JPH10322976A - Rotor - Google Patents
RotorInfo
- Publication number
- JPH10322976A JPH10322976A JP9137526A JP13752697A JPH10322976A JP H10322976 A JPH10322976 A JP H10322976A JP 9137526 A JP9137526 A JP 9137526A JP 13752697 A JP13752697 A JP 13752697A JP H10322976 A JPH10322976 A JP H10322976A
- Authority
- JP
- Japan
- Prior art keywords
- collar
- sensor magnet
- shaft
- rotor
- press
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims 1
- 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 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は回転数を検出するた
めのセンサ−部と回転数を出力するためのマグネットを
搭載した電動機において、マグネットを固定したロ−タ
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor equipped with a sensor for detecting the number of revolutions and a magnet for outputting the number of revolutions, and to a rotor having the magnets fixed.
【0002】[0002]
【従来の技術】回転数を出力するためのマグネットを固
定したロ−タについて、図5に基づいて説明する。以下
に従来の電動機のロ−タについて説明する。図5は従来
の電動機の要部断面図である。1はロ−タコア、2はシ
ャフト、3は止め輪、4はセンサマグネット、7は玉軸
受である。ロ−タコア1はシャフト2に圧入又はカシメ
固定されている。止め輪3はシヤフト2に挿入され、玉
軸受7はシャフト2の端より圧入されて止め輪3にて位
置決めされる。センサマグネット4は止め輪3にて位置
決めされシャフト2に接着剤により固定されている。2. Description of the Related Art A rotor to which a magnet for outputting the number of rotations is fixed will be described with reference to FIG. Hereinafter, a conventional motor rotor will be described. FIG. 5 is a sectional view of a main part of a conventional electric motor. 1 is a rotor core, 2 is a shaft, 3 is a retaining ring, 4 is a sensor magnet, and 7 is a ball bearing. The rotor core 1 is press-fitted or caulked to the shaft 2. The retaining ring 3 is inserted into the shaft 2, and the ball bearing 7 is press-fitted from the end of the shaft 2 and positioned by the retaining ring 3. The sensor magnet 4 is positioned by the retaining ring 3 and fixed to the shaft 2 by an adhesive.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の技術の構成では以下のような問題点を有している。
図5の場合、センサマグネットはシャフトに接着剤にて
固定されている。一般的に電動機のロ−タは発熱し温度
が高くなるのでこの接着剤には耐熱性の高い材料が選ば
れるが、このような接着剤は硬化までの時間が非常に長
くかつ温度を上げて硬化させるものが多い。従って非常
に作業性が悪く、コストアツプの要因となる。また硬化
する場合温度を上げることにより、玉軸受は必然的に後
圧入となりロ−タを作成する工程が2度生じることにな
り自動化がむずかしく、コストアップの要因となる。本
発明は上記従来の技術の問題点を解決するもので、セン
サマグネットの接着を廃止しロ−タ作成工程の工数削減
が図れ、なおかつ温度上昇に対する信頼性の向上とコス
トダウンが図れるロ−タを提供することを目的とする。However, the configuration of the above-mentioned conventional technique has the following problems.
In the case of FIG. 5, the sensor magnet is fixed to the shaft with an adhesive. Generally, a motor rotor generates heat and the temperature becomes high. Therefore, a material having high heat resistance is selected for the adhesive. However, such an adhesive has a very long time until hardening and requires a high temperature. Many are cured. Therefore, the workability is very poor, which causes a cost increase. When the temperature is hardened, increasing the temperature inevitably causes the ball bearings to be post-press-fitted, so that the step of forming the rotor occurs twice, which makes automation difficult and increases the cost. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and eliminates the adhesion of the sensor magnet, reduces the number of steps in the rotor preparation process, and improves the reliability against the temperature rise and reduces the cost. The purpose is to provide.
