JP2001336475A - System for generating electric power for car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for generating electric power for a car whereby electric power is generated without using an engine power and which is friendly to the environment. SOLUTION: The system for generating electric power is provided with a generator mounted in a car body, a motion direction transforming mechanism transforming a relative displacement of the car body for a wheel into a rotational movement and a transmission mechanism transmitting the rotational motion transmitted from the motion direction transforming mechanism to the generator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generation system for an automobile, which generates electric power by using vibration generated when the automobile is running.

[0002]

2. Description of the Related Art Conventionally, electricity required for an automobile is generated by a generator mounted on a vehicle body, temporarily stored in a battery, and then supplied to each electric device.

[0003]

However, since the above-mentioned generator extracts a part of the power of the engine and uses it as a power source of the generator, there is a problem that the fuel efficiency of the automobile deteriorates. .

The present invention has been proposed in view of the above problems, and has as its object to provide an environment-friendly automobile power generation system that can generate power without using the power of an engine.

[0005]

In order to achieve the above object, an automobile power generation system according to the present invention comprises a generator provided on a vehicle body and a movement direction conversion for converting a relative movement of the vehicle body with respect to wheels into a rotational movement. And a transmission mechanism for transmitting the rotational motion transmitted from the motion direction conversion mechanism to the generator.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle power generation system S1 according to a first embodiment of the present invention will be described in detail.

FIG. 1 is an explanatory diagram showing a state in which the vehicle power generation system S1 of the present embodiment is mounted on a vehicle. FIG. 2 is a front view of the suspension device. FIG. 3 is an explanatory diagram showing a cross section of a part of the vehicle power generation system S1 of the present embodiment.

[0008] The automotive power generation system S1 of the present embodiment.
Is provided on the rear wheel portion where the left and right wheels are directly connected by one axle shaft. The rear wheel of the car
A drive shaft 1 having a leading end connected to an engine (not shown) and transmitting the power of the engine, a differential (not shown) to which a rear end of the drive shaft 1 is connected, and a drive connected to the differential The axle shaft 3 is provided with wheels 4 provided at both ends of the axle shaft 3. The axle shaft 3 and the differential gear are assembled in the axle housing 2. A suspension device 6 is provided between the axle housing 2 and the main body 5. The suspension device 6 includes a leaf spring 601 and a shock absorber 602. Leaf spring 6
A leaf spring 601 includes a plurality of spring plates 7 arranged in the front-rear direction of the vehicle body 5 as shown in FIG.
The middle part in the longitudinal direction of the axle shaft 3
Attached to. Also, leaf spring 601
Are attached to the vehicle body 5 via brackets 9.

[0009] The power generation system S1 for a vehicle according to the present embodiment.
Is a battery 10 provided on the vehicle body 5 as shown in FIG.
And a generator 11, a movement direction conversion mechanism 12 disposed above the axle shaft 3, and a transmission mechanism 13 for connecting the movement direction conversion mechanism 12 and the generator 11.

The movement direction changing mechanism 12 includes a rack 121 and a pinion 122, and the rack 121 is erected on the axle housing 2 via a support member 14. The pinion 122 is rotatably supported by the support shaft 16. The support shaft 16 is provided between a support bracket 15 provided on the vehicle body 5 and a coupling member 21 described later.

The transmission mechanism 13 includes a one-way clutch 17, a coil spring 18, a flywheel 20, and a flywheel 2 provided on an inner peripheral portion of the pinion 122.
0 one-way clutch 19 provided on the inner peripheral portion
And a coupling member 21, one end of which is bolted to the side surface of the flywheel 20 and the other end of which is fixed to the rotating shaft 111 of the generator 11. The one-way clutch 17, the coil spring 18, , One-way clutch 19 and flywheel 20
Attached to. The coupling member 21 supports the shaft end of the support shaft 16 via a bearing 22. One end of the coil spring 18 is connected to the inner race 171 of the one-way clutch 17, and the other end is connected to the inner race 191 of the one-way clutch 19.

