JP2014070678A - Through-hole fire measure tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a through-hole fire measure tool that can be easily installed in a through-hole under a state in which it is hardly released against the through-hole even in a case that an inner diameter is displaced from its designed size.SOLUTION: The present invention relates to a through-hole fire measure tool T for use in inserting a long body installed in a through-hole H belonging to a block body in which a cylindrical surface forming part of a base member 1 constituted to form a cylindrical surface 1a capable of covering an inner peripheral surface h1 of the through-hole H or constituted to enable the cylindrical surface 1a to be formed is provided with resilient salients 3 that are resiliently contacted with the inner peripheral surface h1 of the through-hole H under an adhered state against the through-hole H.

Description

  The present invention relates to air-conditioning pipes and cables for through holes belonging to a partition body such as a through hole formed through a partition body such as a wall of a building or a floor slab, or a through hole formed by penetrating a sleeve through the partition body. The present invention relates to a fire prevention device for a through-hole that is used by being inserted into and attached to the through-hole when inserting a long body such as a water supply / drain pipe.

  As this type of through-hole fire prevention device, the outer diameter of a cylindrical base material formed by forming a cylindrical surface capable of covering the inner peripheral surface of the through-hole is set to the inner diameter dimension of the through-hole to be used. There is one that can be easily inserted and mounted in a state in which it is difficult to be removed from a through hole having a diameter to be used by setting the dimensions to be approximately equal (slightly larger) (see Patent Document 1 below).

JP 2011-117574 A

  However, since it is difficult to form a through hole in the partition body with the designed inner diameter due to factors such as work place, worker, work tool, etc., there are often some errors in the inner diameter of the through hole, In the above conventional through-hole fire protection device, if the inner diameter of the through hole is shifted to the small diameter side, it cannot be inserted into the through hole, and if the inner diameter of the through hole is shifted to the larger diameter side, it can be inserted into the through hole. For example, when the inner diameter of the through hole is deviated from the design dimension, there is a serious problem that it is difficult to mount in a state where it is difficult to be removed.

  The present invention has been made in view of the above-described actual situation, and the main problem is that even when the inner diameter of the through hole is deviated from the design dimension, it can be easily mounted in a state in which it is difficult to be detached from the through hole. It is in providing a through-hole fire protection device that can be used.

The first characteristic configuration of the present invention is a through-hole fire prevention device for insertion of a long body that is attached to a through-hole belonging to a partition body side,
The inner periphery of the through hole in the mounting state with respect to the through hole in the cylindrical surface forming part of the base material on which the cylindrical surface capable of covering the inner peripheral surface of the through hole is formed or configured to be able to form the cylindrical surface An elastic convex portion that elastically contacts the surface is formed to protrude.

  According to the above configuration, it is possible to attach to the through hole in a state of elastically deforming the elastic convex portion formed to protrude from the cylindrical surface forming portion in accordance with the attaching operation to the through hole, and to the through hole. In the mounted state, while covering the inner peripheral surface of the through hole with the cylindrical surface of the base material, the elastic convex portion can be elastically contacted with the inner peripheral surface of the through hole on the outer peripheral surface side. The relative movement resistance between the base material and the through hole can be increased by elastic contact with the inner peripheral surface of the through hole. Therefore, it is possible to mount in a state in which it is difficult to be detached from the through hole.

  In addition, even when the inner diameter of the through hole deviates from the design dimension, if the elastic convex portion is within the elastic deformation range of the elastic convex portion, the elastic convex portion is in elastic contact with the inner peripheral surface of the through hole in the mounted state with respect to the through hole. Therefore, even in such a case, it can be attached to the through hole in a state where it is difficult to come off without requiring a separate operation.

  Therefore, even when the inner diameter of the through hole deviates from the design dimension, it can be easily mounted in a state in which it does not easily come off from the through hole.

