JP2006525016A - Equipment for winding / unwinding shades - Google Patents

Abstract

The device (1) for winding or unwinding the shade (11, 12, 33, 34) comprises a drive motor (3) with a drive shaft on which the transmission device can slide on the shaft. Each conduction device can operate a substantially horizontal tube (9, 10) that is movable as the shade (11, 12) is wound up and down in the vertical direction. Said conduction device (7, 8) has a sliding coupling which can be braked electrically and mechanically. When the transmission device (7, 8) is braked, the tube is stationary, but the drive shaft (4) continues to rotate to operate the tube without further braking. Can do. The tubes (7, 8) are stopped in any desired position, effectively winding or unwinding the associated shade (11, 12).

Description

  The present invention relates to a device for winding / unwinding two shades (11, 12, 33, 34) to or from each rotatable tube (9, 10, 32). The device includes a single drive motor (3), a conduction device coupling the drive motor and each of the tubes (9, 10, 32), and coupling between one of the tubes and the drive motor. I have.

  Such a device is disclosed in the international patent application PCT / NL02 / 00792, and it is possible to accurately adjust the start position and the end point position, and can be effective for a long time, i.e. without years of failure. It provides a function to wind up a certain shade.

  For this purpose, the device described in the document includes a drive motor fixed to a frame. A transmission device is coupled between the drive motor and the tube, which is replaceable and non-rotating with respect to the drive motor, but for transmitting rotational movement from the drive shaft to the tube.

  The resulting improvement is due to the fact that uses consisting of expensive tube motors that are easily damaged and difficult to install are no longer used. Instead, a simple motor is used that is firmly fixed to the frame. The existing transmission device means provide a drive shaft that is fixed vertically in the case of the shade moving in the vertical direction. The above-described conduction device moves up and down in the vertical direction along this drive shaft. This vertical movement is effected by rolling up or down the shade on the tube coupled to the conduction device. Preferably, the tube extends in a direction perpendicular to the drive shaft.

  The present invention aims to improve the device according to the present invention, which can be used more flexibly and can be controlled.

  This object is achieved by the coupling comprising an electrically actuated clutch, the clutch being switched between an uncoupled state and a coupled state by an actuating means for the clutch to control the actuating means. A control unit (55) having inputs for signals relating to the state of the shade, such as environmental parameters such as temperature, light, humidity, wind force and / or unwinding length.

  The shade can be automatically controlled to the desired mode by the control unit. Both internal and external conditions of the greenhouse can be considered.

  The device according to the invention can be used in any system, in which at least two shades are operated with a single motor. At least one control of the shade is made independent of the movement of the drive motor by at least one electrically actuated clutch. Preferably, each of the shades is provided with an electrical coupling that includes its own clutch.

  Preferably, the device according to the invention comprises a system as disclosed in the international patent application PCT / NL02 / 00792.

  The actuating means further comprises a memory for storing data relating to the position of the tube and / or the length of the unrolled shade depending on values corresponding to parameters of the environment and / or data from the state of the shade Means may be provided.

  Limiting the maximum torque to the transmission device during continuous rotation of the drive shaft by applying an effective clutch in the case of overload, ie an adjustable clutch, to the transmission device (adjustable maximum hoisting force This restriction can be made effective by adjustable stop means (start / end). In both cases, the clutch becomes active, resulting in a limited break in the moment of the roller tube associated with the drive shaft. By utilizing the feature of braking between the motor and the tube in conjunction with an adjustable slip clutch, the wound roll tube does not roll out in an uncontrolled state in the wound or intermediate position. Such a braking feature can be achieved, for example, by a worm gear.

  However, it is also possible for the drive motor to have braking performance, so that a relatively simple conduction may be sufficient for the conduction device.

  For example, it may not be closed further, or one of the three shaded shades will only partially close one after another, while the other shades appear to be virtually completely closed. It may be decided. In the construct according to the invention, it is possible that the plurality of shades are completely closed by periodically actuating the drive shaft so that any shade that is not completely closed is now completely closed. It is equally possible to be assured. This also applies when opening naturally.

