JP2005146612A - Cut-off member, and cut-off structure of roof plate using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut-off member and a cut-off structure of a roof plate using the cut-off member capable of improving sealing performance against water. <P>SOLUTION: A cut-off member body 27 constituting the cut-off member 24 is formed in approximately T-shaped cross section with a linearly extending upright part 25 and projecting parts 26 extending orthogonally to both sides from the upper end of the upright part 25. Both ends of the projecting parts 26 are protrusively provided with pairs of cut-off protrusions 28 extending while opening in bifurcated shape. A pair of cut-off bodies 38 formed of an elastic material lower in impact resilience than the cut-off member body 27 is attached among the upright part 25, the projecting parts 26 and the cut-off protrusions 28 positioned inside. The cut-off member body 27 is formed of ethylene-propylene-diene copolymerized rubber (EPDM), and the cut-off body 38 is formed of butyl rubber (BR). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a water-stopping material used to prevent infiltration of water, for example, at a joint of a roof plate material laid on a roof of a house, and a water-stop structure of a roof plate material using the same.

As this type of water-stopping material, a water-stopping material body is formed in an inverted U shape with an elastic material such as rubber, and a plurality of water-stopping valves are formed at positions facing the inside of the water-stopping material body. A part formed with one or a plurality of ventilation grooves is known (see Patent Document 1). Then, the water-stopping material is mounted so as to be pushed into the butted portion of the rising portion raised from the opening portion to the end portion of the roof plate material. At this time, a plurality of water stop valves of the water stop material are brought into sliding contact with the rising portion of the roof plate material to exhibit a water stop function.
Japanese Patent Laid-Open No. 7-54448 (pages 2 and 3)

  However, the conventional water stop material is inclined so that the front end is directed toward the inner back so that the plurality of water stop valves can be easily slidably attached to the rising portion of the roof plate material. For this reason, after installing the water stop material on the rising part of the roof sheet material, the water that has entered from the opening end of the water blocking material into the inside is from the sliding contact part between the tip of the water stop valve and the rising part of the roof sheet material. Easy to get inside. The water that has entered the inner part of the waterstop material may permeate into the inside of the roof plate material from the end of the rising portion of the roof plate material, and there is a problem that the sealing performance against water is poor.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a water-stop material capable of improving the sealing performance against water and a water-stop structure of a roof plate material using the same.

  In order to achieve the above object, the waterstop material of the invention according to claim 1 is formed of an elastic material, and extends in a straight line, and extends perpendicularly from both ends of the upright portion to both sides. A pair of water-stopping bodies formed of an elastic material having a rebound resilience smaller than that of the water-stopping material main body, provided with a water-stopping material main body formed into a substantially T-shaped cross section by the overhanging portion. Is provided.

  The waterstop material of the invention according to claim 2 is the waterstop material according to claim 1, wherein the elastic material forming the waterstop material body is ethylene-propylene rubber, and the elastic material forming the waterstop body is butyl. It is a system rubber.

  According to a third aspect of the present invention, there is provided the waterstop material according to the first or second aspect of the present invention, wherein a pair of waterstop ridges are provided at both ends of the projecting portion so as to extend in a bifurcated manner. The water stop ridge located is configured to hold the water stop.

  The waterproof structure of the roof board material of the invention according to claim 4 is the first folding by laying a plurality of roof board materials side by side on the roof base plate of the building and folding the roof board material so that the end of the roof board material is upright. Forming a bent portion, bending the tip of the first bent portion outward to form a second bent portion, and bending the tip of the second bent portion to incline further inward; A channel-shaped clip body having a U-shaped cross section and its opening end are extended outwardly in a state in which the third bent portion is formed and the first bent portions of the roof plate material arranged adjacent to each other are opposed to each other. An anchor clip composed of a clip portion is sandwiched between the first bent portions of the roof plate material, and the clip portion of the anchor clip is superposed on the second bent portion of the roof plate material, and in the joint cover having a substantially Ω cross section. A store that houses the water-stopping material according to any one of claims 1 to 3. Mounted so as to wrap the edge of the plate material and the anchor clip, the overhanging portion of the waterproofing material is brought into close contact with the inner surface of the joint cover, and the third folded portion of the roofing plate material bites into the waterproofing body. It is what.

