JPH0528925Y2 - - Google Patents
Info
- Publication number
- JPH0528925Y2 JPH0528925Y2 JP1985061322U JP6132285U JPH0528925Y2 JP H0528925 Y2 JPH0528925 Y2 JP H0528925Y2 JP 1985061322 U JP1985061322 U JP 1985061322U JP 6132285 U JP6132285 U JP 6132285U JP H0528925 Y2 JPH0528925 Y2 JP H0528925Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- iron core
- motor
- core
- rotating shaft
- 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 - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 33
- 238000010030 laminating Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Description
【考案の詳細な説明】
〔技術分野〕
この考案は片持ち軸受形式とした小型直流モー
タ等のモータに関するものである。[Detailed Description of the Invention] [Technical Field] This invention relates to a motor such as a small DC motor having a cantilever bearing type.
従来、片持軸受形式のモータとして第７図に示
すものがある。このモータは、ロータ１００の鉄
心４０の片面に凹部４１を形成して軸受４２の先
端を挿入し、これにより薄形化を図つている。軸
受４２は、ケース４３の底部に立設してあり、ロ
ータ１００の回転軸４４を片持ち支持している。
４５はコイル、４６は整流子、４７は刷子であ
る。刷子４７は、ケース４３に固定した刷子板４
８に取付けてある。４９はマグネツトであり、ケ
ース４３の内面に固定されている。
Conventionally, there is a motor shown in FIG. 7 as a cantilever bearing type motor. This motor is made thinner by forming a recess 41 on one side of the iron core 40 of the rotor 100 into which the tip of the bearing 42 is inserted. The bearing 42 is provided upright at the bottom of the case 43 and supports the rotating shaft 44 of the rotor 100 in a cantilevered manner.
45 is a coil, 46 is a commutator, and 47 is a brush. The brush 47 is a brush plate 4 fixed to the case 43.
It is attached to 8. A magnet 49 is fixed to the inner surface of the case 43.
しかし、この構成によると、ロータ１００の重
心が軸受４２の長さ範囲よりも先端側に外れ、ま
た軸受４２の長さ範囲内に位置したとしても先端
近傍位置となる。そのため、回転軸４４が軸受４
２の端部を支点として円錐状の運動を行なうこと
になり、軸受４２の異常摩耗が発生したり、振動
が大きくなつたりする。 However, with this configuration, the center of gravity of the rotor 100 deviates from the length range of the bearing 42 toward the tip side, and even if it is located within the length range of the bearing 42, it will be located near the tip end. Therefore, the rotating shaft 44 is
This results in a conical movement using the end of the bearing 42 as a fulcrum, which may cause abnormal wear of the bearing 42 or increase vibration.
これを改良するものとして、第８図に示すモー
タを提案した。このモータは、鉄心４０′の全体
を軸受４２の長さ範囲内に位置させ、整流子４
６′の基台４６ａを軸受４２の外周まで延出させ
て、この延出部分に鉄心を固定している。 To improve this, we proposed the motor shown in Fig. 8. In this motor, the entire iron core 40' is located within the length range of the bearing 42, and the commutator 40' is located within the length range of the bearing 42.
The base 46a of the bearing 6' is extended to the outer periphery of the bearing 42, and the iron core is fixed to this extended portion.
しかし、整流子４６′の基台４６ａは合成樹脂
の成形品であるため、延出部分の肉厚を厚くしな
ければ鉄心４０′の保持強度を確保できない。そ
のため、鉄心４０′の外径が大きくなつて、モー
タ全体の外径が大きくなるという問題があつた。 However, since the base 46a of the commutator 46' is a molded product of synthetic resin, the holding strength of the iron core 40' cannot be ensured unless the wall thickness of the extending portion is increased. Therefore, there was a problem in that the outer diameter of the iron core 40' became larger, and the outer diameter of the entire motor became larger.
この考案は、小型化が図れ、かつ軸受の異常摩
耗が生じず、長寿命が得られるモータを提供する
ことを目的とする。
The purpose of this invention is to provide a motor that can be miniaturized, does not cause abnormal bearing wear, and has a long life.
