CN1186227C - Vehicle with auxiliary power - Google Patents

Abstract

A vhicle with auxiliary power is provided with a manual driving part for driving wheels by man power, and a motor-driven driving part 30 for driving the wheels by a motor 40 capable of detecting magnetic pole positions of a rotor 42 to control a rotational magnetic field of a stator 41, a substrate case 32 for arranging a control substrate 33 is attached to an inside of a lid part 31b of a casing 31 for covering the motor 40, and the position detecting means (Hall element 49) for detecting the magnetic pole positions of the rotor 42 is provided in a face, of the case 32, opposed to the rotor 42. The invention is to provide a vhicle with auxiliary power which easily attach a rotor position detecting means to enhance assemblage, and easily position the position detecting means to arrange in an accurate position.

Description

The vehicle of band auxiliary power

Technical field

The present invention relates to the vehicle of band such as electronic assistance bicycle auxiliary power, particularly relate to the electrical motor of this vehicle.

Background technology

Vehicle as this band auxiliary power, open in the 2000-105155 communique (G01L 3/14) in the disclosed electronic assistance bicycle the spy, in the rotary shell that constitutes rear wheel hub, dispose the stationary housing that is fixed on the axletree, the DC brushless motor wherein is installed.And the position-detection sensor that detects its rotor magnetic pole position is installed on the inwall of stationary housing, and control basal plate is configured in the outside of stationary housing.In addition, in above-mentioned communique, the embodiment that control basal plate is installed at the cap of stationary housing is disclosed also.

But, in the technology that above-mentioned communique is put down in writing, owing to must after motor unit being installed in the stationary housing, be installed to position-detection sensor again on the inwall of the stationary housing that stands facing each other with rotor, therefore assembleability is poor, the location is difficulty also, be easy to generate installation error, thereby the misgivings that can not detect the tram are arranged.

In addition, the occasion of control basal plate is installed at the cap of the stationary housing that is built-in with electrical motor, owing to generally before being installed to cap on the stationary housing, must link together the coiling of electrical motor and control basal plate with lead, therefore, in case cap is installed on occurs wire relaxes on the stationary housing, the misgivings that exist rotor rotated and lead to interfere.

Summary of the invention

Therefore, the present invention proposes in order to address the above problem, its objective is provides a kind of position detecting device that rotor can be installed simply, can improve the assembling performance, and can make the become vehicle of easy and configurable band auxiliary power in the tram of the location of position detecting device.

In addition, characteristics of the present invention are, also provide a kind of distribution and rotor that connects electrical motor coiling and control basal plate not interfere, simply the vehicle of the band auxiliary power of distribution.

To achieve these goals, the invention is characterized in, be provided with the electric driving part of the above-mentioned wheel of direct motor drive of manpower drive division of taking turns and the rotating field of controlling stator by the position of magnetic pole of detection rotor by Manpower propulsion of bicycle, be useful on the substrate box that disposes control basal plate in the housing cap installed inside that covers above-mentioned electrical motor, on the face relative on this substrate box, be equipped with the position detecting device that detects above-mentioned rotor magnetic pole position with above-mentioned rotor.

In addition, it is characterized in that above-mentioned position detecting device is made of Hall unit.

And, it is characterized in that the aforesaid substrate box is in location, the inboard of above-mentioned cap and be installed in the inboard of this cap.

In addition, it is characterized in that above-mentioned position detecting device on the aforesaid substrate box location and be installed on the aforesaid substrate box.

On the other hand, it is characterized in that, also comprise connecting portion, this connecting portion has the control basal plate in the inboard configuration of cap of the housing that covers above-mentioned electrical motor, with the back is connected the coiling of above-mentioned electrical motor and the distribution of control basal plate on the above-mentioned housing in that cap is being installed in.

In addition, it is characterized in that,, be formed for terminal hole that makes above-mentioned electrical motor wire wrap terminal be exposed to the cap outside and the leadout hole that is used for the distribution terminal from above-mentioned control basal plate is exported to the cap outside at above-mentioned cap as above-mentioned connecting portion.

Description of drawings

Fig. 1 is the section-drawing of main portion of the electronic assistance bicycle drive division of expression embodiment of the present invention.

Fig. 2 is the back view of the stationary housing cap of above-mentioned embodiment.

Fig. 3 is the birds-eye view from cap side observation stationary housing of same embodiment.

Fig. 4 is the A-A section-drawing of above-mentioned Fig. 3.

Fig. 5 is illustrated in the approximate vertical view of hanging the state of belt on small belt pulley, big belt pulley and the stretching belt pulley of the speed reduction gearing that constitutes above-mentioned embodiment.

Fig. 6 is the central sectional view of above-mentioned Fig. 5.

Fig. 7 is the section-drawing that the motor rotor that will install on the change-speed box of above-mentioned embodiment of expression partly decomposes.

Fig. 8 is the amplification profile of the motor rotor part of the same embodiment of expression.

Fig. 9 is the birds-eye view of the rotor of the same embodiment of expression.

Figure 10 is the central sectional view of rotor of above-mentioned Fig. 9 of the same embodiment of expression.

Figure 11 is the birds-eye view of the rotor inner ring of the same embodiment of expression.

Figure 12 is the birds-eye view of the rotor outer ring of the same embodiment of expression.

Figure 13 is the lateral plan of the rotor outer ring of the same embodiment of expression.

Figure 14 is the integrally-built lateral plan that electronic assistance bicycle of the present invention is used in expression.

Wherein, 5-pedal; The 11-battery; Sprocket wheel before the 12-; The 13-chain; The 14-trailing wheel; The 17-drive division; The 20-axletree; 21-built in type change-speed box; Sprocket wheel behind the 22-; 23,23a, 23b-rotary shell; The 25-big gear wheel; The 30-electric driving part; The 31-stationary housing; The 31a-main part; The 31b-cap; The 31c-cylindrical portion; The 31d-holding member; The 31n-mounting hole; The 31p-terminal hole; The 31q-leadout hole; The 33-control basal plate; The 33a-distribution terminal; The 34-big belt pulley; The 36-free-wheel clutch; The 37-miniature gears; 38-stretching belt pulley; The 40-DC brushless motor; The 41-stator; The 41a-wire wrap terminal; The 42-rotor; 46-magnet; The 47-small belt pulley; The 49-Hall unit; The 49a-substrate; The B-belt.

The specific embodiment

Below, be example explanation embodiments of the present invention with electronic assistance bicycle.

The integral structure of electronic assistance bicycle at first, is described based on Figure 14.

This electronic assistance bicycle connects the saddle tube 3 that fore preceding pipe 1 is set and vehicle seat 2 is installed with main car frame 4, and the pedal 5 that rotates with manpower is installed in the part that connects this main car frame 4 and above-mentioned saddle tube 3.

Before above-mentioned on the pipe 1, be equipped with by preceding pipe 1 bonded assembly handle 6 and determine the front-wheel 7 of travel direction by the operation of this handle.In addition, only show the wheel rim 8 and the tire 9 of front-wheel 7 in the drawings, omitted spoke.

In addition, before being installed on below the preceding frame 10 of pipe on 1, the battery 11 of the power supply that becomes aftermentioned electrical motor etc. is installed, this battery 11 uses 24 volts nickel-cadmium cell.Above-mentioned battery 11 releasably is contained in the battery case, can unload in indoor charging during charging.

In addition, the preceding sprocket wheel 12 that rotates with pedal 5 is installed on above-mentioned pedal 5, is linked with chain 13 on this preceding sprocket wheel 12, the rotation of preceding sprocket wheel 12 is passed to the back sprocket wheel that on the not shown axletree of trailing wheel 14, is provided with by chain 13.

The trailing wheel 14 that becomes drive wheel by tire 15, wheel rim 16, spoke (not shown) and the drive division 17 that is used to drive trailing wheel 14 constitute.As described below, in this drive division 17, electric driving part that is built-in with the moment of torsion test section (torque sensor) that detects by the manpower moment of torsion of chain 13 transmission, constitutes by electrical motor and speed reduction gearing and the control circuit that constitutes by microcomputer etc. etc., this microcomputer is imported the detected value of above-mentioned moment of torsion test section, and drive signal exported to above-mentioned electrical motor, the brake equipment 19 by the operation braking rear-wheel 14 that is installed on the brake lever 18 on the above-mentioned handle 6 also is installed simultaneously.

