JPH10129570A - Vehicle with auxiliary power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make theft difficult to occur by providing an electromagnetic brake for releasing braking action at the time of electrification, and mounting a battery on a main body to electrify the electromagnetic brake. SOLUTION: Connecting a battery 11 to a circuit makes a coil 66 into a condition for electrification, and turning on a key switch 19 and a push switch 25 draws a brake plate 64 near to the coil 66 side to part the brake plate 64 from a brake piece to make a rear wheel rotatable. Turning OFF the key switch 19 or the push switch 25 causes the nonelectrification between the brake plate 64 and the coil 66 to maintain a condition where the wheel is braked. When the electrification between the battery 11 and an electromagnetic brake 61 is started by the key switch 19 at the time of the strat of travel, the brake plate 64 is parted from the brake piece by the action of the electromagnet 66 to release braking. Consequently, the electromagnetic brake 61 can not be released unless the battery 11 is unfixed to turn ON the push switch 25 even if the key switch 19 is broken to be turned ON.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle with auxiliary power, which has both manual driving by human power and electric driving by electric motor driven by a battery as a power source, and which can travel by using both powers.

[0002]

2. Description of the Related Art Conventionally, this kind of vehicle with auxiliary power has a human-powered drive unit using a pedal drive force and a motor drive force, as in an electric bicycle disclosed in Japanese Patent Application Laid-Open No. 8-11772 (B62M23 / 02). There is known an electric driving unit which includes an electric driving unit according to the present invention, and which can apply an electric driving force of the same magnitude as that of the human driving unit to reduce the human driving force to half that of a normal bicycle.

[0003] In this type of electric bicycle, a power switch for interrupting the energization of the electric driving unit is provided in an energizing circuit, and the energization is turned on and off by rotating a key switch for interrupting the power switch. Methods are known. In this case, the power switch is turned on by the key switch.
When it is set to N, the electric drive unit becomes operable and operates as an electric bicycle, and when turned off, it operates as a normal bicycle.

However, when an electric bicycle provided with such a switch is stopped at a bicycle parking lot or the like,
Normally, the electric drive does not operate because the key is removed from the switch and the power switch is turned off to leave the bicycle.However, since the manual drive is not related to ON / OFF of the power switch, only the human drive should be operated. There was a problem that it was easy to drive and carry it, and it was easy to be stolen.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a vehicle with an auxiliary power which is less likely to be stolen.

[0006]

SUMMARY OF THE INVENTION The present invention provides a human-powered driving unit using a human-powered driving source, an electric driving unit using a motor driven by a battery detachably mounted on the main body as a power source, and the human-powered driving unit. And a wheel including a drive wheel rotated by an electric drive unit, an electromagnetic brake for releasing a braking operation when energized is provided on at least one wheel, and the electromagnetic brake is energized by attaching the battery to the main body. It is characterized by the following.

With such a configuration, the vehicle cannot be moved by manual driving when the battery is removed. That is, the vehicle cannot be carried when the battery is removed and the vehicle is away from the vehicle.

Further, a switch means for interrupting the current path is provided in the current path between the battery and the electromagnetic brake, and the switch means also has a power switch for interrupting the power supply to the motor.

With this configuration, even when the user is away from the bicycle with the battery mounted, the electromagnetic brake cannot be released unless the switch is closed. Further, since the switch for operating the motor and the release of the electromagnetic brake are shared, theft can be prevented with a simple configuration.

The switch means also has a lock mechanism for fixing the battery to the main body, and is provided with a key for operating the lock mechanism.

With the above configuration, even if the electromagnetic brake can be released, the auxiliary power does not work without the key.

Further, a lock mechanism for fixedly mounting the battery on the main body is provided, and the switch means is provided on a mounting surface on which the battery is mounted.

With such a configuration, the electromagnetic brake cannot be released unless the battery is removed, so that it is difficult for theft to be stolen.

Further, the lock mechanism is provided with a key for releasing the fixed attachment of the battery to the main body. Therefore, the battery cannot be removed without the key, that is, the electromagnetic brake cannot be released without the key. Can not.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS.

