JPH07154941A - Flat rim motor driving mechanism for bicycle and bicycle equipped with said driving mechanism - Google Patents

Abstract

PURPOSE:To provide a flat rim motor driving mechanism, for a bicycle, which is lightweight, whose required installation space is small, which can be equipped easily without changing a pedal-driving and speed-changing mechanism of the bicycle and whose power consumption amount is small. CONSTITUTION:A housing for a flat rim motor 011 provided with a rotor composed of a multilayer Mylar-film rotating coil is fixed and bonded to spokes 054 of a wheel 055 of a bicycle. A battery case 056 is fixed and bonded to a frame. A swievel-type governor handle 059 is fixed and bonded to a handle. Thereby, in a flat rim motor driving mechanism for the bicycle, the motor 001, the case 056 and the governor handle 059 are connected electrically and work from the motor 011 to the spokes 054 is transferred by an epicycle gear inside the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat rim type motor drive mechanism for a bicycle and a bicycle equipped with the drive mechanism. The flat rim type motor drive mechanism for a bicycle according to the present invention can electrify all types of bicycles currently in practical use.

[0002]

2. Description of the Related Art As is well known, there are various kinds of motor drive mechanisms for electrifying a bicycle. When roughly classified, there are rollers driven by an electric motor and tire surfaces of bicycle wheels. Of the type in which the wheels are rotated by contacting with each other (see, for example, Japanese Patent Laid-Open No. 50-14043), and the type of rotating the wheels of a bicycle by a shaft driven by an electric motor (shaft drive system) ( For example, Japanese Patent Laid-Open No. 4-358986
(See Japanese Laid-Open Patent Publication No. 1989) and a housing that is rotated by an electric motor and is fixed to the center of a bicycle wheel to rotate the wheel (for example, Japanese Patent Laid-Open No. 50-5273).
(See Japanese Patent Publication No. 7)).

[0003]

The conventional motor drive mechanism for electrifying a bicycle is heavy in weight and requires a large installation space in any of the above-mentioned types, which makes installation work difficult. Therefore, there is a problem that a large amount of power is consumed. In fact, due to these problems, bicycle motor drive mechanisms have not become popular.

In view of the above problems, the present invention is a motor drive for a bicycle, which is light in weight, requires a small installation space, can be easily installed without changing the original pedal drive / transmission mechanism of the bicycle, and consumes less power. It is a technical subject to provide a mechanism.

It is also a technical object of the present invention to provide a motor drive mechanism for a bicycle that generates a high torsional force capable of rotating any of the wheels of the bicycle at about 3600 rpm. It is a thing.

[0006]

The above technical problems can be solved by the present invention as follows. That is, the present invention provides a flat rim type housing fixed to a spoke of a bicycle wheel, a hollow central shaft fixed to a central hub of the bicycle wheel, and a DC power source fixed to a frame portion of the bicycle. A motor having a rotor composed of a multilayer mylar film rotary coil fixed to the inside of the housing;
An epicyclic gear fixed to the inside of the housing and driven by the motor to rotate the housing, and a DC inserted through the hollow central shaft to connect the motor and the DC power source. A flat rim type motor drive mechanism for a bicycle, comprising a power input cable and rotating a wheel of the bicycle to which the housing is fixed by rotation of the housing.

The present invention also provides a flat rim type housing fixed to spokes of a bicycle wheel, a hollow central shaft fixed to a central hub of the bicycle wheel, and a DC fixed to a frame portion of the bicycle. A power supply, a motor having a rotor composed of a multilayer mylar film rotary coil fixed to the inside of the housing, and an epicyclic that is fixed to the inside of the housing and is driven by the motor to rotate the housing. A gear, a DC power input cable inserted through the hollow central shaft and connecting between the motor and the DC power source, and a voltage from the DC power source fixed to the handle portion of the bicycle to the motor. And a swivel-type governor handle for controlling the current, and a flat rim type motor for a bicycle. A bicycle equipped with a drive mechanism.

[0008]

[Function] Fig. 1 shows the appearance of a commercially available bicycle (see Fig. 1-a).
And an appearance in which the flat rim type motor for a bicycle of the present invention is fixed to the commercially available bicycle (see Fig. 1-b). As shown in FIG. 1, according to the present invention, a small installation space is required, and the drive / transmission mechanism of the bicycle itself does not have to be changed.