As mentioned above, above-mentioned trailing wheel 14 merges and uses them to travel by the manpower drive division of being made up of pedal 5, preceding sprocket wheel 12, chain 13, back sprocket wheel and change-speed box etc. and two drive divisions drivings of electric driving part of being made up of electrical motor and speed reduction gearing etc.

Then, describe this electronic assistance bicycle driving portion 17 in detail according to Fig. 1～Fig. 6.

On the axletree 20 of trailing wheel 14, on the part of its length direction, be provided with and the same built in type change-speed box 21 of ordinary bicycle, this change-speed box 21 is connected on the sprocket wheel 22 of back by the free-wheel clutch (not shown), only carry out transmission of power with the unidirectional rotation of above-mentioned pedal 5, when pedal 5 backward rotation, be cut off to the transmission of power of change-speed box 21.

Built in type change-speed box 21 is rotary shell 23 coverings that the center constitutes trailing wheel 14 wheel hubs with axletree 20, this rotary shell 23 is made up of two parts, one is rotary shell 23a, be formed for spoke is installed in two ring-type wheel rim 24a, 24b on the periphery, another is rotary shell 23b, be fixed by bolts on the above-mentioned ring-type wheel rim 24b in a plurality of positions, make it to cover the peristome of above-mentioned rotary shell 23a.

In the inboard of above-mentioned another rotary shell 23b, with bolt the big gear wheel 25 that constitutes the final stage of speed reduction gearing is arranged, make braking carriage 26 form the circle concentric respectively in the outside with axletree 20.On braking carriage 26, the rotating plate 27 that has formed discoid wall towards the rotary shell 23b outside is installed by screw or welding etc., be provided with brake equipment 19 interior week at this rotating plate 27, this brake equipment 19 is promptly braked the rotation of rotary shell 23 along interior all moving contacts of above-mentioned rotating plate 27 along outer direction by the operation of above-mentioned brake lever 18.This rotating plate 27 and brake equipment 19 are braked and cover 28 coverings.

Flexible cord 29 from the power lead of above-mentioned battery 11 or other signal wire (SW) etc. passes brake cover 28, insertion will constitute a part of grooving of the cap 31b on the stationary housing 31 of electric driving part 30 and the part that forms, and be installed in stationary housing 31 cap 31b inboards on substrate box 32 in control basal plate 33 be connected.

Stationary housing 31 usefulness bolt main part 31a and cap 31b form, and this main part 31a covers aftermentioned DC brushless motor, and the substrate box 32 of built-in above-mentioned control basal plate 33 and the big belt pulley 34 of formation speed reduction gearing etc. are installed on this cap 31b.Main part 31a is installed in the periphery of change-speed box 21 by bearing 35, and cap 31b is fixed on the part that outstanding laterally cylindrical portion 31c is not provided with the change-speed box 21 of axletree 20.Control basal plate 33 is covered by substrate box 32, and is installed on the cap 31b that is formed by the good aluminum alloy of heat conductivity etc., therefore, discharges by cap 31b from the heating of control basal plate 33.

At the medial surface of the main part 31a of stationary housing 31, the stator 41 that constitutes DC brushless motor 40 is installed, on the iron core that forms 18 groovings, the reel coiling and constituting of this stator 41.In addition, the control basal plate 33 in the substrate box 32 of the cap 31b inboard by being installed in stationary housing 31 is supplied with this stator 41 with the electric power that is used to form three phase rotating field.

In interior all sides of said stator 41, be provided with by two bearings 43,43 at the periphery of change-speed box 21 rotor 42 free to rotate.The outer ring 45 that the inner ring 44 that this rotor 42 is formed by the aluminum alloy of lightweight and the silicon steel plate of lamination form constitutes, 45 the peripheral part in the outer ring, imbed a plurality of magnet 46 that form magnetic pole, toothed small belt pulley 47 is installed on inner ring 44, make it side-prominent to cap 31b.