First, the overall structure of the electric bicycle will be described with reference to FIG.

1 is a head pipe 2 provided at the front part,
A body composed of a main frame that connects a seat tube 4 provided below the saddle 3 with a pedal 5 that can be manually rotated at a portion where the seat tube 4 is connected. ing.

Reference numeral 6 denotes a front wheel that moves in the left and right direction by operating the handle 7 in association with the movement of the handle 7. Reference numeral 8 denotes a rear wheel serving as a drive wheel. A driving unit 9 for performing the operation is provided.

Reference numeral 10 denotes a chain that is moved by the rotation of the pedal 5. The chain 10 is provided on the axle of the drive unit 9 and transmits power to a sprocket 32.

Reference numeral 11 denotes a battery serving as a power supply for the motor 53.
The battery 11 is removable and can be charged indoors when charging.

Next, the configuration of the battery 11 will be described with reference to FIG.

FIG. 7A is a top cross-sectional view in which the upper surface of the battery 11 is partially cut, and FIG. 7B is a side cross-sectional view in which the side surface of the battery 11 is partially cut.

Reference numeral 12 denotes a battery pack in which 20 1.2-volt Ni-Cd cell batteries are connected in series. The battery pack 12 is contained in a battery case 13 made of synthetic resin. The battery pack 12 includes a charging terminal (not shown) and an output terminal (not shown), and the charging terminal is provided on the surface of the battery case 13 so as to be exposed. The output terminals are exposed from the bottom surface of the battery case 13 so as to contact the input terminals provided on the main body 1 to supply power. Further, the battery case 13 has a handle.
14 is provided rotatably with respect to the battery case 13,
When placed on the main body 1, it is integrated with the battery mounting table 15, and when removed, can be carried with the handle 14. Further, a hole 16 into which a pin 18 described later is fitted is formed in the front of the battery case 13.

Reference numeral 17 denotes a lock mechanism for fixing the battery 11 to the battery mounting table 15. The lock mechanism 17 is provided on the battery mounting table 15, and has a pin 18 fitted into the hole 16; The pin 18 is locked when the pin 18 is fitted into the hole 16 due to the inflow and outflow. At this time, a claw is formed on the side opposite to the lock mechanism 17 so that the battery
18 is prevented from falling upward.

Reference numeral 19 denotes a key switch also serving as a power switch. The key switch 19 has three contacts of ON, OFF, and battery release. The key switch 19 can be switched by inserting the key 20 into the key switch 19 and rotating the key. It has become. The key switch 19 is provided with a disk-shaped rotary plate 21 that rotates with the rotation of the key 20, and the rotary plate 21 is provided with a projection 22 at a position eccentric from the center of rotation. A moving body 23 made of rectangular resin is provided on the projection 22.
And a pin 18 is provided at the tip of the moving body 23. The rotation of the projection 22 causes the moving body 23 to move.
A guide 24 is provided so that the pin 18 moves horizontally. When the key switch 19 is turned on or off, the pin 18 moves horizontally by the rotation of the key 20 and fits into the hole 16 so that the battery
Pins 18 enter and exit so that 11 does not come off from battery mounting table 15. When the key switch 19 is operated to the position where the battery 11 is released, the pin 18 is moved out of the hole 16 by the movement of the pin 18, and the battery 11 can be removed from the battery mounting table 15. At this time, the moving body 23 that moves with the movement of the projection 22 is horizontal with respect to the rotation of the projection 22. This can be achieved by making the connection with the shaft rotatable.

Reference numeral 25 denotes a push switch provided at a position lower than the surface on which the battery 11 is mounted.
25 is connected in series with the key switch 19 between the battery 11 and the control circuit. The push switch 25 is switched on and off each time the push switch 25 is pressed. The push switch 25 maintains the ON state when pressed once, and maintains the OFF state when pressed again.

Reference numeral 26 denotes a fuse connected between the battery pack 12 and the output terminal.

Next, FIG. 2 and FIG. 3 show a specific configuration of the driving section 9 described above.

