JP4520438B2 - Wiring box - Google Patents

Description

  The present invention relates to a wiring box that is supported and fixed to, for example, a reinforcing bar that forms a support of a concrete wall in a building.

  Conventionally, for example, a wiring box is embedded in a concrete wall in order to attach a wiring device such as an outlet to a concrete wall surface in a building. This wiring box is positioned by being supported by a bar material on a reinforcing bar constructed for forming a concrete wall before placing the concrete. As a wiring box used as described above, for example, a configuration disclosed in Patent Document 1 is known.

  The wiring box includes a box body formed in a square box shape with a bottom having an opening on the front surface by a bottom wall having a square plate shape and a side wall standing on a side edge of the bottom wall. Protrusions having a substantially rectangular parallelepiped shape project from the opposing positions on both sides of the outer surfaces of the opposing left and right side walls of the box body. In the projecting portions facing each other on the same side wall, insertion holes through which a bar material made of a metal bar can be inserted are formed through the projecting portions. In addition, a groove portion is formed on the outer end surface of each projecting portion so as to communicate with the insertion hole and open across two adjacent surfaces of the projecting portion. The bar material has a circular cross section, can be freely bent and deformed in the three-dimensional direction by hand, and has a required tensile strength.

Now, in order to support the wiring box on the reinforcing bars using a pair of bar materials, first, each bar material is inserted into the insertion holes of the projecting portions facing each other, and further, both end sides of each bar material are connected. Bend outward along the groove. Then, after attaching the pair of bar members to the wiring box, the both ends of the bar members are bent to the reinforcing bar side and fixed to the reinforcing bar, thereby positioning the wiring box at a desired position with respect to the reinforcing bar. Can be supported.
Japanese Patent No. 2829358

  However, in the conventional wiring box described above, the protruding portion in which the insertion hole is formed protrudes outward from the outer surface on both ends of the side wall. Therefore, the bar member that is inserted into the protruding portion and attached to the wiring box is attached along the outer surface of the side wall of the box body, and the portion other than the portion penetrating the protruding portion is exposed to the outside of the box body. Therefore, when concrete is placed, there is a problem that the concrete placement pressure directly acts on the side wall and the side wall may be deformed.

  In addition, when storing and transporting multiple wiring boxes, the protruding part becomes an obstacle between adjacent box bodies, so that the box bodies cannot be brought into close contact with each other. There was a problem that it had to be taken widely and was very inconvenient.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the invention is to provide a wiring box that can reinforce the side wall of the box body with a bar material and prevent the box body from being deformed by an external force. Another object of the present invention is to provide a wiring box capable of bringing a plurality of box bodies into close contact with each other during storage and transportation, and capable of storage and transportation in a narrow space.

In order to solve the above problems, the invention described in claim 1 includes a bar material insertion portion through which the bar material is inserted, and the both ends of the bar material inserted through the bar material insertion portion are arranged in the building. a wiring box which is supported in the construct by fixing the construct, comprising a box body which forms a bottom rectangular box shape having an opening, said bar member insertion portion of the side wall which faces in the box body The bottom wall side is integrally formed so as to swell only in the box body, and the bar material insertion portion is formed with an insertion hole penetrating the inside of the side wall, and the side wall is formed by the bar material inserted into the insertion hole. Both ends of the insertion hole are formed so as to reinforce, and when bending both ends of the bar material inserted into the insertion hole, the bent portion of the bar material does not protrude outward from the box body. The corner of the box body A holding groove connected to two adjacent side walls to be formed is recessed, and the bent portion of the bar material can be held in the holding groove by bending both ends of the bar material inserted into the insertion hole in the holding groove. The summary is as follows.

  According to the present invention, the side wall of the box body can be reinforced by the bar material to prevent the box body from being deformed by an external force. Further, a plurality of box bodies can be brought into close contact with each other during storage and transportation, and storage and transportation can be performed in a narrow space.

  Moreover, rotation of the bar material in the circumferential direction in the insertion hole can be prevented. Accordingly, the box body can be prevented from being tilted or displaced due to the rotation of the bar material, and the box body can be fixed at a desired position of the structure in the building, and the wiring apparatus attached to the box body can be fixed in the building. Can be attached to a desired position.

Hereinafter, an embodiment of a wiring box embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wiring box 11 includes a bar material insertion portion 13 into which the bar material 12 can be inserted, and both ends of the bar material 12 inserted into the bar material insertion portion 13 are structures in the building. It is supported by the said reinforcing bar 14 by fixing to the reinforcing bar 14 which forms the support frame of the concrete wall. The bar member 12 extends in a circular cross section and is formed to be bendable in a three-dimensional direction by hand, and has a required tensile strength.