Be arranged at small belt pulley 47 on the above-mentioned rotor 42, be installed in by free-wheel clutch 36 between the big belt pulley 34 of cap 31b inboard of stationary housing 31 and the stretching belt pulley 38 (as shown in Figure 5) and hang with belt B.Because above-mentioned each belt pulley 47,34,38 and belt B have tooth, so can not slide.In addition, the output shaft of big belt pulley 34 is to the outstanding miniature gears 37 that forms in the outside of cap 31b, and this miniature gears 37 constitutes the structure that is meshed with the big gear wheel 25 that is installed in rotary shell 23b inboard.Thereby the rotation of rotor 42 is slowed down by small belt pulley 47, big belt pulley 34, free-wheel clutch 36, miniature gears 37 and big gear wheel 25, and passes to rotary shell 23b.In addition, in the big gear wheel 25 that is installed on rotary shell 23b inboard and outstanding laterally and be fixed between the periphery of the cylindrical portion 31c on the axletree 20 and be provided with bearing 39 from the cap 31b of stationary housing 31.

As mentioned above, constitute fast rotational and the speed reduction gearing of electrical motor 40 output stages of big gear sound easily takes place with belt pulley 47,34,38 and belt B, thereby can reduce the noise that speed reduction gearing sends.

Above-mentioned big belt pulley 34 is installed in the inboard of cap 31b by holding member 31d shown in Fig. 2 etc.Holding member 31d extends the installation site (mounting hole 31n) from big belt pulley 34 to stretching belt pulley 38 setting and forms, be formed with screw hole 38b in the installation site of stretching belt pulley 38, this screw hole 38b is used for by screw 38a (as shown in Figure 5) stretching belt pulley 38 being installed with rotating freely.As shown in Figure 2, belt B is being hung under the state of big belt pulley 34, the holding member 31d that big belt pulley 34 has been installed is fixed by bolts to and hangs over the inside side of the cap 31b of the discontiguous position of belt B on each belt pulley 34,38.

After on the main part 31a that cap 31b is assembled into stationary housing 31 with bolt, greater than the mounting hole 31n of stretching belt pulley 38 stretching belt pulley 38 is inserted cap 31b from making diameter, and be installed to screw 38a among the screw hole 38b of above-mentioned holding member 31d free to rotately.

In addition, the inside side at the substrate box 32 that has held above-mentioned control basal plate 33, be equipped with for the drive controlling DC brushless motor 40 necessary Hall units 49 that are used for detection rotor 42 position of magnetic poles in position corresponding to the magnet 46 of rotor 42, the detection signal of this Hall unit 49 is transfused to the microcomputer that carries on control basal plate 33, makes the motor control signal.In order to control three phase rotating field, as shown in Figure 2, on substrate 49a, three above-mentioned Hall units 49 are arranged with given arranged spaced, this substrate 49a location and installation is at the given position of the inside of substrate box 32 side.Employing can directly detect the magnetic pole of the magnet 46 of rotor 42 as the Hall unit 49 of the position detecting device of rotor 42, thereby, do not need magnetic pole to judge and use parts, reduced the parts number, thereby can go out the position of magnetic pole of rotor 42 with simple structure detection.

In addition, as shown in Figure 3, Figure 4, three wire wrap terminal 41a that produce the stator 41 of three phase rotating field give prominence to configuration from stator 41 to the direction of cap 31b, and are corresponding with it, on cap 31b, be formed with 3 terminal hole 31p that make above-mentioned wire wrap terminal 41a be exposed to the cap 31b outside.And, on cap 31b, also be formed with leadout hole 31q, by this leadout hole 31q, will export to the outside of cap 31b from three distribution terminal 33a of control substrate 33, this control basal plate 33 will be used to produce the electric power supply stator 41 of three phase rotating field.Each the distribution terminal 33a that derives links to each other with the wire wrap terminal 41a that exposes from each terminal hole 31p.

On the other hand, on the periphery of the change-speed box 21 of back sprocket wheel 22 sides of transmitting manpower, be fixed with the sensor board 51 that the torque sensor that detects the manpower moment of torsion is used in the inboard of rotary shell 23a.In addition, in the open circumferential of rotary shell 23a, the sealing member 52 with 51 moving contacts of the sensor plate is installed, in order to waterproof and dustproof etc.

