JP2009155979A - Concrete embedded object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To position and retain an opening of an embedded object in a state that it is securely brought into contact with a mold surface in a place where concrete surfaces are orthogonal to each other because of beams, slabs or the like of a building and the space between the mold and reinforcing iron bars or the like embedded in the concrete is small, thus securely preventing the intrusion of grout into the opening at the time of the pouring of the concrete, and to easily connect a protective tube of a wiring/plumbing material to a connection part. <P>SOLUTION: The concrete embedded object has a connection part 11, the opening 3, a first contact surface 22 and a second contact surface 32. A corrugate tube is connected to the connection part, and the opening is exposed from the concrete wall surface for pulling out a cable drawn into the corrugate tube. The first contact surface and the second contact surface 32 which are formed of two surfaces orthogonal to each other are continuously brought into contact with two surfaces of the concrete mold which are orthogonal to each other. The opening 3 is formed at the second contact surface. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to concrete embedments such as end protection covers for piping materials, boxes, etc., which are embedded in concrete such as side walls of buildings, partition walls, slabs, etc., using concrete molds, The present invention relates to a concrete-embedded object embedded in a place where the concrete surface is orthogonal and the space between the formwork and the reinforcing bar embedded in the concrete is narrow.

Conventionally, in order to send cables, etc. into concrete such as side walls, partition walls, slabs, etc. of buildings, or into the back of double ceiling walls, etc., buried items such as terminal protective covers and boxes in concrete Is being buried. These buried objects are fixed to the concrete formwork by nailing or the like, and then concrete is placed and buried in the concrete.
By the way, in the construction where the protective pipe is routed in order to pass the inside of the concrete side wall and route the cable etc. to the back of the double ceiling wall, the space between the formwork and the reinforcing bar embedded in the concrete is narrow, In particular, in a beam constructed of concrete, the reinforcing bars are closely arranged vertically and horizontally, so it was difficult to fix the buried object to the formwork by nailing.

  In view of this, there has been proposed a fixture for a concrete buried object disclosed in Japanese Utility Model Laid-Open No. 5-5209. The fixture for a concrete buried object is for dropping the concrete buried object from a concrete formwork and fixing it to a formwork that forms a side wall such as a beam of a building. As shown in FIG. 8 (a), the fixture 71 is produced by bending a metal plate into an L shape, and a fixing portion 72 to the first mold 61 for forming the concrete wall surface W of the slab 65; , And an arm portion 73 for attaching the embedded object 74. The fixing portion 72 is formed with an insertion hole through which the nail 4 and a screw are inserted. In addition, the arm portion 73 is provided with a pair of left and right protrusions that are bent toward the fixed portion 72, and after the protrusions are fitted into the notches of the flange formed on the peripheral edge of the embedded object 74, the arm 73 is sandwiched. It is bent so as to be attached to the fixture 71.

When the embedded object 74 is embedded in the beam 64 using the fixing tool 71, the embedded object 74 is attached to the arm portion 73 of the fixing tool 71 as shown in FIG. After the conduit 75 is connected, it drops into the formation space of the beam 64 from above, and the embedded object 74 is brought into close contact with the second formwork 62 for forming the beam 64. In this state, the fixing portion 72 is brought into contact with the first mold 61 forming the slab 65, the nail 4 is inserted into the insertion hole of the fixing portion 72, and driven into the first mold 61, whereby the fixing tool 71 is The first mold 61 is fixed. Next, concrete is placed, and as shown in FIG. 9, the fixture 71 and the buried object 74 are buried. After the embedment, the cable C is routed from the opening of the embedment 74 to the back of the double ceiling wall.
Therefore, according to this fixture 71, the fixing portion 72 can be fixed to the first mold 61 by nailing in a wide space on the first mold 61 away from the reinforcing bar 63, and thus the embedded object 74 Can be easily attached to the formwork.
Japanese Utility Model Publication No. 5-5209

  However, in the concrete embedded fixture 71 described in the Japanese Utility Model Laid-Open No. 5-5209, the embedded object 74 is attached to the arm portion 73, and the fixed portion 72 to the embedded object 74 are largely separated from each other. A space is formed. The fixing tool 71 is firmly fixed to the first mold 61 at the fixing part 72, but the embedded object 74 is attached to the end of the arm part 73 far away from the fixing part 72. The opening is only lightly touching. For this reason, the arm part 73 warps in the direction orthogonal to the surface thereof and the end part easily shakes with respect to the second formwork 62, and when concrete is placed, the placement pressure and the opening of the embedded object 74 are The space between the two molds 62 can be easily spread and the toro may enter the opening from the gap.

On the other hand, in order to avoid this, a force in the left direction in FIG. 8A along the surface of the first mold 61 is applied to the fixing portion 72, and the entire fixing tool 71 is strongly pressed against the second mold 62 side. On the other hand, if the opening of the embedded object 74 is pressed against the second mold 62, as shown in FIG. 8 (b), the distance between the upper ends in the space between the fixed part 72 and the embedded object 74 becomes narrower. The bending angle between the fixing part 72 and the arm part 73 slightly changes from a right angle to a wide angle, the arm part 73 is inclined to the opposite side to the second mold 62, and the embedded object 74 is connected to the upper end corner part and the first part. The contact point O with the two molds 62 is inclined at the fulcrum. As a result, a gap S is formed between the lower end of the buried object 74 and the second mold 62, and a concrete trowel enters the opening from the gap S in the same manner as described above.
As described above, it is difficult to hold and position the embedded object 74 in a state of being in close contact with the mold using the fixture 71.

In addition, the fixing tool 71 described in the above publication is attached to the arm 73 of the fixing tool 71 and connected to the conduit 75, and then dropped into the formation space of the beam 64 from above, so that the second mold 62 The embedded object 74 is in close contact with each other, but at that time, the interval between the second mold 62 and the reinforcing bar 63 is narrow, and it is difficult to perform the connection work. After connecting to the buried object 74, the fixture 71 and the buried object 74 are dropped into the space where the beam 64 is formed, and the conduit 75 is pushed back downward. However, depending on the situation of the laying path of the conduit 75, it may be difficult to push back. For this reason, the conduit 75 is preferably connected to the connection portion of the embedded object 74 after the fixing tool 71 is first fixed to the mold and the embedded object 74 is disposed at a predetermined position of the mold. In some cases.
However, since the embedded object 74 is separated from the fixed part 72 and is disposed in a narrow space between the second formwork 62 and the reinforcing bar 63, the fixing tool 71 places the hand in the narrow space after the embedded object 74 is disposed. It is very difficult to insert and connect the conduit 75 to the buried object 74.

  Therefore, the present invention ensures that the opening is in close contact with the formwork surface in a place where the concrete surface is perpendicular to the beam or slab of the building and the space between the formwork and the reinforcing bar embedded in the concrete is narrow. Concrete burial that can be held and positioned, so that it is possible to reliably prevent the toro from entering the opening when placing concrete, and to easily connect protective pipes for wiring and piping materials to the connection part The issue is the provision of goods.

  The concrete embedment according to claim 1 is fixed to a concrete formwork forming an orthogonal concrete wall, embedded in concrete, and installed at a corner of the concrete wall, to which a protective pipe is connected. A connection part, an opening exposed from the concrete wall surface for drawing out the wiring / pipe material drawn into the protective tube from the concrete wall surface, and two orthogonal surfaces, which are continuous with the orthogonal two surfaces of the concrete formwork And the opening is formed on at least one of the contact surfaces.

  The concrete wall corresponds to a side wall of a building beam, a partition wall, a floor wall of a slab, and the like, and a concrete buried object is installed at a corner where these concrete walls are orthogonal to each other. Here, the “corner portion” is a state in which one contact surface is in contact with and fixed to one mold frame and the other contact surface is separated from the other mold frame in an orthogonal portion of the concrete wall. It is a part of the range where displacement can be avoided, and the opening is formed over the two contact surfaces, or one opening is adjacent to or slightly separated from the orthogonal part of the concrete wall and the vicinity thereof Means part.

  The connection part of the concrete buried object is a part to which a protective pipe disposed in the concrete is connected, and a wiring material such as a cable and a piping material such as a wire pipe and a water supply pipe are drawn into the protective pipe. The wiring / pipe material drawn into the protective pipe enters the buried object from the connection portion, and is further drawn out from the opening exposed from the concrete wall surface to the outside, for example, the back of the double ceiling wall. The abutment surface that abuts on the concrete formwork of the buried object is formed by two orthogonal surfaces to contact the two orthogonal surfaces of the moldwork, and is continuous with the two orthogonal surfaces of the moldwork. And abut. That is, the two surfaces of the contact surfaces are formed adjacent to each other without a space existing between the formwork and the embedded object such as a conventional fixture. The opening may be formed on only one of the two contact surfaces, or on both of them. When the opening is formed on one abutment surface, the other abutment surface is generally a fixed side to the mold by nailing or the like. When the openings are formed on both contact surfaces, the openings may be in communication with each other or may be independent. Furthermore, the opening may be formed on the entire surface of the contact surface, or may be formed partially. The connecting portion is generally provided on the contact surface side having the opening since the wiring / pipe material drawn into the inside of the protective tube connected thereto is drawn out from the opening.

  The concrete buried object according to claim 1 is configured in this way, and two contact surfaces that are orthogonal to each other are continuous and formed at adjacent positions, so that one of the contact surfaces is orthogonal by nailing. By simply fixing to one mold frame, the opening formed on the other abutment surface can be reliably held and positioned in a state of being in close contact with the other mold frame surface. That is, in the conventional fixture for buried objects, a space is created between the fixed part to one orthogonal mold and the buried object attached to the end of the arm part. Because it is far away from the fixing part of the fixing tool, the arm part is warped and the end part is shaken so that the opening of the embedded object is easily separated from the formwork. If the object is pressed in the direction along the surface of the mold, the embedded object may be inclined together with the arm portion with the end portion as a fulcrum, and the opening may be separated from the mold frame. As described above, since two orthogonal contact surfaces are formed at adjacent positions, such a problem does not occur.

In addition, by placing either one of the two contact surfaces on the fixed side to the mold and placing it on the mold away from the reinforcing bars, nailing and the like can be performed in a wide space. The embedded object can be easily fixed to the formwork.
And since the two surfaces of the contact surface are in a continuous position, the connecting portion provided on the other contact surface side is also located near the contact surface on the one fixed side and easy to work. Therefore, the protective tube can be easily connected to the connecting portion with good workability.

  In the concrete-embedded object according to claim 2, an insertion hole through which a fixing member for fixing to the concrete mold is inserted is formed in at least one of the contact portions having the contact surface, and the connection portion is connected to the insertion portion. It is formed toward the non-contact surface side of the contact portion in which the hole is formed. Here, examples of the fixing member include a nail and a screw. The insertion hole may be formed in advance or may be formed at the time of fixing to a mold such as nailing. The connecting portion only needs to be directed to the side opposite to the abutting surface of the abutting portion in which the insertion hole is formed, and the direction thereof may be perpendicular or oblique to the corresponding abutting surface. .

  According to a third aspect of the present invention, the connecting portion is formed at a position where the connecting portion protrudes toward the non-contact surface side of the contact portion in which the insertion hole of the fixing member is formed.

  According to a fourth aspect of the present invention, the insertion hole of the fixing member is formed on one contact surface, the opening is formed on the other contact surface, and the one contact surface is the other contact surface. It extends in the direction orthogonal to the other contact surface from the end of the opening of the contact surface.

  According to a fifth aspect of the present invention, the connecting portion is provided so as to be capable of turning in a state where the connection port to which the protective tube is connected is inclined at a predetermined angle with respect to the turning shaft. For example, the connection portion is attached to the main body by a connector having a shape in which the tube shaft at the connection port of the protective tube is bent in a substantially square shape with respect to the tube shaft at the attachment portion to the main body of the embedded object. It can be swivelable.

  In the first aspect of the present invention, since the two orthogonal contact surfaces are continuous with each other and formed at adjacent positions, the concrete surfaces are orthogonal to each other by a beam or slab of the building and embedded in the formwork and concrete. Can be held and positioned in a state where the opening formed on the other abutment surface is in intimate contact with the other formwork surface, so that the toro Intrusion into the opening can be surely prevented. Further, the protective tube can be easily connected to the connecting portion with good workability.

  In the invention of claim 2, since the connection portion is formed toward the space side where the contact surface on the fixed side where the insertion hole is formed is easy to work, a protective tube drawn into the concrete such as a beam or a slab is provided. It is possible to connect to the connecting portion with good workability.

  In the invention of claim 3, since the connecting portion protrudes toward the non-contact surface side of the contact portion in which the insertion hole of the fixing member is formed, the protective tube can be easily operated as in the case of claim 2. It is possible to connect to the connection part well.

  According to a fourth aspect of the present invention, the insertion hole of the fixing member is formed in one contact surface, the opening is formed in the other contact surface, and the one contact surface is the other contact surface. Since it is extended from the edge part of the opening of a surface in the direction orthogonal to this other contact surface, there exists an effect similar to Claim 2 and Claim 3.

  In the invention of claim 5, since the connection port of the connection part is provided so as to be able to turn in a state inclined at a predetermined angle with respect to the turning shaft, the protective tube is drawn into the connection part of the buried object from multiple directions. It is possible to connect, and accompanying this, it is possible to prevent sudden bending of the protective tube. And since it is possible to match the connection port of a connection part with the direction which opposes the edge part opening of a protective tube, the connection operation | work of a protective tube can be performed more easily.

<First embodiment>
Hereinafter, the concrete buried object of 1st embodiment of this invention is demonstrated based on FIG. 1 thru | or FIG. Here, FIGS. 1 and 2 show the embedded object, FIG. 3 shows an example of installation of the embedded object on a mold, FIG. 4 shows another embedded object, and FIG. 5 shows an example of formation of the embedded object. .
1 and 2, an embedded object 1 is embedded in concrete as a protective cover, and is embedded in a corner where a concrete wall is orthogonal to a beam, a slab, or the like of a building. The buried object 1 includes a connecting portion 11 to which a bellows-like corrugated pipe P serving as a protective pipe is connected, and a concrete wall surface W for pulling out a cable C serving as a wiring drawn into the corrugated pipe P from the concrete wall surface W. And an abutment surface that is formed by two surfaces of a first abutment surface 22 and a second abutment surface 32 that are orthogonal to each other, and that abuts continuously on the two orthogonal surfaces of the concrete formwork. ing. The first abutment surface 22 is formed on the first abutment portion 21 that is fixed to one orthogonal first mold 61 by nailing, and the second abutment surface 32 is adjacent to the first abutment portion 21. The second abutment portion 31 is formed, abuts against the other second mold frame 62 orthogonal thereto, and the opening 3 is formed. The buried object 1 is formed of a synthetic resin material such as ABS, but may be formed of other metal material, wood, or the like. Hereinafter, each component will be described in detail.

The main body 2 of the buried object 1 has a shape of one divided body obtained by cutting a cylinder with a diagonal slope, and the inside is a space through which the cable C is inserted.
The connecting portion 11 is formed by a connector and is provided on the inclined surface 2 a of the main body 2. As shown in FIG. 1B, the connecting portion 11 is composed of a connector main body 12 and a tightening nut 13, and the connector main body 12 has a connecting port to which a corrugated pipe P is inserted and connected at one end side. 14, and the other end side is provided with a screwed portion 15 made of a male screw screwed with the female screw of the tightening nut 13, and the base end side of the screwed portion 15 is provided with a mounting hole 2 b of the inclined surface 2 a of the main body 2. A collar portion 16 is provided in contact with the peripheral edge. The connecting portion 11 is attached to the inclined surface 2a by the flange portion 16 of the connector main body 12 sandwiching the inclined surface 2a of the main body 2 with the tightening nut 13. The connection port 14 of the connection portion 11 is provided with a plurality of elastic locking pieces 17 at the peripheral edge of the opening 3 integrally provided on the inner side along the inner wall at equal intervals in the circumferential direction. A locking claw 18 is formed on the. When the end of the corrugated tube P is pushed into the connection port 14 of the connecting portion 11, the elastic retaining piece 17 elastically moves backward in the outer peripheral direction to allow the corrugated tube P to be inserted and the retaining claw 18 Lock in the annular recess of the corrugated tube P. As a result, the corrugated pipe P is connected to the connection portion 11 simply by being inserted into the connection port 14.

  In addition, the connection portion 11 is bent at a predetermined angle with respect to the screwed portion 15 at a portion where the connection port 14 is formed. For this reason, the connection port 14 has a so-called swinging structure that turns in a state inclined by a predetermined angle with respect to the turning axis when the tightening nut 13 is loosened and turned. By tightening the nut 13, the direction of the connection port 14 can be set to an arbitrary angle in the circumferential direction. In addition, the connection part 11 shown with the dashed-two dotted line of FIG.1 (b) shows the state reversed 180 degree | times from the solid line position.

  Next, one of the first contact surfaces 22 of the contact surfaces orthogonal to each other is in contact with the first mold frame 61 orthogonal to the first contact portion 21 having the first contact surface 22. Is formed in a substantially rectangular plate shape, and plural ribs 23 in FIG. 1 and FIG. 2 are erected in parallel toward the outer side opposite to the first contact surface 22. Yes. Further, the second and fourth ribs 23 are provided with boss holes 24 through which the nails 4 as fixing members are inserted. As shown in FIG. 2 (d), the boss hole 24 is formed by an outer cylindrical portion 24a and an inner cylindrical portion 24b that are concentrically arranged, and the inner cylindrical portion 24b is formed by an outer cylindrical portion by a thin connecting portion 24c at the bottom. The part 24a is detachably connected. Therefore, after placing the concrete, as shown in FIG. 2 (e), the tip of the nail 4 protruding from the concrete wall W is grasped using a tool such as pliers and pulled downward to connect. The portion 24c is broken, and the nail 4 can be extracted together with the inner cylindrical portion 24b. Since the rib 23 is provided, the rigidity and strength of the entire first contact portion 21 are increased, the shape is stabilized, and a uniform flat first contact surface 22 can be secured. The entire surface 22 can be brought into close contact with the first mold 61. Further, the rib 23 holds the boss hole 24 in a vertical state to prevent the boss hole 24 from being inclined or falling down.

  Next, the other second abutment surface 32 is formed continuously or adjacent to the first abutment surface 22 in a direction orthogonal to the first abutment surface 22 and is orthogonal to the first mold frame 61. An opening 3 is formed for contacting the cable C drawn into the corrugated pipe P from the concrete wall surface W. That is, from the first contact surface 22 side, the first contact surface 22 extends from the end of the opening 3 of the second contact surface 32 in a direction perpendicular to the second contact surface 32. Will be. The second contact portion 31 having the second contact surface 32 has a substantially rectangular frame shape and is prevented from being deformed by warping or twisting. A pair of triangular reinforcing ribs 2 c are formed on the left and right sides between the first contact portion 21 and the second contact portion 31 at both end portions of the main body 2. This increases the rigidity and strength at the joint between the first contact portion 21 and the second contact portion 31, and maintains the first contact surface 22 and the second contact surface 32 in a more stable orthogonal state. be able to.

Next, a description will be given of a method in which the buried object of the first embodiment configured as described above is embedded in, for example, a corner 66 where the side wall of the beam 64 and the slab 65 of the building shown in FIG. To do. In FIG. 3A, the first mold 61 is disposed in the horizontal direction to form the slab 65, and the second mold 62 is installed in the vertical direction to form the side wall of the beam 64.
In order to embed in the corner portion 66 where the side wall of the beam 64 and the slab 65 are orthogonal to each other as shown in FIG. 3A, first, the direction of the connection port 14 is set while loosening the tightening nut 13 of the connection portion 11 of the embedded object 1. Is matched with the end portion of the corrugated pipe P disposed at the formation location of the slab 65 and the like, and then the clamping nut 13 is tightened to sandwich the inclined surface 2a of the main body 2 so that the connecting portion 11 is connected to the corrugated pipe P. Adjust to the direction corresponding to the end of the and fix. Next, the first abutment surface 22 of the embedded object 1 is brought into contact with the first mold 61 and the second abutment surface 32 is brought into contact with the second mold 62. The nail 4 is driven into the two boss holes 24 to fix the buried object 1 to the first mold 61. At this time, the second abutment surface 32 of the second abutment portion 31 is orthogonal to the first abutment surface 22 of the first abutment portion 21 and is continuously provided. Ensure close contact with 62. Further, since the upper space of the first contact portion 21 is wide, the nailing operation can be easily performed. Thereafter, the end portion of the corrugated tube P is inserted into the connection port 14 of the connection portion 11 to be connected. At this time, the connection portion 11 is formed toward the anti-first contact surface 22 side of the first contact portion 21, that is, toward the upper side of the first contact portion 21 in FIG. A wide space is formed on the top of the. In addition, the connecting portion 11 is formed at a position protruding from the first abutting portion 21 to the side opposite to the first abutting surface 22, that is, above the plane having the same height as the first abutting surface 22 in FIG. Is done. Therefore, the connection work of the corrugated pipe P can be performed easily.

  Once the buried object 1 is installed in the formwork, next, concrete is placed in the formwork. At this time, the first abutment surface 22 is firmly fixed to the first mold 61 by nailing, and the second abutment surface 32 is stably in close contact with the second mold 62. Intrusion into the buried object 1 is reliably prevented. When the concrete is hardened, the mold is removed, and the nail 4 nailed by the first abutting portion 21 and protruding from the concrete surface is grasped with a tool such as pliers and pulled out. Since the opening 3 is exposed from the side wall of the beam 64 after the embedded object 1 is embedded in the concrete, the cable C drawn into the corrugated pipe P is passed through the embedded object 1, and the side wall of the beam 64 is passed through the opening 3. Pull it out and wire it behind the double ceiling wall.

Next, the operation of the embedded object 1 of the first embodiment will be described.
The buried object 1 is installed at a corner 66 where the side wall of the beam 64 and the slab 65 are orthogonal to each other, and the first abutting surface 22 and the second abutting surface 32 that are orthogonal to each other are continuous and formed at adjacent positions. Thus, the opening 3 of the second contact surface 32 is also located at the corner portion 66. Here, in the conventional fixture of the embedded object, a space is created between the fixed part to one of the orthogonal molds and the embedded object attached to the end of the arm part, and the embedded object is the fixture. It is far away from the fixed part. For this reason, the opening of the embedded object is only in light contact with the mold frame and easily separated from the mold frame, and the angle between the fixed portion and the arm portion slightly changes in the expanding direction from 90 degrees. As a result, the opening of the embedded object attached to the lower part of the arm part is greatly shaken away from the formwork. However, the embedded object 1 according to the first embodiment does not cause such inconvenience because the second contact surface 32 is located at the corner 66 that is very close to the first contact surface 22 as described above. . As a result, the opening 3 of the second contact surface 32 can be securely held and positioned in close contact with the surface of the second mold 62, and the toro can enter the opening 3 when placing concrete. Can be prevented. This is the same in the case where the opening 3 is formed adjacent to the orthogonal portion between the side wall of the beam 64 and the slab 65, as well as in the case where the opening 3 is formed slightly spaced from the orthogonal portion.

  In addition, since the second contact surface 32 is located at a position that is continuous and very close to the first contact surface 22, the connection portion 11 provided in the second contact portion 31 is also operated in the same manner as the first contact portion 21. Therefore, the corrugated pipe P can be easily connected to the connecting portion 11 with good workability.

By the way, as shown in FIG. 3A, the embedded object 1 of the above embodiment has the first contact surface 22 in contact with the first mold 61 and the second contact surface 32 in contact with the second mold 62. However, depending on the size of the gap between the second mold 62 and the reinforcing bar 63, the first abutment surface 22 is in contact with the second mold 62, and the second abutment surface 32 is in contact with the first mold 61. It is also possible to place it in the mold with the connection port 14 of the connection portion 11 facing rightward in FIG. That is, the embedded object 1 of the first embodiment is originally disposed in a narrow space such as between the mold frame and the reinforcing bar 63 and is installed in the mold frame in the direction as shown in FIG. However, it is also possible to arbitrarily select the installation direction on the mold according to the laying direction of the corrugated pipe P or the like.
Further, the embedded object 1 is driven by the nail 4 into the first contact portion 21 and fixed to the mold frame, but can also be driven into the second contact portion 31 and fixed.

  In addition, for example, as shown in FIG. 3 (b), the embedded object 1 of the first embodiment can be embedded and installed in a narrow corner where the concrete side wall and the slab 65 are orthogonal to each other. In FIG. 3 (b), the first contact surface 22 of the buried object 1 is in contact with the first mold 61 in the horizontal direction, and the second contact surface 32 is in contact with the second mold frame 62 in the vertical direction. The corrugated pipe P that hangs down from the upper side of the side wall or the corrugated pipe P that passes through the slab 65 can be connected to the connecting portion 11. In the case of FIG. 3B as well, the first contact surface 22 is brought into contact with the vertical second mold 62 and the second contact surface 32 is brought into contact with the horizontal first mold 61. At the same time, it is possible to nail the second contact portion 31 and fix it to the mold. In this case, it is possible to connect the corrugated pipe P which has been arranged with the connection port 14 of the connection portion 11 facing leftward in FIG.

In addition, although the embedded object 1 of 1st embodiment forms the connection part 11 with a separate connector, and is using what is called a swing mechanism, it is good also as what fixed the connection part 11 to fixed direction.
Moreover, when the connection part 11 is fixed to a fixed direction, the connection part 11 can also be integrally formed with the main body 2, as shown in FIG. In FIG. 4, the main body 2 is formed with a vertical surface on the connection portion 11 side, the connection port 14 of the connection portion 11 faces a certain horizontal direction, and the connection end portion of the corrugated pipe P extends from the horizontal direction as in the above embodiment. Similarly, it can be connected by being inserted into the connection port 14. The second contact portion 31 is formed in a flat plate shape. Here, the surface on the connection part 11 side of the main body 2 may be formed in an inclined surface instead of being vertical, and the connection port 14 of the connection part 11 is fixed not in the horizontal direction but obliquely upward or directly above. Needless to say. In this way, when the main body 2 and the connection port 11 are integrally formed and the entire embedded object 1 has an integrated structure, the direction of the connecting part 11 is fixed in a fixed direction, but the embedded object 1 is formed by integral molding of resin. Can be formed at low cost and parts management becomes easy.
In addition, the connecting portion 11 is provided on the inclined surface 2 a of the main body 2, but may be provided on another upper portion of the main body 2, for example. However, when the connecting portion 11 is provided on the inclined surface 2 a of the main body 2, the first abutting portion 21 is on the side opposite to the first abutting surface 22, that is, from a plane having the same height as the first abutting surface 22. Since it protrudes upward, the connection work of the corrugated pipe P can be performed easily.

Further, as shown in FIG. 5, the buried object 1 is disposed between the main body 2 and the second contact portion 31, or between the first contact portion 21 and the second contact portion 31, although not illustrated. A separate structure such as two or three divisions can also be used. However, it is desirable that the first contact portion 21 and the second contact portion 31 are integrally formed to ensure a squareness.
In addition, about the point which makes the embedded thing 1 an integral structure or a separate structure, it is the same in each following embodiment.

