Wiring accessory installation tool, ruling tool, and wiring accessory installation device

Abstract

To provide a wiring accessory installation tool capable of more stably installing a wiring accessory to a wall, or more accurately installing them.SOLUTION: A wiring accessory installation tool comprises: an insertion part inserted into a wall back side; a device holding part; a wall front side contact part that is contacted to a wall surface side peripheral edge of a penetration hole; a wall back side contact part that is contacted to a wall back side peripheral edge of a penetration hole; and a positioning mechanism for positioning a reference point of a wiring accessory installation tool so as to be matched to a virtual reference point predetermined in a formation range of the penetration hole. The positioning mechanism comprises: a first positioning part that is for positioning a first ruling mark overlapped with a first virtual line passing a virtual reference point; and a second positioning part that is for positioning a second ruling mark overlapped with a second virtual line passing the virtual reference point orthogonal to the first virtual line. The first ruling mark, the first positioning part, the second ruling mark, and the second positioning part are positioned at the same time, and then, the virtual reference point and the reference point are matched, and an installation position of the wiring accessory installation tool is defined.SELECTED DRAWING: Figure 13

Description

Technical Field

[0001] The present invention relates to a wiring device installer, a grid drawing tool, and a wiring device installation apparatus for installing a wiring device on a wall.

Background Art

[0002] Conventionally, when installing a wiring device such as a switch or a power outlet at a predetermined position on the wall surface of a structure, a through hole is formed in the wall, and the wiring device is attached through the through hole. Generally, the wiring device is connected to a wiring cable behind the wall and installed so as to be exposed toward the wall surface. And various wiring device installers are used to fix the wiring device to the wall through the through hole.

[0003] Patent Document 1 discloses a holding plate (wiring device installation tool) used for attaching wiring devices such as switches and outlets to a wall hole (through hole). Hereinafter, in this paragraph, the reference numerals in Patent Document 1 are shown in parentheses. The holding plate member (1) of Patent Document 1 is formed by assembling a holding frame (1a) and a decorative cover (1b). First, the holding frame (1a) is integrally formed with a peripheral wall portion (2) formed in a cylindrical shape with a predetermined length to accommodate a wiring device (11) inside, and a substantially square plate-shaped flange portion (3) provided on the front surface thereof. The peripheral wall portion (2) is provided with a cable lead-out hole (4) for leading out a cable (12) on the bottom surface side opposite to the flange portion (3), and has a guide groove (5) formed with a recess communicating in the length direction. Inside the guide groove (5), a screw (13) inserted from the front side of the flange portion (3) can be accommodated. Further, a mounting hole (6) is formed in a square shape at the central portion of the flange portion (3) so that the mounted wiring device (11) faces the front side of the wall (14), and a holding portion (7) composed of a locking hole, a locking piece, etc. for locking and mounting the locking protrusion (11a) of the wiring device (11) is provided at the left and right edge portions of the mounting hole (6). The screw (13) is inserted into the screw mounting hole (8). And a clamping piece (15) is screwed to the tip of the screw (13) inserted into the guide groove (5). The clamping piece (15) has at least the side facing the flange portion (3) parallel to the flange portion (3). To attach the holding plate member (1), first, the clamping piece (15) is tilted to the left at the bottom surface of the peripheral wall portion (2) so as not to protrude outward from the outer periphery of the peripheral wall portion (2), that is, in a state within the diameter of the wall hole (14a). Then, the peripheral wall portion (2) of the holding plate member (1) is inserted into the wall hole (14a), and the screw (13) is rotated. Then, the clamping piece (15) rises to the right following the screwing of the screw (13) and protrudes from the outer peripheral surface of the peripheral wall portion (2). After being stopped from further rotation by the right peripheral wall of the slightly protruding guide groove (5), it is screwed toward the flange portion (3) while being stopped from rotating by the right peripheral wall of the guide groove (5) as the screw (13) is screwed. And the clamping piece (15) is pressed against the back of the wall, and the wall (14) is clamped and fixed by the flange portion (3) and the flat portion of the clamping piece (15).

Prior Art Documents

Patent Document

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The holding plate (wiring fixture mounting tool) of Patent Document 1 is configured such that a user applies the holding plate to the wall surface so as to cover the wall hole (through hole) from the wall surface and then operates the clamping pieces from the wall surface, and the flange portion of the holding plate and the clamping pieces clamp the wall. However, in the conventional holding plate, when positioning the holding plate, once the user applies the holding plate to cover the wall hole, the user cannot accurately grasp the range of the wall hole, so it is not configured to accurately determine the relative position of the holding plate with respect to the wall hole. Therefore, for example, if the center of the holding plate is displaced from the center position of the wall hole, the holding plate may be biased to one side of the wall hole, and there is a risk that the clamping of the wall by some of the plurality of clamping pieces becomes insufficient. As a result, there was a problem that the wiring fixture could not be stably fixed to the wall in some cases. Also, it is also a problem that the actual installation position is displaced from the planned installation position preset on the wall surface at the design stage.

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a wiring fixture mounting tool, a grid drawing tool, and a wiring fixture installation that enable more stable installation or more accurate installation of a wiring fixture on a wall.

Means for Solving the Problems

[0007] The wiring fixture mounting tool according to claim 1 is a wiring fixture mounting tool for installing a wiring fixture with respect to a through hole formed in a wall, comprising: an insertion portion inserted into the back side of the wall; an instrument holding portion that holds at least a part of the wiring fixture in a state where the front surface of the wiring fixture is exposed on the front side of the wall; a wall surface side contact portion that contacts the periphery on the wall surface side of the through hole; a wall back side contact portion that contacts the periphery on the wall back side of the through hole and, in cooperation with the wall surface side contact portion, sandwiches the wall at the periphery of the through hole; an alignment mechanism that aligns a reference point of the wiring device installer with a virtual reference point predetermined within a formation range of the through hole on a virtual plane along the wall surface, based on a planned installation position of the wiring device; and the alignment mechanism includes a first alignment portion for aligning with a first ruled mark that extends in a first direction on the virtual plane and overlaps a first virtual straight line passing through the virtual reference point; a second alignment portion for aligning with a second ruled mark that extends in a second direction orthogonal to the first direction on the virtual plane and overlaps a second virtual straight line passing through the virtual reference point; and by simultaneously aligning the first ruled mark and the first alignment portion and the second ruled mark and the second alignment portion, the virtual reference point and the reference point coincide, and an installation position of the wiring device installer is determined.

[0008] The wiring device installer according to claim 2, wherein in the wiring device installer according to claim 1, the virtual reference point is determined at a vertical and horizontal center position of an overall shape exposed on the wall surface side of the wiring device when the wiring device is installed in the through hole.

[0009] The wiring device installer according to claim 3, wherein in the wiring device installer according to claim 1, the first ruled mark and the second ruled mark are each formed at two locations sandwiching the through hole.

[0010] The wiring device installer according to claim 4, wherein in the wiring device installer according to any one of claims 1 to 3, the wall surface side contact portion is formed from a contact surface having an annular shape, and the first alignment portion and the second alignment portion are provided on the wall surface side contact portion.

[0011] The wiring fixture mounting tool according to claim 5 is the wiring fixture mounting tool according to claim 4, further comprising a mounting tool body having the fixture holding portion and the wall front side contact portion, and a drive mechanism that operates to relatively draw the wall front side contact portion and the wall back side contact portion toward each other through the wall by an operation from the wall front side, and sandwich the wall between the wall front side contact portion and the wall back side contact portion. The mounting tool body is formed with a decorative plate mounting portion for attaching a decorative plate that covers a gap between the mounting tool body and the periphery of the through hole, which constitutes a part of the wiring fixture to be installed.

[0012] The wiring fixture mounting tool according to claim 6 is the wiring fixture mounting tool according to claim 4, wherein the fixture holding portion has a fixing portion to which a fixture frame of the wiring fixture is fixed.

[0013] The wiring fixture mounting tool according to claim 7 is the wiring fixture mounting tool according to any one of claims 1 to 3, further comprising a mounting tool body having the fixture holding portion and the wall front side contact portion, and an insertion body having the insertion portion and the wall back side contact portion, and a drive mechanism that operates to relatively draw the mounting tool body and the insertion body toward each other through the wall by an operation from the wall front side, and sandwich the wall between the mounting tool body and the insertion body. The first alignment portion is provided on the mounting tool body, and the second alignment portion is provided at a position where it can be visually recognized from the wall front side of the insertion body through the through hole.

[0014] The ruling tool according to claim 8 is a ruling tool for forming a ruling mark on a wall surface when forming a through hole for installing a wiring fixture on the wall, and a reference alignment portion that is aligned with a virtual reference point predetermined within a formation range of the through hole on a virtual plane along the wall surface in order to position the ruling tool at a ruling position. A first index portion for attaching a first ruled mark that overlaps a first virtual straight line extending in a first direction on the virtual plane and passing through the virtual reference point to a position outside at least the formation range of the through hole on the wall surface; A second index portion for attaching a second ruled mark that overlaps a second virtual straight line extending in a second direction orthogonal to the first direction on the virtual plane and passing through the virtual reference point to a position outside at least the formation range of the through hole on the wall surface; A decorative plate display portion for displaying an installation range of a decorative plate attached to the wiring fixture installed on the wall surface side in a state where the reference alignment portion is aligned with the virtual reference point. It is characterized by comprising the above.

[0015] The ruled tool according to claim 9, wherein, in the ruled tool according to claim 4, the first index portion and the second index portion are arranged so as to be within the installation range of the decorative plate.

[0016] The wiring fixture installation device according to claim 10 is a wiring fixture installation device for forming a through hole at a predetermined position on a wall and installing a wiring fixture with respect to the through hole, The ruled tool according to claim 8 or 9, The wiring fixture installation tool according to any one of claims 1 to 3, and is characterized by comprising the above.

