JP4481513B2 - Greenhouse curtain coupler and greenhouse curtain induction mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a greenhouse curtain connector that is mounted on a guide pipe that opens and closes a curtain disposed in a greenhouse, and a greenhouse curtain induction mechanism that uses the curtain connector.
[0002]
[Prior art]
In the greenhouse, curtains for light shielding, heat insulation, etc., usually made of a plastic film, are provided, and devices for opening and closing the curtains are provided. This apparatus will be described with reference to the block diagram of FIG. 7, for example, mounting wires 10a, 11a for mounting side pulley members 10, 11 stretched along the longitudinal side surface of the greenhouse A, A traveling wire 12 that is wound around the side pulley members 10 and 11 and stretched between the side surfaces of the greenhouse A, and the traveling wire 12 is wound and disposed to drive the traveling wire 12, and a drive unit And a driving take-up drum 13 that functions as: The curtains 14 and 15 are made of a pipe material or a wire, and one end edge is fixed to the center support member 16 disposed along the longitudinal direction in the approximate center in the width direction of the greenhouse, and the other end edge is the guide pipe 17 or 15. 18 is fixed. Since the guide pipes 17 and 18 are connected to the traveling wire 12 via a connecting member, the curtains 14 and 15 are connected to the traveling wire 12 via the guide pipes 17 and 18. The curtains 14 and 15 are opened and closed following the traveling of the wire 12. The curtains 14 and 15 are disposed between the lower shelf wires 19 and 20 and the upper shelf wires 21 and 22. The lower shelf wires 19 and 20 are supported from the lower surface in order to prevent the curtain from hanging down in the greenhouse due to their own weight, and one end is fixed to the mounting wires 10a and 11a and the other end is fixed to the central support member 16. Are stretched at predetermined intervals in the longitudinal direction of the greenhouse A. Moreover, the upper shelf wires 21 and 22 suppress the folding folds generated when the curtain is opened and closed, and the curtains wound by the wind from being separated from the lower shelf wires 19 and 20, and extend along the longitudinal side surface of the greenhouse A. In addition, one end is fixed to the mounting wires 10b and 11b disposed higher than the mounting wires 10a and 11a, and the other end is fixed to the upper portion of the central support member 16. It is stretched at predetermined intervals in the longitudinal direction of the greenhouse A.
[0003]
In this curtain opening and closing device, the guide pipes 17 and 18 and the curtains 14 and 15 are connected and fixed by a connecting tool called a packer having a substantially cylindrical cross-section opened by cutting a part of the peripheral surface in the axial direction. Yes. That is, after the edges of the curtains 14 and 15 are wound around the guide pipes 17 and 18, the opening of the packer is inserted from the outer peripheral surface so as to be widened, and sandwiched by utilizing the restoring force of the packer It is. A plurality of the above normal packers are arranged at predetermined intervals along the guide pipes 17 and 18, but instead of a part or all of them, for example, disclosed in Japanese Utility Model Publication No. 61-19644. The thing which has the protrusion piece which protrudes in the up-down direction from a coupling tool main-body part is also used. This projecting piece functions as a remaining-apart prevention member when the curtain is opened.
[0004]
[Problems to be solved by the invention]
However, in any case, since the curtain is fixed by utilizing its own elastic restoring force at the time of fitting, the curtain is firmly fixed because it cannot be used loosely. Is. Therefore, when the curtain made of a plastic film is shrunk by heat shrinkage, the guide pipe is bent. In particular, when a plurality of induction pipes are connected and used, the degree of meandering becomes large. Even if the curtain is guided in such a state, a gap is generated when the curtain is closed, and an unopened area becomes large when the curtain is opened. Further, when the curtain is contracted in the width direction, the portion fixed to the guide pipe is locally expanded to accelerate the deterioration of the curtain.
[0005]
The present invention has been made in view of the above circumstances, and while the curtain can be reliably connected, the curtain is allowed to move in the longitudinal direction on the guide pipe even in the mounted state where the curtain is connected. It is an object of the present invention to provide a greenhouse curtain connector that can avoid meandering of the induction pipe following the heat shrinkage, and a greenhouse curtain induction mechanism using the curtain connector.
[Means for Solving the Problems]
[0006]
In order to solve the above-described problems, the greenhouse curtain coupler of the present invention and the greenhouse curtain guiding mechanism using the curtain coupler pull or pull the curtain disposed in the greenhouse as the traveling wire travels. It is a greenhouse curtain connector used to connect the curtain to the guide pipe that opens and closes by gathering together, and when attached to the guide pipe, it has elasticity that can approach the outer surface of the guide pipe, The curtain can be held in a state of being sandwiched between the guide pipe, and the inner diameter is larger than the outer diameter of the guide pipe, and the curtain is sandwiched between the guide pipe and the longitudinal direction of the guide pipe. A holding portion slidable along the guide pipe, and a detachment preventing portion that prevents the detachment of the curtain against a tensile load acting in a direction substantially orthogonal to the guide pipe. And butterflies.
[0007]
Further, a long groove along the longitudinal direction is formed on the outer surface of the guide pipe, and the separation preventing portion is formed to protrude from the inner surface of the holding portion that slidably engages with the long groove. It is possible to provide the above-mentioned greenhouse curtain connector, characterized in that it is made up of linear projections.
[0008]
Further, the greenhouse curtain connector is provided on at least one of the upper part and the lower part of the holding part so as to protrude outward of the holding part, and prevents the curtain from being left behind. A remaining prevention tool can be provided.
[0009]
The greenhouse curtain guiding mechanism of the present invention includes a guide pipe that opens and closes by pulling or gathering a curtain disposed in the greenhouse as the traveling wire travels, and for connecting the curtain to the guide pipe. A curtain curtain guiding mechanism for use in a greenhouse curtain, wherein the guide pipe has a long groove formed in an outer surface along a longitudinal direction thereof, and the curtain coupler is When mounted on the guide pipe, it has elasticity that allows it to be close to the outer surface of the guide pipe, can be held in a state where the curtain is sandwiched between the guide pipe, and the inner diameter is larger than the outer diameter of the guide pipe A holding portion slidable along a longitudinal direction of the guide pipe with the curtain sandwiched between the guide pipe and a long groove of the guide pipe, And a linear protrusion that protrudes on the inner surface of the holding portion and functions as a separation preventing portion that prevents the curtain from separating against a tensile load acting in a direction substantially orthogonal to the To do.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a view showing a curtain guiding mechanism 1 of a greenhouse curtain opening / closing device according to an embodiment of the present invention, and includes a guide pipe 2 and a curtain connector 3.
[0011]
As shown in FIG. 2, the guide pipe 2 is composed of a pipe material having a deformed cross section having long grooves 21 and 22 along the longitudinal direction. The guide pipe 2 having such a shape is that the present invention is configured so that the curtain can be slid in the longitudinal direction of the guide pipe 2 while the curtain is connected to the guide pipe 2 by the curtain connector 3. Although it is the biggest feature, it is because it is necessary to hold | maintain so that a curtain may not detach | leave from the guide pipe 2 simultaneously.
[0012]
Specifically, in the present embodiment, there are long grooves 21 and 22 having a predetermined width formed at opposed positions slightly above the center of the pipe as viewed from the cross section along the longitudinal direction. It has an arc portion 23 at the upper part and a trapezoidal portion 24 at the lower part, which is partially missing the portion corresponding to the bottom part. The curtain 8 sandwiched between the guide pipe 2 and the curtain connector 3 formed in such a cross-sectional shape is wound along the cross-sectional shape of the guide pipe 2. That is, although the inner diameter of the curtain connector 3 described later is slightly larger than the outer diameter of the guide pipe 2, the curtain 8 is moved along the long grooves 21 and 22 by attaching the curtain connector 3 to the guide pipe 2. Since it has the linear protrusion 32 that functions as a separation preventing portion that is folded and engaged, it can be easily detached even if a tensile load acting in a direction substantially orthogonal to the guide pipe 2 occurs due to the weight of the curtain 8 or the like. It has a configuration that does not. However, the induction pipe 2 is not limited to such a shape as long as it performs the above-described function. For example, a shape close to a substantially circular cross section with a long groove may be used.
[0013]
Long grooves 21 and 22 of a predetermined width formed linearly along the longitudinal direction on the outer surface of the guide pipe 2 are associated with linear protrusions 32 provided in a holding portion 31 of the curtain connector 3 described later. Thus, the curtain 8 is prevented from being detached, and the direction and range in which the curtain coupler 3 slides on the guide pipe 2 are restricted. The long grooves 21 and 22 only have to be formed so as to fulfill such a function. From the viewpoint of ease of molding, all of the guide pipe 2 from one end to the other end in the longitudinal direction as shown in FIG. However, it may be partially provided by dividing into a plurality of predetermined lengths. Further, in the present embodiment, when the guide pipe 2 is connected and used, the curtain connector 2 can always be mounted from the same direction even if a plurality of guide pipes 2 to be connected are arranged in the left-right direction. Long grooves 21 and 22 are provided symmetrically as possible. However, although such convenience is lacking, it is also possible to adopt a configuration in which the long grooves 21 and 22 are provided in only one of them.
