KR100870193B1 - Automatic opening and closing apparatus of greenhouse - Google Patents

Abstract

An automatic opening and closing apparatus of a greenhouse capable is provide to reduce driving noise by comprising the planetary gear assembly as helical gear, and improve durability by preventing moving of the planetary gear. The planetary gear assembly(20) is set up inside the housing(21) installed at one side of the motor(10) of a motor for the greenhouse. The rotation time the winding pipe the torque of the motor is decelerated by the motor. The internal gear(22) in which the pipe connection axis(20a) comprising the planetary gear assembly is integrally formed. The planetary gear(23) installed inside the internal gear. An external gear(24) is inserted and engaged in the interval giving with planetary gear. The helical gear comprises the motor gear formed in the axis of rotation of the motor.

Description

Automatic opening and closing apparatus of greenhouse

The present invention relates to a greenhouse automatic switchgear installed in a plastic house to open and close the opening and closing of the window to open and close the window. Specifically, the gears constituting the planetary gear assembly constituting the reducer are composed of helical gears to reduce noise. It relates to a practical automatic switchgear.

In addition, durability is improved by preventing the planetary gear from flowing, and it is composed of a micro switch and a switching means for operating the switch as a means for limiting the driving of the motor, and opening and closing the opening and closing vinyl by controlling the switching means from the outside. It relates to a greenhouse automatic switchgear that can easily adjust the amount of opening and closing of the opening and closing vinyl by adjusting the amount of rotation of the motor driven, that is, the winding pipe.

Vinyl houses are widely used as thermal insulation facilities for crop cultivation and winter cultivation.

These vinyl houses vary in size but are constructed by connecting a plurality of longitudinal pipes to each other to form a skeleton and covering a vinyl film on the framework.

The vinyl house constructed as above is equipped with ventilation facilities on both sides or ceiling for ventilation as well as temperature control according to the characteristics of the crops grown.

An example of a vinyl house equipped with such a ventilation facility is shown in FIG. 7.

As shown, the ventilation facility of the vinyl house opens a part of both sides of the vinyl covered in the plastic house in the longitudinal direction to form a window, and installs the opening and closing vinyl 300 in the window, and the opening and closing vinyl 300 It is configured to open and close the window by winding up or down on the winding pipe 400, and a means for rotating the winding pipe 400 is provided at one end of the winding pipe 400.

As a means for rotating the winding pipe 400 is configured manually, but in order to facilitate the opening and closing of the window recently, driving means such as the motor 100 is used.

In the conventional vinyl house opening and closing device, the opening and closing amount of the window is controlled by the amount of the opening and closing vinyl 300 wound on the winding pipe 400 by controlling the driving direction and driving time of the motor 100. As a motor for opening and closing, there is a patent application No. 10-2007-94810 "winding motor for vinyl house vinyl switch".

This winding motor is composed of a planetary gear assembly 200 coupled to the motor 100, as shown in FIG.

The measurement sensor 600 which installs a measurement unit 500 made of magnets on a fixing table installed on the disk of the planetary gear 220 constituting the planetary gear assembly constituting the opening and closing device, and detects the measurement unit 500. The opening and closing of the opening and closing vinyl is controlled by controlling the rotation of the winding pipe by controlling the driving of the motor 100 by the control unit 700 according to the measured amount of the measurement unit 500 measured by.

However, as the planetary gear assembly constituting the winding motor for the vinyl house vinyl switch configured as described above, a spur gear having a straight gear in the same direction as the axial direction is used. In the case of the planetary gear assembly configured as such a spur gear, There was a problem that a lot of noise occurs.

That is, the conventional automatic switchgear for greenhouses is composed of spur gears, and the gear teeth are easily in contact with each other, so that the gear teeth are easily worn and there is a noise, as well as a serious change in the rotational speed.

In addition, since the planetary gears of the planetary gear assembly flow in the axial direction inside the sun gear, not only a lot of noise occurs during operation, but a long time use, the reducer is damaged by the impact caused by such a flow, and there is a problem that durability is poor.

In addition, in order to control the driving of the motor by using a measurement unit composed of a magnet and a measurement sensor, a control means must be provided to process a signal sensed by the measurement sensor, and the structure is complicated to miniaturize such control means and integrate with the motor. There was a lot of hassle like getting out.

