JP2009262830A - Air filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air filter capable of improving the working efficiency of replacement of filters. <P>SOLUTION: This air filter 1 is used for a vehicle air conditioning device. It includes a pleated filter medium 2 inserted in a case 3 forming a passage of a blowing air, a constraining section 11 for insertion capable of constraining the pleated end 2a of the filter medium on the insertion side to the case in a narrowing manner, and a constricting mechanism 10 for insertion with an insertion operating section 12 for performing switching between constraint and unconstraint of the pleated end by the constraining section. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air filter, and more particularly to an air filter that can improve the workability of filter replacement.

2. Description of the Related Art Conventionally, as an air filter used in a vehicle air conditioner, an air filter that is installed on a vehicle body side and is inserted into and removed from a case that forms a passage for blown air is known (for example, see Patent Documents 1 and 2). .
Patent Documents 1 and 2 disclose an air filter in which a fold-folded filter medium part is supported by a frame member.
Further, as another conventional air filter, for example, as shown in FIG. 10, an air filter 101 (also referred to as an “end plate-less air filter”) made of only a fold-shaped filter medium 102 without using a frame member. It has been known.

JP 2005-14704 A JP-A-9-290630

By the way, the case may be installed in the back of the glove box or in the bottom of the dashboard. In this case, when replacing the filter, it is necessary to insert and remove the air filter with respect to the case through a relatively narrow space, and the replacement work takes time. Also, the operator's hand may become dirty or damaged.
In particular, in the case of the air filter 101, when the air filter 101 is inserted into the case 103, the fold end portions 102 a and 102 b of the filter medium 102 expand, and the lateral width A becomes larger than the lateral width B of the insertion port 103 a of the case 103. It was extremely difficult to insert.

  This invention is made | formed in view of the said present condition, and aims at providing the air filter which can improve workability | operativity of filter replacement | exchange.

The present invention is as follows.
1. An air filter used in a vehicle air conditioner,
A fold-like filter medium inserted into a case that forms a passage for the blown air;
Insertion restraint part that can restrain the fold folding end part on the insertion side of the filter medium to the case to be narrowed, and insertion for switching between restraint and non-restraint of the fold folding end part by the insertion restraint part An air filter comprising: an insertion constriction mechanism having an operation part for operation.
2. A take-out restraining portion that can be restrained so as to constrict a fold folding end portion of the filter medium opposite to the case into the case, and for switching between restraining and non-constraining of the fold folding end portion by the take-out restraining portion. The above-described 1. further comprising an extraction constriction mechanism having an extraction operation unit. The air filter described.
3. The insertion stenosis mechanism further includes an insertion display unit that is provided in the insertion operation unit and displays that the insertion operation unit is for insertion. The extraction stenosis mechanism includes the extraction stenosis mechanism. 2. The above-mentioned 2. which further has an extraction display part which is provided in the operation part and displays that the operation part for extraction is for extraction. The air filter described.
4). The insertion restricting portion is formed in a string shape having a length shorter than a lateral width (W) of the fold-fold end portion in an unconstrained state, and an insertion hole formed in the fold of the fold-fold end portion Further, both end portions thereof are temporarily fixed to the folds on the outer end side of the fold end portion, the insertion operation portion is formed in a string shape, and one end portion thereof is The above 1. connected to the central portion in the longitudinal direction of the insertion restraint. The air filter described.
5. The take-out restraining portion is formed in a string shape having the same length as the lateral width (W) of the fold-fold end portion in an unconstrained state, and the insertion hole formed in the fold of the fold-fold end portion Further, both end portions thereof are attached to folds on the outer end side of the fold end portion, the take-out operation portion is formed in a string shape, and one end portion thereof is taken out of the take-out portion. 2. connected to the central portion in the longitudinal direction of the restraining portion for use. The air filter described.

