JPH1030690A - Speed reduction and speed increase and control mechanism 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 smoothly control a torque change on the input-output side by itself, and automatically changing speed by a speed reduction-speed increase self-operated control mechanism by self-operated driving of a sun gear. SOLUTION: An input rotation transmitting cylinder shaft 11 and a planetary gear support frame 12 are integrally turned in the center of a chassis fixing shaft 1, and a speed change planetary gear 4 and a driving gear 3, an internal gear 9, an internal gear 13 and the speed change planetary gear 4, a sun gear driving gear 5, a sun gear driving cylinder shaft 6 and the speed change planetary gear 4, a planetary gear 8 and a sun gear 7, and the internal gear 9 and the planetary gear 8 are respectively meshed with each other, and rotation is inputted by a rotation input member 2 having the driving gear 3. Therefore, variable speed reduction driving of the same speed rotation area of the input member 2 and a ring gear 10 to obtain 1 to 1 of torque allocation on the input-output side, can be variably controlled by a speed reduction mechanism by self-operated normal rotation driving of the sun gear 7, and variable speed increasing driving can be variably controlled by a speed increasing mechanism by self-operated reverse rotation driving of the sun gear 7, and the torque allocation on the input-output side can be steplessly and variably controlled by itself.

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 reverse drive fully automatic continuously variable transmission, the sun gear self-drive from the input side is obtained by means of the sun gear self-drive from the output side while the sun gear self-drive from the output side. Added a function to smoothly control the torque change between the output and the input side with a simple configuration and added the function of self-driving the sun gear to the content of the patent application filed on June 22, 08 In addition, the automatic transmission is configured with a speed increasing mechanism and a self-control mechanism.

[0005] These three mechanisms are mounted on a chassis fixed shaft 1.
The rotation input member 2 having the drive gear 3 around the chassis fixed shaft 1, the input rotation transmission cylinder shaft 11, and the planetary gear support frame 12 are integrally formed. The transmission planetary gear support frame is engaged with the drive gear 3 and several transmission planetary gears 4 supported by the transmission planetary gear support frame 14, and several transmission planetary gears 4 and the sun gear drive gear 5 are engaged. 14 is a sun gear drive cylinder shaft 6
, The sun gear driving gear 5, the sun gear driving cylinder shaft 6, and the sun gear 7 are integrally rotated around the input rotation transmission cylinder shaft 11, and are supported by the sun gear 7 and the planetary gear support frame 12. And the internal gear 9 of the output side ring gear 10 meshed with the internal gear 13 of the output side ring gear 10 and the variable speed planetary gear 4.
The rotation input member having the drive gear 3 centered on the chassis fixed shaft 1 by having a structure in which several transmission planetary gears 4 mesh between the drive gear 3 of the rotation input member 2 and the internal gear 13 of the output ring gear 10. 2, the output side ring gear 10 is decelerated and driven, and the drive gear 3 is rotated around the center of each gear shaft of several variable speed idler gears 4 by the rotation difference between the rotation input member 2 and the output side ring gear 10. The number of rotations changes, and the speed at which the rotation planetary gear support frame 10 pulls around the sun gear drive cylinder shaft 6 due to the rotation of the rotation input member 2 and the output side ring gear 10 changes. The sun gear drive gear 5 meshes with the change in the number of rotations around the shaft center.
Has a function of changing the speed (the number of rotations) of turning while pulling around the input rotation transmission cylinder shaft 11, and variably drives the sun gear 7 integrated with the sun gear driving gear 5.

[0006]

