JP2015104694A - Filter fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter fixture which fixes a filter to a natural air supply/exhaust device and is advantageous in cost.SOLUTION: A filter fixture 11 includes: press parts 13-16 which press a filter 41 on four opposite corner parts of a flat surface 71; projection pieces 18-21 which are connected to the press parts 13-16 and of which end parts are deformable in a direction separating from the press parts 13-16; and a rubber band 35 which biases the projection pieces 18-21 in a direction separating from the press parts 13-16 to bring them into contact with an inner surface of an opening/closing lid. As such the filter fixture 11 is mounted, the filter 41 is pressed by the press parts 13-16 constantly irrespective of an opening/closing state of a natural air supply/exhaust device 61, and a mounting state of the filter can be stabilized. Furthermore, as the filter fixture 11 is structured of one sheet-like flexible material and the rubber band 35, it can be advantageous in cost.

Description

  The present invention relates to a filter attachment, and more particularly to a filter attachment for attaching a filter to a natural air supply / exhaust device attached to a wall surface on the indoor side.

  8 is a front view schematically showing the external shape of a conventional natural air supply / exhaust device, and FIG. 9 is an external view of the device main body and the filter after the filter is removed in the natural air supply / exhaust device shown in FIG. FIG. 10 is a front view schematically showing the shape, and FIG. 10 is a perspective view schematically showing the external shape of the apparatus main body shown in FIG.

  With reference to these drawings, the natural air supply / exhaust device 61 is mainly configured by a device main body 65, an opening / closing lid (not shown), and a filter 81.

  The apparatus main body 65 includes a flat surface 71 having an outer edge having a square shape, an edge portion 74 surrounding an outer peripheral end portion of the flat surface 71, and a circular vent 75 formed in the center of the flat surface 71. . On the flat surface 71, attachment portions 72 formed by a part of the flat surface 71 being recessed toward the vent hole 75 are formed at four positions facing each other through the vent hole 75, and on the outer peripheral end portion of the flat surface 71. A ring-shaped cushioning material 73 is attached to the entire circumference. A shaft body 79 is formed at the center of the vent hole 75 to allow the above-described opening / closing lid operating rod 78 to slide freely.

  The above-described square plate-shaped opening / closing lid (not shown) is attached so as to face the flat surface 71 and is configured to be movable from the flat surface 71 in the ventilation direction.

  As shown in FIG. 9, the filter 81 is configured around the nonwoven fabric 82 and the holding portion 83. The holding portion 83 includes a ring-shaped outer frame portion 86, an opening frame portion 87 disposed inside the outer frame portion 86, and a connecting portion 88 that extends radially from the opening frame portion 87 toward the outer frame portion 86. , And a protruding portion 89 provided on the outer frame portion 86 corresponding to the connecting portion 88, and the nonwoven fabric 82 has an outer frame portion 86 and an opening frame portion so that the inside of the opening frame portion 87 is opened. 87 and the connecting portion 88 are attached to one side. When attaching the filter 81, the shaft body 79 of the device main body 65 is inserted into the opening frame portion 87, and the filter 81 is attached to the device main body 65 so that the protruding portion 89 is fitted to the attachment portion 72.

  FIG. 11 is a perspective view schematically showing the external shape of the natural air supply / exhaust device when the natural air supply / exhaust device shown in FIG. 8 is attached to the wall surface, and FIG. 12 is an XII-XII shown in FIG. It is sectional drawing of a line.

  Referring to these drawings, in the natural air supply / exhaust device 61, the device main body 65 is attached to the wall surface 63 on the indoor side, and the opening / closing lid 66 is attached to the operating rod 78. At this time, the vent hole 75 is in a state of being fitted inside the pipe 64 that penetrates the wall surface 63.

  When the natural air supply / exhaust device 61 is not used, the open / close lid 66 is in contact with the flat surface 71 through the cushioning material 73 as shown in FIG. 11 and FIG. Further, when the natural air supply / exhaust device 61 is used, as shown in FIG. 11 and FIG. 12 (2), the opening / closing lid 66 is held in a state of being moved in the ventilation direction of the ventilation hole 75. Air can enter and exit through 75. When the outside air flows into the room, dust such as pollen contained in the outside air is removed by the nonwoven fabric 82 of the filter 81, so that fresh air can be taken into the room.

  By the way, if the use of the natural air supply / exhaust device 61 shown in FIGS. 8 to 12 is continued, the nonwoven fabric 82 of the filter 81 may be contaminated by dust. In such a case, only the nonwoven fabric 82 of the filter 81 cannot be replaced, and the entire filter 81 must be replaced with a new one. However, in the natural air supply / exhaust device 61, the filter 81 must be a special filter in which the shape of the holding portion 83 (see FIG. 9) is adapted to the shape of the mounting portion 72, and lacks versatility. Moreover, since the filter 81 provided with such a holding part 83 is generally high in cost, it is not economical if the entire filter 81 must be replaced every time the nonwoven fabric 82 becomes dirty.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a cost-effective filter mounting tool for mounting a filter to a natural air supply / exhaust device.

  In order to achieve the above object, the invention according to claim 1 is attached to a wall surface on the indoor side, is attached so as to be opposed to the flat surface and a vent formed in the center of the flat surface, and the flat surface. A filter mounting tool for mounting a sheet-like filter on a flat surface so as to block an air vent, with respect to a natural air supply / exhaust device having an open / close lid movable in the ventilation direction from the surface. A pressing part that presses partly, an outer part that is connected to the pressing part and whose end part is deformable in a direction away from the pressing part, and the outer part is urged in a direction away from the pressing part, And an urging means for contacting the inner surface.

  If comprised in this way, a press part will always press a filter.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the pressing portion and the outer portion are formed by punching one sheet-like flexible material, and the outer portion is flexible. The urging means is made of a ring-shaped elastic body that engages with each of the protruding pieces and works so as to approach each other.

  If comprised in this way, it will become advantageous in cost and the stable urging | biasing force will arise.

  According to a third aspect of the present invention, in the configuration of the second aspect of the present invention, a shaft body is formed at the center of the vent so that the operating rod of the opening / closing lid can slide freely. An opening that can be inserted into the body is formed.

  If comprised in this way, the position of a press part will be decided.

  According to a fourth aspect of the present invention, in the configuration of the second or third aspect of the invention, the outer edge of the flat surface has a square shape, the vent is formed in a circular shape, and each of the pressing portions is a flat surface. The four corners facing each other are pressed.

  If comprised in this way, a press location will become wide.

  As described above, in the first aspect of the invention, the pressing portion always presses the filter, so that the filter mounting state is stable.

  The invention described in claim 2 is advantageous in terms of cost in addition to the effect of the invention described in claim 1, and a stable urging force is generated, so that the usability is improved.

  In the invention according to claim 3, in addition to the effect of the invention according to claim 2, since the position of the pressing portion is determined, the attachment state of the filter is further stabilized.

  In the invention according to claim 4, in addition to the effect of the invention according to claim 2 or claim 3, since the pressing place becomes wide, the filter can be stably pressed by the pressing portion.

It is the front view which showed roughly the external appearance shape of the natural air supply / exhaust device after attaching the filter attachment tool by 1st Embodiment of this invention. It is the perspective view which showed schematically the external appearance shape of the filter fixture shown in FIG. It is the perspective view which showed schematically the expanded view of the filter fixture shown in FIG. FIG. 3 is a schematic process diagram for explaining an attachment process of the filter attachment shown in FIG. 2. It is the perspective view which showed roughly the external appearance shape of the natural air supply / exhaust device when the natural air supply / exhaust device shown in FIG. 1 was attached to the wall surface. It is an expanded sectional view of the VI-VI line shown in (1) of FIG. It is an expanded sectional view of the VII-VII line shown in (2) of Drawing 5. It is the front view which showed roughly the external appearance shape of the conventional natural air supply / exhaust apparatus. FIG. 9 is a front view schematically showing the appearance of each of the apparatus main body and the filter after the filter is removed in the natural air supply / exhaust device shown in FIG. 8. FIG. 10 is a perspective view schematically showing an external shape of the apparatus main body shown in FIG. 9. It is the perspective view which showed roughly the external appearance shape of the natural air supply / exhaust device when the natural air supply / exhaust device shown in FIG. 8 was attached to the wall surface. It is sectional drawing of the XII-XII line shown in FIG.

  FIG. 1 is a front view schematically showing the external shape of a natural air supply / exhaust device after the filter fixture according to the first embodiment of the present invention is attached, and FIG. 2 is a filter attachment shown in FIG. FIG. 3 is a perspective view schematically showing an external shape of the tool, and FIG. 3 is a perspective view schematically showing a developed view of the filter fixture shown in FIG. 1. Since the structure of the natural air supply / exhaust device is the same as the conventional one, the description here will not be repeated.

