Ceiling joint device

Abstract

To provide a ceiling joint device that can prevent scratches, etc., on the bottom surface of movable joint plates and absorb swaying movements caused by earthquakes.SOLUTION: A ceiling joint device that seals the joint portion of the ceiling between one and the other structural members is composed of a movable joint plate having one end attached to one of the structural members so that it can be displaced in the vertical direction and the other end being movable in the vertical direction; movable joint plate holding means that prevents the other end of the movable joint plate from being displaced below the horizontal position; a fixed joint plate having one end fixedly attached to the other structural member and the other end arranged so that it approximately abuts the other end of the movable joint plate; a push-up inclined surface formed on the other end of the fixed joint plate that pushes the other end of the movable joint plate upward in the event of an earthquake; a sliding inclined surface that is gentler than the push-up inclined surface; and a receiving member that is provided at the connection between the push-up inclined surface and the sliding inclined surface and can receive the bottom of the movable joint plate so that it is not damaged.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ceiling joint device for use in a case where a ceiling is provided between left and right frameworks provided with a joint portion therebetween. [Background technology]

[0002] A known example of a ceiling joint device that closes a joint between ceilings is a ceiling joint device that closes a joint in a ceiling portion between one and the other of the structural members, which comprises: a movable joint plate whose mounting base end is attached to the one of the structural members via a mounting member, and whose protruding end has an inclined surface formed thereon, and which can be displaced in the vertical direction; a fixed joint plate whose protruding end opposite the inclined surface is fixedly attached to the other of the structural members so that it substantially abuts against the protruding end of the movable joint plate, and which has a movable joint plate slide part whose upper surface is inclined in part or in its entirety; and a movable joint plate holding means that prevents the protruding end of the movable joint plate from being displaced downward from a horizontal state, and a rolling member is provided on the bottom surface near the protruding end of the movable joint plate, and a push-up inclined surface that is steeper than the movable joint plate slide part is provided on the protruding end of the fixed joint plate (Patent Document 1).

[0003] However, in this type of ceiling joint device, although a rolling member is provided on the protruding end of the movable joint plate, if the amplitude of the shaking caused by an earthquake becomes large, the bottom surface of the movable joint plate will rub against the corner between the movable joint plate slide portion and the push-up inclined surface, which could result in damage to the bottom surface of the joint cover. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6417450 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above-mentioned conventional drawbacks, the present invention aims to provide a ceiling joint device that can prevent scratches or the like from occurring on the bottom surface of the movable joint plate and can absorb shaking caused by earthquakes.

[0006] The above and other objects and novel features of the present invention will become more fully apparent from the following description taken in conjunction with the accompanying drawings.

[0007] However, the drawings are for illustrative purposes only and are not intended to limit the technical scope of the present invention. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the ceiling joint device of the present invention described in claim 1 is a ceiling joint device that closes a joint portion of a ceiling between one structure and the other structure, and is characterized in that it is composed of a movable joint plate having one end attached to the one structure so that it can be displaced in the vertical direction and the other end being displaceable in the vertical direction, a fixed joint plate having one end fixedly attached to the other structure and the other end arranged so that it approximately abuts the other end of the movable joint plate, a movable joint plate holding means that prevents the other end of the movable joint plate from being displaced downward from the horizontal state, a push-up inclined surface formed on the other end of the fixed joint plate that pushes the other end of the movable joint plate upward during an earthquake, and a slide inclined surface that is continuous with the push-up inclined surface and has a gentler slope than the push-up inclined surface, and a receiving member that is provided at the connection between the push-up inclined surface and the slide inclined surface and can receive the bottom of the movable joint plate so that it is not damaged.

[0009] The ceiling joint device according to claim 2 is characterized in that a rolling member is further provided on a bottom surface near the other end of the movable joint plate.

[0010] The ceiling joint device described in claim 3 is characterized in that a cover plate is provided on the bottom surface near the other end of the fixed joint plate, which protrudes toward the movable joint plate and covers the bottom of the other end side of the movable joint plate under normal conditions. Effect of the Invention

[0011] As is clear from the above description, the present invention provides the following effects. (1) In the invention described in claim 1, a support member is provided at the connection between the push-up inclined surface and the slide inclined surface, and can support the bottom of the movable joint plate so that it is not damaged. Therefore, even if the left and right structures shake significantly during an earthquake and the joint portion becomes narrower, the support member supports the bottom of the movable joint plate, so that the bottom portion of the movable joint plate can be reliably prevented from being damaged. (2) The invention described in claim 2 also has the same effect as (1) above, and further includes a rolling member on the bottom surface near the other end of the movable joint plate. This prevents the tip of the movable joint plate from coming into direct contact with the push-up inclined surface at the initial motion of an earthquake, thereby reliably preventing the tip of the movable joint plate from being damaged. (3) The invention described in claim 3 can obtain the same effects as those of (1) and (2) above, and can also hide the rolling members and the like, improving the aesthetic appearance of the ceiling portion. [Brief description of the drawings]

