JP5595824B2

JP5595824B2 - Reducer motor

Info

Publication number: JP5595824B2
Application number: JP2010174406A
Authority: JP
Inventors: 孝金井; 正岡部; 佑希中田
Original assignee: Nidec Copal Electronics Corp
Current assignee: Nidec Copal Electronics Corp
Priority date: 2010-08-03
Filing date: 2010-08-03
Publication date: 2014-09-24
Anticipated expiration: 2030-08-03
Also published as: JP2012036910A

Description

本発明は薄型にするために遊星ギヤを使用した減速機を用いた減速機付モータに関する。 The present invention relates to a motor with a speed reducer that uses a speed reducer that uses a planetary gear to reduce the thickness.

従来、この種の減速機付モータはスラスト力を受ける軸受として、内径寸法に対して幅の狭い薄肉型と呼ばれるボールベアリングが使用されているが、この薄肉型と呼ばれるボールベアリングは高価で、取り扱いが大変で、剛性が低いという欠点があった。 Conventionally, this type of motor with a reduction gear has used a ball bearing called a thin-walled type that has a narrow width with respect to the inner diameter as a bearing that receives a thrust force. However, there was a drawback that rigidity was low.

特開２００６−１４１１０１号公報JP 2006-141101 A

本発明は以上のような従来の欠点に鑑み、薄型でもスラスト力を十分に受けることができ、取り扱いが容易で、十分な剛性が得られ、安価なベアリングを使用することができる減速機付モータを提供することを目的としている。 In view of the above-described conventional drawbacks, the present invention is a motor with a reduction gear that can sufficiently receive a thrust force even if it is thin, is easy to handle, has sufficient rigidity, and can use an inexpensive bearing. The purpose is to provide.

本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。
ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。 The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

上記目的を達成するために、本発明はモータベースに回転自在に固定された回転軸、この回転軸に取付けられたケース体を備えたモータ本体と、このモータ本体の回転軸に固定された太陽ギヤ、この太陽ギヤの上部位置で前記回転軸に対して回転可能となるように取付けられたキャリヤ、このキャリヤに回転可能となるように取付けられた前記太陽ギヤと噛み合う複数個の遊星ギヤ、この複数個の遊星ギヤと噛み合う前記モータベースに固定されたギヤベースに取付けられた内ギヤ、前記複数個の遊星ギヤ間で、かつ前記モータベースと前記ギヤベースとの間に位置してスラスト力を受けるように、前記キャリヤに取付けられた２個以上のスラスト受けベアリングとからなる減速機とで減速機付モータを構成している。 In order to achieve the above object, the present invention provides a motor shaft having a rotating shaft rotatably fixed to a motor base, a case body attached to the rotating shaft, and a sun fixed to the rotating shaft of the motor body. A gear, a carrier mounted to be rotatable with respect to the rotating shaft at an upper position of the sun gear, a plurality of planetary gears meshed with the sun gear mounted to be rotatable on the carrier, An internal gear attached to a gear base fixed to the motor base that meshes with a plurality of planetary gears, and is positioned between the plurality of planetary gears and between the motor base and the gear base so as to receive a thrust force. In addition, a motor with a speed reducer is constituted by a speed reducer comprising two or more thrust bearings attached to the carrier.

以上の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。
（１）請求項１により、薄型にしても、スラスト力を安価で、取り扱いが容易で、剛性を有する少なくとも２個以上のスラスト受けベアリングで受けることができる。
したがって、従来のようにスラスト、ラジアルの両方向の荷重に対した、高価なうえに、高精度の部品加工が必要な大径のベアリングを用いなくてもよい。
（２）前記（１）により、スラスト力を受ける構造であるため、ラジアル方向の寸法を高精度に加工する部品が減り、組み立てが容易にできる。
（３）請求項２も前記（１）、（２）と同様な効果が得られる。 As is clear from the above description, the present invention has the following effects.
(1) According to the first aspect, the thrust force can be received by at least two thrust receiving bearings which are inexpensive, easy to handle and have rigidity even if the thickness is reduced.
Therefore, it is not necessary to use a large-diameter bearing that is expensive and requires high-accuracy component processing for loads in both thrust and radial directions as in the prior art.
(2) Due to the structure that receives the thrust force according to the above (1), the number of parts for processing the dimension in the radial direction with high accuracy is reduced, and the assembly can be facilitated.
(3) In claim 2, the same effects as in the above (1) and (2) can be obtained.

本発明を実施するための第１の形態の平面図。The top view of the 1st form for carrying out the present invention. 図１の２−２線に沿う断面図。Sectional drawing which follows the 2-2 line of FIG. 図２の３−３線に沿う断面図。Sectional drawing which follows the 3-3 line of FIG. 本発明を実施するための第２の形態の平面図。The top view of the 2nd form for carrying out the present invention. 図４の５−５線に沿う断面図。Sectional drawing which follows the 5-5 line of FIG. 図５の６−６線に沿う断面図。Sectional drawing which follows the 6-6 line of FIG.

