JPH0529377Y2 - - Google Patents
Info
- Publication number
- JPH0529377Y2 JPH0529377Y2 JP1987165351U JP16535187U JPH0529377Y2 JP H0529377 Y2 JPH0529377 Y2 JP H0529377Y2 JP 1987165351 U JP1987165351 U JP 1987165351U JP 16535187 U JP16535187 U JP 16535187U JP H0529377 Y2 JPH0529377 Y2 JP H0529377Y2
- Authority
- JP
- Japan
- Prior art keywords
- detection panel
- overload detection
- steel ball
- rotating body
- roller
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Transmission Devices (AREA)
Description
【考案の詳細な説明】
《産業上の利用分野》
本考案は、回転駆動される被動体と回転駆動軸
との間に取付けられて、通常は回転駆動軸の回転
運動を被動体に伝達するとともに、所定の伝達限
界トルク値を超えた過負荷がそれらの間に作用し
たときにはその回転運動の伝達を解除して、機器
の破損等の事故防止やトルク制御等の機能を果す
トルクリミッターに関する。[Detailed description of the invention] <<Industrial Application Field>> The present invention is installed between a rotationally driven driven body and a rotational drive shaft, and usually transmits the rotational motion of the rotational drive shaft to the driven body. The present invention also relates to a torque limiter that cancels the transmission of rotational motion when an overload exceeding a predetermined transmission limit torque value is applied between them, and performs functions such as preventing accidents such as damage to equipment and controlling torque.
《従来の技術》
従来この種のトルクリミッターとしは、例えば
特公昭55−21893号公報に記載されたものがある。
このものでは、同軸上に配設される駆動軸と被動
軸との外周に、それぞれフランジ部を有する筒状
のボス部材でなる回転体を相対向させて固定し、
一方の回転体のフランジ部にはこれを軸方向に貫
通する凹所を形成するとともに他方の回転体のフ
ランジ部には凹溝を形成し、上記凹所にはローラ
を収納してこのローラの一側方の外周部を上記凹
溝に係合させるとともにその他側方の外周部には
過負荷検出パネルを当接させ、この過負荷検出パ
ネルにはこれを軸方向に沿つて付勢して上記ロー
ラを上記凹溝に押圧させるトルクスプリングを当
接させている。<<Prior Art>> A conventional torque limiter of this type is described in, for example, Japanese Patent Publication No. 55-21893.
In this device, a rotating body made of a cylindrical boss member having a flange portion is fixed to the outer periphery of a driving shaft and a driven shaft, which are arranged on the same axis, so as to face each other.
A recess is formed in the flange portion of one rotating body passing through it in the axial direction, and a groove is formed in the flange portion of the other rotating body, and a roller is housed in the recess. The outer periphery of one side is engaged with the groove, and the outer periphery of the other side is brought into contact with an overload detection panel, and this overload detection panel is biased along the axial direction. A torque spring is brought into contact with the roller to press it against the groove.
従つてこのトルクリミッターでは、上記トルク
スプリングの弾圧力によつて決まる設定伝達限界
トルク値以上の負荷が作用すると、ローラがトル
クスプリングの弾圧力に抗して凹溝から離脱し、
これによりトルクの伝達が遮断されて駆動側の回
転体と被動側の回転体とが相対回転するようにな
つている。 Therefore, in this torque limiter, when a load exceeding the set transmission limit torque value determined by the elastic force of the torque spring is applied, the roller separates from the groove against the elastic force of the torque spring.
As a result, torque transmission is interrupted, and the driving-side rotating body and the driven-side rotating body rotate relative to each other.
《考案が解決しようとする問題点》
ところで、上記従来のものにあつては、トルク
の伝達が遮断されて駆動側の回転体と被動側の回
転体とが相対回転すると、ローラはトルクスプリ
ングによつて弾圧されたままなので、その相対回
転中ローラは凹溝に対して係合乃至離脱され続
け、その際に衝撃音と振動とが発生するととも
に、若干のトルク伝達がなされてしまうという問
題があつた。<Problems to be solved by the invention> By the way, in the above-mentioned conventional device, when the torque transmission is cut off and the rotating body on the driving side and the rotating body on the driven side rotate relative to each other, the roller is moved by the torque spring. As a result, the roller remains under pressure, and during its relative rotation, the roller continues to engage with or disengage from the concave groove, causing impact noise and vibration, as well as the problem that a slight amount of torque is transmitted. It was hot.
