JPH04131179U - spindle motor - Google Patents
spindle motorInfo
- Publication number
- JPH04131179U JPH04131179U JP1991035548U JP3554891U JPH04131179U JP H04131179 U JPH04131179 U JP H04131179U JP 1991035548 U JP1991035548 U JP 1991035548U JP 3554891 U JP3554891 U JP 3554891U JP H04131179 U JPH04131179 U JP H04131179U
- Authority
- JP
- Japan
- Prior art keywords
- rotor case
- spindle motor
- magnet
- rotor
- spindle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rotational Drive Of Disk (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
(57)【要約】
【目的】本考案はスピンドルモータに関し、ロータケー
スの面振れを防止することを目的とする。
【構成】ロータケース２２における、支持部材３３の外
周側部分と、マグネット取付部２２ｅにおけるマグネッ
ト２３の内周側端部２２ｆとの間において、マグネット
取付部２２ｅの平坦面をプレス加工により凹ました形状
のリブ２２ａを、ロータケース２２の半径方向に沿って
放射状に複数設ける。
【効果】リブ２２ａの補強により、マグネット２３と基
板２８の引き合う力によるロータケース２２の半径方向
の撓みが防止され、ロータケース２２の面振れが防止さ
れる。また、リブ２２ａはプレス加工によりコストを上
昇させずに成形できる。
(57) [Summary] [Purpose] The present invention relates to a spindle motor and aims to prevent surface runout of a rotor case. [Structure] The flat surface of the magnet mounting portion 22e is recessed by press processing between the outer peripheral portion of the support member 33 in the rotor case 22 and the inner peripheral end portion 22f of the magnet 23 in the magnet mounting portion 22e. A plurality of ribs 22a are provided radially along the radial direction of the rotor case 22. [Effect] By reinforcing the ribs 22a, the rotor case 22 is prevented from being bent in the radial direction due to the force of attraction between the magnet 23 and the substrate 28, and the surface runout of the rotor case 22 is prevented. Furthermore, the ribs 22a can be formed by press working without increasing cost.
Description
【０００１】0001
本考案はスピンドルモータに係り、特にスピンドル軸の軸方向においてコイル とマグネットとをギャップを介して重ねたアキシャルギャップ方式のスピンドル モータに関する。 The present invention relates to a spindle motor, in particular a coil in the axial direction of the spindle shaft. Axial gap type spindle in which the and magnet are overlapped via a gap. Regarding motors.
【０００２】0002
図６は従来のスピンドルモータの一例の断面図を示す。 FIG. 6 shows a sectional view of an example of a conventional spindle motor.
【０００３】 同図中、スピンドルモータ１のロータ部２は、大略、スピンドル軸３と、スピ ンドル軸３に固着され、下面の外周部にマグネット４を設けたロータケース５と より構成され、また、ステータ部６は、スピンドル軸３を軸支する軸受７と、上 記マグネット４に対向するコイル８が、基板９上に配設された構成である。ロー タケース５の上面には、ディスクのハブ（図示せず）を磁気的に固着するマグネ ット１０が設けられている。また、図中、１１は、ロータ部２を回転可能な状態 でスピンドル軸３の軸方向において支持する支持部材である。0003 In the figure, the rotor part 2 of the spindle motor 1 is roughly connected to the spindle shaft 3 and the spindle shaft 3. A rotor case 5 is fixed to the handle shaft 3 and has a magnet 4 on the outer periphery of the lower surface. The stator section 6 includes a bearing 7 that pivotally supports the spindle shaft 3, and an upper A coil 8 facing the magnet 4 is arranged on a substrate 9. Low On the top surface of the data case 5, there is a magnet that magnetically fixes the disk hub (not shown). A cut 10 is provided. In addition, in the figure, 11 indicates a state in which the rotor portion 2 is rotatable. This is a support member that supports the spindle shaft 3 in the axial direction.
【０００４】 近年のスピンドルモータの薄型化要求に伴い、スピンドルモータ１においても 、ロータ部２のロータケース５は、板厚の薄い鋼板で形成されている。また、ス ピンドルモータ１がディスク装置に装着された場合、外来ノイズの影響を防止し て、記録、再生特性を向上させるために、ステータ部６の基板９は、薄板状の鉄 板を主体とした構成とされている。0004 With the recent demand for thinner spindle motors, spindle motor 1 also has The rotor case 5 of the rotor portion 2 is formed of a thin steel plate. Also, When the spindle motor 1 is installed in a disk device, it prevents the influence of external noise. In order to improve the recording and reproducing characteristics, the substrate 9 of the stator section 6 is made of a thin plate of iron. It is said to be mainly composed of boards.
【０００５】[0005]
しかるに、従来のスピンドルモータ１においては、ロータ部２のマグネット４ と、鉄板を主体として形成された基板９との間に磁気的な吸引力が働いている。 従って、上記の如く板厚の薄い鋼板で形成されたロータケース５は、支持部材の ない上記支持部材１１の端部である段差部５ａと、マグネット４の内周側端部５ ｂとの間の部分が上記吸引力により撓み、このため、ロータ部２の回転時におい ては、ロータケース５が面振れを起こしてしまうという問題が発生していた。こ の場合、装着されたディスクの回転動作が不安定となり、ディスクへの記録、再 生上好ましくない。 However, in the conventional spindle motor 1, the magnet 4 of the rotor section 2 A magnetic attraction force is exerted between the substrate 9 and the substrate 9, which is mainly formed of an iron plate. Therefore, the rotor case 5 formed of a thin steel plate as described above is a support member. The stepped portion 5a, which is the end of the supporting member 11, and the inner peripheral end 5 of the magnet 4. The part between Therefore, a problem occurred in that the rotor case 5 caused surface runout. child In this case, the rotation of the installed disc becomes unstable, making it difficult to record or play back to the disc. Not good for life.
【０００６】 そこで本考案は上記課題に鑑みなされたもので、ロータケースの面振れを防止 したスピンドルモータを提供することを目的とする。[0006] Therefore, this invention was created in view of the above problems, and prevents surface runout of the rotor case. The purpose of the present invention is to provide a spindle motor with improved performance.
【０００７】[0007]
上記目的を達成するために請求項１の考案は、 スピンドル軸に固着されたロータケースを有するロータと、前記スピンドル軸 の軸受を有するステータとよりなるスピンドルモータにおいて、 前記ロータケースは、前記スピンドル軸を中心として放射状に補強部材を設け た構成である。 In order to achieve the above object, the invention of claim 1: a rotor having a rotor case fixed to a spindle shaft; and a rotor having a rotor case fixed to a spindle shaft; In a spindle motor consisting of a stator having a bearing, The rotor case is provided with reinforcing members radially around the spindle shaft. The configuration is as follows.
【０００８】 また、請求項２の考案は、 前記補強部材は、前記ロータケースを段差状に形成した構成である。[0008] Moreover, the invention of claim 2 is: The reinforcing member has a structure in which the rotor case is formed into a stepped shape.
【０００９】[0009]
請求項１の考案において、ロータケースに放射状に設けられた補強部材は、ロ ータケースを全周囲に渡り半径方向において補強して、ロータケースが半径方向 に撓むことを防止する。 In the invention of claim 1, the reinforcing members provided radially on the rotor case are The rotor case is reinforced in the radial direction around the entire circumference, so that the rotor case is reinforced in the radial direction. prevent it from bending.
【００１０】 請求項２の考案において、ロータケースを段差状に形成して、補強部材を形成 することは、ロータケースにおける補強部材の形成工程を簡略化する。0010 In the invention of claim 2, the rotor case is formed into a stepped shape to form the reinforcing member. This simplifies the process of forming the reinforcing member in the rotor case.
【００１１】[0011]
図１は本考案になるスピンドルモータの一実施例の構成断面図を示す。 FIG. 1 shows a sectional view of the construction of an embodiment of a spindle motor according to the present invention.
