CN205544255U - Surge suppression device - Google Patents
Surge suppression device Download PDFInfo
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- CN205544255U CN205544255U CN201620230003.9U CN201620230003U CN205544255U CN 205544255 U CN205544255 U CN 205544255U CN 201620230003 U CN201620230003 U CN 201620230003U CN 205544255 U CN205544255 U CN 205544255U
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Abstract
The utility model provides a surge suppression device includes: the voltage sensitive component, the first terminal, the one end electricity of the first terminal is connected to the first surface of voltage sensitive component, the second terminal includes that the fixed part electricity is connected to the second surface of voltage sensitive component through heat sensitive material electricity fixed part of connecting and the portion of leaving away, and the portion of leaving away has the trend of leaving the fixed part. According to the utility model discloses, the fixed part is on a parallel with the second surface with the ATTACH SURFACES of the portion of leaving away to the direction that the fixed part left in the portion of leaving away is on a parallel with the second surface. The utility model discloses a surge suppression device forms the compact structure through the neotype mode of throwing off, has reduced the thickness of device greatly. And the terminal that contacts with MOV extends along its surface, makes area of contact between them increase to heat conduction effectively improves out -of -gear sensitivity.
Description
Technical field
This utility model relates to the surge suppressor of circuit protection, particularly to the surgesuppressor of the disengagement mode with novelty.
Background technology
Surge suppressor is a kind of for various electronic equipments, instrument and meter, the electronic installation of communication line offer security protection.When in electric loop or communication line because extraneous interference produces suddenly surge current or voltage, surge protector can turn on shunting within the extremely short time, thus avoid surge to the infringement of other equipment in loop.
Surge suppressor generally includes one or more metal-oxide varistor (MOV), is frequently connected between phase line and ground wire (or neutral conductor), and being used for releases voltage surge energy on the line occurs.MOV is a kind of non-linear electronic devices, in the course of the work, and may be by various applied stresses, such as temperature stress or temporary overvoltage power stress etc..When MOV suffers overstress, i.e. during rated value more than MOV, MOV deteriorates, and causes leakage current to increase, often generates heat, it is also possible to occur thermal breakdown short-circuit.The heating of MOV causes the temperature of surge suppressor to raise, and when temperature reaches the burning-point of the combustible material (such as epoxy resin coat or cabinet) around it, may cause fire.
For reducing the risk that surge suppressor catches fire, occur in that the design that MOV is taked heat portective switch.This heat portective switch can depart from the MOV failed from current supply circuit under certain condition and comes, to a certain extent, it is possible to catching fire of prevention surge suppressor.But, it being disadvantageous in that, a terminal of the heat portective switch of prior art is typically normal to the surface of MOV and connects, and contact area is little, and heat transfer efficiency is the highest, and the sensitivity of disengagement is relatively low.Additionally, the disengaged direction of the heat portective switch of prior art is usual and the perpendicular of MOV, take up room big, it is impossible to form compact structure.
Utility model content
A purpose of the present utility model is to provide a kind of surge suppressor, and it has the disengagement mode of novelty, highly sensitive, and can form relatively thin structure.
Above-mentioned purpose of the present utility model and other purposes can found out from description and advantage are achieved through the following technical solutions.
For realizing said one or multiple purpose, this utility model provides a kind of surge suppressor, including: voltage sensitive element, described voltage sensitive element has predetermined rated voltage, when the voltage being applied on described voltage sensitive element exceedes described rated voltage, the temperature of described voltage sensitive element raises；The first terminal, one end of described the first terminal is electrically connected to the first surface of described voltage sensitive element；Second terminal, including the fixed part electrically connected by thermo-sensitive material and exit portion, described fixed part is electrically connected to the second surface of described voltage sensitive element, and described exit portion has the trend leaving described fixed part.Especially, according to this utility model, the connection surface of described fixed part and described exit portion is parallel to described second surface, and described exit portion leave described fixed part be oriented parallel to described second surface.
In this utility model, described fixed part is all parallel with the surface of MOV with the off-direction of the connection surface of described exit portion and described exit portion, thus forms compact structure, considerably reduces the thickness of device.
