JP3051827B2 - Stator fixing structure of brushless DC motor - Google Patents
Stator fixing structure of brushless DC motorInfo
- Publication number
- JP3051827B2 JP3051827B2 JP17899696A JP17899696A JP3051827B2 JP 3051827 B2 JP3051827 B2 JP 3051827B2 JP 17899696 A JP17899696 A JP 17899696A JP 17899696 A JP17899696 A JP 17899696A JP 3051827 B2 JP3051827 B2 JP 3051827B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- motor
- brushless
- elastic member
- boss
- 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 - Fee Related
Links
Landscapes
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に低騒音を求め
られるレーザビームプリンタ、複写機などの感光体ドラ
ム駆動や複写時の紙送り駆動に使用されるブラシレスＤ
Ｃモータの固定子固定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 brushless D used for driving a photosensitive drum of a laser beam printer, a copying machine or the like which requires particularly low noise, and a paper feed drive for copying.
The present invention relates to a stator fixing structure for a C motor.
【０００２】[0002]
【従来の技術】図４は従来のブラシレスＤＣモータの固
定子固定構造を示す半断面図である。図に示すように、
積層電磁鋼板８にコイル９を装着した固定子７は、モー
タ固定用フランジ１に装着された軸受ハウジング２に接
続するボス４に固定子固定用ネジ１０により固定されて
いる。その際、コイル９の励磁力と回転子５に装着され
た回転子マグネット６の磁力との反発力で緩みを生じな
いように、固定子固定用ネジ１０の締め付け力を高くし
堅固に固定する構造となっている。2. Description of the Related Art FIG. 4 is a half sectional view showing a stator fixing structure of a conventional brushless DC motor. As shown in the figure,
The stator 7 with the coil 9 mounted on the laminated electromagnetic steel sheet 8 is fixed to the boss 4 connected to the bearing housing 2 mounted on the motor fixing flange 1 by means of the stator fixing screw 10. At this time, the tightening force of the stator fixing screw 10 is increased and firmly fixed so as not to loosen due to the repulsive force of the exciting force of the coil 9 and the magnetic force of the rotor magnet 6 mounted on the rotor 5. It has a structure.
【０００３】[0003]
【発明が解決しようとする課題】しかし、このような従
来のブラシレスＤＣモータの固定子固定構造において
は、積層電磁鋼板８に装着されたコイル９に電流が流れ
ると、固定子７から発せられた励磁音が直接ボス４に伝
わり、騒音の原因となる問題があった。However, in such a conventional stator fixing structure of a brushless DC motor, when a current flows through the coil 9 mounted on the laminated electromagnetic steel sheet 8, the current is emitted from the stator 7. There was a problem that the excitation sound was directly transmitted to the boss 4 and caused noise.
【０００４】本発明は上述の課題を解決するためになさ
れたもので、励磁音による騒音を低減し、併せて固定子
固定用ネジの緩みを回避出来るブラシレスＤＣモータの
固定子固定構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a stator fixing structure of a brushless DC motor which can reduce noise caused by excitation noise and can also avoid loosening of a stator fixing screw. The purpose is to:
【０００５】[0005]
【課題を解決するための手段】この目的を達成するた
め、本発明においては、モータ固定用フランジに装着さ
れた軸受ハウジングに接続するボスに、積層電磁鋼板に
コイルを装着した固定子をネジ止め固定するブラシレス
ＤＣモータの固定子固定構造において、上記ボスの上記
固定子との接合面に円環状の凹部を形成し、上記凹部に
ゴムショア硬度で４５度以上の硬度を持つ弾性部材を装
着し、かつ上記凹部の深さを上記弾性部材の厚みの９０
％以下とし、上記弾性部材を介して上記固定子を上記ボ
スに固定する。In order to achieve this object, in the present invention, a stator having a coil mounted on a laminated electromagnetic steel plate is screwed to a boss connected to a bearing housing mounted on a motor fixing flange. In the stator fixing structure of the brushless DC motor to be fixed, an annular concave portion is formed on a joint surface of the boss with the stator, and the concave portion is formed in the concave portion.
An elastic member having a rubber shore hardness of 45 degrees or more is mounted, and the depth of the concave portion is set to 90 % of the thickness of the elastic member.
% Or less, and the stator is fixed to the boss via the elastic member.
【０００６】また、上記ボスの固定子との接合面は、円
環状の弾性部材当接面と、該当接面の外周縁にほぼ等配
され、それぞれ固定用ネジを貫挿する孔が穿設された３
個の突起部を備え、該突起部が前記嵌着される弾性部材
を保持する内周壁を備える。 The joint surface of the boss with the stator is circular.
Almost equally distributed on the annular elastic member contact surface and the outer peripheral edge of the contact surface
Holes, through which fixing screws are inserted.
