WO2000045500A1 - Moteur - Google Patents

Moteur Download PDF

Info

Publication number
WO2000045500A1
WO2000045500A1 PCT/JP1999/000310 JP9900310W WO0045500A1 WO 2000045500 A1 WO2000045500 A1 WO 2000045500A1 JP 9900310 W JP9900310 W JP 9900310W WO 0045500 A1 WO0045500 A1 WO 0045500A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
case
mouth
permanent magnets
rotor
Prior art date
Application number
PCT/JP1999/000310
Other languages
English (en)
Japanese (ja)
Inventor
Nobuyoshi Tomiya
Original Assignee
Seres Co., Ltd.
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 to JP9281271A priority Critical patent/JPH11103552A/ja
Application filed by Seres Co., Ltd. filed Critical Seres Co., Ltd.
Priority to PCT/JP1999/000310 priority patent/WO2000045500A1/fr
Publication of WO2000045500A1 publication Critical patent/WO2000045500A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Definitions

  • the present invention relates to a small DC motor having a field formed by permanent magnets.
  • the permanent magnet 4 is formed in a cylindrical shape (Fig. 6) or a gutter shape (Fig. 7), and its outer periphery is covered with a cylindrical case 1.
  • the mouth 3 is opposed to the permanent magnet 4. It is placed between the N pole 4a and the S pole 4b magnetized at the position, and the case 1 is supported by inserting the rotating shaft 3b of the mouth 3 into the case 1.
  • the permanent magnets 4a and 4b form a magnetic field, and when a DC current is applied to the nipple winding wire 9 of the nipple 3, the nipple 3 rotates, and a DC current flows through a brush (not shown).
  • Fig. 8 shows another conventional example in which the direction of the current is switched alternately and the rotation of the mouth 3 is continued.
  • the permanent magnets 4a and 4b have a thick flat plate with one side in an arc-shaped cross section. As shown in Fig. 9, they have a round shape, and they are installed facing each other inside Case 1 that is bent in a U-shape, and Robe 3 is attached between them. In this case, the side of Case 1 was opened and the mouth 3 was exposed, so that dust entered and caused a failure.
  • the configuration of the present invention is as follows.
  • the motor case is formed in an n-sided box shape (where n is 4, 6, or 8), and permanent magnets of different polarity are attached to the adjacent corners, and the mouth is placed between these permanent magnets. And the rotating shaft of the mouth is supported by the motor case.
  • the surface of the permanent magnet facing the opening of the permanent magnet may be formed so as to be curved in the same concentric shape as that of the roving.
  • FIG. 1 is a front sectional view of a motor embodying the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA of FIG. Fig. 3 shows the It is sectional drawing which shows 2nd Example of light.
  • FIG. 4 is a sectional view showing a third embodiment of the present invention.
  • FIG. 5 is a sectional view showing a fourth embodiment of the present invention.
  • Fig. 6 to Fig. 9 are cross-sectional views of a conventional motor
  • FIG. 1 is a sectional view of a motor embodying the present invention
  • FIG. 2 is a sectional view taken along line AA of FIG.
  • 1 is a rectangular box-shaped motor case, which is formed by narrowing a thin steel plate into a cylindrical shape with a closed end.
  • 1a is a bearing part with a bearing press-fit hole 5 at the center.
  • Reference numeral 2 denotes a cover, which is formed with a stepped portion 2a according to the inner size of the mouth of the case 1.
  • a bearing flange fitting seat 2c and a bearing press-fitting hole 5 are formed coaxially at the center of the bearing press-fitting portion 2b of the cover 2, and a bearing press-fitting is formed inside the cover 2.
  • a pair of brushes 7 is fixed symmetrically with respect to the hole 5, and one end of the brush 7 protrudes outward from the cover 2.
  • Numeral 3 denotes a mouth, which is formed by press-fitting the rotating shaft 3b into the center of the mouth core 3a and press-fitting a commutator 8 into one side of the rotating shaft 3b.
  • the low iron core 3a is formed by stacking multiple sheet iron plates.
  • the sheet iron plate is formed by projecting a plurality of pole pieces from the center in an equiangular radial pattern, expanding the ends of the pole pieces in an arc shape, and punching them out on the same circumference.
  • the commutator 8 has a cylindrical shape and is made of an insulating material, and a plurality of conductive segments divided along a central axis are provided on an outer periphery thereof.
