JPH094068A - Expansion joint - Google Patents

Abstract

PURPOSE: To close a clearance between adjacent skeleton and respond to fluctuation of both skeletons and thereby, absorb the fluctuations, and pursue for a simpler and easier execution of work, reliability of anchorage and stability of an anchored state. CONSTITUTION: A bolt support projecting piece 1b is projectingly installed to a clearance area between skeletons. A fixing member 1, which forms a bolt insertion hole 1c in the projecting piece 1b, is fixed to one skeleton A while the fixing member 2 is anchored with an adjacent skeleton B having a clearance, thereby spanning a holder 3 between both fixing members. The holder 3 provides a cavity area 3f, which is opposed to the projecting piece 1b, in the intermediate part of a top board 3a, thereby forming a bolt insertion hole 3g in the cavity area and bend-forming side pieces 3b and 3c on both sides. The holder 3 locks a bolt 4 insertingly, which interposes a spring 5 between the projecting piece 1b and the cavity area 3f and connected to the fixing member 1 and coats a cover 6 outside the holder 3, thereby locking the intermediate area of the cover with the holder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint which is capable of absorbing a gap between two skeletons of a building so that the gap between the two skeletons can be absorbed.

[0002]

2. Description of the Related Art Structure gaps in buildings, such as walls to walls, roofs to roofs, and other adjacent parallel planes or adjacent cross planes, are closed by directly fixing rigid bodies. If it is set, it becomes impossible to deal with the fluctuation (shift) of the structure due to the expansion and contraction of the building and the ground change. In consideration of such a point, for example, both ends of a spring member having a substantially W-shaped cross section are fixed to opposite ends of the body, while the W-shaped intermediate portion of the spring member is fitted with the back surface side of the cover member. An expansion joint is known in which the cover member is fixed and the cover member is pressed against the skeleton side by utilizing the spring pressure, and the fluctuation between the skeletons is absorbed by the spring member. Also, unlike such a W-shaped spring, bolts are erected at both ends of the body, a holder is connected to the bolts via springs, and a cover body is attached to the holder. A configuration is also proposed.

[0003]

However, in the expansion joint such as the former, since both ends of the W shape are fixed, the central portion is apt to be urged upward due to the elastic stress, and the central portion is urged upward. Since the cover body is fastened to the, the edge portion of the cover body is easily separated from the body surface due to some external pressure. In this case, wind may blow into the inside from the side edge of the cover body, and the cover body may be covered by wind pressure.Because the fastening portion is the center of the back surface of the cover body, the fastening portion receives wind pressure and separates. However, there was an inconvenience that could not be confirmed. Further, since the allowable range of the elastic deformation of the W shape is small, the deformation width is limited, and the spring is easily damaged by the fluctuation of the W shape in the vertical direction, and the sliding of the body gap in the longitudinal direction can hardly be absorbed. There were problems such as. Since the expansion joint like the latter supports one holder on both sides with two bolts, the fluctuation range is regulated by two bolts and the engagement between each bolt and the bolt support part is restricted. There is a problem in that it may be damaged by being received, and further, sliding in the longitudinal direction of the body gap cannot be absorbed.

The present invention eliminates the above-mentioned drawbacks, pursues further simplicity of construction, certainty of fixation, and stability of the fixation state, and there is no fear of separation due to wind pressure or the like. It is an object of the present invention to provide an expansion joint capable of sufficiently absorbing the variation between the skeletons in both narrow and wide ranges, and particularly the variation in the depth direction of the skeleton gap and the longitudinal direction of the skeleton gap.

[0005]

In order to achieve the above-mentioned object, the expansion joint of the present invention comprises a fixing member fixed to an adjacent skeleton portion, and one of the fixing members has a protrusion for supporting a bolt at a skeleton gap side. A holder is formed by projecting a piece and straddling the one fixing member and the other fixing member, and the holder inserts a bolt between the intermediate portion and the protruding piece with a spring interposed. It is characterized in that it is configured such that the cover body that is mounted by the above method and covers both the skeletons is covered on the outside of the holder, and the cover body is fixed to the holder. In the above configuration, the width of the holder and the cover body are made different so that both ends of the holder do not reach the both sides of the cover body, and the middle portion of the cover body is fixed to the holder. preferable.

