JPH1189196A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPH1189196A
JPH1189196A JP9246384A JP24638497A JPH1189196A JP H1189196 A JPH1189196 A JP H1189196A JP 9246384 A JP9246384 A JP 9246384A JP 24638497 A JP24638497 A JP 24638497A JP H1189196 A JPH1189196 A JP H1189196A
Authority
JP
Japan
Prior art keywords
stator core
housing
motor
brushless motor
stator
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
Application number
JP9246384A
Other languages
Japanese (ja)
Inventor
Koji Kadowaki
功治 門脇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9246384A priority Critical patent/JPH1189196A/en
Publication of JPH1189196A publication Critical patent/JPH1189196A/en
Pending legal-status Critical Current

Links

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a highly efficient small-sized, high performance brushless motor by improving the structural reliability of a fitted part of a motor. SOLUTION: A stator core 3 is provided with a housing 2 and a winding 5 which hold bearings 11 and 12 which in turn support a freely rotating shaft 6, the housing 2 is provided with a protruding portion 2a on the outside diameter in the fitted portion of a plate 1, the stator core 3 is provided with a recessed portion 3a in the inside diameter of the housing 2, the protruding portion 2a of the housing 2 and the recessed portion 3a of the stator core 3 are engaged and clinched together thereby fixing a stator. This arrangement permits a reduction of the volume of the joined portion of the stator core 3 and the housing 2 and an increase in the volume for winding capacity allowing a greater number of windings so that a highly efficient motor can be obtained. By engaging and locking the recessed and protruding portions of the housing 2 and the stator core 3, it is possible to obtain a motor comprising a rigid detent.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、PPC、プリンタ
ー等のOA機器に使用されるブラシレスモータの構造に
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a brushless motor used for OA equipment such as a PPC and a printer.

【0002】[0002]

【従来の技術】近年、PPC、プリンター等のOA機器
はユーザーニーズに伴い高機能化,小型化の傾向にあ
り、更にパーソナル化により安価で静かな商品が要望さ
れている。このような市場状況にあって、OA機器の駆
動源として使用されるブラシレスモータも高出力,小
型,低価格の商品が要望されている。
2. Description of the Related Art In recent years, OA equipment such as PPCs and printers have been increasing in functionality and miniaturization in response to user needs, and furthermore, personalized personalized low-cost and quiet products have been demanded. Under such market conditions, there is a demand for a high-output, small-sized, and low-priced product for a brushless motor used as a drive source of OA equipment.

【0003】図3は従来のブラシレスモータの構造を示
すものである。図3において、2はハウジングでベアリ
ング軸受11と12を保持する。このハウジング2はプ
レート1にカシメて固定される。また、プレート1には
プリント基板9が取り付けられる。3はステータコア
で、絶縁層4を介して巻線5が巻回されている。ステー
タコア3の中央には穴が、また、前記ハウジング2には
円筒状のステータコア保持部が形成されており、前記ス
テータコアの穴を前記ハウジングのステータコア保持部
に挿入した後、ステータコア3を貫通するネジ10でハ
ウジング2に固定される。
FIG. 3 shows the structure of a conventional brushless motor. In FIG. 3, reference numeral 2 denotes a housing which holds the bearings 11 and 12. The housing 2 is fixed to the plate 1 by caulking. A printed circuit board 9 is attached to the plate 1. Reference numeral 3 denotes a stator core on which a winding 5 is wound via an insulating layer 4. A hole is formed in the center of the stator core 3, and a cylindrical stator core holding portion is formed in the housing 2. After inserting the hole of the stator core into the stator core holding portion of the housing, a screw passing through the stator core 3 is formed. At 10 it is fixed to the housing 2.

【0004】7はロータフレームで、中央に回転軸6が
圧入固定され、ステータコア3の外周と空隙を介して配
置したマグネット8を接着保持する。回転軸6は前記ベ
アリング軸受11及び12の内輪に接着固定される。
Reference numeral 7 denotes a rotor frame, in which a rotating shaft 6 is press-fitted and fixed at the center, and adheres and holds a magnet 8 disposed via a gap with the outer periphery of the stator core 3. The rotating shaft 6 is bonded and fixed to inner rings of the bearings 11 and 12.

