WO2014125982A1 - Dispositif de moteur - Google Patents

Dispositif de moteur Download PDF

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Publication number
WO2014125982A1
WO2014125982A1 PCT/JP2014/052719 JP2014052719W WO2014125982A1 WO 2014125982 A1 WO2014125982 A1 WO 2014125982A1 JP 2014052719 W JP2014052719 W JP 2014052719W WO 2014125982 A1 WO2014125982 A1 WO 2014125982A1
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WO
WIPO (PCT)
Prior art keywords
sensor
motor device
rotation
armature shaft
sensor magnet
Prior art date
Application number
PCT/JP2014/052719
Other languages
English (en)
Japanese (ja)
Inventor
浩之 内村
雄一 柳田
Original Assignee
株式会社ミツバ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ミツバ filed Critical 株式会社ミツバ
Publication of WO2014125982A1 publication Critical patent/WO2014125982A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel

Definitions

  • the present invention relates to a motor device having a rotating shaft.
  • a motor device provided with a speed reduction mechanism that can obtain a large output while being small is used as a drive source for a power window device or a sunroof device mounted on a vehicle such as an automobile.
  • the motor device When the operator operates an operation switch provided in the vehicle interior or the like, the motor device is driven to rotate, whereby an opening / closing body such as a window glass or a sunroof is opened / closed.
  • a technique described in Patent Document 1 is known as a motor device including such a speed reduction mechanism.
  • a motor (motor device) described in Patent Document 1 includes a motor main body and a speed reduction unit, and a rotation shaft is rotatably accommodated in a yoke that forms the motor main body, and a gear that forms a speed reduction unit.
  • a worm and a worm wheel that form a speed reduction mechanism are rotatably accommodated in the housing.
  • a control circuit board on which a plurality of electric circuit components are mounted is provided in the gear housing, and the Hall element constituting the electric circuit components is opposed to the sensor magnet fixed to the rotating shaft, and the rotating shaft The rotation state is detected.
  • the gear housing is formed with a board mounting port and a connector mounting port.
  • the board mounting port is disposed on one side of the rotating shaft, and the connector mounting port is disposed on the other side of the rotating shaft.
  • the control circuit board is mounted from the board mounting port (one side), the control circuit board is screwed to the gear housing, the connector housing is mounted from the connector mounting port (the other side), and the connector housing is mounted. Screwed to the gear housing.
  • the motor device mounted on a vehicle such as an automobile as described above is installed in a narrow door or a roof, it is desirable to reduce the thickness and reduce the size and weight.
  • the control circuit board is provided so as to straddle the rotating shaft from one side sandwiching the rotating shaft to the other side sandwiching the rotating shaft. Therefore, not only the thickness dimension along the direction in which the control circuit board of the motor device extends is large, but also the thickness dimension along the direction in which the control circuit board of the motor device and the rotating shaft overlap with each other is large. It was difficult to meet the needs.
  • An object of the present invention is to provide a motor device capable of reducing the size and weight of the motor device without degrading the layout property to the attachment object.
  • a motor device having a rotating shaft, the sensor magnet being fixed to the rotating shaft and provided with a plurality of magnetic poles alternately along the rotation direction of the rotating shaft, and the diameter of the sensor magnet
  • a sensor board disposed on the outside in the direction through a gap; and a rotation sensor provided on the sensor board for detecting a rotation state of the rotary shaft from a change in the magnetic pole accompanying rotation of the sensor magnet,
  • the sensor substrate extends around the rotation axis toward the radially outer side of the rotation axis.
  • the rotation sensor is accommodated within the axial dimension of the sensor magnet when viewed from the opposite side across the sensor magnet.
  • the rotation sensor is accommodated within a diameter dimension of the sensor magnet when viewed from the opposite side with the sensor magnet interposed therebetween.
  • the sensor board is provided on a connector member to which an external connector is connected, and the connector member is assembled from a radially outer side of the rotating shaft to a housing that houses the rotating shaft.
  • a partition wall is provided between the sensor magnet and the rotation sensor.
  • the sensor substrate which is disposed on the radially outer side of the sensor magnet via the gap and provided with the rotation sensor for detecting the rotation state of the rotation shaft, is disposed on the outer side in the radial direction of the rotation shaft. Since the sensor substrate is provided so as to extend toward the other side, it is not necessary to provide the sensor substrate so as to straddle the rotation shaft from one side of the rotation shaft to the other side of the rotation shaft.
  • the thickness of the motor device along the direction intersecting with the direction in which the sensor substrate extends can be reduced, and the motor device can be further reduced in size and weight.
  • the sensor board can be gathered more compactly than before, it is possible to improve the layout of the motor device to be attached.
