CN103403405B

CN103403405B - The variable-speed motor of motorcycle

Info

Publication number: CN103403405B
Application number: CN201280011179.XA
Authority: CN
Inventors: 益田大治
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2011-03-01
Filing date: 2012-02-29
Publication date: 2016-09-14
Anticipated expiration: 2032-02-29
Also published as: JPWO2012118120A1; CN103403405A; WO2012118120A1; JP5831538B2

Abstract

The variable-speed motor of a kind of motorcycle, this variable-speed motor has: power shaft, and it is for transmitting the power from bent axle；Output shaft；Multiple sets of teeth wheel is right, and its gear ratio is the most different, is provided with the gear rotated integrally with power shaft and engages with gear and gear rotatable on output shaft；Multiple dog-clutches, it makes multiple sets of teeth wheel that the gear in each group and axle are in on-off state, to reach rotatableization or rotating integrally；Multiple shifting forks (71), it carries out power transmission intermittently to each in multiple dog-clutches；And shifting cam, it makes multiple shifting fork move, can carry out selective power transmission to a certain group of multiple sets of teeth wheel centering.

Description

The variable-speed motor of motorcycle

Technical field

The present invention relates to the variable-speed motor of a kind of motorcycle.

Background technology

Variable-speed motor (so-called actuating device) in vehicle, is to transmit between the output shafts such as electromotor prime movers and axletree Power, the power rotating speed transmitted, moment of torsion etc. are converted.As the manual drive actually serving as motorcycle Most of variable-speed motors, it is known to such as dog-clutch formula (also referred to as " the most engagement type ") manual drive.

Such conventional variable-speed motor possesses: receives the power shaft of the power from such as engine crankshaft, pass through Such as drive chain impart power to axletree output shaft and have the gear of power shaft side and the gear of output shaft side and Multiple gear mesh that gear ratio is the most different.

Gear mesh has following two group gear mesh: one group of gear mesh has the movable tooth being integrally rotatably combined with power shaft Take turns and can engage all the time and the chimeric gear of activity rotatable on output shaft by moving gear with this；Another group gear mesh and its On the contrary, i.e. there is activity rotatable on power shaft and be fitted together to gear and gear chimeric with this activity engages and all the time with defeated What shaft integrally rotatably combined can moving gear.Can utilize to the extension of the rotation axis direction of power shaft or output shaft by moving gear Groove (spline) and while rotating integrally with axle, can slide to rotation axis direction.

It addition, variable-speed motor has: multiple dog-clutches, the plurality of dog-clutch makes movable embedding for often organizing gear mesh Close gear disconnect with axle or be connected, give rotatableization or rotating integrally；Multiple shifting forks, the plurality of shifting fork pair Turn off in each dog-clutch or connect；And shifting cam, this shifting cam makes multiple shifting fork move and select One ground makes a certain group of motility transmission in multiple gear mesh.

Can moving gear be so-called power shift gear, form as one with claw type selector.

In the oblique back upper place of power shaft, the shifting cam that both sides are close is set, so that along changing that power shaft or output shaft extend Gear fork does not become undue long.

Variable-speed motor utilizes shifting fork and dog-clutch some movable chimeric gear and axle to be rotated integrally Change, alternatively make multiple gear mesh motility transmit, change gear ratio (referring for example to patent documentation 1).

Additionally, conventional variable-speed motor has the longer connecting rod extended in the side of crankcase to the above-below direction of vehicle (so-called gearshift connecting rod), to be arranged in the state on the oblique back upper place i.e. top of crankcase of power shaft, even from shifting cam Connect gear level and shifting cam (referring for example to patent documentation 2).

Patent documentation 1: Japanese Unexamined Patent Publication 10-77861 publication

Patent documentation 2: Japanese Unexamined Patent Publication 9-123972 publication

Invent problem to be solved

Above-mentioned conventional variable-speed motor, is fitted together to gear due to activity and dog-clutch is dispersed in power shaft and output shaft respectively On, therefore, it is necessary to possess the shifting fork of the dog-clutch extension to power shaft side and to the claw type clutch of output shaft side The shifting fork that device extends.This is accomplished by configuring shifting cam close to power shaft and output shaft both sides, hence it is evident that infringement is changed The configuration degree of freedom of gear cam.

