WO2023073809A1 - 電子制御装置 - Google Patents
電子制御装置 Download PDFInfo
- Publication number
- WO2023073809A1 WO2023073809A1 PCT/JP2021/039500 JP2021039500W WO2023073809A1 WO 2023073809 A1 WO2023073809 A1 WO 2023073809A1 JP 2021039500 W JP2021039500 W JP 2021039500W WO 2023073809 A1 WO2023073809 A1 WO 2023073809A1
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- WIPO (PCT)
- Prior art keywords
- housing
- substrate
- electronic control
- control device
- shield material
- Prior art date
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- 239000000758 substrate Substances 0.000 claims abstract description 88
- 239000000463 material Substances 0.000 claims abstract description 86
- 239000011231 conductive filler Substances 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims description 33
- 230000006835 compression Effects 0.000 claims description 29
- 230000005670 electromagnetic radiation Effects 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 description 3
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 0.000 description 3
- 238000000848 angular dependent Auger electron spectroscopy Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0039—Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing
Definitions
- the present invention relates to an electronic control device.
- An electronic control unit with electronic components that control the vehicle is installed in the vehicle.
- ADAS advanced driving assistance systems
- AD automatic driving
- Electronic components such as CPUs with high operating frequencies mounted in ADAS or AD electronic control units are one source of electromagnetic radiation.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-200003 describes that a plurality of connecting portions for connecting the housing and the front surface and the back surface of the wiring board are provided, and the wiring substrate is sandwiched between the connecting portions.
- the purpose is to provide an electronic control device that can reduce the leakage of electromagnetic radiation to the outside of the housing.
- an electronic control device includes a substrate on which electronic components are mounted, a housing for housing the substrate, and a conductive filler filled between the substrate and the housing. and a shielding material electrically connecting the substrate and the housing. Then, the shield material has a locally higher density of the conductive filler and a low impedance region having a lower impedance than other portions.
- FIG. 1 is a plan view showing an electronic control device according to a first embodiment
- FIG. 1 is a cross-sectional view of an electronic control device according to a first embodiment
- FIG. 3 is a schematic diagram showing a low compression region of the electronic control device according to the first embodiment
- FIG. 3 is a schematic diagram showing a high compression region of the electronic control device according to the first embodiment
- It is a perspective view showing an electronic control unit according to a second embodiment.
- FIG. 7 is a cross-sectional view showing an electronic control device according to a second embodiment
- FIG. 11 is a cross-sectional view showing an electronic control unit according to a third embodiment;
- FIG. 11 is a plan view showing a substrate of an electronic control device according to a fourth embodiment; It is a cross-sectional view showing an electronic control unit according to a fourth embodiment.
- FIG. 11 is a plan view showing a board of an electronic control device according to a fifth embodiment; 11A to 11C are explanatory diagrams showing the manufacturing method of the electronic control device according to the fifth embodiment.
- FIG. 11 is a perspective view showing an electronic control device according to a sixth embodiment;
- FIG. 11 is a cross-sectional view showing an electronic control device according to a sixth embodiment;
- Embodiments of the electronic control unit will be described below with reference to FIGS. 1 to 13.
- FIG. 1 the same code
- FIG. 1 is a plan view showing an electronic control device
- FIG. 2 is a sectional view showing the electronic control device.
- the device shown in FIG. 1 is an electronic control device that is mounted on a vehicle and has an electronic circuit that controls the vehicle.
- the electronic control device 10 includes a base 1 forming a housing, a substrate 2 on which electronic components 4 such as semiconductor components are mounted, and a shield material 3 .
- a substrate 2 is housed in the base 1 .
- a base 1 representing the first housing is formed in the shape of a container with one side open.
- the base 1 has a side portion 1a surrounding one open surface.
- One of the four side portions 1a of the base 1 is formed with an opening 1b.
- the base 1 is formed of a metal member.
- a mounting portion 6a on which a connector 6 (see FIG. 8) is mounted is provided at a portion of the substrate 2 facing the opening 1b formed in the base 1.
- the opening 1b of the base 1 faces the connector 6 (see FIG. 8) mounted on the board 2.
