WO1998054818A1 - Armature structure for flat motor - Google Patents
Armature structure for flat motor Download PDFInfo
- Publication number
- WO1998054818A1 WO1998054818A1 PCT/JP1997/003244 JP9703244W WO9854818A1 WO 1998054818 A1 WO1998054818 A1 WO 1998054818A1 JP 9703244 W JP9703244 W JP 9703244W WO 9854818 A1 WO9854818 A1 WO 9854818A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- armature
- poles
- coil
- field magnet
- coreless
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
- H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/54—Disc armature motors or generators
Definitions
- the present invention relates to an armature structure of a flat motor applied to a device for transmitting vibrations to a human body, and more particularly to an armature composed of one or more coilless armature coils, which is always smoothly restarted. belongs to. Background art
- Devices for transmitting vibrations to the human body include a wireless telephone calling device (hereinafter referred to as a pager), a mobile phone, a massage machine that exerts a massage effect by applying light vibrations to the human body, and a signal for the visually impaired.
- a wireless telephone calling device hereinafter referred to as a pager
- a mobile phone a mobile phone
- a massage machine that exerts a massage effect by applying light vibrations to the human body
- a signal for the visually impaired Various types of receivers and the like are known, and a flat motor with an eccentric armature is built-in.
- a flat-type vibration generator as shown in FIGS. 14 and 15 is known as such a flat motor (Japanese Patent Application Laid-Open No. 6-255655).
- the vibration generator 1 includes a circular flat plate-shaped field magnet 3 fixed to the bottom of a casing 2 and a rotatable armature 4 arranged to face the field magnet 3.
- the armature 4 is composed of a shaft 5 and a shaft 5.
- the armature 4 is formed by arranging three coils 6 a, 6 b, and 6 c so as to form an inverted fan shape and integrally molding the resin frame 7.
- the armature 4 has a rectifier 8 that rotates together with the coils 6 a, 6 b, and 6 c.
- the commutator 8 contacts two electrode brushes 9 extending from the lower part of the casing 2. As a result, the polarities of the three coils 6 a, 6 b, and 6 c are switched alternately, and each time the armature 4 rotates due to the attraction and repulsion generated with the field magnet 3. to continue.
- the armature 4 itself is largely eccentric as described above, and the armature 4 rotates with a large centrifugal force, so that a strong vibration is generated in the entire device.
- the miniaturization of pagers, mobile phones, massage machines, signal receivers for the visually impaired, etc. has been progressing, and accordingly, there has been a severe demand for minimization and weight reduction of vibration generating devices.
- the armature 4 generates a rotating force due to the repetition of the attraction force and the repulsive force between the coils 6a, 6b, 6c, whose polarity is alternately switched, and the field magnet 3. Therefore, at least three coils 6a, 6b and 6c are required.
- the rotation center angle is approximately 90.
- the armature 4 is composed of one coil 6 of the above, when the armature 4 stops, it enters one polarity of the magnet 3 (S pole in Fig. 16), which divides the N and S poles into four equal parts. If this is the case, the next time the armature 4 is to be started, a situation will occur in which the rotation direction of the armature 4 cannot be determined and the armature 4 will not start smoothly. This is a phenomenon that is observed when both sides 6 d and 6 e of the coil 6 remain in the area Z on the magnet 3 corresponding to the winding width of the coil 6.
- the present invention provides a flat motor, in which even when an armature is constituted by one or two coils, an armature structure in which rotation is reliably and smoothly performed when starting is performed. It is intended to further reduce the size and weight of the device. Further, the present invention aims to simplify the manufacturing process and reduce the manufacturing cost by reducing the number of coils constituting the armature. Disclosure of the invention
- the armature structure of the flat motor according to the present invention is provided on a field magnet having alternating N and S poles so as to rotate relative to the field magnet via an axial gap.
- a flat motor armature having one or more coreless armature coils In a flat motor armature having one or more coreless armature coils,
- a magnetic body is provided on the armature, and when the rotation of the armature is stopped, the magnetic body is positioned at the boundary between the N and S poles of the field magnet, and the N and S poles of the field magnet are positioned.