In the present invention, a flat rim type
e) The motor is adapted to the shape and dimensions of the bicycle wheel,
In addition, in order to reduce the weight, as shown in FIGS.
It has a flat rim shape that is as thin as possible, and uses a rotor consisting of a multilayer mylar film rotary coil.
Furthermore, epicyclic gears are used for power transmission. The operating principles of the motor and the gear are both known.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and operation of the present invention will be described in detail below with reference to preferred embodiments of a flat rim type motor drive mechanism for a bicycle and a bicycle equipped with the drive mechanism according to the present invention.

FIG. 2 shows an external appearance of a commercially available bicycle equipped with the flat rim type motor drive mechanism for a bicycle according to the present invention.
As shown in Figure 2, the spokes 054 on the front wheel 055 of the bicycle
The flat rim type motor 001 is fixed to the bicycle, and the battery case (DC power source) 056 is fixed to the frame part of the bicycle. The flat rim type motor 001 and the battery case 056 are fixed.
Is electrically connected by a conductor (cable) 010 from a speed control outlet 058 provided in the battery case 056, and the conductor 010 is a swivel governor handle 059 fixed to the handle portion of the bicycle. The speed of the governor handle 059 is controlled to control the rotation speed of the flat rim type motor 001, that is, the moving speed of the bicycle. The battery case 056
Is equipped with a charging socket 057. in this case,
Since the original drive / shift mechanism of the bicycle has not been changed,
The bicycle can be driven alternately by the power of the motor or the pedals.

3 to 13 show details of the flat rim type motor and the epicyclic gear in the present invention. Figure 3-
In 13, reference numeral 001 is a flat rim type motor, 002 is a central shaft, 003 is a rotor bearing block, 004 is a rotor of a multilayer mylar film rotor coil, 005 is a lock ring for locking the rotor (004), and 006 is a bearing. , 007 is a DC negative carbon brush, 007A is a DC positive carbon brush, 008 is a carbon brush ground terminal, 009 is a carbon brush positive terminal, 010 is a positive power supply conductor, 011 is a carbon brush element, and 012 is an A side stator housing (014 Flat circular permanent magnet in 0), 013
Is an A-side permanent magnet mounting ring, 014 is an A-side stator housing, 015 is an epicyclic gear mounting surface, 016 is a stator housing coupling surface, and 017 is a B-side stator housing (050)
A flat circular permanent magnet inside, 018 is a B side permanent magnet mounting ring, 019 is a B side stator housing tightening latch, 020
Is the epicyclic gear planet wheel, 021 is the planet axle,
022 is a planetary wheel bearing, 023 is a planetary wheel substrate of an epicyclic gear, 024 is a swivel pulley, 025 is an inner clutch wheel set, 026 is an inner clutch wheel set (027) coupled to an A side rotor housing (033). Latch, 027 outer clutch ring set, 028 bearing, 029 epicyclic gear sun ring, 030 sun ring (029) rotor bearing block
Latch for (003), 031 for spoke hole, 032 for A
Bearing for side rotor housing (033), 033 is A side rotor housing, 034 is an annular ring of epicyclic gear (see FIG. 8), 035 is B side rotor housing, and 036 is B side rotor housing. (035) bearing, 037 A-side stator housing (014) bearing, 038 A-side and B-side rotor housing (033,035) coupling flanges (see FIG. 5), 0
39 is the screw hole of the A side and B side rotor housings (033,035) (see FIG. 4), 040 is the central hub (see FIG. 5), 0
41 is the lock ring of the A side rotor housing (033) (Fig. 6
, 042 is the ring gear of the epicyclic gear (03
4) Latch for connecting the A side stator housing (014) (see FIGS. 6 and 8), 043 is the rotor bearing block (00
A notch for inserting a latch when connecting 3) to the sun wheel of the epicyclic gear (039) (see FIGS. 6 and 11), 044 is a copper-carbon alloy of a carbon brush (see FIG. 12), 045 is an inner conductor of the carbon brush, 046 is a spring of the carbon brush, 047 is a conductive plate of the carbon brush, 048.
Is a carbon brush installation cap, 049 is a carbon brush lock nut, 050 is a B-side stator housing, 051 is a printing coil on the A side of the multilayer mylar film (see FIG. 10), and 052 is on the B side of the multilayer mylar film. A dotted line showing the print coil (see FIG. 10), 053 is a spot welding portion of the print coil on the A side and B side of the multilayer mylar film,
Reference numeral 060 denotes a clutch spring claw (see FIG. 13), and 061 denotes a hole (see FIG. 13) for receiving the clutch spring claw (060).

