JP2005176591A - Hybrid motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain a position of a movable element in a compact and simple constitution for combining a motor function and a retarder function, while reducing a power consumption. <P>SOLUTION: In a hybrid motor (1), spaced coils (21, 22) are wound onto a stator (10), and a pole piece (11) formed at one end of the coil (21), a pole piece (12) formed at one end of the coil (22), and a pole piece (13) formed between both coils face the motor movable element (30). A pole piece (14) formed at the other end of the coil (21), and a pole piece (15) formed at the other end of the coil (22) face the retarder movable element (40). A magnet (31) facing the pole piece (11, 13), and a magnet (32) facing the pole piece (12, 13) are disposed in the motor movable element (30). A motor driving state and a retarder driving state are switched by switching a direction of a current flowing in both coils (21, 22). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hybrid motor having both a motor function and a retarder function.

2. Description of the Related Art Conventionally, there are electromagnetic actuators or motors that can move a mover within a predetermined movement region and hold it at an arbitrary position.
Japanese Patent Laid-Open No. 11-252889

  However, in such a conventional motor, when the load increases, there is a problem that power consumption increases and the motor size increases in order to hold the mover at an arbitrary position.

  As a countermeasure against this, a retarder can be used to maintain the position of the mover. However, when the motor and the retarder are provided separately, there is a problem that the respective spaces must be secured and the number of parts as a whole increases.

  The present invention has been made to solve the above-described problems. By combining the motor function and the retarder function, the position of the mover can be maintained with a compact and simple configuration and low power consumption. An object of the present invention is to provide a hybrid motor that can be used.

  A hybrid motor according to a first aspect of the present invention is a hybrid motor including a stator in which a plurality of magnetic pole pieces are formed by winding a plurality of coils at a predetermined interval, and a mover. A mover portion for a motor arranged with a magnet at a position facing the magnetic pole piece of the stator on the mover, and a mover portion for retarder arranged at a position facing the magnetic pole piece of the stator A magnetic flux generation state in which a magnetic path is formed from the magnetic pole piece of the stator opposed to the motor mover portion, and the mover operates as a motor, by selecting a current flowing through the coil. A magnetic path is formed in the retarder movable part from the magnetic pole piece of the stator facing it, and a magnetic flux generation state in which the movable element operates as a retarder can be selected.

  According to a second aspect of the present invention, there is provided a hybrid motor comprising a motor mover and a retarder mover connected thereto, wherein the first and second coils are arranged on the stator made of a magnetic material. Is wound at a required interval to form the first and second magnetic pole pieces and the third magnetic pole piece positioned between the two magnetic pole pieces so as to face the motor movable element, and the fourth and second magnetic pole pieces. 5 pole pieces are formed so as to face the retarder mover, and the motor mover has a first magnet facing the first and third pole pieces, and the second and third pole pieces. By arranging a second magnet facing the piece and having a facing surface opposite in polarity to the first magnet and switching the direction of the current flowing through the coils, the stator for the motor is moved from the stator. Motor drive through which a magnetic path is formed State and is characterized in that the said stator and configured to be able to switch between the retarder drive state magnetic path is formed through the movable element for the retarder.

  A hybrid motor according to a third aspect of the present invention is the hybrid motor according to the second aspect, wherein the direction of the magnetic flux generated by the first coil and the direction of the magnetic flux generated by the second coil when the motor is driven. When the retarder is driven, the direction of the magnetic flux generated by the first coil and the direction of the magnetic flux generated by the second coil are the same direction. It is characterized by flowing a current through both coils so that

  A hybrid motor according to a fourth aspect of the present invention is the hybrid motor according to the second aspect, wherein when the retarder drive is switched to the motor drive, the amount of current flowing through the two coils is adjusted to allow the retarder mover to remain. The residual magnetic flux is eliminated by generating a magnetic flux in a direction opposite to the magnetic flux from the stator to the retarder movable element.

  A hybrid motor according to a fifth aspect of the present invention is the hybrid motor according to the second aspect, wherein a magnetic flux required from the stator to the retarder movable element is adjusted by adjusting an amount of current flowing through the coils when the motor is driven. By generating the above, the driving force by the motor mover is controlled by the braking force by the retarder mover.

  As described above, the present invention is a hybrid motor including a stator in which a plurality of magnetic pole pieces are formed by winding a plurality of coils at a predetermined interval, and a mover. Forming a mover portion for a motor arranged with a magnet at a position facing the magnetic pole piece of the stator, and a mover portion for a retarder arranged at a position facing the magnetic pole piece of the stator, By selecting a current to be passed through the coil, a magnetic path is formed from the magnetic pole piece of the stator facing the motor mover portion and the mover operates as a motor, and a movable state for the retarder Since the magnetic path is formed from the magnetic pole piece of the stator opposite to the child part and the magnetic flux generating state in which the mover operates as a retarder can be selected, it is possible to select a compact and simple structure with low power consumption. There is an effect that it is possible to realize the position retention of the mover in power.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing an embodiment of a hybrid motor according to the present invention. The hybrid motor 1 includes a stator 10, a motor mover 30, and a retarder mover 40 connected thereto.

  The stator 10 is made of a magnetic material, and two coils 21 and 22 are wound at a predetermined interval.

  Thus, in the stator 10, the magnetic pole piece 11 is provided at the end of the coil 21, the magnetic pole piece 12 is provided at the end of the coil 22, and the magnetic pole piece 13 is provided between the coils 21 and 22. It is formed to face.

  A magnet 31 facing the magnetic pole pieces 11 and 13 and a magnet 32 facing the magnetic pole pieces 12 and 13 are attached to the motor mover 30, and the opposing surface of the magnet 31 and the opposing surface of the magnet 32 are opposite in polarity. It has become.

  That is, the magnet 31 faces the magnetic pole pieces 11 and 13, and the facing surface is magnetized to the S pole. The magnet 32 faces the magnetic pole pieces 12 and 13, and the facing surface is magnetized to the N pole. The magnets 31 and 32 are integrally fixed to the motor mover 30.

  The pole piece 11 faces the magnet 31, the pole piece 12 faces the magnet 32, and the pole piece 13 faces the magnets 31, 32.

  The pole pieces 11, 12, 13 and the magnets 31, 32 are usually opposed to each other with a mechanical gap of about 0.4 mm. A coupling magnetic path member 33 is disposed with the motor mover 30 facing the pole pieces 11, 12, and 13 interposed therebetween.

  The stator 10 is formed with a pole piece 14 at the end of the coil 21 and a pole piece 15 at the end of the coil 22 so as to face the retarder mover 40, respectively.

  The pole pieces 14 and 15 and the retarder mover 40 are arranged to face each other without a mechanical gap.

  The motor mover 30 and the retarder mover 40 are connected to each other by an appropriate connecting portion 50.

  FIG. 2 shows a conceptual diagram of a drive circuit of the hybrid motor 1. As shown in FIG. 2, the coil 21 and the coil 22 are connected in series, and are connected to the power source P and the ground G through six switches ABCDEF.

  The winding direction of the coil 21 and the winding direction of the coil 22 are set in reverse. Then, motor drive, retarder drive, and demagnetization drive are selectively performed by selecting opening and closing of each switch.

  FIG. 3 shows the motor drive of the hybrid motor 1. Switches A and D are turned on and the others are turned off. The power source P, the coil 21, the coil 22, and the ground G are connected in series, and currents i1 and i2 flow through the coils 21 and 22, respectively.

  Since the winding directions of the coils 21 and 22 are opposite to each other, the magnetic flux Φ1 and the magnetic flux Φ2 are actually the same in size but opposite to each other. The magnetic flux generated at this time is shown in FIG.

  Since the polarities of the magnetic pole pieces 14 and 15 facing the retarder mover 40 are the same, no magnetic flux flows through the retarder mover 40, and the attraction / magnetization between the magnets 31 and 32 and the magnetic pole pieces 11, 12, and 13 is performed. Only the repulsive force works, and the hybrid motor 1 is driven by the connecting portion 50 as a linear motor. At this time, a driving force as shown in FIG. 5 is generated.

  When a current difference occurs between the two coils 21 and 22, the polarity balance of the magnetic pole pieces 14 and 15 is lost, magnetic flux flows through the retarder mover 40, retarder attracting force is generated, and the connecting portion 50 does not move. There is. As a countermeasure, the coil 21 and the coil 22 are connected in series, and their current values are kept constant.

  FIG. 6 shows the retarder drive of the hybrid motor 1. Switches A, C, and F are turned on and the others are turned off. Currents i1 and i2 flow through the coils 21 and 22, respectively. At this time, the magnetic flux Φ1 and the magnetic flux Φ2 are the same in magnitude and in the same direction. The magnetic flux generated at this time is shown in FIG.

  Since the polarities of the magnetic pole pieces 14 and 15 facing the retarder mover 40 are different, a magnetic flux flows through the retarder mover 40 to generate an attractive force, and the hybrid motor 1 becomes a retarder. At this time, if the polarity of the magnet 31 and the magnetic pole piece 11 and the polarity of the magnet 32 and the magnetic pole piece 12 are set to be opposite polarities, the magnets 31 and 32 are not demagnetized.

  When the retarder suction force is generated, a frictional force as shown in FIG. 8 is generated. A large force is obtained with a smaller magnetomotive force than when the motor is driven, and the connecting portion 50 is held. Low power consumption and high holding power.

  FIG. 9 shows the demagnetization drive of the hybrid motor 1. When switching from retarder driving to motor driving, the connecting portion 50 may not move as it is due to the residual magnetic flux of the retarder mover 40. The demagnetization drive prevents such a situation in advance.

  That is, the switches A, D, and E are turned on and the others are turned off. When the switches A and D are turned on, currents i1 and i2 in the same direction as the motor drive flow through the coils 21 and 22, respectively. As a result, the same magnetic flux as that generated by the motor is generated.

  However, in this case, since the switch E is also turned ON, a current larger than the coil 21 flows through the coil 22. When a current difference is generated in the coils 21 and 22, magnetic flux flows through the retarder mover 40. Moreover, the magnetic flux in this case flows in a direction that cancels the magnetic flux generated when the retarder is driven. FIG. 10 shows the demagnetization drive generated magnetic flux.

  FIG. 11 shows changes in the current during demagnetization driving, the magnetic flux of the retarder mover 40, and the position of the connecting portion 50. When the magnetic flux of the retarder mover 40 becomes zero, the attractive force becomes zero and the connecting portion 50 starts to move. If the switch E is turned OFF at this time, the motor is driven.

  As described above, by executing the ON / OFF processing of the switch E in parallel with the motor drive, the demagnetization remaining by the retarder drive can be performed.

  Further, when the switch E is turned on when the motor is driven to generate a magnetic flux in the retarder mover 40, an attractive force is generated. The driving force of the motor mover 30 is reduced by the frictional force. Thereby, it is possible to drive the brake while applying a brake to the connecting portion 50, and it is possible to control the moving speed of the connecting portion 50.

  When the structure of the connecting portion 50 is as shown in FIG. 12, the retarder holding force can be amplified by the connection ratio x: y between the retarder mover 40 and the motor mover 30.

  FIG. 13 is a schematic plan view showing an example in which the arrangement of the retarder mover 40 is changed, and FIG. 14 is a front view thereof. In this way, the retarder mover 40 can be disposed at any position where the magnetic poles can be balanced outside the coils 21 and 22.

  FIG. 15 is a schematic front view showing an example in which the hybrid motor according to the present invention is applied to a torque motor, and FIG. 16 is a bottom view thereof. FIG. 17 is a schematic plan view showing an example in which the arrangement of the retarder mover 140 is changed. Since this hybrid motor (torque motor) 101 is basically the same as the hybrid motor 1 shown in FIG. 1, the same parts as those shown in FIG. And

  The hybrid motor 1 shown in FIG. 1 moves linearly, whereas the hybrid motor 101 shown in FIG. 17 moves at a rotational angle, and the same applies to those shown in FIGS.

  In this hybrid motor 101, a circular motor movable element 130 having magnets 131 and 132 is disposed in a circular recess of the stator 110 so as to be rotatable at an angle, and is connected to the motor movable element 130 by a connecting portion 150. A retarder mover 140 is disposed in substantial contact with the stator 110.

  The stator 110 is formed with a magnetic pole piece 111 that faces the magnet 131, a magnetic pole piece 112 that faces the magnet 132, and a magnetic pole piece 113 that faces the magnets 131 and 132. The stator 110 is formed with magnetic pole pieces 114 and 115 facing the retarder movable element 140.

  The hybrid motor 101 selectively performs motor drive, retarder drive, and demagnetization drive, similarly to the hybrid motor 1 shown in FIG. The magnetic flux generated when the motor is driven is shown in FIG. 18, and the magnetic flux generated when the retarder is driven is shown in FIG.

  Such a hybrid motor 101 can be applied to, for example, a fluid control valve. A large amount of electric power is required to hold the position against the flow of the fluid, but if this hybrid motor 101 is used, the position can be easily held by performing the retarder drive. Further, by combining the motor drive and the retarder drive, it is possible to control with a strong holding force and drive with power saving even in an environment where torque is required with a simple configuration.

  The hybrid motor 1 (101) as described above can be variously changed or modified. For example, the number and arrangement of the magnetic pole pieces 11 to 15 and (111 to 115) in the stator 10 and (110) can be arbitrarily set together with the number and arrangement of the coils 21 and 22 (121 and 122).

  For example, the number and arrangement of the magnets 31, 32, (131, 132) in the motor movers 30, (130) can be arbitrarily set.

  Further, for example, the motor mover 30 (130) and the retarder mover 40 (140) are fixed in their entirety, including the connecting portions 50 and (150) and the connecting magnetic path member 33 as required. The child 10 (110) can be referred to (configured) as a mover. In this case, it is possible to distinguish the motor mover 30 (130) as the motor mover part and the retarder mover 40 (140) as the retarder mover part with respect to the mover indicating the whole. is there.

  Summarizing the above, the hybrid motor of the present invention is a hybrid motor including a stator in which a plurality of magnetic pole pieces are formed by winding a plurality of coils at a predetermined interval, and a mover, A mover portion for a motor arranged with a magnet at a position facing the magnetic pole piece of the stator on the mover, and a mover portion for retarder arranged at a position facing the magnetic pole piece of the stator A magnetic flux generation state in which a magnetic path is formed from the magnetic pole piece of the stator opposed to the motor mover portion, and the mover operates as a motor, by selecting a current flowing through the coil. A magnetic path is formed in the retarder movable element portion from the magnetic pole piece of the stator facing it, and a magnetic flux generation state in which the movable element operates as a retarder can be selected.

  Since the hybrid motor of the present invention is configured as described above, the following various effects are obtained.

(1) Low power consumption and high rigidity during the holding operation, low rigidity when the drive is OFF, and a wide dynamic range with respect to the load.

(2) Since the magnetic circuit is shared, a compact configuration can be realized.

(3) Responsiveness and controllability are improved by performing demagnetization driving when switching from retarder driving to motor driving.

(4) By changing the balance of the coil current while the motor is being driven, it is possible to move the connecting portion while applying a brake to the retarder mover, thereby improving controllability.

(5) The retarder holding force can be amplified by setting the coupling ratio between the motor mover and the retarder mover.

1 is a schematic diagram showing an embodiment of a hybrid motor according to the present invention. It is a conceptual diagram of the drive circuit of the hybrid motor of FIG. It is a figure which shows the motor drive of the hybrid motor of FIG. It is a figure which shows the magnetic flux which generate | occur | produces at the time of a motor drive. It is a figure which shows the driving force generate | occur | produced at the time of a motor drive. It is a figure which shows the retarder drive of the hybrid motor of FIG. It is a figure which shows the magnetic flux which generate | occur | produces at the time of retarder drive. It is a figure which shows the frictional force generate | occur | produced at the time of retarder drive. It is a figure which shows the demagnetization drive of the hybrid motor of FIG. It is a figure which shows the magnetic flux which generate | occur | produces at the time of a demagnetization drive. It is a figure which shows the change of each part at the time of a demagnetization drive. It is a figure which shows the structure change of a connection part. It is a typical top view which shows the example which changed arrangement | positioning of the needle | mover for retarders. It is a front view of the thing of FIG. It is a typical front view which shows an example which applied the hybrid motor by this invention to the torque motor. It is a bottom view of the thing of FIG. It is a typical top view which shows the example which changed arrangement | positioning of the needle | mover for retarders. It is a figure which shows the magnetic flux which generate | occur | produces at the time of a motor drive. It is a figure which shows the magnetic flux which generate | occur | produces at the time of retarder drive.

Explanation of symbols

1,101 Hybrid motor 10, 110 Stator 11, 12, 13, 14, 15 Magnetic pole piece 111, 112, 113, 114, 115 Magnetic pole piece 21, 22, 121, 122 Coil 30, 130 Motor movable element 31, 32 , 131, 132 Magnet 33 Connecting magnetic path member 40, 140 Retarder mover 50, 150 connecting portion

Claims (5)

A hybrid motor including a stator in which a plurality of magnetic pole pieces are formed by winding a plurality of coils at a predetermined interval, and a mover,
A mover portion for a motor arranged on the mover with a magnet at a position facing the magnetic pole piece of the stator, and a mover portion for a retarder arranged at a position facing the magnetic pole piece of the stator, Form the
By selecting a current to flow through the coil, a magnetic path is formed from the stator pole piece facing the motor mover portion, and a magnetic flux generating state in which the mover operates as a motor, and for the retarder A magnetic path is formed from the magnetic pole piece of the stator opposite to the mover portion, and a magnetic flux generation state in which the mover operates as a retarder can be selected.
A hybrid motor characterized by that. A hybrid motor comprising a motor mover and a retarder mover connected thereto,
The first and second magnetic pole pieces and the third magnetic pole piece positioned between the two magnetic pole pieces are wound on the motor by winding the first and second coils around the stator made of a magnetic material at a predetermined interval. And the fourth and fifth magnetic pole pieces are formed so as to face the retarder mover,
The motor mover has a first magnet that faces the first and third magnetic pole pieces, a second magnet that faces the second and third magnetic pole pieces, and a surface opposite to the first magnet. And a second magnet forming
By switching the direction of the current flowing through the coils, a motor driving state in which a magnetic path is formed from the stator through the motor mover and a magnetic path is formed from the stator through the retarder mover. Retarder drive state can be switched.
A hybrid motor characterized by that.   When the motor is driven, a current is passed through both coils so that the direction of the magnetic flux generated by the first coil is opposite to the direction of the magnetic flux generated by the second coil, and when the retarder is driven 3. The hybrid according to claim 2, wherein a current is passed through both coils so that the direction of the magnetic flux generated by the first coil is the same as the direction of the magnetic flux generated by the second coil. motor.   When switching from the retarder drive to the motor drive, the amount of current flowing through the coils is adjusted to generate a magnetic flux in the opposite direction to the residual magnetic flux of the retarder mover from the stator to the retarder mover. The hybrid motor according to claim 2, wherein the residual magnetic flux is eliminated.   When the motor is driven, the amount of current flowing through the coils is adjusted to generate a required magnetic flux from the stator to the retarder mover, so that the driving force by the motor mover is driven by the retarder mover. The hybrid motor according to claim 2, wherein the hybrid motor is controlled by a braking force.

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