- the coreless armature coil is located at a position where it can be started by attracting the magnetic poles of the magnetic material and the magnetic poles of the N and S poles generated in the magnetic material.
- the armature structure of the flat motor according to the present invention is provided on a field magnet having magnetic poles of N and S poles alternately so as to rotate relative to the field magnet through an axial gap.
- a permanent magnet having N and S poles is provided on the armature, and when the rotation of the armature is stopped, the permanent magnet is positioned at the boundary between the N and S poles of the field magnet,
- the coreless armature coil comes to a startable position by attracting the N and S poles of the field magnet and the N and S poles of the permanent magnet. It is assumed that.
- the coreless armature coil is constituted by one piece, and a magnetic body or magnetic poles of N and S poles are provided on one side of a frame holding the coreless armature coil.
- the present invention is also characterized in that a permanent magnet having In the armature structure of the flat motor according to the present invention, the coreless armature coil is constituted by one piece, and a magnetic body or N and S magnetic poles are provided in a frame holding the coreless armature coil. It is also characterized by having embedded permanent magnets.
- FIG. 1 is a plan view showing a first embodiment of an armature structure of a flat motor according to the present invention.
- FIG. 2 is a perspective view showing a main part of the armature.
- FIG. 3 is a plan view showing a stop position of the armature on the magnet.
- FIG. 4 is an explanatory view at the time of starting showing the principle of rotation of an armature composed of one coil.
- Fig. 5 is an explanatory diagram showing the principle of rotation of the armature composed of one coil immediately after starting.
- FIG. 6 is an explanatory view of rotation continuation showing the rotation principle of an armature composed of one coil.
- FIG. 7 is a plan view when a magnetic body is arranged inside the armature.
- FIG. 8 is a plan view when a magnetic body is provided on the arm portion on the side opposite to the coil.
- FIG. 9 is a plan view of an electronic device in which a magnetic material is embedded in a resin frame.
- FIG. 10 is a plan view of an armature composed of two coils.
- FIG. 11 is a plan view showing another embodiment of the armature structure of the flat motor according to the present invention.
- FIG. 12 is a perspective view showing a main part of the armature of this embodiment.
- FIG. 13 is a plan view showing a stop position of the armature on the magnet of the embodiment.
- FIG. 14 is a longitudinal sectional view showing an example of a conventional flat motor.
- FIG. 15 is a plan view showing an example of an armature used for a conventional flat motor.
- FIGS. 1 and 2 show a first embodiment of the armature structure of the flat motor according to the present invention.
- the armature 10 is formed by disposing one coreless armature coil 12 inside a resin frame 11 having a substantially 14 circular shape and integrally forming both.
- the key frame 13 of the resin frame 11 is provided with commutators 14 a, 14 b, 14 c, and 14 d that divide the circle into four equal parts.
- the center of the commutator is the rotation of the armature 10.
- a central shaft hole 15 is opened.
- the coreless armature coil 12 is a one-turn coil having a shape substantially corresponding to the shape of the resin frame 11, and the opening angle 01 on both side edges is about 90 degrees.
- the commutators 14 a, 14 b, 14 c, and 14 d have two diagonal pieces, 14 a and 14 c, and 14 b and 14 d, respectively, which are commonly connected. One end is connected to the inner winding end 25 of the coil armature coil 12, and the other is connected to the outer winding end 26.
- the armature 10 in FIG. 1 has a rotation center angle of about 90 degrees, but is not particularly limited to about 90 degrees.
- a magnetic body 20-1 made of an iron pin or the like protrudes from one side edge 11a of the resin frame 11 to the side.
- the magnetic body 20-1 is formed of a thin round bar or a cylinder, and is slightly curved inward so as to form a part of an arc.
- the projecting direction of the magnetic body 20-1 is substantially parallel to the rotation direction or the reverse rotation direction of the armature 10, and is orthogonal to the one side edge 11a.
