WO2004015843A1 - 積層コイル及びこれを用いたブラシレスモータ - Google Patents
積層コイル及びこれを用いたブラシレスモータ Download PDFInfo
- Publication number
- WO2004015843A1 WO2004015843A1 PCT/JP2003/010069 JP0310069W WO2004015843A1 WO 2004015843 A1 WO2004015843 A1 WO 2004015843A1 JP 0310069 W JP0310069 W JP 0310069W WO 2004015843 A1 WO2004015843 A1 WO 2004015843A1
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- WIPO (PCT)
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- coil
- laminated
- connection line
- laminated coil
- motor
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Classifications
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- 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
- H02K3/26—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of printed conductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
Definitions
- the present invention relates to a small, thin, and inexpensive brushless motor and a laminated coil used for the same.
- Japanese Utility Model Application Laid-Open No. 58-172345 discloses a flat brushless motor having a stator coil and a rotor having a permanent magnet disposed opposite to the stator coil.
- a flat brushless motor is disclosed in which a coil is formed by laminating a plurality of sheet-shaped coils made of a patterned conductor spirally formed on an insulating substrate surface.
- This flat brushless motor has a three-phase eight-pole sheet coil 50 opposed to the magnetic pole surface of a rotor magnet 100 and is fixed to a stator yoke as shown in FIGS.
- a magnetic pole portion is formed.
- the one-phase coil is formed of one 8-pole flat coil, and the adjacent coil poles 200 are connected in series in a single stroke so as to have opposite polarities.
- the plurality of sheet-shaped coils 50 are stacked concentrically, and each coil 50 is held by a coil holder 125 such as a yoke or a printed circuit board (PCB), and the end of each coil 50 is a printed circuit board (PCB). It is connected to the 120 pattern surfaces with solder or the like.
- Each sheet-shaped coil 50 is formed by applying a spiral pattern conductor on the surface of a thin insulating sheet 210 by etching or plating, etc., to form a coil pole 200.
- Japanese Patent Application Laid-Open No. 64-59902 discloses that a coil conductor pattern is formed on a green sheet obtained from ceramic powder by, for example, a screen printing technique or the like to form a coil sheet. It discloses a laminated coil for a brushless motor in which patterns are conducted, and further, a coil conductor pattern and a green sheet are integrally fired.
- a spiral pattern conductor is formed on a thin insulating sheet surface by etching, plating, or the like to form a coil pole, which is fixed to a predetermined direction in the circumferential direction.
- the three-phase coils are arranged at different angles, so (1) it is necessary to bond the laminated coil layers with a uniform adhesive layer, and (2) the position of the coil Short-circuits, etc., cause uneven rotation and torque ripple. (3) There is a limit to the mechanical strength of polyimide, polyester, etc. sheets used as insulation sheets. Place insulation sheets on PCBs and yokes. In general, it was difficult to further reduce the size and thickness.
- an object of the present invention is to provide a small and thin laminated coil having high mass productivity, having no problems such as uneven rotation and torque ripple, and having excellent motor efficiency and high strength, and a brushless motor using the same. It is. Disclosure of the invention
- the first laminated coil of the present invention is for an integrated n-phase motor having a plurality of coil poles composed of a coil formed by a conductor pattern in a laminated body composed of a plurality of insulator layers (where n is 2 The above natural number) is a laminated coil, the input terminal and the output terminal formed on the outer surface of the laminated body, and the first connection line connecting the input terminal and the coil pole.
- 2 connection lines, 1st connection line and The second connection line is formed of a conductor pattern, and the coil pole is formed on a plurality of insulator layers sandwiched between the first connection line and the second connection line.
- the number of coil poles is a multiple of n, and the number of coil poles for each phase is preferably equal.
- the number of motor phases n can be selected from two or more natural numbers. If n is 2 or 3, the motor can be downsized and stable motor characteristics can be obtained.
- the laminated body has a through hole in which the rotating shaft and the z or the bearing of the brushless motor are arranged at substantially the center.
- the center of the through hole almost coincides with the center of the rotor shaft.
- the first connection line includes an annular conductor surrounding the through-hole, a first conductor connecting the annular conductor to the input terminal, and a second conductor extending from the annular conductor and connecting to the coil pole.
