JP2005076789A - Fixture for assembling one-way clutch and assembling method of one-way clutch - Google Patents

Fixture for assembling one-way clutch and assembling method of one-way clutch Download PDF

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JP2005076789A
JP2005076789A JP2003309167A JP2003309167A JP2005076789A JP 2005076789 A JP2005076789 A JP 2005076789A JP 2003309167 A JP2003309167 A JP 2003309167A JP 2003309167 A JP2003309167 A JP 2003309167A JP 2005076789 A JP2005076789 A JP 2005076789A
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way clutch
clutch
inclined surface
sprag
jig
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Naoaki Ikeda
尚明 池田
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Koyo Seiko Co Ltd
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Koyo Seiko Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the workability in mounting an one-way clutch having a retainer and a sprag, on an annular space between inner and outer rings. <P>SOLUTION: This assembling fixture 15 has a guide hole 18, an inclination angle θ1 of a first inclined face 22 at a lead-in opening 20 side, of its inner peripheral face 19 is determined to be larger than an inclination angle θ2 of a second inclined face 23 at a lead-out opening 21 side, and a diameter D1 of the lead-in opening 20 is larger than a maximum diameter Dm of the one-way clutch 8 in an attitude where the sprag 6 is stood along the radial direction. Whereby any sprag 6 can be smoothly inserted from the lead-in opening 20 into the guide hole 18 without kept into contact with an edge part of the lead-in opening 20, the workability can be improved, and the increase of a height of the assembling fixture 15 in comparison with a conventional one, becomes unnecessary by applying the first inclined face 22 having the large inclination angle θ1 as a part of a peripheral wall of the guide hole 18. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、一方向クラッチを内側部材と外側部材の間の環状空間に組込むための一方向クラッチ組込用治具、および一方向クラッチの組込方法に関する。   The present invention relates to a one-way clutch assembling jig for assembling a one-way clutch into an annular space between an inner member and an outer member, and an assembling method of the one-way clutch.

従来から、一方向クラッチの一例としてスプラグを用いたものがある（例えば特許文献１参照）。   Conventionally, there is one using a sprag as an example of a one-way clutch (see, for example, Patent Document 1).

一般に、スプラグを用いた一方向クラッチは、保持器およびばね体により複数個のスプラグを保持させた状態で内外輪間に装着するよう組立てられる。この場合、図７および図８に示すように、内輪５０、外輪５１の上に治具５２を配置し、保持器５３とスプラグ５４とばね体５９とからなる一方クラッチ５５を、治具５２の中心孔５６に装着し、内輪５０、外輪５１の間の環状空間５７に治具５２の中心孔５６から環状空間５１に一方クラッチ５５を押圧するように装着する。   Generally, a one-way clutch using a sprag is assembled to be mounted between inner and outer rings in a state where a plurality of sprags are held by a cage and a spring body. In this case, as shown in FIGS. 7 and 8, a jig 52 is disposed on the inner ring 50 and the outer ring 51, and the one clutch 55 including the cage 53, the sprag 54 and the spring body 59 is connected to the jig 52. It is attached to the center hole 56 and attached to the annular space 57 between the inner ring 50 and the outer ring 51 so as to press the one clutch 55 from the center hole 56 of the jig 52 to the annular space 51.

このため、治具５２の中心孔５６の内周面５８は、内外輪間の環状空間５７に到達した際に各スプラグ５４が同一の姿勢（傾斜角）になるよう、所定の傾斜角をもって徐々に狭められるよう形成されている。
特開昭６０−１５１４２６号 Therefore, the inner peripheral surface 58 of the center hole 56 of the jig 52 gradually has a predetermined inclination angle so that the sprags 54 have the same posture (inclination angle) when reaching the annular space 57 between the inner and outer rings. It is formed so that it can be narrowed.
JP-A-60-151426

図７および図８で示した従来の治具５２において、治具５２の中心孔５６における内周面５８の傾斜角は、各スプラグ５４の姿勢を順次整えるためには、なるべく緩やかなほうが好ましい。しかし内周面５８の傾斜角を緩やかにすると、その分だけ治具５２の軸方向長さを長く設計する必要がある。   In the conventional jig 52 shown in FIGS. 7 and 8, it is preferable that the inclination angle of the inner peripheral surface 58 in the center hole 56 of the jig 52 is as gentle as possible in order to sequentially adjust the posture of each sprag 54. However, if the inclination angle of the inner peripheral surface 58 is moderated, the axial length of the jig 52 needs to be designed to be longer.

また内周面５８の傾斜角を緩やかにすると、中心孔５６の入口径は狭くなり、その分だけ一方クラッチ５５を装着する際の作業性が低下する。   Further, when the inclination angle of the inner peripheral surface 58 is made gentle, the inlet diameter of the center hole 56 becomes narrower, and the workability when the one-way clutch 55 is attached is reduced accordingly.

