JPH0898448A - Method and structure for supporting motor shaft - Google Patents
Method and structure for supporting motor shaftInfo
- Publication number
- JPH0898448A JPH0898448A JP24999894A JP24999894A JPH0898448A JP H0898448 A JPH0898448 A JP H0898448A JP 24999894 A JP24999894 A JP 24999894A JP 24999894 A JP24999894 A JP 24999894A JP H0898448 A JPH0898448 A JP H0898448A
- Authority
- JP
- Japan
- Prior art keywords
- motor shaft
- bearing
- peripheral surface
- spacer
- motor
- 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
Landscapes
- Mounting Of Bearings Or Others (AREA)
- Motor Or Generator Frames (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用電装品等に用い
られるモータにおけるモータ軸の支持方法および支持構
造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting method and a supporting structure for a motor shaft of a motor used for electric components for vehicles.
【０００２】[0002]
【従来技術及び発明が解決しようとする課題】一般に、
この種モータのなかには、例えば、モータ軸の出力側に
ウォームを形成し、該ウォームにウォームホイールを噛
合させて動力を取り出すように構成したものがある。そ
してこの様なモータ軸は、ウォームが形成される分、ど
うしても長くなり、このため、モータ軸をモータケーシ
ングに回動自在に軸支する場合に、二点支持では不安定
となるため、モータ軸の両端部と中間部の三点支持構造
を採用することになる。しかるに、このような三点支持
構造としたときに、各軸支部での芯出しが難しいという
問題がある。この様な芯出しの手法として、従来、何れ
か一個所の軸受部について、モータ軸と軸受とのあいだ
に大きなクリアランスを採り、これによって芯ズレを吸
収するようにしていた。ところがこの様にした場合に
は、回転時においてのモータ軸のブレが大きく、モータ
の耐久性の劣化、作動音の増大等の問題がある。BACKGROUND OF THE INVENTION Generally,
Among such motors, there is, for example, one in which a worm is formed on the output side of the motor shaft and a worm wheel is meshed with the worm to take out power. Since such a motor shaft is inevitably lengthened due to the formation of the worm, when the motor shaft is rotatably supported by the motor casing, the two-point support becomes unstable. A three-point support structure of both ends and the middle part will be adopted. However, in the case of such a three-point support structure, there is a problem that it is difficult to center each shaft support. As such a centering method, conventionally, in any one of the bearing portions, a large clearance is provided between the motor shaft and the bearing to absorb the center misalignment. However, in such a case, there is a problem that the motor shaft is largely shaken during rotation, the durability of the motor is deteriorated, and operating noise is increased.
【０００３】そこで、特開平５−１７６４９３号公報に
示される如く、何れか一つの軸受の外周面とケーシング
側軸受部の内周面とのあいだにクリアランスを有する状
態で組み込んだ後、該クリアランスに外部から樹脂材を
注入して軸受をケーシング側に支持固定するようにして
三点の芯出しを行うようにしたものが提唱される。しか
るにこのものでは、面倒かつ煩雑な樹脂材の射出工程が
必要なうえ、モータケーシングに穿設された樹脂注入用
孔からケーシング内に水等が浸入する惧れがある。その
うえ、樹脂注入時において作業性を向上させるには樹脂
材の粘性を低くすることが好ましいが、粘性が低く流れ
やすくなった樹脂材がロータコア側に流れ込んでしまう
惧れがあってその対策を採る必要があり、しかも注入し
た樹脂が固化するまでに長時間のあいだ養生しなければ
ならない等の問題もある。Therefore, as disclosed in Japanese Unexamined Patent Publication No. 5-176493, after assembling with a clearance between the outer peripheral surface of any one of the bearings and the inner peripheral surface of the bearing portion on the casing side, the clearance is set in the clearance. It is proposed that a resin material is injected from the outside so that the bearing is supported and fixed on the casing side to perform centering at three points. However, this method requires a troublesome and complicated injection process of the resin material, and there is a fear that water or the like may enter the casing through the resin injection hole formed in the motor casing. In addition, it is preferable to lower the viscosity of the resin material in order to improve workability during resin injection, but there is a risk that the resin material, which has low viscosity and becomes easy to flow, may flow into the rotor core side, and take measures against it. However, there is also a problem that the injected resin must be cured for a long time before being solidified.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記の如き実
