CN101871525A

CN101871525A - Motorcycle transmission

Info

Publication number: CN101871525A
Application number: CN200910103654A
Authority: CN
Inventors: 陈朝晖; 黄建彬; 凤斌; 蔡以涛
Original assignee: China Jialing Industry Co Ltd
Current assignee: China Jialing Industry Co Ltd
Priority date: 2009-04-21
Filing date: 2009-04-21
Publication date: 2010-10-27

Abstract

The invention relates to a motorcycle transmission. The motorcycle transmission consists of an input shaft, an intermediate shaft, an output shaft, a gear pair and an operating mechanism. The operation mechanism of the transmission is arranged outside a gearbox casing. The other end of a variable speed drum is provided with a shift locking mechanism. Compared with the conventional motorcycle transmission, the motorcycle transmission of the invention simplifies the internal structure and reduces the production cost.

Description

A kind of motorcycle gear box

Technical field

The present invention relates to a kind of speed changer, particularly relate to a kind of motorcycle gear box.

Background technique

At present, the Effector great majority of known motorcycle gear box all are the variable-speed shaft rotations that drives speed changer inside by gear shift pedal or shift, again by extension spring, the motion of gear arm etc. realizes gearshift, but this shift operating device number of parts is more, make mission case internal structure complexity, corresponding cost also increases much, is unfavorable for that the marketization competes.

Summary of the invention

In order to overcome present speed changer structure complexity, the higher deficiency of cost, the invention provides a kind of speed changer, this speed changer adopts a kind of simple external shift control mode, makes whole speed changer internal structure simplify, and cost reduces.

The technical solution adopted for the present invention to solve the technical problems is: this motorcycle gear box, thereby the gear pair and axial the moving of actuation gear that comprise casing, input shaft, jack shaft, output shaft and adorn are respectively thereon realized the speed-changing drum and the shift fork of speed change, its key is: the operating mechanism of this speed changer is arranged in the gearbox casing outside, and be connected with speed-changing drum by rotating disk, be provided with the gear lockable mechanism at the speed-changing drum the other end.

Described operating mechanism comprises operating handle, rotating disk and drag-line, and operating handle is connected with rotating disk A, and rotating disk A, rotating disk B are connected with drag-line B by drag-line A, and speed-changing drum is rotated by two drag-line pulling dial rotation.

Described gear lockable mechanism comprises dials plate, positioning plate combination and Returnning spring; Dial the other end that plate is contained in speed-changing drum, and rotate with speed-changing drum; Roller in the positioning plate combination moves along the external frame of dialling plate, and under the effect of Returnning spring, compress the external frame of dialling plate all the time, when the roller in the positioning plate combination is pressed in group plate groove, just change to a certain gear, continue the pulling shift, as changing to another gear again with upper type.

According to the above-mentioned motorcycle gear box that assembles, its working procedure such as following:

The power of motor passes to transmission input shaft by medium tache, passes to jack shaft by driving gear on the input shaft again, is delivered to output shaft through countershaft-gear again.Be installed with on the inner input shaft of speed changer with input shaft by spline package together can be along axially movable gear of input shaft and the empty gear that is enclosed within on the input shaft, also be installed with on the jack shaft with jack shaft by spline package together can be along axially movable gear of jack shaft and the empty gear that is enclosed within on the jack shaft, gear on the output shaft and the fixed gear on the jack shaft often mesh; One end of speed-changing drum is installed with round turntable, rotating disk spurs by drag-line, during neutral gear, movably free gear engagement on gear and the jack shaft on the input shaft, removable gear engagement on free gear and the jack shaft on the input shaft, removable gear rotates with input shaft on the input shaft at this moment, but jack shaft does not still rotate, the unpowered output of whole speed changer, in the time will hanging up a certain gear, the pulling shift makes cable pull, drag-line just hauls rotating disk and speed-changing drum rotation, thereby the shift fork that the upper end pin is inserted in the speed-changing drum guiding groove moves axially a distance along declutch shift shaft, the shift fork lower end is connected with removable gear, thereby make removable gear vertically the free gear on mobile phase same distance and the same axle link together by ratchet, with this locking position, just realize gear-change operation at the other end gear lockable mechanism of speed-changing drum.

