Thermally expandable refractory moldings

Abstract

To improve workability when a thermally expandable refractory molding to be inserted into a gap of a building member is inserted into the gap.SOLUTION: An aspect of the present disclosure is a thermally expandable refractory molding inserted into a gap in a building member. A thermally expandable refractory molding product is provided with a cylindrical part and a resistance part. The cylindrical part is formed in a cylindrical shape with a hollow inside. The resistance part is composed of a first resistance part formed so as not to block a cross-section in an intersecting direction intersecting a height direction of the cylindrical part, and a second resistance part formed so as to block a cross section in the intersecting direction intersecting the height direction of the cylindrical part, and is configured to resist deformation when the cylindrical part is deformed by an external force.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a thermally expandable fire-resistant molding that is inserted into gaps in building components. [Background technology]

[0002] For example, Patent Document 1 below discloses a heat-expandable fire-resistant molded body that is inserted into gaps between building components such as fire-resistant boards. The heat-expandable fire-resistant molded body expands due to heat during a fire, and acts to prevent the gaps between the fire-resistant boards, which contract due to heat, from expanding, thereby suppressing the spread of fire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-009428 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the gaps between building components may not be uniform because the building components are placed on-site, resulting in variations in the accuracy of the work. For example, when the gaps between building components are narrower than the planned dimensions, it has been found that inserting the heat-expandable fire-resistant molding into the gaps between the building components is difficult.

[0005] One aspect of the present disclosure is to improve the workability when inserting a thermally expandable fireproof formed body into a gap between building components. [Means for solving the problem]

[0006] One aspect of the present disclosure is a heat-expandable fire-resistant molding to be inserted into gaps in building components. The heat-expandable fire-resistant molding includes a tubular portion and a resistance portion. The tubular portion is configured in a cylindrical shape with a hollow portion inside. The resistance portion includes a first resistance portion formed so as not to block a cross section of the tubular portion in a transverse direction intersecting the height direction, and a second resistance portion formed so as to block a cross section of the tubular portion in the transverse direction intersecting the height direction, and provides resistance to deformation when the tubular portion is deformed by an external force.

[0007] With this configuration, the cylindrical portion can be configured to deform more easily than a configuration without a hollow portion, thereby improving the ease of insertion into gaps in building components. Furthermore, the hollow portion of the cylindrical portion allows heat from a flame or the like to be easily transferred to the cylindrical portion. Furthermore, because the resistance portion acts as a resistance to deformation of the cylindrical portion, the repulsive force against deformation of the cylindrical portion can be increased, improving the stability of the attachment and retention of the heat-expandable fire-resistant molding.

[0008] In one aspect of the present disclosure, the first resistor may be configured to partition at least a portion of the hollow portion. With this configuration, the stability of the attachment and retention of the heat-expandable fire-resistant molded body can be improved.

[0009] In one aspect of the present disclosure, the first resistor may have both ends connected to the cylindrical portion, thereby dividing the hollow portion into a plurality of portions. With this configuration, both ends of the first resistor are connected to the cylindrical portion, which increases the repulsive force against deformation of the cylindrical portion, thereby further improving the stability of the attachment and retention of the heat-expandable fire-resistant molding.

[0010] In one aspect of the present disclosure, a plurality of first resistor portions may be provided, and the plurality of first resistor portions may be connected to intersect at the hollow portion. According to this configuration, the plurality of first resistors are connected so as to intersect in the hollow portion, and therefore the durability of the cylindrical portion against deformation can be improved.

[0011] In one aspect of the present disclosure, the cylindrical portion may further include a protruding portion that protrudes more radially outward than other portions of the outer circumferential surface. With this configuration, the protruding portion can locally press the cylindrical portion when it comes into contact with the building component, which makes the cylindrical portion more likely to deform as the protruding portion presses against it, thereby improving the stability of the attachment and retention.

[0012] In one aspect of the present disclosure, the protruding portion may be configured in a band shape with the direction extending along the outer peripheral surface of the tubular portion as the longitudinal direction, and configured so that W≧T, where the direction perpendicular to the longitudinal direction is the width direction, the direction protruding from the outer peripheral surface of the tubular portion is the thickness direction, and the length of the protruding portion in the thickness direction is T and the length of the protruding portion in the width direction is W.

