JP3125019B2 - Vehicle auxiliary drive and bicycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field related to a vehicle auxiliary drive device that applies an auxiliary drive force to a vehicle driven and driven by human power, and a bicycle equipped with the vehicle auxiliary drive device. Belong.

[0002]

2. Description of the Related Art Conventionally, as a vehicle driven and driven by human power and equipped with a vehicle auxiliary drive device,
For example, there has been known a bicycle in which a vehicle auxiliary drive device including an electric motor and a coupling mechanism such as gear engagement is connected to an axle of a rear wheel.

In this conventional bicycle, a battery mounted on a carrier or a frame (a main pipe or the like) is connected to an electric motor of an auxiliary driving device for a vehicle, and an auxiliary driving force is applied to an axle of a rear wheel by rotation of the electric motor. Is to be granted. The auxiliary driving force is efficiently applied by connecting various sensors, switches and a controller to finely control the rotation of the electric motor.

[0004]

SUMMARY OF THE INVENTION In the above-mentioned conventional bicycle, the coupling mechanism of the auxiliary drive device for the vehicle is complicated, so that the product price is high, and the retrofitting and mounting of the auxiliary drive device for the vehicle is required. There is a problem that it is impossible. Furthermore, water, mud,
If foreign matter such as pebbles invades, it is likely to become inoperable.
There is a problem that the vehicle can travel only on a road surface free of foreign matter.

The present invention has been made in view of such problems, and has a low product price, can be easily mounted on a vehicle driven and driven by human power at any time, and can be used in any environment. A first object is to provide an auxiliary drive device for a vehicle that can be mounted on a vehicle that is driven and driven by human power on a road surface. Further, a second object of the present invention is to provide a bicycle having a mounting form for making the above-described vehicle auxiliary drive device function effectively.

[0006]

Means for Solving the Problems In order to solve the first problem described above, the vehicle auxiliary drive device according to the present invention employs the following means.

That is, the auxiliary driving force is applied by intermittently directly or indirectly abutting the electric motor and the wheels of the vehicle which is driven to rotate by the electric motor and driven by human power. And a rotating roller.

[0008] In this means, the auxiliary driving force is applied by direct or indirect contact of the rotating roller to the wheel to eliminate the need for a complicated connecting mechanism, so that the product price is reduced and the mounting is easy at any time. Will be able to In addition, since the direct or indirect contact of the rotating roller with the wheel is intermittent and foreign substances adhered to the wheel can be avoided or removed, the vehicle can be mounted on a vehicle driven on a road surface in any environment by human power. Will be able to do it.

Further, as described in claim 2, claim 1
In the vehicle auxiliary drive device according to the above, the rotating roller is in contact with a tread portion of the wheel.

In this means, a tread portion is selected as a contact point of the rotating roller to the wheel.

[0011] Further, as described in claim 3, claim 1
In the vehicle auxiliary drive device of the above, the rotating roller is in contact with a rim portion of the wheel.

According to this means, the rim is selected as the contact point of the rotating roller with the wheel.

[0013] Also, as described in claim 4, claim 1 is as follows.
In the vehicle auxiliary drive device according to the above, the rotating roller is in contact with an auxiliary disk fixed coaxially to the wheel.

In this means, the rotating roller contacts the wheel via the auxiliary disk.

[0015] Further, as described in claim 5, claim 1 is as follows.
In any one of the auxiliary driving devices for vehicles according to any one of (1) to (4), the rotating roller is circularly fixed eccentrically to a rotating shaft connected to the electric motor.

In this means, the eccentricity is selected as the supporting structure of the rotating roller which can obtain the intermittent contact with the wheel.

Further, as described in claim 6, claim 1 is
In any one of the auxiliary driving devices for vehicles according to any one of (1) to (4), the rotation roller is non-circular and has a center fixed to a rotation shaft connected to the electric motor.

In this means, a non-circular shape is selected as the shape of the rotating roller capable of obtaining intermittent contact with the wheel.

In order to solve the above second problem, the bicycle according to the present invention employs the following means.

That is, as described in claim 7, claim 1
The vehicle auxiliary drive device according to any one of the above (1) to (6) is mounted on an upper side of a front wheel or an auxiliary disk fixed to the front wheel.

