JP5079426B2 - Wiring box and wiring box device - Google Patents

Description

According to the present invention, a connection port connected to an end portion of a protective cover for wiring in which a wiring material is housed is inserted in the side wall portion of the box body so as to open to the bottom wall portion side of the box body. The present invention relates to a wiring box device that is exposed in the table.

  Wiring boxes (hereinafter sometimes simply referred to as “boxes”) are roughly classified into those installed inside the wall and those installed outside the wall in an exposed state. Most of the boxes are the former ones, but if you want to add more outlets after the construction of the building, the boxes are installed outside the wall. Here, in order to increase the number of outlets after the construction of the building, the form of installing the box outside the wall includes the form of installing a box in the part that requires a new outlet (independent installation form) and the existing installation in the wall There is a form in which another box is placed on the box and placed outside the wall (stacked form). In the case of the latter “superposition installation form”, as shown in Patent Document 1, for example, a cable is drawn out from an existing box, and an outlet for expansion is provided from a box placed outside the wall. A cable is laid along the wall surface up to another box, and the cable along the wall surface is accommodated in a protective cover for wiring (hereinafter sometimes simply referred to as “protective cover”). In the former “independent installation mode”, the cable that is wired along the wall surface and drawn into the box is similarly housed in the protective cover.

In the box described in Patent Document 1, a connection port that opens to the bottom wall portion side is formed at the center portion along the circumferential direction of a specific side wall portion among the four side wall portions constituting the box body. It is the structure which inserts and connects the edge part of a protective cover. For this reason, when the existing box in the wall is installed at the corner of the wall or the like, as shown in FIG. 16, the box placed on the existing box overlaps the side wall surface of the wall or the like. Even if it can be installed in close contact with or close to the protective cover, the protective cover connected to the box superimposed on the existing box cannot be installed in close contact with or close to the side wall surface such as the wall. As a result, a predetermined gap 81 is generated between the side wall surface such as the wall and the protective cover, and this gap 81 impairs the beauty of the wall.
JP 2004-201469 A

The present invention is a state where the end of the protective cover in which the wiring material is housed is inserted into the connection port of the box main body when the box for expanding the outlet is installed on the wall surface at the wall or the like. Thus, it is an object to prevent at least the end surface of the lid constituting the protective cover from entering the box body .

The invention according to claim 1 for solving the above-mentioned problem is that the connection port to which the end of the protective cover for wiring for housing the wiring material is inserted and connected to the side wall of the box main body is connected to the bottom wall of the box main body. A wiring box that is open on the wall side and is exposed on the wall surface; a lid is covered by the base; wiring material is accommodated therein; and an end portion is provided at the connection port of the wiring box. A wiring box device comprising a wiring protective cover to be inserted, wherein the connection port of the wiring box includes a corner portion that is a boundary between two adjacent side wall portions of the box body, A width that is formed continuously between two adjacent side wall portions and is a length along the circumferential direction of the box body of the box body as viewed from the insertion direction of the wiring protection cover is the wiring protection Corresponding to the width of the cover, the connection port Form a part of the periphery, the end surface of the side wall portion is viewed from the insertion direction of the protective cover for the wiring, the end surface of at least the lid constitutes a protective cover for the wiring has become a contact with the abutment end face In the state where the end portion of the wiring protective cover is inserted into the connection port of the wiring box, at least the end surface of the lid body constituting the wiring protective cover is in contact with the contact end surface, It is characterized in that it does not enter the inside of the wiring box beyond the contact end face .