The wiring box 11 will be specifically described. Note that the top and bottom and the left and right of the wiring box 11 of this embodiment correspond to the top and bottom and the left and right of the wiring box 11 in FIG.
As shown in FIGS. 1 and 2, the wiring box 11 made of a synthetic resin material has an opening from a front square bottom wall 15 and a flat side wall 16 standing on the periphery of the bottom wall 15. A box main body 17 formed in a bottomed square box shape is provided. As shown in FIG. 2, attachment holes 18 for attaching a wiring device, a wiring device holding frame, or a box cover (none of which are shown) are provided in the side walls 16 facing the top and bottom of the box body 17. . In addition, as shown in FIGS. 1, 3, and 4, two knocks 19 are formed in each side wall 16 so that wirings and piping can be inserted.

  As shown in FIG. 2, on the side of the bottom wall 15 of the left and right side walls 16 facing each other of the box body 17, bar material insertion portions 13 extending in the length direction of the left and right side walls 16 are provided. Are integrally formed. As shown by a broken line in FIG. 2, the bar member insertion portion 13 is formed with an insertion hole 20 extending along the length direction of the left and right side walls 16. Then, as indicated by broken lines in FIG. 5, the bar material 12 is inserted into each insertion hole 20, thereby allowing the bar material 12 to pass through the left and right side walls 16 integrally formed with the bar material insertion portion 13. be able to.

  As shown in the broken line in FIG. 2 and FIGS. 3 and 4, the four corner portions of the box body 17 have adjacent side walls 16 (the left side wall 16, the upper side wall 16, and the left side wall 16 that form the respective corner portions). A holding groove 21 connected to the lower wall 16, the right side wall 16 and the upper side wall 16, and the right side wall 16 and the lower side wall 16) is formed. As shown in FIG. 4, each holding groove 21 is formed on both end sides of the insertion hole 20 and is recessed so as to extend from the upper and lower side walls 16 positioned on the extension line of the insertion hole 20 to the adjacent left and right side walls 16. ing. Further, the width of each holding groove 21 is formed slightly longer than the diameter of the bar member 12, and as shown by the two-dot chain line in FIG. The bar material 12 can be inserted into the inside. By attaching the bar material 12 to the wiring box 11, a wiring box device as a wiring device composed of the wiring box 11 and the bar material 12 is formed.

  As shown in FIG. 6, both ends of the bar member 12 attached to the wiring box 11 are bound and fixed to the reinforcing bars 14 installed in the building by the bind wires 25 or the like. Then, by fixing the bar material 12 to the reinforcing bar 14, the wiring box 11 is supported with respect to the reinforcing bar 14 and is positioned and fixed to the reinforcing bar 14.

Next, a method of using the wiring box 11 having the above-described configuration will be described together with an operation.
First, in a situation where a plurality of wiring boxes 11 are stored or transported, the outer surface of the bottom wall 15 and each side wall 16 of the wiring box 11 is formed in a planar shape, so that adjacent box bodies 17 are adjacent to each other. Closely possible. Therefore, space saving of the storage space or transport space of the wiring box 11 is achieved.

  Now, as shown by a two-dot chain line in FIG. 5, the pair of bar members 12 are caused to pass through the insertion hole 20 from one holding groove 21 and protrude from the other holding groove 21. Then, the bar material 12 is inserted into each bar material insertion portion 13, and the bar material 12 penetrates the left and right side walls 16 of the box body 17.

  Next, as shown by a solid line in FIG. 5, the bar material 12 in the insertion hole 20 has the same protruding length from the upper and lower side walls 16 on both ends of the bar material 12 inserted into the insertion hole 20. Adjust the position. Next, the both ends of each bar member 12 are bent with the positions where they are in contact with the inner periphery of the opening of the insertion hole 20 as fulcrums. At this time, both end sides of each bar member 12 can be bent along the opposing inner surfaces that form the opening of the holding groove 21, and the end portions of each bar member 12 are positioned on the axis of the bar member 12. Can be folded. Then, both end sides of each bar member 12 are bent outward from the wiring box 11.

  When the outer end side surface of each bent bar member 12 comes into contact with the inner surface of the holding groove 21, the bar member 12 is bent at about 90 degrees with respect to the axial direction of the bar member 12. As shown in FIGS. 1 and 5, when the bar member 12 is bent in the holding groove 21, the opposing outer surfaces of the bent portions of the bar member 12 come into contact with the opposing inner surfaces of the holding groove 21.

