JP2002139108A - Two-set sun gear self-operated reverse drive type self- operated continuously variable transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish each continuous and self-operated shift action in each output speed range only with a drive structure with three sets of planetary gears and without oil pressure, a controller and the like. SOLUTION: A two-set sun gear self-operated reverse drive type self-operated continuously variable transmission uses a drive structure with three sets of planetary gears, in which a first set provides speed increasing drive, a second set provides speed reducing drive and a third set provides differential drive. Sun gears 6 of two respective planetary gear sets are simultaneously driven in an output-opposite direction by an output rotary plate 12, and a support frame 1 of the first planetary gear set and a ring gear 4 of the second planetary gear set are simultaneously provided with input in the same direction, so that a ring gear 3 of the first planetary gear set drives a support frame 8 of the third planetary gear set and a support frame 7 of the second planetary gear set drives a sun gear 10 of the third planetary gear set to provide variable drive of a ring gear 11 of the third planetary gear set, and that the ring gear 11 drives the output rotary plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission that inputs a rotation value on an output side to a planetary gear and obtains a stepless variable by itself.

[0002]

2. Description of the Related Art In a conventional planetary gear transmission, a step-by-step gear shift is obtained by the effect of locking gears by hydraulic pressure or the like and free rotation stop effect.

[0003]

The conventional transmission has a problem that requires a hydraulic pressure and a control device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for performing a stepless speed change by itself according to each rotation on the output side, omitting a device or a control device for locking or freeing each gear.

[0005]

In order to achieve the above object, two sets of planetary gears are arranged on the left and right sides of the central shaft to integrate the respective sun gears. The sun gear self-reversing drive from the output side in the sun gear self-reversing drive type fully automatic continuously variable transmission and the "Sun gear self-reversing drive self-automatic automatic speed reducer" disclosed in JP-A-11-171451 are simultaneously and simultaneously driven in the same direction. It can be done by doing.

[0006] The two sets of planetary gears are arranged on the left and right of the central axis, so that the second set of ring gears is directly supported on the support frame of the first set of planetary gears (or has a one-way mechanism). In this way, simultaneous input in the same direction to both the support frame of the first set of planetary gears and the second set of ring gears is attempted.

[0007] The ring gear of the first planetary gear is used to drive the connection of the support frame of the third planetary gear.

[0008] The sun gear of the third set of planetary gears is connected and driven by the support frame of the second set of planetary gears.

[0009] The ring gear of the third planetary gear is used to drive the connection of the output side rotating plate.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings based on embodiments. In FIG.
6, the pinion gear 2, the ring gear 3, and the planetary gear of the support frame 1 meshing with the sun gear 6;
The pinion gear 5, the ring gear 4 and the planetary gears of the support frame 7 are arranged on the left and right, and the support frame 1 supporting the gear shaft 13 of the pinion gear 2 and the ring gear 4 are integrated (in FIG. , An arrow input direction rotating one-way mechanism may be provided), and the input shaft is supported by a gear shaft 13 of the pinion gear 2 and supported by an input-side rotating plate (via a belt 18). 1 and the ring gear 4 are simultaneously input in the direction of the arrow (or may be input via a one-way mechanism), and the ring gear 3 is rotated in the direction of the arrow by the revolving drive of the support frame 1 in the direction of the input of the pinion gear 2 and the sun gear 6 in the direction of the arrow. , The supporting frame 8, the sun gear 10, the pinion gear 9, and the supporting frame 8 of the third planetary gear set including the ring gear 11 (via the belt 20). The ring gear 4 is driven simultaneously in the arrow direction integrally with the support frame 1 (or has a one-way mechanism), and the pinion gear 2 is driven to revolve in the input direction via the arrow input reverse rotation of the sun gear 6. Then, the supporting frame 7 is decelerated from the input to drive the sun gear 10 (via the belt 21) of the third set of planetary gears in the direction indicated by the arrow (the sun gear 10 is accelerated from the supporting frame 7). By the deceleration drive of the sun gear 10 of the third set of planetary gears in the direction of the arrow input and the revolving drive of the pinion gear 9 of the support frame 8 in the direction of the arrow input, rotation of the pinion gear 9 in the direction opposite to the direction of the arrow acts on the pinion gear 9 to engage with the ring gear. 11 is a variable drive (via the belt 22) from a drive in which the drive speed in the input direction is considerably slow (a drive in which the drive speed is reduced from the input by the differential action) to a one-to-one drive. Te output rotary plate 1
2 and two sets of planetary gears sun gear 6 (via belt 19) at output side rotating plate 12
Is driven in the direction opposite to the input direction of the arrow on the output side rotary plate 12, and the one-way mechanism in each part between the input and output in the figure is omitted for convenience of explanation.

