CN202940581U - Novel protection assembly constituted by discharging mechanism and piezoresistor - Google Patents
Novel protection assembly constituted by discharging mechanism and piezoresistor Download PDFInfo
- Publication number
- CN202940581U CN202940581U CN 201220452802 CN201220452802U CN202940581U CN 202940581 U CN202940581 U CN 202940581U CN 201220452802 CN201220452802 CN 201220452802 CN 201220452802 U CN201220452802 U CN 201220452802U CN 202940581 U CN202940581 U CN 202940581U
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- piezo
- resistance
- piezoresistor
- discharging mechanism
- discharge mechanism
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Abstract
The utility model relates to the technical field of electrical parts, and particularly relates to a novel protection assembly constituted by a discharging mechanism and a piezoresistor. The novel protection assembly comprises a packaging shell, a first lead, a first electrode layer, the piezoresistor, the discharging mechanism and a second lead, wherein the first lead, the first electrode layer, the piezoresistor, the discharging mechanism and the second lead are arranged inside the packaging shell and arranged sequentially from the bottom up. The discharging mechanism comprises a second electrode layer, an insulating gasket and a metal conducting layer which are arranged sequentially from the bottom up, wherein the insulating gasket and the second electrode layer are sealed through a sealant therebetween, the insulating gasket and the metal conducting layer are sealed through the sealant therebetween, and a space formed by the second electrode layer, the insulating gasket and the metal conducting layer is filled with a protective gas. The novel protection assembly constituted by the discharging mechanism and the piezoresistor has the advantages of function of overvoltage protection, ability of effectively preventing the piezoresistor from losing effectiveness because of degradation, long service life, convenient processing, low cost and the like.
Description
Technical field
The utility model relates to the electric components technical field, particularly a kind of novel protected assembly that is made of discharge mechanism and piezo-resistance.
Background technology
Traditional circuit protection system is generally piezo-resistance or gas discharge tube is installed on the line, in order to the abnormal electrical power supply protective circuit occurring, anti-electric line or electrical equipment damage.Traditional piezo-resistance generally comprises: the piezo-resistance main body, its upper and lower surface respectively has a conductive electrode face, and the copper cash (being generally tinned wird) of burn-oning on electrode surface, and apply epoxy powder in skin, use as moistureproof, insulation, its operation principle is: utilize the crystal boundary phenomenon of piezo-resistance main body, to circuit two ends carrying out work.Therefore, during its work, the piezo-resistance main body of the functional unit of must generation current flowing through can be carried out its groundwork.Simultaneously, when using separately the piezo-resistance protective circuit, piezo-resistance can be because continuing to be subjected to the progressively deteriorated and inefficacy of stress of supply voltage; Perhaps when high frequency uses, because producing short circuit, capacitive reactance decline causes losing efficacy; Also may be progressively deteriorated due to the interference of supply voltage shakiness or external surging energy, finally burnt.
Traditional gas discharge tube general structure is: at the inner discharge prevention gas of enclosing of metallized earthenware, and be coated with the electrode of electronic powder in earthenware two ends welding; This gas discharge tube is bordering on insulation before not starting, after startup, discharging current rises, but both end voltage descends, and reaches the protection to the surging energy; Its shortcoming is: very little because of impedance between its two end electrodes after gas discharge tube starts, " afterflow " problem is arranged, thereby the resistive assembly of tool that usually needs to connect (such as piezo-resistance, resistance etc.) solves its " afterflow " problem.Simultaneously, when also having the gas discharge pipe manufacturer, must use high temperature furnace to carry out the weak points such as welding of electrode and weld tabs.
Therefore, how a kind of brand-new more excellent product of performance is transformed or developed to the available circuit resist technology and just become one of focus of research.
The utility model content
Deficiency for above-mentioned prior art existence; the purpose of this utility model is to provide a kind of novel protected assembly that is made of discharge mechanism and piezo-resistance, has over-voltage protection function, effectively prevents that piezo-resistance was because the advantage such as deterioratedly losing efficacy, long service life, processing facility, cost are lower.
To achieve these goals, the technical scheme that adopts of the utility model is:
A kind of novel protected assembly that is made of discharge mechanism and piezo-resistance comprises package casing and is located at that described package casing is inner, tactic the first lead-in wire, the first electrode layer, piezo-resistance, discharge mechanism and second go between successively from the bottom up.
