JPH0198762A - Motor with gear - Google Patents
Motor with gearInfo
- Publication number
- JPH0198762A JPH0198762A JP25307287A JP25307287A JPH0198762A JP H0198762 A JPH0198762 A JP H0198762A JP 25307287 A JP25307287 A JP 25307287A JP 25307287 A JP25307287 A JP 25307287A JP H0198762 A JPH0198762 A JP H0198762A
- Authority
- JP
- Japan
- Prior art keywords
- gears
- gear
- motor
- tooth
- magnetic attraction
- 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
Links
- 239000002184 metal Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Landscapes
- Gears, Cams (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、特に中相モータにおいて動力伝達用として用
いられる歯１１（どうしの噛合いにより発生する騒音の
低減対策を溝じた歯す（付モータに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tooth 11 (grooved tooth) used for power transmission, particularly in a medium-phase motor (tooth teeth with grooves designed to reduce noise generated by meshing with each other). This is related to the attached motor.
（従来の技術）
−・般に、この種の歯車付モータは例えば第２図〜第４
図に示すように、モータ（５）の軸（３）に動力伝達用
の駆動歯ｉｔ！、（１）を装着する一方、この駆動歯ｉ
１ｔ （＋ ）に噛合する従動歯１ｔ（（２）を出力軸
（４）に取付けるとともに、これら両歯ｉ１ｆ、（１）
（２）を甲歯屯により構成して、その噛合いにより前記
モータ（５）の回転トルクを出力軸（４）に伝達するよ
うに構成されている。(Prior art) - Generally speaking, this type of geared motor is shown in Figures 2 to 4, for example.
As shown in the figure, there are drive teeth for power transmission on the shaft (3) of the motor (5)! , (1), while this drive tooth i
The driven tooth 1t ((2) that meshes with 1t (+) is attached to the output shaft (4), and both teeth i1f, (1)
(2) is constituted by a toothed gear, and the rotational torque of the motor (5) is transmitted to the output shaft (4) by meshing therewith.
（発明が解決しようとす・る問題点）
ところで、この種のモータ、特に中相モータにおいては
、原理■−モータで発生するトルクの脈動に起因する電
源周波数の２倍の周波数の振動がモータ軸（３）に発生
することが知られている。このモータ軸（３）の振動は
、第４図の矢印（ａ）で示す回転方向に作用するのであ
るが、Ｌγいに噛合する両歯ｒｌｃ（１）（２）の組１
７．時や加−臼１、νの精度上の問題により、両歯＋ｔ
（（１）（２）の取付軸、つまりモータ軸（３）および
出力軸（４）の間でやむを得ない多少の狂いが生じると
第５図に示すように、両歯用（１０２）間に僅かなバッ
クラッシュ（隙間）δ１ ・δ２が生じる。この隙間δ
、・δ２は特に無負荷または軽負４：ｆ状態において発
生しやす（、前記モータ軸（３）の振動により、隙間δ
１ ・δ２で両歯車（１）（２）が打合って耳障りな騒
音が発生する虞れがあった。(Problem to be Solved by the Invention) By the way, in this type of motor, especially in a medium-phase motor, vibrations at a frequency twice the power supply frequency caused by torque pulsations generated in the motor cause the motor to oscillate. It is known that this occurs on axis (3). This vibration of the motor shaft (3) acts in the rotational direction shown by the arrow (a) in Fig. 4.
7. Due to problems with the time and precision of milling wheel 1 and ν, both teeth
(If some unavoidable misalignment occurs between the mounting shafts (1) and (2), that is, the motor shaft (3) and the output shaft (4), as shown in Figure 5, A slight backlash (gap) δ1 and δ2 occurs.This gap δ
,・δ2 is particularly likely to occur in no-load or light negative 4:f conditions (due to the vibration of the motor shaft (3), the gap δ2
There was a risk that both gears (1) and (2) would collide with each other at 1 and δ2, causing a harsh noise.
この騒ｆ？防止策として、従来では周知のように１１；
Ｉ記両ｌ′８ＩＩ＋、（＋）（２）を合成・樹脂で構成
したり、あるいは低騒音のはすば歯車を使用しているが
、合成樹脂製の歯ＩＩ（は強度にの強度−１−の制約が
大きく、またはすば歯車は加工難度が高いといった問題
点があった。This commotion f? As a preventive measure, as is well known in the past, 11;
I'8 II+, (+) (2) are made of synthetic resin, or low-noise helical gears are used, but the tooth II (made of synthetic resin has a strength - There were problems in that there were large restrictions on the number 1-, and helical gears were difficult to process.
本発明は、上記従来の問題点を解決するためになされた
もので、特に無負荷あるいは軽負荷状態において、歯車
どうしの噛合いにより発生する騒音を、例えば通常の金
属製平歯１１１．の材質・形状を変更することなく、低
減させることを［１的とするものである。The present invention has been made in order to solve the above-mentioned problems of the conventional art, and is intended to reduce the noise generated by the meshing of gears, for example, the normal metal spur teeth 111. Objective 1 is to reduce this without changing the material or shape of the material.
（問題点を解決するための手段）
このような目的を達成するための本発明の技術的下段は
、複数個の金属製１″Ｅ １（を順次噛合させた歯車列
を備え、前記各金属製歯車の内、互いに噛合する一方の
ＩＷ ’ＩＣの少なくとも歯先から歯元に亙って磁気吸
引力を保有させた構成に特徴を有している。(Means for Solving the Problems) The technical lower stage of the present invention to achieve such an object includes a gear train in which a plurality of metal 1''E1 ( Among the manufactured gears, one of the IW' ICs that mesh with each other is characterized by a structure in which magnetic attraction is maintained at least from the tip of the tooth to the root of the tooth.
（作用）
に記構成によると、モータの駆動回転時において、一方
の歯車のもつ磁気吸引力の作用により、他方の歯！１〔
の歯部が噛合い部分において、一方の歯車の南部に接触
しながら回転していく。したがって、組立上あるいは加
工精度上で両歯Ｉ１ｔ間に僅かな隙間が生じていても、
この隙間における両歯車どうしの打合いによる騒音の発
生が著しく低減するのである。(Function) According to the configuration described above, when the motor is driving and rotating, the magnetic attraction force of one gear causes the other tooth to move! 1 [
The teeth rotate while contacting the southern part of one gear at the meshing part. Therefore, even if there is a slight gap between both teeth I1t due to assembly or processing accuracy,
The noise generated by the collision between the two gears in this gap is significantly reduced.
（実施例）
以−ド、本発明の実施例を図面に基づき詳細に説明する
。なお、この実施例に係る歯１〔付きモータの基本構造
は第２図〜第４図に示した前記−・殻内な歯車付モータ
と同様であり、同一・の構造並びに同一・の作用を有す
る部分については、重複を避けるためにその説明を省略
する。(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. The basic structure of the motor with teeth 1 according to this embodiment is the same as the above-mentioned in-shell geared motor shown in Figs. 2 to 4, and has the same structure and the same function. Descriptions of those parts will be omitted to avoid duplication.
第１図は、第２図に示したモータ軸（３）と出力軸（４
）とに装着されるこの実施例における駆動歯車と従動歯
＋ｊ（の噛合い部分を拡大して示しており、この図に示
すように金属、すなわち磁性体製のげいに噛合する２つ
の５１２歯ｔｌＬ（１１）（１２）の内、−・方の南＝
ｒ１． （図では駆動歯１ｉ：）（Ｉｆ）には同図中、
南部（Ｉ３）の斜線部分で示された歯先（１３ａ）から
歯元（１３ｂ）に亙って着磁を施し、適当な磁気吸引力
を保有させ、また他方の歯車（図では従動歯車’） （
＋２）には着磁を施さず、その各南部（１４）が一方の
ｆｆ１ｉｌ（（１１）の歯部（Ｉ３）に磁気吸引される
ようにするのである。前記一方の歯ｒｌ（（ＩＩ）の磁
気吸引力の大きさは、他方の歯ｒｌｔ（１２）の南部（
Ｉ４）を回転方向に吸引する程度に設定しておくとよい
。Figure 1 shows the motor shaft (3) and output shaft (4) shown in Figure 2.
