JP2002220078A - Vehicle with assisting power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach a rotor position detecting means to enhance assemblage, and to easily position the position detecting means to arrange in an accurate position. SOLUTION: This vehicle 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.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle with an auxiliary power, such as an electric power assisted bicycle, and more particularly to a motor thereof.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Application Publication No. 2000-105155 (G01L 3/14) discloses this type of vehicle with auxiliary power.
In the motor-assisted bicycle disclosed in Japanese Patent Application Laid-Open No. H11-260, a fixed casing fixed to an axle is arranged in a rotating casing constituting a rear wheel hub, and a DC brushless motor is mounted therein. The position detection sensor for detecting the magnetic pole position of the rotor is mounted on the inner wall of the fixed casing, and the control board is disposed outside the fixed casing. Further, the above publication discloses an embodiment in which a control board is attached to a lid of a fixed casing.

[0003]

However, according to the above-mentioned publication, the position detection sensor must be attached to the inner wall of the fixed casing facing the rotor after assembling the motor in the fixed casing. In addition, since positioning is difficult and mounting errors are likely to occur, accurate position detection may not be performed.

When a control board is attached to a lid of a fixed casing in which a motor is built, generally, the motor windings and the control board must be connected by lead wires before the lid is attached to the fixed casing. Therefore, when the lid is attached to the fixed casing, the lead wire may be loosened, and the rotating rotor may interfere with the lead wire.

Accordingly, the present invention has been made to solve such a problem, and the position detecting means of the rotor can be easily attached to improve the assemblability, and the position of the position detecting means can be easily positioned. It is an object of the present invention to provide a vehicle with auxiliary power that can be arranged at a precise position.

It is another object of the present invention to provide a vehicle with an auxiliary power that can be easily wired without wiring between a motor winding and a control board interfering with a rotor.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a human-powered drive unit for driving wheels by human power and a rotating magnetic field of a stator by detecting a magnetic pole position of a rotor. An electric drive unit for driving the wheels by a motor, and a substrate case for arranging a control substrate inside a cover part of a casing covering the motor is attached. The rotor case is provided on a surface of the substrate case facing the rotor. And a position detecting means for detecting the position of the magnetic pole.

The position detecting means is constituted by a Hall element.

Further, the substrate case is characterized in that it is positioned and mounted inside the lid.

Further, the position detecting means is positioned and attached to the substrate case.

On the other hand, there is provided a human-powered drive unit for driving the wheels by human power, and an electric drive unit for driving the wheels by a motor. A control board is disposed inside a lid of a casing that covers the motor, and a control board is provided on the casing. After the lid is attached, a connection portion for connecting the winding of the motor and the wiring of the control board is provided.

[0012] Further, as the connection portion, a terminal hole for exposing the winding terminal of the motor to the outside of the cover portion, and a terminal for leading a wiring terminal from the control board to the outside of the cover portion are provided in the cover portion. The outlet hole is formed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described using an electric assist bicycle as an example.

First, the configuration of the entire electric assist bicycle will be described with reference to FIG.

In this electric assist bicycle, a head pipe 1 provided at a front portion and a seat tube 3 to which a saddle 2 is attached are connected by a main frame 4, and the main frame 4 and the seat tube 3 are connected. A pedal 5 that rotates by human power is attached to the portion.

The head pipe 1 includes a head pipe 1
A steering wheel 6 and a front wheel 7 for determining a traveling direction by operating the steering wheel are attached so as to be connected to each other. In the drawing, only the rim 8 of the front wheel 7 and the tire 9 are shown, and the spokes are not shown.

A battery 11 serving as a power source for a motor or the like, which will be described later, is mounted below the front cage 10 mounted on the head pipe 1. The battery 11 is a 24-volt NiCd battery. I have. The battery 11 is housed in a battery case and can be removed, and can be removed and charged indoors when charging.

A front sprocket 12 which rotates together with the pedal 5 is attached to the pedal 5. A chain 13 is mounted on the front sprocket 12, and rotation of the front sprocket 12 is transmitted through the chain 13 to a rear wheel 14 through the chain 13.
Is provided on an axle (not shown) and transmitted to a sprocket.

