WO2015045768A1 - 回路構成体 - Google Patents
回路構成体 Download PDFInfo
- Publication number
- WO2015045768A1 WO2015045768A1 PCT/JP2014/073242 JP2014073242W WO2015045768A1 WO 2015045768 A1 WO2015045768 A1 WO 2015045768A1 JP 2014073242 W JP2014073242 W JP 2014073242W WO 2015045768 A1 WO2015045768 A1 WO 2015045768A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bus bar
- adhesive
- adhesive sheet
- circuit board
- printed circuit
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10272—Busbars, i.e. thick metal bars mounted on the PCB as high-current conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
Definitions
- the present invention relates to a circuit structure in which a bus bar circuit body constituted by a plurality of bus bars is superimposed on a printed circuit board and fixed through an adhesive sheet.
- terminal portions of electrical components such as relays and switches are connected to the printed wiring of the printed circuit board and the bus bar of the bus bar circuit body by soldering such as reflow. .
- the circuit structure having the conventional structure has a problem that the adhesion between the bus bar and the printed board by the adhesive layer may not be maintained in the process of mounting the electrical component by soldering.
- the heating temperature in the reflow furnace during soldering needs to be higher than in the case of conventional eutectic solder, and tin applied to the surface of the bus bar. It may be higher than the melting temperature of the plating layer such as plating. In this case, the adhesion between the adhesive layer and the bus bar is not maintained by the melting of the plating layer, and the bus bar may be peeled off or detached from the printed board.
- Patent Document 2 proposes that the bus bar plating layer is formed of nickel having a melting temperature higher than the heating temperature of the reflow furnace. In this way, the problem that the plating layer of the bus bar melts due to the heating temperature at the time of soldering and the adhesion with the adhesive layer is eliminated is solved, but the hardness of the terminal portion of the nickel plated bus bar is eliminated. Is inevitable. Then, when the plating layer of the mating terminal connected to the nickel-plated terminal part is tin plating or the like whose hardness is lower than that of nickel plating, the plating layer with low hardness is worn due to sliding between the contact surfaces of both. As a result, there is a risk that a new problem of increasing contact resistance may occur.
- the present invention has been made in the background of the above-described circumstances, and the problem to be solved is to stabilize the bus bar circuit body superimposed on the printed circuit board regardless of the heating temperature at the time of soldering of the electrical components.
- An object of the present invention is to provide a circuit structure having a novel structure that can be fixed.
- a circuit structure in which a bus bar circuit body constituted by a plurality of bus bars is superimposed on a printed circuit board having printed wiring and is fixed via an adhesive sheet.
- the plurality of bus bars are attached in a state of being adjacently arranged with a gap therebetween, and the gap between the bus bars is filled with an adhesive, and the adhesive cuts the press cut surface of the bus bar with the adhesive.
- At least one of the adhesive sheet or the printed circuit board exposed from a gap between the bus bars is bonded.
- the adhesive is filled in the gap between the bus bars arranged adjacent to each other with a gap in the adhesive sheet, and the adhesive sheet exposed from the gap between the press cut surface of the bus bar and the bus bar by the adhesive,
- the printed circuit board is bonded. Accordingly, when soldering an electrical component to a circuit component, even if the surface plating of the bus bar is melted and the adhesion between the surface of the bus bar and the adhesive sheet is not maintained, the bus bar and the adhesive sheet and / or Alternatively, since the adhesion of the printed circuit board is maintained, the bus bar circuit body and the printed circuit board can be firmly fixed.
- the adhesive between the press cut surface of the bus bar and the adhesive is Unaffected by heating during soldering.
- the adhesive sheet and printed circuit board to which the adhesive is applied are not plated to be melted by heating during soldering, the bonding between the adhesive and them also affects the heating during soldering. I do not receive it. Therefore, it is possible to solve the problem of peeling of the bus bar circuit body from the printed circuit board due to heating during soldering with a very simple structure in which an adhesive is filled in the gap between adjacent bus bars.
