JP3326024B2 - Bearing device for small motor - Google Patents
Bearing device for small motorInfo
- Publication number
- JP3326024B2 JP3326024B2 JP25163594A JP25163594A JP3326024B2 JP 3326024 B2 JP3326024 B2 JP 3326024B2 JP 25163594 A JP25163594 A JP 25163594A JP 25163594 A JP25163594 A JP 25163594A JP 3326024 B2 JP3326024 B2 JP 3326024B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- yoke
- lubricant
- rotating shaft
- small 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.)
- Expired - Fee Related
Links
Landscapes
- Sliding-Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、小型モータの軸受装置
に係り、特に荷重がさほど大きくかからない小型モータ
の軸受装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for a small motor, and more particularly to a bearing device for a small motor in which a load is not so large.
【０００２】[0002]
【従来の技術及びその課題】従来から軸受装置に関して
は、種々の技術が提案されている。例えば実公平５８−
４０７７１号公報では、ロータの回転軸を通すケースの
軸受穴の近傍に潤滑剤を充填してなる潤滑剤溜め部を設
けると共に、回転軸に、フッソ樹脂等で形成され、軸受
穴の径より以下の径の穴を有する座金をはめ込み、且つ
座金は潤滑剤中に浸されるように形成した技術がある。
しかしこの軸受技術では、回転軸のラジアル方向の荷重
に対しては、充分な軸受作用を行うことができない。2. Description of the Related Art Various techniques have been proposed for bearing devices. For example, real fair 58-
Japanese Patent No. 40771 discloses that a lubricant reservoir filled with a lubricant is provided in the vicinity of a bearing hole of a case through which a rotating shaft of a rotor is passed, and the rotating shaft is formed of a fluorine resin or the like. There is a technique in which a washer having a hole having a diameter of about 0.1 mm is fitted, and the washer is formed so as to be immersed in a lubricant.
However, with this bearing technique, a sufficient bearing action cannot be performed with respect to the radial load of the rotating shaft.
【０００３】このため、従来からラジアル方向へ荷重の
かかる軸受装置においては、焼結含油軸受やベアリング
装置を使用している。そしてベアリング装置は部品点数
が多く高価であるために、一般的には焼結含油軸受が使
用されている。しかし焼結含油軸受は、軸受として所定
形状に成形し、これを焼成した後でサイジングを行い、
さらに含油させるという様に、製造工程が多く、通常の
モータ組立ラインで製造できる部品ではないという問題
があった。[0003] For this reason, conventionally, a sintered oil-impregnated bearing or a bearing device has been used in a bearing device in which a load is applied in the radial direction. Since the bearing device has many parts and is expensive, a sintered oil-impregnated bearing is generally used. However, sintered oil-impregnated bearings are molded into a predetermined shape as bearings, sintered after firing,
Further, there is a problem that the production process is so many that the oil is impregnated, and that the component cannot be produced by a normal motor assembly line.
【０００４】以上のように、焼結含油軸受やベアリング
を用いた軸受装置では、モータを構成する他の部品群、
例えばヨークと一体化して、これらの部品群と共に複合
機能をもたせるような構成とすることができない。As described above, in a bearing device using a sintered oil-impregnated bearing or a bearing, other parts constituting the motor include:
For example, it is not possible to form a structure that is integrated with the yoke to have a composite function together with these component groups.
【０００５】さらに焼結含油軸受では、油を媒体（構成
材料）に保存して組立する必要があり、取り扱いが面倒
である。即ち、組立ラインへのパーツフィーダによる搬
送作業の際に、油による軸受どうしの張り付き、保存中
や組立中に異物が付着しやすい等の不具合の発生するこ
ともある。Further, in the case of a sintered oil-impregnated bearing, it is necessary to assemble the oil while preserving the oil in a medium (constituent material), and handling is troublesome. That is, during the transfer operation by the parts feeder to the assembly line, problems such as sticking of the bearings with each other by oil and foreign matter easily attaching during storage or assembly may occur.
【０００６】本発明の目的は、従来の焼結含油軸受のよ
うな特別な製造工程を必要とせず、モータの組立ライン
や、それに類する工程で製造可能な簡易な小型モータの
軸受装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a motor assembly line or a simple small motor bearing device which can be manufactured in a similar process without the need for a special manufacturing process as in a conventional sintered oil-impregnated bearing. It is in.