Reference numeral 27 denotes a disk-shaped fixed casing fixedly attached to the main frame. Reference numeral 28 denotes a rotating casing which is coaxial with the fixed casing 27 and rotates outside the fixed casing 27. These fixed side casings
The hub of the rear wheel 8 is configured by combining the rotation side casing 28 with the rotation side casing 28. The fixed side casing 27 and the rotating side casing 28 are formed of an aluminum alloy having a thickness of about 2 mm. Two annular ribs 29 are formed on the outer periphery of the rotating side casing 28, and spokes are extended from the annular rib 29 toward a rim to which a tire is attached.

Reference numeral 30 denotes a hub shaft-internal transmission (for example, SG-3531 manufactured by Shimano) provided on the axle. The transmission 30 is connected to a rear sprocket 32 via a ratchet 31. That is, the ratchet 31 allows the human power from the chain 10 to be applied in only one direction, and the driving force is cut off when a force is applied to the reverse rotation. The transmission 30 is accommodated in a cylindrical container 33, and a flange 34 is formed on the entire circumference of one side of the container 33. The transmission 30 has a transmission rod 36 in the hollow portion of the axle 35.
Is slidably inserted in a state of being biased outward,
The gear (not shown) in the transmission 30 is switched by moving the transmission rod 36 left and right. And
A pusher 37 for pressing the shift rod 36 is provided in pressure contact with the shift rod 36, and an operating tool (not shown) for operating the pusher 37 is provided near the handle 7 by a wire 38 connected thereto. It is. In short, the wire 38
Is pulled, the pusher 37 moves, and the shift speed is changed by moving the shift bar 36.

Reference numeral 39 denotes a cylindrical sleeve which is press-fitted into the container 33 of the transmission 30 and surrounds the outer periphery of the container 33. The sleeve 39 is screwed to the flange 34.

Reference numeral 40 denotes a rotating plate which rotates integrally with the sleeve 39 and the flange 34. The rotation plate 40 will be described based on the schematic diagram of the operation shown in FIG.

The rotating plate 40 is larger than the outer diameter of the container 33 of the transmission 30 and is concentric with the transmission 30. At two opposite positions, a pressing rod 41 and a conversion rod 42 are provided in the axial direction. Are integrally formed. The pressing rod 41 is formed in a column shape with a bell-shaped surface, and an elastic body, that is, a spring
It is designed to hold 43. And the rotating plate 40 is
The outer periphery of the transmission 30 is rotated while expanding and contracting a spring 43, and the transmission
It rotates concentrically with 30 using the outer periphery of the container 33 as a guide. The conversion rod 42 is a rectangular body extending in the direction of the axle 35, and is formed diagonally so that the tip portion becomes shorter in the rotation direction.

A spring 43 pressed by the pressing rod 41
The other end is in contact with a part of the rotating side casing 27, and the pressing rod is
41, the rotation side casing 28 is rotated by expanding and contracting the spring 43. At this time, the rotating plate 40 rotates while slightly distorting the rotating casing 28 in accordance with the expansion and contraction of the expanded and contracted spring 43. Then, the turning plate 40 turns around the transmission 30 in response to a distortion caused by human input. At this time, the conversion rod 42 also rotates by a slight rotation of the rotation plate 40 at the same time,
The inclined portion 43 formed at the tip of the conversion rod 42
Is pressed and moves toward the axle 35. An aluminum ring 45 is attached to the chevron 44, and the movement of the chevron 44 also moves the ring 45. A ring 45 is pivoted on the tip of this ring 45
A C-ring 46 and a spring 47 are provided for biasing toward the 40 side. Therefore, the ring 45 moves in the direction of the axle 35 by the amount by which the rotating casing 28 and the rotating plate 40 are distorted.

Numeral 48 denotes a coil provided in the fixed casing 27 near the ring 45. The coil 48 can convert a change in inductance due to the approach of the ring 45 into an electric signal. Can be used to detect human-powered torque. As described above, the members shown in FIG.