The rear wheel 14, which is a driving wheel, includes a tire 15, a rim 16, spokes (not shown), and a driving unit 17 for driving the rear wheel 14. As will be described later, the drive unit 17 includes a torque detection unit (torque sensor) that detects human-powered torque transmitted via the chain 13, an electric drive unit including a motor and a reduction mechanism, and a detection value of the torque detection unit. And a brake circuit 1 that brakes the rear wheel 14 by operating a brake lever 18 attached to the handle 6 and a control circuit including a microcomputer that outputs a drive signal to the motor by inputting a signal.
9 is attached.

As described above, the rear wheel 14 is composed of two parts: a human-powered drive unit including the pedal 5, the front sprocket 12, the chain 13, the rear sprocket, and a transmission; and an electric drive unit including a motor and a speed reduction mechanism. It is driven by a drive unit, and can travel together with them.

Next, the driving unit 1 of the electric assist bicycle
7 will be described in detail with reference to FIGS.

The axle 20 of the rear wheel 14 is provided with a built-in transmission 21 similar to that of a normal bicycle at a part of its length in the longitudinal direction. ), The power is transmitted only by rotation of the pedal 5 in one direction, and when the pedal 5 is rotated in the reverse direction, the power transmission to the transmission 21 is cut off.

The internal transmission 21 is covered with a rotary casing 23 which forms a hub of the rear wheel 14 around the axle 20.
The rotating casing 23 is composed of two parts, one of which is a rotating casing 23a formed with two annular ribs 24a and 24b for attaching spokes on the outer periphery.
The other is a rotating casing 23b screwed and fixed to the annular rib 24b at a plurality of locations so as to close the opening of the rotating casing 23a.

A large gear 25 constituting the final stage of the speed reduction mechanism is fixed to the inside of the other rotary casing 23b by screws, and a brake holder 26 is fixed to the outside by screws so as to be concentric with the axle 20. Brake holder 26
A rotating piece 27 having a disk-shaped upright wall formed toward the outside of the rotating casing 23b is attached to the rotating piece 23 by screws, welding, or the like. A brake device 19 is provided for slidingly contacting the inner periphery of the rotary piece 27 to brake the rotation of the rotary casing 23. These rotating pieces 27
The brake device 19 is covered with a brake cover 28.

A cord 29 such as a power supply line and other signal lines from the battery 11 passes through the brake cover 28,
A part of the cover 31b of the fixed casing 31 that constitutes the electric drive unit 30 is inserted through a cutout portion, and is connected to a control board 33 in a board case 32 attached inside the cover 31b of the fixed casing 31. I have.

The fixed casing 31 includes a main body 31a for covering a DC brushless motor, which will be described later, and the control board 33.
And a cover 31b to which a large pulley 34 and the like constituting a speed reduction mechanism are attached by screws. The main body 31a is attached to the outer periphery of the transmission 21 via a bearing 35, and the lid 31b is fixed to a portion of the axle 20 where the transmission 21 is not provided, with a tubular portion 31c protruding outward. Since the control board 33 is covered with the board case 32 and attached to the lid 31b made of an aluminum alloy or the like having good thermal conductivity, heat generated from the control board 33 is radiated through the lid 31b. You.

A stator 41 constituting the DC brushless motor 40 is mounted on the inner surface of the main body 31a of the fixed casing 31, and the stator 41 is formed by winding a winding around an iron core forming 18 slots. . The stator 3 has a cover 3 of the fixed casing 31.
Electric power for forming a three-phase rotating magnetic field is supplied via a control board 33 in a board case 32 attached inside 1b.

On the inner peripheral side of the stator 41, a rotor 4
2 is rotatably provided on the outer periphery of the transmission 21 via two bearings 43, 43. The rotor 42 includes an inner ring 44 formed of a lightweight aluminum alloy and an outer ring 45 formed of a laminated silicon steel plate.
A plurality of magnets 46 forming magnetic poles are embedded in the outer peripheral portion of 5, and a small toothed pulley 47 is attached to the inner ring 44 so as to protrude toward the lid 31b.

