JP2008167550A - Structure for installing box or the like on fire resistant wall and refractory material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliable fire prevention function in case of fire or the like to exposed combustible members, of attachment tools, such as connectors, fixed on a box or the like inside a wall and flexible conduit tubes exposed or protruded from a wall. <P>SOLUTION: One end of a flexible conduit tube 40 is attached to the other end of a connector 20, and the other end is exposed or protruded from a second opening 5b in a fire resistant cavity wall 5. A refractory material 30 for box ends covers the entire exposed portion of the connector 20 in the space in a distributing box 210. A refractory material 410 for tube ends is filled in the gap between the exposed portion or protruded portion of the other end of the flexible conduit tube 40 and the second opening 5b in the opposite face 5B of the fire resistant cavity wall 5 so that the gap is closed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a box such as a wiring box or an end cover that is disposed inside a fire wall such as a fire wall, a fire floor wall, or a fire ceiling wall and connects ends of piping materials such as electric pipes that accommodate cables. A mounting accessory such as a connector fixed to the box, a piping material such as a flexible conduit connected to the mounting tool, and a refractory material. The present invention relates to a structure for arranging boxes on a fireproof wall and a fireproof material for improving fire resistance in an exposed portion of a fitting, a protruding portion from a wall through-hole of a flexible piping material, and the like.

In general, for walls such as concrete walls and concrete slabs (ceiling or floor), fire-resistant hollow walls such as lightweight steel partition walls and fire-resistant hollow slabs (ceiling or floor) (including floor walls and ceiling walls in addition to ordinary walls) Are fixed in a state where boxes such as a wiring box, a switch box, and an end cover are embedded or disposed inside a wall in a portion that becomes a wiring terminal or piping terminal such as an outlet or a switch after construction. The boxes have a pipe connection port, and a connector as a wiring / pipe accessory is attached and fixed to the pipe connection port. Furthermore, the boxes have an opening communicating with the internal space, and are fixed inside the wall so that the opening faces an opening provided on the outer surface of the wall. And while connecting the end part of piping materials, such as a flexible electric wire tube, to the one end opening of the above-mentioned connector located in the outside of boxes etc. in the inside of a wall, it is an internal insertion member of wiring and piping material from the other end opening of a connector. An end portion of a cable or the like is taken out and exposed, and is electrically connected to a connection terminal or the like of an outlet attached to the opening of the wall. Here, since the piping material such as the flexible wire tube is usually formed of a combustible material such as a synthetic resin, a fire burns an outlet or the like attached to the opening of the wall in a fire or the like, and the box passes through the opening. If the flexible wire tube or the like is burned by entering the inside through a similar opening and reaching the flexible wire tube or the like, it may cause generation of toxic gas or the like. Therefore, conventionally, in such a case, a refractory material is provided in the connector connecting portion of the boxes.
Conventionally, as this type of technology, for example, there is a technology described in Patent Document 1.
JP 2003-301992 A

  In Patent Document 1, it is possible to easily fill a narrow portion of a connection portion between an end portion of a tubular body (flexible electric wire tube or the like) embedded in a concrete wall and an accessory such as a box, and the size of the tubular body. A refractory material capable of coping with changes in the environment is disclosed. This refractory material is a box (accessory) to prevent the conduit (embedded) embedded in the concrete wall or the cable (insertion member) inserted through it from spreading due to flame or the like. It is inserted and filled into the connection portion (connector) connected to the box from the opening side of the box. Further, the refractory material can be filled in the connection portion by adhesion to the inner surface of the connection portion or the outer surface of the cable, and a plurality of small pieces formed of a refractory material capable of preventing the fire spread by thermal expansion. The required number selected according to the size of the conduit is filled in the connecting portion. When the refractory material filled in the connection portion receives a flame and is heated to a predetermined temperature or higher, the refractory material foams in the connection portion to prevent the cable from spreading.

  Here, in the technique described in Patent Document 1, a connector as a connection portion is formed by inserting a connector body made of synthetic resin into a connector insertion hole in a side wall portion of the box and exposing a female screw portion at a tip portion inside the box. Then, a synthetic resin nut is screwed into the female screw on the outer peripheral surface of the female screw portion in the box, so that the peripheral edge of the connector insertion hole of the box is sandwiched between the female screw base end of the connector body and the nut. Fixed to the box. In addition, the refractory material is filled inside the connector from the opening at the tip of the female screw portion of the connector (opening inside the box), and is held inside the connector by adhering to the inner surface of the connector or the outer surface of the cable in the connector. Is done. And when a connector receives a flame, the refractory material with which it fills in a connector and coat | covers a cable will foam, and will protect the said cable from a flame. On the other hand, since the refractory material exerts a fire-proof function for the cable inside the connector, the nut and female screw portion made of synthetic resin exposed in the box in the connector are not subject to fire-proof by the refractory material and are exposed to the flame. Will be. Therefore, in the technique of Patent Document 1, it is impossible to prevent the fire spreading of the nut and the female screw portion by the refractory material. As a result, the connector nut and female screw part, which are exposed parts in the box, are burned out by the flame, and the refractory material itself filled in the connector falls together with the female screw part etc. to be burned down, and the cable itself has a fireproof function. May not be able to demonstrate.

  In order to prevent such a situation, even if the female screw portion or the like is burned out, the refractory material is completely filled from the tip opening of the female screw portion of the connector to the depth (to the connector portion located outside the box) without any gaps. It is conceivable that the refractory material is held by the connector at the outer portion of the box. However, in this case as well, the nut, which is a member for fixing the connector body to the box, burns out, and the holding of the peripheral edge of the connector insertion hole of the box by the nut and the female screw base of the connector body is released, and the connector body itself May fall outside the box, and as a result, the refractory material may drop together with the connector body and fail to exhibit the fire protection function. Further, even when the outer peripheral surface on the proximal end side of the female screw portion of the connector main body is locked to the peripheral edge of the connector insertion hole of the box, and the connector main body is held by the box, the connector main body is connected to the connector insertion hole of the box. It is displaced or swung with respect to the connector insertion hole, and a flame advances from the gap to the outside of the box. Etc. may be caused.

  On the other hand, as described above, a flexible piping material such as a flexible conduit made of synthetic resin has one end connected to a connector of a box or the like and extends along the piping path in the wall, and the other end is a wall. It may be arranged to project outside from an opening provided on the other side. In this case, on one end side of the flexible piping material, fire resistance is achieved by a refractory material filled in the inside of the connector in the boxes, but the refractory material as in the technique of Patent Document 1 is used. When a flame occurs on the other end side of the flexible piping material (the other side surface side of the wall), the other end portion of the flexible piping material (the portion protruding from the opening on the other side surface of the wall) is burned, and the opening is After that, the flexible piping material inside the wall and the internal insertion member may be burned, which may cause generation of toxic gas and the like. That is, in the case of a refractory wall in which the piping path penetrates from the opening on one side of the wall to the opening on the other side, it is necessary to exhibit a fire resistance function against flames from both sides of the wall.

  Therefore, the present invention provides an exposed portion inside the box of an attachment such as a connector fixed to the box or the like, even when a flame enters the box such as a wiring box during a fire or the like. In addition to being able to exert a reliable fire-proof function on the outer flammable member and protecting the attachments attached to the boxes, it is possible to reliably prevent their loosening or falling off. Even in the case of a refractory wall in which the piping path penetrates from the opening on one side to the opening on the other side, the box to the refractory wall that can exert a fire resistance function against the flame from both sides of the wall It is an object to provide an arrangement structure and a refractory material.

  The arrangement structure of the boxes on the fireproof wall according to claim 1 is provided at a position separated from the first opening on one side surface or the other side surface of the wall from the first opening provided on one side surface of the wall. It is an arrangement structure of boxes to a fireproof wall having a piping path leading to the second opening inside. The arrangement structure of the boxes on the fire wall includes metal boxes, synthetic resin attachments, synthetic resin flexible piping materials, box end refractory materials, and piping ends. With refractory material for parts. The boxes are arranged inside the wall, and the opening is arranged at a position facing the first opening of the wall, and the through hole is arranged at a position corresponding to the inside of the wall. Further, the attachment tool is inserted through the through hole of the boxes, and is attached to the boxes with one end thereof being exposed to the internal space of the boxes. Furthermore, one end of the flexible piping material is attached to the other end portion of the attachment tool, and the other end is exposed or protruded from the second opening of the wall. The box-end refractory material covers the entire exposed portion of the attachment in the internal space of the boxes. Furthermore, the pipe-end refractory material is configured to block between the exposed portion or the protruding portion of the other end of the flexible piping material and the opening on the other side of the wall (such as the gap space). ).

  The fire wall usually has the first opening on one side surface (for example, the indoor side surface that is one side surface in the thickness direction of the partition wall) and the second opening on the other side surface (for example, the partition wall). The first opening and the second opening are provided on the same side surface (for example, one side surface in the thickness direction of the partition wall). It may be provided on a certain indoor side surface. In addition, the piping path from the first opening to the second opening is not limited to extending inside a single wall, but also includes a wall (narrowly defined wall), a ceiling wall (ceiling), and a floor wall (floor). The plurality of walls may extend inside each other. In this case, the first opening is provided on one side surface of the first wall (for example, the indoor side surface of the partition wall), and the second opening is provided on the other side surface of the second wall (for example, the ceiling continuous with the partition wall). It can also be provided on the side of the wall inside the room. For example, the first opening has a shape corresponding to the opening shape (rectangular shape, etc.) of the boxes, and has a slightly larger diameter shape (large diameter rectangular shape, etc.), and the second opening is a flexible pipe. The shape corresponds to the outer shape (circular shape, etc.) of the material, and has a slightly larger diameter shape (large diameter circular shape, etc.).

  In addition, the flexible piping material is attached to the other end portion (an end portion on the outside side of the boxes) of the attachment tool, one end of which is attached to the boxes, and the inside of the wall along the piping path. The other end portion is formed of a flexible electric wire tube that is exposed or protrudes from the second opening. For example, in the state where the tip of the other end of the flexible piping material is disposed in the second opening without protruding from the second opening of the wall, the outer peripheral surface and the wall of the other end of the flexible piping material It is also possible to fill the gap space between the inner periphery of the second opening with the refractory material for the pipe end, or the other end of the flexible pipe material is connected to the second opening of the wall. In the state of protruding from the outer peripheral surface of the other end of the flexible piping material (the outer peripheral surface of the second opening portion of the wall) and the inner space of the second opening of the wall, It can also be filled with a refractory material for pipe ends. That is, the flexible piping material has a state in which the other end portion does not completely protrude from the wall surface (for example, the tube end portion is disposed in the second opening of the wall, and the tube end surface is flush with the wall surface. Thus, the tube end face can be disposed and attached to the second opening of the wall in a state in which the opening of the tube end surface serves as a lead-out port for an internal insertion member such as a cable. When the other end of the flexible piping material is exposed without protruding from the second opening of the wall, the other end of the flexible piping material is exposed by another pipe fixture within the second opening of the wall. It is preferable to fix. The pipe end refractory material is a gap between the outer peripheral surface of the protruding portion at the other end of the flexible piping material or the outer peripheral surface of the coupling fitted on the protruding portion and the opening on the other side surface of the wall. The gap space is filled so as to close the space. That is, when another flexible piping material is connected to the other end portion of the flexible piping material via a coupling, and the coupling is accommodated in the second opening, the fire resistance for the piping end portion is provided. The material is formed so as to close the gap space between the outer peripheral surface of the protruding portion at the other end of the flexible piping material or the outer peripheral surface of the coupling fitted on the protruding portion and the opening on the other side surface of the wall. The space is filled. At this time, the flexible piping material is exposed or protrudes from the inside of the wall toward the wall surface so that the pipe-end refractory material can be filled between the outer peripheral surface and the inner peripheral surface of the second opening of the wall. It only has to be.

  The arrangement structure of the boxes on the fireproof wall according to claim 2 is the structure according to claim 1, wherein the pipe end fireproof material is made of a heat-expandable fireproof sealant and is thermally expanded by heating to be flexible. The permeable piping material is crushed, and at the crushed location, the above-mentioned acceptable amount is filled with a filling amount necessary for narrowing a gap space between the flexible piping material and the internal insertion member in the flexible piping material. The outer peripheral surface of the flexible piping material is filled and covered.

  For example, the refractory material for the pipe end is made of a sodium silicate hydrate-based heat-expandable heat-resistant sealing material, and is heated and foamed in a gap space of the second opening of the wall by heating with a flame at the time of ignition or refractory. Due to thermal expansion. At this time, the refractory material for the pipe end portion is prevented from expanding outward by the peripheral surface of the second opening of the wall, so that a flexible piping material having flexibility also in the radial direction (for example, , The pipe end refractory material overcomes the wall strength of the flexible piping material (the strength of the peripheral wall) and crushes the flexible piping material inward. In order to narrow the gap space between the flexible piping material and the internal insertion member (for example, various cables, piping for water circulation, etc.) in the flexible piping material at the crushing location due to the expansion amount The outer peripheral surface of the flexible piping material is filled and coated with a necessary filling amount. Preferably, the refractory material for the pipe end portion substantially blocks the gap space between the peripheral wall of the flexible piping material and the internal insertion member, and prevents the intrusion of fire from the location to the inside of the wall. The outer peripheral surface of the flexible piping material is filled and coated with a necessary filling amount.

