JP2018035916A - Oneway clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a oneway clutch which can easily determine an assembling direction of a cage at assembling.SOLUTION: A oneway clutch comprises: an outer ring 2 having an internal peripheral raceway surface 2a; an inner ring 3 arranged in the outer ring 2, and having an external peripheral raceway surface 3a; sprags 4 which are arranged between the outer ring 2 and the inner ring 3, and transmit torque between the external peripheral raceway surface 3a and the internal peripheral raceway surface 2a; a cage 5 having a plurality of pocket parts for holding the sprags 4 along a peripheral direction with intervals; and a ribbon spring 6 which is arranged between the inner ring 3 and the outer ring 2 in order to energize the sprags 4. The cage 5 is composed of an outside cage 7 which is arranged while being sifted to the outer ring 3 side, and an inside cage 8 which is arranged while being shifted to the inner ring 2 side, and the outside cage 7 has a protruded piece part 7a which is oriented outwardly in an axial direction from one end part in the axial direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a one-way clutch, and more particularly to a sprag-type one-way clutch, and more particularly to a sprag-synchronous one-way clutch used mainly in a torque converter for automobiles.

  The sprag synchronization type one-way clutch is used between the inner ring and the outer ring that perform relative rotation, and the sprag as an engaging member changes the posture according to the mutual rotation direction of the inner ring and the outer ring, so that the inner ring and the outer ring It has a function of switching between a state that allows relative rotation and a state that prevents relative rotation.

  This type of one-way clutch is arranged between an outer ring having an inner raceway surface, an inner ring having an outer raceway ring, and an outer ring and an inner ring, and transmits a torque between the inner raceway surface and the outer raceway surface. And a cage for arranging the sprags at equal intervals in the circumferential direction, and a ribbon spring disposed between the inner ring and the outer ring for biasing the sprags.

  The cage is provided with pocket portions for inserting sprags at a predetermined interval along the circumferential direction at a predetermined pitch. A sprag having a gourd-shaped cross-sectional shape is disposed in the pocket portion.

  Each of the sprags has an outer ring side cam surface and an inner ring side cam surface formed with one or two or more curvature radii. The outer ring side cam surface engages with the inner circumferential raceway surface of the outer ring, and the inner ring side cam surface engages with the outer circumferential raceway surface of the inner ring.

  For example, in Patent Document 1, the butted ends of a circular belt body are welded to form an annular body, and a sprag insertion pocket portion formed at equal intervals in the circumferential direction of the annular body, and an adjacent pocket portion. There is described a cage having an inner peripheral surface of an outer ring or a drag protrusion frictionally engaging with an outer peripheral surface of an inner ring in a column portion between them.

  By the way, if the shape of each side part is asymmetric with respect to the center line in the width direction, the bending rigidity of each side part of the belt body serving as the cage is different. For this reason, it becomes difficult to form an annular body by welding so that the end faces of the butted ends of the belt bodies coincide.

  In order to solve such a problem, the cage described in Patent Document 1 uses a band body in which the shapes of both side portions are symmetrical with respect to the center line in the width direction, and the width direction of the band body is The shapes of both side portions with respect to the center line, that is, the center in the axial direction are made symmetrical.

JP-A-6-173777

  However, when the cage described in Patent Document 1 is assembled to the one-way clutch, the cage is in a state that allows relative rotation between the inner ring and the outer ring or prevents relative rotation. It is difficult to determine the direction from the shape of the cage.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a one-way clutch that can easily determine the assembly direction of a cage during assembly.

  In order to solve the above problems, the present invention provides an outer ring having an inner raceway surface, an inner ring having an outer raceway surface disposed in the outer ring, and the outer raceway disposed between the outer ring and the inner ring. A sprag for transmitting torque between a surface and the inner circumferential raceway surface, a retainer having a plurality of pocket portions for holding the sprag at intervals along the circumferential direction, and for energizing the sprag In the one-way clutch provided with an inner ring and a ribbon spring disposed between the outer ring and the cage, the cage is formed of an annular body in which the butted ends of the belt body are integrated by welding, and the cage is one end in the axial direction. The structure which has the protrusion piece part protruded from the circumferential direction part of a part can be employ | adopted.

  Since the cage having this configuration has the protruding piece at one end in the axial direction, when the cage is assembled to the one-way clutch, the assembled direction of the cage can be easily determined.

