WO2015193944A1 - 端子接続構造 - Google Patents
端子接続構造 Download PDFInfo
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- WO2015193944A1 WO2015193944A1 PCT/JP2014/065895 JP2014065895W WO2015193944A1 WO 2015193944 A1 WO2015193944 A1 WO 2015193944A1 JP 2014065895 W JP2014065895 W JP 2014065895W WO 2015193944 A1 WO2015193944 A1 WO 2015193944A1
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- WIPO (PCT)
- Prior art keywords
- connection structure
- terminal
- conductor
- structure according
- terminal connection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/308—Conductive members located parallel to axis of screw
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/06—Riveted connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
Definitions
- the present invention relates to a terminal connection structure for electrically connecting a conductor and at least one terminal electrode in an electronic component.
- a terminal connection structure that electrically connects a conductor to the terminal electrode of an electronic component a laminated conductor in which insulators and conductors are alternately stacked in the vicinity of the terminal electrode of the power device is used to connect the terminals of the power device.
- a terminal connection structure for connection is known (for example, Patent Document 1).
- Patent Document 1 a terminal connection is made by caulking a male part inserted into a contact terminal insertion hole provided in a conductor and an insulator in a laminated conductor and a female part formed larger in diameter than the contact terminal insertion hole. A structure is disclosed.
- the terminal connection structure disclosed in Patent Document 1 is formed in a circular shape so that the crimped portion is easily crimped.
- a power semiconductor module for large current use has appeared that has a plurality of fastening points on one terminal electrode on the module side. Since the plurality of fastening points are arranged, for example, in the horizontal direction, the shape of the module terminal is formed in, for example, a rectangular shape with the fastening points connected.
- the caulking structure according to the prior art is also rectangular.
- the caulking structure has a rectangular shape, it is difficult to equalize the caulking force over the entire circumference of the rectangular shape, and it has been difficult to adopt.
- each of the fastening points has a circular crimped portion, but the area occupied by the terminal electrode connecting the plurality of fastening points and the conductor in the crimped portion
- the contact area ratio which is the ratio with the contact area, is reduced. Since a power module having a plurality of fastening points is often used for high current applications, a decrease in the contact area ratio has a problem of a temperature rise in the contact portion, and the contact area ratio between the conductor and the terminal electrode is increased. There is a need for a terminal connection structure that can be used.
- the present invention has been made in view of the above, and an object thereof is to obtain a terminal connection structure capable of increasing a contact area ratio between a conductor and a terminal electrode.
- the present invention provides a terminal connection structure for electrically connecting a conductor and at least one terminal electrode in an electronic component, Is provided with a plurality of connection terminals, a male part provided with a hole through which a fastening member is inserted, and a female part through which the male part is inserted and provided with the same number of holes as the number of connection terminals.
- the conductor is fixed to the electronic component by a fastening mechanism provided in each of the connection terminals.
- the contact area ratio between the conductor and the module terminal electrode can be increased, and the temperature rise of the contact portion can be reduced.
- FIG. 1 is a perspective view showing a schematic shape of a power module suitable for explaining the terminal connection structure according to the first embodiment.
- FIG. 2 is a circuit diagram of the power module shown in FIG.
- FIG. 3 is a perspective view showing the outer shape of a component that is a component of the terminal connection structure according to the first embodiment.
- FIG. 4 is a partial cross-sectional perspective view showing an example when a conductor is caulked by the terminal connection structure according to the first embodiment.
- FIG. 5 is a perspective view when the example of FIG. 4 is viewed from the direction A of FIG. 6 is a perspective view of the example of FIG. 4 viewed from the direction B of FIG.
- FIG. 7 is a diagram for explaining caulking in the terminal connection structure according to the first embodiment.
- FIG. 1 is a perspective view showing a schematic shape of a power module suitable for explaining the terminal connection structure according to the first embodiment.
- FIG. 2 is a circuit diagram of the power module shown in FIG.
- FIG. 3 is a
- FIG. 8 is a perspective view showing an example when the power module is fastened using the terminal connection structure according to the first embodiment.
- FIG. 9 is a diagram for explaining the effect of the terminal connection structure of the first embodiment.
- FIG. 10 is a sectional view showing a terminal connection structure according to the second embodiment.
- FIG. 11 is a sectional view showing a terminal connection structure according to the third embodiment.