本考案は、上記の事情に鑑みてなされたもので
あり、その目的は、駆動側の回転体と被動側の回
転体との間のトルク伝達が遮断されたときに、ト
ルクスプリングからローラに伝達される弾圧力を
自動的に遮断して駆動側の回転体と被動側の回転
体とを完全にフリーな状態に維持できるトルクリ
ミッターを提供することにある。 The present invention was developed in view of the above circumstances, and its purpose is to transmit torque from the torque spring to the roller when the torque transmission between the rotating body on the driving side and the rotating body on the driven side is interrupted. To provide a torque limiter which can maintain a driving side rotary body and a driven side rotary body in a completely free state by automatically cutting off the elastic force applied to the driven body.
《問題点を解決するための手段》
本考案は上記の目的を達成するために、駆動側
の回転体と被動側の回転体とをそれらのフランジ
部を相対向させて同軸上に設け、そのいずれか一
方のフランジ部にはこれを貫通する凹所を形成す
るとともに他方のフランジ部には上記凹所に符合
させて凹溝を形成し、上記凹所内にはローラを収
納させて該ローラの一側方の外周部を上記凹溝に
係合させるとともに他側方の外周部には上記ロー
ラを上記凹溝側に押圧する環状の過負荷検出パネ
ルを当接させ、該過負荷検出パネルにはこれを軸
方向に沿つて上記ローラ側に付勢するトルクスプ
リングを当接させたトルクリミッターにおいて、
上記過負荷検出パネルとトルクスプリングとの間
に、該過負荷検出パネルが押し戻されたときに該
トルクスプリングの弾圧力が該過負荷検出パネル
に伝達されることを遮断する弾圧力遮断手段を介
設し、該弾圧力遮断手段は、過負荷検出パネルの
内周面と一方の回転体のボス部外周面との間に介
設された鋼球と、該鋼球と上記トルクスプリング
との間にそれらに当接されて介設されたスラスト
リングと、上記ボス部外周面に形成されて上記軸
方向に沿つて弾圧される鋼球を径方向外方に案内
する傾斜面と、上記過負荷検出パネルの内周面に
形成されて上記径方向外方に案内されてくる鋼球
を係止するとともに過負荷検出パネルが軸方向に
沿つて押し戻されたときには上記鋼球を径方向の
内方に向けて押し戻しその鋼球との係合を解除す
る係合凹部とで構成した。<Means for Solving the Problems> In order to achieve the above object, the present invention provides a rotating body on the driving side and a rotating body on the driven side on the same axis with their flanges facing each other. A recess is formed in one of the flange portions passing through the flange portion, and a groove is formed in the other flange portion to match the recess, and a roller is accommodated in the recess. An annular overload detection panel whose outer periphery on one side engages with the groove and presses the roller toward the groove is brought into contact with the outer periphery of the other side. is a torque limiter that is in contact with a torque spring that urges this toward the roller side along the axial direction.
An elastic force blocking means is provided between the overload detection panel and the torque spring to block the elastic force of the torque spring from being transmitted to the overload detection panel when the overload detection panel is pushed back. The elastic force interrupting means includes a steel ball interposed between the inner circumferential surface of the overload detection panel and the outer circumferential surface of the boss portion of one of the rotating bodies, and a steel ball interposed between the steel ball and the torque spring. a thrust ring interposed in contact with the boss portion, an inclined surface formed on the outer circumferential surface of the boss portion and guiding the steel ball radially outward to be compressed along the axial direction, and the overload It is formed on the inner peripheral surface of the detection panel to lock the steel balls guided outward in the radial direction, and to guide the steel balls radially inward when the overload detection panel is pushed back along the axial direction. The steel ball is configured with an engaging recess that is pushed back towards the steel ball to release the engagement with the steel ball.
