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WO2003028191A1 - Moteur vibrant sans balais - Google Patents

Moteur vibrant sans balais Download PDF

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Publication number
WO2003028191A1
WO2003028191A1 PCT/JP2002/009643 JP0209643W WO03028191A1 WO 2003028191 A1 WO2003028191 A1 WO 2003028191A1 JP 0209643 W JP0209643 W JP 0209643W WO 03028191 A1 WO03028191 A1 WO 03028191A1
Authority
WO
WIPO (PCT)
Prior art keywords
base member
vibration motor
brushless vibration
motor according
motor
Prior art date
Application number
PCT/JP2002/009643
Other languages
English (en)
Japanese (ja)
Inventor
Hitoshi Sakaba
Shinya Minakuchi
Hideaki Nakamura
Original Assignee
Nidec Copal Corporation
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
Priority claimed from JP2001285629A external-priority patent/JP2003092854A/ja
Priority claimed from JP2001285590A external-priority patent/JP2003088805A/ja
Priority claimed from JP2001301262A external-priority patent/JP2003111374A/ja
Application filed by Nidec Copal Corporation filed Critical Nidec Copal Corporation
Priority to KR20037006070A priority Critical patent/KR100909716B1/ko
Publication of WO2003028191A1 publication Critical patent/WO2003028191A1/fr

Links

Classifications

    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
    • H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • 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

