JP2003250207A - Plate for wiring tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate for a wiring tool which is excellent in external appearance even when the smaller number of wiring tools than the maximum number of pieces capable of attachment to a plate frame are attached to the plate frame. <P>SOLUTION: Side frame pieces 3a and 3b opposed to each other across the opening 2 of the main body 1 of the plate frame are provided, respectively, with a fixed beam 4 and a mobile beams 5. A pair of looking grooves 4a and 5a with which locking claws 61 of a tool main body 60 lock are provided by two sets in the fixed beam 4 and the mobile beam 5. The pitch of each locking groove 4a and 5a is equal to the pitch of the locking claw 61 of the tool main body 60. Locking the locking claw 61 to each set of the locking grooves 4a and 5a will enable two pieces of tool main bodies 60 to be attached at the same time, and locking the locking claws 61 into a pair of locking grooves adjoining each other in each set will enable the tool main body 60 to be attached at the center of the opening 2. Therefore, the external appearance improves even when the smaller number (one piece) of tool bodies 60 than the maximum number of pieces (two pieces) capable of attachment to the plate frame A is attached to it. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device plate for arranging a wiring device in an embedding hole provided in a construction surface such as a wall surface.

[0002]

2. Description of the Related Art Conventionally, an embedding box (switch box) is embedded in an embedding hole provided on a building surface such as a wall surface, and a plate frame to which wiring devices such as switches and outlets are detachably mounted is embedded hole. There is provided a wiring device plate in which the wiring device is mounted from the front side to the embedding box, and the decorative plate is attached to the front surface of the plate frame so that the wiring device can be embedded in a wall or the like with a good appearance.

For example, it has an opening for exposing a functional surface of an embedded wiring device (a surface on which a switch operating body is provided or a surface on which an outlet of an outlet is provided), and faces each other across the opening. A plate frame having an attachment means for attaching a wiring device to the side frame piece to cover the opening face side of the embedding hole provided on the construction surface, and an opening window for exposing the functional face of the wiring device. A decorative plate attached to the front surface of the plate frame to cover a front surface of the plate frame, and the mounting means locks a pair of locking claws provided on both end surfaces of the wiring module of one module formed to the standard size. A fixed beam portion having a plurality of sets of locking grooves and provided on the periphery of the opening of the plate frame, and a plurality of pairs of locking grooves for locking a pair of locking claws are provided to face the fixed beam portion. Flexible installation around the edge of the plate frame There is wiring accessories plate comprising a movable beam portion to be. In this conventional example, if the wiring device is inserted into the opening while the locking claw on one end face is locked in the locking groove of the fixed beam portion from the back side of the plate frame, the locking claw on the other end face is locked. When pushed, the movable beam portion bends outward, and the locking claw on the other end surface is engaged with the locking groove of the movable beam portion before the wiring device is attached to the plate frame. That is, the wiring device can be attached to the plate frame with one touch without using tools such as a driver.

[0004]

By the way, in the above-mentioned conventional example, a plurality of pairs of locking grooves are provided in each of the fixed beam portion and the movable beam portion. For example, two pairs of locking grooves are provided in the plate frame. 2 of 1 module, if provided
Wiring devices can be installed side by side. Here, it is not always necessary to arrange two wiring devices side by side, and only one wiring device may be arranged depending on the construction site.

However, when only one wiring device is attached to the plate frame for two pieces as described above, the center of the opening of the plate frame and the center of the wiring device do not coincide with each other, so that the external appearance is not good. There is a problem. Therefore, it is necessary to provide a plate frame for one piece by providing only one set of a pair of locking grooves. However, preparing one plate frame and a plurality of plate frames for the plate frame increases the number of types of dies and the like. As a result, manufacturing costs rise, and inventory management becomes more troublesome.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiring that looks good even when a number of wiring devices less than the maximum number that can be mounted on the plate frame are mounted. To provide an instrument plate.

[0007]

In order to achieve the above-mentioned object, the invention of claim 1 has a side frame having an opening for exposing the functional surface of an embedded wiring device and facing each other across the opening. A plate frame having an attaching means for attaching the wiring device to the piece and covering the opening surface side of the embedding hole provided on the construction surface, and an opening window exposing the functional surface of the wiring device and mounting on the plate frame. And a decorative plate that covers the front surface of the plate frame, and the mounting means locks a pair of locking claws provided on both end surfaces of the one-module wiring tool formed to the standard size. A plate frame that has a plurality of sets of grooves and is provided on the periphery of the opening of the plate frame, and a plate frame that has a plurality of pairs of locking grooves that lock a pair of locking claws and that faces the fixed beams. And a movable beam part that is provided flexibly around the opening of the Of the fixed beam portion and the movable beam portion, the pair of locking claws of the wiring device can be simultaneously locked in the pair of mutually adjacent locking grooves of different sets. When the wiring device is attached by locking the locking claws to the pair of mutually adjacent locking grooves of different sets of the locking grooves of each set, the wiring device is
Since one wiring device is arranged in the center of the mounting space for each piece, the appearance is improved even when the number of wiring devices less than the maximum number that can be mounted on the plate frame is mounted. As a result, it is not necessary to prepare a plurality of types of plate frames according to the number of attachments, the manufacturing cost can be reduced, and inventory management can be facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, a pair of locking grooves, which are different from each other in the locking grooves of each set of the fixed beam portion and the movable beam portion, are adjacent to each other. It is characterized in that at least one of the fixed beam part and the movable beam part is provided with a positioning mark for indicating the position of the device body when the wiring device is attached by locking the claws at the same time, and it can be attached to the plate frame. Even when installing a smaller number of wiring devices than the maximum number, it is possible to easily install them by using the positioning marks.

According to a third aspect of the present invention, in the first aspect of the present invention, the movable beam portion is arranged such that a gap is provided between the movable beam portion and the side frame piece so that both ends are connected to the side frame piece and straddle the gap. The flexible ribs are flexibly supported by the narrow supporting ribs, and the connecting portions of the supporting ribs with the movable beam portion are arranged closer to the center of the movable beam portion than the connecting portions of the supporting ribs and the side frame pieces. As a feature, the holding power of the wiring device when the number of wiring devices is smaller than the maximum number that can be mounted on the plate frame can be improved.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the box screw insertion hole through which the box screw for attaching the plate frame is inserted into the embedding box disposed in the embedding hole is formed in the plate frame. It is provided on the side frame pieces facing each other across the opening, and at least a part of the peripheral portion of the box screw insertion hole that substantially faces the opening across the box screw insertion hole is more than the other portion of the peripheral portion. The bottom surface of the box screw head comes into contact with this thickly formed part first, and the point of action of the force acting on the plate frame by tightening the box screw is only the thickly formed part. The deformation of the plate frame can be reduced with respect to the same fastening force, as compared with the case where the peripheral portions of the box screw insertion holes are formed to have the same thickness.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the box screw insertion hole has a large-diameter portion into which the head portion of the box screw can be inserted and a head portion of the box screw that communicates with the large-diameter portion. It is characterized by a long hole-shaped small diameter part that cannot be inserted, and by removing or inserting the box screw from the large diameter part of the box screw insertion hole, you can loosen it without removing the box screw from the embedding box The plate frame can be attached to the embedded box with.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the mounting bracket for mounting the plate frame to the embedding box disposed in the embedding hole and the side frame piece of the plate frame are provided so as to penetrate therethrough. The mounting screw that is inserted through the mounting screw insertion hole and the insertion hole provided in the mounting bracket, and when the mounting screw is screwed onto the tip of the mounting screw and the mounting screw is tightened, the plate frame is screwed from the rear side to the front side. And a tightening washer that tilts the mounting bracket in the direction of locking the embedded box or the building material provided with the embedded hole, and when tightening the mounting screw, it interferes with the main body of the wiring device and plate A deformation prevention protrusion that prevents the frame from being deformed is provided on the surface of the side frame piece that faces the wiring device in the vicinity of the mounting screw insertion hole, so that the plate frame is not excessively deformed by tightening the mounting screw. Can be prevented .