【0005】このような従来の構造においては、ステー
タコア3をビス10で固定するので、このビス10の頭
部周辺を避けて巻線5を巻回する必要があり、巻線可能
な範囲に制約があった。
In such a conventional structure, since the stator core 3 is fixed with the screw 10, it is necessary to wind the winding 5 around the head of the screw 10 so that the winding range is limited. was there.

【0006】この解決法として、例えば実開平5ー15
647号公報に開示されているように、ビスを使用せず
ステータコアを固定する方法として、コアの凹部とブラ
ケットの凹部にテーパーピンを圧入して固定する方法が
提案されている。
As a solution to this, for example, Japanese Utility Model Laid-Open No. 5-15
As disclosed in Japanese Patent No. 647, as a method for fixing a stator core without using a screw, a method has been proposed in which a taper pin is press-fitted into a concave portion of a core and a concave portion of a bracket to fix the core.

【0007】[0007]

【発明が解決しようとする課題】しかしながら上記従来
の構成では、コアとブラケットの双方の凹部の位置合わ
せが必要であり、更に、この凹部にテーパーピンを圧入
するので、作業性が悪く部品点数も多いためコスト高と
なるという課題があった。より小型で、より出力が大き
く、効率の良いモータが要求されている。
However, in the above-mentioned conventional structure, it is necessary to align the concave portions of both the core and the bracket, and furthermore, since the tapered pin is press-fitted into this concave portion, the workability is poor and the number of parts is reduced. There was a problem that the cost was high due to the large number. There is a demand for smaller, more powerful, and more efficient motors.

【0008】本発明は、同一体積のブラシレスモータで
あってモータ効率を向上し出力の大きなブラシレスモー
タを構成すると共に、モータ出力が向上することによっ
て、モータ構造上の嵌合部の信頼性をより高いものと
し、小型で高性能なブラシレスモータを提供することを
目的とする。
According to the present invention, a brushless motor having the same volume and improved motor efficiency and having a large output is provided, and the output of the motor is improved, thereby improving the reliability of the fitting portion on the motor structure. An object of the present invention is to provide a small, high-performance brushless motor that is high in cost.

【0009】[0009]

【課題を解決するための手段】この課題を解決するため
に本発明は、ハウジングとステータコアの嵌合部におい
て外径に凸部を有するハウジングと内径に凹部を有する
ステータコアで、ハウジングの凸部とステータコアの凹
部を係合しカシメによって固定するステータ構造を備え
たブラシレスモータとしたものである。
SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a housing having a convex portion on the outside diameter and a stator core having a concave portion on the inside diameter at a fitting portion between the housing and the stator core. This is a brushless motor having a stator structure in which a recess of a stator core is engaged and fixed by caulking.

【0010】これにより巻線が施されたステータコアと
ハウジングをステータコアのハウジング近傍で軸方向に
ビス止め固定する従来の構造に対して、カシメによる固
定方法にすることによってステータコアのハウジングと
の締結に必要な体積を小さくすることができることによ
り、巻線を施すことのできる体積が増大し、同一体積の
モータであってもより多くの巻線が可能となり効率のよ
い出力の大きなモータが得られる。
In contrast to the conventional structure in which the wound stator core and the housing are fixed by screws in the axial direction near the housing of the stator core, the stator core is required to be fastened to the housing by using a caulking fixing method. Since the volume can be reduced, the volume that can be wound is increased, and even if the motor has the same volume, more windings can be performed, and a motor with high efficiency and high output can be obtained.

