WO2022190437A1 - 電子制御装置 - Google Patents
電子制御装置 Download PDFInfo
- Publication number
- WO2022190437A1 WO2022190437A1 PCT/JP2021/035128 JP2021035128W WO2022190437A1 WO 2022190437 A1 WO2022190437 A1 WO 2022190437A1 JP 2021035128 W JP2021035128 W JP 2021035128W WO 2022190437 A1 WO2022190437 A1 WO 2022190437A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic control
- control device
- recess
- conductive adhesive
- circuit board
- Prior art date
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 79
- 230000001070 adhesive effect Effects 0.000 claims abstract description 79
- 239000011347 resin Substances 0.000 claims abstract description 78
- 229920005989 resin Polymers 0.000 claims abstract description 78
- 239000002184 metal Substances 0.000 claims abstract description 54
- 239000003566 sealing material Substances 0.000 claims abstract description 52
- 239000000565 sealant Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 11
- 230000003068 static effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000009736 wetting Methods 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000000758 substrate Substances 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
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004078 waterproofing Methods 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
- H05K9/0067—Devices for protecting against damage from electrostatic discharge
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/065—Hermetically-sealed casings sealed by encapsulation, e.g. waterproof resin forming an integral casing, injection moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
- H05K5/0052—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by joining features of the housing parts
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
- H05K5/006—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by features for holding the PCB within the housing
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0069—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
- H05K7/142—Spacers not being card guides
Definitions
- the present invention relates to an electronic control device.
- in-vehicle electronic control units have adopted a direct fixing structure that shortens the length of the connection cable between the control unit and the sensor and between the actuators, and the use of resin for the housing (for example, patented Reference 1) is progressing.
- the direct fixing structure of the in-vehicle electronic control unit includes direct fixing to the engine body, direct fixing to the transmission, and the like.
- the use of resin for the housing is intended to reduce the weight by replacing metal materials with high specific gravity, which have been widely used in the past, with resin materials.
- Patent Document 1 describes a structure for grounding by providing a convex structure from a metal housing and bringing it close to a circuit board.
- An object of the present invention is to provide an electronic control device that can discharge static electricity applied to a metal housing to a circuit ground with low impedance.
- an electronic control device of the present invention includes a non-conductive resin housing, a circuit board having a circuit ground, and held by the resin housing; a conductive metal housing attached to a resin housing; a waterproof sealing material for sealing and waterproofing the resin housing and the metal housing; and a conductive adhesive that electrically connects the body and the circuit ground at multiple points.
- static electricity applied to the metal housing can be discharged to the circuit ground with low impedance.
- FIG. 1 is a schematic perspective view of a transmission to which an electronic control unit is attached;
- FIG. 1 is a perspective view of an electronic control unit according to an embodiment of the invention;
- FIG. 1 is an example of an exploded perspective view of an electronic control unit according to an embodiment of the present invention;
- FIG. 3 is a top view of an electronic control unit according to Comparative Example 1;
- FIG. 4B is a cross-sectional view of the electronic control unit shown in FIG. 4A;
- FIG. 11 is a top view of an electronic control unit according to Comparative Example 2;
- 5B is a cross-sectional view of the electronic control unit shown in FIG. 5A;
- FIG. 1 is a top view of an electronic control unit according to a first embodiment of the invention;
- FIG. 6B is a cross-sectional view of the electronic control unit shown in FIG. 6A;
- FIG. FIG. 5 is a top view of an electronic control unit according to a second embodiment of the invention;
- 7B is a cross-sectional view of the electronic control unit shown in FIG. 7A;
- FIG. It is a top view of the electronic control unit by the 3rd Embodiment of this invention.
- 8B is a cross-sectional view of the electronic control unit shown in FIG. 8A;
- FIG. It is a top view of the electronic control unit by the 4th Embodiment of this invention.
- 9B is a cross-sectional view of the electronic control unit shown in FIG. 9A;
- FIG. It is a top view of the electronic control unit by the 5th Embodiment of this invention.
- FIG. 10B is a cross-sectional view of the electronic control unit shown in FIG. 10A; FIG. It is a top view of the electronic control unit by the 6th Embodiment of this invention.
- 11B is a cross-sectional view of the electronic control unit shown in FIG. 11A.
- FIG. It is a top view of the electronic control unit by the 7th Embodiment of this invention.
