JPH0340033Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a mounting device for a wiring device plate.

[Background technology]

Figure 2 shows an exploded view of a mounting device for wiring equipment plates used in hotels, etc. As shown in the figure, the mounting wall 1 has a rectangular equipment mounting hole with sides 2, 2, 3, and 3. 4, and a screw hole (not shown) is provided in the tongue protruding toward the inside of the hole in the middle of the two parallel sides 2, 2 forming the instrument attachment hole 4. The mounting frame 5 is a rectangular frame consisting of sides 6, 6, 7, and 7, and a mounting opening 9 is formed in the center thereof into which a wiring device 8, which is a changeover switch, is mounted. This mounting frame 5 has elongated screw insertion holes 10, 10 formed near the inner sides of the parallel sides 6, 6.
The mounting frame 5 is configured such that the two parallel sides 6, 6 are placed on the front mounting wall 1, and the tightening screws 11, 11 are screwed into the screw holes through the screw insertion holes 10, 10. It is then fixed. Reinforcing ribs 12 and 13 are formed on the mounting frame 5 to prevent deformation of the mounting frame 5 when the screw is too tightly screwed in. Engagement receiving pieces 14 protrude from the outer peripheral edge of the mounting frame 5 at four locations, and a plate 15 can be detachably attached via these pieces. As shown in FIG. 3, the engagement receiving piece 14 is raised outward with a step and is provided with a chamfered portion 16 at its tip.
On the other hand, dowel-shaped engagement protrusions 17 are provided on the inner peripheral surface of the plate 15 at corresponding locations. The engagement projection piece 17 expands at its opening side due to the elasticity of the plate 15, so that the engagement receiving piece 1
4 and engage the back side of it. In this way, the plate 15 is attached to the mounting frame 5. Removal of the plate 15 is also performed with one touch by the reverse action. Note that a through hole 19 for exposing the wiring device 8 is formed in the center of the plate 15.

The mounting frame 5 and plate 15 of such a mounting device
Since the plate 15 is manufactured according to regulations, the plate 15 can be attached to and detached from the mounting frame 5 without any problems as long as the tightening screws 11 are tightened normally. However, the tightening screw 1
1 is often tightened too strongly for some people. However, in the conventional device, the reinforcing ribs 12,
13 are provided piecemeal on two parallel sides 6, 6 and two other parallel sides 7, 7, and
Since the engagement receiving piece 14 was provided at a location where these reinforcing ribs 12 and 13 are not present, the strong tightening force distorts the mounting frame 5 and direct force is applied to the engagement receiving piece 14. As a result, it sometimes became difficult to attach and detach the plate 15.

[Purpose of invention]

In view of the above-mentioned disadvantages, it is an object of this invention to provide a mounting device for a plate for a wiring device, which allows the plate to be easily mounted and removed.

[Disclosure of invention]

In order to achieve the above object, the wiring device plate mounting device according to the present invention has a rectangular device mounting hole formed in the mounting wall, and screws in the vicinity of two parallel sides forming the device mounting hole. A rectangular mounting frame with a wiring device is provided on the front side of the device mounting hole, and by screwing a tightening screw into the screw tightening hole, the two parallel sides can be attached to the mounting hole. It is fixed against a wall, and the mounting frame has a wall near the inner side of each of the two parallel sides.
A pair of screw insertion holes into which the tightening screws are inserted, and a plurality of engagement receiving pieces protruding outward from the outer periphery and raised toward the front side from the frame surface are formed, and the engagement receiving pieces A plate is provided with an engaging protrusion at an inner peripheral position corresponding to the receiving piece, and the elasticity of the plate allows the engaging protruding piece to ride over the engaging receiving piece and engage with the back side of the engaging receiving piece. In the mounting device for a wiring device plate, the reinforcing ribs of the mounting frame are continuous along the four sides of the mounting frame, and the engaging receiving pieces of the mounting frame are arranged along the parallel sides of the mounting frame. The plate is arranged on the outer peripheral edge corresponding to the two sides, and the engagement projection piece of the plate is arranged on the side corresponding to the engagement receiving piece.

