CN1150103C - Motor bicycle with electric motor - Google Patents

Abstract

The invention relates to a motor bicycle provided with a motor as the power unit and batteries for feeding the motor in the forward lower portion of its body frame. A front swing arm 42 is mounted on a main frame 2 for receiving the batteries, a front wheel 3 is arranged on the front swing arm 42, and a front pivot 41 is equiped on the front of the frame. A large load from the front wheel is transmitted by way of the front swing arm and the front pivot to the main frame. The main frame thus receives the large load on the wheel, which permits the minimization of the rigidity around the head pipe and thus reduces the total weight and size of the body frame.

Description

The two-wheeled of electro-motor is housed

The present invention relates to a kind of structure that two-wheeled body structure electro-motor, that comprise front suspension is housed.

Open the shown in Figure 1 of flat 8-175477 communique " power switching device of engine of motor-bicycle and electrical motor " communique as the spy, what motored two-wheeled front suspension adopted usually is telescopic suspension.Having on telescopic suspension two-wheeled, suspension and steering hardware are combined into an integral body.Though telescopic suspension is widely adopted, what front-wheel bore all puts on the pipe from the ground-surface load, so the vehicle frame around the head pipe must adopt the big structure of rigidity.

Have, above-mentioned two-wheeled also must the loading is used for the storage battery dedicated of driving motor again, and the vehicle frame part of storing the storage battery with constant weight also must be the big structure of rigidity.This will further increase the weight of body structure.

Therefore, as purpose, research replaces the structure of the draft hitch of telescopic suspension to present inventors the weight that alleviates vehicle frame, and the structure of the suspension system of transvaluing is separated steering swivel system from suspension system, finally successfully adopt another suspension frame structure.

Be a kind ofly to dispose two-wheeled to the storage battery of electrical motor power supply as the front lower place of unit power plant, vehicle frame specifically with electrical motor, it is characterized in that on the main car frame of vehicle frame front portion the front swing arm that can swing up and down being installed, the front-wheel that can freely rotate is installed on this front swing arm, main car frame disposes the preceding pivot that is used to install front swing arm as the framework of accommodating storage battery in the front portion of this framework.

Heavy load from front-wheel passes to the big main car frame of rigidity of storing storage battery by preceding pivot from front swing arm.Therefore, owing in fact born, the rigidity of (structure) around the pipe that does not bear the road surface load can be become the Min. of energy meet requirements by main car frame from the heavy load of front-wheel.Can make the in light weight and miniaturization of whole vehicle frame.

The simple declaration of accompanying drawing

Fig. 1 is relevant two-wheeled lateral plan of the present invention.

Fig. 2 is the lateral plan around the relevant main car frame of the present invention.

Fig. 3 is the birds-eye view about main car frame of the present invention, front and rear portions suspension system and steering swivel system.

Fig. 4 is the lateral plan about main car frame of the present invention, front suspension system and steering swivel system.

Fig. 5 is the birds-eye view about main car frame of the present invention, front suspension system and steering swivel system.

Fig. 6 is the decomposition side view about a main car frame of the present invention and a tube support.

Fig. 7 is the assembly structure figure of relevant resin spring of the present invention.

Fig. 8 is the front elevation about a main car frame of the present invention and a tube support.

Fig. 9 is the exploded perspective view about main car frame of the present invention, front suspension system and steering swivel system.

Figure 10 is the birds-eye view of the main car frame of relevant storage battery condition of the present invention.

Figure 11 is the side sectional view of the main car frame of relevant storage battery condition of the present invention.

Figure 12 is the cutaway view of the 12-12 line of Figure 11.

Figure 13 is the instruction diagram of the relation of expression front swing arm and front-wheel.

Below according to the description of drawings embodiments of the invention.

Also have, " preceding ", " back ", " left side ", " right side ", " on ", D score refers to the direction of seeing from chaufeur.Fr represents that the place ahead, Rr represent that rear, L represent that left side, R represent the right side, and drawing is the thing of seeing along the direction of symbol indication.

Fig. 1 is a two-wheeled lateral plan of the present invention.

Two-wheeled 1 is constructed as follows: the main car frame 2 that the configuration of its central lower is made of the framework of double as storage battery storage bin, be equipped with in the front portion of this main car frame 2 suspension front-wheel 3 Swinging Type Front Suspension system 4 and with the steering swivel system 5 of front suspension system 4 splits, and the rear-suspension system 8 of unit power plant 6 and suspension trailing wheel 7 is installed at the rear portion of main car frame 2.

Unit power plant 6 is driving engine 6a and motor (electrical motor) the 6b assembly as propulsion source.Front-wheel 3 of the present invention and trailing wheel 7 have adopted the wheel of large diameter (14～20 inches).

