JP3445214B2 - Joint devices for seismic isolation buildings - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space between an outer wall surface of one building such as a seismic isolated building and a parapet or a wall of another building which is installed via a joint portion and is lower than the other building. The present invention relates to a joint device such as a seismic isolated building.

[0002]

2. Description of the Related Art Conventionally, an eaves-like lid is attached to the outer peripheral portion of a seismic isolated building to cover the joint between the seismic isolated building and a building or a wall provided via the joint.

[0003]

When the joint portion is covered with a conventional eaves-shaped lid, and when the joint portion is covered by the size of the joint portion, an opening is formed when the joint portion sways to widen due to an earthquake or the like. The size of the joint is about 2 so that the opening does not occur even if it shakes by the size of the joint.
When a lid having a double size is used, there is a drawback that when the joint swings so as to become narrow, the tip of the lid largely protrudes outward and crosses the boundary line.

In view of the above-mentioned conventional drawbacks, the present invention has been made.
Even if there is a shaking motion that narrows or widens by the size of the joint, the joint is not slid by moving the joint approximately half the size of the joint, and the joint does not open or protrude significantly outward. It is an object of the present invention to provide a joint device such as a seismic isolated building that can cover a part.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in view of the accompanying drawings. However, the drawings are only for explanation and do not limit the technical scope of the present invention.

[0006]

In order to achieve the above-mentioned object, the present invention provides a seismically isolated building or the like, which is installed via an outer wall surface and a joint portion of another building, which is lower than the other building. A lower cover device attached to the upper part of a building parapet or wall, and an upper cover device that covers the joint part with a rear end attached to the outer wall surface of the one building at the upper position of the lower cover device, A movable cover that is slidably mounted between the upper cover device and the lower cover device and covers the upper cover device and the lower cover device even when the size of the joint portion changes due to an earthquake or the like. And one end is attached to the outer wall surface on the joint side of the parapet or wall or the joint side of the lower cover device, and the other end is attached to the outer wall surface of the one building at a portion corresponding to the one end. A central maintenance device having at least two central pivot parts always located in the central portion of the joint part, and the movable cover attached to the central pivot parts of the at least two central maintenance devices. In a joint device such as a seismic isolated building consisting of a supporting member to which a rear end of the parapet is attached, the central maintenance device is fixed to the outer wall surface of the parapet and the outer wall surface of the one building in a substantially horizontal state. A pair of lower rails, a pair of upper rails fixed to the outer wall surface of the lower cover device and the one building at an upper position of the pair of lower rails in a substantially horizontal state, and the pair of lower rails At least two pairs of slide bars having both ends slidably mounted on the pair of upper rails in a slanting state and having rollers mounted on both ends. And a pivot shaft attached to a support member to which a rear end portion of the movable cover pivotally supported by a central pivot portion formed in the central portion of a pair of at least two slide bars is attached. To form a joint device.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIG. 1 to FIG. 14, reference numeral 1 denotes one of two buildings, such as a seismic isolated building, which is installed via an outer wall surface 2a of a building 2 and a joint 3. A joint device such as a seismic isolated building of the present invention that covers a space between a parapet 5 of the other building 4 lower than the building 2, and the joint device 1 of the seismic isolated building or the like is a lower cover attached to the upper surface of the parapet 5. The device 6, an upper cover device 7 for covering the joint part 3 having a rear end attached to the outer wall surface 2a of the one building 2 in the upper position of the lower cover device 6, the upper cover device 7, and the lower part A movable cover 8 slidably mounted between the cover device 6 and the movable cover 8 that covers between the upper cover device 7 and the lower cover device 6 even when the size of the joint portion changes due to an earthquake or the like; The outer wall surface 4 of the parapet 5 on the joint side And at least two central pivots, one end of which is attached to the joint side of the lower cover device 6, and the other end of which is attached to the outer wall surface 2a of the one building 2 at a portion corresponding to the one end. Central maintenance device 1 in which the supporting portions 9, 9, 9, 9 are always located in the central portion of the joint portion 3.
0, 10 and at least two central maintenance mechanisms 1
Mounted on 0,10 central pivots 9,9,9,9,
Support member 11 to which the rear end of the movable cover 8 is attached
It consists of and.