- 12B is a cross-sectional view of the electronic control unit shown in FIG. 12A;
- FIG. FIG. 20 is a top view of the vicinity of a rectangular depression of an electronic control device according to an eighth embodiment of the present invention;
- FIG. 20 is a top view of the vicinity of an arcuate depression of an electronic control device according to an eighth embodiment of the present invention;
- FIG. 20 is a top view of the vicinity of the U-shaped depression of the electronic control unit according to the eighth embodiment of the present invention; It is a top view of the electronic control unit by the 9th Embodiment of this invention.
- 14B is a cross-sectional view of the electronic control unit shown in FIG. 14A;
- FIG. FIG. 20 is a top view of an electronic control device according to a tenth embodiment of the present invention;
- 15B is a cross-sectional view of the electronic control unit shown in FIG. 15A;
- FIG. FIG. 20 is a top view of the vicinity of the rectangular hole of the electronic control device according to the eleventh embodiment of the present invention;
- FIG. 20 is a top view of the vicinity of the arcuate hole of the electronic control unit according to the eleventh embodiment of the present invention.
- FIG. 20 is a top view of the vicinity of the U-shaped hole of the electronic control unit according to the eleventh embodiment of the present invention.
- the electronic control unit controls, for example, actuators (solenoid valves, etc.) used in engines, transmissions, and the like.
- actuators solenoid valves, etc.
- symbol shows the same part.
- the purpose of this embodiment is to replace the material on the vehicle fixed side of the electronic control unit with a resin material, and to prevent ESD (Electro-Static Discharge) when a conductive adhesive is placed between the metal housing and the circuit board.
- ESD Electro-Static Discharge
- the transmission 103 includes a mechanism section (not shown) that shifts and transmits rotational driving force of an engine or the like, and a transmission case 131 that houses the mechanism section.
- Electronic control unit 100 is attached to transmission case 131 .
- a connection cable 133 electrically connects between the transmission connectors 132 (the electronic control device side and the transmission side).
- the conductive material (conductive adhesive 1) shown in FIG. 5B may cause a short circuit when it comes into contact with the electronic component 8, it is necessary to set a parts forbidden zone around the conductive material. In addition, it is necessary to arrange them at the edge of the circuit board 5 in order to set the component forbidden band as small as possible.
- the electronic control unit 100 that requires waterproofness has a waterproof sealing material 9 arranged on the outer periphery. Due to spread of the coating during assembly, it mixes with the waterproof sealing material 9 arranged on the outer periphery, the carbon content of the conductive adhesive 1 decreases, and the resistance value increases, resulting in ESD. There is concern that it may cause defects. As a countermeasure, it is possible to separate the waterproof sealant 9 and the conductive adhesive 1 from each other to prevent them from mixing.
- a conductive adhesive 1 that electrically connects the metal housing 6 and the circuit board 5 is placed at four or more places on the circuit board 5 .
- the electronic control unit 100 includes at least a non-conductive resin housing 7, a circuit board 5, a metal housing 6, a waterproof sealing material 9, and a conductive adhesive 1.
- the circuit board 5 has a circuit ground (GND pattern 4 ) and is held by the resin casing 7 .
- the metal housing 6 covers the circuit board 5 and is attached to the resin housing 7 .
- the waterproof sealing material 9 seals the resin housing 7 and the metal housing 6 to make them waterproof.
- the conductive adhesive 1 is in contact with the metal housing 6 and the circuit ground (GND pattern 4), and electrically connects the metal housing 6 and the circuit ground at multiple points. As a result, the static electricity applied to the metal housing 6 can be discharged to the circuit ground at low impedance.
- the conductive adhesive 1 electrically connects the metal housing 6 and the circuit ground (GND pattern 4) at four or more locations.
- the electronic component 8 is near the upper edge (side) of the circuit board 5 in FIG. 6A and the connector 132 is near the lower edge (side) of the circuit board 5 in FIG.
- the flexible adhesive 1 is placed near the left and right edges (sides) of the circuit board 5 . Since there are two conductive adhesives 1 on each of the left and right edges (sides) of the circuit board 5, one of the two conductive adhesives 1 on each edge (side) is electrically conductive. Static electricity can be discharged even if a defect occurs.
