JPH06312629A - Auxiliary drive device in restart or re-acceleration of vehicle - Google Patents

Abstract

PURPOSE:To transmit accumulated energy to a wheel so as to be utilized as auxiliary power in the case of the restart of vehicles and save energy consumption by taking out running energy, etc., during inertia running time of a vehicle from a rotating wheel so as to accumulate the energy in a spring, etc. CONSTITUTION:As a lever 17 is push-pressed by a hydraulic cylinder 19 when a brake is stepped cloring running of a vehicle, plural clutches 5-1, 5-2 are placed in engagement. As a pulley 1 is rotated in (A) direction, a wire 21 is wound up and spring 2 is stretched and energy is accumulated. Meantime, as the spring 2 is shrunk and the wire 21 is stretched in (D) direction when a signal for disengaging both clutches 5-1, 5-2 is given to the hydraulic cylinder 19, an inner gear 22 fixed on one side of the pulley 1 is rotated in (B) direction. A gear 24 is rotated in (E) direction and also an one direction clutch 25 connected there to is also rotated in the same direction. Further, as a shaft 4 is rotated in (C) direction, this torque is transmitted to a drive shaft and vehicles is advanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary drive device that helps reduce energy consumption when a vehicle restarts or re-accelerates.

[0002]

2. Description of the Related Art Although various ideas for accumulating and reusing kinetic energy have been implemented, for example, there is a flywheel of a press machine, and hydroelectric power generation is performed by converting energy form. Vehicles and the like have a mechanism for generating rotational force from fuel by a heat engine to give rotational force to wheels, and, in the simplest case, there are bicycles that use weight to move pedals to rotate wheels.

By the way, when stopping a traveling vehicle, a brake is naturally used, but at present, although efforts are made only to stop the vehicle in the shortest possible time, the vehicle is Will run a few meters before it stops due to inertia. If the kinetic energy of the running vehicle is regarded as positive energy, the energy that resists the inertial kinetic energy of the vehicle from the start of the brake operation to the stop can be regarded as negative energy.
There is no example of a method of using negative energy or a method of using kinetic energy obtained by gravity of a vehicle when going down a slope, which has been implemented up to now.

[0004]

SUMMARY OF THE INVENTION The problem to be solved is that the traveling vehicle has energy for traveling due to inertia or kinetic energy obtained by gravity when traveling down a slope, for example, until the vehicle stops after braking. It is an object of the present invention to provide an auxiliary drive device that can utilize this energy when re-starting or re-accelerating by accumulating in the vehicle.

[0005]

SUMMARY OF THE INVENTION The present invention is based on running energy of a vehicle during inertial running, for example, during inertial running until the vehicle is stopped by a brake operation, or gravity when going down a slope. The vehicle is equipped with a storage means for taking out and temporarily storing the kinetic energy obtained by the vehicle through the rotating wheels. Here, the energy is taken out at a portion such as a wheel drive shaft or a drive output transmission system mechanism portion.

One storage means is a spring, which is attached to one end of a wire wound around a pulley which is fitted to a shaft for separately supporting the rotational force of the drive shaft of a wheel, thereby temporarily running energy. When the vehicle starts or accelerates again, the spring is contracted to convert the stored energy into rotational force and transmit it to the wheels to drive or assist the vehicle during restart or reacceleration. Means are provided.

Another storage means is a container capable of compressing and / or decompressing gas or liquid, for example, a pinion fitted to a shaft separately supporting the rotational force of a wheel drive shaft and a rack meshing with the pinion. , A hydraulic or pneumatic cylinder is provided at one end of the cylinder to temporarily store traveling energy, and when the vehicle is started or re-accelerated again, the energy is released to provide power or auxiliary power to the wheels. To do.

