Joint cover device

Abstract

To provide a joint cover device preventing a space between covers from being left in an open state after movement of the covers, without forcibly restraining adjacent covers at an intersection of a joint.SOLUTION: A joint cover device 10 has: adjacent covers 26A1 and 26A2 that extend from one building 12 to another building 14 side surrounding the one building 12, sandwich a joint 16 to cover the joint 16 and are adjacent to each other, at an intersection 17 where the joints 16 intersect, in the diagonal direction thereof; and a stopper 20 that is provided at one cover 26A1 of the adjacent covers, arranged proximately to face laterally a side opposite to one cover 26A1 at the other cover 26A2, allows vertical relative displacement of the adjacent covers 26A1 and the 26A2, and suppresses lateral separation of the adjacent covers 26A1 from the 26A2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a joint covering device. [Background technology]

[0002] Patent Document 1 discloses a joint cover device having multiple cover bodies that span the joints between adjacent buildings and cover the joints. The cover bodies include cover bodies C1' and C2' that cover the intersections (corners) of the joints, and cover bodies C1 and C2 that are disposed outside the intersections. Cover bodies C1' and C2' are divided into a pair of left and right covers along the diagonal of the intersections, and the side edges facing the cover bodies C1 and C2 are connected to the cover bodies C1 and C2 via hinge connections. When the buildings are displaced relative to each other during an earthquake, the other side edges of the end cover bodies C1' and C2' at the joint intersections slide upward along the inclined bearing surfaces that are positioned perpendicular to each other. The end cover bodies C1' and C2' tilt around the hinge connections, thereby escaping the relative displacement.

[0003] Patent Document 2 discloses a floor joint device having a structure in which a joint plate connector is provided that connects a joint plate and a corner joint plate via a spring. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3942742 [Patent Document 2] Patent No. 4842902 Summary of the Invention [Problem to be solved by the invention]

[0005] Consider the case in Patent Document 1 where the cover (cover bodies C1', C2') divided at the intersection of the joints is supported, for example, on the building side inside the joint, and the inclined bearing surface is provided on the ground side outside the joint. The gap between the divided parts is approximately constant and small in the initial state, but during an earthquake, the cover moves diagonally across the intersection of the joints, and when the cover slides up and returns to the inclined bearing surface, the covers move up and down separately, which can cause the gap between the covers at the divided parts to remain wide. Because the cover is supported on the building side inside the joint, this gap widens from the inside to the outside of the joint, making it easily noticeable.

[0006] If the divided covers were restrained from each other in order to prevent this gap from occurring, the up and down movement of each cover would be restricted, which would cause strain on the covers, and could result in deformation of the covers or damage to the hinges connecting cover bodies C1, C2 and cover bodies C1', C2'.

[0007] In Patent Document 2, the covers are connected by a joint plate connector that uses a spring. However, the relative displacement of the cover is permitted only in the direction of the joint, and the relative displacement of the cover in the up-and-down direction is not permitted, so this joint plate connector cannot be applied to the divided portion of the cover in the diagonal direction of the intersection of the joint.

[0008] To prevent a gap between covers from remaining wide after the covers move, without forcibly restraining adjacent covers at the intersection of joints in a joint cover device. [Means for solving the problem]

[0009] The joint cover device of the first aspect is extended from one building to the other building surrounding the one building across a joint to cover the joint, and has covers that are adjacent to each other along the diagonal direction at the intersection where the joints intersect, and a stopper that is provided on one of the adjacent covers and is positioned closely opposite from the side of the other cover on the opposite side to the one cover side, allowing the adjacent covers to move relative to each other in the vertical direction and preventing the adjacent covers from moving away from each other in the horizontal direction.

[0010] In this joint cover device, stoppers are provided on adjacent covers along the diagonal direction at the intersection where the joints intersect. The stopper is provided on one of the adjacent covers and is laterally positioned on the other cover, opposite the one cover, closely facing the other cover. Furthermore, the adjacent covers are permitted to move relative to each other in the vertical direction, but are prevented from moving apart laterally. In other words, the relative displacement of the covers in the vertical direction is permitted, but the relative displacement in the horizontal direction is prevented. Therefore, without forcibly restraining the adjacent covers at the intersection of the joints, it is possible to prevent the gap between the covers from widening after the covers move.

