JP2008095296A - Expansion joint device for wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion joint device for a wall, which enables the smooth expansion/contraction of a joint plate structure and a reinforcing structure, which enhances the airtightness of the joint plate structure, which avoids a risk by enhancing safety in the case of the elongation of the joint plate structure, and which facilitates assembling work and installation construction on a job site. <P>SOLUTION: The joint plate structure 26, which comprises fixing joint plates 19 and 20, movable joint plates 21 and 22, a front-side central joint plate 23 and a backside central joint plate 25, and the reinforcing structure 27 are connected together by means of a connecting mechanism 28; and both longitudinal ends of the structures 26 and 27 are fixed together by means of a pair of reinforcing connecting materials 18. The respective reinforcing connecting materials 18 are fixed to buildings 3 and 4, adjacent to each other with a void 2 in between, via hinge members 15 and 16. A pair of sliding structures 29 and 30, which is expanded/contracted in such a manner as to follow the longitudinal relative displacement of the buildings 3 and 4, is juxtaposed on both the longitudinal sides of the connecting mechanism 28 so that the joint plates 19 and 20 and the joint plates 21 and 22 cannot be separated from one another in the front-rear face direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wall expansion joint device that allows relative displacement between two adjacent buildings and closes a gap between the buildings.

  Conventionally, in high-rise buildings such as apartment houses, commercial multipurpose buildings, hospitals, nursing homes, and schools shown in FIG. 11, a gap 102 exists between two adjacent buildings 100 and 101 due to the intervention of joints. In order to prevent rainwater, garbage, and the like from entering from the outside 103, such a space 102 is provided with a wall expansion joint device 104 extending substantially vertically between the wall surfaces 100a, 101a of the buildings 100, 101. .

  The wall expansion joint device 104 includes a pair of hinge members 106 fixed to the wall surfaces 100 a and 101 a of the buildings 100 and 101 by screws 105, and one of the two hinge pieces whose longitudinal ends are hinge members 106. A pair of fixed joint plates 107, 108 fixed to the movable piece 106a, and a pair of movable joint plates 109, 110 disposed on the back side facing the gap 102 so as to be displaceable in the longitudinal direction of each fixed joint plate 107, 108, and A joint plate structure 112 having a front center joint plate 111 covering from the front side facing the exterior 103 so that both longitudinal ends overlap with the other longitudinal ends of the fixed joint plates 107 and 108, and a joint plate structure 112 Arranged on the back side facing the air gap 102, the plural link members can be angularly displaced in a pantograph shape Reinforcing structure 113 in which both ends in the longitudinal direction near the buildings 100 and 101 are pivotally connected to the movable piece 106a of each hinge member 106, and the joint plate structure 112 and the reinforcement are configured. A support base 114a, a support 114b made of a square pipe, and a pivotal support, which are arranged between the structures 113 in the center in the longitudinal direction of both of them and connect and fix the front center joint plate 111 of the joint plate structure 112 to the reinforcing structure 113. A connecting mechanism 114 including a pin 114c, and horizontal slide structures 115 and 116 that expand and contract following the relative displacement in the longitudinal direction of the fixed joint plates 107 and 108 and the movable joint plates 109 and 110 are provided. Yes.

  One slide structure 115 includes a support rail 115a made of channel steel with a lip that is fixed to the surface facing the exterior 103 of a square pipe column 114b by welding at the center in the longitudinal direction, and a plurality of rollers 115b. The slide body 115c is slidably inserted into the support rail 115a by rolling and is fixed to one movable joint plate 109, and the other slide structure body 116 has a longitudinal center portion on one side. A support rail 116a made of channel steel with a lip fixed to a surface facing the exterior 103 of a square pipe support 114b by welding under the slide structure 115, and a support rail 116a by rolling of a plurality of rollers 116b. And a slide body 116c fixed to the other movable joint plate 110. In FIG. 11, an elastic sealing material 117 is driven from the outside 103 side between the wall surfaces 100a, 101a of each building 100, 101 and one longitudinal end of each fixed joint plate 107, 108, and this elastic sealing. By adhering one longitudinal end of each fixed joint plate 107, 108 to the wall surface 100a, 101a of each building 100, 101 by the adhesive effect of the material 117, the supporting form of each fixed joint plate 107, 108 is maintained. Yes.

  The wall expansion joint device 104 having the above-described configuration can cause relative displacement in the left-right direction in which the buildings 100 and 101 approach and separate from each other due to an earthquake or the like, and in the front-rear direction perpendicular to the virtual horizontal plane in the left-right direction. The combined displacement of the reinforcing structure 113, the slide structures 115 and 116, and the joint plate structure 112 in the longitudinal direction and the rotation of the pair of hinge members 106 allows these relative displacements to be allowed and followed. It is said that an airtight state in which the gap 102 is blocked can be maintained (for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-220550.

  In the wall expansion joint device 104 described in Patent Document 1, the engagement pieces 107a and 108a at the other longitudinal end portions of the fixed joint plates 107 and 108 are connected to the longitudinal end portions of the movable joint plates 109 and 110, respectively. The joint plate structure 112 is inferior in airtightness because it only engages with the locking pieces 109a and 110a. In particular, as shown in FIG. 12, when the buildings 100 and 101 are relatively displaced in the left-right direction away from each other, the external 103 and the gap 102 are connected to the engaging pieces 107a and 108 and the locking pieces 109a and 110a. It will communicate with each other through a path passing through the engagement gap, and the airtight state in which the gap 102 is blocked by the joint plate structure 112 cannot be maintained, and rainwater, dust, or the like enters the gap 102 from the outside 103. Become.

  Further, the front center joint plate 111 is supported by the support base 114a only at the center portion in the longitudinal direction, and both end portions in the longitudinal direction are separated from the movable joint plates 109 and 110. Therefore, the front center joint plate 111 is distorted or twisted. If distortion or twist occurs, smooth expansion and contraction of the joint plate structure 112 is hindered.

