CN107332225A - A kind of surge protection device and its application - Google Patents
A kind of surge protection device and its application Download PDFInfo
- Publication number
- CN107332225A CN107332225A CN201710753532.6A CN201710753532A CN107332225A CN 107332225 A CN107332225 A CN 107332225A CN 201710753532 A CN201710753532 A CN 201710753532A CN 107332225 A CN107332225 A CN 107332225A
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- China
- Prior art keywords
- electrode
- leading foot
- protection device
- surge protection
- cavity
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/046—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a thermocouple
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
Abstract
The invention discloses a kind of surge protection device and its application, including inner casing, shell, voltage-sensitive component, electrode lead-out pins and responding to switch component.The present invention is used for transient surges overvoltage in suppression circuit, voltage-sensitive component has close thermal coupling with responding to switch component, when the factors such as the transient surges overvoltage on circuit make voltage-sensitive component hinder the heating of short circuit current flow persistent fever for some reason, responding to switch component makes separating action because the thermal coupling of temperature-sensitive element is responded, fire and hidden peril of explosion are not only efficiently avoid, and prevents electronic equipment from causing secondary destruction.
Description
Technical field
The present invention relates to a kind of circuit protection device, more particularly to a kind of surge protection device and its application.
Background technology
Surge protector or surgesuppressor, are also surge protection device, are a kind of electronics for various sensitivities or costliness
Electronic component in equipment, such as computer and communication relevant device provides the protection device of overvoltage security protection.Existing surge
Protection device be typically aim under medium or general condition surge overvoltage protection design, so surge overvoltage energy compared with
During the small or shorter time, surge protection device now is unable to the response protection of rapid sensitive.
So, it would be desirable to a kind of safer more sensitive surge protection device, can be applicable to as communication, computer, TV,
In the protection of surge overvoltage short circuit overload on the high precise control circuit such as air-conditioning, such as electronic circuit is because extra electromagnetism is done
When disturbing generation momentary spike electric current suddenly or overvoltage, the surge protection device can turn on absorption, power down of releasing within moment
Come through voltage and play protection electronic equipment effect, and when short circuit overload causes surge device to damage can the quick separating surge protect
Protection unit, it is to avoid cause fire to electronic equipment formation catastrophic failure.
Current existing surge protector is varied, and a kind of surge as disclosed in Patent No. CN201110121526.1 is protected
In protection unit, including surge protection module and base, surge protection module inserting to base；Event is provided with surge protection module
Barrier protection release unit, surge protection module includes switching mode protection module and votage limit type protection module；It is provided with base remote
Journey warning device；Wherein error protection release unit links with remote alarming device.With finger in switching mode surge protection module
Show the error protection release unit of function, employ rotating contact structure, event is realized as the dynamic and static conductor connected mode of motion
Barrier protection departs from work.
And for example a kind of new surge protection device disclosed in Patent No. CN201410342761.5, mainly includes lightning protection member
Part, current sensor, relay, signal detection driver element, thermel protection device, overcurrent protective device, current limiter and shell, institute
State lightning protection component to connect with overcurrent protective device, constitute surge path；The thermel protection device is located at lightning protection component electrode
On；The current sensor is sleeved on surge path, output end access signal detection driver element；The signal detection
Driver element output end is connected with Control pole；Relay normally open contact is parallel to lightning protection component two after being connected with current limiter
Side.Current sensor of the present invention can sense the power current for flowing through lightning protection component, by signal detection driver element make after
Electrical equipment normally opened contact is closed, and power current flows through overcurrent protective device, disconnects overcurrent protective device.
The content of the invention
It is an object of the invention to overcome existing surge protection device scarce when overvoltage causes device short circuit overload
There is provided a kind of surge protection device and its application for sunken and deficiency.
