JP2014208945A - Soundproof structure of shutter case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof structure of a shutter case, which can reduce a raindrop noise and which can inhibit fire spread from being caused by a vibration damper in a case of fire.SOLUTION: A soundproof structure of a shutter case includes: a winding shaft 13 that has both ends supported above a building opening of a building exterior wall 23 provided with the building opening and around which a curtain part 19 for opening/closing the building opening is wound; a metal case 29 that is fixed to the building exterior wall 23 and formed like a box for housing the winding shaft 13 together with the wound curtain part 19; and a sheet-like vibration damper 15 that is attached along the winding shaft 13 at a tip part 55 of a top plate undersurface, on a tip side with respect to the winding shaft 13, of a top plate 37 of a storage part.

Description

  The present invention relates to a soundproof structure for a shutter case.

  The shutter device includes a winding shaft (winding shaft) and a storage portion (shutter case) (see Patent Document 1). The winding shaft is supported at both ends above the building opening on the outer wall of the building where the building opening is provided, has a length equal to or greater than the opening width of the building opening, and opens and closes the building opening. The part is wound. The storage unit is fixed to the outer wall of the building and is formed in a metal box shape that stores the winding shaft together with the wound curtain unit. The storage portion is generally formed using a steel plate having a thickness of about 0.3 mm. The curtain portion is configured by connecting a large number of slats in the vertical direction so as to be rotated by a predetermined angle via the connecting portion. Because the slat is made of a horizontally long strip-shaped steel plate, the contact sound between the take-up shaft and the slat of the take-up device, the contact sound when the slat and the slat overlap, and the vibration propagation during rotation of the take-up shaft with opening and closing of the shutter Noise is generated due to the sound from the shutter box.

  Therefore, a laminate comprising a damping sheet made of an organic polymer material and a sheet-like restraining member bonded to one side of the damping sheet is attached to the four inner surfaces of the square cylindrical shutter box on the damping sheet side. A combined shutter soundproofing device has been proposed (see Patent Document 2). According to the shutter soundproofing device, the vibration damping sheet having vibration damping performance absorbs vibration generated during the operation of the shutter, has high soundproofing performance, and exhibits a soundproofing effect in a wide range from low frequency to high frequency. be able to.

JP 2012-233298 A JP 2004-92194 A

  However, the above-described shutter soundproofing device has a structure for preventing noise generated by the shutter device itself, and does not deal with sounds received from outside, particularly raindrops. In a shutter case arranged at the upper part of an opening of a building such as a house, raindrops fall from the building eaves, hit the top plate of the storage unit, and generate sound. Since the storage portion is in the shape of a metal box, it may be uncomfortable if an impact sound is heard inside and propagates into the room. On the other hand, the damping material is made of a combustible material as a material, and if it is easily provided in the storage portion, there is a risk of spreading fire in the event of a fire. That is, during a fire on the outdoor side, the damping material is melted and softened by the heat from the flame and flows down. Or the adhesive which has affixed the damping material melt | dissolves, and there exists a problem that a damping material falls with a sheet form. The melted damping material or the like may flow down along the shutter curtain and flow into the room and catch fire. In addition, the damping material that has fallen in the form of a sheet may start to melt and ignite. In this way, providing a damping material easily means that the damping material may fall in an ignited state, ignite when it falls, or ignite by heating, etc. May cause fire spread.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a soundproof structure of a shutter case that can reduce dripping noise and can suppress the spread of fire due to a vibration damping material during a fire.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The soundproof structure for a shutter case according to claim 1 of the present invention is a curtain for opening and closing the building opening 21 while both ends are supported above the building opening 21 of the building outer wall 23 provided with the building opening 21. A winding shaft 13 around which the portion 19 is wound;
A metal storage portion 29 formed in a box shape for storing the winding shaft 13 together with the curtain portion 19 fixed and wound on the building outer wall 23;
A sheet-like damping material 15 attached along the winding shaft 13 at the top plate lower surface distal end portion 55 on the top side of the winding shaft 13 in the top plate 37 of the storage unit 29;
It is characterized by comprising.