【００１２】 同図中、スピンドルモータ２０の構成は、大略、図６に示すスピンドルモータ １の構成と同等であり、スピンドル軸２１と、スピンドル軸２１に固着されたロ ータケース２２と、ロータケース２２の下面、外周部に設けられたマグネット２ ３とによりロータ部２５が構成され、また、スピンドル軸２１を軸支する軸受２ ６と、上記マグネット２３に対向するコイル２７が、基板２８上に配設されてス テータ部３０が構成されている。基板２８も従来の基板９と同様に、薄板鉄板を 主体として形成されたものである。0012 In the figure, the configuration of the spindle motor 20 is roughly the same as that shown in FIG. 1, and includes a spindle shaft 21 and a rotor fixed to the spindle shaft 21. magnet 2 provided on the lower surface and outer periphery of the rotor case 22 and the rotor case 22 3 constitutes a rotor portion 25, and a bearing 2 that pivotally supports the spindle shaft 21. 6 and a coil 27 facing the magnet 23 are arranged on a substrate 28 and A data section 30 is configured. The board 28 is also made of a thin iron plate, similar to the conventional board 9. It is formed as a subject.
【００１３】 また、ロータケース２２の上面には、ディスクのハブ（図示せず）を磁気的に 固着するマグネット３１、及び、ハブを回転駆動せしめる駆動ピン３２が設けら れている。[0013] Additionally, a disk hub (not shown) is magnetically attached to the top surface of the rotor case 22. A fixed magnet 31 and a drive pin 32 for rotationally driving the hub are provided. It is.
【００１４】 ロータ部２５とステータ部３０との間には、マグネット２３とコイル２７が離 間状態を維持すると共に、ロータ部２５が回転可能となるように、ロータ部２５ をスピンドル軸２１の軸方向において支持する支持部材３３が設けられている。 この支持部材３３は、ロータケース２２の下面に設けられた環状部材３３ａと、 基板２８の上面に設けられた環状部材３３ｂとの間に鋼球３３ｃが、ガイド部材 ３３ｄに環状に案内されて挟装された構成である。[0014] A magnet 23 and a coil 27 are separated between the rotor part 25 and the stator part 30. The rotor portion 25 is A support member 33 is provided to support the spindle shaft 21 in the axial direction. This support member 33 includes an annular member 33a provided on the lower surface of the rotor case 22, A steel ball 33c is connected to a guide member between an annular member 33b provided on the upper surface of the substrate 28. It has a configuration in which it is guided and sandwiched in an annular manner by 33d.
【００１５】 スピンドルモータ２０において、本考案の特徴はロータケース２２の形状にあ る。本実施例のロータケース２２は、同図に断面を示すように、上記環状部材３ ３ａの部分と、マグネット２３の内周側端部２２ｆとの間に、凹状の補強部材で あるリブ２２ａが形成された構成である。[0015] In the spindle motor 20, the feature of the present invention lies in the shape of the rotor case 22. Ru. The rotor case 22 of this embodiment has the annular member 3 as shown in cross section in the same figure. A concave reinforcing member is provided between the portion 3a and the inner end 22f of the magnet 23. This is a configuration in which a certain rib 22a is formed.
【００１６】 図２は図１中、ロータケース２２の平面図、図３は図２中、III − III線に沿 う断面図、図４は図２中、IV−IV線に沿う断面図を示す。[0016] 2 is a plan view of the rotor case 22 in FIG. 1, and FIG. 3 is a plan view of the rotor case 22 in FIG. 4 shows a sectional view taken along line IV-IV in FIG. 2.
