JP4189587B2 - Wiring / piping material cover, wiring / piping material connector, and wiring / piping material coupling device - Google Patents

Description

The present invention is embedded in concrete and connected to a wiring / piping material protection pipe for protecting wiring / piping materials such as cables and water supply pipes, and is used for drawing the wiring / piping material into a double ceiling, etc. The present invention relates to a wiring / piping material cover, a wiring / piping coupler, and a wiring / piping coupling device .

  Conventionally, for example, a technique disclosed in Japanese Patent Application Laid-Open No. 2002-252916 has been disclosed as a cover device for this type of wiring / piping material. As shown in FIG. 21, the wiring / piping material cover device 1 described in JP-A-2002-252916 has a cover body 11 having an opening surface 12 that is flush with the concrete surface 43 and faces the outside of the concrete, The wiring / piping material protection tube 44 for protecting the wiring / piping material is composed of a connector 45 for connecting to the cover body 11. The connecting tool 45 is inserted into a mounting hole provided on one side of the cover body 11, and has one connecting member 46 housed inside the cover body 11 and the outside of the cover body 11. Embedded in the concrete body 42, screwed into the one connecting member 46, and sandwiched and connected to one end side of the cover body 11 with the connecting member 46, and the other connecting member 47 The outer peripheral surface of the other connecting member 47 is pressed by moving the outer peripheral surface of the connecting member 47 in the tube axis direction of the protective tube 44 for the wiring / piping material. And a sleeve 48 for connecting 44. Although not shown, the one connecting member 46 is connected to another protective pipe for wiring / piping material from the outside of the concrete surface 43 through the opening surface 12 of the cover body 11.

  The protective pipe 44 for wiring / piping material connected to the other connecting member 47 is a smooth pipe having a smooth outer peripheral wall. Further, the wiring / pipe material protective tube connected to the one connecting member 46 is a corrugated tube having an uneven surface on the outer peripheral wall. The one connecting member 46 is elastically expanded in the radial direction on the inner surface, and is provided with an elastic piece 46a having an engaging claw 46b at the tip. By simply inserting the protective tube for wiring / piping material, The engaging claw 46b of the elastic piece 46a engages with the uneven surface of the outer peripheral wall of the wiring / piping material protection tube, and the wiring / piping material protection tube is connected in a retaining state.

  Further, the cover body 11 is provided with a removal prevention portion 49 that prevents the cover body 11 from coming out of the concrete body 42 in a direction substantially perpendicular to the opening surface 12.

  Since the wiring / piping material cover device 1 is configured in this manner, in particular, after attaching a formwork to the opening surface 12 of the cover body 11 via a fixture such as a nail and placing concrete, When removing the formwork, the cover body 11 can be prevented from coming out together.

  Further, in order to reuse the cover body 11 at a later date after removing the formwork, or to refill concrete in the space to compensate for the strength reduction of the concrete body 42 due to the space formed by the cover body 11. When the cover body 11 is removed, it can be easily removed from the concrete body 42 simply by removing one connecting member 46 inside the cover body 11 and lowering the cover body 11 vertically downward.

By the way, as a coupling tool for connecting the protective tube for wiring / piping material to the cover body 11, there is a coupling tool 31 constituted by a coupling tool body 32 and a nut 33 as shown in FIG. 22. The connector main body 32 has a protective tube connecting portion 34 to which a cable protective tube 41 made of a corrugated tube is connected to the outside of the cover body 11, and the other end side is provided on one side of the cover body 11. Projecting into the cover body 11 from the attachment hole 16, a threaded portion 36 is formed on the outer peripheral surface of the projecting portion 35, and a flange portion 37 is formed at a substantially central portion. Further, the nut 33 is screwed to the threaded portion 36 of the outer peripheral wall of the protruding portion 35 of the connector main body 32. The connector 31 is attached to one end of the cover body 11 with the attachment portion of the cover body 11 sandwiched between the flange portion 37 and the nut 33 of the connector body 32.
JP 2002-252916 A

  However, the connector 31 shown in FIG. 22 is a wiring / piping material cover in which a screw portion 36 is formed on the outer peripheral surface and a nut 33 is screwed into a protruding portion 35 protruding into the cover body 11. In the case of the apparatus 1, the cover may be removed for reuse or to refill the concrete so as to compensate for the strength reduction of the concrete body 42 due to the space formed by the cover body 11. At this time, since the protruding portion 35 of the connector 31 protrudes inside the cover body 11, it interferes with the attachment hole 16 of the cover body 11, and cannot be pulled out and removed in that position. . Therefore, in the case of such a cover body 11, the cover body 11 is removed downward while rotating around one end 24 on the attachment hole 16 side of the cover body 11.

  However, since the attachment hole 16 to which the connector 31 of the cover body 11 is attached is usually formed with substantially the same diameter as the protruding portion 35 of the connector body 32, as shown in FIG. Even if the cover body 11 is to be removed while rotating about the axis, the turning radius R3 from the one end 24 to the upper edge of the attachment hole 16 is from the one end 24 to the protrusion 35 of the connector body 31. Since it is smaller than the turning radius R2 to the tip upper corner portion 35a, the upper edge portion of the attachment hole 16 interferes with the tip corner portion 35a of the projection portion 35 of the connector main body 32, and the cover body 11 is further moved. It could not be rotated and could not be removed. Moreover, if it tries to remove it by forcibly turning, it will crush the screw part 36 of the protrusion part 35 of the said connector main body 32, and another connector cannot be connected to this connector main body 32. It becomes.

  Therefore, the present invention is such that a part of the connecting tool for connecting the protective pipe for the wiring / piping material protrudes inside, and after embedding concrete, one end is turned around the shaft without damaging a part of the connecting tool. An object of the present invention is to provide a wiring / piping material cover body, a wiring / piping connector, a wiring / piping material cover device, and a wiring / piping coupling device that can be smoothly removed while being moved.

  The wiring / piping material cover body according to claim 1 is embedded in a concrete body, and is connected to a wiring / piping material protective tube via a coupling tool, part of the coupling tool covering the cover. An attachment portion that attaches so as to protrude into the body, and is attached to the attachment portion so that the cover body can be removed from the concrete by rotating around one end of the cover body after embedding concrete. The interference prevention part for preventing the attachment part and the connector from interfering during the rotation is provided.

According to a ninth aspect of the present invention, there is provided a wiring / piping material coupling device comprising the cover body according to any one of the first to sixth aspects and a coupling tool.

  The cover body is embedded in a concrete body, and is used for drawing cables and pipes such as cables and water pipes into a double ceiling, etc., and has an opening facing the outside in a state flush with the concrete surface. A surface is provided. The cover body is formed on one end side with an attachment wall to which a protection pipe for protecting wiring and piping materials such as a cable and a water supply pipe is connected, and an outer wall portion other than the attachment wall faces the opening surface side. It is formed by an inclined curved surface that is inclined, and after the wiring / pipe material passing through the protective tube disposed in the concrete penetrates the inside of the cover body from the connecting portion, it is drawn out from the opening surface to the outside. Has become.

  One end side, which is a part of the coupling member attached to the attachment part, protrudes into the cover body, but the attachment part and the connection tool are connected to the attachment part during the rotation. Since the interference prevention space for preventing the interference is provided, the cover body can be rotated and taken out from the concrete without interfering with a part of the coupling tool with one end as an axis.

  The interference prevention part of the cover body is formed by an interference prevention space or the like, and the distance from the rotation center of one end of the cover body to the edge of the interference prevention part is from the rotation center of one end of the cover body to the coupling tool. Is set larger than the distance to the tip corner which is the projecting end farthest from the rotation center. The attachment portion is formed as an insertion hole or the like, and when the cover body is rotated, the most projecting end of the connector is likely to interfere with the upper edge portion of the insertion hole. For this reason, the said interference prevention part removes a part of attachment wall of a cover body in the upper edge part of the said insertion hole, and is formed. In addition, the interference prevention part of the cover body can be of any size and shape, but it is only necessary to prevent interference with the tip corner part of the coupling tool. In order to prevent intrusion, it is desirable to form it corresponding to the outer shape and size of the protrusion of the connector and set it to the minimum necessary size.

In the invention according to claim 1, the attachment portion is formed by a connection hole through which the protruding portion of the coupler into the cover body can be inserted.

The invention according to claim 7 is a connector that is embedded in a concrete body and connects a protective pipe for wiring / piping material and a cover body for wiring / piping material,
The cover body has a mounting portion that is attached so that a protruding portion that is a part of the connector protrudes into the cover body;
After the concrete is buried, the attachment part and the connecting tool interfere with the connecting tool at the time of the turning so that the cover body can be removed from the concrete body by rotating about one end of the cover body. The interference prevention part which prevents this is provided .

The invention according to claim 1 is such that the interference preventing portion is formed in an interference preventing space provided in the attachment portion.

According to an eighth aspect of the present invention, there is provided a connector main body in which a connection pipe is connected to a protective tube of a wiring / piping material on one end side, and a protruding portion to the inside of the cover body is formed on the other end side; And a nut that is screwed onto the protruding portion of the main body. Thereby, a nut can be removed and a cover body can be taken out when needed.

According to a second aspect of the present invention, the interference prevention space according to the first aspect is closed by the connecting tool in a state where the connecting tool is attached. That is, a part of the coupling tool comes into contact with the attachment wall of the cover body to close the interference prevention space. This prevents the toro from entering the inside of the cover body from the interference prevention space of the cover body when placing concrete.

According to a third aspect of the present invention, in the cover body according to the first or second aspect, the engaging portion that engages the connecting tool in a state where the connecting tool is attached and holds the connecting tool in a fixed position. It is formed. The engaging portion can be formed, for example, as a step portion in which the upper end of the coupling tool comes into contact with the upper portion of the attachment portion of the cover body. Accordingly, the interference prevention space can be formed at the upper end portion of the connection hole as the attachment portion, and the bottom portion of the connection tool can be held at a position in contact with the lower end of the connection hole of the cover body. Positioning above the attachment portion prevents unnecessary space that is not related to prevention of interference with the protruding portion of the connector from being formed below the connector in the attachment portion. It can be formed in the minimum necessary size.

According to a fourth aspect of the present invention, the engaging portion according to the third aspect prevents the connecting tool from moving toward the interference preventing portion in a state where the connecting tool is attached. Thus, similarly to the third aspect, the bottom portion of the coupling tool can be held at a position where it contacts the lower end of the connection hole of the cover body, and the interference prevention space can be formed to the minimum necessary size.

The invention according to claim 5 is such that the central axis of the connection hole according to any one of claims 1 to 4 is separated from the central axis of the coupler. Such a connection hole is not a perfect circle, but can be formed, for example, as an ellipse in which two semicircles face each other and both ends of the semicircle are connected by two parallel straight lines.

In the present invention, the connection hole is formed by a long hole that is elongated toward the interference prevention unit.

In the present invention , at least the interference preventing portion side of the long hole is formed in a semicircular arc.

According to a sixth aspect of the present invention, the cover body according to any one of the first to fifth aspects is provided with a flange portion, and the engaging portion includes a plurality of coupling tools having different sizes of the flange portion. And is formed to be engageable with each other. The engaging portion can be formed, for example, by providing a step portion corresponding to the peripheral edge of the collar portion of the coupling tool, whereby a plurality of types of coupling tools having different collar sizes in one cover body. Can be connected.

According to a seventh aspect of the present invention, the protrusion of the connector is provided with an interference preventing portion for preventing the protrusion from interfering with the attachment portion of the cover body during rotation. Thus, similarly to the first aspect, the cover body can be rotated and taken out from the concrete without interfering with the protruding portion of the connector with one end as an axis.

The connecting device for wiring and piping according to claim 10 is embedded in a concrete body, and a cover body to which a protective pipe for wiring and piping material is connected, and the protective pipe for wiring and piping material is connected to the cover body. A connection device for wiring / piping provided with a connector,
The connecting device according to claim 7 or 8 , wherein the connector is attached to the cover body so that the interference prevention cutout portion is located on the upper side .

In the invention according to claim 7, the interference preventing portion is formed of an interference preventing notch portion that is obliquely cut from the base end portion to the tip end corner portion of the protruding portion.

  In the present invention, since the interference prevention portion is provided at the attachment portion of the cover body to which the connection tool is attached or the protrusion portion of the connection tool, one end side of the connection tool protrudes into the cover body. Even in such a case, after the concrete is placed, it can be removed while rotating the cover body around one end without interfering with the distal end portion of the connector protruding into the cover body. Thereby, after removing the formwork, it is possible to remove the cover body and reuse it without damaging the tip of the connector. Moreover, after removing a cover body, concrete can be refilled in the space formed by the cover body, and the strength reduction of the concrete body by the space can be compensated.

<First Embodiment>
A first embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 is a cross-sectional view showing a cover device in which a connector having a small outer diameter is connected to one end of the cover body of the present invention, and FIG. 2 is an outer diameter of the hook section on one end of the cover body of the present invention. It is sectional drawing which shows the cover apparatus formed by connecting a big coupling tool.

  1 and 2, the cover device 1 includes a cover body 11 and a coupling tool 31, and the coupling tool 31 is attached to one end side of the cover body 11. One end of a cable protection tube 41 as a protection tube is connected to the cover body 11. The cover body 11, the connector 31, and the cable protection tube 42 are embedded in a concrete body 42 such as a double ceiling. Although not shown, the cable protection tube is inclined in an oblique direction with respect to the concrete surface. For example, a cable that is a wiring / piping material is inserted into 41, and the cable is further drawn out of the concrete surface 43 through the inside of the cover body 11, or conversely, from the outside of the concrete surface 43. Is inserted into the cable protection tube 41.

  As shown in FIGS. 3 to 8, the cover body 11 has a shape obtained by roughly cutting a cylinder having a bottom wall into two diagonal surfaces, and the diagonal surface of the cylinder is a concrete surface and a surface. It becomes the opening surface 12 which is in one state and opens outward. A portion corresponding to the bottom wall of the cylinder, which is one end side of the cover body 11, is formed with an attachment wall 15, which is inclined obliquely upward from the opening surface 12, so that the connector 31 is attached. A portion corresponding to the side wall portion of the cylinder is an inclined side wall 13 of the cover body 11. An attachment hole 16 through which one end side of the connector 31 is inserted is provided at the center of the attachment wall 15, and the attachment 37 is formed by a flange 37 and a nut 33 of a connector body 32 of the connector 31 described later. The connector 31 is attached with the wall 15 interposed therebetween. The attachment wall 15 and the attachment hole 16 constitute an attachment portion 14 to which the connector 31 is attached.

