JP4393765B2 - Duct cover mounting structure and mounting method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a duct cover mounting structure for concealing an exhaust duct of a range hood fan from the room so as to be invisible, and a mounting method thereof.
[0002]
[Prior art]
Conventionally, a duct cover of a range hood fan includes a lower cover fixed to the top plate of the hood and an upper cover that is externally fitted to the lower cover and moves up and down to be fixed to the ceiling of the room (for example, , See Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 7-18912 (first page, FIGS. 1 to 3)
[0004]
[Problems to be solved by the invention]
However, in the prior art, the upper cover is fixed to the ceiling of the room, and the specific configuration is unknown.
Moreover, since the lower cover is fixed to the top plate of the hood and the upper cover is fixed to the ceiling of the room, it cannot be removed. Therefore, maintenance inspection of the exhaust duct, its connecting portion, the blower unit on the top of the hood accommodated in the lower cover cannot be performed.
Moreover, since both the lower cover and the upper cover have a cylindrical shape, it is necessary to assemble both covers in parallel with the installation of the hood and the piping construction of the exhaust duct, which cannot be retrofitted. Therefore, the work of assembling the duct cover is also troublesome.
[0005]
The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to provide a duct cover in which the upper cover can be easily supported at a desired raised (drawer) height.
Still another object of the present invention is to provide a duct cover that is detachable and can be retrofitted and a method for attaching the duct cover.
[0006]
[Means for Solving the Problems]
The technical means taken in order to solve the above object is a cover of the exhaust duct exposed on the top plate of the hood, and the upper cover is moved up and down by fitting the upper cover into or out of the lower cover. The duct cover is configured to be movable, and the upper cover is raised, and the upper cover is engaged with an engaging portion provided on the chamber wall by the lifting force (Claim 1).
Here, the lower cover and the upper cover described above both have a cylindrical shape, and include a configuration in which the upper cover can be moved up and down by being internally or externally fitted to the lower cover.
In addition, the structure of the engaging portion where the upper cover engages with the rising force is such that the opposing side surface of the upper cover is elastically slightly expanded and deformed by the rising force of the upper cover, and is engaged using the restoring force. The structure that does not let you fall naturally. A configuration in which a small protrusion is provided on the upper end of the inner surface of the side surface facing the upper cover, and the small protrusion engages with a rising force so that the upper cover does not fall naturally. Etc. are mentioned as an example.
[0007]
In the above-described means, the upper cover is raised and engaged with the engaging portion, thereby supporting the upper cover at a desired raised (drawer) height.
[0008]
In addition, the exhaust duct cover exposed on the top plate of the hood, and the hood main body is composed of a lower cover and an upper cover having a shape in plan view in which the upper and lower surfaces and the surface facing the side wall of the hood are open. On the other hand, the upper cover is fitted inside or outside so that the upper cover can be moved up and down, the lower end of the lower cover is placed on the top plate of the hood, the upper cover is raised, and the upper cover is moved by the lifting force. A configuration may be adopted in which the engaging portion provided on the wall is detachably engaged (Claim 2).
Here, the planar view shape of the lower cover and the upper cover is a U shape, a substantially U shape, and a non-planar surface such as a curved connection surface between a pair of opposing side surfaces. It includes the connected planar view shape.
[0009]
In the above-described means, the exhaust duct is installed on the top plate of the hood so as to accommodate the exhaust duct that has been piped, and the upper cover is pulled out and engaged with the engaging portion with an ascending force to conceal the exhaust duct.
Then, it is removed when necessary, and the exhaust duct, its connecting portion, and the fan unit on the hood are inspected for maintenance.
[0010]
Further, it is more effective that the top plate of the hood has a lower cover movement preventing means, and the means is a drop recess formed in the top plate of the hood (Claims 3 and 4).
[0011]
In the above means, since the lower end of the lower cover does not move, the lower cover is stable and does not place an excessive load on the attaching / detaching means portion.
[0012]
In addition, the upper cover has an inward flange at the upper edge, and the engaging portion guides the opposing inward flange of the upper cover by the upward force of the upper cover and expands the upper cover using its elasticity. A pair of guide surfaces with inclined surfaces to be deformed to open may be provided, and after guiding by the guide surfaces, the inward flanges may be engaged with the upper edges of the respective guide surfaces.
[0013]
In the above means, the inward flange is lifted along the guide surface by elastically expanding and deforming the upper cover by the guide action of the inclined surface of the guide surface in response to the rising force of the upper cover, and there is an obstacle after passing the guide surface. Since the upper cover is lost, the upper cover is restored and engaged so that the inward flanges facing the upper edges of the respective guide surfaces ride on each other.