Effect of the Invention

[0017] According to the wiring fixture installer described in claim 1, by using the alignment mechanism, the relative position of the wiring fixture with respect to the through hole can be appropriately determined by aligning a predetermined reference point on the wiring fixture installer with a virtual reference point within the range of the through hole on a virtual plane along the wall surface. Note that the virtual reference point is a point serving as a reference on a virtual plane along the wall surface, which is predetermined based on the planned installation position of the wiring fixture. Also, the reference point is a location defined to be installed on the virtual reference point and referenced on the wiring fixture installer with respect to the virtual reference point. These virtual reference points on the wall surface and the reference points on the wiring fixture installer can be appropriately selected based on the planned installation position of the preset wiring fixture on the wall surface. And the alignment mechanism is provided with a first alignment portion and a second alignment portion. The first alignment portion is configured to be alignable with a first ruled mark overlapping a first virtual straight line passing through the virtual reference point, and the second alignment portion is configured to be alignable with a second ruled mark overlapping a second virtual straight line (orthogonal to the first virtual straight line) passing through the virtual reference point. The user operates the wiring fixture installer from the wall surface side to simultaneously align the first ruled mark and the first alignment portion with the second ruled mark and the second alignment portion, thereby matching the virtual reference point and the reference point, and determining the relative installation position of the wiring fixture installer with respect to the through hole. That is, the alignment mechanism arranges the wiring fixture installer at a desired installation position (where the reference point and the virtual reference point coincide) with respect to the range of the through hole, and as a result, enables the wiring fixture to be installed at the preset planned installation position on the wall surface. And by appropriately setting the reference point and the virtual reference point and using the alignment mechanism, it becomes easy to position and install the wiring fixture installer without being offset with respect to the range of the through hole so that the wall surface side contact portion and the wall back side contact portion reliably contact the periphery of the through hole. Therefore, the wiring fixture installer of the present invention can more accurately install the wiring fixture at the preset planned installation position on the wall surface and enables more stable installation of the wiring fixture on the wall.

[0018] According to the wiring fixture installer described in claim 2, in addition to the effects of the invention of claim 1, by determining the virtual reference point at the center position in the vertical and horizontal directions of the overall shape exposed on the wall surface side of the wiring fixture when the wiring fixture is installed in the through hole, the user can easily grasp the relationship between the virtual reference point and the planned installation position of the wiring fixture.

[0019] According to the wiring fixture installer described in claim 3, in addition to the effects of the invention of claim 1, since the first ruled marks and the second ruled marks are respectively formed at two locations sandwiching the through hole, it is possible to more accurately align the wiring fixture installer. Furthermore, even if one of the ruled marks is unclear or difficult to see, it is possible to perform alignment using the other ruled mark.

[0020] According to the wiring fixture installer described in claim 4, in addition to the effects of any of the inventions of claims 1 to 3, since the first alignment portion and the second alignment portion are provided on the wall surface side contact portion forming an annular contact surface, the user can easily align the first ruled mark and the second ruled mark with the first alignment portion and the second alignment portion respectively by visual inspection from the wall surface side.

[0021] According to the wiring fixture installer described in claim 5, in addition to the effects of the invention of claim 4, by operating the drive mechanism from the wall surface side, the wall surface side contact portion and the wall back side contact portion are relatively drawn closer through the wall, and the wiring fixture installer can be easily fixed to the wall. Furthermore, since a decorative plate mounting portion (as a fixture holding portion) for mounting a decorative plate constituting a part of the wiring fixture is formed on the installer main body, by positioning and fixing the wiring fixture installer, it is possible to provide the decorative plate at a preset planned installation position on the wall surface.

[0022] According to the wiring fixture installer described in claim 6, in addition to the effects of the invention of claim 4, by fixing the fixture frame of the wiring fixture to the fixing portion, the wiring fixture can be easily installed.

[0023] According to the wiring fixture installer described in claim 7, in addition to the effects of the invention according to any one of claims 1 to 3, by operating the drive mechanism from the wall surface side, the installer main body and the insert body can be relatively drawn closer to each other through the wall, and the wiring fixture installer can be easily fixed to the wall. Further, by aligning the first alignment portion provided on the wall surface side contact portion with the first ruled mark and visually observing the second alignment portion on the back side of the wall through the through hole from the wall surface side, it is possible to align the second alignment portion with the second ruled mark.

[0024] According to the ruling tool described in claim 8, by aligning the reference alignment portion with a predetermined virtual reference point within the formation range of the through hole on the virtual plane along the wall surface, the ruling tool is arranged at the ruling position for ruling the first and second ruled marks on the wall surface that enable positioning of the wiring fixture installer. Then, in a state where the ruling tool is aligned and applied to the wall surface, using the first indicator portion, a first ruled mark overlapping a first virtual straight line passing through the virtual reference point is applied outside at least the formation range of the through hole on the wall surface, and using the second indicator portion, a second ruled mark orthogonal to the first virtual straight line and overlapping a second virtual straight line passing through the virtual reference point is applied outside at least the formation range of the through hole on the wall surface. After forming a through hole in the wall, it becomes possible to determine the relative installation position of the wiring fixture installer with respect to the through hole using the first and second ruled marks applied outside at least the range of the through hole. Further, the user can grasp the installation range of the decorative plate on the wall surface by the decorative plate display portion. By knowing the installation range of the decorative plate, it is possible to prevent the ruled marks from being applied so as to protrude outside the installation range of the decorative plate. That is, the ruling tool enables the first and second ruled marks to be applied to the wall surface without exposing the ruled marks, and assists in positioning and installing the wiring fixture installer without being offset with respect to the formation range of the through hole. Therefore, the ruling tool of the present invention contributes to more accurately providing the decorative plate and the wiring fixture at the preset planned installation positions on the wall surface and enabling more stable installation of the wiring fixture on the wall.

[0025] According to the ruled writing tool described in claim 9, in addition to the effects of the invention of claim 8, since the first index portion and the second index portion are arranged so as to be within the installation range of the decorative cover, it becomes easy to attach ruled writing marks at appropriate positions outside the formation range of the through-hole and within the installation range of the decorative cover.

[0026] According to the wiring device installation apparatus described in claim 10, by using in combination the ruled writing tool described in claim 8 or 9 and the wiring device installation tool described in any one of claims 1 to 3, it is possible to exhibit the above effects as a wiring device installation apparatus. That is, after attaching the first and second ruled writing marks to the wall surface using the ruled writing tool, the wiring device installation tool can be attached to the wall in a state where the installation position with respect to the through-hole is accurately positioned using the first and second ruled writing marks. Therefore, the wiring device installation apparatus of the present invention can accurately install the wiring device at a preset planned installation position on the wall surface and enables more stable installation of the wiring device on the wall.

Brief Description of the Drawings

[0027]

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Embodiments for Carrying Out the Invention

[0028] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the shapes of the respective figures referred to in the following description are conceptual diagrams or schematic diagrams for explaining suitable shape dimensions, and the dimensional ratios etc. do not necessarily match the actual dimensional ratios. That is, the present invention is not limited to the dimensional ratios in the drawings. Also, the up-down, left-right directions in the present invention are merely concepts indicating relative positions, and it goes without saying that these can be interchanged and applied.

[0029] [First Embodiment] The wiring fixture installer 100 of an embodiment (first embodiment) of the present invention is attached to a through-hole 12 formed at a predetermined position of a wall 11 of a building or the like, and holds the wiring fixture 15 exposed on the wall surface side, thereby being a fixture for installing the wiring fixture 15 with respect to the through-hole 12. Also, the wiring fixture installer 100 is illustrated in a simplified form for convenience of explanation, but may include a wiring fixture, a fixture frame for holding the fixture body of the wiring fixture, a decorative plate disposed on the front surface of the fixture frame, and / or a decorative plate mounting frame for fixing the decorative plate to the fixture frame. On the other hand, the grid marking tool 150 of an embodiment of the present invention is a tool for forming a through-hole 12 for installing the wiring fixture 15 at a predetermined position of the wall 11. And the wiring fixture installation device of an embodiment of the present invention is composed of the wiring fixture installer 100 and the grid marking tool 150, and is a device for installing the wiring fixture 15 on the wall. Also, in the present embodiment, the structure in which the wiring fixture 15 is installed with respect to the through-hole 12 of the wall 11 is defined as the fixture installation structure 10. Note that in this specification, the wiring fixture 15 is composed of a fixture body 15a and a fixture frame 15b for holding the fixture body 15a. Also, in the present embodiment, the wiring fixture 15 is illustrated as a fixture into which a power plug is inserted, but any fixture such as a fixture into which a communication terminal is inserted or a fixture provided with a switch mechanism can be selected. Since the wiring fixture 15 is a general fixture, the description of its internal structure and wiring is simplified or omitted.

[0030] First, with reference to FIGS. 1 to 5, the wiring device installer 100 of the present embodiment will be described. FIGS. 1(a) and (b) are schematic perspective views of the wiring device installer 100 as viewed from the front and rear. FIGS. 2(a) and (b) are front and rear views of the wiring device installer 100. FIGS. 3(a) to (d) are a plan view, a left side view, a right side view, and a bottom view of the wiring device installer 100. FIG. 4 is a cross-sectional view taken along line A-A of the wiring device installer 100. FIG. 5 is a cross-sectional view taken along line B-B of the wiring device installer 100.

[0031] The wiring device installer 100 of the present embodiment is composed of an installer main body 101 in which a rectangular housing portion 101a having a front opening and a flange portion 101b extending in the outer peripheral direction on the opening side of the housing portion 101a are integrally formed, and a plurality (two in the present embodiment) of movable pieces 102 movably provided on the housing portion 101a of the installer main body 101. Here, the opening side of the housing portion 101a of the installer main body 101 is defined as the front (or the wall surface side), and the opposite side is defined as the rear (or the wall back side). Also, the vertical direction in FIG. 2 is defined as the longitudinal direction, and the horizontal direction is defined as the lateral direction.