《作用》
上記構成の本考案によれば、トルクスプリング
の弾圧力はスラストリングを介して鋼球に伝達さ
れ、この鋼球は通常時にはボス部の外周面に形成
した傾斜面と過負荷検出パネルの内周面に形成し
た係合溝部とに係止されて、その弾圧力を過負荷
検出パネルに伝達する。<Operation> According to the present invention having the above configuration, the elastic force of the torque spring is transmitted to the steel ball via the thrust ring, and the steel ball normally interacts with the inclined surface formed on the outer peripheral surface of the boss and the overload detection panel. The elastic force is transmitted to the overload detection panel.
駆動側の回転体と被動側の回転体との間に作用
するトルクが過負荷になつてローラとともに過負
荷検出パネルが軸方向に沿つて押し戻されると、
鋼球は係合凹部から離脱して傾斜面に沿つて径方
向の内方に押し戻され、それ以後鋼球は、傾斜面
と過負荷検出パネルの平坦な内周面とに係止さ
れ、これにより、トルクスプリングの弾圧力は過
負荷検出パネルには伝達されなくなる。 When the torque acting between the rotating body on the driving side and the rotating body on the driven side becomes overloaded and the overload detection panel is pushed back along the axial direction along with the roller,
The steel ball disengages from the engagement recess and is pushed back radially inward along the inclined surface, after which the steel ball is locked to the inclined surface and the flat inner circumferential surface of the overload detection panel. As a result, the elastic force of the torque spring is no longer transmitted to the overload detection panel.
《実施例》
以下に、本考案の好適な一実施例を添附図面に
基づき詳述する。<<Example>> Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings.
第１図は本考案に係るトルクリミッターの側断
面図を示し、第２図は第１図中の−線矢視断
面図を示している。 FIG. 1 shows a side sectional view of a torque limiter according to the present invention, and FIG. 2 shows a sectional view taken along the - line arrow in FIG.
図示するようにトルクリミッター２は、回転駆
動軸４の軸端部外周側に固定される駆動側の回転
体６と、被動体８側に固定される被動側の回転体
１０と、これら駆動側と被動側の回転体６，１０
間にそれらに相互に係合してその一方から他方に
トルクを伝達するローラ１２と、このローラ１２
を所定の押圧力で押圧してこれを駆動側の回転体
６と被動側の回転体１０とに相互に係合させる弾
圧手段１４と、駆動側の回転体６と被動側の回転
体８との間に作用するトルクが所定値を超えてそ
のトルクの伝達が遮断されたときに上記弾圧手段
１４の弾圧力の伝達を遮断される弾圧力遮断手段
１５等とから主に構成されている。 As shown in the figure, the torque limiter 2 includes a driving-side rotating body 6 fixed to the outer peripheral side of the shaft end of the rotary drive shaft 4, a driven-side rotating body 10 fixed to the driven body 8 side, and the driving side and the rotating bodies 6, 10 on the driven side
a roller 12 that mutually engages them in between to transmit torque from one to the other;
a pressing means 14 that presses the rotating body 6 on the driving side and the rotating body 10 on the driven side with a predetermined pressing force so that the rotating body 6 on the driving side and the rotating body 8 on the driven side mutually engage with each other; It mainly consists of elastic force cutoff means 15, etc., which cut off the transmission of the elastic force of the elastic pressure means 14 when the torque acting during this period exceeds a predetermined value and the transmission of the torque is cut off.
駆動側の回転体６はボス部材１６でなり、その
軸方向のほぼ中央部には径方向の外方に向けて拡
径形成されたフランジ部１８が設けられており、
このフランジ部１８の外周側にはその周側に沿つ
て適宜間隔をあけてそのフランジ部１８を貫通す
る凹所２０が形成されている。 The rotating body 6 on the driving side is formed of a boss member 16, and a flange portion 18 whose diameter is expanded outward in the radial direction is provided at approximately the center of the boss member 16 in the axial direction.
Recesses 20 passing through the flange portion 18 are formed at appropriate intervals along the outer circumference of the flange portion 18 .
被動側の回転体１０は、駆動側のボス部材１６
の一側端の外周側にベアリング２２を介して回転
自在に同軸上に嵌装されたボス部材２４でなり、
このボス部材２４は駆動側のボス部材１６の一端
部に螺着されたナツト２６で係止されている。こ
の被動側のボス部材２４には、その端部に径方向
の外方に拡径形成されたフランジ部２８が上記駆
動側のボス部材１６のフランジ部１８に相対向し
て設けられており、この被動側のフランジ部２８
には上記駆動側のフランジ部１８に形成した凹所
２０に符合して凹溝３０が形成されている。 The rotating body 10 on the driven side is connected to the boss member 16 on the driving side.
