WO2015177931A1 - サージ吸収素子 - Google Patents
サージ吸収素子 Download PDFInfo
- Publication number
- WO2015177931A1 WO2015177931A1 PCT/JP2014/063743 JP2014063743W WO2015177931A1 WO 2015177931 A1 WO2015177931 A1 WO 2015177931A1 JP 2014063743 W JP2014063743 W JP 2014063743W WO 2015177931 A1 WO2015177931 A1 WO 2015177931A1
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- WO
- WIPO (PCT)
- Prior art keywords
- thermal expansion
- expansion body
- absorbing element
- surge absorbing
- varistor
- Prior art date
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Definitions
- the present invention relates to an electronic component and a surge absorbing element that protects a circuit on which the electronic component is mounted from a surge voltage.
- the surge absorbing element has a function of protecting the subsequent circuit by supplying a surge current when a high voltage of a certain value or more is applied.
- a surge absorbing element generally has a structure in which a pair of electrodes are attached to both ends of a varistor base such as ZnO, external leads are drawn out from the respective electrodes, and the varistor base and the electrodes are covered with an exterior member.
- the operation start voltage of the varistor base decreases when current flows. That is, the function of the surge absorbing element deteriorates due to the flow of current, and the varistor base gradually approaches a short circuit state. For this reason, when an excessive surge voltage is repeatedly applied to the varistor substrate and the deterioration proceeds, the surge absorbing element eventually becomes a short circuit (short circuit) failure.
- Patent Document 1 describes a metal oxide varistor with a bimetal having a function of incorporating a bimetal in a metal oxide varistor (surge absorbing element) for absorbing a surge voltage used for the purpose of protecting an electronic component. .
- the metal oxide varistor with bimetal described in Patent Document 1 does not stop the deterioration of the varistor substrate itself. Therefore, when the metal oxide varistor is naturally cooled, the bimetal returns to its original state and returns to the short (short circuit) state, so that a surge voltage exceeding the rated voltage is applied to the metal oxide varistor (surge absorbing element) and the current is repeated. There was a possibility that a short circuit failure would occur and the temperature of the metal oxide varistor would increase.
- An object of the present invention is to suppress a current from flowing through a surge absorbing element whose function of absorbing a surge has deteriorated.
- the present invention includes a varistor base, a pair of electrodes that are electrically connected to both end faces of the varistor base to sandwich the varistor base, an external lead that is electrically connected to each of the pair of electrodes, and the electrodes
- a thermal expansion body that is provided between the pair of electrodes and that irreversibly expands by heat generated by the varistor base and separates at least one of the pair of electrodes from the varistor base.
- a surge absorbing element is provided between the pair of electrodes and that irreversibly expands by heat generated by the varistor base and separates at least one of the pair of electrodes from the varistor base.
- the present invention can suppress the occurrence of a short-circuit failure when the surge absorbing function of the surge absorbing element is deteriorated.
- FIG. 1 is a cross-sectional view showing the surge absorbing element according to the first embodiment.
- FIG. 2 is a cross-sectional view showing an open state of the surge absorbing element according to the first embodiment.
- FIG. 3 is a partial cross-sectional view showing the surge absorbing element according to the second embodiment.
- FIG. 4 is a partial cross-sectional view showing an open state of the surge absorbing element according to the second embodiment.
- FIG. 5 is a partial cross-sectional view showing the surge absorbing element according to the third embodiment.
- FIG. 6 is a partial cross-sectional view showing an open state of the surge absorbing element according to the third embodiment.
- FIG. 1 is a cross-sectional view showing the surge absorbing element according to the first embodiment.
- FIG. 2 is a cross-sectional view showing an open state of the surge absorbing element according to the first embodiment.
- the surge absorbing element 10 has a function of flowing a surge current when a high voltage of a certain value or more is applied, that is, a surge absorbing function.
- the surge absorbing element 10 of the first embodiment includes a varistor base 11, a pair of electrodes 12a and 12b, external leads 13a and 13b, exterior members 15a and 15b, and thermal expansion. And a body 14.
- the varistor substrate 11 includes, for example, a metal oxide such as ZnO or SrTiO 3 , but the material that can be used for the varistor substrate 11 is not limited to the metal oxide described above.