  If the output shaft of the transmission device is fixed to the tube in which the shade is received, it is not necessary to guide or support the transmission device receiving rotational momentum. These forces are received by the tube. The conduction device can be guided independently in other cases along the frame or the greenhouse or the like.

  The device described above for winding and unwinding a plurality of shades can also be used in the case of so-called double shades, ie shades in which two shades are wound on top of each other from the top. One of these shades is secured to a fastener that is fixedly positioned above it in the manner described above, and the other shade has a free end with a heavy load. It is suspended so as to extend downward.

  Further, the device may include at least a further shade, the further shade including a further fixed upper clasp, a further rotating tube and a further conducting device, the rotating tube comprising: Within the same frame construction, it can be moved for receiving and unwinding shades, and the further transmission device is axially connected to the frame in order to conduct rotational movement from the drive shaft to the further tube. The further transmission device comprises a further clutch.

  According to the present invention, for example, it is possible to operate many devices positioned from one to the next with one drive shaft. According to the invention, several devices, which are positioned one after the other and differing in height and / or required torque, can also be operated simultaneously on one drive shaft. These devices may be located, for example, between horizontal trusses in a greenhouse. The above-described clutch and the operating means attached for the clutch, such as a stop, are exactly correct for each transmission device and consequently each shade without overload during rotation of the drive shaft. Can exercise. This means that a large number of tubes with shades can be operated with a single motor.

  Furthermore, at least one further drive shaft can be driven by a single motor.

  Not only a plurality of shades moving in the vertical direction but also a plurality of shades adapted in this way in the horizontal direction can be operated. In this case, the tube around which the shade is wound is kept taut by a counterweight means or another mechanism (spring). Not only a plurality of shades in the horizontal direction but also a plurality of shades in the vertical direction or a plurality of shades arranged at an inclination can be simultaneously operated by one motor.

  The present invention is also a method for operating a device according to any one of the preceding claims, which determines the value of environmental parameters such as temperature, light, humidity, wind power, time, etc. And, based on this value, selecting the length of the tube and / or the unrolled shade, and energizing the power to rotate the tube to unwind or unwind the shade; Energizing actuating means for causing slippage of the slip clutch when the desired position of the tube and / or the desired length of the unrolled shade is reached.

  The method also energizes other actuating means for sliding the further sliding clutch when the desired position of the further tube and / or the desired length of the unshaded further shade is reached. About.

  Even more particularly, the advantages of the present invention are not negligible whenever several shades are operated with a single motor. The plurality of shades can be operated in different ways with a single drive source. The operation can be realized, for example, based on energy savings. In the greenhouse, for example, there are a plurality of drive tubes at the lower position on the inside of the front. In such a case, the lower shade can remain unrolled to avoid energy loss in the outward direction. However, the plurality of shades positioned higher are fully or partially rolled up to transmit as much light as possible. Such an operation may depend on the measured external temperature, the time of day and the same kind pre-programmed in the control unit.

FIG. 1 is a schematic front view of a part of a greenhouse structure prepared in the equipment disclosed in the international patent application PCT / NL02 / 00792.
FIG. 2 shows details of the conduction device of the device shown in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a schematic view of a modification of the shade of the present invention.
FIG. 5 is an overview of a device according to the present invention.
FIG. 6 is a partial detail view of a cross-sectional view of a conductive device used in the device taken along line VI-VI in FIGS. 5 and 7.
7 is a front view of a partial cross-sectional view of the conduction device shown in FIG.
FIG. 8 is a side view of the transmission device.

  In FIG. 1, the assembly disclosed in the international patent application PCT / NL02 / 00792 is indicated generally by the reference numeral 1. The greenhouse frame is diagrammatically indicated by 2. It has been found by the present invention that the frame of the construct can be easily used separately, but is not necessary in the case of a greenhouse. A motor 3 is fixed to the frame of the structure. An auxiliary shaft 4 is present, and a drive shaft 6 extending in a substantially vertical direction is driven by a conducting device 5 making a right angle. The drive shaft 6 extends through the transmission devices 7 and 8, respectively, and the tubes 9 and 10 are driven to move the shades 11 and 12, respectively. There are stops 13, 14 which interact with the actuating means 25, 26 shown in FIG. 2, respectively. The shades 11 and 12 described above are indicated by solid lines on the right side of the vertical portion 28 in FIG. It will be appreciated that multiple shades may be present on the left side of the vertical portion, as shown in part.