According to the present invention, the following effects can be exhibited.
According to the water-stopping material of the invention according to claim 1, for example, when the water-stopping material is housed in the joint cover and is attached to the joint portion formed so that the bent portions at the end portions of the roof plate material face each other, The overhanging portion of the main body is in close contact with the inner surface of the joint cover, and the bent portion of the roof plate material bites into the waterstop, whereby the sealing performance against water can be improved.

  According to the water stop material of the invention according to claim 2 and claim 3, in addition to the effect of the invention according to claim 1, depending on the nature of the material of the water stop material body or the water stop body, or a pair of water stop ridges. As a result, the sealing performance against water can be further improved.

  According to the water-stopping structure of the roof plate material of the invention described in claim 4, it is possible to improve the sealing performance against water with a relatively simple structure at the end portion of the roof plate material.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 4 is a perspective view showing a partially cut-off structure of the water stop structure at the joint of the roof plate material laid on the roof of the house. As shown in the figure, the roof board 11 has a three-layer structure in which a particle board 13 as a heat insulating material is joined on a structural plywood 12 and a field board 14 is joined thereon, and is arranged at a predetermined interval. It is supported by the rafter 15 provided. On the roof plate 11, a roof plate material 16 is fixed via a roofing gup (oil paper) (not shown).

  The roof sheet material 16 is bent so that the end portion is upright to become a first bent portion 17, and the second bent portion is bent so that the front end of the first bent portion 17 extends obliquely outwardly downward. It is 18. The tip of the second bent portion 18 is bent to extend further inward and obliquely to form a third bent portion 19. As shown in FIG. 3 (a), the anchor clip 20 includes a clip body 21 having a channel shape with a U-shaped cross section, and an inclined clip portion as a clip portion extending obliquely downward from both ends of the opening. 22.

  Then, as shown in FIG. 3 (b), the anchor clip 20 is placed between the first bent portions 17 in a state where the first bent portions 17 of the two adjacent roof plate members 16 are opposed to each other at a constant interval. The inclined clip portion 22 of the anchor clip 20 is overlapped with the second bent portion 18 of the roof plate 16. As shown in FIG. 3C, in this state, a fixing screw 23 is screwed into the bottom of the anchor clip 20 from the inner surface side, and the anchor clip 20 is fixed to the roof plate 11 and the rafter 15. It is a joint part.

  As shown in FIG. 1, the water stop material 24 is formed of EPDM (ethylene-propylene-diene copolymer rubber) as an elastic material, and has an upright portion 25 extending in a plate shape that is wider toward the upper portion, and one end of the upright portion 25. The water stop material main body 27 formed in the cross-sectional substantially T shape by the overhang | projection part 26 extended orthogonally from a part (upper end part) to both sides is provided. The water blocking material main body 27 is preferably formed of ethylene-propylene rubber such as EPDM in order to be lightweight, maintain a predetermined rigidity, and exhibit excellent heat resistance and weather resistance. Examples of the ethylene-propylene rubber include EPM (ethylene-propylene copolymer rubber).

  A pair of water stop ridges 28 are provided at both ends of the overhang portion 26 of the water stop material main body 27 so as to extend in a bifurcated manner so as to form an inverted V-shaped cross section. A butyl rubber (IIR, isobutylene / isoprene copolymer rubber), which is an elastic material having a smaller rebound resilience than the water-stopping material main body 27, is formed between the upright portion 25, the overhang portion 26, and the water-stop protrusion 28 located inside. A pair of formed waterstops 38 is held. The bottom surface of the waterstop 38 is formed flat. The waterstop body 38 is preferably formed of butyl rubber such as butyl rubber from the viewpoint of low resilience and flexibility and low gas permeability. Examples of the butyl rubber include halogenated butyl rubber such as chlorinated butyl rubber and brominated butyl rubber, and unvulcanized butyl rubber. The water stop material 24 of the present embodiment includes a water stop material main body 27 and a pair of water stop bodies 38.