この考案のモータは、モータケースの底部から
立設した軸受で回転軸を支持し、前記軸受の外周
に遊嵌させて鉄心を設け、この鉄心の軸受先端側
の端面から一体に突出した筒部を、前記回転軸の
軸受から突出した部分に固着したものである。
In the motor of this invention, a rotating shaft is supported by a bearing installed upright from the bottom of a motor case, an iron core is loosely fitted around the outer periphery of the bearing, and a cylindrical portion integrally protrudes from the end face of the iron core on the tip side of the bearing. is fixed to a portion of the rotating shaft protruding from the bearing.
この構成によると、鉄心が軸受の外周に位置す
るので、ロータの重心が軸受の長さ範囲の中間部
に位置する。そのため、回転軸が円錐運動となら
ず、軸受の広い範囲で均等に支持でき、異常摩耗
が防止される。したがつて、長寿命となる。ま
た、鉄心から一体に突設した筒部で鉄心と回転軸
とを固着しているため、固定が強固となる。しか
も、鉄心の内周に従来のように肉厚の厚い樹脂部
材が挿入されないので、鉄心の外径が小さくな
り、モータ全体が小型化される。 According to this configuration, since the iron core is located on the outer periphery of the bearing, the center of gravity of the rotor is located in the middle of the length range of the bearing. Therefore, the rotating shaft does not move in a conical manner, and the bearing can be evenly supported over a wide range, thereby preventing abnormal wear. Therefore, it has a long life. Further, since the iron core and the rotating shaft are fixed to each other by the cylindrical portion that is integrally provided from the iron core, the fixation becomes strong. Moreover, since a thick resin member is not inserted into the inner periphery of the iron core as in the conventional case, the outer diameter of the iron core is reduced and the entire motor is miniaturized.
実施例
この考案の一実施例のモータを組込んだ送風機
を、第１図ないし第５図に示す。このモータは、
第１図に示すように、モータケース１の底部から
立設した軸受２でロータＡの回転軸３を片持ち支
持し、軸受２の外周に遊嵌させて鉄心４を設け、
この鉄心４の一端面から突出させた筒部４ａを、
回転軸３の軸受２から突出した部分に固着したも
のである。１３は鉄心４に巻付けたコイルであ
る。筒部４ａには整流子５を外嵌させてある。整
流子５に摺接する刷子６は、刷子板７に取付けて
ある。刷子板７は、ヨーク８とマグネツト９とと
もにモータケース１に固定されている。回転軸３
の先端にはブツシユ１０を介してフアン１１が取
付けてある。フアン１１は、モータケース１を固
定した送風機ハウジング１２に収納してある。モ
ータケース１は送風機ハウジング１２と一体に成
形してもよい。送風機ハウジング１２は、第５図
のように取付孔１３を有する。Embodiment A blower incorporating a motor according to an embodiment of this invention is shown in FIGS. 1 to 5. This motor is
As shown in FIG. 1, a rotating shaft 3 of a rotor A is cantilever-supported by a bearing 2 that stands up from the bottom of a motor case 1, and an iron core 4 is provided by loosely fitting it around the outer periphery of the bearing 2.
The cylindrical portion 4a protruding from one end surface of this iron core 4 is
It is fixed to a portion of the rotating shaft 3 that protrudes from the bearing 2. 13 is a coil wound around the iron core 4. A commutator 5 is fitted onto the cylindrical portion 4a. A brush 6 that comes into sliding contact with the commutator 5 is attached to a brush plate 7. The brush plate 7 is fixed to the motor case 1 together with a yoke 8 and a magnet 9. Rotating axis 3
A fan 11 is attached to the tip of the fan 11 via a bush 10. The fan 11 is housed in a blower housing 12 to which the motor case 1 is fixed. The motor case 1 may be integrally molded with the blower housing 12. The blower housing 12 has a mounting hole 13 as shown in FIG.