【００１７】 図２、及び図３に示すように、ロータケース２２は、大略、スピンドル軸（図 示せず）が圧入される圧入孔２２ｂの周囲部であり、ディスクのハブ（図示せず ）と当接する当接部２２ｃと、当接部２２ｃの外周に段差２２ｄを設けて一段低 い位置とされたマグネット取付部２２ｅとが同心の円盤状に形成された構成であ る。[0017] As shown in FIGS. 2 and 3, the rotor case 22 generally has a spindle shaft ( (not shown) is the peripheral part of the press-fit hole 22b into which the disc hub (not shown) is press-fitted. ), and a step 22d is provided on the outer periphery of the contact portion 22c to make it one step lower. The magnet mounting portion 22e, which is positioned at the desired position, is formed into a concentric disk shape. Ru.
【００１８】 上記リブ２２ａは、図２乃至図４に示すように、マグネット取付部２２ｅの平 坦面をプレス加工により凹状に凹ました形状であり、ロータケース２２の段差２ ２ｄの部分と、マグネット取付部２２ｅにおけるマグネット２３の内周側端部２ ２ｆとの間において、ロータケース２２の半径方向に沿って、放射状に複数設け られている。尚、上述した駆動ピン３２が配設される部位には、開口部２２ｇが 穿設されており、この部分にはリブ２２ａは配設されていない。[0018] As shown in FIGS. 2 to 4, the rib 22a is located on the flat surface of the magnet mounting portion 22e. The flat surface is pressed into a concave shape, and the step 2 of the rotor case 22 2d and the inner circumferential end 2 of the magnet 23 in the magnet mounting portion 22e. 2f, a plurality of holes are provided radially along the radial direction of the rotor case 22. It is being Note that an opening 22g is provided at the location where the drive pin 32 described above is disposed. The rib 22a is not provided in this portion.
【００１９】 上記構成のリブ２２ａは、図３、及び図４に示す断面形状により、図１に示す ロータケース２２の支持部材３３と、マグネット２３との間の部分を、半径方向 において補強する。[0019] The rib 22a having the above configuration has the cross-sectional shape shown in FIGS. 3 and 4 as shown in FIG. The portion between the support member 33 of the rotor case 22 and the magnet 23 is Reinforce at.
【００２０】 従って、近年、スピンドルモータの薄型化が進み、これに伴って 0.5mm程度の 板厚寸法の鋼板で形成されている本実施例のロータケース２２においても、リブ ２２ａを形成することによりロータケース２２は半径方向において補強され、従 来において発生していた、マグネット２３と基板２８とが磁気的に引き合う力に よってロータケース２２が撓んでしまうことが防止される。その結果、ロータケ ース２２回転時の面振れは防止される。[0020] Therefore, in recent years, spindle motors have become thinner, and as a result, spindle motors of about 0.5 mm Also in the rotor case 22 of this embodiment, which is formed of a steel plate with a plate thickness, the ribs are By forming the rotor case 22a, the rotor case 22 is reinforced in the radial direction, and the Due to the magnetically attractive force between the magnet 23 and the substrate 28 that had previously occurred, Therefore, the rotor case 22 is prevented from being bent. As a result, Rotake Surface runout during 22 rotations of the base is prevented.
【００２１】 このリブ２２ａは、ロータケース２２を形成する時に、プレス加工により、段 差２２ｄ等の成形と同時に成形されるため、プレスの金型の形状を変えることの みにより簡単に形成され、製造コストの上昇を招くことはない。[0021] When forming the rotor case 22, this rib 22a is formed into a stepped shape by pressing. Because it is formed at the same time as the difference 22d, etc., it is not necessary to change the shape of the press mold. It can be easily formed by drilling and does not increase manufacturing costs.
