JP2010054042A5 - - Google Patents

Description

One-way clutch and manufacturing method thereof

  The present invention relates to a one-way clutch incorporated in a starter motor type starting device such as a motorcycle or a power transmission device of various machines and an improvement of a manufacturing method thereof. In particular, the present invention provides a structure and manufacturing method that can easily and accurately manufacture an outer diameter side member constituting a one-way clutch, and further, a one-way clutch having such a structure to various devices as described above. The present invention realizes a structure and a manufacturing method capable of easily performing the assembling work.

  The incorporation of a one-way clutch into a starter motor type starting device or the like such as a motorcycle has been conventionally performed as described in, for example, Patent Documents 1 to 9. Of these, Patent Document 1 describes a power transmission structure between an engine and a starter of a motorcycle as shown in FIG. The rotation of the rotating shaft 2 of the cell motor 1 is transmitted to the crankshaft 5 through the gear transmission mechanism 3 and the one-way clutch 4. The piston 6 of the engine is driven by the rotation of the crankshaft 5 and the engine is started. The one-way clutch 4 transmits the rotation of the output shaft 8 to the crankshaft 5 when the output shaft 8 fixed to the large gear 7 constituting the gear mechanism 3 is rotated by the start of the cell motor 1. . On the other hand, no power is transmitted between the output shaft 8 and the crankshaft 5 after the engine is started.

  A specific structure of the one-way clutch operating as described above will be described. 60 to 61 are described in Patent Document 2 out of the above-mentioned Patent Documents, and show a first example of a conventional structure of a one-way clutch. The one-way clutch 4 a includes an outer ring 9, an inner diameter side member 10, a plurality of rollers 11, 11, the same number of springs 12, 12 as the rollers 11, 11, and a cover 13. Of these, the outer ring 9 is connected to, for example, the crankshaft 5 described above, and has recessed portions 14 and 14 that are recessed radially outward at a plurality of locations in the circumferential direction on the inner circumferential surface. Yes. The inner diameter side member 10 is connected to, for example, the output shaft 8 and is disposed on the inner diameter side of the outer ring 9. The rollers 11 and 11 and the springs 12 and 12 are disposed in the recessed portions 14 and 14, respectively. Therefore, in the case of the first example of the conventional structure, each of the recessed portions 14 and 14 corresponds to a pocket. The cover 13 covers the recessed portions 14 and 14 so that the rollers 11 and 11 and the springs 12 and 12 do not fall off the recessed portions 14 and 14.

  Further, the back surfaces of the recessed portions 14 and 14 are cam surfaces 15 and 15, respectively. And the space | interval of these cam surfaces 15 and 15 and the outer peripheral surface of the said internal diameter side member 10 is made small so that it goes to the circumferential direction one side (counterclockwise direction of FIG. 60, 61). Each of the springs 12 and 12 is configured such that each of the rollers 11 and 11 has a small interval in a state where one end is in contact with one side surface in the circumferential direction of the concave portions 14 and 14 where the interval is increased. It is pressing in the direction. That is, one side surface in the circumferential direction of each of the recessed portions 14 and 14 is a receiving portion that can support the elastic force of each of the springs 12 and 12, respectively.

  The one-way clutch 4a configured as described above operates as follows. That is, when the inner diameter side member 10 tends to rotate relative to the outer ring 9 in the counterclockwise direction of FIGS. 60 and 61, the rollers 11 and 11 It bites into a portion where the distance between the cam surfaces 15 and 15 is small. As a result, the inner diameter side member 10 and the outer ring 9 are locked, and power is transmitted between the inner diameter side member 10 and the outer ring 9. On the other hand, when the inner diameter side member 10 tends to rotate relative to the outer ring 9 in the clockwise direction in FIGS. 60 and 61, the rollers 11 and 11 are directed toward the portion where the interval is large. It tends to be displaced. As a result, the inner diameter side member 10 and the outer ring 9 are overrun, and no power is transmitted between the inner diameter side member 10 and the outer ring 9.

  On the other hand, FIG. 62 shows a second example of a conventional structure of a one-way clutch described in Patent Document 5. In the case of the second example of this conventional structure, the outer ring 9a is made of sheet metal. That is, a plurality of circumferential portions of the outer peripheral edge of the annular portion (not shown) constituting the outer ring 9a are bent into partial cylindrical portions 36 and 36, and intermediate portions of these partial cylindrical portions 36 and 36 are respectively radially inward. The cam surfaces 15a and 15a are formed by bending in the direction. A retainer 16 for retaining the rollers 11 and 11 and the springs 12a and 12a is disposed on the inner diameter side of the outer ring 9a. Further, pockets 17 and 17 for arranging the rollers 11 and 11 are formed at a plurality of locations in the circumferential direction of the cage 16. Further, the respective springs 12a, 12a are arranged in the inner portions of the bottomed grooves 18, 18 formed in the circumferential direction for each of the pockets 17, 17, respectively. The springs 12a and 12a apply an elastic force to the rollers 11 and 11 through the pressing rods 19 and 19 inserted through the opening-close portions of the bottomed grooves 18 and 18, respectively. In the case of such a structure shown in FIG. 62, the receiving portions for supporting the elastic force of the springs 12a and 12a are the bottom surfaces of the bottomed grooves 18 and 18, respectively.

  The outer ring 9a and the retainer 16 are coupled by screws 20 and 20. That is, the circular ring part constituting the outer ring 9 a and the part of the retainer 16 removed from the pockets 17, 17 are connected by the screws 20, 20. The one-way clutch 4b as described above operates as follows. That is, when the inner diameter side member 10a disposed on the inner diameter side of the cage 16 tends to rotate relative to the outer ring 9a in the clockwise direction of FIG. 62, the inner diameter side member 10a and the outer ring 9a Power is transmitted to and from. On the other hand, when the inner diameter side member 10a tends to rotate relative to the outer ring 9a in the counterclockwise direction of FIG. 62, power is transmitted between the inner diameter side member 10a and the outer ring 9a. Will not be performed.

  In the case of the first and second examples of the conventional structure of the one-way clutch configured as described above, the manufacturing cost of the one-way clutch increases due to the following reasons. First, in the case of the first example of the conventional structure shown in FIGS. 60 to 61, the cylindrical member made of metal is punched to form the recessed portions 14 and 14 in the outer ring 9. In the case of the first example having such a conventional structure, since the rollers 11 and 11 and the springs 12 and 12 are disposed in the recessed portions 14 and 14, the depths of the recessed portions 14 and 14 are large. For this reason, when these recesses 14 and 14 are formed by punching in a single process, the stress during molding increases, and it is difficult to form these recesses 14 and 14 with high accuracy. Further, since each of the recessed portions 14 and 14 is formed by punching, a fracture surface is generated on the cam surfaces 15 and 15 provided on the inner surface of the recessed portions 14 and 14. For this reason, it is difficult to ensure the processing accuracy of the cam surfaces 15 and 15.

  On the other hand, in order to form the respective recessed portions 14 and 14 and the respective cam surfaces 15 and 15 with high accuracy, the step of punching the recessed portions 14 and 14 is performed in a plurality of times, or after punching. The manufacturing cost increases because it is necessary to sufficiently finish the cam surfaces 15 and 15. On the other hand, in the case of the second example of the conventional structure shown in FIG. 62, it is necessary to form the bottomed grooves 18 and 18 in the retainer 16 in addition to the pockets 17 and 17, which also increases the manufacturing cost.

  Further, in the case of the second example of the conventional structure, the cam surface 15a is formed by bending the intermediate portions of the partial cylindrical portions 36, 36 obtained by bending a plurality of portions on the outer peripheral edge of the annular portion constituting the outer ring 9a. Therefore, the strength and rigidity of the portion where the cam surface 15a is formed are low. For this reason, when a large force is applied to the cam surface 15a from each of the rollers 11, 11, the portion where the cam surface 15a is formed is deformed radially outward and the inner diameter side member 10a to the outer ring 9a. There is a possibility that power transmission is not performed sufficiently. That is, when power is transmitted by the one-way clutch 4b (that is, in the locked state), the rollers 11, 11 are portions where the distance between the cam surface 15a and the outer peripheral surface of the inner diameter side member 10a is narrow. It tends to be displaced toward In this case, forces in directions away from each other act on the cam surface 15a and the outer peripheral surface of the inner diameter side member 10a from the rollers 11, 11. Accordingly, when the strength and rigidity of the portion where the cam surface 15a is formed are low, the portion where the cam surface 15a is formed is easily deformed radially outward by the force acting from the rollers 11 and 11. And when it deform | transforms, it becomes difficult to transmit rotation of the said inner diameter side member 10a to the said outer ring | wheel 9a via each said rollers 11 and 11 (namely, transmission of motive power becomes difficult).

JP 2004-346951 A JP 2003-172377 A Japanese Patent Publication No. 6-65899 Japanese Patent Publication No. 5-82487 Japanese Patent No. 2656313 Japanese Patent Laid-Open No. 2-89824 Japanese Patent No. 2749855 Japanese Patent Publication No. 5-31687 JP-A-60-26822

  In view of the circumstances as described above, the present invention sufficiently secures the strength of the portion where the cam surface of the outer diameter side member is formed, and can easily and accurately manufacture the outer diameter side member. The present invention has been invented to realize a structure and a manufacturing method capable of easily assembling a one-way clutch having such a structure to various devices and reducing the manufacturing cost of the one-way clutch.

Of the one-way clutch and the manufacturing method thereof according to the present invention, the one-way clutch described in claim 1 includes an outer diameter side member, a plurality of (for example, three or more) rollers, and a plurality of (for example, three or more). The elastic member and a cage are provided.
Of these members, the outer diameter side member plastically deforms the inner peripheral surface of a metal cylindrical (annular) member, thereby forming a cam surface that is uneven in the circumferential direction on the inner peripheral surface.
Each of the rollers is disposed at a plurality of locations (for example, three or more locations) in the circumferential direction between the cam surface and the outer peripheral surface of the inner diameter side member disposed inside the outer diameter side member. .
Each elastic member presses each roller in a direction in which the interval between the cam surface and the outer peripheral surface of the inner diameter side member becomes narrower. Examples of such an elastic member include a spring made of a metal or a synthetic resin having elasticity, a plate or wire formed by bending, and rubber.
Further, the retainer is disposed between the outer diameter side member and the inner diameter side member in a state of being coupled to the outer diameter side member, and has a substantially annular shape (in addition to a normal annular shape member). For example, a flat plate portion of a concept including a member in which a protrusion or a recess is formed in any part in the circumferential direction from an annular portion, and a plurality of protrusions. Each of these protrusions protrudes at a plurality of locations in the circumferential direction on one side of the flat plate portion, and each side in the circumferential direction serves as a receiving portion that can support the elastic force of each of the elastic members. Moreover, the part between each said protrusions is made into the pocket for accommodating each said roller and each elastic member.