  • the iron core 3a has three poles, the segments of the commutator 8 are six segments, and the pole pieces of the iron core 3a are different from each other.
  • a winding 9 is wound and its terminals are each connected to a predetermined segment of the commutator 8.
  • a space was formed in the corner space between case 1 and mouth 3 in case 1 to match the shape of the space.
  • the N-pole permanent magnet 4a and the S-pole permanent magnet 4b are fixed with an adhesive or the like.
  • the surfaces of the permanent magnets 4a and 4b facing the mouth 3 are formed to have the same concentric curved shape to make the gap with the mouth 3 uniform.
  • the bearing 10 is press-fitted into the motor case 1, and the other side of the rotating shaft 3 b of the rotating shaft 3 b on which the rotating wire 9 is wound via the bearing 10 is inserted into the rotating shaft 3.
  • the commutator 8 side of b is supported by the bearing 10 of the cover 2, the stepped portion 2 a of the cover 2 is fitted and fixed in the motor case 1, and the opening 3 is freely rotatable with respect to the motor case 1.
  • a pair of brushes 7 of the cover 2 are opposed to each other across the segment of the commutator 8.
  • the ends of a pair of brushes 7 protruding outward are connected to a DC power supply, and the coil is connected to the brushes via the segments of the commutator 8 in contact with the brushes.
  • An electric current is passed through 9 to generate an electromagnet on the pole piece, and the mouth 3 is rotated by the magnetic field of the permanent magnets 4a and 4b.
  • the rotation of the rotor 3 causes the pair of brushes 7 to move on the segments of the commutator 8 to sequentially switch the winding wire 9 and change the direction of the current. Changing, changing the polarity of each pole piece's electromagnet, and maintaining the rotation of Ryukyu 3.
  • the permanent magnets 4a and 4b are formed according to the shape of the space at the corner of the motor case 1, the thickness of the permanent magnet can be increased, and the maximum energy product can be maintained. Wear.
  • the low-iron core 3a has three poles, but the same effect can be obtained even if the low-iron core 3a has three poles or more.
  • the external shape of the motor case 1 can be made smaller than the diameter of the motor case 3. Therefore, even with a roller 3 having the same outer diameter as the conventional one, a motor with a small external dimension can be provided.
  • the motor case 1 since the outer shape of the motor case 1 is made into a rectangular box shape to cover the entire circumference of the motor, dust does not enter the case, and since it is rectangular, the conventional cylindrical motor is used. As described above, the motor case 1 can be fixed directly to the device to which the motor is to be mounted by screwing or bonding without providing a special mounting foot on the motor case 1. In addition, if it is square, it can be easily and reliably handled even when handling the motor as an assembly part at a factory or the like, even if it is handled by a robot such as an automated assembly line robot. be able to.
  • a plurality of permanent magnets 4a and 4b were prepared and attached at each corner, but as shown in FIG. 5, individual permanent magnets to be deployed at the corners were used. It may be connected and integrated.
  • the permanent magnet shown in Fig. 5 has a central portion of a prism that is formed in a circular shape, and N and S are magnetized at a pair of corners 4a and 4b that face each other diagonally. Because it is integrated, it is hard to break even if the thin part sandwiched between the corners is formed thin. Therefore, there is an advantage that not only the size of the motor can be reduced while maintaining the strength, but also the number of parts to be assembled is reduced and the handling is convenient. Also in this example, the permanent magnet is housed in the case 1 having a rectangular cylindrical shape. The case is not limited to a square, but may be a hexagon or octagon.o Industrial applicability
  • the case is made into an n-sided box (where n is any of 4, 6, or 8), and a permanent magnet having a different polarity is provided at an adjacent corner between the mouth and the case.
  • the surface facing the mouth of the permanent magnet is curved in the same concentric shape to form a uniform gap with the mouth and uniform magnetic flux density. Can smooth rotation and enhance its electrical characteristics o
  • the outer shape of the case into a rectangular, hexagonal or octagonal box shape, it is possible to easily install and handle the case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Dc Machiner (AREA)