An inner gear 50 is screwed to the rotating casing 27 with a bolt.
Reference numeral 50 designates a tooth portion formed inside formed of a reinforced plastic, for example, a polyacetal resin. And
The outer peripheral portion is made of a metal casing and covers the outer periphery so as to strengthen the inner gear 50.

Reference numeral 51 denotes a shaft cylinder integrally formed with the inner gear 50. The shaft cylinder 51 is provided between the rotation plate 40 and the sleeve 39.
Bearings rotate smoothly when pivoted
52 are intervening.

Reference numeral 53 denotes a motor built in the fixed casing 27. A belt 55 is attached to an output shaft 54 of the motor 53, and the belt 55 is connected to a first pulley 56. The first pulley 56 is rotatably mounted on the fixed casing 27 via a bearing 57. Also,
A second pulley 59 is provided coaxially with the first pulley 56 via a one-way clutch 58 and a bearing 57, so that power from the first pulley 56 is transmitted in only one direction. A gear 60 is formed on the second pulley 59, and the gear 60 and the inner gear 50 mesh with each other to rotate the rotating casing 28 by the driving force of the motor 53. The one-way clutch 58 is provided to make the driving force from the motor 53 independent of the driving force of human power. For example, the one-way clutch 58 does not rotate the motor 53 together with the rear wheel 8 while pushing the bicycle. It is provided so that an unnecessary load is not applied to the user by dynamic braking.

Reference numeral 61 denotes an electromagnetic brake connected to the transmission 30. The electromagnetic brake 61 is connected to the container 33 of the transmission 30, and the rotation of the container 33 is stopped to apply braking to the rear wheel 8. It is supposed to be.

The structure of the electromagnetic brake 61 will be described.

Reference numeral 62 denotes a disc-shaped brake piece fixed to the container 33 of the transmission 30 and rotated together with the container 33. The brake piece 62 is provided in a brake case 63 fixed to the fixed casing 27. When the brake plate 64 is pressed, the brake piece 62, the container 33, that is, the rear wheel 8 can be fixed so as not to move. 2 shows a state where the brake plate 64 indicated by a solid line is being braked, and a state where the brake plate 64 indicated by a broken line has released the brake. Reference numeral 65 denotes a pressing spring for urging the brake plate 64 toward the brake piece 62. Further, reference numeral 66 denotes an electromagnet for attracting the brake plate 64 in a direction opposite to the biasing direction of the pressing spring 65 by passing a current, and the electromagnet 66 includes a coil 67 and a magnet 68.

Next, as shown in FIG. 3, a description will be given with reference to a plan view of the driving section.

Reference numeral 69 denotes a tension pulley for adjusting the tension of the belt 55. The tension pulley 69 has a roller 71 attached to one end of a support 70, and a tension pulley 69 attached to the fixed side casing 27 at the other end. A screw 72 is provided, the support body 70 can swing around the part where the screw 72 is attached, the tension pulley 69 is fixed by tightening the other screw 73, and the belt 55 is pressed,
The tension of the belt 55 can be adjusted.

Reference numeral 74 denotes a control board incorporated in the fixed casing 27. The control board 74 is incorporated in a portion having no pulley. Then, the control board 74 controls the rotation of the motor 53 according to the output result from the torque detector 49,
That is, in addition to the microcomputer, a drive circuit for PWM controlling the motor 53, a constant voltage circuit for inputting a starting voltage to the microcomputer,
Equipped with a torque detection circuit, etc. Further, a power switch that is intermittently interlocked with the key switch 19 is interposed in an energization circuit for the motor 53, and energization of the motor 53 is intermittently performed by the movement of the key 20.

Next, a power system diagram having the above configuration will be described with reference to FIG.