The present invention has been developed to solve the problems of the prior art as described above, by configuring the planetary gear assembly helical gear to reduce the noise generated when driving, as well as the long contact length that the gear teeth mesh with each other. It can be configured smaller than the planetary gear assembly made of the same size spur gears, so that the overall size of the switchgear can be made smaller, the number of gears engaged at a time and the gears are engaged in sequence, so that the vibrations are low and strong against overload An object of the present invention is to provide a practical automatic switchgear.

In addition, since the structure is simple and easy to manufacture, it is an object of the present invention to provide a greenhouse automatic switchgear that can be provided at a low cost.

In addition, an object of the present invention is to provide a greenhouse automatic switchgear with improved durability by preventing the planetary gears of the planetary gear assembly constituting the reducer from flowing.

In the greenhouse automatic opening and closing motor of the present invention for achieving the above object, the planetary automatic switchgear for installing a planetary gear assembly inside the housing installed on one side of the motor to reduce the rotational force of the motor to rotate the winding pipe, the planetary Internal toothed gears formed integrally with the pipe connecting shaft constituting the gear assembly, planetary gears installed inside the internal toothed gears, external toothed gears interposed between the planetary gears and engaged, and motor gears meshed with drive gears formed on the rotating shaft of the motor. The gear is composed of a helical gear.

The present invention has the effect of reducing noise during driving by configuring each gear constituting the planetary gear assembly helical gear.

That is, by constructing the planetary gear assembly as a helical gear, it is possible not only to reduce the noise generated when driving, but also to make it smaller than the planetary gear assembly made of spur gears of the same size due to the long contact length of the gear teeth engaged with each other. Since the overall size of the switchgear can be formed small, the number of gears engaged at a time and the gears are engaged in sequence, there is little vibration, there is an effect that can open and close the window smoothly even when overloaded.

In addition, by installing a thrust bearing on at least one side of the planetary gear constituting the planetary gear assembly to support the planetary gear, the planetary gear does not flow in the axial direction, thereby reducing the noise generated when the motor is driven. There is an effect to reduce the wear reduction of the sun gear.

In addition, by limiting the drive of the motor assembly to the micro-switch and the switching means for operating the switch has a simple configuration and the effect can be easy to manufacture.

Furthermore, by controlling the switching means for operating the microswitch, the amount of rotation of the motor, that is, the amount of rotation of the winding pipe, can be easily adjusted to control the amount of opening and closing of the vinyl.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the automatic switch for greenhouses according to the present invention will be described in detail.

1 is an exploded perspective view showing an example of a greenhouse automatic switchgear according to the present invention from one side, Figure 2 is an exploded perspective view showing another example of a greenhouse automatic switchgear according to the present invention from another side, Figure 3 is Figure 4 is a partial cross-sectional perspective view showing an example of a switching means for constituting the automatic switchgear for greenhouses according to the invention, Figure 4 is a front view for explaining the operation of the switching means constituting the automatic switchgear for greenhouses according to the present invention, Figure 5 As a side view for explaining the operation of the control lever in the switching means constituting the automatic switchgear for greenhouse according to the present invention, Figure 5a is a state in which the switching gear is coupled to the output gear, Figure 5b is the switching gear is separated from the output gear 6 is a front view for explaining a method of adjusting the switching area of the switching means constituting the automatic switchgear for greenhouses according to the present invention.

As shown, the automatic greenhouse switch according to the present invention has a planetary gear assembly 20 as a deceleration means for rotating the winding pipe by reducing the rotational force of the motor 10, and constitutes the planetary gear assembly 20. Each gear is characterized by a helical gear.

The helical gear constituting the gears 22, 23, 24, and 25 of the planetary gear assembly 20 is one of the gears that are commonly used, or the helical gear is installed by being used in a greenhouse automatic switch as in the present invention. The contact wire is longer than the in spur gear, so it can transmit a large force, and smoothly rotates, so that a noise can be obtained.

Gears constituting the planetary gear assembly 20 may include an internal tooth gear 22 having a pipe connecting shaft 20a integrally formed therein, a planetary gear 23 installed inside the internal tooth gear, and the planetary gears 23. And an external tooth gear 24 fitted and engaged, and a motor coupling gear 25 engaged with the drive gear 101 formed on the rotation shaft of the motor 10.

As described above, the motor coupling gear 25 meshed with the drive gear 101 formed on the rotating shaft of the motor is also formed as a helical gear, so that the drive gear 101 is also formed as a helical gear.

