JPH03206235A - Expansion joint - Google Patents

Abstract

PURPOSE:To maintain a filled state of an expansion joint correspondingly to fluctuations of buildings by interposing a cushion member in a slide recessed portion located between a cover member and fixed members, which cushion member is formed mainly by a filling portion having a reinforcing member combined therewith. CONSTITUTION:An expansion joint 1 comprising a pair of fixed members 2, 3 and a cover member 4 slidably provided between the fixed members 2, 3 and covering the space between adjacent buildings is provided between both buildings. In the expansion joint 1 a cushion member 7 formed mainly by a filling portion 7a is interposed in a slide recessed portion 12 formed between the cover member 4 and the fixed members 2, 3. The filling portion 7a is formed by a supporting edge 7d..., a tread edge 7e and continued edges 7f..., 7g..., all of which are made from a soft synthetic resin or synthetic rubber etc. A reinforcing member 8... made from a hard synthetic resin, a synthetic resin or metal is combined with the supporting edge 7d... and/or the tread edge 7e....

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an expansion joint for shielding the floor-to-wall and floor-to-floor gaps of adjacent buildings.

(Prior art) Conventionally, expansion joints (hereinafter simply referred to as joints), which are installed to shield the floor-to-wall and floor-to-floor gaps of adjacent buildings, have been used to make the floor surfaces flush with each other. A bellows-shaped cushion member made of synthetic resin, synthetic rubber, or the like is attached to ensure flushness.

(Problem to be Solved) However, the cushion member in this conventional joint is configured to elastically expand and contract to follow the displacement of the joint's constituent members to cope with fluctuations in the structure, ensuring a flush state. However, sufficient consideration has not been given to deformation and abrasion caused by the treading force caused by foot traffic, resulting in significant deterioration over time, resulting in frequent replacements, and the deterioration of rubber parts due to temperature changes. There were problems such as expansion and contraction, creating convex embankments, and gaps at both ends.

The present invention has been made to solve the above-mentioned conventional problems, and provides an expansion joint that is equipped with a cushion member that can sufficiently cope with deformation and wear, and that can ensure the levelness of the floor surface. The purpose is to

(Means for Solving the Problems) In order to solve the above-mentioned technical problems, the present invention provides an arrangement between a pair of fixing members installed in a floor-to-wall or floor-to-floor configuration of adjacent buildings, and a gap between the fixing members. In an expansion joint consisting of a cover member that is slidably provided to cover the gap between the two structures, a slide recess formed between the cover member and the fixed member is filled with a material that fills the slide recess. A cushion member is interposed which mainly includes a filling part that is attached in a shape, and the filling part has a plurality of supporting edges made of soft synthetic resin or synthetic rubber, and a horizontal step edge is formed on the upper part of each supporting edge. The upper and lower parts of each support edge are integrally connected by a continuous edge so as to be expandable and retractable, and the support edge and/or the step edge are made of hard synthetic resin, synthetic rubber, or metal material. The expansion joint has a structure in which reinforcing members are combined.

(Function) As described above, the present invention combines a reinforcing member made of hard synthetic resin, synthetic rubber, or metal material on the supporting edge and/or the stepping edge, thereby creating a joint that can cope with the fluctuations of the building. It elastically expands and contracts in accordance with the displacement of the constituent members, and also functions to ensure a flush state by dealing with wear and buckling bias.

(First Embodiment) Next, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. This first embodiment is based on an adjacent building (l
This figure shows a joint 1 attached to the gap T1 between the floor F1 and the wall W1 of the itM body), and the joint 1 forms a pair arranged oppositely along the floor surface Fa and the wall surface Wa. It is composed of a fixing member 2.3, a cover member 4, a spring member 5, a waterstop plate 6, and a cushion member 7.