Further, when the invention described in claim 1 is carried out, it is preferable that, as in the invention described in claim 6 , a cage is made by injection molding of a synthetic resin or, for example, an aluminum alloy or the like. A metal material formed by die molding (die casting, casting) is used.

More preferably, as in the invention described in claim 8 , on the other side surface in the circumferential direction of each protrusion constituting the cage, the inner portion in the radial direction of the cage is located on the other side of the roller. , And projecting pieces projecting into the pockets.
Then, the rollers and the elastic members are disposed in the pockets, and the rollers are pressed against the other side surfaces in the circumferential direction of the protrusions by the elastic force of the elastic members. An outer peripheral surface and each said protrusion are engaged.
This prevents each of these rollers from dropping inward in the radial direction.

More preferably, as in the invention described in claim 9 , a projecting piece projecting toward each roller is formed on a part of one side surface in the circumferential direction of each projecting part constituting the cage. . The amount of protrusion in the circumferential direction of each protrusion is ensured to the extent that each elastic member is not crushed and remains free of room for elastic deformation based on the engagement between each roller and each protrusion.
In this case, preferably, as in the invention described in claim 10 , each projecting piece is formed in a radially inward portion from the center of each roller. And the space | interval of the front-end | tip part of each these protrusions and the circumferential direction other side surface of each protrusion which opposes this front-end | tip part in the circumferential direction is made smaller than the outer diameter of each said roller.

When the present invention is carried out, preferably, as in the invention described in claim 2 , the outer diameter side member is formed from a cylindrical portion having a cam surface on the inner peripheral surface and one axial end portion of the cylindrical portion. It is assumed that an inward flange projecting radially inward is formed integrally.
And each roller and each elastic member are accommodated in each pocket of the cage, and in a state where the outer diameter side member and this cage are combined, each of these rollers and each of the elastic members are connected to the inward flange portion. It arrange | positions between the flat plate part of this holder | retainer.

Further, when carrying out the invention described in claim 2 , preferably, as in the invention described in claim 11 , the inner peripheral surface of the cylindrical portion of the outer diameter side member and the cage of the inward flange portion are arranged. A groove (a relief groove) is formed over the entire circumference in a continuous portion with one side surface on the side. Further, the groove and one side surface of the inwardly facing flange portion are continued (smoothly) so that there is no corner portion.

More preferably, as in the invention described in claim 3 , the outer diameter side member is fitted to the inner peripheral surface of the outer diameter side member in a state having a tightening margin. The member and the cage are coupled.
In this case, preferably, as in the invention described in claim 4 , a slit is provided in the circumferential direction in the radial intermediate portion of each projection.

Further, when the invention described in claim 2 or claim 11 is carried out, preferably, as in the invention described in claim 5 , each protrusion of the cage is provided on the inner peripheral edge of the inward flange portion of the outer diameter side member. By fitting the protruding portion protruding from the end face of the portion with a tightening margin, the outer diameter side member and the cage are coupled.
Alternatively, as in the invention described in claim 6 , by engaging the claw portion protruding from the end face of each protrusion of the cage with the inner peripheral edge portion of the inward flange portion of the outer diameter side member, The radial member and the cage are coupled.

Further, when implementing each of the above-described inventions, preferably, as in the invention described in claim 12, the flat plate portions are disposed at positions separated from the protrusions at a plurality of positions in the circumferential direction of the flat plate portion of the cage. A through-hole that penetrates is formed.
In this case, preferably, each through hole is a long hole in the circumferential direction as in the invention described in claim 13.

Further, when carrying out the invention described in claim 2 or any one of claims 3 to 6 and 11 to 13 quoting this claim 2 (invention in which the outer diameter side member has an inward flange) Preferably, as in the invention described in claim 14, the lubricating oil is placed in the space where each roller exists between the inner peripheral edge of the inward flange portion of the outer diameter side member and the outer peripheral surface of the inner diameter side member. Provide a gap for circulation.

A method for producing a one-way clutch according to claim 15 is the method for producing a one-way clutch according to claim 2 or any one of claims 3 to 6 and 11 to 14 quoting claim 2 . It is a manufacturing method.
In this manufacturing method, first, in a state in which the outer peripheral surface of the metal cylindrical member whose inner diameter is smaller than the diameter of the inscribed circle of the cam surface of the outer diameter side member is constrained, a punch is formed on the portion closer to the inner diameter of the cylindrical member, Push in the axial direction. And the cam surface of the said outer diameter side member is formed in the internal peripheral surface of this cylindrical member. At the same time, by moving the surplus generated at this time to one end side in the axial direction of the cylindrical member, an inwardly facing flange portion protruding radially inward from the cam surface is formed at one end portion of the cylindrical member. Form.
Thereafter, a portion closer to the inner diameter of the inner inwardly facing flange portion is removed to form an inwardly facing flange portion of the outer diameter side member.

Moreover, the manufacturing method of the one-way clutch described in Claim 16 is the manufacturing method of the one-way clutch described in any one of Claims 1, 2, 7-11 , and 12-14 .
First, in a state in which each roller and each elastic member are incorporated between the outer diameter side member and the cage, the outer diameter side member and the cage are coupled to each other by a coupling member, and a one-way clutch assembly is obtained. And
Then, when the one-way clutch assembly is assembled to the inner diameter side member or after the assembly, the coupling member is removed.

Further, when carrying out the invention described in claim 16, it is preferable that, as in the invention described in claim 17, the side plate portion and at least two protruding from one side surface of the side plate portion are used as coupling members. And the arm portion provided at the tip portion of each arm portion.
And while making the said side plate part contact | abut to the side surface of any one member of an outer diameter side member and a holder | retainer, each said arm part is arrange | positioned to the outer diameter side or inner diameter side of these both members, Each flange is engaged with the side surface of the other member.
Thereby, these both members are connected to each other.

Further, when carrying out the invention described in claim 17, it is preferable that at least one of the arms of the coupling member is connected to the outer diameter side as in the invention described in claim 18. It arrange | positions at the internal diameter side of a member and a holder | retainer.
Then, positioning of the coupling member in the circumferential direction is performed so that the arm portion is disposed at a position where the arm portion does not interfere with the rollers disposed in both the members.

As a specific structure to which the invention of the manufacturing method described in claim 18 is applied, for example, as in the invention described in claim 19, the side plate portion of the coupling member is arranged on the side surface of the outer diameter side member. It shall abut.
In addition, a positioning projection that projects in the same direction as each arm is provided on the side plate.
And, by forming the axial projection on the side surface of the outer diameter side member, for example, by screwing or inserting a bolt for assembling to the device, by inserting the positioning protrusion into the screw hole or through hole, The coupling member is positioned in the circumferential direction.

Moreover, the manufacturing method of the one way clutch described in Claim 20 is a manufacturing method of the one way clutch described in any one of Claims 1, 2, 7-11 , 12-14 .
First, elastic protrusions are formed to protrude from the distal end surfaces of at least two protrusions of the protrusions of the cage, and engaging claws are provided on the proximal end portions of the elastic protrusions, respectively.
Further, when the cage is assembled to the outer diameter side member, the inner peripheral edge of the inward flange portion of the outer diameter side member is allowed to pass while elastically deforming the elastic protrusions, and after the passage, the engagement claws are Engage with the radially inner end of the side surface of the inwardly facing flange.
Thereby, the said outer diameter side member and a holder | retainer are connected without separation, and it is set as a one-way clutch assembly.
Then, when the one-way clutch assembly is assembled to the inner diameter side member or after the assembly, the respective elastic protrusions are removed.

Moreover, the manufacturing method of the one way clutch described in Claim 21 is the manufacturing method of the one way clutch described in any one of Claims 1, 2, 7-11 , 12-14 .
First, elastic protrusions are formed to protrude from the tip surfaces of at least two of the protrusions of the cage.
Further, when the retainer is assembled to the outer diameter side member, the elastic protrusions are elastically deformed and the inner peripheral edge of the inward flange portion of the outer diameter side member is allowed to pass. The base end is elastically brought into contact with the inner peripheral surface of the inwardly facing flange.
As a result, the outer diameter side member and the retainer are permanently connected to form a one-way clutch assembly, and the elastic protrusions are formed when or after the one-way clutch assembly is assembled to the inner diameter side member. Remove.

According to the one-way clutch of the present invention configured as described above and the manufacturing method thereof, the strength of the portion of the outer diameter side member formed with the cam surface is sufficiently ensured, and the outer diameter side member can be easily manufactured. It can be performed with high accuracy and the manufacturing cost of the one-way clutch can be reduced.
That is, in the case of the present invention, since the cam surface is formed by plastically deforming the inner peripheral surface of the metal cylindrical member and the outer diameter side member is used, the strength of the portion where the cam surface is formed is sufficiently secured. it can. As a result, for example, even if force is applied to the cam surface from each roller, the portion where the cam surface is formed is prevented from being deformed, and power can be transmitted sufficiently.

  In the case of the present invention, since a pocket for disposing each roller and each elastic member is formed in the cage, it is not necessary to provide such a pocket on the outer diameter side member. Therefore, the unevenness of the inner peripheral surface of this outer diameter side member (the amount of recesses in the radially outward direction) can be reduced. For this reason, the process which carries out plastic deformation of the internal peripheral surface of the cylindrical (annular) member which is a raw material of this outer diameter side member can be performed easily. Further, since the cam surface is formed by plastically deforming the inner peripheral surface of the cylindrical member in this way, a fracture surface as in the case of forming by punching does not occur. For this reason, it is not necessary to finish the cam surface, or only a small amount of finishing is required. As a result, the outer diameter side member can be easily and accurately manufactured.

On the other hand, the cage only needs to be able to support the elastic force of each elastic member, and no large force is applied from each roller. For this reason, the cage does not need to have a higher strength than the outer diameter side member. For example, as in the invention described in claim 7 , the cage is made by injection molding of a synthetic resin or made of an aluminum alloy. Such a metal material such as a light alloy can be easily formed by molding such as casting. In the case of the present invention, one side in the circumferential direction of each protrusion is a receiving part capable of supporting the elastic force of each elastic member, and no bottomed groove for arranging the elastic member is provided. Therefore, the manufacturing cost of the cage can be reduced.
Thus, since the outer diameter side member and the cage can be easily obtained, the manufacturing cost of the one-way clutch can be reduced.

According to the invention described in claim 8 , each roller is pressed against the other circumferential surface of each protrusion by the elastic force of each elastic member, and the outer peripheral surface of each roller and each protrusion are engaged. In order to
On the other hand, according to the invention described in claim 10 , since the interval between the circumferential surface other side of each projection piece and each projection is smaller than the outer diameter of each roller,
It is possible to prevent each roller and each elastic member from falling out of each pocket before disposing the inner diameter side member on the outer diameter side member and the inner diameter side of the cage. For this reason, the inner diameter side member can be easily assembled.

