JP4245153B2 - Wiring box device - Google Patents

Description

The present invention relates to a wiring box device including a box cover that is used by being attached to a wiring box in order to install a wiring device on a building wall.

  In order to install a wiring appliance such as an outlet on a building wall, a wiring box having a bottomed square box shape and a box cover having a frame shape attached to the opening side of the wiring box are used. The box cover includes a type used when installing wiring equipment on a concrete wall that is a kind of building wall, and a lightweight partition wall that is a building wall constructed by standing a pair of wall materials. Some types are used when installing wiring equipment.

  The former box cover (concrete burying type) is disclosed in Patent Document 1, for example. This box cover is provided with an instrument mounting portion having a certain thickness on the front surface of the substrate, and an opening is formed inside the instrument mounting portion. On the other hand, the latter box cover (in-wall arrangement type) is not provided with the instrument mounting portion on the front surface, and the frame portion of the substrate has a flat plate shape. Note that the opening in the in-wall-type box cover is formed wider than the concrete-buried type opening.

  When using a concrete buried type box cover, first, the box cover is attached to the opening side of the wiring box, and the wiring box is buried in the concrete wall together with the box cover. When the box cover is embedded in the concrete wall, only the front end surface of the instrument mounting portion is exposed on the wall surface of the concrete wall, and the other parts are embedded in the concrete wall. After that, when the mounting screw is screwed from the wiring device frame holding the wiring device to the mounting portion provided in the coating portion, the wiring device frame is attached to the box cover and the wiring device is installed on the concrete wall. Is done.

  On the other hand, in the case of using a wall-mounted box cover, first, a wiring box is attached to the side surface of a pillar erected in the building, and a box cover is attached to the opening side of the wiring box. . Then, a pair of wall members are erected on both the front and rear sides of the wiring box to construct a lightweight partition wall. Thereafter, the wall material on the front side of the box cover is cut off, and the opening peripheral edge portion of the box cover faces the front side of the wall material. When a screw is screwed into a mounting portion provided on the substrate from the wiring device frame holding the wiring device, the wiring device frame is attached to the box cover and the wiring device is installed on the lightweight partition wall.

  In the above-mentioned two types of box covers, the concrete-embedded type box cover is provided with an appliance mounting portion, so that a part other than the appliance mounting portion can be embedded in the concrete wall, and the wiring appliance is placed on the wall surface of the concrete wall. It is possible to form an opening having a minimum size for installation. In addition, the concrete-embedded type box cover has a structure in which an opening is formed in the center of the box cover so that the frame portion is not deformed by the concrete placing pressure when the concrete wall is constructed, and the rigidity of the box cover is not lowered. It has become.

  However, when a concrete buried type box cover is used for a lightweight partition wall, the wiring box is separated from the wall material by the thickness of the standing portion in addition to the thickness of the wall material. This is a state in which the wiring apparatus is hardly accommodated in the wiring box, and the concrete buried type box cover is not suitable for a lightweight partition.

  On the other hand, unlike the concrete burying type, the box cover of the in-wall arrangement type has a flat plate shape without a standing portion. For this reason, the box cover of the in-wall arrangement type can be disposed in a state where the front surface thereof is in close contact with the back surface of the wall material. This leads to bringing the wiring box through the box cover closer to the wall material, and leads to an increase in the number of wiring devices accommodated in the wiring box.

However, in the wall cover type box cover, an opening is formed in almost the entire substrate, and the width of the frame part is narrower than the width of the concrete buried type frame part. For this reason, when a box cover of a wall-mounted type is used for burying concrete, concrete may enter the wiring box from the opening or the frame portion may be deformed by the concrete placing pressure. That is, the box cover of the in-wall arrangement type is not suitable for concrete burying. Accordingly, the two types of box covers include a building wall suitable for use and a building wall unsuitable for use, and the box cover is properly used according to the building wall where the wiring apparatus is installed.
Japanese Utility Model Publication No. 1-1123410

  However, the operator who installs the wiring equipment should consider the type of building wall (concrete wall, lightweight partition wall) to which the wiring equipment is to be installed in advance, and the box cover to be used (concrete buried type, distribution in the wall). There was a problem that it had to be selected and prepared.