The projecting piece can be formed integrally with the fixing member, or can be formed as a separate member, and the base end portion of the projecting piece can be fitted to the projecting piece forming portion of the fixing member in advance. The protrusion can be fitted in the groove, and the protrusion can slide, but the protrusion can be configured not to be pulled out in the protruding direction. It is preferable that both ends of the holder are bent and the ends of the bent pieces are formed so as to be capable of contacting the outer surface of the fixing member. The holder end on the one fixing member side is the fixing member surface. Can be slidably abutted with, or can be in an engaged state with a locking portion formed on the surface of the fixed member,
It is more preferable that at least the other holder end portion on the side of the fixing member is a folded end portion in which the tip is formed in a folded shape.
Further, the bolt insertion surface of the holder is preferably formed as a concave surface having an appropriate width.

In the one fixing member, a sheet fastening portion for fastening one end of the waterproof sheet is provided at a fixing member portion inward of the body gap of the projecting piece, and a body gap side end portion of another fixing member. A sheet fastening portion for fastening the other end of the waterproof sheet can be provided on the.

The bolt is a bolt having a bolt head at one end and a stopper blade which is axially fixed to the shaft orthogonal to the bolt shaft at its tip and is rotatable in the direction orthogonal to the bolt shaft. After installing a coiled spring on the shaft,
It is preferable that the tip side is inserted into the fixing member and the holder, and then the stopper blade is rotated orthogonally to be locked to the holder. It is also possible to use a bolt having a bolt head at one end, having a spring attached thereto in the same manner as described above, and having a nut or a cap nut fixed to the tip end portion.

[0009]

[Function] The holder extending over both the skeletons is bolted to only one fixing member fixed to one skeleton side via the spring, and the cover body is attached to this holder. Both ends of the holder and the cover body are pressed against both the core bodies, so that no gap is created between the cover body and the body surface. Moreover, even if the body is displaced in the body gap width direction or the body gap depth direction, the holder end that is not bolted can slide to the other body side in the pressure contact state, so the body movement is sufficiently absorbed. Even if it shifts in the longitudinal direction of the body gap, since the other side of the holder is not bolted, the holder can rotate freely, and the cover body is not fitted in the holder, so it can be held without deforming the cover body. it can.

When the projecting piece for supporting the bolt is a separate member,
Since it is also possible to slide the protrusion, the mounting position can be adjusted and the mounting work can be moved, and the work can be simplified. When the end portion of the holder is a folded end portion, the end portion can move over the fixing member and be displaced, and can also return to the fixing member, so that a wide fluctuation range is allowed. it can. The configuration in which the holder end portion is locked to the locking portion of the fixed member surface is particularly advantageous when the adjacent body surfaces are cross-shaped such as orthogonal surfaces. In the case of the structure using the bolt with the stopper blade, it is more effective in both the mounting workability and the fixing stability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The expansion joint as the first embodiment of the present invention is, as shown in FIGS. 1 to 4, a fixing member 1, which is fixed to the frame gap edges of the outer side surfaces of the adjacent frames A and B, respectively.
2, a holder 3 of an appropriate width that is connected to one fixing member 1 across both fixing members 1 and 2, fixing member 1 and holder 3
A long cover body 6 which covers the bolt 4 connecting the and via the spring 5 and the holder 3 so as to be fixed to the holder and closes the body gap is a main constituent member.

The fixing member 1 is made of aluminum, stainless steel, or other appropriate metal material, can be joined to the outer surface of the end of the skeleton A, and has an appropriate width in the skeleton gap width direction and an appropriate length in the skeleton gap longitudinal direction. A fixed surface 1a having a length of 10 mm, and long holes (long in the width direction) for inserting anchor bolts are formed in the fixed surface 1a at appropriate intervals.
The projecting piece 1b is formed so as to extend in an appropriate length from the edge portion on the side of the body gap into the body gap, and the projecting piece 1b is fragmented at an appropriate interval along the edge of the fixed surface 1a. Protruding from the
A bolt insertion hole 1c is formed in the projecting piece 1b, and an engaging portion 1d for locking the end of the waterproof sheet formed along the side face of the body gap is integrally formed on the inner side of the rear side (back side of the body gap). It has become. The protrusions 1b are formed at appropriate intervals so that the holders 3 can be easily installed along the body gap, but it is arbitrary whether all the protrusions 1b are connected to the holders 3 or every suitable number. is there. The other fixing member 2
Is made of the same material and has a fixing surface 2a fixed to the outer side surface of the rim of the skeleton B with anchor bolts and the like, and extends from one edge of the fixing surface 2a into the skeleton of the skeleton to extend the waterproof sheet end. The engaging portion 2b for stopping is integrally formed.

