CN103000317B - A kind of safe varistor - Google Patents
A kind of safe varistor Download PDFInfo
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- CN103000317B CN103000317B CN201210558002.3A CN201210558002A CN103000317B CN 103000317 B CN103000317 B CN 103000317B CN 201210558002 A CN201210558002 A CN 201210558002A CN 103000317 B CN103000317 B CN 103000317B
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Abstract
The invention discloses a kind of safe varistor.It comprises piezo-resistance and is arranged on the flame-proof explosion-proof housing outside piezo-resistance.It is characterized in that being provided with bayonet socket in outside the latter half of lid; Inside the top groove of shell, be provided with an annular groove, it mutually can fasten with the bayonet socket of lid and be integrated; Bottom the top groove of shell, be also provided with axis hole, steam vent, air discharge duct, axle reference column, top is in the enclosure provided with two cylindricality locating pieces in addition; Axle stretches to inside on outer casing groove top along axis hole, and fastens be integrated with spring, pad.The spring automatic exhaust device that the present invention adopts, when blasting, in housing, voltage rise is high, and exhaust apparatus is opened automatically, and gases at high pressure are discharged in housing, thus avoid housing distortion occurring or breaking, after gas is drained, when in housing, external pressure is consistent, exhaust apparatus cuts out automatically, can Moisture-proof corrosion-proof, thus effectively can extend life of product.
Description
Technical field
The present invention relates to a kind of electronic devices and components, particularly relate to a kind of safe varistor, belong to piezo-resistance preparing technical field.
Background technology
Along with the development of electronic information technology, piezo-resistance is widely used in the various low-voltage equipment such as communication apparatus, electrical equipment.Under abnormal overvoltage, piezo-resistance forms nonlinear change with executing alive change due to himself resistance value, thus effectively can protect low-voltage equipment.At present, the encapsulating structure of safe varistor is roughly divided into four large classes: a class is self Explosion-proof Design structure, and as patent CN101620901A, this kind ofly manufacture and design complex procedures, production cost is high, one class is the safety anti-explosive design of band fusible link, and as patent CN 2457706Y, CN101079341A etc., this kind of design is once heavy current impact, and fuse ruptures, and rate of recycling is low, one class is the encapsulating structure with plastics gum cover, and as patent CN 102623117 A, CN 202563999 U etc., this kind ofly to manufacture and design conveniently, cost is low, but easily affects the life-span by the change of ambient humidity, one class is with casing packing structure, as patent CN 2681296Y, CN 202008890 U, CN2706840Y, CN201707986U, CN2821812Y, CN201060710Y, CN2821811Y, CN202230816U, CN102237161 A, CN1828786A, CN102354592A, CN1917100A, this kind of design comparison is popular, but great majority design has lacked exhaust apparatus, when overcurrent is passed through, piezo-resistance local produces high temperature, thus cause gas in shell sharply to expand, air pressure raises, thus make casing deformation, affect life of product, although some patent has exhaust outlet, but the plugging film structure all adopted, once Exhaust Open, just be difficult to sealing, moistureproof.Thus can also improve above-mentioned art solutions.
Summary of the invention
The object of the present invention is to provide a kind of safe varistor, by adopting the design of spring automatic exhaust device, prepare a kind of structural safety, easy to process, moisture-proof anticorrosive performance is good, be applicable to the safe varistor of mass industrialized production, overcome prior art in varistor housing, produce gases at high pressure after can not very well the deficiency that gases at high pressure are discharged.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of safe varistor, comprises piezo-resistance, and two extraction electrodes and the cross section be arranged on outside piezo-resistance are the oval tubular flame-proof explosion-proof housing that arc lines build; Described flame-proof explosion-proof housing comprises lid, axle, shell, spring, pad and base, it is characterized in that being provided with bayonet socket in outside the latter half of lid; Inside the top groove of shell, be provided with an annular groove, it mutually can fasten with the bayonet socket of lid and be integrated; Bottom the top groove of shell, be also provided with axis hole, steam vent, air discharge duct, axle reference column, top is in the enclosure provided with two cylindricality locating pieces in addition; Axle stretches to inside on outer casing groove top along axis hole, and fastens be integrated with spring, pad.
What the present invention adopted is the design of spring automatic exhaust device, when generation big current passes through or explosion time, its Stability Analysis of Structures, in housing, voltage rise is high, exhaust apparatus is opened automatically, gases at high pressure are discharged in housing, thus avoid housing distortion occurring or breaking, after gas is drained, when in housing, external pressure is consistent, exhaust apparatus cuts out automatically, can Moisture-proof corrosion-proof, thus effectively can extend life of product.
The present invention has the following advantages:
1. what the present invention adopted is spring automatic exhaust device, when blasting, and its Stability Analysis of Structures, in housing, voltage rise is high, exhaust apparatus is opened automatically, and gases at high pressure are discharged in housing, thus avoids housing distortion occurring or breaking, after gas is drained, when in housing, external pressure is consistent, exhaust apparatus cuts out automatically, can Moisture-proof corrosion-proof, thus effectively can extend life of product, increase the security performance of product;
2. structure of the present invention is simple, and easy to process, production efficiency is high, is applicable to mass industrialized production.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 decomposition texture schematic diagram.
Fig. 2 is that the embodiment of the present invention 1 combines rear forward sight longitudinal profile schematic diagram.
Fig. 3 is that the embodiment of the present invention 1 combines rear left and looks longitudinal profile schematic diagram.
