JPS5835381B2 - wiring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiring device, and relates to the attachment of a decorative board for an electrical component such as a dimmer, which is attached to an embedded box, electrical equipment, or the like.

[Technical background of the invention and its problems]

Generally, the decorative board attached to the mounting frame of this type of wiring device maintains safety by covering the live parts of the electrical components attached to the mounting frame, but conventionally, the decorative board is attached to the mounting frame using screws, etc. This has the disadvantage that assembly workability is poor because it is stuck to the surface.

Furthermore, it is not necessary to remove the decorative board once assembly is completed; rather, if the decorative board is removed, the live parts of the electrical components will be exposed, creating a danger, so a structure in which the decorative board cannot be easily removed is preferable.

[Purpose of the invention]

The present invention has been made in view of the above points, and it is possible to prevent the decorative board hung on the mounting frame from being removed by the screws that attach the case of the electrical component to the mounting frame, thereby improving safety without increasing the number of parts. The present invention provides a wiring device with improved performance.

[Summary of the invention]

The present invention prevents the decorative board attached to the mounting frame from being removed by attaching the case of the electrical parts to the mounting frame. a case for electrical components mounted on the mounting frame, and a decorative board mounted on the other surface of the mounting frame, such as the outer surface,
The mounting frame is formed with a latching hole having an insertion part end and a latching part continuous with the insertion part, and the threaded hole into which the latching hole is screwed, and the decorative board is formed with a latching hole having an insertion part end and a latching part continuous with the insertion part. A locking piece that is inserted from the recessed portion and is latched to the locking portion due to the displacement of this decorative board protrudes from one surface side, and a case is attached to the mounting frame on the inner surface and protrudes from the other surface of the mounting frame. A locking protrusion is formed that locks onto the tip of the screw and prevents the locking piece of the decorative plate from displacing from the locking portion of the locking hole toward the insertion portion, and The case is attached by inserting the locking piece of the decorative board into the insertion part of the locking hole from the surface side and locking it into the locking part, and then screwing it into the threaded hole from one side of the mounting frame to attach the case. The tip of the decorative board is made to protrude from the other side of the mounting frame and is locked to the locking protrusion of the decorative board, so that the locking piece prevents the decorative board from shifting toward the insertion part side of the locking hole. .

[Embodiments of the invention]

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes a mounting frame formed from aluminum into an elongated rectangular plate shape, and this mounting frame 1 has a first electrical component mounting portion 2 and a second electrical component mounting portion 3 formed therein.

This first electrical component mounting portion 2 is formed with a mounting piece portion 4 that is cut and bent toward the back side, and furthermore, a pair of decorative board latching holes 5 are formed in this first electrical component mounting portion 2. , 5 are formed.

Each of the decorative plate latching holes 5.5 has an insertion portion 6 and an arcuate latching portion T continuous with the insertion portion 6.

An auxiliary heat radiation part 8 bent toward the back side is integrally formed on one side edge of the first electrical component mounting part 2.

Further, the second electrical component mounting portion 3 of this mounting frame 1 is connected to the first electrical component mounting portion 3.
The second electrical component mounting portion 3 is integrally connected to the second electrical component mounting portion 2 via a stepped portion 9 projecting forward, and a mounting hole 10 is formed in the second electrical component mounting portion 3. A notch 11 is formed in the center of the .

Also, a mounting piece 1 is provided at the end of the second electrical component mounting portion 3.
2 is formed, and this mounting piece part 12 is formed with a step part 13 that protrudes from the second electrical component mounting part 3 toward the back side, and the edge of the notch part 11 is positioned in this step part 13. There is.

Screw insertion holes 15 are formed at both end edges of the mounting hole 10 of the second electric component mounting portion 3 of the brown octopus.

Also, mounting pieces 16 are formed at the ends of the first electrical component mounting portion 2 of the mounting frame 1, and decorative plate mounting portions 17. 17 is formed, and screw holes 18.1B are formed in each of the decorative plate mounting portions 17.17.

In addition, the first electrical component mounting frame 2 is formed with a long hole 19 for fixing the mounting frame 1 and a mounting hole 21 for a dimmer case 20 as a case for electrical components. A mounting screw hole 22 is formed in the electrical component mounting portion 3 at a position close to the first electrical component mounting portion 2 .

Further, the stepped portion 9.13 of the mounting frame 1 is formed to a height corresponding to the thickness of the auxiliary mounting frame 23 formed of a material other than aluminum, such as a steel plate.

This auxiliary mounting frame 23 has an electrical component mounting hole 24 formed therein, and the auxiliary mounting frame 23 has the screw insertion hole 1 of the mounting frame 1.
Screw holes 26 corresponding to No. 5 are formed at both end edges of the mounting hole 24.

Further, this auxiliary mounting frame 23 is formed with a screw insertion hole 27 corresponding to the screw hole 22 of the mounting frame 1.

Furthermore, protrusions 28 and 28 are formed on the edges of the auxiliary mounting frame 23 to engage with the edges of the notches 11 of the mounting frame 1.

Then, the auxiliary mounting frame 23 is fitted between the stepped portions 9 and 13 of the mounting frame 1, and the auxiliary mounting frame 23 is brought into contact with the back surface of the second electrical component mounting portion 3, and the mounting screw is inserted through the screw insertion hole 15. 2
9 are screwed together to fix the auxiliary mounting frame 23 to the mounting frame 1, and at this time, a long fixing hole 31 is formed in the gap 30 between the notch 11 and the projections 28, 28.

! A locking edge 32 is formed at the -(ltl) of the auxiliary mounting frame 23 of the octopus by bending it toward the back side.

Next, 34 is a decorative plate of a dimmer 35 which is a first electric component formed of synthetic resin, and this decorative plate 34 is inserted into the insertion portion 6 of the latching hole 5.5 of the mounting frame 1. An abbreviated locking piece 36.36 that is inserted and rotated to be locked to the locking portion 7
is installed protrudingly.

A locking protrusion 37 protrudes from the inner surface of the decorative board 34, and the locking pieces 36, 36 of the decorative board 34 are connected to the locking portions 7 of the locking holes 5, 5 of the mounting frame 1. .7, the dimmer case 2 is screwed into the screw hole 22 of the mounting frame 1.
The tip of the screw 39 to which the screw 39 is attached is engaged to prevent the decorative plate 34 from rotating in the return direction.

A knob insertion hole 40 is formed in the center of the decorative board 34.

A cylindrical knob 41 is rotatably inserted into the knob insertion hole 40, and an annular edge 42 formed on the outer periphery of the inner end of the knob 41 is locked to the periphery of the knob insertion hole 40, so that the knob 41 cannot be removed. It's stopped.

Next, the dimmer 35 will be explained. A semiconductor 43 for dimming control, such as a triac for controlling the phase of the dimmer 350, is attached to the mounting piece 4 of the mounting frame 1.

This semiconductor 43 is brought into contact with an insulating plate 44, and an insulating plate 46 and an insulating plate 44 are inserted into an insertion hole 45 formed in the mounting piece portion 4.
The insulating plates 44 and 46 and the semiconductor 43 are fixed to the mounting piece 4 by tightening the nut 48 onto the mounting screw 41.

Reference numeral 49 denotes an insulating substrate. The operating shaft 52 of the porium switch 51 is inserted into the 70-hole through hole 50, and a nut 54 is screwed and tightened to the bearing portion 53 of the operating shaft 52. Fix 51.

The operating shaft 52 of this polyum switch 51 has the knob 4.
1 are now combined.

Also, this polyurethane switch 51 has a printed wiring board 7.
A main circuit component 71 of the dimmer 35 is mounted and connected to this printed wiring board 70, and self-locking terminals 55, 55 are also mounted and connected to this printed wiring board 70.

In addition, the dimmer case 20 has mounting screw insertion holes 56.5.
6 is formed, and an electric wire connection portion 58.58 through which a self-locking terminal 55.55 and a locking piece 57.57 are inserted is formed inside.

Further, a release element 59 is interposed in the lock piece 57.57.

Further, a switch 60 serving as a second electrical component is attached to the auxiliary mounting frame 23 by fitting into the mounting hole 24 and caulking the caulking portion 24b through the caulking hole 24a.
The operating portion 61 of the 0 is protruded from the mounting hole 10 of the mounting frame 1.

Further, 62 is a decorative plate, and this decorative plate 62 is formed with an opening 63 through which the decorative plate 34 button and the operating portion 61 of the switch 60 project.

Further, screw insertion holes 65 are formed at both ends of the decorative plate 620.

Next, a method of assembling this embodiment will be explained.

A semiconductor 43 is attached to the mounting piece 4 of the mounting frame 1 via an insulating plate 44.
, and also attach the switch 60 to the auxiliary mounting frame 23 , make the switch 60 protrude from the mounting hole 10 , and attach the auxiliary mounting frame 23 to the second electrical component mounting part 30 step part 9 of the mounting frame 1 .
, 13 and is attached to the back surface of the mounting frame 1.

