JPH094070A - Expansion joint - Google Patents

Abstract

PURPOSE: To mount an expansion joint on adjacent skeletons and respond to fluctuations 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 fixture member 1 having a cross section-C-shaped engagement groove 1b is fixed to a skeleton A. A support member 5, which turns the tip erected from a joint surface 5a into an expanded head-like engagement projection 5c, is connected to the fixture member 1 by engaging the engagement groove 1b with the engagement projection 5c while a base plate 1a is placed into contact with the joint surface 5a, thereby laying out the holder 3. A reversed W-like spring 6 having a flat intermediate surface is laid out on the top of the base plate 1a where a bolt 8 is inserted into the spring 6, a long hole of the base plate 3a and the joint surface 5a so that the fixture member 1 may be installed on the adjacent skeletons. The bolt 8 is fixed with the adjacent skeletons by way of the spring 6 on the holder 3 and the long hole of the base plate 3a, thereby connecting the holder 3 and fitting a cover 4 into 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, as shown in FIG. 7, a fixing member 51 in which a projecting piece 52 for supporting the holder plate surface is erected on the outer surface of the adjacent skeletons A and B by an anchor bolt or the like. Fixing each, fixing members 51, 5 of both bodies
1. A holder 53 having a long hole on the plate surface in the width direction of the body gap and having both ends of the plate surface bent downward is straddled on the upper surface of the holder 1, and the middle part is a flat surface with an intermediate step above the plate surface of the holder. Deformed reverse W
-Shaped spring 54 is arranged, and a bolt 56 extending from the spring 54 to the skeleton through an elongated hole 55 in the holder plate surface is fixed, and the holder 53 is fixed to the skeleton fixing member 5 through the spring 54.
1, a long cover body 57 is fitted in the holder 53 in the longitudinal direction of the body gap, and an elastic support body 58 is interposed between the body surface and the cover body 57 at an appropriate interval. An expansion joint having such a configuration is disclosed.

[0003]

However, in the expansion joint as described above, the fluctuation of the skeleton in the inward / outward direction of the skeleton (upward and downward direction in FIG. 7) can be slightly absorbed by the deformation of the spring 54 having the inverted W shape. But spring 5
The elastic deformation of No. 4 can be absorbed only within the allowable range, and the fluctuation of the skeleton in the skeleton gap width direction (left and right direction in FIG. 7) can absorb the shift of the long hole 55 formed in the holder 53. The fluctuation of the body in the longitudinal direction of the body gap (front-back direction in FIG. 7) cannot be absorbed. As shown in FIG. 8, as the skeletons A and B relatively change in the longitudinal direction of the skeleton gap, the holder 53 connected to the skeletons A and B by the bolts 56 is slanted, but the holder 53 is covered. Since it has a width sufficient to fit the body, the corners will protrude outward as it is skewed from the position orthogonal to the body, and as a result, the length of the holder in the body gap width direction will become longer. become. Therefore, a deforming pressure is applied from the inside to the fitting portion of the cover body 57 fitted in the holder 53, which may damage the cover body or the holder portion. In addition, if excessive pressure is applied from the inside and fluctuations such as inward / outward direction of the body gap are applied, or if wind pressure or other external pressure is applied, the fitting is easily disengaged and the cover body falls off. There was also a fear of such.

As described above, the present invention solves the problem that the conventional expansion joint cannot always sufficiently absorb the fluctuation in the other direction, and further simplifies the construction and secures the fixation. In addition, the stability of the fixed state is pursued, there is no risk of separation due to wind pressure, etc. Furthermore, variations between the skeletons can be sufficiently absorbed in both narrow and wide skeletons, especially variations in the longitudinal direction of the skeleton are also sufficiently absorbed. It is intended to provide such expansion joints.

[0005]

In order to achieve the above object, in the expansion joint of the present invention, a holder is straddled over an adjacent skeleton having a gap, and the holder is connected to both skeletons with a spring interposed. Then, in the expansion joint having a configuration in which the cover body is fitted to this holder, in at least one of the body, a fixing member fixed to the body surface, and a support member connected to the holder via a spring, It is characterized in that it has a structure in which it is slidable in the longitudinal direction of the body gap and rotatably connected in the body gap width direction.