第２図はロータＡの分解斜視図である。ロータ
Ａの構造を組立手順とともに説明する。まず、回
転軸３に鉄心４の一部となる磁性材料の端部鉄心
板１５を圧入する。端部鉄心板１５は筒部４ａお
よび位置決め片１６が一体に形成されている。次
に、複数枚の鉄心板を積層して構成した鉄心板積
層体１７の切欠１８に、端部鉄心板１５の位置決
め片１６を嵌合して固定し、その後第３図および
第４図のように、合成樹脂１９で鉄心４のスロツ
ト部２０をモールドする。これにより、絶縁被覆
するとともに、鉄心４の端部鉄心板１５と鉄心板
積層体１７との固定を強固にする。そして、筒部
４ａの外周に整流子５を圧入して、ロータＡが完
成する。このロータＡを、第１図のように、モー
タケース１の軸受２に挿入し、フアン１１を取付
ける。 FIG. 2 is an exploded perspective view of the rotor A. The structure of rotor A will be explained along with the assembly procedure. First, an end core plate 15 made of a magnetic material that will become a part of the core 4 is press-fitted into the rotating shaft 3 . The end core plate 15 has a cylindrical portion 4a and a positioning piece 16 integrally formed. Next, the positioning pieces 16 of the end core plates 15 are fitted into the notches 18 of the core plate laminate 17 constructed by laminating a plurality of core plates, and then fixed. As shown, the slot portion 20 of the iron core 4 is molded with the synthetic resin 19. As a result, the end core plates 15 of the core 4 and the core plate laminate 17 are firmly fixed to each other while being insulated. Then, the commutator 5 is press-fitted onto the outer periphery of the cylindrical portion 4a, and the rotor A is completed. This rotor A is inserted into the bearing 2 of the motor case 1 as shown in FIG. 1, and the fan 11 is attached.
この構成によると、鉄心４が軸受２の外周に位
置するので、ロータＡの重心が軸受２の長さ範囲
の中間部に位置する。そのため、回転軸３が円錐
運動とならず、軸受２の広い範囲で均等に支持で
き、異常摩耗が防止される。したがつて、長寿命
となる。また、鉄心４から一体に突設した筒部４
ａで鉄心４と回転軸３とを固着しているため、固
定が強固となる。しかも、鉄心４の内周に従来の
ように肉厚の厚い樹脂部材が挿入されないので、
鉄心４の外径が小さくなり、モータ全体が小型化
される。しかも、筒部４ａは磁路として利用でき
るため、モータの性能も向上する。また鉄心４
は、複数枚の鉄心板を積層して構成し外周面に軸
方向に延びた複数の切欠１８を形成した鉄心板積
層体１７と、この鉄心板積層体１７の端部鉄心板
１５に筒部４ａを設けるとともに切欠１８に嵌着
する位置決め片１６を設けたため、鉄心４の回転
のずれ止めとなるとともに、磁気特性に影響を与
えないで鉄心４の固定が可能になる。第６図は他
の実施例を示す。この例は、端部鉄心板１５′に
形成した位置決め片１６′を、鉄心板積層体１７
のスロツト部２０に係合させるようにしたもので
ある。その他は第１の実施例と同様である。 According to this configuration, since the iron core 4 is located on the outer periphery of the bearing 2, the center of gravity of the rotor A is located in the middle of the length range of the bearing 2. Therefore, the rotating shaft 3 does not undergo conical motion, can be evenly supported over a wide range of the bearing 2, and abnormal wear is prevented. Therefore, it has a long life. In addition, a cylindrical portion 4 integrally protrudes from the iron core 4.
Since the iron core 4 and the rotating shaft 3 are fixed at point a, the fixation is strong. Moreover, since a thick resin member is not inserted into the inner periphery of the iron core 4 as in the conventional case,
The outer diameter of the iron core 4 is reduced, and the entire motor is miniaturized. Moreover, since the cylindrical portion 4a can be used as a magnetic path, the performance of the motor is also improved. Also iron core 4
The core plate laminate 17 is constructed by laminating a plurality of iron core plates and has a plurality of notches 18 extending in the axial direction on the outer circumferential surface, and a cylindrical portion is provided on the end core plate 15 of the iron core plate laminate 17. 4a as well as the positioning piece 16 that fits into the notch 18, the rotation of the iron core 4 is prevented from shifting, and the iron core 4 can be fixed without affecting the magnetic properties. FIG. 6 shows another embodiment. In this example, the positioning piece 16' formed on the end core plate 15' is connected to the core plate laminate 17'.
It is adapted to be engaged with the slot portion 20 of. The rest is the same as the first embodiment.
