JP2014238131A - Torque limiter and torque limiter unit - Google Patents

Torque limiter and torque limiter unit Download PDF

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Publication number
JP2014238131A
JP2014238131A JP2013120643A JP2013120643A JP2014238131A JP 2014238131 A JP2014238131 A JP 2014238131A JP 2013120643 A JP2013120643 A JP 2013120643A JP 2013120643 A JP2013120643 A JP 2013120643A JP 2014238131 A JP2014238131 A JP 2014238131A
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ring member
coil spring
inner ring
torque limiter
torque
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太郎 磯部
Taro Isobe
太郎 磯部
俊一 渡邉
Shunichi Watanabe
俊一 渡邉
勇 森本
Isamu Morimoto
勇 森本
晴日 井内
Haruhi Iuchi
晴日 井内
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Origin Electric Co Ltd
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Origin Electric Co Ltd
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Priority to JP2013120643A priority Critical patent/JP2014238131A/en
Priority to PCT/JP2014/064577 priority patent/WO2014196490A1/en
Publication of JP2014238131A publication Critical patent/JP2014238131A/en
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    • 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
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/022—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with a helical band or equivalent member co-operating with a cylindrical torque limiting coupling surface
    • 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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
    • F16D43/211—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with radially applied torque-limiting friction surfaces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a torque limiter which can alleviate the friction of an inner ring member, can reduce the number of part items, and can reduce a cost, and a torque limiter unit.SOLUTION: A coil spring 13 which is shrink-fit to an external peripheral face of an inner ring member 12 via a lubricant is formed of resin, a plurality of protrusions 15 are formed at the external peripheral face except for a portion with which a tip of the coil spring 13 contacts out of the external peripheral faces of the inner ring member 12 contacting with the coil spring 13, a rear end of the coil spring 13 is held by an outer ring member 14, when torque between the inner ring member 12 and the outer ring member 14 is not higher than a prescribed value, the torque is transmitted between the inner ring member 12 and the outer ring member 14 without making the coil spring 13 slip, and when the torque between the inner ring member 12 and the outer ring member 14 exceeds the prescribed value, the coil spring 13 is slipped, and the torque transmission between the inner ring member 12 and the outer ring member 14 is blocked.

Description

本発明は、所定値以下のトルクは伝達し、所定値を超えるトルクの伝達は遮断するトルクリミッタ及びトルクリミッタユニットに関する。   The present invention relates to a torque limiter and a torque limiter unit that transmit torque below a predetermined value and block transmission of torque exceeding a predetermined value.

一般に、トルクリミッタは、所定値を超える過大なトルクが作用したとき、その過大なトルクの伝達を遮断するものであり、例えば、ＯＡ機器などのプリンタや複写機の紙送り、搬送や排出部分の機構などに広く用いられている。   In general, when an excessive torque exceeding a predetermined value is applied, the torque limiter cuts off the transmission of the excessive torque. For example, the torque limiter cuts off the paper feeding, conveying and discharging portions of a printer such as an OA device or a copying machine. Widely used in mechanisms.

トルクリミッタには、機械的な摩擦によって回転トルクが得られる接触式のものがあり、接触式のトルクリミッタは、一般に、内輪部材、コイルバネ、外輪部材の３部品で構成されている。内輪部材の外周にコイルバネを締まり嵌めして外輪部材に固定し、内輪部材とコイルバネとの機械的な摩擦によって所定値の回転トルクが得られるようにしている。   There is a contact type torque limiter that can obtain rotational torque by mechanical friction, and the contact type torque limiter is generally composed of three parts, an inner ring member, a coil spring, and an outer ring member. A coil spring is tightly fitted to the outer periphery of the inner ring member and fixed to the outer ring member, and a predetermined rotational torque is obtained by mechanical friction between the inner ring member and the coil spring.

そのような接触式のトルクリミッタとして、外輪部材の内側に内輪部材を回転自在に収納し、内輪部材のまわりにコイルバネを締まり嵌めすると共に、その端部に設けたフックを外輪部材に固定した蓋に係合したものがある（例えば、特許文献１参照）。   As such a contact type torque limiter, the inner ring member is rotatably housed inside the outer ring member, a coil spring is tightly fitted around the inner ring member, and a hook provided at the end is fixed to the outer ring member. (For example, refer to Patent Document 1).

特開平５−２６２５４号公報Japanese Patent Laid-Open No. 5-26254

しかし、接触式のトルクリミッタは、内輪部材とコイルバネとの摩擦摺動により回転トルクが得られる構造であり、通常、内輪部材は樹脂で形成され、コイルバネは金属で形成されているので、内輪部材が摩擦摺動により摩耗する。そこで、内輪部材の摩耗を低減するために、内輪部材には炭素繊維を多く含有する高価なPPS（Polyphenylenesulfide）素材を使用している。このことからコスト高となっている。また、接触式のトルクリミッタは、内輪部材、コイルバネ、外輪部材の３部品で構成されているのでコスト高となっている。   However, the contact type torque limiter has a structure in which rotational torque can be obtained by friction sliding between the inner ring member and the coil spring. Usually, the inner ring member is made of resin, and the coil spring is made of metal. Wears due to frictional sliding. Therefore, in order to reduce wear of the inner ring member, an expensive PPS (Polyphenylenesulfide) material containing a large amount of carbon fiber is used for the inner ring member. This increases the cost. Further, the contact-type torque limiter is composed of three parts, an inner ring member, a coil spring, and an outer ring member, so that the cost is high.

本発明の目的は、内輪部材の摩耗の軽減及び部品点数の削減ができ、しかもコスト低減が図れるトルクリミッタ及びトルクリミッタユニットを提供することである。   An object of the present invention is to provide a torque limiter and a torque limiter unit that can reduce the wear of the inner ring member and reduce the number of parts and can reduce the cost.