  Moreover, the structure which made the said protrusion piece part be located in the axial direction outer side rather than the axial direction one end part of the said holder | retainer is employable. In this configuration, it is possible to prevent erroneous assembly by performing assembly so that the protruding piece portion does not interfere with the counterpart member with respect to the shape of the counterpart member assembled in the axial direction with respect to the one-way clutch.

  The retainer includes an outer retainer disposed near the outer ring and an inner retainer disposed near the inner ring, and the protruding piece projects in an axial direction with respect to one axial end of the outer retainer. Such a configuration can be adopted.

  The retainer includes an outer retainer disposed closer to the outer ring and an inner retainer disposed closer to the inner ring, and the protruding piece portion is in a radial direction with respect to one axial end portion of the inner retainer. It is possible to adopt a configuration that protrudes inward.

  According to the above configuration, since the sprag is held in each of the pocket portion of the outer cage and the pocket portion of the inner cage, the posture is stabilized. In addition, the outer cage or the inner cage can be selected as the cage having the protruding piece portion, and can correspond to the shape of the mating member assembled in the axial direction with respect to the one-way clutch.

  According to the present invention, since the cage has a protruding piece at one end of the annular body in the axial direction, it is possible to easily determine the assembling direction of the cage when assembling with the protruding piece.

The partially cutaway front view of the one-way clutch of the first embodiment of the present invention Perspective view of the same outer cage The principal part expansion perspective view of an outside holder same as the above Perspective view of the inner cage Ribbon spring partly cutaway perspective view (A) Schematic which shows the correct assembly | attachment state with respect to the other member of the one-way clutch same as the above, (b) Schematic which shows the incorrect assembly state with respect to the other member of the one-way clutch same as the above. Partially cutaway front view of a one-way clutch according to a second embodiment of the present invention Perspective view of the same outer cage Perspective view of the inner cage (A) Schematic which shows the correct assembly | attachment state with respect to the other member of the one-way clutch same as the above, (b) Schematic which shows the incorrect assembly state with respect to the other member of the one-way clutch same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a sprag type one-way clutch 1 (hereinafter simply referred to as “clutch 1”) according to the first embodiment includes an outer ring 2 having an inner circumferential raceway surface 2a and an outer raceway that is disposed in the outer ring 2. An inner ring 3 having a surface 3a and a sprag 4 disposed between the outer ring 2 and the inner ring 3 and transmitting torque between the inner circumferential raceway surface 2a and the outer circumferential raceway surface 3a are provided.

  Furthermore, the clutch 1 urges the sprags 4 in the direction of engaging the inner peripheral raceway surface 2a and the outer peripheral raceway surface 3a in order to urge the sprags 4 at equal intervals along the circumferential direction. And a ribbon spring 6 that is an elastic member disposed between the inner ring 3 and the outer ring 2.

  The clutch 1 of this embodiment includes an outer cage 7 disposed near the outer ring 2 and an inner cage 8 disposed near the inner ring 3 as the cage 5, and the outer cage 7 and the inner cage 8. A sprag synchronization type one-way clutch in which a ribbon spring 6 is disposed between the two is provided. The application is a torque converter in an automatic transmission such as an automobile, but it can be used for various purposes other than a torque converter and an automatic transmission.

  The outer ring 2 has a cylindrical shape, and an inner circumferential raceway surface 2a which is a cylindrical surface is formed on the inner circumferential surface portion. A plurality of axial grooves 2b are formed in the outer peripheral surface of the outer ring 2 at intervals in the circumferential direction. In addition, the shape of the outer peripheral surface part of the outer ring | wheel 2 in which the ditch | groove 2b was formed is an example, Comprising: It is not restricted to this, Other shapes may be sufficient and the shape is not ask | required.

  The inner ring 3 has a cylindrical shape and is arranged on the radially inner side of the outer ring 2. The inner ring 3 includes an outer peripheral raceway surface 3a that is a cylindrical surface formed on the outer peripheral surface portion, and a spline 3b formed on the inner peripheral surface portion.

  As shown in FIGS. 2 and 3, a plurality of outer cages 7 are stretched between a pair of annular ends 9, 10 parallel to the axial direction of the clutch 1 and the annular ends 9, 10. A column portion 11 is provided.

