JPS6137246Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in an opening/closing device for a partition curtain that is stretched inside a greenhouse for the purpose of heat retention or light shielding.

Generally, when water is sprinkled onto a partition curtain, the condensed water flows down, collects, and drains.The curtain is stretched at an angle to allow it to flow down, and the condensed water is collected and drained along the lower edge of the curtain.
Drainage gutters are being installed. However, if the inclination of the curtain is increased in order to improve the flow of air, the heat-insulating air space created by the partition also becomes larger, which increases the consumption of heating fuel and reduces thermal efficiency.
On the other hand, if the inclination is made smaller or the curtain is laid horizontally, the thermal efficiency is improved, but this causes problems such as accumulation of running water and trouble in unwinding when opening and closing the curtain.

Furthermore, conventional collection and drainage gutters for greenhouses are structurally robust, but lack light and watertightness.
Moreover, those with good lighting and water tightness were structurally weak and lacked durability.

Furthermore, in the case of a greenhouse with a low eave height, if the slope of the partition curtain is large, the effective space for cultivation may be reduced, especially the height up to the curtain may be insufficient.

The present invention provides an ideal greenhouse curtain opening/closing device that eliminates many of the above-mentioned drawbacks, is easy to install, and is more economical.

The present invention will now be described in more detail with reference to embodiments shown in the drawings.

Figures 1 and 2 show a multi-building greenhouse with water spraying and heat retention, and 1a and 1b are partition curtains that are slanted left and right, and the upper edges of each are fixed to the central beam 2. At the same time, each lower edge is fixed to the winding shafts 3a and 3b, respectively. Then,
The left and right curtains 1a, 1b are provided with curtain mounting members 4a or 4 stretched or arranged in parallel at appropriate intervals.
placed on b. The curtain mounting member 4a is a rope material, and 4b is a hard pipe material or a bar material, each end of which is fixed by base members 41 and 45 as described later. Note that it is possible to select as appropriate to use only the rope material 4a or the pipe material 4b as the curtain mounting member, or to use both together.

In addition, the center beam 2 is attached to the greenhouse frame as shown in the figure.
The HF shall be fixed at both ends to the HF, or suspended from the ceiling of the greenhouse using hanging wires, etc. (not shown).

FIGS. 3 to 5 show gutter devices fixedly disposed at each of T ₁ , T ₂ , and T ₃ in FIG. 1. The gutter device includes a gutter body 10 made of a transparent hard elastic plastic sheet, a cylindrical attachment part 11 continuous to the vicinity of one end in the longitudinal direction of the gutter body, and a cylindrical attachment part 11 inserted into the cylindrical attachment part and having both ends thereof. Opening edge support rope 31 fixed and tensioned at key points in the greenhouse
and opening edge holding members 6, 61 disposed substantially parallel to the support rope to hold the other opening edge.
and a fixed holder 5 having a concave portion for holding the gutter body in a predetermined concave shape and a support portion for supporting the opening edge support rope and the opening edge holding member, respectively. To explain this in more detail, 10 is a gutter body made of a transparent and elastic hard plastic sheet 10a, and the material used is, for example, hard vinyl chloride, hard polyester, acrylic or nylon, or a composite material thereof. 11 is the gutter body 1
It is a cylindrical mounting member that is integrally fixed in the longitudinal direction on either the front or back surface near one end edge of 0, and fastener pieces 11a provided in the longitudinal direction.
11b so that it can be opened and closed freely. still,
The above-mentioned fastener pieces 11a, 11b can be made of various known fasteners that engage with each other. Alternatively, it may be formed into a normal tube shape without opening and closing using a fastener or the like. Reference numeral 10b denotes a bending groove or a crooked portion provided in the longitudinal direction near the other side edge of the gutter body 10, and may be provided as required. Reference numeral 31 is a support rope material, wire material, or equivalent material, which is stretched inside the greenhouse aggregate struts HF and whose both ends are fixed to important points in the greenhouse to support one opening edge of the gutter body 10. Small diameter pipe material, 5 is a support
It is a plate-shaped fixed holder for shape-retaining support that can be fixed to the HF with a U-shaped bolt 5b, etc., and its recess 5a
The center portion of the sheet 10a of the gutter body is inserted into the gutter body to form a gutter shape. Reference numeral 6 denotes a pipe material having a substantially rectangular cross section, which is disposed approximately parallel to the support rope 31 to support and fix the other opening edge of the gutter body 10, and together with the angle material 61, serves as an opening edge holding member. It consists of 51 is a rope support groove provided near the upper end of the recess 5a of the fixed holder 5; 52 is a support frame connected and fixed to the upper end of the holder on the opposite side of the rope support groove 51; As shown in the figure, the inner diameter is large enough to allow the square pipe 6 and the angle member 61 to be inserted and held therein. A tightening bolt 521 is screwed into the screw hole 522 to fix the square pipe 6. Of course, a screw hole 522 may be provided on the lower surface of the support frame 52 to press and fix the square pipe 6 and the angle member 61 from below.