In the first aspect of the present invention, the connection port into which the end portion of the protective cover is inserted and connected includes a corner portion that is a boundary between two adjacent side wall portions of the box body, and the two adjacent side wall portions. When the box is installed on one wall surface that forms the corner of the building wall or the like, a protective cover is formed on the connection port formed on the side wall of the box body. Is inserted into the other wall surface (side wall surface) in a state where there is almost no gap between the protective cover and the other wall surface (side wall surface) that forms the corner. ) Etc. can be installed. In this way, the protective cover can be installed with almost no gap between the other wall surface (side wall surface) and the like forming the entrance corner, so that the appearance of the protective cover is improved. Further, since the width of the connection port corresponds to the width of the wiring protective cover, when the end of the wiring protective cover is inserted into the connection port of the box body, at least the wiring protective cover is formed. The end surface on the insertion side of the lid abuts the contact end surface of the connection port of the box body, and the insertion length of the end portion of the protective cover for wiring with respect to the box body is determined, and the insertion state of the end portion is stable. To do.

In the present invention, the connection port to which the end portion of the protective cover is inserted and connected includes a corner portion that is a boundary between two adjacent side wall portions of the box body, and extends over the two adjacent side wall portions. Since it is formed continuously, when installing the box on one wall surface forming the corner of the building wall, etc., the end of the protective cover at the connection port formed on the side wall of the box body Is inserted into the other wall surface (side wall surface) or the like in a state where there is almost no gap between the protective cover and the other wall surface (side wall surface) or the like forming the corner. Can be installed along. In this way, the protective cover can be installed with almost no gap between the other wall surface (side wall surface) and the like forming the entrance corner, so that the appearance of the protective cover is improved. Further, since the width of the connection port corresponds to the width of the wiring protective cover, when the end of the wiring protective cover is inserted into the connection port of the box body, at least the wiring protective cover is formed. The end surface on the insertion side of the lid abuts the contact end surface of the connection port of the box body, and the insertion length of the end portion of the protective cover for wiring with respect to the box body is determined, and the insertion state of the end portion is stable. To do.

  Hereinafter, the present invention will be described in more detail with reference to a plurality of embodiments.

FIG. 1 is an exploded perspective view of a box B _{1 according} to the present invention, a wiring device mounting frame F to which a wiring device A is mounted, a decorative plate mounting frame E, and a decorative plate D. FIG. is an exploded perspective view of the frame mounting member G which is attached to the box body 10, FIG. 3 is a perspective view of the box B ₁ from the back side, FIG. 4 (a), (b) are respectively views 3 FIG. 5 is an enlarged cross-sectional view taken along lines X ₁ -X ₁ and X ₂ -X ₂ , and FIGS. 5 (a) and 5 (b) show the situation in which the closing plate portion 34 of the box body 10 is cut in two steps. is a perspective view showing, Fig. 6, the present invention superimposed on the wall W _1, W existing box B _0, which is embedded in the wall W ₁ close to wall W ₂ at internal corner portions of ₂ according a sectional view showing a state of attaching the box B _1, FIG. 7, the onset mounted overlaid on existing box B ₀ FIG. 8 is a cross-sectional view of the state in which the wiring device A is attached to the box B _{1 according} to the light via the wiring device mounting frame F, FIG. 8 is a cross-sectional view taken along line YY of FIG. 7, and FIG. end box B ₁ according to the invention is inserted and connected the protective cover C ₁ is a perspective view of a state of being installed close to the wall W _2.

First, the box B _{1 according} to the present invention will be described with reference to FIGS. 1 to 5, and then the box B ₁ is overlaid on the existing box B ₀ installed in the wall body W ₁ . mount Te (and fixed), a method for wiring the extension cable K _0. The box main body 10 has a point-symmetrical shape with respect to the center of the rectangular front opening 2 in the front view, and the front and lower ends of the front surface of the box main body 10 are closed plate portion 1 along the lateral direction. The remaining most part is a rectangular front opening 2. The upper and lower closing plate portions 1 are flush with the front end surface of the box body 10, and the remaining portions other than the portion facing the front opening 2 are the lateral side wall portions 5 a ₁ , 5 a ₂ constituting the box body 10. , And the vertical side wall portions 5b ₁ and 5b ₂ are integrally connected to each other. Upper and lower end portions of the bottom wall portion 3 of the box body 10 (back portions of the respective closing plate portions 1) are cut out by a width corresponding to the width of the closing plate portion 1, thereby forming a bottom opening 4. . A total of four corner portions (corner portions) 6 that are the boundary portions between the horizontal side wall portions 5a ₁ and 5a ₂ and the vertical side wall portions 5b ₁ and 5b ₂ are bent.

