JP2011202756A - One way clutch and method of reusing the same - Google Patents
One way clutch and method of reusing the same Download PDFInfo
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- JP2011202756A JP2011202756A JP2010071624A JP2010071624A JP2011202756A JP 2011202756 A JP2011202756 A JP 2011202756A JP 2010071624 A JP2010071624 A JP 2010071624A JP 2010071624 A JP2010071624 A JP 2010071624A JP 2011202756 A JP2011202756 A JP 2011202756A
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- outer ring
- way clutch
- cage
- torque transmission
- retainer
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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
- F16D41/067—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 and the members being distributed by a separate cage encircling the axis of rotation
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
この発明は、例えば、事務機器の駆動部等に使用される一方向クラッチおよびそのリユース方法に関し、特に、一方向クラッチの再利用を行うための技術に関する。 The present invention relates to a one-way clutch used in, for example, a drive unit of office equipment and a reuse method thereof, and more particularly to a technique for reusing a one-way clutch.
この種の一方向クラッチは、一般的に、内周面の円周方向複数箇所にカム面を有する外輪と、各カム面と軸との間に介在する複数の係合子と、これらの係合子を保持する保持器と、各係合子をカム面に向かって付勢するばね部材とで構成されている(例えば、特許文献1,2)。前記係合子にはころが用いられる。 This type of one-way clutch generally includes an outer ring having cam surfaces at a plurality of locations in the circumferential direction of the inner peripheral surface, a plurality of engagement elements interposed between the cam surfaces and the shaft, and these engagement elements. And a spring member that biases each engagement element toward the cam surface (for example, Patent Documents 1 and 2). A roller is used for the engagement element.
事務機器などにおける樹脂部品に組み込んで使用される一方向クラッチには、その構成部品である外輪の材質として、成形し易い鉄系焼結金属の熱処理品を使用したものがある。このような一方向クラッチでは、内部に組み込まれるころに比べて外輪の方が硬度が低く強度的にも弱い。そのため、一定期間以上使用すると、ころやばね部材に異常が無くても外輪に摩耗などの劣化が生じてしまい、その時点で外輪を含む全ての構成部品を廃棄しているのが現状である。
このため、異常のない構成部品である、ころ、ばね部材、保持器等を再利用することを考えた。しかし、再利用しようとしても、分解が容易でなく、分解できたとしてもころやばね部材がばらばらになってしまう。このため、再利用のための作業効率が非常に悪く、異常のない構成部品の再利用は未だ実施されていない。
One-way clutches that are used by being incorporated in resin parts in office equipment or the like include those that use heat-treated iron-based sintered metal that is easy to form as the material of the outer ring that is a constituent part thereof. In such a one-way clutch, the outer ring has lower hardness and lower strength than the roller incorporated inside. For this reason, if the roller or spring member is used for a certain period or more, even if there is no abnormality in the roller or the spring member, the outer ring is deteriorated such as wear, and at that time, all components including the outer ring are discarded.
For this reason, it was considered to reuse rollers, spring members, cages, and the like, which are component parts having no abnormality. However, even if it is to be reused, it is not easy to disassemble, and even if it can be disassembled, the rollers and spring members will be separated. For this reason, the work efficiency for reuse is very bad, and the reuse of the component without an abnormality has not been carried out yet.
この発明の目的は、外輪の劣化時に、他の構成部品を容易に再利用できる一方向クラッチおよびそのリユース方法を提供することである。 An object of the present invention is to provide a one-way clutch and a reuse method thereof in which other components can be easily reused when an outer ring is deteriorated.
この発明の一方向クラッチは、内周面の円周方向複数箇所にカム面を有し軸の外周に配置される外輪と、この外輪の前記各カム面と前記軸との間に介在する複数の係合子と、これら複数の係合子を保持する保持器と、この保持器に支持されて前記各係合子に前記カム面に向かって前記円周方向へ弾性による力を付与するばね部材とを備え、前記各カム面が、前記軸に対する外輪の一方向の相対回転では前記係合子が係合して外輪の相対回転を阻止し、他方向の相対回転では前記係合子が非係合状態になって回転を許容する楔面を構成する一方向クラッチにおいて、前記保持器に前記複数の係合子およびばね部材を互いに分離不能に組み込んで保持器ユニットとし、この保持器ユニットを前記外輪に軸方向に挿脱可能に組み込んでなることを特徴とする。 The one-way clutch according to the present invention includes an outer ring having cam surfaces at a plurality of locations in the circumferential direction on the inner peripheral surface and disposed on the outer periphery of the shaft, and a plurality of intermediate wheels interposed between the cam surfaces of the outer ring and the shaft. Engaging members, a retainer that holds the plurality of engaging members, and a spring member that is supported by the retainer and applies elastic force to each of the engaging members in the circumferential direction toward the cam surface. Each cam surface engages with the engagement element in one direction relative rotation of the outer ring with respect to the shaft and prevents relative rotation of the outer ring, and engages with the engagement element in the other direction relative rotation. In the one-way clutch that constitutes a wedge surface that allows rotation, the cage and the spring members are incorporated in the cage so as not to be separated from each other to form a cage unit, and the cage unit is axially attached to the outer ring. It is specially designed that it can be inserted and removed. To.
この構成によると、保持器に複数の係合子およびばね部材を互いに分離不能に組み込んで保持器ユニットとし、この保持器ユニットを外輪に軸方向に挿脱可能に組み込んだため、外輪に劣化が発生した場合、外輪から保持器ユニットを容易に分離できる。この分離した保持器ユニットを新規な外輪に組み込むことで、一方向クラッチのリユースが可能となる。このとき、係合子やばね部材は互いに分離不能に保持器に組み込まれているので、リユース時の洗浄や組立においても外れることがなく、作業性が向上し、組み込みも容易となる。 According to this configuration, a plurality of engagement elements and spring members are incorporated in the cage in a separable manner to form a cage unit, and this cage unit is incorporated in the outer ring so that it can be inserted and removed in the axial direction. In this case, the cage unit can be easily separated from the outer ring. By incorporating this separated cage unit into a new outer ring, the one-way clutch can be reused. At this time, since the engaging element and the spring member are incorporated in the retainer so as not to be separated from each other, they are not detached even during cleaning and assembly during reuse, so that workability is improved and incorporation is facilitated.
この発明において、前記外輪が、前記係合子の材質よりも硬度の低い材質からなるものとしても良い。この場合、係合子の摩耗よりも外輪の摩耗が先に生じる。摩耗の生じた外輪を新品に取り替えることにより、保持器ユニットを再利用して新規の一方向クラッチを構成することができる。 In the present invention, the outer ring may be made of a material whose hardness is lower than that of the engaging member. In this case, wear of the outer ring occurs before wear of the engagement element. By replacing the worn outer ring with a new one, a new one-way clutch can be constructed by reusing the cage unit.
この発明において、前記外輪はその一端に前記保持器ユニットの一端面を受けるフランジを有するものとしても良い。また、このフランジに、押し出し用治具の挿入が可能な保持器ユニット押し出し用窓を形成しても良い。
前記フランジがあると、外輪に対する保持器ユニットの軸方向の位置決めが行える。外輪にフランジがあっても、このフランジに設けられた押し出し用窓を利用して、治具で外輪から保持器ユニットを容易に押し出すことができる。
In the present invention, the outer ring may have a flange that receives one end surface of the retainer unit at one end thereof. Further, a cage unit pushing window into which the pushing jig can be inserted may be formed on the flange.
With the flange, the cage unit can be positioned in the axial direction with respect to the outer ring. Even if the outer ring has a flange, the cage unit can be easily pushed out from the outer ring with a jig by using an extrusion window provided on the flange.
外輪に前記フランジを設ける場合は、前記保持器は、外輪に挿脱する軸方向の向きを変更可能に形成されていても良い。
この構成の場合、ロック方向の互いに逆となる複数種類の一方向クラッチを製造する場合に、前記外輪はカム面の傾斜の向きが異なる2種類のものを製造し、外輪に対する保持器ユニットの挿入の向きを変えることにより共通の保持器ユニットで対応できる。そのため、ロック方向の違いに関係なく保持器ユニットの部品を統一することができ、部品統一による生産性の向上が図れる。
In the case where the flange is provided on the outer ring, the cage may be formed so as to be able to change the direction of the axial direction in which it is inserted into and removed from the outer ring.
In the case of this configuration, when manufacturing a plurality of types of one-way clutches whose locking directions are opposite to each other, the outer ring is manufactured with two types having different cam surface inclination directions, and the cage unit is inserted into the outer ring. It is possible to cope with a common cage unit by changing the direction of the. Therefore, the parts of the cage unit can be unified regardless of the locking direction, and productivity can be improved by unifying the parts.