[0011] In a second aspect, in the joint covering device according to the first aspect, the stopper is provided at a corner of the cover that is positioned diagonally outside the intersection.

[0012] In this joint cover device, the stopper is provided at the corner of the cover that is located diagonally outside the intersection, thereby effectively preventing the cover from separating laterally at the corner.

[0013] In a third aspect, in the joint cover device according to the first or second aspect, the stopper has a base portion provided at a portion of one of the covers facing the other building, and a protruding portion positioned closely opposite the portion of the other cover facing the other building.

[0014] In this joint cover device, the stopper has a base and a protruding portion. The base is provided at a portion of one cover facing the other building. The protruding portion is positioned adjacent to and facing the portion of the other cover facing the other building. In this way, a simple and low-cost configuration can be achieved. [Effects of the Invention]

[0015] According to the present invention, in a joint cover device, it is possible to prevent the gap between the covers from remaining wide after the covers move, without forcibly restraining adjacent covers at the intersection of the joints. [Brief explanation of the drawings]

[0016] [Figure 1] 1A is a plan view showing a joint covering device according to the present embodiment, and FIG. 1B is an enlarged view of a portion 1B in FIG. [Figure 2] 1A is a cross-sectional view showing the joint covering device according to the present embodiment, and FIG. 1B is an enlarged view of part 2B in FIG. [Figure 3] FIG. 2 is an enlarged perspective view showing the joint covering device according to the present embodiment. [Figure 4] This is a front view showing the state in which the cover on the right side of the paper is shifted above the cover on the left side of the paper when viewed from the outside in the diagonal direction of the joint. [Figure 5] This is a front view showing the cover on the right side of the paper and the cover on the left side of the paper aligned vertically when viewed from the outside in the diagonal direction of the joint. [Figure 6] This is a front view showing the state in which the cover on the left side of the paper is shifted lower than the cover on the right side of the paper when viewed from the outside in the diagonal direction of the joint. [Figure 7] 10A and 10B are diagrams showing the configuration of a connecting means for connecting the cover to one of the buildings. [Figure 8] This is an oblique view showing a state in which the height of the cover on the right side of the paper and the height of the cover on the left side of the paper are the same in a joint cover device according to a modified example, when viewed from the outside in the diagonal direction of the joint. [Figure 9]This is an oblique view showing a state in which, in a joint cover device relating to a modified example, the height of the cover on the right side of the paper is shifted higher than the height of the cover on the left side of the paper, and the stopper 20 has moved upward, when viewed from the outside in the diagonal direction of the joint. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same or similar components. Note that duplicated descriptions and reference numerals may be omitted in the embodiments described below. Furthermore, all drawings used in the following description are schematic, and the dimensional relationships and ratios of elements shown in the drawings do not necessarily correspond to the actual ones. Furthermore, the dimensional relationships and ratios of elements between multiple drawings do not necessarily correspond to the actual ones.

[0018] 1 and 2, a joint covering device 10 according to this embodiment is installed in a joint 16 between two adjacent buildings 12 and 14. The first building 12 is a building with a seismic isolation structure, the lower part of which is supported by a seismic isolation device (not shown), for example. The joint 16 is formed with a predetermined width along the periphery of the first building 12, and is designed to absorb relative horizontal shaking between the first building 12 and its surrounding building (the second building 14) during an earthquake. In FIGS. 1 to 3, the joint covering device 10 has a cover 26 and a stopper 20.

[0019] The covers 26 extend from one building 12 to the other building 14 surrounding the first building 12, across the joints 16, to cover the joints 16, and are adjacent to each other along the diagonal direction (direction of line X) at the intersection 17 where the joints 16 intersect. The covers 26 are formed in the shape of flat plates with a predetermined thickness that matches the depth of the horizontal receiving edge 18, and their base ends are swingably connected to the side edges of one of the buildings 12 via connecting means 38. Trapezoidal covers 26A1 and 26A2 are arranged at the intersection 17 of the joints 16, and a rectangular cover 26B is arranged elsewhere than at the intersection 17. Openings provided in parts of the base ends of the covers 26A1 and 26A2 are closed with lids 28.

