CN2261387Y - Bicycle aid - Google Patents

Abstract

The utility model provides a bicycle aid, comprising an engine, automatic clutch, a gear, etc. The utility model is characterized in that the aid is fixed to a back wheel shaft of a bicycle; the upper end of the aid is fixedly clamped on a back upright post of a triangular frame through an arm and the lower end is fixed on the back wheel shaft by screw bolts. The aid can achieve aiding purpose through a power output gear is utilized for driving a bicycle shaft gear to rotate. The utility model has the advantages of simple structure; small size, high operational reliability, no resistance, convenient operation, etc.

Description

A kind of Accelarators for bicycles

The utility model relates to the bicycle driving device, particularly a kind of servo-unit that adopts the engine drive trailing wheel to travel.

Deficiencies such as common Accelarators for bicycles generally all has complex structure, and functional reliability is low, cost is high, the life-span is short, and complexity is installed, and change the structure of bicycle in a large number, and exist volume big, and outward appearance is not beautiful.

The purpose of this utility model provides a kind of simple installation, delicate structure, good looking appearance, and the functional reliability height, cost is low, utilizes the Accelarators for bicycles of engine drive trailing wheel.

Technical solution of the present utility model is, this servo-unit is arranged on the hind axle, and its upper end is fixed on the spider rear column 12 by arm folder 11, and the lower end is fixed on the hind axle 13 by bolt 6.The output shaft of driving engine 3 is provided with a power output gear 26, and this gear and axletree gear 28 are interlocked the formation running-fit and produce power-assist power.

Said bent axle 16, flywheel 30 and three synthetic assemblies of breakerless ignition magnetic patch, wherein bent axle 16 is monolateral body, and magnetic patch 17 is positioned at the edge of bent axle, and bent axle hollow is cast with to increase the plumbous body 18 of flywheel inertia and counterweight balance.In addition, on self-acting clutch 19, be equipped with on the single load bearing gear 27 that ratchet 20 acts on driven gear 21, thereby constitute the overriding clutch of fire an engine 3 work.

Below in conjunction with accompanying drawing the utility model is illustrated.

Fig. 1 is a back view of the present utility model.

Fig. 2 is for overlooking sectional structure chart.

Fig. 3 is crankshaft structure figure.

Referring to Fig. 1, fuel tank 2, driving engine 3, carburetor assembly 4, bolt 6, arm folder 11, column 12, high-tension coil 15, axletree gear 28, backshaft skin 29.

Referring to accompanying drawing 2, the drop-gear box shell 31 of this servo-unit is placed in outer ring, rear vehicle shaft skin 29 left side, and axletree gear 28 screws in backshaft skins 29 left side inner rings, and drop-gear box shell 31 connects engine cases 32, and bolt of rear end plate 6, arm folder 11 make this servo-unit firm.During operation, switch 23 is turned round to the power-assisted gear, spring 25 traveling gear 24 engaging gears, 26 rotating-wheels also pass ratchet 20 to overriding clutch to power by gear cluster, drive bent axle 16 rotations and make driving engine 3 igniting.After driving engine 3 started, the ratchet of overriding clutch was not worked, does not influence the mode of operation of servo-unit yet.When reaching certain rotating speed, automatic centrifugal clutch is worked all the time, clutch plate gear 21 driven gears 22 of holding concurrently are made the first order and are slowed down, gear 24 driven gears 26 are done the second stage and are slowed down, gear 26 drives axletree gear 28 and does third stage deceleration, thereby is driven backshaft skins 29 rotations and reached power-assisted purpose by axletree gear 28.

Referring to Fig. 3, bent axle 16 is for reducing the monolateral design that the servo-unit volume adopts, and magnetic patch 17 is positioned on bent axle 16 edges, and when bent axle 16 rotations, changes of magnetic field just can cause 15 igniting of breakerless ignition assembly.Bent axle 16 hollows castings is plumbous 18, to reach the inertia that increases crankshaft-flywheel and the center of gravity of balance crankshaft 16.

The utility model using method is: oil circuit is connected, switch is pushed power-assisted shelves place, ride bicycle control throttle, the cylinder that this moment, wheel just drove driving engine catches fire, and the control throttle is the speed of may command vehicle just.When the speed of a motor vehicle slowed down or brake, self-acting clutch and overriding clutch can not increase the resistance of car, and driving engine can not stop working because of parking.When open the throttle wide once more, sedimentator engages, and vehicle advances again.

When needs are ridden with manpower, switch is pushed the manpower gear, at this moment, and close shift fork 23 can be with 24 groups of gears from gear 26, wheel just separates automatically with power-transfer clutch, thereby driving engine can not bring any resistance to the user, travels freely as ordinary bicycle.

Claims (4)

1, a kind of new bicycle servo-unit, by fuel tank (2), driving engine (3), bent axle (16), magnetic patch (17), starting self-acting clutch (19), switch (23), axletree gear (28), flywheel formations such as (30), it is characterized in that: this servo-unit is arranged on the hind axle, its upper end is fixed on the spider rear column (12) by arm folder (11), the lower end is fixed on the hind axle (13) by bolt (6), the output shaft of driving engine (3) is provided with a power output gear (26), and this gear and axletree gear (28) are interlocked the formation running-fit and produce power-assist power.

2, new bicycle servo-unit according to claim 1, it is characterized in that: by bent axle (16), flywheel (30) and three synthetic assemblies of breakerless ignition magnetic patch, wherein bent axle (16) is monolateral body, magnetic patch (17) is positioned at the edge of bent axle, and bent axle hollow is cast with to increase the plumbous body (18) of flywheel inertia and counterweight balance.

3, according to the described Accelarators for bicycles of claim claim 1, it is characterized in that: be equipped with on the automatic centrifugal clutch (19) on the single load bearing gear (27) that ratchet (20) acts on driven gear (21), thereby constituting the overriding clutch of fire an engine (3) work.

4, Accelarators for bicycles according to claim 1 is characterized in that: said axletree gear (28) makes it to become a moving integral body with being threaded into backshaft skin (29) nexine.

Images