According to the air filter of the present invention, when the filter is replaced, the insertion restraint portion is restrained so that the fold end portion on the insertion side of the filter medium is narrowed, and the restrained air filter is inserted into the case. Then, the operation of the insertion operation unit releases the restriction of the fold-fold end portion by the insertion restriction portion, and the fold-fold end portion is widened in the case. As described above, the insertion squeezing mechanism can squeeze the fold end of the filter medium on the insertion side, so that the air filter can be quickly and easily attached to the case, and the operator's hand becomes dirty or damaged. Can be suppressed. Furthermore, even when the case is installed in the back of other components, the air filter can be smoothly attached to the case through a relatively narrow space. As a result, it is possible to improve the air filter mounting workability, and hence the filter replacement workability.
Further, in the case of further including an extraction narrowing mechanism, when the filter is replaced, the fold folding end portion on the side opposite to the insertion side of the filter medium is restricted by the extraction restricting portion by the operation of the extracting operation portion, and the restriction state The air filter is removed from the case. As described above, since the fold end of the filter material on the side opposite to the insertion side can be narrowed by the narrowing mechanism for removal, the air filter can be quickly and easily removed from the case, and the operator's hand can become dirty. Injury can be suppressed. Furthermore, even when the case is installed in the back of other components, the air filter can be smoothly taken out from the case through a relatively narrow space. As a result, the workability of taking out the air filter and the workability of exchanging the filter can be improved.
When the insertion stenosis mechanism further includes an insertion display unit, and the extraction stenosis mechanism further includes an extraction display unit, the insertion display unit and the extraction display unit An operator can more reliably identify the operation unit for insertion and the operation unit for removal, and can prevent erroneous operation.
Further, the insertion restraining portion is formed in a string shape having a length shorter than the lateral width (W) of the fold-fold end portion in an unconstrained state, and is formed in the fold of the fold-fold end portion. It is inserted into the insertion hole, and both end portions thereof are temporarily fixed to the folds on the outer end side of the fold end portion, and the operation portion for insertion is formed in a string shape, and one end portion thereof Is connected to the central portion in the longitudinal direction of the insertion restraining portion, the longitudinal central portion of the insertion restraining portion is pulled toward the non-insertion side by the pulling operation of the insertion operating portion. At the same time, both end portions of the insertion restraining portion in the longitudinal direction are drawn toward the center through the insertion holes of the folds. As a result, both ends of the insertion restraint portion in the temporarily fixed state are separated from the outer side folds, and the fold-folded end portions are spread more smoothly and evenly in the case by its own elasticity. Therefore, it is possible to further improve the workability of attaching the air filter, and hence the work of exchanging the filter.
Further, the take-out restraining portion is formed in a string shape having the same length as the lateral width (W) of the fold-folded end portion in an unconstrained state, and is formed in the fold of the fold-folded end portion. It is inserted into the insertion hole, and both end portions thereof are attached to the folds on the outer end side of the fold end portion, the take-out operation portion is formed in a string shape, and one end portion thereof is When connected to the central portion in the longitudinal direction of the take-out restraining portion, the pulling operation of the take-out operation portion pulls the longitudinal central portion of the take-out restraining portion toward the non-insertion side. The both ends in the longitudinal direction of the take-out restraining portion are drawn toward the center through the insertion holes of the folds. Thereby, the folded fold end portion is more reliably and evenly narrowed by the take-out restraining portion. Therefore, the workability of taking out the air filter and the work of exchanging the filter can be further improved.

1. Air filter Embodiment 1 The air filter according to the above is an air filter used in a vehicle air conditioner, and includes a filter medium and an insertion constriction mechanism described below. The air filter can further include, for example, an extraction narrowing mechanism described later.

  The “filter medium” is not particularly limited in its structure, planar shape, material, and the like as long as it is a fold-like shape inserted into the case forming the passage of the blown air. Examples of the filter medium include non-woven fabric, woven fabric, and paper. Examples of the fiber material constituting the nonwoven fabric include one or a combination of two or more of rayon, polyester, polypropylene, polyethylene, acrylic, and the like.

  The “case” is not particularly limited in its structure, installation location, etc. as long as it constitutes a vehicle air conditioner. The case includes, for example, a box-shaped case main body in which an insertion port for a filter medium is formed, and a lid body that is slidably supported on a side edge of the insertion port of the case main body and opens and closes the insertion port. be able to. It is preferable that an elastic sealing material is laid on the inner surface of the bottom wall of the case body and the back surface of the lid. This is because the airtightness of the fold-fold end portions on the insertion side and the non-insertion side of the filter medium can be improved.

The “insertion constriction mechanism” includes an insertion restraint portion that can be restrained so as to constrict a fold end portion on the insertion side of the filter medium into the case, and restraining and non-restriction of the fold end portion by the insertion restraint portion. The structure, constriction form, timing and the like are not particularly limited as long as the insertion operation unit for switching the constraint is provided.
Examples of the shape of the insertion restricting portion include a string shape (including a tape or a film shape), a bag shape, a frame shape, and an irregular shape.
The insertion operation unit is normally connected to the insertion restraint unit. Examples of the shape of the operation portion for insertion include a string shape (including a tape or a film shape), a rod shape, an irregular shape, and the like.

As the insertion narrowing mechanism, for example, the insertion restricting portion is formed in a string shape having a length shorter than the lateral width (W) of the unfolded fold folded end portion, and the fold folded end portion Inserted through an insertion hole formed in the pleat, and both end portions thereof are temporarily fixed to the folds on the outer end side of the fold folding end portion, and the operation portion for insertion is formed in a string shape, And the form etc. which the one end part is connected to the center part of the elongate direction of the said restraint part for insertion can be mentioned.
The length of the insertion restricting portion is preferably set to a value of 30 to 90% (especially 50 to 60%) of the lateral width (W) of the fold end portion in an unconstrained state. This is because the fold folded end can be narrowed to an appropriate size, and the fold folded end can be smoothly and evenly widened when the restraint is released.
The insertion holes are preferably formed in all the pleats of the fold folded end. This is because the fold folded end can be more smoothly spread when the restraint is released.
Examples of the temporary fixing form of the insertion restricting portion include thermal welding, adhesion (adhesion with an adhesive, tape, etc.), locking, and the like.
In addition, the above-mentioned “pleat on the outer end side of the fold folding end portion” is intended to include pleats in the vicinity of the inner side of the pleat at the outermost end in addition to the folds at the outermost end of the fold folding end portion.

The above-mentioned “restriction mechanism for extraction” includes an extraction restraint portion that can be restrained so as to constrict the fold folding end portion on the side opposite to the insertion of the filter medium into the case, and restraint of the fold folding end portion by the extraction restraint portion and As long as it has an extraction operation unit for switching between non-constraints, its structure, constriction form, timing, etc. are not particularly limited.
Examples of the shape of the take-out restraining portion include a string shape (including a tape or film shape), a bag shape, a frame shape, and an irregular shape.
The take-out operation section is normally connected to the take-out restraining section. Examples of the shape of the operation portion for taking out include a string shape (including a tape or film shape), a rod shape, an irregular shape, and the like.

As the extraction narrowing mechanism, for example, the extraction restricting portion is formed in a string shape having the same length as the lateral width (W) of the unfolded fold folded end portion, and the fold folded end portion Are inserted into insertion holes formed in the pleats, and further, both ends thereof are attached to the folds on the outer end side of the fold folding end part, the operation part for taking out is formed in a string shape, and The form etc. which the one end part is connected to the center part of the elongate direction of the restraint part for extraction can be mentioned.
The insertion holes are preferably formed in all the pleats of the fold folded end. This is because the folded fold end can be more reliably and evenly constricted when restrained.
Examples of the attachment form of the take-out restraining part include thermal welding, adhesion (adhesion with an adhesive, tape, etc.), locking, and the like.
The above “the same length as the lateral width (W) of the fold-fold end portion” is intended to be approximately the same length as the lateral width (W) of the fold-fold end portion. Further, the above-mentioned “folds on the outer end side of the fold folding end portion” is intended to include folds near the inner side of the folds at the outermost end in addition to the folds at the outermost end of the fold folding end portion.

Here, for example, when the air filter includes the insertion stenosis mechanism and the extraction stenosis mechanism, the insertion stenosis mechanism is provided in the insertion operation unit, and the insertion operation unit is for insertion. An insertion display section for displaying, and the extraction stenosis mechanism further includes an extraction display section that is provided in the extraction operation section and displays that the extraction operation section is for extraction. Can be.
Examples of the insertion display unit and the extraction display unit include (1) a form of a tag provided on one end side of the operation unit, and (2) a color, pattern, shape, and the like formed on the surface side of the operation unit. The form etc. which are 1 type or the combination of 2 or more types can be mentioned. Among these, from the viewpoint that the stenosis mechanism can have a simpler structure, the mode (1) is preferable.

2. Mounting method of air filter Embodiment 2 As a method for attaching the air filter according to the first embodiment, for example, the first embodiment described above. The air filter is attached to the case by inserting the air filter constrained so that the fold end of the insertion side of the filter medium is narrowed by the insertion restraining portion of the insertion narrowing mechanism, Examples include a feature in which the insertion operation portion of the insertion stenosis mechanism is operated to release the restriction of the folded fold end portion by the insertion restriction portion.

3. Method for taking out air filter Embodiment 3 As a method for taking out the air filter according to the first embodiment, for example, the first embodiment described above. The air filter is taken out, and the take-out operation portion of the take-out constriction mechanism is operated so that the fold end on the side opposite to the insertion side of the filter medium is restrained by the take-out restraint portion, and the restraint state The form etc. which take out this air filter from a case can be mentioned.

Hereinafter, the present invention will be specifically described with reference to the drawings.
(1) Configuration of Air Filter As shown in FIG. 1, the air filter 1 according to the present embodiment includes a filter material 2 made of nonwoven fabric and fold-folded, an insertion constriction mechanism 10 and an extraction constriction mechanism 20. The filter medium 2 is formed in a size that can be inserted and accommodated in a case 3 that is installed in the back of a glove box (not shown) and forms a passage for blown air. The case 3 includes a box-shaped case body 4 in which an insertion port 4a for the filter medium 2 is formed, and a lid that is slidably supported on a side edge of the insertion port 4a of the case body 4 and opens and closes the insertion port 4a. And a body 5. On the inner surface of the bottom wall of the case body 4 and the back surface of the lid body 5, flat seal members 6 and 6 made of sponge are laid. A vent hole (not shown) for blown air is formed on the upper and lower surfaces of the case body 4.

  The insertion narrowing mechanism 10 includes an insertion restraining portion 11 that can be restrained so as to constrict a fold folding end portion 2 a on the insertion side of the filter medium 2 into the case 3, and a fold folding end portion by the insertion restraining portion 11. It has the operation part 12 for insertion for switching restraint and non-restraint of 2a.

  The insertion restricting portion 11 is formed in a string shape having a length of about 50% of the lateral width W (see FIG. 2) of the fold end portion 2a in an unconstrained state. Further, as shown in FIG. 3, the insertion restraining portion 11 is inserted through an insertion hole 13 formed in the center portion of each fold end portion 2a in the height direction, and both end portions thereof are fold-folded. Temporarily fixed to each fold of the outermost end of the end portion 2a by a heat welding portion 14. Therefore, the pleat end portion 2a of the filter medium 2 is previously restrained by the insertion restraining portion 11. Further, the temporary fixing strength by the heat welding part 14 is set so that the both ends of the insertion restraining part 11 are removed by the pulling operation of the insertion operating part 12 because they are the outermost ends.