The duct cover itself can be pulled out by pulling it out.
[0014]
Further, the guide surface has an attachment portion at one edge thereof, and the attachment portion is provided with the inclined surface so that the inclined surface is positioned on the lower edge side when the attachment portion is attached to the ceiling or the side wall of the room. It is preferable that it is formed on the other two edge portions excluding the edge.
[0015]
In the above means, regardless of whether the engaging portion is attached to the room ceiling or the room side wall, the inclined surface that guides the facing inward flange of the upper cover is positioned on the lower edge side of the guide surface and is guided by the inclined surface when ascending. Then, the upper cover can be elastically deformed in an expanded shape, and when it passes through the guide surface, it is restored and engaged so that the inward flange is hooked on the upper edge of each guide surface.
[0016]
It is optimal that the mounting portion is constituted by a connecting portion that connects a pair of guide surfaces.
[0017]
In the above means, the pair of left and right engaging portions are handled as one member by the connection by the connecting portion.
[0018]
Further, the method is a method of attaching a duct cover according to any one of claims 5 to 7, wherein the lower end of the lower cover is immovably accommodated after the hood is installed in the drop recess formed in the top plate of the hood. Then, the upper cover is raised and the inward flanges facing each other are guided by the pair of guide surfaces attached to the room ceiling or the side wall of the room, and the same cover is elastically expanded and deformed to guide the guide surface. The inward flanges facing the upper edge of the guide surface are engaged with each other (claim 8).
[0019]
In the above-mentioned means, the lower cover is placed in the drop-in recess of the hood top plate after installation so as to be immovable, and the upper cover is lifted to form a pair of guide surfaces attached to the room ceiling or the side wall. The inward flange is guided and restored when it passes through the guide surface, and the inward flange is engaged with the upper edge of the guide surface so that the duct cover is set.
If necessary, the cover itself can be pulled out by pulling it forward.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
FIGS. 1-11 has shown 1st Embodiment of this invention duct cover and its attachment method. Reference numeral 1 is a duct cover, 2 is a hood, 3 is an exhaust duct, and 4 is a blower unit.
[0021]
The duct cover 1 includes a cover body 31 including a lower cover 11 and an upper cover 21 that is fitted in the lower cover 11 and can be moved up and down, and a stopper 41.
[0022]
As shown in FIGS. 4 and 5, etc., the lower cover 11 has a U-shape in plan view with its upper and lower surfaces and the surface facing the chamber side wall c1 open, and inward flanges 11a and 11a are provided at the lower open edges. In addition to being bent, U-shaped folding flanges 11b and 11b are bent inwardly on the open side edge, and the lower end portion including the inward flanges 11a and 11a is formed on the top plate 2a of the hood 2 It is placed in a drop shape in the formed drop recess 22.
[0023]
As shown in FIG. 4 and the like, the upper cover has a U-shape in plan view with the upper and lower surfaces and the surface facing the chamber side wall c1 open like the lower cover 11, and both opposing side surfaces 21b, 21b Inward flanges 21a and 21a are bent at the open upper edges of the two sides, and inward flanges 21c and 21c are also bent at the open side edges of both side surfaces 21b and 21b. 21c and 21c are inserted into the folding flanges 11b and 11b and are guided so as to be movable up and down with respect to the lower cover 11. The upper end of the open side edge and the end of the open upper edge on the open side edge side The inward flanges 21a, 21a, 21c, and 21c are not provided in a predetermined range of the portion, and the flange is a non-flange portion in which the open upper edge and the open side edge are exposed as they are.
[0024]
The stopper 41 has a configuration in which a pair of left and right engaging portions 41a and 41a are connected by a connecting portion 41b.
The pair of engaging portions 41a and 41a are vertically attached to the chamber wall C (the chamber side wall c1 or the chamber ceiling c2) with a gap slightly wider than the interval between the opposed inward flanges 21a and 21a in the upper cover 21. It is a pair of guide surfaces (see FIGS. 3, 4, 5, etc.).
As shown in FIG. 3 to FIG. 5 and the like, the stopper 41 has the connecting portion 41b installed as an attachment portion on one edge of the guide surfaces 41a and 41a across the guide surfaces 41a and 41a. The inclined surfaces 41c are formed on the guide surfaces 41a and 41a.