Definitions

  • the present invention relates to a brushless vibration motor suitably used for various portable communication devices and amusement devices.
  • Various mobile communication devices such as mobile phones are provided with a vibration generation function for silent notification.
  • a vibration motor is used as the vibration source.
  • vibrating motors that are powerful have been inexpensive and have low power consumption with brushes.
  • brushless vibration motors have been adopted for the purpose of improving reliability.
  • an object of the present invention is to provide a brushless vibration motor that can be reduced in size and cost.
  • a brushless vibration motor includes: a base member having a mounting surface and a component mounting surface; a circuit board, a flux plate, two coils / and a Hall element provided on the component mounting surface side of the base member; A shaft disposed between the two coils, a rotor fixed to the shaft and rotating integrally with the shaft, a magnet provided on the rotor so as to face the two coils, and a rotor And a weight arranged to be biased toward.
  • the number of coils is two. By setting the number of coils to two as described above, cost can be reduced as compared with a motor having three or more coils. Also, there is space for the small number of coils. By effectively utilizing and mounting other components in the space, the size of the motor can be reduced. In addition, since this motor is equipped with a flux plate, the start of the motor becomes smooth.
  • the brushless vibration motor according to the present invention preferably includes a motor driving element provided on the component mounting surface side of the base member. As described above, by providing the motor driving element on the component mounting surface side of the base member, the convenience in using the motor is improved as compared with the case where the driving circuit is provided outside the motor.
  • the motor driving element is provided below a region where the rotor rotates.
  • the brushless vibration motor according to the present invention includes a cover that covers the base member and houses therein a circuit board, a flux plate, two coils, a hall element, a shaft, a rotor, a magnet, and a weight.
  • a cover that covers the base member and houses therein a circuit board, a flux plate, two coils, a hall element, a shaft, a rotor, a magnet, and a weight.
  • the driving system is preferably a single-phase bipolar system, and more preferably a two-phase bipolar system. This simplifies the driving control of the motor, and simplifies the driving circuit for driving the motor and the wiring on the circuit board. Also, the number of required Hall elements is reduced to one, and the cost can be further reduced.
  • a brushless vibration motor according to the present invention is provided on a mounting surface side of a base member, and is electrically connected to a circuit board, and includes a terminal made of a plate spring having elasticity in a direction in which a shaft extends. Is preferred. In this way, when mounting the motor on a device such as a mobile phone, it is possible to perform an assembling operation in which the motor is pressed down from the extending direction of the shaft without using soldering. Therefore, the terminal Can easily be electrically connected to other parts, and the workability in mounting on equipment is improved. Moreover, providing terminals on the mounting surface of the base member is advantageous in promoting miniaturization of equipment.
  • the terminal is in a cantilever support state in which one end is fixed to the circuit board. In this way, it is possible to keep the electrical connection strength of the terminals appropriately by effectively utilizing the elasticity of the panel panel in a state where the motor is mounted.
  • the brushless vibration motor according to the present invention preferably includes a pair of terminals, and the pair of terminals is preferably arranged on a straight line so that the mounting contact portions are separated from each other.
  • the pair of terminals can be aligned in a straight line by utilizing the width of the mounting surface of the base member, whereby the mounting contact portions of the pair of terminals are separated as much as possible. be able to. Therefore, it is possible to prevent a short circuit between the mounting contacts as much as possible.
  • the brushless vibration motor according to the present invention include a pair of terminals, and each of the pair of terminals is arranged to be closer to one side of the mounting surface of the base member.
  • each terminal is arranged at the center of the base member, there is a possibility that the polarity of each terminal is wrong and the terminal is mounted on a device. Therefore, it is preferable to dispose each terminal to one side of the base member to prevent such mounting errors.
  • a brushless vibration motor includes: a spring plate piece integrally formed on a base member so as to extend along a reference surface including a mounting surface of the base member; and a metal terminal attached to the spring plate piece.
  • the tip of the metal terminal protrudes from the reference surface in the non-mounting state, and is displaced toward the reference surface against the spring force of the spring plate piece in the mounting state.
  • the spring force of the spring plate piece The distal end of the metal terminal is pressed against the substrate with a desired pressing force, and the distal end of the metal terminal and the power supply unit of the substrate come into contact with a desired contact pressure, thereby ensuring conduction.
  • the terminal by configuring the terminal with the spring plate piece integrally formed on the base member and the metal terminal, it is possible to sufficiently suppress the increase in the size of the motor and the cost. Further, according to this terminal structure, it is possible to secure conduction with a stable pressing force by the spring force of the spring plate piece, so that the power supply can be stabilized.
  • the brushless vibration motor according to the present invention the spring plate piece may have a cantilevered support structure or a double-sided support structure.
  • the base member is formed of fiber-reinforced plastic. This is suitable for applying a desired spring force to the spring plate piece.
  • the above-described brushless vibration motor may be mounted to form a vibration notification device, a mobile phone, a mobile information terminal device, and an amusement device.