【0011】[0011]

【発明の実施の形態】本発明の請求項1に記載した発明
は、自在に回転する軸を支持する軸受を保持するハウジ
ングと、巻線が施されたステータコアを有するブラシレ
スモータであって、ハウジングとステータコアの嵌合部
において外径に凸部を有するハウジングと内径に凹部を
有するステータコアで、ハウジングの凸部とステータコ
アの凹部を係合しカシメによって固定するステータ構造
を備えたブラシレスモータとしたものであり、カシメに
よる固定方法にすることによってステータコアのハウジ
ングとの締結に必要な体積を小さくすることができるこ
とにより、巻線を施すことのできる体積が増大し、同一
体積のモータであってもより多くの巻線が可能となり効
率のよい出力の大きなモータが得られる。また、モータ
の出力が大きくなることによってステータコアとハウジ
ング、及びハウジングとプレートの嵌合部において回転
方向に加わる力が大きくなるが、ハウジングとステータ
コアの凹凸部を係合し固定することによって強固な回り
止めを構成する作用を有する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 of the present invention is a brushless motor having a housing for holding a bearing for supporting a freely rotating shaft and a stator core on which windings are provided. A brushless motor having a stator structure in which a housing having a convex portion on the outer diameter and a stator core having a concave portion on the inner diameter at a fitting portion of the stator core and the convex portion of the housing and the concave portion of the stator core are engaged and fixed by caulking. The fixing method by caulking can reduce the volume required for fastening the stator core to the housing, thereby increasing the volume that can be wound, and even if the motor has the same volume. Many windings are possible, and a motor with high efficiency and high output can be obtained. Also, as the output of the motor increases, the force applied in the rotation direction at the fitting portion between the stator core and the housing and between the housing and the plate increases. Has the function of forming a stop.

【0012】[0012]

【実施例】以下本発明の実施例について、図面を参照し
て説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0013】図1は本発明におけるブラシレスモータの
実施例、図2は本発明における実施例のステータコアと
ハウジングの嵌合部の詳細図を示し、図1において3は
内径部に図2の凹部3aを有するステータコアで、絶縁
層4を介して巻線5が施されステータを構成する。2は
ハウジングで外径部に図2の凸部2aを有し、凸部2a
とステータコアの凹部3aと係合しカシメによってステ
ータコアを固定保持するとともに、電子部品を実装した
プリント基板9を保持するプレート1の内径部と係合し
カシメによってプレートを固定保持する。6はロータ軸
で、ステータコア3の外周方向に空隙を介して配置した
マグネット8を接着保持したロータフレーム7に圧入固
定し、ハウジング2に外輪を保持された軸受11及び1
2の内輪に接着固定され、マグネット8の吸引、反発に
よって自在に回転する。
FIG. 1 shows an embodiment of a brushless motor according to the present invention, and FIG. 2 shows a detailed view of a fitting portion between a stator core and a housing according to an embodiment of the present invention. In FIG. And a winding 5 is applied via an insulating layer 4 to form a stator. Reference numeral 2 denotes a housing having a convex portion 2a shown in FIG.
And the stator core is fixedly held by caulking to fix the stator core, and the plate is fixedly held by caulking by engaging with the inner diameter of the plate 1 holding the printed circuit board 9 on which the electronic components are mounted. Numeral 6 denotes a rotor shaft, which is press-fitted and fixed to a rotor frame 7 holding a magnet 8 which is disposed in the outer circumferential direction of the stator core 3 with a gap therebetween through an air gap, and bearings 11 and 1 having an outer ring held by the housing 2.
The magnet 8 is rotatably rotated by suction and repulsion of the magnet 8.

【0014】なお、以上の説明ではハウジング外径に凸
部を構成しステータコアを構成した例で説明したが、そ
の他のハウジングの外径に凹部を構成しステータコアを
構成したブラシレスモータについても同様に実施可能で
ある。
In the above description, an example is described in which the stator core is formed by forming a projection on the outer diameter of the housing. However, the same applies to a brushless motor having a recess formed on the outer diameter of the other housing to form the stator core. It is possible.

