JPH029859Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an air filter having a rectangular overbody.

As shown in FIG. 1, the conventional air filter which is the subject of this application has a square overbody 5 disposed inside a casing formed by an upper case 2 having an outlet 1 and a lower case 4 having an inlet 3. The upper and lower cases 2 and 4 have a structure in which fasteners 6 and 6a provided on the side walls of the upper case 2 are engaged with the locking portions 7 of the lower case 4 to fasten them together. Here, the rectangular overbody 5 is a well-known one as shown in, for example, Japanese Utility Model Publication No. 14901/1983, and is a rectangular paper body formed by folding a sheet of paper, with side walls provided on the sides. An elastic body 8 is formed around one side of the paper body.
The rectangular overbody 5 in the casing has an elastic body 8 provided on one side in pressure contact with the inner wall surface of the upper case 2, and the other side in contact with the bottom wall of the lower case 4, and the above-mentioned tightening tool It is held in place by 6.

In such a conventional air filter, in order to install the rectangular overbody 5 inside the casing, the square overbody 5 is first placed inside the lower case 4, and then the fasteners 6 of the upper case 2 are installed. The locking part 7 of the lower case 4 corresponding to this locks, and the upper case 2 is further moved to the right, and the fastener 6a provided on the other side wall of the upper case 2 is connected to the locking part 7 of the lower case 4. 7 and then tighten the upper and lower cases 2 and 4.
(Figure 2).

In this way, in order to tighten the upper and lower cases 2 and 4 together, instead of first bringing the upper and lower cases 2 and 4 into contact with each other in a predetermined position and then tightening them with the tightening tool 6, one side wall of the upper case 2 is tightened. The fasteners 6a are locked in the corresponding locking portions 7 of the lower case 4, and then the upper case 2 is moved to the right and the other fasteners 6a are locked.
The reason for taking the procedure of locking and tightening is that the number of times of tightening by each fastener, that is, the number of times corresponding to the number of fasteners, is halved, so fastening can be integrated quickly. Tightening work according to the tightening procedure is frequently performed.

However, on the other hand, when the upper case 2 is moved to the right, the elastic body 8 of the square overbody 5
also moves to the right under the force, and as a result,
There is a risk that the square overbody 5 may be deformed and damaged. Although the rectangular overbody 5 is relatively strong against the force acting downward from the elastic body 8, it is weak against the force acting leftward and rightward, so this drawback becomes noticeable.

In view of the above, the present application provides an air filter in which a protruding groove is provided in the pressing wall of the upper case so that the force during tightening does not act as a deforming force on the square overbody.

To explain this by way of example, FIG. 3 shows an air filter 10 of the present invention, in which a square-shaped overbody 13 is disposed in a lower case 11 with an inlet 12 provided in the bottom wall, and an outlet 14 is provided above the lower case 11. Place the provided upper case 15,
Tighten the upper and lower cases 11, 15 with clamps 16, 16
It is made by tightening with a.

On the outer periphery of the upper end of the side wall 11a of the lower case 11, a plurality of locking portions 17 that hang downward are provided at intervals. Further, the upper case 15 has a pressing wall 15b extending laterally at the lower end of the side wall 15a, and fixed and movable tightening clamps 16, 16a hanging downward are attached to the outer periphery of the side wall 15a at the locking portions. A plurality of pressure walls 17 are provided corresponding to the pressure walls 17.
5b are provided with protruding grooves 15c, respectively. The fixed tightening clamp 16 consists of an arcuate piece 19 having a bent portion 18 at its tip. Movable tightening clamp 16
The details of a are shown in, for example, Japanese Utility Model Application No. 57-201129, and similarly consist of an elastic arcuate piece 10a having a bent portion 18a at the tip.

The square overbody 13 has the same structure as the conventional one, and has an elastic body 20 made of a material such as polyurethane foam on the outer periphery of one side of a rectangular paper body, and the elastic body has a cross section. It forms a mountain shape.

The cross section of the protruding groove 15c of the pressing wall 15b of the upper case 15 corresponds to the shape of the elastic body 20 of the square overbody 13 and has a similar mountain shape. Upper and lower cases 15, 11
is tightened by the tightening clamps 16, 16a, the upper end of the elastic body 20 of the square overbody 13 is
It is inserted into the protruding groove 15c of the pressing wall 15b of the upper case 15.

In FIG. 3, the outside air is at the inlet 1 of the lower case 11.
2, flows through the rectangular overbody 13 and flows out to the outlet 14, where it is passed through. When the square overbody 13 becomes clogged after a predetermined period of time, the tightening clamps 16a and 16 are loosened, and the upper case 15 is closed.
, and replace the square overbody 13. That is, a new overbody 13 is placed inside the lower case 11, and the bent portion 18 of the fixed tightening clamp 16 provided on one side wall 15a of the upper case 15 is locked to the locking portion 17 of the lower case 11. , further upper case 1
5 is moved to the right when viewed from the front in the figure, and the movable tightening clamp 16a provided on the other side wall 15a of the upper case 15 is engaged with the locking portion 17 of the lower case 11, and then tightened. (Figures 3 and 4). the result,
When the upper case 15 is moved to the right as described above, the elastic body 20 of the square overbody 13 is deformed to the right by the pressing wall 15b provided with the protruding groove 15c of the upper case 15. There is no risk of force acting on it. When the upper and lower cases 15, 11 are completely tightened, a tightening force acts on the elastic body 20 substantially downward as indicated by the arrow in FIG.

As described above, since the air filter of the present invention has a protruding groove formed on the wall of the upper case, the force applied when assembling the rectangular overbody and the upper and lower cases together is absorbed by the angle. To prevent deformation and damage of a square overform body even when fastening work is performed without acting in a direction that deforms the overform body.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional air filter, FIG. 2 is a partial sectional view of FIG. 1, FIG. 3 is a sectional view of the air filter of the present invention, and FIG. FIG. 11...Lower case, 13...Square overbody, 15
...Upper case, 15b...Press wall, 15c...Protrusion groove, 16, 16a...Tightening clamp, 17...
Locking portion, 20... elastic body.

Claims (1)

[Scope of utility model registration request] A square filter body with an elastic body integrally formed on the outer periphery of one side is disposed in a lower case that has an inlet and a locking part on the side wall, and an outlet and a pressing force that extends laterally from the lower end of the side wall. In an air filter in which a tightening clamp of an upper case, which has a wall and a tightening clamp is provided on the side wall, and a locking part of the lower case are tightened, a protruding groove is provided in the pressing wall of the upper case, and a protruding groove is provided in the protruding groove. An air filter with an elastic rectangular filter inserted into the air filter.