JPH094069A - Expansion joint - Google Patents

Abstract

PURPOSE: To close a clearance between adjacent skeleton and respond to fluctuation of both skeleton 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 slanting projection piece 1c having an insertion hole 1d which is gradually slanted and a fixture member 1, which projects a locking area 1b, are fixed to a skeleton A while the fixture member 2 is anchored with an adjacent skeleton B where a holder 3 is spanned between both fixture members. A part of a top area 31 of the holder 3 is arranged to form a slanted connection surface which is opposed to the slanting projection piece 1c and forms side pieces 3d and 3e on both side by bending. A locked area 3f at the tip of the side piece 3d is engaged with the locked area 1b while a spring 5 is interposed between the slanting projection 1c and the slanting connection surface 3b, thereby fixing a bolt 4 so as to connect the holder 3 to the fixture member 1. The outside of the holder 3 is covered with a cover 6 and a cover intermediate area is locked 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 body ends, and the back side of the cover member is fitted to the W-shaped intermediate portion of the spring member. There is known an expansion joint in which the cover member is press-fitted and the spring member is pressed against the body side by utilizing the spring pressure, and the spring member absorbs the variation between the body members. 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 in particular, the variation in the inside / outside (depth) direction of the body gap and the longitudinal direction of the body gap.

[0005]

In order to achieve the above-mentioned object, the expansion joint of the present invention has a structure in which one of the fixing members fixed to an adjacent structure having a gap has a structure on the side of the structure gap. An inclined projecting piece for bolt support is projectingly provided in an inner part of the gap, and the inclined projecting piece is gradually inclined toward the inner side of the body gap, and a locking portion is formed at an outer part of the inclined projecting piece. Has an engaging portion that engages with the locking portion of the fixing member at one end, and has the other end that abuts the fixing surface of another fixing member, and has an inclination that is opposed to the inclined protrusion at the intermediate portion. A holder having a connecting surface is provided, and the inclined projecting piece and the inclined connecting surface of the holder are connected via a spring, and a cover body extending across the body gap and extending over both body portions is provided outside the holder. It has a structure in which it is covered and the cover is fixed to the holder. The and the it is characterized in.

The holder and the cover body may 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 may be fixed to the holder. . Further, 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 is a fitting groove formed in advance at the projecting piece forming portion of the fixing member. It is also possible to have a fitting structure that is slidable and does not come off in the protruding direction.

The engaging portion of the holder end portion and the engaging portion of the fixing member are engaged with each other so that they cannot be removed in the extending direction of the holder end portion and can be rotated at an appropriate angle in the body gap width direction. Preferably. Both ends of the holder may be bent, and at least the holder end on the side of the other fixing member may be a folded end having a tip formed in a folded shape. 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 protrusion, and a waterproof sheet is provided at an end portion of the other fixing member on the body gap side. A seat fastening portion that fastens the other end of the sheet can be provided.

In order to connect the holder and the projecting piece, the spring is a coil-shaped compression spring, and the wire diameter of the spring is a screw groove so that a screw of an appropriate size can be screwed at both ends thereof. By interposing a spring between the inclined projection piece and the inclined connection surface, and by screwing a screw from both outsides of the projection piece and the connection surface to both ends of the spring. It can be carried out. In addition, a bolt having a bolt head at one end and a stopper blade that is rotatable at the tip end on the axis orthogonal to the bolt axis and is rotatable in the bolt axial direction and the orthogonal direction is used as an inclined projecting piece or an inclined connecting surface. Install a compression spring on the bolt shaft in the state of passing through one of the above, and then insert it into another tilted connecting surface or tilted projection piece, and then rotate the stopper blade in an orthogonal direction to the tilted connecting surface or projection piece. It is also possible to connect by locking.

[0009]

The holder, which extends between the two bodies, is connected via a spring to only one fixing member fixed to the one body side, and one end is in engagement with the one fixing member. In addition, since the spring is attached in an inclined state and the cover body is attached to this holder, both ends of the holder and the cover body are in pressure contact with both the body, and the cover body and the body surface are No gap is created between them. In addition, even if the skeleton shifts either in the width direction of the skeleton or inside / outside (depth) direction of the skeleton, the ends of the holders that are not connected can slide to the other skeleton side in pressure contact with each other, so there is sufficient variation in the skeleton. Can be absorbed into the body gap, and even if it shifts in the longitudinal direction of the body gap, the other of the holders is not connected, allowing free movement, and the cover body is not restricted by the holder, so the cover body can be held without fear of being deformed. .

