Refractory equipment
The fire-resistant device with sliding fire-resistant strips and support rails addresses the issue of sway direction changes during earthquakes, providing effective protection by absorbing and following the shaking, thus preventing damage.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- DOOEI GAISO KK
- Filing Date
- 2025-04-14
- Publication Date
- 2026-05-27
AI Technical Summary
Conventional fireproof devices at joint portions between building frames are ineffective when the frames sway in different directions due to earthquakes, leading to potential damage.
A fire-resistant device comprising fire-resistant strips and support rails that allow for sliding movement in the front-rear direction, enabling the strips to follow and absorb the shaking caused by earthquakes, even when the frames sway in different directions.
The device effectively absorbs and follows the shaking caused by earthquakes without damaging the building structure or the fire-resistant strips, ensuring continuous protection against flames and radiant heat.
Smart Images
Figure 0007866339000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a fireproof device provided at a joint portion between left and right body frames.
Background Art
[0002] Conventionally, a fireproof device or the like is provided outside (upper side or lower side) of a ceiling joint device or a floor joint device provided at a joint portion. As a fireproof device and a fireproof structure mainly provided at the joint portion, there is known "a fireproof wall characterized by comprising a fireproof material support mechanism pivotally supported on one wall surface of the ceiling or floor portion on the opening side of the left and right body frames arranged via the joint portion, slidably attached in the front - rear direction to a guide rail on the other wall surface, and having a substantially central portion projecting in a mountain - shape or valley - shape pivotally supported, and a fireproof material fixed to this fireproof material support mechanism, having both ends in contact with one wall surface and the other wall surface, and attached so as to be able to follow the movement of the fireproof material support mechanism and covering the joint portion of the ceiling or floor portion" (Patent Document 1).
[0003] However, such a fireproof wall is very effective when the left and right body frames sway only in the left - right direction due to an earthquake. However, when the left and right body frames sway in different front - rear directions, the fireproof zone cannot follow the sway of the earthquake, and there is a risk that the fireproof zone may be damaged.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] In view of the above - mentioned conventional drawbacks, an object of the present invention is to provide a fireproof device for a joint portion that can block flames and radiant heat caused by a fire and can follow the movements in all directions (front, rear, left, and right) caused by an earthquake.
[0006] 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.
[0007] 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] To achieve the above objective, the fire-resistant device 1 described in claim 1 of the present invention comprises a fire-resistant strip support rail 6 provided on a central maintenance mechanism 5 installed between the structural bodies, and fire-resistant strips 8 and 9 on one structural body side and the other structural body side, which are slidably attached to the fire-resistant strip support rail 6 in the front-rear direction. The fire-resistant strip 8 on one structural body side and the fire-resistant strip 9 on the other structural body side absorb the shaking caused by the earthquake by changing from a sagging position to a position where the sagging is reduced when the joint portion 2 sways due to an earthquake. On the other hand, when the one structural body 3 and the other structural body 4 sway in different front-rear directions due to an earthquake, the other ends of the fire-resistant strip 8 on one structural body side and the fire-resistant strip 8 on the other structural body side slide along the fire-resistant strip support rail 6 to follow the shaking caused by the earthquake.
[0009] The fire-resistant band on one of the structural members of the fire-resistant device according to claim 2 is characterized in that one end of the band is attached to the one structural member via a first hinge member, and the other end is attached to the fire-resistant band support rail via a mounting fixture so as to be slidable in the front-rear direction, and the fire-resistant band on the other structural member is characterized in that one end of the band is attached to the other structural member via a second hinge member, and the other end is attached to the fire-resistant band support rail via a mounting fixture so as to be slidable in the front-rear direction.