  • a terminal structure of a motor according to the present invention is a terminal structure of a motor for supplying electric power to a motor including a base member, the base member extending along a reference surface including a mounting surface of the base member. And a metal terminal attached to the spring plate piece, the tip of the metal terminal protruding from the reference surface in the non-mounting state, and the spring plate in the mounting state. It is displaced toward the reference plane against the spring force of one part.
  • FIG. 1 is a side sectional view showing the configuration of the brushless vibration motor according to the first embodiment.
  • FIG. 2 is a plan view showing the configuration of the brushless vibration motor according to the first embodiment (with the cover removed).
  • FIG. 3 is a plan view showing the configuration of the brushless vibration motor according to the first embodiment (with the cover and the rotor removed).
  • FIG. 4A is a diagram showing a circuit configuration of a coil when driven by a single-phase bipolar system.
  • FIG. 4B is a graph illustrating a torque obtained by a single-phase bipolar system.
  • FIG. 5A is a diagram illustrating a circuit configuration of a coil when driven by a two-phase bipolar system.
  • FIG. 5B is a graph illustrating the torque obtained by the two-phase eupola method.
  • FIG. 6 is a plan view showing a modified example of the brushless vibration motor according to the first embodiment.
  • FIG. 7 is a side sectional view showing a configuration of a brushless vibration motor according to the second embodiment.
  • FIG. 8 is a plan view showing the configuration of the brushless vibration motor according to the second embodiment.
  • FIG. 9 is a plan view showing a configuration of a brushless vibration motor according to the second embodiment (with a cover and a rotor removed).
  • FIG. 10 is a side sectional view showing the configuration of a brushless vibration motor according to the third embodiment.
  • FIG. 11 is a plan view showing a configuration of a brushless vibration motor according to the third embodiment (with a cover removed).
  • FIG. 12 is a plan view showing a configuration of a brushless vibration motor according to the third embodiment (with a cover and a rotor removed).
  • FIG. 13 is a side sectional view showing a configuration of a brushless vibration motor according to the third embodiment (cut around terminals 42 and 44).
  • FIG. 14 is a view of the brushless vibration motor shown in FIG. 13 as viewed from the mounting surface side.
  • FIG. 15 is a diagram showing a modification of the brushless vibration motor according to the third embodiment.
  • FIG. 16 is a side sectional view showing the configuration of the brushless vibration motor according to the fourth embodiment.
  • FIG. 17 is a plan view showing the configuration of the brushless vibration motor according to the fourth embodiment (with the cover removed).
  • FIG. 18 is a plan view showing a configuration of a brushless vibration motor according to the fourth embodiment (with a cover and a rotor removed).
  • FIG. 19 is a plan view showing the configuration of the base member.
  • FIG. 20 is a diagram for explaining how the spring plate piece is pushed up against the spring force via the metal terminal.
  • FIG. 21 is a plan view showing a modified example of the brushless vibration motor according to the fourth embodiment having another terminal structure (with a cover and a rotor removed).
  • FIG. 22 is a side sectional view showing the configuration of the brushless vibration motor shown in FIG.
  • FIG. 23 is an exploded perspective view showing a mobile phone equipped with a brushless vibration motor.
  • FIG. 24 is a partially broken perspective view showing a portable information terminal device equipped with a brushless vibration motor.
  • FIG. 25 is an exploded perspective view showing an amusement machine equipped with a brushless vibration motor.
  • FIG. 1 is a side sectional view showing the configuration of the brushless vibration motor according to the first embodiment.
  • FIGS. 2 and 3 are plan views showing the configuration of the brushless vibration motor. . 2 shows a state in which the cover 38 is removed for the sake of explanation, and FIG. 3 shows a state in which the rotor 30 is further removed.
  • the brushless vibration motor 10 has a mounting surface 12 a mounted on a mounting board (not shown) and a component mounting surface opposed thereto. It has a base member 12 having a surface 12b.
  • the base member 12 is made of a material such as plastic, fiber reinforced plastic (FRP: GFRP, CFRP), and has an approximately square outer shape.
  • a flux plate 14 is provided on the component mounting surface 12 b of the base member 12.
  • the flux plate 14 is formed of, for example, a silicon steel plate, and has a function of smoothing the start of the motor 10.
  • a circuit board 16 is provided on the component mounting surface 12 b of the base member 12 and on the flux plate 14.
  • the circuit board 16 has a substantially square outer shape, and has a size similar to that of the base member 12.
  • the circuit board 16 is formed from a flexible wiring board or the like, and has printed wiring on the upper surface.
  • a bearing device 18 is provided at the center of the component mounting surface 12 b of the base member 12.
  • the shaft 20 is rotatably supported by the bearing device 18.
  • two coils 22 are symmetrically arranged with the shaft 20 interposed therebetween.
  • these coils 22 are formed of flat coils.
  • a Hall element (magnetoelectric conversion element) 24 for detecting magnetism and a motor drive element 26 are provided in a region on the circuit board 16 and between these two coils 22.
  • the other electronic elements 28 are mounted.
  • the rotor 20 is fixed to the shaft 20 so as to rotate integrally with the shaft 30.
  • a ring-shaped magnet is provided on the lower surface of the rotor 30 so as to face the coil 22 provided on the circuit board 16.
  • G 32 are provided.
  • the rotor 30 has a disk shape whose basic shape is defined by a radius R, and about half of its side surface is extended radially outward by AR, and a wide area 30a is formed. It is formed. An arc-shaped slit 34 is formed in the wide area 30a. Further, a portion of a weight 36 made of a material having a large specific gravity, such as tundane, is introduced into the slit 34 from below the rotor 30 and fixed by caulking. As described above, since the weight 36 is biased to the rotor 30 and is imbalanced, the vibration is generated with the rotation of the shaft 20.
  • a cover 38 is provided on the base member 12 as shown in FIG.
  • a bearing device 40 for rotatably supporting the shaft 20 is provided on the upper surface of the cover 38.
  • a flux plate 14 In the space formed by the cover 38 and the base member 12, a flux plate 14, a circuit board 16, a coil 22, a motor drive element 26, a hall element 24, a bearing device 18, and a shaft 20, rotor 30, magnet 32, weight 36, etc. are accommodated, and the intrusion of dust and the like from the outside is suppressed. As a result, occurrence of motor failure is suppressed, and stable operation can be performed for a long period of time.