情に鑑みこれらの欠点を一掃することができるモータ軸
の支持方法および支持構造を提供することを目的として
創案されたものであって、モータケーシングに形成され
た軸受筒部の内周面とモータ軸の一端部の外周面とのあ
いだに含油軸受を介装してモータ軸一端部を回動自在に
軸支するにあたり、前記軸受筒部内周面と含油軸受外周
面とのあいだに加熱により軟化する熱可塑性樹脂材から
なる円筒状のスペーサを介装し、該スペーサを加熱軟化
せしめてモータ軸の芯出しを行い、しかる後スペーサを
冷却せしめることでモータ軸を支持するようにしたこと
を特徴とするものである。SUMMARY OF THE INVENTION The present invention was conceived with the object of providing a method of supporting a motor shaft and a supporting structure capable of eliminating these drawbacks in view of the above circumstances. When the oil-impregnated bearing is interposed between the inner peripheral surface of the bearing cylinder portion formed in the motor casing and the outer peripheral surface of the one end portion of the motor shaft, the one end portion of the motor shaft is rotatably supported. A cylindrical spacer made of a thermoplastic resin material that is softened by heating is interposed between the inner peripheral surface of the cylindrical portion and the outer peripheral surface of the oil-impregnated bearing, and the spacer is heated and softened to center the motor shaft, and then the spacer is formed. It is characterized in that the motor shaft is supported by cooling the motor shaft.
【０００５】また本発明は、モータケーシングに形成さ
れた軸受筒部の内周面とモータ軸の一端部の外周面との
あいだに含油軸受を介装してモータ軸一端部を回動自在
に軸支するにあたり、前記軸受筒部内周面にメタルハウ
ジングを圧入すると共に、該メタルハウジング内には、
熱可塑性樹脂材からなる円筒状のスペーサと前記含油軸
受とを内装したことを特徴とするものである。Further, according to the present invention, an oil-impregnated bearing is interposed between an inner peripheral surface of a bearing cylindrical portion formed on a motor casing and an outer peripheral surface of one end of a motor shaft to make one end of the motor shaft rotatable. In supporting the shaft, a metal housing is press-fitted into the inner peripheral surface of the bearing tubular portion, and the metal housing is
A cylindrical spacer made of a thermoplastic resin material and the oil-impregnated bearing are internally provided.
【０００６】そして本発明は、この構成によって、樹脂
材をケーシングの外部から注入することなく、モータ軸
を芯出しされた状態で確実に支持できるようにしたもの
である。According to the present invention, the motor shaft can be reliably supported in the centered state without injecting the resin material from the outside of the casing.
【０００７】[0007]
【実施例】次に、本発明の一実施例を図面に基づいて説
明する。図面において、１は車両用電装品に用いられる
ウォーム減速機付きのモータであって、該モータ１のケ
ーシング２は、有底円筒状のヨーク３の開口側縁部に、
減速機用ハウジング４を一体的に組付けて形成されてい
る。そして、前記ヨーク３には、モータ軸５に一体的に
固着されるロータコア６、刷子７が摺接するコンミテー
タ８、ヨーク３の内周面部に止着される永久磁石９等の
各種部材が組み込まれ、また減速機用ハウジング４に
は、モータ軸５の出力側に形成されるウオーム１０、該
ウォーム１０に噛合するウォームホイール１１等の各部
材が組み込まれていること等は従来通りである。Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a motor with a worm reducer used for electrical equipment for vehicles, and a casing 2 of the motor 1 has an opening side edge portion of a bottomed cylindrical yoke 3,
It is formed by integrally assembling the speed reducer housing 4. The yoke 3 includes various members such as a rotor core 6 integrally fixed to the motor shaft 5, a commutator 8 with which the brush 7 is in sliding contact, and a permanent magnet 9 fixed to an inner peripheral surface of the yoke 3. Further, as in the prior art, the speed reducer housing 4 incorporates various members such as a worm 10 formed on the output side of the motor shaft 5 and a worm wheel 11 that meshes with the worm 10.
