CN203070846U - Safe pressure sensitive resistor - Google Patents
Safe pressure sensitive resistor Download PDFInfo
- Publication number
- CN203070846U CN203070846U CN2012207096904U CN201220709690U CN203070846U CN 203070846 U CN203070846 U CN 203070846U CN 2012207096904 U CN2012207096904 U CN 2012207096904U CN 201220709690 U CN201220709690 U CN 201220709690U CN 203070846 U CN203070846 U CN 203070846U
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- shell
- pressure sensitive
- sensitive resistor
- proof
- groove
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Abstract
The utility model discloses a safe pressure sensitive resistor. The safe pressure sensitive resistor comprises a pressure sensitive resistor body and an inflaming-retarding anti-explosion shell outside the pressure sensitive resistor body. The safe pressure sensitive resistor is characterized in that the lower half part at the outer side of a cover is provided with a bayonet, an annular groove is formed in the inner side of a top groove of the shell and can be integrated with the bayonet of the cover by buckling, the bottom of the top groove of the shell is further provided with a shaft hole, an exhaust hole, an exhaust trough and a shaft positioning pole, the top in the shell is provided with two cylindrical positioning blocks, a shaft is capable of extending inwards along the shaft hole at the upper part of the shell groove and is integrated with a spring and a gasket by buckling. By virtue of a spring type automatic exhaust device adopted by the resistor, in explosion, the inner pressure of the shell is raised, the exhaust device is automatically opened, and high-pressure gas is discharged from the shell so as to prevent the shell from deforming or breaking; and when the gas is exhausted, the inner pressure and the outer pressure of the shell are consistent, and the exhaust device is automatically closed. The safe pressure sensitive resistor is moisture-proof and corrosion-proof, and the service life of the resistor is effectively prolonged.
Description
Technical field
The utility model relates to a kind of electronic devices and components, relates in particular to a kind of safe type piezoresistor device, belongs to the piezo-resistance preparing technical field.
Background technology
Along with the continuous development of electronic information technology, piezo-resistance is widely used in the various low-voltage equipments such as communication apparatus, electrical equipment.Under abnormal overvoltage, piezo-resistance is because himself resistance value forms nonlinear change with the variation that applies voltage, thereby can effectively protect low-voltage equipment.At present, the encapsulating structure of safe type piezoresistor device roughly is divided into four big classes: a class is self explosion-proof project organization, and as patent CN101620901A, this class manufactures and designs complex procedures, the production cost height; One class is the safety anti-explosive design of band fusible link, as patent CN 2457706Y, CN101079341A etc., in case during this class design heavy current impact, the fuse fracture, the rate of recycling is low; One class is the encapsulating structure that has the plastics gum cover, and as patent CN 102623117 A, CN 202563999 U etc., this class manufactures and designs conveniently, and cost is low, but is subjected to the variation of extraneous humidity easily and influences the life-span; One class is to have the housing encapsulating structure, as patent CN 2681296Y, CN 202008890 U, CN2706840Y, CN201707986U, CN2821812Y, CN201060710Y, CN2821811Y, CN202230816U, CN102237161 A, CN1828786A, CN102354592A, CN1917100A, this class design is popular, but the great majority design has lacked exhaust apparatus, when overcurrent is passed through, the local high temperature that produces of piezo-resistance, thereby cause that gas sharply expands in the shell, air pressure raises, thereby make casing deformation, influence life of product, though some patent has exhaust outlet, in case the shutoff membrane structure that all adopts is during Exhaust Open, just be difficult to sealing, protection against the tide.Thereby can also improve above-mentioned patented technology scheme.
Summary of the invention
The purpose of this utility model is to provide a kind of safe type piezoresistor device, by adopting the design of spring automatic exhaust device, prepare a kind of structural safety, easy to process, the moisture-proof anticorrosive performance is good, the safe type piezoresistor device that is fit to mass industrialized production can not be fine the deficiency of gases at high pressure discharge after overcoming prior art produces gases at high pressure in the varistor housing.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of safe type piezoresistor device comprises piezo-resistance, and two extraction electrodes and the cross section that is arranged on outside the piezo-resistance are the oval tubular flame-proof explosion-proof housing that the arc lines make up; 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 the outside of lid the latter half; Be provided with an annular groove in the top groove inboard of shell, it can fasten mutually with the bayonet socket of lid and be one; Also be provided with axis hole, steam vent, air discharge duct, axle reference column in the top groove bottom of shell, top in the enclosure is provided with two cylindricality locating pieces in addition; Axle stretches to inside on outer casing groove top along axis hole, and is one with spring, pad fastening.
What the utility model adopted is the design of spring automatic exhaust device,, passes through or explosion time in big electric current its Stability Analysis of Structures, voltage rise height in the housing when taking place, exhaust apparatus is opened automatically, gases at high pressure are discharged in housing, thereby avoid taking place housing distortion or break, after gas has been arranged, when external pressure is consistent in the housing, exhaust apparatus cuts out automatically, can lose by moisture-proof anticorrosive, thereby can prolong life of product effectively.