この発明において、前記外輪に外嵌し一端に少なくとも外輪の一端面を受けるフランジを有する樹脂製トルク伝達輪を設け、前記フランジに、押し出し用治具の挿入可能なクラッチ押し出し用窓を形成しても良い。
前記樹脂製トルク伝達輪が設けられることにより、外輪の一方向クラッチ使用機器への組み付けが容易となる。樹脂製トルク伝達輪があっても、トルク伝達輪のフランジの押し出し用窓を利用することにより、治具でトルク伝達輪から一方向クラッチを容易に押し出すことができる。
In this invention, a resin torque transmission wheel having a flange that is fitted on the outer ring and receives at least one end surface of the outer ring is provided at one end, and a clutch push-out window into which a push-out jig can be inserted is formed on the flange. Also good.
By providing the resin torque transmission wheel, the outer ring can be easily assembled to the one-way clutch using device. Even if there is a resin torque transmission wheel, the one-way clutch can be easily pushed out from the torque transmission wheel with a jig by using the push-out window of the flange of the torque transmission wheel.
この発明において、前記外輪に外嵌し一端に少なくとも外輪の一端面を受けるフランジを有する樹脂製トルク伝達輪を設け、前記フランジの表面に外輪外周に沿う切り込み部を形成しても良い。
この構成の場合も、前記樹脂製トルク伝達輪が設けられることにより、外輪の一方向クラッチ使用機器への組み付けが容易となる。樹脂製トルク伝達輪があっても、この樹脂製トルク伝達輪の筒部に対して一方向クラッチを軸方向に相対的に押し出すことにより、トルク伝達輪の筒部からフランジを分離して、その分離されたフランジと共に一方向クラッチをトルク伝達輪から容易に引き抜くことができる。
この場合に、樹脂製トルク伝達輪のフランジの内径部を前記外輪の内周面に嵌合させても良い。このように、フランジの内径部を外輪の内周面に嵌合させると、作動時にフランジにラジアル荷重が負荷されても、フランジが切り込み部で破損するのを防止できる。
In the present invention, a resin torque transmission wheel having a flange that is fitted on the outer ring and receives at least one end surface of the outer ring may be provided at one end, and a cut portion along the outer periphery of the outer ring may be formed on the surface of the flange.
Also in this configuration, by providing the resin torque transmission wheel, the outer ring can be easily assembled to the one-way clutch using device. Even if there is a resin torque transmission wheel, the flange is separated from the cylinder portion of the torque transmission wheel by pushing the one-way clutch relative to the tube portion of the resin torque transmission wheel in the axial direction. The one-way clutch can be easily pulled out from the torque transmission wheel together with the separated flange.
In this case, the inner diameter portion of the flange of the resin torque transmission wheel may be fitted to the inner peripheral surface of the outer ring. As described above, when the inner diameter portion of the flange is fitted to the inner peripheral surface of the outer ring, even when a radial load is applied to the flange during operation, the flange can be prevented from being damaged at the cut portion.
この発明において、前記外輪の一端で内周部が内嵌して外輪に連結される樹脂製トルク伝達輪を設けても良い。
この構成の場合、トルク伝達輪がローラ等の被連結体に連結される軸方向に長い形状のものであっても、外輪に対して容易に連結・分離が可能となる。
In the present invention, a resin torque transmission wheel may be provided in which an inner peripheral portion is fitted into one end of the outer ring and connected to the outer ring.
In the case of this configuration, even if the torque transmission wheel has a shape that is long in the axial direction connected to a connected body such as a roller, it can be easily connected to and disconnected from the outer ring.
この発明において、前記係合子がころであり、前記保持器は、軸方向に互いに離れた一対のリング状の側板部と、両側板部間に渡って円周方向の複数箇所に設けられた柱部とでなり、隣合う柱部と両側の側板部とで囲まれる空間が、各係合子を収容するポケットとなる樹脂製のものであり、前記各ポケットの保持器外径側の開口縁に、両側の柱部からそれぞれ突出して前記係合子が外径側へ抜け出すことを阻止する抜け止め突部を設け、前記両側の抜け止め突部間の開口幅は、前記係合子の外径よりも狭いが、前記抜け止め突部は、保持器の外径側から前記係合子を押し込むことで、弾性変形して係合子のポケット内への挿入可能なものとしても良い。
このように保持器に弾性変形可能な抜け止め突部を設けた場合、保持器への係合子の組み込みは、保持器の外径側から各ポケットに係合子を押し込むことにより行う。このとき、抜け止め突部は保持器の材質である樹脂の持つ弾性により撓むなどの弾性変形をし、係合子のポケット内への通過を許すが、組み込んでしまうと、係合子は抜け止め突部に係合して抜け出すことが阻止される。そのため、保持器への係合子の組み込みが容易であり、またリユースのための外輪からの保持器ユニット取り出し時に、係合子が不測に抜け出すことがなく、リユースのための分解および再組立の作業が容易に行える。
In this invention, the engagement element is a roller, and the cage is provided with a pair of ring-shaped side plate portions that are separated from each other in the axial direction, and columns provided at a plurality of positions in the circumferential direction across both side plate portions. The space surrounded by the adjacent column part and the side plate parts on both sides is made of resin which becomes a pocket for accommodating each engagement element, and the opening edge on the outer diameter side of the cage of each pocket. A retaining protrusion that protrudes from the pillars on both sides to prevent the engaging element from coming out to the outer diameter side, and the opening width between the retaining protrusions on both sides is larger than the outer diameter of the engaging element. Although narrow, the retaining protrusion may be elastically deformed and inserted into the pocket of the engaging element by pushing the engaging element from the outer diameter side of the cage.
Thus, when the retainer protrusion which can be elastically deformed is provided in the retainer, the engagement element is incorporated into the retainer by pushing the engagement element into each pocket from the outer diameter side of the retainer. At this time, the retaining protrusion is elastically deformed by the elasticity of the resin that is the material of the cage and allows the passage of the engagement element into the pocket. It is prevented from engaging and coming out of the protrusion. Therefore, it is easy to incorporate the engaging element into the retainer, and when the retainer unit is taken out from the outer ring for reuse, the engaging element does not come out unexpectedly, and the disassembly and reassembly work for reuse can be performed. Easy to do.
前記保持器に前記抜け止め突部を設けた場合に、前記ポケットの両側に設けられる前記抜け止め突部のうち、いずれか片方または両方の抜け止め突部は、前記柱部の長さ方向に沿って延び、柱部長さ方向の一部が他の部分よりも次第に大きく突出した形状としても良い。抜け止め突部を上記のように一部の突出量が大きくなる形状とした場合、係合子の押し込み時の抜け止め突部の弾性変形が生じ易くなり、無理なく押し込むことができる。 When the retainer protrusion is provided on the cage, one or both of the retainer protrusions provided on both sides of the pocket are in the length direction of the column portion. It is good also as a shape which extended along and the one part of the pillar part length direction protruded gradually larger than the other part. When the retaining protrusion has a shape in which a part of the protrusion is large as described above, the retaining protrusion is easily elastically deformed when the engaging element is pushed in, and can be pushed in without difficulty.
この発明において、前記保持器ユニットが一方向クラッチとして使用されたことのあるリユース品であり、前記外輪が新品であっても良い。この場合、保持器ユニットを再利用して外輪を新品に交換しただけでありながら、正常な機能,品質が確保される新たな一方向クラッチとなる。
この場合に、前記リユース品の保持器ユニットにおける保持器、および前記外輪に、保持器ユニットの再利用の事実または回数を示すリユース情報のマーク部を設けても良い。このようにリユース情報のマーク部を設けることによって、保持器ユニットがリユース品であるかどうかを容易に判断できる。
In this invention, the retainer unit may be a reuse product that has been used as a one-way clutch, and the outer ring may be new. In this case, it becomes a new one-way clutch in which normal function and quality are ensured while the outer ring is simply replaced with a new one by reusing the cage unit.
In this case, a reuse information mark portion indicating the fact or frequency of reuse of the cage unit may be provided in the cage in the cage unit of the reuse product and the outer ring. By providing the reuse information mark portion in this way, it is possible to easily determine whether the cage unit is a reuse product.
この発明の一方向クラッチのリユース方法は、この発明の上記いずれかの構成の一方向クラッチであって、かつ前記外輪に外嵌した樹脂製トルク伝達輪を設けた一方向クラッチを再利用する一方向クラッチのリユース方法であって、一方向クラッチを回収する過程、樹脂製トルク伝達輪から外輪を抜き取る過程、外輪から保持器ユニットを引き抜く過程、保持器ユニットを洗浄し乾燥させる過程、この洗浄・乾燥した保持器ユニットを新規な外輪に組み込む過程、およびこの外輪に保持器ユニットを組み込んだ組立品を樹脂製トルク伝達輪に組み込む過程を含む。 The method of reusing a one-way clutch according to the present invention is a one-way clutch having any one of the above-described configurations according to the present invention, wherein the one-way clutch provided with a resin torque transmission wheel fitted on the outer ring is reused. This is a method of reusing a directional clutch, the process of recovering the one-way clutch, the process of extracting the outer ring from the resin torque transmission wheel, the process of pulling out the cage unit from the outer ring, the process of cleaning and drying the cage unit, A process of incorporating the dried cage unit into a new outer ring and a process of incorporating an assembly incorporating the cage unit into the outer ring into a resin torque transmission wheel are included.
