JP2017175854A - Electronic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic control device that is arranged next to a side of a box-shaped member, which can be reduced in weight while securing heat radiation.SOLUTION: An electronic control device that is arranged next to a short side of a battery comprises a bracket 70 for mounting an enclosure storing a circuit board on a vehicle. The bracket has: a metal base part 71, interposed between the battery and the enclosure and fixed with the enclosure; a support part 72, extended from a lower end of the base part to the opposite side of the enclosure, which supports the battery; and a metal reinforcement part 73 which connects end parts of the base part and the support part to each other at both sides in a width direction orthogonal to both directions of an extension direction of the support part and a thickness direction of the support part. The support part has: a metal part 75 provided in a predetermined range in the extension direction from the lower end of the base part; and a resin part 76, formed integrally with the metal part, which has a part provided at a position separated away from the base part more than the metal part. The base part is connected to the metal part by the reinforcement part.SELECTED DRAWING: Figure 12

Description

  The disclosure in this specification relates to an electronic control device that is disposed next to a side surface of a box-shaped member in a compartment that is separated from a vehicle compartment by a partition wall and is located under a lid.

  Space for mounting electronic devices in compartments located under the lid, separated from the passenger compartment where passengers are boarded, due to an increase in the number of mounted parts due to higher functionality of the car and the expansion of the interior space for improving comfort Has been limited year by year. For example, in the engine compartment under the hood, it is necessary to secure a space for reducing the impact on the pedestrian's head in the event of a pedestrian accident.

  In Patent Document 1, an electronic control device (engine control unit) is disposed below a battery as a box-shaped member in an engine compartment under a bonnet.

JP 2008-81016 A

  If the structure of patent document 1 is employ | adopted, since box-shaped members, such as a battery, will be arrange | positioned on an electronic controller, the position of lids, such as a bonnet, will become high, for example.

  Therefore, the present inventors have intensively studied an electronic control device disposed next to the side surface of the box-shaped member. At that time, the electronic control device is configured to include a bracket for attaching the housing to the vehicle, together with the circuit board and the housing. In addition, a bracket is interposed between the box-shaped member and the housing, and the base made of metal to which the housing is fixed, and extends from the lower end of the base to the opposite side of the housing to support the box-shaped member And a reinforcing portion that connects the ends of the base portion and the support portion on both sides in the width direction perpendicular to both the extending direction of the support portion and the thickness direction of the support portion. According to this structure, a housing | casing can be attached to the narrow space adjacent to the side surface of a box-shaped member with sufficient positional accuracy.

  As described above, when the housing is arranged in a narrow space adjacent to the side surface of the box-shaped member, heat is likely to be trapped, and thus it is necessary to sufficiently consider heat dissipation. A support portion that supports a battery that is a box-shaped member, that is, a battery tray is generally formed using a resin material. When the resin support portion is used in this way, there is a possibility that a problem may occur in terms of heat dissipation. On the other hand, when a metal bracket is employed, heat dissipation can be ensured, but the electronic control device becomes heavy.

  This indication is made in view of such a subject, and aims at weight reduction, securing heat dissipation in an electronic control device arranged adjacent to the side of a box-shaped member.

  The present disclosure employs the following technical means to achieve the above object. In addition, the code | symbol in parenthesis shows the corresponding relationship with the specific means as described in embodiment mentioned later as one aspect | mode, Comprising: The technical scope is not limited.

One of the present disclosures is arranged next to the side surface (19c) of the box-shaped member (19) in the compartment (17) that is separated from the vehicle interior by the partition wall (16) and is located below the lid (12). An electronic control unit,
A circuit board (30);
A housing (40) for housing the circuit board;
A member for attaching the casing to the vehicle, which is interposed between the side surface of the box-shaped member and the casing, and is made of a metal base (71) to which the casing is fixed. The support part (72) extended to the opposite side and supporting the box-shaped member, and the ends of the base part and the support part on both sides in the width direction perpendicular to both the extending direction of the support part and the thickness direction of the support part A bracket (70) having a metal reinforcing part (73) connecting the parts;
With
The support part is formed integrally with the metal part (75) provided in a predetermined range in the extending direction from the lower end of the base part and the metal part, and provided at a position farther from the base part than the metal part. A resin portion (76) including a portion,
The base and the metal part are connected by the reinforcing part.

  According to this, the heat generated by the circuit board is transmitted from the housing to the metal part of the support part via the base part and the reinforcing part. Therefore, heat dissipation can be ensured.

  Moreover, the metal part is arrange | positioned in the part close | similar to a base part among support parts, and only the resin part is arrange | positioned in the part away from the base part. Therefore, it is possible to reduce the weight of the electronic control device as compared with the case where the entire support portion is configured by the metal portion. As described above, it is possible to reduce the weight while ensuring heat dissipation.

It is a top view which shows schematic structure of the vehicle by which the electronic control apparatus of 1st Embodiment is arrange | positioned. It is a top view which shows arrangement | positioning of an electronic control apparatus in an engine compartment. It is a perspective view which shows the electronic control apparatus arrange | positioned beside a battery and a battery. It is a top view which shows the electronic control apparatus arrange | positioned beside a battery and a battery. It is a top view which shows an electronic control apparatus. It is a top view which shows an electronic control apparatus. It is a perspective view which shows the housing | casing in which the circuit board was accommodated. It is a perspective view which shows the housing | casing in which the circuit board was accommodated. It is a perspective view which shows the state which removed the cover of the housing | casing. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which shows the area | region XI of FIG. It is a perspective view which shows a bracket. It is a perspective view which shows a metal part among brackets. It is sectional drawing which follows the XIV-XIV line | wire of FIG. It is sectional drawing which follows the XV-XV line | wire of FIG. It is a perspective view which shows the state before nut mounting of the fixing | fixed part of a housing | casing and a bracket. It is a perspective view which shows the state after nut mounting of the fixing | fixed part of a housing | casing and a bracket. It is a figure for demonstrating the thermal radiation effect. It is a figure which shows a thermal analysis result. It is a figure which shows a thermal analysis result. It is a figure which shows a thermal analysis result. It is a perspective view which shows the electronic control apparatus of 2nd Embodiment arrange | positioned beside a battery and a battery. It is a perspective view which shows the electronic control apparatus of 3rd Embodiment arrange | positioned beside a battery and a battery. In the electronic control device of a 4th embodiment, it is a sectional view showing a fixing part of a case and a bracket, and corresponds to Drawing 15. In the electronic control device of a 5th embodiment, it is a sectional view showing a fixing part of a case and a bracket, and corresponds to FIG. In the electronic control apparatus of 6th Embodiment, it is a perspective view which shows the fixing | fixed part of a housing | casing and a bracket, and respond | corresponds to FIG. In the electronic control device of a 7th embodiment, it is a sectional view showing a fixing part of a case and a bracket, and corresponds to Drawing 15.

  A plurality of embodiments will be described with reference to the drawings. In several embodiments, functionally and / or structurally corresponding parts are given the same reference numerals. In the following, the extending direction of the support part relative to the base part is the X direction, the direction orthogonal to the X direction, and the thickness direction of the support part is indicated as the Z direction. In addition, a direction orthogonal to both the X direction and the Z direction, that is, the width direction of the support portion is indicated as a Y direction.

(First embodiment)
First, based on FIG.1 and FIG.2, the mounting environment of the electronic control apparatus of this embodiment is demonstrated.

  As shown in FIG. 1, the vehicle 10 has a hood 12 in front of the front windshield 11. The bonnet 12 is also referred to as a hood. A front fender 13 is attached to both sides of the bonnet 12 in the left-right direction of the vehicle in order to protect the occupant from unillustrated tires and splashes of stones, mud, water and the like. Further, headlights 14 are provided in front of the vehicle 10 on both the left and right sides. A front grille 15 is provided between the headlights 14 for taking in air from the outside.

  As shown in FIG. 2, an engine compartment 17 separated from a passenger compartment (cabin) in which an occupant is boarded by a partition wall 16 is located under the hood 12, and an engine 18, a vehicle auxiliary machine, and the like are arranged. The engine compartment 17 is also referred to as an engine room. The engine compartment 17 is defined by a front fender 13, a front grill 15, a partition wall 16, and the like. The engine compartment 17 corresponds to a compartment, and the bonnet 12 corresponds to a lid on the compartment.

  In addition to the engine 18, the engine compartment 17 includes a battery 19, an electronic control unit 20, a relay box 21, and the like. The electronic control unit 20 is configured as an engine ECU (Electronic Control Unit). The battery 19 corresponds to a box-shaped member. The electronic control unit 20 calculates a target torque that the engine 18 should output. Further, the electronic control unit 20 controls the opening degree of the throttle valve, the fuel injection amount, the ignition timing, and the like through the wire harness 22 in order to generate the target torque required by the engine 18.

  The relay box 21 includes a large number of relays and fuses in order to distribute the power of the battery 19 to the electrical components in the vehicle. The relay box 21 is supplied with electric power to the electronic control device 20 through a part of the wire harness 23 or a control signal is input from the electronic control device 20. With this control signal, the supply of electric power to the electrical components mounted on the vehicle 10 is controlled. The remainder of the wire harness 23 is connected to various body-type ECUs, meters, various switches, and the like (not shown) through through holes 16 a provided in the partition wall 16. Thereby, it is possible to communicate with each other between the electronic control unit 20 and various body-type ECUs and controlled objects.

  Next, based on FIGS. 3 to 17, the battery 19, the electronic control device 20 disposed beside the battery 19, the battery 19 and the fixing structure of the electronic control device 20 will be described. 5, 6, 12, and 13, the latching portion 77 of the bracket 70 is omitted for convenience. In FIGS. 12 and 13, for convenience, the bolt 80 fixed to the base 71 is omitted. In FIG. 10, the solder 32 is omitted for convenience.

(Battery 19)
As shown in FIGS. 3 and 4, the battery 19 has a substantially rectangular parallelepiped shape, and as an outer surface, an upper surface 19 a on which terminals and the like (not shown) are formed, a long side surface 19 b and a short side surface 19 c which are side surfaces, It has an upper surface 19a and a lower surface (not shown) opposite in the Z direction. The long side surface 19b is a side surface continuous with the long side of the upper surface 19a having a substantially rectangular shape, and the short side surface 19c is a side surface continuous with the short side of the upper surface 19a. The pair of long side surfaces 19b and the pair of short side surfaces 19c are both substantially flat surfaces, that is, flat portions 19d. The battery 19 is disposed on a support portion 72 of a bracket 70 described later.

  In the present embodiment, the battery 19 includes a heat insulating member 19 e for suppressing heat transfer between the circuit board 30 and the battery 19. As the heat insulating member 19e, a well-known member applied to the vehicle 10, such as a polypropylene hollow sheet, can be employed. The heat insulating member 19e is disposed at least between the flat surface portion 19d and the base portion 71. The heat insulating member 19e can be arranged on five surfaces excluding the upper surface 19a with respect to the battery 19 having a substantially rectangular parallelepiped shape. In this embodiment, since the support part 72 has the resin part 76, the heat insulation member 19e is arrange | positioned with respect to 4 surfaces of a pair of long side surface 19b and a pair of short side surface 19c.

(Battery 19 fixing structure)
The battery 19 is fixed to the bracket 70. A clamp member 24 that clamps the battery 19 is disposed on the upper surface 19 a of the battery 19. The clamp member 24 is disposed so as to straddle the upper surface 19a along the short side direction in the vicinity of the center of the long side. Both ends of the clamp member 24 extend outward from the upper surface 19a in the Y direction. A hook member 25 is connected to both ends of the clamp member 24.

  In the present embodiment, the hook member 25 extends from the clamp member 24 in the Z direction, and is branched from the main portion 25a in the middle of the main portion 25a, and a main portion 25a fixed to the side wall portion 76d of the support portion 72. , And a branch portion 25 b that extends in the X direction and is fixed to the reinforcing portion 73 of the bracket 70. Thus, the hook member 25 in which the fixing portion to the bracket 70 is divided into two parts is adopted. In the main part 25a and the branch part 25b, the end part on the side fixed to the bracket 70 is bent in a J-shape.

  A latching portion 77 is formed on the side wall portion 76d to which the main portion 25a is fixed and the reinforcing portion 73 to which the branch portion 25b is fixed. J-shaped end portions of the main portion 25a and the branch portion 25b are latched to the latch portion 77. Thus, the battery 19 is sandwiched between the bracket 70 and the clamp member 24.

(Electronic control device 20)
As shown in FIGS. 3 to 16, the electronic control unit 20 includes a circuit board 30, a casing 40 having a case 41 and a cover 42, a connector 50 having a housing 51 and terminals 52, a resin frame 60, a vehicle And a bracket 70 to be attached to 10.

(Circuit board 30)
The circuit board 30 shown in FIGS. 9 to 11 includes a printed circuit board and electronic components (not shown) mounted on the printed circuit board. The printed circuit board has wirings arranged on a base material formed using an electrically insulating material such as a resin. A circuit is formed by the wiring and the electronic components. The circuit board 30 is accommodated in the internal space of the housing 40.

  The circuit board 30 has a surface 30a and a back surface 30b opposite to the surface 30a in the thickness direction. The thickness direction of the circuit board 30 is substantially coincident with the X direction. The circuit board 30 (printed board) has a substantially rectangular planar shape.

  The circuit board 30 has a plurality of through holes 30c. The through hole 30c penetrates the circuit board 30 along the X direction, that is, across the one surface 30a and the back surface 30b. The through hole 30 c is formed corresponding to the terminal 52 of the connector 50. In the circuit board 30, a land (not shown) is formed on the wall surface of the through hole 30c. In the circuit board 30 having a substantially rectangular planar shape, the through hole 30c is provided on one end side in the Z direction. Specifically, it is provided on the mounting side of the connector 50.

  As shown in FIG. 9, the circuit board 30 has a fixing hole 30 d for fixing the circuit board 30 to the housing 40. The fixing hole 30d is a hole through which the screw 31 is inserted. The circuit board 30 is fixed to the case 41 of the housing 40 by screws 31. The fixing hole 30d is formed in a portion of the circuit board 30 different from the through hole 30c.

  In the present embodiment, among the four corners of the circuit board 30 having a substantially rectangular planar shape, fixing holes 30d are respectively formed in two corners opposite to the connector 50 mounting side in the Z direction. . Further, fixing holes 30d are formed in the Z direction closer to the center of the circuit board 30 than in the through holes 30c and near both ends in the Y direction. In this way, a total of four fixing holes 30d are formed.

(Case 40)
The housing 40 houses the circuit board 30 and protects the circuit board 30. The housing 40 also accommodates part of the connector 50 therein. The housing 40 has two members divided in the Z direction, specifically, a case 41 and a cover 42. Of the case 41 and the cover 42, the case 41 to which the circuit board 30 is fixed is formed using a metal material such as aluminum. The material for forming the cover 42 is not particularly limited. However, in consideration of heat dissipation, a metal cover 42 may be employed. In the present embodiment, the case 41 is formed by die casting using an aluminum-based material. The cover 42 is formed by pressing an aluminum material.

  The case 41 has a box shape whose one surface is open. Corresponding to the circuit board 30 having a substantially rectangular planar shape, the bottom of the case 41 is also substantially rectangular. In the case 41, one of the four side surfaces is opened, and the opening on the side surface is connected to the opening on the one surface described above.

  A connector 50 is integrated with the case 41. A resin frame 60 is also integrated with the case 41. The case 41, the connector 50, and the resin frame 60 are integrally formed by using the terminal 52 of the case 41 and the connector 50 as an insert part and the housing 51 and the resin frame 60 by injection molding.

  The case 41 has a pedestal portion 41a, a screw hole 41b, and an attachment portion 41c. As shown in FIG. 10, the pedestal portion 41 a protrudes from the inner surface of the case 41 in the X direction corresponding to the position where the circuit board 30 is fixed by the screw 31. The projecting tip of the pedestal portion 41 a is a flat surface so as to contact the back surface 30 b of the circuit board 30 and support the circuit board 30. The screw hole 41b opens at the protruding tip of the pedestal portion 41a and is formed with a predetermined depth in the X direction. The screw 31 is formed using a metal material. The screw 31 is inserted into the fixing hole 30 d of the circuit board 30 and screwed into the screw hole 41 b of the case 41.

  The attachment portion 41 c is provided outside the installation area of the resin frame 60 with respect to the case 41. The attachment portion 41 c is a portion for attaching the housing 40 in which the circuit board 30 is accommodated to the bracket 70. In the present embodiment, there are two pairs of attachment portions 41c provided so as to sandwich the circuit board 30 in the Y direction. The attachment portion 41 c extends outward from the main body portion that accommodates the circuit board 30 in the case 41. A structure for fixing the housing 40 to the bracket 70 will be described later.

  The cover 42 forms an internal space of the housing 40 together with the case 41. By assembling the case 41 and the cover 42, the opening on one surface of the case 41 is closed by the cover 42, and the opening 40a is formed. The opening 40a is formed by partitioning the opening on the side surface by closing the opening on the one surface by the cover 42. As shown in FIG. 8, the cover 42 has a substantially flat plate shape.

  In the present embodiment, the cover 42, the housing 51, and the resin frame 60 are connected by thermal welding. That is, the case 41 and the cover 42 are assembled via the housing 51 and the resin frame 60.

  The contact surfaces of the case 41 and the cover 42 with the housing 51 and the resin frame 60 are subjected to fine hole processing. As a method for forming the fine holes, for example, etching with a chemical solution, laser beam irradiation, or the like can be employed. Part of the resin constituting the housing 51 and the resin frame 60 enters the fine holes of the case 41 and the cover 42.

  The housing 40 is fixed to the bracket 70 in a state where the cover 42 is disposed so as to face the base 71. The cover 42 may be brought into contact with the base 71, or a gap may be provided between the cover 42 and the base 71. When brought into contact, the heat generated by the circuit board 30 is easily transferred from the cover 42 to the base 71 (bracket 70). When the gap is provided, the heat is more easily transmitted from the cover 42 to the base 71 as the gap is narrower. In addition, when the gap between the cover 42 and the base 71 is provided in the entire length of the opposing region between the cover 42 and the base 71 in the Z direction, the air flow (natural convection) that flows through the gap between the base 71 and the cover 42 Cooling with can also be expected.

(Connector 50)
The connector 50 is disposed on one end side in the Z direction with respect to the circuit board 30. The connector 50 is inserted and mounted on the circuit board 30. A part of the connector 50 is exposed to the outside through the opening 40 a of the housing 40, and the remaining part is accommodated in the internal space of the housing 40. The connector 50 has a housing 51 and a plurality of terminals 52.

  The housing 51 is formed using a resin material. As shown in FIG. 11, the housing 51 has a cylindrical part 51a and a closing part 51b. The cylinder part 51a is formed in a cylindrical shape. The cylinder part 51a has an axis along the Y direction. The closing part 51b is connected to the cylinder part 51a and closes the cylinder part 51a. All the terminals 52 are held in the closing part 51b. In the present embodiment, the closing part 51b closes one end of the cylindrical part 51a. For this reason, the housing 51 has a bottomed cylindrical shape.

  As shown in FIGS. 7 and 8, the housing 51 has three cylindrical portions 51a. A part of the three cylinder parts 51a is an engine block used for connection with the wire harness 22 for driving the engine 18, and the remaining cylinder parts 51a are wire harnesses corresponding to the relay box 21 and the body ECU. The body block is used for connection to the terminal 23. The blocking part 51b is common to the three cylindrical parts 51a.

  The housing 51 further has a step portion 51c. As shown in FIG. 11, the stepped portions 51 c are respectively provided on the outer surface on the case 41 side and the outer surface on the cover 42 side in the closing portion 51 b in the X direction. The step part 51c is provided on the end part side opposite to the cylinder part 51a in the closing part 51b. For this reason, the length of the closing portion 51b in the X direction is the longest on the connection side with the cylindrical portion 51a and the shortest in the portion where the stepped portion 51c is formed. The depth in the X direction of the step portion 51 c is substantially equal to the thickness of the case 41 and the cover 42. For this reason, in the Z direction, the outer surface of the case 41 is substantially flush with the outer surface of the cylindrical portion 51a. Although not shown, the outer surface of the cover 42 is also substantially flush with the outer surface of the cylindrical portion 51a.

  The terminal 52 is formed using a conductive material, and electrically relays a circuit configured on the circuit board 30 and an external device. The terminal 52 is held in the closing portion 51b by, for example, press fitting and insert molding. The plurality of terminals 52 are arranged along the Y direction, which is the width direction of the housing 51, as shown in FIG. In the present embodiment, since the number of terminals is large, the terminals 52 are arranged in multiple stages in the X direction. As shown in FIG. 11, the terminal 52 includes a held portion 52a, a fitting portion 52b, and a leg portion 52c.

  The held portion 52 a is a portion of the terminal 52 that is held by the closing portion 51 b of the housing 51. In the cross section shown in FIG. 11, the held portion 52a is held in four steps in the X direction. The held portion 52a extends along the Z direction.

  The fitting portion 52b is a portion of the terminal 52 where a female connector of an external device is fitted. The fitting part 52b is a part electrically connected to the female connector described above. The fitting portion 52b extends from the held portion 52a to the side opposite to the internal space of the housing 40. The fitting part 52b is arrange | positioned in the cylinder part 51a. In this embodiment, the fitting part 52b is arrange | positioned at each of the three cylinder parts 51a.

  The fitting part 52b is also extended in the Z direction. There is no bent portion between the held portion 52a and the fitting portion 52b, and the fitting portion 52b extends in the Z direction continuously to the fitting portion 52b. The interval between adjacent held portions 52a in the X direction, that is, the interval D1 between adjacent fitting portions 52b is a constant value. The distance D1 is determined according to the connection structure with the female connector.

  The leg portion 52 c is a portion of the terminal 52 that extends from the held portion 52 a toward the circuit board 30. The leg part 52c is a part extended from the held part 52a to the opposite side to the fitting part 52b. The leg part 52c has a first bent part 52d, an insertion part 52e, and a connecting part 52f that connects the held part 52a and the first bent part 52d.

  The first bent part 52d is provided between the insertion part 52e and the connecting part 52f in the leg part 52c. The first bent portion 52d is a portion that bends the leg portion 52c so as to extend downward in the X direction on the circuit board 30 side. In the present embodiment, regarding the positional relationship between the two portions A and B in the terminal 52, when A is positioned on the bottom side of the case 41 with respect to B, B is positioned below A and A is relative to B. It is shown that it is located above.

  In the terminals 52 arranged in multiple stages, the position of the first bent portion 52d is as far away from the closing portion 51b in the Z direction as the first bent portion 52d of the terminal 52 located at the upper side is as shown by a broken line in FIG. Yes. That is, the distance along the Z direction between the held portion 52a and the first bent portion 52d of the leg portion 52c connected to the held portion 52a is longer for the terminal 52 located above.

  The insertion portion 52e is a portion extending downward from the first bent portion 52d. The insertion part 52e is inserted through the corresponding through hole 30c of the circuit board 30. For this reason, a part of the insertion portion 52e is inserted into the through hole 30c. The insertion portion 52e is electrically connected to the land on the wall surface of the through hole 30c via the solder 32. In the terminals 52 arranged in multiple stages, the insertion portions 52e are arranged in the Z direction, and the interval between the insertion portions 52e in the Z direction is a constant value.

  In the present embodiment, the connecting portions 52f of all the terminals 52 include the first horizontal portion 52g, the second bent portion 52h, the inclined portion 52i, the third bent portion 52j, and the second horizontal portion 52k. doing. That is, all the terminals 52 are inclined terminals 53 including the second bent part 52h and the inclined part 52i.

  The first horizontal portion 52g is a portion from the end portion on the held portion 52a side to the second bent portion 52h in the connecting portion 52f. The first horizontal portion 52g extends in the Z direction. That is, the first horizontal portion 52 g is substantially parallel to the one surface 30 a of the circuit board 30. There is no bent portion between the held portion 52a and the first horizontal portion 52g, and the first horizontal portion 52g extends in the Z direction continuously to the fitting portion 52b. For this reason, in the inclined terminals 53 arranged in multiple stages, the interval between the first horizontal portions 52g adjacent in the X direction is also D1.

  The second bent portion 52h and the inclined portion 52i are provided such that the first bent portion 52d of the leg portion 52c connected to the held portion 52a is positioned above the held portion 52a. In the present embodiment, as shown by a one-dot chain line in FIG. 11, the second bent portion 52h and the inclined portion 52i are arranged so that the circuit board 30 is located above the first-stage held portion 52a from the lower side. Is provided. In other words, the circuit board 30 is held in the first stage held portion 52a so that the first bent portion 52d of the leg portion 52c connected to the held portion 52a is positioned above the held portion 52a. The bending angle of the second bent portion 52h and the length of the inclined portion 52i are determined so as to be positioned higher than those.

  The second bent portion 52h is a portion that bends the connecting portion 52f obliquely upward toward the first bent portion 52d. The second bent portion 52h is provided between the first horizontal portion 52g and the inclined portion 52i. The second bent portion 52h is a portion that bends the connecting portion 52f extending in the Z direction so as to extend obliquely upward. In the inclined terminals 53 arranged in multiple stages, the positions of the second bent portions 52h in the Z direction are substantially equal to each other as indicated by broken lines in FIG.

  The inclined portion 52i is connected to the first bent portion 52d side with respect to the second bent portion 52h, and extends obliquely upward from the second bent portion 52h. In the inclined terminals 53 arranged in multiple stages, the bending angle of the second bent portion 52h is larger as the inclined terminal 53 is positioned below.

  The third bent portion 52j is provided between the second bent portion 52h and the first bent portion 52d, and bends the connecting portion 52f toward the first bent portion 52d. The third bent portion 52j is provided between the inclined portion 52i and the second horizontal portion 52k. The second horizontal portion 52k is a portion between the third bent portion 52j and the first bent portion 52d in the connecting portion 52f. The second horizontal portion 52k extends in the Z direction. That is, the second horizontal portion 52k is substantially parallel to the one surface 30a of the circuit board 30. The third bent portion 52j is a portion that bends the connecting portion 52f extending obliquely upward along the Z direction.

  In the inclined terminals 53 arranged in multiple stages, the position of the third bent portion 52j is closer to the closing portion 51b as the inclined terminal 53 is positioned upward as shown by the broken line in FIG. That is, the distance along the Z direction between the held portion 52a and the third bent portion 52j of the leg portion 52c connected to the held portion 52a is shorter as the inclined terminal 53 is located above. Thereby, the extending length of the inclined portion 52i is shorter as the inclined terminal 53 is positioned above.

  The extending length of the second horizontal portion 52k is longer as the inclined terminal 53 is positioned upward. In the present embodiment, in the inclined terminals 53 arranged in multiple stages, the interval D2 between the second horizontal portions 52k adjacent in the X direction has a constant value. In particular, in the present embodiment, the interval D2 is narrower than the interval D1 of the held portion 52a.

(Resin frame 60)
The resin frame 60 is interposed between the peripheral edges of the case 41 and the cover 42 that constitute the housing 40. As described above, the resin frame 60 is formed integrally with the housing 51 of the connector 50. As a material of the housing 51 and the resin frame 60, for example, a thermoplastic resin such as PBT can be employed. The resin frame 60 fulfills the function of connecting the case 41 and the cover 42 together with the closing part 51b of the housing 51 and the sealing function of sealing the inside of the housing 40 in a watertight manner. Accordingly, the closing portion 51b holds the terminal 52 and functions as the resin frame 60.

  As shown in FIG. 9, a closing part 51 b and a resin frame 60 are provided so as to surround the circuit board 30 having a substantially planar shape. The resin frame 60 is provided in a substantially U-shaped plane corresponding to the three sides of the circuit board 30. The blocking part 51 b is provided corresponding to the remaining one side of the circuit board 30. The ends of the resin frame 60 having a substantially U-shaped planar shape are connected to both ends in the Y direction of the closing portion 51b.

(Miniaturization of housing 40)
As described above, in the present embodiment, the housing 40 that houses the circuit board 30 has a waterproof structure using the housing 51 and the resin frame 60 without using the sealing material. The case 41 and the cover 42 are connected via the housing 51 and the resin frame 60. Therefore, a seal groove and a seal projection are not required, and the housing 40 can be thinned in the X direction. In particular, in this embodiment, the step part 51c is provided in the blocking part 51b. Thereby, the housing 40 can be made thinner in the X direction.

  Further, an inclined terminal 53 is used as the terminal 52. The inclined terminal 53 includes a second bent portion 52h and an inclined portion 52i between the held portion 52a and the first bent portion 52d. The second bent portion 52h and the inclined portion 52i are provided such that the first bent portion 52d of the leg portion 52c connected to the held portion 52a is positioned above the held portion 52a. Thereby, the front-end | tip position of the insertion part 52e can be made upward rather than before. Therefore, the size of the housing 40 can be reduced in the X direction.

  In particular, in the present embodiment, the second bent portion 52h and the inclined portion 52i are provided so that the circuit board 30 is positioned above the first stage held portion 52a from the lower side. Therefore, the size of the housing 40 can be further reduced in the X direction.

  Further, the inclined terminals 53 are held by the housing 51 in multiple stages. For this reason, compared with the structure which makes only the terminal 52 of the 1st step | stage the inclination terminal 53, size reduction of the housing | casing 40 can be achieved. Furthermore, since all the terminals 52 are the inclined terminals 53, the size of the housing 40 can be further reduced.

  Further, the inclined terminals 53 are held in multiple stages, and the bending angle of the second bent portion 52h is smaller as the upper inclined terminal 53 is. Thereby, in the inclined terminal 53 held in multiple stages, the interval D2 in the X direction of the second horizontal portion 52k, which is the portion between the third bent portion 52j and the first bent portion 52d, is set to X in the held portion 52a. It can be narrower than the distance D1 in the direction. Therefore, the size of the housing 40 can be further reduced in the X direction.

  Further, the distance along the Z direction between the held portion 52a and the third bent portion 52j of the leg portion 52c connected to the held portion 52a is shorter as the inclined terminal 53 is located above. Also in this manner, in the inclined terminal 53 held in multiple stages, the interval D2 in the X direction of the second horizontal portion 52k, which is the portion between the third bent portion 52j and the first bent portion 52d, is set in the held portion 52a. It can be made narrower than the distance D1 in the X direction. That is, the size of the housing 40 can be further reduced in the X direction.

(Bracket 70)
The bracket 70 is a member for attaching the housing 40 in which the circuit board 30 is accommodated to the vehicle 10. As shown in FIGS. 5, 6, and 12, the bracket 70 includes a base portion 71, a support portion 72, and a reinforcing portion 73.

  The base 71 is formed using a metal material. The base portion 71 is interposed between the flat portion 19 d (short side surface 19 c) of the battery 19 and the cover 42 of the housing 40. The base 71 is interposed between the heat insulating member 19e covering the short side surface 19c and the cover 42. A housing 40 is fixed to the base 71. A fixing structure between the housing 40 and the base 71 (bracket 70) will be described later.

  As illustrated in FIG. 4, the base 71 is provided so as to straddle the short side surface 19 c of the battery 19 in the Y direction. In the Y direction, the base 71 has substantially the same length as the heat insulating member 19e that covers the short side surface 19c. In the Z direction, the base 71 is provided so as to face only a predetermined part from the lower end of the battery 19. In the Z direction, the length of the base 71 is about 3/5 of the length of the short side surface 19c.

  The support portion 72 extends from the lower end of the base portion 71 to the side opposite to the housing 40 in the X direction. Of the bracket 70, the support portion 72 is a portion that supports the battery 19. The battery 19 is disposed on the support portion 72. The support portion 72 has a substantially rectangular planar shape along the XY plane.

  As shown in FIG. 14, a fixing hole 72 a for fixing the bracket 70 to the vehicle 10 is formed in the support portion 72. The fixing hole 72 a passes through the support portion 72 in the X direction, which is the thickness direction of the support portion 72. A screw 74, which is a metal fixing member, passes through the fixing hole 72a. The screw 74 is fastened to the body of the vehicle 10 or an attachment portion fixed to the body. Thus, the screw 74 fixes the bracket 70 in the Z direction.

  As shown in FIG. 12, the support portion 72 is formed integrally with the metal portion 75 provided in a predetermined range in the X direction from the lower end of the base portion 71, and the metal portion 75, and the base portion is more than the metal portion 75. And a resin portion 76 including a portion provided at a position away from 71.

  In this embodiment, the base 71, the reinforcement part 73, and the metal part 75 are formed by press work etc. from the same metal plate (for example, aluminum plate). As shown in FIG. 13, the metal portion 75 is bent at an angle of about 90 degrees with respect to the base portion 71. However, the base 71, the reinforcing portion 73, and the metal portion 75 may be configured as separate members and connected by welding or the like.

  The metal portion 75 is provided on the base 71 side in the X direction, and a first region 75a in which the metal is disposed in a solid shape, and a second region 75b provided at a position farther from the base 71 than the first region 75a ,have. In the second region 75b, a through hole 75c that penetrates the metal portion 75 in the Z direction is formed. In the present embodiment, a plurality of through holes 75c are formed in the second region 75b. Thus, the metal is partially punched in the second region 75b. In FIG. 13, the boundary between the first region 75a and the second region 75b is indicated by a broken line.

  The metal portion 75 is formed with a recess 75 d in accordance with the fixing position of the screw 74 to the vehicle 10. The recess 75d is recessed on the side away from the battery 19 in the Z direction. In the present embodiment, the recess 75d is formed by press working. The concave portions 75d are formed in a total of five locations, two in the first region 75a, two in the second region 75b, and one in the vicinity of the boundary between the first region 75a and the second region 75b. As shown in FIG. 14, fixing holes 72a are formed in the bottom of the recess 75d.

  The resin portion 76 is formed using a thermoplastic resin such as PP (polypropylene). The resin part 76 is formed integrally with the base part 71, the reinforcing part 73, and the metal part 75 by using the base part 71, the reinforcing part 73, and the metal part 75 as insert parts and injection molding. As shown in FIG. 12, the resin portion 76 has a tip end portion 76a, a covering portion 76b, a rib 76c, and a side wall portion 76d.

  As shown in FIG. 12, the distal end portion 76 a is disposed on the opposite side of the base portion 71 in the X direction with respect to the metal portion 75. The distal end portion 76 a is a portion on the distal end side of the support portion 72. The distal end portion 76a is provided at a position that does not overlap the metal portion 75 in the projection view from the Z direction.

  As shown in FIGS. 6 and 14, the covering portion 76 b is disposed on the metal portion 75 in the Z direction. The covering portion 76 b covers the surface of the metal portion 75 on the battery 19 side. The covering portion 76 b is also disposed in the through hole 75 c formed in the metal portion 75. The surface of the covering portion 76b on the battery 19 side is substantially flush with the surface of the tip portion 76a on the battery 19 side. The surfaces of the front end portion 76a and the covering portion 76b that are substantially flush with each other serve as the battery mounting surface 76e of the support portion 72.

  As shown in FIGS. 6 and 14, a through hole 76f is formed in the covering portion 76b. The through hole 76f penetrates the covering portion 76b in the Z direction. The through hole 76f is formed corresponding to the recess 75d. The bottom of the recess 75d is exposed from the resin portion 76 by the through hole 76f.

  As shown in FIG. 12, the rib 76c is provided on the lower surface side of the support portion 72 opposite to the battery mounting surface 76e. The rib 76c is provided on the surface of the lower surface with a predetermined thickness. The rib 76c includes a frame portion provided along the outer peripheral edge of the lower surface of the support portion 72, a lattice portion provided in a lattice shape, and an annular portion surrounding the periphery of the bottom portion of the recess 75d exposed on the lower surface side, have. The ribs 76c are provided on the surfaces of the metal portion 75, the tip portion 76a of the resin portion 76, and the filling portion of the through hole 75c in the covering portion 76b.

  The side wall portions 76 d are provided on three sides excluding the connecting side with the base portion 71 at the periphery of the support portion 72 having a substantially rectangular shape in plan view. The side wall part 76d protrudes from the front end part 76a and the covering part 76b toward the battery 19 in the Z direction. Both ends of the side wall portion 76 d provided continuously on the three sides are connected to the reinforcing portion 73. Therefore, the base portion 71, the reinforcing portion 73, and the side wall portion 76d form a side wall that surrounds the battery 19.

  The reinforcement part 73 has connected the edge parts of the metal part 75 in the base 71 and the support part 72 in the both sides of the Y direction which is the width direction. The reinforcing portion 73 extends opposite to the arrangement side of the housing 40 in the X direction, which is the thickness direction of the base portion 71. As shown in FIG. 13, the reinforcing portion 73 has a substantially trapezoidal planar shape along the ZX plane. In the reinforcing portion 73 having a substantially trapezoidal shape, the length of the lower base substantially matches the base portion 71. The reinforcing portion 73 is continuous with the first region 75 a in the metal portion 75.

  As described above, in the present embodiment, the base 71, the reinforcing portion 73, and the metal portion 75 are formed from the same metal plate. The reinforcing part 73 is continuously connected to one of the base part 71 and the metal part 75 and welded to the other. In the present embodiment, the reinforcing portion 73 is connected to the metal portion 75, and the reinforcing portion 73 is bent at an angle of approximately 90 degrees with respect to the metal portion 75. The reinforcing portion 73 is welded to the base portion 71.

  The latching portions 77 are formed on the reinforcing portion 73 and the side wall portion 76d of the support portion 72, respectively. In the present embodiment, the latching portion 77 formed on the reinforcing portion 73 is formed from the same metal plate as the reinforcing portion 73. The latching portion 77 of the side wall portion 76 d is formed as a part of the resin portion 76. For example, by using a metal member as an insert part, a metal latching portion can be provided on the side wall portion 76d.

(Fixing structure of bracket 70)
As described above, the metal portion 75 has the recess 75 d corresponding to the screw 74. As shown in FIG. 14, the depth of the recess 75 d is set so that the top 74 a of the screw 74 does not protrude with respect to the battery mounting surface 76 e of the support 72.

  The screw 74 is inserted through the fixing hole 72 a from the battery mounting surface 76 e side and protrudes to the lower surface side of the support portion 72. The lower surface of the head of the screw 74 is in contact with the peripheral portion of the fixing hole 72a on the inner surface of the recess 75d. In this contact state, the top 74a of the screw 74 is flush with the battery mounting surface 76e, or at a position recessed with respect to the battery mounting surface 76e. In the present embodiment, as shown in FIG. 14, the top 74a of the screw 74 is in a recessed position with respect to the battery mounting surface 76e. The outer surface opposite to the inner surface of the recess 75d is substantially flush with the surface of the resin portion 76 opposite to the battery mounting surface 76e, that is, the surface of the rib 76c.

(Fixing structure of housing 40)
As shown in FIGS. 3, 4, and 15 to 17, the electronic control unit 20 further includes a bolt 80, a nut 81, and a heat conducting member 82.

  The bolt 80 is fixed to the base 71. The bolt 80 is fixed to the base 71 while being inserted into a through hole 71 a formed in the base 71. As a fixing method, press-fit fixing or welding fixing can be considered. In the present embodiment, the bolt 80 is press-fitted and fixed to the base 71. That is, the bolt 80 is embedded in the base 71. In the X direction, one end of the bolt 80 is substantially flush with the surface of the base 71 on the battery 19 side. That is, the bolt 80 does not protrude from the base 71 to the battery 19 side.

  The bolt 80 protrudes from the base 71 toward the housing 40 in the X direction. A through hole 41d is formed in the attachment portion 41c of the case 41 constituting the housing 40. The through hole 41d penetrates the attachment portion 41c across the one surface 41e on the base 71 side of the attachment portion 41c and the back surface 41f opposite to the one surface 41e. The bolt 80 is inserted through the through hole 41d.

  The through hole 41 d has a diameter larger than the outer diameter of the shaft portion of the bolt 80. The through hole 41d has a larger diameter in the entire length as it approaches the base 71, that is, as it approaches the one surface 41e. The through hole 41d has a taper shape whose diameter increases toward the base 71 side. The opening area of the attachment portion 41c is the smallest at the opening end of the back surface 41f, and is the largest at the opening end of the one surface 41e.

  The nut 81 is attached to the bolt 80. The nut 81 holds the attachment portion 41 c between the base portion 71 and the nut 81. In this mounted state, one surface 41e of the attachment portion 41c is in contact with the surface of the base portion 71 on the cover 42 side. Further, the nut 81 is in contact with the back surface 41f.

  The heat conduction member 82 is filled in a region surrounded by the base 71, the wall surface of the through hole 41 d in the attachment portion 41 c, and the nut 81. The heat conducting member 82 is a heat radiating gel or a heat radiating grease. The heat conducting member 82 has flexibility. The heat conducting member 82 is also referred to as TIM (Thermal Interface Material). In the present embodiment, as shown in FIG. 16, the heat conducting member 82 is injected into the through hole 41 d before the nut 81 is attached. After the injection, a nut 81 is attached to the bolt 80 as shown in FIG. The heat conducting member 82 is blocked by the nut 81.

  Next, effects of the electronic control device 20 described above will be described.

  In the present embodiment, of the bracket 70, the support portion 72 that supports the battery 19 has a metal portion 75 that continues to the lower end of the metal base 71. A metal reinforcing portion 73 connects the base portion 71 and the metal portion 75. The heat generated by the circuit board 30 is transferred to the base 71 via the housing 40. The heat of the base portion 71 is transmitted to the reinforcing portion 73 and the metal portion 75 that are continuous with the base portion 71. Further, the heat of the reinforcing portion 73 is transmitted to the metal portion 75. Thus, the heat generated by the circuit board 30 is transferred from the housing 40 to the metal portion 75 of the support portion 72 via the base portion 71 and the reinforcing portion 73. Therefore, heat dissipation can be ensured.

  Further, the metal portion 75 is disposed at a position close to the base portion 71, and only the resin portion 76 (tip portion 76 a) is disposed at a position away from the base portion 71. Therefore, it is possible to reduce the weight of the electronic control device 20 as compared with the case where the entire support portion 72 is configured by the metal portion 75. As described above, according to the electronic control device 20 of the present embodiment, it is possible to reduce the weight while ensuring heat dissipation.

  In particular, in the present embodiment, the metal portion 75 includes a first region 75a in which the solid portion is arranged and a second region 75b provided at a position farther from the base portion 71 than the first region 75a. A through hole 75c is formed in the second region 75b. Thus, by making the base 71 vicinity in the metal part 75 into a solid arrangement | positioning, a thermal mass can be enlarged and heat dissipation can be ensured. In this embodiment, since the reinforcement part 73 is connected with the 1st area | region 75a, the heat of the reinforcement part 73 is efficiently transmitted to the metal part 75. FIG. On the other hand, the portion of the metal portion 75 away from the base portion 71 is the second region 75b in which the metal is partially punched, so that weight reduction can be achieved. Accordingly, it is possible to further reduce the weight while ensuring heat dissipation.

  In the present embodiment, a fixing hole 72 a is formed in the metal portion 75, and the periphery of the fixing hole 72 a is exposed from the resin portion 76 on the surface of the metal portion 75 on the battery 19 side. A metal screw 74 is inserted through the fixing hole 72 a and is in contact with the metal portion 75. Therefore, as shown by the white arrow in FIG. 18, the heat transmitted from the circuit board 30 to the metal part 75 via the base 71 and the reinforcing part 73 is released to, for example, the body of the vehicle 10 via the screw 74. Can do. Thereby, heat dissipation can be improved. In particular, heat can be efficiently radiated by the screw 74 inserted through the through hole 75c provided in the first region 75a.

  19 to 21 are contour diagrams showing thermal analysis results (simulation results). In FIG. 19, the extending length of the metal portion 75 is equal to the entire length of the support portion 72, and the length of the reinforcing portion 73 in the X direction is also the same as that of the metal portion 75. In FIG. 20, the length of the reinforcing portion 73 is about ３ of the entire length of the support portion 72 with respect to FIG. 19. In FIG. 21, the length of the metal part 75 is about 3/5 of the entire length of the support part 72 compared to FIG. 20. Specifically, the portion corresponding to the tip portion 76a was deleted.

  As can be seen from the comparison of FIGS. 19 to 21, the temperature of the base 71 to which the housing 40 is fixed did not change greatly. The average temperature of the circuit board 30 accommodated in the housing 40 increased by 1.9 ° C. in FIG. Moreover, it raised 0.04 degreeC in FIG. 21 with respect to FIG. Thus, also from the result of thermal analysis, if a part of the support portion 72 on the base 71 side is a metal portion 75 and the metal portion 75 and the base portion 71 are connected by the reinforcing portion 73, heat dissipation can be ensured. It became clear.

  In the present embodiment, of the surface of the metal portion 75 opposite to the battery 19, the peripheral portion of the fixing hole 72 a is exposed from the resin portion 76. Therefore, heat can be directly released from the metal part 75 to the vehicle 10. Further, according to the above configuration, the metal part 75 is interposed between the head of the screw 74 and the vehicle 10, and the resin part 76 is not interposed. For this reason, the screw 74 does not loosen due to the creep characteristics of the resin. Therefore, the bracket 70 can be stably fixed to the vehicle 10 over a long period of time. That is, the thermal connection relationship between the screw 74 and the metal part 75 and the vehicle 10 can be maintained over a long period of time.

  In particular, in the present embodiment, the fixing hole 72a is formed in the concave portion 75d of the metal portion 75, and the top portion 74a of the screw 74 is flush with the battery mounting surface 76e or a position where it is recessed with respect to the battery mounting surface 76e. It has become. Therefore, the battery 19 can be stably disposed on the support portion 72. The outer surface opposite to the bottom surface of the recess 75d is substantially flush with the surface opposite to the battery mounting surface 76e of the support portion 72, that is, the surface of the rib 76c. Therefore, the bracket 70 can be stably fixed to the vehicle 10.

  Incidentally, the bracket 70 is fixed to the vehicle 10 in the Z direction by screws 74. Further, when the hook member 25 has only the main portion 25a, the bracket 70 is fixed to the clamp member 24 in the Z direction. Thus, when the fixing direction of the bracket 70 with respect to the vehicle 10 and the fixing direction of the bracket 70 with respect to the clamp member 24 are the same direction, the bracket 70 is likely to be affected by vehicle vibration or the like. That is, the bracket 70 is likely to vibrate.

  On the other hand, in this embodiment, the hook member 25 has the main part 25a and the branch part 25b branched from the middle of the main part 25a. The main portion 25 a extends in the Z direction from the clamp member 24 and is fixed to a latching portion 77 formed on the side wall portion 76 d of the support portion 72. Therefore, the bracket 70 is fixed to the clamp member 24 in the Z direction. On the other hand, the branch portion 25 b extends in the X direction from the branch point in the main portion 25 a and is fixed to the latching portion 77 of the reinforcing portion 73. That is, the portion from the fixed end of the main portion 25a to the branch point to the branch point and the branch portion 25b extend from the clamp member 24 in the Z direction and extend toward the housing 40 in the X direction and are fixed to the reinforcing portion 73. Has been. Therefore, the bracket 70 is fixed to the clamp member 24 in the Z direction and the X direction.

  As described above, the bracket 70 is fixed to the clamp member 24 in two directions in the Z direction and the X direction. The fixing direction of the bracket 70 with respect to the clamp member 24 includes a direction different from the Z direction that is the fixing direction of the bracket 70 with respect to the vehicle 10. Therefore, vibration of the bracket 70 can be suppressed. As a result, the vibration of the circuit board 30 accommodated in the housing 40 can be suppressed.

  In particular, a battery as a box-shaped member is usually sandwiched between a clamp portion and a support portion (battery tray) by a hook member and a clamp member as connecting members. Therefore, according to this embodiment, vibration of the bracket 70 can be suppressed without increasing the number of parts.

  Further, in the portion where the housing 40 is fixed to the bracket 70, the heat generated by the circuit board 30 is transmitted from the mounting portion 41 c of the case 41 constituting the housing 40 to the base 71 via the bolt 80 and the nut 81. . Further, it is transmitted from the mounting portion 41 c to the base portion 71. The case 41, the base 71, the bolt 80, and the nut 81 are formed using a metal material. However, in the contact between metals, thermal resistance becomes a problem because the contact area is microscopically due to the influence of swell and surface roughness.

  On the other hand, in this embodiment, the bolt 80 is fixed to the base 71, and the bolt 80 protruding from the base 71 passes through the through-hole 41d of the mounting portion 41c. Further, a nut 81 is attached to the bolt 80, and an attachment portion 41 c is sandwiched between the nut 81 and the base portion 71. A heat conduction member 82 is filled in a region surrounded by the base 71, the wall surface of the through hole 41d in the attachment portion 41c, and the nut 81, that is, a closed space.

  Since the heat conduction member 82 is filled in the closed space, the heat conduction member 82 can be protected from, for example, high-pressure washing water. In addition, it is possible to suppress a positional shift or a drop of the heat conducting member 82 due to a temperature change in the use environment. That is, the heat conducting member 82 can be brought into contact with the mounting portion 41 c, the base portion 71, the bolt 80, and the nut 81 for a long period of time. Therefore, the thermal resistance of the fixed part of the housing 40 and the bracket 70 can be reduced over a long period of time. That is, heat dissipation can be ensured over a long period of time.

  In particular, in the present embodiment, the diameter of the through hole 41d increases as it approaches the base 71, that is, as it approaches the surface 41e. Thereby, the opening area of the attachment part 41c is the smallest at the opening end of the back surface 41f, and the maximum at the opening end of the one surface 41e. Therefore, the tolerance of the through hole 41d with respect to the bolt 80 can be guaranteed at the open end of the back surface 41f. Thereby, the position shift of the housing | casing 40 in a YZ surface can be suppressed. Moreover, the contact area of the heat conductive member 82, the attachment part 41c, and the base 71 can be increased by setting it as the taper-shaped through-hole 41d. Thereby, heat dissipation can be improved.

(Second Embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 22, in this embodiment, the hook member 25 has a first extending portion 25c, a second extending portion 25d, and a bent portion 25e. The first extending portion 25c extends from the clamp member 24 in the Z direction. The second extending portion 25d extends in the X direction and is fixed to the reinforcing portion 73. The end of the second extending portion 25d on the reinforcing portion 73 side is also bent in a J shape. A J-shaped end portion is latched to the latching portion 77 of the reinforcing portion 73.

  The bent portion 25e is provided between the first extending portion 25c and the second extending portion 25d. The bent portion 25e bends the second extended portion 25d at an angle of approximately 90 degrees with respect to the first extended portion 25c. Thus, the hook member 25 is substantially L-shaped.

  As described above, the hook member 25 extends from the clamp member 24 in the Z direction and extends toward the housing 40 in the X direction, and is fixed to the reinforcing portion 73. Therefore, also in this embodiment, the bracket 70 is fixed to the clamp member 24 in two directions in the Z direction and the X direction. The fixing direction of the bracket 70 with respect to the clamp member 24 includes a direction different from the Z direction that is the fixing direction of the bracket 70 with respect to the vehicle 10. Therefore, vibration of the bracket 70 can be suppressed. As a result, the vibration of the circuit board 30 accommodated in the housing 40 can be suppressed.

(Third embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 23, in this embodiment, the hook member 25 extends from the clamp member 24 while being inclined with respect to the Z direction. The hook member 25 extends obliquely from the clamp member 24. For example, the extending direction of the hook member 25 forms an angle of approximately 45 degrees with respect to each of the Z direction and the X direction. A J-shaped end portion is latched to the latching portion 77 of the reinforcing portion 73.

  As described above, the hook member 25 extends from the clamp member 24 in the Z direction and extends toward the housing 40 in the X direction, and is fixed to the reinforcing portion 73. Therefore, also in this embodiment, the bracket 70 is fixed to the clamp member 24 in two directions in the Z direction and the X direction. The fixing direction of the bracket 70 with respect to the clamp member 24 includes a direction different from the Z direction that is the fixing direction of the bracket 70 with respect to the vehicle 10. Therefore, vibration of the bracket 70 can be suppressed. As a result, the vibration of the circuit board 30 accommodated in the housing 40 can be suppressed.

  That is, if the hook member 25 extends in the Z direction and also extends in the X direction and connects the clamp member 24 and the reinforcing portion 73, vibration of the bracket 70 can be suppressed.

(Fourth embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 24, in this embodiment, the through hole 41d formed in the attachment portion 41c of the case 41 has a large diameter portion 41g and a small diameter portion 41h. The large-diameter portion 41g is provided in a partial range from the end portion on the base portion 71 side, that is, the one surface 41e. The large diameter portion 41g has a larger diameter than the small diameter portion 41h. The large diameter portion 41g of the present embodiment has a larger diameter as it approaches the base portion 71.

  The small diameter portion 41h is a portion closer to the nut 81 than the large diameter portion 41g. The small diameter portion 41h has a smaller diameter than the large diameter portion 41g. In the present embodiment, the diameter of the small diameter portion 41h is constant over the entire length.

  Thus, in this embodiment, the opening area of the attachment portion 41c is the smallest at the small diameter portion 41h, that is, the opening end of the back surface 41f, and is the maximum at the opening end of the one surface 41e. Therefore, it is possible to increase the contact area between the heat conducting member 82, the attachment portion 41c, and the base portion 71 while improving the heat dissipation while suppressing the displacement of the housing 40 on the YZ plane.

  In addition, in FIG. 24, the example of the taper-shaped large diameter part 41g was shown. However, it is also possible to employ a large-diameter portion 41g having a constant diameter over the entire length. In this case, the large diameter portion 41g may have a diameter larger than the maximum diameter of the small diameter portion 41h. This also makes it possible to increase the contact area between the heat conducting member 82, the attachment portion 41c, and the base 71 as compared to the through-hole 41d having a constant overall length.

(Fifth embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 25, in this embodiment, the diameter of the through hole 41d is constant over the entire length. Also in this embodiment, since the heat conduction member 82 is filled in the region surrounded by the base 71, the wall surface of the through hole 41d in the attachment portion 41c, and the nut 81, that is, the closed space, the housing 40 and the bracket 70 are fixed. The thermal resistance of the portion can be reduced over a long period of time, and as a result, heat dissipation can be secured over a long period of time.

(Sixth embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 26, in this embodiment, an injection hole 41 i is formed in the attachment portion 41 c of the case 41. The injection hole 41i communicates with the through hole 41d. The injection hole 41i extends, for example, in the Y direction.

  When the injection hole 41 i is thus provided, after the nut 81 is attached to the bolt 80, heat conduction from the injection hole 41 i to the base portion 71, the wall surface of the through hole 41 d in the attachment portion 41 c, and the region surrounded by the nut 81. Member 82 can be injected. Therefore, the heat conductive member 82 can be prevented from adhering to the screwed portion of the nut 81 in the bolt 80 and the contact portion of the nut 81 on the back surface 41f of the mounting portion 41c. That is, loosening of the housing 40 with respect to the bracket 70 and increase in thermal resistance can be suppressed.

(Seventh embodiment)
This embodiment can refer to the preceding embodiment. For this reason, the description about the part which is common in the electronic control apparatus 20, the battery 19, and the fixing structure of the electronic control apparatus 20 shown in the preceding embodiment is omitted.

  As shown in FIG. 27, in this embodiment, an injection hole 71 b is formed in the base 71. The injection hole 71b communicates with the through hole 41d. The injection hole 71b is formed at a position that overlaps the end of the through hole 41d on the base 71 side, that is, the opening end of the one surface 41e, as viewed from the X direction.

  With the injection hole 71b in this way, after the nut 81 is mounted on the bolt 80, heat conduction from the injection hole 71b to the base portion 71, the wall surface of the through hole 41d in the mounting portion 41c, and the region surrounded by the nut 81 is conducted. Member 82 can be injected. Therefore, the heat conductive member 82 can be prevented from adhering to the screwed portion of the nut 81 in the bolt 80 and the contact portion of the nut 81 on the back surface 41f of the mounting portion 41c. That is, loosening of the housing 40 with respect to the bracket 70 and increase in thermal resistance can be suppressed.

  Moreover, the base 71 is interposed between the housing 40 and the battery 19, and the battery 19 places the injection hole 71 b in a position where it cannot be seen from the outside. For this reason, it is difficult for high-pressure washing water or the like to enter the injection hole 71b. In other words, the heat conducting member 82 is difficult to get wet. Therefore, heat dissipation can be ensured over a long period of time.

  The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of elements shown in the embodiments. The disclosure can be implemented in various combinations. The technical scope disclosed is not limited to the description of the embodiments. The several technical scopes disclosed are indicated by the description of the claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the claims. .

  Although an example in which the housing 40 is disposed adjacent to the short side surface 19c of the battery 19 has been shown, the present invention is not limited to this. You may arrange | position next to the long side surface 19b. That is, the housing 40 may be disposed adjacent to the side surfaces 19b and 19c having the flat surface portion 19d.

  Although the example of the battery 19 was shown as a box-shaped member, it is not limited to this. Other than that, any arrangement may be employed as long as it is arranged in a compartment separated from the vehicle compartment by the partition wall 16. For example, the engine 18, the relay box 21, the air cleaner, or the like can be a box-shaped member.