【０００７】[0007]
【課題を解決するための手段】本願請求項１に係る小型
モータの軸受装置は、ヨークと、該ヨークに設けられた
回転軸と接する軸受部と、を備えてなる小型モータの軸
受装置において、前記ヨークには膨出部からなる軸受形
成部が設けられ、該軸受形成部は前記ヨークの回転軸挿
通孔の部分をモータ内部側に折り曲げて前記回転軸の幅
と略同じ幅の空間の円筒空間を形成する側壁からなる軸
受部が前記ヨークと連続一体に形成されると共に該軸受
部には複数のＶスリットが形成され、前記回転軸に配設
されたワッシャと前記軸受部及び軸受形成部で潤滑剤溜
めが形成され、該潤滑剤溜めには潤滑剤が充填され、該
充填された潤滑剤は、前記回転軸が回転するときに、前
記Ｖスリットから前記回転軸と前記軸受部との摺動部に
滲み出し可能とされていることを特徴とする。A bearing device for a small motor according to a first aspect of the present invention is a bearing device for a small motor, comprising: a yoke; and a bearing portion provided on the yoke and in contact with a rotating shaft. The yoke is provided with a bearing forming portion formed of a bulging portion, and the bearing forming portion bends a portion of the rotation shaft insertion hole of the yoke toward the inside of the motor and forms a cylinder having a space substantially equal to the width of the rotation shaft. A bearing portion including a side wall forming a space is formed integrally and continuously with the yoke, a plurality of V slits are formed in the bearing portion, and a washer disposed on the rotating shaft, the bearing portion, and a bearing forming portion. A lubricant reservoir is formed , and the lubricant reservoir is filled with a lubricant;
When the rotating shaft rotates, the filled lubricant is
From the V slit to the sliding part between the rotating shaft and the bearing part
It is characterized by being capable of exuding .
【０００８】本願請求項２に係る小型モータの軸受装置
は、ヨークと、該ヨークに設けられた回転軸と接する軸
受部材と、を備えてなる小型モータの軸受装置におい
て、前記ヨークには膨出部からなる軸受配置部が設けら
れ、前記軸受部材は一方の面が開口した断面コ字状のド
ーナツ型をした枠体から形成され、該枠体の内側空間は
前記回転軸の幅と略同じ幅を有して形成されると共に該
軸受部材の内側の側壁には複数のＶスリットが形成さ
れ、該軸受部材は前記ヨークの軸受配置部に開口側から
圧入され、前記ヨークと軸受部材で形成される空間を潤
滑剤溜めとして、該潤滑剤溜めには潤滑剤が充填され、
該充填された潤滑剤は、前記回転軸が回転するときに、
前記Ｖスリットから前記回転軸と前記軸受部材との摺動
部に滲み出し可能とされていることを特徴とする。A bearing device for a small motor according to a second aspect of the present invention is a bearing device for a small motor comprising a yoke and a bearing member provided on the yoke and in contact with a rotating shaft. The bearing member is formed of a donut-shaped frame having a U-shaped cross section with one surface opened, and the inner space of the frame is substantially the same as the width of the rotating shaft. a plurality of V slits are formed on the inside of the side wall of the bearing member while being formed with a width, the bearing member is <br/> pressure inlet from the opening side to the bearing arrangement of the yoke, the yoke And the space formed by the bearing member as a lubricant reservoir, the lubricant reservoir is filled with a lubricant,
The filled lubricant, when the rotating shaft rotates,
Sliding of the rotating shaft and the bearing member from the V slit
It is characterized by being able to seep into the part .
【０００９】このとき前記軸受部材は硬度が概略ＨＶ２
００程度の材料からなり、バーリング加工によって前記
Ｖスリットに相当する割れ溝を形成するように構成する
と好適である。At this time, the bearing member has a hardness of about HV2.
It is preferable that the material be made of a material of about 00 and be formed so as to form a crack corresponding to the V slit by burring.
