CN2563098Y

CN2563098Y - Speed variator for motorcycle

Info

Publication number: CN2563098Y
Application number: CN02222293U
Authority: CN
Inventors: 胡光宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-18
Filing date: 2002-04-18
Publication date: 2003-07-30
Anticipated expiration: 2012-04-18

Abstract

A speed variator for a motorcycle belongs to the technical field of transmission device of a motorcycle. The technical problem which needs to be solved is to provide a variator which can achieve automatic speed variation only by controlling a throttle. The proposal for solving the technical problem is as follows: the speed variator comprises a crankshaft, a spindle, a centrifugal clutch, a low gear driving gear, an overrunning clutch, a high gear driving gear, a high gear driven gear and a friction clutch. A rotor and a clutch of the centrifugal clutch are arranged on the crankshaft, a sleeve of the centrifugal clutch is covered outside the crankshaft, and the low gear driving gear is arranged at a lower segment of the sleeve. An external disk of the overrunning clutch, namely the low gear driven gear, is covered outside the spindle, a central rotor is arranged on the spindle, and a roller is positioned between the rotor and a cam of an inner hole of the external disk. The high gear driving gear is arranged on the crankshaft, the driven gear is arranged on a shell of the friction clutch, a driving friction disk and a driven friction disk are piled inside the shell, the driving friction disk is embedded in the shell, and the driven friction disk is arranged on the spindle, balls and skewed slots are arranged at the bottom of the friction clutch. The utility model is applicable to the motorcycle with simple operation.

Description

The motor bike transmission system

Technical field:

The utility model belongs to motor bike driving device technical field.

Background technology:

Prior art motor bike transmission system is throttle and change gear case, and chaufeur must be handled the throttle regulating control on the other hand, another hand operation selector, and the operative technique complexity is inconvenient again.

Summary of the invention:

Technical matters to be solved is, it is the motor bike transmission system that the mode of engine crankshaft rotating speed can change the main shaft output speed automatically that a kind of throttle of handling of a kind of usefulness is provided.

The technical scheme that solves this technical problem is as follows: the motor bike transmission system comprises bent axle output shaft, main shaft, centrifugal clutch, low gear driving gear, cam type overpass clutch, high speed gear driving gear, high speed gear driven gear and friction disk clutch.Centrifugal clutch comprises sleeve, clutch rotor, clutch dog and retracing spring, the sleeve endoporus divides two sections, the endoporus hypomere is enclosed within the bent axle output shaft and can rotate around the axis outward, clutch rotor is contained in and is positioned at the large diameter epimere of sleeve endoporus on the bent axle output shaft and can rotates with bent axle, clutch dog is contained on the clutch dog axle on the clutch rotor, link to each other with retracing spring between the clutch dog, between clutch rotor and clutch dog and the sleeve endoporus inwall certain interval is arranged, the low gear driving gear is contained in sleeve hypomere outside; Cam type overpass clutch comprises outer dish, center rotor and roller, outer dish can rotate around main shaft on main shaft with the borehole jack of bottom, on the outer dish endoporus several cams are arranged, center rotor is contained in the cam that is positioned at outer dish endoporus on the main shaft, roller the center rotor cylindrical and outside between the cam on the dish, the cylindrical of outer dish has tooth promptly to become the low gear driven gear to be meshed with the low gear driving gear; Friction disk clutch comprises shell, active friction plate, from movable friction plate, recover spring, ball and collar, the shell endoporus divides two sections, the endoporus hypomere is enclosed within outside the main shaft and can rotates around main shaft, on the large diameter endoporus epimere inwall several vertical slots are arranged, active friction plate and be loaded in the shell endoporus epimere from alternate repeatedly the putting of movable friction plate, the circle that is installed on go up most a slice active friction plate blocks, active friction plate is the center has several external tooths on the circular hole cylindrical a disk, can be outside main shaft with its center circle hole sleeve around the main shaft rotation and in the vertical slot on the embedding of the external tooth on its cylindrical shell endoporus outer wall, from movable friction plate is that endoporus has the disk of several inner spline gears can rotate with main shaft the spline on its inner spline gear embedding main shaft, have on the bottom face of the larger diameter internal bore epimere of shell several therefrom mind-sets radially outer in dark outer shallow skewed slot, place in the skewed slot and can change active friction plate and be the ball of friction force size, recover the spring bottom and place on the shell endoporus bottom face its upper end to pass following each layer active friction plate and the hole from movable friction plate withstands on the lower surface of the top a slice active friction plate from the elasticity between the movable friction plate; The high speed gear driving gear is contained on the bent axle output shaft, and the high speed gear driven gear is contained in enclosure and is meshed with the high speed gear driving gear, adorns output gear on the main shaft, and output gear is connected with sprocket wheel with chain.