  • a coil 22 In the motor 10 having such a configuration, as shown in FIG. 2, a coil 22, a motor driving element 26, a hall element 24, and other electronic elements 28 are arranged below a region where the rotor 30 rotates. Have been. Therefore, the space on the circuit board 16 is effectively used, and the size of the motor 10 is reduced.
  • the magnet 32 is preferably a six-pole magnet.
  • the opening angle ⁇ ; of the coil 22 is 60 degrees as shown in FIG.
  • the opening angle of the coil 22 becomes 90 degrees, the coil 22 becomes large, and the available space on the circuit board 16 tends to be small.
  • the magnet 32 is preferably a six-pole magnet.
  • the drive system is preferably a single-phase bipolar system, and more preferably a two-phase unipolar system.
  • the single-phase bipolar system has a circuit configuration in which two coils 22 are connected in series, as shown in Fig. 4 ⁇ . Then, based on the timing signal generated based on the signal from the Hall element 24, the combination of potentials (high (H), low (L The desired torque can be obtained by switching) and). The torque at this time is represented using one torque curve (indicated by C1) and another torque curve (indicated by C2) having a different polarity from the torque curve, as shown in FIG. 4B.
  • the torque indicated by the arrow T can be obtained.
  • a circuit configuration is formed in which one ends of two coils 22 are grounded. Then, based on the timing signal generated based on the signal from the Hall element 24, the motor driving element 26 switches on / off of the application of the potential to each of the terminals 42, 44 by switching. A desired torque can be obtained. At this time, as shown in Fig. 5 ⁇ , the torque was calculated using the torque carp (indicated by C1) in the coil 22-1 and the torque curve (indicated by C2) in the coil 22-2. Is represented by Based on the timing signal generated based on the signal from the Hall element 24, at the time corresponding to the point ⁇ , the switch By performing the ching, the torque indicated by the arrow T can be obtained.
  • the driving method is the single-phase bipolar method or the two-phase bipolar method
  • the driving control of the motor 10 is simplified, and the driving circuit and the circuit board 1 built in the motor driving element 26 are simplified.
  • the wiring on 6 is simplified. Also, only two coils are required, and only one Hall element 24 is required. As a result, the cost for manufacturing the motor 10 is further reduced, and the size and weight of the motor 10 are reduced.
  • the number of the coils 22 provided on the circuit board 16 is two.
  • cost can be reduced as compared with a motor having three or more coils.
  • the space on the circuit board 16 is effectively used, and the motor drive element 26, the hall element 24, and other electronic elements 28 are mounted in the space, thereby reducing the size of the motor 10. It becomes possible.
  • the brushless vibration motor 10 since the brushless vibration motor 10 according to the first embodiment includes the flux plate 14, the startup of the motor 10 can be performed smoothly.
  • the brushless vibration motor 10 since the brushless vibration motor 10 according to the first embodiment includes the cover 38 that covers the base member 12, each member provided on the base member 12 is covered by the cover 38. Intrusion of dust and the like is suppressed. As a result, occurrence of a failure in the motor 10 is suppressed, and stable operation can be performed for a long period of time.
  • the drive system is a single-phase bipolar system or a two-phase unipolar system
  • the drive control of the motor 10 is simplified, and the motor drive element 26
  • the driving circuit and the wiring on the circuit board 16 incorporated in the device are simplified.
  • only one Hall element 24 is required. Thereby, the cost for manufacturing the motor 10 can be further reduced.
  • the corners (41 in FIG. 3) may be removed as shown in FIG. This allows brushless vibration
  • the size and weight of the dynamic motor 10 can be further reduced.
  • FIG. 7 is a side sectional view showing a configuration of a brushless vibration motor according to the second embodiment.
  • FIGS. 8 and 9 are plan views showing the configuration of this brushless vibration motor.
  • FIG. 8 shows a state in which the cover 38 has been removed for the sake of explanation.
  • the brushless vibration motor (hereinafter, also simply referred to as “motor”) 10 according to the second embodiment has the same basic configuration as the brushless vibration motor according to the first embodiment. In particular, differences between the configurations will be described in detail.
  • the base member 12 has a substantially disk-shaped outer shape.
  • a six-pole flat plate 14 having a different outer shape from the flux plate of the motor according to the first embodiment is provided.
  • a circuit board 16 is provided on the component mounting surface 12 b of the base member 12 and on the flux plate 14.
  • the circuit board 16 has a disk-like outer shape, and has a size similar to that of the base member 12.
  • a bearing device 18 is provided at the center of the component mounting surface 12 b of the base member 12.
  • the shaft 20 is rotatably supported by the bearing device 18.
  • two coils 22 are symmetrically arranged with the shaft 20 interposed therebetween.
  • these coils 22 are formed of flat coils.
  • a Hall element (magnetic-electric conversion element) 24 for detecting magnetism and a motor drive element 26 are provided on the circuit board 16 and in a region between these two coils 22, a Hall element (magnetic-electric conversion element) 24 for detecting magnetism and a motor drive element 26 are provided. Is installed.
  • the shaft 20 is fixed so as to rotate integrally with the rotor 30.
  • a ring-shaped magnet 32 is provided so as to face the coil 22 provided on the circuit board 16.
  • the rotor 30 has a disk shape. This rotor
  • a weight 36 made of a material having a large specific gravity, such as tungsten, is fixed to 30 unbalanced. That is, in a part of the angular range ⁇ of the disk-shaped rotor 30, the weight 36 is imbalanced from the upper surface to the side surface. As described above, since the weight 36 is biased to the rotor 30 and is imbalanced, the vibration is generated with the rotation of the shaft 20.
  • a cover 38 is provided on the base member 12 as shown in FIG.
  • the shaft 20 is rotatably supported only by the bearing device 18.
  • the shaft 20 is rotatable on the cover 38.
  • No bearing device is provided for support.