[0025]
1 and 6, when the connecting portion 41b is attached to the chamber side wall c1, which is a chamber wall, the inclined surface 41c is formed on the edge portion corresponding to the front edge and the lower edge, and also in FIGS. As shown in FIG. 9, when the connecting portion 41b is attached to the room ceiling c2, which is a room wall, it is formed in an L-shaped form as viewed from the side so as to be arranged at the edge portions corresponding to the lower edge and the rear edge, respectively. ing.
Further, each of the inclined surfaces 41c is inclined inwardly toward the lower side, and when the upper cover 21 is raised, the inward flanges 21a and 21a facing the upper cover 21 are made to raise the upward force of the upper cover 21. It has the function of receiving and guiding the cover 21 upward while elastically expanding and deforming outward (see FIGS. 7B and 10B).
[0026]
As shown in FIG. 3, the connecting portion 41 b has a flat U shape in which reinforcing flanges 41 b-1 are bent at both long edges when the connecting portion 41 b is attached to the room ceiling c 2, and the guide surface 41 a A notch 41b-2, which is one step lower, is formed in the front half of the bent portion, which is a continuous portion (FIGS. 2 and 3).
[0027]
When the stopper 41 is attached to the chamber side wall c1, as shown in FIG. 6, the lower cover 11 has an upper and lower positional relationship corresponding to the non-flange portion of the open upper edge. The connecting portion 41b is fixed to the corner portion with a screw 100.
When the stopper 41 is attached to the room ceiling c2, as shown in FIG. 9, the vertical positional relationship in which the rear half of the guide surface 41a corresponds to the non-flange on the open upper edge of the lower cover 11 is shown. Similarly, screws (not shown) are fastened to the corners with the chamber side wall c1.
[0028]
As shown in FIGS. 1 and 2, the hood 2 has a flat box shape with an open bottom, and has four edges below the grease filter 32 detachably engaged with the bottom of the recessed portion 12 that is one step lower. A rectifying plate 42 that secures the suction space 52 is disposed between the rectifying plate 42 and a light receiving box 62 for remote operation is provided behind the rectifying plate 42.
[0029]
Further, the hood 2 has an opening 5 in a predetermined range of the top plate 2 a, the communication port 14 is communicated with the opening 5, the blower unit 4 is installed on the top plate 2 a, and the grease filter 32 The waste gas from which the oil and fat is adsorbed and removed is exhausted from the exhaust duct 3 connected to the blower unit 4 to the outside of the room.
[0030]
The blower unit 4 includes a sirocco fan 54 together with a casing 44 in a unit box 24 that opens the communication port 14 on the lower surface and projects a connection tube 34 of the exhaust duct 3 on the upper surface, and a lid that can be opened on the front surface. It is closed with a body (not shown).
[0031]
As shown in FIGS. 1, 2, and 4, the top plate 2 a of the hood 2 has a U-shape opposite to the plan view in a slightly larger range than the blower unit 4, and the dropping recess 22 as a movement preventing unit. Is recessed.
[0032]
The method of attaching the duct cover configured as described above is that the hood 2 is installed, and after the piping work of the exhaust duct 3, the lower cover of the cover main body 31 is placed in the drop recess 22 formed in the top plate 2a of the hood 2. 11 is dropped and placed so as not to move (FIGS. 4 and 5), the upper cover 21 is lifted, and the lower edges of the pair of guide surfaces 41a and 41a of the stopper 41 attached to the chamber side wall c1. The cover 21 is elastically expanded and deformed while being guided by the rear end portions of the inward flanges 21a, 21a facing each other by the inclined surfaces 41c, 41c formed on the upper surface, and passed through the guide surfaces 41a, 41a. At that time, the upper cover 21 is restored and the inward flanges 21a and 21a are engaged with the upper edges of the guide surfaces 41a and 41a (FIGS. 6, 7A, 7B, and 8C), FIG. ) .
Accordingly, the upper cover 21 is supported in a state in which the amount of overlap with the lower cover 11 is varied and the exhaust duct 3 and the blower unit 4 are concealed from the room at a height ascending to the room ceiling c2.
When the stopper 41 is attached to the ceiling c2, the upper cover 21 is similarly lifted and opposed by inclined surfaces 41c and 41c formed at the lower edges of the pair of guide surfaces 41a and 41a. The same cover 21 is elastically expanded and deformed while guiding the rear end portions of the inward flanges 21a, 21a to raise the same cover 21, and the rear end portions of the flanges 21a, 21a are directed to the guide surfaces 41a, The upper edge portion lowered by the notch 41b-2 of 41a is engaged so as to be hooked (FIGS. 9, 10A, 10B, and 11C).
