KR200145455Y1 - Cycloid reduction device - Google Patents

Abstract

The present invention relates to a cycloidal deceleration device, comprising a bearing for eccentrically rotating the power of the input shaft (IS) transmitted from the driving means (M), a disk connected to the bearing and a lubrication member radially inserted into the disk. In the reduction device for reducing the number of revolutions to be sent to the output shaft (OS) through the output disk (OD) by sliding the feed to the deceleration rotation member having a cycloid tooth type inside, the eccentric shaft hole (11a) is provided with the input shaft (IS) A plurality of disks (12) having a plurality of disks (12) which are integrally provided on the outer circumference of the boss (11) provided with a plurality of lubricating members (15) which are installed outside the bearing (12) and are provided with a plurality of radially ( 13), the guide means between the top of the lubrication member 15 to maintain the gap between the lubrication member 15 and to minimize the load according to the axial load during rotation; The ring 17 is provided, and the space ring 16 is provided between the upper ends of the bearings 12 so as to form the spaces S having a predetermined interval between the plurality of bearings 12. This is because the rotational force of the drive means rotates decelerately to the output shaft OS via the bearing 12, the disk 13, and the deceleration rotating member 14, thereby improving the smoothness of the deceleration operation of the deceleration device, preventing noise, and easily reducing the reduction ratio. There are effects such as adjustment.

Description

Cycloidal reduction gear

The present invention relates to a cycloidal reduction device, and in detail, a plurality of bearings are integrally formed in a boss having an eccentric shaft hole in the center, and a plurality of disks having a plurality of lubricating members on the outside of the bearings, It is designed to minimize the volume of the reduction device and to allow the rotational force of the drive means to be decelerated to the output shaft through the bearing, disk and the reduction gear, and smoothly. It relates to a cycloidal deceleration device to minimize the noise.

In general, the deceleration device is a device for decelerating the first drive rotational power supplied from a driving means such as a motor to output the reduced rotational force to the output shaft.

This is applied to various mechanisms and systems that require the driving force of the output shaft reduced than the initial rotational driving force.

FIG. 8 illustrates a structure of an involute reducer using a conventional involute tooth type. When a plurality of involute gears from an input shaft to an output shaft are engaged with each other and then rotated, the driving torque may be reduced by a difference in gear ratio. This is to output the reduced rotational force to the output shaft.

However, the involute reducer was not able to smoothly reduce the rotational force due to wear due to the engagement contact, and the damage was severe because the load was concentrated on the gear tooth.

In addition, there is a closed end to increase the noise due to mutual friction when the gear teeth rotate to provide a reduction device having a cycloid (Cycloid) teeth to effectively compensate for this.

FIG. 7 is a cross-sectional view of a conventional speed reduction apparatus using a cycloid tooth, and a conventional speed reduction apparatus 30 having a cycloid tooth includes a rotary ball provided with a bearing 31 on an input shaft IS connected to a driving means M. 32 is installed, and the rotary hole 32 is provided with a plurality of rod-shaped input side connector 33 in the body is connected by inserting into the input disk (34).

In addition, the input disk 34 is provided with a plurality of slide holes (34a) radially, and a plurality of lubricating members (35) respectively inserted into the slide holes (34a), the end of such a lubricating member (35) The slide 34 is installed in sliding contact with the cycloid tooth 36a formed at the inner circumference of the deceleration rotating member 36 provided outside the disk 34.

The decelerating rotation member 36 includes a plurality of output side connectors OT to install an output disk OD, and an output shaft OS is provided on the output disk OD. In the drawing, reference numeral K denotes an arbitrary driving mechanism using reduced rotational power.

In the conventional deceleration device 30 configured as described above, when the input shaft IS is rotated by the driving of the driving means M, the bearing 31 and the rotating hole 32 rotate accordingly, and the rotating hole 32 The input disk 34 is also rotated through the input side connector 33 by the rotation of the), and the outer side of the lubricating member 35 is slid along the inner circumferential surface of the cycloid tooth 36a of the deceleration rotating member 36. The deceleration rotating member 36 also rotates.

At this time, the rotary ball 32 rotated by the rotation of the bearing 31 is decelerated rotation by the sliding rotational force with the bearing 31, the lubrication member of the input disk 34 by the deceleration rotation of the rotary ball 32 (35) rotates in a reduced state than the rotational force of the bearing 31 and the rotary ball 32, the deceleration rotation member 36 by the frictional force of the sliding contact force of the lubrication member 35 that slides in the cycloid tooth 36a. ) Is rotated at low speed.

