JPH0134536Y2 - - Google Patents
Info
- Publication number
- JPH0134536Y2 JPH0134536Y2 JP1983140652U JP14065283U JPH0134536Y2 JP H0134536 Y2 JPH0134536 Y2 JP H0134536Y2 JP 1983140652 U JP1983140652 U JP 1983140652U JP 14065283 U JP14065283 U JP 14065283U JP H0134536 Y2 JPH0134536 Y2 JP H0134536Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- rotor
- rotor body
- groove
- circumferential direction
- 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
Links
- 238000004512 die casting Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Description
【考案の詳細な説明】
〔技術分野〕
本考案はモータのロータ、殊に回転軸とロータ
本体との結合構造に関するものである。[Detailed Description of the Invention] [Technical Field] The present invention relates to a motor rotor, particularly to a coupling structure between a rotating shaft and a rotor body.
一般にロータＡは、第１図に示すように、回転
軸１にロータ本体４を一体に固定して構成される
ものであつて、従来は回転軸１のロータ本体４と
の結合部分に、第２図に示すような凹所８を形成
したり、第３図に示すように回転軸１の周方向に
沿つて凹凸が交互に連続するローレツト部９を形
成したりすることにより、回転軸１とロータ本体
４との結合力を高めるようにしていた。凹所８を
設けたものにあつては、ロータ本体４の一部が凹
所８に嵌合することにより、ロータ本体４が回転
軸１の軸方向において移動することが防止され、
また凹所８において回転軸１の断面が略Ｄ字状と
なるものであるから、ロータ本体４の回転軸１の
周りでの回転が防止されるものであるが、凹所８
の部分で回転軸１が回転対称な形ではないもので
あるから、この部分に応力が集中しやすく、ロー
タ本体４の外周を切削形成する際などに、回転軸
１とロータ本体４との間でがたつきが生じたり、
回転軸１が曲がつたりする問題があつた。また、
ローレツト部９を設けた場合には回転軸１の周り
で回転対称であり、かつ回転軸１とロータ本体４
との間の接触面積を大きくとれるものであるか
ら、回転軸１の周りでのロータ本体４の回転は防
止されるが、回転軸１の軸方向においては回転軸
１とロータ本体４との間の摩擦結合力に依存して
いるものであるから、軸方向においてはロータ本
体４が位置ずれしやすいという問題があつた。
Generally, the rotor A is constructed by integrally fixing a rotor body 4 to a rotating shaft 1, as shown in FIG. By forming a recess 8 as shown in FIG. 2 or by forming a knurled portion 9 in which concave and convex portions are alternately continuous along the circumferential direction of the rotating shaft 1 as shown in FIG. The coupling force between the rotor body 4 and the rotor body 4 is increased. In the case where a recess 8 is provided, a part of the rotor main body 4 fits into the recess 8, thereby preventing the rotor main body 4 from moving in the axial direction of the rotating shaft 1.
Furthermore, since the cross section of the rotating shaft 1 in the recess 8 is approximately D-shaped, rotation of the rotor body 4 around the rotating shaft 1 is prevented.
Since the rotating shaft 1 is not rotationally symmetrical in this part, stress tends to concentrate in this part, and when cutting the outer circumference of the rotor body 4, etc. Shakiness may occur, or
There was a problem that the rotating shaft 1 was bent. Also,
When the knurled portion 9 is provided, it is rotationally symmetrical around the rotating shaft 1, and the rotating shaft 1 and the rotor body 4 are
Since the contact area between the rotor body 4 and the rotor body 4 is prevented from rotating around the rotating shaft 1, in the axial direction of the rotating shaft 1, the contact area between the rotating shaft 1 and the rotor body 4 is prevented. Since the rotor body 4 is dependent on the frictional coupling force, there is a problem in that the rotor body 4 is easily misaligned in the axial direction.
本考案は上述の問題点に鑑みて為されたもので
あつて、その主な目的とするところは、ロータ本
体が回転軸に対して軸方向へも周方向へも位置ず
れしないように固定されるようにすることにあ
る。
The present invention was developed in view of the above-mentioned problems, and its main purpose is to fix the rotor body to the rotating shaft so that it does not shift in the axial direction or the circumferential direction. The purpose is to make sure that
以下本考案の実施例を図面に基づいて説明す
る。本考案に係るモータのロータは、回転軸１の
一所に周方向の全周に亘る凹溝２が形成されると
ともに、凹溝２を挟む軸方向の両側に夫夫回転軸
１の周方向の全周に亘つて凹凸が交互に連続する
一対のローレツト部３が形成され、ダイキヤスト
により回転軸１に一体に形成されるロータ本体４
の要部が両ローレツト部３と凹溝２とに噛合する
形で回転軸１に固着されているものである。
Embodiments of the present invention will be described below based on the drawings. In the rotor of the motor according to the present invention, a groove 2 extending all the way around the circumferential direction is formed at one place on the rotating shaft 1, and grooves 2 extending in the circumferential direction of the rotary shaft 1 are formed on both sides of the rotating shaft 1 in the axial direction sandwiching the groove 2. A rotor body 4 is formed integrally with the rotating shaft 1 by die casting, and has a pair of knurling portions 3 in which concavities and convexities are alternately continuous over the entire circumference of the rotor body 4.