請求項１の発明に係るトルクリミッタは、樹脂で形成された円筒状の内輪部材と、前記内輪部材の外周面に潤滑剤を介して締まり嵌めされ前記内輪部材の外周面と接触するコイルバネと、前記コイルバネの後端部を保持する外輪部材と、前記コイルバネと接触する前記内輪部材の外周面のうち前記コイルバネの先端部が接触する部分を除いた外周面に形成された複数の凸部とを備え、前記内輪部材と前記外輪部材との間のトルクが所定値以下のときは前記コイルバネがスリップせずに前記内輪部材と前記外輪部材との間でトルク伝達を行い、前記内輪部材と前記外輪部材との間のトルクが所定値を超えたときは前記コイルバネがスリップして前記内輪部材と前記外輪部材との間のトルク伝達を遮断することを特徴とする。   A torque limiter according to the invention of claim 1 includes a cylindrical inner ring member formed of resin, a coil spring that is tightly fitted to the outer peripheral surface of the inner ring member via a lubricant and is in contact with the outer peripheral surface of the inner ring member, An outer ring member that holds a rear end portion of the coil spring, and a plurality of convex portions that are formed on the outer peripheral surface of the outer peripheral surface of the inner ring member that is in contact with the coil spring, excluding a portion that is in contact with the tip of the coil spring. And when the torque between the inner ring member and the outer ring member is a predetermined value or less, the coil spring does not slip and transmits torque between the inner ring member and the outer ring member, and the inner ring member and the outer ring When the torque between the members exceeds a predetermined value, the coil spring slips to interrupt torque transmission between the inner ring member and the outer ring member.

請求項２の発明に係るトルクリミッタは、請求項１の発明において、前記潤滑剤の飛散防止手段を設けたことを特徴とする。   A torque limiter according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the lubricant scattering preventing means is provided.

請求項３の発明に係るトルクリミッタは、請求項２の発明において、前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材と反対側の前記内輪部材の端部に設けられた鍔部であることを特徴とする。   A torque limiter according to a third aspect of the present invention is the torque limiter according to the second aspect of the present invention, wherein the scattering prevention means is provided at the end of the inner ring member opposite to the outer ring member holding one end of the coil spring. It is characterized by being.

請求項４の発明に係るトルクリミッタは、請求項２の発明において、前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材と反対側の前記内輪部材の端部から前記外輪部材側に延伸して前記コイルバネを囲繞する覆い部であることを特徴とする。   A torque limiter according to a fourth aspect of the present invention is the torque limiter according to the second aspect of the present invention, wherein the scattering prevention means is arranged on the outer ring member side from the end of the inner ring member opposite to the outer ring member holding one end of the coil spring. The cover portion extends and surrounds the coil spring.

請求項５の発明に係るトルクリミッタは、請求項２の発明において、前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材から前記内輪部材側に延伸して前記コイルバネを囲繞する覆い部であること特徴とする。   A torque limiter according to a fifth aspect of the present invention provides the torque limiter according to the second aspect of the present invention, wherein the scattering preventing means extends from the outer ring member holding one end of the coil spring toward the inner ring member side and surrounds the coil spring. It is characterized by being.

請求項６の発明に係るトルクリミッタは、請求項１乃至５のいずれか１項の発明において、前記コイルバネは、２方向に金型が引き抜き可能な形状であることを特徴とする。   A torque limiter according to a sixth aspect of the present invention is the torque limiter according to any one of the first to fifth aspects, wherein the coil spring has a shape in which a mold can be pulled out in two directions.

請求項７の発明に係るトルクリミッタユニットは、前記請求項１乃至６のいずれか１項に記載のトルクリミッタと、前記トルクリミッタの前記内輪部材を貫通して設けられ前記内輪部材に連結されたシャフトとを備えたことを特徴とする。   A torque limiter unit according to a seventh aspect of the present invention is provided through the torque limiter according to any one of the first to sixth aspects and the inner ring member of the torque limiter, and is connected to the inner ring member. And a shaft.

請求項８の発明に係るトルクリミッタユニットは、前記トルクリミッタの前記外輪部材に回転ローラ部材を取り付けたことを特徴とする。   The torque limiter unit according to the invention of claim 8 is characterized in that a rotating roller member is attached to the outer ring member of the torque limiter.

請求項１の発明によれば、樹脂で形成されたコイルバネを用いたので、外輪部材と一体形成することが可能となり、部品点数を削減できるだけでなく、内輪部材とコイルバネとの摩耗も軽減できコストの低減が図れる。また、コイルバネと接触する内輪部材の外周面のうち、コイルバネの先端部が接触する部分を除いた外周面には、潤滑剤を保持するための複数の凸部を有するので、コイルバネと内輪部材の外周面との接触面積が小さくなり、動摩擦トルクと静摩擦トルクとの差を小さくできる。さらに、複数の凸部で潤滑剤を保持するので潤滑剤の保持力を高めることができる。   According to the invention of claim 1, since the coil spring formed of resin is used, it can be formed integrally with the outer ring member, and not only the number of parts can be reduced, but also the wear between the inner ring member and the coil spring can be reduced and the cost can be reduced. Can be reduced. In addition, the outer peripheral surface of the inner ring member that contacts the coil spring has a plurality of convex portions for holding the lubricant on the outer peripheral surface excluding the portion where the tip of the coil spring contacts, so the coil spring and the inner ring member The contact area with the outer peripheral surface is reduced, and the difference between the dynamic friction torque and the static friction torque can be reduced. Further, since the lubricant is held by the plurality of convex portions, the holding power of the lubricant can be increased.

また、コイルバネと接触する内輪部材の外周面のうち、コイルバネの先端部が接触する部分には複数の凸部を設けないので、コイルバネの先端部が複数の凸部によって形成される凹部と接触することがないのでトルクリップルを抑制できる。   In addition, since the plurality of convex portions are not provided on the portion of the outer peripheral surface of the inner ring member that contacts the coil spring that contacts the tip of the coil spring, the tip of the coil spring contacts the recess formed by the plurality of convex portions. This prevents torque ripple.

請求項２乃至請求項５の発明によれば、内輪部材とコイルバネとの間の潤滑剤が飛散することを防止できる。   According to invention of Claim 2 thru | or 5, it can prevent that the lubricant between an inner ring member and a coil spring scatters.