  • a flux plate 14 In the space formed by the cover 38 and the base member 12, a flux plate 14, a circuit board 16, a coil 22, a motor drive element 26, a hall element 24, a bearing device 18, and a shaft 20, a rotor 30, a magnet 32, a weight 36, etc., are accommodated, and the intrusion of dust and the like from the outside is suppressed. As a result, occurrence of motor failure is suppressed, and stable operation can be performed for a long period of time.
  • a coil / layer 22 As shown in Fig. 8, even with a powerful motor 10, as shown in Fig. 8, a coil / layer 22, a motor driving element 26, a hall element 24, and other electronic elements are provided below a region where the rotor 30 rotates. Are located. Therefore, the space on the circuit board 16 is effectively used, and the size of the motor 10 is reduced.
  • the brushless vibration motor 10 according to the second embodiment has a circular outer shape as shown in FIGS. Since the motor 10 is removed and made compact, the motor 10 can be further reduced in size and weight.
  • the brushless vibration motor according to the third embodiment (hereinafter, also simply referred to as “motor”) 10 has the same basic configuration as the brushless vibration motor according to the first embodiment. In particular, differences in the configuration will be described in detail.
  • the brushless motor 10 forms a small vibration motor to be housed in a device such as a mobile phone.
  • the brushless motor 10 has a base member 12 having a mounting surface 12a to be mounted on a mounting board of a device (not shown) and a component mounting surface 12b opposed thereto.
  • the base member 12 is formed of a material such as plastic or fiber reinforced plastic (FRP: GFRP, CFRP), and has a substantially square outer shape.
  • FRP plastic or fiber reinforced plastic
  • a flux plate 14 is fixed on the component mounting surface 12 b of the base member 12.
  • the flux plate 14 is formed of, for example, a silicon steel plate and has a function of smoothing the start of the motor 10.
  • the circuit board 16 supported on the component mounting surface 12 b of the base member 12 is fixed so as to cover the flux plate 14.
  • the circuit board 16 has a substantially square outer shape, and has a size similar to that of the base member 12.
  • the circuit board 16 is formed from a flexible wiring board or the like, and has printed wiring on the upper surface.
  • a bearing device 18 is provided at the center of the component mounting surface 12 b of the base member 12, and the bearing device 18 rotatably supports the shaft 20.
  • Two coils 22 are fixed on the circuit board 16 so as to sandwich the shaft 20. These coils 22 are constituted by flat coils. Further, as shown in FIG. As described above, on the circuit board 16, the Hall element (magnetoelectric conversion element) 24 for detecting magnetism, the motor driving element 26, and other electronic components 28 are mounted.
  • a rotor 30 that rotates integrally with the shaft 20 is fixed to the shaft 20.
  • a ring-shaped magnet 32 is provided so as to face the coil 22 provided on the circuit board 16.
  • the rotor 30 has a disk shape whose basic shape is defined by a radius R, and about half of its side surface is extended radially outward by AR to form an extended region 30. a is formed.
  • An arc-shaped slit 34 is formed in the extended region 30a.
  • a part of a weight 36 made of a material having a large specific gravity, such as, for example, tungsten, is introduced into the slit 34 from below the rotor 30 and fixed by caulking. Therefore, the weight 36 is biased and fixed to the rotor 30. As described above, since the weight 36 is attached to the rotor 30 in an unbalanced manner, appropriate vibration can be generated with the rotation of the shaft 20.
  • a housing 19 is constituted by the base member 12 and the cover 38, and the housing 19 has, for example, a size of 1 lmm in length, 1 lmm in width, and 3.6 mm in height, Miniaturization is being pursued.
  • a radial bearing 40 that rotatably supports the shaft 20 is fitted into the center of the upper surface of the cover 38.
  • Various components such as the rotor 30, the magnet 32, and the weight 36 are housed, and the adoption of the housing 19 appropriately prevents intrusion of dust and the like from the outside. The occurrence of failure is suppressed, and stable operation is possible over a long period of time.
  • the magnet 32 is a six-pole magnet.
  • the opening angle ⁇ of the coil 22 is 60 degrees as shown in FIG.
  • the drive system of the motor 10 is a single-phase bipolar system or a two-phase bipolar system.
  • the driving method is a single-phase bipolar method or a two-phase unipolar method
  • the driving control of the motor 10 is simplified, and the driving circuit and the circuit board 1 built in the motor driving element 26 are simplified.
  • the wiring on 6 is simplified.
  • the number of necessary Honoré elements 24 is one. As a result, the cost for manufacturing the motor 10 can be further reduced.
  • the number of coils 22 provided on the circuit board 16 is two by adopting a single-phase bipolar system or a two-phase bipolar system as a driving system.
  • cost can be reduced as compared with a motor having three or more coils.
  • the space on the circuit board 16 is effectively used, and the motor drive element 26, the hall element 24, and other electronic components 28 are mounted in the space, thereby reducing the size of the motor 10. Can be achieved.
  • the motor 10 includes terminals 42 and 44 for supplying electric power.
  • the terminals 42 and 44 are arranged on the mounting surface 12 a of the base member 12 and one end is fixed to the circuit board 16. This is a metal plate panel in a cantilever support state.
  • One end of each of the terminals 42 and 44 is bent in an L-shape, and its base end is connected to a predetermined circuit portion of the circuit board 16 via solder 45 and mechanically fixed. I have.
  • the free ends of the terminals 42, 44 extend in a direction perpendicular to the direction in which the shaft 20 extends, and have elasticity in the direction in which the shaft 20 extends.
  • the fixed ends of the terminals 42 and 44 are inserted into the through holes 47 formed in the base member 12 and extend so as to penetrate the circuit board 16.
  • the exposed portions of the terminals 42 and 44 are formed on the base member 12. It is accommodated in the rectangular terminal accommodating portion concave portion 46 to ensure the surface mounting of the motor 10 on the mounting board.