The invention has the beneficial effects as follows, simplify the speed changer internal structure, reduce manufacture cost.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the cut-away view of motorcycle gear box of the present invention;

Fig. 2 is the shape assumption diagram of motorcycle gear box of the present invention;

Fig. 3 is the left view of Fig. 2.

Among the figure: 1. chain, 2. high-grade driving gear, 3. shift fork 1,4. low-grade driving gear, 5. input shaft, 6. driving switch, 7. group plate, 8. speed-changing drum, 9. shift fork 2,10. helical gear, 11. low-grade driven gears, 12. output shafts, 13. helical teeth, 14. high-grade driven gears, 15. sprocket wheels, 16. declutch shift shafts, 17. jack shaft, 18. Returnning springs, the combination of 19. positioning plates, 20. drag-line A, 21. drag-line B, 22. rotating disk A, 23. rotating disk B.

Embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention is a kind of motor vehicular transmission, input shaft 5 connects with motor, high-grade driving gear 2 skies are enclosed within on the input shaft, low-grade driving gear 4 connects by spline and input shaft 5, and can on input shaft, move axially, high-grade driven gear 14 connects by spline and jack shaft 17, and can move axially on jack shaft 17; Low-grade driven gear 11 skies are enclosed within on the jack shaft 17, helical gear 10 is processed together with jack shaft, and with output shaft 12 on helical gear 13 engagement, helical gear 13 connects and can not endwisely slip with the output shaft spline, sprocket wheel 15 skies are enclosed within on the jack shaft, and be connected with fixed chain wheels on the input shaft 5 by chain 1, declutch shift shaft 16 is installed on the casing, the big end of shift fork 3 and shift fork 9 inserts respectively in the circular groove of low-grade driving gear 4 and high-grade driven gear 14, the upper end pin inserts the guiding groove of speed-changing drum 8, and can move axially along declutch shift shaft 16.Position shown in Figure 1 is a neutral state, during gear shift, the pulling shift drives rotating disk 22 and turns clockwise, rotating disk 22 rotation post-tensionings strain at rope A (20), 23 rotations of drag-line A (20) pulling rotating disk, thereby make the speed-changing drum rotation, shift fork 3 just moves right along declutch shift shaft, at the other end of speed-changing drum, dials plate 7 and also rotates with speed-changing drum, roller in the positioning plate combination 19 moves along the external frame of dialling plate 7, and under the effect of Returnning spring 18, compressing the external frame of dialling plate 7 all the time, the roller in positioning plate makes up is pressed on when dialling in the plate groove, just change up, continue the pulling shift, as with upper type change down again.Be rotated counterclockwise when promote shift drive rotating disk 22 from high-grade position, rotating disk 22 rotation post-tensionings strain at rope B (21), and 23 rotations of drag-line B (21) pulling rotating disk change to neutral gear again.

Claims

1. motorcycle gear box, thereby the gear pair and axial the moving of actuation gear that comprise casing, input shaft, jack shaft, output shaft and adorn are respectively thereon realized the speed-changing drum and the shift fork of speed change, it is characterized in that: the operating mechanism of this speed changer is arranged in the gearbox casing outside, and be connected with speed-changing drum by rotating disk (23), be provided with the gear lockable mechanism at the speed-changing drum the other end.

2. speed changer according to claim 1, it is characterized in that: described operating mechanism comprises operating handle, rotating disk, drag-line A, drag-line B, operating handle is connected with rotating disk A (22), rotating disk A (22), rotating disk B (23) connect by drag-line A (20), drag-line B (21), and speed-changing drum is rotated by two drag-line pulling dial rotation.

3. speed changer according to claim 1 is characterized in that: described gear lockable mechanism comprises dials plate (7), positioning plate combination (19) and Returnning spring (18); Dial the other end that plate (7) is contained in speed-changing drum (8), and rotate with speed-changing drum; Roller in the positioning plate combination (19) is along the external frame motion of dialling plate (7), and under the effect of Returnning spring (18), compress the external frame of dialling plate (7) all the time, when the roller in the positioning plate combination is pressed in group plate groove, just change to a certain gear, continue the pulling shift, as changing to another gear again with upper type.