CN1087864A - Two-wheel car - Google Patents

Abstract

The two-wheel car of forming by a main car frame, be hung with two wheels on the main car frame rotationally, one of them wheel is driven and another wheel can turn to respect to main car frame by a subframe, except a rotating turning member, a saddle type seat part also is housed on the main car frame, the subframe that wherein is used for steerable vehicle wheels be positioned at seat part below, take turns the below that is positioned at turning member and be driven, and between turning member and subframe, coupling mechanism is housed, therefore because the feasible possible direct drive front-wheel of the exchange of wheel effect, thereby two distance between the wheel can greatly reduce, so reduced bicycle length, kept big relatively wheel diameter simultaneously.

Description

Two-wheel car

The present invention relates to a kind of two-wheel car, this two-wheel car is made up of a main car frame, be hung with two wheels on it rotationally, one of them wheel is driven and another wheel can turn to respect to main car frame by a subframe, except a rotating turning member, a saddle type seat part is housed also on the main car frame.

The two-wheel car of this being also referred to as " bicycle " is widely known by the people in many different examples, and is mainly used in and transports a people, and the effort of this person by the individual utilizes pedal mechanism to drive in two wheels one, normally trailing wheel.For making the cyclist keep balance and controlling the direction of car, another wheel is connected on the turning member.Also may equip a driving engine for two-wheel car.As auxiliary engine, this driving engine can, also can not be arranged in the position of contiguous pedal mechanism.Pedal mechanism comprises a chain-driving, and sprocket wheel is installed between front-wheel and the trailing wheel before the chain-drive, and wherein chain is guided the sprocket wheel of rear wheel into.The shortcoming of this car is that it has big relatively size, and therefore is difficult to transport in the case space in the row of roadlice or similar vehicles.So-called " Collapsible bicycle " has been well-known, however the shortcoming of this car be since wheel cause bad direction control stiffness for a short time, make ride uncomfortable.Have under the situation of high-wheeled Collapsible bicycle, wheel must be pulled down from main car frame usually, and this will spend a large amount of work.

Shortcoming that the objective of the invention is to avoid above-mentioned and the subframe that provides a kind of two-wheel car, its characteristics to be to be used for steerable vehicle wheels for this purpose are positioned at the below of seat part, and a coupling mechanism is housed between turning member and subframe.

Since the function of conversion wheel, just possible direct drive front-wheel, thus shorten two distances between the wheel greatly, so reduce the length of bicycle, keep big relatively wheel diameter simultaneously.

In the further improvement of this bicycle, suggestion provides a pedal mechanism that is used to drive for " fixing " front-wheel.In a particular example, this pedal mechanism is equipped with a bar, and a side of bar hingedly is contained in the main car frame, and opposite side is loaded onto a pedal element.Bar strip makes and pedal parts or " pedal " may be placed place near front-wheel, therefore can realize comfortable posture by bike, that is to say that the user can easily prop up in ground with pin when stopping, although when seat part is arranged at low relatively position, in fact knee is still straight.

For good power transmission, the lever apparatus that the present invention proposes provides a special shape gear, it and a miniature gears combined action that is installed in the drive wheel rotating shaft, and an end of bar is contained on the main car frame slidably here.

For bicycle can be used as the device of easy transportation, the further proposition of the present invention hingedly connects turning member and main car frame so that therefore folding, and hingedly connects seat part.Like this, just obtained a kind of very simple portable bicycle device.

Further illustrated in the pattern description of a series of application examples that above-mentioned and further feature of the present invention will be below.In the drawings:

What Fig. 1 represented is the upstanding side view of first application example of the vehicle according to the present invention,

Fig. 2 and 3 has represented overlooking and front elevation of vehicle among Fig. 1 respectively,

Figure 4 and 5 have been represented overlook power and the upstanding side view of vehicle under folded situation among Fig. 1 respectively,

Fig. 6 has represented to be used for the enlarged side view of the possible pedal mechanism that is driven front-wheel of Fig. 1 vehicle,

Fig. 7,8 and 9 represented in each case, corresponding to the lateral plan of the optional application example of pedal mechanism among Fig. 6,

Figure 10 represented with respect among Fig. 1 according to the present invention the optional upstanding side view of using real row of vehicle,

Figure 11 is expression " common " bicycle and according to the upstanding side view that concerns between the bicycle of the present invention,

Figure 12 a, b are the diagrammatic side view that is used for according to the pedal mechanism of the 4th example bicycle,

Figure 13 a, b, c and d are the 5th the example lateral plans that is applicable to the pedal mechanism that drives bicycle.