【００２２】 また、リブ２２ａは、図１に示すように、支持部材３３の外周側と、マグネッ ト２３の内周側端部２２ｆとの間の空間部に下方に凹まされた形状とされている （図６参照）。このため、リブ２２ａはスピンドルモータ２０の他の部品には一 切干渉せず、スピンドルモータ２０の外形寸法を変えることなく、上記面振れ防 止の効果を有することができる。従って、スピンドルモータ２０の他の構成部品 の形状、及び取付寸法等を変更することがないため、リブ２２ａをプレス加工に より低コストで成形する上述した効果と共に、スピンドルモータ２０の製造コス トの上昇を防止することができる。[0022] Further, as shown in FIG. 1, the rib 22a is connected to the outer peripheral side of the support member 33 and The shape is recessed downward in the space between the inner circumferential end 22f of the groove 23. (See Figure 6). Therefore, the rib 22a is not included in other parts of the spindle motor 20. The surface vibration prevention described above is achieved without cutting interference and without changing the external dimensions of the spindle motor 20. It can have a stopping effect. Therefore, other components of the spindle motor 20 Since the shape and mounting dimensions of the rib 22a are not changed, the rib 22a can be pressed. In addition to the above-mentioned effect of molding at a lower cost, the manufacturing cost of the spindle motor 20 is reduced. It is possible to prevent the rise in height.
【００２３】 図５は本考案になるスピンドルモータがディスク装置に装着された一例の平面 図である。[0023] Figure 5 is a plan view of an example of a spindle motor according to the present invention installed in a disk device. It is a diagram.
【００２４】 図１、及び図５に示すように、スピンドルモータ２０は、ディスク装置４０の 本体となるフレーム４１に穿設されたモータ用開口部４２にスピンドルモータ２ ０を露出させる位置で、基板２８をフレーム４１の裏面に当接させ、取付ネジ４ ３によりフレーム４１に固定される。ロータケース２２の上記リブ２２ａの外周 部には、環状の上記マグネット３１がロータケース２２の当接部２２ｃと略同一 高さとなる位置に設けられている。[0024] As shown in FIGS. 1 and 5, the spindle motor 20 is connected to the disk device 40. The spindle motor 2 is inserted into the motor opening 42 bored in the frame 41 which is the main body. 0 is exposed, place the board 28 in contact with the back surface of the frame 41, and then tighten the mounting screws 4. 3 to be fixed to the frame 41. The outer periphery of the rib 22a of the rotor case 22 In the part, the annular magnet 31 is approximately the same as the contact part 22c of the rotor case 22. It is located at a height.
【００２５】 このように、本実施例のスピンドルモータ２０がディスク装置４０に装着され た場合には、上記の如くロータケース２２の面振れが防止されるため、装着され たディスク（図示せず）の回転は安定し、ディスクへの記録、再生特性は良好と なる。[0025] In this way, the spindle motor 20 of this embodiment is installed in the disk device 40. In this case, since the rotor case 22 is prevented from wobbling as described above, The rotation of the disc (not shown) was stable, and the recording and playback characteristics on the disc were good. Become.
【００２６】 尚、上記実施例においてリブ２２ａは、ロータケース２２を下方に凹ませた形 状とされているが、本考案はこれに限定されるものではなく、ロータケース２２ の板面から上方に凸状としたリブであってもよい。[0026] In the above embodiment, the rib 22a has a shape in which the rotor case 22 is recessed downward. However, the present invention is not limited to this, and the rotor case 22 It may be a rib that is convex upward from the plate surface.
【００２７】[0027]
上述の如く請求項１の考案によれば、ロータケースは、全周囲に渡って半径方 向において補強され、半径方向に撓むことが防止されるため、ロータケース回転 時の面振れを防止することができる。このため、請求項１の考案のスピンドルモ ータを装着したディスク装置においては、ディスクの回転が安定し、ディスクの 記録、再生特性を良好とすることができる。 As described above, according to the invention of claim 1, the rotor case has a radial shape over the entire circumference. Rotor case rotation It is possible to prevent surface run-out during operation. Therefore, the spindle model of the invention of claim 1 In a disk device equipped with a Good recording and reproducing characteristics can be achieved.
【００２８】 また、請求項２の考案によれば、ロータケースにおける補強部材の形成工程が 簡略化されるため、スピンドルモータの製造コストの上昇を招くことなく、上記 請求項１の考案による効果を得ることができる。[0028] Further, according to the invention of claim 2, the step of forming the reinforcing member in the rotor case is Because it is simplified, the above can be achieved without increasing the manufacturing cost of the spindle motor. The effect of the invention of claim 1 can be obtained.
