JP7291413B2 - curtain opener - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curtain opening/closing device for use in greenhouses, greenhouses, and the like.

In Patent Document 1, in a greenhouse such as a vinyl house, a curtain is installed on the ceiling side for heat retention, light shielding, etc., and a plurality of divided curtains are oriented in the longitudinal direction of the greenhouse and opened and closed at the same time. to control the temperature inside the greenhouse.

A plurality of curtains divided in this manner have one end attached to a fixed curtain end member parallel to the lateral direction of the greenhouse and the other end attached to a movable curtain end member provided on a long rack member. By moving in the direction, it is possible to open and close multiple curtains at the same time.

JP-A-11-56119

However, in the corners of the greenhouse, the curtains may be of odd dimensions in the corners of the greenhouse, and the distance between the fixed curtain end member and the moving curtain end member is such that the distance between the fixed curtain end member and the other centrally located fixed curtain end member moves. It does not necessarily match the distance between the curtain end members. For example, if the distance between the fixed curtain end member at the center and the movable curtain end member is 4 m, and the distance between the fixed curtain end member at the corner and the movable curtain end member is 2 m, the distance between the fixed curtain end member and the movable curtain end member at the corner is 2 m. If the rack member is moved 4 m, the tip of the rack member protrudes outward by 2 m from the corner of the greenhouse.

Therefore, it is conceivable not to install curtains in the corners of the greenhouse. As a result, there arises a problem that the crops in the greenhouse cannot be grown on average.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and to enable simultaneous opening and closing of all curtains by a common drive mechanism, even in a greenhouse that includes central curtains and corner curtains with different opening and closing distances. To provide a simple curtain opening/closing device.

A curtain opening and closing device according to the present invention for achieving the above object is arranged on the ceiling of a greenhouse, and has a moving pipe portion that reciprocates a predetermined moving distance along the longitudinal direction by a drive mechanism, and a moving pipe portion that is perpendicular to the longitudinal direction. a plurality of long curtain mounting portions fixed in parallel to the moving pipe portion at intervals of the predetermined movement distance facing the direction, and the moving pipe parallel to the long curtain mounting portions and at intervals of the predetermined movement distance; a plurality of horizontal sections fixedly arranged at predetermined positions separated from each other, and a long curtain having both ends attached to the long curtain mounting section and the horizontal sections, and driven by the drive mechanism. A curtain opening and closing device for opening and closing the long curtain by moving the long curtain mounting portion together with the portion, wherein the moving tube is used to open and close the short curtain shorter than the long curtain at the corner of the greenhouse. An extendable auxiliary tube is connected to the tip of the section, an insertable/removable rod is provided in the cylindrical body of the auxiliary tube, and a short curtain mounting portion for attaching the short curtain is arranged at the tip of the insertable/removable rod. Further, the short curtain is opened and closed through the auxiliary pipe portion together with the movement of the moving pipe portion.

According to the curtain opening/closing device according to the present invention, long curtains are arranged at equal intervals in the central part of the greenhouse, and short curtains are provided near the corners of the greenhouse and are shorter than the long curtains in the central part. Even in a greenhouse, all the curtains can be stably opened and closed at the same time by a common driving mechanism.

It is a perspective view of a greenhouse in which a curtain opening and closing device is installed. 4 is a configuration diagram of a moving tube portion and an auxiliary tube portion; FIG. It is a top view of the state which opened the curtain. It is a top view of the state which closed the curtain. FIG. 4 is an explanatory view of the operation of the auxiliary tube portion with respect to the moving tube portion;

FIG. 1 is a perspective view of a greenhouse H, such as a vinyl greenhouse, in which a curtain opening/closing device is installed. A body 1 is supported by a plurality of posts 2 erected from the ground. The frame 1 has two thick beam vertical beams 3a and 3b provided on both sides in the longitudinal direction of the greenhouse H, and the frame 1 has, for example, six horizontal beams on these vertical beams 3a and 3b. The parts 4a to 4f are bridged and fixed. The frame 1 is divided into five sections by these horizontal sections 4a to 4f, and long curtains 5 and short curtains 6 are attached to the respective sections so as to be openable and closable as indicated by arrows. Incidentally, the horizontal parts 4a and 4f on both sides of the frame 1 are thick beams.

The horizontal parts 4a to 4e are arranged at intervals of a distance A, for example, 4 m in the longitudinal direction, and the distance B between the horizontal parts 4e and 4f is about half the distance A, ie, 2 m. As a result, the greenhouse H has four compartments of distance A and one compartment of distance B.