Described exit portion can have the trend leaving described fixed part due to the effect of the structure of self or composition material etc. self, such as have resilient exit portion to be connected with fixed part when being stretched or compressed, thus there is the trend shrinking or stretching off fixed part.Described exit portion can also have the trend leaving described fixed part due to the effect of external force, such as exit portion is connected with having another structure resilient, this another structure is extruded by exit portion when exit portion is connected with fixed part or stretches, thus has stretching, extension or shrink and make exit portion leave the trend of fixed part.
In one embodiment, described fixed part is lamellar.The fixed part of lamellar extends along described second surface so that the contact area of fixed part and MOV can be sufficiently large, thus heat conduction effectively, improve the sensitivity disengaged.
In one embodiment, the connection end that described exit portion has a turning arm and the one end from described turning arm is extended, described connection end electrically connects with described fixed part.Turning arm and connection end constitute " L " shape.Can be provided with rotary shaft on described surge suppressor, when described connection end departs from described fixed part, the turning arm of described exit portion can rotate around rotary shaft.
In further embodiment, the connection end of described exit portion is lamellar.Thermo-sensitive material is sandwiched in the fixed part of lamellar and connects between end, forms compact thin structure, and heat conduction effectively.
In further embodiment, the turning arm of described exit portion is lamellar and is perpendicular to described second surface.The turning arm of lamellar and the bearing of trend connecting end of lamellar are mutually perpendicular to, and form " L " shape structure.The turning arm being perpendicular to second surface is easy to be connected to other structures, in order to such as make it have the trend leaving described fixed part.In other implementations, the turning arm of described exit portion is lamellar and is parallel to described second surface.
In one embodiment, the connection end of fixed part and described exit portion is rectangle.In other embodiments, the connection end of fixed part and exit portion can be other suitable shapes, the most circular, semicircle, irregularly shaped, as long as both can be formed in parallel with the connection surface of described second surface, forms face contact.
In one embodiment, described surge suppressor also includes non-conductive separator, described non-conductive separator has and moves the trend to its second position from its primary importance, in described primary importance, described non-conductive separator allows described exit portion and the electrical connection of described fixed part, in the described second position, described exit portion is not connected with described fixed part.Non-conductive separator provides the effect of arc extinguishing.If the most breakdown short circuit of MOV chip before heat portective switch disengages; electric arc will be produced between the gap formed after thermal protector disconnects; or; even if when heat portective switch contact opens the front the most breakdown short circuit of MOV chip; when overtension between the electrode on the electrode of contact MOV and MOV surface of heat portective switch and/or the spacing in the gap of formation are too small, between this gap, still may produce electric arc.Now, above-mentioned conductive separator moves to the second position, prevents or eliminate the formation of electric arc.
Above-mentioned non-conductive separator can use suitable various structures in prior art.In further embodiment, described non-conductive separator has slide block, guide rail, guide rod and the spring being set on guide rod, and under the effect of described spring, described slide block has and moves the trend to the second position along described guide rail from primary importance.Described slide block is insulator, moves the function providing arc extinguishing to the second position.
Compared with prior art, surge suppressor of the present utility model, by novel disengagement mode, forms compact structure, substantially reduces the thickness of device.Further, in this utility model, the terminal contacted with MOV extends along its surface, makes both contacts area increase, thus heat conduction effectively, improve the sensitivity disengaged.
Accompanying drawing explanation
Further describing various embodiment of the present utility model below in conjunction with accompanying drawing, in accompanying drawing, each part of display is only and explains that this utility model provides, and is therefore schematic, it is impossible to be interpreted the restriction to scope of the present utility model.
Figure 1A-D shows a kind of surge suppressor of the prior art.
Fig. 2 A-D shows another kind of surge suppressor of the prior art.
Fig. 3 A-B shows the surge suppressor according to an embodiment of the present utility model.
Fig. 4 A-B shows the parts of the surge suppressor according to an embodiment of the present utility model.
Detailed description of the invention
Below with reference to detailed description of the invention and accompanying drawing, this utility model is described; should be understood that; these detailed description of the invention are only to implement exemplary approach of the present utility model; and; the one or more features illustrated in one embodiment can be with one or more features combination of elaboration in another embodiment; form the further embodiment of the combination including the feature from different embodiments; these all embodiments all can be anticipated from disclosure of the present utility model, belongs to protection domain of the present utility model.Similarly, the feature of the present utility model shown in one drawing can combine with another feature of the present utility model in another figure, thus constitutes a new embodiment, and this falls within protection domain of the present utility model.
