WO2015133359A1 - 逆入力遮断クラッチ - Google Patents
逆入力遮断クラッチ Download PDFInfo
- Publication number
- WO2015133359A1 WO2015133359A1 PCT/JP2015/055596 JP2015055596W WO2015133359A1 WO 2015133359 A1 WO2015133359 A1 WO 2015133359A1 JP 2015055596 W JP2015055596 W JP 2015055596W WO 2015133359 A1 WO2015133359 A1 WO 2015133359A1
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- WIPO (PCT)
- Prior art keywords
- input
- output shaft
- shaft
- output
- rotational force
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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
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
Definitions
- the present invention relates to a reverse input cut-off clutch in which bidirectional torque from the input side is transmitted to the output side, but torque from the output side is not transmitted to the input side.
- the reverse input cutoff clutch transmits bidirectional driving force from the input side to the output side, but prevents rotational force from the output side from being transmitted to the input side (see, for example, Patent Document 1).
- 3 is an explanatory view showing an example of a conventional reverse input cutoff clutch 11.
- FIG. 3 (a) is a configuration diagram
- FIG. 3 (b) is a perspective view of the input shaft 12
- FIG. 3 (c) is an output shaft.
- 13 is a perspective view of FIG. In FIG. 3A, the upper half is shown in a sectional view.
- the reverse input shut-off clutch 11 transmits a bidirectional rotational force input to the input shaft 12 in the forward direction and the reverse direction to the output shaft 13, and the bidirectional rotational force from the input shaft 12 is applied to the output shaft. 13, but the rotational force from the output shaft 13 is not transmitted to the input shaft 12.
- the outer ring 14 stores a transmission mechanism for achieving this function, the input shaft 12 of the outer ring 14 is provided with a lid 15, and the side wall 16 is formed on the output shaft 13 side of the outer ring 14. Yes.
- the transmission mechanism includes an input member 12A that engages with the input shaft 12, an output member 13A that is provided on the output shaft 13, and a rolling member 17 that contacts the inner surface of the outer ring.
- the input shaft 12 is coupled to an input member 12A, and the input member 12A is provided with a plurality of input engagement portions 12B.
- the output shaft 13 has an output member 13A, and the output member 13A is provided with a plurality of output engaging portions 13B.
- the input shaft 12 and the output shaft 13 have a plurality of input engagement portions 12B and a plurality of output engagement portions 13B that are alternately fitted, and a flat portion of the input member 12A and a flat portion of the output member 13A are flat surfaces. Contact in contact.
- a contact portion between the flat surface portion of the input member 12A and the flat surface portion of the output member 13A is referred to as a contact portion between the input shaft 12 and the output shaft 13.
- FIG. 4 is an operation explanatory diagram of the conventional reverse input cutoff clutch 11.
- FIG. 4A is an explanatory diagram of the positional relationship among the rolling member 17, the input engagement portion 12B, and the output engagement portion 13B in a stationary state in which no rotational force is applied to either the input shaft 12 or the output shaft 13.
- FIG. 4B is an explanatory diagram of the positional relationship between the rolling member 17, the input engagement portion 12B, and the output engagement portion 13B when a counterclockwise rotational force is applied to the output shaft 13.
- FIG. ) Is an explanatory diagram of the positional relationship of the rolling member 17, the input engagement portion 12B, and the output engagement portion 13B when a counterclockwise rotational force is applied to the input shaft 12.
- the rolling member 17 in a stationary state in which neither the input shaft 12 nor the output shaft 13 is applied with a rotational force, the rolling member 17 is positioned substantially at the center of the output engagement portion 13B. Further, the rolling member 17 faces the output engagement portion 13B with a slight distance, and the rolling member 17 faces the inner wall surface 18 of the outer ring 14 with a slight gap.
- the output engaging portion 13B has a rotational force in the direction of the left arrow.
- the output engagement portion 13B moves in the direction of the left arrow. Since the output engagement portion 13B operates freely and smoothly independently within a certain rotation range (interval between adjacent input engagement portions 12B), the input engagement portion 12B does not operate. Accordingly, as the output engagement portion 13B moves in the left arrow direction, the rolling member 17 is pushed upward by the output engagement portion 13B.
- the input engagement portion 12B rotates in the direction of the left arrow as shown in FIG. 4C.
- the side surface of the input engagement portion 12B comes into contact with the side surface of the output engagement portion 13B or the side surface of the rolling member 17.