- the adhesive between the press cut surface of the bus bar and the adhesive sheet and / or the printed circuit board is not affected by the heating during soldering due to the adhesive, so the type of plating on the bus bar surface depends on the heating temperature during soldering. There is no need to change, and the degree of freedom in selecting the plating of the bus bar is improved. For example, even when an electronic component is mounted on a circuit component by reflow soldering of lead-free solder, tin plating having a melting temperature lower than that of lead-free solder can be applied to the bus bar.
- any adhesive may be used as long as it has resistance to heating at the time of soldering, and an epoxy-based thermosetting adhesive, a heat-resistant photocurable adhesive such as a UV curable adhesive, and the like are preferable. Used.
- a through hole is formed in the adhesive sheet exposed from a gap between the bus bars, and the printed circuit board is exposed through the through hole.
- the press cut surface of the bus bar and the printed circuit board are directly bonded with the adhesive.
- the adhesive can be directly fixed to a printed circuit board that is harder than the adhesive sheet, the bus bar and the printed circuit board can be more stably fixed via the adhesive.
- a through-hole is formed at a corresponding position in each of the printed board and the adhesive sheet.
- the soldering portion of the bus bar is exposed on the mounting surface of the printed board.
- the electrical components can be easily soldered to the printed wiring of the printed circuit board and the bus bar of the bus bar circuit body by reflow soldering, and the manufacturing process can be simplified. Moreover, peeling of the printed circuit board from the bus bar circuit body due to the heating temperature of the reflow furnace is also advantageously prevented.
- a fourth aspect of the present invention is the one according to any one of the first to third aspects, wherein the adhesive is a photocurable adhesive.
- thermosetting adhesives that are cured by heating and two-component reaction effect types that are cured by a chemical reaction between the main agent and the curing agent.
- the adhesive sheet and printed circuit board exposed from the gap between the press cut surface of the bus bar and the bus bar are bonded by the adhesive, the surface plating of the bus bar is melted when soldering the electrical components. Even in this case, the adhesive between the bus bar and the adhesive sheet and / or the printed board can be maintained by the adhesive, so that the bus bar circuit body and the printed board can be kept firmly fixed.
- the press cut surface of the bus bar to which the adhesive is applied and the adhesive sheet and / or printed circuit board are not affected by the heating at the time of soldering because they are not plated by melting at the time of soldering. It is. Therefore, there is no need to change the type of plating on the surface of the bus bar according to the heating temperature at the time of soldering, and the degree of freedom in selecting the plating for the bus bar is improved.
- FIG. 2 is an exploded perspective view of the circuit structure shown in FIG. 1 (excluding electrical components).
- FIG. 3 is a further exploded perspective view of the circuit structure shown in FIG. 2.
- FIG. 2 is a plan view of the circuit structure shown in FIG. 1 (excluding electrical components).
- FIG. 2 is a partially enlarged schematic cross-sectional view of the circuit configuration body shown in FIG. 1. It is a figure which shows the other aspect of the adhesive sheet used for the circuit structure of this invention, Comprising: It is a disassembled perspective view equivalent to FIG. It is sectional drawing of the assembly state of the circuit structure shown in FIG. 7, Comprising: The principal part expanded sectional view corresponded in FIG.
- FIGS. 1 to 6 show a circuit structure 10 as an embodiment of the present invention.
- the circuit configuration body 10 includes a printed circuit board 12 having a printed wiring (not shown) and a bus bar circuit body 16 including a plurality of bus bars 14.
- a printed circuit board 12 on which an electrical component 18 such as a relay is mounted from above is fixed to the bus bar circuit body 16 via an adhesive sheet 20 and fixed to the gap 22 between the bus bars 14 from below.
- the circuit structure 10 is configured.
- “upper” means the upper side in FIG. 1 where the printed circuit board 12 is located
- “lower” means the lower side in FIG. 1 where the bus bar circuit body 16 is located.
- the bus bar circuit body 16 has a configuration in which a plurality of bus bars 14 are arranged adjacent to each other with a gap 22 therebetween, and a conductive material whose surface is plated by a conventionally known means. It is formed by press punching and bending a conductive metal plate. As a result, as shown in FIG. 5, the front surface 26 and the back surface 28 of the bus bar 14 are maintained in a state where plating (not shown) is applied, while the press formed at both ends in the width direction of the bus bar 14. The cut surface 30 (see FIG. 5) is peeled off at the time of press punching and is not plated.
