JP4042872B2 - Driving device for motorcycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a motorcycle driving device for transmitting a starting power output from a starting drive source to a crankshaft of an engine via a gear-type interlocking means or the like.
[0002]
[Prior art]
  2. Description of the Related Art Conventionally, there is a motorcycle driving apparatus for a motorcycle described in Japanese Patent Laid-Open No. 4-246241.
[0003]
  According to this, the power transmission device which inputs the motive power from the engine for driving | running | working driving | running | working drive and transmits to the rear-wheel side, and the starting device which starts the said engine are provided. The power transmission device includes: an input shaft that is rotatable about an axis parallel to the crankshaft of the engine; a reduction gear that is positioned on the axis of the crankshaft and rotates with the crankshaft; A reduction gear supported by the input shaft and meshing with the reduction gear. The starting device includes a starting drive source that is a cell motor, and gear-type interlocking means for interlockingly connecting the reduction gear to the starting drive source.
[0004]
  The interlocking means includes an output gear that is arranged in parallel with the reduction gear in the axial direction of the input shaft and is attached to the reduction gear, and the interlocking means including the output gear is connected to the starting drive source. Is transmitted to the reduction gear.
[0005]
  When starting the engine, if the starting drive source is driven, the power is transmitted to the reduction gear via the interlocking means, and the crank is supplied from the reduction gear via the reduction gear. It is supposed that cranking is performed by being transmitted to the shaft.
[0006]
[Problems to be solved by the invention]
  In the prior art, the reduction gear and the output gear are arranged side by side on the axis of the input shaft, and the overall width dimension of the reduction gear and the output gear in the axial direction of the input shaft. Tends to increase, that is, the width of the starting device in the axial direction of the input shaft tends to increase.
[0007]
  However, in general, a driving device for driving mounted on a motorcycle has a crankshaft of the engine and an input shaft of the power transmission device extending in the vehicle width direction. When the width dimension of the starting device in the axial direction is increased, the width dimension of the motorcycle is increased correspondingly, and there is a problem that the vehicle running performance and handling properties as a saddle riding type are deteriorated.
[0008]
  On the other hand, in order to reduce the capacity of the starting drive source, it is conceivable to increase the speed reduction ratio by increasing the number of reduction stages in the interlocking means.
[0009]
  However, simply increasing the number of reduction gears increases the number of gears, and the shape of the interlocking device in side view increases. Therefore, there arises a problem that the shape of the motorcycle in side view is unnecessarily large.
[0010]
  The present invention has been made paying attention to the circumstances as described above, to reduce the width dimension of the motorcycle, improve the vehicle running performance and handleability as a saddle riding type in this motorcycle, and It is an object of the present invention to prevent the motorcycle from being unnecessarily large in shape when viewed from the side.
[0011]
[Means for Solving the Problems]
  In order to solve the above-mentioned problems, the driving device for a motorcycle according to the present invention is as follows.
[0012]
  The invention of claim 1 is provided with a power transmission device 26 for inputting the power from the engine 24 and transmitting it to the rear wheel 15 side, and a starting device 27 for starting the engine 24,
[0013]
  The power transmission device 26 is supported by an input shaft 44 that is rotatable about an axis parallel to the crankshaft 31 of the engine 24, a reduction gear 46 that rotates together with the crankshaft 31, and the input shaft 44. And a reduction gear 47 that meshes with the reduction gear 46,
[0014]
  In the motorcycle, the starting device 27 includes a starting drive source 57 and gear-type interlocking means 59 for interlockingly connecting the reduction gear 47 to the starting drive source 57.
[0015]
  The output gear 72 that outputs the starting power in the interlocking means 59 is directly meshed with the reduction gear 47.,
[0016]
  UpThe interlocking means 59 includes a pair of intermediate shafts 68 and 69 arranged in parallel with the input shaft 44, and the intermediate gear 68 outputs the output gear 72 and the cell motor 58 as the starting drive source. The input gear 71 that rotates by inputting the starting power to be supported is supported, and the other intermediate shaft 69 is supported by the interlocking gear set 81 that interlocks and connects the output gear 72 to the input gear 71. When the vertical line 60 passing through the axis of the input shaft 44 is set in a side view, the crankshaft 31 and the reduction gear 46 are disposed in front of the vertical line 60 in the front-rear direction of the motorcycle 1, The cell motor 58 and the intermediate shafts 68 and 69 are arranged behind the vertical line 60, and the axis of the cell motor 58 is arranged between the shafts of the intermediate shafts 68 and 69.