Another storage means is a storage battery, in which the rotational force of the wheel rotation shaft is converted into electric current by a generator fitted to a separately supported shaft and stored in a storage battery provided separately, thereby temporarily running energy. As described above, when the vehicle re-starts or re-accelerates, the worm wheel fitted to the shaft and the motor for driving the worm screw meshing with the worm wheel are energized and rotated, thereby giving power or auxiliary power to the wheel. A driving means is provided.

Still another storage means is a flywheel, in which a flywheel is fitted to another shaft via a bevel gear and a shaft fitted to a shaft for separately supporting the rotational force of the wheel rotation shaft, and inertial traveling is performed. The driving energy is temporarily stored as the rotation of the flywheel, and the driving means for transmitting the rotational force of the flywheel to the shaft to give power or auxiliary power to the wheels when the vehicle is started again or re-accelerated as described above. To have.

One of the features is that the command system for operating the auxiliary drive device is linked with at least one of the brake, the clutch gear and the accelerator system.

[0011]

Embodiment 1 FIG. 1 is a perspective view of an embodiment of the device of the present invention, showing an energy storage means by a pulley 1 and a spring 2. FIG. 2 is a drive shaft of a wheel (not shown).
3 is a perspective view partially showing in cross section the mechanism for rotating the pulley 1 by transmitting the rotational force to the shaft 4 via the belt 3 and connecting the clutch 5. FIG.

A gear (not shown) is fitted on the drive shaft of the wheel, and the gear 6 and the shaft 4 are provided via the belt 3. Both ends of the shaft 4 are supported by bearings 7-1 and 7-2 and fixed to the vehicle body. In FIG. 2, a spline 8 is provided on a part of the shaft 4, and a hub 9 is slidably provided so as to be fitted therein. Friction plates 10-1 and 10-2 are arranged on the hub 9 so as to sandwich the clutch 5-1. A plate 11, an adjusting nut 12 and an adjusting bolt 13 are provided in order to apply pressure to them from the side. It is configured as a type of torque limiter. Further, in order to slide the hub 9 on the spline 8, a grooved ring 14 is fitted and fixed to the hub 9 with a nut 15. In the groove of the grooved ring 14, the roller 1
6 is fitted, and the roller is fixed to the lever 17 having an annular shape.
One end of the lever 17 is pivotally supported on the shaft 18, and the lever 17
The other end of is connected to the hydraulic cylinder 19. Pipes 20-1 and 20-2 are arranged in the hydraulic cylinder 19,
Oil is pumped in conjunction with a hydraulic cylinder (not shown) of the wheel brake.

While the vehicle is traveling, the hydraulic cylinder 19 pushes the lever 17 and the clutch 5-1 pushes against the clutch 5-2 at the same time when the brake pedal is depressed for the purpose of stopping. Grooves provided on the side surface of the clutch come to mesh with each other, and the pulley 1 rotates.

When the pulley 1 rotates in the direction of arrow A in FIG. 1, the wound wire 21 is wound up and the spring 2 is pulled. The other end of the spring 2 is fixed to a fixed end 26 of the vehicle body. Since the length of the spring 2 pulled is naturally limited to a certain limit, a torque limiter is provided in the mechanism for holding the clutch 5-1 shown in FIG. Therefore, it does not matter how many wheels rotate after the brake operation.

Next, a mechanism for releasing the energy accumulated by pulling the spring 2 and extracting it as rotational energy will be described. In FIG. 1, an internal gear 22 is fixed to one surface of a pulley 1, and an idle gear 23 inscribed therein and a gear 24 meshing with the idle gear 23 are fitted on a shaft 4 via a one-way clutch 25. Although not shown, the gear 24 is rotatably supported by the shaft 4 via a bearing, and a one-way clutch 25 is continuously fitted to the side surface. Therefore, the axis 4
However, assuming that it is rotating in the direction of arrow C shown in FIG. 1, the one-way clutch 25 is in a slipping state.

