CN2157128Y - Booster for wheeled vehicle drawn by man - Google Patents

Abstract

The utility model belongs to a booster for boost-driving bicycles and manpower tricycles. The purpose is to reduce the high rotation speed of a minitype carburettor to the wheel rotation speed of 150-200 r/min of a rickshaw by introducing a gear with few tooth number (z=2-3) to the booster. The practical rickshaws are driven by manpower or boosters alone or jointly. The utility model is characterized in that a driving on-off mechanism on a centre shaft 13 of a rickshaw coordinates with an involute (or circular arc) gear crankshaft 1 which is dentiform and with a few tooth number. The utility model has the advantages that the purpose of deceleration can be achieved by the first-grade minority gear transmission, and has the advantages of simple structure, small size, low cost and superior performance.

Description

Booster for wheeled vehicle drawn by man

The utility model belongs to a kind of servo-unit that is used for bicycle, the driving of manual tricycle power-assisted.

In background technology, the bicycle and the small manual three-wheel vehicle of servo-unit appearred being equipped with in China in recent years, both can step on row by manpower, also can be driven by servo-unit and travel.Existing servo-unit is prime power with the put-put, and driving device has two kinds of forms: in first kind of form, be provided with multistage common cylinder reduction gear apparatus behind the driving engine, remove to drive the bicycle floral disc, thereby make vehicle '; In second kind of form, be provided with epicyclic gear transmission behind the driving engine earlier, the frictional transmission of forming by a friction wheel and car handle car wheel covering makes bicycle running again.These two kinds of form common drawback are complex structures, and transmission link is many, easy break-down, and efficient is low, the cost height.Also because frictional transmission is subjected to the influence of Tyre inflating degree, rainwater mire, it is very unreliable to work for the servo-unit of second kind of form.

The purpose of this utility model is: according to former invention " gear with little teeth number retarder " patented technology, the The transmission of gear with few teeth of miniature gears number of teeth Z1=2～3 is introduced the rickshaw servo-unit, only use a pair of gear transmission, just can make the high rotating speed 4000～6000r/min of put-put reduce to wheel of human powered vehicle rotating speed 150～200r/min, be equipped with power-transfer clutch and overriding clutch dexterously, realize rickshaw can manpower or the servo-unit independent drive travel, but also The combined drives and travels.

Technical solution of the present utility model is:

On the engine crankshaft 1 in crankcase 8, with pin connecting engine crank 6 and connecting rod 7, bent axle 1 one ends assembling magneto rotor 10, assembling overriding clutch 12 and large faceplate 11 on the rickshaw axis 13, its special character is that the transmission engaging and disengaging gear on the rickshaw axis 13 cooperates with the gear with little teeth number bent axle 1 of involute (or circular arc) profile of tooth.

Technical solution of the present utility model also comprises:

With few number of teeth (Z1=2 or 3) the driving gear ingear driven gear 2 on the bent axle 1, bottom bracket axle 17 with suit on denture clutch 22 and the vehicle axis 13 connects, bottom bracket axle 17 usefulness keys, connection dish 23, bolt 15 connect vehicle floral disc 11, floral disc 11 usefulness overriding clutchs 18 are assemblied on the pedal 19, denture clutch 22 usefulness overriding clutchs 18, narrow gear 16 drive narrow gear 24 transmissions that are contained on the bent axle 1 and realize engine ignition, the shift fork 20 of denture clutch 22 assembly controls movably about on the bottom bracket axle 17.Rely on overriding clutch 12 and 18, the ingenious cooperation of denture clutch realizes that servo-unit starts, idling, motor-driven, manpower drives, unite various operating mode such as driving, sees shown in Figure 3.

With few number of teeth (Z1=2 or 3) the driving gear ingear driven gear 2 on the bent axle 1, drive the minor sprocket of intermediate chain transmission 4 with friction clutch 3, clutch spindle 5, the hinge wheel of intermediate chain transmission 4 of being connected on the rickshaw axis 13 connects minor sprockets with chain 14, the clutch control lever 9 that is assemblied on the base chamber 8 is stirred concentric axostylus axostyle in the engagement clutch axle 5, control clutch 3 work.By friction clutch 3 with ingenious cooperation of overriding clutch 12 realize various operations, see illustrated in figures 1 and 2.

Servo-unit can directly be assemblied on the rear axle of rickshaw.The reduction ratio of servo-unit relatively can be littler.

The hinge wheel that is assemblied on the floral disc 11 and cooperates with minor sprocket 4 on the axle 5 can be retrofitted on the rickshaw rear axle.The reduction ratio of servo-unit relatively can be littler.

Description of drawings of the present utility model is as follows:

Fig. 1 is the structural representation of servo-unit embodiment one.

Fig. 2 is the floral disc scheme drawing of servo-unit embodiment one.

Fig. 3 is the structural representation of servo-unit embodiment two.

Above number in the figure is described as follows:

1-engine crankshaft and few number of teeth miniature gears, 2-driven gear, 3-friction clutch open in usual, the transmission of 4-intermediate chain, 5-clutch spindle, 6-engine crank, the 7-engine link, the 8-base chamber, 9-clutch lever, 10-magneto rotor, the 11-large faceplate, 12,18-overriding clutch, 13-rickshaw axis, 14-rickshaw chain, the 15-bolt, 16, the narrow gear of 24-, 17-bottom bracket axle, 19-pedal, the 20-shift fork, pedestal among the 21-, 22-denture clutch, 23-tie-plate.

Embodiment of the present utility model is described as follows:

Embodiment 1: referring to Fig. 1 and Fig. 2, in above-mentioned said structure, the number of teeth of gear with little teeth number output shaft 1 is Z1=2～3, and the number of teeth of the driven gear 2 that is meshed with it is suitably determined according to vehicle.Large faceplate 11 fixedly becomes one with bolt 15 with middle chain-drive hinge wheel and rotates synchronously, again by chain 14 horsepower outputs, drives rickshaw and advances.Whole principle of work is like this: when need are worked with servo-unit, stir joystick 9, the push rod in the clutch spindle 5 moves to right, and short pin makes friction clutch 3 combinations open in usual on it, steps pedal and can make engine ignition.Engine output shaft is passed to intermediate chain transmission 4 by gear with little teeth number 1,2 transmissions with power, drives floral disc 11 and clockwise rotates, and this moment, overdrive clutch 12 and axis 13 did not rotate, and output chain 14 drives vehicle '.When with foot-operated travelling, friction clutch 3 is broken away from, step axis 13 and clockwise rotate, overriding clutch 12 is in bonding state, thereby travels as common bicycle manpower.When going up a slope, the under power that servo-unit drives also needs to drive pedal with manpower simultaneously, and when foot-operated rotating speed equaled the rotating speed of servo-unit transmission, the associating driving was realized at two kinds of power interflow.

Embodiment 2: see shown in Figure 3, when shift fork 20 action makes denture clutch 22 be in shown position, narrow gear 16,24 engagements, gear 2 is thrown off with denture clutch 22, steps pedal 19 and just can make engine ignition starting, idling.When shift fork 20 is stirred to the right, make narrow gear 16,24 jump out of meshs, when denture clutch 22 combines with gear 2, bicycle is driven by gear wheel shaft 1, gear 2, bottom bracket axle 17, tie-plate 23 and floral disc 11 by driving engine and travels, because the effect of overriding clutch 12, axis 13 and pedal 19 can not change.In like manner also can step and ride 19, realize that manpower and power link drive.

The utility model has the advantages that:

Adopt the one-level The transmission of gear with few teeth just can reach the purpose of deceleration, simple in structure, size is little, and cost is low, take manpower to pedal as main, but also power drive or both drive jointly, under fuel consume condition seldom, alleviate people's fatigue by bike on and off duty; Long-distance travel also can keep fast speed to save time; Play by bike and also can promote enjoyment; Superior performance, it is reliable to travel, the Social benefit and economic benefit height.

Claims (5)

1, rickshaw servo-unit, comprise: on the engine crankshaft (1) in crankcase (8), with pin connecting engine crank (6) and connecting rod (7), bent axle (1) one end assembling magneto rotor (10), rickshaw axis (13) is gone up assembling overriding clutch (12) and large faceplate (11), it is characterized in that: the transmission engaging and disengaging gear on the rickshaw axis (13) and involute or arc toothed gear with little teeth number bent axle (1) cooperate.

2, rickshaw servo-unit according to claim 1, it is characterized in that: with the few tooth number Z 1=2～3 driving gear ingear driven gears (2) on the bent axle (1), the bottom bracket axle (17) of going up suit with denture clutch (22) and vehicle axis (13) connects, bottom bracket axle (17) is used key, connection dish (23), bolt (15) connects vehicle floral disc (11), floral disc (11) is assemblied on the pedal (19) with overriding clutch (18), denture clutch (22) overriding clutch (18), narrow gear (16) drives narrow gear (24) transmission be contained on the bent axle (1) and realizes engine ignition, the shift fork (20) of denture clutch (22) assembly control movably about bottom bracket axle (17) is gone up.

3, rickshaw servo-unit according to claim 1, it is characterized in that: with the few tooth number Z 1=2～3 driving gear ingear driven gears (2) on the bent axle (1), drive the minor sprocket of intermediate chain transmission (4) with friction clutch (3), clutch spindle (5), the hinge wheel of intermediate chain transmission (4) of being connected on the rickshaw axis (13) connects minor sprocket with chain (14), the clutch control lever (9) that is assemblied on the base chamber (8) is stirred concentric axostylus axostyle in the engagement clutch axle (5), control clutch (3) work.

4, rickshaw servo-unit according to claim 1 and 2 is characterized in that: servo-unit can directly be assemblied on the rear axle of rickshaw.

5, according to claim 1 or 3 described rickshaw servo-units, it is characterized in that: be assemblied in that floral disc (11) is gone up and the hinge wheel that cooperates with minor sprocket (4) on the axle (5) can be retrofitted on the rickshaw rear axle.

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