この考案のモータは、鉄心から一体に突設した
筒部で鉄心と回転軸とを固定しているため、従来
の合成樹脂の整流子基台を介して固定するものと
異なり、固定が強固であり、また鉄心の外径が小
さくできてモータ全体の小型化が図れる。しか
も、鉄心は軸受の外周に遊嵌するので、ロータの
重心が軸受の端部に片寄らず、異常摩耗がなくて
長寿命となるという効果がある。
The motor of this invention fixes the core and rotating shaft with a cylindrical part that protrudes integrally from the core, so unlike conventional motors that are fixed via a synthetic resin commutator base, the fixation is strong. In addition, the outer diameter of the iron core can be reduced, making the entire motor more compact. Moreover, since the iron core is loosely fitted around the outer periphery of the bearing, the center of gravity of the rotor is not biased toward the end of the bearing, and there is no abnormal wear, resulting in a long life.
第１図はこの考案の一実施例のモータを組込ん
だ送風機の断面図、第２図はそのロータの分解斜
視図、第３図は同じくそのロータの組立途中の斜
視図、第４図は第３図の−線断面図、第５図
は同じくその送風機の外観斜視図、第６図は他の
実施例におけるロータの分解斜視図、第７図は従
来例の破断側面図、第８図は他の従来例の破断側
面図である。
１……モータケース、２……軸受、３……回転
軸、４……鉄心、４ａ……筒部、５……整流子、
７……刷子板、８……ヨーク、９……マグネツ
ト、１１……フアン、１３……コイル、１５……
端部鉄心板。
Figure 1 is a sectional view of a blower incorporating a motor according to an embodiment of this invention, Figure 2 is an exploded perspective view of its rotor, Figure 3 is a perspective view of the rotor in the middle of assembly, and Figure 4 is 3 is a cross-sectional view taken along the line 3, FIG. 5 is an external perspective view of the blower, FIG. 6 is an exploded perspective view of the rotor in another embodiment, FIG. 7 is a cutaway side view of the conventional example, and FIG. 8 is a cutaway side view of another conventional example. 1...Motor case, 2...Bearing, 3...Rotating shaft, 4...Iron core, 4a...Cylinder part, 5...Commutator,
7...Brush plate, 8...Yoke, 9...Magnet, 11...Fan, 13...Coil, 15...
End core plate.
Claims (1)
支持した軸受と、この軸受の外周に遊嵌した鉄
心と、この鉄心の前記軸受先端側の端面から一
体に突設されて前記回転軸の前記軸受から突出
した部分に固着された筒部とを備えたモータ。 (2) 前記鉄心は、複数枚の鉄心板を積層して構成
し外周面に軸方向に延びた複数の切欠を形成し
た鉄心板積層体と、この鉄心板積層体の端部鉄
心板に前記筒部を設けるとともに前記切欠に嵌
着する位置決め片を設けた実用新案登録請求の
範囲第(1)項記載のモータ。[Scope of Claim for Utility Model Registration] (1) A bearing that stands up from the bottom of the motor case and supports the rotating shaft, an iron core loosely fitted around the outer periphery of this bearing, and an integral part from the end face of the iron core on the tip side of the bearing. a cylindrical portion protruding from the shaft and fixed to a portion of the rotating shaft protruding from the bearing. (2) The iron core includes a core plate laminate that is constructed by laminating a plurality of iron core plates and has a plurality of notches extending in the axial direction on the outer circumferential surface, and an end core plate of this core plate laminate that has the The motor according to claim (1), which is a registered utility model, is provided with a cylindrical portion and a positioning piece that fits into the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985061322U JPH0528925Y2 (en) | 1985-04-24 | 1985-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985061322U JPH0528925Y2 (en) | 1985-04-24 | 1985-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61176952U JPS61176952U (en) | 1986-11-05 |
| JPH0528925Y2 true JPH0528925Y2 (en) | 1993-07-26 |
Family
ID=30589492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985061322U Expired - Lifetime JPH0528925Y2 (en) | 1985-04-24 | 1985-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528925Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010044416A1 (en) | 2008-10-14 | 2010-04-22 | 株式会社ジェイテクト | Electric pump unit |
| JP5577584B2 (en) * | 2008-11-07 | 2014-08-27 | 株式会社ジェイテクト | Electric pump unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990253U (en) * | 1982-12-08 | 1984-06-19 | キヤノン株式会社 | rotating electric machine |
-
1985
- 1985-04-24 JP JP1985061322U patent/JPH0528925Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61176952U (en) | 1986-11-05 |
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