Clearance filling unit

Abstract

To provide a clearance filling unit which can easily and properly fill a clearance space which is formed between an inner face of a penetration hole obliquely formed at a partitioning body and an outer face of a long-length body.SOLUTION: A clearance filling unit (1) for filling a clearance space (S) between a penetration hole (6H) which is formed at a partitioning body (6) of a building and a long-length body (7) inserted into the penetration hole comprises a sleeve member (20) inserted into the penetration hole (6H), a flange member (30) connected to the sleeve member (20) so as to be adjustable in an angle, and fixed to a periphery of the penetration hole (6H) formed at the partitioning body (6), and a clearance filling member (50) connected to the sleeve member (20).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a gap closure unit. [Background technology]

[0002] In general, the interior space of a building is divided into a number of rooms by partitions such as walls, floors, and ceilings. In order to arrange long objects such as pipes and cables throughout these rooms, through-holes may be formed in the partitions and the long objects may be inserted through the through-holes. In this case, post-processing such as filling and sealing the gap between the through-hole and the long object is required. For example, in order to prevent the spread of fire in the event of a fire occurring in a room, it is necessary to provide fire prevention measures to the gap between the through-hole and the long object.

[0003] A technology that enables such post-processing to be easily and appropriately performed is disclosed in Japanese Patent No. 6150933 (Patent Document 1). In Patent Document 1, a gap closing unit (fire prevention unit 1) equipped with a cylindrical sleeve member (sleeve member 20) having a flange and a flexible gap filling member (fireproof pack member 30) is used to perform the post-processing. Since the sleeve member and the gap filling member are integrated at one end of the sleeve member, even if the gap filling member is soft, the gap filling member can be easily inserted deep into the through hole together with the sleeve member to properly close the gap.

[0004] However, in the gap blockage unit of Patent Document 1, the sleeve member having the flange portion (flange portion 22) and the main body portion (sleeve main body portion 21) is constructed as a single unit. The gap blockage unit of Patent Document 1 can be applied only to through holes formed perpendicularly in the partition body, but cannot be applied to through holes formed obliquely in the partition body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6150933 Summary of the Invention [Problem to be solved by the invention]

[0006] It is desirable to realize a gap closing unit that can easily and appropriately fill the gap space that occurs between the inner surface of a through hole formed obliquely in a partition and the outer surface of an elongated body. [Means for solving the problem]

[0007] The gap closing unit according to the present invention comprises: A gap closing unit for closing a gap space between a through hole formed in a partition of a building and an elongated body inserted into the through hole, a sleeve member that is attached to the elongated body and inserted into the through hole; a flange member connected to the sleeve member so as to be angle-adjustable and fixed to a periphery of the through hole in the partition; a gap filler member connected to the sleeve member.

[0008] According to this configuration, the sleeve member inserted into the through hole and the flange member fixed around the through hole are connected so that the angle can be adjusted, so that the gap filling member can be applied not only to through holes formed perpendicular to the partition body, but also to through holes formed at an angle. Since the gap filling member is connected to the sleeve member, even if the gap filling member is soft, the gap filling member can be easily inserted deep into the through hole together with the sleeve member to properly close the gap. This makes it possible to easily and properly fill the gap space that occurs between the inner surface of the through hole formed at an angle in the partition body and the outer surface of the elongated body.

[0009] Preferred embodiments of the present invention will be described below. However, the scope of the present invention is not limited to the preferred embodiments described below.

[0010] In one embodiment, one of the sleeve member and the flange member has a shaft portion extending along a tangential direction of the through hole, It is preferable that the other of the sleeve member and the flange member has a bearing portion that slidably holds the shaft portion.

[0011] With this configuration, the angle between the sleeve member and the flange member can be appropriately adjusted, and while the flange member is fixed to the partition, the sleeve member can be positioned so that it fits along the inner surface of the obliquely formed through hole.

[0012] In one embodiment, It is preferable that the bearing portion has a pair of bearing pieces which engage with the shaft portion at different positions and in alternating directions.

[0013] According to this configuration, since resistance to external forces acting from different directions is imparted, the sleeve member and the flange member are less likely to come off.

[0014] In one embodiment, It is preferable to provide a pressure receiving portion that receives a pressing force against the sleeve member within the through hole at a position different from a connection portion between the flange member and the sleeve member.

[0015] According to this configuration, the unstable sleeve member, which is merely connected to the flange member so as to be angle adjustable, can be securely inserted to the back of a through hole that is difficult for an operator to reach.

[0016] In one embodiment, The flange member has a flange portion and an arm portion extending in an arc shape from the flange portion, The sleeve member has a main body portion and an arm insertion portion provided on the main body portion and into which the arm portion is inserted, It is preferable that an engagement claw is formed on the arm portion, and the pressure receiving portion is configured by engagement between the engagement claw and the arm insertion portion.

[0017] According to this configuration, with the arc-shaped arm portion inserted into the arm insertion portion, the angle-adjustable connection between the sleeve member and the flange member can be stabilized. Also, the engagement claw formed on the arm portion engages with the arm insertion portion, thereby appropriately realizing a pressure receiving portion (a configuration that receives a pressing force against the sleeve member within the through hole).

[0018] In one embodiment, It is preferable that a plurality of the engaging claws are intermittently formed on the arm portion.

[0019] According to this configuration, by appropriately selecting the engaging claw to be engaged with the arm insertion portion, the sleeve member can be pushed into the through hole with the angle between the sleeve member and the flange member close to the inclination angle of the through hole formed obliquely in the partition body. This makes it easy to insert the sleeve member firmly to the back.

[0020] In one embodiment, It is preferable that a stopper piece be provided at the tip of the arm portion to prevent the arm portion from coming off the arm insertion portion.

[0021] According to this configuration, it is possible to prevent the arm portion from coming out of the arm insertion portion within the through hole.

[0022] In one embodiment, It is preferable that the retaining piece is provided so as to extend outward from the arc-shaped arm portion.

[0023] With this configuration, compared to a configuration in which the retaining piece is provided so as to extend inward from the arc-shaped arm, it is possible to reduce the overall protrusion of the arm and the retaining piece from the sleeve member. Therefore, the sleeve member is less likely to get caught when being inserted into the through hole, and the sleeve member can be easily inserted.

[0024] In one embodiment, The pair of arms are provided opposite each other at a predetermined distance, It is preferable that the distance between the distal end portions of the pair of arms is narrower than the distance between the proximal end portions.

[0025] With this configuration, compared to a configuration in which the pair of arms are entirely parallel from the base end to the tip end, it is possible to reduce the amount of each arm protruding from the sleeve member. Therefore, the sleeve member is less likely to get caught when being inserted into the through hole, and can be easily inserted.

[0026] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which are given with reference to the drawings. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a perspective view of a fire prevention structure using a gap closing unit according to an embodiment; [Diagram 2] Perspective view of the gap closing unit [Diagram 3] Exploded perspective view of the gap blockage unit [Figure 4] Cross-sectional view of pressure receiving part [Diagram 5] Bottom view of the gap blockage unit [Figure 6] View of the bagged fireproofing material from one side [Figure 7] View of the bagged fireproof material from the other side [Figure 8] Schematic diagram of a fire prevention method using a gap blocking unit DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] An embodiment of the gap blocking unit will be described with reference to the drawings. In this embodiment, an example in which the gap blocking unit 1 is applied to a fire prevention structure (one example of a gap blocking structure) intended to prevent the spread of fire will be described. The gap blocking unit 1 is used to block a gap space S between a through hole 6H formed in a partition body 6 of a building and a long body 7 inserted into the through hole 6H. As shown in FIG. 1, the gap blocking unit 1 of this embodiment is particularly suitable for application to a through hole 6H formed obliquely in the partition body 6.

[0029] In this embodiment, the partitioning body 6 to which the fire prevention structure is applied is a fire-resistant and fire-preventive structure that divides the space inside a building into a plurality of room spaces. The partitioning body 6 in this embodiment is a floor (or ceiling) that divides a plurality of room spaces vertically. The partitioning body 6 may be a solid wall made of, for example, reinforced concrete (RC) or aerated concrete (ALC), or may be a hollow wall made of gypsum board or the like. Of course, structures other than these may be used as the partitioning body 6.

[0030] The partition 6 has a through hole 6H formed therein, penetrating the partition 6 in its thickness direction. The through hole 6H in this embodiment is formed obliquely, not perpendicularly, to the partition 6. The through hole 6H in this embodiment has a circular shape in a cross section perpendicular to its axial direction (hereinafter referred to as an "orthogonal cross-sectional shape"), and has an elliptical shape (opening shape) at a portion opening into the partition 6. However, the present invention is not limited to such a configuration, and the specific orthogonal cross-sectional shape of the through hole 6H may be, for example, an elliptical shape, a polygonal shape, or any other shape.

[0031] An elongated body 7 is inserted through the through hole 6H of the partition body 6. The elongated body 7 has an elongated structure extending in one direction, such as a linear body, a tubular body, or a band-like body. An example of such an elongated body 7 is piping for an air conditioner. In this embodiment, the elongated body 7 includes a piping member 71 for circulating a refrigerant.

[0032] The piping member 71 has a fluid pipe 71A through which a refrigerant flows, and a covering material 71B covering the periphery of the fluid pipe 71A. The fluid pipe 71A is, for example, a tubular member made of metal, and the covering material 71B is, for example, a heat insulating material made of synthetic resin that is applied to the exterior of the fluid pipe 71A. In addition to these, the long body 7 may include, for example, a drain pipe for discharging drain water made of a tubular member made of synthetic resin, an electric cable made of a conductor wire with an insulating covering material provided therearound, and the like. Alternatively, the long body 7 may be a water supply pipe (for example, a cross-linked polyethylene pipe or a polybutene pipe) made of a tubular member made of synthetic resin. A plurality of long bodies 7 are bundled and inserted into the through hole 6H.

[0033] A fireproofing measure is applied to the gap space S between the through hole 6H and the elongated body 7. The gap space S is a space that spreads in a radial gap between the inner surface of the through hole 6H and each of the outer surfaces of the multiple elongated bodies 7. The fireproofing structure of this embodiment is mainly realized by using a bagged fireproof material 50 arranged in the through hole 6H. A gap closing unit 1 is used to hold the bagged fireproof material 50 in the through hole 6H.

[0034] 2, the gap blockage unit 1 includes a sleeve member 20, a flange member 30, and a bagged fireproof member 50 (not shown). The sleeve member 20 is attached to the elongated body 7 and inserted into the through hole 6H. The flange member 30 is fixed to the periphery of the through hole 6H in the partition body 6. The bagged fireproof member 50 is connected to and integrated with the sleeve member 20. The gap blockage unit 1 of this embodiment also includes a pressure receiving portion 40.

[0035] 2 and 3, the sleeve member 20 has a main body portion 21, a bearing portion 22, an arm insertion portion 24, a support piece 26, and a fixing portion 27. These are formed using, for example, a resin material, and can be integrally formed by, for example, injection molding.

[0036] The main body 21 is a main body portion of the sleeve member 20, and is inserted into the through hole 6H. The main body 21 is formed in a tubular shape (partially cylindrical in this example) that corresponds to the orthogonal cross-sectional shape of the through hole 6H. The main body 21 in this embodiment is missing a portion in the circumferential direction (a range having a central angle of approximately 120°), and the main body 21 is formed in a C-shaped tubular shape as a whole. Since the portion in the circumferential direction is missing, the main body 21 can be laterally attached together with the flange member 30 to the elongated body 7 inserted into the through hole 6H.

[0037] The main body 21 includes a first circumferential extending portion 21A and a second circumferential extending portion 21B extending along the circumferential direction, and an axial extending portion 21C extending along the axial direction. The first circumferential extending portion 21A extends along the circumferential direction on the upper side (the flange member 30 side), and the second circumferential extending portion 21B extends along the circumferential direction on the lower side (the opposite side to the flange member 30). The axial extending portion 21C extends along the axial direction so as to connect the first circumferential extending portion 21A and the second circumferential extending portion 21B. A plurality of axial extending portions 21C (three in this example) are provided, and two axial extending portions 21C are provided at both circumferential ends of the C-shaped cylinder, and the remaining axial extending portions 21C are provided in a distributed manner between them.

[0038] The bearing portion 22 is a portion that slidably holds the shaft portion 32 provided on the flange member 30. In this embodiment, the bearing portion 22 is provided at the upper end portion of the circumferential center portion of the first circumferential extending portion 21A. The bearing portion 22 is provided so as to protrude upward (toward the flange member 30) from the first circumferential extending portion 21A.

[0039] The bearing portion 22 is formed so as to curve along the outer surface of the shaft portion 32 of the flange member 30. The bearing portion 22 is formed in a hook shape with an open tip so that the shaft portion 32 of the flange member 30 can be attached and detached. Furthermore, in this embodiment, the bearing portion 22 is configured to have a pair of bearing pieces 23 that engage with the shaft portion 32 of the flange member 30 at different positions. The pair of bearing pieces 23 engage with the shaft portion 32 from alternate directions. The gap between the pair of bearing pieces 23 is wider than the diameter of the shaft portion 32, and the shaft portion 32 can be attached and detached from the pair of bearing pieces 23 through this gap.

[0040] The arm insertion portion 24 is a portion through which the arm portion 34 provided on the flange member 30 is inserted. In this embodiment, two arm insertion portions 24 are provided, and these two arm insertion portions 24 are provided on the inner surface side near both circumferential ends of the first circumferential extending portion 21A. The two arm insertion portions 24 are provided at positions with a phase difference of 180° in the C-shaped cylindrical main body portion 21. The arm insertion portion 24 is formed in the shape of a closed loop.

