CN202917272U - Explosion-proof insulation sheath for piezoresistor - Google Patents
Explosion-proof insulation sheath for piezoresistor Download PDFInfo
- Publication number
- CN202917272U CN202917272U CN 201220545950 CN201220545950U CN202917272U CN 202917272 U CN202917272 U CN 202917272U CN 201220545950 CN201220545950 CN 201220545950 CN 201220545950 U CN201220545950 U CN 201220545950U CN 202917272 U CN202917272 U CN 202917272U
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- Prior art keywords
- explosion
- piezo
- resistance
- proof isolation
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an explosion-proof insulation sheath for a piezoresistor. The explosion-proof insulation sheath comprises a piezoresistor and an explosion-proof insulation casing. The piezoresistor is arranged in the explosion-proof insulation casing, and an electrode of the piezoresistor penetrates through the bottom of the casing and stretches to the outer side of the casing; an opening is formed in the bottom of the explosion-proof insulation casing; at least one air hole is formed in the lateral wall of the explosion-proof insulation casing; the explosion-proof insulation casing and the piezoresistor are bounded together through an insulation paste; and the explosion-proof insulation casing is molded by a high temperature ceramic material through one-time sintering.
Description
Technical field
The utility model relates to a kind of electronic devices and components manufacturing technology field, particularly a kind of explosion-proof isolation type piezo-resistance.
Background technology
Piezo-resistance is that a kind of voltage-current characteristic is nonlinear voltage sensitive element, and under the normal voltage condition, piezo-resistance only is equivalent to a capacitor; When overvoltage appearred in circuit, the internal resistance of piezo-resistance sharply descended and rapidly conducting.Therefore, the key element of piezo-resistance Chang Zuowei Surge Protector is widely used in the household electrical appliance such as TV, refrigerator, air-conditioning, washing machine.Piezo-resistance can be along with the increase of surge impact number of times deteriorated and ultimate failure gradually, the piezo-resistance that lost efficacy is usually expressed as short circuit, temperature significantly rises and may explode, near the components and parts the spark that explosion time ejects may ignite, thus cause fire.In order to prevent this potential safety hazard, piezo-resistance itself has certain anti-flammability usually, and part producer provides the piezo-resistance of outsourcing plastic sheath.But resistance to elevated temperatures and the fire resistance of plastic sheath are relatively poor, can not effectively solve the safety problems such as burning that may occur.
Summary of the invention
For solving above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of explosion-proof isolation type piezo-resistance, and simple in structure, easy to process, good flame retardation effect, good heat conduction effect are fit to large-scale industrial production.
The scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of piezo-resistance of explosion-proof isolation comprises piezo-resistance and explosion-proof isolation housing, and piezo-resistance is arranged in the explosion-proof isolation housing, and the electrode of piezo-resistance passes the bottom of housing and extends to outside; Described explosion-proof isolation housing bottom opening; At least one air vent hole that described explosion-proof isolation housing sidewall has; Described explosion-proof isolation housing and piezo-resistance bond together by insulating cement; Described explosion-proof isolation housing is the once sintered moulding of high temperature ceramic material.
The beneficial effects of the utility model: the utility model has adopted high temperature ceramic material as the explosion-proof isolation housing, and piezo-resistance can be effectively protected in the insulation of ceramic shell lightweight; The housing bottom opening also has air vent hole in housing sidewall, and the heat that has produced when having guaranteed pressure responsive resistor failure can be released into the external world fast, reduces the possibility of piezo-resistance blast; Housing can not burn, and can prevent that fragment and spark that the piezo-resistance explosion time produces from splashing, and can effectively prevent fires; Housing adopts once sintered moulding, is convenient to large-scale industrial production.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, piezo-resistance, 2, the explosion-proof isolation housing, 3, air vent hole.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, a kind of piezo-resistance of explosion-proof isolation, comprise that mainly piezo-resistance 1 and bottom are provided with the explosion-proof isolation housing 2 of opening 3, piezo-resistance 1 is bonded in the housing 2 by insulating cement, the electrode of piezo-resistance 1 passes housing 2 and extends to outside, the explosion-proof isolation housing sidewall has air vent hole 4, and housing 2 is the once sintered moulding of high temperature ceramic material.The bottom opening 3 of housing 2 and sidewall air vent hole 4 can keep the air of 2 of piezo-resistance and housings unobstructed, and when piezo-resistance 1 lost efficacy, the heat of generation was released into the external world by bottom opening 3 and sidewall air vent hole 4.If piezo-resistance 1 blast, fragment and spark that housing 2 can effectively avoid explosion time to produce splash.
Claims (5)
1. the explosion-proof isolation sheath of a piezo-resistance comprises piezo-resistance and explosion-proof isolation housing, and piezo-resistance is arranged in the explosion-proof isolation housing, and the electrode of piezo-resistance passes the bottom of housing and extends to outside.
2. the explosion-proof isolation sheath of a kind of piezo-resistance according to claim 1 is characterized in that: described explosion-proof isolation housing bottom opening.
3. the explosion-proof isolation sheath of a kind of piezo-resistance according to claim 1 is characterized in that: at least one air vent hole that described explosion-proof isolation housing sidewall has.
4. the explosion-proof isolation sheath of a kind of piezo-resistance according to claim 1, it is characterized in that: described explosion-proof isolation housing and piezo-resistance bond together by insulating cement.
5. the explosion-proof isolation sheath of a kind of piezo-resistance according to claim 1, it is characterized in that: described explosion-proof isolation housing is the once sintered moulding of high temperature ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545950 CN202917272U (en) | 2012-10-24 | 2012-10-24 | Explosion-proof insulation sheath for piezoresistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545950 CN202917272U (en) | 2012-10-24 | 2012-10-24 | Explosion-proof insulation sheath for piezoresistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917272U true CN202917272U (en) | 2013-05-01 |
Family
ID=48165561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220545950 Expired - Fee Related CN202917272U (en) | 2012-10-24 | 2012-10-24 | Explosion-proof insulation sheath for piezoresistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202917272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575562A (en) * | 2016-01-29 | 2016-05-11 | 太仓弘杉环保科技有限公司 | Corrosion-resistant and high-temperature resistant resistor box |
-
2012
- 2012-10-24 CN CN 201220545950 patent/CN202917272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575562A (en) * | 2016-01-29 | 2016-05-11 | 太仓弘杉环保科技有限公司 | Corrosion-resistant and high-temperature resistant resistor box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WHIRLPOOL (CHINA) CO., LTD. Free format text: FORMER NAME: HEFEI RONGSHIDA SANYO ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 230088 No. 96 science Avenue, hi tech Zone, Anhui, Hefei Patentee after: Whirlpool (China) Limited by Share Ltd Address before: 230088 No. 96 science Avenue, hi tech Zone, Anhui, Hefei Patentee before: Hefei Rongshida Sanyo Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |