JP4402986B2 - Ceiling vents - Google Patents

Description

  The present invention relates to a ceiling ventilator used by being housed in a ventilation passage leading to the back of a ceiling such as an eaves ceiling, and in particular, can be easily and easily installed in the ventilation passage and is incombustible. The present invention relates to a ceiling ventilating material that can be provided with a porous expandable material.

  As this type of ceiling vent hardware, for example, Patent Document 1 described below is known. The invention of Patent Document 1 is a hardware having a structure in which a plurality of slit holes for ventilation are provided on a horizontal upper plate of a hardware having a substantially hat-shaped cross-section with side plates hanging from both left and right ends of the horizontal upper plate. When this hardware is used as a fireproof ventilation metal, a non-combustible volume expansion material is stuck and fixed to the inner surfaces of both side plates of the hardware.

  Also, as shown in Patent Document 2 described later, an eaves ceiling ventilation edge member that is inserted into a ceiling ventilation passage is also known. According to the present invention, a large number of expansion members are attached to a predetermined position of a U-shaped hardware to make a fireproof hardware, and a groove into which an eaves ceiling plate can be fitted is formed outside the hardware, and the eaves ceiling plate is formed in the groove. The hardware is configured to be attached to the eaves ceiling by inserting the end edges of the eaves. In addition, the gap formed between the small edge surface of the eaves ceiling plate and the depth of the groove is also filled with an expansion material.

  Furthermore, as shown in Patent Document 3 to be described later, a ventilating hardware used by being fitted and fixed in a ventilation passage formed by an eaves ceiling and an outer wall has also been known. A structure in which this ventilation hardware is suspended from two inclined upright surfaces that are substantially parallel to each other with a predetermined distance from the ceiling surface having a plurality of slit holes, and a horizontal parting portion is continuously provided outside the lower end of the upright surface. Ventilation hardware.

JP-A-8-027941 JP 2003-027652 A JP 2002-188224 A

  However, in the above-mentioned invention of Patent Document 1, in order to fix the hat-shaped hardware inserted in the ventilation air passage of the ceiling to the ventilation air passage, both lower ends of the hardware are supported by the support arms, and This support arm has to be attached and fixed to the ceiling surface with a screw, and in addition, a cover must be covered outside the support arm in order to make this screw invisible, resulting in a complicated structure. There is also a problem that a non-combustible volume expansion material must be adhered and fixed to the inner surface of the hardware or the standing surface of the support arm inside the hardware.

  Moreover, since the invention described in Patent Document 2 has to insert the edge of the ceiling plate into the groove formed outside the U-shaped hardware, it is difficult to install the ceiling plate and the U-shaped hardware. There was a bad problem. In addition to mounting a plurality of expansion members at predetermined positions in the U-shaped hardware, the gap formed between the groove and the small edge surface of the ceiling plate must be filled with expansion members, and the structure is complicated and expands. There was also a problem that the amount of members used was extremely large.

  Furthermore, in the invention described in Patent Document 3, two inclined upstanding surfaces are suspended substantially parallel to each other at a predetermined distance from the ceiling surface, so that the structure of the hardware is complicated and difficult to manufacture. there were. In addition, since there are many slit holes on the ceiling surface, a horizontal mounting piece is formed on the side of the ceiling surface, and the horizontal mounting piece is screwed to the ceiling base to attach the hardware to the ceiling base. After installation, there was a problem that the ceiling panel had to be stretched on the ceiling surface.

  The present invention is a completely new invention developed in view of many problems of the prior art described in Patent Documents 1 to 3, and is particularly a hat-shaped horizontal upper plate fitted in a ventilation passage of a ceiling. Can be directly attached to the ceiling base material, and the outer wall of the ceiling ventilation passage and the small edge of the ceiling plate can be covered with a gutter provided outside the lower end of both side plates. Are bent outwardly to form an upper inclined surface and a lower inclined surface, and a plurality of ventilation slit holes are provided in parallel on the upper inclined surface, so that the upper side of the hardware is placed on the back of the ceiling. It provides technology that allows ventilation.

  The ceiling vent hardware according to the present invention is a technology that has fundamentally improved the above-mentioned conventional problems, and the gist of the first invention is that the side plates are continuously suspended from the left and right ends of the horizontal upper plate, and In a ceiling vent with a hat-shaped cross-section with a horizontal plate on the outer side of the lower end of the side plate, the substantially central part of each side plate is bent outwardly and inclined upward to the side plate. The ceiling ventilator is characterized in that a surface and a lower inclined surface are formed, and a plurality of ventilation slit holes are provided in parallel in the longitudinal direction on the upper inclined surface.

  In the first invention of the present application described above, substantially the central part of the both side plates of the substantially hat-shaped hardware is bent into a shape to form an upper inclined surface and a lower inclined surface, and the upper inclined surface is ventilated. Since the slit hole is provided, it can be ventilated from both sides above the hardware.

  Since the horizontal upper plate is not provided with a slit for ventilation, the horizontal upper plate can be directly attached to and fixed to the ceiling base material when it is inserted into the ventilation passage of the hardware. In addition, since a bottom plate is provided outside the lower ends of the both side plates, when the hardware is inserted into the ventilation passage of the ceiling, the small plate surface of the ceiling plate and the outer periphery of the ventilation passage are automatically provided by the ceiling plate. Can be coated.

  According to a second aspect of the ceiling ventilator of the present invention, there is provided an incombustible volume expansion material that is provided with an upright projecting portion at the connecting portion of the both side plates and the side plate and that expands by heat. A ceiling vent according to the first aspect of the present invention, wherein the air vent is in contact with the inner surface of the lower inclined surface of the plate, and both end edges of the incombustible volume expansion material are sandwiched between the raised portion and the bent portion of the side plate, respectively. It is a hardware.

  In the above-mentioned second invention, since the upright portion is provided in the connecting portion between the both side plates of the hardware and the saddle plate, the incombustible volume expansion material in contact with the inner surface of the lower inclined surface of the both side plates is used as the upright portion. And can be automatically mounted and fixed by being sandwiched between the bent portion of the side plate.

  In the hardware of the present invention, since the slits for ventilation are provided on the upper inclined surfaces of the both side plates, the non-combustible volume expansion material foamed at the time of fire is passed through the slits for ventilation. Thus, the gap formed between the upper part of the hardware and the end edge surface of the ceiling plate can be completely closed by the expanded noncombustible volume expansion material. Therefore, it is possible to completely prevent the hardware from being deformed in the event of a fire or the passage of a flame or hot air between the outer surface of the hardware and the end edge surface of the ceiling plate.

The gist of the third invention of the ceiling ventilator according to the present invention is that the upright portion is configured to stand upright obliquely so that the head of the upright portion faces the side plate where the upright portion is connected. It is a ventilating metal fitting for ceiling of the 2nd invention characterized by the above.

  In the above-mentioned third invention, the head of the upright portion protruding from the connecting portion between the both side plates of the hardware and the saddle plate is inclined in the direction of the side plate, so that it is brought into contact with the inner surface of the lower inclined surface. Further, the end portion of the noncombustible volume expansion material can be more reliably held by the upright portion.

  The ceiling vent hardware according to the present invention has the above-described structure and operation, so that it can be easily inserted as it is into a ventilation passage provided in a ceiling such as an eaves ceiling, and the horizontal upper plate of the hardware is mounted. It can be directly attached to the ceiling base material and fixed with screws. And the outer peripheral part of a ventilation channel | path and the small edge surface of a ceiling board can be coat | covered with a good appearance with the girder connected to the lower end of the both sides board of a hardware.

  Therefore, when attaching hardware to the ventilation passage of the ceiling, in addition to the hardware, support arms, covers or horizontal mounting pieces for attaching the hardware to the ceiling base material, or the edge edge of the end of the ceiling plate It is unnecessary to provide a groove that can be inserted outside the hardware.

  In addition, when an upright part is projected from the joint part of the metal side plate and the saddle plate, the incombustible volume expansion material that is in contact with the inner surface of the lower inclined surface is automatically moved by the upright part and the bent part of the side plate. Can be pinched and fixed.

  Further, when the non-combustible volume expansion material in the hardware is expanded, the non-combustible volume expansion material is expanded from the ventilation slit hole provided on the upper inclined surface of the side plate, thereby the hardware and the small edge surface of the ceiling plate. The gap is completely closed, and even if the hardware is deformed by heat, the expanded non-combustible volume expansion material closes the gap, so it is possible to completely prevent the flame and hot air from flowing out through the gap. I can do it.

  FIG. 1 is a perspective view of a ceiling vent fitting according to the present invention, FIG. 2 is a longitudinal sectional view of the ceiling vent fitting of FIG. 1, and FIG. 4 is an explanatory view showing the mounting position of the ceiling vent fitting, FIG. 4 is an explanatory view showing a state where the ceiling vent fitting is incorporated in the eaves ceiling, and FIG. It is.

  1 and 2, reference numeral 1 denotes a ceiling metal fitting according to the present invention, which is a metal fitting inserted into a ceiling ventilation passage such as an eaves ceiling as will be described later. The ceiling vent hardware 1 is generally composed of a horizontal upper plate 2, a side plate 3 that hangs down on both left and right ends of the horizontal upper plate 2, and a gutter plate 4 that is horizontally connected to the outside of the lower end of the side plate 3. The cross section is substantially a hat shape. A curled portion 4 a is provided at the leading edge of the saddle plate 4.

  The side plates 3 on both sides are bent outwardly at a substantially central portion 3a to divide the side plates 3 into an upper inclined surface 3b and a lower inclined surface 3c. The upper inclined surface 3b is provided with a plurality of ventilation slit holes 5 arranged in parallel in the longitudinal direction. Mounting holes 6 are provided at both ends of the horizontal upper plate 2.

  A standing portion 7 having a predetermined height is erected inward of the ceiling ventilating hardware 1 by bending the panel at the connecting portion between the side plates 3 on both sides and the gutter plate 4 connected to the side plates 3. Projected. The heads of the standing portions 7 are inclined in the direction of the side plates 3, respectively.

  8 is a noncombustible volume expansion material which expands by high heat at the time of a fire, and is also used in the above-mentioned Patent Document 1, etc., and is a publicly known article. In the present invention, the nonflammable volume expansion material 8 in the form of a square bar is brought into contact with the inner surface of the lower inclined surface 3c of the side plate 3, and both end edges of the nonflammable volume expansion material 8 are the upright portions 7. The nonflammable volume expansion material 8 is automatically attached in a stable state to the inner surface of the lower inclined surface 3c.

In the use of the ceiling vent hardware according to the present invention, for example, as shown in FIGS. 3 and 4, the ceiling vent fitting 1 is passed to the attic provided between the left and right eave ceiling plates 10 of the eave ceiling 9. Inserted into the ventilation passage 11, the horizontal upper plate 2 of the ventilator 1 for the ceiling is brought into contact with the ceiling base 12 such as the field edge of the eaves ceiling 9, and the mounting screw 13 is inserted into the mounting hole 6 of the horizontal upper plate 2. The mounting screw 13 is connected to the ceiling base 12
It is possible to attach and fix the ceiling vent 1 to the eaves ceiling 9 by screwing into the eaves ceiling 9. In the figure, 14 is a nose cover, 15 is a nose cover base, and 16 is an outer wall material.

  As described above, the ceiling vent hardware 1 according to the present invention is not provided with the ventilation slits in the horizontal upper plate 2, so that the ceiling vent 1 is in direct contact with the ceiling base 12 and the ceiling ventilation is provided. The ceiling vent hardware 1 can be mounted and fixed very easily and with good appearance from the inside of the hardware 1 with the mounting screw 13.