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.

[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 locking portion 1 that is bent from the above to form a surface along the inside of the body gap and slightly protrudes inward of the body gap near the corner bending portion.
b is formed, protrudes inwardly of the body gap from the body gap, and at the same time forms a slanting protrusion 1c that is gradually inclined toward the inner side of the body gap toward the tip. 1d, a bolt insertion hole 1d is formed in the inclined projection piece 1c, and an engaging portion 1e for fixing the end of the waterproof sheet is formed on the inner side thereof. Inclined protrusion 1
c are formed at appropriate intervals so that the holder 3 can be easily installed along the body gap, but it is optional to connect the holders 3 to all of the projecting pieces 1c or to connect them at an appropriate number. The other fixing member 2 is made of the same material and has a body B.
Surface 2a that is fixed to the outer surface of the edge of the frame with anchor bolts
And an engaging portion 2b for locking the end of the waterproof sheet, which is opened in the body gap direction from one edge of the fixed surface 2a.

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. Then, the inclined connecting surface 3 such that a portion near one end of the top plate portion 3a having an appropriate short length in the longitudinal direction of the body gap can face the inclined projection piece 1c.
B is bent and formed, a bolt insertion hole 3c facing the bolt insertion hole 1d is formed in the inclined connecting surface, and both ends are bent to form side piece portions 3d and 3e, and one side piece portion is formed. 3d
The tip of the bulge-shaped engaging portion 3 is engageable with the engaging portion 1b.
f, and the other side piece 3e is an outwardly flared inclined piece,
The tip is folded back and comes into contact with the fixed surface 2a to form a sliding end portion 3g that is easily slidable, and some convex portions 3h are provided in the intermediate portion and the other side portion of the top plate portion 3a to cover each convex portion 3h. Body 6
Is formed so that the back surface of the sheet abuts.

As shown in FIG. 4, the bolt 4 includes a relatively thick bolt (screw) 4a formed by cutting a male screw capable of being inserted and locked into the bolt insertion hole 1d of the inclined projection 1c from the inner side of the body gap.
A male screw bolt (screw) that can be inserted and locked from the outside into the bolt insertion hole 3c of the inclined connecting surface 3b and is thinner than the bolt 4a.
It consists of 4b. The spring 5 is a coil-shaped compression spring having a sufficient length capable of absorbing the displacement between the skeletons A and B. The spring 5 has an appropriate thickness so that the spring action can be stably exerted, and one end portion The vicinity is formed with a slightly reduced diameter. Also, the coil body of the spring 5 and the bolts 4a, 4
The spring is formed by matching the wire diameter of the spring with the winding state of the coil with respect to the thread and pitch of the bolt so that the screw thread of b can be screwed. The bolt 4 and the spring 5 are arranged such that the spring 5 is arranged between the inclined projecting piece 1c and the inclined connecting surface 3b, and the bolt 4a is inserted from the back side of the inclined projecting piece 1c to be screwed to the base end of the spring 5. The bolts 4b can be connected through the spring 5 by inserting the bolt 4b from the outside of the inclined connecting surface 3b and screwing the bolt 4b into one end of the spring 5.

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 outer side 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, at a proper portion of the inclined projecting piece 1b formed from the one fixing member 1 and protruding into the body gap, while the holder 3 is straddled between the two fixing members 1 and 2, one bulge-shaped engaging portion 3f is formed. The locking portion 1b of the fixing member 1
And the other folded-back end 3g is engaged with the other fixing member 2
The slanting projection 1c and the slanting connecting surface 3b are brought into contact with each other at the same time.
A spring 5 is interposed between the bolts 4a and 4b to screw them together to connect them. Further, the cover body 6 is covered from above the holder 3, and the seal members 6c, 6c at both ends are fixed members 1, 2.
The attachment is completed by bringing the screw 7 into contact with the outside body surface of the cover body, fixing the screw 7 from the outer surface of the cover body 6 to the convex portion 3h in the middle of the holder 3, and waterproofing.

