WO2010029837A1 - 振動モータ - Google Patents

振動モータ Download PDF

Info

Publication number
WO2010029837A1
WO2010029837A1 PCT/JP2009/064563 JP2009064563W WO2010029837A1 WO 2010029837 A1 WO2010029837 A1 WO 2010029837A1 JP 2009064563 W JP2009064563 W JP 2009064563W WO 2010029837 A1 WO2010029837 A1 WO 2010029837A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
poles
vibration motor
salient
field magnet
Prior art date
Application number
PCT/JP2009/064563
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
稔 田中
政英 大島
寛之 藤崎
Original Assignee
Tanaka Minoru
Ooshima Masahide
Fujisaki Hiroyuki
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 Tanaka Minoru, Ooshima Masahide, Fujisaki Hiroyuki filed Critical Tanaka Minoru
Priority to KR1020117005802A priority Critical patent/KR101056265B1/ko
Priority to CN2009801360196A priority patent/CN102149482B/zh
Priority to JP2010510605A priority patent/JP4722225B2/ja
Publication of WO2010029837A1 publication Critical patent/WO2010029837A1/ja

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • 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
    • H02K21/26—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets
    • H02K21/28—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets with armatures rotating within the magnets
    • H02K21/30—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets with armatures rotating within the magnets having annular armature cores with salient poles
    • 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