  Formed on the outer peripheral portion of the opening surface 12 is a formwork contact portion 21 with which a formwork for placing concrete is contacted. Fixing tools such as nails are attached to both sides of the formwork contact portion 21. A fixing flange 22 is fixed to be fixed to the projection. The cover body 11 is integrally formed using a synthetic resin or the like, and can generally be easily formed by injection molding. The cross-section of the cover body 11 has the shape shown in FIG. 8, and when it is formed by injection molding, a core mold for forming the internal space 23 of the cover body 11 is filled after filling with a resin material. The molded product can be removed by releasing the mold while rotating downward about the one end 24 that is the distal end of the cover body 11 on the side of the attaching portion 14 in the mold contact portion 21.

  On the other hand, the connector 31 is composed of a connector body 32 and a nut 33 as shown in FIGS. The connector main body 32 is formed in a substantially cylindrical shape as a whole, and one end side is elastically hooked with a convex portion of an uneven surface formed on the outer peripheral surface of the cable protection tube 41 so that the cable protection tube 41 is pulled out. A protective tube connection portion 34 connected to the stopped state is formed. As shown in FIG. 10, the protective tube connecting portion 34 has elastic pieces 34a that elastically expand in the radial direction projecting at predetermined intervals in the circumferential direction as shown in FIG. An engaging claw 34b is formed to be engaged with the convex portion of the concavo-convex surface of the protective tube 41, whereby the tip of the cable protective tube 41 is inserted into the protective tube connecting portion 34 of the connector 31 and the elastic piece 34a. It can be easily connected just by inserting it against the elastic force. However, the cable protection tube 41 does not prevent connection to the connector 31 by other means.

  The other end side of the connector main body 32 is inserted into the attachment hole 16 of the cover body 11 to form a protruding portion 35 that protrudes into the internal space 23 of the cover body 11. A screw portion 36 in which a male screw is engraved is formed on the outer peripheral surface of the projecting portion 35, and the nut 33 is screwed to the screw portion 36. An annular flange 37 is provided at a substantially central portion of the connector main body 32, that is, at a boundary portion between the protective tube connecting portion 34 and the protruding portion 35. In the state where the connector 31 is connected to the cover body 11, the flange portion 37 abuts on the surface of the attachment wall 15 of the attachment portion 14 of the cover body 11, and the nut 33 is the attachment wall. The connecting tool 31 can be connected to the cover body 11 by being in contact with the back surface of 15 and sandwiching the flange 37 and the nut 33.

  Further, as shown in FIGS. 11 and 13, the attachment hole 16 of the cover body 11 superposes most of the two circles A1 and A2 having the same diameter centered on O1 and O2 to form the two holes. A crescent-shaped space that is formed in a shape in which circles are arranged side by side in the upper and lower sides of the figure and is not superposed on the upper circle A2 forms an interference prevention space 17 that is a feature of the present invention. The interference prevention space 17 corresponds to the interference prevention portion of the claims, and the protruding portion 35 of the connector 31 interferes with the attachment hole 16 when the cover body 11 is rotated when the cover body 11 is removed from the concrete body 42. That is, the protruding portion 35 of the coupling tool 31 is prevented from coming into contact with the attachment hole 16 and being caught. Here, in FIGS. 12 and 14, the upper edge of the interference prevention space 17 from the one end 24 of the cover body 11, that is, the one end 24 on the attachment portion 14 side of the mold contact portion 21 with which the mold contacts. The distance R1 is at least larger than the distance R2 from the one end 24 of the cover body 11 to the tip corner portion 35a of the protruding portion 35 of the connector 31. However, if the opening area of the interference prevention space 17 above the attachment hole 16 is larger than necessary, a gap is generated when the concrete is placed, and the concrete trough enters the internal space 23 of the cover body 11 from the gap. For this reason, it is desirable that the shape and size of the interference prevention space 17 correspond to the protruding portion 35 of the connector 31 as much as possible. 11 and 13, the hatched portion indicates a cross-sectional portion of the protruding portion 35 of the connector 31.

  When the protruding length of the protruding portion 35 of the coupling tool 31 is large, the interference preventing space 17 formed in the upper portion of the mounting hole 16 shown by hatching in FIG. It is necessary to form large corresponding to the protrusion length of the protrusion part 35 of the tool 31. As in the case of FIGS. 12 and 14, the size of the attachment hole 16 is such that the distance R1 from the one end 24 of the cover body 11 to the upper edge of the interference prevention space 17 is at least one end of the cover body 11. 24 is set to be larger than the distance R2 from the leading end corner portion 35a of the protruding portion 35 of the connector 31.

