JP2017114360A - Power transmission device for saddle-ride type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power transmission device for a saddle ride type vehicle comprising: a belt type continuously variable transmission installed between a power source and a transmission shaft; and a mechanical transmission including a planetary gear mechanism and a speed change clutch, and installed between the transmission shaft and a vehicle shaft of a rear wheel, capable of suppressing projection from the rear wheel toward outside of vehicle width direction, as well as capable of down-sizing in the vehicle width direction.SOLUTION: A power transmission device for a saddle ride type vehicle comprising: a connection part 27 in a rear wheel WR, in one side of vehicle width direction of which a housing recessed part 109 for housing a part of a mechanical transmission 18 is formed, and a rear wheel brake 110 arranged in other side of vehicle width direction of the connection part 27, in the rear wheel WR. A first power transmission gear 74 fixed to a transmission shaft 19, and a planetary gear mechanism 22 disposed on an interim shaft 20 having a parallel axis line with the transmission shaft 19 are arranged in the housing recessed part 109 as viewed as overlapped with a part of a wheel rim 26 when viewed from a direction orthogonal to the axis lines of the transmission shaft 19 and the interim shaft 20.SELECTED DRAWING: Figure 3

Description

  The present invention provides a belt-type continuously variable transmission provided between the power source and the transmission shaft, and a rear wheel provided with a rear wheel brake, capable of continuously changing the rotational speed of the power from the power source. And a planetary gear mechanism and a mechanical transmission including a transmission clutch for switching a gear position of the planetary gear mechanism. The transmission clutch includes the transmission clutch and the transmission clutch. A second power transmission gear that rotates together with the clutch outer is coaxially disposed, and the first power transmission gear is fixed, and the planetary gear mechanism is disposed on an intermediate shaft having an axis parallel to the transmission shaft. A third power transmission gear that meshes with the first power transmission gear so as to rotate with the ring gear of the planetary gear mechanism, and a second motion that rotates with the sun gear of the planetary gear mechanism. A fourth power transmission gear that meshes with the transmission gear is coaxially disposed, and an output gear that transmits power to the axle is fixed, and the rear wheel is supported by the wheel hub and a tire. A wheel rim that surrounds the wheel hub so as to be attached, and a connecting portion that connects the wheel hub and the wheel rim, and the belt-type continuously variable transmission is connected in the vehicle width direction. The present invention relates to a power transmission device for a saddle-ride type vehicle that is disposed so as to sandwich the mechanical transmission therebetween.

  Such a power transmission device is already known from Patent Document 1, for example.

JP 2014-208524 A

  By the way, in a saddle-ride type vehicle equipped with such a power transmission device, a rear wheel brake for braking the rear wheel is generally provided on the hub of the rear wheel. However, when a power transmission device having a belt-type continuously variable transmission and a mechanical transmission is arranged around the rear wheel, the number of parts is increased, and the rear of the power transmission device is compared with a normal power transmission device having no mechanical transmission. The amount of protrusion from the wheel outward in the vehicle width direction tends to increase, and in addition to this, the rear wheel brake is provided on the rear wheel, so that the amount of protrusion from the rear wheel outward in the vehicle width direction is likely to increase. In the saddle riding type vehicle, there is a problem that it is difficult to secure the bank angle of the vehicle.

  The present invention has been made in view of such circumstances, and provides a power transmission device for a saddle-ride type vehicle that suppresses the outward protrusion from the rear wheel in the vehicle width direction and enables downsizing in the vehicle width direction. The purpose is to do.

  In order to achieve the above object, the present invention provides a belt-type continuously variable transmission provided between the power source and the transmission shaft, which allows the power from the power source to be continuously variable in speed. A mechanical transmission including a planetary gear mechanism and a transmission clutch for switching a shift stage of the planetary gear mechanism, and being interposed between a rear wheel axle provided with a wheel brake and the transmission shaft; The transmission clutch and a second power transmission gear that rotates together with the clutch outer of the transmission clutch are arranged coaxially, and the first power transmission gear is fixedly mounted on an intermediate shaft having an axis parallel to the transmission shaft. The planetary gear mechanism, a third power transmission gear that meshes with the first power transmission gear so as to rotate with the ring gear of the planetary gear mechanism, and the sun gear of the planetary gear mechanism. A fourth power transmission gear that rotates and meshes with the second power transmission gear is coaxially disposed, and an output gear that transmits power to the axle is fixed, and the rear wheel is supported by the axle. A belt-type continuously variable transmission comprising: a wheel hub, a wheel rim that surrounds the wheel hub so that a tire is attached; and a connecting portion that connects the wheel hub and the wheel rim. In a power transmission device for a saddle-ride type vehicle in which a machine is disposed so as to sandwich the mechanical transmission between the connecting portion and the connecting portion in the vehicle width direction, the rear wheel is disposed on one side of the connecting portion in the vehicle width direction. An accommodation recess for accommodating a part of the mechanical transmission is formed, and a rear wheel brake disposed on the other side in the vehicle width direction of the connecting portion is provided, and the first power transmission gear and the planetary gear mechanism include The first being disposed on said transmission shaft and said intermediate shaft the accommodating recess so as to overlap a portion of the wheel rim when viewed from the direction perpendicular to the axis of the.

  According to the present invention, in addition to the configuration of the first feature, the wheel hub is formed so as to overlap the wheel rim when viewed from a direction orthogonal to the axis of the axle, and the disc brake as the rear wheel brake is provided. A second feature is that the brake disc is attached to the wheel hub so as to be disposed on the other side in the vehicle width direction of the connecting portion.

  In addition to the configuration of the first feature, the present invention includes a transmission case that accommodates the belt-type continuously variable transmission and the mechanical transmission, and the transmission case is arranged on one side of the rear wheel on the front and rear sides of the vehicle. A case main body extending in a direction and a belt type continuously variable transmission chamber accommodating the belt type continuously variable transmission are formed between the case main body and fastened to the case main body from the side opposite to the rear wheel. The case main body is fastened to the case main body so as to cover a part of the case main body from the rear wheel side while forming a cover member and a mechanical transmission chamber for accommodating the mechanical transmission between the case main body and the case main body. An end of the transmission shaft on the side of the gear cover is rotatably supported by the gear cover via a first bearing, and an end of the intermediate shaft on the side of the gear cover via a second bearing. Support the gear cover A third bearing is interposed between the axle and the gear cover, which rotatably penetrates the gear cover, and an end of the rear wheel side of the second bearing is located at the rear of the first and third bearings. A third feature is that the rear wheel is disposed on the rear wheel side with respect to the end opposite to the wheel.

  In addition to the configuration of the first feature, the present invention includes a transmission case that accommodates the belt-type continuously variable transmission and the mechanical transmission, and the transmission case is arranged on one side of the rear wheel on the front and rear sides of the vehicle. A case main body extending in a direction and a belt type continuously variable transmission chamber accommodating the belt type continuously variable transmission are formed between the case main body and fastened to the case main body from the side opposite to the rear wheel. The case main body is fastened to the case main body so as to cover a part of the case main body from the rear wheel side while forming a cover member and a mechanical transmission chamber for accommodating the mechanical transmission between the case main body and the case main body. And the shift clutch, the second power transmission gear, and the first power transmission gear are arranged in this order from the belt type continuously variable transmission side in a direction along the axis of the transmission shaft, Outside the first and second power transmission gears Is set smaller than the outer diameter of the transmission clutch, and a relief recess is formed on the outer surface of the gear cover on the outer side in the radial direction of the first and second power transmission gears so that a part of the wheel rim is disposed. This is the fourth feature.

  In the present invention, in addition to the configuration of the first feature, the shift clutch, the second power transmission gear, and the first power transmission gear are arranged in this order in the direction along the axis of the transmission shaft. Arranged so that the output gear, the fourth power transmission gear and the planetary gear mechanism are arranged in this order from the belt type continuously variable transmission side in the direction along the axis of the intermediate shaft. The second power transmission gear, the first power transmission gear, the fourth power transmission gear, and the planetary gear mechanism are arranged on the rear wheel side from the end of the output gear on the belt-type continuously variable transmission side. 5 features.

  According to the present invention, in addition to the configuration of the fifth feature, a part of the planetary gear mechanism and the fourth power transmission gear overlap the clutch outer as viewed from the direction along the axis of the transmission shaft and the intermediate shaft. Further, relative positions of the planetary gear mechanism and the fourth power transmission gear with respect to the clutch outer are set, and at least a part of the output gear is viewed from a direction orthogonal to the axes of the intermediate shaft and the transmission shaft. A sixth feature is that a relative position of the output gear with respect to the clutch outer is set so as to overlap the clutch outer.

  According to the present invention, in addition to the configuration of the sixth feature, a regulating member configured to cooperate with a rotation preventing member supported by the clutch outer is a one-way clutch that regulates the rotation direction of the clutch outer. A seventh feature is that it is disposed between the clutch outer and the second power transmission gear in the axial direction of the transmission shaft while overlapping with the output gear when viewed from a direction perpendicular to the axis of the shaft and the transmission shaft. And

  In addition to the configuration of the seventh feature, the present invention includes a transmission case that houses the belt-type continuously variable transmission and the mechanical transmission, and the transmission case is arranged on one side of the rear wheel in the front and rear of the vehicle. A case main body extending in a direction and a belt type continuously variable transmission chamber accommodating the belt type continuously variable transmission are formed between the case main body and fastened to the case main body from the side opposite to the rear wheel. The restriction including a cover member and a gear cover that forms a mechanical transmission chamber that houses the mechanical transmission between the case main body and the gear cover interposing a collar between the case main body and the gear main body. The member is fastened to the case main body so as to cover a part of the case main body from the rear wheel side while supporting the member in cooperation with the case main body, and the mating surface of the gear cover and the case main body is Color That against the abutment surface of the pre-said regulating member is disposed on the opposite side of the rear wheel, wherein the eighth.