以下、図面に示す本発明を実施するための形態により、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

図１ないし図３に示す本発明を実施するための第１の形態において、１は本発明の減速機付モータで、この減速機付モータ１はモータ本体２と、このモータ本体２の回転部材に取付けられた、薄型にするために遊星ギヤを使用した減速機３とで構成されている。 In the first embodiment for carrying out the present invention shown in FIGS. 1 to 3, reference numeral 1 denotes a motor with a speed reducer according to the present invention. The motor with a speed reducer 1 includes a motor main body 2 and a rotating member of the motor main body 2. And a speed reducer 3 using a planetary gear to reduce the thickness.

前記モータ本体２はモータベース８にラジアルベアリング７とスリーブ５を介して回転自在に固定された回転軸６を備え、前記モータベース８の外周部にはステータコア１０が取付けられ、このステータコア１０外周部位置に対向するように磁石９が配置されている。この磁石９は回転部材としてのケース体４に固定されており、前記ケース体４はスリーブ５を介して回転軸６へ回転力を伝達するように構成されている。 The motor body 2 includes a rotating shaft 6 that is rotatably fixed to a motor base 8 via a radial bearing 7 and a sleeve 5, and a stator core 10 is attached to the outer periphery of the motor base 8. A magnet 9 is arranged so as to face the position. The magnet 9 is fixed to a case body 4 as a rotating member, and the case body 4 is configured to transmit a rotational force to the rotating shaft 6 via a sleeve 5.

前記減速機３は前記スリーブ５の上部位置の前記回転軸６に固定された太陽ギヤ１１と、この太陽ギヤ１１が取付けられた上部位置の、前記回転軸６に軸心方向に螺合するボルト１２で固定されたキャリヤ支持筒１３と、このキャリヤ支持筒１３の外周部にラジアルベアリング１４を介して回転可能に取付けられたキャリヤ１５と、このキャリヤ１５に所定間隔、本発明の実施の形態では１２０度間隔で軸心方向に配置されたボルト１６、１６、１６で固定された軸１７、１７、１７にラジアルベアリング１８、１８、１８を介して取付けられた、前記太陽ギヤ１１と噛み合う遊星ギヤ１９、１９、１９と、この遊星ギヤ１９、１９、１９の外周部を覆うように前記モータベース８に複数本のボルト２０で固定された断面Ｔ字状のギヤベース２１と、このギヤベース２１の前記遊星ギヤ１９、１９、１９と対応する部位の内壁面に固定された、該遊星ギヤ１９、１９、１９と噛み合う内ギヤ２２と、前記遊星ギヤ１９、１９、１９間で、かつ前記モータベース８と前記ギヤベース２１との間に位置してスラスト力を受けるように、前記キャリヤ１５に該キャリヤ１５の軸心方向と直角方向に位置するボルト２３、２３、２３で取付けられた３個のスラスト受けベアリング２４、２４、２４とで構成されている。 The speed reducer 3 includes a sun gear 11 fixed to the rotary shaft 6 at an upper position of the sleeve 5 and a bolt screwed in the axial direction to the rotary shaft 6 at an upper position to which the sun gear 11 is attached. 12, a carrier support cylinder 13 fixed at 12; a carrier 15 rotatably attached to the outer periphery of the carrier support cylinder 13 via a radial bearing 14; and a predetermined interval between the carrier 15 and the embodiment of the present invention. A planetary gear that meshes with the sun gear 11 and is attached to shafts 17, 17, and 17 fixed by bolts 16, 16, and 16 arranged in the axial direction at intervals of 120 degrees via radial bearings 18, 18, and 18. 19, 19, 19 and a T-shaped gear base fixed to the motor base 8 with a plurality of bolts 20 so as to cover the outer periphery of the planetary gears 19, 19, 19 1, an inner gear 22 that is fixed to an inner wall surface of the gear base 21 corresponding to the planetary gears 19, 19, 19 and meshes with the planetary gears 19, 19, 19, and the planetary gears 19, 19, 19 Bolts 23, 23, 23 positioned on the carrier 15 in a direction perpendicular to the axial direction of the carrier 15 so as to receive a thrust force between and between the motor base 8 and the gear base 21. It consists of three attached thrust bearings 24, 24, 24.

上記構成の減速機付モータ１は、モータ本体２の回転部材としてのケース体４の回転により、回転軸６および太陽ギヤ１１がケース体４と一体となって回転する。 In the motor 1 with a speed reducer having the above-described configuration, the rotating shaft 6 and the sun gear 11 rotate integrally with the case body 4 by the rotation of the case body 4 as the rotating member of the motor body 2.

このケース体４と回転軸６および太陽ギヤ１１の回転により、キャリヤ１５に取付けられた遊星ギヤ１９、１９、１９が太陽ギヤ１１の外周部を回転し、キャリヤ１５を減速状態で回転させる。 Due to the rotation of the case body 4, the rotating shaft 6 and the sun gear 11 , the planetary gears 19, 19, 19 attached to the carrier 15 rotate the outer periphery of the sun gear 11, and rotate the carrier 15 in a decelerated state.

この時、キャリヤ１５は３個のスラスト受けベアリング２４、２４、２４でスラスト力を受けるため、従来のように大径の薄肉型と呼ばれるボールベアリングを用いなくてもよく、安価で、取り扱いが容易で、剛性を高めることができる減速機３にできる。 At this time, since the carrier 15 receives the thrust force by the three thrust receiving bearings 24, 24, 24, it is not necessary to use a ball bearing called a large-diameter thin wall type as in the prior art, and it is inexpensive and easy to handle. Thus, the reduction gear 3 that can increase the rigidity can be obtained.

[発明を実施するための異なる形態]
次に、図４ないし図６に示す本発明を実施するための異なる形態につき説明する。なお、この本発明を実施するための異なる形態の説明に当って、前記本発明を実施するための第１の形態と同一構成部分には同一符号を付して重複する説明を省略する。 [Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 4 to 6 will be described. In the description of different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

図４ないし図６に示す本発明を実施するための第２の形態において、前記本発明を実施するための第１の形態と主に異なる点は、太陽ギヤ１１と内ギヤ２２との間に４個の遊星ギヤ１９Ａ、１９Ａ、１９Ａ、１９Ａを噛み合わせるとともに、この４個の遊星ギヤ１９Ａ、１９Ａ、１９Ａ、１９Ａ間で、かつモータベース８とギヤベース２１との間に位置してスラスト力を受けるようにキャリヤ１５にボルト２３、２３、２３、２３で取付けられた４個のスラスト受けベアリング２４、２４、２４、２４を用いて減速機３Ａを構成した点で、このように構成された減速機３Ａを用いた減速機付モータ１Ａにしても、前記本発明を実施するための第１の形態と同様な作用効果が得られる。 The second embodiment for carrying out the present invention shown in FIGS. 4 to 6 is mainly different from the first embodiment for carrying out the present invention between the sun gear 11 and the inner gear 22. The four planetary gears 19A, 19A, 19A, 19A are engaged with each other, and a thrust force is provided between the four planetary gears 19A, 19A, 19A, 19A and between the motor base 8 and the gear base 21. The speed reducer 3A is configured in that the speed reducer 3A is configured by using four thrust receiving bearings 24, 24, 24, 24 attached to the carrier 15 by bolts 23, 23, 23, 23. Even with the motor 1A with a speed reducer using the machine 3A, the same effects as the first embodiment for carrying out the present invention can be obtained.

本発明は薄型にするために遊星ギヤを使用した減速機を用いた減速機付モータを製造する産業で利用される。 The present invention is used in the industry for manufacturing a motor with a speed reducer using a speed reducer using a planetary gear in order to reduce the thickness.

１、１Ａ：減速機付モータ、２：モータ本体、
３、３Ａ：減速機、４：回転部材としてのケース体、
５：スリーブ、６：回転軸、
７：ラジアルベアリング、８：モータベース、
９：磁石、１０：ステータコア、
１１：太陽ギヤ、１２：ボルト、
１３：キャリヤ支持筒、１４：ラジアルベアリング、
１５：キャリヤ、１６：ボルト、
１７：軸、１８：ラジアルベアリング、
１９、１９Ａ：遊星ギヤ、２０：ボルト、
２１：ギヤベース、２２：内ギヤ、
２３：ボルト、２４：スラスト受けベアリング。 1, 1A: motor with reduction gear, 2: motor body,
3, 3A: Reducer, 4: Case body as rotating member,
5: Sleeve, 6: Rotating shaft,
7: Radial bearing, 8: Motor base,
9: Magnet, 10: Stator core,
11: Sun gear, 12: Bolt,
13: Carrier support cylinder, 14: Radial bearing,
15: Carrier, 16: Bolt,
17: Shaft, 18: Radial bearing,
19, 19A: planetary gear, 20: bolt,
21: Gear base, 22: Inner gear,
23: Bolt, 24: Thrust receiving bearing.

Claims

A rotating body fixed to the motor base for rotation, a motor body having a case body attached to the rotating shaft, a sun gear fixed to the rotating shaft of the motor body, and the rotation at the upper position of the sun gear A carrier mounted so as to be rotatable with respect to the shaft, a plurality of planetary gears engaged with the sun gear rotatably mounted on the carrier, and the motor base engaged with the plurality of planetary gears; Two or more attached to the carrier so as to receive a thrust force between an inner gear attached to a fixed gear base, the plurality of planetary gears, and between the motor base and the gear base. A speed reducer-equipped motor comprising: a speed reducer comprising a thrust receiving bearing.

The speed reducer is a sun gear fixed to the rotating shaft of the motor body, a carrier mounted via a radial bearing so as to be rotatable with respect to the rotating shaft at an upper position of the sun gear, and the carrier rotating on the carrier. A plurality of planetary gears meshed with the sun gear mounted via radial bearings to enable the inner gear mounted on a gear base fixed to the motor base meshed with the plurality of planetary gears; It is composed of at least two thrust receiving bearings attached to the carrier so as to receive a thrust force between a plurality of planetary gears and between the motor base and the gear base. The motor with a speed reducer according to claim 1.