請求項６の発明によれば、コイルバネは、２方向に金型を引き抜き可能な形状であるので、コイルバネの金型サイズを小さくでき安価に製作できる。   According to the invention of claim 6, since the coil spring has such a shape that the mold can be pulled out in two directions, the mold size of the coil spring can be reduced and can be manufactured at low cost.

請求項７及び請求項８の発明によれば、請求項１乃至請求項６の効果を備えたトルクリミッタユニットを提供できる。   According to the seventh and eighth aspects of the invention, a torque limiter unit having the effects of the first to sixth aspects can be provided.

本発明の実施形態に係るトルクリミッタの実施例１の構成図。The block diagram of Example 1 of the torque limiter which concerns on embodiment of this invention. 本発明の実施形態に係るトルクリミッタの内輪部材の一例を示す斜視図。The perspective view which shows an example of the inner ring member of the torque limiter which concerns on embodiment of this invention. 本発明の実施形態に係るトルクリミッタのコイルバネの先端部が内輪部材の複数の凸部を有した外周面を摺動した際に発生するトルクリップルの説明図。Explanatory drawing of the torque ripple which generate | occur | produces when the front-end | tip part of the coil spring of the torque limiter which concerns on embodiment of this invention slides the outer peripheral surface which has the some convex part of the inner ring member. 本発明の実施形態に係るトルクリミッタの実施例２の構成図。The block diagram of Example 2 of the torque limiter which concerns on embodiment of this invention. 本発明の実施形態に係るトルクリミッタの実施例３の構成図。The block diagram of Example 3 of the torque limiter which concerns on embodiment of this invention. 本発明の実施形態に係るトルクリミッタの実施例４の構成図。The block diagram of Example 4 of the torque limiter which concerns on embodiment of this invention. 本発明の実施形態のコイルバネを成型機で成型する場合の説明図。Explanatory drawing in the case of shape | molding the coil spring of embodiment of this invention with a molding machine. 本発明の実施形態に係るトルクリミッタユニットの一例の構成図。The block diagram of an example of the torque limiter unit which concerns on embodiment of this invention. 本発明の実施形態に係るトルクリミッタユニットの他の一例の構成図。The block diagram of another example of the torque limiter unit which concerns on embodiment of this invention. 従来のコイルバネを成型機で成型する場合の説明図。Explanatory drawing in the case of shape | molding the conventional coil spring with a molding machine.

以下、本発明の実施形態を説明する。図１は本発明の実施形態に係るトルクリミッタの実施例１の構成図であり、図１（ａ）は側面図、図１（ｂ）は内輪部材の側面図である。   Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of Example 1 of the torque limiter according to the embodiment of the present invention. FIG. 1 (a) is a side view and FIG. 1 (b) is a side view of an inner ring member.

図１（ａ）に示すように、本発明の実施例１に係るトルクリミッタ１１は、シャフトが装着される内輪部材１２と、内輪部材１２の外周に締まり嵌めされ内輪部材１２の外周面と接触するコイルバネ１３と、コイルバネ１３の後端部１３Ａを保持する外輪部材１４とから構成される。   As shown in FIG. 1A, the torque limiter 11 according to the first embodiment of the present invention has an inner ring member 12 to which a shaft is attached, and an outer periphery of the inner ring member 12 that is tightly fitted to the outer periphery of the inner ring member 12. And the outer ring member 14 holding the rear end portion 13A of the coil spring 13.

そして、内輪部材１２の外周面には複数の凸部１５が形成されている。複数の凸部１５は、コイルバネ１３の内側面が接触する内輪部材１２の外周面のうち、コイルバネ１３の先端部１３Ｂが接触する部分を除いた外周面に形成されている。   A plurality of convex portions 15 are formed on the outer peripheral surface of the inner ring member 12. The plurality of convex portions 15 are formed on the outer peripheral surface of the outer peripheral surface of the inner ring member 12 with which the inner surface of the coil spring 13 contacts, excluding the portion with which the tip portion 13B of the coil spring 13 contacts.

ここで、内輪部材１２の外周には潤滑剤が塗布され、内輪部材１２とコイルバネ１３との摩耗を軽減するようにしている。これは、トルクリミッタ１１は、内輪部材１２とコイルバネ１３との機械的な摩擦によって所定値の回転トルクが得られるようにしているので、内輪部材１２とコイルバネ１３との摩擦による摩耗を軽減するためである。   Here, a lubricant is applied to the outer periphery of the inner ring member 12 to reduce wear between the inner ring member 12 and the coil spring 13. This is because the torque limiter 11 is designed to obtain a predetermined rotational torque by mechanical friction between the inner ring member 12 and the coil spring 13, so that wear due to friction between the inner ring member 12 and the coil spring 13 is reduced. It is.

潤滑剤は、内輪部材１２の外周面の複数の凸部１５によって形成される凹部に保持される。また、内輪部材１２には、後述のシャフトのシャフト連結部が嵌合するシャフト連結溝部１２Ａを有している。   The lubricant is held in a recess formed by a plurality of protrusions 15 on the outer peripheral surface of the inner ring member 12. Further, the inner ring member 12 has a shaft coupling groove portion 12A into which a shaft coupling portion of a shaft described later is fitted.

内輪部材１２は樹脂で円筒状に形成され、図１（ｂ）に示すように、外輪部材１４の穴に係合する先端部１２Ｂを有し、先端部１２Ｂが外輪部材１４の穴に係合した状態で、コイルバネ１３の内側面が接触する内輪部材１２の外周面のうち、コイルバネ１３の先端部１３Ｂが接触する部分を除いた外周面に、複数の凸部１５が形成されている。すなわち、コイルバネ１３の先端部１３Ｂが接触する部分には、複数の凸部１５は形成されない。   The inner ring member 12 is formed of a resin in a cylindrical shape, and has a tip portion 12B that engages with a hole in the outer ring member 14 as shown in FIG. 1B, and the tip portion 12B engages with a hole in the outer ring member 14. In this state, among the outer peripheral surface of the inner ring member 12 that contacts the inner surface of the coil spring 13, a plurality of convex portions 15 are formed on the outer peripheral surface excluding the portion that the tip portion 13 </ b> B of the coil spring 13 contacts. That is, the plurality of convex portions 15 are not formed at the portion where the tip portion 13B of the coil spring 13 contacts.

