JPS6273024A - Ventilating hole device - Google Patents

Abstract

PURPOSE:To cause a smooth reciprocating movement of a movable plate to open or close a ventilating hole smoothly, by providing an tension or compression coil spring which produces an expansional or contractional force in the opposite direction of the deformation of a shape memory alloy between a stationary plate and a movable plate for a ventilating hole which is opened or closed by the expansion and contraction of a shape memory alloy. CONSTITUTION:A shape memory alloy 8 connecting a stationary plate 1 and a movable plate 6 of a device for ventilating holes deforms into a shape memorized in response to the difference in atmospheric temperature throughout a year, causing the movable plate 6 to move so as to open or close ventilating holes 7. When said shape memory alloy 8 deforms contractionally at a high temperature, the movable plate 6 is moved to the left since the contractional force by heating is set at a value larger than the compressive spring force of a coil spring 9. At a low temperature, the tensile force of the coil spring 9 extends the shape memory alloy 8, causing the movable plate to the right.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ventilation hole device that is attached to a wall, ventilation window, etc. of a building such as a house or a storeroom.

(Prior Art) Conventionally, as a ventilation hole device for ventilation of buildings, for example, as described in Japanese Utility Model Publication No. 55-30221,
A fixed plate with a plurality of ventilation holes bored therein, and a movable plate that overlaps the fixed plate and can be moved back and forth, the movable plate has a plurality of ventilation holes bored therein that correspond to the ventilation holes of the fixed plate. By reciprocating the movable plate, the ventilation holes of both plates communicate with each other and the ventilation holes are opened, and the ventilation holes of one of the movable plate and the fixed plate are closed by the plate surface between the ventilation holes of the other plate. There is something.

(Problems to be Solved by the Invention) In such conventional ventilation hole devices, the ventilation holes are opened and closed by manually moving the movable plates one by one. In other words, when the outside temperature in the summer is high, ventilation holes are opened to ventilate the air, and when the outside temperature is low in the winter, the ventilation holes are closed to prevent the ventilation holes from penetrating into the building. However, it is easy to forget to open and close the ventilation hole, leaving the ventilation hole open or closed throughout the year. However, if the ventilation holes remain closed during the summer, ventilation will not take place, which is not only bad for the health of residents, but also has a negative impact on the building. In addition, if the ventilation holes are left open during the winter, the warm air generated by the heater will be lost, which will be uneconomical.
In snowy areas, wind and snow can get into the room, which is undesirable.

Therefore, as a result of intensive research to solve the problems with the conventional ventilation hole device, the inventors of the present invention have developed a shape-memory device that deforms the fixed plate and the movable plate of the ventilation hole device in the direction of movement of the movable plate due to temperature changes. We completed a ventilation hole device that can automatically open and close ventilation holes based on outside temperature by connecting them with an alloy body.

However, when reciprocating the movable plate almost horizontally, there is a frictional resistance between the weight of the movable plate and the movable plate and the fixed plate, and shape memory alloys have a considerably large deformation force in order to move the movable plate back and forth smoothly. It requires. That is,
For coil springs made from unidirectional shape memory alloys,
The force generated when deforming to the memorized state is strong, but the force that returns in the opposite direction is canceled out by frictional resistance, and even in the case of a coil spring made from a two-way shape memory alloy, the memorized state does not change. The force generated during deformation is not necessarily the same in both directions, and for this reason, the movable plate cannot be smoothly reciprocated, and the ventilation holes cannot be repeatedly opened and closed in this state.

The present invention relates to a ventilation hole device previously proposed by the present inventor in which a fixed plate and a movable plate of the ventilation hole device are connected to a shape memory alloy that deforms in a substantially horizontal movement direction of the movable plate due to temperature changes. This problem is solved by providing a ventilation hole device that can smoothly and automatically repeatedly open and close the ventilation hole based on changes in outside temperature due to seasonal changes.

(Means for Solving the Problems) Next, embodiments of the ventilation hole device of the present invention will be described with reference to the drawings.

Reference numeral 1 designates a fixing plate in which a plurality of ventilation holes 2 are bored, and the lower edge of the fixing plate 1 is bent into an L shape to form a lower guide groove 3. An upper guide groove 5 is formed on the edge by a hanging piece 4 whose tip is bent into an L-shape in symmetry with the lower guide groove 3.

Reference numeral 6 denotes a movable plate in which a plurality of ventilation holes 7 are bored. 7 is bored corresponding to the ventilation hole 2 of the fixed plate 1. Note that the ventilation holes 2 and 7 are not limited to the vertically elongated rectangular shape shown in the figure, but may have any shape.

8 is a shape memory alloy body formed into a coil spring shape;
A coil spring 9 that generates a tensile or compressive force in a direction opposite to the direction of deformation of the shape memory alloy body 8 is provided between the protruding pieces 11 and 12 of the fixture 10 that is fixed to approximately the central shaft of the fixed plate. ing.

The shape memory alloy body 8 is made of a Ti-Ni-based or Cu-based alloy, and has a so-called shape memory function in which the shape memorized at high temperature returns to its original shape when heated, even if it is deformed at room temperature. Either a one-way shape memory alloy that remembers its shape only at high temperatures or a two-way shape memory alloy that reversibly changes shape in response to temperature cycles can be used.