Inboard at the sensor plate 51, be provided with sensor box 54, this sensor box 54 is installed in the periphery of change-speed box 21 by bearing 53, simultaneously by being bolted on the rotary shell 23a, this sensor board 51 is connected by coil spring 55 with sensor box 54, and this coil spring 55 is between being fixed on the pushing pin 51a on the sensor board 51 and being arranged between the accommodation section 54a on the sensor box 54.That is to say, when change-speed box 21 is delivered to the manpower propulsive effort on the sensor board 51, by amount of contraction coil spring 55 is shunk, and make rotary shell 23a rotation by sensor box 54 corresponding to the manpower torque.

In the inboard of the sensor box 54, can dispose the circle 57 of circular-arc aluminum with being free to slide in the periphery of loop bracket 56, this circle 57 embeds in the many places of its periphery pin 58 is installed, and is with the coil spring 59 that has elastic force along the direction that broadens on pin 58.In addition, circle 57 contacts with the dip plane (not shown) that forms on loop bracket 56, when applying manpower, sensor board 51 and circle 57 produce dislocation on hand of rotation, thereby Yi Bian enclose 57 dip plane that rotate an edge loop bracket 56 and move to axial direction.In addition, enclose 57 peripheries by being configured in this, the coil 60 that links to each other with the control basal plate 33 of having carried control circuit, obtain circle 57 along the displacement of axletree 20 directions as variation inductance.That is to say that this variation inductance inputs to control basal plate 33 as the electric signal of expression manpower torque, based on this signal value control motor 40.

Like this, owing to adopted contraction according to coil spring 55, i.e. the size of manpower moment of torsion, therefore the circle 57 that displacement changes, can change the inductance of coil 60 according to the size of manpower moment of torsion, can be the big or small electricity consumption signal output of manpower moment of torsion.

The structure of the rotor 42 of above-mentioned electrical motor 40 then, is described with Fig. 7～Figure 13.In addition, the symbolic representation identical part identical with above-mentioned Fig. 1～Fig. 6.

The rotor 42 of this electrical motor 40 is made up of inner ring 44 that forms with other parts and outer ring 45 as mentioned above, and inner ring 44 is made of the aluminum alloy of lightweight component, and outer ring 45 is made of the silicon steel plate of lamination.

In addition, on inner ring 44, shown in Figure 11 waits, be formed with protuberance 44a at certain intervals in a plurality of positions of periphery.In addition, inner ring 44, except that the part that has formed raised part 44a, all form thin-wall construction between its peripheral part and the interior perimembranous, simultaneously, form hole 44b～44e respectively forming the thin-wall position, to form volume and the identical and variform hole of other slotted hole 44b (be big small sircle hole 44c～44e) in the present embodiment position therein.

According to above formation, the aluminum alloy of adding with lightweight component forms the lightweight that inner ring 44 obtains, and neither damages intensity and has realized further lightweight again.

And, being formed with the 44f of blade of a sword portion at the one-sided peripheral part of inner ring 44, the part that forms at protuberance 44a is formed with notch 44g.

In addition, shown in Figure 12 waits, on outer ring 45, on a plurality of magnetic pole piece 45a that give prominence to periphery, be formed with elongated hole 45b, in the 45b of each hole, be pressed into the iron plate 46 that magnet is used.

In addition, interior all sides of 45 in the outer ring are formed with the recess 45c of the protuberance 44a that is pressed into above-mentioned inner ring 44, and chimeric each protuberance 44a and the recess 45c in inner ring 44 and outer ring 45 shown in Figure 10 waits, is pressed into to the part of the 44f of blade of a sword portion that forms inner ring 44.Therefore, can carry out the assembling of rotor 42 simply.

And when above-mentioned being pressed into, the aluminum alloy smear metal that cuts out on the protuberance 44a of the inner ring 44 that is formed by aluminum alloy is discharged by notch 44g.Like this, even form the blade of a sword 44f of portion, also the smear metal that can be cut out by protuberance 44a when being pressed into is discharged from notch 44g, thereby has further simplified assembling.