- FIG. 12 is a cross-sectional view showing a terminal connection structure according to the fourth embodiment.
- FIG. 13 is a plan view showing the terminal shape of the power module for explaining the terminal connection structure according to the fifth embodiment.
- FIG. 1 is a perspective view showing a schematic shape of a power module suitable for explaining the terminal connection structure according to the first embodiment
- FIG. 2 is a circuit diagram of the power module shown in FIG.
- the power module shown in FIGS. 1 and 2 is an example of an electronic component, and it goes without saying that an electronic component other than the power module may be connected.
- the power module 1 includes two elements in which a MOSFET that operates as a switching element and a diode that operates as a so-called flywheel diode (hereinafter referred to as “FWD”) are connected in antiparallel.
- a first element pair 10 and a second element pair 12 that are a pair are accommodated in a package 2 that is a module housing.
- the drain of the MOSFET and the cathode of the FWD are electrically connected within the module, and the terminal portion drawn from the electrically connected connection portion 10 a forms the first terminal electrode M ⁇ b> 1.
- the source of the MOSFET and the anode of the FWD are electrically connected within the module, and the terminal portion drawn out from the electrically connected connection portion 10b forms the second terminal electrode M2.
- the source of the MOSFET and the anode of the FWD are electrically connected in the module, and the terminal portion drawn from the electrically connected connection portion 12a forms the third terminal electrode M3.
- the drain of the MOSFET and the cathode of the FWD are electrically connected within the module, and the electrically connected connection portion 12b is electrically connected to the second terminal electrode M2.
- the first terminal electrode M1, the second terminal electrode M2, and the third terminal electrode M3 are each formed in a rectangular shape, and are provided on one main surface side in the package 2.
- the first terminal electrode M ⁇ b> 1 and the third terminal electrode M ⁇ b> 3 are arranged in a central portion of the package 2 such that the longitudinal direction thereof is parallel to the longitudinal direction of the package 2 and the arrangement is arranged in a direction perpendicular to the longitudinal direction.
- the second terminal electrode M ⁇ b> 2 is arranged on one end side in the longitudinal direction of the package 2, and the longitudinal direction is arranged in a direction orthogonal to the longitudinal direction of the package 2.
- Three holes 32 are provided in each of the first terminal electrode M1, the second terminal electrode M2, and the third terminal electrode M3, and each of these holes 32 is provided with a nut 34 as a fastening member.
- These holes 32 and nuts 34 constitute fastening points in the first terminal electrode M1, the second terminal electrode M2, and the third terminal electrode M3 that are terminal electrodes of the power module 1. The function of the nut 34 will be described later.
- FIG. 3 is a perspective view showing the outer shape of a component that is a component of the terminal connection structure according to the first embodiment.
- FIG. 4 is a partial cross-sectional perspective view showing an example when a conductor is caulked by the terminal connection structure according to the first embodiment.
- FIG. 5 is a perspective view when the example of FIG. 4 is viewed from the direction A of FIG. 6 is a perspective view of the example of FIG. 4 viewed from the direction B of FIG.
- FIG. 7 is a diagram for explaining caulking in the terminal connection structure according to the first embodiment.
- FIG. 8 is a perspective view showing an example when the power module 1 is fastened using the terminal connection structure according to the first embodiment.
- the components of the terminal connection structure according to Embodiment 1 are a male part 21 shown in FIG. 3 (a) and a female part 22 shown in FIG. 3 (b).
- the male part 21 has a pedestal part 21a and a shaft part 21b erected on the pedestal part 21a, and a fastening member, which will be described later, is inserted through the shaft center of the combined body of the pedestal part 21a and the shaft part 21b.
- the hole 21c is provided.
- the pedestal 21a has a circular cross section.
- the shaft portion 21b also has a circular cross section, but has a smaller diameter than the pedestal portion 21a.
- the female portion 22 has a rectangular or elliptical cross section (hereinafter referred to as “horizontal shape” when both are collectively referred to), and the shaft portion 21b of the male portion 21 is inserted therethrough.
- Three holes 22a are provided in accordance with the structure of the terminal electrode of the power module 1 shown in FIG. That is, the structure having three hole portions 22a is an example in accordance with the configuration of FIG. 1, and the configuration having two or more hole portions 22a forms the gist of the present invention.
- FIG. 3B shows a state in which two male parts 21 are inserted into the hole 22a.