The invention of claim 7 is characterized in that, in the invention of claim 6, a curved surface for guiding the tool body to a mounting position when the wiring tool is mounted on the plate frame is formed on the deformation preventing projection. The installation work of equipment becomes easy.

According to an eighth aspect of the present invention, in the first aspect of the present invention, a regulating rib that is fitted into the gap between the movable beam portion and the side frame piece and regulates the bending of the movable beam portion is provided on the rear surface side of the decorative plate. It is characterized by protruding, and even if a large impact is applied to the wiring equipment because the movement of the movable beam portion is regulated by the regulation rib, the locking claw of the wiring equipment and the locking groove of the movable beam portion It becomes difficult to disengage the lock.

According to a ninth aspect of the present invention, in the eighth aspect, the decorative plate is formed in a shape and a size that covers the entire plurality of plate frames arranged in a row so as to be connected to each other. Opening windows are provided at the positions facing the openings, and restriction ribs are provided at positions on both sides of the opening window on the back side so as to project, and the restriction ribs are provided on the side frame pieces on the fixed beam side of the plate frame. It is characterized in that an escape hole is provided so that the decorative plate can be attached to the plate frame upside down or upside down.

According to a tenth aspect of the present invention, in the first aspect of the present invention, a projecting piece extending in the front-rear direction of the decorative plate is provided on the back side of the decorative plate, and an insertion hole through which the projecting piece is inserted is provided on the front surface of the plate frame. Is formed on the peripheral surface of the through hole, and a pressure contact portion for pressing the peripheral surface of the protruding piece inserted into the through hole to prevent the protruding piece from coming off is provided on the periphery of the through hole. Since the press contact part can be pressed over the range, even if the wallpaper is sandwiched between the construction surface and the decorative plate, it is pressed against the peripheral surface of the protrusion of the press contact part and the decorative plate is securely attached to the plate frame. be able to.

The invention of claim 11 is characterized in that, in the invention of claim 10, an inclined surface is formed on the peripheral surface of the projecting piece with which the pressure contact portion is in pressure contact so as to approach the pressure contact portion toward the tip. The direction of the force of the press contact portion acting on the inclined surface matches the direction of inserting the projecting piece into the insertion hole, and the decorative plate can be more firmly attached to the plate frame.

A twelfth aspect of the present invention is characterized in that, in the tenth aspect of the present invention, an engaging concave portion for engaging with the pressure contact portion is provided at the tip end portion of the projecting piece, and the wallpaper has a large thickness and the pressure contact portion protrudes. Even when pressure-contacted to the tip side of the piece, the decorative plate can be reliably attached to the plate frame by engaging the pressure-contact portion with the engagement recess.

According to a thirteenth aspect of the present invention, in the tenth aspect of the present invention, a pair of support portions for supporting the projecting piece along the pressure contact direction of the pressure contact portion are provided on the back side of the decorative plate, and the pressure contact portion is sandwiched between the projecting pieces. One of the supporting parts located on the opposite side to the other supporting part is formed to have a larger size than the other supporting part.Since stress tends to concentrate on the base part on the side opposite to the press contacting position of the press contacting part of the projecting piece, It is possible to prevent breakage of the projecting piece by forming one support portion located on the opposite side of the pressure contact portion with the piece in between and having a size larger than the other support portion.

According to a fourteenth aspect of the present invention, in the first aspect of the present invention, a projecting piece extending in the front-rear direction of the decorative plate is provided on the rear side of the decorative plate, and an insertion hole through which the projecting piece is inserted is provided on the front surface of the plate frame. And a plurality of engaging recesses that engage with the engaging projections protruding from the peripheral edge of the insertion hole in a concave-convex manner, and are arranged in a row along the front-back direction of the decorative plate at the tip of the projecting piece. Even if the wallpaper is sandwiched between the construction surface and the decorative plate, the decorative plate can be securely attached to the plate frame.

According to a fifteenth aspect of the present invention, in the invention of the fourteenth aspect, the inclination angles of the surfaces of the respective engaging concave portions which engage with the engaging convex portions are made equal. It is possible to make the strengths of engagement of the parts substantially the same.

The invention of claim 16 is the invention of claim 14 or 15.
In the invention described above, the convex portion located between the adjacent engaging concave portions is formed with an inclined surface that is inclined toward the base end of the projecting piece so as to approach the projecting piece. It is possible to easily disengage the recess.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) As shown in FIG. 1, the wiring device plate of this embodiment comprises a plate frame A and a decorative plate B. The plate frame A is shown in FIG.
As shown in FIG. 3, a plate body 1 formed of a synthetic resin material having an insulating property in a substantially rectangular frame shape is provided, and a functional surface of the wiring device (the tumbler switch S in the illustrated example) (operation of the tumbler switch S) is provided in the center thereof. A rectangular opening 2 is provided to expose the handle 62) to the front side. Also,
A strip-shaped fixed beam portion 4 and a movable beam portion 5 are provided on the periphery of the opening 2 so as to face each other with the opening 2 interposed therebetween. As shown in FIGS. 4 and 5, the movable beam portion 6 includes a pair of side frame pieces 3 facing each other with the opening 2 of the plate frame body 1 interposed therebetween.
The side frame piece 3b is separated from one of the side frames 3a and 3b, and is formed integrally with the fulcrum portion 6 on both sides of the side frame piece 3b so as to be swingable. Here, the synthetic resin forming the plate frame body 1 including the movable beam portion 5 and the fulcrum portion 6 is a flexible material, and the movable beam portion 5 supports the fulcrum portion 6 as a fulcrum with respect to the plate frame body 1. It is freely bendable.

The movable beam portion 5 is flexibly supported by a pair of support ribs 7, 7 formed narrowly so as to straddle a gap formed between the movable beam portion 5 and the side frame piece 3b. Here, as shown in FIG. 4, the connecting portion of the supporting ribs 7, 7 with the movable beam portion 5 is arranged closer to the center of the movable beam portion 5 than the connecting portion of the supporting ribs 7, 7 and the side frame piece 3b. There is. Further, the gap is divided into three parts (hereinafter, each part is referred to as slits 8a to 8c) by the support ribs 7 and 7, of which the outer ends of the slits 8a and 8c on both sides are the openings 2. It is bent in the shape of a crank toward. Further, a pair of elongated holes 9 are provided in the side frame piece 3b in the vicinity of the support ribs 7, 7 in order to make the movable beam portion 5 easy to bend.

On the other hand, on the surfaces of the fixed beam section 4 and the movable beam section 5 on the side of the opening 2, a pair of tumbler switches (hereinafter abbreviated as “switches”) S are provided so as to project from both side surfaces of the instrument body 60. A pair of locking grooves 4a, 5a in which the locking claw 61 locks
Is provided for each of the two sets, for a total of four. That is,
By locking the locking claws 61 provided on the tool body 60 to the pair of locking grooves 4a and 5a of each set, the tool body 60 is attached to the plate frame body 1 with the operation handle 62 exposed from the opening 2. Can be attached. Fixed beam section 4 here
In addition, at the tip of the movable beam portion 5, the locking claw 61 of the device body 60 is locked from the back side of the plate frame body 1 to the locking grooves 4a, 5a.
In order to guide each locking claw 61 to the locking grooves 4a and 5a when locking to a, guide portions 4b and 5b having tapered surfaces inclined toward the outside are provided (see FIG. 5). .
That is, when mounting the switch S on the plate frame A,
If the device body 60 of the wiring device is pushed from the back side to the front side of the plate frame body 1 with the locking claw 61 in contact with the tapered surfaces of the guide portions 4b and 5b, the locking claw 61 will be moved.
By moving along the taper surfaces of b and 5b, the locking grooves 4a and
It can be locked to 5a.