[0032] The housing portion 101a has a dimensional shape that is partially disposed on the wall back side through the through-hole 12. In the present embodiment, the wiring portion of the wiring device 15 is accommodated in the housing portion 101a. Although not shown, for wall back wiring, a cut for the wiring to pass through may be formed in the side wall or the bottom wall of the housing portion 101a, or a punching hole or the like for the wiring to pass through may be formed in the bottom wall (rear surface) or the side wall of the housing portion 101a. Further, the flange portion 101b has a dimensional shape that can cover and close the through-hole 12 from the wall surface side. The outer peripheral edge of this flange portion 101b is configured to be able to fit the decorative plate 16. On the other hand, the movable piece 102 is movably held at a pair of opposing corner portions of the housing portion 101a and is made of a metal piece that abuts against the wall surface from the wall back side. The movable piece 102 is rotatable between a retracted position (see the solid line in FIG. 5) accommodated inside the housing portion 101a and a protruding position (see the virtual line in FIG. 5) protruding from the housing portion 101a so as to face the flange portion 101b. Further, the movable piece 102 is configured to be movable back and forth at the protruding position.

[0033] The wiring fixture mounting member 100 includes an insertion portion 103 to be inserted into the back side of the wall, a pair of mounting holes 105 as a fixture holding portion for holding the front surface of the wiring fixture 15 in an exposed state on the front side of the wall, a front side contact portion 107 that abuts on the peripheral edge on the front side of the wall of the through hole 12 formed in the wall 11, a back side contact portion 108 that abuts on the peripheral edge on the back side of the through hole 12 and, in cooperation with the front side contact portion 107, clamps the wall 11 at the peripheral edge of the through hole, a drive mechanism 109 that operates to relatively draw the front side contact portion 107 and the back side contact portion 108 closer to each other via the wall 11 by an operation from the front side of the wall so as to clamp the wall with the front side contact portion 107 and the back side contact portion 108, and an alignment mechanism for determining the installation position of the wiring fixture 15 (wiring fixture mounting member 100) on the wall surface. In the present embodiment, the insertion portion 103 and the back side contact portion 108 are provided on the side of the housing portion 101a of the mounting member main body 101, and the mounting holes 105 (fixture holding portion) and the front side contact portion 107 are provided on the side of the flange portion 101b of the mounting member main body 101. Further, the drive mechanism 109 is configured to drive the back side contact portion 108 closer to the front side contact portion 107.

[0034] As shown in FIGS. 1 and 4, the insertion portion 103 is provided in the housing portion 101a of the mounting member main body 101. This insertion portion 103 is a portion to be inserted (or disposed) into the back side of the wall through the through hole 12 and is defined as a part of the housing portion 101a of the mounting member main body 101. Specifically, the insertion portion 103 is the bottom wall of the housing portion 101a that protrudes from the through hole 12 to the back side of the wall and the portion in the vicinity thereof when the mounting member main body 101 is installed on the wall 11. The outer peripheral shape of the insertion portion 103 is smaller than the internal space (inner size) of the through hole 12 so as to be able to pass through the through hole 12.

[0035] As shown in Fig. 2, the pair of mounting holes 105 are formed at two positions sandwiching the opening of the flange portion 101b in the vertical direction, and are fixture holding portions for holding the front surface of the wiring fixture 15 (and the decorative plate 16) in a state of being exposed on the wall surface side. More specifically, the pair of mounting holes 105 are fixing portions for fixing the fixture frame 15b of the wiring fixture 15 with screws. Also, the pair of mounting holes 105 are formed on the vertical axis passing through the center in the lateral width direction of the outer shape of the installer main body 101. This pair of mounting holes 105 (or fixture holding portions) determine the installation range of the wiring fixture 15 to be held. In other words, according to the installation positions of the pair of mounting holes 105 on the wall surface, the installation positions of the wiring fixtures 15 held on the wall surface are determined.

[0036] Further, on the installer main body 101, a decorative plate mounting portion 106 for mounting a decorative plate 16 that covers the gap between the installer main body 101 and the periphery of the through hole 12, which forms a part of the wiring fixture to be installed, is formed. This decorative plate mounting portion 106 is the outer peripheral edge of the flange portion 101b into which the decorative plate 16 can be fitted. When the decorative plate 16 is attached to the decorative plate mounting portion 106, the vertical and horizontal center positions of the entire outer peripheral shape of the flange portion 101b coincide with the vertical and horizontal center positions of the entire outer peripheral shape of the decorative plate 16. And the vertical and horizontal center positions of the entire outer peripheral shape of the flange portion 101b also coincide with the midpoint of the vertical axis connecting the two mounting holes 105. In the present embodiment, when the wiring fixture 15 and the decorative plate 16 are held by the installer main body 101 (fixture holding portion), it is configured such that the midpoint of the vertical axis connecting the two mounting holes 105, the vertical and horizontal center positions of the entire outer peripheral shape of the flange portion 101b, and the vertical and horizontal center positions of the entire outer peripheral shape of the decorative plate 16 (which is a part of the wiring fixture) coincide. Note that the decorative plate mounting portion 106 may be formed in a configuration in which claws of the decorative plate are hooked on a surface portion (not the outer peripheral edge) of the flange portion 101b. That is, the decorative plate mounting portion 106 can be formed on the flange portion 101b in a well-known configuration in which the decorative plate can be attached.

[0037] The wall surface side contact portion 107 is formed on the rear surface of the flange portion 101b so as to contact the peripheral edge of the through hole 12 on the wall surface side. The wall surface side contact portion 107 forms a rectangular annular contact surface so as to contact substantially the entire circumferential direction of the periphery of the through hole 12. The wall back side contact portion 108 is formed on the front surfaces of a pair of movable pieces 102 movably provided on the housing portion 101a (insertion portion 103) of the installation tool main body 101 so as to contact the periphery from the wall back of the through hole 12. The wall back side contact portion 108 is configured to sandwich the wall 11 in the front-rear direction in a state where the movable piece 102 protrudes, as shown by the phantom lines in FIGS. 4 and 5, by the operation of the drive mechanism 109.

[0038] The drive mechanism 109 is provided at a corner of the housing portion 101a of the installation tool main body 101 and is configured to drive the wall back side contact portion 108 together with the movable piece 102 by the operation of the user. Specifically, the drive mechanism 109 includes an operation portion 109a formed on the front surface of the installation tool main body 101 and exposed on the wall surface side, and a rotation operation shaft 109b connected to the operation portion 109a and penetrating the installation tool main body 101 back and forth. Here, the operation portion 109a and the rotation operation shaft 109b are composed of a single screw held by the installation tool main body 101 in a state where it can rotate idly. That is, the operation portion 109a forms a screw head, and the rotation operation shaft 109b forms a screw shaft. The movable piece 102 is screwed onto the rotation operation shaft 109b with a rotational resistance, and thus rotates about the axis according to the rotation of the rotation operation shaft 109b and is driven to screw forward or backward in the front-rear direction in a state where its rotation is restricted. As shown in FIGS. 3 to 5, an opening 109c is formed at the rear end portion of the side wall of the housing portion 101a and is cut out in two directions across two adjacent surfaces. The opening 109c allows the movable piece 102 to rotate from the housing position to the protruding position. And, a movement path 109d that opens only in one direction of the side wall of the housing portion 101a is formed in front of the opening 109c. This movement path 109d allows the movable piece 102 to move in the front-rear direction while maintaining the movable piece 102 at the protruding position.

[0039] The operation of the movable piece 102 by the operation of the drive mechanism 109 is as follows. With the movable piece 102 in the retracted position, when the user rotates the operation part 109a in one direction from the front side with a tool such as a driver, the movable piece 102 rotates from the retracted position to the protruding position through the opening 109c along with the rotation of the rotation operation shaft 109b. At this protruding position, further rotation of the movable piece 102 is restricted by the side wall. When the user further rotates the operation part 109a in one direction with the tool, only the rotation operation shaft 109b rotates while the movable piece 102 is locked, and the movable piece 102 screws forward. That is, the user can pull the contact part 108 on the back side of the wall toward the contact part 107 on the front side of the wall by operating from the front side of the wall. Then, with the contact part 107 on the front side of the wall and the contact part 108 on the back side of the wall in contact with the wall 11, by operating the operation part 109a with a stronger torque, the wall 11 can be clamped between the contact part 107 on the front side of the wall and the contact part 108 on the back side of the wall, and the wiring device installer 100 can be fixed to the through hole 12 of the wall 11. On the other hand, when the user rotates the operation part 109a in the other direction, the movable piece 102 can be screwed backward and accommodated from the protruding position to the retracted position through the opening 109c.

[0040] The alignment mechanism is a mechanism for aligning the reference point C1 of the wiring device installer 100 with a virtual reference point C0 predetermined within the formation range of the through hole 12 on a virtual plane along the wall surface of the wall 11. The virtual reference point C0 and the reference point C1 are preset by the user. In the present embodiment, the virtual reference point C0 is set as the center points of the upper, lower, left, and right of the overall shape of the decorative plate 16 exposed on the front side of the wall at the planned installation position of the wiring device 15 preset on the wall surface. Also, the reference point C1 is set as the midpoint of the vertical axis connecting the two mounting holes 105 (or the center position of the vertical and horizontal of the overall outer peripheral shape of the flange portion 101b). That is, if the user can fix the wiring device installer 100 to the through hole 12 with the reference point C1 aligned with the virtual reference point C0, theoretically, it is possible to accurately install the wiring device 15 (and the decorative plate 16) at the predetermined planned installation position.

[0041] In order to fully exert the function of this alignment mechanism, as shown in FIGS. 12(c) and (d), on the wall surface, there are a first ruled line L1 (first ruling mark) that overlaps with a first virtual straight line L1' extending in the first direction on a virtual plane along the wall surface and passing through the virtual reference point C0, and a second ruled line L2 (second ruling mark) that overlaps with a second virtual straight line L2' extending in the second direction orthogonal to the first direction on the virtual plane and passing through the virtual reference point C0. In other words, the first ruled line L1 and the second ruled line L2 may be interpreted as part of the alignment mechanism. Here, it is preferable that the first direction is the vertical direction and the second direction is the horizontal direction. Further, the first ruled line L1 and the second ruled line L2 are preferably formed at two locations sandwiching the through hole 12, respectively. In the present embodiment, a linear ruled line is adopted as the ruling mark, but the ruling mark may be any mark such as a point or a scratch.

[0042] The alignment mechanism includes a first alignment portion 111 for aligning with the first ruled line L1 attached to the wall surface, and a second alignment portion 113 for aligning with the second ruled line L2. The first alignment portion 111 and the second alignment portion 113 are formed on the flange portion 101b of the fixture body 101 so as to be disposed outside the formation range of the through hole 12 when installed. That is, the first alignment portion 111 and the second alignment portion 113 are provided on the wall surface side contact portion 107. Further, the first alignment portion 111 and the second alignment portion 113 are respectively formed on the vertical axis and the horizontal axis that linearly pass through the reference point C1 (which is the intermediate position of the pair of mounting holes 105). Furthermore, the first alignment portion 111 and the second alignment portion 113 are formed on the front surface of the fixture body 101 so as to be exposed to the wall surface side. Specifically, the first alignment portion 111 consists of two slits respectively formed at the upper and lower edge portions on the vertical axis connecting the two mounting holes 105 in the flange portion 101b. The second alignment portion 113 consists of two slits respectively formed at the left and right edge portions on the horizontal axis that is orthogonal to the vertical axis and passes through the midpoint of the two mounting holes in the flange portion 101b. The slit is open in one direction. As will be described later, the user visually observes from the wall surface side, arranges the two first ruled lines L1 in the two slits of the first alignment portion 111, and arranges the two second ruled lines L2 in the two slits of the second alignment portion 113, whereby the reference point C1 can be aligned with the virtual reference point C0.

[0043] Next, with reference to FIGS. 6 to 8, a ruling tool 150 for forming the ruled lines L1 and L2 on the wall surface when forming the through hole 12 for installing the wiring fixture 15 on the wall 11 will be described. FIGS. 6(a) and (b) are schematic perspective views of the ruling tool 150 of the present embodiment as viewed from the front and the rear. FIGS. 7(a) and (b) are front view and rear view of the ruling tool 150. FIG. 8 is a C-C cross-sectional view of the ruling tool 150.

[0044] As shown in FIGS. 6 to 8, the ruling tool 150 includes a rectangular flat frame 151, and a plurality of slits for inserting the pen tip and ruling on the wall surface (before the formation of the through hole 12) are formed in the frame 151. In particular, in order to place the ruling tool 150 at the ruling position, the ruling tool 150 includes a reference alignment portion 152 that is aligned with a virtual reference point C0 defined in advance within the formation range of the through hole 12 on a virtual plane along the wall surface, a first ruling line L1 that overlaps with a first virtual straight line L1' extending in a first direction on the virtual plane and passing through the virtual reference point C0 is provided at a position outside at least the formation range of the through hole 12 on the wall surface, a second ruling line L2 that overlaps with a second virtual straight line L2' extending in a second direction orthogonal to the first direction on the virtual plane and passing through the virtual reference point C0 is provided at a position outside at least the formation range of the through hole 12 on the wall surface, and a decorative plate display portion 156 that displays the installation range of the decorative plate 16 to be attached to the wiring fixture 15 installed on the wall surface side in a state where the reference alignment portion 152 is aligned with the virtual reference point C0.

[0045] The reference position alignment portion 152 consists of cross-shaped slits formed at the upper, lower, left, and right centers of the frame body 151. The reference position alignment portion 152 is used to align the center of the cross with the ruled mark ruled at a position corresponding to the virtual reference point C0. The first index portion 153 consists of two cross-shaped slits respectively formed above and below the reference position alignment portion 152 of the frame body 151. The centers of the upper and lower crosses of the first index portion 153 are arranged to coincide with the centers of the two mounting holes 105 of the wiring fixture mounting tool 100. In other words, the center-to-center distance between the upper and lower crosses of the first index portion 153 is the same as the center-to-center distance between the two mounting holes 105. Also, the reference position alignment portion 152 is arranged at the intermediate position in the arrangement direction of the two slits of the first index portion 153. The second index portion 154 consists of two - (minus) shaped slits respectively formed on the left and right of the reference position alignment portion 152 of the frame body 151. The reference position alignment portion 152 is arranged at the intermediate position in the arrangement direction of the two slits of the second index portion 154. Also, the arrangement direction of the two slits of the second index portion 154 is orthogonal to the arrangement direction of the two slits of the first index portion 153. That is, the reference position alignment portion 152, the first index portion 153, and the second index portion 154 are arranged on the frame body 151 so as to be able to rule the first ruled line L1 and the second ruled line L2 in the outer region outside the formation range of the through hole 12 in the wall surface with the reference position alignment portion 152 aligned with the virtual reference point C0.

[0046] Further, the outer peripheral edge of the frame body 151 functions as a decorative plate display portion 156 that displays the outer peripheral edge (installation range) of the decorative plate 16 disposed on the wall surface side. That is, the outer shape of the frame body 151 is formed to correspond to the outer shape of the decorative plate 16. In particular, this decorative plate display portion 156 displays at least the interval between the opposing upper and lower sides and the interval between the left and right sides of the rectangular decorative plate. The user can easily and visually grasp the installation range of the decorative plate 16 in the wiring fixture 15 to be disposed by simply applying the frame body 151 to the wall surface and aligning the reference position alignment portion 152 with the ruled mark of the virtual reference point C0.

[0047] Further, the ruling tool 150 may further include a third index portion 155 for attaching a third ruling line L3 for forming the through hole 12 along the outer edge of the formation range of the through hole 12. The user can use the third index portion 155 to attach an L-shaped third ruling line L3 that defines the four corners of the formation range of the through hole 12 to the wall surface. Here, the first index portion 153 and the second index portion 154 extend from the inside to the outside of the formation range of the through hole 12 indicated by the third index portion 155 and are arranged so as to be within the installation range of the decorative plate 16 displayed by the decorative plate display portion 156. Due to this positional relationship, the user can attach the first ruling line L1 and the second ruling line L2 to the outer region of the through hole 12 and the inner region of the decorative plate 16. In other words, it is possible to prevent the ruling lines from protruding outside the decorative plate 16 and deteriorating the appearance.

[0048] Further, the ruling tool 150 may further include a level 157 for arranging the frame body 151 in a horizontal posture at the ruling position. By using the level 157, the user can easily form the through hole 12 without tilting it and can easily install the wiring device 15 without tilting it.

[0049] Next, with reference to FIGS. 9 to 11, an appliance installation structure 10 in which a wiring device 15 is installed in the through hole 12 of the wall 11 will be described. FIG. 9 is a schematic exploded perspective view seen from the wall surface showing the appliance installation structure 10. FIG. 10 is a front view seen from the wall surface of the appliance installation structure 10. FIG. 11 is a cross-sectional view taken along line D-D of the appliance installation structure 10. For the sake of convenience of explanation, in FIG. 10, the wiring device 15 and the decorative plate 16 are shown by phantom lines and are depicted in a state where the wiring device 15 and the decorative plate 16 are transparent. Also, in FIG. 11, since the wiring device 15 is a general appliance such as a switch or a socket, the description of its internal structure and wiring is simplified or omitted.

[0050] As shown in FIG. 9, the appliance installation structure 10 is configured such that a wiring appliance 15 is fixed to a pair of mounting holes 105 of a wiring appliance fixture 100 that is aligned and fixed with respect to a through hole 12 in a wall 11, and a decorative plate 16 is fitted so as to cover the wiring appliance 15. The decorative plate 16 can be interpreted as a part of the "wiring appliance", but for convenience of explanation, it is separately denoted here.

[0051] In the appliance installation structure 10, a fixture main body 101 of the wiring appliance fixture 100 is attached to the periphery of a through hole 12 formed in the wall 11. As shown in FIG. 10, a flange portion 101b of the fixture main body 101 covers the periphery of the through hole 12, and a wall front side contact portion 107 formed on the rear surface thereof contacts the wall front side periphery of the through hole 12. Further, as shown in FIG. 11, a housing portion 101a is disposed to penetrate the through hole 12, and an insertion portion 103 is inserted into the back side of the wall through the through hole 12. Then, movable pieces 102 project from the insertion portion 103 in the vertical directions respectively, and a wall back side contact portion 108 formed on the front surface of the movable piece 102 contacts the wall back side periphery of the through hole 12. In the appliance installation structure 10, due to the operation portion 109a being tightened with a strong torque, the wall back side contact portion 108 is in pressure contact with the wall back side periphery. In this way, in the state where the wiring appliance fixture 100 is aligned, with respect to the periphery of the through hole 12, the two wall back side contact portions 108 ensure a sufficient contact surface area and are in pressure contact substantially evenly, enabling more stable installation of the wiring appliance 15 to the wall 11. That is, the wall front side contact portion 107 and the wall back side contact portion 108 cooperate to sandwich the wall 11 at the periphery of the through hole 12, so that the wiring appliance fixture 100 is stably fixed to the through hole 12. Then, an appliance frame 15b of the wiring appliance 15 is fixed to the pair of mounting holes 105 of the wiring appliance fixture 100 with screws, and the decorative plate 16 is fitted to the fixture main body 101 so as to cover the wiring appliance 15 and cover the gap between the fixture main body 101 and the periphery of the through hole 12.

[0052] Also, as shown in FIG. 10, when the decorative plate 16 is removed, the first ruled line L1 faces the wall surface side from the slit of the first alignment portion 111 of the wiring fixture installer 100, and the second ruled line L2 faces the wall surface side from the slit of the second alignment portion 113. The user can check whether the wiring fixture installer 100 is properly aligned by visually checking the remaining lines of the first ruled line L1 and the second ruled line L2 through the slits with the decorative plate 16 removed. On the other hand, since the first ruled line L1 and the second ruled line L2 are inside the outer peripheral edge of the decorative plate 16 as remaining lines, they are not exposed to the outside and do not impair the aesthetics of the fixture installation structure 10 even if they are not removed.

