Joint cover support mechanism, floor joint device, and ceiling joint device

Abstract

To provide a joint cover support mechanism, floor joint device, and ceiling joint device that can prevent the joint cover from sagging downwards and absorb shaking caused by earthquakes. [Solution] The joint cover support mechanism, which supports the joint cover installed between structural members, is composed of a plurality of support members. The support members consist of a rectangular tubular support arm, one end of which is attached to one structural member or the other structural member and the other end of which protrudes toward the opposing structural member; an extendable arm, one end of which is attached to one structural member or the other structural member and the other end of which is inserted into the support arm so as to be movable in the left-right direction; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and an auxiliary support arm, one end of which is attached near one end of the extendable arm and the other end of which is supported by the guide rail. The upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane.

Description

Technical Field

[0001] The present invention relates to a joint cover support mechanism for supporting a joint cover that closes a clearance portion between bodies, a floor joint device, and a ceiling joint device.

Background Art

[0002] Conventionally, as a joint cover support mechanism for supporting a joint cover used in devices such as a floor joint device and a ceiling joint device that close a clearance portion between floor surfaces, for example, "a square pipe-shaped support cylinder and a support arm slidably inserted into the square pipe-shaped support cylinder in the left-right direction, and a plurality of support members are attached such that adjacent support members are in opposite left-right directions" is known. As a floor joint device using such support members, "a floor joint device provided in a joint portion between left and right bodies, including a plurality of support members provided on the left and right bodies, a plurality of link mechanisms provided on the left and right bodies at a predetermined interval in the front-rear direction, a central joint cover attached to a central pivot portion of the link mechanism and covering the central portion of the joint portion, a pair of end joint covers each having one end attached to an end pivot portion of the link mechanism or the left and right bodies, a pair of intermediate joint covers attached to an intermediate pivot portion between the central pivot portion and the end pivot portion of the link mechanism so as to be movable in the vertical direction and provided between the central joint cover and the pair of end joint covers, and a plurality of support plates provided at contact portions between the central joint cover and the pair of intermediate joint covers and at contact portions between the pair of intermediate joint covers and the pair of end joint covers, and supporting the bottom surfaces of the protruding end portions of the pair of end joint covers, the left and right end portions of the pair of intermediate joint covers, and the left and right end portions of the central joint cover. The central joint cover, the end joint covers, the intermediate joint covers, and the support plates are each supported by the support members, and when the left and right bodies sway so that the joint portion becomes narrower due to an earthquake, the intermediate joint cover rises upward to absorb the swaying movement" is known (Patent Document 1).

[0003] However, when using such a joint cover support mechanism, while it can support the joint cover without problems if the load on it is not large, the support arm does not support the joint cover, so there is a risk that it will sag downwards if a load is placed on the joint cover by passing vehicles or other objects.

[0004] Furthermore, as a joint cover support mechanism used in floor joint devices that are subjected to large loads and ceiling joint devices that use multiple joint covers, a joint cover support mechanism that uses a "link mechanism in which links are connected so that the overall shape is roughly an inverted triangle or a triangle when viewed from the front" as described in Patent Documents 2 and 3, was known.

[0005] Furthermore, ceiling joint devices primarily use a link mechanism to support the joint cover. When the clearance narrows during an earthquake, the link mechanism protrudes significantly upwards, which can limit the locations where the device can be installed, such as clearance areas with ample overhead space. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2018-3519 [Patent Document 2] Japanese Patent Publication No. 2014-218865 [Patent Document 3] Japanese Patent Publication No. 2020-111929 [Overview of the project] [Problems that the invention aims to solve]

[0007] In view of the above-mentioned drawbacks of conventional joints, the present invention aims to provide a joint cover support mechanism, a floor joint device, and a ceiling joint device that can prevent the joint cover from sagging downward when a load is applied, can be installed in a small space, and can absorb shaking caused by earthquakes.

[0008] The aforementioned and other objectives and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.

[0009] However, the drawings are for illustrative purposes only and do not limit the technical scope of the present invention. [Means for solving the problem]

[0010] To achieve the above objective, the joint cover support mechanism of the present invention as described in claim 1 is a joint cover support mechanism that supports a joint cover installed in a clearance portion formed between one structural body and the other structural body, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, the support members comprising a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body side, an extendable arm with one end attached to the one structural body or the other structural body and the other end being inserted into the interior of the support arm so as to be movable in the left-right direction, a guide rail provided on the side surface of the support arm so as to extend in the left-right direction, and an auxiliary support arm with one end attached near one end of the extendable arm and the other end being supported by the guide rail, wherein the upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane.