  According to a second characteristic configuration of the present invention, the elastic convex portion has a gap formed between the inner peripheral surface of the through hole and the cylindrical surface of the base material in a mounting state with respect to the through hole. It exists in the point which is provided in the state elastically contacted for at least one round of the internal peripheral surface of a through-hole so that it might interrupt | block.

  According to the above configuration, since the gap formed between the inner peripheral surface of the through hole and the cylindrical surface of the substrate is blocked by the elastic convex portion in the axial direction of the through hole in the mounting state with respect to the through hole, the elasticity By blocking the gap in a state of being in close contact with the inner peripheral surface of the through hole by the convex portion, it is possible to suppress the passage of flame, heat, and smoke during a fire through the gap.

  In addition, when attached to the through hole of the wall, it is easy to move downward due to gravity, so even if a gap concealing hook is provided on the front side of the wall, there may be a disadvantage that the upper region of the through hole is exposed to the outside, According to the above configuration, since it can be held on the radial center side of the through-hole by the urging force from the entire periphery by the elastic convex portion, it is possible to prevent such inconvenience from occurring.

  The third characteristic configuration of the present invention is that the elastic convex portion is provided in a state in which the elastic convex portion is dispersed in a plurality of locations in the through-hole axial direction in a longitudinal sectional view along the through-hole axial direction in a mounted state with respect to the through-hole. is there.

  According to the above configuration, the elastic convex portion and the inner peripheral surface of the through hole are elastically contacted at a plurality of positions (a plurality of positions in the insertion depth direction of the through hole) that are separated in the axial direction of the through hole in the mounting state with respect to the through hole. Therefore, it is possible to stabilize the mounting posture as compared to elastic contact with the inner peripheral surface of the through hole at one position in the axial direction of the through hole.

  Therefore, it is possible to prevent the relative movement resistance between the base material and the through-hole from being unexpectedly lowered due to the change in the elastic contact state of the elastic projection due to the change in the mounting posture.

  A fourth characteristic configuration of the present invention is that the elastic convex portion is configured in a thin plate shape or a protrusion shape that can elastically contact the inner peripheral surface of the through hole in a state of elastic bending deformation or elastic collapse deformation.

  According to the above-described configuration, the tip of the thin plate-like or protrusion-like elastic convex portion is elastically deformed into a curved posture or a tilted posture facing the insertion port side with the insertion operation to the through hole, and the elastic restoring force from the elastic deformation The thin plate-like or protrusion-like elastic convex portion is attached in an elastic manner to the inner peripheral surface of the through hole.

  That is, according to this configuration, the elastic convex portion is inserted into the through hole in a posture with a large movement resistance toward the insertion port side with the tip side facing the insertion port side when the elastic projection is thin or projecting in the mounting state with respect to the through hole. Since it can be elastically contacted with the peripheral surface, it can be mounted in a state in which it is more difficult to be detached from the through hole.

  The fifth characteristic configuration of the present invention is the state between the inner peripheral surface of the base material and the outer peripheral surface of the long body in a state of being attached to the through hole and in a state where the long body is inserted inside the base material. The base material is provided with a shielding part capable of shielding at least a part of the gap.

  According to the above configuration, the gap between the inner peripheral surface of the base material and the outer peripheral surface of the long body in a state of being attached to the through-hole and in a state where the long body is inserted inside the base material. Since at least a part can be shielded by the shielding portion, it is possible to suppress the passage of the flame, heat and smoke during the fire through the gap.

