JPH0517548Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a damper opening/closing display device that allows the open/closed state of a damper for adjusting the air volume of a duct installed in the ceiling to be visually confirmed from the outside.

[Prior art and its problems] In general, buildings are provided with ducts equipped with dampers for adjusting the amount of air in order to circulate indoor air and outdoor air. This duct is usually mounted in the ceiling for aesthetic reasons, and therefore its damper is also mounted in the ceiling. The display section indicating the open/closed state of the damper is often indicated by the words "open" or "closed" on the damper body.

The display part of this damper is attached to the main body, so when opening or closing it, you must open the inspection hole in the ceiling and adjust the opening/closing handle while looking at the opening/closing display attached to the main body. However, it is troublesome to adjust the air volume, especially when the ceiling is high.

[Means for Solving the Problems] The present invention solves the problems of the conventional damper opening/closing display device described above, and provides a damper opening/closing system that allows the opening/closing status of the damper in the ceiling to be easily confirmed from outside the ceiling. The purpose is to provide a display device, and it extends from the opening/closing device of a damper for adjusting the air volume of a duct installed in the ceiling, and is wound around and fixed to the lead-out part of a shaft led out to the lower surface of the ceiling. The rear end of the indicator needle is loosely fitted into the spiral, and the tip of the indicator needle protrudes from a slit provided in a cover covering the lead-out portion of the shaft.

[Function] When you turn the handle at the tip of the shaft that extends from the damper installed in the ceiling and leads out of the ceiling, the spiral wound around the shaft and fixed also rotates, and the shaft is loosely fitted into this spiral. The indicator hand moves up and down as the spiral rotates, indicating whether the damper is open or closed.

[Example] Next, an example of the present invention will be described based on the drawings. Figure 1 is a cross-sectional side view of a part of the main part of the present invention, Figure 2 is an enlarged view of the part where the indicator needle is loosely fitted into the spiral, and Figure 3 is a damper of a duct attached to the ceiling. It is a figure which shows the state of opening and closing operation of.

Reference numeral 1 denotes a shaft extending from a damper 2 attached to a duct A arranged in the ceiling and led out from a ceiling material 3. A handle 4 is attached to the tip of the shaft 1 derived from the ceiling material 3, and between the handle 4 of the shaft 1 derived from the ceiling material 3 and the ceiling material 3,
The spiral 5 is wound and both ends are connected to the shaft 1 through the ring 5a and the base of the handle 4 with screws 5a, 5.
Fix by b.

Spiral 5 wound around shaft 1 and fixed
The indicator needle 6, which has a bulge at the rear end and has a hole for attaching to the spiral 5, is loosely fitted into the bulge. Display hand 6
The tip of the ceiling material 3 is attached to the ceiling material 3 in order to cover the shaft 1 and the spiral 5 excluding the handle 4 which is led out from the ceiling material 3.
It protrudes from a slit 8 formed in the cover 7 attached to the. At the top and bottom of the slit 8, indications such as open and closed are provided. 9 indicates the display hand 6 as the spiral 5 rotates.
This rotation prevention plate has a slit similar to the slit 8 in order to prevent the damper 2 from rotating and to more accurately display the open/closed state of the damper 2 through the slit 8.

Although the shaft 1 and the damper 2 are not shown in detail, they are connected by a known bevel gear or the like, and the blades of the damper 2 are configured to pivot when the handle 4 is rotated.

Next, we will explain the opening and closing of damper 2.
After checking the condition of the damper 2 by checking the position of the indicator needle 6 protruding from the slit 8 bored in the cover 7, when the handle 4 is turned in the desired direction, the shaft 1 also rotates, and the spiral 5 fixed thereto rotates. The display needle 6, which is loosely fitted into the spiral 5, moves up and down in the slit 8 in accordance with the rotation of the spiral 5, thereby indicating the open/closed state of the damper 2. When the indicator hand reaches the desired position, the rotation of the handle 4 may be stopped.

[Effects of the invention] The damper opening/closing display device according to the present invention having the above-mentioned configuration has the display section outside the ceiling.
You can easily check the open/closed state of the damper, and there is no need to open the inspection hole in the ceiling to see it.
Even if the ceiling is high, the damper can be easily opened and closed by using a long, slender stick-like adjustment rod as shown in Figure 3.

Furthermore, since the display hand is moved up and down by spiral rotation, the open/closed state of the damper is accurately displayed.

Since the damper opening/closing display device of the present invention only has a display part that is exposed below the ceiling, it is possible to eliminate the conventional inspection hole in the ceiling, which is good for the aesthetic appearance of the ceiling, and has a simple structure. Therefore, it has many excellent effects as a damper opening/closing display device, such as being able to reduce manufacturing costs.

[Brief explanation of drawings]

Figure 1 is a cross-sectional side view of a part of the main part of the invention, Figure 2 is an enlarged view of the part where the indicator needle is loosely fitted into the spiral, and Figure 3 is a damper of a duct installed on the ceiling. It is a figure which shows the state of opening and closing operation of. A...Duct, 1...Shaft, 2...Damper, 3...Ceiling material, 4...Handle, 5...Spiral, 6
...display hand, 7...cover, 8...slit.

Claims (1)

[Scope of utility model registration request] The rear end of the indicator needle is loosely fitted into a spiral that is wound around and fixed to the lead-out part of a shaft that extends from the opening/closing device of a damper for adjusting the air volume of a duct installed in the ceiling and leads out to the lower surface of the ceiling. . A damper opening/closing display device, further characterized in that the tip of the indicator needle protrudes from a slit provided in a cover that covers the lead-out portion of the shaft.