JP2002176719A - Wiring appliance attachment member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring appliance attachment member which can be attached to a wall opening of an interior wall by fixing its main frame along the edge of the wall opening even if a construction material such as a column, etc., is not provided in the neighborhood of the backside of the wall opening. SOLUTION: This wiring appliance attachment member 2 is fixed to a construction material such as a column, etc., provided on the backside of an interior wall or to a back wall 1 to be attached to a wall opening formed in the interior wall. The main part of the wiring appliance attachment member 2 comprises a main frame 3 in which an opening 31 for containing a wiring appliance is provided. A wiring appliance attachment part 32, to which a wiring appliance contained in the opening 31 formed in the main frame part 3 is attached, is provided in the main frame part 3. A construction member fixing part 4, which is fixed to the side surface of the construction member to enable the attachment of the main frame part 3 along the edge of the wall opening, is provided on the side part of the main frame 3. A back wall fixing part 5, which is fixed-to the front side surface of the back wall 1 to enable the attachment of the main frame part 3 along the edge of the wall opening, is provided at least on one side part of the main frame part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device mounting member provided at a wall opening provided in an interior wall by being fixed to a construction material such as a pillar or a back wall disposed behind an interior wall of a building. It is about.

[0002]

2. Description of the Related Art Conventionally, in order to arrange a wiring device to which an electric wire in a flexible conduit tube on the back side of an interior wall is connected at a wall opening, a switch box is disposed at the wall opening as a wiring device mounting member. A method of attaching the wiring device to the switch box has been adopted.

The switch box has a front surface (an indoor side surface).
Is a substantially box-shaped member having an opening, and the connection of the flexible conduit is also possible. From the interior wall front side (indoor side), wiring devices such as a wall switch and a wall outlet can be connected via a wiring device holding plate. It is possible to attach.

[0004] However, such a switch box has a substantially box shape with an open front, so that the work of connecting to a wiring device can be performed only from the front side of the interior wall. Separate connecting parts are required when connecting the flexible conduit, and the depth of the switch box is increased so that wiring equipment and the like can be accommodated well. When the depth of the gap is small, the switch box cannot be arranged.

Therefore, the present applicant has proposed a wiring device mounting member as shown in FIGS. As shown in FIG. 5, the wiring device mounting member 2 ′ is attached to a construction material B such as a pillar disposed near the back side of a wall opening A1 provided on an interior wall A of a building with a fixing tool F, An end portion of the flexible conduit tube D disposed on the back side of the interior wall A is held by the wiring fixture attaching member 2 ', and an electric wire (not shown) inserted in the flexible conduit tube D is connected to the wiring fixture C. The wiring device C is connected to and attached to the opening 31 'formed in the wiring device mounting member 2'.
As shown in FIG. 6, the wiring device mounting member 2 ′ is mainly composed of a main body frame 3 ′ in which an opening 31 ′ for disposing the wiring device C is formed. Of the wiring device attachment part 32 'of the main body frame part 3'
In addition to being provided at two locations above and below the rim, construction material fixing portions 4 'for fixing the body frame portion 3' to the construction material B are provided on both sides of the body frame portion 3 '. A fixing tool insertion hole 42 'through which the fixing tool F is inserted is drilled in the construction material fixing section 4', and the construction material fixing section 4 ' 4 'is brought into contact therewith, the fastener F is inserted into the fastener insertion hole 42' from the opening 31 'side, and
The main body frame portion 3 ′ is fixed to the building material B by screwing it to 1. In this way, the wiring device mounting member 2 'is disposed in the wall opening A1 so that the main body frame 3' is along the edge of the wall opening A1 provided in the interior wall A. E in the figure is
2 shows a decorative plate disposed on a wall opening A1 from the front side of an interior wall A.