本発明の一方クラッチの組込用治具は、複数のスプラグと保持器とからなる一方クラッチを、スプラグが係合する円筒状内周面を備えた外側部材およびスプラグが係合する円筒状外周面を備えた内側部材の間の環状空間に装着するために、一方クラッチを環状空間に案内する内周面が導入開口側の第一傾斜面と導出開口側の第二傾斜面とから形成されて、第一傾斜面の傾斜角度θ１と第二傾斜面の傾斜角度θ２との関係をθ１＞θ２とした。   The one-clutch assembly jig according to the present invention includes an outer member having a cylindrical inner peripheral surface with which the sprag is engaged and a cylindrical outer periphery with which the sprag is engaged. An inner peripheral surface for guiding the one-way clutch to the annular space is formed of a first inclined surface on the introduction opening side and a second inclined surface on the outlet opening side for mounting in the annular space between the inner members having the surfaces. Thus, the relationship between the inclination angle θ1 of the first inclined surface and the inclination angle θ2 of the second inclined surface is θ1> θ2.

本発明の一方向クラッチの組込方法は、複数のスプラグと保持器とからなる一方クラッチを、同心に配置した外側部材および内側部材の間の環状空間に装着するに際し、上記一方向クラッチ組込用治具を、その中心軸と環状空間の中心軸とを位置合わせした状態で前記外側部材の端面に載置し、一方クラッチを導入開口に挿入して第一傾斜面から第二傾斜面に案内させるよう挿通することで一方クラッチを環状空間に装着する。   The method for incorporating a one-way clutch according to the present invention provides a method for incorporating the one-way clutch into the annular space between the outer member and the inner member arranged concentrically. The jig is placed on the end surface of the outer member with the center axis thereof aligned with the center axis of the annular space, while the clutch is inserted into the introduction opening to change from the first inclined surface to the second inclined surface. The one-way clutch is mounted in the annular space by being inserted so as to be guided.

前記組込用治具において、第一傾斜面の傾斜角度θ１と第二傾斜面の傾斜角度θ２との関係をθ１＞θ２として、導入開口の径を装着前の一方クラッチの最大径より大きく設定しておくことにより、一方向クラッチの組立時に、一方クラッチの各スプラグの姿勢が一定でない場合でもスプラグが導入開口の縁部に当たることなく組込用治具に容易に装着される。   In the assembly jig, the relationship between the inclination angle θ1 of the first inclined surface and the inclination angle θ2 of the second inclined surface is set to θ1> θ2, and the diameter of the introduction opening is set larger than the maximum diameter of the one-clutch before being mounted. Thus, when the one-way clutch is assembled, even if the sprags of the one-side clutch are not fixed in posture, the sprags can be easily attached to the assembly jig without hitting the edge of the introduction opening.

そして一方クラッチを第二傾斜面に押込むことで、緩やかな傾斜角度を有する第二傾斜面にスプラグが摺接して、スプラグが一定の傾き姿勢になるよう無理なく整列されながら環状空間に装着される。   Then, by pushing the one clutch into the second inclined surface, the sprag slides into contact with the second inclined surface having a gentle inclination angle, and the sprag is mounted in the annular space while being reasonably aligned so as to have a constant inclination posture. The

なお本発明の組込用治具あるいは組込方法では、外輪として、筒状の外輪あるいはハウジングの場合の何れであっても適用でき、筒状の内輪あるいは軸状の内輪何れにも適用できる。   The assembling jig or the assembling method of the present invention can be applied to any of the outer ring and the cylindrical outer ring or the housing, and can be applied to either the cylindrical inner ring or the shaft inner ring.

本発明によれば、組込用治具の高さを高くすることなく、かつ一方クラッチの装着性を良好にして組込作業性を向上することができる。   According to the present invention, it is possible to improve assembling workability without increasing the height of the assembling jig and by improving the one-way clutch mounting property.

以下、本発明の実施形態に係る一方向クラッチの組込方法を、図面を参照して説明する。図１は一方向クラッチの部分拡大平面図、図２は一方向クラッチ組込用治具の単体断面図、図３は使用状態を示す断面図、図４は使用状態を示す平面図、図５使用状態を示す部分拡大図、図６は使用状態を示す部分拡大断面図である。   Hereinafter, a method for incorporating a one-way clutch according to an embodiment of the present invention will be described with reference to the drawings. 1 is a partially enlarged plan view of a one-way clutch, FIG. 2 is a single sectional view of a jig for incorporating a one-way clutch, FIG. 3 is a sectional view showing a use state, FIG. 4 is a plan view showing a use state, FIG. FIG. 6 is a partially enlarged cross-sectional view showing the use state.

図１に示すように、本発明の実施形態に係る一方向クラッチ８は、環状の保持器５、複数のスプラグ６、環状のばね体７からなる。一方クラッチ８は外輪２と、内輪３との間の環状空間４に組込まれて用いられる。   As shown in FIG. 1, the one-way clutch 8 according to the embodiment of the present invention includes an annular cage 5, a plurality of sprags 6, and an annular spring body 7. On the other hand, the clutch 8 is used in an annular space 4 between the outer ring 2 and the inner ring 3.

スプラグ６は、保持器５のポケット９に周方向所定間隔置きに保持され、ばね体７に、保持器５の径方向内方に配置されて各スプラグ６を所定の方向に付勢するためのばね片１０が形成されている。   The sprags 6 are held in the pockets 9 of the cage 5 at predetermined intervals in the circumferential direction. The sprags 6 are arranged on the spring body 7 inward in the radial direction of the cage 5 to urge each sprag 6 in a predetermined direction. A spring piece 10 is formed.

