CN104253423A - Surge protection device - Google Patents
Surge protection device Download PDFInfo
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- CN104253423A CN104253423A CN201310261715.8A CN201310261715A CN104253423A CN 104253423 A CN104253423 A CN 104253423A CN 201310261715 A CN201310261715 A CN 201310261715A CN 104253423 A CN104253423 A CN 104253423A
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- Prior art keywords
- terminal
- piezo
- surge protector
- resistance
- release lever
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Abstract
The invention provides a surge protection device. The width of the surge protection device can be reduced by one half of the width of an existing 1P+N surge protection device. The surge protection device includes a varistor, a gas discharge tube, a base, a first terminal, a second terminal, a third terminal, a rocker arm and a tripping rod; the first terminal is in electric conduction connection with one side of the tripping rod; the other side with the tripping rod is in electric conduction connection with the input side of the varistor; the output side of the varistor is in electric conduction connection with the third terminal; the third terminal is in electric conduction connection with the input side of the gas discharge tube; and the output side of the gas discharge tube is in electric conduction connection with the second terminal. The surge protection device of the invention can have the same performance with the existing 1P+N surge protection device or better performance than that of the existing 1P+N surge protection device, and can maximally withstand 40kA and 8/20 s-waveform current.
Description
Technical field
The present invention relates to surge protector, particularly 1P+N surge protector.
Background technology
Surge protector is applied in circuit usually, is connected in parallel with load, when there is surge in circuit, is load bridging, and protection load avoids because the surge in circuit is damaged.
Existing 1P+N surge protector, is made up of two modules, comprises piezo-resistance (MOV) and gas discharge tube (GDT) in each module respectively.Because the size restrictions of piezo-resistance and gas discharge tube, in the existing product of Schneider Company, it is wide that this 1P+N surge protector is designed to 36mm, comprises the module of piezo-resistance and the module wide 18mm respectively of air inclusion discharge tube.
Fig. 1 shows the circuit structure diagram of existing 1P+N surge protector; neutral line terminal N and phase terminal L is placed on side by it; earth connection terminal PE is at opposite side; electric current flows into from phase terminal L; through piezo-resistance; flow upwards through neutral line terminal N, then flow to earth connection terminal PE by gas discharger.Wherein, neutral line terminal N and phase terminal L is arranged in the same side, therefore, electric current is after flowing through piezo-resistance, and can could arrive neutral line terminal N to opposition side flowing, the distance of current flowing is large, can increase the space that wire structures takies.
Fig. 2 shows the schematic diagram of the binding post of the base of existing 1P+N surge protector; its neutral line terminal N and phase terminal L is arranged in the same side in base length direction; earth connection terminal PE is arranged on the opposite side of the length direction of base; this surge protector is respectively the module composition of 18mm width by two, and the overall width of base is 36mm.
On the basis of existing 1P+N surge protector, the size of surge protector also has the space of improving, and can discharge more space for user, and the use that can reduce the material of surge protector is to make the production cost of reduction surge protector.
Summary of the invention
The present invention proposes a kind of surge protector; its width that can reduce surge protector is the half of the width of existing 1P+N surge protector; and have even better performance identical with existing 1P+N surge protector, its maximum current born can reach 40kA(8/20 μ s waveform).
According to surge protector of the present invention, its technical scheme is: a kind of surge protector, comprise: piezo-resistance, gas discharge tube, base, the first terminal, second terminal and the 3rd terminal, rocking arm and release lever, wherein the first terminal is connected with the side conductivity of release lever, the opposite side of release lever is connected with the input side conductivity of piezo-resistance, the outlet side of piezo-resistance is connected with the 3rd terminal conductivity, 3rd terminal is connected with the input side conductivity of gas discharge tube, the outlet side of gas discharge tube is connected with the second terminal conductivity, release lever coordinates with rocking arm and makes to be heated when piezo-resistance, when piezo-resistance temperature exceedes threshold value, the circuit of surge protector disconnects by release lever, the first terminal and the second terminal are arranged in the side on base length direction, 3rd terminal is arranged in the opposite side on base length direction.
Preferably, release lever, piezo-resistance and gas discharge tube are arranged in above base from top to bottom successively and its length direction is consistent with the length direction of base.
