CN202840507U - Low residual voltage and high power frequency tolerance surge protector - Google Patents
Low residual voltage and high power frequency tolerance surge protector Download PDFInfo
- Publication number
- CN202840507U CN202840507U CN201220451925.4U CN201220451925U CN202840507U CN 202840507 U CN202840507 U CN 202840507U CN 201220451925 U CN201220451925 U CN 201220451925U CN 202840507 U CN202840507 U CN 202840507U
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- surge protector
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Abstract
The utility model discloses a low residual voltage and high power frequency tolerance surge protector which belongs to surge protectors and aims to provide the surge protector which has the advantages of low residual voltage and accurate and reliable heat separation even under high power frequency current. The surge protector comprises a pressure-sensitive lightningproof chip, a first external electrode which is electrically connected with the pressure-sensitive lightningproof chip and a second external electrode which is electrically connected with the pressure-sensitive lightningproof chip through a heat separation mechanism. The pressure-sensitive lightningproof chip (16) is encapsulated in an insulation box (17) whose surface is provided with a window (14), and the central area of the pressure-sensitive lightningproof chip (16) is exposed from the window (14). The heat separation mechanism comprises a spring sheet (10) of which one end is in welding joint with the central area of the pressure-sensitive lightningproof chip (16) and the other end is in fixed connection with the second external electrode (7). The surge protector provided by the utility model has the advantages of low residual voltage, strong high power frequency tolerance ability, accurate and reliable heat separation and the like, and can be widely applied to a variety of circuits.
Description
Technical field
The utility model relates to a kind of surge protector, relates in particular to a kind of low residual voltage, high power frequency tolerance surge protector.
Background technology:Surge protector is take the ZnO lightning-proof chip as main element, utilizes hot releasing mechanism to cut off a kind of Protector for using electricity of circuit; Be widely used in electronic circuit and electric power system.Usually, the impulse withstand voltage value of surge protector should be lower than the permission impulse withstand voltage value of protected object, therefore tends in actual applications select deboost and the low surge protector of pressure sensitive voltage; But then; the pressure sensitive voltage of varistor is higher; the probability that damages under Frequency Transient Overvoltage is just less, and the working life of bearing the power-supply system voltage stress is also longer, therefore tends to again the surge protector of selecting DC reference voltage high in application.Obviously, the requirement of these two aspects is conflicting.In actual applications, surge protector bears for a long time lightning impulse and can cause the insulation impedance of its lightning-proof chip to reduce, and the tolerance of power-frequency overvoltage is also decreased; Running in the situation such as the large or earth fault of network system voltage fluctuation, very easily punctured the flame initiation fire because of lightning-proof chip by power-frequency overvoltage, lead to serious consequence.This is the technical barrier that needs to be resolved hurrily at present, and the surge protector of therefore developing a kind of low residual voltage, high power frequency tolerance seems and is even more important.
Summary of the invention:For the defects that exists in the prior art, even if the utility model aims to provide a kind of also can have lower residual voltage and hot fast response time, the low residual voltage that reliability is high, the high power frequency tolerance surge protector of breaking away under higher power current.
To achieve these goals, the utility model by the following technical solutions: it comprises pressure-sensitive lightning-proof chip, the first external electrode that is electrically connected with this pressure-sensitive lightning-proof chip, passes through the second external electrode that hot releasing mechanism is electrically connected with this pressure-sensitive lightning-proof chip; Pressure-sensitive lightning-proof chip is encapsulated in the insulation booth that the surface is provided with window, and the middle section of pressure-sensitive lightning-proof chip exposes from window; Described hot releasing mechanism comprises an end and the spring leaf that the middle section of pressure-sensitive lightning-proof chip is welded to connect, the other end is fixedly connected with the second external electrode.
Described hot releasing mechanism also comprises the bearing pin that is fixed on the insulation booth, is located at the cut-out plate on this bearing pin and between insulation booth and spring leaf, the spring that will cut off the plate tension; Insulation booth is fixed in the shell, and the top margin of this shell is provided with corresponding to the position that cuts off plate and shows window, and this lower end that cuts off plate contacts with the thimble of sensitive switch; Shell and sensitive switch all are fixed in the base housing, and two junction blocks that are fixed in this base housing are electrically connected with the first external electrode, the second external electrode by connector respectively.
Compared with the prior art; the utility model is owing to adopted technique scheme; hot dispersal point is arranged on the middle section that pressure-sensitive lightning-proof chip is punctured by power-frequency overvoltage easily; hot dispersal point is overlapped with the position of the power frequency breakdown point of lightning-proof chip; therefore shortened hot conduction distance, not only guaranteed that surge protector can tolerate higher power current, but also improve the response speed that piezo-resistance heat breaks away from.In addition, because spring leaf has larger surface area, reduced the impedance under the surge current, thereby effectively reduced the residual voltage of surge protector.The 3rd, between spring leaf and pressure-sensitive lightning-proof chip, adopted the cut-out plate of holding with spring, when the low temperature melts soldering tin, cut off plate rapid cut-off loop under the effect of spring, heat breaks away from the reliability height.
Description of drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the perspective view after utility model is removed shell.
