JP2009261130A - Motor apparatus and motor actuator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor apparatus and a motor actuator capable of miniaturizing a substrate. <P>SOLUTION: A control circuit member 14 includes: a position sensor 72 as a detection device for detecting rotation of a rotor 42; a substrate 62 mounted with a motor controller 71 as a control part for controlling rotation of the rotor 42 based on an output signal from the position sensor 72; and a feeder plate 61 as a base for supporting the substrate 62. The feeder plate 61 is formed with a motor-side terminal 66 connected to a feeder terminal 47 as a feeder part of a brushless motor 13 and the motor controller 71. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a motor device including a brushless motor and a motor actuator including the motor device.

Conventionally, a motor device including a brushless motor includes a control circuit member for controlling the driving of the brushless motor (see, for example, Patent Document 1). The control circuit member has a substrate on which a detection element for detecting the rotation of the rotor of the brushless motor and a motor controller as a control unit are mounted, and the motor controller on the substrate receives the rotor based on an output signal from the detection element. The desired operation of the motor device is realized by controlling the rotation of the motor device.
Japanese Patent No. 2844712

  However, in the motor device as described above, the motor controller and the position sensor are mounted on the substrate, wiring for electrically connecting them is also mounted, and furthermore, the motor controller and the position sensor are electrically connected. Wiring etc. are also mounted. In the motor device as described above, an increase in the size of the substrate due to the mounting of such complicated wiring has been a problem, which has been a cause of an increase in the size of the motor device and thus the motor actuator. .

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a motor device and a motor actuator that can reduce the size of a substrate.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a brushless motor in which a housing and a rotor having a magnet are accommodated in a housing, and a control circuit member for controlling the driving of the brushless motor. The control circuit member includes a detection element that detects rotation of the rotor, and a substrate on which a control unit that controls rotation of the rotor based on an output signal from the detection element is provided. And a base part for supporting the board, and the base part is provided with motor-side terminals respectively connected to the control part of the board and the power feeding part of the brushless motor. .

  In this invention, since it is not necessary to provide wiring and connection terminals corresponding to the motor side terminal for electrically connecting the control unit of the substrate and the power supply unit of the brushless motor on the substrate, the substrate area can be kept small. Is possible. Thereby, it becomes possible to make a board | substrate small, As a result, it can contribute to size reduction of the board | substrate board surface direction in a motor apparatus.

  According to a second aspect of the present invention, in the motor device according to the first aspect, the control circuit member is disposed on one end side in the axial direction of the brushless motor, and the substrate and the base portion are aligned in the axial direction. The gist is that it was established.

In this invention, since the brushless motor, the substrate, and the base portion are arranged side by side in the axial direction, the motor device can be miniaturized in the direction orthogonal to the axial line.
According to a third aspect of the present invention, in the motor device according to the second aspect, the substrate having the detection element is disposed on the brushless motor side to detect rotation of the rotor, and the brushless The gist of the invention is that the board is formed with an insertion part through which the power feeding part of the brushless motor is inserted to be connected to the terminal of the base part arranged on the opposite side of the board. .

  In the present invention, the power supply unit of the brushless motor is inserted through the board and connected to the motor side terminal on the opposite side of the brushless motor. Therefore, the power supply part of the brushless motor can be made into a simple shape such as a straight line, and the configuration of the motor device can be simplified.

  According to a fourth aspect of the present invention, in the motor device according to any one of the first to third aspects, the motor-side terminal is formed with a press-fit connection portion into which the power supply portion of the brushless motor is press-fitted. This is the gist.

  In this invention, since the power feeding part and the motor side terminal can be electrically connected by press-fitting the power feeding part of the brushless motor into the press-fit connection part, the electrical connection between the power feeding part and the motor side terminal is achieved. It becomes easy.

  According to a fifth aspect of the present invention, in the motor device according to any one of the first to fourth aspects, the base portion of the control circuit member has a flat shape, and the flat surface is parallel to the substrate. The gist is that it is provided.

In this invention, it can contribute to thickness reduction of a control circuit member, As a result, it can contribute to size reduction of a motor apparatus.
According to a sixth aspect of the present invention, in the motor device according to any one of the first to fifth aspects, the housing of the brushless motor is formed with a bearing holding portion that holds a bearing that pivotally supports the rotor. The gist of the present invention is that the bearing holding portion is arranged radially inside the magnet of the rotor.