  Each column part 11 is arrange | positioned at equal intervals along the circumferential direction around the axial center of the clutch 1 between the annular end parts 9 and 10. FIG. A space between the column portions 11 and 11 adjacent to each other in the circumferential direction penetrates in the radial direction to form a pocket portion 12 that accommodates the sprag 4.

  A radially outward projecting portion 13 is formed at the central portion of each column portion 11, that is, at the central portion of the column portion 11 in the axial direction of the clutch 1. Each projecting portion 13 has a circumscribed circle of an outer diameter portion slightly larger than the inner diameter of the outer ring 2.

  The outer cage 7 is arranged between the outer ring 2 and the inner ring 3, and the respective protrusions 13 are restricted from rotating with respect to the inner raceway surface 2 a of the outer ring 2 by frictional resistance. Yes.

  Further, the outer cage 7 is made of a metal band having a hole for the pocket portion 12 and a projection 13 formed by press working, and the butted ends of the circular band are integrated by welding. It consists of an annular body.

  Here, the belt body as the material of the outer cage 7 has symmetrical shapes on both sides with respect to the center line in the width direction. For this reason, the band body has the same bending rigidity in both side portions, and the end surfaces of the butted ends are made to coincide with each other, and it becomes easy to form an annular body by welding.

  As shown in FIG. 4, the inner cage 8 includes a pair of annular end portions 14 and 15 arranged in parallel along the axial direction of the clutch 1, and a plurality of pillar portions spanned between the annular end portions 14 and 15. 16. The inner retainer 8 has an outer peripheral surface of a cylindrical surface due to the annular end portions 14 and 15 and the plurality of column portions 16.

  The respective column portions 16 are arranged between the annular end portions 14 and 15 at equal intervals around the axis of the clutch 1 along the circumferential direction. A space between the column portions 16 and 16 adjacent to each other in the circumferential direction penetrates in the radial direction to form a pocket portion 17 that accommodates the sprag 4.

  Further, the inner cage 8 includes a plurality of projecting piece portions 8a projecting radially inward from one annular end portion 14. A plurality of protruding piece portions 8a are arranged at equal intervals in the circumferential direction with respect to one annular end portion 14 (arranged at four locations in FIG. 4).

  The protruding piece portion 8a is formed to be curved radially inward from the axially outer end portion of one annular end portion 14 toward the axially outer side. The protruding piece portion 8 a is located on the outer side in the axial direction than the outer end portion in the axial direction of the one annular end portion 14. The radially inner end of the protruding piece 8a is located radially outside the outer raceway surface 3a of the inner ring 3 (see FIG. 1).

  The inner cage 8 is made of a metal band having a hole for the pocket portion 17 and a protruding piece 8a formed by pressing, and the butted end of the circular band is integrated by welding. Made of an annular body.

  Here, the shape of each side part except the protrusion piece part 8a is symmetrical with respect to the width direction center line as for the strip | belt body as a raw material of the inner side holder | retainer 8. FIG. A plurality of protruding piece portions 8a are arranged only in a part in the circumferential direction with respect to one annular end portion 14 of the inner cage 8 made of an annular body.

  Due to the arrangement of the protruding piece 8a, the band as the material of the inner cage 8 has a smaller difference in bending rigidity between the two side portions with respect to the center line in the width direction, and the end surfaces of the butted ends coincide with each other. Thus, it becomes possible to form an annular body by welding.

  In addition, each protrusion piece part 8a is not arrange | positioned with respect to one cyclic | annular end part 14 at the welding part (butting | matching end of a strip | belt body) in the cyclic | annular body of the inner side holder | retainer 8. FIG. Further, the annular end portions 14 and 15, the plurality of column portions 16 and the protruding piece portion 8a have the same thickness.

  The circumferential length of the protruding piece 8 a is set to be smaller than the interval between the adjacent pillars 16 and 16 and larger than the circumferential width of the pillar 16.

  When the length of the protruding piece portion 8a in the circumferential direction is equal to or greater than the interval between the adjacent column portions 16 and 16, when the belt body that is the material of the inner cage 8 is formed into an annular body, The difference in bending rigidity between the two side portions becomes large, and it becomes difficult to perform welding in a state where the end faces of the butted ends of the belts are matched.

