JPH027850A - Motor-driven drive - Google Patents

Motor-driven drive

Info

Publication number
JPH027850A
JPH027850A JP63145168A JP14516888A JPH027850A JP H027850 A JPH027850 A JP H027850A JP 63145168 A JP63145168 A JP 63145168A JP 14516888 A JP14516888 A JP 14516888A JP H027850 A JPH027850 A JP H027850A
Authority
JP
Japan
Prior art keywords
clutch
return spring
output shaft
rotor
rotary lever
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
JP63145168A
Other languages
Japanese (ja)
Inventor
Tsutomu Tominaga
努 富永
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP63145168A priority Critical patent/JPH027850A/en
Priority to GB8911706A priority patent/GB2219637B/en
Priority to KR1019890007691A priority patent/KR920000503B1/en
Priority to DE3918487A priority patent/DE3918487A1/en
Priority to US07/363,004 priority patent/US4938327A/en
Publication of JPH027850A publication Critical patent/JPH027850A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To improve the reliability of an electromagnetic clutch by contacting the stop projection of a clutch moving board against the stopper of housing thereby eliminating compression force functioning onto a return spring. CONSTITUTION:When the target value of an output shaft 10 is set close to the ends of a rotatable range and a rotary lever 14 overacts frequently, the stop projection 7a of a clutch moving board 7 contacts against the stopper 23a or 23b of housing 23 to limit rotation of the output shaft 10. In this case, drive torque of a motor functions onto a pinion, a stepped gear, an output gear, a clutch rotor, etc. (not shown in the figures), but a return spring 8 is subjected only to the tension of an external load and not subjected to compression force. Consequently, even when a rotary lever 14 overacts to contact the clutch moving board 7 against the stoppers 23a, 23b and limit rotation of the motor, stop torque thereof is not applied onto the return spring 8 thus preventing buckling of the return spring 8, resulting in a highly reliable motor drive.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、電動機の回転を減速し、これを電磁クラッ
チを介して出力軸に伝達するようにした電動式駆動装置
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric drive device that reduces the rotation speed of an electric motor and transmits this speed to an output shaft via an electromagnetic clutch.

(従来の技術) 第3図は従来の電動式駆動装置の断面図、第4図は側面
図、第5図は第3図のv −v vA断面図、第6図は
同じ<■−vi線断面図であって、1は電動機で、その
出力軸にビニオン2を備えている。
(Prior art) Fig. 3 is a sectional view of a conventional electric drive device, Fig. 4 is a side view, Fig. 5 is a v-v vA sectional view of Fig. 3, and Fig. 6 is the same <■-vi In the line sectional view, 1 is an electric motor, and the output shaft thereof is equipped with a pinion 2.

3は第1の段付歯車で、その大歯車3aがビニオン2と
噛合い、小歯車3bが第2の段付歯車4の大歯車4aと
噛合い、その小歯車4bが出力歯車5と噛合っている。
3 is a first stepped gear, the large gear 3a of which meshes with the binion 2, the small gear 3b of which meshes with the large gear 4a of the second stepped gear 4, and the small gear 4b of which meshes with the output gear 5. ing.

そして上記ビニオン2、第1゜2の段付歯車3,4およ
び出力歯車5で減速歯車機構を構成している。6は一端
部に上記出力歯車5が装着され、他端面に磁気吸着面6
aを有するクラッチロータで、出力軸10に回転自在に
支軸されている。7はロータ6と対向したクラッチ可動
板であって、出力軸10に固着したフランジ9の側端部
にリターンばね8で取付けられている。
The pinion 2, the first degree stepped gears 3 and 4, and the output gear 5 constitute a reduction gear mechanism. The output gear 5 is attached to one end of the 6, and a magnetic adsorption surface 6 is attached to the other end.
The clutch rotor is rotatably supported by the output shaft 10. Reference numeral 7 denotes a clutch movable plate facing the rotor 6, and is attached to the side end of a flange 9 fixed to the output shaft 10 by a return spring 8.

11は上記クラッチロータ6に装着されたクラッチヨー
ク、12はヨークに巻装したコイルで、電磁クラッチ1
3の磁気回路を形成している。22は減速歯車機構側の
ハウジング、23は電動機l。
11 is a clutch yoke attached to the clutch rotor 6, 12 is a coil wound around the yoke, and the electromagnetic clutch 1
3 magnetic circuits are formed. 22 is a housing on the reduction gear mechanism side, and 23 is an electric motor l.

電磁クラッチ13側のハウジングである。14は出力軸
5の一端にナツト15で固定した回動レバーで、このレ
バーの溝14aに外部負荷駆動用のワイヤ16が巻付け
られている。17は第3図の矢印方向から見て回動レバ
ー14を時計方向に回転力を付勢するリターンばね、1
8は出力軸10と連動して回転し、回転角に対応して抵
抗値が変化するポテンショメータである。第4図におい
て19a、19bは回動レバー14の回転範囲を規制す
る制止部である。
This is the housing on the electromagnetic clutch 13 side. Reference numeral 14 denotes a rotary lever fixed to one end of the output shaft 5 with a nut 15, and a wire 16 for driving an external load is wound around a groove 14a of this lever. Reference numeral 17 denotes a return spring that applies rotational force to the rotary lever 14 in the clockwise direction when viewed from the direction of the arrow in FIG.
8 is a potentiometer that rotates in conjunction with the output shaft 10 and whose resistance value changes in accordance with the rotation angle. In FIG. 4, reference numerals 19a and 19b are stop portions that restrict the rotation range of the rotary lever 14. As shown in FIG.

次に動作について説明する。引出線20a20bより電
動機1に電圧が印加されると、これが回転駆動しその出
力はビニオン2第1および第2の段付歯車3.4を経て
出力歯車5へ伝達される。この状態で電磁クラッチ13
のコイル12が無通電状態であればクラッチロータ6は
出力軸10を空転し、出力軸10には回転力は伝わらな
い。
Next, the operation will be explained. When a voltage is applied to the electric motor 1 from the lead wire 20a20b, it rotates and its output is transmitted to the output gear 5 via the first and second stepped gears 3.4 of the pinion 2. In this state, the electromagnetic clutch 13
If the coil 12 is in a non-energized state, the clutch rotor 6 idles around the output shaft 10, and no rotational force is transmitted to the output shaft 10.

かくして、外部引出線21a、21bよりコイル12に
通電されるとクラッチ可動板7がロータ6に磁気吸着さ
れ、これによりロータ6の回転がクラッチ可動板7から
フランジ9を経て出力軸10を回転駆動する。ここで、
回動レバー14の所望の回転角(目標値)を制御回路(
図示せず)に入力すると、制御回路は電動機1を駆動し
電磁クラッチ13を介して出力軸IOを回転させる。出
力軸10の回転角はこれと連動して回転するポテンショ
メータ18の抵抗値変化により検出可能である。
In this way, when the coil 12 is energized from the external lead wires 21a and 21b, the clutch movable plate 7 is magnetically attracted to the rotor 6, whereby the rotation of the rotor 6 passes from the clutch movable plate 7, through the flange 9, and rotationally drives the output shaft 10. do. here,
The control circuit (
(not shown), the control circuit drives the electric motor 1 and rotates the output shaft IO via the electromagnetic clutch 13. The rotation angle of the output shaft 10 can be detected by a change in the resistance value of a potentiometer 18 that rotates in conjunction with the rotation angle.

また、制御回路は目標値とポテンショメータ18の抵抗
値(制御量)が一致した回転角で電動機1の駆動を停止
し、所望の回動レバー14の回転角が得られる。また、
目標値に達するまでの時間を短かくすれば回動レバー1
4の行き過ぎ量が大きくなるが、回動範囲の両端に設置
された制止部19a、19bにより制限される。
Further, the control circuit stops driving the electric motor 1 at a rotation angle at which the target value and the resistance value (control amount) of the potentiometer 18 match, and a desired rotation angle of the rotation lever 14 is obtained. Also,
If you shorten the time to reach the target value, the rotation lever 1
4 becomes large, but it is limited by the restraining parts 19a and 19b installed at both ends of the rotation range.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来の電動式駆動装置は以上のように構成されているの
で、回動レバー14が時計方向の回転時、レバーの行き
過ぎ量が大きく回動レバー14が制止部19aで制限さ
れた場合、電動機1の駆動トルクがリターンばね8を圧
縮する方向に作用し、この結果、リターンばね8を挫屈
変形させてしまうという課題があった。
Since the conventional electric drive device is configured as described above, when the rotary lever 14 rotates clockwise, if the lever moves too far and the rotary lever 14 is restricted by the stopper 19a, the electric motor 1 There is a problem in that the driving torque acts in a direction to compress the return spring 8, and as a result, the return spring 8 is buckled and deformed.

この発明は上記のような課題を解消するためになされた
もので、リターンばねに作用する圧縮力を解消し電磁ク
ラッチの高信鎖化を実現することのできる電動式駆動装
置を得ることを目的とする。
This invention was made in order to solve the above-mentioned problems, and the object is to obtain an electric drive device that can eliminate the compressive force acting on the return spring and realize a high reliability chain of an electromagnetic clutch. .

〔課題を解決するための手段〕[Means to solve the problem]

この発明に係る電動式駆動装置は、電動機と、この電動
機の駆動力を複数の段付歯車を介して伝達する出力歯車
と、一端にこの出力歯車が結合され、他端に磁気吸着面
が設けられたクラッチロータと、このロータが回転自在
に支軸された出力軸と、出力軸にリターンばねで結合さ
れ、ロータの磁気吸着面と対向し、出力軸に固着したフ
ランジを介して設けたクラッチ可動板と、通電によりク
ラッチロータの磁気吸着面とクラッチ可動板を磁気結合
するクラッチコイルと、出力軸の一端に負荷駆動用ワイ
ヤを巻取り駆動するための回動レバーとを備えた電動式
駆動装置において、クラッチ可動板に回動レバーの回転
角を制限する制止用突出部を設け、この突出部をハウジ
ングに形成したストッパに当接するようにしたものであ
る。
The electric drive device according to the present invention includes an electric motor, an output gear that transmits the driving force of the electric motor via a plurality of stepped gears, the output gear is coupled to one end, and the other end is provided with a magnetic attraction surface. A clutch rotor that is attached to the rotor, an output shaft on which this rotor is rotatably supported, and a clutch that is connected to the output shaft with a return spring, faces the magnetic attraction surface of the rotor, and is provided via a flange that is fixed to the output shaft. An electric drive equipped with a movable plate, a clutch coil that magnetically connects the magnetic attraction surface of the clutch rotor and the clutch movable plate when energized, and a rotating lever for winding and driving a load drive wire at one end of the output shaft. In this device, a restraining protrusion for limiting the rotation angle of the rotary lever is provided on the clutch movable plate, and the protrusion comes into contact with a stopper formed on the housing.

〔作 用〕[For production]

この発明においては、回動レバーの回転角を制限する制
止用突出部をクラッチ可動板に設けたことで、電動機の
停止トルクがリターンばねに圧縮力となって作用するこ
とがなく、外部負荷による引張力がリターンばねに作用
するので、ばねの挫屈変形は生じることがない。
In this invention, by providing the clutch movable plate with a restraining protrusion that limits the rotation angle of the rotary lever, the stopping torque of the electric motor does not act on the return spring as a compressive force, and the Since the tensile force acts on the return spring, buckling deformation of the spring does not occur.

〔実施例〕〔Example〕

以下、この発明の一実施例を図について説明する。第1
図はこの発明による電動式駆動装置の側面図、第2図は
この発明による要部の側断面図を示すもので、第2図に
おいて、7aは電磁クラッチのクラッチ可動板7の外周
部に形成した制止用突部、23a、23bは回動レバー
14の回転角を制限するためにハウジング23に備えら
れ、上記制止用突部7aが当接するストッパである。な
お、図中その他の符号は従来例の場合と同一であるので
同一符号を付して説明は省略する。
An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a side view of the electric drive device according to the present invention, and Figure 2 is a side sectional view of the main parts according to the present invention. In Figure 2, 7a is formed on the outer peripheral part of the clutch movable plate 7 of the electromagnetic clutch The stopping protrusions 23a and 23b are provided on the housing 23 to limit the rotation angle of the rotating lever 14, and are stoppers against which the stopping protrusion 7a comes into contact. Note that other symbols in the figure are the same as those in the conventional example, so the same symbols are given and explanations are omitted.

次に動作について説明する。出力軸IOの目標値が回転
可能範囲の両端付近に設定され、そして回動レバー14
の行き過ぎ量が大の場合は、クラッチ可動板7の制止用
突部7aがハウジング23のストッパ23aまたは23
bに当接し、出力軸10の回転が規制される。この場合
、電動機の駆動トルクは図示しないピニオン、第1およ
び第2の段付歯車、出力歯車、クラッチロータに作用す
るが、リターンばね8には外部負荷による引張力のみが
作用し、圧縮する方向には作用しない、また、電磁クラ
ッチ13の伝達トルクを外部負荷駆動トルクより大きく
、歯車の許容曲げ応力、許容面圧応力以下の力が作用す
るトルクに設定する。
Next, the operation will be explained. The target value of the output shaft IO is set near both ends of the rotatable range, and the rotation lever 14
If the amount of overshoot is large, the stopping protrusion 7a of the clutch movable plate 7 will stop at the stopper 23a or 23 of the housing 23.
b, and the rotation of the output shaft 10 is restricted. In this case, the driving torque of the electric motor acts on the pinion (not shown), the first and second stepped gears, the output gear, and the clutch rotor, but only the tensile force due to the external load acts on the return spring 8, and the compressing direction acts on the return spring 8. In addition, the transmission torque of the electromagnetic clutch 13 is set to a torque that is larger than the external load driving torque and that causes a force that is less than the allowable bending stress and allowable surface pressure stress of the gear to act.