More specifically, in the case of the variable-speed motor described in patent documentation 1, due to triangle configure this three Individual part: the bent axle that is in the forward side of crankcase in the side view of electromotor, the power shaft of the oblique back upper place being in bent axle, And be in the output shaft of the oblique back lower place of power shaft, therefore, in order to make shifting cam close to power shaft and output shaft both sides, and Do not hinder the power transmission of bent axle and power shaft, preferably make shifting cam be positioned at rotation axis by power shaft and output shaft The rear side (in more detail, be the oblique back upper place of power shaft) of plane, configuration degree of freedom is the lowest.

On the other hand, will move by such as driving chain or drive the transmission mechanisms such as belt from output shaft due to electromotor Power is delivered to driving wheel, therefore, in order to not interfere with these transmission mechanisms, needs configuration by engine suspension frame torr on car body Frame.Such as, in the case of the variable-speed motor described in patent documentation 1, bracket be avoid output shaft rear side, prevent with The configuration that transmission mechanism is interfered.

But, when transmission mechanism imparts power to driving wheel, the output shaft of electromotor bears towards rearward stretching Load.Act on the tensile load of this output shaft and have such situation: distance between output shaft and bracket is the longest, and (i.e. the arm of force is more Long), crankcase just produces the biggest bending stress, hinders the smooth action of variable-speed motor., described in patent documentation 1 Variable-speed motor in the case of, a bracket near output shaft because constantly seeking to avoid and transmission mechanism is interfered, and in order to Avoid shifting cam and shifting fork and away from output shaft, encouraged on crankcase because acting on the tensile load of output shaft The bending stress produced, hinders the smooth action of variable-speed motor.

Further it is necessary to make shifting cam close to power shaft and output shaft both sides, this results in shifting cam to be made and vehicle Footrest be significantly distant from the above-below direction of vehicle.Such as, in the case of the variable-speed motor described in patent documentation 2, rub Motorcycle, in order to connect gear level and shifting cam, needs the longer company extended in the side of crankcase to the above-below direction of vehicle Bar (so-called gearshift connecting rod).In order to avoid the foot of jockey and the interference of connecting rod when foot is placed on footrest by jockey, it is somebody's turn to do The direction of the extension of connecting rod and the center of rotation position of gear level just produce restriction.This results in, even if according to the physique of jockey (the especially length of foot) and suitably adjust the position of footrest, also hinder the moving, to gear level of gear level around center of rotation Operability and operation sense produce sense of discomfort.

Summary of the invention

Invent problem to be solved

Therefore, in view of the problem of above-mentioned conventional art, it is an object of the invention to, it is provided that the variable-speed motor of a kind of motorcycle, Its shifting cam is the highest relative to the configuration degree of freedom of power shaft and output shaft.

For solving the means of problem

For achieving the above object, the variable-speed motor of the motorcycle of the present invention has: power shaft, for transmission moving from bent axle Power；Output shaft；Multiple sets of teeth wheel is right, and the gear ratio of this gear mesh is the most different, has only rotated integrally with described power shaft Side's gear and engaging with one gear and the opposing party's gear rotatable on described output shaft；Multiple claw type clutches Device, this dog-clutch only makes described multiple sets of teeth wheel be in the described the opposing party's gear in each group and described output shaft discontinuously State, to reach rotatableization or rotating integrally；Multiple shifting forks, this shifting fork is to the plurality of dog-clutch In each carry out power transmission intermittently；Shifting cam, this shifting cam makes the plurality of shifting fork move, to described A certain group of multiple sets of teeth wheel centering carries out selective power transmission；And fork axle, this fork axle be configured at described power shaft, Described output shaft and the rear of described shifting cam, axle supports the plurality of selector fork, and described power shaft is positioned at described bent axle Oblique back upper place, described shifting cam is positioned at the lower section of described output shaft, described fork axle than clutch mechanism periphery Rear end is located further forward side, and this clutch mechanism is arranged at described power shaft and transmits power from described bent axle to described power shaft, from Described power shaft, described output shaft and described shifting cam is configured successively, by described power shaft, described output shaft and institute under up to State shifting cam and be configured to the rear of described bent axle.

The effect of invention

Use the variable-speed motor of motorcycle of the present invention with These characteristics, can be by shifting cam relative to power shaft and defeated The configuration degree of freedom of shaft is set to the highest.

Accompanying drawing explanation

Can the further clear and definite present invention more detailed from the description of the following embodiment recorded with reference to Figure of description Structure, feature.

Fig. 1 is the left view of the motorcycle of the variable-speed motor of application embodiment of the present invention.