Reference numeral 2 denotes a floor fixing member disposed along the floor surface 1''a via an anchor member 9, and is made of, for example, a molded material extruded from a light alloy material such as aluminum, or a metal material such as stainless steel material. It is made of wood, and in its cross-sectional shape,
2a is a wear, which is provided horizontally, and the web 2a
There is a reinforcing frame 2 on the bottom side of the gap T1 side, which corresponds to approximately 1/2 of the area.
b, and a hollow portion 2C is integrally formed therein, and a locking leg 2d having a substantially hook-shaped cross section is formed at the left end of the web 2a in the drawing, corresponding to the reinforcing frame 2b. Furthermore, a projecting edge 2e is provided at the lower end of the left side edge piece of the reinforcing frame 2b in a manner opposed to the locking leg 2d. In addition, the gap T1 between the reinforcing frame 2b
At the lower end of the side, a fitting part 2f having a substantially U-shaped cross section into which the water stop plate 6 is fitted is formed along the longitudinal direction, and at the tip side of the upper surface of this fitting part 2f, a rising tip side is formed. A spring locking edge 2g having a locking surface 2h having a substantially sawtooth cross section is formed on one side, and a protrusion 2j that locks onto the anchor member 9 is formed on the left side of the fitting portion 2f in the drawing. It is formed.

Further, a cushion-fitting part 2k having a substantially groove-like cross section is formed in an upright position at the left end of the web 2a in the drawing. The fixing member 2 formed in this way is attached to the anchor members 9 disposed on the floor surface "a" at predetermined intervals, and the locking legs 2d and the projecting edges 2.
It is attached via e, 2j.

Reference numeral 3 denotes a wall fixing member that is installed opposite to the fixing member 2 along the wall surface Wa of the wall W1, and is made of a shaped material extruded from a light alloy material such as aluminum, or a metal material such as stainless steel material. In its cross-sectional shape,
Reference numeral 3a denotes a mounting wear, and an engagement edge 3b having a cross-sectional omitted shape is formed at the upper end thereof. Further, at the lower end of the mounting web 3a, there is a hollow portion 3 that overhangs toward the gap T1 side with a predetermined overhang width.
A support frame 3d with a substantially rectangular hollow cross section having a cross section of
A fitting portion 3f having a substantially U-shaped cross section is formed along the longitudinal direction to protrude oppositely from the water stop plate 6 and to fit the water stop plate 6 therein. A spring locking edge 3g having a locking surface 3h having a substantially sawtooth cross section and opposing the spring locking edge 2g is provided above. The fixing member 3 formed in this manner is attached with an anchor bolt 10 so that the upper surface of its support frame 3d is approximately at the same level as the web 2a of the fixing member 2. A cover member 4 is attached between the fixing members 2 and 3 thus attached.

This cover member 4 is made of a molded material extruded from a light alloy material such as aluminum or a metal material such as stainless steel, and is a horizontal tread portion 4 that is horizontally suspended between the fixed members 2 and 3.
a and the mounting web 3a of the fixing member 3 from one end of the tread plate part 4a, and a side force bar edge 4b disposed above in an opposed manner. At the same time, a plurality of anti-slip recesses 4C are formed in the upper surface side along the longitudinal direction. Further, convex edges 4d and 4e are provided on the left and right edges of the footboard portion 4a, and projecting edges 4d and 4e are provided downwardly, and a locking portion 4g in the shape of an arrowhead is provided at the lower end of the bottom surface at approximately the center of the lower surface. An edge 4f is provided vertically along the longitudinal direction. Further, a dovetail groove 4h into which the airtight member 11 is fitted is formed at the upper end of the side force bar edge 4b, and a locking edge which locks with the engagement edge 3b of the fixing member 3 is formed at the lower edge of the dovetail groove 4h as shown in the figure. 4j is in full form. The cover member 4 formed in this manner is secured between the fixing members 2 and 3 via the spring member 5.

Reference numeral 5 designates the above-mentioned spring member, which is disposed between the fixed members 2 and 3 at a predetermined interval in the longitudinal direction. The upper portions of the corresponding inner plate portions of the shaped spring plates 5a and 5b are fixed by fixing means 5j such as rivets, screws, and spot welding to form a substantially W shape, and a cover is provided on the upper side of the fixed portion 5j. A substantially U-shaped locking portion 5C having a locking claw 5d that locks onto a locking edge 4j formed on the member 4 is formed. In addition, the folded leg pieces 5e, 5 of the spring plates 5a, 5b
The upper end of the fixing members 2 and 3 has a spring locking edge 2g. A substantially inverted U-shaped locking portion 5g having a locking pawl 5h that elastically locks with 3Q is formed.

