JPS61293320A - Apparatus for opening/closing and winding up curtain 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 movable up and down centering on a position parallel to the curtain guide axis, and a motor attached to the guide member. The present invention provides a curtain winding/closing device for a greenhouse, etc., which is provided with a balancer that reduces the weight of the motor, etc., and substantially reduces 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 so as to be movable up and down centered on a position parallel to the curtain guide shaft, the height of the drive motor etc. is guided faithfully according to the winding amount 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, especially since the drive motor and its guide member are generally located at the end of the curtain winding shaft, it is possible to move the curtain up and down without affecting the opening/closing area of the curtain. It is also possible to provide a balancer.

Embodiment In the case of the 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. 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 be moved as necessary. It is. 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 according to the present invention penetrates between these rollers 7a and 7b. In other words, the drive motor 6 is moved to the guide member 10 by the guide roller box 7 which holds the guide member 10 between the rollers 7a and 7b.
It guides its movement and supports it by hanging it. It is most preferable that the position of the guide roller box 7 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 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 embodiment, the guide member 10 has its upper and lower ends 10a, 10b connected to a hanging member 11.1 with balancers 13a, 13b.
4. That is, the upper end portion 10a of the guide member 10 is connected to the pulley 8 provided on the greenhouse frame material.
．． The hook 9 is connected to one end of the rope-like hanging member 11, and is configured to be suspended with a balancer 13a provided at the other end of the hanging member 11 to reduce its weight. Similarly, the lower end 10b of the guide member 10 is connected to one end of a lobe-shaped hanging member 14 that is hung on a pulley 12 provided on the greenhouse frame material, and the other end of the hanging member 14 is connected to the lower end 10b of the guide member 10. The weight of the balancer 13b is reduced by hanging it together with a balancer 13b provided in the section. In addition, in the case of the embodiment, a stopper 11a is provided on the hanging member 11, so that when the weight of the upper end 10a of the guide member 10 becomes lighter than the balancer 13a, it comes into contact with the pulley 8 and is prevented from being pulled in any further. It is composed. 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 may be a means for rotatably supporting the guide member by a fulcrum shaft parallel to the curtain winding shaft 1, or a means for rotatably supporting the upper end portion 10a of the guide member and the hanging fitting 18a. Although various conventionally known means such as means for freely supporting can be used, as in the embodiment, the hanging member 11 such as a hanging chain is attached to the hanging fitting 18a.
Of course, it is also possible to hang it. 10 lower end 1
Similarly, the suspension fitting 18 of the pulley 12 can be suspended using a retractable balancer that has spring elasticity and can accommodate the weight of the guide member 10. As the balancers 13a and 13b, for example, the guide member 10 may be pulled by using a tensioning means such as a constant spring spring that pulls the wire 11.14 with a substantially constant force with respect to the amount of withdrawal.
It can also be balanced. 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 case of the embodiment, the guide member 10 is a telescopic shaft 1
It consists of 5 and 16 pieces, and expands and contracts as needed. A stopper 17 is provided on the lower end portion 10b of the guide member 10, with which the guide roller box 7 comes into contact 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 mode of use of the device of the present invention will be explained based on the embodiment illustrated above. In FIG. 2, 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 through a guide roller box 7 to a guide member 10, and the guide member 10 is connected to a balancer 13a through wires 11.14 at its upper and lower ends.
13b reduces its weight. 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 upper plate 23 in FIG. In the state shown in Figure 1, 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 10 moves 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 part facing the greenhouse side wall 24 while maintaining the weight balance with the balancer 13b, and the winding shaft 1 shown in the third figure is the lower limit. It stops at the position where it touches the terminal of the limit switch 20. At this time, even if the curtain 2 is steeply sloped, the weight of the drive motor 6 is
