JP4672089B1 - Ventilation fan filter holding frame - Google Patents

Abstract

Provided is a ventilation fan filter holding frame which can prevent a filter from being caught in a ventilation fan through a vent of a sloped frame part and which has a reinforcing structure when manufactured.
A partition frame that divides a vent into a plurality of partial vents in each inclined frame part is integrally formed of the same material as the base sheet, so that the ventilation fan through the vents of the inclined frame part is provided. Filter entrainment can be prevented. Moreover, since the reinforcing ribs of the ridges are integrally formed of the same material as the base sheet on each partition frame and each slope frame portion, there is no troublesomeness to bend the reinforcing folding pieces when used, When manufactured, it has a reinforcing structure.
[Selection] Figure 1

Description

  The present invention relates to a ventilation fan filter holding frame, and more particularly to a ventilation fan filter holding frame that supports a filter that covers a ventilation opening of the ventilation fan frame.

In a kitchen of a home kitchen or a restaurant, in order to prevent contamination of the fan and motor of the ventilation fan due to oily smoke or dust, the ventilation opening of the ventilation fan frame is covered with a filter.
As a tool for attaching the filter to the ventilation opening of the ventilation fan frame, for example, a ventilation fan cover in which a filter is extended in one opening of a rectangular frame made of synthetic resin is known. In this case, a ventilation opening is covered with a filter by mounting the entire ventilation fan frame in a cap shape. However, in the case of the ventilating fan cover having such a structure, one product is one size. Therefore, a ventilator cover with a different size is required depending on the size of the opening.

Therefore, in recent years, a filter holding frame for a ventilation fan that can be adjusted in size according to the size of the opening of the ventilation fan frame has been developed (for example, Patent Document 1).
The filter holding frame of Patent Document 1 has a main body made of one rectangular base sheet that can be bent line-symmetrically around a hinge portion arranged in the middle of the length direction. In the base sheet, both side portions of the hinge portion are two inclined frame portions having a vent in the center portion. At the time of use, the bending angle of the base material sheet is changed according to the size of the ventilation port, and then the bent base material sheet is put on the ventilation port. Then, the filter is mounted on the ventilation fan frame from above the slope frame.

Japanese Patent No. 3471702

However, the filter holding frame of the ventilating fan of Patent Document 1 has a large vent hole formed inside the both sloped frame portions in this way. Further, when the base sheet is folded, side vents appear on both end faces in the length direction of the base sheet ridge. Therefore, when the fan of the ventilation fan is rotated at a high speed, the filter is caught in the fan of the ventilation fan through the vent and the side vent. As a result, there has been a risk that the filter and the filter holding frame may be damaged, or that the motor of the ventilation fan may break down due to excessive torque due to the entrainment.
Moreover, the filter holding frame of the ventilation fan of Patent Document 1 was manufactured from a single base sheet as described above. For this reason, there is a problem in functionality as a holding frame that holds the filter of the ventilation fan while being stretched above the ventilation opening, being easily deformed with low strength. Therefore, as a technique for solving this problem, in Patent Document 1, a bent piece that folds inward and reinforces the slope frame portion is formed on the outer edge of the slope frame portion (edge opposite to the vent hole side). Is disclosed. However, the bent piece requires time and effort for bending. As a result, the more the number of bent pieces formed for the purpose of increasing the strength of the filter holding frame, the more trouble and mistakes are made in the bending work, and the more difficult it is to use.

  Therefore, as a result of earnest research, the inventor integrally formed a partition frame that divides the vents and side vents of each slope frame part into a plurality of pieces with the same material as the base sheet made of synthetic resin or aluminum foil, In addition, it is found that if the reinforcing ribs of the ridges are integrally formed of the same material as the base sheet on each partition frame and each slope frame part, all the above-mentioned problems are solved, and this invention Was completed.

The present invention can prevent the entrainment of the filter to the exhaust fan through the vent slope frame portion, yet while have a reinforcement structure at the time it was produced, the ridge of the base sheet in a longitudinal direction at both ends It is an object of the present invention to provide a ventilation fan filter holding frame capable of preventing the filter from being caught in the ventilation fan through the side ventilation port appearing on the surface .