In addition, a total of three screw insertion holes, one central screw insertion hole 7 and a pair of side screw insertion holes 8, are provided along the lateral direction at the upper and lower ends of the bottom wall portion 3 of the box body 10. Is formed. Therefore, a total of six screw insertion holes 7 and 8 are opened in the bottom wall portion 3 of the box body 10, and the screw 11 is screwed into one of the screw insertion holes 7 and 8 as shown in FIG. 6. The box main body 10 is fixed to the wall surface. In addition, when the box body 10 is installed outside the wall in the “overlapping installation mode”, the box body is provided so that the existing cable K and the extension cable K ₀ can be pulled out of the wall from the existing box B _0. The bottom wall 3 of 10 is formed with a partially cut-off slit 12 that is substantially similar to the rectangular bottom wall 3 in the circumferential direction, and punches out the portion of the break-up slit 12. Thus, the cable insertion opening 13 (see FIGS. 6 to 9) connected to the opening of the existing box B ₀ on the back is formed.

In addition, a short rail body 14 having a substantially T-shaped cross section is provided on the back surface side of each closing plate portion 1 formed integrally above and below the front opening 2 of the box body 10 and at the center in the lateral direction as follows. It is integrally formed along the direction. That is, the short rail body 14 is perpendicular to the screwing direction P of the screw 11 that fixes the box body 10, and the line segment that connects the screw holes 24 a with the frame mounting bodies G attached to the box body 10. The box body 10 is integrally formed along the direction Q. Further, each of the upper and lower closing plate portions 1 is formed with one positioning projection 15 protruding forward at a point-symmetrical position with respect to the center of the front opening 2 of the box body 10. As shown in FIG. 9, the positioning protrusion 15 is a member for positioning and attaching the wiring fixture mounting frame F to the box B ₁ at a normal position. In FIG. 2, reference numeral 17 denotes a slide mold (core mold) used to enable molding of the undercut portion of the short rail body 14 on the back surface side of the closing plate portion 1 at the time of injection molding of the box B _1. ) And has no relation to the function as a box.

  1 and 2, a frame mounting body G for mounting the wiring fixture mounting frame F to the box body 10 is a dovetail groove forming portion 22 formed with a dovetail groove 21 that is fitted to the short rail body 14. And a screw hole forming part 24 in which a nut body 23 is embedded in the back part are integrally formed, and the front surface on which the dovetail groove 21 and the screw hole 24a are formed is formed on the closing plate part 1. In this configuration, a step surface 25 having the same step amount as the thickness of the portion where the short rail body 14 is formed is formed. For this reason, in a state where the frame mounting body G is arranged on the extension line of the short rail body 14 inside the front opening 2 of the box body 10 and the short rail body 14 is inserted into the groove 21 of the frame mounting body G, When the frame mounting body G is slid in the direction of the arrow Q, the stepped surface 25 of the frame mounting body G comes into contact with the end surface of the closing plate portion 1 of the box body 10, and the screw hole 24a faces the front side. A frame attachment body G is fitted to each of the pair of upper and lower short rail bodies 14 (see FIG. 1).

As shown in FIGS. 1 to 4, the side wall 5 a ₁ , 5 a ₂ has a side wall 3 on the side of the bottom wall 3 at the center of the box body 10 in the circumferential direction. A first connection port 31 for connecting an end of a large protective cover C ₁ (see FIGS. 5 to 7) to be disposed is provided on the bottom wall 3 side. A closing plate 32 is fitted into the first connection port 31, and is removed when the protective cover C ₁ is connected to the box body 10.

Further, as shown in FIGS. 2 to 4, four corner portions 6 which are boundaries between the respective lateral side wall portions 5a ₁ and 5a ₂ and the respective vertical side wall portions 5b ₁ and 5b ₂ constituting the box main body 10. Of the two corner portions 6 adjacent to each other in the vertical direction, the second connection is performed across the two adjacent side wall portions 5a ₁ and 5b ₁ (5a ₂ and 5b ₁ ) including the corner portion 6. It is closed by a severable closing plate 34 so that the mouth 33 can be formed. The closing plate portion 34 is formed to be thinner than the wall thickness of the horizontal side wall portions 5a ₁ and 5a ₂ and the vertical side wall portions 5b ₁ and 5b ₂ of the box body 10 so that a step is formed on the inner surface. On the inner surface of the closing plate portion 34, first cutting grooves V ₁ are formed in the depth direction at both ends in the width direction, and the second cutting grooves V are formed in portions corresponding to the corner portions 6 of the box body 10. ₂ is formed in the same direction, and a third cutting groove V ₃ is formed with a predetermined width inside the first cutting groove V ₁ formed in the lateral side wall portions 5a ₁ and 5a ₂ . A second connection port through which the end of the large-sized protective cover C ₁ can be inserted when the entire blocking plate 34 is cut off at the first cutting grooves V ₁ at both ends in the width direction of the blocking plate 34. 33 is formed, and when the closing plate 34 is cut off at the first cutting groove V ₁ and the third cutting groove V ₃ formed in the vertical side wall portion 5b ₁ , the end portion of the protective cover C ₂ having a small size is formed. Another second connection port 33 ′ (see FIG. 12 and FIG. 13) into which can be inserted is formed. Therefore, in order to form the second connection port 33 for inserting the end portion of the protective cover C ₁ of large size, as shown in FIG. 5 (a), the first cutting of the side closer to the first connection port 31 after cutting the first cut pieces 34a is a flat plate-shaped portion of the closing plate part 34 in each portion of the groove V ₁ and the second cutting grooves V _2, as shown in FIG. 5 (b), first the other 1 When the second cut piece 34b which is the remaining part of the closing plate portion 34 is cut at the cut groove V ₁ , the corner portion 6 of the box body 10 includes two adjacent side wall portions 5a ₁ , including the corner portion 6. The second connection port 33 is formed over 5b ₁ (5a ₂ , 5b ₁ ). As described above, the closing plate portion 34 is formed over the two adjacent side wall portions 5a ₁ and 5b ₁ (5a ₂ and 5b ₁ ) including the corner portion 6 of the box body 10, and the curved portion is formed. Therefore, it is difficult to cut by a single cutting operation, but the second connecting port 33 can be formed by reliably cutting the blocking plate portion 34 by cutting in two steps as described above. In order to insert and connect the end portions of the large and small protective covers C ₁ and C ₂ , if the second connection ports 33 and 33 ′ are formed in the box body 10 as described above, the vertical side wall portion 5 b ₁ Is formed with an abutting end face 16 on which the end faces of the protective covers C ₁ and C ₂ can abut. In FIG. 3, reference numeral 18 denotes a severable closing plate portion formed on each of the vertical and horizontal side wall portions 5a ₁ , 5a ₂ , 5b ₁ , 5b ₂ in order to form a connection port for another protective cover. .

