JP2000170853A - Self-operated full automatic continuously variable transmission by connection driving of two sets of planatory gears and bevel gears - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the input value in an output side angular rotational zone by self-operation by fixing a sun gear to be engaged with a specific number of sets of planatory gears to a chassis, and reductiondriving the sun gear engaged with the specific number of sets of planatory gears in the input reverse direction by the output torque. SOLUTION: A sun gear 12 to be engaged with a set of two planatory gears where a set of planatory gears are formed by a shift pinion gear 3 of and a pinion gear 4 of a large and small gear body, is fixed to a chassis. The pinion gears 2 as one set of planatory gears are engaged with a sun gear 5 and a ring gear 6. A bevel pinion gear 8 is engaged with a bevel gear of ring gears 6, 7, a gear shaft 11 is supported by an output side carrier 9, and the reduction- driving is executed by a belt, a gear and the like in the input reverse direction of the sun gear 5 by a driving shaft 14. According to this structure, the self- operated full-automatic continuously variable transmission effect from the reduction-driving to 1:1 can be smoothly executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-powered automatic continuously variable transmission having a planetary gear structure.

[0002]

2. Description of the Related Art A conventional transmission having a planetary gear configuration has a problem that each gear must be locked or free.

[0003] The present invention provides a fully automatic continuously variable transmission that changes the input value corresponding to each rotation range on the output side by itself without omitting the device that must lock each gear or make the gear free. The purpose is to:

[0004]

In order to achieve the above-mentioned object, one conventional pinion gear in the "Sun gear self-reversing drive type, fully automatic continuously variable transmission" of Japanese Patent Application No. 8-27250 is planetary. The planetary gear configuration as the gear
A planetary gear configuration that looks like a pair of planetary gears with two pinion gears is added, and both planetary gears are supported on the left and right sides of one carrier with one central axis, and the sun gears are integrated with each other. No. 10-237923, entitled "Self-actuated operation generator by connecting two planetary saw gears and bevel gears", an integral sun gear configuration for decelerating driving in the input direction from the output side meshes with a pair of planetary gears. The sun gear is fixed to the chassis, and the sun gear meshing with each set of planetary gears is decelerated in the input reverse direction with the output rotational force. The input numerical value in each output side rotation range is obtained by itself. is there.

[0005] The planetary gears, each of which has two sets of planetary gears and bevel gears connected by one central shaft, have the planetary gear side reduced in the input reverse direction of the sun gear according to the rotation speed of the output side bevel pinion gear support carrier. By driving, the drive distance of the meshing ring gear in the input direction is increased or decreased through the meshing planetary gears, and the input rotation force to the carrier is applied to increase the self-force in the input direction proportional to each rotation of the ring gear on each output side. Obtain increase / decrease driving force.

On the planetary gear side in which the sun gear having the above-mentioned structure is fixed to the chassis and formed into a pair, the ring gear meshing with the input of the carrier is also driven at a constant rate by the sun gear chassis fixed and the transmission pinion gear at a large input reverse driving force. Get.

[0007] If a planetary gear is formed as a planetary gear using a pair of the pinion gears as a planetary gear, and the gear is designed to drive the input reverse ring gear considerably, the bevel pinion gear is moved to a position smaller than the input distance by the action of the differential action. The initial reduction ratio can be increased by driving to.

[0008] When a driving configuration is adopted in which the sun gear self-reversing reverse deceleration driving ratio from the output side on the planetary gear side is set as a planetary gear using one set of the pinion gears as a planetary gear,
The number of rotations of the input-side planetary gear support carrier and the output-side bevel pinion gear support carrier until the number of rotations becomes 1: 1.
If the variable width of the continuously variable transmission gear between outputs becomes dull, a one-to-one ratio is obtained in the rotation range where the output side rotational speed is high, and the drive configuration that reduces the self-reverse rotation reduction drive ratio makes the variable width of the continuously variable transmission sharp. As a result, a one-to-one ratio of the final speed change drive range is obtained in the rotation range where the output rotation speed is low, so that the input initial reduction ratio and the output maximum rotation speed can be preset in accordance with the intended use. .

A planetary gear supporting carrier having a configuration in which the planetary gears of the two planetary gears are supported by one carrier at the same speed, and a pair of two planetary gear sun gear chassis on the planetary gear side. In contrast to the fixed-rate ring gear input reverse drive obtained at fixed speed, the sun gear self-reverse rotation deceleration drive on the planetary gear in pairs increases and decreases the drive distance in the input direction of the ring gear in proportion to the output rotation speed. In the differential action of the bevel pinion gear that meshes with both ring gears driven in opposition to each other, the output side bevel pinion gear supporting carrier can be driven in a differential manner from the input direction reduction drive to the variable drive from one to one.

[0010] Since the apparatus having the above-mentioned structure is composed of two sets of planetary gears, one set of sun gears is fixed to the chassis, and two sets of planetary gears are arranged in the input direction of the sun gears. Component means for increasing or decreasing by deceleration drive, or
As a configuration means for performing the input reverse deceleration drive of each pair of sun gears and the input direction deceleration drive of the pair of sun gears on the planetary gear side, the equivalent automatic gain obtained by this configuration at the input by the planetary gear support carrier is also used. A shifting action can be obtained.