b, and no unreasonable load is applied to the curtain 2, so that the curtain 2 is smoothly rewound. In the conventional device, this curtain 2 extends from a part parallel to the roof 23 to a side wall 2.
When moving to a steep slope section parallel to 4, the drive motor 6
There was a risk that the vehicle would suddenly receive the weight of the vehicle and fall suddenly. Moreover, when moving from FIG. 1 to FIG. 3, if the hanging member 11 of the hanging wire set of the embodiment is of sufficient length,
As shown in the figure, as the guide member lO swings downward,
Since the hanging member 11 swings the upper end portion 10a in the movement direction, 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. 11 is fixed like a fixed fulcrum shaft joint, the guide member 10 is attached to an extendable shaft 15, 16.
It is preferable that the wire 14 of the balancer 13b is configured to expand and contract as necessary as the drive motor 6 moves. In short, the lower end portion 10b of the guide member 10 is
If the swing end guide member 21 made of a slide wire, rail, pipe, etc. stretched along the chamber side wall is configured to reliably guide the wire 14, the direction in which the wire 14 is pulled can be set relatively freely. Of course, it is also possible to change the design on-site. In FIG. 5, reference numeral 22 denotes a connection source provided at the lower end 10b of the guide member 10 so as to engage with the guide member 21. As shown in FIG. Further, even if the upper end portion 10a of the guide member 10 is fixed and the guide member 10 does not expand or contract, as long as the guide member 10 is long enough, the linear guide member 21 can be used. When the guide member 10 is short, the guide member 21 may be provided in an arc shape. In addition, 26 indicates the frame material 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. 2 via FIG. This is similar to the case of rewinding. In addition, in the case of this winding, the upper limit switch 19 is
When is located higher up, the hanging member 11 swings upward along the roof in the opposite direction to the above, and can extend the range of winding the curtain 2, thus changing the height of the curtain on the opposite roof. By overlapping the upper edges,
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 provides a winding drive motor or its drive transmission mechanism on the winding shaft for winding and unwinding the curtain, and positions the guide member of the motor at a position parallel to the curtain guide shaft. It has the structure of a curtain winding/closing device for a greenhouse, etc., which is movable up and down with respect to the standard, and the guide member is provided with a balancer to reduce the weight of a motor, etc., so that the guide member of the conventional device is not used for laying the curtain. Whereas curtain winding shafts are fixedly installed along the direction, the curtain winding shaft becomes thicker and thinner as the curtain is wound, so it is quite difficult to make the guide member faithfully follow the winding and amount of the curtain. However, in the present invention, since the guide member is provided to be movable up and down, 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 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 moves as the curtain is opened and closed, it would complicate the structure and be difficult to reduce the weight by holding it directly, but it is difficult to lift the guide member that guides the drive motor etc. Reducing the weight is relatively easy, especially since the drive motor and its guide member are often located at the end of the curtain winding shaft, so they can be moved without affecting the opening/closing area of the curtain. It is also possible to provide a balancer, which has great effects.

[Brief explanation of the drawing]

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. 1... Winding shaft 2... Curtain 4... Curtain support vibro... Drive motor 7... Guide roller box 10... Guide member 11... Hanging members 13a, 13b... Balancer 14... Hanging member 17... Stopper

Claims (1)

[Claims] (1) A winding drive motor or its drive transmission mechanism is provided on the winding shaft for winding and unwinding the curtain, and the guide member of the motor, etc. is set with reference to a position parallel to the curtain guide shaft. (2) A curtain winding/closing device for a greenhouse, etc., which is movable up and down, and the guide member is provided with a balancer to reduce the weight of a motor, etc. (2) In claim (1), the guide member has a balancer. (3) A curtain winding/closing device for a greenhouse, etc., characterized in that the curtain winding/closing device is movably supported by a hanging member having a guide member (3). Curtain winding/closing device for a greenhouse, etc., characterized in that it is movably supported by a hanging member (4) In claim (1) or (2), the guide member and the hanging member are connected by a universal joint. (5) In claim (1), (2), (3) or (4), the guide member is configured to be expandable and retractable. (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 movable guide member.