  The lower circle A1 in the attachment hole 16 has a slightly larger diameter than the protruding portion 35 of the connecting tool 31, and the center O1 of the lower circle A1 and the protruding portion 35 of the connecting tool 31 When the protrusion 35 of the connector 31 is inserted, the protrusion 35 is located on the substantially same center line as the shaft center, and the protrusion 35 is located below the attachment hole 16 as shown in FIGS. It can be located in the portion of the side circle A1.

  11 to 14, a circle A3 is formed with a step 18 at this portion, the center O1 being the center of the circle, that is, coaxial with the lower circle A1 and having a small outer diameter. It has a diameter slightly larger than that of the flange portion 37. The attachment wall 15 has an annular inner attachment wall 15a having a thickness t1 and an outer diameter equal to the diameter of the circle A3, and an annular outer attachment wall having a thickness t2 and an inner diameter equal to the diameter of the circle A3. 15b, the flange 37 of the connector 31 having a small outer diameter abuts the surface of the inner attachment wall 15a, and the flange of the connector 31 having a large outer diameter contacts the outer attachment wall 15b. The part 37 abuts on the surface. The inside of the step portion 18 formed between the inner attachment wall 15a and the outer attachment wall 15b is a flange receiving recess in which a part of the flange 37 is received with the inner attachment wall 15a as a bottom surface. 19, the flange portion 37 of the coupling tool 31 accommodated in the flange portion accommodating recess 19 is prevented from moving in a direction parallel to the wall surface of the attachment wall 15 by the step portion 18, The center of the portion 37 is held at a fixed position that is substantially on the same center line as the center O1 of the lower circle A1 in the attachment hole 16.

  Further, as shown in FIGS. 12 and 14, an approximately fan-shaped projecting member projecting toward the protective tube connecting portion 34 side of the connector 31 at a thickness t3 is provided on the upper portion of the attachment wall 15 of the cover body 11. The joint part 20 is provided integrally. A circular arc portion on the lower side of the substantially fan-shaped projecting engagement portion 20 is formed to have substantially the same shape as the outer shape of the flange portion 37 of the connector 31 having a large outer diameter shown in FIG. The attachment hole 16 is formed so as to be on the same center line as the center O1 of the lower circle A1. Thereby, when the connecting tool 31 having a large outer diameter is attached to the attaching portion 14 of the cover body 11, the outer edge of the flange portion 37 of the connecting tool 31 is connected to the protruding engaging portion 20 of the cover body 11. Abutting on the lower arc portion, the upward movement of the flange portion 37 is prevented, and the center of the flange portion 37 is on the same center line as the center O1 of the lower circle A1 in the attachment hole 16. Held in place. That is, in both the small outer diameter connector 31 and the large outer diameter connector 31, the center line of the flange portion 37 substantially coincides with the center line of the lower circle A 1 in the attachment hole 16 of the cover body 11. It is held at the position to do. In addition, the step part 18 and the protrusion engaging part 20 of the said attachment wall 15 are equivalent to the engaging part of a claim.

   Next, installation of the wiring / piping material cover device according to the present embodiment configured as described above will be described.

  In order to embed the cover device 1 in concrete so that wiring and piping materials such as cables can be drawn into a double ceiling or the like, first, the cable protection tube 41 is installed in the protection tube connection portion 34 of the connector body 32 of the connector 31. The engaging claw 34b of the elastic piece 34a of the protective tube connecting portion 34 is inserted into the convex portion of the concave and convex surface of the cable protective tube 41 and connected. Next, the protruding portion 35 of the connector main body 32 of the connector 31 is inserted into the attachment hole 16 of the attachment portion 14 of the cover body 11 and protruded into the internal space 23. At this time, in the case of the connector 31 having a small outer diameter shown in FIG. 1, as shown in FIGS. 11 and 12, the collar portion 37 of the connector 31 is accommodated in the collar portion recess 19 and the outer periphery thereof. The portion engages with the step portion 18 of the attachment portion 14 of the cover body 11. The engagement between the flange portion 37 and the stepped portion 18 prevents the upper edge portion of the protruding portion 35 of the connector 31 from being positioned in the upper interference prevention space 17 in the attachment hole 16, as shown in FIG. It is held at a position substantially the same as the lower circle A1 shown, that is, a position in contact with the lower edge of the attachment hole 16.

