WO2010067666A1 - 一方向クラッチ - Google Patents
一方向クラッチ Download PDFInfo
- Publication number
- WO2010067666A1 WO2010067666A1 PCT/JP2009/068224 JP2009068224W WO2010067666A1 WO 2010067666 A1 WO2010067666 A1 WO 2010067666A1 JP 2009068224 W JP2009068224 W JP 2009068224W WO 2010067666 A1 WO2010067666 A1 WO 2010067666A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- way clutch
- outer shaft
- roller
- shaft
- clutch according
- Prior art date
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Classifications
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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
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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
- F16D2041/0605—Spring details
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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
- F16D2041/0665—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 characterised by there being no cage other than the inner and outer race for distributing the intermediate members
Definitions
- the present invention relates to a one-way clutch using an elastic member.
- a conventional one-way clutch includes, for example, an outer shaft, a plurality of rollers, and a plurality of elastic members.
- the outer shaft is disposed on the outer peripheral side of the shaft member, and has an annular main body portion and a plurality of projecting portions projecting radially inward from the main body portion.
- a roller and an elastic member are arranged between the rotation directions of adjacent protrusions. The elastic member presses the roller to one side in the rotational direction (see, for example, Patent Document 1).
- the protruding portion protrudes greatly inward in the radial direction from the main body portion, the unevenness of the inner peripheral portion of the outer shaft is large. For this reason, it is difficult to reduce the processing cost of the outer shaft, and it is difficult to reduce the manufacturing cost of the one-way clutch.
- An object of the present invention is to provide a one-way clutch capable of reducing manufacturing costs.
- the one-way clutch according to the present invention includes an outer shaft, a roller, an elastic member, and a plate member.
- the outer shaft is disposed radially outside the shaft member.
- the roller is disposed between the shaft member and the outer shaft in the radial direction.
- the elastic member is disposed between the shaft member and the outer shaft in the radial direction, and applies a pressing force to the roller.
- the plate member has a plate main body and a support part.
- the plate body is mounted on the outer shaft.
- the support portion protrudes in the axial direction from the plate body, and supports the end portion of the elastic member in the pressing direction in which the elastic member presses the roller.
- the plate member since the plate member has a support portion for supporting the end portion of the elastic member in the pressing direction, the end portion of the elastic member can be supported not only by the outer shaft but also by the plate member. For this reason, even if the unevenness
- FIG. 5 is a VV cross-sectional view of FIG. 3.
- FIG. 1 is a schematic plan view of the one-way clutch 1.
- FIG. 2 is a partially enlarged view of the one-way clutch 1. 1 and 2, an arrow R1 indicates the rotation direction of the shaft member 2, and an arrow R2 indicates the opposite direction.
- a point O in FIG. 1 indicates the rotation axis of the shaft member 2.
- FIG. 3 is a partially enlarged view of the cover plate 9.
- FIG. 4 is a perspective view of the support portion 93. 5 is a cross-sectional view taken along the line VV of FIG.
- the one-way clutch 1 is a mechanism for restricting relative rotation between a shaft member 2 and another member (not shown) only in one specific direction. Is provided.
- the one-way clutch 1 restricts the rotation of the shaft member 2 in the R1 direction relative to other members (not shown), and allows the rotation of the shaft member 2 in the R2 direction relative to the other members.
- the one-way clutch 1 has an outer shaft 3, a plurality of rollers 6, a plurality of accordion springs 7 (an example of an elastic member), and a cover plate 9 (an example of a plate member).
- the outer shaft 3 is a generally annular member disposed on the outer side in the radial direction of the shaft member 2.
- the roller 6 is disposed between the shaft member 2 and the outer shaft 3 in the radial direction.
- the accordion spring 7 applies a pressing force to the roller 6 generally in the R1 direction.
- One side surface of the outer shaft 3 is covered with a cover (not shown).
- the outer shaft 3 is disposed on the outer side in the radial direction of the shaft member 2, and other members (not shown) are fixed thereto.
- the outer shaft 3 includes a substantially annular main body 31 disposed on the outer peripheral side of the shaft member 2 and a plurality of protrusions 32 that protrude radially inward from the main body 31.
- the six projecting portions 32 are arranged at an equal pitch (60-degree pitch) in the rotation direction.