[0041] As shown in Figs. 2 to 4, the arm insertion portion 24 has an engagement claw 24A and an operation piece portion 24B. The engagement claw 24A is formed to protrude toward the first circumferential extending portion 21A side. The engagement claw 24A is formed so that the upper side is a flat surface and the lower side is an inclined surface. The engagement claw 24A engages with an engagement claw 34A formed on the arm portion 34 of the flange member 30.

[0042] The operation piece 24B is formed integrally with the engagement claw 24A and extends upward. The operation piece 24B can be flexibly deformed toward the center of the sleeve member 20 by an operator operating it with his or her fingers. By actually flexibly deforming the operation piece 24B, the engagement between the engagement claw 24A of the arm insertion portion 24 and the engagement claw 34A of the arm portion 34 can be released. This release of engagement is performed when changing the engagement claw 34A of the arm portion 34 that should be engaged with the engagement claw 24A of the arm insertion portion 24.

[0043] As shown in Figs. 2 and 3, the support piece 26 is formed as a thin plate-like piece protruding inward from the lower end of the main body 21. The support piece 26 is formed in a trapezoidal shape. The support piece 26 receives and supports the bagged fireproof member 50 with its upper surface. In the case where the through-hole 6H is formed obliquely through the horizontally extending partition body 6 as in this embodiment, the support piece 26 receives and supports the bagged fireproof member 50 from obliquely below. In this embodiment, a plurality of support pieces 26 are provided in a distributed manner in the circumferential direction. More specifically, two support pieces 26 are provided near both ends in the circumferential direction of the second circumferential extension portion 21B.

[0044] The fixing portion 27 protrudes inward from the lower end of the main body 21 and is configured to be able to change its position to a bent position. In the bent position, the fixing portion 27 is engaged with a locking claw portion that is separately formed to protrude. In this embodiment, the fixing portion 27 is inserted through an insertion hole 53 formed in the bag 51 of the bagged fireproof member 50, so that the sleeve member 20 and the bagged fireproof member 50 are integrated in a detachable manner.

[0045] The flange member 30 is configured as a separate body from the sleeve member 20. As shown in Figures 2 and 3, the flange member 30 has a flange portion 31, a shaft portion 32, and an arm portion 34. These are formed using, for example, a resin material, and can be integrally formed by, for example, injection molding.

[0046] The flange portion 31 is a main body portion of the flange member 30, and is fixed around the through hole 6H in the partition body 6. The flange portion 31 is formed in a shape corresponding to the main body portion 21 of the sleeve member 20, and is formed in an overall C-shape with a portion of its circumference (a range where the central angle is approximately 120°) missing. Since the portion of the circumference is missing, the flange portion 31 can be laterally attached together with the sleeve member 20 to the elongated body 7 inserted into the through hole 6H.

[0047] The shaft portion 32 is provided at the circumferential center of the flange portion 31. The shaft portion 32 is formed in an elongated cylindrical shape, and is disposed so as to follow the tangential direction of the through-hole 6H when the flange portion 31 is fixed to the partition body 6. The shaft portion 32 is slidably held by a bearing portion 22 provided in the sleeve member 20. In this way, the flange member 30 is connected to the sleeve member 20 so that the angle can be adjusted.

[0048] The arm portion 34 extends downward (toward the sleeve member 20) from the flange portion 31. In this embodiment, two arm portions 34 are provided, and these two arm portions 34 are provided so as to extend from the vicinity of both circumferential ends of the flange portion 31. The arm portion 34 is formed in an arc shape. More specifically, the arm portion 34 is formed in the shape of an arc band having a constant width and extending over a range of a central angle of approximately 90°.

[0049] In this embodiment, the two arm portions 34 are provided at positions with a phase difference of 180° on the C-shaped flange portion 31. Therefore, the pair of arm portions 34 are provided facing each other with a predetermined distance in between. As shown in Fig. 5, the pair of arm portions 34 are formed slightly inclined so that the distance D1 on the tip end side is slightly narrower than the distance D2 on the base end side. This keeps the maximum protrusion of the arm portions 34 from the main body portion 21 of the sleeve member 20 small.

[0050] The arm portion 34 is inserted into the arm insertion portion 24 of the sleeve member 20 with the shaft portion 32 held by the bearing portion 22 of the sleeve member 20 (in other words, with the flange member 30 and the sleeve member 20 connected in an angle-adjustable manner). The arc-shaped arm portion 34 maintains a state of being inserted into the arm insertion portion 24 regardless of the relative positions of the flange member 30 and the sleeve member 20, and assists in the angle-adjustable connection between the flange member 30 and the sleeve member 20.