[0011] The joint cover support mechanism according to claim 2 is characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the guide rails.

[0012] The joint cover support mechanism according to claim 3 is a joint cover support mechanism that supports a joint cover installed in a clearance portion formed between one structural body and the other structural body, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, the support members comprising: a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body side; an extendable arm with one end attached to the one structural body or the other structural body and the other end protruding toward the support arm side; and a member with one end inserted into the support arm and the other end inserted into the extendable arm The support arm comprises an intermediate arm, a guide rail extending horizontally from the side of the support arm, an intermediate auxiliary support arm with one end attached near one end of the intermediate arm and the other end supported by the guide rail, an intermediate guide rail extending horizontally from the side of the intermediate arm, and an auxiliary support arm with one end attached near one end of the telescopic arm and the other end supported by the intermediate guide rail, characterized in that the upper surface of the support arm, the upper surface of the intermediate auxiliary support arm and the auxiliary support arm are the same or substantially the same plane.

[0013] The joint cover support mechanism according to claim 4 is characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, the intermediate auxiliary support arms are provided on the front-rear side surfaces of the intermediate arm and are supported by the guide rails, the intermediate guide rails are provided on the front-rear side surfaces of the intermediate arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the intermediate guide rails.

[0014] The floor joint device according to claim 5 is a floor joint device for closing a clearance between one structural body and the other structural body, comprising: a joint cover support mechanism provided on the one structural body and the other structural body; a plurality of joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, and one end of each support member is attached to either the one structural body or the other structural body. The support arm is characterized by comprising: a rectangular tubular support arm with the other end protruding toward the opposing structural body; an extendable arm with one end attached to one or the other structural body and the other end inserted into the support arm so as to be movable in the left-right direction; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and an auxiliary support arm with one end attached near one end of the extendable arm and the other end supported by the guide rail, wherein the upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane (substantially the same height).

[0015] The floor joint device according to claim 6 is characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the guide rails.

[0016] The floor joint device according to claim 7 is a floor joint device for closing a clearance between one structural body and another structural body, comprising: a joint cover support mechanism provided on the one structural body and the other structural body; a plurality of joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, the support members comprising: a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body side; and a member with one end attached to the one structural body or the other structural body and the other end protruding toward the support arm side The support arm comprises an extendable arm, an intermediate arm with one end inserted into the support arm and the other end into which the extendable arm is inserted, a guide rail provided on the side of the support arm so as to extend in the left-right direction, an intermediate auxiliary support arm with one end attached near one end of the intermediate arm and the other end supported by the guide rail, an intermediate guide rail provided on the side of the intermediate arm so as to extend in the left-right direction, and an auxiliary support arm with one end attached near one end of the extendable arm and the other end supported by the intermediate guide rail, wherein the upper surface of the support arm, the upper surface of the intermediate auxiliary support arm and the auxiliary support arm are formed to be the same or substantially the same plane.

[0017] The floor joint device according to claim 8 is characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, the intermediate auxiliary support arms are provided on the front-rear side surfaces of the intermediate arm and are supported by the guide rails, the intermediate guide rails are provided on the front-rear side surfaces of the intermediate arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the intermediate guide rails.

[0018] The joint cover of the floor joint device according to claim 9 comprises a mounting member whose bottom is supported by the joint cover support mechanism and a joint cover body attached to the mounting member, wherein the mounting member comprises a first mounting member whose bottom is supported by the joint cover support mechanism and a second mounting member provided above the first mounting member via a spacer and to which the joint cover body is fixed, and the telescopic link mechanism is provided in the gap between the first mounting member and the second mounting member.

[0019] The ceiling joint device according to claim 10 is a ceiling joint device for closing a clearance between one structural body and another structural body, comprising: a joint cover support mechanism provided on the one structural body and the other structural body; a plurality of ceiling joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of ceiling joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, the support member comprising: a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body side; an expandable arm with one end attached to the one structural body or the other structural body and the other end inserted into the support arm so as to be movable in the left-right direction; and the support arm The ceiling joint cover is composed of a guide rail extending horizontally along the side and an auxiliary support arm, one end of which is attached near one end of the telescopic arm and the other end of which is supported by the guide rail, wherein the upper surface of the support arm and the upper surface of the auxiliary support arm are the same or substantially the same plane, and the ceiling joint cover is composed of a mounting member whose bottom is supported by the joint cover support mechanism and a ceiling joint cover body attached to the mounting member, wherein the mounting member is composed of a first mounting member whose bottom is supported by the joint cover support mechanism and a second mounting member provided below the support member via a connecting member to the first mounting member and to which the ceiling joint cover body is fixed, wherein the connecting member is provided so as to penetrate the pivot portion of the telescopic link mechanism.

