JP6295979B2 - One way clutch - Google Patents

Description

  The present invention relates to a one-way clutch that is used as a brake mechanism that fixes one of two rotating members that rotate relative to each other and permits rotation in one rotational direction while restricting rotation in the other rotational direction. is there.

  By fixing one of the two rotating members that rotate relative to the one-way clutch so as not to rotate, the one-way clutch can function as a brake mechanism that restricts rotation in only one direction. For example, one rotation member of a one-way clutch is fastened to a predetermined fixing member, and the fixing member is fixed to a fixing body such as an engine block or a transmission housing, thereby restricting the rotation of one rotation member of the one-way clutch. be able to. For example, a spline or a serration is widely used to fasten one of the rotating members and the fixed member of the one-way clutch.

  As an example of the fastening structure of the rotating member by the spline or serration as described above, Patent Document 1 aims to suppress the rattling after the spline fitting and to adjust the alignment of the shaft center and the phase with high accuracy. The invention relating to the spline combination is described. In the spline combined body described in Patent Document 1, the tooth thickness near the tooth bottom of the inner tooth in the spline hole formed in the annular member is a tooth near the tip of the outer tooth in the spline shaft formed in the shaft member. A chamfered portion that is partly missing is formed in the portion of the inner tooth near the tip of the tooth so that it is larger than the groove width. It is comprised so that it may become smaller than the tooth gap width | variety near this tooth bottom.

  Patent Document 2 describes an invention related to a shaft member mounting structure for the purpose of suppressing the occurrence of a hitting sound between the shaft member attached to the fixed member and the fixed member. In the shaft member mounting structure described in Patent Document 2, a buffering spring member is provided in a gap between a fixed member and a spline-like fitting portion formed on the shaft member.

  Patent Document 3 discloses an invention relating to a ratchet mechanism for a one-way clutch for the purpose of suppressing the occurrence of a hitting sound between the outer race of the one-way clutch that is prevented from rotating by a spline with respect to the housing and the housing. Is described. The one-way clutch ratchet mechanism described in Patent Document 3 is inserted from the outer surface of the housing toward the engagement portion of the inner surface of the housing with the outer race, and the engagement force between the housing and the outer race is applied by the urging force of the spring. It is configured to pack the joints of the joints.

JP 2009-210086 A JP 2006-316967 A JP 2001-82510 A

  When the rotation member is stopped using a spline as in the configuration described in each of the above-mentioned patent documents, a predetermined clearance (or a predetermined clearance) is provided in the spline fitting portion in order to secure the assembly property of the spline fitting portion. ). In particular, when the one-way clutch is prevented from rotating as described above, since the rotation direction of the one-way clutch is restricted to one direction, if the clearance of the spline fitting portion is small, the spline fitting becomes difficult. turn into. On the other hand, if the clearance is increased by giving priority to the assembly of the spline fitting part, when torque is applied to the rotating member, a shock is generated due to the rattling of the spline fitting part, and noise and vibration are generated. I will.

  The present invention has been conceived by paying attention to the above technical problem. When one rotating member of a one-way clutch is fixed to a housing or the like by a spline and used as a brake mechanism, the spline fitting portion is excellent. An object of the present invention is to provide a one-way clutch capable of ensuring both assembling property and suppressing noise and vibration.

In order to achieve the above object, the present invention is a one-way clutch that allows two rotary members that rotate relative to each other only in a predetermined rotation direction to transmit torque between the rotary members, A fixing plate that is fitted to any one of the rotating members by a spline that is slid in the direction of the rotation axis is provided, and the fixing plate is fastened to and fixed to a fixing body, whereby In the one-way clutch used as a brake mechanism that allows rotation and restricts rotation in the other rotation direction, the fixed plate has a spline shaft or spline hole of the spline projecting in the rotation axis direction at a central portion. A formed base portion and a flange surface located on the outer peripheral side of the base portion and in surface contact with the mounting surface of the fixed body are formed. When the base portion and the flange portion are offset in the direction of the rotation axis, and the spline shaft is formed on the base portion, a spline hole that fits the spline shaft is provided. When the facing direction facing the formed rotating member, the protruding direction of the spline shaft, and the offset direction of the flange portion with respect to the base portion all match, and the spline hole is formed in the base portion, The facing direction facing the rotating member on which the spline shaft that fits into the spline hole is formed coincides with the offset direction, and the protruding direction of the spline hole and the offset direction are reversed, and the flange surface by fastening force to press to surface contact is added to the mounting surface, it is fixed to the fixed body, and wherein the group The spline shaft or the part where the spline hole is formed is molded so that a warp that deforms in the direction opposite to the offset direction occurs, and the warp is corrected by being fixed to the fixed body. Thus, the deformation is reduced .