  In the soundproof structure of the shutter case, the damping material 15 is attached to the lower surface of the top plate of the storage unit 29, so that raindrops falling from the eaves of the building or the like fall on the top plate 37 of the storage unit 29. The vibration energy generated at that time is converted into heat and other energy by the damping material 15, and the impact sound is suppressed inside the storage portion 29. In addition, since the damping material 15 is disposed at the top plate lower end 55 on the tip side of the winding shaft 13, the damping material 15 falls to the outdoor side of the winding shaft 13 even if melted by heat at the time of fire. And can prevent the indoor flow. In this case, by providing a discharge hole in the lower plate 41 of the storage unit 29, the melted vibration damping material can be discharged from the storage unit 29 to the outside. It can be difficult.

The soundproof structure of the shutter case according to claim 2 of the present invention is a curtain that supports both ends of the building outer wall 23 provided with the building opening 21 above the building opening 21 and opens and closes the building opening 21. A winding shaft 13 around which the portion 19 is wound;
A metal storage portion 61 formed in a box shape for storing the winding shaft 13 together with the curtain portion 19 fixed and wound on the building outer wall 23;
A sheet-like damping material 15 attached along the winding shaft 13 to the lower surface of the top plate of the storage portion 61;
A fireproof reinforcing plate 57 which is fixed to the storage portion 61 and is disposed along the vibration damping material 15 below the vibration damping material 15 and inclined forward and downward;
It is characterized by comprising.

  In the soundproof structure of the shutter case, the damping material 15 is attached to the lower surface of the top plate of the storage unit 61, so that raindrops that fall from the eaves of the building fall on the top plate 37 of the storage unit 61. The vibration energy generated at that time is converted into heat or other energy by the damping material 15, and the impact sound is suppressed inside the housing 61. Further, since the fireproof reinforcing plate 57 is disposed below the vibration damping material 15, even if the adhesive melts due to heat from the fire and the vibration damping material 15 falls, the vibration damping material 15 is received by the fireproof reinforcing plate 57. Will be. Further, since the fireproof reinforcing plate 57 is inclined forward and downward, the melt damping material melted by the heat from the fire is caused by the forward downward inclination of the fireproof reinforcing plate 57 and the outdoor side of the storage unit 61 opposite to the indoor side. Is dropped.

The soundproof structure of the shutter case according to claim 3 of the present invention is the soundproof structure of the shutter case according to claim 2,
A hanging plate portion 59 is formed on the front end edge 65 of the fireproof reinforcing plate 57 along the back side of the front plate 39 of the storage portion 61.
A flow-down gap is formed between the front plate 39 and the drooping plate portion 59.

  In the soundproof structure of the shutter case, the melt damping material that has flowed to the front edge 65 of the fireproof reinforcing plate 57 surely falls directly below the drooping plate portion 59, and flows backward through the fireproof reinforcing plate 57 in the indoor direction. Can be prevented.

The soundproof structure of the shutter case according to claim 4 of the present invention is a curtain that opens and closes the building opening 21 while both ends are supported above the building opening 21 of the building outer wall 23 provided with the building opening 21. A winding shaft 13 around which the portion 19 is wound;
A metal storage portion 71 formed in a box shape for storing the winding shaft 13 together with the curtain portion 19 fixed and wound on the building outer wall 23;
A fireproof reinforcing top plate 67 fixed along the winding shaft 13 on the top surface of the top plate of the storage unit;
A sheet-like damping material 15 to be attached to the lower surface of the fireproof reinforcing top plate;
It is characterized by comprising.

  In the soundproof structure of the shutter case, the fireproof reinforcement top plate 67 with the damping material 15 attached to the lower surface of the fireproof reinforcement top plate is fixed on the top plate 37 of the storage unit 71 and falls from the eaves of the building or the like. Even if raindrops fall on the fireproof reinforcing top plate 67, the vibration energy generated at that time is converted into heat and other energy by the damping material 15, and the sound of impact sound inside the storage portion 71 is suppressed. At this time, since the vibration damping material 15 is provided between the fireproof reinforcing top plate 67 and the storage portion 71, the rain sound generated in the fireproof reinforcing top plate 67 is difficult to propagate to the storage portion 71. Further, even if the damping material 15 is melted by heat from the fire, the molten damping material is dropped to the outdoor side of the storage unit 71 by the top plate 37 of the storage unit 71.

The soundproof structure of the shutter case according to claim 5 of the present invention is the soundproof structure according to claim 4,
A hanging plate portion 69 is formed on the front end edge 73 of the fireproof reinforcing top plate 67 along the front side of the front plate 39 of the storage portion 71.

  In the soundproof structure of the shutter case, when raindrops falling on the fireproof reinforcing top plate 67 reach the front end edge 73, the raindrops fall directly below the drooping plate portion 69 hanging from the front end edge 73, and the raindrop falls directly on the front plate 39 of the storage unit. Drops away from.

The soundproof structure of the shutter case according to claim 6 of the present invention is the soundproof structure of the shutter case according to any one of claims 1 to 5,
The plurality of vibration damping materials 15 are intermittently attached along the winding shaft 13.

  In the soundproof structure of the shutter case, the vibration damping material 15 provided along the longitudinal direction of the storage portions 29, 61, 71 is divided into a plurality of portions and arranged at a predetermined interval, whereby the storage portions 29, Compared with the case where the damping material 15 is provided over the entire length of 61 and 71, the amount of damping material 15 can be reduced.

  According to the soundproof structure of the shutter case according to the first aspect of the present invention, it is possible to reduce dripping sound and to suppress the spread of fire due to the vibration damping material at the time of fire.

  According to the soundproof structure of the shutter case according to claim 2 of the present invention, it is possible to reduce dripping sound, to suppress the spread of fire due to the vibration damping material at the time of fire, and the adhesive for adhering the vibration damping material is caused by heat from the fire. Even if the material is melted and softened and the damping material is peeled off, it can be prevented from falling indoors. Moreover, even if the damping material is melted by a fire, it can be prevented from drooping indoors.

  According to the soundproof structure of the shutter case according to the third aspect of the present invention, the damping material melted by the fire can be dropped to the front of the storage portion without being attached to the curtain portion.

  According to the soundproof structure of the shutter case according to claim 4 of the present invention, it is possible to reduce dripping sound, to suppress the spread of fire due to the damping material at the time of fire, and to provide a fireproof reinforcing top plate to which the dripping hits and the top plate of the storage unit Since it is cut off by the damping material, it is difficult for the sound to sound and the dripping sound is difficult to be transmitted.

  According to the soundproof structure of the shutter case according to claim 5 of the present invention, the raindrop that has fallen on the fireproof reinforcing top plate is dropped without contacting the front plate of the storage unit, and the aesthetic appearance of the storage unit is maintained for a long time. Can do.

  According to the soundproof structure of the shutter case according to claim 6 of the present invention, the material cost of the damping material can be reduced, and the shutter case can be manufactured at low cost.

It is an appearance perspective view of a shutter device provided with a soundproof structure concerning a 1st embodiment of the present invention. It is a sectional side view of the shutter apparatus shown in FIG. It is a top view of the accommodating part shown in FIG. It is a sectional side view of the soundproof structure which concerns on the modification of 1st Embodiment. It is a sectional side view of a storage part provided with the soundproof structure concerning a 2nd embodiment of the present invention. It is a sectional side view of the soundproof structure which concerns on the modification by which the drooping board part was provided in the fireproof reinforcement board of 2nd Embodiment. It is a sectional side view of the soundproof structure which concerns on the modification of the shape from which the accommodating part of 2nd Embodiment differs. It is a sectional side view of the soundproof structure which concerns on the modification by which the drooping board part was provided in the fireproof reinforcement board of FIG. It is a sectional side view of the soundproof structure which concerns on 3rd Embodiment of this invention. (A) is a side sectional view of a soundproof structure according to a modification in which a hanging plate portion is provided on the fireproof reinforcing top plate of FIG. 9, and (b) is a modification in which a hanging plate portion larger than (a) is provided. It is a sectional side view of the soundproof structure.

Embodiments according to the present invention will be described below with reference to the drawings.
1 is an external perspective view of a shutter device having a soundproof structure according to the first embodiment of the present invention, FIG. 2 is a side sectional view of the shutter device shown in FIG. 1, and FIG. 3 is a plan view of a storage portion shown in FIG. 4 and 4 are side sectional views of a soundproof structure according to a modification of the first embodiment.
The soundproof structure of the shutter case according to the first embodiment is used in the shutter device 11 shown in FIG. The shutter device 11 includes a winding shaft 13, a storage unit, and a damping material 15. The shutter device 11 is attached to, for example, the outside of a sash window 17 constituting a window portion of a house, and opens and closes a building opening 21 using a curtain portion 19.