- this pitch is referred to as a reference pitch.
- the main body 31 has six inclined surfaces 31 a arranged between the rotation directions of adjacent protrusions 32.
- the inclined surface 31a is substantially flat and is inclined so as to approach the shaft member 2 as it goes in the R1 direction. For this reason, the radial gap formed between the inclined surface 31a and the shaft member 2 gradually decreases in the R1 direction.
- the protrusion 32 is arranged between the rotation directions of the adjacent rollers 6.
- the radial dimension of the protrusion 32 is about half of the radial dimension of the accordion spring 7.
- Three holes 33 for bolts are formed at the same rotational position as the protrusion 32.
- the holes 33 are arranged at an equal pitch (120 degree pitch) in the rotation direction.
- the pitch of the holes 33 is twice the reference pitch.
- the hole 33 is disposed within a range of an opening 91 a (described later) formed in the plate body 91 of the cover plate 9. For this reason, it is not necessary to provide a hole corresponding to the hole 33 in the plate body 91.
- a gap is secured between the protruding portion 32 and the shaft member 2 in the radial direction, and a part of a support portion 93 (described later) is disposed in the gap.
- a roller 6 is disposed between the rotation directions of adjacent protrusions 32.
- the roller 6 is disposed between the shaft member 2 and the main body 31 in the radial direction. It can also be said that the roller 6 is disposed between the shaft member 2 and the outer shaft 3 in the radial direction.
- the roller 6 is a cylindrical member for restricting or allowing relative rotation between the shaft member 2 and the outer shaft 3, and is pressed substantially in the R ⁇ b> 1 direction by an accordion spring 7.
- the main body 31 and the protrusion 32 form a pocket 11 that is a space in which the roller 6 is disposed.
- the roller 6 is rotatable.
- the radial gap formed between the inclined surface 31a and the shaft member 2 is set smaller than the outer diameter of the roller 6, and therefore the shaft member 2 and the inclined surface 31a The roller 6 is sandwiched between them, and the relative rotation of the shaft member 2 and the outer shaft 3 is restricted by the roller 6.
- the one-way clutch 1 is provided with a plurality of accordion springs 7.
- the accordion spring 7 is formed by bending a plate-like spring material.
- the accordion spring 7 has a first end 71 disposed on the R1 side and a second end 72 disposed on the R2 side.
- the first end portion 71 is in contact with the roller 6, and the second end portion 72 is in contact with a support portion 93 (described later) of the cover plate 9.
- the accordion spring 7 is disposed between the roller 6 and the support portion 93 in a compressed state.
- a cover plate 9 is disposed on the side of the outer shaft 3 in the axial direction so that the roller 6 does not fall from between the shaft member 2 and the outer shaft 3.
- the cover plate 9 includes a disk-shaped plate body 91 and a plurality of support portions 93.
- the six support portions 93 are arranged at an equal pitch (reference pitch) in the rotation direction.
- the plate main body 91 has a cylindrical portion 92 fitted into the outer peripheral portion of the outer shaft 3.
- the cylindrical portion 92 extends in the axial direction from the outer peripheral portion of the plate body 91.
- the support portion 93 is a portion for supporting the second end portion 72 of the accordion spring 7 and is integrally formed with the plate main body 91.
- the support part 93 protrudes from the plate body 91 in the axial direction, and is formed by bending a part of the plate body 91.
- the support portion 93 is formed to be bent inward in the radial direction.
- an opening 91 a is formed in the plate body 91.
- the opening 91a is disposed on the radially outer side of the support portion 93, and the support portion 93 is connected to the edge of the opening 91a.
- the inner peripheral portion of the plate body 91 is connected by an annular portion. For this reason, compared with the case where the inner peripheral part of the plate main body 91 is notched, the intensity
- the support part 93 is a part integrally formed with the plate body 91, and includes a first part 94, a second part 95, a third part 97, and a fourth part 96.
- the first portion 94 is a portion that supports the second end 72 of the accordion spring 7, and is in contact with the second end 72 in the pressing direction in which the accordion spring 7 presses the roller 6.
- the pressing direction is, for example, a direction in which the accordion spring 7 expands and contracts, and is a direction parallel to the axis C (see FIG. 2) of the accordion spring 7.