Now, the DC current from the battery case 056 (see FIG. 2) is transferred to the positive hub of the B side stator housing 050 by the wire 010 inserted through the hollow central shaft 002 fixed to the central hub of the front wheel of the bicycle. Brush 00
It is transmitted to the positive terminal 009 of the 7A, then to the carbon brush element 011 of the positive carbon brush 007A, and then to the rotor 004 of the multilayer mylar film rotor coil (see FIGS. 3-6 and 10). The DC current from the rotor 004 is sent to the battery case through the negative carbon brush 007 on the A side to generate magnetic field lines, and the permanent magnets 012 and 017 on the A side and the B side are generated.
And the torque is generated, and the rotor 004 and the rotor bearing block 003 rotate (see FIGS. 3, 9, 10 and 11).

When the rotor bearing block 003 rotates, the sun wheel 029 of the epicyclic gear rotates, and when the swivel pulley 024 rotates by its axle 21 (planetary wheel shaft), it drives the three planet wheels 020. Inner clutch wheel set 025
To rotate further. Inner clutch wheel set 0
The action of 25 causes the outer clutch wheel set 027 to rotate together. Since the outer clutch wheel set 027 is connected to the A side rotor housing 033 by the latch 026 means,
When the outer clutch wheel set 027 rotates, the A-side rotor housing 033 rotates (see FIGS. 3, 7, 8 and 13).

Since the A-side rotor housing 033 and the B-side rotor housing 035 are coupled by the coupling flange 038 by the screw holes 039 (see FIGS. 4 and 5), when the A-side rotor housing 033 rotates. B side rotor housing
035 also rotates with it, driving spoke 054 and wheel 0
Rotate 55 (see FIG. 2) (see FIG. 3).

A commercially available 12V7AH DC power source
When using 3 pieces (weight: about 7.5 kg), 25 to 30
It can run about 30km depending on the speed of Km / hour.

In the above embodiment, the flat rim type motor
The 001 is provided on the front wheel of the bicycle, but it can be provided on the rear wheel, and can also be provided on the front and rear wheels respectively.

[0018]

According to the present invention, the flat rim type motor has a flat rim type which is as thin as possible in conformity with the shape and size of the bicycle wheel, and the rotor uses a multi-layer mylar film rotary coil. As light as possible (about 2 kg)
As a result, the installation space required for installing a bicycle is small and power consumption is low. Incidentally, in the present invention, since the epicyclic gear with the clutch wheel set is provided inside the housing of the flat rim type motor, the installation space required is also smaller from this point. In addition, the target bicycle can be equipped without changing the original drive / shift mechanism. In addition, the target bicycle can be equipped without causing a great change in appearance.

Further, in the present invention, since the shape of the motor is a flat rim shape adapted to the shape and size of the bicycle wheel, the torque radius of the rotor 004 is extended and the magnetic contact surface is increased. A high torsional force capable of rotating any wheel of a bicycle at about 3600 rpm can be rapidly generated with low power consumption.

[Brief description of drawings]

FIG. 1 is a side view showing the appearance of a commercially available bicycle and the appearance of a flat rim type motor according to the present invention fixed to the commercially available bicycle.

FIG. 2 is a side view showing the appearance of a commercially available bicycle equipped with the flat rim type motor drive mechanism for a bicycle according to the present invention.

FIG. 3 is an explanatory longitudinal sectional view showing the structure of a flat rim type motor according to the present invention.

FIG. 4 is a partially omitted perspective view showing an appearance of the flat rim type motor according to the present invention as viewed from a B-side rotor housing direction.

FIG. 5 is a partially cutaway perspective view showing an external appearance and an internal structure of the flat rim type motor according to the present invention when viewed from the A-side rotor housing direction.

FIG. 6 is an exploded perspective view of a flat rim type motor according to the present invention.

FIG. 7 is a perspective view showing an epicyclic gear and an A-side permanent magnet mounting ring according to the present invention.

FIG. 8 is a perspective view showing an epicyclic gear according to the present invention.

FIG. 9 is a perspective explanatory view showing an installation mode of permanent magnets on a permanent magnet mounting ring according to the present invention.

FIG. 10 is an explanatory plan view showing a configuration of a multilayer mylar rotor coil, a carbon brush, and a permanent magnet according to the present invention.