Small pulley 47 provided on the rotor 42
A belt B is applied between a large pulley 34 and a tension pulley 38 (shown in FIG. 5) attached to the inside of the lid 31b of the fixed casing 31 via a one-way clutch 36. Each of the pulleys 47, 34, and 38 and the belt B are toothed so that slippage does not occur. The output shaft of the large pulley 34 protrudes outside the lid 31b to form a small gear 37.
Are configured to mesh with a large gear 25 mounted inside the rotary casing 23b. Accordingly, the rotation of the rotor 42 is reduced and transmitted to the rotary casing 23b via the small pulley 47, the large pulley 34, the one-way clutch 36, the small gear 37 and the large gear 25. Note that a large gear 25 attached inside the rotating casing 23b,
A bearing 39 is provided between the fixed casing 31 and the outer periphery of the cylindrical portion 31c that protrudes outward from the lid 31b and is fixed to the axle 20.

As described above, since the speed reduction mechanism at the output stage of the motor 40, which rotates quickly and easily generates a large gear sound, is constituted by the pulleys 47, 34, and 38 and the belt B, the noise generated by the speed reduction mechanism is reduced. Can be reduced.

As shown in FIG. 2, the large pulley 34 is attached to the inside of the lid 31b by a holding member 31d. The holding member 31d is formed so as to extend from the large pulley 34 to the mounting position of the tension pulley 38 (mounting hole 31n). At the mounting position of the tension pulley 38, the tension pulley 38 is rotated by a screw 38a (shown in FIG. 5). A screw hole 38b for free attachment is formed. The holding member 31d to which the large pulley 34 is attached is
With the belt B on the large pulley 34, each pulley 3
The cover 31 at a position where the belt B does not contact the belts 4 and 38
b Screw-fixed to the back side as shown in FIG.

After the tension pulley 38 is assembled by screwing the lid 31b to the main body 31a of the fixed casing 31, the tension pulley 38 is inserted into the lid 31b from the mounting hole 31n formed to be larger than the diameter of the tension pulley 38, and It is attached to the screw hole 38b of the holding member 31d so as to be rotatable with the screw 38a.

On the back side of the board case 32 in which the control board 33 is accommodated, a Hall element 49 for detecting a magnetic pole position of the rotor 42 necessary for controlling the drive of the DC brushless motor 40 is provided with a rotor 42. Magnet 4
The detection signal of the Hall element 49 is input to a microcomputer mounted on the control board 33 to generate a motor control signal. In order to control the three-phase rotating magnetic field, three Hall elements 49 are arranged on a substrate 49a at predetermined intervals as shown in FIG. Positioned and mounted. By using the Hall element 49 as the position detecting means of the rotor 42, the magnetic pole of the magnet 46 of the rotor 42 can be directly detected. With this configuration, the position of the magnetic pole of the rotor 42 can be detected.

As shown in FIGS. 3 and 4, three winding terminals 41a of the stator 41 for generating a three-phase rotating magnetic field.
Are disposed so as to protrude from the stator 41 in the direction of the lid 31b. Correspondingly, the lid 31b has three terminal holes 31p for exposing the winding terminals 41a to the outside of the lid 31b. Are formed. Further, three wiring terminals 33 from a control board 33 for supplying electric power for generating a three-phase rotating magnetic field to the stator 41 are provided on the lid 31b.
A lead-out hole 31q for leading out a to the outside of the lid 31b is formed, and each lead-out wiring terminal 33a is connected to the winding terminal 41a exposed from each terminal hole 31p.

On the other hand, the rear sprocket 2 to which human power is transmitted
A sensor plate 51 for a torque sensor, which is located inside the rotary casing 23a and detects human torque, is fixed to the outer periphery of the transmission 21 on the second side. A packing 52 is attached to the periphery of the opening of the rotary casing 23a so as to be in sliding contact with the sensor plate 51 to take measures such as waterproofing and dustproofing.

Inside the sensor plate 51, there is provided a sensor case 54 attached to the outer periphery of the transmission 21 via a bearing 53 and fixed to the rotary casing 23a with screws. The case 54 is connected via a coil spring 55 interposed between a holding pin 51 a fixed to the sensor plate 51 and a storage portion 54 a provided in the sensor case 54. That is, when the manual driving force is transmitted from the transmission 21 to the sensor plate 51, the coil spring 55 is contracted by a contraction amount corresponding to the magnitude of the manual torque,
The rotary casing 23a is rotated via the sensor case 54.

Inside the sensor case 54, an arc-shaped aluminum ring 5 is slidably mounted on the outer periphery of a ring holder 56.
The ring 57 is attached to the pin 57 at several places on the outer periphery of the ring 57 by being fitted to the pin 58.
The coin spring 59 has an urging force in the direction of spreading.
Is inserted. Further, the ring 57 comes into contact with an inclined surface (not shown) formed on the ring holder 56, and the sensor plate 51 and the ring 57 are displaced in the rotation direction when human force is applied. ,
The ring 57 moves in the axle direction along the inclined surface of the ring holder 56 while rotating. A coil 60 connected to the control board 33 on which the control circuit is mounted is mounted on the ring
7, the displacement in the direction of the axle 20 is taken as a change in inductance. That is, the change in the inductance is taken into the control board 33 as an electric signal indicating the magnitude of the manual torque, and the motor 4 is controlled based on the signal value.
0 is controlled.

As described above, since the ring 57 whose displacement is changed according to the contraction of the coil spring 55, that is, the magnitude of the manpower torque is used, the inductance of the coil 60 can be changed according to the magnitude of the manpower torque. Can be output as an electric signal.

Next, the structure of the rotor 42 of the motor 40 will be described with reference to FIGS. The same reference numerals as those in FIGS. 1 to 6 indicate the same parts.

The rotor 42 of the motor 40 has an inner ring 44 and an outer ring 45 formed of separate members as described above.
The inner ring 44 is made of an aluminum alloy which is a lightweight member, and the outer ring 45 is made of a laminated silicon steel plate.

As shown in FIG. 11 and the like, the inner ring 44 is provided with a plurality of convex portions 44a at a plurality of locations on the outer periphery thereof at regular intervals. The inner ring 44 has a thin portion between the outer peripheral portion and the inner peripheral portion except for a portion where the convex portion 44a is formed, and holes 44b to 44e are formed in the thin portion. At one location, holes having the same volume as the other long holes 44b and different shapes (in the present embodiment, large and small round holes 44c to 44e) are formed.

With this configuration, in addition to the weight reduction by forming the inner ring 44 from an aluminum alloy which is a lightweight member, it is possible to further reduce the weight without deteriorating the strength.

Further, a flange portion 44f is formed on one outer peripheral portion of the inner ring 44, and a cutout portion 44g is formed in a portion where the convex portion 44a is formed.

In the outer ring 45, as shown in FIG. 12 and the like, elongated holes 45b are formed in a plurality of magnetic pole portions 45a projecting from the outer periphery, and a magnet iron plate 46 is press-fitted in each of the holes 45b. You.

A concave portion 45c into which the convex portion 44a of the inner ring 44 is press-fitted is formed on the inner peripheral side of the outer ring 45, and the inner ring 44 and the outer ring 45 are respectively formed with the convex portion 44a and the concave portion 45c. And press-fitted to the portion of the inner ring 44 where the flange 44f is formed as shown in FIG. Accordingly, the rotor 42 can be easily assembled.

Further, at the time of the press-fitting, aluminum chips cut out from the convex portion 44a of the inner ring 44 formed of an aluminum alloy are discharged from the notch portion 44g. As described above, even when the flange portion 44f is formed, the chips coming out of the convex portion 44a at the time of press-fitting can be discharged from the notch portion 44g, so that the assembly is further simplified.

The magnetizing of the iron plate 46 of the rotor 42 is performed after all the press-fitting is performed.
4c is positioned and fixed to a magnetizing jig.
Also in this case, the holes 44c to 44e having different shapes are formed by effectively utilizing the holes 44b to 44e for weight reduction.
Positioning during magnetization can be easily performed. Further, since the holes 44c to 44e having different shapes are formed so as to have the same volume as the other holes 44b, a good rotation balance can be obtained.

The motor 40 thus assembled
Is a fixed casing 31 fixed to the axle 20 in the rotating casing 23 which rotates together with the rear wheel 14 as described above.
Is placed within. The fixed casing 31 includes the main body 31a and the lid 31b as described above. The motor 40 is disposed on the main body 31a. A control board 33 arranged in the inside 32 is attached. A Hall element 49 for detecting the position of the rotor 42 is attached to the outside (back side) of the board case 32, and the position of the rotor magnetic pole for driving the motor is detected. The board case 32 is positioned on the lid 31b and fixed by screws, and the hall element 49 is also positioned and mounted on the board case 32 in advance.

When assembling the fixed casing 31,
First, after assembling until the respective parts are attached to the main body 31a and the lid 31b, the lid 31b is attached to the main body 31a. Thus, the positioning of the rotor 42 and the Hall element 49 is completed.

