Installation structure of shielding functional members and expansion joint

Abstract

To enable installation of a heat insulating member, a fireproof member, or the like at a joint part around a gap where an expansion joint of a building is installed, even when the "space dimension" thereof is small.SOLUTION: A plurality of flexible support members 7 are laid across the inner surfaces of bodies A and B sandwiching a gap G to form a first support member group 5, and a plurality of flexible support members 7 are laid across in parallel to this to form a second support member group 6. A heat insulating member 4 having a width substantially equal to the width of the gap G is placed between the two support member groups 5 and 6, and the heat insulating member 4 is sandwiched between the two support member groups 5 and 6 to cover an opening surface Ag of the gap G.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an installation structure for a shielding function member that is installed in a gap (hereinafter simply referred to as "gap") in the building frame where an expansion joint is installed, and covers the opening surface of the gap.

[0002] Recently, new classifications for homes have been established, and by 2025 it will be mandatory for all buildings to comply with next-generation energy-saving standards. Various legal reforms are being rapidly implemented to achieve the goal of carbon neutrality.

[0003] In building construction materials where expansion joints are installed, many structures are adopted in which insulating members are installed in the gaps where the expansion joints are installed, blocking heat transfer to the outside of the building through the gaps, in an effort to improve the heating and cooling efficiency of living spaces and achieve energy savings (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-327177 [Patent Document 2] Japanese Patent Application Publication No. 2019-196693 Summary of the Invention [Problem to be solved by the invention]

[0005] The width of the insulating member installed in the gap is usually set to a size that is the sum of the width of the gap and the amount of movement of the body that displaces in the direction that widens the gap, so that even if the body on both sides of the gap facing the gap displaces in the direction that widens the gap during an earthquake, the body will deform to follow this and maintain the opening of the gap in a closed state.

[0006] For example, in the configuration in which an insulating member 101 is installed in a gap 100 shown in Figure 12, if the width of the gap 100 is 600 mm and the set movable amount of the bodies 102, 102 on both sides of the gap 100 is ±300 mm, the width of the insulating member 101 is set to approximately 900 mm, and the insulating member 101, which is installed in the gap 100 with a curved U-shaped cross section, is configured so that when the width of the gap widens due to the occurrence of an earthquake, it deforms in the direction of widening its width in response to the displacement of the body, thereby closing the opening surface of the gap 100 (Figures (A) and (B)).

[0007] On the other hand, when the body is displaced in a direction narrowing the width of the gap 100, the insulating member 101 deforms into a V-shaped cross section, as shown in the same figure (C), and its center protrudes deeply in the depth direction of the gap 100. In this case, if the "pocket dimension," which is the protruding width of the insulating member 101 in the gap depth direction, is not sufficiently large, the insulating member 101 that has deformed within the gap 100 may collide with an expansion joint or structure inside or outside the building that is installed further back, causing deformation or crushing, and may even hinder the movement of the expansion joint installed further back. In order to ensure the movement of the insulating member 101 that has deformed into a V-shaped cross section, a "pocket dimension" of (gap width + amount of movement) / 2 was required. Therefore, there is a problem that the heat insulating member 101 can be installed where the "bore dimension" is ensured, such as at the joints of the roof and ceiling, floor and eaves ceiling, outer wall and inner wall, and inner wall-to-inner wall, but cannot be installed where the dimension is not ensured. The same applies when installing a fireproof member or soundproof member that blocks or obstructs ventilation with the outside air in the gap.

[0008] In view of the problems with the prior art, the present invention aims to provide a structure that allows shielding functional components such as insulating members to be installed in gaps where expansion joints are installed, even in areas with small "space dimensions," and that can deform to follow the displacement of the building structure during an earthquake, thereby blocking or impeding ventilation between the outside of the building and the gap. [Means for solving the problem]

[0009] As mentioned above, conventionally, the width of the insulating member was set to the width of the gap plus the amount of movement of the main body, and when the main body was displaced in the direction widening the gap, the insulating member would widen accordingly, and when the main body was displaced in the direction narrowing the gap, the insulating member would bend into a V-shaped cross section and the central part of the insulating member would protrude in the depth direction of the gap. When an earthquake occurs, the building structure facing the gap displaces horizontally and vertically to absorb the external forces acting on the building, and returns to its original position before the earthquake once the shaking subsides, unless the building is subjected to destructive forces from the earthquake. It is essential that the insulation material installed in the gap is installed so as to close the opening of the gap both before and after the earthquake, and as long as it is maintained in its original installation position, there is no problem even if a large gap appears between the end of the insulation material and the building frame when the gap widens due to shaking caused by the earthquake. In other words, even if the insulation material is set to a width that does not take into account the amount of movement of the frame, as long as the insulation material is in a state where it closes the opening of the gap before and after the earthquake, it can block heat transfer to the outside of the building through the gap. Furthermore, using insulation material with a narrow width makes it possible to reduce the "bore dimension," which is the protrusion width in the depth direction of the gap when the gap narrows and the insulation material deforms into a V-shaped cross section.

