JP2015056927A - Conduit material attachment structure at special part such as electric wire common groove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conduit material attachment structure at a special part such as an electric wire common groove, capable of attaching the conduit material to a gable wall with a short construction period and with a stable construction quality without requiring experience and skill for attachment of the conduit material to the gable wall, and of freely and easily increasing and decreasing a conduit.SOLUTION: A socket 12 having a cylindrical main body 12a, the main body 12a being a conduit port communicating between a pit outside and a pit inside of a gable wall W, is buried in the gable wall W. A hole cap 14 having a cylinder part 14a fitted and inserted into the main body 12a of the socket 12 is attached to and detached from the socket 12 from the pit outside to close and open a pit outside end surface of the socket 12. An adapter 16 consisting of a pair of half-split cylinder bodies 16a surrounding an outer periphery of a connection side end part of a conduit material P connected with the conduit port, and fixed to the outer periphery of the end part, is fixed to the conduit material P and inserted into the main body 12a of the socket 12 from the pit outside, and thereby, the conduit material P is connected with the conduit port.

Description

  The present invention relates to a pipe material mounting structure (a pipe port simple mounting device) for mounting a pipe material such as a stretchable mounting pipe to a wife wall of a special part such as an electric wire joint groove.

  Conventionally, when a pipe opening is provided in the end wall of a special part such as a common groove of an electric wire, and a pipe material such as a stretchable attachment pipe is attached, a thin wall (about 5 cm in thickness) is provided in advance to provide the pipe opening. After drilling the knock-out of the formed wife wall and inserting the pipe material into the hole (pipe opening) formed thereby, a method of filling mortar in the gap between the hole and the pipe material is adopted. (For example, refer to Patent Document 1).

JP-A-10-146818

However, the above prior art has the following problems.
In other words, knockout drilling work and gap filling work using mortar require skill, and the work is time consuming and time consuming.
In addition, there is a problem in that the quality of the pipe material attached to the pipe opening tends to vary due to the difference in the skill of the operator, and it is difficult to attach the pipe material uniformly to the end wall.
Furthermore, there has been a problem that it is not possible to simply and inexpensively increase or decrease the pipe material attached to the end wall.
Therefore, the main problem of the present invention is that the pipe material can be attached to the wife wall with a short construction period and stable construction quality without requiring skill in attaching the pipe material to the wife wall. It is an object of the present invention to provide a pipe material mounting structure in a special part such as a common wire groove, which can easily and freely perform pipes and reduced pipes.

In order to achieve the above object, for example, as shown in FIGS. 1 to 5, the present invention is configured as follows in a pipe material mounting structure 10 in a special portion such as an electric wire joint groove.
A socket 12 that has a cylindrical main body 12a and that serves as a conduit opening that communicates the outer side and the inner side of the end wall of the end wall W, which forms a special portion such as an electric wire joint groove, is formed on the end wall W. Buried. A hole cap 14 having a cylindrical portion 14a fitted into the main body 12a of the socket 12 is attached to and detached from the outer side of the socket 12, and opens and closes the outer side end surface of the socket 12. The adapter 16 comprising a pair of halved cylindrical bodies 16a that surrounds the outer periphery of the connection side of the pipe member P connected to the pipe port and is fixed to the outer periphery of the pipe member P is connected to the pipe member P. The pipe material P is connected to the above-mentioned pipe opening by being fixed to the main body 12a of the socket 12 and being inserted from the outer side of the flange.

The above invention has the following effects.
By embedding the socket 12 serving as a duct opening in the wife wall W in advance, it is not necessary to drill the knockout of the wife wall W to provide a duct opening.
Further, if a plurality of sockets 12 are embedded in the end wall W, the pipe member P attached to the end wall W can be easily increased or decreased by simply attaching or removing the hole cap 14 to or from the socket 12. And it can be done freely.
Then, the adapter 16 is attached to the outer periphery of the end of the connection side of the pipe material P, and the attachment of the pipe material P to the end wall W is completed simply by inserting the adapter 16 into the socket 12 from the outer side of the pipe. It is not necessary to fill the gap between the road opening and the pipe material P with mortar or the like.

In the present invention, the adapter 16 may further include a spacer 18 for watertightly sealing a gap between the inner peripheral surface of the half cylinder 16a of the adapter 16 and the end outer peripheral surface on the connection side of the pipe material P. preferable.
If such spacers 18 of various sizes corresponding to the diameter of the pipe material P are prepared, pipes of various diameters can be obtained without changing the sizes of the socket 12, the hole cap 14 and the adapter 16. The material P can be attached to the wife wall W.

  Further, in the present invention, it is preferable to provide a waterproof film 20 that closes the end face of the socket 12 on the inner side of the main body 12a and collapses when hit by the hammer 30 to open the end face.

  Further, in the present invention, one or a plurality of engaging projections 12b whose surface protrudes are provided on the inner peripheral surface of the main body 12a of the socket 12, and the cylindrical portion 14a of the hole cap 14 and the half of the adapter 16 are provided. On the outer peripheral surface of the split cylindrical body 16a, axial guide grooves 22a, 24a extending in the axial direction of the cylindrical portion 14a and the half cylindrical body 16a from the tip on the insertion side to the socket 12, and the axial direction thereof It consists of circumferential locking grooves 22b and 24b extending from the back of the guide grooves 22a and 24a in the circumferential direction of the cylindrical portion 14a and the half cylindrical body 16a, and cooperates with the engaging protrusion 12b. It is preferable to provide substantially L-shaped engaging grooves 22, 24 that lock the hole cap 14 and the adapter 16 fitted in the socket 12 so as not to be detached from the socket 12.

  Furthermore, it is preferable that the present invention adds a specific configuration described in the embodiments described later.

  According to the present invention, it is possible to attach the pipe material to the wife wall with a short construction period and with a stable construction quality, and to increase or reduce the pipe without requiring skill in attaching the pipe material to the wife wall. It is possible to provide a pipe material mounting structure in a special part such as an electric wire joint groove that can be easily and freely performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway cross-sectional view (side view) showing an outline of a pipe material mounting structure in a special portion such as an electric wire joint groove according to an embodiment of the present invention. It is a perspective view which shows the socket of one Example in this invention. It is a perspective view which shows the hole cap of one Example in this invention. It is a perspective view which shows the half cylinder shape which comprises the adapter of one Example in this invention, (a) represents a front, a bottom face, and a left side, (b) represents a back, a plane, and a right side. It is a perspective view which shows the spacer of one Example in this invention. It is explanatory drawing which shows an example of the opening procedure of a pipe opening among the construction methods of the pipe material attachment structure in special parts, such as a common wire groove | channel of this invention. It is explanatory drawing which shows an example of the attachment procedure of the pipe material to a pipe port among the construction methods of the pipe material attachment structure in special parts, such as an electric wire joint groove | channel of this invention.

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a partially cutaway cross-sectional view (side view) showing an example of a pipe material mounting structure 10 in a special portion such as a common wire groove of the present invention. As shown in this figure, the pipe member mounting structure 10 in a special part such as a common wire groove of the present invention is roughly composed of a socket 12, a hole cap 14 and an adapter 16, and a spacer 18 (see FIG. Are added to these.

The socket 12 is embedded in the end wall W that constitutes a special part such as a common wire groove, and forms a duct opening that connects the outer side and the inner side of the end wall W, as shown in FIG. And a cylindrical main body 12a.
A lock 1 is provided on the inner peripheral surface of the main body 12a so that the hole cap 14 and the adapter 16 fitted in the socket 12 are not detached from each other in cooperation with the engagement grooves 22 and 24 of the hole cap 14 and the adapter 16 described later. Or the some engagement protrusion 12b is protrudingly provided. In the example shown in FIG. 2, the two engaging protrusions 12 b are provided so as to protrude from each other at positions farthest from each other in the inner circumferential direction of the main body 12 a.

Further, a flange portion 12c having an enlarged outer diameter is formed at an end of the outer side (see FIG. 1) of the main body 12a of the socket 12. The flange portion 12c is provided with a circumferential groove 12c1 that opens at an end surface on the outer side of the flange, and a ring-shaped rubber packing 12d is mounted in the circumferential groove 12c1.
Furthermore, the outer peripheral surface of the main body 12a is provided with a plurality of rows of plate-like fins 12e protruding in the radial direction and extending over the entire axial direction of the main body 12a. A plurality of plate-shaped flange members 12f projecting in the radial direction and extending in the circumferential direction of the outer peripheral surface of the main body 12a are provided in a plurality of stages in the axial direction of the main body 12a. By providing such fins 12e and flange members 12f, when the socket 12 is embedded in the concrete constituting the end wall W, the fins 12e and flange members 12f function as anchors.

  And the water stop film 20 which closes the end surface and collapses with the hammer 30 (refer FIG. 6) and open | releases the said end surface is integrally provided in the edge part inside the collar of this main body 12a. . By providing such a water stop film 20, it is possible to further ensure water stop when the socket 12 is not used as a conduit port in cooperation with the hole cap 14 described later.

Note that the inner diameter of the main body 12a is formed so as to gradually decrease toward the inner side of the bag. By doing so, the pipe material P attached to the wife wall W through the socket 12 can be prevented from entering toward the inner side of the heel.
The material forming the socket 12 is not particularly limited, but it is preferable to use an engineering plastic such as a flame retardant ABS resin.

  The hole cap 14 is a member that is attached to and detached from the outer side of the socket 12 and opens and closes the outer end surface of the socket 12 as necessary. As shown in FIGS. 3 and 6, the main body 12a of the socket 12 is provided. It has the cylindrical part 14a inserted by insertion. One end of the cylindrical portion 14a in the axial direction (end portion on the outer side in FIG. 1) is provided with a flange portion 14b for enlarging the outer diameter and closing the end surface. Further, the outer end of the flange portion 14b is formed in a hexagonal bolt shape so as to be convenient when the hole cap 14 is attached to and detached from the socket 12.

Further, on the outer peripheral surface of the cylindrical portion 14a, an axial guide groove 22a extending in the axial direction of the cylindrical portion 14a from the distal end on the insertion side to the socket 12, and a cylindrical portion from the back of the axial guide groove 22a 14a, and a circumferential cap groove 22b extending in the circumferential direction. The hole cap 14 fitted in the socket 12 in cooperation with the engaging protrusion 12b is locked so as not to be detached from the socket 12. A substantially L-shaped engagement groove 22 is provided.
Note that reference numeral 23 in FIG. 3 indicates that when the engagement protrusion 12b of the socket 12 is engaged with the circumferential locking groove 22b, the engagement protrusion 12b gets over and the engagement between the two is more reliable. It is an engagement convex strip for.
Further, the outer periphery of the cylindrical portion 14a is formed in a lattice shape by stealing the meat of the portion excluding the engagement groove 22 for weight reduction. The outer diameter of the main body 12a is formed so as to gradually decrease toward the inner side of the bag so as to follow the inner shape of the main body 12a.
Further, the material for forming the hole cap 14 is not particularly limited, but it is preferable to use an engineering plastic such as an ABS resin.

  The adapter 16 is a member for connecting a pipe material P such as a stretchable attachment pipe from the outside of the ridge to the pipe port of the end wall W formed by the socket 12, as shown in FIGS. 4 and 7. The pipe member P has a pair of halved cylindrical bodies 16a that surrounds the outer periphery of the end portion on the connection side and is fixed to the outer periphery of the end portion. A half flange portion 16b is formed by expanding the outer diameter of one end portion (outer end portion) of the half cylindrical body 16a in the axial direction. The half flange portion 16b is configured in two stages in the axial direction of the half cylinder body 16a. The lower stage 16b1 connected to the half cylinder body 16a has a substantially U-shaped radial section in the half flange portion 16b. A circumferential groove 17 that opens toward the inner periphery is provided (see FIG. 4B), and the upper stage 16b2 on the distal end side (outer side) is used when the adapter 16 is attached to and detached from the socket 12. For convenience, the outer shape is formed in a half hexagon bolt (see FIG. 4A).

In addition, one or a plurality (two in the illustrated embodiment) of engaging claws 26 are provided so as to project from one side 16c of the mating surfaces 16c and 16d that connect the half cylinders 16a of the adapter 16. The other 16 d is provided with the same number of locking holes 28 for locking the engaging claws 26 at positions corresponding to the engaging claws 26.
Further, a rubber pad 16e is adhered to the inner peripheral surface of the half cylinder 16a in order to watertightly surround the outer periphery of the end portion on the connection side of the pipe material P.

Further, on the outer peripheral surface of the half cylindrical body 16a, an axial guide groove 24a extending in the axial direction of the half cylindrical body 16a from the tip on the insertion side to the socket 12, and the back of the axial guide groove 24a Adapter 16 fitted into the socket 12 in cooperation with the above-mentioned engaging projections 12b is formed from the socket 12 with a circumferential locking groove 24b extending from the portion in the circumferential direction of the half cylindrical body 16a. A substantially L-shaped engaging groove 24 is provided for locking so as not to be detached.
Note that reference numeral 25 in FIG. 4A indicates that when the engagement protrusion 12b of the socket 12 is engaged with the circumferential locking groove 24b, the engagement protrusion 12b gets over and the engagement between the two is more reliable. It is an engaging ridge for making it.

In addition, the outer periphery of the half cylinder 16a is formed in a lattice shape by stealing the meat of the portion excluding the engagement groove 24 and combining the pair of half cylinders 16a for weight reduction. The outer shape at this time is formed such that the outer diameter thereof gradually decreases toward the inner side of the ridge so as to follow the inner shape of the main body 12a of the socket 12.
Furthermore, the material forming the adapter 16 configured as described above is not particularly limited, but it is preferable to use an engineering plastic such as a flame-retardant ABS resin.

  The spacer 18 is a member for watertightly sealing a gap between the inner peripheral surface of the half cylindrical body 16a of the adapter 16 and the outer peripheral surface of the end portion on the connection side of the pipe material P, and is an ethylene propylene rubber (EPDM). ) And the like, and has an outer peripheral half cylinder portion 18a along the inner surface of the half cylinder body 16a. The inner peripheral shape of the half cylindrical portion 18a is a shape corresponding to the diameter of the pipe material P to which the adapter 16 is attached, and the water tightness between the pipe material P and the inner peripheral surface of the half cylindrical portion 18a. In order to further improve the above, a plurality of rows of convex ribs 18b made of the above-described elastic material extending in the circumferential direction of the inner circumferential surface are provided in the axial direction of the half cylindrical portion 18a.

In addition, the outer diameter of the half cylindrical portion 18a in the axial direction (end portion on the outer side) is enlarged and fitted in the circumferential groove 17 provided in the lower stage 16b1 of the half flange portion 16b of the adapter 16. A half-fitting flange portion 18c to be mated is formed. By providing such a half-fitting flange portion 18c, the watertightness between the spacer 18 and the adapter 16 can be further enhanced.
Further, one of the mating surfaces 18d and 18e connecting the half cylindrical portions 18a of the spacer 18 is formed with a step in which the inner peripheral side is the upper step portion 18d1 and the outer peripheral side is the lower step portion 18d2, and the other 18e. Are formed such that the outer peripheral side becomes the upper step portion 18e1 and the inner peripheral side becomes the lower step portion 18e2. And when the half cylinder parts 18a which have such a step part are match | combined, a phase stack will be formed in these mating surfaces.

Next, an example of a method of connecting the pipe material P to the end wall W of the special part using the pipe material attachment structure 10 in the special part such as the electric wire joint groove configured as described above will be described.
First, when precast the wife wall W, a plurality of sockets 12 are embedded in advance in the part of the wife wall W to which the pipe material P is supposed to be attached. From the stage of performing this embedding operation, it is preferable to attach a hole cap 14 to the outer side of the socket 12 and seal it as shown in FIG.
Subsequently, a manhole or the like that is a special portion such as a common wire groove is formed using the precast wife wall W, and then the pipe material P is attached to a necessary portion.

  When the pipe material P is attached to the predetermined position of the end wall W, first, as shown in FIG. 6, the hole cap 14 that closes the socket 12 at the pipe material P attachment position is rotated to After the engagement protrusion 12b of the socket 12 engaged with the direction locking groove 22b is aligned with the position of the axial guide groove 22a, the hole cap 14 is pulled out to open the outer end face of the socket 12. At the same time, the water-stopping film 20 provided on the inner end surface of the socket 12 is hit with a hammer 30 or the like to destroy the water-stopping film 20. As a result, a duct opening that connects the outer side and the inner side of the end wall W via the socket 12 is formed.