In the present invention, the rotor and the bearing holding portion can be arranged close to the axial direction, so that the axial dimension of the brushless motor can be kept small.
According to a seventh aspect of the present invention, in the motor device according to any one of the first to sixth aspects, a rotation detection through-hole is formed in the brushless motor housing, and the detection element of the substrate is The gist of the invention is that it is disposed through or in the through hole and faces the magnet of the rotor.

In the present invention, the rotor magnet and the detection element can be directly opposed to each other, so that the rotation of the rotor can be easily detected.
The gist of an eighth aspect of the invention is the motor device according to any one of the first to seventh aspects, wherein the base portion is integrally provided with a power feeding connector portion.

In this invention, it can be set as the structure which the base part served as the connector part for electric power feeding, and the increase in a number of members can be suppressed.
The invention according to claim 9 is a motor actuator comprising the motor device according to any one of claims 1 to 8 and a speed reduction mechanism that decelerates and outputs the rotation of the motor device. The gist.

  In this invention, it is possible to contribute to miniaturization of the motor actuator by using a motor device capable of miniaturizing the substrate for the motor actuator.

  Therefore, according to the invention described above, it is an object to provide a motor device and a motor actuator capable of reducing the size of a substrate.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a vehicle air conditioner using a motor actuator according to the present invention. As shown in FIG. 1, the vehicle air conditioner includes a blower fan 4, an evaporator 5, a heater core 6, and air blown in the air conditioning duct 3 in an air conditioning duct 3 having an outside air introduction path 1 and an inside air circulation path 2. Various switching doors 7 for switching passages and a plurality of motor actuators 8 for operating the various switching doors 7 are provided.

  The air conditioning duct 3 is provided with an outside air introduction path 1 and an inside air circulation path 2 symmetrically on the inlet side as an air suction path, and a blower fan 4 driven by a motor 4a is provided near the inlet, immediately downstream thereof. Is provided with an evaporator 5. Further, on the further downstream side, a heater core 6 is provided so as to close almost half of the cross section of the duct 3. The downstream of the heater core 6 is divided into three branch ducts 3a, 3b, 3c. The inlet part has an R / F door 7a for switching between outside air intake and inside air circulation, the heater core 6 part has an air mix door 7b for opening and closing the remaining duct cross section, and further each branch part of the branch ducts 3a to 3c. Each is provided with a mode switching door 7c. Each of these various switching doors 7 is provided with a corresponding motor actuator 8 having the same configuration, and the various switching doors 7 are operated by rotation of the output shaft 8a.

Next, the motor actuator 8 that drives the various switching doors 7 will be described.
As shown in FIG. 2, the case of the motor actuator 8 includes a first case member 10 having a cup shape from a bottom portion 10 a and a side wall 10 b extending orthogonally from an outer peripheral end portion of the bottom portion 10 a, and the first case member 10. The second case member (not shown) assembled so as to cover the opening is formed into a flat box shape. In the housing, a motor device 11 as a drive source of the motor actuator 8 and a speed reduction mechanism 12 that decelerates the rotation of the motor device 11 and transmits it to the output shaft 8a are housed in a drive-coupled state. Has been. In FIG. 2, for convenience of explanation, the second case member is omitted so that the internal configuration can be seen.

The motor device 11 includes a brushless motor 13 and a control circuit member 14 that is provided on the base end side (opposite output side) of the motor 13 and controls driving of the motor 13.
[Configuration of brushless motor]
As shown in FIGS. 2 and 3, the housing of the brushless motor 13 includes a substantially bottomed cylindrical yoke 21 that opens to the base end side, and an end frame 22 that is provided at the opening end of the yoke 21. A mounting plate 23 is fixed to the bottom (output side end) of the yoke 21 so as to be orthogonal to the axis L, and the mounting plate 23 is respectively attached to the bottom 10a of the first case member 10 and the bottom of the second case member. It is clamped by the formed holding portion 10c in the case assembling direction (the direction orthogonal to the paper surface in FIG. 2). Thereby, the yoke 21 is held by the housing of the motor actuator 8. A bearing 25 that supports the rotating shaft 24 of the brushless motor 13 is fixed to the center of the bottom of the yoke 21.