[0013] With this configuration, deformation of the protruding portion is suppressed, and the cylindrical portion can be made to have a shape that is easy to deform, making it easier to obtain the holding force necessary to attach and hold the heat-expandable fire-resistant molded body.

[0014] In one aspect of the present disclosure, the protrusion may be configured in an endless annular shape that surrounds the hollow portion. With this configuration, the protruding portion can easily deform the cylindrical portion toward the hollow portion, thereby making it easier to obtain a holding force for attaching and holding the heat-expandable fire-resistant molded body.

[0015] In one aspect of the present disclosure, the first resistor may be configured to extend from the second resistor to an end of the cylindrical portion. With this configuration, the resistance portion can increase the rigidity of the cylindrical portion, thereby improving the stability of the attachment and retention of the heat-expandable fire-resistant molded article. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view showing the overall configuration of a thermally expandable fire-resistant molded body. [Figure 2] FIG. 2 is a virtual exploded view of a thermally expandable fire-resistant molded body. [Figure 3]FIG. 2 is a plan view of the heat-expandable fire-resistant molded body. [Figure 4] FIG. 2 is an enlarged view of the vicinity of a protruding portion of the heat-expandable fire-resistant molded body. [Figure 5] FIG. 2 is a plan view showing the state after the heat-expandable fire-resistant molding is inserted into a building component. [Figure 6] FIG. 2 is a cross-sectional view showing the state of the heat-expandable fire-resistant molding before it is inserted into a building component. [Figure 7] 7 is a cross-sectional view taken along the line VII-VII in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of one aspect of the present disclosure will be described with reference to the drawings. [1. Embodiment] [1-1.Configuration] A thermally expandable fireproof molded body 1 according to one embodiment of the present disclosure is a product that is used in buildings such as houses by being inserted into gaps 22 (see, for example, FIG. 6 ) between building components 21 such as fireproof boards. The thermally expandable fireproof molded body 1 expands due to heat during a fire or the like, and acts to close the gaps 22 between the building components 21, thereby suppressing the propagation of flames through the gaps 22 between the building components 21 and ultimately suppressing the spread of the fire.

[0018] As shown in FIG. 1 , the heat-expandable fire-resistant molded body 1 includes a tubular portion 11, a first resistance portion 12, and a second resistance portion 32. The first resistance portion 12 and the second resistance portion 32 correspond to the resistance portion in this disclosure. The first resistance portion 12 includes a plurality of first resistance portions 12A, 12B, 12C, and 12D. The heat-expandable fire-resistant molded body 1 may include a protruding portion 14. The heat-expandable fire-resistant molded body 1 includes the tubular portion 11, the plurality of first resistance portions 12A, 12B, 12C, and 12D, the second resistance portion 32, and the protruding portion 14, which are integrally formed.

[0019] The cylindrical portion 11 is a portion that constitutes the outer peripheral portion of the heat-expandable fire-resistant molded body 1. The cylindrical portion 11 is configured to have a cylindrical shape with an outer shape that is approximately cubic. The cylindrical portion 11 has a plurality of hollow portions 13 inside, each having a rectangular cross section. The outer shape of the cylindrical portion 11 may be other than rectangular, and it is preferable that the cylindrical portion 11 has an outer shape that approximately matches the shape of the gap 22.

[0020] The plurality of hollow portions 13 are each formed inside the cylindrical portion 11. The plurality of hollow portions 13 are spaces extending from at least one of the upper and lower surfaces of the heat-expandable fireproof molded body 1 toward the inside of the heat-expandable fireproof molded body 1. In Fig. 1, the hollow portions 13 are formed upward from the second resistance portion 32, and the upper surface of the heat-expandable fireproof molded body 1 is open.

[0021] The heat-expandable fireproof molding 1 may be open not only on the upper surface, but also on the upper and lower surfaces, or only on the lower surface. If only the lower surface is open, the heat-expandable fireproof molding 1 will have an upside-down shape, but such a shape is also acceptable. The direction connecting the surface of the tubular portion 11 where the opening is formed and the surface opposite to that surface is referred to as the height direction. The direction surrounding the hollow portion 13 is referred to as the circumferential direction, and the direction protruding from the outer peripheral surface of the tubular portion 11 is referred to as the thickness direction. The direction along an imaginary plane including the circumferential direction and the thickness direction is referred to as the intersecting direction.