The perspective view which shows the through-hole fire prevention tool of 1st Embodiment The bottom view which shows the through-hole fire prevention tool of 1st Embodiment (A) Longitudinal sectional view showing the use state of the through-hole fire prevention device of the first embodiment, (b) Longitudinal sectional view showing the use state of the through-hole fire prevention device of the first embodiment, (c) First implementation Longitudinal sectional view showing the state of use of the through-hole fire protection device of the form (A) The top view which shows the through-hole fire protection device of 2nd Embodiment, (b) The side view which shows the through-hole fire protection device of 2nd Embodiment, (c) The through-hole fire protection device of 2nd Embodiment A perspective view showing a cylindrical deformation state (A) Longitudinal sectional view showing the usage state of the through-hole fire protection device of the second embodiment, (b) Vertical sectional view showing the usage state of the through-hole fire protection device of the second embodiment. The bottom view which shows the use condition of the through-hole fire prevention tool of 2nd Embodiment

[First Embodiment]
1 and 2, for example, as shown in FIG. 3 (c), a long body P such as an air-conditioning pipe or an electric wire is attached to a through-hole H formed through a floor slab S that is an example of a partition body. A through-hole fire protection device T used by being inserted into the through-hole H when inserted is shown. The through-hole fire protection device T has a cylindrical surface 1a that can cover the inner peripheral surface h1 of the through-hole H. It is comprised from the substantially cylindrical base material 1 provided and comprised.

  The base material 1 is integrally formed from a heat-expandable heat-resistant rubber (an example of an elastic material) having heat-expandability and heat-resistance so that the inside of the through hole H can be expanded and closed in a fire. The cylindrical surface 1a is configured as a cylindrical surface having an outer diameter A1 that is smaller than the inner diameter Ah of the through hole H, as shown in FIG.

  On the one end side in the axial direction of the base material 1, in the circumferential direction provided with a positioning function and a makeup function capable of coming into contact with the opening peripheral portion of the through hole H on one side surface (inner side surface, surface) of the floor slab S. An annular flange 2 extending along the projection is integrally formed so as to protrude radially outward.

  And the inner peripheral surface h1 of the through-hole H in the mounting state with respect to the through-hole H in several places of the axial direction in the outer peripheral surface (this example cylindrical surface 1a) which is the cylindrical surface formation site | part of the said base material 1 is demonstrated. A plurality of elastic convex portions 3 each having an anti-separation function and a posture maintaining function that elastically contact with each other are formed integrally and projecting radially outward.

  Specifically, as shown in FIG. 3A, the protruding dimension of the elastic convex portion 3 is such that the outer diameter A3 of the location where the elastic convex portion 3 is formed is larger than the inner diameter Ah of the through hole H. 3 (b) and 3 (c), the elastic convex portion 3 is formed on the inner peripheral surface h1 of the through hole H at the elastic contact portion with the through hole H, as shown in FIGS. It is configured to be in an elastically deformed state in which an elastic restoring force is applied.

  In this example, the length in the axial direction of the base material 1 is made larger than the thickness of the floor slab S, and in addition to the region located in the through hole H in the mounted state with respect to the through hole H, the floor slab S The elastic convex part 3 is provided also in the area | region of the axial direction other end side which protrudes in the back side space.

  Each of the elastic convex portions 3 blocks a gap formed between the inner peripheral surface h1 of the through hole H and the cylindrical surface 1a of the base member 1 in the through hole axial direction in the mounting state with respect to the through hole H. In order to obtain, it is comprised by the annular | circular shape covering the perimeter of the cylindrical surface 1a.

  Each elastic convex portion 3 is configured in a thin plate shape that undergoes elastic bending deformation (an example of elastic bending deformation or elastic collapse deformation) when inserted into the through hole H (see FIG. 3).

  Furthermore, in the axial center direction intermediate part of the inner peripheral surface 1b of the base material 1, the base material 1 is attached to the through hole H and the long body P is inserted inside the base material 1. A shielding portion 4 for shielding a gap between the inner circumferential surface 1b of the long body P and the outer circumferential surface of the elongated body P is integrally formed to project radially inward.

  The shielding part 4 is composed of a large number of substantially triangular shielding piece parts 4a divided by radial cut lines 6 centering on the axis of the substrate 1 (that is, the axis of the cylindrical surface 1a). Yes.