【図１】本考案になるスピンドルモータの一実施例の構
成断面図である。FIG. 1 is a sectional view of the structure of an embodiment of a spindle motor according to the present invention.
【図２】図１におけるロータケースの平面図である。FIG. 2 is a plan view of the rotor case in FIG. 1.
【図３】図２中III − III線に沿う断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2;
【図４】図２中IV−IV線に沿う断面図である。4 is a sectional view taken along line IV-IV in FIG. 2. FIG.
【図５】本考案になるスピンドルモータがディスク装置
に装着された一例の平面図である。FIG. 5 is a plan view of an example of a spindle motor according to the present invention installed in a disk device.
【図６】従来のスピンドルモータの一例の構成断面図で
ある。FIG. 6 is a cross-sectional view of an example of a conventional spindle motor.
２０ スピンドルモータ ２１ スピンドル軸 ２２ ロータケース ２２ａ リブ ２２ｂ 圧入孔 ２２ｃ 当接部 ２２ｄ 段差 ２２ｅ マグネット取付部 ２２ｆ マグネットの内周側端部 ２２ｇ 開口部 ２３，３１ マグネット ２５ ロータ部 ２６ 軸受 ２７ コイル ２８ 基板 ３０ ステータ部 ３２ 駆動ピン ３３ 支持部材 ４０ ディスク装置 ４１ フレーム ４２ モータ用開口部 20 spindle motor 21 Spindle axis 22 Rotor case 22a Rib 22b Press-fit hole 22c Contact part 22d step 22e Magnet mounting part 22f Inner peripheral end of magnet 22g opening 23,31 magnet 25 Rotor section 26 Bearing 27 Coil 28 Substrate 30 Stator section 32 Drive pin 33 Support member 40 Disk device 41 frame 42 Motor opening
Claims (2)
を有するロータと、前記スピンドル軸の軸受を有するス
テータとよりなるスピンドルモータにおいて、 前記ロ
ータケースは、前記スピンドル軸を中心として放射状に
補強部材を設けた構成のスピンドルモータ。1. A spindle motor comprising a rotor having a rotor case fixed to a spindle shaft, and a stator having a bearing for the spindle shaft, wherein the rotor case is provided with reinforcing members radially around the spindle shaft. A spindle motor with a different configuration.
差状に形成した構成である請求項１記載のスピンドルモ
ータ。2. The spindle motor according to claim 1, wherein the reinforcing member has a structure in which the rotor case is formed into a stepped shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991035548U JPH04131179U (en) | 1991-05-20 | 1991-05-20 | spindle motor |
| DE4216489A DE4216489C2 (en) | 1991-05-20 | 1992-05-19 | Disk drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991035548U JPH04131179U (en) | 1991-05-20 | 1991-05-20 | spindle motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04131179U true JPH04131179U (en) | 1992-12-02 |
Family
ID=12444782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991035548U Pending JPH04131179U (en) | 1991-05-20 | 1991-05-20 | spindle motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04131179U (en) |
| DE (1) | DE4216489C2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100342244B1 (en) * | 1999-12-07 | 2002-07-02 | 조부평 | An water purifier using ozone |
| KR20190006172A (en) * | 2016-04-13 | 2019-01-17 | 제네시스 로보틱스 앤드 모션 테크놀로지스 캐나다, 유엘씨 | An axial flux electric machine comprising a radially inner thrust bearing and a radially outer thrust bearing |
| KR20190029668A (en) * | 2016-07-15 | 2019-03-20 | 제네시스 로보틱스 앤드 모션 테크놀로지스 캐나다, 유엘씨 | Axial gap electrical machines with permanent magnets arranged between posts |
| US11139707B2 (en) | 2015-08-11 | 2021-10-05 | Genesis Robotics And Motion Technologies Canada, Ulc | Axial gap electric machine with permanent magnets arranged between posts |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10075030B2 (en) | 2015-08-11 | 2018-09-11 | Genesis Robotics & Motion Technologies Canada, Ulc | Electric machine |
