JPH0323771B2 - - Google Patents
Info
- Publication number
- JPH0323771B2 JPH0323771B2 JP23217982A JP23217982A JPH0323771B2 JP H0323771 B2 JPH0323771 B2 JP H0323771B2 JP 23217982 A JP23217982 A JP 23217982A JP 23217982 A JP23217982 A JP 23217982A JP H0323771 B2 JPH0323771 B2 JP H0323771B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- groove
- coupling portion
- torque
- spring receiver
- 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.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
- F16D7/06—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Description
【発明の詳細な説明】
本発明は、例えばインデツクステーブルの出力
軸に取付け、被駆動側に異常負荷が発生した場合
に駆動力を被駆動側へ伝達するのを防止してイン
デツクス等の装置類に生じる過負荷を防止する場
合等に使用するのに適したトルク制限装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a device such as an index table that can be attached to the output shaft of an index table to prevent the driving force from being transmitted to the driven side when an abnormal load occurs on the driven side. The present invention relates to a torque limiting device suitable for use in cases such as preventing overloads occurring in similar applications.
最近、自動組立、加工機械の精度向上の要求に
ともないインデツクステーブルの割出し精度の要
求も高まり、過負荷防止に用いるトルク制限装置
の高精度の回転伝達を損うバツクラツシユすなわ
ち駆動側部材と被駆動側部材との間の遊びが問題
になつている。このようなバツクラツシユ除去対
策として、例えば特公昭55−21896号公報のよう
に中空ローラを用いたものもあるが、中空ローラ
を変形させるには大きな力が必要であり、伝達ト
ルクが小さい場合バツクラツシユを除去できない
問題があつた。 Recently, with the demand for improved precision of automatic assembly and processing machines, the demand for index table indexing precision has also increased, and backlash, which impairs the high-precision rotational transmission of the torque limiting device used to prevent overload, is a problem that can occur between the drive side member and the Play between the drive side member and the drive side member has become a problem. As a measure to remove such backlash, for example, there is a method using a hollow roller as in Japanese Patent Publication No. 55-21896, but a large force is required to deform the hollow roller, and if the transmitted torque is small, backlash is not possible. There was a problem that could not be removed.
本発明の目的は、バツクラツシユを自己調整し
て常に零にできしかも伝達トルクが小さい場合に
も使用可能なトルク制限装置を提供することであ
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide a torque limiting device that can self-adjust the backlash to always bring it to zero and can be used even when the transmitted torque is small.
本発明は、互いに隣接して相対回転可能に設け
られた第１の部材と第２の部材とを備え、該部材
の一方に所定以上の負荷が加わつたとき両者が相
対回転するトルク制限装置において、該第１の部
材の半径方向に伸びるカツプリング部の外周には
底面が該第２の部材と反対側に向かつて半径方向
内側に傾斜しかつ該カツプリング部の外周面及び
該第２の部材と反対側の側面に開口する溝を形成
し、該溝内には該底面に接した状態で該外周面又
は該側面から突出し得る複数の可動ボールを該底
面に沿つて移動可能に円周方向に並べて設け、該
第２の部材の該カツプリング部を囲む環状突起の
内周には該第１の部材の溝に対応する位置に溝を
形成し、該第２の部材の溝内には該可動ボールと
係合するローラを設けて該第２の部材の溝内での
該ローラの円周方向の遊びをゼロとし、該カツプ
リング部の側面に隣接して該可動ボールを押圧す
るスラストプレートを配置し、該スラストプレー
トをばね受けを介してばねで該カツプリング部側
に弾圧し、それによつて該可動ボールを該ローラ
に弾圧させて該ローラを該第２の部材の溝の内面
に弾圧させて構成されている。 The present invention provides a torque limiting device that includes a first member and a second member that are provided adjacent to each other so as to be relatively rotatable, and in which both members rotate relative to each other when a predetermined load or more is applied to one of the members. , the outer periphery of the radially extending coupling portion of the first member has a bottom surface facing away from the second member and slanting radially inward, and the outer periphery of the coupling portion and the second member A groove is formed that opens on the opposite side surface, and in the groove, a plurality of movable balls that can protrude from the outer peripheral surface or the side surface while in contact with the bottom surface are movably circumferentially along the bottom surface. A groove is formed on the inner periphery of the annular protrusion surrounding the coupling portion of the second member at a position corresponding to the groove of the first member, and a groove is formed in the groove of the second member. A roller that engages with the ball is provided to eliminate circumferential play of the roller within the groove of the second member, and a thrust plate that presses the movable ball is arranged adjacent to a side surface of the coupling portion. and the thrust plate is pressed against the coupling part by a spring via a spring receiver, thereby causing the movable ball to be pressed against the roller, and the roller being pressed against the inner surface of the groove of the second member. It is configured.
本発明によるトルク制限装置は被駆動部材に所
定以上の負荷が加わつたとき可動ボールがばねの
押圧力に抗して溝の傾斜底面に沿つて半径方向内
方に移動し、駆動部材が被駆動部材に関して相対
的に回転する。 In the torque limiting device according to the present invention, when a load exceeding a predetermined value is applied to the driven member, the movable ball moves radially inward along the inclined bottom surface of the groove against the pressing force of the spring, and the driven member Rotate relative to the member.
以下、図面を参照して本発明の実施例について
説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図ないし第３図において本実施例によるト
ルク制限装置１が示されている。同図において２
は例えばモータ或は変速機の出力軸等の入力側に
接続される第１の部材すなわち駆動部材、３は出
力側に取り付けられる第２の部材すなわち被駆動
部材である。駆動部材のほぼ中央には環状のカツ
プリング部２１が形成されている。被駆動部材３
は、フランジ３１がそのカツプリング部２１に隣
接して一方（第２図で左方）のボス２２上に回転
可能に嵌められている。フランジ３１の外周には
駆動部材２のカツプリング部２１の外周を囲む環
状突起３２が一体成形されている。カツプリング
部２１と被駆動部材３との間には両者の相対回転
を容易にするために多数のスラストベアリング４
ａが配設されている。この被駆動部材３は駆動部
材２のボス２２に螺合された固定ナツト５により
スラストベアリング４ｂを介してカツプリング部
２１側に予め押圧されている。 1 to 3, a torque limiting device 1 according to this embodiment is shown. In the same figure, 2
3 is a first member, ie, a driving member, which is connected to the input side, such as the output shaft of a motor or a transmission, and 3 is a second member, ie, a driven member, which is attached to the output side. An annular coupling portion 21 is formed approximately in the center of the drive member. Driven member 3
The flange 31 is rotatably fitted onto one (left side in FIG. 2) of the bosses 22 adjacent to the coupling portion 21 thereof. An annular projection 32 surrounding the outer periphery of the coupling portion 21 of the drive member 2 is integrally formed on the outer periphery of the flange 31 . A large number of thrust bearings 4 are provided between the coupling portion 21 and the driven member 3 to facilitate relative rotation between the two.
a is arranged. This driven member 3 is pressed in advance toward the coupling portion 21 via a thrust bearing 4b by a fixing nut 5 screwed onto the boss 22 of the driving member 2.
カツプリング部２１の外周には複数の溝２４が
後述する理由で円周方向に不等間隔で形成されて
いる。溝２４の底面２５は被駆動部材とは反対方
向に向つて半径方向内側に傾斜している。被駆動
部材３の環状突起３２の内周面にはほぼ半橢円状
の底部とそれに続く傾斜面３５により形成される
溝２４に対応する同数の溝３４が形成されてい
る。各溝内には円筒状ローラ６が嵌合され出口部
に嵌められた止め輪６ａにより溝内に保持されて
いる。駆動部材２の各溝２４内にはローラ６と係
合する複数（本実施例で２個）の可動ボール７が
挿入されている。可動ボールはカツプリング部の
側面より常に突出し得る大きさになつている。 A plurality of grooves 24 are formed on the outer periphery of the coupling portion 21 at irregular intervals in the circumferential direction for reasons described later. The bottom surface 25 of the groove 24 slopes radially inward in a direction opposite to the driven member. The same number of grooves 34 are formed on the inner circumferential surface of the annular projection 32 of the driven member 3, corresponding to the grooves 24 formed by the substantially semi-circular bottom and the sloped surface 35 following the bottom. A cylindrical roller 6 is fitted into each groove and held within the groove by a retaining ring 6a fitted at the outlet. A plurality of (two in this embodiment) movable balls 7 that engage with the rollers 6 are inserted into each groove 24 of the drive member 2 . The movable ball is sized so that it can always protrude from the side surface of the coupling part.