  According to the present invention, in addition to the configuration of the fifth feature, a clutch inner of the transmission clutch is coupled to the transmission shaft so as not to be relatively rotatable, and the clutch outer is supported to be relatively rotatable on the transmission shaft, A mechanism comprising: the ring gear and the sun gear; a plurality of planetary gears meshed with the ring gear and the sun gear; and a planet carrier that rotatably supports the planet gears and synchronously interlocks the output gear. A ninth feature is that a part of the fourth power transmission gear is disposed so as to overlap at least a part of the sun gear when viewed from a direction orthogonal to the axis of the shaft.

  According to the present invention, in addition to the configuration of the fifth feature, a clutch inner of the transmission clutch is coupled to the transmission shaft so as not to be relatively rotatable, and the clutch outer is supported to be relatively rotatable on the transmission shaft, A mechanism comprising: the ring gear and the sun gear; a plurality of planetary gears meshed with the ring gear and the sun gear; and a planet carrier that rotatably supports the planet gears and synchronously interlocks the output gear. A cylindrical boss portion that is coupled to the shaft so as not to rotate relative to the shaft is provided integrally with the planet carrier, and at least a part of the boss portion as viewed from a direction perpendicular to the axis of the intermediate shaft is provided on the outer periphery of the boss portion. The fourth feature is that the fourth power transmission gear that overlaps is supported so as to be relatively rotatable.

  According to the present invention, in addition to the configuration of the fifth feature, a part of the transmission case housing the belt-type continuously variable transmission and the mechanical transmission extends in the vehicle front-rear direction on one side of the rear wheel. The intermediate body having a case main body and a gear cover that forms a mechanical transmission that houses the mechanical transmission between the case main body and both ends of the case main body and the gear cover are rotatably supported. The output gear is integrally formed near the case main body of the shaft, and the fourth power transmission gear, the planetary gear mechanism, and the third power transmission gear are assembled to the intermediate shaft from the end of the intermediate shaft on the gear cover side. The eleventh feature is that it can be configured.

  Furthermore, the present invention further includes a transmission case that houses the belt-type continuously variable transmission and the mechanical transmission in addition to the configuration of the fifth feature. A case main body extending in the front-rear direction and a belt type continuously variable transmission chamber for housing the belt type continuously variable transmission are formed between the case main body and fastened to the case main body from the side opposite to the rear wheel. A cover member and a mechanical transmission chamber for housing the mechanical transmission are formed between the case main body and the cover main body so as to cover a part of the case main body from the rear wheel side and fasten to the case main body. A gear cover, and a bulge portion formed in the case main body so as to bulge toward the belt type continuously variable transmission chamber side, and a transmission shaft passing through the bulge portion. One of the belt type continuously variable transmissions is provided with a bearing. So that at least a part of the fourth bearing overlaps with a part of the driven pulley constituting the transmission shaft as viewed from a direction perpendicular to the axis of the transmission shaft, the driven pulley is moved in the belt type continuously variable transmission chamber. A twelfth feature is that the shaft is supported.

  According to the first feature of the present invention, the rear wheel is formed with a housing recess for housing a part of the mechanical transmission on one side in the vehicle width direction of the connecting portion that connects the wheel hub and the wheel rim in the rear wheel. Since the rear wheel brake is disposed on the other side of the connecting portion in the vehicle width direction, the housing recess can be formed large, and a part of the wheel rim as viewed from the direction perpendicular to the axis of the transmission shaft and the intermediate shaft The first power transmission gear and the planetary gear mechanism that overlap with each other are arranged in the housing recess to prevent the power transmission device from protruding outward from the rear wheel in the vehicle width direction, and can be reduced in the vehicle width direction. It becomes.

  According to the second feature of the present invention, since the wheel hub overlaps the wheel rim when viewed from the direction orthogonal to the axis of the axle, the wheel rim and the wheel hub are brought close to each other in the direction along the axis of the axle to increase the wheel rigidity. The wheel hub can be sufficiently secured, and the protrusion of the wheel hub to the other side in the vehicle width direction can be suppressed, and the appearance of the wheel can be improved. Further, since the brake disc of the disc brake is disposed on the other side in the vehicle width direction of the connecting portion, interference of the disc brake with the power transmitting device disposed on the one side in the vehicle width direction of the connecting portion is prevented, and the power transmitting device Can be efficiently brought close to the rear wheel side, and the disc brake can be easily attached.

  According to the third aspect of the present invention, a part of the transmission case that houses the belt-type continuously variable transmission and the mechanical transmission includes a case main body that extends in the vehicle front-rear direction, and a mechanical type that houses the mechanical transmission. A gear cover is formed between the intermediate shaft and the gear cover so that a transmission chamber is formed between the case main body and a part of the case main body is covered with the case main body so as to cover a part of the case main body from the rear wheel side. The rear wheel side end of the second bearing is opposite to the first bearing interposed between the transmission shaft and the gear cover and the rear wheel of the third bearing interposed between the rear wheel axle and the gear cover. Since the planetary gear mechanism and the fourth power transmission gear arranged coaxially with the intermediate shaft can be arranged closer to the rear wheel side than the end of the rear wheel, the vehicle from the rear wheel can be arranged. It is possible to reduce the amount of projection of the power transmission device to the outside in the width direction. That.

  According to the fourth aspect of the present invention, a part of the transmission case that houses the belt-type continuously variable transmission and the mechanical transmission includes a case main body that extends in the longitudinal direction of the vehicle, and a mechanical type that houses the mechanical transmission. A transmission clutch is formed in a direction along the axis of the transmission shaft, and is configured with a gear cover that is fastened to the case main body so as to cover a part of the case main body from the rear wheel side while forming a transmission chamber between the case main body and The second power transmission gear and the first power transmission gear are arranged in this order from the belt-type continuously variable transmission, and the first and second power transmission gears having an outer diameter smaller than the outer diameter of the transmission clutch. A large relief recess can be formed on the outer surface of the gear cover on the radially outer side, and a part of the wheel rim is arranged in the relief recess, so that the power transmission device can be arranged closer to the rear wheel side, Car width from rear wheel It is possible to further reduce the amount of protrusion of the power transmission device to the outside.

  According to the fifth aspect of the present invention, the speed change clutch, the first power transmission gear, and the second power transmission gear disposed on the transmission shaft are disposed at a position closest to the belt-type continuously variable transmission. Of the output gear, the fourth power transmission gear and the planetary gear mechanism disposed on the intermediate shaft, the output gear is disposed at a position closest to the belt-type continuously variable transmission, and the output gear on the belt-type continuously variable transmission side Since the second power transmission gear, the first power transmission gear, the fourth power transmission gear, and the planetary gear mechanism are arranged on the rear wheel side from the end portion, even if the width along the axial direction of the intermediate gear is increased, The positions of the first power transmission gear, the second power transmission gear, the fourth power transmission gear, and the planetary gear mechanism in the direction along the axis can be prevented from being affected. Therefore, it is possible to reduce the size of the power transmission device along the vehicle width direction while ensuring the degree of freedom of setting the width along the axial direction of the output gear.

  According to the sixth aspect of the present invention, a part of the planetary gear mechanism and the fourth power transmission gear overlap the clutch outer when viewed from the direction along the axes of the transmission shaft and the intermediate shaft, and at least a part of the output gear is In addition, since it overlaps the clutch outer as viewed from the direction orthogonal to the axis of the intermediate shaft and the transmission shaft, it is possible to reduce the size of the power transmission device in the vehicle width direction and transmit power in the direction orthogonal to the vehicle width direction. The device can be downsized, and the power transmission device can be further downsized.

  According to the seventh aspect of the present invention, the restriction member of the one-way clutch is disposed in a region surrounded by the clutch outer, the second power transmission gear, and the output gear, so that the restriction member is efficiently disposed in the region. Therefore, it is possible to further reduce the size of the power transmission device in the vehicle width direction.

  According to the eighth feature of the present invention, the regulating member having a collar interposed between the case main body and the case main body is fastened to the case main body so as to cover a part of the case main body from the rear wheel side. A joint boss for fastening the gear cover to the case main body is supported in cooperation with the gear cover, and the mating surface of the gear cover and the case main body is arranged on the opposite side of the collar and the contact surface of the regulating member from the rear wheel. The amount of protrusion that protrudes from the transmission case to the rear wheel side is suppressed, and the mechanical transmission can be arranged closer to the rear wheel side, so that the power transmission device and the rear wheel can be arranged more in the vehicle width direction. It can be arranged compactly. In addition, since the collar is interposed between the regulating member and the case main body, the regulating member is supported at a position separated in the vehicle width direction from the mating surface of the gear cover and the case main body. Can also be secured.

  According to the ninth aspect of the present invention, the clutch inner of the speed change clutch is coupled to the transmission shaft so as not to be relatively rotatable, the clutch outer is supported by the transmission shaft so as to be relatively rotatable, and is rotated together with the sun gear of the planetary gear mechanism. A part of the power transmission gear overlaps at least a part of the sun gear as viewed from the direction orthogonal to the axis of the intermediate shaft, so that the sun gear and the fourth power transmission gear are arranged in a compact manner in the direction along the axis of the intermediate shaft. Can do.

  According to the tenth feature of the present invention, the clutch inner of the speed change clutch is coupled to the transmission shaft so as not to rotate relative to the transmission shaft, and the clutch outer is supported to be rotatable relative to the transmission shaft. A cylindrical boss portion that is coupled so as not to be relatively rotatable is integrally provided, and a fourth power transmission gear that overlaps at least a part of the boss portion as viewed from a direction orthogonal to the axis of the intermediate shaft is provided on an outer periphery of the boss portion. Since it is supported so as to be relatively rotatable, the planetary carrier and the fourth power transmission gear can be compactly arranged in a direction along the axis of the intermediate shaft.

  According to the eleventh feature of the present invention, both ends of the intermediate shaft are rotatably supported by the case main body and the gear cover that constitute a part of the transmission case, and the output gear is provided at one end of the intermediate shaft near the case main body. Since the fourth power transmission gear, the planetary gear mechanism, and the third power transmission gear can be assembled to the intermediate shaft from the end of the intermediate shaft on the gear cover side, the second power transmission gear, the planetary gear mechanism, and the third power transmission gear are integrally formed. The assembly of the four power transmission gears, the planetary gear mechanism, and the third power transmission gear is facilitated.