Therefore, by utilizing the board case 32 effectively, the assemblability is improved, the rotor 42 and the Hall element 49 can be reliably positioned, and the magnetic pole position of the rotor 42 can be accurately detected.

When the cover 31b is attached to the main body 31a, the winding terminals 41a of the stator 41 are exposed from the terminal holes 31p formed in the cover 31b.
A power supply terminal 33a from the control board 33 which is drawn out through a lead hole 31q formed in the lid 31b is connected to the winding terminal 41a. This completes the connection between the winding terminal 41a of the stator 40 and the power supply terminal 33a of the control board 33.

As described above, the power supply terminal 33a of the control board 33 is connected to the winding terminal 41a of the stator 41 after the lid 31b is attached, so that the lead wire does not loosen and interfere with the rotor 42. In addition, wiring can be easily performed, and connection processing of the wiring can be easily performed.

Next, the power transmission of the electric assist bicycle configured as described above will be described.

First, transmission of human driving force will be described.

When the manual driving force is input from the pedal 5,
The front sprocket 12 fixed to the pedal 5 rotates, and the rear sprocket 22 rotates via the chain 13. When the rear sprocket 22 rotates, power is transmitted only in one direction by a one-way clutch (not shown).

When the power in the traveling direction is transmitted, the speed is shifted by the transmission 21 set to the gear ratio specified by the user, and then the rotating casing 23 (23a) is contracted while the spring 55 constituting the torque sensor is contracted. And the rear wheel 14 can be rotated.

Next, transmission of the electric driving force will be described.

The change in inductance detected by the coil 60 due to the displacement of the ring 57 of the torque sensor is input to the microcomputer of the control board 33 as an electric signal. A signal is output to the drive circuit of the motor 40 based on the signal value, and the polarity of the stator 41 is changed by turning on and off the FET in the drive circuit to generate a rotating magnetic field.
This causes the rotor 42 to rotate, and the motor 40 to rotate. The rotational driving force of the motor 40 includes a small pulley 47, a large pulley 34, a one-way clutch 36, a small gear 37, and a large gear 2.
The rotation of the rotary casing 23 (23b) is reduced by the speed reduction mechanism composed of the rear wheel 5, and the rear wheel 14 is rotated.

As described above, the human driving force and the electric driving force are combined by the rotary casings 23 (23a, 23b) to drive the rear wheel 14, so that the driving force corresponding to the user's pressing force on the pedal 5 is determined. The electric driving force is applied, and the vehicle can travel easily even on a slope.

In this embodiment, the axle 2 of the rear wheel 14
Bearing 43 on the internal transmission 21 mounted on the
, The rotor 42 of the motor 40 is attached, the internal transmission 21 of the axle 20 is effectively used as the shaft of the motor 40, and the motor 40 itself is also reduced in weight by the above-described configuration. An electric assisted bicycle can be realized.

In the above embodiment, the case where the present invention is applied to an electric assist bicycle is shown. However, the present invention is effective when applied to a vehicle which is driven by a motor such as an assist type electric wheelchair.

Further, in the above embodiment, the case where the present invention is applied to the axle 20 provided with the internal transmission 21 has been described. However, the present invention can also be applied to the axle without the transmission.

As the position detecting means of the rotor 42,
Although an example using the general Hall element 49 has been described, a Hall IC in which a Hall element and a comparator for waveform shaping are integrated, a photointerrupter including a light emitter and a light receiver, or the like can also be used.

[0064]

As described above, according to the present invention, a human-powered drive unit that drives wheels by human power and an electric motor that drives the wheels by a motor that detects the magnetic pole position of the rotor and controls the rotating magnetic field of the stator. A drive unit, a board case for arranging a control board inside the cover of the casing covering the motor, and a position detecting means for detecting a magnetic pole position of the rotor on a surface of the board case facing the rotor. With this arrangement, the position detecting means of the rotor can be easily attached by effectively utilizing the substrate case, so that the assembling property is improved and the positioning of the position detecting means is also facilitated.

In addition, since the position detecting means is constituted by a Hall element, the position of the rotor can be detected with a simple structure.

Further, the substrate case is positioned and mounted inside the lid portion, and the position detecting means is positioned and mounted on the substrate case. Therefore, the substrate case is mounted on a casing on which a motor is mounted. Since the position of the position detecting means is inevitably determined by attaching the attached lid, accurate detection of the magnetic pole position of the rotor becomes possible.

On the other hand, a manual drive unit for driving the wheels by human power and an electric drive unit for driving the wheels by a motor are provided. A control board is disposed inside a lid of a casing that covers the motor, and a control board is provided on the casing. By providing a connection for connecting the motor winding and the wiring of the control board after the lid is attached, the connection is made to the motor winding after the lid is attached, so that the rotor and the connection wiring (lead wire) Can be easily wired without interference.

Further, as the connection section, a terminal hole for exposing the winding terminal of the motor to the outside of the cover and a lead hole for leading a wiring terminal from the control board to the outside of the cover are provided in the cover. Due to the formation, the connection of the wiring can be easily processed.

[Brief description of the drawings]

FIG. 1 is an essential part cross-sectional view of a drive unit of an electric assist bicycle according to an embodiment of the present invention.

FIG. 2 is a rear view of a lid of the fixed casing in the embodiment.

FIG. 3 is a plan view of the fixed casing as viewed from the lid side.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a schematic plan view showing a state in which a belt is applied to a small pulley, a large pulley, and a tension pulley that constitute the speed reduction mechanism of the embodiment.

FIG. 6 is a central sectional view of FIG. 5;

FIG. 7 is an exploded cross-sectional view showing a rotor portion of a motor attached to the transmission of the embodiment.

FIG. 8 is an enlarged sectional view of a rotor portion of the motor.

FIG. 9 is a plan view of the rotor.

FIG. 10 is a center sectional view of the rotor of FIG. 9;

FIG. 11 is a plan view of an inner ring of the rotor.

FIG. 12 is a plan view of an outer ring of the rotor.

FIG. 13 is a side view of the outer ring of the rotor.

FIG. 14 is a side view showing the overall configuration of the electric assist bicycle to which the present invention is applied.

[Explanation of symbols]

 Reference Signs List 5 pedal 11 battery 12 front sprocket 13 chain 14 rear wheel 17 drive unit 20 axle 21 internal transmission 22 rear sprocket 23, 23a, 23b rotary casing 25 large gear 30 electric drive unit 31 fixed casing 31a main unit 31b lid 31c cylinder Shaped part 31d Holding member 31n Mounting hole 31p Terminal hole 31q Outlet hole 33 Control board 33a Wiring terminal 34 Large pulley 36 One-way clutch 37 Small gear 38 Tension pulley 40 DC brushless motor 41 Stator 41a Winding terminal 42 Rotor 46 Magnet 47 Small pulley 49 Hall element 49a Substrate B belt

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiji Yamaguchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kazuhisa Matsumoto 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. F term (reference) 5H019 AA10 BB01 BB05 BB15 BB20 BB22 CC03 CC09 DD01 EE01 EE14 FF00 FF01 5H604 AA08 BB01 BB14 BB17 CC01 CC05 CC16 QB03 5H611 AA01 BB08 PP05 QQ03 UA02

Claims (6)

[Claims] 1. A motor drive unit for driving wheels by human power, and an electric drive unit for driving the wheels by a motor that detects a magnetic pole position of a rotor and controls a rotating magnetic field of a stator, and covers the motor. An auxiliary power, comprising: a substrate case for mounting a control substrate inside the lid portion of the casing; and a position detecting means for detecting a magnetic pole position of the rotor on a surface of the substrate case facing the rotor. With vehicle. 2. The vehicle with auxiliary power according to claim 1, wherein said position detecting means is constituted by a hall element. 3. The vehicle with auxiliary power according to claim 1, wherein the board case is positioned and mounted inside the lid. 4. The vehicle with auxiliary power according to claim 3, wherein said position detecting means is positioned and attached to said board case. 5. A motor drive unit for driving wheels by human power, and an electric drive unit for driving the wheels by a motor, wherein a control board is disposed inside a lid of a casing that covers the motor, and a control board is provided on the casing. A vehicle with auxiliary power, comprising: a connecting portion for connecting a winding of the motor and a wiring of a control board after attaching a lid portion. 6. A terminal hole for exposing a winding terminal of the motor to the outside of the lid as the connection portion, and a terminal for leading a wiring terminal from the control board to the outside of the lid. The vehicle with auxiliary power according to claim 5, wherein an outlet hole is formed.