The fixing member is such that an engaging groove having a C-shaped cross section is formed on the surface of the fixing surface in the longitudinal direction of the body gap, and the supporting member stands up from the joining surface which abuts on the bottom surface of the holder.
An engagement projection is formed with a tip end portion that is an expanded head that engages with the engagement groove, and the length of the engagement groove of the fixing member in the longitudinal direction of the body gap or the length of the engagement projection in the same direction is determined. It is preferable that one of them is formed longer than the other. Also,
The above-mentioned fixing member is erected from the surface of the fixing surface, and is formed with an engaging protrusion having a bulging head having a circular cross-section at its tip.
The support member has a cross-section C on the joint surface that abuts the bottom surface of the holder.
The engaging groove capable of engaging the above-mentioned expansion head is formed, and one of the length of the engaging protrusion of the fixing member in the longitudinal direction of the body gap and the length of the engaging groove in the same direction is set to be greater than the other. Can also be formed long.

Further, in the above connecting structure, the joint surface of the supporting member is brought into contact with the bottom surface of the holder, the bolts are inserted into both surfaces, the spring is interposed in the bolt portion projecting to the front surface side of the holder, the nut and the like. It is possible to adopt a structure in which the fixing means is used to fix the structure. Further, in the above-mentioned structure, a lip-shaped groove capable of engaging a bolt head or a nut portion is formed in the joint surface of the support member in the longitudinal direction of the body gap, and the nut portion or the bolt head of the bolt connecting the support member and the holder to the groove. The parts can be engaged. In any of the above configurations, it is preferable that a long hole for inserting a bolt that is long in the body gap width direction is formed on the holder surface through which the bolt connecting the support members is inserted.

[0008]

The fluctuation of the skeleton inward and outward (backward) of the skeleton gap is rotated and absorbed by the rotatable structure of the fixed member and the support member. Further, the fixing member and the supporting member relatively slide and absorb the variation in the longitudinal direction of the body gap. Further, the movement of the body in the body gap width direction can be absorbed by the sliding structure of the connecting portion between the support member and the holder. Therefore, the cover body is not forced.

[0009]

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, as shown in FIGS. 1 to 3 and FIG.
Fixing members 1 and 2 respectively fixed to the outer surfaces of the adjacent skeletons A and B, a holder 3 of an appropriate width that straddles the skeleton of the skeleton supported by the fixing members 1 and 2 via a coupling mechanism, and fitted to the outside of the holder 3. A long cover body 4 for covering the body portion is provided.

The fixing member 1 is made of aluminum, stainless steel or other appropriate metal material, can be joined to the outer surface of the skeleton A, and has an appropriate width in the skeleton gap width direction and an appropriately long length in the skeleton gap longitudinal direction. Forming a fixed surface 1a having
Engagement groove 1 having a C-shaped cross-section that opens outward on this fixed surface 1a
It is assumed that b is formed in an appropriate long shape in the longitudinal direction of the body gap and is fixed to the body A by anchor bolts or the like. The other fixing member 2 is made of the same material, and can be fixed to the outer surface of the skeleton B with a fixing surface 2a fixed with anchor bolts or the like, and can stand up to a certain height from the fixing surface 2a and contact the bottom surface of the holder 3. The projection member 2b is formed as a piece member having an appropriate width. The fixing member 2 may have the same structure as the fixing member 1 described above, or may have any other suitable structure capable of supporting one side portion of the holder 3.

Reference numeral 5 denotes a support member, which is a support piece 5 standing upright from a joint surface 5a capable of contacting the bottom surface of the holder 3.
b is formed, and an engaging projection 5c is formed with a tip end portion thereof having a bulging head having a circular cross section capable of engaging with the engaging groove,
It is a piece member having a width equal to or less than the width of the holder 3 in the longitudinal direction of the body gap. In a state in which the support piece 5b, which is engaged and connected to the fixed member 1 and the support member 5, is erected substantially vertically, the joint surface 5a of the support member and the projecting piece 2b of the fixed member 2 form substantially the holder 3. It is preferable to set each dimension so that they can be supported at the same height.

The holder 3 is made of the same metal material as described above, and has a length sufficient to fit the cover member 4 across both the skeletons A and B and an appropriate width in the longitudinal direction of the skeleton gap. The side plates 3b having an appropriate height are erected on both sides of the width of the bottom plate 3a, and both ends of the length of the bottom plate are bent downward to form locking pieces 3c, 3c with slightly expanded tips. In the surface of 3a, long holes 3d, 3d for connecting bolts for connection are formed long in the body gap width direction. The structure of the holder 3 may be integrally formed as a whole, and although not shown, a structure in which two divided bodies divided in the middle are connected with a connecting piece so as to be slidable long and short, or other It can be configured appropriately.

