JPH065558Y2 - Air supply damper device - Google Patents

Description

[Detailed Description of the Invention] <Field of Use of the Invention> The present invention relates to an air supply damper device for performing air supply linked with exhaust air of an exhaust fan by opening and closing in conjunction with the exhaust fan.

<Prior Art> Conventionally, an air supply damper device of this type is known, for example, as shown in Japanese Utility Model Publication No. 59-16751.

<Problems to be Solved by the Invention> However, in the air supply damper device of Japanese Utility Model Publication No. 59-16751, the ventilation area becomes narrow as a result of the opening / closing structure, and sufficient ventilation performance cannot be obtained. I was not satisfied with it, and there was room for improvement.

Further, according to the structure for opening and closing the blade body by using the sandwiching type means disclosed in Japanese Utility Model Laid-Open No. 48-19439, although a wider ventilation area can be obtained, the electric mechanism is premised on this structure. However, it is unavoidable that the members of the drive system for that purpose face the ventilation passage, and as a result, the reduction of the ventilation amount due to the resistance component of these respective members cannot be avoided, and the dust in each member in these ventilation passages is unavoidable. However, there is a problem in that since such substances are likely to adhere, there are many failure factors and other problems.

<Means for Solving the Problems> In order to solve the problems in the above-mentioned conventional technology, in the present invention, a pair of wings that are opened / closed by rotating / opening / closing a hinge shaft as a fulcrum to open / close the ventilation passage, Also, in the air supply damper device including a sandwiching body that rotates in the closing direction by sandwiching the pair of blades from the hinge shaft side, a sandwiching body in which a pair of rotating arms are projectingly provided on the rotating shaft is provided. By using the drive source to rotate the rotary shaft of the sandwiching body, both rotary arms sandwich the pair of wings from the hinge shaft side.

<Operation> According to such a structure, since it can be provided outside the main member ventilation passage of the drive system, the ventilation area can be maximized,
Further, it is possible to effectively prevent dust and the like from adhering to each member of the drive system.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

This air supply damper device 10 includes a cylindrical body 3 that forms a ventilation path 2.
A pair of blades 4 and 4 are provided therein, and the pair of blades 4 and 4 rotate and open and close with a hinge shaft 5 as a fulcrum to open and close the ventilation passage 2. .

The means for rotating the wing bodies 4, 4 is a sandwiching body 11, and this sandwiching body 11 includes a pair of rotating arms 11a on a rotating shaft 11s,
11a is formed so as to project, and the wing bodies 4, 4 are formed by rotating the rotating shaft 11s as shown by an arrow A by a drive source (not shown).
Can be pinched and released from the hinge shaft 5 side.
Then, the wings 4 and 4 are rotated / opened / closed according to the sandwiching / opening.

<Effects of the Invention> As described above, the air supply damper device according to the present invention uses a so-called butterfly type of "damper" composed of a pair of wings, and holds the pair of wings with a sandwiching body. Since it is designed to rotate and open / close by sandwiching it from the hinge shaft side, the ventilation area is approximately 100%.
The effect is that a close one can be obtained, and since it can be provided outside the main member ventilation passage of the drive system, it is possible to effectively prevent adhesion of dust and the like to each member of the drive system that causes a failure. There is.

[Brief description of drawings]

1 is a schematic perspective view of an air supply damper device according to an embodiment of the present invention, and FIG. 2 is a schematic sectional view taken along the line IV-IV in FIG. 2 ... Ventilation path 3 ... Wing body 5 ... Hinge shaft 10 ... Air supply damper device 11 ... Clamping body 11s ... Rotating shaft 11a ... Rotating arm

Claims (1)

[Scope of utility model registration request] Claims: 1. A pair of blades that can be rotated / opened / closed around a hinge shaft to close / open an air passage, and a pair of blades sandwiched from the hinge shaft side to rotate in a closing direction. In an air supply damper device including a clamped body, the clamped body is formed by projecting a pair of rotary arms on a rotary shaft, and the rotary shaft is rotated by a drive source. An air supply damper device, wherein a rotating arm sandwiches a pair of wings from the hinge shaft side.