- the input terminal, the output terminal, and the first connection line are preferably formed on one main surface of the laminate.
- Each of the second connection lines has two arc-shaped portions having different radii and a radial portion connecting the two arc-shaped portions.
- the rotation performance of the motor is not hindered. If the second conductor connected to the coil pole and the first conductor connected to the input terminal extend radially from the annular conductor, the effective length of the coil increases, albeit slightly. The motor performance is improved.
- the coils constituting the coil poles of the plurality of phases are formed on one surface of the same layer, and the coils constituting the coil poles of the same phase are arranged around the motor rotation axis so as not to be adjacent to each other. ° They are arranged at symmetrical positions and are connected to each other by the second connection line.
- the number of turns of the coil pole can be increased, and the distance between each coil pole and the permanent magnet of the rotor can be made substantially the same, so that the motor characteristics are improved.
- the input terminal, the output terminal, and the first connection line are formed on one main surface of the laminate, the connection with the printed circuit board (PCB) is easy.
- the input terminal and the output terminal are preferably LGA (Land Grid Array) and BGA (Ball Grid Array), respectively.
- the second laminated coil of the present invention is an integrated laminated coil for a three-phase motor having a plurality of coil poles composed of a coil formed by a conductor pattern in a laminated body composed of a plurality of insulator layers.
- the stacked body is formed in a rectangular flat plate shape, and one input terminal and three output terminals are formed at four different corners of the same main surface of the stacked body.
- the laminated coil may be annular.However, in order to achieve the annular shape, means such as punching with a die is separately required. The process of manufacturing is complicated. On the other hand, by forming the laminate into a rectangular flat plate shape, it becomes easy to form individual laminated coils from a laminated substrate including a plurality of laminates as described later.
- the laminated coil can be reduced in size without deteriorating motor performance. You can dagger. Since the input terminal and the output terminal can be made relatively large, the terminal connection strength with the PCB can also be improved. A portion where the coil pole is not formed in the laminate can be effectively used.
- the coil pole is formed by connecting coils formed on a plurality of insulator layers so as to overlap in the laminating direction, and the coils are wound clockwise at least from the inner peripheral side to the outer peripheral side. It is composed of a turned first coil and a second coil wound clockwise from the outer periphery to the inner periphery, and the first coil and the second coil are formed in a laminate. It is preferable that the first coil and the second coil have the same winding direction because they are connected through a through hole.
- the coil poles of different phases are arranged at equal angular intervals around the motor rotation axis.
- the in-phase coil pole be arranged at a rotationally symmetric position at 180 ° around the rotation center of the motor rotation axis. If coil poles of substantially the same size are arranged at equal angular intervals around the motor rotation axis, the back electromotive force of each coil pole is generated axisymmetrically with respect to the motor rotation axis, so that the motor rotation accuracy Can be improved.
- the coil is a fan-shaped spiral coil, and the opening angle of the fan-shaped spiral coil is set to 55 ° or less about the rotation axis of the motor.
- the opening angle of the spiral coil is set according to the width of the conductor pattern constituting the spiral coil, the number of coils, the number of motor phases, etc.In the case of a three-phase motor with a six-pole structure, the upper limit of the opening angle is 55 ° Is preferred.
- a brushless motor includes the above-described laminated coil as a stator, and the laminated coil is disposed so as to face a rotor having permanent magnets having alternately different magnetic poles via a magnetic gap. It is characterized by having. It is preferable to provide an electric signal control unit for periodically supplying a current for each coil pole of a different phase of the laminated coil.
- FIG. 1 is a perspective view showing a laminated coil according to one embodiment of the present invention
- FIG. 2 is an exploded view showing the internal structure of the laminated coil of FIG.
- FIG. 3 is a schematic diagram showing an equivalent circuit of the laminated coil of FIG.
- FIG. 4 (a) is an enlarged plan view showing an example of a plurality of coils formed on the insulating layer of the laminated coil of the present invention.
- FIG. 4 (b) is an enlarged plan view showing another example of a plurality of coils formed on the insulator layer of the laminated coil of the present invention.
