JPH1030689A - Speed reduction and speed increase mechanism self-operated control type-fully automatic continuously variable transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a simple structure to continuously variably change the gear ratio by adding a mechanism to mechanically control a torque change on the input-output side by itself, and automatically controlling variable actuation by itself by a speed reduction-speed increase mechanism by self-operated driving of a sun gear. SOLUTION: A rotation input member 2, a driving gear 3, an input rotation transmitting cylinder shaft 11 and a planetary gear support frame 12 of a planetary gear 8, integrally rotate in the center of a chassis fixing shaft 1, and an output side planetary gear support frame 10 of a speed change planetary gear 4 and a control planetary gear support frame 16 of a control planetary gear 14 rotate, and a sun gear driving gear 5, a sun gear driving cylinder shaft 6 and a sun gear 7 integrally rotate. Therefore, driving control of the speed change planetary gear 4 in respective rotation areas is obtained, and the sun gear 7 is rotatably driven, and in the initial stage of input and at output side load large time, the speed reducing action is obtained, and at load reducing time, the speed increasing action is obtained, Variable driving control of torque allocation on the input-output side is performed, and speed of the sun gear 7 is reduced up to the same speed rotation area of 1 to 1 of an input member 2 and a support frame 10, and speed is increased from 1 to 1 in a speed increasing rotation area by reverse rotation driving of the sun gear 7, and an automatic continuously variable speed change is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic continuously variable transmission having three mechanisms: a speed reduction mechanism and a speed increasing mechanism, and a control mechanism for automatically controlling the two mechanisms by itself. .

[0002]

2. Description of the Related Art A conventional automatic continuously variable transmission uses a computer or the like to control the operation of locking or freeing each gear by controlling hydraulic pressure or the like. The cost, weight, and size are large and complicated. The use range is limited due to problems such as.

[0003]

A conventional automatic shifting operation is performed by a mechanically and automatically performing a deceleration mechanism and a speed-up mechanism, and a control mechanism for automatically controlling the change of the forward / reverse rotation drive thereof. With a simple structure that changes the gear ratio steplessly,
It can be used alone as a transmission, reduction gear, speed increase device, and control device.

[0004]

[Means for Solving the Problems] For this reason, Japanese Patent Application No. Hei.
In the -27250 sun gear self-reversing drive type fully automatic continuously variable transmission, means for driving the sun gear self-drive from the input side during the sun gear self-drive from the output side to obtain the reduction gear and the speed increasing mechanism to obtain the sun gear self-power. A control mechanism that mechanically controls the torque change between the output side and the input side by its own power is added to the contents of the application filed on June 22, 1996, which is configured to vary the driving speed, and the sun gear is driven by its own power. It is configured to automatically control the variable operation by the mechanism and the speed increasing mechanism by itself.

[0005] These three mechanisms are mounted on a chassis fixed shaft 1.
In this configuration, the connecting self-drive is continuously and collectively performed at the center, the rotation is input by the rotation input member 2 having the side driving gear 3 around the chassis fixed shaft 1, and the driving gear 3 and the input rotation transmission cylinder shaft 11 are input. And the planetary gear support frame 12 are integrally driven, and several control planetary gears 14 supported on the control planetary gear support frame 16 by the drive gear 3 are also provided, and the gear 15 and the output side planetary gear support frame 10 are supported. Several shifting planetary gears 4
And the internal gear 13 and the control planetary gear 14 which have the same, drive the sun gear drive gear 5, the sun gear drive cylinder shaft 6, and the sun gear 7 which mesh with several shift planetary gears 4,
The sun gear 7 and several planetary gears 8, the internal gear 9 provided in the output side planetary gear support frame 10 and several planetary gears 8 mesh with each other to drive the output side planetary gear support frame 10 at a variable speed. The control planetary gear 14 supported by the control planetary gear support frame 16 is meshed between the output side planetary gear support frame 10 and the drive gear 3, and the rotation of the variable speed planetary gear 4 is smoothly performed by the ring gear 17. By using the rotation difference between the output planetary gear support frame 10 and the rotary input member 2 due to the torque change, the control planetary gear 1 is controlled by the drive gear 3 of the rotary input member 2.
The control planetary gear support frame 16 for supporting the control planetary gear 14 is rotated and rotated about the chassis fixed shaft 1 by automatically changing the number of rotations and the direction of rotation. The direction is automatically changed, and several variable-speed planetary gears 4 meshing with the gear 15 provided on the control planetary gear support frame 16 are variably driven, so that the sun gear driving gear 5, the sun gear driving cylinder shaft 6, and the sun gear 7 are positive and negative. The planetary gear 8 meshing with the sun gear 7 drives the output-side planetary gear support frame 10 in a variable speed drive with reverse and variable drive.

[0006]

Thus, in the present invention, a driving gear 3 is provided at the center of the chassis fixed shaft 1 in order to obtain forward and reverse self-driving and control of the sun gear in each of the rotation ranges on the output side and the input side. The rotation is input by the rotation input member 2, and the input rotation transmission cylinder shaft 11 and the planetary gear support frame 12 that supports each of the several planetary gears 8 are integrally rotated so that the internal gear 9 is rotated. An output-side planetary gear support frame 10 having an internal gear 13 and the output-side planetary gear support frame 10 supports each shaft of several transmission planetary gears 4, meshes the internal gear 9 with several planetary gears 8, and has a gear 15. Each shaft of several control planetary gears 14 is supported by the control planetary gear support frame 16, and the gear 15 and several variable speed planetary gears 4 mesh with each other, and the drive gears are sandwiched by several control planetary gears 14. 3 and the internal gear 13 mesh with each other, and around the input rotation transmitting cylinder shaft 11,
Sun gear drive gear 5, sun gear drive cylinder shaft 6, sun gear 7
The sun gear drive gear 5 and several shift planetary gears 4 mesh, the sun gear 7 and several planetary gears 8 mesh, and the ring gear 17 and the shift planetary gear 4 The rotation input member 2, the drive gear 3, the input rotation transmission cylinder shaft 11, and several shafts of several planetary gears are supported at the center of the chassis fixed shaft 1 by the structure in which the meshing transmission planetary gear 4 rotates smoothly. The output-side planetary gear support frame 10 rotates while supporting the shafts of several variable-speed planetary gears 4 while integrally rotating with the planetary gear support frame 12.
The control planetary gear support frame 16 rotates while supporting each shaft of No. 4, and the sun gear drive gear 5, the sun gear drive cylinder shaft 6, and the sun gear 7 rotate integrally, and the gears engage and perform continuous driving. Thus, the drive control of the transmission planetary gear 4 in each rotation range is obtained, the sun gear 7 is variably driven, and a deceleration effect is obtained at the initial input or when the output side load is large, and a speed-up action is obtained at the time of the output side load decrease. Variable drive control of the torque distribution with the output side is performed, and the input side rotary input member 2 and the output side planetary gear support frame 10 are controlled.
A speed reduction mechanism that drives the sun gear 7 down to the same speed rotation range that is one-to-one with the sun gear 7, and obtains a speed-up mechanism by reverse rotation of the sun gear 7 in the output side speed-up rotation range from one to one. This is to obtain automatic continuously variable transmission with a gear mechanism.

[0007]

FIG. 1 is a partially cut away perspective view of a continuously variable transmission according to an embodiment of the present invention, which is partially omitted for convenience of explanation.
The sun planet gear from the drive side of No. 27250 is driven by the self-reversing drive, and the variable speed planetary gear supported on the output side planetary gear support frame of the output side rotating portion which rotates around the center of the chassis fixed shaft is inserted into the output side planetary gear support frame The control-side planetary gear is shifted between the toothed gear and the drive gear provided on the input-side rotary input member, and the control-side planetary gear support frame supporting the control-side planetary gear shaft is driven around the fixed shaft of the chassis. , Engages with the internal gear of the control planetary gear support frame and drives the sun gear by its rotational force to drive the sun gear by itself. In the load reduction region on the output side, the speed is driven by the speed increasing mechanism by the reverse rotation of the sun gear. The rotation direction of the control-side planetary gear support frame is Input rotation around each axis Rolling and driving, the Altered drive transmission to the reverse drive in the B direction, a drawing driving direction shown in conjunction of each unit, each gear ratio constituted by the intended use changes,
Since the drive configuration does not change, the figure also serves as a description of drive transmission collectively. In particular, the transmission planetary gear 10 in which the left and right gears are integrated has a speed-increasing gear ratio configuration in the figure. 1 or the drive configuration does not change even when the reduction gear ratio configuration is adopted.

1 is a chassis fixed shaft, 2 is a rotary input member,
Reference numeral 3 denotes a drive gear provided in the rotation input member 2, 4 denotes a transmission planetary gear, 5 denotes a sun gear drive gear, 6 denotes a sun gear drive cylinder shaft, 7
Is a sun gear, 8 is a planetary gear, 9 is an internal gear, 10 is an output planetary gear support frame having an internal gear 9 and an internal gear 13 and supporting each shaft of several variable planetary gears 4, 11. Is an input rotation transmission cylinder shaft, 12 is a planetary gear support frame supporting each shaft of several planetary gears 8, 13 is an internal gear, 14 is a control planetary gear, 1
5 is a gear, 16 is a gear 15 and several control planetary gears 1
Reference numeral 4 denotes a control planetary gear support frame that supports each shaft, and 17 denotes a ring gear, which is a rotation input of the rotation input member 2 in the direction A, and the rotation input member 2, the drive gear 3, the input rotation transmission cylinder shaft 11, the planetary gear support The frame 12 integrally drives the periphery of the chassis fixed shaft 1 in the direction a.
A few control planetary gears 14 meshing with the 0 internal gear 13 are driven in the direction B around the center of each planetary gear shaft.
The control planetary gear supporting frame 16 supporting each shaft is driven in a deceleration direction around the chassis fixed shaft 1 and the ring gear 17 is engaged with several variable speed planetary gears 4 meshing with the gear 15 of the control planetary gear supporting frame 16. In addition, the gears are driven in the direction A at the center of each planetary gear shaft and the rotation of several transmission planetary gears 4 is smooth (the ring gear 17 is a gear that meshes with several transmission planetary gears 4 alone to obtain a smooth rotation). There is)
Sun gear drive gear 5 meshing with several shift planetary gears 4
Are driven integrally with the sun gear drive cylinder shafts 6 and the sun gear 7 in the direction around the input rotation transmission cylinder shaft 11, and several planetary gears supported by a planetary gear support frame 12 that rotates integrally with the rotation input member 2. 8 and the sun gear 7, and several planetary gears which mesh with the internal gear 9 of the output-side planetary gear support frame 10 by the driving force of the sun gear 7 in the direction B and the driving force of the planetary gear support frame 12 in the direction A. The output planetary gear support frame 10 is driven to reduce the speed in a direction around the chassis fixed shaft 1 while the gear 8 is driven in the direction B. The rotation input member 2 and the output planetary gear support frame 10 rotate at the same speed. The deceleration drive rate of the control planetary gear support frame 16 is varied by the rotation difference between the rotation input member 2 and the output-side planetary gear support frame 10 until the rotation of the sun gear 7 is linked to the forward rotation drive. And this action is the input and output torque Get the shift effect to change the minute. This effect is obtained by configuring each of the gear ratios at which the input-side and output-side planetary gear support frames 10 are always driven to be decelerated in the input direction. be able to.

Rotation input member 2 and output side planetary gear support frame 1
In the same-speed rotation region where 0 is one-to-one, the rotation input member 2, the output side planetary gear support frame 10 and the control planetary gear support frame 16 have the same speed, and the rotary input member 2 and the output side planetary gear support frame 10 have the same speed.
When the rotation of each planetary gear shaft of the control planetary gear 13 is stopped, the drive gear 3 and the output side planetary gear support frame 10 and the control planetary gear support frame 16 are integrally driven around the chassis fixed shaft 1. The rotation speeds of the planetary gear support frame 12 and the sun gear 7 are also the same, and the sun gear 7 and several planetary gears 8 are integrally driven at the center of the chassis fixed shaft 1 while meshing with each other. Gear ratio is 1: 1 and
This is the variable speed drive end area of the output side planetary gear support frame 10 in the forward drive of the sun gear 7.

