JP5984288B2 - Greenhouse curtain mechanism - Google Patents

Description

  The present invention relates to a greenhouse curtain mechanism that functions to partition an upper space in a greenhouse and enhance a heat retaining effect, a light shielding effect, and the like by opening and closing a curtain member disposed at a predetermined height in the greenhouse.

  Patent Document 1 discloses a greenhouse curtain device that adjusts the indoor temperature and the like by disposing a curtain member for heat insulation and light shielding made of a plastic film or the like in an upper space in a greenhouse and opening and closing the curtain member. ing. Although various types are disclosed in Patent Document 1, among these, as shown in FIGS. 1 to 3 of Patent Document 1, the shape of the roof portion viewed from the side of the wife is mountain-shaped. In the greenhouse, the base edge of one curtain member is fixed near one side of the greenhouse, the leading edge is connected to the leading pipe, and the leading pipe moves between the one side and the top of the greenhouse. The one curtain member opens and closes, and similarly, the base edge of the other curtain member is fixed near the other side surface of the greenhouse, the leading edge is connected to the leading pipe, and the leading pipe is near the other side surface. And the other curtain member is opened and closed by moving between the above and the vicinity of the top of the greenhouse.

  Each lead pipe moves while being connected to a drive wire. The drive wire includes a top pulley member disposed near the top of the greenhouse, a side pulley member disposed on the side surface of the greenhouse (one of the side pulley members is for turning), and one of the side pulley members. And a drive drum disposed in the vicinity. One end of the drive wire is wound around the drive drum, and one side pulley member, a top pulley member, and the other side pulley member (direction change pulley member) are wound in this order, reversed, and again, the top pulley member and It is wound around one side pulley member, and the other end is wound around the drive drum.

  Thereby, the driving wire can have a forward traveling portion that travels in the forward direction according to the rotational direction of the driving drum, and a reverse traveling portion that travels in the opposite direction, on the contrary, For example, the leading pipe in which the leading edge of the one curtain member is connected to the forward traveling portion is connected, and the leading pipe in which the leading edge of the other curtain member is connected to the opposite traveling portion. Therefore, when the leading pipes of the one and other curtain members move toward the vicinity of the top of the greenhouse, each curtain member is expanded, so that the closing direction operation for partitioning and closing the upper space of the greenhouse is performed. As the curtain moves, the curtain members are gathered together on the side surfaces, and the opening operation is performed to open the upper space.

  The greenhouse curtain device disclosed in Patent Document 1 is of a so-called two-sheet type that closes when the leading edge of each curtain member is directed near the top of the greenhouse and opens when directed in the opposite direction. Note that in FIGS. 1 to 3 of Patent Document 1, both the one curtain member and the other curtain member are of a two-layer type, but the basic operation of the two-sheet tension type is entirely a one-layer type. It is the same. In the case of this type, since the ceiling depth pipe is arranged near the top of the greenhouse along the longitudinal direction of the greenhouse, it is between the two leading pipes (between the leading edges of the two curtain members) when fully closed. There is a gap. In order to close this gap, a fixed-width film (fixed tension) is fixed above the ceiling depth pipe provided near the top, and each leading pipe moves down to the fixed tension. Corresponding to be fully closed.

  On the other hand, each curtain member is supported by a shelf line extending in the width direction of the greenhouse, but each curtain member not only partitions the upper space on the ceiling surface side of the greenhouse, but also the wife surface side from the shelf line. It hangs down. That is, each curtain member is provided with the ceiling surface coating | coated part located in the ceiling surface side of a greenhouse, and the wife surface coating | coated part (hanging part) hung down to the wife surface side.

  Therefore, in the fully closed position, the gap between the leading edges of the curtain members is not only between the ceiling surface covering portions but also between the wife surface covering portions (hanging portions). Not only is there a fixed tension on the side of the wife. In this case, when the fixing tension that hangs down to the end face comes into contact with the end of the leading pipe, the operation of the leading pipe is hindered. For this reason, the fixing tension on the end face side is hung down to a position away from the lead pipe by a predetermined distance. Accordingly, there is a predetermined gap between the fixing tension hanging down to the end face side and the end face covering portion of each curtain member, and there is a problem in terms of hermeticity. Further, in addition to the fixing tension for covering the ceiling surface, it is necessary to provide the fixing tension for the wife surface covering, and it is necessary to provide a large number of members.