  As shown in FIG. 1, the insertion operation unit 12 is formed in a string shape, one end of which is connected to the center in the longitudinal direction of the insertion restraint 11, and the other end is a filter medium. 2 extends to the outside of the non-insertion side. On the other end side of the insertion operation unit 12, a tag 15 having a symbol “IN” indicating that the operation unit 12 is for insertion is described as an example (an “insertion display unit” according to the present invention). .) Is attached.

  The extraction narrowing mechanism 20 includes an extraction restricting portion 21 that can be constrained so as to constrict the fold folding end portion 2 b on the side opposite to the insertion of the filter medium 2 into the case 3, and a fold folding end by the extraction restricting portion 21. It has an extraction operation unit 22 for switching between restriction and non-restriction of the part 2b.

  The take-out restraining portion 21 is formed in a string shape having substantially the same length as the lateral width W (see FIG. 2) of the fold end portion 2b in an unconstrained state. As shown in FIG. 4, the take-out restraining portion 21 is inserted into an insertion hole 23 formed in the center portion of each fold-fold end portion 2b in the height direction, and both end portions thereof are fold-fold end portions. It is attached to each pleat at the outermost end of 2b by a heat welding portion 24. Therefore, the fold end portion 2b of the filter medium 2 is not previously restrained by the take-out restraining portion 21. Moreover, the attachment strength by the heat welding part 24 is set so that the both ends of the take-out restraining part 21 cannot be removed by the pulling operation of the take-out operating part 22 because it is the outermost end.

  As shown in FIG. 1, the take-out operation unit 22 is formed in a string shape, one end of which is connected to the center in the longitudinal direction of the take-out restraining unit 21, and the other end is a filter medium. 2 extends outward on the side opposite to the insertion side. On the other end side of the insertion operation unit 22, the tag 25 with the symbol “OUT” indicating that the operation unit 22 is for removal is described (illustrated as “removal display unit” according to the present invention). .) Is attached.

(2) Air Filter Replacement Operation Next, the replacement operation of the air filter 1 having the above configuration will be described.
First, when the air filter 1 is attached to the case 3, the fold end 2 a of the filter medium 2 is constrained by the insertion restraint 11, and the fold end 2 b of the filter medium 2 is constrained by the takeout restraint 21. An unfiltered air filter 1 (see FIG. 1) is prepared. Next, as shown in FIG. 5, the air filter 1 is inserted into the case 3 through a relatively narrow space in the glove box with the fold end 2 a of the filter medium 2 as the tip side.

  Next, as shown in FIG. 6, when the fold end portion 2 a of the filter medium 2 comes into contact with the sealing material 6 on the bottom wall of the case body 4, one end side of the insertion operation portion 12 with the tag 15 is placed on the anti-insertion side. Pull towards. Then, the central portion in the longitudinal direction of the insertion restraining portion 11 connected to the insertion operation portion 12 is pulled toward the non-insertion side, and both end portions in the longitudinal direction of the insertion restraining portion 11 are inserted through the pleats. 13 is drawn toward the center via 13. As a result, both ends of the insertion restraining portion 11 in the temporarily fixed state are detached from the outermost end of the fold folding end portion 2a, and the restraint of the fold folding end portion 2a by the insertion restraining portion 11 is released, and the inside of the case 3 is released. The folded fold end 2a of the filter medium 2 is spread by its own elasticity. Thereafter, the insertion operation portion 12 and the insertion restraint portion 11 connected to the insertion operation portion 12 are taken out of the case 3, and then the lid 5 is operated to close the insertion port 4 a of the case body 4. The folded end portions 2 a and 2 b are pressed against the sealing materials 6 and 6, and the air filter 1 is attached to the case 3.

