Joint device for ceiling

Abstract

To provide a joint device for a ceiling capable of preventing a flaw or the like from occurring on a bottom surface of one joint plate and absorbing shaking movement due to an earthquake.SOLUTION: A joint device 1 for a ceiling comprises: one joint plate 6 whose one end is rotatably attached to one skeleton 3 via a rotary shaft 5; a rolling member or a sliding member 7 which is provided on a bottom part in the other end side of the one joint plate so as to project downward; the other joint plate 8 which has one end portion attached to the other skeleton 4 and has the other end portion substantially abutting on the other end portion of the one joint plate; one joint plate holding means 9 which prevents the other end portion of the one joint plate from being displaced downward from a horizontal state; and a slide inclined surface which is formed on the other joint plate and on which the other end of the one joint plate slides during an earthquake.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ceiling joint device for use when a ceiling is installed between left and right frames provided with a joint portion therebetween. [Background technology]

[0002] A known example of a ceiling joint device for sealing joints between ceilings is a ceiling joint device that "seals joints in a ceiling portion between one and the other frame, comprising: one joint plate whose mounting base end is attached to the one frame via a mounting member, and whose protruding end has an inclined surface that can be displaced up and down; another joint plate whose protruding end opposite the inclined surface is fixedly attached to the other frame so that it substantially abuts against the protruding end of the one joint plate, and which has a one joint plate slide portion whose upper surface is inclined in part or in its entirety; and one joint plate holding means that prevents the protruding end of the one joint plate from being displaced downward from a horizontal position; a rolling member is provided on the bottom surface near the protruding end of the one joint plate; and a push-up inclined surface that is steeper than the one joint plate slide portion on the protruding end of the other joint plate" (Patent Document 1).

[0003] However, with such a ceiling joint device, if there is not much space above the ceiling joint device, it is difficult to install a slab or the like to suspend the tip of one of the joint plates, making it difficult to hold one of the joint plates.

[0004] Furthermore, even if a rolling member is provided at the protruding end of one of the joint plates, if there is not much space above the ceiling joint device, the inclination of the other joint plate must be made gentler, and if the amplitude of shaking caused by an earthquake becomes large, the bottom surface of one of the joint plates may rub against the corner between the sliding portion of one of the joint plates and the push-up inclined surface, which could damage the bottom surface of the joint cover. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6417450 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above-mentioned drawbacks of the conventional method, the present invention aims to provide a ceiling joint device that can prevent scratches or the like from occurring on the bottom surface of one of the joint plates and can absorb shaking caused by earthquakes.

[0007] The above and other objects and novel features of the present invention will become more fully apparent from the following description read in conjunction with the accompanying drawings. However, the drawings are for illustrative purposes only and do not limit the technical scope of the present invention. [Means for solving the problem]

[0008] In order to achieve the above object, the ceiling joint device of the present invention as set forth in claim 1 is a ceiling joint device for closing a joint portion of a ceiling portion between one skeleton and another skeleton, and comprises: one joint plate rotatably attached at one end to the one skeleton via a rotary shaft; a rolling member or sliding member provided so as to protrude downward from the bottom of the other end side of the one joint plate; another joint plate having one end attached to the other skeleton and the other end provided so as to be in approximate contact with the other end of the one joint plate; The joint plate is characterized in that it is composed of one joint plate holding means that prevents the other end of the one joint plate from being displaced, and a sliding inclined surface formed on the other joint plate along which the other end of the one joint plate slides during an earthquake, and the one joint plate holding means is composed of an engaging member that is provided on one end side of the one joint plate so that at least the upper end is separated from the vertical wall surface of the one main body, and a stopper that is fixed to the one main body and abuts against the engaging member to prevent the other end of the one joint plate from rotating downward below approximately horizontal.

[0009] The ceiling joint device described in claim 2 is characterized in that the bottom of the other end side of one of the joint plates is further provided with a downward groove-shaped recess extending in the front-to-rear direction, near the rolling member or sliding member, and closer to the one of the body structures than the rolling member or sliding member.

