JPH0650142B2 - Vehicle drive control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle drive control device in which a vehicle drive engine and an electric motor are combined.

(Prior Art) A car driven by an engine has a problem of pollution, and an electric car has a problem of battery capacity and charging time. Therefore, there is a parallel hybrid vehicle that uses a relatively low-pollution, energy-saving type engine that operates only in an efficient area, and uses the electric motor as an auxiliary, but there is a reduction mechanism for combining the engine output and the electric motor output. Is complicated.

(Object of the Invention) The present invention has a compact vehicle drive structure in which the output of an engine operating at an economical operating speed and the output of an electric motor are combined by a planetary gear mechanism built in the electric motor shaft. It is also an object of the present invention to provide a vehicle drive structure that facilitates adjustment of the electric motor output by attaching a torque meter to the propulsion shaft and that has good energy consumption efficiency.

(Example) Below, this invention is demonstrated based on the Example shown in figure.

An outline of equipment arrangement of the vehicle drive control device according to the present invention will be described with reference to Figs. This is 2 for one engine
The case where a plurality of electric motors are combined is shown.

Reference numeral 1 is an engine output shaft from an engine (not shown) operated at an economical operating speed. The engine output is transmitted from the gear 1a through the gears 3a and 3'a to the engine side input shafts 3 and 3'of the respective electric motors 2 and 2 '. Electric motor 2, 2 '
A first planetary gear mechanism and a second planetary gear mechanism, which will be described later, are built in the inside of the gear, and the electric motor output is combined with the engine output, and finally output to the electric motor side output shafts 4, 4 ', 4a, 4'a is output to the propulsion shaft 6 via the gear 5a of the torque meter 5 and is used as the driving force of the vehicle.

The internal structure of the electric motor will be described with reference to FIG. A,
B, C, D, E, F, and G are bearings, respectively. Reference numeral 3 is an engine-side input shaft, 7 is a casing of the electric motor 2, 8 is a field winding, and 9 is an armature coil mounted on a hollow armature core 10. 11 is a clutch plate made of a ferromagnetic material, and its boss portion 11a has a first planetary gear mechanism 1 which is an input shaft on the electric motor side.
The second input shaft 12a 'is spline-coupled 11a' and is normally urged by a compression spring 13. The clutch plate 11 is in pressure contact with a friction facing 3b fixed to the end of the engine-side input shaft 3. The input from the engine side is transmitted to the first planetary gear mechanism 12 side. Reference numeral 14 is an electromagnet that constitutes a braking device, and when it is excited, the compression spring 13
While overcoming the force, the clutch plate 11 is sucked and retracted to release the connection with the engine side input shaft 3, and at the same time, the friction facing 11b constituting the braking device is slidably contacted with the brake member 7a fixed to the casing 7. Power is obtained.

Reference numeral 12 is a first planetary gear mechanism, and 12 'is a second planetary gear mechanism. 12a, 12'a are sun gears, 12a, 12'a are sun gears, 12
a ', 12'a' are input shafts, 12b, 12'b are planetary gears, 12c, 1
Reference numeral 2'c is an internal gear fixed to the inner circumference of the armature core 10 and can be rotated by the rotation of the electric motor 2. 12d and 12'd are rotary support shafts, 12e and 12'e are support arms, 12e 'is an output shaft of the first planetary gear mechanism and is connected to an input shaft 12'a' of the second planetary gear mechanism, and 4 is a fourth. 2 This is an electric motor side output shaft that also serves as the output shaft of the planetary gear mechanism.

Reference numeral 10a is a partition wall / braking plate fixed to one end surface of the armature core 10, 10a 'is a friction facing, and 15 is a braking means. That is, the rotation of the armature core 10 can be completely stopped by cutting off the power supply to the electric motor 2 and operating the braking means 15. Reference numeral 9a denotes a commutator when the electric motor 2 is a DC electric motor, and 4a denotes a gear fixed to the electric motor side output shaft 4.

Next, the operation will be described.