[0022] Hereinafter, the plurality of first resistor portions 12A, 12B, 12C, and 12D will also be collectively referred to as first resistor portions 12. In this embodiment, four of the plurality of first resistor portions 12A, 12B, 12C, and 12D are provided, but it is sufficient that at least one or more of them is provided.

[0023] The first resistance portion 12 is a portion configured to resist deformation when the tubular portion 11 is deformed by an external force. The first resistance portion 12 is arranged to improve the stability of the attachment and retention of the thermally expandable fireproof molded body 1.

[0024] The stability of attachment and retention refers to the degree to which the heat-expandable fireproof molding 1 is unlikely to fall off from the building component 21 after being inserted into the gap 22 of the building component 21. Specifically, a higher stability of attachment and retention indicates that the heat-expandable fireproof molding 1 is firmly held to the building component 21 and is unlikely to fall off from the building component 21.

[0025] The multiple first resistors 12A, 12B, 12C, and 12D are connected at the center of the hollow portion 13 that constitutes the cylindrical portion 11. In other words, the multiple first resistors 12A, 12B, 12C, and 12D are connected so as to intersect at the center of the internal space of the cylindrical portion 11.

[0026] In one embodiment of the present disclosure, in a plan view, both ends of the first resistor 12 are connected to the cylindrical portion 11. In the left-right direction in Fig. 3, these both ends refer to end 12E of the left first resistor 12A that is connected to the cylindrical portion 11, and end 12G of the right first resistor 12C that is connected to the cylindrical portion 11. In addition, in the up-down direction in Fig. 3, these both ends refer to end 12F of the lower first resistor 12B that is connected to the cylindrical portion 11, and end 12H of the upper first resistor 12D that is connected to the cylindrical portion 11.

[0027] Such first resistance portions 12 are configured to divide the internal space formed only by the cylindrical portion 11 into a plurality of hollow portions 13. Note that the plan view is a line of sight when the heat-expandable fireproof molded body 1 is viewed from above in the height direction as shown in Fig. 3. In this embodiment, the hollow portion 13 is divided into four regions by the four first resistance portions 12A, 12B, 12C, and 12D.

[0028] With this configuration, the multiple first resistors 12A, 12B, 12C, and 12D are configured to partition at least a portion of the hollow portion 13. Each divided hollow portion 13 is configured to extend in the height direction. The multiple first resistors 12 are configured to extend from the opening 11B (the upper end 13A shown in FIG. 6, i.e., the upper end of the hollow portion 13 in FIG. 1) to the second resistor 32. In other words, the multiple first resistors 12 are formed in the tubular portion 11 so as not to block the cross section in the intersecting direction. More specifically, the multiple first resistors 12 are formed so that a hollow portion 13 exists between the multiple first resistors 12 and the tubular portion 11 when the tubular portion 11 and the multiple first resistors 12 are cut in any intersecting direction.

[0029] As shown in FIG. 2, the second resistor 32 is connected to the lower ends of the plurality of first resistors 12. The second resistor 32 is disposed on the lower surface side of the heat-expandable fire-resistant molded body 1 (the lower end 13B side shown in FIG. 6). The lower surface of the second resistor 32 in the height direction is configured to coincide with the lower surface of the heat-expandable fire-resistant molded body 1. In other words, the second resistor 32 is formed so as to close the cross section of the tubular portion 11 in the intersecting direction. More specifically, the second resistor 32 is formed so that no hollow portion 13 exists between the second resistor 32 and the tubular portion 11 when the tubular portion 11 and the second resistor 32 are cut in any intersecting direction. 2, the resistors (the plurality of first resistors 12 and the second resistor 32) are shown separated from the cylindrical portion 11 to clarify the structure of the resistors, but this does not imply that the resistors and the cylindrical portion 11 are separated during or after manufacturing. The resistors and the cylindrical portion 11 may be manufactured and used as a single unit.

[0030] 4, the protruding portion 14 is a portion of the outer peripheral surface of the cylindrical portion 11 that protrudes outward from the normal portion 11A. The normal portion 11A is a portion that constitutes the cubic outer shape of the cylindrical portion 11. In other words, the normal portion 11A is a portion of the outer peripheral surface of the cylindrical portion 11 where the length of the periphery surrounding the hollow portion 13 is uniform.