[0051] An engagement claw 34A is formed on the arm portion 34. In this embodiment, a plurality of engagement claws 34A are intermittently formed on the arm portion 34. The plurality of engagement claws 34A are formed at regular intervals (for example, at central angle intervals of 15°). The engagement claws 34A are formed to protrude toward the inside of the arm portion 34 (i.e., toward the center of the C-shaped flange portion 31). As shown in FIG. 4, the engagement claw 34A is formed so that the lower side is a flat surface and the upper side is an inclined surface. The engagement claw 34A engages with the engagement claw 24A formed on the arm insertion portion 24 of the sleeve member 20.

[0052] With the engaging claws 34A and 24A engaged, a pressing force can be applied from the flange member 30 side toward the sleeve member 20 side. In other words, with the engaging claws 34A and 24A engaged, the gap blockage unit 1 can receive a pressing force applied from the flange member 30 side. In this embodiment, a pressing force receiving portion 40 is formed by the engagement between the engaging claws 34A and the engaging claws 24A formed on the arm insertion portion 24. By providing such a pressing force receiving portion 40, the pressing force against the sleeve member 20 can be received in the through hole 6H at a position different from the connection portion between the flange member 30 and the sleeve member 20.

[0053] A retaining piece 35 is provided at the tip of the arm portion 34. The retaining piece 35 extends in a direction perpendicular to the direction in which the arc-shaped arm portion 34 extends. The retaining piece 35 engages with the arm insertion portion 24 from below when the flange member 30 attempts to open relative to the sleeve member 20 by more than a predetermined angle. In this way, the retaining piece 35 prevents the arm portion 34 from coming out of the arm insertion portion 24.

[0054] In this embodiment, the retaining piece 35 is provided so as to extend outward (outward when viewed from the imaginary center of the arc-shaped arm portion 34) from the arc-shaped arm portion 34. In this way, the maximum amount of protrusion of the arm portion 34, including the retaining piece 35, from the main body portion 21 of the sleeve member 20 can be kept small, compared to a configuration in which the retaining piece 35 extends inward.

[0055] 6 and 7, the bagged fireproof component 50 includes a bag 51 and a paste-like first thermally expandable fireproof material 54 contained in the bag 51. The bagged fireproof component 50 also includes a metal thin film sheet 55 provided on the outer surface of the bag 51, a second thermally expandable fireproof material 56, a holding substrate 57, and a cushioning material 58. In this embodiment, the bagged fireproof component 50 corresponds to a "gap filling member."

[0056] The bag body 51 can be formed, for example, from a resin film material (for example, a plastic film such as a polyethylene film or a nylon film). The bag body 51 is formed by folding one sheet of film material in half, or by overlapping two sheets of film material. The outer edge of the bag body 51 is a sealed portion 52 formed, for example, by thermal fusion. The sealed portion 52 is formed in a frame shape. At this sealed portion 52, the bag body 51 is in close contact with the bag body 51 without sandwiching the first thermally expandable fireproof material 54 therebetween.

[0057] A plurality of insertion holes 53 are formed at predetermined intervals on one side (specifically, one of the long sides) of the frame-shaped sealing portion 52. The bagged fire-resistant member 50 is connected to the sleeve member 20 by inserting the insertion holes 53 into the fixing portion 27 provided on the main body portion 21 of the sleeve member 20.

[0058] The first thermally expandable fireproof material 54 is a member having thermal expansion (the property of increasing in volume by heating) and fire resistance (the property of being resistant to fire heat, and the property of being difficult to burn due to a high melting temperature). As the first thermally expandable fireproof material 54, a known material can be used without any particular limitation, and for example, a putty-like material (thermally expandable putty-like fireproof material) can be used. However, the first thermally expandable fireproof material 54 of this embodiment contains a larger amount of plasticizer (water in the case of water-based, oil in the case of oil-based) than usual, and is paste-like as a whole. When heated to, for example, 200°C or higher, the first thermally expandable fireproof material 54 expands in its thickness direction. The thermal expansion coefficient of the bagged fireproof member 50 including the first thermally expandable fireproof material 54 may be, for example, 2 to 40 times.

[0059] 6, the thin metal sheet 55 is attached to one side of the bag 51. The thin metal sheet 55 can be made of a thin aluminum sheet such as aluminum glass cloth or aluminum wire having a thickness of 20 μm to 300 μm. By attaching such a thin metal sheet 55 to the bag 51, it is possible to impart non-combustibility to the area. The thin metal sheet 55 is provided in the area of ​​the bag 51 on the side where the insertion hole 53 is formed.