  On the other hand, in the case of the coupling tool 31 having a large outer diameter shown in FIG. 2, as shown in FIGS. 13 and 14, the outer periphery of the flange portion 37 of the coupling tool 31 is a protruding engagement portion of the cover body 11. It engages with the end surface of the lower arc of 20 and abuts against the surface of the mounting wall 15. That is, the outer diameter of the flange portion 37 of the connector 31 is substantially the same as the circle A4 that forms the lower arc of the protruding engagement portion 20 shown in FIGS. As a result, the flange portion 37 of the connector 31 is prevented from moving upward by the protruding engagement portion 20, and the upper edge portion of the protrusion 35 of the connector 31 is located above the attachment hole 16 in the interference prevention space. 17, and is held at a position substantially the same as the lower circle A <b> 1 shown in FIG. 13, that is, a position in contact with the lower edge of the attachment hole 16.

  That is, regardless of whether the outer diameter of the connector 31 is large or small, the protrusion 35 is in a position where it abuts against the lower edge of the attachment hole 16 of the cover body 11, and the upper interference prevention space. It does not move to the 17th side.

  In this way, when the protruding portion 35 of the connector 31 is inserted into the attachment hole 16 of the cover body 11 and protrudes into the internal space 23, the nut 33 is inserted in the internal space 23 of the cover body 11. The threaded portion 36 of the protruding portion 35 of 31 is screwed. Thereby, the attachment wall 15 of the cover body 11 is clamped by the flange portion 37 of the connector 31 and the nut 33, and the connection state shown in FIG. 1 or FIG. 2 is obtained. The cable protection tube 41 may be connected to the protective tube connecting portion 34 of the connector 31 after connecting the connector 31 to the attachment portion 14 of the cover body 11 first.

  When the cable protection tube 41 is connected to the cover body 11 via the connector 31, the formwork is brought into contact with the formwork contact portion 21 around the opening surface 12 of the cover body 11 from below, and the cover body 11 is inclined. A fixing tool such as a nail is inserted into the mounting hole 22a of the fixing flange 22 provided on both sides of the side wall 13, and is fixed to the mold by hitting it. Next, the concrete is cast, and the mold is removed after curing. Note that a fixing tool such as a nail projecting outward from the concrete surface is cut, or a part of the fixing flange 22 of the cover body 11 is broken through and pulled out and removed. Thereby, embedding of the cover apparatus 1 in the concrete body 42 is completed. Here, since the flange portion 37 of the connector 31 abuts against the attachment wall 15 of the attachment portion 14 of the cover body 11 and closes the interference prevention space 17, the concrete trowel covers the concrete when placing the concrete. There is no intrusion into the internal space 23 of the body 11.

  Next, the removal of the cover body from the wiring / piping material cover device embedded in the concrete body will be described.

  After the cover device 1 is embedded, the cover body 11 is reused, or concrete is backfilled in the internal space 23 to compensate for the strength reduction of the concrete body 42 due to the internal space 23 formed by the cover body 11. When the cover body 11 is removed, first, the nut 33 of the connector 31 is removed in the internal space 23 of the cover body 11 that is exposed to the outside from the concrete surface after the formwork is removed. Next, as shown in FIG. 16, the cover body 11 is rotated downward about its one end 24 as an axis. At this time, the protruding portion 35 of the connector 31 protrudes into the internal space 23 of the cover body 11, but the interference prevention space 17 is provided above the attachment hole 16 of the cover body 11. Therefore, it is avoided that the front end corner 35a of the protrusion 35 of the connector 31 interferes with the upper edge of the attachment hole 16 of the cover body 11. Thereby, as shown in FIG. 17, the said cover body 11 can be rotated smoothly and can be pulled out below. Note that, regardless of whether the outer diameter of the coupling tool 31 is large or small, the axial center of the protruding portion 35 of the coupling tool 31 in the attachment hole 16 of the cover body 11 is the same and located at the same position. Since the protrusions 35 of the connector 31 related to the rotation of the body 11 are in the same state, the cover body 11 can be removed by the same operation. Thereby, it is prevented that the screw thread of the thread part 36 of the protrusion part 35 of the connector 31 is crushed and damaged by the rotation of the cover body 11.

  By the way, in the said embodiment, as shown in FIG. 18, the interference prevention space 17 of the attachment hole 16 of the cover body 11 forms the thin part 17a which made the part thin, and obstruct | occludes a part of space. When the cover body 11 is removed during rotation, the tip corner portion 35a of the projection portion 35 of the connector 31 comes into contact with the thin-walled portion 17a and is broken by the projection portion 35 to form the entire space. It can also be. According to the cover body 11 of this embodiment, the protruding length of the protruding portion 35 of the coupling tool 31 is large, and the opening area of the interference prevention space 17 needs to be increased. Even if only the contact does not cover the entire gap in the attachment hole 16, even if the toro enters into the internal space 23 of the cover body 11 from the gap when the concrete is placed, this is prevented. It becomes possible. The thin-walled portion 17a formed in the interference prevention space 17 needs to be able to withstand the concrete placing pressure and be easily torn off by the protruding portion 35 of the connector 31. In addition, when the interference prevention space 17 is formed with a thin wall, a gap is generated in the interference prevention space 17 due to tearing, and when the diameter of the flange portion 37 of the connector 31 is small, the interference prevention space 17 is formed. Although it is possible that the entire gap in 17 cannot be covered and the removed cover body 11 cannot be reused, it is beneficial at least when it is refilled to reinforce the strength of the concrete body 42.