[0033]
The engaged metal fitting 41 is covered in an invisible manner from the room and does not impair the interior aesthetics.
When the duct cover 1 is removed when necessary, the duct cover 1 may be pulled out from the drop recess 22 while being pulled out.
Further, in order to further strengthen the engaged state, the guide surfaces 41a and 41a and the side surfaces 21b and 21b of the upper cover 21 may be fixed with screws 100 (FIGS. 7C and 10C). ).
Note that the stopper 41 may be attached at a midway height of the chamber side wall c1 to cover at least the exhaust duct 3 piped from the chamber side wall c1 to the outside of the room.
[0034]
The present invention is not limited to the range hood fan in which the blower box is installed on the top plate of the hood, but is equally useful for the duct cover of the range hood fan in which the blower in the hood is built-in. However, the exhaust duct can be used equally well in the room ceiling piping type.
[0035]
【The invention's effect】
As described above, the present invention has a configuration in which the upper cover is fitted or externally fitted to the lower cover so that the upper cover can be moved up and down, the upper cover is lifted, and the upper cover is accommodated by the lifting force. Since the structure for engaging with the engaging portion provided on the wall is employed, the upper cover can be supported at a desired height of raising (drawing) by using the ascending force that raises the upper cover.
[0036]
Further, a hood main body is constituted by a lower cover and an upper cover having a shape in plan view with the upper and lower surfaces and the surface facing the chamber side wall open, and the upper cover is fitted or externally fitted to the lower cover. A configuration in which the lower cover lower end is placed on the top plate of the hood, the upper cover is raised, and the upper cover is detachably engaged with the engaging portion provided on the chamber wall by the lifting force. Since it is removable and can be retrofitted, it is possible to inspect and maintain the exhaust duct, its connecting portion, the blower unit on the top of the hood accommodated in the cover, and the like.
In addition, since the exhaust duct after piping can be retrofitted so as to hide it, it is not necessary to assemble it in parallel with the installation of the hood and the piping construction of the exhaust duct, and the assembly work of the duct cover is very simple.
[0037]
When the top plate of the hood has a lower cover movement preventing means, the lower cover is stabilized, so that the durability is improved without imposing a burden on the engaging portion, and the movement preventing means is the lower cover. In the case of the recessed recess at the lower end, the structure is simple and the duct cover can be stabilized.
[0038]
In addition, the upper cover has an inward flange at the upper edge, and the engaging portion guides the opposing inward flange of the upper cover by the upward force of the upper cover and expands the upper cover using its elasticity. If there is a pair of guide surfaces with inclined surfaces to be deformed to open and the inward flange engages with the upper edge of each guide surface after guiding by the guide surfaces, the upper cover remains elastically deformed. Since the inward flange is not the engagement but is locked to the upper edge of the guide surface, the problem that the upper cover is plastically deformed in a trumpet shape due to long-term engagement with elastic deformation is eliminated. be able to.
[0039]
In addition, the guide surface has an attachment portion on one edge thereof, and when the attachment portion is attached to the room ceiling or the side wall, the attachment surface is provided with the attachment surface so that the inclined surface is positioned on the lower edge side. When the engagement portion is attached to either the room ceiling or the side wall, the inwardly facing inward flange of the upper cover is guided by the inclined surface to guide the guide surface. Each upper edge can be engaged to catch on its inward flange. For this reason, for example, one of the room ceiling and the side wall of the engagement portion to be attached is insufficient in strength, or one of them is molded from a material unsuitable for attachment, etc. Can do.
[0040]
And since the said attachment part connects a pair of guide surface by a connection part and can handle a pair of engaging part as one member, when attaching to a chamber wall, it is easy, and inventory management is also easy.
[0041]
In addition, in the method, the lower cover is placed in a drop-in recess formed on the hood top plate after installation so that it cannot move, and the upper cover is lifted and attached to the room ceiling or the room side wall. The inward flange is guided by the pair of guide surfaces of the engaging part and engaged so that the inward flange is caught on the upper edge of the guide surface. You can pull it out toward you and remove it easily.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a state in which a duct cover is attached using a fastener attached to a chamber side wall.
FIG. 2 is a side sectional view showing a state in which a duct cover is attached using a fastener attached to a room ceiling.
FIG. 3 is an enlarged perspective view of a fastener.
FIG. 4 is an exploded perspective view showing the relationship between a cover body, a hood, and an exhaust duct.