カツプリング部２１の反被駆動部材側には可動
ボール７と係合する環状のスラストプレート８が
設けられ、更にその外側には多数のスラストベア
リング４ｃを間に挾んでばね受９が設けられてい
る。ばね受９は、駆動部材２に固定された複数の
ピン９１により、その駆動部材と共に回転するが
それに関して軸方向に相対移動可能に取り付けら
れている。 An annular thrust plate 8 that engages with the movable ball 7 is provided on the opposite side of the coupling portion 21 to the driven member, and a spring receiver 9 is provided outside of the annular thrust plate 8 with a number of thrust bearings 4c interposed therebetween. . The spring bearing 9 is mounted by a plurality of pins 91 fixed to the drive member 2 so as to rotate together with the drive member but to be movable relative to it in the axial direction.
駆動部材２の他方のボス２３にはカラー１０が
移動可能に嵌められ、更にそのカラー１０の外側
には調整ナツト１１がボス２３のねじに螺合され
ている。カラー１０の外側には調整ナツト１１と
ばね受９との間に複数の皿ばね１２が配設され、
そのばねによりばね受９、スラストプレート８を
介して可動ボール７を被駆動部材側に弾圧するよ
うになつている。 A collar 10 is movably fitted into the other boss 23 of the drive member 2, and an adjustment nut 11 is screwed onto the thread of the boss 23 on the outside of the collar 10. A plurality of disc springs 12 are disposed on the outside of the collar 10 between an adjustment nut 11 and a spring receiver 9,
The spring presses the movable ball 7 toward the driven member via the spring receiver 9 and the thrust plate 8.
ばね受９には皿ばねを囲む環状の目盛板９２が
一体的に形成され、その目盛板の外周にはトルク
の値を示す目盛が記入されている。また、調整ナ
ツト１１にはインジケータ１３が固定されてい
る。このインジケータは目盛板と協働して調整ナ
ツト１１で設定したトルクの値を示すようになつ
ている。 An annular scale plate 92 surrounding the disc spring is integrally formed on the spring receiver 9, and a scale indicating torque values is written on the outer periphery of the scale plate. Further, an indicator 13 is fixed to the adjustment nut 11. This indicator cooperates with a scale plate to indicate the torque value set by the adjusting nut 11.
被駆動部材３の溝３４の底部の断面形状は半円
よりも深さが深い、わずかに半橢円状になつてい
てローラが直径方向に対向する２箇所で被駆動部
材と接触し、ローラと被駆動部材との間に遊びが
ないようにしている。またローラ６および可動ボ
ール７の大きさ、駆動部材の溝２４の幅等は、無
負荷時に可動ボール７がばね１２により傾斜底面
に沿つて半径方向外方に押圧されたとき、二つの
可動ボール７が溝の側面２６に当接し、それによ
つて駆動部材と被駆動部材との間にバツクラツシ
ユすなわち遊びが生じないように決定されてい
る。 The cross-sectional shape of the bottom of the groove 34 of the driven member 3 is deeper than a semicircle and has a slightly semicircular shape, so that the roller contacts the driven member at two diametrically opposed points, and the roller There is no play between the drive member and the driven member. The sizes of the roller 6 and movable ball 7, the width of the groove 24 of the drive member, etc. are such that when the movable ball 7 is pressed radially outward along the inclined bottom surface by the spring 12 under no load, the two movable balls 7 abut against the side surfaces 26 of the groove, so that no backlash or play occurs between the driving member and the driven member.