In addition, although not shown, a hinge may be formed at the upper end of the interference prevention space 17 of the cover body 11 and a lid that cuts and opens the periphery of the interference prevention space 17 may be integrally provided. The lid provided in the interference prevention space 17 can be rotated only to the outside of the cover body 11 with the hinge as a fulcrum. In this case, the lid provided in the interference prevention space 17 is turned to the inner space 23 side of the cover body 11 with the protruding portion 35 of the connector 31 inserted into the attachment hole 16 of the cover body 11. Since it does not move, it is possible to prevent the toro from entering through the gap of the interference prevention space 17 when placing concrete, and when the cover body 11 is removed, the lid opens to the outside with the hinge at the upper end as a fulcrum. It is possible to prevent the tip corner portion 35a of the protruding portion 35 of 31 from interfering with the upper edge portion of the attachment hole 16 of the cover body 11 and damaging the screw thread.
Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIGS.

  In the first embodiment, the cover body 11 is provided with the interference preventing portion 17 that prevents interference with the connector 31 at the time of removal. However, in the second embodiment, on the connector 31 side. The thing provided with the interference prevention part with the cover body 11 is shown.

  19 and 20, the attachment hole 16 of the cover body 11 is formed in a perfect circle, and the inner diameter thereof is slightly larger than the outer diameter of the protruding portion 35 of the connector main body 32 of the connector 31. . On the other hand, the protrusion 35 of the connector main body 32 of the connector 31 is notched with an inclined surface inclined from the flange 37 to the tip corner 35a of the protrusion 35, and this inclined surface is an interference prevention notch. 38. The inclined surface which is the interference prevention notch 38 is a distance R4 from one end 24 of the cover body 11 to the farthest end of the connection surface between the projection 35 and the flange 37 of the connector main body 32, and one end of the cover body 11. The distance R5 from 24 to the tip corner 35a of the protrusion 35 of the connector main body 32 is formed at an approximately equal inclination angle, and the inclined surface may be a plane, and the distance R4 and the distance R5 are It may be a curved surface drawn around the one end 24 as a radius. The distance R4 and the distance R5 are formed slightly smaller than the distance R6 from one end 24 of the cover body 11 to the farthest end in the attachment hole 16 of the cover body 11.

  Since the cover body 11 and the connector 31 in this second embodiment are formed in this way, when the cover body 11 is removed by rotating around one end 24 of the cover body 11, The interference preventing cutout 38 in the protrusion 35 of the connector main body 32 does not interfere with the tip corner 35 a of the protrusion 35 and the upper edge of the attachment hole 16 of the cover body 11. For this reason, similarly to the first embodiment, the cover body 11 can be smoothly removed from the concrete body 42 without damaging the protruding portion 35 of the connector main body 32 and the attachment portion 14 of the cover body 11.

  In the second embodiment, it is necessary to place the interference prevention cutout portion 38 of the connector main body 32 in the upper portion and attach it to the attachment hole 16 of the cover body 11. Therefore, although not shown, for example, an engagement protrusion projecting outward, that is, toward the connector body 32 is provided at a predetermined position of the attachment wall 15 in which the attachment hole 16 of the cover body 11 is provided. When an engagement recess for engaging with the engagement protrusion is provided at a position corresponding to the engagement protrusion of the connector main body 32 in the flange portion 37 of the main body 32, an interference prevention notch of the connector main body 32 is provided. 38 can always be positioned above the attachment hole 16 and attached to the cover body 11.