- the side surface of the input engagement portion 12B comes into contact with both the output engagement portion 13B and the side surface of the rolling member 17, and the input engagement portion 12B Without engaging the rolling member 17 between the output engaging portion 13B and the inner wall surface 18 of the outer ring 14, the output engaging portion 13B and the rolling member 17 are pushed in the left arrow direction.
- the rotational force applied to the output shaft 13 may not be prevented by repeated operation of the reverse input cutoff clutch.
- an adhesive substance formed of oil such as grease and friction powder is generated, and the contact portion between the input shaft 12 and the output shaft 13 is in a state where the input engagement portion 12B and the output engagement portion 13B are in contact. Occurs when integrated by sticking.
- the contact portion between the input shaft 12 and the output shaft 13 is in a flat surface contact state, in the case of a small reverse input cutoff clutch, the input shaft 12 and the output shaft 13 are caused by the adhesive substance. The abutting part is easily adhered and integrated. If the contact portion between the input shaft 12 and the output shaft 13 is integrated with the input engagement portion 12B and the output engagement portion 13B being in contact, the rotational force applied to the output shaft 13 cannot be blocked.
- FIG. 5 is an operation explanatory diagram when the contact portion between the input shaft 12 and the output shaft 13 is integrated and the rotational force of the output shaft 13 cannot be prevented.
- FIG. 5A is a diagram illustrating the operation of the input engagement portion 12B and the output engagement. Description of the positional relationship among the rolling member 17, the input engagement portion 12B, and the output engagement portion 13B when the contact portion between the input shaft 12 and the output shaft 13 is integrated with the joint portion 13B in contact 5B is a positional relationship among the rolling member 17, the input engagement portion 12B, and the output engagement portion 13B when a counterclockwise rotational force is applied to the output shaft 13 in the state of FIG. 5A. It is explanatory drawing of.
- the object of the present invention is to prevent reverse input blocking that can prevent the contact portion between the input shaft and the output shaft from sticking and being integrated even if an adhesive material is generated, and can block the rotational force applied to the output shaft. Is to provide a clutch.
- the reverse input shut-off clutch of the present invention includes an input shaft to which rotational force is input, an output shaft that outputs rotational force, and rotation of the output shaft when rotational force is applied to the input shaft.
- the transmission mechanism portion that prevents rotation of the input shaft when a rotational force is applied, the adhesion prevention portion that prevents the contact portion between the input shaft and the output shaft from sticking, and the transmission mechanism portion are housed.
- An outer ring is provided.
- the adhesion preventing portion for preventing the contact portion between the input shaft and the output shaft from sticking is provided, the contact portion between the input shaft and the output shaft does not adhere even if an adhesive substance is generated. Can be prevented from being integrated. As a result, the output shaft can ensure a free and smooth independent operation within a fixed rotation range, and thus the rotational force applied to the output shaft can be reliably prevented.
- Explanatory drawing which shows the various examples of the reverse input interruption
- Explanatory drawing which shows another example of the reverse input interruption
- FIG. 1 is an explanatory view showing various examples of a reverse input cutoff clutch according to an embodiment of the present invention.
- FIG. 1 (a) is an overall view of the reverse input cutoff clutch (the upper half is shown in a sectional view)
- FIG. b) and (b ′) are an enlarged view and a perspective view, respectively, of an example of the anti-adhesion part in the X1 portion of FIG. 1A
- FIGS. 1C and 1C are respectively FIG. 1A and FIG. It is an enlarged view and perspective view of the other example of X1 part.
- FIGS. 1D and 1E are perspective views showing still another example of the adhesion preventing portion.
- the reverse input cutoff clutch according to the embodiment of the present invention is added with an adhesion preventing portion 19 for preventing the contact portion between the input shaft 12 and the output shaft 13 from sticking to the conventional example shown in FIG. It is provided.
- the same elements as those in FIG. 3 are denoted by the same reference numerals, and redundant description is omitted.
- the transmission mechanism of the reverse input cutoff clutch includes an input member 12A coupled to the input shaft 12 (in the reverse input cutoff clutch of the embodiment of FIG. 1, the input member 12A includes a separate input shaft 12). Are inserted in such a manner that they cannot rotate relative to each other), and an output member 13A provided on the output shaft 13 and a rolling member 17 that contacts the inner surface of the outer ring 14. And the plane part of 12 A of input members and the plane part of 13 A of output members are in the state which opposes. In order to prevent the rotational force from the output shaft 13, the opposing portion between the input shaft 12 and the output shaft 13 is free and smooth independent operation within a certain rotation range (the input shaft 12 and the output shaft 13 as described above). 13 relative free rotation).