所定の方向とは、スプラグ６の外径カム面１１が外輪２の内周面１２に圧接し、スプラグ６の内径カム面１３が内輪３の外周面１４に圧接する方向であり、一方向クラッチ１における内外輪２，３が同方向に一体回転するロック方向である。スプラグ６の外径カム面１１および内径カム面１３の軸方向両側隅部に円弧状の面取り１１ａ，１３ａが形成されている。   The predetermined direction is a direction in which the outer diameter cam surface 11 of the sprag 6 is in pressure contact with the inner peripheral surface 12 of the outer ring 2, and the inner diameter cam surface 13 of the sprag 6 is in pressure contact with the outer peripheral surface 14 of the inner ring 3. 1 is a locking direction in which the inner and outer rings 2 and 3 in 1 are integrally rotated in the same direction. Arc-shaped chamfers 11 a and 13 a are formed at both axial corners of the outer diameter cam surface 11 and the inner diameter cam surface 13 of the sprag 6.

図２に示すように、前記一方クラッチ８を、内外輪２，３の間の環状空間４に装着する際に一方向クラッチ組込用治具（以下単に「組込用治具」という）１５が用いられる。組込用治具１５は、筒状の本体１６と、この本体１６の軸方向一方側外周に形成された取扱い用のフランジ１７とを有する。   As shown in FIG. 2, when the one clutch 8 is mounted in the annular space 4 between the inner and outer rings 2 and 3, a one-way clutch assembly jig (hereinafter simply referred to as “assembly jig”) 15. Is used. The assembling jig 15 includes a cylindrical main body 16 and a handling flange 17 formed on the outer periphery on one side in the axial direction of the main body 16.

本体１６の中心に、一方クラッチ８を通過案内させる案内孔１８が形成されている。この案内孔１８を形成する内周面１９は、一方クラッチ８を導入する導入開口２０から環状空間４へ導出する導出開口２１へ向けて径が小さくなるよう形成されている。   A guide hole 18 is formed in the center of the main body 16 to guide the one-way clutch 8 through. The inner peripheral surface 19 that forms the guide hole 18 is formed to have a diameter that decreases from the introduction opening 20 that introduces the one-way clutch 8 toward the outlet opening 21 that leads out to the annular space 4.

図３に示すように、導入開口２０の径Ｄ１は、一方クラッチ８においてスプラグ６が径方向に沿うよう起立した姿勢である一方クラッチ８の最大径Ｄｍよりも大きく形成されている。導出開口２１の径Ｄ２は、外輪２の内周面の径Ｄ３に等しいかわずかに小さく設定されている。   As shown in FIG. 3, the diameter D <b> 1 of the introduction opening 20 is formed to be larger than the maximum diameter Dm of the one clutch 8 in which the sprag 6 stands in the radial direction in the one clutch 8. The diameter D2 of the lead-out opening 21 is set equal to or slightly smaller than the diameter D3 of the inner peripheral surface of the outer ring 2.

具体的に、内周面１９は導入開口２０側の第一傾斜面２２と、この第一傾斜面２２に連続して形成される導出開口２１側の第二傾斜面２３とからなる。第一傾斜面２２と第二傾斜面２３とは、それぞれ中心軸線（軸方向）Ｂに対して所定の傾斜角θ１，θ２を有する円錐状面に形成されており、第一傾斜面２２の傾斜角度θ１が、第二傾斜面２３の傾斜角度θ２に比べて大きく形成されている。   Specifically, the inner peripheral surface 19 includes a first inclined surface 22 on the introduction opening 20 side and a second inclined surface 23 on the lead-out opening 21 side formed continuously with the first inclined surface 22. The first inclined surface 22 and the second inclined surface 23 are formed as conical surfaces having predetermined inclination angles θ1 and θ2 with respect to the central axis (axial direction) B, respectively. The angle θ1 is formed larger than the inclination angle θ2 of the second inclined surface 23.

第一傾斜面２２と第二傾斜面２３とは、鈍角を有する連続部２５を介して連続している。この連続部２５の径Ｄ４は、スプラグ６が最も傾倒した姿勢である一方クラッチ８の最小径Ｄｎよりも大きく設定されている。   The first inclined surface 22 and the second inclined surface 23 are continuous via a continuous portion 25 having an obtuse angle. The diameter D4 of the continuous portion 25 is set larger than the minimum diameter Dn of the clutch 8 while the sprag 6 is in the most inclined posture.

次に、外輪２および内輪３の間の環状空間４に組込用治具１５を用いて一方クラッチ８を組込むための組込方法を説明する。   Next, an assembling method for incorporating the one-way clutch 8 into the annular space 4 between the outer ring 2 and the inner ring 3 using the assembling jig 15 will be described.

図３に示すように、まず、外輪２および内輪３を載置台３０に同心に配置し、組込用治具１５を外輪２の端面２ａに載置する。この場合、フランジ１７を利用して環状空間４の中心と組込用治具１５の案内孔１８の中心とを、径方向で位置合わせしておく。   As shown in FIG. 3, first, the outer ring 2 and the inner ring 3 are arranged concentrically on the mounting table 30, and the assembling jig 15 is placed on the end surface 2 a of the outer ring 2. In this case, the center of the annular space 4 and the center of the guide hole 18 of the assembling jig 15 are aligned in the radial direction using the flange 17.