1 represent mainframe with numeral among Fig. 1, shown in example in mainframe made by steel plate that bends to suitable shape and the various part that can weld mutually.Though the concrete formation of mainframe may be different, shown mainframe comprises a first 2, and its transversal surface is " U " shape, shows as polygon in the lateral plan, and have a support arm that stretches out forward 3 in its underpart, and have a support arm that stretches out 4 downwards in the place ahead, top.These two support arms connect mutually at a certain angle.The rotating shaft 6 of fixing front-wheel is installed on the inclination intersection 5 of two support arms.This front-wheel 7 be one have common wheel rim, airtyred three spoke wheels are equipped with in the outside.Like this, the wheel rim that has tire just can rotate in the part 2 of similar framework, between support arm 3 and 4.

Main car frame further has the back rest 8 of a bending, and its free tail end 8 ' along continuous straight runs stretches.Insert this part 8 ' be a swivel pin 9, this pin part 8 ' in be installed on the bearing (not shown), and its bottom have with trailing wheel 11 on the connecting device of rotating shaft 10.Trailing wheel 11 is identical with wheel 7.

Have side arm 13 as the subframe of back vent 12 in position, see Fig. 2 near swivel pin 9, push away/pull bar 14 hingedly joins thereon.These will further be set forth in the back.

A pivot pin 15 is equipped with in the upper end of the horizontal part of main car frame part 2, and the carriage 16 of turning member 17 is contained on the pivot pin rotationally.Push away/front end of pull bar 14 and the support arm 18 of carriage 16 are hinged.Notice in lateral plan, push away/pull bar comprise a reclinate part 14 ', and cantilever is also 14 " locate to edgewise bend, see Fig. 2, make hinge-point be positioned at the left-hand side of car with side arm 13, and with the hinged right-hand side that is positioned at of support arm 18.

This structure makes presses arrow P among Fig. 2 when handlebar ₁When direction was rotated, trailing wheel was by arrow P ₂Direction is rotated.

Here, turning member 17 is formed to upper boom 20 by two, and each bar links by pivot 21 and carriage 16.In the example shown, pivot 21 makes each arm 20 to rotate around this axle 21, and can be in horizontal direction along main car frame 1 when the folding position that these will further be set forth from the horizontal by 45.Two upper arm 20 of turning member can utilize screw mechanism 22 to interconnect in the upper end.This screw mechanism is made up of screw-casing 23 and thread rod 24, and screw-casing can manually rotate by tooth cincture 25.By thread rod 24 being inserted screw-casing 23 and utilizing tooth cincture 25 to rotate screw-casing 23, this connection can engage or decontrol.The part 8 that is inclined upwardly of the part 8 of main car frame " is equipped with the crown plate 30 with slotted eye 31.The pin 32 of the carriage 33 of fixed seating parts 34 inserts this slotted eye.Have a slotted eye on the carriage 33, this hole and tightening screw 35 combineds action in the part 8 of main car frame ' on so that in the position shown in the figure 1 with seat part 34 lockings.

In example shown in Figure 1, front-wheel 7 drives by a pedal mechanism 40, and this pedal mechanism will be further elaborated with reference to figure 6,7 and 8.Pedal mechanism has the pedal element, and promptly pedal 41, and it can be arranged on and make the maneuverable position of bicyclist.

Above-described vehicle can use as follows.On the go, the shape of this vehicle as shown in Figure 1, cyclist supposition is 34 position at the seat, both hands are placed on the handgrip of turning member 17, both feet are placed on the pedal element 41.Posture is the same by bike with routine for this,, depends on selected mechanism here, and the pedal element carries out mutual or rotatablely moves.Because the distance of pedal element 41 relative seat parts 34 when end position is the same with ordinary bicycle, be best to the transmission of power of pedal 41.Saddle still can be placed on low relatively position so that when resting guard, and the cyclist can easily be propped up in ground with pin.