図１（ａ）に示すように、内輪部材１２は、コイルバネ１３の内側を貫通して配置され、内輪部材１２の先端部は外輪部材１４の穴に係合する。そして、内輪部材１２の内側には後述のシャフトが挿入されて、内輪部材１２のシャフト連結溝部１２Ａにシャフトのシャフト連結部が嵌合してシャフトと内輪部材１２とが連結される。   As shown in FIG. 1A, the inner ring member 12 is disposed so as to penetrate the inside of the coil spring 13, and the distal end portion of the inner ring member 12 engages with the hole of the outer ring member 14. A shaft, which will be described later, is inserted inside the inner ring member 12, and the shaft coupling portion of the shaft is fitted into the shaft coupling groove portion 12 </ b> A of the inner ring member 12 so that the shaft and the inner ring member 12 are coupled.

この実施例１では、コイルバネ１３は金属に代えて樹脂で形成され、内輪部材１２の外周面に締まり嵌めされる。そして、そのコイルバネ１３の後端部１３Ａは外輪部材１４に固定される。外輪部材１４は樹脂で形成される。このように、この実施例１では、外輪部材１４だけでなくコイルバネ１３も樹脂で形成されることから、コイルバネ１３と外輪部材１４とを樹脂で一体形成することも可能である。コイルバネ１３と外輪部材１４と一体形成すると、トルクリミッタ１１は、シャフトが装着される内輪部材１２と、コイルバネ１３を有した外輪部材１４との２つの部品で構成されることになり、部品点数の削減となる。   In the first embodiment, the coil spring 13 is made of resin instead of metal, and is tightly fitted to the outer peripheral surface of the inner ring member 12. The rear end 13A of the coil spring 13 is fixed to the outer ring member 14. The outer ring member 14 is made of resin. As described above, in the first embodiment, not only the outer ring member 14 but also the coil spring 13 is formed of resin. Therefore, the coil spring 13 and the outer ring member 14 can be integrally formed of resin. When the coil spring 13 and the outer ring member 14 are integrally formed, the torque limiter 11 is composed of two parts, an inner ring member 12 to which the shaft is mounted and an outer ring member 14 having the coil spring 13. Reduction.

図２は、本発明の実施形態に係るトルクリミッタの内輪部材１２の一例を示す斜視図であり、図２（ａ）は凸部１５の先端が平坦でコイルバネと直交方向で面接触するもの（外周面形状１）、図２（ｂ）はコイルバネと直交方向で線接触する凸部１５を有したもの（外周面形状２）を示している。   FIG. 2 is a perspective view showing an example of the inner ring member 12 of the torque limiter according to the embodiment of the present invention, and FIG. 2A is a diagram in which the tip of the convex portion 15 is flat and is in surface contact with the coil spring in the orthogonal direction ( FIG. 2B shows an outer peripheral surface shape 1) and a convex portion 15 (outer peripheral surface shape 2) having a line contact with the coil spring in the orthogonal direction.

図２（ａ）、（ｂ）に示すように、コイルバネと接触する内輪部材１２の外周面には、複数の凸部１５が設けられている。この凸部１５にコイルバネ１３が施されたとき、コイルバネ１３の内側面と内輪部材１２の外周面との接触面積が小さくなる。   As shown in FIGS. 2A and 2B, a plurality of convex portions 15 are provided on the outer peripheral surface of the inner ring member 12 that contacts the coil spring. When the coil spring 13 is applied to the convex portion 15, the contact area between the inner surface of the coil spring 13 and the outer peripheral surface of the inner ring member 12 is reduced.

これにより、内輪部材１２とコイルバネ１３との機械的な摩擦によって得られる回転トルクの動摩擦トルクと静摩擦トルクとの差を小さくできる。また、潤滑剤は凸部１５によって形成される凹部に滞留させることができるので、潤滑剤の保持力を高めることができる。   Thereby, the difference between the dynamic friction torque of the rotational torque obtained by the mechanical friction between the inner ring member 12 and the coil spring 13 and the static friction torque can be reduced. In addition, since the lubricant can be retained in the concave portion formed by the convex portion 15, the holding power of the lubricant can be increased.

前述したように、コイルバネ１３の内側面が接触する内輪部材１２の外周面のうち、コイルバネ１３の先端部１３Ｂが接触する部分には、複数の凸部１５は形成されない。これは、トルクリップルを抑制するためである。   As described above, the plurality of convex portions 15 are not formed on the portion of the outer peripheral surface of the inner ring member 12 with which the inner surface of the coil spring 13 is in contact with the tip portion 13B of the coil spring 13. This is to suppress torque ripple.

図３は、コイルバネ１３の先端部１３Ｂが内輪部材１２の複数の凸部を有した外周面を摺動した際に発生するトルクリップルの説明図であり、図３（ａ）は、コイルバネ１３の先端部１３Ｂの縁部１３Ｂ１が内輪部材１２の外周面の複数の凸部１５によって形成される凹部１６の上部に位置する状態の説明図、図３（ｂ）は、コイルバネ１３の縁部１３Ｂ１が内輪部材１２の外周面の凹部１６に引っ掛かる状態を示す説明図である。   FIG. 3 is an explanatory diagram of torque ripple generated when the tip portion 13B of the coil spring 13 slides on the outer peripheral surface having a plurality of convex portions of the inner ring member 12, and FIG. FIG. 3B is a diagram illustrating a state in which the edge portion 13B1 of the distal end portion 13B is located on the upper portion of the concave portion 16 formed by the plurality of convex portions 15 on the outer peripheral surface of the inner ring member 12, and FIG. It is explanatory drawing which shows the state caught in the recessed part 16 of the outer peripheral surface of the inner ring member 12. FIG.