  The arrangement structure of the boxes on the fireproof wall according to claim 3 is the configuration according to claim 1 or 2, wherein the fireproof material for the pipe end portion is an exposed portion or a protruding portion at the other end of the flexible pipe material. Between the outer peripheral surface of the wall and the second opening of the wall, or the outer peripheral surface of the coupling fitted on the outer peripheral surface of the exposed portion or the protruding portion of the flexible piping material and the first of the wall A filling portion having a substantially short cylindrical shape corresponding to a gap space between the two openings, and a flange-shaped covering portion integrally projecting outward from one axial end of the filling portion.

  For example, when the flexible piping material is a cylindrical flexible conduit, the filling portion of the refractory material for the end of the piping has an inner diameter corresponding to the outer diameter of the flexible conduit (slightly larger diameter). The short cylindrical shape may be used, and the covering portion may have a circular ring plate shape (annular plate shape) integrally projecting outward from one axial end of the filling portion. Further, when the flexible piping material is a flexible tube having a substantially rectangular tube shape, the filling portion of the refractory material for the pipe end portion has an inner diameter (a slightly larger diameter) corresponding to the outer diameter of the flexible cable tube. The covering portion may be a square ring plate that integrally projects outward from one end in the axial direction of the filling portion.

  The arrangement structure of the boxes on the fire wall according to claim 4 is the structure according to any one of claims 1 to 3, wherein the attachment has a protruding portion inserted through the through hole of the boxes. The protrusions are held in the boxes by being exposed to the inner space of the boxes and are held in the boxes, and one end opening at the tip of the protrusion is opened in the boxes. A cylindrical shape made of synthetic resin to be placed inside. In addition, the box-end refractory material has a short cylindrical shape corresponding to the outer peripheral surface of the protruding portion of the attachment, and a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the mounting portion. Connecting the inner periphery covering portion coaxially disposed inside the outer periphery covering portion, one end of the outer periphery covering portion and one end of the inner periphery covering portion, and the tip of the protruding portion of the attachment portion And a tip covering portion having a ring plate shape corresponding to the surface.

  The arrangement structure of the boxes on the fire wall according to claim 5 includes metal boxes, a synthetic resin tubular attachment, and a box end refractory material. The boxes are arranged inside the wall, and an opening is arranged at a position facing the room side, and a through hole is arranged at a position corresponding to the inside of the wall. Further, the attachment device has a protruding portion inserted through the through hole of the boxes, and locks the protruding portion into the through hole of the boxes in a state where the protruding portion protrudes into the internal space of the boxes and is exposed. By this, while being hold | maintained at the said boxes, the one end opening of the said protrusion part tip is arrange | positioned inside the said boxes. Further, the box-end refractory material has an outer peripheral covering portion corresponding to the outer peripheral surface of the protruding portion of the attachment tool, and a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the attaching portion. None An inner peripheral covering portion that is coaxially disposed inside the outer peripheral covering portion, and one end of the outer peripheral covering portion and one end of the inner peripheral covering portion are connected to each other, and the distal end surface of the protruding portion of the attachment portion And a tip covering portion that forms a ring plate shape corresponding to.

  The refractory material according to claim 6 is a composite that is held by the boxes by engaging the protrusions in the through holes of the boxes with the protrusions protruding from the through holes of the metal boxes into the internal space and exposed. It is a refractory material that covers the tip of the protruding portion of the resin-made attachment. The refractory material has a short outer peripheral covering portion corresponding to the outer peripheral surface of the protruding portion of the attachment, and a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the attaching portion. A ring plate corresponding to the front end surface of the projecting portion of the attachment portion, connecting the inner peripheral covering portion coaxially disposed inside the outer peripheral covering portion and one end of the outer peripheral covering portion and one end of the inner peripheral covering portion. And a tip covering portion having a shape. The refractory material according to claim 6 can be suitably used as a refractory material for box ends in the arrangement structure of boxes on the refractory wall according to claims 1 to 5.

  The refractory material according to claim 7 is a refractory material that covers the tip of the flexible piping material. The refractory material has a short cylindrical shape corresponding to the outer peripheral surface of the distal end portion of the flexible piping material, and a cylindrical shape corresponding to the inner peripheral surface of the distal end portion of the flexible piping material. The inner periphery covering portion disposed coaxially inside the outer periphery covering portion is connected to one end of the outer periphery covering portion and one end of the inner periphery covering portion, and the distal end of the distal end portion of the flexible piping material And a tip covering portion having a ring plate shape corresponding to the surface.

  The arrangement structure of the boxes on the fire wall according to claim 1 is a box of attachments such as connectors fixed to the boxes even when a flame enters the boxes such as a wiring box in the event of a fire or the like. It can provide a reliable fire-proof function to the exposed parts inside the box and to the flammable members outside the box, and protects the attachments attached to the box so that they can be loosened or dropped off. In addition to being able to prevent it reliably, even in the case of a fireproof wall where the piping path penetrates from the opening on one side of the wall to the opening on the other side, it exhibits a fireproof function against flames from both sides of the wall can do.

  In addition to the effect of claim 1, the arrangement structure of boxes on the fireproof wall according to claim 2 is such that the refractory material for pipe ends is heated by the flame at the time of ignition or fire resistance so that the second opening of the wall The flexible piping material is crushed inward by thermal expansion by heating and foaming in the gap space, and the flexible piping material and the internal insertion in the flexible piping material at the crushing location by the expansion amount The gap space between the members is narrowed. As a result, it is possible to effectively prevent a fire from entering the inside of the wall from the crushed portion of the flexible piping material.

  In addition to the effect of claim 1 or 2, the arrangement structure of the boxes on the fireproof wall according to claim 3 is characterized in that the fireproof material for the pipe end portion has an outer peripheral surface of the protruding portion at the other end of the flexible pipe material. A gap space between the second opening of the wall or between the outer peripheral surface of the coupling fitted on the outer peripheral surface of the protruding portion of the flexible piping material and the second opening of the wall Demonstrate a reliable fire prevention function by closing the gap space.

  The arrangement structure of the boxes on the fireproof wall according to claim 4 includes, in addition to the effects of any one of claims 1 to 3, an outer periphery covering portion, an inner periphery covering portion, and a tip covering portion of the refractory material for the box end portion. The outer peripheral surface, the inner peripheral surface, and the tip surface of the protruding portion of the mounting tool can be covered simultaneously to exhibit a fireproof function.

  The arrangement structure of the boxes on the fireproof wall according to claim 5 is such that the outer peripheral surface, inner peripheral surface of the projecting portion of the attachment tool is formed by the outer peripheral covering portion, the inner peripheral covering portion and the tip covering portion of the refractory material for the box end portion. The surface and the tip surface can be covered at the same time to exhibit a fireproof function.

  The refractory material according to claim 6 is applied to, for example, the fixture having the structure for arranging the boxes on the refractory wall according to claims 1 to 5, and the outer periphery covering portion and inner periphery covering of the refractory material for the box end portion. The outer peripheral surface, the inner peripheral surface, and the front end surface of the protruding portion of the mounting tool can be simultaneously covered by the portion and the front end covering portion to exhibit a fireproof function.

  The refractory material according to claim 7 is applied to, for example, the attachment device of the structure for arranging the boxes on the refractory wall according to claims 1 to 5, and the outer periphery covering portion and inner periphery covering of the refractory material for pipe ends. The outer peripheral surface, the inner peripheral surface, and the distal end surface of the other end portion of the flexible conduit can be simultaneously covered by the portion and the distal end covering portion to exhibit a fire resistance function.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
FIG. 1 is a perspective view schematically showing an arrangement structure of boxes on a fireproof wall according to Embodiment 1 of the present invention. FIG. 2 is a front view showing a wiring box as a box used in the arrangement structure of the boxes on the fireproof wall according to Embodiment 1 of the present invention when viewed from the opening side. FIG. 3 is a side view showing a wiring box having a structure in which boxes are arranged on the fireproof wall according to Embodiment 1 of the present invention. FIG. 4 is an exploded perspective view showing a connector as a conduit connector used in the structure for arranging boxes on the fireproof wall according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view showing the relationship between the wiring box, the connector, and the refractory material in the arrangement structure of the boxes on the fireproof wall according to the first embodiment of the present invention, and the wiring box is on the lower side (connector mounting side). Only shown with virtual lines.

  As shown in FIG. 1, the arrangement structure of boxes on the fireproof wall according to the first embodiment includes a wiring box 10 as a box, a connector 20 constituting a conduit fitting as an attachment, A refractory material 30. As shown in FIGS. 2 and 3, the wiring box 10 has a square square box shape made of metal and has an opening 10 a on the side opposite to the bottom wall 11. The wiring box 10 is disposed inside a fireproof wall (not shown) as a fireproof wall, and the opening 10a is disposed at a position facing the box opening 1 provided on the indoor side of the fireproof wall. ing. Further, the wiring box 10 is provided with a circular knockout portion 13 that can be punched out on the bottom wall 11 and the side wall 12. The knockout portion 13 of the wiring box 10 is punched out by a tool such as a driver to form a circular through hole, and the through hole is arranged at a position corresponding to the inside of the fireproof wall (for example, the internal space of the fireproof hollow wall). It is supposed to be. The through-hole 13a of the wiring box 10 is inserted through a box mounting clamp or the like as a box fixture that constitutes the attachment, or a protruding portion of a connector as a conduit fitting that also constitutes the attachment or the like. Used to lock. In particular, in Embodiment 1, the through hole 13a of the wiring box 10 is used as an attachment hole for inserting and locking the protruding portion of the connector 20.

  As shown in FIG. 4, the connector 20 includes a connector body 21 made of synthetic resin and a nut 25 made of synthetic resin. The connector body 21 has a substantially cylindrical shape with both ends having a circular opening, and has a substantially cylindrical connecting portion 22 to which a conduit can be freely connected at one end in the axial direction, and the connecting portion 22 at the other end in the axial direction. It has a protrusion 23 having a cylindrical shape with a smaller diameter. A male screw 23 a is formed on the outer peripheral surface of the protruding portion 23, and a nut 25 can be screwed into the protruding portion 23. Further, a ring-shaped flange portion 24 is integrally formed at the base end of the protruding portion 23. In the connector 20, a protrusion 23 constituting a part of the connector body 21 in the axial direction (the other end) is inserted into the through hole 13 a of the side wall 12 of the wiring box 10, and the protrusion 23 is inserted into the internal space of the wiring box 10. In the exposed state, the nut 25 is screwed into the projecting portion 23 to be held and fixed to the wiring box 10. In addition, the protrusion part 23 of the connector 20 is penetrated by the through-hole 13a of the center of the lower side wall 12 of the wiring box 10 in FIG. At this time, in the connector 20, the flange 24 comes into contact with the peripheral portion of the through hole 13 a on the outer surface of the side wall 12 of the wiring box 10, and the base end outer peripheral surface of the protruding portion 23 contacts the peripheral edge of the through hole 13 a of the wiring box 10. On the other hand, the base end of the nut 25 is in contact with the peripheral portion of the through hole 13 a on the inner surface of the side wall 12 of the wiring box 10. Thus, in Embodiment 1, the connector 20 is locked and attached to the wiring box 10 by sandwiching the peripheral edge portion of the through hole 13a of the wiring box 10 between the flange 24 and the nut 25. It is like that. At this time, the tip opening of the protrusion 23 of the connector 20 (one end opening of the connector 20) is arranged in the internal space of the wiring box 10.

  A synthetic resin conduit (not shown) is connected to the connector 20 fixed to the wiring box 10. Specifically, the electric conduit is piped along a predetermined path inside a wall such as a fire-resistant hollow wall, and outside the wiring box 10, the connecting portion 22 of the connector main body 21 serving as the other end opening of the connector 20. It is connected to the front end opening (opening outside the wiring box 10) by insertion or the like. In addition, an electric wire (cable) 41 is inserted into the conduit, and is drawn out from the distal end opening of the connection portion 22, which is the other end opening of the connector 20, through the connector 20 and into the wiring box 10. The electric wire 41 is finally connected to a terminal such as an outlet.

  As shown in FIG. 5, the refractory material 30 is a foaming material that covers the entire protrusion 23 and the nut 25 of the connector 20 in the internal space of the wiring box 10 with a predetermined thickness in a state where the connector 20 is fixed to the wiring box 10. Made of an adhesive plastic material. Specifically, in the first embodiment, the adhesive plastic material of the refractory material 30 is obtained by kneading an inorganic refractory material such as sodium silicate or silica, a flame retardant rubber material, an oil and fat, and a foaming agent. Foaming property is imparted by blending. Thereby, the refractory material 30 has predetermined plasticity, and can be easily plastically deformed into an arbitrary shape, for example, a shape corresponding to the outer shape of the protruding portion 23 and the nut 25 of the connector 20 as an object. Further, the refractory material 30 has a predetermined adhesiveness, and is adhered to the outer surface of the protruding portion 23 and the nut 25 by being pressed against and attached to the protruding portion 23 and the nut of the connector 20 as an object. do not do. The refractory material 30 can be configured to have an arbitrary shape such as a small rectangular sheet shape, a long sheet shape, or a block shape as its initial shape. Then, the refractory material 30 covers the protrusion 23 and the nut 25 of the connector 20 with a predetermined thickness, or covers and presses the necessary amount or the required number of the refractory 30 so as to be integrated with the protrusion 23 and the nut 25 of the connector 20. By attaching to the surface of the part 23 and the nut 25, the whole protrusion part 23 and the nut 25 are closely_contact | adhered and covered without gap. Further, the refractory material 30 is integrally formed in a range from the one end opening at the tip of the protruding portion 23 of the connector 20 exposed in the internal space of the wiring box 10 and the tip of the nut 25 to the peripheral portion of the through hole 13 a on the inner surface of the wiring box 10. Covering.