  According to a twelfth feature of the present invention, the transmission case includes a case main body, a cover member that forms a belt type continuously variable transmission chamber between the case main body, and a mechanical transmission chamber as the case main body. A fourth bearing is interposed between a bulging portion formed in the case main body and the transmission shaft, and a gear cover formed between the belt-type continuously variable transmission and the transmission shaft. Since at least a part of the fourth bearing overlaps a part of the driven pulley constituting a part when viewed from the direction perpendicular to the axis of the transmission shaft, a part of the mechanical transmission chamber is partly a belt type continuously variable transmission chamber. The belt-type continuously variable transmission chamber and the mechanical transmission chamber are formed in a compact manner in the axial direction of the transmission shaft so that the power transmission device is further downsized in the vehicle width direction. be able to.

Fig. 2 is a left side view of a main part of the motorcycle. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. FIG. 2 is an enlarged view of a main part of FIG. It is the figure which looked at the rear part of the transmission case from the rear-wheel side. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 3 in a state where the gear cover is omitted. FIG. 7 is an enlarged view of a portion indicated by an arrow 7 in FIG. 3. It is sectional drawing which follows the 8-8 line | wire of FIG. 3 for showing the attachment state of a control member. FIG. 9 is a sectional view taken along line 9-9 in FIG. 5.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 9. First, in FIG. 1, a riding seat 11 is provided at a rear portion of a vehicle body frame F included in a motorcycle which is a saddle-ride type vehicle. A power unit P that is supported and exhibits power for driving the rear wheels WR is disposed below the passenger seat 11. The power unit P includes a water-cooled engine E that is a power source, and a power transmission device T that transmits power from the engine E to the rear wheels WR.

  Referring to FIGS. 2 and 3 together, the engine body 12 of the engine E is supported at the lower part of the vehicle frame front-rear intermediate portion of the body frame F so as to be swingable in the vertical direction. A crankshaft 15 having an axis along the vehicle width direction is rotatably supported by the crankcase 13.

  The power transmission device T includes a belt-type continuously variable transmission 16 that transmits the rotational power of the crankshaft 15 so as to continuously change the rotational speed thereof, a transmission shaft 19, and the belt-type continuously variable transmission 16. It is provided between the transmission shaft 19 and the axle 21 of the rear wheel WR, including a centrifugal start clutch 17 interposed therebetween, a planetary gear mechanism 22 and a transmission clutch 23 for switching the speed of the planetary gear mechanism 22. The mechanical transmission 18 is provided.

  The rear wheel WR connects the wheel hub 25 supported by the axle 21, the wheel rim 26 that surrounds the wheel hub 25 so that a tire 28 is attached, and the wheel hub 25 and the wheel rim 26. The belt-type continuously variable transmission 16 is arranged so as to sandwich the mechanical transmission 18 between the connection portion 27 in the vehicle width direction.

  The power transmission device T is accommodated in a transmission case 29 extending in the vehicle front-rear direction on one side of the rear wheel WR (in this embodiment, on the left side). 13 is formed between the case main body 30 and the case main body 30 extending rearward and a belt type continuously variable transmission chamber 33 for housing the belt type continuously variable transmission 16. The case main body 30 is formed while forming a cover member 31 fastened to the case main body 30 from the opposite side of the WR and a mechanical transmission chamber 34 for housing the mechanical transmission 18 between the case main body 30 and the case main body 30. And a gear cover 32 fastened to the case main body 30 so as to cover a part of the rear wheel WR from the rear wheel WR side.

  An air cleaner 36 constituting a part of the intake device 35 connected to the cylinder head 14 of the engine body 12 is disposed above the transmission case 29 and supported by the transmission case 29. A rear cushion unit 37 is provided between the rear part of the case main body 30 and the rear part of the vehicle body frame F in the transmission case 29.

  The belt-type continuously variable transmission 16 includes a drive pulley 38 provided at one end of the crankshaft 15 that enters the belt-type continuously variable transmission chamber 33 of the transmission case 29, and is parallel to the crankshaft 15. An endless V-belt 40 is wound around a driven pulley 39 that is rotatably supported by the transmission shaft 19 having an axis.

  The drive pulley 38 includes a fixed pulley half 41 fixed to the crankshaft 15, and a movable pulley half 42 that can be moved toward and away from the fixed pulley half 41. Is driven in the axial direction by centrifugal force acting on the weight roller 44 disposed between the ramp plate 43 fixed to the crankshaft 15 and the movable pulley half 42.

  The driven pulley 39 surrounds the transmission shaft 19 coaxially and is fixed to a cylindrical inner cylinder 45 that is rotatably supported by the transmission shaft 19. A movable pulley half 48 that is capable of relative movement and rotation in the axial direction and is fixed to an outer cylinder 47 that coaxially surrounds the inner cylinder 45 so that it can be moved toward and away from the fixed pulley half 46. The V belt 40 is wound between the fixed pulley half 46 and the movable pulley half 48. A torque cam mechanism 49 that applies an axial component force between the pulley halves 46 and 48 in accordance with the relative rotational phase difference between the movable pulley half 48 and the fixed pulley half 46 includes the inner cylinder 45 and the outer cylinder 45. The movable pulley half 48 provided between the cylinders 47 is elastically biased toward the fixed pulley half 46 by the coil spring 50.

  The start clutch 17 is connected between the end of the transmission shaft 19 on the cover member 31 side and the inner cylinder 45 so that the start clutch 17 is connected in response to the engine speed exceeding a predetermined start speed. A hook-shaped clutch outer 51 fixed to the transmission shaft 19, a clutch inner 52 fixed to the inner cylinder 45, and a plurality of portions of the clutch inner 52 via shafts 53. A centrifugal weight 54 to be supported, and a clutch spring 55 provided between each centrifugal weight 54 and the clutch inner 52 are provided. In this starting clutch 17, the centrifugal force acting on each centrifugal weight 54 exceeds the spring urging force of each clutch spring 55 as the clutch inner 52 rotates with the rotational power from the belt type continuously variable transmission 16. Sometimes, the centrifugal weight 54 opens, and the tip of the centrifugal weight 54 comes into contact with the inner periphery of the clutch outer 51 and frictionally engages, so that the inner cylinder 45, that is, the fixed pulley half 46, and the clutch outer 51, that is, the transmission shaft 19 are connected. Combined and connected.

  4 to 6, the transmission case 29 includes the transmission shaft 19, an intermediate shaft 20 disposed at a distance in the vehicle front-rear direction with respect to the transmission shaft 19, and the intermediate shaft 20. The rear wheel axle 21 disposed at a distance in the longitudinal direction of the vehicle with respect to the shaft 20 is rotatably supported while having mutually parallel axes, and in this embodiment, the intermediate wheel The shaft 20 is disposed rearward and downward in the vehicle longitudinal direction with respect to the transmission shaft 19, and the axle 21 is disposed rearward and upward in the vehicle longitudinal direction of the intermediate shaft 20.

  The transmission shaft 19 in which the clutch outer 52 of the starting clutch 17 is fixed to the end portion on the cover member 31 side rotatably passes through the case main body 30, and the end of the transmission shaft 19 on the gear cover 32 side. The part is rotatably supported by a bottomed cylindrical first bearing housing 56 formed integrally with the gear cover 32 via a first bearing 57 which is a ball bearing. The end portion of the intermediate shaft 20 on the gear cover 32 side is freely rotatable via a second bearing 59 which is a ball bearing on a bottomed cylindrical second bearing housing 58 formed integrally with the gear cover 32. Supported. Between the cylindrical third bearing housing 61 formed in the gear cover 32 and the axle 21 that rotatably passes through the third bearing housing 61, a third bearing 62 that is a ball bearing, Annular first and second seal members 63 and 64 sandwiching the three bearings 62 from both sides in the axial direction are interposed.

  In addition, the end of the second bearing 59 on the rear wheel WR side is disposed closer to the rear wheel WR than the end of the first and third bearings 57 and 62 opposite to the rear wheel WR. . That is, in this embodiment, the first vertical plane PL1 passing through the end surface on the rear wheel WR side of the second bearing 59 is located on the rear wheel WR side of the first bearing 57 and passes through the third bearing 62. Thus, the relative arrangement of the first, second and third bearings 57, 59, 62 is determined.

  In the portion corresponding to the transmission shaft 19, the case main body 30 is integrally formed with a bulging portion 65 bulging toward the belt-type continuously variable transmission chamber 33, and The transmission shaft 19 rotatably passes through a cylindrical fourth bearing housing 66 formed at the end of the step transmission chamber 33 side, and the belt type is interposed between the fourth bearing housing 66 and the transmission shaft 19. An annular third seal member 68 and a fourth bearing 67, which is a ball bearing, are interposed in order from the continuously variable transmission chamber 33 side.

  In addition, at least a part of the fourth bearing 67 overlaps with a part of the driven pulley 39 constituting a part of the belt type continuously variable transmission 16 when viewed from a direction perpendicular to the axis of the transmission shaft 19. The driven pulley 39 is supported by the transmission shaft 19 in the belt type continuously variable transmission chamber 33. That is, in this embodiment, the second vertical plane PL2 passing through the end surface on the case main body 30 side of the stationary pulley half 46 constituting a part of the driven pulley 39 passes through the fourth bearing 67, and A driven pulley 39 is supported on the transmission shaft 19.

  The case main body 30 is integrally formed with a bottomed cylindrical fifth bearing housing 70 corresponding to the intermediate shaft 20 and a bottomed cylindrical sixth bearing housing 72 corresponding to the axle 21. An end of the intermediate shaft 20 on the case main body 30 side is rotatably supported by a fifth bearing housing 70 via a fifth bearing 71 which is a needle bearing, and the axle 21 has the end on the case main body 30 side. Is supported by a sixth bearing housing 72 via a sixth bearing 73 which is a ball bearing.

  Referring also to FIG. 7, in the mechanical transmission chamber 34, the transmission shaft 19 includes the transmission clutch 23 and a second power transmission gear 75 that rotates together with the clutch outer 76 of the transmission clutch 23. The first power transmission gear 74 is fixedly disposed, and the first and second power transmission gears 74 and 75 are formed to have the same diameter.