In the drawings, the inboard of two-wheeled 1 trailing wheel 7 (drawing is seen relatively) disposes airfilter 11, freeing pipe 12, silencer 13 and jet pipe 14.Around vehicle frame front fender apron 15, protecgulum 16, handlebar protecgulum 17, central authorities' (operator's compartment) cover plate 18, rear cowl 19 and rear mudguard 21 are housed from front to back.

Have again, the 22nd, leg protection plate, 23 loudspeaker, the 24th, headlight, the 25th, handlebar, 25a are handles, the 26th, vehicle seat, the 27th, helmet box, 27A are the helmets, the 28th, taillight, the 71st, guide duct, the 72nd, radiator and 73 is fans.

Fig. 2 is the lateral plan of (structure) around the main car frame of the present invention.

The following describes unit power plant 6 and rear-suspension system 8.Can be installed in main car frame rear portion top to unit power plant 6 by back pivot 31, trailing wheel 7 is installed on the unit power plant 6 with swinging up and down, and the place of more going up some at the main car frame rear portion also is equipped with the vehicle seat 26 that is used for erection plan 1 and a rail 32 of helmet box 27.On figure, seat rail 32 is installed posterior bumper 33 near an end of trailing wheel 7.

The unitized construction that is configured in a tube support 51 of the seat rail 32 of main car frame 2, main car frame 2 back upper places of two-wheeled 1 preceding bottom and main car frame front upper place constitutes vehicle frame 57.

Fig. 3 illustrates the birds-eye view of main car frame of the present invention, front suspension system and rear-suspension system and steering swivel system.Shown in the figure, extend the front swing arm 42 of following front suspension system 4 forward from the front portion of main car frame 2, utilize these front swing arm 42 single armeds supporting front-wheel 3.On the other hand, extend back unit power plant 6, utilize this unit power plant single armed supporting trailing wheel 7 from the rear portion of main car frame.

Because front swing arm 42 is biased in a side (right side) of car body center C, and unit power plant 6 is biased in the opposite side (left side) of car body center C, so two-wheeled 1 left and right sides weight balancing is good.

Fig. 4 is the lateral plan of main car frame of the present invention, front suspension system and steering system.

Front suspension system 4 structures are as follows: by preceding pivot 41, extend the front swing arm 42 that the side slightly is down " U " font from main car frame 2 front lower places, the front-wheel 3 that can freely rotate is installed on front swing arm 42.Specifically, the steering swivel 43 that freely rotates about the energy that is contained on the front-wheel 3 is installed on the top of front swing arm 42.

And front suspension system 4 is separated into the anterior bumper 45 that buffering front swing arm 42 swaying directions impact the buffer unit 44 of (impacting from ground-surface) and reduce the vibration of front swing arm 42 swaying direction amplitudes.

Detailed structure is that the resin spring (buffer unit) 44 that buffering front swing arm 42 swaying directions impact is clipped between main car frame 2 and the front swing arm, simultaneously anterior bumper 45 is installed between main car frame 2 and the front swing arm 42.

Specifically, the mounting structure of anterior bumper 45 is the right sides, bottom (inboard among the figure) that an end of anterior bumper 45 are supported on a following tube support 51 by pivot 46, the other end of anterior bumper is supported on the top left side of front swing arm 42 by pivot 47, also can directly be contained in an end of anterior bumper 45 on the main car frame 2 in addition.

Steering swivel system 5 connects as follows: a tube support 51 tilts to extend upward from main car frame 2 front upper, and head pipe 52 is fixed on the top of a tube support 51.Handlebar column 53 is installed in rotation in the head pipe 52, and spindle arm 54 is installed in the lower end of handlebar column 53, and the lower end of spindle arm 54 is connected on the steering swivel 43 by link mechanism 55.

Link mechanism 55 is combined by first link rod 55a that is connected spindle arm 54 lower ends and the 2nd link rod 55b that is connected on the steering swivel 43.And be installed in the bigger front-wheel of diameter 3 wheels.

Owing to link mechanism is configured in front-wheel 3 wheels, so the space that can effectively utilize is arranged.So, because of guaranteeing to make full use of the space at head pipe 52 belows and rear, so two-wheeled Design freedom increases.And when from two-wheeled 1 take off stretcher 83 that the occupant uses, when pin is placed on two-wheeled the going up of the miniature motor cycle type on the low-floor type stretcher, also can guarantee has sufficient space around the chaufeur pin.

Have again, the 35th, preceding brake plate, brake clamp 36 is mounted in the device on the steering swivel 43.The 37th, the bearing of supporting back pivot 31 (consulting Fig. 2).