In addition, the present invention is a one-way clutch that allows two rotational members that rotate relative to each other only in a predetermined rotational direction to transmit torque between the rotational members, and slides in the rotational axis direction. A fixing plate that is fitted to any one of the rotating members by a spline provided on the fixing member, and fastens the fixing plate to a fixing body to fix the fixing plate, thereby allowing rotation in one rotation direction and the other. in the one-way clutch which is used as a brake mechanism for restricting the rotation of the rotational direction, the fixed plates are formed by pressing a plate-like material, and, lay also spline shaft of the spline in the central portion a base portion which is spline hole is formed so as to protrude in the rotation axis direction, the mounting surface of the fixed body located on the outer peripheral side of the base portion and A flange portion formed with a flange surface to be contacted, wherein the base portion and the flange portion are offset in the direction of the rotation axis, and the spline shaft is formed on the base portion, the spline opposing direction opposite to the rotating member spline hole that fits to the shaft is formed, the protruding direction of the spline shaft, and the flange portion offset direction match all relative to the base portion, the base portion When the spline hole is formed, the opposing direction facing the rotating member on which the spline shaft that fits into the spline hole is formed coincides with the offset direction, and the protruding direction of the spline hole and the offset reversed and the direction by the fastening force to press to surface contact is added to the flange surface with respect to the mounting surface, before It is characterized in that it is by Uni configured Ru is fixed to the fixed body.

  And this invention is characterized by the fixed plate being shape | molded by pressing a plate-shaped raw material.

  According to this invention, in order to use the one-way clutch as a brake mechanism that restricts rotation in only one direction, the one-way clutch is provided with the fixed plate. The fixed plate is formed by a plate-like member, and is fastened to one of the rotating members of the one-way clutch by a spline. The fixing plate is formed with a base portion on which a spline shaft or spline hole of the spline is formed, and a flange surface that comes into surface contact with the mounting surface of the fixing body when the fixing plate is fixed to the fixing body such as a housing. And a flange portion. The base portion and the flange portion are offset in the rotation axis direction of the one-way clutch, that is, in the plate thickness direction of the fixed plate. By forming an offset part in the plate thickness direction on the fixed plate, the part where the spline shaft or spline hole of the base part is formed is the direction opposite to the offset direction of the flange part with respect to the base part when forming the fixed plate Warpage that is deformed easily occurs.

In the present invention, in consideration of the deformation direction of the warp generated in the fixed plate as described above, the protruding direction of the spline shaft or spline hole formed in the base portion is set. That is, when forming a spline shaft to the base portion, the projecting direction of the spline shaft, a counter direction opposite to the rotating member offset direction Oyo screw spline hole of the flange portion is formed with respect to the base portion coincides Thus, a spline shaft is formed. As a result, the warp as described above occurs in the fixed plate, thereby reducing the diameter of the spline shaft. Therefore, the clearance between the spline shaft and the spline hole formed in one of the rotating members is increased, and the fixed plate and any one of the rotating members can be easily spline-fitted. On the other hand, when the spline hole is formed in the base portion, the protruding direction of the spline hole is opposite to the above-described offset direction and the facing direction in which the fixed plate faces the rotating member on which the spline shaft is formed. Thus, a spline hole is formed. As a result, the warp as described above occurs in the fixed plate, and the diameter of the spline hole is increased. Therefore, the clearance between the spline hole and the spline shaft formed on one of the rotating members is increased, and the fixed plate and one of the rotating members can be easily fitted to the spline.

