KR200433879Y1 - Cyclo Reducer - Google Patents

Abstract

The present invention relates to a reduction gear in a cycle to obtain a low friction and high efficiency, the eccentric cam 11 is coupled to the drive shaft 55 of the motor 50, and the bearing 12 to the eccentric cam 11 A disk 13 having a plurality of gear teeth coupled to each other and having a plurality of gear teeth formed on an outer circumferential surface thereof, and a gear box engaged with the gear teeth of the disk 13 formed on an inner circumferential surface thereof to connect the disk 13 and the output shaft 45. A cyclone reducer having a cyclone deceleration section (10) composed of a plurality of connecting pins (14); The disk box of the cyclo deceleration section 10 is composed of a worm wheel 16 having a worm gear 16 'formed on an outer circumferential surface thereof, and a worm 21' driven by a worm gear 16 'of the worm wheel 16. ) Is provided with a worm shaft 21 for rotating the worm wheel 13 when the motor 50 is not driven, the manual drive unit 20 consisting of a handle 22 coupled to the worm shaft 21 Characterized in that it comprises a.

Therefore, the device can be operated even if the motor is not operated, and manual driving is facilitated because no excessive force is required for manual driving.

Cyclo reducer, overload, eccentric cam, disc, worm wheel, worm shaft, manual drive

Description

Cyclo Reducer {Cyclo Reducer}

1 is a configuration diagram showing a cyclo reducer according to the present invention.

2 is a cross-sectional view showing the internal configuration of the cyclo reducer of the present invention.

3 is a sectional view taken along the line “A-A” of FIG. 2.

<Description of the symbols for the main parts of the drawings>

10: deceleration section 11: first eccentric cam

12: bearing 13: disc

14: connecting pin 15: connecting shaft

16: Worm wheel (disc box) 16 ': Worm gear

20: manual drive 21: worm shaft

21 ': Worm 22: Handle

30: overload breaker 31: limit switch

32: arm 35: torque setting section

36: spring 37: auxiliary case

38: screw jaw 40: second cycle reduction unit

41: eccentric cam 42: bearing

43: disk 44: connecting pin

45: output shaft 46: disk box

50: motor 55: drive shaft

100: case

The present invention relates to a reducer in one cycle to achieve low friction and high efficiency, and more particularly to a reducer in one cycle to enable manual driving even when the motor is not operated and to prevent damage to the motor due to overload.

In general, a speed reducer is a device for reducing speed, and is used to convert a rotational output of a high speed and low torque motor into a low speed and high torque.

Gear reducers are most often used to reduce gears, and gear reducers are classified into gear type reducers, worm reducers, and planetary gear reducers. Most of these gear type reducers use involute gears, but when using involute gears, wear does not occur smoothly and the load is concentrated on a few gears.

Accordingly, a reduction gear that combines an internal planetary gear mechanism and a cycloid gear was developed, which is called a cyclo reducer.

The cyclo reducer can make the reduction ratio very large, which makes the machine small and light. In other words, 1/6 ~ 1/87 can be decelerated even in the first stage deceleration, and the device can be manufactured with a large reduction ratio of 1/121 to one billionth when connecting two or more stages.

In addition, since the shape of the gear is formed in a continuous curve of the cycloid type to be brought into contact with the cloud, the friction is small and the number of teeth to be engaged at the same time, because the number of teeth is strong and strong in impact, there is an excellent durability. In particular, the main parts of the reduction mechanism part are made of special alloy steel to perform precision grinding, so the wear life and wear resistance are excellent, and the life is long.

In addition, since the gear and the roller always come in contact with the roller, power loss due to friction or the like is small, and high efficiency can be obtained. That is, the average efficiency is 90% or more in the case of the first stage, and high efficiency of 80% or more in the case of the two stage.

In addition, since the gear ratio is high and the continuous rolling contact of the gear is easy to operate, the power transmission part is vibrated and precision because of the precision tooth type grinding. Its simple structure makes it easy to disassemble and assemble, and its input and output are on the same line for easy handling.

However, most of the cyclone reduction gears are designed for electric driving using a motor, and thus, when the motor does not operate due to a power failure or damage to the motor, there is a problem that device operation is impossible.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide a speed reducer as a cycle capable of manual driving as well as electric drive by operating the device manually when the motor does not operate.

It is also an object of the present invention to provide a reducer in one cycle so as not to require excessive force during manual driving.

In addition, the present invention has an object to provide a reducer in one cycle to protect the motor by automatically shutting off the power when overloaded.

According to the cyclo reducer of the present invention for achieving the above object, a disk having an eccentric cam coupled to the drive shaft of the motor, the eccentric cam via a bearing and a plurality of gear teeth formed on the outer peripheral surface, the gear tooth of the disk A cyclone reducer having a cyclone deceleration section comprising a disk box having gear teeth engaged with the inner peripheral surface, and a plurality of connecting pins connecting the disk and the output shaft. The disk box of the cyclo deceleration part is made up of a worm wheel having a worm gear formed on an outer circumferential surface thereof, and a worm shaft provided with a worm geared to the worm gear of the worm wheel to rotate the worm wheel when the motor is not driven, and the worm It characterized in that it comprises a manual drive consisting of a handle coupled to the shaft.

In addition, according to the cyclo reducer of the present invention, the manual drive unit is provided with an overload cut-off unit for cutting off the power supplied to the motor when the overload, the overload cut-off unit is provided on the limit switch and the worm shaft installed in the case And a arm for operating the limit switch during linear movement of the worm shaft, and a torque setting unit installed at an end of the worm shaft to set an operating torque.

In addition, according to the cyclo reducer of the present invention, the torque setting unit, the spring extrapolated to the end of the worm shaft, the auxiliary case is installed on the casing so that the spring is located inside and the threaded end is formed on the end side, and It is characterized in that it comprises a screw jaw which is screwed from the end of the auxiliary case to adjust the tension of the spring.

And, according to the cyclo reducer of the present invention, it is characterized in that the second cyclo reducer is further installed between the cyclo reducer and the output shaft.

Hereinafter, an embodiment of a cyclo reducer according to the present invention will be described with reference to the accompanying drawings.

1 is a configuration diagram showing a cyclo reducer according to the present invention, Figure 2 is a cross-sectional view showing the internal configuration of the cyclo reducer of the present invention, Figure 3 is a cross-sectional view "A-A" cross-sectional view of FIG.

Cyclo reducer according to the present invention, the motor 50 for generating power, the first cycle deceleration unit 10 and the first cycle deceleration coupled to the drive shaft 55 of the motor 50, the first cycle deceleration The output unit of the unit 10 is coupled to the deceleration unit 40 in the second cycle of rotating the output shaft 45 by the second deceleration, and the motor 50 is stopped by being connected to the deceleration unit 10 in the first cycle. When the output shaft 45 includes a manual drive unit 20 for rotating.

Here, the first cyclone reduction unit 10 and the second cyclone reduction unit 40, the eccentric cam (11) (41) coupled to the input unit, and the bearing 12 to the eccentric cam (11) 41 Disks 13 and 43, which are coupled via 42 and have a plurality of gear teeth formed on the outer circumferential surface, and gear teeth engaged to the gear teeth of the disks 13 and 43, are formed on the inner circumferential surface. And a plurality of connecting pins 14 and 44 connecting the disks 13 and 43 to the output unit.

At this time, the drive shaft 55 of the motor 50 acts as an input part of the deceleration part 45 in the first cycle, and an output part of the deceleration part 10 in the first cycle deceleration part 40 is input. It becomes the connecting shaft 15 acting negatively. In addition, the disc box 16 of the deceleration section 10 of the first cycle is composed of a worm wheel 16 having a worm gear 16 ′ formed on an outer circumferential surface thereof, and the disc box of the deceleration section 40 of the second cycle. 46 is made of a structure fixed to the case 100.