As shown in FIG. 5, the lower cover device 6 is provided with a plurality of mounting brackets 12 on the upper surface of the parapet 5, which is fixed on the upper surface of the one building 2 side and whose upper portion is located above. And a lower cover 14 fixed to the plurality of mounting brackets 12 with a plurality of screws 13, the plurality of mounting brackets 12 being, as shown in FIG.
A mounting member body 15 having a substantially triangular shape, a parapet fixing plate 16 integrally formed with a lower portion of the mounting member body 15 and projecting in a perpendicular direction, and the parapet fixing plate 16 integrally formed with an upper portion of the mounting member body 15. A lower cover supporting plate 17 projecting in a right angle direction opposite to the above, an upper mounting plate 18 projecting upward formed integrally with a rear end part of the lower cover supporting plate 17, and a tip part of the lower cover supporting plate 17. Lower mounting plate 19 formed integrally and protruding downward
As shown in FIG. 7, the lower cover 14 includes a lower cover support plate 1 for the plurality of mounting brackets 12.
7, a plate-shaped lower cover main body 20 supported by 7, an upper mounting plate 21 formed at the rear end of the lower cover main body 20 so as to project upward, and a lower end at the front end of the lower cover main body 20. The lower mounting plate 22 also serves as a drainer protruding in an L shape.

As shown in FIG. 8, the upper cover device 7 is fixed to the outer wall surface 2a of one building 2 with a plurality of screws 13 at predetermined intervals, and the upper part on the one building 2 side is located above. A plurality of upper mounting brackets 23 on the inclined surface,
An upper cover 24 fixed to the plurality of upper fittings 23 with a plurality of screws 13 and a rubber-made seal member 25 attached to the lower end of the tip of the upper cover 24. As shown in FIG. 9, the mounting bracket 23 includes an upper mounting bracket body 26 having a substantially triangular shape, an upper cover support plate 27 integrally formed with an upper portion of the upper mounting bracket body 26 and projecting at a right angle, and the upper mounting bracket. An upper fixing plate 28 integrally formed with a rear end portion of the main body 26 and protruding in a direction opposite to the upper cover support plate 27, and an upper mounting integrally formed with a rear end portion of the upper cover support plate 27. The upper cover 24 includes a plate 29 and a lower mounting plate 30 which is integrally formed with the tip of the upper cover support plate 27 and protrudes downward. The upper cover 24, as shown in FIG. Plate-shaped upper cover body 31 which is supported by the upper cover support plate 27 of the several upper mounting bracket 23
An upper mounting plate 32 which is integrally formed with a rear end portion of the upper cover body 31 and protrudes upward, and a lower mounting plate 33 which is integrally formed with a tip end portion of the upper cover body 31 and also serves as a water drainer. It consists of and.

The movable cover 8 is, as shown in FIG.
The plate-shaped movable cover body 34 and the movable cover body 34
An upper mounting plate 35 which is integrally formed with the rear end of the movable cover main body 34, and a lower mounting plate 36 which is integrally formed with the front end of the movable cover body 34 and which also serves as a drainer.
It is composed of a rubber-made seal member 37 attached to the lower attachment plate 36.

As shown in FIG. 12, the central maintenance devices 10 and 10 are fixed to the outer wall surface of the parapet 5 and the outer wall surface 2a of the one building 2 by a plurality of screws 38 so as to be substantially horizontal. Pair of lower rails 3
9, 39, a plurality of screws such that the lower cover support plate 17 of the lower cover device 6 at the upper position of the pair of lower rails 39, 39 and the outer wall surface 2a of the one building 2 are substantially horizontal. A pair of upper rails 40, 40 fixed by 38 and the pair of lower rails 39, 3
9 and the pair of upper rails 40, 40, the pair of slide bars 42, 42 having the rollers 41, 41, 41, 41 attached to the both ends, the both ends being slidably attached in an inclined state. Slide bars 42, 42
It is composed of a central pivot portion 9 formed in the central portion of the above and a pivot shaft 43 rotatably supported by the central pivot portion 9.