図３（ａ）に示すように、内輪部材１２とコイルバネ１３との機械的な摩擦によってトルクを発生させるときに、例えば、内輪部材１２を矢印Ｘ方向（コイルバネ１３を締め付ける方向）に回転させると、コイルバネ１３には矢印Ｙ方向（中心方向）への力が掛かる。   As shown in FIG. 3A, when torque is generated by mechanical friction between the inner ring member 12 and the coil spring 13, for example, when the inner ring member 12 is rotated in the arrow X direction (direction in which the coil spring 13 is tightened). The coil spring 13 is subjected to a force in the arrow Y direction (center direction).

そのため、図３（ｂ）に示すように、さらに、内輪部材１２を矢印Ｘ方向（コイルバネ１３を締め付ける方向）に回転させると、コイルバネ１３の先端部１３Ｂの縁部１３Ｂ１が、内輪部材１２外周面の凹部１６部分の所で引っ掛かり、トルクリップルが発生する。   Therefore, as shown in FIG. 3B, when the inner ring member 12 is further rotated in the direction of the arrow X (direction in which the coil spring 13 is tightened), the edge 13B1 of the tip 13B of the coil spring 13 becomes the outer peripheral surface of the inner ring member 12. Torque ripples are generated by being caught at the concave portion 16 portion of the.

そこで、本発明の実施形態では、コイルバネ１３の内側面が接触する内輪部材１２の外周面のうち、コイルバネ１３の先端部１３Ｂが接触する部分には、複数の凸部１５を形成しないようにしている。これにより、コイルバネ１３の先端部１３Ｂが複数の凸部によって形成される凹部と接触することがないのでトルクリップルを抑制できる。   Therefore, in the embodiment of the present invention, a plurality of convex portions 15 are not formed on the portion of the outer peripheral surface of the inner ring member 12 with which the inner surface of the coil spring 13 is in contact with the tip portion 13B of the coil spring 13. Yes. Thereby, since the front-end | tip part 13B of the coil spring 13 does not contact the recessed part formed of a several convex part, a torque ripple can be suppressed.

本発明の実施例１のトルクリミッタ１１によれば、内輪部材１２と外輪部材１４との間のトルクが所定値以下のときはコイルバネ１３がスリップせずに、内輪部材１２と外輪部材１４との間でトルク伝達を行う。一方、内輪部材１２と外輪部材１４との間のトルクが所定値を超えたときは、コイルバネ１３がスリップして内輪部材１２と外輪部材１４との間のトルク伝達を遮断する。   According to the torque limiter 11 of the first embodiment of the present invention, when the torque between the inner ring member 12 and the outer ring member 14 is equal to or less than a predetermined value, the coil spring 13 does not slip and the inner ring member 12 and the outer ring member 14 Torque is transmitted between them. On the other hand, when the torque between the inner ring member 12 and the outer ring member 14 exceeds a predetermined value, the coil spring 13 slips to block torque transmission between the inner ring member 12 and the outer ring member 14.

その際、内輪部材１２及びコイルバネ１３は樹脂で形成されているので、内輪部材１２とコイルバネ１３との摩擦による摩耗を軽減できる。このことから、従来の金属のコイルバネ１３の場合のように、内輪部材１２として炭素繊維を多く含有する高価なPPS素材を使用する必要がなくなるので、コストの低減を図ることができる。   At this time, since the inner ring member 12 and the coil spring 13 are formed of resin, wear due to friction between the inner ring member 12 and the coil spring 13 can be reduced. From this, it is not necessary to use an expensive PPS material containing a large amount of carbon fiber as the inner ring member 12 as in the case of the conventional metal coil spring 13, so that the cost can be reduced.

また、コイルバネ１３と接触する内輪部材１２の外周面のうち、コイルバネ１３の先端部が接触する部分を除いた外周面には、潤滑剤を保持するための複数の凸部１５を有し、コイルバネ１３の先端部が接触する部分には複数の凸部１５を設けない。従って、コイルバネ１３と内輪部材１２の外周面との接触面積が小さくなるので、動摩擦トルクと静摩擦トルクとの差を小さくでき、複数の凸部１５で潤滑剤を保持するので、潤滑剤の保持力を高めることができる。さらに、コイルバネ１３の先端部１３Ｂが複数の凸部１５によって形成される凹部１６と接触することがないのでトルクリップルを抑制できる。   The outer peripheral surface of the inner ring member 12 that contacts the coil spring 13 has a plurality of convex portions 15 for holding the lubricant on the outer peripheral surface excluding the portion where the tip of the coil spring 13 contacts, and the coil spring A plurality of convex portions 15 are not provided at a portion where the tip ends of 13 are in contact. Accordingly, since the contact area between the coil spring 13 and the outer peripheral surface of the inner ring member 12 is reduced, the difference between the dynamic friction torque and the static friction torque can be reduced, and the lubricant is held by the plurality of convex portions 15. Can be increased. Furthermore, since the tip portion 13B of the coil spring 13 does not come into contact with the recess 16 formed by the plurality of projections 15, torque ripple can be suppressed.

図４は本発明の実施形態に係るトルクリミッタの実施例２の構成図である。この実施例２は、図１に示した実施例１に対し、潤滑剤の飛散防止手段を追加して設けたものであり、潤滑剤の飛散防止手段として、内輪部材１２の端部に鍔部１７を追加して設けたものである。図１と同一要素には同一符号を付し重複する説明は省略する。   FIG. 4 is a configuration diagram of Example 2 of the torque limiter according to the embodiment of the present invention. The second embodiment is provided by adding a lubricant scattering prevention means to the first embodiment shown in FIG. 1, and as a lubricant scattering prevention means, a flange portion is provided at the end of the inner ring member 12. 17 is additionally provided. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

潤滑剤の飛散防止手段としての鍔部１７は、コイルバネ１３の一端（後端部）を保持した外輪部材１４と反対側の内輪部材１２の端部に設けられる。すなわち、内輪部材１２のコイルバネ１３の先端部側に設けられる。この鍔部１７は内輪部材１２と一体形成することも可能である。この鍔部１７により、内輪部材１２の軸方向への潤滑剤の飛散を効果的に防止できる。   The flange portion 17 as a means for preventing the scattering of the lubricant is provided at the end portion of the inner ring member 12 opposite to the outer ring member 14 that holds one end (rear end portion) of the coil spring 13. In other words, the inner ring member 12 is provided on the tip end side of the coil spring 13. The flange portion 17 can be integrally formed with the inner ring member 12. The flange portion 17 can effectively prevent the lubricant from scattering in the axial direction of the inner ring member 12.