[0014]
The long grooves 21 and 22 are formed in a substantially U-shaped cross-sectional shape as shown in FIG. Such a cross-sectional shape may be a U-shape or other shapes, but is arbitrarily selected in consideration of the difficulty of detaching the curtain 8 when a tensile load acting in a direction substantially orthogonal to the longitudinal direction is generated. . Further, the width of the long grooves 21 and 22 is selected in the same manner, but the linear protrusion 32 is engaged with at least the guide pipe 2 held by the curtain coupler 3 and the curtain 8 is sandwiched therebetween, and A size that allows the guide pipe 3 to slide in the longitudinal direction without difficulty is required.
[0015]
As shown in FIG. 3A, the curtain coupler 3 is provided with an opening 31 a that is partly cut out along the axial direction and functions as an insertion port for the guide pipe 2. And has a holding portion 31 that exhibits elasticity close to the outer surface of the guide pipe 2, and a linear protrusion 32 is formed on the inner surface of the holding portion 31. A raw material is not limited, For example, metals, such as stainless steel, and a hard plastic can be used.
[0016]
More specifically, the shape of the holding portion 31 corresponds to the outer shape of the guide pipe 2, and the arc portion 31 of the guide pipe 2, the tapered surface portion 34 corresponding to one tapered portion 24b of the trapezoidal portion 24, and the trapezoidal portion. 24 has a flat surface 35 corresponding to the lower bottom 24a. Further, a protruding inclined piece 36 that slightly rises obliquely upward from the flat surface 35 is formed along the other tapered portion 24c of the guide pipe 2, and this protruding inclined piece 36 and the arc portion 31 are formed. An opening 31a serving as an insertion port for the guide pipe 2 is formed between the end edge 31b of the guide pipe 2 and the edge 31b. A linear protrusion 32 is formed along the axial direction of the holding portion 31 at a position corresponding to one long groove 21 of the guide pipe 2 near the boundary between the arc portion 31 and the tapered surface portion 34. Has been. Note that the inner diameter of the holding portion 31 is slightly larger than the outer diameter of the guide pipe 2. That is, the inner diameter of the guide pipe 2 is formed so that a gap with a predetermined interval is formed so that the inner surface of the holding portion 31 does not adhere to the outer surface of the guide pipe 2. The predetermined interval can be slid along the longitudinal direction of the guide pipe 2 even when the curtain 8 is sandwiched between the guide pipe 2 and held, and the curtain 8 is securely held by the guide pipe 2. As described above, the thickness of the curtain 8 is determined as appropriate.
[0017]
Moreover, although the cross-sectional shape of the linear protrusion part 32 may be a rectangle, a trapezoid, etc., in this Embodiment, it forms in the substantially U shape. If formed in this way, a corner is not formed at the tip of the linear protrusion 32, and can be easily engaged with the long groove 21 of the guide pipe 2, and the curtain 8 is not damaged.
[0018]
The curtain connector 3 formed as described above is mounted as shown in FIG. 1 by pressing the opening 31a against the outer periphery of the curtain 8 with one end edge of the curtain 8 wound around the guide pipe 2. Is done. Here, in FIG. 1, reference numeral 9 denotes a traveling wire wound around a driving take-up drum (not shown) or the like and laid around a guide pulley (not shown). Is opened and closed by traveling and moving between the upper shelf wire 6 disposed above and the lower shelf wire 7 disposed below by the traveling wire 9 and collecting or pulling the curtain 8 together. Can do. According to this embodiment, when the curtain 8 contracts in the width direction due to thermal contraction, the curtain coupler 3 moves along with the curtain 8 along the longitudinal direction of the guide pipe 2 following this. Alternatively, only the curtain 8 moves in the shrinking direction without moving the curtain coupler 3. For this reason, it can prevent that the tension | tensile_strength generate | occur | produces in the curtain 8, and it is torn or the induction | guidance | derivation pipe 2 bends.
[0019]
The curtain connector 3 is provided with at least one of the upper part and the lower part of the holding part 31, preferably both, as shown in FIG. 5 is preferably provided. In the present embodiment, as shown in FIG. 3, the upper leftover prevention device 4 is formed by being bent at a predetermined angle, and has two opposing end portions 41a and 42a that are bent in the horizontal opposing direction at the tip portions. It consists of a bent bar-like body 41, 42. These bent rod-like bodies 41 and 42 are each near the top of the curtain coupler 3 and at intervals such that a part of the opposed end portions 41a and 42a overlap with the longitudinal center position of the curtain coupler 3 interposed therebetween. And standing up. As shown in FIG. 1, the upper-side remaining prevention device 4 configured in this way is located above the curtain 8 from between the opposed end portions 41 a and 42 a when the curtain connector 3 is mounted on the guide pipe 2. The stretched upper shelf wire 6 is inserted and arranged. Thus, when guiding the curtain 8 in the closing direction or the opening direction, at least one of the bent rod-like bodies 41 and 42 suppresses a part of the curtain 8 that is left behind over the guide pipe 2. .
[0020]
As shown in FIG. 4, the lower leftover prevention tool 5 is formed by bending a wire member or the like into a substantially U shape, and includes two vertical portions 51, 52 and end portions of the vertical portions 51, 52. In addition to bending extensions 53 and 54 formed by bending and crossing each other, tip ends of the bending extensions 53 and 54 are formed with tip engagement portions 55 and 56 formed by bending inwardly. The front end engaging portions 55 and 56 are attached to the engaging holes 33a and 33b formed in the protrusions provided in the lower portion of the holding portion 31 of the curtain coupler 3 so as to be rotatable. As shown in FIG. 1, when the curtain connector 3 is attached to the guide pipe 2, the lower-side remaining prevention tool 5 configured as described above is provided with the lower shelf wire 7 stretched below the curtain 8. Insert and arrange in the inner space. Thus, when the curtain 8 is guided in the closing direction, the two vertical portions 51 and 52 prevent a part of the curtain 8 from passing through the guide pipe 2 and being left behind. Note that the front end engaging portions 55 and 56 of the lower remnant prevention tool 5 are pivotally attached to the engagement holes 33a and 33b formed in the lower part of the curtain coupler 3, so that they are attached when the curtain 8 is opened and closed. Even if it makes contact with a wire, it will not be damaged.
[0021]
FIG. 5 and FIG. 6 show other embodiments of the upper misalignment prevention device.
5 has a vertical portion 411c, 411d formed by bending a wire member in a substantially U shape, and a horizontal portion 411e positioned between the vertical portions 411c, 411d, Protrusions formed at the upper part of the curtain connector 3, which are formed with tip engagement portions 411 a and 411 b formed in a substantially U shape by curving the tips of the two vertical portions 411 c and 411 d inward. The tip engagement portions 411a and 411b are detachably engaged with the engagement holes 311a and 312a formed in the 311 and 312 respectively. In the present embodiment, the engagement holes 311a and 312a are formed to face each other at a position on a line that slightly crosses the central axis of the curtain coupler 3. That is, if the front end engaging portions 411a and 411b of the upper approaching residual prevention tool 411 are engaged and mounted in the engagement holes 311a and 312a formed in this way, the load due to the weight of the curtain 8 gathered together is applied. Even if it occurs, the tip engagement portions 411a and 411b do not rotate in the engagement holes, and can easily prevent the upper approaching residue prevention tool 411 from falling down due to its own weight load of the curtain 8.
[0022]
6 is composed of one rod-like body 412a bent and bent into a substantially L-shape, and the other rod-like body 412b having an engagement hole 412c formed near one end thereof. These are fixed to the vicinity of each end in the upper part of the curtain connector 3. A hook portion 412d is formed at the tip of one rod-like body 412a. After the upper shelf wire 7 stretched above the curtain 8 is inserted into the inner space, the hook portion of one rod-like body 412a is inserted. By engaging 412d with the engagement hole 412c of the other rod-shaped body 412b, the upper shelf wire 7 can be inserted.
[0023]
5 and 6 are compared with those shown in FIG. 1 to FIG. 3, the upper curtain remnant prevention devices 411 and 412 are provided for the curtain 8 left over the guide pipe 2 when the curtain 8 is opened and closed. It is possible to support a part more widely. Therefore, when it is necessary to more reliably prevent the curtain 8 from being left behind, the upper curtain leftover prevention tool according to the embodiment of FIGS. 5 and 6 can be used.