In this means, the vehicle auxiliary drive device is mounted on the front wheel and the auxiliary disk, which have less loss of applying the auxiliary drive force than the rear wheel. Further, in the front wheels and the auxiliary disk, an auxiliary drive device for a vehicle is mounted on an upper side where foreign matter is less likely to adhere than on a lower side.

According to the present invention, the vehicle auxiliary drive device is supported by one or both of a mudguard and a mudguard stay of a front wheel by a mounting bracket.

In this means, the vehicular auxiliary drive device is supported by the mudguard and the mudguard stay that operate integrally with the front wheels.

Further, as described in claim 9, claim 7
In the bicycle described above, the vehicle auxiliary drive device is supported by a fork pipe of a front wheel by a mounting bracket.

According to this means, the vehicle auxiliary drive device is supported by a fork pipe that performs a steering operation integrally with the front wheels.

[0026]

Hereinafter, embodiments of a vehicle auxiliary drive device and a bicycle according to the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show an embodiment (1) of a vehicle auxiliary drive device according to the present invention.

This embodiment comprises an electric motor 1, a rotating shaft 2, and a rotating roller 3.

The electric motor 1 is a small, lightweight, thin DC motor. The DC motor 1 is equipped with a centrifugal clutch or the like that is small and lightweight and has the function of a speed reducer, depending on the rotation ability and the like.

The rotary shaft 2 is connected directly or indirectly by the electric motor 1 and is driven to rotate.

The rotary roller 3 is formed in an elliptical shape and has a center fixed to the rotary shaft 2. The rotating roller 3 is formed of a rubber-based material having a large contact friction, and has a tread portion 41 of a wheel 4 of a vehicle driven and driven on a peripheral surface 31 by human power.
Is provided with a groove 32 which abuts the groove.

According to this embodiment, the rotating roller 3 is brought into contact with and connected to the tread portion 41 of the wheel 4 of the vehicle driven and driven by human power without requiring a complicated connecting mechanism. Therefore, the product is inexpensive and can be easily mounted on a vehicle at any time.

According to this embodiment, the rotating roller 3 abuts the tread portion 41 of the wheel 4 to apply an auxiliary driving force to the vehicle. Therefore, as in the conventional example described above, the wheels 4
As compared with the case where the auxiliary driving force is applied to the axle, the drive transmission is performed more efficiently.

Further, according to this embodiment, the application of the auxiliary driving force to the vehicle is intermittent due to the shape of the rotating roller 3 and the like. That is, the peripheral surface 31 and the groove 32 of the rotating roller 3 and the wheel 4
A space S is intermittently formed between the tread portion 41 and the tread portion 41. The space S serves as a passage gap for foreign matter adhering to the tread portion 41 of the wheel 4 to prevent the rotating roller 3, the rotating shaft 2, and the electric motor 1 from being damaged by the pressing of the rotating roller 3 by the foreign matter. To contribute. In addition, the space S causes the rotating roller 3 to collide with foreign matter adhering to the tread portion 41 of the wheel 4 in the form of scraping, thereby contributing to the removal of foreign matter from the tread portion 41 of the wheel 4. Therefore, it can be mounted on a vehicle that is driven by human power on a road surface in an environment where foreign substances such as water, mud, and pebbles are likely to adhere.

It should be noted that the intermittent application of the auxiliary driving force of the rotating roller 3 to the vehicle can reduce the load applied to the electric motor 1 from the wheels 4 when the vehicle starts running. . Therefore, it is not necessary to provide a rising current control circuit or the like in the control system, and the control system is simplified. Further, when the auxiliary driving force is not applied from the rotating roller 3 to the vehicle, the above-described state in which the space S is formed is naturally exhibited. No unnecessary load is applied to the drive.

FIGS. 3 and 4 show an embodiment (2) of a vehicle auxiliary drive device according to the present invention.

In this embodiment, the rotary roller 3 of the above-described embodiment (1) is arranged so as to be in contact with the rim portion 42 of the wheel 4 of the vehicle driven and driven by human power. ing. Therefore, the peripheral surface 31 of the rotating roller 3
Are formed flush with each other and the groove 32 is removed. In addition,
As shown in FIG. 4, the rotating roller 3
The paired elliptical long axes and short axes are configured to rotate synchronously.

