Selectable one-way clutch

Abstract

This disclosure provides a selective one-way clutch with axial miniaturization. The selective one-way clutch includes a first inner ring, a first outer ring, a shift drum, and a first selection plate. The first selection plate has: an annular plate body disposed in a first direction relative to the first outer ring; and a first cam portion extending in a second direction from the radially inner end of the plate body, lifting a first pawl member against the applied force of a first force-applying member. The radially outer end of the plate body is a first power transmission portion protruding radially outward beyond the outer peripheral surface of the first outer ring. A connecting portion for connection with a direct-acting mechanism is formed on the outer peripheral surface of the shift drum. The side of the shift drum facing the first direction is a first pressing surface axially opposite the first power transmission portion. When the shift drum moves in the first direction, the first power transmission portion is pressed in the first direction, and the lifting of the first pawl member by the first cam portion is released.

Description

Technical Field

[0001] This disclosure relates to a selective one-way clutch. Background Technology

[0002] A selectable one-way clutch has an inner ring and an outer ring arranged in a way that allows them to rotate relative to each other. Multiple teeth are formed on one of the outer circumferential surfaces of the inner ring and the inner circumferential surface of the outer ring. Furthermore, multiple claw members are provided on the other of the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. Moreover, when the claw members engage with the teeth, the inner and outer rings rotate together. In addition, in a selectable one-way clutch, an annular selection plate is provided for separating the inner and outer rings, for example, as shown in Patent Document 1.

[0003] The following describes the details of the selection plate in Patent Document 1, which comprises: a plate body disposed axially relative to the inner ring; a cam portion extending axially from the radially outer end of the plate body; and a power transmission portion extending axially from the radially inner end of the plate body. The selection plate is configured to be movable axially. The power transmission portion is connected to a direct-acting mechanism. Therefore, an axial load that causes the selection plate to move axially is transmitted to the power transmission portion. When the direct-acting mechanism operates and the selection plate moves axially to the other side, the cam portion lifts the pawl member. This disengages the pawl member from the teeth.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2020-118250

[0007] Furthermore, in the aforementioned Patent Document 1, the power transmission section of the selection plate extends axially from the plate body in one direction (opposite to the cam section). Therefore, the selectable one-way clutch is enlarged in the axial direction. Summary of the Invention

[0008] This disclosure is made in view of the foregoing, and its object is to provide a selective one-way clutch that can achieve axial miniaturization.

[0009] To achieve the above objectives, one embodiment of the present disclosure provides a selective one-way clutch comprising: a first inner ring, formed in an annular shape; a first outer ring, formed in an annular shape, with the first inner ring disposed inside the first outer ring; a shift drum, formed in an annular shape, with the first inner ring and the first outer ring disposed inside the shift drum; and a first selection plate for separating the first inner ring from the first outer ring. A direction parallel to the rotation axis of the first inner ring is defined as the axial direction. One side of the axial direction is defined as a first direction. The other side of the axial direction is defined as a second direction. A plurality of first teeth are formed on one of the outer peripheral surfaces of the first inner ring and the inner peripheral surface of the first outer ring. A tilting first claw member and a first force-applying member for applying force to the first claw member toward the first teeth are provided on the other side of the outer peripheral surface of the first inner ring and the inner peripheral surface of the first outer ring. The first selection plate comprises: an annular plate body disposed relative to the first outer ring in the first direction; and a first cam portion extending from the radially inner end of the plate body toward the second direction, lifting the first claw member against the force applied by the first force-applying member. The radially outer end of the plate body is a first power transmission portion that protrudes radially outward from the outer peripheral surface of the first outer ring. A connecting portion for connection with the direct-acting mechanism is formed on the outer peripheral surface of the shift drum. The side of the shift drum facing the first direction is a first pressing surface that opposes the first power transmission portion in the axial direction. When the shift drum moves in the first direction, the first power transmission portion is pressed in the first direction, and the lifting of the first cam portion against the first pawl member is released.

[0010] Invention Effects

[0011] According to the selective one-way clutch of this disclosure, the part (first power transmission part and shift drum) for connecting with the direct drive mechanism is arranged in a second direction relative to the main body of the plate, thereby miniaturizing it. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the selective one-way clutch of Embodiment 1, cut along the central axis.

[0013] Figure 2 This is a side view of the selected one-way clutch of Embodiment 1 with the hub removed, viewed from the second direction.

[0014] Figure 3 This is a perspective view of the first outer ring body and hub of Embodiment 1 from a second oblique view.

[0015] Figure 4 This is a perspective view of the first retainer of Embodiment 1 viewed from the first direction.

[0016] Figure 5This is a cross-sectional view of the first claw member of Embodiment 1, cut along a direction orthogonal to the central axis. More specifically... Figure 9 A cross-sectional view along the V-V line.

[0017] Figure 6 This is a cross-sectional view showing the hub mounting hole of Embodiment 1 cut along the axial direction; more specifically, it is a cross-sectional view along the axial direction. Figure 2 A sectional view showing the cut along line VI-VI.

[0018] Figure 7 This is a perspective view of the first selection plate of Embodiment 1 viewed from a second direction.

[0019] Figure 8 This is a cross-sectional view showing the spring hole of the selection plate in Embodiment 1 cut along the axial direction. More specifically, it is a cross-sectional view along the axial direction. Figure 2 A sectional view showing the situation where the section is cut along line VIII-VIII.

[0020] Figure 9 This is a cross-sectional view of the torque cut-off state of the selective one-way clutch in Embodiment 1, specifically along... Figure 2 A cross-sectional view showing the situation where the IX-IX line is cut.

[0021] Figure 10 This is a cross-sectional view of the torque transmission state of the selective one-way clutch in Embodiment 1.

[0022] Figure 11 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, cut along the central axis.

[0023] Figure 12 This is a cross-sectional view of the selective one-way clutch of embodiment 2, cut along the rivet in the axial direction.

[0024] Figure 13 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, cut axially along the first pin.

[0025] Figure 14 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, cut axially along the fourth pin.

[0026] Figure 15 This is a cross-sectional view of the case where the claw portions of the first claw member and the second claw member are cut axially in an overlapping manner in the selective one-way clutch of Embodiment 2.

[0027] Figure 16 This is a cross-sectional view of the state in which torque is transmitted between the first inner ring and the first outer ring in the selective one-way clutch of Embodiment 2.

[0028] Figure 17This is a cross-sectional view of the state in which torque is transmitted between the second inner ring and the second outer ring in the selective one-way clutch of Embodiment 2.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1: First inner ring; 3: First tooth; 10: First outer ring; 17, 217: Fitting part; 18: First triangular part; 19: First trapezoidal part; 20: First valley part; 21: Protrusion; 30: First retainer; 31: Main body part; 32: Side wall; 36: Spring retainer part; 38: Opening part; 38a: Closed wall; 40: First claw member; 41: First helical spring (first force-applying member); 43, 243: Claw part; 50: Hub; 51: Connecting wall; 54: Second triangular part; 55: Second trapezoidal part; 56: Second valley part; 59: Rivet; 60: First selection plate; 61, 261: Plate body; 62, 262: Cam part; 63: First power transmission part; 70: First connecting mechanism; 71: First pin; 72, 272: Retaining ring; 7 3: First helical spring for selector plate; 75: Head; 80, 80A: Shift drum; 81: First pressing surface; 83: Groove; 85: Recess; 86, 281: First locking groove; 87, 282: Second locking groove; 88: Plunger; 100, 100A: Selective one-way clutch; 101: Input shaft; 102, 303: Output shaft; 201: Second inner ring; 203: Second tooth; 210: Second outer ring; 211: Second outer ring body; 230: Second retainer; 240: Second claw component; 241: Second helical spring; 260: Second selector plate; 263: Second power transmission part; 270: Second connecting mechanism; 271: Second pin; 273: Second helical spring for selector plate; 280: Second pressing surface; 283: Third locking groove. Detailed Implementation

[0031] The embodiments for implementing this disclosure will be described in detail with reference to the accompanying drawings. This disclosure is not limited by the content described below. Furthermore, the constituent elements described below include substantially the same constituent elements that are readily conceived by those skilled in the art. Moreover, the constituent elements described below can be appropriately combined.