[0017]
  Claim2The invention of claim1'sIn addition to the invention, a one-way clutch 76 is interposed in the power transmission path of the interlocking means 59, and the one-way clutch 76 is externally fitted to the one intermediate shaft 68. The inner housing 77 is freely rotatable on the inner housing 77. In a motorcycle comprising an outer housing 78 fitted on the outer surface and an engaging / disengaging means 79 for engaging and disengaging both the housings 77, 78,
[0018]
  The output gear 72 is integrally formed on the outer peripheral surface of the outer housing 78 outside the engagement / disengagement means 79 in the radial direction.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
  2 and 3, reference numeral 1 denotes a motorcycle, arrow Fr indicates the front thereof, and the left and right described below refer to the vehicle width direction toward the front.
[0021]
  The body frame 2 of the motorcycle 1 has a head pipe 3 at its front end, and a main frame 4 extends from the upper part of the head pipe 3 toward the rear lower side. A rear arm bracket 5 extends downward from the extending end of the main frame 4. Further, the length of the head pipe 3 extends from the lower part of the head pipe 3 to the lower side once, and further extends in a bifurcated manner from here. A pair of left and right down tubes 6 extending substantially horizontally are provided, and the extending ends of the rear arm brackets 5 and the down tubes 6 are coupled to each other.
[0022]
  A seat bracket 10 is supported by fasteners 9 on the extended ends of the main frame 4 and the extended ends of the rear arm brackets 5. The seat bracket 10 projects rearward and upward from the rear arm bracket 5 side, is a monocoque frame made of fiber reinforced resin (made of FRP), is hollow, and has an internal space 11.
[0023]
  A front fork (not shown) is supported on the head pipe 3 so as to be steerable. A front wheel is supported on the lower end of the front fork, and a handle is attached to the upper end of the front fork.
[0024]
  A rear arm 14 is pivotally supported on the lower portion of the rear arm bracket 5 by a pivot shaft 13 so as to be swingable up and down, and a rear wheel 15 is supported on a swing end of the rear arm 14. A shock absorber 16 is installed between the extended end of the main frame 4 and the rear arm 14 via a link mechanism 17. A fender 18 is provided to cover the rear wheel 15 from above, and the fender 18 is supported at the rear end of the seat bracket 10.
[0025]
  A fuel tank 21 is supported on the main frame 4, and a seat 22 is placed and supported from the upper surface of the fuel tank 21 to the upper surface of the seat bracket 10.
[0026]
  1 to 4, the motorcycle 1 is equipped with a traveling drive device 23 supported by the vehicle body frame 2. The travel drive device 23 includes a four-cycle engine 24 that is an internal combustion engine, and a power transmission device 26 that inputs power output from the engine 24 and outputs the power to the chain winding means 25 on the rear wheel 15 side. ing. That is, the rear wheel 15 is linked to the engine 24 via the power transmission device 26 and the chain winding means 25. A starting device 27 for starting the engine 24 is also provided.
[0027]
  The engine 24 includes a crankcase 30 fastened to the body frame 2 by a fastener 29, a crankshaft 31 supported in the crankcase 30 so as to be rotatable about an axis extending in the vehicle width direction, And a cylinder 32 projecting upward from the crankcase 30 substantially vertically. The crankcase 30 includes a case main body 30a formed by combining a pair of left and right case halves that support the crankshaft 31, and left and right case covers that open and close the left and right side openings of the case main body 30a. 30b, 30c.
[0028]
  An intake pipe 35 extends rearward from the rear surface of the cylinder 32. A carburetor 36 is interposed in the middle of the intake pipe 35, and fuel is supplied from the fuel tank 21 to the carburetor 36. In this case, the left rear arm bracket 5 is bent forward and the left side of the carburetor 36 is opened to the outside of the vehicle, so that the maintenance and inspection work of the carburetor 36 can be facilitated. An air cleaner 37 is attached to the extended end of the intake pipe 35, and the air cleaner 37 is also configured in the internal space 11 of the seat bracket 10 to simplify the configuration. In addition, an air introduction port 38 for communicating the inside and outside of the internal space 11 is formed in the upper surface plate of the seat bracket 10, and the outside of the motorcycle 1 on the rear side of the motorcycle 1 is introduced into the lower surface of the seat 22. A groove-shaped air passage 39 communicating with the port 38 is formed.