この方法によると、回収した一方向クラッチの使用後品を、樹脂製トルク伝達輪と外輪を含む他の構成部品とに分離するので、ここで外輪の劣化の有無を判断できる。外輪に劣化がなければそのまま再利用できるが、外輪に劣化があれば、外輪から保持器ユニットを引き抜いて、これを洗浄・乾燥して新規な外輪に組み込み、この組立品を樹脂製トルク伝達輪に組み込んで新たな一方向クラッチとするので、保持器ユニットを容易にリユースすることができる。 According to this method, since the recovered used one-way clutch is separated into the resin torque transmission wheel and other components including the outer ring, it can be determined here whether the outer ring has deteriorated. If the outer ring is not deteriorated, it can be reused as it is. However, if the outer ring is deteriorated, the cage unit is pulled out from the outer ring, washed and dried, and then assembled into a new outer ring. The cage unit is a new one-way clutch so that the cage unit can be easily reused.
この発明の一方向クラッチは、内周面の円周方向複数箇所にカム面を有し軸の外周に配置される外輪と、この外輪の前記各カム面と前記軸との間に介在する複数の係合子と、これら複数の係合子を保持する保持器と、この保持器に支持されて前記各係合子に前記カム面に向かって前記円周方向へ弾性による力を付与するばね部材とを備え、前記各カム面が、前記軸に対する外輪の一方向の相対回転では前記係合子が係合して外輪の相対回転を阻止し、他方向の相対回転では前記係合子が非係合状態になって回転を許容する楔面を構成する一方向クラッチにおいて、前記保持器に前記複数の係合子およびばね部材を互いに分離不能に組み込んで保持器ユニットとし、この保持器ユニットを前記外輪に軸方向に挿脱可能に組み込んでなるので、外輪の劣化時に、他の構成部品を容易に再利用することができる。 The one-way clutch according to the present invention includes an outer ring having cam surfaces at a plurality of locations in the circumferential direction on the inner peripheral surface and disposed on the outer periphery of the shaft, and a plurality of intermediate wheels interposed between the cam surfaces of the outer ring and the shaft. Engaging members, a retainer that holds the plurality of engaging members, and a spring member that is supported by the retainer and applies elastic force to each of the engaging members in the circumferential direction toward the cam surface. Each cam surface engages with the engagement element in one direction relative rotation of the outer ring with respect to the shaft and prevents relative rotation of the outer ring, and engages with the engagement element in the other direction relative rotation. In the one-way clutch that constitutes a wedge surface that allows rotation, the cage and the spring members are incorporated in the cage so as not to be separated from each other to form a cage unit, and the cage unit is axially attached to the outer ring. So that it can be inserted and removed. During degradation, other components can be easily reused.
この発明の一方向クラッチのリユース方法は、この発明の一方向クラッチを再利用する方法であって、一方向クラッチを回収する過程、樹脂製トルク伝達輪から外輪を抜き取る過程、外輪から保持器ユニットを引き抜く過程、保持器ユニットを洗浄し乾燥させる過程、この洗浄・乾燥した保持器ユニットを新規な外輪に組み込む過程、およびこの外輪に保持器ユニットを組み込んだ組立品を樹脂製トルク伝達輪に組み込む過程を含む方法であるため、劣化した外輪を新規な外輪に取り替えることで、保持器ユニットを容易にリユースすることができる。 The one-way clutch reuse method of the present invention is a method of reusing the one-way clutch of the present invention, a process of recovering the one-way clutch, a process of extracting the outer ring from the resin torque transmission wheel, and a cage unit from the outer ring. The process of pulling out, the process of cleaning and drying the cage unit, the process of incorporating this cleaned and dried cage unit into a new outer ring, and the assembly incorporating the cage unit into this outer ring is incorporated into the resin torque transmission wheel Since the method includes a process, the cage unit can be easily reused by replacing the deteriorated outer ring with a new outer ring.
この発明の一実施形態を図1ないし図9と共に説明する。この発明の実施形態に係る一方向クラッチは、例えば、複写機,プリンタ,ファクシミリ等の事務機器の駆動部に使用される。但し、事務機器用に必ずしも限定されるものではない。以下の説明は、一方向クラッチのリユース方法の説明をも含む。この一方向クラッチの使用時には、図9に示すように、一方向クラッチの嵌合孔に軸30が挿通される。 An embodiment of the present invention will be described with reference to FIGS. The one-way clutch according to the embodiment of the present invention is used, for example, in a drive unit of office equipment such as a copying machine, a printer, and a facsimile. However, it is not necessarily limited to office equipment. The following description also includes a description of a one-way clutch reuse method. When the one-way clutch is used, the shaft 30 is inserted into the fitting hole of the one-way clutch, as shown in FIG.
図1に示すように、一方向クラッチ1は、クラッチ本体2と、樹脂製のトルク伝達輪3とでなり、クラッチ本体2は、外輪4と、複数の係合子であるころ6と、ばね部材7と、保持器8と、蓋部材9とを備える。図8に示すように、外輪4は、内周面の円周方向複数箇所にカム面10を有し、図9に示すように軸30の外周に配置される。前記各カム面10は、軸30との間で所定の楔角δを成す楔面を構成し、これら各楔面と軸30との間に楔形空間を形成する。各ころ6は、ばね部材7の個々のばね片7aと共に、保持器8に設けられた円周方向複数箇所のポケットPt内に介在する。各ポケットPtは、外輪4の各カム面10と軸30との間の前記各楔形空間に位置する。各ころ6は、ばね片7aのばね力によりポケットPtの前記楔形空間の幅狭方向に付勢されている。前記保持器8は、複数のころ6を保持する。 As shown in FIG. 1, the one-way clutch 1 includes a clutch body 2 and a resin torque transmission wheel 3. The clutch body 2 includes an outer ring 4, rollers 6 as a plurality of engagement elements, and a spring member. 7, a cage 8, and a lid member 9. As shown in FIG. 8, the outer ring 4 has cam surfaces 10 at a plurality of locations in the circumferential direction of the inner peripheral surface, and is arranged on the outer periphery of the shaft 30 as shown in FIG. Each of the cam surfaces 10 forms a wedge surface that forms a predetermined wedge angle δ with the shaft 30, and forms a wedge-shaped space between each of the wedge surfaces and the shaft 30. Each roller 6 is interposed in a plurality of pockets Pt in the circumferential direction provided in the cage 8 together with the individual spring pieces 7 a of the spring member 7. Each pocket Pt is located in each wedge-shaped space between each cam surface 10 of the outer ring 4 and the shaft 30. Each roller 6 is urged in the narrow direction of the wedge-shaped space of the pocket Pt by the spring force of the spring piece 7a. The cage 8 holds a plurality of rollers 6.
この一方向クラッチ1は、図9に示すように、各カム面10において、軸30に対する外輪4の一方向(図9矢印A1方向)の相対回転では前記ころ6が係合して外輪4の相対回転を阻止する。つまり、ころ6がポケットPtの楔形空間幅狭方向に移動して係合状態となり、軸30に対する外輪4の相対回転を阻止し、これにより外輪4にトルク伝達を行う。他方向(図9矢印A2方向)の相対回転では前記ころ6が非係合状態になって外輪4の相対回転を許容する。つまり、ころ6がばね片7aのばね力に抗してポケットPtの楔形空間幅拡方向に移動して非係合状態となり、軸30に対する外輪4の相対回転を許容する。これにより、外輪4へのトルク伝達を遮断する。 As shown in FIG. 9, in the one-way clutch 1, the rollers 6 are engaged with each other in the relative rotation in one direction of the outer ring 4 with respect to the shaft 30 (direction of arrow A <b> 1 in FIG. 9) on each cam surface 10. Prevent relative rotation. That is, the roller 6 moves in the wedge-shaped space narrow direction of the pocket Pt to be in an engaged state, thereby preventing relative rotation of the outer ring 4 with respect to the shaft 30, thereby transmitting torque to the outer ring 4. In the relative rotation in the other direction (the direction of arrow A2 in FIG. 9), the roller 6 is disengaged and the relative rotation of the outer ring 4 is allowed. In other words, the roller 6 moves against the spring force of the spring piece 7 a in the wedge-shaped space widening direction of the pocket Pt to be in a disengaged state, and allows the outer ring 4 to rotate relative to the shaft 30. Thereby, the torque transmission to the outer ring 4 is interrupted.