Rear lower at main car frame 2 is equipped with main support 81, occupant's stretcher 83 and side stand 84.

Fig. 5 is the birds-eye view of main car frame of the present invention, front suspension system and steering swivel system, is the view that link mechanism 55 is launched.

This illustrates, and front swing arm 42 is the crooked to the right and extension forward by preceding pivot 41 from main car frame 2 front end right sides, to walk around front-wheel 3.On the other hand, spindle arm 54 from the limit, lower end of the handle post 53 that is positioned at vehicle body center C (on the vehicle body line of centers) to the right curved edges extend forward, to walk around front-wheel 3.

And, originally illustrate, make the center of a tube column 51 only depart from a size L to a side (left side) from the vehicle body center C, dispose anterior bumpers 45 at vehicle body center opposite side (right side) near a tube column 51.This anterior bumper 45 is extended abreast with the vehicle body center C.Because anterior bumper 45 is as far as possible near the configuration of vehicle body center C, so the moment of flexure of inhibit function on anterior bumper 45 of can trying one's best.Thereby can do the intensity of anterior bumper 45 lessly,, can become the structure that is suitable for limiting on the space more preceding rotatable spindle arm so can make the structure miniaturization of anterior bumper 45.

Resin spring 44 is configured on the vehicle body center C.36a is a piston, and 36b is a brake pad.

Fig. 6 is the decomposition side view about a main car frame of the present invention and a tube column.

Usually, the casterangle of various vehicle steering hardwares all has some variations.Therefore, if the vehicle frame that labour contractor's tube column and vehicle body work are integral, then vehicle frame also will become a kind of new form when casterangle changes.

In the present embodiment, employing is main car frame 2 and a tube column 51 separated structures forms.Specifically, in order to make the highly versatile of main car frame 2, adopted the double as storage battery to accommodate the framed structure of case.And adopted aluminium alloy casting spare in order to improve rigidity.Use a plurality of bolt B 1 then ... labour contractor's tube column 51 is installed on the main car frame 2.

Owing to adopted this structure, even vehicle changes, main car frame 2 also can be general, as long as change a tube column 51.The design-calculated degree of freedom has increased.

And then, as shown in Figure 4, because the heavy load of the front suspension system 4 that adopts swing arm type by the big main car frame of rigidity 2 being born from front-wheel 3 with front swing arm 42 and preceding pivot 41, so can bear heavy load with main car frame 2 efficiently and effectivelies.Therefore, be not subjected to the effect of heavy load on the tube column 51.

Have again, even if take off the occupant with stretcher 83, pin is placed on the two-wheeled of miniature motor cycle type on the low-floor type stretcher from two-wheeled 1, the also heavy load that can the big main car frame of rigidity 2 be born from front-wheel 3 by preceding pivot 41.

Fig. 7 (a) and (b) be the mounting structure figure of resin spring of the present invention.(a) cross-section structure seen from the side of expression, (b) expression planar structure.

Resin spring 44 has been plates that the resilient resin of action of the spring is made, and 2 holes (mounting hole 44a and be used to set the hole 44b that elastic force is used) of perforation left and right directions (direction in the table of figure) are arranged.Resin spring 44 is installed in the front portion of main car frame 2, and is positioned in the past that pivot 41 upwards leaves on the position of given size H.

Details is as follows: the mounting structure of resin spring 44 is that adapter plate 48 is inserted among the mounting hole 44a of resin spring 44, and adapter plate 48 is installed in the front portion of main car frame 2.On the other hand, the front-back of resin spring 44 is clipped in the back side of front swing arm 42 and is installed between the clamping plate 49 on front swing arm 42 back sides.

Fig. 8 is the front elevation of a main car frame of the present invention and a tube column.Graphic structure is the position, right side that an end of anterior bumper 45 is bearing in a tube column 51 bottoms with pivot 46.

2a, 2a are the bearings of Zhi Chengqian pivot 41, and 2b, 2b are the installation portions of the adapter plate 48 of resin spring use.

Fig. 9 is the exploded perspective view of main car frame of the present invention, front suspension system and steering swivel system.