- the varistor base body 11 has a pair of end surfaces 11Ta and 11Tb and side portions 11S. Connect. The pair of end faces 11Ta and 11Tb face each other. The side portion 11S connects the pair of end surfaces 11Ta and 11Tb.
- the pair of electrodes 12a and 12b are electrically connected to both end faces 11Ta and 11Tb of the varistor base 11, respectively.
- the electrode 12a is electrically connected to the end surface 11Ta of the varistor substrate 11, and the electrode 12b is electrically connected to the end surface 11Tb of the varistor substrate 11.
- the pair of electrodes 12a and 12b sandwich the varistor base 11 and are not electrically connected.
- External leads 13a and 13b are electrically connected to each of the pair of electrodes 12a and 12b.
- the exterior members 15a and 15b cover the pair of electrodes 12a and 12b.
- the varistor substrate 11 and the electrode 12b are electrically connected to each other by, for example, bonding with a conductive adhesive or the like.
- the varistor substrate 11 and the electrode 12a are detachable and electrically connected by, for example, a conductive paste.
- a conductive paste it is only necessary that at least one of the varistor substrate 11 and the electrode 12b and the varistor substrate 11 and the electrode 12a be separable and electrically connected. Therefore, both the varistor substrate 11 and the electrode 12b and the varistor substrate 11 and the electrode 12a may be electrically connected by, for example, a conductive paste.
- the thermal expansion body 14 is disposed on the side portion 11S of the varistor base 11, is provided between the pair of electrodes 12a and 12b, and is sandwiched between the pair of electrodes 12a and 12b.
- the thermal expansion body 14 expands irreversibly by the heat generated by the varistor base 11, and pulls at least one of the pair of electrodes 12 a and 12 b away from the varistor base 11.
- the electrode 12b since the electrode 12b is bonded to the varistor base 11 and the electrode 12a is connected to the varistor base 11 by a conductive paste or the like, the thermal expansion body 14 expands, so that the electrode 12a becomes the varistor base. 11 is pulled away.
- the electrode 12b may be separated from the varistor substrate 11, or both the electrodes 12a and 12b may be separated from the varistor substrate 11.
- the thermal expansion body 14 is disposed so as to be wound around the side portion 11S of the varistor base 11.
- the thermal expansion body 14 is bonded to the electrode 12a and the electrode 12b with, for example, an insulating adhesive.
- the exterior members 15 a and 15 b are, for example, resin, and cover the electrodes 12 a and 12 b and a part of the thermal expansion body 14. As described above, in the present embodiment, the exterior members 15a and 15b cover a part of the thermal expansion body 14, but do not cover the entire thermal expansion body 14. For this reason, the portion of the thermal expansion body 14 that is not covered with the exterior members 15 a and 15 b is visible from the outside of the surge absorbing element 10. Moreover, although the thermal expansion body 14 expand
- the thermal expansion body 14 is, for example, a resin that can be irreversibly expanded by heat.
- the resin that can be irreversibly expanded by heat for example, AF-3024 manufactured by Sumitomo 3M Limited is used.
- AF-3024 manufactured by Sumitomo 3M Limited
- the thermal expansion body 14 is not reduced in volume even after cooling once a plurality of pores are formed therein.
- the thermal expansion body 14 expands irreversibly. That is, the thermal expansion body 14 maintains the expanded state once expanded.
- the thermal expansion body 14 When the thermal expansion body 14 is irreversibly expanded to increase the outer dimension, the distance between the pair of electrodes 12a and 12b increases. As a result, as shown in FIG. 2, the thermal expansion body 14 pulls the electrode 12a away from the varistor base 11, and forms an insulating gap 16 between the varistor base 11 and the electrode 12a. When the electrode 12a is pulled away from the varistor base 11, the surge absorbing element 10 is in an open (open) state, so that no current flows through the varistor base 11 even when a voltage is applied to the pair of electrodes 12a and 12b.