【００１０】[0010]
【作用】本発明に係る小型モータの軸受装置では、ヨー
クには膨出部からなる軸受形成部が設けられ、該軸受形
成部は前記ヨークの回転軸挿通孔の部分をモータ内部側
に折り曲げて前記回転軸の幅と略同じ幅の空間の円筒空
間を形成する側壁からなる軸受部が前記ヨークと連続一
体に形成されると共に該軸受部には複数のＶスリットが
形成され、前記回転軸に配設されたワッシャと前記軸受
部及び軸受形成部で潤滑剤溜めを形成し、該潤滑剤溜め
に潤滑剤を充填してなるので、ヨークと一連一体に折り
曲げて製造でき、特別な製造工程を必要とせず、通常の
モータの組立ラインや、それに類する工程で製造可能と
なり、連続的な製造ラインを構築でき、部品点数の削
減，コストが大幅に低減できる。また潤滑剤溜めに存在
する潤滑剤が、Ｖスリットにより、軸受部と回転軸との
摺動部へにじみ出し、Ｖスリットの無い場合に比較し、
大巾に、軸受の寿命向上を図ることができる。In the bearing device for a small motor according to the present invention, the yoke is provided with a bearing forming portion formed of a bulging portion, and the bearing forming portion is formed by bending a portion of the rotary shaft insertion hole of the yoke toward the inside of the motor. A bearing portion including a side wall forming a cylindrical space having a width substantially equal to the width of the rotating shaft is formed continuously and integrally with the yoke, and a plurality of V slits are formed in the bearing portion. A lubricant reservoir is formed by the provided washer, the bearing portion and the bearing forming portion, and the lubricant reservoir is filled with a lubricant. It is not necessary, and it can be manufactured on a normal motor assembly line or a process similar thereto, so that a continuous manufacturing line can be constructed, and the number of parts and cost can be greatly reduced. In addition, the lubricant present in the lubricant reservoir oozes out to the sliding portion between the bearing portion and the rotating shaft by the V slit, and compared to the case without the V slit,
The life of the bearing can be greatly improved.
【００１１】そして軸受部とＶスリットにも潤滑剤は溜
まっており、回転軸が回転することで、Ｖスリット部の
潤滑剤が引きずられ回転軸と軸受部との間の摺動部へ入
り込み、潤滑剤が軸受潤滑剤として機能する。更に余っ
た摺動部の潤滑剤は、Ｖスリットを通じ、もとの潤滑剤
溜めへ戻され、軸受部は常時、適量の潤滑剤が保持され
ることとなる。The lubricant is also accumulated in the bearing portion and the V-slit. When the rotating shaft rotates, the lubricant in the V-slit portion is dragged and enters the sliding portion between the rotating shaft and the bearing portion. The lubricant functions as a bearing lubricant. Further, the remaining lubricant in the sliding portion is returned to the original lubricant reservoir through the V-slit, and the bearing portion always holds an appropriate amount of lubricant.
【００１２】また請求項２のように別部材で構成する
と、組付けが容易であり、軸受部材をヨークの軸受配置
部に開口側から圧入し、ヨークと軸受部材で形成される
空間を潤滑剤溜めとすることにより、モータ内部側への
潤滑剤の侵入を完全に防止できる。Further, when the bearing member is formed of a separate member, the assembly is easy, the bearing member is pressed into the bearing arrangement portion of the yoke from the opening side, and the space formed by the yoke and the bearing member is lubricated. By using the reservoir, it is possible to completely prevent the lubricant from entering the inside of the motor.
【００１３】さらに、軸受部材は硬度が概略ＨＶ２００
程度の材料からなり、バーリング加工によって前記Ｖス
リットに相当する割れ溝を形成するように構成すると、
スリットを形成する工程を省略することができる。Further, the bearing member has a hardness of approximately HV200.
It is made of a material of a degree, and is configured to form a cracked groove corresponding to the V slit by a burring process.
The step of forming the slit can be omitted.
【００１４】[0014]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。なお、以下に説明する部材，配置等は本発明を
限定するものでなく、本発明の趣旨の範囲内で種々改変
することができるものである。An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.