The present invention has been made paying attention to the problems existing in the above-described prior art. An object of the present invention is to provide a wiring box device including a box cover that can be used corresponding to each of two types of building walls.

In order to solve the above problems, the invention according to claim 1 is attached to a wiring box having a bottomed square box shape and an opening side of the wiring box, and a wiring device frame is attached to the wiring box. A wiring box device comprising a box cover for installing a wiring device held on a wiring device frame on a building wall, and engaging protrusions on a pair of opposite side walls on the opening side of the wiring box The coating cover portion provided with mounting portions opposed to each other on the upper and lower sides is erected so as to have a certain thickness only on one surface of the frame portion of the substrate having a substantially square frame shape of the box cover. wherein the side edge portions of the coating margin portion is only one surface which is erected a pair of ribs facing each vertically erected lower than the thickness of the coating margin portion, the inner surface of the ribs of the substrate with there Is engaged with the engaging protrusion The engagement recess is recessed, the other surface of the frame portion of the substrate is formed in a flat plate shape, and the mounting screw inserted through the wiring device frame can be screwed from any surface side of the frame portion The gist is that the mounting portion is provided on the substrate.

(Function)
Therefore, according to the first aspect of the present invention, the mounting portion is mounted from both sides of the frame portion so that one surface or the other surface of the frame portion is exposed to the front side of the wiring box. A mounting screw can be screwed onto the housing. In other words, the box cover can be used when installing a wiring apparatus on a building wall suitable for using one side with a coating part and a pair of ribs standing upright. It can also be used when installing wiring equipment on a building wall suitable for using the other side that is not. Further, the box cover can be easily attached to the wiring box by the engagement between the engagement recess and the engagement protrusion.

According to the wiring box device according to claim 1 having the above-described configuration, one box cover can be used corresponding to each of two types of building walls.

Hereinafter, first and second embodiments of the present invention will be described. Note that only differences from the first embodiment will be described in the second embodiment.
(First embodiment)
Hereinafter, an embodiment of a box cover embodying the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the box cover 11 is attached to the opening side of a wiring box 12 having a bottomed square box shape. Specifically, the synthetic resin box cover 11 includes a substrate 10 having a substantially square frame shape, and an opening 11 a is formed at the center of the substrate 10. The opening 11 a is formed in an elongated rectangular shape in front view extending up and down the box cover 11.

  As shown in FIG. 2A, on the front surface (first substrate surface 11A) as one surface of the frame portion of the substrate 10, a coating portion 13 having an elongated rectangular frame shape is formed on the peripheral portion of the opening 11a. The coating allowance portion 13 is provided so as to protrude outward so as to have a certain thickness. On the other hand, as shown in FIG. 2B, on the rear surface (second substrate surface 11B) as the other surface of the frame portion of the substrate 10, the coating portion 13 is formed on the peripheral portion of the opening 11a. The second substrate surface 11B has a flat plate shape.

  As shown in FIG. 1, in the coating portion 13, attachment portions 14 each having a substantially cylindrical shape are provided at the center portions of a pair of short sides that face each other in the vertical direction. As shown in the enlarged views of FIGS. 3 and 3, the upper mounting portion 14 and the lower mounting portion 14 are respectively provided with a recess 14a, and the recess 14a of the upper mounting portion 14 is directed upward. The recess 14a of the lower mounting portion 14 is formed so as to open downward. Nuts N are disposed in the recesses 14a, and the nuts N are press-fitted into the recesses 14a and provided in the mounting portion 14, respectively.