First, a manual driving system will be described. The manual power given by the pedal 5 is transmitted to the rear sprocket 32 by the chain 10 and rotates the rear wheel 8 via the transmission 30, the rotating plate 40 and the spring 43. Let it. Next, the electric drive system will be described.
Is converted by the conversion member 44 into movement in the direction of the axle 35 so that the ring 45 moves with the movement. The movement of the ring 45 is converted into a change in the inductance of the coil 48, and is input to the control board 74 as an electric signal. The control board 74 is contained in the fixed casing 27. Then, a signal of the coil 48 is input to the control board 74, and a drive signal is output so as to rotate the motor 53 based on the signal. The output of the motor 53 is the first pulley
56, reduced by the second pulley 59, the inner gear 50
, The rear wheel 8 rotates. In this control, the ratio between the manual driving force and the electric driving force is one to one, and the motor 53 assists. The electromagnetic brake 61 includes a brake piece 62 connected to the transmission 30 and rotating together with the transmission 30, a brake plate 64 for pressing the brake piece 62, and a brake piece
An electromagnet 66 is provided to isolate the magnet 62 from the magnet.

Next, the control circuit will be described with reference to FIG.

Numeral 75 denotes a control circuit for performing PWM control of the motor 53 by a drive switching element 76.
Reference numeral 75 drives the motor 53 with an output corresponding to the torque detected by the torque detector 49.

Reference numeral 77 denotes a motor drive circuit for turning on and off the switching element 76 based on an output signal from the control circuit 75.

Reference numeral 78 denotes a constant voltage circuit which reduces the voltage of 24 volts to 5 volts and serves as a power supply for the control circuit 75.

Reference numeral 79 denotes a flywheel diode connected in parallel to the motor 53.

Reference numeral 19 denotes a key switch interposed in a circuit connecting the motor 53 and the battery 11, and the key switch 19
Is a key switch 19 provided on the battery mounting table 15.
Is turned ON / OFF by turning the key 20.

Reference numeral 25 denotes the push switch. The push switch 25 is connected in series with the key switch 19 and is connected between the battery 11 and the electromagnetic brake 61.

Next, the operation of the control circuit will be described.

When the battery 11 is connected to the circuit, the coil
When the key switch 19 and the push switch 25 are ON at this time, the brake plate 64 is pulled toward the coil 66 by the action of the electromagnet 66 against the force of the pressing spring 65, and the brake is released. The brake plate 64 is separated from the piece 62, and the rear wheel 8 becomes rotatable. However, key switch 19,
Or, when the push switch 25 is OFF, the coil 67
To maintain the state where the brake plate 64 is pressed by the brake piece 62 by the force of the pressing spring 65 provided on the electromagnetic brake 61, that is, to maintain the state where the wheels 8 are braked. Become.

That is, if the vehicle is not in the running state, the electromagnetic brake
61 is not released and the rear wheel 8 remains locked.

Next, when the battery 11 is not connected, for example, when the battery 11 is carried away from the main body 1, or when the battery 11 is removed from the main body 1 and charged, the key switch 19 and the Push switch 25 ON-
Regardless of the OFF state, since no current flows through the coil 67 of the electromagnetic brake 61, the brake plate 64 is pressed by the brake piece 62, and the electromagnetic brake 61 is not released, and the battery is not released.
Unless 11 is installed, the rear wheel 8 cannot be moved.

Next, the operation of the electromagnetic brake 61 will be described in relation to the use of the electric bicycle.

First, the case where the push switch 25 provided on the battery mounting table 15 is in the ON state will be described.

When the user separates from the main body 1, the key switch 19 is turned off by operating the key 20, and the user separates. At this time, since the energization between the battery 11 and the electromagnetic brake 61 is cut off by the key switch 19, the electromagnetic brake 61 is stopped in an operating state, that is, in a state in which braking is applied.
When the battery switch 11 and the electromagnetic brake 61 are energized by the key switch 19 to start running, the brake plate 64 is separated from the brake piece 62 by the operation of the electromagnet 66, and the braking is released. This allows not only traveling by electric driving force but also traveling by human driving force.

Next, the state where the push switch 25 is turned off will be described.

In this state, when the user leaves the main body 1 with the battery 11 locked by the lock mechanism 17, the push switch 25 below the battery 11 is turned off. Even if the key switch 25 is broken and turned on, the electromagnetic brake 61 is not released unless the battery 11 is removed and the push switch 25 is turned on.