Fig. 4 is the embodiment of the present invention 1 shell 23 vertical view.
In figure: piezo-resistance 1, housing 2, piezo-resistance first extraction electrode 11, piezo-resistance second extraction electrode 12, lid 21, axle 22, shell 23, spring 24, pad 25, base 26, bayonet socket 211,212,213 and 214, annular groove 231, axis hole 232, steam vent 233,234,235,236,237 and 238, air discharge duct 239,23A, 23B, 23C, 23D and 23E, axle reference column 23F, cylindricality locating piece 23G and 23H.
Embodiment
Below in conjunction with embodiment, the invention will be further described.It is pointed out that according to technical scheme of the present invention, under the prerequisite not departing from the claims in the present invention, some distortion and improvement can also be made, all belong to protection scope of the present invention.
embodiment 1
A kind of safe varistor, as shown in Figure 1, Figure 2 and Figure 3, it comprises piezo-resistance 1 and is arranged on the flame-proof explosion-proof housing 2 outside piezo-resistance; To be cross sections be described flame-proof explosion-proof housing 2 that arc lines build is similar to oval cylindrical shell, it by lid 21, axle 22, shell 23(as shown in Figure 4), spring 24, pad 25 and base 26 form; Bayonet socket 211,212,213 and 214 is provided with in outside the latter half of lid 21; Inside the top groove of shell 23, be provided with an annular groove 231, it mutually can fasten with the bayonet socket 211,212,213 and 214 of lid 21 and be integrated; Bottom the top groove of shell 23, be also provided with axis hole 232, steam vent 233,234,235,236,237 and 238, air discharge duct 239,23A, 23B, 23C, 23D and 23E, axle reference column 23F, the top in addition in shell 23 is provided with two cylindricality locating piece 23G and 23H; Axle 22 stretches to inside on shell 23 groove top along axis hole 232, and fastens be integrated with spring 24, pad 25; Two extraction electrodes 11 and 12 of described piezo-resistance 1 extend outside base 26; Described shell 23 and base 26 adopt fluid sealant compact siro spinning technology.
When generation big current passes through or explosion time, in shell 23, voltage rise is high, spring 24 compression, axle 22 is along axis hole 232 and axle reference column 23F outwards movement, exhaust apparatus is opened automatically, gases at high pressure in shell are along steam vent 233, 234, 235, 236, 237 and 238, air discharge duct 239, 23A, 23B, 23C, 23D and 23E, the bottom of shell 23 groove and inner side are flowed out, when air release is complete, in shell 23, external pressure is consistent, spring 24 and axle 22 automatically restore to reset condition, exhaust apparatus cuts out, closed state is in housing, can Moisture-proof corrosion-proof, thus effectively can extend life of product, increase the security performance of product.
Claims (1)
1. a safe varistor, comprises piezo-resistance (1), two extraction electrodes (11,12) and be arranged on piezo-resistance (1) cross section be outward arc lines build oval tubular flame-proof explosion-proof housing (2); Described flame-proof explosion-proof housing (2) comprises lid (21), axle (22), shell (23), spring (24), pad (25) and base (26), it is characterized in that being provided with bayonet socket (211,212,213,214) in outside the latter half of lid (21); Inside the top groove of shell (23), be provided with an annular groove (231), it mutually can fasten with the bayonet socket of lid (21) (211,212,213,214) and be integrated; Bottom the top groove of shell (23), be also provided with axis hole (232), steam vent (233,234,235,236,237,238), air discharge duct (239,23A, 23B, 23C, 23D, 23E), axle reference column (23F), the top in addition in shell (23) is provided with two cylindricality locating pieces (23G, 23H); Axle (22) stretches to inside on the top groove top of shell (23) along axis hole (232), and fastens be integrated with spring (24), pad (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558002.3A CN103000317B (en) | 2012-12-20 | 2012-12-20 | A kind of safe varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558002.3A CN103000317B (en) | 2012-12-20 | 2012-12-20 | A kind of safe varistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103000317A CN103000317A (en) | 2013-03-27 |
| CN103000317B true CN103000317B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210558002.3A Active CN103000317B (en) | 2012-12-20 | 2012-12-20 | A kind of safe varistor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103000317B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345666A (en) * | 2021-06-17 | 2021-09-03 | 安徽知凸凸科技服务有限公司 | 110KV lightning arrester and lightning protection system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416578A (en) * | 2000-03-07 | 2003-05-07 | 泰科电子有限公司 | Overvoltage protection device including wafer of varistor material |
| CN1983470A (en) * | 2005-12-15 | 2007-06-20 | 雷伊卡普公司 | Overvoltage protection devices including wafer of pressure sensirive varistor material |
| CN203070846U (en) * | 2012-12-20 | 2013-07-17 | 广西新未来信息产业股份有限公司 | Safe pressure sensitive resistor |
-
2012
- 2012-12-20 CN CN201210558002.3A patent/CN103000317B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416578A (en) * | 2000-03-07 | 2003-05-07 | 泰科电子有限公司 | Overvoltage protection device including wafer of varistor material |
| CN1983470A (en) * | 2005-12-15 | 2007-06-20 | 雷伊卡普公司 | Overvoltage protection devices including wafer of pressure sensirive varistor material |
| CN203070846U (en) * | 2012-12-20 | 2013-07-17 | 广西新未来信息产业股份有限公司 | Safe pressure sensitive resistor |
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| Publication number | Publication date |
|---|---|
| CN103000317A (en) | 2013-03-27 |
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