  Furthermore, the refractory material 30 adheres to the continuous surface from the protrusion 23 of the connector 20 and the outer surface (outer peripheral surface or outer surface) of the nut 25 to the peripheral portion of the through hole 13 a on the inner surface of the wiring box 10. In particular, a protective structure that protects the protrusion 23 and the nut 25 and the wiring box 10 in an integrated manner is formed. That is, the refractory material 30 protects the support structure of the protrusions 23 of the connector 20 with respect to the wiring box 10 in a normal state (no fire is generated) and assists or maintains the support relationship between the two. Also works. The adhesive plastic material of the refractory material 30 starts to foam by heating at a predetermined temperature (for example, about 110 ° C.), and foams and expands from the state shown in FIG. It comes to show. However, at this time as well, while the refractory material 30 expands in volume, it maintains the function as a protective structure that protects the connector 20, in particular, the protrusion 23 and the wiring box 10 by integrating them. That is, the refractory material 30 covers the entire protruding portion 23 and the nut 25 which are exposed portions of the connector 20 in the wiring box 10 in the event of a fire, and gives the protruding portion 23 and the nut 25 sufficient fire resistance. While effectively preventing the burnout, dropping off, and the like, and maintaining the support structure of the protrusion portion 23 of the connector 20 with respect to the wiring box 10, the nut 25 is loosened or detached from the protrusion portion 23 due to an external force or the like. The function as a protective structure for preventing the above problems is maintained. Further, at the time of a fire, the base end of the protruding portion 23 of the connector 20 is thermally deformed by conduction heat from the metal wiring box 10, so that the base end outer peripheral surface of the protruding portion 23 and the through hole of the side wall 12 of the wiring box 10. Even when a gap is generated between the peripheral edge of 13a, the foamed refractory material 30 maintains the holding state of the protruding portion 23 of the connector 20 with respect to the peripheral edge of the through hole 13a of the wiring box 10 as a protective structure, and The peripheral edge of the through-hole 13a of the wiring box 10 is kept closed to prevent the flame from reaching the outer conduit of the wiring box 10 from the gap of the through-hole 13a portion of the wiring box 10. Yes.

  In the first embodiment, the refractory material 30 made of an adhesive plastic material is further densely filled into the inside from the tip opening of the projecting portion 23 which is the other end opening of the connector 20. A protective structure that is continuous at the other end opening portion of the connector 20 is formed on the protective structure that integrates the two. As a result, the refractory material 30 continuously integrates the protruding portion 23 of the connector 20 and the wiring box 10 from the inside of the connector 20 to the periphery of the through-hole 13a on the inner surface of the wiring box 10 outside and inside. The support structure of the connector 20 with respect to the wiring box 10 is protected to maintain or assist the support relationship between the two.

  Here, although illustration is omitted, the refractory material 30 extends not only to the internal space of the protruding portion 23 of the connector 20 but also to the internal space of the portion located outside the wiring box 10 (connecting portion 22 portion) in the connector 20. It may be filled densely. In other words, the refractory material 30 is formed on the outer side of the wiring box 10 (the connecting portion 22 portion) by the protective structure inside the protruding portion 23 integrated with the protective structure (the portion covering the protruding portion 23) formed on the outer side of the connector 20. You may comprise so that it may be extended to. In this case, the foamed refractory material 30 exhibits a fire resistance function inside and outside the connector 20 and functions as a protective structure even in the event of a thermal deformation due to conduction heat from the metal wiring box 10 in the event of a fire. The through hole 13a portion of the wiring box 10 is maintained by maintaining the holding state of the protruding portion 23 of the connector 20 with respect to the peripheral edge of the through hole 13a of the wiring box 10 and keeping the peripheral edge portion of the through hole 13a of the wiring box 10 closed. The flame is prevented from reaching the outer conduit of the wiring box 10 from the gap.

Next, an arrangement method, operation, and effect of the arrangement structure of boxes on the fireproof wall according to the first embodiment configured as described above will be described.
In order to arrange the arrangement structure of the boxes on the fireproof wall according to the first embodiment, for example, in the internal space of a fireproof hollow wall (lightweight partition wall or the like) as the fireproof wall, first, the wiring box 10 is fireproofed. It fixes to the predetermined position of the frame material (attachment bar etc.) attached to the internal space of a hollow wall using a predetermined | prescribed attachment tool thru | or support tool. Further, the knockout portion 13 of the side wall 12 of the wiring box 10 is punched out using a tool such as a screwdriver to form a through hole 13a, and the protruding portion 23 of the connector 20 is inserted into the through hole 13a from the outside of the wiring box 10. The nut 25 is screwed into the protruding portion 23 and tightened. Thereby, the connector 20 can be fixed to the wiring box 10. Further, the conduit is piped inside the fireproof hollow wall along the piping path, and the tip of the conduit is connected to the other end opening of the connecting portion 22 of the connector 20 by insertion or the like. Then, the electric wire 41 is inserted and passed through the inside of the conduit, and is pulled out from the front end opening of the connecting portion 22 of the connector 20 to the inside of the connector 20 and from the front end opening of the protruding portion 23 to the inside of the wiring box 10.

  Next, the necessary amount or the required number of refractory materials 30 are prepared, covered and pressed so as to be integrated with the protruding portion 23 and the nut 25 of the connector 20, and attached to the surfaces of the protruding portion 23 and the nut 25. The entire portion 23 and the nut 25 are covered closely without gaps, and the one end opening at the tip of the protruding portion 23 of the connector 20 exposed in the internal space of the wiring box 10 and the through hole 13 a on the inner surface of the wiring box 10 from the tip of the nut 25. Cover the entire area up to the periphery. At the same time, a part of the refractory material 30 located on the distal end side of the protruding portion 23 is also pressed into the inside from the distal end opening of the protruding portion 23 which is the other end opening of the connector 20 to be filled closely. At this time, first, the refractory material 30 is filled in the projecting portion 23, and then the refractory material inside and outside the projecting portion 23 is integrated by covering the outer surface of the projecting portion 23 and the nut 25 with the refractory material 30. It may be. As a result, as shown in FIG. 5, the entire protrusion 23 and the nut 25 of the connector 20 in the internal space of the wiring box 10 are densely covered with a predetermined thickness by the refractory material 30, and also inside the protrusion 23. The refractory material 30 is closely packed. Therefore, in the first embodiment, the refractory material 30 adheres to the continuous surface from the outer surface of the protruding portion 23 and the nut 25 to the peripheral portion of the through hole 13a on the inner surface of the wiring box 10, and particularly the protruding portion 23 of the connector 20. As a protective structure for protecting the support structure of the connector 20 with respect to the wiring box 10, particularly the protruding structure 23, in a normal state, forming a protective structure that maintains or assists the support relationship by integrating the wiring box 10. Also works. Further, in the event of a fire, when a flame enters the internal space from the opening 1 of the fireproof hollow wall through the opening 10a of the wiring box 10, the fireproof material 30 covering the protrusion 23 and the nut 25 with a predetermined thickness starts to foam at a predetermined temperature. Then, from the state shown in FIG. 5, it foams and expands in the internal space of the wiring box 10 and exhibits a fire resistance function. At the same time, the refractory material 30 expands in volume, while maintaining the function as a protective structure that maintains or assists the support relationship by integrating the protrusions 23 of the connector 20 and the wiring box 10 in particular.

  As a result, in the event of a fire, the refractory material 30 covers the entire protruding portion 23 and the nut 25 that are the exposed portions of the connector 20 in the wiring box 10, and imparts sufficient fire resistance to the protruding portion 23 and the nut 25. In addition to effectively preventing the burnout and dropping off of the connector, it normally functions as a protective structure, and protects the support structure of the protruding portion 23 of the connector 20 with respect to the wiring box 10 to ensure a support relationship therebetween. To maintain. Further, in the portion of the refractory material 30 in which the protruding portion 23 of the connector 20 and the nut 25 are enclosed, the same effect is obtained when the thickness of the side wall 12 of the wiring box 10 is increased by the thickness of the refractory material 30 as a result. Therefore, the influence of heat on the nut 25, the projecting portion 23, the connecting portion thereof, and the like can be greatly reduced. Further, even when a gap is generated between the base end outer peripheral surface of the protruding portion 23 of the connector 20 and the peripheral edge of the through hole 13 a of the side wall 12 of the wiring box 10, the refractory material 30 can be attached to the through hole 13 a of the wiring box 10. The gap can be eliminated by filling the gap in the peripheral edge or the like. In particular, in the event of a fire, the base end of the protruding portion 23 of the connector 20 is thermally deformed by conduction heat from the metal wiring box 10, and the through hole in the base end outer peripheral surface of the protruding portion 23 and the side wall 12 of the wiring box 10. Even when a gap is generated between the peripheral edge of 13a, the foamed refractory material 30 maintains the holding state of the protruding portion 23 of the connector 20 with respect to the peripheral edge of the through hole 13a of the wiring box 10 as a protective structure, and The peripheral edge of the through hole 13a of the wiring box 10 is kept closed so that the flame does not reach the outer conduit of the wiring box 10 from the gap in the through hole 13a portion of the wiring box 10. Further, since the entire nut 25 screwed to the projecting portion 23 is covered with the refractory material 30, it is possible to reliably prevent the nut 25 from being loosened or dropped off at both the normal time and the fire time. In this way, the arrangement structure of the boxes on the fire wall according to the first embodiment is such that the wiring of the connector 20 fixed to the wiring box 10 even when a flame enters the wiring box 10 at the time of a fire or the like. A reliable fire-proof function can be exerted on the projecting portion 23 that is an exposed portion inside the box 10 and a combustible member such as the electric wire 41 in the connector 20, and the attachment state of the connector 20 to the wiring box 10 is also simultaneously performed. Can be strengthened.

Embodiment 2
FIG. 6 is a cross-sectional view showing the relationship between the wiring box, the connector, and the refractory material in the arrangement structure of the boxes on the refractory wall according to the second embodiment of the present invention.
As shown in FIG. 6, the arrangement structure of the boxes on the fire wall according to the second embodiment uses a one-touch type connector 120 as a conduit connecting tool attached to the wiring box 10 as the boxes. . The other configuration is the same as the arrangement structure of the boxes on the fire wall according to the first embodiment. Specifically, in the second embodiment, the connector 120 has a substantially cylindrical shape with both ends having a circular opening, and has a substantially cylindrical connecting portion 122 to which a conduit can be freely connected at one end in the axial direction. At the other end, a projecting portion 123 having a cylindrical shape slightly larger in diameter than the connecting portion 122 is provided. In addition, a pair of latching claw portions 125 are integrally formed on the distal end side of the outer peripheral surface of the protruding portion 123 at positions facing each other in the radial direction. Further, a ring-shaped flange portion 124 is integrally formed at the base end of the protruding portion 123. The connector 120 pushes the pair of hooking claws 125 at the tip of the protruding portion 123 into the through holes 13 a of the side wall 12 of the wiring box 10 and arranges the protruding portion 123 inside the wiring box 10. The peripheral edge of the through hole 13a of the wiring box 10 is sandwiched and locked between the pair of hooking claws 125 and the flange 124 while being exposed to the internal space, thereby holding the wiring box 10 and holding it. Attached and fixed. At this time, the leading end opening of the protruding portion 123 of the connector 120 (one end opening of the connector 120) is arranged in the internal space of the wiring box 10. The connector 120 fixed to the wiring box 10 has a conduit tube made of synthetic resin or the like (as in the first embodiment).
(Not shown) is connected, and an electric wire 41 is inserted through the conduit and pulled out into the wiring box 10.

  Also in the second embodiment, as in the first embodiment, the refractory material 30 has a predetermined thickness on the entire protruding portion 123 of the connector 120 in the inner space of the wiring box 10 with the connector 120 fixed to the wiring box 10. cover. The refractory material 30 is attached to the surface of the projecting portion 123 by pressing and covering the projecting portion 123 of the connector 120 with a predetermined amount or the necessary number of sheets so as to be integrated with the projecting portion 123 of the connector 120. Thus, the entire projecting portion 123 is covered and covered without any gap. Further, the refractory material 30 integrally covers a range from one end opening at the tip of the protruding portion 123 of the connector 120 exposed in the internal space of the wiring box 10 to the peripheral portion of the through hole 13 a on the inner surface of the wiring box 10. Further, the refractory material 30 adheres to a continuous surface from the outer surface of the protruding portion 123 of the connector 120 to the peripheral portion of the through hole 13a on the inner surface of the wiring box 10, so that the protruding portion 123 of the connector 120 and the wiring box 10 are connected. A protection structure that integrally protects is formed. Also in the second embodiment, the refractory material 30 is densely filled into the inside from the tip opening of the protruding portion 123 of the connector 120, and the protruding portion 123 of the connector 120 and the wiring box 10 are continuously integrated inside and outside. The protection structure for protecting the support structure of the connector 120 with respect to the wiring box 10 can be formed.

  The arrangement structure of the boxes to the fireproof wall according to the second embodiment configured as described above can be disposed inside the fireproof hollow wall or the like in the same manner as in the first embodiment. Demonstrate the effect.