The present invention uses following technical scheme：
A kind of surge protection device, including inner casing, shell, voltage-sensitive component, electrode lead-out pins and responding to switch component；
Described inner casing is closed-in construction, and inner casing is provided with insulating wall, electrode hole and fixed column；Described inner casing passes through lock with shell
Mode engage, when inner casing is engaged with shell by way of lock, formed two cavitys；Two described cavitys are respectively
First cavity and the second cavity；The first described cavity is in the front of inner casing；The second described cavity is at the back side of inner casing；It is described
Voltage-sensitive component include at least one voltage sensitive element；Described electrode lead-out pins include first electrode leading foot and the
Two electrode lead-out pins；Described responding to switch component includes temperature-sensitive element, front electrode and extension spring；Described insulating wall, fixation
Post and responding to switch component are arranged in the first cavity；Described voltage sensitive element is arranged in the second cavity.
Described voltage sensitive element tow sides are respectively equipped with metal electrode film；Described front electrode is located at wherein one
On individual metal electrode film, front electrode is reached in the first cavity by electrode hole by the second cavity, another metal electrode film
It is provided with backplate；Described backplate is placed in the second cavity, and by way of soldering with second electrode leading foot
The inner connection.
First electrode leading foot is additionally provided with described inner casing and stretches out groove and second electrode leading foot stretching groove, wherein first
Electrode lead-out pins stretch out groove and are located in the first cavity, and second electrode leading foot stretches out groove and is located in the second cavity；Described first
Electrode lead-out pins include first electrode leading foot outer end and first electrode leading foot is inner；Described first electrode leading foot is inner
Insure provided with pulling eye and fusing.
Described insulating wall is provided with through hole；Described front electrode is provided with jack；Described through hole is corresponding with jack
Set；Described first electrode leading foot the inner stretch out through hole with after jack, temperature-sensitive element by first electrode leading foot it is inner with
Front electrode is welded；One end of described extension spring is connected with pulling eye, and the other end is connected with fixed column.
As further illustrating for the present invention, described voltage sensitive element is piezoresistor type sensing element or put
Electric conduit-type sensing element or discharging gap formula sensing element.
As further illustrating for the present invention, described temperature-sensitive element is meltable metal alloy solder or conducting polymer
Thing.
A kind of application of described surge protection device is as follows：
The fusion temperature of the current value, magnitude of voltage and temperature-sensitive element that allow to pass through using preseting in the power supply system it is anti-
During arc surge protection device, two external pins point that first electrode leading foot outer end and second electrode leading foot outer end are constituted
It is not connected on phase line and the neutral conductor or ground wire；Now, responding to switch component connects to form normally closed work with voltage-sensitive component
State, as surge protection device normal operating conditions.
If voltage sensitive element electricity caused by the leakage current that the short-circuit overload current on circuit and its shelf-life aging are produced
Pressure-sensitive sensing unit temperature rise, this temperature is delivered on front electrode, the temperature-sensitive element for promoting thereon reach preset temperature threshold value and
Fusing, under the pulling force effect of extension spring, first electrode leading foot the inner is separated with front electrode, and first electrode leading foot is inner
The side of insulating wall is pulled to, promotes to form the dielectric strength of abundance between front electrode and first electrode leading foot are inner, it is thorough
The electrical connection that bottom has completely cut off in surge protection device；Meanwhile, prevent the moment electric arc produced during separation that fuses and launch from forming electricity
Puncture initiation short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
If exceed preset threshold value by the transient surges overvoltage for the insurance that fuses, overcurrent or short-circuit overload current,
Fusing insurance moment fusing vaporization causes front electrode and first electrode leading foot to separate, meanwhile, first electrode leading foot by
The pulling force effect of extension spring, forms the dielectric strength of abundance away from front electrode, thoroughly prevents the electric arc produced during separation from forming electricity
Puncture initiation short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
Compared with prior art, the beneficial effect that the present invention possesses：
1st, surge protection device of the invention has the short-circuit defencive function for overloading moment ejection separation of overvoltage and heated
Temperature rise moment separation function.