  Both ends of the winding shaft 13 are supported above the building opening 21 of the building outer wall 23 provided with the building opening 21. The winding shaft 13 has a length equal to or greater than the opening width length of the building opening 21. A metal wheel 25 is fixed to the winding shaft 13, and the curtain portion 19 is wound around the outer periphery of the winding shaft 13. That is, the winding shaft 13 is worn (wound) on the outside by the curtain portion 19 that opens and closes the building opening 21. The wheel 25 may be provided with a resin cover 27 for preventing a squeak noise due to contact with the curtain portion 19.

  In the shutter device 11, a case 29, which is a storage unit, is attached above the building opening 21. The case 29 is fixed to the building outer wall 23 and is formed in a metal box shape that accommodates the winding shaft 13 together with the wound curtain portion 19. In the shutter device 11, a pair of metal side brackets 31 are fixed to a building frame. A bearing fitting 33 is fixed to the inside of each side bracket 31 so as to face each other, and the bearing fitting 33 supports both ends of the winding shaft 13. A wheel 25 is rotatably supported on the take-up shaft 13, and the wheel 25 fixes a suspension base that is a rear end of the curtain portion 19 in the extending direction.

  A side decorative plate 35 made of aluminum alloy or resin is provided outside the side bracket 31. An aluminum alloy top plate 37 is bridged between the pair of side decorative plates 35. The top plate 37 is a long plate that is long in the left-right direction, and has a substantially L-shaped cross section in the direction orthogonal to the longitudinal direction. As for the top plate 37, the rear edge of the top plate is fixed to the building frame with a fixing screw or the like. A pair of screw fixing portions are formed at both ends of the top plate. The top plate 37 is fixed to the side decorative plate 35 by fastening a fixing screw (not shown) penetrating from the outside of the side decorative plate 35 to the screw fixing portion. The front opening surrounded by the side decorative plate 35 and the top plate 37 is closed by a steel front plate 39, and the case 29 is defined. The lower surface of the case 29 is further closed by a steel lower plate 41. In the present embodiment, the boundary between the top plate 37 and the front plate 39 is formed as a chamfered portion 43 that is inclined forward and downward with the corners removed.

  On the left and right sides of the case 29, a pair of aluminum alloy guide rails 45 is fixed to the building frame and hangs down. The rail lower ends of the pair of suspended guide rails 45 are connected by an aluminum alloy lower frame 47. The lower frame 47 abuts on the upper end of the trunk edge 49 that is the lower edge portion of the building opening 21. The surface of the trunk edge 49 is covered with an outer wall finishing material. Therefore, the connection part of each rail lower end part and the lower frame 47 becomes a corner part as shown in FIG.

  The curtain portion 19 may be a general curtain portion 19 in which a plurality of aluminum or steel slats 51 are connected, a panel material or a resin sheet-like curtain portion 19, or a combination of these combined. it can. The curtain part 19 has a draining slat 53 at the tip of the feeding direction, that is, at the lower end when fully closed.

  Incidentally, the top plate 37 of the case 29 is provided with a sheet-like damping material 15. As shown in FIG. 2, the damping material 15 is located on the outdoor side tip side of the top side of the top plate 37 and on the top side of the top plate lower surface of the top side of the outdoor side of the winding shaft 13. At 55, it is attached along the winding shaft 13. However, the damping material 15 is located on the indoor side with respect to the outdoor-side tip of the top plate 37 and on the indoor-side tip side with respect to the winding shaft 13 in a range smaller than the attached damping material 15. Even if it is affixed to the top plate lower surface tip portion 55, it may be configured in this way as long as there is no problem in use. In the illustrated example, the pasting range is just before the chamfered portion 43, but the damping material 15 may be pasted including the chamfered portion 43. The vibration damping material 15 is attached to the top plate lower surface front end portion 55 on the outdoor side tip side of the top plate 37 and on the outdoor side tip side with respect to the winding shaft 13, thereby preventing the damping material 15 from drooping indoors. It is more preferable from the viewpoint of. Although the top plate 37 may be horizontal, it is preferable that the top plate 37 is inclined downward from the building outer wall 23 toward the outdoor side as shown in FIG. As the damping material 15, a butyl rubber-based sheet material or an ethylene-propylene-based rubber material having a thickness of about 1 mm can be used. The damping material 15 is preferably a sticking type damping material. The sticking type vibration damping material includes a constraining layer and an adhesive layer. The constraining layer is a middle layer composed of a highly elastic constraining layer made of aluminum foil, a hot-melt adhesive containing EPDM rubber, which is a non-thermoplastic resin, and a vulcanized rubber blend containing a reinforcing agent such as glass fiber. A constraining layer. The pressure-sensitive adhesive layer includes butyl rubber and polybutene, and includes a low-elastic pressure-sensitive adhesive layer that has adhesiveness to the top plate 37 that is an adherend.