According to this embodiment, substantially the same operation and effect as those of the above-described embodiment (1) can be obtained. Further, when the rotating roller 3 applies the auxiliary driving force to the vehicle, the two rotating rollers 3 sandwich the wheel 4 from both sides, so that the slip between the two rotating roller 3 and the wheel 4 is prevented. As a result, the transmission of the auxiliary driving force is ensured.

FIG. 5 shows an embodiment (3) of a vehicle auxiliary drive device according to the present invention.

In this embodiment, the rotary roller 3 is configured to be circular and fixed eccentrically to the rotary shaft 2.

According to this embodiment, substantially the same operations and effects as those of the above-described embodiments (1) and (2) can be obtained.

FIG. 6 shows an embodiment (4) of a vehicle auxiliary drive device according to the present invention.

In this embodiment, the rotary roller 3 is octagonal and the rotary shaft 2 is fixed at the center.

According to this embodiment, substantially the same operations and effects as those of the above-described embodiments (1) and (2) can be obtained.

As described above, in addition to the illustrated embodiment of the vehicle auxiliary drive device according to the present invention, the rotating roller 3 can be indirectly brought into contact with the wheel 4 (see FIGS. 9 and 10 described later). Embodiment (3) of the bicycle according to the present invention).

FIG. 7 shows an embodiment (1) of a bicycle according to the present invention.

In this embodiment, the vehicle auxiliary drive device (1) according to the present invention is mounted on the upper portion of the front wheel 10. The battery 20 is mounted on the main pipe 30.

The electric motor 1 of the first embodiment of the vehicular auxiliary drive device according to the present invention has a mounting bracket 4
The front wheel 10 is supported by a mudguard 50 and a mudguard stay 60 of the front wheel 10 which are integrally operated with the front wheel 10 by a steering wheel.

According to this embodiment, the above-described embodiment (1) of the vehicular auxiliary drive device according to the present invention is different from the front wheel 1
Since it is mounted on the upper side of the motor 0, direct contamination and damage by foreign matter such as the electric motor 1 can be prevented. In addition, since the auxiliary driving force is applied to the front wheel 10 which is a resistor to the rear wheel 70 during steering, the auxiliary driving force is effectively applied.

FIG. 8 shows an embodiment (2) of the bicycle according to the present invention.

In this embodiment, the vehicle auxiliary drive device (2) according to the present invention is mounted on the upper side of the front wheel 10.

According to this embodiment, substantially the same operation and effect as those of the above-described embodiment (1) can be obtained.

FIGS. 9 and 10 show an embodiment (3) of a bicycle according to the present invention.

In this embodiment, the auxiliary roller 90 is coaxially fixed to the front wheel 10 so that the rotating roller 3 comes into contact with the auxiliary disk 90 to apply an auxiliary driving force. In addition, the electric motor 1 is supported by a fork pipe 80 that performs a steering operation integrally with the front wheel 10 by a mounting bracket 40.

The auxiliary disk 90 is connected to the fixed portion 901 fixed to the axle inside the spoke 100 of the front wheel 10 coaxially with the axle, and connected to the fixed portion 901 by bolts 902 or the like, and is provided outside the spoke 100. And a ring plate-shaped contact portion 903 arranged. Note that any type of the above-described embodiment of the vehicular auxiliary drive device according to the present invention can be mounted on the contact portion 903.

According to this embodiment, in addition to the functions and effects substantially similar to those of the above-described embodiments (1) and (2), in addition to the front wheels 10, mud or the like is more likely to be applied to the auxiliary disk 90 than to the front wheels 10. Since the possibility of adhesion is low and the contact surface with the rotating roller 3 is not deformed by the air pressure or the running surface like the front wheel 10, the auxiliary driving force is reliably transmitted.

As described above, in addition to the illustrated embodiment, the vehicle auxiliary drive device according to the present invention can be mounted on a vehicle used for civil engineering work, agricultural work, cargo handling work, or the like.