[0020] 7, the connecting means 38 is configured to include, for example, a swing rail 40 provided on one of the buildings 12, and a swing bolt 42 provided on the cover 26. The surface of the swing rail 40 on the cover 26 side is curved convexly toward the cover 26. The swing rail 40 also has an elongated hole extending in the vertical direction. The swing bolt 42 can move up and down within the range of the elongated hole, thereby allowing the cover 26 to swing.

[0021] As shown in FIG. 2, a sliding support frame 24 is disposed on the side edge of the other building 14. The sliding support frame 24 includes a horizontal support edge 18 and an inclined support edge 22 that slopes upward from the outer end of the horizontal support edge 18. As shown in FIGS. 2 and 3, an end plate 34, for example, is provided at the free end 26F on the tip side of the cover 26. An end shielding plate 30 is provided on this end plate 34, protruding substantially horizontally from the free end 26F of the cover 26. The end shielding plate 30 is able to swing slightly up and down around a fulcrum (not shown) provided on the end plate 34. The end plate 34 is also provided with a shielding plate support 36 that limits the downward swing of the end shielding plate 30.

[0022] 1, the cover 26 is extended from one building 12 to the other building 14 to cover the joint 16, and as shown in FIG. 2, the free end 26F is slidably placed on the horizontal receiving edge 18 of the sliding receiving frame 24. In addition, the upper side of the operating gap 32 generated between the free end 26F and the inclined receiving edge 22 of the sliding receiving frame 24 is shielded by the end shielding plate 30.

[0023] 1(B) and 3, the stopper 20 is provided on one of the adjacent covers 26A1 along the diagonal direction (direction of line X) at the intersection 17 where the joints 16 intersect, and is also arranged on the other cover 26A2 closely facing the other cover 26A2 on the side opposite to the one cover 26A1 side. This stopper 20 is a member that allows the adjacent covers 26A1, 26A2 to move relative to each other in the vertical direction and prevents the adjacent covers 26A1, 26A2 from moving apart in the horizontal direction.

[0024] Specifically, as shown in FIG. 3 , the stopper 20 is provided at a corner of the covers 26A1 and 26A2 that is located diagonally outside the intersection 17 (direction of line X). The stopper 20 also has a base 20A provided at a portion of the cover 26A1 facing the other building 14, and a protruding portion 20B disposed adjacent to a portion of the cover 26B1 facing the other building 14. The base 20A and the protruding portion 20B are each formed in a flat plate shape and intersect with each other at approximately right angles in a plan view. As a result, the stopper 20 is formed into a substantially L-shape in a plan view. For example, the base 20A is fixed by welding to the center of the free end 26F in the up-down direction. The protruding portion 20B extends to overlap the outside of the free end 26F of the cover 26A2 and faces closely to the free end 26F.

[0025] The base 20A and the overhang 20B may be integrally configured or may be assembled from separate components. The base 20A does not necessarily need to be fixed to the free end 26F, but may be vertically adjustable, for example. Even in this case, it is desirable for the base 20A to be immovable laterally relative to the free end 26F so as to prevent the adjacent covers 26A1 and 26A2 from separating laterally from each other. The base 20A may also be switchable between a state in which it is movable laterally relative to the free end 26F and a state in which it is immovable. During installation or maintenance of the device, the positional relationship between the overhang 20B and the free end 26F of the cover 26A2 can be adjusted while the base 20A is movable, and then the base 20A is immovable during use, thereby preventing the adjacent covers 26A1 and 26A2 from separating laterally from each other.

[0026] Although the protruding portion 20B of the stopper 20 is not connected to the cover 26A2, this is not limited to this and the protruding portion 20B may be, for example, elastically connected to the cover 26A2 so as to allow the adjacent covers 26A1 and 26A2 to be displaced relative to each other in the vertical direction.