The support member 11 includes a support bar 44 pivotally supported by the pivot shafts 43, 43 of the at least two central maintenance devices 10, 10, and a plurality of rear end portions of the support bar 44 at predetermined intervals. The upper part fixed by a screw 45 is composed of a plurality of movable cover mounting brackets 46 having an inclined surface, and the plurality of movable cover mounting brackets 46 is a substantially triangular movable cover mounting plate 47 and this movable cover. A movable cover support plate 48 which is integrally formed on the upper part of the mounting plate 47 and which projects in a perpendicular direction; an upper movable cover mounting plate 49 which is integrally formed with the rear end of the movable cover support plate 48 and which projects upward; Lower movable cover mounting plate 5 that is integrally formed with the tip of the movable cover support plate 48 and projects downward.
It is composed of 0 and.

Reference numeral 51 is an upper waterproof sheet that can waterproofly cover the inner surface of the tip end of the upper cover 24 of the upper cover device 7 and the rear end of the movable cover 8 so as to extend and contract. Reference numeral 52 is a lower waterproof sheet that can waterproofly cover between the inner surface of the tip of the movable cover 8 and the rear end of the lower cover 14 of the lower cover device 6 so as to expand and contract.

The joint device 1 of the seismic isolation building or the like having the above-described structure has the central maintenance device 1 even if the joint portion 3 becomes narrow due to an earthquake or the like.
Support members 1 attached to 0,10 central pivots 9,9
In order to maintain the state in which the joints 1 and 11 are maintained in the central portion of the joint portion 3, as shown in FIG. 13, the tip end portion of the movable cover 8 is projected by about half the dimension of the joint portion 3 which is narrowed. , Absorb the shaking. Also, when the joint portion 3 is wide, as shown in FIG.
As a result, the support members 11, 11 are positioned at the center of the joint portion 3, and the rear end of the movable cover 8 is moved to the joint portion 3 side. Move half the size and absorb the shaking.

[0016]

Different Embodiments of the Invention Next, FIGS.
A different embodiment of the present invention shown in FIG. 1 and a joint device such as a seismic isolation building considered by the inventor of the present application will be described. In the description of these different embodiments of the present invention and joint devices such as a seismic isolation building considered by the inventor of the present application, the same components as those of the first embodiment of the present invention are designated by the same reference numerals. A duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 15 to 17 is mainly different from the first embodiment of the present invention in that the lower cover device 6 is attached to the outer wall surface of one building 2. Reinforcing bars 54, 54, which are fixed to the upper part of the wall 53 so as to be installed via the 2a and the joint part 3, and the pivot shafts 43, 43 are fixed to the lower slide bars 42, 42 by welding or the like at their lower ends. Even if the joint device 1A such as a seismic isolation building is configured in this manner in that the central maintenance devices 10A and 10A reinforced by 54 and 54 are used, the same effects as those of the first embodiment of the present invention. Is obtained.

The joint device for seismic isolation buildings and the like considered by the present inventor shown in FIGS. 18 to 20 is mainly different from the first embodiment of the present invention in that it has a square frame-shaped link mechanism 55. , The facing link 55a of this link mechanism 55,
Central pivot portion 9 in which both ends are pivotally supported by pivot pins 56, 56 and pivot shaft 43 is pivotally supported in the center portion of 55a.
A central maintenance mechanism 10B including a support bar 57 having
In view of using 10B, the joint device 1B of the seismic isolated building or the like configured as described above may be used.

The third embodiment of the present invention shown in FIGS. 21 to 23 is mainly different from the second embodiment of the present invention in that the movable cover 8A serving as a floor plate and the wall 5 are arranged.
3 is provided slidably on the upper surface of the building 3, and the joint 3 and the movable cover 8A are provided on the outer wall surface 2a of the one building 2.
The second embodiment of the present invention is applied to the joint device 1C such as a seismic isolated building in that the eave-shaped upper cover 24A that covers the portion installed in the joint portion 3 is used. The same action and effect as those of the above form can be obtained.

The joint device for seismic isolation buildings and the like considered by the present inventor shown in FIGS. 24 to 26 is mainly different from the third embodiment of the present invention in that the upper slide bar 42,
Reinforcing plates 58, 58 are attached to the shaft 42, and the pivot shaft 4 is attached to the central pivot portions 9, 9 of the upper slide bars 42, 42.
The joint device 1D such as a seismic isolated building may be constructed in that the support member 11A made of square pipe material is attached at 3 and 43.