  Next, with reference to FIG.1 and FIG.9, the attachment relationship of the wiring fixture attachment frame F which attaches the wiring fixture A, the decorative plate D, and the decorative plate attachment frame E is demonstrated. The wiring device mounting frame F for mounting the wiring device A is mounted in a state where the wiring device mounting frame F is in contact with the front surfaces of the upper and lower closing plate portions 1 of the box body 10. The wiring device A is inserted into the opening 41 at the center of the wiring device mounting frame F, and is fixedly attached to the device mounting frame F in a state of protruding from the front surface of the wiring device mounting frame F by a predetermined thickness. A screw insertion long hole 42 having a long hole shape in the horizontal direction is formed above and below the opening 41 of the wiring device mounting frame F and in the center portion in the horizontal direction (width direction). A screw 43 for fixing the wiring fixture mounting frame F to the frame mounting body G of the box body 10 is inserted into the screw insertion long hole 42. Further, a portion immediately above the screw insertion long hole 42 above the wiring fixture mounting frame F and a portion directly below the lower screw insertion long hole 42 are partially cut and raised to the front side, and a screw lower hole 44 is formed in this portion. Is formed. A screw 45 for fixing the decorative plate mounting frame E to the wiring device mounting frame F is screwed into the screw lower hole 44. In addition, positioning holes 46 are formed on both sides of the pair of upper and lower screw insertion long holes 42, respectively. When the wiring device mounting frame F is attached to the front surface of the box body 10, the positioning holes 46 are positioned by fitting the positioning protrusions 15 of the box body 10. The decorative plate mounting frame E has a rectangular frame shape, and a pair of screw insertion holes 51 are provided along the vertical direction at the same pitch as the pair of screw lower holes 44 of the wiring device mounting frame F. Yes. In addition, at the four corners of the decorative plate mounting frame E, engaging holes 53 that are engaged with engaging claws 52 that protrude from the back side of the decorative plate D are formed.

Next, with reference to FIGS, existing boxes are installed (embedded) in close proximity to the wall W ₂ wall W ₁ at internal corner of each wall W _1, W ₂ The box B _{1 according} to the present invention is installed outside the wall body W ₁ in a state of being superposed on B ₀ , and the extension cable K ₀ connected to an outlet to be added to another place outside the wall is stored. described construction method of installing a large protective cover C ₁ size for proximate to the wall W _2. Here, the box B ₁ is arranged at the corners formed by the walls W ₁ , W ₂ , and the protective cover C ₁ for housing the additional cable K ₀ drawn from the existing box B ₀ is provided with the wall W ₂ , the closing plate on the side to which the large-sized protective cover C ₁ is connected among the closing plate portions 34 provided at the two adjacent corner portions 6 of the box B _1. The part 34 is cut as described above, and the second connection port 33 is opened.

First, the decorative plate D attached to the existing box B ₀ , the decorative plate mounting frame E, and the wiring device mounting frame F to which the wiring device A is attached are removed, and the opening of the existing box B ₀ is exposed to the wall surface. I will. In this state, by inserting the cable K ₀ for additional in conduit 61 which is connected to the existing box B _0, draw the wall table from the opening of the existing box B _0. In this state, the pair of upper and lower screw holes 62 for attaching the wiring fixture mounting frame F to the existing box B ₀ are exposed facing the wall surface. The pair of upper and lower screw holes 62 are provided in the center of the existing box B _{0 in} the width direction, and are provided in the frame attachment body G in a state where the box B _{1 according} to the present invention is superimposed on the existing box B _0. The screw holes 24a are positioned substantially on the same line. Therefore, the "superposition Installation form" bis 11 inserted through the central screw through hole 7 provided in the bottom wall 3 of the box B _1, and screwed into threaded holes 62 of the existing boxes B ₀ , when mounting the box B ₁ overlaid on existing box B _0, the frame attachment member G box B ₁ is an obstacle. For this reason, the screw 11 inserted into the central screw insertion hole 7 of the bottom wall portion 3 of the box body 10 using the screwdriver 20 with the pair of upper and lower frame mounting bodies G removed from the box body 10 is attached to the wall body. by screwing the threaded hole 62 of the existing boxes B ₀ installed in W _1, mounted by superposing box B ₁ according to the present invention on the existing box B _0, after which the box B ₁ The frame attachment bodies G are fitted on the pair of upper and lower short rail bodies 14, respectively. Cause is fitted a pair of frame mounting member G in the box body 10, it is desirable to perform the box B ₁ arranged to overlap the existing box B ₀ after securing to the existing box B _0.

Here, when installing the box B ₁ on the wall surface so as to overlap the existing box B ₀ , as shown in FIGS. 7 to 9, the existing box B ₀ passes through the cable insertion opening 13 and enters the box B ₁ . The end of the protective cover C ₁ that accommodates the extended cable K ₀ that has been drawn out is inserted into the second connection port 33 of the box B ₁ so that the protective cover C ₁ can be placed close to the wall W _2. To do. That is, before fixed by screws 11 to the box B ₁ with respect to the existing box B _0, the extension cable K ₀ in a state housed in the protective cover C _1, end box B ₁ of the protective cover C ₁ is inserted into the second connection port 33 of the excising the closing plate part 34 of the box body 10, the abutment end face 16 which is formed in a portion of the vertical side wall portions 5b ₁ the end face of the protective cover C ₁ equivalents In this state, it is desirable that the box B ₁ is fixed to the existing box B ₀ with screws 11 in this state. The protective cover C ₁ includes a base (base) 63 fixed to the wall surface and a lid (cover) 64 that covers the base.

  Next, the frame mounting body G is arranged in the front opening 2 of the box body 10 that is exposed and attached to the wall surface, and each short rail that is attached to the back surface of each upper and lower closing plate portion 1 of the box body 10. Each frame attachment body G is slid along the arrow Q with respect to the body 14, and the frame attachment body G is fitted with respect to the short rail body 14 (refer FIG. 1). Then, as shown in FIG. 6, the upper and lower closing plate portions of the box body 10 are connected to the wiring fixture mounting frame F to which the wiring fixture A that has been taken out from the wall surface in a state of being connected to the cable K is attached. When the screw 43 inserted through the screw insertion long hole 42 is screwed into the nut body 23 embedded in the deep part of the screw hole 24a of the frame mounting body G, the wiring device A is attached. The wiring fixture mounting frame F is attached to the opening surface of the box body 1. Thus, by attaching the wiring fixture mounting frame F to the box body 10, each frame mounting body G cannot move in the direction of the arrow P with respect to the wiring fixture mounting frame F, and the front side of the box body 10. (See FIG. 9). When the wiring fixture mounting frame F is attached to the front surface of the box body 10, the positioning protrusions 15 of the box body 10 are inserted into the two positioning holes 46 in the diagonal direction among the positioning holes 46 formed one above the other. By fitting, the wiring fixture mounting frame F is positioned with respect to the box body 10.

Finally, the front face of the wiring device mount frame F through the upper and lower screws 45 attach the decorative plate mounting frame E, when attaching the decorative plate D on the front of the decorative plate mounting frame E, overlaid on existing box B ₀ In the combined state, the box B ₁ according to the present invention is installed in a state of being exposed on the wall surface of the wall body W ₁ .

As described above, the box B ₁ of the present invention has a total of four side wall boundaries between the set of side wall portions 5a ₁ , 5a ₂ and the set of vertical side wall portions 5b ₁ , 5b ₂ constituting the box body 10. The two corners 6 adjacent to each other in the vertical direction among the four corners 6 are covered with the closing plate part 34 in which the second connection port 33 is formed by cutting, and thus are covered with the closing plate part 34. One of the two corners 6 is cut to open the second connection port 33, and the end of the protective cover C ₁ containing the additional cable K ₀ is inserted into the second connection port 33 of the box body 10. Thus, the protective cover C ₁ can be connected above the box body 10. For this reason, as shown in FIG. 8 and FIG. 10A, an existing box B ₀ is installed in the wall at one wall edge (entrance corner) in the wall body W ₁ and overlaps with the existing box B ₀ . The protective cover C ₁ connected to the installed box B ₁ has one side surface of the protective cover C ₁ substantially flush with the outer side surface of the vertical side wall portion 5b ₁ of the box body 10 so that the wall W ₂ is installed in close contact with the wall body W _{2 so} that no gap is generated between the wall body W ₂ and the wall body W ₂ . As a result, it is connected to the box B ₁ exposed at the wall, and the installation state of the protective cover C ₁ that is also exposed at the wall becomes good, so that the beauty at the wall is not impaired.