FIG. 11 is an exploded perspective view of a bearing block according to the present invention.

FIG. 12 is an exploded perspective view of a carbon brush assembly according to the present invention.

FIG. 13 is a plan view showing a power transmission clutch mechanism according to the present invention.

[Explanation of symbols]

001 Flat rim type motor 002 Center axis 003
Rotor Bearing Block 004 Multilayer Mylar Film Rotor Coil Rotor
005 Lock ring 00 to lock the rotor (004)
6 Bearing 007 DC negative carbon brush 007A DC positive carbon brush 008 Carbon brush ground terminal 009 Carbon brush positive terminal 010 Positive power supply conductor
011 Carbon brush element 012 Flat permanent magnet in A side stator housing (014) 013 A side permanent magnet mounting ring 014 A side stator housing 015 Epicyclic gear mounting surface 016 Stator housing coupling surface 017 B side Flat circular permanent magnet in stator housing (050) 018 B side permanent magnet mounting ring 019
B side stator housing Tightening latch 020 Epicyclic gear planet wheel 021 Planet wheel shaft 022 Planet wheel bearing 023 Epicyclic gear planet wheel substrate 024 Swivel pulley
025 Inner Clutch Wheel Set 026 Latch that connects Inner Clutch Wheel Set (027) to A-side Rotor Housing (033) 027 Outer Clutch Wheel Set
028 Bearing 029 Sun ring of epicyclic gear 030 Latch for connecting sun ring (029) to rotor bearing block (003) 031 Spoke holes 032 A side rotor housing (0
33) Bearing 033 A-side rotor housing 034 Epicyclic gear ring gear 035 B-side rotor housing 036 B-side rotor housing (035) bearing 037 A-side rotor housing (014) bearing 038
Flange for coupling A-side and B-side rotor housings (033,035) 039 A-side and B-side rotor housings (0
33,035) screw hole 040 central hub 041 A
Side rotor housing (033) lock ring 042
Latch that connects the ring gear (034) of the epicyclic gear to the A side stator housing (014) Insert the latch when connecting the rotor bearing block (003) to the sun ring of the epicyclic gear (039) Notch for doing
044 carbon brush copper carbon alloy 045 carbon brush inner conductor 046 carbon brush spring
047 Carbon brush conductive plate 048 Carbon brush installation cap 049 Carbon brush lock nut 050 B side stator housing
051 Print coil on A side of multilayer mylar film 0
52 Dotted line showing printed coil on B side of multilayer mylar film 053 Spot welding part of printed coil on A side and B side of multilayer mylar film 054 Spoke
055 Bicycle wheel 056 Battery case 057 Charging socket
058 Speed control outlet 059 Governor handle 060 Clutch spring pawl 061 Hole for receiving clutch spring pawl (060)

Claims (4)

[Claims] 1. A flat rim type housing fixed to spokes of a bicycle wheel, a hollow central shaft fixed to a central hub of the bicycle wheel, a DC power source fixed to a frame portion of the bicycle, A motor having a rotor composed of a multilayer mylar film rotary coil fixed to the inside of the housing; an epicyclic gear fixed to the inside of the housing and driven by the motor to rotate the housing; Rotating a wheel of the bicycle to which the housing is secured by rotation of the housing, the DC power input cable being inserted through a hollow central shaft and connecting between the motor and the DC power source; A characteristic flat rim type motor drive mechanism for bicycles. 2. A swivel governor handle for controlling the voltage and current from the DC power supply to the motor.
A flat rim type motor drive mechanism for a bicycle as described above. 3. A flat rim type housing fixed to spokes of a bicycle wheel, a hollow central shaft fixed to a central hub of the bicycle wheel, a DC power source fixed to a frame portion of the bicycle, A motor having a rotor composed of a multilayer mylar film rotary coil fixed to the inside of the housing; an epicyclic gear fixed to the inside of the housing and driven by the motor to rotate the housing; A DC power input cable inserted through a hollow central shaft and connecting between the motor and the DC power source, and controlling voltage and current from the DC power source fixed to the handle portion of the bicycle to the motor. Equipped with a flat rim type motor drive mechanism for bicycles, characterized in that it is composed of a swivel governor handle Bicycle 4. A bicycle equipped with a flat rim type motor drive mechanism for a bicycle according to claim 3, wherein the flat rim type housing is fixed to the spokes of the front wheels of the bicycle.