[0027] (action) This embodiment is configured as described above, and its operation will be described below. As shown in FIG. 2, under normal circumstances, cover 26 extends from one building 12 toward the other building 14, covering joint 16, with free end 26F slidably resting on horizontal support edge 18 of sliding support frame 24. As shown in FIG. 1(B), even under normal circumstances, a small gap S exists between adjacent covers 26A1 and 26A2 along the diagonal direction (direction of line X) at intersection 17 where joints 16 intersect. During an earthquake, when one building 12 approaches the other building 14, cover 26 climbs onto sliding support frame 24. At this time, covers 26A1 and 26A2 swing upward via connecting means 28, temporarily widening gap S between covers 26A1 and 26A2.

[0028] In this embodiment, a stopper 20 is provided on adjacent covers 26A1, 26A2. The stopper 20 is provided on one cover 26A1 and is arranged closely facing the other cover 26A2 from the side opposite to the one cover 26. Specifically, the stopper 20 has a base 20A and an overhang 20B. The base 20A is provided in a portion of the one cover 26A1 that faces the other building 14. The overhang 20B is arranged closely facing the portion of the other cover 26A2 that faces the other building 14.

[0029] Because the overhanging portion 20B is not fixed to the cover 26A2, the covers 26A1 and 26A2 are allowed to move relative to each other in the vertical direction. Fig. 4 shows the state in which the cover 26A2 is shifted upward relative to the cover 26A1 when viewed from the diagonal outside of the joint 16. Fig. 5 shows the state in which the covers 26A1 and 26A2 are aligned vertically. Fig. 6 shows the state in which the cover 26A2 is shifted downward relative to the cover 26A1.

[0030] On the other hand, when the covers 26A1 and 26A2 move relative to each other in the lateral direction, the free end 26F of the cover 26A2 comes into contact with the protruding portion 20B, thereby preventing the covers 26A1 and 26A2 from separating from each other in the lateral direction. Thus, according to this embodiment, the stopper 20 can be configured simply and at low cost.

[0031] Specifically, if the direction of movement of one of the structures 12 during an earthquake differs from the diagonal direction (direction of line X) of the intersection 17 of the joint 16, the degree to which the adjacent covers 26A1 and 26A2 climb onto the sliding receiving frame body 24 will differ. In other words, the free ends 26F of the covers 26A1 and 26A2 will be displaced relative to each other up and down. The stopper 20 according to this embodiment allows such relative displacement in the up and down direction, so there is no unreasonable restraint.

[0032] Meanwhile, because the stopper 20 prevents the adjacent covers 26A1, 26A2 from separating laterally from each other, the gap S between the covers 26A1, 26A2 is prevented from remaining wide after the earthquake subsides and one of the structures 12 and the covers 26A1, 26A2 return to their normal positions. If the gap S becomes too large when the covers 26A1, 26A2 ride up on the sliding receiving frame 24, the gap S may remain wide when the covers 26A1, 26A2 return to their normal positions. However, in this embodiment, such a phenomenon is less likely to occur. In particular, the stopper 20 is provided at the corner of the covers 26A1, 26A2 located diagonally outward of the intersection 17, where the gap S is likely to become large, and therefore the covers 26A1, 26A2 can be effectively prevented from separating laterally at the corner.

[0033] [Other embodiments] The above describes one example of an embodiment of the present invention, but the embodiment of the present invention is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0034] The stopper 20 is provided at a corner of the cover 26 that is located diagonally outside the intersection 17, but the stopper 20 may also be provided at a position closer to the base end (toward one of the buildings 12) than the corner.

[0035] (Variation) 8 and 9, in a joint covering device 10 according to a modified example, a stopper support member 44 is provided at the free end 26F of the cover 26A1. The stopper support member 44 is formed, for example, with a U-shaped cross section and is disposed across the base 20A of the stopper 20 from below to above. The stopper support member 44 is formed with, for example, two elongated holes 44A extending in the vertical direction. A bolt 46 is inserted into each of the elongated holes 44A from the outside. Although the bolts 46 are threadedly engaged with the base 20A of the stopper 20, the stopper 20 and the stopper support member 44 are not fixed to each other, and the stopper 20 is configured to be movable up and down within the range of the elongated holes 44A. In other words, the range of up and down movement of the stopper 20 is restricted by the elongated holes 44A.