In addition, the automatic automatic switchgear for greenhouse of the present invention has a thrust bearing 29 for preventing the planetary gear 23 from flowing in the axial direction on at least one side of the planetary gear 23 constituting the planetary gear assembly 20. Is installed more.

1 and 2, the thrust bearing 29 is installed on both or one side of the planetary gear 23 to prevent the planetary gear 23 from flowing in the axial direction, It is installed between one side or both sides of the planetary gear 23 and the inner wall of the inner toothed gear 22 to prevent the gear from being pushed by the axial flow of the planetary gear 23 and the thrust generated when the helical gear is driven. In this way, the planetary gear 23 is smoothly driven without being shaken, thereby preventing the parts from being damaged by the impact noise or the shock generated by the planetary gear 23 shaking.

Such a thrust bearing 29 preferably uses a low friction force in order to reduce friction between the planetary gear 23 and the internal tooth gear 22, and thus it can be made using a bearing metal or the like.

Greenhouse automatic switchgear configured as above allows the user to visually check the amount of winding of the winding pipe to control the driving of the motor manually, but in order to control the driving of the moto manually, a lot of time is wasted automatically. It can be a means to control the driving.

As a means for automatically controlling the driving of the motor 10, the switches 40 and 40 'are provided.

Switching means 50 is provided as a means for operating the switches 40 and 40 '.

The reason for having two switches 40 and 40 'is to control both winding directions of the winding pipe, and the winding pipe is sufficiently rotated to drive the motor 10 in the open and closed state of the opening and closing vinyl. To stop it.

The switching means 50 is provided with a switch driving gear 20b on the pipe connecting shaft 20a and gears engaged with the switch driving gear 20b.

That is, two switches 40 and 40 'are further provided on one side of the motor 10 to control the power supplied to the motor, and the switching means 50 for operating the switches 40 and 40' is provided. It is coupled to the switch drive gear (20b), the switching means 50 and one or more reduction unit 30 for reducing the rotational speed of the switch drive gear (20b); In the middle of the inner surface of the cylindrical cylindrical shape, the internal gear 53a is formed to be engaged with the gear teeth of the gear constituting the deceleration section 30, and the switching levers 40a, which are exposed from the switches 40 and 40 'on the outer circumferential surface, Switching protrusions 53a and 53a 'for activating 40a' are formed, and the two switching gears 53 for activating the switching levers 40a and 40a 'are rotated by the rotational force decelerated by the reduction unit 30. 53 ') and; The internal gears 53a and 53a 'of the switching gear 53 are engaged with or separated from the gears of the reduction gear 30 by being coupled to the switching gears 53 and 53' and being elastically supported by the spring 55. Control levers 56, 56 '.

The switch drive gear 20b may be configured separately from the internal toothed gear 22 as shown in FIG. 1 or may be integrally formed on one side of the internal toothed gear 22 as shown in FIG.

That is, the switching drive gear 20b is formed at the end of the pipe connecting shaft 20a facing the internal tooth gear 22 and the fixing protrusion 22a is formed on the surface of the switch driving gear 20b and the internal tooth gear 22 facing each other. And fixing grooves 20c to be fitted and coupled to each other, or to form a switching drive gear 20b at an end facing the internal gear 22 of the pipe connecting shaft 20a, and the switch drive gear 20b to the internal gear ( 22) can be integrated by welding or brazing.

Looking at the operation of the switches 40, 40 'operated by the switching means 50 configured as described above,

When the motor 10 is driven and the winding pipe rotates, the opening and closing vinyl is wound around the winding pipe and ascends to open the window.

When the opening and closing vinyl is wound around the winding pipe and the window is fully opened, the switching lever 40a of any one of the two switches 40 and 40 'is switched to the switching gear 53 and 53'. The switch 40 is turned off by being operated by the switching projection 53a of any one of the switching gears 53.

Accordingly, the electricity supplied to the motor 10 is cut off and the motor is stopped to maintain the open window.

On the contrary, when the window is to be closed, the electricity supplied to the motor 10 is supplied through the switch 40 ', and the rotation direction is reversed from above. When the winding pipe is rotated down with the window sufficiently closed, the switch 40' Is switched by the switching projection 53a 'of the switching gear 53' so that the switch 40 'is turned off.

Of course, when the switches 40 and 40 'are turned on and off, the main switch (not shown) is automatically turned off and the power supplied to the motor is essentially cut off, and the switch 40' is turned on when the window is closed. The switch 40 is in an off state. In the window open state, the switch 40 'is turned off and the switch 40 is in an on state. When the main switch is turned on, power is supplied through the on switch. Adjusted.