If the user wishes bicycle is carried as dingus, he only need unclamp tightening screw 35 so, and the carriage 33 that therefore has a seat member 34 can fold into the position according to Fig. 5 forward, and at this moment seat member 34 is placed in the sweep of main car frame.Handlebar can loosen at 22 places then, and therefore two steering tubes 20 can forward position shown in Figure 5 to around axle 21.So just obtain one, suppose that at this moment wheel diameter is 50cm, so the length of this device is no more than 1m carrying very little device, and highly also less than this size.

If the plastics manufacturing of main car frame and wheel, weight also can greatly reduce.

If desired, pedal element 41 can adopt folding form to make them to stretch out along pedal mechanism 40 equally, sees Fig. 4.

The variation of size as shown in figure 11, wherein the bicycle according to bicycle of the present invention and the common size of representative type compares.When the ultimate range between the saddle and the pedal of stretching out remained unchanged, saddle can be placed on a lower position, had kept the identical height that turns to simultaneously, saw the position of representing with line a and b respectively among Figure 11.

Below with reference to Fig. 6,7,8 and 9, special pedal mechanism according to the present invention is described.

41(is not shown for the pedal element) be rotatably fixed in the bearing hole on the bar 51.The other end of bar is rotatably mounted on the support 52, and support is slidably mounted in the slotted eye 53 of main car frame part 2.

Bar 51 is tabular, has cut a waist shaped hole 54 in the middle.In this waist shaped hole, be equipped with by support plate 56 and bar 51 bonded assembly special shape gears.The wheel rim of special shape gear is parallel to the interior week of waist shaped hole 54, make be fixed on 7 of the wheels miniature gears 6 can closure, on the track between special shape gear 55 and the waist shaped hole 54, pass.

By pressing arrow P with pin ₃The path direction of indication moves the pedal element relative to bearing hole 50, and special shape gear drives pinion rotation, rotates thereby drive wheel 7.

Notice that between this moving period, support 52 is crank motion in slotted eye 53.

Because this structural reason, the not only available leg that stretches of cyclist is pedaled and is ridden, and also can realize preferably the power transmission to wheel 7, thereby it is greatly easy to ride.

Fig. 7 has represented an optional example, and wherein similar components is represented with similar reference number.Have waist shaped hole 54 on the bar, within it side have one with the miniature gears 6 gears in mesh wheel rims of wheel 7.The conversion of this gear train transmission provides a kind of pedal element path of motion, and this makes bearing hole 50 move in the opposite direction equally, sees arrow P ₄Yet the motion that all guarantees the pedal element in last two examples is up and down.

On the other hand, Fig. 8 has represented such example, and the circular element 57 as the pedal lever wherein all is housed in the both sides of wheel 7, have above one be contained in the circular trough 54, with the gear ring of the pinion of wheel 7.Circular element 57 utilizes support plate 58 to be connected with center bearing pilot bearing 59, and center bearing pilot bearing is by part 2 supports of main car frame.

On the hole of the circular element 57 by the pedal element being contained in the bicycle left-hand side, and another pedal element is contained in the bicycle right-hand side another circular element 57 on the face, along track P ₅Rotate two pedal elements and just can realize driving wheel 7.Here the track of pedal element is circular.

Fig. 9 has represented an example of pedal mechanism 40, and wherein crank can be adjusted.Consistent with above-mentioned example according to Fig. 6 and 7, the middle car end and the support 52 of tabular bar 51 are hinged, and support is contained in the notch 53 of main car frame wheel 2 slidably.Pedal element 41 directly is not fixed to an end of bar 51, but is fixed on the support plate 60 separately, and support plate 60 can slide in the guide rail 61 that surrounds its two vertical limits.This guide rail is the part of plate 51.One in the two guide rail support plates has the groove 62 that is used to lay cam 63.Cam 63 is installed on the bar 64 that is rotatably connected at 65 places with support plate 60.The free end of bar 64 is useful on the pressure surface 66 of pin operation, and wherein compression spring 67 is installed on the limit, opposite of bar 64, and spring is subjected to the supporting of support plate 60 at 68 places.