[0031] More specifically, the normal portion 11A is the portion of the outer peripheral surface of the cylindrical portion 11 that surrounds the hollow portion 13, other than the area where the protrusion 14 is disposed. On the other hand, the protrusion 14 is a portion of the outer peripheral surface of the cylindrical portion 11 where the length of the periphery surrounding the hollow portion 13 is not uniform, and the length of the periphery changes with the change in position in the height direction.

[0032] As shown in FIG. 1 , the protrusion 14 is configured as an endless ring extending in one direction so as to surround the entire circumference of the hollow portion 13, in other words, as a strip extending along the circumferential direction. The direction in which the protrusion 14 extends is also referred to as the longitudinal direction, and the direction perpendicular to the longitudinal direction (for example, the height direction in this embodiment) is also referred to as the width direction. The protrusion 14 is configured so that the outer periphery length gradually changes from the upper end to the lower end in the height direction. With this configuration, compared to when the outer periphery length of the protrusion 14 changes abruptly, the thermally expandable fireproof molding 1 is less likely to get caught on the building component 21 when inserted into the gap 22 in the building component 21.

[0033] 4, the thickness direction length of the protrusion 14 is defined as T, and the height direction length, i.e., the width direction length of the protrusion 14 is defined as W. The protrusion 14 is configured so that the width direction length W is equal to or greater than the thickness direction length T, in order to easily obtain the holding force required for mounting and holding the thermally expandable fireproof molding 1. In this embodiment, the thickness direction length T of the protrusion 14 indicates the maximum length in the thickness direction.

[0034] [1-2. Usage example] 5 to 7, the heat-expandable fireproof molding 1 is placed in a building component 21 configured as a wooden plate member, for example. Gaps 22 serving as holes are formed in the building component 21, and the heat-expandable fireproof molding 1 is inserted into the gaps 22 for use. The heat-expandable fireproof molding 1 is not limited to wooden plate members, and can be applied to any building component 21 such as wood other than plate members, fireproof boards, metal members, etc.

[0035] The heat-expandable fireproof molded body 1 is preferably configured so that the outer periphery of the normal portion 11A is slightly smaller than the inner periphery of the gap 22 and the outer periphery of the protruding portion 14 is slightly larger than the inner periphery of the gap 22.

[0036] In this configuration, as shown in Fig. 6, the protruding portion 14 of the heat-expandable fireproof molding 1 is press-fitted into the gap 22. Then, as shown in Fig. 7, the protruding portion 14 is pressed along the inner periphery of the gap 22 and deformed, generating a repulsive force as indicated by the arrow in Fig. 5. This repulsive force allows the heat-expandable fireproof molding 1 to be well held in the gap 22 of the building member 21.

[0037] Furthermore, due to variations in work precision, gap 22 in building component 21 may be slightly narrower than the planned size, and the outer periphery of regular portion 11A may be slightly larger than the inner periphery of gap 22. In this case, since heat-expandable fireproof molded body 1 has hollow portion 13, regular portion 11A can be pressed into gap 22 to match the size of gap 22 while deforming tubular portion 11 so as to narrow hollow portion 13.

[0038] When the heat-expandable fireproof molded body 1 is heated by a flame or the like, the cylindrical portion 11, the first resistance portion 12, and the second resistance portion 32 expand to close the hollow portion 13. Even when the gap 22 expands due to heating of the building component 21, the heat-expandable fireproof molded body 1 expands to fill the expanding gap 22. As a result, the spread of the flame through the gap 22 can be suppressed.

[0039] [1-3. Manufacturing method and composition] The production method and composition of the thermally expandable fireproof molded body 1 will be exemplified. The heat-expandable fire-resistant molded body 1 can be manufactured by, for example, injection vulcanization molding. The heat-expandable fire-resistant molded body 1 can be configured as a general heat-expandable fire-resistant molded body made from materials such as a rubber material, a vulcanizing agent, a flame retardant, a heat-expandable material, and a filler.