[0011]

Since the present invention is configured as described above, it has the following effects.

According to this configuration, the two sets of planetary gears are arranged on the left and right sides of the center axis, so that the support frame of the first set of planetary gears and the second set of ring gears can be collectively input to achieve the first set. With the planetary gears, ring gear drive by the speed increasing mechanism, and with the second set of planetary gears, the support frame drive by the speed reduction mechanism, and output effects that conflict with each other are obtained.

[0013] Two sets of planetary gears are arranged on the left and right sides of the center shaft, and the sun gears are integrated with each other.
Both the first and second sets of sun gears from the output rotary plate can be driven collectively in the direction opposite to the input from the output rotary plate.

Then, on the first set of planetary gears,
Sun gear output reverse drive in each rotation range of output side rotation plate,
The support frame input means for the pinion gear is obtained, and the drive speed of the ring gear via the pinion gear and the sun gear is increased in proportion to the output rotation value, and the support frame of the third set of planetary gears to be connected and driven is input. A variable drive that increases the speed of rotation in the direction can be obtained.

Then, on the second set of planetary gears,
Sun gear output reverse drive in each rotation range of output side rotation plate,
By obtaining the ring gear input means, the revolving drive speed of the meshing pinion gear is reduced in proportion to the output rotation value.
The speed of rotating the sun gear of the third set of planetary gears (driven by increasing the sun gear higher than the rotation speed of the support frame) in the input direction by reducing the drive speed of the support frame of the pinion gear and connecting and driving is reduced. Variable drive can be obtained.

[0016] Thus, a variable drive in which the speed of rotation of the third planetary gear in the input direction of the sun gear is reduced and a variable drive in which the speed of rotation of the support frame in the input direction is increased are provided. The ring gear that meshes with the pinion gear of the support frame can be variably driven in the input direction by the differential action of the differential drive. The input direction drive speed is input at the number of rotations that is caused by the rotational inertia of the rotary plate in each rotation range on the output side. By applying input torque to sun gear rotation driven in the opposite direction,
The ability to automatically change the drive speed of the support frame and the drive speed of the deceleration of the sun gear via each gear by itself is obtained.
The output side rotary plate has the function of steplessly changing by itself up to the one-to-one distance (the gear ratio is limited by the input-output force relationship) reaching the high rotation range. Can be driven.

[0017] The effect described in the above configuration is achieved by a prototype machine in which two sets of planetary gears are driven in the reverse direction by the sun gear input only by the rotational inertia force of the rotary plate without load on the output rotary plate. In order to obtain a smooth rotation of the output side rotating plate in the input OFF state,
It was obtained by a drive configuration with a one-way mechanism between outputs.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a partial cross section of two sets of sun gear self-reversing drive type and self-powered continuously variable transmissions of the present invention, in which the rotation directions of respective parts are indicated by arrows.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support frame 2 Pinion gear 3 Sun gear 4 Ring gear 5 Pinion gear 6 Sun gear 7, 8 Support frame 9 Pinion gear 10 Sun gear 11 Ring gear 12 Output side rotating plate 13 Pinion gear shaft 14 Internal teeth 15 Input side rotating plate 16, 17 Center shaft 18, 19, 20,21,22 belt

Claims (1)

[Claims] 1. A three-planetary gear drive configuration in which the first set is driven at an increased speed, the second set is decelerated and the third set is differentially driven to obtain a shift, and two sets of planetary gears are provided. The output side rotating plate (12) of each sun gear (6) of the gears simultaneously drives the output in the reverse direction, and the first set of planetary gears (1, 2, 3, 3).
6) and the second set of planetary gears (4, 4)
5, 7 and 6) simultaneously input the ring gear (4) in the same direction, and use the ring gear (3) of the first planetary gear to support the frame (8, 9, 10, 11) of the third set of planetary gears (8, 9, 10, 11). 8), the sun gear (10) of the third set of planetary gears is driven by the support frame (7) of the second set of planetary gears,
The third set of planetary gears is characterized by variable driving of the ring gear (11), and the two sets of sun gears are driven by the ring gear (11) to rotate the output rotary plate (12). Transmission.