Next, the mounting method will be explained. First, attach the fixed holder 5 to the greenhouse support HF using U-shaped bolts 5b, etc.
Then, the support rope 31 is stretched as shown in FIG. 3, and both ends of the support rope 31 are fixed to important points in the greenhouse, such as the support frames HF and HF on both gable sides. On the other hand, the square pipe material 6 is also inserted into the support frame 52 of the holder so as to be substantially parallel to the support rope 31. This square pipe 6 may be a single long body, but it may also be connected by connecting pieces of appropriate length with joint members depending on the size of the greenhouse, or by butting them together within the support frame 52. good. Next, the gutter body 10 is fitted into the recess 5a of the holder 5, and both opening edges thereof are fixed as shown in FIG. That is, one opening edge is fitted into the rope support groove 51 of the holder by closing the fastener pieces 11a and 11b with the support rope 31 inserted into the cylindrical attachment part 11, and the other opening edge is inserted into the square pipe 6. and the angle member 61. In addition, during the above installation procedure, before tightening each tightening bolt 521, 73, remove the angle material 61 and the plastic sheet 1a.
The U-shaped member 6 shown in FIG.
3 etc. may be fitted onto the angle material 61 and the square pipe 6, and temporarily fixed until the bolt tightening is completed. Also, as shown in Figure 5b,
Groove 1 for bending on plastic sheet 10a
By providing the curved portion or thin wall portion 10b, the square pipe 6 and the angle material 61 can be easily bent and held together, and can be used as a guide for the holding width.

Incidentally, the order in which the support rope 31, the square pipe 6, and the plastic sheet 10a are attached is not limited to the above, and can of course be changed as appropriate.

6 to 10, the curtain mounting member 4a
A base member 41 for tensioning and fixing 4b and a base member 45 for constructing and fixing are shown. The base member 45 for construction has a U-shaped mounting portion 451.
Joint pipe 45 protruding and fixed on the top surface of
2, and a tightening bolt 453, as shown in FIG.
It can be installed from the outside of 1. Base member 41 for tensioning
includes a frame plate 411 and a claw shaft 42 which is attached and fixed to the frame plate and has one or more claws on the outer periphery.
It is fitted onto the claw shaft, has an inner tooth portion on its inner periphery that engages with the claw, and has a rope fixing portion and a rope winding portion on its outer periphery, and is fixed to the claw shaft. It consists of an outer ring 43 for adjusting rope tension that is rotatable in only one direction, a U-shaped mounting member 412, and a tightening bolt 413.
This will be explained in detail according to FIGS. 7 to 10. Reference numeral 411 is a substantially square-shaped frame plate, and the square pipe 6 and Fit and fix to the angle material 61 (third
figure). At the upper part of the frame plate 411, a mounting portion 414 for the pawl shaft 42 and the outer ring 43 is formed.
One or more claws 421a, 42 are provided on the outer periphery of the claw shaft 42.
1b and 421c are formed to protrude outward. These claws are connected to the edges of the thin parts 422a, 422b, and 422c that form part of the outer periphery of the claw shaft 42, so that the elasticity of each thin part allows the inner and outer surfaces of the outer circumferential surface of the claw shaft to be moved inside and outside as shown in FIG. It is possible to appear as shown by arrow p. After fitting the pawl shaft 42 between the attachment parts 414 of the base member, insert the bolt 44 into the shaft hole 423 and tighten the nut 44.
Tighten and secure with a. In this installation, the claw shaft 42 is fixed so as not to rotate. As shown in the figure, the rotation stop mechanism is as follows.
Polygonal, for example, square protrusions 424 are formed at both ends of the axis of the claw shaft 42, while the mounting portion 4 of the frame plate
14 is preferably formed with a recess 415, 415 or a hole of a size that allows the protrusion 424 to fit therein, but the invention is not limited thereto, and the shaft hole 423 may be formed into a polygon with corners having a shape that corresponds to the shape of the shaft hole 423. It may also be done by inserting a bolt 44 or the like. Further, the outer periphery of the claw shaft may not be discontinuous, but the thin elastic portion may be continuous as shown by the chain line in FIG. Furthermore, the frame plate 41
1 is not limited to the above-mentioned shape, but may be a square shape, a square shape, or other shapes. Reference numeral 43 designates an outer ring into which the pawl shaft 42 is fitted so that it can rotate freely only in one direction (direction of arrow q in FIG. 10), and on its inner periphery are the pawls 421a, 421b, 421c of the pawl shaft. An inner tooth portion 431 that meshes with all or any of the teeth is provided, and a rope fixing portion such as a rope insertion hole 432a and/or rope insertion groove 432b is provided on the outer periphery of the inner tooth portion 431, and a rope wrapping portion 433 is provided. There is.

Then, by attaching the rope 4a as shown in Fig. 7 and fixing it by wrapping one end of the rope 4a around the outer ring 43, rotating the outer ring 43 in the direction of arrow q until the rope becomes taut, and then stopping the rotational force, the claw will be released. 421a, 421b,
421c engages with the inner tooth portion to prevent reverse rotation and fix. Further, when the rope 4a is stretched and slackened, if the outer ring 43 is rotated by that amount in the direction of the arrow q with fingers or the like, the rope 4a will not be reversed and the rope 4a will be held in a taut state.

Note that it is free to use the tensioning base member 41 at both ends of the rope 4a, or to use it only at one end and bind and fix the other end to an immovable member.

Next, FIG. 2 and FIGS. 11 to 16 show a drive device for rotationally biasing the winding shafts 3a, 3b. The drive device consists of a forward/reverse drive mechanism 8 and a rewinding mechanism 7, and even when the angle of inclination of the curtain partition surface is small, the winding shafts 3a and 3b can be accurately rolled in the opening/closing direction. The curtain is characterized in that it is designed so that the curtain is not subject to abnormal tension during opening and closing operations. To explain this in detail according to the drawing, 8
is a forward/reverse drive mechanism, and the rotational force of the electric motor M is transmitted to the movable reducer 8 via a flexible rotating wire 81.
2. The speed reducer 82 is connected to one end of the winding shaft 3a or 3b, and the guide rail 8
3, it is guided so as to be movable back and forth between the left and right side walls of the greenhouse while being supported so as not to rotate. Reference numeral 7 denotes a rewinding mechanism, which includes a drive source section 71 and a rewinding wire 72. Therefore, the drive source section 7
1 is the side wall frame HF of the greenhouse, that is, the winding shaft 3a
is fixed to the frame on the unwinding side, and an unwinding wire 72 is wound and tensioned between the output shaft 711 and the winding shaft 3a.