It consists of a boss member 24 rotatably coaxially fitted on the outer peripheral side of one end via a bearing 22,
This boss member 24 is locked with a nut 26 screwed onto one end of the drive side boss member 16. The driven side boss member 24 is provided with a flange portion 28 whose diameter is expanded outward in the radial direction at the end thereof, facing the flange portion 18 of the drive side boss member 16. This driven side flange portion 28
A recessed groove 30 is formed in alignment with the recessed part 20 formed in the flange portion 18 on the driving side.
上記凹所２０内には、中実円筒状の上記ローラ
１２が収納されており、このローラ１２の一側方
の外周部には上記凹溝３０に係合され、他側方の
外周部は駆動側のフランジ部１８の裏面側に突出
されて、それら駆動側と被動側とのフランジ部１
８，２８に相互に係合されている。 The roller 12 having a solid cylindrical shape is housed in the recess 20, and the outer periphery on one side of the roller 12 is engaged with the groove 30, and the outer periphery on the other side is engaged with the groove 30. The flange portions 1 on the driving side and the driven side are protruded from the back side of the flange portion 18 on the driving side.
8 and 28 are mutually engaged.
弾圧手段１４と弾圧力遮断手段１５とは不可分
一体的のものとして構成されており、それらは、
上記ローラ１２の突出部に当接されて駆動側のフ
ランジ部１８の裏面側に設けられた環状の過負荷
検出パネル３４と、この過負荷検出パネル３４の
内周面と駆動側のボス部材６の外周面との間にそ
の周側に沿つて多数介設された鋼球３６と、駆動
側のボス部材１６の他端の外周部に螺着されたプ
レツシヤーナツト３８と、このプレツシヤーナツ
ト３８に一端部が係止されたトルクスプリング４
０と、このトルクスプリング４０の他端部と上記
鋼球３６とに当接されてそれらの間に介設された
環状のスラストリング４２とから主になつてい
る。 The compression means 14 and the compression force cutoff means 15 are constructed as an inseparable unit, and they are
An annular overload detection panel 34 that is in contact with the protrusion of the roller 12 and provided on the back side of the flange portion 18 on the drive side, and an inner peripheral surface of the overload detection panel 34 and a boss member 6 on the drive side. A large number of steel balls 36 are interposed along the circumferential side between the outer circumferential surface of the press member 16, a presser nut 38 is screwed onto the outer circumference of the other end of the boss member 16 on the driving side, and Torque spring 4 whose one end is locked to the sear nut 38
0, and an annular thrust ring 42 that abuts on and is interposed between the other end of the torque spring 40 and the steel ball 36.
過負荷検出パネル３４は、板状をなして上記ロ
ーラ１２に当接される環状のパネル部３４ａと、
このパネル部３４ａの外周部から軸方向に沿つて
延出されて駆動側と被動側とのフランジ部１８，
２８の外周側を囲繞する大径の筒状部３４ｂと、
パネル部３４ａの内周部から軸方向に沿つてプレ
ツシヤーナツト３８側に向けて延出された小径の
筒状部３４ｃとからなり、この小径の筒状部３４
ｃの内周面３４ｄと駆動側のボス部材１６の外周
面１６ａとの間に上記鋼球３６が介設されるよう
になつている。 The overload detection panel 34 includes an annular panel portion 34a that is plate-shaped and comes into contact with the roller 12;
Flange portions 18 on the driving side and the driven side extend along the axial direction from the outer peripheral portion of the panel portion 34a,
a large-diameter cylindrical portion 34b surrounding the outer peripheral side of 28;
It consists of a small diameter cylindrical part 34c extending from the inner peripheral part of the panel part 34a toward the pressure nut 38 side along the axial direction, and this small diameter cylindrical part 34
The steel ball 36 is interposed between the inner circumferential surface 34d of the drive-side boss member 16 and the outer circumferential surface 16a of the drive-side boss member 16.