The cover body 4 is made of the same metal material as described above, and has a width in the body gap width direction necessary for covering both the bodies A and B and an appropriate length long in the body gap longitudinal direction. And the top plate 4a and the side plates 4b folded down from both sides of the top plate,
At the lower end of the side plate, an inward projection 4c that can be engaged with the tip of the locking piece 3c of the holder 3 is formed. The cover may be in the form of a cover covering the top of the parapet as shown in FIG. 1. Also, although not shown, side plates formed by bending on both sides are fitted with seal members and pressed against the adjacent body surface. It may be in the form of covering the body gap, and is optional.

Reference numeral 6 denotes a spring, which is formed by appropriately bending both sides of a flat intermediate surface to stand up, and then bending and bending downward to form an expanded leg piece, and the tip end portion is folded back and bent. In addition, a deformed inverted W-shaped spring is formed with a bolt insertion hole in the flat intermediate surface. The spring 6 is installed in an inverted W shape so that the tip of the leg piece comes into contact with the upper surface of the bottom plate 3a of the holder 3 and the flat intermediate surface floats from the bottom plate. When the bolt is tightened from the insertion hole through the bottom plate of the holder, the bending portion and the leg piece are elastically deformed and the bending can be absorbed. However, as long as the spring 6 can be elastically deformed, a coil spring, a leaf spring, or the like having an appropriate structure other than the above structure can be adopted.

In the expansion joint composed of the above-mentioned members, the fixing member 1 is brought into contact with the skeleton A and fixed at appropriate positions with the anchor bolts 7 and the like, and the engaging projection 5c is slidably engaged with the engaging groove 1b to fix the fixing member. 1, the support member 5 is connected, the bottom plate 3a and the joint surface 5a are joined, the holder 3 is arranged on the support member 5, the spring 6 is arranged on the upper surface of the bottom plate 3a, and the bolts 8 are arranged on the spring 6 and the bottom plate. 3a and joint surface 5
The spring 6, the holder 3, and the support member 5 are connected by bolts and nuts. On the other hand, the fixing member 2 is attached to the body B.
The fixing member 2 with the anchor bolts and the like.
The holder bottom plate 3a is brought into contact with the projecting piece 2b, the spring 6 is arranged on the upper surface of the bottom plate 3a, and the bolt 9 is fixed to the skeleton B by inserting the spring 6 and the long hole 3d for bolt insertion of the bottom plate 3a. In this way, the holder 3 can be connected across the skeletons A and B, and then the cover body 4 can be fitted onto the holder 3 for construction. In addition, the said construction order can be performed in arbitrary orders.

It should be noted that the waterproof sheet 1 stretched in the body gap.
In order to fix 0, the fixing members 1 and 2 each having a locking groove for locking the end of the sealing member is used, or the fixing member door is a separate sealing member supporting member. It can be fixed as shown in FIG. 1 and locked to this. Reference numeral 11 is a support member that can be elastically deformed as appropriate, and is fixed to the outside of the fixing members 1 and 2 of the skeletons A and B, respectively, and the tip ends of the supporting members abut on both sides of the cover body 4. If the support member 11 is elongated, it also helps prevent rain from entering.

According to the expansion joint, the holder 3 is connected by the bolts 8 and 9 via the spring 6 which is freely deformable, and the holder A is engaged with the fixing member 1 and the supporting member 5 which are rotatable and slidable on the body A. Since it is connected to the skeleton B through the spring 6 and the bolt 9 and is in contact with the tip of the projecting piece 2b, the fluctuating external pressure is appropriately absorbed by the deformation of the spring 6. At the same time, the variation in the longitudinal direction of the body gap is absorbed by the sliding of the fixing member 1 and the support member 5, and the variation in the inner and outer directions of the body gap is as shown in FIGS. 6A and 6B. 5 rotates to freely change the angle with respect to the fixing member 1, and the spring 6 deforms and absorbs the fixing member 2 in a variable manner. Hole 3d and bolts 8 and 9 It is absorbed by sliding. Particularly, when the skeletons A and B relatively move in the longitudinal direction of the skeleton gap (that is, the longitudinal direction of the cover body 4), the holder 3 which is regulated by the fitting of the cover body has a direction orthogonal to the longitudinal direction of the cover body 4. Therefore, the fluctuation of the body is absorbed by the relative sliding of the fixed member 1 and the support member 5.

FIG. 4B shows a modification of the support member. The support member 51 has the joint surface 51a, the support piece 51b, and the engaging projection 51c formed in the same manner as described above.
A lip-shaped engaging groove 51d which slidably engages a nut portion or a bolt head portion screwed to a bolt tip portion is formed in a. According to this, as shown in FIG. 5, the bolt 8 is temporarily fixed to the holder 3 through the spring 6 in advance,
This can be slidably engaged with the support member 5 and finally tightened for connection, which makes the work easier.