According to the ninth aspect of the present invention, when the one-way clutch is overrun, each roller moves in the direction of pressing each elastic member. At this time, the amount of movement of each roller is provided in each protrusion. It is regulated by the protruding piece. For this reason, it is possible to prevent the elastic members from being excessively elastically deformed by being pressed by the rollers, and to prevent the elastic members from sagging or being damaged at an early stage.

Further, in the case of the invention described in claim 2 , since the inwardly facing flange portion is formed integrally with the cylindrical portion having the cam surface, the strength of the outer diameter side member is improved, and the portion where the cam surface is formed is More difficult to deform. In addition, since each roller and each elastic member are disposed between the inward flange portion and the annular ring portion of the cage, each roller and each elastic member is not provided with a cover or the like separately. It can be prevented from falling out of each pocket of the cage.

According to the eleventh aspect of the present invention, since the groove is formed in the continuous portion between the inner peripheral surface of the cylindrical portion of the outer diameter side member and one side surface of the inwardly facing flange portion, the edge portion of each roller is It is possible to prevent edge load from occurring due to local contact, and to extend the life of the one-way clutch.
In addition, since the groove and one side surface of the inwardly facing portion are continuous so that there is no corner, the groove is formed when the outer diameter side member is formed by plastic deformation with a tool such as a punch. Therefore, it is possible to suppress the stress generated in the protrusion provided on the tool. As a result, the moldability of the outer diameter side member can be improved and the durable life of the tool can be improved.

According to the invention described in claims 3 to 6 , the outer diameter side member and the cage are not separated from each other in a state where the rollers and the elastic members are incorporated between the outer diameter side member and the cage. These members can be unitized. Therefore, it is possible to prevent the separation of these members before delivery of the product, and the assembly to the inner diameter side member is facilitated. Further, since the above members are unitized, no special attachment (joining member) is required, and the cost does not increase.
In addition, if each protrusion is provided with a slit as in the invention described in claim 4 , when the protrusion is fitted in a cage with a tightening margin, the protrusion is bent. This can be done easily, and this fitting operation becomes easy.

According to the twelfth aspect of the present invention, the lubricating oil can be easily circulated through each through hole in each pocket.
Further, according to the invention described in claim 13, since each of the through holes is formed long in the circumferential direction, the area of each through hole can be reduced even if the radial dimension of each of the through holes is reduced. It can be secured. Thus, if the radial dimension of each through hole can be reduced, the radial dimension of the cage can also be reduced. In other words, it is not necessary to increase the radial dimension of the cage in order to secure the area of each through hole necessary for the circulation of the lubricating oil.
According to the fourteenth aspect of the present invention, the lubricating oil is circulated into each pocket through the gap between the inward flange portion and the inner diameter side member even if the inward flange portion is present in the outer diameter side member. It becomes easy to let.

  According to the manufacturing method described in claim 15, the outer diameter side member of the one-way clutch having the above-described structure can be obtained easily and accurately. That is, the cylindrical portion constituting the outer diameter side member merely forms a cam surface on the inner peripheral surface, and does not need to provide a pocket for storing each roller and each spring. For this reason, only the cam surface is formed on the inner peripheral surface of the cylindrical portion, and the size of the concavities and convexities (the amount of recesses in the radially outward direction) is smaller than these pockets. Therefore, the stress at the time of molding the outer diameter side member can be reduced, and the cam surface can be formed with high accuracy by pressing the punch once. In addition, the inner inwardly facing part can be formed simultaneously with the formation of the cam surface, and then the inwardly facing part can be obtained simply by removing the portion closer to the inner diameter of the inner inwardly facing part. Therefore, in the case of the manufacturing method described in claim 15, the number of processing steps for forming the outer diameter side member can be reduced, and the manufacturing cost can be kept low.

Further, according to the manufacturing method described in claims 16 to 21, in a state where each roller and each elastic member are incorporated between the outer diameter side member and the cage, the outer diameter side member and the cage are connected. These members can be united and can be unitized. Therefore, it is possible to prevent the separation of these members before delivery of the product, and the assembly to the inner diameter side member is facilitated.
In the case of the invention described in claims 18 and 19, at least one arm portion of the coupling member is arranged on the outer diameter side member and the inner diameter side of the cage, instead of the circumferential direction of the arm portion. The position is regulated to prevent this arm from interfering with each roller. As a result, it is possible to prevent each roller and each elastic member from being damaged or displaced from a predetermined position during unitization.

[First example of embodiment]
1 to 10 show a first example of an embodiment of the present invention corresponding to claims 1, 2 , 7 , and 15. FIG. The one-way clutch 4c of this example includes an outer ring 9b that is an outer diameter side member, a plurality of rollers 11 and 11, a plurality of springs 12b and 12b that are elastic members, and a cage 16a. As shown in FIGS. 4 and 5, the outer ring 9b includes a cylindrical portion 21 having a cam surface 15b which is a concave and convex portion extending in the circumferential direction on the inner peripheral surface, and one axial end portion of the cylindrical portion 21 {FIG. , Right end portion of FIG. 4B} and an inward flange portion 22 protruding radially inward. The cylindrical portion 21 and the inward flange portion 22 are integrally formed. In the case of this example, the inward flange portion 22 is formed over the entire circumference. For example, each roller 11, 11 and each spring 12b, 12b, which will be described later, and a screw You may form intermittently in the part corresponding to the location couple | bonded by 28,28.

  In addition, concave portions 25 and 25 that are recessed radially outward are formed at a plurality of circumferential locations (three locations in this example) on the inner circumferential surface of the cylindrical portion 21. Each of the recesses 25 and 25 has a depth (amount of recesses radially outward) in one circumferential direction {counterclockwise in FIGS. 1, 4 (A), 10 (A)}. It's deeper as you go. Thus, the inner peripheral surface of the cylindrical portion 21 is the cam surface 15b. Therefore, in a state where the inner diameter side member 10b is disposed on the inner diameter side of the outer ring 9b, the distance between the cam surface 15b and the outer peripheral surface of the inner diameter side member 10b increases toward one side in the circumferential direction. Such a cam surface 15b is formed by performing plastic working on the inner peripheral surface of a metal cylindrical member (annular member) 31 {FIGS. 8 and 9 (A)}, which will be described later, such as bearing steel. Yes. As shown in FIG. 6, the cam surface 15b may be formed by projecting a plurality of locations in the circumferential direction on the inner circumferential surface of the cylindrical portion 21 radially inward.

  Each of the rollers 11, 11 has a plurality of circumferential positions between the cam surface 15b and the outer peripheral surface of the inner diameter side member 10b arranged inside the outer ring 9b (in this example, three Place). The springs 12b and 12b are arranged in the same number as the rollers 11 and 11, and the rollers 11 and 11 are arranged in a direction in which the distance between the cam surface 15b and the outer peripheral surface of the inner diameter side member 10b is reduced. , Press each one.

  The retainer 16a is disposed between the outer ring 9b and the inner diameter side member 10b, and has a lower strength than a hard metal such as bearing steel such as a synthetic resin or an aluminum alloy. Made of easy-to-use material. As shown in FIG. 7, the cage 16a has an annular portion 23 corresponding to the flat plate portion described in the claims, and one side surface of the annular portion 23 {right side surface of FIG. 2, FIG. The left side surface of (B) includes projecting portions 24 and 24 projecting at a plurality of locations in the circumferential direction. Moreover, the part between these protrusions 24 and 24 is set as pockets 17a and 17a for storing the rollers 11 and 11 and the springs 12b and 12b. Further, the base end portions of the springs 12b and 12b are arranged on one circumferential side surface (the side surface on the clockwise side in FIG. 1 and the side surface on the counterclockwise side in FIG. 7A) of the protrusions 24 and 24, respectively. The holding parts 26 and 26 for holding the are formed. And the part except the inner diameter side part among the circumferential direction side surfaces of these holding parts 26 and 26 is set as the receiving parts 27 and 27 which can support the elastic force of each said spring 12b and 12b, respectively.

  Accordingly, when the springs 12b and 12b are arranged in the pockets 17a and 17a, the base ends of the springs 12b and 12b are brought into contact with the receiving parts 27 and 27, respectively. Then, in a state where the rollers 11 and 11 and the springs 12b and 12b are arranged in the pockets 17a and 17a, the rollers 11 and 11 are connected to the protrusions 24 and 24 by the springs 12b and 12b. To the other side surface in the circumferential direction {the side surface on the counterclockwise side in Fig. 1 and the side surface on the clockwise side in Fig. 7A}. The cage 16a configured as described above is formed by, for example, injection molding of a synthetic resin or die casting of an aluminum alloy.

  In the case of this example, the outer ring 9b and the retainer 16a are coupled by screws 28 and 28. For this purpose, screw holes 29, 29 are provided in the circumferential intermediate portions of the protrusions 24, 24 of the retainer 16a, and the screw holes 29 are provided at a plurality of positions in the circumferential direction of the inward flange portion 22 of the outer ring 9b. , 29 are formed through holes 30, 30 which are tapered holes, respectively. When the outer ring 9b and the cage 16a are coupled, as shown in FIG. 3, the rollers 11, 11 and the springs 12b, 12b are disposed in the pockets 17a, 17a of the cage 16a. The outer ring 9b and the cage 16a are overlapped. In this state, the screw holes 29, 29 and the through holes 30, 30 are aligned. The screws 28 and 28 are screwed into the screw holes 29 and 29 while being inserted through the through holes 30 and 30 and further tightened. As a result, the outer ring 9b and the cage 16a are coupled with the rollers 11 and 11 and the springs 12b and 12b disposed therein.

  In the case of this example, in a state where the outer ring 9b and the cage 16a are coupled, the rollers 11, 11 and the springs 12b, 12b are connected to the inward flange portion 22 of the outer ring 9b and the circle of the cage 16a. It arrange | positions between the ring parts 23. In other words, both the rollers 11, 11 and the springs 12b, 12b are arranged in the inward direction on both sides of the pockets 17a, 17a in the axial direction {the left-right direction in Figs. 2, 4 (B), 7 (B)}. It is covered by the flange portion 22 and the circular ring portion 23.

  In the case of the one-way clutch 4c of the present example configured as described above, the inner diameter side member 10b is opposed to the outer ring 9b as in the first and second examples of the conventional structure described in FIGS. 1, the rollers 11 and 11 bite into a portion where the distance between the outer peripheral surface of the inner diameter side member 10b and the cam surface 15b is small. As a result, the inner diameter side member 10b and the outer ring 9b are locked, and power is transmitted between the inner diameter side member 10b and the outer ring 9b. On the other hand, when the inner diameter side member 10b tends to rotate relative to the outer ring 9b in the counterclockwise direction of FIG. 1, the rollers 11 and 11 are directed toward a portion where the interval is large. Tend to displace. As a result, the inner diameter side member 10b and the outer ring 9b are in an overrun state, and no power is transmitted between the inner diameter side member 10b and the outer ring 9b.