And in this invention, the fastening force which presses a fixed plate to a fixed body side is applied by bolt fastening, for example, and a fixed plate is fixed to a fixed body. With such a fastening force, the flange surface of the fixing plate is pressed so as to come into close contact with the mounting surface of the fixed body. By applying such a fastening force to the fixed plate in which the warp has occurred as described above, the warp of the fixed plate is corrected following the mounting surface of the fixed body. Therefore, the diameter of the spline shaft formed on the base portion is increased so as to return to the designed (target) dimension. Alternatively, the diameter of the spline hole formed in the base portion is reduced so as to return to the designed dimension. As a result, the clearance of the spline fitting portion between the fixed plate and one of the rotating members is reduced to return to the designed value. Therefore, rattling at the spline fitting portion as described above can be reduced as much as possible, and generation of noise and vibration can be suppressed.

  In addition, the fixed plate which produces the above curvature can be easily shape | molded by pressing a plate-shaped raw material. In the case of molding from a plate-like material by press working like this fixed plate, warping inevitably occurs. In the present invention, the shape and offset direction of the offset portion, and the shape and protruding direction of the spline shaft or spline hole are set in consideration of the warpage that occurs during such press working, and the fixed plate is formed. . Therefore, as described above, it is possible to easily configure a one-way clutch that can achieve both good assembly of the spline fitting portion and suppression of noise and vibration.

It is a figure which shows an example of a structure of the vehicle carrying the one-way clutch of this invention. It is a figure for demonstrating an example of a structure of the one-way clutch of this invention. It is a figure which shows an example of the fixed plate in the one-way clutch of this invention. It is a figure for demonstrating the offset direction of the fixed plate which formed the spline shaft in the base | substrate part, and the direction of the curvature which generate | occur | produces at the time of shaping | molding. It is a figure for demonstrating the offset direction of the fixed plate which formed the spline hole in the base | substrate part, and the direction of the curvature which generate | occur | produces at the time of shaping | molding. It is a figure for demonstrating the assembly | attachment procedure of the one-way clutch of this invention, Comprising: It is a figure which shows the state at the time of carrying out spline fitting of the fixed plate. It is a figure for demonstrating the assembly procedure of the one-way clutch of this invention, Comprising: It is a figure which shows the state which applied the fastening force to the fixed plate and completed the assembly. Is a diagram illustrating an example of forming a spline hole in the base portion of the fixing plate in the one-way clutch of the present invention. Is a diagram illustrating an example offset the flange portion on the engine side with respect to the base portion of the fixed plate in the one-way clutch of the present invention. The one-way clutch of the present invention, is a view to view an example of using a rotational direction of the rotary shaft of the motor as a brake mechanism for restricting only one direction. It is a figure which shows an example of a structure of the automatic transmission carrying the one-way clutch of this invention. It is a diagram showing another example of a configuration of an automatic transmission equipped with a one-way clutch of the present invention.

  Next, the present invention will be specifically described with reference to the drawings. The one-way clutch that is the subject of the present invention is configured to function as a brake mechanism that fixes one of two relatively rotating members so that they cannot rotate and restricts rotation in only one direction. . An example of a vehicle Ve using such a one-way clutch is shown in FIG. The vehicle Ve is a hybrid vehicle equipped with an engine (ENG) 1, a first motor (MG 1) 2, and a second motor (MG 2) 3 as driving force sources. The vehicle Ve is configured so that the power output from the engine 1 is divided and transmitted to the first motor 2 and the drive shaft 5 by the power split mechanism 4. Further, the second motor 3 is driven by the electric power generated by the first motor 2, and the power output from the second motor 3 can be applied to the drive shaft 5.