In any of the above embodiments, the fixing member 1 fixed to the body surface is set to be long in the longitudinal direction of the body gap, and the supporting members 5 to 51 are connected to the bottom surface of the holder 3, so that a short piece member is formed. Although it is preferable to set it, it is possible to set the fixing member to be short and the supporting members 5 to 51 to be long, on the contrary. Although not shown, it is also possible to form the supporting pieces 5b to 51b of the supporting member in a rod shape and the engaging protrusions 5c to 51c at the tip end to a spherical shape.

[0020]

According to the expansion joint of the present invention, the holder is passed between the two skeletons, and the holder is connected by the bolt with the spring. At least one of the skeletons has the fixing member fixed to the skeleton and the spring through the holder. Since it is slidably and rotatably connected to the support member connected with the holder and the holder is connected through the long hole,
It can be installed with a wide or narrow body gap, can freely follow any fluctuations of the body, and can stably maintain the connection state of the holder and the fitted state of the cover body. In particular, since the support member is slidable and rotatable with respect to the fixed member, it is possible to absorb a larger skeleton variation and to stabilize the fitted state of the cover body.

[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 an enlarged cross-sectional view of a main part of the expansion joint of FIG.

FIG. 3 is a partially cutaway perspective view of a holder connecting structure portion of FIG. 1;

4A and 4B show a fixing member and a supporting member, FIG. 4A is a perspective view of what is shown in FIG. 1, and FIG. 4B is a perspective view showing a modification thereof.

5 is a cross-sectional view of a main part of the expansion joint connected by the supporting member of FIG. 4 (B).

6A and 6B are views showing a deformed state of a main part of the expansion joint of FIG. 1 due to a change in a skeleton, where FIG. 6A is a partial sectional view before deformation and FIG. 6B is a partial sectional view in a deformed state.

FIG. 7 is a cross-sectional view showing a conventional expansion joint.

FIG. 8 is a schematic plan view showing a deformed state of the holder when the body changes in the example of FIG.

[Explanation of symbols]

 1, 2 Fixing member 1a Fixing surface 1b Engaging groove 3 Holder 3a Bottom plate 3d Bolt insertion long hole 4 Cover body 5 Supporting member 5a Joining surface 5b Supporting piece 5c Engaging protrusion 6 Spring 7, 8, 9 Bolt

Claims (6)

[Claims] 1. A holder is straddled over an adjacent skeleton body having a gap, and the holder is connected to both skeleton portions with a spring interposed therebetween.
An expansion joint having a structure in which a cover body is fitted to the holder, and in at least one of the bodies, a fixing member fixed to a body surface and a supporting member connected to the holder with a spring interposed are provided in a body gap. An expansion joint characterized in that the expansion joint is connected so as to be slidable in a longitudinal direction and rotatable in a body gap width direction. 2. The fixing member is such that an engaging groove having a C-shaped cross section is formed on the surface of the fixing surface in the longitudinal direction of the body gap, and the supporting member stands up from a joint surface which abuts on the bottom surface of the holder, and a tip portion. Is formed as an expanded head that engages with the engaging groove, and one of the length of the engaging groove of the fixing member in the longitudinal direction of the frame gap and the length of the engaging projection in the same direction are formed. The expansion joint according to claim 1, wherein the expansion joint is formed longer than the other. 3. The fixing member stands up from the surface of the fixing surface,
It is assumed that an engaging projection having a bulging head having a circular cross section at the tip is formed, and the supporting member has an engaging groove capable of engaging the bulging head having a C-shaped cross section with a joint surface that abuts the bottom surface of the holder. The expansion joint according to claim 1, wherein any one of the length of the engaging projection of the fixing member in the longitudinal direction of the body gap and the length of the engaging groove in the same direction is formed longer than the other. . 4. A joint surface of a support member is brought into contact with a bottom surface of a holder so that bolts are inserted into both surfaces thereof, a spring is interposed in the bolt portion projecting to the front surface side of the holder, and nuts or other appropriate locking means. The expansion joint according to any one of claims 1 to 3, which is fixed by. 5. A nut portion or a bolt head of a bolt for forming a lip-shaped groove in the joint surface of the support member, the lip-shaped groove being engageable with the bolt head or the nut portion in the longitudinal direction of the body gap, and connecting the support member and the holder to the groove. The expansion joint according to claim 4, wherein the parts are engaged with each other. 6. The expansion joint according to claim 1, wherein a long hole for inserting the bolt, which is long in the body gap width direction, is formed on the holder surface through which the bolt connecting the support members is inserted.