[0053] And in the fixture installation structure 10 of the present embodiment, since the wiring fixture installer 100 is accurately aligned and installed by the alignment mechanism, the virtual reference point C0 associated with the planned installation positions of the wiring fixture 15 and the decorative plate 16 coincides with the vertical and horizontal center positions of the actually installed decorative plate 16. As a result, it is also possible to more accurately provide the wiring fixture 15 at the preset planned installation position on the wall surface.

[0054] Next, a method of constructing the fixture installation structure 10 will be described. FIGS. 12(a) to (d) show the steps until ruled lines L1 to L3 are drawn on the wall 11 and the through hole 12 is formed in the method.

[0055] First, based on a pre-determined building design drawing or the like, the user determines the planned positions for arranging the wiring device 15 and the decorative plate 16 on the wall surface of the wall 11. The rectangular virtual line on the outer peripheral side shown in Fig. 12(a) indicates the planned position of the outer peripheral edge of the decorative plate 16, and the rectangular virtual line on the inner peripheral side indicates the planned position for forming the through hole 12. Based on the planned positions, the vertical and horizontal center positions (points) of the entire outer peripheral shape of the decorative plate 16 are determined at the points where they are to be arranged. This point is set as the virtual reference point C0 that is referred to as the alignment reference for the wiring device fixture 100. The straight line extending in the vertical direction passing through this virtual reference point C0 is the first virtual straight line L1', and the straight line extending in the horizontal direction passing through the virtual reference point C0 is the second virtual straight line L2'. That is, the virtual reference point C0, the first virtual straight line L1', and the second virtual straight line L2' are related to each other. Then, as shown in Fig. 12(a), the user marks a grid point with a pen or the like at the virtual reference point C0 on the wall surface.

[0056] Next, the user uses the grid marking tool 150 to form the first grid line L1, the second grid line L2, and the third grid line L3 on the wall surface of the wall 11 with the pre-set virtual reference point C0 on the wall surface as a reference. Specifically, the user places the grid marking tool 150 on the wall surface and positions the center of the cross slit of its reference alignment part 152 above the grid point indicating the virtual reference point C0. Then, using the level 157 provided on the grid marking tool 150, the user levels the posture of the grid marking tool 150. As shown in Fig. 12(b), the first indicator part 153 displays the positions of the first virtual straight line L1' and the mounting hole 105 to the user through the slit, the second indicator part 154 displays the position of the second virtual straight line L2' to the user through the slit, and the third indicator part 155 displays the planned formation range of the through hole 12 to the user through the slit. Further, the decorative plate display part 156 forming the outer peripheral edge of the frame body 151 displays the planned position (outer peripheral edge) of the decorative plate 16 to the user. The user can attach the first grid line L1 corresponding to the first virtual straight line L1' to the wall surface, the second grid line L2 corresponding to the second virtual straight line L2' to the wall surface, and the third grid line L3 corresponding to the four corners of the through hole 12 to the wall surface by inserting the pen tip into each slit of the grid marking tool 150.

[0057] As shown in FIG. 12(c), the first ruled line L1 forms a cross-shaped mark, the vertical line thereof overlaps with the first virtual straight line L1', and the intersection point thereof indicates the center of each mounting hole 105. The second ruled line L2 forms a dash-shaped mark, and the horizontal line thereof overlaps with the second virtual straight line L2'. The third ruled line L3 forms an L-shaped mark and overlaps with the outer peripheral edge of the through hole 12 to be formed. Then, the vertical line of the first ruled line L1 and the horizontal line of the second ruled line L2 are continuously drawn across the inside and outside of the outer peripheral edge of the through hole 12 to be formed. Thereby, it is possible to prevent the ruled lines from being interrupted at the peripheral edge of the formed through hole 12.

[0058] Next, the user forms a through hole 12 in the wall 11 using a saw or a drilling tool based on the ruled point of the virtual reference point C0 and / or the third ruled line L3. As a result, as shown in FIG. 12(d), the first ruled line L1 and the second ruled line L2 are attached to the wall surface, and a through hole structure in which the through hole 12 is accurately drilled at its planned formation position can be constructed. When the through hole 12 is formed, the ruled point visually displaying the virtual reference point C0 disappears, but the first ruled line L1 and the second ruled line L2 can indirectly display the virtual reference point C0 on the virtual plane along the wall surface.

[0059] Subsequently, with reference to FIGS. 13 to 15, a method for installing the wiring device installer 100 of the present embodiment to the through hole 12 formed in the wall 11 will be described. FIGS. 13 and 14 show the steps until the wiring device installer 100 is inserted into the through hole 12 and aligned. FIGS. 15(a) and (b) show the steps of operating the drive mechanism 109 of the wiring device installer 100 to fix the wiring device installer 100 to the wall 11.

[0060] As shown in FIG. 13, the user inserts the housing portion 101a (insertion portion 103) of the wiring device installer 100 from the wall surface through the through hole 12 into the wall cavity, and makes the flange portion 101b (wall surface side contact portion 107) contact the peripheral edge of the through hole 12 on the wall surface side. At this time, the movable piece 102 is maintained in the retracted position so that it can pass through the through hole 12 without interfering with the wall 11. Further, since the formation range of the through hole 12 is larger than the outer shape of the housing portion 101a, at this stage, the wiring device installer 100 can move freely up, down, left, and right with respect to the through hole 12, and the installation position is not determined.

[0061] Next, the user aligns the wiring device installer 100 using the alignment mechanism to determine the installation position of the wiring device installer 100 on the wall surface. Here, the middle position between the two mounting holes 105 of the wiring device installer 100 is set as the reference point C1, and alignment is performed for the purpose of making this reference point C1 coincide with the virtual reference point C0. In the alignment process, as shown in FIG. 14, with the flange portion 101b (wall surface side contact portion 107) applied to the wall surface, the user slides the wiring device installer 100 to a position where the first ruled line L1 faces the wall surface from the slits of the two first alignment portions 111 and the second ruled line L2 faces the wall surface from the slits of the two second alignment portions 113. As a result, the reference point C1 of the wiring device installer 100 can be made to coincide with the virtual reference point C0. That is, by simultaneously aligning the first ruled line L1 and the first alignment portion 111, and the second ruled line L2 and the second alignment portion 113, the virtual reference point C0 and the reference point C1 can be made to coincide, and the installation position of the wiring device installer 100 can be determined.

[0062] Subsequently, while maintaining the installation position of the wiring fixture mounting tool 100, the user fixes the wiring fixture mounting tool 100 to the wall 11 by operating the drive mechanism 109. Specifically, as shown in Fig. 15(a), by rotating the operation part 109a in one direction from the wall surface with a tool (driver), each movable piece 102 can be rotated from the retracted position to the protruding position, and each backside wall contact part 108 can be arranged at a position where it can clamp. Further, by rotating the operation part 109a, as shown in Fig. 15(b), the movable piece 102 is screwed in so as to approach the wall 11 along the rotation operation shaft 109b. The user presses the backside wall contact part 108 against the peripheral edge of the backside of the through hole 12 in the wall 11 by tightening the operation part 109a with a strong torque. As a result, the front side wall contact part 107 and the backside wall contact part 108 cooperate to clamp the wall 11, and the wiring fixture mounting tool 100 is firmly fixed to the wall 11. Then, the user fixes the wiring fixture 15 with screws from the front side of the wall to the pair of mounting holes 105 of the wiring fixture mounting tool 100 installed at a predetermined position. Finally, the fixture installation structure 10 can be constructed by fitting the decorative plate 16 onto the fixture body 101 (decorative plate mounting part 106) so as to cover the wiring fixture 15. In particular, by setting the timing for determining the installation position of the wiring fixture mounting tool 100 to be when tightening with a strong torque (so-called additional tightening), it can be installed at a more accurate position.

[0063] Note that the wiring device installer of the present invention may be interpreted as including a configuration in which a wiring device or a part thereof is integrally held or fixed. As shown in FIG. 16, the wiring device installer 100' may be inserted into the through hole 12 and aligned while integrally holding or fixing the wiring device 15' to the installer main body 101 so that it can be installed on the wall 11. In particular, the instrument frame 15b' is configured such that the operation portion 109a of the drive mechanism 109 can be operated by inserting a tool into an additionally provided operation hole (a hole located beside the hole communicating with each mounting hole 105). At this time, the instrument holding portion for holding the wiring device 15' is not limited to the mounting hole 105, and can be interpreted as the installer main body 101 itself that holds the wiring device 15' or holds the decorative plate 16 which is a part of the wiring device. Further, in the wiring device installer 100', the first alignment portion 111' is formed by the communication of a hole provided in the instrument frame 15b' of the wiring device 15' and a slit formed in the installer main body 101, and can be aligned with respect to the first ruled line L1.

[0064] As yet another example, like the wiring device installer of Patent Document 1, it may be configured such that the wiring device 15 can be directly held inside the installer main body 101. Further, the decorative plate may be fixed to holes (for example, holes located above and below the holes communicating with each mounting hole 105) provided in the instrument frames 15b, 15b' of a separate decorative plate mounting frame (not shown), and the wiring device may be attached to the decorative plate mounting frame so as to be integrated with the wiring device.

[0065] Hereinafter, the effects of the wiring device installer 100 and the ruling tool 150 according to an embodiment of the present invention will be described.

