CN2471680Y - Light bicycle - Google Patents

Abstract

The utility model relates to a light bicycle, comprising a steering handle bar, a front and a rear wheel, a seat, a tripod, two foot pedals, a control wire and a copper tube, wherein a spring, a hex angle plate, a three tooth angle plate, a hex groove angle and an active pin are arranged in the copper tube. The utility model is characterized in that a plurality of gear sets are positioned on the rear wheel shaft and the copper tube and are meshed with each other, and the tooth number of each gear set is the same; the pin head of the active pin inside the copper tube can be manipulated to insert into the gear groove of different gear set by the control wire to change speed conveniently; the foot pedals and the seat are positioned on the rear wheel shaft, the transmission force of feet stepping on the foot pedal is acted directly on the rear wheel, and the weight center of the rider is also positioned on the rear wheel, thus the utility model has the advantages of light weight and effort saving while in riding.

Description

Brisk bicycle

The utility model relates to a kind of bicycle.

Existing bicycle includes tap, front-wheel, trailing wheel, seat cushion, spider, foot-operated etc.Its lock with front and back wheel is controlled the speed of a motor vehicle a little.Derailleur is also arranged now, as mountain bike etc.The foot-operated of above-mentioned car all is located on the middle car beam of front and back wheel.Because foot-operated being located between front and back wheel, the gear on the hind axle is connected by chain with gear on the pedal spindle, and pin is stepped on foot-operated driving force need and be passed to trailing wheel through chain drive like this, causes the loss of portion of energy, and the possibility of chain is fallen in existence in addition.

The purpose of this utility model aims to provide a kind of energy and transfers fast, jogging speed, rides free and relaxed, the brisk bicycle in labour-saving.

The implementation of the utility model purpose is that brisk bicycle comprises front-wheel 1, tap 2, trailing wheel 5, vehicle seat 6, spider 3, foot-operated 12.Vehicle seat is positioned on the spider, and foot-operated switching is on hind axle.Flywheel 15, gear 14,13 are housed on the hind axle from inside to outside successively, and the gear 10,9,8 of forming change-speed box is contained on the copper pipe 11, and meshes with gear 13,14, flywheel 15 respectively, and the number of teeth of every group of engaging gear equates.Copper pipe is connected with ball bearing of main shaft with 3 of spiders, and spring, six poppyhead angles, San Yajiao, six groove angles, the pin of living are housed in the copper pipe.The connecting rod 16 at six poppyhead angles passes three tooth angles 19, the centre hole of the pin 18 of living, and spring 23 is enclosed within on the connecting rod 16, and top of connecting rod connects control line 4.The copper pipe wall has pin 17 cotter way that move 22 for the pin of living, and the pin head extend into the teeth groove of gear 10 or 9 from cotter way.The angle at six poppyhead angles 20 extend in the groove of six groove angles 21.

The utility model is described in detail in detail with reference to the accompanying drawings.

Fig. 1 the utility model structural representation

One of Fig. 2 control mechanism structural representation

Two of Fig. 3 control mechanism structural representation

With reference to accompanying drawing 1, foot-operated be connected on the hind axle by ball bearing of main shaft, make the driving force of foot-treadle directly act on trailing wheel, reduced the loss of chain gear, make and ride laborsavingly, also reduced the possibility that problems such as falling chain occurs.Vehicle seat is positioned on the tripod (3) at hind axle rear, and the spider lower end is contained on the hind axle by ball bearing of main shaft, the person's of riding center of gravity can be moved on to like this before and after the hind axle, makes the person of riding free and relaxed, laborsaving, helps sailing before the bicycle.

With reference to Fig. 2,3, the utility model is provided with control mechanism, and control mechanism is by being contained in six poppyhead angles in the copper pipe, spring etc., and is contained in the gear 10,9,8 on the copper pipe, and the gear 13,14, flywheel 15 and the control line 4 that are contained on the hind axle constitute.Copper pipe 11 collar extensions have capping 24.

The control principle of control mechanism is to draw control line 4, drivening rod 16, then drive six poppyhead angles 20, three tooth angles 19, the pin 18 of living outwards moves, the pin head of the pin of living slides in cotter way 22, spring 23 is compressed, when length of spring compressed arrived certain position, the pin of living was no longer mobile.This moment, six poppyhead angles were rotated San Yajiao slightly, made three angle teeth at three tooth angles perform the preparation of another groove angle that enters six poppyhead angles.Put down control line, six poppyhead angle get out of hand power, under the recoil of spring application force, move in live pin, the three tooth angles, perform the angle tooth that moves the three tooth angles of preparing and can fall in the draw-in groove 25 of six groove angle front ends, three tooth angles, the pin of living are fixed, sell (see figure 2) in the teeth groove that extend into gear 10, gear 10 promptly is stuck, and makes 10,13 groups of rotations of gear, 15 groups of gears 8, flywheel are along with rotation, and gear freely rotates for 9,14 groups.

Draw control line again, with last identical, connecting rod, six poppyhead angles, San Yajiao, the pin of living outwards move, and the pin head slides in cotter way, and spring is compressed, and is compressed to certain position, and the pin of living is no longer mobile.This moment, six poppyhead angles were rotated San Yajiao slightly, made three angle teeth at three tooth angles perform the preparation that enters another groove angle.Loosen control line, six poppyhead angle get out of hand power, under the recoil of spring application force, move in pin alive, the three tooth angles, perform the following groove angle that the angle tooth that moves the three tooth angles of preparing enters six groove angles, pin alive also moves inward, the pin head is withdrawed from from the teeth groove of gear 10 and fall into the teeth groove (see figure 3) of gear 9, make 9,14 groups of rotations of gear, 15 groups of gears 8, flywheel are along with rotation, and gear freely rotates for 10,13 groups.

As can be seen from Fig. 1, gear 13 is taken turns radius＞gear 14 and is taken turns radius, and gear 10,13 is identical with the gear sum of gear 9,14, so the utility model has the high speed of Fig. 2 and the lower-speed state of Fig. 3.

The conveniently replaced speed of a motor vehicle of the utility model is ridden free and relaxed, laborsaving.

Claims (3)

1, brisk bicycle, comprise front-wheel (1), tap (2), trailing wheel (5), vehicle seat (6), spider (3), foot-operated (12), vehicle seat is positioned on the spider, it is characterized in that foot-operated switching is on hind axle, flywheel (15) is housed on the hind axle from inside to outside successively, gear (14), (13), the gear (10) of forming change-speed box, (9), (8) be contained on the copper pipe (11), and respectively with gear (13), (14), flywheel (15) engagement, the number of teeth of every group of engaging gear equates, be connected with ball bearing of main shaft between copper pipe and spider (3), spring is housed in the copper pipe, six poppyhead angles, three tooth angles, six groove angles, pin alive, the connecting rod at six poppyhead angles (16) passes San Yajiao (19), the centre hole of pin alive (18), spring (23) is enclosed within on the connecting rod (16), top of connecting rod connects control line (4), the copper pipe wall has the mobile cotter way (22) of pin head (17) for the pin of living, and the pin head extend into the teeth groove of gear (10) or (9) from cotter way, and the angle at six poppyhead angles (20) extend in the groove of six groove angles (21).

2, bicycle according to claim 1 is characterized in that vehicle seat is positioned on the spider at hind axle rear (3), and the spider lower end is contained on the hind axle by ball bearing of main shaft.

3, bicycle according to claim 1 is characterized in that copper pipe (11) collar extension has capping (24).

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