- the facing portion between the input shaft 12 and the output shaft 13 is not opposed to the input shaft 12 and the output shaft 13 so that the facing portion between the input shaft 12 and the output shaft 13 abuts and adheres in a flat surface contact state.
- the anti-adhesion part 19 was provided.
- FIG.1 (b) is an enlarged view of an example of X1 part (adhesion prevention part 19 part) of Fig.1 (a).
- the anti-adhesion part 19 is a contact area reducing part configured to reduce the contact area between the input member 12A and the output member 13A.
- the adhesion preventing part 19 protrudes from the input member 12A.
- the provided tip is an R-shaped (arc-shaped cross section) protrusion. By making the tip part of the protrusion part into an R shape, the contact between the input member 12A and the output member 13A is a line contact.
- FIG. 1B ′ is an overall perspective view of the input member 12A provided with the adhesion preventing portion 19 shown in FIG. 1B and the output member 13A (output shaft 13) facing each other. As can be seen from this, the anti-adhesion part 19 is continuously formed over the entire circumference around the central axis of the input shaft 12 (or the output shaft 13) on the opposing surface of the input member 12A.
- FIG.1 (c) is an enlarged view of the other example of X1 part (adhesion prevention part 19 part) of Fig.1 (a). Similar to FIG. 1B, the adhesion preventing unit 19 is the same in that it is a contact area reducing unit configured to reduce the contact area between the input member 12A and the output member 13A.
- the tip of the protrusion 1b is R-shaped, whereas in FIG. 1C, the tip of the protrusion is trapezoidal.
- FIG.1 (c ') is a whole perspective view of 12 A of input members which provided the adhesion prevention part 19 shown in FIG.1 (c).
- the anti-adhesion part 19 in FIG. 1C extends over the entire circumference around the central axis of the input shaft 12 (or output shaft 13) on the opposite surface of the input member 12A, as in FIG. 1B. It is formed continuously.
- FIG. 1 (d) and 1 (e) are perspective views similar to FIG. 1 (c ′) showing another example of the X1 portion (the adhesion preventing portion 19 portion) of FIG. 1 (a).
- the anti-adhesion part 19 of FIG.1 (d) cuts off several places of FIG.1 (c '), and formed the antiadhesion part 19 intermittently, Moreover, the anti-adhesion part of FIG.1 (e)
- Reference numeral 19 denotes a plurality of independent hemispherical protrusions formed on the opposing surface of the input member 12A.
- FIG. 2 is an explanatory view showing another example of the reverse input cutoff clutch according to the embodiment of the present invention
- FIG. 2 (b) is an enlarged view of the X2 portion (the adhesion preventing portion 19 portion) of FIG. 2 (a). is there.
- the anti-adhesion part 19 is configured by providing a recess in the input member 12A and the output member 13A, and providing a rolling body in the recess. Thereby, a rolling body is rolled without making input member 12A and output member 13A contact directly.
- a rolling body for example, a ball for bearing is used.
- the contact between the input member 12A and the output member 13A is an indirect contact via the rolling body, and the contact between the rolling body and the input member 12A or the output member 13A is a point contact. Even if the adhesive substance formed with the friction powder is generated, the input member 12A and the output member 13A can be prevented from sticking. Therefore, the abutment portion between the input shaft 12 and the output shaft 13 is not adhered and integrated, and a free and smooth independent operation in the constant rotation range of the output shaft 13 can be secured. Can prevent rotational force.
