JP2014011398A - Control device and motor unit including the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device having a configuration capable of reducing a dimension in a plane direction of a bottom wall, and a motor unit including the device.SOLUTION: A control device 20 of a motor unit 1 includes a housing 90 and a circuit board 30. The housing 90 includes a bottom wall 91, a sidewall 92, and a housing space 94. The circuit board 30 is disposed in the housing space 94. The circuit board 30 has a first substrate part 50, a second substrate part 60, an intermediate substrate part 70, a first connection part 41 which connects the first substrate part 50 and the intermediate substrate part 70 with each other, and a second connection part 42 which connects the second substrate part 60 and the intermediate substrate part 70 with each other. The circuit board 30 has a shape of being bent in accordance with the shape of the sidewall 92 by bending the first connection part 41 and the second connection part 42 respectively. The circuit board 30 has a plurality of connection terminals 32 for connecting external components at the intermediate substrate part 70.

Description

  The present invention relates to a control device having a housing and a circuit board, and a motor unit including the device.

  The control device of Patent Document 1 includes a housing, a circuit board, and a plurality of circuit elements. The housing has a bottom wall and a side wall rising from the bottom wall. The circuit board is attached to the bottom wall in a state along the surface of the bottom wall.

JP 2008-41718 A

  In the control device, all circuit elements are mounted on a flat circuit board. For this reason, the dimension of the circuit board in the planar direction of the bottom wall increases. For this reason, it is difficult to reduce the size of the control device in the plane direction of the bottom wall.

  In order to solve the above-described problems, an object of the present invention is to provide a control device having a configuration capable of reducing the size of the bottom wall in the planar direction, and a motor unit including the device.

  (1) The first means is the control device having the invention according to claim 1, that is, a housing and a circuit board, wherein the housing is surrounded by a bottom wall, a side wall rising from the bottom wall, and the side wall. The circuit board is a substrate that is disposed in the accommodation space and rises on the bottom wall, the first substrate portion, the second substrate portion, the first substrate portion, and the An intermediate substrate portion positioned between the second substrate portion, a first connection portion connecting the first substrate portion and the intermediate substrate portion to each other, and connecting the second substrate portion and the intermediate substrate portion to each other. A second connecting portion, and the first connecting portion and the second connecting portion are bent so that the first substrate portion, the second substrate portion, and the intermediate substrate portion match the shape of the side wall. Thereby has a shape bent, and summarized in that the a control device having a connection terminal for connecting to an external component in the intermediate substrate portion.

  The circuit board of the control device is disposed in the accommodation space in a state of rising on the bottom wall, and the first substrate portion, the second substrate portion, and the intermediate substrate portion are bent in accordance with the shape of the side wall. For this reason, the dimension of the circuit board in the plane direction of a bottom wall becomes small. For this reason, it is possible to reduce the size of the control device in the plane direction of the bottom wall.

  (2) The second means is the control device according to claim 2, wherein the circuit board has a right angle or an obtuse angle as a bending angle of the first substrate portion and the intermediate substrate portion. It is a summary.

  Since the circuit board has a right angle or an obtuse angle as a bending angle of the first substrate portion and the intermediate substrate portion, the first connecting portion and the intermediate substrate portion are compared with the case where the bending angle of the first substrate portion and the intermediate substrate portion has an acute angle. The circuit elements can be easily arranged in the vicinity of the second connection portion.

  (3) The third means is the invention according to claim 3, that is, the intermediate board portion has a plurality of connection terminals, and the plurality of connection terminals are arranged such that the circuit board is connected to the bottom wall. The gist of the present invention is the control device according to claim 1, wherein the control devices are aligned in a rising direction which is a rising direction.

  Since the intermediate board portion of the circuit board has a plurality of connection terminals aligned in the rising direction, the width of the intermediate board portion is reduced as compared with the configuration in which the plurality of terminals are aligned in the width direction of the intermediate board portion. Can be small.

  (4) The fourth means is the control device according to any one of claims 1 to 3, wherein the side wall has an opening in a portion facing the connection terminal. It is a summary.

  Since the side wall of the control device has an opening in the portion facing the connection terminal, the wiring of the external part is routed compared to the configuration assumed to have the opening in the other part of the side wall or the bottom wall. Is simplified.

  (5) The fifth means is that the invention according to claim 5, that is, the first substrate portion, the second substrate portion, the intermediate substrate portion, the first connection portion, and the second connection portion are continuous. The gist of the present invention is the control device according to any one of claims 1 to 4, which is integrally formed of a thermoplastic resin film.

