JPH0237925Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a register that automatically performs natural ventilation with a simple structure.

With conventional registers, the ventilation plate had to be opened and closed manually, which caused the problem that ventilation work was troublesome.

The present invention has been devised in view of the above points, and its purpose is to provide a register with a simple structure that can automatically open and close a ventilation port.

The present invention relates to a register that automatically opens and closes a vent depending on the ambient temperature.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments. 1 is a short ventilation tube, and a face plate 5 having a ventilation opening 2 is fixed to one end of the ventilation tube 1.
3 is a ventilation plate installed inside the ventilation tube 1,
They are disposed on the left and right sides of the support shaft 6 and are rotatably mounted upward about the support shaft 6. That is, a pair of ventilation plates 3 are arranged on the left and right sides with the support shaft 6 in between, and one end of each ventilation plate 3 is pivotally supported by the support shaft 6. Each ventilation plate 3 is formed in a size that can open and close half of the flow path in the ventilation tube 1. When the ventilation plate 3 is in a horizontal state, it comes into contact with a receiving part 7 provided on the inner wall of the ventilation tube 1 via a sealing material 8, and the ventilation opening 2 is closed. 9 is ventilation port 2 and ventilation plate 3
A push-up body disposed between the push-up body 9
The push-up rod 10 is inserted into a support plate 11 installed in the ventilation tube 1 so as to be able to move up and down.
The upward movement causes the ventilation plate 3 to rotate in the opening direction at the contact portion 12 of the push-up body 9, and the downward movement of the push-up body 9 causes the ventilation plate 3 to rotate in the closing direction. A coil spring 4a, which is an example of the displacement body 4, is inserted into the upper half of the push-up rod 10. The lower end of the coil spring 4a is supported by the support plate 11, and the upper end is in contact with the contact portion 12. The displacement body 4 is a body that displaces greatly due to temperature changes, and as a displacement body 4 that displaces greatly and reversibly due to temperature changes, martensitic transformation occurs when a specific (transformation) temperature such as 30°C is exceeded. There is a shape memory alloy (commonly known as nitinol) that deforms greatly and reversibly deforms to its original shape when the temperature drops below a certain temperature, such as the above-mentioned 30° C., but other materials may also be used. Shape memory alloys are alloys of nickel, titanium, etc., and can be used over a wide range of temperatures from -273℃ to 100℃ by changing the ratio of nickel to titanium and adding small amounts of other elements. Transformation temperature can be controlled. Moreover, when it transforms into a specific shape, the force it exerts is about 200 times greater than the force caused by expansion and contraction of a bimetal element of the same size. Also, since the ventilation opening 2 is covered with two ventilation plates 3, one ventilation plate 3 covers the ventilation opening 2.
Compared to the case where the ventilation plate 3 is covered, the moment due to the ventilation plate 3 around the shaft attachment part of the ventilation plate 3 is halved as a whole (the weight of the ventilation plate is half and the length of the arm is half, so one piece ), if the distance between the point of application of the force from the displacement body 4 on the ventilation plate 3 and the pivoting part is the same, the ventilation plate 3 can be moved with a small force. In other words, the response of the ventilation plate 3 becomes faster. In addition, since the amount of work required to obtain the same opening amount is small, even though a small displacement body 4 is used, the opening amount when the ventilation plate 3 is opened can be large, and ventilation can be performed efficiently. be.

FIG. 3 shows an example in which the register A constructed as described above is installed on the ceiling 13. Building part 1
4 is provided with a ridge ventilation opening 15, so that the room 16 can be ventilated from the ventilation opening 2 of the register A through the ridge ventilation opening 15. When the temperature exceeds approximately 30°C, the coil spring 4a made of shape memory alloy deforms into a specific shape of a certain length, pushes up the ventilation plate 3, opens the ventilation opening 2, and exhausts the hot air from the attic to the outside. This will automatically provide ventilation during the summer. When the temperature drops below 30°C during rain or winter, the coil spring 4a deforms to its original shape with a certain length.
The ventilation plate 3 is lowered to close the ventilation opening 2 and prevent heating air from escaping.

As mentioned above, this invention forms a ventilation hole at one end of the ventilation tube, and a pair of ventilation plates are arranged side by side on the left and right with a support shaft placed at a fixed position inside the ventilation tube.
One end edge of each ventilation plate, which is sized to open and close half of the flow passage in the ventilation cylinder, is attached to a support shaft, and consists of a coil spring whose length changes in two stages at a predetermined temperature. The lower end of the displacement body is brought into contact with a support plate arranged opposite to the ventilation plate at a fixed position in the ventilation cylinder, and a part of the push-up body is inserted into the displacement body, and a part of the push-up body is placed at the upper end of the push-up body. The center piece of the generally U-shaped abutting part that opens upwards is brought into contact with the upper end of the displacement body, and the upper end of each leg of the abutting part is brought into contact with a key point on the lower surface of each ventilation plate, and the above-mentioned predetermined The length of the displacement body is set so that when the displacement body is contracted below the temperature, both ventilation plates close the ventilation port, and when the displacement body is extended beyond the above-described predetermined temperature, both ventilation tubes open the ventilation hole. Since the displacement body changes its length in two stages depending on temperature changes such as summer and winter, the ventilation plate can be automatically opened and closed according to the ambient temperature, and it is easy to use as a device. However, it has the advantage of being able to automatically open and close the ventilation openings. Also,
The ventilation opening is covered with two ventilation plates, and one edge of the ventilation plates arranged on the left and right sides of the support shaft is attached to the support shaft, so it is possible to cover the ventilation opening with one ventilation plate. By comparison, the overall moment due to the ventilation plate around the pivot point of the ventilation plate is halved. In other words, when there is one ventilation plate and when there are two ventilation plates, if the distance between the point of application of the force from the displacement body on the ventilation plate and the shaft attachment part is the same, the ventilation plate can be moved with a small force. It turns out. As a result, the response to opening and closing of the ventilation plate becomes faster. Also,
Since the amount of work required to obtain the same amount of opening is small, there is an advantage that even though a small displacement body is used, the amount of opening when the ventilation plate is opened can be large, and ventilation can be performed efficiently.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the register of the present invention, Fig. 2 is a cross-sectional view of the same, and Fig. 3 is a cross-sectional view showing the construction state of the same. Plate 4 is a displacement body.

Claims (1)

[Scope of utility model registration request] A ventilation opening is formed at one end of the ventilation tube, and a pair of ventilation plates are placed side by side on the left and right across a support shaft placed at a fixed position inside the ventilation tube, and the size is such that the flow path inside the ventilation tube can be opened and closed in half. One end edge of each ventilation plate formed in the above is pivoted to a support shaft, and the lower end of a displacement body made of a coil spring whose length changes in two stages when a predetermined temperature is reached is used for ventilation at a fixed position inside the ventilation cylinder. A part of the push-up body is inserted into the displacement body by abutting against a support plate arranged opposite to the plate, and the center of the approximately U-shaped abutment part that opens upward and is provided at the upper end of the push-up body. The upper end of each leg of the above-mentioned abutment section is brought into contact with the key point on the bottom surface of each ventilation plate, and when the displacement body is shrunk below the above-mentioned predetermined temperature, both ventilation plates The length of the displacement body is set so that when the ventilation opening is closed and the displacement body is extended beyond the predetermined temperature, both ventilation plates open the ventilation opening.