[0010] The other joint plate of the ceiling joint device according to claim 3 is characterized in that one end side thereof is attached to the other frame via a slide support mechanism so as to be slidable in the front-rear direction. [Effects 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, one joint plate is attached via a pivot shaft, and one joint plate holding means is configured to have an engaging member and a stopper that is fixed to the one body and abuts against the engaging member to prevent the other end of the one joint plate from rotating downward below approximately horizontal.Therefore, one joint plate can be attached in a horizontal position even in a location where space cannot be secured above. (2) Since a rolling member or a sliding member is provided at the bottom of the other end of one of the joint plates, it is possible to reliably prevent the bottom surface of one of the joint plates from being damaged. (3) The invention described in claim 2 also achieves the same effects as those of (1) to (2) above, and by providing a box-shaped recess, it is possible to reliably prevent the tip of one of the joint plates from being damaged. (4) The invention described in claim 3 also achieves the same effects as (1) to (3) above, and since the other joint plate is attached so as to be able to slide in the forward and backward directions via a slide support mechanism, even if the left and right bodies sway in the forward and backward directions due to an earthquake, the shaking caused by the earthquake can be absorbed more smoothly. [Brief explanation of the drawings]

[0012] 1 to 9 are explanatory diagrams showing a first embodiment of the present invention. 10 and 11 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. [Figure 2] FIG. [Figure 3] Cross-sectional view taken along line 3-3 in Figure 1. [Figure 4] An explanatory diagram of one of the joint plates. [Figure 5] FIG. [Figure 6] An explanatory diagram of the other joint plate. [Figure 7] Explanatory diagram of slide support mechanism [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. 4 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. DETAILED DESCRIPTION OF THE INVENTION

[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, front (upper in the drawing) and rear (lower in the drawing) directions are based on Fig. 1. The top (upper in the drawing) and bottom (lower in the drawing) directions are based on Fig. 3.

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

[0015] In the first embodiment of the present invention shown in Figures 1 to 9, 1 is a ceiling joint device installed between one and the other of the frames 3 and 4 via a joint portion 2 in the ceiling portion.

[0016] As shown in Figures 1 to 3, the ceiling joint device 1 is composed of one joint plate 6 rotatably attached at one end to one of the frames 3 via a pivot shaft 5, a rolling or sliding member 7 provided so as to protrude downward from the bottom of the other end of the one joint plate 6, another joint plate 8 having one end attached to the other frame 4 and the other end provided so as to approximately abut the other end of the one joint plate, one joint plate holding means 9 for preventing the other end of the one joint plate 6 from being displaced downward from the horizontal position, and a sliding inclined surface 10 formed on the other joint plate 8 along which the other end of the one joint plate slides during an earthquake.

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

[0018] As shown in Figure 4, one end of one joint plate 6 is attached to the wall surface 3a of one of the skeletons 3 via a pivot shaft 5, and the other end is capable of rotating up and down, and a plurality of bar-shaped engaging members 11 constituting one of the joint plate holding means 9 are fixed at required intervals to the upper surface of one end of one of the joint plates 6. In this embodiment, a pin-shaped pivot shaft 5 is inserted into the bar-shaped engaging member 11, and this pivot shaft 5 is fixed to the wall surface 3a of one of the skeletons 3. In other words, one of the joint plates 6 is pivotally attached to one of the skeletons 3 via the engaging member 11 fixed to one end of the one of the joint plates 6.

[0019] In this embodiment, the pin-shaped pivot shaft 5 is fixed to one of the bodies 3, and one of the joint plates 6 is attached to one of the bodies, but the pivot shaft 5 may be inserted into one end of one of the joint plates 6 and fixed thereto, or a hinge member may be used as the pivot shaft, and one end of one of the joint plates 6 may be attached to the wall surface of one of the bodies 3 using the hinge member.

[0020] Furthermore, if there is a gap between one end of one joint plate 6 and the wall surface 3a of one of the frames 3, a sealing material may be attached to seal this gap.

[0021] A rolling or sliding member 7 that moves on a gentle sliding slope 10 during an earthquake is provided at the bottom of the other end of one of the joint plates 6, as shown in Figure 3, for example. Rollers, bearings, sliding materials, etc. are appropriately used as this rolling or sliding member 7, and in this embodiment, rollers are provided. The lower end of this rolling or sliding member 7 is provided so as to be approximately flush with the bottom surface of one of the joint plates 6 or to be located lower than the bottom surface of one of the joint plates 6.