  • FIG. 1 is a partial cross-sectional view showing a motor device according to an embodiment of the present invention
  • FIG. 2 is an enlarged partial cross-sectional view showing a broken-line circle A portion of FIG. 1
  • FIG. 3 is a motor device of FIG. The perspective view which shows these connector members is shown, respectively.
  • a motor device 10 shown in FIG. 1 is used as a drive source of a power window device (not shown) mounted on a vehicle such as an automobile, and drives a window regulator (not shown) that moves the window glass up and down.
  • the motor device 10 is formed as a motor with a speed reduction mechanism capable of large output even though it is small, and is installed in a narrow space (not shown) formed in the door of the vehicle.
  • the motor device 10 includes a motor unit 20 and a gear unit 40.
  • the motor unit 20 and the gear unit 40 are connected to each other by a plurality of fastening screws 11 (two in the drawing) and are unitized. .
  • the motor unit 20 includes a motor case 21 formed into a bottomed cylindrical shape by pressing (deep drawing) a steel plate made of a magnetic material.
  • a plurality of magnets 22 (two in the figure) having a substantially arc-shaped cross section are fixed to the inner wall of the motor case 21, and an armature 24 around which a coil 23 is wound is provided inside each magnet 22. It is rotatably accommodated through a predetermined gap.
  • a brush holder 25 is attached to the opening side (left side in the figure) of the motor case 21, and the opening side of the motor case 21 is closed by the brush holder 25.
  • the armature shaft 26 as a rotation axis is fixed through the rotation center C1 of the armature 24.
  • the armature shaft 26 is provided so as to cross both the motor unit 20 and the gear unit 40, and one end side (right side in the drawing) of the armature shaft 26 is disposed inside the motor case 21. The other end side in the direction (left side in the figure) is disposed inside the gear case 41.
  • a commutator 27 is fixed to a substantially intermediate portion along the axial direction of the armature shaft 26 and a portion close to the armature 24.
  • the end of the coil 23 wound around the armature 24 is electrically connected to the commutator 27.
  • a plurality of brushes 28 (two in the drawing) held by the brush holder 25 are slidably contacted with the outer periphery of the commutator 27, and each brush 28 has a predetermined pressure toward the commutator 27 by a spring member 29. In elastic contact.
  • a rotational force electromagnettic force
  • the armature shaft 26 rotates at a predetermined rotational speed and rotational torque. ing.
  • a sensor magnet 30 is fixed to a substantially intermediate portion along the axial direction of the armature shaft 26 and on the opposite side of the commutator 27 from the armature 24 side.
  • the sensor magnet 30 is formed in an annular shape by alternately arranging four magnetic poles (see FIG. 4) along the rotation direction of the armature shaft 26.
  • the sensor magnet 30 is configured to rotate integrally with the armature shaft 26. Therefore, as the armature shaft 26 rotates, the state of magnetic flux lines with respect to the rotation sensor 70 disposed on the radially outer side of the sensor magnet 30 changes. (See FIG. 6).
  • a worm gear 31 is provided on the other end side in the axial direction from the sensor magnet 30 of the armature shaft 26.
  • the worm gear 31 is formed in a substantially cylindrical shape and is fixed to the armature shaft 26 by press-fitting.
  • the worm gear 31 meshes with a tooth portion 42 a of a worm wheel 42 that is rotatably provided in the gear case 41.
  • the worm gear 31 rotates in the gear case 41 as the armature shaft 26 rotates, and the rotation is transmitted to the worm wheel 42.
  • the worm gear 31 and the worm wheel 42 form a speed reduction mechanism SD.
  • the bottom side (right side in the figure) of the motor case 21 is formed in a stepped shape, and a small-diameter portion 21 a having a smaller diameter than the main body portion of the motor case 21 is provided in the portion.
  • a first radial bearing 32 and a first thrust bearing 33 are mounted on the small-diameter portion 21a. These bearings 32 and 33 rotatably support one end side of the armature shaft 26 in the axial direction.
  • the brush holder 25 is formed into a predetermined shape by injection molding a resin material such as plastic, and includes a holder main body 25a and a bearing holding cylinder 25b.
  • the holder main body 25a holds the plurality of brushes 28 movably and is attached to the opening portion of the motor case 21 (see FIG. 1).
  • the bearing holding cylinder 25b is formed in a cylindrical shape and protrudes from the holder main body 25a toward the gear case 41 side (left side in the figure).
  • a second radial bearing 34 that rotatably supports a substantially intermediate portion along the axial direction of the armature shaft 26 is attached to the tip portion of the bearing holding cylinder 25b. That is, the armature shaft 26 penetrates inside the bearing holding cylinder 25b.
  • the sensor magnet 30 fixed to the armature shaft 26 is disposed inside the bearing holding cylinder 25b, and rotates together with the armature shaft 26 inside the bearing holding cylinder 25b.
  • the bearing holding cylinder 25 b constitutes a partition wall in the present invention, and the bearing holding cylinder 25 b is provided between the sensor magnet 30 and the rotation sensor 70.
  • the bearing holding cylinder 25b functioning as a partition wall between the sensor magnet 30 and the rotation sensor 70, the wear powder of each brush 28 on the sensor magnet 30 side causes the rotation sensor 70 and the rotation sensor to move. 70 is prevented from adhering to the sensor substrate 60 on which 70 is mounted. Thereby, it can suppress over the long term that the detection performance of the rotation sensor 70 falls.