[0020] The ceiling joint device according to claim 11 is characterized in that the guide rails are provided on the front-rear and rear-direction sides of the support arm, and the auxiliary support arms are provided on the front-rear and rear-direction sides of the telescopic arm and are supported by the guide rails.

[0021] The ceiling joint device according to claim 12 is a ceiling joint device for closing a clearance between one structural frame and another structural frame, comprising: a joint cover support mechanism provided on the one structural frame and the other structural frame; a plurality of ceiling joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of ceiling joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural frame and the other structural frame. The support member comprises a rectangular tubular support arm with one end attached to one of the structures or the other, and the other end protruding toward the opposing structure; an extendable arm with one end attached to one of the structures or the other, and the other end protruding toward the support arm; an intermediate arm with one end inserted into the support arm and the other end into which the extendable arm is inserted; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and one end of the intermediate arm The ceiling joint cover comprises an intermediate auxiliary support arm with one end attached nearby and the other end supported by the guide rail, an intermediate guide rail provided on the side of the intermediate arm so as to extend in the left-right direction, and an auxiliary support arm with one end attached near one end of the telescopic arm and the other end supported by the intermediate guide rail, wherein the upper surface of the support arm, the intermediate auxiliary support arm and the auxiliary support arm are formed to be the same or substantially the same plane, and the ceiling joint cover comprises a mounting member whose bottom is supported by the joint cover support mechanism and a ceiling joint cover body attached to the mounting member, wherein the mounting member comprises a first mounting member whose bottom is supported by the joint cover support mechanism and a second mounting member provided below the support member via a connecting member to the first mounting member and to which the ceiling joint cover body is fixed, wherein the connecting member is provided so as to penetrate the pivot portion of the telescopic link mechanism.

[0022] In the ceiling joint device according to claim 13, the guide rails are respectively provided on the front and rear side surfaces of the support arm, the intermediate auxiliary support arms are respectively provided on the front and rear side surfaces of the intermediate arm, and are respectively supported by the guide rails. The intermediate guide rails are respectively provided on the front and rear side surfaces of the intermediate arm, and the auxiliary support arms are respectively provided on the front and rear side surfaces of the telescopic arm and are respectively supported by the intermediate guide rails.

Advantages of the Invention

[0023] As is clear from the above description, the following advantages can be obtained in the present invention. (1) In each of the inventions according to claims 1 to 8, not only the support arm but also the auxiliary support arm and the like can support the bottom of the joint cover. Therefore, even when a load is applied to the joint cover, it is possible to reliably prevent the joint cover from deflecting. (2) In the invention according to claim 9, the same operational effects as those in (1) can be obtained. In addition, since the telescopic link mechanism is provided in the gap between the first mounting member and the second mounting member, the telescopic link mechanism can be connected to both the first mounting member and the second mounting member. During an earthquake, the expansion and contraction of the telescopic link mechanism are transmitted to the first mounting member and the second mounting member substantially evenly, and the telescopic link mechanism can be smoothly expanded and contracted without deflecting to one side. (3) In each of the inventions according to claims 10 to 13, the joint cover can be suspended and installed, and the clearance portion can be closed. Therefore, it can be installed without securing a large space.

