JPH06241243A - Inertia travel device of automobile - Google Patents

Abstract

PURPOSE:To secure such a device as reducing the consumption of fuel and power for an automobile using liquid fuel or battery power sharply. CONSTITUTION:A first turning shaft 9 using an output shaft as an input is installed there, and when it is normally rotated, a second turning shaft 7 is driven in the same direction via a one-way conical roller bearing clutch, and thereby an automobile is traveled by the driving torque. A travel speed is controllable by means of an operating angle of an accelerator pedal. When this pedal is reset and rotational speed in a driving source goes down, a driving wheel alone is freely rotated by action of the one-way conical roller bearing clutch and thus inertia traveling takes place. When a brake pedal is operated, the clutch is converted into a two-wat clutch, and engine braking or regenerative braking is operated, and this travel mode is continued as it is. When the accelerator pedal is operated, the travel mode is automatically released, and it is thus converted into an inertia traveling mode.

Description

Detailed Description of the Invention

[0001]

Industrial Applicability The device of the present invention can be applied to an automobile and an electric vehicle using an internal combustion engine.

There are conventional techniques for the same purpose. For example, Japanese Patent Publication No. 52-101529 and Japanese Patent Publication No. 55-2252.
There is number 3. A friction clutch mechanism utilizing sliding friction is adopted in these techniques, and thus the service life is very short and not practical. Therefore, there is no practical application. There are driving means to achieve the same purpose. For example, when driving a train, if the electric power supply to the electric motor is stopped on a downward slope, or if the vehicle speeds up and the speed increases, the electric power supply is stopped and the vehicle runs with inertia. Even in the case of a car, inertial running is performed. For example, it is a means for returning the accelerator pedal and traveling on a long downhill slope with the chain lever set at the neutral position. In this case, since the position of the neutral position is frequently changed, wear of the friction clutch causes an accident, which is prohibited by law.

[0002]

It is an object of the present invention to obtain a device for reducing the fuel or electric power consumed by half while the automobile is running. For this reason, it is necessary to safely and reliably switch between running at a neutral position and running with engine braking. There are the following problems in solving the above problems. Solving such a problem is also an issue. First
In addition, the time to reach the destination during normal driving must not be extended. Secondly, since it is not allowed that the driving sensation has an abnormal feeling, it is necessary to be able to drive similar to the conventional driving sensation. Thirdly, the weight reduction of automobiles is currently performed for the same purpose, but this cannot be adopted because it damages the human body in the event of a collision accident.

[0003]

According to a first aspect of the present invention, there is provided a device for performing inertial running by being interposed in a part of a torque transmission device that travels by transmitting output torque of an automobile prime mover to wheels, and is rotatably supported by a bearing. No. 1 rotary shaft, a metal truncated cone whose lower bottom center is fixed to an end of the rotary shaft, a second rotary shaft rotatably supported by a bearing, and an end of the rotary shaft. The central part of the upper bottom surface is fixed to, and the hollow conical frustum made of metal in which the inner peripheral surface is held to face the outer periphery of the side surface of the circular truncated cone at a predetermined gap length, and in the space between the circular truncated cone and the hollow circular truncated cone. A plurality of a plurality of circular cones are mounted side by side while maintaining a predetermined inclination angle with respect to the generatrix of the truncated cone, rolling in the void and having a large diameter bottom face on the opening side of the hollow truncated cone. Elongated conical roller and truncated cone with the small diameter end of the conical roller A device that loosely fits and holds the outer circumference of the upper bottom surface at an equal pitch, and an elongated shape on the outer circumference of a disk supported so as to be rotatable with respect to the first rotation axis on the lower bottom surface side of the truncated cone. A device for loosely fitting and holding the large-diameter end portion of the conical roller at an equal pitch, and controlling the rotation of the disc at a predetermined angle in the forward and reverse directions to tilt the elongated conical roller with respect to the generatrix line. A driving device for selecting and holding a first mode for holding the angle at a predetermined value and a second mode for holding the same inclination angle in the opposite direction with respect to the generatrix;
A device for converting to the first mode at the initial stage of stepping on the accelerator petal, a device for converting to the second mode at the initial stage of stepping on the brake petal, and first and second
And a means for transmitting the torque of the prime mover by either of the two rotating shafts and transmitting the torque to the wheel by the other.

