JPH03244958A - Damper device - Google Patents

Abstract

PURPOSE:To eliminate the generation of abnormal noises at the time of opening and closing a damper and simplify the return and mounting of the damper by disposing vanes for closing an air passage on a rotary shaft provided rotatably inside the side walls of a casing and providing a cam means on the outside of the casing to cause the damper to close the air passage. CONSTITUTION:Ducts are connected to a casing 10 provided therein with a damper device through the air suction port 12 and the air exhaust port 13 of the casing, and ventilation air is allowed to pass through the inside of the casing 10 as an air duct in the open state of a damper 26. Then, a signal is sent from a control circuit to a solenoid 27, whereby a stop 28 moves forward and a movable piece 29 abuts against a cam shaft 19 to stop the rotation of a rotary shaft 16, so that an air passage 11 is closed by the damper 26. In the case where ventilation is executed again, the stop 28 is moved backward by the solenoid 27, whereby the damper 26 is rotated and brought into an open state by a ventilating air current.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a damper device used in a ventilation path such as an intake/exhaust system.

[Conventional technology]

Conventionally, this type of damper device has a damper body (3) consisting of a cylindrical body (1) and a gear lary (2), as shown in FIGS. 11 and 12, with a weight (4) at one end and a weight (4) at the other end. A damper (6) having an engaging portion (5) and whose center is rotatably supported by the cylindrical body (1) is provided, and a temperature fuse (7) is engaged with the engaging portion (5). At the same time, the other end of the temperature fuse (7) is locked to the inner wall of the damper body (3) to hold the damper (6) at right angles to the gear rally (2), and the cylindrical body (
1) There is a known system in which the temperature of the air inside rises, the temperature fuse (7) is blown, and the inside of the cylinder (1) is sealed with a damper (6). See official bulletin>.

[Problem to be solved by the invention]

In the conventional damper device as described above, the temperature fuse (7
) is fused and the damper (6) is sealed inside the cylinder (1), so in order to return the damper (6), the temperature fuse (
7) had to be replaced, the damper (6) could not be opened or closed arbitrarily, and the workability was poor when replacing the temperature fuse (7) as well.

Also, when the damper (6) closes, the cylinder body (
1) If the damper (6) hits the inner wall and causes abnormal noise, or if the damper (6) is left sealed inside the cylinder (1), the peripheral end of the damper (6) and the inner wall of the cylinder (1) There was a problem in that freezing due to outside air occurred during this period, making it difficult to return the damper (6).

Furthermore, since the weight (4) is used in the damper (6), it is necessary to work with consideration to the direction of gravity when installing the damper body (3), resulting in poor workability.

This invention was made to solve the problem,
The damper can be opened and closed arbitrarily without producing any abnormal noise.
It is an object of the present invention to provide a damper device that is easy to return and install.

[Means to solve the problem]

The damper device according to the present invention includes an outer casing that has an air passage inside, an intake port on one side, and an exhaust port on the other side, and an outer casing that is rotatably supported on a side wall of the outer casing. The camshaft is provided with a rotating shaft, a blade disposed around the rotating shaft and sealing the air passage, and a camshaft connected to the rotating shaft and located outside the outer casing; A stop portion having a movable piece that seals the air passage with a blade is provided.

Further, a driving section having a pin that is arbitrarily projected into the outer casing is provided.

Further, a permanent magnet is provided at the end of the blade, and an electromagnet facing the permanent magnet is provided on the outer wall of the outer casing.

[Effect]

In this invention, an outer casing has an air passage inside, an intake port is provided on one side, and an exhaust port on the other side; , a blade disposed around the rotating shaft and sealing the air passage,
a cam shaft connected to the rotating shaft and located outside the outer casing;
By providing a stop part having a movable piece that is arbitrarily attached to the camshaft and sealing the air passage with a blade, the movable piece of the stop part comes into contact with the camshaft, and the air passage is sealed with the blade. The rotating shaft is stopped in the sealed state.