[0032] (Implementation Method 1)

[0033] Figure 1This is a cross-sectional view of the selective one-way clutch of Embodiment 1, taken along its central axis. The selective one-way clutch 100 is a device that transmits or disconnects torque by being positioned on the torque transmission path. Such a selective one-way clutch 100 is used, for example, in a vehicle drive system mounted in a vehicle. The vehicle drive system is a device that generates torque from a drive source such as an engine, transmits that torque to the drive wheels, and causes the drive wheels to rotate. It should be noted that the selective one-way clutch 100 of this disclosure can also be used in devices other than vehicle drive systems.

[0034] like Figure 1 As shown, in this embodiment, a selective one-way clutch 100 is clamped between an input shaft 101 and an output shaft 102. The input shaft 101 is a cylindrical component. The output shaft 102 is disposed coaxially with the input shaft 101. Furthermore, a portion of the output shaft 102 is disposed inside the input shaft 101.

[0035] The selective one-way clutch 100 of Embodiment 1 includes: a first inner ring 1; a first outer ring 10; a hub 50 disposed inside the first inner ring 1; a first selection plate 60 for separating the first inner ring 1 from the first outer ring 10; and a shift drum 80 disposed outside the first outer ring 10.

[0036] The following describes the details of the selective one-way clutch 100. The direction parallel to the central axis O of the first inner ring 1 is referred to as the axial direction. The side of the axial direction where the first selection plate 60 is located when viewed from the first outer ring 10 is referred to as the first direction X1. The direction opposite to the first direction X1 is referred to as the second direction X2. The direction orthogonal to the central axis O is referred to as the radial direction.

[0037] Figure 2 This is a side view of the selected one-way clutch of Embodiment 1 with the hub removed, viewed from the second direction. The direction of rotation will be described based on the view from the second direction X2. The case where the rotation direction is left-handed (counter-clockwise) when viewed from the second direction X2 is referred to as the first rotation direction L1. Furthermore, the case where the rotation direction is right-handed (clockwise) when viewed from the second direction X2 is referred to as the second rotation direction L2.

[0038] like Figure 2 As shown, the first inner ring 1 is a ring-shaped component. An input shaft 101 (see reference) is inserted inside the first inner ring 1. Figure 1 A plurality of internal splines 2 are formed on the inner circumferential surface of the first inner ring 1. Therefore, the first inner ring 1 is splinedly engaged with the input shaft 101. Furthermore, when the input shaft 101 rotates, the first inner ring 1 rotates about the central axis O.

[0039] A plurality of first teeth 3 protruding radially outward are formed on the outer circumferential side of the first inner ring 1. The plurality of first teeth 3 are arranged at equal intervals in the circumferential direction. Furthermore, as... Figure 1 As shown, multiple first teeth 3 are formed only at the ends of the second direction X2 in the outer peripheral surface 4 of the first inner ring 1.

[0040] like Figure 2 As shown, the first outer ring 10 includes a first outer ring body 11, a first retainer 30, a first claw member 40, and a first helical spring 41 (see reference). Figure 5 wait).

[0041] Figure 3 This is a perspective view of the first outer ring body and hub of Embodiment 1, viewed from a second oblique angle. (As shown...) Figure 3 As shown, the first outer ring body 11 is an annular component, coaxially disposed with the first inner ring 1. Two outer ring fixing holes 12 and three outer ring spring holes 13 are formed in the first outer ring body 11. The outer ring fixing holes 12 and outer ring spring holes 13 respectively penetrate the first outer ring body 11 axially. Furthermore, the first outer ring body 11 has a first side surface 14 facing the first direction X1 (see reference). Figure 1 ) and the second side 15 facing the second direction X2.

[0042] A positioning protrusion 16 protruding in the second direction X2 and an annular fitting portion 17 are formed on the second side surface 15 of the first outer ring body 11. The positioning protrusion 16 is formed to be longer in the circumferential direction.

[0043] The fitting portion 17 extends circumferentially along the radially outer edge of the second side surface 15, forming a ring. A plurality of first triangular portions 18 and three first trapezoidal portions 19 protruding radially inward are formed on the inner circumferential side of the fitting portion 17.

[0044] The circumferential width of the first triangular portion 18 gradually narrows radially inward, and is roughly triangular when viewed axially. The circumferential width of the first trapezoidal portion 19 is larger than that of the first triangular portion 18, and is roughly trapezoidal when viewed axially.

[0045] First triangular portions 18 are arranged adjacent to each other on both sides of the first trapezoidal portion 19 in the circumferential direction. The distance between the first trapezoidal portion 19 and the first triangular portions 18 arranged in the first rotational direction L1 is larger than the distance between the first triangular portions 18 arranged in the second rotational direction L2. Therefore, a first valley portion 20 with a larger circumferential distance is formed in the first rotational direction L1 of the first trapezoidal portion 19.

[0046] Three protrusions 21 protruding radially outward are formed on the outer peripheral surface 11a of the first outer ring body 11. The three protrusions 21 are arranged at 120° intervals. A claw member receiving portion 22 and a retainer receiving portion 23 are formed on the inner peripheral side of the first outer ring body 11. The claw member receiving portion 22 and the retainer receiving portion 23 have their inner peripheral portion cut off from the first outer ring body 11, opening radially inward and axially to both sides.

[0047] like Figure 1 As shown, the first retainer 30 is a ring-shaped component formed with the central axis O as the center, and the cross-section cut along the axial direction is L-shaped. The first retainer 30 has a main body 31 disposed on the radially inner side of the first outer ring 10 and a sidewall 32 disposed on the first outer ring 10 in the second direction X2.

[0048] Figure 4 This is a perspective view of the first retainer of Embodiment 1 as seen from a first direction. (As shown) Figure 4 As shown, six elongated holes 33 extending circumferentially are formed in the sidewall 32. The positioning protrusions 16 of the first outer ring body 11 are fitted into the elongated holes 33 (see reference). Figure 2 ).

[0049] Furthermore, six retainer fixing holes 34 and three retainer spring holes 35 are formed on the side wall 32. The retainer fixing holes 34 overlap axially with the outer ring fixing holes 12 of the first outer ring body 11 (see reference). Figure 6 The retainer spring hole 35 overlaps axially with the outer ring spring hole 13 of the first outer ring body 11 (see reference). Figure 8 Three spring retaining portions 36 protruding radially outward are formed on the outer peripheral surface of the main body portion 31.