- a shielding material 3 is filled between the base 1 and the substrate 2.
- the shield material 3 is arranged at least near the mounting portion 6a on the substrate 2, that is, at a position facing the opening 1b of the base 1.
- the shield material 3 electrically connects the base 1 and the substrate 2 . It should be noted that the coating height of the shield material 3 according to the first embodiment is set to be uniform.
- a plurality of projections 20 are formed on the portion of the base 1 where the shield material 3 is provided.
- the protrusion 20 protrudes toward the substrate 2 from one surface of the base 1 facing the substrate 2 .
- the protrusion 20 presses the shield material 3 provided between the substrate 2 and the base 1 .
- the shield material 3 is formed with a high compression region 31 pressed by the projections 20 and a low compression region 30 not pressed by the projections 20 .
- FIG. 3 is a schematic diagram showing a low compression region 30 of the shield material 3
- FIG. 4 is a schematic diagram showing a high compression region 31 of the shield material 3.
- the shield material 3 has a base material 3a and conductive fillers 3b contained in the base material 3a.
- the density of the conductive fillers 3b in the high compression region 31 is higher than the density of the conductive fillers 3b in the low compression region 30.
- the distance between the conductive fillers 3 b in the high compression region 31 is smaller than the distance between the conductive fillers 3 b in the low compression region 30 .
- the conductive path L1 formed by connecting the conductive fillers 3b in the high compression region 31 is better than the conductive path L1 in the low compression region 30.
- FIG. As a result, the impedance of high compression region 31 is lower than the impedance of low compression region 30 . Therefore, the shield material 3 is formed with a low impedance region (high compression region 31) where the impedance is locally low and a normal impedance region (low compression region 30).
- the electromagnetic radiation 5 emitted from the electronic component 4 is prevented from leaking out of the housing of the electronic control device 10. can be reduced. Further, as described above, by providing the shield material 3 at least in the opening 1b of the base 1, it is possible to reduce the leakage of the electromagnetic radiation 5 to the outside through the opening 1b of the base 1.
- Form-In-Place Gasket that adheres both sides of the base 1 and the substrate 2
- Cured-In-Place Gasket that adheres only one side, CIPG
- Various materials such as silicone, epoxy, acrylic, etc. can be selected as the material of the base material 3a depending on the mounting environment.
- Various materials such as silver, copper, aluminum, nickel, and graphite can be selected as the conductive filler 3b.
- the conductive filler 3b may be subjected to surface treatment such as nickel plating or copper plating.
- the high compression regions 31 can be provided at a plurality of locations.
- the interval between two adjacent protrusions 20, 20 in the plurality of protrusions 20, that is, the interval H between the highly compressed regions 31 is set to be half or less of the wavelength of the electromagnetic radiation 5 that is particularly desired to be suppressed. Thereby, the effect of reducing the electromagnetic radiation 5 can be improved.
- the interval H between the highly compressed regions 31, that is, the interval between the protrusions 20, is set to 107 mm or less, which is half the wavelength of 1.4 GHz.
- FIG. 5 is a perspective view showing an electronic control device
- FIG. 6 is a cross-sectional view. Parts common to the electronic control unit 10 according to the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- the electronic control unit 10A has a cover 11 that closes the upper opening of the base 1 representing the first housing.
- the base 1 and the cover 11 constitute the housing of the electronic control unit 10A.
- a cover 11 representing the second housing is formed in a substantially rectangular flat plate shape.
- the cover 11 is made of a metal member.
- the side surface portion 1a of the base 1 and the edge portion 11a of the cover 11 overlap each other.
- a portion where the base 1 and the cover 11 overlap is filled with a shielding material 3 .
- the gap between the base 1 and the cover 11 can be closed with the shield material 3 .
- a plurality of protrusions 20 are provided on the surface of the base 1 facing the cover 11 .
- the protrusion 20 protrudes from the surface of the base 1 toward the cover 11 .
- the protrusion 20 then presses the shield material 3 .
- the shield material 3 is formed with a high compression region 31 pressed by the projections 20 and a low compression region 30 not pressed by the projections 20 .
