CN2189115Y - Transmission structure for cycle wheel - Google Patents

Abstract

The utility model relates to a direct driving gear which is suitable for a wheel of an ordinary cycle or a motorcycle, composed of an engine, a starting engaging and disengaging maneuvering rod and a gearing. The utility model is characterized in that two groups of clutches in specific combination form are used in the drive system to ensure the propitious enforcement of the utility model and solve the problem that three national patent applications with the same name as the utility model are unable to be conducted in deed. The driving gear is of compact structure and reasonable arrangement and is an ideal astatic apparatus for a cycle, which can be power-driven, as well as foot-operated or used by power and foot operation.

Description

Transmission structure for cycle wheel

The utility model relates to the direct drive unit of wheel, is applicable to that light-duty non-power-driven vehicle makes mechanical power, is suitable for especially being installed on the ordinary bicycle.

In recent years, domestic existing three patent applications by same contriver's application, its application number is respectively 85200689; 86102809 and 85101503, name is called the direct drive unit of wheel, these three invention contrast two U.S.'s patent family applications before this are on the layout of driving engine and drive disk assembly, be driven wheel wheel hub oad aspect and all done many improvement, reach 120 millimeters outward but still exist the outstanding vehicle frame of driving engine, wheel running center and the axial center of symmetry of running part problem too far away partially, the more important thing is, above-mentioned three patent applications, though obtain patent license-agreement through domestic many enterprises, still fail to implement successfully so far because of the problem in this device design.

The purpose of this utility model provides a kind of device that is contained in the direct drive wheel on ordinary bicycle or the trail bike, makes it to carry out or manually step on starting when capable at vehicle, also can be motor-driven and step on row simultaneously and use.

The utility model is a kind of direct drive unit of wheel, by driving engine, and starting and clutch controls, running part is formed; Be contained in its crankshaft center line of spark ignition engine of being driven on the wheel central hub and to be driven the wheel central axis parallel; Starting is installed in the wheel center shaft through-hole with clutch lever spare, and the hook-shaped bar intermediate support of shouldering is fixed on wheel center axle one end; Running part is by secondary gear reducer and two cover arrangement of clutch, and driven wheel nave is formed, the first order epicyclic reduction gear and the first cover friction clutch are installed in bent axle output axle head, friction clutch driving link endoporus cooperates with the square shaft shoulder of bent axle, and driven member friction drum and epicyclic reduction gear sun gear are integral structure.Axle journal place, bent axle termination is the driver pinion of second stage gear reducer, the equal sliding sleeve of passive big gear wheel of another set of power-transfer clutch and second stage gear reducer is contained in and is driven on the wheel center shaft, and passive big gear wheel is contained in the axle head that leans on driving engine one side on the center shaft in the gear reducer of the second stage.

Of the present utility model being characterised in that: the first cover power-transfer clutch is by the outer three lobe hub centrifugal friction clutch structures that suspend of ratchet band in three ratchets; The second cover power-transfer clutch is the unsteady outward roller-type overrunning clutch of embedded crosshead shoe band; The right big shelves of cross chute and the right little flower-drum consolidation of wheel nave in its band; Between two cover power-transfer clutchs is secondary gear reducer, first group of gear reducer is installed in the crankcase of engine crankshaft mouth, the driver pinion of second group of straight-tooth gear retarder is positioned at bent axle output axle head, passive big gear wheel is positioned at wheel center axle input end, this all is positioned in the large faceplate of wheel nave to gear, this large faceplate and a little flower-drum pressing are an integral body, second the cover power-transfer clutch, comprise the supporting the several of this power-transfer clutch bearing is installed in it.

First order gear reducer of the present utility model is three satellite gear gear reducers, three planet gears are clamped between the double width plate, wherein the right side former is an integral structure with the output driver pinion, between driver pinion hole and crankshaft neck needle bearing is housed, the bent axle axle head is equipped with ball bearing of main shaft, bent axle and driver pinion have been guaranteed, the kinematic accuracy between planetary wheel.