[0050] Figure 5 This is a cross-sectional view of the first claw member of Embodiment 1, cut along a direction orthogonal to the central axis. More specifically... Figure 9 A cross-sectional view along the V-V line. (Example) Figure 5 As shown, the spring retainer 36 is disposed in the retainer receiving portion 23 of the first outer ring body 11. A through hole 37 extending radially is formed in the spring retainer 36. Furthermore, the first helical spring 41 is disposed in the through hole 37.

[0051] The main body 31 extends along the inner circumferential surface of the first outer ring main body 11. The main body 31 closes the radially inner side of the claw member receiving portion 22. An opening 38 is formed between the main body 31 and the spring retaining portion 36. The distance between the main body 31 and the spring retaining portion 36 is H1.

[0052] like Figure 4As shown, a closing wall 38a is provided in the first direction X1 of the opening 38 to close the opening 38. On the other hand, a notch 39 is formed in the first retainer 30 to open the opening 38 and the claw member receiving portion 22 in the second direction X2. Therefore, as Figure 2 As shown, the opening 38 and the claw member receiving portion 22 are open to the second direction X2 through the notch 39, and the first claw member 40 can be disposed in the opening 38 and the claw member receiving portion 22 by passing through the notch 39.

[0053] like Figure 5 As shown, the first claw member 40 has: a shaft portion 42, which is received in the claw member receiving portion 22; a claw portion 43, which protrudes from the shaft portion 42; and a protrusion portion 44, which protrudes from the shaft portion 42 in the opposite direction to the claw portion 43.

[0054] The outer diameter of the shaft portion 42 is circular when viewed axially. The outer diameter of the shaft portion 42 is larger than the width H1 of the opening portion 38 (see reference). Figure 5 Therefore, the shaft 42 is rotatably clamped between the main body 31 and the spring retainer 36 without falling out of the opening 38.

[0055] The claw 43 passes through the opening 38 and is positioned radially inward of the spring retainer 36. The claw 43 is always subjected to a radially inward force by the first helical spring 41.

[0056] The protrusion 44 has a transmission surface 45 that faces in the opposite direction to the direction in which the claw portion 43 is disposed when viewed from the protrusion 44. The transmission surface 45 is opposite to the inner surface 22a of the claw member receiving portion 22.

[0057] like Figure 1 As shown, the hub 50 is annular with the central axis O as the center. The output shaft 102 is inserted into the inner circumference of the hub 50. An internal spline 50a is formed on the inner circumferential surface of the hub 50, and the hub 50 and the output shaft 102 are splinedly engaged.

[0058] like Figure 1 As shown, a connecting wall 51 extending radially outward is formed on the outer peripheral surface of the hub 50. The connecting wall 51 extends circumferentially along the outer peripheral surface of the hub 50 and is formed in an annular shape. The connecting wall 51 has a first surface 52 facing a first direction X1 and a second surface 53 facing a second direction X2.

[0059] The connecting wall 51 is disposed in a second direction X2 relative to each of the first inner ring 1 and the first outer ring 10. The connecting wall 51 fits into the inner side of the fitting portion 17 of the first outer ring body 11. Thus, the hub 50 is connected to the first outer ring body 11.

[0060] like Figure 3As shown, a plurality of second triangular portions 54 and three second trapezoidal portions 55 protruding radially outward are formed on the outer periphery of the connecting wall 51. The circumferential width of the second triangular portions 54 gradually narrows radially outward and is approximately triangular when viewed axially. The second triangular portions 54 fit between the first triangular portions 18. Therefore, the first outer ring body 11 and the hub 50 are connected to each other in a manner that does not involve relative rotation.

[0061] The second trapezoidal portion 55 has a larger circumferential width than the second triangular portion 54, and is approximately trapezoidal when viewed axially. A second valley portion 56 with a larger circumferential spacing is formed between the second trapezoidal portion 55 and the second triangular portion 54 disposed in the second rotational direction L2. The second trapezoidal portion 55 fits into the first valley portion 20 of the first outer ring body 11. Furthermore, the first trapezoidal portion 19 fits into the second valley portion 56.

[0062] It should be noted that when fitting the connecting wall 51 into the fitting portion 17 of the first outer ring body 11, the second surface 53 of the connecting wall 51 may be mistakenly positioned facing the first outer ring body 11 instead of the first surface 52. In this case, the second valley portion 56 is not positioned in the second rotational direction L2 of the second trapezoidal portion 55, but in the first rotational direction L1. Therefore, when it is desired to fit the connecting wall 51 into the fitting portion 17, the first trapezoidal portion 19 and the second trapezoidal portion 55 overlap axially, and the connecting wall 51 does not fit into the fitting portion 17. Based on the above, incorrect assembly (hereinafter referred to as misassembly) of the hub 50 and the first outer ring body 11 can be avoided.

[0063] like Figure 3 As shown, six hub fixing holes 57 and three hub spring holes 58 are formed in the connecting wall 51, which are axially extending.

[0064] Figure 6 This is a cross-sectional view showing the hub mounting hole of Embodiment 1 cut along the axial direction; more specifically, it is a cross-sectional view along the axial direction. Figure 2 A sectional view showing the cut along line VI-VI. For example... Figure 6 As shown, the hub mounting hole 57 is axially positioned relative to the retainer mounting hole 34 and the outer ring mounting hole 12. Furthermore, a shaft portion 59a in which rivets 59 are inserted is located in the hub mounting hole 57, the retainer mounting hole 34, and the outer ring mounting hole 12. The head 59b of the rivet 59 abuts against the connecting wall 51 from the second direction X2.

[0065] Furthermore, a riveting portion 59c is formed at the end of the shaft portion 59a in the first direction X1 of the rivet 59. This is achieved by riveting the end of the shaft portion 59a in the first direction X1 of the rivet 59. The riveting portion 59c abuts against the first outer ring body 11 from the first direction X1. Therefore, the first outer ring body 11, the first retainer 30, and the hub 50 are integrated. Additionally, the connecting wall 51 closes the notch 39 of the first retainer 30 from the second direction X2 (see reference). Figure 4 Therefore, the first claw member 40 will not detach from the claw member receiving portion 22.

[0066] Figure 7 This is a perspective view of the first selection plate of Embodiment 1 viewed from a second direction. The first selection plate 60 is formed in a ring shape with the central axis O as the center. The first selection plate 60 includes: a plate body 61 disposed in a first direction X1 of the first outer ring 10; and a cam portion 62 extending from the radially inner end of the plate body 61 toward a second direction X2. Three selection plate spring holes 64 are formed in the plate body 61.

[0067] Figure 8 This is a cross-sectional view showing the spring hole of the selection plate in Embodiment 1 cut along the axial direction. More specifically, Figure 2 A sectional view along line VIII-VIII. (See example...) Figure 8 As shown, the spring hole 64 for the selector plate overlaps axially with the spring hole 13 for the outer ring, the spring hole 35 for the retainer, and the spring hole 58 for the hub.

[0068] The first selection plate 60 is connected to the first outer ring 10 via a first connecting mechanism 70. The first connecting mechanism 70 includes a first pin 71, a retaining ring (second anti-detachment part) 72, and a first helical spring for the selection plate (first force-applying member for the selection plate) 73. The first pin 71 is integrally formed with a rod-shaped shaft portion 74 and a head (first anti-detachment part) 75 provided at one end of the shaft portion 74.