In addition, the manual drive unit 20 includes a worm 21 ′ driven by the worm gear 16 ′ of the worm wheel 16 and the worm wheel 13 when the motor 50 is not driven. It consists of a worm shaft 21 for rotating the handle 22 is coupled to the worm shaft 21, and an overload blocker 30 for shutting off the power supplied to the motor 50 when the overload.

In this case, the overload blocking unit 30 is installed on the limit switch 31 installed in the case 100 and the worm shaft 21 to operate the limit switch 31 during linear movement of the worm shaft 21. The arm 32 and the torque setting unit 35 is installed at the end of the worm shaft 21 to set the operating torque. Here, the torque setting unit 35 is a spring 36 which is extrapolated to the end of the worm shaft 21, and is installed on the case 100 so that the spring 36 is located therein, and the screw portion on the end side It is provided with a secondary case 37 and a screw jaw 38 is screwed from the end of the auxiliary case 37 to adjust the tension of the spring (36).

Cyclo reducer of the present invention configured as described above, as well as electric operation is possible manual operation and stop the operation during overload.

The drive shaft 55 is rotated according to the driving of the motor 50, and the bearing 12 and the disc 13 of the reduction unit 10 are driven around the drive shaft 55 in the first cycle eccentrically installed on the drive shaft 55. It will be idle. At this time, since the disk 13 is engaged with the inner circumferential surface of the worm wheel 16, the disk 13 is equal to the drive shaft 55 by the difference between the dimensions of the worm wheel 16 and the dimensions of the disk 13. It will rotate in the opposite direction. The magnetic force of the disk 13 is transmitted to the connecting shaft 15 through the plurality of connecting pins 14 to rotate the connecting shaft 15.

In this case, when the dimension of the disk 13 is N1 and the dimension of the worm wheel 16 is M1, the reduction ratio of the reduction unit 10 in the first cycle is expressed by Equation 1 below.

In addition, the bearing 42 and the disc 43 of the reduction unit 40 are revolved about the connecting shaft 15 in the second cycle provided on the connecting shaft 15. At this time, since the disk 43 is engaged with the inner circumferential surface of the disk box 46, the disk 43 is connected to the connecting shaft 15 by the difference between the dimensions of the disk box 46 and the dimensions of the disk 43. Rotate in the opposite direction. The magnetic force of the disk 43 is transmitted to the output shaft 45 through the plurality of connecting pins 44 to rotate the output shaft 45. Therefore, the output shaft 45 is rotated in the same direction as the drive shaft 55 of the motor 50.

In this case, when the dimension of the disk 43 is N2 and the dimension of the disk box 46 is M2, the reduction ratio of the speed reduction unit 40 in the second cycle is expressed by Equation 2 below.

Therefore, the overall reduction ratio by the cyclo reducer is expressed by Equation 3 below.

If the device cannot be operated because the motor 50 is impossible to operate due to a power failure or damage to the motor 50, the output shaft 45 is rotated by using the manual driving unit 20.

That is, when the worm shaft 21 is rotated using the handle 22, the worm wheel 16 to which the worm 21 ′ of the worm shaft 21 is coupled is rotated, and the worm wheel 16 of the worm wheel 16 is rotated. As the disk is rotated, the disk 13 engaged with it is rotated. At this time, since the worm wheel 16 rotates by one pitch when the worm shaft 21 rotates once, a primary deceleration is performed between the worm shaft 21 and the worm wheel 16. On the other hand, the rotational force of the disk 13 is transmitted to the deceleration unit 40 in the second cycle through a plurality of connecting shafts 14, the output shaft after the second deceleration is made in the deceleration unit 40 in the second cycle ( 45).

On the other hand, since the second deceleration process in the second cycle reduction unit 40 is the same as in the electric drive, a detailed description thereof will be omitted. At this time, since the rotational force of the handle 22 is decelerated twice, the torque for rotating the handle 22 does not have to be very large.

