JPH05252619A - Filter device for ventilation port - Google Patents

Abstract

PURPOSE:To easily replace a filter in a ventilation port in which the filter is mounted in a rectangular mounting frame of a U-shaped section and fixedly held at a cover having the port through the frame. CONSTITUTION:Either right or left side of a mounting frame 4 is rotatably supported to a cover through a hinge 43, an insertion port 4a of a filter 5 is opened at a side face of the other side of the frame 4, and a fixing decoration bolt 45 to be used also as a handgrip is provided. A threaded hole to be engaged with the bolt 45 is provided at the cover. A locking seat 13 for shielding the port 4a in a locked state of the frame 4 is provided. The filter 5 is always effectively held in the frame 4. At the time of replacing, front side of the port 4a is opened by rotating the frame 4, and the filter can be easily attached or detached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for preventing entry of dust or the like, which is provided in a ventilation port for taking in outside air for cooling in electric equipment such as a switchboard.

[0002]

2. Description of the Related Art A filter device of this type is known as shown in FIGS. In the figure, reference numeral 1 denotes a cover which serves as a plate of a switchboard and has a ventilation port 2 opened. Reference numeral 3 is a filter device provided in the ventilation port 2 and includes a mounting frame 4 and a filter 5. The mounting frame 4 has a substantially U-shaped cross section, is formed in a square frame shape having an insertion opening 4a on one side thereof, and is provided with a flange 41 having a mounting hole 41a on the outer periphery thereof. The filter 5 is formed into a sandwich plate shape whose both surfaces are protected by an aluminum lath 51, and is inserted into the mounting frame 4 through the insertion port 4a so that the filter 5 can be inserted and removed.

The filter device 3 is attached to the vent hole 2 by fitting the mounting hole 41a into the mounting bolt 11 protruding from the cover 1 and tightening the wing nut 12. Then, the outside air taken in through the ventilation port 2 is filtered by the filter 5 to become clean air and is sucked into the switchboard.

[0004]

In the conventional filter device 3, when the filter 5 is replaced for cleaning or the like, many wing nuts 12 are loosened and the entire device is removed from the cover 1 and then the insertion port 4a. Therefore, the filter 5 must be attached and detached, and there is a drawback that the replacement work requires a lot of labor and time.

An object of the present invention is to provide a filter device having a vent hole which allows the filter to be easily removed and installed in a short time.

[0006]

In order to achieve the above object, according to the present invention, there is provided a mounting frame which is formed in a rectangular frame shape having a substantially U-shaped cross section and which is mounted on a plate body having a vent, and this mounting frame. In a filter device of a ventilation port including a filter detachably attached to a frame, one of the left and right side portions of the mounting frame is rotatably supported by the plate body via a hinge, and the other side of the attachment frame is supported. A fixing means for opening the insertion port of the filter and detachably fixing the other side portion to the plate body is provided on the side surface of the portion.

[0007]

The front of the insertion slot is released by releasing the fixing means and rotating the mounting frame. Therefore, the filter can be easily pulled out and inserted from the insertion port.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 4 show an embodiment of the present invention, in which parts common to or the same as those in FIGS. 1 to 4, the conventional flange (31 in FIGS. 5 and 6) of the mounting frame 3 is deleted, the insertion opening 4a is opened on the left side surface, and the hinge 43 is mounted on the right side portion. It is supported by the cover 1 so as to be rotatable in the horizontal direction via. Further, the handle seat 44 is attached on the front surface of the left side portion having the insertion port 4a.
Decorative bolt 45 that is rotatably held in place and doubles as a handle
Is provided. On the other hand, a fixed seat 13 having a screw hole into which the decorative bolt 45 is screwed is fixed to the cover 1 at a position facing the insertion port 4a.

In the above arrangement, the filter device 3 is
The decorative bolt 45 is normally screwed into the screw hole of the fixed seat 13 and fixed to the cover 1. The insertion port 4a is shielded by the fixed seat 13, and the filter 5 is securely held in the mounting frame 4. Then, the outside air sucked from the ventilation port 2 is sent into the switchboard by the filter 5. The filter 5
At the time of replacement, the decorative bolt 45 is loosened, and the mounting frame 4 is rotated in the horizontal direction via the hinge 43.
The front is open. Then, the dirty filter 5 is removed and a new filter is attached. Filter 5 like this
Can be easily replaced by simply rotating the mounting frame 4.

[0010]

According to the present invention, there is provided a mounting frame which is formed in a rectangular frame shape having a substantially U-shaped cross section and which is mounted on a plate body having a vent, and a filter which is detachably mounted on the mounting frame. In the vent hole filter device, while supporting one of the left and right sides of the mounting frame rotatably on the plate through a hinge, and opening the insertion port of the filter on the other side surface, Further, since the fixing means for detachably fixing the other side portion to the plate body is provided, the front of the insertion opening is opened and the filter is easily attached / detached only by rotating the attachment frame. Therefore, the replacement work of the filter becomes extremely easy and can be performed in a short time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a filter device showing an embodiment of the present invention.

FIG. 2 is a front view of the filter device of FIG.

3 is a right side view of the filter device of FIG.

FIG. 4 is a left side view of the filter device of FIG.

FIG. 5 is a sectional view of a conventional filter device.

6 is a front view of the filter device of FIG.

[Explanation of symbols]

 1 Cover (Plate) 2 Vent 3 Filter Device 4 Mounting Frame 4a Insert 5 Filter 13 Fixed Seat 43 Hinge 45 Decorative Bolt

Claims (2)

[Claims] 1. A filter device having a vent, which is formed in a rectangular frame shape having a substantially U-shaped cross section, and which comprises a mounting frame mounted on a plate body having a vent and a filter detachably mounted on the mounting frame. , One of the left and right side portions of the mounting frame is rotatably supported by the plate body via a hinge, and the insertion opening of the filter is opened on the side surface of the other side portion, and the other side portion A filter device for a vent, comprising a fixing means for removably fixing the sheet to the plate body. 2. The filter device according to claim 1, wherein the fixing means is provided on the mounting frame, and a fixing seat fixed to the plate body to shield at least a part of the insertion port when the mounting frame is fixed to the plate body. And a bolt for fixing the mounting frame to the plate body by being screwed into the screw hole of the fixed seat.