JP6983215B2 - Through hole forming member to the wall - Google Patents

Description

The present invention relates to a member for forming a through hole to a wall.

Conventionally, after passing a long pipe through a through hole that penetrates a section provided in a partition of a structure, a fireproof member for filling the gap between the through hole and the pipe is attached to the through hole. ..

The refractory member includes a thermal expansion member and a foam that are housed in a cylindrical main body that is inserted and fixed in a through hole. When the refractory member having the above configuration is attached to the through hole, the foam provided in the main body portion abuts on the outer surface of the pipe and is deformed to fill the gap between the pipe and the main body portion. This prevents smoke from moving to the other side through the through hole when a fire breaks out on one side of the compartment. In the foam, a through hole for passing a pipe is formed in the center of the cylinder in the pipe insertion direction, and the foam is radially formed from the through hole in the center of the cylinder so as to be able to correspond to different outer diameters of the pipe. A large number of notches are formed in (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-11345

In Patent Document 1, since a large number of notches are formed radially from the through hole in the center of the cylindrical body in the foam, the degree of deformation of the foam after mounting depends on the outer diameter of the pipe to be inserted. It is difficult to completely close all the notches because of the difference. Therefore, in the foam in which a large number of notches are formed, there is an inconvenience that smoke when a fire breaks out on one side of the section through some of the notches moves to the other side through the through hole, and early improvement can be achieved. It is requested.

In view of the above situation, the present invention seeks to solve a wall that can reliably prevent smoke from moving to the other side through a through hole when a fire breaks out on one side of the compartment. It provides a through hole forming member of the above.

The member for forming a through hole to a wall of the present invention is fixed in a state of being inserted into a through hole penetrating a section provided in a partition portion of a structure in order to solve the above-mentioned problem, and has a tubular shape through which a pipe can be inserted. The frame is provided with a frame member configured in the above, and a blocking member inserted into one end of the frame member in the pipe insertion direction to fill a gap between the frame member and the pipe inserted into the frame member. The member is provided with a reduced diameter portion at one end in the pipe insertion direction, which has a smaller diameter toward the inner side in the insertion direction of the blocking member, and the blocking member is contracted at the reduced diameter portion by inserting the blocking member into the frame member. It is characterized by having a deformed portion configured to be calibrated.

According to the present invention, by inserting the blocking member into one end of the frame member in a state where the pipe is inserted through the frame member, the deformed portion provided in the blocking member is reduced in diameter at the reduced diameter portion. This reduced diameter deformed portion can satisfactorily fill the gap between the frame member and the pipe. Therefore, it is possible to reliably prevent the smoke when a fire breaks out on one side of the compartment from moving to the other side through the through hole at the deformed portion.

Further, in the through hole forming member to the wall of the present invention, the blocking member is configured to be inserted into the frame member while rotating, and the deformed portion is inserted into the reduced diameter portion by inserting while rotating. On the other hand, the diameter may be reduced while sliding in the rotation direction.

According to the present invention, by inserting the blocking member into the frame member while rotating it, the deformed portion slides in the rotational direction to reduce the diameter, so that the deformed portion is easily deformed to fit the shape of the reduced diameter portion. , The gap between the frame member and the pipe can be well filled.

Further, the member for forming a through hole to the wall of the present invention is provided with a female screw portion on one of the blocking member and the frame member, and is screwed on the female screw portion on the other of the blocking member and the frame member. The blocking member is provided with a matching male screw portion, and the blocking member is configured to be inserted into the frame member by rotating with respect to the frame member so that the female screw portion and the male screw portion are screwed together. May be configured to be reduced in diameter while sliding in the rotational direction with respect to the reduced diameter portion by screwing the blocking member with respect to the frame member.

As described above, by rotating the blocking member and screwing it into the frame member, the blocking member can be smoothly inserted into the frame member. Therefore, since the deformed portion smoothly slides in the rotation direction and shrinks in diameter, the deformed portion is easily deformed so as to fit the shape of the reduced diameter portion as a whole, and the gap between the frame member and the pipe is created. Can be filled well.

Further, the diameter-reduced portion of the member for forming a through hole to the wall of the present invention may have a tapered surface whose diameter becomes smaller toward the inner side in the insertion direction of the blocking member.

As described above, if the reduced diameter portion has a tapered surface whose diameter becomes smaller toward the inner side in the insertion direction of the blocking member, the blocking member can be smoothly moved to the frame member by moving the blocking member along the tapered surface. Can be inserted into.

According to the present invention, by inserting a blocking member into each of both ends of the frame member, the deformed portion reduced in diameter at the reduced diameter portion can satisfactorily fill the gap between the frame member and the pipe. Therefore, it is possible to provide a through hole forming member to the wall which can surely prevent smoke from moving to the other side through the through hole when a fire breaks out on one side of the section.

It is a front view of the frame member which is a constituent member of the through hole forming member to a wall of this invention. It is a side view of the frame member. It is a vertical sectional side view of the frame member. It is a top view of the base member which constitutes one of the frame members. It is a perspective view of the base member. It is a top view of the cover member which constitutes the other of the frame member. It is a perspective view of the cover member. It is a perspective view of the blocking member constituting the frame member. It is a vertical sectional side view which shows the state which the blocking member is screwed into the frame member in which a pipe is arranged. It is a cross-sectional plan view which shows the state which the blocking member is screwed into the frame member in which a pipe is arranged. It is a perspective view which shows the frame member of another embodiment. It is a vertical sectional side view of the frame member of FIG. It is a perspective view of the state which attached the blocking member to the frame member of FIG. It is a vertical sectional side view of FIG. It is a side view which made a partial cross section which attached the thing of FIG. 13 to a through hole. It is a perspective view of the state which attached the blocking member to the frame member of still another embodiment.

Hereinafter, embodiments of the member for forming a through hole to the wall of the present invention will be described with reference to the drawings.

As shown in FIG. 9, the through hole forming member 1 to the wall is inserted into each of the frame member 3 having a tubular shape through which the pipe 2 can be inserted and both ends of the frame member 3 in the pipe insertion direction. It is provided with a pair of blocking members 4 and 4 for filling a gap between the 3 and the pipe 2 inserted through the frame member 3. In the front view of FIG. 1, the left side is the left side, the right side is the right side, the upper side is the upper side, the lower side is the lower side, the front side in the paper surface direction is the front side, and the back side in the paper surface direction is the rear side. Will be described in.

As shown in FIG. 1, the frame member 3 has a rectangular outer shape (a square in the front view of FIG. 1, but may be rectangular) in the pipe insertion direction view (front-back direction view) and a circular inside. An upper member 31 located on the upper side and a lower member 33 that can be connected to and disconnected from the upper member 31 are provided. In this embodiment, the upper member 31 and the lower member 33 are formed of synthetic resin, but may be made of metal or the like, and the material is not limited.

As shown in FIGS. 1 to 3 and 6 to 7, the upper member 31 includes left and right side wall portions 312 and 313 and left and right side wall portions extending downward from both ends of the top wall portion 311 and the top wall portion 311 in the left-right direction. It is provided with front and rear side wall portions 314 and 315 that connect the front and rear ends of 312 and 313, respectively.

The top wall portion 311 has a flat upper surface (top surface) 311A (see FIGS. 1 to 3), and is located on the inner surface side of the central portion in the front-rear direction from the top wall portion 311 to the left and right side wall portions 312, 313 in the front-rear direction. A pair of front and rear arch-shaped plate portions 316 and 317 are formed so as to project downward at intervals (see FIG. 7). An upper refractory material 5A having a substantially rectangular shape in a plan view is provided in a space surrounded by a pair of front and rear plate portions 316, 317, a top wall portion 311 and left and right side wall portions 312, 313. It is provided with a plurality of (three) ribs 318 that support the pipe 2 from one (front) plate portion 316 located on the front side wall portion 314 side toward the front side wall portion 314. Similarly, on the rear side, a plurality of (three) ribs 319 that support the pipe 2 from the other (rear side) plate portion 317 located on the rear side wall portion 315 side toward the rear side wall portion 315. It is equipped with. As shown in FIGS. 6 and 7, these plurality (six in total) ribs 318 and 319 are formed along the front-rear direction, and are outside in the left-right direction so as to reliably support the upper side of the circular pipe 2. The lower end of the rib is located at the bottom. Since the plurality of ribs 318 and 319 are formed along the front-rear direction, it is possible to reduce the contact resistance with the pipe 2 moving in the through hole forming member 1 to the wall.

Further, through holes are formed in the lower wall stacked in the vertical direction at each of the left-right end portion of the front end portion of the top wall portion 311 and the left-right end portion of the rear end portion of the top wall portion 311. A thin film portion 320 (see FIG. 6) for forming a through hole for connecting the member 1 and the member 1 for forming a through hole to the upper wall by a screw (fastening member, not shown) is formed. Further, as will be described later, through holes 340 and 340 are also formed in the lower member 33 at positions corresponding to the thin film portions 320 and 320 of the upper member 31. Therefore, when the through hole forming members 1 and 1 to the wall are stacked in the vertical direction, the thin film portions 320 and 320 are opened with screws to form the lower member 33 of the through hole forming member 1 to the upper wall. By penetrating the screw through the through holes 340, 340 and the through holes opened in the upper member 31 of the through hole forming member 1 to the lower wall, the through hole forming members 1, 1 to the upper and lower walls Can be fixed. Since the lower member 33 is mainly attached to the floor surface, even if the through holes 340 and 340 are formed, dust and the like can enter the inside of the through hole forming member 1 to the wall through the through holes 340 and 340. It doesn't matter because there are few. On the other hand, when a through hole is formed in the top wall portion 311 of the upper member 31, it is formed in the top wall portion 311 of the upper member 31 when the through hole forming members 1 to the plurality of walls are not stacked in the vertical direction. Since dust and the like enter the inside of the through hole forming member 1 from the through hole, they are covered with the thin film portions 320 and 320.

As shown in FIGS. 6 and 7, each of the front and rear side wall portions 314 and 315 of the upper member 31 has a semicircular upper insertion portion 321 forming an insertion hole through which the pipe 2 can be inserted, and an upper insertion portion 321. It is provided with an upper diameter-reduced portion 322 having a tapered surface 322A whose diameter increases toward the outside from the outer end of the above. Further, each of the front and rear side wall portions 314 and 315 of the upper member 31 is provided with an upper extending portion 323 extending outward in the front-rear direction and formed in an arc shape slightly smaller than a semicircle, and an inner surface of the upper extending portion 323. A female screw portion 323A is formed on the surface. The tapered surface 322A is composed of a curved surface that is convex inward, but may be composed of a flat flat surface.

As shown in FIGS. 1 to 5, the lower member 33 has left and right side wall portions 332,333 and left and right side wall portions 332,333 extending upward from both ends in the left-right direction of the bottom wall portion 331 and the bottom wall portion 331. It is provided with front and rear side wall portions 334 and 335 for connecting the ends, respectively. The lower member 33 is configured to have substantially the same dimensions as the upper member 31, but the vertical dimensions of the left and right side wall portions 332 and 333 are longer than the vertical dimensions of the left and right side wall portions 312 and 313 of the upper member 31. However, they may have the same vertical dimensions.

The bottom wall portion 331 has a flat bottom surface 331A (see FIGS. 1 to 3), and is spaced in the front-rear direction from the bottom wall portion 331 to the left and right side wall portions 332 and 333 on the inner surface side of the central portion in the front-rear direction. A pair of front and rear arch-shaped plate portions 336 and 337 are formed so as to project upward (see FIG. 5). A lower refractory material 5B having a substantially rectangular shape in a plan view is provided in a space surrounded by a pair of plate portions 336 and 337, a bottom wall portion 331, and left and right side wall portions 332 and 333. By connecting the upper member 31 to the lower member 33, the upper refractory material 5A and the lower refractory material 5B can cover the periphery of the pipe 2. Further, it is provided with a plurality of (three) ribs 338 that support the pipe 2 from the one (front) plate portion 336 located on the front side wall portion 334 side toward the front side wall portion 334 (see FIG. 4). .. Similarly, on the rear side, a plurality of (three) ribs 339 that support the pipe 2 from the other (rear side) plate portion 337 located on the rear side wall portion 335 side toward the rear side wall portion 335. (See FIG. 4). As shown in FIGS. 4 and 5, these plurality (six in total) ribs 338 and 339 are formed along the front-rear direction, and are laterally oriented so as to reliably support the lower side of the circular pipe 2. The ribs located on the outside have a higher height (upper end). Since the plurality of ribs 338 and 339 are formed along the front-rear direction, it is possible to reduce the contact resistance with the pipe 2 moving in the through hole forming member 1 to the wall. In FIG. 4, the lower side of the paper surface is the front side, and the upper side of the paper surface is the rear side.

Further, through holes are formed in the lower wall stacked in the vertical direction at each of the left-right end portion of the front end portion of the bottom wall portion 331 and the left-right end portion of the rear end portion of the bottom wall portion 331. A through hole 340 for connecting the member 1 and the member 1 for forming a through hole to the upper wall by a screw (fastening member) is formed. These through holes 340 and 340 can also be used as through holes for fixing the lower member 33 to the floor (or ceiling). Further, thin film portions 341 and 341 for forming through holes for fixing the lower member 33 to the floor (or ceiling) are formed in the central portion in the left-right direction of the lower first extending portion 344 and 344 described later. There is. Therefore, when the through hole forming members 1 and 1 to the wall are stacked in the vertical direction, the thin film portions 320 and 320 of the top wall portion 311 are opened with screws passing through the through holes 340 and 340 of the bottom wall portion 331. The through hole forming members 1 and 1 can be fixed to the upper and lower walls. Further, the lower member 33 can be screwed to the floor (or ceiling) by using a part or all of the through holes 340 and 340 of the thin film portions 341 and 341 for forming the through holes and the bottom wall portions 331. ..

As shown in FIG. 4, each of the front and rear side wall portions 334 and 335 of the lower member 33 has a semicircular lower insertion portion 342 that supports the pipe 2 from below and forms an insertion hole, and a lower insertion portion. A lower diameter-reduced portion 343 having a tapered surface 343A whose diameter increases from the outer end of the portion 342 toward the outside is provided. Further, the front and rear side wall portions 334 and 335 of the lower member 33 extend from the side wall portions 334 and 335 toward the outside in the front-rear direction and form a lower first extending portion 344 formed in an arc shape smaller than a semicircle. A pair of arcuate lower second extension portions 345 and 345 extending outward in the axial direction from two locations other than the lower end portion in the circumferential direction of the lower first extension portion 344 are provided. There is. Female screw portions 345A are formed on each of the inner surfaces of the lower second extending portions 345 and 345. The upper diameter reduction portion 322 of the upper member 31 and the lower diameter reduction portion 343 of the lower member 33 constitute a diameter reduction portion S for reducing the diameter of the deformed portion 43 of the blocking member 4, which will be described later. The tapered surface 343A is composed of a curved surface that is convex inward, but may be composed of a flat flat surface.

Examples of the pipe 2 include a hot water supply pipe, a water supply pipe, a drain pipe, an electric wire pipe, and the like. Here, a screw is shown as a fastening member, but a pin inserted into a hole provided in the floor or ceiling and a band for tightening and fixing the through hole forming member 1 to the wall to a fixing portion attached to the floor or ceiling. There may be.

As the upper refractory material 5A and the lower refractory material 5B, a heat-expandable refractory material is used. This heat-expandable refractory material is a member having heat-expandability (property that the volume increases by heating) and fire resistance (property that easily withstands heat, property that the melting temperature is high and it is hard to burn). As the heat-expandable refractory material, a known material can be used without particular limitation, and for example, a putty-like member (heat-expandable putty-like refractory material) can be used. The heat-expandable refractory material expands in the thickness direction of, for example, when heated to a predetermined temperature (for example, 200 ° C.) or higher, between the outer surface of the pipe 2 and the inner surface of the through-hole forming member 1 to the wall. By filling the gap, the flame generated on one side of the through hole 6A is prevented from moving to the other side of the through hole 6A.