[0066] According to the wiring fixture installer 100 of the present embodiment, by using the alignment mechanism, a predetermined reference point C0 on a virtual plane along the wall surface is aligned with a predetermined reference point C1 of the wiring fixture installer 100 within the range of the through hole 12, so that the relative position of the wiring fixture 15 with respect to the through hole 12 can be appropriately determined. The alignment mechanism is provided with a first alignment portion 111 and a second alignment portion 113. The first alignment portion 111 is configured to be alignable with a first ruled line L1 overlapping a first virtual straight line L1' passing through the virtual reference point C0, and the second alignment portion 113 is configured to be alignable with a second ruled line L2 overlapping a second virtual straight line L2' (orthogonal to the first virtual straight line L1') passing through the virtual reference point C0. The user operates the wiring fixture installer 100 from the wall surface side to simultaneously align the first ruled line L1 and the first alignment portion 111 with the second ruled line L2 and the second alignment portion 113, thereby matching the virtual reference point C0 and the reference point C1 and determining the relative installation position of the wiring fixture installer 100 with respect to the through hole 12. That is, the alignment mechanism arranges the wiring fixture installer 100 at a desired installation position with respect to the range of the through hole 12 (where the reference point C1 and the virtual reference point C0 coincide), and as a result, enables the wiring fixture 15 to be provided at a preset planned installation position on the wall surface. By appropriately setting the reference point C1 and the virtual reference point C0 and using the alignment mechanism, in the fixture installation structure 10, it becomes easy to position and install the wiring fixture installer 100 without being offset with respect to the range of the through hole 12 so that the wall surface side contact portion 107 and the wall back side contact portion 108 surely contact the periphery of the through hole 12. Therefore, the wiring fixture installer 100 of the present embodiment can more accurately provide the wiring fixture 15 at a preset planned installation position on the wall surface and enables a more stable installation of the wiring fixture 15 on the wall 11.

[0067] According to the ruled line tool 150 of the present embodiment, by aligning the reference alignment portion 152 with respect to a virtual reference point C0 predetermined within the formation range of the through hole 12 on the virtual plane along the wall surface, the ruled line tool 150 is arranged at a ruled line position for ruling the first ruled line L1 and the second ruled line L2 enabling positioning of the wiring fixture installer 100 on the wall surface. Then, in a state where the ruled line tool 150 is aligned and applied to the wall surface, using the first indicator portion 153, the first ruled line L1 overlapping with the first virtual straight line L1' passing through the virtual reference point C0 is applied outside the formation range of the through hole 12 on the wall surface, and using the second indicator portion 154, the second ruled line L2 orthogonal to the first virtual straight line L1' and overlapping with the second virtual straight line L2' passing through the virtual reference point C0 can be applied outside the formation range of the through hole 12 on the wall surface. After forming the through hole 12 in the wall 11, it becomes possible to determine the relative installation position of the wiring fixture installer 100 with respect to the through hole 12 using the first ruled line L1 and the second ruled line L2 applied outside the range of the through hole 12. Further, the user can grasp the installation range of the decorative plate 16 on the wall surface by the decorative plate display portion 156. Also, by knowing the installation range of the decorative plate 16, it is possible to prevent the ruled lines from being applied so as to protrude outside the installation range of the decorative plate 16. That is, the ruled line tool 150 can apply the first ruled line L1 and the second ruled line L2 to the wall surface without exposing the ruled lines, and by using it together with the alignment mechanism of the wiring fixture installer 100, it becomes possible to position and install the wiring fixture installer 100 without being offset with respect to the formation range of the through hole 12. Therefore, the ruled line tool 150 of the present embodiment contributes to more accurately providing the decorative plate 16 and the wiring fixture 15 at the preset planned installation positions on the wall surface by applying the first ruled line L1 and the second ruled line L2, and enabling more stable installation of the wiring fixture 15 on the wall 11.

[0068] The present invention is not limited to the above embodiment and can take various embodiments. Hereinafter, another embodiment of the present invention will be described. In each embodiment, among the components indicated by three digits, the components having the same lower two digits have the same or similar features and the description thereof will be partially omitted unless otherwise described.

[0069] [Second Embodiment] Referring to FIGS. 17 to 19, a wiring device installer 200 according to another embodiment (second embodiment) of the present invention will be described. FIGS. 17(a) and (b) are schematic perspective views of the wiring device installer 200 as viewed from the front and rear. FIGS. 18(a) and (b) are front and rear views of the wiring device installer 200. FIGS. 19(a) to (d) are a plan view, a left side view, a right side view, and a bottom view of the wiring device installer 200.

[0070] The wiring device installer 200 of the present embodiment is configured to attach two wiring devices in parallel in the horizontal axis direction with respect to the wiring device installer 100 of the first embodiment. The wiring device installer 200 is provided with two pairs of mounting holes 205 for attaching two wiring devices respectively. Here, the reference point C1 of the wiring device installer 200 is defined at the center in the vertical and horizontal directions of the entire outer peripheral shape of the installer body 201. That is, the reference point C1 of the wiring device installer 200 is at the middle of the two mounting holes 205 forming each pair arranged in the vertical direction, and is defined at the middle of the lateral arrangement direction of the pair of mounting holes 205 (the fixing portion to which one wiring device is attached). Then, the first alignment portion 211 and the second alignment portion 213 are formed on the vertical axis and the horizontal axis that linearly pass through the reference point C1. According to the shape of the wiring device held by the wiring device installer 200, at least a through hole, a first ruled line L1, and a second ruled line L2 are formed on the wall. The user operates the wiring device installer 200 from the wall surface side to simultaneously align the first ruled line L1 and the first alignment portion 211 with the second ruled line L2 and the second alignment portion 213, so that the virtual reference point C0 and the reference point C1 are made to coincide, and the relative installation position of the through hole of the wiring device installer 200 can be determined. Therefore, similar to the first embodiment, the wiring device installer 200 of the present embodiment can accurately provide two wiring devices at preset planned installation positions on the wall surface and enable more stable installation of the wiring devices on the wall.

[0071] [Third Embodiment] Referring to FIGS. 20 to 23, a wiring device installer 300 according to another embodiment (the third embodiment) of the present invention will be described. FIG. 20 is a schematic exploded perspective view seen from the front of the wiring device installer 300. FIGS. 21(a) and (b) are a front view and a rear view of the wiring device installer 300. FIGS. 22(a) to (d) are a plan view, a left side view, a right side view, and a bottom view of the wiring device installer 300. FIG. 23 is a cross-sectional view taken along line E-E of the wiring device installer 300.

[0072] The wiring device installer 300 of the present embodiment is composed of a frame-shaped installer body 301 that integrally holds a wiring device 35, and an insertion body 302 that is connected to the installer body 301 via two screws 309a and is inserted into the back side of the wall. In the present embodiment, the wiring device 35 refers to the device body. The installer body 301 forms a device holding portion that integrally holds the wiring device 35. That is, a well-known holding mechanism provided in the device frame of the wiring device is integrally provided as the device holding portion. Further, insertion holes 309b through which the screws 309a can rotate freely are formed at the upper and lower positions of the wiring device 35 in the installer body 301. On the other hand, the insertion body 302 is composed of a rectangular annular frame body that is inserted into the back of the wall. Further, the insertion body 302 has a rectangular opening on the inside. Furthermore, two screw holes 309c into which two screws 309a inserted into the two insertion holes 309b are respectively screwed are provided at two positions in the insertion body 302. These screws 309a, insertion holes 309b, and screw holes 309c function as a drive mechanism 309 that relatively draws the installer body 301 and the insertion body 302 through the wall 31 by an operation from the front side of the wall, and operates to sandwich the wall 31 between the installer body 301 and the insertion body 302.

[0073] The wiring device mounting tool 300 includes an insertion portion 303 inserted into the back side of the wall, a tool holding portion (mounting tool main body 301) that holds the front surface of the wiring device 35 exposed on the front side of the wall, a front side wall contact portion 307 that abuts against the peripheral edge on the front side of the through hole 32 formed in the wall 31, a back side wall contact portion 308 that abuts against the peripheral edge on the back side of the through hole 32 and, in cooperation with the front side wall contact portion 307, sandwiches the wall 31 at the peripheral edge of the through hole, a drive mechanism 309 that operates to relatively draw the front side wall contact portion 307 and the back side wall contact portion 308 closer to each other through the wall 31 by an operation from the front side of the wall so as to sandwich the wall 31 with the front side wall contact portion 307 and the back side wall contact portion 308, and an alignment mechanism for determining the installation position of the wiring device 35 (wiring device mounting tool 300) on the wall surface. In the present embodiment, the tool holding portion and the front side wall contact portion 307 are provided on the mounting tool main body 301, and the insertion portion 303 and the back side wall contact portion 308 are provided on the insertion body 302. The drive mechanism 309 drives the front side wall contact portion 307 and the back side wall contact portion 308 closer to each other.

[0074] The insertion portion 303 refers to the entire insertion body 302 inserted into the back side of the wall through the through hole 32. The outer peripheral shape of the insertion portion 103 is larger than the inner diameter of the through hole 32, but by tilting its posture, it can be installed on the back side of the wall through the through hole 12. In this embodiment, although the insertion body is annular, a part of the annular shape may be missing, or it may be a two-piece body screwed to the upper and lower screws 309a respectively, and its form is not limited to this embodiment.

[0075] The front side wall contact portion 307 is formed on the rear surfaces of the upper end portion and the lower end portion of the mounting tool main body 301 so as to abut against the upper and lower portions of the peripheral edge from the front surface of the through hole 32. The back side wall contact portion 308 is formed on the front surface of the annular insertion body 302 so as to abut against the entire peripheral edge from the back side of the through hole 32. That is, the back side wall contact portion 308 forms a rectangular annular contact surface so as to abut against substantially the entire circumferential direction of the peripheral edge of the through hole 32. The back side wall contact portion 308 is configured to move closer to the front side wall contact portion 307 by the operation of the drive mechanism 309 and sandwich the wall 31.

[0076] The drive mechanism 309 includes a screw 309a that connects the installation tool body 301 and the insertion body 302, and is configured to drive the wall back contact portion 308 by a user's operation. Specifically, when the user rotates the head of the screw 309a exposed on the wall front side with a tool such as a driver, the screw 309a idles in the insertion hole 301b of the installation tool body 301, while the screw hole 309c of the insertion body 302 is screwed in, so that the insertion body 302 moves closer to the installation tool body 301. By rotating the two screws 309a simultaneously or alternately, the insertion body 302 can be pulled forward with respect to the installation tool body 301.