(A) The drive engine (not shown) is operated at an economical operating speed, the clutch plate 11 is in pressure contact with the friction facing 3b and is in the operating position on the engine side input shaft 3 side, the electric power is not supplied to the electric motor 2, and the braking means 15 When the armature core 10 is stationary, the input to the engine side input shaft 3 is decelerated by the first planetary gear mechanism 12 and the second planetary gear mechanism 12 'and output to the electric motor side output shaft 4. It

(B) The drive engine is operated at an economical operating speed, the clutch plate 11 is in pressure contact with the friction facing 3b and is in the position of action on the engine side input shaft 3, the braking means 15 is released, and the electric motor 2 is supplied with electricity. When the armature core 10 is rotating in the same direction as the input shaft 12a 'of the first planetary gear mechanism 12, both planetary gears 12 are compared to when the electric motor 2 is stopped.
The rotation speed of b, 12'b becomes slower, the revolution speed becomes faster,
That is, the rotational speeds of the output shaft 12e 'and the electric motor side output shaft 4 are increased, and the output of the electric motor 3 is combined with the engine input to the engine side input shaft 3 and output to the electric motor side output shaft 4.

(C) The clutch plate 11 and the friction facing 3b are cut off and the brake member 7a is brought into pressure contact with the friction facing 11b to operate the braking device. At the same time, the braking means 15 is released and the electric motor 2 is supplied with power to supply the armature core 10 Is driven to rotate, the output shaft 4 on the electric motor side is rotationally driven only by the electric motor 2 via the two planetary gear mechanisms 12, 12 '.

Next, a torque meter equipped at one end of the propulsion shaft 6 for adjusting the electric motor output in accordance with the required torque on the wheel side will be described with reference to FIG.

Reference numeral 20 denotes an input side frame, and the input side frame 20 is configured by fitting and fixing an inner frame 22 to an outer frame 21 formed by integrating a relatively long cylindrical tail portion 21a and a tubular portion 21b. The inner frame 22 is formed in a double cylindrical shape by a tubular portion 22a having an opening 22a 'and a boss portion 22b provided upright in the central portion. A gear 4 fixed to the electric motor side output shaft 4 is provided on the outer circumference of the opening side end of the outer frame 21.
A gear 5a that meshes with a is formed. Reference numeral 23 denotes an output side frame, which is a cylindrical portion 23a having an annular opening 23a 'at one end.
And a bottomed cylindrical portion 23b having a long projection 23b 'in the central portion, and the annular opening 23a' at one end thereof is arranged so as to face the opening 22a 'of the inner frame. The inner peripheral surface of 23b ′ is spline-coupled 23b ″ with the outer peripheral surface of the boss portion 22b of the inner frame by allowing some mutual rotation, and the outer peripheral surface is between the inner peripheral surface of the cylindrical portion 22a of the inner frame. Mutual rotation is allowed by interposing a bearing H. The opening 23b 'and the boss 22b are formed as a spline connection 23b "for the sake of safety when the torsion bar 24 is broken. 24 is a relatively long torsion bar, one end of which is 24
a is splined to the bottom of the cylindrical portion 23b of the output side frame by taper coupling 24a ', inserted loosely in the boss portion 22b and the tail portion 21a of the inner frame, and the other end 24b is tapered with the inner peripheral surface of the end portion of the tail portion 21a. Are splined together at 24b '. The end of the tail portion 21a is rotatably supported by a member attached to the casing 7 of the electric motor, which is an external fixed portion. Therefore, the torque from the electric motor side output shaft 4 is transmitted to the propulsion shaft 6 through the output side frame 23 from the other end 24b of the torsion rod via the gears 4a and 5a which are transmission devices. Then, the torsion bar 24 is twisted due to the difference between the torque applied to the other end 24b of the torsion bar and the torque as the resistance from the wheel side, and the torsion bar 24 is twisted to form the opening 22a 'of the inner frame and the annular opening 23a of the output side frame. A deviation in the circumferential direction is caused between ′ and ′.

One means for detecting the above deviation electromagnetically and in a non-contact state will be described.

Reference numeral 25 is an inner magnet fixed in the opening 22a 'of the inner frame, and 26 is an outer magnet fixed in the annular opening 23a' of the output frame. The polarities are different. Reference numeral 27 is a coil which is arranged between both magnets 25 and 26 and is fixed to the outside regardless of the relative movement between the inner frame 22 and the output side frame 23.

Then, the two magnets 25 and 26 have two openings 22a 'and 23a', respectively.
Are arranged alternately in the circumferential direction of the magnet 27, and the winding of the coil 27 is also wound in the opposite direction according to the polarities of the opposing magnets 25 and 26, so that the relative movement of both magnets 25 and 26 groups. The induced currents that are generated are added together.

Therefore, the twist of the torsion bar 24 caused by the difference between the output of the electric motor side output shaft 4 and the wheel side load torque is taken out as an electric signal, and the electric signal which is this torque signal is used as a control signal of the electric motor 2. By adjusting the output of the electric motor 2, economical and stable operation of the vehicle is achieved.