【００１５】図１及び図２は請求項１に係る小型モータ
の軸受装置についての一実施例を示すものであり、図１
は軸受装置を用いた小型モータの要部断面説明図、図２
は図１の軸受部の部分拡大図である。FIGS. 1 and 2 show an embodiment of a bearing device for a small motor according to the first embodiment.
FIG. 2 is an explanatory sectional view of a main part of a small motor using a bearing device, FIG.
FIG. 2 is a partially enlarged view of the bearing unit of FIG. 1.
【００１６】本例の小型モータＭは、ヨーク１１と、固
定子１２と、回転子１３と、軸受装置１４とを備えてい
る。本例のヨーク１１は中空円筒体をした本体１１ａ
と、この本体１１ａの両側に配置された軸受装置１４の
一部を構成する軸受形成部２１とから形成されている。
そして固定子１２はヨーク本体１１ａの内側にマグネッ
トが固着されて構成されている。The small motor M of this embodiment includes a yoke 11, a stator 12, a rotor 13, and a bearing device 14. The yoke 11 of the present embodiment is a main body 11a having a hollow cylindrical body.
And a bearing forming portion 21 which constitutes a part of the bearing device 14 disposed on both sides of the main body 11a.
The stator 12 is configured such that a magnet is fixed inside the yoke main body 11a.
【００１７】また本例の回転子１３は回転軸１５と一体
となった鉄心１６に巻線１７を巻回して形成されてお
り、回転軸１５の出力軸側には整流子１８が配設され、
鉄心１６を挟んで整流子１８と反対側にはブッシュ１９
が形成されている。そして回転軸１５は軸受装置１４に
よって軸支されている。The rotor 13 of this embodiment is formed by winding a winding 17 around an iron core 16 integrated with a rotating shaft 15, and a commutator 18 is disposed on the output shaft side of the rotating shaft 15. ,
A bush 19 is provided on the opposite side of the commutator 18 across the iron core 16.
Are formed. The rotating shaft 15 is supported by the bearing device 14.
【００１８】本例の小型モータＭの軸受装置１４は、上
記軸受形成部２１と、軸受部２２と、ワッシャ２３と、
潤滑剤溜め２４と、潤滑剤２５と、Ｖスリット２６と、
を構成要素としている。The bearing device 14 of the small motor M according to the present embodiment includes a bearing forming portion 21, a bearing portion 22, a washer 23,
A lubricant reservoir 24, a lubricant 25, a V slit 26,
Is a constituent element.
【００１９】本例の軸受形成部２１は、円筒体からなる
ヨーク本体１１ａの両側に膨出部を形成して構成されて
いる。この膨出部からなる軸受形成部２１は、ヨーク本
体１１ａの中心から同心円状に形成され、この軸受形成
部２１はヨーク１１の回転軸１５の挿通孔１１ｂの部分
を残して、モータＭの内部側に折り曲げて形成され、こ
の折り曲げて形成され側壁２２ａ部分は、回転軸１５の
幅Ｘと略同じ幅の空間の円筒空間を形成し、この側壁が
軸受部２２を形成する。このように軸受部２２はヨーク
１１と連続一体に形成される。この軸受部２２には複数
のＶスリット２６が形成されている。The bearing forming portion 21 of the present embodiment is formed by forming bulging portions on both sides of a yoke main body 11a formed of a cylindrical body. The bearing forming portion 21 formed of the bulging portion is formed concentrically from the center of the yoke main body 11a, and the bearing forming portion 21 is provided inside the motor M except for the insertion hole 11b of the rotary shaft 15 of the yoke 11. The side wall 22 a formed by being bent to the side forms a cylindrical space having a space having substantially the same width as the width X of the rotating shaft 15, and the side wall forms the bearing portion 22. Thus, the bearing portion 22 is formed continuously and integrally with the yoke 11. The bearing portion 22 has a plurality of V slits 26 formed therein.
