CN205753351U - A kind of circuit brake - Google Patents
A kind of circuit brake Download PDFInfo
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- CN205753351U CN205753351U CN201620435506.XU CN201620435506U CN205753351U CN 205753351 U CN205753351 U CN 205753351U CN 201620435506 U CN201620435506 U CN 201620435506U CN 205753351 U CN205753351 U CN 205753351U
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- electrode
- sheet metal
- bimetal leaf
- circuit brake
- normal temperature
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Abstract
This utility model provides a kind of circuit brake, including: at least there is two electrodes that is first electrode and the gas-discharge tube of the second electrode；With described second electrode by movable the 3rd electrode being connected of bimetal leaf；When operating temperature is normal temperature, described 3rd electrode is connected with described second electrodes conduct；When operating temperature exceedes described normal temperature, described bimetal leaf deforms upon and makes described 3rd electrode disconnect with described second electrode and be conductively connected.The circuit brake that this utility model embodiment provides, when standing thunderbolt or overvoltage surge, it is possible to play the function of release lightning current or overvoltage, provides overvoltage protection for subsequent conditioning circuit；And, standing certain lasting power current or excessive power current, when being warming up to the upset point of described bimetal leaf because of heating, this circuit brake is opened a way because of the upset of bimetal leaf, provides overcurrent protection for subsequent conditioning circuit.
Description
Technical field
This utility model relates to overvoltage protection product scope, particularly relates to a kind of circuit brake.
Background technology
Gas-discharge tube is a kind of switching mode protection device, uses usually used as overvoltage protecting device.The gas generally used at present
Body discharge tube is to be formed by insulation body and two ends sealing electrode thereof, inner chamber filling with inert gas.When gas discharge pipe electrode two ends
When voltage exceedes the breakdown voltage of gas, will cause gap discharge, this gas-discharge tube is become low resistance state from high-impedance state rapidly,
Form conducting, thus protect other devices connected in parallel.But meanwhile, if this overvoltage persistent period is longer or frequency occurs
When rate is higher or the power frequency overcurrent of long-time or big electric current occurs, then gas-discharge tube is because bearing for a long time or the most electric
Flowing and cause heating up, too high temperature not only can affect the safe handling of other devices in circuit, and this gas is put
There is short circuit or the risk burst in fulgurite, even the circuit board of client is burnt formation fire.Therefore, how gas is being kept to put
On the basis of the function of fulgurite overvoltage protection is constant, increases overcurrent protection function, become the problem that letter in the industry is to be solved.
Utility model content
The purpose of this utility model is to provide a kind of circuit brake, is not required to outside connected switch device, can when crossing stream temperature rise
Cut off circuit timely, provide overvoltage and overcurrent protection for subsequent conditioning circuit simultaneously.
In view of this, this utility model embodiment provides a kind of circuit brake, including: at least there is two electrodes that is the
One electrode and the gas-discharge tube of the second electrode；With described second electrode by movable the 3rd electrode being connected of bimetal leaf；When
When operating temperature is normal temperature, described 3rd electrode is connected with described second electrodes conduct；When operating temperature exceed described normally
During temperature, described bimetal leaf deforms upon and makes described 3rd electrode disconnect with described second electrode and be conductively connected.
Further, described bimetal leaf is protruding arc shape, including bottom and top, described bottom and described second electricity
Extremely fixing electrical connection；When operating temperature is normal temperature, described top electrically connects described 3rd electrode；When operating temperature exceedes
During described normal temperature, the top shape of described bimetal leaf becomes depressed part and departs from described 3rd electrode and be conductively connected.
Further, the position electrically connecting described 3rd electrode at described top is provided with Gold plated Layer.
Further, described 3rd electrode is the conduction knee with elastic deformation ability；Described second electrode top is provided with absolutely
Embolium；Described bimetal leaf is protruding arc shape, including bottom and top；When operating temperature is normal temperature, described
First end of the 3rd electrode electrically connects with described second electrode on-fixed；When operating temperature exceedes described normal temperature, described double
Sheet metal overturns, and described bottom tilts withstands described 3rd electrode and make the first end of described 3rd electrode and described second electricity
Pole disengaging is conductively connected, and described top shape becomes depressed part and contacts with described insulating trip.