- the magnetic shape of the magnetic body 20-1 is made circular by making its cross section circular. It is easy to form N pole and S pole on both sides of sex body 20-1. The same effect can be obtained even if the magnetic body 20-1 is not a round rod but a cylinder.
- the strength of the magnetic force of the magnetic material 20-1 depends on the length and the cross-sectional area of the magnetic material 20-1 and must be appropriately selected.
- the shape of the magnetic material is not limited to the round bar shape or the cylindrical shape as in the above-described magnetic material 20-1; the shape of the magnetic material may be a flat plate-like small piece or an elliptical body. Similar effects can be obtained.
- FIG. 3 shows a positional relationship when the armature 10 having the above configuration is stopped by the field magnet 21.
- the field magnet 21 is a disk that is divided into four equal parts and the N and S poles are alternately arranged.
- the pivot 13 of the armature 10 rotates at the center of the field magnet 21. We support as much as possible. After rotating the armature 10 clockwise or counterclockwise on the field magnet 21, the power supply to the coreless armature coil 12 of the armature 10 is turned off. The armature 10 stops with the center in the longitudinal direction of 2 0 — 1 positioned on the boundary line 22 between the N pole and the S pole of the field magnet 21.
- the armature 10 always stops on the N pole of the field magnet 21 with the angle ⁇ 2 shifted by half the length of the magnetic body 20-1, and the coreless armature coil 12 One side 12a protrudes into the adjacent south pole on the other side.
- the magnetic body 20-1 is affected by the field magnet 21 and a magnetic field is generated around it, and the magnetic field 20-1 at both ends is different from the field magnet 21 side.
- Opposite magnetic poles S-pole for the N pole of the field magnet 21 and N-pole for the S pole
- S-pole for the N pole of the field magnet 21 and N-pole for the S pole are created and attracted to the field magnet 21 and the armature 10 Forcibly stop at that position overcoming free rotation It is to let.
- one side 12 a of the coreless armature coil 12 is larger on the S pole side than in the region Z on the field magnet 21 where the armature 10 is difficult to start. Since it protrudes, it will rotate smoothly when armature 10 is started.
- FIGS. 4 to 6. Two electrode brushes 23, 24 extend on the field magnet 21, and the commutators 14 a, 14 b, 14 c, 14 d of the armature 10 are provided at the tip of the electrode brushes 23, 24. Contact. Then, the electrode brushes 23 and 24 slide about 90 degrees on the commutators 14a, 14b, 14c and 14d as the armature 10 rotates. While moving sequentially.
- FIG 4 shows a state when the armature 10 is stopped.
- the magnetic body 20-1 is located on the boundary between the N1 pole and the S2 pole of the field magnet 21 and most of the coilless armature coil 12 is in the field.
- the magnet 21 overlaps the N1 pole of the magnet 21 and one side 12a overlaps the S1 pole of the field magnet 21.
- the coreless armature coil 12 has an opposite polarity S pole on the side facing the field magnet 21 and repels the lower pole S 1 of the field magnet 21, in the same direction.
- the turning force is applied to keep rotating.
- the armature 10 can keep rotating by repeating N and S alternately while rotating, and repeating repulsion and inquiries with the field magnet 21.
- the armature 10 is constituted by one coreless armature coil 12 and a large centrifugal force can be obtained by further providing the weight 17, and the vibration generator can be used. The effect when using it is great.
- the magnetic body 20-1 is formed as one side edge 11a of the resin frame 11. Although they are projected in a direction substantially orthogonal to each other, they need not necessarily be orthogonal as long as N and S poles can be generated on both sides of the magnetic body 20-1. In addition to providing the magnetic body 20-1 on the other side edge 11b of the resin frame 11 as well as projecting from the air core 16 of the coreless armature coil 12 as shown in FIG. Is also possible. Further, as shown in FIG.
- an arm portion 30 is extended to the opposite side of the coreless armature coil 12 with the key portion 13 interposed therebetween, and a magnetic material 20 is attached to the arm portion 30.