Fig. 2 is the left view of the electromotor of the motorcycle of the variable-speed motor of application embodiment of the present invention.

Fig. 3 is the right view of the electromotor of the motorcycle of the variable-speed motor of application embodiment of the present invention.

Fig. 4 is the right view of the variable-speed motor representing embodiment of the present invention.

Fig. 5 is the sectional view of the variable-speed motor of the motorcycle representing embodiment of the present invention.

Fig. 6 is dog-clutch and the amplification exploded perspective view of gear of the variable-speed motor representing embodiment of the present invention.

Fig. 7 is the axonometric chart of the electromotor of the variable-speed motor representing application embodiment of the present invention.

Fig. 8 is the axonometric chart of the variable-speed motor representing embodiment of the present invention.

Fig. 9 is the left view of the gear level of the motorcycle of the variable-speed motor representing application embodiment of the present invention.

Figure 10 is the sectional view of the gear level of the motorcycle of the variable-speed motor representing application embodiment of the present invention.

Symbol description

1 motorcycle

2 vehicle body frames

5 front-wheels

6 steering mechanism

7 trailing wheels

8 swing arms

10 electromotors

11 head tubes

12 main frames

13 central frames

15 seat rails

16 fuel tanks

17 jockey seats

18 back seats

19 pivots

21 footrests

22 gear levels

23 front forks

25 handles

26 exhaustors

27 mufflers

28 driven sprockets

29 drive chain

30 cases

31 crankcases

32 cylinder block

33 cylinder heads

35 cylinder head covers

36 food trays

37 clutch mechanisms

38 upper crankcases

39 lower crankcases

40,40a, 40b, 40c bracket

41 clutch cases

42 bent axles

43 variable-speed motors

45 speed change rooms

46 power shafts

46a spline

47 output shafts

47a spline

48 gearshifts

49 change speed gear box cases

51 primary drive gear

52 primary driven gears

53 drive sprockets

55 shifting cams

56 fork axles

63 clutch main bodies

65,66 gear

67 gear mesh

69,69a, 69b, 69c dog-clutch

71 shifting forks

73 bearings

75 sliding bearings

76,77 separator

77a spline

78,78a, 78b, 78c claw type selector

79 shifting fork embeded slots

81 protuberances

82 protuberances

85 gearshift linking arms

86 gearshift connecting rods

87 arms

Detailed description of the invention

The embodiment of the variable-speed motor of the motorcycle of the present invention is described referring now to Figure of description.

It addition, in the present embodiment, front and back, up and down, the expression of left and right is to ride in the jockey on motorcycle 1 as base Accurate.

Fig. 1 is the left view of the motorcycle of the variable-speed motor representing application embodiment of the present invention.

In FIG, motorcycle 1 has: vehicle body frame 2, is positioned at the front-wheel 5 in vehicle body frame 2 front, rotated from by front-wheel 5 Such as ground axle suspension steering mechanism 6 on vehicle body frame 2, it is positioned at the trailing wheel 7 at vehicle body frame 2 rear, prolongs to vehicle body frame 2 rear Stretch and trailing wheel 7 axle be supported to rotatable swing arm 8 and be positioned at the electromotor as internal combustion engine of vehicle central bottom 10。

Vehicle body frame 2 is such as double-tube type, has: pair of right and left main frame 12, and this pair of right and left main frame 12 is being positioned at The dead astern of the head tube 11 of front upper end expands in a pair in the lateral direction and obliquely downward extends the most backward；Left and right one To central frame 13, this pair of right and left central frame 13 is connected with the rearward end of main frame 12 and lower section extends generally upwards；With And pair of right and left seat rail 15, this pair of right and left seat rail 15 rearward extends from the rear upper end of central frame 13.

Main frame 12 doubles as fuel tank track, is pointed to the fuel tank 16 above it and supports, and by electromotor 10 It is suspended in the lower section of fuel tank 16.Seat rail 15 is pointed to the jockey seat 17 of first half above it and above latter half of Back seat 18 support.It addition, main frame 12 has: be erected at the substantial middle bottom of left and right central frame 13, by swing arm 8 Axle is supported to the pivot 19 vertically swung freely；The substantial middle rear portion and the jockey that are positioned at left and right central frame 13 can be put Put a pair footrest 21 of foot；And the gear level 22 from footrest 21 extension of vehicle left side.