  With reference to these figures, the filter fixture 11 is made of a flexible material such as polypropylene, and is connected to the pressing portion 13 to the pressing portion 16 and the pressing portion 13 to the pressing portion 16, and each end portion is pressed. A projecting piece 18 to a projecting piece 21 that can be deformed in a direction away from the part 13 to the pressing unit 16; an engagement hole 28 to an engagement hole 31 that are provided on each of the projecting pieces 18 to 21 and connected to each other by a break; A rubber band 35 that engages with the engagement holes 28 to 31 and works so that the protruding pieces 18 to 21 approach each other is provided.

  As shown in FIG. 1, in the state where the filter fixture 11 is attached to the natural air supply / exhaust device 61, each of the pressing portions 13 to 16 presses the filter 41 against the flat surface 71 (see FIG. 8). The rubber band 35 urges the protruding piece 18 to the protruding piece 21 in a direction away from the pressing portion 13 to the pressing portion 16, and the protruding piece 18 to the protruding piece 21 are inner surfaces of an opening / closing lid 66 (see FIG. 11) (not shown). It is made to contact.

  Each of the pressing portion 13 to the pressing portion 16, the protruding piece 18 to the protruding piece 21, and the engaging hole 28 to the engaging hole 31 of the filter mounting tool 11 can be formed as a single sheet as shown in FIG. 3. It is formed by punching a flexible material. The protruding pieces 18 to 21 are formed radially from the center of the filter fixture 11, and an opening 23 that can be inserted into the shaft body 79 (see FIG. 1) is formed at the center of the filter fixture 11. Yes. Then, in FIG. 3, when the mountain is folded at the portion indicated by the broken line, the valley is folded at the portion indicated by the alternate long and short dash line, and the rubber band 35 (see FIG. 2) (not shown) is engaged with each of the engagement holes 28 to 31, The filter attachment 11 as shown in FIG. 2 is completed.

  FIG. 4 is a schematic process diagram for explaining the process of attaching the filter fixture shown in FIG.

  Referring to the figure, when attaching the filter attachment 11 to the natural air supply / exhaust device 61, first, the opening / closing lid 66 is removed from the device main body 65. Next, the filter 41 made of one sheet of nonwoven fabric is installed on the flat surface 71 so as to close the vent hole 75. At this time, if the filter 41 is formed with an opening 42 that can be inserted into the shaft 79 in advance, the position of the filter 41 is easily determined. Next, the filter attachment 11 is attached from above the filter 41 so that the shaft 79 is inserted through the opening 23. At this time, when the pressing portions 13 to 16 are attached so as to press the four corner portions of the flat surface 71 facing each other, the pressing portions are widened, so that the filter 41 can be pressed stably. Finally, the opening / closing lid 66 is attached to the operating rod 78, and the attachment of the filter attachment 11 is completed.

  FIG. 5 is a perspective view schematically showing the external shape of the natural air supply / exhaust device when the natural air supply / exhaust device shown in FIG. 1 is attached to the wall surface, and FIG. 6 is shown by (1) in FIG. FIG. 7 is an enlarged sectional view taken along line VII-VII shown in FIG. 5 (2).

  Referring to these drawings, when the natural air supply / exhaust device 61 is not used, as shown in FIG. 5 (1) and FIG. The filter 41 is pressed against the flat surface 71 by the pressing portion 13 to the pressing portion 16 by the reaction force generated by the contact with the inner surface 68 of the opening / closing lid 66 by being urged away from the portion 16.

  On the other hand, when the natural air supply / exhaust device 61 is used, as shown in (2) of FIG. 5 and FIG. 7, when the operating lid 78 is slid and the open / close lid 66 is moved from the flat surface 71 in the ventilation direction, Accordingly, the projecting piece 18 to the projecting piece 21 are deformed in a direction away from the pressing unit 13 to the pressing unit 16, but at this time, the projecting piece 18 to the projecting piece 21 are separated from the pressing unit 13 to the pressing unit 16 by the rubber band 35. The filter 41 is pressed against the flat surface 71 by the pressing portion 13 to the pressing portion 16 by the reaction force generated by the contact.