更に、複数個の溝２４，３４は全ての溝で可動
ボール７とローラ６とが係合するのは、駆動部材
が被駆動部材に関して１回転（360゜）する間に１
回しかないように、円周方向に不等間隔に形成さ
れている。これは、トルク制限装置がインデツク
ス装置に使用された場合に入力側と出力側との間
の位置ずれが生じるのを防止するためである。し
たがつて、入力側と出力側との位置ずれが問題と
ならない場合、例えばベルトプーリ、チエーンス
プロケツト等に取り付けて使用する場合には等間
に形成してもよい。 Furthermore, the movable ball 7 and the roller 6 engage with each other once during one rotation (360 degrees) of the driving member relative to the driven member.
They are formed at irregular intervals in the circumferential direction so that there is no rotation. This is to prevent positional deviation between the input side and the output side when the torque limiting device is used in an indexing device. Therefore, when the positional deviation between the input side and the output side is not a problem, for example, when used by attaching to a belt pulley, chain sprocket, etc., it may be formed equally spaced.
なお、１５は被駆動部材に過負荷が作用してば
ね受が軸方向に移動したときにそのことを検出す
るリミツトスイツチである。 Note that 15 is a limit switch that detects when an overload is applied to the driven member and the spring bearing moves in the axial direction.
上記構成のトルク制限装置において、被駆動部
材側に過負荷が作用していないとき駆動部材２と
被駆動部材３とはローラ６および可動ボールを介
して互いに連結され、両者は一体に回転する。し
たがつて、駆動部材２からのトルクは被駆動部材
３に伝達される。 In the torque limiting device configured as described above, when no overload is applied to the driven member side, the driving member 2 and the driven member 3 are connected to each other via the roller 6 and the movable ball, and they rotate together. Therefore, torque from the driving member 2 is transmitted to the driven member 3.
被駆動部材に加わる負荷が一定値以上になる
と、例えば駆動部材２が第５図において時計回り
方向に回転しているとすると、被駆動部材の回転
は阻止されるため、一方（左側）の可動ボール７
はローラ６によりまた他方の可動ボールは溝３４
の傾斜面３５により、ばね１２の押圧力に抗して
溝２４の傾斜底面２５に沿つて半径内方に押さ
れ、駆動部材２は被駆動部材３に間して相対回転
する。したがつて、駆動部材のトルクは被駆動部
材に伝達されない。 When the load applied to the driven member exceeds a certain value, for example, if the driving member 2 is rotating clockwise in FIG. ball 7
is moved by the roller 6 and the other movable ball is moved by the groove 34.
The driving member 2 is pushed radially inward by the inclined surface 35 of the groove 24 along the inclined bottom surface 25 of the groove 24 against the pressing force of the spring 12, and the driving member 2 rotates relative to the driven member 3. Therefore, the torque of the driving member is not transmitted to the driven member.
可動ボール７がばねに抗して押されるとスラス
トプレート８およびばね受９は第４図に示される
ように軸方向に右方に移動する。このためリミツ
トスイツチ１５が動作し、異常動作を検出する。 When the movable ball 7 is pushed against the spring, the thrust plate 8 and the spring receiver 9 move axially to the right as shown in FIG. Therefore, the limit switch 15 operates and detects abnormal operation.
なお、ローラ６は溝３５の半橢円状部分に圧入
打込みしてもよい。 Note that the roller 6 may be press-fitted into the semi-circular portion of the groove 35.