[0004]

A one-way conical roller bearing clutch device is mounted between the prime mover and the wheels. When the accelerator pedal is stepped on while the vehicle is running, the clutch device is converted into a one-way clutch and inertial running is performed in the initial stage, so that the consumption of gasoline or the consumption of electric power can be reduced. When the brake pedal is stepped on, the clutch device is converted into a bidirectional clutch in the initial stage, the prime mover and the wheels are coupled, and the engine brake can be actuated to decelerate, so that wear of the brake can be prevented. Therefore, there is an effect that fuel or electric power consumption can be reduced without changing the driving feeling.
Further, since the device of the present invention has no sliding friction mechanism, it has the effect of increasing the service life.

[0005]

The details of the present invention will now be described with reference to examples.
FIG. 1 is an explanatory diagram illustrating the configuration of an automobile to which the device 4 or 4a of the present invention is applied. Reference numeral 1 is a gasoline engine, the output of which is input to the automatic transmission 3 via the fluid clutch 2. By the output rotary shaft of the transmission 3,
The device 4 of the present invention is driven, and the differential gear device 5 is driven by the output shaft thereof. In the case of an electric vehicle, the symbol 1 is a DC motor and the fluid clutch 2 is removed. By the two outputs of the differential gear device 5, the left and right rear wheels 6a, 6b
Is being driven. The same purpose is achieved by moving the inventive device 4 to the position indicated by the symbol 4a.

Next, details of the device of the present invention shown by symbol 4 are shown in FIG.
Will be explained. In FIG. 2, the left end of the rotary shaft 9 is shown in FIG.
Is connected to the output shaft of the transmission 3. The right end of the rotary shaft 7 serves as the input shaft of the differential gear device 5 of FIG. Symbols 7a and 7b indicated by dotted lines respectively support ball bearings of the rotating shafts 9 and 7, respectively, so that the rotating shafts are rotatable. The rotating shaft 7 is fixed to the center of the bottom surface of the rotor 8 that is a hollow truncated cone. The rotor 8 is made of metal, the details of which are shown in FIG. In FIG. 5, the outer peripheral surface of the rotor 8 is shown by a solid line,
The inner peripheral surface is indicated by a dotted line. The rotary shaft 7 is fixed so as to match the central axis of the rotor 8.

A predetermined gap is maintained between the inner peripheral surface of the rotor 8 and the outer peripheral surface of the truncated cone 11 made of metal, and the lower bottom central portion of the truncated cone 11 is fixed to the rotating shaft 9. Only the truncated cone 11 is shown in FIG. In FIG. 3, a circular truncated cone 11 is fixed to the right end of the rotary shaft 9, both of them rotate synchronously, and the outer peripheral surface of the circular truncated cone 11 is aligned with the inner peripheral surface of the rotor 8 of FIG. opposite. When the truncated cone 11 is large, a cavity may be provided inside. The truncated cone 11 is replaced by the rotor 11
I call it. A plurality of conical rollers 13a, 13b, ... Are juxtaposed in the space between the inner peripheral surface of the rotor 8 and the outer peripheral surface of the rotor 11 at equal pitches.

FIG. 4 shows the details of the conical roller 13a. It has an elongated shape and has rotating shafts 14a and 14b protruding from both ends. Rotors 8 and 11 and conical roller 13
Since a, 13b, ... May slide against each other, it is preferable to use stainless steel for rust prevention. Disc 1 in Figure 2
2b is fixed to the right end of the rotor 11, and the disk 12a is in contact with the left end of the rotor 11 and is held so as to be rotatable left and right around the rotation shaft 9 by a predetermined angle. A circular ring 12c is fixed to the circular plate 12a, and the circular ring 12c is loosely fitted on the rotary shaft 9.

A conical roller 13 is provided on the outer peripheral portion of the disk 12b.
Holes in which the rotary shafts at the right ends of a, 13b, ... Are loosely fitted are provided at the same pitch as the number of conical rollers so that the conical rollers can be rotated and moved in the axial direction. FIG. 6 is a plan view of the disk 12a as viewed in the direction of arrow A in FIG. 6, holes 24a, 24b, ... Are provided on the outer peripheral surface of the disk 12a, and the left end rotary shafts of the conical rollers 13a, 13b, ... Are rotatable in the holes as shown in FIG. Also, it is loosely fitted so as to be movable in the axial direction. The spindle 15a that is planted on the bottom surface of the rotor 11 is the disk 1
A hole (not shown in the drawing, which is an arc-shaped hole so that the disc 12a can be rotated left and right) is inserted through and projects from the upper surface of the disc 12a. The central portion 23 of the mild steel actuator 15 is loosely fitted to the support shaft 15a.