The invention according to claim 1 is the ventilation fan filter holding frame that is attached to the ventilation fan frame and supports the filter that covers the ventilation opening of the ventilation fan frame. The two sloped frame portions having the vent holes and the two attachment plate pieces disposed at the other end portions of the two slope frame portions and attached to the ventilation fan frame are each a second plate-like hinge. Triangular roof shape or trapezoidal roof with one rectangular base material sheet made of synthetic resin or aluminum foil integrally connected with the same material through the section, and the first plate-like hinge section as a ridge A fixing member for fixing the two attachment plate pieces of the base sheet folded into a shape to the ventilation fan frame in a state where the base sheet is put on the ventilation port; Divide vents into multiple partial vents The partition frame is integrally formed of the same material as the base sheet, and the ribs of the ribs are integrally formed of the same material as the base sheet on each partition frame and each slope frame portion. Formed at one end of each of the slope frame portions at both ends in the length direction of the ridge, when the base sheet is folded into a triangular roof shape or a trapezoidal roof shape, The side entrainment prevention frame that divides the side vents that appear on both end faces in the length direction into a plurality of partial side vents is a ventilation fan filter holding frame that is integrally formed of the same material as the base sheet. .

According to the first aspect of the present invention, the partition frame that divides the ventilation holes into the plurality of partial ventilation holes is integrally formed of the same material as that of the base sheet in each slope frame part. It is possible to prevent the filter from being caught in the ventilation fan through the mouth. Moreover, since the rib reinforcement ribs are formed integrally with each partition frame and each slope frame part using the same material as the base sheet, the slope frame part is used in use as in the conventional product. There is no inconvenience of bending the bending piece for reinforcement, and it has a reinforcing structure when it is manufactured.
That is, when using the ventilation fan filter holding frame, the base sheet is bent into a triangular roof shape or a trapezoidal roof shape around the first plate-shaped hinge, and the base sheet in this state is fixed so as to cover the ventilation opening. It is only necessary to fix both mounting plate pieces to the ventilation fan frame using a member.

In addition, when using the ventilation fan filter holding frame, the base sheet is folded into a triangular roof shape or a trapezoidal roof shape around the first plate-like hinge portion, so that both end surfaces in the length direction of the ridge of the base sheet In addition, a triangular side vent appears in side view. These side air vents are divided into a plurality of partial side air vents by the double side entrainment preventing frames. As a result, it is possible to prevent the filter from being caught in the ventilation fan that is generated through the vent holes on both sides.

In addition, since the configuration in which the side entrainment prevention frame is arranged at both end portions in the longitudinal direction of the ridge among the one end portions of each slope frame portion is adopted, At both end portions in the length direction, virtual reinforcing structural frames appear from both end portions in the length direction of the ridge and the wrapping prevention frames on both sides. This gives high strength, which cannot be obtained with conventional products that only have a wing-shaped bent piece formed on the slope frame, to both ends in the length direction of the ridge among one end of each slope frame. Can do.

As a ventilation fan, various household ventilation fans, various commercial ventilation fans, and the like can be employed. The ventilation fan may be installed on the side wall of the building or may be installed on the ceiling of the building.
Examples of the material of the ventilation fan frame include various synthetic resins (polypropylene, polyethylene, polyvinyl chloride, fluorine-containing resins including ABS, etc.), various metals (iron, stainless steel, aluminum, etc.), and various trees (cedar, firewood, Pine, paulownia, cocoon, etc.) and various ceramics can be employed.
As the external shape of the ventilation fan frame, for example, a circle, an ellipse, or a polygon including a triangle including a quadrangle can be adopted as viewed from the direction facing the ventilation opening.
The size of the ventilation fan frame is appropriately changed depending on the size of the ventilation opening. The size (diameter) of the ventilation port (fan) is arbitrary. For example, 15 cm, 20 cm, 25 cm, and 30 cm for general home use, and 30 to 60 cm for business use.