すなわち、小径の筒状部３４ｃの内周面３４ｄ
には鋼球３６を係止するための係合凹部４４が設
けられていて、この係合凹部４４は環状をなすテ
ーパ溝状に形成されている。他方、そのテーパ溝
状の係合凹部４４に符合して駆動側のボス部材１
６の外周面１６ａには、フランジ部１８側からプ
レツシヤーナツト３８側に向けて順次その径を縮
径して形成したテーパ状の傾斜面４６が形成され
ていて、通常時は上記鋼球３６はその傾斜面４６
と係合凹部４４とに係止されてそれらの間に介装
されている。 That is, the inner circumferential surface 34d of the small diameter cylindrical portion 34c
is provided with an engagement recess 44 for locking the steel ball 36, and this engagement recess 44 is formed in the shape of an annular tapered groove. On the other hand, the drive-side boss member 1 is aligned with the tapered groove-shaped engagement recess 44.
A tapered inclined surface 46 is formed on the outer circumferential surface 16a of the steel ball 6, the diameter of which is gradually reduced from the flange portion 18 side toward the pressure nut 38 side. 36 is the inclined surface 46
and the engagement recess 44, and is interposed therebetween.
また、小径の筒状部３４ｃと上記ボス部材１６
の縮径部との間の空〓には上記スラストリング４
２の一端部が挿入されていて、このスラストリン
グ４２の端面４２ａは上記鋼球３６に当接されて
いる。 Furthermore, the small diameter cylindrical portion 34c and the boss member 16
The above-mentioned thrust ring 4 is installed in the space between the diameter reduced part and the
One end of the thrust ring 42 is inserted into the thrust ring 42, and the end surface 42a of the thrust ring 42 is in contact with the steel ball 36.
従つて、鋼球３６にはスラストリング４２を介
してトルクスプリング４０の弾圧力が伝えられ、
この弾圧力によつてフランジ部１８側に向けて軸
方向に沿つて付勢された鋼球３６は、ボス部材１
６の傾斜面４６を滑つて径方向の外方に案内され
つつ上記係合凹部４４に押付けられて、その弾圧
力を過負荷検出パネル３４側に伝達するようにな
つている。 Therefore, the elastic force of the torque spring 40 is transmitted to the steel ball 36 via the thrust ring 42,
The steel ball 36 is urged along the axial direction toward the flange portion 18 by this elastic force, and the boss member 1
While being guided radially outward by sliding on the inclined surface 46 of No. 6, it is pressed against the engagement recess 44, and its elastic force is transmitted to the overload detection panel 34 side.
従つて、このようにしてなるトルクリミッター
２では、通常時においては、トルクスプリング４
０の弾圧力はスラストリング４２と鋼球３６とを
介して過負荷検出パネル３４に伝達される。そし
てこれにより、ローラ１２が所定の押圧力で被動
側のフランジ部１８の凹溝３０に圧接され、ロー
ラ１２が駆動側の回転体６と被動側の回転体１０
とに相互に係合して駆動側の回転体６と被動側の
回転体１０との間でトルクの伝達が行なわれる。
この際、その設定伝達限界トルク値はローラ１２
が凹溝３０に圧接される押圧力で決定されるが、
その押圧力はプレツシヤーナツト３８の締付量を
加減することで任意の値に調整される。 Therefore, in the torque limiter 2 constructed in this way, in normal times, the torque spring 4
The elastic force of 0 is transmitted to the overload detection panel 34 via the thrust ring 42 and the steel ball 36. As a result, the roller 12 is pressed against the groove 30 of the flange portion 18 on the driven side with a predetermined pressing force, and the roller 12 is pressed against the rotating body 6 on the driving side and the rotating body 1 on the driven side.
The rotating body 6 on the driving side and the rotating body 10 on the driven side engage with each other to transmit torque.
At this time, the set transmission limit torque value is
is determined by the pressing force applied to the groove 30,
The pressing force can be adjusted to an arbitrary value by adjusting the amount of tightening of the pressure nut 38.