  On the other hand, in view of the above points, the present applicant provides, as Patent Document 2, a rod-like member that is pivotally supported at the end portion of each leading pipe, and this rod-like member is attached to the tip edge of the end face covering portion (hanging portion). A technique is disclosed in which a portion of the end face covering portion (hanging portion) is overlapped by connecting and rotating a rod-like member.

JP 2008-29314 A JP 2011-205910 A

  Although the technique of patent document 2 can eliminate the problem of patent document 1, in the actual site, it may take time to adjust the rod-shaped member to rotate smoothly, and it has a simpler structure. Therefore, there has been a demand for the development of a technique capable of improving the sealing performance without installing a fixing for covering the wife surface.

  The present invention has been made in view of the above, and in the case where the curtain member is provided with two sheets, the sealing performance by the curtain member is improved with a simpler structure without installing a fixing tension for covering the end face. It is an object to provide a greenhouse curtain mechanism that can be installed easily.

In order to solve the above-described problem, the greenhouse curtain mechanism of the present invention is provided in a first manner so as to be deployable between one side surface of a pair of side surfaces facing the greenhouse and a midway position between the pair of side surfaces. A greenhouse curtain mechanism comprising: a curtain member; and a second curtain member provided to be deployable between the other side surface of the pair of side surfaces and a midway position between the pair of side surfaces, Each of the first and second curtain members has an outer edge portion located in the vicinity of each side surface, each inner edge portion is connected to the first and second guide members, and both are located on the ceiling surface side of the greenhouse. A corresponding ceiling surface covering portion and a hanging portion that hangs down on the other pair of side surfaces different from the pair of side surfaces, and between the one side surface and the other side surface constituting the pair of side surfaces , The first and second cartes A driving wire for a ceiling surface covering portion to which each ceiling surface covering portion of the member is connected, and a driving wire for a hanging portion to which an inner edge portion of each hanging portion of the first and second curtain members is connected are provided. In each of the forward traveling portion and the reverse traveling portion of the hanging portion driving wire, the ceiling surface covering portions of the first and second curtain members connected to the first guide member and the second guide member are respectively provided. A stopper that is provided at a position that passes through the unfolded end position, and that determines the unfolded end position of the inner edge of each hanging part of each of the first and second curtain members, and each of the first and second curtain members It is characterized in that a part of each of the hanging parts overlaps with each other at the terminal position when the inner edge of the hanging part is unfolded.

  Pulley members are respectively provided at midway positions of the forward running portion and the reverse running portion of the hanging portion drive wire, and the pulley members are arranged in the forward running portion and the reverse running portion, respectively. It is preferable that the first and second curtain members are arranged forward of the traveling direction from the end positions of the ceiling surface covering portions when deployed, and the pulley members serve as the stoppers.

  Each ceiling surface covering portion of the first and second curtain members is subjected to a force greater than a predetermined value applied to the ceiling surface covering portion drive wire via the first guide member and the second guide member, respectively. It is preferable that the structure is connected by an engagement member with a slip function that moves relative to the ceiling surface covering portion drive wire. It is preferable that the inner edge part of each hanging part of the said 1st and 2nd curtain member is the structure connected with the engaging member with a slip function which moves relatively with respect to the said hanging part drive wire.

  A ceiling gap covering material that is in contact with the first guide member and the second guide member when the first and second curtain members reach the end position when the ceiling surface covering portions are unfolded is provided. Is preferred. In at least one of the first guide member, the second guide member, and the ceiling gap covering material, it is preferable that an elastic member is provided at a portion in contact with each other. It is preferable that the drive wire for the ceiling surface covering portion and the drive wire for the hanging portion are driven and controlled by the same drive portion.

The greenhouse curtain mechanism of the present invention is provided with a hanging portion driving wire to which the inner edge of each hanging portion of the first and second curtain members is connected in addition to the ceiling surface covering portion driving wire, Deploying end positions of the ceiling surface covering portions of the first and second curtain members connected to the first guide member and the second guide member, respectively, on the forward running portion and the reverse running portion of the driving wire for the hanging portion And a stopper for determining a terminal position at the time of expansion of the inner edge of each hanging part of each of the first and second curtain members, and a stopper of the inner edge of each hanging part of each of the first and second curtain members. In the terminal position at the time of deployment, a part of the inner edge side of each hanging part overlaps each other.

