JPH0447545Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (1) Industrial Application Field The present invention relates to an operation port device that is provided on a duct wall in the vicinity of a damper that is interposed in the middle of a duct.

(2) Prior Art The applicant previously proposed an air volume adjustment damper in which the opening of the damper blades can be adjusted directly from an operation port provided on the duct wall without using an external drive mechanism such as a handle or gear. (Special Application No. 178648, 1982). As such an operation port, a mechanism can be considered in which a lid and a hinge are simply configured as separate bodies to open and close the lid while supporting the lid.

(3) Problems to be solved by the invention However, according to the above configuration, the screw holes are drilled while aligning near the operation port, the hinge is secured with screws, and the lid is attached to the hinge with screws. In addition, the number of parts is large, the installation work is troublesome, the cost is relatively high, and the opening position is unstable when the lid is opened, which interferes with adjusting the opening of the damper blade. was.

The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to simplify the structure, reduce the number of parts, facilitate the installation work, reduce costs, and make it possible to open the lid. An object of the present invention is to provide an operating port device which allows the opening position to be fixed at times and facilitates adjustment of the blade opening.

Structure of the invention (1) Means for solving the problems In order to achieve the above object, the present invention provides an operation port device 10 configured as an operation port provided in the duct wall 22 near the damper. engraved with
A frame 12 having an opening h substantially equal to the operation port and a lid 14 covering the opening h of the frame 12 are formed so as to be connected at at least one hinge portion 16. h is positioned and fixed to the operation port.

(2) Function The operation port device is constructed by carving a single thin plate to form a frame, a lid, and a hinge. When opening and closing the lid, the elongated connecting portion of the hinge portion twists and turns, eliminating the need for a separate hinge and being entirely constructed from a single thin plate. Therefore, the entire device can be easily mounted on the duct wall.

Further, when the lid is opened, the opening position is fixed and the blade opening degree can be easily adjusted.

(3) Embodiments Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic overall configuration diagram of an operating port device 10 according to a first embodiment of the present invention, and the operating port device 10 is constructed on a duct wall near a damper provided in the middle of the duct.

The operation port device 10 is formed by carving a thin plate such as a steel plate by laser, plasma, press processing, etc., and includes a frame body 12, a lid body 14, a hinge part 16, a fixing part 18, and a knob. It includes a body 20.

The frame body 12 is formed in a rectangular shape so as to surround an opening h that is substantially the same as a rectangular operation port provided in the duct wall. This frame 12 has long plate-shaped fixing parts 18 protruding from each side along the opening h, and is connected to the frame 12 at three thin connection parts 18a. There is. Therefore, when fixing to the duct wall as described later, the fixing portion 18 is simply pushed and bent inward to the duct wall to fix the entire device.

On the other hand, a lid 14 is formed adjacent to the frame 12 to cover the opening h of the frame 12. These frame body 12 and lid body 14 have two hinge parts 1.
6.

The hinge portion 16 separates the notch 24 that divides the thin plate into the frame body 12 and the lid body 14 to separate the frame body 12 and the lid body 14.
a small connecting part 25 that connects the frame body 12, a long side protruding part 27 that is formed protruding from the frame 12 and connected to the small connecting part 25, and a long side protruding part 27 that is formed approximately in the center of the long side protruding part 27, It is composed of an elongated hole 30 provided so as to form an elongated connecting portion 28 between the end portion of the side protruding portion 27. This elongated connection portion 28 allows the lid body 14 to
It does not break even when opened and closed, and its strength increases by twisting and turning. It has been experimentally proven that the hinge portion 16 does not break until it rotates about 200 times. Note that the longer the elongated connecting portion 28 is in the longitudinal direction, the greater the durability against torsion.

In this embodiment, the long side protrusion 2 is connected to the frame 12.
7 and an elongated hole 30 is formed approximately in the center thereof, but in short, it is sufficient to form an elongated connecting portion 28 that twists and turns. Therefore, without forming the long side protruding portion 27, the elongated connecting portion 28 is formed by connecting to the small connecting portion on the frame body 12 side in a direction substantially orthogonal to the small connecting portion 25. It is also possible to provide a configuration in which an elongated hole 30 is provided.

On the other hand, a knob body 20 having a neck portion 34 is formed protruding from the other end portion on the frame body 12 side and approximately symmetrical to the hinge portion 16 . On the other hand, the lid body 14
A thin hole 38 is cut in the vicinity of the other end which is substantially symmetrical to the hinge part 16 on the side. put it here,
The knob body 20 is pushed up, the lid body 14 is bent at the hinge part 16, and the knob body 20 is passed through the thin hole 38, and then the knob body 20 is twisted to open the operation port 1.
This means that the fully closed state of 0 is locked. The configuration shown in FIG. 1 uses laser, plasma,
All are integrally formed from one steel plate by press working or the like.

An adhesive (not shown) is applied to the top back side of the frame 12 in FIG. 1, and a packing material such as glass wool (not shown) is stretched over the top surface side of the frame 12 (not shown).

Now, when installing such an operation port device 10 in an operation port provided in a duct wall, the frame 12
Align the opening h with the operation port, abut the frame 12, and glue it to the duct wall.
Push and bend approximately 180 degrees inward to the duct wall and fix. As a result, it is fixed to the operating port without using any screws, and in particular, the plastic holding force of the fixing portion 18, combined with the adhesive force of the adhesive material, ensures the fixed state. Therefore, the installation work is extremely easy.