外輪4の硬度は、係合子であるころ6の硬度よりも低く設定されている。例えば、外輪4の材質には、鉄系焼結金属が使用される。なお、潤滑のためには、外輪4の材質として、含油鉄系焼結金属を使用しても良いが、グリースで潤滑しても良い。図8のように、外輪4の一端には径方向内向きのフランジ11が設けられ、このフランジ11の内周が前記軸30の挿通孔とされている。フランジ11の内周面には、後述する保持器ユニット5を治具で外輪4内から軸方向に押し出すための窓となる複数の切り欠き部11aが、周方向に等配して設けられている。外輪4の内周面には、前記カム面10のほか、周方向に隣接する二つのカム面10,10の間に位置し、保持器8の外周面に嵌合して保持器8を周方向に変位不能に位置決めする複数の位置決め用溝12が周方向に等配して設けられている。これらの位置決め用溝12は断面円弧状とされ、軸方向に延びて形成されている。また、外輪4の外周面には、トルク伝達輪3の内周面に嵌合して周方向に変位不能に位置決めする複数の位置決め用溝13が周方向に等配して設けられている。これらの位置決め用溝13も断面円弧状とされ、軸方向に延びて形成されている。 The hardness of the outer ring 4 is set lower than the hardness of the roller 6 that is an engagement element. For example, iron-based sintered metal is used for the material of the outer ring 4. For lubrication, oil-impregnated iron-based sintered metal may be used as the material of the outer ring 4, but it may be lubricated with grease. As shown in FIG. 8, a radially inward flange 11 is provided at one end of the outer ring 4, and an inner periphery of the flange 11 serves as an insertion hole for the shaft 30. On the inner peripheral surface of the flange 11, a plurality of cutout portions 11 a serving as windows for pushing out a cage unit 5 (described later) from the outer ring 4 in the axial direction with a jig are provided with equal distribution in the circumferential direction. Yes. In addition to the cam surface 10, the outer ring 4 is positioned between two cam surfaces 10 and 10 adjacent to each other in the circumferential direction, and is fitted to the outer peripheral surface of the cage 8 to surround the cage 8. A plurality of positioning grooves 12 that are positioned so as not to be displaceable in the direction are provided in the circumferential direction. These positioning grooves 12 have a circular arc cross section and are formed to extend in the axial direction. A plurality of positioning grooves 13 are provided on the outer peripheral surface of the outer ring 4 so as to be fitted in the inner peripheral surface of the torque transmitting wheel 3 and positioned so as not to be displaceable in the circumferential direction. These positioning grooves 13 are also arc-shaped in cross section and are formed extending in the axial direction.
保持器8は、図5に示すように、軸30(図9)の外周に径方向隙間を介して装着される内径孔を有するリング状の側板部14と、複数の柱部15とでなる。複数の柱部15は、側板部14の片面に一体に固着され、各柱部15は側板部14の片面から軸方向に延びる。これら複数の柱部15は、周方向に所定の間隔を空けて配置され、隣合う柱部15と側板部14とで囲まれる空間により、前記ポケットPtが構成される。また、側板部14から各柱部15の一側部にわたって軸方向に貫通し前記ばね部材7の各ばね片7aを収容するばね片収容空間16が、前記ポケットPtに対応して複数設けられ、これらのばね片収容空間16は各ポケットPtの楔形空間幅拡側に位置する。保持器8の外周面は、外輪4の内周面に嵌合する断面形状とされている。すなわち、保持器8の外周面には、外輪4の内周面の位置決め用溝12に嵌合する複数の突条17が周方向に等配して設けられている。さらに各柱部15の先端には、加締用突部18が軸方向に延びて設けられている。 As shown in FIG. 5, the cage 8 includes a ring-shaped side plate portion 14 having an inner diameter hole attached to the outer periphery of the shaft 30 (FIG. 9) via a radial gap, and a plurality of column portions 15. . The plurality of column portions 15 are integrally fixed to one side of the side plate portion 14, and each column portion 15 extends in an axial direction from one side of the side plate portion 14. The plurality of pillar portions 15 are arranged at predetermined intervals in the circumferential direction, and the pocket Pt is constituted by a space surrounded by the adjacent pillar portions 15 and the side plate portions 14. A plurality of spring piece accommodation spaces 16 are provided corresponding to the pockets Pt, penetrating in the axial direction from the side plate portions 14 to one side portions of the column portions 15 and accommodating the spring pieces 7a of the spring member 7. These spring piece accommodation spaces 16 are located on the wedge-shaped space widening side of each pocket Pt. The outer peripheral surface of the cage 8 has a cross-sectional shape that fits into the inner peripheral surface of the outer ring 4. That is, on the outer peripheral surface of the cage 8, a plurality of ridges 17 that are fitted in the positioning grooves 12 on the inner peripheral surface of the outer ring 4 are provided equally in the circumferential direction. Further, a caulking protrusion 18 is provided at the tip of each column portion 15 so as to extend in the axial direction.
ばね部材7は、図6に示すように、一枚の金属板によって形成された環状部7bと、複数のばね片7aとを有する板ばねである。環状部7bは、軸30(図9)の外周に径方向隙間を介して装着される内径孔を有する。この環状部7bの外周縁部を周方向一定間隔おきに切り起こすことにより、複数のばね片7aが形成される。各ばね片7aの基端部は、環状部7bをなす面から略直角に屈曲して立ち上がり、各ばね片7aの先端部が自由端部となる。これら基端部と先端部との中間部を「く」の字形状に曲げ形成している。 As shown in FIG. 6, the spring member 7 is a leaf spring having an annular portion 7b formed of a single metal plate and a plurality of spring pieces 7a. The annular portion 7b has an inner diameter hole that is attached to the outer periphery of the shaft 30 (FIG. 9) via a radial clearance. A plurality of spring pieces 7a are formed by cutting and raising the outer peripheral edge of the annular portion 7b at regular intervals in the circumferential direction. The base end portion of each spring piece 7a rises by bending at a substantially right angle from the surface forming the annular portion 7b, and the distal end portion of each spring piece 7a becomes a free end portion. An intermediate portion between the base end portion and the tip end portion is bent into a “<” shape.
蓋部材9は、図7に示すように、軸30(図9)の外周に径方向隙間を介して装着される内径孔を有するリング状の板部材であり、外周面が外輪4の内周面に嵌合する形状とされている。すなわち、蓋部材9の外周面には、外輪4の内周面の位置決め用溝12に嵌合する複数の突部19が周方向に等配して設けられている。また、この蓋部材9には、周方向の複数箇所に前記保持器8の加締用突部18が係合する加締用孔9aが設けられ、この加締用孔9aに加締用突部18を係合させて加締めることで、保持器8の柱部15が突出する端部側に蓋部材9が固定される。 As shown in FIG. 7, the lid member 9 is a ring-shaped plate member having an inner diameter hole attached to the outer periphery of the shaft 30 (FIG. 9) via a radial gap, and the outer peripheral surface is the inner periphery of the outer ring 4. The shape is fitted to the surface. That is, on the outer peripheral surface of the lid member 9, a plurality of protrusions 19 that are fitted in the positioning grooves 12 on the inner peripheral surface of the outer ring 4 are provided equally in the circumferential direction. Further, the lid member 9 is provided with caulking holes 9a with which the caulking protrusions 18 of the retainer 8 are engaged at a plurality of locations in the circumferential direction, and the caulking protrusions 9a are engaged with the caulking protrusions 9a. The lid member 9 is fixed to the end portion side from which the column portion 15 of the retainer 8 protrudes by engaging the portion 18 and caulking.
図4に示すように、ばね部材7は、その各ばね片7aを、保持器8の側板部14側から各ばね片収容空間16に軸方向に向けて差し込むことで保持器8に組み込まれ、この組込み状態でばね部材7の環状部7bが保持器8の側板部14に当接する。ころ6は、保持器8の柱部15が突出する側から、ポケットPt内に軸方向に向けて差し込むことで、保持器8内に組み込まれる。隣り合う柱部15,15で囲まれる空間は、ころ6が内径側および外径側に脱落しない形状とされている。ころ6を組み込んだ後、保持器8の各柱部15の先端の加締用突部18に蓋部材9の加締用孔9aを係合させ、加締用突部18を加締めることで、保持器8の柱部15突出側の端部に蓋部材9が固定される。これにより、保持器8からころ6が軸方向に抜け出すのを阻止することができる。このように、保持器8にばね部材7および複数のころ6を互いに分離不能に組み込むことで、図3に示す保持器ユニット5が構成される。 As shown in FIG. 4, the spring member 7 is incorporated in the cage 8 by inserting each spring piece 7 a from the side plate portion 14 side of the cage 8 into each spring piece accommodating space 16 in the axial direction. In this assembled state, the annular portion 7 b of the spring member 7 contacts the side plate portion 14 of the cage 8. The roller 6 is incorporated into the cage 8 by being inserted into the pocket Pt in the axial direction from the side from which the column portion 15 of the cage 8 protrudes. The space surrounded by the adjacent column portions 15 and 15 is shaped such that the rollers 6 do not fall off to the inner diameter side and the outer diameter side. After the roller 6 is assembled, the caulking hole 9a of the lid member 9 is engaged with the caulking protrusion 18 at the tip of each column part 15 of the cage 8, and the caulking protrusion 18 is caulked. The lid member 9 is fixed to the end portion of the cage 8 on the protruding side of the column portion 15. Thereby, it is possible to prevent the rollers 6 from coming out of the cage 8 in the axial direction. In this way, the cage member 5 shown in FIG. 3 is configured by incorporating the spring member 7 and the plurality of rollers 6 into the cage 8 so as not to be separated from each other.