2nd, the protection device can be with moment disjunction, and described insulating wall has prevented first electrode leading foot and front electrode
Electrical contact, forms effective dielectric strength.
3rd, the present invention is simple in construction, and single component multiple use can be achieved, and is conducive to product to reduce and uses number of parts, makes
Cause low.
Brief description of the drawings
Fig. 1 is the inner casing positive structure schematic of the present invention；
Fig. 2 is the inner casing structure schematic diagram of the present invention；
Fig. 3 is the structural representation of the voltage sensitive element of the present invention；
Fig. 4 is the structural representation of the shell of the present invention；
Fig. 5 is the structural representation of the first electrode leading foot of the present invention；
Fig. 6 is the structural representation of the internal part combination of the present invention.
Reference：1st, inner casing, 11, electrode hole, 12, first electrode leading foot stretch out groove, 13, second electrode leading foot stretches
Go out groove, 14, insulating wall, 141, through hole, 15, fixed column；1a, the first cavity, 1b, the second cavity, 2, shell, 3, voltage-sensitive group
Part, 31, front electrode, 311, jack, 4, first electrode leading foot, 41, first electrode leading foot outer end, 42, pulling eye, 43, molten
Disconnected insurance, 51, second electrode leading foot outer end, 6, extension spring.
Embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
It is not limited solely to following preferred embodiment.
Embodiment 1：
A kind of surge protection device, including inner casing 1, shell 2, voltage-sensitive component 3, electrode lead-out pins and responding to switch group
Part；Described inner casing 1 is closed-in construction, and inner casing 1 is provided with insulating wall 14, electrode hole 11 and fixed column 15；Described inner casing 1 with
Shell 2 is engaged by way of lock, when inner casing 1 is engaged with shell 2 by way of lock, forms two cavitys；It is described
Two cavitys be respectively the first cavity 1a and the second cavity 1b；The first described cavity 1a is in the front of inner casing 1；Described
Two cavity 1b are at the back side of inner casing 1；Described voltage-sensitive component 3 includes at least one voltage sensitive element；Described electrode
Leading foot includes first electrode leading foot 4 and second electrode leading foot；Described responding to switch component includes temperature-sensitive element, front
Electrode 31 and extension spring 6；Described insulating wall 14, fixed column 15 and responding to switch component is arranged in the first cavity 1a；Described
Voltage sensitive element is arranged in the second cavity 1b.
Described voltage sensitive element tow sides are respectively equipped with metal electrode film；Described front electrode 31 is located at wherein
On one metal electrode film, front electrode 31 is reached in the first cavity 1a by electrode hole 11 by the second cavity 1b, another
Metal electrode film is provided with backplate；Described backplate is placed in the second cavity 1b, and with the by way of soldering
The connection of two electrode lead-out pins the inner.
First electrode leading foot is additionally provided with described inner casing 1 and stretches out groove 12 and second electrode leading foot stretching groove 13, its
Middle first electrode leading foot stretches out groove 12 and is located in the first cavity 1a, and second electrode leading foot stretches out groove 13 and is located at the second cavity 1b
It is interior；Described first electrode leading foot 4 includes first electrode leading foot outer end 41 and first electrode leading foot 4 is inner；Described
First electrode leading foot 4 is inner provided with pulling eye 42 and fusing insurance 43.
Described insulating wall 14 is provided with through hole 141；Described front electrode 31 is provided with jack 311；Described through hole
141 are correspondingly arranged with jack 311；Described first electrode leading foot 4 is inner to be stretched out after through hole 141 and jack 311, temperature-sensitive element
The inner of first electrode leading foot 4 is welded with front electrode 31；One end of described extension spring 6 is connected with pulling eye 42, the other end with
Fixed column 15 is connected.
Described voltage sensitive element is piezoresistor type sensing element.