  In addition, you may use what stuck the butyl rubber sheet on the surface of the resin foam, without forming the water stop body 38 only with a butyl rubber. At this time, the butyl rubber sheet is on the lower surface side. The joint cover 31 and the foam may or may not be bonded.

  In addition, as shown by a two-dot chain line in FIG. 1, a temporary fixing film 39 is attached to the lower surface of the waterstop body 38, the lower surface of the upright portion 25, and the inner side surfaces of both waterstop protrusions 28 located on the inner side. Further, the water stop body 38 is prevented from coming off from both surfaces of the upright portion 25, the lower surface of the overhang portion 26, and the space between the water stop ridges 28 located inside. When the water stop material 24 is used, the temporary fixing film 39 can be easily peeled off.

  As shown in FIG. 3 (c), the joint cover 31 includes a cylindrical portion 32 having an opening at the lower end and an upper portion having a substantially horizontally long cross section, and a pair of leg portions 33 extending obliquely downward from both lower ends. The cross section is formed in a substantially Ω shape. Between the cylindrical part 32 and the leg part 33, the constricted part 34 is the most constricted, and the lower part of the cylindrical part 32 and the leg part 33 are elastically deformed in the width direction. In the joint cover 31 that is inclined so that the upper wall of the cylindrical portion 32 extends horizontally and the both side walls widen downward, the water-stopping material 24 faces the overhanging portion 26 and the upright portion 25 faces downward. Contained. In this case, the water stop ridge 28 located outside is pressed against the inner side surface of the joint cover 31, and is deformed into a shape along the inner side surface of the joint cover 31. The roof plate material 16, the anchor clip 20, and the joint cover 31 are formed with a thickness of 0.4 mm using stainless steel, an aluminum-plated steel plate, or a vinyl chloride resin-coated steel plate.

  Then, as shown in FIGS. 2 and 3 (c), the waterproofing material 24 is accommodated in the joint cover 31, and the end portion of the roof plate 16 and the anchor clip 20 sandwiched between the end portions. It is designed to be wrapped around.

Next, a method and an action for forming a water stop structure of the roof plate material 16 using the water stop material 24 will be described.
As shown in FIG. 3 (a), the joint portion is set by setting the distance between the opposing surfaces of the first bent portions 17 of the adjacent roof plate materials 16 to be the distance between the outer surfaces of the clip main body 21 of the anchor clip 20. The anchor clip 20 is obliquely attached to the joint portion. At this time, as shown in FIG. 3B, the inclined clip portion 22 of the anchor clip 20 is superposed on the second bent portion 18 of the roof plate 16. In this state, the fixing screw 23 is screwed into the bottom of the anchor clip 20 from the inner surface side, and the anchor clip 20 is fixed to the roof plate 11 and the rafter 15. On the other hand, the water blocking material 24 is accommodated in the joint cover 31 with the overhanging portion 26 facing up and the upright portion 25 facing down. At this time, the upper surface of the overhanging portion 26 of the water-stopping material 24 is in contact with the inner surface of the upper wall of the joint cover 31, and the water-stop ridges 28 located outside are in close contact with the inner surface of the side wall of the joint cover 31. 31.

  Thereafter, as shown in FIG. 3C, the joint cover 31 including the water blocking material 24 is attached to the joint portion of the roof plate material 16 from above. That is, when both the leg portions 33 of the joint cover 31 are placed on both the third bent portions 19 of the roof plate material 16, both the leg portions 33 of the joint cover 31 are expanded along the inclination of the third bent portions 19. When the joint cover 31 is further pressed toward the roof plate material 16 side, the constricted portion 34 of the joint cover 31 is the most between the second bent portion 18 and the third bent portion 19 of the roof plate material 16 as shown in FIG. Over the wide part, the inner surface side of both constricted portions 34 abuts on the outer surface of the first bent portion 17 of the roof plate material 16, and the joint cover 31 is attached to the end portion of the roof plate material 16.