この保持器ユニット5を、そのばね部材7の環状部7bが位置する一端部側から、図4のように外輪4内に軸方向に挿入して外輪4の内周面に嵌合させ、外輪4のフランジ11で保持器ユニット5の一端面を受け止める。これにより、外輪4と保持器ユニット5とで、図2に示すクラッチ本体2が構成される。なお、このクラッチ本体2だけで、一方向クラッチ1の完成品として取り扱っても良い。保持器ユニット5は、外輪4に対して軸方向の向きを逆にしても挿入可能とする。 The retainer unit 5 is inserted axially into the outer ring 4 as shown in FIG. 4 from one end where the annular portion 7b of the spring member 7 is located, and is fitted to the inner peripheral surface of the outer ring 4, so that the outer ring The end face of the cage unit 5 is received by the flange 11 of 4. Thus, the outer ring 4 and the cage unit 5 constitute the clutch body 2 shown in FIG. Note that the clutch body 2 alone may be handled as a finished product of the one-way clutch 1. The cage unit 5 can be inserted even if the axial direction is reversed with respect to the outer ring 4.
樹脂製トルク伝達輪3は、図1に示すように、外輪4に嵌め合い状態に連結されて外輪4と一体に相対回転する部材であり、ここでは外輪4の外周面に嵌合して外輪4全体を被覆するケーシングとしても機能する。トルク伝達輪3の一端には径方向内向きのフランジ20が設けられる。クラッチ本体2は、その蓋部材9が位置する端部側を先頭にして、トルク伝達輪3のフランジ20が設けられない開放端側からトルク伝達輪3内に挿入嵌合される。トルク伝達輪3の内周面には、外輪4の外周面の位置決め用溝13に嵌合する複数の突条21が周方向に等配して設けられている。これにより、クラッチ本体2はトルク伝達輪3の内周面に挿脱可能に組み込まれ、周方向に変位不能とされる。この組み込み状態で、クラッチ本体2における外輪4の一端面および蓋部材9がトルク伝達輪3のフランジ20で受け止められる。トルク伝達輪3のフランジ20の内周は、軸30(図9)の外周に径方向隙間を介して装着される内径孔とされ、この内径孔の周縁には、クラッチ本体2を治具でトルク伝達輪3内から軸方向に押し出すための複数の切り欠き部20aがクラッチ押し出し用窓として設けられている。 As shown in FIG. 1, the resin torque transmission wheel 3 is a member that is connected to the outer ring 4 and is connected to the outer ring 4 to rotate integrally with the outer ring 4. Here, the resin torque transmission wheel 3 is fitted to the outer peripheral surface of the outer ring 4. It also functions as a casing that covers the entire 4. One end of the torque transmission wheel 3 is provided with a radially inward flange 20. The clutch body 2 is inserted and fitted into the torque transmission wheel 3 from the open end side where the flange 20 of the torque transmission wheel 3 is not provided, with the end side where the lid member 9 is located at the head. On the inner peripheral surface of the torque transmission wheel 3, a plurality of protrusions 21 that are fitted in the positioning grooves 13 on the outer peripheral surface of the outer ring 4 are provided in the circumferential direction. Thereby, the clutch main body 2 is incorporated in the inner peripheral surface of the torque transmission wheel 3 so as to be insertable / removable and cannot be displaced in the circumferential direction. In this assembled state, one end surface of the outer ring 4 and the lid member 9 in the clutch body 2 are received by the flange 20 of the torque transmission wheel 3. The inner periphery of the flange 20 of the torque transmission wheel 3 is an inner diameter hole that is attached to the outer periphery of the shaft 30 (FIG. 9) via a radial gap, and the clutch body 2 is attached to the periphery of the inner diameter hole with a jig. A plurality of notches 20a for pushing out from the torque transmission wheel 3 in the axial direction are provided as clutch pushing windows.
この一方向クラッチ1のリユース方法について説明する。
新品の一方向クラッチ1を装置に組み込み、この装置を例えば所定期間稼動させた後、軸30および樹脂製トルク伝達輪3から離脱したクラッチ本体2の使用後品を回収する。このとき、トルク伝達輪3のフランジ20の切り欠き部20aをクラッチ押し出し用窓として用いることにより、治具を使用してトルク伝達輪3内からクラッチ本体2を軸方向に容易に押し出すことができる。トルク伝達輪3からクラッチ本体2を離脱させると、外輪4が露出するので、外輪4の摩耗等の耐久劣化を判断することができる。上述したように外輪4の材質は係合子となるころ6よりも硬度を低く設定されているので、外輪4に耐久劣化があっても、ほとんどの場合、保持器ユニット5は再利用可能である。
さらに、回収したクラッチ本体2の外輪4から、保持器ユニット5を引き抜く。このとき、外輪4のフランジ11の切り欠き部11aを保持器ユニット5の押し出し用窓として用いることにより、治具を使用して外輪4内から保持器ユニット5を容易に軸方向に押し出すことができる。
次に、保持器ユニット5を構成部品毎に分解することなく洗浄、脱脂、乾燥を行う。次に、この洗浄・乾燥した再利用品である保持器ユニット5を、新規な外輪4に組み込む。このとき、再利用品である保持器ユニット5、および新規な外輪4の例えば外周面に、保持器ユニット5の再利用の事実または回数を示すリユース情報のマーク部40を施す。マーク部40は、文字、記号、着色部分等からなり、例えば刻印、ペンシルグラインダー等を用いて凹凸形状に施す。マーク部40は、別に設けた対比表等の対比情報(図示せず)と対比することで、再利用の事実または回数が判別されるものであっても良い。
次に、このように再利用の保持器ユニット5を外輪4に組み込んでなるクラッチ本体2を樹脂製トルク伝達輪3に組み込み、一方向クラッチ1を再生させる。この一方向クラッチ1の再生品を検査して出荷する。再生した一方向クラッチ1の出荷検査として、軸30に前記一方向クラッチ1を組み込み、軸30に対する外輪4の一方向の相対回転で外輪4の相対回転を阻止(ロック)するか否かを確認する。また、軸30に対する外輪4の他方向の相対回転で回転を許容(空転)するか否か、および空転トルクのレベルを確認する。このようにロックおよび空転確認を行った後、一方向クラッチ1をユーザ等に出荷する。
A method for reusing the one-way clutch 1 will be described.
A new one-way clutch 1 is incorporated in the device, and after the device has been operated for a predetermined period, for example, the used product of the clutch body 2 detached from the shaft 30 and the resin torque transmission wheel 3 is collected. At this time, by using the notch portion 20a of the flange 20 of the torque transmission wheel 3 as a clutch push-out window, the clutch body 2 can be easily pushed out from the torque transmission wheel 3 in the axial direction using a jig. . When the clutch main body 2 is detached from the torque transmission wheel 3, the outer ring 4 is exposed, so that it is possible to determine durability deterioration such as wear of the outer ring 4. As described above, since the material of the outer ring 4 is set to be lower in hardness than the rollers 6 that serve as the engagement elements, the retainer unit 5 can be reused in most cases even if the outer ring 4 is deteriorated in durability. .
Further, the cage unit 5 is pulled out from the recovered outer ring 4 of the clutch body 2. At this time, by using the notch 11a of the flange 11 of the outer ring 4 as a push-out window for the cage unit 5, the cage unit 5 can be easily pushed out from the outer ring 4 in the axial direction using a jig. it can.
Next, cleaning, degreasing, and drying are performed without disassembling the cage unit 5 for each component. Next, the cage unit 5, which is a reused product that has been washed and dried, is incorporated into the new outer ring 4. At this time, a reuse information mark portion 40 indicating the fact or number of reuse of the cage unit 5 is applied to, for example, the outer peripheral surface of the cage unit 5 that is a reused product and the new outer ring 4. The mark part 40 consists of a character, a symbol, a colored part, etc., for example, is given to uneven | corrugated shape using a stamp, a pencil grinder, etc. The mark unit 40 may be configured to determine the fact or number of reuse by comparing with contrast information (not shown) such as a contrast table provided separately.
