CN2170265Y - Device for directly driving wheels - Google Patents

Abstract

The utility model relates to a device for directly driving wheels used for bicycles, motorcycles and various minitype automotive vehicles, and comprises a control mechanism, a hollow shaft, a hub, a dynamic driving mechanism and an engine. A clutch mechanism of the dynamic driving mechanism adopts two flywheels arranged opposite in the direction of coils. Each flywheel matches with the hub by a connecting piece, wherein, one of the flywheels is fixed on a sliding sleeve, and another flywheel coordinates with a retarding mechanism. The utility model uses a dual flywheel structure, and has not only the advantages of low requirement about the accuracy of parts' manufacturing and cost reducing, but also the advantages of agile and reliable mechanical driving with avoiding the phenomenon of jamming and bashing a fly tooth, lowering failure rate and also simplifying the structure with arranged on a vehicle frame easily.

Description

Device for directly driving wheels

The utility model relates to a kind of mechanical actuation device of vehicle, is mainly used in the direct drive unit of the wheel of bicycle, motor bike and all kinds of equipment of small motor vehicles.

Prior art such as Chinese patent 85200689 described " direct drive unit of wheel ".This device comprises driving engine, power drive system, hollow shaft, wheel hub and steering unit.The operating handle of its steering unit is installed on the handlebar, the push rod of steering unit protrudes on the hollow shaft that is installed in central frame beam, hollow shaft has outward and vehicle wheel spoke bonded assembly wheel hub, be provided with moving transmission device between hollow shaft and the wheel hub, Power train is as shown in Figure 1: by gear case a, engaging and disengaging gear b, planetary gear speed reducing mechanism c, drive the sliding sleeve 5 of clutches engaged, sun gear 6 constitutes, gear case a cooperates with the bent axle of the driving engine that is loaded on the vehicle frame side, one gear of gear case is stretched a spline in a perforate of sliding sleeve 5, there is a spline to reach in the perforate of sun gear 6 on the sliding sleeve 5, sliding sleeve 5 and sun gear are enclosed within on the hollow shaft 2, and sliding sleeve 5 cooperates with pin 21 on the steering unit push rod 20.This device promotes sliding sleeve 5 by steering unit and makes engaging and disengaging gear work, finally makes the engine ignition starting, drives wheel by Power train behind the engine starting and travels forward.The shortcoming that this device exists is: adopted the axial castellated end face clutch and the combination mechanism of overriding clutch radially in its Power train, so as to start the engine and transmission outputting power.Because the part of this combination mechanism is various, quality of fit requires height, so the manufacturing cost height, processing difficulties.And axial castellated end face clutch is subjected to starting-impact, often breaks tooth, takes off not open the shake of contrarotation sometimes, produces stronger mechanical vibration, so solid fault rate height, mechanical life is short.Be prone to the local stress inequality during work of warp-wise overriding clutch, particularly (power-transfer clutch should skid) has catching phenomenon when contrarotation occurring, causes damage parts or mis-use breakdown.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, provides a kind of Power train simple in structure, flexibility and reliability, and physical construction is easy break-down not, handling ease, the direct drive unit of the wheel that cost is low.

Solution of the present utility model is: the direct drive unit of wheel is by the hollow shaft that is installed in central frame beam, bar handle is on handlebar, the steering unit of push rod in hollow shaft, hollow shaft connects the wheel hub of spoke outward, Power train between hollow shaft and the wheel hub and the driving engine that cooperates with Power train are formed, wherein: Power train comprises the gear case that cooperates with engine crankshaft, the engaging and disengaging gear of transmission power, row is speed reduction gearing, fixedly engaging and disengaging gear and the sliding sleeve that cooperates with gear case and steering unit, drive planetary gear speed reducing mechanism and with sliding sleeve bonded assembly sun gear, the engaging and disengaging gear that is characterized in Power train is made of the relative flywheel of installing of two rotation directions, each flywheel flies tooth and cooperates with wheel hub by attaching parts, be fixed on sliding sleeve on relative another flywheel of flywheel put with planetary gear speed reducing mechanism and cooperate by being fixed on a satellite gear.Its working process is: during starting, when the Manpower propulsion of bicycle wheel rotates forward, bar handle on the handlebar is spurred, the sliding sleeve that cooperates with steering unit is moved, what be fixed on flywheel on the sliding sleeve flies tooth and attaching parts engagement, because at this moment wheel is rotating, by the spoke transmission wheel hub is rotated, by attaching parts be delivered to flywheel drive sliding sleeve around air shaft rotate (meanwhile, since another flywheel be installed in sliding sleeve on the opposite installation of flywheel rotation direction, when wheel hub initiatively, this flywheel skids), the gear that slip cap drives the gear case that is mated rotates, and engine crankshaft is rotated, give driving engine with startup power, and drive engine ignition.Behind the engine starting, unclamp bar handle, under the steering unit effect, the sliding sleeve return, fly tooth and the attaching parts of the flywheel on the sliding sleeve break away from.Behind the engine starting, by the bent axle gear rotation of driven gear case conversely, thereby sliding sleeve is rotated, sliding sleeve drives sun gear and rotates around hollow shaft, planetary gear speed reducing mechanism is rotated, planetary gear speed reducing mechanism puts the Motion Transmission of slowing down by satellite gear to satellite gear, the flywheel that satellite gear puts drives the wheel hub rotation by the attaching parts of flywheel, and the wheel of vehicle is rolled forward.

