CN203644485U - Explosion-proof pressure sensitive varistor - Google Patents
Explosion-proof pressure sensitive varistor Download PDFInfo
- Publication number
- CN203644485U CN203644485U CN201320866879.9U CN201320866879U CN203644485U CN 203644485 U CN203644485 U CN 203644485U CN 201320866879 U CN201320866879 U CN 201320866879U CN 203644485 U CN203644485 U CN 203644485U
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- explosion
- top cover
- spring
- proof
- proof casing
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Abstract
The utility model discloses an explosion-proof pressure sensitive varistor. The explosion-proof pressure sensitive varistor comprises an explosion-proof casing and a pressure sensitive varistor element which is arranged in the explosion-proof casing, wherein a top cover is arranged on the top of the explosion-proof casing, the top cover and the explosion-proof casing form movable connection through a top cover support arranged at one end of the top cover and a casing bayonet arranged in the explosion-proof casing, a spring upper support is arranged at the other end of the top cover, a spring lower support is arranged in the explosion-proof casing, and a spring for buckling the top cover and the explosion-proof casing tightly is connected between the spring upper support and the spring lower support. The top cover automatically opens to relieve pressure when explosion occurs in the explosion-proof casing and results in the rise of the pressure to a certain pressure, so that the deformation or cracking of the casing is avoided; the top cover automatically closes after gas is exhausted, so that the service life of the product is prolonged, and the safety of the product is increased; the explosion-proof pressure sensitive varistor has a simple structure and high production efficiency, and is convenient to manufacture and suitable for large-batch industrial production.
Description
Technical field
The utility model relates to a kind of electronic devices and components, relates in particular to a kind of anti-explosion type voltage dependent resistor, belongs to resistor preparing technical field.
Background technology
Along with electronic information technology high speed development; piezo-resistance has been widely used in electrical equipment, electronics, building, communication and military field as overvoltage protection device; play inhibition overvoltage surge, shunting surge current, protective circuit and device are avoided the effect of the damage of overvoltage surge.The failure mode of piezo-resistance is divided into short-circuit mode and open circuit mode.Short-circuit mode, can be divided into two types of ageing failure, temporary overvoltage destructions substantially, and short-circuit failure is the main cause that causes that piezo-resistance is on fire, easily causes household electrical appliance breaking out of fire accident.Another kind is open circuit mode, and it mainly occurs in piezo-resistance while flowing through the surge current that can bear far beyond oneself, and piezo-resistance body bursts.For said circumstances, people have taked series of measures to design a lot of safe type piezoresistor devices, and as CN 203070846 U etc., but these costs of goods manufactured are relatively high, and assembling product is more complicated, therefore can also make further improvements prior art.
Summary of the invention
The purpose of this utility model is, overcomes the deficiencies in the prior art, adopts spring valve automatic exhaust device, provides a kind of simple in structure, easy to assembly, is applicable to the anti-explosion type voltage dependent resistor of mass industrialized production.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of anti-explosion type voltage dependent resistor, comprise explosion-proof casing and be arranged on the piezoresistive element in explosion-proof casing, top at explosion-proof casing is provided with top cover, top cover forming alive connection with two housing bayonet sockets fastenings that are arranged in explosion-proof casing with explosion-resistant enclosure respectively by two top cover bearings that are arranged on top cover one end, the other end of top cover is provided with upper bracket of the spring, in explosion-proof casing, be provided with spring lower support, between upper bracket of the spring and spring lower support, be connected with the spring that top cover and explosion-proof casing are tightly fastened.
Take the following advantage of the utlity model has of above-mentioned measure:
1. what the utility model adopted is spring valve automatic exhaust device, and in the time blasting, housing air pressure raises, in the time arriving certain pressure, top cover is opened automatically, and gases at high pressure are released away from cover top portion, thereby avoids housing to deform or break, after gas is drained, due to the contraction reduction of spring, make top cover closed tightly, stop contacting of the interior piezoresistive element of shell and extraneous air, thereby can effectively extend life of product, increase the security performance of product;
2. the utility model is simple in structure, easily manufactured, and production efficiency is high, and applicable mass industrialized production.
Accompanying drawing explanation
Fig. 1 is the utility model structure assembling schematic diagram.
Fig. 2 is just cuing open schematic diagram after the utility model combination.
Fig. 3 is the utility model combination rear side generalized section.