It is sectional drawing which shows the cover apparatus of the wiring and piping material to which the coupler with a small outer diameter of a collar part was connected in 1st Embodiment of this invention. It is sectional drawing which shows the cover apparatus of the wiring and piping material to which the coupling tool with the large outer diameter of the collar part was connected in 1st Embodiment of this invention. It is a perspective view of the cover body of FIG. It is a front view of the cover body of FIG. It is a top view of the cover body of FIG. It is a side view of the cover body of FIG. It is the arrow view which looked at the cover body of FIG. 4 from A direction. It is sectional drawing of the cover body of FIG. It is a perspective view of the coupling tool of FIG. It is sectional drawing of the coupling tool of FIG. It is an arrow line view which shows the state from which the coupling tool with a small outer diameter of the collar part of FIG. 1 is connected from the (a) direction of FIG. It is a principal part enlarged view which shows the state to which the coupling tool with a small outer diameter of the collar part of FIG. 1 was connected. It is an arrow line view which shows the state from which the coupling tool with the large outer diameter of the collar part of FIG. 1 is connected from the (a) direction of FIG. It is a principal part enlarged view which shows the state to which the coupling tool with the large outer diameter of the collar part of FIG. 1 was connected. It is explanatory drawing which shows another attachment hole of FIG. It is sectional drawing which shows the state which removes the cover body of FIG. 1 from a concrete body. Similarly, it is sectional drawing which shows the state which removes the cover body of FIG. 1 from a concrete body. FIG. 5 is an arrow view showing the cover body having another interference prevention space of FIG. 1 from the direction of FIG. It is a perspective view of the coupling tool in 2nd Embodiment of this invention. It is sectional drawing which shows the state which removes the cover body 11 in 2nd Embodiment of this invention from a concrete body. It is sectional drawing which shows the conventional cover apparatus of wiring and piping material. It is sectional drawing which shows another conventional wiring and piping material cover apparatus. It is sectional drawing which shows the state which removes the cover body of FIG. 22 from a concrete body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover apparatus 11 Cover body 14 Attachment part 15 Attachment wall 16 Attachment hole 17 Interference prevention space 24 One end 31 Connector 35 Protrusion part 38 Interference prevention notch part 41 Cable protection pipe 42 Concrete body

Claims (12)

A cover body of wiring / piping material embedded in a concrete body and connected to a protective pipe for wiring / piping material via a connector,
An attachment portion for attaching the connector so that a part thereof protrudes into the cover body;
After embedding concrete, the attachment part and the connecting tool interfere with the attachment part during the rotation so that the cover body can be removed from the concrete body by rotating about one end of the cover body. An interference prevention unit is provided to prevent
The attachment portion is formed by a connection hole through which a protruding portion that is a part of the coupling tool is inserted so as to protrude into the cover body, and the interference preventing portion is inserted through the connection hole. A cover body, which is an interference prevention space formed at a position above the portion . The said interference prevention space is obstruct | occluded by this connection tool in the state in which the connection tool was attached, The cover body of the wiring and piping material of Claim 1 characterized by the above-mentioned. The wiring / pipe material according to claim 1 or 2 , wherein an engagement portion is formed to engage the coupling tool in a state in which the coupling tool is attached to hold the coupling tool at a fixed position. Cover body. The wiring / piping material cover body according to claim 3 , wherein the engaging portion prevents the connecting tool from moving toward the interference prevention space in a state in which the connecting tool is attached. The wiring / pipe material cover body according to any one of claims 1 to 4 , wherein a central axis of the connection hole of the attachment portion and a central axis of the coupling tool are spaced apart from each other. 6. The connector according to any one of claims 1 to 5 , wherein a hook portion is provided, and the engaging portion is formed so as to be engageable with a plurality of connectors having different sizes of the hook portion. The cover body of the wiring / piping material according to item 1. A connector that is embedded in a concrete body and connects a protective pipe for wiring / piping material and a cover body for wiring / piping material,
The cover body has a mounting portion that is attached so that a protruding portion that is a part of the connector protrudes into the cover body;
After the concrete is buried, the attachment part and the connecting tool interfere with the connecting tool during the turning so that the cover body can be removed from the concrete body by rotating one end of the cover body. An interference prevention unit is provided to prevent
The connection member for wiring / piping material, wherein the interference prevention portion is an interference prevention cutout portion that is obliquely cut from a base end portion to a tip end corner portion of the protruding portion . The connector has a connector main body in which a protective pipe for wiring / piping material is connected to one end side, and a protruding portion to the inside of the cover body is formed on the other end side, and is screwed to the protruding portion of the connector main body. The wiring / piping material connector according to claim 7, further comprising a nut to be provided. A wiring / piping material coupling device comprising: a cover body embedded in a concrete body to which a wiring / piping material protection pipe is connected; and a connecting tool for connecting the wiring / piping material protection pipe to the cover body. There,
The said cover body is a thing of any one of Claim 1 to 6 , The connection apparatus for wiring and piping materials characterized by the above-mentioned. A connection device for wiring / piping comprising a cover body embedded in a concrete body and connected to a protective pipe for wiring / piping material and a connector for connecting the protective pipe for wiring / piping material to the cover body. And
9. The connection device for wiring and piping according to claim 7 or 8 , wherein the connection device is attached to the cover body so that the interference prevention cutout portion is on the upper side . Either one of the cover body or the coupling tool is provided with an engaging protrusion so as to be in the upper position when the interference prevention notch is attached, and the other is provided with an engaging recess for engaging with the engaging protrusion. The connection device for wiring and piping according to claim 10 . The connection device for wiring / piping material according to claim 9, wherein the connection device according to claim 7 or 8 is attached so that the interference prevention cutout portion is on the upper side. Equipment .

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