- the electronic control unit 10A according to the second embodiment it is possible to provide a low impedance region (high compression region 31) where the impedance is locally low and a normal impedance region (low compression region 30). .
- a low impedance region high compression region 31
- a normal impedance region low compression region 30
- the electromagnetic radiation 5 is emitted not only from the opening 1b facing the connector 6 in the housing, but also from the gap between the base 1 and the cover 11. Leakage to the outside can also be reduced.
- FIG. 7 is a cross-sectional view showing the electronic control unit. Parts common to the electronic control device 10 according to the first embodiment and the electronic control device 10A according to the second embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- part of the substrate 2 is sandwiched between the base 1 and the cover 11.
- the shield material 3 is filled not only between the base 1 and the substrate 2 but also between the cover 11 and the substrate 2 .
- the shield material 3 electrically connects the base 1 and the substrate 2 and electrically connects the cover 11 and the substrate 2 .
- a first projection 20 is formed at a portion of the base 1 where the shield material 3 is provided, and a second projection 21 is formed at a portion of the cover 11 where the shield material 3 is provided.
- the first protrusion 20 protrudes toward the substrate 2 from the surface of the base 1 facing the substrate 2 .
- the second protrusion 21 protrudes toward the substrate 2 from the surface of the cover 11 facing the substrate 2 .
- the shielding material 3 filled between the base 1 and the substrate 2 and the shielding material 3 filled between the cover 11 and the substrate 2 have the low compression region 30, the first projections 20 and the A highly compressed region 31 is formed which is pressed against the second projection 21 .
- both surfaces of the substrate 2 can be provided with low-impedance regions (high-compression regions 31) in which the impedance is locally low.
- the positions of the low compression region 30 and the high compression region 31 are determined by the positions of the first projection 20 and the second projection 21. It is preferable that the first protrusion 20 and the second protrusion 21 are provided at positions that do not face each other with the substrate 2 interposed therebetween. Also, the heights of the first protrusion 20 and the second protrusion 21 protruding from the base 1 or the cover 11 may be the same or different. That is, the compressibility of the shield material 3 by the first protrusions 20 and the compressibility of the shield material 3 by the second protrusions 21 may be set to the same value or may be set to different values.
- FIG. 8 is a plan view showing a substrate of the electronic control device
- FIG. 9 is a cross-sectional view. Parts common to the electronic control unit 10 according to the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- an electronic component 4 and a connector 6 are mounted on the substrate 2 of the electronic control device 10C according to the fourth embodiment.
- a connector 6 is provided on one side of the substrate 2 .
- a screw hole 2 a for fixing to the base 1 is formed in the substrate 2 .
- the screw holes 2 a are provided at the four corners of the substrate 2 .
- a fixing screw 7 is inserted into the screw hole 2a of the substrate 2.
- the substrate 2 is fixed to the end of the base 1 with fixing screws 7 .
- a fixing screw 7 electrically connects the substrate 2 and the base 1 . Therefore, the impedance is low at the portions of the substrate 2 and the base 1 where the fixing screws 7 are provided. That is, the fixing screw 7 serves as a contact portion that electrically connects the substrate 2 and the base 1 .
- a shielding material 3 is filled between the base 1 and the substrate 2 . As shown again in FIG. 8, the shield material 3 is arranged on one side of the substrate 2 on which the connector 6 is mounted. Shielding material 3 is placed between connector 6 and electronic component 4, which is a source of electromagnetic radiation.
- a projection 20 projecting toward the substrate 2 is provided at a portion of the base 1 where the shield material 3 is arranged.
- a low impedance region (highly compressed region 31) in which the impedance is locally low is formed in the shield material 3 by the projection 20.
- the protrusion 20 is formed between two fixing screws 7 which are contact points for connecting the substrate 2 and the base 1 .
- the distance H between the protrusion 20 and the fixing screw 7 is set to less than half the wavelength of the electromagnetic radiation 5 that is particularly desired to be suppressed. Thereby, the electromagnetic radiation 5 leaking from the connector 6 can be reduced.