- the varistor substrate 11 When an excessive surge voltage is applied to the varistor substrate 11 many times and an excessive current flows many times, the varistor substrate 11 deteriorates and the operation start voltage is lowered to approach a short-circuit fault state. That is, the surge absorbing element 10 is deteriorated in the surge absorbing function. When the varistor substrate 11 approaches a short-circuit failure state, the operation start voltage decreases. Therefore, when the surge absorber 10 is connected between the phases of the power supply line, a current flows through the varistor substrate 11 to generate heat. The temperature rises. As a result, the temperature of the surge absorbing element 10, more specifically, the exterior members 15a and 15b rises.
- the thermal expansion body 14 irreversibly expands due to heat generation of the varistor base 11 due to a current flowing through the deteriorated varistor base 11. For this reason, once the thermal expansion body 14 expands, the surge absorbing element 10 maintains the state where the insulating gap 16 is formed between the varistor base 11 and the electrode 12a, as shown in FIG. For this reason, the surge absorbing element 10 is maintained in an open (open) state once the thermal expansion body 14 is expanded. Since the surge absorbing element 10 does not flow through the varistor base 11 after the thermal expansion body 14 has expanded, the power line, circuit, or equipment to which the surge absorbing element 10 is attached in a state where the surge absorbing function is lowered. The occurrence of short-circuit failure can be suppressed. Further, in the surge absorbing element 10, the temperature rise of the varistor base 11 and the exterior members 15 a and 15 b is suppressed in a state where the surge absorbing function is lowered.
- the temperature at which the thermal expansion body 14 starts irreversible expansion is referred to as expansion start temperature.
- the thermal expansion body 14 expands irreversibly when it reaches or exceeds an expansion start temperature (for example, 180 ° C.).
- the expansion start temperature is not limited to the above-described 180 ° C. because it varies depending on the specifications of the resin that can be irreversibly expanded by heat.
- the expansion start temperature is preferably equal to or lower than the heat resistance temperature of the exterior members 15a and 15b, and more preferably about 5 to 10 ° C. lower than the heat resistance temperature of the exterior members 15a and 15b.
- the expansion start temperature can be made equal to or lower than the heat resistance temperature of the exterior members 15a and 15b.
- the thermal expansion body 14 When the surge absorbing element 10 is in a state where the surge absorbing function is deteriorated, the thermal expansion body 14 is irreversibly expanded, and a safe open (open) state is maintained. As a result, no current flows through the surge absorbing element 10 having a deteriorated surge absorbing function, so that it is possible to suppress the occurrence of a short circuit (short circuit) failure in the circuit or devices to which the surge absorbing element 10 is attached. Further, the surge absorbing element 10 can suppress a current from continuing to flow through the varistor base 11 in a state where the surge absorbing function is deteriorated. As a result, the surge absorbing element 10 is improved in safety because temperature rise is suppressed. Furthermore, since the thermal expansion body 14 expands irreversibly below the heat resistant temperature of the exterior members 15a and 15b, the exterior members 15a and 15b can be used at the heat resistant temperature or lower.
- the thermal expansion body 14 may be a shape memory alloy that deforms so as to increase the distance between the pair of electrodes 12a and 12b when the thermal expansion temperature is equal to or higher than the expansion start temperature.
- the thermal expansion body 14 may be a structure such as a vaporized substance enclosed in a container made of a plastically deformable material or a material having a large thermal expansion coefficient.
- FIG. FIG. 3 is a partial cross-sectional view showing the surge absorbing element according to the second embodiment.
- FIG. 4 is a partial cross-sectional view showing an open state of the surge absorbing element according to the second embodiment.
- the surge absorber 20 includes a varistor base 21, a pair of electrodes 22a and 22b, external leads 23a and 23b, and exterior members 25a and 25b.
- the varistor base 21 has the same shape and function as the varistor base 11 included in the surge absorbing element 10 according to the first embodiment.
- the difference between the surge absorbing element 20 and the surge absorbing element 10 of the first embodiment is the shape and function of the thermal expansion body 24.
- the thermal expansion body 24 is a columnar member, and has a bent portion 24B between the pair of electrodes 22a and 22b.
- the bent portion 24B is bent in an S shape.
- the bent portion 24 ⁇ / b> B is provided with a mark 24 a on the inner side of the bent portion that cannot be seen from the outside of the surge absorbing element 20.