Embodiment 3
FIG. 7: is a front view which shows the fireproof hollow wall which provided the arrangement | positioning structure of the boxes to the fireproof wall which concerns on Embodiment 3 of this invention seeing from the indoor side. FIG. 8 is a front view showing a switch box as a box used in the arrangement structure of the boxes on the fire wall according to the third embodiment of the present invention when viewed from the opening side. FIG. 9 is a side view showing a switch box having a structure for arranging boxes on a fireproof wall according to Embodiment 3 of the present invention. FIG. 10 is a cross-sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 3 of the present invention. FIG. 11 is a cross-sectional view showing the arrangement structure of boxes on the fireproof wall according to the third embodiment of the present invention when the fireproof material portion of the switch box is viewed from the bottom side, and the upper half shows the fireproof material outside the connector. The lower half shows a state where the outside of the connector is covered with a refractory material by a virtual line.

  As shown in FIG. 7, the arrangement structure of boxes on the fireproof wall according to the third embodiment includes a switch box 210 as a box, and the connector 20 and the fireproof material 30 similar to those in the first embodiment. . As shown in FIGS. 8 and 9, the switch box 210 has a rectangular rectangular box shape made of metal, has an opening 210 a on the side opposite to the bottom wall 211, and is disposed in the fireproof hollow wall 5. As shown in FIG. 10, the switch box 210 is disposed in the internal space of the fireproof hollow wall 5 as a fireproof wall, and is located at a position facing the box opening 5 a provided on the indoor side of the fireproof hollow wall 5. An opening 210a is arranged. Specifically, the fire-resistant hollow wall 5 is a lightweight partition wall, and a plurality of lightweight studs (studs) 7 are erected at regular intervals between a pair of upper and lower cross members 6 to form a frame. Gypsum boards 5A and 5B are attached to the front and back sides, respectively. Further, a metal fixing bar 8 as a box fixing tool is interposed and fixed between a pair of lightweight studs 7 at a portion where the switch box 210 is disposed. The switch box 210 is provided with a circular knockout portion 213 that can be punched out on the bottom wall 211 and the side wall 212 as in the case of the wiring box 10 of the first embodiment. The knockout part 213 of the switch box 210 is punched out by a tool such as a driver to form a circular through hole 213a, and the through hole 213a is arranged at a position corresponding to the internal space of the fireproof hollow wall 5. Yes. Further, the through-hole 213a of the switch box 210 is inserted through a box mounting clamp or the like as a fixture for a box constituting the attachment, or a protruding portion of a connector as a conduit fitting constituting the attachment. Used to lock. In particular, in the third embodiment, the through hole 213a of the switch box 210 is used as an attachment hole for inserting and locking the protruding portion 23 of the connector 20 as in the first embodiment. Further, in the third embodiment, a metal coating cover 215 is attached to the opening 210a of the switch box 210 to cover the opening 210a.

  In the third embodiment, the connector 20 is inserted into the through hole 213a of the side wall 212 of the switch box 210 through the protruding portion 23 of the connector body 21, and the protruding portion 23 is exposed to the internal space of the switch box 210. By screwing the nut 25 into the projecting portion 23, the peripheral portion of the through hole 213 a of the switch box 210 is sandwiched and locked between the flange 24 and the nut 25, thereby holding the switch box 210 and holding it. Attached and fixed. At this time, the tip opening of the protrusion 23 of the connector 20 is arranged in the internal space of the switch box 210. In addition, a flexible electrical conduit 40 made of a synthetic resin having a number and a diameter corresponding to the connector 20 is provided in the internal space of the fire-resistant hollow wall 5 along a predetermined path, and each electrical conduit 40 is connected to the switch box 210. On the outside, they are connected by being inserted into the tip openings of the connection portions 22 of the corresponding connectors 20. In addition, wires (cables) 41 having corresponding diameters are respectively inserted into the flexible conduits 40, passing through the inside of the connector 20 from the opening of the connecting portion 22 of the corresponding connector 20, and switching from the opening of the protruding portion 23 to the switch 20. It is pulled out inside the box 210.

  As shown in FIG. 11, in the third embodiment as well, in the state where the connector 20 is fixed to the side wall 211 of the switch box 210, the protruding portion 23 and the nut 25 of each size connector 20 are set in a predetermined manner as in the first embodiment. By covering and pressing the necessary amount or the required number of refractory materials 30 for covering with a thickness so as to be integrated with the protruding portion 23 and the nut 25 of the corresponding connector 20, and attaching them to the surface of the protruding portion 23 and the nut 25. The refractory material 30 covers the entire protrusion 23 and the nut 25 with a predetermined thickness in close contact with each other without a gap. Further, the refractory material 30 has a range from the one end opening at the tip of the protrusion 23 of the connector 20 exposed in the internal space of the switch box 210 and the tip of the nut 25 to the periphery of the through hole 213a on the inner surface of the side wall 212 of the switch box 210. Covered integrally. Further, the refractory material 30 adheres to the continuous surface extending from the outer surface of the protruding portion 23 and the nut 25 of the connector 20 to the peripheral portion of the through hole 213 a on the inner surface of the side wall 212 of the switch box 210, and particularly the protruding portion 23 of the connector 20. And a protection structure for integrally protecting the wiring box 10. On the other hand, also in the third embodiment, the refractory material 30 is densely filled into the inside from the tip opening of the protruding portion 23 of the connector 20, and the protruding portion 23 of the connector 20 and the switch box 210 are continuously integrated inside and outside. Thus, a protection structure that protects the support structure of the connector 20 with respect to the switch box 210 can be formed.

  In the third embodiment, the refractory material 30 covers the projecting portion 23 and the nut 25 of the connector 20 in a state where the refractory material 30 is spread in a substantially rounded rectangular shape so as to spread over the entire width of the side wall 212 of the switch box 210. . Further, a slight gap is provided between the refractory materials 30 of the adjacent connectors 20. Here, the refractory material 30 is extended so as to spread over the entire width of the side wall 212 of the switch box 210, and covers the protruding portion 23 and the nut 25 of the connector 20 in contact with the inner surface of the coating cover 215. It is preferable to do. In this way, in addition to the improvement in fire resistance due to the metallic coating cover 215, the refractory material 30 adheres to the coating cover 215 on the opening 210a side of the switch box 210 and the side wall 212 continuous thereto, and thus the bottom of the switch box 210. The protective structure is formed in the entire width direction range from the wall 211 to the coating cover 215, and the function and effect of the protective structure are exhibited. In the event of a fire, the flame first enters the interior space of the switch box 210 through the opening of the paint cover 215. At this time, the refractory material 30 has a full width from the paint cover 215 to the bottom wall 211 of the switch box 210. Since the direction range is covered, foaming is performed by the flame in the vicinity of the coating cover 215 and heat from the flame is surely cut off, so that the fire resistance can be further improved.

  The arrangement structure of the boxes to the fireproof wall according to the third embodiment configured as described above can be disposed inside the fireproof hollow wall 5 and the like in the same manner as in the first embodiment. The same action and effect as 1 and 2 are exhibited.

Embodiment 4
FIG. 12 is a cross-sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 4 of the present invention.
As shown in FIG. 12, the arrangement structure of the boxes on the fire wall according to the fourth embodiment is similar to the arrangement structure of the boxes on the fire wall according to the third embodiment. In a state where the connector 20 is fixed to the connector 210, the range from the connecting portion 22 as the outer portion disposed outside the switch box 210 in the connector 20 to the peripheral portion of the through hole 213a on the outer surface of the switch box 210 is substantially constant. A second refractory material 330 that is integrally covered with a wall thickness is provided. Specifically, the second refractory material 330 adheres to the continuous surface from the outer surface (outer peripheral surface to outer surface) of the connection portion 22 of the connector 20 to the peripheral portion of the through hole 213a on the outer surface of the switch box 210, and the switch Outside the box 210, an external protection structure that protects the connector 20, in particular, the connection portion 22 and the switch box 210 by integrating them is formed. Similarly to the refractory material 30, the second refractory material 330 is also foamed by heating at a predetermined temperature or more and exhibits a fire resistance function outside the switch box. Therefore, the peripheral edge portion of the through hole 213a is kept closed to eliminate the gap in the through hole 213a.

  The arrangement structure of the boxes on the fireproof wall according to the fourth embodiment configured as described above can be disposed inside the fireproof hollow wall 5 and the like in the same manner as in the third embodiment. The same actions and effects as 1 to 3 are exhibited.

Embodiment 5
FIG. 13 is a sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 5 of the present invention.

  As shown in FIG. 13, the arrangement structure of the boxes on the fireproof wall according to the fifth embodiment is such that one of the fireproof hollow walls 5 is provided from the first opening 5 a provided on one side surface 5 </ b> A of the fireproof hollow wall 5. On the other side surface 5B facing the side surface 5A, there is a piping path inside that leads to the second opening 5b provided at a position spaced apart from the first opening 5a by a predetermined distance. Specifically, in the arrangement structure of boxes on the fireproof wall according to the fifth embodiment, a metal wiring box (switch box) 210 as a box is provided with a first opening in the internal space of the fireproof hollow wall 5. It is arrange | positioned in the position facing 5a. Further, the wiring box 210 is disposed so that the surface on the opening 210 a side faces the first opening 5 a of the fireproof hollow wall 5, and the opening 210 a faces the first opening 5 a of the fireproof hollow wall 5. Is arranged. Furthermore, the wiring box 210 is disposed with the upper surface provided with the insertion hole 213a as a through hole facing upward of the internal space of the fireproof hollow wall 5, and the insertion hole 213a is disposed in the internal space of the fireproof hollow wall 5. It is arranged at a position corresponding to the upper side. In the insertion hole 213a of the wiring box 210, a connector 20 made of synthetic resin as an attachment tool is attached from above in the same manner as in the first to fourth embodiments. That is, the connector 20 is connected to the wiring box 210 in a state where the protruding portion 23 of the connector 20 is inserted into the insertion hole 213a of the wiring box 210 and one end of the protruding portion 23 on the insertion side is exposed to the internal space of the wiring box 210. 210 is attached in a locked manner. Further, in the internal space of the wiring box 210, the box-end refractory material 30 having the same configuration as the refractory material 30 is connected to the connector in the internal space of the wiring box 210 in the same manner as in the first to fourth embodiments. 20 is covered and filled so that the whole of the protruding portion 23 that is the exposed portion of the wiring box 210 is in close contact with the entire inner surface of the upper wall of the wiring box 210.

  On the other hand, in the fifth embodiment, boxes such as the wiring box 210 are not provided on the other side surface 5B of the fireproof hollow wall 5. That is, the arrangement structure of the boxes on the fireproof wall according to the fifth embodiment is the other end of the flexible conduit 40 as the flexible piping material (the end opposite to the mounting end on the wiring box 210 side). Part) reaches the second opening 5b provided on the other side surface 5B of the fireproof hollow wall 5 without using boxes, and is applied to the fireproof wall of the piping structure protruding from the opening. The second opening 5b of the fire-resistant hollow wall 5 has a shape corresponding to the outer peripheral surface shape of the flexible piping material 40 to be inserted (for example, in the case of a cylindrical flexible piping material, a corresponding circular or square cylindrical shape). In the case of the flexible piping material, a corresponding rectangular shape) is formed, and the inner diameter is slightly (approximately several mm) larger than the outer diameter or outer dimension of the flexible piping material 40. Therefore, the part which opposes the internal peripheral surface of the 2nd opening 5b of the fireproof hollow wall 5 in the outer peripheral surface of the other end part of the flexible electric wire tube 40, and the internal peripheral surface of the 2nd opening 5b of the said fireproof hollow wall 5 A gap space having a thickness corresponding to the difference between the outer diameter of the flexible conduit 40 and the inner diameter of the second opening 5b of the refractory hollow wall 5 is formed. And in Embodiment 5, the refractory material 410 for pipe ends is between the exposed part or protrusion part of the other end of the flexible conduit 40, and the 2nd opening 5b of the other side 5B of the refractory hollow wall 5. Filled to close. Specifically, the refractory material for pipe end 410 has a portion facing the inner peripheral surface of the second opening 5b of the refractory hollow wall 5 on the outer peripheral surface of the other end of the flexible conduit 40 and the refractory hollow wall. And the exposed portion or the protruding portion from the other side surface 5B of the refractory hollow wall 5 of the flexible electric conduit 40, while being filled so as to completely close the gap space between the inner peripheral surface of the second opening 5b. And a predetermined range of the outer peripheral edge portion of the second opening 5b on the other side surface 5B of the fireproof hollow wall 5 are filled. In addition, the internal diameter of the 2nd opening 5b of the said fireproof hollow wall 5 is determined corresponding to the nominal diameter of the flexible electric wire tube 40 which penetrates, and the nominal diameter of the flexible electric wire tube 40 which also penetrates the volume of the said clearance gap space It will be determined according to.

  Here, the box-end refractory material 30 and the pipe-end refractory material 410 can be made of, for example, the foamable adhesive plastic material described in the first embodiment. A styrene-butadiene polymer mixed sodium silicate hydrate-based block-like or sheet-like thermally expandable heat-resistant sealing material can be used. Examples of the heat-expandable material for the heat-expandable heat-resistant sealing material include a clay-like plastic material in which sodium silicate hydrate, styrene-butadiene polymer, natural wax, polybutylene, glass fiber and the like are mixed at a predetermined blending ratio. It is also possible to produce a heat-expandable heat-resistant sealing material by previously molding the heat-expandable material into a predetermined shape. Alternatively, the box-end refractory material 30 and the pipe-end refractory material 410 may be made of, for example, a base material made of a synthetic resin material such as polyethylene resin (PE) or other polymer material such as rubber, expanded graphite or the like. You may shape | mold the thermally expansible material which mixed the expandable material (for example, with the mixture ratio of 30 mass%) etc. in the defined shape. The box-end refractory material 30 and the pipe-end refractory material 410 formed from these materials both have good plastic deformability and adhesiveness as in the first embodiment.