Furthermore, the main body 2 is formed in the shape of one divided body obtained by cutting a cylinder with a diagonal slope, but is not limited to this shape, and may be formed in the shape of a box or the like.
The insertion hole through which the nail 4 is inserted is formed by two boss holes 24, but the embedded object 1 has both sides of the second contact surface 32 in contact with the second formwork 62, and the side Therefore, it is possible to provide only one boss hole 24 at the center of the first contact portion 21. Further, the insertion hole may be simply a through hole provided in the plate portion instead of the boss hole 24.

<Second embodiment>
Next, the concrete embedded object 41 of the second embodiment of the present invention will be described with reference to FIG.
In FIG. 6, an embedded object 41 is embedded in concrete as a protective cover in the same manner as the embedded object 1 of the first embodiment, and is embedded in a corner where a concrete wall is orthogonal to a beam, a slab, or the like of a building. Installed. The buried object 41 is formed symmetrically, and is an opening that is exposed from the concrete wall surface W in order to draw the cable C drawn into the corrugated pipe P from the connection wall 11 and the corrugated pipe P. And an abutting surface that is formed by two surfaces, ie, a first abutting surface 22 and a second abutting surface 32 that are orthogonal to each other and that continuously abuts on the two orthogonal surfaces of the concrete mold. The embedded object 41 is integrally formed of a synthetic resin material such as ABS.

The first contact portion 21 having the first contact surface 22 and the second contact portion 31 having the second contact surface 32 have the same shape and are each formed in a rectangular plate shape.
The connection portion 11 is formed in a tubular shape, and is extended at a bent portion between the first contact portion 21 and the second contact portion 31 in a direction that forms an angle of 45 degrees with these contact portions. The connecting portion 11 is formed in a U-shaped notch in two opposite positions on the peripheral wall at the base end of the opening of the connection port 14 and elastically expands in the radial direction around the base end. A pair of elastic locking pieces 42 are formed. A locking claw 43 is formed on the inner surface of the free end of the elastic locking piece 42 to be elastically locked to the annular recess of the corrugated tube P. Further, a release knob 44 is formed on the outer surface side of the pair of elastic locking pieces 42, 42 to release the locking between the corrugated tube P and the locking claw 43 by pulling outward.
The opening exposed from the concrete wall surface W is provided in the first contact part 21 and the second contact part 31 so that the internal space of the tubular connection part 11 extends to the anti-connection port 14 side and penetrates as it is, The first contact surface 22 and the second contact surface 32 are provided with substantially semicircular openings 3a and 3b, respectively. The opening 3a of the first contact surface 22 and the opening 3b of the second contact surface 32 communicate with each other to form one substantially circular opening and straddle both contact portions. An insertion hole 45 through which the nail 4 is inserted is formed in each of the first contact portion 21 and the second contact portion 31.

  The buried object 41 formed in this way is that the buried object 1 of the first embodiment is formed on both contact surfaces, whereas the opening 3 is formed only on the second contact surface 32. Is different. Therefore, it is basically installed in the mold like the buried object 1 of the first embodiment, and has the same effects. However, since the openings are provided on both the first contact surface 22 and the second contact surface 32, after placing the concrete, the openings are exposed on each of the two concrete wall surfaces W orthogonal to each other. The cable C drawn into the pipe P can be pulled out from any opening of the two concrete walls after being inserted through the buried object 41. Therefore, the cable C can be drawn out in an arbitrary direction behind the wall of the double ceiling by drawing a gentler curve, and the peripheral wall of the cable C may be damaged due to abrupt bending and strong rubbing at a corner or the like. Can be prevented. Moreover, since it is formed symmetrically, any abutment surface may be brought into contact with the mold, so that the installation direction of the embedded object 41 is not mistaken and the installation work on the mold is not made. Improves.

For example, as shown in FIG. 3 (c), the embedded object 41 is installed across the first mold frame 61 and the second mold frame 62 at a corner portion 66 where the side wall of the beam 64 and the slab 65 are orthogonal to each other. can do.
In addition, instead of the elastic locking piece 42 formed by cutting out the U-shaped connection portion 11, for example, as with the connection portion 11 of the embedded object 1 of the first embodiment, the entire periphery of the opening is spaced. It is also possible to form a plurality of elastic locking pieces.