[0029]
  The exterior outside the motorcycle 1 communicates with the inside of the cylinder 32 through the air passage 39, the air inlet 38, the air cleaner 37, the carburetor 36, the intake pipe 35, and an intake hole formed in the rear surface of the cylinder 32. It has been made.
[0030]
  On the other hand, an exhaust pipe 41 is provided that extends from the front surface of the cylinder 32 to the front and then bends and extends rearward. The inside of the cylinder 32 is formed on the front surface of the cylinder 32. Through the exhaust hole and the exhaust pipe 41, the motorcycle 1 communicates with the outside behind the motorcycle 1.
[0031]
  The power transmission device 26 includes a transmission case 43 that constitutes an outer shell thereof and is connected to the rear side of the crankcase 30, and the transmission case that is rotatable about an axis parallel to the crankshaft 31. 43 and an other unillustrated reduction shaft supported by the transmission case 43 so as to be rotatable about an axis parallel to the input shaft 44. The transmission case 43 includes a case main body 43a formed integrally with the case main body 30a of the crankcase 30, and left and right case covers 43b and 43c that open and close the left and right side openings of the case main body 43a. The left case covers 30b and 43b of the crankcase 30 and the transmission case 43 are integrally formed with each other, and the right case covers 30c and 43c are integrally formed with each other.
[0032]
  The power transmission device 26 is attached to the crankshaft 31 on the axis of the crankshaft 31 and rotates with the crankshaft 31, and the input shaft 44 is rotated around the axis. A reduction gear 47 that is supported so as to be freely rotatable and meshes with the reduction gear 46, and the input shaft 44 and the reduction gear arranged in parallel with the reduction gear 47 on the same axis as the input shaft 44. And a multi-plate friction clutch 48 that allows the power transmission to and from 47 to be freely connected and disconnected.
[0033]
  The clutch 48 is supported by the input shaft 44 so as to be free to rotate about its axis, and rotates with the reduction gear 47. The clutch drive side 49 can be frictionally joined to the clutch drive side 49. A clutch driven side 50 that rotates together with the input shaft 44 is provided. The outer diameter dimensions of the reduction gear 47 and the clutch 48 are substantially the same.
[0034]
  When the engine 24 is driven, the air 53 outside the vehicle is sucked into the air cleaner 37 through the air passage 39 and the air inlet 38 by the suction force of the cylinder 32 and purified there, and then the carburetor 36. To be directed. When the air 53 passes through the carburetor 36, fuel is mixed to generate an air-fuel mixture, which is sucked into the cylinder 32 through the intake pipe 35 and is used for combustion. The power generated by this combustion is output from the crankshaft 31. Further, the combustion gas generated by the combustion is discharged out of the vehicle through the exhaust pipe 41 as the exhaust 54.
[0035]
  The power (arrow A in FIG. 4) output from the crankshaft 31 is input to the input shaft 44 via the reduction gear 46, the reduction gear 47, and the clutch 48 that has been connected. Is rotated (arrow B in FIG. 4). The power input to the input shaft 44 is transmitted to the rear wheel 15 via the speed reduction shaft and the chain winding means 25, so that the motorcycle 1 can travel on the travel surface.
[0036]
  The starting device 27 is electrically operated and includes a cell motor 58 that is a starting drive source 57 and gear-type interlocking means 59 that interlocks and connects the reduction gear 47 to the cell motor 58.
[0037]
  In a side view (FIGS. 2 and 4), the cell motor 58 is detachably attached to the upper portion of the transmission case 43 on the rear side of the perpendicular 60 passing through the axis of the clutch 48 by a fastener 62.
[0038]
  In this case, the cell motor 58 is positioned in a direction opposite to the cylinder 32 with respect to the perpendicular 60. For this reason, the cylinder 32 and the cell motor 58 are largely separated from each other across the vertical line 60. Therefore, maintenance and inspection work for the cell motor 58 can be easily performed without being obstructed by the cylinder 32. It is also suppressed that the cell motor 58 is heated by the heat from the cylinder 32.