  Each hanging part is connected to the hanging part drive wire, and the inner edge part of each hanging part moves to a position passing through the terminal position when the ceiling surface covering parts of the first and second curtain members are deployed. For this reason, in the state where the ceiling surface covering portion is most unfolded, the sagging portions further overlap each other. Since it has a simple configuration without being accompanied, it is possible to provide a greenhouse curtain mechanism that is lower in cost and has a higher sealing property than conventional ones, and further, installation work on site is easy.

FIG. 1 is a diagram showing a schematic configuration when a curtain mechanism for a greenhouse according to an embodiment of the present invention is applied to a single-building greenhouse, and each curtain member is in a fully opened state. FIG. 2 is a diagram in which each curtain member in FIG. 1 is in a developed state (fully closed state). FIG. 3 is a view for explaining the operation of the greenhouse curtain mechanism according to the embodiment, and (a) shows a state before the ceiling surface covering portion and the hanging portion of each curtain member are fully closed. (B) shows the state in which the first and second guide members are in contact with the ceiling gap covering material, and (c) is a diagram showing a state in which the hanging portions overlap each other and are fully closed. FIG. 4 is a view taken along arrows IV-IV in FIG. 3 showing the main part of the greenhouse curtain mechanism according to the embodiment.

  Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. 1-4 is a figure for demonstrating the curtain mechanism 1 for greenhouses which concerns on one Embodiment of this invention, In this embodiment, the curtain mechanism 1 for greenhouses is applied to a single-building greenhouse. Yes. As shown in FIGS. 1 to 4, the greenhouse curtain mechanism 1 includes a ceiling surface covering portion drive wire 10, a hanging portion drive wire 20, a first guide member 31, a second guide member 32, and a first curtain member 41. The second curtain member 42, the ceiling gap covering material 50, the drive unit 60, and the like.

  The ceiling surface covering portion drive wire 10 is a member that travels to open and close a first curtain member 41 and a second curtain member 42 described later, and is driven by a drive portion 60 as shown in FIG. Here, the drive unit 60 is disposed in the longitudinal direction of the greenhouse (the direction along the opposed wife surfaces) above the greenhouse, and is driven by a drive of a motor (not shown), and the drive shaft 61a. The first drive drum 61 mounted on 61a, the two side pulley members 62a and 62c disposed near one of the pair of opposing side surfaces of the greenhouse, and the top longitudinal direction of the greenhouse The first and second relay pulley members 62d and 62e, which are attached to the purlin 110 and disposed in the middle of one side surface of the greenhouse, and the side pulley member 62b disposed near the other side surface of the greenhouse are provided. Configured.

  The ceiling surface covering portion drive wire 10 is pulled out from the first drive drum 61, wound around one side pulley member 62a, and then passed through the first relay pulley member 62d to the side near the other side surface of the greenhouse. The other side pulley member 62c that is wound around the pulley member 62b and reversed, and this time passes through the second relay pulley member 62e and is arranged near the one side surface of the greenhouse and next to the one side pulley member 62a. And the other end of the first drive drum 61 is connected to the first drive drum 61. In addition, without installing each relay pulley member 62d, 62e, a pipe material (not shown) is suspended and supported on the purlin 110, and the ceiling surface covering portion drive wire 10 is directly wound around the pipe material. It is also possible to do. Since it is provided in this way, it includes a forward traveling unit 11 that travels in the forward direction according to the rotation direction of the first drive drum 61, and a reverse traveling unit 12 that is reversed by the side pulley member 62b and travels in the opposite direction. It becomes composition. The ceiling surface covering portion drive wires 10 are provided at predetermined intervals along a direction (usually the longitudinal direction of the greenhouse) facing the wife's face of the greenhouse.

  In the drive shaft 61a described above, the second drive drum 65 is provided near the other pair of side surfaces (that is, the “face surface” in the present embodiment) that is not the pair of side surfaces facing each other. One end of a hanging portion driving wire 20 is wound around the second driving drum 65, and the hanging portion driving wire 20 drawn out from the second driving drum 65 is wound around one side pulley member 66a. After that, it passes through the third relay top pulley member 66d, is wound around the side pulley member 66b in the vicinity of the other side of the greenhouse, and is reversed, and this time through the fourth relay pulley member 66e, near the one side of the greenhouse. Then, the other end is connected to the second drive drum 65 by being wound around the other side pulley member 66c provided next to the one side pulley member 66a. Accordingly, the hanging portion driving wire 20 of the present embodiment is driven almost in synchronization with the ceiling surface covering portion driving wire 10.

  The first guide member 31 and the second guide member 32 are respectively locked to the ceiling surface covering portion drive wire 10 via the engaging member 13 (see FIG. 3). Specifically, the first guide member 31 is locked to the forward traveling portion 11 of the ceiling surface covering portion drive wire 10, and the second guide member 32 is the opposite direction traveling portion 12 of the ceiling surface covering portion drive wire 10. It is locked to. As a result, the first guide member 31 connected to the forward traveling portion 11 moves from the vicinity of one side surface of the greenhouse to the vicinity of the purlin 110 at a predetermined height in the greenhouse according to the traveling of the driving wire 10 for the ceiling surface covering portion. The second guide member 31 that reciprocates between the two and travels in the other direction travel unit 12 reciprocates between the vicinity of the other side of the greenhouse at a predetermined height in the greenhouse and the vicinity of the purlin 110.

  As shown in FIG. 4, the engaging member 13 has two engaging pieces 13a and 13b, and has a structure in which the driving wire 10 for covering the ceiling surface is sandwiched between the engaging members 13a and 13b. Appropriate portions of the pieces 13 a and 13 b are fixed to the lower surfaces of the guide members 31 and 32 and moved together with the guide members 31 and 32. Further, between the engagement pieces 13a and 13b, for example, an elastic member (not shown) such as a metal spring or rubber that urges the engagement pieces 13a and 13b in a direction to bring them closer to each other is disposed. As a result, the engaging member 13 moves with the traveling of the ceiling surface covering portion drive wire 10, while the engaging member 13 comes into contact with any member and stops its movement during traveling. Thus, when a force exceeding a predetermined value is applied and the force exceeds the force for clamping the ceiling surface covering portion drive wire 10 due to the elasticity of the elastic member, the slipping between the engagement pieces 13a and 13b occurs. The thing with the slip function to which the drive wire 10 for ceiling surface coating | coated parts moves relatively is used. As will be described later, when the first guide member 31 and the second guide member 32 are in contact with the ceiling gap covering material 50, the movement of the ceiling surface covering portions 411 and 421 of the curtain members 41 and 42 in the unfolding direction stops. The hanging parts 412 and 422 are configured to move further in the deploying direction beyond the terminal position when the ceiling surface covering parts 411 and 421 are deployed. In the present embodiment, the hanging portion driving wire 11 for expanding the hanging portions 412 and 422 is driven by the driving portion 60 common to the ceiling surface covering portion driving wire 10 to drive the hanging portion driving wire 11. In other words, since the driving wire 10 for the ceiling surface covering portion also moves substantially synchronously, the engagement member 13 provided on the first guide member 31 and the second guide member 32 should use a slip function as described above. Is preferred. In addition, as the engagement member 13 with a slip function, the thing disclosed by patent 4180209 can also be used, for example.

  The first curtain member 41 is stretched along a direction between a pair of opposing side surfaces of the greenhouse (in this embodiment, the side surface along the width direction orthogonal to the depth direction of the greenhouse, hereinafter simply referred to as “side surface”). The ceiling surface covering portion 411 that is supported by the installed shelf line 120 and divides the upper space on the ceiling surface side of the greenhouse, and the other pair of opposing side surfaces (in this embodiment, facing along the depth direction of the greenhouse) It is a configuration that includes a hanging portion (wife surface covering portion) 412 that hangs downward from the shelf 120 and covers the wife surface side, which is located on the side). Further, the inner edge 411a of the ceiling surface covering portion 411 of the first curtain member 41 is connected to the first guide member 31, and the outer edge portion 411b of the ceiling surface covering portion 411 is positioned at a predetermined height near one side surface. The base end arrangement portion 130 is fixed.

