JPS61271927A - Curtain wind-up and opening/closing apparatus of greenhouse - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a curtain winding/closing device for winding up, unwinding, and opening/closing curtains in a greenhouse or the like.

Conventional technology A curtain winding/closing device that winds and unwinds curtains in a greenhouse or the like on a winding shaft to open and close the curtains has conventionally moved while being guided by a guide member provided at the end of the winding shaft along the curtain opening/closing direction. It is known that the motor is equipped with a drive motor that transmits the drive motor, or a rotary drive mechanism that receives drive transmission from the drive motor.

Problems to be Solved by the Invention The length of the curtain winding shaft depends on the size of the greenhouse, but
It often reaches 0-60m.

In this case, there is a problem in that the weight of the drive motor provided at the end of the winding shaft impedes winding.

In other words, when the curtain is close to horizontal, the winding shaft rotates while being bent by the weight of the drive motor, and when the curtain is close to vertical, the part of the winding shaft near the drive motor is wound more tightly, so the curtain The amount of winding becomes uneven in the longitudinal direction of the winding shaft.

Conventional technology in which a take-up shaft is driven by a rotary drive mechanism that receives drive transmission from a drive motor attempts to solve this problem by transferring the weight of a portion of the drive motor to the weight of the rotary drive mechanism. The weight of the rotational drive mechanism is also applied to the end of the winding shaft, and there is a problem in that a complicated rotation transmission mechanism is required.

Means for Solving the Problems Therefore, the present invention provides a guide member such as a drive motor or its rotational drive mechanism so as to be swingable up and down centering on the position of the upper end in a state parallel to the curtain shaft. In addition, the present invention provides a curtain winding/closing device for a greenhouse, etc., in which the guide member is provided with a balancer for reducing the amount of fi of the motor, etc., thereby substantially reducing the weight of the motor, etc.

Function Conventional guide members are fixedly installed along the curtain laying direction, whereas the curtain winding shaft becomes thicker and thinner as the curtain is rolled up, so the guide member can be adjusted to match the curtain winding amount. It was quite difficult to get them to obey, but
In the present invention, since the guide member is provided to be able to freely swing up and down about the position of the upper end, the height of the drive motor etc. is guided faithfully according to the amount of winding of the winding shaft. Moreover, since the weight of the drive motor etc. is reduced by lifting the guide member with a balancer, no deflection or unbalanced load is applied to the winding shaft, so that the curtain can be evenly wound and unwound on the winding shaft. In addition, since the drive motor etc. moves as the curtain is opened and closed, it is difficult to reduce the weight by holding it directly, but it is possible to reduce the weight by lifting the guide member that guides the drive motor etc. is relatively simple, and in particular, since the drive motor and its guide member are located at the end of the curtain winding shaft, it can be swung without affecting the opening/closing area of the curtain, and the balancer can be moved. It is possible to provide

Embodiment The arrangement of the main parts of the apparatus of the present invention is approximately the same as that of the conventional apparatus, as schematically shown in FIG. In the figure, reference numeral 1 denotes a curtain winding shaft, which is installed in the longitudinal direction corresponding to the installation area of the curtain. Reference numeral 2 denotes a curtain that is wound around a winding shaft 1, and in the embodiment, its upper edge is fixed to a greenhouse structure or the like by a fixing pipe 3. Curtain support pipes 4 support the lower side of the curtain 2, and are provided in the required number at predetermined intervals along the longitudinal direction of the winding shaft 1.