  Further, each fixed joint plate 107, 108 has one end in the longitudinal direction fixed to the movable piece 106a of the two hinge pieces of each hinge member 106, and the engagement pieces 107a, 108a at the other end in the longitudinal direction have each movable joint plate. 109 and 110 are supported in an unstable manner by a cantilever structure that is releasably engaged with locking pieces 109a and 110a at one end in the longitudinal direction. Therefore, the support form of each fixed joint plate 107, 108 is provided by the adhesive effect of the elastic sealing material 117 placed from the outside 103 side between the wall surfaces 100a, 101a of each building 100, 101 and each fixed joint plate 108, 109. Must be maintained. However, relative displacement in the front-rear direction occurs in each building 100, 101, and one longitudinal end of each fixed joint plate 107, 108 rotates together with the movable piece 106 a of the two hinge pieces of each hinge member 106. Even if a pressing force that presses the elastic sealing material 117 against the wall surfaces 100a and 101a or a tensile force that pulls the elastic sealing material 117 from the wall surfaces 100a and 101a acts on one end portion of each fixed joint plate 107, 108 in the longitudinal direction. Since the material 117 has low elasticity, it cannot absorb the pressing force or tensile force. Accordingly, a pressing reaction force, a tensile reaction force, and the like are applied to the fixed joint plates 107 and 108, and the fixed joint plates 107 and 108 are deformed by the pressing reaction force and the tensile reaction force, so that the joint plate structure The smooth expansion and contraction of 112 is hindered, and the airtightness of the joint plate structure 112 is reduced, and intrusion of rainwater, dust, or the like is caused from the outside 103 to the gap 102.

  In the wall expansion joint device 104, each of the movable joint plates 109 and 110, the front center joint plate 111, the support base 114a, the square pipe column 114b, and the pivot pin is added to the reinforcing structure 113 formed of a pantograph-like link mechanism. Since the weights of the coupling mechanism 114 and the slide structures 115 and 116 including the load 114c are loaded, the burden is large. For this reason, if the buildings 100 and 101 are relatively displaced in the left and right direction to be separated from each other and the reinforcing structure 113 is extended, and the beam rigidity is reduced, the reinforcing structure 113 is deformed. There is a possibility that smooth expansion and contraction of the reinforcing structure 113 is hindered.

  In the wall expansion joint device 104, as shown in FIG. 12, when the buildings 100 and 101 are relatively displaced in the left and right directions away from each other, both longitudinal ends of the front center joint plate 111 are moved to the movable joint plates 109 and 101, respectively. A large left and right space h is formed between both longitudinal ends of the front center joint plate 111 and the other longitudinal ends of the movable joint plates 109 and 110 apart from the other longitudinal end of the 110. There is a risk that a hand may be caught in the space h. That is, when the joint plate structure 112 extends, the degree of danger increases.

  The wall expansion joint device 104 includes a joint plate structure 112 and a pantograph-like link mechanism in a state in which the slide structures 115 and 116 are fixed to the surface of the square pipe support 114b in the connection mechanism 114. It is interposed between the structures 113. That is, since the slide structures 115 and 116 are in series with the connection mechanism 114 in the front and back direction, the dimension T in the front and back direction from the surface of the joint plate structure 112 to the back surface of the reinforcing structure 113 is set to each slide structure 115. , 116 substantially increases in dimension t in the front-back direction. Therefore, assembly work and installation work on site are difficult.

  That is, in the wall expansion joint device 104 described in Patent Document 1, it is not possible to expect smooth stretchability and excellent airtightness in the joint plate structure 112, and smooth expansion and contraction is also possible in the reinforcing structure 113. In addition to the fact that the joint plate structure 112 extends, the degree of danger increases, and the front and back dimension T from the surface of the joint plate structure 112 to the back of the reinforcing structure 113 is large. Assembling work and installation work are difficult.

  The present invention solves such a problem, and the object of the present invention is to enable smooth expansion and contraction of the joint plate structure and the reinforcing structure and to improve the airtightness of the joint plate structure. An object of the present invention is to provide a wall expansion joint device that can increase the safety when the joint plate structure is extended, avoid danger, and can be easily assembled and installed on site.

The present invention has two hinge pieces rotatably provided around a substantially vertical axis on a hinge pin having a substantially vertical axis, and one of the two hinge pieces is separated from each other with a gap therebetween. At least a pair of hinge members respectively fixed to two buildings adjacent to each other;
One end portion in the longitudinal direction is disposed on the back side facing the gap so as to be displaceable in the longitudinal direction of each of the fixed joint plates connected to the other hinge piece of the two hinge pieces of each hinge member. A pair of movable joint plates, a front center joint plate that covers each fixed joint plate from the front side so that both ends in the longitudinal direction overlap each fixed joint plate, and a back that both ends in the longitudinal direction cover each movable joint plate from the back side A joint plate structure with a central joint plate;
It is arranged on the back side of the joint plate structure facing the gap, and a plurality of link members are connected to each other so as to be angularly displaceable by link pins, and both longitudinal ends near the buildings are of the two hinge pieces of the hinge members A reinforcing structure composed of a pantograph-like link mechanism rotatably connected to the other hinge piece;
A connection mechanism that extends in the front and back direction at the longitudinal center of each of the joint plate structure and the reinforcing structure, and connects and fixes the joint plate structure to the reinforcing structure;
In the wall expansion joint device comprising a pair of slide structures that expand and contract following the relative displacement in the longitudinal direction of each fixed joint plate and each movable joint plate,
One end in the longitudinal direction of each fixed joint plate is fixed to a pair of reinforcing connecting members fixed to the other hinge piece of the two hinge pieces of each hinge member, and both ends in the longitudinal direction of the reinforcing structure Is pivoted,
Each slide structure is fixed by being divided into a fixed joint plate and a movable joint plate on both sides in the longitudinal direction of the coupling mechanism, making it impossible to separate the fixed joint plate and the movable joint plate in the front and back directions. And
The movable joint plate is disposed on the back side of the coupling mechanism facing the gap and is connected and fixed to the reinforcing structure integrally with the coupling mechanism, and each movable joint plate is placed on the back side so that both longitudinal end portions thereof overlap the movable joint plate. It is a wall expansion joint apparatus characterized by including the back center joint plate which covers from.

  The coupling mechanism of the present invention includes a reinforcing plate that is fixed to the back surface of the front center joint plate and extends substantially the entire length in the longitudinal direction of the front center joint plate.

  Each slide structure of the present invention includes one rail that is horizontally fixed to the back surface of each fixed joint plate and the other rail that is horizontally fixed to the back surface of each movable joint plate. It is characterized by being inserted into the other rail through a slit extending in the longitudinal direction provided in the movable joint plate so as to be detachable.

  According to the present invention, the displacement allowable range for allowing the displacement in the longitudinal direction of each fixed joint plate by a predetermined distance is divided between each of the fixed joint plate and each movable joint plate and both of the one rail and the other rail. The fixed joint plate and the movable joint plate, the one rail, and the other rail that interfere with each other when the fixed joint plate and the one rail are displaced in the longitudinal direction. Are disposed separately on each of the fixed joint plate and each of the movable joint plates and on one rail and the other rail, and the longitudinal direction of each movable joint plate. The other end is provided with a locking piece that can be engaged with a locking piece at both ends in the longitudinal direction of the back center joint plate.