The deceleration unit 30 of the automatic greenhouse switch configured as described above may be configured in multiple stages.

The reduction unit 30 is configured to reduce the rotational speed of the motor and to transmit the reduction gear to the switching gear 53. The reduction unit 30 includes a first reduction unit 31 and a second reduction unit 32.

The first reduction gear 22 has a first reduction gear (31a) having a diameter smaller than the switch drive gear (20b) provided on one side of the inner toothed gear 22 of the planetary gear assembly (20); And a second reduction gear 31c formed at an end of the shaft 31b extending from the first reduction gear 31a and having a diameter smaller than that of the first reduction gear 31a. ) Is a third reduction gear (32a) having a diameter larger than the second reduction gear (31c) constituting the first reduction gear (31) and meshed with the second reduction gear; A fourth reduction gear 32b integrally formed at one center of the third reduction gear 32a and having a diameter smaller than that of the third reduction gear; A fifth reduction gear 32c having a diameter larger than that of the fourth reduction gear 32b and engaged with the fourth reduction gear; A sixth reduction gear 32d integrally formed at the center of one side of the fifth reduction gear 32c and having a diameter smaller than that of the fifth reduction gear; A seventh reduction gear 32e having a diameter larger than that of the sixth reduction gear 32d and engaged with the sixth reduction gear; An eighth reduction gear 32f formed integrally with one center of the seventh reduction gear 32e and having a diameter smaller than that of the seventh reduction gear; Two ninth reduction gears 32g and 32g 'having a diameter larger than that of the eighth reduction gear 32f and engaged with the eighth reduction gear; Output gears 32h and 32h 'which are integrally formed at one center of the ninth reduction gears 32g and 32g', have a smaller diameter than the ninth reduction gears, and mesh with the switching gears 53 and 53 '. It consists of.

As described above, by configuring the large diameter reduction gear and the small diameter reduction gear alternately with each other, the rotation speed of the switch drive gear 20b is transmitted to the output gears 32h and 32h 'in a decelerated state.

The diameters of the reduction gears are relatively large and small as being meshed with each other, and such diameters are easily understood in the field to which the present invention belongs, and are not limited in size.

In addition, the greenhouse automatic switchgear of the present invention is configured so that the inner toothed gear 22 constituting the planetary gear assembly 20 can be detachably installed in the housing 21, so that the parts constituting the planetary gear assembly 20 are separated. It can be easily replaced and repaired when damaged.

When the internal tooth gear 22 is configured to be separated from the housing 21, as shown in FIG. 1, a coupling protrusion 22a is formed on an outer circumferential surface of the internal tooth gear 22, and the gear housing 21. Coupling groove (21a) is formed on the inner surface of the inner tooth gear 22 to be able to be coupled to the gear housing (21).

The switching means 50 can limit the number of times the winding pipe is rotated by controlling the time when the switch (40, 40 ') is operated as described above, by controlling the number of rotations of the guanggu pipe The amount of open pressure can be adjusted.

Thus, the adjustment lever 56 is provided as a means for adjusting the rotational speed of the winding pipe, that is, the number of rotations of the rotating shaft of the motor.

As shown in FIG. 3, the control lever 56 is elastically supported by the springs 55 and 55 ′ and protrudes outward as shown in FIG. 5A in a normal state. When the rotation speed is adjusted, as shown in FIG. 5B, the output gears 32h and 32h 'engaged with the internal gears 531 and 531' of the switching gear 53.53 'are pushed inward as shown in FIG. 5B. 531 and 531 ', and when the two gears 531, 531', 32h and 32h 'are separated and rotated to the left or right, the switching gear 53.53' rotates to switch gear 53. The distance between the switching projections 53a, 53a, formed on the outer circumferential surface of the switch, and the switching levers 40a, 40a 'of the switches 40, 40' is adjusted.

Support plates 30b and 30c for drivingly coupling the second deceleration portion 32 and the switching gears 53 and 53 'to the inside of the housing 30a constituting the switching means 50, and the cover 30d. ) Is further provided, and one of the support plates 30c or the cover 30d is further provided with a plurality of setting grooves 39 protruding on the circumference.