[0069] The shaft portion 74 of the first pin 71 is inserted into the hub spring hole 58 from the second direction X2. Furthermore, the shaft portion 74 extends axially across the retainer spring hole 35, the outer ring spring hole 13, and the selector plate spring hole 64. The end of the shaft portion 74 in the first direction X1 protrudes further in the first direction X1 than the first selector plate 60. Moreover, a retaining ring 72 is fitted to the end of the shaft portion 74 in the first direction X1.

[0070] An annular base 79 protruding radially inward is formed at the end of the inner circumferential surface of the outer ring spring hole 13 in the first direction X1. A first helical spring 73 for the selector plate passes through the shaft portion 74 of the first pin 71 and is accommodated in the outer ring spring hole 13. One end of the first helical spring 73 for the selector plate abuts against the head 75 of the first pin 71. The other end of the first helical spring 73 for the selector plate abuts against the base 79.

[0071] Furthermore, the selection plate is assembled in a compressed state using the first helical spring 73. Therefore, the first helical spring 73 always applies force to the head 75 of the first pin 71 in the second direction X2. That is, the first selection plate 60 is always pressed against the retaining ring 72 in the second direction X2. Therefore, when the load in the first direction X1 is not acting on the plate body 61, the plate body 61 is in a state of abutting against the first side surface 14 of the first outer ring 10.

[0072] Furthermore, the outer diameter of the plate body 61 is larger than the outer diameter of the first outer ring body 11. Therefore, the radially outer end of the plate body 61 becomes a first power transmission portion 63 that protrudes radially outward more than the outer peripheral surface 11a of the first outer ring body 11. Moreover, the entire circumferential direction of the radially outer end of the plate body 61 protrudes radially outward more than the first outer ring 10. Therefore, the first power transmission portion 63 is formed in a ring shape.

[0073] Figure 9 This is a cross-sectional view of the torque cut-off state of the selective one-way clutch in Embodiment 1, specifically... Figure 2 A sectional view along line IX-IX. (e.g.) Figure 9 As shown, the cam portion 62 is disposed between the first inner ring 1 and the first outer ring 10. Furthermore, with the plate body 61 abutting against the first side surface 14 of the first outer ring 10, the cam portion 62 abuts against the radially inner side of the claw portion 43, lifting the claw portion 43 radially outward. The cam portion 62 is located radially inner and inclined towards the second direction X2. Therefore, the tip of the cam portion 62 easily enters the radially inner side of the claw portion 43.

[0074] The shift drum 80 is an annular component, with a first outer ring 10, a first inner ring 1, and a hub 50 disposed on its inner side. The axial length of the shift drum 80 is approximately the same as the axial length of the first outer ring 10. The side of the shift drum 80 in the first direction X1 becomes a first pressing surface 81 opposite to the first power transmission part 63.

[0075] An annular recess (connecting portion) 85, which is radially recessed inward, is formed on the outer peripheral surface 84 of the shift drum 80. A shift fork 110, which is connected to the direct drive mechanism, is inserted into this recess 85. When the direct drive mechanism is driven, the shift fork 110 moves axially, and the shift drum 80 moves axially accordingly.

[0076] The inner circumferential surface 82 of the shift drum 80 slides freely in the axial direction against the outer circumferential surface 11a of the first outer ring 10. For example... Figure 2As shown, a groove 83 that is radially recessed and axially extended is formed on the inner circumferential surface 82 of the shift drum 80. A protrusion 21 of the first outer ring body 11 is disposed in the groove 83. Therefore, the shift drum 80 can move axially relative to the first outer ring 10, but cannot rotate relative to it.

[0077] like Figure 9 As shown, a first locking groove 86 and a second locking groove 87 are formed on the inner circumferential surface 82 of the shift drum 80, which are recessed radially outward and extend in the circumferential direction. The first locking groove 86 is formed at the central portion of the shift drum 80 in the axial direction. The second locking groove 87 is positioned further in a second direction X2 than the first locking groove 86. The first locking groove 86 and the second locking groove 87 are both formed in annular shape.

[0078] A plunger 88 is provided radially inside the shift drum 80. Although not specifically illustrated, three plungers 88 are provided at 120° intervals. The plunger 88 is disposed in a hole 10b formed on the outer peripheral surface of the first outer ring 10. The plunger 88 is located at the center of the width direction of the first outer ring 10. Furthermore, the ball of the plunger 88 enters the first locking groove 86. Additionally, when the shift drum 80 moves in the first direction X1, the ball of the plunger 88 enters the second locking groove 87 (see reference). Figure 10 ).

[0079] Furthermore, with the ball of the plunger 88 in the first locking groove 86, the first pressing surface 81 of the shift drum 80 does not press the first power transmission section 63. Therefore, no load in the first direction X1 is generated on the first selection plate 60.

[0080] Next, the operation of the selective one-way clutch 100 of Embodiment 1 will be described. First, the initial state of the selective one-way clutch 100 will be described. It should be noted that the initial state of the selective one-way clutch 100 refers to the state in which the transmission of torque is cut off. Furthermore, the direction of rotation of the input shaft 101 is the first rotation direction L1. Therefore, the first inner ring 1 also rotates in the first rotation direction L1.

[0081] like Figure 9 As shown, the initial state of the selectable one-way clutch 100 is that the ball of the plunger 88 enters the first locking groove 86. Therefore, the first pressing surface 81 of the shift drum 80 is in a state where it only abuts against the first selector plate 60. Furthermore, the cam portion 62 of the first selector plate 60 lifts the first pawl member 40 (see also...). Figure 5 That is to say, the claw portion 43 of the first claw member 40 does not mesh with the first tooth portion 3. Therefore, torque is not transmitted to the first outer ring 10, and the hub 50 and the output shaft 102 do not rotate.

[0082] It should be noted that when the torque is cut off, the ball of the plunger 88 enters the first locking groove 86, so even if the direct-acting mechanism is not started, the position of the shift drum 80 will be prevented from shifting.

[0083] Figure 10 This is a cross-sectional view of the torque transmission state of the selective one-way clutch in Embodiment 1. On the other hand, when the direct-acting mechanism drives the shift fork 110 to move in the first direction X1, the shift drum 80 also moves in the first direction X1. The first pressing surface 81 of the shift drum 80 overcomes the force applied by the first coil spring 73 of the selector plate and presses the first power transmission section 63 in the first direction X1. As a result, the first selector plate 60 moves in the first direction X1, and the lifting of the cam section 62 against the pawl section 43 is released.

[0084] Furthermore, the claw 43 is always subjected to radial inward force by the first helical spring 41. Therefore, the claw 43 enters between the first teeth 3 (see reference). Figure 5 (Imaginary line K40). Thus, the claw portion 43 is pressed against the first tooth portion 3. Then, the transmission surface 45 of the protrusion 44 of the first claw member 40 presses the inner surface 22a of the claw member receiving portion 22 towards the first rotational direction L1. As a result, torque is transmitted to the first outer ring 10, and the first outer ring 10 and the hub 50 rotate in the first rotational direction L1. Consequently, the output shaft 102 connected to the hub 50 also rotates in the first rotational direction L1. Thus, when the shift drum 80 moves in the first direction X1, the selective one-way clutch 100 transmits torque.