Further, the fixed beam portion 4 has an instrument removal hole 4c penetrating from the front side of the plate frame body 1 between the respective locking grooves 4a.
Are drilled at equal intervals, and the tip portion of a driver or a jig exclusively for removal is inserted into the tool removal hole 4c, and the tool body 60 is moved to the movable beam portion 5 side by the tip portion of the jig. If pushed, the movable beam portion 5 can be bent with a slight force according to the principle of leverage, and the locking groove 4a on the fixed beam portion 4 side and the instrument body 6
The device main body 60 can be removed from the plate frame main body 1 by releasing the locking with the locking claw 61 of 0.

By the way, the size of the opening 2 is based on the size of the device body 60 of the wiring device (switch S) shown in FIG. 1 as a standard size. The device main body of the module ".) A dimension approximately equal to twice the dimension in the width direction of 60, in other words, 1
The device main body 60 of the individual module is dimensioned so that two device main bodies 60 can be mounted side by side in the short width direction. Similarly, the pitch of the locking grooves 4a, 5a provided in the fixed beam portion 4 and the movable beam portion 5 of the plate frame body 1 is the pitch of the locking claws 61 projecting from the side surface of the instrument body 60 of one module. Is equal to. The above-mentioned reference dimension may be set to an appropriate value, and any wiring tool that conforms to such reference dimension can be commonly attached to the plate frame A.

Further, in this embodiment, the intervals between the adjacent engaging grooves 4a, 5a of the two sets of engaging grooves 4a, 5a are set to be equal. Therefore, by locking the pair of locking claws 61 of the tool body 60 to the respective groups of the locking grooves 4a and 5a, two tool bodies 60 of one module can be attached at the same time. A pair of locking grooves 4a,
By locking the pair of locking grooves 61 to 5a, the device main body 60 of one module can be arranged and attached in the center of the opening 2 as shown in FIG. In this way, when the locking claws 61 are locked to the pair of mutually adjacent locking grooves 4a and 5a of different groups of the locking grooves 4a and 5a of each group, and the instrument main body 60 is attached, it is equivalent to two pieces. Since one instrument body 60 is arranged in the center of the attachment space, the number of instrument bodies 60 (one in this case) smaller than the maximum number (two in this case) that can be attached to the plate frame A is set. The external appearance is improved even when attached, and as a result, it is not necessary to prepare a plurality of types of plate frames according to the number of attached pieces, the manufacturing cost is reduced, and inventory management is facilitated. Note that the operation handle 62 of the switch S normally has a width dimension substantially equal to the dimension of the one-module instrument body 60 in the short width direction (this is referred to as a “two-piece operation handle”). 1 when only one is installed in the center of the installation space for two plate frames A
The operability is improved by attaching an operation handle 62 (which is referred to as a “single operation handle”) 62 having a width dimension of two pieces of the instrument main body 60 of the individual module to the instrument main body 60.

Here, as shown in FIG. 5, a pair of locking grooves 4 of each set on the back side of the fixed beam portion 4 and the movable beam portion 5.
Between a and 5a, as described above, a mark M indicating the position when only one device main body 60 of the module is attached to the center of the opening 2 is formed by an appropriate method such as printing or engraving. ing. Therefore, the instrument body 60 can be easily attached by aligning the end surface of the instrument body 60 with these marks M.

Further, in this embodiment, the connecting portion of the supporting ribs 7, 7 with the movable beam portion 5 is arranged closer to the center of the movable beam portion 5 than the connecting portion of the supporting ribs 7, 7 with the side frame piece 3b. However, this makes it easier for the central portion of the movable beam portion 5 to be bent as compared with the both end portions when one instrument main body 60 is arranged and attached in the center of the opening portion 2 as described above. There is an advantage that the holding force of the instrument main body 60 can be improved by preventing it.

As shown in FIG. 4, on the side frame pieces 3a and 3b of the plate frame body 1, box screws (not shown) for attaching the plate frame A to an embedding box (not shown).
A box screw insertion hole 12 through which the box is inserted is provided substantially at the center. The box screw insertion hole 12 has a large diameter portion 12a having a larger diameter than the head portion of the box screw, a width dimension smaller than the head portion of the box screw and larger than the diameter of the body portion (screw portion) of the box screw, It is composed of a long hole-shaped small diameter portion 12b communicating with the large diameter portion 12a. Thus, the box screw can be pulled out from the plate frame body 1 through the large diameter portion 12a only by loosening the box screw without removing it from the embedded box, and when mounting the plate frame A, the large diameter portion 1 can be removed.
After inserting the box screw into the box screw insertion hole 12 from 2a, if the plate frame A is slightly rotated, the box screw moves from the large diameter portion 12a to the small diameter portion 12b and the plate frame A is temporarily fixed to the box screw. It Therefore, the plate frame A can be removed from or mounted on the embedding box simply by loosening the box screw from the embedding box, which is advantageous in that the construction work can be simplified.

Further, in the present embodiment, a portion of the peripheral edge portion of the box screw insertion hole 12 that substantially opposes the opening 2 with the box screw insertion hole 12 interposed (specifically, the box screw insertion hole 12 is elongated). A portion outside of a straight line that divides into two along the direction) 12c is fleshed to have a thickness larger than that of another portion (a portion inside the straight line) 12d of the peripheral edge portion of the box screw insertion hole 12. It is made thick. That is, a taper surface for guiding the box screw is formed on the peripheral edge of the box screw insertion hole 12 from the front opening edge of the box screw insertion hole 12 to the inner peripheral surface.
The tapered surface of the outer portion 12c is narrower than the tapered surface of the inner portion 12d. Therefore, when the box screw is inserted into the box screw insertion hole 12, the lower surface of the head portion of the box screw first comes into contact with the thick outer portion 12c, so that the action of the force acting on the plate frame A by tightening the box screw. Point is the outer part 1 above
2c, and almost no force acts on the inner portion 12d. That is, if the outer portion 12c and the inner portion 12d have the same thickness, the plate frame is largely deformed when the box screw is tightened. However, according to the present embodiment, the peripheral portion of the box screw insertion hole 12 has the same thickness. Plate frame A for the same fastening force as compared to the case of being formed with
Therefore, the switch S does not sink from the surface of the decorative plate B when the decorative plate B is attached to the plate frame A, and the appearance can be improved.

By the way, the plate frame A of this embodiment may be attached to a round-shaped embedded box (so-called C-shaped round box) (not shown) having a substantially circular opening. In some such embedded boxes, the plate frame A cannot be attached using a box screw. Therefore, in order to attach the plate frame A to the embedding box without using the box screw, in the present embodiment, the plate frame body 1 is appropriately attached to the embedding box or the construction material in which the embedding box is embedded. An attachment fitting 21 for attaching the plate frame body 1 is provided.

As shown in FIG. 1, FIG. 7 and FIG. 8, the fitting 21 includes a pair of leg pieces 21a, 21a which are connecting pieces 21.
They are connected by b and formed into a substantially U-shape. Connecting piece 21
An insertion hole 21c into which the mounting screw 23 is inserted is provided in b. Further, each leg piece 21a is bent outward at a substantially central portion, and a claw 21d protruding from the wall surface of the embedding box or the construction material is provided at the tip, and the leg end 21a is closer to the base end side than the bent portion. Retaining protrusions (not shown) are provided on the outer surface of the (connecting piece 21b side). The leg pieces 21a are inclined with respect to the connecting piece 21b from the normal direction of the connecting piece 21b to the outside (the side where the claws 21d are provided).