  The power split mechanism 4 is configured by, for example, a planetary gear mechanism having a sun gear 6, a ring gear 7, and a carrier 8. In the example shown in FIG. 1, a single pinion type planetary gear mechanism is used. The planetary gear mechanism that constitutes the power split mechanism 4 is disposed on the same rotational axis as the output shaft 1 a of the engine 1. The first motor 2 is connected to the sun gear 6 of the planetary gear mechanism. The first motor 2 is disposed adjacent to the power split mechanism 4 on the side opposite to the engine 1, and the rotor 2 a of the first motor 2 is connected to the sun gear 6. A ring gear 7 which is an internal gear is arranged concentrically with the sun gear 6. The pinion gear meshing with the sun gear 6 and the ring gear 7 is held by the carrier 8 so that it can rotate and revolve. An input shaft 4 a of the power split mechanism 4 is connected to the carrier 8. The input shaft 4 a is connected to the output shaft 1 a of the engine 1 via the damper mechanism 9, the flywheel 13, and the one-way clutch 10.

  The damper mechanism 9 is for suppressing torque fluctuation of the output shaft 1a and torsional vibration due to torque fluctuation, and is assembled to rotate integrally with the flywheel 13, for example.

  A one-way clutch 10 is disposed between the housing 11 and the engine block 1 b of the engine 1. The housing 11 houses a transmission mechanism that constitutes a drive system of the vehicle Ve, including the one-way clutch 10 and the first motor 2 and the second motor 3. The housing 11 and the engine block 1b are integrally fixed by bolt fastening or the like with a fixing plate 12 of the one-way clutch 10 described later interposed therebetween.

  The one-way clutch 10 includes two rotating members 10a and 10b that rotate relative to each other, a fixed plate 12, and an engagement mechanism (not shown). One rotating member 10a and the fixed plate 12 are fastened by splines or serrations as described later. The fixed plate 12 is fixed to the housing 11 and the engine block 1b. The other rotating member 10b not fastened to the fixed plate 12 is attached to the output shaft 1a. The engagement mechanism engages only in one of the rotation directions and enables torque transmission between the two rotation members 10a and 10b. For example, the ratchet type, sprag type, pole type, or It is configured by a conventionally known mechanism such as a cam type.

  By fixing one rotating member 10a via the fixing plate 12 as described above, the one-way clutch 10 functions as a brake mechanism that restricts rotation in only one direction. Specifically, the one-way clutch 10 is engaged when the rotating member 10b freely rotates when the output shaft 1a rotates forward, and when torque in a direction that reversely rotates the output shaft 1a acts on the output shaft 1a. Thus, the rotation of the rotating member 10b is stopped. The normal rotation is rotation in the rotation direction of the crankshaft when the engine 1 is in a combustion operation, and the reverse rotation is rotation in the direction opposite to the normal rotation.

  The vehicle Ve configured as described above effectively uses the driving power sources of the engine 1 and the first motor 2 and the second motor 3 so that the energy efficiency or fuel consumption is improved, and the driving power is improved. To be able to meet the demands of. In particular, when a large driving force is required during EV traveling in which the operation of the engine 1 is stopped and the vehicle Ve is driven by the output of only the motor, the EV based on the outputs of both the first motor 2 and the second motor 3 is required. Driving is performed. Specifically, the first motor 2 is controlled to rotate in the reverse rotation direction as a motor and output torque, and the second motor 3 is controlled to rotate in the positive rotation direction as a motor and output torque. The In this case, since the torque in the reverse rotation direction acts on the output shaft 1a of the engine 1, the one-way clutch 10 is engaged. As a result, in a state where the output shaft 1a of the engine 1 and the carrier 8 of the power split device 4 are stopped, the vehicle Ve is efficiently and efficiently output by the outputs of both the first motor 2 and the second motor 3. EV driving can be performed. In this vehicle Ve, by using the one-way clutch 10 as described above, it is possible to easily perform without special operation or control during EV traveling by the outputs of both the first motor 2 and the second motor 3. The rotation of the output shaft 1a and the carrier 8 can be stopped and fixed.

  FIG. 2 shows a specific configuration of the one-way clutch 10 to which the present invention is applied and a state in which the one-way clutch 10 is assembled to a fixed body such as an engine block. As shown in FIG. 2, the rotating member 10 b of the one-way clutch 10 and the flywheel 13 are attached to the output shaft 1 a of the engine 1. Specifically, the rotating member 10b and the flywheel 13 are fixed to a flange 1c formed at the tip of the output shaft 1a by a bolt 14.

