JP2003301531A - Expansion joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion joint, enabling quick and smooth absorption of movement of a skeleton and installation in a gap between skeletons regardless of the status of the skeleton. <P>SOLUTION: In this expansion joint 1, the rear end part of a cover material 4 is connected to one skeleton 2B through a slide member 5, the slide member 5 is slidably fitted to a moving rail member 6 in the longitudinal direction of the gap between the skeletons, the moving rail member 6 is connected to a rail receiving member 7 connected to the skeleton 2B through a fixing member 25 to be moved in the direction of depth of the gap between the skeletons by a connecting shaft 8 and a stopper 10. This joint can be smoothly moved to the movement in any direction, and it is excellent in view of strength so that it can be installed regardless of the skeleton status. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint for covering a body gap.

[0002]

2. Description of the Related Art As an expansion joint for covering a body gap, one disclosed in JP-A-2000-328674 is known. The expansion joint 50 disclosed in this publication is shown in FIG.
As shown in (b), the support recess 5 formed on the floor surface on the side of the gap 52 of one of the left and right skeletons 51A and 51B.
3, a connecting member 55 at the rear end of the cover material 54 is vertically movably attached, and the front end of the cover material 54 is placed in a recess 56 formed in the floor surface of the other frame 51B on the side of the gap 52. If the gap 52 between the left and right frames 51A and 51B becomes narrow due to an earthquake or the like, as shown in FIG.
4 is pushed up and can absorb the shaking.

[0003]

Since the cover member 54 is attached to the skeleton body 51A so as to be movable up and down, the cover member 54 moves up and down in response to the movement of the gap 52 in the width direction. However, the front end portion of the cover member 54 does not move with respect to the movement of the gap 52 in the longitudinal direction.
This is dealt with by sliding on the floor surface of No. 1, and in this case, there is a design problem in the engagement between the front end portion and the wall surfaces on both sides of the frame 51B. Further, it is known that a long hole is formed in the receiving member in order to support the cover member 54 so as to be slidable in the horizontal direction, but there are problems of difficulty in processing for obtaining a sufficient length and a decrease in strength. there were.

According to the present invention, the horizontal movement and the vertical movement of the skeleton can be absorbed by different structures without causing the above-mentioned problems, so that the processing is simple and the restoration with high strength is possible. (EN) An expansion joint that is excellent in performance, can absorb a skeleton change quickly and smoothly, and can be installed without being influenced by the skeleton condition.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a front end portion of a cover material for covering a body gap is movably mounted on one body side, and a rear end portion is placed on the other body side via a slide member. The slide member is connected to the moving rail member so as to be slidable in the longitudinal direction of the body gap, and the moving rail member is movable in the depth direction of the body gap with respect to the rail receiving member connected to the other body side. An expansion joint having such a connected structure was used. By doing so, the slide structure between the slide member and the moving rail member can absorb the longitudinal movement of the body gap of the adjacent skeleton, and the connecting structure of the moving rail member and the rail receiving member can move the skeleton gap of the adjacent skeleton in the depth direction. Since it can be absorbed, each structure works separately, and it becomes possible to absorb the skeleton fluctuation quickly and smoothly. In addition, the slide member, the moving rail member, and the rail receiving member can be easily created after the mold is created once, which simplifies the processing, and in the past, long holes have been processed in the receiving material. As a result, the strength can be reduced, while the strength can be improved.

It is preferable that the slide member has a bulging portion having an engaging shoulder portion formed at the tip of a neck portion projecting from the rear end portion of the cover member, and the movable rail member has the bulging portion. It is preferable that the concave groove portion is formed so as to be slidably engaged. With this configuration, the expansion head of the slide member can slide in the recessed groove portion of the moving rail member, and since the slide member and the moving rail member are engaged with each other, the sliding member moves in the body gap depth direction. In addition, the movable rail member can also move together with it, and it is possible to cope with vertical movement.

The engaging portion between the slide member and the movable rail member may be provided with a clearance portion in the depth direction of the body gap, and both members may be engaged with each other so as to be appropriately rotatable with respect to each other with the sliding direction as a rotation axis. If the movable rail member and the movable rail member are rotatably engaged with each other, the above-mentioned rotation operation immediately responds to fluctuations in which the gap is slightly narrowed or the tip of the cover material is slightly lifted, and the rear end is lifted. It is not necessary, and the cover material can be stably supported.