[0010] Therefore, in this invention, an insulating member having a width smaller than the width of the gap plus the amount of movement of the structure is used, and this is supported in a position that blocks the opening of the gap while responding to the displacement of the structure due to the occurrence of an earthquake, and a mechanism has been created that allows it to be installed in joint areas around gaps where the ``space dimension'' is small.

[0011] That is, the present invention provides an installation structure for a shielding function member that is installed in a gap in the building frame where an expansion joint is installed and covers the opening surface of the gap, Between the inner surfaces of the skeletons on one side and the skeletons on the other side of the building facing each other across the gap, a first support material group consisting of a plurality of expandable support materials arranged in parallel at predetermined intervals along the length direction of the opening surface of the gap, and a second support material group consisting of a plurality of expandable support materials arranged in parallel at predetermined intervals along the length direction of the opening surface, are spanned; The shielding function member has a configuration in which both upper and lower surfaces thereof are sandwiched between the first and second support material groups and held within the gap. The shielding functional member refers to a member that covers the opening surface of the gap and blocks or inhibits ventilation between the outside of the building and the inside of the gap, thereby fulfilling functions such as heat insulation, fire resistance, sound insulation, etc. The shielding functional member includes the above-mentioned heat insulating member, fireproof member, sound insulating member, etc. that are bridged within the gap. In addition, the above-mentioned "both the top and bottom surfaces of the shielding function member" refers to the surface of the shielding function member facing the opening of the gap when the shielding function member is installed in the gap, regardless of whether the shielding function member is installed vertically or horizontally, and the surface facing the depth of the gap, which is the top surface.

[0012] According to the installation structure of the above configuration, the shielding function member is placed between a first group of support materials and a second group of support materials that are spanned between the inner surfaces of the bodies facing each other across a gap, and its front and back sides are sandwiched between the two groups of support materials and held within the gap. Both the first and second support material groups are made up of multiple expandable support materials that expand and contract within the gap in response to the displacement of the building blocks during an earthquake, and return to their original position (length) before the earthquake when the shaking subsides. When the gap widens and the first and second support material groups extend during an earthquake, the shielding member is sandwiched between the two support material groups and held within the gap. When the gap narrows and the first and second support material groups shrink, both sides of the shielding member are pressed by the building blocks and remain sandwiched between the two support material groups, with its center jutting out or protruding in the depth direction of the gap, deforming into a roughly U- or V-shaped cross section. When the shaking subsides and the two support material groups return to their original positions before the earthquake, the shielding member returns to its flat shape and is held in a position that blocks the opening of the gap. When the gap widens due to shaking caused by an earthquake and the first and second support material groups extend, a gap is created between the end of the shielding function member and the main body, but when the shaking subsides and the first and second support material groups return to their original positions, the entire opening surface of the gap is blocked by the shielding function member.

[0013] As described above, by arranging the shielding member so that it is held between the first and second groups of expandable support materials that are spanned within the gap, it is possible to hold the shielding member installed within the gap in a position that blocks the opening of the gap before and after the occurrence of an earthquake. Therefore, if the shielding member installed within the gap is provided with a width that can close the opening of the gap, or at least a width that is approximately the same as the width of the gap, it can close the opening of the gap before and after the occurrence of an earthquake, blocking or impeding ventilation between the outside of the building and the inside of the gap, thereby providing functions such as heat insulation, fire resistance, and sound insulation. Because the width of the shielding function member can be set to a small width that does not take into account the amount of movement of the body as in the past, the "thickness dimension," which is the protruding width in the gap depth direction when the gap narrows and the shielding function member deforms into a roughly U- or V-shaped cross section, can be reduced, making it possible to install the shielding function member in the joint area around the gap where the "thickness dimension" cannot be sufficiently ensured. Furthermore, using a narrow-width shielding function member allows the product area to be small, which reduces manufacturing costs.