Described temperature-sensitive element is meltable metal alloy solder.
The fusion temperature of the current value, magnitude of voltage and temperature-sensitive element that allow to pass through using preseting in the power supply system it is anti-
During arc surge protection device, first electrode leading foot outer end 41 and second electrode leading foot outer end 51 are constituted two external to draw
Pin is connected on phase line and the neutral conductor or ground wire；Now, responding to switch component connects to form normally closed with voltage-sensitive component 3
Working condition, as surge protection device normal operating conditions.
If voltage sensitive element electricity caused by the leakage current that the short-circuit overload current on circuit and its shelf-life aging are produced
Pressure-sensitive sensing unit temperature rise, this temperature is delivered on front electrode 31, promotes temperature-sensitive element thereon to reach preset temperature threshold value
And melt, under the pulling force effect of extension spring 6, the inner of first electrode leading foot 4 is separated with front electrode 31, and first electrode is drawn
The inner of pin 4 is pulled to the side of insulating wall 14, promotes to form abundance between front electrode 31 and the inner of first electrode leading foot 4
Dielectric strength, the electrical connection thoroughly completely cut off in surge protection device；Meanwhile, prevent moment from fusing and launch what is produced during separation
Electric arc formation electrical breakdown triggers short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
If exceeding preset threshold value by the transient surges overvoltage for the insurance 43 that fuses, overcurrent or short-circuit overload current
When, fusing insurance 43 moments fusing vaporization causes front electrode 31 and first electrode leading foot 4 to separate, meanwhile, first electrode is drawn
Go out pulling force effect of the pin 4 by extension spring 6, the dielectric strength of abundance is formed away from front electrode 31, thoroughly prevent from producing during separation
Electric arc formation electrical breakdown trigger short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
Embodiment 2：
A kind of surge protection device, including inner casing 1, shell 2, voltage-sensitive component 3, electrode lead-out pins and responding to switch group
Part；Described inner casing 1 is closed-in construction, and inner casing 1 is provided with insulating wall 14, electrode hole 11 and fixed column 15；Described inner casing 1 with
Shell 2 is engaged by way of lock, when inner casing 1 is engaged with shell 2 by way of lock, forms two cavitys；It is described
Two cavitys be respectively the first cavity 1a and the second cavity 1b；The first described cavity 1a is in the front of inner casing 1；Described
Two cavity 1b are at the back side of inner casing 1；Described voltage-sensitive component 3 includes at least one voltage sensitive element；Described electrode
Leading foot includes first electrode leading foot 4 and second electrode leading foot；Described responding to switch component includes temperature-sensitive element, front
Electrode 31 and extension spring 6；Described insulating wall 14, fixed column 15 and responding to switch component is arranged in the first cavity 1a；Described
Voltage sensitive element is arranged in the second cavity 1b.
Described voltage sensitive element tow sides are respectively equipped with metal electrode film；Described front electrode 31 is located at wherein
On one metal electrode film, front electrode 31 is reached in the first cavity 1a by electrode hole 11 by the second cavity 1b, another
Metal electrode film is provided with backplate；Described backplate is placed in the second cavity 1b, and with the by way of soldering
The connection of two electrode lead-out pins the inner.
First electrode leading foot is additionally provided with described inner casing 1 and stretches out groove 12 and second electrode leading foot stretching groove 13, its
Middle first electrode leading foot stretches out groove 12 and is located in the first cavity 1a, and second electrode leading foot stretches out groove 13 and is located at the second cavity 1b
It is interior；Described first electrode leading foot 4 includes first electrode leading foot outer end 41 and first electrode leading foot 4 is inner；Described
First electrode leading foot 4 is inner provided with pulling eye 42 and fusing insurance 43.
Described insulating wall 14 is provided with through hole 141；Described front electrode 31 is provided with jack 311；Described through hole
141 are correspondingly arranged with jack 311；Described first electrode leading foot 4 is inner to be stretched out after through hole 141 and jack 311, temperature-sensitive element
The inner of first electrode leading foot 4 is welded with front electrode 31；One end of described extension spring 6 is connected with pulling eye 42, the other end with
Fixed column 15 is connected.
Described voltage sensitive element is discharging gap formula sensing element.
Described temperature-sensitive element is meltable conducting polymer.
The fusion temperature of the current value, magnitude of voltage and temperature-sensitive element that allow to pass through using preseting in the power supply system it is anti-
During arc surge protection device, first electrode leading foot outer end 41 and second electrode leading foot outer end 51 are constituted two external to draw
Pin is connected on phase line and the neutral conductor or ground wire；Now, responding to switch component connects to form normally closed with voltage-sensitive component 3
Working condition, as surge protection device normal operating conditions.
If voltage sensitive element electricity caused by the leakage current that the short-circuit overload current on circuit and its shelf-life aging are produced
Pressure-sensitive sensing unit temperature rise, this temperature is delivered on front electrode 31, promotes temperature-sensitive element thereon to reach preset temperature threshold value
And melt, under the pulling force effect of extension spring 6, the inner of first electrode leading foot 4 is separated with front electrode 31, and first electrode is drawn
The inner of pin 4 is pulled to the side of insulating wall 14, promotes to form abundance between front electrode 31 and the inner of first electrode leading foot 4
Dielectric strength, the electrical connection thoroughly completely cut off in surge protection device；Meanwhile, prevent moment from fusing and launch what is produced during separation
Electric arc formation electrical breakdown triggers short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
If exceeding preset threshold value by the transient surges overvoltage for the insurance 43 that fuses, overcurrent or short-circuit overload current
When, fusing insurance 43 moments fusing vaporization causes front electrode 31 and first electrode leading foot 4 to separate, meanwhile, first electrode is drawn
Go out pulling force effect of the pin 4 by extension spring 6, the dielectric strength of abundance is formed away from front electrode 31, thoroughly prevent from producing during separation
Electric arc formation electrical breakdown trigger short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
Claims (9)
1. a kind of surge protection device, including inner casing (1), shell (2), voltage-sensitive component (3), electrode lead-out pins and response are opened
Close component；It is characterized in that：Described inner casing (1) is closed-in construction, and inner casing (1) is provided with insulating wall (14), electrode hole (11)
With fixed column (15)；Described inner casing (1) is engaged with shell (2) by way of lock, when inner casing (1) passes through with shell (2)
When the mode of lock is engaged, two cavitys are formed；Two described cavitys are respectively the first cavity (1a) and the second cavity (1b)；
Front of described the first cavity (1a) in inner casing (1)；The back side of described the second cavity (1b) in inner casing (1)；Described electricity
Sensing assembly (3) is pressed to include at least one voltage sensitive element；Described electrode lead-out pins include first electrode leading foot (4) and
Second electrode leading foot；Described responding to switch component includes temperature-sensitive element, front electrode (31) and extension spring (6)；Described is exhausted
Edge wall (14), fixed column (15) and responding to switch component are arranged in the first cavity (1a)；Described voltage sensitive element is set
In the second cavity (1b).
2. a kind of surge protection device according to claim 1, it is characterised in that：Described voltage sensitive element positive and negative two
Face is respectively equipped with metal electrode film；Described front electrode (31) is located on one of metal electrode film, front electrode (31)
Reached by electrode hole (11) by the second cavity (1b) in the first cavity (1a), another metal electrode film is provided with back side electricity
Pole；Described backplate is placed in the second cavity (1b), and is connected by way of soldering with second electrode leading foot the inner.