Steering mechanism 6 has: built with suspension fork mechanism (diagram omit) and front-wheel 5 is supported to the left and right one rotated freely To front fork 23 and the handle that is positioned at front fork 23 upper end.Jockey utilizes handle 25 and left and right steering front-wheel 5.

Electromotor 10 is connected with the exhaustor 26 to rear view of vehicle extension, by the waste gas discharge of electromotor 10.Exhaustor 26 Rear end be connected with muffler 27.

Trailing wheel 7 has driven sprocket 28.

It addition, motorcycle 1 has: be winded on driven sprocket 28, the driving of power will be transmitted from electromotor 10 rear wheel 7 Chain 29；And cover fusiform case 30 of front part of vehicle.Case 30 reduces the air drag in travelling, and protection jockey is not By travelling blast.

Then, the electromotor 10 of present embodiment is described in detail.

Fig. 2, Fig. 3 are left view and the right views of the electromotor of the variable-speed motor representing application embodiment of the present invention.

As shown in Figures 2 and 3, the electromotor 10 of present embodiment is four stroke multi-cylinder electromotors, and e.g. four strokes are straight Row four cylinder engine, has crankcase 31, cylinder block 32, cylinder head 33, cylinder head cover 35, food tray 36 and clutch mechanism 37.

Crankcase 31 can be divided into two up and down by divisional plane 31a, has the upper crankcase 38 as first case halfbody and makees It it is the lower crankcase 39 of second case halfbody.It addition, crankcase 31 has the multiple torr being suspended on vehicle body frame 2 by electromotor 10 Frame 40.

As illustrated, cylinder block 32 is positioned at the top of upper crankcase 38, compares and uprightly leans forward slightly.Cylinder block 32 has Piston (diagram is omitted) is accommodated the cylinder chamber (diagram is omitted) slid freely to roughly vertical direction.

The top of cylinder chamber is sealed by cylinder head 33, is separated out combustor (diagram is omitted) between piston.Piston profit Move back and forth with the burning of the gaseous mixture of combustor periodically generation.

Food tray 36 is arranged on the bottom of lower crankcase 39.

Clutch mechanism 37 is dry clutch.Clutch case 41 is assembled on the sidewall of crankcase 31, by clutch Mechanism 37 local complexity.

Fig. 4 is the right view of the variable-speed motor representing embodiments of the present invention.It addition, Fig. 4 is to take off from electromotor 10 The diagram represented after clutch case 41 and clutch mechanism 37.

From shown in Fig. 2 to Fig. 4, there is in the crankcase 31 of electromotor 10 bent axle 42 and variable-speed motor 43.

First, bent axle 42 is in substantial middle in the side view of electromotor 10, is in the lower section of cylinder block 32, in more detail Ground is said near the position that the divisional plane 31a being in crankcase 31 first intersects with the prolongation of cylinder centerline.The rotary shaft of bent axle 42 Line is towards the width of electromotor 10.

Then, variable-speed motor 43 is modular variable-speed motor, coordinates relative to upper crankcase 38 and lower crankcase 39 and at bent axle The inside and outside integrative ground of the change speed gear box 45 being separated out in case 31 is detachable.Variable-speed motor 43 has power shaft 46, output shaft 47, gearshift Mechanism 48 and respectively power shaft 46 and output shaft 47 axle are supported to rotatable change speed gear box case 49.

Bent axle 42, power shaft 46 and output shaft 47 have rotation axis parallel to each other.Bent axle 42 will pass to power shaft 46 The primary drive gear 51 of graduating power is kept into and rotates integrally.

Power shaft 46 is positioned at the oblique back upper place of bent axle 42 on divisional plane 31a, is connected with clutch mechanism 37.Power shaft 46 Primary driven gear 52 axle engaged with primary drive gear 51 is supported to rotatable.

Output shaft 47 is positioned at the lower section (the slightly tiltedly back lower place) of power shaft 46.Output shaft 47 is projected into the left side of crankcase 31 Be combined outside side and with drive sprocket 53.Drive sprocket 53 is hung around on driving chain 29 and imparts power to trailing wheel 7.

Gearshift 48 is positioned at the lower section of output shaft 47.Gearshift 48 has shifting cam 55 and fork axle 56.Gearshift Cam 55 is in the lower section of output shaft 47.Fork axle 56 is in the rear of shifting cam 55, is in clutch mechanism 37 periphery The front side of rearmost end.

Power shaft 46, output shaft 47 and shifting cam 55 are from starting above successively and substantially one linearly arranging, each Rotation axis be in substantially in approximately the same plane.