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- Transmission Devices (AREA)
Abstract
Description
図1(b´)は、図1(b)に示す粘着防止部19を設けた入力部材12Aと、対向する出力部材13A(出力軸13)の全体的な斜視図である。これから分かるように、粘着防止部19は、入力部材12Aの対向面において、入力軸12(又は出力軸13)の中心軸の周りに全周に亘り連続的に形成されている。
図1(c´)は、図1(c)に示す粘着防止部19を設けた入力部材12Aの全体的な斜視図である。図1(c)の粘着防止部19は、図1(b)のものと同様に、入力部材12Aの対向面において、入力軸12(又は出力軸13)の中心軸の周りに全周に亘り連続的に形成されている。
Claims (5)
- 回転力が入力される入力軸と、
回転力を出力する出力軸と、
前記入力軸に回転力が与えられると前記出力軸の回転を許可し前記出力軸に回転力が与えられると前記入力軸の回転を阻止する伝達機構部と、
前記入力軸と前記出力軸との当接部が粘着することを防止する粘着防止部と、
前記伝達機構部を収納した外輪とを備えたことを特徴とする逆入力遮断クラッチ。 - 前記粘着防止部は、前記入力軸と前記出力軸との当接部の接触面積を低減する接触面積低減部であることを特徴とする請求項1記載の逆入力遮断クラッチ。
- 前記粘着防止部は、前記入力軸と前記出力軸との対向面の一方に形成した突起であることを特徴とする請求項2記載の逆入力遮断クラッチ。
- 前記突起は、断面が円弧状であり、かつ、前記入力軸又は前記出力軸の中心軸の周りに全周に亘って形成されていることを特徴とする請求項3記載の逆入力遮断クラッチ。
- 前記粘着防止部は、前記入力軸と前記出力軸との当接部の間に設けられた転がり体であることを特徴とする請求項1記載の逆入力遮断クラッチ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2016506446A JP6046859B2 (ja) | 2014-03-04 | 2015-02-26 | 逆入力遮断クラッチ |
CN201580011683.3A CN106255838A (zh) | 2014-03-04 | 2015-02-26 | 反向输入阻断离合器 |
KR1020167024174A KR20160128322A (ko) | 2014-03-04 | 2015-02-26 | 역입력 차단 클러치 |
Applications Claiming Priority (2)
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JP2014-041845 | 2014-03-04 | ||
JP2014041845 | 2014-03-04 |
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WO2015133359A1 true WO2015133359A1 (ja) | 2015-09-11 |
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PCT/JP2015/055596 WO2015133359A1 (ja) | 2014-03-04 | 2015-02-26 | 逆入力遮断クラッチ |
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JP (1) | JP6046859B2 (ja) |
KR (1) | KR20160128322A (ja) |
CN (1) | CN106255838A (ja) |
TW (1) | TW201600755A (ja) |
WO (1) | WO2015133359A1 (ja) |
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CN107061544A (zh) * | 2017-05-04 | 2017-08-18 | 哈尔滨工业大学 | 一种实现多种工作模式的膨胀式反向自锁保护机构 |
JP6356892B1 (ja) * | 2017-09-29 | 2018-07-11 | オリジン電気株式会社 | 小型構造の逆入力遮断クラッチ |
CN110848284A (zh) * | 2018-08-20 | 2020-02-28 | 锅屋百泰株式会社 | 带反向输入阻断离合器的电动机及反向输入阻断离合器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02122212U (ja) * | 1989-03-20 | 1990-10-05 | ||
JP2007032634A (ja) * | 2005-07-25 | 2007-02-08 | Origin Electric Co Ltd | 逆入力遮断クラッチ |
JP2008283754A (ja) * | 2007-05-09 | 2008-11-20 | Jtekt Corp | 電動モータおよび電動ポンプ |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6136809Y2 (ja) * | 1981-05-30 | 1986-10-25 |
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2015
- 2015-02-26 KR KR1020167024174A patent/KR20160128322A/ko unknown
- 2015-02-26 WO PCT/JP2015/055596 patent/WO2015133359A1/ja active Application Filing
- 2015-02-26 CN CN201580011683.3A patent/CN106255838A/zh active Pending
- 2015-02-26 JP JP2016506446A patent/JP6046859B2/ja active Active
- 2015-03-04 TW TW104106749A patent/TW201600755A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02122212U (ja) * | 1989-03-20 | 1990-10-05 | ||
JP2007032634A (ja) * | 2005-07-25 | 2007-02-08 | Origin Electric Co Ltd | 逆入力遮断クラッチ |
JP2008283754A (ja) * | 2007-05-09 | 2008-11-20 | Jtekt Corp | 電動モータおよび電動ポンプ |
Also Published As
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JPWO2015133359A1 (ja) | 2017-04-06 |
JP6046859B2 (ja) | 2016-12-21 |
TW201600755A (zh) | 2016-01-01 |
CN106255838A (zh) | 2016-12-21 |
KR20160128322A (ko) | 2016-11-07 |
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