  The intermediate shaft 20 includes the planetary gear mechanism 22, a third power transmission gear 95 that meshes with the first power transmission gear 74 so as to rotate together with the ring gear 100 of the planetary gear mechanism 22, and the planetary gear mechanism. A fourth power transmission gear 96 that rotates together with the 22 sun gear 103 and meshes with the second power transmission gear 75 is coaxially disposed, and an output gear 97 that transmits power to the axle 21 is fixed. A driven gear 98 that meshes with the output gear 97 is fixed to the axle 21, and the third and fourth power transmission gears 95 and 96 are formed to have the same diameter.

  The transmission clutch 23, the first power transmission gear 74, and the second power transmission gear 75 are arranged so that the transmission clutch 23, the second power transmission gear 75, and the first power transmission gear 74 are in a direction along the axis of the transmission shaft 19. They are arranged in order from the belt type continuously variable transmission 16 side. In addition, the outer diameters DI and D2 of the first and second power transmission gears 74 and 75 are set to be smaller than the outer diameter DC of the transmission clutch 23, and the first and second power transmission gears 74 and 75 are outside the radial direction. A relief recess 82 is formed on the outer surface of the gear cover 32 so that a part of the wheel rim 26 of the rear wheel WR is disposed.

  Further, the planetary gear mechanism 22, the fourth power transmission gear 96 and the output gear 97 are arranged in the order along the axis of the intermediate shaft 20 so that the output gear 97, the fourth power transmission gear 96 and the planetary gear mechanism 22 are in this order. Are arranged side by side from the belt type continuously variable transmission 16 side, and a part of the transmission clutch 23, the second power transmission gear 75, the first power transmission gear 74, the fourth power transmission gear 96, and the planetary gear mechanism. 22 is disposed closer to the rear wheel WR than the end of the output gear 97 on the belt type continuously variable transmission 16 side. That is, a part of the transmission clutch 23, the second power transmission gear 75, and the first power are arranged on the rear wheel WR side of the third vertical plane PL3 passing through the end face of the output gear 97 on the belt type continuously variable transmission 16 side. The transmission gear 74, the fourth power transmission gear 96, and the planetary gear mechanism 22 are arranged. The entire transmission clutch 23 may be disposed on the rear wheel WR side with respect to the third vertical plane PL3.

  The transmission clutch 23 is formed in a bowl shape that is opened toward the bulging portion 65 side of the case main body 30 and is supported by the transmission shaft 19 so as to be relatively rotatable, and the clutch outer 76 The clutch inner 77 connected to the transmission shaft 19 in a relatively non-rotatable manner, the centrifugal weight 78 pivotally supported by a plurality of locations of the clutch inner 77 via the shaft 79, and between the centrifugal weight 78 and the clutch inner 77 And a clutch spring (not shown).

  The clutch outer 76 is fixed to an end portion on the clutch inner 77 side of a cylindrical cylindrical body 81 that is rotatably supported by the transmission shaft 19 via a seventh bearing 80 that is a needle bearing. A second power transmission gear 75 is integrally formed at the end of the cylinder 81 opposite to the clutch inner 77. The first power transmission gear 74 is moved axially by the cylinder 81 and the first bearing 57 so that the cylinder 81 having the second power transmission gear 75 integrally is sandwiched between the clutch inner 77 and the cylinder 81. It is splined to the transmission shaft 19 while being regulated.

  In the speed change clutch 23, when the centrifugal force acting on each centrifugal weight 78 in response to the rotation of the clutch inner 77 together with the transmission shaft 19 exceeds the spring biasing force of each clutch spring, the centrifugal weight 78 is moved to the clutch outer. By frictionally engaging the inner periphery of 76, the clutch outer 76 and the second power transmission gear 75 rotate together with the transmission shaft 19 in a connected state.

  The connection rotational speed at which the shift clutch 23 is switched from the disconnected state to the connected state is higher than the connected rotational speed at which the start clutch 17 is switched from the disconnected state to the connected state, and the start clutch 17 is switched from the connected state to the disconnected state. The rotational speed is also higher than the cutoff rotational speed at which the starting clutch 17 is switched from the connected state to the disconnected state.

  The rotation direction of the clutch outer 76 in the transmission clutch 23 is regulated by a one-way clutch 84. The one-way clutch 84 includes a plurality of anti-rotation members 85 supported by the clutch outer 76 and their rotations. And a regulating member 86 that is supported by the transmission case 29 so that the stop member 85 can be engaged.

  Referring also to FIG. 8, the regulating member 86 is formed in a ring shape having three mounting arm portions 86a extending outward as clearly shown in FIG. The control member 86, in which a cylindrical collar 87 is interposed between the mounting arm portion 86a and the case main body 30, is supported in cooperation with the case main body 30, while the case from the rear wheel WR side. Fastened to the case main body 30 so as to cover a part of the main body 30.

  The case main body 30 is integrally provided with a support protrusion 89 projecting inward so as to be flush with the mating surface 88 of the case main body 30 and the gear cover 32 at a position corresponding to the mounting arm portion 86a. A cylindrical support tube 91 having a rubber 90 baked on its outer periphery is implanted in the support protrusion 89 so as to protrude toward the gear cover 32.

  A support hole 92 having a diameter corresponding to the inner diameter of the collar 87 is provided at the tip of the mounting arm portion 86a, and the support cylinder 87 having a rubber 90 on the outer periphery is inserted through the collar 87. The collar 87 is inserted into the support hole 92 of the mounting arm portion 86 a sandwiching the collar 87 with the support protrusion 89.

  On the other hand, a portion of the inner surface of the gear cover 32 corresponding to the mounting arm portion 86a is formed so as to be able to accommodate the distal end portion of the mounting arm portion 86a and the collar 87, and the contact of the regulating member 86 The arm portion 86 a contacts the gear cover 32. A plurality of bolts 93 inserted into the case main body 30 from the side opposite to the rear wheel WR are screwed into the gear cover 32 and tightened, so that the gear cover 32 is placed between the case main body 30 and the collar 87. The regulating member 86 with the intervening therebetween is fastened to the case main body 30 in cooperation with the case main body 30, and the mating surface 88 of the gear cover 32 and the case main body 30 is The collar 87 and the contact surface 94 of the restricting member 86 are disposed on the opposite side of the rear wheel WR.

  In such a one-way clutch 84, when the rotational force acting in the direction opposite to the direction in which the transmission shaft 19 rotates is applied to the clutch outer 76 by the rotational power acting from the engine E side, Engage with the restricting member 86 to restrict the rotation of the clutch outer 76. Further, when the rotational force acting in the same direction as the transmission shaft 19 rotates by the rotational power acting on the clutch outer 76 from the engine E side, the rotation preventing member 85 and the restricting member 86 are engaged. The engagement is released and the rotation of the clutch outer 76 is allowed.

  The regulating member 86 is disposed between the clutch outer 76 and the second power transmission gear 75 in the axial direction of the transmission shaft 19 and viewed from the direction orthogonal to the axis of the intermediate shaft 20 and the transmission shaft 19. It is arranged so as to overlap. That is, the restricting member 86 is in a position corresponding to the output gear 97 in the axial direction of the transmission shaft 19 and the intermediate shaft 20, and as shown in FIGS. Between the third vertical plane PL3 passing through the end face on the side of the step transmission 16 and the fourth vertical plane PL4 passing through the end face of the output gear 97 on the side opposite to the belt type continuously variable transmission 16, the restriction member 86. Is placed.

  Referring also to FIG. 9, the planetary gear mechanism 22 includes a ring gear 100, a plurality of planetary gears 101 meshing with the ring gear 100, the planetary gears 101 rotatably supported, and the output gear 97. A planet carrier 102 that is synchronously interlocked, and a sun gear 103 that is rotatably supported by the intermediate shaft 20 and meshes with the plurality of planet gears 101 are provided.

  A third power transmission gear 95 that meshes with the first power transmission gear 74 fixed by spline coupling is integrally formed on the outer periphery of the ring gear 100. The planetary carrier 102 is disposed between the ring gear 100 and the output gear 97 in a direction along the axis of the intermediate shaft 20 and is connected to the intermediate shaft 20 in a non-rotatable manner by spline coupling. The fourth power transmission gear 96 is supported on the outer periphery of the boss 104 so as to be relatively rotatable.

  The fourth power transmission gear 96 integrally includes a cylindrical supported cylindrical portion 96a that coaxially surrounds the boss portion 104 and extends to the opposite side of the output gear 97, as shown in FIGS. As will be clearly shown, the axial length of the supported cylindrical portion 96 a is rotatably supported by the boss portion 104. Therefore, when viewed from the direction orthogonal to the axis of the intermediate shaft 20, the supported cylinder portion in which at least a part (a part in this embodiment) of the boss part 104 is a part of the fourth power transmission gear 96. A part of the boss part 104 is arranged at a position corresponding to the supported cylinder part 96 a in the axial direction of the intermediate shaft 30.

  The sun gear 103 is fixed to the outer periphery of the end of the supported portion 96a opposite to the output gear 97 by spline coupling. When viewed from a direction orthogonal to the axis of the intermediate shaft 20, the sun gear 103 is 4 A part of the power transmission gear 96 (in this embodiment, an end portion of the supported cylindrical portion 96a opposite to the output gear 97) is disposed so as to overlap the sun gear 103, and in the axial direction of the intermediate shaft 30 A part of the supported cylindrical portion 96 a is disposed at a position corresponding to the sun gear 103.

  In such a planetary gear mechanism 22, the ring gear 100 is driven by the power transmitted from the first power transmission gear 74 that rotates with the transmission shaft 19 via the third power transmission gear 95 when the speed change clutch 23 is in the disconnected state. The sun gear 103 is acted on the sun gear 103 through the planetary gear 101 and rotates on the side opposite to the ring gear 65. The sun gear 103 is connected to the clutch outer 76 of the transmission clutch 23 via the fourth power transmission gear 96 and the second power transmission gear 75, and the clutch outer 76 has a force to rotate in the direction opposite to the transmission shaft 19. Since the rotation of the clutch outer 76 is restricted by the one-way clutch 84, the sun gear 103 is also stationary. Therefore, each planetary gear 101 rotates around the stationary sun gear 103 together with the planetary carrier 102, and the output gear 97 and the driven gear 98 are output from the planetary carrier 102 that rotates at a rotational speed decelerated from the rotational speed of the transmission shaft 19. Rotational power is transmitted to the axle 21 of the rear wheel WR. That is, the gear stage of the mechanical transmission 18 is “LOW”.

