WO2019102761A1 - Moteur linéaire tubulaire - Google Patents

Moteur linéaire tubulaire Download PDF

Info

Publication number
WO2019102761A1
WO2019102761A1 PCT/JP2018/039159 JP2018039159W WO2019102761A1 WO 2019102761 A1 WO2019102761 A1 WO 2019102761A1 JP 2018039159 W JP2018039159 W JP 2018039159W WO 2019102761 A1 WO2019102761 A1 WO 2019102761A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
peripheral end
linear motor
core
cylindrical linear
Prior art date
Application number
PCT/JP2018/039159
Other languages
English (en)
Japanese (ja)
Inventor
善明 加納
佐藤　浩介
眞一郎 袴田
大智 芝原
Original Assignee
Ｋｙｂ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018197259A external-priority patent/JP7240569B2/ja
Application filed by Ｋｙｂ株式会社 filed Critical Ｋｙｂ株式会社
Priority to US16/620,972 priority Critical patent/US11456654B2/en
Priority to EP18881194.7A priority patent/EP3637600B1/fr
Publication of WO2019102761A1 publication Critical patent/WO2019102761A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors

Definitions

  • the present invention relates to a cylindrical linear motor.
  • a cylindrical linear motor is mounted in a slot between a core and a tooth provided with a plurality of teeth axially arranged on the outer periphery of the cylindrical yoke and the yoke.
  • a mover consisting of a plurality of permanent magnets attached to each of the two (see, for example, Patent Document 1).
  • the teeth are provided on the outer periphery of the yoke, and the axial width of the teeth is equal from the inner periphery to the outer periphery. Since the core has a cylindrical shape, the cross-sectional area of the tooth T is the inner circumference of the tooth T, as shown in FIG. A minimum area Si is obtained at an end (a surface obtained by cutting the boundary between the teeth and the yoke at the outer peripheral edge of the yoke) ti.
  • the cross-sectional area is proportional to the diameter, so the largest area So at the outer peripheral end to becomes the area So gradually going from the outer peripheral end to the inner peripheral side And the smallest area Si at the inner circumferential end ti.
  • the magnetic path cross-sectional area of the tooth T is also maximum at the outer peripheral end to of the tooth T and is minimum at the inner peripheral end ti of the tooth T.
  • the magnetic path cross-sectional area at the inner peripheral end ti of the tooth T is small, so that the magnetic flux is saturated at the inner peripheral end ti. It was difficult to get the thrust.
  • this invention aims at provision of the cylindrical linear motor which can suppress magnetic saturation and can improve thrust.
  • a cylindrical linear motor comprises a core having a cylindrical yoke, a plurality of annular annular teeth axially spaced on the outer periphery of the yoke, and teeth. And a magnetic field in which the core is inserted axially movably in the axial direction and the N pole and the S pole are alternately arranged in the axial direction.
  • the axial width of the inner peripheral end of the teeth on the yoke side is larger than the axial width of the outer peripheral end of the teeth.
  • FIG. 1 is a longitudinal sectional view of a cylindrical linear motor according to a first embodiment.
  • FIG. 2 is a longitudinal sectional view of the teeth portion of the cylindrical linear motor according to the first embodiment.
  • FIG. 3 is a view for explaining the difference between the area of the inner peripheral end of the teeth of the cylindrical linear motor of the first embodiment and the area of the teeth and the inner peripheral end of the conventional cylindrical linear motor.
  • FIG. 4 is a view showing the relationship between the mass thrust density of the cylindrical linear motor of the first embodiment and the internal angle formed by the inclined surface of the teeth and the orthogonal surface orthogonal to the axis of the core.
  • FIG. 5 is a longitudinal sectional view of a tooth portion of a cylindrical linear motor according to a modification of the first embodiment.
  • FIG. 6 is a longitudinal sectional view of a cylindrical linear motor according to a second embodiment.
  • FIG. 7 is a longitudinal sectional view of the teeth portion of the cylindrical linear motor according to the second embodiment.
  • FIG. 8 is a longitudinal sectional view of a tooth portion of a cylindrical linear motor according to a modification of the second embodiment.