5 is a curtain support pipe 4 along the side edge of the curtain.
A support pipe for the winding shaft 1 is provided at a slightly higher position and approximately parallel to the winding shaft 1, so that the winding shaft 1 can be moved as necessary. 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 b, and a guide member 10 according to the present invention passes between these rollers 7a and 7b. Guide roller box 7
It is most preferable that the position coincides with the center of gravity of the drive motor 6, but the position can be set appropriately depending on the weight of the curtain 2 and the winding shaft 1. The guide member 10 is provided on the greenhouse frame member 8' so that its upper end 10a can swing freely in a position substantially parallel to the support pipe 4.5. As the swingable support means, the upper end of the guide member 10 is swingably supported on a fulcrum shaft parallel to the curtain winding axis l, or the upper end of the guide member is supported by a universal joint such as a ball joint. Although various conventionally known means such as swingably supporting means can be used, in the case of the embodiment, the greenhouse frame member 8 is suspended by a hanging member 1) such as a hanging chain. Similarly, the lower end portion 10b of the drive motor 10 is suspended via a pulley 12 to a wire 14 of a weight type balancer 13 corresponding to the weight of the drive motor 60. As the balancer 13, for example, a wire 14 such as a constant spring spring is used.
It is possible to use a means of pulling with a force that is approximately constant with respect to the amount of withdrawal. Further, the guide member 10 may have a round shaft or a square shaft as long as the drive motor 6 is balanced.

In the embodiment, the guide member 10 has telescoping shafts 15 and 1
6, and expands and contracts as needed. A stopper 17 is provided at the lower end 10a of the guide member 10 so that the guide roller box 7 comes into contact with the stopper 17. Reference numeral 18 denotes a hanging fitting for attaching the pulley 12 to the greenhouse structural material.

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 mode of use of the device of the present invention will be explained based on the embodiment illustrated above. In FIG. 1, the winding shaft 1 is stopped in contact with the terminal of the upper limit switch 19, and the explanation will be omitted here. When the rewind switch of the electric circuit is turned on, the drive motor 6 is activated, and the take-up shaft 1 closes the curtain 2 while rotating in the rewind direction. At this time,
The drive motor 6 is guided to a guide member 10 via a guide roller box 7, and its weight is reduced by a balancer 13 via a wire 14 at the lower end of the guide member 10. Therefore, the load of the drive motor 6 is reduced, and the winding shaft 1 rotates smoothly while closing the curtain portion parallel to the shed machine in FIG. 2. In the state shown in FIG. 2, the guide roller box 7 is in contact with a stopper 17 provided at the lower end of the guide member 10. Here, when the drive motor 6 further rotates in the rewinding direction, the guide member 1
0, as shown in the third figure, the wire 14 is extended downward, and the curtain 2 is closed along the curtain support pipe 4 to the side wall of the greenhouse while keeping the weight balance with the balancer 13. The winding shaft 1 stops at the position where it contacts the terminal of the lower limit switch 20. At this time, even if the curtain 2 has a steep slope, the weight of the drive motor 6 is reduced by the balancer 13, and no unreasonable load is applied to the curtain 2, so that the curtain 2 is smoothly rewound. In the conventional device, when the curtain 2 moves from a part parallel to the roof to a steeply sloped part parallel to the side wall, there is a risk that the curtain 2 suddenly receives the weight of the drive motor 6 and suddenly falls. Furthermore, when moving from FIG. 2 to FIG. Accordingly, the upper end portion 10a of the hanging member 1) swings in the moving direction, so there is an advantage that the drive motor 6 can be guided considerably downward even if the length of the guide member 10 is not variable. However, when the hanging member 1) is fixed like a fixed fulcrum shaft joint, the guide member 10 is constructed with an extendable shaft 15, 16, and the guide member 10 is configured to extend and contract as necessary as the drive motor 6 moves. It is preferable to configure it so that. In this case, care must be taken to ensure that there is no bias in the tensioning direction of the wire 14 of the balancer 13 with respect to the guide member 10.
As shown in FIG. 5, the lower end 10b of 0 is reliably guided along the greenhouse side wall by a swinging end guide member 21 made of a sliding wire, rail, pipe, etc. stretched along the greenhouse side wall. With this configuration, the direction in which the wire 14 is pulled can be set relatively freely, and it is of course possible to change the design in the field. In FIG. 5, 22 is the guide member 1
This is a connecting hole provided at the lower end portion 10b of the guide member 21 so as to engage with the guide member 21. Furthermore, even if the swinging fulcrum is fixed and the guide member 10 does not expand or contract, if the length of the guide member 10 is sufficient, the linear guide member 21 can be used; The guide member 21 may be provided in an arc shape. In addition, 23 is the roof of the greenhouse, 24
indicates the side wall of the greenhouse. On the other hand, when the curtain 2 is rolled up and opened from the closed state shown in FIG. 3 to the state shown in FIG. 1 via FIG. The point that makes it possible is
This is similar to the case of rewinding.