This figure is the figure that illustrates in greater detail above-mentioned front suspension system 4 and steering swivel system 5 structures.The support tube 42a of front swing arm 42 is installed with preceding pivot 41 on bearing 2a, the 2a of main car frame about 2, be formed on that connecting portion 42c, 42c on the flat part of front swing arm 42 is last to connect clamping plate 49 with upper and lower two bolt B 2, B2, sandwich resin spring 44 with the back side and the clamping plate 49 of flat part 42b.Adapter plate 48 is inserted among the mounting hole 44a of resin spring 44, with bolt B 3, B3 the two ends, the left and right sides of this adapter plate 48 is installed on installation portion 2b, the 2b of main car frame 2, and then with bolt B 1 ... labour contractor's tube column 51 is installed in the front upper part of main car frame 2.Utilize pivot 46 end of anterior bumper 45 to be supported on the root of a tube column 51.Utilize pivot 47 other end of anterior bumper 45 to be supported on the top of front swing arm 42.On the other hand, the top of a tube column 51 is provided with head pipe 52, and handlebar column 53 is installed in the head pipe 52, also can freely rotates.Spindle arm 54 is installed in the lower end of handlebar column 53, and the front end of spindle arm 54 is connecting link mechanism 55.

Front swing arm 42 is provided with the block set 42d that is used to install axle sleeve 43a that can the rotating steering swivel 43 in the left and right sides in the end.

Figure 10 is the birds-eye view of the main car frame of storage battery status of the present invention.Be illustrated on the figure a plurality of storage battery Ba are housed on the main car frame 2 ...That is to say, equipped a plurality of storage battery Ba in the front lower place of vehicle frame 57 ...

Detailed assembling situation is as follows: main car frame 2 is extended with left and right sides curb girder 2c, 2c on the fore-and-aft direction of vehicle body both sides, connect with anterior crossbeam 2d between the front end of curb girder 2c, 2c about these closed, and about curb girder 2c and the rear end of 2c between be closed connection of rear portion crossbeam 2e of a shape by backsight.

Therefore, main car frame 2 be shaped as the shape that except front portion central authorities there are not the end, what a double as base plate was installed on this main car frame 2 accommodates case 61, this base plate has loaded on 5 storage batterys most of.A plurality of storage battery Ba ... give the electrical motor 6b among Fig. 1 power supply.Two row are installed in three row, front and back side by side between left and right sides curb girder 2c, 2c, are arranging alternately.Therefore main car frame is laterally wide.

Figure 11 shows the sectional view of the main car frame of storage battery condition of the present invention, and the crossbeam 2e of door shape is across at a plurality of storage battery Ba ... the top.

Figure 12 is the cutaway view of the 12-12 of Figure 11, uses shown in the figure and accommodates the main car frame 2 that case 61 stops up the no end.

Storage bin 61 is chests that a light alloy is made, and is used for storing the assembly by (not shown)s such as the electronic circuit formation of driving and control motor 6b (consulting Fig. 1).Constitute by casing 62 and the lid 63 that is blocking up these casing 62 tops.Storage bin 61 inserts from the opening of main car frame below, flange 62a ... with bolt B 4 ... be installed in main car frame 2 below.

Below storage bin 61 and the combination mechanism that leaves the parts in the storage bin 61 in are called control assembly.

As mentioned above, main car frame 2 is the members that constitute vehicle frame 57 parts, and main car frame 2 extends head pipe 52 belows, has curb girder 2c, the 2c roughly parallel to the ground of pair of right and left thereafter.

Feature of the present invention is that control assembly is fixed on bottom between left and right sides curb girder 2c and the 2c, and takes the space between left and right sides curb girder 2c, the 2c.On this control assembly, lay simultaneously a plurality of storage battery Ba ...

On the storage bin 61 on the top of main car frame 2 multiple the setting separate the dividing plate 64 that the resin between a plurality of batteries is made, use screw B5 ... dividing plate 64 is installed on the main car frame 2.But, whether dividing plate 64 being arranged is arbitrarily.

On the other hand, storage battery cover plate 65 is covered on a plurality of storage batterys, the flange 65a of storage battery cover plate 65 is installed on the main car frame 2 with bolt B 5.

As mentioned above, owing to storage battery carries on the storage bin 61 of double as main car frame 2 base plates, so do not need to carry storage battery Ba ... members such as support, can reach the purpose that reduces component count.

Have again, because with accommodating the bottom that case 61 has stopped up main car frame 2, so increased the rigidity of main car frame 2.

Also have, because storage bin 61 exposes below main car frame 2, the thermal diffusivity of parts improves.And below storage bin 61, be formed with many radiating gill 62b ... so thermal diffusivity further is enhanced.Because storage bin 61 is chests made from the good light alloy of heat-conductive characteristic, so the heat that storage battery Ba distributes also is easy to dissipate.

Explain the reason that front swing arm 42 side-lookings slightly are down " U " word shape according to Figure 13 below.

Figure 13 (a)～(c) is the view of the relation of explanation front swing arm and front-wheel.