The water stop plate 6 is attached to the fitting portions 2f and 3f of the fixing members 2 and 3 in a loop shape in the illustrated gap T1, and is made of synthetic resin or synthetic rubber and has a predetermined width. The main body is a web 6a, and a mounting portion 6b that fits into the fitting portions 2f and 3f is formed on the periphery thereof.

The water stop plate 6 thus formed is attached in a loop between the fixing members 2 and 3, and the spring member 5 is attached to the locking portion 5C at a predetermined interval to the locking edge 4f formed on the back side of the cover member 4. When the spring member 5 is inserted between the fixing members 2 and 3 by locking the spring plates 5a and 5b, the spring plates 5a and 5b are attached to the spring locking edge 2Q.
．． As it is guided by 3Q and elastically deformed, the leg piece 5e
, 5f of the locking portion 5g is the spring locking edge 2Q. 3Q, and the locking edge 4j of the cover member 4 is locked with the locking edge 3b of the fixed member 3, and in this state, the footboard portion 4a of the cover member 4 is horizontally held between the fixed members 2 and 3. I! is suspended and retracted by the spring member 5. iIlfflT1 is shielded, and a slide recess 1 is provided between the left end (convex edge 4d) of the footboard portion 4a and the cushion fitting portion 2k of the fixed member 2.
2 is formed, and a cushion member 7 is interposed in the slide recess 12 in a filling manner.

This cushion member 7 is formed into a long member made of synthetic resin, synthetic rubber, etc., and is attached to the slide recess 12 in a filling manner, and its cross section is formed into a bellows shape and mainly includes a filler portion 7a that is expandable and contractible. A fitting part 7b that fits into the cushion fitting part 2k of the fixing member 2 is formed at one end of the filling part 7a, and a fitting part 7b which fits into the cushion fitting part 2k of the fixing member 2 is formed at the other end of the filling part 7a. An engagement edge 7C having a substantially L-shaped cross section is formed to be press-engaged. The cross-sectional shape of the main bellows-shaped filling portion 7a is such that a plurality of thick supporting edges 7d are provided at predetermined intervals in the vertical direction in the figure, and the upper end of each supporting edge 7d is horizontally arranged at the same level. An upper connecting edge 7f which is bent into a substantially V shape is provided between the stepping edges 7e so as to be elastically deformable and connected to each other, and the lower end of the supporting edge 7d A lower connecting edge 7g bent to have a generally W-shaped cross section is elastically deformably provided between the parts, and the filling part 7a is extendably provided to have a generally bellows-shaped cross section having a plurality of spaces. The entire cushion member 7 is made of soft synthetic resin or synthetic rubber, and in particular, the tread edge 7 formed at the upper end of each support edge 7d.
e has a substantially belt-shaped road surface reinforcing member 8 made of abrasion-resistant hard synthetic resin, synthetic rubber, light alloy material such as brass, aluminum, or stainless steel along the direction of the arm, integrally molded or welded by means. Alternatively, they are attached integrally by fitting molding, bending deformation molding, etc. The thus formed cushion member 7 is attached to the slide recess 12 in a filling manner via its fitting portion 7b and engagement edge 7C.

In addition, 13 in the figure is the mortar material placed on the floor surface Fa,
Reference numeral 14 denotes a floor material laid on the mortar material 13, which includes the tread portion 4a of the cover member 4 and the tread edge 7 of the cushion member 7.
The upper surfaces of e and the floor material 14 are provided on substantially the same plane.

In this first embodiment, the structure is as described above, and the cover member 4 is elastically engaged between the pair of fixing members 2 and 3 via the spring member 5. The cover member 4 is provided so that its footboard portion 4a can be slid along the webbing 2a of the fixed member 2 in response to fluctuations in the frame 1, W1, thereby providing a joint function and shielding the gap T1. In particular, the slide recess 12 formed between the cushion fitting part 2k of the fixing member 2 on the floor 1 side and the end of the footboard part 4a of the cover member 4 is interposed in a filling manner. The plurality of tread edges 7e constituting the filling portion 7a of the cushion member 7 are provided in a composite body with a tread reinforcing member 8 made of hard synthetic resin, synthetic rubber, light alloy material such as brass, aluminum, or stainless steel material. Therefore, the filling portion 7a of the cushion member 7 can elastically expand and contract to maintain the filled state of the slide recess 12 in accordance with the movement of the joint 1 in response to the fluctuations of the bat bodies Fl and W1, and the Since the hard tread reinforcing member 8 is combined with deformation and abrasion due to tread force caused by passing, the abrasion and deformation can be significantly reduced, and the maintenance of filling of the slide recess 12 can be significantly improved. , it is possible to ensure the levelness of the floor.