  In the example shown in FIG. 13, the pipe end portion refractory material 410 includes a portion facing the inner peripheral surface of the second opening 5 b of the fireproof hollow wall 5 on the outer peripheral surface of the other end portion of the flexible electric conduit 40 and the fireproof material. A cylindrical portion having a cylindrical shape substantially the same shape as the gap space between the inner peripheral surface of the second opening 5b of the hollow wall 5 and an outer peripheral edge of the second opening 5b in the other side surface 5B of the refractory hollow wall 5 Forming a ring shape corresponding to a predetermined range of the portion, and forming in advance a flanged tubular shape including a flange-shaped flange portion integrally projecting outward from the outer peripheral edge of the tubular portion. it can. In this case, the outer peripheral surface of the cylindrical portion has the same shape as the shape of the second opening 5b of the fireproof hollow wall 5, for example, when the second opening 5b is circular, the outer peripheral surface is a circular outer peripheral surface. In the case where the opening 5b is rectangular, the rectangular outer peripheral surface has the same shape. Similarly, the inner peripheral surface of the cylindrical portion has the same shape as the outer peripheral surface shape of the flexible conduit 40. For example, when the flexible conduit 40 is cylindrical, the inner peripheral surface is the same circular inner peripheral surface. When the flexible electric wire tube 40 is a rectangular tube shape, it is the same rectangular inner peripheral surface. In addition, the said collar part is made into the shape corresponding to the shape of a cylinder part, for example, when a cylinder part becomes cylindrical shape, it is set as a circular ring shape, and when a cylinder part becomes square shape, it is set as a square ring shape. . However, the outer shape (outer peripheral edge shape) of the flange portion may be a ring shape unrelated to the shape of the second cylindrical portion of the fireproof hollow wall. For example, regardless of whether the cylindrical portion is a circular cylindrical shape or a rectangular cylindrical shape, the outer peripheral edge shape of the collar portion may be an arbitrary shape such as a circular shape or a rectangular shape.

  FIG. 14 is a perspective view showing a refractory material for a pipe end portion used in a structure for arranging boxes on a refractory wall according to Embodiment 5 of the present invention, as viewed from the covering portion side. FIG. 15: is a perspective view which shows the refractory material for pipe ends used in the arrangement structure of the boxes to the refractory wall concerning Embodiment 5 of this invention seeing from the filling part side. FIG. 16: is a top view which shows the refractory material for pipe ends used with the arrangement | positioning structure of the boxes to the refractory wall which concerns on Embodiment 5 of this invention. FIG. 17: is a side view which shows the refractory material for pipe ends used with the arrangement structure of the boxes to the refractory wall which concerns on Embodiment 5 of this invention.

  As described above, in the case where the pipe end refractory material is constituted by the cylindrical portion and the flange portion, specifically, the configuration shown in FIGS. That is, the pipe end refractory material 410 is integrally formed with a filling portion 411 having a short cylindrical shape (corresponding to the tube portion of the pipe end portion refractory material 410 in FIG. 13) and one end in the axial direction of the filling portion 411. And a flanged or ring-shaped covering portion 412 (corresponding to the flange portion of the pipe end refractory material 410 in FIG. 13) integrally formed with a flange. The outer peripheral edge portion of the outer side surface of the covering portion 412 (the side surface opposite to the filling portion 411) is chamfered and is inclined. Moreover, one place in the circumferential direction of the pipe end refractory material 410 is completely cut in the radial direction to form a slit 413, and the diameter and deformation of the pipe end refractory material 410 can be made through the slit 413. ing. The filling portion of the pipe end refractory material 410 corresponds to the outer diameter and outer peripheral surface shape of the flexible electric wire tube 40 to be covered and filled, as described in the pipe end refractory material 410 in FIG. The diameter and the cylinder shape. That is, the filling part 411 is an exposed part (opposite part to the inner peripheral surface of the second opening 5b of the refractory wall 5) or a protruding part (second opening 5b of the refractory wall 5) of the other end of the flexible conduit 40. A portion that protrudes outward from the outer peripheral surface) and the second opening 5b of the refractory hollow wall 5 to form a substantially short cylindrical shape corresponding to the gap space. Alternatively, an outer fitting member (not shown) such as a coupling is fitted on the outer peripheral surface of the flexible conduit 40 (the portion facing the second opening 5b of the fireproof hollow wall 5 and / or its peripheral portion). In this case, the refractory material 410 for the pipe end portion is formed on the outer peripheral surface of the outer fitting member fitted on the outer peripheral surface of the exposed portion or the protruding portion of the flexible conduit 40 and the first refractory hollow wall 5. It forms a substantially short cylindrical shape corresponding to the gap space between the two openings 5b. In addition, as described above, for example, when the flexible piping material is a cylindrical flexible electric wire tube, the filling portion 412 of the piping end portion refractory material 410 corresponds to the outer diameter of the flexible electric wire tube 40. The covering portion 412 can be a substantially short cylindrical shape having a (slightly large diameter) inner diameter, and the covering portion 412 is formed in a circular ring plate shape (circular shape) integrally projecting outward from one axial end of the filling portion 411. Ring plate-like). In addition, when the flexible conduit 40 is a substantially rectangular tube-shaped flexible conduit, the filling portion 411 of the pipe end refractory material 410 corresponds to the outer diameter of the flexible conduit 40 (a slightly larger diameter). ) A substantially short rectangular tube shape having an inner diameter, and the covering portion 412 may be a square ring plate shape that integrally projects outward from one axial end of the filling portion 411.

Next, an arrangement method, an operation and an effect of the arrangement structure of the boxes on the fireproof wall according to Embodiment 5 configured as described above will be described.
In order to arrange the arrangement structure of the boxes on the fireproof wall according to the fifth embodiment, for example, in the internal space of the fireproof hollow wall (lightweight partition wall or the like) as the fireproof wall, Similarly, the wiring box 210 is disposed in the internal space of the fireproof hollow wall 5, and the connector 20 is attached to the wiring box 210. In addition, one end of the flexible conduit 40 is connected to the connector 20, the flexible conduit 40 is piped along the piping path in the internal space of the fireproof hollow wall 5, and the other end of the flexible conduit 40 is fireproofed. The hollow wall is drawn out from the second opening 5b. And the electric wire 41 as an internal insertion member is penetrated inside the flexible electric wire tube 40, the one end side of the electric wire 41 is pulled out to the inside of the wiring box 210 via the connector 20, and the other end of the electric wire 41 is inserted. The side is projected from the other end opening of the flexible conduit 40.

  Next, in this state, on the first opening 5a side of the refractory hollow wall 5, as in the case of the first and third embodiments, a necessary or required number of blocks or sheet-like box end portions are used. A refractory material 30 is prepared, covered and pressed so as to be integrated with the protruding portion 23 and the nut 25 of the connector 20, and adhered to the surface of the protruding portion 23 and the nut 25, so that there is a gap between the protruding portion 23 and the nut 25. Cover closely with a predetermined thickness. Further, the box-end refractory material 30 has a peripheral portion of the through-hole 213a on the inner surface of the side wall 212 of the wiring box 210 from the one end opening of the protruding portion 23 of the connector 20 exposed in the internal space of the wiring box 210 and the nut 25 tip. Further, it is made to cover the range up to and from the outer surface of the protruding portion 23 and the nut 25 of the connector 20 to the continuous surface from the inner surface of the side wall 212 of the wiring box 210 to the peripheral portion of the through hole 213a. As a result, as in the case of the first and third embodiments, the box-end refractory material 30 forms a protective structure that integrally protects the protruding portion 23 of the connector 20 and the wiring box 10, while the connector. The inside of the protrusion 20 of the connector 20 and the wiring box 210 are integrated continuously inside and outside to protect the support structure of the connector 20 with respect to the wiring box 210. Forming a protective structure.

  On the other hand, on the second opening 5b side of the refractory hollow wall 5, when using a refractory material 410 for a pipe end portion in the form of a block or a sheet, the necessary amount or the required number of block or sheet pipe end portions are used. The fire-resistant material 410 is prepared, and the block-like or sheet-like heat-expandable heat-resistant sealing material is attached to the inner peripheral surface of the second opening 5b of the fire-resistant hollow wall 5 on the outer peripheral surface of the other end portion of the flexible conduit 40. And the other side surface of the refractory hollow wall 5 of the flexible conduit 40, while filling the gap space between the portion facing the flank and the inner peripheral surface of the second opening 5b of the refractory hollow wall 5 completely. It fills up so that it may block | close between the exposed part or protrusion part from 5B, and the predetermined range of the outer periphery part of the 2nd opening 5b in the other side surface 5B of the fireproof hollow wall 5. FIG.

  Moreover, when using the pipe end part refractory material 410 previously molded into a predetermined shape (a short tubular shape with a flange or the shape shown in FIGS. 14 to 17) as described above, the tubular portion or the filling portion 411 is formed with a refractory hollow wall. 5 is inserted into the gap space between the inner peripheral surface of the second opening 5b and the outer peripheral surface of the corresponding portion of the flexible conduit tube 40 from the outside, and is tightly filled to fill the flange portion or the covering portion 412 with a fireproof hollow. The wall 5 is covered and filled in close contact with the outer peripheral edge of the second opening 5b on the other side surface 5B. At this time, in the case of the pipe end refractory material 410 of FIGS. 14 to 17, the filling portion 411 and the covering portion 412 can be expanded or deformed through the slit 413, and the outer fitting operation to the flexible electric conduit 40 is possible. Can be performed smoothly. Further, the pipe end portion refractory material 410 has a filling portion 411 and a covering portion 412, and a gap space between the flexible electric wire tube 40 and the second opening 5 b of the refractory hollow wall 5 and the refractory hollow wall 5. Since the peripheral portion of the second opening 5b is preliminarily formed into a shape that can be filled and covered at the same time, the filling operation and the covering operation can be performed in a short time in one operation, and the workability is very good. Further, the filling portion 411 is filled in the gap space between the flexible conduit 40 and the second opening 5b of the fireproof hollow wall 5, and at the same time, the covering portion 412 is a peripheral portion of the second opening 5b of the fireproof hollow wall 5. Is automatically covered, so that the peripheral portion of the second opening 5b of the fireproof hollow wall 5 is not forgotten to be covered. In addition, it is not essential to cover the periphery of the second opening 5b of the fireproof hollow wall 5 with the pipe end refractory material 410, but if the periphery of the second opening 5b of the fireproof hollow wall 5 is covered, Fire resistance can be improved.

  The pipe-end refractory material 410 laid in this way is formed from the gap space between the outer peripheral surface of the flexible electric conduit 40 and the inner peripheral surface of the second opening 5b of the refractory hollow wall 5. Adhering to the continuous surface reaching the peripheral portion (predetermined range of the outer peripheral edge portion) of the second opening 5b in the other side surface 5B, the flexible electric wire tube 40 and the second opening 5b portion and the peripheral portion of the refractory hollow wall 5 Is formed as a protective structure. That is, the refractory material 410 for the pipe end portion assists or maintains the support relationship between the second opening 5b of the refractory hollow wall 5 and the flexible electric wire tube 40 at a normal time (no fire is generated). It also functions as a protective structure. The adhesive plastic material of the pipe end refractory material 410 starts foaming by heating at a predetermined temperature (for example, about 110 ° C.) as in the case of the box end refractory material 30, and from the state shown in FIG. The fireproof wall 5 expands and expands toward the outside of the second opening 5b of the fireproof wall 5 (both the internal space side and the external space side of the fireproof wall 5) to exhibit a fireproof function. However, at this time as well, the pipe end refractory material 410 expands in volume, and as a protective structure that integrally protects the second opening 5b of the refractory hollow wall 5 and the flexible electric wire tube 40. Maintain the function of. That is, the pipe-end refractory material 410 is formed from the space between the outer peripheral surface of the flexible conduit 40 and the inner peripheral surface of the second opening 5b of the fire-resistant hollow wall 5 in the event of a fire. The entire continuous surface extending to the periphery of the second opening 5b on the other side surface 5B (predetermined range of the outer peripheral edge) is tightly covered, and the second opening 5b of the fireproof hollow wall 5 and the flexibility at the periphery are covered. A sufficient fire resistance is imparted to the exposed portion and the projecting portion of the conduit 40 to effectively prevent its burning and dropping, and between the second opening 5b of the fire resistant hollow wall 5 and the flexible conduit 40. The support structure is maintained, and the function as a protective structure for preventing problems such as the flexible electric wire tube 40 falling off easily is maintained. Further, in the event of a fire, the foamed refractory material for pipe end 410 maintains the holding state of the flexible conduit 40 with respect to the second opening 5b of the refractory hollow wall 5 as a protective structure, and the refractory hollow wall 5 From the gap between the second opening 5b of the refractory hollow wall 5 and the flexible electric wire tube 40, the refractory hollow is maintained while keeping the gap space between the second opening 5b and the flexible electric wire tube 40 closed. A flame is prevented from reaching the flexible conduit 40 and the like inside the wall 5.

  Here, the filling amounts of the box-end refractory material 30 and the pipe-end refractory material 410 are mainly increased / decreased according to the dimensions (nominal diameter) of the flexible conduit 40, but the same nominal number is used. In the case of the flexible conduit 40 having a diameter, it is preferable that the filling amount of the pipe end portion refractory material 410 is larger (for example, about 1.5 to 2 times) than the filling amount of the box end portion refractory material 30. .