【００２０】そして軸受部２２より内部側でブッシュ１
９より外側の回転軸１５にワッシャ２３を配設し、この
ブッシュ１９と軸受部２２及び軸受形成部２１で潤滑剤
溜め２４を形成している。この潤滑剤溜め２４に潤滑剤
２５としてグリースを充填する。このようにすると、軸
受部２２に形成された複数のＶスリット２６により潤滑
剤２５としてのグリースが、軸受部２２と回転軸１５と
の間に常に介在することとなる。The bush 1 on the inner side of the bearing portion 22
A washer 23 is disposed on the rotating shaft 15 outside the rotating shaft 9, and a lubricant reservoir 24 is formed by the bush 19, the bearing portion 22, and the bearing forming portion 21. The lubricant reservoir 24 is filled with grease as a lubricant 25. In this way, grease as the lubricant 25 is always interposed between the bearing 22 and the rotating shaft 15 due to the plurality of V slits 26 formed in the bearing 22.
【００２１】なお組付けはヨーク１１の軸受形成部２１
に潤滑剤２５としてのグリースを充填し、回転軸１５の
ブッシュ１９にワッシャ２３を配置して、ヨーク１１の
回転軸１５の挿通孔１１ｂへ挿入する。これにより挿通
孔１１ｂの側壁２２ａを形成する軸受部２２で回転軸１
５が軸支される。The assembling is performed by the bearing forming portion 21 of the yoke 11.
Is filled with grease as a lubricant 25, a washer 23 is arranged on a bush 19 of the rotating shaft 15, and inserted into the insertion hole 11 b of the rotating shaft 15 of the yoke 11. As a result, the bearing portion 22 forming the side wall 22a of the insertion hole 11b allows the rotation shaft 1
5 is supported.
【００２２】以上のように構成されているので、潤滑剤
溜め２４に収容された潤滑剤２５（グリス）が、軸受部
２２に形成されたＶスリット２６から、軸受部２２と回
転軸１５との摺動部へ滲み出し、軸受部２２と回転軸１
５との間の摩擦による摩耗を防止し円滑な回転が可能と
なり、大巾に軸受寿命の向上を図ることができる。With the above configuration, the lubricant 25 (grease) contained in the lubricant reservoir 24 is supplied from the V-slit 26 formed in the bearing 22 to the connection between the bearing 22 and the rotating shaft 15. Seepage into the sliding part, bearing part 22 and rotating shaft 1
5 can be prevented from abrasion due to friction, smooth rotation can be achieved, and the life of the bearing can be greatly improved.
【００２３】そして軸受部２２とＶスリット２６にも潤
滑剤２５は溜まっており、回転軸１５が回転することに
より、Ｖスリット２６に存在する潤滑剤２５が引きずら
れ、回転軸１５と軸受部２２の摺動部へ潤滑剤２５（潤
滑グリス）として入り込み、軸受グリスとして機能す
る。さらに余った摺動部の潤滑剤２５（グリス）は、Ｖ
スリット２６を通じ、もとの潤滑剤溜め２４へ戻され、
軸受部２２は常時、適量の潤滑剤２５（グリス）が保持
されることとなる。The lubricant 25 also accumulates in the bearing 22 and the V-slit 26. When the rotary shaft 15 rotates, the lubricant 25 existing in the V-slit 26 is dragged. The lubricant 25 (lubricating grease) enters the sliding portion of the shaft and functions as a bearing grease. The surplus lubricant 25 (grease) of the sliding portion is V
It is returned to the original lubricant reservoir 24 through the slit 26,
The bearing portion 22 always holds an appropriate amount of the lubricant 25 (grease).
【００２４】図３及び図４は請求項２に係る発明の例を
示すもので、図３は部分断面説明図、図４は図３の軸受
部の部分拡大図である。本例において前記実施例と同様
部材等には同一符号を付してその説明を省略する。本例
では軸受部をヨーク１１とは別部材である軸受部材３２
で形成した例を示すものである。FIGS. 3 and 4 show an embodiment of the second aspect of the present invention. FIG. 3 is a partially sectional explanatory view, and FIG. 4 is a partially enlarged view of the bearing portion of FIG. In this embodiment, the same members and the like as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, the bearing portion is a bearing member 32 which is a separate member from the yoke 11.
1 shows an example formed by the method described above.
【００２５】本例のヨーク１１には軸受配置部３１が設
けられ、この軸受配置部３１は外方へ突出した膨出部か
ら構成され、中央に回転軸１５の孔３１ａが形成されて
いる。The yoke 11 of this embodiment is provided with a bearing arrangement portion 31, which is formed of an outwardly protruding bulging portion, and has a hole 31a of the rotary shaft 15 formed in the center.