The electromagnetic solenoids 19a and 19b are the disk 12
It is fixed to a, and the arcuate portions at both ends of the actuator 15 are inserted into the central holes thereof. Electromagnetic solenoid 19
When a is energized, the actuator 15 is attracted, the disk 12a rotates relative to the rotor 11 by a set angle in the clockwise direction, and when energized by the electromagnetic solenoid 19b, the actuator 15 moves in the opposite direction. The disk 12a is attracted by and rotates by an angle set counterclockwise. Other electromagnetic devices may be used as long as they can achieve the above-mentioned object. The same object is achieved by the means shown in FIG.
In FIG. 9, the support shaft 15a is planted on the disk 12a, and the free ends of the mild steel actuators 30a and 31a are respectively supported by the support shaft 1a.
5a is loosely fitted. Symbols 30 and 31 are well-known electromagnetic plungers, and although the electromagnetic plungers 30 and 31 are not shown, they are fixed to a disc surface whose central portion is fixed to the rotary shaft 9 in FIG. When the electromagnetic plunger 30 is energized, the actuator 30a is attracted and the disc 12a rotates clockwise by a set angle, and when the electromagnetic plunger 31 is energized, the actuator 31a is attracted and the disc 12a is rotated. Rotates counterclockwise by the set angle.

As can be seen from the above description, the disk 12a
The right and left rotations of the conical roller 1 with respect to the rotor 11
3a, 13b, ... Are tilted to the left and right by an equal angle from the generatrix of the rotor 11. For example, the conical roller 13b is inclined with respect to the generatrix 13 shown by the dotted line in FIG. In FIG. 2, when the rotary shaft 9 rotates in the direction indicated by the arrow B, the conical roller 13b rotates in the opposite direction.
It rolls upward in the drawing and moves to the right at the same time. Therefore, it penetrates into the gap between the rotors 8 and 11, and drives the rotor 8 in the direction of arrow B. Therefore, the rotating shafts 9 and 7 rotate synchronously. The above-mentioned circumstances are exactly the same for the other conical rollers. In order to increase the driving torque, it is preferable to increase the number of conical rollers 13a, 13b, .... Since the conical rollers 13a, 13b, ... Are moved in the axial direction, the length of the conical rollers in FIG. 4 must be smaller than the distance between the discs 12a and 12b by a predetermined value. If the rotation speed of the rotating shaft 9 is decreased during the synchronous rotation, the conical rollers 13a, 13
Since b, ... Are rolled by the rotor 8 in the same direction as the arrow B, they move to the left and are converted into a mode of floating in the gap between the rotors 11 and 8. Therefore, the rotating shaft 7 and the rotor 8 are converted into a mode in which they rotate independently of the rotating shaft 9 and the rotor 11. When the rotating shaft 9 is rotated faster than the rotating shaft 7, the conical rollers 13a and 13b move rightward again and the rotors 11 and 8 rotate.
Clutch to rotate synchronously.

As understood from the above description, the one-way conical roller bearing clutch is provided. As described above, when the drive rotary shaft 9 becomes slow and the driven rotary shaft 7 is freely rotating, the conical rollers 13a, 13b, ... Are rotated by the electromagnetic device of FIG. 6 or 9. When the conical roller is converted to the opposite inclination angle with respect to the generatrix via, the conical roller moves to the right and bites into the gap between the rotors 11 and 8, and clutches both to convert into a mode of synchronous rotation. Therefore, it is converted to a bidirectional clutch instead of a one-way clutch. At this time, when the torque for increasing the rotation of the rotary shaft 9 is applied again, the conical rollers 12a, 13b, ...
Since it rolls in the opposite direction, it is moved to the left and the rotor 1
Although they are loosely fitted in the gap between 1 and 8, at the same time, if the conical rollers 13a, 13b, ... Are made to have the opposite inclination angles by the energization of the electromagnetic devices of FIGS. 6 and 9, the rotor 11 is moved to the right. And 8
Clutch and convert to the first mode.