The fourth embodiment of the present invention shown in FIGS. 27 to 30 is mainly different from the joint device such as the seismic isolated building shown in FIGS. 24 to 26 in the outer wall surface 2a of one building 2. One slide joint plate support 59 having a U-shaped cross section having a size approximately half that of the joint portion 3, and the one slide joint plate support movably supported by the one slide joint plate support 59. One joint plate 61 in which a locking piece 60 protruding downward is formed at the tip portion projecting from the tip portion of 59, and the other slide joint plate support body 62 having a U-shaped cross section on the upper portion of the wall 53.
And the other, in which the locking piece 63 protruding upward is formed at the tip end portion protruding from the tip end portion of the other slide joint plate support body 62 slidably supported by the other slide joint plate support body 62. Joint plate 64
And the one joint plate 6 on the pivot 43A formed in a crank shape attached to the slide bars 42, 42.
A locking piece 65 that engages with the locking piece 60 of the one joint plate 61 is formed at one end that is pivotally supported so that one end on one side is supported, and the other joint plate is at the other end. 64
The joint device 1E such as a seismic isolated building may be configured in this manner in that the central joint plate 67 is formed with the engaging piece 66 that engages with the engaging piece 63 of FIG.

In each of the above-described embodiments of the present invention, the slide bar and the rectangular frame-shaped link mechanism are used as the central maintenance device, but the present invention is not limited to this, and the pattern graph shape and the rack are used. Any structure may be used as long as it has a conventionally used structure such as a central maintenance device using a pinion.

[0023]

As is apparent from the above description, the following effects can be obtained in the present invention.

(1) A lower cover installed on the upper wall of a building such as a seismic isolated building through the outer wall surface and joint of one building, which is lower than the other building and is a parapet of the other building. A device, an upper cover device for covering the joint part having a rear end attached to the outer wall surface of the one building at the upper position of the lower cover device, and a slide between the upper cover device and the lower cover device. A movable cover that is movably attached and covers the space between the upper cover device and the lower cover device even when the size of the joint portion changes due to an earthquake or the like, and the outer wall surface of the parapet or wall on the joint portion side. Alternatively, at least two central pivots each having one end attached to the joint side of the lower cover device and the other end attached to the outer wall surface of the one building at a portion corresponding to the one end A center maintaining device whose portion is always located at the center of the joint, and a supporting member attached to the central pivot of the at least two central maintaining devices, to which the rear end of the movable cover is attached. In a joint device such as a seismic isolated building, the central maintenance device is fixed to the outer wall surface of the parapet and the outer wall surface of the one building in a substantially horizontal state, and a pair of lower rails, and a pair of the lower rails. A pair of upper rails fixed to the lower cover device in the upper position and the outer wall surface of the one building so as to be substantially horizontal, and the pair of lower rails and the pair of upper rails with both ends in an inclined state. At least two or more pair of slide bars having rollers attached to both ends which are slidably mounted, and at least two or more pair of slide bars. The movable cover, which is rotatably supported by the central pivot portion formed in the central portion, is attached to the supporting member to which the rear end portion of the movable cover is attached. It is possible to absorb the swaying movement of the cover by sliding the cover by about half the size at which the joint becomes narrower or wider. Therefore, since the moving amount of the movable cover can be suppressed to a small value, the movable cover can be installed even when there is an obstacle in the direction of the distal end of the movable cover without the distal end of the movable cover protruding largely as in the conventional case. it can.

(2) By virtue of the above (1), it is possible to absorb the swaying motion by the size of the joint portion. Therefore, it can be sufficiently used for a seismic isolated building or the like in which a large shaking motion is set.

(3) According to the above (1), when the shaking motion such as an earthquake occurs, only the movable cover can be slid by the central maintenance device and the supporting member to absorb the shaking motion. Therefore, since the sliding movement is performed only by the movable cover, the structure is simple and it can be easily installed.

(4) Claims 2 and 3 are also the above (1) to (3).
The same effect as can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a front view of the first embodiment of the present invention.

FIG. 3 is a plan view of the first embodiment of the present invention.

FIG. 4 is a bottom view of the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a lower cover device according to the first embodiment of this invention.

FIG. 6 is an explanatory diagram of a mounting member according to the first embodiment of this invention.

FIG. 7 is an explanatory diagram of a lower cover according to the first embodiment of this invention.

FIG. 8 is an explanatory diagram of an upper cover device according to the first embodiment of this invention.