Definitions

  • the present invention relates to a vibration motor, and more particularly to a vibration motor composed of a flat type iron core motor having three salient pole distributed armatures.
  • a vibration motor driven by a direct current power source such as a rechargeable battery is used for a cellular phone, a pager, and the like.
  • the vibration motor is roughly divided into a so-called flat type and a cylindrical type.
  • a flat type vibration motor as shown in JP-A-2006-325384 (Patent Document 1), an eccentric type rotor is used.
  • the structure by the iron-free core motor which it has is proposed.
  • the vibration motor 100 described in Patent Document 1 has a board 131 having an insertion hole 131a and a plurality of pattern coils above the board 131, as shown in FIG.
  • a field magnet 202 in which six magnetic poles are magnetized in the circumferential direction, and a center that is distributed asymmetrically about the rotational shaft 207.
  • An armature core 203 is formed by winding a coil on three salient poles consisting of the salient pole 204 and a pair of left and right salient poles 205 and 206, and the excitation force by the central salient pole 204 is obtained by a pair of left and right salient poles 205 , 206, and at start-up, the central salient pole 204 generates a magnetic pole having the same polarity as the opposing magnetic pole to the field magnet 202, and the armature core 203 is rotationally urged by the repulsive force. With this configuration, the mass of the armature core 203 and its imbalance generate vibrations.
  • the present invention has been made in view of the above-mentioned circumstances, and is a flat having three salient unevenly distributed armatures, which can make thin and miniaturize outer dimensions while improving the amount of vibration and rotational torque while keeping the manufacturing cost low. It is an object of the present invention to provide a vibration motor composed of a cored iron core motor.
  • This vibration motor has a field magnet consisting of an even number of magnetic poles in which N and S poles are alternately arranged in the circumferential direction, and a center having a rotation axis and being distributed eccentrically about the rotation axis.
  • An oscillating motor comprising: an armature core in which a coil is wound around three salient poles consisting of a salient pole and a pair of both salient poles arranged at predetermined angles on both sides of the central salient pole.
  • the field magnet is provided in the rotational surface of the armature core and at a position radially outward of the tip of the armature core, and the three salient poles are the field salient pole of the field salient pole.
  • the two salient poles are disposed so that the magnetic pole centers are offset with respect to the other magnetic poles of the field magnet when the magnetic pole centers coincide with one magnetic pole of the magnet, and the central salient pole and the rotation axis are It is required that a weight be provided at a position on the opposite side in the radial direction.
  • the vibration motor configured by the flat type iron core motor having the three salient pole distributed armature, it is possible to reduce the thickness and to improve the amount of vibration.
  • FIGS. 1A and 1B are schematic views showing an example of a vibration motor according to a first embodiment of the present invention.
  • FIGS. 2A and 2B are schematic views showing the configuration of an armature core and a weight of the vibration motor shown in FIGS. 1A and 1B.
  • 3A to 3F are explanatory views showing the rotation operation of the vibration motor shown in FIGS. 1A and 1B.
  • FIGS. 4A and 4B are schematic views showing an example of a core top of a vibration motor according to a second embodiment of the present invention.
  • 5A and 5B are schematic views showing a modification of the core top of the vibration motor according to the second embodiment of the present invention.
  • 6A and 6B are schematic views showing a modification of the core top of the vibration motor according to the second embodiment of the present invention.
  • FIGS. 7A and 7B are schematic views showing an example of a vibration motor according to a third embodiment of the present invention.
  • 8A to 8F are explanatory views showing the rotational operation of the vibration motor shown in FIGS. 7A and 7B.
  • 9A and 9B are schematic views showing an example of a vibration motor according to a fourth embodiment of the present invention.
  • FIGS. 10A and 10B are schematic views showing an example of a vibration motor according to a fifth embodiment of the present invention.
  • 11A and 11B are schematic views showing an example of a vibration motor according to a sixth embodiment of the present invention. It is the schematic which shows an example of the vibration motor comprised with the iron-free-core motor which has the eccentric-type rotor which concerns on conventional embodiment. It is the schematic which shows an example of the vibration motor comprised with the flat type
  • the iron-free core motor having an eccentric type rotor represented by the vibration motor 100 described in Patent Document 1 is compared with the flat type iron core motor having a three salient pole biased armature represented by the vibration motor 200 described in Patent Document 2.
  • thinning is difficult due to the difference in the basic structure of the motor.
  • the field magnet, the substrate (commutator), the coil, and the weight are arranged in the axial direction of the rotation shaft, in the example of the outer shape 10 [mm], the axial thickness is 2. The limit is about 7 mm.
  • ironless core motors with eccentric rotors have a high adoption rate, in particular as vibration motors for mobile phones.
  • the vibration motor according to the present embodiment is a flat type iron core motor having a three salient pole distributed armature having the configuration described below, and an outer diameter 10 [10] by a conventional ironless core motor having an eccentric type rotor. mm], while maintaining the performance and cost equivalent to a vibrating motor with a thickness of 2.7 mm, while realizing outer dimensions of 10 mm in outer diameter and 2.0 mm in thickness, which are thinner. To be possible.
  • FIG. 1 is a schematic view of a vibration motor 1 according to the present embodiment
  • FIG. 1A is a cross-sectional view
  • FIG. 1B is a plan view.
  • a flat ring-like (substantially cylindrical) field magnet having a total of six magnetic poles formed by alternately magnetizing N and S poles in the circumferential direction on the inner peripheral surface of the substantially dish-shaped case 20 2 is provided.
  • the magnetization of the field magnet 2 is either sinusoidal or trapezoidal.
  • the field magnet 2 a sintered magnet, a bonded magnet, a plastic magnet or the like mainly containing ferrite, neodymium, iron, boron or the like is used.
  • a sintered magnet containing a rare earth element As described above, the field magnet 2 of the present embodiment has a ring shape consisting of a total of six magnetic poles in which N and S poles are alternately arranged in the circumferential direction.
  • the field magnets 2 are formed by bonding sintered magnets obtained by magnetizing one, two or three magnetic poles, respectively, or by bonding them to the case 20. This makes it possible to realize a ring-shaped field magnet 2 of six poles. Further, as another example in the present embodiment, it is also possible to form the field magnet 2 by a bonded magnet using neodymium.