  In addition, since a side plate 4 is provided outside the lower end of the side plate 3, the outer side of the ventilation passage 11 and the small surface of the eaves ceiling plate 10 can be automatically hidden by this side plate 4. Further, the ventilation of the back of the hut can be smoothly ventilated from the ventilation slit holes 5 of the upper inclined surface 3 b provided on both upper sides of the ceiling ventilating hardware 1. Moreover, since the side plates 3 of the ceiling ventilating hardware 1 are bent and bulged in the central portion 3a, the side plates 3 are surely brought into contact with or close to the small edge surfaces of the eaves ceiling plates 10 on both sides. You can also do it.

  As described above, when the non-combustible volume expansion material 8 is attached to the inside of the ceiling ventilator 1, as illustrated in FIG. It can be expanded by a flame or a high temperature, and the interior of the ceiling ventilator 1 and the ventilation passage 11 can be completely filled and closed.

  In particular, the ceiling vent metal 1 according to the present invention has the ventilation slit holes 5 in the upper inclined surfaces 3b on both sides as described above. The portion is bulged outwardly from the ceiling vent 1 through the ventilation slit hole 5, and the ventilation passage 11 can be completely closed by the bulged noncombustible volume expansion material 8. Therefore, even when the ceiling ventilator 1 is temporarily deformed by heat, the ventilation passage 11 can be closed by the nonflammable volume expansion material 8 at all.

  The ceiling ventilating hardware 1 according to the present invention can be widely used not only for the eaves ceiling of a house but also for a ventilation part such as an indoor ceiling. Moreover, it can be used not only for ordinary houses but also for ventilation places such as factories and warehouses.

It is a perspective view of the ventilation metal fitting for ceilings concerning the present invention. It is a longitudinal cross-sectional view of the ceiling metal fitting for FIG. It is explanatory drawing which shows the attachment position of the ventilation metal fitting for ceilings of FIG. It is explanatory drawing of the state which integrated the ventilation metal fitting for ceilings in the eaves ceiling. It is explanatory drawing which shows the state which the nonflammable volume expansion material foamed at the time of a flame.

DESCRIPTION OF SYMBOLS 1 ... Ceiling metal fitting 2 ... Horizontal upper board 3 ... Side board 3a ... Center part 3b ... Upper inclined surface 3c ... Lower inclined surface 4 ... Gutter plate 4a ... Curled part 5 ・ ・ ・ Ventilation slit hole 6 ・ ・ ・ Mounting hole 7 ・ ・ ・ Standing part 8 ・ ・ ・ Non-combustible volume expansion material 9 ・ ・ ・ Eave ceiling 10 ・ ・ ・ Eave ceiling plate 11 ・ ・ ・ Ventilation passage 12 ... Ceiling base 13 ... Mounting screw 14 ... Nasal concealment 15 ... Nasal concealment base 16 ... Outer wall material

Claims (3)

In the ceiling vent fitting with a substantially hat-shaped cross section in which side plates are continuously suspended from the left and right ends of the horizontal upper plate, and a vertical plate is horizontally provided outside the lower end of the side plate, the central portion of the both side plates. Each of which is bent outwardly to form an upper inclined surface and a lower inclined surface on the side plate, and a plurality of ventilation slit holes are provided in parallel in the longitudinal direction on the upper inclined surface. Ventilated ceiling fittings. A standing portion is provided on the connecting portion between the both side plates and the saddle plate, and a non-combustible volume expansion material that expands by heat is brought into contact with the inner surface of the lower inclined surface of the both side plates. The ceiling metal fitting according to claim 1, wherein both end edges of the volume expansion member are sandwiched between the upright portion and the bent portion of the side plate. 3. The ceiling ventilator according to claim 2, wherein the upright portion is configured to protrude obliquely so that the head of the upright portion faces the side plate where the upright portion is connected .

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