- a magnetic material 20 is attached to the arm portion 30.
- one side 11a of the resin frame 11 integrally formed with the coreless armature coil 12 is formed wide, and an iron pin or the like is formed on the one side 11a.
- Magnetic material 20-1 may be embedded. With this configuration, the magnetic body 20-1 is more reliably held, and the magnetic body 20-1 can be molded together with the resin frame 11, thereby facilitating the manufacturing process.
- the field magnet 21 was divided into four equal parts and N and S polarities were alternately applied.
- the relationship with the rotation center angle of the coreless armature coil 12 was 8%. In some cases, equal division may be appropriate.
- the above is the embodiment in which the number of the coreless armature coils 12 constituting the armature 10 is one. However, as shown in FIG. 10, the motor is also applicable to the case where the number of the coreless armature coils 12 is two. The problem with starting rotation of the child 10 is similar. In this case as well, the magnetic material 20-1 is applied to one side edge 11a of the resin frame 11 of the coreless armature coil 12 in the same manner as the armature 10 having the single coreless armature coil 12 described above. Simply by protruding, the rotation can be started smoothly.
- FIG. 11 to 13 show another embodiment of the armature structure of the flat motor according to the present invention.
- a permanent magnet 20-2 protrudes from one side edge 11a of the resin frame 11 to the side.
- the permanent magnet 20-2 is formed in a thin round bar shape or a cylindrical shape, and is slightly curved inward so as to form a part of an arc centered on the shaft hole 15 as a rotation center.
- the protruding direction of the permanent magnets 20-2 is substantially parallel to the rotation direction or the reverse rotation direction of the armature 10, and is orthogonal to the one side edge 11a.
- the cross-sectional shape of the permanent magnet 20-2 into a round bar shape, it becomes easier to form an N pole and an S pole on both sides of the permanent magnet 20-2.
- the same effect can be obtained even if the permanent magnet 20-2 has a cylindrical shape.
- the strength of the magnetic force of the permanent magnet 20-2 depends on the length and the cross-sectional area of the permanent magnet 20-2, so it is necessary to select an appropriate value. That is, armature
- FIG. 13 shows a positional relationship when the armature 10 having the above configuration is stopped by the field magnet 21.
- the field magnet 21 is formed by dividing the disk into four equal parts and alternately arranging the N pole and the S pole.
- the center part of the field magnet 21 has a keyed part 13 of the armature 10. It is rotatably supported.
- the permanent magnet When the armature 10 is rotated clockwise or counterclockwise on the field magnet 21 and the power supply to the coreless armature coil 12 of the armature 10 is turned off, the permanent magnet The S and N poles of 2 0 — 2 are attracted to the N and S poles of the field magnet 21, and the middle in the longitudinal direction is the boundary between the N and S poles of the field magnet 21.
- the armature 10 stops in a state where it is positioned above 22. In other words, the armature 10 always stops on the N pole of the field magnet 21 with the angle ⁇ 2 shifted by half the length of the permanent magnets 20—2, and the coreless armature coil 1 One side 12a of 2 protrudes into the adjacent south pole on the other side.
- the side 12a of the coreless armature coil 12 is larger than the area Z on the field magnet 21 where the armature 10 is difficult to start. Since it protrudes to the S pole side, when the armature 10 is started, it rotates smoothly.
- the armature is provided with a magnetic material or a permanent magnet having N and S poles, and when the rotation of the armature is stopped. Since a magnetic material or a permanent magnet is located at the boundary between the N pole and the S pole of the field magnet so that the coreless armature coil can be started, two coreless armature coils are provided. Alternatively, even with an armature consisting of one piece, the rotation when starting the armature is performed reliably and smoothly, and as a result, the flat motor can be further miniaturized and lightened.