On the other hand, both side frame pieces 3c of the plate frame main body 1,
On the back side of 3d, inverted concave projections 11 are provided in a protruding manner, and the outer surfaces of these projections 11 are formed into a curved surface having a radius of curvature not larger than the inner radius of the C-shaped round box. . Further, a mounting screw insertion hole 13 is formed on the bottom surface of the recess 11a of the protrusion 11 so as to penetrate the front side of the plate frame body 1 and the mounting screw 23 is inserted, and a mounting metal fitting is provided on the inner surface of the recess 11a. A temporary holding groove (not shown) is provided to temporarily hold the fitting 21 by engaging with the holding projection of 21 in a concave-convex manner.

Then, the mounting screw 23 is attached to the plate frame main body 1
After being inserted into the mounting screw insertion hole 13 from the front side of the, and further inserted into the insertion hole 21c provided in the connecting piece 21b of the mounting bracket 21, by being screwed into the screw hole provided in the rectangular washer 22 As shown in FIG. 8, the mounting bracket 21 is mounted on the plate frame body 1. Before tightening the mounting screw 23, the tightening washer 22 and the recess 11 of the protrusion 11 are
Since a gap is created between the bottom surface of the mounting bracket 21 and the bottom surface of the mounting bracket 21, the connecting piece 21b of the mounting bracket 21 can be tilted so that the longitudinal direction of the leg pieces 21a of the mounting bracket 21 substantially coincides with the axial direction of the mounting screw 23. It is possible to temporarily hold the mounting member 21 in the plate frame body 1 in the above state by engaging the holding protrusions provided on the outer surface of the piece 21a with the temporary holding grooves.

Next, the procedure for disposing the plate frame A on the opening surface side of the embedding hole using the mounting bracket 21 will be described. First, the mounting bracket 21 is attached to the plate frame A to which the wiring device (for example, the switch S) is attached as described above to bring it into a temporary holding state. Then, the wiring box and the protrusion 11 of the plate frame body 1 are embedded in an embedding hole in an embedding box (C
Insert it in the mold box. At this time, the mounting bracket 21
Since it is temporarily held as described above, the claw 21d of the mounting bracket 21 does not project outward from the outer surface of the protrusion 11, and the protrusion 11 can be easily inserted into the embedding box. .

When the mounting screw 23 is tightened while the back surface of the plate frame body 1 is in contact with the construction surface, the tightening washer 22 projects from the rear surface side of the plate frame body 1 to the front surface side.
1 is screwed in a direction approaching 1, and the connecting piece 21b of the mounting bracket 21
Is pushed by the tightening washer 22 toward the bottom of the recess 11a of the protrusion 11. Finally, as shown in FIG. 8, the connecting piece 21b is finally attached to the recess 1 of the protrusion 11 by the tightening washer 22.
Both legs 21a of the mounting bracket 21 are pressed against the bottom surface of 1a.
Falls to the outside, and the claws 21d of the leg pieces 21a project outside the outer surface of the stand 11. Thus, the claws 2 of the two leg pieces 21a protruding outward from the outer surface of the protrusion 11 are formed.
1d protrudes from the inner peripheral surface of the embedding box, whereby the plate frame A is attached to the embedding box by the fitting 21. When the thickness of the peripheral wall of the embedding box is thin, the claws 21d break through the peripheral wall and project on the inner peripheral surface (construction material) of the embedding hole. By using the mounting bracket 21 in this manner, the plate frame A can be mounted on the embedded box and disposed on the construction surface without using the box screw.

By the way, when the claw 21d of the mounting bracket 21 is made to stand up against the peripheral wall of the embedding box by tightening the mounting screw 23, the protrusion 11 of the plate frame A is mounted on the protrusion 11 via the mounting bracket 21 and the mounting screw 23. Since a force in the direction of falling toward the opening 2 side acts, the plate frame body 1 is deformed by this force. Therefore, in the present embodiment, as shown in FIG. 7, a pair of deformation preventing protrusions 11b extending from the front to the rear is provided on the side surface (the surface facing the instrument body 60) of the protrusion 11 on the opening 2 side. That is, FIG.
And, as shown in FIG. 9, when the fixture main body 60 of one module is arranged in at least one space on both sides of the opening 2 and is attached to the plate frame A and the attachment screws 23 are tightened, the protrusion 11 The deformation prevention projection 11b interferes with the side surface of the instrument body 60 to prevent the projecting stand 11 from falling down, and it is possible to prevent the plate frame body 1 from excessively deforming.

Further, as shown in FIG. 9, the deformation preventing projection 11
An inclined surface 11c is formed at the tip of b so that the height of the protrusion 11b becomes lower toward the rear. That is, when the switch S is attached to the plate frame A, the instrument main body 60 is inserted into the opening 2 from the rear of the plate frame main body 1. However, when the switch S is attached to the mounting spaces on both sides of the opening 2, the deformation preventing protrusions are provided. The instrument body 60 is guided toward the opening 2 by the inclined surface 11c of 11b, which facilitates the mounting work. In addition, in the present embodiment, the inclined surface 11c that is inclined substantially linearly is used, but the same effect can be obtained even if it is a spherical surface or another curved surface shape.

By the way, in the four corners of the plate frame body 1,
The insertion hole 15 into which the projecting piece 53 projecting from the back surface of the plate body 50 of the decorative plate B is inserted, and the press contact portion 15a for press-contacting the peripheral surface of the projecting piece 53 inserted into the inserting hole 15 to prevent the projecting piece 53 from coming off. Is provided (see FIG. 4 (b)), and as will be described later, the protruding pieces 53 are inserted into these insertion holes 15 and the press contact portions 15 a are brought into pressure contact with the protruding pieces 53, whereby the front side of the plate frame A is provided. The decorative plate B can be detachably attached.

On the other hand, the plate body 50 of the decorative plate B
As shown in FIGS. 1, 2 and 10, the substantially rectangular main portion 51 that covers the front surface of the plate frame A and the entire peripheral edge of the main portion 51 are smoothly curved rearward with an insulating synthetic resin. And a side wall 52 formed as a substantially dish shape. The projecting pieces 53 are provided at four corners on the rear surface side of the main portion 51.
In addition, an opening window 51a exposing the functional surface of the wiring device attached to the plate frame A is provided substantially at the center of the main portion 51. Here, the width dimension between the opposing side walls 52 of the plate body 50 is made larger than each width dimension of the plate frame body 1. That is, when the decorative plate B is attached to the front side of the plate frame A arranged on the construction surface, the plate frame main body 1
Fits inside the plate body 50 of the decorative plate B,
The leading edge of the side wall 52 of the plate body 50 substantially comes into contact with the construction surface. As a result, the abutting surface of the plate frame A and the decorative plate B does not come out forward of the construction surface, and the abutting line of the both is almost invisible from the side surface, and the appearance can be improved.

Further, as shown in FIG. 10, a plurality of ribs 54 for abutting the end surface of the plate frame body 1 from the side and restricting the movement of the decorative plate B are arranged in a row on each side wall 52 of the plate body 50. I am doing it. That is, when the decorative plate B is attached to the plate frame A, the ribs 54 come into contact with the upper side surfaces of the plate frame main body 1 to prevent the decorative plate B from rattling with respect to the plate frame main body 1. Further, as shown in FIG. 10, on the back side of the plate body 50, a narrow reinforcing rib 55 is formed substantially parallel to the outer periphery of the side wall 52.
Are formed over the entire circumference, and by reinforcing the plate main body 50 (in particular, improving the strength against twisting) by the reinforcing ribs 55, the thickness of the plate main body 50 can be reduced. However, the reinforcing rib 55 does not necessarily need to be formed over the entire circumference, and may be formed at least in a portion inferior in strength to other portions.