As the material for the base sheet, various synthetic resins such as polypropylene, polyethylene, polyvinyl chloride, fluorine-containing resin containing ABS, polycarbonate, polyethylene terephthalate (PET), and the like can be used. Of these, flame retardant synthetic resins are preferred. Moreover, aluminum foil (aluminum film foil) can be employed as another material for the base sheet. The aluminum foil for the base sheet of the ventilation fan filter support frame is formed into a predetermined shape and reinforced by pressing.
The thickness of the base sheet is 0.5 mm or more, for example, 0.5 mm, 0.7 mm, or 0.8 mm in the case of a synthetic resin. Moreover, in the case of the thing made from aluminum foil, it is 0.2 mm or more, for example, 0.25 mm-0.5 mm.

The base sheet is composed of two slope frame parts, two attachment plate pieces, one first plate hinge part, and two second plate hinge parts. These seven sheet components are integrally connected with the same material. As a manufacturing method of the base sheet having these sheet components, for example, vacuum forming, pressure forming, press molding, injection molding, or the like can be employed.
Moreover, when the base sheet is folded into a triangular roof shape or a trapezoidal roof shape at one end of each slope frame portion of the base sheet in the length direction of the ridge, Side partition frames appearing on both end faces in the length direction and for dividing the triangular side vents in a side view may be provided. The shape of the side partition frame is arbitrary, and the number of the side partition frames is also arbitrary. Thus, when the partition frame for both side surfaces is formed in the base material sheet, it is possible to prevent the filter from being caught in the ventilation fan from the side surface vent holes. Further, when the reinforcing ribs are formed on the side wall partition frames, the side wall partition frames can be reinforced.

For example, a rectangular frame shape (including a square shape, a rectangular shape, and a trapezoidal frame shape) can be adopted as the appearance shape of the two slope frame portions. Moreover, although both shapes may be different, both slope frame parts are the same shape. Although the sizes of the both slope frame portions may be different sizes, the same size is preferable.
The first plate-like hinge portion and the second plate-like hinge portion are continuously thinned from one end to the other end of the base sheet (in the case of synthetic resin, the thickness is 0.5 to 1 mm, made of aluminum foil) In some cases, it has a bent portion (groove) of a single streak that is about 0.1 mm thick or a bent portion of two or more parallel streaks. The cross-sectional shape of the bent portion is a U shape, a V shape, or the like. The “plate-like hinge part” is a hinge part that is formed by thinning a part of the base sheet in this way and is integrally formed of the same material as the base sheet.
If the width | variety of a 1st plate-shaped hinge part is small, the bending shape of a base material sheet will become a triangular roof shape. Moreover, if the width | variety of a 1st plate-shaped hinge part is large, the bending shape of a base material sheet will become a trapezoidal roof shape.

As the shapes of the two attachment plates, for example, a rectangular frame shape or the like can be adopted. Although the shape of both attachment plates may be different, the same shape is preferable. The sizes of both mounting plates may be different, but the same size is preferred.
As the attachment positions of the two attachment plates on the surface (exposed surface) of the ventilation fan frame, for example, both side portions of the ventilation fan frame centered on the ventilation opening can be adopted. This portion is, for example, a line-symmetrical portion around the center line of the ventilation port in the frame plate (front plate) in which the ventilation port is formed. In addition, among the outer peripheral frame plates of the ventilation fan frame, a line-symmetrical portion around the center line of the ventilation port may be used.
As the fixing member, for example, a double-sided tape, an adhesive, or the like can be employed. The installation position of the fixing member in the mounting plate piece is generally the back surface of the mounting plate piece. However, since the mounting plate piece can be bent by the second hinge portion, a fixing member may be installed on the surface of the mounting plate piece.