Enter a ground; described discharge mechanism comprises from the bottom up tactic the second electrode lay, insulating washer, metal conducting layer successively; pass through sealant sealing between described insulating washer and described the second electrode lay; by sealant sealing, be filled with protective gas in the space that described the second electrode lay, insulating washer and metal conducting layer consist of between described insulating washer and described metal conducting layer.
Enter a ground, described piezo-resistance is mono-layer oxidized zinc ceramic body.
Enter a ground, described fluid sealant is polymer sealant.
The utility model can utilize the high impedance of discharge mechanism when voltage is normal, separate piezo-resistance and power supply, makes the leakage current of piezo-resistance be bordering on zero; In the time of so can avoiding generally single use piezo-resistance protection, piezo-resistance can be because continuing to be subjected to the progressively deteriorated and inefficacy of stress of supply voltage; Be disturbed or during High Abnormal Pressure at power supply, discharge mechanism can start conducting because of surge voltage, make piezo-resistance also start thereupon, utilizes the impedance fast-descending of piezo-resistance, produces transient high-current.And remove incorrect energy by the heat energy that produces surge voltage is suppressed to get off, when making overvoltage produce, can protective circuit.
The utility model utilization merges the mode of shared electrode, and at room temperature carries out bondingly with polymer sealant, when avoiding traditional gas discharge pipe manufacturer, must use high temperature furnace to carry out the welding of electrode and weld tabs; And save general cost, activity duration and spatial volume when using two independent assemblies of piezo-resistance series connection gas discharge tube, can save cost.
The utility model only need suitably be adjusted the piezo-resistance starting resistor, and discharge in-house protective gas, gap length, electrode material, can reach the defencive function when different voltages use.Simultaneously, the utility model can overcome traditional pressure sensitive resistance when high frequency uses, and produces short circuit and causes the problem that lost efficacy because capacitive reactance descends, and can still can keep normal defencive function when high frequency uses.Due to piezo-resistance can because of supply voltage or external surging energy progressively deteriorated; finally may burn; and the utility model is due to the isolation that discharge mechanism is arranged; even piezo-resistance is progressively deteriorated and destroy; but its integral body is still open-circuit condition; in the time of can avoiding traditional pressure sensitive resistance to lose efficacy, the short circuit problem that may occur has stronger protective capability and trustworthiness.The utlity model has over-voltage protection function, effectively prevent piezo-resistance because of deterioratedly lost efficacy, long service life, the advantage such as processing is convenient, cost is lower.
Description of drawings
Fig. 1 is the structural representation of looking up after removal package casing of the present utility model;
Fig. 2 is the plan structure schematic diagram after removal package casing of the present utility model;
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2.
In figure:
1, the first lead-in wire; 2, the first electrode layer; 3, piezo-resistance; 4, the second electrode lay;
5, insulating washer; 6, metal conducting layer; 7, the second lead-in wire.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment, see that Fig. 1 is to shown in Figure 3:
a kind of novel protected assembly that is consisted of by discharge mechanism and piezo-resistance described in the utility model, comprise package casing and be located at described package casing inner, tactic first go between 1 successively from the bottom up, the first electrode layer 2, piezo-resistance 3, discharge mechanism and the second lead-in wire 7, described discharge mechanism comprises from the bottom up tactic the second electrode lay 4 successively, insulating washer 5, metal conducting layer 6, seal by polymer sealant between described insulating washer 5 and described the second electrode lay 4, seal by polymer sealant between described insulating washer 5 and described metal conducting layer 6, described the second electrode lay 4, be filled with protective gas in the space that insulating washer 5 and metal conducting layer 6 consist of, described piezo-resistance is mono-layer oxidized zinc ceramic body.