Side wall 5 corresponding to one side of plate body 50
2 is provided with a pair of notches 56, and the notches 56
By inserting a jig (a tip of a driver or the like) into the plate main body 50 and applying a force to the front surface side of the plate main body 50, the projecting piece 53 of the plate main body 50 and the press contact portion 15a of the insertion hole 15 of the plate frame main body 1 are in a pressure contact state. Is released, and the protruding piece 53 is inserted into the through hole 15
The decorative plate B can be removed from the plate frame A to be removed.

By the way, in general, wallpaper (cloth) is often attached to the inner wall of a building such as a house, and an embedded wiring device such as a switch S is provided on the wall surface so as to be embedded in the wall surface. It is necessary to cut the wallpaper at the embedding hole to make a hole, but in this opening work, the wallpaper that closes the embedding hole cannot be cut cleanly and the remaining wallpaper sticks out around the embedding hole. There is. Normally, the protruding part of the wallpaper is sandwiched between the plate frame A and the wall surface, but for convenience of construction, the plate frame A is attached to the embedded box and placed on the wall surface, and then the wallpaper is pasted. In the case of (crossing work), the protruding portion of the wallpaper cannot be sandwiched between the plate frame A and the wall surface, and the wallpaper K is sandwiched between the decorative plate B and the wall surface as shown in FIG. It may happen. In the conventional wiring device plate, a claw is provided at the tip of the projecting piece projecting on the back side of the decorative plate, and the claw of the projecting piece inserted into the through hole of the plate frame is formed on the receiving portion formed on the peripheral edge of the through hole. The decorative plate was attached to the plate frame by locking the protrusions by engaging the concave and convex portions, but the back surface of the plate frame and the rear surface of the side wall of the decorative plate are almost in a state of being locked to the receiving portion of the nail. If the length of the protrusion is set to be flush, the nail of the decorative plate engages with the receiving portion of the plate frame due to the thickness of the protruding portion of the wallpaper K sandwiched between the decorative plate and the wall surface. There was a risk that it could not be stopped.

On the other hand, in this embodiment, as described above, the press contact portion 15a provided in the insertion hole 15 of the plate frame body 1 on the peripheral surface of the projecting piece 53 projecting from the back surface of the plate body 50 of the decorative plate B. Since the protruding piece 53 is prevented from coming off from the insertion hole 15 by being pressed against each other, the wallpaper K is not sandwiched between the wall surface and the decorative plate B as shown in FIGS. 12 and 16A. As a matter of course, even when the wallpaper K is sandwiched between the wall surface and the decorative plate B as shown in FIGS. 14 and 16 (b), a relatively wide range on the circumferential surface of the projecting piece 53 is achieved. Pressure contact part 15
The decorative plate B can be reliably attached to the plate frame A by pressing a to prevent it from coming off.

Further, in the present embodiment, as shown in FIG. 11, an inclined surface 53a is formed on the peripheral surface of the projecting piece 53 against which the pressure contact portion 15a is in pressure contact, which is inclined toward the tip toward the pressure contact portion 15a. There is. That is, the direction of the force of the press contact portion 15a acting on the inclined surface 53a is such that the projection 53 is inserted through the insertion hole 15a.
The decorative plate B can be attached to the plate frame A more firmly in conformity with the direction of insertion into the plate frame A. Further, at the tip of the projecting piece 53, the engagement recess 5 that engages with the press contact portion 15a
Since 3b is provided, the thickness of the wallpaper K is large as shown in FIGS. 14 and 15, and even when the pressure contact portion 15a is pressure contacted with the tip end side of the projecting piece 53, the pressure contact portion 15a is engaged with the engagement recess 53b. As a result, the decorative plate B can be securely attached to the plate frame A.

Further, in the present embodiment, as shown in FIG. 11, a pair of support portions 53c and 53d for supporting the projecting piece 53 along the pressure contact direction of the pressure contact portion 15a are provided on the back side of the plate body 50, and the projecting piece 53 is provided. The one support portion 53c located on the opposite side of the press contact portion 15a with the sandwiching therebetween is formed to be larger than the other support portion 53d (longer in the longitudinal direction of the projecting piece 53). That is, since stress is likely to be concentrated on the base portion of the protruding piece 53 on the side opposite to the pressure contact position of the pressure contact portion 15a, one support portion 53c located on the opposite side of the pressure contact portion 15a with the protrusion piece 53 interposed therebetween.
There is an advantage that the projecting piece 53 can be prevented from being damaged by forming the above into a size larger than the other supporting portion 53d.

By the way, on the back side of the plate body 50, as shown in FIG. 2B, three slits 8a to 8a provided in the plate frame body 1 when attached to the plate frame A are attached.
A pair of regulating ribs 58 fitted in the central slit 8b of the 8c are provided in a row (see FIG. 10). Here, the size of the regulating rib 58 is the slit 8 b of the plate frame body 1.
The size is set so that only a small gap is generated between the inner peripheral surface of the slit 8b and the regulating rib 58 in the state of being fitted in. That is, when the decorative plate B is attached to the plate frame A to which the wiring device is attached, the regulating rib 58
Is fitted into the slit 8b of the plate frame body 1 and only a slight gap is generated between the inner peripheral surface of the slit 8b and the regulating rib 58, so that the movable beam portion 5 of the plate frame body 1 moves (flexes). Will be regulated. As a result, the movement of the movable beam portion 5 is restricted as described above even when an impact such as an abnormally large force pulling out the plug inserted into the outlet is applied when the outlet is used as a wiring device. Therefore, the locking claw 61 of the wiring device and the locking grooves 5a, 4a of the movable beam portion 5 and the fixed beam portion 4 are hard to be disengaged.

By the way, the side frame piece 3a of the plate frame body 1
3 to 3d, a flat plate-shaped connecting projection 18 and a connecting projection 1
8 is a rectangular connecting groove portion 19 having a size capable of engaging in concave and convex.
And are installed side by side. Here, each side frame piece 3a-
The positional relationship between the connecting projection 18 and the connecting groove portion 3 in 3d is the same.

Therefore, for example, when two plate frames A are arranged side by side on the construction surface, the connecting projection 18 protruding from the side frame piece 3c of one plate frame A is connected to the other plate frame A side. By engaging the connecting groove portion 19 provided on the frame piece 3d, the side frame piece 3c of one plate frame A and the side frame piece 3d of the other plate frame A are brought into contact with each other as shown in FIG. , The adjacent plate frames A can be aligned with each other and can be connected visually. Moreover, since the two plate frames A are connected by the concavo-convex engagement of the connecting projections 18 and the connecting groove portions 19, the plate frames A are not displaced during construction or during use. In addition,
When a plurality of plate frames A are connected in this way, as shown in FIGS. 17 and 18, the plate frames A have dimensions corresponding to two plate frames A and the openings 2, 2 of each plate frame A are connected to each other. Correspondingly, a decorative plate B2 having two opening windows 51a, 51a is attached to the plate frame A so as to cover the front surface of the plate frame A.