[0085] It should be noted that when the shift drum 80 moves in the first direction X1, the selector plate is subjected to the force of the first helical spring 73. Therefore, the direct-acting mechanism needs to continuously generate power to prevent the shift drum 80 from moving in the second direction X2, resulting in a large load. On the other hand, in this embodiment, when the shift drum 80 moves in the first direction X1, the ball of the plunger 88 enters the second locking groove 87, making it difficult for the shift drum 80 to move in the second direction X2. Therefore, the load on the direct-acting mechanism is reduced.

[0086] Furthermore, during torque transmission, the shift drum 80 cannot rotate relative to the first outer ring 10, and therefore rotates in the first rotation direction L1. On the other hand, the shift fork 110 does not rotate, so the recess 85 of the shift drum 80 slides relative to the shift fork 110.

[0087] Then, when the direct-acting mechanism drives the shift fork 110 to move in the second direction X2, the shift drum 80 also moves in the second direction X2. The ball of the plunger 88 enters the first locking groove 86, and the shift drum 80 returns to its initial position. This releases the first selector plate 60 from the pressure of the shift drum 80. Then, the first selector plate 60 moves in the second direction X2 by the force applied from the selector plate by the first coil spring 73.

[0088] Here, the first claw member 40 is sandwiched between the first tooth 3 and the inner surface 22a (see reference). Figure 5 (Imaginary line K40). That is, the clamping force of the first claw member 40 acts between the first tooth 3 and the inner surface 22a. Therefore, by applying force with the first helical spring 73 to the selection plate, the top end of the cam 62 enters the radially inner side of the claw 43, but when the torque transmitted from the first inner ring 1 to the first outer ring 10 is large, the claw 43 cannot be lifted. Therefore, the torque transmission continues from the first inner ring 1 to the first outer ring 10.

[0089] On the other hand, when the torque transmitted from the first inner ring 1 to the first outer ring 10 is small, the clamping force acting on the first claw member 40 also decreases. Therefore, the first selection plate 60 moves in the second direction X2, and the cam portion 62 lifts the claw portion 43. As a result, the engagement between the first claw member 40 and the first tooth portion 3 is disengaged, and the torque transmission is interrupted. Furthermore, the first selection plate 60 abuts against the first side surface 14 of the first outer ring 10.

[0090] It should be noted that when the input shaft 101 rotates in the second rotation direction L2, the claw 43 engages with the first tooth 3, and the first claw member 40 does not mesh with the first tooth 3. Therefore, when the input shaft 101 rotates in the second direction X2, torque is not transmitted to the first outer ring 10.

[0091] As described above, according to Embodiment 1, the first power transmission portion 63 of the first selection plate 60 protrudes radially outward relative to the plate body 61. Furthermore, the shift drum 80, which presses against the first power transmission portion 63, is positioned radially outward of the first outer ring 10. Therefore, neither the first power transmission portion 63 nor the shift drum 80 protrudes from the plate body 61 of the first selection plate 60 in the first direction X1, thus miniaturizing the selective one-way clutch 100 in the axial direction.

[0092] Furthermore, when the first outer ring 10 rotates, the shift drum 80 rotates together with the first outer ring 10. Therefore, wear between the outer peripheral surface 11a of the first outer ring 10 and the inner peripheral surface 82 of the shift drum 80 is avoided.

[0093] Furthermore, in the torque transmission state (refer to...) Figure 10 Switch to torque cut-off state (refer to) Figure 9When the first selection plate 60 moves in the second direction X2 by the force applied by the first helical spring 73, the cam portion 62 lifts the claw portion 43. Assuming that the first selection plate 60 is forcibly moved in the second direction X2 by the power generated by the direct-acting mechanism, if the clamping force acting on the first claw member 40 is large, the cam portion 62 will also lift the claw portion 43. As a result, the load acting on the cam portion 62 and the claw portion 43 increases, potentially causing deformation. In this embodiment, when the clamping force acting on the first claw member 40 is small, the cam portion 62 lifts the claw portion 43; therefore, the load acting on the cam portion 62 and the claw portion 43 is smaller, and deformation is less likely.

[0094] Furthermore, due to the second trapezoidal portion 55 and the second valley portion 56, the shape of the outer diameter of the connecting wall 51 viewed from the first direction X1 is different from the shape viewed from the second direction X2. Therefore, misassembly of the connecting wall 51 (hub 50) and the first outer ring body 11 (first outer ring 10) can be prevented.

[0095] Next, the selective one-way clutch 100A of Embodiment 2 will be described. In the following description, the differences from Embodiment 1 will be explained in detail.

[0096] (Implementation Method 2)

[0097] Figure 11 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, taken along its central axis. (Example) Figure 11 As shown, the selective one-way clutch 100A of Embodiment 2 is sandwiched between two input shafts (first input shaft 301 and second input shaft 302) and one output shaft 303.

[0098] The selective one-way clutch 100A of Embodiment 2 differs from Embodiment 1 in that it also includes a second inner ring 201, a second outer ring 210, and a second selection plate 260. The second inner ring 201, the second outer ring 210, and the second selection plate 260 will be described below. Furthermore, as... Figure 11 As shown, the imaginary plane that overlaps with the connecting wall 51 is called the imaginary plane K51.

[0099] The second inner ring 201 is formed symmetrically to the first inner ring 1, with an imaginary plane K51 as the reference. Therefore, multiple internal splines 202 are formed on the inner circumferential surface of the second inner ring 201. The second input shaft 302 is splined and engaged with the inner circumferential side of the second inner ring 201. Furthermore, multiple second teeth 203 are formed on the outer circumferential surface 204 of the second inner ring 201. It should be noted that the rotational speed of the second input shaft 302 is different from the rotational speed of the first input shaft 301 connected to the first inner ring 1.

[0100] The second outer ring 210 includes a second outer ring body 211, a second retainer 230, and a second claw member 240 (see reference). Figure 15 ) and the second helical spring 241 (refer to Figure 15 Furthermore, each component of the second outer ring 210 is formed symmetrically with respect to each component of the first outer ring 10, with reference to the imaginary plane K51.

[0101] Therefore, similar to the first outer ring body 11, a fitting portion 217 is formed on the side 215 of the second outer ring body 211 in the first direction X1, for the connecting wall 51 of the hub 50 to fit into the inner circumferential side. In addition, similar to the fitting portion 17 of the first outer ring body 11, a plurality of third mountain portions (not shown), three third trapezoidal portions (not shown), and three third valley portions (not shown) are formed on the inner circumferential side of the fitting portion 217.

[0102] A second triangular section 54 (see reference) is fitted between the third mountain section (not shown) and the connecting wall 51. Figure 3 The third trapezoidal part (not shown) fits into the second valley part 56 (see reference). Figure 3 A second trapezoidal portion 55 is fitted into the third valley section (not shown) (see reference). Figure 3 Based on the above, the second outer ring body 211 is connected in a manner that prevents it from rotating relative to the hub 50. Furthermore, if the second outer ring body 211 is incorrectly fitted from the first direction X1 of the hub 50, the second trapezoidal portion 55 and the third trapezoidal portion of the hub 50 will overlap axially and not fit together. Therefore, similar to the first outer ring body 11, misassembly to the hub 50 is prevented.