[0014] In the installation structure having the above configuration, the support member is an elastic member and can be formed using a synthetic resin material having rubber elasticity, such as a thermoplastic elastomer. It may be formed of a rubber material or a coil spring. It can have any suitable shape, such as a wire, string, rope, tube, plate, net, or bellows shape.

[0015] The insulating member, which is a shielding member, can be, for example, a vacuum insulating material in which a core material such as glass wool is wrapped in a film. The insulating member can be made of any material, including glass wool board, rock wool board, phenolic foam, rigid urethane foam, and polystyrene foam. The fire-resistant member can be, for example, a blanket-like member made of materials and specifications that comply with technical standards and laws regarding fire resistance. The sound-insulating member can be, for example, a member made of a soft sheet of synthetic resin. It is preferable that the heat insulating members, fireproof members, and soundproof members, which are shielding functional members, are maintained in a shape that blocks the opening of the gap in order to block or inhibit ventilation between the outside of the building and the inside of the gap, that is, that they have a certain degree of rigidity so that they protrude into the opening and block the opening. A certain degree of rigidity can be imparted to sheet-like or blanket-like fireproof members and soundproof members by integrally layering a thin metal or synthetic resin plate material over the entire or part of their surface.

[0016] In the installation structure of the above configuration, it is preferable that a protruding piece portion is provided in the widthwise central portion of the shielding function member on either one or both sides of the upper and lower surfaces, and that the support material is connected to this protruding piece portion. According to this, by connecting the support material to the protrusion provided in the widthwise center portion of the shielding function member, even if the first and second support material groups expand and contract in response to the displacement of the structures on both sides of the gap when an earthquake occurs, the center of the shielding function member can be kept in the center of the gap, and it can be positioned to close the opening surface of the gap even after the earthquake has subsided. Although it is possible to position the center of the shielding member at the center of the gap by providing a protrusion on either the upper or lower surface of the shielding member and connecting a support to it, it is preferable to provide protrusions on both the top and bottom surfaces and connect support members to both of them, as this ensures reliable positioning at the center. In this case, it is preferable to connect one of the support members connected to the protrusions on the top and bottom surfaces to the support member with a wire or the like. The material of the protruding piece is preferably synthetic resin when the shielding member is a heat insulating member to prevent the occurrence of thermal bridges, and is preferably stainless steel or steel when the member is a fire-resistant member.

[0017] The phrase "connecting the support material to the protruding piece" means that the support material is connected to the protruding piece, and refers to connecting or coupling the support material through a hole formed in the protruding piece, or engaging the support material with a hook or notch provided in the protruding piece. The support material may be passed through the hole and engaged to connect. The support material may also be connected to the protruding piece using a wire such as a wire, a connecting metal fitting such as a clip, adhesive, or a fastener such as a screw. The hole formed in the protruding piece may be large enough to pass a single support material through, or large enough to pass multiple support materials through.

[0018] In the installation structure having the above configuration, it is preferable that a reinforcing member be provided along both end portions of the shielding function member so as to cover the both end portions and reinforce the both end portions. The reinforcing member is formed from a metal or synthetic resin plate bent so as to overlap the end of the shielding function member, and can be attached by being fixed integrally to the end of the shielding function member.

[0019] In the installation structure having the above configuration, a first support group is installed on the upper surface side of the shielding function member within the gap, and a second support group is installed on the lower surface side. The second support group can be installed parallel to the first support group, shifted in position from the first support group in the gap depth direction, and with a gap gap distance between them that allows the shielding function member to be positioned. In this case, it is preferable that a guide piece be provided at the connection between the inner surfaces of both frames where both ends of the second support material group are connected, inclining toward the depth of the gap between the frames. If the guide piece is provided, when the gap narrows due to an earthquake and the first and second support groups shrink, the base of the second support group and both ends of the shielding member will both be inclined toward the depth of the gap along the guide piece, and the both ends of the shielding member will follow the guide piece, allowing the entire shielding member to smoothly deform in the depth of the gap into an approximately U- or V-shaped cross section.