In addition, since the cushion member 7 is integrated with the hard tread reinforcing member 8 or is provided in an integrated composite body, the expansion and contraction of the soft part due to temperature changes is suppressed, resulting in convex bulges and edges. It is possible to significantly reduce the occurrence of gaps,
Good levelness of the floor can be maintained.

Next, the joint 21 shown in FIG.
The gap T2 between the pair of floors F2 is covered in a shielding manner, and a pair of fixing members 22, 23 and a cover member 26
and a cushion member 27. This pair of fixing members 22 and 23 are connected to the floor surfaces Fa of the floors Fl and F2.
The fixing member 22 on the left side of the figure is installed oppositely along the upper surface of Fb, and has a symmetrical cross-sectional shape.
I will explain about it.

This fixing member 22 is composed of two members, a mounting member 24 and a lid member 25. The mounting member 24 is made of a molded material extruded from a light alloy material such as aluminum.
In its cross-sectional shape, 24a is a mounting web,
Provided with a slight downward slope toward the gap 12 side. At its left end in the drawing, there is provided a top hanging piece 24bS which rises upward and has a generally hook-shaped cross section, and a part of the top hanging piece 24t) has an edge piece 24c which has a roughly double-shaped cross section and extends to the left in the drawing. A screw receiving groove 24d, which is open upward in the drawing, is formed along the longitudinal direction by the vertically hanging piece 24b and the edge piece 24G. Furthermore, a projecting edge 24e is provided at the end of the edge piece 24c. Further, a support W24f of a predetermined height is provided on the right end of the mounting web 24a as shown in the figure, and a groove portion 24f opening upward is formed by the upper hanging piece 24b of the mounting web 24a1 and the support wall 24f.
4Q is formed. In addition, drain holes 24h are provided at predetermined intervals along the longitudinal direction of the support wall 24f at the lower end thereof.
Furthermore, elongated holes 24k for receiving screws are formed through the mounting web 24a at predetermined intervals along the longitudinal direction outside the mounting portion 24j of the illustrated water stop plate 6.

25 is a lid member of the fixing member 22, which is made of, for example, a light alloy material such as aluminum or a stainless steel plate;
The main body is a substantially flat wear 25a, and a plurality of anti-slip grooves 25b are provided on the upper surface of the wear 25a.
A projecting edge 25c is formed at the right end in the figure, slightly shifted inwardly from the support W24f of the mounting member 24, and facing the support W24f.

Reference numeral 26 denotes a cover member, which is made of, for example, a molded material extruded from a light alloy material such as aluminum, or a stainless steel plate. The width dimension of this web 26a is the floor F1,
It is formed in a width dimension that can cover the gap T2 between F2 and cope with the relative movement of the building, and has projecting edges 26 at both ends.
b are formed respectively. Further, approximately in the center of the wear 26a, there is a substantially dovetail groove-shaped cushion fitting portion 26c into which the cushion members 27 are fitted in a back-to-back manner as shown in the figure. 26c
is formed. In addition, both cushion fitting portions 26
A cover body 26d, which is formed by bending a wear-resistant plate such as stainless steel plate, is attached to the upper surface of the cover body 26c.

Attachment member 2 of the fixing member 22, 23 formed in this way
4. , 24 are provided with support walls 24f, 24f arranged continuously along the sides of the gap T2 for the upper surfaces Fl, F2 of the anchor bolts 1 and 24 as shown in the figure.
It is fixed by 0. When the mounting member 24 is disposed, the mounting portion 6b sides at both ends of the water stop plate 6 are placed on the lower surface side and fixed together as shown in the figure. Furthermore, the mounting members 24 are arranged in a continuous manner so that their end surfaces are aligned with each other through the elongated holes 24k.