【００２６】一方、本例の軸受部材３２は片側の面３２
ａが開口した断面コ字状のドーナツ型をした枠体３２ｂ
から形成されている。そして、この枠体３２ｂの中心に
位置する内側空間３３は、回転軸１５の幅Ｘと略同じ幅
で囲った周壁（側壁）３４で形成されている。この軸受
部材３２の内側の側壁３４には複数のＶスリット２６が
形成されている。On the other hand, the bearing member 32 of the present embodiment has a surface 32 on one side.
a-shaped donut-shaped frame 32b having an open U-shape
Is formed from. The inner space 33 located at the center of the frame 32b is formed by a peripheral wall (side wall) 34 surrounded by a width substantially equal to the width X of the rotating shaft 15. A plurality of V slits 26 are formed in a side wall 34 inside the bearing member 32.
【００２７】本例の軸受部材３２は、りん青銅等の金属
材料から構成されたもので、硬度が概略ＨＶ２００程度
の材料からなる。この軸受部材３２はバーリング加工で
形成する。このとき前記実施例のようなＶスリット２６
に相当する割れ溝が、バーリング加工によって必然的に
生じることとなる。このため、本例では、Ｖスリット２
６を形成するための工程が不要となる。The bearing member 32 of this embodiment is made of a metal material such as phosphor bronze and has a hardness of about HV200. The bearing member 32 is formed by burring. At this time, the V slit 26 as in the above embodiment is used.
Is inevitably generated by the burring process. For this reason, in this example, the V slit 2
The step for forming 6 becomes unnecessary.
【００２８】本例の軸受部材３２と軸受配置部３１との
組付けは、前記ヨーク１１の軸受配置部３１に、軸受部
材３２の開口３２ａ側から圧入し、前記ヨーク１１と軸
受部材３２で潤滑剤溜め２４を形成する。そしてこの潤
滑剤溜め２４の空間に潤滑剤２５としてグリースを充填
する。The assembling of the bearing member 32 and the bearing arrangement portion 31 in this embodiment is performed by press-fitting the bearing arrangement portion 31 of the yoke 11 from the opening 32a side of the bearing member 32 and lubricating the yoke 11 and the bearing member 32. An agent reservoir 24 is formed. Then, the space of the lubricant reservoir 24 is filled with grease as a lubricant 25.
【００２９】本例のように構成することによっても、前
記実施例と同様な作用効果を奏することができると共
に、本例ではバーリング加工によってＶスリットを形成
する必要がないだけでなく、ヨークの加工が膨出部だけ
で良いのでより簡単に製造することができる。With the configuration of this embodiment, the same operation and effect as those of the above embodiment can be obtained. In this embodiment, not only the V slit need not be formed by burring, but also the yoke Can be manufactured more simply because only the bulging portion is required.
【００３０】[0030]
【発明の効果】以上のように、本発明に係る小型モータ
の軸受装置では、ヨークと一連一体に折り曲げて製造で
き、特別な製造工程を必要とせず、通常のモータの組立
ラインや、それに類する工程で製造可能となり、連続的
な製造ラインを構築でき、部品点数の削減，コストが大
幅に低減できる。また潤滑剤溜めに存在する潤滑剤が、
Ｖスリットにより、軸受部と回転軸との摺動部へにじみ
出し、Ｖスリットの無い場合に比較し、大巾に、軸受の
寿命向上を図ることができる。As described above, the bearing device for a small motor according to the present invention can be manufactured by bending it integrally with the yoke, and does not require a special manufacturing process. Manufacturing can be performed in the process, a continuous manufacturing line can be constructed, the number of parts can be reduced, and the cost can be significantly reduced. The lubricant present in the lubricant reservoir is
The V-slit oozes out to the sliding portion between the bearing portion and the rotating shaft, and the life of the bearing can be greatly improved compared to the case without the V-slit.
