KR19980084114A - reducer - Google Patents

Abstract

The present invention relates to a speed reducer, and in particular, an input shaft and an output shaft are inserted and fixed at one end and the other end, respectively, and have a cylindrical length; A unit reducer configured to be stacked in the casing so that the input shaft and the output shaft are located on the same axis line, and determine a reduction ratio according to the number of stacked layers; By fixing the unit reducer and the case integrally, providing a fixing means for selectively utilizing the output shaft or the case as the shaft, reducing the overall volume of the reducer and at the same time reducing the noise while transmitting a large power, reducing the gear ratio without deformation of the reducer Can be adjusted according to the selection.

Description

reducer

The present invention relates to a speed reducer, and in particular, to reduce the overall volume of the speed reducer while at the same time to reduce the noise while transmitting a large power, and to reduce the speed ratio arbitrarily without modification of the speed reducer.

Conventional reducers include a motor that generates large power, an input shaft connected to the motor to transmit driving force, a gear box surrounding the gear to reduce the speed through the input shaft from the outside, and a speed reduced through the gear as a structure. It is composed of an output shaft for transmitting, such a reducer forms an output shaft eccentric with the input shaft or orthogonal to each other according to the position of the gears arranged in the gearbox.

When the conventional speed reducer configured as described above is decelerated while the gears rotate by the input shaft connected to the motor, the reduced speed is operated by the output shaft to operate the structure. However, such a conventional speed reducer is not only a factor that occupies a lot of the overall volume of the reducer because the gearbox is operated with the output shaft fixed, and also generates a lot of noise. Since the reduction ratio has to be adjusted, there is a problem that the number of parts increases and the production cost increases accordingly.

Therefore, the present invention has been made to fundamentally solve the problems of the prior art, the object of the present invention is to provide a speed reducer that can easily adjust the reduction ratio of the speed reducer without deformation of the speed reducer.

It is another object of the present invention to provide a speed reducer that allows the case surrounding the speed reducer to transmit power as an output shaft, thereby simplifying the assembly and thus reducing the production cost.

1 is an exploded perspective view of a reducer according to the present invention;

2 is an exploded perspective view of main parts of the reducer according to the present invention;

3 is a combined cross-sectional view of the reducer according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: case 110,110a: snap ring

120,120a: Bearing 200: Input shaft

210: output shaft A: unit reducer

300: first unit reducer 310,410,510: rotating plate

311,411,511: protrusion 312,412,512: large internal gear

320,420,520: Intermediate plate 321,421,521: Driving groove

322,422,522: Rotating groove 330,430,530: Drive plate

331,431,531: Small internal gear 332,432,532: Protrusion groove

350,450,550: Drive gear B: Fixing means

700,710: Keyway 720: Bar Key

As a means for achieving the above object, the present invention provides a cylindrical case having an input shaft and an output shaft inserted into and fixed at one end and the other end, respectively; A unit reducer configured to be stacked in the casing so that the input shaft and the output shaft are located on the same axis line, and determine a reduction ratio according to the number of stacked layers; The unit reducer and the case is integrally fixed, characterized in that it comprises a fixing means for selectively utilizing the output shaft or the case as an axis.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

EXAMPLE

1 is an exploded perspective view of a reducer according to the present invention, FIG. 2 is an exploded perspective view of main parts of the unit reducer according to the present invention, and FIG. 3 is a cross-sectional view of the reducer according to the present invention.

1 and 3, the input shaft 200 and the output shaft 210 are inserted and fixed at one end and the other end, respectively, and have a cylindrical length 100, the input shaft 200 and the output shaft 210, respectively. ) Are stacked in the case 100 so that the same position is on the same axis, and the unit reducer (A) and the unit reducer (A) and the case 100 to determine the reduction ratio in accordance with the number of stacked, Optionally the fixing means (B) for utilizing the output shaft 210 or the case 100 as a shaft is basically configured.

The case 100 is formed to have a long length or a short length depending on the degree of stacking of the unit reducer A stacked therein, and is fixed and rotated integrally with the unit reducer A stacked therein, and has a motor (not shown) at one end. ) And the input shaft 200 is connected and fixed to the other end and the output shaft 210 is inserted and fixed to the other end.

The unit reducer (A) is stacked inside the case (100), and determines the reduction ratio of the reducer according to the number of stacked units to rotate the case (100). The unit reducer (A) is largely the first unit reducer (300), The second unit reducer 400 and the third unit reducer 500.

The speed reducer A is not limited to the case where only the first unit reducer 300, the second unit reducer 400, and the third unit reducer 500 are inserted into and fixed in the case 100. The number can be arbitrarily adjusted according to the reduction ratio.