  In each mounting portion 14, both the front and rear surfaces of the nut N are clamped by the clamping surfaces 14 c in the mounting portion 14. In other words, the holding surfaces 14c are in contact with both front and rear surfaces of the nut N, and the movement of the nut N in the front-rear direction, in other words, the front-rear direction of the mounting portion 14 is restricted by the corresponding contact. Each attachment portion 14 is formed with an insertion hole 14b penetrating through the attachment portion 14. One end of the insertion hole 14b is opened to the first substrate surface 11A of the substrate 10, that is, the front end surface of the coating portion 13. The other end of the insertion hole 14b is opened to the second substrate surface 11B of the substrate 10.

  As shown in the broken lines in FIG. 1 and FIG. 2A and FIG. 2B, knockout portions 15 that extend in an arc shape along the circumferential direction of the opening 11a are respectively located inside the corner portions of the box cover 11. Is provided. On the first substrate surface 11 </ b> A side, a cut is formed along the peripheral edge of the knockout portion 15, and the knockout portion 15 itself is formed thinner than other portions of the substrate 10. Therefore, the knockout portion 15 can be punched and removed from the box cover 11. Each knock-out portion 15 has a mounting hole 15a that penetrates the knock-out portion 15 one by one.

  Next, the wiring box 12 will be described. As shown in FIG. 1, the synthetic resin wiring box 12 is formed in a bottomed square box shape. Boss portions 22 are respectively provided on the inner surfaces of the side walls facing the top and bottom of the wiring box 12, and the boss portions 22 are respectively positioned on the opening side of the wiring box 12. Each boss portion 22 is formed with a boss hole 22a. Next, the wiring device frame 23 shown in FIG. 4 will be described. The metal wiring device frame 23 is in the form of an elongated square plate, and attachment holes 23a to which the wiring device 30 can be attached are formed at two locations. Further, screw holes 23b are formed at both upper and lower ends of the wiring device frame 23.

  Now, a method of using the box cover 11 having the above configuration will be described. First, a method of using the box cover 11 for installing the wiring device 30 on the concrete wall W will be described. As shown in FIG. 1, the screw 24 is inserted from the pair of attachment holes 15a into the boss holes 22a so that the coating portion 13 is exposed to the front side of the wiring box 12. Further, the screw 24 is screwed onto the boss portion 22 and the box cover 11 is attached to the opening side of the wiring box 12 to constitute a wiring box device including the box cover 11 and the wiring box 12.

  Next, a pair of molds (not shown) are erected to construct the concrete wall W, and the wiring box 12 is illustrated so that the entire front surface of the coating portion 13 is in close contact with the back surface of one of the molds. It is supported in the mold by non-supporting means. When concrete is placed between the pair of molds, the wiring box 12 and the box cover 11 are embedded in the concrete.

  At this time, in the first substrate surface 11 </ b> A of the box cover 11, portions other than the coating portion 13 are embedded in the concrete wall W, and only the front end surface of the coating portion 13 faces the surface of the concrete wall W. Then, on the wall surface of the concrete wall W, only the opening 11a having a minimum size for installing the wiring device 30 is formed. In the box cover 11, the width of the frame portion of the substrate 10 is sufficiently long, so that the frame portion and thus the substrate 10 is prevented from being deformed by the concrete placing pressure. It can be said that the first substrate surface 11A on which the coating portion 13 in the box cover 11 is formed has a configuration suitable for use when installing the wiring device 30 on the concrete wall W.

  When the pair of molds are removed after the concrete is hardened, a concrete wall W is constructed as shown in FIG. 4, and a box cover 11 and a wiring box 12 (wiring box device) are provided on the concrete wall W. Buried. In this embedded state, the front end surface of the coating portion 13 and the insertion hole 14b opened to the coating portion 13 side are exposed on the wall surface of the concrete wall W.