  • FIG. 9 is a view for explaining the volume of the slot of the cylindrical linear motor in the modification of the second embodiment.
  • FIG. 10 is a view for explaining the areas of the inner peripheral end and the outer peripheral end of the teeth of the conventional cylindrical linear motor.
  • the cylindrical linear motor M1 has a core 2 having a cylindrical yoke 3 and a plurality of annular teeth 4 provided on the outer periphery of the yoke 3, teeth 4, It comprises a winding 5 mounted between 4 and a magnetic field 7 which is cylindrical and in which the core 2 is inserted movably in the axial direction.
  • the core 2 is configured to include a cylindrical yoke 3 and a plurality of annular annular teeth 4 axially spaced from each other on the outer periphery of the yoke 3. It is done.
  • the yoke 3 is cylindrical as described above, and the cross-sectional area of the yoke 3 is a cylinder centering on the axis A of the core 2 (see FIG. 2) and the teeth 4 can be cut anywhere from the inner circumference to the outer circumference of the teeth 4.
  • the wall thickness is secured so as to be equal to or larger than the area of the cross section which can be obtained by cutting with the above-mentioned cylinder.
  • each tooth 4 is annular and has an inner peripheral end 4 b having an axial width Wi larger than the axial width Wo of the outer peripheral end 4 a of the tooth 4. That is, the axial width Wi of the inner peripheral end 4 b of the tooth 4 is larger than the axial width Wo of the outer peripheral end 4 a of the tooth 4.
  • the side surfaces 4 c and 4 d on both sides in the axial direction of the teeth 4 are provided with inclined surfaces I connected to the outer peripheral end 4 a.
  • inside angle theta which slope I makes with orthogonal plane O which intersects perpendicularly with axis A of core 2 is the range of 6 degrees-12 degrees Is set to the following angle.
  • the cross-sectional shape obtained by cutting the teeth 4 at a plane including the axis A of the core 2 is as shown in FIG.
  • it has a shape of line symmetry with the line L orthogonal to the axis line A of the core 2 as the axis of symmetry.
  • a line connecting the center in the axial direction of the outer peripheral end 4a of the tooth 4 and the center in the axial direction of the inner peripheral end 4b of the tooth 4 coincides with a line L orthogonal to the axis A of the core 2,
  • the outer peripheral end 4a, the inner peripheral end 4b, and the side surfaces 4c, 4d are formed in line symmetry with the line L as an axis of symmetry.
  • a total of nine slots 6 formed of air gaps are provided between the teeth 4 4 adjacent to each other in FIG. 1.
  • the winding 5 is wound and mounted in the slot 6.
  • the winding 5 is equipped with a winding 5 of W phase, W phase, W phase and V phase, V phase, V phase, V phase and U phase, U phase, U phase, U phase and W phase.
  • the core 2 comprised in this way is mounted
  • the core 2 is fixed to the rod 11 by being held by annular stoppers 12 and 13 whose right and left ends are fixed to the rod 11 in FIG.
  • the field 7 is an outer tube 8 formed of a cylindrical nonmagnetic material, and an inner tube 9 formed of a cylindrical nonmagnetic material inserted in the outer tube 8.
  • a plurality of permanent magnets 10 axially stacked and inserted in the entire annular gap between the outer tube 8 and the inner tube 9 are configured.
  • the core 2 is axially movably inserted into the field 7.
  • the permanent magnet 10 is magnetized so that the S pole and the N pole alternately appear in the axial direction with respect to the core 2 inserted on the inner circumferential side. Therefore, in the field 7, the S pole and the N pole are alternately arranged in the axial direction on the inner peripheral side, and the magnetic field is applied to the core 2.
  • the permanent magnet 10 may not be provided in a range in which it can not face the core 2.
  • the left end of the outer tube 8 and the inner tube 9 in FIG. 1 is closed by the cap 14, and the right end of the outer tube 8 and the inner tube 9 in FIG. 1 moves the rod 11 inserted in the inner periphery in the axial direction. It is closed by a guiding annular rod guide 15. Further, the stoppers 12 and 13 are in sliding contact with the inner periphery of the inner tube 9, and the core 2 can be smoothly moved in the axial direction with the rod 11 without axial displacement with respect to the field 7 by the stoppers 12 and 13. It is supposed to be.