  The present invention is characterized in that a space between the opposing wall surfaces of the two buildings and one longitudinal end of each fixed joint plate is closed by a seal structure having a packing made of an elastic body. .

  According to the present invention, the slide structure is divided and fixed to each fixed joint plate and each movable joint plate, so that separation between each fixed joint plate and each movable joint plate is restricted. Also, each fixed joint plate and each movable joint plate are overlapped with each other in the longitudinal direction from the front side, and both longitudinal ends of the back center joint plate are overlapped with each movable joint plate from the back side. The separation from the joint plate is restricted. Therefore, the airtightness between each fixed joint plate and each movable joint plate is increased. That is, the airtightness of the joint plate structure can be improved, and rainwater and dust can be reliably prevented from entering the gap from the outside. In this way, even if the joint plate structure expands following the relative displacement in the left-right direction in which the buildings are separated from each other by restraining the separation between each fixed joint plate and each movable joint plate. The high airtightness of the joint plate structure can be maintained.

  Each slide structure is divided and fixed to each fixed joint plate and each movable joint plate on both sides in the longitudinal direction of the coupling mechanism, so that each slide structure is juxtaposed in the longitudinal direction with the coupling mechanism. For this reason, the front and back dimensions from the front surface of the joint plate structure to the back surface of the reinforcing structure are reduced, which facilitates assembly work and installation on site.

  Each slide structure is divided and fixed to each fixed joint plate and each movable joint plate on both sides in the longitudinal direction of the connection mechanism, so that the weight of the connection mechanism, the back center joint plate, and the front center joint plate is included in the reinforcing structure. Only the load is applied, and the weight burden of the reinforcing structure is reduced. Therefore, even if the beam rigidity is lowered due to the extension of the reinforcing structure following the relative displacement in the left-right direction in which the buildings are separated from each other, the building is not deformed. And since the both ends of the longitudinal direction of a reinforcement structure are firmly hold | maintained at the reinforcement connection material, the beam rigidity fall at the time of expansion | extension is further suppressed. Therefore, smooth expansion and contraction of the reinforcing structure can be maintained.

  Since each fixed joint plate has one end in the longitudinal direction fixed to the reinforcing connecting member and is stably supported, an elastic sealing material conventionally used to maintain the support form of each fixed joint plate becomes unnecessary. . Therefore, even if relative displacement in the front-rear direction occurs in each building and one longitudinal end of each fixed joint plate rotates together with the other hinge piece of the two hinge pieces of each hinge member, No pressing reaction force or tensile reaction force caused by the elastic sealing material is applied, and deformation of each fixed joint plate due to the pressing reaction force or tensile reaction force can be avoided. Therefore, smooth expansion and contraction and high airtightness of the joint plate structure can be maintained.

  According to the present invention, since the reinforcing plate extending substantially the entire length in the longitudinal direction of the front center joint plate is fixed to the back surface of the front center joint plate, it is possible to suppress the occurrence of distortion or twist in the front center joint plate. . Therefore, smooth expansion and contraction of the joint plate structure can be maintained.

  Each slide structure of the present invention includes one rail that is horizontally fixed to the back surface of each fixed joint plate and the other rail that is horizontally fixed to the back surface of each movable joint plate. Since it is removably inserted into the other rail through a slit extending in the longitudinal direction provided in the movable joint plate, each building smoothly expands and contracts following the relative displacement in the left and right directions that are close to and away from each other.

  According to the present invention, the displacement permissible range for allowing the longitudinal displacement of each fixed joint plate by a predetermined distance is the fixed joint plate and each movable joint plate, and both the one rail and the other rail. Therefore, it is possible to follow the initial relative displacement in the left-right direction in which each building approaches and separates from each other by the displacement of each fixed joint plate and each rail in the longitudinal direction. In addition, in the relative displacement in the left and right direction after the initial time exceeding the allowable displacement range, each fixed joint plate and each movable joint plate and each one rail and each other rail are provided separately. The interfering bodies interfere with each other, so that both the fixed joint plate and the movable joint plate and the one rail and the other rail are simultaneously displaced in the longitudinal direction. Furthermore, the interfering members provided separately for each of the one rail and the other rail interfere with each other at the time of the relative displacement after the initial stage when the buildings are separated from each other, so that each one rail becomes each other. This prevents the fixed joint plate from coming off from the movable joint plate in the longitudinal direction, prevents the joint plate structure from being disassembled, and maintains smooth expansion and contraction. Also, each movable joint plate is provided with a locking piece engageable with a locking piece at both ends in the longitudinal direction of the back center joint plate at the other longitudinal end of each movable joint plate. Prevents the joint plate plate from coming out from between the center plate and the back center joint plate, prevents disassembly of the joint plate structure and maintains smooth expansion and contraction. Moreover, even if the joint plate structure is extended by the relative displacement in the left-right direction where the buildings are separated from each other, the longitudinal center of the front center joint plate and the other longitudinal end of each movable joint plate The left and right spaces are not formed. Therefore, the safety degree when the joint plate structure is extended can be increased.

  According to the present invention, the space between the wall surfaces of the two buildings facing each other and one longitudinal end portion of each fixed joint plate is closed by the seal structure having the packing made of an elastic body. The airtightness between the body and the mutually opposing wall surfaces of the two buildings can be ensured. In addition, relative displacement in the front-rear direction occurs in each building, and one end in the longitudinal direction of each fixed joint plate rotates with the other hinge piece of the two hinge pieces of the reinforcing connecting material and each hinge member, thereby fixing each fixed plate. Even if a pressing force that presses the seal structure against the wall surface at one end in the longitudinal direction of the joint plate or a tensile force that pulls the seal structure from the wall surface acts, the pressing force and tensile force are absorbed by the packing made of an elastic body. Can do. For this reason, no pressing reaction force or tensile reaction force is applied to each fixed joint plate, so that the deformation of each fixed joint plate due to the pressing reaction force or tensile reaction force does not occur, and the joint plate structure can be smoothly expanded and contracted and highly airtight. Can maintain sex.

  Hereinafter, a preferred embodiment of a wall expansion joint device according to the present invention will be described with reference to the drawings. FIG. 1A is a plan view of a wall expansion joint device according to the present invention, FIG. 1B is an enlarged view of a substantially left half portion of FIG. 1A, and FIG. 1C is FIG. 2 is an enlarged view of a substantially right half of FIG. 2, FIG. 2 is a partial back view seen from the gap side of FIG. 1A, FIG. 3 is an enlarged cross-sectional view taken along line AA of FIG. FIG. 5 is an enlarged cross-sectional view taken along line BB in FIG. 1B, and FIG. 5 is a partial perspective view of the left half viewed from the air gap side in FIG.

