JPH05161314A - Motor - Google Patents
MotorInfo
- Publication number
- JPH05161314A JPH05161314A JP3321657A JP32165791A JPH05161314A JP H05161314 A JPH05161314 A JP H05161314A JP 3321657 A JP3321657 A JP 3321657A JP 32165791 A JP32165791 A JP 32165791A JP H05161314 A JPH05161314 A JP H05161314A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- rotor shaft
- shaped cross
- fixed
- section
- 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
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転子軸の端部に回転
数検知用のマグネットを固定したモータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor in which a magnet for detecting the number of revolutions is fixed to the end of a rotor shaft.
【０００２】[0002]
【従来の技術】近年、回転数を検知するためのマグネッ
トを回転子軸に取り付けたモータが普及している。2. Description of the Related Art In recent years, a motor in which a magnet for detecting the number of revolutions is attached to a rotor shaft has become widespread.
【０００３】従来のこの種のモータについて図３を参照
しながら説明する。図に示すように、軸受１１により支
持される回転子軸１２の端部に一部に平坦面を有したＤ
状断面部１３を形成し、内径に前記Ｄ状断面部１３に係
合する平坦面を設けた嵌合孔１４を有したマグネット１
５を設け、前記回転子軸１２のＤ状断面部１３に接着剤
１６を塗布した後、マグネット１５の嵌合孔１４を嵌合
して回転子軸１２にマグネット１５を固定していた。A conventional motor of this type will be described with reference to FIG. As shown in the figure, a part of the rotor shaft 12 supported by the bearing 11 has a flat surface at the end portion D.
1 having a fitting hole 14 which is formed with a D-shaped cross-section 13 and has a flat surface on the inner diameter for engaging the D-shaped cross-section 13.
5, the adhesive 16 was applied to the D-shaped cross section 13 of the rotor shaft 12, and then the fitting hole 14 of the magnet 15 was fitted to fix the magnet 15 to the rotor shaft 12.
【０００４】また、図４に示すように、回転子軸１２に
形成されたＤ状断面部１３にマグネット１５の嵌合孔１
４を嵌合した後、回転子軸１２に板ばね状のプッシュナ
ット１７を嵌合してマグネット１５を固定することも考
慮されていた。Further, as shown in FIG. 4, the fitting hole 1 of the magnet 15 is formed in the D-shaped cross section 13 formed on the rotor shaft 12.
It has been considered to fit the magnet 15 by fitting the leaf spring-shaped push nut 17 to the rotor shaft 12 after fitting the No. 4 connector.
【０００５】[0005]
【発明が解決しようとする課題】このような従来のモー
タでは、前者においては接着剤１６の塗布の信頼性を確
保するためには作業工程が複雑となり自動化を妨げる要
因となっていた。また、接着個所がモータの軸受１１と
近接しているため、軸受６へ万一接着剤１６が流入した
場合には軸受１１のロックなどの重要不良が発生すると
いう問題があった。In such a conventional motor, in the former case, in order to secure the reliability of the application of the adhesive 16, the working process becomes complicated and becomes a factor to prevent automation. In addition, since the bonding point is close to the bearing 11 of the motor, there is a problem that if the adhesive 16 flows into the bearing 6, an important defect such as locking of the bearing 11 occurs.
【０００６】また、後者においては、プッシュナット１
７の形状が自動圧入する上において取り扱いにくく圧入
の信頼性に欠けるとともに、プッシュナット１７を圧入
するためには回転子軸１２のＤ状断面部１３の長さを長
くする必要があり、軸径の真円度などの悪化によるモー
タ騒音の発生する問題があった。In the latter case, the push nut 1
The shape of 7 is difficult to handle in automatic press-fitting and lacks reliability of press-fitting, and in order to press-fit the push nut 17, it is necessary to lengthen the D-shaped cross-section 13 of the rotor shaft 12. There was a problem that motor noise was generated due to the deterioration of the roundness.
【０００７】本発明は上記課題を解決するもので、自動
組立が容易で、工数の低減および品質の向上を図ること
のできるモータを提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above problems, and an object of the present invention is to provide a motor which can be easily assembled automatically, which can reduce the number of steps and improve the quality.
【０００８】[0008]
【課題を解決するための手段】本発明のモータは上記目
的を達成するために、回転子軸の端部に形成されるＤ状
断面部と、このＤ状断面部に嵌合固定される板ばねを内
部に一体成形した環状のマグネットとを備え、回転子軸
の端部にマグネットに設けた板ばねによりマグネットを
固定せしめる構成とする。In order to achieve the above object, a motor of the present invention has a D-shaped cross section formed at an end of a rotor shaft and a plate fitted and fixed to the D-shaped cross section. An annular magnet having a spring integrally formed therein is provided, and the magnet is fixed to the end of the rotor shaft by a leaf spring provided on the magnet.
【０００９】[0009]
【作用】本発明は上記した構成により、マグネットを回
転子軸に固定するときには、マグネット内に一体成形さ
れた板ばねを回転子軸に形成されたＤ状断面部に嵌合す
ることによりマグネットを固定することができることと
なる。According to the present invention, when the magnet is fixed to the rotor shaft, the leaf spring integrally formed in the magnet is fitted into the D-shaped cross section formed on the rotor shaft. It will be possible to fix.