In the above description, the bolt 4 and the spring 5 are mounted so that the edge of the fixing member between the adjacent projecting inclined projecting pieces 1b, 1b hardly protrudes into the body gap, and the body gap width is used almost completely. Since a hand or a jig can be inserted by hand, the work can be performed easily. The waterproof sheet 8 may be previously arranged and fastened to the waterproof sheet engaging portions 1e and 2b. 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), the holder 3 has the bolts 4 and the springs 5
Since the holder 3 can be freely tilted to the left and right, the spring 5 expands and contracts accordingly, and the holder 3 can absorb the fluctuation while being supported by the bolt 4 and the spring 5. Even when the skeletons A and B fluctuate in the left-right direction in the figure (the crevice width direction of the skeleton), the holder 3 is connected by the bolts 4 and the springs 5 and is supported by the inclined projection piece 1c at one point, and is folded back to the fixing member 2. Since the tip of the end 3g is only in contact with the holder 3, the holder 3 moves together with the skeleton A, ie, the fixing member 1, but can freely slide relative to the skeleton B, ie, the fixing member 2. Further, even if the folded-back end portion 3g goes over the fixed member 2 and relatively moves to either side, the folded-back structure allows the folded-back end portion 3g to return to the 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 figure, the folded-back end portion 3g is just in contact with the fixing member 2 in the same manner as described above, and is freely slid relative to each other. Therefore, the fluctuation absorption can be prevented. The cover body 6 is constantly pressed against the body surface by the spring 5 together with the holder 3, and moreover, when the spring 5 is in an inclined state, the side portion 6b of the cover body 6 is always pulled in the body gap direction and pressed against the body surface. Therefore, no gap is created between the end of the cover body and the body surface, and even if a gap is created, the spring 5 acts to urge the body surface while attracting. Therefore, there is no fear of being agitated.

As shown in FIG. 5, the inclined projection piece 1c is provided.
In place of the above, the inclined projection piece 1ca is formed as a member separate from the fixing member 1, and an engaging groove 1f having a dovetail shape is formed in the body gap side portion of the fixing member 1 along the longitudinal direction. 1f
It is possible to slidably fit and fix the slanted projection piece having a dovetail-shaped base portion that can be fitted to. By doing so, the flexibility of the construction work and the mounting position is further enhanced.

The bolt 4 and the spring 5 may have a structure different from that described above. For example, as shown in FIG.
Has a bolt shaft 41a of an appropriate length set as a length sufficient to absorb the deviation between the two bodies A and B, and when a coiled compression spring is inserted into the bolt shaft and mounted, The bolt head 41b is formed so that the portion can lock one end of the spring, and the tip portion is a bifurcated portion 41c, and a shaft stopper portion is provided in a crossed shape across the bifurcated portion, and the shaft stopper portion has a rod shape. The slender plate-shaped stop blade 41d is rotatably fixed to the shaft, and when the stop blade 41d is coaxial with the bolt, the stop blade 41d protrudes with an appropriate length.
It is formed in a letter or cross shape so that both ends protrude so that the other end of the spring can be locked, and for easier operation, the part near one end is axially locked and the tip of the other end protruding long Holes 41e are formed near the holes. The hole 41e can be used for hooking a thin rod jig here and rotating the stopper blade. The above bolts are preferably simple rods without external threads, but they may be external threads. The bolt 41 may have a configuration in which a male screw is formed at least near the tip and a nut or a cap nut is screwed to the tip.

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.
The bolt head 4a and the projecting piece 1 in a state in which the slanting projecting piece 1c and the slanted connecting surface 3b of the holder 3 are inserted and fixed.
It is interposed between b and b by being appropriately compressed, and is set so that it can be further compressed and expanded with sufficient elasticity from the mounted state. The coil spring is most preferable as the spring 5, but other configurations may be used. 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 seal member 6c may be fixed by being inserted into the end of the side portion 6b as described above, or by being fitted into the end of the side portion 61b as shown in FIG. Also, the configuration is arbitrary, and the shape of the seal portion is not limited to the illustrated shape,
Any structure can be adopted as long as it can be deformed to close the gap.

