JPH0612480Y2 - 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, as this type of air supply damper device, for example, those shown in JP-B-60-5227, JP-B-59-16751 and the like are known.

<Problems to be Solved by the Invention> However, the air supply damper device disclosed in Japanese Utility Model Publication No. 60-5227 requires a larger space for opening and closing because the blade body is a single blade. In addition, since the whole becomes large, the above-mentioned Jitsuko Sho 59-1675.
The air supply damper device of Japanese Patent Laid-Open No. 1 is unsatisfactory in that the ventilation area becomes narrow as a result of the opening / closing structure, and sufficient ventilation performance cannot be obtained, and there is room for improvement.

Further, according to the technique of rotating / opening / closing the wing body in a butterfly shape using a gear group as disclosed in Japanese Utility Model Publication No. 45-18875, it is possible to avoid an increase in the size of the device, and also, Japanese Utility Model Publication No. 59-16751. Although higher air permeability can be obtained compared to the technology of the publication, the reduction of air flow due to the resistance of each of these members is unavoidable because the gear group and the members that transmit the driving force to it are in the air passage. There is a drawback in that there are many failure factors because dust and the like are easily attached to each member in the ventilation passage.

<Means for Solving the Problems> In order to solve the above problems, according to the present invention, a pair of shafts and a ventilation passage, which are respectively rotated by a drive source connected via a gear group, can be closed / opened freely. Each of the wing bodies is supported by a corresponding shaft body, and the pair of wing bodies is configured to rotate and open / close in a butterfly shape in response to the rotation of each shaft body. In the air supply damper device, the shaft body of each wing body is extended to the outside of the ventilation passage,
The shaft cylindrical gears are attached to the outside of the ventilation passage of each shaft body so as to mesh with each other, and the driving force of the drive source is transmitted to either one of the shaft cylindrical gears through the intermediate cylindrical gear. did.

<Operation> According to such a structure, since the blade body is a butterfly type opening / closing, it is possible to avoid an increase in size of the device, and it is possible to provide all members of the drive system including the gear group outside the ventilation passage. The ventilation area can be maximized, and the adhesion of dust or the like to each member of the drive system can be effectively avoided.

<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 / close in a butterfly shape in accordance with the rotation of the shafts 15 and 15, respectively, to thereby form the ventilation passage 2 Occlusion
It can be opened freely.

More specifically, one end of each shaft 15, 15 is extended to the outside of the air passage 2, and a cylindrical gear, specifically, the first spur gears 11, 11 is attached to the outer extension of the air passage. Has been. The first spur gears 11, 11 are meshed with each other, and the shafts 15, 15 are driven by a driving force from a drive source (not shown) transmitted via a second spur gear 12 meshing with one of the first spur gears 11, 11. Reference numerals 15 respectively rotate in the arrow X direction to the arrow Y direction. Reference numeral 16 in the drawing denotes a spring for urging the wings 4 and 4 in the opening direction (the air passage 2 is closed).

<Effect of the Invention> In the air supply damper device according to the present invention, as described above, a so-called butterfly type composed of a pair of blades is used as the “damper body”, and each blade body has a corresponding shaft body. Since it is rotated and opened and closed by rotating, the space required for opening and closing the wing body is half that of a single-blade type, and all the drive system members including the gear group are outside the ventilation passage. Since it can be provided in the air conditioner, it is possible to obtain a ventilation area of nearly 100%, and it is possible to effectively prevent dust and the like from adhering to each member of the drive system, which causes a failure.

[Brief description of drawings]

FIG. 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 4 ... Wing 10 ... Air supply damper device 15 ... Shaft 11 ... 1st spur gear 12 ... 2nd spur gear

Claims (1)

[Scope of utility model registration request] 1. A pair of shafts, each of which is rotated by a drive source connected through a gear group, and a pair of blades, which open and close the air passage, are provided, and each blade corresponds to each other. In an air supply damper device in which the pair of blades are rotated and opened / closed in a butterfly shape in response to the rotation of each shaft, the shaft of each blade is ventilated. The shaft cylindrical gears are mounted so as to mesh with each other, and the shaft cylindrical gears are driven through the intermediate cylindrical gears to one of the shaft cylindrical gears. An air supply damper device characterized by transmitting the driving force of a power source.