Engage accompanying drawing below, embodiment of the present utility model is done at length to introduce, so that can more nationally understand the design philosophy and the inventive features of this actuating device.

Description of drawings is as follows:

Fig. 1 is that the utility model is along engine crankshaft and wheel center axis longitudinal sectional drawing.

Fig. 2 is an A-A place section-drawing among Fig. 1, reflects that ratchet band outer floated three is distinguished the centrifugal friction clutch structure in three ratchets of the present utility model.

An embodiment of the present utility model is used on the ordinary bicycle trailing wheel, engine installation is in trailing wheel vehicle frame one side, as shown in Figure 1, engine crankshaft 1 is arranged in parallel with trailing wheel center shaft 15, the first cover power-transfer clutch is by the interior ratchet shell 2 among Fig. 1 and Fig. 2, ratchet 4, pawl base 3, spring leaf 14, the centrifugal iron heel sheet 5 that gets rid of of floated three lobes, two-way tension spring 29, friction lining 13 and band friction drum sun gear 12 are formed, and the outer ring of interior ratchet shell 2 has three to extend radially out convex shoulder, stretch into centrifugal the getting rid of between iron of three lobes that is divided into three by this convex shoulder, its endoporus cooperates with the square shaft shoulder of bent axle, ratchet 4 is transverse in by pin in the annular groove of pawl base 3 left ends, and pawl base 3 other ends are then in aggregates with the sun gear 12 right-hand member endoporus pressings of epicyclic reduction gear, and sun gear 12 left end inner ring surfaces then are the friction drum of the first cover power-transfer clutch.Epicyclic reduction gear is by the sun gear 12 of band friction drum, planetary wheel 32, and center planetary gear axle 31, epicyclic reduction gear internally toothed annulus 6 is formed.During starting, passive big gear wheel 9 drives driver pinion 10 rotations, driver pinion 10 left side formers are an integral structure with it, center planetary gear axle 31 1 end skies are enclosed within the driver pinion 10 left side former apertures, driver pinion 10 rotates, make former drive three planetary wheels 32 around sun gear 12 rotations, this moment, sun gear did not rotate, but because ratchet 4 drives 2 rotations of ratchet shell, square hole drives crankshaft revolution in the ratchet shell 2, and connect motor circuit this moment, opens throttle (its method of operation and common three wheeled motor car, the Bicycles and Motorcycles method is the same), driving engine can start.Otherwise when reaching certain rotating speed as the engine crankshaft that starting operation is got up, three lobes suspend and to get rid of iron 5 and friction lining 13 pushed to sun gear 12 left end friction drums under centrifugal action, make sun gear 12 rotation (its hand of rotation with starting time turn to identical) drive driver pinion and rotate through slow down former by driver pinion 10 of three planet gear reducers, mechanical movement is passed on the passive big gear wheel 9 of second stage gear reducer, finished the leading portion process of starting to normal operation.

In addition Transmission and controls be installed in wheel center axle 15 and with the manipulation push rod 18 of its coaxial line on, and deploy greatly in wheel hub left side large faceplate 8 and right little flower-drum 23.The cross shaft coupling 27 that its major part has the second cover power-transfer clutch, connect together second cover power-transfer clutch and the passive big gear wheel 9, step on capable sprocket wheel 20, compressor arm 17, pull back spring 34, steel cable 33, the hook-shaped bar 19 of shouldering; The main component parts of the second cover power-transfer clutch has the big retaining 25 in a cross recessed left side in the outer five flower roller slots of band, interior five flower roller collars 24, roller 16, cross recess right large gear 22 and crosshead shoe 21 in the band, right large gear 22 right-hand members with step on capable sprocket wheel 20 flush fits and be integral, and also adopt the flush fit structure with the right little flower-drum 23 of wheel nave, therefore when stepping on pedal, sprocket rotation can directly drive the wheel hub rotation, reach the purpose of riding, as the starting handgrip on the vehicle handlebar of holding with a firm grip, making the hook-shaped bar 19 left end arms of shouldering of steel cable 33 pullings, its right arm ejector pin 18 is left, right large gear 22 is become one by the big retaining in a crosshead shoe 21 and a left side, make sprocket wheel step on the row motion and pass to big gear wheel,, make engine starting through aforementioned type of drive through cross shaft coupling 27.Above-mentioned action was finished in very short time; one treat engine starting after; loosen the starting handgrip; left and right big retaining is promptly thrown off; this moment, passive big gear wheel was rotated with speed with left big shelves 25; roller on the big retaining outer ring, a left side is pressed under centrifugal action on the little Decorative drum inwall; drive the hub rotation and make the wheel fast rotational, step on pedal this moment, and sprocket wheel also can add to the certain moment of rotation of hub; therefore when vehicle driving up; motor-driven and step on row and can act on simultaneously, otherwise, as resistance greatly; three lobe friction linings 13 skid, and play the engine overload protective effect.The above-mentioned cover power-transfer clutch of first on the bent axle and epicyclic reduction gear and the second cover garden stud wheel retarder driver pinion of being contained in all is placed in the base chamber 30, and partly stretches in the large faceplate 8, makes the more apparent compactness of total.