Then, a plurality of small electric motors having the above-described structure can be arranged around the output shaft of the drive engine, and the output of the electric motor can be combined with the output of the drive engine to be the output of the propulsion shaft.

The electric motor is not limited to the DC electric motor.

(Structure of the Invention) A vehicle drive control device according to the present invention fixes an internal gear of a planetary gear mechanism to an inner circumference of an armature core provided with a control means of an electric motor, and uses a shaft of a sun gear as an electric motor side input shaft. , The input shaft of the drive engine can be connected via a clutch equipped with a braking device for braking the input shaft when not connected, and the output shaft is connected to the support arm of the planetary gear mechanism to input the output shaft and the torque meter. A vehicle drive control device in which side frames are connected by a transmission device, wherein the torque meter is formed by connecting an input side frame and an output side frame connected to a propulsion shaft for obtaining a vehicle drive output with a torsion bar. The vehicle drive control device uses a torque signal obtained by electromagnetically detecting a twist between the input side frame and the output side frame as a control signal of the electric motor.

(Advantages of the Invention) (a) By providing the planetary gear mechanism in the armature core, the speed reducer for decelerating the output of the electric motor to the output of the drive engine to make it compact is compact. Moreover, the external influence of the noise generated from the planetary gear mechanism can be reduced.

(B) If necessary, a plurality of small electric motors can be easily arranged around the output shaft of the drive engine.

(C) The torque of the propulsion shaft can be easily adjusted by adjusting the output of the electric motor.

(D) The electric motor is a direct-current motor, and the electric signal from the torque meter is introduced into the controller for automatic shift operation of the vehicle.

(E) The rotational drive state of the propulsion shaft can be reliably obtained by the three modes. That is, (1). The clutch is connected to release the braking device, and at the same time the braking means is activated, the propulsion shaft is rotationally driven only by the drive engine. (2). The clutch is connected to release the braking device. With the braking means released, the propulsion shaft is driven to rotate by the drive engine and the electric motor. (3) The clutch is cut to operate the braking device, and the braking means is released. Rotational drive of the propulsion shaft can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a device arrangement showing an embodiment of a vehicle drive control device according to the present invention, FIG. 2 is a front view from the same engine side, and FIG. 3 is a sectional view of an electric motor according to the present invention. FIG. 4 is a sectional view of the torque meter. 1: engine output shaft, 2, 2 ': electric motor, 3, 3': engine side input shaft, 3b: friction facing (clutch), 4, 4 ': electric motor side output shaft (output shaft), 4a,
4'a: Gear (transmission device), 5: Torque meter, 5a:
Gear (transmission device), 6: Propulsion shaft, 7: Casing, 7
a: brake member (braking device), 8: field winding, 9: armature coil, 10: armature iron core, 10a: partition wall / braking plate, 11: clutch plate (clutch), 11a ': spline connection, 11b: Friction facing (braking device), 12:
First planetary gear mechanism, 12 ': Second planetary gear mechanism, 12a, 1
2'a: sun gear, 12a ', 12'a': input shaft (motor side), 12b, 12'b: planetary gear, 12c, 12'c: internal gear, 12
d, 12'd: rotation support shaft, 12e, 12'e: support arm, 12e ': output shaft, 13: compression spring, 14: electromagnet, 15: braking means, 20: input side frame, 21: outer frame, 21a: tail portion, 21b: tubular portion, 22: inner frame, 22a: tubular portion, 22a ': opening portion, 2
3: Output side frame, 23a: Cylindrical part, 23a ': Annular opening, 23
b: tubular portion, 23b ': opening, 23b ": spline connection,
24: torsion bar, 25: inner magnet, 26: outer magnet, 2
7: coil

Claims (1)

[Claims] Claim: What is claimed is: 1. An internal gear of a planetary gear mechanism is fixed to the inner circumference of an armature core provided with a braking means for an electric motor, and the sun gear shaft serves as an input shaft on the electric motor side. When the input shaft is not connected, braking operation is performed. It is possible to connect to the input shaft on the drive engine side via a clutch equipped with a braking device, connect the output shaft to the support arm of the planetary gear mechanism, and connect the output shaft and the input side frame of the torque meter by a transmission device. In the connected vehicle drive control device, the torque meter comprises an input side frame and an output side frame connected to a propulsion shaft for obtaining a vehicle drive output, which are connected by a torsion bar, and the input side frame and the output side frame are connected. A vehicle drive control device, wherein a torque signal obtained by electromagnetically detecting a twist between the two is used as a control signal for the electric motor.