上記のようなトルク制限装置は第６図Ａに示さ
れるように、インデツクス装置１００の出力軸１
０１とテーブル１０２との間に、被駆動部材３を
テーブル１０２に固定するようにして使用した
り、或は第６図Ｂに示されるように、駆動軸２０
１の駆動ベルトプーリまたはチエーンスプロケツ
ト２０２との間に、被駆動部材３をベルトプーリ
側に固定するようにして使用される。そしてテー
ブル或はプーリ等に過負荷が作用したとき、それ
らにトルクが伝達されないようにする。 As shown in FIG. 6A, the torque limiting device described above is connected to the output shaft 1 of the indexing device 100
01 and the table 102 so that the driven member 3 is fixed to the table 102, or as shown in FIG. 6B, the drive shaft 20
1 drive belt pulley or chain sprocket 202, and the driven member 3 is fixed to the belt pulley side. Then, when an overload is applied to the table, pulley, etc., torque is not transmitted to them.
第７図において本発明の他の実施例が示されて
いる。この実施例のトルク制限装置１′は被駆動
部材の中心軸線が駆動部材の中心軸線に関してわ
ずかに傾斜できるとともに被駆動部材が駆動部材
に関して軸方向にわずかに移動できるようになつ
ている点で前記の実施例と異なる。なお、前記実
施例と共通する部分については同じ参照番号でダ
ツシユを付して表わし、構造、作用の説明は省略
する。 Another embodiment of the invention is shown in FIG. The torque limiting device 1' of this embodiment is such that the central axis of the driven member can be tilted slightly with respect to the central axis of the driving member, and the driven member can be moved slightly in the axial direction with respect to the driving member. This is different from the embodiment. It should be noted that the parts common to the above embodiments will be designated by the same reference numerals with dashes, and a description of the structure and operation will be omitted.
第２の部材すなわち駆動部材２′にはカツプリ
ング部２１′の一方（左方）にボスが形成されて
おらず、したがつて、被駆動部材３′は駆動部材
に支持されていず単にローラ６′および可動ボー
ル７′を介してそれと係合し、トルクが伝達され
るようになつている。 The second member, that is, the driving member 2' does not have a boss formed on one (left side) of the coupling portion 21', and therefore the driven member 3' is not supported by the driving member and is simply attached to the roller 6. ' and a movable ball 7' to engage with it through which torque is transmitted.
この実施例のトルク制限装置では被駆動部材と
駆動部材とはローラと可動ボールとの点接触であ
るから被駆動部材は駆動部材に関してわずかに傾
斜でき、しかもローラと可動ボールとの間の相対
移動（駆動部材の軸線方向の）ができるので駆動
および被駆動両部材間で、ローラと可動ボールの
係合が外れない範囲内で、軸方向相対移動もでき
る。 In the torque limiting device of this embodiment, since the driven member and the driving member are in point contact with the roller and the movable ball, the driven member can be tilted slightly with respect to the driving member, and the relative movement between the roller and the movable ball is (in the axial direction of the driving member), relative movement in the axial direction is also possible between the driving and driven members within a range where the roller and the movable ball do not come out of engagement.
本発明によるトルク制限装置では次の様な効果
を奏することができる。 The torque limiting device according to the present invention can provide the following effects.
(イ) 駆動部材の溝内に可動ボールを入れ、溝の傾
斜底面、ばねで押圧されるスラストプレートお
よびローラの作用により可動ボールを溝の側面
に圧着させるため、溝をそれぞれ精密加工しな
くても、駆動部材と被駆動部材との遊びを零に
することができる。(a) The movable ball is placed in the groove of the drive member, and the movable ball is pressed against the side surface of the groove by the action of the sloped bottom surface of the groove, the thrust plate pressed by the spring, and the roller, so each groove must be precisely machined. Also, the play between the driving member and the driven member can be reduced to zero.
(ロ) 従来の中空ローラベアリングは市販がなく特
注となるため高価となるが、本発明では市販の
ローラすなわち円筒コロ、ボールベアリングを
使用できるので安価にできる。(b) Conventional hollow roller bearings are expensive because they are not commercially available and must be custom-made, but in the present invention, commercially available rollers, ie, cylindrical rollers, and ball bearings can be used, so the cost can be reduced.
(ハ) 大きな力を受ける部分を全て焼入したベアリ
ング類にすることによりばらつきを少なくしか
つ耐久性を増加でき、しかも小型化できる。(c) By using hardened bearings for all parts that receive large forces, variations can be reduced, durability can be increased, and the size can be reduced.