[0055]

As described above, the auxiliary driving device for a vehicle according to the present invention does not require a complicated connecting mechanism to apply the auxiliary driving force, so that the product price is low and
There is an effect that a vehicle driven and driven by human power can be easily installed at any time.

Further, since the rotating roller comes into contact with the vicinity of the outer peripheral portion of the wheel to apply an auxiliary driving force to the vehicle, there is an effect that the auxiliary driving force is efficiently transmitted.

Further, since the rotating roller intermittently abuts the wheel and applies an auxiliary driving force to the vehicle to avoid and remove foreign matter adhering to the wheel, water, mud, pebbles and the like can be prevented. There is an effect that it can be mounted on a vehicle driven and driven by human power on a road surface in an environment where foreign matter easily adheres.

Also, since the application of the auxiliary driving force to the vehicle by the rotating roller is intermittent, the load applied to the electric motor from the wheels at the time of starting the vehicle can be reduced. There is an effect that the control system is simplified without providing a circuit or the like.

Further, since the rotating roller intermittently contacts the wheel, the state in which the rotating roller is separated from the wheel naturally appears when no auxiliary driving force is applied to the vehicle from the rotating roller. Even if an intermittent clutch or the like is not provided, there is an effect that unnecessary load is not applied to the manual driving.

Further, in the bicycle according to the present invention, since the auxiliary drive device for the vehicle is mounted on the upper side of the front wheel, there is an effect of preventing direct contamination and damage of the electric motor and the like due to foreign matter.

In addition, since the auxiliary driving force is applied to the front wheels which act as resistors against the rear wheels at the time of steering, there is an effect that the auxiliary driving force is effectively applied.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment (1) of a vehicle auxiliary drive device according to the present invention.

FIG. 2 is an enlarged sectional view taken along line XX of FIG.

FIG. 3 is a side view showing an embodiment (2) of a vehicle auxiliary drive device according to the present invention.

FIG. 4 is an enlarged cross-sectional view of FIG.

FIG. 5 is a cross-sectional view of a main part of a vehicle auxiliary drive device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view of a main part showing an embodiment (4) of a vehicle auxiliary drive device according to the present invention.

FIG. 7 is a side view showing the embodiment (1) of the bicycle according to the present invention.

FIG. 8 is a side view showing the embodiment (2) of the bicycle according to the present invention.

FIG. 9 is a side view showing the embodiment (3) of the bicycle according to the present invention.

FIG. 10 is an enlarged sectional view of a main part of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motor 2 Rotating shaft 3 Rotating roller 10 Front wheel 40 Mounting bracket 50 Mudguard 60 Mudguard stay 80 Fork pipe 90 Auxiliary disk

Claims (9)

(57) [Claims] 1. A rotating roller connected to an electric motor for applying auxiliary driving force by contacting a wheel of a vehicle driven and driven by human power, such that the rotating roller intermittently directly or indirectly contacts the wheel. An auxiliary drive device for a vehicle, characterized in that: 2. The vehicle auxiliary drive device according to claim 1, wherein the rotating roller is in contact with a tread portion of a wheel. 3. The vehicle auxiliary drive device according to claim 1, wherein the rotating roller is in contact with a rim portion of the wheel. 4. The auxiliary driving device for a vehicle according to claim 1, wherein the rotating roller is fixed coaxially to wheels and abuts on an auxiliary disk. 5. An auxiliary driving device for a vehicle according to claim 1, wherein said rotating roller is circularly fixed eccentrically to a rotating shaft connected to said electric motor. apparatus. 6. The vehicle auxiliary driving device according to claim 1, wherein the rotation roller is non-circular and has a center fixed to a rotation shaft connected to the electric motor. Drive. 7. A bicycle comprising the vehicle auxiliary drive device according to claim 1 mounted on an upper side of a front wheel or an auxiliary disk fixed to the front wheel. 8. The bicycle according to claim 7, wherein the vehicle auxiliary drive device is supported by one or both of a mudguard and a mudguard stay of a front wheel or a fork pipe by a mounting bracket. 9. A method of applying an auxiliary driving force by intermittently contacting a rotating roller driven by an electric motor with wheels of a vehicle driven and driven by human power.