The holder 3 is made of the same metal material as described above, and has a width such that both ends can abut on the fixing surfaces 1a and 2a of the two fixing members 1 and 2 straddling both the skeletons A and B. The side plate portions 3b and 3c are formed by bending both ends of the top plate portion 3a which has an appropriate short length in the longitudinal direction of the body gap, and one side piece portion 3b is substantially orthogonal and the tip end portion is formed. A swollen end 3d that abuts on the fixed surface 1a and is easy to slide, and the other side piece 3c is an outwardly flared inclined piece, and the tip is folded back and abutted on the fixed surface 2a to slide. An easily folded end portion 3e is formed, and a portion closer to one side piece portion 3b than the middle of the top plate portion 3a is bent into a U-shaped cross section to form a concave portion 3f, and the concave portion 3f is formed in the bottom surface of the concave portion 3f. An insertion hole 3g for the bolt 4 is formed, and some convex portions 3h are provided at the intermediate portion and both end portions of the top plate portion 3a, and the rear surface of the cover body 6 abuts on each convex portion 3h. It is formed as.

As shown in FIG. 4, the bolt 4 has a bolt shaft 4a of an appropriate length set so as to absorb the deviation between the two bodies A and B, and a spring 5 is provided at the base end thereof. A bolt head 4b that can lock one end of the
c, and a shaft stopper is provided in an intersecting shape across the bifurcated portion, and a rod-shaped or elongated plate-shaped stopper blade 4d is rotatably attached to the shaft stopper so that the stopper blade 4d is coaxial with the bolt. In the case of, it is formed to have an appropriate length, and in the case of the crossing direction, both ends are projected in a T shape or a cross shape with respect to the bolt shaft 4a so that the other end of the spring 5 can be locked. , The part closer to one end is pivoted so that it is easier to operate,
A hole 4e is formed near the tip of the other end projecting long. The hole 4e can be used for hooking a thin rod jig here and rotating the stopper blade. Although the above bolt is preferably a simple rod which is not externally threaded, it may be externally threaded, and the bolt in the present invention is not limited in this respect.

The bolt 4 may be constructed such that a male screw is formed at least near the tip and a nut or a cap nut is screwed to the tip. However, the bolt 4 with a stopper blade is more excellent in consideration of the burden of tightening the nut, the looseness of the nut over time, the presence of an unnecessary protruding portion on the bolt tip side, and the like.

The spring 5 is a coil-shaped compression spring having a size that can be attached to the bolt shaft 4a of the bolt 4 and a length sufficient to absorb the deviation between the bodies A and B.
Is inserted into the projection 1b and the recessed portion 3f of the holder 3 and fixedly attached, the bolt head 4a and the projection 1b are appropriately compressed and interposed, and further compressed and expanded from the mounted state. It is set so that it can be performed with sufficient elasticity.
The spring 5 is most preferably the above coil spring, but is a strip-shaped spring having a bolt insertion hole formed at each central portion of a continuous V-shaped folded piece and locking pieces formed at both upper and lower ends, or a dogleg shape. It is possible to have a suitable structure such as a strip leaf spring in which locking pieces are formed opposite to each other at both ends and a bolt insertion hole is formed in this locking piece, or a strip leaf spring having a W shape.

The cover body 6 is made of aluminum, stainless steel or any other suitable metal material, and has a width and a long length sufficient to cover the space between the body and the outside of the fixing members 1 and 2 fixed to both bodies. The surface plate 6a, the side portions 6b and 6b formed by bending both width ends thereof, and the base portions of the seal members 6c and 6c capable of following deformation by contacting the body surface in the tip direction of the side portions 6b and 6b. It is fixed and formed. The seal member 6c may be formed of a rubber material, a foam material, a leaf spring material, or the like in an appropriate shape that is elastically deformable or expandable. In addition, the protruding tongue piece 6d is provided on the inside or outside of the seal member 6c.
The protruding tongue piece 6d can also be brought into pressure contact with the body surface to perform an auxiliary function of closing the gap.

In the expansion joint having the above structure, first, the fixing members 1 and 2 are fixed to the end portions of the skeletons A and B by anchor bolts or the like. Next, the holder 3 is straddled between the fixing members 1 and 2 at a portion of the protruding piece 1b at an appropriate position which protrudes from the one fixing member 1 into the body gap, and the protruding piece 1
From the inner side of the body gap of b, the tip of the bolt 4 on which the spring 5 is mounted is attached to the projecting piece 1b and the holes 1c and 3g of the concave portion 3f of the holder 3
When the stopper blade 4d is rotated in a direction orthogonal to the bolt axis, the stopper blade 4d receives the elasticity of the spring 5 and is rotated.
d is locked to the bottom surface of the recessed portion 3f, the bolt 4 does not come off, and the holder 3 can be reliably connected to the fixing member 1 by the action of the spring 5 without the possibility of coming off in an expandable state. . In this way, a plurality of holders 3 are installed at appropriate intervals, the cover body 6 is attached so as to cover these holders 3, and at appropriate intervals, from the intermediate portion of the surface plate 6a of the cover body 6. The attachment is completed by fixing the screw 7 to the middle convex portion 3h of the holder 3 and waterproofing it.