FIG. 11 shows an embodiment of the configuration of the drive source section 71. As shown in FIG. 712 is a casing attached and fixed to the greenhouse frame HF, 713 is an output shaft rotatably supported within the casing 712, and 714
is rotatably supported within a casing 712 which is a main shaft for the spring. Reference numeral 715 designates a constant restoring force mainspring spring, one end of which is fixed to the output shaft 713 so as to be tightly wound, and the other end thereof is not fixed to the spring main shaft 714 but tightly wound. Flange portions 713 and 714 are fixed to the output shaft 713 and the main shaft 714, respectively, and are provided as necessary to wind the mainspring spring 715 in an aligned manner. 71
6 is an auxiliary shaft, 717 is an auxiliary drum, and the rewinding wire 72 is fixedly wound around the auxiliary drum 717. However, it goes without saying that the rewinding wire 72 may be wound directly around the output shaft 711 without providing the auxiliary shaft 716 and the auxiliary drum 717. Further, it is an embodiment included in the present invention that the casing 712 is formed so as to house the auxiliary drum 717, and an outlet for the unwinding wire is provided at an appropriate location.

Furthermore, in addition to installing one constant restoring force spring 715 as shown in FIG. 11, if necessary, two spiral springs 715a and 715b may be installed as shown in FIG. 12, or three or more springs may be installed. is a design change included in the present invention. In order to install a plurality of mainspring springs, as shown in FIG. 12, one end of each is provided so as to overlap and wrap around the output shaft 713.

Furthermore, as shown in FIG. 13, the auxiliary shaft 716 may be extended along the side wall of the greenhouse, and a plurality of auxiliary drums 717a, 717b, 717c, . . . may be fixed to this at appropriate intervals. In this case, one end of each of the unwinding wires 72a, 72b, 72c, . do. This arrangement also has the effect of peeling off the adhesion surface of the roll-shaped winding portion when unwinding the curtain. Also, it is possible to provide a plurality of drive source parts 71 depending on the size of the greenhouse and the curtain thickness, for example, one drive source part 71, 71a at each end of the auxiliary shaft 716.
or drum 7 in the middle part of the auxiliary shaft
It may be installed in place of 17b and 717c.

FIG. 14 shows the configuration of the speed reducer 82, in which 821 is a worm and 822 is a worm wheel.

Now, when the prime mover M rotates and urges the winding shaft 3a in the direction of the arrow r in FIG.
Roll in the direction to open the curtain. At this time,
Since the unwinding wire 72 is wound around the winding shaft 3a and is pulled in the rolling direction of the winding shaft,
The auxiliary drum 717, the auxiliary shaft 716, and the output shaft 711 of the drive source 71 are rotated in the direction of arrow S in FIG. Due to this rotation of the output shaft 711, the mainspring spring 715 is extracted from the main shaft 714 and wound around the output shaft 711. In this process, the unwinding torque of the mainspring spring 715 acts on the winding shaft 3a, but the mainspring spring 71
Since 5 is a spiral spring having a constant restoring force regardless of the amount of unwinding, the unwinding torque is always constant until extraction from the main shaft 714 is completed. Therefore, since an unreasonable increase in tension does not occur in the curtain 1a, damage accidents will not occur.

Next, when the prime mover M is reversed, the winding shaft 3a
rotates in the direction opposite to the arrow r to rewind the curtain 1a. Then, the winding shaft 3a is moved by the mainspring spring 7.
The drive source section 71 receives the action of the unwinding torque of 15.
being drawn in a direction. At this time, the winding shaft 3a is given a constant rotational speed by the reducer 82, but the moving speed decreases due to the decrease in the winding diameter. However, even if the moving speed of the winding shaft 3a changes, the unwinding torque of the mainspring spring 715 is kept constant, so the unwinding wire 72 can pull the winding shaft 3a with a substantially constant tension. Can be done. Therefore, the curtain 1a that is rewound can be properly closed without loosening or sagging on the partition surface and without being subjected to excessive tension.

In addition to the indoor partition curtain shown in the drawings, an embodiment included in the present invention is an opening/closing device for an outer covering sheet stretched over a partition surface of a greenhouse side window or a skylight.

In the above embodiment, a constant restoring force mainspring spring is used in the rewinding mechanism, but a normal mainspring spring may also be used. In this case, as shown in FIG.
One end of the spring 715' is fixed to a key point on the inner wall of the
The other end is wound around the auxiliary shaft 716 and its edge is fixed. Since the unwinding torque of this spring changes depending on the amount of winding around the auxiliary shaft 716, in order to keep this constant, a winding drum 717' tapered to have different diameters may be provided at the part where the wire 72 is wound. desirable.

Further, the structure may be such that the wire 72 is not wound around the curtain winding shaft 3a. For example, the first
As shown in FIG. 6, a wire fixing device 721, for example a ring-shaped member, is provided, in which the winding shaft 3a is rotatably loosely fitted, and one end of the wire 72 is fixed to the fixing device 721.

Furthermore, the rotational drive mechanism 8 is not limited to the embodiment shown in FIG. 2, and of course may have a structure in which the electric motor M is directly attached to the winding shaft 3a without using a transmission mechanism, for example. .

In Figs. 17 to 18d, the winding shafts 3a and 3b are shown.
Another example is shown. That is, the winding shafts 3a and 3b used in the present invention are as follows:
In principle, known straight bars or pipes with a circular or polygonal cross section are used. However, in large-scale greenhouses, it may be difficult to wind up the wide and long curtains into a completely uniform roll. The illustrated embodiment shows a new winding shaft for winding and unwinding the film while maintaining a uniform winding diameter without being affected by wrinkles or twists occurring on the film surface. It is something. 9 is a winding shaft body made of metal or the like;
Reference numeral 91 denotes bulging portions fixed on the winding shaft main body 9 at arbitrary intervals, and the diameter is larger than that of the winding shaft main body 9, and the maximum diameter R of each bulging portion is equal. The shape of the bulging portions 91, 91, . . . may be a smooth arcuate cross section as shown in FIGS. 18a to 18c, or a substantially trapezoidal cross section as shown in FIG. 18d.

When the winding shaft 9 is driven to wind the curtain 1a in FIG. 2, the curtain film 1a is brought into close contact with the surrounding surface of each bulge 91, 91, . . . as shown in FIG. 18a. On the other hand, it does not tightly tighten around the circumferential surface of the winding shaft main body 9, which has a smaller diameter, but winds loosely. Therefore,
Even if wrinkles or twists occur on the surface of the curtain film 1a to be wound, the wrinkles or the like that enter the small diameter recesses are wound up as they are, and the large diameter bulges 91,
91...Wrinkles, etc. that enter the top are pushed into the recesses on both sides by the tension force. Therefore, each large diameter bulge 9
1, 91, . . . , the winding diameter is always increased by the thickness of the curtain film 1a without winding up wrinkles or the like. On the other hand, the winding diameter of portions such as wrinkles gathered in the small-diameter concave portion does not exceed the winding diameter of the large-diameter bulge. Therefore, since the curtain 1a is wound up at a uniform speed over the entire length of the winding shaft, accidents such as breakage do not occur. In addition, since the winding diameter is constant over the entire length of the winding shaft, even if a rotational force is applied at one end of the winding shaft body, the winding shaft remains straight without twisting or bending at the middle part. It can be rotated to

The large-diameter bulge 91 may be formed integrally with the shaft body 9 from the same material as shown in FIG. It is also possible to fit it in such a way that it is inserted through it, and to fix it with a set screw 92 or with an appropriate means such as an adhesive. Moreover, as shown in FIG. 18c, large diameter bulges 91, 9
1... consecutively arranged, or 18a,
It is free to arrange them intermittently at appropriate intervals as shown in figures b and d.

By using the one shown in FIG. 18d and arranging the trapezoid top surface so that it rolls on the curtain mounting member 4a or 4b, the winding shaft 9 can be stably and accurately rolled. Therefore, the curtain 1a can be opened and closed more smoothly. Of course, the small diameter portion between the trapezoidal ridges may roll on the support rope 4a or the pipe material 4b.