<Others>
As shown in FIG. 7, the embedded object of the present invention may be provided with two connection portions 11. In FIG. 7, the embedded object 51 has a nail driving insertion hole 52 in the first contact portion 21, the opening 3 is formed in the second contact surface 32 of the second contact portion 31, and A connecting portion 11 facing outward is provided at each end. Therefore, the buried object 51 can connect the corrugated pipe P drawn from two directions to both the connecting portions 11. Further, the buried object 51 is initially connected to either one of the connection ports 14 and then connected to the other connection port 14 by connecting the corrugated tube P, or the corrugated tube P This is convenient when changing the connection position to the opposite side.

  Furthermore, the embedded object of the present invention can be integrated by connecting a plurality of embedded objects in the lateral direction at the side portion. In this case, a plurality of corrugated pipes P can be concentrated and drawn in one place, and then distributed outside the concrete wall.

By the way, the opening exposed from the concrete wall surface W to pull out the cable C from the concrete wall surface W is not only one of the contact surfaces, but also the first contact such as the opening of the embedded object 41 of the second embodiment. Although it can also be formed in each of the contact surface 22 and the 2nd contact surface 32, in that case, each opening can also be formed in the thing independent from each other like 2nd embodiment. .
Moreover, in the said embodiment, although the one or two connection parts 11 are provided, you may provide three or more.

  In each of the above embodiments, the thin connecting portion 24c is provided in the nail driving boss hole 24 and the nail 4 protruding from the concrete wall surface W is pulled out after the concrete is placed. The nail 4 to be gripped can be grasped with a tool such as pliers and moved to the left or right, or can be removed by cutting the protruding portion with a cutting tool.

  Moreover, in each said embodiment, although the connection part 11 has connected the bellows-like corrugated pipe P which has an unevenness | corrugation to an outer peripheral wall, in addition, the outer peripheral surface which does not have an unevenness | corrugation in an outer peripheral wall is a smooth straight shape. Tubes can also be connected. In the case of a straight tubular body, it can be connected to the connecting portion 11 by means such as adhesion and fitting. Furthermore, in addition to the cable C, electric wires such as signal lines and piping materials such as water supply pipes and hot water supply pipes can be drawn into the protective pipe.

The concrete embedded object of 1st embodiment of this invention is shown, (a) is the perspective view, (b) is a longitudinal cross-sectional view. 1 shows the buried object of FIG. 1, (a) is a plan view, (b) is a front view, (c) is a left side view, (d) is an enlarged sectional view of a boss hole, and (e) is a nail from the boss hole. It is an expanded sectional view showing the state where it pulls out. The form which installs the embedded thing of this invention in a formwork is shown. The other concrete embedding object of 1st embodiment of this invention is shown, (a) is the perspective view, (b) is a top view, (c) is a left view, (d) is a front view. It is a disassembled front view which shows the structural example of the embedded thing of FIG. The concrete embedded object of the second embodiment of the present invention is shown, (a) is a perspective view, (b) is a plan view, (c) is a left side view, (d) is a front view, (e) is a right side view. (F) is a bottom view. It is a front view which shows the concrete buried thing of another embodiment of this invention. A conventional fixture for buried objects is shown. It is sectional drawing which shows the state after placing concrete using the fixing tool of the conventional buried thing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 41, 51 Embedded object 3, 3a, 3b Opening 4 Nail 11 Connection part 22 1st contact surface 24 Boss hole 32 2nd contact surface 61 1st mold frame 62 2nd mold frame 64 Beam 65 Slab 66 Corner | angular part C cable P corrugated pipe W concrete wall

Claims (5)

It is fixed to a concrete form forming an orthogonal concrete wall, embedded in concrete and installed in the corner of the concrete wall,
A connecting portion to which a protective pipe is connected, an opening exposed from the concrete wall surface for drawing out the wiring / pipe material drawn into the protective pipe from the concrete wall surface, and two orthogonal surfaces, A contact surface that continuously contacts two orthogonal surfaces;
The concrete embedding object, wherein the opening is formed on at least one of the contact surfaces. An insertion hole through which a fixing member for fixing to the concrete mold is inserted is formed in at least one of the contact portions having the contact surface,
The concrete embedded according to claim 1, wherein the connection portion is formed toward an opposite contact surface side of the contact portion in which the insertion hole is formed.   The concrete embedded according to claim 2, wherein the connection portion is formed at a position protruding to a side opposite to the contact surface of the contact portion in which the insertion hole of the fixing member is formed. The insertion hole of the fixing member is formed on one contact surface, and the opening is formed on the other contact surface,
The said one contact surface is extended in the direction orthogonal to this other contact surface from the edge part of the opening of said other contact surface, The Claim 2 or Claim 3 characterized by the above-mentioned. Concrete buried object.   The said connection part is provided so that turning is possible in the state in which the connection port to which the said protective tube is connected inclines by the predetermined angle with respect to the turning axis | shaft. Concrete buried object.

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