Explaining the configuration for fixing the upper member 31 and the lower member 33, as shown in FIGS. 6 and 7, the lower ends of the left and right side wall portions 312 and 313 of the upper member 31 are located outward in the left-right direction. A pair of front-rear protrusions 312T and 312T that protrude and are long in the front-rear direction are formed at the front-rear end portions. In FIG. 6, the upper side of the paper surface is the front side, and the lower side of the paper surface is the rear side. Further, as shown in FIGS. 4 and 5, in the central portion in the front-rear direction of the upper ends of the left and right side wall portions 332 and 333 of the lower member 33, the left and right protrusions 312T on the front side or the rear side of the upper member 31 or Notches 332K and 333K for the 312T to enter downward are formed, and support portions 332U and 333U for abutting and supporting the left and right protrusions 312T and 312T on the front or rear side that have entered the notches 332K and 333K from below. Is formed in the entire front-rear direction of the lower member 33. Further, when the left and right protrusions 312T and 312T on the front side or the rear side enter the notches 332K and 333K from above and are supported by the support portions 332U and 333U, when the upper member 31 is moved in one direction in the front-rear direction. The contact portions 332T and 333T protruding inward to guide the upper ends of the protrusions 312T and 312T in contact with each other are formed so as to extend in the front-rear direction on both front and rear sides of the notches 332K and 333K. The contact portions 332T and 333T have a rectangular cross-sectional shape and are composed of protrusions that are long in the front-rear direction. The protrusions 312T and 312T move in the front-rear direction while being sandwiched between the positioned support portions 332U and 333U. Further, the front end portion of the inner surface of the contact portions 332T and 333T located on the front side is locked to the recess 31A (see FIG. 2) provided in the upper member 31 when the upper member 31 is moved in one direction in the front-rear direction. A convex portion 33A (see FIGS. 4 and 5) for fixing the upper member 31 to the lower member 33 is provided. Further, similarly to the front contact portions 332T and 333T, the upper end portion of the inner side surface of the contact portions 332T and 333T located on the rear side is also on the upper side when the upper member 31 is moved to one side in the front-rear direction. A convex portion 33A (see FIGS. 4 and 5) is provided which is locked to the concave portion 31A (see FIG. 2) provided in the member 31 to fix the upper member 31 to the lower member 33. Therefore, when the upper member 31 is moved in one direction in the front-rear direction, the upper member 31 can be fixed to the lower member 33 by engaging the four convex portions 33A in the four recesses 31A. .. By releasing the locking between the four concave portions 31A and the four convex portions 33A, the fixing between the lower member 33 and the upper member 31 can be released.

As shown in FIG. 9, by inserting the pair of blocking members 4 and 4 into both ends of the frame member 3 in the front-rear direction, smoke when a fire breaks out on one side of the through hole 6A is emitted from the through hole 6A. The movement to the other side can be prevented by the through hole forming member 1 to the wall.

As shown in FIG. 8, each blocking member 4 is located on the front side in the insertion direction H into the frame member 3, and has a plate-shaped and ring-shaped grip portion 41 for rotating the blocking member 4, and a grip portion 41. A cylindrical portion 42 having an outer diameter smaller than that of the grip portion 41 extending from the end face on the back side in the insertion direction to the back side in the insertion direction, and a donut-shaped deformed portion 43 fixed to the end face on the back side in the insertion direction of the cylindrical portion 42. , Is equipped.

The grip portion 41 and the cylindrical portion 42 are integrally formed of synthetic resin, and are composed of two semi-arc members 44, 45 in the circumferential direction. One end of the two semi-arc members 44, 45 is connected to each other by a pin (not shown) in the circumferential direction, and is configured to be switchable between an open state and a closed state. Therefore, in the closed state, the pair of claw portions 45A, 45A provided on the other half-arc member 45 enters and locks into the ring portion 44A whose other end in the circumferential direction is formed on one half-arc member 44. Keeps it closed.

On the outer peripheral surface of the grip portion 41, a large number of arc portions 41A are formed along the circumferential direction to facilitate the catching of fingers. Further, on the outer surface of the cylindrical portion 42, a male screw portion 42N to be screwed into the female screw portions 323A and 345A (see FIGS. 5 and 6) of the frame member 3 is formed.

The deformed portion 43 is fixed to the end surface of the cylindrical portion 42 on the back side in the insertion direction with double-sided tape, an adhesive, or the like, and is made of a synthetic rubber foam sheet. This synthetic rubber foam sheet is a foam sealing material containing EPDM rubber as a main component, but if the diameter of the blocking member 4 can be reduced by the reduced diameter portion S of the frame member 3 when the blocking member 4 is inserted into the frame member 3. , May be composed of other materials.