  Details of the conduction devices 7 and 8 are shown in FIGS. 2 and 3, respectively. As can be seen from these drawings, the shaft 6 is provided with a single groove 15 along the entire length of the shaft. Said conduction device consists of a box 17 which can be slid by its guide 29 (see FIG. 3) along its own axis (axis 6) and the vertical T-section 28 of the frame 2 of the construction. Yes.

  As can be seen from FIG. 3, above the gear sleeve 16 provided with the sleeve 21, there is provided a key protrusion 18 which means that the sleeve 21 does not rotate with respect to the drive shaft 6 but can slide. It has been. The sleeve 21 comprises a sliding action clutch 23 which is fixed (adjustable) corresponding to the tooth system 24 on the gear sleeve 16. The spring 22 moves the tooth system 23 toward the tooth system 24. As a result, the rotational motion imparted to the sleeve 21 is transmitted to the gear sleeve 16. However, if the load is too great, the tooth systems 23, 24 will pass each other and slip will occur. The sliding motion of the spring can be controlled by adjusting the initial tension. It will be appreciated that slipping or breaking can be achieved in other ways. The clutch formed in this way is indicated at 20.

There are actuating pins 25, 26 acting on the tongue 40 of the pulley 27.
During the upward or downward movement, in its final position, the pins 25, 26 are in contact with the stops 13, 14, respectively. As a result, the stopper moves inward, and during rotation of the pulley 27, the tongue 40 comes into contact with the corresponding actuating pin, and as a result, the slip occurs. When the drive shaft rotates in the other direction, the pulley 27 rotates completely or substantially completely before the tongue-like portion 40 contacts the corresponding pin. However, thanks to this complete or almost complete rotation, the box 17 can be moved to some extent from the corresponding stop, where the corresponding actuating pin is moved back again, so that the movement can be completed as a result. .

  As can be seen from FIGS. 1 to 3, the drive shaft 6 rotates during the rotation of the motor 3. As a result, the tubes 9 and 10 rotate, and the shades 11 and 12 are wound up or down until they reach the stoppers 13 or 14, respectively. At that moment, the drive coupling between the drive shaft 6 and the pipes 9 and 10 is cut off. In other words, the end positions of the pipes 9 and 10 are not limited by the end of the rotation of the drive shaft 6, but are limited by the stoppers 13 and 14, respectively. This makes it possible to couple a number of conductive devices to the alternative drive shaft 6 instead. In addition, a safety mechanism is provided. When the overload is applied, the clutch 20 described above functions so as not to damage the plurality of shades or the drive unit. The clutch 20 also prevents further rotation of the tubes 9, 10 when the tube 9 stops in a position before the stop due to (adjustable) friction.

  FIG. 4 schematically shows a so-called double shade. There is a central tube 32 around which two shades are wound. This is indicated by reference numerals 33 and 34. The shade 33 extends upward and is fixed to the frame structure 2 like the shades 11 and 12. The shade 34 is provided with an end 35 provided with a heavy object, which is free, i.e. moves up or down along the guide by gravity if necessary. The tube 32 can be placed in place of the tube 9 or 10. In this way, the same effect can be obtained.

  An embodiment according to the present invention is shown in FIGS. Components corresponding to those in the embodiment of FIGS. 1 to 4 are given the same reference numerals. In this embodiment, the motor 3 is directly coupled to a conducting device 5 having a right angle and drives a substantially vertical drive shaft 6. Conductive devices 7 and 8 have each arm 9 that impacts the associated stop 14 at the lower position of tubes 9 and 10. To pivot the lever 42, the arm 40 can rotate with respect to the pin 41. The lever 42 has two lever portions 43 and 44 that can come into contact with one side of a plurality of cams 45 provided on the portion 46 of the sliding clutch 23. Said portion 46 is connected to the shaft stud through bevel gears 47, 48 and belt transmission devices 49, 50. The other part 51 of the slip clutch is coupled to the drive shaft 60 so as not to rotate.