Transmission system divides that low gear is following, low gear and three sections work of high speed gear.When crankshaft rotating speed when the low gear rotating speed is following, the clutch dog of centrifugal clutch does not combine with sleeve, and friction disk clutch is because ball is in also not combination of relaxation state between inner end, friction lining, bent axle only drives the rotor of centrifugal clutch and drives the idle running of friction disk clutch shell by the high speed gear driving gear, and main shaft is motionless.When crankshaft rotating speed is elevated to a certain rotating speed and is the low gear rotating speed, centrifugal clutch throws away combination because of clutch dog under centrifugal action, thereby bent axle is the outer dish of transmission centrifugal clutch and low gear driving gear driving cam formula overriding clutch, outer dish is made forward rotation, can drive center rotor and main shaft and rotate.When crankshaft rotating speed further is elevated to the high speed gear rotating speed, friction disk clutch combines active friction plate with compressing from movable friction plate because of moving outside the ball in the shell skewed slot is under centrifugal action, and the high speed gear driving gear on the bent axle is that gearing friction slice clutch and output shaft rotate; This moment, because the spindle center rotor, and the rotating speed of center rotor was greater than outer dish rotating speed on cam type overpass clutch, made overriding clutch be in not bonding state and dallied, and can not influence the work of centrifugal clutch conversely.

Beneficial effect: the utility model is applied to motor bike, and its beneficial effect is the automatic speed changing that only can realize motor bike with a kind of mode of handling throttle, and is simple to operation.

Description of drawings:

Fig. 1 is a constructional drawing of the present utility model, and Fig. 2 is the constructional drawing of centrifugal clutch, and Fig. 3 is the constructional drawing of cam type overpass clutch.To Fig. 1, Fig. 2, Fig. 3 is described as follows: 1 is the bent axle output shaft, and 2 is main shaft, and 3 is centrifugal clutch, 4 is the low gear driving gear, and 5 is cam type overpass clutch, and 6 is the high speed gear driving gear, 7 is the high speed gear driven gear, and 8 is friction disk clutch, and 9 is sleeve, 10 is clutch rotor, and 11 is clutch dog, and 12 is retracing spring, 13 is outer dish, and 14 is center rotor, and 15 is roller, 16 is cam, and 17 is shell, and 18 is active friction plate, 19 is from movable friction plate, 20 for recovering spring, and 21 is ball, and 22 is collar, 23 is vertical slot, 24 is external tooth, and 25 is skewed slot, and 26 is output gear.

The specific embodiment:

Centrifugal clutch 3 comprises sleeve 9, clutch rotor 10, clutch dog 11 and retracing spring 12, sleeve 9 endoporus divide two sections, the endoporus hypomere is enclosed within bent axle output shaft 1 outer can rotate around the axis, clutch rotor 10 is contained in and is positioned at the large diameter epimere of sleeve 9 endoporus on the bent axle output shaft 1 and can rotates with bent axle 1, clutch dog 11 is contained on the clutch dog axle of clutch rotor 10, link to each other with retracing spring 12 between the clutch dog 11, between clutch rotor 10 and clutch dog 11 and the sleeve 9 endoporus inwalls certain interval is arranged, low gear driving gear 4 is contained in sleeve 9 hypomeres outside; Cam type overpass clutch 5 comprises outer dish 13, center rotor 14 and roller 15, outer dish 13 can rotate around main shaft 2 on main shaft 2 with the borehole jack of bottom, on outer dish 13 endoporus several cams 16 are arranged, center rotor 14 is contained in the cam 16 that is positioned at outer dish 13 endoporus on the main shaft 2, roller 15 center rotor 14 cylindricals and outside between the cam 16 of dish on 13, coiling 13 cylindrical outward has tooth promptly to become the low gear driven gear to be meshed with low gear driving gear 4; Friction disk clutch 8 comprises shell 17, active friction plate 18, from movable friction plate 19, recover spring 20, ball 21 and collar 22, shell 17 endoporus divide two sections, the endoporus hypomere is enclosed within main shaft 2 outer can rotations around main shaft 2, on the large diameter endoporus epimere inwall several vertical slots 23 are arranged, active friction plate 18 and be loaded in the shell 17 endoporus epimeres from movable friction plate 19 alternate repeatedly putting, the circle 22 that is installed on go up most a slice active friction plate 18 blocks, active friction plate 18 has the disk that several external tooths 24 are arranged on the circular hole cylindrical for the center, can be in the vertical slot 23 that main shaft 2 rotates and embeds on the shell 17 endoporus outer walls with the external tooth on its cylindrical 24 outside main shaft 2 with its center circle hole sleeve, the disk of several inner spline gears is arranged can rotate with main shaft 2 spline on its inner spline gear embedding main shaft 2 for endoporus from movable friction plate 19, there are several radially on the bottom face of the larger diameter internal bore epimere of shell 17, therefrom mind-set outer in dark outer shallow skewed slot 25, place in the skewed slot 25 and can change active friction plate 18 and be the ball 21 of friction force size, recover spring 20 bottoms and place on the shell 17 endoporus bottom faces its upper end to pass following each layer active friction plate 18 and the hole from movable friction plate 19 withstands on the lower surface of the top a slice active friction plate 18 from the elasticity between the movable friction plate 19; High speed gear driving gear 6 is contained on the bent axle output shaft 1, and high speed gear driven gear 7 is contained in shell 17 outsides and is meshed with high speed gear driving gear 6, dress output gear 26 on the main shaft 2, and output gear 26 is connected with sprocket wheel with chain.