The main parts thereof are fixed to the rotating shaft 1 in such a manner that they engage with both the knurled parts 3 and the groove 2.
ロータＡは、第５図に示すように、回転軸１に
ロータ本体４を一体に結合したものであつて、ロ
ータ本体４はアルミダイキヤストにより形成され
た取付台４０と、コイル４１が巻装される鉄心４
２とで形成される。取付台４０は、有底円筒状で
あつて、その底壁４３に取付筒４４を有し、この
取付筒４４に回転軸１が挿通される。取付筒４４
の周壁部分には環状に形成された鉄心４２が装着
され、この鉄心４２にコイル４１が巻装される。
取付台４０において鉄心４２とは反対側の面には
ねじ孔４５を有するボス４６が突設され、このね
じ孔４５に螺入されるねじによつてロータＡにフ
アンなどが取着される。このロータ本体４は回転
軸１の一端部を取付筒４４に挿入して回転軸１に
固定されるものであつて、鉄心４２が回転軸１の
他端部周囲に位置するように装着される。回転軸
１は第６図に示すように、その一端部において周
方向の全周に亘る凹溝２が形成されるとともに、
その凹溝２を挟んで回転軸１の軸方向両側には、
回転軸１の周方向全周に亘つて凹凸が交互に連続
する一対のローレツト部３が形成される。上記取
付台４０は両ローレツト部３に跨がる形に回転軸
１と一体に形成されるものであり、取付台４０の
取付筒４４内周面の一所が凹溝２内に食い込むと
ともに、ローレツト部３に噛合することにより、
取付台４０は回転軸１に対して軸方向へも周方向
へも移動が防止される。また、ロータ本体４を回
転軸１に結合させる凹溝２およびローレツト部３
が回転軸１の周りに回転対称に形成されているも
のであるから、ロータＡの回転に伴つて回転軸１
の特定位置に応力が集中することがなく、回転軸
１とロータ本体４との間のがたつきや回転軸１の
変形がないものである。回転軸１の他端部には周
方向の全周に亘る溝１０が形成されており、ここ
には後述する抜け止めリング１１が嵌着される。
ロータＡはケーシング２０に保持されるものであ
つて、ケーシング２０は、第４図に示すように、
有底円筒状に形成される。ケーシング２０の底壁
２１には透孔２２が形成され、底壁２１内側面に
おける透孔２２の周縁から保持筒２３が延設され
る。保持筒２３内には軸受筒２４が装着され、こ
の軸受筒２４にはロータＡの回転軸１が挿入され
る。このとき、ロータＡの鉄心４２は保持筒２３
の周囲に位置する。ロータＡの鉄心４２の外周囲
にはステータ３０の鉄心３１が配設される。ステ
ータ３０の鉄心３１は環状であつて、ケーシング
２０の周壁２５に形成されたねじ孔２６に螺入さ
れるねじ３２によりケーシング２０に固定され
る。この鉄心３１にはコイル３３が巻装されてお
り、ステータ３０のコイル３３に交番電流を流す
ことで、ロータＡのコイル４１に誘導電流が流
れ、この誘導電流によりロータＡが回転する。ロ
ータＡは、取付台４０の底壁４３が保持筒２３の
先端に当接するとともに、回転軸１の一端部に形
成された溝１０に嵌着された抜け止めリング１１
が座板１２を介して軸受筒２４に係止されること
により、軸方向への移動を阻止される。 As shown in FIG. 5, the rotor A has a rotor body 4 integrally connected to a rotating shaft 1, and the rotor body 4 has a mounting base 40 made of aluminum die casting and a coil 41 wound around iron core 4
It is formed by 2. The mounting base 40 has a cylindrical shape with a bottom and has a mounting cylinder 44 on its bottom wall 43, into which the rotating shaft 1 is inserted. Mounting tube 44
An annularly formed iron core 42 is attached to the peripheral wall portion of the iron core 42, and a coil 41 is wound around the iron core 42.