  1 to 5, the wall expansion joint device 1 of the present embodiment includes a pair of left and right edge members 5 and 6, a pair of left and right hinge members 15 and 16, and a pair of left and right reinforcing connecting members 17 and 18. A joint plate structure 26, a reinforcing structure 27, a coupling mechanism 28, and a pair of left and right slide structures 29 and 30 are provided.

  The pair of left and right edge members 5 and 6 are made of structural steel materials having a rectangular cross section that is embedded and fixed in two adjacent buildings 3 and 4 with a gap 2 between each other and that are long in the vertical direction. Become.

  Each of the buildings 3 and 4 is a high-rise building made of concrete used as an apartment house, a commercial multipurpose building, a hospital, a nursing home, a school, and the like, facing each other through the gap 2 interposed as a joint, and is the paper surface of FIG. The wall expansion joint device 1 is provided between the opposing wall surfaces 31 and 32 extending substantially in the vertical direction.

  The pair of left and right hinge members 15, 16 are made of stainless steel, and hinge pins 7, 8 having a substantially vertical axis, and two hinge pins 7, 8 that are rotatably provided around the substantially vertical axis. For hinges 9, 10, 11, and 12, one of the two hinge pieces 9, 10, 11, 12 serving as a fixed piece is a structure such as a long angle steel It is fixed to the edge members 5 and 6 via two connecting members 13 and 14 made of steel.

  The pair of left and right reinforcing connecting members 17 and 18 are made of a steel plate-shaped groove that is elongated in the vertical direction, and are movable fixed pieces of the two hinge pieces 9, 10, 11, 12 of the hinge members 15, 16. Is fixed to the other hinge pieces 10 and 12 functioning as

  The joint plate structure 26 includes a pair of left and right fixed joint plates 19 and 20 and a pair of left and right movable joint plates 21 disposed on the back side facing the gap 2 so as to be displaceable in the longitudinal direction of each of the fixed joint plates 19 and 20. 22 and a front center joint plate that is long in the vertical direction and covers each fixed joint plate 19, 20 from the front side facing the exterior 23 so that both ends in the longitudinal direction overlap with the other longitudinal end of each fixed joint plate 19, 20. 24 from the back side facing the air gap 2 so that both ends in the longitudinal direction are overlapped with the substantially central portions in the longitudinal direction of the movable joint plates 21 and 22 with a predetermined interval H (see FIG. 2) in the vertical direction. A plurality of back center joint plates 25 having a short vertical dimension covering the movable joint plates 21 and 22 (upper and lower in the example of FIG. 2), and the length of each of the fixed joint plates 19 and 20 Direction end portion is fixed engaged with the reinforcing connection member 17, 18.

  The fixed joint plates 19, 20, the movable joint plates 21, 22 and the front center joint plate 24 are made of an aluminum plate, and the back center joint plate 25 is made of a steel plate. Each fixed joint plate 19, 20 is provided with locking pieces 19 a, 20 a whose one end in the longitudinal direction is bent toward the gap 2, and the locking pieces 19 a are formed at the corners on the outer side 23 of the reinforcing connecting member 17 from the outside. The engaging piece 20a is engaged and fixed from the outside to the corner portion on the outer side 23 of the reinforcing connecting member 18 and fixed by the screw.

  As shown in FIGS. 1, 2, 5, and 6, each movable joint plate 21, 22 is provided with locking pieces 21 a, 21 b, 22 a, 22 b with both longitudinal ends bent to the gap 2 side. A slit 35 extending horizontally in the longitudinal direction is formed from the locking pieces 21a, 22a to the roots of the locking pieces 21b, 22b. The locking pieces 21a, 22a at one end are formed with notches 33 that allow the slide structures 29, 30 to be extended and retracted (see FIG. 5, but FIG. 5 shows the movable joint plate 21). Only the locking piece 21a is shown). The front center joint plate 24 is provided with locking pieces 24a and 24b whose both ends in the longitudinal direction are bent toward the gap 2 side, and the back center joint plate 25 is mounted with the center part in the longitudinal direction recessed into the gap 2 side. A seat 34 and locking pieces 25a, 25b are provided by bending both ends in the longitudinal direction to the outside 23 side.

  1 and 2, the reinforcing structure 27 is arranged on the back side facing the gap 2 of the joint plate structure 26, and constitutes a link mechanism in which a plurality of link members are pivotally supported in a pantograph shape so as to be angularly displaceable. Both ends in the longitudinal direction near the buildings 3 and 4 are rotatably connected to the reinforcing connecting members 17 and 18.

  The reinforcing structure 27 has a plurality of link members 27a to 27j made of a square tubular structural steel material, and a plurality of link pins 27k to 27w that pivotally support the link members 27a to 27j. The plurality of link pins 27k to 27w are made of pairs of bolts and nuts. In particular, the link pin 27q at the center part also has the function of the coupling mechanism 28. One end of the reinforcing structure 27 in the longitudinal direction is rotatably connected to the reinforcing connecting member 17 via a link pin 27k and a connecting member 36 (see FIG. 1b) made of a structural steel material such as angle steel. The other longitudinal end of 27 is rotatably connected to the reinforcing connecting member 18 via a link pin 27w and a connecting member 37 (see FIG. 1c) made of structural steel such as angle steel.

  As shown in FIGS. 1, 3, 5, and 6, the coupling mechanism 28 is disposed at the center portion in the longitudinal direction of the joint plate structure 26 and the reinforcing structure 27, thereby connecting the joint plate structure 26 to the reinforcing structure 27. Fixed to the back surface of the center center joint plate 24, the link pin 27q in the center, the strut 38 made of structural steel material having a U-shaped cross section and having a short vertical dimension. The front center joint plate 24 has a reinforcing plate 39 extending substantially the entire length in the longitudinal direction, and the reinforcing plate 39 has a groove shape in which attachment pieces 39a and 39b extending in the entire length in the longitudinal direction are provided at both upper and lower ends of the groove portion 39c. Made of steel plate.