- FIG. 5 (a) is an enlarged view showing the first coil of the laminated coil according to one embodiment of the present invention
- FIG. 5 (b) is an enlarged view showing a second coil of the laminated coil according to one embodiment of the present invention
- FIG. 5 (c) is an enlarged view showing a third coil of the laminated coil according to one embodiment of the present invention.
- FIG. 6 is a partial cross-sectional view showing a laminated coil according to one embodiment of the present invention
- FIG. 7 is an enlarged plan view showing a through-hole portion of the laminated coil according to one embodiment of the present invention.
- FIG. 8 is an exploded perspective view showing an internal connection state of the laminated coil according to one embodiment of the present invention.
- FIG. 9 is an exploded perspective view showing an example of the method for manufacturing a laminated coil of the present invention
- FIG. 10 is a plan view showing a laminated substrate on which a plurality of laminated coils of the present invention are formed.
- FIG. FIG. 12 is a cross-sectional view illustrating a brushless motor according to an embodiment
- FIG. 12 is a plan view illustrating an annular magnet used in the brushless motor of the present invention
- FIG. 13 is a cross-sectional view illustrating a brushless motor according to another embodiment of the present invention.
- FIG. 14 is a partially enlarged view showing a conventional sheet coil.
- FIG. 15 is a partial cross-sectional view showing a conventional sheet coil.
- FIG. 16 is a cross-sectional view showing a conventional brushless motor using a sheet coil.
- FIG. 1 is a perspective view showing a laminated coil 1 according to a first embodiment
- FIG. 2 is an exploded view showing an internal structure thereof.
- This laminated coil 1 is formed by integrating a plurality of coil poles, and is composed mainly of Ag, Cu, etc. on a green sheet of low temperature fired ceramic (LTCC) material having a thickness of 20 / im to 200 im.
- a desired conductive pattern is formed by printing a conductive paste, a green sheet having the conductive pattern is manufactured, and a plurality of green sheets are stacked and fired.
- the width of the conductor pattern forming the coil pole is preferably about 100 // ⁇ to 400 ⁇ .
- a ceramic slurry composed of ceramic powder, a binder and a plasticizer is applied to a carrier film composed of a polyethylene terephthalate film or the like so as to have a uniform thickness.
- a green sheet having a thickness of several hundred ⁇ is formed. Cut the dried green sheet to the specified dimensions with the carrier sheet attached.
- the ceramic powder for example, (a) A1 2 0 3 as a main component, Si0 2, SrO, CaO, PbO, low temperature sinterable dielectric to double ingredient at least one Na 2 0 and K 2 O body material, (b) AI2O3 as a main component, MgO, Si0 2 and the low-temperature sinterable dielectric material with multiple components at least one GdO, (c) Bi 2 0 3, Y 2 0 3, CaC0 3, Fe 2 O 3, iN 2 0 3 and the low-temperature sinterable magnetic ceramic material containing at least one V 2 0 5 and the like.
- a dielectric ceramic having a main component of Al, Si, Sr and Ti and a sub-component of Bi was used.
- the main component of this dielectric ceramic is 10 to 60% by mass when the total is 100% by mass.
- Al of 0 (A1 2 0 3 basis), Si 25-60 wt% (Si0 2 equivalent), Sr of from 7.5 to 50 wt% (SrO conversion), and a Ti of 20 wt% or less (Ti0 2 equivalent) Contained.
- subcomponent 0.1 contained Bi of 10 mass 0/0 (Bi 2 0 3 basis).
- This dielectric ceramic has a dielectric constant of 7 to 9, a three-point bending strength of 240 MPa or more (JIS R 1601, sample: length 36 mm, width 4 mm, thickness 3 mm, distance between supports 30 mm), and It has a Young's modulus of 110 GPa or more and has high flexural strength and Young's modulus as an LTCC material.
- a coil (not shown), input terminals, output terminals, and the like, described later, on such a green sheet using a conductor pattern, they are laminated and crimped in a predetermined order, and a flat laminate having a thickness of approximately 0.4 mm is formed. 300.