  Further, the arrangement structure of the boxes on the fireproof wall according to the fifth embodiment is for a pipe end portion made of a heat-expandable fireproof seal material (for example, a sodium silicate hydrate-based heat-expandable heat-resistant seal material). The refractory material 410 is thermally expanded by heating to crush the flexible conduit 40, and the gap space between the flexible conduit 40 and the electric wire 41 in the flexible conduit 40 is narrowed at the crushing portion. It is preferable to fill and coat between the second opening 5b of the fireproof hollow wall 5 and the flexible electric conduit 40 so as to obtain a filling amount necessary for the purpose. For example, when the nominal diameter of the flexible conduit 40 is 28 mm, the filling amount of the pipe end refractory material 410 is 30 g or more. When the nominal diameter of the flexible conduit 40 is 22 mm, the pipe end refractory 410 When the nominal amount of the flexible conduit 40 is 16 mm, the filling amount of the refractory material 410 for the pipe end is 20 g or more, and the nominal diameter of the flexible conduit 40 is 14 mm. The filling amount of the end portion refractory material 410 is preferably 15 g or more. In this case, the pipe end portion refractory material 410 having the predetermined filling amount has a gap between the flexible electric pipe 40 and the second opening 5b of the refractory hollow wall 5 by heating with a flame at the time of ignition or refractory. It thermally expands at a predetermined expansion rate according to various conditions such as composition by heating and foaming in the space. At this time, the pipe-end refractory material 410 is flexible to the inside in the radial direction by being prevented from expanding outward by the inner peripheral surface of the second opening 5b of the refractory hollow wall 5. It expands toward the flexible conduit 40. Therefore, the pipe end refractory material 410 having the predetermined filling amount overcomes the wall strength of the flexible conduit 40 (the strength of the peripheral wall) and crushes the flexible conduit 40 inward, and the expansion amount causes the The gap space between the flexible conduit 40 and the wire 41 in the flexible conduit 40 is narrowed at the crushing location, or the flexible conduit 40 and the wire 41 in the flexible conduit 40 are narrowed. The gap between them is almost eliminated. As a result, the refractory material 410 for the pipe end portion at the crushing location effectively prevents the fire from entering from the gap space between the peripheral wall of the flexible conduit 40 and the electric wire 41 to the internal space side of the refractory hollow wall 5. Can be deterred or blocked. Preferably, the pipe end portion refractory material 410 substantially closes and eliminates the gap space between the peripheral wall of the flexible conduit 40 and the electric wire 41, and fires from the location toward the internal space side of the refractory hollow wall 5. Is filled between the second opening 5b of the refractory hollow wall 5 and the outer peripheral surface of the other end portion of the flexible electric wire tube 40 so as to obtain a filling amount necessary to prevent the penetration of.

Embodiment 6
FIG. 18 is a perspective view showing the pipe-end refractory material used in the structure for arranging boxes on the refractory wall according to Embodiment 6 of the present invention as seen from the tip covering portion side. FIG. 19 is a perspective view showing a pipe-end refractory material used in the structure for arranging boxes on a refractory wall according to Embodiment 6 of the present invention when viewed from the side opposite to the tip covering portion. FIG. 20 is a plan view showing a pipe-end refractory material used in a structure for arranging boxes on a refractory wall according to Embodiment 6 of the present invention. FIG. 21 is a side view showing a refractory material for pipe ends used in the structure for arranging boxes on the refractory wall according to Embodiment 6 of the present invention.
The arrangement structure of the boxes on the refractory wall according to the sixth embodiment is the same as that of the first to fifth embodiments in the configuration of the refractory material for box ends disposed on the first opening 5a side of the refractory hollow wall 5. This is different from the arrangement structure of boxes on the fireproof wall according to the above, but the other configurations are the same. More specifically, the box-end refractory material 420 used in the structure for arranging boxes on the refractory wall according to the sixth embodiment is the connector 20 as an attachment as described in the first to fourth embodiments. , 120 to be applied. The box-end refractory material 420 has an outer peripheral covering portion 421, an inner peripheral covering portion 422, and a distal end so that the outer peripheral surface, the inner peripheral surface and the distal end surface of the protruding portion of the attachment portion such as the connector 20, 120 can be covered and filled simultaneously It has a substantially bottomed two-stage cylindrical shape in which the covering portion 423 is integrally formed. Specifically, the outer peripheral covering portion 421 has a short cylindrical shape corresponding to the outer peripheral surfaces of the protruding portions 23 and 123 of the connectors 20 and 120, and has an inner diameter that is substantially the same as the outer diameter of the protruding portions 23 and 123. Yes. Further, the inner peripheral covering portion 422 has a cylindrical shape corresponding to the inner peripheral surfaces of the projecting portions 23 and 123 of the connectors 20 and 120, has a smaller diameter than the outer peripheral covering portion 421, and is coaxial with the inner side of the outer peripheral covering portion 421. Has been placed. Further, the tip covering portion 423 connects between one end in the axial direction of the outer periphery covering portion 421 and one end in the axial direction of the inner periphery covering portion 422, and corresponds to the tip end surface of the protruding portions 23 and 123 of the connectors 20 and 120. Forms a ring plate. The inner periphery covering portion 422 is longer than the outer periphery covering portion 422 and protrudes from the outer periphery covering portion 422 by a predetermined length. Further, the outer peripheral edge portion of the outer side surface (the side surface opposite to the filling portion 411) of the tip covering portion 423 is chamfered and is inclined. Furthermore, one place in the circumferential direction of the box-end refractory material 420 is completely cut in the radial direction to form a slit 424, and the box-end refractory material 420 can be enlarged and deformed through the slit 424. ing.

  The box-end refractory material 420 configured as described above is provided at the tip of the protruding portion 23 and the nut 25 (the protruding portion 123 in the case of the connector 120) of the connector 20 in the same manner as in the first to fifth embodiments. It is externally fitted from the side, covered and pressed so as to be integrated therewith, and adhered or adhered to the entire surface of the protruding portion 23 and the nut 25 (the protruding portion 123 in the case of the connector 120). As a result, the box-end refractory material 420 is brought into close contact with the entire protrusion 23 and nut 25 (protrusion 123 in the case of the connector 120) without any gap, and the protrusion 23 and nut 25 (protrusion 123 in the case of the connector 120). ) Can be covered with a predetermined thickness. At this time, the box end portion refractory material 420 can expand or deform the outer peripheral covering portion 421, the outer peripheral covering portion 412, and the tip covering portion 423 through the slit 424, and the protruding portion 23 and the nut 25 (connector 120). In this case, the external fitting operation to the protruding portion 123) can be performed smoothly. In this covering state, the box-end refractory material 420 completely covers the entire outer peripheral surface of the protruding portion 23 of the connector 20 exposed in the internal space of the wiring box 10, 210 with the outer peripheral covering portion 421. The entire inner peripheral surface of 23 is completely covered with the inner peripheral covering portion 422, and the entire distal end surface of the protruding portion 23 is completely covered with the distal end covering portion 423. At this time, the outer peripheral surface of the protruding portion 23 of the connector 20 has a length corresponding to the protruding length in the internal space of the wiring boxes 10 and 210. 10, 210) (in the vicinity of the outer surface). However, since the inner peripheral covering portion 422 is longer than the outer peripheral covering portion 421 and protrudes from the other end of the outer peripheral covering portion 421 by a predetermined length, the inner peripheral covering portion 422 causes the entire inner peripheral surface of the protruding portion 23 of the connector 20. Can be completely coated. Therefore, the length of the outer peripheral covering portion 421 is the same as or slightly the same as the length of the outer peripheral surface of the protruding portion 23 of the connector 20 in the inner space of the wiring boxes 10 and 210 (the protruding length inside the wiring boxes 10 and 210). The length of the inner peripheral covering portion 422 is the same as or slightly longer than the entire length of the inner peripheral surface of the protruding portion 23 of the connector 20.

  Further, as in the case of the first and third embodiments, the box-end refractory material 420 includes the protruding portion 23 and the nut 25 (the protruding portion 123 in the case of the connector 120) of the connector 20 and the wiring boxes 10 and 210. While forming a protective structure to be integrated and protected, the insides of the protrusions 23 and 123 of the connectors 20 and 120 are densely filled into the inside thereof, so that the protrusions 23 and 123 of the connectors 20 and 120 and the wiring box 10 are filled. , 210 are continuously integrated inside and outside to form a protective structure that protects the support structure of the connectors 20, 120 with respect to the wiring boxes 10, 210. Further, as in the case of the first and third embodiments, the box-end refractory material 420 allows the protrusions 23 and 123 of the connectors 20 and 120 and the wiring boxes 10 and 210 to be connected inside and outside even when foamed during fire resistance. A protection structure that protects the support structure of the connectors 20 and 120 with respect to the wiring boxes 10 and 210 is formed by continuous integration. On the other hand, the box-end refractory material 410 includes an outer periphery covering portion 421, an inner periphery covering portion 422, and a tip covering portion 423, and is capable of simultaneously filling and covering the outer peripheral surface, inner peripheral surface, and tip end surface of the connectors 20, 120. Therefore, the filling operation and the covering operation can be performed in a short time by a single operation, and the workability is very good. Furthermore, the box-end refractory material 410 is filled and covered by inserting the inner peripheral covering portion 422 into the connectors 20 and 120, and at the same time, the outer peripheral covering portion 421 automatically covers the outer peripheral surface and the front end surface of the connectors 20 and 120. Therefore, the outer peripheral surface and the front end surface of the connectors 20 and 120 are not forgotten to be covered. If the outer peripheral surface, inner peripheral surface, and front end surface of the connector 20, 120 cannot be completely covered with the box end portion refractory material 420 and there is an exposed portion, the box end portion for another sheet or the like is used. The exposed portion may be additionally covered with the refractory material 420 to completely cover the outer peripheral surface, inner peripheral surface, and tip end surface of the connectors 20 and 120.

  The box-end refractory material 420 is very suitable for the arrangement structure of the refractory hollow wall 5 that is a double wall (hollow wall) as in the first to fifth embodiments. Even in the case of a solid wall box arrangement structure such as a wall (RC wall) or ALC wall, toxic gas due to burning of the protruding portions 23 and 123 exposed in the wiring box 10.210 embedded in the wall Therefore, it can be suitably used. Further, the box-end refractory material 420 has a protruding portion from the through-hole of the metal box to the internal space in addition to the arrangement structure of the boxes on the refractory wall as in the first to fifth embodiments. Specifically as an arbitrary refractory material covering the tip of the protruding portion of the synthetic resin cylindrical attachment held by the boxes by being locked to the through holes of the boxes in a protruding and exposed state Can be

Embodiment 7
FIG. 22 is a cross-sectional view showing the main part of the structure for arranging boxes on the fireproof wall according to Embodiment 7 of the present invention.
As shown in FIG. 22, in the arrangement structure of boxes on the fireproof wall according to the seventh embodiment, the tip of the other end of the flexible conduit 40 is provided on the other side surface 5 </ b> B of the fireproof hollow wall 5. 2 does not protrude from the opening 5b. That is, the other end portion of the flexible conduit 40 is disposed in the second opening 5 b of the fireproof hollow wall 5 so that the tip thereof is substantially flush with the other side surface 5B of the fireproof hollow wall 5. Further, between the inner peripheral surface of the second opening 5b of the refractory hollow wall 5 and the outer peripheral surface of the other end portion of the flexible conduit 40 facing the inner peripheral surface, the piping end of the fifth embodiment Filled with a pipe end portion refractory material 510 made of the same thermally expandable material as the portion refractory material 410, the gap space between the second opening 5b of the refractory hollow wall 5 and the flexible conduit 40 is closed. ing. On the other hand, the pipe end refractory material 510 does not have a brazed tubular shape like the pipe end refractory material 410, but has a simple cylindrical shape. That is, the pipe end portion refractory material 510 has a shape in which the covering portion 412 of the pipe end portion refractory material 410 is omitted. When the flexible wire tube 40 is cylindrical, the tube end portion is made into a corresponding cylindrical shape. When the tube 40 has a rectangular tube shape, the tube 40 has a corresponding rectangular cylinder shape.

  The arrangement structure of the boxes on the fireproof wall according to the seventh embodiment configured as described above can be disposed inside the fireproof hollow wall 5 and the like in the same manner as in the fifth embodiment. The same operation and effect as 5 are exhibited.

