JP2013187992A - Electric motor control device and vehicle steering apparatus including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: an electric motor control device that facilitates downsizing; and a vehicle steering apparatus including the same.SOLUTION: Bus bars 31-33 are connected to each other by a connection member 41. A plurality of insertion holes 45 and 46 that are opened in a socket part 44 and permit insertion of plug terminals 31a and 32a are formed in a holding part 42 of a module holder 38. The bus bars 31-33 having circuit components 34-37 connected thereto are fixed to the module holder 38 by a fixing screw 47 in a state that the plug terminals 31a and 32a are respectively disposed via the insertion holes 45 and 46 at predetermined positions in the socket part 44.

Description

  The present invention relates to an electric motor control device and a vehicle steering device including the same.

  2. Description of the Related Art Conventionally, in an electric motor control device used for a vehicle steering device or the like, a circuit board on which a control circuit for outputting a control signal and a drive circuit for supplying a drive current to the electric motor based on the control signal are formed, and the circuit. And a connector module provided with a connector portion for electrically connecting the substrate to a power source (battery) (for example, Patent Document 1). In general, such a connector module has a plurality of bus bars made of a metal material and a module holder made of an insulating resin material, and the bus bar and the module holder are integrally provided by insert molding. The bus bar is embedded in the module holder so that the plug terminal is disposed at a predetermined position in the receiving port formed in the module holder, and the connector unit is configured by the receiving port and the plug terminal. .

  In addition, since such a control device is required to be downsized, an area (mounting area) on which a circuit component can be mounted on a circuit board is limited. Therefore, in many cases, relatively large circuit components such as capacitors and coils are not directly mounted on the circuit board, but are joined to the exposed portion of the bus bar integrated with the module holder by resistance welding, TIG welding, or the like. Thus, it is connected to the circuit board via the bus bar and is held by the module holder.

JP 2009-247139 A

  By the way, in resistance welding, a bus bar and a connection terminal of a circuit component are sandwiched between a pair of welding electrodes and joined together, so that a space in which the welding electrode can be inserted in the vicinity of the joint location of the circuit component in the module holder is secured. There is a need. Moreover, in TIG welding, since a joining part becomes high temperature by discharge, it is necessary to ensure sufficient space near the joining part of the circuit components in the module holder so that the module holder is not deteriorated by heat. As described above, in the conventional configuration, since the circuit component is joined to the bus bar integrated with the module holder, it is necessary to secure a large space in the vicinity of the joint portion between the bus bar and the circuit component in the module holder. Therefore, there is a problem that it is difficult to reduce the size of the module holder, and consequently it is difficult to reduce the size of the control device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric motor control device that can be easily reduced in size and a vehicle steering device including the same. is there.

  In order to achieve the above object, the invention according to claim 1 is a circuit board on which a control circuit for outputting a control signal and a drive circuit for supplying a drive current to an electric motor based on the control signal are formed, and the circuit board. A connector module provided with a connector portion for connecting the power source to the power source, the connector module having a plurality of bus bars for connecting the circuit board and the power source, a plurality of connection terminals, and via the bus bar. A circuit component connected to the circuit board, and a module holder that holds the bus bar and the circuit component and has a receiving port portion that opens to the outside, and the connector portion includes the receiving port portion and the receiving port. In the control device for an electric motor configured by plug terminals of the bus bar arranged at predetermined positions in the unit, the plurality of buses The module holder is formed with a plurality of insertion holes that are opened in the receiving port portion and into which the plug terminals are inserted, and the bus bar has the plug terminals connected to the insertion holes. The gist is to be fixed to the module holder by a fixing member in a state of being disposed at the predetermined position in the receptacle.

  According to the above configuration, the bus bars are connected to each other by the connecting member, so that the relative positional relationship is maintained. Therefore, it is possible to join the plurality of connection terminals of the circuit components to the corresponding bus bars by connecting the bus bars with the connecting members. Then, the bus bar to which the circuit components are joined is assembled to the module holder so that the plug terminal is arranged at a predetermined position in the receiving port, and is fixed by a fixing member to constitute a connector module.