Fig. 5 is the sectional view of the variable-speed motor of the motorcycle representing the embodiment of the present invention after cutting off with V-V line in Fig. 3.

As it is shown in figure 5, the clutch mechanism 37 of the electromotor 10 of present embodiment, have and primary driven gear 52 is kept The clutch main body 63 of integral rotation.Clutch mechanism 37 makes primary driven gear 52 disconnect with power shaft 46 or be connected, and gives With rotatableization or rotating integrally, carry out cut-out or the transmission of power between bent axle 42 and power shaft 46.

Variable-speed motor 43 is so-called dog-clutch formula manual drive.Variable-speed motor 43 has: dynamic from bent axle 42 transmission The power shaft 46 as the first power transmission shaft of power；Output shaft 47 as the second power transmission shaft；Gear ratio is each Different multiple sets of teeth is taken turns 67, this gear mesh 67 have be combined into one with power shaft 46 rotate gear 65 (side's gear), And engage with gear 65 and the rotatably movable gear 66 (the opposing party's gear) being entrenched on output shaft 47；For multiple sets of teeth Take turns and make gear 66 disconnect with output shaft 47 each group in 67 or be connected and give rotatableization or rotating integrally is many Individual dog-clutch 69；The multiple shifting forks 71 each in multiple dog-clutches 69 turned off or connect； And coordinate and power shaft 46 and output shaft 47 carried out the change speed gear box case 49 of axle supporting with crankcase 31.

The one end (being right part here) of power shaft 46 keeps primary driven gear 52 and clutch mechanism 37.Power shaft The peripheral part of 46 has spline 46a.

Output shaft 47 obtains the power of electromotor 10 from power shaft 46 and exports to variable-speed motor 43.The periphery of output shaft 47 Portion has spline 47a.It addition, be there is not spline 47a in movable for gear 66 chimeric local.

Gear 65 is to be integrally bonded the fixed gear of rotation with power shaft 46.Multiple gears 65 are respectively applied to jackshaft Low-speed gear 65a, jackshaft the second gear 65b, jackshaft the 3rd gear 65c, jackshaft the 4th gear 65d, jackshaft are at a high speed Gear 65e and jackshaft overdrive gear 65f (hereinafter referred merely to as " gear 65a ", " gear 65b ", " gear 65c ", " gear 65d ", " gear 65e " and " gear 65f ").

Gear 66 is rotatably chimeric activity movable with output shaft 47 chimeric (sliding embedding) gear.Gear 66 is applied to Drive shaft low-speed gear 66a, drive shaft the second gear 66b, drive shaft the 3rd gear 66c, drive shaft the 4th gear 66d, driving Axle high gear 66e and drive shaft overdrive gear 66f (hereinafter referred merely to as " gear 66a ", " gear 66b ", " gear 66c ", " tooth Wheel 66d ", " gear 66e " and " gear 66f ").

Gear 65,66 is between the pair of right and left bearing 73 that power shaft 46 and output shaft 47 carry out axle supporting respectively.

Variable-speed motor 43, be utilize all the time meshed gears 65a and gear 66a, gear 65b and gear 66b, gear 65c and Gear 66c, gear 65d and gear 66d, gear 65e and gear 66e and gear 65f and gear 66f to and 1 speed can be carried out to 6 Six grades of speed changing type variable-speed motors of the speed change of speed.

Below, gear 65,66 is described in detail in detail.

Gear 65b is in the rightmost side and the gear with power shaft 46 one.Gear 65a is in the leftmost side, at gear 65c In second position started from left side, gear 65d is in second position started from right side, and gear 65e is in from left side The 3rd position started, gear 65f is in the 3rd position started from right side.Gear 65b, 65c, 65d, 65e, 65f profit Be combined into one with power shaft 46 rotation with the spline 46a of power shaft 46.

On the other hand, gear 66a is in the leftmost side, gear 66b is in the rightmost side, and gear 66c is in and starts from left side Second position, gear 66d is in second position started from right side, and gear 66e is in the 3rd position started from left side Putting, gear 66f is in the 3rd position started from right side.Rotatable for gear 66 earth's axis is bearing in output by sliding bearing 75 On axle 47.

It addition, variable-speed motor 43 has the rotation axis side being clipped between adjacent gear mesh 67 and to the plurality of gear mesh To the separator 76,77 of sleeve-shaped that limited of movement.

Separator 76 is clipped between each gear 65, retrains the distance of leaving between adjacent gear 65.Separator 76 There is the through hole inserting power shaft 46, embed spline 46a and rotate integrally with power shaft 46.

Separator 77 is clipped between each gear 66, retrains the distance of leaving between adjacent gear 66.Separator 77 There is the through hole inserting output shaft 47, embed spline 47a and rotate integrally with output shaft 47.It addition, separator 77 is inside and outside Perimembranous has spline 77a.

Dog-clutch 69 is applied to make gear 66a or gear 66c disconnect with output shaft 47 or be connected and rotated from As changed or the dog-clutch 69a of rotating integrally, making gear 66b or gear 66d disconnect with output shaft 47 or be connected and give The dog-clutch 69b of rotatableization or rotating integrally, gear 66e or gear 66f is made to disconnect with output shaft 47 or be connected And give the dog-clutch 69c of rotatableization or rotating integrally.It addition, dog-clutch 69 have be positioned at the most adjacent Gear 66 between claw type selector 78.Claw type selector 78 is chimeric with spline 77a and with can be to the rotation axis of output shaft 47 The state slided in direction is combined with separator 77.It addition, the shifting fork that claw type selector 78 has insertion shifting fork 71 is embedding Close groove 79.

Claw type selector 78a that claw type selector 78 is applied between gear 66a and gear 66c, it is positioned at gear 66b And the claw type selector 78b between gear 66d and the claw type selector 78c between gear 66e and gear 66f.

Fig. 6 is the exploded perspective that the claw type selector of the variable-speed motor of embodiment of the present invention and gear give enlarged representation Figure.

As shown in Figure 6, dog-clutch 69 have can be combined with each other with claw type selector 78 and gear 66, depart from multiple Protuberance 81 and recess 82.Protuberance 81 and recess 82 are positioned at the most at equal intervals in the respective circumference of claw type selector 78 and gear 66 Position.

It addition, in figure 6, the tooth representing gear 66 is omitted.

Fig. 7 is the axonometric chart of the electromotor of the variable-speed motor representing application embodiment of the present invention, is to be taken out by variable-speed motor 43 The diagram represented after outer to speed change room 45.

Fig. 8 is the axonometric chart of the variable-speed motor representing embodiment of the present invention, represents after being taken off by change speed gear box case 49 The diagram of variable-speed motor 43.It addition, Fig. 7 and Fig. 8 omits the gear representing gear.

As shown in Figures 7 and 8, the gearshift 48 of the variable-speed motor 43 of present embodiment has: multiple shifting forks 71；Will Shifting fork 71 axle is supported to direction that be substantially parallel the fork axle 56 slid freely to the rotation axis with output shaft 47；Make many Individual selector fork 71 moves and alternatively makes the multiple sets of teeth wheel shifting cam 55 to a certain group of transmission power in 67.

Shifting fork 71 compared to the envelope down through gear mesh 67 rearmost end slightly into front side, and from fork Axle 56 extends to claw type selector 78.

The periphery of shifting cam 55 has the gearshift groove (diagram omit) paired with each shifting fork 71.Shifting cam 55 profit Rotating with the operation of gear level 22, shifting fork 71 slides, alternatively by dog-clutch 69 and gear along gearshift groove 66 connect and can carry out the power transmission of power shaft 46 and output shaft 47.

On the other hand, crankcase 31 has: is positioned at the bracket 40a of variable-speed motor 43 left back, is positioned at variable-speed motor 43 right back Bracket 40b and be positioned at the bracket 40c below variable-speed motor 43.

Bracket 40a, 40b and bracket 40c coordinate with other bracket 40 of crankcase 31 and electromotor 10 are suspended in car body On framework 2.Especially, bracket 40a is in the position nearest with drive sprocket 53, to from driving chain 29 to act on output shaft 47 The counter-force of tensile load give the support of strength.

As shown in Fig. 7 and Fig. 3, bracket 40a is in and drives chain 29 and the nearest position of output shaft 47.Variable-speed motor 43, by making gearshift 48 be positioned at the lower section of output shaft 47, and do not configure any axle etc. at the rear of output shaft 47, thus The wall that can make crankcase 31 is tried one's best close to output shaft 47, makes bracket 40a close to driving chain 29 and output shaft 47.

Fig. 9 is the left view of the gear level of the motorcycle of the variable-speed motor representing application embodiment of the present invention, and Figure 10 is table Show the sectional view of the gear level of the motorcycle of the application variable-speed motor after being cut off by the X-X line of Fig. 9.