[0012] 1 to 9 are explanatory diagrams showing a first embodiment of the present invention. 10 to 12 are explanatory diagrams showing a second embodiment of the present invention. [Figure 1] 1 is a plan view of a ceiling joint device according to a first embodiment. [Diagram 2] FIG. [Diagram 3] Cross-sectional view taken along line 3-3 in Figure 1. [Figure 4] FIG. 4 is an explanatory diagram of a mounting member attached to one of the main bodies. [Diagram 5] FIG. [Figure 6] An explanatory diagram of a fixed joint plate. [Figure 7] An explanatory diagram of operation when the joint has narrowed slightly due to an earthquake. [Figure 8] An explanatory diagram of operation when the joint has narrowed due to an earthquake. [Figure 9] An explanatory diagram of operation when the joint has widened due to an earthquake. [Figure 10] FIG. 5 is a plan view of a ceiling joint device according to a second embodiment. [Figure 11] Cross-sectional view taken along line 11-11 in Figure 10. [Figure 12] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The present invention will be described in detail below with reference to the embodiments shown in the drawings. In this specification, the left-right direction, the front (lower in the drawing) and the rear (upper in the drawing) directions are based on Fig. 1. Also, the top (upper in the drawing) and bottom (lower in the drawing) directions are based on Fig. 3.

[0014] In addition, in the present invention, the term "structure" refers to a structure such as a building, road, slab, elevator shaft, etc. in which a joint plate can be installed, and the term "entrance / exit" refers not only to an entrance / exit with a door or gate, but also to a passageway through which people, vehicles, etc. can pass.

[0015] In the first form for carrying out the present invention shown in Figures 1 to 9, reference numeral 1 denotes a ceiling joint device installed between one and the other structural members 3 and 4 provided via a joint portion 2 in the ceiling portion.

[0016] As shown in Figures 1 to 3, for example, the ceiling joint device 1 comprises a movable joint plate 5 having one end (mounting base end) 5a attached to a wall surface 3a of one of the frameworks 3 via an attachment member 6 so as to be displaceable in the vertical direction or in the tilting direction, and the other end (protruding end) 5b opposite the one end is formed with an inclined surface 7 having an obtuse angle at the bottom side, such that the other end 5b can be displaced in the vertical direction greater than the one end 5a during an earthquake, and a ceiling joint device 5 having one end (mounting base end) 8a fixedly attached to a wall surface 4a of the other framework 4, and the other end (protruding end) 8b opposite the one end is disposed in a position facing the inclined surface 7. the movable joint plate 5 being supported by a fixed joint plate 8 which approximately abuts against the other end 5b of the movable joint plate 5; a movable joint plate holding means 9 which prevents the other end 5b of the movable joint plate 5 from being displaced downward from the horizontal state; a push-up inclined surface 10 which is formed on the other end 8b of the fixed joint plate 8 and which pushes the other end 5b of the movable joint plate 5 upward during an earthquake; a slide inclined surface 11 which is formed continuous with the push-up inclined surface 10 and has a gentler slope than the push-up inclined surface 10; and one or more support members 12 in an approximately horizontal direction which are provided at the connection between the push-up inclined surface 10 and the slide inclined surface 11 and which can support the bottom of the movable joint plate without damaging it.

[0017] Note that "approximately abutting" refers to a state in which the two are in exact contact with each other, or a state in which there is a gap of about several centimeters depending on the mounting method.

[0018] 5, in this embodiment, the movable joint plate 5 is composed of a movable joint plate main body 13 in which the inside of the frame is formed in a lattice shape, and a decorative plate 14 provided integrally on the bottom surface of the movable joint plate main body 13. One end 5a side of this movable joint plate 5 is attached to one of the frames 3 via a mounting member 6 fixed to the wall surface 3a of one of the frames 3, and one end side of the movable joint plate main body 13 is formed with pin insertion holes 16 in the left-right elongated shape into which the mounting pins 15 of the mounting member 6 are inserted.

[0019] As shown in Fig. 5, in this embodiment, the mounting member 6 is composed of an angle-shaped mounting bracket 17 and a plurality of mounting pins 15 provided on the mounting bracket 17 at a predetermined interval in the front-rear direction. The mounting bracket 17 has a vertical portion 17a and a horizontal portion 17b, and the vertical portion 17a is fixed to the wall surface 3a of one of the frames by bolts, screws, etc., and the mounting pins 15 are provided on the horizontal portion 17b so as to be substantially perpendicular to each other at a predetermined interval in the front-rear direction. It is preferable to provide a stopper or the like at the upper end of the mounting pin 15 to prevent the movable joint plate 5 from falling off.

[0020] Therefore, since the pin insertion holes 16 are formed at positions corresponding to the mounting pins 15, by inserting the mounting pins 15 into these pin insertion holes 16 and attaching them to one of the bodies 3, the entire movable joint plate 5 can be displaced in the vertical direction, and by using the pin insertion holes 16 which are elongated in the horizontal direction, the entire movable joint plate 5 can be displaced upward at an angle (for example, upward to the right in Figures 7 and 8).

[0021] In addition, an inclined surface 7 is formed at the other end 5b of the movable joint plate 5, with the corner on the bottom side being an obtuse angle, and a roller as a rolling member 18 is provided at this obtuse angle corner (the bottom near the other end of the movable joint plate 5).

[0022] By providing such a rolling member 18, when the joint portion 2 narrows due to shaking caused by an earthquake and the movable joint plate 5 rises, the movable joint plate 5 can rise without coming into contact with the fixed joint plate 8.

[0023] The rolling members 18 are provided so as to protrude slightly downward from the bottom surface of the movable joint plate 5. In this embodiment, the inclined surface 7 is formed on the other end 5b of the movable joint plate 5, and the rolling members 18 are provided, but the inclined surface 7 and the rolling members 18 do not necessarily have to be provided, and only one of them may be provided.

[0024] Under normal circumstances, the movable joint plate 5 is supported near one end of the movable joint plate main body 13 by the horizontal portion 17b of the mounting bracket 17, and its tip side is supported by the movable joint plate holding means 9, so that it is held in an approximately horizontal position.

[0025] In this embodiment, the movable joint plate holding means 9 is composed of a plurality of arm members 19 provided on one of the bodies 3 above the movable joint plate 5, and a hanging device 20 such as a wire or chain having one end fixed to the arm members 19 and the other end fixed to the upper surface of the movable joint plate 5 (movable joint plate main body 13).

[0026] The hanging tool 20 is formed to a length that allows the movable joint plate 5 to be in a substantially horizontal state. In this embodiment, the hanging tool 20 is fixed to the movable joint plate 5 via the arm member 19, but one end of the hanging tool 20 may be fixed to the wall surface of one of the frames without using the arm member 19 to serve as the movable joint plate holding means 9.

[0027] The fixing position of the hanging device 20 may be any position where the movable joint plate 5 can be maintained in a substantially horizontal state, and may be attached near the tip end.

[0028] A fixed joint plate 8 is fixedly attached to the wall surface 4a of the other body 4 by, for example, a bracket or the like (not shown).

[0029] 6, the fixed joint plate 8 is formed in a rectangular plate shape in this embodiment, and the other end 8b is fixed to the wall surface 4a of the other body 4. The bottom surface of the fixed joint plate 8 is substantially horizontal, and a decorative plate 14 is provided thereon, and the bottom surface of the fixed joint plate 8 is attached so as to be substantially flush with the bottom surface of the movable joint plate 5.

[0030] The decorative plate 14 may be in the form of a plate, or may be in the form of a sheet attached to the bottom surface of the movable joint plate 5 or the fixed joint plate 8.

[0031] At the other end of the fixed joint plate 8, a push-up inclined surface 10 is formed which pushes up the other end 5b of the movable joint plate 5 during an earthquake, and a slide inclined surface 11 is formed so as to be continuous with this push-up inclined surface 10.

[0032] In this embodiment, the push-up inclined surface 10 is formed at an angle of about 45 degrees, and its length in the left-right direction is about ¼ the length of the slide inclined surface 11.

[0033] The slide inclined surface 11 is formed on the upper surface of the fixed joint plate 8 so as to be continuous with the push-up inclined surface 10, and in this embodiment is formed at an angle of about 5 degrees to 20 degrees.

[0034] At the connection (corner) between the push-up inclined surface 10 and the slide inclined surface 11, a receiving member 12 capable of receiving the bottom of the movable joint plate 5 without damaging it is provided in a substantially horizontal state. In this embodiment, the receiving member 12 is a round bar or pipe-shaped roller member, and is formed so as to protrude upward by about several millimeters from the corner of the push-up inclined surface 10 and the slide inclined surface 11.

[0035] In this embodiment, a roller member is used as the receiving member 12, but any member that can support the movable joint plate 5 without damaging its bottom even when it slides, such as a rolling member such as a roller, a sliding member or a bearing, may be used.