[0040] Examples of rubber-based materials that can be used include isoprene rubber (IR), styrene-butadiene rubber (SBR), butadiene rubber (BR), chloroprene rubber (CR), acrylonitrile-butadiene rubber (NBR), ethylene-propylene rubber (EPM), and ethylene-propylene-diene rubber (EPDM).

[0041] As the vulcanizing agent, for example, organic peroxides, sulfur-based vulcanizing agents, zinc oxide, magnesium oxide, thiazole-based materials, sulfenamide-based materials, etc. can be used. As the flame retardant, for example, a bromine-based flame retardant, a phosphorus-based flame retardant, a chlorine-based flame retardant, an inorganic flame retardant, or the like can be used.

[0042] The thermally expandable material may be thermally expandable graphite, melamine compounds, etc. The filler may be heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate, light calcium carbonate, clay, talc, titanium oxide, bentonite, etc.

[0043] [1-4.Effects] According to the embodiment described above in detail, the following effects are achieved. (1a) One aspect of this embodiment is a heat-expandable fireproof molding 1 to be inserted into a gap 22 in a building component 21. The heat-expandable fireproof molding 1 includes a tubular portion 11, a first resistance portion 12, and a second resistance portion 32. The tubular portion 11 is configured to have a cylindrical shape with a hollow portion 13 inside. The first resistance portion 12 is formed so as not to block a cross section of the tubular portion 11 in a direction intersecting the height direction. The second resistance portion 32 is formed so as to block a cross section of the tubular portion 11 in the cross direction. The first resistance portion 12 and the second resistance portion 32 are configured to provide resistance to deformation when the tubular portion 11 is deformed by an external force.

[0044] With this configuration, the tubular portion 11 can be configured to deform more easily than a configuration without the hollow portion 13, thereby improving the ease of insertion into the gap 22 of the building component 21. Furthermore, the hollow portion 13 of the tubular portion 11 makes it easier for heat from a flame or the like to be transmitted through the hollow portion 13 to the entire tubular portion 11. Furthermore, because the first resistance portion 12 and the second resistance portion 32 act as resistance to the deformation of the tubular portion 11, the repulsive force against the deformation of the tubular portion 11 can be increased, and the stability of the attachment and retention of the heat-expandable fireproof molded body 1 can be improved.

[0045] (1b) In one aspect of this embodiment, the first resistor 12 is configured to partition at least a portion of the hollow portion 13. With this configuration, the first resistance portion 12 can reinforce the tubular portion 11 by partitioning part of the hollow portion 13, thereby improving the stability of the attachment and retention of the heat-expandable fire-resistant molded body 1.

[0046] (1c) In one aspect of this embodiment, the first resistor 12 is configured so that both ends thereof are connected to the cylindrical portion 11, thereby dividing the hollow portion 13 into a plurality of portions. According to this configuration, both ends of the first resistance portion 12 are connected to the cylindrical portion 11, which can more firmly reinforce the cylindrical portion 11. Therefore, the repulsive force against deformation of the cylindrical portion 11 can be increased, and the stability of the attachment and retention of the thermally expandable fireproof molded body 1 can be further improved.

[0047] (1d) In one aspect of the present embodiment, a plurality of first resistor portions 12 are provided. The plurality of first resistor portions 12 are connected to intersect at the hollow portion 13. With this configuration, the plurality of first resistor portions 12 are connected to intersect at the hollow portion 13, thereby improving the durability of the tubular portion 11 against deformation.

[0048] (1e) In one aspect of this embodiment, the cylindrical portion 11 further includes a protruding portion 14 that protrudes outward more than other portions of the outer circumferential surface. With this configuration, the protruding portion 14 comes into contact with the building component 21, thereby locally pressing the cylindrical portion 11. At this time, the protruding portion 14 is pressed, making the cylindrical portion 11 more likely to deform, thereby improving the stability of the attachment and retention.

[0049] (1f) In one aspect of this embodiment, the protrusion 14 is configured in a band shape extending along the circumferential direction, and is configured so that the "width direction length W" is equal to or greater than the "thickness direction length T". With this configuration, deformation of the protrusion 14 is suppressed, the tubular portion 11 can be made to have a shape that is easy to deform, and it is easier to obtain the holding force for attaching and holding the heat-expandable fire-resistant molded body 1.