図５は本発明の実施形態に係るトルクリミッタの実施例３の構成図である。この実施例３は、図１に示した実施例１に対し、潤滑剤の飛散防止手段を追加して設けたものであり、潤滑剤の飛散防止手段として、コイルバネ１３を囲繞する覆い部１８を内輪部材１２の端部に追加して設けたものである。図１と同一要素には同一符号を付し重複する説明は省略する。   FIG. 5 is a configuration diagram of Example 3 of the torque limiter according to the embodiment of the present invention. In the third embodiment, lubricant scattering prevention means is additionally provided to the first embodiment shown in FIG. 1, and a covering portion 18 surrounding the coil spring 13 is provided as the lubricant scattering prevention means. It is additionally provided at the end of the inner ring member 12. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

潤滑剤の飛散防止手段としての覆い部１８は、コイルバネ１３の一端を保持した外輪部材１４と反対側の内輪部材１２の端部から、外輪部材１４側に延伸してコイルバネ１３を囲繞する。この覆い部１８は内輪部材１２と一体形成することも可能である。この覆い部１８により、内輪部材１２の軸方向への潤滑剤の飛散、及び内輪部材１２の半径方向への潤滑剤の飛散を効果的に防止できる。   The cover 18 as a means for preventing the scattering of the lubricant extends from the end of the inner ring member 12 opposite to the outer ring member 14 holding one end of the coil spring 13 toward the outer ring member 14 to surround the coil spring 13. The cover portion 18 can be formed integrally with the inner ring member 12. The cover portion 18 can effectively prevent the lubricant from scattering in the axial direction of the inner ring member 12 and the lubricant from scattering in the radial direction of the inner ring member 12.

図６は本発明の実施形態に係るトルクリミッタの実施例４の構成図である。この実施例４は、図１に示した実施例１に対し、潤滑剤の飛散防止手段を追加して設けたものであり、潤滑剤の飛散防止手段として、コイルバネ１３を囲繞する覆い部１９を外輪部材１４に追加して設けたものである。図１と同一要素には同一符号を付し重複する説明は省略する。   FIG. 6 is a configuration diagram of Example 4 of the torque limiter according to the embodiment of the present invention. In the fourth embodiment, lubricant scattering prevention means is added to the first embodiment shown in FIG. 1, and a covering portion 19 surrounding the coil spring 13 is provided as the lubricant scattering prevention means. This is provided in addition to the outer ring member 14. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

潤滑剤の飛散防止手段としての覆い部１９は、コイルバネ１３の一端を保持した外輪部材１４から内輪部材１２側に延伸してコイルバネ１３を囲繞する。この覆い部１９は外輪部材１４と一体形成することも可能である。なお、コイルバネ１３と外輪部材１４とを一体形成する場合には、覆い部１９を外輪部材１４と一体形成することは困難であるので、別々に形成して取り付けることになる。この覆い部１９により、内輪部材１２の軸方向への潤滑剤の飛散、及び内輪部材１２の半径方向への潤滑剤の飛散を効果的に防止できる。   The cover 19 serving as a means for preventing the scattering of the lubricant extends from the outer ring member 14 holding one end of the coil spring 13 toward the inner ring member 12 so as to surround the coil spring 13. The cover portion 19 can be formed integrally with the outer ring member 14. When the coil spring 13 and the outer ring member 14 are integrally formed, it is difficult to form the cover portion 19 integrally with the outer ring member 14, so that they are separately formed and attached. The cover portion 19 can effectively prevent the lubricant from scattering in the axial direction of the inner ring member 12 and the lubricant from scattering in the radial direction of the inner ring member 12.

次に、本発明の実施形態のコイルバネ１３について説明する。本発明の実施形態では、コイルバネ１３は樹脂で形成することから、金型に樹脂を注入して成型することになる。コイルバネ１３は螺旋状に旋回したスパイラル部を有するので、このようなバネ形状では、３方向以上に引き抜き可能な金型をスライドさせて成型しなければならない。そのため、大型の成型機でないと成型することができないので、金型費用や製品単価が高くなる。   Next, the coil spring 13 according to the embodiment of the present invention will be described. In the embodiment of the present invention, since the coil spring 13 is formed of resin, the resin is injected into a mold and molded. Since the coil spring 13 has a spiral portion that spirally turns, in such a spring shape, a mold that can be pulled out in three or more directions must be slid and molded. Therefore, since it cannot be molded unless it is a large molding machine, the mold cost and the unit price of the product increase.

図１０は従来のコイルバネ１３を成型機で成型する場合の説明図であり、図１０（ａ）は従来のコイルバネ１３の斜視図、図１０（ｂ）は図１０（ａ）のＺ−Ｚ線での断面図である。図１０（ａ）に示すように、Ｚ−Ｚ線での断面で矢印Ａ１方向と矢印Ａ２方向との２方向に金型をスライドさせようとすると、図１０（ｂ）に示すように、コイルバネ１３は螺旋状に旋回した形状であるので、金型の引き抜き側から見て奥が広く手前が狭くなる。従って、コイルバネ１３の外周部２０の側壁部２１が金型に引っ掛かり金型を取り外すことができない。そこで、本発明の実施形態では、コイルバネ１３の形状を、２方向に金型を引き抜き可能な形状に形成する。   10A and 10B are explanatory diagrams when the conventional coil spring 13 is molded by a molding machine. FIG. 10A is a perspective view of the conventional coil spring 13, and FIG. 10B is a ZZ line in FIG. FIG. As shown in FIG. 10A, when the die is slid in the two directions of the arrow A1 direction and the arrow A2 direction in the cross section taken along the line ZZ, as shown in FIG. Since 13 is a spirally swiveled shape, the back is wide and the front is narrow as viewed from the drawing side of the mold. Therefore, the side wall portion 21 of the outer peripheral portion 20 of the coil spring 13 is caught by the mold and the mold cannot be removed. Therefore, in the embodiment of the present invention, the coil spring 13 is formed in a shape that allows the mold to be pulled out in two directions.