次に、保持器５、スプラグ６、およびばね体７からなる一方クラッチ８を、その中心軸と組込用治具１５の中心軸とが径方向でほぼ一致するよう、例えば作業者によって上方から導入開口２０に挿入する。この一方クラッチ８では、各スプラグ６は、保持器５のポケット９に保持されているものの不安定な状態にあり、図４および図５に示すように、各スプラグ６の姿勢は一定でない。   Next, the one clutch 8 comprising the cage 5, the sprag 6, and the spring body 7 is placed from above by, for example, an operator so that the central axis thereof and the central axis of the assembling jig 15 substantially coincide with each other in the radial direction. Insert into the introduction opening 20. In the one-way clutch 8, each sprag 6 is held in the pocket 9 of the cage 5, but is in an unstable state, and the posture of each sprag 6 is not constant as shown in FIGS.

しかし前述のように、導入開口２０の径Ｄ１は、一方クラッチ８においてスプラグ６が径方向に沿うよう起立した姿勢での最大径Ｄｍよりも大きく形成されている。このため、何れのスプラグ６も導入開口２０の縁部に当たることなく円滑に導入開口２０から案内孔１８に挿入できる。   However, as described above, the diameter D1 of the introduction opening 20 is formed to be larger than the maximum diameter Dm in the posture in which the sprag 6 stands up along the radial direction in the one-way clutch 8. For this reason, any sprag 6 can be smoothly inserted into the guide hole 18 from the introduction opening 20 without hitting the edge of the introduction opening 20.

また上述のように、導入開口２０から案内孔１８に挿入された一方クラッチ８のスプラグ６は、第一傾斜面２２の連続部２５側近傍に当たって止まる。   As described above, the sprag 6 of the one-way clutch 8 inserted into the guide hole 18 from the introduction opening 20 hits the vicinity of the continuous portion 25 side of the first inclined surface 22 and stops.

この状態から一方クラッチ８をさらに下方に押込むと、一方クラッチ８（スプラグ６）は連続部２５を、傾斜角度を変えながら乗越えて、第一傾斜面２２、連続部２５を超えた後第二傾斜面２３に至り、図６に示すように、スプラグ６が第二傾斜面２３に接触して、それぞれ同じ方向へ傾倒して整列する。   When the one-clutch 8 is pushed further downward from this state, the one-clutch 8 (sprag 6) gets over the continuous portion 25 while changing the inclination angle, and after passing the first inclined surface 22 and the continuous portion 25, the second clutch As shown in FIG. 6, the sprags 6 come into contact with the second inclined surface 23 and are tilted in the same direction and aligned.

さらに下方へ押込むと第二傾斜面２３の径に応じて各スプラグ６がさらに傾倒し、一方クラッチ８が導出開口２１に至ったときに、例えば一方クラッチ８の外径が導出開口２１の径Ｄ２と等しい径となって、一方クラッチ８が環状空間４に挿入可能となる。さらに一方クラッチ８を下方に押圧すると、一方クラッチ８が環状空間４に装着される。   When pushed further downward, each sprag 6 is further tilted according to the diameter of the second inclined surface 23, and when one clutch 8 reaches the outlet opening 21, for example, the outer diameter of the one clutch 8 is the diameter of the outlet opening 21. The diameter is equal to D2, and the one-way clutch 8 can be inserted into the annular space 4. When the one clutch 8 is further pressed downward, the one clutch 8 is mounted in the annular space 4.

このように本発明の実施形態によれば、第一傾斜面２２の傾斜角度θ１を、第二傾斜面２３の傾斜角度θ２に比べて大きく形成して、導入開口２０の径Ｄ１を、一方クラッチ８においてスプラグ６が径方向に沿うよう起立した姿勢での最大径Ｄｍよりも大きく形成している。   Thus, according to the embodiment of the present invention, the inclination angle θ1 of the first inclined surface 22 is formed larger than the inclination angle θ2 of the second inclined surface 23, and the diameter D1 of the introduction opening 20 is set to the one-way clutch. 8, the sprag 6 is formed to be larger than the maximum diameter Dm in an upright posture along the radial direction.

このため、例えば作業者が一方クラッチ８をつかんで組込用治具１５に装着する場合であっても、作業者の指先などが入るスペースを確保することができ、かつ何れのスプラグ６も導入開口２０の縁部に当たることなく、一方クラッチ８を導入開口２０から案内孔１８に容易に挿入することができる。   For this reason, for example, even when the operator holds the one-way clutch 8 and attaches it to the assembling jig 15, a space for the operator's fingertips and the like can be secured, and any sprag 6 is introduced. The one-way clutch 8 can be easily inserted into the guide hole 18 from the introduction opening 20 without hitting the edge of the opening 20.