  And the slit 5 which cut | disconnects one place of the outer peripheral part of the through-hole fire-protection tool T along the axial center direction of the base material 1 is formed in this through-hole fire-protection tool T. In other words, the through-hole fire protection device T is configured to accommodate the elongated body P through the slit 5 in the expanded state by elastically expanding the slit 5.

  Next, a through-hole fire prevention method using the through-hole fire prevention tool T configured as described above will be described.

  First, as shown to Fig.3 (a), the slit 5 of the through-hole fire-protection tool T is elastically expanded (illustration omitted), and it is previously inserted by the through-hole H through the slit 5 of the expanded state. The long body P is accommodated in the cylindrical base material 1 of the through-hole fire protection device T. At this time, the elongated body P accommodated in the base material 1 is held at the axial center side of the base material 1 by a large number of shielding pieces 4 a formed inside the base material 1.

  Next, as shown in FIG. 3B, the through-hole fire protection device T that is externally fitted to the long body P is moved toward the through-hole H in a state of sliding with respect to the long body P. .

  In this movement process, the plurality of thin elastic protrusions 3 on the outer peripheral surface side of the base material 1 are in contact with the inner peripheral surface h1 of the through hole H, and the tip side is the insertion port side of the through hole H (that is, the chamber It is in a curved posture facing inward) and elastically contacts the entire circumference of the inner peripheral surface h1 of the through hole H, and the base material 1 is urged toward the radial center of the through hole H.

  In other words, the elastic convex portion 3 serves as a guide means for guiding the base material 1 to a predetermined position in the radial direction of the through hole H in the process of moving the through-hole fire protection device T.

  And as shown in FIG.3 (c), mounting | wearing with the through-hole fire-protection tool T is completed by moving the collar part 2 of the base material 1 to the predetermined | prescribed insertion depth contact | abutted on the surface of the floor slab S. The through-hole fire prevention structure is completed.

  At this time, each of the elastic convex portions 3 located inside the through-hole H has an inner peripheral surface of the through-hole H in a curved posture in which the tip side faces the insertion port side (that is, the indoor side) of the through-hole H as described above. It is in a state of elastic contact with the entire circumference of h1.

  Therefore, the base material 1 is maintained in the radial center position in the through hole H by the elastic restoring force of each elastic convex portion 3 located in the through hole H, and the base material 1 moves along the axial direction. Therefore, it is possible to effectively prevent the base material 1 from moving to the front side of the floor slab S.

  Furthermore, the cylindrical surface 1a of the base material 1 and the inner peripheral surface h1 of the through hole H are elastically contacted with the entire circumference of the inner peripheral surface h1 of the through hole H of each elastic convex portion 3 located in the through hole H. It is possible to reliably prevent a flame, heat, or smoke during a fire from passing through the floor slab S through the gap.

  In addition, each elastic convex portion 3 located in the back space of the floor slab S is in a state where the tip side is elastically restored to the original posture positioned radially outward from the inner peripheral surface h1 of the through hole H.

  For this reason, the through-hole fire protection device T is pulled out and moved to the front side of the floor slab S, so that the elastic convex portions 3 arranged on the back side of the floor slab S in the elastically restored state and the back-side peripheral edge portion of the through-hole H. It can be suppressed by this (in other words, the hooking of the through hole H to the back side peripheral edge portion).

  Further, the long body P accommodated in the base material 1 is formed by shielding the gap between the base material 1 and the long body P by a large number of shielding pieces 4 a formed inside the base material 1. It is possible to prevent the flame, heat, and smoke from passing through the floor slab S through the through-hole.

[Second Embodiment]
FIG. 4 shows another example of the through-hole fire protection device T used by being inserted into and installed in the through-hole H formed in the floor slab S. The through-hole fire protection device T is an inner peripheral surface h1 of the through-hole H. It is comprised from the base material 1 comprised so that formation of the cylindrical surface 1a which coat | covers was possible.