[0020] As an alternative to the installation structure in which the shielding function member is connected to a support material at the center, a configuration in which the end of the shielding function member on the side of the building's structure facing the gap is connected to the structure on that side may also be used. In this case, the shielding member is sandwiched between the first and second support material groups and held in a position that closes the opening of the gap. When the gap widens and the support material groups expand during an earthquake, the shielding member is held in the gap, sandwiched between the support material groups while connected to the one body. At this time, a gap is created between the shielding member and the other body, but when the shaking subsides and the support material groups return to their original positions before the earthquake, the shielding member is held in a position that closes the entire opening of the gap. When the gap narrows and the first and second support material groups shrink, as described above, both sides of the shielding member are pressed by the two bodies and, while sandwiched between the support material groups, it deforms into an approximately U- or V-shaped cross section in the depth direction of the gap. When the shaking subsides and the support material groups return to their original positions before the earthquake, the shielding member returns to its flat shape and is held in a position that closes the entire opening of the gap.

[0021] As an alternative to the above-described installation structure, the shielding function member may be arranged so that it can be separated on both sides along the center of its width, and the ends on both sides may be connected to the structural members on both sides of the building facing each other across a structural gap. In this case, the shielding member is sandwiched between the first and second support material groups and held in a position that closes the opening of the gap; when the gap widens and the support material groups extend during an earthquake, the shielding member, whose both ends are connected to the bodies on either side of the gap, splits along its center to the two bodies and is held in the gap between the two support material groups with a gap in the center; when the shaking subsides and the support material groups return to their original positions before the earthquake, the separated central portions of the shielding member join together and are held in a position that closes the entire opening of the gap. When the gap narrows and the first and second support material groups shrink, the shielding member deforms in the depth direction of the gap, as described above, and as the shaking subsides and the support material groups return to their original positions before the earthquake, it returns to its flat shape and is held in a position that closes the entire opening of the gap.

[0022] In addition, the expansion joint of the present invention is an expansion joint that is installed at the indoor / outdoor junction of a gap provided in a building, and is characterized by having a cover body that covers the gap at the indoor / outdoor junction, and a shielding function member that is installed within the gap by the installation structure.

[0023] The expansion joint of the above configuration can be installed at the joints between opposing structural bodies across a gap, such as the joints between a roof and a ceiling, a floor and a eaves ceiling, the joints between an exterior wall and an interior wall, or the joints between interior walls. [Effects of the Invention]

[0024] According to the present invention, it is possible to install a shielding member such as a heat insulating member in a gap where an expansion joint is installed, even in a portion with a small "space dimension." The shielding member deforms while following the displacement of the building frame when an earthquake occurs, and after the earthquake, it is maintained in its original position to block the entire opening of the gap, thereby maintaining its function of blocking or impeding ventilation between the outside of the building and the inside of the gap. [Brief explanation of the drawings]

[0025] [Figure 1]1 is a cross-sectional view showing a schematic configuration of an embodiment of the expansion joint of the present invention. [Figure 2] FIG. 2 is a schematic view of the outer appearance of the heat insulating member shown in FIG. 1 from the top surface side. [Figure 3] FIG. [Figure 4] 1 is a schematic diagram showing the end and central portions of a support material and an insulating member supported by the support material on the side of the main body. [Figure 5] FIG. 2 is an external view of a main part of a fixing member attached to the inner surface of the body. [Figure 6] 1A and 1B are views showing the connection between the protruding piece of the heat insulating member and the support material, with FIG. 1A being an external view of the main part on the top surface and FIG. 1B being an external view of the main part on the bottom surface. [Figure 7] FIG. 1 shows a schematic cross-sectional view of the heat insulating member (A) and a schematic plan view of the heat insulating member (B). [Figure 8] 8A is a schematic cross-sectional view and FIG. 8B is a schematic plan view when the width of the gap is expanded from the state of FIG. 7. [Figure 9] 8A is a schematic cross-sectional view and FIG. 8B is a schematic plan view when the gap width is reduced from the state of FIG. 7. [Figure 10] 8 is a schematic plan view showing the state when the body is displaced in the gap length direction from the state shown in FIG. 7. FIG. [Figure 11] 10A and 10B are diagrams showing the state when the gap is widened in another embodiment of the shielding function member installation structure of the present invention. [Figure 12] FIG. 10 is a diagram showing an aspect in which a heat insulating member of a conventional expansion joint is installed in a gap. DETAILED DESCRIPTION OF THE INVENTION

[0026] A preferred embodiment of the present invention will be described with reference to the drawings, but the technical concept of the present invention is not limited to the embodiment described below.