[0077] The alignment mechanism is a mechanism for aligning the reference point C1 of the wiring device installation tool 300 with a virtual reference point C0 predetermined within the formation range of the through hole 32 on a virtual plane along the wall surface of the wall 31. In the present embodiment, the virtual reference point C0 is set as the upper, lower, left, and right center points of the overall shape of the wiring device 35 exposed on the wall front side at the planned installation position of the wiring device 35 preset on the wall surface. Further, the reference point C1 is set as the center point of the wiring device 35 held by the installation tool body 301.

[0078] The alignment mechanism includes a first alignment portion 311 for aligning with the first ruled line L1 attached to the wall surface, and a second alignment portion 313 for aligning with the second ruled line L2. The first alignment portion 311 is formed at the upper and lower ends in the vertical direction of the installation tool body 301 so as to be disposed outside the formation range of the through hole 32 when installed. On the other hand, the second alignment portion 313 is formed on the installation tool body 301 so as to be disposed inside the formation range of the through hole 32 when installed. Further, the first alignment portion 311 and the second alignment portion 313 are respectively formed on the vertical axis and the horizontal axis that linearly pass through the reference point C1 (which is the center point of the wiring device 35). And the first alignment portion 311 and the second alignment portion 313 are formed on the installation tool body 301 so as to be exposed on the wall front side.

[0079] Specifically, the first alignment portion 311 is composed of small-diameter holes respectively formed at the upper and lower ends of the fixture main body 301. The second alignment portion 313 is composed of protrusions with pointed tips respectively protruding from both side surfaces of the fixture main body 301. By the user visually observing from the wall front side and arranging two first ruled lines L1 in the two holes of the first alignment portion 311 and arranging two second ruled lines L2 at the positions pointed by the two protrusions of the second alignment portion 313, the reference point C1 can be aligned with the virtual reference point C0.

[0080] Subsequently, with reference to FIGS. 24 to 26, a method of installing the wiring fixture installer 300 of the present embodiment in the through hole 32 formed in the wall 31 will be described. The process of forming the through hole 32 with the first ruled line L1 and the second ruled line L2 on the wall 31 has already been described with reference to FIG. 12. FIGS. 24 and 25 show the process until the wiring fixture installer 300 is inserted into the through hole 32 and aligned. FIGS. 26(a) and (b) show the process of operating the drive mechanism 309 of the wiring fixture installer 300 to fix the wiring fixture installer 300 to the wall 31.

[0081] First, as shown in FIG. 24, the user inserts the insert body 302 into the wall back through the through hole 32 from the wall front side and brings the fixture main body 301 (the wall front side contact portion 307) into contact with the peripheral edge of the through hole 32 on the wall front side. The insertion of the insert body 302 into the wall back may be performed in a state separated from the fixture main body 301. In that case, after the insertion of the insert body 302, the fixture main body 301 and the insert body 302 are connected by two screws 309a. Alternatively, the insertion of the insert body 302 into the wall back may be performed while changing its posture in a state where the fixture main body 301 and the insert body 302 are connected by one or two screws 309a. At this stage, the wiring fixture installer 300 can move freely up, down, left, and right with respect to the through hole 32, and the installation position is not determined.

[0082] Next, the user aligns the wiring fixture mounting tool 300 using the alignment mechanism to determine the installation position on the wall surface of the wiring fixture mounting tool 300. Here, the center of the wiring fixture 35 of the wiring fixture mounting tool 300 is set as the reference point C1, and alignment is performed for the purpose of making this reference point C1 coincide with the virtual reference point C0. In the alignment process, as shown in FIG. 25, with the wall surface side contact portion 307 applied to the wall surface, the user slides the wiring fixture mounting tool 300 to a position where the first ruled line L1 faces the wall surface through the holes of the two first alignment portions 311 and the tips of the protrusions of the two second alignment portions 313 point to the second ruled line L2. As a result, the reference point C1 of the wiring fixture mounting tool 300 can be made to coincide with the virtual reference point C0. That is, by simultaneously aligning the first ruled line L1 and the first alignment portion 311, and the second ruled line L2 and the second alignment portion 313, the virtual reference point C0 and the reference point C1 can be made to match, and the installation position of the wiring fixture mounting tool 300 can be determined.

[0083] Subsequently, while maintaining the installation position of the wiring fixture mounting tool 300, the user operates the drive mechanism 309 to fix the wiring fixture mounting tool 300 to the wall 31. Specifically, as shown in FIG. 26, by rotating the screw 309a in one direction from the wall surface with a tool (driver), the insertion body 302 is screwed in so as to approach the wall 31. The user tightly fastens the screw 309a with strong torque to press the wall back side contact portion 308 against the peripheral edge of the through hole 32 of the wall 31 on the wall back side. As a result, the wall surface side contact portion 307 and the wall back side contact portion 308 cooperate to sandwich the wall 31, and the wiring fixture mounting tool 300 is firmly fixed to the wall 31. Thus, the user can construct the fixture installation structure 30. In particular, by setting the timing for determining the installation position of the wiring fixture mounting tool 300 at the time of tightening with strong torque (so-called over-tightening), it can be installed at a more accurate position. Note that a decorative plate may be fitted to the fixture main body 301 so as to cover the wiring fixture 35 from the wall surface side.

[0084] Therefore, similar to the first embodiment, the wiring device installer 300 of the present embodiment can accurately install the wiring device 35 at a preset installation position on the wall surface and enable more stable installation of the wiring device 35 on the wall.

[0085] [Fourth Embodiment] Referring to FIGS. 27 to 30, the wiring device installer 300 of another embodiment (fourth embodiment) of the present invention will be described. FIG. 27 is a schematic exploded perspective view seen from the front of the wiring device installer 400. FIGS. 28(a) and (b) are a front view and a rear view of the wiring device installer 400. FIGS. 29(a) to (d) are a plan view, a left side view, a right side view, and a bottom view of the wiring device installer 400. FIG. 30 is a cross-sectional view taken along line F-F of the wiring device installer 400.

[0086] The wiring device installer 400 of the present embodiment is composed of a frame-shaped installer main body 401 that integrally holds the wiring device 45, and an insert body 402 that is connected to the installer main body 401 via two screws 409a and is inserted into the back side of the wall. The wiring device installer 400 of the present embodiment is different from the wiring device installer 300 of the third embodiment in that the second alignment portion 413 is formed on the insert body 402. The description of other common configurations will be partially omitted.

[0087] The wiring device mounting tool 400 includes an insertion portion 403 inserted into the back side of the wall, a tool holding portion (mounting tool main body 401) that holds the front surface of the wiring device 45 in an exposed state on the front side of the wall, a front side wall contact portion 407 that abuts against the peripheral edge on the front side of the wall of the through hole 42 formed in the wall 41, a back side wall contact portion 408 that abuts against the peripheral edge on the back side of the through hole 42 and, in cooperation with the front side wall contact portion 407, sandwiches the wall 41 at the peripheral edge of the through hole, a drive mechanism 409 that operates to relatively draw the front side wall contact portion 407 and the back side wall contact portion 408 closer to each other via the wall 41 by an operation from the front side of the wall so as to sandwich the wall 41 with the front side wall contact portion 407 and the back side wall contact portion 408, and an alignment mechanism for determining the installation position of the wiring device 45 (wiring device mounting tool 400) on the wall surface. In the present embodiment, the tool holding portion and the front side wall contact portion 407 are provided on the mounting tool main body 401, and the insertion portion 403 and the back side wall contact portion 408 are provided on the insert 402. The drive mechanism 409 drives the front side wall contact portion 407 and the back side wall contact portion 408 closer to each other, and is the same as the drive mechanism 309 of the third embodiment.

[0088] The alignment mechanism is a mechanism for aligning the reference point C1 of the wiring device mounting tool 400 with a virtual reference point C0 predetermined within the formation range of the through hole 42 on a virtual plane along the wall surface of the wall 41. In the present embodiment, the virtual reference point C0 is set as the center point of the upper, lower, left, and right of the overall shape of the wiring device 45 exposed on the front side of the wall at the planned installation position of the wiring device 45 preset on the wall surface. Further, the reference point C1 is set as the center point of the wiring device 45 held by the mounting tool main body 401.

[0089] The alignment mechanism includes a first alignment portion 411 for aligning with the first ruled line L1 attached to the wall surface, and a second alignment portion 413 for aligning with the second ruled line L2. The first alignment portion 411 is formed at the upper and lower ends in the vertical direction of the fixture main body 401 so as to be disposed outside the formation range of the through hole 32 when installed. On the other hand, the second alignment portion 413 is formed on the insert 402 so as to be disposed inside the formation range of the through hole 42 when installed. Also, the first alignment portion 411 and the second alignment portion 413 are formed on the vertical axis and the horizontal axis that linearly pass through the reference point C1 (which is the center point of the wiring fixture 45). And the first alignment portion 411 and the second alignment portion 413 are respectively formed on the fixture main body 401 and the insert 402 so as to be exposed on the wall surface side.

[0090] Specifically, the first alignment portion 411 consists of small-diameter holes respectively formed at the upper end and the lower end of the fixture main body 401. The second alignment portion 413 consists of notches laterally cut out on both sides of the inner peripheral edge of the insert 402. Here, the lateral width of the fixture main body 401 is at least smaller than the lateral width of the opening of the insert 402. Also, both the lateral width of the fixture main body 401 and the lateral width of the opening of the insert 402 are smaller than the lateral width of the through hole 42. That is, when the insert 402 is inserted into the wall back, the opening edges on both lateral sides of the insert 402 are configured to be exposed on the wall surface through the through hole 42. And the second alignment portion 413 is provided at a position where it can be visually recognized from the wall surface side of the insert 402 through the through hole 42. By the user visually observing from the wall surface side and arranging the two first ruled lines L1 in the two holes of the first alignment portion 411, and arranging the two second ruled lines L2 at positions continuously in the lateral direction with the two notches of the second alignment portion 413, the reference point C1 can be made to coincide with the virtual reference point C0.

