JPH076762Y2 - Winding shaft drive for opening and closing greenhouse curtains - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for winding, unwinding and opening and closing a curtain stretched for heat insulation and shading of a greenhouse. The present invention relates to a drive device for a take-up shaft for rewinding, and particularly to a drive device for a take-up shaft in a structure in which the take-up shaft is rolled on a frame for tensioning a curtain.

[Prior Art] As a rolling-type winding shaft driving device for opening and closing a curtain of this type, a driving device is connected to one end of a winding shaft to which one end edge of the curtain is fixed, and the winding shaft is connected to the winding shaft. There is a structure in which the curtain is opened and closed by rotating the curtain. In this case, it is necessary to prevent the drive device from rotating, which is a reaction caused by the rotational urging force, but as a countermeasure against this, a fan-like swing is provided on the floor surface of the greenhouse with its lower end pivotally supported. There is one in which the upper end of a slide rod is fixed to the drive device to prevent rotation. Further, a slide member is fixedly installed at a key portion of the drive unit, and a guide rail is installed along the moving direction of the drive unit so that the slide member is engaged with or inserted into the guide rail to prevent rotation. Things are known.

[Problems to be Solved by the Invention] In the winding shaft drive device having the above-described structure, the axis of the winding shaft during operation is always maintained substantially perpendicular to the winding / rewinding direction, and It is assumed that there is no slide in the direction. However, during rolling movement of a long winding shaft that winds and unwinds a wide curtain, the angle of the shaft center with respect to the traveling direction changes due to the partial difference in the winding diameter, Further, the winding shaft moves up and down due to the increase or decrease of the winding diameter of the curtain, and the end of the winding shaft often slides in the axial direction or the angle to the advancing direction changes. In such a case, in the former one and the latter one, a strong frictional resistance acts on the engaging portion (insertion portion) of the rotation preventing member to cause a locked state, the movement itself of the winding shaft is blocked, and the curtain itself is blocked. There was a drawback that opening and closing operations could not be performed.

Even when all of the curtains are opened or closed, the size of the slide member, that is, the length of the slide member in the moving direction, must be on either side of the moving end. There is also the problem of unrolled parts, in other words, the curtain having open or unclosed parts.

The present invention has been proposed to solve the above problems,
A greenhouse that does not take up space, can accommodate movements due to bending of the take-up shaft and errors in the partial take-up speed, and slides in the axial direction of the take-up shaft, and does not leave the curtain unrolled. An object of the present invention is to provide a winding shaft drive device for opening and closing a curtain.

[Means for Solving the Problems] In order to achieve the above object, a winding shaft driving device for opening and closing a greenhouse curtain according to the present invention is a winding rod in which one end of a curtain which is inclined or is horizontally stretched is fixed. Is a wind-up shaft drive device for opening and closing a curtain on a partition surface by rolling back and forth, a drive unit fixed to at least one end of the wind-up rod, and a moving direction of the drive unit. A guide rail arranged along the guide rail, a traveling rail attached movably in a state of being engaged with the guide rail, and the auxiliary rail arranged substantially parallel to the guide rail; 2 to connect the section and the running body
A pair of link members, one base end of which is coupled to and fixed to the drive portion, and the other base end of which is movably engaged with an auxiliary rail of the traveling body. It is characterized in that it has two pairs of link members that are rotatably supported by the body via fixed pins and that have the other ends pivotally supported by a common movable pin.

[Embodiment] Hereinafter, a winding shaft driving device for opening and closing a greenhouse curtain of the present invention will be described based on an embodiment shown in the drawings.

In the figure, 1 is a beam 4 arranged near the side eaves of the greenhouse and a beam arranged near the center of the ceiling (not shown) along the opening / closing direction of the curtain 2 stretched on the tension frame 3. ) Is an immovable guide rail that is erected between and, for example, H-section steel is used. Reference numeral 5 is a winding rod having one end edge of the curtain 2 fixed by a substantially cylindrical film clip (not shown) or the like, 6 is a drive unit connected to one end of the winding rod 5, and 7 is a guide rail 1 Numeral 8 is a running member that is movably engaged with the link member 8 that connects the driving unit 6 and the running member 7.

Although the drive unit 6 is not particularly limited, for example, the second
As shown in the drawing, a tubular motor having a structure in which a motor 6b is built in an outer cylinder body 6a having a predetermined diameter, and a joint portion 6c is connected to a motor shaft 6d to rotate (hereinafter, simply referred to as a "tubular motor").
Is used). On the winding rod 5,
By fitting and mounting the joint portion 6c of the drive unit 6 composed of a tubular motor, the winding rod 5 and the drive unit 6 can be integrated, and there is no hindrance when performing the winding and rewinding operation of the curtain 2. . In addition, it is possible to reduce the space.

Here, 6e is a bearing frame body of a link member 8, which will be described later, for driving the winding rod 5 while preventing rotation of the drive unit 6.
It is a fixing projection piece fixed to 81. Also, the outer cylindrical body 6a
It is preferable to have a structure in which the curtain 2 rotates together with the winding rod 5 so as to be smoothly wound when the curtain 2 is wound around the outer cylindrical body 6a.

The drive unit 6 is not limited to the one in which the speed reduction mechanism and the electric motor described above are integrally formed, and the drive unit is only a speed reduction mechanism built in a tubular casing, and the drive unit 6 is connected to the greenhouse via a flexible rotation transmission wire. Needless to say, it may be connected to a prime mover fixed at a predetermined position therein.

The electric wire 9 for supplying electric power to the drive unit 6 is not particularly limited in its wiring method as long as it is connected to the drive unit 6 at a position where it does not interfere with the operation of the traveling body 7. For example, the first
As shown in the figure, as the guide rail 1, a hollow one in which a part of the upper surface is cut out along the longitudinal direction is used. Inside the hollow portion 1a, as shown in FIG. An electric wire guide member 1 having a pulley 101 attached so as to freely rotate and a wheel 102 attached to the outside of the casing 100.
The wire guide member 10 can be configured to be mounted with 0.

That is, as shown in FIG. 1 and FIG. 4, the electric wire 9 is inserted into the guide rail 1 for a predetermined length from the end portion 1b arranged on the greenhouse central beam side of the guide rail 1 and at the end portion 1b. Fix it. Then, the electric wire guide member 10 is located on the side of the greenhouse 4 with respect to the traveling body 7, and the electric wire 9 is wound around the pulley 101 from the lower side to the upper side, and the end of the electric wire 9 is connected to the drive unit 6. To do. At this time, in order to cope with the expansion and contraction of the link member 8, the electric wire portion between the traveling body 7 and the drive unit 6 has "slack". When the take-up rod 5, the drive unit 6 and the traveling body 7 advance in the take-up direction, the electric wire guide member 10 travels along the guide rail 1 in the take-up direction, so that the electric wire 9 sags. It does not occur and does not interfere with the operation of the drive unit 6 and the traveling body 7.

When the winding rod 5, the drive unit 6 and the traveling body 7 travel in the unwinding direction, the electric wire guide member 10 precedes, but at this time, the electric wire guide member 10 is provided so as not to interfere with the traveling body 7 and the like. It is preferable to apply a constant tension to the member 10 in the lateral direction of temperature using a constant torque spring or the like.

The traveling body 7, as shown in the perspective view of FIG. 5 and FIG. 7,
A frame body 71 having a substantially U-shaped cross-section with an open upper surface, and four wheels 72 which are located on the inner surfaces of the side plate portions 71a facing each other of the frame body 71 and are rotatably provided at predetermined intervals. Four auxiliary wheels 73 arranged adjacent to the wheels 72 so as to rotate orthogonally to the rotation direction of the wheels 72, and on one outer side of the side plate portion 71a at predetermined intervals via a mounting member 74. And an auxiliary rail portion 75 provided substantially parallel to the guide rail 1,
And is configured. Then, as shown in FIG.
The U-shaped frame 71 is movably engaged with the guide rail 1.

As shown in FIGS. 6 to 8, the link member 8 has a substantially U-shaped first bearing frame body 81 fixed to the fixing projection piece 6e of the drive section 6 through a split pin 11. A second U-shaped bearing frame body 82 which is engaged with the auxiliary rail portion 75 of the traveling body 7 via wheels 83 so as to be movable along the rail portion 75.
And fixed pins 84 and 85 suspended inside the first and second bearing frame bodies 81 and 82, and a base end rotatably supported by the fixed pins 84 and 85, while the other end is common Of the first and second link plates 87, 88 pivotally supported by the movable pin 86 and rotatably arranged in a fan shape about the movable pin 86. Reference numeral 89 is a spring member that urges the link plates 87 and 88 in the approaching direction. Further, 90 is a guide support plate for the electric wire 9.

In the above configuration, first, an appropriate number of tension rails 3 are arranged in the greenhouse in a substantially arch shape along the ceiling surface in a direction substantially orthogonal to the longitudinal direction of the greenhouse. Next, for example, the guide rail 1, the traveling body 7, the electric wire guide member 10 and the like are mounted and arranged on the side portion of the stretched rail 3 closest to the one end surface. The guide rail 1 is bridged between a guide rail receiver 12 arranged on the eaves beam member 4 on the side surface of the greenhouse and a guide rail receiver (not shown) arranged on the central beam of the greenhouse.