[0036] In this embodiment, a cover plate 21 is provided at the bottom near the other end 8b of the fixed joint plate 8, which protrudes toward the movable joint plate 5 and covers the bottom of the other end side of the movable joint plate 5 under normal conditions. The cover plate 21 is a plate-shaped member fixed to the tip of the fixed joint plate 8, and the portion protruding toward the movable joint plate 5 supports the other end 5b of the movable joint plate 5 and covers the approximate contact portion between the movable joint plate 5 and the fixed joint plate 8.

[0037] Incidentally, lighting fixtures such as recessed downlights can also be provided on the fixed joint plate 8. Such downlights can be provided by folding down the steeply inclined push-up inclined surface 10 to the low-gradient slide inclined surface 11 midway.

[0038] If an earthquake causes the joint section 2 between the left and right bodies 3 and 4 to shake and become slightly narrower, as shown in Figure 7, the other end (rolling member 18) of the movable joint plate 5 is pushed up by the pushing-up inclined surface 10 of the fixed joint plate 8, and the movable joint plate 5 becomes inclined.

[0039] When the joint 2 between the left and right frameworks 3, 4 becomes narrower, the rolling members 18 slide in the left-right direction on the sliding inclined surfaces 11 that are continuous with the pushing-up inclined surfaces 10, as shown in FIG.

[0040] At this time, if the shaking caused by the earthquake is large, the other end of the movable joint plate 5 moves significantly toward the other structure, causing the other end of the movable joint plate 5 to rotate downward like a seesaw with the receiving member 12 as a fulcrum, and the other end side of the movable joint plate 5 is displaced downward so that it becomes closer to horizontal.

[0041] Even in such a case, a receiving member 12 is provided at the connection (corner) between the push-up inclined surface 10 and the slide inclined surface 11, so that this receiving member 12 supports the bottom surface of the movable joint plate 5, thereby reliably preventing the bottom of the movable joint plate 5 from being damaged.

[0042] When an earthquake causes the joint 2 between the left and right bodies 3, 4 to shake and widen, the movable joint plate 5 and the fixed joint plate 8 move apart, as shown in Figure 9, to absorb the shaking caused by the earthquake.

[0043] Since the movable joint plate 5 is supported by the hanging device 20, it can slide left and right while maintaining a horizontal position without rotating downward from the horizontal position. [Different modes for carrying out the invention] Next, different embodiments for carrying out the present invention will be described with reference to Figures 10 to 12. In describing these different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention will be designated by the same reference numerals, and duplicated descriptions will be omitted.

[0044] In the second form for carrying out the present invention shown in Figures 10 to 12, the main difference from the first form for carrying out the present invention is that a movable joint plate 5A is used in which a decorative panel 14 is fixed to the bottom of a plate-shaped movable joint plate main body 13A that does not have an inclined surface on the other end side, and even with such a ceiling joint device 1A, the same effect as the second form for carrying out the present invention can be obtained. In the embodiment of the present invention, the cover plate, rolling members, decorative plate, etc. are provided, but these may not be provided. [Industrial Applicability]

[0045] The present invention finds application in the ceiling joint device manufacturing industry. [Explanation of symbols]

[0046] 1, 1A: ceiling joint device, 2: joint part, 3: One body, 4: The other body 5, 5A: Movable joint plate, 6: Mounting member, 7: Inclined surface; 8: Fixed joint plate; 9: Movable joint plate holding means; 10: Push-up inclined surface; 11: slide inclined surface; 12: receiving member; 13, 13A: Movable joint plate body, 14: Decorative plate, 15: mounting pin; 16: pin insertion hole; 17: mounting bracket; 18: rolling member; 19: arm member; 20: hanging device; 21: Cover plate.

Claims

1. A ceiling joint device that closes a joint in a ceiling portion between one frame and another frame, a movable joint plate having one end fixedly attached to one of the structural members so that its position can be displaced in the vertical direction and the other end being movable in the vertical direction; a fixed joint plate having one end fixedly attached to the other structural member and the other end arranged so that it approximately abuts the other end of the movable joint plate; a movable joint plate holding means for preventing the other end of the movable joint plate from being displaced below the horizontal position; a push-up inclined surface formed at the other end of the fixed joint plate for pushing the other end of the movable joint plate upward during an earthquake, and a slide inclined surface that is continuous with the push-up inclined surface and has a gentler slope than the push-up inclined surface; and a receiving member provided at the connection between the push-up inclined surface and the slide inclined surface and capable of receiving the bottom of the movable joint plate so as not to be damaged.

2. 2. The ceiling joint device according to claim 1, further comprising a rolling member provided near the other end of the movable joint plate.

3. A ceiling joint device as described in either claim 1 or claim 2, characterized in that a cover plate is provided near the other end of the fixed joint plate, protruding toward the movable joint plate and covering the bottom of the other end side of the movable joint plate under normal conditions.

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