  Since the circuit board of the control device is integrally formed of a continuous thermoplastic resin film, the first board part, the second board part, and the intermediate board part can be easily bent according to the shape of the side wall. Can do.

  (6) The sixth means is the invention according to claim 6, that is, the housing has a cylindrical shape, and the circuit board has the first piece of square piece and the second piece of square piece. A substrate portion, and a rectangular piece-shaped intermediate substrate portion, wherein a distance between each of the first connection portion and the second connection portion and the side wall is a central portion in the width direction of the first substrate portion, 6. The control device according to claim 1, wherein each of the central portion in the width direction of the second substrate portion and the central portion in the width direction of the intermediate substrate portion is shorter than the distance between the side walls. This is the gist.

  In the above control device, the distance between each of the first connection portion and the second connection portion and the side wall is such that the center portion in the width direction of the first substrate portion, the center portion in the width direction of the second substrate portion, and the intermediate substrate portion. It is shorter than the distance between each of the central portions in the width direction and the side wall. For this reason, the space | interval of each of a 1st board | substrate part, a 2nd board | substrate part, and an intermediate | middle board | substrate part and a side wall becomes small. For this reason, a large space for arranging other components can be secured in the housing space.

  (7) The seventh means is the invention according to claim 7, that is, the first substrate portion, the second substrate portion, and the intermediate substrate portion have a width shorter than a radius of the housing. The gist of the present invention is the control device described in 1. above.

  In the control device, since the housing has a cylindrical shape, it is difficult to arrange other components between the side wall and the circuit board. On the other hand, in the above control device, in consideration of this point, the widths of the first substrate portion, the second substrate portion, and the intermediate substrate portion are made shorter than the radius of the housing. For this reason, the space between the circuit board and the side wall is reduced as compared with the configuration in which at least one width of the first board portion, the second board portion, and the intermediate board portion is assumed to be longer than the radius of the housing. . That is, the space in which it is difficult to place components is reduced. For this reason, it becomes possible to arrange | position various components efficiently in the accommodation space of a housing.

  (8) The eighth means is the invention according to claim 8, that is, the control device has a heat radiation member between at least one of the first substrate portion and the second substrate portion and the side wall. The gist is the control device according to any one of 1 to 7.

  Since the said control apparatus has a heat radiating member between at least one of a 1st board | substrate part and a 2nd board | substrate part, and a side wall, the heat | fever of a circuit board moves to a heat radiating member. For this reason, the temperature rise of a circuit board is suppressed.

  (9) The ninth means is the invention according to claim 9, that is, the first substrate portion is formed with a first substrate rear surface facing the side wall and a surface opposite to the first substrate rear surface. A first front end extending in a rising direction, which is a direction in which the circuit board rises with respect to the bottom wall, and a first second end extending in the rising direction and adjacent to the first connecting portion And the second substrate portion includes a second substrate rear surface facing the side wall, a second substrate front surface forming a surface opposite to the second substrate rear surface, and a second upper end extending in the rising direction. And a second end portion that extends in the rising direction and is adjacent to the second connecting portion, the intermediate substrate portion facing the side wall, the intermediate substrate rear surface facing away from the intermediate substrate rear surface The intermediate substrate front surface forming the surface, extending in the rising direction and the above An intermediate upper end adjacent to the first connecting portion, and an intermediate end portion extending in the rising direction and adjacent to the second connecting portion, wherein the first connecting portion includes the front of the first substrate and the intermediate The control according to any one of claims 1 to 8, wherein the second front portion and the intermediate substrate front surface are bent in a direction in which the front surface of the second substrate and the front surface of the intermediate substrate face each other. The gist is that it is a device.

  (10) The tenth means is the invention according to claim 10, that is, in the circuit board, one end portion of the first substrate portion forms one end portion of the circuit board, and the second substrate. The one end of the portion forms the other end of the circuit board, and the one end of the circuit board and the other end of the circuit board have a discontinuous relationship. The gist is the control device according to any one of the above.

  (11) The eleventh means is the motor unit having the invention according to the eleventh aspect, that is, the electric motor and the control device according to any one of the first to tenth aspects.

  The present invention provides a control device having a configuration capable of reducing the size of the bottom wall in the planar direction, and a motor unit including the device.

It is a perspective view regarding the control apparatus of embodiment of this invention, and is a perspective view which shows the structure of the motor unit which has the same apparatus. It is sectional drawing regarding the control apparatus of embodiment, and sectional drawing which shows the cross-sectional structure which follows the D2-D2 line | wire of FIG. It is sectional drawing regarding the control apparatus of embodiment, and sectional drawing which shows the cross-sectional structure which follows the D3-D3 line | wire of FIG. The perspective view regarding the circuit board and holding member of embodiment. Sectional drawing regarding the control apparatus of the modification P of embodiment. Sectional drawing regarding the control apparatus of the modification Q of embodiment.