Elastic member comprising a plurality of protrusions, and the protrusions are fitted with the protrusions.
And an inner peripheral wall that holds the
【０００７】[0007]
【発明の実施の形態】図１は本発明に係るブラシレスＤ
Ｃモータの固定子固定構造を示す半断面図である。図に
示すように、図４と同じ構造において、固定子固定用ネ
ジ１０を軸受ハウジング２に接続するボス４の端面凹部
１２に弾性体板部材として防振ゴム１１を装着する。図
２はモータ固定用フランジ１とこれに一体のボス４の拡
大断面図（ａ）および側面図（ｂ）である。図に示すよ
うに、ボス４の端面に円環状の凹部１２を形成し、凹部
１２に防振ゴム１１を装着し、防振ゴム１１の表面と固
定子７の端面とを固定子固定用ネジ１０により圧接して
いる。該例では固定子固定用ネジ１０の締め付けは１２
０度間隔の３個所で行っている。FIG. 1 shows a brushless D according to the present invention.
It is a half sectional view showing the stator fixing structure of C motor. As shown in the drawing, in the same structure as in FIG. 4, a vibration-proof rubber 11 is attached as an elastic plate member to an end recess 12 of the boss 4 connecting the stator fixing screw 10 to the bearing housing 2. FIG. 2 is an enlarged sectional view (a) and a side view (b) of the motor fixing flange 1 and the boss 4 integrated therewith. As shown in the drawing, an annular concave portion 12 is formed on the end surface of the boss 4, a vibration isolating rubber 11 is attached to the concave portion 12, and the surface of the vibration isolating rubber 11 and the end surface of the stator 7 are fixed with a stator fixing screw. 10 is pressed. In this example, the fastening of the stator fixing screw 10 is 12
The test is performed at three locations at 0-degree intervals.
【０００８】図３は防振ゴム１１の組立手順を示す説明
図である。図に示すように、ボス端面の凹部１２の深さ
Ｔ1より若干大きな、厚さＴ2をもつ円環状の防振ゴム１
１を凹部１２に挿入し、その後、固定子７を接合して、
固定子固定用ネジ１０によりネジ止めして圧接してい
る。FIG. 3 is an explanatory view showing a procedure for assembling the vibration isolating rubber 11. As shown, larger slightly than the depth T 1 of the recess 12 of the boss end surface of the annular having the second thickness T 2 vibration damping rubber 1
1 is inserted into the recess 12 and then the stator 7 is joined,
It is screwed and pressed by the stator fixing screw 10.
【０００９】この様な構造により、固定子７から発する
励磁音は防振ゴム１１により吸収されるので、モータ回
転時の低騒音化が達成できる。また、防振ゴム１１がネ
ジ締め付け力に呼応して弾発し、その弾発力で緩みの防
止に寄与することができる。With such a structure, the excitation sound emitted from the stator 7 is absorbed by the vibration-proof rubber 11, so that noise reduction when the motor rotates can be achieved. Further, the vibration isolating rubber 11 resiliently responds to the screw tightening force, and the resilient force can contribute to prevention of loosening.
【００１０】また、例えば直径８０φ、出力１０Ｗ程度
以下の小型モータでは、使用するゴムの硬度をゴムショ
ア４５度以上にすること、または、防振ゴム１１の厚み
Ｔ2に対し、ボス外周凹部１２の深さＴ1をＴ2の９０％
以下とすることが、振動の伝達を防ぐと共に、固定子固
定用ネジ１０の締め付け緩みを回避する条件として適し
ている事が実験的に確かめられている。For example, in the case of a small motor having a diameter of 80 φ and an output of about 10 W or less, the hardness of the rubber used should be 45 degrees or more, or the thickness T 2 of the vibration-proof rubber 11 should be less than the thickness T 2 of the rubber boss. 90% the depth T 1 of the T 2
It has been experimentally confirmed that the following conditions are suitable as conditions for preventing transmission of vibrations and for preventing loosening of the stator fixing screw 10.
【００１１】[0011]
【発明の効果】以上説明したように、本発明に係るブラ
シレスＤＣモータの固定子固定構造においては、固定子
と該固定子を保持するボスとの間に、防振ゴムを設ける
ことにより、励磁音による騒音を低減し、併せて固定子
固定用ネジの緩みを回避出来る。As described above, in the stator fixing structure of the brushless DC motor according to the present invention, the vibration-proof rubber is provided between the stator and the boss holding the stator to excite the excitation. Noise due to noise can be reduced, and at the same time, loosening of the stator fixing screw can be avoided.
【００１２】また、使用するゴムの硬度をゴムショア４
５度以上にすること、または、ボス外周凹部の深さを防
振ゴムの厚さの９０％以下とすることにより、上記の効
果を一層高めることが出来る。The hardness of the rubber used is determined by the rubber shore 4
The above effect can be further enhanced by setting the angle to 5 degrees or more, or setting the depth of the boss outer peripheral concave portion to 90% or less of the thickness of the vibration isolating rubber.
【図１】本発明に係るブラシレスＤＣモータの固定子固
定構造を示す半断面図である。FIG. 1 is a half sectional view showing a stator fixing structure of a brushless DC motor according to the present invention.
【図２】図１の部分拡大断面図（ａ）およびその側面図
（ｂ）である。FIG. 2 is a partially enlarged sectional view (a) of FIG. 1 and a side view (b) thereof.
【図３】防振ゴムの組立手順を示す説明図である。FIG. 3 is an explanatory view showing a procedure of assembling a vibration-proof rubber.
【図４】従来のブラシレスＤＣモータの固定子固定構造
を示す半断面図である。FIG. 4 is a half sectional view showing a stator fixing structure of a conventional brushless DC motor.
１ モータ固定用フランジ ２ 軸受ハウジング ３ 軸受 ４ ボス ５ 回転子 ６ 回転子マグネット ７ 固定子 ８ 積層電磁鋼板 ９ コイル １０ 固定子固定用ネジ １１ 防振ゴム １２ 凹部 １３ ネジ締め穴 DESCRIPTION OF SYMBOLS 1 Flange for motor fixing 2 Bearing housing 3 Bearing 4 Boss 5 Rotor 6 Rotor magnet 7 Stator 8 Laminated electromagnetic steel sheet 9 Coil 10 Screw for fixing stator 11 Anti-vibration rubber 12 Recess 13 Screw hole
Claims (2)
ウジングに接続するボスに、積層電磁鋼板にコイルを装
着した固定子をネジ止め固定するブラシレスＤＣモータ
の固定子固定構造において、上記ボスの上記固定子との
接合面に円環状の凹部を形成し、上記凹部にゴムショア
硬度で４５度以上の硬度を持つ弾性部材を装着し、かつ
上記凹部の深さを上記弾性部材の厚みの９０％以下と
し、上記弾性部材を介して上記固定子を上記ボスに固定
することを特徴とするブラシレスＤＣモータの固定子固
定構造。In a stator fixing structure for a brushless DC motor, a stator having a coil mounted on a laminated electromagnetic steel plate is screwed and fixed to a boss connected to a bearing housing mounted on a motor fixing flange. An annular recess is formed on the joint surface with the stator, and a rubber shore is
Attach an elastic member with a hardness of 45 degrees or more in hardness , and
The depth of the recess is 90% or less of the thickness of the elastic member.
And, a stator fixing structure of a brushless DC motor, characterized in that the stator via the elastic member is fixed to the boss.
弾性部材当接面と、該当接面の外周縁にほぼ等配され、
それぞれ固定用ネジを貫挿する孔が穿設された３個の突
起部を備え、該突起部が前記嵌着される弾性部材を保持
する内周壁を備えることを特徴とする請求項１に記載の
ブラシレスＤＣモータの固定子固定構造。2. The joint surface of the boss with the stator is formed in an annular shape.
The elastic member contact surface and the outer peripheral edge of the corresponding contact surface are arranged substantially equally,
Three protruding holes with holes for inserting fixing screws
A protrusion, and the protrusion holds the elastic member to be fitted.
Stator fixing structure of the brushless DC motor according to claim 1, characterized in that among comprises peripheral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17899696A JP3051827B2 (en) | 1996-07-09 | 1996-07-09 | Stator fixing structure of brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17899696A JP3051827B2 (en) | 1996-07-09 | 1996-07-09 | Stator fixing structure of brushless DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1028366A JPH1028366A (en) | 1998-01-27 |
| JP3051827B2 true JP3051827B2 (en) | 2000-06-12 |
Family
ID=16058299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17899696A Expired - Fee Related JP3051827B2 (en) | 1996-07-09 | 1996-07-09 | Stator fixing structure of brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3051827B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008010947A1 (en) | 2007-03-09 | 2008-09-11 | Asmo Co., Ltd., Kosai | Brushless motor and method of making the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100677512B1 (en) | 2005-01-03 | 2007-02-02 | 엘지전자 주식회사 | Vibration suppression structure of drum type washing machine |
| JP6726630B2 (en) * | 2017-02-08 | 2020-07-22 | 株式会社ケーヒン | Blower motor unit for air conditioning |
-
1996
- 1996-07-09 JP JP17899696A patent/JP3051827B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008010947A1 (en) | 2007-03-09 | 2008-09-11 | Asmo Co., Ltd., Kosai | Brushless motor and method of making the same |
| DE102008010947C5 (en) * | 2007-03-09 | 2017-06-14 | Asmo Co., Ltd. | Brushless motor and method of making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1028366A (en) | 1998-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |