JPH0345565Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a unit-type opening/closing drive device used for opening and closing single-hung windows (ventilation windows, skylights, side windows, etc.) of greenhouses.

Conventional technology Conventionally, greenhouse ventilation windows and skylights were opened and closed using an opening/closing drive device that rotates a pinion of a pinion rack mechanism (Utility Model Application No. 53-43713, Utility Model Application No. 55-142955).
(Refer to Japanese Patent Publications, etc.) or a parallel link mechanism or bending link mechanism type opening/closing drive device (Refer to the Publication No. 52-
No. 29161) is known and used. Also,
Japanese Utility Model Publication No. 43-27005 discloses a window structure in which one end of a flexible steel strip provided with a through hole that engages with a sprocket wheel rotated by a rotating shaft is connected to the window frame of a single-hung window. An opening/closing drive device is described.

Problems to be Solved by the Present Invention In the case of the opening/closing drive device for the pinion rack mechanism mentioned above, since it is not a unit type structure,
The installation or assembly of the greenhouse frame, which has a simple, lightweight structure, is troublesome and difficult to achieve with precision, and the opening and closing operations of the windows tend to be uneven. In particular, in the case of a structure in which a fan-shaped rack is engaged with a pinion like the opening/closing drive device described in Japanese Utility Model Application Publication No. 55-142955, the arc of the fan-shaped rack is aligned with the center of rotation of the window in a greenhouse frame with a simple structure. This is an extremely difficult task. If a fan-shaped rack whose rotation center and arc do not match is moved by meshing with a pinion, it is inevitable that the meshing movement will malfunction or become impossible, and if the window is large (or long), it will be difficult to rotate the rotating shaft. Requires large power. Moreover, the opening and closing angles of the windows vary; some windows may be fully opened while others are still opening, and conversely, even if some windows are fully closed, Experience has shown that other windows are still in the process of closing, and some windows are left open, making it extremely impractical.

Furthermore, in the case of a link mechanism type opening/closing drive device, a rotational torque much larger than that required to rotate a pinion is required, so the size of windows to which it can be applied is limited to a small size. For example, it is hardly applicable as an opening/closing drive device for a window that is so long as to span the entire length of a greenhouse.

Like the opening/closing drive device described in Japanese Utility Model Publication No. 43-27005, a flexible steel strip is run by a sprocket wheel, and one end of the strip is connected to open and close a window frame. In this case, if the flexibility of the strip is small (that is, the stiffness is large)
This creates a large amount of resistance when the steel strip is moved by the sprocket wheel, and a large amount of power is required to open and close the sprocket. On the other hand, if the flexibility of the steel strip is sufficiently high (that is, the rigidity is small), the rigid strip easily bends and lacks the strength and rigidity to press against the window frame, so it is difficult to maintain the window frame in a fully open state. It is clear that the window frame is poor and when wind pressure is applied to the window frame, it immediately shakes and shakes, making it extremely impractical. In addition, this opening/closing drive device has a sprocket wheel, a steel strip, and a casing that supports the rotating shaft, which is just a bearing member with an open shape that is as small as possible, so there is no condensation or moisture generated in the greenhouse during use. , dust, etc. directly falls on the sprocket wheel, the steel strip, and the interlocking portions of the two, which causes rapid rusting and staining, and has the disadvantage that the moving parts tend to malfunction.

Means for Solving the Problems As a means for solving the above-mentioned problems of the prior art, a window opening/closing drive device according to the present invention is provided as shown in FIGS. 1 and 2 of the drawings. At least a pair of rotating bodies 2 and 3 are rotatably installed in a shaped casing 1 with a predetermined distance between their axes, and an endless power transmission strip 4 is wound between the pair of rotating bodies 2 and 3. (b) The transmission rod 5 of a predetermined length whose base end is connected to the transmission strip 4 is arranged substantially parallel to the running direction between the pair of rotating bodies 2 and 3 of the transmission strip 4. ,
The tip of the transmission rod 5 is projected from one end of the casing 1; Length attachment member 51
is fixed, and the casing 1 is attached and fixed to the frame 23 of the greenhouse via the attachment member 51; The invention is characterized by being configured as a driving vehicle.

Function This opening/closing drive device can be installed and used by attaching the mounting member 51 of the casing 1 to the aggregate 23 of the greenhouse and coupling the transmission rod 5 to the movable frame 15 of the window.

A pair of rotating bodies 2 and 3 which are the contents of the casing 1
The transmission strip 4 and the transmission rod 5 are almost completely sealed by the box-shaped casing 1 to prevent condensation, moisture, dust, etc. generated in the greenhouse from falling on them.

By attaching the attachment member 51 to the aggregate 23, the casing 1 is firmly fixed in a state in which it can withstand the reaction force required when opening and closing the window by rotating the rotating body 2 located on the opposite side as a driving wheel.

When the drive wheel 2 rotates, the transmission strip 4 travels accordingly, and the transmission rod 5 moves along the transmission strip 4.
move in unison with The window can be opened to the required opening degree by pushing out (forward) the transmission rod 5.
Close the window by retracting (retracting).

This opening/closing drive device can be applied to opening/closing long and large-scale windows by, for example, installing a large number of drive wheels 2 in parallel along the longitudinal direction of the window, and driving each driving wheel 2 in common with a long rotating shaft 10. can. Conversely, this opening/closing drive device can also be installed for one window and used for opening/closing small-scale windows.

The rotational drive means of the drive wheel 2 shall be manual;
Alternatively, an electric or hydraulic motor or other power source may be used.

This opening/closing drive device uses a rotating body 2 on the opposite side of the protruding side of the transmission rod 5 as a driving wheel, which is connected to a rotating shaft 1.
0, etc., so regardless of the frame structure of the greenhouse, it is possible to rotate the drive wheel 2 within the range where there is no mutual interference between the rotating shaft 10 and the frames 20 and 23 of the greenhouse (see Figure 2). ) can be installed with the casing 1 raised as high as possible above the greenhouse.

Example Next, the illustrated embodiment of the present invention will be described.

In FIG. 1, numeral 1 is a thin and elongated box-shaped casing, and numerals 2 and 3 are a sprocket wheel and a guide wheel installed as a pair of rotating bodies at both ends of the casing 1. In the figure, reference numeral 4 denotes an endless chain as an endless transmission band wound between the pair of sprocket wheels 2 and the guide wheel 3, and 5 in the figure denotes an endless chain whose base end is connected to the endless chain 4. The transmission rod serves as the output end.

The box-shaped casing 1 has a width of 100 mm due to a thin metal plate.
It is assembled into a long and lightweight box shape with a thickness of 25 mm and a length of about 460 mm. However, this casing 1 is
It can also be formed from a synthetic resin plate or other materials. When the casing 1 is made of a transparent synthetic resin board, the casing 1 hanging from the ceiling (skylight) of the greenhouse is effective in reducing the impression that the casing 1 is an unsightly obstacle overhead for workers.

The distance between the axes of the pair of sprocket wheels 2 and guide wheels 3 is, for example, approximately 350 mm. The sprocket wheel 2 as a driving wheel located at the lower side of the figure has a shape with a flange 2a on the side, and the lower end inside the casing 1 (transmission rod 5
The flange 2a can be freely rotated by four (but not limited to four) free rolls 6, 6 installed in the casing 1 (the end opposite to the protruding side). Supported. In other words, the configuration eliminates the use of expensive bearings to support the sprocket wheel 2. The free rolls 6, 6 are rotatably supported by a shaft 7 passed through the casing 1. The sprocket wheel 2 has flanges 2a, 2 on both sides thereof.
By slidingly contacting the inner surface of the casing 1, the displacement in the axial direction is restricted.

The hollow shaft portion 2b of the sprocket wheel 2 is
Sufficiently large diameter shaft holes 9 provided on both sides of the casing 1
It protrudes to both sides through the hole (Fig. 2).
Therefore, the large-diameter shaft hole 9 reduces the creaking and crushing resistance caused by the eccentricity of the shaft portion 2b of the sprocket wheel 2. are projected to both sides through the shaft hole 9 of the casing 1. This shaft part 2b
The sprocket wheel 2 is rotatably driven through the rotating shaft 10 by passing a rotating shaft 10 having substantially the same diameter into the hollow part of the sprocket and fixing it with a fixing bolt.

On the other hand, although a sprocket wheel is, of course, preferable for the guide wheel 3 serving as the follower wheel, a simple roller is sufficient in this embodiment, and in order to reduce costs, a simple roller is employed. The guide wheel 3 is rotatably supported by a shaft 12 passed through the casing 1.