ところで、このようにしてトルクの伝達が行な
われているときに、いずれか一方の回転体６，１
０側の負荷が過大になり、それらの間に作用する
トルクがその設定伝達限界トルク値を超えると、
ローラ１２がその押圧力に抗して押し戻されて被
動側の回転体１０のフランジ部２８の凹溝３０か
ら離脱され、これにより駆動側の回転体６と被動
側の回転体１０との係合が外れてそれらは相対回
転する。 By the way, when torque is being transmitted in this way, one of the rotating bodies 6, 1
If the load on the 0 side becomes excessive and the torque acting between them exceeds the set transmission limit torque value,
The roller 12 is pushed back against the pressing force and disengaged from the groove 30 of the flange portion 28 of the driven rotating body 10, thereby causing engagement between the driving rotating body 6 and the driven rotating body 10. comes off and they rotate relative to each other.
このとき、ローラ１２が押し戻されて軸方向に
沿つて移動すると、これとともに過負荷検出パネ
ル３４も軸方向に沿つてプレツシヤーナツト３８
側に向けて移動される。すると、小径の筒状部３
４ｃの内周面３４ｄに形成した環状のテーパ溝状
の係合凹部４４に係止された各鋼球３６は、その
係合凹部４４のテーパ面４４ａとボス部材１６に
形成した傾斜面４６とに案内されて、トルクスプ
リング４０を押し縮めつつその軸方向に沿つてか
つ径方向の内方に移動する。そして、各鋼球３６
は過負荷検出パネル３４がその全移動ストローク
が移動される途中でその係合凹部４４から自動的
に離脱され、それ以後はその小径の筒状部３４ｃ
の平坦な内周面３４ｄと上記傾斜面４６及びスラ
ストリング４２の端面４２ａとによつて係止され
る。 At this time, when the roller 12 is pushed back and moves along the axial direction, the overload detection panel 34 also moves along the axial direction to the pressure nut 38.
moved towards the side. Then, the small diameter cylindrical part 3
Each steel ball 36 locked in the annular tapered groove-shaped engagement recess 44 formed on the inner circumferential surface 34d of the steel ball 4c is connected to the tapered surface 44a of the engagement recess 44 and the inclined surface 46 formed on the boss member 16. The torque spring 40 is moved along its axis and radially inward while compressing the torque spring 40. And each steel ball 36
The overload detection panel 34 is automatically disengaged from the engagement recess 44 during its entire travel stroke, and thereafter the small diameter cylindrical portion 34c
The thrust ring 42 is locked by the flat inner circumferential surface 34d, the inclined surface 46, and the end surface 42a of the thrust ring 42.
このため、鋼球３６が係合凹部４４から離脱さ
れた以後は、トルクスプリング４０の弾圧力は過
負荷検出パネル３４には伝達されなくなり、過負
荷検出パネル３４はトルクスプリング４０の弾圧
力が遮断された状態に維持されることになる。こ
の結果、ローラ１２は被動側の回転体１０のフラ
ンジ部２８に押圧されなくなり、駆動側の回転体
６と被動側の回転体１０とが相対回転をしてもロ
ーラ１２は凹溝３０に落込むことはなく、それら
からは衝撃音乃至振動等が発生しなくなる。従つ
てこれにより、機器の耐久性等の信頼性を可及的
に向上できるようになる。 Therefore, after the steel ball 36 is disengaged from the engagement recess 44, the elastic force of the torque spring 40 is no longer transmitted to the overload detection panel 34, and the elastic force of the torque spring 40 is blocked. It will be maintained in the same state. As a result, the roller 12 is no longer pressed by the flange portion 28 of the driven rotating body 10, and even if the driving rotating body 6 and the driven rotating body 10 rotate relative to each other, the roller 12 falls into the groove 30. They do not cause impact noise or vibrations. Therefore, this makes it possible to improve reliability such as the durability of the equipment as much as possible.
なお、過負荷検出パネル３４は、駆動側の回転
体６と被動側の回転体１０との間に作用するトル
クが過大となる原因を除去した後に、フランジ部
１８側に移動させてリセツト状態に復帰させる。 Note that the overload detection panel 34 is moved to the flange portion 18 side and reset after removing the cause of excessive torque acting between the driving side rotating body 6 and the driven side rotating body 10. Bring it back.