  Next, when removing the air filter 1 from the case 3, as shown in FIG. 7, the lid 5 is operated to open the insertion port 4a of the case body 4, and the removal operation unit 22 with the tag 25 is opened. Pull one end toward the non-insertion side. Then, the central portion in the longitudinal direction of the take-out restraining portion 21 connected to the take-out operation portion 22 is pulled toward the non-insertion side, and both end portions in the longitudinal direction of the take-out restraining portion 21 are inserted through the pleats. It is drawn toward the center via 23. Thereby, the pleat end portion 2b of the filter medium 2 is restrained by the take-out restraining portion 21 so as to be narrowed. Then, the air filter 1 is taken out from the case 3 through a relatively narrow space with the fold-fold end portion 2b in the restrained state as the tip side.

(3) Effects of the Embodiment As described above, in the present embodiment, the filter medium 2 is provided with the insertion constriction mechanism 10, and when the filter is replaced, the insertion constriction mechanism 10 causes the fold-fold end portion 2 a on the insertion side of the filter medium 2 to be inserted. Since it is narrowed and attached to the case 3, the air filter 1 can be attached to the case 3 quickly and easily, and the operator's hand can be prevented from becoming dirty or damaged. Furthermore, even when the case 3 is installed behind other components, the air filter 1 can be attached to the case 3 through a relatively narrow space smoothly. As a result, it is possible to improve the workability of attaching the air filter 1 and thus the workability of replacing the filter.

  Further, in this embodiment, the filter medium 2 is provided with an extraction constriction mechanism 20, and when replacing the filter, the extraction medium constriction mechanism 20 constricts the fold end 2 b on the side opposite to the insertion side of the filter medium 2 and removes it from the case 3. Since it did in this way, the air filter 1 can be taken out from the case 3 quickly and easily, and it can suppress that a worker's hand gets dirty or damaged. Furthermore, even when the case 3 is installed in the back of other parts, the air filter 1 can be smoothly taken out from the case 3 through a relatively narrow space. As a result, it is possible to improve the workability of taking out the air filter 1 and the filter replacement workability.

  In the present embodiment, a tag 15 for indicating that it is for insertion is provided on one end side of the insertion operation unit 12, and a tag 25 for indicating that it is for extraction is provided on one end side of the extraction operation unit 22. Therefore, the both tags 15 and 25 allow the operator to more reliably identify the insertion operation unit 12 and the removal operation unit 22 and prevent these erroneous operations.

  Further, in the present embodiment, the insertion restricting portion 11 is formed in a string shape having a length shorter than the lateral width W of the unfolded fold-fold end portion 2a, and is formed on each fold of the fold-fold end portion 2a. The insertion hole 13 is inserted into the insertion hole 13, and both end portions thereof are temporarily fixed to the outermost folds of the fold folding end portion 2a, and the insertion operation portion 12 is formed in a string shape, and one end portion thereof Is connected to the central portion in the longitudinal direction of the insertion restraining portion 11, and the longitudinal central portion of the insertion restraining portion 11 is pulled toward the non-insertion side by the pulling operation of the insertion operating portion 12. Both end portions in the longitudinal direction of the insertion restraining portion 11 are drawn toward the center through the insertion holes 13 of the folds. Thereby, both ends of the insertion restraining portion 11 in the temporarily fixed state can be removed because they are the outermost folds, and the fold-fold end portion 2a can be spread more smoothly and evenly in the case 3 by its own elasticity. Therefore, it is possible to further improve the workability of attaching the air filter 1 and the workability of replacing the filter.

  Further, in this embodiment, the take-out restraining portion 21 is formed in a string shape having the same length as the lateral width W of the unfolded folded fold end portion 2b, and is formed in each fold of the fold folded end portion 2b. The both ends are attached to the outermost folds of the fold folded end 2b, the take-out operation part 22 is formed in a string shape, and one end thereof is taken out. Since it is connected to the central portion of the restraining portion 21 in the longitudinal direction, the pulling operation portion 22 pulls the central portion in the longitudinal direction of the restraining portion 21 for withdrawal toward the anti-insertion end side and Both ends in the longitudinal direction of the restraining portion 21 are drawn toward the center via the insertion holes 23 of the pleats. Thereby, the fold end portion 2b is more securely and evenly narrowed by the take-out restraining portion 21. Therefore, the workability of taking out the air filter 1 and the workability of replacing the filter can be further improved.