  • the gear unit 40 includes a gear case (housing) 41 and a connector member 50.
  • the opening side (front side in the figure) of the gear case 41 is sealed by a gear cover (not shown).
  • the gear case 41 that forms the gear portion 40 is formed in a predetermined shape from a resin material, and is connected to the opening side of the motor case 21 via the brush holder 25.
  • a worm gear housing portion 41a extending along the axial direction of the armature shaft 26 and a worm wheel housing portion 41b disposed in the vicinity of the worm gear housing portion 41a.
  • a worm gear 31 and a worm wheel 42 having a tooth portion 42a meshing with the worm gear 31 on the outer peripheral portion are accommodated rotatably.
  • the worm gear 31 is formed in a spiral shape, and the tooth portion 42 a is inclined at a gentle inclination angle toward the axial direction of the worm wheel 42. Thereby, smooth power transmission from the worm gear 31 to the worm wheel 42 is possible.
  • An output shaft 42b is disposed at the rotation center C2 of the worm wheel 42, and the output shaft 42b is connected to a window regulator (not shown) so that power can be transmitted. That is, the rotation of the armature shaft 26 is decelerated by the speed reduction mechanism SD to increase the torque, and is output from the output shaft 42b to the window regulator.
  • a third radial bearing 43 and a second thrust bearing 44 are provided on the opposite side (left side in the figure) to the motor case 21 side along the axial direction of the armature shaft 26 of the worm gear housing portion 41a.
  • the third radial bearing 43 and the second thrust bearing 44 rotatably support the other axial end side of the armature shaft 26.
  • a rubber bush 45 is provided on the opposite side of the second thrust bearing 44 to the armature shaft 26 side, and the rubber bush 45 presses the second thrust bearing 44 toward the armature shaft 26 with a relatively weak force. It is like that. This suppresses the armature shaft 26 from rattling in the axial direction while suppressing an increase in rotational resistance of the armature shaft 26.
  • one end of the armature shaft 26 in the axial direction is rotatably supported by the first radial bearing 32 and the first thrust bearing 33, and a substantially intermediate portion along the axial direction of the armature shaft 26 is supported by the second radial bearing 34.
  • the other end of the armature shaft 26 in the axial direction is rotatably supported by a third radial bearing 43 and a second thrust bearing 44. Thereby, the armature shaft 26 can rotate smoothly.
  • the gear case 41 is further provided with a stepped connector member mounting hole 41c.
  • the connector member mounting hole 41c is disposed in the vicinity of the brush holder 25 and on the side opposite to the worm wheel housing portion 41b side with the armature shaft 26 interposed therebetween.
  • the connector member mounting hole 41c extends in the radial direction of the armature shaft 26, and the connector member 50 separate from the gear case 41 is inserted into and fixed to the connector member mounting hole 41c. Yes.
  • the extension direction of the connector member mounting hole 41c will be described in more detail.
  • the extending direction of the connector member mounting hole 41c is a Y-axis direction that is perpendicular to both the X-axis direction and the Z-axis direction.
  • the X-axis direction and the Y-axis direction indicate the vertical and horizontal width directions of the motor device 10
  • the Z-axis direction indicates the thickness direction of the motor device 10.
  • each drive conductive member 25c is formed in a rod shape from brass or the like having excellent conductivity, and one end side of each drive conductive member 25c is electrically connected to each brush 28. Further, the other end side of each drive conductive member 25 c is electrically connected to one end side of a pair of power supply terminals 53 provided on the connector member 50.
  • each power supply terminal 53 is automatically electrically connected to the other end side of each driving conductive member 25c. Yes.
  • the gear case 41 is provided with three fixing portions 41d as shown in FIG.
  • Each fixing portion 41d is arranged at a predetermined interval (approximately 120 ° interval) around the gear case 41 so as to surround the output shaft 42b.
  • fixed part 41d is each mounted
  • the motor device 10 can be supported in a well-balanced manner in the narrow door, and as a result, the motor device 10 has a high load. Even if it is applied, it is possible to effectively prevent the motor device 10 from wobbling in the door.
  • the connector member 50 is formed in a substantially L shape by injection molding a resin material such as plastic, and includes a connector connection portion 51 and an insertion portion 52.
  • An external connector CN (see FIG. 1) on the vehicle side is connected to the connector connecting portion 51, and the insertion portion 52 is inserted into the connector member mounting hole 41c of the gear case 41.
  • the external connector CN is electrically connected to a battery, a controller and the like (none of which are shown) mounted on the vehicle.
  • a pair of power supply terminals 53 and four signal terminals 54 are inserted (embedded) inside the connector connection portion 51 and the insertion portion 52.
  • Each power terminal 53 and each signal terminal 54 are formed in a substantially L shape along the shape of the connector member 50 by using brass or the like having excellent conductivity. Further, each power terminal 53 is thicker than each signal terminal 54, because a larger current flows through each power terminal 53 than each signal terminal 54.
  • each power supply terminal 53 protrudes from the insertion portion 52 and is exposed to the outside.
  • the exposed portion is a slit into which the other end side of each drive conductive member 25c (see FIG. 2) is inserted.
  • SL is formed.
  • FIG. 3 only the slit SL of one power supply terminal 53 is shown.
  • the other end side of each power terminal 53 is exposed inside the connector connecting portion 51, and is thereby electrically connected to each power terminal (not shown) on the external connector CN side. ing.
  • each signal terminal 54 is electrically connected to a sensor substrate 60 provided in the insertion portion 52.
  • the other end side of each signal terminal 54 is exposed inside the connector connecting portion 51, similarly to the other end side of each power supply terminal 53. Thereby, the other end side of each signal terminal 54 is electrically connected to each signal terminal (not shown) on the external connector CN side.
  • a seal member 55 made of an elastic member such as rubber is provided on the connector connection portion 51 side of the insertion portion 52, and the seal member 55 is mounted so as to surround the insertion portion 52.
  • the seal member 55 is arranged between the insertion portion 52 and the connector member mounting hole 41c with the connector member 50 mounted on the gear case 41 (see FIG. 1). This prevents rainwater, dust, and the like from entering from the outside of the gear case 41 toward the inside of the connector member mounting hole 41c.
  • the sensor board 60 is integrally provided in the insertion part 52.
  • the sensor substrate 60 is formed in a substantially rectangular shape, and includes a pair of long sides 61 and a pair of short sides 62.
  • One short side 62 side of the sensor substrate 60 is fixed to the insertion portion 52, whereby each short side 62 faces along the Y-axis direction, and each long side 61 faces along the Z-axis direction. ing.
  • One end side of the four signal terminals 54 is electrically connected to one short side 62 side of the sensor substrate 60, and the rotation sensor 70 is mounted on the other short side 62 side of the sensor substrate 60.
  • the sensor substrate 60 has the connector member 50 attached to the gear case 41 and is directed radially outward of the armature shaft 26 around the armature shaft 26. Has been extended.
  • 4 (a) and 4 (b) are explanatory views for explaining the positional relationship between the sensor magnet and the sensor substrate.
  • the other short side 62 side of the sensor substrate 60 is disposed on the radially outer side of the sensor magnet 30 via a gap SP, and in this gap SP, a bearing holding functioning as a partition wall is provided.
  • a cylinder 25b is arranged.
  • the dimension of the gap SP is set to a dimension that satisfies the following three conditions. That is, sufficient detection performance can be obtained by bringing the rotation sensor 70 as close as possible to the sensor magnet 30.
  • the sensor magnet 30 rotates, the sensor magnet 30 does not contact the bearing holding cylinder 25b, and the insertion portion 52 is attached to the connector member.
  • the sensor substrate 60 and the bearing holding cylinder 25b are not in contact with each other when inserted into the hole 41c.
  • FIG. 5 is an explanatory diagram for explaining the internal structure of the rotation sensor
  • FIG. 6 schematically shows a plurality of relative positions of the sensor magnet with respect to the rotation sensor, and an explanation for explaining the detection state of the magnetic flux component by the rotation sensor at each position.
  • FIG. 7 is an explanatory diagram for explaining the detection signal of the magnetic flux component by the rotation sensor and the output signal of the rotation sensor.
  • the rotation sensor 70 is a magnetic sensor that captures changes in the magnetic poles (S pole / N pole) of the sensor magnet 30 facing the rotation sensor 70, that is, the direction of the magnetic flux lines and changes thereof. . Thereby, the rotation sensor 70 can detect the rotation state of the armature shaft 26 (see FIG. 4), that is, the rotation direction and the rotation speed of the armature shaft 26.
  • the rotation sensor 70 includes a magnetoresistive element (MR element) as a sensor element, and is a GMR sensor applying a giant magnetoresistive effect phenomenon (Giant Magneto Resistance Effect).
  • the rotation sensor 70 includes a Y-axis direction element (first MR element) 71 whose electrical resistance value changes according to the magnitude of the magnetic flux component along the Y-axis direction, and the magnitude of the magnetic flux component along the Z-axis direction. And a Z-axis direction element (second MR element) 72 whose electric resistance value changes.
  • the rotation sensor 70 further includes a waveform conversion circuit 73, and the waveform conversion circuit 73 is inputted with sine wave signals (see FIG. 7) from the Y-axis direction element 71 and the Z-axis direction element 72, respectively. It has become.
  • the waveform conversion circuit 73 converts each input sine wave signal (Y-axis direction magnetic flux component / Z-axis direction magnetic flux component) into a rectangular wave signal and outputs it.
  • the Y-axis direction element 71 and the Z-axis direction element 72 of the rotation sensor 70 have two types of sine wave signals (solid line / dashed line) having a phase difference of 90 ° as shown in the upper part of FIG. Are each output. Thereafter, these sine wave signals are input to the waveform conversion circuit 73, and the waveform conversion circuit 73 has two types of rectangular wave signals (OUT1 / OUT2) having a phase difference of 90 ° as shown in the lower part of FIG. ), And the generated two types of rectangular wave signals are output.
  • the waveform conversion circuit 73 includes a first threshold value th1 on the positive side and a second threshold value th2 on the negative side. By comparing the two types of sine wave signals with the respective threshold values th1 and th2, The rising point and falling point of the rectangular wave signal (OUT1 / OUT2) are determined.
  • the rotation sensor 70 outputs two types of rectangular wave signals having a phase difference of 90 °, and these rectangular wave signals are input to a controller (not shown) mounted on the vehicle. ing. And a controller grasps
  • FIG. 8 shows an explanatory view for explaining the assembly procedure of the motor device of FIG.
  • the motor unit 20 in which the armature 24 and the brush holder 25 are assembled to the motor case 21 is prepared, and the gear case 41 is prepared.
  • the worm gear 31 forming the motor unit 20 is caused to face the worm gear housing portion 41a of the gear case 41, and the worm gear 31 is inserted into the worm gear housing portion 41a.
  • the brush holder 25 is abutted against the gear case 41.
  • the fastening screw 11 is screwed to the gear case 41 using a fastening tool (not shown), so that the motor case 21 and the gear case 41 are connected and integrated.
  • the insertion portion 52 side of the connector member 50 that is, the sensor substrate 60 side is caused to face the connector member mounting hole 41c.
  • the insertion portion 52 is inserted into the connector member mounting hole 41c, whereby the other end side of each driving conductive member 25c is inserted into the slit SL (see FIG. 3) on one end side of each power supply terminal 53, Electrically connected.
  • the connector member 50 is incorporated into the gear case 41 from the radially outer side of the armature shaft 26, and the mounting of the connector member 50 to the gear case 41 is completed.
  • connection strength between the connector member 50 and the gear case 41 is sufficient, but the connection strength between the connector member 50 and the gear case 41 is stronger. For this reason, both may be fixed by a fastening screw (not shown).
  • the worm wheel 42 is accommodated in the worm wheel accommodating portion 41b of the gear case 41, and the opening side of the gear case 41 is further sealed by a gear cover (not shown). Thereby, the motor apparatus 10 is completed.
  • the worm wheel 42 may be housed inside the worm wheel housing portion 41b before the connector member 50 is inserted and fixed in the gear case 41.
  • the rotation sensor 70 that is disposed on the radially outer side of the sensor magnet 30 via the gap SP and detects the rotation state of the armature shaft 26 is provided.
  • the sensor substrate 60 is provided so as to extend outwardly in the radial direction of the armature shaft 26 around the armature shaft 26. Therefore, it is not necessary to provide the sensor substrate 60 so as to straddle the armature shaft 26 as before.
  • the thickness dimension of the motor device 10 along the direction (Z-axis direction) intersecting the direction in which the sensor substrate 60 extends can be reduced, and the motor device 10 can be further reduced in size and weight.
  • the sensor substrate 60 can be gathered more compactly than before, the ratio of the sensor substrate 60 to the gear case 41 can be reduced, and the degree of freedom of arrangement of the fixing portion 41d with respect to the gear case 41 can be improved. Therefore, it is possible to improve the layout of the motor device 10 on the object to be attached.
  • the rotation sensor employs one GMR sensor having two MR elements that react to the magnetic flux lines formed by the sensor magnet 30, but the present invention is not limited to this.
  • Two inexpensive MR sensors having one MR element may be employed.
  • other magnetic sensors such as Hall IC can be employed.
  • the motor device 10 is used as a drive source of a power window device mounted on a vehicle.
  • the present invention is not limited to this, and other drive sources such as a sunroof device. Can also be used.
  • the motor device is used as a drive source for a power window device or a sunroof device mounted on a vehicle such as an automobile to open and close an opening / closing body such as a wind glass or a sunroof.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Selon la présente invention, un substrat de capteur (60), qui est disposé à l'extérieur d'un aimant de capteur (30) dans la direction radiale avec un espace (SP) entre ceux-ci et possède un capteur de rotation (70) qui détecte l'état de rotation d'un arbre d'armature (26) sur celui-ci, est disposé de manière à étendre l'extérieur de l'arbre d'armature (26) dans la direction radiale avec l'arbre d'armature (26) au centre. Ainsi, le substrat de capteur (60) n'a pas besoin d'être disposé de manière à chevaucher l'arbre d'armature (26), comme dans l'état antérieur de la technique. Par conséquent, l'épaisseur d'un dispositif de moteur est réduite le long de l'axe Z, permettant à la taille et au poids d'être réduits. De plus, puisque une liberté de positionnement d'une partie de fixation peut être améliorée par réalisation du substrat de capteur (60) plus compact, la topologie d'objets à fixer au dispositif de moteur est améliorée.
PCT/JP2014/052719 2013-02-14 2014-02-06 Dispositif de moteur WO2014125982A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013026202A JP6259574B2 (ja) 2013-02-14 2013-02-14 モータ装置
JP2013-026202 2013-02-14

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WO2014125982A1 true WO2014125982A1 (fr) 2014-08-21

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Cited By (1)

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CN108781019A (zh) * 2016-03-24 2018-11-09 罗伯特·博世有限公司 电机和用于制造电机的方法

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Publication number Priority date Publication date Assignee Title
JP2019129566A (ja) * 2018-01-23 2019-08-01 株式会社ミツバ モータ装置
JP7175676B2 (ja) * 2018-08-28 2022-11-21 株式会社ミツバ モータ装置

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WO1998027640A1 (fr) * 1996-12-17 1998-06-25 Robert Bosch Gmbh Moteur electrique
JP2003164113A (ja) * 2001-11-21 2003-06-06 Mabuchi Motor Co Ltd ウォーム減速機付小型モータの回転検出装置
JP2010263697A (ja) * 2009-05-07 2010-11-18 Denso Corp 電動機

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JP2007252097A (ja) * 2006-03-16 2007-09-27 Mitsuba Corp ブラシレスモータ
JP5709481B2 (ja) * 2010-11-22 2015-04-30 日本電産サンキョー株式会社 モータ

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Publication number Priority date Publication date Assignee Title
WO1998027640A1 (fr) * 1996-12-17 1998-06-25 Robert Bosch Gmbh Moteur electrique
JP2003164113A (ja) * 2001-11-21 2003-06-06 Mabuchi Motor Co Ltd ウォーム減速機付小型モータの回転検出装置
JP2010263697A (ja) * 2009-05-07 2010-11-18 Denso Corp 電動機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108781019A (zh) * 2016-03-24 2018-11-09 罗伯特·博世有限公司 电机和用于制造电机的方法
US11075565B2 (en) 2016-03-24 2021-07-27 Robert Bosch Gmbh Electrical machine, and methods for producing an electrical machine

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