  • the bond magnet has a problem in that the magnet strength (energy product) is smaller than that of a sintered magnet.
  • the ring motor in a conventional vibration motor by a coreless motor having an eccentric rotor, the ring motor has a size corresponding to a vibration motor having an outer diameter of 10 mm and a thickness of 2.7 mm. Can be used as a field magnet. This is because the magnetization direction of the field magnet is the axial direction.
  • Table 1 the comparison of the factor which determines the rotational torque in the conventional vibration motor using a sintered magnet and the vibration motor 1 of this embodiment using a bond magnet is shown in Table 1. By the way, the price of both magnets is equal.
  • Vibration motor of the present embodiment 1: 0.936 It becomes.
  • the vibration motor 1 of the present embodiment exemplified in Table 1 has the same rotational torque as the conventional vibration motor exemplified in Table 1. It can be seen that the occurrence of That is, if the vibration motor 1 of the present embodiment is configured using a sintered magnet, it is possible to achieve further improvement of the rotational torque or reduction in size and thickness.
  • the armature core 3 will be described.
  • An armature core 3 rotating about a rotation shaft 7 supported by the case 20 and the lid 17 is disposed radially inward of the field magnet 2.
  • the vibration described in Patent Document 1 As described above, according to the configuration in which the field magnet 2 is provided in the rotation surface of the armature core 3 and at the radially outer position than the tip of the armature core 3, for example, the vibration described in Patent Document 1 As compared with a structure in which the coil and the field magnet overlap in the axial direction of the rotation shaft as in the motor 100, it is possible to reduce the dimension in the axial direction, that is, the thickness. In the present embodiment, the amount of vibration and rotational torque can be improved by the configuration described later, so the thickness can be reduced to about 2.0 mm while maintaining the same performance as a conventional vibration motor. It is possible.
  • armature core 3 is provided with central salient pole 4 and a pair of both sides disposed on the left and right of central salient pole 4. It has three salient poles consisting of salient poles 5 and 6, and is distributed in an astigmatically symmetrical manner around the rotation axis 7. Incidentally, the distance (opposing gap) between the field magnet 2 and each salient pole tip is the same size.
  • the central salient pole 4 has a magnetic pole center with respect to one magnetic pole of the field magnet 2 with respect to the three salient poles
  • the two angles salient poles 5 and 6 are other magnetic poles of the field magnet 2.
  • the magnetic pole centers are arranged so as to be offset with respect to each magnetic pole (here, the magnetic poles are adjacent to the one magnetic pole on both sides). This angle is suitable for rotationally biasing. More specifically, since the magnetic poles of the field magnet 2 are six poles, one cycle of the current is 120 °. Further, since the current has three phases of U, V, and W, there are three kinds of timings, and the phases need to be shifted by 40 [°].
  • the both side salient poles 5 and 6 are shifted by 40 [.degree. It is necessary to arrange both side salient poles 5 and 6 by shifting 10 [°] from the position of the pole and the south pole).
  • ⁇ 80 ° or 100 °.
  • the respective salient poles of the central salient pole 4 and the both-side salient poles 5 and 6 are formed by connecting and fixing the core tops 4b, 5b and 6b to the radial direction end portions of the core bodies 4a, 5a and 6a, respectively.
  • the method to connect and fix is not specifically limited, As an example, it fixes by laser welding etc.
  • Coils 8, 9, 10 are wound around the core body 4a of the central salient pole 4 and the core bodies 5a, 6a of the both side salient poles 5, 6, respectively.
  • the coil diameters and the number of turns of the coils 8, 9 and 10 are the same.
  • the core tops 4b, 5b, 6b are formed so that the dimension in the circumferential direction and the dimension in the axial direction are larger than those of the core bodies 4a, 5a, 6a.
  • it is formed in the curved plate shape which describes the circular arc centering on the rotating shaft 7.
  • FIG. It becomes possible to enlarge the opposing surface with the field magnet 2 by this. As a result, the effective magnetic flux can be increased, and the motor efficiency can be improved.
  • the vibration motor 1 having an outer diameter of about 10 [mm] and a thickness of about 2.0 [mm], a gap (slot) between the core main bodies 4a, 5a, 6a, and a core serving as an inlet thereof.
  • the coils 8, 9 and 10 are There is a problem that it is impossible or extremely difficult to wind (machine winding) by the close-contact winding method.
  • the core tops 4b, 5b, 6b are connected to the integrally formed core bodies 4a, 5a, 6a by configuring the core tops 4b, 5b, 6b as separate members. It is possible to wind the coils 8, 9 and 10 around the core bodies 4a, 5a and 6a, respectively.
  • the coils 8, 9, 10 can be wound around the core tops 4b, 5b, 6b by the "aligned tight winding” method, the rotational torque of the vibration motor 1 can be improved.
  • the coils 8, 9, 10 can be wound not by "hand-winding” by hand but by "machine-winding” by a mechanical device, an increase in manufacturing cost is also suppressed.
  • the integral formation of the core bodies 4a, 5a, 6a is also effective for suppressing the increase in cost.
  • a weight 21 is provided at a position opposite to the radial direction across the central salient pole 4 and the rotary shaft 7 (see FIGS. 1 and 2).
  • the weight 21 produces an action of generating vibration of the vibration motor 1 by rotating integrally with the armature core 3. That is, the mass gravity center of the rotating armature core 3 is made to be decentered in the radial direction with respect to the rotation axis 7 to obtain the vibration action.
  • the center of gravity of the armature core 3 is eccentric, vibration occurs when it rotates as it is, but temporarily, a weight 21 is provided at the radial tip of the central salient pole 4
  • the mass center of gravity can be further decentered from the center of the rotary shaft 7 toward the tip of the central salient pole 4 in the radial direction, so that an effect of increasing the amount of vibration can be obtained.
  • a weight 21 is provided at a position opposite to the radial direction with respect to the central salient pole 4 and the rotary shaft 7 (see FIG. 1 and the like).
  • the weight 21 is opposite to the radial direction across the central salient pole 4 and the rotational axis 7 Providing at the position usually cancels the eccentricity and makes the mass gravity center coincide with the rotation center, that is, reduce the amount of vibration.
  • the weight is achieved by providing the weight 21 by fully utilizing the space formed at the position on the opposite side in the radial direction across the central salient pole 4 and the rotary shaft 7.