In addition, since the driving portion having a pin that arbitrarily projects into the outer casing is provided, the pin and the blade come into contact with each other, and the rotating shaft is stopped.

Further, since a permanent magnet is provided at the end of the blade and a tWL stone facing the permanent magnet is provided on the outer wall of the outer casing, the permanent magnet is attracted to the electromagnet and the blade is stopped.

〔Example〕

FIGS. 1 to 4 are diagrams showing an embodiment of the present invention,
In the figure, (101 is an outer casing, which has an air passage (11) inside, and is made up of a frame with an intake port (12) on one side and an exhaust port (13) on the other side. (14) is a frame for the above-mentioned air intake. Stoppers attached to the port (12) and the exhaust port (13) are used when connecting a duct (not shown).(15) is a pair of bearings provided on the side wall of this outer casing, and (16) is this bearing. The rotary shaft is rotatably supported on the blade mounting hole (17
), and the end portion (18) is provided to protrude outside the outer housing opening 0. (19) is a camshaft provided at this end, which is fixed to the rotating shaft (16) with a screw (20), and one end is bent into an L shape to prevent removal. (21) is a blade, which is bent into an L shape at the central bending part (22),
The bent portion (22) is brought into contact with the rotating shaft (16). Note that the blade mounting hole (17) is provided in the bent portion (22).
) is provided.

(24) is a blade mounting plate provided on the bent part (22) of this blade, (25) is an impeller, in which a plurality of the blades (21) are arranged with their bent parts (22) facing each other, and Rotating shaft (16
) and attach the screw (
20) After being fixed, the blades are screwed (20) to each other by the blade mounting plate (24), thereby forming a pair of cross-shaped dampers (26) that are orthogonal to each other. In this case, the damper (26) seals the air passage (11),
It is parallel to the camshaft (19). (27) is a solenoid provided on the side wall of the outer housing opening 0), and is driven by a signal from a control section (not shown). (28) is a stop part that protrudes from this solenoid.
27), and the above camshaft (19) is attached to the tip.
A movable piece (29) that comes into contact with the camshaft (19) is provided.
) and the movable piece (29) are brought into contact with each other, so that the damper (2
6), the air passage (11) is sealed. (30) is an E-shaped retaining ring for preventing the rotating shaft (16) from coming off.

In the damper device configured as described above, the damper device is arranged, a duct is connected to the intake port (12) and the exhaust port (13), and the damper (26) is in an open state when the outer casing Q
Ventilation air is passed through O) as a ventilation passage.

Next, a signal is sent from the control circuit to the solenoid (27), which causes the stopper 28) to move forward and the movable piece (28) to move forward.
29) comes into contact with the camshaft (19), so that the rotating shaft (1
6) is stopped, and the air passage (11) is sealed by the damper (26). When ventilation is to be performed again, the damper (26) is rotated by the ventilation flow by moving the stop portion (28) rearward using the solenoid (27) and becomes open.

5 to 7 are views showing other embodiments of the present invention, in which (31) is a rotating shaft B, one end of which has a support shaft (32) with a small diameter, and a temporary fixing hole (32). 33).

(34) is a spring, (35) is a solenoid mounting plate provided on the outer casing aα, (36) is a drive portion provided on this solenoid mounting plate, and (37) is a solenoid forming this drive portion. ) is a pin that protrudes into the outer casing QOI, and its surface is coated with a material such as rubber to reduce shock, and the pin is a pin that protrudes into the outer casing QOI from the opening 〈3
8) The ball moves into the outer casing 00) and comes into contact with the damper (26). In the device configured in this way, after the plurality of rotating shafts B (31) are fixed to the blade (21) through the temporary fixing holes (33), the spring (34) is fixed to the blade (21).
) is sandwiched between rotating shafts B (31) to form a damper (26), and a support shaft (32) is inserted into the shaft hole (39) of the outer casing (10).
Attach the damper (26) by inserting it through the damper (26). The damper (26) can be stopped by optionally protruding the pin (37) into the outer housing opening (0) via the drive part (36), and the same effect as in the above embodiment can be obtained. .