  As soon as the arm contacts the stop 14, i.e. when it arrives at the lower position of the tubes 9, 10, one of the lever parts 43, 44 is lowered so that the nearest cam 45 is located in the opposing position. Move to. The drive shaft 6 and the portion 51 of the clutch continue to rotate as the portion 51 slides with respect to the other portion 46 of the slip clutch. The tubes 9, 10 are stopped and the shade is no longer wound or unwound.

  Such a slipping effect of the clutch is not only obtained by the arm 40 coming into contact with the stopper 14. The arm 40 can be actuated by two solenoids 52, 53 at other positions in the height direction of the tubes 9, 10. As shown in FIGS. 7 and 8, the solenoids 52, 53 operate a shaft 54 that extends between them and is itself coupled to the arm 40. By actuating one or both of the solenoids 52 and 53, the shaft 54 and the arm are inclined. By supplying an electrical signal to the solenoids 52, 53, the tubes 9, 10 can be stopped at any desired height position. The remaining tubes 9, 10 can continue to move and can be stopped depending on the control program. The tubes 9 and 10 are axially displaceable but are non-rotatably coupled to the shaft stud 56 to compensate for the differences in the unfolded portions.

  This control is controlled by the control unit 55 shown in FIG. A control signal is sent to the control unit 55 in relation to the external environment of the greenhouse or the external or internal state in which the device according to the invention is used. It can be related to temperature, humidity, wind direction, light, etc. Furthermore, a signal is also sent to the control unit 55 in relation to the position of the tubes 9, 10 and the position of the transmission devices, i.e. whether they are slid or not slid. Based on a program prepared in advance, the control unit can then control the motor 3 and can also send a signal to the solenoids 52, 53. In this way, the tubes 9, 10 can be adjusted to any desired height position independently of each other. In addition, the shades 11 and 12 can be rewound or rolled up to any desired height position independently of each other.

  With respect to the dependent invention, a single motor can be used to manipulate different tubes to wind / rewind the shade, while height variations and / or tolerances can be compensated. For example, several drive shafts can be coupled to the motor 3. In this way, considerable savings can be made, while a simple mechanical structure ensures a longer life than using a tube motor. Replacing a plurality of shades horizontally in the above specific example can be realized particularly easily by hanging them on a plurality of fences between the roof structures of a greenhouse. In a curved roof structure, many drive shafts 6 can be connected to each other by a cardan clutch, and a shade can be replaced between them.

  Although the present invention has been described above with reference to preferred embodiments, many variations that will immediately come to mind upon reading the above description and are obvious to those skilled in the art and are encompassed by the concepts of the appended claims. Those skilled in the art will understand that examples can be made. For example, the drive shaft and / or multiple shades may be fixed in a non-vertical position, alternatives in the prior art that can achieve similar resistance moments can be used, and can be used or otherwise There are many possibilities and alternatives for the design of the guide portion 28.

FIG. 2 is a schematic front view of a part of a greenhouse structure prepared in the equipment disclosed in the prior art international patent application PCT / NL02 / 00792. It is the detail of the conduction apparatus of the apparatus shown in FIG. It is the III-III sectional view taken on the line of FIG. It is the schematic of the modification of the shade of this invention. 1 is an overview of a device according to the present invention. It is a partial detail drawing of the cross-sectional view of the conduction apparatus used for the apparatus by the VI-VI line of FIG.5 and FIG.7. FIG. 7 is a front view of a partial cross-sectional view of the conduction device shown in FIG. 6. It is a side view of a transmission.