As the shape of the partition frame, for example, a linear shape, a cross shape, a V shape, or a U shape can be adopted. In addition, an arbitrary shape may be used.
The reinforcing rib is a continuous protrusion that does not reach from one end to the other end of the base sheet.
In each partition frame and each slope frame portion, a portion (region) where the reinforcing rib is formed is arbitrary. Further, the number of reinforcing ribs formed may be one or two or more. The reinforcing rib may be a straight rib or a curved rib. The protruding direction of the reinforcing rib may be the front side or the back side of the base sheet.
As the cross-sectional shape of the reinforcing rib, for example, a U shape, a V shape, or the like can be adopted.
The length direction of the reinforcing rib is preferably the length direction of the partition frame in which the reinforcing rib is formed or the length direction of the frame portion in which the reinforcing rib of the inclined frame portion is formed because the reinforcing effect is enhanced.

The side surface entanglement prevention frame is a kind of the side surface partition frame formed on the base material sheet, and is composed of two or more partial side surface entanglement prevention frames connected by a plate-like hinge portion.
  Reinforcing ribs may be integrally formed of the same material as the base sheet in each partial side surface entanglement prevention frame. The length direction of the reinforcing rib is preferably set to the length direction of the partial side wrap-around preventing frame because the reinforcing effect is enhanced.

According to the first aspect of the present invention, the partition frame that divides the ventilation holes into the plurality of partial ventilation holes is integrally formed of the same material as that of the base sheet in each slope frame part. It is possible to prevent the filter from being caught in the ventilation fan through the mouth. Moreover, since the rib reinforcement ribs are formed integrally with each partition frame and each slope frame part using the same material as the base sheet, the slope frame part is used in use as in the conventional product. There is no inconvenience to bend the folded piece to be reinforced, and it has a reinforcing structure when manufactured.
Further, when the base sheet is folded into a triangular roof shape or a trapezoidal roof shape with the first plate-like hinge as the center, side vents appearing on both end surfaces in the length direction of the base sheet ridge are provided. Then, it is divided into a plurality of partial side vents by a side entrainment prevention frame. Thereby, it is possible to prevent the filter from being caught in the ventilation fan through the vent holes on both sides.

It is a perspective view which shows the use condition of the ventilation fan filter holding frame which concerns on Example 1 of this invention. It is a top view of the ventilation fan filter holding frame which concerns on Example 1 of this invention. It is a perspective view of the ventilation fan filter holding frame which concerns on Example 1 of this invention. It is a top view of the ventilation fan filter holding frame of another aspect which concerns on Example 1 of this invention. It is a top view of the ventilation fan filter holding frame of another aspect which concerns on Example 1 of this invention. It is a top view of the ventilation fan filter holding | maintenance frame of another aspect which concerns on Example 1 of this invention. It is a perspective view which shows another use condition of the ventilation fan filter holding frame which concerns on Example 1 of this invention. (A) is a perspective view which shows the use condition of the ventilation fan filter holding frame which concerns on Example 2 of this invention. (B) is a principal part enlarged plan view which shows the state before the assembly of the side entanglement prevention frame which comprises a part of ventilation fan filter holding frame which concerns on Example 2 of this invention. It is a perspective view which shows another use condition of the ventilation fan filter holding frame which concerns on Example 2 of this invention.

  Examples of the present invention will be specifically described below. Here, a ventilation fan filter holding frame in which a filter is attached to a household ventilation fan frame that is exposed without being covered with a porous plate is taken as an example.

In FIG. 1, reference numeral 10 denotes a ventilation fan filter holding frame according to the first embodiment of the present invention. The ventilation fan filter holding frame 10 is attached to a ventilation fan frame 11 of a square household ventilation fan when viewed from the front. The filter 13 made of non-woven fabric made of flame-retardant synthetic resin fiber with the elasticity of a rubber string added to the periphery covering the ventilation port 12 is supported. The ventilation fan filter holding frame 10 has a rectangular base sheet 14 in a plan view having a lateral length longer than one side (25 to 40 cm) of the ventilation fan frame 11 and a triangular roof shape (trapezoidal roof shape). A double-sided tape (fixing member) 15 that is fixed to the ventilation fan frame 11 in a bent state is provided.
As shown in FIGS. 2 and 3, the base sheet 14 is a thin plate made of a flame retardant synthetic resin (such as flame retardant polypropylene), having a thickness of 0.5 mm, a length of 44 cm, and a width of 27 cm. The base sheet 14 includes two slope frame portions 16, one first plate-like hinge portion 17, two attachment plate pieces 18, two second plate-like hinge portions 19, and two side surfaces. The entrainment prevention frame 20 is vacuum-formed. Of course, these vacuum-formed parts are integrally connected with the same material as the base sheet 14.