3. a kind of surge protection device according to claim 1, it is characterised in that：Is additionally provided with described inner casing (1)
One electrode lead-out pins stretch out groove (12) and second electrode leading foot stretches out groove (13), and wherein first electrode leading foot stretches out groove (12)
It is located in the first cavity (1a), second electrode leading foot stretches out groove (13) and is located in the second cavity (1b)；Described first electrode
Leading foot (4) includes first electrode leading foot outer end (41) and first electrode leading foot (4) is inner；Described first electrode is drawn
Pin (4) the inner is provided with pulling eye (42) and fusing insurance (43).
4. a kind of surge protection device according to claim 1, it is characterised in that：Described insulating wall (14) is provided with logical
Hole (141)；Described front electrode (31) is provided with jack (311)；Described through hole (141) is correspondingly arranged with jack (311)；
Described first electrode leading foot (4) the inner stretches out through hole (141) and after jack (311), temperature-sensitive element draws first electrode
Pin (4) is inner to be welded with front electrode (31)；One end of described extension spring (6) is connected with pulling eye (42), the other end and fixed column
(15) connect.
5. a kind of surge protection device according to claim 1, it is characterised in that：Described voltage sensitive element is pressure-sensitive
Resistance-type sensing element or electric discharge tubular type sensing element or discharging gap formula sensing element.
6. a kind of surge protection device according to claim 1, it is characterised in that：Described temperature-sensitive element is meltable gold
Belong to solder or conducting polymer.
7. according to a kind of application of any described surge protection device of claim 1 to 6, it is characterised in that：In power-supply system
During the preventing arc surge protection device for the fusion temperature that middle use presets the current value, magnitude of voltage and temperature-sensitive element that allow to pass through,
Two external pins that first electrode leading foot outer end (41) and second electrode leading foot outer end (51) are constituted are connected to
In phase line and the neutral conductor or ground wire；Now, responding to switch component connects to form normally closed working condition with voltage-sensitive component (3),
As surge protection device normal operating conditions.
8. according to a kind of application of any described surge protection device of claim 1 to 6, it is characterised in that：If voltage-sensitive
Element voltage sensitive element temperature rise caused by the leakage current that the short-circuit overload current on circuit and its shelf-life aging are produced, this
Temperature is delivered on front electrode (31), promotes temperature-sensitive element thereon to reach preset temperature threshold value and melt, in extension spring (6)
Under pulling force effect, first electrode leading foot (4) the inner is separated with front electrode (31), and the inner quilt of first electrode leading foot (4)
Move the side of insulating wall (14) to, promote to form the exhausted of abundance between front electrode (31) and first electrode leading foot (4) are inner
Edge intensity, the electrical connection thoroughly completely cut off in surge protection device；Meanwhile, prevent that moment from fusing and launching the electricity produced during separation
Arc formation electrical breakdown triggers short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
9. according to a kind of application of any described surge protection device of claim 1 to 6, it is characterised in that：If passing through fusing
When the transient surges overvoltage, overcurrent or short-circuit overload current for insuring (43) exceed preset threshold value, fusing insurance (43) wink
Between fusing vaporization cause front electrode (31) and first electrode leading foot (4) separation, meanwhile, first electrode leading foot (4) by
The pulling force effect of extension spring (6), away from the dielectric strength that front electrode (31) formation is sufficient, thoroughly prevents the electric arc produced during separation
Form electrical breakdown and trigger short circuit overload；Now the working condition of responding to switch component is changed into normally opened from normally closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710753532.6A CN107332225A (en) | 2017-08-25 | 2017-08-25 | A kind of surge protection device and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710753532.6A CN107332225A (en) | 2017-08-25 | 2017-08-25 | A kind of surge protection device and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107332225A true CN107332225A (en) | 2017-11-07 |
Family
ID=60203963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710753532.6A Pending CN107332225A (en) | 2017-08-25 | 2017-08-25 | A kind of surge protection device and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107332225A (en) |
-
2017
- 2017-08-25 CN CN201710753532.6A patent/CN107332225A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171107 |
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| WD01 | Invention patent application deemed withdrawn after publication |