また、緩やかな傾斜角度θ２をもった第二傾斜面２３の高さは、例えば一方クラッチ８の高さに等しい高さを有すれば充分であって、必要以上の高さに設定する必要はない。そこで、案内孔１８の周壁の一部を第二傾斜面２３の傾斜角度θ２よりも大きな傾斜角度θ１を有する第一傾斜面２２とすれば、組込用治具１５の高さを従来に比べて高くする必要がなく、組込用治具１５が大型化することを防止できる。   Further, it is sufficient that the second inclined surface 23 having the gentle inclination angle θ2 has a height equal to the height of the one-way clutch 8, for example, and it is necessary to set the height higher than necessary. Absent. Therefore, if a part of the peripheral wall of the guide hole 18 is the first inclined surface 22 having an inclination angle θ1 larger than the inclination angle θ2 of the second inclined surface 23, the height of the assembling jig 15 is compared with the conventional one. Therefore, it is possible to prevent the assembly jig 15 from becoming large.

なお、第一傾斜面２２と第二傾斜面２３との連続部２５の形状として例えば円弧状の曲線としてもよく、この場合特に一方クラッチ８の案内が円滑になる。   Note that the shape of the continuous portion 25 of the first inclined surface 22 and the second inclined surface 23 may be, for example, an arcuate curve, and in this case, the guide of the one-way clutch 8 is particularly smooth.

他の好ましい実施形態を、図７ないし図１２を参照して説明する。図７を参照して、組込用治具３５は、筒状の本体３６と、この本体３６の軸方向一方側外周に形成された取扱い用のフランジ３７とを有する。   Another preferred embodiment will be described with reference to FIGS. Referring to FIG. 7, the assembling jig 35 includes a cylindrical main body 36 and a handling flange 37 formed on the outer periphery on one side in the axial direction of the main body 36.

本体３６の中心に、環状の保持器５、複数のスプラグ６、および環状のばね体７からなる一方クラッチ８を通過案内させる案内孔３８が形成されている。この案内孔３８を形成する内周面３９は、一方クラッチ８を導入する導入開口４０から導出開口４１へ向けて径が小さくなるよう形成されている。   A guide hole 38 is formed in the center of the main body 36. The guide hole 38 includes the annular retainer 5, the plurality of sprags 6, and the annular spring body 7, and guides the one clutch 8 to pass therethrough. The inner peripheral surface 39 forming the guide hole 38 is formed so that the diameter decreases from the introduction opening 40 for introducing the clutch 8 toward the outlet opening 41.

図８を参照して、導入開口４０の径Ｄ５は、一方クラッチ８においてスプラグ６が径方向に沿うよう起立した姿勢である一方クラッチ８の最大径Ｄｍよりも大きく形成され、導出開口４１の径Ｄ６は、組立台４２の中心側に形成された円形の厚肉部４３の径Ｄ７よりもわずかに大きく設定されている。   Referring to FIG. 8, the diameter D <b> 5 of the introduction opening 40 is formed to be larger than the maximum diameter Dm of the one clutch 8 in which the sprag 6 stands in the radial direction in the one clutch 8. D6 is set to be slightly larger than the diameter D7 of the circular thick portion 43 formed on the center side of the assembly table 42.

組込用治具３５の内周面３９は、導入開口４０側の第一傾斜面４４と、この第一傾斜面４４に連続して形成される導出開口４１側の第二傾斜面４５と、この第二傾斜面４５から導出開口４１に連続する円筒面４６とからなる。   The inner peripheral surface 39 of the assembling jig 35 includes a first inclined surface 44 on the introduction opening 40 side, a second inclined surface 45 on the lead-out opening 41 side formed continuously with the first inclined surface 44, The second inclined surface 45 and the cylindrical surface 46 continuing from the outlet opening 41 are formed.

第一傾斜面４４と第二傾斜面４５とは、それぞれ中心軸線Ｂに対して異なる所定の傾斜角θ１，θ２を有する円錐状面をなしている。第一傾斜面４４の傾斜角度θ１は、第二傾斜面４５の傾斜角度θ２に比べて大きく形成されている。   The first inclined surface 44 and the second inclined surface 45 are conical surfaces having different predetermined inclination angles θ1 and θ2 with respect to the central axis B, respectively. The inclination angle θ1 of the first inclined surface 44 is formed larger than the inclination angle θ2 of the second inclined surface 45.

第一傾斜面４４と第二傾斜面４５、第二傾斜面４５と円筒面４６とは、鈍角を有する連続部４７，４８を介してそれぞれ連続している。このうち連続部４７の径Ｄ８は、スプラグ６が最も傾倒した姿勢である一方クラッチ８の最小径Ｄｎよりも大きく設定されている。   The first inclined surface 44 and the second inclined surface 45, and the second inclined surface 45 and the cylindrical surface 46 are continuous via continuous portions 47 and 48 having obtuse angles, respectively. Among these, the diameter D8 of the continuous portion 47 is set larger than the minimum diameter Dn of the clutch 8 while the sprag 6 is in the most inclined posture.

組込用治具３５の本体３６の上面中心側で導入開口４０に連続して、導入開口４０に比べて大きな径Ｄ９を有する環状の組付用凹部４９が形成されている。この組付用凹部４９の外周壁面５０は軸方向Ｂに対して傾斜して形成されている。   An annular assembling recess 49 having a diameter D9 larger than that of the introduction opening 40 is formed continuously to the introduction opening 40 on the upper surface center side of the main body 36 of the assembling jig 35. The outer peripheral wall surface 50 of the assembling recess 49 is formed to be inclined with respect to the axial direction B.

