JP3122183B2 - Plate frame for wiring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate frame for wiring equipment.

[0002]

2. Description of the Related Art FIG. 10 shows a part of a conventional plate frame for a wiring device of this kind, and this plate frame for a wiring device has an opening 1 for exposing a wiring device A at the center as shown in the drawing. The plate frame body 2 is provided with one of side pieces 3 located on both sides of the opening 1 and one of locking pieces projecting from both sides of the wiring device A first. A flexible piece 4 that is inserted into and locked to the
The other side of the plate frame main body 2 is provided with a fixing portion into which the other locking piece of the wiring device A is inserted and locked later. The bending piece 4 is formed on one of the side pieces 3 and has both ends connected to both ends of the plate frame main body 2 at both ends thereof. I have.

[0003]

However, in the above-mentioned conventional example, when the wiring device A is mounted at both ends of the opening 1, the bending of the bending piece 4 is small because the span of the flexible piece 4 is short.
However, there is a problem that the insertion property when inserting and locking the locking piece is poor. Further, since the flexible piece 4 is thinner than the thickness of the inner portion 3a between the gap 6 between the side pieces 3 and the opening 1, the molding material flows first to the inner portion 3a when the plate frame body is formed. As a result, a weld is generated on the flexure piece 4 side, and there is a problem that the flexure piece 4 is broken from the weld portion when the wiring device A is mounted.

Further, a bridging piece is provided between the bending portion 4 and the inner portion 3a of the side piece 3 between the gap 6 and the opening 1 corresponding to the boundary between both ends of the central device mounting position of the opening 1. 7, and a separate bridge is formed between the flexure piece 4 on the opposite side of the joining point of the bridging piece 7 and the outer portion 3b of the side piece 3 parallel to the inner portion 3a via the gap 6. The slits 9 are integrally formed by the pieces 8, and the slits 9 are formed in the outer portion 3 b in both end directions around the connection point of the another bridged piece 8 with the outer portion 3 b. However, since the length of the slit 9 is short, When attaching the wiring device A to the center of the opening 1, there is a problem that the bending piece 4 is hardly bent, and the insertion property of the locking piece is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it easy to mount a wiring device at both ends of an opening of a plate frame body.
And weld the deforming pieces during the molding of the plate frame body to provide a wiring device for plate frame deflection piece it is difficult to break when mounting the to wiring accessories prevented.

Further, the object of the present invention described in claim 2 is, in addition to the object of the present invention described in claim 1, in addition to the object of the invention described in claim 1, wherein a wiring device is easily mounted at the center of the opening of the plate frame body. To provide a plate frame.

[0007]

According to a first aspect of the present invention, a decorative plate is mounted on a front surface and an opening for exposing a wiring device is provided at a center portion.
A plate frame body made of synthetic resin is formed to cover the opening side of the embedding hole, and one of locking pieces protruding from both sides of the wiring device is provided on one of side pieces of the plate frame body located on both sides of the opening. previously provided deforming pieces deflectable inserted and locked, only setting a fixed portion other engaging piece of the other wiring apparatus of side pieces of the plate frame body is inserted and locked later, the plate frame body to be formed on one side piece in the gap was positioned in the both end pieces of the plate frame body at both ends, only setting the integral connection with deflectable by the the deflection piece across the back of both ends of the gap, and the gap Between the openings
The cross section of the inner portion of the side piece is formed in an inverted L shape,
It is thinner than the cross section .

According to a second aspect of the present invention , the inside of the side piece between the gap and the opening corresponding to the boundary between both ends of the central instrument mounting position of the opening and the flexible piece are bridged. Together with one piece, the bending piece on the opposite side of the connection point of the bridge piece, and the outside portion of the side piece parallel to the inside portion through the gap, another body is integrally connected with another bridge piece, A long slit is formed in the outer portion, which extends toward both ends around a connection point of the another bridge piece to the outer portion.