- the coil poles are connected by forming through holes (not shown) in the green sheet and connecting the conductor patterns between the sheets as appropriate. A portion of the laminate, which is to be the center of rotation of the motor rotation shaft, was punched out by a mold, and a through hole 10 having a diameter of 2 mm was formed by laser processing.
- a plurality of divided grooves parallel to each other and a plurality of divided grooves 320 orthogonal to the divided grooves 320 were provided on the main surface of the flat laminate 300 with a steel blade at a depth of approximately 0.1 mm.
- the depth of the dividing groove 320 should be 50 ⁇ ! From the viewpoint of division and ease of handling. It is preferably within the range of ⁇ 300 ⁇ m.
- the input terminals and output terminals of the laminated coil are formed on the outer surface of the laminated substrate 300a, and Ni plating and Au plating are performed by electroless plating.
- the laminated substrate 300a was divided along the dividing grooves 320 to form a laminated coil 1 for a brushless motor having an outer dimension of 8 mm X 8 mm X 0.3 mm as shown in FIG.
- This laminated coil is for a brushless motor using a three-phase drive power supply, and has an equivalent circuit shown in FIG.
- second connection lines 300a, 300b, 300c for connecting in-phase coil poles are formed in the lowermost layer (first layer).
- the second connection lines 300a, 300b, 300c are arranged at equal angular intervals around a motor rotation axis, which will be described later, and each second connection line has two arc-shaped portions centered on the motor rotation axis. And a radial part connecting the two arc-shaped parts.
- connection lines 300a, 300b, 300c configured as described above connect in-phase coil poles arranged at rotationally symmetric positions with respect to the rotation center of the motor rotation shaft. Since the two arc-shaped portions are arranged on the circumference around the motor rotation axis, the rotation characteristics of the motor are not hindered, and the torque characteristics are slightly improved.
- a conductive paste may be printed or transferred on the main surface of the laminate, in which case at least one layer of Darling sheet can be reduced. Therefore, the thickness of the laminated coil can be reduced.
- a second layer having a plurality of coils formed thereon is stacked on the first layer. These coils are arranged at equal angular intervals around the rotation axis of the motor to form a multi-phase coil pole.
- FIG. 4A shows an enlarged plan view of a plurality of coils formed in the second layer.
- six coils 251g, 252g, 253g, 251h, 252h, 253h, which are three-phase coil poles, are formed on the same layer at intervals of 60 °.
- the above six coils are composed of a first coil pattern 251h, 252h, 253h and a second coil pattern 251g, 252g, 253g, and the first coil patterns 251h, 252h, 253h are clockwise from the outer side to the inner side. And has a through hole (indicated by a black circle in Fig. 2) at the outer end to connect to the second connection line.
- the second coil patterns 251g, 252g, and 253g are inside from the outer side. It is wound clockwise on the peripheral side, and a through-hole part for connecting to the second connection line is formed at the inner peripheral end. Have been.
- the first coil patterns 251h, 252h, 253h and the second coil patterns 251g, 252g, 253g are alternately arranged around the motor rotation axis.
- the first coil patterns 251h, 252h, 253h and the second coil patterns 251g, 252g, 253g are both wound clockwise from the outer peripheral side to the inner peripheral side. Called 2 coils.
- the coil patterns located at positions that are 180 ° rotationally symmetric with respect to the motor rotation axis are connected in series by the second connection line, and have the same phase coil pole. That is, the first coil pattern 251h and the second coil pattern 251g are connected by the second connection line 300a, the first coil pattern 252h and the second coil pattern 252g are connected by the second connection line 300b, The first coil pattern 253h and the second coil pattern 253g are connected by a second connection line 300c, and each constitute a coil pole. That is, the connection line 300a is at the midpoint of the second phase coil pole 61 shown in FIG. 3, the connection line 300b is at the midpoint of the first phase coil pole 60, and the connection line 300c is at the midpoint of the third phase coil pole 62 shown in FIG. Each constitutes a point.
- a third layer on which a plurality of coils are formed is arranged on the second layer.
- the plurality of coils are six coils 251e that are three-phase coil poles formed on the same layer at intervals of 60 ° around the motor rotation axis. , 252e, 253e, 25 If, 252f, 253f, each of which is a spiral-shaped koinole wound four turns.