Claims (19)

A device (1) for winding / rewinding two shades (11, 12, 33, 34) to / from respective rotating tubes (9, 10, 32),
A single drive motor (3);
A conductive device providing a coupling between the drive motor and each of the tubes (9, 10, 32);
A coupling provided between one of the tubes and the drive motor, wherein the coupling comprises an electrically actuated clutch, the clutch being brought into a non-coupled state and a coupled state by an actuating means for the clutch; The coupling being switched; and
A control unit (55) having inputs for signals relating to the state of the shade, such as environmental parameters such as temperature, light, humidity, wind power and / or unwinding length, in order to control said actuating means;
Equipment with. The actuating means comprises memory means for storing data relating to the position of the tube and / or the length of unshaded shade depending on the environmental parameters and / or values associated with the state of the shade. 1. The device according to 1. The device according to claim 1 or 2, wherein the clutch (20) is a slip clutch and the actuating means is embodied to shift the slip clutch to a non-clutch state by sliding. . The device according to claim 3, wherein the slip clutch (20) can slide in any rotational direction. The sliding clutch (20) cooperates with at least two sliding clutch portions (46, 41), a sliding clutch portion (51) cooperating with the drive shaft, and the pipe (9, 10), and at least one stop. The other slip clutch portion (46) with a portion (45), the stop (45) being able to cooperate with the actuating means that allow the slip clutch to slide. The device according to claim 4. The actuating means comprises blocking means (43, 44) adapted to selectively cooperate with opposing sides of the stop (45) present in the circumferential direction of the slip clutch (20). The device according to claim 4 or 5. 7. A device according to claim 6, wherein the blocking means comprises a double lever having two interconnected lever portions (43, 44) that can engage both sides of the stop (45). Device according to any one of the preceding claims, wherein mechanical actuating means (14, 40) are provided for connecting / disengaging the clutch (20). The apparatus of claim 8, wherein the mechanical actuating means includes an arm (40) and a stop (14) coupled to a frame for actuating the arm (40). The apparatus according to any one of the preceding claims, wherein the actuating means includes at least a solenoid (52, 53), a servo motor having a screw shaft, and the like. 11. Apparatus according to claim 9 or 10, wherein at least one of the solenoids (52, 53) engages the arm (40). 12. Apparatus according to claim 11, wherein two solenoids (52, 53) operate the arm (40) in opposite directions. A frame structure (2) with an upper installed clasp, wherein the clasp extends to and from the clasp for winding / lowering a shade within the shade and the frame structure. The frame structure (2) for rotating tubes (9, 10, 32) that can be moved from, guide means for moving the tubes, and the drive motor (3) secured to the frame A drive shaft (6) that exists between the drive motor and the tube and is rotated by the drive motor, and the tube that is movable on the drive shaft in the axial direction with respect to the frame in a non-rotating manner. A coupled conduction device, wherein the conduction device includes the electrically actuated clutch for transmitting the rotational movement of the drive shaft to the tube; Equipment according to any one of the foregoing claims was e. At least a further shade, said further shade comprising a further fixed upper clasp and a further rotating tube (9, 10, 32), said rotating tube being within said frame construction, Further, coupled to the tube, which can be replaced with and from the fastener for receiving / dispensing shades and which is movable in the axial direction on the drive shaft in a non-rotating manner with respect to the frame. A device according to any one of the preceding claims, wherein the further conductive device comprises a further clutch for transmitting the rotational movement of the drive shaft to the tube. All said claims, wherein said transmission device has at least a rotatable shaft stud (56), said tubes (9, 10) being axially translatable but not coupled to said shaft stud. The device according to any one of the above. A method for operating a device according to any one of the preceding claims,
Determining the value of environmental parameters such as temperature, light, humidity, wind power, time, etc .;
Based on this value, selecting the length of the tube and / or unrolled shade;
Energizing the power to rotate the tube to rewind or wind up the shade;
Energizing actuating means for causing slippage of the slip clutch when a desired position of the tube and / or a desired length of unrolled shade is reached;
Including methods. In order to operate the device according to claim 14, the further sliding clutch is further slid when the desired position of the further tube and / or the desired length of the unshaded further shade is reached. The method of claim 16, comprising a plurality of steps of energizing the actuating means. 17. A method according to claim 16, wherein the time for applying energy to the different actuation means is different. In order to operate the transmission device according to claim 6 to 8, the desired position of the tube and / or the desired unrolled length of the shade are obtained, and then in the opposite direction 19. A method according to any one of claims 16 to 18, comprising the step of rotating a shaft (6) to remove the cooperation between the actuating means and the stop (45).

Images