【０００８】扨、前記モータ軸５は、ウォーム１０が形
成される先端部が減速機用ハウジング４の一端側に、ま
た中間部が減速機用ハウジング４の他端側に、さらに基
端部がヨーク３の底部に形成される軸受筒部３ａにそれ
ぞれ含油軸受１２、１３、１４を介して回動自在に軸支
されているが、基端部側の軸支部に本発明が実施されて
いる。The motor shaft 5 has a worm 10 formed at its front end on one end side of the speed reducer housing 4, an intermediate part on the other end side of the speed reducer housing 4, and a base end portion. The bearing cylinder portion 3a formed on the bottom portion of the yoke 3 is rotatably supported by the oil-impregnated bearings 12, 13, and 14, respectively, and the present invention is applied to the shaft support portion on the base end side. .
【０００９】つまり、モータ軸５の基端部の外周面には
含油軸受１４が嵌合されるが、該含油軸受１４の外周面
と、前記ヨーク３側の軸受筒部３ａの内周面とのあいだ
には、加熱により軟化する熱可塑性樹脂材（例えばポリ
アセタール樹脂、ポリアミド樹脂等の樹脂材）からなる
円筒状のスペーサ１５が介装されている。そして、モー
タ１の組付け後に、ヨーク３の外部から加熱あるいは高
周波等により前記スペーサ１５を加熱して軟化せしめる
ことで、モータ軸５基端部と含油軸受１４とは、他の二
個所（先端部と中間部）の軸支部の固定的な位置決め支
持によって、三点での芯合わせがなされる位置まで自動
的に移動し、この状態でスペーサ１５を室温に冷却して
硬化せしめることに伴って、モータ軸５の基端部を芯出
しされた状態で支持できるように構成されている。That is, the oil-impregnated bearing 14 is fitted on the outer peripheral surface of the base end portion of the motor shaft 5, and the outer peripheral surface of the oil-impregnated bearing 14 and the inner peripheral surface of the bearing tubular portion 3a on the yoke 3 side. In between, a cylindrical spacer 15 made of a thermoplastic resin material (for example, a resin material such as polyacetal resin or polyamide resin) that is softened by heating is interposed. After the motor 1 is assembled, the spacer 15 is heated from the outside of the yoke 3 by heating or by high frequency to soften the motor, so that the base end of the motor shaft 5 and the oil-impregnated bearing 14 are separated from each other at two other points (tips). Part and intermediate part) by the fixed positioning support of the shaft support part, the spacer 15 is automatically moved to the position where the center is aligned at three points, and in this state the spacer 15 is cooled to room temperature and hardened. The base end of the motor shaft 5 can be supported in a centered state.
【００１０】叙述のごとく構成された本発明の実施例に
おいて、ヨーク３側の軸受筒部３ａの内周面とモータ軸
５の基端部側の含油軸受１４の外周面とのあいだには、
熱可塑性樹脂材からなるスペーサ１５が介装されてい
て、モータ１の組付け後にスペーサ１５を加熱して軟化
せしめることにより、モータ軸５の三点での芯出しをす
ることができ、この状態でスペーサが冷却硬化すること
に伴い、モータ軸を芯出しされた状態で確実に支持でき
ることになる。この結果、三点支持構造のモータ軸５で
あっても、軸受部の一個所についてモータ軸と軸受との
あいだに大きなクリアランスを採る従来のもののよう
に、モータ軸の大きなブレが発生して耐久性が劣化した
り作動音が増大するようなことがない。In the embodiment of the present invention constructed as described above, between the inner peripheral surface of the bearing tubular portion 3a on the yoke 3 side and the outer peripheral surface of the oil-impregnated bearing 14 on the base end side of the motor shaft 5,
A spacer 15 made of a thermoplastic resin material is interposed, and by heating the spacer 15 to soften it after the motor 1 is assembled, the motor shaft 5 can be centered at three points. As the spacer cools and hardens, the motor shaft can be reliably supported in the centered state. As a result, even with the motor shaft 5 having the three-point support structure, as in the conventional one in which a large clearance is provided between the motor shaft and the bearing at one portion of the bearing portion, a large deviation of the motor shaft occurs and the durability is improved. There is no deterioration of the performance or increase of operating noise.
