WO2023281783A1 - 車載制御装置及び製造方法 - Google Patents

車載制御装置及び製造方法 Download PDF

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Publication number
WO2023281783A1
WO2023281783A1 PCT/JP2022/003955 JP2022003955W WO2023281783A1 WO 2023281783 A1 WO2023281783 A1 WO 2023281783A1 JP 2022003955 W JP2022003955 W JP 2022003955W WO 2023281783 A1 WO2023281783 A1 WO 2023281783A1
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WO
WIPO (PCT)
Prior art keywords
base
control device
vehicle control
circuit board
cylindrical portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/003955
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English (en)
French (fr)
Japanese (ja)
Inventor
慶仁 渡会
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Astemo Ltd
Original Assignee
Hitachi Astemo Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Astemo Ltd filed Critical Hitachi Astemo Ltd
Priority to JP2023533051A priority Critical patent/JP7513848B2/ja
Priority to US18/287,912 priority patent/US12447912B2/en
Priority to CN202280030848.1A priority patent/CN117242903A/zh
Publication of WO2023281783A1 publication Critical patent/WO2023281783A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/14—Fastening of cover or lid to box
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • 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

Definitions

  • the present invention relates to an in-vehicle control device and a manufacturing method thereof.
  • a control device in which projections provided on a die-cast base are passed through holes in the circuit board, and clips are inserted into the projections to facilitate disassembly and assembly, thereby simply fixing the circuit board to the base. (Patent Document 1).
  • control device of Patent Document 1 since the control device of Patent Document 1 has a structure in which the circuit board is simply fixed to the base with a clip, the structure for fixing the circuit board lacks robustness.
  • An object of the present invention is to provide an in-vehicle control device capable of achieving both waterproofness and robustness of a circuit board fixing structure and suppressing warpage of the circuit board, and a method of manufacturing the same.
  • the present invention includes a base, a cover fixed to the base, a circuit board housed in the base and the cover, and an electronic component mounted on the circuit board
  • the base is made of a steel plate material, and includes a plate-shaped main body, a bottomed cylindrical portion having a U-shaped cross section that is recessed on one side of the main body and protruding to the other side, and a peripheral surface of the cylindrical portion.
  • the circuit board is fastened to the base by a fastening member screwed into the screw part of the cylindrical part.
  • the present invention it is possible to achieve both waterproofness and robustness of the circuit board fixing structure, and to suppress warping of the circuit board.
  • FIG. 1 is an exploded view of an in-vehicle control device according to a first embodiment of the present invention; Enlarged view of part III in Fig. 2 Sectional view of the male thread shown in FIG.
  • FIG. 4 is a perspective view of a semi-finished male screw for explaining the method of forming the male screw shown in FIG. 3 ;
  • FIG. 2 is an exploded view of an in-vehicle control device according to a second embodiment of the present invention; Enlarged view of part VIII in FIG.
  • Sectional view of the internal thread shown in FIG. FIG. 8 is a perspective view of a semi-finished female screw for explaining the method of forming the female screw shown in FIG. 7 ; Cross-sectional view of the female screw in the semi-finished state shown in FIG. An enlarged view of a female screw provided in the base of the in-vehicle control device according to the third embodiment of the present invention.
  • Sectional view of the internal thread shown in FIG. An exploded view of the internal thread shown in FIG. FIG. 11 is an enlarged view of a male screw provided on a base of an in-vehicle control device according to a fourth embodiment of the present invention; Sectional view of an example of the fastening structure using the male screw shown in FIG.
  • FIG. 11 is a diagram showing the layout of the BGA package in the first configuration example of the in-vehicle control device according to the seventh embodiment of the present invention
  • FIG. 11 is a diagram showing the layout of the BGA package in the second configuration example of the in-vehicle control device according to the seventh embodiment of the present invention
  • Principal part cross-sectional view of the perspective view shown in FIG. FIG. 26 is a cross-sectional view of a main part showing a state in which the in-vehicle control device shown in FIG. 26 is attached to a structure of an automobile.
  • FIG. 29 The perspective view showing a mode that the vehicle-mounted control apparatus which concerns on 9th Embodiment of this invention is attached to the structure of a motor vehicle.
  • Principal part cross-sectional view of the perspective view shown in FIG. FIG. 29 is a cross-sectional view of main parts showing the state in which the in-vehicle control device shown in FIG. 29 is attached to the structure of an automobile.
  • FIG. 1 is a perspective view of an in-vehicle control device according to a first embodiment of the present invention as viewed from the cover side, and FIG. 2 is a developed view.
  • the in-vehicle control device 1 (hereinafter abbreviated as the control device 1) shown in FIGS. 1 and 2 is a type of computer, and is an ECU (Electronic Control Unit) mounted on a vehicle structure and mounted on the vehicle.
  • the control device 1 described in each embodiment below is mounted, for example, in an engine room of an automobile, but may be mounted in locations other than the engine room of the automobile.
  • the control device 1 includes a base 10 , a cover 20 , a circuit board 30 ( FIG. 2 ) and electronic components 40 . These components are described below.
  • the base 10 is a base structure of the in-vehicle control device 1, and is made of a general-purpose steel plate material (hot-rolled steel plate or cold-rolled steel plate).
  • the base 10 is a plate-shaped member having a rectangular shape such as a square or a rectangle as a whole, and a plurality of radiation fins (not shown) are provided on the outer wall surface.
  • the base 10 is made of an aluminum plate material, and is not subjected to coating such as plating.
  • the base 10 has a flange F ⁇ b>1 on its outer periphery for fixing to the cover 20 . As shown in FIG. 2, male screws 11 protruding upward (toward the cover 20 side) are provided near the four corners of the base 10, respectively. Screw holes 12 are provided at the four corners of the base 10 on the flange F1.
  • the cover 20 is formed in a dome shape convex on the side opposite to the base 10 (the Z direction in FIG. 1), and constitutes the housing of the control device 1 together with the base 10 .
  • the cover 20 has a flange F2 on its outer periphery for fixing to the base 10.
  • the flange F2 is overlapped with the flange F1 of the base 10 and fastened with a plurality of (four in this embodiment) screws 5. It is fixed to the base 10 by means of Each screw 5 is screwed into the screw hole 12 of the base 10 through the through hole 22 (FIG. 2) opened in the four corners of the cover 20 of the flange F2. Accordingly, the cover 20 is fastened to the base 10 to surround and protect the circuit board 30 together with the base 10 .
  • resins such as PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), and PA (nylon) are used as the material of the cover 20 to reduce the weight of the cover 20 .
  • the cover 20 may be made of metal containing aluminum, iron, or the like as a main component.
  • a seal 9 is sandwiched between the flange F1 of the base 10 and the flange F2 of the cover 20, so that the waterproofness and airtightness between the base 10 and the cover 20 are enhanced.
  • an adhesive composed of a material such as silicone, epoxy, or urethane, or an O-ring composed of a rubber material can be used.
  • the adhesive seal 9 is used, the flange F1 of the base 10 and the flange F2 of the cover 20 are firmly fixed together with the fastening by the screw 5 and the adhesion by the seal 9, thereby ensuring waterproofness and airtightness. .
  • the control device 1 is attached to a structure of the automobile (for example, a bracket on the automobile side) with a bracket 23 .
  • the bracket 23 is molded integrally with the cover 20 in this embodiment, the bracket 23 may be formed on the base 10 .
  • the bracket 23 can be formed together when the base 10 is press-molded from a steel plate.
  • the brackets 23 are provided at both ends of the cover 20 in the longitudinal direction (the Y direction in FIG. 1).
  • These brackets 23 include leg portions 23a extending beyond the base 10 from the cover 20 toward the base 10 (-Z direction in FIG. 1), and flange portions 23b bent along the XY plane from the tips of the leg portions 23a. is formed in an L shape.
  • Each flange portion 23b is fastened to the automobile structure with a plurality of (two each in this embodiment) mounting screws (not shown).
  • a circuit board 30 is housed in the base 10 and the cover 20 . Electronic components 40 and connectors 49 are mounted on the circuit board 30 .
  • This circuit board 30 has through holes 31 (FIG. 2) at its four corners. , is fixed to the base 10 .
  • a Mylar sheet 8 (FIG. 2) is interposed between the circuit board 30 and the base 10 to electrically insulate the circuit board 30 and the base 10 .
  • the Mylar sheet 8 is an insulating film or sheet made of polyester, for example.
  • a structure (sandwich structure, which will be described later) in which a sealing adhesive or the like is sandwiched between the circuit board 30 and the base 10 is not adopted).
  • the connector 49 is made of resin such as PBT (polybutylene terephthalate), PA (polyamide), PPS (polyphenylene sulfide).
  • the connector 49 has a plurality of connector terminals made of metal containing copper as a main component, and is connected to a connector (not shown) at the tip of a harness extending from a communication partner device on the automobile side.
  • the connector terminal is a terminal for exchanging voltage and current with a connection counterpart, and is connected to a circuit formed on the circuit board 30 by soldering, press-fitting, or the like.
  • the connector 49 is exposed from the housing composed of the base 10 and the cover 20 , but the seal 9 is also interposed between the connector 49 and the base 10 and the cover 20 . As a result, the periphery of the connector 49 is also sealed with the seal 9 to ensure waterproofness.
  • the electronic component 40 may include various electronic components such as a BGA (Ball grid array) package and a QFN (Quad flat no lead package) package, although not all of them are shown.
  • BGA Bit grid array
  • QFN Quad flat no lead package
  • FIG. 3 is an enlarged view of part III in FIG. 2, and FIG. 4 is a cross-sectional view taken along a plane including the central axis of the male screw.
  • FIG. 5 is a perspective view of a semi-finished male screw for explaining the method of forming the male screw, and FIG. 6 is a cross-sectional view thereof.
  • elements that have already been explained are denoted by the same reference numerals as in the previous drawings, and their explanations are omitted.
  • the base 10 includes a body portion 13 , a cylindrical portion 14 and a screw portion 15 .
  • the base 10 is made of a steel plate material, and the body portion 13, the cylindrical portion 14 and the screw portion 15 are integral structures made of the same single steel plate material.
  • the main body part 13 is the main body of the base 10, and is a plate-like part that occupies most of the base 10 except for the cylindrical part 14 and the screw part 15.
  • One of the front and back sides of the body portion 13 (in this example, the outer wall surface on the side opposite to the circuit board 30) is recessed and the portion of the U-shaped cross section protruding to the other side (circuit board 30 side) is the cylindrical portion 14.
  • the cylindrical portion 14 is a non-through bottomed portion without a cup-shaped hole. A plurality (four in this embodiment) of the cylindrical portions 14 are provided, and are provided near the four corners of the body portion 13 of the base 10 .
  • the screw portion 15 is an element for screwing a fastening member to fasten the circuit board 30 to the base 10 , and is provided on the peripheral surface of each cylindrical portion 14 .
  • the threaded portion 15 is provided on the outer peripheral surface of each cylindrical portion 14, and the cylindrical portion 14 constitutes the male thread 11 described above.
  • the nut 6 described with reference to FIG. The nut 6 is a standard product. Therefore, the height of the cylindrical portion 14 (the amount of protrusion from the circuit board 30 superimposed on the body portion 13) should be approximately the thickness of the nut 6.
  • the base 10 is formed by press-molding a steel plate into a shape having the main body portion 13 and a plurality of cylindrical portions 14 having the shape described above, and then forming the external threads 11 by performing die processing on the outer peripheral surface of the cylindrical portion 14 .
  • the difference between the diameter X (FIG. 6) of the root portion near the body portion 13 and the diameter Y (FIG. 6) of the tip portion far from the body portion 13 is zero. .1 mm or less.
  • the male thread 11 to be formed is preferably about M3 or M4, that is, a thread with a nominal diameter of about 3 mm to 4 mm.
  • the Mylar sheet 8 is placed on the base 10, the male screws 11 are passed through the through holes 31 (FIG. 2), respectively, and the circuit board 30 is placed. Tighten the nut 6. In this way, the circuit board 30 is fastened to the base 10 by the fastening member (the nut 6 ) screwed onto the threaded portion 15 (the male thread 11 ) of the cylindrical portion 14 . Further, the seal 9 is placed at a predetermined position on the base 10 and the connector 49, and the cover 20 is attached to the base 10 to complete the control device 1.
  • seals 9 are not limited to the above, and the seals 9 may be installed before the circuit board 30 is installed.
  • the seal 9 is divided into a seal portion in the outer peripheral region of the base 10 and a seal portion around the connector. You may make it install the surrounding seal
  • the base 10 of the control device 1 is an integral structure of the male screw 11 provided with the threaded portion 15 in the non-penetrating cylindrical portion 14 having a U-shaped cross section and the plate-like body portion 13. Consists of a single piece of general-purpose steel plate.
  • the male screw 11 is formed of the same material as the body portion 13 of the base 10 and has a non-penetrating structure. It is a waterproof structure that does not allow water to pass through. Therefore, it is not necessary to seal the fastening portion, and it is not necessary to adopt a sandwich structure in which an adhesive is sandwiched. Therefore, it is possible to suppress warping of the circuit board 30 when fastening it to the base 10, and it is also suitable for application to BGA packages.
  • the flatness of the circuit board 30 can be ensured. Moreover, since it is a screw fastening structure, the fixing structure of the circuit board 30 is highly robust. Therefore, it is possible to achieve both waterproofness and robustness of the fixing structure of the circuit board 30 and to suppress the warping of the circuit board 30 . Since the warping of the circuit board 30 is suppressed, the stability of FG (Frame Ground) is also improved.
  • the base 10 can be manufactured at a low cost, and the manufacturing cost of the control device 1 can be reduced.
  • the base 10 is die-cast, it may be necessary to provide the base 10 with unnecessary parts such as ribs for the purpose of ensuring fluidity in the mold.
  • the base 10 by manufacturing the base 10 from a steel plate material, it is possible to eliminate the need for undercuts such as ribs that occur when die-casting is employed. This point can also contribute to weight reduction and cost reduction.
  • the control device installed in the engine room is required to be highly resistant to salt damage in order to increase the degree of freedom in layout. If the base 10 were made of die-cast, sufficient resistance to salt damage could not be ensured due to the characteristics of the die-cast material.
  • the base 10 of the control device 1 is made of high-purity aluminum steel plate, so high salt damage resistance can be ensured.
  • the weight of the base 10 can be reduced, which can contribute to the weight reduction of the control device 1 and, in turn, the improvement of the fuel efficiency of the automobile in which the control device 1 is mounted.
  • the cylindrical portion 14 is the male screw 11 having the screw portion 15 on its outer peripheral surface, it protrudes toward the circuit board 30 .
  • the male screw 11 serves as a positioning pin, and the circuit board 30 can be placed in an appropriate position simply by placing the circuit board 30 on the base 10 so that the male screw 11 passes through the through hole 31. can be placed.
  • the outer peripheral surface of the cylindrical portion 14 has a diameter difference of 0.1 mm or less between the root portion near the body portion 13 and the tip portion far from the body portion 13.
  • a threaded portion 15 of sufficient quality to be tightened can be formed. This point also contributes to stabilization of the fixing structure of the circuit board 30 .
  • ⁇ Second embodiment> 7 is an exploded view of an in-vehicle control device according to a second embodiment of the present invention
  • FIG. 8 is an enlarged view of section VIII in FIG. 7
  • FIG. 9 is a cross-sectional view taken along a plane including the central axis of a female screw.
  • FIG. 10 is a perspective view of a semi-finished female screw for explaining the method of forming the female screw
  • FIG. 11 is a cross-sectional view thereof.
  • 7 to 11 correspond to FIGS. 2 to 6 of the first embodiment. 7 to 11, portions similar or corresponding to those of the first embodiment are denoted by the same reference numerals as in the previous drawings, and descriptions thereof are omitted.
  • This embodiment differs from the first embodiment in that the cylindrical portion 14 protrudes on the side opposite to the circuit board 30 and has a screw portion 15 on its inner peripheral surface to form a female screw 16, and the base 10 is attached to the circuit board.
  • the fastening member that fastens 30 is a screw (male screw) 7 .
  • the base 10 is formed by press-molding a steel plate into a shape having a body portion 13 and a plurality of cylindrical portions 14, and then tapping a screw portion 15 on the inner peripheral surface of the cylindrical portion 14 using a tap. to form an internal thread 16 .
  • the inner peripheral surface of the cylindrical portion 14 formed by press working has a difference of 0.1 mm between the diameter X (Fig. 11) of the root portion near the body portion 13 and the diameter Y (Fig. 11) of the tip portion far from the body portion 13. make sure that:
  • the internal thread 16 is about M3 or M4, that is, a thread with a nominal diameter of about 3 mm to 4 mm.
  • the mylar sheet 8, the seal 9, and the circuit board 30 are placed on the base 10, and the screws 7 are internally threaded through the through holes 31 (FIG. 7) of the circuit board 30. Tighten to 16.
  • the circuit board 30 is fastened to the base 10 by means of fastening members (screws 7) screwed into the threaded portions 15 (female threads 16) of the cylindrical portion 14, and the cover 20 is mounted on the base 10, so that the control device 1 can be operated. manufactured.
  • this embodiment is the same as the first embodiment.
  • the cylindrical portion 14 has a shape in which one of the front and back sides of the steel plate material is recessed and protrudes to the other side, the female screw 16 can be formed by providing the threaded portion 15 on the inner peripheral surface. Therefore, by appropriately changing the projecting direction of the cylindrical portion 14, the cylindrical portion 14 can be not only the male thread 11 but also the female thread 16 depending on whether a nut or a screw is used as the fastening member.
  • FIG. 12 is an enlarged view of a female screw provided in a base of an in-vehicle control device according to a third embodiment of the present invention
  • FIG. 14 is an exploded view of the internal thread. 12 to 14, portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and description thereof is omitted.
  • This embodiment differs from the first embodiment in that the cylindrical portion 14 has an insert nut 17 attached to its inner peripheral surface as a screw portion 15 to form a female screw 16, and a circuit board 30 is fastened to the base 10.
  • the fastening member used is the screw 7 .
  • the case where the internal thread 16 is formed by tapping the inner peripheral surface of the cylindrical portion 14 is exemplified.
  • the internal thread 16 is configured by screwing into the .
  • this embodiment is the same as the second embodiment.
  • the female screw 16 can also be constructed by the method of this embodiment, and the same effects as in the second embodiment can be obtained.
  • FIG. 15 is an enlarged view of a male screw provided on the base of the vehicle-mounted control device according to the fourth embodiment of the present invention
  • FIG. 16 is a cross-sectional view of an example of the fastening structure using the male screw shown in FIG. 17 is a cross-sectional view of another example of the fastening structure using the male screw shown in FIG. 15,
  • FIG. 18 is a cross-sectional view of still another example of the fastening structure using the male screw shown in FIG.
  • FIGS. 15 to 17 portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previously described drawings, and descriptions thereof are omitted.
  • the first difference between this embodiment and the first embodiment is that the base 10 is in contact with the wiring pattern of the circuit board 30 directly or via a fastening member (the nut 6 in this embodiment). and the base 10 are electrically connected.
  • electrode pads EP for FG are provided in the through holes 31 of the circuit board 30 .
  • a ground terminal (not shown) of the wiring pattern of the circuit board 30 is connected to the electrode pad EP.
  • the electrode pad EP is ring-shaped, for example, made of copper.
  • the electrode pads EP exemplified in FIG. 16 have a U-shaped cross-sectional shape that opens on the outer peripheral side, and hold the circuit board 30 from both the front and back sides when attached to the through holes 31 . Therefore, the electrode pads EP are interposed both between the circuit board 30 and the nut 6 and between the circuit board 30 and the base 10 (the pedestal portion 18 of the base 10 in this example). , contact the base 10 directly and contact the base 10 via the nut 6 .
  • the electrode pad EP exemplified in FIG. 17 has a washer-like (flat ring-like) shape, is covered with the male screw 11 and is interposed between the circuit board 30 and the nut 6 .
  • the electrode pads EP shown in the figure are not interposed between the circuit board 30 and the pedestal portion 18 and are electrically connected to the base 10 (male screw 11) only through the route via the nut 6.
  • FIG. 17
  • the electrode pad EP illustrated in FIG. 18 also has a washer-like (flat ring-like) shape as in the example of FIG. ing.
  • the electrode pads EP shown in FIG. 18 are not interposed between the circuit board 30 and the nut 6, and are electrically connected to the base 10 (pedestal portion 18) only through a direct route.
  • a second point in which this embodiment differs from the first embodiment is that the base 10 includes a pedestal portion 18 projecting stepwise from the body portion 13 toward the circuit board 30, and the pedestal portion 18 has a cylindrical portion. 14 is provided. That is, the circuit board 30 is sandwiched between the pedestal portion 18 and the nut 6 that is the fastening member. Therefore, the pedestal portion 18 is interposed between the circuit board 30 and the body portion 13 of the base 10 , and the circuit board 30 is separated from the body portion 13 by a gap G secured by the pedestal portion 18 .
  • the pedestal part 18 has a disk-like shape concentric with the cylindrical part 14, and is molded together with the cylindrical part 14 and the like by press working using a steel plate material shared with the cylindrical part 14 and the like.
  • the thickness of the base portion 18 is also about the same as the thickness of the steel plate used for the cylindrical portion 14 and the main body portion 13 (for example, 1.5 mm).
  • a pedestal 18 protrudes from the main body 13 toward the circuit board 30 , and a cylindrical portion 14 (male screw 11 ) further protrudes from the ground center of the pedestal 18 .
  • the surface of the base portion 18 facing the circuit board 30 is smooth, and the circuit board 30 is received on this smooth surface.
  • the pedestal portion 18 By providing the pedestal portion 18 in this way to secure the gap G between the circuit board 30 and the base 10, even if the electronic component 40 is mounted on the surface of the circuit board 30 facing the base 10, the electronic component can still be mounted. By preventing contact between 40 and base 10, an electrical short can be avoided. Thereby, the electronic components 40 can be mounted on both the front and back surfaces of the circuit board 30 .
  • the configuration other than the above is the same as that of the first embodiment.
  • an example in which both the structure in which the wiring pattern of the circuit board 30 is sandwiched between the base 10 and the nut 6 and the structure in which the base 10 is provided with the pedestal portion 18 to secure the gap G between the circuit board 30 and the circuit board 30 are applied. was explained, but it is not limited to this.
  • the gap G is not necessarily required, and the pedestal portion 18 can be omitted in this case.
  • the structure in which the wiring pattern of the circuit board 30 is sandwiched between the base 10 and the nut 6 can be omitted.
  • FIG. 19 is an enlarged view of a female screw provided in the base of the vehicle-mounted control device according to the fifth embodiment of the present invention
  • FIG. 20 is a cross-sectional view of an example of the fastening structure using the female screw shown in FIG. 21 is a cross-sectional view of another example of the fastening structure using the internal thread shown in FIG. 19,
  • FIG. 22 is a cross-sectional view of still another example of the fastening structure using the internal thread shown in FIG. 19 to 22, portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and description thereof is omitted.
  • This embodiment is a configuration example in which the male screw 11 and nut 6 of the fourth embodiment are replaced with the female screw 16 and screw 7 similar to those of the second embodiment. That is, the base 10 is in contact with the wiring pattern of the circuit board 30 either directly or via a fastening member (the screw 7 in this embodiment), and the circuit board 30 and the base 10 are electrically connected. Moreover, the base 10 is provided with a pedestal portion 18 projecting from the body portion 13 toward the circuit board 30 , and a female screw 16 is formed in the central portion of the pedestal portion 18 .
  • 20 is the configuration example of FIG. 16 of the fourth embodiment
  • the configuration example of FIG. 21 is the configuration example of FIG. 17 of the fourth embodiment
  • the configuration example of FIG. 22 is the configuration example of FIG. 18 of the fourth embodiment. Yes.
  • FIG. 23 is a cross-sectional view of a main part of an in-vehicle control device according to a sixth embodiment of the present invention.
  • parts similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and descriptions thereof are omitted.
  • This embodiment differs from the first embodiment in that grooves S1 and S2 extending along the flanges F1 and F2 facing each other are provided in the opposing surfaces of the flanges F1 and F2 of the base 10 and the cover 20.
  • the cross section of the grooves S1 and S2 has a curved shape, but the cross section may have an angled cross section combining straight lines.
  • a seal 9 is interposed between the flanges F1 and F2 of the base 10 and the cover 20 and extends along the flanges F1 and F2.
  • the cross-sectional shape of the seal 9 of this embodiment corresponds to the cross-sectional shape of the grooves S1, S2 of the flanges F1, F2, and the mutual grooves S1, S2 of the base 10 and the cover 20 are interposed between the flanges F1, F2. Filled with a seal 9.
  • This seal 9 has, for example, a waterproof adhesion function, and is applied to the facing surfaces of the flanges F1 and F2.
  • this embodiment has the same configuration as, for example, the fourth embodiment.
  • the configuration of this embodiment can also be applied to embodiments other than the fourth embodiment.
  • grooves S1 and S2 are provided in the flanges F1 and F2 of the base 10 and the cover 20, respectively. You can extend the distance. By filling the seal 9 between the flanges F1 and F2 so as to fill the grooves S1 and S2, the waterproof performance is also improved.
  • the seal structure between the flanges F1 and F2 is not limited to the shape shown in FIG. 23, and a known seal structure can be applied.
  • FIG. 24 is a diagram showing the layout of the BGA package in the first structural example of the vehicle-mounted control device according to the seventh embodiment of the present invention
  • FIG. 1 is a diagram showing the layout of a BGA package
  • FIG. 24 is an example in which the base 10 and the circuit board 30 are fastened with the male screw 11 and the nut 6, and the second configuration example in FIG. This is an example of a signed agreement.
  • 24 and 25 portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and descriptions thereof are omitted.
  • the control device 1 of the present embodiment includes, as one of the electronic components 40, a BGA package 41 arranged in the center of the area surrounded by the plurality of fastening portions.
  • a BGA package 41 arranged in the center of the area surrounded by the plurality of fastening portions.
  • a BGA package 41 is arranged so as to overlap P.
  • the BGA package 41 is arranged at a position closer to the intersecting position P than the fastening portion.
  • this embodiment has the same configuration as, for example, the fourth embodiment.
  • the configuration of this embodiment can also be applied to embodiments other than the fourth embodiment.
  • connection reliability of the soldered portion of the BGA package 41 can be improved. Specifically, when vibration or impact is applied to the control device 1, or when the base 10 or the cover 20 expands or contracts due to temperature changes, stress concentration occurs at the portion rigidly fixed by the nut 6 or the screw 7. can occur. Even in such a case, since the distance between each fastening portion and the BGA package 41 is secured as much as possible in this embodiment, the transmission of the influence of the stress concentration generated at each fastening portion to the BGA package 41 is suppressed. be able to.
  • FIG. 26 is a perspective view showing how an on-vehicle control device according to the eighth embodiment of the present invention is attached to a structure of an automobile
  • FIG. 27 is a cross-sectional view of the essential parts of the perspective view shown in FIG. 26,
  • FIG. FIG. 2 is a cross-sectional view of a main part showing a state in which the illustrated in-vehicle control device is attached to a structure of an automobile;
  • FIGS. 26 to 28 portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and descriptions thereof are omitted.
  • This embodiment differs from the first embodiment in that the inner peripheral portion of the cylindrical portion 14 that constitutes the male screw 11 is inserted into the guide pin GP provided on the structure of the automobile (in this example, the automobile-side bracket BKT). It also serves as a guide hole.
  • this embodiment has the same configuration as, for example, the first embodiment.
  • the configuration of this embodiment can also be applied to embodiments other than the first embodiment (excluding the embodiment in which the cylindrical portion 14 constitutes the female screw 16).
  • the control device 1 when the control device 1 is mounted on a vehicle, a guide pin GP provided on the vehicle-side bracket BKT is inserted into the cylindrical space inside the cylindrical portion 14, and the guide pin GP is attached to the vehicle-side bracket BKT.
  • the control device 1 can be easily positioned. Therefore, the through hole 23c (FIG. 26) of the bracket 23 for attaching the control device 1 to the structure of the automobile should be made large enough to accommodate the screw (not shown) that fastens the control device 1 and the structure of the automobile. The size can be set, and the mounting work of the control device 1 can be facilitated.
  • FIG. 30 is a cross-sectional view of the essential parts of the perspective view shown in FIG.
  • FIG. 2 is a cross-sectional view of a main part showing a state in which the illustrated in-vehicle control device is attached to a structure of an automobile
  • 29-31 correspond to FIGS. 26-28 of the eighth embodiment. 29 to 31, portions similar or corresponding to those in the already described embodiment are denoted by the same reference numerals as in the previous drawings, and description thereof is omitted.
  • This embodiment differs from the second embodiment in that the outer peripheral portion of the cylindrical portion 14 forming the female thread 16 also serves as a guide hole GH provided in the automobile structure (in this example, the automobile-side bracket BKT). This is the point.
  • this embodiment has the same configuration as, for example, the second embodiment.
  • the configuration of this embodiment can also be applied to embodiments other than the second embodiment (excluding the embodiment in which the cylindrical portion 14 constitutes the male screw 11).
  • the female thread 16 similar to that of the second embodiment is applied, the female thread 16 (configuration using the insert nut 17) similar to that of the third embodiment may be applied.
  • FIG. 32 shows a half-finished cruciform cylindrical portion 24 formed by press-molding the base 10 .
  • the cylindrical portion 24 has a U-shaped cross section that is recessed on one side of the main body portion and protrudes to the other side, and is a non-penetrating bottomed portion.
