JPH0716416A - Air filter - Google Patents

Abstract

PURPOSE:To provide an air filter where adhesive surfaces are not stuck one on another or other things are not stuck on the adhesive surfaces and adhesion between a filter medium and a gasket is improved. CONSTITUTION:The air filter consists of a filter medium 1 folded zigzag, gaskets 2 arranged on both the side ends 15, 16 of the folds of the filter medium 1, and adhesive surfaces 20 formed on the opposited surfaces of the gaskets 2 to the filter medium 1. The both the side ends 15, 16 of the folds of the filter medium are stuck on the adhesive surface 20. Supporting members 31, 32 are arranged on the upper surface and the lower surface in the adhesive surfaces respectively, and are stuck on them or cover them. Tip supporting members may be arranged on the tip surfaces farther than both the tips of the folds of the filter medium in the adhesive surfaces and be stuck on them or cover them. Instead of the supporting members, non-adhesive materials may be applied to the adhesive surfaces. A deodorizing filter medium to which a deodorant is fitted may be put on one surface of the filter medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner,
The present invention relates to an air filter used for an air conditioner or the like.

[0002]

2. Description of the Related Art Air conditioners and air conditioners for automobiles have built-in air filters. As the air filter, conventionally, for example, as shown in FIGS. 10 and 11, a filter medium 1 folded in a zigzag shape, and both side ends 15 of the filter medium 1 for maintaining the shape of the filter medium 1 and preventing rattling, 16
And a gasket 2 adhered thereto.

The gasket 2 comprises a base material such as urethane foam and an adhesive applied to the surface facing the filter medium. On the adhesive surface 20 coated with this adhesive,
The folded both ends 15, 16 of the filter medium 1 are adhered.
The air filter removes dust in the air by passing air from the front side surface to the back side surface of the filter medium 1.

[0004]

However, in the above air filter, the size of the gasket 2 needs to be larger than that of the filter medium 1 in order to maintain the shape of the filter medium 1 and prevent dust from leaking. Therefore, a part of the adhesive surface 20 of the gasket 2 is exposed from the folded both side ends 15 and 16 of the filter medium 1, and the adhesive surfaces 20 of the plurality of air filters stick to each other during transportation or handling. There is. Further, when the air filter is put in a vinyl bag during transportation, the vinyl bag adheres to the air filter. Therefore, when trying to peel them off, the gasket 2 sometimes peels from the filter medium 1 and the air filter may be disassembled.

Further, as described above, the folded side ends 1 of the filter medium 1 are
In the case where 5 and 16 are adhered only by the adhesive surface 20 of the gasket 2, both tips 13 and 14 of the filter medium 1 in the zigzag direction are folded.
However, there is a problem that the filter medium 1 is easily peeled off from the gasket 2 due to the repulsive force against bending. In view of such conventional problems, the present invention aims to provide an air filter in which adhesive surfaces or other objects do not adhere to the adhesive surface and the adhesiveness between the filter medium and the gasket can be improved. Is.

[0006]

According to the present invention, there is provided a filter medium folded in a zigzag shape, gaskets arranged at both ends of the folded filter medium, and an adhesive surface provided on a surface of the gasket facing the filter medium. An air filter comprising a supporting member for supporting the shape of the filter medium, wherein the both side ends of the filter medium are adhered to each other by the adhesive surface. Also, in the air filter, the supporting member is disposed on the upper surface of the upper part and the lower surface of the lower part than the lower ends of both ends of the folding, or in the vicinity of the upper surface and the lower surface.

What is most noticeable in the present invention is that the exposed portion of the adhesive surface of the gasket is covered with the support member. The filter medium has a zigzag-folded shape, and both side ends and both folded ends are formed on both sides and the tip thereof. The both side edges of the folding means both side surfaces facing both ends of the zigzag ridgeline of the filter medium, that is, both side surfaces perpendicular to the ridgeline. The both ends of the folding means both ends in the folding direction of the filter medium, that is, both ends in the zigzag direction.

The gasket uses a base material such as urethane foam, a filter medium, and rubber, and has an adhesive surface on one side facing the filter medium. An acrylic or polyamide adhesive is applied to the adhesive surface. The folded both ends of the filter medium are adhered to the adhesive surface by utilizing the adhesive force. The part of the adhesive surface where the filter medium is not adhered has the adhesive surface exposed.

The supporting member is adhered to the upper surface of the filter medium above the upper ends of both sides of the folding and the lower surface of the lower side of the lower ends of both sides of the folding on the adhesive surface of the gasket. Alternatively, a gap is provided near the upper surface and the lower surface, for example, between the adhesive surface. The exposed portion of the adhesive surface can be covered by adjusting the position where the support member is attached to the adhesive surface.

The support member preferably projects slightly above and below the gasket. As a result, the upper and lower parts of the adhesive surface of the gasket can be completely covered. As the supporting member, a hot-melt material that is melted by heating and hardened at room temperature or lower, or an epoxy-based material that is hardened by ultraviolet irradiation, an ultraviolet-curable material such as a polyurethane-based material, or the like is used.

Next, it is preferable that a tip support member is provided on the tip surface of the adhesive surface of the gasket, which is more distal than the folded tips of the filter medium, and the tip support member is bonded to the adhesive surface. Or near the upper and lower surfaces,
For example, a gap may be provided between the adhesive surface and the adhesive surface.

The tip support member fixes both folding tips of the filter medium. Therefore, the folding tips suppress the repulsive force against bending of the filter medium and improve the adhesiveness between the filter medium and the adhesive surface. Further, it is possible to cover the exposed portion of the tip of the adhesive surface rather than both folded tips of the filter medium. As the tip support member, the same material as the support member is used.

Next, a comb tooth-shaped member may be arranged on the adhesive surface of the gasket from above and below the filter medium, and the comb tooth-shaped member may be bonded by the adhesive surface. The above-mentioned comb-shaped member, on the adhesive surface of the gasket,
It has a shape corresponding to the shape above or below the folded both ends of the filter medium (see FIG. 5). Therefore, the entire exposed portion of the adhesive surface of the gasket can be completely covered. Examples of the comb-shaped member include polypropylene resin,
A sheet of acrylic resin, ABS resin or the like processed into a comb shape is used.

Next, on the adhesive surface of the gasket,
A non-adhesive material is placed on the upper surface above the upper ends of both sides of the filter medium, the lower surface below the lower ends of the both sides of the above-mentioned folding, and the tip faces of both ends of the filter medium. Then, the non-adhesive material can be adhered or applied to the adhesive surface. The non-adhesive material may be disposed on the non-adhesive portion of the filter material, that is, on the entire exposed portion of the adhesive surface.

The non-adhesive material is obtained by applying a non-adhesive liquid in the form of a liquid or a slurry to the above-mentioned part of the adhesive surface, drying and curing. Alternatively, a sheet-shaped non-adhesive sheet may be attached to the above portion. Examples of the non-adhesive liquid include hot melt, room temperature curable, and thermosetting adhesives.
Examples of the non-adhesive sheet include a hot melt sheet, a heat sheet, and a self-sealing sheet.

By adhering the non-adhesive material to the adhesive surface, other members do not adhere to the air filter. Further, it is possible to solve the problem that the filter medium is easily peeled off due to the repulsive force of bending. Further, when the non-adhesive material is one using an adhesive or an adhesive sheet, the advantage of the adhesive surface that a certain degree of fixing force can be instantaneously obtained, and the filter material can be reliably fixed after curing The advantage of the adhesive can be effectively utilized. In addition to this, if a non-adhesive deodorant having a deodorant attached thereto is used as the non-adhesive, it is possible to add a deodorizing function to the air filter of the present invention or improve the deodorizing ability. Examples of the deodorant include granular activated carbon and zeolite.

Next, a deodorizing filter material to which a deodorizing agent is attached may be superposed on at least one surface of the filtering material, and both ends of the deodorizing filter material may be adhered to the adhesive surface.
The deodorizing filter medium is superposed on the upper surface and / or the lower surface of the filter medium. Both side ends of the deodorizing filter medium are adhered to the adhesive surface of the gasket in the same manner as the filter medium. The deodorizing filter material is a filter material coated with or impregnated with a deodorant such as granular activated carbon or zeolite, or paper made from activated carbon fibers. The deodorizing filter medium is, for example, a filter medium folded in a zigzag shape. Further, it may be a flat filter medium.

[0018]

In the air filter of the present invention, the exposed portion of the adhesive surface of the gasket is covered with the support member. Therefore, even if the air filter comes into contact with other members, for example, the air filter, wrapping paper, wrapping bag, etc., it does not adhere to these members. Also, the support member is
Since the upper end and the lower end of the filter medium are fixed, the shape of the filter medium is maintained and the adhesiveness between the filter medium and the gasket is improved.

Therefore, during handling such as transportation, the gasket is not pulled by other members and peeled off. Moreover, since other members do not adhere to the adhesive surface, handling such as transportation is easy. As described above, according to the present invention, it is possible to provide an air filter in which the adhesive surfaces or other objects do not adhere to the adhesive surface and the adhesiveness between the filter medium and the gasket can be improved.

[0020]

【Example】

Example 1 An air filter of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the air filter 10 of this example includes an electret filter medium 1 folded in a zigzag shape, a gasket 2 disposed on both side ends 15 and 16 of the filter medium 1 that are folded, The gasket 2 comprises an adhesive surface 20 provided on the surface of the gasket 2 facing the filter medium 1. The adhesive surface 20
The both side ends 15 and 16 of the filter material 1 are adhered to each other.

As shown in FIG. 2, in the adhesive surface 20 of the gasket 2, an upper surface 21 above the upper end 11 of the filter medium 1 and a lower surface 22 below the lower end 12 of the filter medium 1.
The support members 31 and 32 are disposed in the. The supporting members 31 and 32 are adhered to the upper surface 21 and the lower surface 22 of the adhesive surface 20, respectively. The upper and lower surfaces of the support members 31 and 32 are higher than the upper surface of the gasket 2 or lower than the lower surface. Therefore, the support members 31, 32
Are slightly projected above and below the gasket (Fig. 2).

The gasket 2 comprises a base material such as urethane foam and an adhesive applied to the surface facing the filter medium. On the adhesive surface 20 coated with this adhesive,
Utilizing the adhesive force, both side ends 15 of the filter medium 1 which are folded,
16 is glued. On the adhesive surface 20, the filter medium 1
The adhesive surface 20 is exposed at the portion where is not adhered. The support members 31 and 32 are made of a hot melt material that is fused by heating and are bonded to the upper surface and the lower surface of the filter medium. An acrylic adhesive is used as the adhesive.

The air filter 10 is used in a filter device 9 as shown in FIG. That is, the air filter 10 is built in the casing 91 provided with the intake grill 92 and the blower grill 93. A blower fan 96 for sucking and blowing air is arranged in the casing 91. The blower fan 96 is driven by a motor 94 and rotates about a rotation shaft 95. The air filter 10 and the motor 94 are fixed to the fixing portions 901 and 904 of the casing 91, respectively.

In the filter device 9, the blower fan 96 sucks the contaminated air 81 from the suction grill 92. At this time, dust in the air is filtered on the surface of the filter medium 1. Purified air 82 that has been purified by passing through the filter medium 1
Is blown indoors from the ventilation grill 93.

Next, the function and effect of this example will be described.
In the air filter 10 of this example, as shown in FIG. 1, the exposed portion of the adhesive surface 20 of the gasket 2 is provided with a support member 31,
It is covered with 32. Further, as shown in FIG. 2, the upper and lower surfaces of the supporting members 31, 32 for the gasket 2 are higher than the upper surface of the gasket 2 or lower than the lower surface. The upper and lower parts of the adhesive surface 20 of the gasket 2 are completely covered. Therefore, even if the air filter 10 comes into contact with another member, it does not adhere to the member.

Further, since the support members 31 and 32 fix the upper end 11 and the lower end 12 of the filter medium 1 on both sides, respectively.
While maintaining the shape of the filter medium 1, the filter medium 1 and the gasket 2
Improves adhesion with. Therefore, during handling during transportation, the gasket 2 will not be peeled off by being pulled by other members. Moreover, since other members do not adhere to the adhesive surface 20, handling such as transportation is easy.

Embodiment 2 As shown in FIG. 4, the air filter 10 of the present embodiment is such that, as shown in FIG.
Tip support members 43 and 44 are arranged on the tip surface of the tip of the tip 14. The tip support members 43 and 44 are adhered to both folded tip surfaces of the filter medium 1. The tip support member 4
Reference numerals 3 and 44 fix the folded both ends 13 and 14 of the filter medium 1 and the adhesive surface 20 of the gasket 2.

The tip end supporting members 43 and 44 are made of a hot melt material which is fused by heating. The folding both ends 13, 14 of the filter medium 1 are both ends in the folding direction of the filter medium 1, that is, both ends in the zigzag direction. Others are the same as in the first embodiment.

In this example, the tip support member 43,
44 fixes both folding tips 13 and 14 of the filter medium 1.
Therefore, both folding tips 13, 14 suppress the repulsive force against bending of the filter medium 1, and cover the exposed portion of the tip of the adhesive surface 20 rather than the folding tips 13, 14 of the filter medium 1. Other than that, the same effects as those of the first embodiment can be obtained.

Embodiment 3 In the air filter 10 of this embodiment, as shown in FIG. 5, the adhesive surface provided on the surface of the gasket 2 facing the filter medium 1 is provided with comb-shaped members on the adhesive surface from above and below the filter medium 1. 51 and 52 are arranged. The comb-shaped members 51, 52
Are adhered by the adhesive force of the adhesive surface.

The comb-tooth-shaped members 51 and 52 are made of a resin material such as polypropylene resin by folding both side ends 15 and 16 of the filter medium 1.
It is processed into a shape corresponding to the shape of. The comb-shaped member 51 has a concave portion 511 that contacts the upper end 11 of the filter medium 1.
And a convex portion 512 that contacts the lower end 12 of the filter medium 1. Further, the comb-shaped member 52 is provided on the upper end 11 of the filter medium 1.
It has a convex portion 521 that abuts with the concave portion 522 that abuts the lower end 12 of the filter medium 1. Folding both ends 1 of the filter medium 1
5, 16 are sandwiched by a comb-tooth-shaped member 51 at the top and a comb-tooth-shaped member 52 at the bottom. Others,
This is the same as in the first embodiment.

In the air filter of this embodiment, the comb-teeth members 51 and 52 have a shape corresponding to the shape of the folded side ends 15 and 16 of the filter medium 1. Therefore, the entire non-adhesive portion of the filter medium 1 on the adhesive surface of the gasket 2 can be completely covered. Therefore, there is no problem that other members adhere to the air filter. In addition, the folded side ends 1 of the filter medium 1
Since the whole parts 5 and 16 are sandwiched, the deformation of the shape can be prevented. Other than that, the same effects as those of the first embodiment can be obtained.

Embodiment 4 The air filter 10 of this embodiment is, as shown in FIGS. 6 and 7,
The upper end 11 of the filter medium 1 on the adhesive surface 20 of the gasket 2
The non-adhesive material 6 is adhered to the upper surface 21 above the lower surface 22, the lower surface 22 below the lower end 12 of the filter medium 1, and the front end surfaces 23 and 24 of the filter media 1 beyond the folding tips 13 and 14. Or it is applied. The non-adhesive material 6 is obtained by applying a slurry adhesive to the above-mentioned part of the adhesive surface, drying and curing. Hot melt is used as the adhesive.
Others are the same as in the first embodiment.

In this example, instead of the support member used in Example 1, the exposed portion of the non-adhesive material 6 is adhered or applied. Therefore, the non-adhesive material 6 prevents the other members from adhering to the air filter 10, like the support member. Further, the problem that the filter medium 1 is peeled off due to the repulsive force of bending does not occur. Furthermore, according to this example, a certain degree of fixing force can be obtained instantaneously. Moreover, the filter medium can be reliably fixed by curing the adhesive.

Embodiment 5 The air filter 10 of this embodiment is, as shown in FIGS. 8 and 9,
On the lower surface of the filter medium 1, a deodorant filter medium 7 to which a deodorant is attached is superposed. Both side ends 75 of the deodorizing filter material 7 are adhered to the adhesive surface 20 of the gasket 2. Above gasket 2
An acrylic pressure-sensitive adhesive 200 is applied to the entire surface of the filter 2 facing the filter medium 1 to form a pressure-sensitive adhesive surface 20.

The deodorizing filter material 7 is obtained by adhering a deodorizing agent such as granular activated carbon or zeolite to the filter material. The deodorizing filter medium 1 is formed by alternately stacking a filter medium folded in a zigzag pattern and a flat filter medium. The support member 31 used in the first embodiment is bonded to the upper surface 21 of the adhesive surface 20 of the gasket 2 above the upper end 11 of the filter medium 1. Others are the same as in the first embodiment.