Thus, in the present invention, in order to obtain forward and reverse rotation self-drive and control of the sun gear in each of the output side and input side rotation ranges, the input rotation transmitting cylinder shaft is centered on the chassis fixed shaft 1. 11 and a planetary gear support frame 12 supporting the shafts of several planetary gears 8 so as to rotate together, supporting the shafts of several transmission planetary gears 4 and supporting the sun gear driving cylinder shaft 6. An output side ring gear 10 having an internal gear 9 and an internal gear 13 that engages with several transmission planetary gears 4 and a drive gear 3 of a transmission planetary gear support frame 14 orbiting around the chassis fixed shaft 1.
Meshes with the internal gear 13 and several speed-change planetary gears 4,
The sun gear drive gear 5, the sun gear drive cylinder shaft 6, the sun gear drive gear 5 of the sun gear 7, and several shift planetary gears 4 that integrally rotate around the input rotation transmission cylinder shaft 11 mesh with several shift planetary gears 4 and several planets. Several planetary gears 8 of a planetary gear support frame 12 that support each shaft of the gear 8 and rotate integrally with the rotary input member 2 about the chassis fixed shaft 1 mesh with the sun gear 7 and the internal teeth of the output side ring gear 10. The gear 9 meshes with the planetary gear 8, the rotation is input by the rotation input member 2 having the driving gear 3, and the torque is distributed between the input side and the output side by the continuous rotating means while the respective gears mesh with each other at the center of the chassis fixed shaft 1. Variable deceleration drive of the rotation input member 2 and the output side ring gear 10 in the same speed rotation range to obtain one-to-one is a reduction mechanism by self-rotational driving of the sun gear 7, and variable speed-up driving is self-reversal rotation driving of the sun gear 7. Speed increase mechanism by the input side The output-side torque distribution is variably controlled by itself in a stepless manner, and the gear ratios of the gears are always set such that the output side ring gear 10 rotates in the rotation input direction with respect to the rotation of the rotation input member 2 at the initial stage of the rotation input. In particular, the transmission planetary gear 4 having a structure in which the left and right gears are integrated with each other has a speed increasing gear ratio configuration or a one-to-one ratio depending on the purpose of use.
Alternatively, a reduction gear ratio configuration may be adopted, and the gear ratio of each gear also changes depending on the purpose of use.

[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.
No. 27250, a sun gear from the driving side, a means for self-reversing driving, an internal gear provided on the output side ring gear of the output side rotating part rotating about the fixed shaft of the chassis, and a driving gear provided on the input side rotating input member. Between the transmission planetary gear and the transmission planetary gear support frame, rotating around the fixed axis of the chassis, meshing with the sun gear drive gear integrated with the sun gear and the transmission planetary gear. The drive and its variable control are performed. The rotation of the control-side planetary gear support frame rotates in the same direction as the input and output sides. The figure also shows the driving direction of each part in the drive transmission that is changed to the reverse drive in the drive direction and the reverse direction. The gear ratio configuration changes according to the purpose of use, but the drive configuration does not change. Indicates drive transmission direction In particular, the transmission planetary gear 4 in which the left and right gears are integrally formed has a speed-increasing gear ratio configuration, a one-to-one or a reduction gear ratio configuration depending on the purpose of use. In some cases, the gear ratio of each gear also changes depending on the purpose of use.

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 ring gear having an internal gear 9 and an internal gear 13, 11
Is an input rotation transmitting cylinder shaft, 12 is a planetary gear support frame supporting each of several planetary gears 8, 13 is an internal gear, 14 is a variable speed planetary gear that supports several axes of several variable speed planetary gears 4. The rotation input member 2, the drive gear 3, the input rotation transmission cylinder shaft 11, and the planetary gear support frame 12 are integrally formed as a support frame. 1, the driving planetary gears 4 are driven in the direction B by the driving gear 3 and several shifting planetary gears 4 meshing with the internal gear 13 of the output side ring gear are driven in the direction B at the center of each gear shaft.
The planetary gear support frame 14 for supporting the gears is driven in the direction A around the sun gear drive cylinder shaft 6 rotating around the input rotation transmission cylinder shaft 11 rotating around the chassis fixed shaft 1, and the speed is changed by both driving forces. The sun gear drive gear 5 meshing with the planetary gear 4 is turned while pulling the circumference of the input rotation transmission cylinder shaft 11 in the direction A, and the sun gear drive cylinder shaft 6 and the sun gear 7 integrated with the sun gear drive gear 5 are moved into the input rotation transmission cylinder. The planetary gear 8 is driven in a direction around the shaft 11 and rotates together with the rotary input member 2 in the direction around the chassis fixed shaft 1. Gear support frame 1
The two planetary gears 8 meshing with the internal gear 9 of the output side ring gear 10 are driven in the direction B by the driving force in the direction A of 2 and the driving force in the direction B of the sun gear 7, and the output side ring gear 10 is fixed to the chassis. The variable speed drive is performed in the direction a around the shaft 1, and the variable speed drive of the sun gear 7 is performed until the rotational speed of the rotary input member 2 and the output side ring gear 10 reaches the same speed range, thereby obtaining the speed change effect by the speed reduction mechanism.