Further, the position electrically connected with described second electrode on-fixed of the first end of described 3rd electrode is provided with slider material
Or Gold plated Layer.
Further, described 3rd electrode is fixing connects the first sheet metal, and described second electrode is fixing connects the second sheet metal, institute
State that the free end of the first sheet metal is movable with the free end of described second sheet metal contacts connection；Described first sheet metal and/or institute
Stating the second sheet metal is bimetal leaf；When operating temperature is normal temperature, the free end of described first sheet metal and described second
The free end of sheet metal is conductively connected；When operating temperature exceedes described normal temperature, described bimetal leaf deforms upon, and makes
The free end of described first sheet metal is conductively connected with the free end disengaging of described second sheet metal.
Further, the free end of described first sheet metal and/or the free end of described second sheet metal are provided with slider material or gold-plated
Layer.
Further, when operating temperature returns to normal temperature, described bimetal leaf deforms upon recovery, and makes the described 3rd
Electrode recovers to be conductively connected with described second electrode.
Further, between described 3rd electrode and described second electrode, form annular seal space by insulation tube or insulation frame, described
Evacuation or fill the mixed gas of noble gas or reducibility gas H2 or noble gas and reducibility gas in annular seal space.
The circuit brake that this utility model embodiment provides, protects owing to the bimetal leaf being used for open-circuit-protection being integrated in circuit
Protect device inside, stream open-circuit-protection can either be provided for circuit, and the most not increase the miniaturization of circuit components, beneficially circuit
Integrated, and use is more convenient.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model and tie
Close accompanying drawing, this utility model is described in further detail, wherein
Fig. 1 is the generalized section of the circuit brake duty one that this utility model embodiment one provides；
Fig. 2 is the generalized section of the circuit brake duty two that this utility model embodiment one provides；
Fig. 3 is the generalized section of the circuit brake duty one that this utility model embodiment two provides；
Fig. 4 is the generalized section of the circuit brake duty two that this utility model embodiment two provides；
Fig. 5 is the generalized section of the circuit brake duty one that this utility model embodiment three provides；
Fig. 6 is the generalized section of the circuit brake duty two that this utility model embodiment three provides.
Detailed description of the invention
This utility model embodiment provides a kind of circuit brake, including: at least there is two electrodes that is first electrode and the
The gas-discharge tube of two electrodes；With described second electrode by movable the 3rd electrode being connected of bimetal leaf；When operating temperature is
During normal temperature, described 3rd electrode is connected with described second electrodes conduct；When operating temperature exceedes described normal temperature, institute
State bimetal leaf to deform upon and make described 3rd electrode disconnect with described second electrode and be conductively connected.
Wherein, described gas-discharge tube can be diode can also be multi-electrode tube；Normal temperature t is with this circuit brake
The temperature range that applied environment can bear is as the criterion, i.e. t ＜ T, T are the pole that the applied environment of this circuit brake can bear
Limit temperature, and, the bimetal leaf material that described bimetal leaf selects upset temperature spot i.e. deformation temperature point to be T；If operating temperature
Reach the upset temperature spot T of described bimetal leaf, then the bimetal leaf moment in this circuit brake occurs upset deformation to cause
Open circuit.
Concrete, described second electrode dependency structure by bimetal leaf movable connection the 3rd electrode, implement by three below
Example is explained, and for describing simplicity, the gas-discharge tube related to is all as a example by diode.
Incorporated by reference to being the cuing open of circuit brake duty one that this utility model embodiment one provides refering to Fig. 1-Fig. 2, Fig. 1
Face schematic diagram；Fig. 2 is the generalized section of the circuit brake duty two that this utility model embodiment one provides.Such as figure
Shown in 1-Fig. 2, the circuit brake of the present embodiment includes: gas-discharge tube, and described gas-discharge tube has two electrodes,
I.e. first electrode 11 and the second electrode 12；With described second electrode 12 by movable the 3rd electrode being connected of bimetal leaf 14
13。
Concrete, described bimetal leaf 14 is protruding arc shape, including bottom 142 and top 141, described bottom 142
Fix with described second electrode 12 and electrically connect.
When operating temperature is normal temperature, described circuit brake in running order, i.e. described bimetal leaf 14
Described top 141 contacts and electrically connects described 3rd electrode 13, specifically refer to shown in Fig. 1.When thunder-strike current or instantaneous mistake
When pressure gets to described three electrode 13, electric current passes to described second electrode 12 by bimetal leaf 14, and gas-discharge tube hits
Wearing, electric current is released by described first electrode 11.Now, gas-discharge tube is heating up, but due to the thunderbolt time very
Short, the heating of described gas-discharge tube is the ofest short duration, heats up relatively low, less on circuit impact.
When operating temperature exceedes described normal temperature, described bimetal leaf 14 moment deforms upon, and top 141 shape becomes depression
Portion 143 and with described 3rd electrode 13 depart from be conductively connected, specifically refer to shown in Fig. 2.When power-frequency overvoltage is through described gas
When body discharge tube is released, described gas-discharge tube is heating up, and owing to the power frequency persistent period is relatively long, gas-discharge tube is lasting
Heating causes temperature rise relatively big, and when temperature is raised above described normal temperature, application circuit has the danger caught fire, now, bimetallic
Sheet overturns rapidly deformation, disconnects being conductively connected between described second electrode 12 and described 3rd electrode 13, protects and answer electricity consumption
The safety on road.
Further, when operating temperature returns to normal temperature, described bimetal leaf 14 deforms upon recovery, i.e. returns to Fig. 1
Shown state, so that described 3rd electrode 13 recovers to be conductively connected with described second electrode 12.
In a preferred embodiment, the position electrically connecting described 3rd electrode 13 at described top 141 is provided with Gold plated Layer, to improve
Electric conductivity between itself and described 3rd electrode 13.
Annular seal space 18, described annular seal space 18 is formed by insulation tube 15 between described 3rd electrode 13 and described second electrode 12
Interior evacuation or fill the mixed gas of noble gas or reducibility gas H2 or noble gas and reducibility gas, to protect chamber
Interior conductive material is not oxidized.
The present embodiment has the advantage that
The circuit brake that this utility model embodiment provides, is integrated in bimetal leaf inside circuit brake, utilizes double
Sheet metal is heated and overturns the characteristics design open-circuit-protection of deformation, can either provide overvoltage and overcurrent protection for circuit, the most not increase electricity
The miniaturization of road components and parts, beneficially circuit is integrated, and use is more convenient.
Incorporated by reference to being the cuing open of circuit brake duty one that this utility model embodiment two provides refering to Fig. 3-Fig. 4, Fig. 3
Face schematic diagram；Fig. 4 is the generalized section of the circuit brake duty two that this utility model embodiment two provides.Such as figure
Shown in 3-Fig. 4, the circuit brake of the present embodiment includes: gas-discharge tube, and described gas-discharge tube has two electrodes,
I.e. first electrode 21 and the second electrode 22；With described second electrode 22 by movable the 3rd electrode being connected of bimetal leaf 24
23。
Concrete, described 3rd electrode 23 is the conduction knee with elastic deformation ability, and its free state is that the first end is turned under
Bent extremely contact i.e. electrically connects described second electrode 22；Described second electrode 22 upper surface is provided with insulating trip 26；Described bimetal leaf
24 is protruding arc shape, including bottom 242 and top 241.
When operating temperature is normal temperature, the first end of described 3rd electrode 23 electrically connects with described second electrode 22 on-fixed.
When operating temperature exceedes described normal temperature, described bimetal leaf 24 overturns, and described bottom 242 tilts and withstands institute
State the 3rd electrode 23 and make the first end of described 3rd electrode 23 depart from described second electrode 22 and be conductively connected, described top
241 shapes become depressed part 243 and contact with described insulating trip 26；Now, described 3rd electrode 23 is in pressured state.