In this example, a deodorizing filter material 7 for deodorizing is superposed on the lower surface of the filter material 1. Therefore, when the air passes through the air filter 10, dust is first removed by the filter medium 1 and then odorous components are adsorbed by the deodorizing filter medium 7 to become odorless clean air. Therefore, according to the air filter 10 of this example, not only dust in the air can be removed but also odorous components can be adsorbed. Further, as shown in FIG. 8, by making the deodorizing filter material 7 into a honeycomb shape,
It can greatly contribute to the reduction of ventilation resistance.

[Brief description of drawings]

FIG. 1 is a perspective view of an air filter according to a first embodiment.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional view of a filter device including the air filter according to the first embodiment.

FIG. 4 is a perspective view of an air filter according to a second embodiment.

FIG. 5 is an exploded perspective view of an air filter according to a third embodiment.

FIG. 6 is a perspective view of an air filter according to a fourth embodiment.

FIG. 7 is an explanatory view of a portion in Example 4 where a non-adhesive material is applied to an adhesive surface of a gasket.

FIG. 8 is a perspective view of an air filter according to a fifth embodiment.

9 is a sectional view taken along the line BB of FIG.

FIG. 10 is a perspective view of a conventional air filter.

11 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1. ． ． Filter media, 10. ． ． Air filter, 11. ． ． Upper end, 12. ． ． Bottom edge, 13, 14. ． ． Folding tips, 15, 16. ． ． Both sides of the fold, 2. ． ． Gasket, 20. ． ． Adhesive surface, 21. ． ． Upper surface, 22. ． ． Lower surface, 23, 24. ． ． Tip surface, 31, 32. ． ． Support member, 43, 44. ． ． Tip support member, 51, 52. ． ． Comb-shaped member, 6. ． ． Non-adhesive material, 7. ． ． Deodorizing filter medium, 9. ． ． Filter device,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiro Takahara 1-1-1, Showa-cho, Kariya city, Aichi prefecture Nihon Denso Co., Ltd.

Claims (6)

[Claims] 1. A filter medium folded in a zigzag shape, gaskets arranged on both sides of the filter medium in a folded state, an adhesive surface provided on a surface of the gasket facing the filter medium, and a shape of the filter medium. An air filter comprising a supporting member for supporting, wherein the folded both ends of the filter medium are adhered to each other by the adhesive surface, the upper surface being higher than the upper ends of the folded both ends of the filter medium on the adhesive face of the gasket. And an air filter in which the support member is disposed on a lower surface below the lower ends of both side ends of the folding or near the upper surface and the lower surface. 2. The tip supporting member according to claim 1, wherein a tip end supporting member is provided on the tip end surface of the tip of the adhesive surface of the gasket rather than the both ends of the folding of the filter medium, or in the vicinity of the tip end surface. And an air filter. 3. A pressure-sensitive adhesive surface comprising: a filter medium folded in a zigzag shape, gaskets arranged at both ends of the filter medium folded, and an adhesive surface provided on a surface of the gasket facing the filter medium. In the air filter formed by adhering the folded both ends of the filter medium by means of the above, a comb tooth-shaped member is arranged on the adhesive surface of the gasket in the vertical direction of the filter medium, and the comb tooth-shaped member is formed by the adhesive surface. An air filter in which members are adhered. 4. A filter medium folded in a zigzag shape, gaskets disposed on both sides of the filter medium in a folded state, and an adhesive surface provided on a surface of the gasket facing the filter medium. In the air filter formed by adhering the folded both side ends of the filter medium by the above, in the adhesive surface of the gasket, the upper surface above the upper ends of the folded both side ends of the filter medium,
An air filter, wherein a non-adhesive material is provided on a lower surface below the lower ends of both ends of the folding and a tip surface of the tip of the filter material on both ends of the folding. 5. The air filter according to claim 4, wherein the non-adhesive material is a non-adhesive deodorant material to which a deodorant is attached. 6. The deodorizing filter material having a deodorant attached to at least one surface thereof according to claim 1, wherein both sides of the deodorizing filter material are adhered to the adhesive surface. And an air filter.