Hereinafter, these components will be specifically described.
Both slope frame portions 16 are arranged on both side portions in the length direction (sheet length direction) of the base sheet 14. The both slope frame portions 16 are respectively formed with vent holes 21 that can communicate with the vent holes 12 of the ventilating fan frame 11 in the inner space. Both slope frame portions 16 are frame members having the same trapezoidal shape in plan view, and substantially the entire region except the outer peripheral edge portion for the purpose of reinforcement protrudes toward the sheet surface side with a uniform height. Moreover, the shape of both vent holes 21 is also a trapezoid similar to the both slope frame portions 16.

  Both slope frame portions 16 include an intermediate portion in the length direction of the lower bottom frame portion 16a, and an intermediate portion in the length direction of the upper bottom frame portion 16b shorter than the lower bottom frame portion 16a. Are connected by a single linear partition frame 22 which is long in the sheet length direction. Both partition frames 22 are members that equally divide the vent 21 into two partial vents 23 and are integrally formed of the same material as the base sheet 14. Both partial vents 23 have a line-symmetric shape with the partition frame 22 as the center line in plan view. Instead of the linear partition frame 22, for example, a cross-shaped partition frame 22A (FIG. 4) that divides the vent hole 21 into four, or a V-shaped partition frame 22B that divides the vent hole 21 into three. (FIG. 5) may be adopted. Note that reinforcing ribs 24 are formed in the frame portion in the sheet length direction of the partition frame 22A. Moreover, although the reinforcing rib 24 is not formed in the partition frame 22B, this may be formed.

  Among the sloped frame portions 16, the frame portions 16c and the partition frame 22 on both sides in the sheet width direction are provided with reinforcing ribs 24 that are long in the length direction of the both frame portions 16c and the length direction of the partition frame 22. One sheet is formed integrally with the same material as the sheet 14 and protrudes toward the back side of the sheet. On both sides in the sheet width direction of both slope frame parts 16, a pair of right-angled bulging parts 16d in plan view are integrally formed of the same material as the base sheet 14. In addition, both the slope frame portions 16 are connected to each other by a first plate-like hinge portion 17 at the upper bottom side frame portion.

  The 1st plate-shaped hinge part 17 is arrange | positioned at the intermediate part of the length direction of the base material sheet 14 (the part of the ridge when the base material sheet 14 is bent in the shape of a triangular roof at the time of use). The first plate-like hinge portion 17 is a strip-like member that is long in the width direction (sheet width direction) of the base sheet 14, and a parallel two-section U-shaped bent portion 31 is in the sheet length direction. It is formed on both sides. Among the first plate-like hinge portions 17, between the two bent portions 31, one reinforcing rib 24 that protrudes toward the sheet front side and that is long in the sheet width direction extends over substantially the entire length of the first plate-like hinge portion 17. The base material sheet 14 and the same material are integrally formed. Two attachment plate pieces 18 are attached to the lower bottom frame portion of both slope frame portions 16 via a second plate-like hinge portion 19 outside the lower bottom frame portion (on the side of the air vent 21). Are connected over the entire length of the opposite side.

Both attachment plate pieces 18 are arranged at both ends of the base sheet 14 in the length direction. Both attachment plate pieces 18 are strip-shaped plate members that are long in the sheet width direction.
Moreover, both the 2nd plate-shaped hinge parts 19 are arrange | positioned in the vicinity of the both ends of the length direction of the base material sheet 14. FIG. Both of the second plate-like hinge portions 19 are formed of a bent portion having a thin U-shaped cross section with a single line long in the sheet width direction.

