JPS6335567Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a guide roller in an internal coating device for a greenhouse.

In greenhouses for melons and the like, an internal coating device is already in use in which the inside of the greenhouse is further covered with a film that can be opened and closed for heat retention, lighting, and the like. In other words, at night, the film on the inside of the greenhouse is completely closed, making the greenhouse a so-called double structure to ensure heat retention, and during the day, the film on the inside is opened to let in sunlight. This is what I did.

The film can be moved by fixing one edge of the film to a predetermined position on a frame installed in the greenhouse, fixing the other edge to a movable bar on the frame, and moving the movable bar on the frame using a driving wire. It is designed to open and close. A support wire (for example, an endless wire) for supporting the film is also connected to the movable bar. As shown in FIG. 7, as guide rollers for guiding these wires on the frame, a support frame 2 is attached to the horizontal member 1 of the frame, and two rollers of the same shape and size are installed within the support frame 2. Generally, rollers 3a and 3b are suspended horizontally with their upper portions protruding from the support frame 2. In the figure, numeral 4 is a driving wire, and 6 is a film. By the way, the wire 4 guided by the rollers 3a and 3b
is one wire or one endless wire with both ends fixed to the drum, so when the wire 4 moves, the rollers 3a and 3b rotate in mutually opposite directions. However, since the upper portions of the rollers 3a and 3b protrude from the support frame 2 and are in contact with the film 6, if they rotate in opposite directions, the film 6 will not move smoothly and may be damaged.

In order to solve this problem, the present invention provides a guide roller in which one of the two rollers, which rotates in the opposite direction to the direction in which the film advances and retreats, has a smaller diameter so that it does not come into contact with the film. It is.

Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

First, an example of an internal coating device for a greenhouse to which the present invention is applied will be described. This internal coating device, denoted by the reference numeral 10, is provided with a frame 12 such as a pipe inside a greenhouse 11, and one edge of two films 6 and 7 is placed at a predetermined position on the frame 12 (for example, the frame 12).
The films 6 and 7 are fixed to the lower edge 13' of the front part 13 and the rear edge 14' of the upper part 14, respectively, and the other edges of the films 6 and 7 are fixed to the movable bar 15 on the frame 12.
16 respectively, and move the movable bars 15 and 16 in a predetermined direction (when there are two movable bars, that is, when two films are used, the movable bars are moved relative to each other as shown by the arrows in FIG. direction)
The films 6 and 7 are opened and closed by moving the film. Each movable bar 15, 16
When moving the frame 12 in a predetermined direction,
A driving wire 4 wound around a roller 26 on one edge is connected to movable bars 15 and 16, both ends of the driving wire 4 are fixed to a drum 5 rotated by a motor 17, and the motor 17 is rotated in forward and reverse directions. or manually, the driving wire 18 is reciprocated.
Furthermore, an endless wire 18 for supporting the film is connected to each end of the movable bars 15 and 16. It is preferable to use films 6 and 7 that extend from the front surface 13 or top surface 14 of the frame 12 to both side surfaces 19, 19 as shown in FIGS. There is no problem even if it corresponds only to the portion 13 to the upper surface portion 14. 20 and 21 are rollers of the supporting endless wire 18.

Next, a case will be described in which the present invention is used as a guide means for the driving wire 4 in the above-mentioned internal coating device 10. The guide roller of the present invention is similar to the conventional guide roller in that the support frame 2 is attached to the horizontal member 1 of the frame 12, but inside the support frame 2 there is a large diameter roller whose upper part protrudes from the support frame 2. 22 and a small-diameter roller 23 recessed in the support frame 2 are horizontally mounted so as to be rotatable, and passage holes 24, 24 for the wire 4 are formed in the front and rear walls of the support frame 2 in correspondence with the small-diameter rollers 23. It differs from the conventional one in that it is perforated. Thus, the upper part 4a of the wire 4 is connected to the movable bar 15 via a suitable connecting means 25, and the large diameter roller 22
On the other hand, the lower part 4b of the wire 4 is connected to the movable bar 16 and is guided through the passage hole 2 of the support frame 2.
4 and 24 and guided by the small diameter roller 23.

The present invention can be used not only as a guide means for the drive wire 4 in the internal coating device 10 but also as a guide means for the film support wire 18.

Since the present invention is constructed as described above, when the movable bars 15, 16 are moved in a predetermined direction by the drive wire 4 when opening and closing the films 6, 7, the wires connected to the movable bars 15, 16 The large-diameter roller 22 that guides the upper portion 4a rotates in the direction in which the films 6, 7 advance while being in contact with the films 6, 7. On the other hand, the small diameter roller 23 that guides the wire lower part 4b rotates in the opposite direction to the large diameter roller 22, that is, in the opposite direction to the direction in which the films 6 and 7 advance. It is immersed in the film and does not touch films 6 and 7.

Therefore, the film moves smoothly while being guided by the large-diameter rollers, and there is no risk of damage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of an internal coating device for a greenhouse to which the present invention is applied, Fig. 2 is a side view showing guide rollers, drive wires, etc. in the same internal coating device, and Fig. 3 is a fully closed state. FIG. 4 is a perspective view showing the internal coating device in a half-open state, FIG. 5 is a plan view showing the guide roller of the present invention, and FIG. 6 is a plan view of the guide roller of the present invention. 7 is a front view showing a conventional guide roller. FIG. 7 is a sectional view showing a conventional guide roller. 1...Horizontal member, 2...Support frame, 3a, 3b...
... Roller, 4 ... Driving wire, 5 ... Drum,
6, 7...Film, 10...Inner coating device, 1
1...Greenhouse, 12...Frame, 13...Front part, 14...Top part, 15, 16...Movable bar,
17... Motor, 18... Endless supporting wire, 19... Side part, 20, 21... Roller, 22
...Large diameter roller, 23...Small diameter roller, 24... Passing hole, 25... Connection means, 26... Roller.

Claims (1)

[Scope of utility model registration request] A frame is provided in the greenhouse, one edge of the film is fixed at a predetermined position on the frame, and the other edge of the film is fixed to a movable bar on the frame,
A drive wire that drives the movable bar and a support wire that supports the film are respectively connected to the movable bar, and the film is opened and closed by moving the movable bar in a predetermined direction on the frame using the drive wire. In the internal coating device for a greenhouse, a support frame is attached to the horizontal member of the frame, and within the support frame are a large diameter roller whose upper part protrudes from the support frame and a small diameter roller recessed into the support frame. A guide roller for driving or supporting wires, in which the rollers are rotatably mounted horizontally, and wire passage holes are bored in the front and rear walls of the support frame in correspondence with the small-diameter rollers.