In a preferred embodiment, for improving the contact conductive performance between described 3rd electrode 23 and described second electrode 22,
Slider material 27 or plating it is provided with in the position electrically connected with described second electrode 22 on-fixed of the first end of described 3rd electrode 23
Layer gold, described slider material is simple metal, alloy or composite contact material.
When operating temperature is normal temperature, described circuit brake in running order, i.e. described 3rd electrode 23
First end electrically connects with described second electrode 22, specifically refer to shown in Fig. 3.When thunder-strike current or instantaneous overvoltage are got to described
During three electrodes 23, electric current passes to described second electrode 22 by the first end of described 3rd electrode 23, and gas-discharge tube occurs
Puncturing, electric current is released by described first electrode 21.Now, gas-discharge tube is heating up, but owing to the thunderbolt time is non-
The shortest, the heating of described gas-discharge tube is the ofest short duration, heats up relatively low, less on circuit impact.
When operating temperature exceedes described normal temperature, described bimetal leaf 24 moment overturns, and described bottom 242 tilts top
Residence is stated the 3rd electrode 23 and is made the first end of described 3rd electrode 23 depart from described second electrode 22 and be conductively connected, described top
Portion 241 shape becomes depressed part 243 and contacts with described insulating trip 26, specifically refer to shown in Fig. 4.When power-frequency overvoltage passes through
When described gas-discharge tube is released, described gas-discharge tube is heating up, owing to the power frequency persistent period is relatively long, and gas discharge
Pipe persistent fever causes temperature rise relatively big, and when temperature is raised above described normal temperature, application circuit has the danger caught fire, now,
Bimetal leaf overturns rapidly deformation, disconnects being conductively connected between described second electrode 22 and described 3rd electrode 23, protects
The safety of application circuit.
Further, when operating temperature returns to normal temperature, described bimetal leaf 24 deforms upon recovery, described 3rd electricity
Pole 23 also returns to free state, i.e. returns to the state shown in Fig. 3, so that described 3rd electrode 23 and described second electrode
22 recover to be conductively connected.
Preferably, between described 3rd electrode 23 and described second electrode 22, form annular seal space 28 by insulation frame 25, described
Evacuation or fill the mixed gas of noble gas or reducibility gas H2 or noble gas and reducibility gas in annular seal space 28,
Conductive material with protection intracavity is not oxidized.
The present embodiment has the advantage that
The circuit brake that this utility model embodiment provides, is integrated in bimetal leaf inside circuit brake, utilizes double
Sheet metal is heated and overturns the characteristics design open-circuit-protection of deformation, can either provide overvoltage and overcurrent protection for circuit, the most not increase electricity
The miniaturization of road components and parts, beneficially circuit is integrated, and use is more convenient.
Incorporated by reference to being the cuing open of circuit brake duty one that this utility model embodiment three provides refering to Fig. 5-Fig. 6, Fig. 5
Face schematic diagram；Fig. 6 is the generalized section of the circuit brake duty two that this utility model embodiment three provides.Such as figure
Shown in 5-Fig. 6, the circuit brake of the present embodiment includes: gas-discharge tube, and described gas-discharge tube has two electrodes,
I.e. first electrode 31 and the second electrode 32；With described second electrode 32 by movable the 3rd electrode being connected of bimetal leaf 34
33。
Described 3rd fixing first sheet metal 34 that connects of electrode 33, described second electrode 32 is fixing connects the second sheet metal 34 ',
The free end of described first sheet metal 34 is movable with the free end of described second sheet metal 34 ' contacts connection.
Wherein, described first sheet metal 34 or described second sheet metal 34 ' are bimetal leaf.
Preferably, described first sheet metal 34 and described second sheet metal 34 ' are bimetal leaf, as shown in Figure 5.
