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JP4645879B2 - motor - Google Patents
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JP4645879B2 - motor - Google Patents

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Publication number
JP4645879B2
JP4645879B2 JP2004079523A JP2004079523A JP4645879B2 JP 4645879 B2 JP4645879 B2 JP 4645879B2 JP 2004079523 A JP2004079523 A JP 2004079523A JP 2004079523 A JP2004079523 A JP 2004079523A JP 4645879 B2 JP4645879 B2 JP 4645879B2
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Prior art keywords
load
bearing
outer ring
adhesive
housing portion
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Expired - Fee Related
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JP2005269785A (en
Inventor
孝浩 深川
尚剛 吉澤
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Yaskawa Electric Corp
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Yaskawa Electric Corp
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  • Motor Or Generator Frames (AREA)

Description

本発明は、予圧をかけた軸受を有するモータに関するもので、特に軸受支持構造に関するものである。   The present invention relates to a motor having a preloaded bearing, and more particularly to a bearing support structure.

従来のモータの軸受支持構造は、回転軸のガタ防止と軸受の長寿命化のため軸受の内輪は焼きバメ等による固定を行い、外輪は一方を機械的に固定または接着固定し、一方にはバネなどを用いてアキシャル方向に適正な予圧をかけて接着固定している。(例えば、特許文献1参照)。
図3は、従来のモータ構成を示す側断面図である。
図3において、1は回転軸1aを有する回転子、2は固定子巻線2aを装着するとともに樹脂モールドを施した固定子である。3,4は負荷側および反負荷側軸受で、内輪は回転軸1aに焼きバメ固定している。5,6は負荷側および反負荷側ブラケットで、中心に軸受ハウジング部5a,6aを備えており、固定子2に取付けられている。7は波形バネである。負荷側軸受3の外輪は負荷側ブラケット5のハウジング部にカバーで機械固定されている。反負荷側軸受4の外輪はハウジングとはわずかな隙間を有しており、この外輪端面と反負荷側ブラケット6のハウジング端部の間に波形バネ7を設けて、このバネ圧で軸受に予圧を与えながらで、外輪を接着固定している。
特開2003−97551号公報(図2)
In the conventional motor bearing support structure, the inner ring of the bearing is fixed by shrinkage in order to prevent backlash of the rotating shaft and prolong the life of the bearing. Adhesive fixing is performed by applying an appropriate preload in the axial direction using a spring or the like. (For example, refer to Patent Document 1).
FIG. 3 is a sectional side view showing a conventional motor configuration.
In FIG. 3, reference numeral 1 denotes a rotor having a rotating shaft 1a, and 2 denotes a stator on which a stator winding 2a is mounted and resin molded. Reference numerals 3 and 4 denote load-side and anti-load-side bearings, and the inner ring is fixed by shrinkage to the rotary shaft 1a. Reference numerals 5 and 6 denote load-side and anti-load-side brackets, which are provided with bearing housing portions 5 a and 6 a at the center and are attached to the stator 2. 7 is a wave spring. The outer ring of the load side bearing 3 is mechanically fixed to the housing portion of the load side bracket 5 with a cover. The outer ring of the anti-load side bearing 4 has a slight clearance from the housing, and a wave spring 7 is provided between the outer ring end surface and the housing end of the anti-load side bracket 6, and the spring pressure preloads the bearing. The outer ring is bonded and fixed while giving
Japanese Patent Laying-Open No. 2003-97551 (FIG. 2)

しかしながら、このような従来技術においては、次のような問題があった。
・ 軸受外輪を接着するために予め軸受外輪もしくはこれに嵌めあうハウジングに接着剤を塗布して組立てるために、軸受を軸受ハウジングに挿入する際に、途中で接着剤が硬化してしまう。
・ 軸受と軸受ハウジングの引っ掛かりが発生して、バネによる適正予圧が掛からないで過剰な予圧状態で組立てられるおそれがある。
本発明は、このような問題を解決するためになされたもので、軸受に対し安定した予圧をかけながら軸受の長寿命化とクリープ防止することができるモータを提供することを目的とするものである。
However, such conventional techniques have the following problems.
In order to bond the outer ring of the bearing and apply the adhesive to the outer ring of the bearing or the housing fitted to the outer ring in advance, the adhesive hardens in the middle when the bearing is inserted into the bearing housing.
・ There is a risk that the bearing and the bearing housing will be caught, and that the preload will not be applied properly by the spring and will be assembled in an excessive preload state.
The present invention has been made to solve such problems, and it is an object of the present invention to provide a motor capable of extending the life of the bearing and preventing creep while applying a stable preload to the bearing. is there.

上記問題を解決するため、本発明は、次のように構成したものである。
請求項1に記載の発明は、固定子巻線が装着された固定子と、軸受ハウジング部を有し、前記固定子の軸方向両側に設けられた負荷側ブラケットおよび反負荷側ブラケットと、弾性体の反発力で外輪に与圧をかけられた状態で前記反負荷側ブラケットの前記軸受ハウジング部に組み込まれた反負荷側軸受と、前記反負荷側軸受に回転自在に支持された回転軸を有する回転子と、前記反負荷側ブラケットに、前記回転軸のための穴とは別に設けられ、かつ、前記反負荷側軸受と前記反負荷側ブラケットの前記軸受ハウジング部とを目視できる位置に設けられた接着剤注入用穴と、前記外輪が接する前記軸受ハウジング部の内周面に円周方向に形成され、前記接着剤注入用穴に連通する溝と、前記外輪と前記軸受ハウジング部間に前記接着剤注入用穴から注入された接着剤と、を備え、前記接着剤注入用穴から前記反負荷側軸受が引っ掛かり等なく組み込まれていることを確認した上で前記接着剤を注入し、前記外輪を固定したものである。
In order to solve the above problems, the present invention is configured as follows.
According to the first aspect of the present invention, there is provided a stator having a stator winding mounted thereon, a bearing housing portion, a load-side bracket and an anti-load-side bracket provided on both sides in the axial direction of the stator, elastic An anti-load-side bearing incorporated in the bearing housing portion of the anti-load-side bracket in a state where pressure is applied to the outer ring by the repulsive force of the body, and a rotating shaft rotatably supported by the anti-load-side bearing The rotor having the rotor and the anti-load side bracket are provided separately from the hole for the rotating shaft, and the anti-load side bearing and the bearing housing portion of the anti-load side bracket are provided at a position where they can be visually observed. An adhesive injection hole, a groove formed in a circumferential direction on the inner peripheral surface of the bearing housing portion with which the outer ring contacts, and communicated with the adhesive injection hole, and between the outer ring and the bearing housing portion. Adhesive injection And an adhesive injected from the hole, the said adhesive after confirming that the adhesive injection from said hole counter load side bearing is built without such caught injected, fixing the outer ring It is a thing.

本発明によれば、次のような効果がある。
請求項1に記載の発明によると、軸受に適正な予圧をかけた状態でモータを組み立てた後で、反負荷側ブラケットに設けた穴から接着剤を注入することができ、接着硬化前に軸受の引っ掛かり等の組立て不具合が容易に確認することが可能になり、信頼性向上を図ることができる。
さらに、請求項に記載の発明によると、注入した接着剤が軸受外輪全周に行き渡り硬化させることができる。また、接着剤の注入量はディスペンサ等による塗布で量管理することで安定した硬化が望め、クリープ防止の信頼性を向上することができる。
The present invention has the following effects.
According to the first aspect of the present invention, after assembling the motor in a state where an appropriate preload is applied to the bearing, the adhesive can be injected from the hole provided in the anti-load side bracket. As a result, it is possible to easily check for assembly problems such as hooking, and improve reliability.
Furthermore , according to the first aspect of the present invention, the injected adhesive can be spread over the entire circumference of the bearing outer ring and cured. Further, the amount of adhesive injected can be controlled by application with a dispenser or the like, so that stable curing can be expected, and the reliability of creep prevention can be improved.