In this embodiment, the key switch 19 for turning on and off the power supply is provided.
When the is connected, the electromagnetic brake 61 may be released to operate only with the manual driving force.

In the present embodiment, the battery 11 for the electric drive unit is used as a power source for releasing the electromagnetic brake 61. However, another battery may be provided exclusively for release.

Furthermore, in this embodiment, the electromagnetic brake 61 is provided on the rear wheel 8, but the electromagnetic brake 61 may also be provided on the front wheel 6 so that both the wheels can be locked.

[0066]

According to the present invention, at least one wheel is provided with an electromagnetic brake for releasing the braking operation when the power is supplied, and the battery is detached because the battery can be supplied to the main body so that the power can be supplied to the electromagnetic brake. At times, the wheels are always braked, so that the vehicle cannot be moved by manual driving force. That is, the vehicle cannot be carried when the user leaves the vehicle with the battery removed, so that the vehicle is less likely to be stolen.

Further, since the switch means is provided on the current path between the battery and the electromagnetic brake, even when the battery is attached and the bicycle is away from the bicycle, the electromagnetic brake cannot be released unless the switch means is closed. , Not easily stolen.

Further, since the switch means also has a power switch for interrupting the power supply to the motor, the theft can be prevented with a simple configuration.

The switch means also has a lock mechanism for fixedly mounting the battery on the main body, and is provided with a key for operating this lock mechanism. Without the key, the auxiliary power does not work, making it difficult for theft.

Further, since the lock mechanism for fixing the battery to the main body is provided, and the switch means is provided on the mounting surface on which the battery is mounted, the electromagnetic brake cannot be released unless the battery is removed. Therefore, when the user moves away from the vehicle body with the battery mounted, the switch means cannot be operated, and the vehicle is less likely to be stolen.

Further, since the lock mechanism has a key for releasing the fixed attachment of the battery to the main body, the battery cannot be removed without the key, that is, the electromagnetic brake cannot be released.

[Brief description of the drawings]

FIG. 1 is a control circuit diagram showing an embodiment of the present invention.

FIG. 2 is a side sectional view of the driving unit.

FIG. 3 is a plan configuration diagram of the driving unit.

FIG. 4 is a schematic diagram of an operation of the torque detector.

FIG. 5 is the same power system diagram.

FIG. 6 is an overall side view of the same.

FIG. 7 is a diagram showing a mounted state of the battery.

[Explanation of symbols]

 5 Pedal 10 Chain 32 Rear sprocket 1 Main body 11 Battery 53 Motor 74 Control board 8 Rear wheel (drive wheel) 61 Electromagnetic brake 19 Push switch (switch means) 25 Key switch (switch means) 17 Lock mechanism 20 key

Continued on the front page (72) Inventor Hiroaki Sagara 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Toshihiro Matsumoto 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Inventor Hoshi Tomo 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Kazuhisa Matsumoto 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A human-powered driving unit using human power as a driving source, an electric driving unit using a motor driven by a battery detachably mounted on a main body as a power source, and a rotation driven by the human-powered driving unit and the electric driving unit. Wheels including driving wheels to be provided,
A vehicle with auxiliary power, wherein an electromagnetic brake that releases a braking operation when energized is provided on at least one wheel, and the electromagnetic brake is energized by mounting the battery on a main body. 2. The vehicle with auxiliary power according to claim 1, wherein a switch means for interrupting the current path is provided in the current path between the battery and the electromagnetic brake. 3. The vehicle with auxiliary power according to claim 2, wherein said switch means also has a power switch for cutting off the power supply to the motor. 4. The auxiliary device according to claim 3, wherein the switch means also has a lock mechanism for fixing the battery to the main body, and a key for operating the lock mechanism. Powered vehicle. 5. The battery according to claim 2, further comprising a lock mechanism for fixing the battery to the main body, wherein the switch is provided on a mounting surface on which the battery is mounted.
A vehicle with auxiliary power as described. 6. The vehicle with auxiliary power according to claim 5, wherein the lock mechanism includes a key for releasing a fixed attachment of the battery to the main body.