Brief Description of the Drawings

[0024] Figs. 1 to 9 are explanatory views showing a first embodiment of the present invention. Figs. 10 to 14 are explanatory views showing a second embodiment of the present invention. Figs. 15 to 19 are explanatory views showing a third embodiment of the present invention. [Figure 1] A plan view of the floor joint device according to the first embodiment. [Figure 2] A cross-sectional view along line 2-2 in Figure 1. [Figure 3] A cross-sectional view along line 3-3 in Figure 1. [Figure 4] A plan view of the joint cover support mechanism of the first embodiment. [Figure 5] A cross-sectional view along line 5-5 in Figure 4. [Figure 6] Diagram illustrating the support arm. [Figure 7] Diagram illustrating the retractable arm. [Figure 8] An explanatory diagram showing the operation of a floor joint device when the clearance area has narrowed due to an earthquake. [Figure 9] An explanatory diagram showing the operation of a floor joint device when the clearance area has widened due to an earthquake. [Figure 10] A plan view of the floor joint device according to the second embodiment. [Figure 11] A cross-sectional view along line 11-11 in Figure 10. [Figure 12] A plan view of the joint cover support mechanism of the second embodiment. [Figure 13] A cross-sectional view of the main section along line 13-13 in Figure 12. [Figure 14] Diagram illustrating the intermediate arm. [Figure 15] Bottom view of the ceiling joint device according to the third embodiment. [Figure 16] A cross-sectional view along line 16-16 in Figure 15. [Figure 17] A cross-sectional view along line 17-17 in Figure 15. [Figure 18] An explanatory diagram showing the operation of a ceiling joint device when the clearance area has narrowed due to an earthquake. [Figure 19] An explanatory diagram showing the operation of a ceiling joint device when the clearance area has widened due to an earthquake. [Modes for carrying out the invention]

[0025] The present invention will be described in detail below with reference to embodiments for carrying out the invention shown in the drawings.

[0026] In the first embodiment for carrying out the present invention shown in Figures 1 to 9, 1 is a floor joint device installed between one structural frame 3 and the other structural frame 4, which are provided via a clearance portion 2.

[0027] Note that the left-right direction refers to the left-right direction (the direction in which the support member extends) in Figure 1 (plan view), the front-back direction refers to the up-down direction (the direction perpendicular to the left-right direction) in Figure 1, and the up-down direction refers to the up-down direction in Figure 2.

[0028] Furthermore, in this invention, "structure" refers to a structure on which joint covers can be installed, such as a building, road, slab, or elevator shaft, and "entrance" includes not only entrances with doors or gates, but also passages through which people, vehicles, etc., can pass.

[0029] As shown in Figures 1 to 3, the floor joint device 1 of this embodiment consists of a joint cover support mechanism 5 of the present invention provided on one structural frame 3 and the other structural frame 4, a plurality of joint covers 6 supported by the joint cover support mechanism 5, and an expandable link mechanism 7 that adjusts the spacing between the plurality of joint covers 6 to be approximately equal at all times.

[0030] A joint cover support mechanism 5 of the present invention is provided in the clearance portion 2 between one structural frame 3 and the other structural frame 4. This joint cover support mechanism 5 is capable of supporting joint covers 6 used in floor joint devices 1 and ceiling joint devices 22, etc., and in this embodiment, it supports the joint cover 6 of the floor joint device 1. As shown in Figures 4 to 7, this joint cover support mechanism 5 is composed of a plurality of support members 8 provided between one structural frame and the other structural frame, and in this embodiment, adjacent support members 8 are installed so that they face in opposite directions.

[0031] The support member 8 consists of a rectangular tubular support arm 9, one end of which is attached to one of the structural bodies 3 or the other structural body 4 and the other end of which protrudes toward the opposing structural body; an extendable arm 10, one end of which is attached to one of the structural bodies or the other structural body and the other end of which is inserted into the support arm 9 so as to be movable in the left-right direction; a guide rail 11 provided on the side surface of the support arm 9 so as to extend in the left-right direction; and an auxiliary support arm 12, one end of which is attached near one end of the extendable arm 10 and the other end of which is slidably supported by the guide rail.

[0032] As shown in Figure 6, the support arm 9 is a roughly rectangular tubular metal member with an opening at the other end into which the telescopic arm 10 is inserted. One end of the support arm 9 is mounted so as to be rotatable vertically and horizontally on the wall surface on the clearance portion 2 side of one structural body 3 or the other structural body 4, and its upper surface supports the joint cover 6. Guide rails 11, which are roughly crank-shaped or roughly angle-shaped in cross-section, are provided on the horizontal sides of the support arm 9. Note that the guide rails 11 may be provided on only one of the horizontal sides. As shown in Figure 7, the telescopic arm 10 is a metal member that is roughly rectangular or prismatic in shape. One end is attached to the wall surface on the clearance portion 2 side of one building structure 3 or the other building structure 4 so as to be rotatable in the vertical and horizontal directions, and the other end is inserted into the support arm 9 so as to be movable in the horizontal direction. It is preferable to provide sliding members such as rollers near the other end of the telescopic arm 10 or inside the support arm 9. By providing such sliding members, the telescopic arm 10 can be smoothly slid in the horizontal direction during an earthquake. These sliding members may also be used as stoppers to prevent the telescopic arm 10 from falling out of the support arm 9.

[0033] On the front-rear sides of the telescopic arm 10, there are auxiliary support arms 12, one end of which is attached near the other end of the arm and the other end of which is supported by the guide rail 11. In plan view, the auxiliary support arms 12 are formed in a roughly crank shape, and the other end of which is always supported by the guide rail 11. Furthermore, the upper surface of the auxiliary support arms 12 is formed to be the same as or substantially the same as the upper surface of the support arm 9, and the joint cover 6 can be supported by the upper surface of the support arm 9 and the upper surface of the auxiliary support arms 12. The joint cover 6 supported by the joint cover support mechanism 5 consists of a bar-shaped mounting member 13 whose bottom is supported by the joint cover support mechanism 5, and a joint cover body 14 attached to the mounting member 13.

[0034] Multiple joint covers 6 are provided, and the spacing between adjacent joint covers 6 is adjusted using an expandable link mechanism 7 to close the clearance area 2. This telescopic link mechanism 7 has one end attached to one structural frame 3 and the other end attached to the other structural frame 4. This telescopic link mechanism 7 has a plurality of pivot points 7a, to which mounting members 13 are connected to each pivot point 7a, adjusting the spacing between the plurality of joint covers 6.

[0035] The mounting member 13 may be formed from a single bar-shaped member, but in this embodiment, it is composed of a first mounting member 15 in the shape of a rectangular column or rectangular pipe whose bottom is supported by the joint cover support mechanism 5, and a second mounting member 17 in the shape of a rectangular column or rectangular pipe which is provided above the first mounting member 15 via a spacer 16 and to which the joint cover body 14 is fixed on the upper surface, and the telescopic link mechanism 7 is provided in the gap between the first mounting member 15 and the second mounting member 17. Specifically, the pivot points of the telescopic link mechanism 7 are connected to both the first mounting member 15 and the second mounting member 17 to adjust the spacing between the joint covers 6. The joint cover body 14 is a plate-shaped member formed in a roughly crank shape in cross-section, and it overlaps with adjacent joint cover bodies 14 in part, allowing it to completely seal the clearance portion 2 without any gaps.

[0036] When the structural members 3 and 4 sway from side to side during an earthquake and the clearance section 2 narrows, the floor joint device 1 of the present invention, as shown in Figure 8, has a retractable link mechanism 7 that contracts, increasing the overlap width of the joint cover bodies 14 of adjacent joint covers 6, and the retractable arm 10 of the joint cover support mechanism 5 retracts significantly into the support arm 9, thereby absorbing the shaking caused by the earthquake.

[0037] When the structural members 3 and 4 sway from side to side during an earthquake and the clearance section 2 widens, the floor joint device 1 of the present invention extends the telescopic link mechanism 7, as shown in Figure 9, reducing the overlap width of the joint cover bodies 14 of adjacent joint covers 6, and the support members 8 of the joint cover support mechanism 5 also extend, absorbing the shaking caused by the earthquake. Although not shown in the diagram, if the left and right structural bodies 3 and 4 sway in different longitudinal directions, the support member 8 and the telescopic link mechanism 7 rotate in the longitudinal direction to absorb the shaking caused by the earthquake.

[0038] [Different forms for carrying out the invention] Next, different embodiments for carrying out the present invention shown in Figures 10 to 19 will be described. In describing these different embodiments for carrying out the present invention, the same reference numerals are used for components identical to those in the first embodiment for carrying out the present invention, and redundant descriptions are omitted.

[0039] In the second embodiment for carrying out the present invention shown in Figures 10 to 14, the main difference from the first embodiment for carrying out the present invention is that the support member 8A is provided with an intermediate arm 18 between the support arm 9 and the telescopic arm 10. Even if the joint cover support mechanism 5A or floor joint device 1A using such a support member 8A is used, the same effects and advantages as in the first embodiment for carrying out the present invention can be obtained.

[0040] Specifically, the joint cover support mechanism 5A of this embodiment is composed of a plurality of support members 8A provided between one structural body and the other structural body, and the support member 8A comprises a rectangular tubular support arm 9 with one end attached to one structural body or the other structural body and the other end protruding toward the opposing structural body, an extendable arm 10 with one end attached to one structural body or the other structural body and the other end protruding toward the support arm 9, an intermediate arm 18 with one end inserted into the support arm 9 and the other end into which the extendable arm 10 is inserted, and a member extending in the left-right direction on the side surface of the support arm The structure consists of a guide rail 11 provided in the manner of the intermediate arm, an intermediate auxiliary support arm 19 with one end attached near one end of the intermediate arm and the other end supported by the guide rail 11, an intermediate guide rail 20 provided on the side of the intermediate arm 18 so as to extend in the left-right direction, and an auxiliary support arm 12 with one end attached near one end of the telescopic arm 10 and the other end supported by the intermediate guide rail 20, and the upper surface of the support arm 9 and the upper surfaces of the intermediate auxiliary support arm 19 and the auxiliary support arm 12 are formed to be the same or substantially the same plane.

[0041] As shown in Figure 14, an intermediate auxiliary support arm 19 and an intermediate guide rail 20 are provided on the front-rear side of the intermediate arm 18. The intermediate guide rail 20 is provided so as to protrude outward (forward or backward) from the intermediate auxiliary support arm 19, and is designed not to interfere with the intermediate arm when it enters the interior of the support arm 9. In addition, to prevent the intermediate arm 18 from falling off during an earthquake or the like, it is advisable to provide a stopper to prevent the intermediate arm 18 from falling off, or a link mechanism or coil spring (not shown) to adjust the position of the support arm 9, the intermediate arm 18 and the telescopic arm 10.

[0042] In the third embodiment for carrying out the present invention shown in Figures 15 to 19, the main difference from the first embodiment for carrying out the present invention is that a ceiling joint device 22 is formed by using a joint cover support mechanism 5 to support the ceiling joint cover 21 and close the clearance portion 2A of the ceiling.

[0043] This ceiling joint device 22 consists of a joint cover support mechanism 5 provided on one structural frame 3 and the other structural frame 4, a plurality of ceiling joint covers 21 supported by the joint cover support mechanism 5 and closing the clearance portion 2, and an expandable link mechanism 7 that adjusts the spacing between the plurality of ceiling joint covers 21. The joint cover support mechanism 5 uses the same configuration as that described in the first embodiment for carrying out the present invention, but the joint cover support mechanism 5A described in the second embodiment may also be used. The ceiling joint cover 21, supported by the joint cover support mechanism 5, consists of a mounting member 13A whose bottom is supported by the joint cover support mechanism 5, and a ceiling joint cover body 23 attached to the mounting member 13A.

[0044] The mounting member 13A consists of a first mounting member 15A whose bottom is supported by the joint cover support mechanism 5, and a second mounting member 17A which is provided below the support member 8 via a connecting member 24 to the first mounting member 15A, and to which the ceiling joint cover body 23 is fixed at the bottom. In other words, the first mounting member 15A is supported by the joint cover support mechanism 5, and the second mounting member 17A is supported in a suspended state by the first mounting member 15A via a connecting member 24.

[0045] The first mounting member 15A and the second mounting member 17A are substantially rectangular prism-shaped or substantially rectangular pipe-shaped members, and in this embodiment, they are connected by a round bar-shaped or pipe-shaped connecting member 24 that connects them at a predetermined interval.

[0046] This connecting member 24 is provided so as to pass through the pivot portion of the telescopic link mechanism 7, thereby adjusting the spacing of the ceiling joint covers 21. The ceiling joint cover body 23 is a plate-shaped member formed in a roughly crank shape in cross-section, with one end fixed to the bottom of the second mounting member 17A. The other end of this ceiling joint cover body 23 constantly overlaps with an adjacent ceiling joint cover body 23, allowing it to completely seal the clearance portion 2A without any gaps.

[0047] When the building structures 3 and 4 sway from side to side during an earthquake and the clearance section 2 narrows, the ceiling joint device 22 of the present invention, as shown in Figure 18, has a retractable link mechanism 7 that contracts, increasing the overlap width of the ceiling joint cover bodies 23 of adjacent ceiling joint covers 21, and the retractable arm 10 of the joint cover support mechanism 5 retracts significantly into the support arm 9, thereby absorbing the shaking caused by the earthquake.