- the first portion 94 is sandwiched between the second end 72 of the accordion spring 7 and the protrusion 32.
- the radially outer portion of the first portion 94 is in contact with the protruding portion 32 of the outer shaft 3 in the pressing direction.
- the radially inner portion of the first portion 94 protrudes radially inward from the protruding portion 32. That is, a part of the first portion 94 is supported by the outer shaft 3 in the pressing direction.
- the second end portion 72 is supported in the pressing direction by the protruding portion 32 of the outer shaft 3 and the first portion 94 of the support portion 93.
- the second portion 95 is a portion fixed to the plate body 91 and extends from the first portion 94 to the side opposite to the accordion spring 7. More specifically, the second portion 95 is a portion of the support portion 93 that is connected to the plate main body 91 and extends in the axial direction from the edge of the opening 91a. The first portion 94 is supported by the second portion 95. More specifically, the second portion 95 is connected to an end portion on the radially inner side of the first portion 94, and is disposed on the radially inner side of the protruding portion 32. A gap is secured between the protrusion 32 and the second portion 95 in the radial direction.
- the third portion 97 is a portion that prevents the roller 6 from falling off inward in the radial direction before the one-way clutch 1 is attached to the shaft member 2, and is opposite to the first portion 94 of the second portion 95. It is arranged at the end.
- the third portion 97 extends radially inward from the end of the second portion 95.
- the position of the third portion 97 in the rotation direction is substantially the same as the position of the end portion on the R2 side of the protrusion 32.
- the roller 6 In a state before the one-way clutch 1 is attached to the shaft member 2, the roller 6 is displaced in the R1 direction by the pressing force of the accordion spring 7. In this case, since the third portion 97 abuts on and supports the roller 6, the roller 6 does not fall off radially inward even without the shaft member 2.
- the fourth portion 96 is a portion that restricts the movement of the second end 72 of the accordion spring 7 inward in the radial direction, and protrudes inward in the radial direction from the first portion 94.
- the fourth portion 96 is bent toward the accordion spring 7, and the end portion of the fourth portion 96 enters inside the second end portion 72 in the radial direction. That is, since the end portion of the fourth portion 96 can come into contact with the second end portion 72 in the radial direction, the radial position of the second end portion 72 is stabilized.
- the cover plate 9 has a support portion 93 that supports the second end 72 of the accordion spring 7 in the pressing direction (direction parallel to the axis C).
- the cover plate 9 can support the second end 72 of the accordion spring 7. For this reason, even if the unevenness
- the first portion 94 is supported by the outer shaft 3 in the pressing direction. More specifically, the first portion 94 is sandwiched between the second end portion 72 and the protruding portion 32. For this reason, the force which the 1st part 94 receives from the 2nd edge part 72 of the accordion spring 7 can be distributed to the cover plate 9 and the outer shaft 3, and the support part 93 can be made a simple structure.
- the first portion 94 projects radially inward from the projecting portion 32 in a state where the first portion 94 is sandwiched between the second end portion 72 and the projecting portion 32, the dimensions of the projecting portion 32. It is possible to secure an area for supporting the accordion spring 7 while keeping the value small.
- the strength of the support portion 93 against the force in the rotation direction can be increased with a simple configuration.
- the strength of the entire first portion 94 is improved even if the first portion 94 protrudes radially inward from the protrusion 32. Can be secured.
- the second portion 95 is disposed on the radially inner side of the projecting portion 32 via a gap, the position of the second portion 95 is further disposed on the radially inner side. Thereby, it becomes easy to ensure a large area for the first portion 94 to support the second end portion 72 of the accordion spring 7.
- the support portion 93 has the third portion 97, the roller 6 is supported by the third portion 97 even when the radial dimension of the protruding portion 32 is small, and the radius is obtained even without the shaft member 2.
- the roller 6 does not fall off inward. That is, the assembly property of the one-way clutch 1 can be improved.
- the support portion 93 includes the fourth portion 96, the movement of the second end portion 72 of the accordion spring 7 in the radial direction can be restricted. Thereby, it is possible to prevent the accordion spring 7 from falling off the support portion 93.