  Similarly, the second curtain member 42 is also supported by the shelf line 120 and hangs downward from the ceiling surface covering portion 421 that partitions the upper space on the ceiling surface side, and the shelf line 120 that is located on the wife surface side. And a hanging portion (face surface covering portion) 422 covering the side, and the inner edge portion 421a of the ceiling surface covering portion 421 of the second curtain member 42 is connected to the second guide member 32, and the ceiling surface covering portion An outer edge portion 421b of 421 is fixed to a proximal end arrangement portion 140 located at a predetermined height near the other side surface. Therefore, when the first and second guide members 31 and 32 move according to the traveling of the ceiling surface covering portion drive wire 10, the first and second curtain members 41 and 42 are connected via the connected inner edge portions 411a and 421a. Is opened and closed. In addition, the base end arrangement | positioning parts 130 and 140 should just be what can fix the outer edge parts 411b and 421b of each curtain member 41 and 42, for example, the wire and pipe material which were stretched along the longitudinal direction of the side surface of a greenhouse Etc.

  Here, the hanging portions 412 and 422 of the first and second curtain members 41 and 42 are connected to the hanging portion driving wire 20. The hanging portion driving wire 20 is reversed by the forward traveling portion 21 traveling in the forward direction according to the rotation direction of the second driving drum 65 and the side pulley member 66b near the other side surface and traveling in the opposite direction. As described above, it is disposed closer to the wife surface than the ceiling surface covering portion drive wire 10. The inner edge portion 412a of the hanging portion 412 of the first curtain member 41 is connected to the forward running portion 21 via the engaging member 23, and the inner edge portion 422a of the hanging portion 422 of the second curtain member 42 is the opposite running portion. 22 is connected via an engaging member 23 (see FIG. 3).

  The third relay pulley member 66d provided at a midway position between the pair of side surfaces of the greenhouse winds the middle of the forward traveling portion 21 of the hanging portion drive wire 20 and is opposite to the fourth relay pulley member 66e. The traveling part 22 is wound halfway. Since the first relay pulley member 62d and the second relay pulley member 62e that support the ceiling surface covering portion drive wire 10 are supported by the purlin 110 near the top of the greenhouse, as shown in FIG. The third relay pulley member 66d and the fourth relay pulley member that are set so as to exist substantially at the same position when viewed from the direction (the direction of FIG. 3), but support the hanging portion driving wire 20 Similarly, when viewed from the wife surface direction (the direction of FIG. 3), 66e is not in the same position but in a positional relationship shifted from each other. Specifically, as shown in FIGS. 1 and 3, the third relay pulley member 66 d is arranged so that the first relay pulley member 62 d extends along the forward direction when deployed from one side surface to the other side surface. The fourth relay pulley member 66e is provided in the middle of the second relay pulley member 62e, and is located in the middle of the other side surface. The first relay pulley member 62d and the second relay pulley member 62e are provided in the middle of one side surface, beyond the positions of the first relay pulley member 62d and the second relay pulley member 62e.

  Thereby, when the inner edge part 412a of the hanging part 412 of the first curtain member 41 moves from one side surface to the other side surface during deployment, the purlin 110 is located approximately in the middle between the one side surface and the other side surface. In addition, the inner edge portion 422a of the hanging portion 422 of the second curtain member 42 moves from the other side surface to the one side surface when unfolded. When moving in the direction, it is possible to move to the position passing through the positions of the purlin 110, the first relay pulley member 62d, and the second relay pulley member 62e located approximately in the middle between the other side surface and the one side surface. As a result, the hanging part 412 of the first curtain member 41 and the hanging part 422 of the second curtain member 42 partially overlap (see FIG. 3C).