A manufacturing method of the one-way clutch 4c of this example configured and acting as described above will be described with reference to FIGS.
First, as shown in FIG. 8, a metal cylindrical member 31 whose inner diameter is smaller than the diameter of the inscribed circle of the cam surface 15b of the outer ring 9b is placed on the pedestal 32 as shown in FIG. In the placed state, the outer peripheral surface is restrained by the die 33. In this state, as shown in FIG. 9B, the punch 34 is pushed in the axial direction into the portion near the inner diameter of the cylindrical member 31. The outer peripheral surface of the punch 34 has a shape corresponding to the inner peripheral surface of the cylindrical portion 21 of the outer ring 9b (the cross-sectional outline is the same and the concavities and convexities are reversed). For this reason, the cam surface 15 b of the outer ring 9 b is formed on the inner peripheral surface of the cylindrical member 31 by pushing the punch 34. In the case of this example, the surplus portion near the inner diameter of the cylindrical member 31 generated by the pressing of the punch 34 is moved to one end side (lower end side in FIG. 9) of the cylindrical member 31.

  By moving the surplus portion as described above to one end portion of the cylindrical member 31, one end portion of the cylindrical member 31 protrudes radially inward from the cam surface 15b. A bare inward facing portion 35 is formed. That is, since the outer peripheral surface of the cylindrical member 31 is constrained by the die 33, when the punch 34 is pushed in, as shown in FIG. The slanted lattice portion indicated by) flows to one end portion (a pear ground portion) of the cylindrical member 31. As a result, one end portion of the cylindrical member 31 protrudes inward in the radial direction, and the element inward flange portion 35 is formed. In the case of this example, the other end surface (the upper end surface in FIG. 9) of the cylindrical member 31 is pressed by a pressing member (not shown), and the axial direction of the cylindrical member 31 (FIG. 9) is pushed by the pressing of the punch 34. The thickness in the vertical direction) is not changed. For this reason, the thickness of the cylindrical member 31 is the same as the thickness of the outer ring 9b after processing.

  After processing by the punch 34 as described above, as shown in FIG. 9C, a portion near the inner diameter of the inner inwardly facing flange portion 35 is punched and removed by another punch 34a. The outer diameter of the punch 34a is the same as the inner diameter of the inward flange portion 22 of the outer ring 9b. For this reason, the inner inward flange portion 22 having a predetermined inner diameter is formed by punching out the inner inward flange portion 35 with the punch 34a. As shown in FIG. 3, the outer ring 9b thus obtained is coupled to the retainer 16a with the rollers 11, 11 and the springs 12b, 12b disposed therein, and the one-way clutch 4c. And

According to the one-way clutch 4c of this example configured as described above and the manufacturing method thereof, the strength of the portion where the cam surface 15b of the outer ring 9b is formed is sufficiently secured, and the manufacturing of the outer ring 9b is easy and accurate. The manufacturing cost of the one-way clutch 4c can be reduced.
That is, in the case of this example, the cam surface 15b is formed by plastically deforming the inner peripheral surface of the metal cylindrical member 31, and the outer ring 9b is formed. Therefore, the cam surface 15b is formed as compared with the structure in which the intermediate portion of the partial cylindrical portions 36, 36 is bent to form the cam surface 15a as in the second example of the conventional structure shown in FIG. The strength and rigidity of the part can be sufficiently secured. In this example, since the inward flange portion 22 is formed integrally with the cylindrical portion 21 having the cam surface 15b, the strength and rigidity of the outer ring 9b are improved, and the portion where the cam surface 15b is formed is formed. Can be more difficult to deform. As a result, when power is transmitted from the inner diameter side member 10b to the outer ring 9b, even if a force acts on the cam surface 15b from the rollers 11, 11, the portion where the cam surface 15b is formed is radially outward. Therefore, it is possible to sufficiently transmit power by the one-way clutch 4c.

  In the case of this example, since the retainer 16a is formed with pockets 17a and 17a for disposing the rollers 11, 11 and the springs 12b and 12b, it is necessary to provide such a pocket on the outer ring 9b. Absent. Therefore, it is only necessary to form the cam surface 15b on the inner peripheral surface of the cylindrical portion 21 of the outer ring 9b, and the unevenness of the inner peripheral surface of the cylindrical portion 21 can be reduced. In other words, what is formed on the inner peripheral surface of the cylindrical portion 21 is constituted by the concave portions 25 and 25 having a small size of the concave and convex portions (the amount of change in the inner diameter in the circumferential direction is small) as compared with the pockets 17a and 17a. It is only the cam surface 15b. Therefore, the stress at the time of molding the outer ring 9b can be reduced, and the cam surface 15b can be formed easily and accurately by pushing the punch once.

  In the case of this example, since the cam surface 15b is formed by plastically deforming the inner peripheral surface of the cylindrical member 31, the conventional structure shown in FIGS. 60 to 61 is formed by punching the cam surface. The fracture surface as in the case of the first example does not occur. For this reason, it is not necessary to finish the cam surface 15b, or even if the finishing process is performed. In the case of this example, the inner inward flange portion 35 can be formed simultaneously with the formation of the cam surface 15b, and then the inner inward flange portion 22 can be obtained simply by removing the portion closer to the inner diameter of the inner inward flange portion 35. Accordingly, in the case of this example, the number of processing steps for forming the outer ring 9b can be reduced. As a result, the outer ring 9b can be manufactured easily and accurately at low cost.

On the other hand, the cage 16a only needs to be able to support the elastic force of the springs 12b and 12b, and a large force does not act from the rollers 11 and 11. Therefore, the cage 16a does not need to have a higher strength than the outer ring 9b, and can be easily formed by, for example, molding a synthetic resin or an aluminum alloy. In the case of this example, one side surface in the circumferential direction of each protrusion 24, 24 is a receiving portion 27, 27 capable of supporting the elastic force of each spring 12b, 12b. That is, unlike the second example of the conventional structure shown in FIG. 62, the bottomed grooves 18 and 18 for arranging the springs 12a and 12a are not provided. For this reason, the manufacturing cost of the cage 16a can be reduced.
In the case of this example, the outer ring 9b and the retainer 16a can be easily obtained as described above, so that the manufacturing cost of the one-way clutch 4c can be kept low.

  In the case of this example, the inward flange portion 22 is formed integrally with the outer ring 9b, and the rollers 11, 11 and the springs 12b, 12b are connected to the inward flange portion 22 and the annular portion 23 of the retainer 16a. It is arranged between. Therefore, as in the first example of the conventional structure shown in FIGS. 60 and 61 described above, the rollers 11 and 11 and the springs 12b and 12b can be connected to the cage 16a without providing a cover or the like. It is possible to prevent the pockets 17a and 17a from falling off.

[Second Example of Embodiment]
11 to 18 show a second example of an embodiment of the present invention corresponding to claims 1, 2 , 7 to 9 , and 12 to 15. FIG. Although the structure of the first example described above has been described with respect to a structure in which three rollers 11 and 11 are incorporated, this example is a structure in which six rollers 11 and 11 are incorporated. Accordingly, the recesses 25a and 25a formed on the inner peripheral surface of the outer ring 9c, the protrusions 24a and 24a and the pockets 17b and 17b of the retainer 16b, and the number of the springs 12c and 12c are also six. For this reason, the shape of the inner peripheral surface of the outer ring 9c and the shape of the cage 16b are different from the structure of the first example. Moreover, the structure of each figure of this example is opposite to the structure of FIG. 1 of the first example described above in the circumferential direction. Therefore, in the case of this example, when the inner diameter side member 10c tends to rotate relative to the outer ring 9c in the clockwise direction of FIG. 11, an overrun state occurs and the tendency to rotate relatively counterclockwise in FIG. It becomes locked when it becomes.

  In the case of this example, the shape of the inner peripheral surface (cam surface 15c) of the cylindrical portion 21a constituting the outer ring 9c is substantially hexagonal when viewed from the axial direction as shown in FIG. And each vertex of this hexagon and its peripheral part are made into said each recessed part 25a, 25a. That is, the depth of each of these vertices and their peripheral portions is made deeper toward the respective vertices. Further, the degree of this deepening is gentler on one side in the circumferential direction than the above-mentioned vertices (counterclockwise side in FIGS. It is steep on the other side in the circumferential direction from the apex {clock side in Figs. 11, 14, 16 (A), counterclockwise side in Figs. 13, 17 (A), 18}. In addition, the portions adjacent to each other in the circumferential direction and having different depths in the circumferential direction are smoothly connected to each other. Then, pockets 17b and 17b of the retainer 16b, which will be described below, are arranged in a portion where the depth is deeper in the circumferential direction, and the protrusions 24a and 24a are also arranged in a portion where the depth is deepened. ing.

  In the case of this example, the protrusions 24a, 24a of the cage 16b are respectively provided on one side surface of a substantially annular ring part 23a corresponding to the flat plate part described in the claims. ing. The protrusions 24a and 24a have recesses 37 and 37 formed by recessing the circumferential intermediate portions of both peripheral surfaces. As a result of stress analysis of the cage 16b, these thinning portions 37, 37 are obtained by removing portions with low stress. Therefore, in the case of this example, the presence of the respective thinning portions 37, 37 can reduce the weight of the retainer 16b and reduce the material cost without reducing the strength of the retainer 16b. In the case of the illustrated example, the inner peripheral edge portion of the annular ring portion 23a constituting the cage 16b is a portion that is aligned with the thinning portions 37, 37 formed on the inner peripheral surface side of each of the protrusions 24a, 24a. In addition, notches similar to those of the thinning portions 37 and 37 are formed.

  Further, the other circumferential side surfaces of the protrusions 24a and 24a constituting the cage 16b are bent in the same direction as the bending direction of the outer peripheral surfaces of the rollers 11 and 11, respectively. Then, both ends in the radial direction on the other side surfaces in the circumferential direction are protruded into the pockets 17b and 17b. In the case of this example, these protruding portions are referred to as protruding pieces 38, 38, respectively. Then, as shown in FIG. 14, the rollers 11, 11 and the springs 12c, 12c are arranged in the pockets 17b, 17b, and the rollers 11, 11 are moved by the elastic force of the springs 12c, 12c. These rollers 11 and 11 are sandwiched between the protrusions 38 and 38 in a state of being pressed against the other circumferential surface of the protrusions 24a and 24a.