- the mark 24a indicates that the surge absorbing element 20 is in an open (open) state as a result of deterioration of the varistor base 21 included in the surge absorbing element 20.
- the surge absorbing element 20 includes a plurality of thermal expansion bodies 24.
- the plurality of thermal expansion bodies 24 are sandwiched between the pair of electrodes 22 a and 22 b and are disposed outside the side portion 21 ⁇ / b> S of the varistor base 21.
- the surge absorbing element 20 is viewed from a direction orthogonal to the end surfaces 21Ta and 21Tb of the varistor base 21, the plurality of thermal expansion bodies 24a are arranged at substantially equal intervals along the direction in which the side surface 21S of the varistor base 21 extends. It is preferable. By doing in this way, when the some thermal expansion body 24a expands irreversibly, the distance of a pair of electrode 22a and electrode 22b can be enlarged equally. As a result, the electrode 22a or the electrode 22b is reliably pulled away from the varistor substrate 21.
- the surge absorbing element 20 preferably includes at least three thermal expansion bodies 24. In this way, since the inclination of the electrode 22a or the electrode 22b when the plurality of thermal expansion bodies 24 expands irreversibly is suppressed, the electrode 22a or the electrode 22b is reliably pulled away from the varistor base 21, and a surge occurs. The absorption element 20 is surely opened (opened).
- the surge absorbing element 20 approaches the short-circuit failure state because the operation start voltage decreases.
- the thermal expansion body 24 expands irreversibly and the bent portion 21B extends.
- the electrode 22a is separated from the varistor base 21, and an insulating gap 26 is formed between the varistor base 21 and the electrode 22a.
- the mark 24a provided inside the bent portion becomes visible from the outside of the thermal expansion body 24, so that the surge absorbing element 20 is in an open (open) state. This can be notified to the user.
- the material and the expansion start temperature of the thermal expansion body 24 are the same as those of the thermal expansion body 14 described in the first embodiment.
- the surge absorbing element 20 has the same operations and effects as the surge absorbing element 10 of the first embodiment. Further, the surge absorbing element 20 can notify the user that the surge absorbing element 20 is in an open (open) state, and can further prompt the user to replace the surge absorbing element 20. By replacing the surge absorber 20 with a new one, the subsequent circuit can be reliably protected from the surge voltage.
- FIG. 5 is a partial cross-sectional view showing the surge absorbing element according to the third embodiment.
- FIG. 6 is a partial cross-sectional view showing an open state of the surge absorbing element according to the third embodiment.
- the surge absorber 30 includes a varistor base 31, a pair of electrodes 32a and 32b, external leads 33a and 33b, exterior members 35a and 35b, and a thermal expansion body 34. I have.
- the varistor base 31 provided in the surge absorber 30 has the same shape and function as the surge absorber 10 of the first embodiment.
- the surge absorbing element 30 is different from the surge absorbing element 10 of the first embodiment in that covers 34a and 34b covering the thermal expansion body 34 are attached to the pair of electrodes 32a and 32b or the exterior members 35a and 35b, respectively. It is a point.
- the covers 34a and 34b are provided on the surfaces of the pair of electrodes 32a and 32b facing each other.
- the cover 34a is attached to the electrode 32a
- the cover 34b is attached to the electrode 32b.
- the covers 34a and 34b may be formed integrally with the electrodes 32a and 32b, for example, by bending the electrodes 32a and 32b, or the electrodes 32a and 32b as separate members. It may be attached to.
- the covers 34a and 34b may be attached to the exterior members 35a and 35b.
- the covers 34a, 34b are provided outside the thermal expansion body 34 sandwiched between the pair of electrodes 32a, 32b. As shown in FIG. 5, the cover 34a and the cover 34b are overlapped with each other at the ends opposite to the portions attached to the electrodes 32a and 32b. With such a structure, the covers 34 a and 34 b cover the thermal expansion body 34.
- the covers 34a and 34b have ends opposite to the portions attached to the electrodes 32a and 32b when the thermal expansion body 34 is irreversibly expanded to increase the distance between the pair of electrodes 32a and 32b. Is supposed to open.