- the conductive adhesive 1 is positioned at the edge of the circuit board 5 . This makes it possible to prevent a short circuit.
- a recess 3 is set between the conductive adhesive 1 placed on the circuit board 5 and the waterproof sealing material 9 placed on the outer periphery. That is, the electronic control unit 100 has a recess (recess 3 ) provided between the waterproof sealant 9 and the conductive adhesive 1 .
- a recess 3 provided between a conductive adhesive 1 placed on a circuit board 5 and a waterproof sealing material 9 is formed into a circuit.
- the structure is such that it is inserted into the lower side of the substrate 5 .
- the recess is the recess 3 provided in the resin housing 7 , and the recess 3 is below the circuit board 5 .
- the unit size can be made smaller than in the second embodiment, and the waterproof sealing material 9 and the conductive adhesive 1 can be prevented from being mixed, so that the occurrence of ESD defects can be more reliably prevented. It is possible to realize a highly reliable electronic control device.
- FIGS. 9A and 9B In the shape of the second embodiment, as shown in FIGS. 9A and 9B, for example, a wall 10 is provided on the waterproof sealing material 9 side and a depression 3 is provided on the conductive adhesive 1 side. As a result, the waterproof sealing material 9 is suppressed from wetting and spreading by the wall 10, and the wet-spreading conductive adhesive 1 falls into the recess 3, so that the waterproof sealing material 9 and the conductive adhesive 1 are mixed. can be prevented.
- the unit size can be made smaller, and ESD countermeasures can be obtained.
- the electronic control unit 100 has a protrusion (wall 10) adjacent to the inner wall of the recess (recess 3) on the side of the waterproof sealant 9. As shown in FIG. This makes it difficult for the waterproof sealing material 9 to flow into the recess (recess 3), so that the size of the recess can be reduced in consideration of only the inflow of the conductive adhesive 1.
- the viscosities of the conductive adhesive 1 and the waterproof sealing material 9 are v1 and v9, respectively, with v9 being greater than v1.
- the protrusion (wall 10) is adjacent to the inner wall of the recess (hollow 3) on the side of the conductive adhesive 1 or waterproof sealant 9, whichever has higher viscosity (waterproof sealant 9). This makes it easier for the conductive adhesive 1 with low viscosity to flow into the recess (recess 3).
- the height h of the wall 10 is set higher than the thickness t of the waterproof sealing material for the metal housing 6.
- the recess 3 is provided on the waterproof sealing material 9 side and the wall 10 is provided on the conductive adhesive 1 side.
- the protrusion (wall 10) is provided on the resin housing 7 and adjoins the inner wall of the recess (recess 3) on the conductive adhesive 1 side.
- the wet-spread waterproof sealing material 9 falls into the recess 3, and the wet-spread conductive adhesive 1 is suppressed by the wall 10, so that the same effect as in the fourth embodiment can be obtained.
- the wall 10 in this embodiment can also be used as a positioning mechanism for the circuit board 5 during assembly.
- the viscosities of the conductive adhesive 1 and the waterproof sealing material 9 are v1 and v9, respectively, with v1 being greater than v9.
- the protrusion (wall 10) is adjacent to the inner wall of the recess (hollow 3) on the side of the conductive adhesive 1 or the waterproof sealing material 9, whichever has the higher viscosity (conductive adhesive 1). This makes it easier for the waterproof sealing material 9 with a low viscosity to flow into the recess (recess 3).
- the wall 10 is provided with a taper 12, as shown in FIGS. 12A and 12B.
- the projection (wall 10) is provided with a taper 12 .
- the wall 10 provided in the resin housing 7 can be improved in moldability, so that the defect rate during molding can be reduced. can be done.
- the shape of the depression 3 is rectangular, arc-shaped, or U-shaped, as shown in FIGS. 13A, 13B, and 13C.
- the cross section of the recess (hollow 3) seen in the depth direction is rectangular. As a result, for example, processing of the concave portion (dent 3) is facilitated.
- the cross-section of the recess (hollow 3) seen in the depth direction includes an arc shape.
- the cross-section of the recess (indentation 3) seen in the depth direction includes a curved line along the outer periphery of the conductive adhesive 1. As shown in FIG. This makes it easier for the conductive adhesive 1 to radially flow into the recesses (recesses 3).
- the cross-section of the recess (hollow 3) seen in the depth direction is U-shaped (U-shaped).