[0027] FIG. 1 shows an expansion joint according to one embodiment of the present invention. This expansion joint 1 is installed along a gap G arranged in the exterior wall of a building, and is constructed by covering the gap G by slidably spanning a cover body 2 between opposing bodies A and B separated by the gap G, and by installing an insulating member 4, which acts as a shielding member, within the gap G.

[0028] In detail, the cover body 2 is supported by holder materials 3, 3 attached along the gap G to the ends of both bodies A, B facing the gap G, and when bodies A, B are displaced relative to each other due to an earthquake or other cause, causing expansion, contraction, or shifting of the gap G, the support position of the cover body 2 moves relatively on the holder materials 3, 3 in response to the displacement, absorbing the displacement and maintaining the gap G covered.

[0029] The insulating member 4 is a vacuum insulating material in which a core material such as glass wool is vacuum-packed in a film, and as shown in Figure 1, it is sandwiched between first and second support material groups 5 and 6 installed in the gap G described below, and is held within the gap G so as to cover the entire opening surface Ag of the gap G.

[0030] The insulating member 4 is formed by vacuum-packing the entire core material in film, with its width Wim set to be approximately the same as or slightly larger than the width Wg of the gap G (Wim≧Wg), and its length set to be approximately the same as the length of the gap G. Projections 41, 42 made of synthetic resin plate material protrude integrally from both the top and bottom sides of the central portion in the width direction of the heat insulating member 4 along the length direction of the heat insulating member 4. A plurality of holes 41a, 42a are formed in the projecting portions 41, 42 at predetermined intervals, and as shown in Figures 4 and 6, support members 7 are inserted through the holes 41a, 42a at positions where first and second support member groups 5, 6, described below, intersect with the projecting portions 41, 42 (see Figures 4 and 6). As shown in Figure 4, both ends of the insulating member 4 are reinforced by integrally attaching reinforcing members 44 made of metal plate material bent into a U-shaped cross section along the ends to cover both the top and bottom of the ends. In addition, on the underside of the insulating member 4, multiple reinforcing materials 43 made of synthetic resin sheets are attached in strip form along the width direction of the insulating member 4 to prevent damage caused by contact and rubbing against the surface of the insulating member 4 with the support materials 7 of the second support material group 6 (see Figure 3). The insulating member 4 is formed to a length that matches the longitudinal dimension of the gap G, but if the longitudinal dimension of the gap G is large, multiple insulating members 4 formed to a shorter length are joined together and installed along the gap G.

[0031] The first and second support material groups 5, 6 are each constructed by arranging a plurality of elastic support materials 7 at predetermined intervals along the length of the gap G, with both ends of each material spanning the inner surfaces of the bodies A, B on either side of the gap G. Specifically, the support member 7 is a rod-shaped member made of a material having rubber elasticity, preferably a thermoplastic elastomer, that is flexible in its axial direction, and has hook-shaped engaging hooks 71, 71 integrally formed at both ends. The support member 7 is formed to a length shorter than the width Wg of the gap G, and when stretched between its both ends to apply tension, the engaging hooks 71, 71 at both ends engage with holes 8a, 8a of fixing members 8, 8 fixed to the inner surfaces of the bodies A, B, respectively, to bridge the gap G.

[0032] As shown in Figures 4 and 5, in order to prevent the occurrence of thermal bridges, fixing member 8 is formed by resin extrusion molding into a shape in which plate surface 82 protrudes at an angle from the inside of long plate surface 81 that is bent into a roughly L-shaped cross section, and the longitudinal direction of the fixing member 8 is aligned with the length direction of gap G, with the steel plate on the back side placed against the inner surface of bodies A and B, and fixing devices such as anchor bolts are driven in to fix it to the inner surface of both bodies A and B, respectively. A plurality of holes 8a are formed in each of the plate surfaces 81 and 82 along the longitudinal direction at predetermined intervals, and when the fixing member 8 is fixed to the inner surfaces of both bodies A and B, the plate surface 81 is located on the opening side of the gap G and protrudes along the width direction of the gap G, and the plate surface 82 protrudes at an angle towards the depth direction of the gap G, so that the holes 8a in the plate surface 81 engage with the engaging hooks 71 of the support material 7 of the first support material group 5, and the holes 8a in the plate surface 82 engage with the engaging hooks 71 of the support material 7 of the second support material group 6. The holes 8a formed in the plate surface 81 and the holes 8a formed in the plate surface 82 are formed so as to be offset from each other along the longitudinal direction of the fixing member 8. The holes 8a formed in the plate surface 81 and the holes 8a formed in the plate surface 82 are spaced apart so that the support materials 7 of the first and second support material groups 5 and 6 can be engaged with each other and placed across the inner surfaces of the bodies A and B, with the upper and lower surfaces of the insulating member 4 sandwiched between the support materials 7 of the first and second support material groups 5 and 6.