Subsequently, the adapter 16 is attached to the outer periphery of the end portion on the connection side of the pipe material P. At that time, a spacer 18 suitable for the diameter of the pipe material P is attached as necessary.
Then, as shown in FIG. 7, after the positions of the axial guide grooves 24 a of the adapter 16 fixed to the pipe material P and the engagement protrusions 12 b of the socket 12 are aligned, the adapter 16 is inserted into the socket 12. . Thereafter, when the adapter 16 is rotated in a predetermined direction (counterclockwise in the example shown in FIG. 7), the engagement protrusion 12b of the socket 12 gets over the engagement protrusion 25 of the adapter 16 and goes around. Engage with the direction locking groove 24b to be in a locked state, and the attachment of the pipe material P to the end wall W is completed.
Note that the socket 12 to which the pipe material P is not connected may be placed with the hole cap 14 attached, and if necessary, the pipe material P may be connected in the above procedure.

  Thus, according to the pipe material attachment structure 10 in the special part such as the electric wire joint groove of the present embodiment, the work of providing the pipe port by drilling the knockout of the end wall W, the pipe port and the pipe material P No need for skilled work such as filling the gap with mortar, etc., and the pipe material P can be attached to the end wall W with a short construction period and with stable construction quality. P can be increased or decreased easily and freely.

DESCRIPTION OF SYMBOLS 10 ... Pipeline material attachment structure 12 in special parts, such as a common wire groove | channel ... Socket 12a ... (Cylindrical) main body 12b ... Engagement protrusion 14 ... Hole cap 14a ... Cylindrical part 16 ... Adapter 16a ... Half cylinder 18 ... Spacer 20 ... Water blocking films 22 and 24 ... Engaging grooves 22a and 24a ... Axial guide grooves 22b and 24b ... Circumferential locking groove 30 ... Hammer W ... Wife wall P ... Pipe line material

Claims (4)

It has a cylindrical main body (12a), and the main body (12a) is a pipe port that communicates the outer side and the inner side of the end wall (W) that forms a special portion such as an electric wire joint groove. A socket (12) embedded in the wife wall (W);
The socket (12) has a cylindrical portion (14a) to be inserted into the main body (12a), and is attached to and detached from the outer side of the socket (12) to open and close the outer end surface of the socket (12). Hole cap (14),
The pipe member (P) connected to the pipe port has a pair of halved cylindrical bodies (16a) that surround the outer periphery of the connection side of the pipe member (P) and is fixed to the outer periphery of the end part. A pair of halved cylindrical bodies (16a) fixed to the material (P) is fitted and inserted into the main body (12a) of the socket (12) from the outer side of the socket, so that the pipe material (P) An adapter (16) for connecting the
A pipe material mounting structure in a special part such as an electric wire joint groove. In the pipe material mounting structure in the special part such as the electric wire joint groove of claim 1,
A spacer (18) for watertightly sealing a gap between the inner peripheral surface of the half cylinder (16a) of the adapter (16) and the outer peripheral surface of the end of the pipe member (P) on the connection side. A pipe material mounting structure in a special part such as an electric wire joint groove. In the pipe material mounting structure in a special part such as the electric wire joint groove of claim 1 or 2,
At the end of the socket (12) on the inner side of the main body (12a), there is provided a water blocking film (20) that closes the end face and collapses when hit by a hammer (30) to open the end face. , Characterized in that the pipe material mounting structure in a special part such as a common wire groove. In the pipe material mounting structure in the special part such as the electric wire joint groove according to any one of claims 1 to 3,
The inner peripheral surface of the main body (12a) of the socket (12) is provided with one or a plurality of engaging protrusions (12b) whose surface protrudes,
The cylindrical part (14a) of the hole cap (14) and the outer peripheral surface of the half-cylinder (16a) of the adapter (16) are connected to the cylindrical part (14a) from the distal end on the insertion side to the socket (12). ) And the axial guide grooves (22a) (24a) extending in the axial direction of the half cylindrical body (16a), and the cylindrical part (14a) from the back of the axial guide grooves (22a) (24a). ) And circumferential locking grooves (22b) (24b) extending in the circumferential direction of the half cylinder (16a), and the socket (12) in cooperation with the engagement protrusion (12b). There are provided substantially L-shaped engagement grooves (22) and (24) for locking the hole cap (14) and the adapter (16) inserted into the socket (12) so as not to be detached from the socket (12). A pipe material mounting structure in a special part such as an electric wire joint groove.