[0048] When the building structures 3 and 4 sway from side to side during an earthquake and the clearance section 2 widens, the ceiling joint device 22 of the present invention extends the telescopic link mechanism 7, as shown in Figure 19, reducing the overlap width of the ceiling joint cover bodies 23 of adjacent ceiling joint covers 21, and the support members 8 of the joint cover support mechanism 5 also extend, absorbing the shaking caused by the earthquake. [Industrial applicability]

[0049] This invention is used in industries that manufacture floor jointing devices, ceiling jointing devices, and the like. [Explanation of symbols]

[0050] 1, 1A: Floor joint device, 2: Clearance section, 3: One structural frame, 4: The other structural frame, 5, 5A: Joint cover support mechanism, 6: Joint cover, 7: Telescopic link mechanism, 8, 8A: Support member, 9: Support arm, 10: Telescopic arm, 11: Guide rail, 12: Auxiliary support arm, 13, 13A: Mounting components, 14: Joint cover body, 15, 15A: First mounting member, 16: Spacer, 17, 17A: Second mounting member, 18: Intermediate arm, 19: Intermediate auxiliary support arm, 20: Intermediate guide rail, 21: Ceiling joint cover, 22: Ceiling joint device, 23: Ceiling joint cover body, 24: Connecting component.

Claims

1. A joint cover support mechanism for supporting a joint cover installed in a clearance between one structural body and another structural body, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural body and the other structural body, the support members comprising: a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body side; an extendable arm with one end attached to the one structural body or the other structural body and the other end inserted into the support arm so as to be movable in the left-right direction; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and an auxiliary support arm with one end attached near one end of the extendable arm and the other end supported by the guide rail, wherein the upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane.

2. The joint cover support mechanism according to claim 1, characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the guide rails.

3. A joint cover support mechanism for supporting a joint cover installed in a clearance between one structural frame and another structural frame, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural frame and the other structural frame, the support members comprising: a rectangular tubular support arm with one end attached to the one structural frame or the other structural frame and the other end protruding toward the opposing structural frame side; an extendable arm with one end attached to the one structural frame or the other structural frame and the other end protruding toward the support arm side; and an intermediate arm with one end inserted into the support arm and the other end into which the extendable arm is inserted. A joint cover support mechanism comprising: a guide rail provided on the side of the support arm so as to extend in the left-right direction; an intermediate auxiliary support arm with one end attached near one end of the intermediate arm and the other end supported by the guide rail; an intermediate guide rail provided on the side of the intermediate arm so as to extend in the left-right direction; and an auxiliary support arm with one end attached near one end of the telescopic arm and the other end supported by the intermediate guide rail, wherein the upper surface of the support arm, the upper surface of the intermediate auxiliary support arm and the auxiliary support arm are formed to be the same or substantially the same plane.

4. The joint cover support mechanism according to claim 3, characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, the intermediate auxiliary support arms are provided on the front-rear side surfaces of the intermediate arm and supported by the guide rails, and the intermediate guide rails are provided on the front-rear side surfaces of the intermediate arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and supported by the intermediate guide rails.

5. A floor joint device for sealing the clearance between one structural frame and another structural frame, comprising: a joint cover support mechanism provided on the one structural frame and the other structural frame; a plurality of joint covers supported by the joint cover support mechanism and sealing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural frame and the other structural frame, and one end of the support member is attached to either the one structural frame or the other structural frame, with the other end facing the opposite A floor joint device comprising: a rectangular tubular support arm protruding toward the building structure; an extendable arm with one end attached to one or the other building structure and the other end inserted into the support arm so as to be movable in the left-right direction; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and an auxiliary support arm with one end attached near one end of the extendable arm and the other end supported by the guide rail, wherein the upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane.

6. The floor joint device according to claim 5, characterized in that the guide rails are provided on the front-rear side surfaces of the support arm, and the auxiliary support arms are provided on the front-rear side surfaces of the telescopic arm and are supported by the guide rails.

7. A floor joint device for closing the clearance between one structural frame and another structural frame, comprising: a joint cover support mechanism provided on the one structural frame and the other structural frame; a plurality of joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural frame and the other structural frame, the support member comprising: a rectangular tubular support arm with one end attached to the one structural frame or the other structural frame and the other end protruding toward the opposing structural frame side; and an expandable link mechanism with one end attached to the one structural frame or the other structural frame and the other end protruding toward the support arm side A floor joint device comprising: a support arm; an intermediate arm with one end inserted into the support arm and the other end into which the telescopic arm is inserted; a guide rail provided on the side of the support arm so as to extend in the left-right direction; an intermediate auxiliary support arm with one end attached near one end of the intermediate arm and the other end supported by the guide rail; an intermediate guide rail provided on the side of the intermediate arm so as to extend in the left-right direction; and an auxiliary support arm with one end attached near one end of the telescopic arm and the other end supported by the intermediate guide rail, wherein the upper surface of the support arm, the upper surface of the intermediate auxiliary support arm and the auxiliary support arm are formed to be the same or substantially the same plane.

