JPS5839873A - Planetary reduction gear - Google Patents

Abstract

PURPOSE:To obtain a small-sized planetary reduction gear as a whole by constructing a planetary mechanism of friction roilers for sizing a sun member and a planetary member smaller. CONSTITUTION:A planetary roller 10 is arranged to be in touch with the periphery of sun roller 9 rotating round an input shaft 8. A shaft 11 of this planetary roller 10 is made eccentric from its axis, and pivotted on an eccentric shaft 12 to be easily oscillated. Since it is also in touch with the inner circumference of a fastening ring 5, when the fastening ring 5 is pushed by a push ring 7, the inner diameter of the fastening ring 5 is reduced, and the planetary roller 10 is pushed to the sun roller 9. This construction prevents slippings between the fastening roller 5 and the planetary roller 10 and between the planetary roller 10 and the sun roller 9, and permits to endure a high load easily at a great reduction ratio.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a planetary reduction mechanism in which power is transmitted through one turn of the rollers, and a large reduction ratio is possible with the /J\ type.
This relates to a reduction gear fllK that aims to reduce the amount of deceleration and the generation of heat due to deceleration.

In order to enable a large reduction ratio in the conventional planetary reduction gear system using gears, it is necessary to increase the number ratio of the sun gear, the idler wheel, and the gate gear.

However, considering small oxidation, the number of teeth on the sun wheel should be reduced.
K is to reduce the gear diameter, increase the ratio of the number of teeth between the sun wheel and the planetary gear, and reduce the gear diameter of the planetary gear.
In order to maintain the strength of gears operated at large reduction ratios, even if the tooth profile is shifted.

There was a limit due to the interrelationship of the gear module, mesh ratio, number of teeth, etc. Therefore, the diameter of the sun gear does not become very small, and accordingly, the diameter of the gear does not become small. There was almost no hope for overall miniaturization.In addition, in the case of a planetary reduction mechanism using gears, gear meshing noise may occur, intermittent contact due to gear meshing, and wear and tear.
There were problems such as noise and heat generated by K.

Therefore, the present invention aims to realize a planetary reduction mechanism using rollers that can be easily reduced in size since the reduction ratio is determined by the ratio of the roller diameters. body, input side rotating body, and output 5111
The case body has a tapered inner surface with a small diameter at the center and a larger diameter as it rotates toward the entrance. cT Ruchi I4
- make a slit on the circumference of the ring, and 1
It consists of a benefit ring placed on the inner circumferential surface of the case and a suppression ring that suppresses the body tightening ring with the case population.

The input-side rotary body consists of a sun roller that rotates around a single-handed shaft at the center of the case.

The output side rotation mechanism includes an appropriate number of planetary rollers disposed on the side ↑5 that are in contact with and interlock with the sun roller Jl1118.

The planetary roller is rotatably mounted in eight positions (two rotating shafts,
#The rotating shaft is eccentric to the fine center of the rotating shaft, and the eccentric shaft is rotatably attached to the rotating shaft, and the eccentric shaft is fixed to the output shaft and rotates around the output shaft. It consists of a loose 14-two holder that fixes the eccentric shaft on a concentric circle with the center, and the #-marked planetary roller is brought into close contact with the inner periphery of the tightening ring◇ Hereinafter, the present invention will be carried out. An example will be explained with reference to FIG. 1. The play 1 reduction device according to the present invention is composed of a case body, an input *a rolling body 1, and an output @ rotation mechanism 0.

That is, the case body has a tapered portion 2 which has a small diameter at the back and a large diameter toward the entrance direction, and a #taper S! A case 1 has a female threaded portion 8 continuous to the large diameter end of the case 1 and a circular circumferential surface 4. Tightening cylinder S with diagonal slit 6 in one place, and tII
A suppression cylinder 1 screwed into the female threaded portion 3 continuous with the IS2 and presses the tightening ring i disposed with its outer periphery in sliding contact with a part of the tenor 9 of the # case 1. It consists of.

First, insert the tightening ring S with the slit in it while slidingly contacting the Q = -W62 of the case 1, align the suppression ring 7 with the female threaded part 3KIm of the case 1, and tighten it. By pressing T, the tightening cylinder S opens the slit.
By hitting the chi/1-S by an interval of 0, it is possible to change the inner diameter of the small cup. 0 arranged in
Note that 21 is a 7-lunge stopper for removing the rotating body on the input side.

On the other hand, the output rotation mechanism C has an appropriate number of planetary rollers 10 and a wrinkled planetary roller 10 disposed around the # sun distribution roller 11111-4 and a wrinkled planetary roller 10 rotatably attached. The rotating shaft 11 that is attached to the core, and the nuclear rotating shaft 11.