[0103] The second selection plate 260 is formed symmetrically with respect to the imaginary plane K51. Therefore, the second selection plate 260 has: a plate body 261 disposed in the second direction X2 of the second outer ring 210; a cam portion 262; and a claw portion 243 that lifts the second claw member 240 (see reference). Figure 15 ); and the second power transmission part 263, which protrudes radially outward from the outer peripheral surface 211a of the second outer ring body 211.

[0104] As described above, the second inner ring 201, the second outer ring 210, and the second selection plate 260 are symmetrical about the imaginary plane K51. However, the structure for fixing the first outer ring 10 and the second outer ring 210 to the hub 50 is not symmetrical. Furthermore, the structure for fixing the first selection plate 60 and the second selection plate 260 is also not symmetrical. The non-symmetrical structures will be described below.

[0105] Figure 12 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, cut axially along the rivet. (Example) Figure 12As shown, an axially extending outer ring fixing hole 212 is formed in the second outer ring body 211. An axially extending retainer fixing hole 234 is formed in the second retainer 230. An axially extending insertion hole 267 is formed in the second selector plate 260. The outer ring fixing hole 212, the retainer fixing hole 234, and the insertion hole 267 are axially arranged relative to the hub fixing hole 57, the retainer fixing hole 34, and the outer ring fixing hole 12.

[0106] The rivet 59 is inserted into the insertion hole 267 in the second direction X2. The shaft portion 59a of the rivet 59 extends axially across the outer ring fixing hole 212, the retainer fixing hole 234, the hub fixing hole 57, the retainer fixing hole 34, and the outer ring fixing hole 12. The head 59b of the rivet 59 abuts against the side 214 of the second outer ring body 211 in the second direction X2 from the second direction X2.

[0107] A riveting portion 59c formed at the end of the shaft portion 59a in the first direction X1 abuts against the first outer ring body 11 from the first direction X1. Therefore, the first outer ring body 11, the first retainer 30, the hub 50, the second outer ring body 211, and the second retainer 230 are integrated. That is, the first outer ring 10, the second outer ring 210, and the hub 50 rotate together.

[0108] Figure 13 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, taken axially along the first pin. Figure 13 As shown, a spring hole 213 for the outer ring, which extends axially, is formed in the second outer ring body 211. A spring hole 235 for the retainer, which extends axially, is formed in the second retainer 230. A spring hole 264 for the selector plate, which extends axially, is formed in the second selector plate 260. The spring hole 264 for the selector plate, the spring hole 213 for the outer ring, and the spring hole 235 for the retainer overlap axially with the spring hole 58 for the hub, the spring hole 35 for the retainer, the spring hole 13 for the outer ring, and the spring hole 64 for the selector plate.

[0109] The first pin 71 is inserted into the spring hole 264 for the selector plate from the second direction X2. Furthermore, the shaft portion 74 of the first pin 71 extends axially across the spring hole 213 for the outer ring, the spring hole 235 for the retainer, the spring hole 58 for the hub, the spring hole 35 for the retainer, the spring hole 13 for the outer ring, and the spring hole 64 for the selector plate. A retaining ring 72 is provided at the end of the shaft portion 74 in the first direction X1. The retaining ring 72 abuts against the first selector plate 60 from the first direction X1.

[0110] One end of the first helical spring 73 abuts against the head 75 of the first pin 71. The other end of the first helical spring 73 abuts against the base 79. The first helical spring 73 is assembled in a compressed state. Therefore, the first selection plate 60 is always pressed by the retaining ring 72 in the second direction X2, so that the plate body 61 abuts against the first outer ring 10.

[0111] Figure 14 This is a cross-sectional view of the selective one-way clutch of Embodiment 2, taken axially along the fourth pin. (Example) Figure 14 As shown, the second selection plate 260 is fixed by the second connecting mechanism 270. The second connecting mechanism 270 includes a second pin 271, a retaining ring 272, and a second helical spring 273 for the selection plate.

[0112] A spring hole 13A for the outer ring is formed in the first outer ring body 11. A spring hole 35A for the retainer is formed in the first retainer 30. A spring hole 64A for the selector plate is formed in the first selector plate 60. A spring hole 58A for the hub is formed in the connecting wall 51 of the hub 50. A spring hole 213A for the outer ring is formed in the second outer ring body 211. A spring hole 235A for the retainer is formed in the second retainer 230. A spring hole 264A for the selector plate is formed in the second selector plate 260. The spring holes 13A, 35A, 64A, 58A, 213A, and 235A are arranged overlapping each other in the axial direction.

[0113] The second pin 271 is inserted from the first direction X1 into the spring hole 64A for the selector plate. Furthermore, the shaft portion 274 of the second pin 271 extends axially across the spring holes 13A for the outer ring, 35A for the retainer, 58A for the hub, 235A for the retainer, 213A for the outer ring, and 264A for the selector plate. A retaining ring 272 is provided at the end of the shaft portion 274 in the second direction X2. The retaining ring 272 abuts against the second selector plate 260 from the second direction X2.

[0114] The head 275 of the second pin 271 abuts against one end of the second helical spring 273 for the selection plate. The other end of the second helical spring 273 for the selection plate abuts against the base 279 formed in the spring hole 213A of the outer ring. The second helical spring 273 for the selection plate is assembled in a compressed state. Therefore, the second selection plate 260 is always pressed against the first direction X1 by the retaining ring 272, so that the plate body 261 abuts against the second outer ring 210.

[0115] Figure 15 This is a cross-sectional view of the first and second claw members in the selective one-way clutch of Embodiment 2, showing the claw portions of the first and second claw members being cut axially in an overlapping manner. Figure 15As shown, the shift drum 80A of Embodiment 2 is longer in the axial direction than the shift drum 80 of Embodiment 1, and its axial length, together with that of the first outer ring 10 and the second outer ring 210, is approximately equal. The shift drum 80A has a second pressing surface 280 facing the second direction X2 and opposing the second power transmission portion 263.

[0116] In embodiment 2, the plunger 88 is disposed on the second outer ring body 211. A first locking groove 281, a second locking groove 282, and a third locking groove 283 are formed on the inner circumferential surface 82 of the shift drum 80A. When the direct-acting mechanism is not activated, the plunger 88 is engaged in the first locking groove 281. The second locking groove 282 is disposed in the second direction X2 of the first locking groove 281. The third locking groove 283 is disposed in the first direction X1 of the first locking groove 281. It should be noted that the second locking groove 282 is open in the second direction X2.

[0117] Next, the selective one-way clutch 100A of Embodiment 2 will be described.

[0118] like Figure 15 As shown, the initial state of the selective one-way clutch 100A is that the ball of the plunger 88 enters the first locking groove 281. Furthermore, the first pressing surface 81 of the shift drum 80A is in a state where it only abuts against the first power transmission portion 63 of the first selector plate 60. That is, the cam portion 62 of the first selector plate 60 lifts the pawl portion 43 of the first pawl member 40. Therefore, torque is not transmitted from the first inner ring 1 to the first outer ring 10.

[0119] Furthermore, in the initial state of the selective one-way clutch 100A, the second pressing surface 280 of the shift drum 80A is in a state where it only abuts against the second power transmission portion 263 of the second selector plate 260. Additionally, the cam portion 262 of the second selector plate 260 lifts the pawl portion 243 of the second pawl member 240. Therefore, torque is not transmitted from the second inner ring 201 to the second outer ring 210. Based on the above, the torque of the first input shaft 301 and the second input shaft 302 is not transmitted to the output shaft 303 (see reference). Figure 11 ).