By the way, as an embedded wiring device, there is a C-type outlet C to which a so-called C-type plug having a pair of circular pin-type blades parallel to each other is removably connected (FIG. 1).
9). This C-type outlet C is special, and unlike the switch S described above, the size of the instrument body does not conform to the standard size. Therefore, the plate frame A ′ to which the C-type outlet C is attached is also a dedicated type. The C-type outlet C and the dedicated plate frame A ′ are not the gist of the present invention, so a detailed description thereof will be omitted, but the dedicated plate frame A ′ also has the connecting projections 18 ′ and the connecting groove portions 19 ′. As shown in FIG. 19, two types of plate frames A and A ′ can be connected to the left and right to be arranged on the construction surface.

FIG. 20 shows a decorative plate B2 'used for connecting the switch S and the C-type outlet C, and one opening window 51a is larger than the other opening window 51a so as to fit the C-type outlet C. Except for the point that it is formed, it basically has the same configuration as the decorative plates B and B2 already described. Therefore, common components are assigned the same reference numerals and explanations thereof are omitted. As shown in FIG. 20 (a), a slit 57 having substantially the same shape and size as the peripheral edge of the other large opening window 51a is formed around the small opening window 51a corresponding to the switch S on the front surface of the plate body 50.
Are formed. That is, although a slight gap is generated between the opening window 51a of the decorative plate B2 ′ and the wiring device,
In this case, since the sizes of the left and right opening windows 51a are different, a line that appears on the front surface of the decorative plate B2 '(the above gap)
Is not uniform and looks bad in design, so
As described above, by forming the slit 57 having substantially the same shape and size as the peripheral edge of the large opening window 51a around the small opening window 51a, the lines appearing on the front surface of the decorative plate B2 ′ are aligned and the appearance is good. Is improving. In addition, in consideration of design uniformity, the slit 5 is also formed on the decorative plate B corresponding to one plate frame A.
7 is provided (see FIG. 1, etc.).

Here, as shown in FIG. 21, the two types of plate frames A and A'can be connected without being limited to the left and right arrangement relationship, so that the left and right of the decorative plate B2 'can be reversed. It is desirable that they can be commonly used in the arrangement relationship. However, on the back surface of the plate body 50, the regulating ribs 5 that fit into the slits 8b of the plate frame A are provided.
8'is provided, and when the decorative plate B2 'is horizontally inverted and attached, if the regulating rib 58' is on the fixed beam portion 4 side of the plate frame A, the regulating rib 58 'interferes and cannot be attached. Moreover, it is also impossible to prevent the wiring device from falling off, which is the original function of the regulation rib 58 '.

Therefore, as shown in FIG. 20 (b), a pair of regulating ribs 58 'are provided at positions on both sides of the plate main body 50' sandwiching the small opening window 51a, respectively. As shown, the side frame piece 3a of the plate frame A on the side of the fixed beam portion 4 is provided with an escape hole 24 for allowing the restriction rib 58 'to escape. Thereby, the plate frame A,
The decorative plate B2 'can be attached even if the decorative plate B2' is horizontally reversed with respect to A '.

(Embodiment 2) This embodiment is a plate frame A.
There is a feature in the mounting structure of the decorative plate B with respect to the above. Since the other structures are common to those of the first embodiment, common components are given the same reference numerals and the description thereof will be omitted.

In the first embodiment, since the wallpaper K is sandwiched between the wall surface and the decorative plate B,
The peripheral surface of the protruding piece 53 of the decorative plate B is an inclined surface 53a,
Pressure contact portion 15a provided in the insertion hole 15 of the plate frame body 1
Although the protruding piece 53 is prevented from coming off from the insertion hole 15 by being pressed against the plate body 50 of the decorative plate B,
When the thickness of the plate main body 50 is reduced, the pressure applied portion 15a warps the plate body 50 due to the force applied to the projecting piece 53.
There is a possibility that a gap may occur between the side wall 52 and the wall surface of the decorative plate B when the wallpaper K is not sandwiched as shown in FIG.

Therefore, in the present embodiment, as shown in FIG. 23, the engaging protrusions protruding to the peripheral edge of the insertion hole 15 of the plate frame body 1 (provided that they have the same shape and the same size as the pressure contact portion in the first embodiment). A plurality of engaging recesses 5 that engage with the concave and convex portions 15a
3b and 53e are arranged in a row along the front-back direction (left-right direction in FIG. 23) of the decorative plate B at the tip of the protruding piece 53. Here, in order to simplify the description, one closer to the tip of the protruding piece 53 will be referred to as a first engaging recess 53b, and the other will be referred to as a second engaging recess 53e.

As shown in FIG. 24A, when the wallpaper K is not sandwiched between the wall surface and the decorative plate B, the second engaging recess 53e of the projecting piece 53 is engaged with the engaging protrusion of the insertion hole 15. 15a is engaged to prevent the projecting piece 53 from coming off, and FIG.
In the state where the wallpaper K is sandwiched between the wall surface and the decorative plate B as shown in (b), the engagement protrusion 15a is engaged with the first engagement recess 53b of the projecting piece 53 to prevent it from coming off. As a result, the decorative plate B can be securely attached to the plate frame A. Moreover, the engaging recesses 53b, 53
Since the force applied by the engaging projection 15a that engages with e to the projecting piece 53 is not so great, even if the thickness of the plate body 50 of the decorative plate B is reduced, the plate body 5
0 does not warp, and there is no possibility that a gap will be created between the side wall 52 and the wall surface of the decorative plate B.

Here, as shown in FIG. 25, the projecting piece 5 is formed on the convex portion 53f located between the adjacent engaging concave portions 53b and 53e.
By forming the inclined surface 53g that is inclined toward the proximal end of the protrusion 53 toward the projecting piece 53, the engagement protrusion 15a easily gets over the protrusion 53f from the state of being engaged with the first engagement recess 53b. Therefore, the engagement protrusion 15a and the first engagement recess 53b can be easily disengaged, and the decorative plate B can be easily removed from the plate frame A.
Further, as shown in FIG. 26, the first and second engagement recesses 53
b and 53e, the inclination angle θ of the surface that engages with the engaging protrusion 15a
If 1 and θ2 are made equal, the engagement strengths of the engagement concave portions 53b and 53e and the engagement convex portion 15a can be made substantially equal.

[0061]

According to the first aspect of the present invention, there is provided an opening for exposing the functional surface of the embedded wiring device and mounting means for mounting the wiring device on the side frame pieces facing each other across the opening. A plate frame that covers the opening surface side of the embedding hole provided on the construction surface, and a decorative plate that has an opening window that exposes the functional surface of the wiring device and that is attached to the plate frame and covers the front surface of the plate frame. The mounting means has a plurality of pairs of locking grooves for locking a pair of locking claws provided on both end surfaces of the wiring device of one module formed to the standard size, and the mounting means has an opening portion of the plate frame. A movable beam provided flexibly around the periphery of the opening of the plate frame facing the fixed beam with a fixed beam provided on the periphery of the fixed beam and a plurality of pairs of locking grooves for locking the pair of locking claws. It consists of a beam part, and each set of fixed beam part and movable beam part Since the pair of locking claws of the wiring device can be simultaneously locked in the pair of adjacent locking grooves of different sets of the stop grooves, different sets of the locking grooves of each set are formed. When the wiring device is attached by locking the locking claws to the pair of locking grooves adjacent to each other,
Since one wiring device is placed in the center of the mounting space for each piece, the external appearance will be good even if the number of wiring devices that is less than the maximum number that can be mounted on the plate frame is mounted, and as a result Since there is no need to prepare a plurality of types of plate frames according to the number of attachments, the manufacturing cost can be reduced and inventory management can be facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, a pair of locking grooves, which are different from each other in the locking grooves of each set of the fixed beam portion and the movable beam portion, are adjacent to each other. Since at least one of the fixed beam part and the movable beam part is provided with a positioning mark that indicates the position of the device body when the wiring device is attached by locking the claws at the same time, Even when a small number of wiring devices are attached, there is an effect that they can be easily attached by using the positioning mark.