  Therefore, the bent portion of the bar material 12 is held in the holding groove 21, and the rotation of the bar material 12 in the circumferential direction in the insertion hole 20 can be prevented. Further, since both end sides of the bar member 12 are bent, the bar member 12 is prevented from being pulled out of the insertion hole 20 by contacting the bent portion or the inner surface of the holding groove 21.

  As a result, the pair of bar members 12 are attached to the wiring box 11 in a state where the pair of bar members 12 are respectively inserted through the bar member insertion portions 13 to form a wiring box device. When the bar member 12 is attached to the wiring box 11, each bar member 12 penetrates the left and right side walls 16 along the length direction of the left and right side walls 16. 16 is reinforced. The central portion of each bar member 12 is protected by the left and right side walls 16.

  Subsequently, as shown in FIG. 6, both end portions of each bar member 12 are bent in the direction of the reinforcing bar 14, and both end portions of each bar member 12 are bound by the bind wire 25 along the reinforcing bar 14. At this time, since both ends of each bar member 12 are bent, the bar member 12 does not fall out of the wiring box 11 and the work of attaching the bar member 12 to the reinforcing bar 14 is performed quickly. As a result, the wiring box 11 is supported by the reinforcing bar 14, and the wiring box device is supported by the reinforcing bar 14.

  Now, in a state where the wiring box 11 is supported by the reinforcing bar 14, a pair of molds 23 are erected so as to sandwich the wiring box 11, and one mold frame 23 is brought into contact with the opening side end surface of the wiring box 11. Make contact. Further, when the wiring box 11 is pressed in the direction of the reinforcing bar 14 by the mold 23, each bar member 12 is bent and deformed by applying a force in a direction in which the distance to the reinforcing bar 14 is shortened, and the wiring box 11 is in the direction of the reinforcing bar 14. And the wiring box 11 is pressed toward the mold 23 by the elastic force of the bar member 12. As a result, the opening side end face of the wiring box 11 is brought into close contact with the mold 23.

  At this time, even if a force that rotates each bar member 12 in the circumferential direction by the pressing acts, the bent portion of each bar member 12 is held in the holding groove 21. The rotation in the circumferential direction in the insertion part 13 is prevented. Therefore, the close contact state of the wiring box 11 to the mold 23 is maintained.

  Subsequently, concrete (not shown) is placed between the pair of molds 23. At this time, since the left and right side walls 16 are reinforced by the bar material 12, the left and right side portions of the bottom wall 15 of the box body 17 and the left and right side walls 16 are prevented from being deformed by the concrete placing pressure as an external force. .

  Moreover, even if the force which rotates each bar material 12 to the circumferential direction acts by concrete placement pressure, the bar material 12 rotates to the circumferential direction by contact | abutting to the holding groove 21 inner surface of the bending location outer surface of each bar material 12. Is prevented. In addition, even if a force for moving the bar material 12 downward by the driving pressure is applied, the bar material 12 is pulled out of the bar material insertion portion 13 by the engagement of the bar material 12 with the inner surface of the holding groove 21. Is prevented. As a result, the close contact state of the wiring box 11 to the formwork 23 is maintained, and displacement and inclination of the wiring box 11 due to the rotation and movement of the bar material 12 are prevented.

  After the concrete is hardened, a concrete wall (not shown) is constructed by removing the mold 23, and the wiring box 11 is disposed on the concrete wall. Thereafter, a wiring device (not shown) is attached to the wiring box 11. Since the wiring box 11 is disposed at a desired position on the concrete wall, the wiring device attached to the wiring box 11 is installed at a desired position on the concrete wall.

According to the wiring box 11 of the above embodiment, the following features can be obtained.
(1) Since the bar material 12 penetrates the bottom wall 15 side of each of the left and right side walls 16 of the wiring box 11 by inserting the bar material 12 through the insertion hole 20 of each bar material insertion portion 13, the bars The left and right side walls 16 can be reinforced by the material 12. Therefore, unlike the conventional case where the bar material 12 is disposed outside the side wall 16 of the wiring box 11, the deformation of the side wall 16 due to the concrete placing pressure can be prevented.

  (2) Since the deformation of the wiring box 11 due to the concrete placing pressure can be prevented, it becomes impossible to attach the wiring device to the wiring box 11 or the wiring device attached to the wiring box 11 Problems such as tilting and rattling can be prevented.