One rotation shaft 11 is eccentric to its center, and an eccentric shaft 12 is passively attached to the shaft, and one of the opposing sides is fixed to an output shaft 13, and The eccentric shaft 12 is horizontally fixed and held on a planetary roller holder 10 which rotates as a shaft on a concentric circle with the fine point of rotation, and the output l&! The entire 1-rotation mechanism C consists of an output 111 rotation mechanism bearing 1 placed at the center of the case 1 and the case lid.
11.2 (l, therefore (b)) is rotatably attached to the shaft, and the input I11 rotating body B is in contact with the planetary roller 10&C% of the output side rotation mechanism 0.

In addition, the input 11i1 rotary body bearing 17, Ill built into the internal center position is pivotally attached, and the #iic' idle roller 10 is brought into contact with the inner periphery of the tightening ring 6, and the planetary reduction gear Therefore, the rotating shaft 11 of the planetary roller 10, which is disposed in contact with the circumferential surface of the sun roller 9 rotating around the input #8, is eccentric to the axis of the # rotating shaft 11.

It is rotatably mounted on the eccentric shaft 12 and is rotatably mounted on the eccentric shaft 12.

Since it is also in contact with the circumference of the tightening ring S, when the tightening cylinder 5 is pressed by the pressing cylinder IK, the inner circumferential diameter of the tightening ring 5 is reduced, and the planetary roller 10 is connected to the sun roller. 9 is pressed against.

As a result, there is no slug lag between the tightening ring S, the planetary roller 10, the planetary roller 10, and the sun roller 9, and the Omukai IK at a large reduction ratio can be sufficiently withstood. , roller 9.10
Because power is transmitted through contact between them.

Since there are no restrictions due to the various conditions of the gear, it is possible to make the sun roller 9 smaller, and accordingly it is also possible to reduce the diameter of the idler lI2-toe 10, making it possible to downsize the entire planetary reduction gear. In addition, since the rollers 9 and 10 are in contact with each other, there is less meshing noise and heat generation due to the meshing of the gears, and the planetary roller 11 is tightened by the tightening ring 5 marked with #. Omukai NK can withstand enough, and if the number of rollers 10 and 10 is large, it will be possible to withstand even larger loads. −
It is also possible to make 010 from synthetic resin.

Compared to the planetary reducer 11IK using gears, a large reduction ratio can be obtained with small waves, and the amount of reduction and heat required are small.

This is a very significant invention in that it is inexpensive.

Also S Figure 4, 51! ! ! Kyowa 1.0 can be achieved by replacing the planetary roller 18 with an abbreviated cross-sectional shape as shown in FIG. Input side rotating body bearing 17.111 is not used,
The sun roller 9 is rotatably held by the planetary roller holder, and the play 1a-ler 1! Even if the rotating shaft 11 of S is supported by an eccentric bearing 1-, the gist of the present invention will not be impaired in the slightest, so this is a good thing! Not even i15″!

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front cross section, FIG.
' Line cross-sectional view [41!4 is a normal cross-section in another embodiment '1
, No. 5- is its truncated wn1. M・Case part G・Input hook rotating body C・・Pad 11 rotations am 1・・Case 2・・Part of the rotor 3・・・
Female thread s 4...Inner circumference [iI s...Tightening ring 6...Slit 7...Press cylinder 8
... Input shaft ... Sun sealer 10 ... Planetary roller 11 - rotation shaft 12 ... Eccentric shaft 13
... Output shaft 14 ... Planetary roller holder 1s.
...Roller 1...Eccentric bearing 17...Input side rotating body bearing 1-...Input 1111g1 rolling body bearing 1
9... Output *a rotation mechanism bearing 20... Output side rotation mechanism bearing 22... Case Hanshoken Applicant Hisashi Baki Figure 1 Lx / Figure 2 Figure 5 1525722

Claims (1)

[Claims] 1. Consists of a case body, an input-side rotating body, and an output-side rotating mechanism, and the case body has an A4-shaped inner peripheral surface with a small diameter at the back and a large diameter toward the entrance direction. , a slit is made on the circumference of the ring whose outer circumference is in contact with the circumference WJKflj, and the tightening ring arranged on the inner peripheral surface of the case and the skeleton tightening ring are suppressed by the case population. The input side rotating body consists of a sun roller rotating at the center of the case with the input shaft as an axis. jil11tiK Appropriate number of idlers arranged so as to move in abutting motion, a (mouth) roller on which the idlers are rotatably mounted, and a rotating shaft connected to the axis of the rotating shaft. An eccentric shaft eccentrically attached to the center and swingably attached to the output shaft Km is created and rotates once around the output shaft, and the It consists of a floating roller holder with a fixed eccentric shaft V, and the planetary roller is attached to the tightening ring 8 years old! 4 for letting me wear one! Planetary reduction device for image◎