CN2202711Y

CN2202711Y - Force-aid device for bicycle

Info

Publication number: CN2202711Y
Application number: CN 94210391
Authority: CN
Inventors: 阎友明
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-06
Filing date: 1994-05-06
Publication date: 1995-07-05
Anticipated expiration: 2004-05-06

Abstract

The utility model relates to a force-aid device for bicycles. The utility model is composed of connecting shafts 1, 12, gears 2, 3, 11, a guide sleeve 4, a spring 5, an outer sleeve 6, a wheel disc 7, a supporting reversal wheel 8, flywheels 9, 10 and a rack bar 13. A saddle vertical tube 14 is inserted into the outer sleeve 6, and the rack bar 13 is welded at the lower end; the spring 5 is sheathed on the outer sleeve 6; the gears 2, 3 are integration element with different diameters and are arranged on the shaft 1; the gear 11 and the wheel disc 7 are arranged on the shaft 12; the two flywheels 9, 10 are integration element with the same diameter and are connected with the wheel disc by a chain and the reversal wheel 8. Bicycles with the force-aid device are suitable for riding on a rural road. Because the continual jolts can enable the force-aid device to work continually, the purpose of force aid can be achieved.

Description

Force-aid device for bicycle

The utility model relates to a kind of Accelarators for bicycles, especially a kind of Accelarators for bicycles of being made up of mechanical component.

At present, front-wheel servo-unit and servo-unit are against the wind arranged on the market, the front-wheel servo-unit is to have set up a miniature gasoline engine at the front-wheel position of bicycle, utilizes the front-wheel of the power driven bicycle that miniature gasoline engine produces, and makes bicycle reach the labour-saving purpose.But complex structure needs the energy.Servo-unit is made up of fan against the wind, and inconvenience is installed, and applicability is not strong.

The purpose of this utility model is in order to provide a kind of simple in structure, not need the Accelarators for bicycles of external energy device.

This Accelarators for bicycles is by

adapter shaft

1,12,

gear

2,3,11, guide pin bushing 4, spring 5, outer tube 6, wheel disc 7, support reversing wheel 8, flywheel 9,10 and tooth bar 13 form, the cross support arm that it is characterized in that welding one band guide pin bushing 4 below the upright beam of bicycle rack interior, the upper end of outer tube 6 is fixing by the fork that retreads of fastener and vehicle frame, the lower end of outer tube 6 penetrates in the guide pin bushing 4 and fixes with jackscrew, there is slotted hole the both sides, upper end of outer tube 6, there is a through hole upper end of vehicle seat standpipe 14, vehicle seat standpipe 14 inserts in the outer tube, pass the upper end through hole of vehicle seat standpipe 14 from the slotted hole of outer tube 6 with pin, at the lower end of vehicle seat standpipe 14 welding tooth bar 13, spring 5 is enclosed within on the outer tube 6, its lower end contacts with the end face of guide pin bushing 4, touch with the lateral pin nail joint of vehicle seat standpipe 14 upper ends its upper end, on the back chain stay of bicycle rack, adorn two pairs of support brackets, gear 2, the 3rd, the integral piece that diameter is different, be contained in by adapter shaft 1 on a pair of support bracket of back chain stay, make miniature gears 2 and tooth bar 12 engagements, after gear 11 is contained in by adapter shaft 12 on the chain stay another is on the support bracket, and with gear 3 engagement, end at adapter shaft 12 also is equipped with wheel disc 7 simultaneously, flywheel 9,10 is the identical integral piece of diameter, be contained on the rear axle housing of bicycle, weld the bracing frame of a tape spool in bicycle post-tensioning fork bottom, with nut and packing ring will support reversing wheel 8 be contained in this bracing frame the axle on, wheel disc 7, flywheel 9,12 and support chain connection of reversing wheel 8 usefulness.

Below in conjunction with accompanying drawing architectural feature of the present utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a gear transmission structure scheme drawing of the present utility model.

Various parts in the accompanying drawing are common mechanical parts, can buy, and also can make its easy enforcement simple in structure by oneself.

The utility model is according to said structure feature and Fig. 1, shown in Figure 2, be installed on the bicycle, when moving on the road of bicycle in injustice, make human body produce vibration, center of gravity constantly moves up and down, when center of gravity moves down, human body presses vehicle seat standpipe 14 downwards, and the tooth bar 13 that is connected vehicle seat standpipe end is also moved down, by the gear transmission structure of Fig. 2 as can be known, tooth bar 13 moves down the gear 11 that can drive on the adapter shaft 12 to anticlockwise motion, sprocket wheel 7 on the adapter shaft 12 is also to anticlockwise motion simultaneously, chain by sprocket wheel 7 sends driving force the flywheel 10 of bicycle rear to again, drives bicycle and advances, and plays the power-assisted effect

In above-mentioned course of action, when human body presses vehicle seat standpipe 14 downwards, also downward simultaneously compression spring 5 when spring 5 upwards rebounds, moves up vehicle seat standpipe 14, and according to above-mentioned opposite sense of motion driving flywheel 9, because flywheel 9 is opposite with the installation direction of flywheel 10, thus bicycle is advanced, no matter sprocket wheel 7 is conter clockwises or clockwise rotates, total energy is given propulsive effort of bicycle, to reach the power-assisted effect.

The bicycle that this servo-unit is installed is adapted at travelling on the rural dirt road, because the uneven top of road ripple is also continuous, vehicle seat standpipe 14 also can constantly move up and down, and the work that this servo-unit is not stopped reaches power-assisted purpose, and does not need to establish in addition energy source device.

Claims

A kind of Accelarators for bicycles, by adapter shaft, gear, guide pin bushing, spring, outer tube, wheel disc, support reversing wheel, flywheel, and tooth bar is formed, the cross support arm that it is characterized in that welding one band guide pin bushing below the upright beam of bicycle rack interior, the upper end of outer tube is fixing by the fork that retreads of fastener and vehicle frame, the lower end of outer tube penetrates in the guide pin bushing and fixes with jackscrew, there is slotted hole the both sides, upper end of outer tube, there is a through hole upper end of vehicle seat standpipe, the vehicle seat standpipe inserts in the outer tube, pass the upper end through hole of vehicle seat standpipe from the slotted hole of outer tube with pin, at the lower end of vehicle seat standpipe welding tooth bar, spring housing is on outer tube, its lower end contacts with the end face of guide pin bushing, touch with the lateral pin nail joint of vehicle seat standpipe upper end its upper end, on the back chain stay of bicycle rack, adorn two pairs of support brackets, big miniature gears is the different integral piece of diameter, be contained in by adapter shaft on a pair of support bracket of back chain stay, make the engagement of miniature gears and tooth bar, after another gear is contained in by adapter shaft on the chain stay another is on the support bracket, and mesh with big gear wheel, end at adapter shaft also is equipped with wheel disc simultaneously, two flywheels are the identical integral piece of diameter, be contained on the rear axle housing of bicycle, weld the bracing frame of a tape spool in bicycle post-tensioning fork bottom, with nut and packing ring will support reversing wheel be contained in this bracing frame spool on, wheel disc, flywheel and support reversing wheel connect with a chain.