  In the column 38 having a U-shaped cross section, a piece 38a (see FIG. 5) on the outside 23 side is provided with a notch 40 extending in the vertical center and the vicinity thereof, and a piece 38b on the gap 2 side is provided with a vertical direction. A through hole 41 is provided at the center. Accordingly, the relative position where the through-hole 41 of the support column 38 communicates with the through-hole 34a provided in the mounting seat 34 of the back center joint plate 25 is maintained, and the piece 38b on the space 2 side of the support column 38 is connected to the back center joint plate 25. 2 and the through hole 41, the through hole 34a, and the through hole (not shown) provided at the intersection of the link member 27e and the link member 27f shown in FIG. A bolt that constitutes the pin 27q is inserted, its tip is projected to the gap 2 side of the link member 27e, and a nut that is paired with the bolt of the link member 27f is screwed thereto, and in the column 38 of FIG. The back surface of the central portion in the longitudinal direction of the attachment pieces 39a and 39b of the reinforcing plate 39 is brought into contact with the surface of the central portion in the vertical direction of the piece 38a on the outside 23 side, and the attachment pieces 39a and 39b are externally connected by a plurality of screws 42. After fixing the three side pieces 38a and fixing the reinforcing plate 39 to the support column 38, the front center joint plate 24 is covered from the outside 23 side of the reinforcing plate 39, and the groove portion of the reinforcing plate 39 is formed on the back surface of the front center joint plate 24. As shown in FIGS. 8 (a) and 8 (b), both longitudinal ends of the reinforcing plate 39 are brought close to the locking pieces 24a and 24b at both longitudinal ends of the front center joint plate 24 as shown in FIGS. In this state, the reinforcing plate 39 is fitted into the front center joint plate 24 in a horizontal posture, and the front center joint plate 24 is fixed to the reinforcing plate 39 with a plurality of screws 43, so that the joint plate is placed on the outer side 23 of the reinforcing structure 27. The structure 26 is connected and fixed.

  1 to 6 and 8, each slide structure 29, 30 includes one rail 44, 45 horizontally fixed to the back surface of each fixed joint plate 19, 20, and each movable joint plate 21, 22. It consists of the other rails 46 and 47 horizontally fixed to the back surface, and the rails 44 and 45 are detachable in the longitudinal direction, and the front and back directions of the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 It is configured to expand and contract by following the relative displacement in the longitudinal direction between the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 by inserting the joint joints impossible.

  In FIG. 1 to FIG. 8, one rail 44, 45 and the other rail 46, 47 of each slide structure 29, 30 are made of an extruded material of aluminum alloy and are formed on both upper and lower sides of the back center joint plate 25. Closely placed horizontally.

  5, FIG. 6 and FIG. 7, each of the rails 44, 45 has a mounting leg portion 49 which is fixed to the back surface of each fixed joint plate 19, 20 by a plurality of countersunk screws 48, extending in the longitudinal direction. And a sliding portion 50 that is provided on the back side of the mounting leg portion 49 so as to project from both sides in the vertical direction. A lid plate 51 is fixed to the other longitudinal end of the sliding portion 50 by a plurality of screws 52. Yes.

  Each of the other rails 46, 47 has one end in the longitudinal direction facing a notch 33 formed in the locking piece 21 a, 22 a of each movable joint plate 21, 22, and the other end in the longitudinal direction is each movable joint plate 21, The movable joint plates 21 and 22 are fixed to the back surfaces of the movable joint plates 21 and 22 in a state of being close to the 22 locking pieces 21b and 22b. The other rails 46 and 47 oppose each other with a slit 35a having a vertical interval substantially equal to the vertical width of the slit 35, and a plurality of countersunk screws on the back surfaces of the movable joint plates 21 and 22. 53, and a pair of upper and lower base portions 54 and 55 fixed by 53, and a square groove portion 56 projecting in a square shape to the back side by connecting the base portions 54 and 55 across the slit 35a. With the mounting legs 49 of the rails 44 and 45 corresponding to the slits 35 and 35a and the sliding part 50 corresponding to the square grooves 56, the mounting legs 49 are connected to the slits 35 and 35a. By inserting 50 into each of the square grooves 56, the slide structures 29 and 30 can be inserted and removed so that they cannot be separated in the front and back directions. In the vicinity of one end portion in the longitudinal direction of the square groove portion 56 in each other rail 46, 47, the one side of each rail 44, 45 interferes with the cover plate 51 fixed to the other end portion in the longitudinal direction. A retaining screw 57 (see FIGS. 1B, 1C, and 5) is screwed to prevent the rails 44, 45 from coming out of the other rails 46, 47.

  8A and 8B, interfering bodies 58 and 59 having an L-shaped cross section are fixed to the locking pieces 21b and 22b at the other longitudinal ends of the movable joint plates 21 and 22 by a plurality of screws 60. Is done. As shown in FIGS. 1A to 1C, in the normal state where no relative displacement occurs in the buildings 3 and 4, the longitudinal direction of the fixed joint plates 19 and 20 in FIGS. The distance L1 between the end faces 19a, 20a and the interference surfaces 58a, 59a of the L-shaped cross-section interference bodies 58, 59, and the distance L2 between the cover plate 51 and the retaining screw 57 in each slide structure 29, 30 [FIG. (See (b), (c)), and the distance L1 and the distance L2 are the horizontal direction in which the buildings 3 and 4 are close to and away from each other, and the horizontal direction on the virtual horizontal plane. When the relative displacement is performed in the vertical front-rear direction, the fixed joint plates 19 and 20 function as a displacement allowance area that allows the displacement in the longitudinal direction by a predetermined distance. That is, the displacement allowable range that allows the longitudinal displacement of each fixed joint plate 19, 20 by a predetermined distance (corresponding to L 1, L 2) is both the fixed joint plate 19, 20 and each movable joint plate 21, 22 and Each of the rails 44 and 45 and the other rails 46 and 47 are provided separately.

  When the buildings 3 and 4 are relatively displaced in the directions close to each other and the longitudinal displacement of the fixed joint plates 19 and 20 exceeds the allowable displacement range corresponding to the L1, the fixed joint plates 19 and 20 The other end surfaces 19a, 20a in the longitudinal direction interfere with the interference surfaces 58a, 59a of the interference bodies 58, 59 having an L-shaped cross section, so that each fixed joint plate 19, 20, each movable joint plate 21, 22, and one rail 44 45 and the other rails 46 and 47 are simultaneously displaced in the longitudinal direction. That is, when the fixed joint plates 19 and 20 exceeding the allowable displacement range are displaced in the longitudinal direction, the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 and one of the rails 44 and 45 The other rails 46 and 47 are composed of the other longitudinal end surfaces 19a and 20a of the fixed joint plates 19 and 20 and the interference surfaces 58a and 59a of the interference bodies 58 and 59 for simultaneously displacing the other rails 46 and 47 in the longitudinal direction. The interference body 61 is provided separately for each of the fixed joint plates 19 and 20 and each of the movable joint plates 21 and 22.