However, such a wiring device mounting member 2 '
In the case where the construction material B such as a pillar is not disposed in the vicinity of the back side of the wall opening A1 provided in the interior wall A, in particular, it is formed with a gypsum board through a gap on the front side of the concrete back wall. In the case where there is no construction material B such as a pillar on the back side of the interior wall A as in the so-called GL method in which the interior wall is arranged, the main body frame portion 3 'may be fixed along the edge of the wall opening A1. There is a problem that the wiring device mounting member 2 'cannot be disposed in the wall opening A1.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide a construction material such as a pillar near the back side of a wall opening provided on an interior wall. It is an object of the present invention to provide a wiring device mounting member which can be disposed in a wall opening by fixing a main body frame portion along a wall opening edge even when the wiring device is not provided.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a wiring device mounting member according to the present invention is fixed to a building material such as a pillar or a back wall 1 disposed on the back side of an interior wall and attached to the interior wall. A wiring device mounting member 2 provided in a wall opening provided, the main body being composed of a main body frame portion 3 having an opening 31 in which a wiring device is provided formed therein. 3
A wiring device mounting portion 32 for mounting a wiring device provided in the opening 31 formed in the wall is provided, and the main frame portion 3 is fixed to the side of the building material on the side of the main frame portion 3 so that the main frame portion 3 is attached to the wall. A building material fixing portion 4 that can be disposed along the opening edge is provided, and the main body frame portion 3 is fixed to at least one side of the main body frame portion 3 on the front side surface of the back wall 1 so that the main body frame portion 3 is attached to the wall opening edge. It is characterized by providing a back wall fixing portion 5 which can be disposed along the rear wall.
With such a configuration, the main body frame portion 3 can be fixed to the side surface of a construction material such as a pillar provided on the back side of the interior wall, and the wiring device mounting member 2 can be provided at the wall opening. In addition, the main body frame 3 can be fixed to the front side of the back wall 1 provided on the back side of the interior wall, and the wiring device mounting member 2 can be provided at the wall opening.

Further, it is preferable that the back wall fixing portion 5 is detachable from the main body frame portion 3. With such a configuration, the back wall fixing portion 5 is attached to the main body frame portion 3 when the main body frame portion 3 is fixed to the front side surface of the back wall 1, or the main body frame portion 3 is attached to a building material such as a pillar. It becomes possible to remove the back wall fixing portion 5 which becomes unnecessary when fixing to the side surface.

Further, the back wall fixing portion 5 is brought into contact with the front side surface of the back wall 1 and a fixing tool through hole 52 for fixing the back wall fixing portion 5 to the front side surface of the back wall 1 with the fixing tool 51 is formed. Part 53,
A locking portion 54 which is continuously provided from the contact portion 53 and is locked to the main body frame portion 3, and the locking portion 54 of the back wall fixing portion 5 can be locked to the main body frame portion 3 It is preferable to provide the part 35. With such a configuration, the rear wall fixing portion 5 can be freely attached from either the inside of the opening 31 formed in the main body frame 3 or from the outside of the main body frame 3. When the body frame 3 is fixed to the front surface of the back wall 1, the back cover is mounted on the back side of the opening 31 of the body frame 3 by mounting the back wall fixing portion 5 outside the body frame 3. When the back wall fixing portion 5 is attached to the outside of the main body frame portion 3 due to possible obstacles or some obstacles, the back wall 1
When the main frame 3 cannot be attached to the front surface of the rear frame 1, the main frame 3 can be attached to the front surface of the rear wall 1 by attaching the rear wall fixing portion 5 inside the opening 31 of the main frame 3. In addition, it is possible to make one type of back wall fixing portion 5 correspond to a plurality of types of wiring device mounting members 2, and to design / design a new wiring device mounting member 2.
Manufacturing costs can be kept low.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

The wiring device mounting member 2 according to the present invention is disposed in a wall opening provided in an interior wall of a building, and a wiring device is mounted on the wiring device mounting member 2, and the wiring device is attached to the wiring device behind the interior wall. This is for connecting the electric wires in the arranged flexible conduit.

The interior wall of the building is a plate-like wall material formed of gypsum board of a certain thickness, which faces the room, and the back side of the interior wall (that is, the side opposite to the room) is the building wall. And a pillar to which the interior wall is attached is arranged, and a concrete back wall 1 is further arranged behind the pillar.

The back wall 1 is a concrete wall material having a flat front side surface, and a plurality of columns are arranged on the front side (ie, indoor side). The columns each have a substantially rectangular horizontal cross section, and the front surfaces of the plurality of columns are arranged so as to be located on the same plane parallel to the front surfaces of the back wall 1. And the above-mentioned interior wall is attached to the front side of a plurality of pillars,
Furthermore, in the gap formed between the interior wall and the back wall 1,
A flexible conduit having an electric wire inserted therein is provided.