FIG. 10A shows a state immediately before inserting the blocking member 4 into the frame member 3, and by rotating the blocking member 4 from this state, the male screw portion 42N of the blocking member 4 is changed to the female screw portion of the frame member 3. By screwing into 323A and 345A, the blocking member 4 can be smoothly inserted into the frame member 3. At the time of insertion, the deformed portion 43 moves along the tapered surfaces 322A and 343A, so that the inner side of the deformed portion 43 in the insertion direction moves inward and the diameter is reduced. Therefore, since the deformed portion 43 smoothly slides in the rotational direction and shrinks in diameter, the deformed portion 43 is easily deformed so as to fit the shape of the reduced diameter portion S as a whole, and is shown in FIG. 10 (b). As described above, the gap D between the frame member 3 and the pipe 2 can be satisfactorily filled. In FIG. 10B, the deformed portion 43 is reduced in diameter by the reduced diameter portion S while keeping the shape of the inner surface 43A of the deformed portion 43 that abuts on the outer surface 2A of the pipe 2 as a flat surface. Further, the deformed portion 43 has a reduced diameter portion while maintaining the shape of the tip surface 43B (the surface on the back side in the insertion direction of the blocking member 4) of the deformed portion 43 in a direction orthogonal to the pipe insertion direction (may be a direction substantially orthogonal to the pipe insertion direction). The diameter is reduced by S. Therefore, the inner surface 43A of the deformed portion 43 is in close contact with the outer surface 2A of the pipe 2 evenly. The male screw portion 42N of the blocking member 4 is screwed into the female screw portions 323A and 345A of the frame member 3 to tighten and fix the blocking member 4 to the frame member 3, but both are locked when the screwing is completed. It is also possible to provide a locking mechanism for both of them.

Next, a work step of arranging the pipe 2 by the through hole forming member 1 to the wall configured as described above will be described.

As shown in FIG. 2, the lower member 33 is arranged on the floor F and fixed to the through hole formed in the lower member 33 by using a screw as described above. At the time of this fixing, the position where the lower member 33 is fixed to the floor F, that is, the position where the walls 6 and 6 described later are provided is marked in advance by a marker, tape or the like, and is matched with the position of the walls 6 and 6. The lower member 33 will be fixed. When the fixing of the lower member 33 is completed, the pipe 2 is arranged (mounted) on the lower member 33, and then the upper member 31 is locked and fixed to the lower member 33 as described above. Subsequently, as shown in FIG. 9, the blocking members 4 and 4 are screwed to both ends of the frame member 3 in the front-rear direction as described above. From this state, a pair of walls 6 and 6 are installed. After the walls 6 and 6 are installed, a filler such as putty or mortar is formed in the gap generated between the through holes 6A and 6A (see FIG. 9) of the walls 6 and 6 and the through hole forming member 1 to the wall. It will be blocked by (not shown).

As described above, if the through hole forming member 1 to the wall is fixed at the position where the walls 6 and 6 of the floor F (or the ceiling may be formed) are formed before the walls 6 and 6 are formed, the members 1 are fixed. Since a cylindrical (here, cylindrical) through hole through which the pipe 2 can be inserted is formed in the through hole forming member 1 to the wall, the pipe 2 is formed even if the walls 6 and 6 are not formed. Can be inserted through the through hole forming member 1 to the fixed wall and arranged. Here, by fixing the lower member (one member) 33 to the floor F (or ceiling), a through hole for about half a circumference is formed.

In this embodiment, the pipes 2 are arranged in the through hole forming member 1 to the fixed wall and then the walls 6 and 6 are formed. However, the walls 6 and 6 are formed in the through hole forming member 1 to the fixed wall. After that, the pipe 2 may be inserted into the through hole forming member 1 to the wall fixed to the walls 6 and 6.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

