JPH0326903Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air filter suitable for use by being attached to an air conditioner in a gas turbine room of a building, factory, or the like.

(Prior art) This type of conventional air filter has 15th and 16th air filters.
As shown in the figure, a zigzag-shaped material A having a plurality of bag-shaped parts is attached to a frame B having an L-shaped cross section at its periphery so that it can be detachably attached and fixed by pressing with a screw type fastener C. It is something.

More specifically, the peripheral edge a of the material A is provided with a holding frame member D having a U-shaped end face, with the peripheral edge a taught from the outer periphery, on the inwardly protruding support frame b1 surrounding the opening O of the frame B. is placed on the frame via a gasket E, and the upper surface of the U-shaped holding frame member D can be pressed and fixed with a screw type fastener C provided on the frame B side. The fixture C consists of a screw hole wall portion c1 that projects inward from the inner surface of the peripheral frame wall b2 of the frame B, and a screw c2 that is screwed into the screw hole wall portion c1. Generally, such screw-type fasteners C are provided at each of the four corners of the rectangular frame B so that the peripheral edge a of the material A can be evenly tightened.

(Problem to be solved by the invention) In the conventional air filter having the above-mentioned screw type fastener, each time the material A needs to be replaced, each screw C2 is loosened, the old material A is removed, and a new material is replaced. The peripheral edge a of the material A is pressed against the upper surface of the holding frame member D with the screw c2 in the same manner as described above, and is press-fixed to the support frame b1 via this. Not only is the work of tightening relatively troublesome and time-consuming, and the work of replacing materials is relatively inefficient, but also the screw c2 may become rusted in the threaded hole of the threaded hole wall c1, or the threads may be chipped. Problems such as the following problems tend to occur, and the replacement work does not go smoothly and uniform tightening cannot be achieved.

(Means for Solving the Problems) The present invention solves the above-mentioned drawbacks of the air filter using a frame equipped with the above-mentioned screw-type fasteners, and allows material replacement work to be performed smoothly in a short time. This provides an air filter that can
The periphery of the material is overlapped with the inwardly protruding support frame surface that surrounds the opening of the letter-shaped frame, and this periphery is
In an air filter that can be press-fixed to the support frame surface by a fastener through a presser frame member stacked on the outer surface of the air filter, and the material can be detachably attached to the frame, the fastener can be raised and lowered. It is configured as a clamp type having a freely movable gripping rod and a presser rod that moves forward and backward in conjunction with the raising and lowering of the gripping rod. The presser rod is mounted vertically and at a predetermined distance from the material, and the presser rod is moved forward and backward by raising and lowering the gripping rod, and the periphery of the material is held inside the material through the presser rod member. The material can be freely pressed and fixed to the side of the discharge support frame, and the material can be detachably attached to the frame.

(Function) Since the present invention is equipped with the above-mentioned clamp type fastener on the frame, by simply raising and lowering the gripping rod, the periphery of the material placed on the support frame can be held by the frame member on the upper surface. It is possible to press fixation to the support frame and release the fixation.

(Example) Embodiments of the invention will be described with reference to the accompanying drawings.

1 to 8 show an example of implementing the present invention. In the drawings, reference numeral 1 denotes a rectangular frame having an L-shaped cross section, and the frame 1 is composed of an inwardly protruding support frame 1a surrounding an opening 2 thereof and a circumferential frame wall 1b orthogonal thereto. 3 shows a material having a rectangular peripheral edge 3a in which a plurality of pouch-like parts are sutured and connected;
The peripheral edge 3a of the material 3 is held between a rectangular presser frame member 4 having a U-shaped cross section and fitted from the outer surface thereof. To attach the material 3 to the frame 1,
The following is an example of the present invention in which the peripheral edge 3a is placed on one side of the support frame 1a of the frame 1 via a rectangular frame-shaped gasket 5, and is attached to each of the four corners of the frame 1 in advance. The gripping rod 7 of the clamp-type fastener 6 to be described in detail is rotated in one direction to advance the presser rod 8 at the tip thereof, and directly presses the upper surface of the presser frame member 4 fixed to the peripheral edge 3a of the material 3. By doing so, the peripheral edge 3a of the material 3 is attached to the support frame 1 of the frame 1 on the lower surface thereof.
a and the presser frame member 4 by clamping and fixing,
The attachment of the material 3 to the frame 1 was completed to construct the air filter of the present invention. The material 3 is removed using the gripping rod 7 of each clamp-type fastener 6.
is rotated in the opposite direction from the previous direction to move the presser foot 8 backward. In such a case, the peripheral edge 3 of the material 3
Since the pressing and fixing by the presser rod 8 in a is released, it can be immediately removed from the frame 1.

The clamp-type fastener 6 is constructed as follows.

That is, the gripping rod 7 has a distal end located within the U-shaped recessed hole space 10 of the mounting groove frame 9 having a U-shaped cross section, and the distal end of the gripping rod 7 touches the opposite wall of the groove frame 9. 9a, 9
From the state in which it is pivoted to a horizontal shaft 10' fixedly installed across the space a and falls down along the length direction of the groove frame 9,
It is attached to the groove frame 9 so as to be able to rotate (swing) so that it can rise and fall upward with respect to the groove frame 9. At the tip of the concave groove space 10 of the groove frame 9, the presser rod 8 is slidably fitted into a hollow cylindrical body 11 provided at the tip of the groove frame 9. The presser rod 8 and the gripping rod 7 are connected to each other by a link member 12 whose both ends are pivotally connected to a shaft 8a provided through the rear end and a shaft 7a provided through the tip of the gripping rod 7, respectively. are connected to each other, so that the presser rod 8 moves forward and backward in conjunction with the raising and lowering operation of the gripping rod 7. Reference numerals 13 and 13 indicate mounting substrates formed by bending and extending the lower ends of the opposing walls 9a and 9a outward at right angles.

Each of the clamp-type fasteners 6 having the above configuration is arranged at each of the four corners of the frame 1, and the presser rods 8 are placed vertically downward on the inner surface of the rectangular circumferential side frame wall 1b, and the rectangular presser frame member on the lower surface thereof. Mounting substrates 13, 1 on both sides of the upper surface of 4 at a predetermined distance s to be described later.
In step 3, it was fixed using rivets, etc.

The predetermined interval s is such that the gripping rod 7 is rotated so that the link member 12 and the gripping rod 7 are connected to the presser rod 8.
At the end position of the operation, which is located on the same axis as the presser rod 8, the presser rod 8 moves forward with this rotation, and at the maximum forward position, its tip presses the upper surface of the presser frame member 4 on the lower surface, and the lower surface of the presser rod 8 is pushed forward. Peripheral edge 3a of material 3
is clamped and fixed to the support frame 1a of the frame 1, and corresponds to one stroke pitch of the forward and backward movement of the presser rod 8. In this case, the presser rod 8 is adjusted so that the distance s can be adjusted appropriately.
It is preferable that the screw rod 8a has a head portion _8a1 at its tip end, and a screw rod base 8b into which the screw rod 8a is screwed for an appropriate length.

In attaching the clamp-type fastener 6 to the circumferential frame wall 1b of the frame 1, when the gripping rod 7 is not in operation, that is, the circumferential edge 3a of the material 3 is spaced at the above-mentioned distance s.
For example, towards the outside of the frame 1 so as not to interfere with the operation when inserting it into the frame 1 or removing it from the space s, that is, so as not to protrude inwardly toward the opening 2 side of the frame 1. It is preferable to mount it so that it is oriented in a rotational position as shown by the chain line in the figure.

Thus, according to the invention, in order to attach the material 3 to the frame 1, its peripheral edge 3 is attached to its supporting frame 1a.
In this state, grasp the gripping rods 7 of each clamp-type fastener 6 located at the four corners of the frame 1 on the upper surface of the presser frame member 4 placed on the upper surface of the frame 1, and then If the frame 1 is rotated inwardly from the tilted position during operation and stands perpendicular to the support frame 1a of the frame 1, the presser rods 8 will move forward with the rotation and touch the upper surfaces of the presser frame members 4 in the forward direction. Attachment is completed by pressing evenly at the four corners to press and fix the peripheral edge 3a of the material 3 on the lower surface. When necessary, when it is desired to replace the material 3 with a new one, the gripping rod 7 of each clamp-type fastener 6 can be tilted to the outside of the frame 1, and the presser rod 8 will move back and press the material 3. The fixation is released and the material 3 can be removed, and the new material can be removed by inserting the periphery of the new material into the space s and simply raising it vertically by rotating the gripping rod 7 to the operating side in the same way as before. As shown, the material 3 can be quickly attached to and removed from the frame 1 simply by one-touch operation of the clamp-type fastener 6. There is no need to worry about rust or damage to the threads, ensuring smooth attachment and detachment of materials over and over again.

Although not shown, the material 3 may be attached to the frame 1 from the opposite side of the frame 1 from the case of the above-described embodiment.

9 to 14 show other embodiments of the present invention. In this embodiment, the peripheral edge 3a of the material 3 can be pressed and fixed to the support frame 3a inside the clamp-type fastener 6 attached to the frame 1 without inserting it into the space s directly below it. Indicate the case,
For this purpose, the clamp-type fastener 6 has been modified as follows. That is, the difference from the clamp-type fastener 6 of the above embodiment is that a fixing nut 14 is screwed into the screw rod 8a of the presser rod 8, and the head _8a1 of the screw rod 8a and the nut 14 are screwed together. A presser piece 15 is rotatably fitted in between, and is provided so that it can be clamped and fixed at a desired position by the screw rod 8a and the nut 14. The clamp-type fastener 6 is narrow in width and lacks the mounting boards 13, 13 that protrude from the lower ends of the opposing walls 9a, 9a of the groove frame body 9 on both sides, as seen in the previous embodiment. A hanging board 9 for attachment extends downward from the opposing wall 9a on the left side toward the presser rod 8.
A' is provided, and this board 9a' is attached to the inner surface of the peripheral wall 1b of the frame 1 by welding, and the frame 1
The inner side of the support frame 1a exists as a mounting surface for the peripheral edge 3a of the material 3 inside the clamp-type fastener 6 to which it is attached.

In this case, since the clamp-type fastener 6 is attached to the frame 1 on its side, the raising and lowering movement of the gripping rod 7 is performed along the frame 1, and it does not fall toward the material 3 side. Therefore, the operation of attaching and detaching the material 3 to the frame 1 can be carried out smoothly without any hindrance. In this example,
The peripheral edge 3a of the material 3 is directly connected to the support frame 1a of the frame 1.
By pressing the upper surface with the presser member 4, the surface of the support frame 1a can be airtightly bonded, and as in the previous embodiment, it has a U-shaped cross section. It is possible to omit the use of the gasket 5 which is required when the material periphery 3a is provided with the holding frame member 4, and the structure and assembly are simplified. The presser frame member 4 of this embodiment is formed with an L-shaped cross section, and when one flat piece is stacked on the upper surface of the peripheral edge 3a of the material 3, the remaining one piece with the L-shaped cross section is located at the rear. As a support frame having a predetermined height that stands up, the upper end of the support frame receives the tip of a presser piece 15 provided on the clamp-type fastener 6. It is preferable that the holding frame member 4 is provided in advance in one piece around the outer periphery of a basket-shaped retainer 16 made of wire that holds the bag-shaped material 3 from the front and rear.
In this way, after the periphery 3a of the material 3 is stacked on the frame 1, and when the retainer 16 is stacked from the back side, the presser frame member 4 provided integrally on the outer periphery can be overlapped on the periphery 3a of the material 3, and the assembly is completed. can be facilitated.

In this embodiment, when the material 3 is not attached to the frame 1, the clamp-type fasteners 6 attached to the four corners of the frame 1 when the frame 1 is in the upright state of use. The holding piece 15 hangs down due to its own weight, and automatically allows the peripheral edge 3a of the material 3 to overlap with the inner circumferential surface of the support frame 1a of the frame 1, and its upper surface onto the holding frame member 4. After these polymerizations, the presser piece 15 is
The nut 14 is rotated inward to be orthogonal to the presser frame member 4, and the nut 14 is tightened between the screw rod 8a and the head _8a1 to fix the orthogonal state, and the grip rod 7 is raised to hold the presser rod 8. When moving forward, press the holding piece 1
5 can contact and press the holding frame member 4 to airtightly press and fix the material 1 to the frame 1, completing the construction of the air filter of the present invention. If material 3 needs to be replaced during the use of the air filter,
By simply tilting the gripping rod 7 of each clamp-type fastener 6, the presser rod 8 is moved back and the peripheral edge 3 of the material 3 is moved back.
The pressing and fixing action on a is released, and the presser frame member 4 and the material 3 can be separated and removed. Removal of these, installation of new material 3, and presser frame member 4
The nuts 14 of each fastener 6 are loosened to facilitate repolymerization. In that case, the presser piece 15
rotates downward by its own weight, retreats to the outside of the presser frame member 4 and the periphery 13a of the material, and hangs down, thus removing the presser frame member 4 and the old material 3, and attaching the new material to the frame 1 and the presser frame. Insertion and polymerization of the member 4 becomes easy.

(Effects of the invention) As described above, according to the present invention, since a clamp-type fastener is attached to the frame, by simply raising and lowering the gripping rod of the fastener, the peripheral edge of the material can be pressed and fixed and released. It is easy to operate and has the effect of overcoming the above-mentioned disadvantages of conventional screw-type fasteners.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of an air filter according to an example of the present invention, Fig. 2 is a rear view thereof, Fig. 3 is an enlarged view of the main parts of Fig. 1, and Fig. 4 shows the main parts in an inoperative state. An enlarged view, FIG. 5 is a top view of one aspect of an example of the clamp type fastener used in the above embodiment, FIG. 6 is a bottom view thereof, and FIG. 7 is a partially cut away side view. 8th
The figure is a partially cut-away side view of another embodiment, FIG. 9 is a partially cut-away side view of another embodiment, FIG. 10 is an enlarged view of the main part, and FIG. 11 is the rear side. Figure, 1st
Figure 2 is a rear view of the frame before the material is attached, Figure 13 is an exploded perspective view of the air filter in Figure 9, and Figure 14 is a perspective view of the clamp type fastener used in this other example. , FIG. 15 is a cutaway side view of the main parts of a conventional air filter, and FIG. 16 is an enlarged view of the main parts. 1... Frame, 1a... Frame support frame, 1b...
Frame peripheral side frame wall, 2...opening, 3...material, 3a
... Material periphery, 4... Holding frame member, 6... Clamp type fastener, 14... Nut, 15... Holding piece.

Claims (1)

[Scope of utility model registration request] The peripheral edge of the material is overlapped with the inwardly protruding support frame surface that surrounds the opening of the frame having an L-shaped cross section, and this peripheral edge is fastened to the support frame by a tightening tool via a holding frame member overlapped with the outer surface of the support frame surface. Can be fixed by pressing against the surface,
A clamp type air filter in which the material can be detachably attached to the frame, which includes a gripping rod that can freely raise and lower the clamping tool, and a holding rod that moves forward and backward in conjunction with the raising and lowering of the gripping rod. The clamp-type fastener is attached to the frame with its presser rod oriented perpendicularly and at a predetermined distance from the inwardly projecting support frame surface of the frame, and the clamp-type fastener is gripped. By raising and lowering the rod, the presser rod moves forward and backward, and the peripheral edge of the material is freely pressed and fixed against the surface of the inward discharge support frame through the presser rod member, so that the material can be attached to and detached from the frame. An air filter that can be attached.