  • the weight 21 in the space and to form it with an alloy having a larger specific gravity.
  • the weight 21 is configured using a metal material or metal alloy material having a specific gravity larger than that of the magnetic material constituting the armature core 3. According to this configuration, the mass imbalance of armature core 3, that is, the distance between the mass center of gravity of armature core 3 and rotation axis 7 can be further increased. It is possible to make the amount of vibration generated stronger.
  • the metal material or metal alloy material it is conceivable to use, for example, tungsten, bronze, brass, molybdenum, or an alloy thereof, but in particular, it is possible to use an electrical machine that is made of tungsten or a tungsten alloy having a large specific gravity. It is suitable in view of increasing the mass imbalance of the iron core 3.
  • the present embodiment is realized without increasing the axial thickness of the armature core 3, that is, without increasing the thickness of the vibration motor 1, to produce the effect of improving the amount of vibration, and further, the armature This is realized without expanding the diameter of the iron core 3 in the radial direction, that is, without increasing the outer diameter of the vibration motor 1, and additionally without reducing the coil winding space, that is, without reducing the coil excitation force.
  • the vibration motor 1 In order to realize a vibration motor having a thickness of 2.0 mm, the vibration motor 1 according to the present embodiment has a thickness of 2.0 mm by making the conventional eccentric rotor ironless core motor brushless. This is advantageous in that it is possible to generate a larger amount of vibration than to achieve the vibration motor of. As described above, it is also advantageous in terms of cost. Next, the electrical connection structure will be described.
  • a flat commutator 11 is connected to the armature core 3 around the rotation axis 7.
  • nine substantially trapezoidal segments (three each of three phases of U, V, and W) formed by printed wiring on one surface of the insulating plate 12 are circumferentially arranged.
  • Aligned with A terminal portion 14 is formed in the segment 13, and the starting ends and the ends of the three coils 8, 9, 10 described above are electrically connected to the predetermined terminal portion 14.
  • the segments 13 in phase with each other are electrically connected by a wire not shown.
  • the commutator 11 is not limited to the flat type, but may be cylindrical.
  • the segment 13 of the commutator 11 is in sliding contact with a pair of brushes 18 disposed at an open angle of 180 °.
  • the brush 18 is formed of an elastic conductive metal plate or the like.
  • the proximal end of the brush 18 is fixed to the lid 17.
  • the lid 17 is covered by the case 20 described above. Further, the base end of the brush 18 is connected to a DC power supply via a wire (not shown).
  • the fixing structure of the component members will be described.
  • the holder 19 is provided, and in the holder 19, the armature core 3, the weight 21 and the commutator-equipped substrate 16 (the commutator 11 is provided on the surface)
  • the substrate is a structure to be fixed respectively.
  • the electric iron core 3 (here, the integrally formed core bodies 4a, 5a, 6a) is placed in a holder 19 manufactured as a single component using a synthetic resin, and a substrate with a commutator By sandwiching at 16 and thermally deforming and caulking the pin-shaped portions 19a of the holder 19, they are integrally fixed.
  • the core tops 4b, 5b, 6b are laser welded to the core bodies 4a, 5a, 6a, etc.
  • the weight 21 is crimped and fixed to the pin-like portion 19 a of the holder 19.
  • the circumferential width of the core top of each salient pole is usually formed to be equal to or smaller than the circumferential width of the magnetic pole of the field magnet.
  • the circumferential width of the core tops 4b, 5b, 6b may be formed larger than the circumferential width of the magnetic poles of the field magnet 2 by 5 to 15 [°] (not shown) . Since this makes it possible to reduce the torque ripple, the average startup torque is slightly reduced, but it is possible to increase the minimum startup torque. Furthermore, in order to improve the starting torque, a difference may be provided between the center of the magnetic poles of the field magnet 2 and the magnetic center of the central salient pole 4.
  • both salient poles it is also conceivable to provide a difference between the centers of both salient poles by making the magnetic centers of the pair of salient poles different from each other. More specifically, the magnetic centers of both side salient poles 5 and 6 can be displaced by forming the opening angles of the pair of both side salient poles 5 and 6 asymmetrically on the left and right. As described above, by making the magnetic centers of the both salient poles different from each other, the magnetic center of the central salient pole 4 with respect to the center of the magnetic pole of the field magnet 2 is displaced, so that a large repulsive force is obtained. The start current can be reduced.
  • the angle ⁇ between the center of the central salient pole 4 and the centers of the pair of left and right salient poles 5 and 6 is set to 80 [°] ⁇ ⁇ 90 [°].
  • FIG. 4A is a plan view
  • FIG. 4B is a front view
  • the core tops 5b and 6b of both side salient poles 5 and 6 have their ends near the central salient pole It is formed in a thick shape in the radial or axial direction. Note that FIG.
  • FIG. 5A is a plan view
  • FIG. 5B is a front view
  • FIG. 6A is a plan view
  • FIG. 6B is a front view
  • the same effect can be obtained even if the end near the central salient pole 4 is relatively long in the circumferential direction and the end far from the central salient pole 4 is relatively short in the circumferential direction. can get. Of course, they may be implemented simultaneously.
  • FIGS. 5 and 6 illustrate the both side salient poles 5 as an example, and the both side salient poles 6 may be considered symmetrically with this (not shown).
  • a vibration motor 1 according to a third embodiment of the present invention will be described. This is an embodiment in the case of a direct current motor in which the field magnet 2 has eight magnetic poles and the commutator 11 is formed in four places of three phases.
  • FIG. 6A is a plan view
  • FIG. 6B is a front view
  • FIG. 7 is a schematic view of the vibration motor 1 according to the present embodiment, wherein FIG. 7A is a cross-sectional view and FIG. 7B is a plan view. Also in this embodiment, by providing the configuration described below, it is thinner than the vibration motor which has conventionally been realized and whose outer diameter is 10 mm and thickness is 2.7 mm. It is possible to realize external dimensions with a certain outer diameter of 10 [mm] and a thickness of 2.0 [mm].
  • the present embodiment will be described focusing on differences from the first embodiment.
  • a flat ring shape (substantially cylindrical shape) having a total of eight magnetic poles in which N and S poles are alternately magnetized in the circumferential direction on the inner peripheral surface of the substantially dish-shaped case 20 ) Is disposed.