  Here, since the bus bar and the circuit component are held by the module holder, the connecting member only needs to be able to perform relative positioning between the bus bars. Therefore, the connecting member can be formed small, and the connecting member can be easily disposed at a position away from the vicinity of the connection terminal of the circuit element. Thereby, when joining a circuit component to a bus-bar, it can suppress that a connection member obstructs the electrode for welding, and to deteriorate by the influence of the heat by discharge. And since the bus bar in the state where the circuit components are joined is assembled to the module holder, it is not necessary to secure a large space near the connection terminals of the circuit components in the module holder. Therefore, the connector module can be easily downsized and the control device can be downsized.

  According to a second aspect of the present invention, in the electric motor control device according to the first aspect, the bus bar includes both an insertion direction of the plug terminal into the insertion hole and an arrangement direction orthogonal to the insertion direction. It is fixed to the module holder by the fixing member from a perpendicular direction, and the module holder abuts on any one of the plurality of bus bars, so that the inside of the receiving part is The gist is that a positioning portion for positioning the plug terminal in the insertion direction and the arrangement direction is formed.

  According to the above-described configuration, the plug bar can be easily positioned in the insertion port portion and in the arrangement direction by bringing the bus bar into contact with the positioning portion. In addition, positioning of the plug terminal in the height direction in the receptacle is made by fixing the bus bar to the module holder with a fixing member.

  According to a third aspect of the present invention, in the electric motor control device according to the second aspect, the module holder is brought into contact with any one of the plurality of bus bars, so An auxiliary positioning portion for positioning the plug terminal in the insertion direction is formed.

  According to the above configuration, since the plug terminal is positioned in two places in the insertion direction, the bus bar to which the circuit component is joined can be prevented from being tilted with the positioning portion as a fulcrum. As a result, the plug terminal can be accurately positioned in the receptacle.

The gist of the invention described in claim 4 is a vehicle steering apparatus including the electric motor control device according to any one of claims 1 to 3.
According to the above configuration, since the control device can be downsized, it is possible to provide a vehicle steering device that is excellent in mountability and the like.

  ADVANTAGE OF THE INVENTION According to this invention, the control apparatus of the electric motor which can be reduced in size easily, and the steering apparatus for vehicles provided with the same can be provided.

The schematic block diagram of the steering apparatus for vehicles. The partial cross section figure which shows schematic structure of an EPS actuator. The partial cross section figure which shows the connector module of one Embodiment. The expanded side view which shows the connector part vicinity of the connector module of one Embodiment. The expanded sectional view showing the connector part neighborhood of the connector module of one embodiment. (A) is a top view which shows the state which connected the bus bar of one Embodiment by the connection member, (b) is a top view which shows the state which joined the circuit component to the bus bar similarly. The expanded sectional view which shows the connector part vicinity of the connector module of another example. (A) is a top view which shows the state which connected the bus-bar of another example with the connection member, (b) is AA sectional drawing of (a).

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, in the vehicle steering apparatus 1, a steering shaft 3 to which a steering wheel 2 is fixed is connected to a rack shaft 5 via a rack and pinion mechanism 4. Thereby, the rotation of the steering shaft 3 accompanying the steering operation is converted into a reciprocating linear motion of the rack shaft 5 by the rack and pinion mechanism 4. The steering shaft 3 is formed by connecting a column shaft 8, an intermediate shaft 9, and a pinion shaft 10. Then, the reciprocating linear motion of the rack shaft 5 accompanying the rotation of the steering shaft 3 is transmitted to the knuckle (not shown) via the tie rods 11 connected to both ends of the rack shaft 5, thereby the steering angle of the steered wheels 12, That is, the traveling direction of the vehicle is changed.

