JPH0719248Y2 - Automatic house opening / closing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic house opening / closing device for automatically opening a transparent sheet of a house for cultivating agricultural products.

[0002]

2. Description of the Related Art A greenhouse for cultivating various agricultural products is constructed by covering an arched pipe with a transparent sheet such as a vinyl sheet. In greenhouse cultivation, temperature control in the greenhouse is extremely important, and if the temperature rises too much, the crops will suffer temperature damage.

For this reason, conventionally, the temperature inside the house is monitored by a temperature sensor, and when the temperature exceeds a set temperature, the power means such as a motor is operated by the signal of the temperature sensor to automatically open the transparent sheet, and the inside of the house is automatically opened. Those that regulate the temperature have been proposed.

[0004]

However, the above-mentioned conventional means has a problem that it is difficult to install in a remote place without a power source because a power source for operating the power means is required. In addition, even if there is a power source, it requires a power means such as a motor, resulting in an extremely high cost, and it requires time and labor for maintenance and management. Therefore, it is costly especially for a small house such as a tunnel house. There was a problem that it could not be applied. Therefore, the present invention
An object of the present invention is to provide an inexpensive automatic opening / closing device for a house, particularly for a small house such as a tunnel house.

[0005]

To this end, according to the present invention, a winding body 6 of a cord 7 is axially attached to a base 1 installed in a house 15, and the shape memory material is attached to the cord 7. Is connected to a spring 9 and is provided with an arm 11 that rotates in association with the rotation of the winding body 6. An engaging portion 12a at the tip of the arm 11 is provided with a transparent sheet 16 covered by a house 15. It is adapted to be engaged with the hem of the.

[0006]

In the above construction, when the temperature inside the house 15 exceeds the set temperature, the spring 9 made of the shape memory material contracts. Then, the winding body 6 is pulled by the string-like body 7 and rotates,
In conjunction with this, the arm 11 also rotates, the hem of the transparent sheet 16 is rolled up by the engaging portion 12a, and the house 15 is partially opened.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view of an automatic opening / closing device for a house. Reference numeral 1 denotes a desk-shaped base, which is configured by four columns 3 standing on a frame-shaped frame 2, and a lower end portion 3 of the column 3.
The needle a has a sharp needle shape to be inserted into the soil.

A bearing 4 is provided on the front portion of the frame 2, and a horizontal shaft 5 is rotatably supported by the bearing 4. A pulley 6 as a winding body is attached to a central portion of the shaft 5, and a string-like body 7 such as a wire or a nylon string is wound around the pulley 6.

A vertical column 8 is provided upright on the rear portion of the frame 2. Reference numeral 9 denotes a coil-shaped spring made of a shape memory material, the tip end of which is connected to the string-like body 7 and the rear end of which is connected to the vertical column 8. The spring 9 contracts when the temperature inside the house reaches or exceeds a set temperature (for example, 22 ° C to 27 ° C).

Arms 11 are detachably attached to both ends of the shaft 5. Therefore, the arm 11 rotates integrally with the shaft 5. Reference numeral 10 denotes a pin-shaped stopper projectingly provided on the frame 2, and defines a rotation limit of the arm 11 in the clockwise direction. The arm 11 extends to the front of the base 1, and a sub arm 12 is joined to the tip of the arm 11 in an inclined posture. The lower end of the sub arm 12 is an engaging portion 12a that is bent in a U shape. Reference numeral 13 is a reinforcing rod for connecting the engaging portions 12a to each other.

FIG. 2 shows a state in which the automatic opening / closing device for a house having the above-mentioned structure is installed inside the house. The base 1 is installed by inserting the sharp lower end portion 3a of the support column 3 into the soil. The engaging portion 12a at the tip of the arm 11 is provided with a transparent sheet 1 such as a vinyl sheet covered with the house 15.
It is engaged with 6 hem. Reference numeral 17 denotes a skirt portion made of a vinyl sheet arranged near the surface of the house 15.

This automatic opening / closing device for a house is constructed as described above, and its operation will be described below. As shown in FIG. 2, this automatic opening / closing device is installed inside the house 15. If the temperature inside the house 15 is below the set temperature, the spring 9
Is extended by the load of the arm 11, the sub arm 12, etc.,
The arm 11 and the sub arm 12 are in the state shown by the solid line in FIG.

When the temperature inside the house 15 reaches or exceeds the set temperature, the spring 9 contracts and pulls the cord 7 in the direction of the arrow in FIG. Then, the pulley 6 rotates in the clockwise direction, and in conjunction with this, the arm 11 also rotates in the same direction, the hem of the transparent sheet 16 is rolled up by the engaging portion 12a, and the house 15 is partially opened (Fig. (See dashed line). FIG. 3 shows a state in which the house 15 is thus opened. The outside air enters through the opening 18 and the temperature inside the house 15 decreases. The sub arm 12 extends upward in a tilted posture, and by extending upward in this way, the rolled up transparent sheet 16 is supported from below so as not to hang downward. When the temperature inside the house 15 becomes equal to or lower than the set temperature, the spring 9 expands, and in FIG. 2, the arm 11 and the sub arm 12 rotate counterclockwise by their own weight, and the opening 18 is closed.

[0014]

As described above, according to the present invention, when the temperature inside the house 15 exceeds the set temperature, the hem of the transparent sheet 16 is automatically rolled up to open the house 15.
Ventilation in the house 15 can be promoted to lower the temperature. Moreover, the automatic opening / closing device for a house according to the present invention has an extremely simple structure and is inexpensive, so that it can be advantageously applied to a small house such as a tunnel house.

[Brief description of drawings]

FIG. 1 is a perspective view of an automatic opening / closing device for a house according to an embodiment of the present invention.

FIG. 2 is a side view of the inside of the house according to the embodiment of the present invention.

FIG. 3 is a perspective view of a house according to an embodiment of the present invention.

[Explanation of symbols]

 1 Base 5 Shaft 6 Pulley (Wound Body) 7 String 9 Spring 11 Arm 12a Engagement Part 15 House 16 Transparent Sheet

Claims (1)

[Scope of utility model registration request] 1. A base 1 installed in a house 15, a winding body 6 rotatably attached to the base 1, and a cord-like body 7 wound around the winding body 6. A spring 9 made of a shape memory material which is connected to the cord-like body 7 and contracts when the ambient temperature exceeds a set temperature to pull the cord-like body 7 to rotate the winding body 6; It is composed of an arm 11 that rotates in association with the rotation of the rotating body 6 and an engaging portion 12a that is formed at the tip of the arm 11 and that engages with the hem of the transparent sheet 16 that is covered by the house 15. Automatic house opening / closing device.