  • the inner tube 9 forms a gap between the outer periphery of the core 2 and the outer periphery of the permanent magnet 10 and plays a role of guiding the axial movement of the core 2 in cooperation with the stoppers 12 and 13.
  • the cap 14 is provided with a connector 14a for connecting the cable C connected to the winding 5 to an external power supply (not shown) so that the coil 5 can be energized from the external power supply. Further, the axial length of the outer tube 8 and the inner tube 9 is longer than the axial length of the core 2, and the core 2 can be stroked to the left and right in FIG. 1 within the axial length range in the field 7.
  • cylindrical linear motor M1 is obtained. And the moving direction of the core 2 can be controlled.
  • the above-mentioned control method is an example, and is not restricted to this.
  • the core 2 is an armature and a mover, and the field 7 behaves as a stator.
  • the cylindrical linear motor M1 of the present invention includes the core 2 having the cylindrical yoke 3 and the plurality of teeth 4 which are annular and are provided on the outer periphery of the yoke 3 at intervals in the axial direction. , And the core 2 is inserted axially movably in the axial direction so that the N pole and the S pole alternate alternately in the axial direction.
  • the magnetic field 7 is disposed, and the axial width Wi of the inner peripheral end 4 b on the yoke side of the tooth 4 is larger than the axial width Wo of the outer peripheral end 4 a of the tooth 4.
  • the area of the end 4b (the portion hatched by solid lines) Ai is larger than the area Si (the portion hatched by broken lines) of the inner peripheral end of the teeth T in the conventional cylindrical linear motor.
  • the cylindrical linear motor M1 of the present invention can secure a large magnetic path cross-sectional area as compared with the conventional cylindrical linear motor, and can suppress magnetic saturation when the winding 5 is energized.
  • the thrust can be improved because As mentioned above, according to the cylindrical linear motor M1 of this invention, magnetic saturation can be suppressed and a thrust can be improved.
  • the side surfaces 4c and 4d in the cross section obtained by cutting the teeth 4 along the plane including the axis A of the core 2 connect the end of the outer peripheral end 4a and the end of the inner peripheral end 4b with a straight line there were.
  • the axial width Wi of the inner peripheral end 4b of the tooth 4 is made larger than the axial width Wo of the outer peripheral end 4a of the tooth 4, the magnetic saturation can be suppressed and the thrust of the cylindrical linear motor M1 can be improved.
  • the shapes of the side surfaces 4c and 4d in the cross section obtained by cutting the teeth 4 along the plane including the axis A of the core 2 may be arc shapes or parabolic shapes.
  • the axial direction width of the teeth 4 may be shaped so as to gradually increase in the middle.
  • the magnetic path cross-sectional area is made the conventional cylindrical linear motor More secure. Since the axial width of the teeth T in the conventional cylindrical linear motor is constant in the radial direction, the area Si of the inner peripheral end of the teeth T is the outer peripheral end 4a of the teeth 4 in the cylindrical linear motor M1 of this embodiment. Is equal to the area obtained by multiplying the axial width Wo of the inner circumferential end 4b of the tooth 4 by the circumferential length .pi..times..phi.i.
  • the cylindrical linear motor M1 has a cylindrical yoke 3 and a core 2 having a plurality of annular teeth 4 axially spaced from each other on the outer periphery of the yoke 3 and the teeth 4 and 5
  • the winding 5 is mounted in the slot 6 of the above, and the field 7 is cylindrical and the core 2 is inserted axially movably in the axial direction and the N pole and the S pole are alternately arranged in the axial direction.
  • the area Ai of the inner peripheral end 4b of the tooth 4 is larger than the area obtained by multiplying the axial length Wo of the outer peripheral end 4a of the tooth 4 by the peripheral length ⁇ ⁇ ⁇ i of the inner peripheral end 4b of the tooth 4 It is also good.