- the end portions of the plurality of bus bars 14 are bent into a crank shape and the front end portions thereof are It has a tuning fork shape, and is formed with a fuse connection terminal portion 34 for inserting and connecting a connection portion of an electrical component such as a fuse (not shown).
- the ends of the plurality of bus bars 14 are similarly bent into a crank shape, and are inserted into a connector housing (not shown), for example, and the connector terminals A connector connection terminal portion 36 that functions as a metal fitting is formed.
- the printed circuit board 12 is overlapped and fixed to the bus bar circuit body 16 configured in this manner via the adhesive sheet 20 (see the upper part of FIG. 2).
- the surface 40 opposite to the mounting surface 38 on which the electrical component 18 of the printed circuit board 12 is mounted and the surfaces 26 of the plurality of bus bars 14 constituting the bus bar circuit body 16 are respectively attached to the adhesive sheet 20. It is attached to it.
- the adhesive sheet 20 is formed to be slightly smaller than the bus bar circuit body 16 and corresponds to a soldering portion 42 for mounting a terminal portion 50 of the electrical component 18 described later.
- a plurality of through holes 44 are provided at the position.
- the adhesive sheet 20 is formed of a resin sheet or the like in which a known adhesive such as an epoxy resin is applied on both sides.
- the printed circuit board 12 has substantially the same shape as the adhesive sheet 20, and a through hole 46 is formed at a position corresponding to the soldering portion 42 of the bus bar circuit body 16. ing. Thereby, the soldering portion 42 (see FIG. 4) of the bus bar 14 is exposed to the mounting surface 38 of the printed circuit board 12 through the through holes 44 and 46.
- the adhesive 24 is filled in the gap 22 between the bus bars 14 with respect to the bus bar circuit body 16 to which the printed circuit board 12 is fixed in this way.
- a heat-resistant adhesive 24 such as a UV (ultraviolet) curing type is filled in the gap 22 between the bus bars 14 by a method such as screen printing.
- UV (ultraviolet) irradiation device not shown
- UV (ultraviolet) is irradiated toward the back surface 28 side of the bus bar circuit body 16 to cure the adhesive 24.
- FIG. 5 shows a state where the adhesive 24 filled in the gap 22 between the bus bars 14 is cured.
- UV (ultraviolet) curable adhesive 24 By using the UV (ultraviolet) curable adhesive 24 as described above, it is possible to quickly realize the adhesion between the press cut surface 30 of the bus bar 14 and the adhesive sheet by the adhesive 24, and thus shorten the work time. Can be planned. In addition, since it is cured by UV (ultraviolet) irradiation, it is easier to handle than thermosetting adhesives that require heating, and two-component reaction effect types that cure by a chemical reaction between the main agent and the curing agent. Also, the work can be simplified.
- the terminal portions 50 and 50 of the electrical component 18 are lead-free solder 52 with respect to the printed wiring 48 of the printed circuit board 12 and the soldering portion 42 of the bus bar circuit body 16. It mounts by the reflow soldering etc. which used etc. (refer FIG. 6).
- the electrical component 18 can be easily soldered to the printed wiring 48 of the printed circuit board 12 and the bus bar 14 of the bus bar circuit body 16 by reflow soldering, the manufacturing process can be simplified. It is.
- a tie bar cutting step of cutting a tie bar (not shown) temporarily connecting a plurality of bus bars 14, or a bending step of bending the ends of the bus bar 14 to form the fuse connection terminal portion 34 and the connector connection terminal portion 36.
- this is performed after reflow soldering in this embodiment, these steps may be performed before reflow soldering.
- the bus bar 14 is shown in a shape in which tie bar cutting and bending are completed in all the drawings.
- the surface plating of the bus bar 14 melts and the surface 26 of the bus bar 14 Even if the adhesion with the adhesive sheet 20 is not maintained, the adhesive between the bus bar 14 and the adhesive sheet 20 is maintained by the adhesive 24, so that the bus bar circuit body 16 and the printed circuit board 12 can be held firmly. It has become.