[0039]
  Further, the clutch 48 is required to transmit a large torque, and its outer diameter size is increased, and the upper portion of the clutch 48 in the vicinity of the perpendicular 60 is located at a high place. Since the cell motor 58 is positioned on the rear side of the vertical line 60, the cell motor 58 can be positioned lower by avoiding interference with the cylinder 32 and the clutch 48, and accordingly, the center of gravity of the vehicle body can be lowered. .
[0040]
  Furthermore, since the cell motor 58 is attached to the transmission case 43 at the rear side of the perpendicular 60 as described above, the cell motor 58 is sufficiently rearward compared to the conventional technique in which the cell motor 58 is disposed at the front side of the perpendicular. Become.
[0041]
  Therefore, if the kick shaft 65 for supporting the kick pedal 64 is mounted at almost the mounting position in place of the cell motor 58, the kick pedal described above can be seen from the relationship between the handle of the motorcycle 1 and the general physique of the rider. The arrangement position of 64 is prevented from becoming too front, so that it can be made more appropriate in the front-rear direction.
[0042]
  As a result, the motorcycle 1 having the electric starter 27 and the motorcycle 1 having the kick starter 27 can be combined with the power transmission device 26 having a certain shape without much modification. In other words, the parts can be shared, which is useful for parts management.
[0043]
  The interlocking means 59 is disposed in the upper part of the mission case 43 on the rear side of the perpendicular 60.
[0044]
  For this reason, the interlocking means 59 can be positioned lower together with the cell motor 58 while avoiding interference with the cylinder 32 and the clutch 48.
[0045]
  Therefore, the center of gravity of the vehicle body can be lowered accordingly, which is beneficial in terms of maneuverability.
[0046]
  1, 2, and 4, the interlocking unit 59 includes a pair of intermediate shafts 68 and 69 that are arranged in parallel with the input shaft 44 and are respectively attached to the transmission case 43 by fasteners 67.
[0047]
  Of the intermediate shafts 68 and 69, one intermediate shaft 68 has an input gear 71 supported on its axis so as to freely rotate. The cell motor 58, which is the starting drive source 57, rotates its output shaft as indicated by an arrow C in FIG. 4, and its power is input to the input gear 71, whereby the input gear 71 is shown in FIG. It is rotated as indicated by arrow D. On one of the intermediate shafts 68, an output gear 72 is rotatably supported on the axis thereof, and the output gear 72 outputs the starting power transmitted from the cell motor 58 (in FIG. 4). Arrow D). The output gear 72 is directly meshed with the reduction gear 47. Further, another input gear 73 that is smaller in diameter than the input gear 71 and rotates integrally on the same axis as the input gear 71 is provided. Further, on the one intermediate shaft 68 described above, another output gear 74 arranged in parallel on the same axis as the output gear 72 is supported so as to be freely rotatable.
[0048]
  A one-way clutch 76 is interposed between the output gear 72 and the other output gear 74 on the axis of the one intermediate shaft 68 in the power transmission path of the interlocking means 59. The one-way clutch 76 includes an annular inner housing 77 that is rotatably fitted to the one intermediate shaft 68, and an annular outer housing 78 that is loosely fitted to the inner housing 77. The housings 77 and 78 are made up of engaging / disengaging means 79 for engaging / disengaging the housings 77 and 78. This engagement / disengagement means 79 is a well-known one composed of a roller fitted in a wedge-shaped groove, a roller for wedge action, etc. The housings 77 and 78 are locked to allow transmission of the power.
[0049]
  The inner housing 77, the outer housing 78, and the engagement / disengagement means 79 constituting the one-way clutch 76 are located at the same position in the axial direction of the intermediate shaft 68. The other output gear 74 is arranged side by side on the same axis as the inner housing 77 and is integrally formed with each other. The output gear 72 is integrally formed on the outer peripheral surface of the outer housing 78 outside the engagement / disengagement means 79 in the radial direction, and the output gear 72 is also formed in the outer housing 78 and the engagement / disengagement means 79 of the one-way clutch 76. And the same position in the axial direction.
[0050]
  Of the intermediate shafts 68 and 69 described above, the other intermediate shaft 69 is supported on a free-wheeling interlocking gear set 81 for interlockingly connecting the output gear 72 to the input gear 71 on the axis. The interlocking gear set 81 has a large-diameter gear 82 that meshes with the other input gear 73 and a small-diameter gear 83 that rotates together with the large-diameter gear 82 and meshes with the other output gear 74.