更に、実施例の装置では、
(i) 目盛板およびインジケータによりトルク設定
を容易にできる、
(ii) 異常動作を電気的に検出できる、
(iii) 駆動部材の軸心と被駆動部材の軸心とが相対
的にわずかに傾斜および延長できるので、駆動
側装置と被駆動側装置の取付け時の角度誤差お
よび軸方向位置誤差を吸収できる、
等の効果を奏し得る。 Further, in the device of the embodiment, (i) torque setting can be easily performed using a scale plate and an indicator, (ii) abnormal operation can be detected electrically, and (iii) the axis of the driving member and the axis of the driven member can be easily adjusted. Since these can be relatively slightly inclined and extended, it is possible to absorb angular errors and axial positional errors when the driving side device and the driven side device are attached.
なお、前記二つの実施例においては部材２，
２′を駆動部材とし部材３，３′を被駆動部材とし
たが、逆に２，２′を被駆動部材として被駆動側
に接続しかつ３，３′を駆動部材として駆動側に
接続することができる。したがつて、この場合第
１の部材は部材３，３′を示し、第２の部材は部
材２，２′を示すことになる。 In addition, in the above two embodiments, the members 2,
2' is a driving member and members 3 and 3' are driven members, but conversely, 2 and 2' are connected to the driven side as driven members, and 3 and 3' are driving members and connected to the driving side. be able to. In this case, therefore, the first member represents the members 3, 3' and the second member represents the members 2, 2'.
第１図は本発明のトルク制限装置の一実施例の
端面図、第２図は第１図の線−に沿つた断面
図、第３図は第２図の線−に沿つて見た図、
第４図は第２図と同様の断面図であつて異なつた
動作状態を示す図、第５図は第３図と同様の図で
あつて異なつた動作状態を示す図、第６図はトル
ク制限装置の使用例を示す図、第７図は本発明の
他の実施例の半分の断面図である。
１，１′：トルク制限装置、２，２′：駆動部
材、２１，２１′：カツプリング部、２４，２
４′：溝、２５，２５′：傾斜底面、３，３′：被
駆動部材、３４，３４′：溝、６，６′：ローラ、
７，７′：可動ボール、８，８′：スラストプレー
ト、９，９′：ばね受、１１，１１′：調整ナツ
ト、１２，１２′：ばね。
FIG. 1 is an end view of one embodiment of the torque limiting device of the present invention, FIG. 2 is a sectional view taken along the line - of FIG. 1, and FIG. 3 is a view taken along the line - of FIG. 2. ,
Fig. 4 is a cross-sectional view similar to Fig. 2 but showing different operating states, Fig. 5 is a similar drawing to Fig. 3 but showing different operating states, and Fig. 6 is a diagram showing torque. FIG. 7 is a half sectional view of another embodiment of the present invention, showing an example of the use of the restriction device. 1, 1': Torque limiting device, 2, 2': Drive member, 21, 21': Coupling part, 24, 2
4': groove, 25, 25': inclined bottom surface, 3, 3': driven member, 34, 34': groove, 6, 6': roller,
7, 7': Movable ball, 8, 8': Thrust plate, 9, 9': Spring receiver, 11, 11': Adjustment nut, 12, 12': Spring.