[0010] The fire-resistant strip support rail of the fire-resistant device according to claim 3 is characterized in that it comprises a beam member pivotally supported by the movable central maintenance mechanism and a guide rail fixed to the bottom of the beam member and having a slit, and the mounting fixture comprises a slide body inserted into the guide rail and slidable in the front-rear direction and a fire-resistant strip mounting portion provided on the slide body and capable of passing through the slit. [Effects of the Invention]
[0011] As is clear from the above explanation, the present invention provides the following effects. (1) In the invention described in claim 1, since the other ends of the fire-resistant strips on one and the other sides of the building structure are attached to the fire-resistant strip support rail so as to be slidable in the front-rear direction, even if the left and right sides of the building structure sway in different front-rear directions due to an earthquake, the fire-resistant strips on one and the other sides of the building structure will follow the swaying caused by the earthquake, and the swaying caused by the earthquake will be absorbed without damage to the building structure or the fire-resistant strips. (2) The inventions described in claims 2 and 3 also provide the same effects as in (1) above, and can follow the shaking caused by earthquakes more smoothly. [Brief explanation of the drawing]
[0012] Figures 1 to 6 are explanatory diagrams showing the first embodiment of the present invention. [Figure 1] A plan view of the fire-resistant device according to the first embodiment. [Figure 2] A cross-sectional view along line 2-2 in Figure 1. [Figure 3] Diagram illustrating the fire-resistant zone and its support rails. [Figure 4] A diagram illustrating the operation of joints that have narrowed due to an earthquake. [Figure 5] A diagram illustrating the operation of joints that have widened due to an earthquake. [Figure 6] A diagram illustrating the movement of a building when the left and right sides of the structure sway in different front-to-back directions during an earthquake. [Modes for carrying out 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 and right directions, front (bottom of the drawing), and rear (top of the drawing) directions are used with reference to Figure 1. The up (top of the drawing) and down (bottom of the drawing) directions are used with reference to Figure 2.
[0014] Furthermore, in this invention, "structure" refers to a building, road, slab, elevator shaft, or other structure on which joint plates can be installed, and "entrance" includes not only entrances with doors or gates, but also passages through which people, vehicles, etc., can pass.
[0015] In the first embodiment for carrying out the present invention shown in Figures 1 to 6, 1 is a fire-resistant device installed in the joint 2 between one structural frame 3 and the other structural frame 4. This fire-resistant device 1 can be used as a ceiling fire-resistant device 1 installed above the ceiling joint device E, and can also be used as a fire-resistant device 1 installed below the floor joint device.
[0016] In this embodiment, a fire-resistant device 1 for the ceiling, which is installed above the ceiling joint device E, will be described. Note that even if the fire-resistant device 1 is installed below the floor joint device, the only difference is that it is installed below the floor joint device; the basic configuration is the same. For the ceiling joint device E, a known ceiling joint device can be used, and the detailed configuration will be omitted.
[0017] As shown in FIGS. 1 and 2 for example, this refractory device 1 is a refractory device provided at the joint portion 2 between one housing 3 and the other housing 4, and includes a movable central maintenance mechanism 5 provided in a bridging state between the housings (a member that is diagonal with respect to the left and right housings in FIG. 1, and a member that is horizontal with respect to the left and right housings in FIG. 2), a refractory strip support rail 6 provided on the central maintenance mechanism 5, one refractory strip 8 on the side of one housing 3 having one end attached to the one housing 3 and the other end slidably attached to the refractory strip support rail 6 in the front-rear direction, and the other refractory strip 9 on the side of the other housing 4 having one end attached to the other housing 4 and the other end slidably attached to the refractory strip support rail 6 in the front-rear direction. When the joint portion 2 expands due to an earthquake and the one refractory strip 8 on the side of one housing 3 and the other refractory strip 9 on the side of the other housing 4 swing (see FIG. 5), they change from a hanging posture to a posture with less hanging to absorb the swinging movement caused by the earthquake. On the other hand, when the one housing 3 and the other housing 4 swing in different front-rear directions due to an earthquake (see FIG. 6), the other ends of the one refractory strip 8 on the side of one housing 3 and the other refractory strip 8 on the side of the other housing 8 slide on the refractory strip support rail 6 to follow the swinging movement caused by the earthquake. In FIG. 2, reference numeral 7 on the side of one housing 3 is a first hinge member, and reference numeral 7 on the other housing 4 is a second hinge member.
[0018] Now, as shown in FIGS. 1, 2, 4, etc., for example, in this embodiment, the central maintenance mechanism 5 includes a pair of slide rails 10 provided on one housing 3 and the other housing 4, and a plurality of bar members 12 provided at both ends slidably in the front-rear direction on the slide rails 10 via sliding members 11. A long refractory strip support rail 6 is connected in a suspended state to a substantially central portion of the plurality of bar members 12 by a pivot pin 5a. Since the central portion of the bar member 12 is always located at a substantially central portion in the left-right direction of the joint portion 2, the refractory strip support rail 6 provided at the substantially central portion of the bar member 12 is always located at the substantially central portion of the joint portion 2. Also in FIG. 1, the plurality of bar members 12 rotate and move parallel to each other with the pivot pin 5a as a fulcrum, with one bar member 12 and the other bar member 12 spaced apart from it.
[0019] The slide rail 10 is made of a rail material having a substantially upward U-shape, a substantially crank shape, a substantially lip groove-shaped steel, or a substantially channel shape, and is provided so as to extend in the front-rear direction. In the present embodiment, the sliding member 11 is a roller pivotally provided at both ends of the bar member 12, and is formed into a shape that can smoothly move within the slide rail 10. However, the sliding member 11 is not limited to a roller-shaped member as long as it can smooth the movement within the slide rail 10 and can be of any type.
[0020] Further, the slide rail 10 may be provided with anti-drop means so that the sliding member 11 does not drop even when the left and right bodies sink unevenly. For example, a return is provided at the edge on the joint portion 2 side, and a locking piece or the like that engages with the return is also provided on the sliding member 11. A pin or the like is passed through near both ends of the bar member 12, and when uneven settlement or the like occurs, the pin or the like contacts the guide rail 10 to prevent dropping. In such a case, the sliding member 11 may be directly or indirectly attached to the bar member 12 via a hinge member or the like.
[0021] The bar member 12 is provided so as to be in an inclined state in plan view, and even when the joint portion 2 becomes widest due to an earthquake, it is in an inclined state in plan view, preferably having dimensions such that the angle formed with the left and right bodies 3 and 4 is about 60 degrees.
[0022] As shown in Figure 3, the fire-resistant belt support rail 6 consists of a bar-shaped beam member 13 that is pivotally attached to a plurality of bar members 12 of the central maintenance mechanism 5, and a guide rail 15 fixed to the bottom of the beam member 13 and having a pair of slits 14. It is located approximately in the center of the joint 2 and extends in the front-rear direction. In this embodiment, the guide rail 15 is formed in a shape resembling two connected light channel steel sections, and the interior of the guide rail 15 is a space that allows the fire-resistant belt fixing device, described later, to be installed in the front-rear direction. Alternatively, a pair of guide rails 15 in the shape of light channel steel or hat-shaped steel may be fixed to the bottom of the beam member 13. The pair of guide rails 15 may be separate types with individual slits or integrated types with a pair of slits, but an integrated type with a pair of slits is preferable considering the reduction of the number of parts and ease of construction.
[0023] As shown in Figure 3, the fire-resistant strips 8 and 9 on one and the other sides of the building structure are composed of a fire-resistant material 16 made of a fire-resistant and flexible cotton-like material such as rock wool, and a bag-shaped covering member 17 filled with this fire-resistant material 16. Note that, for example, if a sheet-shaped fire-resistant material 16 is used, the fire-resistant strips 8 and 9 may be composed solely of this fire-resistant material 16, or the sheet-shaped fire-resistant material 16 may be covered with the covering member 17.
[0024] In this embodiment, the covering member 17 is a flexible sheet, and it is desirable that this covering member 17 is also made of a fire-resistant material.
[0025] The fire-resistant strips 8 and 9 on one and the other sides of the building structure are attached at one end to the building structure 3 and 4 via the first and second hinge members 7, respectively, and at the other end they are slidably attached in the front-rear direction to the fire-resistant strip support rail 6 via a mounting bracket 18. The first and second hinge members 7 and the mounting bracket 18 are fixed with screws or the like.
[0026] Fire-resistant zones 8 and 9 are designed so that they will not rupture even when the joint 2 expands to its maximum extent due to an earthquake. Their length in the left-right direction is greater than the width of the joint 2 when it is fully expanded. Therefore, in the normal state (as shown in Figures 1 and 2), their central portion sags downward due to its own weight, and the fire-resistant zones 8 and 9 as a whole are arranged to form a roughly W shape when viewed from the front.