  Therefore, the engaging member 23 that connects the inner edge portions 412a and 422b of the hanging portions 412 and 422 to the hanging portion driving wire 20 is moved more than the engaging member 13 that is connected to the ceiling surface covering portion driving wire 10. Therefore, basically, there is no need to provide a function of moving relative to the hanging portion drive wire 20, but the guide members 31 and 32 that are long in the depth direction may cause meandering during operation. Therefore, in order to make the opening and closing operation of the curtain members 41 and 42 smoother, the engagement member 23 is also provided with a slip function, like the engagement member 13 for the ceiling surface covering portion drive wire 10. It is preferable to use it. Further, as described above, the engaging member 23 pulls the hanging portions 412 and 422. However, when the engaging member 23 comes into contact with the third relay pulley member 66d and the fourth relay pulley member 66e, the engaging member 23 drops. The movement at the time of expansion | deployment of the part 412 and 422 stops. Thus, the third relay pulley member 66d and the fourth relay pulley member 66e also serve as a stopper. At the time of deployment, the operation of the hanging portion drive wire 20 may be stopped at the same time as the engaging member 23 comes into contact with the third relay pulley member 66d and the fourth relay pulley member 66e as stoppers. Since there is a delay at all, it is preferable that the hanging portion driving wire 20 can be relatively moved in the engaging member 23 at that time, and from this point, the engaging member 23 having a slip function should be used. Is preferred.

  In addition, it is desirable that the gap between the hanging parts 412 and 422 when overlapped is as small as possible from the viewpoint of hermeticity. As shown in FIG. 4, the third relay pulley member 66d and the fourth relay pulley member 66e are in a parallel state when viewed from the side, but the interval between the two is overlapped as it is. Since it is a gap between 412 and 422, it is preferable to set the gap as small as possible when viewed from the side of the third relay pulley member 66d and the fourth relay pulley member 66e.

  Next, the effect | action of the curtain mechanism 1 for greenhouses which concerns on this embodiment is demonstrated. First, it is assumed that the first and second curtain members 41 and 42 are fully opened. That is, as shown in FIG. 1, in the first curtain member 41, the first guide member 31 is positioned closer to the base end arrangement portion 130 on one side surface, and the second curtain member 42 has the second guide member 32 on the other side. It is located near the base end arrangement part 140 on the side surface. In this state, when the motor of the drive unit 60 is driven, the drive shaft 61a is rotationally driven. A first drive drum 61 and a second drive drum 65 are mounted on the drive shaft 61a, and these drive drums 61 and 65 rotate with the rotation of the drive shaft 61a.

  When the first drive drum 61 rotates, the ceiling surface covering portion drive wire 10 travels. When the ceiling surface covering portion drive wire 10 travels, the inner edge 411a of the ceiling surface covering portion 411 of the first curtain member 41 connected to the first guide member 31 connected to the forward traveling portion 11 is in the direction of arrow A. (See FIGS. 1 and 3A), that is, moving toward the purlin 110 and unfolding. Similarly, the second guide member 32 connected to the opposite direction traveling portion 12 of the ceiling surface covering portion drive wire 10 moves, and the inner edge portion 421a of the ceiling surface covering portion 421 of the second curtain member 42 moves in the direction of arrow A. It moves toward the direction of the purlin 110, ie, expands (see FIGS. 1 and 3A).

  The second drive drum 65 also rotates in synchronization with the first drive drum 61. Accordingly, the hanging portion driving wire 20 also travels in synchronization with the ceiling surface covering portion driving wire 10, and the inner edge portion 412a of the hanging portion 412 of the first curtain member 41 connected to the forward traveling portion 21 is provided. In addition, the inner edge portion 422a of the side surface covering portion 422 of the second curtain member 42 connected to the opposite direction traveling portion 22 is moved in the direction of the arrow A, that is, in the unfolding direction.

  The first and second guide members 31 and 32 stop moving when they reach the vicinity of the side edge of the ceiling gap covering member 50. Thereby, the ceiling surface covering portions 411 and 421 of the first and second curtain members 41 and 42 are in the most unfolded state (the state shown in FIG. 3B). On the other hand, the hanging portions 412 and 422 of the first and second curtain members 41 and 42 connected to the hanging portion driving wire 20 do not come into contact with the ceiling gap covering material 50. 421 does not stop at the end position when deployed, and continues to move. The hanging part 412 of the first curtain member 41 moves until the engaging member 23 comes into contact with the third relay pulley member 66d, and the hanging part 422 of the second curtain member 42 is moved by the engaging member 23 to the fourth relay pulley member. It moves until it contacts 66e. In addition, since the 1st drive drum 61 continues rotating during this time, the drive wire 10 for ceiling surface coating | cover parts also continues driving | running | working operation | movement. However, as described above, since the first and second guide members 31 and 32 are connected via the engagement member 13 with a slip function, the first guide member 31 and the second guide member 32 are in contact with the ceiling gap covering member 50 and Even if the movement is stopped, the ceiling surface covering portion drive wire 10 can be relatively moved within the engaging member 13, so that the operation of the hanging portion driving wire 20 is not restricted.