  As shown in FIG. 3, it is preferable that a plurality of damping materials 15 are intermittently attached along the winding shaft 13. That is, the damping material 15 may be continuously formed and stuck in a band shape over the entire length of the left and right with respect to the opening width length, but may be a plurality of strips in the frontage width direction. Good. In this case, three damping materials 15 having a length of about 60 cm are attached to an opening width length of about 3 m, for example. In addition, when the damping material 15 is intermittent, in order to exhibit the function of the damping material 15, it is shorter than each length of the adjacent damping material 15 in the opening width direction (for example, half or less). preferable.

  In the above configuration, the case where the chamfered portion 43 is formed at the boundary between the top plate 37 and the front plate 39 of the case 29 has been described. However, as shown in FIG. A structure may be employed in which the front plate 39 is connected with the corners remaining. In this case, the damping material 15 is pasted up to the top plate lower surface front end portion 55 which hits the front plate 39.

Next, the operation of the soundproof structure according to the first embodiment will be described.
In the soundproof structure according to the first embodiment, the damping material 15 is attached to the lower surface of the top plate of the case 29. For this reason, even if raindrops that fall from the eaves of the building fall on the top plate 37 of the case 29, the vibration energy generated at that time is converted into heat and other energy by the damping material 15, and the inside of the case 29 The sound of the impact sound at is suppressed.

  Further, since the damping material 15 is disposed on the outdoor-side distal end side of the indoor-side distal end portion of the top plate 37 and on the top-plate lower surface distal end portion 55 on the outdoor-side distal end side of the winding shaft 13, Even if it melts due to heat at the time of a fire, it falls to the outdoor side from the take-up shaft 13, so that it can be prevented from flowing indoors. Here, if the top plate 37 is inclined downward from the building outer wall 23 toward the outdoor side, it is possible to prevent the indoor flow from falling down. In this case, by providing a discharge hole in the lower plate 41 of the case 29, the melted vibration damping material can be discharged from the case 29 to the outside, and the molten vibration damping material can be more difficult to enter indoors. . The discharge hole is preferably on the outdoor side of the lower plate 41, and is preferably provided on the outdoor side and at a position separated from the building outer wall 23, in other words, in the vicinity of the front plate 39.

  Further, in the soundproof structure of the shutter case, the damping material 15 provided along the longitudinal direction of the case 29 is divided into a plurality of parts and arranged at a predetermined interval, so that the damping of the entire length of the case 29 is achieved. Compared with the case where the vibration material 15 is provided, it is possible to reduce the amount of use of the vibration damping material 15. Thereby, the material cost of the damping material 15 can be reduced, and the shutter case can be manufactured at low cost.

Next, a second embodiment of the soundproof structure according to the present invention will be described.
FIG. 5 is a side sectional view of a storage portion having a soundproof structure according to the second embodiment of the present invention, and FIG. 6 is a soundproof structure according to a modification in which a hanging plate portion 59 is provided on the fireproof reinforcing plate 57 of the second embodiment. FIG. 7 is a side sectional view of a soundproof structure according to a modified example in which the storage portion of the second embodiment has a different shape, and FIG. 8 is a modification in which a drooping plate portion 59 is provided on the fireproof reinforcing plate 57 of FIG. It is side sectional drawing of the soundproof structure which concerns on an example. In addition, in each following embodiment, the same code | symbol is attached | subjected to the member and site | part equivalent to the member and site | part shown to FIGS.
In the soundproof structure of the shutter case according to the second embodiment, the vibration damping material 15 is affixed along the winding shaft 13 to the lower surface of the top plate of the case 61 that is a storage portion. A fireproof reinforcing plate 57 is fixed to the case 61, and the fireproof reinforcing plate 57 is disposed along the vibration damping material 15 below the vibration damping material 15 and is inclined forward and downward. The damping material 15 is disposed to the rear end side from the winding shaft 13. The fireproof reinforcing plate 57 is formed in a size that covers all of the vibration damping material 15. Therefore, as shown in the figure, it is provided so as to extend in a direction approaching the building frame that is further rearward than the rear end of the damping material 15.