《効果》
以上要するに本考案によれば、一方の回転体の
ボス部の外周面とこのボス部の外周側に設けられ
てローラを他方の回転体に向けて押圧する過負荷
検出パネルの内周面との間に鋼球を介設し、この
鋼球はスラストリングを介してトルクスプリング
で軸方向に沿わせて他方の回転体側に弾圧し、上
記ボス部には上記弾圧力によつて付勢される鋼球
を径方向の外方に案内する傾斜面を形成するとと
もに、過負荷検出パネルの内周面には径方向の外
方に案内されてくる鋼球を係止する凹部を形成し
て、この係合凹部に鋼球を係合させてトルクスプ
リングの弾圧力を過負荷検出パネルに伝達させる
ようにし、過負荷検出パネルがその軸方向に沿つ
て弾圧力に抗して押し戻されたときには鋼球をボ
ス部の傾斜面に沿わせて径方向の内方に押し戻し
てこの鋼球と係合凹部との係合を離脱させるよう
にしたので、駆動側の回転体と被動側の回転体と
の間に作用するトルクが所定値を超えて過負荷検
出パネルが押し戻されたときに、過負荷検出パネ
ルに伝達されるトルクスプリングの弾圧力を自動
的に遮断させてその遮断状態を維持させることが
できる。このため、駆動側の回転体と被動側の回
転体とが相対回転したときには、ローラは凹溝内
に落込まなくなり、これによる衝撃音及び振動等
の発生を防止して、機器の耐久性・信頼性を可及
的に向上できるようになる。<<Effects>> In summary, according to the present invention, the outer circumferential surface of the boss portion of one rotating body and the inner circumference of the overload detection panel that is provided on the outer circumferential side of this boss portion and presses the roller toward the other rotating body. A steel ball is interposed between the surface and the steel ball, which is pressed against the other rotating body along the axial direction by a torque spring via a thrust ring, and is attached to the boss part by the elastic force. The overload detection panel has an inclined surface that guides the steel balls radially outward, and a recess that locks the steel balls guided radially outward on the inner peripheral surface of the overload detection panel. Then, the steel ball is engaged with this engagement recess to transmit the elastic force of the torque spring to the overload detection panel, and the overload detection panel is pushed back along its axial direction against the elastic force. When this occurs, the steel ball is pushed back inward in the radial direction along the inclined surface of the boss to disengage the engagement recess, so that the rotating body on the drive side and the driven side When the overload detection panel is pushed back due to the torque acting between it and the rotating body exceeding a predetermined value, the elastic force of the torque spring transmitted to the overload detection panel is automatically cut off to prevent the cutoff state. can be maintained. Therefore, when the rotating body on the driving side and the rotating body on the driven side rotate relative to each other, the rollers do not fall into the groove, which prevents the occurrence of impact noise and vibrations, thereby improving the durability of the equipment. Reliability can be improved as much as possible.
第１図は本考案に係るトルクリミッターの好適
な一実施例を示す側断面図、第２図は第１図中の
−線矢視断面図である。
２……トルクリミッター、６……駆動側の回転
体、１０……被動側の回転体、１２……ローラ、
１４……弾圧手段、１５……弾圧力遮断手段、１
６……（駆動側）回転体のボス部材、１６ａ……
外周面、１８……（駆動側）回転体のフランジ
部、２０……凹所、２８……（被動側）回転体の
フランジ部、３０……凹溝、３４……過負荷検出
パネル、３４ａ……内周面、３６ａ……鋼球、４
０……トルクスプリング、４２……スラストリン
グ、４４……係合凹部、４６……傾斜面。
FIG. 1 is a side sectional view showing a preferred embodiment of the torque limiter according to the present invention, and FIG. 2 is a sectional view taken along the - line in FIG. 2...Torque limiter, 6...Rotating body on the driving side, 10...Rotating body on the driven side, 12...Roller,
14... Repression means, 15... Repression force interruption means, 1
6...(Drive side) Boss member of rotating body, 16a...
Outer peripheral surface, 18... (driving side) flange portion of rotating body, 20... recess, 28... (driven side) flange portion of rotating body, 30... concave groove, 34... overload detection panel, 34a ...Inner peripheral surface, 36a...Steel ball, 4
0... Torque spring, 42... Thrust ring, 44... Engagement recess, 46... Inclined surface.