8. The floor joint device according to claim 7, characterized in that the guide rails are provided on the front-rear sides of the support arm, the intermediate auxiliary support arms are provided on the front-rear sides of the intermediate arm and supported by the guide rails, and the intermediate guide rails are provided on the front-rear sides of the intermediate arm, and the auxiliary support arms are provided on the front-rear sides of the telescopic arm and supported by the intermediate guide rails.

9. The floor joint device according to any one of claims 5 to 8, wherein the joint cover comprises an attachment member whose bottom is supported by the joint cover support mechanism and a joint cover body attached to the attachment member, the attachment member comprises a first attachment member whose bottom is supported by the joint cover support mechanism and a second attachment member provided above the first attachment member via a spacer and to which the joint cover body is fixed, and the expandable link mechanism is provided in the gap between the first attachment member and the second attachment member.

10. A ceiling joint device for closing the clearance between one structural frame and another structural frame, comprising: a joint cover support mechanism provided on the one structural frame and the other structural frame; a plurality of ceiling joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of ceiling joint covers. The joint cover support mechanism is composed of a plurality of support members provided between one structural body and the other structural body, and the support members are composed of a rectangular tubular support arm with one end attached to the one structural body or the other structural body and the other end protruding toward the opposing structural body, an extendable arm with one end attached to the one structural body or the other structural body and the other end inserted into the support arm so as to be movable in the left-right direction, a guide rail provided on the side of the support arm so as to extend in the left-right direction, and an auxiliary support arm with one end attached near one end of the extendable arm and the other end supported by the guide rail, and the upper surface of the support arm and the upper surface of the auxiliary support arm are formed to be the same or substantially the same plane. The ceiling joint cover comprises a mounting member whose bottom is supported by the joint cover support mechanism, and a ceiling joint cover body attached to the mounting member, wherein the mounting member comprises a first mounting member whose bottom is supported by the joint cover support mechanism, and a second mounting member provided below the support member via a connecting member to the first mounting member, and to which the ceiling joint cover body is fixed, and the connecting member is provided so as to penetrate the pivot portion of the telescopic link mechanism.

11. The ceiling joint device according to claim 10, characterized in that the guide rails are provided on the front-rear sides of the support arm, and the auxiliary support arms are provided on the front-rear sides of the telescopic arm and are supported by the guide rails, respectively.

12. A ceiling joint device for closing the clearance between one structural frame and the other structural frame, comprising: a joint cover support mechanism provided on the one structural frame and the other structural frame; a plurality of ceiling joint covers supported by the joint cover support mechanism and closing the clearance; and an expandable link mechanism for adjusting the spacing between the plurality of ceiling joint covers, wherein the joint cover support mechanism is composed of a plurality of support members provided between the one structural frame and the other structural frame, and the support members are, A rectangular tubular support arm, one end of which is attached to one of the structures or the other, with the other end protruding toward the opposing structure; a telescopic arm, one end of which is attached to one of the structures or the other, with the other end protruding toward the support arm; an intermediate arm, one end of which is inserted into the support arm, with the other end into which the telescopic arm is inserted; a guide rail provided on the side of the support arm so as to extend in the left-right direction; and one end attached near one end of the intermediate arm. The ceiling joint device comprises an intermediate auxiliary support arm attached to the other end, with the other end supported by the guide rail; an intermediate guide rail provided on the side of the intermediate arm so as to extend in the left-right direction; and an auxiliary support arm, one end of which is attached near one end of the telescopic arm and the other end supported by the intermediate guide rail, wherein the upper surface of the support arm, the upper surface of the intermediate auxiliary support arm and the auxiliary support arm are formed to be the same or substantially the same plane; the ceiling joint cover comprises a mounting member whose bottom is supported by the joint cover support mechanism and a ceiling joint cover body attached to the mounting member, wherein the mounting member comprises a first mounting member whose bottom is supported by the joint cover support mechanism and a second mounting member provided below the support member via a connecting member to the first mounting member and to which the ceiling joint cover body is fixed, wherein the connecting member is provided so as to penetrate the pivot of the telescopic link mechanism.

13. The ceiling joint device according to claim 12, characterized in that the guide rails are provided on the front-rear sides of the support arm, the intermediate auxiliary support arms are provided on the front-rear sides of the intermediate arm and supported by the guide rails, and the intermediate guide rails are provided on the front-rear sides of the intermediate arm, and the auxiliary support arms are provided on the front-rear sides of the telescopic arm and supported by the intermediate guide rails.

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