  Then, the mounting screws 28 are inserted into the upper and lower screw holes 23b of the wiring device frame 23 holding the wiring device 30, and the mounting screws 28 are inserted into the mounting portion 14 from the insertion holes 14b facing the concrete wall W. The mounting screw 28 is screwed onto the nut N, and the mounting screw 28 is screwed onto the mounting portion 14. As a result, the rear surface of the wiring device frame 23 comes into contact with the front end surface of the coating portion 13, and the wiring device frame 23 is supported at a position separated from the substrate 10. Then, the wiring device 30 is attached to the box cover 11 via the wiring device frame 23, and the wiring device 30 is installed on the concrete wall W.

  Next, a method of using the box cover 11 for installing the wiring device 30 on the lightweight partition wall K will be described. First, as shown in FIG. 5, nails (not shown) are struck from the inside of the wiring box 12 to the side surface of the pillar 31 erected in the building, and the wiring box 12 is attached to the pillar 31. Next, the box cover 11 is mounted so that the flat surface of the substrate 10 (second substrate surface 11B) is exposed to the front side of the wiring box 12, and the coating portion 13 side is accommodated in the wiring box 12. It is arranged on the opening side of the wiring box 12.

  At this time, since the positions of the mounting hole 15a and the boss hole 22a do not match, the knockout portion 15 at the position corresponding to the boss portion 22 is punched and removed from the box cover 11 to form a long groove in the substrate 10. Then, the position of the screw 24 is adjusted in the opened knockout portion 15, the screw 24 is inserted into each boss hole 22 a, and is screwed into the boss portion 22 to attach the box cover 11 to the opening of the wiring box 12. Install on the side. Then, a wiring box device including the box cover 11 and the wiring box 12 is configured.

  Next, the pair of wall members 32 are erected in front of and behind the wiring box 12 (only the front wall member 32 is shown in FIG. 5), and the lightweight partition wall K is constructed by the pair of wall members 32. When the wall member 32 is erected, the second substrate surface 11B of the substrate 10 is brought into contact with the back surface of the front wall member 32, and the opening 11a is brought close to the front wall member 32.

  Then, in the front wall member 32, the front wall member 32 is cut so that the peripheral edge of the opening 11 a of the box cover 11 faces the front surface of the lightweight partition wall K. Next, the mounting screws 28 are inserted into the upper and lower screw holes 23b of the wiring device frame 23 holding the wiring device 30, and the mounting screws 28 are opened from the respective insertion holes 14b opened to the second substrate surface 11B side of the substrate 10. While being inserted into the mounting portion 14, the mounting screw 28 is screwed into the nut N and screwed to the mounting portion 14. As a result, the wiring device frame 23 is attached to the box cover 11 with the back surface of the wiring device frame 23 in contact with the front wall member 32, and the wiring device 30 is installed on the lightweight partition wall K.

  Here, when the wiring board 30 is installed on the lightweight partition wall K using the box cover 11 by exposing the first substrate surface 11A side where the coating portion 13 is erected from the inside of the wiring box 12, In addition to the thickness of the material 32, the wiring box 12 is separated from the front wall material 32 by the thickness of the coating portion 13. This is because the wiring device 30 to be installed on the front surface of the front wall member 32 is separated from the wiring box 12, and the portion accommodated in the wiring box 12 in the wiring device 30 is reduced. It is not suitable.

  On the other hand, when the second substrate surface 11B of the box cover 11 is used, the second substrate surface 11B has a flat plate shape without the coating portion 13 being erected, so that the first substrate surface 11A is used. In comparison, the wiring box 12 through the box cover 11 can be brought closer to the back surface of the wall material 32. This can increase the parts of the wiring device 30 accommodated in the wiring box 12 by the thickness of the coating part 13.

  Therefore, using the second substrate surface 11B is suitable for installing the wiring device 30 on the light partition wall K. As a result, it can be said that the 2nd board surface 11B in which the coating part 13 side in the box cover 11 is not formed has a structure suitable for using when installing the wiring appliance 30 in the lightweight partition wall K. FIG.