According to surge protector of the present invention, by release lever, piezo-resistance and gas discharge tube are arranged in above base from top to bottom successively and its length direction is consistent with the length direction of base, therefore, by the module comprising piezo-resistance of originally separating with comprise two module package of gas discharge tube in a module, the first terminal and the second terminal and the 3rd terminal are outwards drawn from the both sides the length direction of base respectively, because the length direction of all parts in this surge protector is consistent with the length direction of base, decrease the width of surge protector as much as possible, reduce the volume of 1P+N surge protector on the whole, and the circuit passed through according to surge protector of the present invention and structural design, still the protective value of existing 1P+N surge protector can be realized, even can reach better performance.
Preferably, release lever is welded by solder with the input side of piezo-resistance.
Use solder welding release lever and piezo-resistance, can make to be heated when piezo-resistance, when piezo-resistance temperature exceedes threshold value, solder melts, and the electrical connection between release lever and piezo-resistance disconnects.
Preferably, release lever is connected with the first terminal by metal litzendraht wire.
Preferably, piezo-resistance is two pieces of piezo-resistances be connected in parallel, and described piezo-resistance input side and outlet side are input side and the outlet side of these two pieces of piezo-resistances be connected in parallel.
Use two pieces of smaller powers piezo-resistance substitute one piece of powerful piezo-resistance, the better protective value of surge protector can be obtained, it can be made to pass through to be 40kA(8/20 μ s waveform to the maximum) electric current.
Preferably, the first terminal, one end of the second terminal and the 3rd terminal is stretched out from base to chassis outer side respectively, and the other end extends above base, has rigidity.
The first terminal, the second terminal and the 3rd terminal have rigidity and it can be made can to support the parts of constant weight, such as, gas discharge tube.
Preferably, the input side of gas discharge tube and outlet side are connected to the second terminal and the 3rd terminal respectively by two rigid connectors.
Gas discharge tube can be fixed on above base by these two connectors, and realizes gas discharge tube and the conductivity between the second terminal with the 3rd terminal is connected.
Preferably, the first terminal is phase terminal, and the second terminal is earth connection terminal, and the 3rd terminal is neutral line terminal.
Preferably, described metal litzendraht wire is copper pigtail line.
According to Surge Protector of the present invention; because earth connection terminal and phase terminal are arranged in the same side; can realize, electric current flows into from phase terminal, through piezo-resistance; and arrive neutral line terminal in homonymy flowing; flow through gas discharge tube again to opposition side and arrive earth connection terminal, through the Surge Protector of this layout, decrease the distance of current flowing; reduce the space taken needed for Surge Protector internal wiring structure, obtain the integrally-built minimizing of Surge Protector.
According to Surge Protector of the present invention, by piezo-resistance and gas discharge tube being placed in same module, substantially reduce the volume of existing 1P+N surge protector, and decrease the parts manufactured needed for Surge Protector, reduce cost.
Accompanying drawing explanation
Other advantage of the present invention and feature by from ensuing only with the object of non-limiting example provide and the explanation of the specific embodiment of the present invention represented in the accompanying drawings become clearly obviously, in the accompanying drawings:
Fig. 1 shows the circuit structure diagram of existing 1P+N surge protector;
Fig. 2 shows the schematic diagram of the binding post of the base of existing 1P+N surge protector;
Fig. 3 shows the circuit structure diagram according to surge protector of the present invention;
Fig. 4 shows the schematic diagram of the binding post of the base according to surge protector of the present invention;
Fig. 5 shows the structural representation according to surge protector of the present invention;
Fig. 6 shows the structural representation of the opposite side of the surge protector according to Fig. 5.
Description of reference numerals
1 piezo-resistance
2 gas discharge tubes
3 bases
4 the first terminals
5 second terminals
6 the 3rd terminals
7 release levers
8 rocking arms
9 metal litzendraht wires
10 input electrodes
11 solder districts
12 output electrodes
13 output electrodes
14 first connectors
15 second connectors
16 springs
17 axles
18 piezo-resistances
L phase terminal
N neutral line terminal
PE earth connection terminal
Embodiment
Below in conjunction with Fig. 3 to Fig. 6, surge protector of the present invention is described in detail.
Fig. 5 and Fig. 6 shows the structural representation according to surge protector of the present invention from two opposite sides respectively.