  1 (a) to 1 (c), the buildings 3 and 4 are greatly displaced relative to each other in the direction away from each other, and the displacement allowance range in which the longitudinal displacements of the fixed joint plates 19 and 20 correspond to the L2 is set. If it exceeds, the cover plate 51 in each slide structure 29, 30 interferes with the retaining screw 57, and each fixed joint plate 19, 20, each movable joint plate 21, 22, each one rail 44, 45 and each other. The rails 46 and 47 are simultaneously displaced in the longitudinal direction. That is, when the fixed joint plates 19 and 20 exceeding the allowable displacement range are displaced in the longitudinal direction, the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 and one of the rails 44 and 45 Interference bodies 62 composed of a cover plate 51 and retaining screws 57 for simultaneously displacing the other rails 46, 47 in the longitudinal direction are provided as one rail 44, 45 and the other rail 46, 47 is divided and provided.

  A seal structure 63 closes the space between the mutually opposing wall surfaces 31, 32 of the two buildings 3, 4 and one longitudinal end of each fixed joint plate 19, 20. The seal structure 63 includes, for example, a long packing 63a made of an elastic material such as neoprene or elastomer, a long packing holding member 63b made of a bowl-shaped steel plate, and a long material 63c made of a square hollow structural steel material. The long packing 63a is bonded to the wall surfaces 31 and 32 and the packing holding member 63b and interposed between the wall surfaces 31 and 32 and the packing holding member 63b. The base of the packing holding member 63b is screwed to the connecting member 13. The long material 63c screwed to the front end bent portion of the packing holding member 63b is pressed against one end in the longitudinal direction of each fixed joint plate 19, 20 by the elasticity of the packing 63a.

  Next, the operation of the wall expansion joint device 1 having the above-described configuration will be described.

  1 and 2 show the horizontal direction in which the buildings 3 and 4 approach and leave each other, and the horizontal direction in the front-rear direction on the virtual horizontal plane (the direction perpendicular to the paper surface in FIGS. 1 and 2). In this normal state, the outside 23 and the gap 2 are blocked by the joint plate structure 26 and the seal structure 63, and rainwater and dust from the outside 23 to the gap 2 are shown. To prevent intrusion.

  When the buildings 3 and 4 are relatively displaced in the direction in which they are close to each other, in the initial stage, the fixed joint plates 19 and 20 and the one rails 44 and 45 in FIGS. 8A and 8B are in the longitudinal direction. Following the displacement by a distance L1 toward the other end side, the outside 23 and the gap 2 are blocked, and rainwater and dust are prevented from entering the gap 2 from the outside 23. The dimension in the longitudinal direction of the reinforcing structure 27 is reduced corresponding to (2 · L1).

  In the process in which the buildings 3 and 4 are relatively displaced from the initial relative displacement to the closest state as shown in FIG. 9, the longitudinal displacements of the fixed joint plates 19 and 20 are shown in FIGS. When the displacement allowable range corresponding to the distance L1 of b) is exceeded, the other longitudinal end surfaces 19a, 20a of the fixed joint plates 19, 20 interfere with the interference surfaces 58a, 59a of the L-shaped cross-section interference bodies 58, 59a. Thus, the fixed joint plates 19 and 20, the movable joint plates 21 and 22, the one rails 44 and 45, and the other rails 46 and 47 are simultaneously displaced toward the other end in the longitudinal direction. In other words, the interference bodies 61 that are divided and provided on each of the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 interfere with each other so that the relative displacements of the buildings 3 and 4 after the initial stage are reduced. The external 23 and the gap 2 are blocked, and rainwater and dust are prevented from entering the gap 2 from the external 23. The longitudinal dimension of the reinforcing structure 27 is [(2 · L1) + (2 · each fixed joint plate 19, 20 and each movable joint plate 21, 22 and each one rail 44, 45 and each other rail 46, 47 corresponding to the simultaneous displacement amount 47)].

  When the buildings 3 and 4 are relatively displaced from the normal state shown in FIG. 1 and FIG. 2, in the initial stage, the fixed joint plates 19 and 20 in FIGS. Each one of the rails 44 and 45 follows by being displaced by a distance L2 toward one end in the longitudinal direction, shuts off the outside 23 and the gap 2, and enters rainwater and dust from the outside 23 into the gap 2. To prevent. The dimension in the longitudinal direction of the reinforcing structure 27 is enlarged corresponding to (2 · L2).

  In the process in which the buildings 3 and 4 are relatively displaced from the initial relative displacement to the most distant state as shown in FIG. 10, the displacement allowance in which the longitudinal displacement of the fixed joint plates 19 and 20 corresponds to the distance L2. When the range is exceeded, the lid plate 51 in each slide structure 29, 30 interferes with the retaining screw 57, and each fixed joint plate 19, 20, each movable joint plate 21, 22, and one rail 44, 45, The other rails 46 and 47 are simultaneously displaced toward the one end side in the longitudinal direction. In other words, the interference bodies 62 provided separately in each of the one rails 44 and 45 and the other rails 46 and 47 interfere to follow the relative displacements of the buildings 3 and 4 after the initial stage. Then, the outside 23 and the gap 2 are shut off to prevent rainwater and dust from entering the gap 2 from the outside 23. The longitudinal dimension of the reinforcing structure 27 is [(2 · L2) + (2 · the fixed joint plates 19 and 20, the movable joint plates 21 and 22, the one rails 44 and 45, and the other rail 46). , 47 simultaneous displacement amounts)]. Further, the locking pieces 21b and 22b at the other longitudinal ends of the movable joint plates 21 and 22 are engaged with the locking pieces 25a and 25b at both longitudinal ends of the back center joint plate 25 as interference pieces. Therefore, both the movable joint plates 21 and 22 and the other rails 46 and 47 are prevented from slipping out between the front center joint plate 24 and the back center joint plate 25.

  In addition, the expansion joint for walls when each building 3 and 4 is relatively displaced from the normal state shown in FIGS. 1 and 2 in the front-rear direction (the direction perpendicular to the paper in FIGS. 1 and 2) on the horizontal horizontal virtual plane. The inclination of the device 1 in the front-rear direction is realized by rotating the other hinge piece 10, 12 of each hinge member 15, 16 around the vertical axis of the hinge pins 7, 8, and in this case, each fixed joint plate 19. 20 and each movable joint plate 21, 22 and each one rail 44, 45 and each other rail 46, 47 follow the relative displacement of each building 3, 4 in the direction away from each other, the wall expansion and contraction It is made by relative displacement on an inclined line in the front-rear direction of the joint device 1.