A boss 46 having a screw hole 45 is projectingly provided on the surface of the mounting base 40 opposite to the iron core 42, and a fan or the like is attached to the rotor A by a screw inserted into the screw hole 45. The rotor body 4 is fixed to the rotating shaft 1 by inserting one end of the rotating shaft 1 into a mounting tube 44, and is mounted so that the iron core 42 is positioned around the other end of the rotating shaft 1. . As shown in FIG. 6, the rotating shaft 1 has a concave groove 2 formed at one end thereof extending all the way around in the circumferential direction.
On both sides of the rotating shaft 1 in the axial direction with the concave groove 2 in between,
A pair of knurling portions 3 are formed in which concave and convex portions alternately continue over the entire circumference of the rotating shaft 1 in the circumferential direction. The mounting base 40 is formed integrally with the rotating shaft 1 so as to straddle both knurled portions 3, and a part of the inner circumferential surface of the mounting cylinder 44 of the mounting base 40 bites into the groove 2. By engaging with the knurled portion 3,
The mounting base 40 is prevented from moving both in the axial direction and the circumferential direction with respect to the rotating shaft 1. Also, a groove 2 and a knurling portion 3 for connecting the rotor body 4 to the rotating shaft 1 are provided.
are formed rotationally symmetrically around the rotational axis 1, so as the rotor A rotates, the rotational axis 1
Stress is not concentrated at a specific position, and there is no rattling between the rotating shaft 1 and the rotor body 4 and no deformation of the rotating shaft 1. A groove 10 extending all the way around the circumference is formed at the other end of the rotating shaft 1, into which a retaining ring 11, which will be described later, is fitted.
The rotor A is held in a casing 20, and the casing 20 has, as shown in FIG.
It is formed into a cylindrical shape with a bottom. A through hole 22 is formed in the bottom wall 21 of the casing 20, and a holding cylinder 23 is extended from the periphery of the through hole 22 on the inner surface of the bottom wall 21. A bearing cylinder 24 is mounted inside the holding cylinder 23, and the rotating shaft 1 of the rotor A is inserted into this bearing cylinder 24. At this time, the iron core 42 of the rotor A is
located around. The iron core 31 of the stator 30 is disposed around the outer periphery of the iron core 42 of the rotor A. The iron core 31 of the stator 30 is annular and is fixed to the casing 20 by screws 32 that are screwed into screw holes 26 formed in the peripheral wall 25 of the casing 20. A coil 33 is wound around this iron core 31, and by passing an alternating current through the coil 33 of the stator 30, an induced current flows through the coil 41 of the rotor A, and the rotor A rotates due to this induced current. The rotor A has a bottom wall 43 of a mounting base 40 in contact with the tip of the holding cylinder 23, and a retaining ring 11 fitted in a groove 10 formed at one end of the rotating shaft 1.
is locked to the bearing sleeve 24 via the seat plate 12, thereby preventing movement in the axial direction.
本考案は上述のように、ロータの回転軸上に周
方向の全周に亘る凹溝が形成されるとともに、凹
溝を挟む軸方向両側に周方向の全周に亘つて凹凸
が交互に連続する一対のローレツト部が形成さ
れ、ダイキヤストにより回転軸に一体に形成され
るロータ本体の要部が両ローレツト部と凹溝とに
噛合する形で回転軸に固着されているので、凹溝
とロータ本体との嵌合により、ロータ本体の回転
軸に対しての軸方向への移動が防止され、ローレ
ツト部とロータ本体との噛合により、ロータ本体
の回転軸に対しての周方向への移動が防止され、
その結果、ロータ本体と回転軸との結合が強固に
行なわれるという利点を有する。しかも、ローレ
ツト部と凹溝とが回転軸の周方向の全周に亘つて
形成されているから、ダイナミツクバランスがよ
く回転軸の軸振れが防止できるのである。さら
に、ロータ本体において回転軸に結合される部位
がダイキヤストにより回転軸に一体に形成されて
いるから、ローレツト部とに合成樹脂のブツシユ
等を回転軸に固着してロータ本体を回転軸に結合
している場合等に比較して結合強度が高くなり、
ローレツト部と凹溝とにロータ本体が噛合してい
ることとあいまつて、回転軸の軸方向への抜け止
め強度と周方向への回り止め強度とが非常に高く
なるのである。
As mentioned above, in this invention, a concave groove is formed on the rotating shaft of the rotor over the entire circumferential circumference, and concavities and convexities are alternately continuous throughout the circumferential direction on both sides of the concave groove in the axial direction. A pair of knurling parts are formed, and the main part of the rotor body, which is formed integrally with the rotating shaft by die-casting, is fixed to the rotating shaft in a manner that meshes with both knurling parts and the groove. Fitting with the main body prevents the rotor main body from moving in the axial direction with respect to the rotation axis, and engagement between the knurling part and the rotor main body prevents the rotor main body from moving in the circumferential direction with respect to the rotation axis. prevented,
As a result, there is an advantage that the rotor body and the rotating shaft are firmly connected. Moreover, since the knurled portion and the groove are formed all around the circumferential direction of the rotary shaft, the dynamic balance is good and axial runout of the rotary shaft can be prevented. Furthermore, since the portion of the rotor body that is connected to the rotating shaft is formed integrally with the rotating shaft by die casting, it is possible to connect the rotor body to the rotating shaft by fixing a synthetic resin bushing or the like to the knurled portion. The bond strength is higher than when
Coupled with the fact that the rotor body is engaged with the knurled portion and the groove, the strength to prevent the rotary shaft from coming off in the axial direction and the strength to prevent rotation in the circumferential direction are extremely high.