Embodiment 8
FIG. 23 is a cross-sectional view showing a main part of a structure for arranging boxes on a fireproof wall according to Embodiment 8 of the present invention.
As shown in FIG. 23, in the arrangement structure of the boxes on the fireproof wall according to the eighth embodiment, the tip of the other end portion of the flexible conduit 40 is the fireproof hollow wall as in the seventh embodiment. 5 does not protrude from the second opening 5b provided on the other side surface 5B. That is, the other end portion of the flexible conduit 40 is disposed in the second opening 5 b of the fireproof hollow wall 5 so that the tip thereof is substantially flush with the other side surface 5B of the fireproof hollow wall 5. Further, between the inner peripheral surface of the second opening 5b of the refractory hollow wall 5 and the outer peripheral surface of the other end portion of the flexible conduit 40 facing the inner peripheral surface, the piping end of the fifth embodiment Filled with a pipe end refractory material 610 made of the same thermally expansible material as the portion refractory material 410, the gap space between the second opening 5b of the fire resistant hollow wall 5 and the flexible conduit 40 is closed. ing. On the other hand, the pipe end refractory material 610 is not a simple cylindrical shape of the pipe end refractory material 510, but integrally covers from the outer peripheral surface of the other end of the flexible conduit 40 to the inner peripheral surface through the tip. In order to be able to do so, it is made into the composite short cylinder shape which consists of the outer peripheral coating | coated part 610a of a large diameter cylindrical shape, the inner peripheral coating | coated part 610b of a small diameter cylindrical shape, and the ring-shaped front-end | tip cover part 610c. Specifically, the outer periphery covering portion 610a of the pipe end refractory material 610 is substantially the same as the gap space between the outer peripheral surface of the flexible electric conduit 40 and the inner peripheral surface of the second opening 5b of the fireproof wall 5. It has a cylindrical shape. That is, the outer peripheral covering portion 610a has an outer peripheral surface that is substantially the same diameter as the inner peripheral surface of the second opening 5b of the fireproof wall 5, contacts the inner peripheral surface of the second opening 5b, and the inner peripheral surface is The outer diameter of the convex portion of the flexible conduit 40 is approximately the same diameter, and comes into contact with the outer peripheral surface of the convex portion. In addition, the inner periphery covering portion 610b has a cylindrical shape that is slightly smaller in diameter than the outer periphery covering portion 610a and is coaxially disposed inside thereof. That is, the outer peripheral surface of the inner peripheral covering portion 610b has substantially the same diameter as the inner peripheral surface of the concave portion of the flexible conduit 40, and comes into contact with the inner peripheral surface of the concave portion. In addition, the inner periphery covering part 610b can also set the internal diameter and inner peripheral surface shape so that the outer peripheral surface may contact | abut to the outer peripheral surface of the electric wire 41 in the flexible conduit 40. Furthermore, the tip covering portion 610c connects between one end in the axial direction of the outer periphery covering portion 610a and one end in the axial direction of the inner periphery covering portion 610b, and corresponds to the tip end surface of the other end portion of the flexible conduit 40. Form a plate. Note that the pipe end portion refractory material 610 has an outer peripheral covering portion 610a and an inner peripheral covering portion 610b that are substantially the same length as the axial length of the second opening 5b of the refractory wall 5, and the refractory wall corresponding to the tip covering portion 610c. 5 protrudes from the other side surface 5B. Further, the overall shape of the pipe end refractory material 610 is the corresponding cylindrical shape when the flexible conduit 40 is cylindrical, as in the seventh embodiment, and the flexible conduit 40 is a rectangular tube. In some cases, it is a corresponding rectangular cylinder. Further, like the box end refractory material 420 of the sixth embodiment, one circumferential portion of the pipe end refractory material 610 is completely cut in the radial direction to form a slit, and the pipe end is formed through the slit. The part refractory material 610 may be enlarged and deformed.

  The pipe-end refractory material 610 configured as described above is fitted from the distal end side of the other end of the flexible conduit 40 in the same manner as in the fifth and seventh embodiments, and is connected to the other end. Cover and press so as to be integrated, and adhere or adhere to the entire outer peripheral surface, inner peripheral surface and tip surface of the other end. As a result, the pipe end refractory material 610 can be brought into close contact with the entire other end of the flexible conduit 40 without a gap, and the entire other end of the flexible conduit 40 can be covered with a predetermined thickness. At this time, the outer peripheral covering portion 610a of the pipe end refractory material 610 forms a gap space between the outer peripheral surface of the other end of the flexible conduit 40 and the inner peripheral surface of the second opening 5b of the fireproof wall 5. Close and fill. Further, the inner peripheral covering portion 610b substantially closes and fills the gap space between the inner peripheral surface of the other end portion of the flexible conduit 40 and the inner electric wire 41. Further, the tip covering portion 610c completely covers the tip end surface of the other end portion of the flexible conduit tube 40. At this time, in the case where a slit is provided in the pipe end refractory material 610, the outer peripheral covering portion 610a, the inner peripheral covering portion 610b, and the tip covering portion 610c can be expanded or deformed via the slit. The fitting operation | work to the other end part of the conduit 40 can be performed smoothly.

  Further, in this covered state, the pipe-end refractory material 610 is separated from the second opening 5b of the refractory wall 5 and the flexible conduit tube 40 by the outer peripheral covering portion 610a, as in the fifth and seventh embodiments. A protective structure that protects the other end of the flexible conduit 40 by filling a gap space with the outer peripheral surface of the end is configured. On the other hand, the pipe end portion refractory material 610 is formed from the distal end covering portion 610c and the inner peripheral covering portion 610b continuous to the outer periphery covering portion 610a from the other end end of the flexible conduit 40 to the inside (gap between the electric wire 41 and the gap). A protective structure that protects the support structure at the other end of the flexible conduit 40 with respect to the second opening 5b of the fire wall 5 is formed. Further, as in the case of the fifth and seventh embodiments, the pipe end portion refractory material 610 is the other end of the flexible conduit 40 with respect to the second opening 5b of the refractory wall 5 even when foamed during fire resistance. A protective structure that protects the supporting structure is formed by integrating the parts. In addition, the pipe end portion refractory material 610, when fire-resistant, the outer peripheral covering portion 610a thermally expands and enters the concave portion of the outer peripheral surface of the flexible conduit 40, and the second opening 5b of the refractory wall 5 The gap space between the inner peripheral surface and the outer peripheral surface of the other end of the flexible conduit 40 is completely closed and filled. Further, the pipe end portion refractory material 610 has an inner peripheral covering portion 610b that thermally expands during fire resistance, and also enters a recess in the inner peripheral surface of the flexible conduit 40, and the other end portion of the flexible conduit 40 The gap space between the inner peripheral surface of the wire and the internal electric wire is almost completely closed and filled.

  On the other hand, the pipe end refractory material 610 includes an outer peripheral covering portion 610a, an inner peripheral covering portion 610, and a distal end covering portion 610c. The outer peripheral surface of the other end portion of the flexible conduit 40 and the second opening of the fireproof wall 5 are provided. 5b, a gap space between the inner peripheral surface of the other end of the flexible conduit 40 and / or an inner peripheral surface of the flexible conduit 40 and the inner wire 41, and a flexible wire Since the distal end surface of the other end of the tube 40 is preliminarily formed into a shape that can be filled and covered at the same time, the filling operation and the covering operation can be performed in a short time in a single operation, and the workability is very good. Further, the pipe end portion refractory material 610 is inserted and filled with the inner periphery covering portion 610 b inside the other end portion of the flexible conduit 40, and at the same time, the outer periphery covering portion 610 a is the other end of the flexible conduit 40. In order to automatically cover the gap space between the outer peripheral surface of the section and the second opening 5b of the fire wall 5 and the tip surface of the other end of the flexible conduit 40, the outer periphery of the flexible conduit 40 Never forget to cover the gap space and the tip of the side.

  In addition, although the fireproof material 610 for pipe ends is very suitable for the arrangement structure of the boxes of the fireproof hollow wall 5 which becomes a double wall (hollow wall) like the said Embodiments 1-5, it is concrete. Even in the case of a solid wall box arrangement structure such as a wall (RC wall) or ALC wall, the flexible conduit 40 exposed or protruding from the second opening of the wall and the internal electric wire 41 are combusted. Since generation | occurrence | production of toxic gas etc. can be suppressed, it can be used suitably again. Further, the fireproof material 610 for the end of publication is an arbitrary fireproof material that covers the distal end portion of the flexible piping material in addition to the arrangement structure of the boxes on the fireproof wall as in the first to fifth embodiments. Can be embodied.

  The arrangement structure of the boxes on the fireproof wall according to the eighth embodiment configured as described above can be disposed inside the fireproof hollow wall 5 and the like in the same manner as in the fifth embodiment. The same operation and effect as 5 are exhibited.

Embodiment 9
FIG. 24 is a cross-sectional view showing an internal structure of a concrete wall provided with a structure for arranging boxes on a fireproof wall according to Embodiment 9 of the present invention.
As shown in FIG. 24, the arrangement structure of boxes on the fireproof wall according to the ninth embodiment is provided on a concrete wall 705 as a solid wall. Specifically, the arrangement structure of the boxes on the fireproof wall according to the ninth embodiment is opposed to one side 705A of the concrete wall 705 from the first opening 705a provided on one side 705A of the concrete wall 705. On the other side surface 705B, there is a piping path inside that leads from the first opening 705a to a second opening 705b provided at a position spaced a predetermined distance upward. As in the fifth embodiment, in the arrangement structure of boxes on the fireproof wall according to the ninth embodiment, the wiring box (switch box) 210 faces the first opening 705a in the internal space of the concrete wall 705. It is arranged at the position to do. The wiring box 210 is disposed so that the surface on the opening 210 a side faces the first opening 705 a of the concrete wall 705, and the opening 210 a is disposed at a position facing the first opening 705 a of the concrete wall 705. is doing. Furthermore, the wiring box 210 is arranged with the upper surface provided with the insertion hole 213a facing upward inside the concrete wall 705, and the insertion hole 213a is arranged at a position corresponding to the upper inside of the concrete wall 705. . In the insertion hole 213a of the wiring box 210, a connector 20 made of synthetic resin as an attachment tool is attached from above in the same manner as in the first to fourth embodiments. A coating cover 215 is attached to the opening 210 a of the wiring box 210, and a mounting frame 216 is fixed to the concrete wall 705 so as to face the outer surface of the coating cover 215. Further, the internal space of the wiring box 210 is covered and filled with the refractory material 30 for the end of the box so as to cover the entire protrusion 23 of the connector 20 and the periphery thereof in the same manner as in the fifth embodiment. Yes. Furthermore, the other end portion of the flexible conduit 40 is inserted into the second opening 705b of the concrete wall 705, and the tip end portion projects outside. In the gap space between the outer peripheral surface of the other end of the flexible conduit 40 and the inner peripheral surface of the second opening 705b of the concrete wall 705, the brazing is performed in the same manner as in the seventh embodiment. A tubular pipe end refractory material 410 is filled to close the gap space and cover the outer peripheral edge of the second opening 705 b of the concrete wall 705.

  The arrangement structure of the boxes on the fireproof wall according to the ninth embodiment configured as described above can be arranged inside the concrete wall 705 or the like in substantially the same manner as in the fifth embodiment. 5 exhibits substantially the same operation and effect as 5.

Embodiment 10
FIG. 25 is a cross-sectional view showing the internal structure of an ALC wall provided with a structure for arranging boxes on a fireproof wall according to Embodiment 10 of the present invention.
As shown in FIG. 25, the arrangement structure of boxes on the fireproof wall according to Embodiment 10 is provided on the ALC wall 805 as a solid wall. The ALC wall includes an ALC part 805x and a mortar part 805y. Specifically, the arrangement structure of the boxes on the fireproof wall according to the tenth embodiment is opposed to one side surface 805A of the ALC wall 805 from the first opening 805a provided on one side surface 805A of the ALC wall 805. On the other side surface 805B, there is a piping path inside that leads from the first opening 805a to the second opening 805b provided at a position spaced a predetermined distance upward. In the arrangement structure of the boxes on the fireproof wall according to the tenth embodiment, the wiring box (switch box) 210 is arranged in the inner space of the ALC wall 705 in the same manner as in the ninth embodiment. It is disposed at a position facing the opening 805a. The wiring box 210 is disposed so that the surface on the opening 210a side faces the first opening 805a of the ALC wall 805, and the opening 210a is disposed at a position facing the first opening 805a of the ALC wall 805. is doing. Furthermore, the wiring box 210 is disposed with the upper surface provided with the insertion hole 213a facing upward inside the ALC wall 805, and the insertion hole 213a is arranged at a position corresponding to the upper inside of the ALC wall 805. . In addition, the other end of the flexible conduit 40 is inserted into the second opening 805b of the ALC wall 805, and the tip of the flexible conduit 40 protrudes to the outside. Then, in the gap space between the outer peripheral surface of the other end of the flexible conduit 40 and the inner peripheral surface of the second opening 805b of the ALC wall 805, as in the case of the seventh or ninth embodiment, A flanged tubular end refractory material 410 is filled to close the gap space and cover the outer peripheral edge of the second opening 805b of the ALC wall 805.

  The arrangement structure of the boxes on the fire wall according to the tenth embodiment configured as described above can be arranged inside the ALC wall 805 or the like in substantially the same manner as the fifth embodiment. 5 exhibits substantially the same operation and effect as 5.

  By the way, in the arrangement structure of boxes on the fire wall according to the present invention, a metal coating cover is attached to the opening 10a of the wiring box 10 of the first embodiment or the second embodiment so as to cover the opening. It may be. Further, in the arrangement structure of the boxes on the fireproof wall according to the fifth embodiment, after the electric wire (cable) 41 is wired to the inside of the switch box 210, the box fixture 415 is covered with the fireproof material 30. However, according to the present invention, when the box fixture as the attachment tool is covered with a refractory material, the exposed portion of the box fixture inside the boxes is covered with the refractory material before wiring the wires inside the boxes. It may be. Furthermore, the fire wall to which the present invention is applied includes a fire wall (for example, a fire-resistant hollow ceiling wall such as a fire-resistant double ceiling wall) and a fire floor wall (for example, a fire-resistant hollow floor) in addition to a fire wall (a fire wall in a narrow sense). It can also be applied to walls). Moreover, it can use suitably for fireproof hollow ceilings, such as a double ceiling, and a fireproof hollow floor other than hollow walls, such as a lightweight partition wall. Or it is also possible to apply to a reinforced concrete wall or a reinforced concrete slab (ceiling, floor). Furthermore, the fire wall to which the present invention is applied is only required to exhibit a fire resistance function at least on one side in the thickness direction. For example, in the case of a fire wall, only the wall plate material on the one side in the thickness direction is reinforced gypsum board, etc. The other wall plate material may be a non-fireproof wall plate material.