Further, if a connecting shaft having a proper length is provided from above the moving rail member so as to penetrate through the moving rail member and the rail receiving member, and the connecting shaft is movable up and down with respect to the rail receiving member, the connecting shaft is movable. With this, it can be connected to the skeleton so that it can move up and down, and can move smoothly in the depth direction of the skeleton.

In addition to the above, a stopper is fixed near the tip of the connecting shaft projecting downward from the rail receiving member, and the stopper is moved up and down along a guide arranged parallel to the axis of the connecting shaft. It may be configured so as to obtain. As a result, the stopper provided near the tip of the connecting shaft moves between the guide and the wall surface of the body, so that the connecting shaft can move without tilting, thus preventing the rear end of the cover material from tilting. You can In addition, the stopper can prevent the rear end portion of the cover material from rising too much, and can also prevent the cover material from falling off the body.

All of the above members can be installed in the body gap of the other body, and even if there are wall surfaces on both sides of the front end, the slide member can slide freely, so that the wall surfaces are not destroyed. It can be installed regardless of the physical condition.

The "skeleton gap width direction" is a direction in which adjacent skeletons approach and separate from each other, and the "skeleton gap longitudinal direction" is a direction in which adjacent skeletons slide horizontally with respect to each other. The “gap depth direction” is a direction orthogonal to the width direction and the longitudinal direction.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the expansion joint according to the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of the expansion joint of one embodiment of the present invention in the width direction of the body gap, FIG. 2 is an exploded perspective view of the slide member, the moving rail member and the rail receiving member of FIG. 1, and FIG. 1 is an enlarged cross-sectional view of the vicinity of the rail receiving portion connecting hole of FIG. 1, FIG. 4 is an enlarged cross-sectional view of the vicinity of the rail receiving portion fixing hole of FIG. 1, and FIG. 5 is an operating state when the gap of FIG. 1 is narrowed. 6 is an enlarged sectional view showing a state in which the slide member of FIG. 1 is rotated, and FIG. 7 is an enlarged sectional view of another embodiment of the slide member and the moving rail member. Is.

As shown in FIG. 1, the expansion joint 1 is disposed between the upper surfaces 2Aa and 2Ba of the skeletons 2A and 2B and covers the gap 3 between the skeletons 2A and 2B. A slide member 5, a moving rail member 6, a rail receiving member 7, a connecting shaft 8, a guide 9 and a stopper 10 that movably connect the end portion and the one body 2B.
Is provided as a main configuration.

The cover material 4 may be an arbitrary plate body, but in the figure, a filler material 12 such as concrete or mortar is poured into the inside of a cover material body 11 having a substantially rectangular box-like shape having a concave interior to form a surface. A surface material 13 such as a tile or a stone material is attached to form an upper surface 4a. At the center of the back surface 4b, an elongated support member 14 formed in a substantially triangular cross section and extending in the longitudinal direction of the body gap is provided.

As shown in FIG. 2 and FIG. 3, the slide member 5 has a bulging portion 16 having a substantially half-moon-shaped cross section formed at the tip of a neck portion 15 projecting downward from the fixing surface 5a of the flat plate, and both front and rear sides thereof. Has a shape having locking shoulder portions 17a and 17b.
The slide member 5 is fixed to the back surface 18a of the frame member 18 fixed to the rear end portion of the cover member 4 with the fixing surface 5a, and is fixed from the frame member 18 side with bolts or the like. The length of the slide member 5 is not particularly limited,
The slide members 5 having the same length can be intermittently mounted in a line.