The clutches 5-1 and 5 are attached to the hydraulic cylinder 19.
When a signal to release -2 is given, the spring 2 contracts and the wire 21 is rapidly pulled in the direction of the arrow D, and the internal gear 2
2 is rotated in the direction of arrow B. This rotational force is transmitted to the gear 24 and rotates in the direction of arrow E, and the one-way clutch 25 connected thereto also rotates in the same direction. At this time, since the shaft 4 is in a stationary state, the one-way clutch engages with the shaft 4, and as a result, the shaft 4 is rotated in the direction of arrow C.
Therefore, the rotational force of the shaft 4 is transmitted to the drive shafts of the wheels via the belt 3 shown in FIG. 2 and acts so as to move the vehicle forward. After that, when the vehicle speed is increased by the engine, the rotation speed of the shaft 4 becomes faster than the rotation speed of the one-way clutch 25,
The one-way clutch and the shaft 4 come to slide on each other.

[0017]

Second Embodiment FIG. 3 shows another embodiment for accumulating running energy. Instead of the pulley 1 shown in the first embodiment, a pinion 27 is provided, an internal gear 22 and a clutch 5-.
A rack 28 that is integrally bolted to the rack 2 and that meshes with the rack 2 is slidably provided. The rack 28 is supported on a slide pedestal 29. Further, one end of the rack 28 is connected to the piston side of a hydraulic cylinder 30, and the other end of the cylinder is pivotally supported by a fixed end 31 of the vehicle body. A pipe is connected to one end of the hydraulic cylinder 30, and the one-way valve 33 and the electromagnetic opening / closing valve 34 are branched to join each other and connected to the hydraulic / pneumatic cylinder 35. Piston 36 in hydraulic / pneumatic cylinder 35
Cylinder 35 is operated by either hydraulic pressure or pneumatic pressure.
Move in.

As described in the first embodiment, when the hydraulic pressure is applied to the hydraulic cylinder 19 in FIG. 2 at the same time as the brake operation, the clutches 5-1 and 5-2 are connected and the rotational force of the shaft 4 is applied to the pinion 27. (Fig. 3), it rotates in the direction of arrow F. The rack 28 moves in the direction of the arrow G, the oil 37 in the hydraulic cylinder 30 is pushed in, and flows out into the pipe 32. At this time, the electromagnetic opening / closing valve 34 is closed, the oil 37 flows into the hydraulic / pneumatic cylinder 35 through the one-way valve 33, and pushes out the piston 36 in the direction of the arrow H to remove the air 38 in the cylinder. It is compressed and once stored as elastic energy.

When the vehicle traveling speed is greatly reduced or stopped to try to accelerate again, or when going down a slope and when accelerating again after traveling with engine braking, the accelerator pedal is naturally depressed, but a switch interlocked with this accelerator pedal. When the electromagnetic opening / closing valve 34 is energized (not shown) to open the circuit, the restoring elastic force of the accumulated compressed air causes the piston 36 to be pushed out in the direction of arrow I, and the oil 37 causes the electromagnetic valve 34 to push the pipe 32. It flows through into the hydraulic cylinder 30 and pushes the rack 28 in the direction of arrow J, and the pinion 27 rotates in the direction of arrow K.

The rotation of the pinion 27 in the direction of arrow K is transmitted to the internal gear 22 and, as shown in Embodiment 1 and FIG.
Is rotated in the direction of arrow C, and the wheel drive shaft is rotated via the belt 3 (FIG. 2).

[0021]

[Embodiment 3] FIG. 4 shows an example in which running energy is stored in a storage battery (not shown) as electric energy by a generator during running, and the motor is rotated and driven at the time of starting the vehicle. The point that the rotational force of the vehicle wheel drive shaft is transmitted to the shaft 4 via the belt 3 is the same as in the above-described embodiment. A generator 40 is connected to the shaft 4 via a coupling 39, and the generated current is stored in a storage battery. A worm wheel 42 is provided on the shaft 4 via a one-way clutch 41, and a worm screw 43 meshing with the worm wheel 42 has a bearing 44.
-1, 44-2 and a shaft 45 support the shaft. One end of the shaft 45 is connected to a motor 47 via a coupling 46.