  Further, in this embodiment, since the sealing materials 6 and 6 are laid on the inner surface of the bottom wall of the case body 4 and the back surface of the lid body 5, the sealing materials 6 and 6 are provided in the air filter 1 accommodated in the case 3. Since it is press-contacted to both the fold folding end portions 2a and 2b of the filter medium 2, the airtightness of the fold folding end portions 2a and 2b can be improved. In the air filter 1 according to the present embodiment, it is difficult to attach the sealing material to the fold folded ends 2a and 2b while keeping the pleats in an appropriate posture.

  In the present invention, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. That is, in the above-described embodiment, the insertion restraint portion 11 is temporarily fixed to the pleat by the heat welding portion 14, but the present invention is not limited to this. For example, the insertion restraint portion 11 is pleated by an adhesive or an adhesive tape. You may make it temporarily fix. Alternatively, a tying portion larger than the insertion hole 13 may be formed at both ends of the string-like insertion restraining portion 11, and the insertion restraining portion 11 may be temporarily fixed to the pleat by the tying portion. Further, as shown in FIG. 8, when the tape-like insertion restraint portion 11 ′ is employed, a surface fastener made of a hook and a loop is provided between the insertion restraint portion 11 ′ and the pleats, and this surface fastener. Accordingly, the insertion restraint portion 11 ′ may be temporarily fixed to the pleat.

  Further, in the above-described embodiment, an example in which the insertion restricting portion 11 in the temporarily fixed state is removed by the operation of the insertion operation portion 12 and the restriction by the insertion restricting portion 11 is released is illustrated, but the present invention is not limited thereto. For example, as shown in FIG. 9, a part of the insertion restraint portion 11 (for example, a connection portion with the insertion operation portion 12) is set as a portion having lower rigidity than other portions, and the insertion operation portion 12 By operation, a part of the insertion restraint portion 11 may be destroyed and the restraint by the insertion restraint portion 11 may be released.

  In the above-described embodiment, the configuration in which the folded fold end portion 2a is previously restrained by the insertion restraining portion 11 is illustrated, but the present invention is not limited to this. For example, the insertion operation is performed in substantially the same manner as the extraction stenosis mechanism 20. The fold end portion 2 a may be restrained by the insertion restraining portion 11 by a pulling operation of the portion 12. In this case, it is preferable that the insertion operation unit 11 is pulled more strongly to remove the temporarily fixed insertion restriction unit 11 so as to release the restriction.

  Moreover, in the said Example, although the both ends of the insertion restraint part 11 were temporarily fixed to the outermost pleat of the fold folding edge part 2a, it is not limited to this, For example, of the restraint part 11 for insertion You may make it temporarily fix both ends to the inner side of the outermost pleat of the fold end part 2a (for example, the second or third pleat because it is the outermost pleat).

  Moreover, in the said Example, although the both ends of the extraction restraint part 21 were attached to the outermost end fold of the fold folding end part 2b, it is not limited to this, For example, both ends of the insertion restraint part 21 May be attached to a fold in the vicinity of the innermost pleat of the outermost fold of the fold end portion 2b (for example, the second or third fold because it is the outermost pleat).

  Moreover, in the said Example, although the restraint part 11 for insertion and the restraint part 21 for extraction inserted in the insertion holes 13 and 23 formed in each pleat of each fold end part 2a, 2b of the filter medium 2 were illustrated. However, the present invention is not limited to this, for example, as shown in FIG. 8, an insertion restraint portion 11 ′ and a take-out restraint portion 21 ′ that pass outside the pleat end portions 2a and 2b, or a fold end portion It is also possible to use an insertion restraint portion and an extraction restraint portion that are inserted through insertion holes formed in some of the pleats.