  According to the present invention, each of the slide structures 29 and 30 is divided and fixed to the fixed joint plates 19 and 20 and the movable joint plates 21 and 22, so that the fixed joint plates 19 and 20 and the movable joint plates are fixed. The separation from the plates 21 and 22 is restricted. Further, the locking pieces 24a and 24b at both ends in the longitudinal direction of the front center joint plate 24 are overlapped from the front side to the other longitudinal ends of the fixed joint plates 19 and 20, respectively. The separation between the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 is also restrained by the overlapping of the locking pieces 25a and 25b at both ends in the longitudinal direction of the back center joint plate 25 from the back side. It will be. Therefore, the airtightness between the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 is increased. That is, the airtightness of the joint plate structure 26 can be improved, and rainwater and dust can be reliably prevented from entering the gap 2 from the outside 23. In this way, the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 are restrained from separating, so that the buildings 3 and 4 follow the relative displacement in the left and right directions away from each other. Even if the joint plate structure 26 is extended, the high airtightness of the joint plate structure 26 can be maintained.

  The slide structures 29 and 30 are divided and fixed to the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 on both sides in the longitudinal direction of the coupling mechanism 28, so that the slide structures 29 and 30 are The connecting mechanism 28 is juxtaposed in the longitudinal direction. Therefore, the dimension T1 (see FIG. 1a) in the front and back direction from the surface of the joint plate structure 26 to the back surface of the reinforcing structure 27 composed of the pantograph-like link mechanism is larger than the conventional dimension T in the front and back direction (see FIG. 11). As a result, the assembly work and the installation work at the site are facilitated.

  The slide structures 29 and 30 are divided and fixed to the fixed joint plates 19 and 20 and the movable joint plates 21 and 22 on both sides in the longitudinal direction of the coupling mechanism 28, so that the reinforcing structure 27 has a central portion. Only the weight of the connecting mechanism 28 including the link pin 27q, the column 38, and the reinforcing plate 39, the back center joint plate 25, and the front center joint plate 24 is loaded, and the weight burden of the reinforcing structure 27 is reduced. Is done. Accordingly, the reinforcement structure 27 extends following the relative displacement in the left-right direction in which the buildings 3 and 4 are separated from each other, so that the building does not deform even if the beam rigidity is lowered. In addition, since both ends in the longitudinal direction of the reinforcing structure 27 are pivotally attached to the reinforcing connecting members 17 and 18 via the link pin 27k and the connecting member 36, and the link pin 27w and the connecting member 37, they are firmly held. Further reduction in beam rigidity during extension is suppressed. Therefore, smooth expansion and contraction of the reinforcing structure 27 can be maintained.

  Since each fixed joint plate 19, 20 has one end in the longitudinal direction fixed to the reinforcing connecting members 17, 18 and is stably supported, the elasticity used to maintain the support form of each fixed joint plate conventionally. No sealing material is required. Therefore, relative displacement in the front-rear direction occurs in each building 3, 4, and one longitudinal end of each fixed joint plate 19, 20 is the other hinge piece 10, 12 of the two hinge pieces of each hinge member 15, 16. Even if it rotates together, the pressing reaction force and tensile reaction force caused by the elastic sealing material are not applied to the fixed joint plates 19 and 20, and the fixed joint plates 19 and 20 caused by the pressing reaction force and the tensile reaction force are not applied. Deformation can be avoided. Therefore, the smooth expansion and contraction and high airtightness of the joint plate structure 26 can be maintained.

  According to the present invention, the reinforcing plate 39 extending substantially the entire length in the longitudinal direction of the front center joint plate 24 is fixed to the back surface of the front center joint plate 24, so that the front center joint plate 24 is distorted or twisted. Can be suppressed. Therefore, the smooth expansion and contraction of the joint plate structure 26 can be maintained.

  Each slide structure 29, 30 of the present invention is horizontally fixed to one rail 44, 45 horizontally fixed to the back surface of each fixed joint plate 19, 20, and to the back surface of each movable joint plate 21, 22. Since the other rails 46 and 47 are provided, the one rails 44 and 45 are removably inserted into the other rails 46 and 47 through slits 35 extending in the longitudinal direction provided on the movable joint plates 21 and 22. The buildings 3 and 4 smoothly expand and contract following the relative displacement in the left-right direction that is close to and away from each other.

  According to the present invention, the interfering body 62 provided separately on each of the one rails 44 and 45 and the other rails 46 and 47 is provided after the initial stage when the buildings 3 and 4 are separated from each other. The one rails 44 and 45 come out of the other rails 46 and 47 and the fixed joint plates 19 and 20 are detached from the movable joint plates 21 and 22 in the longitudinal direction. This prevents the joint plate structure 26 from being disassembled and maintains smooth expansion and contraction. Further, locking pieces 21b and 22b that can be engaged with the locking pieces 25a and 25b at both ends in the longitudinal direction of the back center joint plate 25 are provided at the other longitudinal ends of the movable joint plates 21 and 22. Thus, each movable joint plate 21, 22 is prevented from slipping out between the front center joint plate 24 and the back center joint plate 25, so as to prevent the joint plate structure 26 from being disassembled and to maintain smooth expansion and contraction. work. Moreover, even if the joint plate structure 26 is extended by the relative displacement in the left and right direction in which the buildings 3 and 4 are separated from each other, both longitudinal ends of the front center joint plate 24 and the movable joint plates 21 and 22 are extended. The left and right spaces are not formed between the other ends in the longitudinal direction. Therefore, the safety degree when the joint plate structure 26 is extended can be increased.

  According to the present invention, the distance between the mutually opposing wall surfaces 31 and 32 of the two buildings 3 and 4 and one longitudinal end of each fixed joint plate 19 and 20 is made of an elastic body such as neoprene or elastomer. Since it is closed by the seal structure 63 having the long packing 63a, it is possible to ensure airtightness between the joint plate structure 26 and the mutually opposing wall surfaces 31, 32 of the two buildings 3, 4. Moreover, relative displacement in the front-rear direction occurs in each building 3, 4, and one longitudinal end portion of each fixed joint plate 19, 20 is out of the two hinge pieces of the reinforcing connecting members 17, 18 and the hinge members 15, 16. By rotating together with the other hinge pieces 10, 12, the pressing force for pressing the seal structure 63 against the wall surfaces 31, 32 at one end in the longitudinal direction of each fixed joint plate 19, 20 or the seal structure 63 is changed to the wall surface 31, 20. Even if the tensile force pulled from 32 acts, these pressing force and tensile force can be absorbed by the packing 63a made of an elastic body. Therefore, no pressing reaction force or tensile reaction force is applied to each fixed joint plate 19, 20, so that the deformation of each fixed joint plate 19, 20 due to the pressing reaction force or tensile reaction force does not occur, and the joint plate structure 26. Can maintain smooth stretch and high airtightness.