As described above, the support plates 30b and 30c are plates for supporting the gears constituting the switching means 50 to be in engagement with each other and to be installed in the housing 30a, and the setting groove 39 is illustrated in FIG. As shown in Fig. 1, when the adjustment lever 56 is operated as a plurality of grooves formed on the circumference, the setting protrusions 53c and 53c 'formed at the inner end of the adjustment lever are caught and transmitted to the user's hand. By checking the number of times the user takes, the control lever 56 is to allow the user to know the rotated distance.

In addition, the switching gears 53 and 53 'and the control levers 56 and 56' are configured to be separated from each other, so that the control levers of the switching gears 53 and 53 'are configured to be separated from each other. Tapered ends of the switching gears 53 and 53 'of the 56 and 56' are tapered so that they can be fitted to the ends of the cylindrical switching gears 53 and 53 ', and overlapping control levers 56 are fitted. , 56 ') and the fixing screws are tightened through the ends of the switching gears 53 and 53' so that the control levers 56 and 56 'are coupled to the switching gears 53 and 53'.

A plurality of display scales 301 are further formed at the edges of the lever holes 30e and 30e 'formed in the cover 30d, and indicator needles 56c and 56c' are further formed on the outer circumferential surface of the control lever 56. have.

By forming the scales 301 and 301 'and the indicator needles 56c and 56c', the switching projections 53a and 53a 'formed in the operating state of the control lever, that is, the switching gears 53 and 53' controlled by the control lever. ) Can be seen with the naked eye.

In addition, in the greenhouse automatic switchgear configured as described above, the gears engaged with each other may be smoothly driven when air is allowed to enter and exit the housing 30a constituting the switching means 50. Therefore, one side of the housing should be formed with a ventilation hole, but if the ventilation hole is formed, water may enter from the outside and the internal gears may be corroded. Therefore, a structure that allows air to enter and exit without entering water should be formed.

With this ventilation structure, as shown in FIG. 3, the control levers 56 and 56 ′ constitute double walls to form gaps 56 b and 56 b ′ between the two walls, and the control levers 56 and 56 ′ are formed. In the lever holes 30e and 30e 'of the cover 30d penetrating, waterproof wings 30f and 30f' fitted into the gaps 56b and 56b 'were formed.

With this configuration, as shown in FIGS. 5A and 5B, the waterproof wings 30f and 30f 'are fitted into the gaps 56b and 56b', and air is allowed to enter into the gap between the gap and the waterproof wing.

1 is an exploded perspective view showing an example of a greenhouse automatic switchgear according to the present invention from one side,

Figure 2 is an exploded perspective view showing another example of the automatic greenhouse switch according to the invention from the other side of Figure 1,

Figure 3 is a partial cross-sectional perspective view showing an example of the switching means constituting the automatic switchgear for greenhouses according to the present invention,

4 is a front view for explaining the operation of the switching means constituting the automatic switchgear for greenhouses according to the present invention,

Figure 5 is a side view for explaining the operation of the control lever in the switching means constituting the automatic switchgear for greenhouses according to the present invention,

  5a shows a state in which a switching gear is combined with an output gear,

  5b is a state in which the switching gear is separated from the output gear,

6 is a front view for explaining a method of adjusting the switching area of the switching means constituting the automatic switchgear for greenhouses according to the present invention,

7 is a block diagram of a typical vinyl house,

8 is a cross-sectional view showing an example of a motor constituting a conventional automatic switchgear for greenhouses.

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

10: motor

20: planetary gear assembly 20a: pipe connecting shaft

  21 housing 21a: coupling groove

  22: internal tooth gear 22a: engaging projection

  23: planetary gear 24: external gear gear 25: motor coupling gear

29: thrust bearing

30: reduction unit

  30a: housing 30b, 30c: support plate 30d: cover

  30e, 30e ': Lever hole 30f, 30f': Waterproof wing

  31: first reduction gear 31a: first reduction gear 31b: shaft

    31c: second reduction gear

  32: second reduction gear 32a: third reduction gear 32b: fourth reduction gear

    32c: 5th reduction gear 32d: 6th reduction gear 32e: 7th reduction gear

    32f: 8th reduction gear 32g, 32g ': 9th reduction gear 32h, 32h': output gear

40, 40 ': switch 40a, 40a': switching lever

50: switching means

  53, 53 ': switching gear 53a, 53a': switching protrusion

  531: internal gear 55: spring 56, 56 ': control lever

  56b, 56b ': gap 56c, 56c': indicator hand

Claims (8)