On the other hand, in the case where the box B ₁ is exposed at the other wall of the same wall body W ₁ , as shown in FIG. 10B, when the box B ₁ is turned upside down, the box B ₁ is moved along the vertical direction. results that can open the second connection port 33 of the other are adjacent and can be installed protective cover C ₁ in proximity to the wall W ₃ and the other near wall connected to the upper side of the box B _1, similarly the wall The aesthetics in are no longer impaired. Further, as shown in FIG. 11 (a), (b) , at one wall side of the close to the wall W _2, and the vertical arrangement of the box B ₁ intact, in any of the above and below the box B ₁ It can be connected in close proximity to the wall of the protective cover C _1.

Next, another box B ₂ according to the present invention will be described with reference to FIGS. 12 is a perspective view of another box B _{2 according} to the present invention as seen from the back side, and FIG. 13 is a cross-sectional view of YY in FIG. 7 in a state where a small protective cover C ₂ is connected to the box B ₂ . FIG. 14 is a cross-sectional view of a line, and FIG. 14 is a diagram showing different connection forms of the protective cover C _{2 to} the box B ₂ . The box B ₁ of the first embodiment is a boundary portion of each of the four side walls, that is, a set of side wall portions 5 a ₁ and 5 a ₂ and a set of vertical side wall portions 5 b ₁ and 5 b ₂ constituting the box body 10. In contrast to the configuration in which two corners 6 adjacent to each other in the vertical direction among the four corners 6 are covered with the closing plate part 34 in which the second connection port 33 is formed by cutting, the second embodiment The box B ₂ has a configuration in which two corner portions 6 adjacent in the horizontal direction among the four corner portions 6 are covered with a closing plate portion 34 in which the second connection port 33 is formed by cutting.

12 and 13 show an example in which a protective cover C ₂ having a small size is connected to the box body 10, and is on the side of the vertical side wall portions 5 b ₁ and 5 b ₂ formed on the back surface of the closing plate portion 34. The first cut groove V ₁ and the third cut groove V ₃ formed in the lateral side wall portion 5a ₁ are used to cut the closing plate portion 34 to form a second connection port 33 ′, and the second connection A small-sized protective cover C ₂ is inserted into the opening 33 ′, and the end surface of the protective cover C ₂ is brought into contact with the contact end surface 16 formed on the vertical side wall portions 5 b ₁ and 5 b ₂ of the box body 10, A protective cover C ₂ is connected to the box body 10. In FIG. 12, reference numeral 34c denotes a cut piece obtained by cutting the closing plate portion 34 in order to form the second connection port 33 ′.

As described above, the box B ₂ has a configuration in which two corner portions 6 adjacent to each other in the lateral direction among the four corner portions 6 are covered with the closing plate portion 34 in which the second connection port 33 is formed by cutting. Therefore, as shown in FIGS. 14A and 14B, the protective cover C _{2 is} protected against the box B _{2 at} the left and right side walls of the wall W ₁ without turning the box B ₂ upside down. Can be installed close to the wall.

Further, in the case where the box B ₁ (B ₂ ) is installed at a portion other than the wall edge of the wall body W ₁ , as shown in FIG. 15, in the circumferential direction of the side wall portion 5a ₁ (5a ₂ ) of the box body 10. The protective cover C ₁ can be connected using the first connection port 31 at the center along the line. As described above, the box B ₁ (B ₂ ) has the first connection port 31 formed in the center portion in the circumferential direction of the side wall portions 5a ₁ and 5a ₂ of the box body 10 and each corner of the box body 10. Since the second connection port 33 is formed in the portion including the portion 6, the first and second connection ports 31, 33 can be used properly according to the installation position of the box B ₁ (B ₂ ). it can.