[0120] Figure 16 This is a cross-sectional view of the state in which torque is transmitted between the first inner ring and the first outer ring in the selective one-way clutch of Embodiment 2. Figure 16 As shown, when the direct-acting mechanism drives the shift fork 110 to move in the first direction X1, the first pressing surface 81 of the shift drum 80A overcomes the force applied by the first coil spring 73 of the selector plate and presses the first power transmission part 63 in the first direction X1. As a result, the first selector plate 60 moves in the first direction X1, and the lifting of the cam part 62 against the pawl part 43 is released.

[0121] The claw 43, which is radially inwardly forceped by the first helical spring 41, enters between the first teeth 3. As a result, the first claw member 40 is pressed in the first rotational direction L1, and torque is transmitted to the first outer ring 10. Then, the first outer ring 10, the second outer ring 210, and the hub 50 rotate in the first rotational direction L1, and the output shaft 303 connected to the hub 50 also rotates in the first rotational direction L1. It should be noted that when the first outer ring 10, the second outer ring 210, and the hub 50 rotate, the shift drum 80A also rotates in the first rotational direction L1.

[0122] Figure 17 This is a cross-sectional view of the state in which torque is transmitted between the second inner ring 201 and the second outer ring 210 in the selective one-way clutch of Embodiment 2. Figure 17 As shown, when the direct-acting mechanism drives the shift fork 110 to move in the second direction X2, the second pressing surface 280 of the shift drum 80A overcomes the force applied by the second coil spring 273 of the selector plate and presses the second power transmission part 263 in the second direction X2. As a result, the second selector plate 260 moves in the second direction X2, and the lifting of the cam part 262 against the pawl part 243 is released.

[0123] The claw 243, which is radially inwardly forceped by the second helical spring 241, enters between the second teeth 203. As a result, the second claw member 240 is pressed in the first rotational direction L1, and torque is transmitted to the second outer ring 210. That is, the first outer ring 10, the second outer ring 210, and the hub 50 rotate in the first rotational direction L1, and the output shaft 303 connected to the hub 50 also rotates in the first rotational direction L1. It should be noted that when the first outer ring 10, the second outer ring 210, and the hub 50 rotate, the shift drum 80A also rotates in the first rotational direction L1.

[0124] According to Embodiment 2, the torque transmitted to the output shaft 303 can be selected as either the torque of the first input shaft 301 or the torque of the second input shaft 302. Furthermore, a shift drum 80A makes both selection plates (first selection plate 60, second selection plate 260) movable. Therefore, the number of shift drums 80A is reduced, thus minimizing the number of components.

[0125] Furthermore, when the pressure from the shift drum 80A is released, the second selector plate 260 moves in the first direction X1 by the force applied by the second coil spring 273. Additionally, when the clamping force acting on the second pawl member 240 decreases, the cam portion 262 lifts the pawl portion 243. That is, the load acting on the cam portion 62 and the pawl portion 243 is smaller. Therefore, deformation of the cam portion 262 and the second pawl member 240 is avoided.

[0126] The embodiments have been described above, but this disclosure is not limited to the examples described in the embodiments. For example, the claw members (first claw member 40, second claw member 240) are provided on the outer ring (first outer ring 10, second outer ring 210) side, and the teeth (first tooth 3, second tooth 203) are provided on the inner ring (first inner ring 1, second inner ring 201) side. However, this disclosure may also be that the claw members are provided on the inner ring side and the teeth are provided on the outer ring side.

[0127] Furthermore, in this embodiment, to prevent misassembly of the first outer ring 10 and the hub 50, the first trapezoidal portion 19 and the first valley portion 20 are provided in the fitting portion 17, and the second trapezoidal portion 55 and the second valley portion 56 are provided in the connecting wall 51. Here, if the shape of the outer diameter of the connecting wall 51 viewed from the first direction X1 is different from the shape viewed from the second direction X2, misassembly of the first outer ring 10 and the hub 50 can be prevented. Therefore, this disclosure can also prevent misassembly by using a shape other than that shown in the embodiment.

[0128] Furthermore, in Embodiment 1, the first selection plate 60 moves in the second direction X2 via the selection plate of the first connecting mechanism 70 using the first helical spring 73, but this disclosure is not limited to this. For example, the first power transmission part 63 of the first selection plate 60 may be connected to the shift drum 80, and the first selection plate 60 and the shift drum 80 may move together in the second direction X2. That is to say, the first connecting mechanism 70 is not a necessary component in this disclosure.

[0129] Furthermore, in Embodiment 2, the first selection plate 60 and the second selection plate 260 are restored to their initial state by the first helical spring 73 and the second helical spring 273 for the selection plate. However, as described above, this disclosure may also omit the first helical spring 73 and the second helical spring 273 for the selection plate.

[0130] Furthermore, the shift drums 80 and 80A cannot rotate relative to the first outer ring 10, but this disclosure may also allow them to rotate relative to each other.

[0131] It should be noted that this disclosure may also be a combination of the following configurations.

[0132] (1) A selective one-way clutch, comprising:

[0133] The first inner circle is formed in a ring shape;

[0134] The first outer ring is formed in a ring shape, and the first inner ring is disposed inside the first outer ring;

[0135] The shift drum is formed in a ring shape, with the first inner ring and the first outer ring disposed on the inner side of the shift drum; and

[0136] The first selection plate separates the first inner ring from the first outer ring.

[0137] The direction parallel to the rotation axis of the first inner ring is taken as the axial direction.

[0138] One of the axial directions is taken as the first direction.

[0139] The other side of the axis is taken as the second direction.

[0140] Multiple first teeth are formed on one of the outer peripheral surface of the first inner ring and the inner peripheral surface of the first outer ring.

[0141] A first claw member capable of tilting and a first force-applying member that applies force towards the first tooth are provided on the other side of the outer peripheral surface of the first inner ring and the inner peripheral surface of the first outer ring.

[0142] The first selection panel has:

[0143] A ring-shaped plate body is disposed in the first direction relative to the first outer ring; and

[0144] The first cam portion extends from the radially inner end of the plate body in the second direction, and lifts the first claw member against the applied force of the first force-applying member.

[0145] The radially outer end of the plate body is a first power transmission part that protrudes radially outward more than the outer circumferential surface of the first outer ring.

[0146] A connecting portion for connection with the direct-drive mechanism is formed on the outer peripheral surface of the shift drum.

[0147] The side of the shift drum facing the first direction is a first pressing surface that is opposite to the first power transmission part in the axial direction.

[0148] When the shift drum moves in the first direction, the first power transmission part is pressed in the first direction, and the lifting of the first cam part on the first claw member is released.

[0149] (2) According to (1), the selective one-way clutch, wherein,

[0150] A groove is formed on the inner circumferential surface of the shift drum, which is recessed radially outward and extends axially.

[0151] A protrusion is formed on the outer peripheral surface of the first outer ring, protruding radially outward and extending in the axial direction.

[0152] The protrusion is disposed in the groove, and the shift drum is movable in the axial direction relative to the first outer ring but cannot rotate relative to it.