The interior wall is provided with a substantially rectangular wall opening which communicates between the front side and the back side of the interior wall and is long in the vertical direction when viewed from the front (that is, when viewed from the front side to the back side of the interior wall). Then, the wiring device mounting member 2 is fixed to the front side surface of the back wall 1 corresponding to the wall opening.

The wiring device mounting member 2 is mainly composed of a main body frame 3 having a substantially rectangular frame shape when viewed from the front. Body frame 3
Is a substantially rectangular frame having an outer shape that is substantially the same shape and size as a wall opening edge provided on the interior wall in a front view, and has a substantially rectangular opening 31 in a front view in which wiring devices are provided. At the edge of the opening 31, there is provided a wiring device mounting portion 32 for mounting the wiring device to the body frame 3.

The wiring device attachment portion 32 is provided at the center of the upper side and the lower side of the edge of the opening 31 formed in the main body frame portion 3 so as to project toward the inside of the opening 31 as a substantially cylindrical shape which is long in the front-rear direction. A screwing hole 32a into which a fixing tool 51 for attaching a wiring device is screwed is drilled from the front side inside the wiring device attachment portion 32.

Further, the main body frame 3 is provided with a tube holding portion 33 for holding a flexible electric conduit at one end of the upper and lower horizontal pieces of the main body frame 3. The tube holding portion 33 has a substantially U-shaped semi-cylindrical shape that opens rearward in a plan view, and protrudes upward from one side end of the upper horizontal piece of the main body frame portion 3, and projects downward. It protrudes downward from the same side end of the piece. The tube holding portion 33 holds the flexible conduit provided on the back side of the interior wall in the main body frame portion 3.
3 is fitted into the substantially U-shaped opening 33a.

Further, on both sides of the main body frame 3, there are provided construction material fixing portions 4 which are fixed to columns provided on the back side of the interior wall. The construction material fixing portion 4 is formed with a construction material contact portion 41 which is in contact with a side surface of the pillar perpendicular to the interior wall, and is fixed to the construction material contact portion 41 in a longitudinal direction. The tool insertion hole 42 is perforated.

The construction material abutting portions 41 are formed as protrusions long in the front-rear direction at three positions in the vertical direction on the outer surfaces on both sides of the main body frame portion 3, and the protrusions of the protrusions are columns of the construction material. The construction material contact surface 43 is in contact with the side surface. By providing the building material abutting portion 41 in the main body frame portion 3 in this way, the building material abutting portion 41 abuts on a side surface of the pillar arranged on the back side of the interior wall, which is perpendicular to the interior wall. When it is fixed
The main body frame 3 can be arranged along the opening edge of the interior wall, and further, by providing the construction material abutting portions 41 on both sides of the main body frame 3, pillars are provided on the interior wall. Even if it is located on either the left or right side of the back side of the wall opening, it becomes possible to abut and fix the construction material contact portion 41 to the side surface of the pillar as described above. In the construction material abutting portion 41, a fastener insertion hole 42 long in the front-rear direction that communicates between the inside of the opening 31 formed in the main body frame portion 3 and the outside of the construction material abutting surface 43 is formed. is there. To fix the main body frame 3 to the pillar, the construction material contact surface 43 of the construction material contact part 41 provided on the main body frame 3 is brought into contact with the side surface of the pillar, and the fixing tool 51 is fixed inside the main body frame 3. This is performed by inserting into the fixing tool insertion hole 42 from the opening 31 side formed and screwing it to the side surface of the pillar. However, since the fixing tool insertion hole 42 is long in the front-rear direction, the inside of the fixing tool insertion hole 42 is It is possible to insert the fixing tool 51 at an arbitrary position in the front-rear direction and screw it to the column.

Further, on both sides of the main body frame portion 3, back wall fixing portions 5 fixed to the back wall 1 on the back side of the interior wall are provided detachably. The rear wall fixing portion 5 includes a contact portion 53 that contacts the front surface of the rear wall 1 and a main body frame portion 3 that is protruded from the contact portion 53.
And a locking portion 54 that is locked in the fixing tool insertion hole 42 of the building material fixing portion 4.