  • the magnetic path cross-sectional area can be secured to be larger than that of the conventional cylindrical linear motor, so that magnetic saturation when the winding 5 is energized can be suppressed and a large magnetic field is generated. Thrust is improved because it can. Therefore, according to the cylindrical linear motor M1 configured as described above, the magnetic saturation can be suppressed and the thrust can be improved.
  • the area Ai of the inner peripheral end 4b of the tooth 4 may be larger than the area obtained by multiplying the axial width Wo of the outer peripheral end 4a of the tooth 4 by the peripheral length ⁇ ⁇ ⁇ i of the inner peripheral end 4b of the tooth 4.
  • the shape of 4 can also be changed arbitrarily.
  • the inclined surfaces I are provided on the side surfaces 4c and 4d on both sides in the axial direction of the teeth 4, and the orthogonal surface O orthogonal to the inclined surface I and the axis A of the core 2 is provided. Is an angle in the range of 6 degrees to 12 degrees.
  • the outer diameter of the outer tube 8 in the cylindrical linear motor M1 of this embodiment is between 60 mm and 100 mm, and the outer diameter of the core 2 is from 50 mm to 83 mm.
  • the mass thrust density when the internal angle ⁇ formed by the inclined surface I and the orthogonal surface O in the side surfaces 4c and 4d in the cross section of the tooth 4 is changed is as shown in FIG.
  • the mass thrust density is a numerical value obtained by dividing the maximum thrust of the cylindrical linear motor M1 having the above-described configuration by the mass. Then, when the internal angle ⁇ formed by the inclined surface I and the orthogonal surface O in the side surfaces 4c and 4d in the cross section of the tooth 4 in the cross section of the tooth 4 is in the range of 6 degrees to 12 degrees, good mass thrust density can be obtained I understand.
  • the internal angle ⁇ formed by the inclined surface I provided on the side surfaces 4c and 4d on both sides in the axial direction of the tooth 4 and the orthogonal plane O orthogonal to the axis A of the core 2 is an angle in the range of 6 degrees to 12 degrees. Since the thrust per mass of the cylindrical linear motor M1 is increased, the cylindrical linear motor M1 can be realized which is compact and can obtain a large thrust. In other words, it is possible to realize the cylindrical linear motor M1 suitable for an aircraft or a vehicle where there is a demand for a lightweight cylindrical linear motor without ample mounting space.
  • the entire side surfaces 4c and 4d on both sides in the axial direction of the teeth 4 are the inclined surfaces I. However, as shown in FIG.
  • the area of the inner peripheral end 4 b of the tooth 4 may be equal to or larger than the area of the outer peripheral end 4 a of the tooth 4.
  • the axial width of the inner circumferential end 4b of the tooth 4 is Wo
  • the axial width of the outer circumferential end 4a of the tooth 4 is Wi
  • the outer diameter of the tooth 4 is ⁇ o
  • the inner diameter of the tooth 4 is It is assumed that ⁇ i.
  • the dimensions of the inner and outer diameters ⁇ i, ⁇ o of the teeth 4 and the axial widths Wi, Wo of the inner peripheral end 4b and the outer peripheral end 4a are set so as to satisfy ⁇ o ⁇ Wo ⁇ ⁇ i ⁇ Wi
  • the area of the inner peripheral end 4 b can be made equal to or larger than the area of the outer peripheral end 4 a of the tooth 4.
  • the magnetic path cross-sectional area of the inner peripheral end 4b of the teeth 4 is the narrowest and can be prevented from becoming a bottleneck and causing magnetic saturation, which is more effective. Improve the thrust.
  • the magnetic path cross-sectional area in the middle of the tooth 4 can be a bottleneck. That is, the cross-sectional area obtained by cutting an arbitrary position from the outer peripheral end 4a to the inner peripheral end 4b of the tooth 4 by a cylinder having an arbitrary diameter centering on the axis A of the core 2 becomes the area Ao of the outer peripheral end 4a or more
  • the magnetic path cross-sectional area does not decrease in the middle of the teeth 4, so that the thrust can be effectively improved.
  • the cross section obtained by cutting the teeth 4 other than the teeth 4 at the end of the core 2 along the plane including the axis A of the core 2 is orthogonal to the axis A of the core 2
  • the line L passing through the center in the axial direction of 4 is axisymmetrically shaped with the axis of symmetry as an axis of symmetry.
  • the core 2 is directed to either the left or the right in FIG. Even if the thrust is exerted, the current amount of the winding 5 becomes equal if the thrust is the same.
  • the cylindrical linear motor M1 configured as described above, a difference in polarity does not occur in the amount of energization to the winding 5 depending on the driving direction of the cylindrical linear motor M1, so that drive control becomes easy.
  • the amount of energization to winding 5 to have a polarity difference depending on the drive direction, such as when the thrust generation direction of cylindrical linear motor M1 is one direction, the shape of teeth 4 The shape does not have to be axially symmetrical about the center of the direction.
  • a cross section obtained by cutting the teeth 4 along a plane including the axis A of the core 2 is formed in line symmetry with the line L orthogonal to the axis A of the core 2 as a symmetry axis, and the side surfaces 4c on both sides in the axial direction of the teeth 4,
  • the inclined surface I is provided in 4d
  • the cross-sectional area produced when cutting the teeth 4 with a cylinder of an arbitrary diameter centered on the axis line A of the core 2 can be made equal to or larger than the area Ao of the outer peripheral end 4 a of the teeth 4. That is, when the inclined surfaces I are provided on the side surfaces 4c and 4d on both axial sides of the teeth 4, the axial width Wo of the outer peripheral end 4a of the teeth 4, the internal angle ⁇ formed by the inclined surfaces I and the orthogonal plane O, the outside of the core 2
  • the core 2 can be formed by simple processing. In particular, when manufacturing the core 2 by cutting, processing becomes easy.
  • the cylindrical linear motor M2 in the second embodiment is provided on the outer periphery of the cylindrical yoke 3 and the yoke 3 in the same manner as the cylindrical linear motor 1 of the first embodiment as shown in FIG.
  • the cylindrical linear motor M2 of the second embodiment differs from the cylindrical linear motor 1 of the first embodiment in the shape of the teeth 41 in the core 21.
  • the teeth 41 in the cylindrical linear motor M2 according to the second embodiment are annular as shown in FIGS. 6 and 7, and have an axial width Wi1 larger than the axial width Wo1 of the outer peripheral end 41a. It has a circumferential end 41b.
  • the axial direction width is constant in the range D of the depth on the way from the outer peripheral end 41a to the inner peripheral end 41b, and the axial direction in the range E of the inner peripheral end 41b of the deepest part from the depth in the middle The width increases toward the inner peripheral end 41b.
  • the range D in the side surfaces 41 c and 41 d on both sides in the axial direction of the teeth 41 is a plane orthogonal to the axis A 1 of the core 21.
  • a range E of the side surfaces 41c and 41d on both sides is an inclined surface I1 that is inclined with respect to a plane orthogonal to the axis of the core 21.
  • the internal angle ⁇ 1 formed by the inclined plane I1 with the orthogonal plane O1 orthogonal to the axis A1 of the core 21 is in the range of 6 to 12 degrees. Is set to the following angle.
  • the radial length in the range D of the teeth 41 is shorter than the radial length in the range E of the teeth 41, and the magnetic path cross sectional area at the inner peripheral end 41 b of the teeth 41 is large. It is considered to be secured.
  • the cross-sectional shape obtained by cutting the teeth 41 at a plane including the axis A1 of the core 21 is as shown in FIG.
  • it has a line symmetrical shape with the line L1 orthogonal to the axis line A1 of the core 21 as the axis of symmetry.
  • a line connecting the center in the axial direction of the outer peripheral end 41a of the tooth 41 and the center in the axial direction of the inner peripheral end 41b of the tooth 41 coincides with the line L1 orthogonal to the axis A1 of the core 21;
  • the outer peripheral end 41a, the inner peripheral end 41b, and the side surfaces 41c and 41d have a line symmetrical shape with the line L1 as an axis of symmetry.