A description will be given of a method of generating power by the vehicle power generation system S1 of the present embodiment configured as described above. Since the vehicle has the axle shaft 3 suspended from the vehicle body 5 by the suspension device 6, the vehicle body 5 moves vertically relative to the axle shaft 3 when the vehicle receives vertical vibration or impact during traveling. Accordingly, the pinion 122 attached to the vehicle body 5 moves up and down while rotating on a rack 121 attached to the axle housing 2. The one-way clutch 17 provided on the inner peripheral portion of the pinion 122 transfers only one direction of the rotational force for rotating the pinion 122 to the inner race 171.
Through the coil spring 18. The one-way rotational force transmitted to the coil spring 18 is transmitted to the one-way clutch 19 via the inner race 191 and the flywheel 20 starts rotating in one direction. After the start of rotation, the flywheel 20 rotates by inertial force. Since the coupling member 21 is coupled to the flywheel 20, the coupling member 21 rotates around the support shaft 16 in one direction together with the flywheel 20. The rotational force of the coupling member 21 is transmitted to the rotating shaft 111 of the generator 11, the rotating shaft 111 of the generator 11 starts rotating, and the generator 11 operates. The electricity generated by the generator 11 is temporarily stored in the battery 10 and supplied to each electric device.

According to the automobile power generation system S1 described above, the relative movement of the vehicle body 5 displaced vertically with respect to the axle shaft 3 is controlled by the rack 121 provided on the axle housing 2 and the pinion 122 provided on the vehicle body 5. The rotation is converted into a rotational motion, and the transmission mechanism 13 having the one-way clutches 17 and 19 outputs the rotational force of the pinion 122.
Since power is generated by transmitting only the rotational force in one direction to the rotating shaft 111 of the generator 11, the vibration received by the vehicle during traveling can be reduced without applying the power of the engine to operate the generator 11. Power can be generated by effectively utilizing the impact.
Therefore, the fuel efficiency of the vehicle is improved, and energy saving can be achieved. That is, an environment-friendly power generation system can be provided.

Next, a vehicle power generation system S2 according to a second embodiment of the present invention will be described in detail.

FIG. 4 is an explanatory diagram of the vehicle power generation system S2 of the present embodiment. FIG. 5 is a view taken in the direction of arrows AA in FIG. FIG. 6 is a BB arrow view showing a part of FIG. 4 by a cross section.

The power generation system S2 for a vehicle according to the present embodiment.
As shown in FIG. 4, is provided on the rear wheel portion of the vehicle, and is provided between the vehicle body 24 and the leaf spring 26 attached to the axle housing 25. The axle shaft 2 is provided inside the axle housing 25.
7 are fitted, and wheels 28 are attached to both ends of the axle shaft 27.

The power generation system S2 for a vehicle according to the present embodiment.
Is a battery 2 provided on the vehicle body 24 as shown in FIG.
9, a generator 30, a movement direction conversion mechanism 31 disposed above the axle shaft 27, and a movement direction conversion mechanism 3.
1 and a transmission mechanism 41 for connecting the generator 30 with the transmission mechanism 41. As shown in FIGS. 4 and 5, the movement direction conversion mechanism 31 includes a roller 34 rotatably supported by a support member 33,
A leaf spring 35 having one end fixed to the leaf spring 26
And a sprocket 36 supported by the support member 40 on the vehicle body 24, and a chain 37 meshing with the sprocket 36. Then, one end 3 of the chain 37
Reference numeral 71 is locked to the leaf spring 26 by a fixing tool 38, and the other end 372 of the chain 37 is locked to the other end of the leaf spring 35 by a fixing tool 39. A coil spring 48 is attached to one end 371 of the chain 37. The support member 33 includes a pair of V-shaped arms 331 extending from the vehicle body 24 and a connection shaft 332 that connects lower ends of the V-shaped arms 331. A roller 34 is rotatably supported by the roller 34. The roller 34 faces a leaf spring 35 as shown in FIG.

As shown in FIG. 6, the support member 40 is inserted into the sprocket 36, and a support shaft 401 for rotatably supporting the sprocket 36, and a support bracket for supporting the end of the support shaft 401 to the vehicle body 24. The support shaft 401 is provided between a support bracket 402 provided on the vehicle body 24 and a coupling member 46 described later.

The transmission mechanism 41 has the same configuration as the transmission mechanism 13 of the automotive power generation system S1 of the first embodiment. The transmission mechanism 41 includes a one-way clutch 42 provided on an inner peripheral portion of the sprocket 36 and a spring 4.
3, a flywheel 44, a one-way clutch 45 provided on the inner peripheral portion of the flywheel 44, and one end is bolted to a side portion of the flywheel 44, and the other end is fixed to the rotating shaft 301 of the generator 30. And a coupling member 46. The coupling member 46 supports the shaft end of the support shaft 401 via the bearing 47. One end of the spring 43 is connected to the inner race 421 of the one-way clutch 42, and the other end is connected to the inner race 45 of the one-way clutch 45.
It is connected to 1.