The rotation direction of the shaft 4 is defined by the arrow L (FIG. 4). At this time, the one-way clutch was in a slipping state,
The worm wheel 42 is stationary. Next, when the vehicle restarts after being stopped by the brake operation, the electric current from the storage battery is supplied to the motor 47 by the switch linked to the accelerator pedal. The rotational force of the motor causes the worm wheel 42 to rotate in the direction of arrow M, and the one-way clutch is engaged, which causes the shaft 4 to rotate in the direction of arrow L and the rotational force to the drive shaft of the wheel via the belt 3. Is transmitted. The electric circuit is set to turn off the power when the current flowing to the motor 47 is close to the current when the motor 47 is not loaded. That is, when the speed of the vehicle increases due to the driving force of the engine, the rotation speed of the shaft 4 increases, and when the one-way clutch slips, the load only rotates the worm wheel and the load decreases extremely. is there.

In the case of an ordinary automobile or the like, since a storage battery for storing electricity by power generation by a generator driven by a belt from the rotating shaft of an engine is stored, this storage battery may be used, but when the vehicle is inertially traveling. Since the energy of is used, the system takes a rotational force from the wheel drive shaft to generate electricity. However, it is better to use these storage batteries together in case of emergency escape in case of an accident such as engine stop at a railroad crossing.

[0024]

Fourth Embodiment FIG. 5 shows an example in which running energy is accumulated in a flywheel. Similar to the above-described embodiment, the rotational force of the wheel drive shaft is transmitted to the shaft 4 via the belt 3 and the pulley 1, and the shaft 4 is supported by the bearing 7-1 and the like. A bevel gear 48-1 is fitted on the shaft 4, and the rotational force is transmitted to the shaft 49 via a bevel gear 48-2 meshing with the bevel gear 48-1. The shaft 49 is supported by bearings 50 and the like. A one-way clutch 53 is internally supported by a flywheel 51 and a pulley 52 fitted on the shaft 49. If the rotation direction of the shaft 4 is now indicated by arrow N, the shaft 49
The rotation direction of is the direction of arrow O, and if the engaging direction of the one-way clutch is the same direction, the pulley 52 and the flywheel 51 rotate in the direction of arrow P. Rotational force is transmitted to the worm screw shaft 56 via the pulley 55 fitted to the shaft 56 and the belt 54. The worm screw shaft 56 is provided on the same axis as the shaft 56 via an electromagnetic clutch 58, and is rotatably supported by a bearing or the like. Transmission of rotation of the shaft 56 to the shaft 57 can be arbitrarily performed by opening and closing the clutch 58. A worm screw 59 is attached on the shaft 57,
A worm wheel 60 meshing with this is mounted on the shaft 4 via a one-way clutch 61. Considering the case where the electromagnetic clutch 58 is closed, the worm screw 59 is rotated, and the worm wheel 60 is rotated in the direction of arrow Q, when the rotation speed of the worm wheel 60 is larger than the rotation speed of the shaft 4, The one-way clutch 61 is in a meshed state and drives the shaft 4.

The operation state of this embodiment will be described. When the vehicle is traveling, the rotational force transmitted from the drive shafts of the wheels rotates the flywheel 51 in the direction of arrow P.
When the vehicle stops due to the brake operation, the shaft 4 stops, but the flywheel 51 continues to rotate due to the function of the one-way clutch 53. At this time, the electromagnetic clutch 58 is assumed to be open. When the electric button is moved in conjunction with the accelerator pedal of the vehicle and the electromagnetic clutch 58 is closed, the rotational force of the flywheel is worm screw 59.
The worm wheel 60 is rotated in the direction of arrow A. Since the shaft 4 is stationary in this state, the one-way clutch 61 acts so as to mesh with each other, and as a result, the shaft 4 is given a rotational force to drive the wheel shaft via the belt 3.