本体３６の底部に、外輪５１の中心側に形成された環状凹部５２に嵌合する、これと相対形状の環状凸部５３が形成されている。   At the bottom of the main body 36, an annular convex portion 53 having a relative shape to the annular concave portion 52 formed on the center side of the outer ring 51 is formed.

このような構成を有する組込用治具３５を用いて、図１２に示すように一方向クラッチ８を内外輪３，５１間に組込む。この場合まず、図７に示すように、組立台４２の厚肉部４３の中心に形成された浅溝４３ａに円筒状の内輪３を載置して、内輪３を組立台４２上で位置決めする。続いて、組立台４２の上方から組込用治具３５を、その導出開口４１に連続する円筒面４６が厚肉部４３に嵌合するよう組立台４２に載置する。このようにすることで、内輪３および組込用治具３５の位置関係を正確に設定することができる。   Using the assembling jig 35 having such a configuration, the one-way clutch 8 is assembled between the inner and outer rings 3 and 51 as shown in FIG. In this case, first, as shown in FIG. 7, the cylindrical inner ring 3 is placed in the shallow groove 43 a formed at the center of the thick portion 43 of the assembly table 42, and the inner ring 3 is positioned on the assembly table 42. . Subsequently, the assembling jig 35 is placed on the assembling table 42 from above the assembling table 42 so that the cylindrical surface 46 continuing to the lead-out opening 41 is fitted to the thick portion 43. By doing in this way, the positional relationship between the inner ring 3 and the assembling jig 35 can be set accurately.

次に一方クラッチ８を、その中心軸と組込用治具３５の中心軸とが径方向でほぼ一致するよう、例えば作業者によって上方から導入開口４０に挿入する。この場合、特に、導入開口４０に比べて大きな径Ｄ９の組付用凹部４９が本体３６の上面に形成されていることによって、一方クラッチ８を内輪３と組込用治具３５との間の環状空間５５に挿入する作業を容易に行うことができる。   Next, the one clutch 8 is inserted into the introduction opening 40 from above, for example, by an operator so that the central axis thereof and the central axis of the assembling jig 35 substantially coincide with each other in the radial direction. In this case, in particular, the assembly recess 49 having a diameter D9 larger than that of the introduction opening 40 is formed on the upper surface of the main body 36, so that the one clutch 8 is interposed between the inner ring 3 and the assembly jig 35. The operation of inserting into the annular space 55 can be easily performed.

ところで、一方クラッチ８において各スプラグ６は保持器５のポケット９に保持されているものの不安定な状態にあり、各スプラグ６の姿勢は一定でない。しかし、導入開口４０の径Ｄ５は、一方クラッチ８においてスプラグ６が径方向に沿うよう起立した姿勢での最大径Ｄｍよりも大きく形成されているため、何れのスプラグ６も導入開口４０の縁部に当たることなく円滑に導入開口４０から環状空間５５に挿入できる。   Meanwhile, in the clutch 8, each sprag 6 is held in the pocket 9 of the cage 5, but is in an unstable state, and the posture of each sprag 6 is not constant. However, since the diameter D5 of the introduction opening 40 is formed larger than the maximum diameter Dm in the posture in which the sprag 6 stands up along the radial direction in the clutch 8, any sprag 6 has an edge portion of the introduction opening 40. It can be smoothly inserted into the annular space 55 from the introduction opening 40 without hitting it.

導入開口４０から案内孔３８に挿入された一方クラッチ８のスプラグ６は、第一傾斜面４４と第二傾斜面４５の連続部４７近傍に当たって止まる。この状態から一方クラッチ８をさらに下方に押込むと、一方クラッチ８（スプラグ６）は連続部４７を傾斜角度を変えながら乗越えて、第一傾斜面４４、連続部４７を超えた後第二傾斜面４５に至り、スプラグ６が第二傾斜面４５に接触して、それぞれ同じ方向へ傾倒して整列される。   The sprag 6 of the one-way clutch 8 inserted into the guide hole 38 from the introduction opening 40 stops in contact with the vicinity of the continuous portion 47 between the first inclined surface 44 and the second inclined surface 45. When the one-clutch 8 is further pushed downward from this state, the one-clutch 8 (sprag 6) gets over the continuous portion 47 while changing the inclination angle, exceeds the first inclined surface 44 and the continuous portion 47, and then the second inclination. The sprags 6 reach the surface 45 and come into contact with the second inclined surface 45 and are tilted in the same direction and aligned.

一方クラッチ８をさらに下方へ押込むと、一方クラッチ８のスプラグ６はそれぞれ姿勢を整えながら第二傾斜面４５と円筒面４６との連続部４８に至る。なお、組立台４２の厚肉部４３は円筒面４６に嵌合しているため、一方クラッチ８は連続部４８よりも導出開口４１側へは移動しない。   On the other hand, when the clutch 8 is further pushed downward, the sprags 6 of the one clutch 8 reach the continuous portion 48 of the second inclined surface 45 and the cylindrical surface 46 while adjusting their postures. Since the thick part 43 of the assembly table 42 is fitted to the cylindrical surface 46, the clutch 8 does not move to the outlet opening 41 side from the continuous part 48.