The contact portion 53 has a substantially rectangular shape as viewed from the front and has a back surface serving as a contact surface 55 that contacts the front surface of the back wall 1.
At a substantially central portion in a front view, a circular fixing tool through hole 52 is formed. The main body frame 3 is provided on the main body frame 3 side of the contact portion 53.
A locking portion 54 is provided to be locked. Locking part 54
Has a substantially U-shape that opens rearward in plan view, and when the back wall fixing portion 5 is locked to the main body frame portion 3, the tip end 54 a of the locking portion 54 is fixed to the building material of the main body frame portion 3. It is inserted into the fixing tool insertion hole 42 of the part 4, and the inner deep portion 54 b of the opening of the substantially U-shaped locking part 54 is fitted into the rear end of the fixing tool insertion hole 42. That is, in the present embodiment, the locked portion 3 on the side of the main body frame 3 to which the locking portion 54 of the back wall fixing portion 5 is locked.
5 is also used as a fixing tool insertion hole 42 for fixing the main body frame 3 to the construction material.
The manufacturing process of the main body frame 3 and the like can be simplified. When the rear wall fixing portion 5 is locked to the main body frame portion 3, the locking portion 54 of the rear wall fixing portion 5 is formed from the inside of the opening 31 of the main body frame portion 3 or the construction material contact surface of the main body frame portion 3. It is possible to insert and lock into the fixing tool insertion hole 42 of the main body frame 3 from any side from the outside of the frame 43. By doing this,
When the main body frame 3 is fixed to the front side surface of the rear wall 1, a rear cover (see FIG. 1) is provided on the rear side of the opening 31 of the main body frame 3 to prevent electric wires and the like connected to wiring equipment from coming into contact with the rear wall 1. (Not shown), the back wall fixing portion 5 may be attached to the outside of the main body frame portion 3, and the back wall fixing portion 5 may be attached to the main body frame portion 3 in the presence of some obstacle. If the main frame 3 cannot be mounted on the front side of the rear wall 1 when mounted on the outside, the rear wall fixing portion 5 is mounted inside the opening 31 of the main frame 3 so that the main frame 3 can be mounted on the rear wall 1. It can be attached to the front side. Also,
As described above, the locking portion 54 is fixed to the fixing tool insertion hole 4 of the main body frame 3.
2 and the rear wall fixing portion 5 is attached to the main body frame 3, the contact surface 55 of the rear wall fixing portion 5 is substantially flush with the rear surface of the main body frame 3. Since the rear wall fixing portion 5 is attached to the main body frame portion 3 and is in contact with the front side surface of the rear wall 1, the fixing tool 51 is inserted into the fixing through hole 52 formed in the contact portion 53. Is inserted and screwed to the front side surface of the back wall 1, whereby the main body frame 3 can be fixed to the front side surface of the back wall 1.

In order to dispose the wiring device mounting member 2 having the above-described configuration at the wall opening of the interior wall, the main body frame 3 is fixed to the side surface of a construction material such as a pillar disposed on the back side of the interior wall. Alternatively, there are two methods of fixing the main body frame portion 3 to the front side surface of the back wall 1 provided on the back side of the interior wall.
Since the method is the same as that of the conventional example as shown in FIG.

In order to fix the main body frame 3 of the wiring device mounting member 2 to the front side surface of the rear wall 1 provided on the back side of the interior wall, first, two rear wall fixing portions 5 are attached to the main body frame 3. Attach to both sides of. As described above, the distal end 54a of the locking portion 54 protruding from the rear wall fixing portion 5 is inserted into the fixing tool insertion hole 42 of the construction material fixing portion 4 of the main body frame portion 3 to form a substantially U-shape. Of the locking portion 54 is fitted into the fixing member insertion hole 42 so as to abut the rear end of the fixing member insertion hole 42. It should be noted that the number of the rear wall fixing portions 5 attached to the main body frame 3 is not limited to two, but may be one. Next, the main body frame portion 3 to which the rear wall fixing portion 5 is attached is brought into contact with the front side surface of the rear wall 1 corresponding to the wall opening of the interior wall. Then, the fixing tool 51 is inserted into the fixing tool through hole 52 of the rear wall fixing part 5 from the front side and screwed to the front surface of the rear wall 1, and the rear wall fixing part 5 is fixed to the front surface of the rear wall 1.
Thereafter, the end of the flexible conduit is connected to the tube holding portion 33 of the main body frame 3.
, A flexible conduit is mounted, a wiring device is attached to the wiring device mounting member 2, and an electric wire in the flexible conduit is connected to the wiring device.