As shown in FIG. 9 and 10, the gear level 22 of the motorcycle 1 of present embodiment has the rotation coaxial with footrest 21 Axis, has the brachium that the tiptoe T of available jockey carries out swinging.

On the other hand, the shifting cam 55 of variable-speed motor 43 has gearshift linking arm 85.Owing to shifting cam 55 is positioned at speed change The foot of machine 43, thus gearshift linking arm 85 in electromotor 10 entirety from the point of view of be also at low-down position.

Further, gear level 22 and gearshift linking arm 85, utilize the lower section being positioned at footrest 21 the gearshift connecting rod extended 86 and connect.Constitute together with the arm 87 that gearshift connecting rod 86 hangs down with the rotating base from gearshift linking arm 85 and gear level 22 Linkage, is delivered to the swing of gear level 22 shifting cam 55 and makes shifting cam 55 rotate, promoting variable-speed motor 43 speed change.

When the position of footrest 21 being carried out variations or modifications at the physique according to jockey, gear level 22 and footrest 21 Moving together, the distance change between gear level 22 and gearshift linking arm 85 is that the length to gearshift connecting rod 86 could be adjusted to Reply.Even if owing to the rotation axis of gear level 22 moves, gearshift connecting rod 86 also must be positioned at the lower section of the foot of jockey, therefore This reply is possibly realized, and this reply is because considering the connecting rod 86 interference with the foot of jockey of shifting gears.

It addition, variable-speed motor 43, can suitably replace power shaft 46 and output shaft 47, gear 65 and the combination of gear 66.Specifically For, variable-speed motor 43 also can have the most different multiple sets of teeth of gear ratio takes turns 67, and this gear mesh 67 has and output shaft Gear 65 (side's gear) that 47 rotate integrally and engage with gear 65 and gear 66 rotatable on power shaft 46 is (another One side's gear).In this case, output shaft 47 is the first power transmission shaft, and power shaft 46 is the second power transmission shaft.

Use the variable-speed motor 43 of the motorcycle 1 of above-mentioned present embodiment, there is following such effect and advantage.

That is, by activity is fitted together to gear i.e. gear 66 and the whole centralized configuration of dog-clutch 69 output shaft 47 (or Power shaft 46) on, it is thus possible to configure whole shifting fork 71 peripherally near output shaft 47 (or power shaft 46).This can be by not only Including shifting fork 71 and include that the gearshift 48 of shifting cam 55 is integrally provided in output shaft 47 (or power shaft 46) Periphery, makes the tremendous raising of configuration degree of freedom of gearshift 48.Specifically, variable-speed motor 43 can avoided and bent axle 42 and defeated Enter in the range of axle 46 (or output shaft 47) interference, gearshift 48 can be arranged in around output shaft 47 (or power shaft 46) Arbitrarily position is gone up mutually.

It addition, the variable-speed motor 43 of the motorcycle 1 of present embodiment, by improving the configuration degree of freedom of gearshift 48, from And gearshift 48 just can be arranged in the lower section etc. of output shaft 47, and wall and the bracket of the rear side of crankcase 31 can be made 40a configures close to output shaft 47 ground as far as possible.Thus, variable-speed motor 43 can will transmit machine with from driving chain 29 or driving belt etc. Structure acts on the corresponding arm of force of the tensile load of output shaft 47 to be shortened as far as possible, and suppresses the bending produced on crankcase 31 should Power, it can be ensured that the smooth action of variable-speed motor 43.

Additionally, the variable-speed motor 43 of the motorcycle 1 of present embodiment, by improving the configuration degree of freedom of gearshift 48, from And gearshift 48 can be arranged in the lower section etc. of output shaft 47, gearshift connecting rod 86 is arranged in the lower side of footrest 21, The probability that the foot of jockey is interfered can be got rid of with gearshift connecting rod 86.Footrest 21 and gear level 22 can be configured without By avoiding the foot of jockey to interfere fettering of this restriction condition with gearshift connecting rod 86.Specifically, variable-speed motor 43 is in basis The physique of jockey and time the position of footrest 21 is carried out variations or modifications, gear level 22 can be moved together with footrest 21, Improve operability and the operation sense of gear level.

Further, the variable-speed motor 43 of the motorcycle 1 of present embodiment, by configuring power shaft 46, output shaft successively from top 47 and gearshift 48, thus length before and after electromotor 10 can be shortened, the beneficially miniaturization of motorcycle 1 entirety.