The curtain 2 has one end fixed to the greenhouse central beam and the other end fixed to the take-up rod 5 so as to be positioned near the beam member 4 and stretched. The axial center positions of the drive unit 6 and the winding rod 5 are located at the rear ends of the auxiliary rail portions 75 of the traveling body 7 movably attached to the guide rails 1 in the traveling direction.

When the drive unit 6 is driven, the winding rod 5 winds the curtain 2 by the rotation of the motor shaft of the drive unit 6. As a result, the wheels 83 of the link member 8 connected to the drive unit 6 move along the auxiliary rail portions 75 of the traveling body 7. When the winding rod 5 further winds the curtain 2, the wheels 83 come into contact with the forward end stopper portion 75a of the auxiliary rail portion 75, and the traveling body 7 itself is pulled from the end stopper portion 75a. Run on the guide rail 1,
The curtain 2 is wound around the winding rod 5 along the guide rail 1.

At this time, even if an error occurs in the axial movement of the take-up rod 5 due to the deflection of the take-up rod 5 or a partial change in the take-up speed, the fan-shaped rotational movement of the link member 8 causes the take-up rod 5 to move. Since 5 slides in the axial direction, the curtain 2 is wound up without applying an unreasonable load to the winding shaft rod 5.

The curtain 2 is wound up to the central beam of the greenhouse, and when the tip of the traveling body 7 comes into contact with the guide rail receiver arranged on the central beam, the traveling is stopped and the curtain 2 is completely wound up. Become.

On the other hand, when trying to stretch the curtain 2 again in this state, the drive unit 6 is rotated in the reverse direction. That is, when the drive unit 6 is reversed, the take-up rod 5 moves in the rewinding direction, that is, the lateral direction of the greenhouse, contrary to the above, due to the weight of the curtain 2 and is connected to the drive unit 6. The link member 8 is moved along the auxiliary rail 75 until it comes into contact with the rewinding direction end stopper portion 75b of the auxiliary rail portion 75. Then, the wheels 83 of the link member 8 pull the traveling body 7 and move it on the guide rail 1, so that the curtain 2 is gradually stretched.

In the above-mentioned embodiment, the curtain 2 is stretched between the eaves on one side and the central beam.
Needless to say, the structure may be stretched over the entire ceiling surface of the greenhouse, such as a structure in which one curtain is stretched from the eaves on both sides toward the center.

[Advantages of the Invention] According to the winding shaft drive device for opening and closing the greenhouse curtain of the present invention, since the auxiliary rail is provided along the moving direction of the traveling body, the auxiliary rail is provided at the base edge when the curtain is wound. There is no unrolled part. Moreover, even when the curtain is stretched, the unclosed portion does not occur.

Furthermore, since it has a link member that rotates in a fan shape, it is possible to absorb the thrust movement of the winding rod that occurs during winding or rewinding, and the curtain winding and rewinding operations can be performed without any problems. You can

[Brief description of drawings]

FIG. 1 is a partially omitted perspective view showing an embodiment of the present invention, and FIG.
FIG. 3 is a vertical cross-sectional view showing a motor, FIG. 3 is a perspective view showing an electric wire guide member, FIG. 4 is a perspective view for explaining an arrangement relation of electric wires and operation of the electric wire guide member, and FIG. FIG. 6 is a perspective view showing a link member, FIG. 7 is a plan view showing an arrangement relationship between a traveling body and a link member, and FIG. 8 is a traveling body, a link member, a guide rail, and a drive unit. It is a front view which shows the arrangement relation of. 1 ... Guide rail 2 ... Curtain 3 ... Stretching frame 4 ... Beam member 5 ... Winding rod 6 ... Drive unit 7 ... Traveling body 8 ... Link member 9 ... Electric wire 10 ... Electric wire guide Element

Claims (1)

[Scope of utility model registration request] 1. A winding shaft driving device for opening and closing a greenhouse curtain, which opens and closes a curtain by a partition surface by rolling back and forth a winding rod fixed at one end of a curtain that is inclined or horizontally stretched. A drive unit fixed to at least one end of the winding rod, a guide rail disposed along the moving direction of the drive unit, and movably attached in a state of being engaged with the guide rail, A traveling body including an auxiliary rail disposed substantially parallel to the guide rail, and a pair of two link members connecting the driving unit and the traveling body, one base end of which is the driving unit. To the bearing frame body connected and fixed to the bearing frame body, the other base end of which is movably engaged with the auxiliary rail of the traveling body, is rotatably supported via fixing pins. Together, each other end is common A winding shaft driving device for opening and closing a greenhouse curtain, comprising: a pair of two link members pivotally supported by a pin.