According to a third aspect of the present invention, in the first aspect of the present invention, the movable beam portion is configured such that a gap is provided between the movable beam portion and the side frame piece so that both ends are connected to the side frame piece and straddle the gap. Since it is flexibly supported by a support rib formed narrowly, the connecting portion of the supporting rib with the movable beam portion is arranged closer to the center of the movable beam portion than the connecting portion of the supporting rib and the side frame piece. There is an effect that the holding power of the wiring device can be improved when the number of wiring devices is smaller than the maximum number that can be mounted on the plate frame.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the box screw insertion hole through which the box screw for attaching the plate frame is inserted into the embedding box provided in the embedding hole is formed in the plate frame. It is provided on the side frame pieces facing each other across the opening, and at least a part of the peripheral portion of the box screw insertion hole that substantially faces the opening across the box screw insertion hole is more than the other portion of the peripheral portion. Since it is formed thick, the lower surface of the head of the box screw first comes into contact with this thick portion, and the point of action of the force that acts on the plate frame by tightening the box screw is only the thick portion. There is an effect that the deformation of the plate frame can be reduced for the same fastening force as compared with the case where the peripheral portion of the insertion hole has the same thickness.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the box screw insertion hole has a large-diameter portion through which the head portion of the box screw can be inserted, and the head portion of the box screw communicates with the large-diameter portion. Since it consists of a long hole-shaped small diameter part that cannot be inserted, you can remove the box screw from the large diameter part of the box screw insertion hole and loosen it without removing the box screw from the embedded box. There is an effect that can be attached to the embedded box.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the plate frame is provided so as to penetrate the mounting bracket for attaching the plate frame to the embedding box disposed in the embedding hole and the side frame piece of the plate frame. The mounting screw that is inserted through the mounting screw insertion hole and through the insertion hole provided in the mounting bracket, and when the mounting screw is screwed onto the tip of the mounting screw and the mounting screw is tightened, the plate frame is screwed from the rear side to the front side. And a tightening washer that tilts the mounting bracket in the direction of locking the embedded box or the building material provided with the embedded hole, and when tightening the mounting screw, it interferes with the main body of the wiring device and plate Since the deformation preventing projections for preventing the frame from being deformed are provided on the surface of the side frame piece facing the wiring device in the vicinity of the mounting screw insertion holes, it is possible to prevent the plate frame from being excessively deformed by tightening the mounting screws. Effect There is.

According to the invention of claim 7, in the invention of claim 6, the curved surface for guiding the main body of the wiring device to the mounting position when the wiring device is mounted on the plate frame is formed on the deformation preventing projection, so that the wiring device is mounted. This has the effect of facilitating the work.

According to an eighth aspect of the present invention, in the first aspect of the present invention, a regulating rib that is fitted into the gap between the movable beam portion and the side frame piece and regulates the bending of the movable beam portion is provided on the rear surface side of the decorative plate. Since it protrudes, even if a large impact is applied to the wiring device because the movement of the movable beam part is restricted by the restriction ribs, the locking claw of the wiring device and the locking groove of the movable beam part are locked. Has the effect of making it difficult to come off.

According to a ninth aspect of the present invention, in the eighth aspect, the decorative plate is formed in a shape and a size that covers the entire plurality of plate frames arranged in a row so as to be connected to each other. Opening windows are provided at the positions facing the openings, and restriction ribs are provided at positions on both sides of the opening window on the back side so as to project, and the restriction ribs are provided on the side frame pieces on the fixed beam side of the plate frame. Since the escape hole is provided so that the decorative plate can be attached to the plate frame upside down or left and right.

According to a tenth aspect of the present invention, in the invention of the first aspect, a projecting piece extending in the front-rear direction of the decorative plate is provided on the back side of the decorative plate, and an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame. In addition to the above, the press contact part that presses against the peripheral surface of the protruding piece inserted into the insertion hole to prevent the protruding piece from coming off is provided on the peripheral edge of the insertion hole, so that it extends over a relatively wide area of the peripheral surface of the protruding piece. Since the press contact portion can be pressed against each other, even if the wallpaper is sandwiched between the construction surface and the decorative plate, the decorative plate can be securely attached to the plate frame by pressing against the peripheral surface of the protrusion of the press contact portion. There is an effect.

According to the eleventh aspect of the present invention, in the tenth aspect of the present invention, since the inclined surface is formed on the peripheral surface of the projecting piece with which the pressure contact portion is in pressure contact, the inclined surface is inclined so as to approach the pressure contact portion toward the tip. The direction of the force of the press-contact portion that works is the same as the direction in which the projecting piece is inserted into the insertion hole, and there is an effect that the decorative plate can be more firmly attached to the plate frame.

According to the twelfth aspect of the present invention, in the invention of the tenth aspect, since the engaging recessed portion that engages with the pressure contact portion is provided at the tip end portion of the projection piece, the thickness of the wallpaper is large and the pressure contact portion has the tip end of the projection piece. Even when pressure-contacted to the side, there is an effect that the decorative plate can be reliably attached to the plate frame by engaging the pressure-contact portion with the engagement recess.

According to a thirteenth aspect of the present invention, in the tenth aspect of the present invention, a pair of support portions for supporting the projecting piece along the pressure contact direction of the pressure contact portion are provided on the back side of the decorative plate, and the pressure contact portion is sandwiched between the projecting pieces. Since one support part located on the opposite side is formed to have a size larger than the other support part, stress tends to concentrate on the base part on the side opposite to the pressure contact position of the pressure contact part of the projecting piece, so the projecting piece is sandwiched. By forming one support portion located on the opposite side of the press contact portion to a size larger than the other support portion, it is possible to prevent damage to the projecting piece.

According to a fourteenth aspect of the present invention, in the first aspect of the present invention, a projecting piece extending in the front-rear direction of the decorative plate is provided on the back side of the decorative plate, and an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame. And a plurality of engaging recesses that are engaged with the engaging projections protruding from the peripheral edge of the insertion hole in a row along the front-back direction of the decorative plate at the tip of the projecting piece. Even if the wallpaper is sandwiched between the decorative plate and the decorative plate, the decorative plate can be securely attached to the plate frame.

According to a fifteenth aspect of the present invention, in the invention of the fourteenth aspect, since the inclination angles of the surfaces of the respective engaging concave portions which engage with the engaging convex portions are made equal, the engaging concave portions and the engaging convex portions are engaged with each other. There is an effect that the strengths of the combination can be made substantially equal.

The invention of claim 16 relates to claim 14 or 15.
In the invention, since the convex portion located between the adjacent engaging concave portions is formed with the inclined surface that is inclined toward the base end of the protruding piece toward the protruding piece, the engagement convex portion and the engaging concave portion are engaged. There is an effect that it is possible to easily remove the case.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 shows the same as above, (a) is a front view of a plate frame with a switch attached, and (b) is a sectional view with a switch attached.

FIG. 3 shows the same as above, (a) is a front view showing a state where only one switch is attached, and (b) is a front view showing a state where two switches are attached.

FIG. 4 shows a plate frame of the above, in which (a) is a front view and (b) is a sectional view.

FIG. 5 is a rear view of the plate frame of the above.

FIG. 6 is a rear view of the plate frame with the switch attached in the above.

FIG. 7 is a cross-sectional view of the plate frame in the above.

FIG. 8 is a cross-sectional view of the plate frame with two switches attached to the above.

FIG. 9 is a side view showing the main part of the above.

FIG. 10 is a rear view of the decorative plate in the above.

FIG. 11 is a plan view showing a protruding piece of the decorative plate in the above.