  (3) By bending the bar material 12 in the holding groove 21, the bar material 12 can be attached to the wiring box 11 so as to straddle between adjacent side walls 16 forming each corner portion of the box body 17. Therefore, the corner portion of the wiring box 11 can be reinforced by the bar material 12, and the corner portion can be prevented from being deformed by the concrete placing pressure.

  (4) Since the outer surface of the bottom wall 15 and the side wall 16 of the wiring box 11 is formed in a flat shape, when the plurality of wiring boxes 11 are stored or transported, the adjacent box bodies 17 can be brought into close contact with each other. it can. Therefore, unlike the conventional case in which the protruding portion is provided on the outer surface of the wiring box 11, it is possible to save the space for storing or transporting the wiring box 11.

(5) Further, unlike the conventional case where the protruding portion is provided on the outer surface of the wiring box 11, the material of the wiring box 11 can be saved.
(6) Since the insertion hole 20 is formed through the entire length direction of the left and right side walls 16, the bar material 12 is guided by the insertion hole 20 and inserted into the bar material insertion portion 13. Therefore, unlike the conventional case where the bar material 12 is inserted into the opposite position of the projecting portion protruding from the opposite position on the outer surface of the wiring box 11, the bar material 12 is inserted into the bar material insertion portion 13. Thus, the work of attaching to the wiring box 11 can be easily performed.

  (7) Since the entire central portion of the bar material 12 penetrates the left and right side walls 16, the central portion of the bar material 12 is protected by the side walls 16. Therefore, unlike the conventional case where only both end portions of the bar material 12 are protected by the protruding portions, the concrete placing pressure does not directly act on the central portion of the bar material 12 and the central portion of the bar material 12 is deformed. Can be prevented. Accordingly, it is possible to prevent the displacement of the protruding lengths at both ends of the bar member 12 due to the deformation of the central portion of the bar member 12 and the like, thereby preventing the displacement and inclination of the wiring box 11.

  (8) Since the bent portion of the bar material 12 is held in the holding groove 21, rotation of the bar material 12 in the circumferential direction in the insertion hole 20 can be prevented. Therefore, the wiring box 11 can be embedded at a desired position on the concrete wall while preventing the inclination or displacement of the wiring box 11 due to the rotation of the bar member 12, and the wiring attached to the wiring box 11 can be attached. The instrument can be attached to the desired location on the concrete wall. Further, it is possible to prevent a gap from being formed between the opening side end face of the wiring box 11 and the mold 23, and to prevent a problem that concrete enters the wiring box 11 from the gap. Can do.

  (9) Further, the bar member 12 can be prevented from being pulled out from the insertion hole 20 by locking the bent portions on both ends of the bar member 12 to the outer surface of the holding groove 21. Therefore, it is possible to prevent the displacement and inclination of the wiring box 11 attached to the reinforcing bar 14, and the wiring device attached to the wiring box 11 can be arranged at a desired position on the concrete wall.

In addition, you may change the said embodiment as follows.
The holding groove 21 is omitted, the bar member 12 inserted through the bar member insertion portion 13 is bent along the outer surface of the side wall 16, and the bar member 12 is locked by locking the outer surface of the side wall 16 and the outer surface of the bent portion of the bar member 12. The removal from the bar material insertion portion 13 may be prevented.

  A holding groove 21 is formed so as to be connected to a corner portion of the box body 17 formed by the bottom wall 15 and the side wall 16 so that the bar material 12 inserted through the bar material insertion portion 13 can be bent toward the bottom wall 15 side. It may be formed. For example, the holding groove 21 may be formed so as to be connected from the upper and lower side walls 16 to the bottom wall 15.

  The holding groove 21 is omitted, and the side wall 16 is cut and raised on the outer surface of the side wall 16 to form a pair of projecting pieces. Then, after bending both ends of the bar member 12 inserted through the bar member insertion portion 13, the bent portion of the bar member 12 is inserted between a pair of protruding pieces, and the protruding pieces are caulked into the wiring box 11. You may attach the bar material 12 in the state which prevented rotation.

  Further, the holding groove 21 is omitted, and a concave portion in which the bar material 12 can be fitted is formed in the side wall 16. Then, after bending both ends of the bar member 12 inserted through the bar member insertion portion 13, the bent portion of the bar member 12 is fitted into the recess, and the bar member 12 is sandwiched between the head of the fixing screw and the side wall 16. In this manner, the fixing screw may be screwed into the side wall 16 to attach the bar member 12 in a state in which rotation is prevented.

  In the embodiment, the bar material 12 that can be bent by hand in the three-dimensional direction is used. However, the bar material 12 that cannot be bent may be used, and the bar material 12 may be fixed to the reinforcing bar 14 without being bent.