- the cross-section of the recess (indentation 3 ) seen in the depth direction includes three straight lines surrounding the conductive adhesive 1 . This prevents, for example, the conductive adhesive 1 from wetting and spreading in the longitudinal direction of the circuit board 5 of FIG. 13C.
- a notch 13 is provided in the circuit board to provide a space between the waterproof sealant 9 and the conductive adhesive 1.
- FIG. In other words, the recess is the notch 13 provided in the circuit board 5 .
- the wet and spread conductive adhesive 1 falls into this space, so that the same effect as in the fourth embodiment can be obtained. Further, by not providing the recess 3 formed from the resin housing 7, improvement in moldability of the resin housing 7 can be expected.
- circuit board 5 is provided below the surface of the resin housing 7 that contacts the waterproof sealing material 9 . As a result, for example, the distance for the waterproof sealing material 9 to reach the notch 13 is increased.
- a hole 11 is set in the circuit board 5 between the waterproof sealant 9 and the conductive adhesive 1 .
- the recess is the hole 11 provided in the circuit board 5 .
- the waterproof sealing material 9 that is wet and spread is suppressed by the thickness of the circuit board 5, and the conductive adhesive 1 falls into the hole 11 formed in the circuit board 5. Therefore, the same effect as in the fourth embodiment is obtained. can be obtained. Further, by not providing the wall 10 formed from the resin housing 7 and the depression 3, it is expected that the moldability of the resin housing is improved.
- the surface of the resin housing 7 in contact with the waterproof sealing material 9 and the surface of the resin housing 7 in contact with the circuit board 5 are on one plane. This facilitates assembly of the electronic control unit, for example.
- the shape of the hole 11 formed on the substrate is rectangular, arc-shaped, or U-shaped.
- the cross section of the recess (hole 11) seen in the depth direction is rectangular. As a result, for example, processing of the recess (hole 11) is facilitated.
- the cross section of the recess (hole 11) seen in the depth direction includes an arc shape.
- the cross-section of the recess (hole 11) seen in the depth direction includes a curved line along the perimeter of the conductive adhesive 1. FIG. This makes it easier for the conductive adhesive 1 to radially flow into the recesses (holes 11).
- the cross section of the recess (hole 11) seen in the depth direction is U-shaped (U-shaped).
- the cross-section of the recess (hole 11 ) seen in the depth direction includes three straight lines surrounding the conductive adhesive 1 . This prevents, for example, the conductive adhesive 1 from wetting and spreading in the longitudinal direction of the circuit board 5 of FIG. 16C.
- the present invention is not limited to the above-described embodiments, and includes various modifications.
- the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.
- part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
- a resin housing 7 made of a resin material, a circuit board 5 mounted with electronic components 8 held in the resin housing 7, and a metal housing covering the circuit board 5 and attached to the resin housing 7. 6, a waterproof sealing material 9 provided on the outer peripheral side of the resin housing 7 and the metal housing 6, and a conductive adhesive that electrically connects the circuit board 5 and the metal housing 6. 1, wherein the conductive adhesive 1 connects the circuit board 5 and the metal housing 6 at four or more locations.
- a resin housing 7 made of a resin material, a circuit board 5 mounted with electronic components 8 held in the resin housing 7, and a metal housing covering the circuit board 5 and attached to the resin housing 7. 6, a waterproof sealing material 9 provided on the outer peripheral side of the resin housing 7 and the metal housing 6, and a conductive adhesive that electrically connects the circuit board 5 and the metal housing 6. 1 and a recess 3 formed from the resin casing 7 between the waterproof sealing material 9 and the conductive adhesive 1, the recess 3 entering under the circuit board 5.
- An electronic control device characterized by:
- An electronic control unit characterized by:
- the height of the protrusion (wall 10) is higher than the thickness of the waterproof sealing material 9.
- the electronic control device is characterized in that.
- An electronic control device characterized by:
- a resin housing 7 made of a resin material, a circuit board 5 mounted with electronic components 8 held in the resin housing 7, and a metal housing covering the circuit board 5 and attached to the resin housing 7. 6, a waterproof sealing material 9 provided on the outer peripheral side of the resin housing 7 and the metal housing 6, and a conductive adhesive that electrically connects the circuit board 5 and the metal housing 6. 1, wherein a notch 13 is provided in the circuit board 5 between the conductive adhesive 1 and the waterproof sealing material 9.