According to the first embodiment, the following effects can be obtained.
(1) The box cover 11 has a coating portion 13 standing on the first substrate surface 11A of the substrate 10, and the second substrate surface 11B has a flat plate shape without the coating portion 13 standing. Then, the usage surface of the box cover 11 (in other words, the mounting surface to the wiring box 12) is changed according to the type of the building wall (concrete wall W or lightweight partition wall K) where the wiring device 30 is installed. can do. Therefore, it is not necessary to prepare separate box covers 11 according to the type of building wall, and troublesome work such as selection of the box cover 11 can be omitted.

  (2) The insertion holes 14 b are opened on both sides of the mounting portion 14, and the nut N is clamped from both sides of the substrate 10 by the clamping surface 14 c in the mounting portion 14. That is, the clamping surface 14c is in contact with both the front and rear surfaces of the nut N. For this reason, even if a force in the direction of pulling out the mounting screw 28 from the mounting portion 14 (forward or backward of the nut N) is applied in a state where the mounting screw 28 is screwed onto the nut N, the nut N is clamped. Since the surface 14c is in contact, the nut N can be prevented from being detached from the mounting portion 14 without moving within the mounting portion 14. Therefore, the mounting state of the wiring device frame 23 with respect to the box cover 11 can be maintained regardless of which surface (the first substrate surface 11A or the second substrate surface 11B) the box cover 11 is used. The installation state can be maintained.

  (3) The nut N is disposed in the mounting portion 14 by being press-fitted into a concave portion 14 a provided in the mounting portion 14. Therefore, the nut N can be reliably clamped by the clamping surface 14c, and the movement of the nut N within the mounting portion 14 can be reliably prevented.

(Second Embodiment)
6 to 10 show a second embodiment.
As shown in FIGS. 6, 7 (a), and 7 (b), the box cover 40 includes a substantially square frame-shaped substrate 41, and an opening 41 a is formed at the center of the substrate 41. In addition, a coating portion 43 is provided on one surface (first substrate surface 41A) of the frame portion of the substrate 41, and the other surface (second substrate surface 41B) of the frame portion of the substrate 41 is flat. Yes. As shown in FIG. 8, the coating portion 43 is provided with a mounting portion 44, and the mounting portion 44 is provided with a nut N as in the first embodiment. Note that the front and rear surfaces of the nut N are respectively in contact with the clamping surfaces 44a and are sandwiched between the pair of clamping surfaces 44a. The nut N is disposed on the mounting portion 44 by insert molding when the box cover 40 is molded. The

  Insertion holes 44 b penetrate each attachment portion 44, and the insertion holes 44 b are open on both sides of the substrate 41. As shown in FIGS. 7A and 7B, the box cover 40 is provided with knockout portions 45 at four locations, and mounting holes 45a are formed in the same manner as in the first embodiment.

  Ribs 46 are provided on the four side edges of the first substrate surface 41A of the substrate 41, and engaging recesses 46a are provided on the inner surfaces of the pair of ribs 46 that are opposed to each other in the vertical direction. As shown in FIG. 6, these engagement recesses 46 a are engageable with engagement protrusions 20 a that protrude from both end sides of each side wall on the opening side of the wiring box 12.

  In the box cover 40 of the second embodiment, as shown in FIG. 9, the second substrate surface 41 </ b> B in which the frame portion of the substrate 41 is formed in a flat plate shape is used for installing the wiring device 30 on the lightweight partition wall K. used. On the other hand, as shown in FIG. 10, in the box cover 40, the first substrate surface 41 </ b> A having the coating portion 43 formed on the frame portion is used for installing the wiring device 30 on the concrete wall W.

  As shown in FIG. 9, when the box cover 40 is attached to the wiring box 12 in order to install the wiring device 30 on the lightweight partition wall K using the second substrate surface 41B, the engaging recess 46a is engaged. Engage with the mating protrusion 20a. Then, the box cover 40 is attached to the wiring box 12 with one touch.