Therefore, when the rotational speed that rotates on the input shaft IS is transmitted to the output shaft OS through the output disk OD by the initial driving force, the deceleration function can be performed.

In addition, a conventional gear reducer (domestic patent application No. 84-2553) has been provided.

The gear reducer is configured to engage external teeth inside the internal teeth fixedly fixed to the body of the reducer housing, and the differential rotational force generated by the dimension difference of these gears is drawn out on the output shaft. The pinion gears are fixed on the installed input shaft, and several flat gears having dimensions larger than the pinion gears on the upper, lower, left, and right sides of the pinion gears are installed to coincide with the pinion gears simultaneously. While the sub-gear is provided, an inner tooth is annularly formed on one side inner circumferential surface of the outer tooth, and the above-described eccentric roller sub-gear is internally joined.

This means that when the rotational force of the input shaft is transmitted to the pinion gear, several flat gears in contact with the pinion gear are rotated, and the eccentric roller sub-tooth gear is rotated according to the rotation of the flat gear. Accordingly, the rotational force of the eccentric roller sub-gear is sequentially transmitted to the external tooth and the internal tooth, so that the gear shaft can decelerate due to the difference in teeth while reaching the output shaft.

However, in the former case shown in FIG. 7 of the conventional reduction gear using the cycloid tooth type as described above, the bearing 31 and the rotating hole 32 installed on the input shaft are connected to the input disk 34 through the input side connector 33. Therefore, there is a disadvantage that the total volume is provided to be quite large.

In addition, as each component is provided separately, the coupling performance of the reduction gear is not good, and it is difficult to adjust the reduction ratio by the separate components. There was a problem.

In addition, in the latter case (domestic patent application No. 84-2553), as a plurality of gears come into contact with each other, there is a concern that wear due to the contact of the teeth and damage caused by load concentration are concerned.

Therefore, the present invention has been devised to solve the conventional problems as described above, the object of the present invention is to improve the installation bondability of each component is integrated, as well as to minimize the overall volume according to, according to the deceleration operation It is to provide a cycloidal reduction device that can minimize noise and improve the deceleration function by smooth operation.

1 is a perspective view of the reduction device of the present invention,

2 is a front view of the present invention,

Figure 3 is a cross-sectional view taken along the line A-A of Figure 2, the installation state of the present invention.

4 is a cross-sectional view taken along the line B-B of FIG.

5 is a structural diagram of a state in which the deceleration driving force transmitted from the input shaft to the output shaft in the reduction device of the present invention,

6 is a step-by-step description of the operation of the reduction device of the present invention,

6a is an initial state diagram,

6b is a state in which the lubricating member is moved to the P2 position,

6c is a state in which the lubricating member is moved to the P3 position,

7 is a cross-sectional view of the installation state of a conventional reduction gear;

8 is a structural diagram of a conventional general involute reducer.

(Explanation of symbols for the main parts of the drawing)

10; Reduction gear 11; boss

11a; Eccentric shaft 12; bearing

13; Disk 13a; Slide ball

13b; Central hole 14; Deceleration rotating member

14a; Cycloid tooth type 14b; Groove

14c; Protrusion 15; Lubrication member

16; Space ring 17; ring

T1, T2; Fixing member M; Driving means

IS; Input axis OT; Output side connector

OD; Output disk OS; Output shaft

K; Driving mechanism

In order to achieve the above object, the present invention provides a bearing for rotating the power of the input shaft IS transmitted from the driving means M, a disk connected to and driven by the bearing, and a lubrication member radially inserted into the disk. In the reduction device for reducing the number of revolutions to be sent to the output shaft (OS) via the output disk (OD) by sliding the feed to the deceleration rotating member having a cycloid tooth type,

A plurality of bearings 12 integrally installed at an outer circumference of the boss 11 having the eccentric shaft hole 11a in which the input shaft IS is installed;

A plurality of disks (13) installed outwardly of the bearing (12) and having a plurality of radially provided lubricating members (15);

A ring (17) provided as a guide means between the upper ends of the lubricating member (15) to maintain the spacing of the lubricating member (15) of the double row and to distribute the axial load during rotation to minimize the load;

A space ring 16 installed between the upper ends of the bearings 12 so as to form a space portion S having a predetermined interval between the plurality of bearings 12;

It provides a cycloidal reduction apparatus comprising a.