  • the motor 10 by adopting the terminals 42 and 44 having such a configuration, when the motor 10 is mounted on a device such as a mobile phone, soldering is used. In addition, it is possible to perform an assembling operation in which the cover 38 of the motor 10 is pressed from the direction in which the shaft 20 extends. Therefore, the terminal 42 and other components can be electrically easily joined, so that the workability of assembling into a device such as a mobile phone is improved. Moreover, as a result of arranging the terminals 42, 44 on the mounting surface 12a of the base member 12, it is advantageous in promoting miniaturization of the device. Furthermore, as a result of configuring the terminals 42 and 44 with a cantilevered support panel, in a state in which the motor 10 is mounted on the device, the electrical bonding force that effectively utilizes the elastic force is appropriately maintained. It is possible to continue.
  • mounting contact portions 42a, 44a bulging outward are integrally bent and formed. Then, the pair of terminals 42, 44 are arranged on a straight line such that the pair of left and right mounting contact portions 42a, 44a are separated from each other. In this case, the pair of terminals 42, 44 can be aligned in a straight line within the mounting surface 12a by utilizing the spread of the rectangular mounting surface 12a of the base member 12. As a result, the pair of left and right mounting contact portions 42a, 44a can be separated as much as possible. it can. Therefore, short-circuiting between the mounting contacts can be prevented as much as possible.
  • the terminals 42 and 44 are arranged close to one side of the mounting surface 12 a of the base member 12.
  • the mounting contact portions 42a and 44a are arranged in the center of the base portion 12, there is a possibility that the terminals 42 and 44 may be mounted on the device with wrong polarities. Such mounting errors may cause the circuit of the motor 10 to be damaged.
  • the terminals 42 and 44 by arranging the terminals 42 and 44 so as to be close to one side of the mounting surface 12a of the base member 12, such mounting errors can be prevented.
  • the terminal 52 having the mounting contact portion 52a and the terminal 54 having the mounting contact portion 54a may be aligned in parallel with each other on the mounting surface 12a side of the base member 12. . Further, an elastic member such as rubber may be sandwiched between the leaf spring-shaped terminal 42 and the base member 12 so that the elastic member may be housed in the terminal housing recess 46. As a result, more appropriate electrical bonding can be obtained by cooperation between the panel-shaped terminals 42 and an elastic member such as rubber. Note that the same applies to the panel-like terminals 44.
  • FIG. 16 is a side sectional view showing the configuration of the motor according to the fourth embodiment.
  • Figure 1
  • FIG. 7 and 18 are plan views showing the configuration of this motor.
  • FIG. 17 shows a state in which the force par is removed for the sake of explanation
  • FIG. 18 shows a state in which the rotor is further removed.
  • FIG. 19 is a plan view showing a configuration of a base member included in the motor according to the present embodiment.
  • the brushless vibration motor 10 has a mounting surface 12a and a component mounting surface 12b opposed thereto. It has a single member 12.
  • the base member 12 is formed of a material such as elastic plastic or fiber reinforced plastic (FRP: GFRP, CFRP), and has a substantially square outer shape.
  • a flux plate 14 is provided on the component mounting surface 12 b of the base member 12.
  • the flux plate 14 can be formed of, for example, a silicon steel plate, and has a function of smoothly starting the motor 10.
  • a circuit board 16 is provided on the component mounting surface 12 b of the base member 12 and on the flux plate 14.
  • the circuit board 16 has a substantially square outer shape, and has a size similar to that of the base member 12.
  • the circuit board 16 is made of an elastic material such as fiber reinforced plastic (FRP), or a flexible board, and has a printed wiring on its upper surface.
  • a bearing device 18 is provided at the center of the component mounting surface 12 b of the base member 12.
  • the shaft 20 is rotatably supported by the bearing device 18.
  • two coils 22 are symmetrically arranged with the shaft 20 interposed therebetween.
  • these coils 22 are formed of flat coils.
  • a Hall element 24 for detecting magnetism on the circuit board 16 and in a region between these two coils 22, a Hall element 24 for detecting magnetism, a motor driving element (IC) 26, and other electronic elements 28 Is installed.
  • a disk-shaped rotor 30 is fixed to the shaft 20 so as to rotate integrally with the shaft 20.
  • a ring-shaped magnet 32 is provided on the lower surface of the rotor 30 so as to face the coil 22 provided on the circuit board 16.
  • a rotor is constituted by the shaft 20, the rotor 30, and the magnet 32.
  • the rotor 30 has a disk shape whose basic shape is defined by a radius R. None, about half of the side surface extends radially outward by ⁇ ⁇ to form a wide area 30a. An arc-shaped slit 34 is formed in the wide area 30a. Further, a part of a weight 36 made of a material having a large specific gravity, such as tungsten, is introduced into the slit 34 from below the rotor 30 and fixed by caulking. As described above, since the weight 36 is imbalanced to the rotor 30, vibration is generated with the rotation of the shaft 20.
  • a cover 38 is provided on the base member 12 as shown in FIG.
  • a bearing device 40 for rotatably supporting the shaft 20 is provided on the upper surface of the cover 38.
  • a circuit board 16, a coil 22, a motor drive element 26, a hall element 24, a bearing device 18, a shaft 20, a rotor 3 are provided in a space formed by the cover 38 and the base member 12. 0, accommodates members such as the magnet 32, and suppresses intrusion of dust and the like from the outside. As a result, occurrence of motor failure is suppressed, and stable operation can be performed for a long period of time.
  • the coil 22, the motor driving element (I C) 26, the Hall element 24, and the other electronic elements 28 are arranged below the region where the rotor 30 rotates. Therefore, the space on the circuit board 16 is effectively used, and the size of the motor 10 is reduced.
  • the magnet 32 is preferably a six-pole magnet.
  • the motor 10 has a terminal structure 4 for supplying power.
  • Each of the terminal structures 42 and 44 includes a spring leaf piece 43 and a metal terminal 49 attached to the spring leaf piece 43.
  • the spring leaf piece portion 43 extends along a reference plane including the mounting surface 12a of the base portion -12. More specifically, the lower surface of the spring plate piece 43 and the mounting surface 12a of the base member 12 are on the same plane.
  • the longitudinal direction is along one side of the base member 12.