| US11043885B2 (en) | 2016-07-15 | 2021-06-22 | Genesis Robotics And Motion Technologies Canada, Ulc | Rotary actuator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB216823A (en) * | 1924-02-13 | 1924-06-05 | Herbert Vaughan Slade | Improvements in and relating to gramophone turntables and the like |
| US3037205A (en) * | 1956-10-09 | 1962-05-29 | Ibm | Magnetic record disc with gassupported transducer |
| US4072315A (en) * | 1975-04-07 | 1978-02-07 | Matsushita Electric Industrial Co., Ltd. | Turntable direct-drive system |
| DE3327123C2 (en) * | 1982-07-27 | 1996-07-11 | Papst Motoren Gmbh & Co Kg | Drive arrangement for signal processing devices |
| JPH02219450A (en) * | 1989-02-17 | 1990-09-03 | Canon Electron Inc | Rotary drive |
| JPH02280645A (en) * | 1989-04-21 | 1990-11-16 | Alps Electric Co Ltd | Bearing structure |
-
1991
- 1991-05-20 JP JP1991035548U patent/JPH04131179U/en active Pending
-
1992
- 1992-05-19 DE DE4216489A patent/DE4216489C2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100342244B1 (en) * | 1999-12-07 | 2002-07-02 | 조부평 | An water purifier using ozone |
| US11139707B2 (en) | 2015-08-11 | 2021-10-05 | Genesis Robotics And Motion Technologies Canada, Ulc | Axial gap electric machine with permanent magnets arranged between posts |
| KR20190006172A (en) * | 2016-04-13 | 2019-01-17 | 제네시스 로보틱스 앤드 모션 테크놀로지스 캐나다, 유엘씨 | An axial flux electric machine comprising a radially inner thrust bearing and a radially outer thrust bearing |
| KR20190029668A (en) * | 2016-07-15 | 2019-03-20 | 제네시스 로보틱스 앤드 모션 테크놀로지스 캐나다, 유엘씨 | Axial gap electrical machines with permanent magnets arranged between posts |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4216489A1 (en) | 1992-11-26 |
| DE4216489C2 (en) | 1996-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000163859A (en) | Recording disk driving device and spindle motor | |
| JP3984451B2 (en) | Motor and disk device | |
| EP0613134B1 (en) | Magnetic disk unit | |
| JPH04131179U (en) | spindle motor | |
| JP4322446B2 (en) | Disk drive | |
| US20020113503A1 (en) | Spindle motor | |
| KR100747006B1 (en) | Spindle motor | |
| KR101039225B1 (en) | Spindle motor and clamper | |
| KR100315519B1 (en) | Disc Drive Motor | |
| JPH09168253A (en) | Bearing structure of motor | |
| JP3709012B2 (en) | Alignment device, motor and optical disk drive | |
| JP3629824B2 (en) | motor | |
| KR101083175B1 (en) | Spindle motor for optical disk drive | |
| JP3815892B2 (en) | Motor bearing structure | |
| JPH054132Y2 (en) | ||
| JPH07245902A (en) | Micromotor | |
| JP3932117B2 (en) | Disk drive motor | |
| KR200290298Y1 (en) | Self-compensating dynamic balancer type turntable for disk player | |
| JP2559224Y2 (en) | Spindle motor | |
| KR100191007B1 (en) | Magnetic center setting apparatus of spindle motor for hard disc driver | |
| KR200277346Y1 (en) | Motor one-body type turntable for disk player | |
| KR100269109B1 (en) | Spindle motor for disc player | |
| KR200314803Y1 (en) | Motor built-in type turntable for disk player | |
| JPH0718045Y2 (en) | Disk holder | |
| JPH04132061A (en) | Magnetic disk device |