[0022] A downward U-shaped recess (downward groove) 12 (box joint portion) extending in the front-to-rear direction is formed in the bottom portion of the other end side of one joint plate 6, near the rolling or sliding member 7, at a position closer to one of the frames 3 than the rolling or sliding member 7. By providing such a recess 12, it is possible to reliably prevent the bottom portion near the other end of one joint plate 6 from coming into contact with the slide inclined surface 10 during an earthquake.

[0023] As shown in Figure 6, in this embodiment, the other joint plate 8 is formed in a generally rectangular plate shape when viewed from above and a generally right-angled triangle shape when viewed from the front, and its other end 8b is attached to the wall surface 4a of the other body 4 via a slide support mechanism 13 so as to be able to slide in the front-to-rear direction. Its bottom surface is attached in a generally horizontal position so as to be generally flush with the bottom surface of one joint plate 6. Note that a decorative panel may be provided on the bottom surface of one joint plate 6 and the bottom surface of the other joint plate 8. Note that a plate-shaped decorative panel may be used as the decorative panel, or a sheet-shaped one may be attached to the bottom surface of one joint plate 6 or the other joint plate 8.

[0024] On the upper surface of the other joint plate 8, a slide inclined surface 10 is formed along which the rolling or sliding member 7 of the one joint plate 6 slides during an earthquake.

[0025] The slide support mechanism 13 is composed of a guide rail 14 fixed to the wall surface 4a on the joint side of the other body 4, a slide rail 16 that is slidable in the forward and backward directions on the guide rail 14 via a plurality of rollers 15 and whose side serves as a joint plate mounting portion 16a, and an abutment member 17 that abuts against the slide rail 16 to prevent it from moving toward the one body 3 through engagement between the guide rail and the slide rail 16 (direct or indirect engagement structure).

[0026] The guide rail 14 is a rail-like member formed with a roughly U-shaped cross section and fixed to the wall surface 4a on the joint side of the other frame 4, and is provided so as to extend in the front-to-rear direction (the up-and-down direction in FIG. 1). The upper part of this guide rail 14 is provided with a roller 15 and an abutment member 17. The roller 15 may be any member capable of supporting the slide rail 16 so as to allow it to slide smoothly in the front-to-rear direction, and may be a bearing or a sliding member. The abutment member 17 may also be any member capable of abutting the slide rail 16 so as to prevent it from moving toward the one frame 3, and supporting the slide rail 16 so as to allow it to slide smoothly in the front-to-rear direction; in this embodiment, a roller that rotates laterally is used.

[0027] The slide rail 16 is a rail-like member that is formed in a roughly downward U-shape in cross section and has a roughly crank-shaped lower end, and is arranged to extend in the front-to-rear direction (up-and-down direction in Figure 1) with the roughly downward U-shaped portion of the upper end supported by the rollers 15 of the guide rail 14.

[0028] Further, the contact member 17 contacts the side of the portion of the upper end that is roughly U-shaped in cross section facing downwards and the side of the portion of the lower end that is roughly crank-shaped.

[0029] The length of the slide rail 16 in the front-to-rear direction may be approximately the same as that of the guide rail 14, but it need only be long enough to support the other joint plate 8. In this case, it is desirable that the length of the guide rail 14 be longer than that of the slide rail 16 by at least the amount of swinging movement of the other joint plate 8 in the front-to-rear direction during an earthquake.

[0030] One of the joint plate holding means 9 is composed of an engaging member 11 arranged to protrude diagonally upward from one end side of the one of the joint plates 6, and a stopper 18 fixed to the wall surface 3a of the one of the main bodies 3 and abutting against the engaging member 11 in an approximately surface contact state, thereby preventing the other end of the one of the joint plates 6 from rotating downward below approximately horizontal.

[0031] This engaging member 11 is provided on one end side of one joint plate 6 so that at least its upper end is separated from the vertical wall surface 3a of one of the skeletons 3. As long as the upper end of this engaging member 11 is separated from the vertical wall surface 3a of one of the skeletons 3, its shape and structure, such as being vertical, inclined, or stepped, are not particularly important, but in this embodiment, it is fixed to the upper surface of one of the joint plates 6 near one end so as to protrude diagonally upward with a square bar or square pipe-shaped member.