  As described above, the damper mechanism 9 is assembled to the flywheel 13 so as to rotate integrally. The damper mechanism 9 is attached to the input shaft 4 a of the power split device 4. The damper mechanism 9 and the input shaft 4a are fixed so as to rotate together by, for example, a spline.

  On the other hand, a fixed plate 12 is attached to the rotating member 10 a of the one-way clutch 10. Specifically, the rotating member 10a and the fixed plate 12 are fastened by a spline 15 provided so as to slide in the rotation axis direction of the one-way clutch 10 (left and right direction in FIG. 2). In the example shown in FIG. 2, a spline shaft 15a is formed in the base portion 12a of the inner peripheral portion of the fixed plate 12, and a spline hole 15b is formed in the rotating member 10a. The flange portion 12 b of the outer peripheral portion of the fixed plate 12 is fixed to the engine block 1 b by the bolt 16 together with the housing 11. Specifically, the bolt 12 is fastened in a state where the flange portion 12 b formed on the outer peripheral portion of the fixed plate 12 is sandwiched between the engine block 1 b and the housing 11. Thereby, the fixed plate 12 is being fixed to the engine block 1b which is a fixed body. A flange surface 12c facing the mounting surface 1d of the engine block 1b is formed on the flange portion 12b. Therefore, when the bolt is fastened as described above, a fastening force is applied to the fixing plate 12, whereby the flange portion 12b is pressed toward the mounting surface 1b, and the flange surface 12c and the mounting surface 1d come into surface contact.

  As described above, the one-way clutch 10 is provided with an engagement mechanism (not shown) such as a ratchet type or a sprag type between the rotary member 10a and the rotary member 10b. The engaging mechanism is opened when the torque in the forward rotation direction acts on the rotating member 10b, and allows relative rotation between the rotating member 10a and the rotating member 10b, and the torque in the reverse rotation direction acts on the rotating member 10b. In this case, the rotating member 10a and the rotating member 10b are integrated so as to be engaged with each other. Therefore, the one-way clutch 10 transmits torque between the output shaft 1a and the input shaft 4a when the output shaft 1a rotates in the forward direction, and when torque in the reverse rotation direction acts on the output shaft 1a. The rotation member 10a is configured to function as a brake mechanism that stops and fixes the rotation of the output shaft 1a.

  FIG. 3 shows a specific configuration of the fixed plate 12. The fixed plate 12 includes a base portion 12a whose center portion is cut out in a circular shape, and a flange portion 12b positioned on the outer peripheral portion of the base portion 12a. As shown in FIG. 2, the base portion 12a is formed with a spline shaft 15a that fits into a spline hole 15b formed in the rotating member 10a. In the example shown in FIG. 3, the spline shaft 15a is opposite to the flange surface 12c in the rotational axis direction of the one-way clutch 10, that is, the plate thickness direction of the fixed plate 12 (left and right direction in the right sectional view of FIG. 3). 3 is formed so as to protrude from the base portion 12a. As described above, the flange portion 12b is formed with the flange surface 12c that comes into surface contact with the attachment surface 1d when the fixing plate 12 is attached to the engine block 1b.

  In the fixed plate 12, the base portion 12 a and the flange portion 12 b are offset in the rotation axis direction of the one-way clutch 10. In the example shown in FIGS. 2 and 3, the fixed plate 12 is positioned so that the flange portion 12b is located on the left side in the cross-sectional views of FIGS. Is molded. Therefore, in this fixed plate 12, the direction (offset direction) in which the flange portion 12b is offset with respect to the base portion 12a and the protruding direction of the spline shaft 15a formed on the base portion 12a coincide. Moreover, said protrusion direction is also in agreement with the opposing direction which opposes the rotation member 10a in which the spline hole 15b fitted to the spline shaft 15a was formed. That is, in the rotation axis direction of the one-way clutch 10, the offset direction, the protruding direction, and the facing direction all coincide.

  The fixed plate 12 is formed by press working such as forging or punching using a metal plate material such as steel or aluminum alloy as a raw material. For example, the contour shape of the fixed plate 12 and the central opening are formed by punching. The shape of the offset portion between the base portion 12a and the flange portion 12b is formed by forging. In addition, the shape of the spline part of the base | substrate part 12a can be shape | molded accurately, for example by flow forming. Or it can also shape | mold by cutting.

  As described above, the fixed plate 12 formed by pressing from a plate-shaped material inevitably warps due to the influence of the springback phenomenon or the residual stress. Specifically, as shown in FIG. 4, a warp occurs such that the portion of the base portion 12a where the spline shaft 15a is formed is deformed to the right in FIG. In the present invention, such a phenomenon that warpage occurs during pressing of the fixed plate 12 is actively used to facilitate the spline fitting between the fixed plate 12 and the rotating member 10a, and the fitting after the spline fitting. It is comprised so that the clearance of a joint part can be made small.

  That is, the fixed plate 12 is formed by pressing so that a portion where the spline shaft 15a of the base portion 12a is provided is deformed (warps) in the direction opposite to the offset direction. In the example of the fixed plate 12 shown in FIG. 4 and FIG. 2 and FIG. 3, the spline shaft 15a is formed on the base portion 12a. That is, the external teeth of the spline 15 are formed on the base portion 12a.

2, 3 and 4, when the spline shaft 15a is formed on the base portion 12a, the fixing plate 12 has a protruding direction of the spline shaft 15a and an offset direction of the flange portion 12b with respect to the base portion 12a. Are configured to match. In this case, the fixed plate 12 is warped at the time of molding by press working, thereby reducing the diameter of the spline shaft 15a formed on the base portion 12a. Specifically, the diameter of the tip portion of the spline shaft 15a inserted into the spline hole 15b formed in the rotating member 10a is reduced. Therefore, in the state where the warp is generated as described above, the clearance between the spline shaft 15a and the spline hole 15b is increased, and the spline shaft 15a and the spline hole 15b can be easily fitted.

The one-way clutch 10 may be configured such that the base portion 12a of the fixed plate 12 is provided with a spline hole 15b and the rotating member 10a is provided with a spline shaft 15a. As shown in FIG. 5, in the one-way clutch 10, when the spline hole 15b is formed in the base portion 12a, the protruding direction of the spline hole 15b and the offset direction of the flange portion 12b with respect to the base portion 12a are reversed. Configured. The offset direction is configured to coincide with the facing direction facing the rotating member 10a on which the spline shaft 15b fitted in the spline hole 15b is formed. In this case, the fixed plate 12 is warped at the time of molding by press working, thereby increasing the diameter of the spline hole 15b formed in the base portion 12a. Specifically, the diameter of the inlet portion of the spline hole 15b into which the spline shaft 15a formed in the rotating member 10a is inserted is increased. Therefore, in the state where the warp as described above occurs, the clearance between the spline hole 15b and the spline shaft 15a is increased, and the spline hole 15b and the spline shaft 15a can be easily fitted.

  Therefore, as described above, in consideration of the warp that occurs during the pressing process of the fixed plate 12, by setting the shape of the spline 15 formed by projecting to the base portion 12a and the projecting direction of the spline 15, the rotating member The fixed plate 12 can be easily assembled to 10a.

  Further, the fixing plate 12 that has been warped during press working as described above is fixed by pressing the flange portion 12b against the mounting surface 1d so that the flange surface 12c comes into surface contact with the mounting surface 1d of the engine block 1b. The warp of the plate 12 is corrected following the mounting surface 1d. As shown in FIG. 2, with the flange portion 12b sandwiched between the mounting surface 1d and the housing 11, the housing portion 11 and the engine block 1b are fastened with bolts. It is pressed to the block 1b side. As a result, the flange surface 12c is brought into close contact with the mounting surface 1d, and the warpage of the fixing plate 12 is corrected, and deformation due to the warpage is reduced. By correcting the warpage in this way, the clearance of the spline fitting portion between the fixed plate 12 and the rotating member 10a is reduced. Therefore, it is possible to reduce the rattling at the fitting portion of the spline 15 as much as possible, and to suppress the generation of noise and vibration.