  Moreover, in the arrangement structure of the boxes on the fire wall according to the present invention, when the conduit connector is attached to the boxes as the attachment as in the first embodiment, the conduit and the electric wire are constituent elements. However, in other cases, for example, in the case of a box fixture, a conduit or the like is not an essential component. Moreover, in the arrangement structure of the boxes to the fireproof wall according to the present invention, the conduit connector and the box fixing tool are exemplified as the mounting tool, but the present invention is used when other mounting tools are used. It can also be applied. For example, the present invention can also be applied to boxes that fix attachments for piping (such as water supply pipes) around water. Moreover, as a connector as an example of a conduit connector, an arbitrary connector can be used other than the nut tightening type and the one-touch insertion type as described above. That is, the present invention is applied to an arbitrary connector or the like that latches and holds on the periphery of a through hole such as a side wall of a box or the like in a state where a part of the connector or the like protrudes and is exposed inside through the through hole of the box or the like. Can do. In particular, when a connector or the like is locked and held in the box by sandwiching the peripheral edge of the through hole of the box or the like, as described above, the integration of the connector or the like into the box or the like by a refractory material (protective structure function) It becomes effective. In the present invention, the protective structure formed of the refractory material may be a protective structure that can protect the support structure such as a lightweight conduit connector (connector) and assist the support relationship, Therefore, the refractory material can be composed of a foam material whose main material is the flame retardant rubber material as described above. Furthermore, the refractory material sheet according to the sixth embodiment can be suitably used in the arrangement structure of the boxes on the refractory wall according to the first to fifth embodiments, and exhibits the above-described specific actions and effects. Of course, it can also be used for boxes other than metal boxes and other fireproof structures.

  In addition, as described above, the refractory material for pipe ends used in the present invention has the second opening (the refractory hollow wall 5 or the concrete wall on the side surface of the wall on which the other end of the flexible pipe material is disposed. If it is not necessary to cover the outer peripheral edge of the second opening 5b, 705b) of the 705, it is not necessary to provide the covering portion 412 like the pipe edge refractory material 410 of the fifth embodiment, but the fire resistance is improved. From such points, it is preferable to provide a covering portion. Moreover, in this invention, when arrange | positioning the other end part of a flexible piping material in the 2nd opening of a wall, as mentioned above, the refractory material for piping end parts makes a flexible piping material 2nd of a wall. Although it functions as a protective structure for supporting the opening, it is preferable to fix the other end of the flexible piping material in the wall with another pipe fixture. Further, in the present invention, the other end of the flexible piping material is exposed when the tip protrudes from the second opening of the wall (Embodiment 5) or without protruding (Embodiment 7). However, when the tip of the other end of the flexible piping material is exposed without protruding from the second opening of the wall, the tip of the other end of the flexible piping material is It is also conceivable that it is not substantially flush with the outer surface but is located inside (in the middle) of the second opening in the wall. In this case, the refractory material for the pipe end portion is formed in such a manner that the outer peripheral surface of the other end portion of the flexible pipe material and the inner periphery of the second opening of the wall are located inside (in the middle of) the second opening of the wall. It fills so that the clearance gap between surfaces (especially site | part facing the outer peripheral surface of a flexible piping material) may be obstruct | occluded. That is, in this case, the pipe end refractory material has a short cylindrical shape with an axial length shorter than that of the fifth or seventh embodiment. Even in this case, as in the eighth embodiment, the filling may be performed by extending to the inner peripheral surface.

FIG. 1 is a perspective view schematically showing an arrangement structure of boxes on a fireproof wall according to Embodiment 1 of the present invention. FIG. 2 is a front view showing a wiring box as a box used in the arrangement structure of the boxes on the fireproof wall according to Embodiment 1 of the present invention when viewed from the opening side. FIG. 3 is a side view showing a wiring box having a structure in which boxes are arranged on the fireproof wall according to Embodiment 1 of the present invention. FIG. 4 is an exploded perspective view showing a connector as a conduit connector used in the structure for arranging boxes on the fireproof wall according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view showing the relationship between the wiring box, the connector, and the refractory material in the arrangement structure of the boxes on the fireproof wall according to the first embodiment of the present invention, and the wiring box is on the lower side (connector mounting side). Only shown with virtual lines. FIG. 6 is a cross-sectional view showing the relationship between the wiring box, the connector, and the refractory material in the arrangement structure of the boxes on the refractory wall according to Embodiment 2 of the present invention. FIG. 7: is a front view which shows the fireproof hollow wall which provided the arrangement | positioning structure of the boxes to the fireproof wall which concerns on Embodiment 3 of this invention seeing from the indoor side. FIG. 8 is a front view showing a switch box as a box used in the arrangement structure of the boxes on the fire wall according to the third embodiment of the present invention when viewed from the opening side. FIG. 9 is a side view showing a switch box having a structure for arranging boxes on a fireproof wall according to Embodiment 3 of the present invention. FIG. 10 is a cross-sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 3 of the present invention. FIG. 11 is a cross-sectional view showing the arrangement structure of boxes on the fireproof wall according to the third embodiment of the present invention when the fireproof material portion of the switch box is viewed from the bottom side, and the upper half shows the fireproof material outside the connector. The lower half shows a state where the outside of the connector is covered with a refractory material by a virtual line. FIG. 12 is a cross-sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 4 of the present invention. FIG. 13 is a sectional view showing the internal structure of a fireproof hollow wall provided with a structure for arranging boxes on the fireproof wall according to Embodiment 5 of the present invention. FIG. 14 is a perspective view showing a refractory material for a pipe end portion used in a structure for arranging boxes on a refractory wall according to Embodiment 5 of the present invention, as viewed from the covering portion side. FIG. 15: is a perspective view which shows the refractory material for pipe ends used in the arrangement structure of the boxes to the refractory wall concerning Embodiment 5 of this invention seeing from the filling part side. FIG. 16: is a top view which shows the refractory material for pipe ends used with the arrangement | positioning structure of the boxes to the refractory wall which concerns on Embodiment 5 of this invention. FIG. 17: is a side view which shows the refractory material for pipe ends used with the arrangement structure of the boxes to the refractory wall which concerns on Embodiment 5 of this invention. FIG. 18 is a perspective view showing the pipe-end refractory material used in the structure for arranging boxes on the refractory wall according to Embodiment 6 of the present invention as seen from the tip covering portion side. FIG. 19 is a perspective view showing a pipe-end refractory material used in the structure for arranging boxes on a refractory wall according to Embodiment 6 of the present invention when viewed from the side opposite to the tip covering portion. FIG. 20 is a plan view showing a pipe-end refractory material used in a structure for arranging boxes on a refractory wall according to Embodiment 6 of the present invention. FIG. 21 is a side view showing a refractory material for pipe ends used in the structure for arranging boxes on the refractory wall according to Embodiment 6 of the present invention. FIG. 22 is a cross-sectional view showing the main part of the structure for arranging boxes on the fireproof wall according to Embodiment 7 of the present invention. FIG. 23 is a cross-sectional view showing a main part of a structure for arranging boxes on a fireproof wall according to Embodiment 8 of the present invention. FIG. 24 is a cross-sectional view showing an internal structure of a concrete wall provided with a structure for arranging boxes on a fireproof wall according to Embodiment 9 of the present invention. FIG. 25 is a cross-sectional view showing the internal structure of an ALC wall provided with a structure for arranging boxes on a fireproof wall according to Embodiment 10 of the present invention.

Explanation of symbols

5: Fireproof hollow wall (wall), 5A: One side surface, 5a: First opening 5B: Other side surface, 5b: Second opening 10: Wiring box (boxes), 13a: Through hole (mounting hole)
20: Connector (mounting tool), 23: Projection part, 30: Refractory material for box end part 40: Flexible electric wire tube (flexible piping material), 41: Electric wire (internal insertion member)
120: Connector (attachment tool), 123: Projection part 210: Wiring box (boxes), 213a: Through hole (attachment hole)
215: Coating cover, 330: Second refractory material 410: Refractory material for pipe end, 411: Filling part, 412: Covering part 420: Refractory material for box end part, 421: Inner peripheral covering part, 422: Outer peripheral part Covering part 423: Tip covering part 510: Refractory material for pipe end part, 610: Refractory material for pipe end part 610a: Outer peripheral covering part, 610b: Inner peripheral covering part, 610c: Tip covering part 705: Concrete wall (wall), 705A: one side, 705a: first opening 705B: other side, 705b: second opening 805: ALC wall (wall), 805A: one side, 805a: first opening 805B: other side, 805b: second Opening

Claims (7)

From the first opening provided on one side of the wall to the fireproof wall having a piping path extending from the first opening provided on one side or the other side of the wall to the second opening provided at a position separated from the first opening An arrangement structure of boxes,
Metal boxes disposed inside the wall and having an opening disposed at a position facing the first opening of the wall and a through-hole disposed at a position corresponding to the interior of the wall;
A synthetic resin mounting tool that is inserted into the through hole of the boxes, and is locked and attached to the boxes in a state where one end portion that is the insertion side is exposed in the internal space of the boxes,
One end is attached to the other end of the attachment, and a flexible pipe made of synthetic resin that exposes or projects the other end from the second opening of the wall;
A refractory material for a box end that covers the entire exposed portion of the attachment in the internal space of the boxes;
To a fireproof wall, comprising: a fireproof material for a pipe end that is filled so as to close a gap between an exposed portion or a protruding portion of the other end of the flexible piping material and an opening on the other side surface of the wall. Arrangement structure of boxes.   The pipe end refractory material is made of a heat-expandable fireproof seal material, and is thermally expanded by heating to crush the flexible piping material, and the flexible piping material and the flexible piping at the crushing location. 2. The fireproof wall according to claim 1, wherein the outer peripheral surface of the flexible piping material is filled and covered with a filling amount necessary for narrowing a gap space between the internal insertion member in the material. Arrangement structure of boxes.   The pipe end refractory material is a gap space between the outer peripheral surface of the exposed portion or the protruding portion of the other end of the flexible piping material and the second opening of the wall, or the flexible piping material. A filling portion having a substantially short cylindrical shape corresponding to a gap space between the outer peripheral surface of the coupling fitted on the outer peripheral surface of the exposed portion or the protruding portion and the second opening of the wall; and 3. A structure for arranging boxes on a fireproof wall according to claim 1 or 2, further comprising a flange-shaped covering portion integrally projecting outward from one end in the axial direction. The attachment has a protruding portion inserted into the through hole of the boxes, and the protruding portion is locked to the through hole of the boxes in a state where the protruding portion protrudes into the internal space of the boxes and is exposed. Is held by the boxes, and has a cylindrical shape made of synthetic resin in which one end opening at the tip of the protruding portion is disposed inside the boxes,
The box-end refractory material has a short cylindrical shape corresponding to the outer peripheral surface of the protruding portion of the attachment, and a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the mounting portion. An inner periphery covering portion disposed coaxially inside the outer periphery covering portion, and a connection between one end of the outer periphery covering portion and one end of the inner periphery covering portion, and a tip surface of the protruding portion of the attachment portion The arrangement structure of the boxes to the fireproof wall according to any one of claims 1 to 3, further comprising a tip covering portion having a corresponding ring plate shape. Metal boxes that are arranged inside the wall and that have an opening at a position facing the indoor side and a through hole at a position corresponding to the inside of the wall;
It has a protrusion inserted into the through hole of the boxes, and the protrusion is held in the boxes by being locked to the through hole of the boxes with the protrusion protruding into the internal space of the boxes. And a cylindrical attachment made of synthetic resin in which one end opening at the tip of the protruding portion is disposed inside the boxes, and
An outer peripheral covering portion corresponding to the outer peripheral surface of the protruding portion of the attachment, and a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the attaching portion, and coaxial inside the outer peripheral covering portion. A tip cover that connects the inner periphery covering portion disposed on the outer periphery covering portion and one end of the outer periphery covering portion and one end of the inner periphery covering portion, and forms a ring plate shape corresponding to the tip end surface of the protruding portion of the attachment portion. And a box-end refractory material having a portion. A structure for arranging boxes on a refractory wall. A cylindrical mounting made of synthetic resin that is held by the boxes by engaging the protruding portions with the through holes of the boxes with the protruding portions protruding from the through holes of the metal boxes into the internal space and exposed. A refractory material covering the tip of the protruding portion of the tool,
An outer peripheral covering portion having a short cylindrical shape corresponding to the outer peripheral surface of the protruding portion of the attachment; and
An inner peripheral covering portion that is formed in a cylindrical shape corresponding to the inner peripheral surface of the protruding portion of the attachment portion and is coaxially disposed inside the outer peripheral covering portion;
A fireproofing device comprising: a tip covering portion that connects one end of the outer periphery covering portion and one end of the inner periphery covering portion and forms a ring plate shape corresponding to the tip end surface of the protruding portion of the attachment portion. Wood. It is a refractory material that covers the tip of the flexible piping material,
An outer peripheral covering portion having a short cylindrical shape corresponding to the outer peripheral surface of the distal end portion of the flexible piping material;
An inner peripheral covering portion that is formed in a cylindrical shape corresponding to the inner peripheral surface of the distal end portion of the flexible piping material and is coaxially disposed inside the outer peripheral covering portion;
A tip cover portion that connects between one end of the outer periphery cover portion and one end of the inner periphery cover portion and has a ring plate shape corresponding to the tip face of the tip portion of the flexible piping material, Refractory material.

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