JPH10252772A - Power transmission mechanism - Google Patents
Power transmission mechanismInfo
- Publication number
- JPH10252772A JPH10252772A JP6342297A JP6342297A JPH10252772A JP H10252772 A JPH10252772 A JP H10252772A JP 6342297 A JP6342297 A JP 6342297A JP 6342297 A JP6342297 A JP 6342297A JP H10252772 A JPH10252772 A JP H10252772A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- power transmission
- pulley
- elastic body
- transmission mechanism
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
- F16H2035/103—Arrangements or devices for absorbing overload or preventing damage by overload with drive interruption by structural failure of overload preventing means, e.g. using shear pins
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧縮機、一般産業
用機器等のトルクリミッターとして使用する動力伝達機
構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission mechanism used as a torque limiter for a compressor, general industrial equipment and the like.
【０００２】[0002]
【従来の技術】まず、実公平６−３９１０５号公報に記
載された圧縮機の動力伝達機構について図５を参照して
説明する。2. Description of the Related Art First, a power transmission mechanism of a compressor described in Japanese Utility Model Publication No. 6-39105 will be described with reference to FIG.
【０００３】圧縮機２１のハウジング２２のフロントノ
ーズ２３に軸受２４を介してプーリ２５を回転可能に装
着する。圧縮機２１のシャフト２６に回転伝達板２７を
固定し、回転伝達板２７の４箇所に合成樹脂製の過負荷
可破断材２８を固定する。各過負荷可破断材２８の先端
をプーリ２５の４箇所に設けられた穴２５Ａにそれぞれ
挿入する。A pulley 25 is rotatably mounted on a front nose 23 of a housing 22 of a compressor 21 via a bearing 24. A rotation transmission plate 27 is fixed to a shaft 26 of the compressor 21, and an overload rupturable material 28 made of synthetic resin is fixed to four positions of the rotation transmission plate 27. The tip of each overload rupturable material 28 is inserted into each of the holes 25A provided at four places of the pulley 25.
【０００４】このように構成すると、圧縮機２１に異常
が発生し、回転伝達板２７に設定値を越えた回転力がか
かると、過負荷可破断材２８は破断する。したがって、
動力はプーリ２５から回転伝達板２７へ伝達されないの
で、動力伝達機構が保護される。With this configuration, when an abnormality occurs in the compressor 21 and a rotational force exceeding the set value is applied to the rotation transmission plate 27, the overload rupturable material 28 breaks. Therefore,
Since power is not transmitted from the pulley 25 to the rotation transmission plate 27, the power transmission mechanism is protected.
【０００５】次に、実開昭６３−１４２４６０号公報に
記載された圧縮機の動力伝達機構について図６を参照し
て説明する。Next, a power transmission mechanism of a compressor described in Japanese Utility Model Laid-Open Publication No. 63-142460 will be described with reference to FIG.
【０００６】圧縮機３１のハウジング３２のフロントノ
ーズ３３に軸受３４を介してプーリ３５を回転可能に装
着する。圧縮機３１のシャフト３６にハブ３７を固定
し、ハブ３７の４箇所にリベット３８を中心としてドラ
イブレバー３９を回転可能に取り付ける。ハブ３７の外
周には、４箇所の係合凹部３７Ａが設けられ、環状の金
属製板ばね４０がハブ３７の外周に係合凹部３７Ａに陥
入するように配設されている。各ドライブレバー３９の
内端円形係合部３９Ａは、板ばね４０を介してハブ３７
の各係合凹部３７Ａに係合し、各ドライブレバー３９の
外端円形係合部３９Ｂは、プーリ３５の各係合凹部３５
Ａに係合する。A pulley 35 is rotatably mounted on a front nose 33 of a housing 32 of the compressor 31 via a bearing 34. A hub 37 is fixed to a shaft 36 of the compressor 31, and a drive lever 39 is rotatably attached to four places of the hub 37 around a rivet 38. Four engagement recesses 37A are provided on the outer periphery of the hub 37, and an annular metal leaf spring 40 is disposed on the outer periphery of the hub 37 so as to be recessed into the engagement recess 37A. The inner circular engagement portion 39A of each drive lever 39 is connected to the hub 37 via a leaf spring 40.
And the outer circular engagement portion 39B of each drive lever 39 is engaged with each engagement recess 35 of the pulley 35.
A is engaged.
【０００７】このように構成すると、圧縮機３１に異常
が発生し、ハブ３７に設定値を越えた回転力がかかる
と、各ドライブレバー３９が各リベット３８を中心とし
て回転するから、各内端円形係合部３９Ａと各外端円形
係合部３９Ｂは、それぞれハブ３７の各係合凹部３７Ａ
とプーリ３５の各係合凹部３５Ａから離脱する。したが
って、動力はプーリ３５からハブ３７へ伝達されないの
で、動力伝達機構が保護される。With this configuration, when an abnormality occurs in the compressor 31 and a rotational force exceeding the set value is applied to the hub 37, the drive levers 39 rotate about the rivets 38. The circular engagement portion 39A and each outer end circular engagement portion 39B are respectively provided with each engagement recess 37A of the hub 37.
And the pulley 35 is disengaged from each engagement recess 35A. Therefore, power is not transmitted from the pulley 35 to the hub 37, so that the power transmission mechanism is protected.
【０００８】[0008]
【発明が解決しようとする課題】前記第１の従来の技術
では、圧縮機の駆動によって、繰り返し応力が過負荷可
破断材に発生し、破断回転力が一定値を維持し難く、経
時的に低下するという欠点がある。In the first prior art, when the compressor is driven, a repetitive stress is generated in the overloadable breakable material, and the breaking rotational force is difficult to maintain a constant value. There is a disadvantage that it decreases.
【０００９】前記第２の従来の技術は、部品点数が多
く、また、構造が複雑である。更に、ドライブレバーが
長いため、プーリ径の小型化が困難である。更に、圧縮
機の駆動によって、ドライブレバーには曲げ応力が加わ
るので、ドライブレバーの適宜な設計が困難である。The second prior art has a large number of parts and a complicated structure. Furthermore, since the drive lever is long, it is difficult to reduce the pulley diameter. Furthermore, since bending stress is applied to the drive lever by driving the compressor, it is difficult to appropriately design the drive lever.
【００１０】そこで、本発明は、前記従来の技術の欠点
を改良し、過負荷可破断材を採用せずに、構造が簡単で
コストが安価で、しかも、動力伝達の遮断の信頼性を有
する動力伝達機構を提供しようとするものである。Therefore, the present invention improves on the drawbacks of the above-mentioned prior art, and has a simple structure, low cost and reliability of shutting off power transmission without using an overload breakable material. It is intended to provide a power transmission mechanism.
【００１１】[0011]
【課題を解決するための手段】本発明は、前記課題を解
決するため、次の手段を採用する。The present invention employs the following means to solve the above-mentioned problems.
【００１２】（１）プーリと、前記プーリと同心に配置
されてシャフトに固定されたハブと、一端側に凸状係合
部を設けられ、かつ、前記プーリ又は前記ハブの一方に
回転可能に取り付けられたアームと、周縁に凹状係合部
を設けられ、かつ、前記プーリ又は前記ハブの他方に固
定された弾性体とを有し、前記凸状係合部と前記凹状係
合部とが係合し、動力伝達時における前記両係合部の圧
接箇所の少なくとも一部は前記シャフトの中心と前記ア
ームの回転中心を結ぶ直線から離れている動力伝達機
構。(1) A pulley, a hub disposed concentrically with the pulley and fixed to a shaft, and a convex engaging portion provided on one end side, and rotatable on one of the pulley or the hub. An attached arm, a concave engaging portion provided on a peripheral edge, and having an elastic body fixed to the other of the pulley or the hub, wherein the convex engaging portion and the concave engaging portion are A power transmission mechanism that is engaged and at least a part of a press-contact portion of the two engagement portions during power transmission is separated from a straight line connecting the center of the shaft and the rotation center of the arm.
【００１３】（２）前記アームが前記弾性体から離脱し
た状態で前記アームの回転を規制するストッパを有する
前記（１）記載の動力伝達機構。(2) The power transmission mechanism according to (1), further comprising a stopper for restricting rotation of the arm when the arm is detached from the elastic body.
【００１４】[0014]
【発明の実施の形態】本発明の一実施の形態例について
図１〜図４を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.
【００１５】図１と図２において、プーリ１の３箇所の
リベット挿入用穴１Ａには、それぞれアーム２とストッ
パ６がリベット７により取り付けられている。アーム２
は、その穴２Ａに嵌合するリベット７を中心として回転
可能であり、一端側に凸状係合部２Ｂを備えている。ば
ね材製のストッパ６には、折曲挿入部６Ａと折曲係止部
６Ｂが設けられ、折曲挿入部６Ａはプーリ１のストッパ
挿入用穴１Ｂに挿入固定され、折曲係止部６Ｂはアーム
２を係止することができる。シャフト３に固定されたハ
ブ４には、弾性体５が３本のリベット８により固定され
ている。弾性体５の周縁には、３箇所の凹状係合部５Ａ
が設けられている。アーム２の凸状係合部一端２Ｃと弾
性体５の凹状係合部一端５Ｂは、シャフト３の中心とア
ーム２の回転中心を結ぶ直線から離れた位置で接触す
る。1 and 2, an arm 2 and a stopper 6 are attached to three rivet insertion holes 1A of the pulley 1 by rivets 7, respectively. Arm 2
Is rotatable around a rivet 7 fitted in the hole 2A, and has a convex engaging portion 2B on one end side. A stopper 6 made of a spring material is provided with a bent insertion portion 6A and a bent engagement portion 6B. The bent insertion portion 6A is inserted and fixed in the stopper insertion hole 1B of the pulley 1, and the bent engagement portion 6B is provided. Can lock the arm 2. An elastic body 5 is fixed to the hub 4 fixed to the shaft 3 by three rivets 8. At the periphery of the elastic body 5, three concave engaging portions 5A are provided.
Is provided. One end 2C of the convex engaging portion of the arm 2 and one end 5B of the concave engaging portion of the elastic body 5 come into contact with each other at a position away from a straight line connecting the center of the shaft 3 and the rotation center of the arm 2.
【００１６】図３において、圧縮機１１のケーシング１
２の中央には、シャフト３が回転可能に支持され、シャ
フト３にハブ４がナット１３により固定されている。ま
た、ケーシング１２の端部付近の外周面に球軸受１４の
内輪が固定され、球軸受１４の外輪にプーリ１が固定さ
れている。In FIG. 3, the casing 1 of the compressor 11
A shaft 3 is rotatably supported at the center of 2, and a hub 4 is fixed to the shaft 3 by a nut 13. The inner race of the ball bearing 14 is fixed to the outer peripheral surface near the end of the casing 12, and the pulley 1 is fixed to the outer race of the ball bearing 14.
【００１７】プーリ１に外部の駆動源（図示せず）から
右方向の回転力が作用すると、アーム２はプーリ１と共
に回転しようとし、アーム２の凸状係合部一端２Ｃは弾
性体５の凹状係合部一端５Ｂを押圧するから、弾性体５
にたわみが発生する。回転力が設定値以下では、弾性体
５のたわみは、アーム２を弾性体５から離脱させないの
で、プーリ１とハブ４は同期回転する。When a rightward rotational force is applied to the pulley 1 from an external drive source (not shown), the arm 2 attempts to rotate with the pulley 1, and one end 2 C of the convex engaging portion of the arm 2 Since one end 5B of the concave engaging portion is pressed, the elastic body 5
Deflection occurs. When the rotational force is equal to or less than the set value, the deflection of the elastic body 5 does not cause the arm 2 to be detached from the elastic body 5, so that the pulley 1 and the hub 4 rotate synchronously.
【００１８】回転力が設定値を越えると、弾性体５のた
わみが増大し、アーム２はリベット７を中心として右回
転し、弾性体５の凹状係合部５Ａから離脱する。そし
て、図４に示されるように、アーム２は、ストッパ６の
折曲係止部６Ｂに係止されて弾性体５と接触しない位置
に保持される。When the rotational force exceeds the set value, the bending of the elastic body 5 increases, and the arm 2 rotates clockwise about the rivet 7 and separates from the concave engaging portion 5A of the elastic body 5. Then, as shown in FIG. 4, the arm 2 is locked by the bent locking portion 6 </ b> B of the stopper 6 and is held at a position where it does not contact the elastic body 5.
【００１９】本実施の形態例では、アーム２が動力伝達
不能位置に移動し、動力伝達が一旦遮断されても、スト
ッパ６の折曲係止部６Ｂをアーム２からはずすことによ
り、アーム２を動力伝達可能位置に簡単に復帰させるこ
とができる。In the present embodiment, even if the arm 2 moves to the power transmission disabled position and the power transmission is interrupted once, the arm 2 is detached from the arm 2 by bending and stopping the stopper 6B of the stopper 6. It can be easily returned to the power transmission possible position.
【００２０】[0020]
【発明の効果】以上の説明から明らかなように、本発明
によれば、次の効果を奏することができる。As is apparent from the above description, the present invention has the following advantages.
【００２１】（１）過負荷可破断材を採用しておらず、
構造が簡単でコストが安価である。(1) No overload breakable material is adopted,
The structure is simple and the cost is low.
【００２２】（２）回転力が設定値を越えた場合には、
アームが弾性体から離脱するので、動力伝達の遮断の信
頼性を向上することができる。また、騒音、発熱や振動
が発生しない。(2) If the torque exceeds the set value,
Since the arm is detached from the elastic body, the reliability of interruption of power transmission can be improved. Also, no noise, heat generation or vibration occurs.
【００２３】（３）動力伝達の遮断後、簡単な操作で動
力伝達の可能な状態に復旧することができ、また、部品
交換が不要である。(3) After shutting off the power transmission, it can be restored to a state in which the power can be transmitted by a simple operation, and there is no need to replace parts.
【図１】本発明の一実施の形態例の分解斜視図である。FIG. 1 is an exploded perspective view of an embodiment of the present invention.
【図２】本発明の一実施の形態例の動力伝達時の斜視図
である。FIG. 2 is a perspective view at the time of power transmission in one embodiment of the present invention.
【図３】本発明の一実施の形態例の動力伝達時の状態を
示し、（ａ）は正面図、（ｂ）は断面図である。3A and 3B show a state during power transmission according to an embodiment of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a cross-sectional view.
【図４】本発明の一実施の形態例の動力伝達の遮断時の
正面図である。FIG. 4 is a front view of the embodiment of the present invention when power transmission is cut off.
【図５】第１の従来の圧縮機の動力伝達機構を示し、
（ａ）は断面図、（ｂ）は要部の正面図、（ｃ）は要部
の断面図である。FIG. 5 shows a power transmission mechanism of a first conventional compressor,
(A) is a sectional view, (b) is a front view of a main part, and (c) is a cross-sectional view of a main part.
【図６】第２の従来の圧縮機の動力伝達機構を示し、
（ａ）は断面図、（ｂ）は正面図である。FIG. 6 shows a power transmission mechanism of a second conventional compressor,
(A) is a sectional view, and (b) is a front view.
１ プーリ １Ａ リベット挿入用穴 １Ｂ ストッパ挿入用穴 ２ アーム ２Ａ 穴 ２Ｂ 凸状係合部 ２Ｃ 凸状係合部一端 ３ シャフト ４ ハブ ５ 弾性体 ５Ａ 凹状係合部 ５Ｂ 凹状係合部一端 ６ ストッパ ６Ａ 折曲挿入部 ６Ｂ 折曲係止部 ７ リベット ８ リベット １１ 圧縮機 １２ ケーシング １３ シャフト １４ 球軸受 REFERENCE SIGNS LIST 1 pulley 1A rivet insertion hole 1B stopper insertion hole 2 arm 2A hole 2B convex engagement portion 2C one end of convex engagement portion 3 shaft 4 hub 5 elastic body 5A concave engagement portion 5B one end of concave engagement portion 6 stopper 6A Bend insertion part 6B Bend engagement part 7 Rivet 8 Rivet 11 Compressor 12 Casing 13 Shaft 14 Ball bearing
Claims (2)
てシャフトに固定されたハブと、一端側に凸状係合部を
設けられ、かつ、前記プーリ又は前記ハブの一方に回転
可能に取り付けられたアームと、周縁に凹状係合部を設
けられ、かつ、前記プーリ又は前記ハブの他方に固定さ
れた弾性体とを有し、前記凸状係合部と前記凹状係合部
とが係合し、動力伝達時における前記両係合部の圧接箇
所の少なくとも一部は前記シャフトの中心と前記アーム
の回転中心を結ぶ直線から離れていることを特徴とする
動力伝達機構。1. A pulley, a hub arranged concentrically with the pulley and fixed to a shaft, a convex engaging portion provided on one end side, and rotatably attached to one of the pulley or the hub. And an elastic body provided with a concave engaging portion on the periphery and fixed to the other of the pulley or the hub, wherein the convex engaging portion and the concave engaging portion are engaged. A power transmission mechanism, wherein at least a part of the pressure contact portion of the two engaging portions during power transmission is away from a straight line connecting the center of the shaft and the rotation center of the arm.
態で前記アームの回転を規制するストッパを有すること
を特徴とする請求項１記載の動力伝達機構。2. The power transmission mechanism according to claim 1, further comprising a stopper for restricting rotation of the arm when the arm is detached from the elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6342297A JPH10252772A (en) | 1997-03-17 | 1997-03-17 | Power transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6342297A JPH10252772A (en) | 1997-03-17 | 1997-03-17 | Power transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10252772A true JPH10252772A (en) | 1998-09-22 |
Family
ID=13228847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6342297A Pending JPH10252772A (en) | 1997-03-17 | 1997-03-17 | Power transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10252772A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6471024B2 (en) | 2000-03-29 | 2002-10-29 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Torque limiting mechanism |
| WO2003040579A1 (en) * | 2001-11-09 | 2003-05-15 | Ogura Clutch Co., Ltd. | Power transmission mechanism |
| CN100351540C (en) * | 2004-04-30 | 2007-11-28 | 三电有限公司 | Power transmission device |
| KR100837327B1 (en) * | 2002-02-25 | 2008-06-12 | 한라공조주식회사 | Structure for intercepting power trance of clutchless compressor |
| KR100885377B1 (en) * | 2002-10-24 | 2009-02-26 | 한라공조주식회사 | Clutchless Compressor with Parting Part |
| US7540719B2 (en) | 2002-10-21 | 2009-06-02 | Calsonic Kansei Corporation | Power transmission and compressor |
-
1997
- 1997-03-17 JP JP6342297A patent/JPH10252772A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6471024B2 (en) | 2000-03-29 | 2002-10-29 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Torque limiting mechanism |
| WO2003040579A1 (en) * | 2001-11-09 | 2003-05-15 | Ogura Clutch Co., Ltd. | Power transmission mechanism |
| KR100837327B1 (en) * | 2002-02-25 | 2008-06-12 | 한라공조주식회사 | Structure for intercepting power trance of clutchless compressor |
| US7540719B2 (en) | 2002-10-21 | 2009-06-02 | Calsonic Kansei Corporation | Power transmission and compressor |
| KR100885377B1 (en) * | 2002-10-24 | 2009-02-26 | 한라공조주식회사 | Clutchless Compressor with Parting Part |
| CN100351540C (en) * | 2004-04-30 | 2007-11-28 | 三电有限公司 | Power transmission device |
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