  In addition, the vehicle steering apparatus 1 includes an EPS actuator (steering force assisting device) 13 that applies an assist force for assisting a steering operation to the steering system. The vehicle steering apparatus 1 according to the present embodiment is configured as a so-called column-type electric power steering apparatus that rotationally drives the column shaft 8, and an electric motor 14 that is a drive source of the EPS actuator 13 is a deceleration of a worm & wheel or the like. It is drivingly connected to the column shaft 8 via a mechanism 15. The rotation of the electric motor 14 is decelerated by the speed reduction mechanism 15 and transmitted to the column shaft 8 so that the motor torque is applied as an assist force to the steering system.

  As shown in FIG. 2, in the EPS actuator 13, a control device that controls the operation of the electric motor 14 between the electric motor 14 and a gear housing 16 that houses a speed reduction mechanism 15 (not shown in FIG. 2). 21 is provided. That is, the EPS actuator 13 of the present embodiment has a so-called electromechanical integrated structure in which the electric motor 14 and the control device 21 are integrated.

  The control housing 22 of the control device 21 includes a bottomed cylindrical housing main body 23 that opens on the gear housing 16 side, and a base 24 that closes the opening of the housing main body 23. The housing body 23 is fixed to the electric motor 14, and the base 24 is fixed to the gear housing 16. The control housing 22 has a circuit board 25 on which a control circuit for outputting a control signal and a drive circuit for supplying a drive current to the electric motor 14 based on the control signal are formed, and a power supply B (see FIG. 3). And a connector module 26 for connection to the housing. Then, power is supplied from the power source B to the circuit board via the connector module 26, and power is supplied from the drive circuit to the electric motor 14 via a connection line (not shown), so that the electric motor 14 is driven. ing. The housing body 23, the base 24, the circuit board 25, and the connector module 26 are formed with through holes 23a to 26a through which the rotation shaft 28 of the electric motor 14 is inserted.

Next, the configuration of the connector module will be described.
As shown in FIGS. 2 and 3, the connector module 26 includes a plurality of bus bars 31 to 33 that connect the circuit board 25 and the power source B, and circuit components 34 that are connected to the circuit board 25 via the bus bars 31 to 33. -37 and the module holder 38 holding the bus bars 31-33. The bus bars 31 to 33 are made of a metal material, and the module holder 38 is made of an insulating resin material. The connector module 26 is provided with a connector portion 39 to which a power connector Ba extending from the power source B is connected.

  More specifically, the bus bars 31 to 33 are each formed in a band shape. The bus bars 31 and 32 are respectively formed with plug terminals 31a and 32a extending from one end thereof (upper end in FIG. 3), and the plug terminals 31a and 32a are connected to terminals (not shown) of the power connector Ba. It has become so. The bus bars 31 to 33 are connected to each other by a plurality of (two in the present embodiment) connecting members 41 in a state in which the relative positioning is performed. In addition, the connection member 41 of this embodiment consists of an insulating resin material, and has the minimum magnitude | size required in order to hold | maintain the relative positional relationship of the bus bars 31-33 connected.

  The circuit components 34 to 37 are relatively large components such as capacitors and coils, for example, and each have two connection terminals 34a to 37a. The circuit components 34 to 37 are joined to the corresponding bus bars 31 to 33 by resistance welding, TIG welding, or the like. Specifically, the connection terminal 34a of the circuit component 34 is connected to the bus bar 31 and the bus bar 32, the connection terminal 35a of the circuit component 35 is connected to the bus bar 32 and the bus bar 33, and the connection terminal 36a of the circuit component 36. The connection terminals 37a of the circuit component 37 are connected to the bus bar 31 and the bus bar 33, respectively.

  The module holder 38 has a rectangular box-shaped holding portion 42 that opens to the circuit board 25 side (the upper side in FIG. 2), and a rectangular tube-shaped receiving portion 44 that is provided on the side wall portion 43 of the holding portion 42. . The through hole 26 a is formed at the approximate center of the holding portion 42. The side wall 43 is formed with a plurality of (two in this embodiment) insertion holes 45, 46 communicating with the inside of the holding part 42 and the receiving part 44. The plug terminals 31a and 32a of 31 and 32 are inserted. As shown in FIGS. 3 and 4, the insertion holes 45 and 46 are formed with a gap in a direction perpendicular to the insertion direction of the plug terminals 31 a and 32 a into the insertion holes 45 and 46 (hereinafter, the arrangement direction). Yes.