【００３１】そして軸受部とＶスリットにも潤滑剤は溜
まっており、回転軸が回転することで、Ｖスリット部の
潤滑剤が引きずられ回転軸と軸受部との間の摺動部へ入
り込み、潤滑剤が軸受潤滑剤として機能する。更に余っ
た摺動部の潤滑剤は、Ｖスリットを通じ、もとの潤滑剤
溜めへ戻され、軸受部は常時、適量の潤滑剤が保持され
ることとなる。The lubricant also accumulates in the bearing portion and the V-slit. When the rotating shaft rotates, the lubricant in the V-slit portion is dragged and enters the sliding portion between the rotating shaft and the bearing portion. The lubricant functions as a bearing lubricant. Further, the remaining lubricant in the sliding portion is returned to the original lubricant reservoir through the V-slit, and the bearing portion always holds an appropriate amount of lubricant.
【００３２】また請求項２のように別部材で構成する
と、組付けが容易であり、軸受部材をヨークの軸受配置
部に開口側から圧入し、ヨークと軸受部材で形成される
空間を潤滑剤溜めとすることにより、モータ内部側への
潤滑剤の侵入を完全に防止できる。[0032] Further, when the bearing member is constituted by a separate member, the assembling is easy, the bearing member is pressed into the bearing arrangement portion of the yoke from the opening side, and the space formed by the yoke and the bearing member is lubricated. By using the reservoir, it is possible to completely prevent the lubricant from entering the inside of the motor.
【００３３】さらに、軸受部材は硬度が概略ＨＶ２００
程度の材料からなり、バーリング加工によって前記Ｖス
リットに相当する割れ溝を形成するように構成すると、
スリットを形成する工程を省略することができる。以上
のように本願発明によれば、極めて安価で簡易な軸受装
置を提供できる。Further, the hardness of the bearing member is approximately HV200.
It is made of a material of a degree, and is configured to form a cracked groove corresponding to the V slit by a burring process.
The step of forming the slit can be omitted. As described above, according to the present invention, an extremely inexpensive and simple bearing device can be provided.
【図１】本発明に係る軸受装置を用いた小型モータの要
部断面説明図である。FIG. 1 is an explanatory cross-sectional view of a main part of a small motor using a bearing device according to the present invention.
【図２】図１の軸受部の部分拡大図である。FIG. 2 is a partially enlarged view of the bearing unit of FIG.
【図３】請求項２に係る発明の例を示す部分断面説明図
である。FIG. 3 is an explanatory partial sectional view showing an example of the invention according to claim 2;
【図４】図３の軸受部の部分拡大図である。FIG. 4 is a partially enlarged view of the bearing section of FIG. 3;
１１ ヨーク １１ａ ヨーク本体 １１ｂ 挿通孔 １２ 固定子 １３ 回転子 １４ 軸受装置 １５ 回転軸 １６ 鉄心 １７ 巻線 １８ 整流子 １９ ブッシュ ２１ 軸受形成部 ２２ 軸受部 ２３ ワッシャ ２４ 潤滑剤溜め ２５ 潤滑剤 ２６ Ｖスリット ３１ 軸受配置部 ３２ 軸受部材 ３２ａ 開口 ３２ｂ 枠体 ３３ 内側空間 ３４ 周壁（側壁） Ｍ 小型モータ DESCRIPTION OF SYMBOLS 11 Yoke 11a Yoke main body 11b Insertion hole 12 Stator 13 Rotor 14 Bearing device 15 Rotating shaft 16 Iron core 17 Winding 18 Commutator 19 Bush 21 Bearing forming part 22 Bearing part 23 Washer 24 Lubricant reservoir 25 Lubricant 26 V slit 31 Bearing arrangement part 32 Bearing member 32a Opening 32b Frame 33 Inner space 34 Peripheral wall (side wall) M Small motor
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 5/167 F16C 33/10 - 33/12 F16C 17/02 H02K 5/15 H02K 15/14 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) H02K 5/167 F16C 33/10-33/12 F16C 17/02 H02K 5/15 H02K 15/14
Claims (3)
と接する軸受部と、を備えてなる小型モータの軸受装置
において、前記ヨークには膨出部からなる軸受形成部が
設けられ、該軸受形成部は前記ヨークの回転軸挿通孔の
部分をモータ内部側に折り曲げて前記回転軸の幅と略同
じ幅の空間の円筒空間を形成する側壁からなる軸受部が
前記ヨークと連続一体に形成されると共に該軸受部には
複数のＶスリットが形成され、前記回転軸に配設された
ワッシャと前記軸受部及び軸受形成部で潤滑剤溜めが形
成され、該潤滑剤溜めには潤滑剤が充填され、該充填さ
れた潤滑剤は、前記回転軸が回転するときに、前記Ｖス
リットから前記回転軸と前記軸受部との摺動部に滲み出
し可能とされていることを特徴とする小型モータの軸受
装置。1. A bearing device for a small motor comprising a yoke and a bearing portion provided on the yoke and in contact with a rotating shaft, wherein the yoke is provided with a bearing forming portion comprising a bulging portion. The bearing forming portion is formed by bending a portion of the rotary shaft insertion hole of the yoke toward the inside of the motor to form a cylindrical space having a space having substantially the same width as the width of the rotary shaft. a plurality of V slits in the bearing portion formed with the said lubricant reservoir is form <br/> a rotary shaft disposed a washer in the bearing unit and the bearing-forming part, the reservoir lubricant Is filled with lubricant,
When the rotating shaft rotates, the lubricating oil is applied to the V-spin.