In above-mentioned accompanying drawing, element sequence number is: piezoresistive element 1, top cover 2, spring 3, explosion-resistant enclosure 4, top cover bearing 21 and 22, upper bracket of the spring 23, spring lower support 41, housing bayonet socket 43, top cover fixed leg 24, housing fixed leg 42, extraction electrode 12.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, to make those skilled in the art can implement according to this with reference to specification word.
As shown in Figure 1, Figure 2 and Figure 3, the utility model comprises piezoresistive element 1 and is wrapped in the explosion-proof casing of piezoresistive element 1; Be provided with top cover 2 at the top of explosion-proof casing, on top cover 2, be provided with top cover bearing 21 and 22 towards the one side of explosion-resistant enclosure 4, the other end is provided with upper bracket of the spring 23, and centre is provided with top cover fixed leg 24.The position corresponding with top cover bearing 21 and 22, explosion-resistant enclosure 4 the insides is respectively arranged with housing bayonet socket 43 and another housing bayonet socket, the position corresponding with upper bracket of the spring 23 is provided with spring lower support 41, and the position corresponding with top cover fixed leg 24 is provided with housing fixed leg 42.Top cover 2 is lived and is connected with another housing bayonet socket fastening with the housing bayonet socket 43 being arranged in explosion-resistant enclosure 4 respectively by the top cover bearing 21 and 22 being arranged on top cover 2 with explosion-resistant enclosure 4, top cover 2 can take top cover bearing 21 and 22 and the tie point of housing bayonet socket as fulcrum, upwards open.The upper bracket of the spring 23 of top cover 2, and between explosion-resistant enclosure 4 inner spring undersettings 41, be connected with the spring 3 that top cover 2 and explosion-resistant enclosure 4 are tightly fastened.In the time that the pressure in explosion-proof casing is enough to overcome the pulling force of spring 3, pressure can make top cover 2 eliminate the pressure in explosion-proof casing with explosion-resistant enclosure 4 breakdowns.Top cover fixed leg 24 is fixed wtih piezoresistive element 1 with housing fixed leg 42, and two extraction electrodes of piezoresistive element 1 extend respectively outside explosion-resistant enclosure 4.
Operation principle of the present utility model is to flow through the surge current that can bear far beyond oneself when piezo-resistance, while blasting, explosion-proof casing internal gas pressure raises, in the time arriving certain pressure, when pressure has overcome the pulling force of spring 3, top cover 2 is opened under pressure automatically, gases at high pressure are released away, thereby avoid explosion-proof casing to deform or break, after gas is drained, due to the contraction reduction of spring 3, make top cover 2 closed tightly, stop contacting of the interior piezoresistive element 1 of explosion-proof casing and extraneous air, thereby can effectively extend life of product, increase the security performance of product.
Claims (1)
1. an anti-explosion type voltage dependent resistor, comprise explosion-proof casing and be arranged on the piezoresistive element in explosion-proof casing, it is characterized in that being provided with at the top of explosion-proof casing top cover (2), top cover (2) forming alive connection with the housing bayonet socket (43) and another housing bayonet socket fastening that are arranged in explosion-resistant enclosure (4) with explosion-resistant enclosure (4) respectively by the top cover bearing (21) and (22) that are arranged on top cover (2) one end, the other end of top cover (2) is provided with upper bracket of the spring (23), in explosion-resistant enclosure (4), be provided with spring lower support (41), between upper bracket of the spring (23) and spring lower support (41), be connected with the spring (3) that top cover (2) and explosion-resistant enclosure (4) are tightly fastened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866879.9U CN203644485U (en) | 2013-12-26 | 2013-12-26 | Explosion-proof pressure sensitive varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866879.9U CN203644485U (en) | 2013-12-26 | 2013-12-26 | Explosion-proof pressure sensitive varistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644485U true CN203644485U (en) | 2014-06-11 |
Family
ID=50875711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320866879.9U Expired - Fee Related CN203644485U (en) | 2013-12-26 | 2013-12-26 | Explosion-proof pressure sensitive varistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614639A (en) * | 2020-12-01 | 2021-04-06 | 辰硕电子(九江)有限公司 | MOV chip is with having explosion-proof pressure release's big module MOV installation component |
-
2013
- 2013-12-26 CN CN201320866879.9U patent/CN203644485U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614639A (en) * | 2020-12-01 | 2021-04-06 | 辰硕电子(九江)有限公司 | MOV chip is with having explosion-proof pressure release's big module MOV installation component |
| CN112614639B (en) * | 2020-12-01 | 2022-04-26 | 辰硕电子(九江)有限公司 | MOV chip is with having explosion-proof pressure release's big module MOV installation component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |