JPH0650358A - Torque limitter equipped with automatic reset function - Google Patents

Torque limitter equipped with automatic reset function

Info

Publication number
JPH0650358A
JPH0650358A JP4203715A JP20371592A JPH0650358A JP H0650358 A JPH0650358 A JP H0650358A JP 4203715 A JP4203715 A JP 4203715A JP 20371592 A JP20371592 A JP 20371592A JP H0650358 A JPH0650358 A JP H0650358A
Authority
JP
Japan
Prior art keywords
roller
surface
torque
cylindrical surface
retainer
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
JP4203715A
Other languages
Japanese (ja)
Inventor
Shoji Itomi
Masahiro Kurita
昌弘 栗田
正二 糸見
Original Assignee
Ntn Corp
エヌティエヌ株式会社
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 Ntn Corp, エヌティエヌ株式会社 filed Critical Ntn Corp
Priority to JP4203715A priority Critical patent/JPH0650358A/en
Publication of JPH0650358A publication Critical patent/JPH0650358A/en
Application status is Pending legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/04Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/06Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers
    • F16D7/10Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement

Abstract

PURPOSE:To immesiately transmit torque in the normal and reverse revolution directions, as for a torque limitter equipped with automatic reset function for carrying out the torque transmission by the engagement of an engagement element between a cam surface made of elastic member and a cylindrical surface. CONSTITUTION:A cylindrical surface 5 is formed on an inner race 1, and a cam surface 9 consisting of a polygonal leaf spring 7 is formed on an outer race 2, and a roller 13 is assembled in a retainer 14 installed between the inner and outer races. A recessed place 10 for the fitting of the roller 13 is formed at the center of each side of the leaf spring 7, and each min. gap (a), (a) for the engagement of the roller is formed on both the sides of the recesed place 10. With this structure, a torque is transmitted when the leaf spring 7 is deformed and the roller 13 slips off from the recessed place 10, and after the roller 13 slips off from the recessed place 10, the retainer 14 performs rolling movement around the annular part of the outer race 2, and a creep is generated, and the roller 13 is shifted to the next recessed place at a low speed.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】この発明は、自動復帰する機能を備えたトルクリミッタに関するものである。 BACKGROUND OF THE INVENTION This invention relates to a torque limiter having a function of automatic return.

【0002】 [0002]

【従来の技術】小型船舶のプロペラ推進機や冷凍機コンプレッサの液圧回路などにおいては、従動側の過負荷に対して原動機側の動力伝達を切離し、従動側が正常状態に回復した場合は、自動的に元の状態に復帰してトルク伝達を繰り返すトルクリミッタが必要になる。 In the like BACKGROUND ART small watercraft propeller propulsion unit and refrigerator compressors hydraulic circuit, disconnect the power transmission from the prime mover side with respect to the driven side of the overload, if the driven side is recovered to the normal state, the automatic and returns to the original state becomes necessary torque limiter repeating torque transmission in manner.

【0003】また、上記のトルクリミッタでは、原動機側が高速度で回転している状態で、極めて短かい時間間隔で自動復帰が繰返されると、従動側に無理を強いることになるため、所定の長い時間間隔をおいて自動復帰する機能が求められる。 [0003] In the above torque limiter, with the prime mover is rotating at high speed, the automatic return in a very short time interval are repeated, since that would impose unreasonable driven, predetermined long function is required to be automatic return at a time interval.

【0004】従来、このような長い間隔をおいて自動復帰するトルクリミッタとして、本出願人が先に特願平4 Conventionally, Japanese Patent Application No. 4 as a torque limiter for automatic return at such long intervals, the present applicant previously
−111281号により提案したものがある。 There is a thing that was proposed by No. -111281.

【0005】この提案のものは、図8及び図9に示すように、内輪1と外輪2の対向する面に、円筒面5と、多角形の板バネ7から成るカム面9を形成し、内外輪1、 [0005] those in this proposal, as shown in FIGS. 8 and 9, on opposite sides of the inner ring 1 and outer ring 2, a cylindrical surface 5, the cam surface 9 consisting of polygonal leaf spring 7 is formed, the inner and outer rings 1,
2の間に設けた保持器14のポケットに、円筒面5とカム面9の最小すきま部に係合するローラ13を組込んでいる。 Pocket of the cage 14 provided between the 2 incorporates a roller 13 that engages the minimum gap portion of the cylindrical surface 5 and the cam surface 9.

【0006】また、保持器14と外輪2にそれぞれすき間をもって嵌合する円環部30、31を設け、内輪1と保持器14間に転動体32を組込み、その転動体32の圧入によって保持器14を転がり案内すると共に円環部30を径方向に変形させ、両円環部30、31を複数位置で接触させている。 Further, the retainer 14 and the respective outer ring 2 with a gap provided an annular portion 30, 31 for fitting, built a rolling element 32 between the inner ring 1 and the retainer 14, the retainer by press-fitting of the rolling elements 32 14 to deform the annular portion 30 in the radial direction together with the rolling guide to and contacting the two annular portions 30 and 31 at a plurality of positions.

【0007】上記の構造では、カム面9を形成する板ばね7が変形し、ローラ13が係合位置を通過すると、保持器14が内輪1からの回転荷重により外輪2の円環部31に対して転がり運動をしてクリープを起こし、ローラ13を低い速度で次の係合位置まで移動させる。 [0007] In the above structure, deforms the leaf spring 7 which forms a cam face 9, the roller 13 passes the engagement position, the retainer 14 to the annular portion 31 of the outer race 2 by the rotation load from the inner ring 1 creep by a rolling motion against to move the roller 13 at a low speed until the next engagement position.

【0008】 [0008]

【発明が解決しようとする課題】ところで、上記提案の構造においては、図9のようにローラ13がカム面9と円筒面5に当接した状態から内輪1が矢印方向に、すなわち最小すきま部に向かう方向に回転した場合、直ちにローラ13が噛み込んで外輪2にトルクを伝達できるが、上記とは逆方向に回転すると、クリープ現象によってローラ13が低速で次の係合位置まで移動するため、 [SUMMARY OF THE INVENTION Incidentally, in the structure of the proposed, in the arrow direction roller 13 is the inner ring 1 from the contact with the cam surface 9 and the cylindrical surface 5 as shown in FIG. 9, i.e. minimum gap portion when rotated in a direction towards the immediately but at the roller 13 bites can transmit torque to the outer ring 2, when the above counter-rotating, the roller 13 by creeping slow moving to the next engagement position ,
トルク伝達までに長い時間がかかることになる。 It takes a long time to torque transmission. しかし、ある種のトルクリミッタにおいては、駆動側が正逆方向いずれの方向に回転しても直ちに従動側にトルク伝達ができるような機能が求められる場合があり、上記の特性はそれらのリミッタに適用する上で問題がある。 However, in certain of the torque limiter, there is a case where the driving side functions as may immediately torque transmitted to the driven side rotating in either forward or reverse direction direction is determined, the above characteristics are applied to those limiter there is a problem on that in.

【0009】そこで、この発明は、駆動側の正逆方向の回転に対して直ちに従動側にトルク伝達を行なうことができ、しかもトルク伝達状態が切離された後は長い時間間隔をおいて再起動を繰り返すことができるトルクリミッタを提供することを目的としている。 [0009] Therefore, the invention can be carried out immediately torque transmitted to the driven side relative to the rotation of the forward and reverse direction of the drive side, yet at a long time interval after the torque transmission state is disconnected again and its object is to provide a torque limiter capable of repeated activation.

【0010】 [0010]

【課題を解決するための手段】上記の課題を解決するため、この発明は、内外に嵌合する軌道輪の対向面の一方に円筒面を、他方に上記円筒面に対して円周方向に傾斜する複数のカム面を形成し、上記両軌道輪間に設けた保持器に、上記円筒面とカム面の幅狭部に係合する係合子を組込むと共に、上記各カム面の表面を弾性材で形成し、上記保持器に、駆動側の軌道輪の回転を減速して保持器に伝達する減速手段を連結した自動復帰機能付トルクリミッタにおいて、上記各カム面の弾性材の表面に、 To solve the above object, according to an aspect of this invention, one the cylindrical surface of the opposing surface of the bearing ring to be fitted to the inside and outside, in the circumferential direction with respect to the cylindrical surface on the other forming a plurality of cam surfaces inclined, elastic retainers provided between the both raceway rings, with incorporation of the engaging element which engages the narrow portion of the cylindrical surface and the cam surface, the surface of each cam surface formed of wood, in the retainer, the automatic return function with torque limiter coupled deceleration means for transmitting to the retainer by decelerating the rotation of the bearing ring on the drive side, on the surface of the elastic material of the respective cam surfaces,
上記係合子が嵌まり込む凹所を設け、その凹所の両側に、円筒面との間で係合子が係合する幅狭部を形成したのである。 It said engaging member provided is fits writes recess, on both sides of the recess is the engaging element with the cylindrical surface to form a narrow portion for engagement.

【0011】 [0011]

【作用】上記の構造においては、凹所に嵌まり込んだ状態で係合子が正逆のいずれの方向に移動しても、凹所の両側の幅狭部に係合し、トルク伝達が行なわれる。 [Action] In the above structure, even when moving in any direction of the engaging element is normal and reverse in a state of fitted into the recess, engages in the narrow portion of the sides of the recess, takes place torque transmission It is.

【0012】また、係合子が上記幅狭部を通過すると、 [0012] In addition, when the engaging element is passing through the narrow portion,
保持器により次の凹所に向かって案内されるが、保持器が、減速手段により駆動側の軌道輪に対して減速されて回転駆動されるため、係合子は低速で移動し、長い時間をかけて次の凹所へ移動する。 While being guided toward the retainer to the next recess, since the cage is rotated at a reduced speed relative to the bearing ring on the driving side by the reduction means, the engaging element moves at a low speed, a long time over a period to move to the next recess.

【0013】 [0013]

【実施例】図1乃至図3は実施例のトルクリミッタを示す。 EXAMPLES 1 through 3 show a torque limiter examples. 図1及び図2に示すように、内輪1と外輪2は、一端が軸受3と係合部材18により、他端が軸受4と軸受箱23を介して回転自在に支持され、その両軸受3、4 As shown in FIGS. 1 and 2, the inner ring 1 and outer ring 2 has one end by the bearing 3 and the engaging member 18, the other end is rotatably supported through a bearing 4 and the bearing box 23, the dual-bearing 3 , 4
の案内により同軸上に保持されている。 It is held coaxially by the guide.

【0014】内輪1の中央部の外径面は円筒面5で形成され、その円筒面5に対向する外輪2の内径面には、円周方向に等間隔で8ケ所の切欠き6が形成されており、 [0014] outer diameter surface of the central portion of the inner ring 1 is formed by the cylindrical surface 5, on the inner surface of the outer ring 2 which is opposed to the cylindrical surface 5, notch 6 of 8 places at equal intervals in the circumferential direction is formed It has been,
その各切欠き6に、ほぼ正八角形のリング状をした板ばね7が組込まれている。 As each notch 6, the plate spring 7 is incorporated with a substantially regular octagonal ring.

【0015】この板ばね7は、8等分に分割されたばね板8で形成されており、その各ばね板8の内面が、内輪1の円筒面5との間でくさび形空間をなすカム面9を形成している。 [0015] The leaf spring 7 is formed by a spring plate 8 which is divided into eight equal, the inner surface of the respective spring plate 8, the cam surface forming a wedge-shaped space between the cylindrical surface 5 of the inner ring 1 to form a 9. また、上記各ばね板8は、外輪2の各切欠き6の間でわずかに締まり嵌めの状態で組込まれ、各ばね板8と外輪2の内径面との間には、ばね板8の変形を許容するぬすみ24が設けられている。 Also, each spring plate 8 is incorporated in the state of a slightly interference fit between each notch 6 of the outer ring 2, between each spring plate 8 and the inner diameter surface of the outer ring 2, the deformation of the spring plate 8 steal 24 is provided to allow.

【0016】上記各ばね板8の中央部には、外輪2に向かって山形に折り曲がる凹所10が形成され、その凹所10に、後述する係合子としてのローラ13が嵌まり込むようになっている。 [0016] the central portion of each spring plate 8 toward the outer ring 2 is formed a recess 10 that is bent in Yamagata, its recess 10, as fitted the roller 13 as engaging elements to be described later going on. 上記凹所9の内面は、円周方向に対して角度θで互いに逆方向に傾斜する傾斜面11、1 Inner surface of the recess 9, the inclined surfaces inclined in opposite directions to each other at an angle θ with respect to the circumferential direction 11,1
2で形成され、その両傾斜面11、12と円筒面5の間にローラ13が嵌合した状態で各ばね板8がわずかに撓み、弾性力によりローラ13を内輪1に向かって押し付けている。 Formed by 2, that in a state where the roller 13 is fitted between the two inclined surfaces 11 and 12 and the cylindrical surface 5 flex slightly each spring plate 8 is pressed against the roller 13 to the inner ring 1 by the elastic force . また、上記凹所10の両側と円筒面5との間には、カム面9と円筒面5の間での最小すきま部a、a Between the two sides and the cylindrical surface 5 of the recess 10, the minimum gap portion a between the cam surfaces 9 and the cylindrical surface 5, a
がそれぞれ形成されており、その最小すきま部a、aの寸法は、ローラ13の径寸法よりも小さく設定されている。 There are formed respectively, the minimum gap portion a, the size of a is set to be smaller than the diameter of the roller 13.

【0017】上記板ばね7と円筒面5の間には、保持器14が設けられ、その保持器14の周面に、カム面9と対応して等間隔で多数のポケット15が設けられており、その各ポケット15に、係合子としてのローラ13 [0017] During the plate spring 7 and the cylindrical surface 5, the retainer 14 is provided on the peripheral surface of the retainer 14, a number of pockets 15 equally spaced in correspondence with the cam surface 9 cage, to their respective pockets 15, roller as engaging elements 13
が組込まれている。 It is incorporated.

【0018】このローラ13の、外径寸法dは、カム面9と円筒面5間の最小すきま部a以外の間隙に対して小さく形成され、最小すき間部aの近傍でのみカム面9と円筒面5に係合するようになっており、また、ばね板8 [0018] The roller 13, the outer diameter d is formed smaller for the minimum gap portion clearance than a between the cam surfaces 9 and the cylindrical surface 5, the cam surface 9 and the cylindrical only in the vicinity of the minimum clearance portion a is adapted to engage the surface 5, also, the spring plate 8
がぬすみ24側に撓んだ時に、ばね板8と円筒面5間にできる間隔よりも小さく設定され、その間隔をローラ1 When the bent 24 side relief is set to be smaller than the interval as possible between the spring plate 8 and the cylindrical surface 5, the roller 1 and the distance
3が通過できるようになっている。 3 is made to pass through.

【0019】また、上記保持器14の先端部は軸受3側に突出し、その突出部分に内外輪と同軸の円環部材16 Further, the distal end portion of the retainer 14 protrudes into the bearing 3 side, the inner and outer rings coaxial annular member to the protruding portion 16
が連結されている。 There has been consolidated. この円環部材16は、その内径面と上記突出部分の外径面に設けた凹凸部17とを嵌合させて保持器14に締まり嵌めされており、その嵌合によって円環部材16と保持器14は、軸方向には移動不可であるが、回転方向には所定のトルクで相対回転可能なように連結されている。 The annular member 16 has its being interference fit retainer 14 and the inner diameter surface and a concave-convex portion 17 provided on the outer diameter surface of the projecting portion fitted, an annular member 16 by the engagement holding vessel 14 is in the axial direction is immovably, in the rotational direction is connected so as to be relatively rotated at a predetermined torque.

【0020】また、外輪2の先端部には、断面がL字形をした係合部材18が一体に圧入され、その係合部材1 Further, the distal end portion of the outer ring 2, the engagement member 18 which cross section is L-shaped is pressed together, the engaging members 1
8に、上記円環部材16の内側に嵌まり込む円環部19 8, annular portion 19 fitted on the inner side of the annular member 16
が形成されている。 There has been formed.

【0021】上記円環部材16と円環部19は、わずかなすき間δを介して嵌合しており、その嵌合すき間δ [0021] The annular member 16 and the circular portion 19 is fitted via a slight gap [delta], the fitting gap [delta]
は、円環部材16の内径寸法と円環部19の外径寸法の呼び径寸法Dに対して数百分の1以下の値で設定されている。 It is set a few hundred parts per following values ​​for the nominal diameter dimension D of the outer diameter of the inner diameter and the circular portion 19 of the annular member 16.

【0022】一方、上記円環部材16と内輪1の円筒面5との間には、図1及び図2に示すように円筒ころ軸受20が組込まれている。 On the other hand, between the cylindrical surface 5 of the circular member 16 and the inner ring 1, the cylindrical roller bearing 20 is incorporated as shown in FIGS. この円筒ころ軸受20は、環状のころ保持器21と、そのころ保持器21により円周方向に120度間隔で配置される3個の円筒ころ22とから成り、この円筒ころ22の転がりにより保持器14を内輪1に対して回転案内する。 The cylindrical roller bearing 20 is held by a retainer 21 annular rollers consists of three cylindrical rollers 22 for being disposed at 120 degree intervals in the circumferential direction by the roller cage 21, rolling of the cylindrical roller 22 the vessel 14 rotates the guide relative to the inner ring 1.

【0023】また、上記円筒ころ22の直径寸法は、円環部材16と内輪1との間の間隔より大きく、各円筒ころ22が円環部材16と内輪の間で圧入状態で組込まれるように設定されており、その円筒ころの圧入により、 Further, the diameter dimension of the cylindrical roller 22 is larger than the distance between the annular member 16 and the inner ring 1, so that each cylindrical roller 22 is incorporated in a press-fit state between the annular member 16 and the inner ring is set, by press-fitting of the cylindrical roller,
円環部材16が円筒ころ22を頂点として変形し、その変形部分で円環部材16が外輪2の円環部19と線接触するようになっている。 Deformed circular member 16 is a cylindrical roller 22 as the vertex, the annular member 16 is adapted to contact lines and the annular portion 19 of the outer ring 2 at the deformed portion.

【0024】この実施例のトルクリミッタは上記のような構造であり、次にその作用を説明する。 The torque limiter in this embodiment is a structure as described above, it will be described the actions.

【0025】内輪1を原動機側に、外輪2を従動側にそれぞれ連結し、図2及び図5に示すように板ばね7の各凹所10にローラ13が嵌まり込んだ状態で、外輪2を固定し、内輪1を左回りに回転させると、ローラ13が凹所10の左側の傾斜面11と円筒面5に噛み込んでストラト角θのクラッチが成立し、外輪2が内輪1と一体で回転する。 [0025] The inner ring 1 to the prime mover, the outer ring 2 respectively connected to the driven side, in a state where the crowded Mari roller 13 is fitted into each recess 10 of the leaf spring 7, as shown in FIGS. 2 and 5, the outer ring 2 were fixed, rotating the inner ring 1 counterclockwise, the roller 13 is left of the inclined surface 11 and the cylindrical surface 5 chewing crowded in clutch strut angle θ in the recess 10 is established, integral outer ring 2 and the inner ring 1 in the rotation. 逆に、図5の状態から内輪1が右回りに回転すると、凹所10の右側の傾斜面12と円筒面5の間にローラ13が噛み込み、ストラット角θのクラッチが成立する。 Conversely, the inner ring 1 from the state of FIG. 5 is rotated clockwise, while the right side of the inclined surface 12 and the cylindrical surface 5 of the recess 10 the roller 13 is caught, the clutch of the strut angle θ is established. すなわち、内輪1が左右いずれの方向に回転しても、クラッチが成立し直ちに外輪2にトルクを伝達することができる。 That is, even the inner ring 1 is rotated in the left or right direction, the clutch can be transmitted immediately torque to the outer ring 2 hold.

【0026】上記のクラッチの成立状態から、外輪2に負荷するトルクが大きくなると、図6に示すように板ばね7がぬすみ24側に撓み、ストラット角θの減少と共に負荷できるトルクが小さくなる。 [0026] From establishment state of the clutch, the torque load on the outer ring 2 is increased, flexure 24 side relief plate spring 7 as shown in FIG. 6, the torque can be loaded with decreasing strut angle θ decreases. そして、過負荷が継続すると、ローラ13が最小すきま部aを通過し、クラッチとして作用していた凹所10の外側に放出されてクラッチ機能を失う。 When the overload is continued, the roller 13 passes through the minimum gap portion a, is released to the outside of the recess 10 which has been acting as a clutch lose clutch function.

【0027】放出されたローラ13は、保持器14によって円周方向の動きが規制され、保持器14は円環部材16と円環部19を介して外輪2に接触し、回転に対して自由でないため、ローラ13と保持器14は内輪1の回転に伴って共回りしない。 The roller 13 is released, the circumferential movement is restricted by the retainer 14, the retainer 14 is in contact with the outer ring 2 through the annular member 16 and the circular portion 19, freely relative rotation because not, roller 13 and cage 14 is not rotating together with the rotation of the inner ring 1.

【0028】上記のトルク伝達が開放された状態で原動機側が回転を続け、内輪1と外輪2が相対回転すると、 The prime mover side continues to rotate in a state where the torque transmission is opened, the inner ring 1 and outer ring 2 are relatively rotated,
内輪1の回転荷重が円筒ころ22を介して円環部材16 Ring member 16 rotating load of the inner ring 1 via a cylindrical roller 22
に伝わる。 Transmitted to. このため、円環部材16が外輪2の円環部1 Therefore, the annular portion 1 of the annular member 16 is an outer ring 2
9の外径を中心にして内接転がり運動をし、クリープを生じる。 9 was inscribed rolling by movement about the outer diameter of, resulting in creep. すなわち、円環部材16の内側を円筒ころ22 That is, the cylindrical rollers inside the circular member 16 22
が一周した時、円環部材16と円環部19は嵌合すき間δに円周率πを乗じた量πδだけ相対回転する。 There when round, annular member 16 and the circular portion 19 rotates relative amount πδ multiplied by the circular constant π the fitting gap [delta]. この場合、前述したように嵌合すき間δの値を小さな値で設定してあるので、保持器14は内輪1の回転に対して低い速度で回転し、ローラ13を1回転当り微少な距離ずつ移動させる。 In this case, since is set at a small value the value of the fitting gap δ as described above, the retainer 14 is rotated at a low speed relative to the rotation of the inner ring 1, the roller 13 by a minute distance per revolution so moved. このため、従動側が異常事態で停止した後、長い時間をおいてローラ13が次の係合位置に致達することなり、十分な時間的余裕をもった自動復帰を繰り返すことができる。 Therefore, after the driven side is stopped in an abnormal situation, the roller 13 at a long time is possible to 致達 to the next engagement position, it is possible to repeat the automatic return with sufficient time allowance.

【0029】一方、ローラ13が次の凹所10に到達し、トルクの伝達が解放状態から連結状態になる際、ローラ13は一旦凹所10の両側の最小すきま部aを通過するが、この時に若干のトルクを伝達する。 On the other hand, the roller 13 reaches the next recess 10, when the transmission of torque in engaged status from a released state, the rollers 13 once passes through the minimum gap portion a on both sides of the recess 10, this to transmit at some of torque. そして、ローラ13が凹所10に入り、そこから抜け出すときに正規のトルク伝達能力を得、所定のトルクを伝達する。 Then, the roller 13 enters the recess 10, to obtain a regular torque capabilities when get out therefrom, transmitting a predetermined torque. したがって、ローラ13は正規の位置(凹所10を抜け出す位置)でトルクを伝達する前にクッション的なトルクの伝達能力を持つことになり、トルクを段階的に大きくして伝達できるため、円滑な伝達を行なうことができる。 Thus, the roller 13 because it will have a transmission capacity of cushion specific torque, increase the torque stepwise transmitted before transmitting torque the normal position (the recess 10 the escape position), smooth it can be performed transmission.

【0030】図7は他の実施例を示す。 FIG. 7 shows another embodiment. この例では、板ばね7を、ローラ13に向き合うばね板8aと、その背面に組込まれるばね板8bとで形成している。 In this example, the plate spring 7, are formed by a spring plate 8a facing the roller 13, a spring plate 8b incorporated in its rear. また、内側のばね板8aにローラ13が嵌まり込む凹所10を形成し、その凹所10の背面に外側のばね板8bを当接させている。 Also forms a Mari writing recess 10 fitting the roller 13 inside the spring plate 8a, it is brought into contact with the outside of the spring plate 8b on the rear of the recess 10.

【0031】この構造では、2枚のばね板8a、8bにより板ばね7全体の弾性力を大きくできるため、トルクの伝達能力を増大させることができる。 [0031] In this structure, the two spring plates 8a, because it can increase the elasticity of the entire leaf spring 7 by 8b, it is possible to increase the transmission capacity of the torque.

【0032】なお、上記の各実施例では、内輪1を駆動側に外輪2を従動側にしたが、逆に外輪2を駆動側にして内輪1を従動側にしても、上述と同じ作用を得ることができる。 [0032] In the above embodiments, although the outer ring 2 to the inner ring 1 to the drive side to the driven side, even if the inner ring 1 to the driven side by the outer ring 2 on the drive side in the reverse, the same effect as described above it is possible to obtain. また、円筒ころ22は、2個又は4個以上等間隔で組込むようにしてもよい。 Further, the cylindrical roller 22, may be incorporated at regular intervals two or four or more.

【0033】 [0033]

【効果】以上のように、この発明は、カム面を形成する弾性材の表面に係合子が嵌まり込む凹所を設け、その凹所を係合子が抜け出る際にトルクを伝達するようにしたので、駆動側の軌道輪がいずれの方向の回転に対しても直ちに従動側にトルクを伝達することができる。 [Effect] As described above, the present invention is a recess fits that engaging elements on the surface of the elastic material forming the cam surface is provided and adapted to transmit torque in the recess engaging member escape since, it is possible to raceway of the drive-side is transmitted immediately torque to the driven side with respect to the rotation in either direction.

【0034】また、トルク伝達が解放された状態では、 Further, in a state in which torque transmission is released,
減速手段により低速で係合子が移動するため、長い時間間隔をおいて再起動することができ、時間的余裕をもった自動復帰を繰り返すことができる。 Because engaging member at a low speed is moved by the reduction means, it is possible to restart at a long time interval, it is possible to repeat the automatic return with a time margin.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】実施例のトルクリミッタを示す断面図 Cross-sectional view showing the torque limiter of Figure 1 Example

【図2】図1のII−II線に沿った断面図 2 is a cross-sectional view taken along line II-II in FIG. 1