[0051]
  1 and 4, if the other input gear 73 is rotated together with the input gear 71 (arrow D in FIG. 4) by driving the cell motor 58 (arrow C in FIG. 4), the other input gear 73 is interlocked. The gear set 81 is rotated (arrow B in FIG. 4), and the other output gear 74 is rotated accordingly (arrow D in FIG. 4). In this case, the engagement / disengagement means 79 of the one-way clutch 76 locks the inner housing 77 and the outer housing 78 only when power is transmitted from the other output gear 74 to the output gear 72 via the one-way clutch 76. Thus, power is transmitted from the other output gear 74 to the output gear 72.
[0052]
  The power transmitted to the output gear 72 in this way is transmitted to the crankshaft 31 via the reduction gear 47 and reduction gear 46, and the start by cranking is achieved.
[0053]
  According to the above configuration, since the output gear 72 that outputs the starting power in the interlocking unit 59 is directly meshed with the reduction gear 47, the reduction gear 47 and the output gear 72 are connected to the input shaft 44. Compared to the conventional technique in which the reduction gear 47 and the output gear 72 are arranged side by side in the axial direction of the input shaft 44, the input shaft 44 is positioned substantially at the same position in the axial direction. The width of the starting device 27 in the axial direction is compact.
[0054]
  Therefore, in general, in the driving device for traveling 23 mounted on the motorcycle 1, the shaft centers of the crankshaft 31 of the engine 24 and the input shaft 44 of the power transmission device 26 extend in the vehicle width direction. As described above, since the width dimension of the starting device 27 in the axial direction of the input shaft 44 becomes compact, the width dimension of the motorcycle 1 can also be reduced, and the vehicle running performance and handleability as a saddle riding type can be improved. It becomes.
[0055]
  Further, as described above, the interlocking unit 59 includes a pair of intermediate shafts 68 and 69 arranged in parallel with the input shaft 44, and the output gear 72 and the starting drive source are provided on one intermediate shaft 68. An input gear 71 that rotates by inputting the starting power output from 57 is supported, and an interlocking gear set 81 that interlocks and connects the output gear 72 to the input gear 71 is supported on the other intermediate shaft 69. is there.
[0056]
  Therefore, according to the interlocking means 59, the speed reduction ratio can be increased as follows, and the capacity of the starting drive source 57 can be decreased accordingly.
[0057]
  That is, one-stage reduction is performed between the starting drive source 57 and the input gear 71 on the one intermediate shaft 68, and the other input gear 73 on the input gear 71 side on the one intermediate shaft 68 and the other Two-stage reduction between the large-diameter gear 82 of the interlocking gear set 81 on the intermediate shaft 69 and the small-diameter gear 83 of the same interlocking gear set 81 on the other intermediate shaft 69 and the one intermediate shaft 68. Three-stage reduction with the other output gear 74 on the output gear 72 side, and four-stage reduction between the output gear 72 on the one intermediate shaft 68 and the reduction gear 47 on the input shaft 44, Can do.
[0058]
  That is, the interlocking means 59 can only have a pair of intermediate shafts 68 and 69, but can increase the reduction ratio thereof. Thus, the speed reduction ratio of the interlocking means 59 is increased. The capacity of the starting drive source 57 can be reduced.
[0059]
  As described above, if the number of reduction stages in the interlocking means 59 is increased, the number of gears increases, but each of these gears is disposed on a pair of intermediate shafts 68 and 69. Compared with the arrangement on the intermediate shaft, the side view of the interlocking means 59 is restrained from increasing in size, and accordingly, the shape of the starter 27 having the interlocking means 59 as a component is viewed from the side. An increase in size is also suppressed.
[0060]
  Therefore, it is possible to prevent the shape of the motorcycle 1 from the side view from becoming unnecessarily large.
[0061]
  Further, as described above, the one-way clutch 76 is interposed in the power transmission path of the interlocking means 59, and the one-way clutch 76 is fitted on the one intermediate shaft 68, and the inner housing 77 is idled. When the outer housing 78 that is freely fitted and the engagement / disengagement means 79 for engaging / disengaging the two housings 77, 78 are provided, the outer housing 78 is disposed radially outward of the engagement / disengagement means 79. The output gear 72 is integrally formed on the outer peripheral surface. Therefore, the outer housing 78 and the engagement / disengagement means 79 in the one-way clutch 76 and the output gear 72 are located at substantially the same position in the axial direction of the input shaft 44. As a result, the width of the starting device 27 in the axial direction of the input shaft 44 becomes compact.