The transmission rod 5 is made of a straight steel flat bar with a length of about 500 mm, and its base end is connected to the coupler 14.
sprocket wheels 2 connected to the endless chain 2 and forming the pair of sprocket wheels 2 of the chain 2.
The guide wheel 3 is arranged substantially parallel to the traveling direction between the guide wheel 3 and the guide wheel 3, and protrudes from the upper end of the casing 1.
A through hole 5a is provided at the tip of the transmission rod 5, and the metal fitting 16 fixed to the movable frame 15 of the window is connected to the through hole 5a.
They are connected with bolts 17 passed through a (second
figure).

At the upper end of the casing 1, that is, at the end on the protruding side of the transmission rod 5, a long straight rod-shaped mounting member 51 is arranged to intersect approximately at right angles to the direction in which the transmission rod 5 protrudes, and is firmly secured with screws 52. Mounted and fixed. The length of this mounting member 51 is, for example, about 60 cm, and the hanging fittings 53, 53 provided at both ends of the mounting member 51 are connected to the sheet fixing groove frame 23 at a predetermined position that constitutes the frame of the greenhouse, and the mounting member 51 is attached. The casing 1 is supported at both ends of the member 51.
The posture and position are firmly fixed. In this way, the casing 1 is installed in a solid state on the arch pipe 20 which is made up of the framework of the greenhouse. Reference numeral 21 in the figure is a vinyl sheet used as a covering material for the greenhouse.

Therefore, when the rotating shaft 10 is rotated in either the forward or reverse direction, the sprocket wheel 2 is rotated, and the endless chain 4 is run in the same direction at the same speed, so that the transmission rod 5 is integrated with the chain 4. The window movable frame 15 connected to the transmission rod 5 is opened and closed as the transmission rod 5 moves in and out.

The transmission rod 5, which is pushed by an endless chain 4 driven by a sprocket wheel 2 located at the lower end of the casing 1, moves in and out in an indeterminate direction depending on changes in the window opening/closing load and opening/closing movement. Although it tends to become unstable, since the casing 1 is firmly fixed by the mounting member 51 as described above, there is no problem in use and operation.

Effects of the present invention Since the window opening/closing drive device according to the present invention is constructed as a unit type with all contents contained within the box-shaped casing 1, it can be manufactured as a ready-made product in a factory with a constant quality and meet demand. can be met. Then, at the site, the casing 1 is attached to the framework 23 of the greenhouse using the attachment member 51, the transmission rod 5 is coupled to a predetermined position of the movable frame 15 of the window, and the rotation shaft 1 is attached to the drive wheel 2.
It can be easily and quickly installed and used by simply connecting 0, and the installation does not require any technical skill or troublesome adjustment, making it easy to use.

Furthermore, since it is a unit type in which the contents are housed in the box-shaped casing 1 and sealed, it is maintenance-free against condensation, moisture, dust, etc. that occur in the greenhouse, and inventory management is easy.

In particular, the drive wheel 2 is located on the opposite side of the casing 1 from the protruding side of the transmission rod 5 (at the bottom of the casing 1 in normal use), and the rotating shaft 10 that rotates the drive wheel 2 is connected to the frames 20 and 23 of the greenhouse. Since the casing 1 can be installed sufficiently high above the greenhouse without interfering with it, the casing 1 hangs over the head of the person working in the greenhouse, giving an unsightly impression, or causing the casing 1 to hit the head. It is practical because it greatly eliminates the anxiety, discomfort, and pressure that you feel when something falls on your head.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the internal structure of an opening/closing drive device according to an embodiment of this invention, and FIG. 2 is a front view showing the operating state of the opening/closing drive device. DESCRIPTION OF SYMBOLS 1... Casing, 2... Sprocket wheel (driving wheel), 3... Guide wheel (vertical wheel), 5... Transmission rod, 51... Mounting bar, 23... Frame, 10...
…Axis of rotation.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) At least one pair of rotating bodies is rotatably installed within a box-shaped casing with a predetermined distance between their axes, and an endless power transmission strip is wound between the pair of rotating bodies. (b) A transmission rod of a predetermined length whose base end is connected to the transmission strip is arranged approximately parallel to the running direction between the pair of rotating bodies of the transmission strip, and its tip end is connected to the transmission strip. protrudes from one end of the casing; (c) a mounting member is fixed to the end of the casing from which the transmission rod is protruded in a direction substantially perpendicular to the direction in which the transmission rod protrudes; The casing is attached and fixed to the frame of the greenhouse through the transmission rod, and the rotating body located on the opposite side to the protruding side of the transmission rod is configured as a drive wheel to which rotational force is input. Window opening/closing drive device.