〔発明の効果〕〔Effect of the invention〕

以上説明したようにこの発明によれば、クラッチ可動板
に回動レバーの回転角を制限する制止用突出部を設け、
この突出部をハウジングに形成したストッパに当接する
ようにしたので、回動レバーが行き過ぎてクラッチ可動
板がストッパに当たって電動機の回転が制限されてもそ
の停止トルクがリターンばねに作用せず、これによって
リターンばねの挫屈変形を防止することができ、信転性
の高い電動式駆動装置となる。
As explained above, according to the present invention, the clutch movable plate is provided with a restraining protrusion that limits the rotation angle of the rotary lever,
Since this protrusion comes into contact with a stopper formed on the housing, even if the rotary lever goes too far and the clutch movable plate hits the stopper, limiting the rotation of the motor, the stopping torque will not act on the return spring. It is possible to prevent buckling deformation of the return spring, resulting in an electric drive device with high reliability.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例による電動式駆動装置の側
面図、第2図はこの発明の要部の側断面図、第3図は従
来の電動式駆動装置の断面図、第4図は同じく側面図、
第5図は第3図の■−V線断面図、第6図は同じ< V
l−Vl線断面図である。 l・・・電動機、3・・・第1の段付歯車、4・・・第
2の段付歯車、5・・・出力歯車、6・・・クラッチロ
ータ、6a・・・磁気吸着面、7・・・クラッチ可動板
、7a・・・制止用突出部、8・・・リターンばね、1
2・・・クラッチコイル、13・・・電磁クラッチ、1
4・・・回動レバ22.23・/%ウジング、23a、
23b・・・ストッパ。 なお、図中同一符号は同−又は相当部分を示す。 第1図
FIG. 1 is a side view of an electric drive device according to an embodiment of the present invention, FIG. 2 is a side sectional view of essential parts of the invention, FIG. 3 is a sectional view of a conventional electric drive device, and FIG. 4 is also a side view,
Figure 5 is a sectional view taken along the ■-V line in Figure 3, and Figure 6 is the same <V
It is a sectional view taken along the line l-Vl. l... Electric motor, 3... First stepped gear, 4... Second stepped gear, 5... Output gear, 6... Clutch rotor, 6a... Magnetic attraction surface, 7... Clutch movable plate, 7a... Stopping protrusion, 8... Return spring, 1
2...Clutch coil, 13...Electromagnetic clutch, 1
4... Rotating lever 22.23/% Uzing, 23a,
23b...stopper. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 1

Claims (1)

【特許請求の範囲】[Claims]  電動機と、この電動機の駆動力を複数の段付歯車を介
して伝達する出力歯車と、一端にこの出力歯車が結合さ
れ、他端に磁気吸着面が設けられたクラッチロータと、
このロータが回転自在に支軸された出力軸と、この出力
軸にリターンばねで結合され、上記ロータの磁気吸着面
と対向するクラッチ可動板と、通電によりクラッチロー
タの磁気吸着面とクラッチ可動板を磁気結合するクラッ
チコイルと、出力軸の一端に負荷駆動用ワイヤを巻取り
駆動するための回動レバーを備えた電動式駆動装置にお
いて、上記クラッチ可動板の一部に制止用突出部を設け
、この突出部をハウジングに備えたストッパに当接する
ようにして回動レバーの回転角を制限したことを特徴と
する電動式駆動装置。
an electric motor, an output gear that transmits the driving force of the electric motor via a plurality of stepped gears, a clutch rotor to which the output gear is coupled at one end and a magnetic attraction surface is provided at the other end;
An output shaft on which this rotor is rotatably supported; a clutch movable plate connected to the output shaft by a return spring and facing the magnetic attraction surface of the rotor; In an electric drive device equipped with a clutch coil for magnetically coupling the motor and a rotary lever for winding and driving a load drive wire at one end of the output shaft, a part of the movable clutch plate is provided with a stopping protrusion. An electric drive device characterized in that the rotation angle of the rotary lever is limited by making the protrusion come into contact with a stopper provided on the housing.
JP63145168A 1988-06-08 1988-06-13 Motor-driven drive Pending JPH027850A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP63145168A JPH027850A (en) 1988-06-13 1988-06-13 Motor-driven drive
GB8911706A GB2219637B (en) 1988-06-08 1989-05-22 Electromagnetic clutch in motor-powered drive device
KR1019890007691A KR920000503B1 (en) 1988-06-08 1989-06-05 Motor
DE3918487A DE3918487A1 (en) 1988-06-08 1989-06-06 MOTOR DRIVE DRIVE DEVICE
US07/363,004 US4938327A (en) 1988-06-08 1989-06-08 Motor-powered drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63145168A JPH027850A (en) 1988-06-13 1988-06-13 Motor-driven drive

Publications (1)

Publication Number Publication Date
JPH027850A true JPH027850A (en) 1990-01-11

Family

ID=15379004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63145168A Pending JPH027850A (en) 1988-06-08 1988-06-13 Motor-driven drive

Country Status (1)

Country Link
JP (1) JPH027850A (en)

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