Claims (1)
フランジ部を相対向させて同軸上に設け、そのい
ずれか一方のフランジ部にはこれを貫通する凹所
を形成するとともに他方のフランジ部には上記凹
部に符合させて凹溝を形成し、上記凹所内にはロ
ーラを収納させて該ローラの一側方の外周部を上
記凹溝に係合させるとともに他側方の外周部には
上記ローラを上記凹溝側に押圧する環状の過負荷
検出パネルを当接させ、該過負荷検出パネルには
これを軸方向に沿つて上記ローラ側に付勢するト
ルクスプリングを当接させたトルクリミッターに
おいて、上記過負荷検出パネルとトルクスプリン
グとの間に、該過負荷検出パネルが押し戻された
ときに該トルクスプリングの弾圧力が該過負荷検
出パネルに伝達されることを遮断する弾圧力遮断
手段を介設し、該弾圧力遮断手段は、過負荷検出
パネルの内周面と一方の回転体のボス部外周面と
の間に介設された鋼球と、該鋼球と上記トルクス
プリングとの間にそれらに当接されて介設された
スラストリングと、上記ボス部外周面に形成され
て上記軸方向に沿つて弾圧される鋼球を径方向外
方に案内する傾斜面と、上記過負荷検出パネルの
内周面に形成されて上記径方向外方に案内されて
くる鋼球を係止するとともに過負荷検出パネルが
軸方向に沿つて押し戻されたときには上記鋼球を
径方向の内方に向けて押し戻してその鋼球との係
合を解除する係合凹部とでなることを特徴とする
トルクリミッター。 A rotating body on the driving side and a rotating body on the driven side are provided on the same axis with their flanges facing each other, and a recess is formed in one of the flange portions to pass through the flange portion, and a recess is formed in the other flange portion. A concave groove is formed to correspond to the concave portion, and a roller is housed in the concave portion, and the outer circumferential portion on one side of the roller is engaged with the concave groove, and the outer circumferential portion on the other side is engaged with the concave groove. An annular overload detection panel that presses the roller toward the groove side is brought into contact with the overload detection panel, and a torque spring is brought into contact with the overload detection panel that biases it toward the roller side along the axial direction. In the limiter, an elastic force cutoff is provided between the overload detection panel and the torque spring to block the elastic force of the torque spring from being transmitted to the overload detection panel when the overload detection panel is pushed back. The elastic force interrupting means includes a steel ball interposed between the inner circumferential surface of the overload detection panel and the outer circumferential surface of the boss portion of one of the rotating bodies, and the steel ball and the torque spring. a thrust ring interposed between and in contact with the boss portion, and an inclined surface formed on the outer circumferential surface of the boss portion to guide the steel ball radially outward to be compressed along the axial direction; Formed on the inner circumferential surface of the overload detection panel, it locks the steel balls guided outward in the radial direction, and when the overload detection panel is pushed back along the axial direction, the steel balls are guided in the radial direction. and an engagement recess that pushes the steel ball back inward to release the engagement with the steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165351U JPH0529377Y2 (en) | 1987-10-30 | 1987-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165351U JPH0529377Y2 (en) | 1987-10-30 | 1987-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0169918U JPH0169918U (en) | 1989-05-10 |
| JPH0529377Y2 true JPH0529377Y2 (en) | 1993-07-28 |
Family
ID=31451758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987165351U Expired - Lifetime JPH0529377Y2 (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529377Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4674826B2 (en) * | 2008-04-15 | 2011-04-20 | 株式会社ツバキエマソン | Overload protection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521893A (en) * | 1978-07-28 | 1980-02-16 | Siemens Ag | Device for alternatively twisting cable cores in leftthanded and rightthanded lays |
| JPS581295A (en) * | 1981-06-26 | 1983-01-06 | 株式会社東芝 | Measuring apparatus |
-
1987
- 1987-10-30 JP JP1987165351U patent/JPH0529377Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521893A (en) * | 1978-07-28 | 1980-02-16 | Siemens Ag | Device for alternatively twisting cable cores in leftthanded and rightthanded lays |
| JPS581295A (en) * | 1981-06-26 | 1983-01-06 | 株式会社東芝 | Measuring apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0169918U (en) | 1989-05-10 |
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