JP2016192888A - Electronic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic control device which can improve heat dissipation while being reduced in the size in the thickness direction.SOLUTION: An electronic control device 20 comprises: a circuit board on which a heating element is mounted; a bag-shaped metal housing; a connector which is arranged on an opening of the housing; and a bracket which is attached to a vehicle. The housing includes, as an outer surface, a bottom surface, an opposite surface facing a flat surface part, a rear surface of the opposite surface, and a pair of connection surfaces connecting both ends in the Y direction of the opposite surface and the rear surface. The connection surface has a slant surface part in which an interval between the pair of connection surfaces becomes narrower as approaching the rear surface. The bracket includes: a metal intervention part which is intervened between the flat surface part and the opposite surface; and a pair of metal plate spring parts 51 which extends from both ends of the intervention part toward the rear surface side, is respectively brought into contact with the slant surface parts of the pair of connection surfaces, and applies a reaction force due to spring deformation to the corresponding slant surface parts. The electronic control device 20 includes a heat transfer member 60 between the slant surface part and the plate spring part 51.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electronic control device including a circuit board, a housing for housing the circuit board, and a mounting bracket.

  For example, an electronic control device including a circuit board, a housing for housing the circuit board, and a mounting bracket is disclosed in Patent Document 1.

JP 2014-180949 A

  In the case of using a bracket whose metal is fixed at least to the housing, the housing and the bracket are generally fixed using screws. For example, in the thickness direction of the circuit board, a bracket is overlaid on the housing, and screws are fastened in this state. In this case, the physique of the electronic control unit increases in the thickness direction by the thickness of the bracket and the screw (head). On the other hand, in patent document 1, a flange part is provided in the opening periphery of the upper case and lower case which comprise a housing | casing, and the bracket is screw-fastened by this flange part. For this reason, the increase in the physique in the thickness direction can be suppressed. However, since the flange portion is provided, the physique in the direction orthogonal to the thickness direction is increased.

  In order to suppress an increase in physique, a structure in which a concave portion is provided, for example, on the upper surface of the housing, and a bracket is disposed in the concave portion and screwed can be considered. However, if the recess is provided in the housing, a dead space in which the electronic component cannot be mounted on the circuit board increases, and the degree of freedom of arrangement of the electronic component decreases. Thus, when fixing a housing | casing and a bracket using a screw, the increase in a physique and the increase in the dead space in a circuit board become a problem.

  On the other hand, a structure in which the bracket is provided with a pair of metal leaf springs as a fixed portion to the housing, and both sides of the housing are pressed by the leaf springs in the first direction orthogonal to the thickness direction is also conceivable. . However, when both the housing and the leaf spring portion are made of metal, the thermal resistance between the housing and the leaf spring portion is increased. That is, the metal housing and the metal leaf spring portion are not easily in surface contact and are likely to be in point contact, so that the thermal resistance between both members is increased. For this reason, in the electronic control device, there is a possibility that the heat dissipation with respect to the heat in the housing is lowered.

  The present invention has been made in view of the above problems, and an object thereof is to provide an electronic control device that can improve heat dissipation while being thinned in the thickness direction.

In order to achieve the above object, the present invention provides:
An electronic control device attached to an attached body having a flat portion,
A circuit board (30) on which a heating element (30a) that generates heat by operation is mounted;
A bag-shaped metal housing (31) having a bottom (40) at one end in the depth direction and containing a circuit board;
A member for attaching the casing to the body to be attached, and a bracket (33) fixing the casing;
When the direction perpendicular to the depth direction and the plane portion is the thickness direction, and the direction perpendicular to the depth direction and the thickness direction is the width direction,
The housing is
As an outer surface, a bottom surface (43a) which is an outer surface of the bottom portion, a facing surface (43b) disposed to face the flat portion, a back surface (43c) opposite to the facing surface in the thickness direction, and a width direction on the facing surface and the back surface A pair of connecting surfaces (43d) for connecting the both ends of each,
Each of the pair of connection surfaces has at least a part in the depth direction and a predetermined range in the thickness direction, and has a slope portion (43e) in which the distance between the pair of connection surfaces in the width direction becomes narrower toward the back surface,
The bracket is
A metal interposition part (50) interposed between the flat part and the opposing surface;
A metal that extends from both ends in the width direction of the interposition part and is folded back so as to face the interposition part in the thickness direction, contacts with the slope part of the pair of connecting surfaces, and applies a reaction force due to spring deformation to the corresponding slope part A pair of folded portions (51) made of,
Furthermore, the heat transfer member (60) which is arrange | positioned between a slope part and a folding | returning part and transmits the heat emitted from the heat generating element to a bracket is provided.

  Thus, according to the present invention, a reaction force due to spring deformation can be applied to the slope portions of the connecting surface located at both ends in the width direction of the housing by the metal leaf spring portions. Since the slope portion is formed so that the distance between the pair of connecting surfaces in the width direction becomes narrower as it approaches the back surface, the case can be pressed against the intervening portion side in the thickness direction by the reaction force described above. Thereby, a housing | casing can be fixed to a bracket. Therefore, for example, compared to a structure in which the bracket is screwed to the housing in the thickness direction, or a structure in which the connection surface is not a slope but a surface along the thickness direction, and the bottom surface and the back surface are sandwiched by the bracket, the electronic control device in the thickness direction. Can be thinned. In addition, the configuration of the electronic control device can be simplified.

  Furthermore, in the present invention, since the heat transfer member is disposed between the metal slope portion and the metal leaf spring portion, the slope portion, the leaf spring portion, and the heat transfer member are not provided. The thermal resistance between the two can be reduced. Therefore, according to the present invention, heat generated from the heating element can be transferred to the leaf spring portion via the slope portion and the heat transfer member. For this reason, this invention can radiate | emit the heat emitted from the heat generating element from a leaf | plate spring, and can improve heat dissipation.

One of the other disclosed inventions is an electronic control device that is attached to an attached body (19) having a planar portion,
A circuit board (30) on which a heating element (30a) that generates heat by operation is mounted;
A connector (32) mounted on the circuit board and electrically relaying the circuit board and the external device;
A housing (31b) having a bottom wall portion (40) on one end side in the depth direction and having a connector disposed on the other end side and housing a part of the connector and a circuit board;
A member for attaching the casing to the body to be attached, and a bracket (33) fixing the casing;
When the direction perpendicular to the depth direction and the plane portion is the thickness direction, and the direction perpendicular to the depth direction and the thickness direction is the width direction,
The housing has a pair of receiving portions provided so that the opposing surface (43b) disposed to face the flat surface portion, the back surface (43c) opposite to the opposing surface in the thickness direction, and the back surface positioned in the width direction. (84, 89)
The bracket is folded back so as to extend from both ends in the width direction of the interposition part and to face the interposition part in the thickness direction while interposing the metal interposition part (50) interposed between the flat part and the opposing surface. A pair of metal folded portions (51, 90) that are in contact with the portions,
In the pair of receiving portions, the contact position with the folded portion is a position between the back surface and the opposing surface in the depth direction,
In a state where the receiving portion is sandwiched between the interposition portion and the folded portion, one of the pair of receiving portions and the pair of folded portions gives a reaction force due to elastic deformation to the other,
Furthermore, the receiving portion is a heat transfer member that transfers heat generated from the heat generating element to the bracket.

  Also by this, the same effects as those of the other inventions described above can be obtained.

  The reference numerals in parentheses described in the claims and in this section indicate the correspondence with the specific means described in the embodiments described later as one aspect, and the technical scope of the invention is as follows. It is not limited.

It is a top view showing the schematic structure of the vehicles by which the electronic control unit of an embodiment is arranged. 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 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 perspective view which shows an electronic control apparatus. It is a top view which shows the housing | casing in which the connector and the circuit board were accommodated among electronic control apparatuses. It is a top view which shows the housing | casing in which the circuit board was accommodated. It is sectional drawing which follows the XX line of FIG. It is an expanded view which shows the structure of a bracket among electronic control apparatuses. It is sectional drawing which follows the XII-XII line | wire of FIG. 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 controller of the modification 1. It is a perspective view which shows the bracket of the modification 1. It is a perspective view which shows the electronic controller of the modification 2. It is sectional drawing which shows the housing | casing in which the circuit board was accommodated among the electronic control apparatuses of the modification 3. It is the top view seen from the upper case side which shows the housing | casing in which the circuit board was accommodated. It is a top view which shows the state which abbreviate | omitted the lower case. It is the top view seen from the connector side. It is the top view seen from the upper case side which shows an electronic controller. It is the top view seen from the connector side. It is sectional drawing which follows the XXIV-XXIV line | wire of FIG. It is the top view seen from the bottom wall part side. It is sectional drawing which shows the electronic controller of the modification 4.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings shown below, common or related elements are given the same reference numerals. Further, the depth direction of the casing is the Z direction, the thickness direction of the casing orthogonal to the Z direction (the thickness direction of the circuit board) is the X direction, and the width direction of the casing is orthogonal to both the Z direction and the X direction. Shown as direction.

  First, based on FIG.1 and FIG.2, an example of 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 18, a vehicle auxiliary machine, and the like are arranged in an engine compartment 17 below the hood 12 that is separated from a passenger compartment (cabin) in which an occupant is boarded by a partition wall 16. The engine compartment 17 is also referred to as an engine room. The engine compartment 17 corresponds to a compartment, and the bonnet 12 corresponds to a lid on the compartment. The engine compartment 17 is defined by a front fender 13, a front grill 15, a partition wall 16, and the like.

  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 (Electric Control Unit). The battery 19 can be said to be a box-shaped member. The electronic control unit 20 executes calculation of 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. The electronic control unit 20 controls the supply of electric power to the electrical components mounted on the vehicle 10 by this control signal. 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. As a result, signals can be exchanged between the electronic control unit 20 and the various ECUs and controlled objects of the body. In order to distinguish the wire harness 22 and the wire harness 23 from each other, the wire harness 22 can be referred to as an engine-side harness, and the wire harness 23 can be referred to as a relay-side harness.

  Next, the battery 19 and the electronic control unit 20 disposed next to the battery 19 will be described with reference to FIGS.

  The battery 19 is charged and discharged in order to control various electric devices and electronic devices. As shown in FIGS. 3 and 4, the battery 19 has a substantially rectangular parallelepiped shape, and an outer surface includes an upper surface 19 a on which terminals and the like (not shown) are formed, and a long side surface 19 b and a short side surface 19 c which are side surfaces. And a bottom surface (not shown) opposite to the top surface 19a. The long side surface 19b is a side surface connected to the long side of the upper surface 19a having a substantially rectangular shape, and the short side surface 19c is a side surface connected to 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 bottom plate portion 55 that constitutes a tray portion 54 of the bracket 33 described later. The battery 19 corresponds to the mounted body in the claims. That is, in this embodiment, the battery 19 is adopted as an example of the attached body. However, the present invention is not limited to this.

  The battery 19 is fixed to the tray portion 54 and eventually the vehicle 10. 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. As shown in FIGS. 3, 5, and 6, both ends of the clamp member 24 extend outward from the upper surface 19 a. J-shaped hook members 25 are connected to both ends of the clamp member 24. In the hook member 25, the lower end portion opposite to the connection end with the clamp member 24 is bent in a J-shape. Of the horizontal plate portions 56 and 57 constituting the tray portion 54 described above, a latching portion 59 is formed on the horizontal plate portion 57 disposed opposite to the long side surface 19b of the battery 19, and a hook is attached to the latching portion 59. The lower end portion of the member 25 is latched. As described above, the battery 19 is sandwiched between the bottom plate portion 55 and the clamp member 24.

  As shown in FIGS. 3 to 12, the electronic control unit 20 includes a circuit board 30, a housing 31, a connector 32, a bracket 33, and a heat transfer member 60. The circuit board 30 is formed by mounting electronic components on a printed board. The circuit board 30 is mounted with, for example, a heating element 30a that generates heat by operating as an electronic component. As shown in FIG. 10, the circuit board 30 is accommodated in a casing 31 and is fixed to the casing 31 by fixing means (not shown). A connector 32 is also mounted on the circuit board 30. In FIG. 10, illustration of electronic components is omitted for convenience. In FIG. 10, as an example, only one printed circuit board is accommodated in the housing 31.

  The casing 31 accommodates the circuit board 30 in its internal space. In the present embodiment, the casing 31 is formed using a metal material. As a result, the housing 31 functions to radiate the heat generated by the heating element 30 a to the outside of the housing 31. As shown in FIG. 10, the housing 31 has a bag shape, and has a bottom 40 on one end side in the Z direction that is the depth direction of the housing 31, and an opening 41 on the other end opposite to the bottom 40. have. The housing 31 has a side wall portion 42 that is connected to the bottom portion 40 and forms a space for accommodating the circuit board 30 together with the bottom portion 40. That is, the side wall part 42 is provided in an annular shape. In addition, since the bottom part 40 forms a part of wall part of the housing | casing 31 with the side wall part 42, it can also be called the bottom wall part 40. FIG.

  The casing 31 having such a bag shape can be configured by a single member or can be configured by assembling a plurality of members. In this embodiment, the housing | casing 31 is comprised with the single member by employ | adopting the impact processing method using a punch. When the impact processing method is employed, the length in the X direction, that is, the thickness of the housing 31 can be reduced as compared with the assembly of a single member or a plurality of members using the aluminum die casting method.

  As shown in FIGS. 8, 9, and 10, the housing 31 has, as its outer surface, a bottom surface 43 a that is an outer surface of the bottom portion 40, and a facing surface 43 b that is disposed so as to face the flat portion 19 d of the battery 19. It has a back surface 43c opposite to the facing surface 43b, and a pair of connecting surfaces 43d that connect both ends of the facing surface 43b and the back surface 43c in the Y direction. The pair of connecting surfaces 43d is at least part of the Z direction and is inclined to the predetermined range in the X direction so that the distance between the pair of connecting surfaces 43d in the Y direction becomes narrower as the back surface 43c is approached. Respectively. It can also be said that the pair of inclined surface portions 43e are inclined so that the interval between the pair of inclined surface portions 43e gradually decreases from the opposing surface 43b to the back surface 43c. The pair of slope portions 43e are provided to face each other. The interval between the pair of connecting surfaces 43d is a distance in the Y direction from one connecting surface 43d to the other connecting surface 43d.

  In the present embodiment, the opposing surface 43b and the back surface 43c are substantially flat surfaces. And the connection surface 43d becomes the slope part 43e except the bending part which is a connection part with the opposing surface 43b and the back surface 43c. That is, almost the entire connection surface 43d is a slope portion 43e. For this reason, as shown in FIG. 9, the housing 31 has a substantially trapezoidal shape as viewed from the Z direction. Therefore, the back surface 43c is located between the pair of connecting surfaces 43d in the Y direction. Further, as shown in FIG. 9, a screw hole 44 having a predetermined depth that opens to the bottom surface 43a is formed in the bottom portion 40.

  As shown in FIGS. 3 and 4, the casing 31 configured in this manner is disposed next to (beside) one short side surface 19 c of the battery 19. More specifically, the housing 31 has a facing surface 43b opposed to the short side surface 19c. The housing 31 is disposed beside the short side surface 19c (plane portion 19d) so that the opening 41 is located above the bottom portion 40. That is, the connector 32 is disposed so as to be above the bottom portion 40. Note that the Z direction substantially coincides with the vertical direction of the vehicle 10. The upper side is the upper side of the vehicle.

  The connector 32 is mounted on the circuit board 30 and electrically relays the circuit board 30 and an external device. A part of the connector 32 is accommodated in the casing 31 as shown in FIG. 10, and the remaining part is exposed to the outside from the casing 31. The connector 32 is fitted with a connector (female connector) on the external device side, and the circuit board 30 is electrically connected to the wire harnesses 22 and 23 via the connector 32 and the female connector. For example, in the electronic control device 20, the circuit board 30 and the engine 18 are electrically connected via the connector 32, the female connector, and the wire harness 22. In the electronic control device 20, the circuit board 30 and the relay box 21 are electrically connected via the connector 32, the female connector, and the wire harness 23.

  As shown in FIG. 10, the connector 32 includes a housing 32a formed using an electrically insulating material such as a resin, and a plurality of terminals 32b formed using a conductive material and held by the housing 32a. Have. The plurality of terminals 32b are, for example, arranged in the Y direction with respect to the housing 32a and arranged in multiple stages in the X direction. The number of stages is not particularly limited. The connector 32 is disposed at and around the opening 41 of the housing 31 and closes the opening 41. The housing 32 a and the housing 31 are fitted around the opening 41. Further, a waterproof sealing material (not shown) is disposed between the housing 32a and the peripheral portion of the opening portion 41 in the side wall portion. Thereby, as for the electronic control apparatus 20, the internal space of the housing | casing 31 is waterproofing space. In FIG. 10, the terminals 32b are inserted and mounted on the circuit board 30 (printed board), but a surface mounting structure can also be adopted.

  As shown in FIGS. 3 and 6 to 8, the housing 32 a of the connector 32 has three ports (in other words, fitting ports). The connector 32 is an engine block in which a part of the three ports is provided for connection to the wire harness 22 for driving the engine 18. The connector 32 is a body block whose remaining ports are used for connection to the relay box 21 and the wire harness 23 corresponding to the body ECU. In the arrangement shown in FIG. 2, the wiring harnesses 22, 23 are arranged so that the engine block is closer to the engine 18 and the body block is closer to the relay box 21 and the through hole 16 a in the arrangement shown in FIG. 2. Considering this, the arrangement of each block is determined. Note that the number of ports of the connector 32 is not particularly limited. Hereinafter, an assembly of the circuit board 30, the casing 31, and the connector 32 may be referred to as an electronic structure 100.

  The bracket 33 is a member for attaching the housing 31 in which the circuit board 30 is accommodated to the vehicle 10. In other words, the bracket 33 is a member for attaching the electronic structure 100 to the vehicle. That is, the electronic structure 100 is attached to the vehicle 10 via the bracket 33. In the electronic control device 20, a heat transfer member 60 described later is provided between the electronic structure 100 and the bracket 33.

  The bracket 33 has at least a metal interposition part 50 and a pair of metal leaf spring parts 51. The interposition part 50 is interposed between the flat part 19 d (short side surface 19 c) of the battery 19 and the facing surface 43 b of the housing 31. Since the interposition part 50 connects a pair of leaf | plate spring parts 51, it can also be called a connection part. Moreover, since the leaf | plate spring part 51 is each connected to the Y direction both ends, the interposition part 50 can also be called a base (base). The pair of leaf spring portions 51 corresponds to a pair of folded portions.

  The leaf spring portion 51 extends from the both ends of the interposition portion 50 in the Y direction toward the back surface 43c in the X direction, and is folded back with respect to the interposition portion 50 so as to face the interposition portion 50 in the X direction. The leaf spring portion 51 folded back in this way can be spring-deformed in the X direction. A pair of leaf | plate spring part 51 respectively contacts the slope part 43e of a pair of connection surface 43d by the said folding structure, and provides the reaction force by a spring deformation | transformation to the corresponding slope part 43e. Spring deformation is also referred to as elastic deformation. The slope portion 43e is a portion where the leaf spring portion 51 of the bracket 33 contacts, and the contact position is a position between the back surface 43c and the facing surface 43b in the X direction. Therefore, the inclined surface portion 43 e corresponds to a receiving portion that receives the leaf spring portion 51 in the housing 31.

  The connection method of the leaf | plate spring part 51 and the interposition part 50 is not specifically limited. The interposition part 50 and the leaf | plate spring part 51 may be comprised by another member, and may be connected by welding, for example. In the present embodiment, as shown in FIG. 11, the bracket 33 is configured by processing a flat metal plate into a predetermined shape. That is, the leaf | plate spring part 51 and the interposition part 50 are integrally connected as a part of the same metal plate. In FIG. 11, the boundary (connection part) between the interposition part 50 and the leaf | plate spring part 51 is shown with the broken line. The other boundaries are also indicated by broken lines.

  The leaf spring portions 51 are provided at both ends of the interposition portion 50 in the Y direction, and are bent to the opposite side of the interposition portion 50 from the battery 19. Specifically, the leaf spring portion 51 has an acute angle with the interposition portion 50 so as to contact the slope portion 43e of the housing 31. The leaf spring portion 51 has a bent portion (bent portion) at the connection end with the interposition portion 50, thereby contacting the corresponding slope portion 43 e and applying a reaction force due to spring deformation to the slope portion 43 e. Can be granted. That is, the leaf spring portion 51 is bent with respect to the interposition portion 50 so as to press the slope portion 43e. The pair of slope portions 43 e is pressed by the pair of leaf spring portions 51. For this reason, the housing 31 is fixed by the leaf spring portion 51. In other words, the electronic structure 100 is held by the bracket 33 when the inclined surface portion 43 e is pressed by the leaf spring portion 51. The leaf spring portion 51 can also be referred to as a fixed portion 51.

  In this embodiment, as shown in FIGS. 7 and 11, the leaf spring portion 51 is connected to only a part of the interposition portion 50 in the Z direction. Specifically, in the Z direction, the leaf spring portion 51 is connected only to a portion within a predetermined range from the upper end of the interposition portion 50 from the upper end to the lower end, and is not connected to a partial range upward from the lower end. However, the leaf spring portion 51 may be connected from the upper end to the lower end of the interposition portion 50. The bending angle of the leaf spring part 51 with respect to the interposition part 50 is substantially constant in the Z direction.

  Further, the bracket 33 may be configured such that, for example, a protrusion is provided on a portion of the leaf spring portion 51 facing the slope portion 43e, and the protrusion comes into contact with the slope portion 43e. According to this, the contact area of the leaf | plate spring part 51 and the slope part 43e can be reduced, and it can make it easy to attach the housing | casing 31 containing the circuit board 30 and the connector 32 with respect to the bracket 33. FIG. Furthermore, since the pressing force that presses the slope 43e by the projection can be improved, the thermal resistance between the projection and the slope 43e can be reduced. Note that when the casing 31 and the bracket 33 are fixed, the circuit board 30 is accommodated in the casing 31, and the connector 32 is mounted on the circuit board 30. Therefore, strictly speaking, the housing 31 including the circuit board 30 and the connector 32 and the bracket 33 are fixed. However, in the following, it will be shown that the casing 31 and the bracket 33 are simply fixed. It can also be said that the electronic structure 100 and the bracket 33 are fixed.

  Furthermore, in this embodiment, as shown in FIG. 7 and FIG. 11, the bracket 33 has a support portion 52 and a tray portion 54. The support part 52 and the tray part 54 are connected to other parts constituting the bracket 33. As a constituent material of the support portion 52 and the tray portion 54, at least one of a metal material and a resin material can be employed. The bracket 33 is formed by integrally forming the support portion 52 and the tray portion 54 of a resin material, and fixing a metal member having the interposition portion 50 and the leaf spring portion 51 to the formed member by, for example, press-fitting. You may connect. In addition, the bracket 33 is a metal having the interposition part 50, the leaf spring part 51, and the support part 52 by connecting the support part 52 formed using a metal material to either the interposition part 50 or the leaf spring part 51. The member may be press-fitted and fixed to the tray portion 54 formed of resin. Moreover, the bracket 33 may connect the support part 52 formed using the metal material and the tray part 54 formed using the metal material, for example, by welding. Furthermore, the bracket 33 may connect the support part 52 and the tray part 54 formed using a metal material to the interposition part 50 and the leaf spring part 51 by welding or the like.

  In the present embodiment, as described above, the bracket 33 is configured by processing a flat metal plate into a predetermined shape. That is, not only the interposition part 50 and the leaf | plate spring part 51 but the support part 52 and the tray part 54 are comprised as a part of the same metal plate.

  As shown in FIGS. 3, 5, 7, and 11, the support portion 52 supports the bottom portion 40 of the housing 31. In the present embodiment, a through hole 53 for screwing the housing 31 is formed in the support portion 52. 5 is fixed to the support portion 52 by inserting the screw 34 shown in FIG. 5 through the through hole 53 and screwing into the screw hole 44 formed in the bottom portion 40 of the housing 31.

  Moreover, the support part 52 is connected with the baseplate part 55 which comprises the tray part 54, as shown in FIG.5 and FIG.11. In FIG. 5, the boundary between the support portion 52 and the bottom plate portion 55 is indicated by a broken line. The support portion 52 is an end portion in the X direction of the bottom plate portion 55 and is connected to the vicinity of both ends in the Y direction. The support portion 52 overlaps the vicinity of both ends in the Y direction at the bottom portion 40 of the housing 31 in the projection view from the Z direction.

  The tray portion 54 is a portion of the bracket 33 where the battery 19 is disposed. The tray portion 54 has a bottom plate portion 55 and horizontal plate portions 56 and 57. The bottom plate portion 55 corresponds to a support portion, and the horizontal plate portion 57 corresponds to a reinforcement portion. In the present embodiment, the bottom plate portion 55 and the horizontal plate portions 56 and 57 are also configured as part of the metal plate that constitutes the interposition portion 50, the leaf spring portion 51, and the support portion 52. That is, in the present embodiment, the bottom plate portion 55 and the horizontal plate portions 56 and 57 are configured as a part of the same metal plate. However, the bottom plate portion 55 and the horizontal plate portions 56 and 57 can be separate members. Furthermore, the horizontal plate portion 56 and the horizontal plate portion 57 may be separate members.

  The bottom plate part 55 supports the battery 19. The bottom plate portion 55 has a rectangular shape (rectangular shape) corresponding to the battery 19 in the shape of the XY plane. As described above, the support portion 52 is connected to one end of the bottom plate portion 55 in the X direction, that is, one of the end portions corresponding to the short side surface 19 c of the battery 19. Further, the bottom plate portion 55 is connected to the lower end of the interposition portion 50 between the two support portions 52 at the end where the support portion 52 is connected. The support portion 52 is located on the same plane as the bottom plate portion 55 and extends from the bottom plate portion 55 in the X direction. That is, the support portion 52 is not bent with respect to the bottom plate portion 55. On the other hand, the interposition part 50 is bent with respect to the bottom plate part 55 so that the angle formed with the bottom plate part 55 is approximately 90 degrees.

  The bottom plate portion 55 has a fixing hole 58 formed so as to penetrate near the center. With the fixing hole 58, the bracket 33, that is, the electronic control unit 20, is screwed to the body of the vehicle 10 or an attachment portion fixed to the body. Note that the fixed portion of the electronic control device 20 to the vehicle 10 is not limited to the bottom plate portion 55. The electronic control unit 20 can be fixed at other portions of the bracket 33. Further, the electronic control device 20 can be fixed to an attachment portion such as a radiator support via the clamp member 24.

  The horizontal plate portion 56 is connected to the end portion of the bottom plate portion 55 opposite to the end portion to which the interposition portion 50 and the support portion 52 are connected. The horizontal plate portion 56 has a rectangular shape (rectangular shape) on the YZ plane, and has the same length as the bottom plate portion 55 in the Y direction. The horizontal plate portion 56 is bent with respect to the bottom plate portion 55 so that the angle formed with the bottom plate portion 55 is approximately 90 degrees. As shown in FIG. 7, the interposition part 50 and the horizontal plate part 56 face each other.

  The pair of horizontal plate portions 57 is connected to the end portion in the Y direction of the bottom plate portion 55, that is, the end portion corresponding to the long side surface 19 b of the battery 19. The pair of horizontal plate portions 57 are bent with respect to the bottom plate portion 55 so that the angle formed with the bottom plate portion 55 is approximately 90 degrees. The pair of horizontal plate portions 57 face each other. One end of the horizontal plate portion 57 in the X direction is connected to an end portion of the horizontal plate portion 56 in the Y direction, for example, by welding.