【００１１】この様に本発明が実施されたものにおいて
は、三点支持構造のモータ軸５を、モータ軸５と軸受１
２、１３、１４とのあいだに大きなクリアランスを採る
ことなく芯出しされた状態で確実に支持できるものであ
るが、この場合に、モータ軸５の芯出しは、軸受筒部３
ａの内周面と含油軸受１４の外周面とのあいだに介装し
た熱可塑性樹脂からなるスペーサ１５を加熱するだけの
極めて簡単かつ容易な作業で行えることになる。しかも
この加熱による軟化は、スペーサ１５が偏芯力を受けて
変形する程度でよいから、樹脂材が融解するまで加熱す
る必要は無く、この結果、樹脂材をケーシングの外部か
ら軸受と軸受部とのあいだのクリアランスに注入して芯
出し状態の軸受を固定するもののように、面倒かつ煩雑
な樹脂材の射出工程が不要となるうえ、樹脂材が洩れて
ロータコア６側に流れ込んでしまうこともない。そのう
え、スペーサ１５はモータ軸５の組み込みに合わせて予
め組込まれるので、前記注入するもののように注入孔を
モータケーシングとなるヨーク３に穿設する必要が無
く、雨水等の浸入の惧れが全く無い。In the embodiment of the present invention as described above, the motor shaft 5 having the three-point support structure is composed of the motor shaft 5 and the bearing 1.
Although it is possible to reliably support the motor shaft 5 in a centered state without taking a large clearance between the shaft member 2, 13, and 14, in this case, the motor shaft 5 is centered.
This can be carried out by an extremely simple and easy operation of heating the spacer 15 made of a thermoplastic resin interposed between the inner peripheral surface of a and the outer peripheral surface of the oil-impregnated bearing 14. In addition, since the softening due to this heating may be such that the spacer 15 is deformed by receiving the eccentric force, it is not necessary to heat the resin material until the resin material melts, and as a result, the resin material is separated from the outside of the casing into the bearing and the bearing portion. A complicated and complicated injection process of the resin material is unnecessary, unlike the case where the bearing is fixed in a centered state by injecting it into the clearance between them, and the resin material does not leak and flow into the rotor core 6 side. . In addition, since the spacer 15 is pre-assembled in accordance with the incorporation of the motor shaft 5, it is not necessary to form an injection hole in the yoke 3 serving as the motor casing unlike the above-mentioned injection, and there is no risk of rainwater entering. There is no.
