JPH0432933Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a greenhouse curtain winding device suitable for opening and closing curtains for greenhouses, etc., and particularly for winding and unwinding thin film curtains around a curtain winding shaft.

Conventional technology A thin film curtain is attached directly to the curtain winding shaft.
If a curtain is used to support the curtain winding shaft and the curtain is wound, the curtain may stretch, tear, or wrinkle. It is being

Problems that the invention aims to solve: With this conventional device, the flat tape wraps around one point on the curtain winding shaft, so even if a fairly wide flat tape is used, the winding becomes stronger and thicker at that point, and the flat tape ends up wrapping around one point on the curtain winding shaft. Misalignment tends to occur in the upper and lower overlapping positions, which causes the curtain winding shaft to meander and the curtain to stretch, wrinkle, and tear.

Means for Solving the Problems Therefore, the present invention provides at least two pairs of flat tapes that are inclined in opposite directions with respect to the curtain winding shaft and spirally wound around the curtain winding shaft. An object of the present invention is to provide a greenhouse curtain winding device in which a thin film curtain is lightly installed above or below the flat tape.

Function In the present invention, since the curtain winding shaft is supported by at least two pairs of flat tapes that are inclined in opposite directions with respect to the shaft and spirally wound as the shaft rotates, first, Due to the hanging action of the flat tapes tilted in opposite directions, no load is applied to the curtain, and the curtain winding shaft does not meander at all in its longitudinal direction, resulting in an even and smooth curtain over the entire length of the shaft. It becomes possible to wind the
Furthermore, since the flat tape spirally wraps around the curtain winding shaft, the curtain can be wrapped in a wide and even manner along the length of the shaft, so even thin film curtains can be tightly tightened and wound around the shaft. This means that the curtains can be rolled up to about half the normal thickness, and when the curtains are rolled up, the shade inside the greenhouse will be reduced, helping the growth of crops.

Embodiment The present invention will be explained in detail based on the embodiment shown below. In FIG. 6 for winding and unwinding rotation. Reference numeral 3 denotes a fixed pipe for fixing the upper edge of the curtain, which is located at the upper edge of the curtain winding. Between the fixed pipe 3 and the winding shaft 1, flat tapes T, T1, T2, T3, ……
is stretched obliquely with respect to the curtain winding shaft 1. In the case of the example, the flat tape T is made of a relatively strong woven cloth material with a width of 80 mm and a thickness of about 1 mm.
The wires are stretched in a configuration based on a combination of at least two wires inclined in opposite directions, such as a W shape between T6 and T4, an X shape between T6 and T7, or a V shape with a gap between T1 and T4. In addition, if there is a gap like T1 and T4, there is no spiral winding part in the middle, so it is preferable to continue in a V shape or an X shape, and furthermore, in the case of a V shape or an inverted V shape, there is no spiral winding part between them. The more they intersect with each other in the vicinity of the shaft 1 and the fixed pipe 3, the more reliably the spiral winding range will be expanded. A curtain 2 made of a thin film or the like is usually lightly stretched over a flat tape T, and its upper and lower edges are fixed to a fixed pipe 3 and a winding shaft 1, respectively.

Also, since the tension on the flat tape T is generated by the load on the curtain winding shaft 1, if the curtain is sloped too loosely and cannot receive sufficient tension,
An appropriate load can be applied to the winding shaft 1 in combination with other tension mechanisms. Further, even when the drive motor 6 is located at the end of the curtain winding shaft 1 as shown in the first figure, the load of the drive motor 6 becomes uneven and may not act evenly on the winding shaft 1.

Therefore, in the embodiment of the present invention, FIGS.
As shown in the figure, a balancer structure is provided to reduce the load on the drive motor 6.

Reference numeral 5 denotes a support pipe for the winding shaft 1, which is provided along the side edge of the curtain at a position slightly higher than the curtain support pipe 4 and substantially parallel to the winding shaft 1, and is configured so that the winding shaft 1 can roll as necessary. It has been done. Reference numeral 6 denotes a drive motor for the winding shaft 1, which is integrally equipped with a guide roller box 7. The guide roller box 7 is provided with a horizontal guide roller 7a and a vertical guide roller 7b, and a guide member 10 is provided between these rollers 7a and 7b.
is penetrated. In other words, the rollers 7a, 7b
The drive motor 6 is guided to move relative to the guide member 10 and is supported by a guide roller box 7 that holds the guide member 10 therebetween. It is most preferable that the position of the guide roller box 7 corresponds to the center of gravity of the drive motor 6;
The position can be appropriately set depending on the weight of the winding shaft 1 and the weight of the winding shaft 1. The guide member 10 is supported so as to be movable up and down with reference to a position substantially parallel to the support pipes 4 and 5. In the case of the embodiment, the guide member 10 has its upper and lower ends 10a, 10b connected to a hanging member 11 having balancers 13a, 13b,
14. That is, the upper end portion 10a of the guide member 10 is connected to one end portion of a rope-shaped hanging member 11 that is stretched over pulleys 8 and 9 provided on the greenhouse frame material, and the other end portion of the hanging member 11 is connected to the upper end portion 10a of the guide member 10. The lower end portion 10b of the guide member 10 is configured to be suspended from a balancer 13a provided on the greenhouse frame member 13a to reduce its weight. A balancer 13b connected to one end of the hanging member 14 and provided at the other end of the hanging member 14.
It is constructed so that it can be hung together to reduce its weight. Further, in the case of the embodiment, the hanging member 11 is provided with a stopper 11a, and the guide member 1
When the weight of the upper end 10a of the 0 becomes lighter than the balancer 13a, it is configured so that it comes into contact with the pulley 8 and is not pulled in any further. As the support means for vertically movable the upper end portion 10a of the guide member 10, the hanging fitting 18a of the pulley 8 may be made expandable and compressible, and the weight can be reduced by imparting spring elasticity in the direction of contraction. In this case, the means for connecting the upper end portion 10a of the guide member and the hanging fitting 18a is as follows.
Various conventionally known means can be used, such as means for rotatably supporting the curtain by a fulcrum shaft parallel to the curtain winding shaft 1, or rotatably supporting by a universal joint such as a ball joint. Of course, it is also possible to suspend the hanging member 11 such as a hanging chain from the hanging fitting 18a as in the embodiment. Similarly, the lower end portion 10b of the pulley 12 can be suspended by a telescoping balancer having spring elasticity and corresponding to the weight of the guide member 10. As the balancers 13a and 13b,
For example, a wire 1 like an infinite spiral spring
The guide member 10 can also be balanced by using a tensioning means that tensions the guide members 1 and 14 with a substantially constant force relative to the amount of withdrawal. Also,
The guide member 10 may have a round shaft or a square shaft as long as the drive motor 6 is balanced. In the case of the embodiment, the guide member 10 consists of telescoping shafts 15 and 16, and can be extended or contracted as required. A guide roller box 7 is attached to the lower end portion 10b of the guide member 10.
A stopper 17 is provided which comes into contact with and stops. Further, the support pipe 5 of the winding shaft 1 is provided with an upper limit switch 19 and a lower limit switch 20 in order to regulate the upper limit for winding and the lower limit for unwinding the curtain 2.