A description will be given of a method of generating power by the vehicle power generation system S2 of the present embodiment configured as described above. Since the axle shaft 27 is suspended from the vehicle body 24 by the leaf spring 26, the vehicle body 24 moves vertically relative to the axle shaft 27 when the vehicle receives vertical vibration or impact during traveling. Accordingly, the roller 34 attached to the vehicle body 24 moves up and down while slidingly contacting a leaf spring 35 attached to the leaf spring 26. When the roller 34 moves downward, the leaf spring 35 receives a downward force from the roller 34 and bends in the direction of arrow X in FIG. 4 to pull the other end 372 of the chain 37. When the other end 372 of the chain 37 is pulled in the X direction, the coil spring 48 attached to the one end 371 of the chain 37 expands, and the chain 37 moves in the X direction.
Rotates counterclockwise in FIG. In addition, roller 3
When 4 moves upward, the leaf spring 35 and the coil spring 48 pull the chain 37 in the arrow Y direction in FIG. 4 in an attempt to return to the original position by the restoring force. As a result, the chain 37 moves in the Y direction.
Rotates clockwise in FIG. That is, roller 3
The up and down movement of 4 causes the sprocket 36 to rotate in both clockwise and counterclockwise directions.

The one-way clutch 42 provided on the inner peripheral portion of the sprocket 36 transmits only one direction of the rotational force for rotating the sprocket 36 to the spring 43 via the inner race 421. The rotational force in one direction transmitted to the spring 43 is applied to the inner race 4.
The flywheel 44 is transmitted to the one-way clutch 45 via 51 and starts to rotate in one direction. After the start of rotation, the flywheel 44 rotates by inertial force. Since the coupling member 46 is coupled to the flywheel 44, the coupling member 46 rotates in one direction around the support shaft 401 together with the flywheel 44. The torque of the coupling member 46 is transmitted to the rotating shaft 301 of the generator 30 and
Starts rotating, and the generator 30 operates. The electricity generated by the generator 30 is temporarily stored in the battery 29 and supplied to each electric device.

According to the automobile power generation system S2 described above, the relative movement of the vehicle body 24 with respect to the axle shaft 27 is converted into the rotational movement of the sprocket 36 meshing with the chain 37 displaced by the bending of the leaf spring 35. The transmission mechanism 41 provided with the 451 transmits only one-way rotation force of the rotation force of the sprocket 36 to the rotation shaft 301 of the generator 30 to generate power. Without applying the power of the engine, it is possible to generate electricity by effectively utilizing the vibrations and shocks that the vehicle experiences while traveling. Therefore, the fuel efficiency of the vehicle is improved, and energy saving can be achieved. That is, an environment-friendly power generation system can be provided.

Although the vehicle power generation systems S1 and S2 according to the present embodiment are provided in a vehicle having a leaf spring type suspension device, the present invention is not limited to this. For example, a coil spring type or double wish type The vehicle may be provided with a bone type suspension device. Further, the power generation systems S1 and S2 for a vehicle of the present embodiment are provided on the rear wheel side of the vehicle, but are not limited to this, and may be on the front wheel side.

[0024]

As described above, according to the power generation system for an automobile of the present invention, the power generator provided on the vehicle body, the motion direction conversion mechanism for converting the relative motion of the vehicle body with respect to the wheels into rotational motion, and the motion direction conversion mechanism Since a transmission mechanism for transmitting the transmitted rotational motion to the generator is provided, it is possible to generate electric power by effectively utilizing vibrations and impacts during traveling of the automobile. Therefore, energy saving can be achieved and environmentally friendly power generation can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state in which a vehicle power generation system according to a first embodiment is mounted on a vehicle.

FIG. 2 is an enlarged front view of the suspension device.

FIG. 3 is an explanatory view showing a cross section of a part of the vehicle power generation system according to the first embodiment;

FIG. 4 is an explanatory diagram of a power generation system for a vehicle according to a second embodiment.

FIG. 5 is a view taken in the direction of arrows AA in FIG. 4;

FIG. 6 is a cross-sectional view of a part of FIG.

[Explanation of symbols]

 S1, S2 Automobile power generation system 3 Wheel 5 Body 11 Generator 12 Motion direction conversion mechanism 13 Transmission mechanism 24 Body 28 Wheel 30 Generator 31 Motion direction conversion mechanism 41 Transmission mechanism

Claims (1)

[Claims] An electric generator provided on a vehicle body, a movement direction converting mechanism for converting a relative movement of the vehicle body with respect to wheels into a rotational movement,
A transmission mechanism for transmitting the rotational motion transmitted from the motion direction conversion mechanism to the generator.