Can find out from the above description, the utility model can be in stepping on capable process by bicycle halter handgrip pulling steel cable 33 actuating linkagies 19, or go-cart makes wheel revolutions, steps on pedal and makes under three kinds of states of wheel revolutions half cycle and make engine starting.When stopping as need are motor-driven, the damper brake handle on the tap of only need holding with a firm grip skids friction clutch friction lining 13.Reach the purpose as the common vehicle braking.

The first cover clutch-lining adopts copper powder prepreg, this material oil resistant, wear-resisting, long service life among the utility model embodiment.Used three ratchet ratchet structures are under crankcase oil bath condition, and noise is little, and starting steadily.

The utility model said structure characteristics are for forming through Improvement for many years on realizing in aforesaid three patent application implementation processes of the same name to the basis that solves these three the inaccessible enforcement purposes of invention, do not reach the expection purpose during the utility model can help all enterprises that obtains above-mentioned three patent license-agreements to break away to implement for many years and draw ring product come out the predicament of the economy of bringing and other side.

Claims (4)

1, a kind of direct drive unit of wheel is made up of following part: driving engine, starting and clutch controls, running part; Be contained in and be driven wheel its crankshaft center line of spark ignition engine on the central hub and be driven that to take turns central axis parallel; Starting is installed in the wheel center shaft through-hole with clutch lever spare, and hook-shaped lever intermediate support is fixed on the nave boss center shaft one end wall upper bracket; Running part is by secondary gear reducer and two cover arrangement of clutch, and the wheel nave that is driven directly is formed, the first order planetary wheel speed device and the first cover friction clutch are installed in bent axle output axle head, friction clutch driving link endoporus cooperates with the square shaft shoulder of bent axle, driven member friction drum and epicyclic reduction gear sun gear are integral structure, axle journal place, crankshaft end termination is garden, a second stage stud wheel retarder driver pinion, the equal sliding sleeve of passive big gear wheel of the another set of power-transfer clutch and the second gear stage retarder is contained in and is driven on the wheel center shaft, passive big gear wheel is installed in and leans on driving engine one side shaft end on the wheel center axle in the gear reducer of the second stage, of the present utility model being characterised in that: the first cover power-transfer clutch is the outer three lobe centrifugal friction clutch structures that suspend of ratchet band in three ratchets; The second cover power-transfer clutch is the outer roller-type overrunning clutch structure of embedded crosshead shoe band, and the right big shelves of cross chute are one with the right little flower-drum pressing of wheel nave in its band.

2, according to the direct drive unit of the described a kind of wheel of claim 1, it is characterized in that: wheel nave is an integral structure by large faceplate and little Decorative drum pressing;

3, according to the direct drive unit of the described a kind of wheel of claim 1, it is characterized in that: the first order reduction gear apparatus that is contained in crankshaft output end is the board-like retarders of three satellite gear double widths;

4, according to the direct drive unit of the described a kind of wheel of claim 1, it is characterized in that: a pair of big miniature gears of second stage gear reducer all is installed in the large faceplate of wheel nave.

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