plane simultaneously; Among Fig. 4 mainly be with flame-proof explosion-proof housing 1 whole be arranged at envelope 2 inside, the madial wall of envelope 2 is contacted with the outer wall of flame-proof explosion-proof housing 1, the top outer wall of top and flame-proof explosion-proof housing 1 is provided with cavity.
For the ease of producing; The bottom surface shutoff of described flame-proof explosion-proof housing 1 can be the sheet material with flame-proof explosion-proof housing 1 equivalent material, can pass through the snap fit clamping of dop and buckle with flame-proof explosion-proof housing 1 sidewall bottom or pass through the form shutoff of high temperature heat-sealing or the glue shutoff of use insulating property (properties).
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. one kind high anti-overflow overvoltage protector; It comprises piezo-resistance (4) and is arranged on the outer flame-proof explosion-proof housing (1) of piezo-resistance (4); Its characteristic is: said flame-proof explosion-proof housing (1) is the cylindrical structural of bottom opening; Piezo-resistance (4) is provided with along the cylindrical structural center line, and piezo-resistance (4) pin (5) is drawn by the bottom surface shutoff of the bottom surface circular open that is plugged in cylindrical housings; In the inwall of said flame-proof explosion-proof housing (1) and the space between piezo-resistance (4) outer wall, be filled with insulation quartz sand (3).
2. high anti-overflow overvoltage protector according to claim 1 is characterized in that: the outside of described flame-proof explosion-proof housing (1) is provided with an envelope (2).
3. high anti-overflow overvoltage protector according to claim 2 is characterized in that: described envelope (2) madial wall and top contact with flame-proof explosion-proof housing (1) outer wall.
4. high anti-overflow overvoltage protector according to claim 2 is characterized in that: described envelope (2) madial wall contacts with flame-proof explosion-proof housing (1) outer wall, and top and flame-proof explosion-proof housing (1) top outer wall are provided with cavity.
5. high anti-overflow overvoltage protector according to claim 2 is characterized in that: be provided with the space between described envelope (2) madial wall and top and flame-proof explosion-proof housing (1) outer wall.
6. high anti-overflow overvoltage protector according to claim 1 and 2; It is characterized in that: the bottom surface shutoff of described flame-proof explosion-proof housing (1) is and the sheet material of flame-proof explosion-proof housing (1) with material; Bottom flame-proof explosion-proof housing (1) sidewall,, realize shutoff through clamping or heat-sealing or glue envelope.
7. high anti-overflow overvoltage protector according to claim 1 and 2 is characterized in that: the bottom surface shutoff of described flame-proof explosion-proof housing (1) is the sealing shutoff.
8. according to claim 4 or 5 described high anti-overflow overvoltage protectors, it is characterized in that: the end face of described flame-proof explosion-proof housing (1) is provided with the through hole (7) that diameter is not more than the insulation quartz sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102354726A CN102709013A (en) | 2012-07-09 | 2012-07-09 | High overcurrent and overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102354726A CN102709013A (en) | 2012-07-09 | 2012-07-09 | High overcurrent and overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102709013A true CN102709013A (en) | 2012-10-03 |
Family
ID=46901700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102354726A Pending CN102709013A (en) | 2012-07-09 | 2012-07-09 | High overcurrent and overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102709013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219112A (en) * | 2013-04-18 | 2013-07-24 | 广东明家科技股份有限公司 | Fireproof and explosion-proof varistor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2316847A1 (en) * | 1973-04-04 | 1974-10-17 | Crl Electronic Bauelemente | METHOD FOR MANUFACTURING GLAZED FILM RESISTORS AND THEREFORE MANUFACTURED ELECTRICAL RESISTOR |
| CN2706839Y (en) * | 2004-05-28 | 2005-06-29 | 李炬 | Varistor with arc-extinguishing fire-resistance function |
| CN101174498A (en) * | 2006-11-01 | 2008-05-07 | 李炬 | Easily manufactured arc-extinguishing flame-resistant explosion-proof type piezoresistor |
| CN201489930U (en) * | 2009-08-07 | 2010-05-26 | 深圳市辰驹电子科技有限公司 | Clamp connection type anti-surge lightning arrester |
| CN202796292U (en) * | 2012-07-09 | 2013-03-13 | 深圳市辰驹电子科技有限公司 | High overflowing and overvoltage preventing protector |
-
2012
- 2012-07-09 CN CN2012102354726A patent/CN102709013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2316847A1 (en) * | 1973-04-04 | 1974-10-17 | Crl Electronic Bauelemente | METHOD FOR MANUFACTURING GLAZED FILM RESISTORS AND THEREFORE MANUFACTURED ELECTRICAL RESISTOR |
| CN2706839Y (en) * | 2004-05-28 | 2005-06-29 | 李炬 | Varistor with arc-extinguishing fire-resistance function |
| CN101174498A (en) * | 2006-11-01 | 2008-05-07 | 李炬 | Easily manufactured arc-extinguishing flame-resistant explosion-proof type piezoresistor |
| CN201489930U (en) * | 2009-08-07 | 2010-05-26 | 深圳市辰驹电子科技有限公司 | Clamp connection type anti-surge lightning arrester |
| CN202796292U (en) * | 2012-07-09 | 2013-03-13 | 深圳市辰驹电子科技有限公司 | High overflowing and overvoltage preventing protector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219112A (en) * | 2013-04-18 | 2013-07-24 | 广东明家科技股份有限公司 | Fireproof and explosion-proof varistor |
| CN103219112B (en) * | 2013-04-18 | 2015-12-02 | 广东明家科技股份有限公司 | A kind of fire-proof and explosion-proof type piezo-resistance |
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Application publication date: 20121003 |