The configuration of the motor unit 1 will be described with reference to FIG.
The motor unit 1 includes an electric motor 10 and a control device 20. Further, the motor unit 1 has a connector 100 (see FIG. 2) in which electric wires for connecting to a power source (not shown) outside the motor unit 1 and an external control device (not shown) are combined.

  The electric motor 10 includes a motor main body 11 and a motor housing 12 that houses the motor main body 11. The motor housing 12 has a cylindrical shape. The motor housing 12 is attached to the housing 90 of the control device 20.

  As shown in FIG. 2, the control device 20 includes a resin module 21, a circuit board 30, a heat radiating member 80, and a housing 90. The resin module 21 includes a bus bar 22 (see FIG. 3) for connecting each circuit element 31 of the circuit board 30 and the electric motor 10. The resin module 21 fixes a part of a relatively large circuit element 31 such as a capacitor element and a coil element among the circuit elements 31 with resin. Thereby, the relatively large circuit element 31 is stably supported.

  The housing 90 has a cylindrical shape. The housing 90 has a bottom wall 91, a side wall 92, an upper wall 93 (see FIG. 3), and an accommodation space 94. The housing 90 is attached to the motor housing 12. The housing 90 accommodates the resin module 21, the circuit board 30, and the heat dissipation member 80.

  The side wall 92 rises from the bottom wall 91 and the top wall 93 (see FIG. 3). The side wall 92 has a cylindrical shape. The accommodation space 94 is formed surrounded by the side walls 92. The side wall 92 has an opening 92A and a module insertion hole 92B (see FIG. 1).

  The opening portion 92 </ b> A is formed in the central portion of the side wall 92 in the axial direction of the housing 90. The opening portion 92 </ b> A is formed in a portion facing the connection terminal 32 of the circuit board 30. The connector 100 is inserted into the housing 90 through the opening 92A. Each electric wire of the connector 100 is connected to each connection terminal 32.

  As shown in FIG. 1, the module insertion hole 92 </ b> B is formed in the vicinity of the bottom wall 91 of the side walls 92. The center in the circumferential direction of the opening portion 92A coincides with the center in the circumferential direction of the module insertion hole 92B. The resin module 21 is inserted into the housing 90 through the module insertion hole 92B.

The circuit board 30 will be described with reference to FIG.
The circuit board 30 extends in a direction of rising from the bottom wall 91 via the resin module 21. The circuit board 30 is arranged along the side wall 92. Hereinafter, the direction in which the circuit board 30 rises with respect to the bottom wall 91 is referred to as “rise direction Y”. Further, a direction perpendicular to the rising direction Y and along the surface of the circuit board 30 in the circuit board 30 is defined as a “width direction X”. The rising direction Y coincides with the axial direction of the housing 90.

  The circuit board 30 includes a board body 40, circuit elements 31 connected to the board body 40, a plurality of connection terminals 32 connected to the board body 40, and a plurality of bus bar terminals 33 connected to the bus bar 22. The plurality of connection terminals 32 and the plurality of bus bar terminals 33 are pins that penetrate the substrate body 40. Each circuit element 31 includes a capacitor element, a relay element, a coil element, an integrated circuit element, and a switching element.

  The circuit board 30 is disposed in the accommodation space 94 (see FIG. 2). The circuit board 30 rises on the bottom wall 91. The substrate body 40 includes a first substrate portion 50, a second substrate portion 60, an intermediate substrate portion 70, a first connection portion 41, and a second connection portion 42. The circuit board 30 is disposed on the resin module 21 in the rising direction Y. That is, the position in the rising direction Y of the circuit board 30 in the accommodation space 94 is positioned by the resin module 21.

  The circuit board 30 is a flexible multilayer printed board. The circuit board 30 has a higher shape holding power than a general flexible board. That is, the circuit board 30 is harder than a general flexible board. In the circuit board 30, the first substrate portion 50, the second substrate portion 60, the intermediate substrate portion 70, the first connection portion 41, and the second connection portion 42 are integrally formed of a continuous thermoplastic resin film. . Specifically, the circuit board 30 is manufactured by a manufacturing method in which a thermoplastic resin film that has been subjected to pattern processing is multilayered by a single hot press. A metal paste is used as the interlayer connection material. An example of this multilayer printed board is PALAP (registered trademark).

