JP4632154B2 - Air filter - Google Patents

Description

  The present invention relates to an air filter that includes a filter medium and a filter frame that are bent in a zigzag shape, and includes a filter frame that accommodates the filter medium easily and interchangeably.

  As this type of air filter, for example, as shown in FIGS. 7 and 8, there is a filter frame 101 formed in a square shape and containing a filter medium 102 bent in a zigzag shape. In this device, the left and right ends of the upper plate 103 are fixed to the both side plates 104 with screws 105, and the filter medium can be replaced by removing the screws 105 and removing the upper plate 103. However, this air filter requires a tool for removing the screw 105, which takes time and may cause the removed screw 105 to be lost.

In addition, a small window is provided at the upper ends of the left and right side plates of the filter frame formed in a rectangular shape in Patent Document 1, and a protruding member that can be attached to and detached from the small window is integrally attached to the lid side plate, and the filter medium is attached to the filter frame An invention that can be exchanged is disclosed. However, according to the present invention, the protrusion member must be specially manufactured and attached to the small window so as to be detachable. Therefore, labor is required for assembling the filter frame, and there is a limit to cost reduction. there were.
JP2004-41879

Problems to be solved by the invention

  The present invention is intended to solve the above-described problems, and provides an air filter that can easily and reliably assemble a filter frame to smoothly exchange filter media and maintain sufficient sealing performance. With the goal.

Means for solving the problem

  The solution of the present invention is a filter medium exchange type air filter in which a filter medium bent in a zigzag shape can be freely replaced with a filter frame composed of an upper plate, a lower plate and side plates on both sides. Provided is an air filter provided with a filter frame that is joined to a lower plate, bent at both left and right ends of the upper plate toward the side plate, and fitted into the upper portions of both side plates so that the upper plate can be easily attached and detached. Is.

The operation of the above problem solving means is as follows. In other words, the left and right ends of the upper plate of the filter frame are bent toward the side plates and fitted into the upper portions of the both side plates. Since the fitted upper plate can be removed, the filter media can be easily replaced. Next, the upper plate can be inserted into the upper part of both side plates by simply inserting the upper plate and used again as a new air filter. It is what I did. Thus, the air filter includes a filter frame that can be easily attached and detached by operations such as lifting and pushing the upper plate.

The invention's effect

As described above, the filter frame of the present invention has the following effects.
(1) Since the left and right ends of the upper plate of the filter frame are bent toward the side plates and fitted into the upper portions of the both side plates, the upper plate can be easily attached and detached.
(2) Since the filter medium can be stored in the filter frame by lifting or pushing the upper plate, no tools or the like are required for removing the screws, and it does not take time and effort. There is no problem of losing parts.
(3) Since the structure is simple and no special parts are required, the cost can be reduced.
(4) Since the outer surface of the filter frame is flat on both the front and rear surfaces and the periphery, it is optimal for installation such as a lateral slide method.

Hereinafter, filter frames according to embodiments of the present invention will be described with reference to the accompanying drawings.
(Embodiment)
The filter frame 1 includes an upper plate 2, a lower plate 3, and side plates 4a and 4b on both sides. The left and right ends of the upper plate 2 are bent toward the side plates 4a and 4b to form bifurcated portions 5a and 5b, respectively. A plate piece 7 is attached to the upper inner surfaces of the left and right side plates 4a and 4b with rivets 8 via washers 6. The upper plate 2 can be attached and detached by fitting the bifurcated portions 5a and 5b at the left and right ends of the upper plate 2 into the gaps between the plate pieces 7 formed on the upper inner surfaces of the side plates 4a and 4b and the side plates 4a and 4b. Can be done. Depending on the thickness of the forked portions 5a and 5b at the left and right ends of the upper plate 2 and the thickness of the washer 6, that is, the clearance, the dimensional relationship with the side plates 4a and 4b when fitted is made restrictive. Thus, the upper plate 2 can be attached and detached reliably and easily without detaching the upper plate 2 when handling the air filter. According to this fitting structure, it is not necessary to manufacture a special part, and there is no possibility of detaching parts such as screws. An elastic sealing material 9 is attached to the inner surfaces of the side plates 4a and 4b and the inner surfaces of the upper plate 2 and the lower plate 3, and the periphery of the stored filter medium 10 and the inner surface of the filter frame 1 are in contact with each other to maintain airtightness. Is done.

  In the present embodiment, the left and right ends of the upper plate 2 are bent to form the bifurcated portions 5a and 5b. Further, the bifurcated portions 5a and 5b obtained by bending the left and right ends of the upper plate 2 may be formed by attaching plate-like parts to the upper plate with rivets or the like. Furthermore, the washer 6 used for the upper inner surfaces of the left and right side plates 4a, 4b is not limited to this, and may be any spacer.

  The present invention is a filter medium filter-type air filter with a filter frame that can easily and freely store a filter medium folded in a zigzag shape. When the filter medium is at the end of its life, only the filter medium needs to be discarded. It is the best one.

It is a perspective view of the air filter which shows the Example of this invention. It is a perspective view which shows the state which decomposed | disassembled the air filter of FIG. It is sectional drawing which shows the upper relationship of an upper board and a side board. It is an inner surface view which shows the upper part relationship of an upper board and a side board. It is a plane sectional view showing the upper part relation of an upper board and a side board. It is sectional drawing which shows the lower part relationship of a lower board and a side board. It is a perspective view of the conventional air filter. It is a perspective view which shows the state which decomposed | disassembled the conventional air filter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Filter frame 2 ... Upper plate 3 ... Lower plate 4a, 4b ... Side plate 5a, 5b ... Forked shape 6 ... Washer 7 ... Plate piece 8 ... Rivet 9 ... Sealing material 10 ... Filter media

Claims (1)

  In a filter frame consisting of an upper plate and a lower plate with bent parts at the left and right ends, and side plates on both sides with rivets attached to the inner surface of the upper end via a washer, the upper part between the plate piece and the side plate Create a gap to fit the bent part of the plate, and then apply an elastic seal material to the inner surfaces of the upper and lower plates and the side plates on both sides, and bend the left and right ends of the upper plate into the gap formed on the side plates on both sides. An air filter that allows a filter medium folded in a zigzag shape to be stored in a filter frame by detachably attaching a shape portion.

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