図７は本発明の実施形態のコイルバネ１３を成型機で成型する場合の説明図であり、図７（ａ）は本発明の実施形態のコイルバネ１３の斜視図、図７（ｂ）は図７（ａ）のＺ−Ｚ線での断面図である。図７（ａ）、図７（ｂ）に示すように、本発明の実施形態のコイルバネ１３は、直線部とスパイラル部（斜め部）とを有し、図７（ａ）に示すように、コイルバネ１３の直線部の直交する方向のＺ−Ｚ線での断面を取り、その断面で、コイルバネ１３は、金型の引き抜き側から見て手前が広くて奥が狭くなるように形成される。従って、矢印Ａ１方向と矢印Ａ２方向との２方向に金型をスライドさせても、コイルバネ１３の外周部２０の側壁部２１が金型に引っ掛かることはなくなる。   FIG. 7 is an explanatory view when the coil spring 13 according to the embodiment of the present invention is molded by a molding machine. FIG. 7A is a perspective view of the coil spring 13 according to the embodiment of the present invention, and FIG. It is sectional drawing in the ZZ line of (a). As shown in FIGS. 7A and 7B, the coil spring 13 according to the embodiment of the present invention has a straight portion and a spiral portion (an oblique portion). As shown in FIG. The cross section of the coil spring 13 taken along the Z-Z line in the direction perpendicular to the straight line is taken, and in this cross section, the coil spring 13 is formed so that the front is wide and the back is narrow as viewed from the drawing side of the mold. Therefore, even if the mold is slid in the two directions of the arrow A1 direction and the arrow A2 direction, the side wall portion 21 of the outer peripheral portion 20 of the coil spring 13 is not caught by the mold.

このように、本発明の実施形態のコイルバネ１３は、直線部とスパイラル部（斜め部）とを有し、コイルバネ１３の外周部２０の断面形状は台形状にする。そして、コイルバネ１３の直線部の直交する部分の断面で、コイルバネ１３は、金型の引き抜き側から見て手前が広くて奥が狭くなるように形成されるので、コイルバネ１３の外周部２０の側壁部２１が金型に引っ掛かることはなくなる。従って、コイルバネ１３の金型サイズを小さくでき、小型の成型機での成型が可能になり、金型費用及び製品単価を抑制できる。   As described above, the coil spring 13 according to the embodiment of the present invention has a straight portion and a spiral portion (an oblique portion), and the outer peripheral portion 20 of the coil spring 13 has a trapezoidal cross-sectional shape. Since the coil spring 13 is formed so that the front side is wide and the back side is narrow as viewed from the drawing side of the mold, the side wall of the outer peripheral portion 20 of the coil spring 13 is formed in the cross section of the orthogonal portion of the linear portion of the coil spring 13. The part 21 is not caught by the mold. Accordingly, the mold size of the coil spring 13 can be reduced, and molding with a small molding machine is possible, so that the mold cost and the product unit price can be suppressed.

図８は本発明の実施形態に係るトルクリミッタユニットの一例の構成図である。この一例のトルクリミッタユニットは、図１に示したトルクリミッタ１１にシャフト２２を装着したものである。樹脂で円筒状に形成された内輪部材１２にシャフト２２を貫通して、トルクリミッタユニットを形成している。シャフト２２は、シャフト２２に設けられたシャフト連結部２３が内輪部材１２の内面に設けられたシャフト連結溝部１２Ａに係合して、シャフト２２は内輪部材１２に連結される。   FIG. 8 is a configuration diagram of an example of a torque limiter unit according to the embodiment of the present invention. The torque limiter unit of this example is obtained by mounting a shaft 22 on the torque limiter 11 shown in FIG. A torque limiter unit is formed by penetrating the shaft 22 through the inner ring member 12 formed in a cylindrical shape with resin. In the shaft 22, the shaft coupling portion 23 provided on the shaft 22 engages with a shaft coupling groove portion 12 </ b> A provided on the inner surface of the inner ring member 12, and the shaft 22 is coupled to the inner ring member 12.

図８では、図１に示した実施例１のトルクリミッタ１１にシャフト２２を装着したトルクリミッタユニットを示したが、図２に示した実施例２、図３に示した実施例３、図４に示した実施例４のトルクリミッタ１１にシャフト２２を装着し、トルクリミッタユニットを形成するようにしてもよい。   8 shows the torque limiter unit in which the shaft 22 is mounted on the torque limiter 11 of the first embodiment shown in FIG. 1, but the second embodiment shown in FIG. 2, the third embodiment shown in FIG. 3, and the fourth embodiment shown in FIG. A torque limiter unit may be formed by attaching the shaft 22 to the torque limiter 11 of the fourth embodiment shown in FIG.

図９は本発明の実施形態に係るトルクリミッタユニットの他の一例の構成図である。この他の一例のトルクリミッタユニットは、図８に示したトルクリミッタユニットに対し、トルクリミッタ１１の外輪部材１４に回転ローラ部材２４を追加して取り付けたものである。図８と同一要素には、同一符号を付し重複する説明は省略する。   FIG. 9 is a configuration diagram of another example of the torque limiter unit according to the embodiment of the present invention. In another example of the torque limiter unit, a rotating roller member 24 is additionally attached to the outer ring member 14 of the torque limiter 11 with respect to the torque limiter unit shown in FIG. The same elements as those in FIG. 8 are denoted by the same reference numerals, and redundant description is omitted.