Next, the relationship between the electromagnetic device for switching the above-mentioned modes and the running of the automobile will be described with reference to FIG.
In this case, the rotary shaft 9 is driven by the engine of the automobile, and the rotary shaft 7 drives the wheels. In FIG.
Symbols 22a and 22b are positive and negative terminals of the DC power supply. When the accelerator pedal is stepped on, the electric switch 21a which is interlocked at the initial stage is closed, so that the flip-flop circuit 2
0 (hereinafter, referred to as F circuit) is energized to energize the electromagnetic solenoid 19b. Therefore, the disk 12a rotates and the conical roller has the inclination angle shown in FIG. 2, and the inertia traveling mode is set as described above, and the inertia roller travels even if the accelerator pedal is returned. When the brake petal is stepped on for deceleration braking, the electric switch 21b is closed, the power source + pole 22a urges the F circuit via the AND circuit 25, and the electromagnetic solenoid 19a is energized. At this time, the accelerator pedal is returned, so the electric switch 21a is opened. Reference numeral 10 is a slip ring for energizing the rotating electromagnetic solenoids 19a and 19b from the plus pole 22a and the minus pole 22b. When the electromagnetic solenoid 19a is energized when the brake petal is stepped on, the inclination angle of the conical roller becomes opposite and the engine brake mode is changed as described above, but there is a disadvantage as described below.

If the brake pedal is stepped on during high-speed inertial running, the engine becomes slow, so that the engine brakes rapidly and shocks the vehicle body and human body. A means for eliminating such a defect will be described. When the brake petal is stepped on during high speed inertial running in the top running mode, the electric switch 21b is closed. Block circuit 2
Reference numerals 8a and 28b are detection devices for obtaining a detection signal of the traveling speed of the automobile and a detection signal of the engine speed, respectively, and well-known means are used. When the detection signal of the block circuit 28a described above is larger than the detection signal of the block circuit 28b, the output of the operational amplifier 28 becomes low level, and the AND circuit 25
The output of is also low level.

At this time, since the input of the AND circuit 26 via the inverting circuit 27 becomes high level, the AND circuit 2
The output of the output terminal 26a of 6 also becomes high level. Terminal 2
When the output of 6a is at a high level, the calibrator is operated so that the engine is accelerated, so the rotational speed of the engine rapidly increases. Therefore, when the detection signal of the block circuit 28b rises and exceeds the detection signal of the traveling speed, that is, the rotation speed of the wheels, the output of the operational amplifier 28 is converted to the high level, and the output of the AND circuit 25 also becomes the high level, so that the F circuit 20 Is also reversed and the electromagnetic solenoid 19a is energized. Therefore, the engine brake operates, but at this time, the rotational speeds of the rotating shaft 9 and the rotating shaft 7 in FIG. At this time, the inverting circuit 27
Becomes a low level, the output of the AND circuit 26 is also converted to a low level, the acceleration of the engine is stopped, and a slow rotation mode is set. Therefore, the mode is in which the engine brake is activated.

The present invention can be implemented by removing the electromagnetic solenoid 19a shown in FIG. In this case, when the electromagnetic solenoid 19b is energized, the actuator 15 is attracted by a predetermined distance, and when the energization is stopped, the actuator 15 is springed back by a predetermined distance. In the case of the device of FIG. 9, the same purpose is achieved by eliminating the electromagnetic plunger 31. It is also possible to achieve the same purpose by using, for example, a hydraulically operated device instead of an electromagnetic device. In FIG. 2, when the rotor 11 and the rotor 8 are locked, a force acts against each other so that the bearings 7a and 7b act in the directions of arrows 7d and 7c, respectively. Therefore, it is necessary to have a structure in which the rotating shafts 9 and 7 do not move due to this force. The present invention can be implemented by driving the rotating shaft 7 by the engine and driving the wheels by the rotating shaft 9. The conical rollers 13a, 13b, ... Are mounted on the rotor 11 side, but the present invention can be implemented by mounting them on the inner peripheral surface of the rotor 8.