With the above-described configuration, a stepless speed-change action can be obtained by the input rotation speed in each output rotation range.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes an input side carrier, 2 denotes a pinion gear, 3 denotes a transmission pinion gear integrated with a large and small gear, 4 denotes a pinion gear, 5 denotes a sun gear for reverse rotation driving, and 6 denotes a ring gear having a bevel gear. , 7 is a ring gear having a bevel gear, 8 is a bevel pinion gear, 9
Is the carrier on the output side, 10 is the central axis for fixing the chassis,
Reference numeral 11 denotes a pinion gear shaft, 12 denotes a sun gear fixed to a chassis, 13 denotes a fixing pin, and 14 denotes a drive shaft. Two, 3 and 4 pinion gears are supported on each gear shaft 11 on the left and right sides of one input side carrier. The pinion gear of 2 is 5
Planetary gear that meshes with the sun gear and ring gear
A set of planetary gears is composed of a transmission pinion gear 3 integrated with the large and small gears and a pinion gear 4. The bevel pinion gear 8 meshes with the bevel gears of the ring gears 6 and 7 and the output shaft carrier 9 and the gear shaft 11 Supported by 1
The figure shows a configuration in which the drive shaft 4 drives the deceleration in the reverse direction of the input of the sun gear 5 by means of a belt or a gear, and the arrows indicate the rotation direction of each gear.

[0013]

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

According to this configuration, the ring gear driving rotation speed (a) due to the single input of the carrier when the sun gear on the planetary gear side of each set is fixed, and the output side when the carrier input is stopped in the planetary. The rotation speed of the ring gear drive carrier (b) via the planetary gear by the sun gear reverse rotation drive from the drive shaft by one rotation of the bevel pinion gear support carrier, each second unit [rp] of the output side bevel pinion gear support carrier
m] is subtracted from the driving speed (d) in the opposite direction of the ring gear input by the input operation of one rotation of the carrier by fixing the sun gear on the set of two planetary gears. (The operating position of the bevel gear by the differential action) is the variable gear ratio per second (B) of the input side carrier in each rotation range of the output side bevel pinion gear support carrier, and (B) = ｛(b) + (C)-
(D) It is obtained by the formula of｝ ÷ 2.

The input-side input speed (C) required for the same speed or acceleration for one rotation of the output-side second [rpm], which changes in each rotation range, is determined by the output-side bevel pinion gear support carrier. By dividing one rotation by the variable gear ratio (B) per second, the input rotation speed (C) required for one rotation in each rotation range on the output side can be obtained by the formula of 1 ÷ (A).

The input rotation value (D) in seconds required for the rotation [rpm] on the output side, which changes in each rotation range, is:
The input rotation speed (C) required for one rotation is multiplied by the rotation speed in units of seconds on the output side (C) at this time, so that the input rotation speed in seconds at the same speed as or higher than the rotation range on the output side. (D) is obtained, and is obtained by the equation of (D) = (C) × (c).

The value of the input rotation value in seconds (D) in each numerical value in these formulas is represented by the rotation speed (c) in seconds on the output side as the vertical axis, the input number as the horizontal axis, and the input rotation value in seconds (D). Is replaced by X, and the input rotation value per second (D) is drawn with a curve similar to a parabola,
As with the output-side low-speed rotation range, a state is obtained in which rotation input can be performed in which the number of inputs is not proportional to the number of inputs in the output-side high-speed rotation range.
A smooth self-contained, fully automatic, continuously variable transmission effect from deceleration drive to 1: 1 can be obtained.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of an arrow indicating a driving direction of each part in a rotation input of one carrier in a direction of an arrow in a self-powered fully automatic continuously variable transmission by connecting and driving two sets of planetary gears and a bevel gear. It is a figure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carrier (input side) 2 Pinion gear 3 Transmission pinion gear with big and small gears 4 Pinion gear 5 Sun gear 6 Ring gear with bevel gear 7 Ring gear with bevel gear 8 Bevel pinion gear 9 Carrier (output side) 10 Center shaft (chassis fixed) 11 Pinion gear shaft 12 Sun gear 13 Fixing pin 14 Drive shaft

Claims (1)

[Claims] 1. A set of planetary gears is supported by two pinion gears (3, 4) on the left and right of one carrier (1), and a set of planetary gears is supported by one pinion gear (2). A ring gear (6, 7) meshing with a gear has a bevel gear, and the ring gears (6, 7) are connected by a bevel pinion gear (8) supported by a carrier (9) to mesh with a pair of planetary gears. The sun gear (12) is fixed to the chassis,
A self-powered fully automatic continuously variable transmission that is driven by coupling of two sets of planetary gears and bevel gears, in which a sun gear (5) meshing with one set of star gears is driven in reverse in the input direction from a carrier (9).