- the third coil patterns 251f, 252f, 253f wound clockwise from the inner peripheral side to the outer peripheral side on the third layer are the first coil patterns 251h, 252h, 253h (the outer peripheral side) formed on the second layer. Is wound clockwise on the inner circumference side) and overlap in the laminating direction.
- the fourth coil patterns 251e, 252e, and 253e formed on the third layer correspond to the second coil patterns 251g formed on the second layer.
- 252g and 253g (wrapped clockwise from the outer periphery to the inner periphery) in the laminating direction.
- Corresponding coils in the second and third layers are connected in the same winding direction via through-hole portions.
- the third coil pattern 251f, 252f, 253f and the fourth coil pattern 251e, Both 252e and 253e are wound clockwise from the inner circumference to the outer circumference, and in the laminated coil of the present invention, these are referred to as first coils.
- the coil of the fourth layer is configured substantially the same as the coil of the second layer, and the coil of the fifth layer is configured substantially the same as the coil of the third layer.
- the in-phase spiral coils formed on the second to fifth layers and overlapping in the laminating direction are, for example, focusing on the coil patterns 251a, 251c, 251e, and 251g, the coils wound in a clockwise direction from the inner peripheral side to the outer peripheral side.
- the first coil pattern 251a, the second coil pattern 251c connected to the outer periphery of the first coil pattern 251a and wound clockwise from the outer periphery to the inner periphery, and the inner periphery of the second coil pattern 251c A third coil pattern 251e connected to the end and wound clockwise from the inner circumference to the outer circumference; and a third coil pattern 251e connected to the outer circumference of the third coil pattern 251e and wound clockwise from the outer circumference to the inner circumference. Since the fourth coil pattern 251g has the same winding direction, a current flows in the first coil and the second coil in a certain direction.
- each coil has four turns, and the same-phase coil poles formed in different areas in a plane are connected to increase the number of turns of the coil per phase to 32 turns. Therefore, a high torque of the motor can be achieved.
- the number of turns of the coil can be easily adjusted by increasing or decreasing the number of layers on which the coil is formed.
- FIG. 5 (a) shows the first coil pattern 251h formed on the second layer
- FIG. 5 (b) shows the third coil pattern 251f formed on the third layer.
- each coil it is desirable to increase the number of turns of each coil in order to improve the c- torque performance in which each coil is a spiral coil having four turns. Increasing the number of turns by narrowing increases the DC resistance. Also, the coil formation area is restricted by the number of motor phases and the external dimensions of the motor. Therefore, the appropriate number of turns for each coil is 2 to 6 turns.
- the shape of each coil is preferably fan-shaped.
- the opening angle ⁇ of each coil is determined by the number of phases of the motor, the number of coils, etc., and is set appropriately so as not to contact the adjacent coil In this embodiment, the opening angle ⁇ of each coil is 50 °.
- FIG. 5 (c) shows another preferred configuration example of the coil. If the coil line portion (coil effective length L) that contributes to the torque characteristics extends radially around the rotation axis, the generated force acts most efficiently on the rotation of the motor. The torque is obtained. In addition, the circumferential portion of the coil that does not contribute to the torque characteristics is formed in an arc shape along the circumference around the motor rotation axis, so that the rotation performance of the motor is not hindered.
- FIG. 6 is a partial sectional view of the laminated coil.
- the conductors of the coils are stacked in a staggered manner so that the conductors of the coils do not overlap in the stacking direction. If the distance between adjacent coils in the stacking direction is narrow, arranging the coils so that the conductors overlap in the stacking direction and crimping them will deform the coil conductors and crimp the part with and without the conductor formed. The force is not uniform, and delamination (delamination) and minute cracks may occur. Therefore, the configuration shown in FIG. 6 reduces the collapse and distortion of the coil conductor and suppresses delamination and the like.
- the green sheet is more easily deformed than the conductor of the coil, if the coils are stacked in a staggered manner, the intervals between the coil patterns 251b, 251d, 251f, and 251h can be narrowed. Therefore, the coils are formed in a substantially dense state, and the space factor of the conductor can be improved.