  In particular, in this state, the diameter of the contact portion between the springs 12c and 12c and the rollers 11 and 11 and the protrusions 38 and 38 is larger than the outer diameter a of the rollers 11 and 11. The distance b between the projecting pieces 38 on the inner side in the direction is made smaller (a> b). Thus, before the inner diameter side member 10c is disposed on the inner diameter side of the cage 16b, the rollers 11 and 11 are prevented from falling off radially inward from the pockets 17b and 17b. . As a result, the inner diameter side member 10c can be easily assembled to the outer ring 9c and the cage 16b. Further, in the case of this example, of the projections 24a and 24a, due to the engagement between the radially outer projections 38 and 38 and the outer peripheral surfaces of the rollers 11 and 11, the rollers 11 and 11 have a diameter. It can also be prevented from falling out of the direction. Therefore, the operation of assembling the retainer 16b to the outer ring 9c is facilitated with the rollers 11 and 11 and the springs 12c and 12c disposed in the pockets 17b and 17b of the retainer 16b.

  Also in this example, the inward flange portion 22a is integrally formed so as to project radially inward from one axial end portion (left end portion in FIGS. 12 and 15) of the cylindrical portion 21a constituting the outer ring 9c. ing. Accordingly, the rollers 11 and 11 and the springs 12c and 12c are accommodated in the pockets 17b and 17b of the cage 16b, and the rollers 11 and 11 are coupled with the outer ring 9c and the cage 16b. 11 and the springs 12c and 12c are disposed between the inward flange portion 22a and the annular ring portion 23a of the cage 16b.

  In the case of this example, as described above, in order to couple the outer ring 9c and the cage 16b, a plurality of circumferential positions on the outer peripheral edge of the annular portion 23a constituting the cage 16b (in the case of the illustrated example) Protrusions 39, 39 projecting radially outward are provided at three locations). And these through-holes 40 and 40 are formed in each of these protrusion parts 39 and 39, respectively. On the other hand, at a plurality of positions in the circumferential direction of the cylindrical portion 21a constituting the outer ring 9c, in a state where the outer ring 9c and the retainer 16b are combined, the positions aligned with the through holes 40 and 40 are as follows. Screw holes 41 and 41 are formed. Then, the outer ring 9c and the cage 16b are coupled by screwing the screws inserted through the respective through holes 40, 40 into the respective screw holes 41, 41 and further tightening.

  Further, in the case of this example, at a plurality of positions in the circumferential direction of the annular portion 23a of the cage 16b, at positions dislocated from the protrusions 24a, 24a (that is, positions aligned with the pockets 17b, 17b), Through holes 42 and 42 penetrating the annular portion 23a are formed. Each of the through holes 42 is a long hole that is long in the circumferential direction. In the case of this example, lubricating oil is circulated in the pockets 17b and 17b through the through holes 42 and 42. In the case of this example, as shown in FIG. 11, a gap 45 exists between the inward flange portion 22a and the inner diameter side member 10c over the entire circumference. That is, the inner diameter of the inward flange portion 22a is sufficiently larger than the outer diameter of the inner diameter side member 10c. For this reason, the presence of the gap 45 makes it easier to distribute the lubricating oil. In the case of this example, since each of the through holes 42 and 42 is formed long in the circumferential direction, each of the through holes 42 and 42 is formed even if the radial dimension of each of the through holes 42 and 42 is reduced. Can be secured. Thus, if the radial dimension of each through-hole 42, 42 can be reduced, the radial dimension of the cage 16b can also be reduced.

  Further, in the case of this example, as shown in detail in FIG. 15, a groove 43 is formed over the entire circumference in a continuous portion between the inner peripheral surface of the cylindrical portion 21a of the outer ring 9c and one side surface of the inward flange portion 22a. Forming. For this reason, it can prevent that the edge part of each said roller 11 and 11 contact | abuts locally, and an edge load arises, and can attain the lifetime of the one-way clutch 4d.

  In the case of this example configured as described above, the outer ring 9c can be manufactured in the same manner as the first example of the above-described embodiment. That is, similarly to the case shown in FIGS. 9A and 9B, the cylindrical member 31 is subjected to predetermined plastic working to obtain an intermediate material 44 as shown in FIG. Then, similarly to the case shown in FIG. 9C, the inner ring portion 35a is punched out by the punch 34a to obtain the outer ring 9c as shown in FIG.

  In addition, as shown in FIG. 19, it is preferable to make the groove | channel 43 and the one side surface of the inward facing part 22a continue with a smooth curved surface so that there may be no corner | angular part. That is, as in the present example, when the groove 43 is provided in a continuous portion between the inner peripheral surface of the cylindrical portion 21a and one side surface of the inward flange portion 22a, the inner diameter side of the cylindrical member 31 is plastically deformed as described above. It is necessary to provide a protrusion over the entire circumference at the peripheral edge of the front end surface of the punch. As shown in FIG. 15 described above, when the groove 43 and the inwardly directed flange 22a are not smoothly continuous (the curvature radius of the continuous portion is extremely small), as a punch, Use one that is not smoothly continuous (pointed) with the inner part of the protrusion. In this case, stress may be concentrated on the protruding portion during processing by the punch, and this protruding portion may cause damage to the punch. On the other hand, as shown in FIG. 19, when the groove 43 and the inward flange portion 22a are smoothly continuous, the protrusion provided on the tip surface of the punch and the inner portion of the protrusion Since the gap can be made smooth, the stress generated in the protrusion during processing can be suppressed. As a result, the moldability of the outer diameter side member can be improved and the durable life of the tool can be improved. Other structures and operations are the same as those in the first example.

[Third example of embodiment]
20 to 23 show a third example of an embodiment of the present invention corresponding to claims 1, 2 , 7 to 11 , and 12 to 15. FIG. In the case of this example, in addition to the structure of the second example described above, each roller on one circumferential side surface (the counterclockwise side surface in FIGS. 20 to 23) of each protrusion 24b, 24b constituting the cage 16c. Second projections 46 and 46 are formed so as to project toward the eleventh and eleventh as compared with the above-described embodiments. Each of these second projecting pieces 46, 46 is formed at the radially inner end of the cage 16c. And the front-end | tip part of each of these 2nd protrusions 46 and 46, and each other side surface of each protrusion 24b, 24b which opposes each of these front-end | tip parts in the circumferential direction (side surface of the clock side of FIGS. 20-23) ) Is formed smaller than the outer diameter D of each of the rollers 11 and 11 (A <D). Furthermore, the amount of protrusion in the circumferential direction of each of the second protrusions 46, 46 is made sufficiently larger than the length when the springs 12c, 12c are fully contracted. Even in a state where the rollers 11 and 11 are displaced toward the springs 12c and 12c until the respective rolling surfaces abut against the leading edges of the second projecting pieces 46 and 46, the springs 12c and 12c are displaced. 12c and 12c are prevented from shrinking.

  In the case of this example configured in this way, as shown in FIGS. 21 to 22, when each roller 11, 11 moves in the direction of pressing each spring 12 c, 12 c during overrun of the one-way clutch, The amount of movement of the rollers 11 and 11 is regulated by the second projecting pieces 46 and 46. For this reason, the springs 12c and 12c are prevented from elastically deforming excessively (to a state where they are not further contracted) by being pushed by the rollers 11 and 11, so that the springs 12c and 12c are brought to an early stage. It can be prevented from being damaged or damaged.

  Since the distance A between each of the second projecting pieces 46, 46 and each of the projecting pieces 38, 38 is smaller than the outer diameter D of each of the rollers 11, 11, as shown in FIG. Before the inner diameter side member 10c is arranged on the inner diameter side of the cage 16c, the rollers 11, 11 and the springs 12c, 12c can be prevented from falling out of the pockets 17b, 17b. For this reason, the inner diameter side member 10c can be easily assembled. In the case of this example, as in the second example described above, the rollers 11 and 11 are not pressed against the other circumferential surfaces of the protrusions 24b and 24b by the springs 12c and 12c. , 11 can be prevented from falling off. Other structures and operations are the same as those in the second example.

[Fourth Example of Embodiment]
24 to 28 show a fourth example of the embodiment of the invention corresponding to claims 1 to 4 , 7, 8 , 11 , 14, and 15. Also in this example, as in the second example described above, the shape of the inner peripheral surface (cam surface 15c) of the cylindrical portion 21a constituting the outer ring 9c is substantially hexagonal when viewed from the axial direction. And each vertex of this hexagon and its peripheral part are made into the recessed part 25a, 25a. However, in the case of this example, unlike the above-described second example, the outer ring 9c and the cage 16d are not coupled by screws. Instead, in the case of this example, with the rollers 11 and 11 and the springs 12c and 12c incorporated between the outer ring 9c and the cage 16d, the inner peripheral surface of the cylindrical portion 21a The protrusions 24c and 24c constituting the retainer 16d are fitted into the portions 47 and 47 between the recesses 25a and 25a in a state having a tightening margin.

  That is, among the projections 24c and 24c, the center of the projections 24c and 24c is larger than the spacing between the projections 24c and 47b. The distance in the free state between the radially outer surfaces of the protrusions 24c and 24c existing at positions symmetrical with respect to the axis (positions opposite to 180 degrees) is increased. The projections 24c and 24c are fitted between the inter-portions 47 and 47 in a state where the distance between the radially outer surfaces of the projections 24c and 24c is elastically reduced. . As a result, the radially outer surfaces of the protrusions 24c and 24c elastically abut against the portions 47 and 47, and the retainer 16d and the outer ring 9c are connected to each other without separation.

  In the case of this example, since the number of the inter-parts 47 and 47 and the protrusions 24c and 24c is six, there are three combinations that are symmetrical with respect to the central axis. In the case of this example, each of the inter-portions 47 and 47 and each of the protrusions 24c and 24c has a relationship having the above-described tightening allowance in all combinations. There may be at least one set. In addition, when the number of projections 24c, 24c having a tightening margin is an odd number, the projections 24c, 24c are divided into three or more in the circumferential direction, at least on both sides in the diameter direction (concentrated on one half circumference). Arrange). In any case, any two or more of the protrusions 24c and 24c are fitted into the inter-space portions 47 and 47 with a tightening margin, and the retainer 16d. And the outer ring 9c only need to be connected to each other.

  In the case of this example, slits 48, 48 are formed in the projecting portions 24c, 24c in the circumferential direction of the cage 16c. And when fitting each said protrusion 24c, 24c in the state which has a fastening allowance with respect to each said part 47, 47, these each protrusion 24c, 24c is making it easy to bend in radial direction. As a result, the retainer 16d can be easily assembled to the outer ring 9c, and it is easy to secure the allowance between the projections 24c, 24c and the inter-portions 47, 47. In addition, as shown in FIG. 29, you may abbreviate | omit each slit 48, 48 of each protrusion 24c, 24c. In this case, these protrusions 24c, 24c are somewhat difficult to fit into the outer ring 9c, but the fitting strength can be increased accordingly.