In a preferred embodiment, for improving the contact conductive between described first sheet metal 34 and described second sheet metal 34 '
Can, it is provided with slider material or Gold plated Layer at the free end of described first sheet metal 34 or the free end of described second sheet metal 34 ',
Described slider material is simple metal, alloy or composite contact material.It is further preferred that described first sheet metal 34 from
Be equipped with slider material 36 or Gold plated Layer by end and the free end of described second sheet metal 34 ', described slider material be simple metal,
Alloy or composite contact material, as shown in Figure 5.
When operating temperature is normal temperature, the free end of described first sheet metal 34 and the free end of described second sheet metal 34 '
It is conductively connected.
When operating temperature exceedes described normal temperature, described bimetal leaf deforms upon, and makes described first sheet metal 34 oneself
Departed from by the free end of end with described second sheet metal 34 ' and be conductively connected, as shown in Figure 6.
When operating temperature is normal temperature, described circuit brake in running order, i.e. described 3rd electrode 33 leads to
Cross described first sheet metal 34 and described second sheet metal 34 ' to electrically connect with described second electrode 32, specifically refer to shown in Fig. 5.
When thunder-strike current or instantaneous overvoltage get to described three electrode 33, electric current passes through described first sheet metal 34 and described second
Sheet metal 34 ' passes to described second electrode 32, and gas-discharge tube punctures, and electric current is released by described first electrode 31.
Now, gas-discharge tube is heating up, but owing to the thunderbolt time is the shortest, the heating of described gas-discharge tube is the ofest short duration, rises
Temperature is relatively low, less on circuit impact.
When operating temperature exceedes described normal temperature, described bimetal leaf moment overturns, and makes described first sheet metal 34
The free end of free end and described second sheet metal 34 ' depart from and be conductively connected, specifically refer to shown in Fig. 6.Work as power-frequency overvoltage
When described gas-discharge tube is released, described gas-discharge tube is heating up, owing to the power frequency persistent period is relatively long, and gas
Discharge tube persistent fever causes temperature rise relatively big, and when temperature is raised above described normal temperature, application circuit has the danger caught fire, this
Time, bimetal leaf overturns rapidly deformation, disconnects being conductively connected between described second electrode 32 and described 3rd electrode 33, protects
Protect the safety of application circuit.
Further, when operating temperature returns to normal temperature, described bimetal leaf deforms upon recovery, described first metal
The free end of sheet 34 recovers to be conductively connected with the free end of described second sheet metal 34 ', i.e. returns to the state shown in Fig. 5, thus
Described 3rd electrode 33 is made to recover to be conductively connected with described second electrode 32.
Preferably, between described 3rd electrode 33 and described second electrode 32, form annular seal space 38 by insulation tube 35, described
Evacuation or fill the mixed gas of noble gas or reducibility gas H2 or noble gas and reducibility gas in annular seal space 38,
Conductive material with protection intracavity is not oxidized.
The present embodiment has the advantage that
The circuit brake that this utility model embodiment provides, is integrated in bimetal leaf inside circuit brake, utilizes double
Sheet metal is heated and overturns the characteristics design open-circuit-protection of deformation, can either provide overvoltage and overcurrent protection for circuit, the most not increase electricity
The miniaturization of road components and parts, beneficially circuit is integrated, and use is more convenient.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.For institute
For the those of ordinary skill in genus field, can also make other changes in different forms on the basis of the above description.
Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or variation are still located
Among the protection domain that this utility model is created.
Claims (9)
1. a circuit brake, it is characterised in that including:
At least there is two electrodes that is first electrode and the gas-discharge tube of the second electrode；
With described second electrode by movable the 3rd electrode being connected of bimetal leaf；
When operating temperature is normal temperature, described 3rd electrode is connected with described second electrodes conduct；
When operating temperature exceedes described normal temperature, described bimetal leaf deforms upon and makes described 3rd electricity
Pole disconnects with described second electrode and being conductively connected.