Claims (1)
１の部材と第２の部材とを備え、該部材の一方に
所定以上の負荷が加わつたとき両者が相対回転す
るトルク制限装置において、該第１の部材の半径
方向に伸びるカツプリング部の外周には底面が該
第２の部材と反対側に向かつて半径方向内側に傾
斜しかつ該カツプリング部の外周面及び該第２の
部材と反対側の側面に開口する溝を形成し、該溝
内には該底面に接した状態で該外周面又は該側面
から突出し得る複数の可動ボールを該底面に沿つ
て移動可能に円周方向に並べて設け、該第２の部
材の該カツプリング部を囲む環状突起の内周には
該第１の部材の溝に対応する位置に溝を形成し、
該第２の部材の溝内には該可動ボールと係合する
ローラを設けて該第２の部材の溝内での該ローラ
の円周方向の遊びをゼロとし、該カツプリング部
の側面に隣接して該可動ボールを押圧するスラス
トプレートを配置し、該スラストプレートをばね
受けを介してばねで該カツプリング部側に弾圧
し、それによつて該可動ボールを該ローラに弾圧
させて該ローラを該第２の部材の溝の内面に弾圧
させることを特徴とするトルク制限装置。 ２ 該ばね受けが該スラストプレートと該ばねと
の間に該第１の部材を共に回転するが該第１の部
材に関して軸方向に移動するように設けられ、該
ばねの端部には該ばねの押圧量を調節する調整ナ
ツトを設け、該ばね受けと該スラストプレートと
の間には複数のスラストローラを設けたことを特
徴とする特許請求の範囲１に記載のトルク制限装
置。 ３ 該ばね受けには目盛板を設け、該調整ナツト
には該目盛板と協働してトルク量を表示するイン
ジケータを取り付けたことを特徴とする特許請求
の範囲２に記載のトルク制限装置。[Claims] 1. A first member and a second member that are provided adjacent to each other so as to be able to rotate relative to each other, and when a load of a predetermined value or more is applied to one of the members, the torque that causes the relative rotation of the two members. In the restriction device, the outer periphery of the radially extending coupling portion of the first member has a bottom surface facing away from the second member and slopes radially inward, and the outer periphery of the coupling portion and the second member. A groove is formed that opens on the side surface opposite to the member, and a plurality of movable balls that can protrude from the outer peripheral surface or the side surface while in contact with the bottom surface are arranged in the groove so as to be movable along the bottom surface. forming grooves at positions corresponding to the grooves of the first member on the inner periphery of the annular protrusions that are arranged side by side in the circumferential direction and surrounding the coupling portion of the second member;
A roller is provided in the groove of the second member to engage with the movable ball so that circumferential play of the roller in the groove of the second member is zero, and the roller is adjacent to a side surface of the coupling portion. A thrust plate is arranged to press the movable ball, and the thrust plate is pressed against the coupling portion by a spring via a spring receiver, thereby causing the movable ball to be pressed against the roller, and the roller is pressed against the roller. A torque limiting device characterized by applying elastic pressure to the inner surface of a groove of a second member. 2. The spring receiver is provided between the thrust plate and the spring for co-rotating the first member but moving axially with respect to the first member, and 2. The torque limiting device according to claim 1, further comprising an adjusting nut for adjusting the pressing amount of the spring receiver, and a plurality of thrust rollers provided between the spring receiver and the thrust plate. 3. The torque limiting device according to claim 2, wherein the spring receiver is provided with a scale plate, and the adjusting nut is provided with an indicator that cooperates with the scale plate to display the amount of torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57232179A JPS59121233A (en) | 1982-12-28 | 1982-12-28 | Torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57232179A JPS59121233A (en) | 1982-12-28 | 1982-12-28 | Torque limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59121233A JPS59121233A (en) | 1984-07-13 |
| JPH0323771B2 true JPH0323771B2 (en) | 1991-03-29 |
Family
ID=16935242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57232179A Granted JPS59121233A (en) | 1982-12-28 | 1982-12-28 | Torque limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59121233A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300952A1 (en) * | 1993-01-15 | 1994-07-21 | Mayr Christian Gmbh & Co Kg | Overload clutch |
| JPH1193970A (en) * | 1997-09-19 | 1999-04-06 | Sankyo Mfg Co Ltd | Torque limiter |
| RU2629414C2 (en) * | 2015-12-29 | 2017-08-29 | федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный аграрный университет" (ФГБОУ ВО Волгоградский ГАУ) | Limit moment coupling |
-
1982
- 1982-12-28 JP JP57232179A patent/JPS59121233A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59121233A (en) | 1984-07-13 |
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