- the present invention is not limited to this.
- various fixing methods such as pressing fixation via a rubber material, press-fit fixation, sandwich fixation between the base 1 and the cover 11 , and the like may be applied.
- FIGS. 10 to 11C are plan views showing the substrate of the electronic control device, and FIGS. 11A to 11C are cross-sectional views showing the method of manufacturing the electronic control device. Parts common to the electronic control unit 10 according to the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- an electronic component 4 and a connector 6 are mounted on the substrate 2 of the electronic control device 10D according to the fifth embodiment.
- a connector 6 is provided on one side of the substrate 2 .
- a shield material 3 is arranged on one side of the board 2 on which the connector 6 is mounted.
- a shielding material 3 is placed between the connector 6 and the electronic component 4 which is the source of electromagnetic radiation.
- a shield material 3 is then interposed between the substrate 2 and the base 1 (see FIG. 11C). As the shield material 3, CIPG is applied.
- a shield material 3 is applied by a coating device P to one surface of the substrate 2 facing the base 1 .
- shielding material 3 is applied between electronic component 4 and connector 6 .
- the shield material 3 applied to the substrate 2 has an area (hereinafter referred to as a high application area) 3C where the application height is locally higher than other areas.
- a plurality of high application areas 3C may be provided. 10 and 11A, the interval H between two adjacent high coverage areas 3C in a plurality of high coverage areas 3C is set at half or less of the wavelength of the electromagnetic radiation 5 to be particularly suppressed.
- the substrate 2 and the base 1 are brought closer together as shown in FIG. 11B.
- the surface of the portion of the base 1 according to the fifth embodiment on which the shield material 3 is arranged is formed flat.
- the substrate 2 is fixed to the base 1 as shown in FIG. 11C.
- a shield material 3 is thereby interposed between the substrate 2 and the base 1 .
- the distance between the substrate 2 and the base 1 when the substrate 2 and the base 1 are overlapped is set uniformly.
- the shield material 3 is formed with a high-compression region 31, that is, a low-impedance region, which is a region with a high density of the conductive fillers 3b, and a low-compression region 30, which is a region with a low density of the conductive fillers 3b.
- a high-compression region 31 that is, a low-impedance region, which is a region with a high density of the conductive fillers 3b
- a low-compression region 30 which is a region with a low density of the conductive fillers 3b.
- a high application area 3C may be provided in which the height of local application is increased as shown in FIG.
- FIG. 12 is a perspective view showing an electronic control device
- FIG. 13 is a sectional view. Parts common to the electronic control unit 10 according to the first embodiment are denoted by the same reference numerals, and overlapping descriptions are omitted.
- the base 1 and the cover 11 that constitute the housing of the electronic control device 10E according to the sixth embodiment are fixed via fixing screws 7.
- the method of fixing the base 1 and the cover 11 is not limited to the use of the fixing screws 7, and various other fixing methods such as crimping and engagement using engaging claws can be applied.
- a shielding material 3 is filled between the base 1 and the substrate 2 .
- a shielding material 3 is filled between the cover 11 and the substrate 2 .
- the shield material 3 electrically connects the base 1 and the substrate 2 and electrically connects the cover 11 and the substrate 2 .
- a first projection 20 is formed at a portion of the base 1 where the shield material 3 is provided, and a second projection 21 is formed at a portion of the cover 11 where the shield material 3 is provided.
- the first protrusion 20 protrudes toward the substrate 2 from the surface of the base 1 facing the substrate 2 .
- the second protrusion 21 protrudes toward the substrate 2 from the surface of the cover 11 facing the substrate 2 .
- the shielding material 3 filled between the base 1 and the substrate 2 and the shielding material 3 filled between the cover 11 and the substrate 2 have the low-compression region 30, the first projections 20 and the second projections 20, respectively.
- a highly compressed region 31 is formed which is pressed against the two projections 21 .
- a sealing member 8 is interposed between the side surface portion 1a of the base 1 and the edge portion 11a of the cover 11 where the base 1 and the cover 11 overlap.