- the surge absorbing element 30 approaches the short-circuit fault state due to a decrease in the operation start voltage.
- the thermal expansion body 34 expands irreversibly.
- the electrode 32a is separated from the varistor base 31 and an insulating gap 36 is formed between the varistor base 31 and the electrode 32a.
- the thermal expansion body 34 expands, the space between the cover 34a and the cover 34b opens, and the thermal expansion body 34 becomes visible from the outside. I can inform you.
- the material and the expansion start temperature of the thermal expansion body 34 are the same as those of the thermal expansion body 14 described in the first embodiment.
- the surge absorbing element 30 has the same operations and effects as the surge absorbing element 10 of the first embodiment. Furthermore, the surge absorbing element 30 can notify the user that the surge absorbing element 30 is in an open (open) state and can prompt the user to replace the surge absorbing element 30. By replacing with a new surge absorbing element 30, the subsequent circuit is reliably protected from the surge voltage.
- the cover 34a, 34b side of the thermal expansion body 34 has a color different from that of at least one of the covers 34a, 34b and the exterior members 35a, 35b.
- the thermal expansion body 34 and at least one of the covers 34a and 34b and the exterior members 35a and 35b have different colors, so that the user visually recognizes the thermal expansion body 34. It becomes easy to do.
- the surge absorbing element 30 can reliably notify the user that the surge absorbing element 30 is in an open (open) state.
- applying a paint or using a material whose color changes when the temperature reaches the expansion start temperature or higher is used for the thermal expansion body 14.
- a sensor that detects that the thermal expansion body 14 of Embodiment 1 has expanded due to heat and an alarm device that issues an alarm based on an output when the sensor detects expansion of the thermal expansion body 14 due to heat, For example, the user may be notified that the surge absorbing element 10 is in an open (opened) state by being provided in a circuit subsequent to the surge absorbing element 10.
- the sensor that detects that the thermal expansion body 14 has expanded includes, for example, a sensor that detects the length of the thermal expansion body 14, a temperature sensor that detects that the temperature of the thermal expansion body 14 has reached the expansion start temperature or higher, and the like. is there.
- the alarm device may emit at least one of light and sound when the sensor detects the expansion of the thermal expansion body 14.
- Embodiment 1 to Embodiment 3 are not limited by the above-described contents.
- the above-described constituent elements include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range.
- the above-described components can be appropriately combined.
- at least one of various omissions, substitutions, and changes of the components can be made without departing from the spirit of the first to third embodiments.
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Abstract
Description
図1は、実施の形態1に係るサージ吸収素子を示す断面図である。図2は、実施の形態1に係るサージ吸収素子のオープン状態を示す断面図である。
図3は、実施の形態2に係るサージ吸収素子を示す部分断面図である。図4は、実施の形態2に係るサージ吸収素子のオープン状態を示す部分断面図である。
図5は、実施の形態3に係るサージ吸収素子を示す部分断面図である。図6は、実施の形態3に係るサージ吸収素子のオープン状態を示す部分断面図である。
Claims (6)
- バリスタ基体と、