Further, the variable-speed motor 43 of the motorcycle 1 of present embodiment, by configuring power shaft 46, output shaft successively from top 47 and gearshift 48, thus the lubricating oil dripped in change speed gear box 45 can be securely fed power shaft 46, output shaft 47 It is lubricated with gearshift 48.

But, conventional variable-speed motor, can moving gear and claw type selector shape all-in-one-piece what is called gearshift tooth owing to having Wheel, therefore, when the gear mesh transmitting power is changed (i.e. speed change), makes power shift gear slide to rotation axis direction, By the activity chimeric gear adjacent with this power shift gear with carry out rotated integrally of axle that rotate.Due to can moving gear with Movable chimeric gear engages all the time, and therefore, the power required for the slip of this power shift gear becomes the rotary load of shifting cam, Become the load of the operating physical force of gear level.

Conventional variable-speed motor, owing to utilizing shifting fork that power shift gear carries out the location in rotation axis direction, therefore, when Power shaft or output shaft are applied bigger power etc. and during to gearshift gearing load, shifting fork and power shift gear sometimes Slip surface layer produce abrasion.

But, the variable-speed motor 43 of the motorcycle 1 of present embodiment, due to activity is fitted together to gear i.e. gear 66 and claw type from The whole centralized configuration of clutch 69 is on output shaft 47 (or power shaft 46), and therefore, claw type selector 78 each becomes with gear 65,66 For split part, the engagement of gear mesh 67 do not interfere with the slip of claw type selector 78, the rotary load of shifting cam 55 and The load of the operating physical force of gear level 22.

It addition, the variable-speed motor 43 of the motorcycle 1 of present embodiment, by activity is fitted together to gear i.e. gear 66 and claw type from Claw type selector 78 and gear 65,66, on output shaft 47 (or power shaft 46), are each made by the whole centralized configuration of clutch 69 Split part, thus just can carry out speed change without making gear 65,66 slide.That is, shifting fork 71 can be to claw type selector 78 Carry out positioning without from gear 65,66 side by load, compared to conventional variable-speed motor, be applied to shifting fork 71 and claw type Power on the sliding surface of selector 78 reduces, suppression shifting fork 71 and the abrasion of claw type selector 78.

Therefore, use the variable-speed motor 43 of the motorcycle 1 of present embodiment, can carry relative to power shaft 46 and output shaft 47 The configuration degree of freedom of high shifting cam 55.

It addition, the invention is not restricted to the embodiments described, in the range of the present invention is claimed, other change and repairing Positive example is also contained in the scope of the present invention.

Claims

1. the variable-speed motor of a motorcycle, it is characterised in that have:

Power shaft, for transmitting the power from bent axle；

Output shaft；

Multiple sets of teeth wheel right, the gear ratio of this gear mesh is the most different, have only rotate integrally with described power shaft side's gear, And engage and the opposing party's gear rotatable on described output shaft with one gear；

Multiple dog-clutches, this dog-clutch only makes described multiple sets of teeth take turns the described the opposing party's gear in each group and institute State output shaft and be in on-off state, to reach rotatableization or rotating integrally；

Multiple shifting forks, this shifting fork carries out power transmission intermittently to each in the plurality of dog-clutch；

Shifting cam, this shifting cam makes the plurality of shifting fork move, and carries out a certain group of described multiple sets of teeth wheel centering Selective power transmission；And

Fork axle, this fork axle is configured at described power shaft, described output shaft and the rear of described shifting cam, and axle supporting is described Multiple selector forks,

Described power shaft is positioned at the oblique back upper place of described bent axle,

Described shifting cam is positioned at the lower section of described output shaft,

Described fork axle is located further forward side than the rearmost end of the periphery of clutch mechanism, and this clutch mechanism is arranged at described power shaft And transmit power from described bent axle to described power shaft,

Configure described power shaft, described output shaft and described shifting cam the most successively, by described power shaft, described output Axle and described shifting cam are configured to the rear of described bent axle.

2. the variable-speed motor of motorcycle as claimed in claim 1, it is characterised in that also have be clipped in adjacent described gear mesh it Between and to described multiple sets of teeth wheel to the separator that limits of the movement in rotation axis direction.

3. the variable-speed motor of motorcycle as claimed in claim 1 or 2, it is characterised in that described power shaft, described output shaft and institute State the rotation axis of shifting cam to be in and substantially in approximately the same plane and arrange in the vertical direction.