Abstract

L'invention concerne un moteur de dimensions extérieures réduites, présentant une taille satisfaisante pour un rotor et un enroulement. Ce moteur comprend des aimants (4a, 4b) permanents hétéropolaires installés en alternance dans les coins d'un corps (1) de moteur en forme de boîtier carré, hexagonal ou octogonal. Le rotor est placé sur les côtés interne de ces aimants (4a, 4b) permanents et l'arbre (3a) rotatif du rotor est supporté sur le corps (1) du moteur de manière à pouvoir pivoter. En outre les surfaces des aimants (4a, 4b) permanents opposée au rotor (3) ont une forme courbe ce qui permet de ménager un espace uniforme entre les surfaces et le rotor (3).
PCT/JP1999/000310 1997-09-29 1999-01-26 Moteur WO2000045500A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9281271A JPH11103552A (ja) 1997-09-29 1997-09-29 モータ
PCT/JP1999/000310 WO2000045500A1 (fr) 1997-09-29 1999-01-26 Moteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9281271A JPH11103552A (ja) 1997-09-29 1997-09-29 モータ
PCT/JP1999/000310 WO2000045500A1 (fr) 1997-09-29 1999-01-26 Moteur

Publications (1)

Publication Number Publication Date
WO2000045500A1 true WO2000045500A1 (fr) 2000-08-03

Family

ID=26440085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/000310 WO2000045500A1 (fr) 1997-09-29 1999-01-26 Moteur

Country Status (2)

Country Link
JP (1) JPH11103552A (fr)
WO (1) WO2000045500A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1727259A2 (fr) * 2005-05-27 2006-11-29 Minebea Matsushita Motor Co., Ltd. Petit moteur à courant continu
WO2014015727A1 (fr) * 2012-07-23 2014-01-30 广东肇庆爱龙威机电有限公司 Moteur à courant continu à aimants permanents ayant des fentes auxiliaires pour réduire un couple de saillance

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007049884A (ja) * 2005-07-11 2007-02-22 Minebea-Matsushita Motor Corp 小型ｄｃモータ
JP4728765B2 (ja) * 2005-10-07 2011-07-20 ミネベアモータ株式会社 回転機
JP4920628B2 (ja) * 2008-04-19 2012-04-18 ミネベアモータ株式会社 モータ
CN101673973B (zh) * 2008-09-08 2013-04-24 德昌电机(深圳)有限公司 电机
DE102011014421A1 (de) 2010-03-22 2012-08-09 Johnson Electric S.A. Elektromaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678681U (fr) * 1979-11-19 1981-06-26
JPS57159388U (fr) * 1981-03-31 1982-10-06
JPS6489942A (en) * 1987-09-30 1989-04-05 Shicoh Eng Co Ltd Five-phase dc motor
JPH0191640A (ja) * 1987-09-30 1989-04-11 Aisin Seiki Co Ltd 直流電動機
JPH0759322A (ja) * 1992-10-30 1995-03-03 Tokyo Parts Ind Co Ltd 小型直流モータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678681U (fr) * 1979-11-19 1981-06-26
JPS57159388U (fr) * 1981-03-31 1982-10-06
JPS6489942A (en) * 1987-09-30 1989-04-05 Shicoh Eng Co Ltd Five-phase dc motor
JPH0191640A (ja) * 1987-09-30 1989-04-11 Aisin Seiki Co Ltd 直流電動機
JPH0759322A (ja) * 1992-10-30 1995-03-03 Tokyo Parts Ind Co Ltd 小型直流モータ

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1727259A2 (fr) * 2005-05-27 2006-11-29 Minebea Matsushita Motor Co., Ltd. Petit moteur à courant continu
EP1727259A3 (fr) * 2005-05-27 2008-10-29 Minebea Motor Manufacturing Corporation Petit moteur à courant continu
US7528515B2 (en) 2005-05-27 2009-05-05 Minebea Motor Manufacturing Corporation Small DC motor
US7714472B2 (en) 2005-05-27 2010-05-11 Minebea Motor Manufacturing Corporation Small DC motor
US8013489B2 (en) 2005-05-27 2011-09-06 Minebea Motor Manufacturing Corporation Small DC motor
US8183730B2 (en) 2005-05-27 2012-05-22 Minebea Motor Manufacturing Corporation Motor
US8264112B2 (en) 2005-05-27 2012-09-11 Minnebea Motor Manufacturing Corporation Motor
US9124162B2 (en) 2005-05-27 2015-09-01 Minebea Co., Ltd. Motor
US10069391B2 (en) 2005-05-27 2018-09-04 Minebea Mitsumi Inc. Motor
US11444523B2 (en) 2005-05-27 2022-09-13 Minebea Mitsumi Inc. Motor
WO2014015727A1 (fr) * 2012-07-23 2014-01-30 广东肇庆爱龙威机电有限公司 Moteur à courant continu à aimants permanents ayant des fentes auxiliaires pour réduire un couple de saillance

Also Published As

Publication number Publication date
JPH11103552A (ja) 1999-04-13

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