CN2204265Y - Bicycle for three persons - Google Patents

Abstract

The utility model relates to a bicycle for three persons, which comprises a frame, wheels, a handle bar and saddles. The utility model is characterized in that the frame is double-beam integration composed of two symmetrical U-shaped beams and at least two cross beams; the rear part of the double-beam integration is provided with the high saddle; the middle is provided with the low saddle; the front is provided with a child-seat; the shaft leather of a rear wheel is lengthened, and both ends are symmetrically provided with bearings installed at the lower parts of the U-shaped beams; the right fly wheel and a left and a right crank pedals at the outer end of the hub at a right side are installed at both ends of a same rear wheel shaft. The utility model has the advantages of firmness, reliability, labor saving and slow speed, and is suitable for the older; the utility model making use of a spare booster can run in a high speed, can be used by two persons or three persons for riding and sitting, and is an ideal vehicle for family travel and shopping.

Description

Bicycle for three persons

The utility model belongs to the rickshaw category, and it is the bicycle that can take two to three people.

Commercially available bicycle all is the single seat of riding now, if carry children, saddle will be installed in addition on vehicle frame.Two adults take a single bicycle, and are then promptly not attractive in appearance dangerous again.According to the existing living standard of China, need a kind of rickshaw of sitting trip of riding simultaneously for two, three people.

The purpose of this utility model provides a kind of new bicycle, and its firm, safety can be ridden and be sat two to three people.

The purpose of this utility model is achieved in that it comprises vehicle frame, wheel, handlebar, saddle, feature is, its vehicle frame is by the U-shaped beam of two symmetries and at least two whole twin beams of crossbeam be combined into, central authorities are provided with high saddle at last twin beams rear portion, at preceding twin beams middle part adapter sleeve is arranged, between adapter sleeve and high saddle low saddle is arranged, there is child seat the adapter sleeve front;

Its hind axle skin symmetry lengthening, the two ends symmetry has bearing installation below the U-shaped beam; A right flywheel is installed in right-hand axis skin outer end, and left and right crank pedal and flywheel are installed in same hind axle two ends, and right crank and right flywheel structure are integral;

A pedal flywheel also can left and rightly respectively be installed in its hind axle skin outer end, in the bottom of high saddle pillar, servo-unit and aiutage is installed, and fuel tank places high saddle below, becomes the three-person bicycle that two kinds of power are arranged.

Its Foldable child seat is positioned on the preceding bearing beam of adapter sleeve; And be loaded in the big bicycle basket;

Its child seat also can be positioned on the last twin beams of elongation; Its child seat also can be positioned on the preceding twin beams, and foot-operated to dividing into from whole twin beams front end;

Its front and back wheel can be big or small identical, or pre-small post-large, and all size is arranged.

The utility model has the advantages that: because whole twin beams is arranged, it is firm reliable; Because pedal is installed on the back axle, directly drives flywheel, it is laborsaving, slow, is fit to the elderly and uses; Owing to have a servo-unit, but it also at high speed advance; Because three saddles are arranged, can ride and sit two to three people, be the desirable vehicle that the one family goes on a tour and does shopping.

Details of the present utility model is provided by following examples and accompanying drawing thereof:

Fig. 1 is first kind of embodiment scheme drawing of the present utility model;

Fig. 2 is a whole twin beams birds-eye view among Fig. 1;

Fig. 3 is a whole twin beams lateral plan among Fig. 1;

Fig. 4 is a hind axle structural representation among Fig. 1;

Fig. 5 is a folding children's seat scheme drawing among Fig. 1;

Fig. 6 is second kind of embodiment scheme drawing of the present utility model;

Fig. 7 is a hind axle structure scheme drawing among Fig. 6;

Fig. 8 is the third embodiment scheme drawing of the present utility model;

Fig. 9 is the 4th a kind of embodiment scheme drawing of the present utility model;

Figure 10 is the 5th a kind of embodiment scheme drawing of the present utility model;

Figure 11 is a whole twin beams birds-eye view among Figure 10;

Figure 12 is a whole twin beams lateral plan among Figure 10;

Figure 13 is the third form of whole twin beams;

1-5 with reference to the accompanying drawings, the utility model comprises handlebar 10, and wheel 1, its vehicle frame are the whole twin beams that 3,17 symmetric junctions of two crossbeams of two U-shaped beams, 2 usefulness form, and the U-shaped beam is made of the 25# angle steel.Whole twin beams is in crossbeam 3, part 17 or more, and the part of calling between twin beams 20, two crossbeams is twin beams 22 down, and the part before the front cross rail 17 by tilting to level, is called preceding twin beams 21.The 4th, back handle.