【図3】図1のIII −III 線に沿った断面図 3 is a cross-sectional view taken along a III -III line in FIG. 1

【図4】同上のクリープ発生部分を拡大して示す断面図 Enlarged cross-sectional view showing the creep generation portion of FIG. 4 Same as above

【図5】同上のクラッチ部分を拡大して示す断面図 Figure 5 is a cross-sectional view showing an enlarged coupling parts of the same

【図6】同上のクラッチの作用状態を示す断面図 6 is a sectional view showing an action state of the clutch of the same

【図7】他の実施例を示す断面図 7 is a cross-sectional view showing another embodiment

【図8】従来例を示す縦断正面図 Figure 8 is a longitudinal front view showing a conventional example

【図9】同上の縦断側面図 FIG. 9 is a longitudinal side view of the same

【符号の説明】 DESCRIPTION OF SYMBOLS

1 内輪 2 外輪 5 円筒面 7 板ばね 8 板ばね 9 カム面 10 凹所 11、12 傾斜面 13 ローラ 14 保持器 16 円環部材 19 円環部 8a、8b ばね板 a 最小すきま部 1 the inner ring 2 an outer ring 5 cylindrical surface 7 the plate spring 8 leaf spring 9 the cam surface 10 recess 11, 12 inclined surface 13 roller 14 retainer 16 annular member 19 annular parts 8a, 8b spring plate a minimum gap portion

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 内外に嵌合する軌道輪の対向面の一方に円筒面を、他方に上記円筒面に対して円周方向に傾斜する複数のカム面を形成し、上記両軌道輪間に設けた保持器に、上記円筒面とカム面の幅狭部に係合する係合子を組込むと共に、上記各カム面の表面を弾性材で形成し、 The method according to claim 1 wherein one the cylindrical surface of the opposing surface of the bearing ring to be fitted to the inside and outside, the other to form a plurality of cam surfaces which are inclined in the circumferential direction with respect to the cylindrical surface, between the two bearing rings to provided a cage, with incorporation of the engaging element which engages the narrow portion of the cylindrical surface and the cam surface, to form a surface of the respective cam surfaces of an elastic material,
    上記保持器に、駆動側の軌道輪の回転を減速して保持器に伝達する減速手段を連結した自動復帰機能付トルクリミッタにおいて、上記各カム面の弾性材の表面に、上記係合子が嵌まり込む凹所を設け、その凹所の両側に、円筒面との間で係合子が係合する幅狭部を形成したことを特徴とする自動復帰機能付トルクリミッタ。 In the retainer, the automatic return function with torque limiter coupled deceleration means for transmitting to the retainer by decelerating the rotation of the bearing ring on the drive side, on the surface of the elastic material of the respective cam surfaces, said engaging elements are engaged the Mari writing recesses provided on both sides of the recess, automatic return function with torque limiter, characterized in that engaging elements formed a narrow portion for engagement with the cylindrical surface.
  2. 【請求項2】 上記凹所の内面に、円周方向に対して互いに逆方向に傾斜する傾斜面を設けたことを特徴とする請求項1に記載の自動復帰機能付トルクリミッタ。 Wherein the inner surface of the recess, automatic return function with torque limiter according to claim 1, characterized in that a sloping surface inclined in opposite directions with respect to the circumferential direction.
JP4203715A 1992-07-30 1992-07-30 Torque limitter equipped with automatic reset function Pending JPH0650358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4203715A JPH0650358A (en) 1992-07-30 1992-07-30 Torque limitter equipped with automatic reset function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4203715A JPH0650358A (en) 1992-07-30 1992-07-30 Torque limitter equipped with automatic reset function

Publications (1)

Publication Number Publication Date
JPH0650358A true JPH0650358A (en) 1994-02-22

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ID=16478652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4203715A Pending JPH0650358A (en) 1992-07-30 1992-07-30 Torque limitter equipped with automatic reset function

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JP (1) JPH0650358A (en)

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