  Moreover, in the said Example, although the string-like operation part 11 for insertion and the operation part 21 for extraction were pulled, the form which switched restraint and non-restraint of the fold folding end parts 2a and 2b was illustrated, It is limited to this. Instead, for example, the rod-shaped insertion operation unit and the extraction operation unit may be pushed to switch between the restraint and the unconstraint of the folded fold end.

  Moreover, in the said Example, although the tags 15 and 25 which described the symbol as the display part for insertion and the display part for extraction were illustrated, it is not limited to this, For example, of the operation part 12 for insertion and the operation part 22 for extraction The surface color and the surface shape may be made different so that both can be identified.

  Furthermore, in the said Example, although the case 3 of horizontal installation was illustrated, it is not limited to this, For example, it is good also as a case of vertical installation or diagonal installation.

  It is widely used as a technique for filtering air blown from a vehicle air conditioner.

It is a perspective view of the air filter and case which concern on an Example. It is a perspective view of the filter medium in an unconstrained state. It is a principal part perspective view of the insertion side of an air filter. It is a principal part perspective view of the anti-insertion side of an air filter. It is explanatory drawing for demonstrating the attachment effect | action of an air filter. It is explanatory drawing for demonstrating the attachment effect | action of an air filter. It is explanatory drawing for demonstrating the taking-out effect | action of an air filter. It is a principal part perspective view for demonstrating the restraint part for insertion of another form. It is a principal part perspective view for demonstrating the constriction mechanism for insertion of another form. It is a perspective view of the conventional air filter and a case.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1; Air filter, 2; Filter medium, 2a, 2b; Folded end part, 3; Case, 10: Insertion constriction mechanism, 11, 11 '; Insertion restraint part, 12; Insertion operation part, 13,23; Insertion hole, 15, 25; tag, 20; extraction narrowing mechanism, 21, 21 '; extraction restraint part, 22; extraction operation part.

Claims (5)

An air filter used in a vehicle air conditioner,
A fold-like filter medium inserted into a case that forms a passage for the blown air;
Insertion restraint part that can restrain the fold folding end part of the filter medium on the insertion side to the case to be narrowed, and insertion for switching between restraint and non-restraint of the fold folding end part by the insertion restraint part An air filter comprising: an insertion constriction mechanism having an operation part for operation.   A take-out restraining portion that can be restrained so as to constrict a fold folding end portion of the filter medium opposite to the case into the case, and for switching between restraining and non-constraining of the fold folding end portion by the take-out restraining portion. The air filter according to claim 1, further comprising an extraction constriction mechanism having an extraction operation unit.   The insertion stenosis mechanism further includes an insertion display unit that is provided in the insertion operation unit and displays that the insertion operation unit is for insertion. The extraction stenosis mechanism includes the extraction stenosis mechanism. The air filter according to claim 2, further comprising a take-out display unit that is provided in the operation unit and displays that the take-out operation unit is for take-out.   The insertion restricting portion is formed in a string shape having a length shorter than a lateral width (W) of the fold-fold end portion in an unconstrained state, and an insertion hole formed in the fold of the fold-fold end portion Further, both end portions thereof are temporarily fixed to the folds on the outer end side of the fold end portion, the insertion operation portion is formed in a string shape, and one end portion thereof is The air filter according to claim 1, wherein the air filter is connected to a central portion of the insertion restraining portion in the longitudinal direction.   The take-out restraining portion is formed in a string shape having the same length as the lateral width (W) of the fold-fold end portion in an unconstrained state, and the insertion hole formed in the fold of the fold-fold end portion Further, both end portions thereof are attached to folds on the outer end side of the fold end portion, the take-out operation portion is formed in a string shape, and one end portion thereof is taken out of the take-out portion. The air filter according to claim 2, wherein the air filter is connected to a central portion of the restraining portion in the longitudinal direction.

Images