- the first connection line includes an annular conductor 210 formed so as to surround the through hole 10 formed substantially at the center of the laminate, and a first conductor that connects the annular conductor 210 to the input terminal IN. And a second conductor section 201a, 201b, 201c extending from the annular conductor section 210 and connecting to a coil pole.
- the first phase coil pole 60 disposed between the input terminal IN and the output terminal OUT1 is formed by the coils 252a to 252h, and the input terminal IN and the output Form the second phase coil pole 61 between the terminals OUT2 and coils 251a to 251h, and place between the input terminal IN and the output terminal OUT3.
- a third phase coil pole 62 was formed with coils 253a-253h.
- the center of the through-hole 10 formed substantially at the center of the laminate almost coincides with the center of the axis of the rotor.
- the through-holes 10 are formed by punching the laminate with a mold or by laser processing, but are formed in a process different from the process of forming the input terminals and output terminals of the coil. It may shift from the position.
- the annular conductor 210 is formed so as to surround the through-hole 10 as shown in FIG. 5, the center 410 of the through-hole 10 and the center 400 of the annular conductor 210 can easily be displaced.
- the positions of the centers 410 and 400 are measured with a measuring device such as a three-dimensional measuring device, the displacement can be easily measured. As a result, the quality of the laminated coil can be easily and quantitatively determined.
- FIG. 11 shows an example of a brushless motor configured using the laminated coil of the present invention.
- the brushless motor shown in FIG. 11 has a first rotor 101a in which an annular magnet 100 having alternating north and south poles shown in FIG. 12 is fixed to a yoke 105a, and is coupled to the center of the first rotor 101a.
- a drive current is periodically supplied to a rotating shaft 130, a stator 125 having a laminated coil 1 facing the first rotor 101a through a predetermined magnetic gap, and a coil pole 50 formed in the laminated coil 1.
- An electric signal control unit (not shown), a PCB on which a circuit pattern to be connected to input terminals and output terminals formed on the laminated coil 1 is formed, and a first rotor 101a that rotates smoothly. And a bearing 150 fixed to the stator 125 via the pushing 140 and supporting the rotating shaft 130 connected to the first rotor 101a.
- This brushless motor uses three drive power supplies.
- the ring magnet 100 is made of a rare earth sintered magnet such as a Nd-Fe-B sintered magnet, a SnrCo sintered magnet, a rare earth pound magnet such as Nd_Fe-B, Sm-Fe-N, SnrCo, or a ferrite sintered. It is preferable to use a permanent magnet material having a high holding force such as a magnet. By using a permanent magnet material having a specific coercive force iHc higher than the residual magnetic flux density Br, the annular magnet 100 can be made thin.
- the annular magnet 100 is not limited to an integral ring magnet, but may be a fan-shaped or rectangular magnet obtained by dividing a ring.
- a drive current is supplied from the electric signal control unit to the coil pole 50 on the multilayer coil 1 to generate a magnetic field.
- This magnetic field acts on the magnetic field of the annular magnet 100 of the first rotor 101a to generate an electromagnetic force.
- torque is generated between the first rotor 101a and the stator 125, and as a result, the first rotor 101a rotates by a predetermined angle.
- the first rotor 105a rotates continuously.
- the laminated coil 1 may be provided with a land for the magnetic pole sensor of the first rotor 101a.
- This magnetic pole sensor is constituted by, for example, a Hall element.
- a line pattern connecting the Hall element and the PCB on which the circuit pattern is formed may be formed in the multilayer coil 1.
- an FG (Frequency Generator) coil may be formed inside or on the main surface of the multilayer coil 1, or a cavity may be provided in the multilayer coil 1 and a Hall element may be arranged.
- the input terminal and the output terminal are formed on one main surface of the laminated coil 1, they can be directly mounted on a PCB, and electrical connection with a circuit pattern is easy. Further, since the input terminal and the output terminal are formed at the four corners on one main surface of the laminated coil 1, it can be mounted around the through hole 135 of the PCB.
- the laminated coil 1 can be made thin by laminating the coils, and since the ceramic material used for the laminated body has high bending strength and Young's modulus, the laminated body has sufficient strength even if it is thin. Therefore, the rotor can be provided close to the PCB, and the motor can be made thin.