The adjustment of desirable crank is undertaken by following method.By by the direction presses lever 64 opposite with spring 67 effect, cam 63 just withdraws from from groove 62, so support plate 60 can slide to the direction of the other end 52 of bar 51, and cam 63 enters another groove 62 of guide rail 61, has so just entered one of position.Therefore, the distance between the hinge-point 52 of pedal element 41 and bar 51 can be adjusted on request, thereby can obtain bigger or less crank, so just can cause that the power that is delivered to miniature gears is less or bigger respectively.

Figure 10 has represented an example, and the subframe 12 of the trailing wheel 11 that wherein can turn to is arranged in non-perpendicular position.Here pivot be arranged to main car frame part 8 directions, be inclined upwardly, relative vertical position, swivel pin 9 has identical angle with recurvate subframe 12.This structure makes the rear wheel can autotracking, further like this riding of improving bicycle.Also make baggage rack increase the space in addition.The seat member that has folding backrest 71 is connected with main car frame by slide bar 72.

Figure 12 has represented the 4th example of pedal mechanism, has only shown the main portion of pedal mechanism among the figure.This pedal mechanism can be applicable in as shown in Figure 1 the f-w-d or in the chain/chain sprocket drive that is applied to be widely known by the people.

For aforementioned each example, the key distinction is that pedal mechanism 41 moves along circular trace 80, rather than oval as described in Figure 6.Each pedal element has a crank 81, rotates around central axis 82, and the center shaft 83 that has gear 84 is with respect to central axis 82 same axle mountings.

Each pedal element 41 further has the bar 51 that has quadrant gear part 85.One end of bar 51 and adjacent quadrant gear 85 are hinged around the pivot center 86 of pedal element 41.

The other end of bar 51 has a sliding pin 87, and this end is directed in the oblong aperture of fixing director element 88.

Two positions of Figure 12 a and 12b have clearly illustrated that how pedal mechanism works.When around central axis 82 when circuit orbit 80 rotates pedal elements 41, an end 86 of bar 51 will rotate along identical circuit orbit.The other end 87 is along the straight rail guiding of director element 88, and institute is so that quadrant gear 85 is pressed arrow P ₆ Rotate pin 86 of direction rotates, and gear 84 is by arrow P ₇Rotate.It will be appreciated that the rotating speed of the rotating speed of gear 84 greater than pedal crank 81.

When top-right pedal 41 among Figure 12 b turned over half cycle and reach extreme lower position (seeing the dotted line among Figure 12 a), quadrant gear and gear 84 broke away from, and meanwhile another quadrant gear will begin and this gear mesh.Therefore can obtain the continuous transmission of gear 84 by rotation pedal 41.

Notice that in this pedal mechanism the power that the cycling people acts on the pedal element 41 passes to gear 84 in higher efficiency, thereby obtain the driver train of a greater efficiency.Therefore, compare with widely used pedal crank mechanism in the common chain-driving, when pedal is applied identical power, the cyclist will move sooner.

Yet the example structure compared of the example of Figure 13 and Figure 12 is compacter.

Its key distinction be each quadrant gear 85 have separately engaging gear 84 and 84 ', the mutual coaxial centering of these two gears also is rotatably mounted them around same axis 82.

In addition, by sliding pin 87, the targeting part ground of the other end of bar 51 along straight line 88 ', and partly depend on circuit orbit 89.

At last, arranging a hill holder, and installing like this and make that two of quadrant gear are one of extreme and will contact with above-mentioned hill holder to prevent further rotation in one direction near the circuit orbit place of pedal element 41.

Will know clearly hill holder 90 and guide rail 88 ' and 89 are fixedly parts of vehicle frame of bicycle.

According to Figure 13, the principle of work of the pedal mechanism that this is compact is as follows:

See Figure 13 a, upper fan generating gear 85 is in the starting position of the effective travel of rotation, wherein in order to press arrow P ₇Direction arm revolving gear 84, quadrant gear 85 and gear 84 engagements.According to the effect similar to Figure 12, the other end 87 of bar 51 will be along straight rail 88 ' move.