  • FIG. 33 shows an example in which a threaded portion 15 is formed on the cross-shaped outer peripheral surface of the cylindrical portion 24 by die processing.
  • circuit board 30 is fixed using a cross-shaped cylindrical portion 24 having a pedestal 18 .
  • the board 30 is fixed by sandwiching the circuit board 30 between the pedestal 18 and the nut 6 and tightening the nut 6 to the threaded portion 15 of the cylindrical portion 24 .
  • the shape of the cylindrical portion provided on the base is not limited to a cylindrical shape or a cross shape, and other shapes can be adopted as long as the shape can be formed by press molding and the threaded portion can be formed by die processing or tap processing. .
  • SYMBOLS 1 Vehicle-mounted control apparatus, 6... Nut (fastening member), 7... Screw (fastening member), 9... Seal, 10... Base, 11... Male screw, 13... Body part, 14... Cylindrical part (cylinder part), 15 Threaded portion, 16 Female screw, 17 Insert nut, 18 Pedestal portion, 20 Cover, 24 Cylindrical portion, 30 Circuit board, 40 Electronic component, 41 BGA package (electronic component), EP Electrode Pad (wiring pattern), F1, F2... Flange, GH... Guide hole, GP... Guide pin, P... Point (center of area surrounded by fastening portion), S1, S2... Groove, X... Root part of cylindrical part diameter, Y ... the diameter of the tip of the cylindrical part

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Casings For Electric Apparatus (AREA)
  • Connection Or Junction Boxes (AREA)
PCT/JP2022/003955 2021-07-05 2022-02-02 車載制御装置及び製造方法 Ceased WO2023281783A1 (ja)

Priority Applications (3)

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JP2023533051A JP7513848B2 (ja) 2021-07-05 2022-02-02 車載制御装置及び製造方法
US18/287,912 US12447912B2 (en) 2021-07-05 2022-02-02 In-vehicle control device and manufacturing method
CN202280030848.1A CN117242903A (zh) 2021-07-05 2022-02-02 车载控制装置及制造方法

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JP2021111319 2021-07-05
JP2021-111319 2021-07-05

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JPH01140889U (https=) * 1988-03-22 1989-09-27
JP2011088190A (ja) * 2009-10-23 2011-05-06 Iwai Metal (America) Co Ltd ブラインドナットを備えた取付金具の製造方法およびそれに使用するタップ工具
US20110111868A1 (en) * 2009-11-12 2011-05-12 Iwai Methal (America) Co., Ltd. Method for manufacturing fitting including blind nut and tap tool for use in this method
JP2014075496A (ja) * 2012-10-05 2014-04-24 Hitachi Automotive Systems Ltd 車載電子制御装置

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JPH01140889A (ja) 1987-11-27 1989-06-02 Toshiba Corp Ｓｅｃａｍ方式磁気記録再生装置
JP2001056703A (ja) 1999-08-19 2001-02-27 Mitsubishi Electric Corp 制御装置
US6864428B2 (en) * 2003-07-03 2005-03-08 Delphi Technologies, Inc. Electronic package having fastener particle containment and assembly method
US20080206016A1 (en) * 2005-07-21 2008-08-28 Thompson Steven L Encapsulated fastener and method and tooling for manufacturing same
US8338720B2 (en) * 2009-10-08 2012-12-25 Trw Automotive U.S. Llc Enclosure for a vehicle
JP5474877B2 (ja) * 2011-06-17 2014-04-16 日立オートモティブシステムズ株式会社 電子制御装置
CN112204838B (zh) * 2018-06-19 2022-02-11 株式会社自动网络技术研究所 电接线盒

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH01140889U (https=) * 1988-03-22 1989-09-27
JP2011088190A (ja) * 2009-10-23 2011-05-06 Iwai Metal (America) Co Ltd ブラインドナットを備えた取付金具の製造方法およびそれに使用するタップ工具
US20110111868A1 (en) * 2009-11-12 2011-05-12 Iwai Methal (America) Co., Ltd. Method for manufacturing fitting including blind nut and tap tool for use in this method
JP2014075496A (ja) * 2012-10-05 2014-04-24 Hitachi Automotive Systems Ltd 車載電子制御装置

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US20240198931A1 (en) 2024-06-20
CN117242903A (zh) 2023-12-15
JPWO2023281783A1 (https=) 2023-01-12

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