JPS5854303B2 - Planetary gear type transmission mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a planetary gear type transmission mechanism used between two rotating inertia bodies.

When using a flywheel for energy storage in a vehicle etc. from the perspective of energy saving, the transmission mechanism connecting two rotating inertial bodies, the flywheel and the wheels, transfers the mechanical energy of one rotating inertial body to a fluid or From the point of view of efficiency, it is advantageous to transmit gear changes as mechanical energy without converting it into electrical energy.

The object of the present invention is to configure a speed change mechanism for use between such rotating inertial bodies so that it can efficiently and steplessly change speed with a simple mechanism using a planetary gear mechanism. A sun gear to be connected to an inertial body, a planetary gear that meshes with the sun gear, and a carrier rotatably supporting the planetary gear to be connected to the other rotating inertial body, and a carrier that is attached to the shaft of the planetary gear. In addition to installing a balanced mass, a generator/motor is provided between the carrier and the shaft of the planetary gear or the shaft of the sun gear to apply torque to the meshing point of both gears, and the unbalanced mass is attached to the generator/motor. The device is characterized in that it is equipped with a switch mechanism that is activated when the device is on either side of the plane that includes the carrier and the axis of the planetary gear.

To explain the present invention in more detail with reference to the drawings, the first
The figure schematically shows an embodiment of a planetary gear type transmission mechanism according to the present invention, in which two rotational inertia bodies 2 and 3 are connected by the planetary gear type transmission mechanism 1.

The rotating inertial bodies 2 and 3 can be considered, for example, as an energy storage flywheel in a vehicle and a vehicle equivalent inertial body.

The planetary gear type transmission mechanism 1 includes a sun gear 5 provided on a sun shaft 4 connected to a rotating inertial body 3, and a carrier 7 provided on a carrier shaft 6 connected to the rotating inertial body 2.
A rotating shaft of a generator/electric motor 80 provided in the above is connected to a planetary shaft 10 of a planetary gear 9 that meshes with the sun gear 5, and an unbalanced mass 11 is attached to the planetary shaft 10.

Incidentally, instead of the sun gear 5, an internally toothed sun gear 5a as shown by a chain line can also be used.

In the planetary gear type transmission mechanism having the above configuration, if any of the rotational inertia bodies has a rotational speed other than O, the planetary shaft 10 is rotatably supported by the carrier 7 in that part without providing the generator/motor 8. Assuming that,
As shown in FIG. 2, the unbalanced mass 11 has a centrifugal force IF generated when it rotates around the planetary axis
, and the centrifugal force Fs generated by rotation around the sun axis 4 act on the planetary gear 9, and the meshing of the planetary gear 9 and the sun gear 5 counteracts these centrifugal forces by balancing the force and couple on the planetary gear 9. A drag force is generated at the point and the planetary gear support point (axis center), and as a result, torque is generated on the sun shaft 4 and the carrier shaft 6, and the direction of this torque reverses during one rotation of the unbalanced mass 11. do.

Therefore, the rotational speeds θC and θS of both rotating inertia bodies 2 and 3 are
changes in a pulsating manner as shown by the dotted line in FIG. 3, and cannot be changed steadily.

Note that FIG. 3 is an example in which the starting point is a case where the rotating inertial body 2 rotates at a high speed and the rotational speed of the rotating inertial body 30 is O.

Therefore, the generator/motor 8 is provided, and in the region (T1) where the torque accelerates the rotational speed SS of the rotating inertial body 30, the generator/motor 8 is inactive, and in the region (T2) where the rotational speed θS is decelerated. In, generator/motor 8
By the operation of fh &
f As shown by the solid line in Fig. 3, the rotational speed δS of the rotating inertial body 30 no longer decelerates, the rotational speed of the rotating inertial body 20 decreases slightly, and overall the rotational speed θS of the rotating inertial body 30 gradually decreases. As the rotational speed θC of the rotating inertia body 2 increases, the rotational speed θC of the rotating inertial body 2 gradually decreases.

Therefore, the generator/motor 8 is equipped with a switch that operates the generator/motor 8 according to the above-mentioned method, that is, when the unbalanced mass 11 is on either side of the plane containing the carrier shaft 6 and the planetary shaft 10. It is necessary to add a mechanism.

In the generator/electric motor, when an output torque is applied, a counter torque is applied to the carrier 7, that is, the rotating inertial body 2, so that mechanical power is transmitted between the rotating inertial body 2 and the rotating inertial body 30.

At that time, part of the transmitted power becomes electrical.

This type of generator/motor acts as a motor when the output shaft speed is higher than the input shaft speed when viewed from the generator/motor, and acts as a generator when the output shaft speed is smaller than the input shaft speed.

FIG. 4 shows another embodiment of the present invention, in which a planetary shaft 10 of a planetary gear 9 meshing with a sun gear 5 is fixedly and rotatably supported by a carrier I, and this planetary shaft 10 has an unbalanced mass. 11
A generator/electric motor 8 is installed on the carrier shaft 6, and its rotating shaft is connected to the sun shaft 4.

This generator/motor 8 is also operated in the same manner as in the above embodiment, so that the rotational speed of the rotary inertial body 30 gradually increases and the rotational speed of the rotary inertial body 20 gradually decreases.

As described above, according to the present invention, the rotational speeds of the two rotating inertial bodies can be varied steplessly with a simple configuration using a planetary gear mechanism.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of a transmission mechanism according to the present invention;
FIG. 2 is an explanatory diagram of its operation, FIG. 3 is an explanatory diagram of changes in velocity of two inertial bodies, and FIG. 4 is a configuration diagram of another embodiment of the present invention. 1... Planetary gear type transmission mechanism, 2, 3...
・Rotating inertial body, 4...Sun axis, 5...
Sun gear, 7...Carrier, 8...Generation/motor, 9...Planetary gear, 10...
・Planet axis, 11...Unbalanced mass.

Claims (1)

[Claims] 1 A sun gear to be connected to one rotating inertial body, a planetary gear meshing with the sun gear, and a carrier rotatably supporting the planetary gear to be connected to the other rotating inertial body, the planetary gear An unbalanced mass is attached to the shaft of the carrier, and a generator/motor is installed between the carrier and the axis of the planetary gear or the sun gear to apply torque to the meshing point of both gears. A planetary gear type transmission mechanism, characterized in that it is equipped with a switch mechanism that is activated when the unbalanced mass is on either side of a plane that includes the carrier and the axis of the planetary gear.