At the center of the ceiling of the greenhouse H in the longitudinal direction, a moving pipe section 7 made of, for example, a rectangular tube having a length of A×3 is attached by a horizontal support section 4, for example, suspended. A rack portion (not shown) that meshes with the rotating gear of the drive mechanism is provided on a part of the moving tube portion 7, for example, along the lower surface thereof. By driving a drive mechanism such as a motor provided at the end of the greenhouse H, the moving tube portion 7 moves along the longitudinal direction of the greenhouse H, and a rotating gear that rotates forward and reverse within a range of distance A reciprocates via the rack portion. It is made to work.

Four rod-shaped long curtain mounting portions 8a to 8d are fixed to, for example, the upper surface of the moving tube portion 7 at intervals of a distance A so as to move together with the moving tube portion 7 in the longitudinal direction. These long curtain mounting portions 8a to 8d are provided parallel to the horizontal portions 4a to 4f, and their lengths in the short direction are substantially the same. is designed to slide.

Four long curtains 5 having a length of A when spread are attached between the horizontal parts 4a to 4d and the adjacent long curtain attachment parts 8a to 8d. The long curtain 5 is made of, for example, a synthetic resin sheet, and is opened and closed as necessary to keep the inside of the greenhouse H warm and to block light. Since both ends of the long curtain mounting portions 8a to 8d are located on the vertical portions 3a and 3b, even if the long curtain 5 is mounted, the long curtain mounting portions 8a to 8d will not sag under the load.

The distance B between the transverse parts 4e and 4f at the corners of the greenhouse H is 2 m as mentioned above. In this short distance B, a short curtain 6 similar to the long curtain 5 is used which has a length of B when unrolled.

In order to correspond to the short curtain 6, as shown in FIG. The auxiliary tube portion 10 is composed of a cylindrical body 20 connected to the distal end of the moving tube portion 7 and a rod-like insertion/removal rod 30 that can be inserted into and removed from the cylindrical body 20 . The lengths of the cylindrical body 20 and the insertion/removal rod 30 are approximately equal to the distance B, respectively. One end of the cylindrical body 20 is fitted and connected to the tip of the moving tube portion 7 as a fitting end 21 , and the other end is an open end 22 .

The insertion/removal rod 30 is inserted into and removed from the cylindrical body 20 via the open end 22 , and the other end protrudes outward from the cylindrical body 20 . A linear body 31 made of a steel wire or the like is attached to the tip of the insertion/removal rod 30. This linear body 31 is inserted through the moving tube portion 7 through the cylindrical body 20, and in the moving tube portion 7, It is connected to a plate-like locking end 32 that is larger than the inner diameter of the fitting end 21 .

One end of the insertion/removal rod 30 is tightly fitted into the open end 22 of the cylindrical body 20 so as to be slidable. Since it is locked to the end 21 , it does not move toward the cylindrical body 20 through the fitting end 21 .

A short curtain mounting portion 33 is fixed to the end of the insertion/removal rod 30 on the horizontal portion 4 f side, and the short curtain 6 is mounted between the horizontal portion 4 e and the short curtain mounting portion 33 .

FIG. 3 is a plan view of the curtain opening/closing device with the long curtains 5 and short curtains 6 opened to allow sunlight into the greenhouse H. FIG. 4 is a plan view with the long curtains 5 and short curtains 6 closed. It is a diagram. The closing of the long curtain 5 and the short curtain 6 shown in FIGS. 3 to 4 is performed by moving the moving tube portion 7 by a distance A along the longitudinal direction by the driving mechanism.

(a) to (e) shown in FIG. 5 are diagrams for explaining the action of the auxiliary tube portion 10 accompanying the movement of the moving tube portion 7. FIG. (A) shows a state in which the long curtain 5 and the short curtain 6 are open, and the long curtain mounting portions 8a to 8d fixed to the moving tube portion 7 are adjacent to the horizontal portions 4a to 4d, respectively, Between the long curtain mounting portions 8a to 8d and the horizontal portions 4a to 4d, four long curtains 5 are mounted in a reduced scale. A short curtain 6 is mounted between the short curtain mounting portion 33 and the transverse portion 4e in a reduced scale.

When the driving mechanism is driven to close the long curtain 5 and the short curtain 6, the moving tube portion 7 starts to move or move forward along the longitudinal direction. As shown in (b), the auxiliary pipe portion 10 moves forward together with the movement of the movable pipe portion 7, and the closing of the long curtain 5 and the short curtain 6 begins.