Operation principle of the present utility model is: when voltage is normal, can utilize the high impedance of discharge mechanism, separate piezo-resistance and power supply, make the leakage current of piezo-resistance be bordering on zero; But when voltage is disturbed or responds to when abnormal, be that 1 pair second, described the first lead-in wire lead-in wire 7 two ends are when having abnormally high-voltage to occur, the discharge working region take described the second electrode 4 and conductive metal layer 6 lower surfaces as benchmark just starts, and makes electric current through between described the second electrode 4 and conducting metal flaggy 6 lower surfaces; This abnormal overvoltage makes described mono-layer oxidized zinc ceramic body 3 start again, and the impedance of the described zinc oxide ceramics body 3 of fast reducing, makes the instantaneous large-current circulation, then removes the energy of this abnormal overvoltage with heating system.Described discharge mechanism just as gas discharge tube be connected on piezo-resistance, do not start under the normal voltage condition, when abnormal voltage is arranged with regard to conducting, make described piezo-resistance 3 begin action, described discharge mechanism is just as switch, as long as there is abnormal voltage to occur, described discharge mechanism just starts conducting; And when normal voltage, described discharge mechanism is bordering on again open circuit, isolates described piezo-resistance 3 and power supply, avoids described piezo-resistance 3 to be subjected to the effect of voltage stress and to reduce its life-span; Abnormal voltage in the past after, because described piezo-resistance 3 has certain impedance, can assist the electric current of described discharge mechanism to drop to zero, and avoid described discharge mechanism appearance " afterflow " problem; If when described piezo-resistance 3 lost efficacy, no matter be burn or bore a hole, all can allow air enter described discharge mechanism, make protective gas be replaced by air, thereby rise the starting resistor of the described mechanism of discharging, the harm of avoiding follow-up electric leakage to bring.
The above is only better embodiment of the present utility model, therefore all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (3)
1. novel protected assembly that is consisted of by discharge mechanism and piezo-resistance, it is characterized in that: comprise package casing and be located at described package casing inner, from the bottom up successively tactic first the lead-in wire (1), the first electrode layer (2), piezo-resistance (3), discharge mechanism and the second lead-in wire (7), described discharge mechanism comprises from the bottom up tactic the second electrode lay (4) successively, insulating washer (5), metal conducting layer (6), pass through sealant sealing between described insulating washer (5) and described the second electrode lay (4), pass through sealant sealing between described insulating washer (5) and described metal conducting layer (6), described the second electrode lay (4), be filled with protective gas in the space that insulating washer (5) and metal conducting layer (6) consist of.
2. the novel protected assembly that is made of discharge mechanism and piezo-resistance according to claim 1, it is characterized in that: described piezo-resistance (3) is mono-layer oxidized zinc ceramic body.
3. the novel protected assembly that is made of discharge mechanism and piezo-resistance according to claim 1, it is characterized in that: described fluid sealant is polymer sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452802 CN202940581U (en) | 2012-09-03 | 2012-09-03 | Novel protection assembly constituted by discharging mechanism and piezoresistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452802 CN202940581U (en) | 2012-09-03 | 2012-09-03 | Novel protection assembly constituted by discharging mechanism and piezoresistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940581U true CN202940581U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220452802 Expired - Fee Related CN202940581U (en) | 2012-09-03 | 2012-09-03 | Novel protection assembly constituted by discharging mechanism and piezoresistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940581U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952570A (en) * | 2014-03-27 | 2015-09-30 | 深圳市槟城电子有限公司 | Piezoresistor of integrated gas discharge tube |
| CN105957788A (en) * | 2016-06-03 | 2016-09-21 | 深圳市槟城电子有限公司 | Composite gas discharge tube |
| CN107170540A (en) * | 2017-05-15 | 2017-09-15 | 隆科电子(惠阳)有限公司 | A kind of strong FDMOV components of long weatherability of service life |
| CN108766844A (en) * | 2018-07-27 | 2018-11-06 | 覃兆珍 | A kind of three-phase Thermal protection overvoltage component |
-
2012
- 2012-09-03 CN CN 201220452802 patent/CN202940581U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952570A (en) * | 2014-03-27 | 2015-09-30 | 深圳市槟城电子有限公司 | Piezoresistor of integrated gas discharge tube |
| CN105957788A (en) * | 2016-06-03 | 2016-09-21 | 深圳市槟城电子有限公司 | Composite gas discharge tube |
| CN105957788B (en) * | 2016-06-03 | 2024-03-29 | 深圳市槟城电子股份有限公司 | Composite gas discharge tube |
| CN107170540A (en) * | 2017-05-15 | 2017-09-15 | 隆科电子(惠阳)有限公司 | A kind of strong FDMOV components of long weatherability of service life |
| CN108766844A (en) * | 2018-07-27 | 2018-11-06 | 覃兆珍 | A kind of three-phase Thermal protection overvoltage 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: 20130515 Termination date: 20160903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |