JPH0527442B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter body for an indoor air cleaner,
In particular, the present invention relates to a filter for an indoor air cleaner that is suitable for installing inside a car or the like to remove fine suspended dust and the like.

[Conventional technology]

Conventionally, filter bodies for indoor air purifiers have been made by pouring adhesive onto the inside of a metal or wooden frame, then embedding a filter medium and a metal core tube with many holes in the frame and allowing it to harden. It is known that the entire periphery of a pleated filter medium is embedded in a frame made of, for example, a foamed resin.

Furthermore, as disclosed in Japanese Utility Model Publication No. 58-35302, there is known a structure in which a folded filter medium is engaged from above and below with an uneven frame. The pleated filter medium is used because it can be compact and secure a sufficient filtration area, especially when it is necessary to make it compact, such as in an indoor air purifier for an automobile.

[Problem to be solved by the invention]

Among the above-mentioned conventional techniques, the method of embedding the filter medium in the frame via an adhesive requires a long heating process for curing the adhesive and a process of dividing the pleat intervals into equal parts, resulting in high costs.

In addition, there is a high rate of appearance defects due to uneven wall thickness after the adhesive hardens.

Furthermore, there is no way to fix the embedded filter media until the adhesive hardens, so if you do not notice that the filter media has been displaced during work, it will remain fixed in place, resulting in the folds of the filter media being in close contact with each other. If it is fixed at , it will lead to a decrease in the filtration area.

Furthermore, since the filter medium is glued to the frame, it is not possible to replace the filter alone, and the frame and filter must be replaced together, making it expensive to replace parts at the end of their service life.

Furthermore, the method of embedding the periphery of the filter medium in a frame made of foamed resin also takes time and leads to high costs.

Furthermore, as in the above publication, when a pleated filter medium is locked from above and below with a frame having concave and convex portions, a large number of concave and convex portions are inserted into the pleats of the pleated filter medium for positioning. The process takes time and costs are high.

Furthermore, this type of indoor air purifier does not take into consideration the case where a combination of a filter medium and a deodorizing material are installed. In particular, in the case of indoor air purifiers for automobiles, when a deodorizing material is incorporated in addition to the filter material, it is desirable to have a simple structure that makes it easy to replace these components. Ideally, the filter material and deodorizing material should be easily installed through the upper opening, but if the deodorizing material shakes up and down due to vibrations from the car, it will hit the filter material and crush the folds of the filter material, impeding the filtration action. Is required.

The present invention has been made in view of the above points, and
The purpose of this is to simplify the structure of the filter and make it possible to replace these parts using a simple method, even when this type of filter is equipped with a deodorizing material in addition to a pleated filter. I can,
It is an object of the present invention to provide a filter body for an indoor air purifier that realizes shortening of assembly and replacement work time and cost reduction, and has excellent vibration resistance.

[Means to solve the problem]

In order to achieve the above object, the present invention basically proposes the following problem-solving means. Hereinafter, in order to facilitate understanding of the contents, the explanation will be made by referring to the reference numerals of the embodiment shown in FIG.

That is, in the present invention, a housing for an air purifier filter is configured by a lower frame 6 and an upper frame 2 detachably attached to the lower frame, and the lower frame 6 has a crosspiece at its bottom. 6D was erected,
An opening for introducing the filter medium 3 and deodorizing material 5 into the interior of the lower frame body is formed in the upper part, and a protrusion for holding the filter medium that is kept at a higher position than the crosspiece 6D is formed on two opposing inner wall surfaces of the lower frame body 6. The strips 6E are arranged in parallel, and the storage space for the filter medium 3 is secured in the upper space of the lower frame 6 and the storage space for the deodorizing material 5 is secured in the lower space with the protruding strips 6E as boundaries. , folded into an accordion shape,
The side plates 3B provided at both ends in the folding direction are removably locked to the inner wall of the lower frame 6, and the filter medium 3 maintains a substantially equal fold interval when the filter medium 3 is opened on its top surface. A strip member 3C for filtering is adhered, and the filter medium 3 is stored in the filter medium storage space of the lower frame 6 in an open state while being held between the upper frame 2 and the protruding strips 6E, and the deodorizing material 5 is attached to the periphery of the filter medium 3. By utilizing the elastic deformation of the reinforcing frame 4 provided in the frame 4, it is housed in the filter medium storage space through the protrusions 6E, and is removably fixed by being pressed by the protrusions 6E and the crosspieces 6D.

[Effect]

With such a configuration, when the filter medium 2 and the deodorizing material 5 are assembled into the lower frame 6, these members are introduced through a common opening (the upper opening of the lower member 6) and the lower frame 6 is assembled. Can be installed internally.

In this case, the deodorizing material 5 is passed through the protruding strip 6E provided on the inner wall of the lower frame 6 by utilizing the bending elasticity of the reinforcing frame 4, and is mounted on the crosspiece 6D at the bottom of the lower frame 6, and after being mounted, it is returned to its original state. The convex portion 6E and the crosspiece 6D elastically return to the state of
It is pressed and fixed from above and below.

Furthermore, the filter medium 3 is held on the convex portion 6E and incorporated into the storage space by the belt-shaped member 3C, with the pleats being evenly spaced. It is only necessary to lock the side plate 3B to the locking portion 6B provided on the inner wall surface of the lower frame body 6. Therefore, the filter medium can be fixedly set inside the lower frame 6 with one touch without using adhesive or embedding means as in the conventional case.

Furthermore, when the filter medium 3 is set in the lower frame 6,
Since the upper frame 2 attached to the upper part of the lower frame 6 functions as a retainer, the filter medium can be held stably.

The assembly of the filter medium 3 and the deodorizing material 5 and the attachment of the upper frame body 2 can all be done removably, making it easy to assemble the filter medium and making it possible to replace the filter medium 3 and the deodorizing material 5 individually. do.

Further, as described above, the deodorizing material 5 has the convex stripes 6
Since it is pressed and fixed from above and below by E and crosspiece 6D, it will not rattle even in harsh indoor environments with vibrations such as in automobiles, and contact with the filter medium 3 is prevented, allowing the folds of the filter medium 3 to be High dust collection efficiency of the filter medium 3 can be maintained without crushing, and furthermore, a simple structure can be achieved in which the deodorizing material 5 and the filter medium 3 can be attached from the upper opening of the filter body.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Fig. 2 is a perspective view of the filter medium used in the above embodiment when it is opened, Fig. 3 is a perspective view of the filter medium when it is closed, and Fig. 4 is a perspective view of the filter medium of the above embodiment after it is assembled. FIG. 5 and FIG. 6 are internal explanatory diagrams of the filter body.

As shown in FIGS. 1A to 1D, the elements of the filter 1 can be roughly divided into an upper frame 2, a filter medium 3, a deodorizing material 5,
It is composed of a lower frame body 6 and the like.

The upper frame 2 is made of synthetic resin, and has a pair of protrusions 2A facing each other on the left and right inner edges of the upper part, and small protrusions 2B on the left and right outer edges corresponding to the positions of the protrusions 2A. Ru. The small protrusion 2B engages with a notch 6C provided on the upper side surface of the lower frame 6 when the upper frame 2 is fitted onto the upper part of the lower frame 6, and serves as a locking mechanism for attachment. This lock can be released by pressing the protrusion 2A from above.

The filter medium 3 is made by folding nonwoven fabric or filter paper into an accordion shape, and on both sides of the folding direction,
A side plate 3B having a handle 3A is fixedly provided.

On the top surface of each pleat of the filter medium 3, a band-like member 3C is glued in the direction of the pleats in order to keep the pleat intervals even when the filter medium 3 is opened, and both ends of the band-like member 3C are It is fixed at both ends in the pleating direction.

With the above structure, the filter medium 3 can be expanded and contracted as shown in FIGS. When you pull it open, the folds will be spaced almost evenly.

An elastic reinforcing frame 4 is adhesively fixed around the deodorizing material 5.