[0050] (1g) In one aspect of this embodiment, the protrusion 14 is configured in an endless ring shape that surrounds the hollow portion 13. With this configuration, the protrusion 14 can easily deform the tubular portion 11 toward the hollow portion 13. Therefore, it is possible to easily obtain a holding force for mounting and holding the heat-expandable fireproof molded body 1.

[0051] (1h) In one embodiment of the present disclosure, the first resistor 12 is configured to extend from the second resistor 32 to the end of the cylindrical portion 11. According to this configuration, the rigidity of the cylindrical portion 11 can be increased by the first resistance portion 12. Therefore, the stability of the attachment and holding of the thermally expandable fireproof formed body 1 can be improved.

[0052] 2. Other Embodiments Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modified forms.

[0053] (2a) In the above embodiment, the protrusion 14 is configured in an endless annular shape along the circumferential direction perpendicular to the height direction so as to surround the hollow portion 13, but this is not limited to this. For example, the protrusion 14 does not need to surround the entire circumference of the hollow portion 13, and may be configured to surround at least a portion of it. Further, the protruding portion 14 may be formed in a strip shape along the height direction. Further, the protruding portion 14 may be formed in a strip shape and spirally so as to surround the hollow portion 13 in multiple layers.

[0054] (2b) In the above embodiment, the protruding portion 14 is configured such that the length W in the width direction is greater than or equal to the length T in the thickness direction, but it is not limited to this configuration. For example, the protruding portion 14 may be configured such that W < T. Further, the protruding portion 14 is not limited to a strip shape and may have any shape such as a dot shape.

[0055] (2c) In the above embodiment, the thermally expandable refractory formed body 1 includes the protruding portion 14, but it may not include the protruding portion 14. In this case, it is preferable that the dimensions are set such that the normal portion 11A is press-fitted into the gap 22.

[0056] (2d) In the above embodiment, the plurality of first resistance portions 12A, 12B, 12C, 12D are connected so as to intersect in the hollow portion 13 that constitutes the cylindrical portion 11, but it is not limited to this configuration. For example, the plurality of first resistance portions 12A, 12B, 12C, 12D may be arranged so as not to intersect, such as being arranged parallel to each other.

[0057] (2e) The first resistance portion 12 is configured such that both ends are connected to the inner surface of the cylindrical portion 11 and it extends from the second resistance portion 32 to the end of the cylindrical portion 11 in a plan view, but it is not limited to this configuration. For example, in a plan view, only one side portion of the first resistance portion 12 may be connected to the inner surface of the cylindrical portion 11. Further, the first resistance portion 12 may be arranged at least partially in the height direction of the cylindrical portion 11.

[0058] [[ID=第十九]] (2f) The first resistance portion 12 may be configured as a rib protruding from the inner surface of the cylindrical portion 11. That is, the first resistance portion 12 can adopt any shape that can resist the deformation of the cylindrical portion 11.

[0059] (2g) While the second resistor 32 is configured at the end of the cylindrical portion 11, this configuration is not limiting. The second resistor 32 may be configured in an intermediate portion of the cylindrical portion 11 in the height direction, for example, in the center. In the above embodiment, the second resistor 32 is disposed along an intersecting direction perpendicular to the height direction, but this configuration is not limiting. For example, the second resistor 32 may be formed in a direction intersecting the height direction, and may be formed so that a portion or all of the second resistor 32 is inclined in the height direction. In other words, the second resistor 32 may be formed along a direction perpendicular to the height direction and along a plane that does not coincide with the height direction. In other words, the intersecting direction may be any direction that does not coincide with the direction perpendicular to the height direction and does not coincide with the height direction.

[0060] (2h) The number of first resistor portions 12, second resistor portions 32, and protrusions 14 may be one or more, and any number can be used. When multiple protrusions 14 are provided, the multiple protrusions 14 may be configured as strips extending parallel to one direction, or may be configured to extend in multiple different non-parallel directions. Furthermore, each protrusion 14 may branch in multiple directions or bend in a direction different from one direction.

[0061] (2i) The cross-sectional shape of the outer periphery and inner periphery of the cylindrical portion 11 is not limited to a rectangle, and any shape such as a polygon, circle, ellipse, etc. may be adopted. Furthermore, the shapes of the outer periphery and inner periphery of the cylindrical portion 11 do not need to be the same, and any shapes different from each other may be adopted.