  • a ring-shaped sintered magnet corresponding to the vibration motor 1 having an outer diameter of 10 mm and a thickness of 2.0 mm is integrally formed. It is impossible or extremely difficult to do. Therefore, in the present embodiment, the field magnets 2 are formed by bonding sintered magnets obtained by magnetizing one, two or four magnetic poles, respectively, or by bonding them to the case 20. This makes it possible to realize an 8-pole ring-shaped field magnet 2.
  • the field magnet 2 by a bonded magnet using neodymium.
  • the central salient pole 4 has a magnetic pole center with respect to one magnetic pole of the field magnet 2 with respect to the three salient poles, the two angles salient poles 5 and 6 are other magnetic poles of the field magnet 2.
  • the magnetic pole centers are arranged so as to be displaced with respect to the first magnetic pole and the second magnetic poles in this case, and it is possible to prevent the motor core 3 from becoming unstartable by the stop position. This angle is suitable for rotationally biasing.
  • the gaps (slots) between the core main bodies 4a, 5a, 6a, and the gaps between the core tops 4b, 5b, 6b serving as the inlets thereof are compared with the first embodiment. Can be formed large. That is, even if the core bodies 4a, 5a, 6a and the core tops 4b, 5b, 6b are integrally formed, the coils 8, 9, 10 can be wound (machinely wound) by a so-called "aligned close winding" method It becomes.
  • armature core 3 (prior to winding of the coils 8, 9, 10) can be integrally formed by pressing or the like, and productivity can be improved and cost can be reduced.
  • a weight 21 is provided at a position opposite to the radial direction with respect to the central salient pole 4 and the rotary shaft 7 (see FIG. 7B). The action of the weight 21 is the same as that of the first embodiment. However, since the size of the space formed at the position on the opposite side in the radial direction with respect to the central salient pole 4 and the rotary shaft 7 is relatively smaller than that of the first embodiment, The size is also relatively small.
  • a planar commutator 11 is connected to the armature core 3 around the rotation axis 7.
  • the commutator 11 twelve segments (four each of three phases of U, V, and W) formed in a substantially trapezoidal shape formed by printed wiring on one surface of the insulating plate 12 are circumferentially arranged. Aligned with A terminal portion 14 is formed in the segment 13, and the starting ends and the ends of the three coils 8, 9, 10 described above are electrically connected to the predetermined terminal portion 14.
  • the in-phase segments 13 are electrically connected by wiring (not shown).
  • the open angle of the pair of brushes 18 in sliding contact with the segment 13 of the commutator 11 is 135 [deg.] (Narrow angle side). Subsequently, a vibration motor 1 according to a fourth embodiment of the present invention will be described.
  • FIG. 9 is a schematic view of the vibration motor 1 according to the present embodiment
  • FIG. 9A is a cross-sectional view
  • FIG. 9B is a plan view.
  • it is thinner than the vibration motor which has conventionally been realized and whose outer diameter is 10 mm and thickness is 2.7 mm. It is possible to realize external dimensions with a certain outer diameter of 10 [mm] and a thickness of 2.0 [mm].
  • the present embodiment will be described focusing on differences from the first embodiment.
  • a flat ring shape (generally cylindrical shape) having a total of four magnetic poles in which N and S poles are alternately magnetized in the circumferential direction on the inner peripheral surface of the substantially dish-shaped case 20 ) Is disposed.
  • a ring-shaped sintered magnet corresponding to the vibration motor 1 having an outer diameter of 10 mm and a thickness of 2.0 mm is integrally formed. It is impossible or extremely difficult to do. Therefore, in the present embodiment, sintered magnets in which magnetic poles of one or two poles are magnetized are respectively bonded or bonded to the case 20 to form the field magnet 2. This makes it possible to realize a ring-shaped field magnet 2 of four poles.
  • the field magnet 2 by a bonded magnet using neodymium.
  • the central salient pole 4 has a magnetic pole center with respect to one magnetic pole of the field magnet 2 with respect to the three salient poles, the two angles salient poles 5 and 6 are other magnetic poles of the field magnet 2.
  • the magnetic pole centers are arranged so as to be offset with respect to each magnetic pole (here, the magnetic poles are adjacent to the one magnetic pole on both sides).
  • the gaps (slots) between the core main bodies 4a, 5a, 6a, and the gaps between the core tops 4b, 5b, 6b serving as the inlets thereof are compared with the first embodiment.
  • the armature core 3 (prior to winding of the coils 8, 9, 10) can be integrally formed by pressing or the like, and productivity can be improved and cost can be reduced.
  • a weight 21 is provided at a position opposite to the radial direction with respect to the central salient pole 4 and the rotary shaft 7 (see FIG. 9B).
  • the action of the weight 21 is the same as that of the first embodiment.
  • a planar commutator 11 is connected to the armature core 3 around the rotation axis 7.
  • six substantially trapezoidal segments (two each of three phases of U, V, and W) formed by printed wiring on one surface of the insulating plate 12 are circumferentially arranged.
  • FIGS. 10A and 10B a vibration motor 1 according to a fifth embodiment of the present invention is shown in FIGS. 10A and 10B (FIG. 10A is a sectional view, and FIG. 10B is a plan view).
  • the vibration motor 1 according to the present embodiment is a modification of the vibration motor 1 according to the fourth embodiment described above. As a characteristic configuration, as shown in FIG.
  • FIG. 11 is a schematic view of the vibration motor 1 according to the present embodiment
  • FIG. 11A is a cross-sectional view
  • FIG. 11A is a schematic view of the vibration motor 1 according to the present embodiment
  • 11B is a plan view. Also in this embodiment, by providing the configuration described below, it is thinner than the vibration motor which has conventionally been realized and whose outer diameter is 10 mm and thickness is 2.7 mm. It is possible to realize external dimensions with a certain outer diameter of 10 [mm] and a thickness of 2.0 [mm].
  • a flat ring shape substantially cylindrical shape having a total of two magnetic poles in which N and S poles are alternately magnetized in the circumferential direction on the inner peripheral surface of the substantially dish-shaped case 20 ) Is disposed.
  • the arrangement is such that when the central salient pole 4 is aligned with the magnetic pole of one of the field magnets 2 with respect to the three salient poles, both salient poles 5 and 6 are other magnetic poles of the field magnet 2.
  • the magnetic pole center is disposed so as to be offset with respect to the angle of rotation of the armature core 3. This angle is suitable for preventing the motor from becoming unstartable due to the stop position and for urging the armature core 3 to rotate.
  • the gaps (slots) between the core main bodies 4a, 5a, 6a, and the gaps between the core tops 4b, 5b, 6b serving as the inlets thereof are compared with the first embodiment. Can be formed large.
  • the coils 8, 9, 10 can be wound (machinely wound) by a so-called “aligned close winding” method It becomes.