The lower frame 6 is a box shaped like the upper frame 2, made of synthetic resin, and has a plurality of crosspieces 6D installed at the bottom.
A handle 6A is provided on the front. The crosspiece 6D functions to hold the deodorizing material 5.

A pocket 6B with an open top is integrally formed on the inner surface of the lower frame 6 in the front-rear direction. Filter medium 3
is arranged in an open state through the upper opening inside the lower frame body 6, and the orientation of the arrangement is such that the folding direction of the filter medium 3 and the front-rear direction of the frame body coincide with each other. Then, the side plates 3B disposed at both ends in the folding direction are inserted and locked into the grooves of the opposing pockets 6B.

The left and right frame plates of the lower frame body 6 are provided with the above-mentioned notches 6C facing each other at the top, and a sealing material made of felt or sponge material is adhered to the lower inner wall surfaces of the left and right frame plates.

On two opposing surfaces of the lower inner wall of the lower frame 6, protruding strips 6E for holding filter media are arranged in parallel. This protruding strip 6E is located at a higher position than the crosspiece 6D, and with this protruding strip 6E as a boundary, there is a storage space for the filter medium 3 in the upper space of the lower frame 6, and a storage space for the deodorizing material 5 in the lower space. Secured.

When assembling such elements, it is done as follows.

First, the deodorizing material 5 is passed through the upper opening of the lower frame 6.
will be introduced. In this case, the deodorizing material 5 passes between the protrusions 6E by utilizing the bending elasticity of the reinforcing frame 4, and is set on the crosspiece 6D, and in the set state, as shown in FIGS. 5 and 6, It is held down by the protruding portion 6E and the crosspiece 6D and is removably fixed.

Thereafter, the filter medium 3 folded as shown in FIG. 3 is unfolded using the handle 3A as shown in FIG.
In this state, the frame 6 is inserted through the upper opening of the lower frame 6.
At this time, insert the side plate 3B into the pocket 6B as shown in FIG. Through this process, the filter medium 3
is set in the lower frame 6 with one touch in an open state with equal pleat intervals. Also, side plate 3B
When it is inserted into the pocket 6B and fixed, the left and right side portions of the filter medium 3 come into pressure contact with the sealing material 7 stuck to the inner wall of the lower frame 6, and the fixation of the filter medium 3 is strengthened.

Therefore, the function of the filter body can be obtained at the above point, but after that, in order to stabilize the retention, the upper frame body 2 is covered, and the small projections 2B of the upper frame body 2 are attached to the lower frame body 6.
Engage with the notch 6C to secure it. By covering the periphery of the filter medium 3, the upper frame body 2 prevents the filter medium 3 from coming off. Further, the filter medium 3 is held between the upper frame body 2 and the protruding stripes 6E, and is prevented from shaking.

In the filter body 1 assembled in this way,
By operating the protrusion 2A in the opposite manner to the above process, the lock between the protrusion 2B and the notch 6C is released, and the upper frame 2 is removed from the lower frame 6.
These parts can be easily removed and replaced.

According to this embodiment, the following effects are achieved.

B When assembling the filter medium 3 into the lower frame 6, attach the side plate 3B to the pocket 6B without using adhesive.
By inserting the filter into the lower frame 6, the filter medium 3 can be fixedly set on the lower frame 6 with one touch.

(b) The upper frame 2 placed over the lower frame 6 prevents the filter medium 3 from being wiped, thereby preventing the filter medium from falling off in the unlikely event that it is held and stably holding the filter medium.

C. Since the above assembly process can be easily performed,
The ease of assembling the entire filter body 1 can be improved.

D. The filter medium 3 and the deodorizing material 5 can be replaced individually, making the filter body easy to use.

(e) By using the belt-shaped member 3C, the folds of the filter medium 3 are evenly spread and maintained during use, so that the dust collection effect can be maximized and the performance can be improved.

Furthermore, since the pleats can be kept at equal intervals with just one touch, the assembly work efficiency is further improved, and even inexperienced persons can easily install the product.

Moreover, cost reduction and the incidence of defective products can be extremely reduced.

F. Since the sealing material 7 is provided on the inner wall surface of the lower frame 6 and pressed against the side surface of the filter material 3, air leakage can be eliminated and the dust collection effect can be enhanced.

G. It can exhibit a deodorizing effect in addition to air purification, and as described above, the deodorizing material 5 has a convex strip 6E.
Since it is pressed and fixed from above and below by the crosspiece 6D, it does not wobble even in harsh indoor environments with vibrations such as in automobiles, and contact with the filter medium 3 is prevented, thereby crushing the folds of the filter medium 3. This does not occur, and the high dust collection efficiency of the filter medium 3 can be maintained. In the above embodiment, the filter medium 3 is inserted and locked into the pocket 6B of the lower frame 6, but the locking means of the present invention is not limited to this, and may be used instead of the pocket, for example. An L-shaped metal fitting may be used, and in addition, the side plate 3B
A similar effect can be obtained even if a magnetic locking method is adopted in which the locking member is a magnet (or a magnetic member) and the locking means on the inner wall of the lower frame is a magnetic member (or a magnet).

〔Effect of the invention〕

As described above, according to the invention, even when a combination of deodorizing material in addition to a pleated filter medium is installed on this type of filter body, these parts can be installed in a simple filter structure and replaceable using a simple method. This reduces assembly and replacement work time and costs, and also eliminates situations where the deodorizing material and filter material come into contact with each other due to vibration, even when installed in a car. It is possible to provide a filter body for an indoor air cleaner that maintains soundness and has excellent vibration resistance.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Fig. 2 is a perspective view of the filter medium used in the above embodiment when it is opened, Fig. 3 is a perspective view of the filter medium when it is closed, and Fig. 4 is a perspective view of the filter body of the above embodiment after it is assembled. , FIG. 5, and FIG. 6 are internal explanatory diagrams of the filter body. 1... Filter body, 2... Upper frame body, 3... Filter medium,
3B... Side plate, 4... Reinforcement frame, 5... Deodorizing material, 6
... lower frame body, 6B ... locking means (pocket),
6C...notch, 6D...crosspiece, 6E...projection,
7...Sealing material.

Claims (1)

[Scope of Claims] 1. A housing of an air purifier filter is constituted by a lower frame 6 and an upper frame 2 detachably attached to the lower frame, and the lower frame 6 has a bottom portion thereof. A crosspiece 6D is installed at the top, and an opening for introducing the filter medium 3 and deodorizing material 5 into the lower frame body is formed in the upper part. Convex strips 6E for holding the filter medium to maintain a high position are arranged in parallel, and with this convex strip 6E as a boundary, the storage space for the filter medium 3 is provided in the upper space of the lower frame 6, and the deodorizing space is provided in the lower space. A storage space for the filter material 5 is secured, and the filter material 3 is folded in an accordion shape, and the side plates 3B provided at both ends in the folding direction are removably locked to the inner wall of the lower frame 6. The filter medium 3 has a band-like member 3C adhered to its top surface to keep the folding interval of the filter medium 3 substantially uniform, and when the filter medium 3 is open, the upper frame 2 is placed in the filter medium storage space of the lower frame 6. and the convex portion 6E, and the deodorizing material 5 is stored in the filter medium storage space by passing between the convex portions 6E by utilizing the elastic deformation of the reinforcing frame 4 provided on the periphery thereof. The filter body for an indoor air purifier is characterized in that it is held down and removably fixed by the protrusions 6E and the crosspieces 6D. 2. The filter body for an indoor air cleaner according to claim 1, wherein the side plate 3B is inserted and locked into a pocket 6B integrally formed on the inner wall surface of the lower frame body 6. 3. In claim 1 or 2, the lower frame body 6 has a sealing material 7 affixed to the inner wall surface thereof at a position facing the folded side surface of the filter medium 3, and this sealing material 7. A filter body for an indoor air purifier in which the pleated side portions of the filter medium 3 are in pressure contact with the filter body 7.