以下、本発明の実施例を図に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図1は、本発明の実施例におけるモータを示す側断面図で、図2は、本発明の実施例における反負荷側ブラケットを反負荷側から見た正面図である。
図において、1は回転軸1aを有する回転子、2は固定子巻線2aを装着するとともに樹脂モールドを施した固定子である。3,4は負荷側および反負荷側軸受で、内輪は回転軸1aに焼きバメ固定している。5,6は負荷側および反負荷側ブラケットで、中心に軸受ハウジング5a,6aを備えており、固定子2に取付けられている。7は波形バネである。負荷側軸受3の外輪は負荷側ブラケット5のハウジング部にカバーで機械固定されている。反負荷側軸受4の外輪はハウジングとはわずかな隙間を有しており、この外輪端面と反負荷側ブラケット6のハウジング端部の間に波形バネ7を設けて、このバネ圧で軸受に予圧を与えている。8は接着剤注入用穴で、反負荷側軸受4と反負荷側ブラケット6の軸受ハウジング部6aが目視できる位置に設けている。前記軸受ハウジング部6aの内周面には円周方向に接着剤浸透用溝9を構成している。接着剤注入用穴8は、この接着剤浸透用溝9に貫通している。
上記構成において、モータを組立てた後、接着剤注入用穴8から反負荷側軸受4が引っ掛かり等なく組み込まれていることを確認した上で接着剤を注入し、反負荷側軸受4の外輪を固定するものである。
本発明が特許文献1と異なる部分は、反負荷側ブラケット6に接着剤注入用穴8と反負荷側ブラケット6の内周面に接着剤浸透用溝9を備えた部分である。
FIG. 1 is a side sectional view showing a motor in an embodiment of the present invention, and FIG. 2 is a front view of the anti-load side bracket in the embodiment of the present invention as viewed from the anti-load side.
In the figure, reference numeral 1 denotes a rotor having a rotating shaft 1a, and 2 denotes a stator on which a stator winding 2a is mounted and resin molded. Reference numerals 3 and 4 denote load-side and anti-load-side bearings, and the inner ring is fixed by shrinkage to the rotary shaft 1a. Reference numerals 5 and 6 denote load-side and anti-load-side brackets, which are provided with bearing housings 5a and 6a at the center and are attached to the stator 2. 7 is a wave spring. The outer ring of the load side bearing 3 is mechanically fixed to the housing portion of the load side bracket 5 with a cover. The outer ring of the anti-load side bearing 4 has a slight clearance from the housing, and a wave spring 7 is provided between the outer ring end surface and the housing end of the anti-load side bracket 6, and the spring pressure preloads the bearing. Is given. An adhesive injection hole 8 is provided at a position where the bearing housing portion 6a of the anti-load side bearing 4 and the anti-load side bracket 6 can be seen. An adhesive penetration groove 9 is formed in the circumferential direction on the inner peripheral surface of the bearing housing portion 6a. The adhesive injection hole 8 passes through the adhesive penetration groove 9.
In the above configuration, after assembling the motor, after confirming that the anti-load side bearing 4 is assembled without being caught from the adhesive injection hole 8, the adhesive is injected, and the outer ring of the anti-load side bearing 4 is removed. It is to be fixed.
The portion where the present invention differs from Patent Document 1 is a portion provided with an adhesive injection hole 8 in the anti-load side bracket 6 and an adhesive penetration groove 9 on the inner peripheral surface of the anti-load side bracket 6.

本発明の実施例におけるモータを示す側断面図である。It is a sectional side view which shows the motor in the Example of this invention. 本発明の実施例における反負荷側ブラケットを反負荷側から見た正面図である。It is the front view which looked at the anti-load side bracket in the Example of this invention from the anti-load side. 従来技術におけるモータを示す側断面図である。It is a sectional side view which shows the motor in a prior art.