In the first embodiment, the “superposition installation mode” in which the box B _{1 according} to the present invention is installed on the existing box B ₀ installed in the wall has been described. However, a new outlet is required. Of course, it is also possible to use it in an “independent installation form” in which a box is installed independently in a part.

FIG. 4 is an exploded perspective view of the box B _{1 according} to the present invention, a wiring device mounting frame F to which the wiring device A is mounted, a decorative plate mounting frame E, and a decorative plate D. 4 is an exploded perspective view of the box body 10 and a frame attachment body G attached to the box body 10. FIG. It is a perspective view of the box B ₁ from the back side. (A), (b) is an enlarged sectional view of the X ₁ -X ₁ line and X ₂ -X ₂ line in FIG. 3, respectively. (A), (b) is a perspective view which shows the condition which cut | disconnects the obstruction board part 34 of the box main body 10 in two steps. A state in which mounting the box B ₁ according to the proximity to the overlaid on existing box B _0, which is embedded in the wall W ₁ in the invention in the wall of W ₂ in internal corner of each wall W _1, W ₂ It is sectional drawing shown. It is a cross-sectional view of a state in which the wiring device A via the wiring device mounting frame F is attached to the box B ₁ according to the present invention mounted overlaid on existing box B _0. It is the YY sectional view taken on the line of FIG. Is a perspective view of a state where the protective cover C ₁ to end the box B ₁ is being inserted and connected in accordance with the present invention is installed in proximity to the wall W _2. It is a diagram illustrating a different connection form the protective cover C ₁ for box B _1. It is a diagram showing a further different connection form of the protective cover C ₁ for box B _1. Another box B ₂ according to the present invention is a perspective view from the rear. A line Y-Y cross-sectional view of FIG. 7 in a state of being connected to the box B ₂ small protective cover C ₂ sizes. It is a diagram illustrating a different connection form the protective cover C ₂ with respect to the box B _2. Box B ₁ (B ₂₎ is a diagram showing a connection form the protective cover C ₁ when installed in a portion excluding the the wall. It is a diagram showing a connection form the protective cover C ₁ to conventional box B '.

B ₁ and B ₂ : Box for wiring
C ₁ and C ₂ : Protective cover for wiring
K: Already wired cable
K ₀ : Extension cable
V ₂ : Second cutting groove (cutting groove)
W ₁ , W ₂ , W ₃ : Wall body
3: Bottom wall
5a ₁ , 5a ₂ : Lateral side wall (side wall)
5b ₁ , 5b ₂ : vertical side wall (side wall)
6: Corner
10: Box body
16: Contact end face
31: 1st connection port 33,33 ': 2nd connection port
34: Blocking plate

Claims (1)

A connection port that is inserted into the side wall of the box body and connected to the end of the wiring protective cover for storing the wiring material is opened on the bottom wall side of the box body, and is exposed on the wall surface. A wiring box ,
A cover is covered with the base, the wiring material is housed inside, and a protective cover for wiring in which an end is inserted into the connection port of the wiring box;
A wiring box device comprising:
Connection port of the wiring box, including a corner that is the boundary of two adjacent side walls of said box body, is formed continuously over two side wall portions the adjacent,
The width that is the length along the circumferential direction of the box body of the connection port as viewed from the insertion direction of the protective cover for wiring corresponds to the width of the protective cover for wiring,
The end surface of the side wall portion that forms a part of the periphery of the connection port and is visible from the insertion direction of the wiring protection cover is a contact with which at least the end surface of the lid constituting the wiring protection cover abuts It is an end face ,
In a state where the end portion of the wiring protective cover is inserted into the connection port of the wiring box, at least the end surface of the lid constituting the wiring protective cover is in contact with the contact end surface, and the contact A wiring box device characterized in that the wiring box device is configured not to enter the wiring box beyond the end face .

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