Still with the bottom quadrant gear of gear 84 ' be meshed according to arrow P ₅Rotate, other end 87 of coefficient bar 51 will move along circuit orbit 89 between this moving period.This position such as Figure 13 b, 13c and 13d are represented.

Figure 13 d has represented such moment, this moment two bars 51 other end a side broken away from straight shape track 88 ', and this moment another bar will be positioned at straight shape track begin the place, thereby enter described position as Figure 13 a, notice that the quadrant gear that dots becomes the driving quadrant gear now, and the quadrant gear that solid line is represented becomes and returns quadrant gear.

Bar 51 will be can surpass the circuit orbit 80 of pedal element 41 as can be seen from Figure 13, thereby has obtained to compare with other structure very compact design.

Therefore might easily the pedal mechanism according to Figure 13 be joined in the bicycle according to Fig. 1, so in any case pedal 41 all can be within the excircle of the front-wheel shown in the lateral plan.

Pedal mechanism described above do not limit to be used for such as Fig. 1 the minibike on ground.Also gear 84 can be connected with a chain-driving, link on the sprocket wheel of back-wheel drive in the ordinary bicycle.

The invention is not restricted to above-mentioned example.

Claims (14)

1, the two-wheel car of forming by a main car frame, be hung with two wheels on the main car frame rotationally, one of them wheel is driven and another wheel can turn to respect to main car frame by a subframe, except a rotating turning member, a saddle type seat part also is housed on the main car frame, this two-wheel car be characterised in that the subframe that is used for steerable vehicle wheels be positioned at seat part below, and be driven the below that wheel is positioned at turning member, wherein between turning member and subframe, coupling mechanism is housed.

2, according to the car of claim 1, it is characterized in that coupling mechanism push away with turning member and subframe pivotally attached by one/pull bar forms.

3,, it is characterized in that being driven wheel and have a pedal mechanism according to the car of claim 1 or 2.

4, according to the car of claim 3, it is characterized in that pedal mechanism is made up of a bar, a side of bar is hinged on the main car frame and opposite side is equipped with a pedal element.

5, the car of forming by a main car frame, have two wheels that hang rotationally on the main car frame at least, one of them wheel is driven and another wheel can turn to respect to main car frame by a subframe, except a rotating turning member, a saddle type seat part also is housed on the main car frame, and have one be driven the coefficient pedal mechanism of wheel, this car is characterised in that pedal mechanism has a bar, there is one to be driven the special shape gear that the miniature gears on the rotation shaft of wheel is meshed with being installed on the bar, one end of its king-rod is directed to reciprocating with respect to main car frame, and the other end of bar is equipped with a pedal element.

6, according to the car of claim 5, it is characterized in that pedal or pedal element have a crank, to install around the co-rotation axis rotationally, the other end and the crank of bar are hinged.

7,, it is characterized in that the end parts ground of bar leads in a straight line guide rail, and partly in circular guideway, lead according to the car of claim 5 and 6.

8, according to the car of claim 7, it is characterized in that the special shape gear of a pedal element and the special shape gear of another pedal element all permanently are meshed with a gear, this gear is coaxial with above-mentioned co-rotation axis.

9,, it is characterized in that the crank adjustable length of pedal mechanism according to the car of claim 5-8.

10,, it is characterized in that pedal is connected on the bar in order inwardly to fold according to the car of any one claim among the claim 1-9.

11, according to the car of any one claim in the aforesaid right requirement, it is characterized in that the subframe of steered wheel is connected on the main car frame around a non-perpendicular turning cylinder.

12, according to the car of any one claim in the aforesaid right requirement, it is characterized in that turning member comprises a carriage, carriage is connected with main car frame rotationally, and at least one deflecting bar hingedly is housed thereon.

13,, it is characterized in that seat part is connected on the main car frame in order inwardly to fold according to the car of any one claim in the aforesaid right requirement.

14,, it is characterized in that being driven wheel a motor drive is housed according to the car of any one claim among claim 1-2 and the 11-13.

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