Next, the clutch body 2 in which the reusable cage unit 5 is incorporated in the outer ring 4 in this way is incorporated in the resin torque transmission wheel 3 to regenerate the one-way clutch 1. The recycled product of the one-way clutch 1 is inspected and shipped. As a shipment inspection of the regenerated one-way clutch 1, the one-way clutch 1 is incorporated into the shaft 30, and it is confirmed whether or not the relative rotation of the outer ring 4 is prevented (locked) by one-way relative rotation of the outer ring 4 with respect to the shaft 30. To do. Further, whether or not rotation is allowed (idling) by the relative rotation of the outer ring 4 in the other direction with respect to the shaft 30 and the idling torque level are confirmed. After the lock and idling confirmation is performed in this way, the one-way clutch 1 is shipped to a user or the like.
以上説明した一方向クラッチ1によると、保持器8に係合子6となる複数のころ6およびばね部材7を互いに分離不能に組み込んで保持器ユニット5とし、この保持器ユニット5を外輪4に軸方向に挿脱可能に組み込んでクラッチ本体2としたため、外輪4に劣化が発生した場合、外輪4から保持器ユニット5を抜き出し、これを新規な外輪4に組み込むことで一方向クラッチ1のリユースが可能となる。このとき、係合子となるころ6やばね部材7は互いに分離不能に保持器8に組み込まれているので、リユース時の洗浄や組立においても外れることがなく、作業性が向上し、組み込みも容易となる。 According to the one-way clutch 1 described above, a plurality of rollers 6 and spring members 7 serving as the engagement elements 6 are incorporated in the cage 8 so as not to be separated from each other to form a cage unit 5, and the cage unit 5 is attached to the outer ring 4. Since the clutch body 2 is assembled so that it can be inserted and removed in the direction, when the outer ring 4 is deteriorated, the cage unit 5 is extracted from the outer ring 4 and incorporated into the new outer ring 4 so that the one-way clutch 1 can be reused. It becomes possible. At this time, since the rollers 6 and the spring members 7 that are the engagement elements are incorporated in the cage 8 so as not to be separated from each other, they are not detached even in cleaning and assembly during reuse, and workability is improved and incorporation is easy. It becomes.
この実施形態では、外輪4の材質の硬度を、ころ6よりも低く設定しているので、ころ6の摩耗よりも外輪4の摩耗が先に生じる。このため、一方向クラッチ1の使用後品を回収し、外輪4に摩耗が生じていなければ、一方向クラッチ1の使用後品も摩耗が生じていないと判断できる。よって、保持器ユニット5の各構成部品の摩耗状態等を確認することなく、換言すれば、一方向クラッチ構成部品毎に分解してこれら構成部品の摩耗状態を確認することなく摩耗等の破損状況を少なくともクラッチ本体2の組み込み状態で、一方向クラッチ1をリユース可能と判断できる。 In this embodiment, since the hardness of the material of the outer ring 4 is set lower than that of the roller 6, the outer ring 4 is worn before the roller 6 is worn. For this reason, if the used product of the one-way clutch 1 is collected and the outer ring 4 is not worn, it can be determined that the used product of the one-way clutch 1 is not worn. Therefore, without confirming the wear state or the like of each component of the cage unit 5, in other words, disassembling each one-way clutch component and confirming the wear or the like without checking the wear state of these components It can be determined that the one-way clutch 1 can be reused at least when the clutch body 2 is incorporated.
また、この実施形態では、外輪4のカム面10の楔角δが逆向き、つまり要求されるロック方向が逆の外輪4に対しては、外輪4への保持器ユニット5の挿入の向きを逆にすることによって、ばね部材7のばね片7aがポケットPtの楔形空間幅狭側へころ6を付勢する配置とすることができる。そのため、ロック方向に左右されることなく保持器ユニット5を共通化することができる。 In this embodiment, the wedge angle δ of the cam surface 10 of the outer ring 4 is reverse, that is, for the outer ring 4 in which the required locking direction is reverse, the direction of insertion of the cage unit 5 into the outer ring 4 is changed. By making it reverse, the spring piece 7a of the spring member 7 can be arranged to urge the roller 6 toward the wedge-shaped space narrow side of the pocket Pt. Therefore, the cage unit 5 can be shared without being influenced by the locking direction.
図10および図11は、この発明の他の実施形態を示す。この実施形態の一方向クラッチ1では、図1〜図9に示す実施形態において、図10(B)に示すように、外輪4の筒部の軸方向長さを保持器ユニット5の軸方向長さより長くして、外輪4内に保持器ユニット5を組み込んだ状態で、外輪4のフランジ11を有しない一端部側において、その一端部と保持器ユニット5の端部とで囲まれる凹部G1が形成されるようにしている。また、樹脂製トルク伝達輪3は、図11(A)に示すように、外輪4に外嵌する筒部3aと、この筒部3aにおける外輪4のフランジ非形成側端部に対応する端部に設けられる径方向内向きのフランジ部3bとでなる。フランジ部3bは、その内径側が軸方向に延びて外輪4の内周面に嵌合する内周嵌合部3baとされている。さらに、フランジ部3bの表面には、外輪4の外周に沿ってリング状に延びる切り込み部22が形成されている。その他の構成は、図1〜図9に示した実施形態の場合と同様である。 10 and 11 show another embodiment of the present invention. In the one-way clutch 1 of this embodiment, in the embodiment shown in FIGS. 1 to 9, the axial length of the cylindrical portion of the outer ring 4 is set to the axial length of the cage unit 5 as shown in FIG. In a state in which the cage unit 5 is incorporated in the outer ring 4 for a longer period, a recess G1 surrounded by the one end portion and the end portion of the cage unit 5 is formed on one end portion side of the outer ring 4 that does not have the flange 11. To be formed. Further, as shown in FIG. 11A, the resin torque transmitting wheel 3 includes a cylindrical portion 3a fitted on the outer ring 4, and an end portion corresponding to the flange-unformed end portion of the outer ring 4 in the cylindrical portion 3a. And a radially inward flange portion 3b. The flange portion 3b is an inner peripheral fitting portion 3ba that has an inner diameter side extending in the axial direction and is fitted to the inner peripheral surface of the outer ring 4. Further, a cut portion 22 extending in a ring shape along the outer periphery of the outer ring 4 is formed on the surface of the flange portion 3b. Other configurations are the same as those of the embodiment shown in FIGS.
この実施形態の場合、トルク伝達輪3からクラッチ本体2を引き抜くとき、図11(B)のように、トルク伝達輪3の筒部3aを治具31で保持した状態で、外輪4をそのフランジ11を有する端部側から矢印Aのように別の治具(図示せず)で押すことにより、トルク伝達輪3のフランジ部3bをその切り込み部22において円筒部3aから切り離して、切り離されたフランジ部3bと共にクラッチ本体2をトルク伝達輪3から引き抜くことができる。また、外輪4におけるフランジ11の内周面の切り欠き部11aを保持器ユニット5の押し出し用窓として用いることにより、治具を使用して外輪4内から前記フランジ部3bと共に保持器ユニット5を容易に軸方向に押し出すことができる。 In the case of this embodiment, when the clutch body 2 is pulled out from the torque transmission wheel 3, the outer ring 4 is flanged with the cylindrical portion 3a of the torque transmission wheel 3 held by the jig 31, as shown in FIG. The flange portion 3b of the torque transmitting wheel 3 is separated from the cylindrical portion 3a at the cut portion 22 by being pushed by another jig (not shown) as indicated by an arrow A from the end portion side having 11. The clutch body 2 can be pulled out from the torque transmission wheel 3 together with the flange portion 3b. Further, by using the notch portion 11a of the inner peripheral surface of the flange 11 in the outer ring 4 as a push-out window for the cage unit 5, the cage unit 5 can be moved together with the flange portion 3b from the inside of the outer ring 4 using a jig. It can be easily extruded in the axial direction.
この一方向クラッチ1の作動時において、樹脂製トルク伝達輪3のフランジ部3bは、その内周嵌合部3baが外輪4の内周面に嵌合しているので、フランジ部3bに生じるラジアル荷重は切り込み部22には負荷されず、作動時にフランジ部3bがその切り込み部22から破損してしまうのを防止できる。 When the one-way clutch 1 is operated, the flange portion 3b of the resin torque transmitting wheel 3 has a radial fitting generated on the flange portion 3b because the inner circumferential fitting portion 3ba is fitted to the inner circumferential surface of the outer ring 4. The load is not applied to the cut portion 22, and the flange portion 3 b can be prevented from being damaged from the cut portion 22 during operation.