The two side surface roll-in preventing frames 20 are arranged at both end portions in the sheet width direction in the intermediate portion in the length direction of the base sheet 14. The both-sides roll-in preventing frame 20 is a band-shaped member that is long in the sheet length direction and is bent in a substantially V-shape spanned between the bulging portions 16d facing each other of the slope frame portions 16 (FIG. 1). ).
The both-side surface entanglement preventing frame 20 has two partial side surface entanglement preventing frames 30 having the same length and having one end connected by a third plate-like hinge portion 25. Reinforcing ribs 24 extending in the sheet length direction are integrally formed with the same material as that of the base sheet 14 in the partial side wrap prevention frame 30 so as to protrude to the surface side of the base sheet 14.
Note that instead of the linear side wrapping prevention frame 20 that is long in the sheet length direction, a side wrapping prevention frame 20A in which the intermediate portion in the length direction protrudes outward in a letter shape in plan view may be adopted. Good (FIG. 6). According to this configuration, when the base sheet 14 is bent, the filter 13 is separated from the ventilation port 12 by the amount that the intermediate portion in the length direction protrudes outward as compared with the case of the both-sides entrainment prevention frame 20. The distance gets longer. Therefore, the effect of preventing the filter 13 from being caught in the ventilation fan is enhanced.

The third plate-like hinge portion 25 is a substantially square member in plan view having the same width as the first plate-like hinge portion 17. The third plate-like hinge portion 25 is formed with bent portions 25a having a U-shaped cross section with two parallel bars formed on both sides in the sheet length direction. Of the third plate-like hinge portion 25, between the two bent portions 25a, one short reinforcing rib 24 protruding to the front side of the sheet is integrally formed of the same material as the base sheet 14. .
The other end portions of both partial side wrap-around preventing frames 30 are connected to corresponding bulging portions 16d via two fourth plate-like hinge portions 26 which are bent portions having a U-shaped cross section of one line. . Each fourth plate-like hinge portion 26 protrudes to the front side of the seat.
Further, among the intermediate portions in the length direction of the base sheet 14, at both end portions in the sheet width direction, a home base that is horizontally long in a plan view between the both slope frame portions 16 and the side entrainment prevention frames 20. A notch 27 having a shape (pentagon) is formed.

Next, with reference to FIGS. 1-3 and FIG. 7, the usage method of the ventilation fan filter holding frame 10 which concerns on Example 1 of this invention is demonstrated.
As shown in FIG. 1, when the ventilation fan filter holding frame 10 is used, first, the first plate-like hinge portion 17, specifically, two parallel bent portions 31 of the first plate-like hinge portion 17 are used. The base material sheet 14 is bent into a triangular roof shape with the center at the center. At this time, the side entrainment prevention frame 20 is bent into an inverted triangular shape (V shape) via the third plate-like hinge portion 25 and the fourth plate-like hinge portion 26. In addition, among the intermediate portions in the length direction of the base sheet 14, triangular side vents 32 appear in both sides of the sheet width direction (both end surfaces in the length direction of the ridge) as viewed from the side. To do. The side air vents 32 are divided into two partial side air vents 32 a by the both side entrainment preventing frame 20. As a result, when the fan 33 of the ventilation fan is rotated at a high speed, the filter 13 can be prevented from being caught in the ventilation fan through the air vents 32 on both sides.

In addition, during use, the side-folding prevention frame 20 that has been folded back is disposed at both end portions in the sheet width direction among the one end portions of the both slope frame portions 16, so that these slope frame portions 16 are included in these portions. From both side surface entrainment prevention frames 20, a rectangular virtual reinforcing structure frame A appears in a side view. As a result, both end portions in the length direction of the frame portions on the upper bottom side of both slope frame portions 16 have high strength that cannot be obtained by a conventional product in which a simple blade-shaped bent piece is formed on the slope frame portion 16. Can be granted.
After that, the two attachment plate pieces 18 are folded inward (folded in the folding direction of the side wrapping prevention frame 20) via the two second plate-like hinge portions 19, respectively. Next, these mounting plate pieces 18 are fixed (adhered) to each of the outer peripheral frame plates 11 a of the ventilation fan frame 11 with a double-sided tape 15 on a line-symmetrical portion around the center line of the ventilation port 12. Thereafter, the filter 13 is placed on the ventilation fan frame 11 from above the ventilation fan filter holding frame 10.