[0009]

According to the first aspect of the present invention,
In a gap formed on one of the side pieces of the plate frame main body and having both ends located within both end pieces of the plate frame main body, a flexible piece is provided which is integrally connected to both ends of both ends of the gap and is capable of bending. So when installing wiring equipment at both ends of the opening,
The length of the flexure piece can be increased, and the flexure amount of the flexure piece can be increased, thereby facilitating insertion of the locking piece of the wiring device. Also, the inner part of the side piece between the gap and the opening
The cross section is formed in an inverted L shape, so that it is thinner than the cross section of the flexure piece.
Therefore, when molding the plate frame body,
The flow can flow first to one side of the flexure, so that the flexure
No bending occurs, and the flexure pieces are difficult to crack when installing wiring equipment.
It becomes.

According to a second aspect of the present invention, the inner portion of the side piece between the gap and the opening, which corresponds to the boundary between both ends of the central device mounting position of the opening, and the bending piece. The two pieces are integrally joined with a bridging piece, and another bending piece is used to integrally connect the flexible piece opposite to the joining point of the bridging piece and the outer part of the side piece parallel to the inner part through the gap. Since a long slit is formed in the outer portion, which is joined to each other, and extends in both ends around the connection point of the another bridge piece to the outer portion, the flexible piece in the slit portion is easily bent, and the wiring is formed in the center of the opening. When installing the equipment,
Insertion of the locking piece of the wiring instrument becomes easy.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 7, and 8, the plate frame main body 2 made of a synthetic resin is formed flat, and has a size capable of mounting three wiring devices A having a size equivalent to one standardized wiring device module. The opening 1 is provided at the center. The plate frame main body 2 has a bending piece 4 on one of the side pieces 3 on both sides, and has a fixing portion 10 on the other 3 ′.

A wiring device A such as an outlet is detachably mounted on the plate frame main body 2 with its front surface exposed in the opening 1. Wiring device A has body 11a and cover 11b
Are joined by a pair of metal assembly frames 12, and the assembly frame 1
A pair of locking pieces 13 protrude from the side end surfaces of the two. The wiring device A has a size equivalent to one standardized wiring device module, and the opening 1 of the plate frame main body 2 has a size to which three wiring devices A can be mounted.

The plate frame body 2 is installed in front of an opening surface of an embedding box embedded in a wall or the like.
At the top and bottom of the plate frame body 2, a long and circular mounting hole 1 is provided.
4 and 15 are respectively drilled. The side piece 3 of the plate frame main body 2 has an inner portion 3a and an outer portion 3b integrally formed in parallel with a gap 6 therebetween, and the two portions 3a, 3b
The both ends are integrally connected to the both end pieces 5 of the plate frame main body 2 at the back end of the gap 6 therebetween, thereby forming the flexible bending piece 4 having flexibility. As shown in FIG. 6, the cross section of the inner portion 3a of the side piece 3 is formed in an inverted L shape in cross section, and is thinner than the flexible piece 4, and the resin material is thicker than the inner portion 3a during molding.
It flows first to the thick bending piece 4 side, and as a result, the well
Can be prevented from occurring .
Also, both ends of the gap 6 are longer than before so as to penetrate into the both end pieces 5 of the plate frame main body 2, so that the span of the bending piece 4 is increased and the amount of bending is increased.

Two portions 3 of the side piece 3 at two places of the bending piece 4 corresponding to both ends of the wiring device insertion position at the center of the opening 1
The inner surfaces of a and 3b are connected by bridging pieces 7 and 8. A long slit 9 is formed in the outer portion 3b in both end directions centering on the joining point of the bridging piece 8, and the inner portion of the slit 9 is made thin as shown in FIG. 8 make the bending piece 4 easily bend in the lateral direction.

A pair of recesses 16 are formed on the inner surface of the bending piece 4.
As shown in FIG. 1, as shown in FIG. 1, the rear side of the recess 16 is formed as a step 17 to which the locking piece 13 of the wiring device A is locked. The rear end of the bending piece 4 is formed so as not to protrude from the rear surface of the plate frame main body 2. Plate frame body 2
A fixing portion 10 is formed on the side piece 3 '. That is,
As shown in FIG. 2, a fixing rib 19 is integrally formed on the back surface of the side piece 3 '. A recess 20 is formed in the side piece 3 ′ so as to be inserted into the fixing rib 19, and three sets of a pair of steps 21 are formed on the back side of the recess 20. The fixing rib 19 is formed so as to protrude from the rear surface of the plate frame main body 2. As shown in FIG. 1B, an inclined surface 22 is formed on the side surface of the fixing rib 19 and on the back corresponding to the step portion 21, and the connection surface of the wiring device A is formed on the inclined surface 22. When the stop piece 13 abuts and follows, the bending piece 4
Is bent outward.