In the above description, the bolt 4 is mounted by fixing the edge of the fixing member between the adjacent projecting pieces 1b, 1b which hardly protrudes into the body gap, and by fully utilizing the body gap width. Since the tool can be inserted, the work can be performed easily. Engagement part 1d for waterproof sheet,
A waterproof sheet 8 may be provided and fixed to the 2b in advance.
The fastening position of the screw 7 may be set in advance.

According to the above expansion joint, when the skeletons A and B move in the vertical direction in the figure (inward and outward directions of the skeleton of the skeleton), since the holder 3 is supported at one point by the bolt 4, both ends of the holder 3 can freely move up and down. It is possible to change, and the spring 5 expands and contracts following it, and the change can be absorbed while the holder 3 is supported by the bolt 4.
Even when the skeletons A and B fluctuate in the left-right direction in the drawing (in the skeleton gap width direction), the holder 3 is supported by the bolt 4 at one point on the projecting piece 1b of the fixing member 1, and the fixing member 2 has the tip of the folded end 3e. However, the holder 3 moves together with the skeleton A, that is, the fixing member 1, but can freely slide relative to the skeleton B, that is, the fixing member 2.
Further, even if the folded-back end portion 3e moves over the fixed member 2 and moves relative to either side, the folded-back structure allows the folded-back end portion 3e to return to its original position without being caught, so that there is no obstacle to fluctuation absorption.

Further, even when the skeletons A and B fluctuate in the front-rear direction (longitudinal direction of the skeleton gap) in the drawing, the folded-back end portion 3e is just in contact with the fixing member 2 in the same manner as described above, and is freely slid relative to each other. Moreover, since the rotational movement of the holder 3 with respect to the body surface is supported at one point of the projecting piece 1b, it is not hindered and fluctuation fluctuation is not hindered. Since the cover body 6 is constantly pressed against the body surface by the spring 5, there is no gap between the end portion and the body surface, and even if a gap occurs, the action of the spring 5 causes the cover body 6 to move to the body surface. There is no danger of being agitated because the urging of is working.

In place of the protrusion 1b, the protrusion 1ba is used.
Is formed as a member separate from the fixing member 1. For this reason, as shown in FIG. 5, a dovetail-shaped engaging groove 1e is formed in the body gap side of the fixing member 1 along the longitudinal direction. 1e
The projecting piece having a dovetail-shaped base portion that can be fitted to is slidably fitted and fixed. By doing so, the flexibility of the construction work and the mounting position is further enhanced. It is possible to arbitrarily form the fireproof zone inside the waterproof sheet 8. In this case, it is preferable to attach a member for supporting the end of the fireproof zone to the lower side of the fixing members 1 and 2. . The sealing member 6c may be fixed by being inserted into the end of the side portion 6b as described above, or may be fixed by being fitted onto the end of the side portion 6b as shown in FIG. The configuration is arbitrary, and the shape of the seal portion is not limited to the shape shown in the figure, and can be any configuration as long as it can be deformed to close the gap.

FIG. 7 shows the structure of the expansion joint in the case where the body surfaces are located in a cross shape. In this case, the fixing member 11 is formed so as to be fixed by an anchor bolt or the like to the skeleton C which is arranged orthogonal to the outer surface of one skeleton and has a skeleton surface extending along the skeleton gap, and is fixed. In the member 11, the projecting piece 11b is made to project in a fragmentary and orthogonal manner from the vicinity of one end of the fixing surface 11a, a bolt insertion hole is formed in the projecting piece 11b, and the holder end is locked to the intermediate side of the fixing surface. Hook-shaped engaging projections 11c for
And an engaging portion 11d for locking the end of the waterproof sheet is formed at the end of the fixed surface on the outside of the protruding piece 11b.
Further, one end of the holder 31 is formed by bending one side of the recessed portion provided with the bolt insertion hole toward the inside of the holder to form a hook-shaped locking portion 31a, and the cover body 61 covers one end of the surface plate 61a. It is bent outward at a right angle, the side portion 61b is internally bent from the end portion, the seal member 61c is attached, and the other portions are configured according to the above-described embodiment.