The utlity model has following advantage:
1. what the utility model adopted is the spring automatic exhaust device, when blasting, and its Stability Analysis of Structures, voltage rise height in the housing, exhaust apparatus is opened automatically, and gases at high pressure are discharged in housing, thereby avoids taking place housing distortion or break, after gas has been arranged, when external pressure was consistent in the housing, exhaust apparatus cut out automatically, can lose by moisture-proof anticorrosive, thereby can prolong life of product effectively, increase the security of products energy;
2. the utility model is simple in structure, and is easy to process, and the production efficiency height is fit to mass industrialized production.
Description of drawings
Fig. 1 is the utility model embodiment 1 decomposition texture schematic diagram.
Fig. 2 is the utility model embodiment 1 combination back forward sight longitudinal profile schematic diagram.
Fig. 3 is that the longitudinal profile schematic diagram is looked on a left side, the utility model embodiment 1 combination back.
Fig. 4 is the utility model embodiment 1 shell 23 vertical views.
Among the 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
Be further described below in conjunction with the utility model of embodiment.It is pointed out that according to the technical solution of the utility model, under the prerequisite that does not break away from the utility model claim, can also make some distortion and improvement, all belong to protection range of the present utility model.
A kind of safe type piezoresistor device, as Fig. 1, Fig. 2 and shown in Figure 3, it comprises piezo-resistance 1 and is arranged on the outer flame-proof explosion-proof housing 2 of piezo-resistance; Described flame-proof explosion-proof housing 2 is that cross section is the oval cylindrical shell that is similar to that the arc lines make up, it by lid 21, axle 22, shell 23(as shown in Figure 4), spring 24, pad 25 and base 26 form; Be provided with bayonet socket 211,212,213 and 214 in the outside of lid 21 the latter half; Be provided with an annular groove 231 in the top groove inboard of shell 23, it can fasten mutually with the bayonet socket 211,212,213 and 214 of lid 21 and be one; Also be 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 in the top groove bottom of shell 23, the top in shell 23 is provided with two cylindricality locating piece 23G and 23H in addition; Axle 22 stretches to inside on shell 23 groove tops along axis hole 232, and fastens with spring 24, pad 25 and to be one; Two extraction electrodes 11 of described piezo- resistance 1 and 12 extend outside the base 26; Described shell 23 adopts fluid sealant closely to be connected with base 26.
When taking place, passes through or explosion time in big electric current, voltage rise height in the shell 23, spring 24 compressions, axle 22 is outwards mobile along axis hole 232 and axle reference column 23F, exhaust apparatus is opened automatically, gases at high pressure in the 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 grooves and inboard the outflow, when gas discharges when complete, external pressure unanimity in the shell 23, spring 24 and axle 22 automatically restore to reset condition, and exhaust apparatus cuts out, be in closed state in the housing, can lose by moisture-proof anticorrosive, thereby can prolong life of product effectively, increase the security of products energy.
Claims (1)
1. a safe type piezoresistor device comprises piezo-resistance (1), and two extraction electrodes (11,12) and the cross section that is arranged on outside the piezo-resistance (1) are the oval tubular flame-proof explosion-proof housing (2) that the arc lines make up; 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); Be provided with an annular groove (231) in the top groove inboard of shell (23), it can fasten mutually with the bayonet socket (211,212,213,214) of lid (21) and be one; Also be 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) in the top groove of shell (23) bottom, the top in shell (23) is provided with two cylindricality locating pieces (23G, 23H) in addition; Axle (22) stretches to inside on shell (23) groove top along axis hole (232), and is one with spring (24), pad (25) fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207096904U CN203070846U (en) | 2012-12-20 | 2012-12-20 | Safe pressure sensitive resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207096904U CN203070846U (en) | 2012-12-20 | 2012-12-20 | Safe pressure sensitive resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203070846U true CN203070846U (en) | 2013-07-17 |
Family
ID=48769610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207096904U Withdrawn - After Issue CN203070846U (en) | 2012-12-20 | 2012-12-20 | Safe pressure sensitive resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203070846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000317A (en) * | 2012-12-20 | 2013-03-27 | 广西新未来信息产业股份有限公司 | Safe varistor |
-
2012
- 2012-12-20 CN CN2012207096904U patent/CN203070846U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000317A (en) * | 2012-12-20 | 2013-03-27 | 广西新未来信息产业股份有限公司 | Safe varistor |
| CN103000317B (en) * | 2012-12-20 | 2015-08-05 | 广西新未来信息产业股份有限公司 | A kind of safe varistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20150805 |
|
| RGAV | Abandon patent right to avoid regrant |