- the female part 22 and the pedestal part 21a As shown in FIGS. 4 and 7, the conductor 25 is fixed by caulking the hole 21c of the male portion 21 located on the power module 1 side.
- caulking between the shaft portion 21 b and the female portion 22 of the male portion 21 is performed by inserting a caulking tool 41 from the shaft portion 21 b side of the male portion 21 and widening the hole portion 21 c.
- a caulking tool 41 from the shaft portion 21 b side of the male portion 21 and widening the hole portion 21 c.
- the method of caulking itself is known, and methods other than those shown here may be used.
- a bolt 36 which is a fastening member, is inserted into the hole 21 c of the male part 21, and the first terminal electrode M 2 and the second terminal electrode
- the conductor 25 is fixed to the power module 1 by fastening using the nut 34 (refer FIG. 1) which is a fastening mechanism provided in M2 and the 3rd terminal electrode M3.
- the nut 34 (refer FIG. 1) which is a fastening mechanism provided in M2 and the 3rd terminal electrode M3.
- the first terminal electrode M1, the second terminal electrode M2, and the third terminal electrode are used. If the hole 32 formed in M3 has a screw structure, the nut 34 becomes unnecessary.
- FIG. 9 is a diagram for explaining the effect of the terminal connection structure of the first embodiment.
- d1 is the length of the elliptical female portion 22 in the longitudinal direction
- d2 is the length of the female portion 22 in the direction orthogonal to the longitudinal direction.
- a portion indicated by hatching represents a contact portion with the conductor 25. As shown in FIG. 9 (a), contact with the conductor 25 is obtained at the remaining portion excluding the occupied portion of the hole 22a through which the bolt 36 is inserted.
- FIG. 9B shows a contact site when a circular crimping member is used for each connection terminal as in Patent Document 1.
- the outer diameter diameter of the pedestal portion 21a, the outer diameter diameter of the shaft portion 21b, and the distance d3 between the connection terminals are equal so that the same conditions as those shown in FIG. 3 used in the first embodiment are satisfied. is doing.
- the contact area with the conductor 25 can be increased by using the terminal connection structure of the first embodiment.
- a power module having a plurality of fastening points is often used for high current applications. That is, the current density increases. When the current density is large, there arises a problem that the temperature rise at the contact portion becomes large, and the influence on the design becomes large.
- the female portion which is a portion located on the power module 1 side among the portions in contact with the conductor 25 is formed in a horizontally long shape, the contact area with the conductor 25 is increased.
- the current density can be increased and the current density can be reduced.
- the male part provided with the hole part through which the fastening member is inserted, and the same number of holes as the number of connection terminals of the power module through which the male part is inserted.
- the conductor is sandwiched between the female part provided with the part, the conductor is fixed by caulking the hole part in the male part, and the fastening member inserted through the hole part of the male part and the fastening provided in the connection terminal Since the power module is fixed to the conductor by the mechanism, the contact area ratio between the conductor and the module terminal electrode can be increased without reducing the caulking force, and the temperature rise at the contact portion can be reduced. It becomes.
- FIG. FIG. 10 is a sectional view showing a terminal connection structure according to the second embodiment.
- the power module side is a female part and the fastening member side is a male part.
- the power module side is a male part.
- the fastening member side is a female part.
- a pedestal portion 51a having a horizontally long cross section viewed from the A1 direction and a shaft portion 51b having a circular cross section viewed from the A1 direction are erected.
- the male part 51 provided with three holes 51c through which the fastening members are inserted is configured.
- the number of holes 51c is set to 3 in accordance with the configuration of the power module 1 shown in FIG.
- a female portion 52 having a hole portion 52a through which the shaft portion 51b of the male portion 51 is inserted and having a circular cross section viewed from the A1 direction is configured.
- the female part 52 is divided into three parts. In the first embodiment, as shown in FIG. 7, the caulking tool 41 is inserted from the power module side to perform caulking, but in the second embodiment, the caulking tool 41 is inserted from the fastening member side. Then you can do caulking.
- the terminal connection structure according to the second embodiment configured as described above, since the male part and the female part are replaced with respect to the structure of the first embodiment, the side closer to the sandwiched conductor is the caulking side. Thus, it is possible to fix the conductor with a smaller caulking force than in the first embodiment.
- FIG. 11 is a sectional view showing a terminal connection structure according to the third embodiment.