  Specifically, the base material 1 has a substantially rectangular plate shape in front view that can form the cylindrical surface 1a (see FIG. 4C) by performing a bending deformation operation in a state in which both left and right ends are connected. It is comprised, and it is comprised so that the high productivity by extrusion molding may be obtained.

  On the one end side in the longitudinal direction of the outer surface 1c (the upper end side in FIGS. 4 (a) and 4 (b)) which is the cylindrical surface forming portion of the base material 1, the annular flange 2 is formed in a cylindrical deformed state. The ridge forming convex piece 2a to be configured is extended to the full width along the horizontal direction.

  In addition, at a plurality of locations in the longitudinal intermediate portion of the outer surface 1c of the substrate 1, elastic convex portion forming pieces 3a that form the annular elastic convex portions 3 in a cylindrical deformed state are filled in the horizontal width along the horizontal direction. It is extended.

  Furthermore, it protrudes inward so that it may squeeze in the axial direction center side in the cylindrical deformation state at the longitudinal direction other end side (the lower end side in FIG. 4 (a), (b)) of the base material 1, and is long. A plurality of shielding piece portions 4b forming a shielding portion 4 that shields a gap between the scale body P and the inner surface of the substrate 1 are continuously provided along the horizontal direction.

  Each of the shielding piece portions 4b is provided in a state of projecting obliquely backward with the base end portion as a bending point, and is shielded by adjacent sides of the shielding piece portions 4b adjacent to each other in a cylindrical deformation state. It is cut out and formed into a substantially trapezoidal shape in front view in which the inclination angles of the left and right sides are set so as to close the gap between the pieces 4b (see FIG. 6).

  Next, a through-hole fire prevention method using the through-hole fire prevention tool T configured as described above will be described.

  As shown in FIGS. 4C and 5A, the base material 1 is bent and deformed into a cylindrical shape in a state in which the long body P inserted through the through hole H surrounds a portion located on the front side of the floor slab S. The long body P is accommodated in the base material 1 in a state where the base material 1 is held in a cylindrical shape against the elastic restoring force by the operation force.

  By this bending deformation operation, the ring-shaped collar part 2 made of the collar part-forming convex piece 2a, the elastic convex part 3 made of the elastic convex part-forming piece 3a, and the shielding part 4 made of a plurality of shielding piece parts 4b are formed. The Further, the long body P accommodated in the base material 1 by the shielding part 4 held in an inward projecting posture while being constricted to the center side in the axial direction of the base material 1 by the operating force is the axial core side of the base material 1 Is held in position.

  In addition, by inserting the through-hole fire protection device T partially into the through-hole H from a state in which the base 1 is held in a cylindrical shape by the operating force, the inner peripheral surface h1 of the through-hole H and the base 1 In other words, the base material 1 resists the elastic restoring force of the base material 1 by restraining and holding from the outer peripheral side of a part (lower end portion) of the base material 1 by the inner peripheral surface h1 of the through hole H. It is good to hold | maintain cylindrical.

  In addition, for example, the base 1 is held in a cylindrical shape against the elastic restoring force of the base 1 by connecting and holding the left and right ends of the base 1 with connection holding means such as an adhesive tape or a band. It may be.

  And as shown in FIG.5 (b) and FIG. 6, the mounting | wearing of the through-hole fire prevention tool T is carried out by moving the collar part 2 of the base material 1 to the predetermined insertion depth contact | abutted on the surface of the floor slab S Is completed, and the through-hole fire prevention structure is completed.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) The through hole belonging to the partition side is not limited to the through hole H formed through the partition body shown in each of the above-described embodiments. For example, the through hole is a sleeve made of metal or the like that is embedded in the partition body. It may be a formed through hole (that is, the inside of the sleeve) or the like.

