JPH055398Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a ventilation damper device.

In general, ventilation damper devices are installed directly on the walls of houses, etc., or are connected to ventilation pipes for air supply, exhaust, etc., and automatically open and close the ventilation of the ventilation pipes. It is used for indoor air supply, exhaust, heat retention, etc. The conventional device used for these is a fixed plate with equally spaced opening holes and a rotary plate stacked on top of each other, arranged on the diameter line of the ventilation pipe, and a shaft connected to the center of the rotary plate. The structure was such that the rotating plate was rotated by being rotated by a driving source such as a solenoid. Thereby, the amount of ventilation can be adjusted by adjusting the overlap of the opening holes in the rotary plate and the fixed plate.
However, in such a structure, the ventilation opening ratio
50% or more, and in order to increase the opening area, the ventilation damper device itself has to be enlarged.
It was inconvenient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ventilation damper device that overcomes the drawbacks of the conventional devices and effectively increases the ventilation opening ratio with a simple structure.

FIG. 1 shows a ventilation damper device according to an embodiment of the present invention, in which a is a cross-sectional structural view and b is a front structural view. 1 is a housing, 2 is a rotating shaft, 3 is a drive source capable of forward and reverse rotation such as a rotary solenoid, 4 is a rotating plate, 5 is a joint inverter, 6 is a blade fulcrum, 6' is a rotary drive part fulcrum, 7 is a movable pin, 8 The blade plate 9 is a shaft, and 2, 3 and 4 are rotary drive sources 5,
6, 6' and 7 constitute a link mechanism.

In the operation shown in FIG. 1, the rotation of the drive source 3 causes the rotation shaft 2 and the rotation plate 4 to rotate, and the rotary drive unit fulcrum 6', which is fixed with a pin to rotate the rotation plate 4 - the joint inverter 5 - the vane plate 8. The blade plate 8 rotates in a butterfly shape, that is, in the direction of the arrow in the figure, by a link mechanism connected via a movable pin 7 to a blade fulcrum 6 fixed with a pin for rotation. When the blade plate 8 rotates in the direction of the arrow and the two blade plates 8 overlap, the ventilation pipe becomes open. Further, when the drive source 3 is reversed, the tip of the vane plate 8 comes into contact with the end of the housing 1 via the link mechanism, and the ventilation conduit is closed.

Two sets of link mechanisms 5, 6, 6' and 7 are provided as shown in the figure to open and close the two vanes 8 at the same time. FIG. 2 is a perspective structural view for making it easier to understand the operation of the link mechanism, and the same reference numerals as in FIG. 1 indicate the same parts. The drive source 3 rotates the rotary plate 4 via the rotary shaft 2, and a rotary drive unit fulcrum 6', which is fixed with a pin, makes a circular motion so as to rotate the rotary plate 4.

As a result, the jointer 5 connected to the movable pin 7 via the movable pin 7 moves accordingly. The other end of the jointer 5 is connected via a rotating pin 7 to a blade fulcrum 6 which is fixed to the blade plate 8 with a pin so that it can rotate, so the jointer 5 twists and rotates in the direction of the arrow with the shaft 9 as a fulcrum. Move the blade plate 8 so that it protrudes.

Therefore, the blade plate 8 opens the ventilation pipe as described above, and when the drive source 3 is reversed, the blade plate 8 operates in the opposite manner to the above and closes the ventilation pipe. Although Fig. 2 shows only one link mechanism consisting of 6, 7, 5, 7, and 6', two sets are actually provided in order to open and close the two blades 8 at the same time. There is. In the embodiments of the present invention, changes, modifications, and additions to the structure, arrangement, etc. of each part, including the link mechanism, are included in the present application within the scope of the gist of the present invention.

By implementing this invention, the structure is simple, the opening and closing operation is reliable, and the ventilation opening ratio can be effectively increased, making it highly effective when used as a ventilation damper device for supply and exhaust in residential and industrial applications. It is what it is.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention, in which a is a sectional structural view, b is a front structural view, and Fig. 2 is a perspective structural view showing parts of an embodiment of the present invention, 1 is a housing, 2
is a rotating shaft, 3 is a drive source, 4 is a rotating plate, 5 is a joint inverter, 6 is a blade fulcrum, 6' is a rotational drive part fulcrum,
7 is a movable pin, 8 is a wing plate, and 9 is a shaft.

Claims (1)

[Claims for Utility Model Registration] (1) Two blade plates that can rotate around a shaft fixed to a housing, a rotational drive source having a rotation axis perpendicular to the shaft, and the blade plates and the rotation drive source. 1. A ventilation damper device, characterized in that a link mechanism is provided to connect the blades, and the ventilation pipe is opened and closed by rotating the blade plate in a butterfly shape. (2) The ventilation damper device according to claim (1), which is a utility model registration, and includes a link mechanism comprising a blade part fulcrum, a rotary drive part fulcrum, a joint inverter, and a movable pin that connects the two fulcrums at both ends of the joint inverter.