[0033] As described above, the first and second support material groups 5, 6 are both composed of a plurality of support materials 7, and the first support material group 5 is installed by engaging the engaging hooks 71, 71 at both ends of the support material 7 with each of the hole portions 8a, 8a formed in the plate surfaces 81, 81 of the fixing members 8, 8 attached along the inner surface of the main bodies A, B, and bridging the plurality of support materials 7 parallel to the front side of the gap G, and the second support material group 6 is installed by engaging the engaging hooks 71, 71 at both ends of the support material 7 with each of the hole portions 8a, 8a formed in the plate surfaces 82, 82 of the fixing members 8, 8, and bridging the plurality of support materials 7 parallel to the rear side of the gap G.

[0034] The insulating member 4 is arranged so that its upper and lower surfaces are sandwiched between the first and second support material groups 5 and 6, covering the entire opening surface Ag of the gap G, and as shown in Figure 6, the support material 7 of the first support material group 5 is passed through the hole 41a of the protruding piece 41 protruding toward the upper surface at its center, and the support material 7 of the second support material group 6 is passed through the hole 42a of the protruding piece 42 protruding toward the lower surface, and the support materials 7 passed through the hole portions 41a and 42a are connected together to each hole portion with wire 9, thereby being held within the gap G.

[0035] The expansion joint 1 of this embodiment, which is made up of these parts, can be installed in the following construction procedure: fixing members 8, 8 are attached in parallel along the length of the gap G to the inner surfaces of the bodies A, B facing the gap G; support materials 7 are passed through each of the holes 42a of the protruding pieces 42 on the underside of the insulating member 4, and each support material 7 is placed across both fixing members 8, 8 to install the second support material group 6; support materials 7 are passed through each of the holes 41a of the protruding pieces 41 on the upper surface of the insulating member 4 and placed across both fixing members 8, 8 to install the fixing members 4 and the first support material group 5; the insulating member 4 is held sandwiched between the first and second support material groups 5, 6; the opening surface Ag of the gap G is closed with the insulating member 4; and then a cover body 2 covering the gap G is installed on the outer surfaces of the bodies A and B so that it can slide freely along the width and length of the gap G. The support members 7 of the first and second support member groups 5, 6 may be passed through the holes 41a, 42a of the upper and lower protrusions 41, 42 of the heat insulating member 4 in advance, and then brought between the inner surfaces of the bodies A, B to which the fixing members 8, 8 are attached, and each support member 7 is bridged across the fixing members 8, 8, so that the heat insulating member 4 and the first and second support member groups 5, 6 are simultaneously installed. As described above, the support members 7 passed through the holes 41a, 42a of the heat insulating member 4 are integrally connected to each hole with wire 8.

[0036] According to the expansion joint 1 of this embodiment, when an earthquake occurs and the bodies A and B are displaced relative to each other on both sides of the gap G, the cover body 2 slides in response to the displacement, thereby maintaining the gap G blocked, and at this time the insulating member 4 remains sandwiched between the first and second support material groups 5 and 6 and supported within the gap G, and is maintained in a position blocking the opening surface Ag of the gap G even after the earthquake has subsided.

[0037] That is, as shown in FIG. 7, the heat insulating member 4 is placed in the gap G with its upper and lower surfaces sandwiched between the first and second support material groups 5 and 6.

[0038] When an earthquake occurs and the bodies A and B are displaced relative to each other, widening the gap G, the first and second support material groups 5 and 6 extend, as shown in Figure 8, and the insulating member 4 is held between the extended support material groups 5 and 6. At this time, gaps are created between both sides of the insulating member 4 and the inner surfaces of the bodies A and B, but when the shaking subsides and the first and second support material groups return to their original positions (lengths), the entire opening surface Ag of the gap G is blocked by the insulating member 4, as shown in Figure 7.