続いて内輪３、一方クラッチ８および組込用治具３５からなる組立途中品５７を組立台４２から取外す。続いて図９に示すように、外輪５１の円筒部５６に、組立途中品５７の組込用治具３５を載置する。この場合、本体３６の底部の環状凸部５３を外輪５１の環状凹部５２に嵌合させる。これにより、組立途中品５７は外輪５１に対して径方向に不動に支持された状態となり、また、内輪３は一方クラッチ８におけるスプラグ６からの径方向押圧力により保持された状態にあって、外輪５１の中心孔５８に落下することを阻止されている。   Subsequently, the intermediate product 57 including the inner ring 3, the one-way clutch 8 and the assembly jig 35 is removed from the assembly table 42. Subsequently, as shown in FIG. 9, the assembling jig 35 of the intermediate product 57 is placed on the cylindrical portion 56 of the outer ring 51. In this case, the annular convex portion 53 at the bottom of the main body 36 is fitted into the annular concave portion 52 of the outer ring 51. Thereby, the intermediate product 57 is in a state of being supported in the radial direction relative to the outer ring 51, and the inner ring 3 is held by the radial pressing force from the sprag 6 in the one clutch 8, It is prevented from falling into the center hole 58 of the outer ring 51.

ここで、組込用治具３５とは別の装着用治具５９を用いて、一方クラッチ８を上方から押圧し外輪５１の中心孔５８に装着する。この装着用治具５９は円筒状の大径部６０、小径部６１からなり、大径部６０の外径Ｄ１０は、組込用治具３５の円筒面４６（導出開口４１）の径Ｄ６に比べてわずかに小さく形成され、大径部６０の内径Ｄ１１は、内輪３の外径Ｄ１２に比べて大きく形成されている。   Here, by using a mounting jig 59 different from the mounting jig 35, the one clutch 8 is pressed from above and mounted in the center hole 58 of the outer ring 51. The mounting jig 59 includes a cylindrical large diameter portion 60 and a small diameter portion 61. The outer diameter D10 of the large diameter portion 60 is equal to the diameter D6 of the cylindrical surface 46 (leading opening 41) of the assembling jig 35. The inner diameter D11 of the large diameter portion 60 is formed to be larger than the outer diameter D12 of the inner ring 3.

このような装着用治具５９を用いて、一方クラッチ８を上方から外輪５１の中心孔５８に向けて押圧する。この場合、図１０の仮想線に示すように、一方クラッチ８が円筒部５６に至った時点で一方クラッチ８の外径が導出開口４１の径Ｄ６と等しい径になって、一方クラッチ８とともに内輪３も同時に中心孔５８に挿入され、内輪３の軸方向一部が外輪５１の中心孔５８に連通した段付凹部６５に遊嵌する。   Using such a mounting jig 59, the one-way clutch 8 is pressed from above toward the center hole 58 of the outer ring 51. In this case, as shown by the phantom line in FIG. 10, the outer diameter of the one clutch 8 becomes equal to the diameter D6 of the lead-out opening 41 when the one clutch 8 reaches the cylindrical portion 56. 3 is also inserted into the center hole 58 at the same time, and a part of the inner ring 3 in the axial direction is loosely fitted into a stepped recess 65 communicating with the center hole 58 of the outer ring 51.

続いて図１１に示すように、噛合確認用治具６２の先端部６３を内輪３の内周面に嵌合し、これを軸心回りに回転させることで、内輪３、外輪５１の間に一方クラッチ８のスプラグ６が正しい姿勢にあるかどうかを確認し、噛合確認用治具６２を取外し、図１２で示すような一方向クラッチ１を得る。   Subsequently, as shown in FIG. 11, the tip 63 of the engagement confirmation jig 62 is fitted to the inner peripheral surface of the inner ring 3, and is rotated about the axis so that the inner ring 3 and the outer ring 51 are interposed. On the other hand, it is confirmed whether or not the sprag 6 of the clutch 8 is in the correct posture, the engagement confirmation jig 62 is removed, and the one-way clutch 1 as shown in FIG. 12 is obtained.

この実施形態によれば、組込用治具３５の本体３６に導入開口４０に連続して、導入開口４０に比べて大きな径Ｄ９の組付用凹部４９を形成しているので、図２に示した実施形態の組込用治具１５に比べて一方クラッチ８の装着がいっそう容易になる。   According to this embodiment, the assembling recess 49 having a diameter D9 larger than that of the introduction opening 40 is formed in the main body 36 of the assembling jig 35 continuously to the introduction opening 40. As compared with the assembling jig 15 of the illustrated embodiment, the one-way clutch 8 can be mounted more easily.