[0060] As shown in FIG. 7, the second heat-expandable fire-resistant material 56 is provided on the other side of the bag body 51 (the side opposite to the metal thin film sheet 55). The second heat-expandable fire-resistant material 56 is also a member having heat expandability and fire resistance. The second heat-expandable fire-resistant material 56 is harder and less likely to deform than the first heat-expandable fire-resistant material 54. The second heat-expandable fire-resistant material 56 is composed of, for example, a resin composition containing a heat-expandable base material, an inorganic filler, and a resin component. The second heat-expandable fire-resistant material 56 expands in its thickness direction when heated to, for example, 200° C. or higher. The expansion coefficient of the second heat-expandable fire-resistant material 56 may be, for example, 5 to 40 times. The second heat-expandable fire-resistant material 56 is provided back-to-back with the metal thin film sheet 55 in the region on the side where the insertion hole 53 is formed in the bag body 51.

[0061] As shown in Fig. 7, the retaining substrate 57 is provided on the other side of the bag body 51 (the side on the same side as the second thermally expandable fire-resistant material 56). The retaining substrate 57 can be made of, for example, an aluminum glass cloth tape having an adhesive layer. The retaining substrate 57 is formed in a sheet shape, and is fixed to the bag body 51 in a state where it protrudes from an end of the bag body 51 on the opposite side to the insertion hole 53 (the opposite side to the second thermally expandable fire-resistant material 56). A cushioning material 58 is attached to and held on the portion of the retaining substrate 57 protruding from the bag body 51.

[0062] 6, the cushioning material 58 is provided on the same surface as the metal thin film sheet 55. The cushioning material 58 is flexible and can be deformed to follow the outer surface shape of the multiple elongated bodies 7. The cushioning material 58 can be made of foamed resin such as soft urethane foam or polyethylene foam. The cushioning material 58 can also be made of inorganic fibers such as ceramic wool, glass wool, or rock wool.

[0063] Hereinafter, a construction procedure of a fire prevention method performed using the gap closing unit 1 of this embodiment will be described. As shown in FIG. 8, first, in a state where a bundle of elongated bodies 7 is arranged in a through hole 6H formed in a partition body 6 of a building, the gap closing unit 1 is arranged so as to surround the periphery of one bundle of elongated bodies 7 outside the through hole 6H. At this time, since the main body 21 of the sleeve member 20 is a C-shaped tube and the flange portion 31 of the flange member 30 is also C-shaped and can be attached later, the gap closing unit 1 can be slid from the side and arranged around the bundle of elongated bodies 7. At this point, the flange member 30 is closed with respect to the sleeve member 20 (the flange portion 31 is closely aligned with the first circumferential extension portion 21A, and the angle formed is 0°).

[0064] In this state, the entire gap blockage unit 1 is pushed in and inserted into the through hole 6H along the extension direction of the through hole 6H and the elongated body 7. This insertion is continued until a part of the flange member 30 abuts against the upper surface of the partition body 6.

[0065] When the flange member 30 comes into contact with the upper surface of the partition body 6, the flange member 30 is opened relative to the sleeve member 20 without changing the sleeve member 20. At this time, the flange member 30 is opened until the flange portion 31 of the flange member 30 becomes approximately parallel to the upper surface of the partition body 6. The engagement claw 34A formed on the arm portion 34 of the flange member 30 and the engagement claw 24A formed on the arm insertion portion 24 of the sleeve member 20 slide over their respective inclined surfaces, thereby allowing the flange member 30 to open.

[0066] If the flange member 30 is accidentally opened too far, the operator can disengage the engagement claw 34A from the engagement claw 24A by bending the operation piece 24B inward, thereby returning the over-open flange member 30 to its original position. This allows the flange 31 to be adjusted so that it is approximately parallel to the upper surface of the partition body 6.

[0067] Thereafter, when a force is applied to push the gap blockage unit 1 further inward, the engaging claw 34A of the arm portion 34 located directly above the engaging claw 24A of the arm insertion portion 24 engages with each other at their flat surfaces. The sleeve member 20 and the bagged fireproof member 50 connected thereto can be firmly inserted to the back by three points: the pair of pressure receiving portions 40 thus realized, and the connecting portion (the engaging portion between the shaft portion 32 and the bearing portion 22) between the sleeve member 20 and the flange member 30. In particular, the sleeve member 20, which is unstable when it is only connected to the flange member 30 at the engaging portion between the shaft portion 32 and the bearing portion 22 so as to be angle adjustable, can be firmly inserted to the back in the through hole 6H, which is difficult for an operator to reach.

[0068] At this time, the flange portion 31 of the flange member 30 is in a state of fitting along the periphery of the through hole 6H in the partition body 6. A hole portion for screw fastening is formed in the flange portion 31 (see FIG. 2, etc.), and the flange member 30 can be completely fixed to the partition body 6 by fastening with a screw through this hole portion (see FIG. 1). It is not essential to completely fix with a screw fastening, etc., and as long as the flange member 30 does not move from the surface of the partition body 6 and remains in place (such a mode is also considered to be included in the concept of "fixing"), it is possible to proceed directly to the next step.