Saddle of the present utility model has three places, and high saddle 6 is contained in the high saddle pillar 5, and high saddle pillar 5 is steel pipes, its top is welded in two last twin beams 20 terminations of closing up, its middle part is welded in the mid point of front cross rail 17, and the bottom reaches out between the trailing wheel, and low saddle foot-driven lever 16 is housed.Low saddle 7, support by low saddle pillar 8, it is the steel pipe of a bending, the circular arc place is attached at the middle part of high saddle pillar, another top of steel pipe is connected the back of adapter sleeve 15, between two angle steel of twin beams 21, its top entrucking was 10 before adapter sleeve 15 was welded in, and front fork 14 is installed in the bottom, at low saddle pillar 8 and the in addition low saddle handle 9 in the angle of adapter sleeve 15, in the front of adapter sleeve 15 a child seat bearing beam 11 is arranged, rotating sleeve pipe 29 is housed, fixed sleeve pipe 30 with sleeve pipe 29 direction that meets at right angles at these beam two ends, there is U-shaped pipe 12 to pass sleeve pipe 30, Here it is child seat during use keeps flat U-shaped pipe 12, its tail end withstand on low saddle handle 9 below.Not the time spent, U-shaped pipe 12 can be transferred to or be folding.The big bicycle basket 13 of child seat outer cover, article can be adorned in the top of twin beams bumper/spoiler 19 before it was supported on, also can be as the guardrail of children's chairs.

Its axletree 27 and axle skin 26 general axletree lengthenings, wheel set is contained in down the appropriate location of twin beams 12 with bearing box 25 and screw 24, the right-hand member dress flywheel 18 of axle skin 26, the left and right sides two ends of axle is respectively adorned pedal crank assemblies 28, the teeth place of corresponding flywheel 18 on right crank, there is pin 23 to pass between cog, to drive flywheel 18 motions.

6-7 with reference to the accompanying drawings, the present embodiment principal character is identical with precedent, but it has increased servo-unit 31 and freeing pipe 32, and be installed in down the below of twin beams 22, and low for this reason saddle pedal 16 positions slightly change, and fuel tank 34 places under the high saddle.The rear wheel assembly has increased left flywheel 18, and it links to each other with chain 33 with servo-unit 31 main shafts.So just having formed to have manpower and two kinds of power three-person bicycles of machine power, can loading or manned, and can be fast or at a slow speed.

With reference to the accompanying drawings 8, present embodiment front and rear wheel specification difference, it can be front-wheel 18# trailing wheel 20#, 22#, 24#, 26#, 28#; Or front-wheel 20#, models such as trailing wheel 22#, 24#, 26#, 28#.

With reference to the accompanying drawings 9, the present embodiment trailing wheel is greater than front-wheel, and last twin beams extends forward, and three saddles are all supported by last twin beams.

With reference to the accompanying drawings 10,11,12, present embodiment is the front stall formula, its last twin beams begins into toroidal from low saddle and stretches out forward, supports two saddles, and as the handrail of front saddle, before twin beams become the dustpan shape, on establish front saddle, and be equipped with foot-operated downwards from whole twin beams front end.This routine trailing wheel is bigger, gets 28#, and front-wheel is got 18#.

With reference to the accompanying drawings 13, this embodiment is the whole twin beams before shape is different from, and its preceding twin beams begins to open to both sides from after cross member, and open angle is adjusted as required, and therefore, its front and back crossbeam is not isometric, and this example has three crossbeams.

Claims (6)

1, three-person bicycle, it comprises vehicle frame, wheel, handlebar, saddle, it is characterized in that, its vehicle frame is by the U-shaped beam of two symmetries and at least two whole twin beams of crossbeam be combined into, central authorities are provided with high saddle at last twin beams rear portion, at preceding twin beams middle part adapter sleeve is arranged, between adapter sleeve and high saddle low saddle is arranged, there is child seat the adapter sleeve front;

Its hind axle skin symmetry lengthening, the two ends symmetry has bearing installation below the U-shaped beam; A right flywheel is installed in right-hand axis skin outer end, and left and right crank pedal and flywheel are installed in same hind axle two ends, and right crank and right flywheel structure are integral;

2, three-person bicycle according to claim 1 is characterized in that, a pedal flywheel also can left and rightly respectively be installed in its hind axle skin outer end, in the bottom of high saddle pillar, servo-unit and aiutage is installed, and servo-unit links with chain and left flywheel.

According to claim 1,2 described three-person bicycles, it is characterized in that 3, its Foldable child seat is positioned on the preceding bearing beam of adapter sleeve; And be loaded in the big bicycle basket;

According to claim 1,2 described three-person bicycles, it is characterized in that 4, its child seat also can be positioned on the last twin beams of elongation;

According to claim 1,2 described three-person bicycles, it is characterized in that 5, its child seat also can be positioned on the preceding twin beams, and foot-operated to dividing into from whole twin beams front end;

6, according to claim 1,2 described three-person bicycles, it is characterized in that its front and back wheel can be big or small identical, or pre-small post-large.

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