本発明の一実施形態を示す一方向クラッチの一部拡大断面図The partially expanded sectional view of the one way clutch which shows one Embodiment of this invention 同じく組込用治具の単体断面図Single unit cross-sectional view of assembly jig 同じく組込用治具の使用状態を示す全体断面図Overall cross-sectional view showing the usage state of the assembly jig 同じく使用状態を示す平面図A plan view showing the usage state 同じく使用状態を示す一部拡大平面図A partially enlarged plan view showing the usage state 同じく使用状態を示すAlso shows usage status 他の好ましい実施形態の組込用治具を組立台に装着する前の断面図Sectional drawing before mounting the jig | tool for assembly of other preferable embodiment to an assembly stand 同じく内輪と組込用治具との間に一方クラッチを装着して組立台に載置した断面図Similarly, a cross-sectional view of one-side clutch mounted on the assembly table between the inner ring and the assembly jig 同じく内輪を外輪に装着する前の断面図Similarly, a cross-sectional view before attaching the inner ring to the outer ring 同じく一方クラッチおよび内輪を外輪に装着する途中の断面図Similarly, a cross-sectional view of the one-way clutch and inner ring attached to the outer ring 同じく噛合確認用治具を内輪に装着した断面図A cross-sectional view of the same engagement check jig mounted on the inner ring 一方向クラッチを内外輪間に装着した断面図Cross-sectional view with one-way clutch mounted between inner and outer rings 従来例を示す組込用治具の使用状態を示す断面図Sectional drawing which shows the use condition of the jig for assembly which shows a prior art example 同じく使用状態を示す平面図A plan view showing the usage state

符号の説明Explanation of symbols

２ 外輪 ３ 内輪
４ 環状空間 ５ 保持器
６ スプラグ ７ ばね体
８ 一方クラッチ １５ 組込用治具
１６ 本体 １８ 案内孔
１９ 内周面 ２０ 導入開口
２２ 第一傾斜面 ２３ 第二傾斜面
θ１，θ２ 傾斜角 2 Outer ring 3 Inner ring
4 annular space 5 cage
6 Sprag 7 Spring body
8 One-way clutch 15 Assembly jig
16 Body 18 Guide hole
19 Inner peripheral surface 20 Introduction opening
22 First inclined surface 23 Second inclined surface
θ1, θ2 tilt angle

Claims (2)

複数のスプラグと保持器とからなる一方クラッチを、スプラグが係合する円筒状内周面を備えた外側部材およびスプラグが係合する円筒状外周面を備えた内側部材の間の環状空間に装着するための組込用治具であって、
一方クラッチを環状空間に案内する内周面が導入開口側の第一傾斜面と導出開口側の第二傾斜面とから形成されて、第一傾斜面の傾斜角度θ１と第二傾斜面の傾斜角度θ２との関係をθ１＞θ２とした、ことを特徴とする一方向クラッチ組込用治具。 One clutch comprising a plurality of sprags and a cage is mounted in an annular space between an outer member having a cylindrical inner peripheral surface with which the sprag is engaged and an inner member having a cylindrical outer peripheral surface with which the sprag is engaged. An assembly jig for
On the other hand, the inner peripheral surface for guiding the clutch to the annular space is formed by the first inclined surface on the introduction opening side and the second inclined surface on the outlet opening side, and the inclination angle θ1 of the first inclined surface and the inclination of the second inclined surface A jig for incorporating a one-way clutch, characterized in that a relationship with an angle θ2 is θ1> θ2. 複数のスプラグと保持器とからなる一方クラッチを、同心に配置した外側部材および内側部材の間の環状空間に装着するための組込方法において、
請求項１に記載の一方向クラッチ組込用治具を、その中心軸と環状空間の中心軸とを位置合わせした状態で外側部材の端面に載置し、一方クラッチを導入開口に挿入して第一傾斜面から第二傾斜面に案内させるよう挿通することで一方クラッチを環状空間に装着する、ことを特徴とする一方向クラッチの組込方法。 In the assembling method for mounting the one clutch composed of a plurality of sprags and a cage in the annular space between the outer member and the inner member arranged concentrically,
The jig for assembling the one-way clutch according to claim 1 is placed on the end surface of the outer member in a state where the center axis of the one-way clutch is aligned with the center axis of the annular space, and the clutch is inserted into the introduction opening. A method of assembling a one-way clutch, wherein the one-way clutch is mounted in an annular space by being inserted so as to be guided from the first inclined surface to the second inclined surface.
JP2003309167A 2003-09-01 2003-09-01 Fixture for assembling one-way clutch and assembling method of one-way clutch Pending JP2005076789A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308013A (en) * 2005-04-28 2006-11-09 Jtekt Corp Tool for integrating sprag type one-way clutch and method for integrating sprag type one-way clutch
CN102218716A (en) * 2010-04-16 2011-10-19 加特可株式会社 Clamp for assembling one-way clutch
JP2012179670A (en) * 2011-02-28 2012-09-20 Shiga Kogyo Kk Roller-biasing leaf spring mounting device and method for mounting roller-biasing leaf spring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308013A (en) * 2005-04-28 2006-11-09 Jtekt Corp Tool for integrating sprag type one-way clutch and method for integrating sprag type one-way clutch
JP4715290B2 (en) * 2005-04-28 2011-07-06 株式会社ジェイテクト Sprag type one-way clutch assembly jig and sprag type one-way clutch assembly method
CN102218716A (en) * 2010-04-16 2011-10-19 加特可株式会社 Clamp for assembling one-way clutch
JP2011226525A (en) * 2010-04-16 2011-11-10 Jatco Ltd Implement for one-way clutch assembling tool
JP2012179670A (en) * 2011-02-28 2012-09-20 Shiga Kogyo Kk Roller-biasing leaf spring mounting device and method for mounting roller-biasing leaf spring

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