When opening and closing the lid body 14, the elongated connecting portion 28 of the hinge portion 16 twists and rotates as shown in FIG. 2, and the operating port is opened and closed without the need for hinges, screws, or other members. . That is, when the lid body 14 is bent to close the opening h as shown in the figure, the small connecting portion 2
5, the elongated connecting portion 28 twists in the left and right screw directions. The frame body 12 and the lid body 14 are integrally formed through a hinge portion 16, and the torsional plastic holding force of the elongated connecting portion 28 allows the lid body 14 to remain stationary at any opening degree. Therefore, when manually adjusting the damper blade opening, the lid does not rattle and interfere with the operation.

Further, the knob body 20 is pushed up, the lid body 14 is bent at the hinge portion 16, the knob body 20 is passed through the thin hole 38, and then the knob body 20 is twisted. As shown in FIG. 3, the fully closed state of the operating port 10 is locked.

Next, a second embodiment of the operating port device according to the present invention will be described, in which the same members as those in the first embodiment are denoted by the same reference numerals and their explanations will be omitted.

In this embodiment, the hinge portion 16 is a small connecting portion 25 that connects the frame 12 and the lid 14 by dividing the notch 24 that divides the thin plate into the frame 12 and the lid 14.
An elongated connecting portion 28 is formed between the small connecting portion 25 and the end of the notch 24, and an elongated hole 30 provided on the lid body 14 side adjacent to the small connecting portion 25 is formed at the tip of the notch 24. Relief notch 3 connected and provided on the frame 12 side
Consists of 2.

In this embodiment, the structure is such that the elongated connecting portion 28 and the relief notch 32 can withstand twisting and rotation when the lid body 14 is opened and closed.

Note that the operation port device according to the present invention is not limited to the above embodiments, and even if the operation port has any shape such as round or triangular, it can be used with a corresponding frame and lid structure. In addition, the same effects can be obtained whether there is one hinge or three or more hinges.

Effects of the Invention As explained above, according to the operation port device of the present invention, the frame, the lid, and the hinge are formed by carving a thin plate, so the structure is simple, the number of parts is reduced, and the installation is easy. This makes the work easier, reduces costs, and allows the opening position to be fixed when the lid is opened, making it possible to easily adjust the blade opening.

[Brief explanation of the drawing]

Fig. 1 to Fig. 3 are diagrams showing an embodiment of the present invention, Fig. 1 is a schematic overall configuration diagram of the operation port device according to the first embodiment, Fig. 2 is an explanatory diagram of the operation when the cover body is opened and closed, Fig. 3 is an explanatory diagram of the operation when the cover body is fully closed, and Fig. 4 is a partial explanatory diagram of the operation port device according to the second embodiment. h... opening, 10... operation port device, 12... frame body, 14... cover body, 16... hinge part, 22... duct wall, 24... notch, 25... small connection part, 28
...Elongated connection portion, 30...long hole, 32...relief notch.

Claims (1)

[Claims for Utility Model Registration] 1. An operation port device constituted by an operation port provided in a duct wall near a damper, wherein a thin plate is carved so as to be connected at at least one hinge portion. An operation characterized in that a frame body having an opening substantially equal to the operation port and a lid body covering the opening of the frame body are formed, and the frame body is fixed with the opening aligned with the operation port. Mouth apparatus. 2. The hinge portion includes a small connecting portion that connects the frame and the lid by dividing the notch that divides the thin plate into the frame and the lid, and a small connecting portion on the frame side that is substantially orthogonal to the small connecting portion. 2. The operation port device according to claim 1, further comprising: an elongated hole formed in the small connecting portion to form an elongated connecting portion. 3. The hinge portion includes a small connecting portion that connects the frame and the lid by dividing the notch that divides the thin plate into the frame and the lid, and a small connecting portion that is formed to protrude from the frame and is connected to the small connecting portion. It includes a long side protrusion, and an elongated hole formed approximately at the center of the long side protrusion so as to form an elongated connection with the end of the long side protrusion. An operating port device according to claim 1 of the utility model registration claim, characterized in that: 4. The hinge part divides the notch that divides the thin plate into the frame body and the lid body, and forms an elongated connection part between the small connecting part that connects the frame body and the lid body, and the notch end part. , a registered utility model characterized in that it includes an elongated hole provided on the lid side in close proximity to the small connection part, and an escape notch connected to the notch tip and provided on the frame side. An operating port device according to claim 1. 5. The thin plate is engraved on the frame body to form a fixing part protruding in the opening direction, and the frame body is brought into contact with the operation port and the fixing part is pressed and bent inward of the duct wall to close the frame body. An operating port device according to any one of claims 1 to 4, which is fixed to a duct wall. 6. Forming a protruding knob body having a neck part and a knob part on a surface substantially symmetrical to the hinge part of the frame body, carving a thin hole in the lid body, and pushing the knob body up, Utility model registration claims 1 or 2, wherein the lid body is bent at the hinge part, a knob body is passed through the thin hole, and the knob body is twisted to lock the fully closed state of the operating port. The operation port device according to any one of Item 5.