The magnetization of the iron plate 46 of above-mentioned rotor 42 is after integral body is pressed into, with the variform hole 44c location of inner ring 44 and be fixed on the magnetization instrument and carry out.Even like this, form variform hole 44c～44e with hole 44b～44e, the location in the time of can magnetizing simply by effectively utilizing lightweight.In addition, owing to variform hole 44c～44e forms in the volume mode identical with other hole 44b, so can obtain good spin balancing.

Stack-mounted electrical motor 40 is configured in the stationary housing 31 fixing on the axletree 20 in the rotary shell 23 of trailing wheel 14 rotations as mentioned above like this.Stationary housing 31 is made of main part 31a and cap 31b as mentioned above, and electrical motor 40 is configured on the main part 31a, install to constitute big belt pulley 34, the stretching belt pulley 38 of speed reduction gearing and be configured in control basal plate 33 in the substrate box 32 on cap 31b.In the outside of substrate box 32 (dorsal part), the Hall unit 49 of the position probing of carrying out rotor 42 is installed, carry out the detection of the rotor magnetic pole position that direct motor drive uses.Substrate box 32 is located on cap 31b, and is fixed by bolts on the cap 31b, and in addition, Hall unit 49 is also located on substrate box 32 in advance, and is installed on the substrate box 32.

When assembling stationary housing 31, at first be assembled into after on main part 31a and the cap 31b state of each parts being installed, cap 31b is installed on the main part 31a.Like this, finish the location of rotor 42 and Hall unit 49.

Therefore,, can improve assembleability, can carry out the location of rotor 42 and Hall unit 49 simultaneously reliably, detect the position of magnetic pole of correct rotor 42 by effectively utilizing substrate box 32.

In addition, cap 31b is installed on the main part 31a, the wire wrap terminal 41a of stator 41 exposes from the terminal hole 31p that is formed at cap 31b, connects by what the leadout hole 31q that forms on cap 31b drew to give electricity terminal 33a from control basal plate 33 on this wire wrap terminal 41a.Like this, the wire wrap terminal 41a of stator 40 and control basal plate 33 gives the be connected end of electricity with terminal 33a.

As mentioned above, because after cap 31b was installed, the electricity of giving that connects control basal plate 33 on the wire wrap terminal 41a of stator 41 was used terminal 33a, therefore, wire relaxes can not interfere with rotor 42, can carry out distribution simply, and the connection processing of distribution is also carried out easily.

The following describes the transmission of power of the electronic assistance bicycle that constitutes as mentioned above.

The transmission of manpower propulsive effort at first is described.

In case from pedal 5 input manpower propulsive efforts, the preceding sprocket wheel 12 that is fixed on the pedal 5 rotates, and makes 22 rotations of back sprocket wheel by chain 13.In case back sprocket wheel 22 rotation, by the free-wheel clutch (not shown) only to a direction transferring power.

When transmitting the power of travel direction, after the change-speed box 21 of the gear ratio by having set user's indication carries out speed change, the spring 55 that constitutes torque sensor is shunk, make rotary shell 23 (23a) rotation simultaneously, thereby trailing wheel 14 is rotated.

Secondly, the transmission of electric driving force is described.

The displacement of the circle 57 by above-mentioned torque sensor, the variation inductance that is detected by coil 60 inputs to the microcomputer of control basal plate 33 as electric signal.Then, based on this signal value, give the driving circuit output signal of electrical motor 40, by the switch of the FET in the driving circuit, make the pole change of stator 41 produce rotating field, thereby by being arranged on the magnet 46 on the rotor 42, rotor 42 rotations, rotary driving motor 40.The rotary driving force of electrical motor 40 slows down by the speed reduction gearing of being made up of small belt pulley 47, big belt pulley 34, free-wheel clutch 36, miniature gears 37 and big gear wheel 25, and rotary shell 23 (23b) is rotated, thereby trailing wheel 14 is rotated.

As mentioned above, because manpower propulsive effort and electric driving force make a concerted effort to drive trailing wheel 14 by rotary shell 23 (23a, 23b), therefore, add treadle 5 the cooresponding electric driving force of power, even also can travel like a cork in ramp etc. with the user.