FIG. 5 is a perspective view showing a state before the upper cover is raised.
FIG. 6 shows an essential part in an enlarged perspective view showing a positional relationship between an engaging portion (guide surface) of a stopper attached to the side wall of the chamber and an upper cover.
FIG. 7 is an enlarged front cross-sectional view showing a main part showing a mounting state of the duct cover. (A) shows the state before guiding the inward flange of an upper cover with the inclined surface of an engaging part (guide surface). (B) shows a state where the upper cover is elastically expanded and deformed by the inclined surface to raise the inward flange. (C) shows a state in which the upper cover is restored and the inward flange is hooked on the upper edge of the engaging portion (guide surface).
FIG. 8 is an enlarged perspective view of a main part showing a state in which the upper cover is hooked on the stopper fitting.
FIG. 9 shows an essential part in an enlarged perspective view showing a positional relationship between an engaging portion (guide surface) of a stopper attached to a room ceiling and an upper cover.
FIG. 10 is an enlarged front cross-sectional view showing a main part showing a mounting state of the duct cover. (A) shows the state before guiding the inward flange of an upper cover with the inclined surface of an engaging part (guide surface). (B) shows a state where the upper cover is elastically expanded and deformed by the inclined surface to raise the inward flange. (C) shows a state in which the upper cover is restored and the inward flange is hooked on the upper edge of the engaging portion (guide surface).
FIG. 11 is an enlarged perspective view of a main part showing a state in which the upper cover is hooked on the stopper fitting.
[Explanation of symbols]
1: Duct cover 2: Hood 2a: Top plate 31: Cover body C: Room wall c2: Room ceiling c1: Room side wall 41a: Engagement part 11: Lower cover 41c: Inclined surface 21: Upper cover 22: Movement prevention means ( Recessed recess)
21c: Inward flange 41: Stopper 41b: Connection part

Claims (8)

A cover mounting structure for the exhaust duct exposed on the top plate of the hood,
The upper cover can be moved up and down by fitting the upper cover with the inner cover or the outer cover, and the upper cover is lifted and the opposing side surface of the upper cover is elastically expanded by the lifting force. A duct cover mounting structure, wherein the upper cover is engaged with an engaging portion provided on a chamber wall by using an opening deformation and utilizing the restoring force . A cover of the exhaust duct exposed on the top plate of the hood, which is composed of a lower cover and an upper cover having a shape in plan view that opens the upper and lower surfaces and the surface facing the chamber side wall. An upper cover is fitted inside or outside so that the upper cover can be moved up and down, the lower end of the lower cover is placed on the top plate of the hood, the upper cover is raised, and the upper cover is opposed to the upper cover. A duct cover mounting structure characterized in that a side surface is elastically expanded and deformed, and the upper cover is detachably engaged with an engaging portion provided on a chamber wall by using a restoring force thereof . The duct cover mounting structure according to claim 2, wherein the top plate of the hood has means for preventing movement of the lower cover. 4. The duct cover mounting structure according to claim 3, wherein the movement preventing means is a drop recess formed in the top plate of the hood, and the lower end of the lower cover is placed in the drop recess. The upper cover has an inward flange at the upper edge, and the engaging portion guides the inward facing flange of the upper cover with the upward force of the upper cover, and the upper cover is expanded and deformed by utilizing its elasticity. The duct according to any one of claims 2 to 4, wherein the duct has a pair of inclined guide surfaces, and the inward flange engages with the upper edge of each guide surface after guiding by the guide surfaces. Cover mounting structure . The guide surface has an attachment portion at one edge thereof, and when the attachment portion is attached to the room ceiling or the side wall of the room, the inclined surface is provided with the attachment portion so that the inclined surface is positioned on the lower edge side. The duct cover mounting structure according to claim 5, wherein the duct cover mounting structure is formed on the other two edge portions excluding. The duct cover mounting structure according to claim 6, wherein the mounting portion includes a connecting portion that communicates a pair of guide surfaces. A mounting method using the duct cover mounting structure according to any one of claims 5 to 7, wherein the lower end of the lower cover is placed in an immovable manner after the hood is installed in a drop recess formed in the top plate of the hood. The upper cover is raised and the inwardly facing flanges are guided by the pair of guide surfaces attached to the room ceiling or the side wall of the room, and the same cover is elastically expanded and deformed to guide the guide surface. A duct cover mounting method, wherein each of the inward flanges facing the upper edge of the guide surface is engaged later.

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