- the hole 11 is arc-shaped.
- the hole 11 is U-shaped.
- the projection (wall 10) is made of a highly viscous adhesive and the recess, with respect to the conductive adhesive 1 and the waterproof sealing material 9.
- the material of the conductive adhesive 1 and the waterproof sealing material 9 is silicone, epoxy, acrylic, urethane, or the like.
- the material of the resin casing 7 is PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), PA (polyamide), POM (polyacetal), or the like. Control device.
- the material of the metal housing 6 is A5052, A1050, ADC12, steel, or the like.
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- Microelectronics & Electronic Packaging (AREA)
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- Casings For Electric Apparatus (AREA)
Abstract
Description
はじめに、図1,図4A,4B,図5A,5Bを用いて、本発明との比較例による電子制御装置の構成を説明する。
図6A,6Bに示すように、例えば、金属筐体6と回路基板5を電気的に接続する導電性のある接着剤1を配置し、配置箇所は回路基板5上に4箇所以上とする。
図7A,7Bに示すように、例えば、回路基板5上に配置された導電性のある接着剤1と外周に配置された防水シール材9の間に窪み3を設定する。すなわち、電子制御装置100は、防水シール材9と導電性のある接着剤1の間に設けられる凹部(窪み3)を備える。
第2の実施形態の形状において、図8A,8Bに示すように、例えば、回路基板5上に配置された導電性のある接着剤1と防水シール材9の間に設けられた窪み3を回路基板5の下側に入り込ませる構造とする。換言すれば、凹部は、樹脂筐体7に設けられる窪み3であり、窪み3は、回路基板5の下に入り込んでいる。
第2の実施形態の形状において、図9A,9Bに示すように、例えば、防水シール材9側に壁10、導電性のある接着剤1側に窪み3を設ける。これにより、防水シール材9は壁10により濡れ広がりを抑制され、濡れ広がった導電性のある接着剤1が窪み3に落ちることにより、防水シール材9と導電性のある接着剤1の混ざり合いを防止することができる。
第4の実施形態の形状において、図10A,10Bに示すように、例えば、壁10の高さhを金属筐体6に対する防水シール材の厚みtよりも高く設定する。すなわち、突起(壁10)の高さhは、防水シール材9の厚みtよりも高い。
第4の実施形態の形状において、図11A,11Bに示すように、例えば、防水シール材9側に窪み3、導電性のある接着剤1側に壁10を設ける。換言すれば、突起(壁10)は、樹脂筐体7に設けられ、導電性のある接着剤1の側の凹部(窪み3)の内壁に隣接する。
第4,5,6の実施形態の形状において、図12A,12Bに示すように、例えば、壁10にテーパー12を設ける。換言すれば、突起(壁10)には、テーパー12が設けられている。
第4,5,6,7の実施形態の形状において、図13A,13B,13Cに示すように、例えば、窪み3の形状は長方形、円弧状、コの字状がある。
図14A,14Bに示すように、回路基板に切り欠き13を設け、防水シール材9と導電性のある接着剤1の間にスペースを設ける。換言すれば、凹部は、回路基板5に設けられる切り欠き13である。
図15A,15Bに示すように、例えば、防水シール材9と導電性のある接着剤1の間の回路基板5に穴11を設定する。換言すれば、凹部は、回路基板5に設けられる穴11である。
第10の実施形態の形状において、図16A,16B,16Cに示すように、例えば、基板上に形成された穴11の形状は長方形、円弧状、コの字状がある。
2…熱伝導剤
3…窪み
4…GNDパターン
5…回路基板
6…金属筐体
7…樹脂筐体
8…電子部品
9…防水シール材
10…壁(突起)
11…穴
12…テーパー
13…切り欠き
100…電子制御装置
103…変速機
131…変速機ケース
132…コネクタ
133…接続ケーブル(ハーネス)
Claims (15)
- 非導電性の樹脂筐体と、
回路アースを有し、前記樹脂筐体に保持される回路基板と、
前記回路基板を覆い、前記樹脂筐体に取り付けられる導電性の金属筐体と、
前記樹脂筐体と前記金属筐体とをシールし、防水する防水シール材と、
前記金属筐体と前記回路アースとに接し、前記金属筐体と前記回路アースとを電気的に複数箇所で接続する導電性のある接着剤と、
を備える電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記防水シール材と前記導電性のある接着剤の間に設けられる凹部を備える
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
前記凹部は、
前記樹脂筐体に設けられる窪みであり、
前記窪みは、
前記回路基板の下に入り込んでいる
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
前記防水シール材又は前記導電性のある接着剤の側の前記凹部の内壁に隣接する突起を備える
ことを特徴とする電子制御装置。 - 請求項4に記載の電子制御装置であって、
前記突起の高さは、
前記防水シール材の厚みよりも高い