Until the number of rotations of the worm wheel 60 becomes equal to that of the shaft 4, the one-way clutch is in the engaged state,
When the vehicle is accelerated by the engine and the rotation speed of the shaft 4 rises, the one-way clutch becomes in a slipping state, and the role of auxiliary power for starting or reaccelerating the vehicle ends. The actual problem, from the standstill state of the vehicle,
Since the purpose is to reduce the engine load during rotation, long-time driving is unnecessary.

In this embodiment, when the flywheel is installed in the vehicle, it is difficult to secure a space, so the flywheel is placed horizontally. However, if there is enough space, the flywheel can be directly attached to the shaft 4 so that it is simpler. It can have a structure. Further, if a clutch mechanism that rotates the flywheel only when braking or going down a slope is added, more effective use of energy can be achieved.

[0028]

As described above, the kinetic energy caused by gravity is temporarily stored by the storage means when the vehicle runs inertially or after going down a slope after the brake is operated while the vehicle is operating, and the kinetic energy is restarted or restarted. Since it can be used as power for accelerating or auxiliary driving force, waste of fuel is a problem especially in city driving where there are many opportunities to repeatedly start and stop, but according to the present invention, restarting or Since it is possible to suppress the use of fuel in the case of reacceleration, it is possible to make a great contribution to the improvement of fuel use efficiency, which in turn contributes to energy saving.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an auxiliary drive device using a coil spring as an energy storage means in an embodiment of the present invention for re-starting or re-accelerating a vehicle.

FIG. 2 is a partial cross-sectional view of an example of driving means for converting stored energy into rotational force based on depression of a brake pedal in an embodiment of an auxiliary drive device when the vehicle restarts or re-accelerates according to the present invention. FIG.

FIG. 3 is a perspective view schematically showing another embodiment of the auxiliary drive device in the case of re-starting or re-accelerating the vehicle of the present invention, which uses a gas / fluid cylinder as an energy storage means.

FIG. 4 is a perspective view showing a driving device in another embodiment of the auxiliary driving device when a vehicle is restarted or re-accelerated according to the present invention, in which a storage battery is used as an energy storage means.

FIG. 5 is a perspective view schematically showing a device using a flywheel as an energy storage means in still another embodiment of the auxiliary drive device in the case of re-starting or re-accelerating the vehicle of the present invention.

[Explanation of symbols]

 1 Pulley 2 Spring 3 Belt 4 Shaft 5-1 and 5-2 Clutch 6 Gear 18 Shaft 19 Hydraulic cylinder 22 Internal gear 23 Idle gear 24 Gear 25 One-way clutch 27 Pinion 28 Rack 30 Hydraulic cylinder 33 One-way valve 34 Electromagnetic opening / closing valve 35 Hydraulic / Air Cylinder 36 Piston 40 Generator 41 One-way Clutch 42 Worm Wheel 43 Worm Screw 45 Shaft 47 Motor 48-1, 48-2 Bevel Gear 49 Shaft 51 Flywheel 52 Pulley 53 One-way Clutch 54 Belt 55 Pulley 58 Electromagnetic Clutch 59 Worm screw 60 Worm wheel 61 One-way clutch

Claims (2)

[Claims] 1. A spring, gas, or liquid for compressing and / or decompressing a spring for extracting and temporarily storing kinetic energy obtained by the vehicle due to running energy during inertial running of the vehicle or gravity when going down a slope through a rotating wheel. When equipped with energy storage means such as a container, a storage battery, and a flywheel, and when the vehicle starts or accelerates again, the accumulated energy is converted into rotational force and transmitted to the wheels to restart or re-accelerate. An auxiliary driving device for a vehicle, comprising: a driving unit serving as auxiliary power. 2. The auxiliary drive device for a vehicle according to claim 1, wherein a command system for operating the auxiliary drive device is interlocked with at least one of a brake, a clutch gear and an accelerator system.