JPS6228857Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a winding device for winding up, unwinding, and opening/closing wide and long films, sheets, etc., particularly partition curtains for greenhouse heat insulation.

Conventionally, this type of curtain opening/closing device uses a winding rod 1' made of a straight bar or straight pipe with a circular or polygonal cross section, as shown in Fig. 1 (rolling type) and Fig. 2 (fixed position rotating type). One end of the curtain 2' is fixed to the winding rod 1', and the curtain 2' is wound into a roll and unwound to open and close the partition surface.

However, during winding, it is impossible to wind up the wide and long curtain into a completely uniform roll. In other words, due to misalignment of the axis of rotation due to the bending of the long winding rod, partial elongation of the flexible curtain itself, and other causes, the curtain surface that is subjected to the tensile force of winding may have large and small wrinkles and twists. occurs. When this wrinkled or twisted portion is wound up, unevenness occurs on the roll surface, and the winding diameter becomes different. As a result, the tension speed applied to the curtain differs in each part, which causes unreasonable tension to act on the curtain, causing partial stretching and sagging, and further amplifying the wrinkles and twists mentioned above. . Furthermore, when the curtain is partially stretched and loosened, when the partition surface is closed by unwinding the curtain, the movable edge 2a' of the curtain becomes meandering and becomes uneven, making it impossible to completely close the partition. Ta.

The present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose is to be able to wind the curtain almost uniformly when winding the curtain, and to make it possible to wind the curtain evenly when winding the curtain. The object of the present invention is to provide a device that can prevent partial unwinding from occurring.

The present invention provides a winding device for a greenhouse curtain opening/closing device that is provided to open and close the partition surface by winding and unwinding the curtain on a winding rod.
A winding rod for winding and unwinding a curtain into a roll by rotation in a fixed position or rolling rotation, and a bulge member that is fitted and fixed at appropriate intervals on the winding rod to form a substantially cylindrical bulge. and a belt made of a flexible material, one end of which is fixed to the winding rod and/or the bulging member, and the middle part and the other end of the belt made of a flexible material that can be wound around the bulging member together with the curtain in a roll shape. This is a winding device in a greenhouse curtain opening/closing device characterized by:

Hereinafter, the present invention will be explained based on the drawings.

Fig. 3 shows an embodiment in which the present invention is applied to a winding shaft rolling type greenhouse curtain opening/closing device.
2 is a winding rod, and 2 is a partition curtain, one end of which is fixed to the winding rod 1 and the other end fixed to an immovable part F such as a greenhouse beam, and when the winding rod 1 rotates in the direction of the arrow. It is wound into a roll and opened, and when rotated in the opposite direction to the arrow, it is unwound and closed.

In the figure, 101 is a rotation transmitter with a reducer, 10
2 is a guide rod for movably supporting the rotation transmitter 101 along the curtain partition surface while preventing rotation; 103 is a flexible rotating wire; 104 is a driving motor capable of forward and reverse rotation; 10
Reference numeral 5 denotes a support member such as a wire stretched and fixed in order to form a partition surface of the curtain 2. 3 is a flexible material such as polyester, acrylic,
The belt 4, which is made of a band-shaped body made of nylon fiber, is a bulge member that is fitted and fixed on the winding rod 1 at appropriate intervals to form a substantially cylindrical bulge.

As shown in FIGS. 4 to 12, this bulging member is made up of two members 4a and 4b having a substantially square cross section, and is fitted and fixed from the outside of the winding rod 1, and the belt is fixed at the mating portion. It is formed so that the vicinity of the end portion can be clamped and fixed. By forming the members 4a and 4b in the same shape, there is an advantage that manufacturing costs can be reduced.

In the example shown in FIG. 4, a convex portion 41 and a concave portion 42 are formed on the mating surfaces 4a' and 4b' of the members 4a and 4b which abut against each other, and which fit when the two are brought together. Further, a through hole 44 is provided in the center of each member 4a, 4b, into which a set screw 43 for fixing the winding rod 1 against rotation is screwed. However, the set screw 4
3. Instead of the through holes 44, sharp protrusions may be provided on the inner peripheral surfaces of the members 4a and 4b to press the rod 1. 45... are bolts for fixing both members 4a, 4b, and 46... are nuts that are screwed together.