  In the case of this example, as shown in FIGS. 26 and 28, the shape of the outer peripheral edge of the substantially annular ring portion 23b constituting the cage 16d is a dodecagon. That is, of the outer peripheral edge of the ring portion 23b, the portions that are aligned with the protrusions 24c and 24c arranged at six locations in the circumferential direction are linear, and the space between the protrusions 24c and 24c. The part is continued with a straight line instead of an arc. The shape of each of the inter-portions 47 and 47 is made to be substantially flat according to the shape of the radially outer surface of each of the protrusions 24c and 24c. In a state where such a cage 16d is assembled to the outer ring 9c, as shown in FIG. 26, the portion between the protrusions 24c, 24c is aligned with the recesses 25a, 25a of the outer ring 9c. In addition, radial gaps 45a and 45a are provided in a portion between the protrusions 24c and 24c of the ring portion 23b and a portion between the recesses 25a and 25a, respectively. On the other hand, unlike the above-described second example, the annular portion 23b is not provided with through holes 42 and 42. In the case of this example, the gaps 45a and 45a have the same function as the through holes 42 and 42 of the second example.

  In the case of this example configured as described above, these members 9c and 16d are connected to each other in a state where the rollers 11 and 11 and the springs 12c and 12c are assembled between the outer ring 9c and the cage 16d. These members 9c, 16d, 11, and 12c can be unitized. Therefore, it is possible to prevent these members from being separated before the product is delivered, and to be easily assembled to the inner diameter side member 10c. Further, since the above members are unitized, no special attachment (joining member) is required, and the cost does not increase. If the cage 16d is formed by injection molding of synthetic resin or die casting of an aluminum alloy, the cage 16d having the projections 24c and 24c as described above can be easily obtained. . Other structures and operations are the same as those of the second example described above except that the thinned portions 38, 38 are not formed on the protrusions 24c, 24c.

[Fifth Example of Embodiment]
30 to 31 show a fifth example of the embodiment of the invention corresponding to the first, second, fifth, seventh, eighth, eleventh , fourteenth and fifteenth embodiments. In the case of this example, unlike the above-described fourth example, the protrusions 49 and 49 protruding from the end surfaces of the protrusions 24d and 24d of the retainer 16e are tightened on the inner peripheral edge of the inward flange portion 22a of the outer ring 9c. It is fitted in a state of having. And the said outer ring | wheel 9c and the said holder | retainer 16e are couple | bonded. In other words, the diameter of the circumscribed circle in the free state of each of the projections 49, 49 is slightly larger than the inner diameter of the inward flange 22a. When the outer ring 9c and the retainer 16e are coupled, the protrusions 49 and 49 are fitted into the inner peripheral edge of the inward flange portion 22a while elastically deforming the circumscribed circle in a direction of decreasing the diameter. To do. The protrusions 49 and 49 are elastically brought into contact with the inner peripheral edge of the inwardly directed flange 22a, so that the outer ring 9c and the retainer 16e are inseparably connected. In addition, any two or more of the protrusions 49, 49 are fitted to the inner peripheral surface of the inward flange 22a in a state having a tightening margin, and the retainer 16e and The outer ring 9c only needs to be connected to the outer ring 9c, but it is preferable that the projections 49 and 49 having a tightening margin are provided at three or more positions at equal intervals in the circumferential direction. Other structures and operations are the same as those in the fourth example.

[Sixth Example of Embodiment]
32 to 33 show a sixth example of an embodiment of the present invention corresponding to claims 1, 2 , 6 to 8 , 11 , 14, and 15. FIG. In the case of this example, by engaging the claw portions 50, 50 protruding from the end surfaces of the protrusions 24e, 24e of the retainer 16f with the inner peripheral edge of the inward flange portion 22a of the outer ring 9c, the outer ring 9c and the above-mentioned The cage 16f is coupled. Each of the claw portions 50, 50 is formed so as to protrude in the axial direction from the radially inner end portion of the distal end face of each of the protrusions 24e, 24e, and the distal end portion is bent to the outer diameter side. . In addition, an inclined surface is formed in a portion closer to the outer diameter of the distal end portion, and serves as a guide when the claw portions 50 and 50 are elastically deformed by engagement with the inner peripheral edge portion of the inward flange portion 22a.

  The tip portions of the claw portions 50, 50 are elastically deformed radially inward when passing through the inner peripheral edge portion of the inward flange portion 22a. And if the front-end | tip part of each said nail | claw part 50 and 50 exceeds the said inner peripheral edge part, the front-end | tip part of each of these nail | claw parts 50 and 50 will be elastically restored, and it engages with the inner peripheral edge part of the said inward ridge part 22a. To do. As a result, the cage 16f and the outer ring 9c are coupled to each other without separation. The claw portions 50 and 50 may be provided at least at one location, preferably at two or more locations in the circumferential direction. Other structures and operations are the same as those in the above-described fourth example.

[Seventh example of embodiment]
34 to 39 show a seventh example of the embodiment of the invention corresponding to claims 1, 2 , 7 , 8 , 11, and 14 to 17. FIG. In the case of this example, unlike the fourth to sixth examples described above, the protrusions 24f and 24f of the cage 16g are not used, and instead the outer ring 9c and the cage 16g are coupled by the coupling member 51. Yes. The coupling member 51 protrudes radially outward from an annular side plate portion 52 and a plurality of locations (four locations in the illustrated example) of the outer peripheral edge of the side plate portion 52, and further, a portion closer to the tip is on one side with respect to the axial direction. And arm portions 53 and 53 bent to each other, and flange portions 54 and 54 provided by projecting the tip portions of the arm portions 53 and 53 inward in the radial direction. These arm portions 53 and 53 are arranged at equal intervals in the circumferential direction of the side plate portions 52 and 52. These arm portions 53, 53 may be provided at least at two locations at positions separated in the circumferential direction.

  When the outer ring 9c and the cage 16g are coupled by the coupling member 51, the rollers 11, 11 and the springs 12c, 12c are incorporated in one of the outer ring 9c and the cage 16g, or these The rollers 11 and 11 and the springs 12c and 12c are assembled between the outer ring 9c and the cage 16g, and the outer ring 9c and the cage 16g are combined. Next, the coupling member 51 is assembled from the side opposite to the inward flange portion 22a of the outer ring 9c. At this time, the outer peripheral surface of the outer ring 9c is allowed to pass while elastically deforming the distal end portion of each arm portion 53, 53 of the coupling member 51 to the outer diameter side. As a result of this work, when the flanges 54, 54 provided at the distal ends of the arm parts 53, 53 exceed the outer peripheral surface of the outer ring 9c, the arm parts 53, 53 are elastically restored. Thus, each of the flange portions 54, 54 engages the side surface of the outer ring 9c on the inward flange portion 22a side. At the same time, the side plate portion 52 of the coupling member 51 contacts the side surface of the annular portion 23b of the cage 16g. As a result, the outer ring 9c and the cage 16g are connected to each other without separation, and a one-way clutch assembly 55 is obtained as shown in FIGS. The coupling member 51 is removed when or after the one-way clutch assembly 55 is assembled to the inner diameter side member 10c. Other structures and operations are the same as those of the fourth example described above except that the coupling member 51 is required.

[Eighth Example of Embodiment]
40 to 42 show an eighth example of the embodiment of the invention corresponding to claims 1, 2 , 7 , 8 , 11 , and 14 to 19. FIG. In the case of this example, the arm portions 53a and 53a of the coupling member 51a are provided at two positions on the inner peripheral edge side of the side plate portion 52a. Each of these arm portions 53a and 53a is provided at a symmetrical position (a position opposite to 180 degrees) with respect to the central axis of the side plate portion 52a. Each of the arm portions 53a and 53a is provided so as to protrude in the axial direction from the side surface of the inner diameter side end portion of the side plate portion 52a, and is provided in a state of protruding outward in the radial direction at each distal end portion. The diameter of the circumscribed circle except for the flange portions 54a and 54a is slightly smaller than the inner diameter of the inward flange portion 22a of the outer ring 9c and the annular ring portion 23b of the cage 16g. On the other hand, the diameter of the circumscribed circle in the free state of each of the flange portions 54a, 54a is slightly larger than the inner diameters of the inward flange portion 22a and the annular ring portion 23b. In the case of this example, the coupling member 51a configured as described above is coupled from the inward flange portion 22a side as shown in FIG.

  In the case of this example, the coupling member 51a is arranged so that the arms 53a and 53a are arranged at positions where they do not interfere with the rollers 11 and 11 arranged between the outer ring 9c and the cage 16g. Positioning in the circumferential direction is performed. In the state where the outer ring 9c and the cage 16g are coupled by the coupling member 51a, the side plate portion 52a is brought into contact with the side surface of the outer ring 9c on the inward flange portion 22a side. Further, six through holes 56 penetrating in the axial direction are provided on the side surface of the outer ring 9c at equal intervals in the circumferential direction. These through holes 56, 56 are for inserting bolts for assembling the outer ring 9c to a power transmission device or the like. In order to achieve positioning in the circumferential direction, positioning protrusions projecting in the same direction as the arm portions 53a and 53a at positions (six locations) aligned with the through holes 56 and 56 of the side plate portion 52a. Portions 57 and 57 are provided. When the outer ring 9c and the cage 16g are coupled by the coupling member 51a, the positioning protrusions 57 and 57 are inserted into the through holes 56 and 56, respectively. With this configuration, the position of the coupling member 51a in the circumferential direction with respect to the outer ring 9c is restricted. The positioning protrusions 57 and 57 may be provided at least at one location.

  The relationship between the positions where the rollers 11, 11 of the outer ring 9c are arranged and the positions of the through holes 56, 56, the positions of the arms 53a, 53a of the coupling member 51a, and the positioning protrusions If the relationship between the positions of the portions 57 and 57 is appropriately regulated, the circumferential positions of the arms 53a and 53a with respect to the rollers 11 and 11 can be regulated appropriately. In the case of this example, when the outer ring 9c and the cage 16g are coupled by the coupling member 51a, the arm portions 53a and 53a are projected from either of the projections 24f and 24f of the cage 16g. The parts 24f and 24f are aligned. As a result, when the coupling member 51a is assembled and the outer ring 9c and the cage 16g are unitized, the rollers 11, 11 and the springs 12c, 12c interfere with the arms 53a, 53a. Thus, it can be prevented from being damaged or displaced from a predetermined position.