- the adhesive 24 and the adhesive 24 are also bonded at the time of soldering. Unaffected by heating. Therefore, the problem of peeling of the bus bar circuit body 16 from the printed circuit board 12 due to heating during soldering can be solved.
- the surface plating of the bus bar 14 according to the heating temperature at the time of soldering. There is no need to change the type of the metal, and the degree of freedom in selecting the plating of the bus bar 14 is improved. That is, even when the electrical component 18 is mounted on the circuit structure 10 by reflow soldering of the lead-free solder 52, tin plating having a melting temperature lower than the melting temperature of the lead-free solder 52 may be applied to the bus bar 14. It becomes possible.
- the printed circuit board 12 is exposed through the through hole 58, while the press cut surface 30 of the bus bar 14 and the printed circuit board 12 are directly bonded by the adhesive 24. .
- the adhesive 24 Even in the circuit structure 54 of this embodiment, even if the surface plating of the bus bar 14 is melted and the adhesion between the surface 26 of the bus bar 14 and the adhesive sheet 56 is not maintained, the bus bar 14 and the printed circuit board 12 are bonded by the adhesive 24. Therefore, it is possible to obtain substantially the same effect as that of the circuit configuration body 10 of the previous embodiment.
- the adhesive 24 can be directly fixed to the printed circuit board 12 that is harder than the adhesive sheet 56, the bus bar 14 and the printed circuit board 12 can be fixed more stably through the adhesive 24.
- any adhesive 24 may be used as long as it has resistance to heating at the time of soldering, and a heat-resistant photo-curing adhesive such as a UV curing type exemplified in the present embodiment, or an epoxy-based thermosetting.
- a mold adhesive or the like is preferably used.
- the adhesive sheets 20 and 56 may be an adhesive sheet such as a high heat resistant double-sided tape.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connection Or Junction Boxes (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Claims (4)
- 複数本のバスバーにより構成されるバスバー回路体が、プリント配線を有するプリント基板に重ね合されて接着シートを介して固着されてなる回路構成体において、
前記接着シートに、前記複数本のバスバーが隙間を隔てて隣接配置された状態で被着されている一方、前記バスバー間の隙間に接着剤が充填されており、該接着剤により前記バスバーのプレス切断面と前記バスバー間の隙間から露呈する前記接着シート又は前記プリント基板の少なくとも一方が接着されている
ことを特徴とする回路構成体。 - 前記バスバー間の隙間から露呈する前記接着シートに貫通穴が形成されており、該貫通穴を通じてプリント基板が露呈されている一方、前記接着剤で前記バスバーの前記プレス切断面と前記プリント基板が直接接着されている請求項1に記載の回路構成体。
- 前記プリント基板と前記接着シートには、それぞれ対応する位置に貫通孔が形成されており、該貫通孔を介して前記バスバーの半田付け部が、前記プリント基板の実装面に露呈されている請求項1又は2に記載の回路構成体。
- 前記接着剤が光硬化型接着剤である請求項1~3の何れか1項に記載の回路構成体。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480052540.2A CN105580226B (zh) | 2013-09-24 | 2014-09-03 | 电路构成体 |
EP14848339.9A EP3051641A4 (en) | 2013-09-24 | 2014-09-03 | CIRCUIT ASSEMBLY |
US15/024,395 US9635754B2 (en) | 2013-09-24 | 2014-09-03 | Circuit assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-196765 | 2013-09-24 | ||
JP2013196765A JP5958768B2 (ja) | 2013-09-24 | 2013-09-24 | 回路構成体 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015045768A1 true WO2015045768A1 (ja) | 2015-04-02 |
Family
ID=52742915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/073242 WO2015045768A1 (ja) | 2013-09-24 | 2014-09-03 | 回路構成体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9635754B2 (ja) |
EP (1) | EP3051641A4 (ja) |
JP (1) | JP5958768B2 (ja) |
CN (1) | CN105580226B (ja) |
WO (1) | WO2015045768A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6593597B2 (ja) * | 2016-03-16 | 2019-10-23 | 株式会社オートネットワーク技術研究所 | 回路構成体 |
JP6667105B2 (ja) * | 2016-04-15 | 2020-03-18 | 株式会社オートネットワーク技術研究所 | 回路基板、回路構成体、及び回路基板の製造方法 |
KR101989859B1 (ko) * | 2016-12-15 | 2019-09-30 | 주식회사 아모그린텍 | 파워 릴레이 어셈블리 |
JP6988729B2 (ja) * | 2018-07-31 | 2022-01-05 | 株式会社オートネットワーク技術研究所 | 電気接続箱 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH066928A (ja) * | 1991-10-18 | 1994-01-14 | Yazaki Corp | 電気接続箱の防水シール方法 |
JP2003164039A (ja) | 2001-11-26 | 2003-06-06 | Auto Network Gijutsu Kenkyusho:Kk | 回路構成体及びその製造方法 |
JP2004248446A (ja) * | 2003-02-14 | 2004-09-02 | Sumitomo Wiring Syst Ltd | 回路構成体 |
JP2006203977A (ja) * | 2005-01-18 | 2006-08-03 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JP2007135385A (ja) * | 2005-10-14 | 2007-05-31 | Auto Network Gijutsu Kenkyusho:Kk | 電気接続箱 |
JP2007306672A (ja) | 2006-05-09 | 2007-11-22 | Auto Network Gijutsu Kenkyusho:Kk | 回路構成体 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07336843A (ja) * | 1994-06-09 | 1995-12-22 | Yazaki Corp | 電気接続箱 |
DE10254910B4 (de) | 2001-11-26 | 2008-12-24 | AutoNetworks Technologies, Ltd., Nagoya | Schaltkreisbildende Einheit und Verfahren zu deren Herstellung |
JP4022440B2 (ja) * | 2002-07-01 | 2007-12-19 | 株式会社オートネットワーク技術研究所 | 回路ユニット |
JP2006005096A (ja) * | 2004-06-16 | 2006-01-05 | Auto Network Gijutsu Kenkyusho:Kk | 回路構成体 |
JP4594198B2 (ja) * | 2005-09-02 | 2010-12-08 | 株式会社オートネットワーク技術研究所 | 電気接続箱 |
US20080160754A1 (en) * | 2006-12-27 | 2008-07-03 | International Business Machines Corporation | Method for fabricating a microelectronic conductor structure |
CN102726126A (zh) * | 2010-02-01 | 2012-10-10 | 古河电气工业株式会社 | 车载电气连接箱用金属芯基板 |
-
2013
- 2013-09-24 JP JP2013196765A patent/JP5958768B2/ja not_active Expired - Fee Related
-
2014
- 2014-09-03 CN CN201480052540.2A patent/CN105580226B/zh not_active Expired - Fee Related
- 2014-09-03 US US15/024,395 patent/US9635754B2/en active Active
- 2014-09-03 EP EP14848339.9A patent/EP3051641A4/en not_active Withdrawn
- 2014-09-03 WO PCT/JP2014/073242 patent/WO2015045768A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH066928A (ja) * | 1991-10-18 | 1994-01-14 | Yazaki Corp | 電気接続箱の防水シール方法 |
JP2003164039A (ja) | 2001-11-26 | 2003-06-06 | Auto Network Gijutsu Kenkyusho:Kk | 回路構成体及びその製造方法 |
JP2004248446A (ja) * | 2003-02-14 | 2004-09-02 | Sumitomo Wiring Syst Ltd | 回路構成体 |
JP2006203977A (ja) * | 2005-01-18 | 2006-08-03 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JP2007135385A (ja) * | 2005-10-14 | 2007-05-31 | Auto Network Gijutsu Kenkyusho:Kk | 電気接続箱 |
JP2007306672A (ja) | 2006-05-09 | 2007-11-22 | Auto Network Gijutsu Kenkyusho:Kk | 回路構成体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3051641A4 |
Also Published As
Publication number | Publication date |
---|---|
EP3051641A4 (en) | 2016-10-12 |
US20160242275A1 (en) | 2016-08-18 |
US9635754B2 (en) | 2017-04-25 |
CN105580226B (zh) | 2018-02-23 |
JP5958768B2 (ja) | 2016-08-02 |
EP3051641A1 (en) | 2016-08-03 |
CN105580226A (zh) | 2016-05-11 |
JP2015065722A (ja) | 2015-04-09 |
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