[0039] When the bodies A and B are displaced relative to each other and the width of the gap G narrows, the first and second support material groups 5 and 6 shrink, as shown in Fig. 9, and the two sides of the insulating member 4 are pressed by the bodies A and B, and the center of the insulating member 4 juts out or protrudes in the depth direction of the gap while remaining sandwiched between the support material groups 5 and 6, deforming into a generally U- or V-shaped cross section. At this time, both ends of each support member 7 of the second support material group 6 passed through the underside of the insulating member 4 are connected to plate surfaces 82 that protrude at an angle toward the depth direction of the gap G of the fixing members 5 and 5. These plate surfaces 82 serve as the guide pieces described above, and when the width of the gap G narrows, both sides of the insulating member 4 come into contact with the inclined plate surfaces 82, and the entire insulating member 4 is guided to bend or curve in the depth direction of the gap G. As the two support material groups 5 and 6 shrink, the insulating member 4 can be smoothly deformed in the depth direction of the gap. When the shaking stops and the first and second support material groups return to their original positions, the entire opening surface Ag of the gap G is blocked by the heat insulating member 4 as shown in FIG.

[0040] Furthermore, when the bodies A and B are displaced relative to each other along the longitudinal direction of the gap G, as shown in Figure 10, the first and second support material groups 5 and 6 extend in response to the displacement of the bodies A and B, while the insulating member 4 remains sandwiched between the two support material groups 5 and 6 and is held in a position blocking the opening surface Ag of the gap G.

[0041] FIG. 11 shows another embodiment of the present invention, and in FIG. 11(A) an insulating member 4 is installed with its end on the side of the frame A connected to the inner surface of the frame A. In detail, the heat insulating member 4 is sandwiched between the first and second support material groups 5 and 6 and held in a position that closes the opening face Ag of the gap G. When an earthquake occurs and the width of the gap G widens and the two support material groups 5 and 6 are extended, as shown in the figure, the heat insulating member 4 is held in the gap G while connected to the skeleton A. At this time, a gap is created between the other end of the heat insulating member 4 and the inner surface of the skeleton B. However, when the shaking subsides and the two support material groups 5 and 6 return to their original positions, the heat insulating member 4 is held in the opening face A of the original gap G. When the width of the gap G narrows and the first and second support material groups 5, 6 shrink, as described above, both sides of the insulating member 4 are pushed by the two main bodies A, B, and while being sandwiched between the two support material groups 5, 6, it deforms into an approximately U- or V-shaped cross section in the depth direction of the gap G, and as the shaking subsides and the two support material groups 5, 6 return to their original positions before the earthquake, the insulating member 4 returns to its flat shape and is held in a position that blocks the entire opening surface Ag of the gap G.

[0042] Also, in the same figure (B), the insulating member 4 is a detachable member that is installed on both sides along the center of the width, with the ends on both sides connected to the inner surfaces of body A and body B, respectively. In detail, the insulating member 4 is sandwiched between the first and second support material groups 5, 6 and held in a position that closes the opening surface Ag of the gap G; when the width of the gap G widens during an earthquake and the two support material groups 5, 6 extend, the insulating member 4 is divided along the center toward the two bodies A and B, leaving a gap in the center, and is held in the gap G between the two support material groups 5, 6; when the shaking subsides and the two support material groups 5, 6 return to their original positions, the separated central portions of the insulating member 4 join together and are held in a position that closes the entire opening surface Ag of the gap G; and when the width of the gap G narrows and the first and second support material groups 5, 6 shrink, the insulating member 4 deforms in the depth direction of the gap G, as described above, and as the shaking subsides and the two support material groups 5, 6 return to their original positions, it restores to its flat shape and is held in a position that closes the entire opening surface Ag of the gap G.

[0043] According to each of the above embodiments, by arranging the insulating member 4 to be held between the first and second support material groups 5 and 6 that are flexible and span the gap G, it is possible to hold the insulating member 4 installed in the gap G in a position that blocks the opening surface Ag of the gap G before and after the occurrence of an earthquake. Therefore, if the insulating member 4 installed in the gap G is wide enough to close the opening surface Ag of the gap G, or at least approximately the same width as the gap G, it will be possible to close the opening surface Ag of the gap G before and after an earthquake, blocking or impeding ventilation between the outside of the building and the inside of the gap, and preventing heat from outside the building from being transmitted to the inside of the building through the gap G. Since the width of the insulating member 4 can be set small, the "pocket dimension," which is the protruding width in the gap depth direction when the gap G narrows and the insulating member 4 deforms into an approximately U- or V-shaped cross section, can be reduced, making it possible to install the insulating member 4 even in joint areas around gaps where the "pocket dimension" that can be secured is small.