  When the rotational speed of the transmission shaft 19 further increases and the transmission clutch 23 is in the connected state, the restriction by the one-way clutch 84 is released, and the clutch outer 76 of the transmission clutch 23 rotates together with the transmission shaft 19, so that the planetary gear mechanism 22 Then, the sun gear 103 rotates in the same direction as the ring gear 100, the difference in rotation of each gear in the planetary gear mechanism 22 disappears, and the gear position in the mechanical transmission 18 becomes "HIGH". In addition, such shift stage switching in the mechanical transmission 18 occurs when the gear ratio in the belt-type continuously variable transmission 16 is low.

  Further, the planetary gear mechanism 22 and the fourth power transmission gear 96 are partially overlapped with the clutch outer 76 of the transmission clutch 23 when viewed from the direction along the axes of the transmission shaft 19 and the intermediate shaft 20. The relative positions of the planetary gear mechanism 22 and the fourth power transmission gear 96 with respect to the clutch outer 76 are set in the axial direction of the transmission shaft 19 and the intermediate shaft 20, and at least a part of the output gear 97 is connected to the intermediate shaft. 20 and the axial direction of the transmission shaft 19, the relative position of the output gear 97 relative to the clutch outer 76 in the axial direction of the intermediate shaft 20 and the transmission shaft 19 is such that it overlaps with the clutch outer 76. Is set.

  That is, in FIG. 6 as viewed from the direction along the axis of the transmission shaft 19 and the intermediate shaft 20, the clutch outer 76 is disposed so as to cross the planetary gear mechanism 22 so that the outer periphery thereof is indicated by a chain line. The fourth power transmission gear 96 having the same diameter as the third power transmission gear 95 formed integrally with the ring gear 100 of the gear mechanism 22 also traverses in the same manner, and the belt type continuously variable transmission 16 side of the output gear 97 A third vertical plane PL3 passing through the end surface of the clutch crosses the clutch outer 76.

  The output gear 97 is integrally formed near the case main body 30 of the intermediate shaft 20 whose both ends are rotatably supported by the case main body 30 and the gear cover 32. The fourth power transmission gear 96, The planetary gear mechanism 22 and the third power transmission gear 95 are configured to be assembled to the intermediate shaft 20 from the gear cover 32 side of the intermediate shaft 20. That is, in the planetary gear mechanism 22, the supported cylindrical portion 96 a integrally included in the fourth power transmission gear 96 is fitted to the cylindrical boss portion 104 included in the planet carrier 102 so as to be relatively rotatable, and the boss portion 104 is Since the sun gear 103 is spline-coupled to the intermediate shaft 20, the sun gear 103 is spline-coupled to the supported cylindrical portion 96 a, and the ring gear 100 integrally including the third power transmission gear 95 is fitted to the intermediate shaft 20. The transmission gear 96 and the planetary gear mechanism 22 having the ring gear 100 integrally formed with the third power transmission gear 95 can be assembled to the intermediate shaft 20 from the gear cover 32 side.

  2 and 3, the vehicle front-rear direction front portion of the support arm 106 that sandwiches the rear wheel WR with the transmission case 29 is fastened to the crankcase 13 of the engine body 12. A projecting end portion of the axle 21 passing through the wheel hub 25 of the rear wheel WR and a cylindrical spacer 107 disposed between the wheel hub 25 and the support arm 106 is formed on the support arm 106. The rear end portion is rotatably supported via an eighth bearing 108 which is a ball bearing.

  The rear wheel WR is formed with a housing recess 109 for housing a part of the mechanical transmission 18 on one side in the vehicle width direction of the connecting portion 27 (left side in this embodiment). A disc brake 110 is provided as a rear wheel brake disposed on the other side of the connecting portion 27 in the vehicle width direction (right side in this embodiment).

  The first power transmission gear 74 and the planetary gear mechanism 22 are placed in the housing recess 109 so as to overlap a part of the wheel rim 26 when viewed from the direction orthogonal to the axes of the transmission shaft 19 and the intermediate shaft 20. Be placed. That is, the first power transmission gear 74 and the planetary gear mechanism 22 are arranged at positions corresponding to a part of the wheel rim 26 in the axial direction of the transmission shaft 19 and the intermediate shaft 20, and the case main body of the wheel rim 26 is The first power transmission gear 74 and the planetary gear mechanism 22 are disposed between the fifth vertical plane PL5 extending in the vehicle longitudinal direction through the edge on the 30 side and the wheel hub 25 of the rear wheel WR.

  In addition, the wheel hub 25 is formed so as to overlap the wheel rim 26 when viewed from a direction orthogonal to the axis of the axle 21, and the brake disc 111 of the disc brake 110 is connected to the other side of the connecting portion 27 in the vehicle width direction. It is attached to the wheel hub 25 so as to be arranged on the right side in this embodiment. That is, the wheel hub 25 is disposed at a position corresponding to the wheel rim 26 in the axial direction of the axle 21, and the sixth vertical plane PL6 passing through the end surface of the wheel hub 25 opposite to the transmission case 29 is In the embodiment, a seventh vertical plane PL7 that passes through the edge of the wheel rim 26 opposite to the transmission case 29 and passes through the end surface of the wheel hub 25 on the transmission case 29 side is, in this embodiment, It passes through the wheel rim 26.

  An annular protrusion 112 coaxial with the axle 21 is integrally formed on the end surface of the wheel hub 25 opposite to the transmission case 29, and the brake disc 111 is formed on the annular protrusion 112. Fastened with bolts 113.

  In this embodiment, a parking drum brake 115 having a brake drum 114 fixed to the spacer 107 is disposed between the rear end portion of the support arm 106 and the wheel hub 25. The brake 115 may be omitted.

  4 to 6 and 9, the intermediate shaft 20 is coaxially formed with a first central oil passage 116 extending over the entire length in the axial direction for supplying oil to the planetary gear mechanism 22 and the fifth bearing 71. Is done. Further, the transmission shaft 19 is formed with a second central oil passage 117 for supplying oil to the seventh bearing 80 coaxially at least in a portion corresponding to the mechanical transmission chamber 34 of the transmission shaft 19. In the embodiment, a second central oil passage 117 whose one end is opened on the end face of the transmission shaft 19 on the gear cover 32 side extends to a portion corresponding to the seventh bearing 80 and is formed coaxially with the transmission shaft 19. Is done.

  The case main body 30 is formed with a first oil supply passage 118 for supplying oil to the first central oil passage 116, and the gear cover 32 is formed with a second oil supply passage 119 for supplying oil to the second central oil passage 117, Second oil supply passages 118 and 119 are disposed in parallel to the mating surface 88 of the case main body 30 and the gear cover 32.

  The oil accumulated in the mechanical transmission chamber 34 is first and second power transmission gears 74 and 75 disposed coaxially with the transmission shaft 19 and third disposed coaxially with the intermediate shaft 20. And the fourth power transmission gears 95 and 96 are agitated and scattered in the mechanical transmission chamber 34, but the case main body 30 and the gear cover 32 are disposed at portions corresponding to the upper part of the intermediate shaft 20. A flange 120 that receives the oil pumped up by the first and second power transmission gears 74 and 75 is formed, and the upper ends of the first and second oil supply passages 118 and 119 communicate with both longitudinal ends of the flange 120. To do.

  The first oil supply passage 118 extends vertically so as to pass through the fifth bearing housing 70 and communicates with the first central oil passage 116, and the lower end opening of the first oil supply passage 116 is screwed into the case main body 30. The plug member 121 is closed. Further, the second oil supply passage 119 is formed in the gear cover 32 so as to be inclined downward from the flange portion 120 so that the lower end portion thereof opens into the first bearing housing 56 and communicates with the second central oil passage 117. The

  Next, the operation of this embodiment will be described. The power transmission device T is capable of changing the rotational speed of the power from the engine E steplessly, and is a belt type unit provided between the engine E and the transmission shaft 19. A stage transmission 16 and a mechanical transmission 18 that is interposed between the axle 21 and the transmission shaft 19 of the rear wheel WR and includes a planetary gear mechanism 22 and a transmission clutch 23 that switches the gear stage of the planetary gear mechanism 22. A second power transmission gear 75 that rotates together with the clutch outer 76 of the speed change clutch 23 is coaxially disposed on the transmission shaft 19, and a first power transmission gear 74 is fixed to the transmission shaft 19, and is parallel to the transmission shaft 19. A planetary gear mechanism 22 having a ring gear 100 that rotates together with a third power transmission gear 95 that meshes with the first power transmission gear 74 on the intermediate shaft 20 having a simple axis. It is arranged coaxially. On the other hand, a part of the mechanical transmission 18 is accommodated on one side in the vehicle width direction of the connecting portion 27 in the rear wheel WR provided with a connecting portion 27 that connects the wheel rim 26 to which the tire 28 is mounted and the wheel hub 25. A housing recess 109 is formed, a disc brake 110 serving as a rear wheel brake disposed on the other side in the vehicle width direction of the connecting portion 27 is provided, and the first power transmission gear 74 and the planetary gear mechanism 22 are It is disposed in the receiving recess 109 so as to overlap a part of the wheel rim 26 when viewed from the direction orthogonal to the axis of the transmission shaft 19 and the intermediate shaft 20. Accordingly, the housing recess 109 can be formed large, and the first power transmission gear 74 and the planetary gear mechanism 22 that overlap with a part of the wheel rim 26 when viewed from the direction orthogonal to the axes of the transmission shaft 19 and the intermediate shaft 20 are provided. As a result of being disposed in the housing recess 109, it is possible to suppress protrusion of the power transmission device T from the rear wheel WR to the outside in the vehicle width direction, and to reduce the size in the vehicle width direction.