[0024]
As described above, if the curtain connecting tool 3 is provided by configuring the upper catching prevention tools 4, 411, 412 and the lower gathering prevention tool 5 integrally with the holding part 31, There is no need to attach a separate prevention tool separately. Further, when the curtain 8 is contracted, only the curtain 8 can move on the guide pipe 2 as described above, so that the engagement with the upper shelf wire 6 and the lower shelf wire 7 is maintained. Further, even if the curtain coupler 3 moves following the contraction of the curtain 8, it can be easily returned directly above and below the lower shelf wire 6 and the upper shelf wire 7. In addition, although it is possible to arrange the curtain coupling device 3 provided with the unloading prevention tools 4, 411, 412, and 5 along the guide pipe 2 at predetermined intervals, a part of them is a staying prevention device. The curtain 8 can also be configured to be held by a curtain connector made up of only the holding part 31 that does not have the.
[0025]
【The invention's effect】
The greenhouse curtain coupling tool of the present invention and the greenhouse curtain guiding mechanism using the curtain coupling tool can be slid along the longitudinal direction of the guiding pipe when the curtain is coupled to the guiding pipe. It is a simple configuration. Therefore, even if the curtain shrinks in the width direction, the guide pipe does not meander or the curtain is not damaged. In addition, the arrangement position of the curtain coupler can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is a perspective view showing main parts of a greenhouse curtain connector and a guiding mechanism according to an embodiment of the present invention.
FIG. 2A is a perspective view of the guide pipe according to the embodiment, and FIG. 2B is a cross-sectional view of the guide pipe.
FIG. 3A is a perspective view of the curtain connector according to the embodiment, and FIG. 3B is a cross-sectional view of the curtain connector.
FIG. 4 is a front view showing a lower leftover prevention device according to the embodiment.
FIG. 5 is a perspective view showing another embodiment of the upper curtain remnant prevention device.
FIG. 6 is a perspective view showing another embodiment of the upper curtain remnant prevention device.
FIG. 7 is a conceptual diagram for explaining the operation of a conventionally used greenhouse curtain opening / closing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guidance mechanism of curtain for greenhouse 2 Guide pipe 3 Curtain connector 4,411,412 Upper leftover prevention tool 5 Lower leftover prevention tool

Claims (4)

A greenhouse curtain connector used to connect the curtain to a guide pipe that opens and closes by pulling or gathering curtains disposed in the greenhouse as the traveling wire travels,
When attached to the guide pipe, the guide pipe has elasticity capable of approaching the outer surface of the guide pipe, can be held in a state where the curtain is sandwiched between the guide pipe, and the inner diameter is larger than the outer diameter of the guide pipe. A holding part that is slidable along the longitudinal direction of the guide pipe with the curtain sandwiched between the guide pipe and the guide pipe;
A greenhouse curtain coupler, comprising: a detachment preventing portion that prevents detachment of the curtain against a tensile load acting in a direction substantially orthogonal to the guide pipe. A long groove along the longitudinal direction is formed on the outer surface of the guide pipe, and the separation preventing portion is slidably engaged with the long groove, and is linearly formed to protrude from the inner surface of the holding portion. The greenhouse curtain connector according to claim 1, comprising a projection. It is provided on at least one of the upper part and the lower part of the holding part so as to protrude outwardly of the holding part, and is provided with a left behind prevention tool that prevents the curtain from remaining behind. The greenhouse curtain connector according to claim 1 or 2. A greenhouse curtain comprising: a guide pipe that opens and closes by pulling or gathering curtains disposed in a greenhouse as the traveling wire travels; and a curtain connector used to connect the curtain to the guide pipe. The induction mechanism of
The guide pipe has a long groove formed along the longitudinal direction on the outer surface thereof,
The curtain coupler is provided with elasticity capable of being close to the outer surface of the guide pipe when mounted on the guide pipe, and can be held in a state where the curtain is sandwiched between the guide pipe and an inner diameter thereof. A holding portion that is larger than the outer diameter of the pipe and is slidable along the longitudinal direction of the guide pipe with the curtain sandwiched between the guide pipe and a long groove of the guide pipe so as to be slidable And a linear protrusion formed on the inner surface of the holding portion that functions as a separation preventing portion that prevents the curtain from being detached against a tensile load acting in a direction substantially orthogonal to the guide pipe. A greenhouse curtain guiding mechanism characterized by that.

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