FIG. 12 is a sectional view of the above.

FIG. 13 is a cross-sectional view showing a main part of the above.

FIG. 14 is a cross-sectional view showing a state where a wallpaper is sandwiched between the decorative plate and the wall surface of the same.

FIG. 15 is a cross-sectional view showing a main part of the above.

FIG. 16 shows the same as above, (a) is a partially omitted cross-sectional view of a state where the wallpaper is not sandwiched between the decorative plate and the wall surface, and (b) is a state where the wallpaper is sandwiched between the decorative plate and the wall surface. FIG.

FIG. 17 is an exploded perspective view of the case where two plate frames are connected to each other in the above.

FIG. 18 is a front view of the case where two plate frames are connected to each other in the above.

FIG. 19 is a front view showing a case where the plate frame and the plate frame having another configuration are connected to each other in the above.

FIG. 20 shows a decorative plate having another configuration, (a) is a front view and (b) is a rear view.

FIG. 21 is an explanatory diagram of a case where the plate frame and the plate frame having another configuration are connected to each other in the above.

FIG. 22 is a cross-sectional view showing the main parts of the second embodiment.

FIG. 23 is a plan view showing a protruding piece of the decorative plate in the above.

FIG. 24 shows the same as above, (a) is a partially omitted cross-sectional view of a state where the wallpaper is not sandwiched between the decorative plate and the wall surface, and (b) is a state where the wallpaper is sandwiched between the decorative plate and the wall surface. FIG.

FIG. 25 is a plan view showing a protruding piece of the decorative plate in the above.

FIG. 26 is a partially omitted plan view showing a protruding piece of the decorative plate in the above.

[Explanation of symbols]

A plate frame B makeup plate S switch (wiring equipment) 1 Plate frame body 2 openings 3a, 3b Side frame pieces 4 Fixed beam 4a Locking groove 5 movable beam 5a locking groove 60 instrument body 61 Locking claw

Continued front page    (72) Inventor Naoki Kanemoto             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F term (reference) 5G052 AA12 AA14 AA32 AA35 BB01                       BB10 HA01 HA14 HC03                 5G357 CA05 CB05 CC06 CD03

Claims (16)

[Claims] 1. An erection surface provided with an opening for exposing a functional surface of an embedded wiring device, and mounting means for mounting the wiring device on side frame pieces facing each other across the opening. A plate frame that covers the opening surface side of the embedded hole,
A decorative plate having an opening window for exposing the functional surface of the wiring device and attached to the plate frame to cover the front surface of the plate frame, and the mounting means is formed to a standard size.
A fixed beam portion provided at the periphery of the opening of the plate frame having a plurality of pairs of locking grooves for locking a pair of locking claws provided on both end faces of the wiring device of the individual module, and a pair of locking The movable beam portion is provided flexibly around the opening of the plate frame facing the fixed beam portion and has a plurality of pairs of locking grooves for locking the claws. A wiring device plate, wherein a pair of locking claws of a wiring device are formed so as to be simultaneously locked in a pair of mutually adjacent locking grooves of different sets of the locking grooves of each set. . 2. A wiring device is attached by simultaneously locking a pair of locking claws to a pair of mutually adjacent locking grooves of different sets of the locking grooves of each set of the fixed beam portion and the movable beam portion. The wiring device plate according to claim 1, wherein a positioning mark indicating the position of the device body at this time is provided on at least one of the fixed beam part and the movable beam part. 3. The movable beam portion is freely bendable by a supporting rib formed with a narrow width so that both ends are coupled to the side frame piece with a gap interposed between the movable beam portion and the side frame piece, and the gap extends across the gap. 2. The wiring device plate according to claim 1, wherein the connecting portion of the supporting rib and the movable beam portion is arranged closer to the center of the movable beam portion than the connecting portion of the supporting rib and the side frame piece. . 4. A box screw insertion hole, through which a box screw for attaching a plate frame is inserted into an embedding box arranged in the embedding hole, is provided in side frame pieces facing each other with the opening of the plate frame interposed therebetween. The at least part of a portion of the peripheral portion of the box screw insertion hole that substantially opposes the opening with the box screw insertion hole sandwiched is formed thicker than the other portion of the peripheral portion. Wiring equipment plate. 5. The box screw insertion hole includes a large-diameter portion through which the head of the box screw can be inserted and a small-diameter portion that is in communication with the large-diameter portion and into which the head of the box screw cannot be inserted. 5. The wiring device plate according to claim 4, wherein: 6. A mounting metal fitting for mounting the plate frame to an embedding box arranged in the embedding hole, and a mounting screw insertion hole penetrating the side frame piece of the plate frame, and as a mounting metal fitting. A mounting screw that is inserted through the provided insertion hole and an embedding box or embedding hole that is screwed onto the tip of the mounting screw and is screwed from the rear side to the front side of the plate frame when the mounting screw is tightened. And a lock washer that allows the mounting bracket to fall down in the direction of locking the construction material, and the deformation prevention protrusion that prevents the plate frame from deforming by interfering with the device body of the wiring fixture when the mounting screw is tightened. The wiring device plate according to claim 1, which is provided on a surface of the frame piece facing the wiring device in the vicinity of the mounting screw insertion hole. 7. The wiring device plate according to claim 6, wherein a curved surface for guiding the device body to the mounting position when the wiring device is mounted on the plate frame is formed on the deformation preventing projection. 8. The regulating rib, which is fitted into a gap between the movable beam portion and the side frame piece and regulates the bending of the movable beam portion, is projectingly provided on the back side of the decorative plate. Wiring equipment plate. 9. The decorative plate is formed in a shape and size that covers the whole of a plurality of plate frames arranged in a row so as to be connected to each other, and opening windows are provided at positions facing the openings of each plate frame. ., Restriction ribs are provided so as to project at positions on both sides of the opening window on the back side, and escape holes for allowing the restriction ribs to escape are provided in the side frame pieces on the fixed beam portion side of the plate frame. Item 8. A wiring device plate according to item 8. 10. A projecting piece extending in the front-rear direction of the decorative plate is provided on the back side of the decorative plate, an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame, and a projection inserted into the through hole is formed. 2. A press-contact portion for press-contacting the peripheral surface of the piece to prevent the projecting piece from coming off is provided on the peripheral edge of the insertion hole.
The wiring device plate described. 11. The wiring device plate according to claim 10, wherein an inclined surface is formed on the peripheral surface of the projecting piece with which the pressure contact portion is in pressure contact, the slope surface being inclined toward the tip toward the pressure contact portion. 12. The wiring device plate according to claim 10, wherein an engaging concave portion that engages with the pressure contact portion is provided at a tip end portion of the projecting piece. 13. A pair of support portions for supporting the protrusion along the pressure contact direction of the pressure contact portion are provided on the rear surface side of the decorative plate, and one support portion located on the opposite side of the pressure contact portion with the protrusion interposed therebetween is the other. The wiring device plate according to claim 10, wherein the wiring device plate is formed to have a size larger than that of the support portion. 14. A projecting piece extending in the front-rear direction of the decorative plate is provided on the back side of the decorative plate, an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame, and the projection hole is projected on the peripheral edge of the insertion hole. 2. The wiring device plate according to claim 1, wherein a plurality of engagement concave portions that engage with the engagement convex portions and the concave and convex portions are provided in a row along the front-back direction of the decorative plate at the tip end portion of the projecting piece. 15. The wiring device plate according to claim 14, wherein the inclination angles of the surfaces of the engagement concave portions that engage with the engagement protrusions are equal. 16. The convex portion located between the adjacent engaging concave portions is formed with an inclined surface that is inclined toward the base end of the protruding piece toward the protruding piece. Wiring equipment plate.