  Further, as shown in FIGS. 5 (2) and 7, the open / close lid 66 is closed to the closed state, that is, natural supply / exhaust as shown in FIGS. 5 (1) and 6 When the device 61 is not used, the operating rod 78 is slid to move the opening / closing lid 66 in a direction approaching the flat surface 71 side. Thereby, the distance between the flat surface 71 and the opening / closing lid 66 is gradually reduced, and the protruding pieces 18 to 21 are deformed in a direction approaching the pressing portions 13 to 16 accordingly. At this time as well, the protruding pieces 18 to 21 are urged by the rubber band 35 in the direction away from the pressing portions 13 to 16 and come into contact with the inner surface 68 of the opening / closing lid 66, and the reaction force caused by the contact filters the filter. 41 is pressed against the flat surface 71 by the pressing portions 13 to 16.

  Thus, the pressing portion 13 to the pressing portion 16 always press the filter 41 against the flat surface 71 regardless of the movement of the opening / closing lid 66, that is, the opened / closed state of the opening / closing lid 66. Stabilize.

  Moreover, according to the filter fixture 11, since the filter 41 should just be a sheet-like thing, it is excellent in versatility.

  When the filter 41 becomes dirty due to use, the filter cover 11 may be removed after removing the opening / closing lid 66, and the dirty filter 41 may be replaced with a new one.

  Thus, the filter fixture 11 has a simple configuration composed of the single sheet-like flexible material as described above and the rubber band 35. When the filter 41 becomes dirty, only the filter 41 is removed. It can be easily replaced, and the filter fixture 11 itself can be used repeatedly, which is advantageous in terms of cost.

  In the above-described embodiment, the filter fixture has a specific shape, but may have another shape as long as the same function is exhibited.

  In the above-described embodiment, the urging means is composed of a ring-shaped elastic body, but other configurations may be employed.

  Furthermore, in the above embodiment, a rubber band is used as the ring-shaped elastic body, but other elastic bodies may be used.

  Furthermore, in the above embodiment, the outer edge of the flat surface has a specific shape, but may have other shapes.

  Furthermore, in the above-described embodiment, the vent is formed in a specific shape, but may have other shapes.

  Furthermore, in the above embodiment, each of the pressing portions presses a specific portion of the flat surface, but may press other portions.

  Furthermore, in the above-described embodiment, the outer portion that contacts the opening / closing lid is configured by a plurality of protruding pieces, but other configurations may be used, and at least one outer portion may be provided. good.

  Furthermore, in the above embodiment, the pressing portion and the outer portion are integrally formed from a single flexible material. However, the pressing portion and the outer portion are separated and combined. Also good.

  Furthermore, in the above embodiment, the pressing portion has a specific shape. For example, a perforation is formed in the pressing portion by cutting a part of the pressing portion along the perforation. It is good also as a structure which can adjust the size of a press part according to the size.

  Further, in the above-described embodiment, the filter attachment has an opening, but the opening is not necessary in the case where the apparatus body has no shaft body.

DESCRIPTION OF SYMBOLS 1 ... Filter attachment tool 13-16 ... Press part 18-21 ... Projection piece 35 ... Rubber band 41 ... Filter 61 ... Natural air supply / exhaust device 63 ... Wall surface 66 ... Opening / closing cover 68 ... Inner surface 71 ... Flat part 75 ... Vent In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (4)

A natural surface having a flat surface, a vent formed in the center of the flat surface, and an open / close lid that is mounted to face the flat surface and is movable in the ventilation direction from the flat surface. A filter mounting tool for mounting a sheet-like filter on the flat surface so as to block the vent hole with respect to the air supply / exhaust device,
A pressing portion for pressing the filter against a part of the flat surface;
An outer portion that is connected to the pressing portion and whose end portion is deformable in a direction away from the pressing portion;
A filter mounting tool comprising urging means for urging the outer portion in a direction away from the pressing portion and abutting against an inner surface of the opening / closing lid. The pressing portion and the outer portion are formed by punching one sheet-like flexible material,
The outer part is composed of a plurality of protruding pieces formed radially from the center of the flexible material,
The filter mounting tool according to claim 1, wherein the biasing means is formed of a ring-shaped elastic body that engages with each of the protruding pieces and works so as to approach each other. A shaft body is formed in the center of the vent so that the operating lid of the opening / closing lid can slide.
The filter attachment according to claim 2, wherein an opening through which the shaft body can be inserted is formed at the center of the flexible material. The outer edge of the flat surface has a square shape, the vent is formed in a circular shape,
4. The filter fixture according to claim 2, wherein each of the pressing portions presses the four corner portions of the flat surface facing each other.

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