The movable rail member 6 is provided with a recessed groove portion 19 having a substantially half-moon shaped cross section for recessing the upper surface 6a having a substantially inverted trapezoidal cross section and allowing the slide member 5 to be slidably fitted therein.
On the upper side of 9, the fitting pieces 20a, 2 protruding inward are provided.
0b is provided. The fitting pieces 20a, 20b are formed such that one fitting piece 20a is positioned above the other fitting piece 20b (on the slide member 5 side) in a staggered manner.
When the expansion head 16 is fitted, the clearance 20 is provided between the fitting piece 20a and the locking shoulder 17a. A concave portion for accommodating a bolt head is formed in the lower inside of the concave groove portion 19, and a moving rail portion connecting hole 21 through which the connecting shaft 8 can be inserted is bored in the bottom surface thereof, and at least two places with respect to the cover material 4 are formed. Is provided to prevent the cover material 4 from rotating. The length of the moving rail member 6 is not particularly limited, but may be set to be substantially the same as that of the slide member 5 so that the moving rail member 6 can be fitted to the slide member 5 with a shift of a half pitch.

The rail receiving member 7 has a substantially rectangular cross section, and has an upper surface 7a in which a receiving portion 22 having a substantially inverted trapezoidal recess for receiving the moving rail member 6 is formed. 22a is inclined inwardly and downwardly, and a plurality of protrusions are juxtaposed in the longitudinal direction on the inclined surface. Further, a recess for accommodating the bolt head is formed in the lower inside of the receiving portion 22, and a rail receiving portion fixing hole 23 for fixing the rail receiving member 7 and a rail receiving portion through which the connecting shaft 8 can be inserted on the bottom surface thereof. A connecting hole 24 is formed. Rail receiving member 7
As shown in Fig. 4, when attaching the
Attach the mounting surface 25a of the character-shaped fixing member 25 to the wall surface 2 of the frame 2B.
It is attached to Bb, and the fixed surface 25b is the wall surface 2Bb of the frame 2B.
The rail receiving member 7 is placed on the fixed surface 25b so as to protrude from the gap 3 side, and the rail receiving portion fixing hole 23 and the fixed surface 25 are provided.
The rail receiving member 7 is fastened and fixed by inserting a bolt into the fixing portion fixing hole 26 formed in b. At this time, the rear end portion of the cover material 4 is installed so as to be located closer to the gap 3 side than the wall surface 2Bb of the skeleton 2B. Although the length of the rail receiving member 7 is not particularly limited, it can be formed shorter than the moving rail member 6 and can be intermittently arranged in a line.

The above-mentioned slide member 5 and movable rail member 6
The rail receiving member 7 may be provided by bending stainless steel, but in order to form it with high accuracy and less burrs, and to have excellent strength, it is formed by extrusion of aluminum and slides. Member 5 is a moving rail member 6
It is preferable that the inside of the recessed groove portion 19 is easily slid and the moving rail member 6 is also easily fitted in the receiving portion 22 of the rail receiving member 7.

The connecting shaft 8 uses a long bolt 8a and a connecting cylinder 28. The long bolt 8a is connected to the moving rail portion of the moving rail member 6 so as to project from the upper side of the moving rail member 6 to the lower side of the rear surface. The hole 21, the rail receiving portion connecting hole 24 of the rail receiving member 7, and the fixed portion connecting hole 27 of the fixing member 25 are inserted. Then, the cylindrical connecting cylinder 28 is sheathed on the long bolt 8a from below the long bolt 8a, the upper end of the connecting cylinder 28 is abutted against the outer bottom surface of the moving rail member 6, and the nut 8b is tightened to fix the connecting cylinder 28. , And below that, stopper 1
0 is inserted and the stopper 10 is fixed by the nut 8c. The moving rail portion connecting hole 21, the rail receiving portion connecting hole 24, and the fixed portion connecting hole 27 are formed in such a size that the connecting tube 28 can be inserted therethrough.

The guide 9 is a plate material having a substantially L-shaped cross section. The upper surface 9a is fixed to the back surface of the fixing surface 25b of the fixing member 25, and the guide surface 9b is installed so as to be parallel to the wall surface 2Bb of the frame 2B. The lower end is bent toward the wall surface 2Bb of the frame 2B to form the stopper support portion 29.

The stopper 10 is a plate member having a substantially U-shaped cross section that opens downward, and has a mounting hole for inserting the connecting shaft 8 formed in the upper surface 10a. The width of the stopper 10 is the guide surface 9b of the guide 9 and the mounting surface 25a of the fixing member 25.
It is made slightly narrower than the gap between them so that this gap can be moved. The stopper 10 normally has a lower end surface 10
The b is fixed at a position where it abuts the stopper support portion 29 of the guide 9.