  On the other hand, if the length in the circumferential direction of the protruding piece portion 8a is equal to or less than the circumferential width of the column portion 16, it is difficult to ensure the bending strength of the protruding piece portion 8a with respect to the one annular end portion 14.

  The ribbon spring 6 is disposed between the outer cage 7 and the inner cage 8 as shown in FIGS. The ribbon spring 6 has a ladder shape similar to that of the cage 5, and a pair of annular portions 18, 18 juxtaposed along the axial center direction of the clutch 1, and between the annular portions 18, 18 around the axial center. And a plurality of column portions 19 spanned at equal intervals along the circumferential direction.

  Further, the space between the column portions 19 adjacent to each other in the circumferential direction penetrates from the inner diameter side to the outer diameter side, and is inserted into the pocket portion 12 of the outer cage 7 and the pocket portion 17 of the inner cage 8. This is a sprag receiving hole 20 that can accommodate the.

  Further, each sprag receiving hole 20 is provided with a tongue piece portion 21 that protrudes into the sprag receiving hole 20 from a column portion 19 disposed near the other end of the sprag receiving hole 20. The tongue piece portion 21 protrudes from the column portion 19 into the sprag receiving hole 20, abuts against the side surface of the sprag 4, and biases the sprag 4 in the direction of engagement with the outer ring 2 and the inner ring 3.

  The ribbon spring 6 uses a band body made by stamping a thin metal plate as shown in FIG. 5, and this band body has one end 6a in the length direction and the other end 6b in the length direction. It is formed in a ring shape by rounding it over. If there is no problem in terms of manufacturing process and strength, a ribbon spring using a band made of a material other than a metal plate can be used.

  The annular portions 18 and 18 are formed with corrugated portions 18a that are recessed toward the inner diameter side in a ring shape, and the rigidity of these portions is increased. The tongue piece 21 is also formed with a corrugated portion 21 a similar to the corrugated portion 18 a of the annular portion 18.

  One end sprag accommodation hole 20a, which is the sprag accommodation hole 20 arranged closest to the one end 6a, is arranged on the one end 6a side (left side in FIG. 5) in the length direction of the ribbon spring 6 before forming the ring shape. Yes. The shape and size of the one end sprag receiving hole 20a are the same as the other sprag receiving holes 20.

  On the other end 6b side in the length direction (the right side in FIG. 5), the other end that faces the edge of the other end 6b and overlaps with a portion near one end of the one end sprag receiving hole 20a when formed in a ring shape. An opening 22 is arranged.

  The other end opening 22 is opened to the end edge of the other end 6b of the ribbon spring 6, and the shape of the other end opening 22 is that the pair of protruding members 22a protrudes from the column 19 on the other end side toward the other end. Thus, a gap between the pair of protruding members 22a is a recess recessed toward the one end 6a side.

  When the ribbon spring 6 is rolled into a ring shape, both ends of the ribbon spring 6 are overlapped so that one end 6a in the length direction is on the inner diameter side and the other end 6b in the length direction is on the outer diameter side. Yes.

  Thus, since the other end opening 22 of the ribbon spring 6 is rounded so as to be positioned on the outer diameter side with respect to the one end sprag receiving hole 20a side, as shown in FIG. The 20a side is not pressed against the outer diameter side and can maintain a state close to a perfect circle as a whole.

  Thereby, the sprag 4 accommodated in the one-end sprag accommodating hole 20 a can receive a moment from the tongue piece portion 21 of the ribbon spring 6 to the same extent as the other sprags 4. Therefore, the moment received by all the sprags 4 can be stabilized, and the circumferential performance of the clutch 1 can be made uniform.

  Note that the tongue piece portion 21 provided in the sprag receiving hole 20 protrudes from the column portion 19 disposed near the other end 6 b of the sprag receiving hole 20 to the middle toward the sprag receiving hole 20. It has been. For this reason, the tongue piece portion 21 is not interposed in the overlapping portion of the one end portion 6a in the length direction and the other end portion 6b in the length direction.

  The one-way clutch of the first embodiment has the above-described structure, and the sprags 4 held by the outer cage 7 and the inner cage 8 change the posture according to the mutual rotation directions of the outer ring 2 and the inner ring 3. It has become.