[0069] Finally, the bagged fireproof member 50 closes the gap space S between the through hole 6H and the elongated body 7, and fills the valley spaces between adjacent elongated bodies 7. The bagged fireproof member 50 is mainly composed of a paste-like first thermally expandable fireproof material 54 contained in a bag 51, and therefore can easily conform to the external shape of the bundle of elongated bodies 7. In addition, the bagged fireproof member 50 has a retaining base material 57 and a flexible cushioning material 58, so that it can fill the valley spaces formed by the multiple elongated bodies 7 and can maintain that state for a long period of time.

[0070] Other embodiments (1) In the above embodiment, the bearing portion 22 provided in the sleeve member 20 is composed of a pair of bearing pieces 23, which engage with the shaft portion 32 in alternate directions. However, the present invention is not limited to such a configuration, and the pair of bearing pieces 23 may engage with the shaft portion 32 in the same direction. In this case, the direction in which the pair of bearing pieces 23 engage with the shaft portion 32 may be inward or outward. Furthermore, the bearing portion 22 may be formed integrally with the shaft portion 32 and have approximately the same length.

[0071] (2) In the above embodiment, the bearing portion 22 provided on the sleeve member 20 is formed in a hook shape. However, the present invention is not limited to such a configuration, and the bearing portion 22 may be formed of, for example, a pair of support plates having through holes.

[0072] (3) In the above embodiment, an example has been described in which the shaft portion 32 is provided on the flange member 30, and the bearing portion 22 that slidably holds the shaft portion 32 is provided on the sleeve member 20. However, the present invention is not limited to such a configuration, and for example, a shaft portion that is aligned along the tangential direction of the through hole 6H may be provided on the sleeve member 20, and a bearing portion that slidably holds the shaft portion may be provided on the flange member 30.

[0073] (4) In the above embodiment, an example has been described in which the pressure receiving portion 40 is configured by engagement between the engaging claw 34A formed on the arm portion 34 of the flange member 30 and the engaging claw 24A formed on the arm insertion portion 24 of the sleeve member 20. However, the present invention is not limited to such a configuration, and the pressure receiving portion 40 may be configured, for example, by direct engagement between the engaging claw 34A of the arm portion 34 and the arm insertion portion 24. In addition, the pressure receiving portion 40 may be configured, for example, by engagement between the tip of the arm portion 34 and the upper end of the main body portion 21 of the sleeve member 20. Alternatively, the pressure receiving portion 40 does not necessarily have to be provided.

[0074] (5) In the above embodiment, the retaining piece 35 is provided so as to extend outward from the arc-shaped arm portion 34. However, the present invention is not limited to such a configuration, and the retaining piece 35 may be provided so as to extend inward from the arc-shaped arm portion 34 (toward the imaginary center of the arc-shaped arm portion 34).

[0075] (6) In the above embodiment, the pair of arms 34 are formed to be slightly inclined so that the distance D1 on the tip end side is slightly narrower than the distance D2 on the base end side. However, the present invention is not limited to such a configuration, and the pair of arms 34 may be formed, for example, so that the entire pair of arms 34 are parallel (the distance D1 on the tip end side is equal to the distance D2 on the base end side).

[0076] (7) In the above embodiment, an example has been described in which the two arm insertion portions 24 are provided at positions that are 180° out of phase with each other on the main body portion 21, and the two arm portions 34 are provided at positions that are 180° out of phase with each other on the flange portion 31. However, the present invention is not limited to such a configuration, and it is sufficient that the two sets of arm insertion portions 24 and the arm portions 34 inserted therein are provided at circumferential positions that are symmetrical with respect to the connection portion between the sleeve member 20 and the flange member 30.

[0077] (8) In the above embodiment, a configuration has been described as an example in which the pressure receiving portion 40 having the arm portion 34 and the arm insertion portion 24 is provided as a supplementary function for the angle-adjustable connection between the sleeve member 20 and the flange member 30. However, the present invention is not limited to such a configuration, and for example, a bellows mechanism may be provided instead of the pair of the arm portion 34 and the arm insertion portion 24. It is preferable that the bellows mechanism functions as the pressure receiving portion 40, but it is not essential that the bellows mechanism is unable to perform this function.

[0078] (9) In the above embodiment, the main body 21 of the sleeve member 20 and the flange 31 of the flange member 30 are each formed to have a shape in which a part in the circumferential direction (a range in which the central angle is approximately 120°) is missing. However, the present invention is not limited to such a configuration, and the missing part may be smaller (in other words, the central angle of the missing part may be greater than 120° and less than 180°) as long as it can be at least later attached to the elongated body 7 inserted into the through hole 6H. In addition, the main body 21 and the flange 31 may each be formed over the entire circumference and then cut at one point in the circumferential direction.