According to the expansion joint, the fixing members 11 and 2 are fixed to the skeletons C and B, respectively,
The bolt 4 with the spring 5 attached thereto is passed through the bolt insertion hole of the projecting piece 11b and the bolt insertion hole of the recessed portion of the holder 31, and at the same time, the engaging portion 31a of the holder 31 is engaged with the engaging protrusion 11c of the fixing member 11. , The holder 31 is connected to the fixing member 11, and the cover body 61 is attached on the holder 31.
It is possible to press both end portions of both of them to both surfaces of the skeletons C and B.

FIG. 8 shows still another embodiment, in which the holder of FIG. 1 is modified so that both ends of the holder 32 are engaged with locking protrusions 62a provided inside both ends of the cover body 62. This is a possible configuration.

[0026]

According to the expansion joint of the present invention, the holder is passed between the two skeletons, and the holder is connected to the fixing member of one skeleton by the spring-loaded bolts.
The end part abuts without connecting to the other body, and is constantly pressed against the body side by the action of the spring, and since the cover body is fixed to this holder, it can be installed in both wide and narrow body gaps. Moreover, the fluctuation of the body can be absorbed by the elastic deformation of the spring body and the displacement of the bolt with respect to the bolt insertion hole, and since there is only one fulcrum of the holder, any fluctuation of the body can be achieved. You can follow freely,
The connection between the holder and the fixing member can be stably maintained.

If the projecting piece is locked to the fixing member in a dovetail shape and is slidable, the construction work can be made efficient and the projecting piece can be installed at an arbitrary position, so that the installation configuration is flexible. Can be given. If the end of the holder is a folded end, the possibility of catching the end of the holder can be eliminated, so the sliding structure between the end of the holder and the body can be maintained to more stably respond to fluctuations. Can be operated. If the bolt has a stopper blade, the construction work can be simplified and at the same time,
Further stability of the connection can be achieved without the risk of the bolt coming off.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mounted state of an expansion joint according to an embodiment of the present invention.

FIG. 2 is a plan view showing a part of the expansion joint of FIG. 1 by cutting.

FIG. 3 is a cross-sectional view showing a variation state of the expansion joint of FIG.

FIG. 4 is an enlarged partial perspective view showing the bolt of FIG. 1.

FIG. 5 is a partial perspective view showing another example of the configuration of the protruding piece.

FIG. 6 is a partial cross-sectional view showing a modified example of the seal member mounting portion.

FIG. 7 is a cross-sectional view showing a mounted state of an expansion joint according to another embodiment different from the above.

FIG. 8 is a cross-sectional view showing a mounted state of an expansion joint according to another embodiment different from the above embodiment.

[Explanation of symbols]

 1, 2 Fixing member 1a Fixing surface 1b Projection piece 1c Bolt insertion hole 1d Engagement part 3 Holder 3a Top plate part 3b, 3c Side piece part 3e Folding end part 3f Recessed part 3g Insertion hole 3h Convex part 4 Bolt 5 Spring 6 Cover body

Claims (6)

[Claims] 1. A fixing member fixed to an adjacent skeleton portion having a gap, a projecting piece for supporting a bolt is projected from a skeleton gap side portion of one fixing member, and the one fixing member and the other fixing member. A holder extending over the member is provided, and a bolt is attached to the intermediate portion of the holder and the protruding piece with a spring interposed between the holder and a cover body extending across a gap and extending to both the body portions. An expansion joint having a structure in which the cover body is fixed to a holder by covering the outside of the. 2. The holder and the cover body have different widths so that both ends of the holder do not reach the both sides of the cover body, and the middle portion of the cover body is fixed to the holder. The expansion joint according to Item 1. 3. The projection according to claim 1 or 2, wherein the projection is separate from the fixing member, and the base end of the projection is fitted in a fitting groove formed in advance at the projection forming portion of the fixing member. Expansion joint described. 4. A holder is formed by bending both ends thereof, and an end portion of the bent piece is formed so as to be capable of contacting an outer surface of a fixing member, and at least a holder end portion on the side of the other fixing member has a tip folded back. The expansion joint according to any one of claims 1 to 3, wherein the expansion joint is formed as a folded end portion. 5. The expansion joint according to claim 1, wherein one end portion of the holder is formed as a locking portion and is engaged with a locking portion formed in an intermediate portion of the one fixing member. 6. A bolt having a bolt head at one end and having a stop blade axially fixed to a shaft orthogonal to the bolt shaft at its tip end so as to be rotatable in the bolt axial direction and the orthogonal direction, 2. A structure in which a spring is attached to a bolt shaft, the tip side is inserted into a fixing member and a holder, and the stop blade is rotated orthogonally to be locked to the holder.
The expansion joint according to any one of to 5.