【００１２】尚、本発明は前記第一実施例に限定されな
いものであることは勿論であって、図３、図４に示す第
二実施例のようにしても実施することができる。ここ
で、第一実施例と同じ構成部材については同一の符号を
付すと共に、説明については重複するので省略する。つ
まり、この第二実施例のものは、スペーサ１５を、軸受
筒部３ａに圧入されるメタルハウジング１６に内装せし
める構成としたものであり、この様にすることによっ
て、前記第一実施例が奏するものと同様の作用効果を奏
し得るが、さらにメタルハウジング１６があることによ
り、スペーサ１５の軸受筒部３ａに対する回り止め対策
をより簡単にできることになる。つまり、前記第一実施
例のものでは、スペーサ１５のヨーク３に対する回り止
めをするためには、ヨーク軸受筒部３ａの内周面に、ロ
ーレット加工、スプライン加工、回り止め用突起の突設
等の加工が後加工として別途必要になる。この場合、ヨ
ーク３を加工するとき同時に回り止め加工を施すことが
考えられるが、この様に回り止め加工されたヨークは、
スペーサ１５を必要としない汎用のモータ（二点支持の
モータ）のヨークとして用いることができず、部品の共
通化に適合しないことになって採用できない。ところ
が、後加工として行う回り止め加工は、ヨーク３の筒奥
部で、しかもヨーク３の内径よりも小径となった軸受筒
部３ａの内周面に施す必要があるため、特殊な加工機械
が必要なうえ、手間もかかり、作業性が悪いという問題
がある。The present invention is, of course, not limited to the first embodiment described above, but can be carried out as in the second embodiment shown in FIGS. 3 and 4. Here, the same components as those in the first embodiment are designated by the same reference numerals, and the description will be omitted because it is redundant. That is, the second embodiment has a structure in which the spacer 15 is internally housed in the metal housing 16 which is press-fitted into the bearing tubular portion 3a. By doing so, the first embodiment is achieved. Although it is possible to obtain the same effects as those described above, the provision of the metal housing 16 makes it easier to prevent the spacer 15 from rotating against the bearing cylinder 3a. That is, in the first embodiment, in order to prevent the spacer 15 from rotating with respect to the yoke 3, the inner peripheral surface of the yoke bearing cylindrical portion 3a is knurled, splined, provided with protrusions for preventing rotation, and the like. Will be separately required as post-processing. In this case, it is conceivable that the whirl-stop processing is performed at the same time when the yoke 3 is processed.
The spacer 15 cannot be used as a yoke of a general-purpose motor (motor supporting two points) that does not require the spacer 15, and cannot be adopted because it does not conform to common use of parts. However, since the detent process performed as a post process needs to be performed on the inner peripheral surface of the bearing cylindrical portion 3a having a diameter smaller than the inner diameter of the yoke 3, it is necessary to use a special processing machine. There is a problem in that it is necessary, laborious, and poor in workability.
【００１３】しかるに、メタルハウジング１６は、金属
性であって軸受筒部３ａに圧入するだけで充分に回り止
めされる。そして、メタルハウジング１６の内周面に、
前記スペーサ１５の回り止め用の加工を施すことになる
が、それには、例えば、メタルハウジングをプレス加工
（絞り加工）して成形する際に同時に成形することがで
き、これによって面倒な筒奥部での回り止め加工が必要
ないうえ、ヨーク自体に回り止め加工がなされていない
ので、そのまま汎用モータのヨークとして用いることが
でき、部品の共通化が果たせる。この場合、メタルハウ
ジング１６が専用部品として別途必要になるが、メタル
ハウジング１６自体、小さいものであるうえ構造も簡単
であるので、加工機械に特殊なものがいらず、加工も簡
単にできることになってコスト的に有利なものとなる。However, the metal housing 16 is metallic and can be sufficiently prevented from rotating only by press-fitting it into the bearing tubular portion 3a. Then, on the inner peripheral surface of the metal housing 16,
The spacer 15 is processed to prevent it from rotating, which can be formed at the same time when the metal housing is formed by pressing (drawing). In addition, there is no need for a detent process in the above, and since the detent process is not applied to the yoke itself, it can be used as it is as a yoke of a general-purpose motor, and parts can be shared. In this case, the metal housing 16 is separately required as a dedicated part, but since the metal housing 16 itself is small and has a simple structure, the processing machine does not need any special one and the processing can be easily performed. It is advantageous in terms of cost.