The switch 60 fixed to the auxiliary mounting frame 23 by the step portions 9 and 13 is flush with the mounting surface of the dimmer 35 of the mounting frame 1.

Next, the printed wiring board 70 is inserted into the dimmer case 20, and the self-locking terminal 55.55 and the locking piece 57°5T are inserted into the wire connection portion 58.58 with the release element 59 interposed therebetween.

Next, an insulating board 490 through hole 50 is connected to the operation shaft 52 of the polyurethane switch 51 connected to the printed wiring board 70.
, and screw the nut 54 onto the bearing part 53 to fix it.
A knob 41 is attached to this operating shaft 52.

Also, from the other surface which is the front side of the mounting frame 1, the latching hole 5,
Insert the locking pieces 36 of the decorative board 34 into the insertion parts 6, 6 of 5,
When the decorative plate 34 is rotated, the locking piece 36 is engaged with the latching portion 7, and the decorative plate 34 is latched to the other surface of the mounting frame 1.

Next, the screws 39.39 inserted through the screw insertion holes 56.56 of the dimmer case 20 are screwed into the screw holes 21.22 of the mounting frame 1, and the case 20 is attached to one side of the back side of the mounting frame 1. The knob 41 is made to protrude from the mounting hole 64 formed in the first electrical component mounting portion 2 of the mounting frame 1, the semiconductor 43 attached to the mounting piece 4 is inserted into the dimmer case 20, and the screw The tip of the screw 39 screwed into the hole 22 is projected to the other surface of the mounting frame 1, and the locking protrusion 37 of the decorative plate 34 abuts against the tip of the screw 39 to prevent rotation.

Next, the mounting frame 1 is attached to a wall or electrical equipment using screws inserted through the elongated holes 19 and 31, and the decorative plate 62 is fixed to the mounting frame 1 using screws 66 screwed into the screw holes 18.

The auxiliary heat radiation part 8 of the button mounting frame 1 is exposed to the outside of the dimmer case 20.

In the above embodiment, the decorative board 34 covering the dimmer has been described, but the electrical component is not limited to the dimmer.

〔Effect of the invention〕

According to the present invention, the locking piece of the decorative board is inserted and displaced from the insertion portion of the mounting frame to be latched to the latching portion, and the case of the electrical component is screwed onto one side of the mounting frame. and install it,
The tip of this screw that protrudes from the other side of the mounting frame is locked with the locking protrusion of the decorative board, and the decorative board prevents the locking piece from shifting in the direction toward the insertion part side of the locking hole. The screws that attach the case will prevent the decorative board from being removed, and the decorative board cannot be removed unless the electrical component case is removed.In particular, if the electrical component case is installed from the back side of the mounting frame, it will not be possible to remove it from the front. can improve safety,
The cut decorative board does not require screw fixing, does not increase the number of parts, has a simple structure, and improves the workability of installing the decorative board (the decorative board can be securely held in the mounting frame).

[Brief explanation of drawings]

Fig. 1 is a front view of a wiring device showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view of the same, Fig. 3 is an exploded perspective view of the same, and Fig. 4 is a decorative board mounting portion of the same. An exploded perspective view, FIG. 5 is a perspective view of the decorative thread as seen from the back side. 1... Mounting frame, 5... Latching hole, 6...
...Insertion part, 7...Latching part, 20...
... Electrical parts case, 34 ... Decorative board, 3
6... Locking piece, 3T... Locking protrusion, 3
9...Screw.

Claims (1)

[Claims] 1 Consists of a mounting frame, a case for electrical parts that is mounted on one side of the mounting frame with screws, and a decorative board that is mounted on the other side of the mounting frame, and the mounting frame has an insertion part and a A decorative board latching hole having a continuous latching part and a screw hole for screwing the screw are formed in the insertion part, and the decorative board is inserted through the insertion part of the latching hole and the decorative board is inserted into the decorative board through the insertion part of the latching hole. When the plate is displaced, a locking piece that is hooked to the hook portion is protruded to one side, and the case is attached to the mounting frame, and the locking piece is fixed to the tips of the screws that are protruded from the other side of the mounting frame. A wiring device characterized in that a locking protrusion is formed to prevent the locking piece of the decorative board from being displaced from the locking portion of the locking hole toward the insertion portion.