  When the sprag 4 is engaged with the inner raceway surface 2a of the outer ring 2 and the outer raceway surface 3a of the inner ring 3, the relative rotation between the inner ring 3 and the outer ring 2 is prevented, and the engagement of the sprag 4 is released. Then, the inner ring 3 and the outer ring 2 are switched so as to allow relative rotation.

  When the inner cage 8 is assembled to the clutch 1, the clutch 1 prevents the relative rotation between the inner ring 3 and the outer ring 2 by the protruding piece 8 a or the relative rotation between the inner ring 3 and the outer ring 2. It is possible to easily determine the assembling direction that is allowed.

  As shown in FIG. 6A, in the clutch 1, an annular mating member 30 that rotates integrally with the inner ring 3 is fitted to the outer peripheral portion of the inner ring 3. The mating member 30 has a boss 31 on one side in the axial direction on the inner periphery.

  The inner ring 3 of the clutch 1 is fitted to the inner peripheral part of the mating member 30 having the boss part 31 by the following procedure.

  That is, first, the boss portion 31 of the mating member 30 is brought into a state of facing the clutch 1. Thereafter, the inner ring 3 is fitted to the inner peripheral portion of the mating member 30 in a state where the protruding piece 8 a of the inner cage 8 is positioned on the opposite side in the axial direction with respect to the mating member 30.

  By this procedure, the interference of the protruding piece 8a of the inner cage 8 with the mating member 30 can be prevented.

  If the protruding piece 8a of the inner cage 8 faces the mating member 30, the projecting piece 8a of the inner cage 8 with respect to the boss 31 of the mating member 30 as shown in FIG. Will interfere.

  As described above, the clutch 1 can be assembled so that the mating member 30 does not interfere with the shape of the mating member 30 to be assembled to the clutch 1 by the protruding piece portion 8a of the inner cage 8, thus preventing erroneous assembly. be able to.

  In addition, although the protrusion piece part 8a is located in the axial direction outer side rather than the axial direction outer end part of the one cyclic | annular end part 14, the inner side holder | retainer 8 in this embodiment is not restricted to this. The protruding piece 8a only has to protrude radially inward from the axial end of one annular end 14 of the inner cage 8. Even in this case, the assembling direction of the cage 5 to the clutch 1 can be easily determined by the protruding piece 8a.

  A one-way clutch according to a second embodiment of the present invention will be described with reference to FIGS. This embodiment differs from the first embodiment described above in that the inner cage 8 does not have the protruding piece portion 8a, and the outer cage 7 has the protruding piece portion 7a in one annular end portion 9. To do. The other structure is considered to be the same as that of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 8, the outer cage 7 of the cage 5 in this embodiment has a plurality of protruding piece portions 7 a that project outward in the axial direction at one annular end portion 9. The protruding piece portions 7 a are arranged at equal intervals in the circumferential direction with respect to the one annular end portion 9.

  Further, the outer cage 7 is made of a metal belt having a hole for the pocket portion 12 formed by pressing, a protruding piece 7a, and a protruding portion 13 as a raw material, and a butt end of the circular belt is formed. It consists of an annular body integrated by welding.

  Here, the belt body as the material of the outer cage 7 has symmetrical shapes on both side portions excluding the protruding piece 7a with respect to the center line in the width direction. Further, a plurality of protruding piece portions 7a are arranged only in a part in the circumferential direction with respect to one annular end portion 9 of the outer cage 7 made of an annular body.

  With such an arrangement of the protruding piece 7a, the band as the material of the outer cage 7 has a small difference in bending rigidity between the two side portions with respect to the center line in the width direction, and the end surface of the butt end is reduced. It becomes possible to make it an annular body by welding.

  In addition, each protrusion piece part 7a is not arrange | positioned with respect to one cyclic | annular end part 9 in the welding part (butting | matching end of a strip | belt body) in the cyclic | annular body of the outer side holder | retainer 7. FIG. Further, the annular end portions 14 and 15 and the protruding piece portion 7a have the same thickness.

  The length in the circumferential direction of the protruding piece 7 a is set to be smaller than the interval between the adjacent column parts 11 and 11. When the length of the protruding piece portion 7a in the circumferential direction is equal to or greater than the interval between the adjacent column portions 11, 11, when the belt body, which is the material of the outer cage 7, is formed into an annular body, the width direction center line of the belt body The difference in bending rigidity between the two side portions becomes large, and it is difficult to perform welding with the end surfaces of the butted ends of the belts being matched.