  • the cylindrical linear motor M2 of the second embodiment also has a gap between the teeth 41, 41 adjacent to each other in FIG. A total of nine slots 61 are provided, and the winding 5 is wound and mounted in the slot 61.
  • the cylindrical linear motor M2 of the second embodiment has W slots, 61 W phases, W phases in order from the left in FIG. And V-phase, V-phase, V-phase, V-phase and U-phase, U-phase, U-phase, U-phase and W-phase windings 5 are mounted.
  • the cylindrical linear motor M2 of the present invention includes the core 21 having the cylindrical yoke 3 and a plurality of teeth 41 which are annular and are provided on the outer periphery of the yoke 3 at intervals in the axial direction.
  • the core 2 is axially movably inserted in the axial direction so that the N pole and the S pole alternate alternately in the axial direction.
  • the axial direction width Wi1 of the inner peripheral end 41b on the yoke side of the tooth 4 is larger than the axial direction width Wo1 of the outer peripheral end 41a of the tooth 41.
  • the cylindrical linear motor M2 of the present embodiment can secure a large magnetic path cross-sectional area as compared with the conventional cylindrical linear motor, like the cylindrical linear motor 1 of the first embodiment, Since magnetic saturation when the wire 5 is energized can be suppressed, a larger magnetic field can be generated, and thus the thrust is improved. As described above, according to the cylindrical linear motor M2 of the present invention, the magnetic saturation can be suppressed to improve the thrust.
  • the axial width of the teeth 41 of the present embodiment is constant, and the depth of the inner peripheral end 41b of the deepest portion is In the range E, the axial width becomes larger toward the inner peripheral end 41b.
  • interval between the teeth 41 and 41 in the outer peripheral end 41a side of the teeth 41 becomes wide. That is, the width of the slot 61 on the outer peripheral end 41 a side of the tooth 41 is increased, and the number of electric wires of the winding 5 between the range D of the tooth 41 and the range D of the adjacent tooth 41 is increased.
  • the winding 5 disposed on the outer peripheral end 41 a side between the teeth 41 and 41 is opposed to the field 7 at a position closest to the field 7, and the number of electric wires of the winding 5 in this part is
  • the thrust generated by the mold linear motor M2 is greatly affected, and the thrust tends to increase as the number of wires of the winding 5 increases. Therefore, as in the present embodiment, the axial width is constant in the depth range D on the way from the outer peripheral end 41 a to the inner peripheral end 41 b as in the present embodiment, and the depth from the middle to the innermost end is constant.
  • the number of wires of the winding 5 disposed in the vicinity of the field 7 can be increased while securing the magnetic path cross sectional area. Therefore, according to the cylindrical linear motor M2 of the present embodiment, the number of electric wires of the winding 5 disposed in the vicinity of the field 7 can be increased while securing the magnetic path cross sectional area, so the mass of the cylindrical linear motor M2 Thrust density can be improved. Moreover, if it is a shape as mentioned above, processing of the teeth 41 is also easy.
  • the outer diameter of the outer tube 8 in the cylindrical linear motor M2 of this embodiment is between 60 mm and 100 mm, and the outer diameter of the core 21 is from 50 mm to 83 mm. If the internal angle ⁇ 1 formed by the inclined surface I1 of the teeth 41 and the orthogonal surface O is set to about 10 degrees, securing of the magnetic path cross-sectional area of the teeth 41 and the winding disposed in the vicinity of the field 7 It can be compatible with securing the number of wires of the wire 5 in a well-balanced manner, which is advantageous from the viewpoint of improvement of mass thrust density.
  • the magnetic path cross-sectional area can be secured compared to the conventional cylindrical linear motor. If the area of the inner peripheral end 41b of the tooth 41 is larger than the area obtained by multiplying the axial length Wo1 of the outer peripheral end 41a of the tooth 41 by the peripheral length ⁇ ⁇ ⁇ i of the inner peripheral end 41b of the tooth 41, the magnetic path sectional area can be secured. .