- the multilayer coil 1 may be configured as a large planar substrate, and the electric signal control unit may be configured as a multilayer coil substrate.
- FIG. 13 shows another example of the brushless motor of the present invention.
- This brushless motor has a first rotor 101a in which an annular magnet 100 having alternating north and south poles is fixed to a yoke 105a as shown in FIG. 12, and an annular magnet 100b having a polarity opposite to that of the annular magnet 100a.
- This brushless motor uses three drive power supplies.
- the laminated coil 1 used in the present embodiment is formed on a large planar substrate, and a circuit pattern such as an electric signal control unit for periodically supplying a drive current is formed integrally.
- the other configuration is almost the same as that of the first embodiment, and the description is omitted.
- a stator having a plurality of common poles is disposed substantially at the center of the first and second rotors 101a and 101b.
- Each coil pole is set so as to repel a force for attracting the annular magnets 100a, 100b of the first and second rotors 101a, 101b. Therefore, the first and second rotors 101a and 101b receive the same amount of suction or repulsion in the opposite direction by the stator 125.
- the vibration in the rotation axis direction can be suppressed as compared with the single rotor type brushless motor.
- the gap between the first rotor 101a and the stator 125 and the gap between the second rotor 101b and the stator 125 can be made the same to make the stator 125 thinner. Therefore, a thin motor with less vibration can be obtained.
- the laminated coil of the present invention has high efficiency, is small and thin, has no problems such as rotation unevenness and torque ripple, and is rich in mass productivity. Further, the brushless motor of the present invention using such a laminated coil is thin and has little vibration.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/523,822 US7291956B2 (en) | 2002-08-07 | 2003-08-07 | Laminate coil and brushless motor using same |
EP03784576A EP1542337A4 (en) | 2002-08-07 | 2003-08-07 | LAMINATED COIL AND BRUSHLESS MOTOR USING THE SAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002229522 | 2002-08-07 | ||
JP2002-229522 | 2002-08-07 |
Publications (1)
Publication Number | Publication Date |
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WO2004015843A1 true WO2004015843A1 (ja) | 2004-02-19 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/010069 WO2004015843A1 (ja) | 2002-08-07 | 2003-08-07 | 積層コイル及びこれを用いたブラシレスモータ |
Country Status (4)
Country | Link |
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US (1) | US7291956B2 (ja) |
EP (1) | EP1542337A4 (ja) |
CN (1) | CN100541977C (ja) |
WO (1) | WO2004015843A1 (ja) |
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CN104734389A (zh) * | 2013-12-20 | 2015-06-24 | 湖北海山科技有限公司上海分公司 | 定子盘及轴向磁通永磁动能装置 |
US10170953B2 (en) | 2015-10-02 | 2019-01-01 | E-Circuit Motors, Inc. | Planar composite structures and assemblies for axial flux motors and generators |
WO2019013968A1 (en) * | 2017-07-10 | 2019-01-17 | E-Circuit Motors, Inc. | IMPROVED FLAT COMPOSITE STRUCTURES AND ASSEMBLIES FOR AXIAL FLUX MOTORS AND GENERATORS |
US11336130B1 (en) | 2021-08-17 | 2022-05-17 | E-Circuit Motors, Inc. | Low-loss planar winding configurations for an axial flux machine |
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Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61247255A (ja) * | 1985-04-23 | 1986-11-04 | Murata Mfg Co Ltd | モ−タ用コイル |