図12および図13は、この発明のさらに他の実施形態を示す。この実施形態の一方向クラッチ1では、図1〜図9に示す実施形態において、図12(A),(B)に示すように、外輪4のフランジ11を、外輪4の一端より内側に設け、外輪4の端部と前記フランジ11とで囲まれる連結用凹部G2を形成している。この連結用凹部G2を形成する外輪4の端部の内周面は、図12(A)のように非円形である例えば五角形に形成されている。また、樹脂製トルク伝達輪3は、図13(B)に示すように、ローラ等の被伝達体に連結する軸方向に長い形状のものであって、その一端に前記外輪4の連結用凹部G2に嵌合する五角柱状の連結部23が形成されている。外輪4の連結用凹部G2にトルク伝達輪3の連結部23を嵌め込むことにより、外輪4とトルク伝達輪3とが一体に連結される。これにより、樹脂製トルク伝達輪3からのクラッチ本体2の取り外しも容易となる。その他の構成および作用効果は、図1〜図9に示した実施形態の場合と同様である。 12 and 13 show still another embodiment of the present invention. In the one-way clutch 1 of this embodiment, in the embodiment shown in FIGS. 1 to 9, as shown in FIGS. 12A and 12B, the flange 11 of the outer ring 4 is provided inside one end of the outer ring 4. A connecting recess G2 surrounded by the end of the outer ring 4 and the flange 11 is formed. The inner peripheral surface of the end of the outer ring 4 that forms the connecting recess G2 is formed in, for example, a pentagon that is non-circular as shown in FIG. Further, as shown in FIG. 13 (B), the resin torque transmission wheel 3 has a shape that is long in the axial direction to be connected to a transmission body such as a roller, and has a connecting recess for the outer ring 4 at one end thereof. A pentagonal columnar connecting portion 23 is formed to be fitted to G2. By fitting the connecting portion 23 of the torque transmission wheel 3 into the connection recess G2 of the outer ring 4, the outer ring 4 and the torque transmission wheel 3 are integrally connected. Thereby, the clutch body 2 can be easily detached from the resin torque transmission wheel 3. Other configurations and operational effects are the same as those of the embodiment shown in FIGS.
図14および図15は、この発明のさらに他の実施形態を示す。この実施形態の一方向クラッチ1でも、図1〜図9に示す実施形態において、図14(B),(C)に示すように、外輪4の筒部内周面の軸方向長さを保持器ユニット5の軸方向長さよりも長くして、外輪4内に保持器ユニット5を組み込んだ状態で、外輪4のフランジ11を有しない一端部において、その一端部と保持器ユニット5の端部とで囲まれる連結用凹部G3が形成されるようにしている。これとは別に、外輪4の前記一端部の周方向の一部には切り欠き状の凹部4aを設けている。この場合も、樹脂製トルク伝達輪3はローラ等の被伝達体に連結する軸方向に長い形状のものであって、図15(B),(C)に示すように、その一端に前記外輪4の連結用凹部G3に嵌合する連結部24が形成されている。この場合の連結部24は、図15(B)のXV−XV矢視断面図を示す図15(C)のように、その周方向の一部が外輪4の前記端部内周面に嵌合する内周嵌合部24aとされ、周方向の他の部分が外輪4の前記端部の切り欠き状凹部4aに係合する係合部24bとされている。この場合も、外輪4の連結用凹部G3に樹脂製トルク伝達輪3の連結部24を嵌め込むことにより、外輪4と樹脂製トルク伝達輪3とが一体に連結される。これにより、樹脂製トルク伝達輪3からのクラッチ本体2の取り外しも容易となる。その他の構成および作用効果は、図1〜図9に示した実施形態の場合と同様である。 14 and 15 show still another embodiment of the present invention. Also in the one-way clutch 1 of this embodiment, in the embodiment shown in FIGS. 1 to 9, the axial length of the inner peripheral surface of the cylindrical portion of the outer ring 4 is determined as shown in FIGS. 14 (B) and 14 (C). One end of the outer ring 4 that does not have the flange 11 and the end of the retainer unit 5 in a state where the cage unit 5 is incorporated in the outer ring 4 and is longer than the axial length of the unit 5. A connecting recess G3 surrounded by is formed. Apart from this, a notch-like recess 4 a is provided in a part of the outer ring 4 in the circumferential direction of the one end. Also in this case, the resin torque transmitting wheel 3 has a shape that is long in the axial direction connected to a body to be transmitted such as a roller, and as shown in FIGS. A connecting portion 24 that fits into the four connecting recesses G3 is formed. In this case, the connecting portion 24 is partially fitted in the inner peripheral surface of the end portion of the outer ring 4 as shown in FIG. 15C showing a cross-sectional view taken along the line XV-XV in FIG. The inner circumferential fitting portion 24a is configured as an engaging portion 24b that engages with the notched concave portion 4a at the end of the outer ring 4. Also in this case, the outer ring 4 and the resin torque transmitting wheel 3 are integrally connected by fitting the connecting portion 24 of the resin torque transmitting wheel 3 into the connecting recess G3 of the outer ring 4. Thereby, the clutch body 2 can be easily detached from the resin torque transmission wheel 3. Other configurations and operational effects are the same as those of the embodiment shown in FIGS.
図16および図17は、保持器の変形例を示す。この保持器8Aは、いわば、上記各実施形態における保持器8と蓋部材9とを一体化させ、係合子であるころ6(図1)を外径面から抜け出し不能に組み付けるようにしたものである。特に説明する事項の他は、前記実施形態の保持器8と同様である。この保持器8Aは、軸方向に互いに離れた一対のリング状の側板部14A,14Bと、両側板部14A,14B間に渡って円周方向の複数箇所に設けられた柱部15Aとでなり、全体が一体に成形されて樹脂製である。隣合う柱部15A,15Aと両側の側板部14A,14Bとで囲まれる空間が、各ころ6(図1)を収容するポケットPtとなる。これら各ポケットPtに開口して、片方の側板部14Aから各柱部15Aの一側部にわたり、軸方向に延びるばね片収容空間16が設けられている。ばね片収容空間16は、片方の側板部14Aに対して貫通しているが、もう片方の側板部14Bに対しては非貫通である。ばね片収容空間16は、図4と共に前述したばね部材7の各ばね片7aを収容する空間であり、これらのばね片収容空間16は各ポケットPtの楔形空間幅拡側に位置する。保持器8の外周面は、外輪4(図8)の内周面に嵌合する断面形状とされている。すなわち、保持器8の外周面には、外輪4の内周面の位置決め用溝12に嵌合する複数の突条17が周方向に等配して設けられている。 16 and 17 show a modified example of the cage. In other words, the cage 8A is formed by integrating the cage 8 and the lid member 9 in each of the above embodiments so that the roller 6 (FIG. 1) as an engaging member is assembled so as not to be pulled out from the outer diameter surface. is there. Other than the matters to be specifically described, the cage 8 is the same as the cage 8 of the above embodiment. The cage 8A is composed of a pair of ring-shaped side plate portions 14A and 14B that are separated from each other in the axial direction, and column portions 15A that are provided at a plurality of locations in the circumferential direction across both side plate portions 14A and 14B. The whole is integrally molded and is made of resin. A space surrounded by the adjacent column portions 15A and 15A and the side plate portions 14A and 14B on both sides is a pocket Pt that accommodates each roller 6 (FIG. 1). A spring piece accommodation space 16 extending in the axial direction is provided extending from one side plate portion 14A to one side portion of each column portion 15A so as to open to each pocket Pt. The spring piece accommodating space 16 penetrates the one side plate portion 14A, but does not penetrate the other side plate portion 14B. The spring piece accommodating space 16 is a space for accommodating each spring piece 7a of the spring member 7 described above with reference to FIG. 4, and these spring piece accommodating spaces 16 are located on the wedge-shaped space widening side of each pocket Pt. The outer peripheral surface of the cage 8 has a cross-sectional shape that fits into the inner peripheral surface of the outer ring 4 (FIG. 8). That is, on the outer peripheral surface of the cage 8, a plurality of ridges 17 that are fitted in the positioning grooves 12 on the inner peripheral surface of the outer ring 4 are provided equally in the circumferential direction.