【００１４】[0014]
【作用効果】以上要するに、本発明は叙述の如く構成さ
れたものであるから、モータケーシング側の軸受筒部内
周面と含油軸受外周面とのあいだには、熱可塑性樹脂材
からなるスペーサが介装されており、該スペーサを加熱
して軟化せしめることによりモータ軸の芯出しされる位
置までの自動的な移動が許容され、この状態でスペーサ
が冷却硬化することに伴い、モータ軸を芯出しされた状
態で確実に支持できることになる。この結果、三点支持
構造のモータ軸であっても、スペーサを加熱するだけの
極めて簡単かつ容易な作業で芯出し支持できることにな
って、樹脂材をケーシングの外部から軸受と軸受部との
あいだのクリアランスに注入するもののように、面倒か
つ煩雑な樹脂材の射出工程が不要となるうえ、樹脂材が
洩れてロータコア側に流れ込んでしまうこともなく、さ
らに樹脂注入用孔をモータケーシングに穿設する必要も
ない。In summary, since the present invention is constructed as described above, a spacer made of a thermoplastic resin material is interposed between the inner peripheral surface of the bearing cylinder portion on the motor casing side and the outer peripheral surface of the oil-impregnated bearing. The spacers are mounted so that the spacers are heated and softened to allow automatic movement to the centering position of the motor shaft. It will be possible to reliably support in the state where it is kept. As a result, even a motor shaft with a three-point support structure can be centered and supported by an extremely simple and easy work of heating the spacer, and the resin material is provided between the bearing and the bearing portion from the outside of the casing. In addition to the complicated injection process of resin material, the resin material does not leak and flow into the rotor core side, and a resin injection hole is formed in the motor casing. You don't even have to.
【００１５】また、スペーサを、軸受筒部に圧入される
メタルハウジングに内装せしめる構成としたものでは、
該メタルハウジングの内周面にスペーサの回り止め用の
加工が施されることになるが、この場合、モータケーシ
ングに回り止め加工するものと比して簡単かつ容易に回
り止め加工を行うことができ、しかもモータケーシング
自体には回り止め加工がなされないので、そのまま汎用
モータのケーシングとして用いることができ、部品の共
通化が果たせる。Further, in the structure in which the spacer is internally housed in the metal housing press-fitted into the bearing tubular portion,
The inner peripheral surface of the metal housing is processed to prevent the spacer from rotating. In this case, the rotation preventing process can be performed more easily and easily than the case where the motor casing is processed to prevent rotation. Moreover, since the motor casing itself is not subjected to the rotation stop processing, it can be used as it is as a casing of a general-purpose motor, and the parts can be shared.
【図面の簡単な説明】[Brief description of drawings]
【図１】モータの断面図である。FIG. 1 is a sectional view of a motor.
【図２】要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part.
【図３】第二実施例を示すモータの断面図である。FIG. 3 is a sectional view of a motor showing a second embodiment.
【図４】第二実施例を示す要部拡大断面図である。FIG. 4 is an enlarged cross-sectional view of an essential part showing a second embodiment.
３ ヨーク ３ａ 軸受筒部 ５ モータ軸 １４ 含油軸受 １５ スペーサ １６ メタルハウジング 3 yoke 3a bearing tubular part 5 motor shaft 14 oil-impregnated bearing 15 spacer 16 metal housing
Claims (2)
の内周面とモータ軸の一端部の外周面とのあいだに含油
軸受を介装してモータ軸一端部を回動自在に軸支するに
あたり、前記軸受筒部内周面と含油軸受外周面とのあい
だに加熱により軟化する熱可塑性樹脂材からなる円筒状
のスペーサを介装し、該スペーサを加熱軟化せしめてモ
ータ軸の芯出しを行い、しかる後スペーサを冷却せしめ
ることでモータ軸を支持するようにしたことを特徴とす
るモータ軸の支持方法。1. An oil-impregnated bearing is interposed between an inner peripheral surface of a bearing cylinder portion formed in a motor casing and an outer peripheral surface of one end of a motor shaft to rotatably support one end of the motor shaft. In doing so, a cylindrical spacer made of a thermoplastic resin material that is softened by heating is interposed between the inner peripheral surface of the bearing tubular portion and the outer peripheral surface of the oil-impregnated bearing, and the spacer is heated and softened to center the motor shaft. After that, the motor shaft is supported by cooling the spacers thereafter, thereby supporting the motor shaft.