[0062]
  Therefore, the width dimension of the motorcycle 1 can be reduced as the width dimension of the starting device 27 becomes compact, and the vehicle running performance and handling characteristics as a saddle riding type are further improved.
[0063]
  In the starting device 27, when the kick pedal 64 is to be used as the starting drive source 57 instead of the cell motor 58, the kick shaft 65 is rotatably supported with respect to the transmission case 43 instead of the intermediate shaft 68. The other input gear 73 may be fixed to the kick shaft 65. A drive gear that supports the kick shaft 65 in place of the cell motor 58 and rotates with the kick shaft 65 is provided at the mounting position of the cell motor 58 in the transmission case 43, and the input gear 71 or the like is connected to the drive gear. The input gear 73 may be meshed.
[0064]
  2 and 5, an engine guard 86 is provided to cover and protect the crankcase 30 of the engine 24 from the front lower side. The engine guard 86 is made of FRP, and is detachably fastened to the left and right down tubes 6 and 6 by a pair of left and right fasteners 87 and 87.
[0065]
  The engine guard 86 has a substantially U-shaped front sectional view and is given sufficient strength and rigidity. Inside the engine guard 86, batteries 88 and 88, which are a pair of front and rear electrical components, are provided with cushioning material 89. Is supported through. That is, the internal space of the engine guard 86 is effectively used to store the batteries 88, and the vehicle body is made compact accordingly. Moreover, since each said battery 88 is arrange | positioned between the said right-and-left down tubes 6 and 6, protection of each said battery 88 is made more reliable. Also, drainage and lightening through-holes 90 are formed in each side portion of the engine guard 86 so as to penetrate the inside and outside of the engine guard 86.
[0066]
【The invention's effect】
  The effects of the present invention are as follows.
[0067]
  The invention of claim 1 is provided with a power transmission device for inputting power from the engine and transmitting it to the rear wheel side, and a starting device for starting the engine,
[0068]
  The power transmission device has an input shaft that is rotatable about an axis parallel to the crankshaft of the engine, a reduction gear that rotates together with the crankshaft, and is supported by the input shaft to the reduction gear. A reduction gear that meshes,
[0069]
  In the motorcycle, wherein the starting device includes a starting drive source and gear-type interlocking means for interlockingly connecting the reduction gear to the starting drive source,
[0070]
  An output gear for outputting the starting power in the interlocking means is directly meshed with the reduction gear.
[0071]
  For this reason, the reduction gear and the output gear are located at substantially the same position in the axial direction of the input shaft, and the reduction gear and the output gear are arranged side by side in the axial direction of the input shaft. Compared with the prior art, the width of the starting device in the axial direction of the input shaft is compact.
[0072]
  Therefore, in general, in a traveling drive device mounted on a motorcycle, the respective crankshafts of the engine crankshaft and the input shaft of the power transmission device extend in the vehicle width direction. Since the width dimension of the starting device in the axial direction of the input shaft becomes compact, the width dimension of the motorcycle can also be reduced, and the vehicle running performance and handling performance as a saddle riding type can be improved.
[0073]
  AlsoThe interlocking means includes a pair of intermediate shafts arranged in parallel with the input shaft, and the power for starting output from the output gear and the cell motor that is the starting drive source is provided on one intermediate shaft. An input gear that rotates by input is supported, and an interlocking gear set that interlocks and connects the output gear to the input gear is supported on the other intermediate shaft, and a perpendicular line passing through the axis of the input shaft in a side view of the motorcycle. In the longitudinal direction of the motorcycle, the crankshaft and the reduction gear are arranged in front of the vertical line, the cell motor and the intermediate shafts are arranged behind the vertical line, and The axis of the cell motor is disposed between the shaft centers of these intermediate shafts.
[0074]
  For this reason, according to the said interlocking | linkage means, a reduction gear ratio can be enlarged as follows.
[0075]
  That is, one step reduction between the cell motor and the input gear on the one intermediate shaft, and two step reduction between the input gear side on the one intermediate shaft and the interlocking gear set on the other intermediate shaft. A three-stage reduction between the same interlocking gear set on the other intermediate shaft and the output gear side on the one intermediate shaft, and an output gear on the one intermediate shaft and a reduction gear on the input shaft; In other words, the interlocking means can be provided with a pair of intermediate shafts, while increasing the reduction ratio.