  The fireproof reinforcing plate 57 is made of a steel plate or the like, and is fixed to the top plate 37 by rivets or the like. That is, it is fixed to the top plate 37 with the damping material 15 sandwiched therebetween. In this case, it is essential that the damping material 15 is in close contact with the top plate 37, and preferably the top plate 37 is attached to the top plate 37 with an adhesive. It is not essential that the fireproof reinforcing plate 57 is in close contact with the vibration damping material 15. Therefore, the fireproof reinforcing plate 57 may be arranged with the gap 63 below the vibration damping material 15. Since the top plate 37 and the fireproof reinforcing plate 57 are separated from each other, the damping material 15 melted by heat flows on the upper surface of the fireproof reinforcing plate 57. That is, the melt damping material is flowed through the gap 63 with the top plate 37 and guided to the outside. Since the fireproof reinforcing plate 57 is inclined forward and downward, the molten vibration damping material can be prevented from flowing down indoors. Even if the top plate 37 is horizontal or inclined, since the fireproof reinforcing plate 57 is inclined, the molten vibration damping material flows down to the front side.

  The fireproof reinforcing plate 57 is preferably provided with a hanging plate portion 59 shown in FIG. The hanging plate portion 59 is formed on the front edge 65 of the fireproof reinforcing plate 57 so as to be along the back side of the front plate 39 of the case 61. A flow-down gap is formed between the front plate 39 and the hanging plate portion 59.

Next, the operation of the soundproof structure according to the second embodiment will be described.
In the soundproof structure according to the second embodiment, the damping material 15 is attached to the bottom surface of the top plate of the case 61. For this reason, even if raindrops falling from the eaves of the building fall on the top plate 37 of the case 61, the vibration energy generated at that time is converted into heat and other energy by the damping material 15, and the inside of the case 61 The sound of the impact sound at is suppressed.

  Further, since the fireproof reinforcing plate 57 is disposed below the vibration damping material 15, even if the adhesive melts due to heat from the fire and the vibration damping material 15 falls, the vibration damping material 15 is received by the fireproof reinforcing plate 57. Will be. Further, since the fireproof reinforcing plate 57 is inclined forward and downward, the melt damping material melted by the heat from the fire is moved to the outdoor side opposite to the indoor side of the case 61 by the forward downward inclination of the fireproof reinforcing plate 57. Be dropped. As a result, it is possible to reduce dripping noise, to suppress the spread of fire due to the vibration damping material 15 at the time of fire, and the adhesive that adheres the vibration damping material 15 is melted and softened by the heat from the fire, and the vibration damping material 15 is peeled off and dropped. Even if there is, it can prevent falling to the indoor side. Moreover, even if the vibration damping material 15 is melted by a fire, it can be prevented from drooping indoors.

  Further, in the soundproof structure according to the second embodiment, the melt damping material that has flowed to the front edge 65 of the fireproof reinforcing plate 57 falls directly below the drooping plate portion 59, and travels indoors along the fireproof reinforcing plate 57. Backflow can be prevented. Thereby, the damping material 15 melted by the fire can be dropped to the front of the case 61 so as not to adhere to the curtain portion 19.

  In addition, in the soundproof structure according to the second embodiment, the structure in which the chamfered portion 43 is formed at the boundary between the top plate 37 and the front plate 39 of the case 61 is shown in FIGS. As shown in FIGS. 7 and 8, the top plate 37 and the front plate 39 may be connected with the corners left. In this case, the fireproof reinforcing plate 57 is formed to extend to a position approaching the front plate 39. However, a gap 63 in which the molten vibration damping material flows is ensured between the extended tip of the fireproof reinforcing plate 57 and the front plate 39. Also in this configuration, as shown in FIG. 8, it is preferable to form a hanging plate portion 59 on the front end edge 65 of the fireproof reinforcing plate 57. Between the hanging plate portion 59 and the front plate 39, the above-described gap 63 through which the molten vibration damping material flows is secured. Accordingly, the molten vibration damping material that has flowed can surely fall directly below the drooping plate portion 59 so that the molten vibration damping material does not adhere to the curtain portion 19.

