JP3024527B2 - Air filter for air conditioner and its mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air filter for an air conditioner and a mounting structure thereof.

[0002]

2. Description of the Related Art When an air filter is mounted on an air conditioner, in order to prevent the air filter from going deeper than a predetermined position, conventionally, as shown in FIG. A method is adopted in which a step 70 is provided on the surface, and when the air filter 120 is inserted, the step 70 is applied to a part of the front grill to fix the air filter 120.

Another conventional method of locking the air filter in a predetermined position is as shown in FIG. 5 and FIG. 6 which is an enlarged view of a portion C in FIG. In this method, the air filter 40 is integrally formed, and the tip of the air filter 110 is brought into contact with the projection 40 to lock the air filter. In this case, the projection 40 is inclined forward, and the inclined projection 40 supports the tip of the air filter 110 so as not to fall off. In FIG. 5, reference numeral 80 denotes a support member which is attached to the casing 90 and supports the lower flat portion of the air filter 110.

[0004]

However, the air filter 120 of the conventional air conditioner shown in FIG.
Since there are steps 70 on both side surfaces of the frame 10, the width of the upper part of the air filter is smaller than that of a rectangular air filter having no steps, and thus the air suction area is smaller. Further, in the manufacturing process of the air filter, in order to remove the filter net 20 (the dashed line portion in FIG. 4) protruding from the side surface of the filter frame 10, the side portion 71 of the upper portion of the air filter having a small width per one side of the filter frame 10. A total of three degrees must be cut along the step part 70 perpendicular to this, and the side part 72 at the bottom of the wide air filter. Thus, the air filter 1 shown in FIG.
In the case of 20, the number of times the filter net is cut increases the manufacturing cost.

In the above-described conventional method shown in FIGS. 5 and 6, the air filter 110 itself having no step in the frame 11 can be used, so that the air suction characteristic to the air filter 120 having the step shown in FIG. There is no problem of area reduction.
However, as shown in FIG. 6, since the projection 40 is inclined with respect to the direction in which the mold is removed, the mold is slid out to integrally form the projection 40 on the back surface of the front grill 60. This necessitates a complicated structure of the mold and increases the manufacturing cost.

Therefore, an object of the present invention is to provide a reliable positioning in an air conditioner without reducing the air suction area and without increasing the number of filter net cuts in the manufacturing process, and to provide a complicated front grill. An object of the present invention is to provide an air filter of an air conditioner that does not require a mold structure and a mounting structure thereof.

[0007]

In order to achieve the above object, an air filter of an air conditioner according to the first aspect of the present invention and a mounting structure thereof are provided with a bendable rectangular frame and a net stretched over the frame. An air filter mounting structure comprising: a locking projection that protrudes with respect to a surface formed by the frame and a net, on both sides of a front surface of the frame that is curved into a convex shape; Side can pass through, and
It is characterized by comprising a front grille and a support member each having a guide portion constituting portion for locking the locking projection urged by the bending of the frame.

In the air filter of the air conditioner and the mounting structure thereof according to the first aspect of the present invention, the side portion of the bendable rectangular frame on which the air filter net is stretched is supported by the guide portion constituting portion of the front grille. The frame is inserted and passed between the guide portion and the component, and the front side of the frame is bent or bent so as to protrude to urge the locking projections provided on both sides on the front side of the frame. The air filter is attached by locking the stop projection to the guide portion constituting portion of the front grill.

In the air filter and the mounting structure thereof according to the first aspect of the present invention, the front side of the frame is convexly curved, and the locking projection is formed by utilizing the urging force generated when the frame is curved. Since the locking projection is locked to the component part, the locking projection does not come off from the guide part configuration part of the front grill, and the air filter is securely attached.

In the air filter and its mounting structure according to the first aspect of the present invention, since the locking projection is provided on the air filter frame, the conventional projection in which the inclined projection is integrally provided on the back surface of the front grille. Compared with a conventional one, a slide mold for the inclined projection is not required, so that the mold structure is simplified and the service life of the mold used is extended. Therefore, the manufacturing cost can be reduced.

Furthermore, in the air filter and the mounting structure thereof according to the first aspect of the present invention, since the frame of the air filter is rectangular, there is no problem that the air suction area is reduced unlike an air filter having a step. Also, when manufacturing the air filter, the filter net protruding from both sides of the frame can be cut once per side and two times in total on both sides. The number of cuts is compared with the air filter with a step (total six times on both sides). And will be greatly reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments.

FIG. 1 is a plan view of an air filter according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. 1 and 2, the air filter 100 includes a bendable rectangular frame 1 made of plastic or the like, and a net 2 stretched over the frame 1. In FIG. 1, the net 2 is only partially shown to simplify the drawing. Further, the frame 1 and the net 2 are provided on both sides of the frame 1.
Are provided with engaging projections 3 (see FIG. 3) having a triangular cross section projecting from the surface formed by the above.

Since the air filter 100 has no steps, the air suction area is larger than that of the conventional air filter 120 having steps 70 on both sides. Further, as shown in FIG. 4, the conventional air filter 120 having a step has a side portion 71, a step 70, and a side portion 72 of the frame 10 for cutting the filter net protruding from the side surface of the frame.
In this case, the air filter of the present invention has two steps on both sides because the frame 1 has no step, thereby reducing the manufacturing cost.

FIG. 3 is a cross-sectional view of an air conditioner provided with the air filter 100 of FIG. 1, and FIG. 3B is an enlarged view of a mounting portion of the air filter. As is clear from FIG. 3, when the air filter 100 is attached to the air conditioner, the air filter 100 is convexly curved to the front side. As can be seen from the enlarged view B of FIG. 3, the engaging projection 3 is provided on the front side of the frame 1 that is curved to be convex, and is perpendicular to the surface formed by the frame 1 and the net 2. It is protruding.

The side part of the air filter 100 is provided with a front grille side guide part 4 having an L-shaped cross section which forms a part of the front grille 6, and opposed to the front grille side guide part 4. The air filter 100 is located between the support member-side guide portion component 5 having a substantially rectangular cross section.
Are engaged with the vertical portion 4a of the front grille side guide portion constituting portion 4. The supporting member-side guide portion constituting portion 5 is provided with a lower flat portion 100a of the air filter 100.
And supports the air filter 100 from below. Therefore, the air filter 100 is prevented from dropping downward. When the air filter 100 is installed in the air conditioner, the air filter 100 is introduced from the lower portion of the front grille 6 and the engagement of the projection 3 hits the vertical portion 4a of the front grille side guide portion 4 and stops. The horizontal part 4b of the guide part 4 and the guide part 5 on the support member side serve as guide parts for guiding both sides of the frame 1.

As described above, the front grille-side guide portion constituting portion 4, which is a part of the front grille 6, has an L-shaped cross section and is not inclined with respect to the direction in which the mold is pulled out. When molding the front grill 6, the mold does not have to slide. Therefore, as compared with the conventional one in which the projection serving as the filter locking portion is inclined on the back surface of the front grill with respect to the direction in which the mold is pulled out and integrally formed on the front grill.
The mold structure is simplified, the mold life is extended, and the manufacturing cost can be reduced.

When the air filter 100 is installed in an air conditioner, the air filter 100 is in a curved state as shown in FIG. Therefore, the convexly curved side of the air filter frame 1 always pushes the guide portion constituting portion 4 of the front grille 6, and the projections 3 are provided on the convexly curved front side of the frame 1, In the state where there is no play between the frame 1 and the front grille side guide part constituting part 4, the projection 3
Hits the front grille side guide portion constituting portion 4, and the air filter 100 is reliably positioned at a predetermined position.

In the above embodiment, the projection 3 is
The projection 3 is provided on the front side curved to be convex, and is engaged with the guide portion constituting portion 4 of the front grille 6, but the projection 3 may be provided at another place. For example, it can be provided on the rear side of the frame 1. In this case, a guide portion constituting portion that engages with the projection 3 can be provided on the support member 8.

[0020]

As is apparent from the above description, in the air filter of the air conditioner according to the first aspect and the mounting structure thereof, the front side of the air filter frame is curved to be convex, and the biasing force generated at the time of bending is used to engage the air filter. Since the stopping projections are locked to the guide component of the front grill, the locking projections do not come off the guide component of the front grill, and the air filter can be securely attached.

Further, in the air filter of the air conditioner of the first aspect and the mounting structure thereof, since the locking projection is provided on the air filter frame, the inclined projection is integrally provided on the back surface of the front grille. As compared with the one of the above, a slide mold for the inclined protrusion is not required, the mold structure is simplified, the service life of the mold to be used is extended, and the manufacturing cost can be reduced. .

Further, in the air filter of the air conditioner and the mounting structure thereof according to the first aspect, since the air filter has a rectangular frame, the air suction is larger than that of the air filter having steps on both sides. Area available. In addition, in order to cut off the filter net protruding from the side surface, the conventional filter having a step needs to be cut six times per side surface. The number of times the filter net is cut can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of an air filter according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view of an air conditioner to which the air filter of FIG. 1 is attached. In the figure, the portion B is an enlarged view of the engagement projection of the air filter and the guide portion in the air conditioner.

FIG. 4 is a plan view of a conventional air filter.

FIG. 5 is a cross-sectional view of an air conditioner equipped with another conventional air filter.

FIG. 6 is an enlarged view of a portion C in FIG. 5;

[Explanation of symbols]

1, 10, 11 ... frame, 2, 20 ... net, 3 ... projection, 4 ... front grille side guide part constituent part, 5 ... support member side guide part constituent part, 6, 60 ... front grille, 8, 80 ... support Components, 9,
90: casing, 40: inclined projection, 70: step, 100, 110,
120 ... Air filter.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 1/00 371

Claims (1)

(57) [Claims] An air filter mounting structure comprising a bendable rectangular frame (1) and a net (2) stretched over the frame (1), wherein the air filter has a convex shape. On both sides of the front side that is curved,
A locking projection (3) protruding from a surface formed by the frame (1) and the net (2) is provided so that a side portion of the frame (1) can pass therethrough and the frame (1) Front grille having guide component parts (4) and (5), respectively, on which the locking projections (3) urged by bending are locked.
An air filter mounting structure for an air conditioner, comprising: (6) a support member (8).