Claims

1, motor bike transmission system, comprise bent axle output shaft (1), main shaft (2), it is characterized in that also comprising centrifugal clutch (3), low gear driving gear (4), cam type overpass clutch (5), high speed gear driving gear (6), high speed gear driven gear (7) and friction disk clutch (8); Centrifugal clutch (3) comprises sleeve (9), clutch rotor (10), clutch dog (11) and retracing spring (12), sleeve (9) endoporus divides two sections, the endoporus hypomere is enclosed within outside the bent axle output shaft (1) and can rotate around the axis, clutch rotor (10) is contained in and is positioned at the large diameter epimere of sleeve (9) endoporus on the bent axle output shaft (1) and can rotates with bent axle output shaft (1), clutch dog (11) is contained on the clutch dog axle of clutch rotor (10), link to each other with retracing spring (12) between the clutch dog (11), between clutch rotor (10) and clutch dog (11) and sleeve (9) the endoporus inwall certain interval is arranged, low gear driving gear (4) is contained in sleeve (9) hypomere outside; Cam type overpass clutch (5) comprises outer dish (13), center rotor (14) and roller (15), outer dish (13) can rotate around main shaft (2) on main shaft (2) with the borehole jack on the bottom, on outer dish (13) endoporus several cams (16) are arranged, center rotor (14) is contained in the cam (16) that is positioned at outer dish (13) endoporus on the main shaft (2), roller (15) is positioned between the cam (16) on center rotor (14) cylindrical and the outer dish, and the cylindrical of outer dish (13) has tooth promptly to become the low gear driven gear to be meshed with low gear driving gear (4); Friction disk clutch (8) comprises shell (17), active friction plate (18), from movable friction plate (19), recover spring (20), ball (21) and collar (22), shell (17) endoporus divides two sections, the endoporus hypomere is enclosed within outside the main shaft (2) and can rotates around main shaft (2), on the large diameter endoporus epimere inwall several vertical slots (23) are arranged, active friction plate (18) and be loaded in shell (17) the endoporus epimere from alternate repeatedly the putting of movable friction plate (19), the circle (22) that is installed on go up most a slice active friction plate (18) blocks, active friction plate (18) has the disk that several external tooths (24) are arranged on the circular hole cylindrical for the center, can be outside main shaft (2) with its center circle hole sleeve around main shaft (2) rotation and in the vertical slot (23) on the external tooth on its cylindrical (24) embedding shell (17) the endoporus outer wall, the disk of several inner spline gears is arranged can rotate with main shaft (2) the spline on its inner spline gear embedding main shaft (2) for endoporus from movable friction plate (19), there are several radially on the bottom face of the larger diameter internal bore epimere of shell (17), therefrom mind-set outer in dark outer shallow skewed slot (25), placement can change active friction plate (18) and be the ball (21) of friction force size from the elasticity between the movable friction plate (19) in the skewed slot (25), recovers spring (20) bottom and places on shell (17) the endoporus bottom face its upper end to pass following each layer active friction plate (18) and the hole from movable friction plate (19) withstands on the lower surface of the top a slice active friction plate (18); High speed gear driving gear (6) is contained on the bent axle output shaft (1), and high speed gear driven gear (7) is contained in shell (17) outside and is meshed with high speed gear driving gear (6), and main shaft (2) is gone up dress output gear (26), and output gear (26) is connected with sprocket wheel with chain.