- One or two units from the viewpoint of reducing man-hours and manufacturing costs This is effective for realizing an armature motor with a high efficiency, while a motor as a vibration generator has a large effect of using a single eccentric action with a large eccentric effect for the purpose of obtaining greater vibration. .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97940379A EP1030434A4 (en) | 1997-05-27 | 1997-09-12 | INDUCTOR STRUCTURE FOR FLAT ENGINE |
US09/424,503 US6265796B1 (en) | 1997-05-27 | 1997-09-12 | Motor armature having a magnetic member for restart positioning |
AU42210/97A AU742025B2 (en) | 1997-05-27 | 1997-09-12 | Armature structure for flat motor |
KR10-1999-7011056A KR100488036B1 (ko) | 1997-05-27 | 1997-09-12 | 편평 모터의 전기자 구조 |
TW087102418A TW364237B (en) | 1997-05-27 | 1998-02-20 | An armature structure of motor |
HK00107142A HK1027916A1 (en) | 1997-05-27 | 2000-11-09 | Armature structure for flat motor. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/136733 | 1997-05-27 | ||
JP9136733A JP3039857B2 (ja) | 1997-05-27 | 1997-05-27 | 偏平モータの電機子構造 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998054818A1 true WO1998054818A1 (en) | 1998-12-03 |
Family
ID=15182243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/003244 WO1998054818A1 (en) | 1997-05-27 | 1997-09-12 | Armature structure for flat motor |
Country Status (9)
Country | Link |
---|---|
US (1) | US6265796B1 (ja) |
EP (1) | EP1030434A4 (ja) |
JP (1) | JP3039857B2 (ja) |
KR (1) | KR100488036B1 (ja) |
CN (1) | CN1167180C (ja) |
AU (1) | AU742025B2 (ja) |
HK (1) | HK1027916A1 (ja) |
TW (1) | TW364237B (ja) |
WO (1) | WO1998054818A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2420453A (en) * | 2004-11-22 | 2006-05-24 | Fritz Faulhaber Gmbh & Co Kg D | Magnetic detent for an electric motor |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE357770T1 (de) * | 2000-02-04 | 2007-04-15 | Fujikura Ltd | Vibrations-gleichstrommotor und ankerstruktur |
AU2001278697A1 (en) | 2000-08-11 | 2002-02-25 | Ecchandes Inc. | Overlapping type piezoelectric stator, overlapping type piezoelectric acturator and applications thereof |
JP2002210410A (ja) * | 2001-01-18 | 2002-07-30 | Tokyo Parts Ind Co Ltd | 停止位置保持手段を備えた軸方向空隙型偏心ロータと同偏心ロータを用いた扁平コアレス振動モータ |
JP2004261684A (ja) * | 2003-02-28 | 2004-09-24 | Citizen Electronics Co Ltd | 振動体及びその製造方法 |
KR100568292B1 (ko) * | 2004-02-25 | 2006-04-05 | 삼성전기주식회사 | 평편형 진동모터 |
JP4533681B2 (ja) * | 2004-06-25 | 2010-09-01 | 日本電産コパル株式会社 | 振動モータ |
JP4538290B2 (ja) * | 2004-09-30 | 2010-09-08 | 西川 千暁 | 振動モータ |
CN100370684C (zh) * | 2005-07-27 | 2008-02-20 | 沈阳工业大学 | 一种径向无铁心永磁电动机 |
JP2008148491A (ja) * | 2006-12-12 | 2008-06-26 | Chiaki Nishikawa | モータ及びモータ用電機子 |
CN101889382B (zh) * | 2007-11-09 | 2013-05-01 | 上田义英 | 具备交流电压输出绕组的单向通电型无刷直流电机以及电机系统 |
KR101240701B1 (ko) * | 2012-01-20 | 2013-03-11 | 삼성전기주식회사 | 단상 진동 모터 |
Citations (3)