As shown in FIG. 2, the shape memory alloy body 8 and the coil spring 9 have one end connected to the rear end 14 of the actuating rod 13, which is inserted into a sliding hole 111 formed in the protruding piece 11 of the fixture 10. The other end of the shape memory alloy body 8 is inserted and fixed into the holes 141 and 142 of the mounting tool 10.
The coil spring 9 is inserted and fixed into a hole 151 provided in the head of a bolt 15 fixed to the coil spring 1 by a napht 16, and the other end of the coil spring 9 is pressed against the protruding piece 12. And operating rod 1
A screw 17 is screwed onto the front end of 3, and a fixed piece 19 provided on the surface of the movable plate 6 protrudes from a long hole 18 bored in the fixed plate 1 near the screw 17, and the fixed piece 19 and the actuating rod are connected to each other. 13 are screwed and connected with a nut 20.

FIG. 3 shows another embodiment, in which fixtures 21 and 22 facing each other are fixed to the fixed plate 1 with a long hole 18 bored in the fixed plate 1 in between, and are mounted on the surface of the movable plate 6. A fixing piece 23 is provided to protrude from the elongated hole 18, and the fixing piece 23 and the fixture 2
A shape memory alloy body 8 is provided between the fixing piece 23 and the fixture 22, and a coil spring 9 is interposed between the fixing piece 23 and the fixture 22. is screw 24.・・ Fixing tools 21, 22 and fixing piece 23
is fixed to.

In the embodiment shown in FIG. 2, if the shape memory alloy body 8 is a coiled tension spring made of a unidirectional shape memory alloy that contracts and deforms at high temperatures, the coil spring 9 is a compression coil spring. The mutual force relationship between 9 and the shape memory alloy body 8, which is a coiled tension spring, is that the tension spring force 11 generated when the shape memory alloy body 8 undergoes heat shrinkage deformation at high temperatures is the compression spring force of the coil spring 9. When the heat contraction force of the shape memory alloy body 8 is lost at low temperatures, the compression spring force of the coil spring 9 is set to be larger than the tensile force of the shape memory alloy body 8 so as to stretch the shape memory alloy body 8. It is set larger than the spring force.

In the embodiment shown in FIG. 3, if the shape memory alloy body 8 is a coiled tension spring made of a unidirectional shape memory alloy that shrinks when heated, the coil spring 9 is a tension spring, contrary to the embodiment shown in FIG. springs are used.

(Function) When using the ventilation hole device of the present invention, the fixing plate 1 is fitted into the location where the device of the present invention is to be installed in a building, for example, a ventilation hole in the wall of the building, and the device is attached using mounting screws or the like. Bye.

The ventilation hole device installed in this way is movable because the shape memory alloy body 8 that connects the fixed plate 1 and the movable plate 6 deforms into a memorized shape according to changes in temperature throughout the year. When the plate 6 is moved, both the ventilation holes 2 of the fixed plate 1 and the ventilation holes 7 of the movable plate 6 are communicated with each other during high temperatures in the summer, and the ventilation holes 2 and 7 are opened, and when the temperatures are low in the winter, the ventilation holes 2 and 7 are opened.
7 are mutually closed off by the plate surfaces between the opposing ventilation holes.

The substantially horizontal reciprocating movement of the movable plate 6 will be explained based on the embodiment shown in FIGS. 2 and 3. When the shape memory alloy body 8 starts shrinking and deforming at a high temperature, it will change its shape at a high temperature. Since the tension spring force of the heat contraction deformation of the memory alloy body 8 is set to be larger than the compression spring force of the coil spring 9, the coil spring 9 is compressed (in the case of FIG. 2) or expanded (in the case of FIG. 3). ), and the coil spring 9 is compressed or expanded in the direction of arrow A in FIGS. 2 and 3 due to the contraction and deformation force, but at low temperatures, the shape memory alloy body 8 contracts and deforms. Since the force is lost and the compression spring force of the coil spring 9 is set larger than the tension spring force of the shape memory alloy body 8, the coil spring 9 acts in the direction of stretching the shape memory alloy body 8, and thus a shape memory alloy body 8 that deforms in response to cycles of high and low temperatures;
The movable plate 6 works together with the coil spring 9 to help this.
The back and forth movement is repeated.

(Effects of the Invention) Since the ventilation hole device of the present invention has the above configuration, the shape memory alloy body deforms according to changes in outside temperature, so the ventilation hole of the ventilation hole device is automatically opened and closed in summer and winter. However, it is convenient because there is no need to manually open and close it each time.
Various problems caused by forgetting to open/close operations can be eliminated all at once.

In addition, a tension or compression coil spring is installed between the fixed plate and the movable plate, which generates an expansion and contraction force in the direction opposite to the deformation direction of the shape memory alloy body, so that the movable plate can smoothly reciprocate. , the ventilation holes can be smoothly and automatically repeatedly opened and closed based on changes in outside temperature due to seasonal changes.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of the ventilation hole device of the present invention, Fig. 2 is an enlarged sectional view of the main part of the example shown in Fig. 1, and Fig. 3 is another example different from the example shown in Fig. 2. FIG. 2 is an enlarged cross-sectional view of the waist. Explanation of the sign

Claims (1)

[Claims] 1. A fixed plate with a plurality of ventilation holes bored therein, and a movable plate that overlaps the fixed plate and can be reciprocated approximately horizontally, and the movable plate has a plurality of holes corresponding to the ventilation holes in the fixed plate. A ventilation hole is drilled, and the ventilation holes on both plates communicate with each other by reciprocating the movable plate approximately horizontally, and the ventilation hole is opened. In a ventilation hole device that is closed by a surface, both plates are connected by a shape memory alloy body that deforms in the substantially horizontal movement direction of the movable plate due to temperature changes, and the shape memory alloy body is connected between the two plates. A ventilation hole device characterized by being equipped with a tension or compression coil spring that generates an expansion and contraction force in a direction opposite to the direction of deformation of the alloy body.