[0153] (3) The selective one-way clutch according to (1) or (2), wherein,

[0154] The selective one-way clutch has a first connecting mechanism that connects the first outer ring to the first selection plate.

[0155] The first connecting mechanism has:

[0156] The shaft portion extends through the first outer ring and the first selection plate in the axial direction;

[0157] A first anti-detachment part is provided at the end of the shaft in the first direction;

[0158] A second anti-detachment part is provided at the end of the shaft in the second direction; and

[0159] The selection plate uses a first force-applying component, positioned between the first outer ring and the second anti-detachment part, to consistently apply force to the second anti-detachment part in the second direction.

[0160] When the pressure from the shift drum is released, the first selector plate is pressed in the second direction by the first anti-disengagement part.

[0161] (4) The selective one-way clutch according to any one of (1) to (3) has the following characteristics:

[0162] A ring-shaped hub, which is positioned inside the first inner ring.

[0163] An annular connecting wall extending radially outward is formed on the outer peripheral surface of the hub.

[0164] The connecting wall is disposed in the second direction relative to the first inner ring and the first outer ring.

[0165] The first outer ring and the connecting wall are connected to each other in a manner that prevents them from rotating relative to each other.

[0166] (5) The selective one-way clutch according to (4), wherein,

[0167] An annular fitting wall is formed on the side of the first outer ring facing the second direction, protruding in the second direction and surrounding the outer periphery of the connecting wall.

[0168] The connecting wall is fitted into the inner circumferential side of the fitting wall.

[0169] The outer diameter of the connecting wall has a shape that is different when viewed from the first direction and a shape that is different when viewed from the second direction.

[0170] (6) The selective one-way clutch according to (4) or (5) has the following features:

[0171] A second inner ring, in an annular shape, is disposed in the second direction of the first inner ring, separated by the connecting wall;

[0172] A second annular outer ring is disposed in the second direction of the first outer ring, separated from the connecting wall; and

[0173] The second selection plate, positioned in the second direction relative to the second outer ring, separates the second inner ring from the second outer ring.

[0174] The imaginary plane that overlaps with the connecting wall is taken as the imaginary plane.

[0175] The first inner ring and the second inner ring are formed symmetrically with respect to the imaginary plane.

[0176] The first outer ring and the second outer ring are formed in a plane-symmetrical manner with the imaginary plane as a reference.

[0177] The first selection plate and the second selection plate are symmetrically arranged with respect to the imaginary plane.

[0178] The first outer ring, the connecting wall, and the second outer ring are interconnected.

[0179] The second selection plate has a second power transmission portion that protrudes radially outward from the outer peripheral surface of the second outer ring.

[0180] The side of the shift drum facing the second direction is a second pressing surface that is opposite the second power transmission part in the axial direction.

[0181] When the shift drum moves in the second direction, the second power transmission part is pressed in the second direction, and the second selector plate releases the lifting of the second claw member disposed on the inner circumferential side of the second outer ring.

Claims

1. A selective one-way clutch, comprising: The first inner circle is formed in a ring shape; The first outer ring is formed in a ring shape, and the first inner ring is disposed inside the first outer ring; The shift drum is formed in a ring shape, with the first inner ring and the first outer ring disposed on the inner side of the shift drum; and The first selection plate separates the first inner ring from the first outer ring. The direction parallel to the rotation axis of the first inner ring is taken as the axial direction. One of the axial directions is taken as the first direction. The other side of the axis is taken as the second direction. Multiple first teeth are formed on one of the outer peripheral surface of the first inner ring and the inner peripheral surface of the first outer ring. A first claw member capable of tilting and a first force-applying member that applies force towards the first tooth are provided on the other side of the outer peripheral surface of the first inner ring and the inner peripheral surface of the first outer ring. The first selection panel has: A ring-shaped plate body is disposed in the first direction relative to the first outer ring; and The first cam portion extends from the radially inner end of the plate body in the second direction, and lifts the first claw member against the applied force of the first force-applying member. The radially outer end of the plate body is a first power transmission part that protrudes radially outward more than the outer circumferential surface of the first outer ring. A connecting portion for connection with the direct-drive mechanism is formed on the outer peripheral surface of the shift drum. The side of the shift drum facing the first direction is a first pressing surface that is opposite to the first power transmission part in the axial direction. When the shift drum moves in the first direction, the first power transmission part is pressed in the first direction, and the lifting of the first cam part on the first claw member is released.

2. The selective one-way clutch according to claim 1, wherein, A groove is formed on the inner circumferential surface of the shift drum, which is recessed radially outward and extends axially. A protrusion is formed on the outer peripheral surface of the first outer ring, protruding radially outward and extending in the axial direction. The protrusion is disposed in the groove, and the shift drum is movable in the axial direction relative to the first outer ring but cannot rotate relative to it.

3. The selective one-way clutch according to claim 1, wherein, The selective one-way clutch has a first connecting mechanism that connects the first outer ring to the first selection plate. The first connecting mechanism has: The shaft portion extends through the first outer ring and the first selection plate in the axial direction; A first anti-detachment part is provided at the end of the shaft in the first direction; A second anti-detachment part is provided at the end of the shaft in the second direction; and The selection plate uses a first force-applying component, positioned between the first outer ring and the second anti-detachment part, to consistently apply force to the second anti-detachment part in the second direction. When the pressure from the shift drum is released, the first selector plate is pressed in the second direction by the first anti-disengagement part.

4. The selective one-way clutch according to claim 1, comprising: A ring-shaped hub, which is positioned inside the first inner ring. An annular connecting wall extending radially outward is formed on the outer peripheral surface of the hub. The connecting wall is disposed in the second direction relative to the first inner ring and the first outer ring. The first outer ring and the connecting wall are connected to each other in a manner that prevents them from rotating relative to each other.

5. The selective one-way clutch according to claim 4, wherein, An annular fitting wall is formed on the side of the first outer ring facing the second direction, protruding in the second direction and surrounding the outer periphery of the connecting wall. The connecting wall is fitted into the inner circumferential side of the fitting wall. The outer diameter of the connecting wall has a shape that is different when viewed from the first direction and a shape that is different when viewed from the second direction.

6. The selective one-way clutch according to claim 4 or 5, comprising: A second inner ring, in an annular shape, is disposed in the second direction of the first inner ring, separated by the connecting wall; A second annular outer ring is disposed in the second direction of the first outer ring, separated from the connecting wall; and The second selection plate, positioned in the second direction relative to the second outer ring, separates the second inner ring from the second outer ring. The imaginary plane that overlaps with the connecting wall is taken as the imaginary plane. The first inner ring and the second inner ring are formed symmetrically with respect to the imaginary plane. The first outer ring and the second outer ring are formed in a plane-symmetrical manner with the imaginary plane as a reference. The first selection plate and the second selection plate are symmetrically arranged with respect to the imaginary plane. The first outer ring, the connecting wall, and the second outer ring are interconnected. The second selection plate has a second power transmission portion that protrudes radially outward from the outer peripheral surface of the second outer ring. The side of the shift drum facing the second direction is a second pressing surface that is opposite the second power transmission part in the axial direction. When the shift drum moves in the second direction, the second power transmission part is pressed in the second direction, and the second selector plate releases the lifting of the second claw member disposed on the inner circumferential side of the second outer ring.

Images