第１図は従来例を示す断面図、第２図および第
３図は夫々従来の回転軸の例を示す正面図、第４
図は本考案を用いたモータの一例を示す部分切欠
正面図、第５図は本考案の一実施例を示す正面
図、第５図は本考案の一実施例を示す正面図、第
６図は同上に用いる回転軸を示す正面図である。
１は回転軸、２は凹溝、３はローレツト部、４
はロータ本体である。
FIG. 1 is a sectional view showing a conventional example, FIGS. 2 and 3 are front views showing an example of a conventional rotating shaft, and FIG.
The figure is a partially cutaway front view showing an example of a motor using the present invention, FIG. 5 is a front view showing an embodiment of the present invention, FIG. 5 is a front view showing an embodiment of the present invention, and FIG. FIG. 2 is a front view showing a rotating shaft used in the same as above. 1 is the rotating shaft, 2 is the concave groove, 3 is the knurling part, 4
is the rotor body.
Claims (1)
されるとともに、凹溝を挟む軸方向の両側に夫夫
回転軸の周方向の全周に亘つて凹凸が交互に連続
する一対のローレツト部が形成され、ダイキヤス
トにより回転軸に一体に形成されるロータ本体の
要部が両ローレツト部と凹溝とに噛合する形で回
転軸に固着されて成るモータのロータ。 A concave groove is formed at one place on the rotating shaft and extends all the way around the circumferential direction, and a pair of concave and convex portions are alternately continuous all the way around the circumferential direction of the rotating shaft on both sides of the concave groove in the axial direction. A rotor for a motor, in which a main part of a rotor body, which is formed integrally with the rotating shaft by die casting, is fixed to the rotating shaft in a manner that meshes with both knurling parts and a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14065283U JPS6048344U (en) | 1983-09-10 | 1983-09-10 | motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14065283U JPS6048344U (en) | 1983-09-10 | 1983-09-10 | motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6048344U JPS6048344U (en) | 1985-04-05 |
| JPH0134536Y2 true JPH0134536Y2 (en) | 1989-10-20 |
Family
ID=30314836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14065283U Granted JPS6048344U (en) | 1983-09-10 | 1983-09-10 | motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048344U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7101584B2 (en) * | 2018-10-05 | 2022-07-15 | 株式会社マキタ | Electric gardening tools |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5442401U (en) * | 1977-08-30 | 1979-03-22 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52140101U (en) * | 1976-04-19 | 1977-10-24 | ||
| JPS55153858U (en) * | 1979-04-20 | 1980-11-06 |
-
1983
- 1983-09-10 JP JP14065283U patent/JPS6048344U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5442401U (en) * | 1977-08-30 | 1979-03-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6048344U (en) | 1985-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0134536Y2 (en) | ||
| JP2543173Y2 (en) | Brushless resolver mounting structure | |
| JPH01157273U (en) | ||
| JPH0452064B2 (en) | ||
| JPH0237251Y2 (en) | ||
| JPH055815Y2 (en) | ||
| JP2584369Y2 (en) | Resin bearing device | |
| WO2020110604A1 (en) | Motor | |
| JP3031797U (en) | Electric motor with gear | |
| JPS6213419Y2 (en) | ||
| JP2523808Y2 (en) | Eccentric rolling bearing | |
| JPS6011748Y2 (en) | coreless motor | |
| JPS6324966U (en) | ||
| JPS60132175U (en) | Outer rotor type motor | |
| JP2676369B2 (en) | Brushless motor | |
| JPH0345062U (en) | ||
| JP2604522Y2 (en) | Motor rotor fixing structure | |
| JPS588992Y2 (en) | electromagnetic clutch | |
| JP2544377Y2 (en) | Pulley with sensor detection protrusion | |
| JPH0361128B2 (en) | ||
| JPH0265062U (en) | ||
| JPH0314941Y2 (en) | ||
| JPS6448439U (en) | ||
| JPH01113567U (en) | ||
| JPH05252696A (en) | Electric rotating machine |