In addition, as shown in Fig. 8, the blade (21) and the rotating shaft (
By providing 16) with synthetic resin, it becomes possible to deal with salt damage, rust, etc., and has the effect of further improving the above embodiment.

Moreover, FIGS. 9<a), (b), and (c) are diagrams showing still other embodiments of the present invention, in which the blades of the impeller (25) (
21) A permanent magnet (40) is provided at the end, and an electromagnet (41) facing this permanent magnet is provided on the outer wall of the outer casing QOI.
When you want to seal the air passage (11) by installing an electromagnet (41)
By sending a signal to the permanent magnet (40) and the electromagnet 4
The rotation of the impeller (25) is stopped by the attraction with the electromagnet (41), and the same effect as in the above embodiment is obtained.
may be provided on both side walls of the outer casing αO.

Further, FIG. 10 shows still another embodiment of the present invention, in which the impeller (25) may be made of a metal that is easily magnetized and may be attracted by the electromagnet (41).

〔Effect of the invention〕

As explained above, this invention has an air passage inside,
An outer casing with an intake port on one side and an exhaust port on the other, a rotating shaft rotatably supported on the side wall of the outer casing and installed therein, and a rotating shaft provided around the rotating shaft that seals off the air passage. a camshaft connected to the rotating shaft and located outside the outer casing; and a stop part having a movable piece that is optionally abutted on the camshaft and seals the air passage with the vane. With this provision, the rotary shaft can be arbitrarily stopped by the movable piece of the stop part, and the air passage can be quietly opened and closed by the blades. Furthermore, it is easy to assemble and install due to its light weight.

In addition, by providing a drive portion having a pin that projects arbitrarily into the outer casing, the pin and the blade come into contact with each other, stopping the rotating shaft and allowing the air passage to be arbitrarily sealed.

In addition, a permanent magnet is provided at the end of the blade, and an electromagnet that faces this permanent magnet is provided on the outer wall of the outer casing.By varying the strength of the electromagnet, it is possible to gradually open and close the air passage. It is possible to improve usability.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, in particular, a perspective view showing the blade in an open state, FIG. 2 a perspective view showing the blade in a closed state, FIG. 3 an exploded perspective view of the blade, and FIG. Figure (a),
(b) is a front view and a side view of the impeller, FIG. 5 is a perspective view showing another embodiment of the present invention, and FIG. 6 is (a), (
b) also shows another embodiment of the present invention, in particular a sectional view showing the impeller in the open state and a sectional view showing the impeller in the closed state;
FIG. 7 is an exploded perspective view of an impeller showing another embodiment of the invention, FIG. 8 is an exploded perspective view of an impeller showing another embodiment of the invention, and FIGS. b) and (c) further show other embodiments of the present invention, in particular sectional views showing the open and closed states of the impeller and sectional views using a plurality of electromagnets, Figure 1O<a), ( FIG. 11 is an exploded perspective view showing a conventional damper device, and FIG. 12 is a sectional view showing a conventional damper device. In addition, all is the outer casing, (I is the air path, (12) is the intake port, (13) is the exhaust port, (16) is the rotating shaft, (■9) is the camshaft, (21) is the blade, ( 28) is a stop part, (29) is a movable piece, (36) is a drive part, (37) is a pin, (40)
is a permanent magnet, and (41) is an electromagnet.

Claims (3)

[Claims] (1) An outer casing that has an air passage inside, an intake port on one side, and an exhaust port on the other; a rotating shaft rotatably supported on the side wall of the outer casing; a camshaft that is connected to the rotary shaft and is located outside the outer casing; 1. A damper device comprising a stop portion having a movable piece that is sealed with a stop portion. (2) The damper device according to claim 1, further comprising a drive portion having a pin that is arbitrarily projected into the outer casing. (3) The damper device according to claim 1, wherein a permanent magnet is provided at the end of the blade, and an electromagnet facing the permanent magnet is provided on the outer wall of the outer casing.