  6 and 7 show an outline of a procedure for assembling the one-way clutch 10 to the engine block 1b via the fixed plate 12. FIG. When the one-way clutch 10 is assembled to the engine block 1b, first, as shown in FIG. 6, a fixed plate 12 is temporarily attached to the engine block 1b. For example, using the pin-shaped jig 17, the fixing plate 12 is aligned with the engine block 1b and temporarily fixed.

  Next, the main body of the one-way clutch 10 is assembled to the fixed plate 12 and the output shaft 1a that are temporarily attached to the engine block 1b. Specifically, an indicia joint-like fitting portion 18 between the one-way clutch 10 and the distal end portion of the output shaft 1a is fitted, and the spline hole 15b of the rotating member 10a and the spline shaft 15a of the fixed plate 12 are connected. Can be fitted. At this stage, the warping during the press working still remains on the fixed plate 12. Accordingly, as described above, the spline shaft 15a of the fixed plate 12 has a small diameter. Therefore, in this assembly process, even when the spline 15 is fitted, the one-way clutch 10 and the fixed plate 12 can be easily assembled.

  If the one-way clutch 10 and the fixed plate 12 are temporarily attached to the engine block 1b as described above, then the flywheel 13 and the damper mechanism 9 are attached to the output shaft 1a and the input shaft 4a, respectively.

  In the final assembly process, as shown in FIG. 7, the engine block 1b and the housing 11 are bolted together with the fixing plate 12 sandwiched therebetween, and the assembly is completed. In this final process, the engine block 1b and the housing 11 are fastened by bolts, whereby a fastening force by bolt fastening is applied to the fixing plate 12, and the flange surface 12c is pressed against the mounting surface 1d. At the same time, the fixing plate 12 receives a reaction force from the engine block 1b side. As a result, the warping of the fixed plate 12 is corrected so as to follow the mounting surface 1d as described above, and the clearance of the spline fitting portion between the fixed plate 12 and the rotating member 10a is reduced. Therefore, it is possible to suppress noise and vibration when torque acts on the fitting portion of the one-way clutch 10 by the spline 15.

  FIG. 8 shows another configuration example of the one-way clutch 10. The one-way clutch 10 in the above-described specific example has a configuration in which the spline shaft 15a is provided on the base portion 12a of the fixed plate 12, whereas the one-way clutch 10 shown in FIG. As in the example shown in FIG. 5, the base portion 12 a of the fixed plate 12 is provided with a spline hole 15 b. The spline hole 15b is formed so as to protrude to the engine block 1b side (the right side in FIGS. 5 and 8). Therefore, in this case, the protruding direction of the spline hole 15b and the offset direction of the flange portion 12b with respect to the base portion 12a (the left direction in FIGS. 5 and 8) are reversed. Thus, by providing the spline hole 15b in the base portion 12a, the spline hole 15b can be easily formed by, for example, broaching.

  In the one-way clutch 10 in each of the specific examples described above, the flange portion 12b is offset to the housing 11 side (left side in the drawing) with respect to the base portion 12a of the fixed plate 12. In other words, the base portion 12a is offset to the engine block 1b side (right side in the drawing) with respect to the flange portion 12b. By using the fixed plate 12 thus offset, the axial length can be shortened toward the engine block 1b. Or the space which arrange | positions another member to the housing 11 side can be provided.

  On the other hand, in the fixed plate 12 in the one-way clutch 10 shown in FIG. 9, the flange portion 12b is offset to the engine block 1b side (right side in FIG. 9) with respect to the base portion 12a. In other words, the base portion 12a is offset to the housing 11 side (left side in FIG. 9) with respect to the flange portion 12b. By using the fixed plate 12 offset as described above, the axial length can be shortened toward the housing 11 side. Or the space which arrange | positions another member to the engine block 1b side can be provided.

  The one-way clutch 10 in each of the specific examples described above is used as a brake mechanism that restricts the rotation direction of the output shaft 1a of the engine 1 to only the forward rotation direction. The present invention can also be applied to a rotating body other than the output shaft 1a. For example, as shown in FIG. 10, the one-way clutch 10 can also be used as a brake mechanism that restricts the rotation direction of the rotation shaft 19 a of the motor 19 to only one direction.