[0091] Next, with reference to FIGS. 31 and 32, a method for installing the wiring device installer 400 of the present embodiment to the through hole 42 formed in the wall 41 will be described. The process of forming the through hole 42 by attaching the first ruled line L1 and the second ruled line L2 to the wall 41 has already been described with reference to FIG. 12. FIGS. 31 and 32 show the process until the wiring device installer 400 is inserted into the through hole 42 and aligned. Since the subsequent processes are the same as those of the third embodiment, the description thereof will be omitted.

[0092] First, as shown in FIG. 31, the user inserts the insertion body 402 from the wall front side through the through hole 42 into the wall back side, and brings the installer main body 401 (the wall front side contact portion 407) into contact with the peripheral edge of the through hole 42 on the wall front side. At this stage, the wiring device installer 400 can move freely up, down, left, and right with respect to the through hole 42, and the installation position is not determined. Next, the user aligns the wiring device installer 400 using the alignment mechanism in order to determine the installation position of the wiring device installer 400 on the wall surface. Here, the center of the wiring device 45 of the wiring device installer 400 is set as the reference point C1, and alignment is performed for the purpose of making this reference point C1 coincide with the virtual reference point C0. In the alignment process, as shown in FIG. 32, with the wall front side contact portion 407 in contact with the wall surface, the user slides the wiring device installer 400 to a position where the first ruled line L1 faces the wall front side from the holes of the two first alignment portions 411, and the notches of the two second alignment portions 43 facing the wall front side from the wall back side through the through hole 42 are continuously aligned with the second ruled line L2 in the lateral direction. As a result, the reference point C1 of the wiring device installer 400 can be made to coincide with the virtual reference point C0. That is, by simultaneously aligning the first ruled line L1 and the first alignment portion 411, and the second ruled line L2 and the second alignment portion 413, the virtual reference point C0 and the reference point C1 can be made to coincide, and the installation position of the wiring device installer 400 can be determined.

[0093] Therefore, similar to the first embodiment, the wiring device installer 400 of the present embodiment can accurately install the wiring device 45 at a preset planned installation position on the wall surface, and enables more stable installation of the wiring device 45 on the wall.

[0094] The present invention is not limited to the above-described embodiments and can take various modified forms. Hereinafter, modified forms of the present invention will be described.

[0095] (1) The wiring fixture mounting tool of the present invention is not limited to the above-described embodiments. In the above-described embodiments, the fixture holding portion was exemplified as a mounting hole (fixing portion) for fixing the wiring fixture, a mounting tool main body for integrally holding the wiring fixture, or a decorative plate mounting portion for fitting a part (decorative plate) of the wiring fixture. However, since the types of wiring fixtures of the present invention are diverse, its form can be arbitrarily selected or changed according to the wiring fixture.

[0096] (2) The wiring fixture mounting tool of the present invention is not limited to the above-described embodiments. In the above-described embodiments, the decorative plate was directly attached to the mounting tool main body, but the present invention is not limited thereto. That is, the wiring fixture mounting tool may be attached to the mounting tool main body as a separate body and further include a mounting frame for attaching the decorative plate. The decorative plate may be attached to the mounting frame after the wiring fixture mounting tool is installed, or may be integrally attached to the mounting frame. And when the vertical and horizontal center positions of the decorative plate to be installed are determined as virtual reference points, the reference point of the wiring fixture mounting tool may be set on the mounting frame or the decorative plate, and the first alignment portion and the second alignment portion may be formed on the mounting frame or the decorative plate. That is, at the stage of alignment, by attaching the mounting frame to the mounting tool main body, it is possible to align the clamping position of the wiring fixture mounting tool.

[0097] (3) In the wiring fixture mounting tool of the present invention, both the first alignment portion and the second alignment portion may be provided in the insertion portion installed in the wall cavity.

[0098] (4) The ruled writing tool of the present invention is not limited to the above-described embodiment. The reference alignment portion and / or the first index portion of the ruled writing tool may not be a cross-shaped slit. Also, the third index portion may be omitted from the ruled writing tool. Further, the first index portion and / or the second index portion may not be a slit for inserting a pen, and may be formed so as to dent or damage the wall surface when pressed against the wall surface. Also, the decorative plate display portion may not be at the outer peripheral edge of the frame body, and may be an L-shaped slit indicating four corners, etc.

[0099] (5) The wiring device installation tool and / or the ruled writing tool of the present invention are not limited to the above-described embodiment. In the above-described embodiment, the shapes of the wiring device installation tool and the ruled writing tool are determined based on a rectangular through-hole, but the present invention is not limited thereto. For example, the through-hole formed in the wall may be circular, oval, elliptical, polygonal, any irregular shape, etc. The wiring device installation tool and the ruled writing tool can be appropriately redesigned by those skilled in the art according to the shape of the through-hole under the technical idea of the present invention.

[0100] The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as it belongs to the technical scope of the present invention.

Description of Reference Numerals

[0101] 10 Instrument installation structure 11 Wall 12 Through-hole 15 Wiring device 15a Instrument body 15b Instrument frame 16 Decorative plate 100 Wiring device installation tool 101 Installation tool body 101a Housing portion 101b Flange portion 102 Movable piece 103 Insertion portion 105 Mounting hole (instrument holding portion, fixing portion) 106 Decorative plate mounting portion (instrument holding portion) 107 Wall surface side contact part 108 Wall back side contact part 109 Driving mechanism 109a Operating part 109b Rotating operation shaft 109c Opening 109d Movement path 111 First alignment part 113 Second alignment part 150 Ruled line tool 151 Frame body 152 Reference alignment part 153 First index part 154 Second index part 155 Third index part 156 Decorative plate display part 157 Level 302 Inserted body C0 Virtual reference point C1 Reference point L1’ First virtual line L2’ Second virtual line L1 First ruled line L2 Second ruled line L3 Ruled line for forming through hole

Claims

1. A wiring device installer for installing a wiring device with respect to a through hole formed in a wall, comprising: an insertion part inserted into the back side of the wall; an instrument holding part that holds at least a part of the wiring device in a state where the front surface of the wiring device is exposed on the front side of the wall; a front side contact part of the wall that abuts on the peripheral edge on the front side of the wall of the through hole; a back side contact part of the wall that abuts on the peripheral edge on the back side of the wall of the through hole and, in cooperation with the front side contact part of the wall, clamps the wall at the peripheral edge of the through hole; an alignment mechanism that aligns a reference point of the wiring device installer with respect to a virtual reference point predetermined within a formation range of the through hole on a virtual plane along the wall surface based on a planned installation position of the wiring device; The alignment mechanism includes: a first alignment part for aligning with a first ruled mark that extends in a first direction on the virtual plane and overlaps a first virtual straight line passing through the virtual reference point; a second alignment part for aligning with a second ruled mark that extends in a second direction orthogonal to the first direction on the virtual plane and overlaps a second virtual straight line passing through the virtual reference point; The wiring device installer is characterized in that by simultaneously aligning the first ruled mark and the first alignment part and the second ruled mark and the second alignment part, the virtual reference point and the reference point coincide, and the installation position of the wiring device installer is determined.

2. The wiring device installer according to claim 1, wherein the virtual reference point is determined at a vertical and horizontal center position of an overall shape exposed on the front side of the wall of the wiring device when the wiring device is installed in the through hole.

3. The wiring device installer according to claim 1, wherein the first ruled mark and the second ruled mark are each formed at two locations sandwiching the through hole.

4. The wiring device installer according to any one of claims 1 to 3, wherein the front side contact part of the wall is formed from a contact surface having an annular shape, and the first alignment part and the second alignment part are provided on the front side contact part of the wall.

5. An installer main body including the instrument holding part and the front side contact part of the wall; further comprising a drive mechanism that, by an operation from the front side of the wall, relatively draws the front side contact part of the wall and the back side contact part of the wall toward each other through the wall and operates to clamp the wall with the front side contact part of the wall and the back side contact part of the wall. The installation tool body is characterized in that a decorative plate mounting portion for mounting a decorative plate that covers a gap between the installation tool body and the periphery of the through hole, which constitutes a part of the wiring device to be installed, is formed, as claimed in claim 4.

6. The installation tool for a wiring device according to claim 4, wherein the device holding portion has a fixing portion to which a device frame of the wiring device is fixed.

7. An installation tool body provided with the device holding portion and the wall front side contact portion, An insertion body provided with the insertion portion and the wall back side contact portion, A drive mechanism that operates to relatively draw the installation tool body and the insertion body closer to each other through the wall by an operation from the wall front side, and sandwich the wall with the installation tool body and the insertion body, further comprising: The wiring device installation tool according to any one of claims 1 to 3, wherein the first alignment portion is provided on the installation tool body, and the second alignment portion is provided at a position where it can be visually recognized from the wall front side of the insertion body through the through hole.

8. A scribing tool for forming a scribing mark on a wall surface when forming a through hole for installing a wiring device on the wall, A reference alignment portion that is aligned with a predetermined virtual reference point within a formation range of the through hole on a virtual plane along the wall surface in order to dispose the scribing tool at a scribing position, A first indicator portion for attaching a first scribing mark that extends in a first direction on the virtual plane and overlaps a first virtual straight line passing through the virtual reference point to a position outside at least a formation range of the through hole on the wall surface, A second indicator portion for attaching a second scribing mark that extends in a second direction orthogonal to the first direction on the virtual plane and overlaps a second virtual straight line passing through the virtual reference point to a position outside at least a formation range of the through hole on the wall surface, The scribing tool, comprising: a decorative plate display portion for displaying an installation range of a decorative plate attached to the wiring device installed on the wall front side in a state where the reference alignment portion is aligned with the virtual reference point.

9. The scribing tool according to claim 8, wherein the first indicator portion and the second indicator portion are arranged so as to be within an installation range of the decorative plate.

10. A wiring device installation apparatus for forming a through hole at a predetermined position on a wall and installing a wiring device with respect to the through hole, The scribing tool according to claim 8 or 9, A wiring device installation apparatus, comprising: the wiring device installer according to any one of claims 1 to 3.

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