  • this spring leaf piece 43 is made of a tree using a mold. It is integrally formed with the base member 12 by resin molding or the like, and is cantilevered by the base member 12.
  • the base member 12 is formed of an elastic material such as FRP, a desired spring force is applied to the spring plate piece 43.
  • the circuit board 16 has an arm portion 17 extending along a reference surface including the mounting surface 12 a of the base member 12 and a longitudinal direction extending along one side of the circuit board 16. Are provided.
  • the arm portion 17 is formed integrally with the circuit board 16 by punching a single board or the like, and is cantilevered by the circuit board 16.
  • the arm portion 17 is formed so as to be located on the spring plate portion 43 with the circuit board 16 mounted on the base member 12.
  • a metal terminal 49 is attached to the tip of the spring plate piece 43.
  • the tapered tail of the metal terminal 49 passes through the hole provided at the tip of the spring plate piece 43 from the lower surface and reaches the upper surface. Further, the tail portion of the metal terminal 49 is passed through a hole provided in the arm portion 17 of the circuit board 16 from the lower surface, and is fixed by soldering or the like on the upper surface. Wiring (not shown) is provided on the upper surface of the arm 17 and is connected to the wiring on the circuit board 16.
  • the tip portion 49 a of the metal terminal 49 is spherically processed. As described above, since the distal end portion 49a is spherically processed, the contact with the mounting substrate is stabilized as compared with the case where the distal end portion 49a is formed on a flat surface.
  • the motor 10 includes the pair of terminal structures 42 and 44 having the above-described configuration.
  • the root portions of the spring plate pieces 43 provided in the terminal structures 42 and 44 are cantilevered by protrusions 12 c protruding from the base member 12.
  • the operation and effect of the motor 10 including the terminal structures 42 and 44 having the above-described configuration will be described.
  • the tip portion 49 a of the metal terminal 49 attached to the tip of the spring plate piece 43 attaches the base member 12 It protrudes downward from the reference plane including plane 12a.
  • This amount of protrusion affects the pressing force when mounted on a mounting board, and is required to be stable.
  • the amount of protrusion depends on the parallelism of the spring plate piece 43 to the reference plane and the dimensional accuracy of the metal terminal 49.
  • the spring plate piece 43 is formed integrally with the base member 12 and the parallelism is maintained high. Also, it is easy to maintain high dimensional accuracy of the metal terminals 49. Therefore, the amount of protrusion is stabilized.
  • the spring plate piece 43 is subjected to the spring force via the metal terminal 49.
  • the pile is pushed up, whereby the tip 49 a of the metal terminal 49 is displaced toward the reference plane.
  • the metal terminal 49 is pressed against the mounting board 50 with a desired pressing force by the spring force of the spring plate piece 43.
  • the tip portion 49a of the metal terminal 49 and the power supply portion (not shown) of the mounting board 50 are brought into contact with a desired contact pressure, and conduction is ensured.
  • the posture of the motor 10 in the mounted state is stabilized, and the pressing force is stabilized by the spring force of the spring plate piece 43.
  • the tip portion 49 a of the metal terminal 49 is brought into contact with the power supply portion of the mounting board 50 by force.
  • the terminal structure 42, 44 can be configured by the spring plate piece 43 integrally formed with the base member 12 and the metal terminal 49, thereby sufficiently suppressing the motor 10 from being enlarged. It becomes possible. Further, since no special parts are required to construct the terminal structures 42 and 44, it is possible to suppress an increase in cost.
  • the spring plate piece 43 may be supported at both ends.
  • the base member 1 2 By punching the three elongated slits 52 in parallel to each other, two two-sided supporting spring plate pieces 43 can be formed. Then, by attaching a metal terminal 49 near the center of each spring plate piece 43, terminal structures 42 and 44 are formed. In the motor having the terminal structures 42 and 44, as shown in FIG. 22, in the non-mounted state, the distal end portion 49a of the metal terminal 49 attached to the spring plate piece 43 is It protrudes below the reference surface including the mounting surface 12 a of the base member 12.
  • the spring plate piece 43 is piled up by the spring force via the metal terminal 49 and pushed up.
  • the tip 49 a of the metal terminal 49 is displaced toward the reference plane.
  • the metal terminal 49 is pressed against the mounting board with a desired pressing force by the spring force of the spring plate piece 43.
  • the tip part 49a of the metal terminal 49 and the power supply part of the mounting board come into contact with a desired contact pressure, and conduction is ensured.
  • the posture of the motor 10 in the mounted state is stabilized, and the pressing force is stabilized by the spring force of the spring plate piece 43.
  • the tip portion 49 a of the metal terminal 49 and the power supply portion of the mounting board 50 are in contact with each other.
  • the terminal structure 42, 44 can be configured by the spring plate piece 43 integrally formed with the base member 12 and the metal terminal 49, so that the motor 10 can be sufficiently suppressed from being enlarged. It becomes possible. Further, since no special parts are required to construct the terminal structures 42 and 44, it is possible to suppress an increase in cost.
  • brushless vibration motor according to the present invention is not limited to the above-described embodiment, but can be variously modified.
  • the two coils 22 are arranged symmetrically with the shaft 20 interposed therebetween.
  • the present invention is not limited to this.
  • a mobile phone having a vibration notification function can be formed by mounting a brushless vibration motor 10 on an internal substrate 72 of a mobile phone 70.
  • a brushless vibration motor 10 is mounted on an internal substrate 82 of a portable information terminal device 80 such as a pager or a PDA to provide a portable information terminal device having a vibration notification function.
  • a brushless vibration motor 10 is mounted on an internal substrate 92 of a game machine 90 such as a game machine controller or a pachinko handle to form a game machine having a vibration alerting function. can do.
  • a brushless vibration motor that can be reduced in size and cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Brushless Motors (AREA)