- the pitch of the holes 33 is an integral multiple (twice) of the pitch (reference pitch) of the openings 91a, the position of the holes 33 is surely aligned with the position of the openings 91a when the cover plate 9 is assembled to the outer shaft 3. be able to. For this reason, the assembly
- the opening 91 a is disposed on the outer side in the radial direction of the support portion 93. Since the support portion 93 is disposed on the radially inner side of the protruding portion 32, the opening 91 a is disposed at a position where the opening 91 a overlaps the protruding portion 32 when viewed from the axial direction.
- the hole 33 is easily provided.
- the hole 33 can be easily disposed within the range of the opening 91a. Thereby, the assembly
- the inner peripheral portion of the plate main body 91 can be maintained in an annular shape without being cut out. Thereby, even if the support part 93 is formed, the strength of the cover plate 9 can be maintained.
- the pitch of the holes 33 is an integral multiple of the pitch of the openings 91a, and the holes 33 are designed to be disposed within the range of the openings 91a. Even if the mounting angle of the plate 9 is shifted by the reference pitch, the holes 33 are not disposed outside the range of the openings 91a.
- the one-way clutch 101 shown in FIG. 6 is also considered as an embodiment.
- the one-way clutch 101 has a cover plate 109 corresponding to the cover plate 9 and an outer shaft 103 corresponding to the outer shaft 3.
- the cover plate 109 can be attached to the outer shaft 103 only in the state shown in FIG.
- the cover plate 109 has five support portions 93 and a support portion 193 for positioning.
- the five support portions 93 and the support portions 193 are arranged at an equal pitch (reference pitch) in the rotation direction.
- the positioning support portion 193 has a first portion 94, a second portion 95, a third portion 97, and a fourth portion 96, similar to the above-described support portion 93, but further includes a positioning portion 198. Yes.
- the positioning portion 198 is a portion protruding from the radially outer end of the first portion 94 and is curved in the R1 direction.
- An opening 191 a is formed at a position corresponding to the support portion 193 of the plate body 91. Since the support part 193 has the positioning part 198, the area of the opening 191a is larger than the area of the opening 91a.
- the recess 139 is disposed adjacent to one of the six protrusions 32.
- the concave portion 139 is disposed on the R1 side of the protruding portion 32 at the boundary portion between the main body portion 31 and the protruding portion 32, and is recessed outward in the radial direction.
- the cover plate 109 has four holes 199 arranged at an equal pitch in the rotation direction. These holes 199 are arranged at positions corresponding to the four holes 133 for bolts of the outer shaft 103.
- the four holes 133 of the outer shaft 103 are arranged at an equal pitch in the rotation direction.
- the five openings 91a and the openings 191a are arranged at an equal pitch in the rotation direction.
- the cover plate 109 can be attached to the outer shaft 103 only in the state shown in FIG. 6 by the positioning portion 198 and the concave portion 139. Therefore, when the pitch of the holes 133 is not an integral multiple of the reference pitch Even so, it is possible to prevent the cover plate 109 from being attached to the outer shaft 103 when the hole 133 and the hole 199 are displaced.
- the one-way clutch 201 shown in FIGS. 9 and 10 includes an outer shaft 203 corresponding to the outer shaft 3 and a cover plate 209 corresponding to the cover plate 9.
- the aforementioned reference pitch is 45 degrees (hereinafter referred to as a second reference pitch).
- the outer shaft 203 has eight inclined surfaces 203 a (corresponding to the inclined surface 31 a) that abut against the eight rollers 6 and six holes 233.
- the inclined surfaces 203a are arranged at an equal pitch (second reference pitch) in the rotation direction.
- the holes 233 are arranged at an equal pitch (a pitch different from the second reference pitch, 60 ° pitch) in the rotation direction.
- the cover plate 209 has a plate main body 291 corresponding to the plate main body 91 and eight support portions 293 corresponding to the support portions 93.
- the support portion 293 is formed by being bent from the plate body 291 in a pressing direction (a direction parallel to the axis C).
- the support portion 293 includes a support portion main body 294 (an example of a first portion) and a restriction portion 296 (an example of a fourth portion).
- the support portion main body 294 is a portion that supports the second end portion 72 of the accordion spring 7 in the pressing direction, and is disposed between the second end portion 72 and the outer shaft 203. More specifically, the radially outer portion of the support body 294 is in contact with the inner peripheral surface of the outer shaft 203. It can be said that the support body 294 is sandwiched between the second end 72 of the accordion spring 7 and the outer shaft 203. Even if the support main body 294 is elastically deformed in the R2 direction by the elastic force of the accordion spring 7, the support main body 294 is supported by the outer shaft 203, so that the elastic deformation of the support main body 294 is suppressed.