- the configuration has three female portions 52 in order to match the configuration of the terminal electrodes of the power module 1, but in the third embodiment, the three female portions are connected as shown in FIG. It is the structure which has the female part 54 made to make horizontally long shape.
- parts that are the same as or equivalent to those in FIG. Note that the position for caulking is the same as in the second embodiment.
- the terminal connection structure according to the third embodiment configured as described above, since the male part and the female part are replaced with respect to the structure of the first embodiment, the side closer to the sandwiched conductor is the caulking side. Thus, it is possible to fix the conductor with a smaller caulking force than in the first embodiment.
- the caulking work can be performed continuously at once, and the caulking work can be performed efficiently. It becomes possible.
- FIG. 12 is a cross-sectional view showing a terminal connection structure according to the fourth embodiment.
- the configuration in order to match the configuration of the terminal electrode of the power module 1, as shown in FIG. 3, the configuration has three male parts 21, but in the fourth embodiment, as shown in FIG. It is the structure which has the male part 21A which connected three male parts and was formed in the horizontally long shape.
- parts that are the same as or equivalent to those in FIG. Note that the position for caulking is the same as in the first embodiment.
- the configuration is the same as that of the first embodiment, and the same effect as that of the first embodiment can be obtained.
- the caulking work can be performed continuously at one time. It becomes possible to carry out efficiently.
- Embodiment 5 FIG.
- the case where the terminal electrode of the power module 1 has a horizontally long shape has been described as shown in FIG. 1, but in the fifth embodiment, as an example other than the horizontally long shape, an L-shape as shown in FIG.
- the example of a shape is shown.
- the shape of the female portion or the male portion may be formed in an L shape in accordance with the shape. Therefore, if this method is extended, it can be applied to any shape.
- the power module has been described as an example.
- the power module can be applied to an electronic component that requires electrical connection with a conductor.
- the configurations shown in the above first to fifth embodiments are examples of the configuration of the present invention, and can be combined with other known techniques, and can be combined within the scope of the present invention. Needless to say, the configuration may be modified by omitting the unit.
- the present invention is useful as a terminal connection structure for electrically connecting a terminal and a conductor of an electronic component.
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Abstract
Description
まず、図1および図2を参照して、実施の形態1に係る端子接続構造の接続対象である電子部品について説明する。図1は、実施の形態1に係る端子接続構造の説明に好適なパワーモジュールの概略形状を示す斜視図であり、図2は、図1に示したパワーモジュールの回路図である。なお、図1および図2に示すパワーモジュールは電子部品の一例であり、パワーモジュール以外の電子部品が接続されてもよいことは言うまでもない。
図10は、実施の形態2に係る端子接続構造を示す断面図である。実施の形態1では、例えば図7に示すようにパワーモジュール側が雌部、締結部材側が雄部となる構造であったが、実施の形態2では、図10に示すように、パワーモジュール側が雄部、締結部材側が雌部となる構造である。具体的に説明すると、パワーモジュール側では、A1方向から見た断面が横長形状の台座部51aに、A1方向から見た断面が円形形状である軸部51bが立設され、実施の形態1と同様に締結部材が挿通される3つの孔部51cが設けられた雄部51が構成される。なお、孔部51cの個数は、図1に示すパワーモジュール1の構成に合わせて3としている。