  The end frame 22 has a substantially cup shape from a circular bottom portion 22a and a side wall 22b extending from the periphery of the bottom portion 22a to the motor front end side (see FIG. 4). An annular fixing member 26 is provided on the outer peripheral surface of the side wall 22b so as to slightly protrude from the outer peripheral surface. The fixing member 26 is press-fitted into the inner peripheral surface of the yoke 21, whereby the end frame 22 is fixed to the yoke 21. Further, the side wall 22b of the end frame 22 is formed with a fitting convex portion 22c that protrudes to the outer peripheral side, and the fitting convex portion 22c is a concave portion that is notched at the opening end (side wall) of the yoke 21. 21a is fitted. Thereby, the end frame 22 is prevented from rotating. A positioning projection 22d is formed on the side wall 22b of the end frame 22 (see FIG. 4).

  The end frame 22 is formed with a cylindrical bearing holding portion 22e extending from the center of the bottom portion 22a to the motor front end side. The base end portion of the rotary shaft 24 is pivotally supported on the inner peripheral surface of the bearing holding portion 22e. The bearing 28 is fixed. Further, at the bottom 22a of the end frame 22, three insertion holes 22f for terminal insertion and three through holes 22g for rotation detection are formed at equal intervals in the circumferential direction.

  The rotating shaft 24 supported by the bearings 25 and 28 protrudes from the bottom of the yoke 21 to the outside of the housing (yoke 21), and a worm is formed on the outer peripheral portion of the protruding portion (tip portion) of the rotating shaft 24. The worm gear 31 is inserted and fixed so as to be coaxial with the rotary shaft 24. The tip of the worm gear 31 is supported on the side wall 10b of the first case member 10 via a thrust receiving ball 31a for receiving a thrust load. The speed reduction mechanism 12 includes the worm gear 31, and a worm wheel 32, an intermediate gear 33, and an output gear 34 that are rotatably supported by the first case member 10, respectively. The rotation of the brushless motor 13 is decelerated by the speed reduction mechanism 12 and transmitted to the output shaft 8 a provided at the center of the output gear 34. The various switching doors 7 are operated by the rotation of the output shaft 8a.

  As shown in FIGS. 2 and 5, the brushless motor 13 includes a substantially cylindrical stator 41 fixed to the inner peripheral surface of the yoke 21, and a rotor having the rotating shaft 24 disposed on the inner peripheral side of the stator 41. 42.

  The stator 41 includes a cylindrical outer core 43 that is fixed to the inner peripheral surface of the yoke 21, and an inner core 44 that is provided on the inner peripheral side of the outer core 43. Each of the outer core 43 and the inner core 44 is formed by laminating and laminating a plurality of laminated plate materials made of a metal material in the axis L direction. As shown in FIG. 5B, the inner core 44 includes a cylindrical portion 44a centering on the axis L and a plurality of teeth portions 44b extending radially outward from the cylindrical portion 44a. The teeth portions 44b are provided at equal intervals in the circumferential direction, and the tip surfaces (outer end surfaces) of the teeth portions 44b are in contact with the inner peripheral surface of the outer core 43 (see FIG. 2). A slit 44c extending along the axis L is formed in the cylindrical portion 44a between the teeth portions 44b. In addition, the laminated board material which comprises the inner core 44 has the shape where the thing (end part board | plate material M1) of the both ends of the axis L direction continues in the circumferential direction, respectively, and other laminated board materials (intermediate board | plate material M2) are each teeth part 44b. The slit 44c is formed by the gap between the divided portions of the intermediate laminated sheet material.

  As shown in FIG. 5A, an insulator 45 made of a resin material is integrally formed with the inner core 44. The insulator 45 includes a cylindrical covering portion 45a that substantially covers the cylindrical portion 44a of the inner core 44, and a teeth covering portion 45b that covers a portion other than the distal end surface of the tooth portion 44b. A part of the inner peripheral surface of the inner core 44 (cylindrical portion 44a) is exposed from the cylindrical covering portion 45a. A plurality of terminal attachment portions 45c are formed at the base end portion in the axis L direction of the cylindrical covering portion 45a.

  The stator 41 has three-phase (U-phase, V-phase, and W-phase) exciting coils 46 wound around each tooth portion 44b via an insulator 45. The inner core 44 has a shape in which the tooth portion 44b protrudes outward from the cylindrical portion 44a. Therefore, a winding (excitation coil 46) can be wound from the outer peripheral side of the inner core 44. Winding using a type winding machine is possible.

  The excitation coils 46 for each phase are electrically connected to three power supply terminals 47 serving as power supply parts having base ends inserted into terminal attachment parts 45 c of the insulator 45. The power supply terminals 47 are arranged at equal intervals in the circumferential direction. As shown in FIGS. 2 and 3, each power supply terminal 47 extends linearly along the axis L and is inserted through the insertion hole 22 f of the end frame 22. The three power supply terminals 47 correspond to the U phase, the V phase, and the W phase, respectively, and are connected to the terminals of the respective phases of the exciting coil 46. Further, the neutral point terminal 48 inserted and attached to one of the terminal mounting portions 45c is connected to a terminal on the side not connected to the power supply terminal 47 in the excitation coil 46 of each phase.

The rotor 42 includes a rotating shaft 24, a rotor core 51, a main magnetic flux magnet 52, a collar member 53, and a sensor magnet 54.
As shown in FIGS. 2 and 5, the rotating shaft 24 is press-fitted into the through hole 51 a of the rotor core 51, and the rotor core 51 is fixed to an intermediate portion in the axis L direction of the rotating shaft 24. The rotor core 51 is formed by laminating and crimping an oval laminated plate material (oval plate material M3) in the axis L direction when viewed from the axis L direction. The rotor core 51 is inserted into a cylindrical main magnetic flux magnet 52, and the outer peripheral portion of the rotor core 51 and the inner peripheral surface of the main magnetic flux magnet 52 are bonded and fixed with an adhesive. The main magnetic flux magnet 52 is disposed so as to face the inner peripheral surface of the inner core 44 in the radial direction.

  As shown in FIG. 5C, the laminated plate members constituting the rotor core 51 are laminated in a state where they are sequentially shifted by 120 degrees in one rotation direction of the center of the axis L, whereby the outer circumferential portion of the rotor core 51 is formed. Unevenness is formed. According to such a configuration, the adhesive accumulates on the unevenness of the outer periphery of the rotor core 51, and the main magnetic flux magnet 52 can be firmly fixed. Further, it is possible to form irregularities on the outer periphery of the rotor core 51 without performing cutting or the like.

  Further, since the three types of laminated plate materials of the outer core 43, the inner core 44, and the rotor core 51 have a shape that can be taken together, it is possible to reduce the amount of wasted material and improve the yield. ing. When the outer core 43 and the inner core 44 are not separated, the tip of the teeth 44b of the inner core 44 is connected to the inner peripheral surface of the outer core 43. After the outer core 43 and the inner core 44 are separated from each other, the inner core 44 is press-fitted into the inner peripheral surface of the outer core 43 while being rotated by a predetermined angle from the cut portion. Thereby, it can suppress that a clearance gap produces between the outer core 43 and the inner core 44 (teeth part 44b front-end | tip).

  A cup-shaped collar member 53 that opens to the base end side is fixed to the rotary shaft 24 so as to be adjacent to the main magnetic flux magnet 52 on the base end side. An annular sensor magnet 54 centering on the axis L is fixed to the end surface of the collar member 53 opposite to the main magnetic flux magnet 52, so that the sensor magnet 54 rotates integrally with the main magnetic flux magnet 52. It has become. The main magnetic flux magnet 52 and the sensor magnet 54 are both N poles and S poles alternately magnetized in the circumferential direction, and have the same diameter. The main magnetic flux magnet 52 is magnetized from the radial direction, and the sensor magnet 54 is magnetized from the axis L direction.

  A bearing holding portion 22e of the end frame 22 is disposed on the inner peripheral side (radially inner side) of the sensor magnet 54, and the tip end portion of the bearing holding portion 22e extends to the inner peripheral side of the collar member. (See FIG. 2). With such a configuration, the sensor magnet 54 and the end frame 22 can be arranged closer to the direction of the axis L, and as a result, the size of the brushless motor 13 in the direction of the axis L can be kept small.

[Configuration of control circuit member]
Next, the control circuit member 14 of the motor device 11 will be described with reference to FIGS. 2 and 6A, 6B, and 6C. The control circuit member 14 includes a power feeding plate 61 as a base portion supported by the case of the motor actuator 8 and a substrate 62 supported by the power feeding plate 61. The power feeding plate 61 and the substrate 62 are juxtaposed in the direction of the axis L of the brushless motor 13, and the substrate 62 is disposed on the brushless motor 13 side.

  The power feeding plate 61 integrally includes a power feeding connector portion 63 connected to an external connector (not shown) and a flat plate portion 64 provided on the substrate 62 side of the connector portion 63. . The connector part 63 has a base part 63a formed integrally with the plate part 64, and the flange part 63b formed on the base part 63a is fitted to the fitting part 10d formed on the side wall 10b of the first case member 10. Has been. Accordingly, the power feeding plate 61 is supported by the first case member 10. The fitting portion 10d is formed at a position where it does not wrap with the brushless motor 13 in the axis L direction.

  The plate portion 64 is formed so that its plate surface is orthogonal to the axis L of the brushless motor 13 and extends from the connector portion 63 toward the brushless motor 13 so as to wrap in the direction of the axis L with the motor 13. The plate portion 64 has a rectangular shape in a plan view, and a fixed portion 64a protruding in the plate thickness direction is formed at a pair of corner portions at diagonal positions. A substrate 62 is fixed to each fixing portion 64 a in parallel to the plate portion 64 and spaced from the plate portion 64. In addition, at a predetermined position of the plate portion 64, an abutting portion 64b that abuts on the substrate 62 is formed so as to protrude in the plate thickness direction, thereby suppressing the warpage of the substrate 62.

  In such a control circuit member 14, the connector portion 63 is provided with five connector-side terminals 65 by insert molding. The distal end portion of each connector-side terminal 65 protrudes from the base portion 63a to the side opposite to the substrate 62, and the distal end portion is disposed in the opening convex portion 10e protruding from the fitting portion 10d to the outside of the case. Each connector-side terminal 65 is connected to the external connector via the opening convex portion 10e.

  Each connector-side terminal 65 is bent in a crank shape inside the power feeding plate 61, and its base end portion projects from the plate portion 64 toward the substrate 62. And the base end part of each connector side terminal 65 penetrates the board | substrate 62, and each by the soldering etc. to the several terminal connection part 62a formed in the surface (surface on the opposite side to the electric power feeding plate 61) of the board | substrate 62 It is connected.

  Further, three motor side terminals 66 are embedded in the plate portion 64 by insert molding. Each motor-side terminal 66 is formed in a predetermined pattern inside the plate portion 64, and one end portion thereof protrudes from the plate portion 64 to the substrate 62 side. The protruding end portion of each motor side terminal 66 penetrates the substrate 62 and is connected to the terminal connection portion 62a of the substrate 62 by soldering or the like, like the base end portion of the connector side terminal 65. . Each motor side terminal 66 is separated from each other through a cutting hole 64c formed at a predetermined position of the plate portion 64 after the insert molding.

  Each motor-side terminal 66 is formed with a press-fit connection portion 66 a having a cross-shaped slit, and each press-fit connection portion 66 a is exposed through three window holes 64 d formed through the plate portion 64. On the other hand, terminal insertion holes 62b as insertion parts are formed through the respective positions of the board 62 facing the respective press-fit connection parts 66a in the direction of the axis L. The power supply terminals 47 of the brushless motor 13 are inserted into the terminal insertion holes 62b of the substrate 62 and are press-fitted into the press-fit connection portions 66a of the motor-side terminals 66, whereby the power supply terminals of the brushless motor 13 are supplied. 47 is electrically connected to the motor side terminal 66. According to this configuration, soldering or the like for connecting the power feeding terminal 47 and the motor side terminal 66 becomes unnecessary, and the assembling property is improved.

  As described above, in the motor device 11 of the present embodiment, since the motor-side terminal 66 is provided on the power feeding plate 61, it is not necessary to provide wiring and connection terminals corresponding to the motor-side terminal 66 on the substrate 62. Miniaturization of the substrate 62 is realized.

  On the other hand, each terminal connection part 62a of the board | substrate 62 is electrically connected to the motor controller 71 as a control part mounted on the surface of this board | substrate 62 via the pattern wiring which is not shown in figure. Further, three position sensors 72 as detection elements are mounted on the surface of the substrate 62 at equal intervals in the circumferential direction of the axis L, and each position sensor 72 is electrically connected to the motor controller 71 by pattern wiring (not shown). It is connected. Each position sensor 72 is disposed in the through hole 22g of the end frame 22 and faces the sensor magnet 54 of the rotor 42 in the axis L direction. With this configuration, since the position sensor 72 mounted on the substrate 62 can be disposed close to the sensor magnet 54, the rotation of the sensor magnet 54 can be easily detected.

  In the motor device 11 as described above, as shown in FIG. 7, the motor controller 71 is supplied with power from the external connector via the connector-side terminal 65. A three-phase drive current is generated based on an output signal from a position sensor 72 that detects the rotational position of the rotor 42. The motor controller 71 supplies the drive current to the brushless motor 13 via each motor-side terminal 66 of the power feeding plate 61 to control the rotation of the brushless motor 13.

Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, a power supply plate 61 as a base portion is connected to a motor controller 71 as a control portion mounted on the substrate 62 and a power supply terminal 47 as a power supply portion of the brushless motor 13. A motor side terminal 66 is provided. This eliminates the need to provide wiring and connection terminals corresponding to the motor-side terminal 66 for electrically connecting the motor controller 71 and the power supply terminal 47 on the substrate 62, thereby reducing the area of the substrate 62. Is possible. Thereby, the board | substrate 62 can be reduced in size, As a result, it can contribute to size reduction of the board | substrate surface direction of the board | substrate 62 in the motor apparatus 11 and the motor actuator 8. FIG.

  (2) In the present embodiment, the control circuit member 14 is disposed on the base end side (one end side in the axis L direction) of the brushless motor 13, and the substrate 62 and the power feeding plate 61 are arranged in parallel in the axis L direction. Therefore, since the brushless motor 13, the substrate 62, and the power supply plate 61 are arranged in parallel in the direction of the axis L, the motor device 11 can be downsized in the direction orthogonal to the axis L.

  (3) In the present embodiment, the substrate 62 having the detection element is disposed on the brushless motor 13 side so as to detect the rotation of the rotor 42, and is opposite to the brushless motor 13 across the substrate 62. A terminal insertion hole 62b as an insertion portion through which the power supply terminal 47 is inserted is formed in the substrate 62 so as to be connected to the motor side terminal 66 of the power supply plate 61 arranged. Thereby, since the power feeding terminal 47 is inserted into the substrate 62 and connected to the motor side terminal 66 on the opposite side of the brushless motor 13, it becomes possible to make the power feeding terminal 47 into a simple shape such as a straight line. The configuration of the motor device 11 can be simplified.

  (4) In the present embodiment, the motor-side terminal 66 is formed with a press-fit connection portion 66a into which the power feeding terminal 47 of the brushless motor 13 is press-fitted. Thereby, since the power supply terminal 47 and the motor side terminal 66 can be electrically connected by press-fitting the power supply terminal 47 into the press-fit connection portion 66a, the electrical connection is facilitated.

  (5) In the present embodiment, the power supply plate 61 of the control circuit member 14 has a flat shape, and the flat surface is provided so as to be parallel to the substrate 62. This contributes to the thinning of the control circuit member 14. As a result, the motor device 11 can be reduced in size.

  (6) In the present embodiment, the bearing holding portion 22 e of the end frame 22 is disposed on the radially inner side of the sensor magnet 54 of the rotor 42. As a result, the sensor magnet 54 and the bearing holding portion 22e can be disposed close to the axis L direction, so that the dimension of the brushless motor 13 in the axis L direction can be kept small.

  (7) In the present embodiment, the position sensor 72 as the detection element of the substrate 62 is arranged in the through hole 22g for detecting the rotation of the end frame 22 and is configured to face the sensor magnet 54 of the rotor 42. The As a result, the sensor magnet 54 and the position sensor 72 can be arranged directly opposite to each other, so that the rotation of the rotor 42 can be easily detected.

  (8) In the present embodiment, since the power feeding plate 61 is integrally provided with the power feeding connector portion 63, the power feeding plate 61 can also serve as the connector portion 63, thereby suppressing an increase in the number of members. Can do.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the terminal insertion hole 62b is formed as the insertion portion of the substrate 62. However, for example, a notch portion may be formed in the substrate 62 as the insertion portion.

In the above embodiment, the number of power supply terminals 47 and position sensors 72 is not limited to three, but may be one, two, or four or more.
In the above embodiment, the position sensor 72 is arranged in the through hole 22g for rotation detection so as to face the sensor magnet 54. However, the position sensor 72 is not arranged in the through hole 22g. You may comprise so that the sensor magnet 54 may be opposed via.

In the above embodiment, the connector portion 63 is integrally provided on the power feeding plate 61, but the connector portion 63 may be provided separately.
In the above embodiment, the main magnetic flux magnet 52 and the sensor magnet 54 are provided as separate components in the rotor 42, but a configuration may be adopted in which one magnet is provided as an integral component.

In the above embodiment, the inner rotor type brushless motor 13 is used, but an outer rotor type brushless motor may be used.
In the above embodiment, the vehicle air conditioner has been described as an example. However, the motor actuator 8 may be used for devices other than the vehicle air conditioner, such as a vehicle headlamp control system (Adaptive Front Lighting System).

The schematic block diagram of the vehicle air conditioner using the motor actuator of this embodiment. The top view which shows a motor actuator. The perspective view which looked at the brushless motor from the base end side. The perspective view which shows an end frame. (A) An exploded perspective view of a brushless motor, (b) An enlarged perspective view of an inner core, (c) An enlarged perspective view of a rotor core. (A) The front view which looked at the control circuit member from the board | substrate side, (b) The side view of the control circuit member 14, (c) The back view which looked at the control circuit member from the electric power feeding plate side. Schematic which shows the circuit structure of a motor apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Motor apparatus, 12 ... Deceleration mechanism, 13 ... Brushless motor, 14 ... Control circuit member,
DESCRIPTION OF SYMBOLS 21 ... Yoke which comprises the housing of a brushless motor, 22 ... End frame which comprises the housing of a brushless motor, 22e ... Bearing holding part, 22g ... Through-hole for rotation detection, 25, 28 ... Bearing, 41 ... Stator, 42 ... Rotor, 61... Power feeding plate as base, 62... Substrate, 63 .. connector, 66 .. motor side terminal, 66 a.

Claims (9)

A motor device including a brushless motor in which a housing and a rotor having a magnet are accommodated in a housing, and a control circuit member for controlling the driving of the brushless motor,
The control circuit member includes a detection element that detects rotation of the rotor, a substrate provided with a control unit that controls rotation of the rotor based on an output signal from the detection element, and a substrate for supporting the substrate With a base,
The motor device according to claim 1, wherein the base portion is provided with motor side terminals respectively connected to the control unit of the substrate and the power supply unit of the brushless motor. The motor device according to claim 1,
The control circuit member is disposed on one end side in the axial direction of the brushless motor,
The motor device according to claim 1, wherein the substrate and the base portion are arranged side by side in the axial direction. The motor device according to claim 2,
The substrate having the detection element is disposed on the brushless motor side to detect rotation of the rotor, and the base portion disposed on the opposite side of the substrate with respect to the brushless motor. The motor device according to claim 1, wherein an insertion portion through which a power feeding portion of the brushless motor is inserted is formed on the substrate to be connected to a terminal. In the motor device according to any one of claims 1 to 3,
The motor device according to claim 1, wherein a press-fit connection portion into which a power feeding portion of the brushless motor is press-fitted is formed in the motor-side terminal. In the motor device according to any one of claims 1 to 4,
The motor device according to claim 1, wherein the base portion of the control circuit member has a flat shape and is provided so that the flat surface is parallel to the substrate. In the motor device according to any one of claims 1 to 5,
The brushless motor housing is provided with a bearing holding portion for holding a bearing for pivotally supporting the rotor, and the bearing holding portion is disposed on the radially inner side of the magnet of the rotor. . In the motor device according to any one of claims 1 to 6,
A through hole for detecting rotation is formed in the brushless motor housing,
The motor device according to claim 1, wherein the detection element of the substrate is disposed through or in the through hole and faces the magnet of the rotor. In the motor device according to any one of claims 1 to 7,
The motor device according to claim 1, wherein a power supply connector portion is provided integrally with the base portion.   A motor actuator comprising: the motor device according to claim 1; and a speed reduction mechanism that decelerates and outputs the rotation of the motor device.

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