  • the armature core 3 (prior to winding of the coils 8, 9, 10) can be integrally formed by pressing or the like, and productivity can be improved and cost can be reduced.
  • a weight 21 is provided at a position opposite to the radial direction with respect to the central salient pole 4 and the rotary shaft 7 (see FIG. 11B). The action of the weight 21 is the same as that of the first embodiment.
  • a planar commutator 11 is connected to the armature core 3 around the rotation axis 7.
  • three substantially trapezoidal segments one each of three phases of U, V, and W
  • a terminal portion 14 is formed in the segment 13, and the starting ends and the ends of the three coils 8, 9, 10 described above are electrically connected to the predetermined terminal portion 14.
  • the in-phase segments 13 are electrically connected by wiring (not shown).
  • the open angle of the pair of brushes 18 in sliding contact with the segments 13 of the commutator 11 is 180 [°].
  • the rotational operation of the vibration motor 1 according to the first embodiment will be described with reference to FIG. A description will be given starting from a position where the circumferential center of the central salient pole 4 and the circumferential center of the opposing magnetic pole (here, the uppermost N pole in the figure) coincide as shown in FIG. 3A.
  • ⁇ 80 °.
  • FIG. 3A from the state in which the vibration motor 1 is stopped (the state in which each coil 8, 9, 10 is not energized), current is supplied to each coil via the commutator 11, thereby achieving one side.
  • the south pole is excited to the salient pole 5 and the north pole is excited to the other side salient pole 6.
  • the coil 8 is not energized, so the central salient pole 4 is not excited by the magnetic pole.
  • the S pole excited in one side salient pole 5 repels with the S pole near the field magnet 2 and is attracted to the near N pole, and further excited in the other side salient pole 6
  • the armature core 3 is displaced in the clockwise direction of the arrow.
  • the vibration motor 1 is started.
  • the hatched portion of the tip of each brush 18 in each figure is a contact portion with the commutator 11 It is.
  • FIG. 3B The state immediately after activation is shown in FIG. 3B.
  • the figure is illustrated in the position where the armature core 3 has rotated 5 [°] from the starting point.
  • a magnetic pole (N pole) is excited in the central salient pole 4.
  • the magnetic poles of the both salient poles 5 and 6 do not change.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • Ru The state immediately after activation is shown in FIG. 3B.
  • the figure is illustrated in the position where the armature core 3 has rotated 5 [°] from the starting point.
  • a magnetic pole (N pole) is excited in the central salient pole 4.
  • the magnetic poles of the both salient poles 5 and 6 do not change.
  • the N pole of the central salient pole 4 receives the repulsive force
  • the S pole of one of the two salient poles 5 receives the repulsive force from the S pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force from the N pole of the field magnet 2 on the front side in the rotational direction.
  • the N pole of the other side salient pole 6 receives the repulsive force by the N pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force on the S pole of the field magnet 2 on the front side in the rotational direction.
  • the armature core 3 continues to rotate in the clockwise direction.
  • the thick arrows indicate that the rotational force is relatively large, and the thin arrows indicate that the rotational force is relatively small (the same applies to the following drawings).
  • the state where the armature core 3 is rotated by 20 [°] from the starting point is shown in FIG. 3C.
  • the magnetic pole (N pole) excited to the central salient pole 4 does not change.
  • the magnetic pole (S pole) excited to one side salient pole 5 does not change.
  • the magnetic poles are not excited on the other side salient poles 6.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • the S pole of one of the two salient poles 5 receives the repulsive force from the S pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force from the N pole of the field magnet 2 on the front side in the rotational direction. No rotational force is generated on the other side salient poles 6.
  • the armature core 3 continues to rotate in the clockwise direction.
  • FIG. 3D shows a state immediately after the armature core 3 is rotated by 20 [°] from the start point.
  • FIG. 3D shown at a position of 25 [deg.]
  • the magnetic pole (N pole) excited to the central salient pole 4 does not change.
  • the magnetic pole (S pole) excited to one side salient pole 5 does not change.
  • the direction of the current supplied to the coil 10 is switched by the commutator 11 (segment 13) in the reverse direction from the direction immediately before the 20 ° rotation, and the other side salient poles 6 are excited to the S pole.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • the S pole of one of the two salient poles 5 receives the repulsive force from the S pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force from the N pole of the field magnet 2 on the front side in the rotational direction.
  • the south pole of the other side salient pole 6 receives the repulsive force from the south pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force on the north pole of the field magnet 2 on the front side in the rotational direction .
  • the armature core 3 continues to rotate in the clockwise direction.
  • the state in which the armature core 3 is rotated by 40 ° from the starting point is shown in FIG. 3E.
  • the magnetic pole (N pole) excited to the central salient pole 4 does not change.
  • the magnetic poles are not excited in one of the two salient poles 5.
  • the magnetic pole (S pole) excited to the other side salient pole 6 does not change.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • Ru No rotational force is generated on one of the two salient poles 5.
  • the south pole of the other side salient pole 6 receives the repulsive force of the south pole of the field magnet 2 on the rear side in the rotational direction, and receives the attraction force of the north pole of the field magnet 2 on the front side in the rotational direction.
  • the armature core 3 continues to rotate in the clockwise direction.
  • FIG. 3F a state immediately after the armature core 3 is rotated by 40 [°] from the start point is illustrated in FIG. 3F (shown at a position of 45 [deg.]).
  • the magnetic pole (N pole) excited to the central salient pole 4 does not change.
  • the magnetic pole (S pole) excited to the other side salient pole 6 does not change.
  • the direction of the current supplied to the coil 9 is switched by the commutator 11 (segment 13) in the opposite direction to the direction immediately before the 40 [°] rotation, and one of both side salient poles 5 is excited to the N pole.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • the N pole of one of both side salient poles 5 receives the repulsive force by the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attraction force from the S pole of the field magnet 2 on the front side in the rotational direction.