- the restricting portion 296 is a portion that protrudes radially inward from the support portion main body 294, and is curved in the R1 direction.
- the restricting portion 296 enters the inner side in the radial direction of the second end portion 72 and can abut against the second end portion 72 in the radial direction.
- An opening 291a is formed on the opposite side of the support portion 293 from the accordion spring 7.
- the restricting portion 296 is disposed at a position where it can come into contact with the roller 6 on the R2 side.
- this one-way clutch 201 since the unevenness of the inner peripheral portion is further reduced as compared with the outer shaft 3 and the outer shaft 103, the processing cost of the outer shaft 203 can be further reduced. The manufacturing cost of 201 can be reduced.
- the pitch of the rollers 6 can be reduced and the number of rollers 6 can be increased. That is, the power transmission capacity of the one-way clutch 201 can be increased.
- the roller 6 is brought into contact with and supported by the restricting portion 296 by the pressing force of the accordion spring 7, so that the roller inward in the radial direction even without the shaft member 2. 6 does not fall off. That is, the assembly property of the one-way clutch 201 can be improved.
- the elastic member is not limited to the accordion spring 7.
- a coil spring or the like may be used as the elastic member.
- the support portion 93 includes the second portion 95, the third portion 97, and the fourth portion 96, but this is a case where the support portion 93 includes only the first portion 94.
- the reference pitch and the second reference pitch described above are not limited to 60 degrees and 45 degrees, and may be other pitches.
- the present invention is useful in the field of one-way clutches.
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- Mechanical Operated Clutches (AREA)
Abstract
Description
<一方向クラッチの全体構成>
図1~図5を用いて、一方向クラッチ1の構成について説明する。図1は一方向クラッチ1の平面概略図である。図2は一方向クラッチ1の部分拡大図である。図1および図2において、矢印R1が軸部材2の回転方向を示しており、矢印R2がその反対方向を示している。図1の点Oは軸部材2の回転軸を示している。図3はカバープレート9の部分拡大図である。図4は支持部93の斜視図である。図5は図3のV-V断面図である。
外軸3は、軸部材2の半径方向外側に配置されており、他の部材(図示せず)が固定されている。外軸3は、軸部材2の外周側に配置された概ね環状の本体部31と、本体部31から半径方向内側へ突出する複数の突出部32と、を有している。本実施形態では、6つの突出部32が回転方向に等ピッチ(60度ピッチ)で配置されている。以下、このピッチを基準ピッチという。
ローラ6をR1方向へ押圧するために、一方向クラッチ1には複数のアコーディオンばね7が設けられている。アコーディオンばね7は、板状のバネ材が折り曲げられて形成されている。アコーディオンばね7は、R1側に配置された第1端部71と、R2側に配置された第2端部72と、を有している。第1端部71はローラ6と当接しており、第2端部72はカバープレート9の支持部93(後述)と当接している。アコーディオンばね7は予め圧縮された状態でローラ6および支持部93の間に配置されている。