Oozes out from the lit into the sliding part between the rotating shaft and the bearing
Bearing system for a small motor, characterized in that it is possible to.
と接する軸受部材と、を備えてなる小型モータの軸受装
置において、前記ヨークには膨出部からなる軸受配置部
が設けられ、前記軸受部材は一方の面が開口した断面コ
字状のドーナツ型をした枠体から形成され、該枠体の内
側空間は前記回転軸の幅と略同じ幅を有して形成される
と共に該軸受部材の内側の側壁には複数のＶスリットが
形成され、該軸受部材は前記ヨークの軸受配置部に開口
側から圧入され、前記ヨークと軸受部材で形成される空
間を潤滑剤溜めとして、該潤滑剤溜めには潤滑剤が充填
され、該充填された潤滑剤は、前記回転軸が回転すると
きに、前記Ｖスリットから前記回転軸と前記軸受部材と
の摺動部に滲み出し可能とされていることを特徴とする
小型モータの軸受装置。2. A bearing device for a small motor comprising a yoke and a bearing member provided on the yoke and in contact with a rotating shaft, wherein the yoke is provided with a bearing arrangement portion comprising a bulging portion. The bearing member is formed of a donut-shaped frame having a U-shaped cross section with one surface opened, and the inner space of the frame has a width substantially equal to the width of the rotating shaft and the bearing A plurality of V-slits are formed on an inner side wall of the member, and the bearing member is press-fitted into a bearing arrangement portion of the yoke from an opening side, and a space formed by the yoke and the bearing member is used as a lubricant reservoir to perform the lubrication. Lubricant is filled in the reservoir
The filled lubricant, when the rotating shaft rotates
At this time, the rotation shaft and the bearing member
A bearing device for a small motor, wherein the bearing device is capable of oozing into a sliding portion of the motor.
度の材料からなり、バーリング加工によって前記Ｖスリ
ットに相当する割れ溝を形成してなることを特徴とする
請求項２記載の小型モータの軸受装置。3. The bearing device for a small motor according to claim 2, wherein the bearing member is made of a material having a hardness of about HV200, and is formed by cracking a groove corresponding to the V slit by burring. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25163594A JP3326024B2 (en) | 1994-09-21 | 1994-09-21 | Bearing device for small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25163594A JP3326024B2 (en) | 1994-09-21 | 1994-09-21 | Bearing device for small motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0898449A JPH0898449A (en) | 1996-04-12 |
| JP3326024B2 true JP3326024B2 (en) | 2002-09-17 |
Family
ID=17225758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25163594A Expired - Fee Related JP3326024B2 (en) | 1994-09-21 | 1994-09-21 | Bearing device for small motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3326024B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5571119B2 (en) * | 2012-04-18 | 2014-08-13 | 三菱電機株式会社 | Electric motor |
-
1994
- 1994-09-21 JP JP25163594A patent/JP3326024B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0898449A (en) | 1996-04-12 |
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