In FIG. 7, the rotor 11 is formed as a cylinder, and the conical rollers 13a, 13b, ... Are mounted in the gap between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the rotor 8 to carry out the previous operation. It has the same effect as the example. In FIG. 8, the rotor 8 is configured as a cylinder, and the conical rollers 13a, 13b, ... Are mounted in the gap between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the rotor 8 to achieve the same operation as in the previous embodiment. The effect is obtained. In the present invention, the same effect is obtained when the rotor 11 or the rotor 8 is a cylinder or a cylinder as described above, and therefore these are called a truncated cone or a hollow truncated cone. The same effect can be obtained when the means of the present invention is applied to an electric vehicle, but in this case, a point that a regenerative braking effect is applied when the engine brake is applied is different.

[0018]

[Effect] Acceleration is accelerated by the accelerator petal, and when the accelerator pedal is returned, it is automatically converted to inertial traveling, so that fuel or electric power consumption can be greatly reduced. When the brake petal is used, the mode can be automatically switched to the engine braking mode or the regenerative braking mode, so that the braking action can be freely performed with a conventional driving feeling. In the above-mentioned operation, the one-way clutch action or the two-way clutch action is automatically changed, so that there is no worn portion and the service life is extended.

[0019]

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a configuration of an automobile in which the device of the present invention is used.

FIG. 2 is an explanatory view of a mechanism of the device of the present invention.

FIG. 3 is an explanatory view of the truncated cone 11 of FIG.

FIG. 4 is an explanatory diagram of a conical roller

5 is an explanatory view of the hollow truncated cone 8 of FIG.

FIG. 6 is a circuit diagram for controlling the energization of the disk 12a and the electromagnetic solenoids 19a and 19b.

FIG. 7 is an explanatory diagram of another embodiment of the device of the present invention.

FIG. 8 is an explanatory view of still another embodiment of the device of the present invention.

FIG. 9 is an explanatory view of another embodiment of the drive device for the disc 12a.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 engine 2 fluid clutch 3 automatic transmission 4, 4a device of the present invention 5 differential gear device 6a, 6b wheel 7, 9 rotary shaft 8 hollow truncated cone 7a, 7b bearing 12a, 12b disk 13a, 13b, ... conical roller 24a , 24b, ... Holes 15, 30a, 31a Actuators 19a, 19b Electromagnetic solenoids 30, 31 Electromagnetic plungers 10 Slip rings 20 Flip-flop circuits 28a Wheel rotational speed detection devices 28b Engine rotational speed detection devices 11 Cone cones

Claims (1)

[Claims] 1. A first rotating shaft rotatably supported by a bearing in a device for inertial running, which is interposed in a part of a torque transmitting device that travels by transmitting output torque of a motor of a vehicle to wheels. A circular truncated cone made of metal having a lower bottom center fixed to the end of the rotary shaft, a second rotary shaft rotatably supported by a bearing, and an upper bottom center at the end of the rotary shaft. Part is fixed, and a metal hollow frustum whose inner peripheral surface is held opposite to the outer circumference of the side surface of the frustum and a predetermined gap length, and a generatrix of the frustum in the space between the frustum and the hollow frustum. A plurality of elongated conical rollers which are juxtaposed while holding a predetermined slight inclination angle with respect to each other, roll in the gap, and are mounted so that the bottom surface having a large diameter is on the opening side of the hollow truncated cone. And the small diameter end of the conical roller on the outer circumference of the upper bottom surface of the truncated cone. A device for loosely fitting and holding it at a proper pitch, and a device for holding the diameter of the elongated conical roller on the outer circumference of a disk supported so as to be rotatable with respect to the first rotation shaft on the lower bottom surface side of the truncated cone. A device for loosely fitting and holding a large end at an equal pitch, and a rotation of the disc at a predetermined angle in the forward and reverse directions to control the inclination angle of the elongated conical roller with respect to the generatrix to a predetermined value. A driving device for selecting and holding a first mode for holding and a second mode for holding the same inclination angle in the opposite direction with respect to the generatrix, and converting to the first mode in the initial stage of stepping on the accelerator petal. In the initial stage of stepping on the device and brake petals,
And a means for transmitting the torque of the prime mover by either of the first and second rotating shafts and transmitting the torque to the wheels by the other of them. Inertial traveling equipment for automobiles.