  Although the example in which the battery 19 is provided with the heat insulation member 19e was shown, it is not limited to this.

  Although the example of the engine compartment 17 in which the engine 18 is arrange | positioned as a compartment and the example of the bonnet 12 was shown as a lid | cover on a compartment, it is not limited to this. A compartment in which the engine 18 is not arranged can also be adopted. For example, when the engine 18 is not provided as a drive source like a fuel cell vehicle or an electric vehicle, it can be applied to a compartment in which a fuel cell or a motor as a drive source is arranged. When the engine 18 is not provided, the lid on the compartment is also referred to as a lid.

  Further, the present invention is not limited to a configuration in which the engine 18 is disposed in front of the vehicle interior, but can be applied to a configuration in which the engine 18 is disposed behind the vehicle interior. That is, it is good also considering the engine compartment 17 located behind the vehicle interior as a compartment.

  Although the example of engine ECU was shown as electronic control unit 20, it is not limited to this. The present invention can also be applied to other electronic control devices.

  The configurations of the circuit board 30, the housing 40, and the connector 50 are not limited to the above examples. However, according to the configuration described above, the casing 40 can be thinned in the X direction, which is suitable for disposing the casing 40 in which the circuit board 30 is accommodated in a narrow space adjacent to the side surface of the box-shaped member. .

  In order to improve heat transfer from the circuit board 30 to the housing 40, a heat radiating material having good thermal conductivity such as a heat radiating gel or a potting material may be disposed in the internal space of the housing 40.

  Although an example in which the case 41 and the cover 42 are assembled by heat welding has been shown, the present invention is not limited to this. A well-known assembly method such as screw fastening may be employed.

  Although the example of the screw 31 was shown as a fixing member which fixes the circuit board 30 to the case 41, it is not limited to this. A press-fit type fixing member or a caulking member can also be used.

  Although the example of the inclination terminal 53 was shown as the terminal 52 of the connector 50, it is not limited to this. A well-known terminal having an approximately L shape may be employed.

  Although the metal part 75 has shown the example which has the 1st area | region 75a of the solid arrangement | positioning, and the 2nd area | region 75b in which the through-hole 75c was formed, it is not limited to this. The entire metal portion 75 may be solid, that is, the first region 75a. The entire metal part 75 may be the second region 75b.

  The fixed portion of the electronic control device 20 to the vehicle 10 is not limited to the support portion 72 of the bracket 70. The bracket 70 can be fixed at other portions. Further, it can be fixed to an attachment portion such as a radiator support via the clamp member 24.

  An example of a metal screw 74 is shown as a fixing member for fixing the bracket 70 to the vehicle 10. However, it is not limited to this. As a fixing member that is inserted through the fixing hole 72a, a press-fit type fixing member or a caulking member may be used.

  The example in which the periphery of the fixing hole 72a in the metal portion 75 is exposed from the resin portion 76 by the through hole 76f formed in the resin portion 76 is shown. However, the periphery of the fixed hole 72a may be covered with the resin portion 76.

  As an example of the connecting member that connects the clamp member 24 and the bracket 70, the hook member 25 that is hooked on the hooking portion 77 is shown. However, the connecting member is not limited to the hook member 25. A connecting member that connects the clamp member 24 and the bracket 70 by a method other than the latching may be employed.

  In the example, the hook member 25 is extended in the Z direction and extended in the X direction. However, the hook member 25 having only the main portion 25a can be employed.

  The structure for fixing the housing 40 to the base 71 is not limited to the above example. For example, a configuration without the heat conducting member 82 may be employed. Further, the housing 40 may be fixed to the base 71 by a fixing means other than the bolt 80 and the nut 81. However, when a structure in which the bolt 80 and the nut 81 embedded in the base 71 are used and the mounting portion 41c of the case 41 is sandwiched between the nut 81 and the base 71 is adopted, the housing 40 is assembled to the bracket 70 (base 71). Cheap.

DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Windshield, 12 ... Bonnet, 13 ... Front fender, 14 ... Headlight, 15 ... Front grille, 16 ... Bulkhead, 16a ... Through-hole, 17 ... Engine compartment, 18 ... Engine, 19 ... Battery, 19a ... upper surface, 19b ... long side surface, 19c ... short side surface, 19d ... flat surface portion, 19e ... heat insulation member, 20 ... electronic control device, 21 ... relay box, 22, 23 ... wire harness, 24 ... clamp member, 25 ... hook 25a ... first extending portion, 25d ... second extending portion, 25e ... bent portion, 30 ... circuit board, 30a ... one side, 30b ... back side, 30c ... through hole 30d ... fixing hole, 31 ... screw, 32 ... solder, 40 ... housing, 40a ... opening, 41 ... case, 41a ... pedestal part, 41b ... screw hole 41c ... Mounting part, 41d ... Through hole, 41e ... One side, 41f ... Back side, 41g ... Large diameter part, 41h ... Small diameter part, 41i ... Injection hole, 42 ... Cover, 50 ... Connector, 51 ... Housing, 51a ... Cylinder part , 51b ... closed part, 51c ... step part, 52 ... terminal, 52a ... held part, 52b ... fitting part, 52c ... leg part, 52d ... first bent part, 52e ... insertion part, 52f ... connecting part, 52g ... 1st horizontal part, 52h ... 2nd bending part, 52i ... inclined part, 52j ... 3rd bending part, 52k ... 2nd horizontal part, 53 ... inclined terminal, 60 ... resin frame, 70 ... bracket, 71 ... base , 71a ... through hole, 71b ... injection hole, 72 ... support part, 72a ... fixing hole, 73 ... reinforcing part, 74 ... screw, 74a ... top part, 75 ... metal part, 75a ... first region, 75b ... second Area, 75c ... through hole, 75d ... concave, 76 Resin part, 76a ... tip part, 76b ... covering part, 76c ... rib, 76d ... side wall part, 76e ... battery mounting surface, 76f ... through hole, 77 ... latching part, 80 ... bolt 80 ... nut, 82 ... heat conduction Element

Claims (7)

An electronic control unit arranged next to the side surface (19c) of the box-shaped member (19) in the compartment (17) separated from the vehicle interior by the partition wall (16) and below the lid (12) There,
A circuit board (30);
A housing (40) for housing the circuit board;
A member for attaching the housing to the vehicle, the metal base portion (71) interposed between the side surface of the box-shaped member and the housing, and the housing being fixed, the base portion A support portion (72) extending from the lower end of the support portion to the opposite side of the housing and supporting the box-shaped member, and a width orthogonal to both the extending direction of the support portion and the thickness direction of the support portion Brackets (70) having metal reinforcements (73) connecting the ends of the base and the support on both sides in the direction;
With
The support part is integrally formed with the metal part (75) provided in a predetermined range in the extending direction from the lower end of the base part and the metal part, and is separated from the base part than the metal part. A resin portion (76) including a portion provided at the position,
An electronic control device in which the base portion and the metal portion are connected by the reinforcing portion.   The metal part is provided on the base part side in the extending direction, and is provided in a solid area in the first region (75a) and at a position farther from the base part than the first region, and the through hole (75c). 2. The electronic control device according to claim 1, further comprising: a second region (75 b) formed with A fixing member (74) for fixing the bracket to the vehicle;
The electronic control device according to claim 1, wherein a fixing hole (72 a) through which the fixing member is inserted is formed in the support portion. The fixing hole is formed in the metal part,
The fixing member is formed using a metal material,
Of the surface of the metal part on the box-shaped member side, the periphery of the fixing hole is exposed from the resin part,
The electronic control device according to claim 3, wherein the fixing member is in contact with the metal part.   The electronic control device according to claim 4, wherein the periphery of the fixing hole is exposed from the resin portion of the surface of the metal portion opposite to the box-shaped member. The metal part has a recess (75d) that is recessed on the opposite side to the box-shaped member in the thickness direction,
The fixing hole is formed at the bottom of the recess,
The top part (74a) of the fixing member is flush with the surface (76e) on the side of the box-shaped member in the resin part, or a position recessed with respect to the surface,
The electronic control device according to claim 5, wherein an outer surface of the bottom portion is flush with the resin portion.   The electronic control device according to claim 3, wherein the fixing member is a screw.

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