[0079] (10) In the above embodiment, the description has been given mainly assuming a configuration in which the sleeve member 20 and the flange member 30 are separate bodies. However, the present invention is not limited to such a configuration, and the sleeve member 20 and the flange member 30 may be integrally configured, provided that the angle is adjustable. In this case, the angle can be adjusted by, for example, forming the connecting portion between the sleeve member 20 and the flange member 30 thin.

[0080] (11) In the above embodiment, the gap filling member is constituted by the bagged refractory member 50, and the bagged refractory member 50 is mainly constituted by the paste-like first thermally expandable refractory material 54 contained in the bag body 51, and various accessory components are added to the outer surface. However, the present invention is not limited to such a configuration, and for example, the bagged refractory member 50 may not be provided with one or more of the metal thin film sheet 55, the second thermally expandable refractory material 56, the holding base material 57, and the cushion material 58. The bagged refractory member 50 may be constituted only by the bag body 51 and the paste-like first thermally expandable refractory material 54 contained therein. In addition, as the gap filling material, for example, a material having a bag body and a fiber material (for example, inorganic fiber material such as rock wool, ceramic wool, and glass wool) contained in the bag body may be used. Any material may be used as the gap filling material as long as it can fill the gap space S between the through hole 6H and the long body 7 inserted into the through hole 6H.

[0081] (12) In the above embodiment, it has been mainly assumed that the sleeve member 20 and the flange member 30 are initially closed when a fire prevention measure is implemented using the gap blockage unit 1. However, the present invention is not limited to such a configuration, and the work may be started with the sleeve member 20 and the flange member 30 previously opened to an angle close to the inclination angle of the through hole 6H.

[0082] (13) In the above embodiment, the gap blockage unit 1 is described as being used to block the gap S between a through hole 6H formed obliquely in the partition 6 and the elongated body 7 inserted into the through hole 6H. However, the gap blockage unit 1 is not limited to such a configuration, and can be used in the same way to block the gap S between a through hole 6H formed perpendicularly in the partition 6 and the elongated body 7 inserted into the through hole 6H.

[0083] (14) The configurations disclosed in the above-mentioned embodiments (including the above-mentioned embodiments and other embodiments; the same applies below) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. As for other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be appropriately modified within the scope of the present disclosure. [Explanation of symbols]

[0084] 1 Gap Closure Unit 6 Partitions 6H through hole 7 Long body 20 Sleeve member 22 Bearing section 23 Bearing piece 24 Arm insertion part 24A Engagement claw 30 Flange member 31 Flange 32 Shaft 34 Arm section 34A Engagement claw 35 Retaining piece 40 Pressure receiving part 50 Bagged fireproof materials (gap filling materials) S Gap space D1 Distance between the ends of the arms D2 Distance between base ends of arms

Claims

1. A gap closing unit for closing a gap space between a through hole formed in a partition body of a building and an elongated body inserted into the through hole, a sleeve member that is attached to the elongated body and inserted into the through hole; a flange member fixed to the partition around the through hole; a gap filling member connected to the sleeve member; Equipped with The flange member extends along the circumferential direction of the sleeve member and is connected to the sleeve member so as to be angle adjustable.

2. A gap blocking unit as described in claim 1, wherein the sleeve member and the flange member are integrally formed.

3. A gap blocking unit as described in Claim 2, wherein the boundary portion between the sleeve member and the flange member is formed thin.

4. The flange member has a flange portion and an arm portion extending in an arc shape from the flange portion, The gap blockage unit according to claim 1 , wherein the sleeve member has a main body portion and an arm insertion portion that is provided on the main body portion and through which the arm portion is inserted.

5. A gap blocking unit as described in Claim 4, wherein a stopper piece is provided at the tip of the arm portion to prevent the arm from coming out of the arm insertion portion.

6. A gap blocking unit as described in Claim 5, wherein the anti-detachment piece is arranged to extend outward from the arc-shaped arm portion.

7. A pair of the arm portions are provided opposite each other at a predetermined interval, The gap blockage unit according to claim 4 , wherein a distance between the distal end portions of the pair of arms is narrower than a distance between the proximal end portions of the pair of arms.

8. A pressure receiving portion is provided which receives a pressing force against the sleeve member within the through hole at a position different from the connecting portion between the flange member and the sleeve member, The gap blockage unit according to any one of claims 4 to 6, wherein an engaging claw is formed on the arm portion, and the pressure receiving portion is formed by engagement between the engaging claw and the arm insertion portion.

9. A gap blocking unit as described in Claim 8, wherein a plurality of the engaging claws are formed intermittently on the arm portion.

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