  In any case, the tip portions of the arm portions 53a and 53a are elastically deformed and pass through the inner peripheral edge of the inward flange portion 22a of the outer ring 9c and any of the protrusions 24f and 24f. The flange portions 54a and 54a formed on the portion engage with the inner peripheral edge portion of the annular ring portion 23b of the cage 16g. As a result, the cage 16g and the outer ring 9c are coupled to obtain a one-way clutch assembly 55a as shown in FIGS. The assembling direction of the coupling member 51a may be from the side opposite to the inward flange portion 22a of the outer ring 9c, as shown in FIG. In this case, the flanges 54a, 54a formed at the distal ends of the arms 53a, 53a engage with the inner peripheral edge of the inward flange 22a, and the inner plate portion of the side plate 52a is connected to the cage 16g. It contacts the side surface of the annular portion 23b (see FIG. 41). Other structures and operations are the same as those in the seventh example.

[Ninth Embodiment]
44 to 46 show a ninth example of the embodiment of the invention corresponding to claims 1, 2 , 7 , 8 , 11 , and 14 to 19, respectively. In the case of this example, the coupling member 51b includes a side plate portion 52b and a pair of arm portions 53b and 53b that are bent in the same direction from both radial ends of the side plate portion 52b. Further, a positioning projection 57a is provided on the side surface of the side plate 52b so as to project in the same direction as the both arms 53b and 53b.

  When the outer ring 9c and the cage 16g are coupled by the coupling member 51b, the coupling member 51b is arranged so that the outer ring 9c and the cage 16g are sandwiched from both radial sides by the arms 53b and 53b. Deploy. Then, the side surface of the side plate portion 52b is brought into contact with one side surface of the outer ring 9c, and the flanges 54b and 54b formed at the distal ends of the both arm portions 53b and 53b are connected to the outer peripheral edge of the other side surface of the outer ring 9c. And the inner peripheral edge of the annular portion 23b of the cage 16g. At this time, the positioning protrusion 57a is inserted into any through hole 56 formed in the outer ring 9c to position the coupling member 51b in the circumferential direction. Of the two arm portions 53 b and 53 b, the radially inner arm portion 53 b is prevented from interfering with the rollers 11 and 11. As a result, the outer ring 9c and the retainer 16g are coupled to obtain a one-way clutch assembly 55b as shown in FIGS. In the case of this example, the coupling member 51b is arranged at one place in the circumferential direction, but may be arranged at a plurality of places. Further, the assembling direction of the coupling member 51b may be opposite to that described above. Other structures and operations are the same as those in the above-described eighth example.

[Tenth example of embodiment]
47 to 54 show a tenth example of the embodiment of the invention corresponding to claims 1, 2 , 7 , 8 , 11 , 14, 15, and 20. In the case of this example, the elastic protrusions 58 and 58 are protruded at the tip surfaces of the two protrusions 24f and 24f, respectively, out of the protrusions 24f and 24f of the retainer 16h, during the injection molding of the retainer 16h. Forming. Engaging claws 59 and 59 projecting toward the outer diameter side as shown in detail in FIG. 53 are provided on the proximal end portions of these elastic projecting portions 58 and 58, respectively. Of the elastic protrusions 58, 58, the connection parts 60, 60 with the tip surfaces of the protrusions 24f, 24f are thinner than the other parts, and as will be described later, these connection parts. 60 and 60 make it easy to separate the elastic protrusions 58 and 58 from the tip surfaces of the protrusions 24f and 24f. The diameter of the circumscribed circle of the elastic protrusions 58, 58 excluding the engagement claws 59, 59 is smaller than the inner diameter of the inward flange portion 22a of the outer ring 9c. On the other hand, the diameter of the circumscribed circle in the free state of each of the engaging claws 59, 59 is made larger than the inner diameter of the inward flange portion 22a.

  Further, a ring portion 61 having an outer diameter smaller than the inner diameter of the inward flange portion 22a is provided at the distal end portion of each of the elastic protruding portions 58, 58. In other words, the elastic protrusions 58 and 58 are spanned between two circumferential portions of the ring portion 61 and the tip surfaces of the two protrusions 24f and 24f. And while ensuring the rigidity regarding the radial direction of these each elastic protrusion parts 58 and 58, when separating each these elastic protrusion parts 58 and 58, they are made easy to grasp. The elastic protrusions 58 and 58 are disposed symmetrically (180 ° opposite positions) with respect to the central axis of the ring portion 61. Thereby, the said ring part 61 makes it easy to elastically deform at the time of the assembly | attachment to the outer ring | wheel 9c described below.

  When the cage 16h provided with the respective elastic protrusions 58 and 58 is assembled to the outer ring 9c in this way, the ring part 61 is inserted from the opposite side of the inner ring part 22a of the outer ring 9c. The elastic protrusions 58 and 58 are passed through the inwardly directed flange 22a. At this time, the engaging claws 59, 59 provided at the base ends of the elastic protrusions 58, 58 pass through the inner peripheral edge of the inward flange 22a while being elastically deformed. At this time, the ring portion 61 is elastically deformed into an elliptical shape (the portion between the engaging claws 59 and 59 has a short diameter), and the diameter of the circumscribed circle of the engaging claws 59 and 59 is elastically changed. Make it smaller. These engagement claws 59, 59 are elastically restored in a state exceeding the inner peripheral edge portion of the inward flange portion 22a, and as shown in detail in FIG. 49, the inner peripheral edge portion of the inward flange portion 22a. Engage with.

  As a result, with the rollers 11 and 11 and the springs 12c and 12c incorporated, the protrusions 24f and 24f of the retainer 16h are disposed in the outer ring 9c, and the inward flange 22a is It is clamped by the portions 24f and 24f and the engaging claws 59 and 59. Then, the retainer 16h and the outer ring 9c are connected to each other without separation to obtain a one-way clutch assembly 55c as shown in FIG. The elastic protrusions 58 and 58 may be provided at least at one location, preferably at two or more locations separated in the circumferential direction.

  In the case of this example, when assembling the one-way clutch assembly 55c to the inner diameter side member 10c or after assembling, the elastic protrusions 58 and 58 are separated from the cage 16h as shown in FIG. To do. At this time, the protruding portions 24f and 24f are separated from the distal end surfaces by connecting portions 60 and 60 provided at the base end portions of the elastic protruding portions 58 and 58, respectively. As described above, each of the connection portions 60 and 60 is thinner than the other portions of the elastic protrusions 58 and 58. 58 and the front end surfaces of the protrusions 24f and 24f can be easily separated. Other structures and operations are the same as those in the sixth example shown in FIGS.

[Eleventh example of embodiment]
Figure 55 to 58, claim 1,2,7,8,11 correspond to 14,15,21, shows an eleventh example of the embodiment of the present invention. In the case of this example, when the retainer 16i is assembled to the outer ring 9c, the base end portions of the elastic protrusions 58a and 58a are brought into elastic contact with the inner peripheral surface of the inward flange portion 22a of the outer ring 9c. That is, the diameter of the circumscribed circle in the free state of the base end portion of each of the elastic protrusions 58a, 58a is made larger than the inner diameter of the inward flange portion 22a. Then, with the elastic protrusions 58a and 58a passing through the inward flange 22a, the base ends of the elastic protrusions 58a and 58a are press-fitted into the inward flange 22a. As a result, the retainer 16i and the outer ring 9c are coupled to each other without separation. Also in the case of this example, the connection portions 60a and 60a with the distal end surfaces of the protrusions 24f and 24f of the retainer 16i are weaker than the other portions at the base ends of the elastic protrusions 58a and 58a. Thus, the elastic protrusions 58a, 58a are easily separated from the protrusions 24f, 24f when or after being assembled to the inner diameter side member 10c. Other structures and operations are the same as those in the tenth example.

  The above examples may be applied in combination as appropriate. Further, in each of these examples, the description has been given of the structure of three or six rollers 11, 11, but it goes without saying that the number of these rollers 11, 11 can be set as appropriate.

Sectional drawing which shows the 1st example of embodiment of this invention. 2 is a cross-sectional view taken along the line II in FIG. The disassembled perspective view which shows the 1st example of embodiment of this invention. (A) is a top view of an outer ring | wheel, (B) is a roll sectional drawing of (A). The perspective view of an outer ring | wheel. The perspective view which shows another example of an outer ring | wheel. The front view and side view of a holder | retainer. (A) is a front view of a cylindrical member, (B) is a ha sectional view of (A). Sectional drawing which shows the manufacturing process of an outer ring | wheel. The state before removing the portion closer to the inner diameter of the inwardly facing flange portion is shown, (A) is a front view, and (B) is a knee cross-sectional view of (A). The figure shown in FIG. The figure which cut | disconnected some 2nd examples of embodiment of this invention, and was seen from the inward collar part side. Similarly, the figure which cut | disconnected a part and was seen from the right side of FIG. Similarly, the figure seen from the cage side. The figure corresponded in the upper right part of FIG. 11 before incorporating an inner diameter side member. The upper part enlarged view of FIG. (A) is a view seen from the same direction as FIG. 11, (B) is a perspective view, (C) is a perspective view seen from the opposite side to (B). (A) is a view seen from the same direction as FIG. 13, (B) is a perspective view, and (C) is a perspective view seen from the opposite side to (B). The figure which looked at the state before removing the near-inner-diameter part of a raw inward saddle part from the same direction as FIG. The figure which shows another example of the groove | channel between the internal peripheral surface of an outer ring | wheel, and an inward flange part, and omits a roller of FIG. The figure which looked at the locked state of the 3rd example of an embodiment of the invention from the inward ridge part side by cutting a part. The figure similar to FIG. 20 which similarly shows an overrun state. FIG. The figure similar to FIG. 20 which shows the state in which an inner diameter side member does not exist. The figure which looked at the 4th example of embodiment of this invention from the inward collar part side which cut and shows a part. Similarly, the figure which cut | disconnected a part and was seen from the right side of FIG. Similarly, the figure seen from the cage side. The upper right part enlarged view of FIG. The perspective view which takes out and shows only a holder | retainer. The figure similar to FIG. 27 which shows another example of a holder | retainer. The figure which looked at the 5th example of an embodiment of the invention from the inward collar part side which cut and shows a part. The upper part enlarged view of FIG. The perspective view which looked at the 6th example of an embodiment of the invention from the inward collar part side. The perspective view which takes out and shows only a holder | retainer. The figure which looked at the 7th example of embodiment of this invention from the inward collar part side which cut and shows a part. Similarly, the figure which cut | disconnected a part and was seen from the right side of FIG. Similarly, the figure seen from the cage side. The perspective view which looked at the one-way clutch assembly before assembling | attaching to an internal diameter side member from the inward collar part side. Similarly, the perspective view seen from the holder side. The perspective view which takes out and shows only a coupling member. The perspective view which shows the 8th example of embodiment of this invention. Similarly, the perspective view seen from the opposite side of FIG. The perspective view which shows the assembly | attachment state of a coupling member. The perspective view which shows another example of the assembly | attachment state of a coupling member. The perspective view which shows the 9th example of embodiment of this invention. Similarly, the perspective view seen from the opposite side of FIG. The perspective view which takes out and shows only a coupling member. The figure which looked at the 10th example of an embodiment of the invention from the inward collar part side which cut and shows a part. The figure seen from the right side of FIG. The G part enlarged view of FIG. The figure which looked at the 10th example from the cage side. Similarly, the perspective view seen from the inward ridge part side. The perspective view which takes out and shows only a holder | retainer. The enlarged view which looked at the connection part of the protrusion of a holder | retainer and an elastic protrusion from the left side of FIG. The perspective view which shows the state which isolate | separates each elastic protrusion part. The perspective view which shows the 11th example of embodiment of this invention. The perspective view which takes out and shows only a holder | retainer. The enlarged view which looked at the connection part of the protrusion of a cage | basket and an elastic protrusion part from radial direction. The perspective view which shows the state which isolate | separates each elastic protrusion part. The schematic diagram which shows an example of the starter motor type starter incorporating the one-way clutch used as the object of the present invention. Sectional drawing which shows the 1st example of the conventional structure of a one-way clutch. FIG. 61 is an enlarged view of a part in FIG. 60. Sectional drawing which shows the 2nd example of the conventional structure of a one-way clutch.