In (a) figure, the member of representing with solid line is the swing arm of adopting in the embodiment of the invention 42, and the member of representing with thin dashed line is the front swing arm Fa of Comparative Examples.Owing to front swing arm 42 made sees slightly from the side and be down " U " font, so the outer rim of front swing arm 42 and front-wheel 3 is overlapping at the P1 point of close front-wheel center O.Relative therewith, the front swing arm Fa of Comparative Examples is a horizontally extending arm on the height at the center of front-wheel 3, and the outer rim of front swing arm Fa and front-wheel 3 is overlapping on the position that distance front-wheel center P2 is farthest ordered.

(c) figure is the front swing arm Fa of expression Comparative Examples and the birds-eye view of the relation between the front-wheel 3.When only turning to deflection angle θ manipulation front-wheel 3, the departure distance of 3 outer rim is S2 from the vehicle body center C to front-wheel.The front swing arm Fa of Comparative Examples for do not bump front-wheel 3 must with big departure distance S2 curved around.Therefore, front swing arm Fa is big to the outstanding quantitative change of car width of cloth direction.

(b) figure is the front swing arm 42 that adopts in the embodiments of the invention of expression and the birds-eye view of the relation between the front-wheel 3, because the location overlap that the outer rim of front swing arm 42 and front-wheel 3 is ordered at P1, when only handling front-wheel steering with deflection angle θ, the departure distance of 3 outer rims is S1 from the vehicle body center C to front-wheel, and is littler than the departure distance S2 of above-mentioned Comparative Examples.Therefore, in order not bump front-wheel 3 front swing arms 42 if with the less deviation distance curved around, make the overhang can be little to car width of cloth direction.Because the overhang of front swing arm 42 is little, the two-wheeled miniaturization that becomes.

That is to say, see that from the side the outer peripheral edges of the front swing arm 42 that is down " U " word shape and front-wheel 3 are overlapping in the position higher than front-wheel center O (position that P1 is ordered).The amplitude of fluctuation of the front-wheel 3 that turns in this lap position is littler than the amplitude of fluctuation of front-wheel 3 outer peripheral edges that are in front-wheel center O height.Therefore, front swing arm 42 is in the little position of front-wheel 3 swing and can contact front-wheel 3 ground and turn to.

The effect of front suspension system 4 is described according to Fig. 4 and Fig. 7 below.

Anterior bumper 45 among Fig. 4 reduces the Oscillation Amplitude of the swaying direction of front swing arm 42.

On the other hand, the impulsive force of swaying direction passes to resin spring 44 from the back side of front swing arm 42 on the front swing arm 42 in Fig. 7, and the impulsive force of front swing arm 42 lower swing directions passes to resin spring 44 from clamping plate 49.The elastic deformation of resin spring 44 plays the effect of spring at this moment, has relaxed impulsive force.

So, front suspension system 4 will utilize resin spring 44 to alleviate impulsive force, the amplitude of utilizing anterior bumper 45 to reduce to vibrate.

So, resin spring 44 is the parts that play action of the spring with the elastic deformation of little stroke, can adapt to from loading to the large-scale load of heavy load for a short time.And with coil spring relatively, resin spring 44 is members of very miniaturization.

Therefore, and the existing suspension system of coil spring and the comprehensive all-in-one-piece of energy disperser relatively, the load range that the present invention adapts to is big, stroke is little, and is small-sized suspension system, is easy to be configured in the narrow space.

Based on said structure, the present invention has following effect.

First invention can consist of small and light body shell. Because on the main car frame of vehicle frame front portion The front swing arm that installation can swing up and down is installed with the front-wheel of Free at this front swing arm, Main car frame has disposed for forward swing is installed in the front portion of this framework as the framework of accommodating battery The front pivot of arm holds so pass to accommodate from front swing arm by front pivot from the heavy load of front-wheel The main car frame that the rigidity of battery is big. Because main car frame can bear reliably from the big of front-wheel and bear Carry, satisfy the demand so can make the rigidity of structure around the head tube of not bearing the road surface load Min.. So can do whole vehicle frame small and lightly.

Claims (1)

1. the two-wheeled of electro-motor is housed, it has the motor as Power Component, configuration is to the storage battery of motor power supply below vehicle frame, but the head pipe that has the free rotary ground supporting steering component simultaneously in the place ahead, top of this vehicle frame, this steering component is used to handle front-wheel, it is characterized in that, on the main car frame of the front portion of above-mentioned vehicle frame, the front swing arm that can swing up and down is installed, front-wheel free to rotate is installed on this front swing arm, above-mentioned main car frame is the framework of accommodating storage battery, is disposing the preceding pivot that is used to install above-mentioned front swing arm in the front portion of this support.

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