The front surface of the plate frame body 2 is recessed one step from the periphery, and a decorative plate 23 is detachably mounted on the front surface. That is, a plurality of engaging pieces 24 are integrally formed on the rear surface of the decorative plate 23 to protrude therefrom.
It is perforated. An opening window 26 for exposing the front surface of the wiring device A is provided at the center of the decorative plate 23. In this embodiment, a decorative plate 23 for one wiring device corresponding to each opening 1 is used. Therefore,
Depending on the number of wiring devices used, a decorative plate 23 provided with opening windows 26 corresponding to the used number may be used.

Between the pair of recesses 20 of the side piece 3 'of the plate frame main body 2, a driver 2 for releasing the wiring device A is provided.
An insertion hole 29 for inserting the hole 8 is provided penetrating in the front-rear direction. As shown in FIG. 9, a chamfered portion 30 is provided on the inner side surface of the insertion hole 29 to increase the degree of freedom of the driver 28. As shown in FIGS. 1 and 4, protrusions 18 are formed on both sides of the step portion 21 of the fixing rib 19, and the locking piece 13 of the wiring device A is inserted into the step portion 21 by the protrusion 18. After fitting of the wiring device A when locked, rattling and center displacement are prevented.
Further, as shown in FIG. 6, a projection 43 is integrally provided on a side surface where the bending piece 4 and the outer portion 3b face each other, and is provided in the slit 27 between the bending piece 4 and the inner portion 3a. Even if the driver 28 mistakenly inserts the tip of the driver 28 when removing the wiring device A, the driver 28 can be prevented from being erroneously inserted because the tip of the driver 28 hits the projection 43.

Next, an operation of attaching and detaching the wiring device A to and from the plate frame main body 2 will be described. First, as shown in FIG.
The one locking piece 13 of the wiring device A is bent so that the step 17 on the side of the bending piece 4 is formed.
And the other locking piece 13 is moved to the front side along the inclined surface 22 of the fixing rib 19. The wiring device A moves to the bending piece 4 side by abutting along the inclined surface 22. For this reason, one locking piece 13 urges the bending piece 4 outward to bend. Then, when the other locking piece 13 gets over the inclined surface 22 and is inserted and locked in the step portion 21, the wiring device A returns to the right side in FIG. While being locked to the steps 17, 21,
The wiring device A is mounted on the plate frame main body 2 in contact with the back surface of the plate frame main body 2. In other words, one of the locking pieces 13 of the wiring device A is first inserted into the movable bending piece 4 side, and the movable bending piece 4 is pushed outward by the fixed inclined surface 22 and fitted therein. That is, the bending piece 4 on the side of the step 17 for inserting and locking the locking piece 13 first is bent in the lateral direction, and the fixing rib 19 on the side of the step 21 to be inserted later is not bent.

Next, when the wiring device A is detached from the plate frame main body 2, the following operation is performed. That is, the driver 28 is inserted into the insertion hole 29 from the front, and the tip of the driver 28 is connected to the assembly frame 12 between the locking pieces 13 as shown in FIG.
, And the driver 28 is tilted outward as shown by a dashed line in the figure. Then, the wiring device A is urged toward the bending piece 4 side by the driver 28, and the locking piece 13 is removed from the step portion 22, so that the wiring device A is connected to the plate frame body 2.
It can be easily removed from. At this time, the chamfer 3
Since the space is formed by 0, the degree of freedom of the driver 28 can be increased, and the driver 28 can be easily removed. Note that, without using the driver 28, the wiring device A can be released by manually shifting the wiring device A to the bending piece 4 side.