In the same speed rotation region in which the rotation input member 2 and the output side ring gear 10 are in a one-to-one correspondence, the rotation input member 2, the output side ring gear 10 and the variable speed planetary gear support frame 14 have the same speed. The rotation difference of the output-side planetary gear support frame 10 disappears, the rotation of each shaft of the transmission planetary gear 4 supported by the transmission planetary gear support frame 14 stops, and the action of the sun gear drive gear 5 meshing with the transmission planetary gear 4 by this action. When the driving is stopped and the driving of the sun gear 7 integral with the sun gear driving gear 5 is stopped, the driving of the center of each axis of the several planetary gears 8 is stopped, and the gears are engaged with each other at the center of the chassis fixed shaft 1. The gears rotate in the direction a as a unit, and have a gear ratio of 1: 1 between the input side and the output side.

The rotation speed of the output ring gear 10 is higher than the rotation speed of the output side ring gear 10 and the input side rotation input member 2 in the high rotation range (reduced load), or the rotational force to the rotation input member 2 is reduced. As the rotation increases, the rotation of the output side ring gear 10 in the direction a from the rotation input member 2 is increased, so that the meshing transmission planetary gear 4 is driven in the direction a around the center of each shaft to support each shaft of several transmission planetary gears 4. The driving planetary gear support frame 14 starts to be driven in the direction of the periphery of the sun gear driving cylinder shaft 6. By this action, the meshing sun gear driving gear 5 is driven in the direction of the peripheral opening of the input rotation transmission cylinder shaft 11 to perform the input rotation. The transmission gear shaft 11 is rotated by being pulled in the circumferential direction of the transmission cylinder shaft 11. Depending on each gear ratio configuration, the opposing actions of both cause the sun gear drive gear 5 to transmit the input rotation transmission to the extent that the speed increase ratio of the transmission planetary gear 4 is high. The sun gear driving cylinder shaft 6 and the sun gear 7 are driven in the direction B around the cylindrical shaft 11 to drive the sun gear driving gear 5 in the direction A and the operation to drive the sun gear driving gear 5 in the direction B. The sun gear drive gear 5 is driven in the direction B until the rotation range is the same as that of the chassis fixed shaft 1 by the self-reversal drive of the integral sun gear 7.
The driving force of the planetary gear support frame rotating in the direction of the center A drives several planetary gears 8 in the direction of the center of each shaft, and the output side ring gear 10 having the internal gear 9 meshed with the center of the chassis fixed shaft 1. The speed increase is variable in the direction, but the speed increase width is reduced by the driving of the opposing sun gear drive gears 5, and the speed increase action is eventually stopped.

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.

[Description of Signs] 1 Chassis fixed shaft 2 Rotation input member 3 Drive gear 4 Variable planetary gear 5 Sun gear drive gear 6 Sun gear drive cylinder shaft 7 Sun gear 8 Planet gear 9 Internal gear 10 Output ring gear 11 Input rotation transmission cylinder Shaft 12 Planetary gear support frame 13 Internal gear 14 Variable speed planetary gear support frame 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;
A planetary gear support frame 12 supporting the shafts of several planetary gears 8, an output side ring gear 10 having an internal gear 9 and an internal gear 13, and each shaft of several variable planetary gears 4. , A sun gear drive gear 5, a sun gear drive cylinder shaft 6, and a sun gear 7, the drive gear 3, the input rotation transmission cylinder shaft 11, the planetary gear The support frame 12 is integrally driven with the chassis fixed shaft 1 as a center,
Several transmission planetary gears 4 supported on the transmission planetary gear support frame 14 by the drive gear 3 mesh with the internal gear 13 of the output side ring gear 10 and the sun gear drive gear 5, and the sun gear drive cylinder shaft 6, the sun gear The gear 7 is driven to mesh with the sun gear 7 and several planetary gears 8 and the internal gear 9 of the output side ring gear 10, and the speed of the output side ring gear 10 is also driven around the chassis fixed shaft 1. By the rotation difference between the side ring gear 10 and the rotation input member 2, a variable drive of the transmission planetary gear 4 meshing between the drive gear 3 of the rotation input member 2 and the output side ring gear 10 is obtained, and meshes with the transmission planetary gear 4. The sun gear drive gear 5, the sun gear drive cylinder shaft 6, and the sun gear 7 are integrally changed and the number of rotations and the direction are automatically changed about the chassis fixed shaft 1, and the sun gear 7 is variably controlled to reduce and increase the speed. Deceleration, acceleration, control Obtain the characteristics of the structure, the planetary gear support frame 12
A variable speed drive of the output side ring gear 10 meshing with the planetary gear 8 to drive the planetary gear 8 variably with the driving force of the above.