このトルクリミッタユニットのトルクリミッタ１１に回転ローラ部材２４が取り付けられている。回転ローラ部材２４のローラ部２５は、例えば、複写機の用紙ストックからカット紙を連続して送り出すゴムローラである。   A rotating roller member 24 is attached to the torque limiter 11 of the torque limiter unit. The roller portion 25 of the rotating roller member 24 is, for example, a rubber roller that continuously feeds cut sheets from a sheet stock of a copying machine.

図９では、図１に示した実施例１のトルクリミッタ１１にシャフト２２を装着したトルクリミッタユニットを示したが、図２に示した実施例２、図３に示した実施例３、図４に示した実施例４のトルクリミッタ１１にシャフト２２を装着してもよい。   9 shows the torque limiter unit in which the shaft 22 is mounted on the torque limiter 11 of the first embodiment shown in FIG. 1, the second embodiment shown in FIG. 2, the third embodiment shown in FIG. 3, and the fourth embodiment shown in FIG. The shaft 22 may be attached to the torque limiter 11 of the fourth embodiment shown in FIG.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１１…トルクリミッタ、１２…内輪部材、１２Ａ…シャフト連結溝部、１３…コイルバネ、１３Ａ…後端部、１３Ｂ…先端部、１４…外輪部材、１５…凸部、１６…凹部、１７…鍔部、１８…覆い部、１９…覆い部、２０…外周部、２１…側壁部、２２…シャフト、２３…シャフト連結部、２４…回転ローラ部材、２５…ローラ部 DESCRIPTION OF SYMBOLS 11 ... Torque limiter, 12 ... Inner ring member, 12A ... Shaft coupling groove part, 13 ... Coil spring, 13A ... Rear end part, 13B ... Tip part, 14 ... Outer ring member, 15 ... Convex part, 16 ... Concave part, 17 ... Butt part, DESCRIPTION OF SYMBOLS 18 ... Cover part, 19 ... Cover part, 20 ... Outer peripheral part, 21 ... Side wall part, 22 ... Shaft, 23 ... Shaft coupling part, 24 ... Rotating roller member, 25 ... Roller part

Claims (8)

樹脂で形成された円筒状の内輪部材と、
前記内輪部材の外周面に潤滑剤を介して締まり嵌めされ前記内輪部材の外周面と接触するコイルバネと、
前記コイルバネの後端部を保持する外輪部材と、
前記コイルバネと接触する前記内輪部材の外周面のうち前記コイルバネの先端部が接触する部分を除いた外周面に形成された複数の凸部とを備え、
前記内輪部材と前記外輪部材との間のトルクが所定値以下のときは前記コイルバネがスリップせずに前記内輪部材と前記外輪部材との間でトルク伝達を行い、前記内輪部材と前記外輪部材との間のトルクが所定値を超えたときは前記コイルバネがスリップして前記内輪部材と前記外輪部材との間のトルク伝達を遮断することを特徴とするトルクリミッタ。 A cylindrical inner ring member made of resin;
A coil spring that is tightly fitted to the outer peripheral surface of the inner ring member via a lubricant and is in contact with the outer peripheral surface of the inner ring member;
An outer ring member for holding a rear end portion of the coil spring;
A plurality of convex portions formed on the outer peripheral surface of the outer peripheral surface of the inner ring member that is in contact with the coil spring, excluding a portion that is in contact with the tip of the coil spring;
When the torque between the inner ring member and the outer ring member is a predetermined value or less, the coil spring does not slip and torque is transmitted between the inner ring member and the outer ring member, and the inner ring member and the outer ring member A torque limiter characterized in that when the torque between them exceeds a predetermined value, the coil spring slips to interrupt torque transmission between the inner ring member and the outer ring member. 前記潤滑剤の飛散防止手段を設けたことを特徴とする請求項１に記載のトルクリミッタ。   The torque limiter according to claim 1, further comprising means for preventing scattering of the lubricant. 前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材と反対側の前記内輪部材の端部に設けられた鍔部であることを特徴とする請求項２に記載のトルクリミッタ。   The torque limiter according to claim 2, wherein the scattering prevention means is a flange provided at an end of the inner ring member opposite to the outer ring member that holds one end of the coil spring. 前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材と反対側の前記内輪部材の端部から前記外輪部材側に延伸して前記コイルバネを囲繞する覆い部であることを特徴とする請求項２に記載のトルクリミッタ。   The scattering prevention means is a cover portion that extends from an end portion of the inner ring member opposite to the outer ring member holding one end of the coil spring to the outer ring member side and surrounds the coil spring. Item 3. The torque limiter according to Item 2. 前記飛散防止手段は、前記コイルバネの一端を保持した前記外輪部材から前記内輪部材側に延伸して前記コイルバネを囲繞する覆い部であること特徴とする請求項２に記載のトルクリミッタ。   3. The torque limiter according to claim 2, wherein the scattering prevention means is a cover portion that extends from the outer ring member holding one end of the coil spring toward the inner ring member and surrounds the coil spring. 前記コイルバネは、２方向に金型が引き抜き可能な形状であることを特徴とする請求項１乃至５のいずれか１項に記載のトルクリミッタ。   The torque limiter according to any one of claims 1 to 5, wherein the coil spring has a shape in which a mold can be pulled out in two directions. 前記請求項１乃至６のいずれか１項に記載のトルクリミッタと、
前記トルクリミッタの前記内輪部材を貫通して設けられ前記内輪部材に連結されたシャフトとを備えたことを特徴とするトルクリミッタユニット。 The torque limiter according to any one of claims 1 to 6,
A torque limiter unit comprising: a shaft provided through the inner ring member of the torque limiter and connected to the inner ring member. 前記トルクリミッタの前記外輪部材に回転ローラ部材を取り付けたことを特徴とする請求項７に記載のトルクリミッタユニット。   The torque limiter unit according to claim 7, wherein a rotation roller member is attached to the outer ring member of the torque limiter.
JP2013120643A 2013-06-07 2013-06-07 Torque limiter and torque limiter unit Pending JP2014238131A (en)

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