Figure 1A-D shows a kind of typical surge suppressor in prior art.Wherein, Figure 1A and Figure 1B respectively illustrates its effective and disarmed state, and Fig. 1 C and 1D respectively illustrates the position of heat portective switch under effective status and disarmed state.In the prior art, one end (square sheet) that heat portective switch contacts with MOV is perpendicular to the surface of MOV and extends, and its part contacted with MOV is elongated linear, and heat transfer efficiency is low.Only when the temperature of MOV rises to higher temperature and continues for some time, heat portective switch just can be triggered and disengage, it is impossible to effectively protect MOV.
Fig. 2 A-D shows another kind of typical surge suppressor in prior art.Wherein, Fig. 2 A and Fig. 2 B respectively illustrates its effective and disarmed state, and Fig. 2 C and 2D respectively illustrates the position of heat portective switch under effective status and disarmed state.In the prior art, one end that heat portective switch contacts with MOV is close to the surface of MOV and is extended, but; its direction disengaged is perpendicular to the surface of MOV; therefore enough spaces must be left between the parts mutually disengaged so that device must have certain thickness, it is impossible to form compact structure.
Fig. 3 A and 3B shows the surge suppressor according to an embodiment of the present utility model, and it is respectively effective status and disarmed state.This surge suppressor generally rectangular (other shapes are also feasible certainly, and those skilled in the art can select other available difformities according to practical situation), eliminates shell for clear display inner member in figure.This surge suppressor includes voltage sensitive element, i.e. metal-oxide varistor (MOV), and it has predetermined rated voltage, and when the voltage being applied on MOV exceedes described rated voltage, the temperature of MOV raises.In the drawings, MOV is located at the back side of shown element, is covered by the base of shown element, therefore has been not shown.
This surge suppressor also includes the first terminal 100 and the second terminal 200.One end of the first terminal 100 and the second terminal 200 is respectively electrically connected to two surfaces (one end of the first terminal is connected to the back side of MOV in the drawings, and one end of the second terminal is connected to the front of MOV) of MOV, and the other end is respectively connecting to ground wire or the neutral conductor and phase line.MOV can sense the pressure drop between described phase line and ground wire or the neutral conductor.
As it can be seen, the second terminal 200 includes fixed part 202 and exit portion.Fixed part 202 extends on the surface of MOV, thus is electrically connected to the front of MOV.Exit portion includes the connection end 206 that the turning arm 204 that can rotate and the one end from turning arm are extended around fulcrum 300, and both form " L " shape.In the effective status of Fig. 3 A, connect end 206 and electrically connected with fixed part 202 by thermo-sensitive material (such as soldering tin material), and there is due to the effect of external force the trend leaving fixed part 202.
In this embodiment, the end 206 that connects of fixed part 202 and exit portion is the rectangle of lamellar, and its connection surface is parallel to the front of MOV, and fixed part 202 is connected end 206 and blocks and invisible the most in figure 3 a.In other embodiments, the connection end of fixed part and exit portion can be other suitable shapes.
In this embodiment, the turning arm 204 of exit portion is lamellar and the front being perpendicular to MOV extension (stretching out in i.e. from figure), and the turning arm 204 of lamellar and the bearing of trend connecting end 206 of lamellar are mutually perpendicular to, and form " L " shape structure.In other embodiments, the turning arm 204 of exit portion can be bar-like or not with the front vertical of MOV, thus reduce the distance of itself and MOV front, reduce the thickness of device further.
Surge suppressor in figure also includes non-conductive separator, and it has slide block 402, guide rail 404, guide rod 406 and the spring 408 being set on guide rod.Under the effect of spring 408, slide block 402 has the trend moving the second position to Fig. 3 B along the guide rail 406 primary importance from Fig. 3 A.In described primary importance, slide block 402 allows exit portion and fixed part electrical connection, and in the described second position, exit portion is not connected with fixed part.
Under the effective status of Fig. 3 A, connect end 206 and be connected with fixed part 202 by eutectic welding tin material, thus make slide block 402 be maintained at primary importance by turning arm 204.Living through voltage and adstante febre at MOV, eutectic welding tin material is melted or softens, and connects end 206 and departs from fixed part 202, causes it to be released the binding force of slide block 402.Slide block 402 slides into the second position of Fig. 3 B under the effect of spring 408 along the oblique upper left side of guide rail 406, thus expand the gap connected between end 206 and fixed part 202 further, and wrap portion 202, reduce produce electric arc probability and when producing electric arc arc extinguishing.
In above process, the front being oriented parallel to MOV that exit portion moves to the second position of Fig. 3 B from the primary importance of Fig. 3 A, connecting end 206 and fixed part 202 relative misalignment during disengagement, the most claimed apparatus does not has extra thickness so that device can be made sufficiently thin.
In other embodiments, described surge suppressor can not include non-conductive separator, or includes other kinds of non-conductive separator, as long as its isolation method can mate with the disengagement mode of the heat portective switch of surge suppressor.
Fig. 4 A and 4B shows end 600 and the fixed part 500, respectively front elevation and axonometric chart of the exit portion of the surge suppressor according to an embodiment of the present utility model.The side of fixed part 500 extends along the surface of MOV, heat conduction effectively, and opposite side is electrically connected with the end 600 of exit portion by thermo-sensitive material.It will be clear that the end 600 of exit portion and fixed part 500 are lamellar, its connection surface is plane, and this plane is parallel with the surface of MOV.In figure, arrow indicates the direction of leaving away of the end 600 of exit portion, and it is parallel with the surface of MOV, thus without increasing the thickness of device so that it is can be made sufficiently thin.
The foregoing is only preferred implementation of the present utility model, those skilled in the art can various modification can be adapted without departing from scope of the present utility model to this utility model.As it was previously stated, the feature addressed in each embodiment or feature combination can individualism, or can combine with the feature in other embodiments or feature and combine, as long as said one or multiple advantage can be realized.
Claims (8)
1. a surge suppressor, including:
Voltage sensitive element, described voltage sensitive element has predetermined rated voltage, and when the voltage being applied on described voltage sensitive element exceedes described rated voltage, the temperature of described voltage sensitive element raises；
The first terminal, one end of described the first terminal is electrically connected to the first surface of described voltage sensitive element；
Second terminal, including the fixed part electrically connected by thermo-sensitive material and exit portion, described fixed part is electrically connected to the second surface of described voltage sensitive element, and described exit portion has the trend leaving described fixed part；
It is characterized in that,
The connection surface of described fixed part and described exit portion is parallel to described second surface, and described exit portion leave described fixed part be oriented parallel to described second surface.
Surge suppressor the most according to claim 1, it is characterised in that described fixed part is lamellar.
Surge suppressor the most according to claim 1, it is characterised in that the connection end that described exit portion has a turning arm and the one end from described turning arm is extended, described connection end electrically connects with described fixed part.
Surge suppressor the most according to claim 3, it is characterised in that the connection end of described exit portion is lamellar.
Surge suppressor the most according to claim 4, it is characterised in that the turning arm of described exit portion is lamellar and is perpendicular to described second surface.
Surge suppressor the most according to claim 5, it is characterised in that the connection end of described fixed part and described exit portion is rectangle.
7. according to the surge suppressor described in any one of claim 1-6, it is characterized in that, described surge suppressor also includes non-conductive separator, described non-conductive separator has and moves the trend to its second position from its primary importance, in described primary importance, described non-conductive separator allows described exit portion and the electrical connection of described fixed part, and in the described second position, described exit portion is not connected with described fixed part.
Surge suppressor the most according to claim 7, it is characterized in that, described non-conductive separator includes slide block, guide rail, guide rod and the spring being set on guide rod, and under the effect of described spring, described slide block has and moves the trend to the second position along described guide rail from primary importance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620230003.9U CN205544255U (en) | 2016-03-24 | 2016-03-24 | Surge suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620230003.9U CN205544255U (en) | 2016-03-24 | 2016-03-24 | Surge suppression device |
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| Publication Number | Publication Date |
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| CN205544255U true CN205544255U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620230003.9U Active CN205544255U (en) | 2016-03-24 | 2016-03-24 | Surge suppression device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117254440A (en) * | 2023-09-21 | 2023-12-19 | 佛山市浦斯电子有限公司 | Surge suppression device with arc extinguishing function |
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2016
- 2016-03-24 CN CN201620230003.9U patent/CN205544255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117254440A (en) * | 2023-09-21 | 2023-12-19 | 佛山市浦斯电子有限公司 | Surge suppression device with arc extinguishing function |
| CN117254440B (en) * | 2023-09-21 | 2024-04-30 | 佛山市浦斯电子有限公司 | Surge suppression device with arc extinguishing function |
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