The operation of the expansion joint 1 will be described below. As shown in FIG. 1, normally, the cover material 4 covers the gap 3 and the moving rail member 6 is held in the receiving portion 22 of the rail receiving member 7.

When the gap 3 is changed such that the gap 3 becomes narrower in the width direction of the frame, as shown in FIG. 5, the cover member 4 is fixed to the frame by the supporting member 14 fixed at the substantially center of the back surface of the cover member 4. It is lifted to the upper surface 2Aa of 2A. And
The slide member 5 and the moving rail member 6 provided at the rear end portion of the cover member 4 also move upward, and the stopper 10 located below the connecting shaft 8 projecting downward from the rear surface of the moving rail member 6 also moves upward. Move to. At this time, the stopper 10 moves between the guide surface 9b of the guide 9 and the mounting surface 25a of the fixed member 25, and the width of the stopper 10 is slightly narrower than this gap. Even if is tilted due to vibration or the like while moving upward, the stopper 10 is sandwiched in this gap to prevent the moving rail member 6 from tilting. Therefore, the cover member 4 can be smoothly moved upward and the rear end portion of the cover member 4 can be stably supported.

When the stopper 10 moves further upward, it abuts against the back surface of the fixing member 25 to prevent the rear end of the cover member 4 from moving upward, and the connecting shaft 8 causes the rail receiving member 7 and the fixing member 25 to move. It is also prevented from coming off and falling off. The stopper 10 can obtain the same effect even if it has a flat plate shape, but in order to stably support the rear end portion of the cover material 4, as shown in the figure, it is preferable to bend it in a substantially U-shaped cross section. Good.

When the skeletons 2A and 2B fluctuate in the longitudinal direction of the skeleton gap, the slide member 5 and the movable rail member 6 are slidably fitted, and the rear end of the cover member 4 is installed in the gap 3. Therefore, the cover material 4 has a frame 2A, 2B.
Both skeletons can freely move in the longitudinal direction of the skeleton without hitting any of the wall surfaces of the skeleton, reducing the load applied to the connecting part, and aligning the width direction of the skeleton in any horizontal direction. The expansion joint 1 is capable of smoothly moving with respect to the fluctuation of and absorbing the fluctuation. In addition, in the above embodiment, the bulging portion 16 is formed on the slide member 5, and the moving rail member 6 is formed.
Although the recessed groove portion 19 is provided in the above, on the contrary, the recessed groove portion 19 may be formed in the slide member 5 and the expansion head 16 may be formed in the moving rail member 6, and the same effect can be obtained. Similarly, other parts can be changed.

When the moving rail member 6 moves upward and then returns to its original position, the inner wall surface 22a of the receiving portion 22 of the rail receiving member 7 is inclined because it is inclined inward. When the rail member 6 returns from above, the inner wall surface 22a guides the rail member 6 toward the center and returns to a fixed position, so that the moving rail member 6 can be reliably held.

The sliding member 5 is formed by forming the fitting piece 20a of the moving rail member 6 and the other fitting piece 20b in a staggered manner.
By providing the clearance portion 20 in the engaging portion of the movable rail member 6 and the slide member 5, the slide member 5 can be rotated to the position A as shown in FIG. 6, and the rear end portion is grounded,
It is also possible for the tip of the cover member 4 to move slightly upward. In the past, when the cover material 4 moved upward as much as possible, the rear end portion of the cover material 4 also moved upward, which sometimes made the cover material 4 unstable. When the front end of 4 moves upward, the slide member 5 has only to rotate, and the fluctuation can be absorbed with the rear end being in contact with the ground, and even a slight fluctuation stabilizes the rear end and covers the cover. The material 4 can be supported.
The rotation structure of the slide member 5 and the moving rail member 6 is shown in FIG.
As shown in FIG. 2, the fitting pieces 20a and 20b are set to the same height, and the shoulder portion 17a on the tip end side of the slide member 5 is formed to be lower than the other shoulder portion 17b (rail receiving member 7 side). Then, the same effect can be obtained even if the clearance 20 is provided.

The installation place of the present invention may be used not only on the floor surface but also on the wall surface as described above, and may also be used on the ceiling if supported by springs so as not to fall downward. It is possible.