In addition, in the case of this winding, the upper limit switch 1 is
When 9 is located higher up, the hanging member 1) swings upwards along the roof, contrary to the above, and can extend the winding range of the curtain 2, thus changing the height of the curtain on the opposite roof. By overlapping the upper end edges of the curtains, a curtain opening/closing device with no gap at the rolled up end of the curtain 2 can be obtained.

Effects As described above, the device of the present invention is provided with a winding drive motor or its drive transmission mechanism at the end of the winding shaft that winds and unwinds the curtain, and a guide member such as the motor is arranged parallel to the curtain guide shaft. It has the structure of a curtain winding/closing device for a greenhouse, etc., which is provided so as to be swingable up and down about the position of the upper end in a state of The guide member of the device is fixedly provided along the curtain laying direction, whereas the curtain winding shaft becomes thicker or thinner as the curtain is wound, so the guide member can be set to follow the curtain winding amount faithfully. However, in the present invention,
Since the guide member is provided so as to be able to freely swing up and down about the position of the upper end, it faithfully guides the height of the drive motor etc. according to the amount of winding on the winding shaft. Moreover, since the weight of the drive motor etc. is reduced by supporting the guide member with a balancer, the curtain can be evenly wound and unwound on the winding shaft without bending or unbalanced load being applied to the curtain winding shaft. In addition, since the drive motor, etc. moves as the curtain is opened and closed, it is difficult to reduce the amount of vi by holding it directly, but it is difficult to do so by lifting the guide member that guides the drive motor, etc. It is relatively easy to reduce the weight of the curtain, and in particular, since the drive motor and its guide member are located at the end of the curtain winding shaft, the curtain can be swung without affecting the opening/closing area of the curtain. It is also possible to provide a balancer, which has great effects.

[Brief explanation of drawings]

Fig. 1 is a side view of the main parts of an embodiment of the present invention device showing one usage state, Fig. 2 is a side view of the same main parts showing another usage state, and Fig. 3 shows still another usage state. FIG. 4 is a schematic plan view thereof, and FIG. 5 is a schematic side view showing another embodiment. l... Winding shaft 2... Curtain 4... Curtain support vibro... Drive motor 7... Guide roller box 10... Guide member 1)... Hanging member 13... Balancer 14...Wire 17... Stopper

Claims (1)

[Claims] (1) A winding drive motor or its drive transmission mechanism, etc. is provided at the end of the winding shaft for winding and unwinding the curtain, and a guide member such as the motor is arranged parallel to the curtain guide shaft. Curtain winding/closing device for a greenhouse, etc. (2) Claims (2) A curtain winding/closing device for a greenhouse, etc., which is provided to be swingable up and down about the position of the upper end in the state, and is provided with a balancer for reducing the weight of a motor, etc. on the guide member. In 1), the curtain winding/closing device for a greenhouse or the like is characterized in that the upper end of the guide member is swingably supported by a hanging member. A curtain winding/closing device for a greenhouse, etc., characterized in that the upper end is swingably supported on a fulcrum shaft parallel to the curtain winding shaft (4) In claim (1), the upper end of the guide member (5) A curtain winding/closing device for a greenhouse, etc., characterized in that a portion thereof is swingably supported by a universal joint.
Curtain winding/closing device for a greenhouse, etc., characterized in that the guide member is configured to be expandable and contractible (6) Claims (1), (2), (3), (4)
Or, in (5), the curtain winding/closing device for a greenhouse, etc., characterized in that the guide member is guided by a swinging guide member.