Among the figure: shell 1 base housing 2 the first external electrodes 3 springs 4 sensitive switches 5 thimbles 6 the second external electrodes 7 connectors 8 junction blocks 9 spring leafs 10 bearing pins 11 show that window 12 cuts off plate 13 windows 14 hot dispersal point 15 pressure-sensitive lightning-proof chip 16 insulation booths 17
Embodiment:The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Shown in Fig. 1～2: pressure-sensitive lightning-proof chip 16 is encapsulated in the insulation booth 17, and the middle section of this pressure-sensitive lightning-proof chip exposes from window 14; Be provided with hot releasing mechanism on the surface of insulation booth 17, this hot releasing mechanism is welded on middle section, the other end of pressure-sensitive lightning-proof chip 16 by an end by low melting point scolding tin and is fixed on the spring leaf 10 that the second external electrode 7 on the insulation booth 17 is electrically connected and consists of, and the pad of this spring leaf and pressure-sensitive lightning-proof chip 16 middle sections is hot dispersal point 15.Electrode of pressure-sensitive lightning-proof chip 16 is electrically connected with the first electrode 3 on being fixed on insulation booth 17, another electrode of this pressure-sensitive lightning-proof chip is electrically connected with spring leaf 10 by hot dispersal point 15.
When the low temperature melts soldering tin, can upspring rapidly, disengage with pressure-sensitive lightning-proof chip 16 and cut off circuit in order to ensure spring leaf 10, be fixed with bearing pin 11 on the surface of insulation booth 17, cut-out plate 13 between insulation booth 17 and spring leaf 10 is enclosed within on this bearing pin, and the lower end of this cut-out plate is by spring 4 tensions that are fixed on the insulation booth 17.
For easy to use, insulation booth 17 is fixed in the shell 1.For the ease of onsite alarming, be provided with the observable window 12 that shows at the top margin of shell 1 corresponding to the position that cuts off plate 13; If the low temperature melts soldering tin is cut off plate 13 and rotated counterclockwise and during with spring leaf 10 jack-up around bearing pin 11 under the effect of spring 4, it is that indication circuit is cut off that the upper end that cuts off plate 13 turns to the position that shows window 12.In order to realize remote alarms, contact with the thimble 6 of sensitive switch 5 in the lower end that cuts off plate 13; In case circuit is cut off, sensitive switch 5 just can move and send alarm signal to remote equipment.
For easy to use, shell 1 and sensitive switch 5 all are fixed in the base housing 2, being fixed with 9, one junction blocks of two junction blocks 9 in this base housing is electrically connected by another connector 8 the second external electrodes 7 with the first external electrode 3, another junction block 9 by connector 8.
Claims (4)
1. a low residual voltage, high power frequency tolerance surge protector, the second external electrode that comprises pressure-sensitive lightning-proof chip, the first external electrode that is electrically connected with an electrode of this pressure-sensitive lightning-proof chip, is electrically connected with another electrode of this pressure-sensitive lightning-proof chip by hot releasing mechanism; It is characterized in that: pressure-sensitive lightning-proof chip (16) is encapsulated in the insulation booth (17) that the surface is provided with window (14), and the middle section of pressure-sensitive lightning-proof chip (16) exposes from window (14); Described hot releasing mechanism comprises the spring leaf (10) that an end is welded to connect with the middle section of pressure-sensitive lightning-proof chip (16), the other end is fixedly connected with the second external electrode (7).
2. low residual voltage according to claim 1, high power frequency tolerance surge protector is characterized in that: described hot releasing mechanism also comprises the bearing pin (11) that is fixed on the insulation booth (17), be located on this bearing pin and be positioned at insulation booth (17) and spring leaf (10) between cut-out plate (13), the spring (4) that will cut off the plate tension.
3. low residual voltage according to claim 2, high power frequency tolerance surge protector; it is characterized in that: insulation booth (17) is fixed in the shell (1); the top margin of this shell is provided with corresponding to the position that cuts off plate (13) and shows window (12), and this lower end that cuts off plate contacts with the thimble (6) of sensitive switch (5).
4. low residual voltage according to claim 3, high power frequency tolerance surge protector; it is characterized in that: shell (1) and sensitive switch (5) all are fixed in the base housing (2), and two junction blocks (9) that are fixed in this base housing are electrically connected with the first external electrode (3), the second external electrode (7) by connector (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220451925.4U CN202840507U (en) | 2012-09-06 | 2012-09-06 | Low residual voltage and high power frequency tolerance surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220451925.4U CN202840507U (en) | 2012-09-06 | 2012-09-06 | Low residual voltage and high power frequency tolerance surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840507U true CN202840507U (en) | 2013-03-27 |
Family
ID=47952123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220451925.4U Expired - Lifetime CN202840507U (en) | 2012-09-06 | 2012-09-06 | Low residual voltage and high power frequency tolerance surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026067A (en) * | 2016-05-17 | 2016-10-12 | 广西新全通电子技术有限公司 | Arc-preventing fast-breaking surge protector |
-
2012
- 2012-09-06 CN CN201220451925.4U patent/CN202840507U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026067A (en) * | 2016-05-17 | 2016-10-12 | 广西新全通电子技术有限公司 | Arc-preventing fast-breaking surge protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |