Electronic control unit

Abstract

To provide an electronic control unit that increases a degree of freedom of internal wiring.SOLUTION: An electronic control unit 1 includes a substrate 10 on which electronic components 11 are mounted, a plurality of terminals 20 each having a first end 20a connected to the substrate 10, a plurality of electric wires 30 each having a first terminal 31 connected to one of second ends 20b of the plurality of terminals 20 opposite the first end 20a, and a wiring stand 50 having a plate-shaped base 51 arranged parallel to the substrate 10. The wiring stand 50 routes the electric wires 30 introduced from outside on a routing surface 51a of the base 51 opposite to a back surface 51b that faces the substrate 10. The second ends 20b of at least one terminal 20 are located between the base 51 and the substrate 10. The base 51 partially faces the terminal 20 whose second ends 20b are located between the base 51 and the substrate 10, and has an opening 81a through which the electric wire 30 is introduced.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an electronic control unit. [Background technology]

[0002] Conventionally, vehicles such as automobiles are equipped with electronic control units used to control various functions. Generally, electronic control units include a circuit board on which electronic components are mounted. As an example of such a circuit board, Patent Document 1 discloses a technology relating to an electrical junction box including a wiring board having a plurality of reinforcing protrusions for supporting male terminals for connecting fuses. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-58129 Summary of the Invention [Problem to be solved by the invention]

[0004] It is also conceivable to connect electric wires to terminals on a substrate such as the wiring board disclosed in Patent Document 1, one end of which is joined to the substrate. Furthermore, when multiple electric wires are routed on the substrate, a wiring stand may be provided parallel to the substrate, and the multiple electric wires may be routed on the wiring stand, after which the ends of the electric wires may be connected to some of the terminals previously exposed on the wiring stand. However, for example, when the arrangement of the multiple terminals exposed on the wiring stand is random or when a large number of electric wires are mixed on the wiring stand, there is room for improvement to increase the degree of freedom in wiring.

[0005] The present invention has been made in view of the problems inherent in the prior art, and an object of the present invention is to provide an electronic control unit that improves the degree of freedom in internal wiring. [Means for solving the problem]

[0006] An electronic control unit according to an embodiment of the present invention comprises a substrate on which electronic components are mounted, a plurality of terminals having first ends connected to the substrate, a plurality of electric wires having first terminals connected to one of the second ends of the plurality of terminals opposite the first ends, and a wiring stand having a plate-shaped base portion arranged parallel to the substrate, wherein the wiring stand wires the plurality of electric wires introduced from outside on the side of the wiring surface opposite the back surface of the base portion facing the substrate, and the second end of at least one terminal is located between the base portion and the substrate, and the base portion has an opening that partially faces the terminal that positions the second end between the base portion and the substrate and allows the electric wires to be introduced. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an electronic control unit that improves the degree of freedom in internal wiring. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of an electronic control unit according to an embodiment. [Figure 2] FIG. 2 is a perspective view of a circuit unit included in the electronic control unit. [Figure 3] 3 is an enlarged perspective view of an electric wire connection portion corresponding to part III in FIG. 2. FIG. [Figure 4] FIG. 10 is a plan view of a circuit unit including an example of wiring on a wiring stand. [Figure 5] 5 is an enlarged plan view of an electric wire connection portion corresponding to the V portion in FIG. 4. [Figure 6] 6 is a side view of the electric wire connection portion corresponding to the cross section VI-VI of FIG. 5. [Figure 7] 7 is a cross-sectional view of the electric wire connection portion corresponding to the VII-VII cross section of FIG. 5. [Figure 8] 8 is a side view of the electric wire connection portion corresponding to the VIII-VIII cross section of FIG. 5. [Figure 9] 9 is a cross-sectional view of the electric wire connection portion corresponding to the cross section IX-IX of FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0009] An electronic control unit according to one embodiment will be described in detail below with reference to the drawings. Hereinafter, the term "electronic control unit" will be abbreviated as "ECU." ECU is an abbreviation for Electronic Control Unit. Note that the dimensional proportions in the drawings are exaggerated for the sake of explanation and may differ from the actual proportions.

[0010] Fig. 1 is a perspective view of an ECU 1 according to an embodiment, and Fig. 2 is a perspective view of a circuit unit 3 included in the ECU 1.

[0011] The ECU 1 is mounted on a vehicle such as an automobile and controls various functions. The ECU 1 includes a circuit board 10, a plurality of terminals 20, a plurality of electric wires 30, a connector 40, a wiring base 50, a first cover 60, and a second cover 70.

[0012] In this embodiment, a unit configured from the substrate 10, the plurality of terminals 20, some of the plurality of electric wires 30, the wiring base 50, the first cover 60, and the second cover 70 is referred to as the "main body 2." Also, a unit configured from the substrate 10, the plurality of terminals 20, the plurality of electric wires 30, the connector 40, and the wiring base 50 is referred to as the "circuit unit 3."

[0013] The substrate 10 is, for example, a printed circuit board (PCB) on which a plurality of electronic components 11 (see FIG. 6, etc.) are pre-mounted. The plurality of electronic components 11 may include a central processing unit (CPU) and a memory. In this embodiment, the substrate 10 is considered to be a substantially rectangular flat plate that is parallel to a virtual XY plane defined by an X direction and a Y direction that are orthogonal to each other, and has two end sides along the X direction and two end sides along the Y direction.

[0014] Each of the multiple terminals 20 electrically connects one of the electric wires 30 to a predetermined circuit on the substrate 10. Each terminal 20 is a flat, rod-shaped metal member. Each terminal 20 has a first end 20a, which is one end, and a second end 20b, which is the other end opposite the first end 20a (see FIG. 6, etc.). The first end 20a is connected to a predetermined circuit on the substrate 10. In this embodiment, the substrate 10 is regarded as a flat plate parallel to the XY plane, and each terminal 20 is disposed on the mounting surface 10a (see FIG. 6, etc.) so as to protrude along the Z direction, which is perpendicular to both the X and Y directions. The second end 20b connects to a first terminal 31 (see FIG. 4) of one of the electric wires 30. The second end 20b includes, for example, two parallel protruding pieces. The first terminal 31 can be easily connected by sandwiching the core wire of the electric wire 30 between the two protruding pieces.

[0015] In this embodiment, the multiple terminals 20 are roughly classified into two types based on the height at which the second end 20b is located when assembled in the circuit unit 3. Specifically, among the multiple terminals 20, there is at least one terminal (hereinafter referred to as a "first terminal") whose second end 20b is located between the base portion 51 of the wiring stand 50 and the substrate 10 when assembled in the circuit unit 3. On the other hand, among the multiple terminals 20, there is one terminal (hereinafter referred to as a "second terminal") whose second end 20b is at least partially exposed on the wiring surface 51a of the base portion 51 when assembled in the circuit unit 3. Note that the terminals 20 shown in each drawing correspond to the first terminal, and the second terminal is not shown for convenience.

[0016] Each of the multiple electric wires 30 electrically connects the connector 40 to one of the terminals 20. Each electric wire 30 is an electric wire in which a core wire, which is a conductor, is covered with an insulator. Each electric wire 30 has a first terminal 31, which is one end, and a second terminal 32, which is the other end opposite the first terminal 31. As described above, the first terminal 31 is connected to one of the second ends 20b of the terminals 20. The second terminal 32 is connected to the connector 40. Note that for both the first terminal 31 and the second terminal 32, the portion that actually comes into contact with the second end 20b or the connector 40 is the core portion where the insulation has been stripped off and a portion is exposed.

[0017] The connectors 40 are connected to external connectors (not shown) provided on an object to which the ECU 1 is attached. In this embodiment, the ECU 1 is provided with, for example, three connectors 40: a first connector 40a, a second connector 40b, and a third connector 40c. The second terminals 32 of the electric wires 30 are connected to either the first connector 40a, the second connector 40b, or the third connector 40c. Each connector 40 is not directly installed on the board 10, but is connected to the main body 2 of the ECU 1 only via the electric wires 30.

[0018] The wiring stand 50 routes each electric wire 30 inside the main body 2 while connecting the first terminal 31 of each electric wire 30 to the corresponding terminal 20. The wiring stand 50 is made of, for example, synthetic resin, and is a flat member arranged parallel to the board 10. Note that the wiring stand 50 can also be referred to as a "wiring layer" because it is maintained in a position such that it is stacked on the board 10. The wiring stand 50 has a base portion 51, a side wall portion 52, a pedestal portion 53, at least one first terminal block 54 (see FIG. 6, etc.), multiple second terminal blocks 55, and an electric wire introduction portion 56.

[0019] The base portion 51 is a plate portion that faces the substrate 10 in the Z direction. The planar shape of the base portion 51 is the same as the planar shape of the substrate 10. One surface of the base portion 51 is a routing surface 51a on which a portion of each electric wire 30 is routed. The other surface of the base portion 51 is a back surface 51b (see FIG. 6, etc.) that is located opposite the routing surface 51a and faces the substrate 10.

[0020] The side wall portion 52 is continuous with the edge portion of the base portion 51 and protrudes in the Z direction in the direction opposite to the side facing the board 10 so as to surround the wiring space on the wiring surface 51a. However, the side wall portion 52 is not a frame-like portion that surrounds the entire four sides as in this embodiment, but is continuous with at least one wire introduction portion 56.

[0021] The pedestal portion 53 is continuous with the edge of the base portion 51 and protrudes along the Z direction so that at least a portion of the pedestal portion 53 contacts the outer edge of the mounting surface 10a of the substrate 10. This maintains a constant distance between the base portion 51 and the substrate 10.

[0022] The first terminal block 54 and the second terminal block 55 each support at least a portion of the second end 20b of any of the terminals 20 while exposing it. The arrangement of each terminal 20 depends on the circuit configuration on the mounting surface 10a of the substrate 10. Therefore, the arrangement of each of the first terminal block 54 and the second terminal block 55 is also determined based on the circuit configuration of the substrate 10.

[0023] Fig. 3 is an enlarged perspective view of the electric wire connection portion 4 corresponding to part III in Fig. 2. Here, the electric wire connection portion 4 refers to a component where the electric wire 30 is connected to the second end 20b of the terminal 20 in the first terminal block 54 or the second terminal block 55.

[0024] The first terminal block 54 supports the second end 20b of a first terminal among the multiple terminals 20. In this embodiment, as an example, there are three terminals 20 serving as first terminals, and three first terminal blocks 54 each supporting each of these terminals 20. The first terminal block 54 has an opening groove 81 that exposes a portion of the second end 20b therein. For each electric wire 30, a portion of the first terminal 31 is inserted into a predetermined opening groove 81, thereby connecting the core wire of the first terminal 31 to the second end 20b. FIG. 3 shows a portion of each opening groove 81 and an opening 81a of the opening groove 81 that is exposed from the wiring surface 51a. Hereinafter, the three electric wire connection portions 4 each including the first terminal block 54 will be referred to as the first electric wire connection portion 4a, the second electric wire connection portion 4b, and the third electric wire connection portion 4c. The first wire connecting portion 4a, the second wire connecting portion 4b, and the third wire connecting portion 4c are aligned in the direction opposite to the X direction. The specific configuration of the wire connecting portion 4 including the first terminal block 54 will be described in detail below.

[0025] The second terminal block 55 supports a second end of a second terminal (not shown) among the multiple terminals 20. As will be described later, the first terminal block 54 is provided on the back surface 51b of the base block 51, whereas the second terminal block 55 is provided on the wiring surface 51a of the base block 51. The basic shape of the second terminal block 55 itself is similar to that of the first terminal block 54. Specifically, the second terminal block 55 supporting the second end of one terminal 20 has a shape that is roughly obtained by inverting the first terminal block 54 in the Z direction with the base block 51 as the base. Note that the second terminal block 55 may have a shape in which multiple second terminal blocks 55, each supporting the second end of one terminal 20, are arranged in parallel and continuously integrated.

[0026] In this embodiment, the case where there are three first terminals among the multiple terminals 20 and all other than the first terminals are second terminals is exemplified. However, there may be more first terminals than second terminals among the multiple terminals 20. Furthermore, all of the multiple terminals 20 may be first terminals. In other words, the presence of second terminals is not essential. Therefore, when all of the multiple terminals 20 are first terminals, all of the multiple terminal blocks present in the wiring stand 50 are first terminal blocks 54.

[0027] The wire introduction portion 56 supports a portion of the wire 30 and introduces the wire 30 from the outside of the wiring table 50 onto the wiring surface 51a of the base portion 51. The wire introduction portion 56 is at least one convex portion provided on the outer edge of the wiring table 50 on the side of the wiring surface 51a. In the present embodiment, as an example, there are three wire introduction portions 56: a first wire introduction portion 56a extending along the Y direction, and a second wire introduction portion 56b and a third wire introduction portion 56c each extending along the X direction. When routing the wire 30, it is not necessary to use all of the wire introduction portions 56. FIG. 1 shows, as an example, a configuration in which all of the wires 30 are introduced from the connector 40 into the main body 2 through only the first wire introduction portion 56a.

[0028] The first cover 60 and the second cover 70 are combined with each other to accommodate at least the substrate 10, the plurality of terminals 20, and the wiring stand 50 included in the circuit unit 3. The first cover 60 and the second cover 70 may be made of, for example, synthetic resin or metal.

[0029] The first cover 60 is a cover that is assembled from the side facing the board 10. The first cover 60 has a first flat plate portion 61 (see FIG. 6 ) that covers the board 10, and a first frame portion 62 that is continuous with the edge of the first flat plate portion 61. The first frame portion 62 protrudes, for example, along the Z direction, which is the direction in which the first cover 60 is assembled to the second cover 70, so as to surround the board 10. A part of a first tip edge 62a of the first frame portion 62 is adjacent to, but not in contact with, the electric wire introduction portion 56 of the wiring table 50.

[0030] The second cover 70 is a cover that is assembled from the side facing the wiring surface 51a of the wiring table 50. The second cover 70 has a second flat plate portion 71 (see FIG. 6 ) that covers the wiring table 50 and a second frame portion 72 that is continuous with an edge portion of the second flat plate portion 71. The second frame portion 72 protrudes, for example, in the direction opposite to the Z direction, which is the direction in which the second cover 70 is assembled to the first cover 60, so as to surround at least a portion of the wiring table 50. A portion of the second tip edge 72a of the second frame portion 72 is adjacent to but not in contact with the wire introduction portion 56 of the wiring table 50. A portion of the area sandwiched between the first tip edge 62a of the first frame portion 62 of the first cover 60 and the second tip edge 72a of the second frame portion 72 of the second cover 70 becomes an opening area that allows a plurality of wires 30 to pass between the inside and outside of the main body 2.

[0031] The first cover 60 has a plurality of first locking portions 63 on the first frame portion 62. Meanwhile, the second cover 70 has a plurality of second locking portions 73 on the second frame portion 72. The second cover 70 is combined with the first cover 60 by engaging the second locking portions 73 with the first locking portions 63.

[0032] Next, a specific configuration of the electric wire connecting portion 4 including the first terminal block 54 will be described.

[0033] 4 is a plan view of the circuit unit 3 including an example of wiring on the wiring base 50. FIG. 5 is an enlarged plan view of the wire connection portion 4 including the first terminal block 54, corresponding to the V portion in FIG.

[0034] Here, although a large number of electric wires 30 can actually be routed on the wiring stand 50, for the sake of simplicity, only two electric wires 30, a first electric wire 30a and a second electric wire 30b, will be illustrated below.

[0035] The first electric wire 30a is an example of an electric wire 30 that is drawn into the main body 2 from a connector (not shown) similar to the connector 40 through the second electric wire introduction portion 56b. The first electric wire 30a is routed linearly from the second electric wire introduction portion 56b toward the first electric wire connection portion 4a on the routing surface 51a, passing through, for example, gaps between a plurality of second terminal blocks 55. A first terminal 31 of the first electric wire 30a is connected to a second end portion 20b of a terminal 20 at the first electric wire connection portion 4a.

[0036] The second electric wire 30b is an example of an electric wire 30 that is drawn from the connector 40 into the main body 2 through the first electric wire introduction portion 56a. The second electric wire 30b is routed linearly from the first electric wire introduction portion 56a to the second end 20b of the terminal 20 supported by one of the second terminal blocks 55 on the routing surface 51a, for example, while passing through gaps between the plurality of second terminal blocks 55. Hereinafter, for convenience, the second terminal block 55 that supports the second end 20b to which the first terminal 31 of the second electric wire 30b is connected will be referred to as the "connection terminal block 55a." The connection terminal block 55a is provided near another side wall portion 52 that faces in the X direction the side wall portion 52 on which the first electric wire introduction portion 56a is provided.

[0037] The second electric wire 30b passes through the upper portions of the openings 81a corresponding to the first electric wire connection portion 4a, the second electric wire connection portion 4b, and the third electric wire connection portion 4c. The second electric wire 30b passes through the upper portion of the first electric wire 30a connected to the first electric wire connection portion 4a. Here, the "upper portion" of each portion refers to the region corresponding to the upper side when the routing surface 51a is set as a horizontal plane and the normal direction of the routing surface 51a aligned with the Z direction is set as a direction from bottom to top.

[0038] 6 and 7 are views of the first wire connection portion 4a, the second wire connection portion 4b, and the third wire connection portion 4c as viewed in the Y direction. Fig. 6 is a side view of the wire connection portion 4 corresponding to the VI-VI cross section in Fig. 5. Fig. 7 is a cross-sectional view of the wire connection portion 4 corresponding to the VII-VII cross section in Fig. 5. The cross section in Fig. 7 is an XZ plane passing through a middle position in the thickness direction, which corresponds to the Y direction, of the terminal 20 supported by the first terminal block 54.

[0039] 8 and 9 are views of the first wire connecting portion 4a as viewed in the direction opposite to the X direction. Fig. 8 is a side view of the first wire connecting portion 4a corresponding to the VIII-VIII cross section in Fig. 5. Fig. 9 is a cross-sectional view of the first wire connecting portion 4a corresponding to the IX-IX cross section in Fig. 5. The cross section in Fig. 9 is a YZ plane passing through a middle position in the width direction, which corresponds to the X direction, of the terminal 20 supported by the first terminal block 54.

[0040] The three electric wire connecting portions 4 including the first terminal block 54 have the same configuration. Therefore, the following will mainly focus on the first electric wire connecting portion 4a and explain the shape of each portion.

[0041] First, as described above, the second end 20b of the terminal 20 serving as the first terminal connects to the electric wire 30 by sandwiching the core wire of the electric wire 30 between the two protruding pieces. Hereinafter, the position where the second end 20b sandwiches and connects the first electric wire 30a is defined as "connection point 5" as shown in Figures 7 and 9. Since the second end 20b is located between the base 51 and the board 10, the connection point 5 is located closer to the board 10 than the position of the base 51.

[0042] In this embodiment, the first terminal block 54 is provided for each terminal 20, and therefore there are three first terminal blocks 54, one for the first wire connection portion 4a, one for the second wire connection portion 4b, and one for the third wire connection portion 4c. Note that, similar to the example of the second terminal block 55 described above, the first terminal block 54 may have a shape in which three first terminal blocks 54, each supporting the second end portion 20b of one terminal 20, are continuously arranged in parallel and integrated together.

[0043] The first terminal block 54 has an overall schematic shape of a rectangular parallelepiped with one end continuing to the rear surface 51b of the base portion 51. The first terminal block 54 has a terminal through-hole 80 and an open groove 81.

[0044] The terminal through-hole 80 accommodates the second end 20b of the terminal 20. The terminal through-hole 80 penetrates along the Z direction, which is the direction in which the base portion 51 and the substrate 10 face each other. One opening of the terminal through-hole 80 is located at the tip of the first terminal block 54 facing the substrate 10. The other opening of the terminal through-hole 80 is located at the bottom surface 81b of the opening groove 81. However, a portion of the wall portion defining the terminal through-hole 80 may be a pair of groove portions extending in the Z direction from the bottom surface 81b to the opening 81a and exposed from the wiring surface 51a. In other words, if the exposed end of the groove portion is also considered to be part of the opening 81a, then a portion of the opening 81a can be considered to face the terminal 20 in the Z direction. In this embodiment, the direction in which the second end 20b clamps the first electric wire 30a (hereinafter referred to as the "clamping direction") is along the X direction, so that a pair of groove portions in which a portion of the wall portion defining the terminal through hole 80 is exposed from the wiring surface 51a also face each other in the X direction.

[0045] The opening groove 81 has at least an opening 81a formed as part of the base portion 51 on the routing surface 51a side and a bottom surface 81b spaced from the opening 81a toward the board 10. The first terminal 31 of the first electric wire 30a is introduced through the opening 81a. The opening groove 81 communicates with the terminal through-hole 80 and exposes a portion of the second end 20b of the terminal 20 therein. To satisfy the conditions that the first terminal 31 is introduced through the opening 81a and that the introduced first terminal 31 is sandwiched and connected by the second end 20b, the first width W1 of the opening 81a in the sandwiching direction is set to be larger than the dimension value of the outer diameter D of the first electric wire 30a. Meanwhile, the second width W2 of the opening 81a in a direction perpendicular to the first width W1 is set to be longer than the first width W1 to such an extent that the tip of the first terminal 31 can be exposed on the routing surface 51a as in this embodiment.

[0046] The bottom surface 81b of the open groove 81 is approximately parallel to the routing surface 51a and is set, for example, at a position a distance L from the back surface 51b of the base portion 51. The distance L may be set in advance so that the connection point 5 is at a desired position when the first terminal 31 of the first electric wire 30a introduced into the open groove 81 is in contact with the bottom surface 81b. The open groove 81 may be open between the back surface 51b and the bottom surface 81b of the base portion 51 so as to be open to the spatial region between the base portion 51 and the board 10.

[0047] Next, the effects of the ECU 1 will be described.

[0048] The ECU 1 includes a substrate 10 on which electronic components 11 are mounted, a plurality of terminals 20 each having a first end 20a connected to the substrate 10, and a plurality of electric wires 30 each having a first terminal 31 connected to one of second ends 20b of the plurality of terminals 20 opposite the first end 20a. The ECU 1 also includes a wiring stand 50 having a plate-shaped base 51 arranged parallel to the substrate 10. The wiring stand 50 routes the electric wires 30 introduced from outside on a side of a wiring surface 51a of the base 51 opposite a back surface 51b of the base 51 that faces the substrate 10. The second end 20b of at least one terminal 20 is located between the base 51 and the substrate 10. The base 51 partially faces the terminal 20 whose second end 20b is located between the base 51 and the substrate 10, and has an opening 81a through which the electric wire 30 is introduced.

[0049] 6 and 8, it is assumed that a virtual terminal block 154 equivalent to the second terminal block 55 is provided at the position of the first wire connection portion 4a instead of the first terminal block 54. In other words, the virtual terminal block 154 supports a second terminal in which at least a portion of the second end portion 20b is exposed on the wiring surface 51a of the base portion 51. In addition, the height of the tip surface 154a of the virtual terminal block 154 in the Z direction can be set to be equivalent to the position of the tip edge 52a of the side wall portion 52 of the wiring base 50.

[0050] In the comparative example in which the virtual terminal block 154 is present, the first electric wire 30a can be routed along a wiring path equivalent to the example described above when the virtual terminal block 154 is not present, by connecting the first terminal 31 to the second end 20b supported by the virtual terminal block 154. However, the presence of the virtual terminal block 154 at the position of the first electric wire connection portion 4a prevents the second electric wire 30b from passing over the opening 81a included in the first electric wire connection portion 4a. Therefore, as shown in FIG. 4 , the virtual electric wire 130b replacing the second electric wire 30b is routed along a wiring path that avoids not only the virtual terminal block 154 but also multiple other second terminal blocks 55. In other words, the wiring path of the virtual electric wire 130b is expected to be more complex than the wiring path of the second electric wire 30b. Furthermore, the length of the virtual electric wire 130b is expected to be longer than the length of the second electric wire 30b.

[0051] In contrast, in the ECU 1 according to this embodiment, the second end 20b of the desired terminal 20 is shaped to be located between the base portion 51 and the substrate 10, so that the connection point 5 for connecting to the first terminal of the desired electric wire 30 is not located on the routing surface 51a. Therefore, according to the ECU 1, when it is desired to route some electric wires 30, such as the second electric wire 30b, along a simple, straight path, it is possible to prevent the second end 20b of the terminal 20 from being located at a position that intersects with the wiring path. Furthermore, although the wiring path is set on the side of the routing surface 51a, preventing the second end 20b from being located at a position that intersects with the wiring path means that the second terminal block 55 does not need to be located on the routing surface 51a. 4 and 5, the second electric wire 30b is less likely to interfere with an electric wire 30 such as the first electric wire 30a connected to a certain terminal 20 or a terminal block on the side of the routing surface 51a such as the second terminal block 55, thereby improving the degree of freedom in wiring the electric wire 30. In particular, instead of the examples shown in the figures, if the second ends 20b of most of the multiple terminals 20 are positioned between the base portion 51 and the board 10, the degree of freedom in wiring the electric wire 30 can be further improved.

[0052] As described above, according to this embodiment, it is possible to provide an ECU 1 that improves the degree of freedom in internal wiring.

[0053] Furthermore, according to ECU1, the wiring freedom is improved, and the wiring path for each electric wire 30 is simplified, so that the number of electric wires 30 can be reduced, and further, the wiring space on the wiring stand 50 is increased, so that the main body 2 can be made smaller and lighter.

[0054] In the ECU 1, the wiring base 50 may have a plurality of terminal blocks that support the second end 20b by exposing a portion of the second end 20b therein. The terminal blocks that support the second end 20b located between the base 51 and the circuit board 10 may be provided on the back surface 51b of the base 51.

[0055] In the above example, among the multiple terminal blocks, the terminal block that supports the second end 20b located between the base portion 51 and the substrate 10 is the first terminal block 54. On the other hand, the terminal blocks other than the first terminal block 54 are the second terminal blocks 55.

[0056] According to this ECU1, the terminal 20, which has its second end 20b positioned between the base portion 51 and the board 10, is also supported by the first terminal block 54, so that the connection stability between the terminal 20 and the electric wire 30 is not reduced.

[0057] Furthermore, the ECU 1 may include a connector 40 to which a second terminal 32 opposite to the first terminal 31 of each electric wire 30 is connected.

[0058] In this ECU 1, the connector 40 is not installed on the board 10, but is merely connected to the main body 2 via a plurality of electric wires 30, and therefore the position of the connector 40 relative to the main body 2 can be freely changed. Therefore, with the ECU 1, it is possible to prevent problems such as the external electric wires causing a bulge around the main body 2, thereby reducing the passenger space inside the vehicle.

[0059] Although one embodiment has been described above, the embodiment is not limited to this, and various modifications are possible within the scope of the gist of the embodiment. [Explanation of symbols]

[0060] 1 Electronic Control Unit (ECU) 10 Substrate 11 Electronic Components 20 terminals 20a First end 20b 2nd end 30 Electric wire 30a 1st wire 31 Terminal 1 32 Terminal 2 40 connectors 50 Routing stand 51 Base 51a Routing surface 51b back side 54 1st terminal block 55 2nd terminal block 81a Opening

Claims

1. a substrate on which electronic components are mounted; a plurality of terminals having first ends connected to the substrate; a plurality of electric wires each having a first terminal connected to any of second ends of the plurality of terminals opposite to the first end; a wiring stand having a plate-shaped base portion arranged parallel to the substrate, The wiring stand wires the plurality of electric wires introduced from the outside on a wiring surface side of the base portion opposite to a back surface facing the board, the second end of at least one of the terminals is located between the base portion and the substrate; The base portion has a portion facing the terminal that positions the second end portion between the base portion and the board, and has an opening through which the electric wire is introduced.

2. The wiring base has a plurality of terminal blocks that support the second end portion while exposing a portion of the second end portion therein, The electronic control unit according to claim 1 , wherein the terminal block supporting the second end portion located between the base portion and the circuit board is provided on the rear surface of the base portion.

3. The electronic control unit according to claim 1 or 2, further comprising a connector to which a second terminal of each of the electric wires is connected, the second terminal being opposite to the first terminal.

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