符号の説明Explanation of symbols

1 回転子
1a 回転軸
2 固定子
2a 固定子巻線
3 負荷側軸受
4 反負荷側軸受
5 負荷側ブラケット
5a 軸受ハウジング部
6 反負荷側ブラケット
6a 軸受ハウジング部
7 波形バネ
8 接着剤注入用穴
DESCRIPTION OF SYMBOLS 1 Rotor 1a Rotating shaft 2 Stator 2a Stator winding 3 Load side bearing 4 Anti load side bearing 5 Load side bracket 5a Bearing housing part 6 Anti load side bracket 6a Bearing housing part 7 Wave spring 8 Adhesive injection hole

Claims (1)

固定子巻線が装着された固定子と、
軸受ハウジング部を有し、前記固定子の軸方向両側に設けられた負荷側ブラケットおよび反負荷側ブラケットと、
弾性体の反発力で外輪に与圧をかけられた状態で前記反負荷側ブラケットの前記軸受ハウジング部に組み込まれた反負荷側軸受と、
前記反負荷側軸受に回転自在に支持された回転軸を有する回転子と、
前記反負荷側ブラケットに、前記回転軸のための穴とは別に設けられ、かつ、前記反負荷側軸受と前記反負荷側ブラケットの前記軸受ハウジング部とを目視できる位置に設けられた接着剤注入用穴と、
前記外輪が接する前記軸受ハウジング部の内周面に円周方向に形成され、前記接着剤注入用穴に連通する溝と、
前記外輪と前記軸受ハウジング部間に前記接着剤注入用穴から注入された接着剤と、
を備え
前記接着剤注入用穴から前記反負荷側軸受が引っ掛かり等なく組み込まれていることを確認した上で前記接着剤を注入し、前記外輪を固定したモータ。
A stator fitted with a stator winding;
A load-side bracket and an anti-load-side bracket provided on both axial sides of the stator, each having a bearing housing portion;
An anti-load-side bearing incorporated in the bearing housing portion of the anti-load-side bracket in a state where pressure is applied to the outer ring by the repulsive force of the elastic body;
A rotor having a rotating shaft rotatably supported by the anti-load side bearing;
Adhesive injection provided in the anti-load side bracket separately from the hole for the rotating shaft, and provided at a position where the anti-load side bearing and the bearing housing portion of the anti-load side bracket can be visually observed. Holes,
A groove formed in a circumferential direction on the inner peripheral surface of the bearing housing portion with which the outer ring contacts, and a groove communicating with the adhesive injection hole;
An adhesive injected from the adhesive injection hole between the outer ring and the bearing housing portion;
Equipped with a,
A motor in which the outer ring is fixed by injecting the adhesive after confirming that the anti-load-side bearing is assembled without being caught from the adhesive injection hole .
JP2004079523A 2004-03-19 2004-03-19 motor Expired - Fee Related JP4645879B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11043874B2 (en) 2017-11-15 2021-06-22 Seiko Epson Corporation Motor and robot
US11658540B2 (en) 2018-03-01 2023-05-23 Dyson Technology Limited Assembling method of a rotor to an electric motor frame

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4706922B2 (en) * 2005-11-14 2011-06-22 株式会社安川電機 motor
JP6744194B2 (en) * 2016-10-18 2020-08-19 マブチモーター株式会社 Bearing holding structure and motor
JP2019092300A (en) 2017-11-15 2019-06-13 セイコーエプソン株式会社 Motor and robot
CN111684710A (en) 2018-02-21 2020-09-18 株式会社安川电机 Motor control system, motor control device, and bearing life diagnosis method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312939U (en) * 1974-02-12 1978-02-02
JPH0357099Y2 (en) * 1986-02-20 1991-12-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11043874B2 (en) 2017-11-15 2021-06-22 Seiko Epson Corporation Motor and robot
US11658540B2 (en) 2018-03-01 2023-05-23 Dyson Technology Limited Assembling method of a rotor to an electric motor frame

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