  • the area of the inner peripheral end 41 b of the tooth 41 may be larger than the area obtained by multiplying the axial length Wo 1 of the outer peripheral end 41 a of the tooth 41 by the peripheral length ⁇ ⁇ ⁇ i of the inner peripheral end 41 b.
  • the area of the inner peripheral end 41 b of the tooth 41 may be larger than the area obtained by multiplying the axial length Wo 1 of the outer peripheral end 41 a of the tooth 41 by the peripheral length ⁇ ⁇ ⁇ i of the inner peripheral end 41 b of the tooth 41.
  • the axial width is constant in the range D of the depth on the way from the outer peripheral end 41a to the inner peripheral end 41b, and in the range E of the inner peripheral end 41b from the depth in the middle to the inner peripheral end 41b. If the condition that the shape becomes larger toward the inner peripheral end 41b is satisfied, any change is possible.
  • the radial length in the range D of the teeth 41 is shorter than the radial length in the range E of the teeth 41, and the teeth 41 have teeth whose width in the range D is constant.
  • a large magnetic path cross-sectional area at the inner peripheral end 41b of 41 can be secured. Therefore, according to the cylindrical linear motor M2 of the present embodiment, the number of electric wires of the winding 5 arranged in the vicinity of the field 7 can be increased while securing a large magnetic path sectional area, so the cylindrical linear motor M2 Mass thrust density can be further improved.
  • the teeth 41 have an inclined surface I1 in the range E of the inner peripheral end 41b from the middle of the side surfaces 41c and 41d on both axial sides, and the inclined surface I1 and the core
  • the inner angles ⁇ 2 and ⁇ 3 formed by the orthogonal plane O1 orthogonal to the axis line A1 of 21 may be configured to gradually increase in the direction from the middle toward the inner peripheral end 41b.
  • the inclined surface I1 has a shape in which the inclination angle changes midway, and the inner angle ⁇ 3 on the inner peripheral side of the inclined surface I1 is larger than the inner angle ⁇ 2 on the outer peripheral side of the inclined surface I1. ing.
  • the inner angle ⁇ 2 is set to 10 degrees
  • the inner angle ⁇ 3 is set to 30 degrees.
  • the cross-sectional area of the hatched portion in the figure is increased compared to the tooth 41 in which the angle of the inclined surface I1 shown by the broken line in the figure is constant. Can increase the number of wires of the winding 5 per slot.
  • the teeth have an inclined surface I1 in the range E of the inner peripheral end 41b from the middle of the side surfaces 41c and 41d on both axial sides, and the inclined surface I1 and the axis A1 of the core 21
  • the interior angles ⁇ 2 and ⁇ 3 formed by the orthogonal plane O1 orthogonal to the axis gradually increase in the direction from the middle toward the inner peripheral end 41b, the magnetic path cross-sectional area of the teeth 41 is secured. Since the number of wires of the winding 5 per slot 6 can be increased, the mass thrust density of the cylindrical linear motor M2 can be further improved.
  • the cross section obtained by cutting the teeth 41 other than the teeth 41 at the end of the core 21 by the plane including the axis A1 of the core 21 is orthogonal to the axis A1 of the core 21 And the line L1 passing through the axial center of the teeth 41 as a symmetry axis.
  • the core 21 exerts thrust in either the left or right direction with respect to the field 7 Even if this is done, if the thrust is the same, the amount of current in the winding 5 will be equal.
  • the cylindrical linear motor M2 configured as described above, no difference in polarity occurs in the amount of energization to the winding 5 depending on the driving direction of the cylindrical linear motor M2, and thus, the drive control becomes easy.
  • the thrust generation direction of the cylindrical linear motor M2 is one direction or the like, if it is acceptable for the amount of energization to the winding 5 to cause a polarity difference depending on the drive direction, the shape of the teeth 41 The shape does not have to be axially symmetrical about the center of the direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)