In addition, in the present embodiment, be installed on the built in type change-speed box 21 by the rotor 42 of bearing 43 electrical motor 40, this built in type change-speed box 21 is installed on the axletree 20 of trailing wheel 14, therefore, can be effectively the built in type change-speed box 21 of axletree 20 axle as electrical motor 40 be used, and because electrical motor 40 itself also by the said structure lightweight, thereby can be realized light weight and compact electronic assistance bicycle.

In addition, in the above-described embodiment, though show the situation that the present invention is applicable to electronic assistance bicycle,, be used to assist formula battery-driven car etc. effective too by the vehicle of electrical motor assistive drive.

In addition, in the above-described embodiment, be suitable for situation of the present invention though show the structure that on axletree 20, is equipped with built in type change-speed box 21,, the present invention also can be used for not being provided with on the axletree structure of change-speed box.

In addition, position detecting device as rotor 42, though show the situation of using general Hall unit 49, also incorporate hall integrated circuit of the comparator that can use Hall unit and wave shaping to use or the optical chopper formed by luminary and photoreceptor etc.

As mentioned above according to the present invention, have the electric driving part of the above-mentioned wheel of direct motor drive of the manpower drive division of using the manpower drive wheels and the rotating field of controlling stator by the position of magnetic pole of detection rotor, be useful on the substrate box of configuration control basal plate in the cap installed inside of the housing that covers above-mentioned electrical motor, the position detecting device of detection rotor position of magnetic pole on the face relative, is equipped with the above-mentioned rotor of this substrate box, thereby can effectively utilize substrate box, the position detecting device of rotor is installed simply, therefore improved assembleability, in addition, the location of position detecting device also becomes easy.

In addition, by be made of above-mentioned position detecting device Hall unit, the enough simple structures of energy are carried out the position probing of rotor.

And, the aforesaid substrate box is in the location, inboard and the installation of above-mentioned cap, in addition, above-mentioned position detecting device is located on the aforesaid substrate box and is installed, thereby, the cap that substrate box is housed is installed on the housing that electrical motor has been installed, thereby must have determined the position of position detecting device, therefore can detect the position of magnetic pole of correct rotor.

On the other hand, by having with the manpower drive division of manpower drive wheels with the electric driving part of the above-mentioned wheel of direct motor drive, connecting portion is equipped with, this connecting portion is in the inboard configuration of the cap control basal plate of the housing that covers above-mentioned electrical motor, simultaneously after on the above-mentioned housing cap being installed, connect the coiling of electrical motor and the distribution of control basal plate, thereby owing to be connected with the coiling of electrical motor having installed behind the cap, therefore connect distribution (lead) and rotor does not interfere, can carry out distribution simply.

In addition, as above-mentioned connecting portion, on cap, formed the wire wrap terminal that is used to make electrical motor and be exposed to the terminal hole in the cap outside and be used for and export to the leadout hole in the cap outside from the distribution terminal of control substrate, thereby can handle the connection of distribution simply.

Claims (4)

1, a kind of vehicle with auxiliary power, it is characterized in that, the electric driving part that comprises the described wheel of direct motor drive of manpower drive division of taking turns and the rotating field of controlling stator by the position of magnetic pole of detection rotor by Manpower propulsion of bicycle, be useful on the substrate box that disposes control basal plate in the housing cap installed inside that covers described electrical motor, on the face relative on this substrate box, be equipped with the position detecting device that detects described rotor magnetic pole position with described rotor.

2, the vehicle of band auxiliary power according to claim 1 is characterized in that, described position detecting device is made of Hall unit.

3, the vehicle of band auxiliary power according to claim 1, it is characterized in that, also comprise connecting portion, this connecting portion has the control basal plate in the inboard configuration of cap of the housing that covers described electrical motor, with the distribution of coiling that is connected described electrical motor and control basal plate.

4, the vehicle of band auxiliary power according to claim 3, it is characterized in that, as described connecting portion, be formed for making the wire wrap terminal of described electrical motor to be exposed to the terminal hole in the cap outside and be used for the distribution terminal from described control basal plate is exported to the leadout hole in the cap outside at described cap.

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