[0020]

According to the first aspect of the present invention, both ends are formed in one of the side pieces of the plate frame main body and both ends are located in the both end pieces of the plate frame main body. Since the flexure pieces which are integrally connected and can be flexed are provided, the span of the flexure piece can be made longer when mounting the wiring device at both ends of the opening, and the flexure amount of the flexure piece can be increased, so that the wiring This has the effect of facilitating insertion of the locking piece of the device.

[0021] Also, by forming the cross section of the inner portion of the side piece between the gap between the opening in the inverted L-shaped, since the thinner than the cross section of the deflection piece, at the time of molding of the plate frame body, The resin material flows first to one side of the flexure that is thicker than the thickness of the inner part of the side piece.
Therefore, weld does not occur on the bending piece,
There is an effect that the bending piece is less likely to break when the wiring device is mounted.

According to a second aspect of the present invention, the inner portion of the side piece between the gap and the opening corresponding to the boundary between both ends of the central device mounting position of the opening, and the bending piece. The two pieces are integrally joined with a bridging piece, and another bending piece is used to integrally connect the flexible piece opposite to the joining point of the bridging piece and the outer part of the side piece parallel to the inner part through the gap. Since a long slit is formed in the outer portion, which is joined to each other, and extends in both ends around the connection point of the another bridge piece to the outer portion, the flexible piece in the slit portion is easily bent, and the wiring is formed in the center of the opening. When installing the equipment,
This has the effect of facilitating insertion of the locking piece of the wiring device.

[Brief description of the drawings]

FIG. 1A is a front view of a plate frame main body according to an embodiment of the present invention. (B) is a bottom view of the plate frame main body according to one embodiment of the present invention, which can be broken.

FIG. 2A is a rear view of a plate frame main body according to one embodiment of the present invention. (B) is a side sectional view of the plate frame main body of one embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a fixing portion of the plate frame main body according to one embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a plate frame main body according to one embodiment of the present invention.

FIG. 5 is an enlarged front view of a main part of the plate frame main body according to one embodiment of the present invention.

FIG. 6 is an enlarged perspective view of a main part of the plate frame main body according to one embodiment of the present invention, which is broken.

FIG. 7 is an exploded perspective view of one embodiment of the present invention.

FIG. 8 is an explanatory view for attaching a wiring device according to an embodiment of the present invention.

FIG. 9 is an explanatory view of removing a wiring device according to an embodiment of the present invention.

FIG. 10 is a perspective view of a conventional example in which a part can be omitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening part 2 Plate frame main body 3 Side piece 3a Inside part 3b Outside part 3 'Side piece 4 Flexure piece 5 Both ends piece 6 Gap

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takao Ota 2856 Shiratsuka-cho, Tsu-shi, Mie Asahi Denki Kogyo Co., Ltd. References JP-A-2-311113 (JP, A) JP-A-3-77215 (JP, U) JP-A-3-1619 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB (Name) H02G 3/02 H01H 23/04

Claims (2)

(57) [Claims] A decorative plate is mounted on a front surface, a central portion has an opening for exposing a wiring device, and a plate frame body made of synthetic resin is formed to cover an opening surface side of an embedding hole. One of the side pieces of the plate frame body located on both sides is provided with a bendable flexible piece into which one of the locking pieces protruding from both sides of the wiring device is inserted and locked first, and the other of the side pieces of the plate frame body. other only set a fixed portion engaging pieces are inserted into and engaged later, the gap formed on one side piece of plate frame body is positioned within both end pieces of the plate frame body at both ends of the wiring devices to Within
A flexible piece is provided at the back of both ends of the gap so that both ends are integrally connected and can be bent, and an inner portion of a side piece between the gap and the opening is provided.
Is formed in an inverted L-shape so that it is thinner than the cross section of the flexure piece.
A plate frame for wiring equipment, characterized in that: 2. A boundary between both ends of a central instrument mounting position of the opening.
Inside the side piece between the gap and the opening corresponding to the position
The part and the flexible piece are joined together with a bridging piece.
The bending piece on the side opposite to the joining point of the bridge piece is
Between the inner part and the outer part of the side piece in parallel
The outer part of this another cross-linked piece is joined together by another
Extended toward both ends around the point of attachment to the position
The wiring device plate frame according to claim 1, wherein a slit is formed in the outer portion .