As shown in Figure 5 and Figure 6, surge protector according to the present invention comprises: piezo-resistance 1,18, gas discharge tube 2, base 3, the first terminal 4, the second terminal 5 and the 3rd terminal 6, rocking arm 8 and release lever 7.Release lever 7, piezo-resistance 1 and gas discharge tube 2 are arranged in above base 6 from top to bottom successively.Release lever 7, the length direction of piezo-resistance 1 and gas discharge tube 2 is consistent with the length direction of base, and the first terminal 4 and the second terminal 5 are arranged in the side on base length direction, and the 3rd terminal 6 is arranged in the opposite side on base length direction.
The base length direction of indication in this article, be the direction relative with base Width, the length of usual base is greater than the width of base.
The first terminal 4 is connected by metal litzendraht wire 9 with release lever 7, and metal litzendraht wire is preferably made of copper, and release lever 7 is connected with the input electrode 10 of piezo-resistance.At this, the first terminal 4 is phase terminal, is the terminal of electric current input, usually connects live wire.
There are two piezo-resistances 1,18 in this embodiment, these two piezo-resistances 1,18 are connected in parallel, the input side of the piezo-resistance after parallel connection, the input electrode of these two piezo-resistances 1,18 is joined together to form the input electrode 10 of piezo-resistance, this input electrode 10 is through release lever 7, and stretch out from release lever 7, use solder to be welded to connect between input electrode 10 and release lever 7, form solder district 11.Solder is be fusible solder at low temperatures, it is after piezo-resistance is heated intensification, when temperature rise reaches the threshold value of setting, solder melting, disconnection is welded to connect between input electrode 10 and release lever 7, be subject to the effect of the elastic force of spring 16, release lever 7 is around axle 17 pivotable, and the connection between release lever 7 and input electrode 10 disconnects completely.The pivotable of this release lever 7 needs to coordinate with spring 16 and rocking arm 8, comprise the Chinese patent application of detailed description see Schneider company of the tripping mechanism of release lever 7, spring 16 and rocking arm 8: 201110346844.8, it is incorporated herein by reference in full, is no longer specifically described at this.In Chinese patent application: the embodiment of the release lever mentioned in 201110346844.8 all can use at this, as the tripping mechanism of Surge Protector of the present invention.At this, threshold value sets according to the characteristic of the different piezo-resistance selected, and selects corresponding solder.
Piezo-resistance 1 has output electrode 12, and piezo-resistance 18 has output electrode 13, and output electrode 12 and output electrode 13 are all connected on the 3rd terminal 6, and at this, the 3rd terminal 6 is neutral line terminal, usually connects zero line.
The input side of gas discharger 2 is connected with the 3rd terminal 6 by the first connector 14, and the outlet side of gas discharger 2 is connected with the second terminal 5 by the second connector 15, and at this, the second terminal 5 is earth connection terminal.
Although, use two piezo-resistances in the present embodiment, only use a piezo-resistance also can realize object of the present invention.At this, use two pieces of smaller powers piezo-resistance substitute one piece of powerful piezo-resistance, the better protective value of surge protector can be obtained, it can be made to pass through such as to be 40kA(8/20 μ s waveform to the maximum) electric current.
According to said structure; in surge protector of the present invention; the first terminal is connected with the side conductivity of release lever; the opposite side of release lever is connected with the input side conductivity of piezo-resistance; the outlet side of piezo-resistance is connected with the 3rd terminal conductivity; 3rd terminal is connected with the input side conductivity of gas discharge tube; the outlet side of gas discharge tube is connected with the second terminal conductivity; release lever coordinates with rocking arm and makes to be heated when piezo-resistance; when piezo-resistance temperature exceedes threshold value, the circuit of surge protector disconnects by release lever.
Electric current flows into from phase terminal, flow through release lever, enter the input electrode of piezo-resistance again, after piezo-resistance, flow to neutral line terminal, electric current flow to the input side of gas discharge tube again from neutral line terminal, gas coming through discharge tube finally flow to earth connection terminal from the outlet side of gas discharge tube.When in circuit, piezo-resistance heating exceedes the threshold value of setting; when connection between release lever and piezo-resistance disconnects completely; electrical connection between release lever and piezo-resistance disconnects, the circuit of Surge Protector disconnects, available protecting Surge Protector and piezo-resistance thereof.