[0030]

The expansion joint of the present invention is excellent in strength by being connected to the wall surface of the body through the slide member, the moving rail member and the rail receiving member, and moves smoothly in any horizontal movement. By providing a clearance for the engaging portion between the slide member and the moving rail member, it becomes possible to rotate, and the rear end of the cover material can be stably supported even if the front end of the cover material is slightly lifted. By providing the connecting shaft, the guide and the stopper, it is possible to prevent the cover material from inclining when the rear end portion is lifted and prevent the cover material from falling off.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an expansion joint according to an exemplary embodiment of the present invention in a body gap width direction.

FIG. 2 is an exploded perspective view of a slide member, a moving rail member, and a rail receiving member of FIG.

FIG. 3 is an enlarged cross-sectional view of the vicinity of a rail receiving portion connecting hole of FIG.

FIG. 4 is an enlarged cross-sectional view of the vicinity of a rail receiving portion fixing hole of FIG.

FIG. 5 is a cross-sectional view in the body gap width direction showing an operating state when the gap in FIG. 1 is narrowed.

FIG. 6 is an enlarged cross-sectional view showing a state where the slide member of FIG. 1 is rotated.

FIG. 7 is an enlarged cross-sectional view of another embodiment of the slide member and the moving rail member.

FIG. 8A is a schematic cross-sectional view of a conventional example,
(B) is a schematic plan view of a conventional example.

FIG. 9 is a schematic cross-sectional view showing an operating state when the gap is narrowed in the conventional example.

[Explanation of symbols]

1 Expansion joint 2A, 2B body 2Aa, 2Ba Top surface 2Bb wall 3 gap 4 Cover material 4a upper surface 4b back side 5 Slide member 5a Fixed surface 6 Moving rail members 6a upper surface 7 Rail receiving member 7a upper surface 8 connecting shafts 8a long bolt 8b nut 8c nut 9 Guide 9a upper surface 9b Guide surface 10 stopper 10a upper surface 10b lower end surface 11 Cover material body 12 Filling material 13 Surface material 14 Support members 15 neck 16 bulging head 17a, 17b Locking shoulder 18 frame material 18a back side 19 Recessed groove 20 Clear space 20a, 20b Mating piece 21 Moving rail connection hole 22 Receiver 22a inner wall surface 23 Rail receiving part fixing hole 24 Rail receiving part connection hole 25 Fixed member 25a mounting surface 25b fixed surface 26 Fixing part fixing hole 27 Fixed part connection hole 28 Connection tube 29 Stopper support 50 expansion joint 51A, 51B body 52 Gap 53 Support recess 54 cover material 55 Connection member 56 recess

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E001 DH31 FA18 FA71 GA55 GA56                       HA10 HA14 HB03 HB04 LA01                       LA07 LA18 PA04 PA05

Claims (5)

[Claims] 1. A front end portion of a cover material for covering a body gap is movably mounted on one body side, and a rear end portion is connected to the other body side via a slide member, and the slide member is movable. The rail member is slidably fitted in the longitudinal direction of the body gap, and the movable rail member is connected to the rail receiving member connected to the other body side so as to be movable in the body gap depth direction. Expansion joint. 2. A swelling portion having an engaging shoulder portion is formed at a tip of a neck portion projecting from a rear end portion of the cover material to form a slide member, and a recessed groove portion for slidably engaging the swelling portion. The expansion joint according to claim 1, wherein the expansion joint is formed as a moving rail member. 3. The sliding member and the moving rail member are provided with a clearance portion in the body gap depth direction at an engaging portion, and both members are engaged with each other so as to be appropriately rotatable with respect to each other with the sliding direction as a rotation axis. The expansion joint according to claim 1. 4. A connecting shaft having an appropriate length is provided so as to penetrate the moving rail member and the rail receiving member from above the moving rail member, and the connecting shaft is vertically movable with respect to the rail receiving member. The expansion joint according to claim 1. 5. A stopper is fixed near the tip of the connecting shaft protruding downward from the rail receiving member so that the stopper can move up and down along a guide arranged in a direction parallel to the axis of the connecting shaft. The expansion joint according to claim 4, which has a formed structure.