One embodiment of the present invention as described above is described in detail by the accompanying drawings as follows, and some identical parts are denoted by the same reference numerals.

1 is a perspective view of the present invention, FIG. 2 is a front view of the present invention, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 of the present invention, and is a structural diagram installed to perform an actual deceleration function, and FIG. 4 is FIG. It is sectional view of the BB line.

The boss 11 in which the input shaft IS of the drive means M is inserted in the inventive deceleration device has an eccentric shaft hole 11a at the center, and a bearing 12 and a disc (outside the boss 11). 13), and the decelerating rotation member 14 in which the cycloid tooth 14a is formed at the inner circumference is sequentially formed and integrated.

That is, the bearing 12 is provided with a plurality as shown in Figures 3 and 4, the space between the bearing 12, the upper space between the two bearings 12 to form a space (S) of a predetermined interval formed Ring 16 is provided.

In the disk 13, a plurality of radially penetrating slide holes 13a are formed. In this embodiment, eight are formed, and the lubrication member 15 inserted and installed is inserted and installed in this embodiment.

The lubricating member 15 has a curved shape at both ends thereof, and one end of the lubricating member 15 is exposed toward the center hole 13b, which is the inner side of the disk 13, and the other end thereof, toward the deceleration rotating member 14, which is the outer side of the disk 13. Exposed.

That is, one end of the lubrication member 15 is in contact with the groove 14b or the projection 14c of the cycloid tooth 14a, which is the inner circumference of the deceleration rotating member 14.

As shown in FIG. 2, the lubricating member 15 in contact with the cycloid tooth 14a is differently exposed to the outside of the disk 13, and accordingly, the inner center hole 13b of the disk 13 is different. The length of exposure is inversely proportional.

This is because the lubricating member 15 is the disk 13 because the bearing 12 located in the center hole 13b of the disk 13 is eccentrically rotated in a state eccentrically to one side from the center of the boss 11. The degree of exposure to the outside of is converted.

Meanwhile, as shown in FIGS. 3 and 4, an outer side of the space ring 16 maintains an interval of the lubricating member 15 between the decelerating rotating members 14, minimizes an axial load during rotation, and A guide 17 serves to distribute the load in the direction.

As described above, the deceleration rotating member 14 forms a cycloid tooth 14a having an inner circumference as mentioned, and a plurality of concave grooves 14b and protrusions 14c are formed in the present embodiment. It is illustrated that each of 11 provided by dividing.

The plurality of disks 15 and the space ring 16 are fixed to the plurality of through holes penetrated in the axial direction by the fixing member T1, and the deceleration rotating member 14 and the ring 17 are also shafts. The fixing member (T2) is fixed to the plurality of through-holes formed in the direction. Such a fixing member may exemplify a key.

Referring to the operation of the present invention as described above is as follows.

5 is a structural diagram in which the deceleration driving force transmitted from the input shaft is transmitted to the output shaft in the reduction apparatus of the present invention, and the input shaft IS of which the driving force of the reduction apparatus 10 rotates simultaneously with the driving of the driving means M is boss. (11) and the bearing 12 are eccentrically rotated, and the disk 13 and the deceleration rotation member 14 is decelerated by the eccentric rotational force of the bearing 12, this deceleration rotational force is output shaft through the output disk (OD) (OS) and driving mechanism (K) are shown.

6A, 6B, and 6C are sequential operation explanatory diagrams of the present invention deceleration device.

As shown in FIG. 6A, when the thick side of the eccentric boss 11 is positioned upward, the bearing 12 is also biased toward the upper side. The upper side of the bearing 12 eccentrically positioned in this way is close to the upper position α in the center hole 13b of the disk 13.

At this time, one side of the lubrication member 15 that has been exposed to the inner side of the center hole 13b is in pressure contact with the upper side, and thus the other side of the lubrication member 15 is exposed to the upper portion of the disk 13. Therefore, the upper end of the lubrication member 15 is positioned at the initial position P1 of the recess 14b formed in the cycloid tooth 14a of the deceleration rotating member 14.

In this state, when the input shaft IS is rotated and the positions of the boss 11 and the bearing 12 are switched as shown in FIG. 6B (180 ° position), the bearing 12 rotated eccentrically is at the lower position (β). )

That is, one side of the eccentrically rotated bearing 12 is closer to the lower side in the center hole 13b of the disk 13, as opposed to FIG. 6A.