On the other hand, when the device is electrically driven by using the motor 50, when the overload occurs, the overload cut-off unit 30 of the manual drive unit 20 is operated to stop the motor 50 by the motor 50 due to the overload ) To prevent damage.

First, the tension of the spring 36 is adjusted according to the rated tangential force generated at the contact surface of the worm 21 'and the outer circumferential surface of the worm wheel 16 of the worm shaft 21 according to the appropriate load. That is, the operating torque is set by rotating the screw jaw 38 to adjust the tension of the spring 36.

In this state, the electric drive is performed using the motor 50, and the reaction force acts on the tooth surface of the worm 21 'of the worm shaft 21 when the motor is driven over the rated tangential force during the electric drive, that is, the overload. . Due to this reaction, the worm shaft 21 is finely moved in the distal direction, and the arm 32 operates the limit switch 31 to cut off the power according to the movement of the worm shaft 21. Is stopped.

The above has described the cyclo reducer having a two-stage structure. The cyclone reducer may be configured in multiple stages or may be provided in only one stage depending on the required reduction ratio.

These cycle reducers are mainly applied to vibration damper installations or general power transmission devices. In addition, the manual drive unit 20 of the present invention is applicable to the planetary gear type reducer provided with internal gear.

In the above description of the preferred embodiment of the present invention, the scope of the present invention is not limited only to this specific embodiment, those skilled in the art within the scope of the utility model registration claims of the present invention Changes may be made as appropriate.

According to the cyclo reducer according to the present invention, a manual driving unit including a handle is included to operate an apparatus even when a motor is not operated, and manual driving is easily performed because an excessive force is not required during manual driving.

In addition, according to the cycle reducer of the present invention, by operating manually during installation to eliminate the interference with the peripheral device has the effect that can be quickly and accurately installed.

In addition, according to the cyclo reducer of the present invention, by using the mechanical structure of the manual drive unit there is an effect that can automatically protect the motor by cutting off the power supplied to the motor when overloaded.

In addition, according to the cycle reducer of the present invention, it is possible to easily set the operating torque on which the overload judgment is based.

Claims (5)

An eccentric cam 11 coupled to the drive shaft 55 of the motor 50, a disk 13 coupled to the eccentric cam 11 via a bearing 12, and having a plurality of gear teeth formed on an outer circumferential surface thereof, and the disk A cycle having a gear box engaged with the gear tooth of (13) formed on an inner circumferential surface thereof, and a plurality of connecting pins 14 connecting the disk 13 and the output shaft 45 with a deceleration part 10; In the reducer; The disk box of the cyclo deceleration unit 10 is made of a worm wheel 16, the worm gear 16 'is formed on the outer peripheral surface, A worm shaft 21 which is provided on the worm gear 16 'of the worm wheel 16 and rotates the worm wheel 13 when the motor 50 is not driven; And a manual drive unit (20) consisting of a handle (22) coupled to the worm shaft (21). The method of claim 1, The manual driving unit (20) is a cyclo reducer, characterized in that it comprises an overload interrupter (30) for interrupting the power supplied to the motor (50) when overloaded. The method of claim 2, The overload blocking unit 30 is a limit switch 31 installed in the case 100 and the arm installed in the worm shaft 21 to operate the limit switch 31 in the linear movement of the worm shaft 21 And a torque setting unit (35) installed at an end of the worm shaft (21) to set an operating torque. The method of claim 3, The torque setting unit 35 may include a spring 36 which is extrapolated to the end of the worm shaft 21, and is installed on the case 100 so that the spring 36 is located therein, and a threaded part is formed on the end side. And an auxiliary case (37) and a screw jaw (38) screwed from the end of the auxiliary case (37) to adjust the tension of the spring (36). The method of claim 1, And a second cyclone reduction unit (40) is further provided between the cycle reduction unit (10) and the output shaft (45).

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