In the above embodiment, the outer shape of the through hole forming member 1 to the wall is configured to have a rectangular cross section, but as shown in FIGS. 11 and 12, the outer shape of the through hole forming member 1 to the wall is configured to have a circular cross section. You may. Further, the through hole forming member 1 to the wall is composed of two members divided in the front-rear direction, and includes a front side member 51 located on the front side and a rear side member 52 located on the rear side. .. It should be noted that FIGS. 11 and 12 show a state in which the blocking members 4 and 4 described in the embodiment are not attached. The front member 51 includes a cylindrical main body portion 511 and an annular flange portion 512 provided on the outer surface of the front end portion of the main body portion 511. A female screw portion 511A into which the male screw portion 42N of the blocking member 4 described in the embodiment is screwed is formed on the inner surface of the front end portion of the main body portion 511, and the deformation of the blocking member 4 is formed on the inner surface on the rear side of the front end portion. A reduced diameter portion S in which the diameter of the portion 43 is reduced is provided. The reduced diameter portion S is provided with a tapered surface 511T whose diameter becomes smaller toward the rear side. The flange portion 512 is formed with a plurality of through holes 512A for screwing to the walls 6 and 6 shown in FIG. Like the front member 51, the rear member 52 includes a cylindrical main body portion 521 and an annular flange portion 522 at the front end portion of the main body portion 521. The flange portion 522 is abutted against the wall 6 shown in FIG. 15 and has a plurality of through holes 522A for screwing. A female screw portion 521A into which the male screw portion 42N of the blocking member 4 described in the embodiment is screwed is formed on the inner surface of the rear end portion of the main body portion 521, and the deformed portion of the blocking member 4 is formed on the front side of the rear end portion. The diameter-reduced portion S in which the diameter of 43 is reduced is provided. The reduced diameter portion S is provided with a tapered surface 521T whose diameter becomes smaller toward the rear side. Further, each of the inside of the rear end portion of the front side member 51 and the inside of the front side end portion of the rear side member 52 is provided with an annular refractory material 7. Further, the end portion where the front side member 51 and the rear side member 52 are butted together is provided with a fitting portion (not shown) that can be fitted to each other and the distance between the two can be adjusted.

13 and 14 show a state in which the blocking member 4 shown in FIG. 9 is screwed into the front member 51 and the rear member 52. When the pipe 2 is arranged in the through hole forming member 1 to the wall, as shown in FIG. 15, the main body portion 511 of the front member 51 is inserted into the through hole 6A in the wall 6 on one side (left side in the figure). , The flange portion 512 in contact with the wall 6 is screwed to the wall 6 as described above. Subsequently, the main body portion 521 of the rear member 52 is inserted into the through hole 6A in the other wall 6 (on the right side in the figure), and the flange portion 522 in contact with the wall 6 is screwed to the wall 6 as described above. When the main body portion 521 of the rear side member 52 is inserted into the wall 6, the butt end portion of the front side member 51 and the rear side member 52 is fitted. Subsequently, the work is completed by screwing and inserting the two blocking members 4 and 4 into the front member 51 and the rear member 52.

Further, in FIG. 16, the ring-shaped flange portions 512 and 522 shown in FIG. 13 are composed of a plurality of tongue pieces 513 and 523 (only two are shown in the figure, but actually three). .. These tongue pieces 513 and 523 are composed of plate-shaped portions extending radially outward at predetermined intervals in the circumferential direction of the outer surface of the main body portion 511 of the front side member 51 and the main body portion 521 of the rear side member 52. Other parts not described are the same as those in FIGS. 13 and 14, and the description thereof will be omitted.

Further, in the above-described embodiment, the reduced diameter portion S has a tapered surface having a smaller diameter toward the back side in the insertion direction of the blocking member 4, but the diameter becomes smaller toward the back side in the insertion direction of the blocking member 4. The reduced diameter portion may be formed from a corrugated surface having irregularities.

Further, in the above-described embodiment, the blocking member 4 can be inserted into the frame member 3 more smoothly by inserting the blocking member 4 into the frame member 3 while rotating the blocking member 4, but the blocking member 4 is slid into the frame member 3. It may be configured to be inserted.

Further, in the above-described embodiment, the blocking member 4 is rotated and screwed to the frame member 3, but the configuration is provided with a tapered guide surface that guides the rotation of the blocking member 4 instead of screwing. You may.

Further, in the above-described embodiment, the frame member 3 is provided with a reduced diameter portion S, and the blocking member 4 is provided with a deformed portion 43 whose diameter is reduced by the reduced diameter portion S. However, the blocking member 4 is provided with a reduced diameter portion and a frame. The member 3 may be provided with a deformed portion whose diameter is reduced by the reduced diameter portion.

Further, in the above-described embodiment, the blocking member 4 is inserted into both ends of the frame member 3 in the pipe insertion direction, but the blocking member 4 may be inserted only into one end of the frame member 3 in the pipe insertion direction.

Further, in the above-described embodiment, the upper member 31 is locked and fixed by moving the upper member 31 in the horizontal direction with respect to the lower member 33, but the upper member 31 is moved from the upper side to the lower side with respect to the lower member 33. As a result, it may be configured so that it can be locked and fixed, or the lower member and the upper member may be fixed by using a fastening member such as a screw.