FIG. 9 is an explanatory diagram of an upper mounting member according to the first embodiment of this invention.

FIG. 10 is an explanatory diagram of an upper cover according to the first embodiment of this invention.

FIG. 11 is an explanatory diagram of a movable cover according to the first embodiment of this invention.

FIG. 12 is an explanatory diagram of the central maintenance device according to the first embodiment of the present invention.

FIG. 13 is an operation explanatory diagram when the joint portion is narrowed according to the first embodiment of this invention.

FIG. 14 is an operation explanatory diagram when the joint portion according to the first embodiment of the present invention is widened.

FIG. 15 is a sectional view of the second embodiment of the present invention.

FIG. 16 is a plan view of the second embodiment of the present invention.

FIG. 17 is an explanatory diagram of the central maintenance device according to the second embodiment of the present invention.

FIG. 18 is a cross-sectional view of a joint device such as a seismic isolated building considered by the inventor of the present application.

FIG. 19 is a plan view of a joint device such as a seismic isolated building considered by the inventor of the present application.

FIG. 20 is an explanatory diagram of a central maintenance device of a joint device such as a seismic isolated building, which the inventor of the present invention considered.

FIG. 21 is a sectional view of the third embodiment of the present invention.

FIG. 22 is a front view of the third embodiment of the present invention.

FIG. 23 is a plan view of the third embodiment of the present invention.

FIG. 24 is a sectional view of a joint device such as a seismic isolated building considered by the inventor of the present application.

FIG. 25 is a plan view of a joint device such as a seismic isolated building considered by the inventor of the present application.

FIG. 26 is an explanatory diagram of a central maintenance device of a joint device such as a seismic isolated building, which is considered by the inventor of the present application.

FIG. 27 is a sectional view of the fourth embodiment of the present invention.

FIG. 28 is a plan view of the fourth embodiment of the present invention.

FIG. 29 is an operation explanatory diagram when the joint portion according to the fourth embodiment of the present invention is narrowed.

FIG. 30 is an operation explanatory diagram when the joint portion according to the fourth embodiment of the present invention is widened.

[Explanation of symbols]

1, 1A to 1E: joint device such as a seismic isolated building, 2: one building, 3: joint part, 4: other building,
5: Parapet, 6: Lower cover device, 7: Upper cover device, 8 and 8A: Movable cover, 9: Central pivot part,
10, 10A, 10B: central maintenance device, 11, 11A:
Support member, 12: mounting bracket, 13: screw,
14: Lower cover, 15: Mounting bracket body, 16:
Parapet fixing plate, 17: lower cover support plate, 18: upper mounting plate, 19: lower mounting plate, 20: lower cover body, 21: upper mounting plate, 22: lower mounting plate, 23: upper mounting bracket, 24, 24A : Upper cover, 25: sealing member, 26: upper mounting metal fitting body, 27: upper cover support plate, 28: upper fixing plate, 2
9: Upper mounting plate, 30: Lower mounting plate, 31: Upper cover body, 32: Upper mounting plate, 33: Lower mounting plate, 34: Movable cover body, 35: Upper mounting plate, 36: Lower mounting plate, 37: Sealing member,
38: screw, 39: lower rail, 40: upper rail, 41: roller, 42: slide bar,
43, 43A: pivot shaft, 44: support bar, 45: screw, 46: movable cover mounting bracket, 47:
Movable cover mounting plate, 48: Movable cover support plate, 49:
Upper movable cover, 50: Lower movable cover mounting plate, 5
1: upper waterproof sheet, 52: lower waterproof sheet, 53:
Wall, 54: reinforcing bar, 55: link mechanism, 56: pivot pin, 57: support bar,
58: Reinforcement plate 59: One slide joint plate support, 60: Locking piece, 61: One joint plate, 62: The other slide joint plate support, 63:
Locking piece, 64: Other joint plate, 65:
Locking piece, 66: locking piece, 67: central joint plate.