Fig. 3 and Fig. 4 respectively illustrates the schematic diagram according to the circuit structure diagram of surge protector of the present invention and the binding post of base.
Phase terminal, earth connection terminal and the arrangement of neutral line terminal match with the flow path of electric current the circuit that can realize as shown in Figure 3; electric current flows into from phase terminal; through piezo-resistance; and arrive neutral line terminal in homonymy flowing; flow through gas discharge tube again to opposition side and arrive earth connection terminal; through the Surge Protector of this layout; decrease the distance of current flowing; reduce the space taken needed for Surge Protector internal wiring structure, obtain the integrally-built minimizing of Surge Protector.
According to surge protector of the present invention, by release lever, piezo-resistance and gas discharge tube are arranged in above base from top to bottom successively and its length direction is consistent with the length direction of base, therefore, by the module comprising piezo-resistance of originally separating with comprise two module package of gas discharge tube in a module, the first terminal and the second terminal and the 3rd terminal are outwards drawn from the both sides the length direction of base respectively, because the length direction of all parts in this surge protector is consistent with the length direction of base, decrease the width of surge protector as much as possible, reduce the volume of 1P+N surge protector on the whole, and the circuit passed through according to surge protector of the present invention and structural design, still the protective value of existing 1P+N surge protector can be realized, even can reach better performance.
Further, the first terminal, the second terminal and the 3rd terminal also can use the electric conducting material with rigidity to make, with the parts making it can support constant weight, such as, gas discharge tube.
In this embodiment, the input side of gas discharge tube and outlet side are connected to the second terminal and the 3rd terminal respectively by the first connector and the second connector, and this first connector and the second connector also can use rigid, conductive material to make.
Gas discharge tube can be fixed on above base by these two connectors, and realizes gas discharge tube and the conductivity between the second terminal with the 3rd terminal is connected.
Existing 1P+N surge protector comprises two modules; each module is that 18mm is wide; therefore overall width is 36mm; piezo-resistance and gas discharge tube are integrated in a module by surge protector according to the present invention; and be upwards place piezo-resistance and gas discharge tube along base, the width only using an original module namely can accommodating piezo-resistance and gas discharge tube simultaneously, therefore; width can be reduced to original half according to surge protector of the present invention, i.e. 18mm.
At this, although be described with the width of existing 1P+N surge protector, the width according to surge protector of the present invention can be 18mm, and this is only for the object of example, instead of the object of restriction.When not departing from spirit of the present invention, the width of surge protector can be set as required.
Piezo-resistance and gas discharge tube are not limited to arrange up and down above base, also can arrange left and right above base, can realize object of the present invention equally.
According to Surge Protector of the present invention, by piezo-resistance and gas discharge tube being placed in same module, substantially reduce the volume of existing 1P+N surge protector, and decrease the parts manufactured needed for Surge Protector, reduce cost.
Above to invention has been detailed introduction; for one of ordinary skill in the art; according to the thought of the embodiment of the present invention; change in specific embodiments and applications should not thought and deviate from the scope of protection of the invention; in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a surge protector, comprise: piezo-resistance (1, 18), gas discharge tube (2), base (3), the first terminal (4), second terminal (5) and the 3rd terminal (6), rocking arm (8) and release lever (7), it is characterized in that: the first terminal (4) is connected with the side conductivity of release lever (7), the opposite side of release lever (7) and piezo-resistance (1, 18) input side conductivity connects, piezo-resistance (1, 18) outlet side is connected with the 3rd terminal (6) conductivity, 3rd terminal (6) is connected with the input side conductivity of gas discharge tube (2), the outlet side of gas discharge tube (2) is connected with the second terminal (5) conductivity, release lever (7) coordinates with rocking arm (8) and makes when piezo-resistance (1, 18) be heated, piezo-resistance (1, 18) when temperature exceedes threshold value, the circuit of surge protector disconnects by release lever (7), the first terminal (4) and the second terminal (5) are arranged in the side on base (3) length direction, 3rd terminal (6) is arranged in the opposite side on base (3) length direction.
2. surge protector according to claim 1, is characterized in that: release lever (7) is welded by solder with the input side of piezo-resistance (1,18).
3. surge protector according to claim 1, is characterized in that: release lever (7) is connected with the first terminal by metal litzendraht wire (9).