The structure of the circuit board 30 will be described in detail with reference to FIG.
The first substrate portion 50 has a first substrate rear surface 51, a first substrate front surface 52, a first upper end portion 53, and a first second end portion 54. The first substrate portion 50 has a square piece shape. The first substrate portion 50 has a width shorter than the radius of the housing 90. A switching element as a power circuit unit is disposed on the first substrate portion 50.

  The first substrate back surface 51 faces the side wall 92. The first substrate portion 50 has a planar shape, and the side wall 92 has a cylindrical shape. For this reason, the central portion of the first substrate back surface 51 and the side wall 92 are separated from each other, and the heat dissipation member 80 is disposed between the first substrate back surface 51 and the side wall 92.

  The first substrate front surface 52 forms a surface opposite to the first substrate back surface 51. The first upper end portion 53 extends in the rising direction Y, and the first upper end portion 53 forms an end portion in the width direction X of the circuit board 30. The first upper end 53 is in contact with the side wall 92. The first end portion 54 extends in the rising direction Y and is adjacent to the first connecting portion 41.

  The second substrate portion 60 has a second substrate back surface 61, a second substrate front surface 62, a second upper end portion 63, and a second second end portion 64. The second substrate portion 60 has a square piece shape. The second substrate portion 60 has a width shorter than the radius of the housing 90. On the second substrate portion 60, an integrated circuit element as a control circuit unit is arranged.

  The second substrate back surface 61 faces the side wall 92. The second substrate portion 60 has a planar shape, and the side wall 92 has a cylindrical shape. For this reason, the center part of the 2nd board | substrate back surface 61 and the side wall 92 are spaced apart, and the space | gap SB is formed.

  The second substrate front surface 62 forms a surface opposite to the second substrate rear surface 61. The second upper end 63 extends in the rising direction Y and forms the end of the circuit board 30. The second upper end 63 is in contact with the side wall 92. The second end portion 64 extends in the rising direction Y and is adjacent to the second connecting portion 42.

  The intermediate board portion 70 has an intermediate board rear surface 71, an intermediate board front surface 72, an intermediate upper end portion 73, and an intermediate second end portion 74. In the intermediate substrate portion 70, a plurality of connection terminals 32 and a plurality of bus bar terminals 33 are arranged. The intermediate substrate portion 70 has a square piece shape. The intermediate substrate portion 70 has a width shorter than the radius of the housing 90. The intermediate substrate portion 70 is located between the first substrate portion 50 and the second substrate portion 60. Each bus bar terminal 33 is arranged closer to the bottom wall 91 than each connection terminal 32.

  The intermediate substrate back surface 71 faces the side wall 92. The intermediate substrate portion 70 has a planar shape, and the side wall 92 has a cylindrical shape. For this reason, the central portion of the intermediate substrate back surface 71 and the side wall 92 are separated from each other to form a gap SC.

  The intermediate substrate front surface 72 forms a surface opposite to the intermediate substrate rear surface 71. The middle upper end 73 extends in the rising direction Y and is adjacent to the first connecting portion 41. The intermediate end portion 74 extends in the rising direction Y and is adjacent to the second connecting portion 42.

  The first connection portion 41 connects the first substrate portion 50 and the intermediate substrate portion 70 to each other. The first connecting portion 41 is bent in a direction in which the first substrate front surface 52 and the intermediate substrate front surface 72 face each other. The first connecting portion 41 contacts the side wall 92.

  The second connection portion 42 connects the second substrate portion 60 and the intermediate substrate portion 70 to each other. The second connecting portion 42 bends in a direction in which the second substrate front surface 62 and the intermediate substrate front surface 72 face each other. The second connecting portion 42 contacts the side wall 92.

  In the circuit board 30, the first connecting part 41 and the second connecting part 42 are bent, so that the first board part 50, the second board part 60, and the intermediate board part 70 are bent according to the shape of the side wall 92. Has a shape. The circuit board 30 has an obtuse angle, that is, a bending angle formed by the first board portion 50 and the intermediate board portion 70.

  The distance between each of the first connecting portion 41 and the second connecting portion 42 and the side wall 92 is such that the central portion in the width direction X of the first substrate portion 50, the central portion in the width direction X of the second substrate portion 60, and the intermediate substrate The distance between each of the central portions in the width direction X of the portion 70 and the side wall 92 is shorter.

The relationship between the circuit board 30 and the heat dissipation member 80 will be described with reference to FIG. In FIG. 4, each circuit element 31 is omitted.
The heat radiating member 80 has a heat radiating member main body 81 and four screws 82. The heat radiating member main body 81 is formed of a metal material. The heat radiating member main body 81 has a main body back surface 81 </ b> A that contacts the side wall 92 (see FIG. 2) and a main body front surface 81 </ b> B that contacts the first substrate back surface 51. The main body back surface 81 </ b> A is formed as an arc surface along the side wall 92. The main body front surface 81B is formed as a flat surface. The four screws 82 connect the heat dissipating member main body 81, the first substrate portion 50, and the side wall 92 (see FIG. 2) together by tightening. Thermal radiation grease is applied to the main body front surface 81B.

The arrangement of the plurality of connection terminals 32 will be described.
The plurality of connection terminals 32 form a first terminal row 32A and a second terminal row 32B in the width direction X. The first terminal row 32A and the second terminal row 32B are aligned in the rising direction Y, respectively. Specifically, each connection terminal 32 constituting the first terminal row 32A has the same center in the width direction X of each connection terminal 32. Each connection terminal 32 constituting the second terminal row 32B has the same center in the width direction X of each connection terminal 32. The alignment in the rising direction Y indicates that the number of connection terminals 32 constituting each terminal row is larger than the number of terminal rows along the rising direction Y.

  Along the width direction X from the end of the connection terminal 32 closest to the first substrate portion 50 on the first substrate portion 50 side to the end of the connection terminal closest to the second substrate portion 60 on the second substrate portion 60 side. The size LX is in the rising direction Y from the end on the bottom wall 91 side of the connection terminal 32 closest to the bottom wall 91 to the end on the side farthest from the bottom wall 91 of the connection terminal 32 farthest from the bottom wall 91. It is smaller than the size LY along.

The operation of the circuit board 30 will be described.
The plurality of connection terminals 32 have a first terminal row 32A and a second terminal row 32B aligned in the rising direction Y. For this reason, compared with the structure which a terminal row | line | column aligns in the width direction X, the magnitude | size LX along the width direction X of the some connecting terminal 32 can be made small. That is, the width of the intermediate substrate portion 70 can be reduced.

The motor unit 1 of this embodiment has the following effects.
(1) The circuit board 30 of the control device 20 is disposed in the accommodation space 94 in a state of rising on the bottom wall 91, and the first substrate portion 50, the second substrate portion 60, and the intermediate substrate portion 70 are disposed on the side wall 92. It is bent according to the shape. For this reason, the dimension of the circuit board 30 in the planar direction of the bottom wall 91 becomes small. For this reason, it is possible to reduce the size of the control device 20 in the planar direction of the bottom wall 91.

  (2) Since the circuit board 30 of the control device 20 has the connection terminal 32 in the intermediate board part 70, the circuit board 30 is compared with the configuration assumed that the connection terminal 32 is formed in the first board part 50 or the second board part 60. Thus, the difference between the length from the element of the first substrate portion 50 to the connection terminal 32 and the length from the element of the second substrate portion 60 to the connection terminal 32 is reduced. For this reason, the distance from the connection terminal 32 can be made small with respect to both the circuit element 31 arranged on the first substrate portion 50 and the circuit element 31 arranged on the second substrate portion 60.

  (3) Since the circuit board 30 has an obtuse angle as the bending angle of the first board part 50 and the intermediate board part 70, compared with the case where the bending angle of the first board part 50 and the intermediate board part 70 has an acute angle, The circuit elements 31 can be easily arranged in the vicinity of the first connection portion 41 and the second connection portion 42.

  (4) The intermediate substrate portion 70 has a plurality of connection terminals 32. The plurality of connection terminals 32 are aligned in the rising direction Y. For this reason, the width of the intermediate substrate portion 70 can be reduced as compared with a configuration in which a plurality of terminals are assumed to be aligned in the width direction X of the intermediate substrate portion 70.

  The smaller the width of the intermediate board portion 70, the closer the circuit board 30 can be to the side wall 92. For this reason, a large space for placing other components in the housing space 94 of the housing 90 can be secured.

  (5) Since the side wall 92 of the control device 20 has the opening portion 92A in the portion facing the connection terminal 32, compared with the configuration assumed to have the opening portion 92A in the other portion of the side wall 92 or the bottom wall 91. Wiring with external parts is simplified.

  (6) Since the circuit board 30 of the control device 20 is integrally formed of a continuous thermoplastic resin film, the first substrate portion 50, the second substrate portion 60, and the intermediate substrate portion 70 are connected to the side wall 92. It can be easily bent according to the shape.

  (7) In the control device 20, the distance between each of the first connection portion 41 and the second connection portion 42 and the side wall 92 is such that the center portion in the width direction of the first substrate portion 50 and the width direction of the second substrate portion 60. Shorter than the distance between the side wall 92 and each of the central portion of the intermediate substrate portion 70 and the central portion of the intermediate substrate portion 70 in the width direction. For this reason, the space | interval of each of the 1st board | substrate part 50, the 2nd board | substrate part 60, and the intermediate board | substrate part 70, and the side wall 92 becomes small. For this reason, a large space for placing other components in the housing space 94 of the housing 90 can be secured.

  (8) In the control device 20, since the housing 90 has a cylindrical shape, it is difficult to arrange other components between the side wall 92 and the circuit board 30. On the other hand, in the control device 20, based on this point, the widths of the first substrate portion 50, the second substrate portion 60, and the intermediate substrate portion 70 are made shorter than the radius of the housing 90. For this reason, the circuit board 30 and the side wall 92 are compared with the configuration in which at least one width of the first board portion 50, the second board portion 60, and the intermediate board portion 70 is assumed to be longer than the radius of the housing 90. The space between them becomes smaller. That is, the space in which it is difficult to place components is reduced. For this reason, it becomes possible to arrange | position various components in the accommodation space 94 of the housing 90 efficiently.

  (9) Since the control device 20 has a heat dissipation member between at least one of the first substrate portion 50 and the second substrate portion 60 and the side wall 92, the heat of the circuit board 30 moves to the heat dissipation member. For this reason, the temperature rise of the circuit board 30 is suppressed.

  (10) The center in the circumferential direction of the opening 92A and the center in the circumferential direction of the module insertion hole 92B coincide. Thereby, it becomes easy to combine the electric wire of the connector 100 and the electric wire taken out from the resin module 21 inside the housing 90.

  The present invention includes embodiments other than the above-described embodiment. Hereinafter, the modification of the said embodiment as other embodiment of this invention is shown. The following modifications can be combined with each other.

  The housing 90 of the embodiment has a cylindrical shape. On the other hand, as shown in FIG. 5, the housing 90 of the modified example P has a hexagonal cylindrical shape. In the modified example P, the circuit board 30 has the bending angle of the first connecting portion 41 and the second connecting portion 42 matched to the inner angle of the side wall 192. Further, the first substrate back surface 51, the second substrate back surface 61, and the intermediate substrate back surface 71 are in contact with the inner peripheral surface of the side wall 92. For this reason, the heat dissipation member 80 is omitted.

  In the embodiment, the plurality of connection terminals 32 constitute a first terminal row 32A and a second terminal row 32B. On the other hand, as shown in FIG. 6, the plurality of connection terminals 32 of the modified example Q constitute only the first terminal row 132A. That is, the centers of all the connection terminals 32 in the width direction X coincide.

In the embodiment, the plurality of connection terminals 32 are aligned in the rising direction Y. On the other hand, the plurality of connection terminals 32 of Modification R are aligned in the width direction X.
In the embodiment, the plurality of connection terminals 32 are aligned. On the other hand, the plurality of connection terminals 32 of the modified example S are arranged on the intermediate substrate portion with the centers in the width direction X not matching.

In the modification example R and the modification example S, the plurality of connection terminals 32 can be arranged in a state where the size LX shown in FIG. 4 is larger than the size LY shown in FIG.
In the embodiment, the plurality of connection terminals 32 are pins that penetrate the substrate body 40. On the other hand, at least one of the plurality of connection terminals 32 of the modification is a through hole. In this case, the connector 100 has a pin terminal for penetrating the through hole.

  In the control device 20 of the embodiment, the heat dissipation member 80 is disposed between the first substrate portion 50 and the side wall 92. On the other hand, in the control device 20 of the modified example, a heat radiation member 80 is disposed between the second substrate portion 60 and the side wall 92 instead of or in addition to this.

-The control apparatus 20 of embodiment has the heat radiating member 80. FIG. On the other hand, the heat-dissipating member 80 is omitted from the control device 20 of the modified example.
The screw 82 of the embodiment connects the heat radiating member main body 81, the first substrate portion 50, and the side wall 92 together by fastening together. On the other hand, the screw 82 of the modified example T connects the heat dissipation member main body 81 and the first substrate portion 50 to each other.

  In the control device 20 of the modified example T, a recess corresponding to the shape of the heat dissipation member main body 81 can be formed on the inner peripheral surface of the side wall 92. The circuit board 30 is supported by the side wall 92 through the heat dissipation member main body 81 by fitting the heat dissipation member 81 main body into the recess.

  In the circuit board 30 of the embodiment, the first board part 50, the second board part 60, and the intermediate board part 70 have a width shorter than the radius of the housing 90. On the other hand, in the circuit board 30 of the modified example, at least one of the first board part 50, the second board part 60, and the intermediate board part 70 has a width longer than the radius of the housing 90.

  In the control device 20 of the embodiment, the distance between each of the first connection portion 41 and the second connection portion 42 and the side wall 92 is such that the center portion in the width direction X of the first substrate portion 50 and the width of the second substrate portion 60 The distance between the central portion in the direction X and the central portion in the width direction X of the intermediate substrate portion 70 and the side wall 92 is shorter. On the other hand, in the control device 20 of the modified example, the distance between each of the first connecting portion 41 and the second connecting portion 42 and the side wall 92 is such that the center portion in the width direction X of the first substrate portion 50 and the second substrate portion 60 Each of the central portion in the width direction X and the central portion in the width direction X of the intermediate substrate portion 70 is longer than at least one of the distances between the side walls 92.

  The control device 20 according to the embodiment includes the circuit board 30 that is discontinuous in the direction along the side wall 92. On the other hand, the control device 20 of the modification has a circuit board 30 that is continuous in the direction along the side wall 92. That is, both ends of the substrate body 40 in the width direction come into contact. In this case, the circuit board 30 has a triangular shape.

  In the control device 20 of the embodiment, the bending angle of the first substrate portion 50 and the intermediate substrate portion 70 is an obtuse angle. On the other hand, in the control device 20 of the modified example, the bending angle of the first substrate portion 50 and the intermediate substrate portion 70 is a right angle or an acute angle.

  In the control device 20 of the embodiment, the bending angle of the second substrate portion 60 and the intermediate substrate portion 70 has an obtuse angle. On the other hand, in the control device 20 of the modified example, the bending angle of the second substrate portion 60 and the intermediate substrate portion 70 is a right angle or an acute angle.

-The control apparatus 20 of embodiment has the 1st board | substrate part 50 of a planar shape. On the other hand, in the control device 20 of the modified example, the first substrate portion 50 is bent one or more times.
-The control apparatus 20 of embodiment has the 2nd board | substrate part 60 of a planar shape. On the other hand, in the control device 20 of the modified example, the second substrate portion 60 bends once or more.

  In the circuit board 30 of the embodiment, the first board part 50, the second board part 60, and the intermediate board part 70 have a square piece shape. On the other hand, in the circuit board 30 of the modified example, at least one of the first board part 50, the second board part 60, and the intermediate board part 70 has a triangular shape, a pentagonal or higher polygonal shape, or an elliptical shape.

  -The control apparatus 20 of embodiment has the intermediate | middle board | substrate part 70 of a planar shape. On the other hand, the control device 20 of the modified example has an intermediate substrate portion 70 that is curved. In this case, the first substrate portion 50 and the second substrate portion 60 may be general rigid substrates, and the intermediate substrate portion 70 may be a general flexible substrate.

  -The control apparatus 20 of embodiment has the circuit board 30 with a high shape retention power compared with a general flexible substrate. On the other hand, the control device 20 of the modified example has a circuit board 30 as a general flexible board.

  In the control device 20 of the embodiment, the resin module 21 is disposed between the bottom wall 91 and the circuit board 30. On the other hand, the control device 20 of the modified example can also arrange the resin module 21 between the upper wall 93 and the circuit board 30. In this modification, the bottom wall 91 and the circuit board 30 are in direct contact.

-The control apparatus 20 of embodiment has the resin module 21. FIG. On the other hand, the resin module 21 is omitted from the control device 20 of the modified example.
The housing 90 according to the embodiment has an opening 92 </ b> A at a portion facing the connection terminal 32 of the side wall 92. On the other hand, the housing 90 of the modified example has an opening portion 92 </ b> A in a portion of the side wall 92 that does not face the connection terminal 32, the bottom wall 91, or the upper wall 93.

  -The housing 90 of embodiment has the opening part 92A. On the other hand, in the modified housing 90, the opening portion 92A is omitted, and the connector 100 is inserted from the module insertion hole 92B.

The housing 90 of the embodiment has an upper wall 93. On the other hand, the upper housing 93 is omitted from the housing 90 of the modified example.
The housing 90 of the embodiment is attached to the motor housing 12. On the other hand, the modified housing 90 is not attached to the motor housing 12.

  The control device 20 of the embodiment can be mounted as a control device other than the electric motor 10. In short, the present invention can be applied to the control device of any device as long as the control device includes a bottom wall, a side wall rising from the bottom wall, and a housing having an accommodation space formed surrounded by the side wall. it can.

  DESCRIPTION OF SYMBOLS 1 ... Motor unit, 10 ... Electric motor, 20 ... Control apparatus, 30 ... Circuit board, 31 ... Circuit element, 32 ... Connection terminal, 41 ... 1st connection part, 42 ... 2nd connection part, 50 ... 1st board part , 51 ... back surface of the first substrate, 52 ... front surface of the first substrate, 53 ... first end portion, 54 ... first end portion, 60 ... second substrate portion, 61 ... back surface of the second substrate, 62 ... second substrate Front surface, 63 ... Second upper end portion, 64 ... Second end portion, 70 ... Intermediate substrate portion, 71 ... Intermediate substrate rear surface, 72 ... Intermediate substrate front surface, 73 ... Intermediate upper end portion, 74 ... Intermediate end portion, 80 ... Heat dissipation member, 90 ... Housing, 91 ... Bottom wall, 92 ... Side wall, 92A ... Open portion, 94 ... Accommodating space.

Claims (11)

A control device having a housing and a circuit board,
The housing has a bottom wall, a side wall rising from the bottom wall, and a receiving space formed surrounded by the side wall,
The circuit board is a board that is disposed in the housing space and rises on the bottom wall, and is located between the first board part, the second board part, and the first board part and the second board part. An intermediate substrate portion; a first connection portion for connecting the first substrate portion and the intermediate substrate portion to each other; and a second connection portion for connecting the second substrate portion and the intermediate substrate portion to each other; The first connection part, the second connection part, and the intermediate substrate part are bent in accordance with the shape of the side wall by bending the first connection part and the second connection part, A control device having a connection terminal for connecting to an external component in the intermediate substrate portion. The control device according to claim 1, wherein the circuit board has a right angle or an obtuse angle as a bending angle of the first board portion and the intermediate board portion. The intermediate substrate portion has a plurality of the connection terminals,
The control device according to claim 1, wherein the plurality of connection terminals are aligned in a rising direction that is a direction in which the circuit board rises with respect to the bottom wall. The control device according to claim 1, wherein the side wall has an opening in a portion facing the connection terminal. The first substrate portion, the second substrate portion, the intermediate substrate portion, the first connection portion, and the second connection portion are integrally formed of a continuous thermoplastic resin film. The control device according to any one of the above. The housing has a cylindrical shape;
The circuit board includes the square piece-shaped first substrate portion, the square piece-shaped second substrate portion, and the square piece-shaped intermediate substrate portion, wherein the first connection portion and the second connection portion The distance between each of the side wall and the side wall is a center portion in the width direction of the first substrate portion, a center portion in the width direction of the second substrate portion, and a center portion in the width direction of the intermediate substrate portion, and the side wall. The control device according to claim 1, wherein the control device is shorter than the distance. The control device according to claim 6, wherein the first substrate portion, the second substrate portion, and the intermediate substrate portion have a width shorter than a radius of the housing. The control device according to any one of claims 1 to 7, wherein the control device includes a heat dissipation member between at least one of the first substrate portion and the second substrate portion and the side wall. The first substrate portion is a first substrate rear surface facing the side wall, a first substrate front surface forming a surface opposite to the first substrate rear surface, and a direction in which the circuit board stands up with respect to the bottom wall. A first upper end extending in the rising direction, and a first second end extending in the rising direction and adjacent to the first connecting portion;
The second substrate portion includes a second substrate rear surface facing the side wall, a second substrate front surface forming a surface opposite to the second substrate rear surface, a second upper end extending in the rising direction, and the A second end portion extending in the rising direction and adjacent to the second connecting portion;
The intermediate substrate portion includes an intermediate substrate rear surface facing the side wall, an intermediate substrate front surface forming a surface opposite to the intermediate substrate rear surface, an intermediate upper end extending in the rising direction and adjacent to the first connecting portion. And an intermediate end portion that extends in the rising direction and is adjacent to the second connecting portion,
The first connecting portion is bent in a direction in which the front surface of the first substrate and the front surface of the intermediate substrate face each other;
The control device according to any one of claims 1 to 8, wherein the second connection portion is bent in a direction in which the front surface of the second substrate and the front surface of the intermediate substrate face each other. In the circuit board, one end of the first substrate part forms one end of the circuit board, and one end of the second board part forms the other end of the circuit board. The control device according to any one of claims 1 to 9, wherein one end of the circuit board and the other end of the circuit board have a discontinuous relationship.   The motor unit which has an electric motor and the control apparatus as described in any one of Claims 1-10.