The left and right mounting members 24.2 are arranged correspondingly in this way.
Between 4 and 4 is a supporting wall 24f. A cover member 26 is continuously placed so as to straddle the space between 24f and 24f as shown in the figure and to shield the gap T2, and lid members 25 are attached to the left and right mounting members 24, respectively. It is supported between the left and right fixing members 22 and 23 in a supported manner, and is provided so as to be slidable in the left and right direction while shielding the gap T2,
A slide recess 12'12'' is formed between the cushion fitting parts 26G, 26G protruding from the center of the cover member 26 and the lid member 25.
Cushion members 27 are interposed in a filling manner, respectively.

This cushion member 27 is a long member made of synthetic resin or synthetic rubber, as in the first embodiment, and has a bellows-like cross-sectional shape and mainly includes an expandable and contractible filling part 27a. A fitting part 27b is formed to fit into the cushion fitting part 26c of the cover member 26, and
The other end of the filling portion 27a is formed with an engaging edge 27c that engages with a protrusion 25c formed on the lid member of the fixing member 22.23. Further, the cross-sectional shape of the filling portion 27a is formed in the same manner as in the first embodiment, and in particular, the lower surface side of each support edge 27d is designed to follow the substantially chevron-shaped inclined surface of the cover member 26.
The length is gradually increased, and the step edge 27e on the upper surface side is formed into a band shape having a thickness difference in the width direction so as to be substantially flush with the upper surface of the lid member 25. Similar to the first embodiment, a hard tread reinforcing member 28 is integrally formed on 27e. Note that the upper and lower continuous W edges are formed into a substantially V-shape. therefore,
This second embodiment also provides the same effects as the first embodiment.

Next, FIG. 4 shows a third embodiment of the present invention, and the joint 31 of this third embodiment connects the floor F1 and floor F2 of adjacent buildings as in the second embodiment. , and a fixing member 32 that shields the gap T3 and is installed oppositely along the floors F a and F b of the left and right floors Fl and F2.
．． 33, a cover member 34, a spring member 35, and a cushion member 37.

The left and right fixing members 32 and 33 have symmetrical cross-sectional shapes, so to explain the fixing member 32 on the left side in the figure, in the cross section, the guide web 32a and the attachment web 32b are connected to the three support edges 32C in the figure. The hollow portions 32d and 32e are integrally formed in parallel with each other, and a fitting groove 32f for the water stop plate 6 is provided along the longitudinal direction on the side of the gap T3 of the mounting web 32b. Moreover, an engaging fiber 32Q that hangs downward and engages with the spring member 35 is formed at the end of the guide web 32a on the side of the gap T3. Also, the inside of the guide web 32a (left side in the figure)
A groove-shaped cushion fitting part 32h with a substantially raised cross section is formed at the end, and a substantially hook-shaped upper edge 32j of the cushion fitting part 32h is made of a wear-resistant and acid-resistant material such as a stainless steel plate. A reinforcing member 32k is attached to the top. An anchor bolt 1 is provided in the longitudinal direction of the guide web 32a in the hollow portion 32d of the fixing member 32 formed in this way.
Insertion holes 32N are inserted through the anchor bolts 10 at predetermined intervals and are attached along the floor surface Fa via the anchor bolts 10. Further, the fixing member 33 is also provided in a similar manner. In addition, the fixed member 33 has the same reference numeral as the fixed member 32 in addition to the number 33. In this way, the cover member 34 is attached in a horizontal frame manner via the spring member 35 between the fixing members 32 and 33 arranged oppositely on the floors F1 and F2.