[0062] (2j) In the above embodiment, the cylindrical portion 11 is configured to have a substantially cubic shape, but is not limited to this configuration. For example, the cylindrical portion 11 may be configured so that the length in the perpendicular direction perpendicular to the height direction is longer than the height direction, or the height direction may be longer than the perpendicular direction.

[0063] (2k) Multiple functions of one component in the above embodiments may be realized by multiple components, or one function of one component may be realized by multiple components. Also, multiple functions of multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Also, part of the configuration of the above embodiments may be omitted. Also, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0064] (21) In addition to the above-described heat-expandable fire-resistant molded body 1, the present disclosure can also be realized in various forms, such as a system including the heat-expandable fire-resistant molded body 1 as a component. [Explanation of symbols]

[0065] 1...thermally expandable fireproof molded body, 11...cylindrical portion, 11A...normal portion, 12, 12A to 12D...first resistance portion, 32...second resistance portion, 13...hollow portion, 14...protruding portion, 21...building component, 22...gap.

Claims

1. A thermally expandable fireproof molding to be inserted into gaps in building components, a cylindrical portion having a hollow portion therein; a resistance portion connected to the cylindrical portion at the hollow portion and configured to resist deformation of the cylindrical portion when the cylindrical portion is deformed by an external force; Equipped with The resistor portion is a first resistance portion formed so as not to block a cross section of the cylindrical portion in a direction intersecting the height direction of the cylindrical portion; a second resistance portion formed to close a cross section of the cylindrical portion in a direction intersecting the height direction; and the cylindrical portion includes a protruding portion that protrudes outward more than other portions of the outer circumferential surface, The protrusion is configured as an endless ring surrounding the hollow portion, and the heat-expandable fire-resistant molding.

2. A thermally expandable fireproof molding to be inserted into gaps in building components, a cylindrical portion having a hollow portion therein; a resistance portion connected to the cylindrical portion at the hollow portion and configured to resist deformation of the cylindrical portion when the cylindrical portion is deformed by an external force; Equipped with The resistor portion is a first resistance portion formed so as not to block a cross section of the cylindrical portion in a direction intersecting the height direction of the cylindrical portion; a second resistance portion formed to close a cross section of the cylindrical portion in a direction intersecting the height direction; and The hollow portion is configured to extend from the second resistance portion to at least one end of the tubular portion in the axial direction.

3. The thermally expandable fire-resistant molded body according to claim 2, The cylindrical portion includes a protruding portion that protrudes outward from other portions of the outer circumferential surface, The heat-expandable fire-resistant molded body further comprises:

4. The thermally expandable fire-resistant molded body according to claim 3, The protruding portion is configured in an endless annular shape so as to surround the hollow portion. The thermally expandable fire-resistant molded body is configured as follows.

5. The thermally expandable fire-resistant molded body according to any one of claims 1, 3, and 4, The protruding portion is configured in a band shape with a longitudinal direction extending along an outer circumferential surface of the cylindrical portion, The direction perpendicular to the longitudinal direction is defined as a width direction, the direction protruding from the outer peripheral surface of the cylindrical portion is defined as a thickness direction, and the length of the protruding portion in the thickness direction is defined as T and the length of the protruding portion in the width direction is defined as W. The protrusion has a width W≧T. The thermally expandable fire-resistant molded body is configured as follows.

6. The thermally expandable fire-resistant molded body according to any one of claims 1 to 5, The first resistor partitions at least a portion of the hollow space. The thermally expandable fire-resistant molded body is configured as follows.

7. The heat-expandable fire-resistant molded body according to any one of claims 1 to 6, The first resistor has both ends connected to the cylindrical portion, thereby dividing the hollow portion into a plurality of portions. The thermally expandable fire-resistant molded body is configured as follows.

8. The thermally expandable fire-resistant molded body according to any one of claims 1 to 7, a plurality of the first resistor portions; The plurality of first resistor portions are connected to each other so as to intersect at the hollow portion. The thermally expandable fire-resistant molded body is configured as follows.

9. The thermally expandable fire-resistant molded body according to any one of claims 1 to 8, The first resistor portion extends from the second resistor portion to an end of the cylindrical portion. The thermally expandable fire-resistant molded body is configured as follows.

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