- the sealing member 8 is arranged outside the shield material 3 provided on the base 1 and the cover 11 .
- the sealing member 8 prevents water, dust, etc. from entering the housing composed of the base 1 and the cover 11 .
- the conductive filler 3b of the shield material 3 may be corroded by the external environment.
- the shield material 3 can be prevented from being exposed to the external environment, and the corrosion of the conductive filler 3b can be prevented.
- Base (first housing) 1a... Side portion 1b... Opening 2... Substrate 2a... Screw hole 3... Shielding material 3a... Base material 3b... Conductive filler 3C... High application area 4... Electronic components 5... Electromagnetic radiation 6... Connector 6a... Mounting part 7... Fixing screw 8... Seal member 10, 10A, 10B, 10C, 10D, 10E... Electronic control device 11... Cover ( Second housing), 11a... Edge, 20... Protrusion (first protrusion), 21... Second protrusion, 30... Low compression area, 31... High compression area (low impedance area), L1... Conductive path
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- Engineering & Computer Science (AREA)
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
まず、第1の実施の形態例(以下、「本例」という。)にかかる電子制御装置の構成について図1から図4を参照して説明する。
図1は、電子制御装置を示す平面図、図2は、電子制御装置を示す断面図である。
図3及び図4に示すように、シールド材料3は、基材3aと、この基材3aの中に含有される導電性フィラー3bと、を有している。高圧縮領域31の導電性フィラー3bの密度は、低圧縮領域30の導電性フィラー3bの密度よりも高くなっている。そのため、高圧縮領域31における導電性フィラー3b間の距離は、低圧縮領域30における導電性フィラー3b間の距離よりも小さくなる。これにより、高圧縮領域31における導電性フィラー3b間を接続することで形成される導電パスL1は、低圧縮領域30の導電パスL1よりも良好となる。その結果、高圧縮領域31のインピーダンスは、低圧縮領域30のインピーダンスよりも低くなる。そのため、シールド材料3には、局所的にインピーダンスが低くなる低インピーダンス領域(高圧縮領域31)と、通常のインピーダンス領域(低圧縮領域30)が形成される。
次に、図5及び図6を参照して第2の実施に形態例にかかる電子制御装置について説明する。
図5は、電子制御装置を示す斜視図、図6は、断面図である。なお、第1の実施の形態例にかかる電子制御装置10と共通する部分には、一の符号を付して重複した説明を省略する。
次に、図7を参照して第3の実施の形態例にかかる電子制御装置について説明する。
図7は、電子制御装置を示す断面図である。なお、第1の実施の形態例にかかる電子制御装置10及び第2の実施の形態例にかかる電子制御装置10Aと共通する部分には、一の符号を付して重複した説明を省略する。
次に、図8及び図9を参照して第4の実施に形態例にかかる電子制御装置について説明する。
図8は、電子制御装置の基板を示す平面図、図9は、断面図である。なお、第1の実施の形態例にかかる電子制御装置10と共通する部分には、一の符号を付して重複した説明を省略する。
次に、図10から図11Cを参照して第5の実施に形態例にかかる電子制御装置について説明する。
図10は、電子制御装置の基板を示す平面図、図11Aから図11Cは、電子制御装置の製造方法を示す断面図である。なお、第1の実施の形態例にかかる電子制御装置10と共通する部分には、一の符号を付して重複した説明を省略する。