) is an enlarged view of the meshing part of the drive gear and driven tooth +j (in this embodiment), which are mounted on Of the teeth tlL (11) (12), the south of the - direction =
r1. (In the figure, drive tooth 1i:) (If) in the same figure,
Magnetization is applied from the tooth tip (13a) to the tooth base (13b) shown in the shaded area in the southern part (I3) to maintain an appropriate magnetic attraction force. ) (
+2) is not magnetized, and each southern part (14) is magnetically attracted to the teeth (I3) of one ff1il ((11). The magnitude of the magnetic attraction of the other tooth rlt (12) in the southern part (
I4) should be set to such an extent that it is sucked in the rotational direction.
上記構成において、モータを駆動し、両ｒｆ４屯（１１
）（＋２）の噛合いにより出力軸に動力伝達されている
状態では、−・方のｉ′ｉ！ｉ＋１（ＩＩ）の磁気吸引
力により、他方の歯Ｉｆ（（１２）は、両歯＋１（１１
）（＋２）の歯部（Ｉ３）（１４）間の隙間δの大きさ
に関係なく、−・方のｉＭ 、Ｉ（（１１）の歯”Ｍ＜
（１３）に吸引されて接触してい＜、シたかって、モ
ータの駆動時におけるモータ軸（３）の振動により２つ
の歯車（ＩＩＨＩ２）の隙間δで生じる不快音を著しく
低減させることができる。In the above configuration, the motor is driven and both rf4tons (11
)(+2), when the power is transmitted to the output shaft by the meshing of the -. i'i! Due to the magnetic attraction force of i+1(II), the other tooth If((12) becomes both teeth+1(11
) (+2), regardless of the size of the gap δ between the tooth parts (I3) and (14), -.
(13), the unpleasant noise generated in the gap δ between the two gears (IIHI2) due to the vibration of the motor shaft (3) when the motor is driven can be significantly reduced.
なお、この実施例では１対の２連歯１１（について説明
したが、本発明では３連以七のｒｌ ｉｆ、を順次噛合
させた歯車列において、各歯車の内、着磁されていない
他方の歯ｔｊ［群と噛合する一方の歯車群の各南部の少
なくとも歯先から歯元に屍って磁気吸引力を保有させる
ものであれば、そのいずれに°おいも適用することがで
きるものである＝（発明の効果）
以ｌ；説明したように本発明によれば、複数個の金属製
歯車を順次噛合させた歯車列を備え、前記各金属製歯車
の内、互いに噛合するー・方の歯車の各南部の少なくと
も歯先から歯元に亙って磁気吸引力を保有させるものと
したので、モータの駆動回転時において、一方の歯車の
もつ磁気吸引力の作用により、他方の歯車の歯部が噛合
い部分において、一方の歯１１（の南部に回転方向に吸
引されながら接触する。したがって、組立１・、あるい
は加」二精度りで両ｉ’ａ ’旧ｊｌに僅かな隙間が生
じていても、この隙間における両歯−１（どうしの打合
いによる騒音の発生が著゛シ＜低減し、特にｊｌｌ（負
前状態や軽負荷状態での不快音をな（して静粛な歯車付
モータを実現できるに仝った。In this embodiment, a pair of double teeth 11 (rl if) has been described, but in the present invention, in a gear train in which three to seven rl ifs are sequentially meshed, the other of the gears that is not magnetized. Teeth tj[° can be applied to any of the gears as long as they retain magnetic attraction from at least the tip to the root of each of the southern parts of one gear group meshing with the gear group. = (Effects of the Invention) As explained hereinafter, according to the present invention, a gear train is provided in which a plurality of metal gears are sequentially meshed, and among the metal gears, those of the metal gears that mesh with each other are Since the magnetic attraction force is maintained at least from the tooth tip to the tooth root in the southern part of each gear, when the motor is driven and rotated, the magnetic attraction force of one gear causes the teeth of the other gear to In the meshing part, the teeth 11 contact the southern part of the tooth 11 while being attracted in the direction of rotation. Therefore, a slight gap is created between both i'a' and old jl during assembly 1 or machining. Even if the two gears collide with each other in this gap, the noise generated by the collision between the two gears is significantly reduced. However, it was not possible to realize an attached motor.
第１図は本発明に係る歯市付モータの実施例における要
部拡大図、第２図は一般的な歯車付モータの基本構造を
示す一部切欠側面図、第３図は同調ｉ１ｉ部分の正面図
、第４図は同歯車部分の側面図、第５図は従来の歯巾噛
合部分を示す要部拡大図である。
（１１）・・・一方の歯巾、（＋２）・・・他方の歯車
、（＋３）・・・一方の歯巾の歯部、（１３ａ）・・・
−・方の歯巾の歯先、（＋３ｂ）・・・−・方の歯巾の
歯元、（Ｉ４）・・・他方の歯巾の１背部。
第１図
、？−−−、 αＤ 一方のや工＠、他方
の（至）車
（１３ｂ） ニ一方の歯車の肥元
Ｑ４１ 他方の歯車の歯部
第２図
第３図
〆
第４図
コ
一＼Fig. 1 is an enlarged view of the main parts of an embodiment of the geared motor according to the present invention, Fig. 2 is a partially cutaway side view showing the basic structure of a general geared motor, and Fig. 3 is of the tuned i1i portion. FIG. 4 is a front view, FIG. 4 is a side view of the same gear portion, and FIG. 5 is an enlarged view of main parts showing a conventional tooth width meshing portion. (11)...One tooth width, (+2)...The other gear, (+3)...Tooth portion of one tooth width, (13a)...
- Tip of tooth width on one side, (+3b)... Root of tooth width on one side of tooth width, (I4)... 1 back part of tooth width on other side. Figure 1, ? ---, αD One gear @, the other (to) wheel (13b) D Higen of one gear Q41 Teeth of the other gear Fig. 2 Fig. 3 〆 Fig. 4 Ko ＼
Claims (2)
え、前記各金属製歯車の内、互いに噛合する一方の歯車
の少なくとも歯先から歯元に亙って磁気吸引力を保有さ
せたことを特徴とする歯車付モータ。(1) A gear train is provided in which a plurality of metal gears are sequentially meshed, and one of the metal gears that mesh with each other has a magnetic attraction force at least from the tooth tip to the tooth root. A motor with gears.
歯車の歯部を回転方向に吸引する程度に設定されている
特許請求の範囲第１項記載の歯車付モータ。(2) The geared motor according to claim 1, wherein the magnitude of the magnetic attraction force of the one gear is set to such an extent that it attracts the teeth of the other gear in the rotational direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25307287A JPH0198762A (en) | 1987-10-07 | 1987-10-07 | Motor with gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25307287A JPH0198762A (en) | 1987-10-07 | 1987-10-07 | Motor with gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0198762A true JPH0198762A (en) | 1989-04-17 |
Family
ID=17246100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25307287A Pending JPH0198762A (en) | 1987-10-07 | 1987-10-07 | Motor with gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0198762A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5771745A (en) * | 1995-05-10 | 1998-06-30 | Volkswagen Ag | Gear arrangement having a magnetic toothed disk |
| WO2015169696A1 (en) * | 2014-05-07 | 2015-11-12 | Olympus Winter & Ibe Gmbh | Endoscope with pivotal optical unit |
| GB2586051A (en) * | 2019-07-31 | 2021-02-03 | Airbus Operations Ltd | A landing gear drive system |
-
1987
- 1987-10-07 JP JP25307287A patent/JPH0198762A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5771745A (en) * | 1995-05-10 | 1998-06-30 | Volkswagen Ag | Gear arrangement having a magnetic toothed disk |
| WO2015169696A1 (en) * | 2014-05-07 | 2015-11-12 | Olympus Winter & Ibe Gmbh | Endoscope with pivotal optical unit |
| GB2586051A (en) * | 2019-07-31 | 2021-02-03 | Airbus Operations Ltd | A landing gear drive system |
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