【0004】[0004]
【課題を解決するための手段】この目的を達成するため
に、本発明のロ−タは以下のような構成を有している。
シャフトに止め輪を挿入し、センサマグネットの内周に
カラ−の外周を圧入して一体化してから、カラ−の内周
をシャフトに圧入する。即ち、カラ−挿入位置のシャフ
トのカラ−との嵌合部分にはロ−レットを設けて、シャ
フト径より大きくし、センサマグネットと一体化されて
いるカラ−をシャフトロ−レットに圧入固定し、このカ
ラ−は圧入されセンサマグネットを止め輪側に当接する
まで移動させて位置決めを行い、さらに玉軸受をカラ−
の端面に当接するまで圧入して、前記止め輪とカラ−に
てセンサマグネットをはさみ込み固定した構成を有して
いる。In order to achieve this object, the rotor of the present invention has the following configuration.
A retaining ring is inserted into the shaft, the outer periphery of the collar is press-fitted into the inner periphery of the sensor magnet and integrated, and then the inner periphery of the collar is press-fitted into the shaft. That is, a knurl is provided at the fitting portion of the shaft at the color insertion position with the collar to make the shaft larger than the shaft diameter, and the color integrated with the sensor magnet is press-fitted and fixed to the shaft knurl, The collar is press-fitted and positioned by moving the sensor magnet until it comes into contact with the retaining ring side.
The sensor ring is press-fitted until it abuts against the end surface of the sensor magnet, and the sensor magnet is sandwiched and fixed between the retaining ring and the collar.
【0005】[0005]
【発明の実施の形態】この構成により、センサマグネッ
トは止め輪と玉軸受及びカラ−により確実に接着剤を使
用せずに固定でき、軸方向のずれをなくすことができ
る。また、軸に対して円周方向のずれに対しては、セン
サマグネットの内周側に設けたHカット加工部とカラ−
の外周側に設けたHカット加工部と突起により圧入固定
でき、円周方向のずれをなくすことができる。また、ロ
−タ作成工程の工数の大幅削減ができる。With this configuration, the sensor magnet can be securely fixed without using an adhesive by a retaining ring, a ball bearing, and a collar, and an axial displacement can be eliminated. In addition, with respect to the displacement in the circumferential direction with respect to the shaft, the H-cut processing portion provided on the inner peripheral side of the sensor magnet is provided with a collar.
Can be press-fitted and fixed by the H-cut processing portion and the projection provided on the outer peripheral side of the, and can eliminate the displacement in the circumferential direction. Also, the number of steps in the rotor creation process can be significantly reduced.
【0006】[0006]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図1において1はロ−タコア、2は
シャフト、3は止め輪、4はセンサマグネット、5はカ
ラ−、6はロ−レット、7は玉軸受である。ロ−タコア
1はシャフト2に圧入又はカシメ固定されており、止め
輪3はシャフトに挿入されている。センサマグネット4
の内周にカラ−5の外周を圧入して一体化し、そして、
シャフト2のカラ−5との嵌合部分にはロ−レット6を
形成することにより、ロ−レット部はシャフト径より大
きくなり、センサマグネット4と一体化されているカラ
−5をシャフトロ−レット6に圧入固定することによ
り、カラ−がシャフトの回転方向に対して大きな摩擦を
生じるので、回転方向の移動が防止できる。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a rotor core, 2 is a shaft, 3 is a retaining ring, 4 is a sensor magnet, 5 is a collar, 6 is a knurl, and 7 is a ball bearing. The rotor core 1 is press-fitted or caulked to a shaft 2, and a retaining ring 3 is inserted into the shaft. Sensor magnet 4
The outer circumference of color 5 is pressed into the inner circumference of
By forming a knurl 6 at the fitting portion of the shaft 2 with the collar 5, the knurl portion becomes larger than the shaft diameter, and the collar 5 integrated with the sensor magnet 4 is moved to the shaft knurl. By press-fitting and fixing the shaft 6, the collar generates a large amount of friction in the rotation direction of the shaft, so that the movement in the rotation direction can be prevented.