  The bus bars 31 to 33 to which the circuit components 34 to 37 are joined have the opening of the holding portion 42 in a state where the plug terminals 31a and 32a are arranged at predetermined positions in the receiving portion 44 through the insertion holes 45 and 46, respectively. It fixes to the module holder 38 with the fixing screw 47 as a fixing member from the direction to perform, ie, the direction orthogonal to the insertion direction and the arrangement direction (hereinafter, the height direction). Specifically, the bus bars 31 to 33 to which the circuit components 34 to 37 are joined are fixed to the module holder 38 by fixing screws 47 provided near the plug terminals 31a and 32a of the bus bars 31 and 32. The plug terminals 31a and 32a and the receiving port 44 constitute the connector part 39.

Next, a configuration for positioning the plug terminal in the receptacle will be described.
As shown in FIG. 4, the opening shape of the insertion holes 45 and 46 on the receiving port 44 side is formed in a rectangular shape slightly larger than the cross-sectional shape of the plug terminals 31 a and 32 a. The insertion holes 45 and 46 are formed such that the plug terminals 31a and 32a are positioned in the receiving portion 44 in the height direction when the plug terminals 31a and 32a are in close contact with the lower surfaces 45a and 46a. ing. The lower surfaces 45a and 46a are formed flush with the bottom surface of the holding portion 42.

  As shown in FIG. 5, the plug terminal 31 a has a width in the arrangement direction smaller than the other part of the bus bar 31, and the bus bar 31 has one end on the opposite side to the bus bar 32 (left side in FIG. 5). A protruding corner portion 31b is formed. The plug terminal 32a is formed to have a smaller width in the arrangement direction than the other parts of the bus bar 32, and one end of the bus bar 32 has a corner 32b that protrudes on the opposite side (right side in FIG. 5) from the bus bar 31. Is formed. And the corner | angular parts 31b and 32b are each formed in the right-angled shape which has a surface parallel to an insertion direction and an arrangement direction.

  The side wall 43 is formed with a positioning recess 51 that opens on the inner surface 43 a of the side wall 43 and the side surface 45 b of the insertion hole 45 opposite to the insertion hole 46. The positioning recess 51 is formed so that the corner 31b of the bus bar 31 can be inserted. The corner 31b abuts against the bottom surface 51a and the side surface 51b of the positioning recess 51, whereby the plug terminals 31a and 32a in the receiving port 44 are formed. It is formed so as to be positioned in the insertion direction and the arrangement direction. That is, in the present embodiment, the positioning recess 51 functions as a positioning portion.

  Specifically, the bottom surface 51a of the positioning recess 51 is formed in a planar shape orthogonal to the insertion direction. The side surface 51b is continuous with the bottom surface 51a and has an orthogonal surface 52 formed in a planar shape orthogonal to the arrangement direction, and the width of the positioning recess 51 in the arrangement direction increases from the orthogonal surface 52 to the inner side surface 43a of the side wall portion 43. The taper surface 53 is inclined so as to expand. A slight gap is formed between the bus bar 31 and the side surface 45c of the insertion hole 45 on the insertion hole 46 side, and between the plug terminal 31a and the side surfaces 45b and 45c.

  The side wall 43 is formed with an auxiliary recess 54 that opens on the side surface 46 b of the inner side surface 43 a and the insertion hole 46 opposite to the insertion hole 45. The auxiliary recess 54 is formed so that the corner portion 32b of the bus bar 32 can be inserted, and the insertion direction of the plug terminals 31a and 32a in the receiving port portion 44 when the corner portion 32b contacts the bottom surface 54a of the auxiliary recess portion 54. It is formed to be positioned. That is, in this embodiment, the auxiliary recess 54 functions as an auxiliary positioning portion.

  Specifically, the bottom surface 54a of the auxiliary recess 54 is formed in a planar shape orthogonal to the insertion direction. Further, the side surface 54 b is continuous with the bottom surface 54 a and is formed in a plane shape orthogonal to the arrangement direction, and the side surface 54 b is arranged in the arrangement direction of the auxiliary recesses 54 as it approaches the inner side surface 43 a of the side wall portion 43 from the orthogonal surface 55. It consists of a tapered surface 56 that is inclined so that its width increases. A slight gap is formed between the bus bar 32 and the side surface 46c and the side surface 46b on the insertion hole 45 side in the insertion hole 46, and between the plug terminal 32a and the side surfaces 46b and 46c.

Next, manufacture of a connector module (control device) will be described.
As shown in FIG. 6A, first, the bus bars 31 to 33 are punched out from a steel plate or the like by press working, the bus bars 31 to 33 are relatively positioned, and the connecting member 41 is integrally provided by insert molding or the like. Thereby, since the relative positional relationship between the bus bars 31 to 33 is maintained, the plurality of connection terminals 34 a to 37 a of the circuit components 34 to 37 correspond respectively by connecting the bus bars 31 to 33 by the connecting member 41. It becomes possible to join to the bus bars 31-33. The bus bars 31 to 33 may be punched out in a state where they are separated from the steel plate, or may be punched out by pressing or the like in a state where they are connected to each other from the steel plate, and then cut off after the connecting member 41 is insert-molded.

  Subsequently, as illustrated in FIG. 6B, the connection terminals 34 a to 37 a of the circuit components 34 to 37 are joined to the corresponding bus bars 31 to 33 by resistance welding, TIG welding, or the like. Subsequently, the circuit components 34 to 37 are joined such that the corner 31b of the bus bar 31 contacts the bottom surface 51a and the orthogonal surface 52 of the positioning recess 51 and the corner 32b of the bus bar 32 contacts the bottom surface 54a of the auxiliary recess 54. The bus bars 31 to 33 thus assembled are assembled to the module holder 38. Accordingly, the plug terminals 31a and 32a are positioned in the receiving port portion 44 in the insertion direction and the arrangement direction. Then, the bus bars 31 and 32 are fixed to the holding portion 42 of the module holder 38 with the fixing screw 47. As a result, the plug terminals 31a and 32a are positioned in the height direction in the receptacle 44, and the connector module 26 is manufactured. Thereafter, the bus bars 31 to 33 of the connector module 26 are connected to the circuit board 25 and accommodated in the control housing 22, whereby the control device 21 is manufactured.

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) With the bus bars 31 to 33 connected by the connecting member 41 and joined with the circuit components 34 to 37, the plug terminals 31a and 32a are arranged at predetermined positions in the receiving port portion 44 through the insertion holes 45 and 46, respectively. In this state, the module holder 38 was fixed with a fixing screw 47.

  Since the bus bars 31 to 33 and the circuit components 34 to 37 are held by the module holder 38 as described above, the connecting member 41 is formed to a minimum size that can hold the relative positional relationship between the bus bars 31 to 33. Has been. Therefore, the connecting member 41 can be easily arranged at a position away from the vicinity of the connection terminals 34 a to 37 a of the circuit components 34 to 37. Thereby, when joining the circuit components 34-37 to the bus-bars 31-33, the connection member 41 becomes the obstruction of the electrode for welding used for resistance welding, and the influence of the heat by the discharge at the time of performing TIG welding. Deterioration can be suppressed. Since the bus bars 31 to 33 with the circuit components 34 to 37 connected thereto are assembled to the module holder 38, a large space is not secured in the vicinity of the connection terminals 34a to 37a of the circuit components 34 to 37 in the module holder 38. Get better. Therefore, the connector module 26 can be easily reduced in size, so that the control device 21 can be reduced in size, and the vehicle steering apparatus 1 excellent in mountability and the like can be provided.

  (2) Positioning that positions the plug terminals 31a and 32a in the insertion holes 45 and 46 in the receiving port portion 44 in the insertion direction 45 and the arrangement direction by contacting the module holder 38 with the corner portion 31b of the bus bar 31. A recess 51 was formed. Therefore, when the corner portion 31 b of the bus bar 31 is brought into contact with the positioning recess 51, the plug terminal can be easily positioned in the receiving port portion 44 in the insertion direction and the arrangement direction.

  (3) The module holder 38 is formed with the auxiliary recess 54 for positioning the plug terminals 31a and 32a in the insertion portion 44 in the insertion direction by contacting the corner 32b of the bus bar 32. Therefore, the corner 31b of the bus bar 31 abuts on the positioning recess 51, and the corner 32b of the bus bar 32 abuts on the auxiliary recess 54, so that the plug terminals 31a and 32a are inserted in the receiving portion 44 at two locations. Is now positioned. Therefore, the bus bars 31 to 33 connected by the connecting member 41 can be prevented from being tilted with the positioning recess 51 as a fulcrum, and the plug terminals 31a and 32a can be accurately positioned in the receiving port 44.

  (4) Since the tapered surface 53 is provided on the side surface 51 b of the positioning recess 51 and the tapered surface 56 is provided on the side surface 54 b of the auxiliary recess 54, the plug terminals 31 a and 32 a can be easily inserted into the insertion holes 45 and 46.

In addition, the said embodiment can also be implemented in the following aspects which changed this suitably.
In the above embodiment, the bus bars 31 and 32 are directly fixed to the module holder 38 with the fixing screw 47. However, the present invention is not limited to this. For example, as shown in FIG. 7, the bus bars 31 and 32 are sandwiched between the module holder 38 by a plate-like pressing member 62 fixed to the module holder 38 by a fixing screw 61. The bus bars 31 to 33 to which the circuit components 34 to 37 are joined may be fixed to the module holder 38. In this case, the fixing screw 61 and the pressing member 62 correspond to the fixing member.

  In the above embodiment, the bus bars 31 to 33 are integrally provided with the connecting member 41 and fixed to the connecting member 41 by insert molding. However, the present invention is not limited to this. For example, the connecting member 41 may be separately formed, and the bus bars 31 to 33 may be fixed to the connecting member 41 with screws, adhesives, or the like. Further, for example, as shown in FIGS. 8A and 8B, a fixing hole 71 is formed in the connecting member 41, and bus bars 31 to 33 are inserted into the fixing hole 71 to be fixed to the connecting member 41. Also good.

In the above embodiment, the connecting member 41 may be fixed to the module holder 38 with a screw or an adhesive.
In the above embodiment, the bottom surface 51a of the positioning recess 51 is formed in a planar shape orthogonal to the insertion direction, but the bottom surface 51a may be formed in a planar shape that is oblique to the insertion direction. Further, although the side surface 51 b is configured by the orthogonal surface 52 and the tapered surface 53, the side surface 51 b may be configured by only the orthogonal surface 52 or only the tapered surface 53. Furthermore, the bottom surface 51a and the side surface 51b may be curved surfaces curved in an arc shape. In this case, it is needless to say that the corner 31b of the bus bar 31 is in contact with the bottom surface 51a and the side surface 51b. The corner 32b of the bus bar 32, the bottom surface 54a and the side surface 54b of the auxiliary recess 54 can be similarly changed.

  In the above embodiment, the auxiliary recess 54 may not be formed, and the bus bar 31 may contact only the positioning recess 51. Further, the positioning of the plug terminals 31 a and 32 a in the receiving port portion 44 may be performed without forming the positioning recess 51, for example, with a jig or the like inserted from the opening of the receiving port portion 44.

  In the above embodiment, the corners 31 b of the bus bar 31 are brought into contact with the positioning recesses 51 formed in the side wall 43, thereby positioning the plug terminals 31 a and 32 a in the receiving port 44 in the insertion direction and the arrangement direction. I tried to do it. However, the present invention is not limited to this. For example, the module holder 38 is formed with a protrusion that allows the plug terminals 31a and 32a to be positioned in the insertion direction and the arrangement direction by contacting portions other than the corner 31b of the bus bar 31. May be.

  In the above embodiment, the bus bars 31 to 33 are connected by the two connecting members 41, but the number of connecting members 41 may be one or three or more. Needless to say, the number of bus bars and circuit components can be changed as appropriate.

  -In above-mentioned embodiment, although the connection member 41 was comprised with insulating resin, what is necessary is just an insulating material, for example, you may comprise with a ceramic etc. Similarly, the module holder 38 may be made of another insulating material such as ceramic.

  In the above embodiment, the present invention is applied to the control device 21 that is integrated with the electric motor 14, but may be applied to a control device that is spaced apart from the electric motor 14 and connected via a cable or the like. Good.

  In the above embodiment, the present invention is applied to the control device 21 of the electric motor 14 used as the drive source of the EPS actuator 13, but the control device of the electric motor used as the drive source of other devices such as an electric pump device, for example. 21 may be applied.

Next, technical ideas that can be understood from the above embodiments and other examples will be described below together with their effects.
(A) A circuit board on which a control circuit for outputting a control signal and a drive circuit for supplying a drive current to the electric motor based on the control signal are formed, and a connector portion for connecting the circuit board to a power source is provided. A connector module, the connector module having a plurality of bus bars for connecting the circuit board and the power source, a circuit component having a plurality of connection terminals and connected to the circuit board via the bus bars; A module holder having a bus bar and a receiving port portion that holds the circuit component and opens to the outside, and the connector portion is disposed at a predetermined position in the receiving port portion and the receiving port portion. In the manufacturing method of the control device of the electric motor constituted by the state where the relative positioning of the bus bars After connecting the bus bar with a connecting member and joining the circuit component to the bus bar, the plug terminal is inserted into the receiving port through a plurality of insertion holes formed in the module holder, and the plug terminal is connected to the receiving port. A method of manufacturing a control device for an electric motor, wherein the bus bar is fixed to the module holder by a fixing member in a state where the bus bar is disposed at the predetermined position in the section. According to the said structure, there can exist an effect similar to Claim 1.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle steering device, 14 ... Electric motor, 21 ... Control device, 25 ... Circuit board, 26 ... Connector module, 31-33 ... Bus bar, 31a, 32a ... Plug terminal, 34-37 ... Circuit component, 34a-37a ... Connection terminal, 38 ... Module holder, 39 ... Connector part, 41 ... Connection member, 44 ... Reception part, 45,46 ... Insertion hole, 47,61 ... Fixing screw, 51 ... Positioning recess, 54 ... Auxiliary recess, 62 ... Holding member, B ... power source.

Claims (4)

A circuit board on which a control circuit for outputting a control signal and a drive circuit for supplying a drive current to the electric motor based on the control signal are formed, and a connector module provided with a connector part for connecting the circuit board to a power source With
The connector module includes a plurality of bus bars for connecting the circuit board and the power source, a circuit component having a plurality of connection terminals and connected to the circuit board via the bus bar, and the bus bar and the circuit component. An electric motor including a module holder formed with a receiving hole portion that is held and opened to the outside, and wherein the connector portion includes the receiving hole portion and a plug terminal of the bus bar disposed at a predetermined position in the receiving port portion. In the control device of
A connecting member for connecting the plurality of bus bars to each other;
The module holder is formed with a plurality of insertion holes that are opened in the receptacle and into which the plug terminals are inserted,
The electric motor control device according to claim 1, wherein the bus bar is fixed to the module holder by a fixing member in a state where the plug terminal is disposed at the predetermined position in the receiving portion through the insertion hole. In the control apparatus of the electric motor according to claim 1,
The bus bar is fixed to the module holder by the fixing member from a height direction orthogonal to both the insertion direction of the plug terminal into the insertion hole and the arrangement direction orthogonal to the insertion direction,
The module holder is formed with a positioning portion for positioning the plug terminals in the insertion direction and the arrangement direction in the receiving portion by contacting one of the plurality of bus bars. An electric motor control device. In the control apparatus of the electric motor according to claim 2,
The module holder is provided with an auxiliary positioning portion for positioning the plug terminal in the insertion direction in the receiving portion by contacting one of the plurality of bus bars. An electric motor control device.   A vehicle steering apparatus comprising the electric motor control device according to claim 1.