  At this time, the water stop ridge 28 located on the inner side is in contact with the third bent portion 19 of the roof plate 16 to bend the third bent portion 19 downward, and at the same time, the tip portion is bent at the third bent portion. It deform | transforms so that it may curve outside so that the part 19 may be followed. For this reason, one of the waterstop ridges 28 is in close contact with the inner surface of the side wall of the joint cover 31, and the other is in close contact with the third bent portion 19 of the roof plate material 16, and the third fold of the side wall of the joint cover 31 and the roof plate material 16 is formed. A sealed space 35 is formed by the bent portion 19 and the water stop ridge 28. Therefore, even if water infiltrates from between the roof plate material 16 and the joint cover 31, the water is accommodated in the sealed space 35, and further intrusion from there is restricted.

  In addition, the third bent portion 19 of the roof plate 16 abuts on the waterstop 38 and further bites into the waterstop 38. At this time, since the lower surface of the waterstop 38 is formed flat, the third bent portion 19 can easily bite into the waterstop 38. Therefore, the auxiliary sealed space 37 is formed by the water stopping ridge 28, the third bent portion 19, and the water stopping body 38 located inside. As a result, even if water infiltrates into the auxiliary sealed space 37 from between the inner water stop ridge 28 and the third bent portion 19, the water is restricted from entering further inside. .

  Moreover, since the butyl rubber which forms the waterstop 38 is excellent in adhesiveness, the waterstop 38 is sufficiently adhered to the upright portion 25, the overhang portion 26 and the waterstop ridge 28 to prevent peeling off. it can. Moreover, since the water stop body 38 has low gas permeability, even if the water in the auxiliary sealed space 37 evaporates to become water vapor, the water stop body 38 is restricted from passing through the water stop body 38. Furthermore, a space between the leg portion 33 of the joint cover 31 and the first bent portion 17 of the roof plate material 16 serves as a ventilation portion, and overheating in the joint cover 31 is suppressed particularly in summer by improving air permeability. Therefore, deformation due to thermal expansion of the water stop material 24 is suppressed.

The effects exhibited by the above embodiment will be described below.
According to the water stop material 24 of the present embodiment, the water stop ridge 28 located on the outer side is in close contact with the inner side surface of the joint cover 31, and the water stop ridge 28 located on the inner side is the third of the roof plate 16. Abutting and closely contacting the bent portion 19. For this reason, even if water infiltrates from the gap between the roof plate material 16 and the joint cover 31, the intrusion of water further inward is restricted by the water stop ridge 28 having an inverted V-shaped cross section. Therefore, the sealing performance against water can be improved by the water blocking material 24.

  Since the waterstop 38 is held by the waterstop 24 and the third bent portion 19 bites into the waterstop 38 to form the auxiliary sealed space 37, the waterstop In addition to the strip 28, a double water stop effect can be exhibited, and the sealing performance against water can be further improved.

  In addition, since the elastic material forming the waterstop body 27 is ethylene-propylene rubber and the elastic material forming the waterstop body 38 is butyl rubber, the waterstop body 27 is shaped with a certain rigidity. The water stop body 38 can improve the sealing performance by the biting of the third bent portion 19.

  -According to the water stop structure of the roof sheet material 16 of this embodiment, the anchor clip 20 and the joint cover 31 in which the water stop material 24 is accommodated are mounted in order on the end portion of the roof sheet material 16. Thereby, the sealing performance with respect to water can be improved easily. And since the joint cover 31 can be mounted | worn without using a tool, water stop construction can be performed within a short period of time.

  Since the water stop material 24 having the water stop ridge 28 and the water stop body 38 may be accommodated in the joint cover 31, the height thereof is higher than that of a conventional water stop material provided with a plurality of water stop valves. It is not necessary to increase the height to the left, and the appearance at the joint portion of the roof can be maintained well.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment will be described mainly with respect to parts different from the first embodiment.

  As shown in FIG. 5, the water stop material 24 of the second embodiment is the same as the water stop material 24 of the first embodiment, in which the water stop ridges 28 located inside are omitted, and the base portions of the water stop ridges 28 are It becomes the support part 40. The support portion 40 holds the outer surfaces of the pair of waterstops 38.

  When the joint cover 31 including the water blocking material 24 is attached to the end of the roof plate 16, the tip of the third bent portion 19 of the roof plate 16 is a water blocking body as shown in FIG. Cut into 38. For this reason, the sealed space 35 is formed by the water stopping ridge 28, the side wall of the joint cover 31, the third bent portion 19, and the water stopping body 38. Therefore, even if water infiltrates from between the roof plate material 16 and the joint cover 31, the water is accommodated in the sealed space 35, and further intrusion from there is restricted.