【0007】また、センサマグネット4とカラ−5間に
はマグネット成形の公差用のスキマがあっても、カラ−
5の外周側に設けた複数の突起により圧入状態となる。
そして、センサマグネット4を止め輪3側に当接するま
で移動させて位置決めを行い、さらに玉軸受7をカラ−
5の端面に当接するまで圧入して、前記止め輪3とカラ
−5にてセンサマグネット4をはさみ込み固定する。こ
のような構成によりシャフト方向のずれをなくすことが
できる。Further, even if there is a clearance for tolerance of magnet forming between the sensor magnet 4 and the collar 5, the
The plurality of protrusions provided on the outer peripheral side of No. 5 make a press-fit state.
The positioning is performed by moving the sensor magnet 4 until it comes into contact with the retaining ring 3 side.
The sensor magnet 4 is clamped between the retaining ring 3 and the collar 5 to be fixed. With such a configuration, a shift in the shaft direction can be eliminated.
【0008】また、センサマグネットとカラ−の回転方
向のずれに対しては、センサマグネットとカラ−とのス
キマにセンサマグネットの内周側に設けたHカット加工
部とカラ−の外周側に設けたHカット加工部とを合致さ
せて挿入するに際し、カラ−の外周側に設けた複数の突
起により圧入固定でき、回転方向のずれをなくすことが
できる。In order to prevent the sensor magnet and the collar from being displaced in the rotational direction, an H-cut portion provided on the inner peripheral side of the sensor magnet and the outer peripheral side of the collar are provided between the sensor magnet and the collar. When the H-cut processing portion is inserted in alignment with the H-cut processing portion, a plurality of projections provided on the outer peripheral side of the collar can be press-fitted and fixed, thereby eliminating a shift in the rotation direction.
【0009】図2は本発明のセンサマグネットの平面図
である。センサマグネットの内周側にはカラ−外周に設
けたHカット加工部と嵌合するようにHカット加工部8
を設ける。FIG. 2 is a plan view of the sensor magnet of the present invention. On the inner peripheral side of the sensor magnet, an H-cut processing portion 8 is fitted so as to fit with an H-cut processing portion provided on the outer periphery of the collar.
Is provided.
【0010】図3は本発明のカラ−の平面図で、センサ
マグネットとカラ−間のスキマには圧入状態で介在でき
るようにカラ−の外周には複数の突起9を設ける。ま
た、カラ−の外周にはセンサマグネットの内周側に設け
たHカット加工部と嵌合するようにHカット加工部10
を設ける。FIG. 3 is a plan view of the collar according to the present invention. A plurality of projections 9 are provided on the outer periphery of the collar so that the gap between the sensor magnet and the collar can be interposed in a press-fit state. An H-cut processing portion 10 is provided on the outer periphery of the collar so as to fit with an H-cut processing portion provided on the inner peripheral side of the sensor magnet.
Is provided.
【0011】図4は図3のA−A線に沿う半断面図であ
り、9及び10はそれぞれカラ−に設けられた突起とH
カット加工部である。FIG. 4 is a half sectional view taken along the line A--A in FIG. 3, and reference numerals 9 and 10 denote protrusions provided on the collar and H, respectively.
It is a cutting part.
【0012】[0012]
【発明の効果】以上のように本発明のセンサマグネット
は止め輪と玉軸受及びカラ−によりはさみ込まれ接着剤
を使用せずに固定でき、ロ−タ作成工程の工数の大幅削
減が可能である。As described above, the sensor magnet of the present invention is sandwiched between the retaining ring, the ball bearing, and the collar, and can be fixed without using an adhesive, so that the man-hour for the rotor making process can be greatly reduced. is there.
【図1】本発明の一実施例におけるロ−タの半断面図で
ある。FIG. 1 is a half sectional view of a rotor according to an embodiment of the present invention.
【図2】本発明の一実施例におけるセンサマグネットの
平面図である。FIG. 2 is a plan view of a sensor magnet according to one embodiment of the present invention.
【図3】本発明の一実施例におけるカラ−の平面図であ
る。FIG. 3 is a plan view of a color according to an embodiment of the present invention.
【図4】図3のA−A線に沿う半断面図である。FIG. 4 is a half sectional view taken along line AA of FIG. 3;
【図5】従来の電動機の要部断面図である。FIG. 5 is a sectional view of a main part of a conventional electric motor.
1 ロ−タコア 2 シャフト 3 止め輪 4 センサマグネット 5 カラ− 6 ロ−レット 7 玉軸受 8 Hカット加工部 9 突起 10 Hカット加工部 DESCRIPTION OF SYMBOLS 1 Rotor core 2 Shaft 3 Retaining ring 4 Sensor magnet 5 Color 6 Rollet 7 Ball bearing 8 H cut processing part 9 Projection 10 H cut processing part
Claims (4)
−タを有するモ−タにおいてセンサマグネットをシャフ
トに挿入した止め輪と玉軸受に当接したシャフトのロ−
レットに保持されたカラ−にてはさみ込み固定したこと
を特徴とするロ−タ。1. A motor having a rotor provided with a sensor magnet for position detection, comprising: a retaining ring in which the sensor magnet is inserted into the shaft;
A rotor characterized in that it is clamped and fixed by a collar held by a let.
とし、カラ−の外周とセンサマグネットの内周間にスキ
マを設けたことを特徴とする請求項1記載のロ−タ。2. The rotor according to claim 1, wherein the shaft, the ball bearing and the collar are press-fitted and fixed, and a clearance is provided between the outer circumference of the collar and the inner circumference of the sensor magnet.
ット加工部と前記カラ−の外周側に設けたHカット加工
部とを合致させて固定したことを特徴とする請求項1記
載のロ−タ。3. An H-cut portion provided on the inner peripheral side of the sensor magnet and an H-cut portion provided on the outer peripheral side of the collar are fixed so as to match with each other. -Ta.
外周とセンサマグネットの内周間のスキマに介在させた
ことを特徴とする請求項1記載のロ−タ。4. The rotor according to claim 1, wherein a protrusion is provided on the outer periphery of the collar, and is interposed in a gap between the outer periphery of the collar and the inner periphery of the sensor magnet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9137526A JPH10322976A (en) | 1997-05-12 | 1997-05-12 | Rotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9137526A JPH10322976A (en) | 1997-05-12 | 1997-05-12 | Rotor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10322976A true JPH10322976A (en) | 1998-12-04 |
Family
ID=15200747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9137526A Pending JPH10322976A (en) | 1997-05-12 | 1997-05-12 | Rotor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10322976A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014092762A (en) * | 2012-11-06 | 2014-05-19 | Oki Data Corp | Shaft insertion member, connection structure between shaft and shaft insertion member, developing apparatus, and image forming apparatus |
CN104979968A (en) * | 2015-07-07 | 2015-10-14 | 广东威灵电机制造有限公司 | Motor magnetic ring, motor and washing machine |
JP2016226251A (en) * | 2015-05-29 | 2016-12-28 | 日本電産株式会社 | Manufacturing method of rotor core, manufacturing method of rotor, rotor, and motor |
US11316416B2 (en) | 2016-09-30 | 2022-04-26 | Nidec Corporation | Method of manufacturing rotor, rotor, and motor |
-
1997
- 1997-05-12 JP JP9137526A patent/JPH10322976A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014092762A (en) * | 2012-11-06 | 2014-05-19 | Oki Data Corp | Shaft insertion member, connection structure between shaft and shaft insertion member, developing apparatus, and image forming apparatus |
JP2016226251A (en) * | 2015-05-29 | 2016-12-28 | 日本電産株式会社 | Manufacturing method of rotor core, manufacturing method of rotor, rotor, and motor |
CN104979968A (en) * | 2015-07-07 | 2015-10-14 | 广东威灵电机制造有限公司 | Motor magnetic ring, motor and washing machine |
US11316416B2 (en) | 2016-09-30 | 2022-04-26 | Nidec Corporation | Method of manufacturing rotor, rotor, and motor |
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