  Further, since the wheel hub 25 is formed so as to overlap the wheel rim 26 when viewed from the direction orthogonal to the axis of the axle 21 of the rear wheel WR, the wheel rim 26 and the wheel hub 25 are aligned along the axis of the axle 21. The wheel hub 25 can be sufficiently secured to prevent the wheel hub 25 from protruding to the other side in the vehicle width direction, and the appearance of the wheel can be improved. Moreover, since the brake disc 111 of the disc brake 110 is attached to the wheel hub 25 so as to be disposed on the other side in the vehicle width direction of the connecting portion 27, the power disposed on the one side in the vehicle width direction of the connecting portion 27. Interference of the disc brake 111 with the transmission device T can be prevented, the power transmission device T can be efficiently brought close to the rear wheel WR side, and the disc brake 111 can be easily attached.

  A part of a transmission case 29 that accommodates the belt-type continuously variable transmission 16 and the mechanical transmission 18 includes a case main body 30 that extends in the vehicle front-rear direction on one side of the rear wheel WR, and the mechanical transmission. A gear cover 32 that is fastened to the case main body 30 so as to cover a part of the case main body 30 from the rear wheel WR side while forming a mechanical transmission chamber 34 that accommodates the housing 18 with the case main body 30. An end of the transmission shaft 19 on the gear cover 32 side is rotatably supported by the gear cover 32 via a first bearing 57, and an end of the intermediate shaft 20 on the gear cover 32 side is A third bearing 62 is interposed between the axle 21 and the gear cover 32 that is rotatably supported by the gear cover 32 via a second bearing 59 and rotatably passes through the gear cover 32. The end portion of the bearing 59 on the rear wheel WR side is disposed closer to the rear wheel WR than the end portion of the first and third bearings 57 and 62 opposite to the rear wheel WR. The planetary gear mechanism 22 and the fourth power transmission gear 96 disposed coaxially with the shaft 20 can be disposed closer to the rear wheel WR side, and the power transmission device T from the rear wheel WR to the outside in the vehicle width direction can be disposed. The amount of protrusion can be reduced.

  The transmission clutch 23, the second power transmission gear 75, and the first power transmission gear 74 are arranged in this order from the belt type continuously variable transmission 16 side in the direction along the axis of the transmission shaft 19, The outer diameters D1 and D2 of the first and second power transmission gears 74 and 75 are set to be smaller than the outer diameter DC of the speed change clutch 23, and the gear cover 32 is disposed radially outside the first and second power transmission gears 74 and 75. A relief recess 82 is formed on the outer surface of the gear rim 26 so that a part of the wheel rim 26 is disposed. The recess 82 can be formed, and by disposing a part of the wheel rim 26 in the escape recess 82, the power transmission device T can be disposed closer to the rear wheel WR side, It is possible to further reduce the amount of protrusion of the power transmission device T in the vehicle width direction outer side from the wheel WR.

  The output gear 97, the fourth power transmission gear 96, and the planetary gear mechanism 22 are arranged in this order from the belt type continuously variable transmission 16 side in the direction along the axis of the intermediate shaft 20, and the second The power transmission gear 75, the first power transmission gear 74, the fourth power transmission gear 96, and the planetary gear mechanism 22 are located closer to the rear wheel WR than the end of the output gear 97 on the belt-type continuously variable transmission 16 side. Therefore, even if the width along the axial direction of the intermediate gear 97 is increased, the direction along the axial lines of the first power transmission gear 74, the second power transmission gear 75, the fourth power transmission gear 96, and the planetary gear mechanism 22. It can be made not to affect the position of. Accordingly, it is possible to reduce the size of the power transmission device T along the vehicle width direction while ensuring the degree of freedom of setting the width along the axial direction of the output gear 97.

  Further, the planetary gear mechanism 22 and a part of the fourth power transmission gear 96 overlap the clutch outer 76 as viewed from the direction along the axis of the transmission shaft 19 and the intermediate shaft 20. The relative positions of the planetary gear mechanism 22 and the fourth power transmission gear 96 with respect to the clutch outer 76 are set, and at least a part of the output gear 97 is from a direction orthogonal to the axes of the intermediate shaft 20 and the transmission shaft 19. Since the relative position of the output gear 97 with respect to the clutch outer 76 is set so as to overlap the clutch outer 76 as seen, the power transmission device T in the vehicle width direction can be reduced in size and the vehicle width can be reduced. The power transmission device T can be downsized in a direction orthogonal to the direction, and the power transmission device T can be further downsized.

  In addition, a restricting member 86 configured to cooperate with a rotation preventing member 85 supported by the clutch outer 76 to form a one-way clutch 84 that restricts the rotation direction of the clutch outer 76 is provided for the intermediate shaft 20 and the transmission shaft 19. Since it is arranged between the clutch outer 76 and the second power transmission gear 75 in the axial direction of the transmission shaft 19 while overlapping with the output gear 97 when viewed from the direction orthogonal to the axis, the regulating member of the one-way clutch 84 86 is disposed in a region surrounded by the clutch outer 76, the second power transmission gear 75, and the output gear 97, and the restriction member 86 can be efficiently disposed in the region, so that power transmission in the vehicle width direction can be performed. The apparatus T can be further reduced in size.

  Further, the gear cover 32 supports the restricting member 86 having a collar 87 interposed between the gear main body 30 and the case main body 30 in cooperation with the case main body 30, while the case main body 30 has the case main body 30 from the rear wheel WR side. The gear cover 32 and the mating surface 88 of the case main body 30 are fastened to the case main body 30 so as to partially cover the rear wheel WR with respect to the collar 87 and the contact surface 94 of the restriction member 86. Since it is arranged on the opposite side, the fastening boss for the bolt 93 for fastening the gear cover 32 to the case main body 30 suppresses the amount of protrusion from the transmission case 29 to the rear wheel WR side, thereby making the mechanical transmission 18 more Since it is possible to arrange the power transmission device T and the rear wheel WR closer to the rear wheel WR side, the power transmission device T and the rear wheel WR can be more compactly arranged in the vehicle width direction. In addition, since the collar 87 is interposed between the regulating member 86 and the case main body 30, the regulating member 86 is supported at a position spaced in the vehicle width direction with respect to the mating surface 88 of the gear cover 32 and the case main body 30. The degree of freedom of arrangement of the regulating member 86 in the vehicle width direction can also be ensured.

  A clutch inner 77 of the transmission clutch 23 is coupled to the transmission shaft 19 so as not to rotate relative to the transmission shaft 19, and the clutch outer 76 is supported on the transmission shaft 19 so as to be rotatable relative to the transmission shaft 19. Since part of the fourth power transmission gear 96 is disposed so as to overlap at least part of the sun gear 103 in the planetary gear mechanism 22 as seen, the sun gear 103 and the fourth power transmission gear in the direction along the axis of the intermediate shaft 20. 96 can be arranged in a compact manner.

  A cylindrical boss 104 that is coupled to the intermediate shaft 20 so as not to rotate relative to the intermediate shaft 20 is provided integrally with the planetary carrier 102 in the planetary gear mechanism 22. Since the fourth power transmission gear 96 that overlaps at least a part of the boss 104 when viewed from the orthogonal direction is supported so as to be relatively rotatable, the planetary carrier 102 and the fourth power transmission gear in the direction along the axis of the intermediate shaft 20. 96 can be arranged in a compact manner.

  Further, the output gear 97 is integrally formed near the case main body 30 of the intermediate shaft 20 whose both ends are rotatably supported by the case main body 30 and the gear cover 32, and the fourth power transmission gear 96, the planetary gear, and the like. Since the mechanism 22 and the third power transmission gear 95 are configured so that they can be assembled to the intermediate shaft 20 from the end of the intermediate shaft 20 on the gear cover 32 side, the second shaft to the intermediate shaft 20 integrally having the output gear 97 is provided. The four power transmission gear 96, the planetary gear mechanism 22 and the third power transmission gear 96 can be easily assembled.

  Further, the case main body 30 is formed with a bulging portion 65 that bulges toward the belt-type continuously variable transmission chamber 33 that accommodates the belt-type continuously variable transmission 16. A fourth bearing 67 is interposed between the transmission shaft 19 and the transmission shaft 19, and at least one of the fourth bearings 67 is provided on a part of the driven pulley 39 constituting a part of the belt type continuously variable transmission 16. Since the driven pulley 39 is supported by the transmission shaft 19 in the belt-type continuously variable transmission chamber 33 so that the portion overlaps when viewed from the direction orthogonal to the axis of the transmission shaft 19, the mechanical transmission A part of the chamber 34 is inflated toward the belt-type continuously variable transmission chamber 33, so that the belt-type continuously variable transmission chamber 33 and the mechanical transmission chamber 34 are formed in a compact manner in the axial direction of the transmission shaft 19. And miniaturization of the power transmission device T in the vehicle width direction. It is possible to achieve layer.