  Moreover, as shown in FIG. 7, the other end of the X direction in the horizontal plate part 57 is connected with the edge part of the Y direction in the interposition part 50, for example by welding. That is, the lateral plate portion 57 extends to the opposite side of the leaf spring portion 51 in the X direction with respect to the interposition portion 50. The facing interval between the pair of horizontal plate portions 57 is held by the interposition portion 50 and the horizontal plate portion 56. Since the bracket 33 surrounds the periphery of the bottom plate portion 55 by the interposition portion 50 and the horizontal plate portions 56 and 57, the positioning of the battery 19 is easy and the displacement of the battery 19 can also be suppressed.

  However, the lateral plate portion 57 can also be connected to the leaf spring portion 51 by welding, for example. In this case, the thickness of the electronic control device 20 can be made thinner in the X direction by the thickness of the horizontal plate portion 57 than in the configuration shown in FIG.

  The height in the Z direction of the horizontal plate portion 57 is substantially the same as that of the horizontal plate portion 56 in a predetermined range in the X direction from the connecting end with the horizontal plate portion 56, specifically, in a range from the vicinity of the center in the X direction. It is height. On the other hand, at the end on the interposition part 50 side, the height of the horizontal plate part 57 is substantially the same as that of the interposition part 50. The height of the horizontal plate portion 57 gradually increases from the vicinity of the center in the X direction toward the end portion on the interposed portion 50 side. Thus, the height of the horizontal plate portion 57 is higher on the side closer to the circuit board 30 in the X direction. Further, the horizontal plate portion 57 is formed with a latching portion 59 around which the J-shaped lower end portion of the hook member 25 is latched near the center in the X direction.

  In the electronic control unit 20, the electronic structure 100 is assembled to the bracket 33 via the heat transfer member 60 as described above. In other words, the electronic structure 100 and the bracket 33 are fixed via the heat transfer member 60. More specifically, in the electronic control unit 20, as shown in FIGS. 6 and 12, a heat transfer member 60 is provided between the slope portion 43 e of the housing 31 and the leaf spring portion 51 of the bracket 33. In other words, the electronic control device 20 has a mounting structure in which the heat transfer member 60 is provided between the slope portion 43e of the electronic structure 100 and the leaf spring portion 51 of the bracket 33. FIG. 12 is an enlarged view of a part of a contact portion between the slope portion 43e of the electronic structure 100 and the leaf spring portion 51 of the bracket 33. As shown in FIG.

  Since the slope portion 43e and the leaf spring portion 51 are both formed of metal, depending on the processing accuracy of the surface, they are likely to be point contact as shown in FIG. 12 instead of surface contact. That is, only a part of the slope portion 43e and the leaf spring portion 51 is likely to be in direct contact. For this reason, between the slope part 43e and the leaf | plate spring part 51, when there is no heat-transfer member 60, thermal resistance will become large. Therefore, in the electronic control device 20, a heat transfer member 60 is provided between the slope portion 43 e and the leaf spring portion 51 in order to reduce the thermal resistance between the slope portion 43 e and the leaf spring portion 51.

  The heat transfer member 60 can employ a heat radiating sheet, a heat radiating gel, a heat radiating grease, or the like. Further, the heat transfer member 60 is preferably one that can follow the irregularities in the slope portion 43e and the leaf spring portion 51. That is, it is preferable that the heat transfer member 60 be capable of filling the gap between the slope portion 43e and the leaf spring portion 51 in a state where it is disposed between the slope portion 43e and the leaf spring portion 51. For example, the electronic control device 20 forms the heat transfer member 60 on the slope portion 43e in advance, and attaches the electronic structure 100 on which the heat transfer member 60 is formed to the bracket 33, so that the slope portion 43e and the leaf spring portion are assembled. The heat transfer member 60 is disposed between the heat transfer member 51 and the heat transfer member 51.

  Since the electronic control device 20 is provided with the heat transfer member 60, it can reduce the thermal resistance between the slope portion 43 e and the leaf spring portion 51 as compared with the case where the heat transfer member 60 is not provided. That is, the electronic control unit 20 can reduce the thermal resistance between the electronic structure 100 and the bracket as compared with the case where the heat transfer member 60 is not provided. In addition, it can be said that the electronic control device 20 can increase the contact surface property between the electronic structure 100 and the bracket as compared with the case where the heat transfer member 60 is not provided. Therefore, the electronic control unit 20 can transfer the heat generated from the heating element 30 a, that is, the heat of the electronic structure 100 to the leaf spring portion 51 via the slope portion 43 e and the heat transfer member 60. For this reason, the electronic control unit 20 can radiate the heat of the electronic structure 100 from the leaf spring portion 51.

  In this embodiment, the example which the leaf | plate spring part 51 opposes a part of slope part 43e is employ | adopted. However, the present invention is not limited to this. As described above, the leaf spring portion 51 functions as a heat dissipation path. Therefore, it is preferable for the electronic control device 20 to make the leaf spring portion 51 large enough to oppose the entire area of the slope portion 43e because the thermal resistance can be further reduced.

  In addition, as described above, for example, when a protrusion is provided at a portion of the leaf spring portion 51 facing the slope portion 43e, the contact area between the leaf spring portion 51 and the slope portion 43e is reduced, and the thermal resistance is increased. Conceivable. However, since the electronic control device 20 is provided with the heat transfer member 60 between the leaf spring portion 51 and the slope portion 43e, even if the leaf spring portion 51 is provided with a projection, the electronic resistance device 20 has a thermal resistance. Can be suppressed. However, the contact portion between the protruding portion and the slope portion 43e has a large pressing force, so that the thermal resistance can be reduced.

  Next, a procedure for assembling the electronic control device 20 to the vehicle 10 will be described with reference to FIG.

  First, the main wire including the relay box 21 and the wire harness 23 is arranged in the engine compartment 17.

  Next, the engine module is installed in the engine compartment 17 from the lower side of the vehicle 10. The engine module is constructed by assembling the engine 18 with auxiliary equipment such as a starter, alternator and compressor, a drive system such as a transmission and a drive shaft, a braking system such as a shock absorber and a brake rotor, and an intake and exhaust system excluding an air cleaner. is there. Further, in addition to these, the engine module may be assembled with an engine mounting component, an under cover, and a wire harness 22.

  Next, the remaining parts such as the remaining wire harness excluding the main wire and the wire harness 22, the air cleaner, the electronic control unit 20, and the battery 19 are assembled. That is, the battery 19 and the electronic control unit 20 are assembled between the engine 18 and the relay box 21 with the engine 18 and the relay box 21 already arranged.

  At that time, the housing 31 is disposed beside the short side surface 19 c of the battery 19 so that the connector 32 is positioned above the bottom 40 of the housing 31. Then, the electronic control device 20 (bracket 33) is assembled to the body of the vehicle 10 or an attachment portion fixed to the body, and then the battery 19 is disposed on the bottom plate portion 55 of the bracket 33. Furthermore, the external device side female connector is fitted to the connector 32. Thereby, the wire harnesses 22 and 23 are connected to the circuit board 30. The female connector can be fitted before the battery 19 is arranged.

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

  In the present embodiment, the connecting surface 43d of the housing 31 is not a surface along the X direction, but the distance between the pair of connecting surfaces 43d in the Y direction becomes narrower as at least a part of the connecting surface 43d approaches the back surface 43c. It is set as the slope part 43e which inclines so that it may become. That is, in the present embodiment, the casing 31 is not substantially rectangular when viewed from the Z direction, but the distance between the pair of connection surfaces 43d in the Y direction increases as the back surface 43c approaches at least a part of the connection surface 43d. It is set as the slope part 43e which inclines so that it may become narrow.

  At the same time, in the present embodiment, a metal leaf spring portion 51 is provided on the bracket 33 so as to come into contact with the slope portions 43e of the pair of connecting surfaces 43d and to apply a reaction force due to spring deformation to the slope portions 43e. . When a reaction force due to spring deformation acts on the slope portion 43e, the slope portion 43e is pushed to the opposite slope portion 43e side in the Y direction and to the intervention portion 50 side in the X direction. That is, both ends of the housing 31 in the Y direction are pushed toward the interposition part 50 in the X direction. And the housing | casing 31 is clamped in the X direction by the leaf | plate spring part 51 and the interposition part 50. FIG. In this way, the housing 31 can be fixed to the bracket 33. Therefore, compared to a conventional structure, for example, a structure in which the bracket is screwed to the housing in the X direction, or a structure in which the connection surface is not a slope but a surface along the thickness direction, and the opposite surface and the back surface are sandwiched and fixed by the bracket. The electronic control unit 20 can be made thinner in the direction. Moreover, since it fixes by holding, fixing structure can be simplified.

  Since the electronic control unit 20 can be thinned as described above, the electronic control unit 20 can be arranged in the narrow space next to the flat portion 19 d of the battery 19, that is, the side of the battery 19 in the engine compartment 17 where the mounting space is limited. Thereby, compared with the structure which arrange | positions an electronic controller under a battery, the position of the bonnet 12 located above the engine compartment 17 can be made low. Therefore, the position of the center of gravity of the vehicle 10 can be lowered. Moreover, since the freedom degree of the shape of the bonnet 12 improves, it becomes easy to change the shape of the bonnet 12, and the design property can also be improved. In this embodiment, since the electronic control unit 20 is disposed in the engine compartment 17, the visibility (parting) of the driver can be further improved.

  Further, the opening 41 of the housing 31, in other words, the connector 32 is arranged so as to be above the bottom 40. Therefore, it is not necessary to route the wire harness from the lower side to the upper side as in the configuration in which the electronic control device is arranged under the battery. Therefore, the length of the wire harnesses 22 and 23 can be shortened.

  As described above, according to the present embodiment, in the electronic control device 20 arranged next to the battery 19, the position of the bonnet 12 on the engine compartment 17 is increased while suppressing the wire harnesses 22 and 23 from becoming longer. Can be suppressed.

  Further, the heat of the circuit board 30 is transmitted to the interposition part 50 and the leaf spring part 51 through the metal casing 31. Therefore, the heat of the circuit board 30 can be efficiently radiated by the metallic interposition part 50 and the leaf spring part 51. Further, since the lower part of the engine compartment 17, the transmission and the exhaust system parts are arranged, and the wind is hard to flow with an under cover for improving running stability, heat is easily accumulated and the temperature is higher than the upper part. Therefore, the heat of the circuit board 30 can be radiated more efficiently than the configuration in which the electronic control device is disposed under the battery.

  Further, in the present embodiment, since the heat transfer member 60 is provided between the slope portion 43e and the leaf spring portion 51, the thermal resistance between the slope portion 43e and the leaf spring portion 51 is reduced as described above. it can. Therefore, the electronic control unit 20 can improve the heat dissipation of the electronic structure 100 while thinning the electronic control unit 20 in the X direction. In addition, the electronic control unit 20 can transfer heat of the electronic structure 100 to the leaf spring portion 51 via the slope portion 43 e and the heat transfer member 60. For this reason, it is preferable to arrange the heating element 30a near (in the vicinity of) the slope portion 43e in the circuit board 30, such as the region A1 indicated by the two-dot chain line in FIG. As a result, the electronic control unit 20 can easily transfer the heat generated from the heating element 30a from the inclined surface portion 43e to the leaf spring portion 51 via the heat transfer member 60.

  Furthermore, in this embodiment, the shape of the housing | casing 31 is made into trapezoid shape seeing from a Z direction. That is, the substantially entire surface of the connecting surface 43d is a slope portion 43e. According to such a configuration, it is easy to fix the housing 31 and the bracket 33. For example, in a state where the pair of leaf springs 51 is slightly opened by applying an external force, the housing 31 is moved to a predetermined position in the Z direction, and then the application of the external force is canceled, so that the housing 31 and the bracket 33 Can be fixed. Further, the connecting surface 43d can form the housing 31 more easily than a configuration in which the connection surface 43d has a slope portion 43e only in a part and the remaining portion is along the X direction (that is, does not have the slope portion 43e). If the angle between the leaf spring portion 51 and the interposition portion 50 is reduced within a predetermined range from the upper end toward the lower end, the casing 31 can be moved to a predetermined position without applying external force. Can be moved. In addition, as described above, even when a protrusion such as a wedge shape or a hemisphere is provided on the contact surface side of the leaf spring portion 51, the casing 31 is fixed to the predetermined portion without opening the leaf spring portion 51 by applying an external force. It can be moved to a position.

  Furthermore, in the present embodiment, the bracket 33 has a support portion 52, and the housing 31 is supported by the support portion 52. Therefore, it is possible to prevent the casing 31 from being displaced downward with the application of vehicle vibration. That is, the housing 31 can be fixed more stably. In particular, in the present embodiment, a through hole 53 is formed in the support portion 52, and the housing 31 is screwed to the support portion 52 through the through hole 53. As described above, since the screw is fastened under the bottom portion 40 of the housing 31, it is difficult to remove the housing 31 from the bracket 33, that is, the vehicle 10. Therefore, it is possible to prevent the housing 31 including the circuit board 30 from being taken out (for example, stolen) from the engine compartment 17. In particular, in the present embodiment, since the support portion 52 is formed using a metal material, the heat of the circuit board 30 is also transmitted to the support portion 52 through the bottom portion 40 of the metal casing 31. Therefore, the heat of the circuit board 30 can be radiated efficiently.

  Furthermore, in the present embodiment, the bracket 33 has a horizontal plate portion 57. The lateral plate portion 57 is connected to the interposed portion 50 or the leaf spring portion 51 and extends in a direction opposite to the direction in which the leaf spring portion 51 extends from the interposed portion 50. Therefore, it is possible to suppress the leaf spring portion 51 and the interposition portion 50 from falling due to the weight of the circuit board 30 and the casing 31. That is, the housing 31 including the circuit board 30 can be stably held by the side of the battery 19. Particularly in this embodiment, since the horizontal plate portion 57 is formed using a metal material, the heat of the circuit board 30 is also transmitted to the horizontal plate portion 57. Thus, the thermal mass of the entire bracket 33 is increased, and the heat of the circuit board 30 can be radiated more effectively. The thermal mass indicates a volume capable of absorbing heat.

  Further, in the present embodiment, the bracket 33 has the bottom plate portion 55 and can support the battery 19. In particular, in the present embodiment, since the bottom plate portion 55 is formed using a metal material, the heat of the circuit board 30 is also transmitted to the bottom plate portion 55. Thus, the thermal mass of the entire bracket 33 is increased, and the heat of the circuit board 30 can be radiated more effectively. In other words, in the present embodiment, the horizontal plate portion 57 and the bottom plate portion 55 can be used as a heat dissipation path for the heat propagated to the bracket 33.

  In the present embodiment, the tray portion 54 is configured including the bottom plate portion 55 and the horizontal plate portion 57, and the battery 19 can be supported by the bracket 33 in addition to the housing 31. In particular, in this embodiment, the interposition part 50, the leaf spring part 51, the support part 52, and the components (the bottom plate part 55, the lateral plate parts 56, 57) of the tray part 54 that supports the battery 19 are the same metal plate. Is configured as part of Therefore, the configuration of the bracket 33 including the tray portion 54 can be simplified. Further, the heat of the circuit board 30 can be radiated to the entire tray portion 54. In other words, in the present embodiment, the tray portion 54 can be used as a heat dissipation path for the heat propagated to the bracket 33.

  13 and 14 show thermal analysis results (simulation results). In FIG. 14, the battery 19 is omitted for convenience. As shown in FIGS. 13 and 14, most of the heat generated by the circuit board 30 is absorbed by the interposition part 50 and the leaf spring part 51. Further, a part of the signal is transmitted to the bottom plate portion 55 and the horizontal plate portion 57 constituting the tray portion 54 through the interposition portion 50 and the leaf spring portion 51. By including the tray portion 54 in the bracket 33, it can be seen that there is room as a thermal mass. That is, even if heat is transferred to the tray portion 54, the temperature of the battery 19 does not change greatly.

  Furthermore, in this embodiment, the housing | casing 31 of the electronic control apparatus 20 is arrange | positioned beside the battery 19 as a box-shaped member. In the engine compartment 17, the battery 19 is disposed not in the vicinity of the engine 18 but in a place where the temperature from the front grill 15 is low. Therefore, the temperature rise of the circuit board 30 can be effectively suppressed by arranging the circuit board 30 beside the battery 19.

  By the way, it is also possible to arrange | position the housing | casing 31 next to the long side surface 19b among the side surfaces of the battery 19. FIG. However, if arranged next to the long side surface 19b, the wire harnesses 22 and 23 must be routed so as to avoid the hook member 25. For this reason, the length of the wire harnesses 22 and 23 becomes long. In addition, a space for wiring is required. On the other hand, in this embodiment, since the housing | casing 31 is arrange | positioned next to the short side surface 19c of the battery 19, the length of the wire harnesses 22 and 23 can also be shortened by this.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. Below, the modification of this invention is demonstrated. The above-described embodiments and modification examples can be implemented independently, but can be implemented in combination as appropriate. The present invention is not limited to the combinations shown in the embodiments, and can be implemented by various combinations.

(Modification 1)
In this modification, the description of the parts common to the electronic control device 20 shown in the above embodiment is omitted.

  As shown in FIGS. 15 and 16, the electronic control device 20 shown in this modification is different from the leaf spring portion 51 of the above embodiment in the leaf spring portion 51 a. Further, the leaf spring portion 51a is different from the leaf spring portion 51 in that an auxiliary fixing portion 51a1 is provided. In FIG. 16, a part of the surface of the leaf spring part 51 a that faces the inclined surface 43 e and a part of the surface of the interposition part 50 that faces the housing 31 are illustrated.

  As shown in FIG. 16, the leaf spring portion 51a is provided with an auxiliary fixing portion 51a1 as an elastic portion on the side facing the slope portion 43e. The auxiliary fixing part 51a1 can be formed by, for example, making a U-shaped cut into a part of the leaf spring part 51a and bending it so as to protrude toward the slope part 43e. That is, the leaf spring portion 51a can be regarded as an auxiliary fixing portion 51a1 formed on the leaf spring portion 51. Further, it can be said that the leaf spring portion 51a includes an auxiliary fixing portion 51a1 that protrudes toward the slope portion 43e and applies a reaction force due to elastic deformation to the slope portion 43e.

  Therefore, the leaf | plate spring part 51a presses the slope part 43e by the auxiliary | assistant fixing | fixed part 51a1. Accordingly, the leaf spring portion 51 a can improve the pressing force for pressing the inclined surface portion 43 e as compared with the leaf spring portion 51. That is, the pressing force that presses the slope portion 43e by the auxiliary fixing portion 51a1 is larger than the pressing force that presses the slope portion 43e by the leaf spring portion 51.

  For this reason, the electronic control apparatus 20 of this modification can fix the electronic structure 100 firmly by the leaf | plate spring part 51a rather than the said embodiment. Furthermore, since the electronic control device 20 of the present modification can improve the pressing force that presses the inclined surface portion 43e by the auxiliary fixing portion 51a1, the auxiliary fixing portion is more than the thermal resistance between the leaf spring portion 51 and the inclined surface portion 43e. The thermal resistance between 51a1 and the slope part 43e can be made small.

  Moreover, the electronic control apparatus 20 of this modification may provide the heat-transfer member 60 in the whole area of the opposing area | region of the leaf | plate spring part 51a and the slope part 43e, or the leaf | plate spring part 51a and the slope part 43e You may provide in the whole periphery of the auxiliary | assistant fixing | fixed part 51a1 among opposing areas. As described above, the electronic control device 20 of the present modification has a relatively small thermal resistance between the auxiliary fixing portion 51a1 and the inclined surface portion 43e, so that heat dissipation is ensured even if it is provided around the auxiliary fixing portion 51a1. it can.

(Modification 2)
In this modification, the description of the parts common to the electronic control device 20 shown in the above embodiment is omitted.

  As shown in FIG. 17, the electronic control device 20 according to the present modification further includes a heat insulating member 70 for suppressing heat transfer between the circuit board 30 and the battery 19 in addition to the configuration of the above embodiment. Yes. In FIG. 17, for the sake of convenience, the battery 19 is simplified, and the illustration of the clamp member 24, the hook member 25, and the latching portion 59 is omitted. Further, the leaf spring portion 51 is connected from the upper end to the lower end of the interposition portion 50.

  As the heat insulating member 70, a well-known member applied to the vehicle 10, for example, a hollow sheet made of polypropylene can be employed. Of the portions of the battery 19 and the bracket 33 that face each other, the heat insulating member 70 is disposed at least between the flat surface portion 19 d and the interposition portion 50. The heat insulating member 70 can be arranged on five surfaces excluding the upper surface 19a with respect to the battery 19 having a substantially rectangular parallelepiped shape. In the present modification, the heat insulating member 70 is disposed on the side surfaces 19 b and 19 c and the five surfaces of the bottom surface of the battery 19. Specifically, heat insulation is provided between the interposition portion 50 and the short side surface 19c, between the pair of horizontal plate portions 57 and the long side surface 19b, between the horizontal plate portion 56 and the short side surface 19c, and between the bottom plate portion 55 and the bottom surface. A member 70 is disposed.

  The heat insulating member 70 may be disposed so as to cover almost the entire surface with respect to the surface of the battery 19 to be disposed. Further, an opening may be provided in a part of the heat insulating member 70 to enable heat dissipation from the battery 19 or to allow wind from the front grill 15 to be applied.

  As described above, with the configuration including the heat insulating member 70, the heat of the circuit board 30 is transmitted to the battery 19, and the temperature of the battery 19 can be suppressed from exceeding a predetermined management temperature.

  In addition, when at least one part of the tray part 54 is comprised with resin as mentioned above, the heat insulation member 70 becomes unnecessary in the part comprised with resin. For example, when the bottom plate portion 55 is made of resin, the heat insulating member 70 on the bottom surface side is not necessary.

(Modification 3)
For this modification, reference can be made to the preceding embodiment and the preceding modification. For this reason, the description about the part which is common in the electronic control apparatus 20 etc. which were shown in the preceding embodiment and the previous modification is abbreviate | omitted.

  First, based on FIGS. 18-21, the housing | casing 31b containing the circuit board 30 and the connector 32 is demonstrated. 20 and 21, the terminal 32b of the connector 32 is omitted for convenience.

  The circuit board 30 is mounted with a heating element 30a as in the above embodiment. However, in the modified examples 3 and 4, illustration is omitted for convenience. The heating element 30a is preferably disposed in the vicinity of the receiving portion 84. As a result, the electronic control unit 20 can also efficiently dissipate the heat generated from the heating element 30 a to the bracket 33 side via the receiving portion 84 and the leaf spring portion 51. It can be said that the heat generated from the heating element 30 a is the heat of the circuit board 30.

  The casing 31b of the present modification is disposed on the opposite side of the upper case 82 with respect to the intermediate case 81, the upper case 82 disposed on one surface side in the X direction with respect to the intermediate case 81. And a lower case 83. That is, the housing 31b is configured by a plurality of members. Therefore, it can be said that the housing 31b is configured to be divided in the thickness direction. The intermediate case 81, the upper case 82, and the lower case 83 correspond to a casing constituent member. Further, the housing 31b has a pair of receiving portions 84 that are portions where the leaf spring portion 51 contacts.

  The intermediate case 81 is a resin molded body. In this modification, the intermediate case 81 is formed using a thermoplastic resin. As the thermoplastic resin, one having excellent heat resistance, such as polybutylene terephthalate (PBT) can be employed.

  The intermediate case 81 has an annular shape and has a through hole 81a along the X direction. For this reason, intermediate case 81 can also be called a frame. Specifically, as shown in FIGS. 19 and 20, the intermediate case 81 has a substantially rectangular ring shape. As shown in FIG. 18, the housing 32a of the connector 32 is integrated with the intermediate case 81. In other words, the housing 32 a is integrally formed as a part of the intermediate case 81. However, the shape of the intermediate case 81 is not limited to the above example. For example, a substantially C-shaped (in other words, approximately U-shaped) intermediate case 81 may be employed, and a configuration in which the housing 32a is disposed in the C-shaped opening (gap portion) of the intermediate case 81 may be employed. . In this case, the intermediate case 81 and the housing 32a can be sealed by welding.

  As shown in FIGS. 19 and 20, the intermediate case 81 has a frame portion 85 having a substantially rectangular ring shape, and pedestal portions 86 provided at four corners on the inner peripheral side of the frame portion 85. . In FIG. 19, the inner peripheral end 81b of the intermediate case 81 is indicated by a broken line, and in FIG. 20, the pedestal portion 86 is indicated by a broken line. The thickness of the frame portion 85 in the X direction is substantially constant over the entire circumference. The pedestal portion 86 is substantially flush with the frame portion 85 on the upper case 82 side, and is provided at a position lower than the frame portion 85 on the lower case 83 side. That is, the thickness of the pedestal portion 86 is made thinner than the thickness of the frame portion 85. Thereby, a predetermined gap is provided between the pedestal portion 86 and the lower case 83.

  As shown in FIGS. 18 and 20, the circuit board 30 is disposed on the surface of the pedestal portion 86 on the lower case 83 side, and is fixed to the pedestal portion 86 (intermediate case 81). The method for fixing the circuit board 30 is not particularly limited. For example, adhesion or screw fastening can be employed. In a state where the circuit board 30 is fixed to the intermediate case 81, a predetermined gap is provided between the circuit board 30 and the lower case 83.

  The upper case 82 is formed using a metal material. In this modification, the upper case 82 has a flat plate shape. The upper case 82 is fixed to the frame portion 85 and the pedestal portion 86 so as to close one open end of the through hole 81a. The outer contour of the upper case 82 substantially coincides with the outer peripheral end of the intermediate case 81 in the projection view from the X direction. Therefore, the upper case 82 constitutes the side wall portion 42 on the back surface 43c side. That is, the surface of the upper case 82 opposite to the intermediate case 81 forms the back surface 43c.

  The fixing method of the upper case 82 is not particularly limited. In this modification, the upper case 82 is welded to the intermediate case 81. When welding is used, a sealing material between the upper case 82 and the intermediate case 81 can be made unnecessary. An anchor effect can be expected when the upper case 82 is a surface in which at least the welded surface of the intermediate case 81 is roughened (etched) by etching or the like. In addition, the leak path becomes longer and the waterproofness can be improved.

  Similarly to the upper case 82, the lower case 83 is also formed using a metal material. As shown in FIGS. 19 and 21, the lower case 83 includes a main body portion 87 that closes one open end of the through hole 81 a and an extending portion 88 that extends from the main body portion 87.

  The main body 87 has a flat plate shape. The main body 87 is fixed to the frame 85 so as to close the opening end of the through hole 81a opposite to the upper case 82. The outer contour of the main body 87 substantially coincides with the outer peripheral end of the intermediate case 81 in the projection view from the X direction. The fixing method of the main body 87 (lower case 83) is not particularly limited. The main body 87 is also welded to the intermediate case 81. Therefore, as the lower case 83, it is preferable to employ a roughened at least welded portion of the surface on the intermediate case 81 side.

  The extended portion 88 is a portion that extends outward from the main body portion 87 along the Y direction from both ends of the main body portion 87 in the Y direction. The extending portions 88 are provided on both sides of the main body portion 87 in the Y direction. The extending portion 88 is composed of a separate member from the main body portion 87, and may be connected to the main body portion 87 by welding, for example. In this modification, the main body portion 87 and the extending portion 88 are integrally connected as a part of a metal plate having a predetermined thickness, and the extending portion 88 has the same thickness as the main body portion 87. It is located in the same plane as the main body 87. Since the receiving portion 84 is provided on the extending portion 88, the length of the extending portion 88 in the Z direction is determined according to the length of the receiving portion 84 in the Z direction.

  The main body portion 87 and the extending portion 88, that is, the lower case 83 constitute the side wall portion 42 on the facing surface 43 b side. Therefore, the surface opposite to the intermediate case 81 in the lower case 83 forms the facing surface 43b. The intermediate case 81, the upper case 82, and the lower case 83 constitute the bottom wall portion 40.

  A pair of receiving part 84 is a part which the leaf | plate spring part 51 of the bracket 33 contacts among the housing | casing 31b. In other words, the receiving part 84 is a part which receives the leaf | plate spring part 51 among the housing | casing 31b. The receiving portion 84 is provided at the portion of the extending portion 88 in the surface opposite to the facing surface 43 b in the lower case 83. For this reason, the receiving portion 84 can be said to be a part of the lower case 83. Since the receiving part 84 protrudes from the extending part 88 in the X direction, it is also referred to as a convex part. The protruding tip of the receiving portion 84 is a position between the facing surface 43b and the back surface 43c in the X direction. The receiving portion 84 is provided in each of the pair of extending portions 88 located on both sides of the main body portion 87. For this reason, the back surface 43c is located between the pair of receiving portions 84 in the Y direction.

  Further, the receiving portion 84 is a heat transfer member that transfers heat generated from the heating element 30 a to the bracket 33. That is, the receiving part 84 is comprised including metals, such as copper and aluminum, in order to improve thermal conductivity. The receiving portion 84 can also be said to be made of metal. The receiving part 84 has the same function as the heat transfer member 60 of the above embodiment. Therefore, it can be said that the receiving portion 84 is an alternative member for the heat transfer member 60. In the electronic control device of Modification 3, the receiving portion 84 contacts the leaf spring portion 51 of the bracket 33, so that the heat of the electronic structure 100 can be radiated from the leaf spring portion 51.

  In this modification, the receiving part 84 is comprised by the extension part 88 and another member, and is being fixed to the extension part 88 by welding, for example. The receiving portion 84 has a substantially prismatic shape, and has a predetermined length in the Z direction. In the present modification, the length is slightly shorter than the main body portion 87 in the Z direction. It is also possible to adopt a configuration in which a deformed metal plate is used and the receiving portion 84 and the extending portion 88 are integrally connected as a part of the same metal plate.

  Next, the bracket 33 and a structure for fixing the housing 31b to the bracket 33 will be described with reference to FIGS. 23 and 25, the tray portion 54 of the bracket 33 is omitted for convenience. In FIG. 23, the terminal 32b of the connector 32 is omitted for convenience.

  The bracket 33 has the interposition part 50 and a pair of leaf | plate spring part 51 similarly to the said embodiment. Also in the present embodiment, the leaf spring portion 51 corresponds to the folded portion. The leaf spring portion 51 extends from the both ends of the interposition portion 50 in the Y direction toward the back surface 43c in the X direction, and is folded back with respect to the interposition portion 50 so as to face the interposition portion 50 in the X direction. Specifically, as shown in FIGS. 23 and 24, the leaf spring portion 51 is folded back so as to be substantially parallel to the interposition portion 50. For this reason, the interposition part 50 and the leaf | plate spring part 51 have comprised the substantially U-shape (in other words, substantially C-shape). The leaf spring portion 51 folded back in this way can be spring-deformed in the X direction. In addition, although the leaf | plate spring part 51 has a shape different from the said embodiment, the same code | symbol is provided for convenience.

  Further, in the state where the housing 31 b is not disposed, the facing distance between the leaf spring portion 51 and the interposition portion 50 is shorter than the total length of the plate thickness of the lower case 83 and the height of the receiving portion 84. For this reason, the leaf spring portion 51 is in a state of being in contact with the protruding tip of the receiving portion 84, that is, in a state where the receiving portion 84 is sandwiched between the leaf spring portion 51 and the interposition portion 50. As shown, the reaction force by spring deformation (elastic deformation) is applied to the corresponding receiving portion 84. The leaf spring portion 51 is provided to have a predetermined length in the Z direction corresponding to the receiving portion 84. Further, in order to improve assemblability, a protrusion such as a wedge shape or a hemisphere may be provided on the contact surface side of the leaf spring portion 51 as described above. A protrusion such as a wedge shape or a hemispherical shape may be provided on the protruding tip surface of the receiving portion 84. Furthermore, a part of the receiving portion 84 may be tapered so that the protruding height gradually changes so that it can be easily assembled to the bracket 33.

  As shown in FIGS. 22, 23, and 25, the bracket 33 also has a support portion 52. The support portion 52 is provided so as to overlap with the receiving portion 84 in the projection view from the Z direction. Then, a screw (not shown) is inserted through a through hole 53 (not shown) provided in the support portion 52 and screwed into a screw hole (not shown) provided in the receiving portion 84 to support the housing 31b. It is fixed to the part 52.

  According to the configuration described above, it is possible to achieve the same effect as the electronic control device 20 shown in the embodiment. Specifically, the protruding tip with which the leaf spring portion 51 contacts in the receiving portion 84 is a position between the facing surface 43b and the back surface 43c in the X direction. In addition, a pair of leaf springs 51 are provided so as to be elastically deformable in the X direction, and the pair of leaf springs 51 causes the pair of receiving portions 84 located near both ends in the Y direction of the housing 31b to be elastically deformed. A reaction force can be applied. Therefore, the lower case 83 to which the receiving portion 84 is fixed, that is, the casing 31b can be pressed against the interposition portion 50 side in the X direction and fixed to the bracket 33 by the reaction force described above. Therefore, the electronic control unit 20 can be made thinner in the X direction compared to a structure in which the bracket is screwed to the housing in the X direction and a structure in which the opposite surface and the back surface are sandwiched and fixed by the bracket.

  Thereby, the electronic control unit 20 can be arranged in the narrow space beside the battery 19 in the engine compartment 17 as in the above embodiment. That is, the position of the bonnet 12 can be lowered. Moreover, since the connector 32 is disposed so as to be above the bottom wall portion 40, the lengths of the wire harnesses 22 and 23 can be shortened. In addition, since the leaf | plate spring part 51 contacts the metal receiving part 84, the heat | fever of the circuit board 30 can also be efficiently radiated | emitted to the bracket 33 side via the receiving part 84 and the leaf | plate spring part 51. FIG.

  In this modification, the casing 31b has a three-part structure in the X direction, the intermediate case 81 is a resin molded body, and the upper case 82 and the lower case 83 are welded to the intermediate case 81, respectively. . Therefore, it is possible to eliminate the need for a sealing material between the intermediate case 81 and the upper case 82 and between the intermediate case 81 and the lower case 83. Thereby, the housing | casing 31b and by extension, the electronic control apparatus 20 can be made thin in the X direction. In addition, the structure of the metal casing component, that is, the upper case 82 and the lower case 83 in the casing 31b can be simplified.

  Note that the housing 31b is not limited to a three-part structure. For example, the present invention can be applied to the case 31b having a two-part structure. In this case, the receiving portion 84 is provided on one of the two casing constituent members. Further, the position where the receiving portion 84 is provided is not limited to the surface opposite to the facing surface 43 b in the lower case 83. The pair of receiving portions 84 may be provided at a position between the opposing surface 43b and the back surface 43c in the X direction, with the back surface 43c positioned in the Y direction. For example, a stepped portion can be provided on the connecting surface 43d of the housing 31b, and the stepped portion can be used as the receiving portion 84. In this modification, since the receiving portion 84 is disposed away from the intermediate case 81 to which the circuit board 30 is fixed, the stress acting on the receiving portion 84 due to the holding is difficult to be transmitted to the circuit board 30. Moreover, the heat insulation member 70 can also be combined with the structure of this modification.

(Modification 4)
For this modification, reference can be made to the preceding embodiment and the preceding modification. For this reason, the description about the part which is common in the electronic control unit 20 shown in the preceding embodiment or the preceding modification is omitted.

  In the third modification, an example in which the pair of leaf spring portions 51 applies a reaction force due to elastic deformation to the corresponding receiving portion 84 has been described. On the other hand, in this modified example, the pair of receiving portions 89 applies a reaction force due to elastic deformation to the corresponding folded portion 90. FIG. 26 corresponds to FIG.

  As shown in FIG. 26, in a state where the receiving portion 89 is sandwiched between the interposition portion 50 and the folded portion 90, the pair of receiving portions 89 impart reaction force due to elastic deformation to the intervening portion 50 and the folded portion 90. It is provided to do. The other configuration is the same as that of the third modification. Therefore, also in this modification, the modification shown in the modification 3 can be applied.

  The pair of folded portions 90 has basically the same configuration as the leaf spring portion 51 of Modification 3 except that the pair of folded portions 90 does not have an elastic deformation function. In other words, the folded portion 90 extends from the both ends of the interposition portion 50 in the Y direction toward the back surface 43c in the X direction and is folded with respect to the interposition portion 50 so as to face the interposition portion 50 in the X direction. Specifically, the folded portion 90 is folded so as to be substantially parallel to the interposition portion 50. For this reason, the interposition part 50 and the folding | returning part 90 have comprised the substantially U shape (in other words, substantially C shape). The facing distance between the folded portion 90 and the interposition portion 50 is a predetermined distance. This facing distance is substantially constant in the Z direction.

  The pair of receiving portions 89 are made by mixing a filler for enhancing thermal conductivity into rubber. As the rubber, for example, silicone rubber can be employed. Silicone rubber is also referred to as silicone rubber. As the filler, metal fillers such as graphite, aluminum, copper and silver, inorganic fillers such as oxides and nitrides such as aluminum oxide, fillers whose surfaces are metal-plated, and the like can be used. Thus, the receiving part 89 is formed using rubber | gum, and has an elastic deformation function.

  The height of the receiving portion 89 in the X direction is set such that the total length of the extending portion 88 and the thickness is longer than the facing distance between the folded portion 90 and the interposition portion 50 in a state before being sandwiched. Has been. For this reason, in a state where the folded portion 90 is in contact with the protruding tip of the receiving portion 89, that is, in a state where the receiving portion 89 is sandwiched between the folded portion 90 and the interposition portion 50, the receiving portion 89 is shown by a broken line arrow in FIG. As shown, the reaction force due to elastic deformation is applied to the corresponding folded portion 90 and the interposition portion 50. In order to improve assemblability, a protrusion such as a wedge shape or a hemispherical shape may be provided on the contact surface side of the folded portion 90. In this case, the facing distance to the interposition part 50 is the distance from the tip of the protrusion. Further, a part of the receiving portion 89 may be tapered so that the protruding height gradually changes so that it can be easily assembled to the bracket 33.

  According to the configuration described above, the same effects as those of the electronic control device shown in the third modification can be obtained. Since the rubber constituting the receiving portion 89 is mixed with a filler for increasing thermal conductivity, the heat of the circuit board 30 is efficiently transferred to the bracket 33 side via the receiving portion 89 and the folded portion 90. You can also dissipate heat well.

  The elastically deformable receiving portion 89 is not limited to one using rubber. A metal spring can also be used. For example, a metal spring may be fixed on the lower case 83, and a contact portion made of, for example, resin may be provided at the protruding tip of the metal spring so that the contact portion contacts the folded portion 90. Further, when the receiving portion 89 is fixed to the support portion 52 by the screw 34, the fixing portion in which the screw hole 44 is formed is made of metal, and the elastic deformation portion of rubber is fixed on the fixing portion. It is good. Further, as shown in the third modification, a stepped portion is provided on the connecting surface 43d of the housing 31b, and a member formed using rubber is fixed to the stepped portion, whereby this member is used as the receiving portion 89. You can also.

(Other variations)
Although the example in which the housing 31 is disposed beside the short side surface 19c of the battery 19 is shown, the present invention is not limited to this. You may arrange | position beside the long side surface 19b.

  Although the example of the battery 19 was shown as a box-shaped member, it is not limited to this. In addition, it may be employed as long as it has a flat portion at a part of the side surface and is disposed 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. In other words, the mounted body can be the engine 18, the relay box 21, an air cleaner, or the like.

  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, such as 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 disposed. 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 bracket 33 showed the example which has the interposition part 50, the leaf | plate spring part 51, the support part 52, the baseplate part 55, and the horizontal board parts 56 and 57. As shown in FIG. However, the bracket 33 may have at least the interposition part 50 and the leaf spring part 51. For example, a configuration having only the interposition part 50, the leaf spring part 51, and the lateral plate part 57 can be adopted. Moreover, the structure which has only the interposition part 50, the leaf | plate spring part 51, and the bottom board part 55 is also employable. Furthermore, a configuration in which only the horizontal plate portion 56 is eliminated in the tray portion 54 can be adopted.

  Furthermore, in the above embodiment and the like, an example in which the electronic control device 20 is mounted on the vehicle 10 is adopted. However, the present invention is not limited to this. Similarly, the present invention can achieve the object even if it is not disposed at a position adjacent to the battery 19.

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 part, 20 ... electronic control unit, 21 ... relay box, 22, 23 ... wire harness, 24 ... clamp member, 25 ... hook member, 30 ... circuit Substrate, 31 ... housing, 32 ... connector, 32a ... housing, 32b ... terminal, 33 ... bracket, 34 ... screw, 40 ... bottom, 41 ... opening, 42 ... side wall, 43a ... bottom, 43b ... opposite surface, 43c ... Back surface, 43d ... Connection surface, 43e ... Slope part, 44 ... Screw hole, 50 ... Interposition part, 51, 51a ... Leaf spring part, 51a1 Auxiliary fixing part, 52 ... support part, 53 ... through hole, 54 ... tray part, 55 ... bottom plate part, 56, 57 ... horizontal plate part, 58 ... fixing hole, 59 ... latching part, 60 ... heat transfer member, 70 ... heat insulating member, 81 ... intermediate case, 81a ... through hole, 81b ... inner peripheral end, 82 ... upper case, 83 ... lower case, 84, 89 ... receiving part, 85 ... frame part, 86 ... pedestal part, 87 ... main body Part, 88 ... extension part, 90 ... folding part, 100 ... electronic structure

Claims (11)

An electronic control device attached to an attached body (19) having a flat portion,
A circuit board (30) on which a heating element (30a) that generates heat by operation is mounted;
Forming a bag shape and having a bottom (40) at one end in the depth direction, and a metal casing (31) for housing the circuit board;
A member for attaching the casing to the attached body, and a bracket (33) fixing the casing;
When the direction perpendicular to the depth direction and the plane portion is the thickness direction, and the direction perpendicular to the depth direction and the thickness direction is the width direction,
The housing is
As an outer surface, a bottom surface (43a) which is an outer surface of the bottom portion, a facing surface (43b) disposed to face the flat portion, a back surface (43c) opposite to the facing surface in the thickness direction, and the facing surface And a pair of connecting surfaces (43d) for connecting both ends in the width direction on the back surface,
The pair of connecting surfaces are at least a part of the depth direction, and within a predetermined range in the thickness direction, the slope portion (43e) in which the distance between the pair of connecting surfaces in the width direction becomes narrower as the back surface is approached. Each with
The bracket is
A metal interposition part (50) interposed between the flat part and the facing surface;
The intermediate portion extends from both ends in the width direction and is folded back so as to face the intermediate portion in the thickness direction, contacts with the inclined surface portions of the pair of connecting surfaces, and spring-deforms to the corresponding inclined surface portion. A pair of metal folded portions (51, 51a) for applying a reaction force by
The electronic control device further comprises a heat transfer member (60) disposed between the inclined surface portion and the folded portion and transmitting heat generated from the heating element to the bracket.   2. The electronic control according to claim 1, wherein the folded portion (51 a) includes an auxiliary fixing portion (51 a 1) that protrudes toward the slope portion and applies a reaction force due to elastic deformation to the slope portion. apparatus.   The electronic control device according to claim 1, wherein the housing has a trapezoidal shape when viewed from the depth direction.   4. The electronic control device according to claim 1, wherein the heating element is disposed in the vicinity of the slope portion. 5. An electronic control device attached to an attached body (19) having a flat portion,
A circuit board (30) on which a heating element (30a) that generates heat by operation is mounted;
A connector (32) mounted on the circuit board and electrically relaying the circuit board and an external device;
A housing (31b) having a bottom wall (40) at one end in the depth direction and having the connector disposed at the other end, housing a part of the connector and the circuit board;
A member for attaching the casing to the attached body, and a bracket (33) fixing the casing;
When the direction perpendicular to the depth direction and the plane portion is the thickness direction, and the direction perpendicular to the depth direction and the thickness direction is the width direction,
The housing is provided such that the back surface is positioned between a facing surface (43b) disposed to face the flat portion, a back surface (43c) opposite to the facing surface in the thickness direction, and the width direction. A pair of receiving portions (84, 89),
The bracket extends from both ends in the width direction of the interposition part and faces the interposition part in the thickness direction while interposing the metal interposition part (50) interposed between the plane part and the facing surface. A pair of metal folded portions (51, 90) which are folded back and contact the pair of receiving portions, respectively,
The pair of receiving portions are in contact with the folded portion at a position between the back surface and the facing surface in the depth direction,
In a state where the receiving part is sandwiched between the interposition part and the folded part, one of the pair of receiving parts and the pair of folded parts gives a reaction force due to elastic deformation to the other,
Furthermore, the said receiving part is a heat transfer member which transmits the heat | fever emitted from the said heat generating element to the said bracket, The electronic control apparatus characterized by the above-mentioned. The casing is formed by assembling a plurality of casing constituent members (81, 82, 83) configured to be split in the thickness direction,
The plurality of housing components include a metal lower case (83) that constitutes the facing surface,
The electronic control device according to claim 5, wherein the pair of receiving portions are provided on a surface of the lower case opposite to the facing surface.   The electronic control device according to claim 5, wherein the heat generating element is disposed in the vicinity of the receiving portion.   The bracket is connected to each of the pair of folded portions or both ends in the width direction of the interposition portion, and extends in a direction opposite to the direction in which the folded portion extends from the interposition portion. The electronic control device according to any one of claims 1 to 7, further comprising a metal reinforcing portion (57).   The electronic control device according to any one of claims 1 to 8, wherein the bracket includes a metal support portion (55) that supports the mounted body.   A heat insulating member for suppressing heat transfer between the circuit board and the mounted body, at least between the planar portion and the interposition portion, of the portions of the mounted body and the bracket facing each other. (70) is arrange | positioned, The electronic control apparatus as described in any one of Claim 1 thru | or 9 characterized by the above-mentioned. The electronic control device according to any one of claims 1 to 10, wherein a battery mounted on a vehicle and having four side surfaces is used as the mounted body.
The electronic control device according to claim 1, wherein the facing surface of the housing is disposed to face one of the side surfaces of the battery.

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