Next, a third embodiment of the soundproof structure according to the present invention will be described.
FIG. 9 is a side sectional view of the soundproof structure according to the third embodiment of the present invention. FIG. 10A is a side view of the soundproof structure according to the modification in which the hanging plate portion 69 is provided on the fireproof reinforcing top plate 67 of FIG. Sectional drawing (b) is a side sectional view of a soundproof structure according to a modification in which a hanging plate portion 69 larger than (a) is provided.
In the soundproof structure of the shutter case according to the third embodiment, a fireproof reinforcing top plate 67 made of steel plate is fixed along the take-up shaft 13 on the top surface of the top plate 37 of the case 71 that is a storage portion. That is, the fireproof reinforcing top plate 67 can be retrofitted to the outside of the case 71. Of course, the fireproof reinforcing top plate 67 may be assembled when the case 71 is manufactured. A damping material 15 is attached to the lower surface of the fireproof reinforcing top plate 67. The damping material 15 can also be laminated on the fireproof reinforcing top plate 67. In addition, the damping material 15 may be adhered to the fireproof reinforcing top plate 67 by an adhesive material, or may be structurally fixed and laminated by a fixing member such as a screw. As shown in FIG. 9, the fireproof reinforcing top plate 67 can be provided so as not to protrude from the front plate 39 of the case 71.

  On the other hand, the fireproof reinforcing top plate 67 may be provided so as to protrude from the front plate 39 as shown in FIG. In this case, it is preferable that a drooping plate portion 69 shown in FIG. 10A along the front side of the front plate 39 of the case 71 is formed on the front edge 73 of the fireproof reinforcing top plate 67. Furthermore, the drooping plate portion 69 can increase the rigidity of the fireproof reinforcing top plate 67 by increasing the drooping length as shown in FIG.

Next, the operation of the soundproof structure according to the third embodiment will be described.
In the soundproof structure of the shutter case according to the third embodiment, the fireproof reinforcing top plate 67 in which the damping material 15 is attached to the lower surface of the fireproof reinforcing top plate is fixed on the top plate 37 of the case 71. For this reason, even if a raindrop that has fallen from the eaves of a building falls on the fireproof reinforcing top plate 67, the vibration energy generated at that time is converted into heat or other energy by the damping material 15, and the propagation to the case 71 occurs. It is suppressed and the sound of the impact sound inside the case 71 is suppressed. At this time, since the vibration damping material 15 is provided between the fireproof reinforcing top plate 67 and the case 71, raindrops generated on the fireproof reinforcing top plate 67 are difficult to propagate to the case 71. Even if the damping material 15 is melted by heat from the fire, the molten damping material is dropped to the outdoor side of the case 71 by the top plate 37 of the case 71.

  As described above, according to the soundproof structure according to the third embodiment, it is possible to reduce the dripping sound and suppress the spread of fire due to the vibration damping material 15 at the time of a fire. Since the fireproof reinforcing top plate 67 on which the raindrop hits and the top plate 37 of the case 71 are cut off by the damping material 15 (the edges are cut), the sound does not sound easily (raindrop sound is not easily transmitted).

  Further, according to the soundproof structure according to the third embodiment, since the vibration damping material 15 is covered by the fireproof reinforcing top plate 67, the vibration damping material 15 is not exposed to rain or direct sunlight, and has a vibration damping function. Can be maintained for a long time.

  In addition, in the soundproof structure according to the modification shown in FIG. 10 according to the third embodiment, when the raindrop that has fallen on the fireproof reinforcing top plate 67 reaches the front end edge 73, it travels down the hanging plate portion 69 that hangs down at the front end edge 73. The raindrops are separated from the front plate 39 of the case 71 and fall. Thereby, the raindrop which fell on the fireproof reinforcement top plate 67 can be dropped without contacting the front plate 39 of the case 71, and the beauty of the case 71 can be maintained for a long time.