Accordingly, the disk 13 is rotated by the eccentric rotation of the bearing 12 to pressurize the lubricating member 15 'at a 180 ° position in the drawing to lower the center hole 13b of the disk 13 in the drawing. As a result, the lubrication member 15 'is exposed a lot, and the exposed lubrication member 15' is positioned in the lower groove 14b 'of the cycloid tooth 14a.

At this time, the lubricating member 15 located at the center position P1 of the groove 14b of the upper cycloid tooth 14a moves clockwise along the circumference of the cycloid tooth 14a at the 0 ° position by the disk 13 movement. Is located at P2.

In this state, when the boss 11 and the bearing 12 are rotated by 360 ° or more to reach the initial position as shown in Fig. 6C, the disk 13 is also moved and the lubrication member 15 is moved at the P2 position. As shown, the position reaches the P3 position.

That is, while the boss 11 and the bearing 12 are rotated once, the lubricating member 15 moves one pitch along the cycloid tooth type SC, which is a disc 13 per revolution of the bearing 12. Means that 1 pitch has moved.

The present invention deceleration device 10 operates as described above, when the rotating bearing 12 rotates in the center hole 13b of the disk 13, the disk 13 is rotated one pitch per rotation of the bearing 12. Is going to move, so this is the overall angle 360 ° Divided by 11, that is, 3601116.37 ° As a result, the disk 13 is made one revolution when the bearing 12 is rotated about 11 degrees.

When the disk 13 makes one rotation by 11 rotations of the bearing 12, the deceleration rotating member 14 also decelerates and rotates in one rotation by the frictional force of the lubricating member 15 slidingly transported by the cycloid tooth 14a. do.

Therefore, the disk 13 is decelerated and rotated to 11/1 with respect to the initial driving force of the input shaft IS, and the deceleration and rotation member 14 is also decelerated and rotated to 11/1 by the decelerating rotational force of the disk 13, thereby reducing the rotation. The rotation force of the output disk OD connected to the member 14 by the output side connector OT and the output shaft OS connected thereto is also transmitted to the driving mechanism K in a decelerated state.

In the cycloidal deceleration device 10, in the present exemplary embodiment, 11 grooves 14b and 14c of the cycloid tooth 14a formed in the deceleration rotating member 14 are provided, respectively, but each of 17 23, 29, 35, 43, 59, 71, 87, etc., of course, it is possible to perform the deceleration rotation of the drive mechanism as needed.

As described above, the present invention fixes the bearing to a boss having an eccentric shaft hole in the center, and installs a disk having a plurality of lubricating members on the outside of the bearing, and a deceleration rotating member having a plurality of cycloid teeth on the outside of the disk. By integrating the parts to reduce the rotational force according to the sliding feed, the power increase and deceleration movement smoothly according to the lubricity of the deceleration movement, the noise is reduced, the deceleration is easy, and the volume of the reduction device is reduced in size There is an effect that can be achieved.

Claims (4)

A bearing for eccentric rotation of the power of the input shaft IS transmitted from the driving means M, a disk connected to and driven by the bearing, and a lubrication member radially inserted into the disk are formed on the deceleration rotating member having a cycloid tooth type therein. In the reduction device to reduce the number of revolutions by sliding the feed to the output shaft (OS) via the output disk (OD), A plurality of bearings 12 integrally installed at an outer circumference of the boss 11 having the eccentric shaft hole 11a in which the input shaft IS is installed; A plurality of disks (13) installed outwardly of the bearing (12) and having a plurality of radially provided lubricating members (15); A ring (17) provided as a guide means between the upper ends of the lubricating member (15) to maintain the spacing of the lubricating member (15) of the double row and to distribute the axial load during rotation to minimize the load; A space ring 16 installed between the upper ends of the bearings 12 so as to form a space portion S having a predetermined interval between the plurality of bearings 12; Cycloidal reduction apparatus comprising a. The disk 13 and the space ring 16, the deceleration rotation member 14 and the ring 17 is fixed to a plurality of fixing members (T1) (T2), respectively. Cycloid reduction gear. The cycloid reduction device according to claim 1, wherein the cycloid tooth type (14a) of the deceleration rotation member (14) is composed of eleven grooves (14b) and protrusions (14c) having a uniform angular interval. 2. The cycloid reduction apparatus according to claim 1, wherein eight lubricating members are provided on the disk.