[0032] The stopper 18 is a bracket-like member that is approximately hat-shaped in a plan view, into which the engaging member 11 is inserted and which abuts against the engaging member 11 in a state of approximately surface contact.When abutting against the engaging member 11, the one joint plate 6 becomes approximately horizontal, and the other end of the one joint plate 6 does not rotate further downward.

[0033] Furthermore, when the other end of one joint plate 6 rotates upward during an earthquake, the shape is formed so as not to hinder the rotation of the one joint plate 6.

[0034] By using such one joint plate holding means 9, one joint plate 6 can be reliably held even in a place where there is not much space available above.

[0035] In addition, it is desirable to provide a cover plate 19 on the bottom surface near the other end of the other joint plate 8, which protrudes toward one of the joint plates 6 and covers the bottom of the other end side of the one of the joint plates 6 under normal conditions.

[0036] This cover plate 19 is a thin plate-like member made of a material with the same texture as the bottom surfaces and decorative panels of the joint plates 6 and 8, and is preferably long enough so that the recess 12 in one of the joint plates 6 is not visible.

[0037] When an earthquake causes the joint section 2 between the left and right bodies 3 and 4 to shake and narrow, as shown in Figure 7, the sliding member 7 at the other end of one joint plate 6 slides left and right along the upper surface of the sliding inclined surface 10 of the other joint plate 8.

[0038] At this time, since the recess 12 is formed in the bottom near the other end of one of the joint plates 6, it is possible to reliably prevent the bottom from being damaged.

[0039] When an earthquake causes the joint 2 between the left and right bodies 3 and 4 to shake and widen, one joint plate 6 and the other joint plate 8 move apart, as shown in Figure 9, thereby absorbing the shaking caused by the earthquake.

[0040] At this time, one joint plate 6 is supported by one joint plate holding means 9, so it can slide left and right while maintaining its horizontal state without rotating downward from the horizontal state.

[0041] [Different modes for carrying out the invention] Next, different embodiments for carrying out the present invention will be described with reference to Figures 9 and 10. 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 redundant description will be omitted.

[0042] 9 and 10, the second embodiment of the present invention is different from the first embodiment of the present invention in that it does not include a slide support mechanism 13 and uses the other joint plate 8A fixedly attached to the wall surface 4a of the other frame 4. Even with this ceiling joint device 1A, the same effects as those of the first embodiment of the present invention can be obtained. Although not shown, a mounting bracket or the like may be fixed to the other joint plate 8A and attached to the other frame 4. [Industrial Applicability]

[0043] The present invention finds application in the ceiling joint device manufacturing industry. [Explanation of symbols]

[0044] 1, 1A: Ceiling joint device, 2: Joint portion, 3: One body, 4: The other body 5: pivot shaft; 6: one joint plate; 7: rolling member or sliding member, 8, 8A: other joint plate, 9: one joint plate holding means; 10: slide inclined surface; 11: engagement member; 12: recess; 13: slide support mechanism; 14: guide rail; 15: Roller, 16: Slide rail, 17: contact member, 18: stopper, 19: Cover plate.

Claims

1. A ceiling joint device that closes a joint in a ceiling portion between one skeleton and another skeleton, The joint plate is comprised of one joint plate rotatably attached at one end to the one frame via a pivot shaft, a rolling member or sliding member provided at the bottom of the other end of the one joint plate, one end of the other joint plate attached to the other frame and the other end of the other joint plate being provided so as to be in approximate contact with the other end of the one joint plate, one joint plate holding means for preventing the other end of the one joint plate from being displaced below a horizontal position, and a sliding inclined surface formed on the other joint plate along which the other end of the one joint plate slides in the event of an earthquake. The one joint plate holding means is a ceiling joint device composed of an engaging member arranged on one end side of the one joint plate so that at least the upper end is separated from the vertical wall surface of the one main body, and a stopper fixed to the one main body and abutting against the engaging member to prevent the other end of the one joint plate from rotating downward below approximately horizontal.

2. A ceiling joint device as described in claim 1, characterized in that the bottom of the other end side of one of the joint plates further comprises a downward groove-shaped recess extending in the front-to-back direction, near the rolling member or sliding member, and closer to the one of the main bodies than the rolling member or sliding member.

3. 3. A ceiling joint device according to claim 1, wherein one end of the other joint plate is attached to the other frame via a slide support mechanism so as to be slidable in the front-to-rear direction.

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