That is, in the case 100, the unit reducer A may be stacked only the first unit reducer 300 according to the reduction ratio of the reducer, and only the first unit reducer 300 and the second unit reducer 400 may be stacked. The first unit reducer 300, the second unit reducer 400, the third unit reducer 500, the fourth unit reducer (not shown) ..., the tenth unit reducer Can be stacked.

The first unit reducer 300, the second unit reducer 400, and the third unit reducer 500 may include driving plates 330, 430 having small internal gears 331, 431, and 531. 530 and drive gears 350, 450, and 550 meshed with the small internal gears 331, 431, and 531 of the driving plates 330, 430, and 530. Rotating plates 310, 410, 510 having large internal gears 312, 412, 412 to engage a plurality of rotary gears 340, 430, 530 that mesh with And, between the rotary plate 310, 410, 510 and the driving plate 330, 430, 530 is in close contact with the drive gear 350, 450, 550 and the rotary gear ( 340, 440, 540 is an intermediate plate rotatably formed around the driving grooves 321, 421, 521, the rotating grooves 322, 422, 522 (320), 420, and 520, and the first unit reducer 300, the second unit reducer 400, and the third unit reducer 500 are rotating plates 310, 410, ( 510 to the combination of the projections 311, 411, 511 formed in the upper portion and the projection grooves 332, 432, 532 formed in the lower driving plate 330, 430, 530.In it the input shaft 200 to output shaft 210 is formed to be the driving force is transmitted.

Here, the driving gears 350, 450 of the rotary gears 340, 440, and 540 of the first unit reducer 300, the second unit reducer 400, and the third unit reducer 500. When the diameter of the 550 is formed differently and used in combination, different reduction ratios according to the rotational speed ratio can be obtained.

That is, the rotary gear of the first unit reducer 300 has a larger diameter than the drive gear, the rotary gear of the second unit reducer has the same diameter as the drive gear, and the rotary gear of the third unit reducer is the drive gear. After the diameter is smaller, the gear ratio of the first unit reducer is 3: 1, the gear ratio of the second unit reducer is 4: 1, and the gear ratio of the third unit reducer is 5: 1. The reduction ratio according to the rotation speed ratio of A) can be obtained.

The gear ratio of the unit reducer is not limited to 3: 1,4: 1,5: 1 ..., and if the reduction ratio of the reducer can be adjusted, the first unit reducer 3: 1, the second unit reducer 3: 1, A three-unit reducer can be loaded continuously with the same gear ratio as 3: 1.

Therefore, the reduction gear ratio of the reducer can be arbitrarily obtained if the gear ratio and gear ratio of the unit reducer are arbitrarily obtained.

Fixing means (B) is the intermediate plate 320, 320, 520 having a relatively larger diameter than the rotating plate 310, 410, 510 and the driving plate 330, 430, 530 After forming a plurality of key grooves 700 on the outer circumferential surface, and formed a key groove 710 in the longitudinal direction at a position corresponding to the key groove 700 on the inner wall of the case 100, the key grooves 700, ( If the 710 coincides with the key grooves 700 and 710, the bar key 720 is inserted into and fixed to the case 100 so that the case 100 rotates like the reducer A.

Reference numeral 110, 110a is a snap ring, 120, 120a is a bearing.

In the present invention configured as described above, the unit reducer A includes the first unit reducer 300, the second unit reducer 400, and the third unit reducer 500, and the first unit reducer 300, the second unit reducer 500. The unit reducer 400 and the third unit reducer 500 are again rotating plates 310, 410, 510, intermediate plates 320, 420, 520, driving plates 330, and 440. And 540, respectively.

Therefore, in order to combine them, the intermediate plate 320, 420, 520 is sandwiched between the rotating plate 310, 410, 510 and the driving plate 330, 430, 530. And drive gears 350, 450, and 550 into small internal gears 332, 432, and 532, the drive gears 350, 450, and 550 are drive grooves 321. ), 421 and 521 are located on the large internal gear side 312, 412, 512 of the rotary plate 310, 410, 510.

At this time, while rotating gears 340, 440, 540 are located on the large internal gears 312, 412, 512, the rotary grooves of the intermediate plates 320, 420, 520 322, 422, and 522, respectively, the rotary gears 340, 440, and 540 are large internal gears 312, 412, 512 and drive gears 350, ( 450), 550 is engaged between.

If the rotary plate 310, 410, 510, intermediate plate 320, 420, 520, driving plate 330, 430, 530 as described above, the projection 311 , 411, 511 are located on the upper of the rotary plate 310, 410, 510, and the projection grooves 332, 432, 532 are the driving plate 330, 430, ( 530 is located at the bottom.

At this time, the first unit reducer 300, the second unit reducer 400, the third unit reducer 500, the projections (311, 411, 511) and the projection grooves (332), (432), (532). Connect each other to be driven by using).

Thereafter, the bearing 1200 is seated at one end of the case 100, and then the snap ring 110 is fitted to the output shaft 210, the first unit reducer 300, the second unit reducer 400, and the third unit reducer. 500, the input shaft 200, the bearing 120a, and the snap ring 110a are sequentially coupled.

When the reduction gear is used in the state in which the unit reduction gear A is coupled to the case 100 as described above, the driving force through the input shaft 200 is reduced because the case 100 and the unit reduction gear A are not fixed to each other. 500, the second unit reducer 400, and the first unit reducer 300 are sequentially decelerated to operate the output shaft 210.

Contrary to the above, in order to utilize the case 100 as an axis, a bearing 120, a snap ring 110, an output shaft 210, a first unit reducer 300, and a second unit reducer may be formed from one end of the case 100. 400, the intermediate unit 320, 420 of the first unit reducer 300, the second unit reducer 400, the third unit reducer 500 in a state where the third unit reducer 500 is inserted in this order. The key groove 700 formed on the outer circumferential surface thereof matches the key groove 710 formed on the inner wall of the case 100.

Since the key groove 710 of the case 100 and the key groove 700 of the unit reducer A coincide with each other, the key grooves 700 and 710 are fitted with the bar key 720 to be fixed. Then, since the case 100 is fixed integrally with the unit reducer A, the case 100 is rotated together with the unit reducer A. FIG.

According to the operation sequence of the reduction gear, when the input shaft 200 connected to the first motor is driven, the driving plate 330 is engaged by the small internal gear 331 around the driving gear 350, and the rotating plate 310 is rotated. Is engaged by the rotary gear 340. Since the rotary gear 340 is fixedly inserted into the rotary groove 322, the third unit reducer 500 is operated, and the third unit reducer 500 is operated. In this case, the second unit reducer 400 and the first unit reducer 300 are operated by the above method.

At this time, if the case 100 is not integrally fixed with the unit reducer A, the output shaft 210 is operated and if the case 100 is integrally fixed with the unit reducer A by the bar key 720, the case ( 100) is to rotate.

As described above, according to the present invention, the unit speed reducer accumulated inside the case is integrally fixed by the bar key, and when the input shaft is driven in the fixed state, the case rotates like the unit speed reducer. The same effect can be achieved. Therefore, as the case is directly rotated, the volume occupied by the speed reducer can be transmitted with a small amount of power.

In addition, since the stacking degree and gear ratio of the unit reducer stacked in the case can be arbitrarily adjusted, the reduction ratio of the reducer can be simply controlled without deformation of the reducer, and the number of parts is reduced by that, and the assembly is simplified and produced accordingly. Costs can be reduced, etc.

In the above, the present invention has been described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and should be made by those skilled in the art to which the present invention pertains without departing from the gist of the present invention. Various changes and modifications can be made.

Claims (4)

A cylindrical case having an input shaft and an output shaft inserted and fixed at one end and the other end, respectively, having a predetermined length; A unit reducer configured to be stacked in the casing so that the input shaft and the output shaft are located on the same axis line, and determine a reduction ratio according to the number of stacked layers; Reducer, characterized in that consisting of a fixing means for fixing the unit reducer and the case integrally to selectively utilize the output shaft or the case as an axis. The drive unit of claim 1, wherein the unit reducer includes a first unit reducer, a second unit reducer, and a third unit reducer, and the first unit reducer, the second unit reducer, and the third unit reducer are driven again with a small internal gear. A rotating plate having a large internal gear to engage a plate, a plurality of rotary gears meshed with a drive gear meshed with a small internal gear of the drive plate, and a driving gear and a rotating gear in close contact with the rotating plate and the driving plate. Reducer, characterized in that consisting of the intermediate plate is formed with a rotation groove around the drive groove possibly. The speed reducer according to claim 2, wherein the first unit reducer, the second unit reducer, and the third unit reducer are continuously arranged by a combination of a protrusion formed on an upper portion of the rotating plate and a protrusion groove formed on a lower portion of the driving plate. The method according to claim 1, wherein the fixing means forms a plurality of key grooves on the outer circumferential surface of the intermediate plate formed relatively larger than the rotating plate and the intermediate plate, the key groove in the longitudinal direction at the position corresponding to the key groove on the inner wall of the case Reduction gear, characterized in that the case is rotated like a unit reducer by inserting and fixing the bar key in the key groove if the key groove is matched.