ことを特徴とする電子制御装置。 - 請求項4に記載の電子制御装置であって、
前記突起は、
前記樹脂筐体に設けられ、
前記導電性のある接着剤の側の前記凹部の内壁に隣接する
ことを特徴とする電子制御装置。 - 請求項4に記載の電子制御装置であって、
前記突起には、
テーパーが設けられている
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
深さ方向に見た前記凹部の断面は、
長方形状である
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
深さ方向に見た前記凹部の断面は、
円弧状の形状を含む
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
深さ方向に見た前記凹部の断面は、
U字状である
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
前記凹部は、
前記回路基板に設けられる切り欠きである
ことを特徴とする電子制御装置。 - 請求項2に記載の電子制御装置であって、
前記凹部は、
前記回路基板に設けられる穴である
ことを特徴とする電子制御装置。 - 請求項4に記載の電子制御装置であって、
前記突起は、
前記導電性のある接着剤と前記防水シール材のうち粘度の高い方の側の前記凹部の内壁に隣接する
ことを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記導電性のある接着剤は、
前記金属筐体と前記回路アースとを電気的に4箇所以上で接続する
ことを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記導電性のある接着剤は、
前記回路基板の縁に位置する
ことを特徴とする電子制御装置。
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JPH0897584A (ja) * | 1994-09-28 | 1996-04-12 | Matsushita Electric Ind Co Ltd | 高周波機器とローノイズブロックコンバーター |
JPH10107476A (ja) * | 1996-09-27 | 1998-04-24 | New Japan Radio Co Ltd | 高周波回路基板の接地及び電波シールド構造 |
JP2007005356A (ja) * | 2005-06-21 | 2007-01-11 | Toshiba Corp | シールド付き電気回路 |
JP2009077211A (ja) * | 2007-09-21 | 2009-04-09 | Sharp Corp | シャーシおよびそれを備えたローノイズブロックダウンコンバータ |
JP2015220153A (ja) * | 2014-05-20 | 2015-12-07 | 日立オートモティブシステムズ株式会社 | 電子制御装置 |
JP2019125668A (ja) * | 2018-01-16 | 2019-07-25 | 三菱電機株式会社 | 車載電子装置 |
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2021
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- 2021-09-24 US US18/038,319 patent/US20240008207A1/en active Pending
- 2021-09-24 CN CN202180085819.0A patent/CN116636312A/zh active Pending
- 2021-09-24 WO PCT/JP2021/035128 patent/WO2022190437A1/ja active Application Filing
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JPH0897584A (ja) * | 1994-09-28 | 1996-04-12 | Matsushita Electric Ind Co Ltd | 高周波機器とローノイズブロックコンバーター |
JPH10107476A (ja) * | 1996-09-27 | 1998-04-24 | New Japan Radio Co Ltd | 高周波回路基板の接地及び電波シールド構造 |
JP2007005356A (ja) * | 2005-06-21 | 2007-01-11 | Toshiba Corp | シールド付き電気回路 |
JP2009077211A (ja) * | 2007-09-21 | 2009-04-09 | Sharp Corp | シャーシおよびそれを備えたローノイズブロックダウンコンバータ |
JP2015220153A (ja) * | 2014-05-20 | 2015-12-07 | 日立オートモティブシステムズ株式会社 | 電子制御装置 |
JP2019125668A (ja) * | 2018-01-16 | 2019-07-25 | 三菱電機株式会社 | 車載電子装置 |
Cited By (1)
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EP4362622A1 (en) * | 2022-10-31 | 2024-05-01 | Nio Technology (Anhui) Co., Ltd | Static electricity releasing structure for controller, controller and vehicle |
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JPWO2022190437A1 (ja) | 2022-09-15 |
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