According to the present invention, which has the above-mentioned structure and function, (A) a gutter device that uses a flexible, strong, and seamless gutter body to prevent water leakage and can be deformed to adapt to the deformation of the greenhouse, etc. It can be collected and drained.

(B) The mounting member that forms the curtain partition surface is always properly held, so even if it is a gently sloped surface,
No running water collects on the curtain.

(C) When opening and closing the curtain, the driving force acts uniformly and the roll-like winding and unwinding is always accurate, so there is no damage to the curtain.

(D) Can also be applied to opening and closing horizontal partition curtains.

(E) Installation work is easy.

(F) Larger cultivation space can be secured.

It has many practical effects.

[Brief explanation of the drawing]

Fig. 1 is a simplified configuration diagram of a greenhouse using the device of the present invention, Fig. 2 is a partially omitted perspective view showing its internal structure, and Fig. 3 is a partially omitted perspective view showing the _T1 portion in Fig. 1. Fig. 4 is a cross-sectional view of Fig. 3, and Figs. 5a and 5b are perspective views showing the gutter body and Z
-Z sectional view, Figure 6 is a - sectional view in Figure 3, Figure 7 is a - sectional view in Figure 3, and Figure 8 is a -Z sectional view.
The figure is a partially omitted exploded view showing the rope tension base member 41, FIG. 9 is a Y-Y sectional view in FIG. 8, FIG. 10 is a side view showing the outer ring 43, and FIG. 2 is a sectional view taken along line XI-XI, FIG. 12 is a longitudinal sectional view showing another embodiment of the rewinding mechanism, and
3 is a perspective view showing another embodiment of the rewinding mechanism, FIG. 14 is a partially sectional side view showing the reducer 82, and FIG.
5 and 16 are partially sectional side views showing other embodiments of the rewinding mechanism, and FIGS. 17 and 18a-
Figure 18d is a perspective view and a central vertical sectional view showing another embodiment of the winding shaft. 1a, 1b... partition ten, 3a, 3b, 9...
... Winding shaft, 4a, 4b ... Curtain mounting member, 5
... Fixed holder, 6 ... Square pipe, 10 ... Gutter body, 41, 45 ... Placement base member, 7 ... Rewinding mechanism, 8 ... Forward/reverse drive mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An opening/closing device for a partition curtain installed in a greenhouse, comprising: a curtain support device for placing the partition curtain to form a partition surface; and fixing one end edge of the curtain. a winding shaft for winding and unwinding the partition curtain into a roll; a device fixedly disposed on the greenhouse frame so as to accommodate the one end edge of the partition curtain and the winding shaft; and the winding shaft. A greenhouse curtain opening/closing device comprising: a drive device comprising a prime mover that drives a shaft in a direction to wind it; and a drive source unit for the unwinding torque action of a mainspring spring that drives the winding shaft in a direction to unwind it. 2. The curtain support device consists of a plurality of curtain mounting members arranged in parallel at appropriate intervals, and a base member for fixing the ends of each curtain mounting member, and the base member is connected to the gutter. The greenhouse curtain opening/closing device according to claim 1, which is detachably attached to a suitable location of the device. 3. The greenhouse curtain opening/closing device according to claim 1, wherein a plurality of bulges are formed on the winding shaft. 4. The gutter device includes a gutter body made of a transparent hard elastic plastic sheet, a cylindrical attachment part continuous to the vicinity of one longitudinal end of the gutter body, and a cylindrical attachment part that is inserted into the cylindrical attachment part and both ends of which are connected to the greenhouse part. an opening edge support rope fixed in place and tensioned; an opening edge holding member disposed substantially parallel to the support rope for holding the other opening edge; and the gutter body being shaped into a predetermined concave shape. The greenhouse curtain opening/closing device according to claim 1, comprising a fixed holder having a recessed portion for holding and a support portion for supporting the opening edge support rope and the opening edge holding member, respectively.