前記バリスタ基体の両端面に電気的に接続されて前記バリスタ基体を挟持する一対の電極と、
前記一対の電極の各々に電気的に接続する外部リードと、
前記電極を被覆する外装部材と、
前記一対の電極の間に設けられ、かつ前記バリスタ基体が発生する熱によって不可逆的に膨張して前記一対の電極のうち少なくとも一方を前記バリスタ基体から引き離す熱膨張体と、
を備えることを特徴とするサージ吸収素子。 - 前記熱膨張体は、前記熱膨張体が膨張したとき、前記熱膨張体に設けられたマークが前記熱膨張体の外側から見えるようにしたことを特徴とする請求項1に記載のサージ吸収素子。
- 前記一対の電極又は前記外装部材の各々に設けられて前記熱膨張体を覆うカバーを備え、
前記熱膨張体が熱によって不可逆的に膨張したときに前記カバーが開き、前記熱膨張体を視認できるようにしたことを特徴とする請求項1に記載のサージ吸収素子。 - 前記熱膨張体が不可逆的に膨張する温度になったときに前記熱膨張対の色が変化する塗料が、前記熱膨張体の表面に塗布されていることを特徴とする請求項1に記載のサージ吸収素子。
- 前記熱膨張体が熱によって不可逆的に膨張したことを検出するセンサーと、
前記センサーが前記熱膨張を検出したときの出力に基づいて警報を発する警報器と、
を備えることを特徴とする請求項1に記載のサージ吸収素子。 - 前記熱膨張体が膨張を開始する温度は、180℃以上であることを特徴とする請求項1から請求項5のいずれか1項に記載のサージ吸収素子。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2015524551A JP5829779B1 (ja) | 2014-05-23 | 2014-05-23 | サージ吸収素子 |
CN201480079148.7A CN106463221B (zh) | 2014-05-23 | 2014-05-23 | 浪涌吸收元件 |
PCT/JP2014/063743 WO2015177931A1 (ja) | 2014-05-23 | 2014-05-23 | サージ吸収素子 |
DE112014006583.8T DE112014006583B4 (de) | 2014-05-23 | 2014-05-23 | Überspannungsschutzelement |
KR1020167031091A KR101691346B1 (ko) | 2014-05-23 | 2014-05-23 | 서지 흡수 소자 |
US15/312,813 US9842676B2 (en) | 2014-05-23 | 2014-05-23 | Surge absorbing element |
TW104111204A TWI611434B (zh) | 2014-05-23 | 2015-04-08 | 突波吸收元件 |
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PCT/JP2014/063743 WO2015177931A1 (ja) | 2014-05-23 | 2014-05-23 | サージ吸収素子 |
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US (1) | US9842676B2 (ja) |
JP (1) | JP5829779B1 (ja) |
KR (1) | KR101691346B1 (ja) |
CN (1) | CN106463221B (ja) |
DE (1) | DE112014006583B4 (ja) |
TW (1) | TWI611434B (ja) |
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CZ29574U1 (cs) * | 2016-05-03 | 2016-06-21 | Saltek S.R.O. | Přepěťová ochrana se signalizací překročení provozní teploty |
JP6333501B1 (ja) * | 2017-07-13 | 2018-05-30 | 三菱電機株式会社 | サージ吸収素子および電子部品 |
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DE102010038070B4 (de) | 2010-08-06 | 2012-10-11 | Phoenix Contact Gmbh & Co. Kg | Thermische Überlastschutzvorrichtung |
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2014
- 2014-05-23 WO PCT/JP2014/063743 patent/WO2015177931A1/ja active Application Filing
- 2014-05-23 US US15/312,813 patent/US9842676B2/en active Active
- 2014-05-23 KR KR1020167031091A patent/KR101691346B1/ko active IP Right Grant
- 2014-05-23 DE DE112014006583.8T patent/DE112014006583B4/de active Active
- 2014-05-23 CN CN201480079148.7A patent/CN106463221B/zh active Active
- 2014-05-23 JP JP2015524551A patent/JP5829779B1/ja active Active
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2015
- 2015-04-08 TW TW104111204A patent/TWI611434B/zh active
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JPS50135939U (ja) * | 1974-04-23 | 1975-11-08 | ||
JPS5490650U (ja) * | 1977-12-09 | 1979-06-27 | ||
JPS636701U (ja) * | 1986-07-01 | 1988-01-18 | ||
JP2011077234A (ja) * | 2009-09-30 | 2011-04-14 | Nec Personal Products Co Ltd | 電子部品およびプリント基板 |
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KR101691346B1 (ko) | 2016-12-29 |
TWI611434B (zh) | 2018-01-11 |
DE112014006583B4 (de) | 2021-05-27 |
US9842676B2 (en) | 2017-12-12 |
JP5829779B1 (ja) | 2015-12-09 |
CN106463221A (zh) | 2017-02-22 |
JPWO2015177931A1 (ja) | 2017-04-20 |
DE112014006583T5 (de) | 2017-04-13 |
KR20160133569A (ko) | 2016-11-22 |
CN106463221B (zh) | 2018-01-05 |
TW201545178A (zh) | 2015-12-01 |
US20170140854A1 (en) | 2017-05-18 |
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