FIG. 1A is a plan view of a wall expansion joint device according to the present invention, FIG. 1B is an enlarged view of a substantially left half portion of FIG. 1A, and FIG. 1C is FIG. It is an enlarged view of the substantially right half part. It is the partial back view seen from the space | gap side of Fig.1 (a). It is an expanded sectional view which follows the AA line of FIG.1 (b). It is an expanded sectional view which follows the BB line of FIG.1 (b). It is the partial perspective view of the left half part seen from the space | gap side of Fig.1 (a). It is explanatory drawing which expands and shows the relationship between each slide structure, each fixed joint plate, and each movable joint plate. It is a perspective view which shows the attachment state of the cover board with respect to one rail. FIG. 8A is an enlarged plan view showing a part of the joint plate structure, FIG. 8A is an enlarged plan view of the left half, and FIG. 8B is an enlarged plan view of the right half. It is a top view which shows the expansion joint apparatus for walls when a space | gap is shrink | contracted most by mutual proximity | contact of each building. It is a top view which shows the expansion joint apparatus for walls when a space | gap expands most by mutual separation of each building. It is a top view which shows an example of the conventional expansion joint apparatus for walls. It is a top view which shows the conventional expansion joint apparatus for walls when a space | gap is shrink | contracted most by mutual proximity | contact of each building.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall expansion joint apparatus 2 Space | gap 3 Building 4 Building 7 Hinge pin 8 Hinge pin 9 One hinge piece 10 The other hinge piece 11 One hinge piece 12 The other hinge piece 15 Hinge member 16 Hinge member 17 Reinforcement connection material 18 Reinforcement connection material 19 Fixed joint plate 20 Fixed joint plate 2l Movable joint plate 2lb Locking piece (interference piece)
22 Movable joint plate 22b Locking piece (interference piece)
23 External 24 Front center joint plate 25 Back center joint plate 25a Locking piece (interference piece)
25b Locking piece (interference piece)
26 Joint plate structure 27 Reinforcement structure 27a to 27j Link member 27k to 27w Link pin 28 Connection mechanism 29 Slide structure 30 Slide structure 31 Wall surface of building 32 Wall surface of building 39 Reinforcement plate 44 One rail 45 One rail 46 The other rail 47 The other rail 61 Interference body 62 Interference body 63 Seal structure 63a Packing

Claims (5)

A hinge pin having a substantially vertical axis has two hinge pieces rotatably provided about the substantially vertical axis, and one of the two hinge pieces is adjacent to each other with a gap therebetween. At least a pair of hinge members each fixed to one building;
One end portion in the longitudinal direction is disposed on the back side facing the gap so as to be displaceable in the longitudinal direction of each of the fixed joint plates connected to the other hinge piece of the two hinge pieces of each hinge member. A pair of movable joint plates, a front center joint plate that covers each fixed joint plate from the front side so that both ends in the longitudinal direction overlap each fixed joint plate, and a back that both ends in the longitudinal direction cover each movable joint plate from the back side A joint plate structure with a central joint plate;
It is arranged on the back side of the joint plate structure facing the gap, and a plurality of link members are connected to each other so as to be angularly displaceable by link pins, and both longitudinal ends near the buildings are of the two hinge pieces of the hinge members A reinforcing structure composed of a pantograph-like link mechanism rotatably connected to the other hinge piece;
A connection mechanism that extends in the front and back direction at the longitudinal center of each of the joint plate structure and the reinforcing structure, and connects and fixes the joint plate structure to the reinforcing structure;
In the wall expansion joint device comprising a pair of slide structures that expand and contract following the relative displacement in the longitudinal direction of each fixed joint plate and each movable joint plate,
One end in the longitudinal direction of each fixed joint plate is fixed to a pair of reinforcing connecting members fixed to the other hinge piece of the two hinge pieces of each hinge member, and both ends in the longitudinal direction of the reinforcing structure Is pivoted,
Each slide structure is fixed by being divided into a fixed joint plate and a movable joint plate on both sides in the longitudinal direction of the coupling mechanism, making it impossible to separate the fixed joint plate and the movable joint plate in the front and back directions. And
The movable joint plate is disposed on the back side of the coupling mechanism facing the gap and is connected and fixed to the reinforcing structure integrally with the coupling mechanism, and each movable joint plate is placed on the back side so that both longitudinal end portions thereof overlap the movable joint plate. A wall expansion joint device comprising a back center joint plate that covers the wall. In the expansion joint apparatus for walls of Claim 1,
The expansion mechanism for a wall according to claim 1, wherein the coupling mechanism includes a reinforcing plate that is fixed to the back surface of the front center joint plate and extends substantially the entire length in the longitudinal direction of the front center joint plate. In the expansion joint apparatus for walls of Claim 1 or Claim 2,
Each slide structure includes one rail horizontally fixed to the back surface of each fixed joint plate and the other rail fixed horizontally to the back surface of each movable joint plate, and one rail is each movable joint plate. A wall expansion joint device, wherein the expansion joint device is inserted into the other rail through a slit extending in the longitudinal direction provided in the plate. In the expansion joint apparatus for walls of Claim 1, Claim 2 or Claim 3,
Displacement allowance areas that allow a predetermined distance of displacement in the longitudinal direction of each fixed joint plate are provided separately for both the fixed joint plate and each movable joint plate and both the one rail and the other rail. The fixed joint plate and one rail that exceed the allowable displacement range interfere with each other in the longitudinal direction, and the fixed joint plate, each movable joint plate, one rail, and the other rail are simultaneously displaced in the longitudinal direction. Interference bodies are provided separately for each fixed joint plate and each movable joint plate, and for each of the one rail and the other rail, and at the other longitudinal end of each movable joint plate. An expansion joint device for a wall, characterized in that a locking piece that can be engaged with a locking piece at both ends in the longitudinal direction of the back center joint plate is provided. In the expansion joint apparatus for walls of Claim 1, Claim 2, Claim 3 or Claim 4,
An expansion joint for a wall characterized in that a space between the opposing wall surfaces of the two buildings and one longitudinal end of each fixed joint plate is closed by a seal structure having a packing made of an elastic body apparatus.

Images