  As shown in FIG. 9, the inner cage 8 includes a pair of annular end portions 14 and 15 arranged in parallel along the axial direction of the clutch 1, and a plurality of pillar portions spanned between the annular end portions 14 and 15. 16. The pair of annular end portions 14 and 15 have curved portions 14a and 15a that are curved radially inward over the entire circumference from the axially outer portion (see FIG. 10A).

  The inner cage 8 is made of a metal band having a hole for the pocket portion 17 and curved portions 14a and 15a formed by pressing, and the butted ends of the circular band are integrated by welding. It consists of an annulus.

  Here, the belt body as the material of the inner cage 8 has symmetrical shapes on both sides with respect to the center line in the width direction. For this reason, the band body has the same bending rigidity at both side portions with respect to the center line in the width direction, and the end surfaces of the butted ends are made coincident to be easily formed into an annular body by welding.

  In addition, the inner side holder | retainer 8 may shape | mold the curved parts 14a and 15a, after making a belt | band | zone into an annular body.

  The one-way clutch of the second embodiment has the above-described structure. When the outer cage 7 is assembled to the clutch 1, the assembly direction of the cage can be easily determined by the protruding piece portion 7a of the outer cage 7. it can.

  In the clutch 1, as shown in FIG. 10A, an annular mating member 30 that rotates integrally with the inner ring 3 is fitted to the outer peripheral portion of the inner ring 3. The mating member 30 has a circumferential groove 32 into which the protruding piece 7 a of the outer cage 7 is inserted on the surface facing the clutch 1.

  If the protruding piece 7a of the outer cage 7 is arranged on the opposite side in the axial direction with respect to the mating member 30, the projecting piece 7a of the outer cage 7 becomes the mating member as shown in FIG. 30 and the counterpart member 30 protrudes outward in the axial direction.

  As described above, the clutch 1 can be assembled so that the mating member 30 does not interfere with the shape of the mating member 30 to be assembled to the clutch 1 by the protruding piece portion 7a of the outer cage 7, thereby preventing erroneous assembly. be able to.

1 Clutch (sprag type one-way clutch)
2 outer ring 2a inner raceway surface 2b concave groove 3 inner ring 3a outer raceway surface 3b spline 4 sprag 5 cage 6 ribbon spring 6a one end 6b other end 7 outer cage 7a projecting piece 8 inner cage 8a projecting piece 9 10, 14, 15 Annular end portions 14a, 15a Curved portions 11, 16 Column portions 12, 17 Pocket portion 13 Projection portion 18 Annular portion 18a Wave portion 19 Column portion 20 Sprag accommodation hole 20a One end sprag accommodation hole 21 Tongue piece portion 21a Corrugated portion 22 Other end opening 22a Projecting member 30 Mating member 31 Boss portion 32 Circumferential groove

Claims (4)

An outer ring having an inner raceway surface, an inner ring having an outer raceway surface disposed in the outer ring, and a torque between the outer raceway surface and the inner circumference raceway surface disposed between the outer ring and the inner ring. A sprag for transmitting, a retainer having a plurality of pocket portions for holding the sprag at intervals along the circumferential direction, and a ribbon spring disposed between the inner ring and the outer ring for biasing the sprag In the one-way clutch with
The one-way clutch characterized in that the retainer is formed of an annular body in which a butted end of a belt body is integrated by welding, and the retainer has a protruding piece portion protruding from a part of the circumferential direction of one end portion in the axial direction.   2. The one-way clutch according to claim 1, wherein the protruding piece portion is positioned on an outer side in the axial direction than one axial end portion of the cage.   The retainer includes an outer retainer disposed near the outer ring and an inner retainer disposed near the inner ring, and the protruding piece projects in an axial direction with respect to one axial end of the outer retainer. The one-way clutch according to claim 1 or 2, wherein the one-way clutch is configured as described above.   The retainer comprises an outer retainer disposed near the outer ring and an inner retainer disposed near the inner ring, and the protruding piece portion is radially inward with respect to one axial end portion of the inner retainer. The one-way clutch according to claim 1, wherein the one-way clutch is protruded into the one-way clutch.

Images