It should be noted that both the above embodiments can be modified and embodied as follows.
In both embodiments, the water stopping ridge 28 can be omitted. In this case, since the waterstop 38 may not be held by the waterstop main body 27, it is desirable to provide holding means such as adhesion with an adhesive.

-In 1st Embodiment, it can also form so that the cross-sectional shape of the water stop ridge 28 may open in an inverted U shape.
In both embodiments, the bending angle of the second bent portion 18 of the roof sheet material 16 and the clip portion of the anchor clip 20 can be changed to a horizontal direction or the like, as appropriate.

-In both embodiment, it is also possible to comprise the roofing board material 16, the anchor clip 20, and the joint cover 31 with a galvanized steel plate.
In both embodiments, the building constituting the roof may be a warehouse, a factory, a school, a leisure facility, or the like.

Further, the technical idea that can be grasped from the embodiment will be described below.
The water stop material according to any one of claims 1 to 3, wherein an open surface of the water stop body is formed to be substantially flat. When comprised in this way, the edge part of a roof board | plate material can be made to bite into a still water body easily, for example.

  The water stop structure for a roof plate material according to claim 4, wherein the second bent portion and the clip portion of the anchor clip are bent so as to extend obliquely downward. When comprised in this way, it can suppress that a joint cover remove | deviates from the edge part of a roof-plate material.

Sectional drawing which shows the water stop material in 1st Embodiment. Sectional drawing which expands and shows the sealing structure of the roofing board material in 1st Embodiment. (A)-(c) is sectional drawing which decomposes | disassembles and shows the process of forming the sealing structure of a roofing board material. The fragmentary perspective view which fractures | ruptures and shows the sealing structure of a roof board | plate material. Sectional drawing which shows the water stop material in 2nd Embodiment. Sectional drawing which expands and shows the sealing structure of the roofing board material in 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 14 ... Field plate, 16 ... Roof board material, 17 ... 1st bending part, 18 ... 2nd bending part, 19 ... 3rd bending part, 20 ... Anchor clip, 21 ... Clip main body, 22 ... As clip part Inclined clip part, 24 ... water stop material, 25 ... upright part, 26 ... overhang part, 27 ... water stop material body, 28 ... water stop protrusion, 31 ... joint cover, 38 ... water stop body.

Claims (4)

A water-stopping material main body formed of an elastic material and formed in a substantially T-shaped cross section by an upright portion extending linearly and an overhang portion extending orthogonally from both ends of the upright portion; A water-stopping material comprising a pair of water-stopping bodies formed of an elastic material having a rebound resilience smaller than that of the water-stopping material body between the portion and the overhanging portion. The waterstop material according to claim 1, wherein the elastic material forming the waterstop material body is ethylene-propylene rubber, and the elastic material forming the waterstop body is butyl rubber. A pair of water-stopping ridges that extend in a bifurcated manner are provided at both ends of the overhanging portion, and the water-stopping ridges located inside hold the water-stopping body. Item 3. The waterstop material according to Item 2. A plurality of roof plate members are laid side by side on the roof base plate of the building, and the first bent portion is formed by bending the end portion of the roof plate material so that the end portion of the roof plate member stands upright. A second bent portion is formed by bending in the direction, and a third bent portion is formed by bending the tip of the second bent portion so as to incline further inward. An anchor clip comprising a channel-shaped clip body having a U-shaped cross section and a clip portion extending outward from the opening end portion of the roof plate material in a state where the first bent portion of the plate material is opposed to the first bent portion of the roof plate material. The clip portion of the anchor clip is overlapped with the second bent portion of the roof plate material, and the stopper according to any one of claims 1 to 3 is disposed in the joint cover having a substantially Ω-shaped cross section. Contains the water material and wraps the edge of the roof plate and the anchor clip Attached to, brought into close contact overhangs waterproof material on the inner surface of the joint cover, the water stop body water stopping structure of a roof plate, characterized by being configured to bite the third bent portion of the roofing plate.

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