According to this configuration, the wiring device mounting member 2
When arranging the rear wall fixing portion 5 in the wall opening provided in the interior wall, the rear wall fixing portion 5 is detachably attached to the main body frame portion 3, and the rear wall fixing portion 5 is fixed to the front side surface of the rear wall 1 with the fixing tool 51. By doing so, the main body frame 3 can be fixed to the back wall 1, and even if no building material such as a pillar is disposed near the back side of the wall opening of the interior wall where the wiring device mounting member 2 is disposed. The wiring device mounting member 2 can be arranged in the wall opening so that the frame portion 3 is along the edge of the wall opening. In particular, even when there is no construction material such as a pillar on the back side of the interior wall, as in the so-called GL construction method in which an interior wall formed of a gypsum board is disposed on the front side of a concrete back wall 1 with a gap therebetween, there is no main body frame. The wiring device mounting member 2 can be disposed at the wall opening such that the connector 3 extends along the wall opening edge. When the main body frame 3 is fixed to the side of a building material such as a pillar behind the wall opening, the rear wall fixing portion 5 projects outward from the main body frame 3 so as not to be obstructed. By detaching the wall fixing portion 5, the building material fixing portion 4 of the main body frame 3 can be fixed to the side surface of the building material such as a pillar. Furthermore, since the detachable inner wall fixing portion 5 can be simply attached to the conventional wiring instrument mounting member 2 'to form the wiring instrument mounting member 2 of the present invention, in this case, a new wiring instrument mounting member 2 is required. The design and manufacture need only be performed on the detachable back wall fixing portion 5, and can be applied to a plurality of types of wiring device mounting members 2 such as one wiring device mounting, two wiring device mounting, and three wiring device mounting. It is also possible to make the same back wall fixing portion 5 correspond to the design and design of a new wiring device mounting member 2.
Manufacturing costs can be kept low. Further, the back wall fixing portion 5 is provided from the inside of the opening 31 of the main body frame 3 or the main body frame 3.
Can be attached to the main body frame 3 from any side from the outside of the construction material abutting surface 43. By attaching the back wall fixing portion 5 to the outside of the main body frame 3, the rear cover can be attached to the main body frame. It can be attached to the back side of the opening 31 of the part 3.

Next, another embodiment will be described with reference to FIG. This embodiment is basically the same as the above embodiment, and mainly different points will be described. In the case of the present embodiment, the back wall fixing portion 5 is connected to the opening 31 formed in the main body frame 3.
Are provided integrally with the main body frame 3 at the four corners inside.

In the back wall fixing portion 5 of this embodiment, contact portions 53 having a substantially square shape as viewed from the front are integrally provided at four corners inside the opening 31 of the main body frame portion 3 toward the inside of the opening 31. The contact portion 53 is provided with a fixing tool through-hole 52 for fixing the rear wall fixing portion 5 to the front surface of the rear wall 1 as in the above embodiment. No unnecessary locking portion 54 is provided because the locking portion 54 is provided integrally with the device 3. Since the abutment portion 53 in the present embodiment is smaller than the back wall fixing portion 5 in the above embodiment, the inside of the opening 31 of the main body frame portion 3 is widely used even if it protrudes toward the inside. be able to.

The contact portion 53 may be formed integrally with the body frame 3 so as to protrude toward the outside of the body frame 3. In this case, the back side of the opening 31 of the body frame 3 is provided. It is also possible to attach a back cover to the vehicle.