[0044] In the illustrated embodiment, the width Wim of the insulating member 4 is set to be approximately the same as or slightly larger than the width Wg of the gap G (Wim≧Wg), but it may also be set to a larger width (Wim>Wg). As mentioned above, in the past, to ensure the movement of the insulating member IE deformed into a V-shaped cross section, it was necessary to ensure a "threshold dimension" of approximately (gap width + movement amount) / 2. However, the present invention makes it possible to set the "threshold dimension" to a minimum of approximately (gap width) / 2 without considering the movement amount. The insulating member 4 is not limited to the above width (Wim≧Wg), and a wider width may be used depending on the building's "threshold dimension" as long as the movement of the insulating member can be ensured.

[0045] Furthermore, in the illustrated embodiment, an insulating member is installed in the gap as a shielding functional member, but the present invention is also applicable to an embodiment in which a fire-resistant member or a sound-insulating member is installed in the gap instead of an insulating member.

[0046] The shapes of the cover body 2, the insulating member 4 (shielding function member), the first and second support material groups 5 and 6, the support material 7 and the fixing member 8 that constitute the expansion joint shown in the figure are examples, and the present invention is not limited to the shapes shown in the figures, and can be configured in other appropriate shapes. [Explanation of symbols]

[0047] REFERENCE SIGNS LIST 1 expansion joint, 2 cover body, 3 holder, 4 heat insulating member, 41, 42 protruding piece portion, 41a, 42a hole portion, 43 reinforcing material, 44 reinforcing member, 5 first support material group, 6 second support material group, 7 support material, 71 engaging hook, 8 fixing member, 8a hole portion, 81, 82 plate surface, 9 wire, G gap, A, B body, Ag opening surface

Claims

1. In the installation structure of a shielding function member that is installed in a gap in the building structure in which an expansion joint is installed and covers the opening surface of the gap in the building structure, Between the inner surfaces of the skeletons on one side and the skeletons on the other side of the building facing each other across the skeleton gap, a first support material group consisting of a plurality of expandable support materials arranged in parallel at predetermined intervals along the length direction of the opening surface of the skeleton gap, and a second support material group consisting of a plurality of expandable support materials arranged in parallel at predetermined intervals along the length direction of the opening surface, are spanned; An installation structure for a shielding function member, characterized in that the upper and lower surfaces of the shielding function member are sandwiched between the first support material group and the second support material group and held within the body gap.

2. 2. The shielding function member installation structure according to claim 1, wherein the shielding function member is provided with a width substantially equal to the width of the gap between the bodies.

3. An installation structure for a shielding function member as described in claim 1 or 2, characterized in that a protruding piece portion is provided in the widthwise central portion of the shielding function member on either one or both sides of the front and back surfaces, and a support material is connected to this protruding piece portion.

4. 4. The shielding member installation structure according to claim 3, further comprising a support member passing through a hole formed in the protruding piece.

5. 3. The shielding function member installation structure according to claim 1, wherein reinforcing members are integrally provided at both ends of the shielding function member.

6. The second support material group is positioned further in the depth direction of the gap between the main body than the first support material group, and is attached parallel to the first support material group with a gap between them that allows the placement of the shielding function member, and a guide piece inclined toward the depth direction of the gap between the main body is provided at the connection part of the inner surface of both main bodies to which both ends of the second support material group are connected.

7. 3. An installation structure for a shielding function member according to claim 1 or 2, characterized in that an end of the shielding function member on the structure side is connected to the structure on one side of the building facing the structure gap.

8. An installation structure for a shielding function member as described in claim 1 or 2, characterized in that the shielding function member is detachably arranged on both sides along the center of its width, and both ends of the shielding function member are respectively connected to the structural members on both sides of the building facing each other across a structural gap.

9. 3. An installation structure for a shielding function member as described in claim 1 or 2, wherein the shielding function member is a member that covers the opening surface of the structural gap and blocks or inhibits ventilation between the outside of the building and the structural gap, thereby providing either insulation, fire resistance or sound insulation functions.

10. An expansion joint installed at the indoor and outdoor joints of the building's structural gap, A cover body that covers the gap between the bodies of the indoor and outdoor joint parts; An expansion joint having a shielding function member installed in a gap between building bodies by the installation structure according to claim 1 or 2.

Images