Circuit brake the most according to claim 1, it is characterised in that:
Described bimetal leaf is protruding arc shape, including bottom and top, described bottom and described second
The fixing electrical connection of electrode；
When operating temperature is normal temperature, described top electrically connects described 3rd electrode；
When operating temperature exceedes described normal temperature, the top shape of described bimetal leaf become depressed part and with
Described 3rd electrode disengaging is conductively connected.
Circuit brake the most according to claim 2, it is characterised in that: the electrical connection at described top
The position of described 3rd electrode is provided with Gold plated Layer.
Circuit brake the most according to claim 1, it is characterised in that:
Described 3rd electrode is the conduction knee with elastic deformation ability；
Described second electrode top is provided with insulating trip；
Described bimetal leaf is protruding arc shape, including bottom and top；
When operating temperature is normal temperature, the first end of described 3rd electrode and described second electrode on-fixed
Electrical connection；
When operating temperature exceedes described normal temperature, described bimetal leaf overturns, and described bottom tilts
Withstand described 3rd electrode and make the first end of described 3rd electrode depart from described second electrode and be conductively connected,
Described top shape becomes depressed part and contacts with described insulating trip.
Circuit brake the most according to claim 4, it is characterised in that: the of described 3rd electrode
The position electrically connected with described second electrode on-fixed of one end is provided with slider material or Gold plated Layer.
Circuit brake the most according to claim 1, it is characterised in that:
Described 3rd electrode is fixing connects the first sheet metal, and described second electrode is fixing connects the second sheet metal,
The free end of described first sheet metal is movable with the free end of described second sheet metal contacts connection；
Described first sheet metal and/or described second sheet metal are bimetal leaf；
When operating temperature is normal temperature, the free end of described first sheet metal and described second sheet metal
Free end is conductively connected；
When operating temperature exceedes described normal temperature, described bimetal leaf deforms upon, and makes described first
The free end of sheet metal is conductively connected with the free end disengaging of described second sheet metal.
Circuit brake the most according to claim 6, it is characterised in that: described first sheet metal
The free end of free end and/or described second sheet metal is provided with slider material or Gold plated Layer.
8. according to the circuit brake described in any one of claim 1-7, it is characterised in that: when work temperature
When degree returns to normal temperature, described bimetal leaf deforms upon recovery, and makes described 3rd electrode with described
Second electrode recovers to be conductively connected.
Circuit brake the most according to claim 8, it is characterised in that: described 3rd electrode and institute
State and form annular seal space by insulation tube or insulation frame between the second electrode, evacuation or fill out in described annular seal space
The mixed gas of filling with inert gas or reducibility gas H2 or noble gas and reducibility gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435506.XU CN205753351U (en) | 2016-05-13 | 2016-05-13 | A kind of circuit brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435506.XU CN205753351U (en) | 2016-05-13 | 2016-05-13 | A kind of circuit brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205753351U true CN205753351U (en) | 2016-11-30 |
Family
ID=57365726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620435506.XU Active CN205753351U (en) | 2016-05-13 | 2016-05-13 | A kind of circuit brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205753351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762762A (en) * | 2016-05-13 | 2016-07-13 | 深圳市槟城电子有限公司 | Circuit protection device |
| CN105762762B (en) * | 2016-05-13 | 2024-05-03 | 深圳市槟城电子股份有限公司 | Circuit protection device |
-
2016
- 2016-05-13 CN CN201620435506.XU patent/CN205753351U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762762A (en) * | 2016-05-13 | 2016-07-13 | 深圳市槟城电子有限公司 | Circuit protection device |
| CN105762762B (en) * | 2016-05-13 | 2024-05-03 | 深圳市槟城电子股份有限公司 | Circuit protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518116 Shenzhen, Longgang, Guangdong province Longgang Street Baolong community Baolong four road 3 Lan Pu Yuan Industrial Zone 1 Factory A501 Patentee after: Shenzhen Penang Electronics Co.,Ltd. Address before: 518116 Shenzhen, Longgang, Guangdong province Longgang Street Baolong community Baolong four road 3 Lan Pu Yuan Industrial Zone 1 Factory A501 Patentee before: Shenzhen Bencent Electronics Co.,Ltd. |