This cover member 34 is made of a wear-resistant material such as stainless steel or a light alloy material such as aluminum.
The web 34a is mainly composed of a thick web 34a having a predetermined width and having an anti-slip recess 34b on the upper surface, and leg edges 34c having an abbreviated cross section are formed at both ends of the web 34a. Further, the spring member 35 is elastically attached to the back surface of the cover member 34 at a predetermined interval, and is composed of two members: a base plate portion 35A and a spring portion 35B. This board portion 35A is a leg edge 34c of the cover member 34.
A convex portion 35b is provided at both ends of the base web 35a upward in the drawing, and the convex portion 35b
The leg edge 34G of the cover member 34 continues at a predetermined angle of inclination.
A locking piece 35C is formed to elastically engage the base web 35a, and a mounting projection 35d for the spring portion 35B is formed approximately in the center of the base web 35a with a predetermined width and substantially flush with the projection 35b. Further, the spring portion 35B is engaged with the engagement edges 320, 330 of the fixing member 32.33, and is provided at both ends of a horizontal attachment wafer 135e that can be fitted into the attachment convex portion 35d of the base web 35A in an overlapping manner. A support piece 35f and a folded piece 35a are formed in the shape of a square (not shown), and a retaining piece 35h is formed at the tip of the folded piece 35o. The spring portion 35B formed in this manner has its mounting wafer 135e attached to the substrate portion 35A.
The spring member 35 is fitted into the mounting convex portion 35d of the spring member 35 in an overlapping manner and is integrally connected to the spring member 35 by a fixing means such as spot welding or rivets.
is formed. The spring member 35 thus formed is attached to the substrate portion 35 at a predetermined interval on the back side of the cover member 34.
A is elastically engaged between the left and right leg edges 34c, and when the spring member 35 is inserted between the fixing members 32 and 33, the spring portion 35B engages the engaging edge 32g. 33c+ and is elastically deformed, the engaging piece 35h of the folded piece 35a is elastically engaged with the engaging edges 32Q and 330, and the cover member 34 is attached in a retractable manner to cover the gap T3, and the cover member 34 A slide recess 1 is provided between the left and right leg edges 34c of 34 and the cushion fitting parts 32h and 33h of the fixing member 32.33.
2'12' is formed, and a cushion member 37 is interposed in the concave portion 12' in a concentrated manner.

This cushion member 37 is formed into an elongated member made of synthetic resin or synthetic rubber, etc., in substantially the same way as the cushion member 7 of the first embodiment, and its cross-sectional shape is bellows-shaped, with an expandable filling portion 37a. is the main body, and one end thereof has a cushion fitting portion 32h. of the fixing member 32.33. 33
A fitting part 37b is formed to fit into the filling part 3.
At the other end of the fixing member 32,33 there is a guide web 32a.7a. Along the upper surface of 33a and engaging edges 32g, 33
A cover edge 37c that engages with Q is formed, and a projecting edge 37d that engages with the leg edge 34G of the cover member 34 is formed on a part of the stiffness bar edge 37G.

Further, the filling portion 37a is formed in substantially the same manner as in the first embodiment, and the tread edge 37f formed at the upper end of each support edge 37e is formed into a composite body including a hard tread reinforcing member 38 integrally. Therefore, this third embodiment also provides substantially the same effects as the first embodiment.

Next, FIG. 5 shows a fourth embodiment of the present invention, in which this joint 41 connects the floor F1 and floor F2 of adjacent buildings as in the 2.3 embodiment, and This is to shield the gap T4, and the floor surface F of the left and right floors Fl and F2
The fixing member 42, 43, the cover member 44, the spring member 45, and the cushion member 4 are arranged oppositely along a and Fb.
It consists of 7.

Since the fixing members 42 and 43 are formed similarly to the fixing member 2 of the first embodiment, the numbers 42 and 43 are given the same reference numerals and the explanation thereof will be omitted. In addition, both fixing members 42.4
As shown in the figure, a reinforcing member 42 [43fJ made of, for example, a stainless steel plate or the like having wear resistance and acid resistance is attached to the cushion fitting portions 42k and 43k of No. 3. Also,
The cover member 44 is made of a wear-resistant material such as stainless steel, and is mainly composed of a web 448 having a predetermined width, a thick wall, and a plurality of anti-slip recesses 44b on the upper surface. A convex edge 44c is formed, and a horizontal mounting piece 44e is formed approximately at the center of the back side of the web 44a.
A long or short spring locking portion 44d consisting of a locking piece 44f hanging from one end of the mounting piece 44e and having an arrowhead-shaped locking portion 44g at the tip is fixed in the longitudinal direction by fixing means such as welding or rivets. installed along the The cover member 44 formed in this way is attached to the fixed part via the spring member 45. It is installed between materials 42 and 43.