  Thus, since the partition frame 22 which divides the vent hole 21 into the two partial vent holes 23 in the both slope frame portions 16 is formed integrally with the base material sheet 14, both the slope frames are formed. It is possible to prevent the filter 13 from being caught in the ventilation fan through the vent hole 21 of the portion 16. Moreover, since the reinforcing ribs 24 are integrally formed of the same material as that of the base sheet 14 in each of the partition frames 22 and the both slope frame portions 16, the slope frames are used in use as in the conventional product. There is no inconvenience of bending the bent piece that reinforces the portion 16, and the ventilation fan filter holding frame 10 having the reinforcing structure can be obtained at the time of manufacture.

  Moreover, as shown in FIG. 7, the ventilation fan filter holding frame 10 of Example 1 can be used also for the ventilation fan frame 11 of a large-sized ventilation fan. In this case, after folding the base sheet 14 into a triangular roof shape, both the mounting plate pieces 18 are folded outward (folded in the direction opposite to the bending direction of the side wrapping prevention frame 20), and the ventilation fan frame 11 In the frame plate (front plate) 11b in which the ventilation port 12 is formed, each double-sided tape 15 is fixed to a line-symmetrical portion around the center line of the ventilation port 12. Thus, the ventilation fan filter holding frame 10 of Example 1 can be used even if it is a ventilation fan from which size differs.

Next, a ventilation fan filter holding frame according to Embodiment 2 of the present invention will be described with reference to FIGS.
As shown in FIG. 8A, the ventilating fan filter holding frame 10A according to the second embodiment is characterized by a first plate-like hinge portion having a short length instead of the first plate-like hinge portion 17 of the first embodiment. 17A is used, and instead of the both sloped frame parts 16 of the first embodiment, both sloped frame parts 16A having a short upper bottom frame part 16b are adopted, and the side entanglement preventing frame 20 of the first embodiment is used. Instead, a four-stage inverted pyramid-shaped side entrainment prevention frame 20B is employed. By shortening the first plate-like hinge portion 17A, the opening area of the side air vents 32 can be made larger than that of the first embodiment. As a result, the side entrainment preventing frame 20B developed on one sheet before assembly can be formed on the ridge-side formation portion of the both-side vent holes 32 in the substrate sheet 14 (FIG. 8B). ).

Side entanglement preventing frame 20B is directed to the body long substantially rectangular sheet piece 40 in bridged sheet lengthwise between opposed to small bulge portion 16d of the both slant frame portion 16 A. The sheet piece 40 is integrally formed of the same material as the base sheet 14. In the sheet piece 40, six slits S are formed in parallel with the sheet width direction at a predetermined pitch in the sheet length direction while alternately changing the cutting directions from both long sides. Accordingly, the sheet piece 40 is sequentially provided with two first partial side surface entanglement preventing frames 30B, two second partial side surface entanglement preventing frames 30B, and 2 One third partial side surface entanglement prevention frame 30C and one fourth partial side surface entanglement prevention frame 30D are formed. In addition, reinforcing ribs 24 that are long in the sheet width direction are integrally formed of the same material as the base sheet 14 in the first to fourth partial side surface roll-in preventing frames 30A to 30D.

  Each first partial side surface entanglement prevention frame 30A and each second partial side surface entanglement prevention frame 30B are connected by a first connection frame 41 via a folding line. Further, each second partial side surface entanglement prevention frame 30B and each third partial side surface entanglement prevention frame 30C are connected by two second connection frames 42 via a folding line. Furthermore, each of the third partial side surface entanglement prevention frames 30C and the fourth partial side surface entanglement prevention frame 30D are connected by a single long third connection frame 43 via a folding line. An attachment plate piece 18A, which is a short plate piece, is connected to the tip of the fourth side surface roll-in prevention frame 30D via a folding line. Further, the first to third connection frames 41 to 43 and the attachment plate piece 18 </ b> A are integrally formed of the same material as the base sheet 14.