Abstract

Pour atteindre ce but, un moteur linéaire tubulaire (1) selon la présente invention comporte : une culasse tubulaire (3); un noyau annulaire (2) ayant une pluralité de dents (4) disposées à intervalles dans une direction axiale sur la périphérie externe de la culasse (3); un enroulement (5) monté dans une fente (6) entre les dents (4), (4); et un aimant à champ tubulaire (7) dans lequel le noyau (2) est inséré de façon mobile dans la direction axiale et dans lequel les pôles N et les pôles S sont disposés en alternance dans la direction axiale. Les dents (4) ont une extrémité périphérique interne côté culasse (4b) dont une largeur de direction axiale Wi est supérieure à une largeur de direction axiale (Wo) d'une extrémité périphérique externe (4a) des dents (4).
PCT/JP2018/039159 2017-11-24 2018-10-22 Moteur linéaire tubulaire WO2019102761A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/620,972 US11456654B2 (en) 2017-11-24 2018-10-22 Tubular linear motor
EP18881194.7A EP3637600B1 (fr) 2017-11-24 2018-10-22 Moteur linéaire tubulaire

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017225405 2017-11-24
JP2017-225405 2017-11-24
JP2018-197259 2018-10-19
JP2018197259A JP7240569B2 (ja) 2017-11-24 2018-10-19 筒型リニアモータ

Publications (1)

Publication Number Publication Date
WO2019102761A1 true WO2019102761A1 (fr) 2019-05-31

Family

ID=66630584

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/039159 WO2019102761A1 (fr) 2017-11-24 2018-10-22 Moteur linéaire tubulaire

Country Status (1)

Country Link
WO (1) WO2019102761A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020198731A (ja) * 2019-06-04 2020-12-10 Ｋｙｂ株式会社 筒型リニアモータ
CN117895673A (zh) * 2023-12-29 2024-04-16 比亚迪股份有限公司 电机的磁芯总成和电机、悬架系统、车辆

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008253130A (ja) 2007-03-08 2008-10-16 Sanyo Denki Co Ltd リニアモータ
JP2013021787A (ja) * 2011-07-08 2013-01-31 Okuma Corp 同期電動機の制御装置
JP2017093072A (ja) * 2015-11-05 2017-05-25 トヨタ自動車株式会社 回転電機ステータ
JP2017225405A (ja) 2016-06-23 2017-12-28 井関農機株式会社 コンバイン
JP2018197259A (ja) 2011-12-02 2018-12-13 フェイト セラピューティクス，インコーポレイテッド 虚血を処置する改善された方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008253130A (ja) 2007-03-08 2008-10-16 Sanyo Denki Co Ltd リニアモータ
JP2013021787A (ja) * 2011-07-08 2013-01-31 Okuma Corp 同期電動機の制御装置
JP2018197259A (ja) 2011-12-02 2018-12-13 フェイト セラピューティクス，インコーポレイテッド 虚血を処置する改善された方法
JP2017093072A (ja) * 2015-11-05 2017-05-25 トヨタ自動車株式会社 回転電機ステータ
JP2017225405A (ja) 2016-06-23 2017-12-28 井関農機株式会社 コンバイン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3637600A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020198731A (ja) * 2019-06-04 2020-12-10 Ｋｙｂ株式会社 筒型リニアモータ
JP7252834B2 (ja) 2019-06-04 2023-04-05 Ｋｙｂ株式会社 筒型リニアモータ
CN117895673A (zh) * 2023-12-29 2024-04-16 比亚迪股份有限公司 电机的磁芯总成和电机、悬架系统、车辆

Similar Documents

Publication Publication Date Title
US9559555B2 (en) Rotor and motor
JP7079444B2 (ja) 筒型リニアモータ
CN107534325B (zh) 具有环形绕组的开关磁阻电机
WO2019102761A1 (fr) Moteur linéaire tubulaire
WO2020079869A1 (fr) Moteur linéaire cylindrique
JP2003169459A (ja) ステッピングモーター
JP2005224054A (ja) アキシャルギャップ型電動機
EP3098942B1 (fr) Rotor
JP7240569B2 (ja) 筒型リニアモータ
JP2019187226A (ja) 筒型リニアモータ
JP2022007249A (ja) 筒型リニアモータ
JP2022012372A (ja) 筒型リニアモータ
JP7036317B2 (ja) 筒型リニアモータ
US11245321B2 (en) Cylindrical linear motor
JP7228179B2 (ja) 筒型リニアモータ
KR102065267B1 (ko) 3d 프린팅을 이용하여 제조된 코어리스 전동기용 고정자 및 이를 포함하는 코어리스 전동기
JP7186956B2 (ja) 筒型リニアモータおよび円環状磁石の製造方法
JP6990143B2 (ja) 筒型リニアモータ
WO2023228590A1 (fr) Moteur linéaire cylindrique
WO2024089882A1 (fr) Moteur
JP2023119627A (ja) 筒型リニアモータ
JP4870340B2 (ja) 電動機
JP2004056884A (ja) 仕事変換装置
WO2019202765A1 (fr) Moteur linéaire cylindrique
JP2024007576A (ja) 筒型リニアモータ

Legal Events

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

Ref document number: 18881194

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018881194

Country of ref document: EP

Effective date: 20200108

NENP Non-entry into the national phase

Ref country code: DE