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JPS62104465A (ja) * | 1985-10-30 | 1987-05-14 | Meiko Denshi Kogyo Kk | ブラシレス偏平モ−タ |
JPH04275046A (ja) * | 1991-02-28 | 1992-09-30 | Namiki Precision Jewel Co Ltd | ペイジャー用振動モータ |
JPH06311693A (ja) * | 1993-04-23 | 1994-11-04 | Shicoh Eng Co Ltd | 偏平形振動発生装置 |
Family Cites Families (11)
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JPS6184683U (ja) * | 1984-11-07 | 1986-06-04 | ||
JPS6281458U (ja) * | 1985-11-07 | 1987-05-25 | ||
JPS6388060A (ja) | 1986-09-30 | 1988-04-19 | 松下電器産業株式会社 | 電動肉挽機 |
JPH07110114B2 (ja) * | 1987-05-21 | 1995-11-22 | 株式会社シコ−技研 | 振動型軸方向空隙型電動機 |
JPS6416180U (ja) * | 1987-07-17 | 1989-01-26 | ||
JP2535186B2 (ja) * | 1987-11-13 | 1996-09-18 | 株式会社シコー技研 | 軸方向空隙型電動機 |
JPH0824416B2 (ja) * | 1987-12-21 | 1996-03-06 | 株式会社シコー技研 | 振動型軸方向空隙型電動機 |
US4864276C1 (en) * | 1988-06-03 | 2001-01-09 | Motorola Inc | Very low-profile motor arrangement for radio pager silent alerting |
JPH05168195A (ja) * | 1991-12-12 | 1993-07-02 | Secoh Giken Inc | 振動発生装置 |
JPH0898458A (ja) * | 1994-09-16 | 1996-04-12 | Shicoh Eng Co Ltd | 偏平形振動発生装置 |
US6051900A (en) * | 1999-08-03 | 2000-04-18 | Tokyo Parts Industrial Co., Ltd. | Flat coreless vibrator motor having no output shaft |
-
1997
- 1997-05-27 JP JP9136733A patent/JP3039857B2/ja not_active Expired - Fee Related
- 1997-09-12 US US09/424,503 patent/US6265796B1/en not_active Expired - Fee Related
- 1997-09-12 KR KR10-1999-7011056A patent/KR100488036B1/ko not_active IP Right Cessation
- 1997-09-12 EP EP97940379A patent/EP1030434A4/en not_active Withdrawn
- 1997-09-12 CN CNB971822115A patent/CN1167180C/zh not_active Expired - Fee Related
- 1997-09-12 AU AU42210/97A patent/AU742025B2/en not_active Ceased
- 1997-09-12 WO PCT/JP1997/003244 patent/WO1998054818A1/ja not_active Application Discontinuation
-
1998
- 1998-02-20 TW TW087102418A patent/TW364237B/zh active
-
2000
- 2000-11-09 HK HK00107142A patent/HK1027916A1/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62104465A (ja) * | 1985-10-30 | 1987-05-14 | Meiko Denshi Kogyo Kk | ブラシレス偏平モ−タ |
JPH04275046A (ja) * | 1991-02-28 | 1992-09-30 | Namiki Precision Jewel Co Ltd | ペイジャー用振動モータ |
JPH06311693A (ja) * | 1993-04-23 | 1994-11-04 | Shicoh Eng Co Ltd | 偏平形振動発生装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1030434A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2420453A (en) * | 2004-11-22 | 2006-05-24 | Fritz Faulhaber Gmbh & Co Kg D | Magnetic detent for an electric motor |
Also Published As
Publication number | Publication date |
---|---|
TW364237B (en) | 1999-07-11 |
JPH10336983A (ja) | 1998-12-18 |
EP1030434A4 (en) | 2005-09-07 |
HK1027916A1 (en) | 2001-01-23 |
CN1167180C (zh) | 2004-09-15 |
AU742025B2 (en) | 2001-12-13 |
EP1030434A1 (en) | 2000-08-23 |
KR20010013077A (ko) | 2001-02-26 |
KR100488036B1 (ko) | 2005-05-09 |
JP3039857B2 (ja) | 2000-05-08 |
AU4221097A (en) | 1998-12-30 |
US6265796B1 (en) | 2001-07-24 |
CN1254452A (zh) | 2000-05-24 |
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