In the shutter device of each embodiment described above, the resin cover 27 described above is attached to the outer periphery of the metal wheel 25 in order to prevent the squeak of the wheel 25 and the slat 51 that are the contact portions of the metals. May be. In this case, since the cover 27 is made of resin, there is a risk that the cover 27 may melt and flow out in the same manner as the damping material 15.
Therefore, in the shutter device described above, the slat 51 is wound around the wheel 25 by one extra turn. That is, even when the curtain portion 19 is extended and the building opening 21 is fully closed, the wheel 25 is covered with the slats 51 as shown in FIG. Thereby, the cover 27 provided on the wheel 25 is protected from the flame by the slat 51.

  According to the flame protection structure using the slat 51, direct heat and fire are shielded by the slat 51, and the resin cover 27 is hardly melted. Even if the cover 27 is melted, the molten cover stays inside the slat 51 wound in a cylindrical shape and covered with the side brackets 31 at both ends, and the spread of fire due to flowing into the indoor side is suppressed. Furthermore, even if the melting cover flows out from the inside of the cylindrical slat 51, the melting cover falls along the outdoor side surface of the curtain portion 19, so that the spread of fire due to flowing into the indoor side is suppressed.

  Note that the damping material 15 of the second embodiment and the third embodiment described above is more outdoor than the indoor front end or the outdoor front end in the top plate portion of the cases 61 and 71 as in the first embodiment. It is not always necessary to be positioned on the front end side, and may be positioned on the indoor side with respect to the take-up shaft 13, that is, the position where the damping material 15 is provided is the top plate 37 of the second embodiment or the third embodiment. Any position on the fireproof reinforcing top plate 67 may be used, and the position is arbitrary as long as there is no problem in use.

  Therefore, according to the soundproof structure of the shutter case according to the present embodiment, it is possible to reduce dripping noise and to suppress the spread of fire due to the vibration damping material 15 at the time of a fire.

DESCRIPTION OF SYMBOLS 13 ... Winding shaft 15 ... Damping material 19 ... Curtain part 21 ... Building opening 23 ... Building outer wall 29 ... Storage part (case)
37 ... Top plate 39 ... Front plate 55 ... Top plate bottom surface tip 57 ... Fireproof reinforcement plate 59 ... Drooping plate portion 61 ... Storage part (case)
65 ... front edge 67 ... fireproof reinforcing top plate 69 ... hanging plate part 71 ... storage part (case)
73 ... Front edge

Claims (6)

A winding shaft on which both ends are supported above the building opening of the building outer wall provided with the building opening and a curtain portion for opening and closing the building opening is wound;
A metal storage part formed in a box shape for storing the winding shaft together with the curtain part fixed and wound on the outer wall of the building;
A sheet-shaped vibration damping material that is attached along the winding shaft at the top plate lower surface distal end portion of the top plate of the storage unit with respect to the winding shaft;
A soundproof structure for a shutter case, comprising: A winding shaft on which both ends are supported above the building opening of the building outer wall provided with the building opening and a curtain portion for opening and closing the building opening is wound;
A metal storage part formed in a box shape for storing the winding shaft together with the curtain part fixed and wound on the outer wall of the building;
A sheet-like damping material that is attached to the lower surface of the top plate of the storage unit along the winding shaft;
A fireproof reinforcing plate that is fixed to the storage portion and is disposed along the vibration damping material below the vibration damping material and inclined forward and downward;
A soundproof structure for a shutter case, comprising: A soundproof structure for a shutter case according to claim 2,
A drooping plate portion along the back side of the front plate of the storage portion is formed at the front edge of the fireproof reinforcing plate,
A soundproof structure for a shutter case, wherein a flow gap is formed between the front plate and the drooping plate portion. A winding shaft on which both ends are supported above the building opening of the building outer wall provided with the building opening and a curtain portion for opening and closing the building opening is wound;
A metal storage part formed in a box shape for storing the winding shaft together with the curtain part fixed and wound on the outer wall of the building;
A fireproof reinforcing top plate fixed along the winding shaft on the top surface of the top plate of the storage unit;
A sheet-like vibration damping material to be attached to the lower surface of the fireproof reinforcing top plate;
A soundproof structure for a shutter case, comprising: The soundproof structure according to claim 4,
A soundproof structure for a shutter case, wherein a drooping plate portion along the front side of the front plate of the storage portion is formed at a front end edge of the fireproof reinforcing top plate. A soundproof structure for a shutter case according to any one of claims 1 to 5,
A soundproof structure for a shutter case, wherein a plurality of the damping materials are intermittently attached along the winding shaft.

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