The utility model advantage compared with prior art: the flywheel that the engaging and disengaging gear of the utility model medium power transmission device adopts two rotation directions to install relatively.Adopt the round trip flight structure, not only accuracy of manufacture is less demanding, has reduced cost, and especially machinery cooperates flexibility and reliability, is not prone to clamping stagnation, breaks and fly the tooth phenomenon, and fault rate is low, handling ease.And, make designs simplification, dwindle axial dimension, so that easier being installed in the vehicle frame.

The utility model can further specify in conjunction with the accompanying drawings.

Fig. 1 is a prior art medium power transmission device structural representation;

Fig. 2 is installed in erection plan on the vehicle frame for the utility model;

Fig. 3 is the utility model Power train structural representation;

Fig. 4 is gear case and driving engine fit structure scheme drawing;

Fig. 5 is a three-wheel planetary gear structure scheme drawing;

Fig. 6 is the flywheel structure scheme drawing.

The utility model embodiment can further specify in conjunction with the accompanying drawings.

As shown in Figure 2, the direct drive unit of wheel is made up of steering unit, hollow shaft 2, wheel hub 3, power engine structure and driving engine.Hollow shaft 2 is loaded on the vehicle frame 1.The bar handle 16 of steering unit is loaded on the handlebar 17, the push rod 20 that bar handle 16 promotes to be loaded in the hollow shaft 2 by brake cable 18 control push rod devices 19, push rod 20 front ends have a pin 21 that reaches in sliding sleeve 5 chutes of Power train, at the other end of hollow shaft 2 sold inside the country 21 spring return mechanism 22 are arranged.The hollow shaft 2 outer wheel hubs 3 that have in vehicle frame 1, the spoke 23 of connection wheel on the wheel hub 3.The sliding sleeve 5 of Power train is enclosed within on the hollow shaft, and sun gear 6 is enclosed within on the hollow shaft 2, and the engaging and disengaging gear of actuating unit and planetary gear speed reducing mechanism are between hollow shaft 2 and wheel hub 3.The big gear wheel 24 of the gear case of Power train cooperates with sliding sleeve 5 by spline 25, big gear wheel 24 and miniature gears 26 engagements, and miniature gears 26 cooperates with the bent axle 27 of driving engine by an overrunning clutch mechanism.Driving engine is provided with the magneto generator 28 and the silencer 29 of control ignition.

As shown in Figure 3, moving transmission device is by the sliding sleeve 5 that is subjected to steering unit control, by spline and sliding sleeve 5 bonded assembly sun gears 6, the flywheel of fixing on the sliding sleeve 57, be fixed on the wheel hub and can fly the attaching parts that tooth cooperates with flywheel 7, with sun gear 6 is the planetary gear speed reducing mechanism of center rotor wheel, connects the satellite gear cover 9 that cooperates with planetary gear speed reducing mechanism by bearing pin 14, be fixed on the flywheel 7 that satellite gear puts ' be fixed on the wheel hub 3 with flywheel 7 fly tooth ingear attaching parts formation.Wherein: two flywheels (7,7 ') rotation direction is installed relatively, and the attaching parts that cooperates with flywheel 7 constitutes by being fixed on the bayonet lock 11 that the corresponding flywheel 7 that stretches out on fluted disc 10 on the wheel hub 3 and the fluted disc 10 flies teeth groove; With the attaching parts of flywheel 7 ' cooperate by be fixed on stretch out on cover plate 12 on the wheel hub 3 and the cover plate 12 reach bayonet lock 11 in the teeth groove of flywheel 7 ' fly ' constitute.

Planetary gear speed reducing mechanism is the three-wheel satellite gear among Fig. 5, and its inner gear 13 is fixed on the hollow shaft 2, inner gear 13 and three satellite gear 15 engagements, sun gear 6 and three satellite gear 15 engagements.

Flywheel among Fig. 6 (7,7 ') fly 11 engagements of tooth and bayonet lock, bayonet lock 11 is engaged on flying in the teeth groove of flywheel (7,7 ').

The working process of the utility model embodiment such as Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6: when the Manpower propulsion of bicycle wheel rotates forward, handle on the handlebar 17 16 is pressed the pull-up of arrow A direction, by brake cable 18 pulling push rod devices 19, push rod 20 is moved axially along the arrow B direction, make pin 21 promote sliding sleeve 6, the flywheel 7 that drive is fixed on it moves and bayonet lock 11 engagements, and bayonet lock 11 is stuck in flying in the teeth groove of flywheel 7.Because wheel travels forward, spoke 23 rotates wheel hub 3, by bayonet lock 11 flywheel 7 and sliding sleeve 5 are rotated around hollow shaft 2, sliding sleeve 5 drives big gear wheel 24 by spline 25 and rotates, and big gear wheel 24 drives miniature gears 26 and rotates, wedyed disc 30 is rotated by the barrel tumbler 32 that roller 31 drives overriding clutch, barrel tumbler 32 adopts key to be connected with bent axle 27, so bent axle 27 rotates, makes eccentric knee-piece 33 promote piston rod 34 and moves in piston 35, fire an engine, starter magneto 28 igniting simultaneously.Behind the engine starting, unclamp bar handle 16, under 22 effects of spring return mechanism, push rod 20, pin 21, sliding sleeve 5 reset, and flywheel 7 breaks away from bayonet lock 11.Behind the engine starting, piston rod 34 moves around and drives bent axle 27 motions, by borrowing centrifugal friction power that the outer dish 37 of power-transfer clutch is rotated with the centrifugal block for clutch use 36 of bent axle 27 bonded assembly barrel tumblers 32 drive overriding clutchs, again by with outer dish 37, the miniature gears 26 that wedyed disc 30 fuses drives big gear wheel 24 and rotates, give sun gear 6 by sliding sleeve 5 with the rotating band of big gear wheel 24, sun gear 6 drives three satellite gears 15 that are engaged with and rotates along inner gear 13, existing and the sun gear 6 ingear rotations of the rotation of satellite gear 15, have again along the revolution of inner gear 13, bearing pin 14 is enclosed within the center of circle of satellite gear 13, bearing pin 14 is revolution speeds of planetary wheel 13 around the rotation of hollow shaft 2, corresponding satellite gear cover 9 rotations around hollow shaft 2 that are enclosed within on the bearing pin 14 obtain slowing down, satellite gear cover 9 drives flywheel 7 ' rotation, be fixed on the wheel hub cover plate 12 and with fly tooth ingear bayonet lock 11 and drive wheel hubs and rotate, wheel is travelled forward, because flywheel (7,7 ') be that rotation direction is installed relatively, during work, even flywheel 7 takes off not open bayonet lock, because flywheel 7 is done initiatively under the driving engine drive situation, therefore skid between flywheel 7 and the bayonet lock 11, be in contrarotation.Equally, flywheel 7 ' if also skid when meeting contrarotation (moving back car).

Claims (4)

1, a kind of direct drive unit of wheel, by being installed in the middle hollow shaft (2) of vehicle frame (1), steering unit, outer and the vehicle wheel spoke bonded assembly wheel hub (3) of hollow shaft (2), Power train between hollow shaft (2) and the wheel hub (3) and cooperate driving engine to form with Power train, wherein: Power train comprises the gear case that cooperates with engine crankshaft, the engaging and disengaging gear of transferring power, planetary gear speed reducing mechanism, fixedly engaging and disengaging gear and the sliding sleeve (5) that cooperates with gear case and steering unit, drive speed reduction gearing and constitute with sliding sleeve (5) bonded assembly sun gear (6), it is characterized in that: the flywheel (7 that the engaging and disengaging gear of Power train is installed relatively by two rotation directions, 7 ') constitute, each flywheel (7,7 ') fly tooth by attaching parts (8,8 ') cooperate with wheel hub (3), and be fixed on sliding sleeve (5) and go up the relative flywheel (7 ') of flywheel 7 and go up and cooperate with planetary gear speed reducing mechanism by being fixed on a satellite gear cover (9).

2, the direct drive unit of wheel according to claim 1 is characterized in that flywheel (7) flies attaching parts (8) that tooth and wheel hub (3) cooperate and flies bayonet lock (11) formation of teeth groove for being fixed on the corresponding flywheel (7) that stretches out on fluted disc (10) on the wheel hub (3) and the fluted disc (10).

3, the direct drive unit of wheel according to claim 1 is characterized in that flywheel (7 ') flies attaching parts (8 ') that tooth cooperates with wheel hub and flies bayonet lock (11 ') formation in the teeth groove for being fixed on the flywheel (7 ') that reaches that stretches out on cover plate (12) on the wheel hub (3) and the cover plate (12).

4, according to the direct drive unit of claim 1,2 or 3 described wheels, it is characterized in that planetary gear speed reducing mechanism is a three-wheel satellite gear, satellite gear cover (9) is by satellite gear (15) bearing fit of a bearing pin (14) with the three-wheel satellite gear.

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