  • the south pole of the other side salient pole 6 receives the repulsive force from the south pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force on the north pole of the field magnet 2 on the front side in the rotational direction .
  • the armature core 3 continues to rotate in the clockwise direction.
  • the salient poles of the armature core 3 are field-operated by appropriately switching the energization direction to each coil 8, 9 and 10 at every rotation angle of 20 [deg.] By the nine segments 13 of the commutator 11. Repulsion and attraction are repeated on the magnetic poles of the magnet 2 to be urged to rotate. Then, when the energization to each coil 8, 9, 10 is stopped, the magnetic poles of the respective salient poles 4, 5, 6 are demagnetized, and the rotation of the armature core 3 is stopped. When the position other than the above is used as the starting point, the rotational force generated between the magnetic pole of each salient pole and the field magnet 2 at the middle position in the above description may be considered as the starting force.
  • the central salient pole is produced by energizing each coil via the commutator 11 from the state where the vibration motor 1 is stopped (the state where each coil 8, 9, 10 is not energized).
  • An N pole is excited at 4 and an N pole is excited at one of both side salient poles 5.
  • the coil 10 is not energized, so the other side salient poles 6 are not excited by the magnetic poles.
  • the N pole excited in one of the two salient poles 5 repels with the N pole in the vicinity of the field magnet 2 and is attracted to the S pole in the vicinity, whereby the armature core 3 is in the clockwise direction of the arrow. Displace.
  • FIG. 8B This figure illustrates the armature core 3 at a position rotated 8 [°] from the starting point. At this time, the magnetic pole (N pole) excited to the central salient pole 4 and the magnetic pole (N pole) excited to one of the two salient poles 5 do not change. An N pole is excited in the other side salient pole 6.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • the N pole of one of both side salient poles 5 receives the repulsive force by the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attraction force from the S pole of the field magnet 2 on the front side in the rotational direction.
  • the N pole of the other side salient pole 6 receives the repulsive force by the N pole of the field magnet 2 on the front side in the rotational direction, and the attraction force from the S pole of the field magnet 2 on the rear side in the rotational direction
  • a rotational force is generated in the opposite direction (here, counterclockwise direction) to the rotation direction (here, clockwise direction) of the iron core 3.
  • the arrows displayed corresponding to the positions of the respective salient poles indicate that the thick arrows represent relatively large rotational force, and the thin line arrows represent relatively small rotational force (the same applies to the following drawings). ).
  • the magnetic poles are not excited in one of the two salient poles 5.
  • the magnetic pole (N pole) excited to the other side salient pole 6 does not change.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction. Ru.
  • no rotational force is generated on one side salient pole 5 and the other side salient pole 6.
  • the armature core 3 continues to rotate in the clockwise direction.
  • a state immediately after the armature core 3 is rotated by 15 [°] from the start point is illustrated in FIG.
  • the magnetic pole (N pole) excited to the central salient pole 4 does not change.
  • the magnetic pole (S pole) excited to the other side salient pole 6 does not change.
  • the direction of the current supplied to the coil 9 is switched by the commutator 11 (segment 13) from the direction immediately before the 15 [°] rotation to reverse, and one of both side salient poles 5 is excited to the S pole.
  • the N pole of the central salient pole 4 receives the repulsive force of the N pole of the field magnet 2 on the rear side in the rotational direction, and receives the attracting force of the S pole of the field magnet 2 on the front side in the rotational direction.
  • the N pole of the other side salient pole 6 receives the repulsive force by the N pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force of the S pole of the field magnet 2 on the front side in the rotational direction .
  • the S pole of one of both side salient poles 5 receives the repulsive force by the S pole of the field magnet 2 on the front side in the rotational direction and the attraction force from the N pole of the field magnet 2 on the rear side in the rotational direction
  • a rotational force is generated in the opposite direction (here, counterclockwise direction) to the rotation direction (here, clockwise direction) of the iron core 3.
  • FIG. 8F shows a state immediately after the armature core 3 has rotated by 30 ° from the start point (shown at a position of 38 °). At this time, the magnetic pole (S pole) excited to one of both side salient poles 5 does not change.
  • the magnetic pole (N pole) excited to the other side salient pole 6 does not change. Also, the direction of the current supplied to the coil 8 is switched by the commutator 11 (segment 13) in the opposite direction to the direction immediately before the 30 ° rotation, and the central salient pole 4 is excited to the S pole. Thereby, the S pole of one side salient pole 5 receives the repulsive force by the S pole of the field magnet 2 on the rear side in the rotational direction, and the attraction force from the N pole of the field magnet 2 on the front side in the rotational direction Be done.
  • the N pole of the other side salient pole 6 receives the repulsive force by the N pole of the field magnet 2 on the rear side in the rotational direction, and is rotationally biased by the attraction force of the S pole of the field magnet 2 on the front side in the rotational direction .
  • the south pole of the central salient pole 4 receives repulsion force from the south pole of the field magnet 2 on the front side in the rotational direction and attraction force from the north pole of the field magnet 2 on the rear side in the rotational direction.
  • a rotational force is generated in the direction of rotation (here, clockwise) and in the opposite direction (here, counterclockwise).
  • the vibration motor 1 in the configuration using the flat-type iron core motor having the three salient pole distributed armature, thinning and downsizing of the outer dimensions are suppressed while suppressing cost increase. It is possible to improve the vibration amount and the rotational torque.
  • the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the present invention.
  • the number of magnetic poles of the field magnet is not limited to two poles, four poles, six poles, and eight poles, and ten poles (three commutators at five positions for three phases) and twelve poles (three commutators for three phases each) It is applicable like ...,.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Dc Machiner (AREA)
PCT/JP2009/064563 2008-09-12 2009-08-20 振動モータ WO2010029837A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020117005802A KR101056265B1 (ko) 2008-09-12 2009-08-20 진동 모터
CN2009801360196A CN102149482B (zh) 2008-09-12 2009-08-20 振动电动机
JP2010510605A JP4722225B2 (ja) 2008-09-12 2009-08-20 振動モータ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-234507 2008-09-12
JP2008234507 2008-09-12