  Therefore, according to the box cover 40 of the second embodiment, in addition to being able to exhibit the same effects as (1) and (2) of the first embodiment, the engagement between the engagement recess 46a and the engagement protrusion 20a. Thus, the work of attaching the box cover 40 to the wiring box 12 can be easily performed. Further, when the first substrate surface 41A of the substrate 41 is used, the rib 46 protrudes to the front of the box cover 40. However, since the rib 46 is embedded in the concrete wall W, the rib 46 is a concrete wall. It is not exposed to W, and the appearance is not lowered.

  Further, the nut N is disposed in the mounting portion 44 by insert molding when the box cover 40 is molded. Therefore, the nut N can be securely clamped by the clamping surface 44a, and the movement of the nut N within the mounting portion 44 can be reliably prevented.

In addition, you may change the said embodiment as follows .

  In the first embodiment, the box cover 11 is provided with a rib 46 and an engaging recess 46a, and the wiring box 12 is provided with an engaging protrusion 20a so that the box cover 11 can be attached to the wiring box 12 with one touch. It is good.

○ Knockout portions 15 and 45 may be omitted.
○ The second substrate surfaces 11B and 41B of the box covers 11 and 40 are used to install the wiring device 30 on the lightweight partition wall K as a building wall. However, the wiring device 30 is installed on a wall other than the true wall or the lightweight partition wall K. In doing so, the second substrate surfaces 11B and 41B of the box covers 11 and 40 may be used.

  In each embodiment, the nut N is disposed in the mounting portions 14 and 44. However, the nut N is omitted, and the mounting screw 28 is forcibly screwed into the inner peripheral surfaces of the insertion holes 14b and 44b. The mounting screw 28 may be fixed to the portions 14 and 44.

The perspective view which shows the box cover and wiring box of 1st Embodiment. (A) is a figure which shows one surface of a box cover, (b) is a figure which shows the other surface of a box cover. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. Sectional drawing which shows the use condition of the box cover in a concrete wall. Sectional drawing which shows the use condition of the box cover in a lightweight partition wall. The perspective view which shows the box cover and wiring box of 2nd Embodiment. (A) is a figure which shows the other surface of a box cover, (b) is a figure which shows one surface of a box cover. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. Sectional drawing which shows the use condition of the box cover in a lightweight partition wall. Sectional drawing which shows the use condition of the box cover in a concrete wall.

Explanation of symbols

  K: Lightweight partition wall as a building wall, N: Nut, W ... Concrete wall as a building wall, 10, 41 ... Substrate, 11, 40 ... Box cover, 11A, 41A ... First substrate surface as one surface, 11B, 41B ... second substrate surface as the other surface, 12 ... wiring box, 13, 43 ... coating portion, 14, 44 ... mounting portion, 14a ... concave portion, 23 ... wiring device frame, 28 ... mounting screw, 30: Wiring device.

Claims (1)

A box for wiring in the shape of a square box with a bottom, and a box that is attached to the opening side of the box for wiring and that is mounted on the building wall with the wiring equipment frame attached and held by the wiring equipment frame A wiring box device comprising a cover,
An engagement protrusion is provided on a pair of opposite side walls on the opening side of the wiring box,
The coating cover portion provided with mounting portions opposed to each other in the vertical direction is erected so as to have a certain thickness only on one surface of the frame portion of the substrate having a substantially square frame shape of the box cover. A pair of ribs facing each other in the up and down direction is provided lower than the thickness of the coating portion on the side edge portion of only one surface of the substrate where the coating portion is erected, An engagement recess that engages with the engagement protrusion is recessed, the other surface of the frame portion of the substrate is formed in a flat plate shape, and the mounting screw that is inserted through the wiring device frame is attached to any of the frame portions. A wiring box device, characterized in that a mounting portion that can be screwed from the surface side is provided on the substrate.

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