【0015】[0015]

【発明の効果】以上のように本発明によれば、カシメに
よる固定方法にすることによってステータコアのハウジ
ングとの締結に必要な体積を小さくすることができるこ
とにより、巻線を施すことのできる体積が増大し、同一
体積のモータであってもより多くの巻線が可能となり効
率のよい出力の大きなモータが構成できるという有利な
効果が得られる。また、モータの出力が大きくなること
によってステータコアとハウジング、及びハウジングと
プレートの嵌合部において回転方向に加わる力が大きく
なるが、ハウジングとステータコア、及びハウジングと
ステータコアのそれぞれの凹凸部を係合し固定すること
によって強固な回り止めを構成するモータが構成できる
という有利な効果が得られる。
As described above, according to the present invention, the volume required for fastening the stator core to the housing can be reduced by using the caulking fixing method. As a result, the number of windings can be increased even with a motor having the same volume, and an advantageous effect that an efficient motor having a large output can be constructed can be obtained. In addition, as the output of the motor increases, the force applied in the rotating direction at the fitting portion between the stator core and the housing and between the housing and the plate increases, but the uneven portions of the housing and the stator core, and the housing and the stator core engage with each other. An advantageous effect is obtained in that by fixing the motor, a motor that forms a strong detent can be formed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例におけるブラシレスモータの説
明図
FIG. 1 is an explanatory diagram of a brushless motor according to an embodiment of the present invention.

【図2】本発明の実施例におけるブラシレスモータの嵌
合部の詳細図
FIG. 2 is a detailed view of a fitting portion of the brushless motor according to the embodiment of the present invention.

【図3】従来の実施例におけるブラシレスモータの説明
FIG. 3 is an explanatory view of a brushless motor in a conventional example.

【符号の説明】[Explanation of symbols]

2 ハウジング 2a ハウジング外径部の凸部 3 ステータコア 3a ステータコア内径部の凹部 5 巻線 6 回転軸 11,12 ベアリング軸受 Reference Signs List 2 housing 2a convex portion of housing outer diameter portion 3 stator core 3a concave portion of stator core inner diameter portion 5 winding 6 rotating shaft 11, 12 bearing bearing

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】回転軸と、この回転軸を回転自在に支承す
る軸受と、この軸受を保持するハウジングと、巻線を施
したステータコアとを有し、このステータコアの中央に
は穴が形成され、前記ハウジングには円筒状のステータ
コア保持部が形成されており、前記ステータコアの穴を
前記ハウジングのステータコア保持部に挿入して保持す
るブラシレスモータであって、前記ハウジングのステー
タコア保持部の外周には凸部を、ステータコアの穴の一
部には凹部を形成し、前記ハウジングの凸部とステータ
コアの凹部を係合して固定するステータ構造を備えたブ
ラシレスモータ。
The present invention has a rotating shaft, a bearing for rotatably supporting the rotating shaft, a housing for holding the bearing, and a stator core having a winding. A hole is formed in the center of the stator core. A brushless motor that has a cylindrical stator core holding portion formed in the housing and that inserts and holds a hole in the stator core into the stator core holding portion of the housing; A brushless motor having a stator structure in which a protrusion is formed in a part of a hole of a stator core, and a recess is formed, and the protrusion of the housing and the recess of the stator core are engaged and fixed.
JP9246384A 1997-09-11 1997-09-11 Brushless motor Pending JPH1189196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9246384A JPH1189196A (en) 1997-09-11 1997-09-11 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9246384A JPH1189196A (en) 1997-09-11 1997-09-11 Brushless motor

Publications (1)

Publication Number Publication Date
JPH1189196A true JPH1189196A (en) 1999-03-30

Family

ID=17147743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9246384A Pending JPH1189196A (en) 1997-09-11 1997-09-11 Brushless motor

Country Status (1)

Country Link
JP (1) JPH1189196A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7420310B2 (en) 2004-11-26 2008-09-02 Matsushita Electric Industries, Co., Ltd. Brushless motor
US8030815B2 (en) 2006-01-06 2011-10-04 Minebea Motor Manufacturing Corporation Brushless motor having improved mounting plate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253250U (en) * 1988-10-11 1990-04-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253250U (en) * 1988-10-11 1990-04-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7420310B2 (en) 2004-11-26 2008-09-02 Matsushita Electric Industries, Co., Ltd. Brushless motor
US8030815B2 (en) 2006-01-06 2011-10-04 Minebea Motor Manufacturing Corporation Brushless motor having improved mounting plate

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