  Further, the transmission shaft 19 and the intermediate shaft 20 are rotatably supported by the case main body 30 and the gear cover 32, and the case main body 30 is supplied with oil to a first central oil passage 116 formed coaxially with the intermediate shaft 20. The first oil supply passage 118 is formed, and the gear cover 32 is supplied with a second central oil passage 117 coaxially formed at least in a portion corresponding to the mechanical transmission chamber 34 of the transmission shaft 19. Since the passage 119 is formed, and the first and second oil supply passages 118 and 119 are arranged in parallel to the mating surface 88 of the case main body 30 and the gear cover 32, the first and second oil supply passages 118, In forming the 119, the portions for forming the oil supply passages 118, 119 are prevented from protruding from the transmission case 29 in the vehicle width direction, and the power in the vehicle width direction is suppressed. The size of the reach device T can be further reduced.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

16 ... belt type continuously variable transmission 18 ... mechanical transmission 19 ... transmission shaft 20 ... intermediate shaft 21 ... axle 22 ... planetary gear mechanism 23 ... transmission clutch 25 ..Wheel hub 26 ... wheel rim 27 ... connecting portion 28 ... tire 29 ... transmission case 30 ... case main body 31 ... cover member 33 ... belt type continuously variable transmission chamber 32 ... gear cover 34 ... mechanical transmission chamber 39 ... driven pulley 57 ... first bearing 59 ... second bearing 62 ... third bearing 65 ... bulge Portion 67 ... Fourth bearing 74 ... First power transmission gear 75 ... Second power transmission gear 76 ... Clutch outer 77 ... Clutch inner 82 ... Relief recess 84 ... One way Clack 85 ... Anti-rotation member 86 ... Restriction member 87 ... Color 8 ... mating surface 94 ... contact surface 95 ... third power transmission gear 96 ... fourth power transmission gear 97 ... output gear 100 ... ring gear 101 ... planetary gear 102- ··· Planetary carrier 103 ··· Sun gear 104 ··· Boss portion 109 · · · Containing recess portion 110 · · · Disc brake 111 that is a rear wheel brake · · · Brake disc D1 · · · Outer diameter of the first power transmission gear D2 ... outer diameter DC of second power transmission gear ... outer diameter E of transmission clutch E ... engine T as power source ... power transmission device WR ... rear wheel

According to the present invention, in addition to the configuration of the fifth feature, a part of the transmission case housing the belt-type continuously variable transmission and the mechanical transmission extends in the vehicle front-rear direction on one side of the rear wheel. The case main body and a gear cover that forms a mechanical transmission chamber that houses the mechanical transmission between the case main body and the both ends of the case main body and the gear cover are rotatably supported. The output gear is integrally formed near the case main body of the intermediate shaft, and the fourth power transmission gear, the planetary gear mechanism, and the third power transmission gear are moved from the end of the intermediate shaft on the gear cover side to the intermediate shaft. The eleventh feature is that it can be assembled.

According to the fifth aspect of the present invention, the speed change clutch, the first power transmission gear, and the second power transmission gear disposed on the transmission shaft are disposed at a position closest to the belt-type continuously variable transmission. Of the output gear, the fourth power transmission gear and the planetary gear mechanism disposed on the intermediate shaft, the output gear is disposed at a position closest to the belt-type continuously variable transmission, and the output gear on the belt-type continuously variable transmission side Since the second power transmission gear, the first power transmission gear, the fourth power transmission gear, and the planetary gear mechanism are arranged on the rear wheel side from the end portion, even if the width along the axial direction of the output gear is increased, The positions of the first power transmission gear, the second power transmission gear, the fourth power transmission gear, and the planetary gear mechanism in the direction along the axis can be prevented from being affected. Therefore, it is possible to reduce the size of the power transmission device along the vehicle width direction while ensuring the degree of freedom of setting the width along the axial direction of the output gear.

According to a tenth aspect of the present invention, the clutch inner of the shifting clutch is relatively non-rotatably coupled to the transmission shaft, the clutch outer is rotatably supported on the transmission shaft, the intermediate shaft to the planet carrier of the planetary gear mechanism A cylindrical boss portion that is coupled so as not to be relatively rotatable is integrally provided, and a fourth power transmission gear that overlaps at least a part of the boss portion as viewed from a direction orthogonal to the axis of the intermediate shaft is provided on an outer periphery of the boss portion. Since it is supported so as to be relatively rotatable, the planetary carrier and the fourth power transmission gear can be compactly arranged in a direction along the axis of the intermediate shaft.

The transmission clutch 23, the first power transmission gear 74, and the second power transmission gear 75 are arranged so that the transmission clutch 23, the second power transmission gear 75, and the first power transmission gear 74 are in a direction along the axis of the transmission shaft 19. They are arranged in order from the belt type continuously variable transmission 16 side. In addition, the outer diameters D 1 and D2 of the first and second power transmission gears 74 and 75 are set to be smaller than the outer diameter DC of the transmission clutch 23, and are radially outside of the first and second power transmission gears 74 and 75. A relief recess 82 is formed on the outer surface of the gear cover 32 so that a part of the wheel rim 26 of the rear wheel WR is disposed.

The connection rotational speed at which the shift clutch 23 is switched from the disconnected state to the connected state is higher than the connected rotational speed at which the start clutch 17 is switched from the disconnected state to the connected state, and the start clutch 17 is switched from the connected state to the disconnected state. I rotational speed remote high.

On the other hand, the portion of the inner surface of the gear cover 32 corresponding to the mounting arm portion 86 a is formed so as to be able to accommodate the tip end portion of the mounting arm portion 86 a and the collar 87, and the mounting arm of the regulating member 86. The portion 86a contacts the gear cover 32. A plurality of bolts 93 inserted into the case main body 30 from the side opposite to the rear wheel WR are screwed into the gear cover 32 and tightened, so that the gear cover 32 is placed between the case main body 30 and the collar 87. The regulating member 86 with the intervening therebetween is fastened to the case main body 30 in cooperation with the case main body 30, and the mating surface 88 of the gear cover 32 and the case main body 30 is The collar 87 and the contact surface 94 of the restricting member 86 are disposed on the opposite side of the rear wheel WR.

The fourth power transmission gear 96 integrally includes a cylindrical supported cylindrical portion 96a that coaxially surrounds the boss portion 104 and extends to the opposite side of the output gear 97, as shown in FIGS. As will be clearly shown, the axial length of the supported cylindrical portion 96 a is rotatably supported by the boss portion 104. Therefore, when viewed from the direction orthogonal to the axis of the intermediate shaft 20, the supported cylinder portion in which at least a part (a part in this embodiment) of the boss part 104 is a part of the fourth power transmission gear 96. A part of the boss part 104 is arranged in a position corresponding to the supported cylinder part 96 a in the axial direction of the intermediate shaft 20 .

The sun gear 103 is fixed to the outer periphery of the end of the supported cylindrical portion 96a opposite to the output gear 97 by spline coupling, and is viewed from a direction orthogonal to the axis of the intermediate shaft 20, A part of the fourth power transmission gear 96 (in this embodiment, the end of the supported cylindrical portion 96a opposite to the output gear 97) is disposed so as to overlap the sun gear 103, and the axis of the intermediate shaft 20 A part of the supported cylinder portion 96 a is arranged at a position corresponding to the sun gear 103 in the direction.

The first oil supply passage 118 is communicated with the first central oil passage 116 extending vertically so as to pass through the fifth bearing housing 70, the lower end opening of the first oil supply passage 11 8, screwed into the case main body 30 The plug member 121 is closed. Further, the second oil supply passage 119 is formed in the gear cover 32 so as to be inclined downward from the flange portion 120 so that the lower end portion thereof opens into the first bearing housing 56 and communicates with the second central oil passage 117. The

The output gear 97, the fourth power transmission gear 96, and the planetary gear mechanism 22 are arranged in this order from the belt type continuously variable transmission 16 side in the direction along the axis of the intermediate shaft 20, and the second The power transmission gear 75, the first power transmission gear 74, the fourth power transmission gear 96, and the planetary gear mechanism 22 are located closer to the rear wheel WR than the end of the output gear 97 on the belt-type continuously variable transmission 16 side. Even if the width along the axial direction of the output gear 97 is increased, the direction along the axial lines of the first power transmission gear 74, the second power transmission gear 75, the fourth power transmission gear 96, and the planetary gear mechanism 22 is increased. It can be made not to affect the position of. Accordingly, it is possible to reduce the size of the power transmission device T along the vehicle width direction while ensuring the degree of freedom of setting the width along the axial direction of the output gear 97.

16 ... belt type continuously variable transmission 18 ... mechanical transmission 19 ... transmission shaft 20 ... intermediate shaft 21 ... axle 22 ... planetary gear mechanism 23 ... transmission clutch 25 ..Wheel hub 26 ... wheel rim 27 ... connecting portion 28 ... tire 29 ... transmission case 30 ... case main body 31 ... cover member 33 ... belt type continuously variable transmission chamber 32 ... gear cover 34 ... mechanical transmission chamber 39 ... driven pulley 57 ... first bearing 59 ... second bearing 62 ... third bearing 65 ... bulge Portion 67 ... Fourth bearing 74 ... First power transmission gear 75 ... Second power transmission gear 76 ... Clutch outer 77 ... Clutch inner 82 ... Relief recess 84 ... One way clutch 85 ... detent member 86 ... regulating member 87 ... Kara 88 ... Matching surface 94 ... Abutting surface 95 ... Third power transmission gear 96 ... Fourth power transmission gear 97 ... Output gear 100 ... Ring gear 101 ... Planetary gear 102- ··· Planetary carrier 103 ··· Sun gear 104 ··· Boss portion 109 · · · Containing recess portion 110 · · · Disc brake 111 that is a rear wheel brake · · · Brake disc D1 · · · Outer diameter of the first power transmission gear D2 ... outer diameter DC of second power transmission gear ... outer diameter E of transmission clutch E ... engine T as power source ... power transmission device WR ... rear wheel

Claims (12)