  In the embodiment, the wiring box 11 is fixed to the reinforcing bar 14 that forms the support of the concrete wall as the structure in the building. However, the wiring box 11 is connected to the reinforcing bar 14 that forms the support of the concrete pillar, the concrete floor, or the like as the structure. May be fixed. Further, the wiring box 11 may be attached by fixing the bar material 12 inserted into the wiring box 11 to a support bar as a structure erected between the C-shaped steel, the H-shaped steel, etc. erected in the building. Good. When configured in this way, even if an external force or the like acts on the wiring box 11, the deformation of the side walls 16 can be prevented by the bar material 12 inserted into the left and right side walls 16.

  In the embodiment, the bar material 12 is inserted into the left and right side walls 16 of one wiring box 11. However, the bar material 12 is inserted into the opposite side walls 16 of the two or more wiring boxes 11, and these bar materials are inserted. 12 may be fixed to the reinforcing bar 14 and two or more wiring boxes 11 may be supported by the two bar members 12. In such a configuration, the outer surface of the side wall 16 of the wiring box 11 is formed in a flat shape, so that the adjacent box bodies 17 can be brought into close contact with each other. Therefore, unlike the conventional case where the protruding portion is provided on the outer surface of the wiring box 11, the wiring device attached to the wiring box 11 can be installed close to the wiring box 11.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(1) A bar material and a bar material insertion part through which the bar material is inserted are supported by the structure by fixing both ends of the bar material inserted through the bar material insertion part to the structure in the building. The wiring box comprises a box body having a bottomed square box shape having an opening, and the bar is disposed on the bottom wall side of the opposing side walls of the box body. The material insertion part is integrally formed, the bar material insertion part is formed with an insertion hole penetrating the inside of the side wall, and the side wall is reinforced by the bar material inserted through the insertion hole. A characteristic wiring device. When comprised in this way, the deformation | transformation of the wiring box by external force can be prevented by reinforcing the side wall of the wiring box with a bar material. Therefore, it is possible to prevent problems such that it is impossible to attach the wiring device to the wiring box, and the wiring device attached to the wiring box is tilted or rattled.

  (2) A holding groove connected to two adjacent side walls forming the corner portion of the box main body is recessed in both end sides of the insertion hole, and both end sides of the bar member inserted into the insertion hole are placed in the holding groove. The wiring device according to the technical idea (1), wherein the bent portion of the bar material is formed so as to be held in the holding groove by bending. When comprised in this way, the rotation to the circumferential direction of the bar material in an insertion hole can be prevented. Therefore, the wiring box can be installed at a desired position of the structure.

  (3) A wiring box characterized in that the bar material can be prevented from being pulled out from the bar material insertion portion by locking the outer surface of the bent portion of the bar material and the inner surface of the holding groove. When comprised in this way, the position shift and inclination of the box main body attached to the structure in a building can be prevented, and a wiring apparatus can be arrange | positioned in the desired position in a building.

The perspective view which shows the installation state of the box for wiring of embodiment. The front view which shows the box for wiring of embodiment. The side view which shows the box for wiring of embodiment. The bottom view which shows the box for wiring of embodiment. The perspective view which shows the state which penetrated the bar material in the bar material insertion part. The sectional side view which shows the box for wiring installed between the formwork.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Wiring box, 12 ... Bar material, 13 ... Bar material insertion part, 14 ... Reinforcement as a structure in a building, 15 ... Bottom wall, 16 ... Side wall, 17 ... Box body, 20 ... Insertion hole, 21 ... Retention groove.

Claims (1)

A wiring box that is provided with a bar material insertion portion through which a bar material is inserted and is supported by the structure by fixing both ends of the bar material inserted through the bar material insertion portion to the structure in the building. ,
Comprising a box body which forms a bottom rectangular box shape having an opening, said bar member insertion portion with integrally formed so as to bulge only opposing the box body on the bottom wall of the side wall in the box body, Forming an insertion hole penetrating the inside of the side wall in the bar material insertion portion, and forming the side wall to be reinforced by a bar material inserted through the insertion hole;
When bending both end sides of the bar material inserted into the insertion hole, corner portions of the box body are provided at both end sides of the insertion hole so that the bent portion of the bar material does not protrude outward from the box body. A holding groove connected to two adjacent side walls to be formed is recessed, and the bent portion of the bar material can be held in the holding groove by bending both ends of the bar material inserted into the insertion hole in the holding groove. A wiring box characterized in that it is formed in.

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