図16,17において、各ポケットPtの保持器外径側の開口縁には、両側の柱部15Aからそれぞれ突出して係合子が外径側6へ抜け出すことを阻止する抜け止め突部28,29を設ける。これら抜け止め突部28,29は、柱部15Aの全長に渡って長さ方向に延びているが、柱部長さ方向の一部だけに設けても良い。前記両側の柱部15A,15A間の開口幅、つまり抜け止め突部28,29間の幅は、ころ6の外径よりも狭いが、前記抜け止め突部28,29は、保持器8Aの外径側から前記ころ6を押し込むことで、弾性変形してころ6のポケットPt内への挿入可能なものとされる。なお、必ずしも両側の抜け止め突部28,29を前記弾性変形が可能なものとする必要はなく、いずれか片方の抜け止め突部28,29が弾性変形可能であれば良い。この実施形態では、片方の抜け止め突部28につき、弾性変形が生じ易いように、柱部長さ方向の中央部28aが両側部よりも次第に大きく突出する形状としてあり、かつ中央部28aのみ局部的に突出する2段の突出形状に抜け止め突部28を形成している。この保持器8Aは、上記各実施形態の一方向クラッチ1において、その保持器8と蓋板部材9の代わりに用いられ、前記保持器ユニット5を構成するものとされる。 In FIGS. 16 and 17, the retaining protrusions 28 and 29 that protrude from the pillar portions 15 </ b> A on both sides to prevent the engaging element from slipping out to the outer diameter side 6 at the opening edge of the pocket Pt on the outer diameter side of the cage. Is provided. These retaining protrusions 28 and 29 extend in the length direction over the entire length of the column portion 15A, but may be provided only in a part of the column portion length direction. The opening width between the column portions 15A and 15A on both sides, that is, the width between the retaining projections 28 and 29 is narrower than the outer diameter of the roller 6, but the retaining projections 28 and 29 are provided on the retainer 8A. By pressing the roller 6 from the outer diameter side, the roller 6 is elastically deformed and can be inserted into the pocket Pt of the roller 6. Note that the retaining protrusions 28 and 29 on both sides are not necessarily made elastically deformable, and any one of the retaining protrusions 28 and 29 only needs to be elastically deformable. In this embodiment, the central portion 28a in the length direction of the column portion gradually protrudes from both sides so that elastic deformation is likely to occur in one of the retaining protrusions 28, and only the central portion 28a is localized. The retaining projection 28 is formed in a two-stage projecting shape projecting to the top. The retainer 8A is used in place of the retainer 8 and the cover plate member 9 in the one-way clutch 1 of each of the above embodiments, and constitutes the retainer unit 5.
このように保持器8Aに弾性変形可能な抜け止め突部28,29を設けた場合、保持器8Aへのころ6の組み込みは、保持器8Aの外径側から各ポケットPtにころ6を押し込むことにより行う。このとき、抜け止め突部28,29は、保持器8Aの材質である樹脂の持つ弾性により撓むなどの弾性変形をし、特に中央部28aの突出量が大きくされた抜け止め突部28が弾性変形し、ころ6のポケットPt内への通過を許す。しかし、組こんでしまうと、ころ6は抜け止め突部28,29に係合して抜け出すことが阻止される。そのため、保持器8Aへのころ6の組み込みが容易であり、またリユースのための外輪4からの保持器ユニット5の取り出し時に、ころ6が不測に抜け出すことがなく、リユースのための分解および再組立の作業が容易に行える。 When the retainer protrusions 28 and 29 that can be elastically deformed are provided in the cage 8A in this way, the rollers 6 are inserted into the cage 8A from the outer diameter side of the cage 8A into the pockets Pt. By doing. At this time, the retaining projections 28 and 29 are elastically deformed by the elasticity of the resin that is the material of the cage 8A, and the retaining projection 28 in which the protruding amount of the central portion 28a is increased. It is elastically deformed and allows the roller 6 to pass into the pocket Pt. However, when assembled, the rollers 6 are prevented from engaging with the retaining protrusions 28 and 29 and coming out. Therefore, it is easy to incorporate the roller 6 into the cage 8A, and when the cage unit 5 is taken out from the outer ring 4 for reuse, the roller 6 does not come out unexpectedly, and can be disassembled and reused for reuse. Easy assembly work.
なお、上記した各実施形態において、ばね部材7は種々の形態のものを代替可能である。金属板からなるばね部材7に代えてコイルばねからなるばね部材を適用することも可能である。係合子として、ころ6の他に、ボール等を用いても良い。トルク伝達輪3は、プーリやギヤであっても良い。 In each of the above-described embodiments, the spring member 7 can be replaced with various forms. Instead of the spring member 7 made of a metal plate, a spring member made of a coil spring can be applied. In addition to the rollers 6, balls or the like may be used as the engaging elements. The torque transmission wheel 3 may be a pulley or a gear.
1…一方向クラッチ
2…クラッチ本体
3…樹脂製トルク伝達輪
3b…フランジ部
3ba…内周嵌合部
4…外輪
5…保持器ユニット
6…ころ(係合子)
7…ばね部材
8…保持器
8A…保持器
9…蓋部材
10…カム面
11…フランジ
11a…切り欠き部(保持器ユニット押し出し用窓)
20…トルク伝達輪のフランジ
20a…切り欠き部(クラッチ押し出し用窓)
22…切り込み部
23,24…連結部
28,29…抜け止め突部
40…マーク部
Pt…ポケット
DESCRIPTION OF SYMBOLS 1 ... One-way clutch 2 ... Clutch main body 3 ... Resin torque transmission wheel 3b ... Flange part 3ba ... Inner circumference fitting part 4 ... Outer ring 5 ... Cage unit 6 ... Roller (engagement element)
7 ... Spring member 8 ... Cage 8A ... Cage 9 ... Lid member 10 ... Cam surface 11 ... Flange 11a ... Notch (Cage unit push-out window)
20 ... Flange 20a of torque transmission wheel ... Notch (clutch pushing window)
22 ... notches 23 and 24 ... connecting parts 28 and 29 ... retaining protrusion 40 ... mark part Pt ... pocket
Claims (14)
一方向クラッチを回収する過程、樹脂製トルク伝達輪から外輪を抜き取る過程、外輪から保持器ユニットを引き抜く過程、保持器ユニットを洗浄し乾燥させる過程、この洗浄・乾燥した保持器ユニットを新規な外輪に組み込む過程、およびこの外輪に保持器ユニットを組み込んだ組立品を樹脂製トルク伝達輪に組み込む過程を含むことを特徴とする一方向クラッチのリユース方法。
14. A method of reusing a one-way clutch according to claim 1, wherein the one-way clutch is a one-way clutch provided with a resin torque transmission wheel fitted on the outer ring. Because
The process of collecting the one-way clutch, the process of extracting the outer ring from the resin torque transmission wheel, the process of pulling out the cage unit from the outer ring, the process of cleaning and drying the cage unit, and using this cleaned and dried cage unit as a new outer ring And a method for reusing a one-way clutch, comprising the step of incorporating an assembly in which a cage unit is incorporated into the outer ring into a resin torque transmission wheel.
Priority Applications (2)
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JP2010071624A JP2011202756A (en) | 2010-03-26 | 2010-03-26 | One way clutch and method of reusing the same |
PCT/JP2011/056394 WO2011118500A1 (en) | 2010-03-26 | 2011-03-17 | One-way clutch and method for reuse of same |
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JP2010071624A JP2011202756A (en) | 2010-03-26 | 2010-03-26 | One way clutch and method of reusing the same |
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JP2010071624A Pending JP2011202756A (en) | 2010-03-26 | 2010-03-26 | One way clutch and method of reusing the same |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20150035365A (en) * | 2013-09-27 | 2015-04-06 | 가부시키가이샤 시마노 | Roller clutch for fishing reel and spinning reel using the same |
KR20150101905A (en) * | 2014-02-27 | 2015-09-04 | 가부시키가이샤 시마노 | Spinning reel |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3013785A1 (en) * | 2013-11-25 | 2015-05-29 | Skf Ab | CAGE BRAKE FOR FREE WHEEL, FREE WHEEL CAGE FORMED FROM SUCH BRAKE, FREE WHEEL COMPRISING SUCH A CAGE AND METHOD OF ASSEMBLING SUCH A FREE WHEEL |
JP2024032093A (en) * | 2022-08-29 | 2024-03-12 | グローブライド株式会社 | One-way clutch and fishing reel |
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JPH11218160A (en) * | 1998-02-03 | 1999-08-10 | Koyo Seiko Co Ltd | One-way clutch |
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JP2010038358A (en) * | 2008-07-09 | 2010-02-18 | Ntn Corp | One-way clutch and assembling method thereof |
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JPS59142527U (en) * | 1983-03-14 | 1984-09-22 | エヌ・テ−・エヌ東洋ベアリング株式会社 | One-way clutch retainer |
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KR20150035365A (en) * | 2013-09-27 | 2015-04-06 | 가부시키가이샤 시마노 | Roller clutch for fishing reel and spinning reel using the same |
KR102228645B1 (en) * | 2013-09-27 | 2021-03-17 | 가부시키가이샤 시마노 | Roller clutch for fishing reel and spinning reel using the same |
KR20150101905A (en) * | 2014-02-27 | 2015-09-04 | 가부시키가이샤 시마노 | Spinning reel |
KR102294430B1 (en) | 2014-02-27 | 2021-08-26 | 가부시키가이샤 시마노 | Spinning reel |
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