Publications (1)

Publication Number Publication Date
WO2010029837A1 true WO2010029837A1 (ja) 2010-03-18

Family

ID=42005096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/064563 WO2010029837A1 (ja) 2008-09-12 2009-08-20 振動モータ

Country Status (4)

Country Link
JP (2) JP4722225B2 (zh)
KR (1) KR101056265B1 (zh)
CN (1) CN102149482B (zh)
WO (1) WO2010029837A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005852A (zh) * 2010-12-08 2011-04-06 沈阳工业大学 一种用于径向磁通电动机噪声与振动抑制的装置
CN102237749A (zh) * 2010-04-28 2011-11-09 三洋精密株式会社 扁平形振动电机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109802546A (zh) * 2019-03-07 2019-05-24 王旭东 往复摆动电机及电动牙刷
FR3093934B1 (fr) * 2019-03-20 2022-05-06 Exel Ind Système de mise en mouvement d’une buse d’application d’un produit
DE102019108093A1 (de) * 2019-03-28 2020-10-01 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg Vibrationsvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001269620A (ja) * 2001-03-02 2001-10-02 Tokyo Parts Ind Co Ltd コアード型ブラシレス振動モータ
JP2003164804A (ja) * 2001-11-30 2003-06-10 Hosiden Corp 振動モータ
JP2005185078A (ja) * 2003-12-24 2005-07-07 O Planning:Kk 振動モータ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1206240A (zh) * 1997-07-04 1999-01-27 东京零件工业股份有限公司 加大重心移动的扁平无铁心振动电机
CN1367569A (zh) * 2001-01-24 2002-09-04 日本胜利株式会社 振动型无刷电动机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001269620A (ja) * 2001-03-02 2001-10-02 Tokyo Parts Ind Co Ltd コアード型ブラシレス振動モータ
JP2003164804A (ja) * 2001-11-30 2003-06-10 Hosiden Corp 振動モータ
JP2005185078A (ja) * 2003-12-24 2005-07-07 O Planning:Kk 振動モータ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102237749A (zh) * 2010-04-28 2011-11-09 三洋精密株式会社 扁平形振动电机
CN102005852A (zh) * 2010-12-08 2011-04-06 沈阳工业大学 一种用于径向磁通电动机噪声与振动抑制的装置

Also Published As

Publication number Publication date
KR20110048554A (ko) 2011-05-11
JPWO2010029837A1 (ja) 2012-02-02
KR101056265B1 (ko) 2011-08-11
CN102149482B (zh) 2013-03-27
JP4722225B2 (ja) 2011-07-13
CN102149482A (zh) 2011-08-10
JP2010094010A (ja) 2010-04-22

Similar Documents

Publication Publication Date Title
JP3146492B2 (ja) ブラシレスｄｃモータ
EP1727262A2 (en) Stepping motor for generating vibration
US6636007B2 (en) DC brushless vibration motor
JP4728765B2 (ja) 回転機
WO2010029837A1 (ja) 振動モータ
KR20030003717A (ko) 편평형 진동모터
JP2004229404A (ja) リラクタンスモータおよびリラクタンスモータ用ステータの磁石
US20020093260A1 (en) Axial directional gap type eccentric rotor having stop position maintaining unit and flat coreless vibration motor using the rotor
JP2003009490A (ja) 振動モータ
TWI327406B (zh)
KR20000064092A (ko) 편평형 코아리스 진동 모터
JP4332024B2 (ja) 振動モータ
JP2009050093A (ja) 振動モータ
JP4565133B2 (ja) インナーロータ型振動モータ
JP3759092B2 (ja) 偏心ロータと同ロータを備えた扁平コアレス振動モータ
JP4538290B2 (ja) 振動モータ
JP2007175579A (ja) 振動モータ
JP3581706B2 (ja) 円盤形偏心ロータと同ロータを備えた扁平コアレス振動モータ
JP3707027B2 (ja) マイクロ扁平振動モータの最適化構造
KR100797279B1 (ko) Ｄｃ 무브러시 진동 모터
JP2000188847A (ja) 小型コアード振動モータ
JP2006014441A (ja) 偏心ロータ、同偏心ロータを備えた扁平コアレス振動モータ
JPH11289734A (ja) 小型振動モータとその製造方法
CN202663235U (zh) 振动电动机
JP2000152585A (ja) ホールディングトルクを用いた扁平コアレス振動モータ

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980136019.6

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2010510605

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09812984

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20117005802

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09812984

Country of ref document: EP

Kind code of ref document: A1