Abstract

L'invention concerne un moteur vibrant sans balais qui comprend un élément de base pourvu d'une surface de placement et d'une surface de montage de pièces, une carte de circuits imprimés disposée sur la face de montage des pièces de l'élément de base, une plaque de flux, deux bobines, un élément de Hall, un arbre disposé entre les deux bobines, un rotor fixé à l'arbre avec lequel il tourne solidairement, un aimant disposé dans le rotor face aux deux bobines, et enfin, un contrepoids monté décalé par rapport au rotor.
PCT/JP2002/009643 2001-09-19 2002-09-19 Moteur vibrant sans balais WO2003028191A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20037006070A KR100909716B1 (ko) 2001-09-19 2002-09-19 브러시리스 진동모터 및 진동 모터 단자

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2001285629A JP2003092854A (ja) 2001-09-19 2001-09-19 モータの端子構造、及びこの端子構造を備えるモータ
JP2001-285590 2001-09-19
JP2001285590A JP2003088805A (ja) 2001-09-19 2001-09-19 ブラシレス振動モータ
JP2001-285629 2001-09-19
JP2001301262A JP2003111374A (ja) 2001-09-28 2001-09-28 ブラシレスモータ
JP2001-301262 2001-09-28

Publications (1)

Publication Number Publication Date
WO2003028191A1 true WO2003028191A1 (fr) 2003-04-03

Family

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Application Number Title Priority Date Filing Date
PCT/JP2002/009643 WO2003028191A1 (fr) 2001-09-19 2002-09-19 Moteur vibrant sans balais

Country Status (3)

Country Link
KR (1) KR100909716B1 (fr)
CN (1) CN1276570C (fr)
WO (1) WO2003028191A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100828649B1 (ko) * 2006-04-06 2008-05-09 엘지이노텍 주식회사 브러쉬리스 직류 진동모터
CN111247725B (zh) * 2017-10-27 2022-06-14 日本电产株式会社 马达

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164368U (fr) * 1987-04-16 1988-10-26
JPH0311356U (fr) * 1989-06-16 1991-02-04
JPH03107347A (ja) * 1989-09-19 1991-05-07 Takara Seisakusho:Kk 振動型偏平ブラシレスモータ
JPH0380650U (fr) * 1989-11-30 1991-08-19
JPH07213041A (ja) * 1994-01-18 1995-08-11 Shicoh Eng Co Ltd 単相ブラシレスモ−タ
JPH08251896A (ja) * 1995-03-03 1996-09-27 Nippon Densan Corp スピンドルモータ
JPH1198761A (ja) * 1997-09-18 1999-04-09 Matsushita Electric Ind Co Ltd ブラシレス振動モータ
JP2000245103A (ja) * 1999-02-24 2000-09-08 Matsushita Electric Ind Co Ltd ブラシレス振動モータ
JP2000287403A (ja) * 1999-03-29 2000-10-13 Nippon Densan Corp ブラシレスモータ
JP2001218435A (ja) * 2000-01-28 2001-08-10 Matsushita Electric Ind Co Ltd 小型偏平モータ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1316815A (zh) * 2000-01-27 2001-10-10 东京零件工业股份有限公司 非圆形扁平电机及其制造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164368U (fr) * 1987-04-16 1988-10-26
JPH0311356U (fr) * 1989-06-16 1991-02-04
JPH03107347A (ja) * 1989-09-19 1991-05-07 Takara Seisakusho:Kk 振動型偏平ブラシレスモータ
JPH0380650U (fr) * 1989-11-30 1991-08-19
JPH07213041A (ja) * 1994-01-18 1995-08-11 Shicoh Eng Co Ltd 単相ブラシレスモ−タ
JPH08251896A (ja) * 1995-03-03 1996-09-27 Nippon Densan Corp スピンドルモータ
JPH1198761A (ja) * 1997-09-18 1999-04-09 Matsushita Electric Ind Co Ltd ブラシレス振動モータ
JP2000245103A (ja) * 1999-02-24 2000-09-08 Matsushita Electric Ind Co Ltd ブラシレス振動モータ
JP2000287403A (ja) * 1999-03-29 2000-10-13 Nippon Densan Corp ブラシレスモータ
JP2001218435A (ja) * 2000-01-28 2001-08-10 Matsushita Electric Ind Co Ltd 小型偏平モータ

Also Published As

Publication number Publication date
CN1276570C (zh) 2006-09-20
KR100909716B1 (ko) 2009-07-29
KR20040029954A (ko) 2004-04-08
CN1473385A (zh) 2004-02-04

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