の内周面とモータ軸の一端部の外周面とのあいだに含油
軸受を介装してモータ軸一端部を回動自在に軸支するに
あたり、前記軸受筒部内周面にメタルハウジングを圧入
すると共に、該メタルハウジング内には、熱可塑性樹脂
材からなる円筒状のスペーサと前記含油軸受とを内装し
たことを特徴とするモータ軸の支持構造。2. An oil-impregnated bearing is interposed between an inner peripheral surface of a bearing cylinder portion formed in the motor casing and an outer peripheral surface of one end of the motor shaft to rotatably support one end of the motor shaft. In supporting the motor shaft, a metal housing is press-fitted into the inner peripheral surface of the bearing tubular portion, and a cylindrical spacer made of a thermoplastic resin material and the oil-impregnated bearing are provided inside the metal housing. Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24999894A JPH0898448A (en) | 1994-09-19 | 1994-09-19 | Method and structure for supporting motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24999894A JPH0898448A (en) | 1994-09-19 | 1994-09-19 | Method and structure for supporting motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0898448A true JPH0898448A (en) | 1996-04-12 |
Family
ID=17201329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24999894A Pending JPH0898448A (en) | 1994-09-19 | 1994-09-19 | Method and structure for supporting motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0898448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999059235A1 (en) * | 1998-05-14 | 1999-11-18 | Mabuchi Motor Co., Ltd. | Small-sized motor with worm speed reducer and method of manufacturing the motor |
| JP2011004589A (en) * | 2009-06-16 | 2011-01-06 | Vorwerk & Co Interholding Gmbh | Electric motor and assembling method of the same |
| KR101030235B1 (en) * | 2008-11-11 | 2011-04-22 | 국방과학연구소 | Universal joint with device for preventing heat transfer and power transmission device having the same |
-
1994
- 1994-09-19 JP JP24999894A patent/JPH0898448A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999059235A1 (en) * | 1998-05-14 | 1999-11-18 | Mabuchi Motor Co., Ltd. | Small-sized motor with worm speed reducer and method of manufacturing the motor |
| US6215209B1 (en) | 1998-05-14 | 2001-04-10 | Mabuchi Motor Co., Ltd. | Small-sized motor equipped with worm gear reducer and method of manufacturing the same |
| CN100392952C (en) * | 1998-05-14 | 2008-06-04 | 马渊马达株式会社 | Small-sized motor with worm speed reducer and method of manufacturing motor |
| KR101030235B1 (en) * | 2008-11-11 | 2011-04-22 | 국방과학연구소 | Universal joint with device for preventing heat transfer and power transmission device having the same |
| JP2011004589A (en) * | 2009-06-16 | 2011-01-06 | Vorwerk & Co Interholding Gmbh | Electric motor and assembling method of the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3349679B2 (en) | Magnetic bearing device and vacuum pump provided with the same | |
| EP0381769B1 (en) | Structure and method for fixing radial type rotor to output shaft of synchronous motor | |
| US6342739B1 (en) | Small-sized motor and method of manufacturing the same | |
| EP1717930B1 (en) | Electric actuator and a motor used therein | |
| JPH05176493A (en) | Resin-poured bearing for small motor | |
| JP2002528032A (en) | Electric motor | |
| US4888508A (en) | Device and procedure to adjust the axial play between the rotor and the stator mounted bearings of an electrical motor | |
| JPH0898448A (en) | Method and structure for supporting motor shaft | |
| KR100240410B1 (en) | Assembling method for permanent type motor | |
| JP2006166598A (en) | Brushless motor, brushless fan motor device, and manufacturing method for brushless motor | |
| JP2001103689A (en) | Rotary electric machine | |
| JPH10322976A (en) | Rotor | |
| JP3316380B2 (en) | Mold motor | |
| JP4756437B2 (en) | Electric motor | |
| CN112217315A (en) | Welding stepping motor | |
| JP2558969Y2 (en) | Shaft and electric motor | |
| JP3530055B2 (en) | motor | |
| JPH05176518A (en) | Stepping motor with lead screw | |
| JPH1198726A (en) | Molded motor | |
| JP2600602Y2 (en) | Rotor | |
| JP2811865B2 (en) | Resin mold motor | |
| KR100208566B1 (en) | Method for adjusting thrust gap of motor for a vehicle | |
| JPH055815Y2 (en) | ||
| JPS63274338A (en) | Built-up construction of bearing with shaft | |
| JPH1089297A (en) | Manufacture of water pump |