図11は、実施の形態3に係る端子接続構造を示す断面図である。実施の形態2では、パワーモジュール1の端子電極の構成に合わせるため、3つの雌部52を有する構成であったが、実施の形態3では、図11に示すように、3つの雌部を連結させて横長形状に形成した雌部54を有する構成である。なお、図11において、図10と同一もしくは同等の部位には、同一符号を付して重複する説明は省略する。なお、カシメを行う位置は、実施の形態2と同様である。
図12は、実施の形態4に係る端子接続構造を示す断面図である。実施の形態1では、パワーモジュール1の端子電極の構成に合わせるため、図3に示すように、3つの雄部21を有する構成であったが、実施の形態4では、図12に示すように、3つの雄部を連結させて横長形状に形成した雄部21Aを有する構成である。なお、図12において、図3と同一もしくは同等の部位には、同一符号を付して重複する説明は省略する。なお、カシメを行う位置は、実施の形態1と同様である。
実施の形態1では、図1に示すように、パワーモジュール1の端子電極が横長形状の場合について説明したが、実施の形態5では、横長形状以外の例として、図13に示すようなL字形状の例を示したものである。このようなL字形状の場合、当該形状に合わせて雌部あるいは雄部の形状もL字形状に形成すればよい。よって、この手法を拡張すれば、任意の形状に応用することが可能である。
Claims (8)
- 導体と電子部品における少なくとも一つの端子電極との間を電気的に接続するための端子接続構造であって、
前記端子電極には複数の接続端子が設けられ、
締結部材を挿通させる孔部が設けられた雄部と、
前記雄部を挿通させ、前記接続端子の数と同数の孔部が設けられた雌部と、
を有し、
前記雌部と前記雄部との間に前記導体を挟み込み、前記雄部における前記孔部をかしめることによって前記導体を固定し、
前記雄部の孔部に挿通された締結部材と、前記接続端子の夫々に設けられた締結機構とによって前記導体を前記電子部品に固定する
ことを特徴とする端子接続構造。 - 前記電子部品側に位置する前記雄部の孔部をかしめて前記導体を固定することを特徴とする請求項1に記載の端子接続構造。
- 前記雄部は、断面円形の台座部と、前記台座部に立設され前記台座部の断面よりも小径の円形断面を有する軸部と、によって構成され、
前記台座部と前記軸部との結合体の軸心に前記締結部材を挿通させる孔部が設けられていることを特徴とする請求項2に記載の端子接続構造。 - 前記台座部と前記軸部との結合体が前記接続端子の数だけ連結されて構成されていることを特徴とする請求項3に記載の端子接続構造。
- 前記導体側に位置する前記雄部の孔部をかしめて前記導体を固定することを特徴とする請求項1に記載の端子接続構造。
- 前記雄部は、断面が横長形状の台座部と、断面が円形形状に形成されて前記台座部に立設され、前記接続端子の数と同数の軸部と、によって構成され、
前記台座部と前記軸部との結合体の軸心に前記締結部材を挿通させる孔部が前記接続端子の数と同数分設けられていることを特徴とする請求項5に記載の端子接続構造。 - 前記雌部は、夫々が分離されて構成されていることを特徴とする請求項6に記載の端子接続構造。
- 前記雌部は、連結されて構成されていることを特徴とする請求項6に記載の端子接続構造。
Priority Applications (5)
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JP2015513936A JP5815159B1 (ja) | 2014-06-16 | 2014-06-16 | 端子接続構造 |
CN201480079678.1A CN106415933A (zh) | 2014-06-16 | 2014-06-16 | 端子连接结构 |
US15/319,089 US9748671B2 (en) | 2014-06-16 | 2014-06-16 | Terminal connection structure |
PCT/JP2014/065895 WO2015193944A1 (ja) | 2014-06-16 | 2014-06-16 | 端子接続構造 |
DE112014006748.2T DE112014006748T5 (de) | 2014-06-16 | 2014-06-16 | Anschlussverbindungsaufbau |
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PCT/JP2014/065895 WO2015193944A1 (ja) | 2014-06-16 | 2014-06-16 | 端子接続構造 |
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WO2015193944A1 (ja) * | 2014-06-16 | 2015-12-23 | 三菱電機株式会社 | 端子接続構造 |
JP6904379B2 (ja) * | 2019-06-10 | 2021-07-14 | Smk株式会社 | 電気接続構造体、電気接続方法、電気コネクタ及び電気装置 |
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WO2009096013A1 (ja) * | 2008-01-30 | 2009-08-06 | Mitsubishi Electric Corporation | 端子接合構造及び端子接合方法 |
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- 2014-06-16 WO PCT/JP2014/065895 patent/WO2015193944A1/ja active Application Filing
- 2014-06-16 DE DE112014006748.2T patent/DE112014006748T5/de active Pending
- 2014-06-16 JP JP2015513936A patent/JP5815159B1/ja not_active Expired - Fee Related
- 2014-06-16 US US15/319,089 patent/US9748671B2/en active Active
- 2014-06-16 CN CN201480079678.1A patent/CN106415933A/zh active Pending
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Also Published As
Publication number | Publication date |
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DE112014006748T5 (de) | 2017-05-18 |
JP5815159B1 (ja) | 2015-11-17 |
CN106415933A (zh) | 2017-02-15 |
US9748671B2 (en) | 2017-08-29 |
US20170125921A1 (en) | 2017-05-04 |
JPWO2015193944A1 (ja) | 2017-04-20 |
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