  A belt-type continuously variable transmission (16) provided between the power source (E) and the transmission shaft (19), which allows the rotational speed of the power from the power source (E) to be steplessly changed; A planetary gear mechanism (22) and a gear position of the planetary gear mechanism (22) are interposed between the axle (21) of the rear wheel (WR) provided with the wheel brake (110) and the transmission shaft (19). A transmission (18) including a transmission clutch (23) for switching, and the transmission shaft (19) rotates together with the transmission clutch (23) and the clutch outer (76) of the transmission clutch (23). The second power transmission gear (75) is disposed coaxially and the first power transmission gear (74) is fixed, and the intermediate shaft (20) having an axis parallel to the transmission shaft (19) is connected to the intermediate shaft (20). A planetary gear mechanism (22); A third power transmission gear (95) that meshes with the first power transmission gear (74) so as to rotate together with the ring gear (100) of the planetary gear mechanism (22), and a sun gear (103) of the planetary gear mechanism (22). A fourth power transmission gear (96) meshing with the second power transmission gear (75) so as to rotate therewith is coaxially disposed, and an output gear (97) for transmitting power to the axle (21). A wheel rim (25) that surrounds the wheel hub (25) so that the rear wheel (WR) is fixed and the wheel hub (25) supported by the axle (21) and a tire (28) are attached. 26) and a connecting portion (27) for connecting the wheel hub (25) and the wheel rim (26), and the belt-type continuously variable transmission (16) is disposed in the front in the vehicle width direction. In a power transmission device for a saddle-ride type vehicle disposed so as to sandwich the mechanical transmission (18) with a connecting portion (27), the vehicle of the connecting portion (27) is connected to the rear wheel (WR). A housing recess (109) for housing a part of the mechanical transmission (18) is formed on one side in the width direction, and a rear wheel brake (on the other side in the vehicle width direction of the connecting portion (27)) ( 110), and when the first power transmission gear (74) and the planetary gear mechanism (22) are viewed from a direction orthogonal to the axes of the transmission shaft (19) and the intermediate shaft (20), the wheel rim ( 26) A power transmission device for a saddle-ride type vehicle, wherein the power transmission device is disposed in the housing recess (109) so as to overlap a part of the vehicle.   The wheel hub (25) is formed so as to overlap the wheel rim (26) when viewed from the direction orthogonal to the axis of the axle (21), and the brake disc (110) of the disc brake (110) as the rear wheel brake ( The power transmission of the saddle-ride type vehicle according to claim 1, wherein 111) is attached to the wheel hub (25) so as to be disposed on the other side in the vehicle width direction of the connecting portion (27). apparatus.   The belt-type continuously variable transmission (16) and the transmission case (29) for housing the mechanical transmission (18) are provided, and the transmission case (29) is a vehicle on one side of the rear wheel (WR). A case main body (30) extending in the front-rear direction and a belt type continuously variable transmission chamber (33) accommodating the belt type continuously variable transmission (16) are formed between the case main body (30) and the rear body. A cover member (31) fastened to the case main body (30) from the side opposite to the wheel (WR) and a mechanical transmission chamber (34) for housing the mechanical transmission (18) are arranged in the case main body ( 30) and a gear cover (32) fastened to the case main body (30) so as to cover a part of the case main body (30) from the rear wheel (WR) side. The end of the transmission shaft (19) on the gear cover (32) side is the first An end of the intermediate shaft (20) on the gear cover (32) side is supported by the gear cover (32) via a bearing (57), and the gear cover (32) is interposed via a second bearing (59). ), A third bearing (62) is interposed between the axle (21) and the gear cover (32), which is rotatably supported by the gear cover (32), and a second bearing (59). ) On the side of the rear wheel (WR) side of the first and third bearings (57, 62) on the side of the rear wheel (WR) with respect to the end on the opposite side of the rear wheel (WR). The power transmission device for a saddle-ride type vehicle according to claim 1, wherein the power transmission device is disposed.   The belt-type continuously variable transmission (16) and the transmission case (29) for housing the mechanical transmission (18) are provided, and the transmission case (29) is a vehicle on one side of the rear wheel (WR). A case main body (30) extending in the front-rear direction and a belt type continuously variable transmission chamber (33) accommodating the belt type continuously variable transmission (16) are formed between the case main body (30) and the rear body. A cover member (31) fastened to the case main body (30) from the side opposite to the wheel (WR) and a mechanical transmission chamber (34) for housing the mechanical transmission (18) are arranged in the case main body ( 30) and a gear cover (32) fastened to the case main body (30) so as to cover a part of the case main body (30) from the rear wheel (WR) side. In the direction along the axis of the transmission shaft (19), the speed change clutch (2 ), The second power transmission gear (75) and the first power transmission gear (74) are arranged in this order from the belt type continuously variable transmission (16) side, and the first and second power transmission gears ( 74, 75) is set to be smaller than the outer diameter (DC) of the transmission clutch (23), and the outer diameter (DC) of the first and second power transmission gears (74, 75) is The power of the saddle-ride type vehicle according to claim 1, wherein an escape recess (82) in which a part of the wheel rim (26) is arranged is formed on an outer surface of the gear cover (32). Transmission device.   In the direction along the axis of the transmission shaft (19), the transmission clutch (23), the second power transmission gear (75) and the first power transmission gear (74) are arranged in this order in the belt type continuously variable transmission (16). The output gear (97), the fourth power transmission gear (96) and the planetary gear mechanism (22) are arranged in this order in the belt type in a direction along the axis of the intermediate shaft (20). The second power transmission gear (75), the first power transmission gear (74), the fourth power transmission gear (96) and the planetary gear mechanism (22) are arranged so as to be lined up from the continuously variable transmission (16) side. The saddle-ride type vehicle according to claim 1, wherein the output gear (97) is disposed closer to the rear wheel (WR) than an end of the belt-type continuously variable transmission (16). Power transmission device.   A part of the planetary gear mechanism (22) and the fourth power transmission gear (96) overlap the clutch outer (76) when viewed from the direction along the axis of the transmission shaft (19) and the intermediate shaft (20). Thus, the relative positions of the planetary gear mechanism (22) and the fourth power transmission gear (96) with respect to the clutch outer (76) are set, and at least a part of the output gear (97) is connected to the intermediate shaft ( 20) and the relative position of the output gear (97) with respect to the clutch outer (76) so as to overlap the clutch outer (76) when viewed from a direction orthogonal to the axis of the transmission shaft (19). The power transmission device for a saddle-ride type vehicle according to claim 5.   A regulating member (86) comprising a one-way clutch (84) for regulating the rotational direction of the clutch outer (76) in cooperation with a detent member (85) supported by the clutch outer (76), The clutch outer (76) and the clutch outer (76) in the axial direction of the transmission shaft (19) while overlapping with the output gear (97) when viewed from a direction orthogonal to the axis of the intermediate shaft (20) and the transmission shaft (19). The power transmission device for a saddle-ride type vehicle according to claim 6, wherein the power transmission device is disposed between the second power transmission gears (75).   The belt-type continuously variable transmission (16) and the transmission case (29) for housing the mechanical transmission (18) are provided, and the transmission case (29) is a vehicle on one side of the rear wheel (WR). A case main body (30) extending in the front-rear direction and a belt type continuously variable transmission chamber (33) accommodating the belt type continuously variable transmission (16) are formed between the case main body (30) and the rear body. A cover member (31) fastened to the case main body (30) from the side opposite to the wheel (WR) and a mechanical transmission chamber (34) for housing the mechanical transmission (18) are arranged in the case main body ( 30), and the gear cover (32) includes the collar (87) interposed between the gear cover (32) and the case main body (30). While supporting in cooperation with the subject (30) It is fastened to the case main body (30) so as to cover a part of the case main body (30) from the rear wheel (WR) side, and the gear cover (32) and the mating surface (88) of the case main body (30) The saddle riding type according to claim 7, wherein the saddle riding type is disposed on a side opposite to the rear wheel (WR) with respect to a contact surface (94) of the collar (87) and the regulating member (86). Vehicle power transmission device.   A clutch inner (77) of the transmission clutch (23) is coupled to the transmission shaft (19) so as not to be relatively rotatable, and the clutch outer (76) is supported by the transmission shaft (19) so as to be relatively rotatable. A gear mechanism (22) includes the ring gear (100) and the sun gear (103), a plurality of planetary gears (101) meshing with the ring gear (100) and the sun gear (103), and the planetary gears (101). And a planet carrier (102) for synchronously interlocking the output gear (97), and a fourth power transmission gear (96) of the fourth power transmission gear (96) as viewed from a direction perpendicular to the axis of the intermediate shaft (20). The power transmission device for a saddle-ride type vehicle according to claim 5, wherein a part of the sun gear (103) is arranged so as to overlap with at least a part of the sun gear (103).   A clutch inner (77) of the transmission clutch (23) is coupled to the transmission shaft (19) so as not to be relatively rotatable, and the clutch outer (76) is supported by the transmission shaft (19) so as to be relatively rotatable. A gear mechanism (22) includes the ring gear (100) and the sun gear (103), a plurality of planetary gears (101) meshing with the ring gear (100) and the sun gear (103), and the planetary gears (101). And a planetary carrier (102) for synchronously interlocking the output gear (97) and a cylindrical boss (104) coupled to the intermediate shaft (20) so as not to rotate relative thereto. Provided integrally with the planet carrier (102), the boss portion (1) is formed on the outer periphery of the boss portion (104) when viewed from a direction orthogonal to the axis of the intermediate shaft (20). At least a portion fourth power transmission gear overlapping (96) of the power transmission device for a saddle-type vehicle according to claim 5, characterized in that it is rotatably supported in 4).   A case main body in which a part of a transmission case (29) accommodating the belt-type continuously variable transmission (16) and the mechanical transmission (18) extends in the vehicle front-rear direction on one side of the rear wheel (WR). (30) and a gear cover (32) that forms a mechanical transmission (18) that houses the mechanical transmission (18) between the case main body (30) and the case main body (30 ) And the gear cover (32), the output gear (97) is integrally formed near the case main body (30) of the intermediate shaft (20) whose both ends are rotatably supported, and a fourth power transmission gear ( 96), the planetary gear mechanism (22) and the third power transmission gear (95) can be assembled to the intermediate shaft (20) from the end of the intermediate shaft (20) on the gear cover (32) side. In claim 5, characterized in that A power transmission device for a saddle type vehicle mounting.   The belt-type continuously variable transmission (16) and the transmission case (29) for housing the mechanical transmission (18) are provided, and the transmission case (29) is a vehicle on one side of the rear wheel (WR). A case main body (30) extending in the front-rear direction and a belt type continuously variable transmission chamber (33) accommodating the belt type continuously variable transmission (16) are formed between the case main body (30) and the rear body. A cover member (31) fastened to the case main body (30) from the side opposite to the wheel (WR) and a mechanical transmission chamber (34) for housing the mechanical transmission (18) are arranged in the case main body ( 30) and a gear cover (32) fastened to the case main body (30) so as to cover a part of the case main body (30) from the rear wheel (WR) side, The belt type continuously variable transmission chamber (33) is swelled toward the side. A fourth bearing (67) is interposed between the bulging portion (65) formed in the main body (30) and the transmission shaft (19) passing through the bulging portion (65), A part of the driven pulley (39) constituting a part of the belt type continuously variable transmission (16) has at least a part of the fourth bearing (67) from a direction perpendicular to the axis of the transmission shaft (19). The saddle riding according to claim 5, wherein the driven pulley (39) is supported by the transmission shaft (19) in the belt-type continuously variable transmission chamber (33) so as to overlap with each other. Type vehicle power transmission device.

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