  2 and FIG. 3C, the inner edge portions 412a and 422a of the hanging portions 412 and 422 are near the purlin 110, which is the end position of each of the ceiling surface covering portions 411 and 421, as shown in FIGS. The position that has passed through each moving direction is the terminal position at the time of deployment. Accordingly, a part of each hanging part 412a, 422 near the inner edge part 412a, 422a overlaps. Further, the gap between the overlapped hanging portions 412 and 422 corresponds to the gap when the third relay pulley member 66d and the fourth relay pulley member 66e are viewed in parallel from the side surface direction. As described above, the gap between 66d and the fourth relay pulley member 66e can be made as small as possible to improve the sealing performance. Thereby, even if it does not provide the fixed tension of the wife face side, the wife face side can be closed.

  On the other hand, in the opening operation of the first and second curtain members 41, 42, the drive shaft 61a of the drive unit 60 rotates in the opposite direction to the unfolded state, and the ceiling surface covering portion drive wire 10 and the hanging portion drive wire 20 are moved. Both run in the opposite direction to when deployed. At this time, since there is no member that restricts the movement of the engaging members 13 and 23 connected to the wires 10 and 20, the engaging members 13 and 24 are both in the opening direction (arrows in FIG. 1). B direction). Since the ceiling surface covering portions 411 and 421 are connected to the first guide member 31 and the second guide member 32, their inner edge portions 411 a and 421 a are arranged at the proximal end by the first guide member 31 and the second guide member 32. The parts 130 and 140 are gathered together. When fully closed, the inner end edges 412a and 422a of the respective hanging parts 412 and 422 are positioned at the rear side in the opening direction with respect to the inner end edges 411a and 421a of the ceiling surface covering parts 411 and 421. Therefore, when opening (see FIG. 3C), the inner end edges 412a and 422a of the hanging parts 412 and 422 are more than the inner end edges 411a and 421a of the ceiling surface covering parts 411 and 421. It will be released late. Therefore, normally, the inner end edges 411a and 421a of the ceiling surface covering portions 411 and 421 reach and stop at the end position at the time of opening, but at this time, since the engaging member 13 has a slip function, The ceiling surface covering portion drive wire 10 moves relative to the engagement member 13 until the inner end edges 412a and 422a of the respective hanging portions 412 and 422 reach the terminal position at the time of opening.

  Accordingly, when fully opened, the first and second curtain members 41 and 42 are in positions where the ceiling surface covering portions 411 and 421 and the hanging portions 412 and 422 are brought closer to the base end arrangement portions 130 and 140. In addition, because there is no fixed tension on the wife surface, excellent lighting can be obtained.

  In the present embodiment, the ceiling gap covering material 50 is provided on the purlin 110. The ceiling gap covering material 50 is provided because there is a possibility that a slight gap may be generated when the first guide member 31 and the second guide member 32 are configured to be in direct contact with the purlin 110. If the area of the gap covering material 50 is too large, the lighting performance is lowered. Therefore, even if the area of the ceiling gap covering material 50 is small, the ceiling gap covering material 50 is made of an elastic material such as rubber or plastic film in order to improve the sealing performance when the first guide member 31 and the second guide member 32 are in contact with each other. It is preferable to configure the member. Or you may make it provide elastic members, such as rubber | gum and a plastic film, in the front end side of the expansion | deployment direction in the 1st guide member 31 and the 2nd guide member 32 instead of the ceiling clearance covering material 50. Further, when an elastic member such as rubber is provided on the distal end side in the developing direction of the first guide member 31 and the second guide member 32, the ceiling gap covering material 50 is not disposed and the purlin 110 is touched. Also, the gap at the time of deployment (when closed) can be reduced. Further, in the greenhouse without the purlin 110, the first guide member 31 and the second guide member 32 can be in direct contact with each other, but in this case, if an elastic member such as rubber is provided on the distal end side in the deployment direction, The gap at the time of deployment (at the time of closing) can be reduced.