【００１０】[0010]
【実施例】以下、本発明の一実施例について図１および
図２を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１１】図に示すように、軸受１により支持される
回転子軸２の端部に一部に平坦面を有したＤ状断面部３
を形成する。そして、内径の周縁に複数の切り込み４を
有し、弧状に絞り込んだ形状で、前記回転子軸２のＤ状
断面部３に嵌合される板ばね５を、板ばね５の弾性力が
作用しない周縁部を埋設する状態で環状のマグネット６
の内部に一体成形して構成する。As shown in the drawing, a D-shaped cross section 3 having a flat surface at a part of an end of a rotor shaft 2 supported by a bearing 1.
To form. Then, the elastic force of the leaf spring 5 acts on the leaf spring 5 which has a plurality of notches 4 on the periphery of the inner diameter and is narrowed in an arc shape and which is fitted into the D-shaped cross-section portion 3 of the rotor shaft 2. Ring magnet 6 with its peripheral part buried
It is configured by being integrally molded inside.
【００１２】上記構成において、回転子軸２にマグネッ
ト６を固定する場合には、回転子軸２に形成されたＤ状
断面部３にマグネット６に一体成形された板ばね５の弧
状部分の端部を反圧入方向に向けて圧入嵌合することに
より、マグネット６が板ばね５を介して固定されること
となる。そして、板ばね５の弧状部分の端部は反圧入方
向に向かい回転子軸２に圧入されているので、マグネッ
ト６の抜ける方向に作用する力に反撥し、マグネット６
は確実に固定され、マグネット６の取付作業の自動化が
可能となり、品質も安定することとなる。In the above structure, when the magnet 6 is fixed to the rotor shaft 2, the end of the arc-shaped portion of the leaf spring 5 integrally formed with the magnet 6 on the D-shaped cross-section 3 formed on the rotor shaft 2. The magnet 6 is fixed via the leaf spring 5 by press-fitting and fitting the portion in the counter-pressing direction. Since the end portion of the arc-shaped portion of the leaf spring 5 is pressed into the rotor shaft 2 in the counter-press-fitting direction, it repels the force acting in the direction in which the magnet 6 comes off, and the magnet 6
Is securely fixed, the work of attaching the magnet 6 can be automated, and the quality is stable.
【００１３】[0013]
【発明の効果】以上の実施例から明らかなように本発明
によれば、環状のマグネットの内部に回転子軸の端部に
形成されたＤ状断面部に嵌合する板ばねを一体に設けて
いるので、マグネットの固定に際し、接着剤や別部品の
必要がなくなり、マグネットの固定作業の自動化が図れ
るとともに工数の低減および品質の向上を図ることがで
きるモータを提供できる。As is apparent from the above embodiments, according to the present invention, a leaf spring that fits into a D-shaped cross section formed at the end of the rotor shaft is integrally provided inside the annular magnet. Therefore, when fixing the magnet, there is no need for an adhesive or a separate component, and the motor fixing operation can be automated, and the number of steps and the quality can be reduced.
【図１】（ａ）本発明の一実施例のマグネットを回転子
軸に固定した状態を示す断面図 （ｂ）同マグネットを固定子軸に固定した状態を示す断
面図FIG. 1A is a sectional view showing a state where a magnet according to an embodiment of the present invention is fixed to a rotor shaft. FIG. 1B is a sectional view showing a state where the magnet is fixed to a stator shaft.
【図２】同マグネットに一体成形された板ばねの状態を
示す正面図FIG. 2 is a front view showing a state of a leaf spring integrally formed with the magnet.
【図３】（ａ）従来のマグネットを回転子軸に固定した
状態を示す断面図 （ｂ）同マグネットを回転子軸に固定する前の状態を示
す斜視図FIG. 3A is a cross-sectional view showing a state in which a conventional magnet is fixed to a rotor shaft, and FIG. 3B is a perspective view showing a state before the same magnet is fixed to the rotor shaft.
【図４】（ａ）同他の実施例のマグネットを回転子軸に
固定した状態を示す断面図 （ｂ）同マグネットを回転子軸に固定する前の状態を示
す斜視図FIG. 4A is a sectional view showing a state where the magnet of the other embodiment is fixed to a rotor shaft. FIG. 4B is a perspective view showing a state before the magnet is fixed to the rotor shaft.
【符号の説明】 １ 回転子軸 ３ Ｄ状断面部 ５ 板ばね ６ マグネット[Explanation of reference numerals] 1 rotor shaft 3 D-shaped cross section 5 leaf spring 6 magnet
Claims (1)
と、このＤ状断面部に嵌合固定される板ばねを内部に一
体成形した環状のマグネットとを備え、前記回転子軸の
Ｄ状断面部に前記板ばねによりマグネットを固定したモ
ータ。1. A rotor comprising: a D-shaped cross section formed at an end of a rotor shaft; and an annular magnet integrally formed with a leaf spring fitted and fixed to the D-shaped cross section. A motor in which a magnet is fixed to the D-shaped cross section of the shaft by the leaf spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3321657A JPH05161314A (en) | 1991-12-05 | 1991-12-05 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3321657A JPH05161314A (en) | 1991-12-05 | 1991-12-05 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05161314A true JPH05161314A (en) | 1993-06-25 |
Family
ID=18134958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3321657A Pending JPH05161314A (en) | 1991-12-05 | 1991-12-05 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05161314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6013961A (en) * | 1998-03-18 | 2000-01-11 | Asmo Co., Ltd. | Electric motor having rotation detection sensor |
-
1991
- 1991-12-05 JP JP3321657A patent/JPH05161314A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6013961A (en) * | 1998-03-18 | 2000-01-11 | Asmo Co., Ltd. | Electric motor having rotation detection sensor |
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