軸部材2および外軸3の間からローラ6が脱落しないように、外軸3の軸方向側方にはカバープレート9が配置されている。具体的には図1~図5に示すように、カバープレート9は、円板状のプレート本体91と、複数の支持部93と、を有している。本実施形態では、6つの支持部93が回転方向に等ピッチ(基準ピッチ)で配置されている。
図1および図2を用いて、一方向クラッチ1の動作について説明する。
以上に説明した一方向クラッチ1の特徴を以下にまとめる。
この一方向クラッチ1では、アコーディオンばね7の第2端部72を押圧方向(軸線Cに平行な方向)に支持する支持部93をカバープレート9が有しているため、外軸3だけでなくカバープレート9によりアコーディオンばね7の第2端部72を支持することができる。このため、従来よりも外軸3の内周部の凹凸を小さくしても、アコーディオンばね7の第2端部72を支持することができる。これにより、外軸3の加工コストを低減することができ、一方向クラッチ1の製造コストを低減することができる。
この一方向クラッチ1では、第1部分94が外軸3により押圧方向に支持されている。より詳細には、第2端部72と突出部32との間に第1部分94が挟み込まれている。このため、第1部分94がアコーディオンばね7の第2端部72から受ける力をカバープレート9および外軸3に分配することができ、支持部93を簡素な構成にすることができる。
プレート本体91に固定された第2部分95が第1部分94からアコーディオンばね7と反対側に延びているため、第1部分94だけの場合に比べて支持部93の強度を高めることができる。
一方向クラッチ1が軸部材2に取り付けられる前の状態では、アコーディオンばね7の押圧力によりローラ6の位置がR1方向にずれるため、ローラ6が突出部32と当接するようになる(図2の破線で示すローラ6参照)。
支持部93が第4部分96を有しているため、アコーディオンばね7の第2端部72の半径方向内側への移動を規制することができる。これにより、アコーディオンばね7が支持部93から脱落するのを防止できる。
外軸3の孔33が、軸方向から見た場合に開口91aの範囲内に配置されているため、外軸3の孔33に対応する孔をプレート本体91に設ける必要がない。
支持部93が半径方向内側に折り曲げられ形成されているため、開口91aは支持部93の半径方向外側に配置される。支持部93は突出部32の半径方向内側に配置されているため、軸方向から見た場合に開口91aが突出部32と重なり合う位置に配置される。
支持部93を形成するために開口91aを設けることで、プレート本体91の内周部を切り欠くことなく環状に保つことができる。これにより、支持部93を形成してもカバープレート9の強度を保つことができる。
ここで、第2実施形態について説明する。なお、前述の実施形態の構成と実質的に同じ機能を有する構成については、同じ符号を付し、その詳細な説明は省略する。
外軸3が突出部32を有していない場合も考えられる。具体的には、図9および図10に示す一方向クラッチ201は、外軸3に相当する外軸203と、カバープレート9に相当するカバープレート209と、を有している。この一方向クラッチ201では、前述の基準ピッチが45度ピッチ(以下、第2基準ピッチという)となっている。
本発明の具体的構成は、前述の実施形態に限定されず、本発明の趣旨を逸脱しない範囲において種々の変更および修正が可能である。
弾性部材はアコーディオンばね7に限定されない。例えば、コイルばねなどを弾性部材として用いてもよい。
前述の第1実施形態では、支持部93が第2部分95、第3部分97および第4部分96を有しているが、支持部93が第1部分94のみを有している場合であっても、アコーディオンばね7の第2端部72を支持することは可能である。また、支持部93が第1部分94および第2部分95のみを有している場合であっても、支持部93が第2端部72を支持することは可能である。さらに、支持部93が第1部分94、第2部分95および第4部分96のみを有している場合であっても、支持部93が第2端部72を支持することは可能である。
前述の基準ピッチおよび第2基準ピッチは、60度および45度に限定されず、他のピッチであってもよい。
2 軸部材
3、103、203 外軸
31 本体部
32 突出部
139 凹部
6 ローラ
7 アコーディオンばね(弾性部材の一例)
71 第1端部
72 第2端部
9、109、209 カバープレート(プレート部材の一例)
91 プレート本体
92 筒状部
93 支持部
94 第1部分
95 第2部分
96 第4部分
97 第3部分
198 位置決め部
Claims (12)
- 軸部材に設けられた一方向クラッチであって、
前記軸部材の半径方向外側に配置された外軸と、
前記軸部材と前記外軸との前記半径方向間に配置されたローラと、
前記軸部材と前記外軸との前記半径方向間に配置され前記ローラに対して押圧力を付与する弾性部材と、
前記外軸に装着されたプレート本体と、前記プレート本体から軸方向に突出し前記弾性部材が前記ローラを押し付ける押圧方向に前記弾性部材の端部を支持する支持部と、を有するプレート部材と、
を備えた一方向クラッチ。 - 前記支持部は、前記弾性部材の端部と前記押圧方向に当接し前記弾性部材の端部と前記外軸との間に配置された第1部分を有している、
請求項1に記載の一方向クラッチ。 - 前記外軸は、環状の本体部と、前記本体部から前記半径方向内側に突出する突出部と、を有しており、