まず、図11Aに示すように、基板2におけるベース1と対向する一面に塗布装置Pによってシールド材料3を塗布する。図10に示すように、シールド材料3は、電子部品4とコネクタ6との間に塗布される。また、図11Aに示すように、基板2に塗布されたシールド材料3は、局所的に塗布の高さが他のエリアよりも高いエリア(以下、高塗布エリアという)3Cを有している。高塗布エリア3Cは、複数設けてもよい。そして、図10及び図11Aに示すように、複数の高塗布エリア3Cにおける隣り合う2つの高塗布エリア3Cの間隔Hは、特に抑制したい電磁放射5の波長の半分以下に設定される。
次に、図12及び図13を参照して第6の実施に形態例にかかる電子制御装置について説明する。
図12は、電子制御装置を示す斜視図、図13は、断面図である。なお、第1の実施の形態例にかかる電子制御装置10と共通する部分には、一の符号を付して重複した説明を省略する。
Claims (13)
- 電子部品が搭載された基板と、
前記基板を収納する筐体と、
前記基板と前記筐体との間に充填され、導電性フィラーを有し、前記基板と前記筐体を電気的に接続するシールド材料と、を備え、
前記シールド材料には、前記導電性フィラーの密度が他の箇所よりも高く、インピーダンスが低い低インピーダンス領域が形成されている
電子制御装置。 - 前記筐体は、前記シールド材料を押圧する突起を有し、
前記低インピーダンス領域は、前記突起により前記シールド材料が押圧された高圧縮領域である
請求項1に記載の電子制御装置。 - 前記突起は、前記筐体に複数設けられ、
複数の前記突起における隣り合う2つの突起の間隔は、低減を行う電磁放射の波長の半分以下に設定される
請求項2に記載の電子制御装置。 - 前記筐体の両端部に配置され、前記基板と前記筐体を電気的に接続する接点部を備え、
前記突起は、2つの前記接点部の間に形成される
請求項2に記載の電子制御装置。 - 前記接点部と前記突起の間隔は、低減を行う電磁放射の波長の半分以下に設定される
請求項4に記載の電子制御装置。 - 前記接点部は、前記基板を前記筐体に固定する固定ねじである
請求項4に記載の電子制御装置。 - 前記基板には、コネクタが搭載され、
前記シールド材料は、前記基板と前記コネクタとの間に設けられる
請求項1に記載の電子制御装置。 - 前記筐体には、開口部が形成され、
前記シールド材料は、少なくとも前記筐体に形成した前記開口部と対向する位置に設けられる
請求項1に記載の電子制御装置。 - 前記筐体は、第1筐体と、前記第1筐体と重なり合う第2筐体と、を有し、
前記シールド材料は、第1筐体と前記第2筐体が重なり合う箇所にも充填されて、前記第1筐体と前記第2筐体を電気的に接続し、
前記第1筐体及び前記第2筐体のうち少なくとも一方には、前記シールド材料を押圧する突起が設けられる
請求項1に記載の電子制御装置。 - 前記基板の一部は、前記第1筐体と前記第2筐体により挟持され、
前記シールド材料は、前記基板と前記第1筐体との間、前記基板と前記第2筐体との間に充填され、
前記第1筐体は、前記シールド材料を押圧する第1突起を有し、
前記第2筐体は、前記シールド材料を押圧する第2突起を有する
請求項9に記載の電子制御装置。 - 前記第1突起と前記第2突起は、前記基板を間に挟んで対向しない位置に配置される
請求項10に記載の電子制御装置。 - 前記シールド材料は、前記基板又は前記筐体に塗布され、
前記基板又は前記筐体に塗布された前記シールド材料は、局所的に塗布の高さが他のエリアよりも高い高塗布エリアを有し、
前記高塗布エリアが前記低インピーダンス領域となる
請求項1に記載の電子制御装置。 - 前記シールド材料は、キュアードインプレイスガスケットである
請求項1に記載の電子制御装置。
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JP2002076667A (ja) * | 2000-08-25 | 2002-03-15 | Three Bond Co Ltd | 電磁波シールド構造及びその製造方法 |
JP2009543356A (ja) * | 2006-07-04 | 2009-12-03 | スリーエム イノベイティブ プロパティズ カンパニー | 弾性及び接着性を有する電磁波遮蔽ガスケット |
JP2020019876A (ja) * | 2018-07-31 | 2020-02-06 | 株式会社ダイセル | 成形体およびその製造方法 |
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JP2002076667A (ja) * | 2000-08-25 | 2002-03-15 | Three Bond Co Ltd | 電磁波シールド構造及びその製造方法 |
JP2009543356A (ja) * | 2006-07-04 | 2009-12-03 | スリーエム イノベイティブ プロパティズ カンパニー | 弾性及び接着性を有する電磁波遮蔽ガスケット |
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