1 ... Through hole forming member to the wall, 2 ... Piping, 2A ... Outer surface, 3 ... Frame member, 4 ... Blocking member, 5A ... Upper fireproof material, 5B ... Lower fireproof material, 6 ... Wall, 6A ... Through hole, 7 ... Fireproof material, 31 ... Upper member, 31A ... Concave, 33 ... Lower member, 33A ... Convex part, 41 ... Grip part, 41A ... Arc part, 42 ... Cylindrical part, 42N ... Male screw part, 43 ... Deformed part , 43A ... Inner surface, 43B ... Tip surface, 44,45 ... Semi-arc member, 44A ... Ring part, 45A ... Claw part, 51 ... Front side member, 52 ... Rear side member, 311 ... Top wall part, 311A ... Top surface (heaven) Surface) 312 ... Left side wall part, 313 ... Right side wall part, 312T ... Projection part, 314 ... Front side wall part, 315 ... Rear side wall part, 316,317 ... Plate part, 318, 319 ... Rib, 320 ... Thin film part, 321 ... Upper insertion part, 322 ... Upper reduced diameter part, 322A ... Tapered surface, 323 ... Upper extension part, 323A ... Female screw part, 323A, 345A ... Female screw part, 331 ... Bottom wall part, 331A ... Bottom surface, 332 ... left side wall part, 333 ... right side wall part, 332K ... notch, 332T ... contact part, 332U ... support part, 332U, 333U ... support part, 334 ... front side wall part, 335 ... rear side wall part, 336,337 ... Plate part, 338, 339 ... Rib, 340 ... Through hole, 341 ... Thin film part, 342 ... Lower insertion part, 343 ... Lower diameter reduction part, 343A ... Tapered surface, 344 ... Lower first extension part, 345 ... Lower second extension part, 345A ... Female screw part, 511 ... Main body part, 511A ... Female screw part, 511T ... Tapered surface, 512 ... Flange part, 512A ... Through hole, 513,523 ... Tongue piece, 521 ... Main body 521A ... Female screw part 521T ... Tapered surface 522 ... Flange part 522A ... Through hole, D ... Gap, F ... Floor, H ... Insertion direction, S ... Reduced diameter part

Claims (5)

It is fixed in a state of being inserted into a through hole penetrating a section provided in a partition portion of a structure, and is inserted into a frame member having a tubular shape through which a pipe can be inserted and one end of the frame member in the pipe insertion direction. A blocking member that fills the gap between the frame member and the pipe inserted through the frame member is provided.
The frame member has a reduced diameter portion whose diameter becomes smaller toward the back of the blocking member in the insertion direction at one end in the pipe insertion direction , and a flame caused by a fire generated on one side of the through hole by covering the circumference of the pipe. A heat-expandable refractory material for preventing movement to the other side of the through hole is provided.
The blocking member has an annular deformed portion continuous around the entire circumference around the pipe insertion direction, which is configured to be reduced in diameter at the diameter-reduced portion by inserting the blocking member into the frame member. A member for forming a through hole in a wall, which is characterized by being provided. The penetration into the wall according to claim 1, wherein the deformed portion moves inward in the insertion direction and is reduced in diameter by inserting the blocking member into the frame member. Hole forming member. The blocking member is configured to be inserted into the frame member while rotating.
The wall according to claim 1 or 2, wherein the deformed portion is configured to be reduced in diameter while sliding in a rotational direction with respect to the reduced diameter portion by being inserted while rotating. Through hole forming member. One of the blocking member and the frame member is provided with a female screw portion, and the other of the blocking member and the frame member is provided with a male screw portion to be screwed into the female screw portion.
The blocking member is configured to be inserted into the frame member by rotating it with respect to the frame member so that the female screw portion and the male screw portion are screwed together.
Claim 1 is characterized in that the deformed portion is configured to be reduced in diameter while sliding in the rotational direction with respect to the reduced diameter portion by being screwed by rotation of the blocking member with respect to the frame member. The member for forming a through hole to a wall according to any one of 3 to 3. The claim is characterized in that the blocking member is arranged on the front side in the insertion direction with respect to the deforming portion, and includes a grip portion formed in a plate shape and a ring shape for inserting the blocking member. The member for forming a through hole to a wall according to any one of 1 to 4.

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