4. surge protector according to any one of claim 1 to 3; it is characterized in that: piezo-resistance (1,18) is two pieces of piezo-resistances be connected in parallel (1,18), described piezo-resistance (1,18) input side and outlet side are input side and the outlet side of these two pieces of piezo-resistances be connected in parallel (1,18).
5. surge protector according to any one of claim 1 to 3; it is characterized in that: the first terminal (4); one end of second terminal (5) and the 3rd terminal (6) respectively from base (3) to base (3) outside stretch out, the other end extends in base (3) top, has rigidity.
6. surge protector according to claim 5, is characterized in that: the input side of gas discharge tube (2) and outlet side are connected to the second terminal (5) and the 3rd terminal (6) respectively by two rigid connectors.
7. surge protector according to any one of claim 1 to 3, is characterized in that: the first terminal (4) is phase terminal, and the second terminal (5) is earth connection terminal, and the 3rd terminal (6) is neutral line terminal.
8. surge protector according to claim 3, is characterized in that: described metal litzendraht wire (9) is copper pigtail line.
9. surge protector according to claim 1; it is characterized in that: release lever (7), piezo-resistance (1,18) and gas discharge tube (2) are arranged in base (3) top from top to bottom successively and its length direction is consistent with the length direction of base (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310261715.8A CN104253423B (en) | 2013-06-27 | 2013-06-27 | Surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310261715.8A CN104253423B (en) | 2013-06-27 | 2013-06-27 | Surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN104253423A true CN104253423A (en) | 2014-12-31 |
| CN104253423B CN104253423B (en) | 2018-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310261715.8A Active CN104253423B (en) | 2013-06-27 | 2013-06-27 | Surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104253423B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810814A (en) * | 2015-05-06 | 2015-07-29 | 厦门宏发开关设备有限公司 | Chase-flow surge protector |
| CN106208020A (en) * | 2016-08-17 | 2016-12-07 | 深圳市槟城电子有限公司 | A kind of composite gas discharge tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080192394A1 (en) * | 2004-11-12 | 2008-08-14 | Harris Richard A | Surge Protection Device |
| CN201594736U (en) * | 2010-01-12 | 2010-09-29 | 佛山市浦斯电子有限公司 | Surge suppressor with arc extinguishing function |
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN102568965A (en) * | 2010-12-16 | 2012-07-11 | 上海明科电气有限公司 | Combined type SPD (surge protection device) for OCP (over-current protection) |
| CN202586332U (en) * | 2011-09-19 | 2012-12-05 | 北京中科天力电子有限公司 | Strong type large through-flow capacity surge protector |
| CN202840506U (en) * | 2012-08-08 | 2013-03-27 | 西安市西无二电子信息集团有限公司 | Full-module double-tripping indication alarm surge protector |
| CN203339684U (en) * | 2013-06-27 | 2013-12-11 | 施耐德电器工业公司 | Surge protector |
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2013
- 2013-06-27 CN CN201310261715.8A patent/CN104253423B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080192394A1 (en) * | 2004-11-12 | 2008-08-14 | Harris Richard A | Surge Protection Device |
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN201594736U (en) * | 2010-01-12 | 2010-09-29 | 佛山市浦斯电子有限公司 | Surge suppressor with arc extinguishing function |
| CN102568965A (en) * | 2010-12-16 | 2012-07-11 | 上海明科电气有限公司 | Combined type SPD (surge protection device) for OCP (over-current protection) |
| CN202586332U (en) * | 2011-09-19 | 2012-12-05 | 北京中科天力电子有限公司 | Strong type large through-flow capacity surge protector |
| CN202840506U (en) * | 2012-08-08 | 2013-03-27 | 西安市西无二电子信息集团有限公司 | Full-module double-tripping indication alarm surge protector |
| CN203339684U (en) * | 2013-06-27 | 2013-12-11 | 施耐德电器工业公司 | Surge protector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810814A (en) * | 2015-05-06 | 2015-07-29 | 厦门宏发开关设备有限公司 | Chase-flow surge protector |
| CN104810814B (en) * | 2015-05-06 | 2018-06-08 | 厦门宏发开关设备有限公司 | A kind of big through-flow surge protector |
| CN106208020A (en) * | 2016-08-17 | 2016-12-07 | 深圳市槟城电子有限公司 | A kind of composite gas discharge tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104253423B (en) | 2018-10-02 |
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