  Further, in the above embodiment, the case where the roof portion is applied to a mountain-shaped greenhouse when viewed from the end face side has been described, but the roof portion can be applied to a greenhouse with a substantially horizontal flat roof. The present invention is not limited to the case where the first and second curtain members 41 and 42 are stretched in a mountain shape toward the approaching direction, but can also be applied to those stretched horizontally. In the above-described embodiment, the greenhouse curtain mechanism 1 of the present invention is applied to a single greenhouse. However, a relay pulley member is further provided in a valley portion between adjacent buildings, and a continuous-type greenhouse is provided. Of course, it is also possible to apply to.

DESCRIPTION OF SYMBOLS 1 Greenhouse curtain mechanism 10 Drive wire for ceiling surface covering part 11 Forward direction traveling part 12 Counter direction traveling part 20 Hanging part driving wire 21 Forward direction traveling part 22 Counter direction traveling part 31 First guide member 32 Second guide member 41 First curtain member 411 Ceiling surface covering portion 412 Hanging portion 42 Second curtain member 421 Ceiling surface covering portion 422 Hanging portion 50 Ceiling gap covering material 60 Drive portion 61 First driving drum 62d First relay pulley member 62e Second relay pulley member 65 Second driving drum 66d Third relay pulley member 66e Fourth relay pulley member

Claims (7)

A first curtain member provided in a deployable manner between one side surface of a pair of side surfaces facing the greenhouse and a midway position between the pair of side surfaces; the other side surface of the pair of side surfaces; A curtain mechanism for a greenhouse comprising a second curtain member provided so as to be deployable between a halfway position between the side surfaces of
Each of the first and second curtain members has an outer edge located in the vicinity of each side surface, and each inner edge is connected to the first and second guide members, both of which are on the ceiling surface side of the greenhouse A ceiling surface covering portion corresponding to the above and a hanging portion that hangs down on the other pair of side surfaces different from the pair of side surfaces,
The ceiling surface covering portion drive wire to which the ceiling surface covering portions of the first and second curtain members are connected between the one side surface and the other side surface constituting the pair of side surfaces, and the first And a driving wire for the hanging part to which the inner edge of each hanging part of the second curtain member is connected,
Deployment of the respective ceiling surface covering portions of the first and second curtain members connected to the first guide member and the second guide member in each of the forward traveling portion and the reverse traveling portion of the hanging portion drive wire. A stopper that is provided at a position that passes the end position, and that determines the end position when the inner edge of each hanging portion of the first and second curtain members is deployed;
A greenhouse curtain mechanism having a configuration in which a part of each hanging part overlaps with each other at a deployment end position of an inner edge part of each hanging part of each of the first and second curtain members .   Pulley members are respectively provided at midway positions of the forward running portion and the reverse running portion of the hanging portion drive wire, and the pulley members are arranged in the forward running portion and the reverse running portion, respectively. 2. The greenhouse curtain mechanism according to claim 1, wherein each of the first curtain curtain member and the second curtain member is disposed in front of the terminal position when the ceiling surface covering portion is unfolded, and the pulley member serves as the stopper. .   Each ceiling surface covering portion of the first and second curtain members is subjected to a force greater than a predetermined value applied to the ceiling surface covering portion drive wire via the first guide member and the second guide member, respectively. The greenhouse curtain mechanism according to claim 1, wherein the curtain mechanism is connected by an engaging member with a slip function that moves relative to the ceiling surface covering portion drive wire.   The inner edge part of each hanging part of the said 1st and 2nd curtain member is connected by the engaging member with a slip function which moves relatively with respect to the said hanging part drive wire. The greenhouse curtain mechanism described in 1.   The ceiling clearance covering material with which the first guide member and the second guide member are in contact with each other when reaching the terminal position when the ceiling surface covering portions of the first and second curtain members are deployed is provided. 5. The greenhouse curtain mechanism according to any one of 4 above.   The greenhouse curtain mechanism according to claim 5, wherein an elastic member is provided at a portion in contact with each other in at least one of the first guide member, the second guide member, and the ceiling gap covering material.   The greenhouse curtain mechanism according to any one of claims 1 to 6, wherein the ceiling surface covering portion driving wire and the hanging portion driving wire are driven and controlled by the same driving portion.

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