前記第1部分は、前記弾性部材の端部と前記突出部との間に挟み込まれている、
請求項2に記載の一方向クラッチ。 - 前記第1部分は、前記突出部よりも前記半径方向内側に突出している、
請求項2または3に記載の一方向クラッチ。 - 前記支持部は、前記プレート本体に固定され前記第1部分から前記弾性部材と反対側に延びる第2部分をさらに有している、
請求項2から4のいずれかに記載の一方向クラッチ。 - 前記第2部分は、前記第1部分の前記半径方向内側の端部に連結されている、
請求項5に記載の一方向クラッチ。 - 前記第2部分は、前記突出部の前記半径方向内側に隙間を介して配置されている、
請求項5または6に記載の一方向クラッチ。 - 前記支持部は、前記第2部分の前記第1部分と反対側の端部から前記半径方向内側に延び前記ローラとは別のローラと当接可能な第3部分をさらに有している、
請求項5から7のいずれかに記載の一方向クラッチ。 - 前記支持部は、前記弾性部材の端部の前記半径方向内側への移動を規制する第4部分をさらに有している、
請求項2から8のいずれかに記載の一方向クラッチ。 - 前記プレート本体は、前記支持部の前記半径方向外側に配置された開口を有している、
請求項1から9のいずれかに記載の一方向クラッチ。 - 前記外軸は、軸方向から見た場合に前記開口と重なり合う位置に配置された孔を有している、
請求項10に記載の一方向クラッチ。 - 前記支持部は、前記プレート部材と前記外軸との相対回転を規制する位置決め部をさらに有しており、
前記外軸の前記本体部は、前記突出部に隣接して配置され前記半径方向外側に向かって窪んだ凹部を有しており、
前記位置決め部は、前記第1部分から前記半径方向外側に突出し前記凹部に嵌め込まれている、
請求項2から11のいずれかに記載の一方向クラッチ。
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JP2008312836A JP4659086B2 (ja) | 2008-12-09 | 2008-12-09 | 一方向クラッチ |
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CN102465811B (zh) * | 2010-11-02 | 2016-04-20 | 德昌电机(深圳)有限公司 | 起动电机装置及单向离合器 |
CN107091031B (zh) * | 2017-06-19 | 2018-12-11 | 宁波中车时代传感技术有限公司 | 一种用于车辆门***的全程有源锁闭装置 |
CN113983086A (zh) * | 2021-11-22 | 2022-01-28 | 人本股份有限公司 | 自行车单向轴承 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS4310087Y1 (ja) * | 1965-01-16 | 1968-05-02 | ||
JPS4833950U (ja) * | 1971-09-02 | 1973-04-24 | ||
JPS56157435U (ja) * | 1980-04-23 | 1981-11-24 | ||
JP2004308888A (ja) * | 2003-02-18 | 2004-11-04 | Nsk Warner Kk | ワンウェイクラッチ装置およびその製造方法 |
JP2004346951A (ja) * | 2003-05-20 | 2004-12-09 | Toyoda Mach Works Ltd | ワンウェイクラッチ |
WO2008099511A1 (ja) * | 2007-02-15 | 2008-08-21 | Nsk-Warner K.K. | ローラ型ワンウェイクラッチ |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP4260401B2 (ja) * | 2002-01-24 | 2009-04-30 | 本田技研工業株式会社 | 一方向クラッチ |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4310087Y1 (ja) * | 1965-01-16 | 1968-05-02 | ||
JPS4833950U (ja) * | 1971-09-02 | 1973-04-24 | ||
JPS56157435U (ja) * | 1980-04-23 | 1981-11-24 | ||
JP2004308888A (ja) * | 2003-02-18 | 2004-11-04 | Nsk Warner Kk | ワンウェイクラッチ装置およびその製造方法 |
JP2004346951A (ja) * | 2003-05-20 | 2004-12-09 | Toyoda Mach Works Ltd | ワンウェイクラッチ |
WO2008099511A1 (ja) * | 2007-02-15 | 2008-08-21 | Nsk-Warner K.K. | ローラ型ワンウェイクラッチ |
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CN102227574A (zh) | 2011-10-26 |
JP4659086B2 (ja) | 2011-03-30 |
JP2010138923A (ja) | 2010-06-24 |
CN102227574B (zh) | 2014-05-28 |
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