The manner of use of the device of the present invention will be explained based on the embodiment illustrated above. In FIG. 3, the winding shaft 1 is stopped in contact with the terminal of the lower limit switch 20. When the rewind switch of the electric circuit is turned on, the drive motor 6 is activated, and the winding shaft 1 opens the curtain 2 while rotating in the winding direction. At this time, the drive motor 6 is guided to the guide member 10 via the guide roller box 7, and the weight of the guide member 10 is reduced by balancers 13a and 13b via wires 11 and 14 at the upper and lower ends thereof. . Therefore, the winding shaft 1 is relieved of the load of the drive motor 6 and rotates smoothly, opening the curtain portion parallel to the upper roof 23 in FIG. At this time, the winding shaft 1 is supported by obliquely paired flat tapes T1, T2, T3, . . . shown in the first figure, while being prevented from meandering in the longitudinal direction. The winding operation is performed while tightening the curtain in a spiral manner. Here, when the drive motor 6 further rotates in the winding direction, the curtain 2 is opened along the curtain support pipe 4 until it stops at a position where the winding shaft 1 contacts the terminal of the upper limit switch 19. In addition, 26 indicates the frame material of the greenhouse. On the other hand, move the curtain 2 from the open state to the third
When rewinding and closing the drive motor 6 to the closed state shown in the figure, the weight of the drive motor 6 is similarly reduced by the balancers 13a and 13b of the guide member 10 to enable smooth operation, as in the case of winding. In the case of this winding, when the upper limit switch 19 is in the upper position in FIG. 2, the hanging member 11 swings upward along the roof and the curtain 2
Therefore, by changing the height of the curtain on the opposite roof and installing the curtains with their upper edges overlapped, a curtain opening/closing device with no gap at the rolled-up end of the curtain 2 can be obtained. At this time, it goes without saying that the slender curtains created by the spirally wound flat tape will reduce the shade.

Effects As described above, in the device of the present invention, the curtain winding shaft is supported by at least two pairs of flat tapes that are inclined in opposite directions with respect to the shaft and are spirally wound as the shaft rotates. First, due to the hanging action of the flat tape tilted in the opposite direction, no load is applied to the curtain, and the curtain winding shaft does not meander at all in its longitudinal direction, and the entire length of the shaft is maintained. It is possible to wind the curtain evenly and smoothly, and since the flat tape is wound spirally around the curtain winding shaft, the curtain can be wound sequentially and widely along the length of the shaft with equal strength. Because of this, even thin film curtains can be tightly tightened to the shaft and rolled up, allowing the curtain to be rolled up to about half the normal thickness.When the winding is complete, the curtain reduces the shade inside the greenhouse, which has the effect of helping crops grow. be.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of the main parts showing one embodiment of the device of the present invention, Fig. 2 is a side view of the main parts showing one state of use, and Fig. 3 is a side view of the main parts showing another state of use. The side view and FIG. 4 are schematic plan views thereof. DESCRIPTION OF SYMBOLS 1... Winding shaft, 2... Curtain, 4... Curtain support pipe, 6... Drive motor, 7... Guide roller box, 10... Guide member, 11...
...hanging member, 13a, 13b...balancer,
14... Hanging member, T, T1, T2, T3,...
...Flat tape.

Claims (1)

[Scope of utility model registration request] Winding of greenhouse curtains, which has a drive motor that rotates a winding shaft, and the winding shaft is rotated by the drive motor to wind and unwind the curtain, the end of which is fixed to the winding shaft, around the winding shaft. In the device,
A fixed pipe that fixes the upper edge of the curtain, a winding shaft that fixes the lower edge of the curtain and winds and unwinds the curtain by rotation, a drive motor that rotates the winding shaft, and a curtain winding shaft. At least two winding shafts are arranged between the winding shaft of the curtain and the fixed pipe, which are inclined in opposite directions to each other and are spaced apart from each other at a predetermined interval, and are wound together with the curtain around the winding shaft.
A greenhouse curtain winding device comprising a pair of flat tapes and a balancer that applies a pulling force in a direction opposite to the gravity of the drive motor to reduce the gravity of the drive motor.