  (2) In each of the above-described embodiments, a plurality of locations in the axial direction of the through-hole are provided as the elastic convex portions dispersed in a plurality of locations along the axial direction of the through-hole in a longitudinal sectional view along the axial direction of the through-hole. A plurality of annular elastic convex portions 3 dispersedly arranged in the example are shown as an example, but are helical elastic convex portions or the like that are spirally extended so as to surround the outer peripheral surface of the substrate 1 a plurality of times. Also good.

  (3) In each of the above-described embodiments, the case where the elastic convex portion 3 elastically contacting the inner peripheral surface h1 of the through-hole H in a mounted state with respect to the through-hole H is illustrated as an example. It may be.

  (4) In each of the above-described embodiments, the case where the elastic convex portion 3 is configured to have the same thickness from the proximal end to the distal end has been described as an example, but, for example, the elastic convex portion 3 is configured to be thinner toward the distal end side. Also good.

  (5) In the second embodiment described above, the flange-forming convex pieces 2a and the elastic convex-forming convex pieces 3 formed on the outer surface 1c of the plate-like substrate 1 are the same in the extending direction (lateral width direction). Although the case where it was comprised by thickness was shown as an example, in order to reduce the deformation | transformation operation resistance to a cylindrical attitude | position, the thickness of one place or several places of the extending direction may be comprised thinly, for example.

  (6) In each of the above-described embodiments, the shielding pieces 4a and 4b for closing the gap between the inner peripheral surface 1b of the base material 1 and the outer peripheral surface of the elongated body P are attached to the through hole H. As an example, the case where the base material 1 is formed at the same location in the axial direction of the base 1 so as to be gathered at one location in the axial direction of the through hole is shown as an example. You may be formed in the state to do.

  (7) In each above-mentioned embodiment, although the case where the whole through-hole fire-protection tool T was comprised from the elastic material was shown as an example, if at least the elastic convex part 3 is comprised from the elastic material, for example Good.

  (8) In each of the above-described embodiments, the case where the cylindrical surface 1a of the substrate 1 is a cylindrical surface has been described as an example, but a square cylindrical surface or the like may be used.

  The present invention can be suitably applied not only to buildings but also to fire prevention measures for various structures.

DESCRIPTION OF SYMBOLS 1 Base material 1a Tubular surface 1b Inner peripheral surface of base material 3 Elastic convex part 4 Shielding part H Through hole h1 Inner peripheral surface of through hole P Long body S Partition body (floor slab)

Claims (5)

A through-hole fire prevention tool for inserting a long body attached to a through-hole belonging to the partition body side,
The inner periphery of the through hole in the mounting state with respect to the through hole in the cylindrical surface forming part of the base material on which the cylindrical surface capable of covering the inner peripheral surface of the through hole is formed or configured to be able to form the cylindrical surface A through-hole fire-protecting device in which an elastic convex portion elastically contacting the surface is formed to protrude.   The inner circumference of the through-hole so that the elastic convex portion blocks the gap formed between the inner circumferential surface of the through-hole and the cylindrical surface of the base material in the mounting state with respect to the through-hole in the axial direction of the through-hole. The through-hole fire protection device according to claim 1, wherein the through-hole fire prevention device is provided in a state of elastic contact with at least one round of the surface.   The through-hole fire-protection measure according to claim 1 or 2, wherein the elastic convex portion is provided in a state of being dispersed at a plurality of locations in the through-hole axial direction in a longitudinal sectional view along the through-hole axial direction in a mounted state with respect to the through-hole. Ingredients.   The said elastic convex part is comprised in the thin-plate shape or protrusion shape which can be elastically contacted to the internal peripheral surface of a through-hole in the state which carries out elastic bending deformation or elastic fall deformation, The method of any one of Claims 1-3 Through-hole fire protection device.   It is possible to shield at least a part of the gap between the inner peripheral surface of the base material and the outer peripheral surface of the long body with the long body inserted through the base material while being attached to the through hole. The through-hole fire prevention device according to any one of claims 1 to 4, wherein a simple shielding portion is provided on the base material.

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