FIG. 7 shows the construction of the expansion joint when the body planes 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, a locking portion 11b is provided in a protruding manner at an intermediate portion of the fixed surface 11a, and the inclined projection piece 11c is caused to project in a piecewise manner from the vicinity of the end portion on the inner side of the body gap, and the bolt insertion hole 11d is formed in the inclined projection piece 11c. Is formed, and an engaging portion 11e for locking the end portion of the waterproof sheet is formed at the rear end of this inclined projection piece. The holder 3 is the same as that in the above-mentioned embodiment. In the cover body 61, one end of the surface plate 61a is bent outward at a right angle, the side part 61b is internally bent from the end, and the seal member 61c is attached. The other parts are the same as in the above embodiment. It is structured.

According to the expansion joint, the fixing members 11 and 2 are fixed to the skeletons C and B, respectively.
The spring 5 is connected by bolts 4a and 4b between the inclined projecting piece 11c and the inclined connecting surface 3b, the holder 3 is connected to the fixing member 11, and the cover body 61 is adhered on the fixing member 11. Both ends can be pressed against both surfaces of the frames C and B.

[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 and the bolt.
The other end does not connect to the other end, but the end abuts, and the free end side is constantly pressed by the action of the spring so as to pull the holder and the cover body in the body gap direction. Since it is attached, it can be installed with a wide or narrow skeleton, and fluctuations of the skeleton can be absorbed by elastic deformation of the spring body and displacement of the bolt with respect to the bolt insertion hole, and with only one fulcrum of the holder Therefore, it is possible to freely follow any fluctuation of the skeleton, and 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,
The 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 a schematic front view of the bolt and the spring shown in FIG.

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

FIG. 6 is a partially omitted perspective view showing another example of the structure of the bolt.

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

[Explanation of symbols]

 1, 2 Fixing member 1a Fixing surface 1b Locking part 1c Inclined projecting piece 1d Bolt insertion hole 1e Engaging part 2a Fixing surface 2b Engaging part 3 Holder 3a Top plate part 3b Inclined connecting surface 3c Bolt insertion hole 3d, 3e Side piece Part 3f Bulging engagement part 3g Folded end 3h Convex part 4 Bolt 4a, 4b Bolt 5 Spring 6 Cover body 6a Surface plate 6b Side part 6c Seal member 6d Bulging tongue piece

Claims (7)

[Claims] 1. An inclined projecting piece for supporting a bolt is projectingly provided at an inner portion of the body gap on a body gap side portion of one of the fixing members, which is fixed to an adjacent body portion having a gap, and the inclination is provided. The projecting piece is gradually inclined toward the inner side of the body gap toward the tip, and a locking portion is formed at a portion outside the tilted projecting piece, and an engaging portion that engages with the locking portion of one fixing member is provided at one end. A holder having the other end portion that is in contact with the fixing surface of another fixing member and that has an inclined connecting surface facing the inclined protrusion piece in the middle is disposed, and the inclined protrusion piece and the holder are inclined. An expansion joint having a structure in which a connecting body is connected via a spring, a cover body extending over both body portions across a body gap is covered on the outside of the holder, and the cover body is fixed to the holder. 2. The engagement between the engaging portion of the holder end portion and the locking portion of the fixing member does not come off in the extending direction of the holder end portion, and is rotatable at an appropriate angle in the body gap width direction. The expansion joint according to claim 1. 3. 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. Or the expansion joint described in 2. 4. A projection member as a member different from a fixing member, and a base end portion of the projection member is fitted into a fitting groove formed in advance at a projection member forming portion of the fixing member. The expansion joint described in either one. 5. The holder according to claim 1, wherein both ends of the holder are bent, and at least the holder end on the side of the other fixing member is a folded end having a folded end. Expansion joint. 6. The spring is a coil-shaped compression spring, and is formed such that the wire diameter of the spring matches the thread groove of the screw so that a screw of an appropriate size can be screwed into both ends thereof. A spring is interposed between the inclined projection piece and the inclined connection surface, and the projection piece and the connection surface are connected by screwing both ends of the spring from both outsides of the connection piece. 1 to
The expansion joint according to any one of 5 above. 7. A bolt having a bolt head at one end and 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, an inclined projection or A compression spring is attached to the bolt shaft while passing through one of the inclined connecting surfaces, and then inserted into another inclined connecting surface or an inclined projection piece, and then the stop blade is rotated in an orthogonal direction so that the inclined connecting surface or The expansion joint according to any one of claims 1 to 5, wherein the expansion joint is connected by being locked to the projecting piece.