[0076]
  Therefore, the capacity of the cell motor can be reduced by the amount of reduction of the interlocking means.
[0077]
  As described above, if the number of reduction stages in the interlocking unit is increased, the number of gears is increased. However, since these gears are arranged on a pair of intermediate shafts, the gears are disposed on three or more intermediate shafts. Compared with the arrangement, the side view of the interlocking unit is prevented from increasing in shape, and accordingly, the starter device having the interlocking unit as a component is also suppressed from increasing in side view. .
[0078]
  Therefore, it is prevented that the shape of the motorcycle viewed from the side is unnecessarily large.
[0079]
  Claim2The invention includes an inner housing in which a one-way clutch is interposed in a power transmission path of the interlocking means, and the one-way clutch is externally fitted to the one intermediate shaft, and an outer housing that is freely fitted to the inner housing. And a motorcycle equipped with an engagement / disengagement means for engaging / disengaging these two housings,
[0080]
  The output gear is integrally formed on the outer peripheral surface of the outer housing outside the engaging / disengaging means in the radial direction.
[0081]
  For this reason, the outer housing and engagement / disengagement means in the one-way clutch and the output gear are located at substantially the same position in the axial direction of the input shaft, and the width dimension of the starting device in the axial direction of the input shaft is It becomes compact.
[0082]
  Therefore, as explained in the invention of claim 1, as the width of the starter is reduced, the width of the motorcycle can be reduced, and the vehicle running performance and handleability as a saddle riding type are further improved.
[0083]
  In addition, as described above, since the output gear is integrally formed with the outer housing of the one-way clutch, there is an advantage that the number of parts of the starting device is reduced, and thus the configuration of the starting device is simplified.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along line 1-1 in FIG.
Fig. 2 is a partial side view of the motorcycle.
FIG. 3 is a rear view of the driving device for traveling.
FIG. 4 is a partially enlarged view of FIG. 2;
FIG. 5 is a view taken in the direction of arrows 5-5 in FIG. 2;
[Explanation of symbols]
  1 Motorcycle
  15 Rear wheel
  23 Driving device for traveling
  24 engine
  26 Power transmission device
  27 Starter
  31 Crankshaft
  44 Input shaft
  46 Reduced gear
  47 Reduction gear
  48 clutch
  57 Start drive source
  58 cell motor
  59 Interlocking means
  68, 69 Intermediate shaft
  71 Input gear
  72 Output gear
  73 Other input gears
  74 Other output gears
  76 one-way clutch
  77 Inner housing
  78 Outer housing
  79 Disengagement means
  81 Interlocking gear set
  82 diameter large gear
  83 small gear

Claims (2)

A power transmission device for inputting power from the engine and transmitting it to the rear wheel side, and a starter for starting the engine;
The power transmission device has an input shaft that is rotatable about an axis parallel to the crankshaft of the engine, a reduction gear that rotates together with the crankshaft, and is supported by the input shaft to the reduction gear. A reduction gear that meshes,
In the motorcycle, wherein the starting device includes a starting drive source and gear-type interlocking means for interlockingly connecting the reduction gear to the starting drive source,
The output gear that outputs the starting power in the interlocking means is directly meshed with the reduction gear ,
The upper Symbol interlocking means comprises a pair of intermediate shaft which is arranged parallel to the input shaft, and one of the above intermediate shaft output gear, power for starting to be outputted from the starter motor which is a drive source for the start-up An input gear that rotates by being input is supported, an interlocking gear set that interlocks and connects the output gear to the input gear is supported on the other intermediate shaft, and a perpendicular line that passes through the axis of the input shaft in a side view of the motorcycle. In the longitudinal direction of the motorcycle, the crankshaft and the reduction gear are arranged in front of the vertical line, the cell motor and the intermediate shafts are arranged behind the vertical line, and traveling drive device of automatic motorcycle placing the axis of the starter motor between each axis of these intermediate shafts. A one-way clutch is interposed in the power transmission path of the interlocking means. In a motorcycle including an engagement / disengagement means for engaging / disengaging the housing,
The motorcycle driving device according to claim 1, wherein the output gear is integrally formed on an outer peripheral surface of the outer housing outside the engagement / disengagement means in the radial direction.

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