[0027] The mounting fixture 18 consists of a sliding body 19 that is inserted into the guide rail 15 and can slide in the front-rear direction, and a fire-resistant belt mounting portion 20 provided on the sliding body 19 that can pass through the slit 14. In this embodiment, the sliding body 19 is formed in a cylindrical shape in cross-section, and the plate-shaped portion that protrudes outward from this cylindrical portion is the fire-resistant belt mounting portion 20.
[0028] The fire-resistant belt attachment section 20 is shaped to allow passage through the slit 14 of the guide rail 15, and the fire-resistant belts 8 and 9 are fixed to the fire-resistant belt attachment section 20 with screws or the like. Alternatively, a clamping device or the like may be fixed to the tip of the fire-resistant belt attachment section 20, and the other ends of the fire-resistant belts 8 and 9 may be attached using this clamping device.
[0029] When the structural elements 3 and 4 sway from side to side during an earthquake, causing the joint 2 to narrow, the central parts of the fire-resistant zones 8 and 9 sag more than usual, as shown in Figure 4, absorbing the shaking caused by the earthquake.
[0030] When the structural members 3 and 4 sway from side to side during an earthquake, causing the joint 2 to widen, the sagging of the fire-resistant strips 8 and 9 decreases (resulting in less downward sagging), as shown in Figure 5, thus absorbing the shaking caused by the earthquake.
[0031] If the structures 3 and 4 sway in different longitudinal directions during an earthquake, as shown in Figure 6, the other end of the fire-resistant strip 8 on one side of the structure slides forward, following the swaying motion of the structure 3 in synchronization with the structure 3, while the other end of the fire-resistant strip 9 on the other side of the structure slides backward, following the swaying motion of the structure 4 in synchronization with the structure 4, thereby absorbing the swaying motion of the earthquake without damaging the structure or these devices.
[0032] In the embodiment of the present invention, a central retention mechanism using a pair of slide rails and multiple bar members was used, but a known central retention mechanism using link members, rack and pinion, etc., can also be used. [Industrial applicability]
[0033] This invention is used in industries that manufacture and use fire-resistant devices for joints. [Explanation of Symbols]
[0034] 1: Fireproof device, 2: Joint area, 3: One structural frame, 4: The other structural frame, 5: Central maintenance mechanism, 6: Fire-resistant belt support rail, 7: Hinge member, 8: Fire-resistant strip on one side of the building structure, 9: Fire-resistant strip on the other side of the structure, 10: Slide rail, 11: sliding material, 12: bar component, 13: Beam material, 14: Slit, 15: Guide rail, 16: Fireproof material, 17: Covering material, 18: Mounting hardware, 19: Sliding body, 20: Fire-resistant band attachment part, E: Joint device for ceilings.
Claims
1. A fire-resistant device provided in the joint between one structural body and the other structural body, comprising a fire-resistant band support rail provided on a central maintenance mechanism provided between the structural bodies, and fire-resistant bands on one structural body side and the other structural body side that are slidably attached to the fire-resistant band support rail in the front-rear direction, wherein when the joint widens due to an earthquake, the fire-resistant band on one structural body side and the fire-resistant band on the other structural body side each change from a sagging position to a less sagging position to absorb the shaking caused by the earthquake, and when the structural body on one structural body and the other structural body shake in different front-rear directions due to an earthquake, the other ends of the fire-resistant band on one structural body side and the fire-resistant band on the other structural body side slide along the fire-resistant band support rail to follow the shaking caused by the earthquake.
2. The fire-resistant device according to claim 1, characterized in that one end of the fire-resistant strip on one structural frame side is attached to the one structural frame via a first hinge member, and the other end is attached to the fire-resistant strip support rail via a mounting fixture so as to be slidable in the front-rear direction, and one end of the fire-resistant strip on the other structural frame side is attached to the other structural frame via a second hinge member, and the other end is attached to the fire-resistant strip support rail via a mounting fixture so as to be slidable in the front-rear direction.
3. The fire-resistant device according to claim 2, characterized in that the fire-resistant belt support rail is composed of a beam member pivotally supported by the central maintenance mechanism and a guide rail fixed to the bottom of the beam member and having a slit, and the mounting fixture is composed of a slide body inserted into the guide rail and slidable in the front-rear direction and a fire-resistant belt mounting portion provided on the slide body and capable of passing through the slit.