Claims (3)

(57) [Claims] 1. A lower cover device installed on an upper wall of a building such as a seismic isolated building, which is installed via an outer wall surface and a joint portion of the building and is lower than the other building and is a parapet of the other building. And an upper cover device for covering the joint part, the rear end of which is attached to the outer wall surface of the one building at the upper position of the lower cover device, and a sliding movement between the upper cover device and the lower cover device. Even if the size of the joint portion that can be attached is changed by an earthquake or the like, a movable cover that covers between the upper cover device and the lower cover device, and the outer wall surface of the parapet or wall on the joint portion side or At least two or more central pivot parts, one end of which is attached to the joint side of the lower cover device, and the other end of which is attached to the outer wall surface of the one building at a portion corresponding to the one end. Seismic isolation consisting of a central maintenance device that is always located in the central portion of the joint and a support member that is attached to the central pivot of the at least two central maintenance devices and to which the rear end of the movable cover is attached. In a joint device such as a building, the central maintenance device is fixed to the outer wall surface of the parapet and the outer wall surface of the one building in a substantially horizontal state, and a pair of lower rails, and an upper position of the pair of lower rails. A pair of upper rails fixed to the lower cover device and the outer wall surface of the one building in a substantially horizontal state, and both ends slidingly slanted to the pair of lower rails and the pair of upper rails. At least two pairs of slide bars with rollers attached at both ends, and the center of the pair of slide bars. A joint device for a seismic isolated building or the like, characterized in that the joint device is constituted by a central pivot portion formed on the . 2. One of the buildings, such as a seismic isolated building, which is installed via an outer wall surface and a joint portion of the other building, and is attached to the parapet of the other building lower than the one building or the upper part of the wall. Side upper part is located on the upper side of a plurality of mounting brackets on the inclined surface, the upper side end part mounted so as to be supported by the mounting part is upward, and the lower side end part is projecting downward. A lower cover device, and a plurality of upper mounting brackets having an inclined surface with a rear end part attached to the outer wall surface of the one building at an upper position of the lower cover device, the upper part on the tip end side being located downward, An upper cover device having a rear end attached so as to be supported by an upper mounting member and an upper cover for covering the joint part having a tip protruding downward, and the upper cover device and the lower cover device. Sly between Even if the size of the joint is movably attached and changes due to an earthquake or the like, the one building side covering the space between the upper cover device and the lower cover device projects upward and the lower cover device side projects downward. A movable cover and an outer wall surface on the joint side of the parapet or a wall or the joint side of the lower cover device, and one end is attached to the outer wall surface of the one building at a portion corresponding to the one end. A central retainer having at least two central pivots with attached ends, always located in the central portion of the joint, and a central pivot of the at least two central retainers, In a joint device such as a seismic isolated building consisting of a supporting member to which a rear end of a movable cover is attached, the central maintenance device is provided on the outer wall surface of the parapet and the outer wall surface of the one building. A pair of lower rails fixed so as to be substantially horizontal, and a pair of lower rails fixed at an upper position of the pair of lower rails and the outer wall surface of the one building so as to be substantially horizontal. An upper rail, a pair of lower rails, and a pair of at least two slide bars having rollers attached to both ends, both ends slidably attached to the pair of lower rails in an inclined state; And a pivot shaft attached to a support member to which a rear end portion of the movable cover pivotally supported by a central pivot portion formed in the central portion of a pair of two or more slide bars is attached. A joint device for seismic isolated buildings, etc. 3. Almost half of the joint portion installed on the outer wall surface of one of the buildings, which is located above the upper surface of the wall so as to be installed through the joint surface and the outer wall surface of one building such as a seismic isolated building. One slide joint plate support having a U-shaped cross-section with the dimension of and a tip portion protruding from the tip of the one slide joint plate support slidably supported by the one slide joint plate support. One joint plate having a locking piece protruding downward, the other slide joint plate support member having a U-shaped cross section on the upper part of the wall, and the other slide joint plate support member slidably supported by the other slide joint plate support member. The other joint plate having a locking piece projecting upward at the tip portion projecting from the tip portion of the other slide joint plate support, and one end of the outside of the joint portion side of the building. At least two central maintenance devices each having a central pivot portion attached to a wall surface and the other end portion attached to the outer wall surface on the side of the joint portion of the wall, which is always located in the central portion of the joint portion; A crank-shaped pivot shaft attached to the central pivots of two or more central maintenance devices supports the one end on the joint plate side so that the one end on the joint plate side is supported. A locking piece is formed to be engaged with the locking piece of the joint plate, and a locking piece is formed at the other end to be engaged with the locking piece of the other joint plate, and the central joint plate is formed. Joint device for seismically isolated buildings.