[0010] A high rotation range (reduced load) or a rotation input member in which the rotation speed of the output side planetary gear support frame 10 is higher than the same speed rotation range of the output side planetary gear support frame 10 and the input side rotary input member 2. The rotation of the output-side planetary gear support frame 10 in the direction A of the center of the chassis fixed shaft 1 at which the rotational force increases to the rotation input member 2 causes the rotation input member 2 and the output-side planetary gear support frame 10 to rotate in the opposite direction from that before the same speed rotation region. Is generated, and the driving gear 3
The control planetary gears 14 meshing with the output side planetary gear support frame 10 are driven in the direction A at the center of each planetary gear shaft, and the control planetary gear support frames 16 for supporting the respective axes of several control planetary gears 14 are provided.
The speed change planetary gear 4 which is driven faster than the rotation speed of the rotation input member 2 in the direction of the center a of the chassis fixed shaft 1 and meshes with the internal gear 13 of the output side planetary gear support frame 10 in the direction a at the center of each planetary gear shaft. The sun gear drive gear 5 that is driven and meshed with the sun gear drive cylinder shaft 6 and the sun gear 7 is integrally driven in the direction around the input rotation transmission cylinder shaft 11 to increase the speed by a self-reversal drive of the sun gear 7. Then, the output side planetary gear support frame 10
The planetary gear 8 meshing with the internal gear 9 of the first gear, and the planetary gear 8 and the sun gear 7 are meshed with each other, so that the driving force of the sun gear 7 around the input rotation transmission cylinder shaft 11 and the rotation input member 2 are integrated. With the driving force of the planetary gear support frame rotating in the direction of the center axis of the chassis fixed shaft 1, several planetary gears 8 are driven in the direction of the center axis of each planetary gear shaft, and the output side planetary gear support having the internal gear 9 meshing therewith. The frame 10 is variably accelerated in the direction of the center a of the chassis fixed shaft 1. One-to-one rotation between the input side and the output side is controlled by Sakai, and the variable forward drive and the variable reverse drive of the sun gear 7 and the change thereof are controlled by one's own power. .

As described above, according to the apparatus of the present invention, the sun gear in the conventional planetary gear mechanism or the like is controlled by its own positive and reverse stepless variable drive and its drive direction by itself, and the torque distribution is changed steplessly. The automatic continuously variable transmission is a small and lightweight fully automatic continuously variable transmission and can be used as a reduction gear and a speed increasing device in all fields.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cut-away perspective view showing a rotation direction of each gear support frame and each gear, which is partially omitted for convenience of description of an embodiment of the device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis fixed shaft 2 Rotation input member 3 Drive gear 4 Speed change planet gear 5 Sun gear drive gear 6 Sun gear drive cylinder shaft 7 Sun gear 8 Planet gear 9 Internal gear 10 Output side planet gear support frame 11 Input rotation transmission cylinder shaft 12 Planetary gear support frame 13 Internal gear 14 Control planetary gear 15 Gear 16 Control planetary gear support frame 17 Ring gear A Input forward rotation direction B Reverse rotation direction

Claims (1)

[Claims] 1. A rotation input member 2 having a chassis fixed shaft 1 at its center and a drive gear 3;
An output planetary gear having a planetary gear support frame 12 supporting each shaft of several planetary gears 8 and an internal gear 9 and an internal gear 13 and supporting each shaft of several variable planetary gears 4 Support frame 10
A control planetary gear support frame 16 having a ring gear 17, a gear 15, and supporting each axis of several control planetary gears 14,
Sun gear drive gear 5, sun gear drive cylinder shaft 6, sun gear 7
With the configuration described above, the rotation input member 2 rotates and inputs the drive gear 3, the input rotation transmission cylinder shaft 11, and the planetary gear support frame 12 integrally, and the drive gear 3 similarly controls the control planetary gear support frame 16.
, A plurality of control planetary gears 14, a plurality of gears 15, a plurality of shift planetary gears 4 supported by the output-side planetary gear support frame 10, and a plurality of internal gears 13 and control planetary gears 14. The sun gear drive gear 5, the sun gear drive cylinder shaft 6, and the sun gear 7 that mesh with and engage with the several shift planetary gears 4 drive the sun gear 7, several planetary gears 8, and the output side planet gear support frame. The internal gear 9 and several planetary gears 8 included in the gear 10 mesh with each other to drive the output-side planetary gear support frame 10 at a variable speed. The number of rotations of the control planetary gear 14 by the drive gear 3 and the change in the direction of rotation of the control planetary gear 14 are obtained.
The rotation direction is automatically controlled, and the output side planetary gear support frame 10 is speed-changed by the forward / reverse drive of the sun gear 7, and the speed reduction / speed-up mechanism is self-controlled.
Fully automatic continuously variable transmission.