JPS61269632A (ja) * | 1985-05-23 | 1986-11-29 | Sony Corp | プリントコイルを用いたモ−タ |
JPS61273142A (ja) * | 1985-05-29 | 1986-12-03 | Fanuc Ltd | 同期電動機用デイスク状ステ−タ |
JPS6459902A (en) * | 1987-08-31 | 1989-03-07 | Nec Corp | Laminated coil |
JP2003123413A (ja) * | 2001-10-05 | 2003-04-25 | Sony Corp | ヘッドアクチュエータおよび磁気記録再生装置 |
JP2003174749A (ja) * | 2001-12-06 | 2003-06-20 | Matsushita Electric Ind Co Ltd | 積層セラミックコイルおよびこれを用いたモータ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3211002A1 (de) | 1982-03-25 | 1983-10-06 | Dynamit Nobel Ag | Verfahren zur herstellung von dibenzyl-2-carbonsaeuren und in 3-stellung substituierten phthaliden sowie dabei anfallende neu benzylderivate |
JPS59191444A (ja) * | 1983-04-15 | 1984-10-30 | Hitachi Ltd | 固定子コイル |
US5440185A (en) * | 1991-10-28 | 1995-08-08 | Allwine, Jr.; Elmer C. | Composite magnet brushless DC motor |
JPH05336712A (ja) * | 1992-05-28 | 1993-12-17 | Sumitomo Heavy Ind Ltd | モータ用積層コイル、その製造方法、及びこれを用いたモータ |
-
2003
- 2003-08-07 CN CN03818685.3A patent/CN100541977C/zh not_active Expired - Fee Related
- 2003-08-07 US US10/523,822 patent/US7291956B2/en not_active Expired - Fee Related
- 2003-08-07 WO PCT/JP2003/010069 patent/WO2004015843A1/ja active Application Filing
- 2003-08-07 EP EP03784576A patent/EP1542337A4/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61247255A (ja) * | 1985-04-23 | 1986-11-04 | Murata Mfg Co Ltd | モ−タ用コイル |
JPS61269632A (ja) * | 1985-05-23 | 1986-11-29 | Sony Corp | プリントコイルを用いたモ−タ |
JPS61273142A (ja) * | 1985-05-29 | 1986-12-03 | Fanuc Ltd | 同期電動機用デイスク状ステ−タ |
JPS6459902A (en) * | 1987-08-31 | 1989-03-07 | Nec Corp | Laminated coil |
JP2003123413A (ja) * | 2001-10-05 | 2003-04-25 | Sony Corp | ヘッドアクチュエータおよび磁気記録再生装置 |
JP2003174749A (ja) * | 2001-12-06 | 2003-06-20 | Matsushita Electric Ind Co Ltd | 積層セラミックコイルおよびこれを用いたモータ |
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CN104734389A (zh) * | 2013-12-20 | 2015-06-24 | 湖北海山科技有限公司上海分公司 | 定子盘及轴向磁通永磁动能装置 |
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US10211694B1 (en) | 2015-10-02 | 2019-02-19 | E-Circuit Motors, Inc. | Structures and methods for thermal management in printed circuit board stators |
US10256690B2 (en) | 2015-10-02 | 2019-04-09 | E-Circuit Motors, Inc. | Structures and methods for controlling losses in printed circuit boards |
US11527933B2 (en) | 2015-10-02 | 2022-12-13 | E-Circuit Motors, Inc. | Stator and rotor design for periodic torque requirements |
US11831211B2 (en) | 2017-06-05 | 2023-11-28 | E-Circuit Motors, Inc. | Stator and rotor design for periodic torque requirements |
WO2019013968A1 (en) * | 2017-07-10 | 2019-01-17 | E-Circuit Motors, Inc. | IMPROVED FLAT COMPOSITE STRUCTURES AND ASSEMBLIES FOR AXIAL FLUX MOTORS AND GENERATORS |
TWI786130B (zh) * | 2017-07-10 | 2022-12-11 | 美商E電路馬達股份有限公司 | 用於軸向磁通電動機及發電機之改良平面複合結構 |
US11751330B2 (en) | 2021-07-30 | 2023-09-05 | E-Circuit Motors, Inc. | Magnetic material filled printed circuit boards and printed circuit board stators |
US11336130B1 (en) | 2021-08-17 | 2022-05-17 | E-Circuit Motors, Inc. | Low-loss planar winding configurations for an axial flux machine |
Also Published As
Publication number | Publication date |
---|---|
US7291956B2 (en) | 2007-11-06 |
CN1675815A (zh) | 2005-09-28 |
CN100541977C (zh) | 2009-09-16 |
EP1542337A4 (en) | 2009-01-07 |
US20050285470A1 (en) | 2005-12-29 |
EP1542337A1 (en) | 2005-06-15 |
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