Next, with reference to FIG. 8 and FIG. 9, the usage method of the filter holding frame 10A for ventilation fans which concerns on Example 2 of this invention is demonstrated.
As shown in FIGS. 8A and 8B, when using the ventilation fan filter holding frame 10A according to the second embodiment, the first to fourth partial side surface roll-in preventing frames 30A to 30D are replaced with the first to third frames. Folding is performed while alternately changing the folding direction to the sheet front side and the sheet back side, with the folding line to the connection frames 41 to 43 as the center. As a result, the four-stage inverted pyramid-shaped side entrainment prevention frame 20B is assembled. After the assembly, two short double-sided tapes 15 are used, and the mounting plate piece 18A is fixed to a portion of the outer peripheral frame plate 11a of the ventilation fan frame 11 that is disposed at a right angle to the mounting position of the mounting plate piece 18.
Moreover, as shown in FIG. 9, the ventilation fan filter holding frame 10A of Example 2 can be used also for the ventilation fan frame 11 of a large-sized ventilation fan. In this case, after folding the base sheet 14 into a triangular roof shape, both the mounting plate pieces 18 are folded outward, and the ventilation fan frame 11 out of the frame plate 11b in which the ventilation hole 12 is formed, Each double-faced tape 15 is fixed to a line-symmetric part with the 12 center line as the center. As described above, the ventilation fan filter holding frame 10A of the second embodiment can be used even if the ventilation fans have different sizes.

Thus, instead of the side surface entanglement preventing frame 20 of the first embodiment, by adopting the four-stage inverted pyramid side entanglement preventing frame 20B, each side surface over the entire length in the height direction of each side air vent 32 is provided. The beam which divides | segments the vent hole 32 into three is formed, and the effect that the entrainment prevention effect of the filter 13 increases is acquired.
Other configurations, operations, and effects are substantially the same as those of the first embodiment, and thus description thereof is omitted.

  The ventilating fan filter holding frame of the present invention is useful as a ventilating fan for home use or business use in which the vent of the ventilating fan frame is not covered with a porous plate.

10, 10A ventilation fan filter holding frame,
11 Ventilation fan frame,
12 Ventilation opening,
13 Filter,
14 base sheet,
15 Double-sided tape (fixing member),
16, 16A Slope frame,
17, 17A 1st plate-like hinge part,
18, 18A Mounting plate piece,
19 Second plate-like hinge part,
20, 20A, 20B Side entrainment prevention frame,
21 Vents,
22, 22A, 22B partition frame,
23 Partial vents,
24 Reinforcement ribs.

Claims (1)

In the ventilation fan filter holding frame that is attached to the ventilation fan frame and supports the filter that covers the ventilation opening of the ventilation fan frame,
Each one end part is connected by a first plate-like hinge part, and the inner space serves as a vent, and is disposed at each other end part of the two slope frame parts, and the ventilation fan frame Two attachment plate pieces to be attached are each a rectangular base material sheet made of synthetic resin or aluminum foil integrally connected with the same material via a second plate-like hinge part,
The ventilation fan frame with two attachment plate pieces of the base sheet folded into a triangular roof shape or a trapezoidal roof shape having the first plate-like hinge as a ridge, with the base sheet covered with the ventilation opening And a fixing member for fixing to
In each of the slope frame portions, a partition frame that divides the vent into a plurality of partial vents is formed integrally with the same material as the base sheet, respectively.
In each partition frame and each slope frame portion, a reinforcing rib of a ridge is integrally formed of the same material as the base sheet,
Of the one end of each slope frame portion, the length direction of the ridge of the base sheet when the base sheet is folded into a triangular roof shape or a trapezoidal roof shape at both ends in the length direction of the ridge A ventilation fan filter holding frame in which side entrainment preventing frames that divide side vents that appear on both end faces into a plurality of partial side vents are integrally formed of the same material as the base sheet .

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