  Alternatively, the one-way clutch 10 according to the present invention can be applied to, for example, an automatic transmission 20 mounted on a vehicle as shown in FIGS. As shown in FIG. 11, the automatic transmission 20 includes two planetary gear mechanisms 21 and 22, two clutch mechanisms 23 and 24, two brake mechanisms 25 and 26, and the one-way clutch 10. This is a configuration that has been widely used as a multi-stage automatic transmission for a vehicle. In the example shown in FIG. 12, the one-way clutch 10 is used as a brake mechanism that restricts the rotation direction of the carrier shaft 22 a of the planetary gear mechanism 22 to only one direction.

  DESCRIPTION OF SYMBOLS 1a ... Output shaft, 1b ... Engine block (fixed body), 1d ... Mounting surface, 4a ... Input shaft, 10 ... One-way clutch, 10a, 10b ... Rotating member, 12 ... Fixed plate, 12a ... Base part, 12b ... Flange part 12c ... Flange surface, 15 ... Spline, 15a ... Spline shaft, 15b ... Spline hole.

Claims (3)

A one-way clutch that engages two rotating members that rotate relative to each other only in a predetermined rotational direction to enable torque transmission between the rotating members, and is provided by a spline provided to slide in the rotational axis direction. A fixing plate that fits with any one of the rotating members is provided, and the fixing plate is fastened to and fixed to a fixing body, thereby allowing rotation in one rotation direction and rotation in the other rotation direction. In the one-way clutch used as a brake mechanism to regulate,
The fixing plate is
A base portion formed so that a spline shaft or spline hole of the spline protrudes in the direction of the rotation axis at the center portion, and a flange surface located on the outer peripheral side of the base portion and in surface contact with the mounting surface of the fixed body And a flange portion formed,
The base portion and the flange portion are offset in the rotational axis direction;
When the spline shaft is formed on the base portion, a facing direction facing the rotating member in which a spline hole fitted to the spline shaft is formed, a protruding direction of the spline shaft, and the base portion with respect to the base portion All the offset directions of the flanges match,
When the spline hole is formed in the base portion, the opposing direction facing the rotating member on which the spline shaft that fits into the spline hole is formed coincides with the offset direction, and the spline hole protrudes. Direction and the offset direction are reversed,
It is fixed to the fixed body by applying a fastening force that presses the flange surface against the mounting surface to bring it into surface contact , and
A portion of the base portion where the spline shaft or the spline hole is formed is shaped so as to be warped in a direction opposite to the offset direction;
The one-way clutch configured to be fixed to the fixed body so that the warpage is corrected and the deformation is reduced .
A one-way clutch that engages two rotating members that rotate relative to each other only in a predetermined rotational direction to enable torque transmission between the rotating members, and is provided by a spline provided to slide in the rotational axis direction. A fixing plate that fits with any one of the rotating members is provided, and the fixing plate is fastened to and fixed to a fixing body, thereby allowing rotation in one rotation direction and rotation in the other rotation direction. in word down-way clutch which is used as a brake mechanism for restricting,
The fixed plate is formed by pressing a plate-shaped material, and
Spline shaft also properly of the centered portion splines and formed the base portion so that the spline hole projecting the rotational axis direction, the mounting surface and the surface of the fixed body located on the outer peripheral side of the base portion A flange portion formed with a flange surface to be contacted,
The base portion and the flange portion are offset in the rotational axis direction;
When the spline shaft is formed on the base portion, a facing direction facing the rotating member in which a spline hole fitted to the spline shaft is formed, a protruding direction of the spline shaft, and the base portion with respect to the base portion offset direction of the flange portion is match all,
When the spline hole is formed in the base portion, the opposing direction facing the rotating member on which the spline shaft that fits into the spline hole is formed coincides with the offset direction, and the spline hole protrudes. Direction and the offset direction are reversed,
By fastening force by pressing brought into surface contact with the flange surface with respect to the mounting surface is added, Ru is fixed to the fixed body
The one-way clutch, characterized in that I have been sea urchin configuration.
The one-way clutch according to claim 1 ,
The one-way clutch, wherein the fixed plate is formed by pressing a plate-shaped material.

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