In the vinyl house opening and closing motor for installing a planetary gear assembly 20 in the housing 21 provided on one side of the motor 10 to reduce the rotational force of the motor to rotate the winding pipe, The inner toothed gear 22 having the pipe connecting shaft 20a constituting the planetary gear assembly 20 integrally formed therein, the planetary gear 23 installed inside the inner toothed gear, and the planetary gears 23 are engaged. The outer toothed gear 24 and the motor coupling gear 25 meshed with the drive gear 101 formed on the rotating shaft of the motor 10 are composed of a helical gear, A switch driving gear 20b is further installed on the pipe connecting shaft 20a, and two switches 40 and 40 'are provided on one side of the motor 10 to control the power supplied to the motor. Switching means 50 for operating the switches 40, 40 'is coupled with the switch drive gear 20b, The switching means (50) and at least one reduction unit 30 for reducing the rotational speed of the switch drive gear (20b); In the middle of the inner surface in the cylindrical cylindrical shape, the internal gear 531 engaged with the gear teeth of the gear constituting the deceleration portion 30 is formed and the switching levers 40a and 40a exposed from the switches 40 and 40 'on the outer circumferential surface. Switching protrusions 53a and 53a 'for activating') are formed to rotate with the rotational force decelerated by the reduction unit 30 to operate the two switching gears 53 and 53 for operating the switching levers 40a and 40a '. ')Wow ; The internal gears 53a and 53a 'of the switching gear 53 are engaged with or separated from the gears of the reduction gear 30 by being coupled to the switching gears 53 and 53' and being elastically supported by the spring 55. Including control levers 56 and 56 ', The control levers 56 and 56 'are double walls, and gaps 56b and 56b' are formed between the two walls, and the lever holes 30e of the cover 30d through which the control levers 56 and 56 'pass. , 30e ') is a greenhouse automatic switchgear characterized in that the waterproof wings (30f, 30f') is further formed to fit in the gap (56b, 56b '). The method of claim 1, At least one side of the planetary gear 23 constituting the planetary gear assembly 20, a thrust bearing 29 for preventing the planetary gear 23 from flowing in the axial direction is further installed for the greenhouse automatic switch. delete The method according to claim 1 or 2, The deceleration part 30 is composed of a first deceleration portion 31 and a second deceleration portion 32, The first deceleration part 31 is A first reduction gear 31a having a diameter smaller than that of the switch driving gear 20b; A second reduction gear 31c formed at an end of the shaft 31b extending from the first reduction gear 31a and having a diameter smaller than that of the first reduction gear 31a; The second deceleration part 32 A third reduction gear 32a having a diameter larger than that of the second reduction gear 31c constituting the first reduction portion 31 and engaged with the second reduction gear; A fourth reduction gear 32b integrally formed at one center of the third reduction gear 32a and having a diameter smaller than that of the third reduction gear; A fifth reduction gear 32c having a diameter larger than that of the fourth reduction gear 32b and engaged with the fourth reduction gear; A sixth reduction gear 32d integrally formed at the center of one side of the fifth reduction gear 32c and having a diameter smaller than that of the fifth reduction gear; A seventh reduction gear 32e having a diameter larger than that of the sixth reduction gear 32d and engaged with the sixth reduction gear; An eighth reduction gear 32f formed integrally with one center of the seventh reduction gear 32e and having a diameter smaller than that of the seventh reduction gear; Two ninth reduction gears 32g and 32g 'having a diameter larger than that of the eighth reduction gear 32f and engaged with the eighth reduction gear; Output gears 32h and 32h 'which are integrally formed at one center of the ninth reduction gears 32g and 32g', have a smaller diameter than the ninth reduction gears, and mesh with the switching gears 53 and 53 '. Greenhouse automatic switch, characterized in that consisting of. The method of claim 4, wherein The inner toothed gear 22 constituting the planetary gear assembly 20 has a coupling protrusion 22a formed on an outer circumferential surface thereof so as to be detachably fitted to the coupling groove 21a formed on the inner surface of the gear housing 21. Greenhouse automatic switchgear. The method of claim 5, wherein The control lever (56, 56 ') is a greenhouse automatic switchgear characterized in that the end of the switch gear (53, 53') is fixed by tightening the fixing screw in the state fitted to the end of the switching gear. delete The method of claim 6, The switch drive gear (20b) is a greenhouse automatic switchgear, characterized in that configured integrally with the internal toothed gear (22) or detachable.

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