[0029]

As described above, according to the first aspect of the present invention, the wall opening provided on the interior wall fixed to the construction material such as a pillar or the back wall disposed on the back side of the interior wall. A wiring device mounting member to be disposed in the main body frame portion having an opening in which the wiring device is disposed, the main body being formed, and the main body frame portion being disposed in the opening formed in the main body frame portion. A construction material which is provided with a wiring device attachment portion for attaching a wiring device, and which is fixed to a side surface of the body frame portion on a side surface of the construction material so that the body frame portion can be arranged along the wall opening edge. Since the fixing portion is provided, and at least one side portion of the main body frame portion is fixed to the front side surface of the rear wall, the main frame portion is provided along the wall opening edge, so that the rear wall fixing portion is provided. The main body frame is fixed to the side of the construction material such as pillars arranged on the back side of the interior wall, and the wiring device mounting member is arranged at the wall opening In addition to this, it is possible to fix the main body frame to the front side of the back wall provided behind the interior wall, and to arrange the wiring device mounting member at the wall opening. The work of fixing the main body frame portion can be performed according to the situation at the site.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the rear wall fixing portion is detachable from the main body frame, so that the main body frame can be mounted on the rear wall. It is possible to attach the back wall fixing part to the main body frame part when fixing it to the front side surface of the body, and to remove the unnecessary back wall fixing part when fixing the main body frame part to the side surface of construction materials such as pillars It is what becomes.

According to a third aspect of the present invention, in addition to the effects of the second aspect, the back wall fixing portion is brought into contact with the front side surface of the back wall and is fixed by the fixing tool. An abutting portion having a through hole for fastening to be fixed to the side surface, and an engaging portion which is continuously provided from the abutting portion and is engaged with the main body frame portion. The locking portion of the fixing portion is provided with a locked portion that can be locked, so that the rear wall fixing portion can be freely attached from either the inside of the opening formed in the main body frame portion or from the outside of the main body frame portion. When the body frame is fixed to the front side of the back wall, the back cover is attached to the back side of the opening of the body frame by attaching the back wall fixing part to the outside of the body frame. When the back wall fixing part is attached to the outside of the body frame part due to some obstacles, When not attached to the frame portion,
By attaching the back wall fixing part inside the opening of the main body frame part, it becomes possible to attach the main body frame part to the front side surface of the back wall. It is possible to correspond to the wiring device mounting member, and it is possible to reduce the design and manufacturing cost of a new wiring device mounting member.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIGS. 2A and 2B show a back wall fixing portion of the above embodiment, wherein FIG. 2A is a side view on the opposite side to the locking portion, FIG. 2B is a plan view, and FIG. (D) is a bottom view,
(E) is a side view of the locking portion side.

3A and 3B show a back wall fixing portion of the embodiment, FIG. 3A is a rear view, FIG. 3B is a sectional view taken along line AA of FIG.
(C) is a BB cross-sectional view of (a), (d) is (a)
(E) is a DD sectional view of (a).

FIG. 4 is a perspective view of another embodiment of the present invention.

FIG. 5 is a view showing a state of attachment to a building material according to a conventional example.

FIG. 6 is a perspective view of the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 back wall 2 wiring device attachment member 3 main body frame portion 31 opening 32 wiring device attachment portion 35 locked portion 4 construction material fixing portion 5 back wall fixing portion 51 fixing tool 52 fixing tool through hole 53 contact portion 54 locking Department

Claims (3)

[Claims] 1. A wiring device mounting member fixed to a building material such as a pillar or a back wall disposed on the back side of an interior wall and disposed in a wall opening provided in the interior wall, wherein the wiring device is disposed. A main body is formed by a main body frame portion having an opening formed therein, and a main body frame portion is provided with a wiring device attachment portion for mounting a wiring device provided in the opening formed in the main body frame portion, A side wall of the building material is provided with a building material fixing portion that is fixed to a side surface of the building material so that the main body frame portion can be disposed along the wall opening edge. At least one side of the main body frame portion has the back wall. A wiring device mounting member comprising a back wall fixing portion which is fixed to a front side surface so that a main body frame portion can be disposed along the wall opening edge. 2. The wiring device mounting member according to claim 1, wherein the back wall fixing portion is detachable from the main body frame portion. 3. An abutting portion in which an inner wall fixing portion abuts on a front side surface of the inner wall and a fixing tool through-hole for fixing the inner wall fixing portion to the outer side surface of the inner wall with an anchor is provided. The main body frame is provided with a locked portion that can be locked by the locking portion of the back wall fixing portion. The wiring device mounting member according to claim 2, wherein