Note that this spring member 45 is formed substantially in the same manner as the spring member 5 of the first embodiment, so the same reference numerals are given to the number 45, and the explanation thereof will be omitted. Both ends of the cover member 44 and the cushion fitting portions 42k of the fixing members 42 and 43 are thus attached via the spring member 45. A slide recess 12- is formed between the slide recess 12- and the slide recess 12-.
- is filled with a cushion member 47 similar to the cushion member 7 of the first embodiment. Therefore, the fourth embodiment also provides substantially the same effects as the first embodiment.

Next, FIGS. 6 to 9 show other embodiments of the cushion member, and the cushion member 57 shown in FIG. 6 is made of hard synthetic resin, synthetic rubber, light alloy material such as brass, aluminum, or As shown in the figure, a supporting edge reinforcing member 8a made of a homogeneous material is integrally provided with the tread reinforcing member 8 made of stainless steel in a vertical direction along the longitudinal direction of the substantially central part of the supporting edge 57d, thereby preventing the supporting edge 57d from buckling due to treading force. The structure is such that it prevents bending. Further, the cushion member 67 shown in FIG. 7 has a structure in which a supporting edge reinforcing member 8a made of hard synthetic resin, synthetic rubber, stainless steel, etc. is provided only at the supporting edge 67 to prevent the supporting edge 67 from buckling. It is something. Further, the cushion member 7 shown in FIG.
7 is integrally or integrally provided with a support edge reinforcing member 8a made of hard synthetic resin, synthetic rubber, stainless steel, etc., extending from the center of the support edge 77d to the center of the step edge 77e, and each step edge 77e is made of stainless steel material. A cover reinforcing member 8b made of brass, hard synthetic resin, etc. is attached to the cover to prevent wear and buckling. Further, in the cushion member 87 shown in FIG. 9, each step edge 87e is entirely formed of hard synthetic resin, synthetic rubber, etc.
A cover reinforcing member 8b made of stainless steel, brass, hard synthetic resin, etc. is mounted on top.

In addition, each of the above cushion members 7.27.37.47.5
7, 67, 77, 87 hard reinforcing members 8, 28, 38
．． The composite configuration of 48.8a and 8b is shown in the figure. The present invention is not limited to this, and any cushion member with a composite structure that can be appropriately combined depending on the usage state of the cushion member may be used.

(Effects of the Invention) With the present invention configured as described above, the filling portion of the cushion member elastically expands and contracts to fill the slide recess in response to the movement of the joint constituent members in response to fluctuations in the building. In addition to being able to maintain the condition, the deformation and abrasion due to the tread force caused by people passing by is made of a composite structure with hard reinforcing members, so the abrasion and deformation can be significantly reduced and the slide recess can be maintained filled. can be significantly increased.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention;
The figure is a vertical cross-sectional view of an expansion joint attached to the floor and the opposite wall, FIG. 2 is a vertical cross-sectional view of the cushion member, and FIG. The longitudinal cross-sectional view of the joint, FIG. 4, is the third embodiment of the present invention.
FIG. 5 is a vertical sectional view of an expansion joint attached to a floor-to-floor structure showing a fourth embodiment of the present invention, and FIG. 6 to FIG. FIG. 9 is a sectional view showing another embodiment of the cushion member.

Claims (1)

[Claims] (1) A pair of fixing members installed floor-to-wall or floor-to-floor in an adjacent building, and a cover that is slidably provided between the fixing members and covers the gap between the two buildings. In the expansion joint, the slide recess formed between the cover member and the fixing member is interposed with a cushion member mainly consisting of a filling part that is attached to the slide recess in a filling manner. The filling part is made of a plurality of supporting edges made of soft synthetic resin or synthetic rubber, and a step edge is formed horizontally on the upper part of each supporting edge, and the upper and lower parts of each supporting edge are integrally connected by a continuous edge. An expansion joint that is formed to be expandable and contractible, and further has a structure in which a reinforcing member made of hard synthetic resin, synthetic rubber, or metal is composited on the support edge and/or the step edge.