DESCRIPTION OF SYMBOLS 1 Cell motor 2 Rotating shaft 3 Gear transmission mechanism 4, 4a, 4b, 4c, 4d One-way clutch 5 Crankshaft 6 Piston 7 Large gear 8 Output shaft 9, 9a, 9b, 9c Outer ring 10, 10a, 10b, 10c Inner diameter side member 11 Roller 12, 12a, 12b, 12c Spring 13 Cover 14 Recessed portion 15, 15a, 15b, 15c Cam surface 16, 16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h, 16i Cage 17, 17a, 17b Pocket 18 Bottomed groove 19 Press rod 20 Screw 21, 21a Cylindrical part 22, 22a Inward flange part 23, 23a, 23b Ring part 24, 24a, 24b, 24c, 24d, 24e, 24f Protruding part 25, 25a Recessed part 26 Holding Part 27 Receiving part 28 Screw 29 Screw hole 30 Through hole 31 Cylindrical member 32 Base 33 Die 4, 34a Punch 35, 35a Inwardly facing flange portion 36 Partial cylindrical portion 37 Thinning portion 38 Projection piece 39 Projection portion 40 Through hole 41 Screw hole 42 Through hole 43 Groove 44 Intermediate material 45, 45a Clearance 46 Second protrusion 47 Intersection 48 Slit 49 Projection 50 Claw 51, 51a, 51b Coupling member 52, 52a, 52b Side plate 53, 53a, 53b Arm 54, 54a, 54b Hook 55, 55a, 55b, 55c One-way clutch assembly 56 Through-hole 57, 57a Positioning projection 58, 58a Elastic projection 59 Engaging claw 60, 60a Connection portion 61 Ring portion

Claims (21)

  An outer diameter side member in which a cam surface that is uneven in the circumferential direction is formed on the inner circumferential surface by plastically deforming the inner circumferential surface of the metal cylindrical member, and the cam surface and the inner side of the outer diameter side member And a plurality of rollers arranged at a plurality of positions in the circumferential direction between the outer peripheral surface of the inner diameter side member and the respective rollers, the distance between the cam surface and the outer peripheral surface of the inner diameter side member is reduced. A plurality of elastic members each pressing in the direction and the outer diameter side member in a state of being coupled with the outer diameter side member and the inner diameter side member, a substantially annular flat plate portion, and the flat plate portion A plurality of protrusions provided at a plurality of circumferential positions on one side of each of the plurality of protrusions, each of which is a receiving part capable of supporting the elastic force of each elastic member. A cage having a portion between them as a pocket for storing each roller and each elastic member; The one-way clutch with. The outer diameter side member is formed by integrally forming a cylindrical portion having a cam surface on the inner peripheral surface and an inward flange protruding radially inward from one axial end portion of the cylindrical portion. Each roller and each elastic member are accommodated in each pocket, and in a state where the outer diameter side member and the retainer are coupled, each roller and each elastic member are connected to the inward flange and the flat plate of the retainer. The one-way clutch of Claim 1 arrange | positioned between parts. By fitting in a state with allowance tighten the projections of the cage on the inner peripheral surface of the outer diameter side member, and coupling the cage and these outer diameter side member, any one of claims 1-2 The one-way clutch described in item 1. The one-way clutch according to claim 3 , wherein a slit is provided in a circumferential direction in a radial intermediate portion of each protrusion. The outer diameter side member and the cage are coupled by fitting the protrusions protruding from the end faces of the protrusions of the cage to the inner peripheral edge of the inward flange portion of the outer diameter side member with a tightening margin. The one-way clutch according to claim 2 . The inner peripheral edge portion of the inward flange portion of the outer diameter side member, the claw portion projecting from the end faces of the projections of by engaging the retainer, combined with the cage and these outer diameter side member, according to claim 2 The one-way clutch described in 1. The one-way clutch according to any one of claims 1 to 6 , wherein the cage is formed by injection molding of a synthetic resin or by molding of a metal material. On the other side in the circumferential direction of each protrusion constituting the cage, a protrusion protruding toward the inside of each pocket is formed in the radially inward part from the center of each roller. The rollers and the elastic members are arranged, and the outer peripheral surfaces of the rollers and the protruding pieces are connected to each other with the elastic force of the elastic members pressed against the other circumferential surface of the protruding portions. The one-way clutch according to any one of claims 1 to 7, wherein by engaging, the rollers are prevented from falling off inward in the radial direction. The one-way according to any one of claims 1 to 8 , wherein a protrusion that protrudes toward each roller is formed on a part of one side surface in a circumferential direction of each protrusion that constitutes the cage. clutch. Each projecting piece is formed in the radially inward portion from the center of each roller, and the tip of each projecting piece, and the other circumferential surface of each projecting part facing the tip in the circumferential direction, The one-way clutch according to claim 9 , wherein an interval between the rollers is smaller than an outer diameter of each of the rollers. A groove is formed over the entire circumference in a continuous portion between the inner peripheral surface of the cylindrical portion of the outer diameter side member and the one side surface on which the cage of the inward flange portion is disposed. The one-way clutch according to claim 2 or any one of claims 3 to 10 which cites this claim 2 , wherein the one side surface of the portion is continuous so as not to have a corner portion.   The one described in any one of Claims 1-11 which each formed the through-hole which penetrates this flat plate part in the position remove | deviated from each protrusion in the circumferential direction several places of the flat plate part of a holder | retainer. Direction clutch.   The one-way clutch according to claim 12, wherein each through hole is a long hole that is long in a circumferential direction. The gap which can distribute | circulate lubricating oil in each pocket is provided between the inner peripheral part of the inward flange part of an outer diameter side member, and the outer peripheral surface of an inner diameter side member, or quote this claim 2 or this claim 2 The one-way clutch according to any one of claims 3 to 13 . The method for manufacturing a one-way clutch according to claim 2 or any one of claims 3 to 14 which cites this claim 2 , wherein the inner diameter is an inscribed circle of the cam surface of the outer diameter side member. While the outer peripheral surface of the metal cylindrical member smaller than the diameter is constrained, the punch is pushed into the inner diameter portion of the cylindrical member to form the cam surface of the outer diameter side member on the inner peripheral surface of the cylindrical member. Then, by moving the surplus generated at this time to one end side in the axial direction of the cylindrical member, an inwardly facing flange portion protruding radially inward from the cam surface is formed at one end portion of the cylindrical member. Then, the manufacturing method of the one-way clutch which removes a portion near the inner diameter of the inner inwardly facing flange portion to form the inwardly facing flange portion of the outer diameter side member. It is a manufacturing method of the one way clutch given in any 1 paragraph of Claims 1-2 and 7-14 , Comprising : Each roller and each elastic member were incorporated between an outer diameter side member and a cage. In this state, the outer diameter side member and the cage are connected to each other by a coupling member to form a one-way clutch assembly, and the coupling is performed when or after the one-way clutch assembly is assembled to the inner diameter side member. The manufacturing method of the one-way clutch which removes a member.   As the coupling member, a member including a side plate portion, at least two arm portions projecting from one side surface of the side plate portion, and a flange portion provided at a tip portion of each arm portion is used. In contact with the side surface of either one of the outer diameter side member and the cage, and the arm portions are arranged on the outer diameter side or inner diameter side of the both members, and the flange portions are placed on the other side. The method for producing a one-way clutch according to claim 16, wherein the two members are non-separably coupled by engaging the side surfaces of the members.   At least one arm portion of each arm portion of the coupling member is disposed on the outer diameter side member and the inner diameter side of the cage, and the arm portion does not interfere with the rollers disposed in both the members. The method for manufacturing a one-way clutch according to claim 17, wherein the coupling member is positioned in a circumferential direction so as to be arranged.   The side plate portion of the coupling member is in contact with the side surface of the outer diameter side member. The side plate portion is provided with a positioning projection that protrudes in the same direction as each arm portion, and the side surface portion of the outer diameter side member is axially provided. The method for manufacturing a one-way clutch according to claim 18, wherein the positioning of the coupling member in the circumferential direction is performed by inserting the positioning protrusion into a screw hole or a through hole formed in the above. It is a manufacturing method of the one way clutch given in any 1 paragraph of Claims 1-2 , 7-14 , Comprising: On the front end surface of at least 2 projections of each projection of a cage, respectively, The elastic protrusions are formed so as to protrude, and engaging claws are provided on the proximal end portions of the elastic protrusions, and the elastic protrusions are elastically deformed when the retainer is assembled to the outer diameter side member. The inner peripheral edge of the inward flange portion of the outer diameter side member is allowed to pass, and after passing, the respective engaging claws are engaged with the radially inner end portion of the side surface of the inward flange portion, thereby holding the outer diameter side member. A one-way clutch assembly that is permanently connected to the device, and the one-way clutch assembly is removed when the one-way clutch assembly is assembled to the inner diameter side member or after the assembly. . It is a manufacturing method of the one way clutch given in any 1 paragraph of Claims 1-2 , 7-14 , Comprising: On the front end surface of at least 2 projections of each projection of a cage, respectively, When the elastic protrusion is formed to project and the cage is assembled to the outer diameter side member, the inner peripheral edge of the inward flange portion of the outer diameter side member is allowed to pass while elastically deforming each elastic protrusion, and after passing, By elastically abutting the base end of each of the elastic protrusions to the inner peripheral edge of the inward flange, the outer diameter side member and the retainer are inseparably coupled to form a one-way clutch assembly. A method of manufacturing a one-way clutch, wherein the elastic protrusions are removed when the one-way clutch assembly is assembled to the inner diameter side member or after the one-way clutch assembly is assembled.