[0036] In addition, a stopper receiver 48 is provided at the free end 26F of the cover 26A2. As shown in Fig. 8, this stopper receiver 48 is disposed in a position where it abuts against the underside of the protruding portion 20B of the stopper 20 when the heights of the covers 26A1 and 26A2 are aligned and the stopper 20 is located at the lower limit of the movement range defined by the elongated hole 44A.

[0037] In this modification, since the overhanging portion 20B is not fixed to the cover 26A2, the covers 26A1 and 26A2 are allowed to move relative to each other in the vertical direction. As shown in Fig. 9, when the cover 26A2 shifts upward relative to the cover 26A1 as viewed from the diagonal outside of the joint 16, the stopper receiver 48 lifts the stopper 20, causing the cover 26A2 to move toward the upper limit of the movement range defined by the elongated hole 44A. The cover 26A2 can then shift upward relative to the cover 26A1 until the stopper 20 reaches the upper limit of the movement range defined by the elongated hole 44A.

[0038] The stopper 20 can move up and down within the range of the elongated hole 44A, and when the bolt 46 reaches the bottom end of the elongated hole 44A, the stopper 20 cannot move further downward. Therefore, although not shown, when the cover 26A2 shifts downward relative to the cover 26A1, the stopper 20 is held at the lower limit of its movement range by the stopper support member 44, and the stopper receiver 48 moves away from the overhanging portion 20B. The cover 26A2 can then shift downward relative to the cover 26A1, for example, until the end shielding plate 30 of the cover 26A2 abuts against the overhanging portion 20B of the stopper 20.

[0039] As in the above embodiment, when the covers 26A1 and 26A2 move relatively in the lateral direction, the free end 26F of the cover 26A2 comes into contact with the protruding portion 20B, thereby preventing the covers 26A1 and 26A2 from moving apart in the lateral direction. [Explanation of symbols]

[0040] 10...joint cover device, 12...one building, 14...other building, 16...joint, 17...intersection, 18...horizontal receiving edge, 20...stopper, 20A...base, 20B...extending portion, 22...inclined receiving edge, 24...sliding receiving frame body, 26...cover, 26A1...cover, 26A2...cover, 26B...cover, 26F...free end, 28...lid, 30...end shielding plate, 32...operating gap, 34...end face plate, 36...shielding plate holder, 38...connecting means, 40...swing rail, 42...swing bolt, 44...stopper support member, 44A...long hole, 46...bolt, 48...stopper holder, S...gap, X-ray

Claims

1. covers that extend from one building to the other building surrounding the one building across a joint to cover the joint and are adjacent to each other along the diagonal direction at the intersection where the joints intersect; a stopper that is provided on one of the adjacent covers and that is laterally disposed on the other cover on the opposite side to the one cover side so as to closely face the other cover, allowing the adjacent covers to be displaced relative to each other in the up and down direction and preventing the adjacent covers from moving apart in the lateral direction; the stopper is provided at a corner of the cover that is located diagonally outside the intersection, the stopper has a base portion provided at a portion of one of the covers facing the other building, and a protruding portion disposed adjacent to and facing the portion of the other cover facing the other building, An end face plate is provided at a free end on the tip side of the cover, The end surface plate is provided with an end shielding plate that protrudes from the free end of the cover in a substantially horizontal direction, The end shielding plate is a joint cover device that is capable of swinging up and down above the stopper around a fulcrum provided on the end face plate.

2. A joint cover device as described in Claim 1, wherein a shielding plate holder is provided on the end face plate.

3. A joint cover device as described in claim 1 or claim 2, wherein the stopper is provided in the space between the corner-side ends of adjacent end face plates on either side of the corner, among the free ends on the tip side of the cover.

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