As shown in (C), when the movable tube portion 7 moves forward by the distance B, the tip of the insertion/removal rod 30 is tightly fitted into the open end 22 of the cylindrical body 20, so that the insertion/removal rod 30 moves toward the cylindrical body. Move forward with 20. When the short curtain mounting portion 33 fixed to the tip of the insertion/removal rod 30 reaches the horizontal portion 4f, the short curtain 6 is fully closed. In (C), the place where the insertion/removal rod 30 and the short curtain mounting portion 33 abut is not limited to the horizontal portion 4f, and may be a wall-like member provided at the corner of the greenhouse H.

After the end of the insertion/removal rod 30 has reached the horizontal portion 4, the insertion/removal rod 30 will not be inserted into the cylindrical body 20 even if the moving tube portion 7 continues to move thereafter. Therefore, the greenhouse H is not damaged by the protruding auxiliary pipe portion 10. - 特許庁

The moving tube portion 7 continues to move, and while inserting the insertion/removal rod 30 into the cylindrical body 20, goes through the state (d), reaches the state (e), and stops. The distance from (a) to (e) of the moving tube portion 7 corresponds to the predetermined moving distance A, and all the long curtains 5 are fully closed at (e). After the end of the insertion/removal rod 30 reaches the horizontal portion 4f in (C), the locking end 32 is separated from the cylindrical body 20 in the processes shown in (D) and (E).

In order to open the long curtain 5 and the short curtain 6 from the closed state, the moving tube portion 7 starts to move backward, and when the driving is performed in the order shown in FIGS. The curtain 6 is fully opened in the state of (a). At this time, the linear body 31 plays a role of pulling back the insertion/removal rod 30 into the cylindrical body 20 in the processes (c) to (b). Instead of the linear body 31, a compression coil spring that biases the insertion/removal rod 30 outward may be arranged in the cylindrical body 20. As shown in FIG.

Thus, according to the curtain opening and closing device of the present invention, the greenhouse H is provided with the long curtains 5 arranged at regular intervals and the short curtains 6 arranged near the corners of the greenhouse H. Also, all the curtains consisting of the long curtain 5 and the short curtain 6 can be opened and closed at the same time by a common driving mechanism.

In the embodiment, the moving pipe portion 7 is moved forward to close the long curtain 5 and the short curtain 6, and the moving pipe portion 7 is moved backward to open them. It is also possible to open it in the forward movement of 7 and close it in the backward movement.

In the embodiment, the auxiliary pipe part 10 is provided only at one corner in the longitudinal direction of the greenhouse H, but it is also possible to provide it at both corners in the longitudinal direction of the greenhouse H.

REFERENCE SIGNS LIST 1 frame 3 vertical section 4 horizontal section 5 long curtain 6 short curtain 7 moving tube section 8 long curtain attachment section 10 auxiliary tube section 20 cylindrical body 30 insertion/removal rod 31 linear body 32 locking end 33 short curtain attachment section

Claims (3)

A moving pipe portion arranged on the ceiling of the greenhouse and reciprocated along the longitudinal direction by a driving mechanism for a predetermined moving distance; A plurality of long curtain mounting portions fixed to the pipe portion, and a plurality of horizontal portions arranged in parallel with the long curtain mounting portions and separated from the movable pipe portion at intervals of the predetermined movement distance and fixed at predetermined positions. The long curtain has a hanging portion, and a long curtain having both ends attached to the long curtain mounting portion and the horizontal hanging portion. A curtain opening and closing device for opening and closing the
In order to open and close the short curtains shorter than the long curtains at the corners of the greenhouse, an extendable auxiliary pipe is connected to the tip of the moving pipe, and the auxiliary pipe can be inserted into and removed from the cylindrical body of the auxiliary pipe. A removable rod is provided, a short curtain mounting portion for mounting the short curtain is arranged at the tip of the insertion/removal rod, and the short curtain is opened and closed via the auxiliary pipe portion as the moving pipe portion moves. curtain opener. 2. The short curtain is opened and closed while the insertion/removal rod is inserted into and removed from the cylindrical body of the auxiliary pipe by moving the movable pipe as the long curtain is opened. Curtain opener. When the long curtain mounting portion moves and the insertion/removal rod comes into contact with a corner of the greenhouse, the insertion/removal rod projecting outward from the cylinder starts to be inserted into the cylinder. The curtain opening/closing device according to claim 1 or 2.

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