In the example shown in FIGS. 5 and 6, fixing protrusions 47 and 48 are arranged at different levels on the mating surfaces 4a' and 4b' of the members 4a and 4b. 4, the protruding pieces 47 and 48 are assembled with each other. Further, the mating surface 4a'' is provided with a convex rib 49, a protrusion 50 continuous to one side end thereof, a recess 51, and a fitting hole 52 opening in the side wall of the recess 51.The other member 4b
The mating surface 4b'' also has the above-mentioned symbols 49, 50, 51,
The same configuration as 52 is provided at a facing position where they can be fitted. When fixing both members 4a and 4b, first, the protruding rib 49 and the protrusion 50 are fitted into the recess 51 of the other member, and then the member 4 is fixed.
a, 4b in opposite directions to fit the protrusions 50, 50 into the fitting holes 52, 52, then align the corresponding convex pieces 47, 48 and tighten the setscrews 53, 4b.
53 and screw them together.

The example shown in FIG. 7 has fitting protrusions 54, 54 protruding from the mating surfaces 4a', 4b' of the members 4a, 4b,
Holes 55, 55 into which the protrusions 54, 54 fit are formed in the other mating surfaces 4a'', 4b''. A hook-shaped hook portion 54a is provided at the tip of this projection 54, and a locking portion 55a corresponding to the hook portion is provided in the other hole 55 (see FIG. 8). When fixing both members 4a and 4b, the protrusions 54,
54 and the holes 55, 55 are arranged in correspondence with each other, and the protrusions 54, 54 are inserted and fitted into the holes 55, 55. At this time, if holes 3a, 3a are formed in the ends of the belt 3 to insert the protrusions 54, 54, when the two members 4a, 4b are assembled, the protrusions 54, 54 can be inserted into the holes 3a, 3a. By combining the members, it is also possible to lock the belt at the same time.

The swelling member 4 shown in FIG. 9 has both members 4a and 4b.
It is configured to be clamped by fixing rings 56, 56 for clamping and fixing both ends of each. In the figure, 57, 57 indicates the ring 56,
56 is a groove formed in the set portion.
The grooves 57, 57 serve to prevent the rings 56, 56 from coming off, and also to prevent the members 4a, 4b from slipping from each other.

Incidentally, if clamps 56', 56' as shown in FIG. 10 are used in place of the rings 56, 56, the two members 4a, 4b can be more firmly clamped.

The clamp 56' has a hook portion 56 at one open end.
a substantially circular ring member 56a' having a diameter h', and a lever 56 with one end rotatably fixed to the other open end of the ring member 56a' with a pin or the like.
b', and a locking fitting 56c' rotatably fixed to a key point of the lever 56b'.

The clamp 56' clamps the members 4a and 4b by locking a locking metal fitting 56c' to a hook portion 56h' and pressing a lever 56b' in the direction of the arrow.

Incidentally, the clamping is not limited to the above-mentioned clamp 56', and any known clamp may be used.

In FIG. 11, male threads 4m, 4m are provided on the outer peripheral surfaces of both ends of the members 4a, 4b, and the members 4a, 4b are provided with male threads 4m, 4m.
The female screw members 4n, 4n are shown so that they can be screwed together when they are brought together.

The male screw portions 4m, 4m are desirably formed in a tapered shape so that the members 4a, 4b can be more firmly clamped.

In FIG. 12, approximately U is shown at both ends of members 4a and 4b.
Insert the fitting hole 4 so that the letter-shaped stopper 4u can be inserted.
The one provided with h... is shown.

13 and 14 show the swelling member 4 as a cylindrical body 4.
A concave groove 41c is formed in the outer peripheral surface of the belt c in parallel with its long axis, and the end of the belt 3 is clamped and fixed in the concave groove 41c by a pressing plate 42c. In this figure, 43c, 4
3c is a screw for fixing the pressing plate to the cylindrical body 4c.

When fixing one end of the curtain with the bulging member 4 shown in FIGS. 4 to 12, one end of the curtain is wound around the winding rod 1, and the bulging member 4 wraps and fixes it from the outside. do. In addition, the one shown in FIGS. 13 and 14 is a rear pressing plate 42c with one end of the curtain wrapped around the outer periphery of the swelling member 4.
It is desirable to fix it integrally with the belt 3.

An example of the arrangement of the belt 3 is shown in Figures 15a, b, c. In FIG. 15a, the belt 3 is fixed or placed on the upper surface of the curtain 2 over substantially its entire length so as to coincide with the winding direction. 1st
5b and 5c show the curtains fixed to the lower surface of the curtain 2 or arranged so as to face each other.

The belt 3 may not be set over the entire winding length of the curtain 2, but only over a part of the length, for example, the latter half of the winding, or a string, rope, etc. Of course, it may also be used as an intervening device.

When the take-up rod 1 is rotated in the direction of the arrow in FIG. 3, the take-up rod 1 rolls while winding the curtain 2 and the belt 3 into a roll in a superimposed manner on the swelling member 4. Therefore, if the bulging member 4 and the belt 3 are arranged at appropriate intervals as shown in the figure, as winding into a roll progresses, the winding diameter of the overlapping winding portion of the belt 3 will become larger than the other portion r. This becomes the diameter portion R.

When the winding diameter of the roll is varied in this way, the curtain 2 is wrapped tightly and tightly around the circumferential surface of each large diameter portion R, while it tightly wraps around the circumferential surface of the small diameter portion r, which has a smaller diameter. It will wrap gently without tension. Therefore, even if there are wrinkles or twists on the two sides of the curtain to be rolled up, the wrinkles, etc. that enter the small diameter part R will be rolled up as is, and the wrinkles, etc. that enter the large diameter part R... will be rolled up. Under tension, it is pushed into the recesses of the small diameter portions r on both sides. Thus, the winding diameter always increases by the thickness of the curtain 2 and the belt 3 on the circumferential surface of each large diameter portion R without winding up wrinkles or the like. In addition, even if wrinkles, etc. are wound around the large diameter portion R, the space created by the wrinkles will be crushed and tightly adhered due to the strong pressure winding force, so there will be almost no difference in the winding diameter from other large diameter portions. It will no longer occur. On the other hand, the winding diameter of portions such as wrinkles gathered in the small diameter part r does not exceed the winding diameter in the large diameter part R. Therefore, curtain 2
Since the winding shaft is wound at a uniform speed over the entire length of the winding shaft, accidents such as breakage do not occur. Also,
Since the winding diameter is constant over the entire length of the winding rod 1, even if a rotational force is applied at one end of the winding shaft body,
The rod can rotate linearly without twisting or bending in the middle of the rod. Moreover,
In the present invention, even if the number of windings increases, the difference in unevenness between the small diameter part r and the large diameter part R can be maintained until the end of winding, so that the above-mentioned functions and effects are not diminished. In other words, the above effect can be obtained even if the winding rod 1 itself has a large diameter part and a small diameter part, but as the number of windings increases, the difference between the large and small diameter parts gradually decreases. There may be cases where the effect of the level difference is reduced. On the other hand, belt 3
In the case where the large diameter part R and the small diameter part R are formed by directly winding the curtain and the belt onto the winding rod 1, the large and small winding at the beginning of winding. Since the difference in diameter is too small, it has the disadvantage that the wrinkles and twists of the curtain can be rolled up as they are.

In contrast, in the present invention, at the beginning of winding of the winding rod 1, the swelling member 4 eliminates the adverse effects caused by wrinkles and twisting of the curtain, and when the number of windings increases, the winding thickness of the belt 3 increases. This allows the above effects to be sustained.

Further, when applied to a rolling type winding rod as described above, the effects and effects shown in FIG. 21 are also produced. When winding of a curtain or the like is completed, due to some reason, such as insufficient compression of the wrinkle entry part to the large diameter part Rn, the winding is performed in the large diameter part _R1 with tight winding and the large diameter part Rn with loose winding. There is a difference in diameter, and even though the large diameter part Rn has finished winding first, the other large diameter parts
It is also possible that the winding of R1 _etc. is not completed. As a result, as shown in FIG. 21, the take-up rod 1 is inclined with respect to the stationary member F, or has a meandering shape, making it impossible to completely open the curtain 2. Therefore,
By further rotationally biasing the winding rod 1, the loosely wound large diameter portion Rn is tightened at that location, and the tightened large diameter portion _R1 etc. are caused to roll and come into contact with the immovable member F. It is necessary to make the winding complete in a completely linear state.

At this time, a strong tension acts on the two sides of the curtain, especially on the large diameter part Rn, but the belt 3 becomes a reinforcing material and the tension hardly acts on the curtain, which has the effect of preventing the curtain from being damaged. It is. In this case, if the base end of the belt 3 is fixed to the immovable member F, the above-mentioned reinforcing effect can be further enhanced.

16 to 20 show examples of how to prevent the belt 3 from deviating from a predetermined position when the belt 3 is disposed facing the lower surface of the curtain 2.

Fig. 16 shows a net 9 spread over the entire partition surface of the curtain 2, and Fig. 17 shows a net 9a arranged slightly wider than the belt 3 and along the longitudinal direction of the belt 3. It is.

In FIG. 18, a support member 9c in the form of a string or band having locking devices 9b at both ends is fixed to the lower surface of the curtain 2, and the support member 9c prevents the belt 3 from moving laterally. In the same figure, reference numeral 9d designates an elastic ring that is paired with the locking tool 9b and is incorporated into the locking tool 9b to hold the curtain 2 between them. As shown in FIG. 19, a support member 9c is used instead of the locking member 9b.
A member 9e that can be attached to the curtain 2 at both ends of the
For example, the top surface may be coated with an adhesive material.

FIG. 20 shows an example in which guide members 91 having rising ribs 91a, 91a protruding from both sides of a support rod 9f are set at appropriate intervals to prevent movement of the belt 3. There is.

The present invention has the above-mentioned structure. At the beginning of curtain winding, a swelling member is used to prevent damage caused by wrinkles or twists of the curtain, and when the curtain has been wound to a certain extent, the winding thickness of the belt is increased. By maintaining the characteristics of the bulging portion, the above-mentioned damage can be removed and the curtain can be completely wound up almost uniformly and without leaving any unrolled portions. Therefore, there is no possibility that the unrolled portion will cast a shadow on plants grown especially in a greenhouse.
Furthermore, as shown in FIG. 15b, by placing the belt 3 on the rope material or straight bar material P forming the curtain partition surface, there is an effect that friction and tearing of the curtain 2 can be prevented.

As shown in FIG. 2, the winding rod 1' rotates in a fixed position and the moving end 2a of the curtain 2' is supported and pulled by the running rope L to open and close the curtain. Of course, by setting the swelling member 4 and the belt 3 on the take-up rod 1', the same operation and effect as in the above case can be produced.

[Brief explanation of the drawing]

1 and 2 are simplified configuration diagrams showing a conventional device, FIG. 3 is a partially omitted perspective view showing an embodiment of the device according to the present invention, FIGS. 4, 5, 7, 9, 11, 12, and 13 are exploded perspective views showing various examples of the swelling member, FIG. 6 is a front view showing one of the swelling members shown in FIG. 5, and FIG. An enlarged cross-sectional view showing one member of the swelling member shown in the figure, the first
Fig. 0 is a perspective view showing another embodiment of the ring 56, Fig. 14 is a side view showing the state in which the belt is attached to the swelling member shown in Fig. 13, and Figs. 15a, b, and c are the states in which the belt is arranged. 16 to 2
Figure 0 is a sectional view showing an example of a belt movement prevention member;
FIG. 21 is a plan view showing one mode of operation. 1, 1'... Winding rod, 2, 2'... Curtain, 3... Belt, 4... Swelling member.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a winding device of a greenhouse curtain opening/closing device which is provided to open and close the partition surface by winding and unwinding the curtain on a winding rod, a winding rod for winding and unwinding the winding rod into a roll; a bulging member that is fitted and fixed onto the winding rod at appropriate intervals to form a substantially cylindrical bulge; one end of the winding rod and the winding rod; A winding device for a greenhouse curtain opening/closing device, comprising: a belt made of a flexible material fixed to the swelling member, and whose middle portion and other end are arranged so as to be able to be wound in a roll shape on the swelling member together with the curtain; . 2. The above-mentioned registration in which the bulge member is made of two members having a substantially square cross section and is fitted and fixed from the outside of the winding rod, and is provided so that the vicinity of the end of the belt can be clamped and fixed at the joint part. A winding device according to claim 1. 3. The winding device according to claim 1, wherein the belt is a band-shaped body made of polyester fiber.