This invention will be explained in detail below based on drawings showing embodiments.

Fig. 1 shows an exploded view of the wiring device plate mounting device according to this invention, and parts and portions with the same symbols as in Fig. 2 are the same or equivalent parts as in Fig. 2. It represents something. As shown in the figure, with this device,
The reinforcing rib 18 has a semicircular cross section and protrudes toward the surface side, and has a square-shaped shape when viewed from above. That is, the reinforcing ribs 18 are continuously formed along the entire circumference of each side 6, 6, 7, and 7 of the mounting frame 5 along the slightly inner side thereof. The engagement receiving pieces 14 of the mounting frame 5 are formed in the same shape as shown in FIG. There is. The engaging protrusions 17 of the plate 15 are also formed in the same shape as in FIG. 3, but are arranged on the other two sides orthogonal to the sides in FIG. 3.

In this invention, since the plate mounting device is configured in this way, even if the tightening screw 11 is excessively tightened, the reinforcing ribs extending around the entire circumference prevent the mounting frame 5 from being distorted. In addition, since the engagement receiving piece 14 is arranged in a place where it does not directly receive the force from the tightening screw 11,
Deformation of the engaging protrusion 17 is more reliably prevented. Thereby, even if the tightening screw 11 is strongly tightened, the engagement protrusion 17 can be easily and reliably engaged with and removed from the engagement receiving piece 14, and the plate 15 can be easily attached and detached. Note that the wiring device may be something other than a changeover switch.

[Effect of idea]

As explained above, in the wiring device plate mounting device according to this invention, a rectangular device mounting hole is formed in the mounting wall, and screws are tightened near the two parallel sides forming the device mounting hole. A rectangular mounting frame with a wiring device is provided on the front side of the device mounting hole, and by screwing a tightening screw into the screw tightening hole, the two parallel sides are attached to the mounting wall. The mounting frame has a pair of screw insertion holes into which the tightening screws are inserted near the inside of each of the two parallel sides, and a pair of screw insertion holes protruding outward from the outer peripheral edge. A plurality of engagement receiving pieces are formed which are pushed upward from the frame surface to the front side, and a plate having an engagement protrusion at an inner circumferential position corresponding to the engagement receiving pieces is moved by its elasticity. In the mounting device for a wiring device plate in which the engaging protrusion crosses over the engaging receiving piece and engages with the back side of the engaging receiving piece, the reinforcing ribs of the mounting frame are attached to the four sides of the mounting frame. The engagement receiving piece of the mounting frame is disposed on the outer peripheral edge corresponding to the two parallel sides, and the engaging protruding piece of the plate is continuous along the inner side. Since it is characterized by being arranged on the side corresponding to the receiving piece, the plate can be easily attached and detached at any time.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a wiring device plate mounting device according to this invention, Fig. 2 is an exploded perspective view showing a conventional wiring device plate mounting device, and Fig. 3 is an engagement receiving piece. FIG. 3 is an enlarged cross-sectional view of a main part showing an engaged state of the engaging protrusion and the engaging protrusion. 1...Front mounting wall, 4...Equipment mounting hole, 5...
Mounting frame, 8... Wiring device, 10... Screw insertion hole,
11...Tightening screw, 14...Engagement receiving piece, 15...
Plate, 17... Engaging protrusion, 18... Reinforcement rib.

Claims (1)

[Claims for Utility Model Registration] (1) A rectangular device mounting hole is formed in the mounting wall, and screw holes are provided near two parallel sides forming the device mounting hole, and A rectangular mounting frame equipped with a wiring device is fixed to the front surface of the device mounting hole with its two parallel sides pressed against the mounting wall by screwing a tightening screw into the screw tightening hole. , the mounting frame has a pair of screw insertion holes near the inside of each of the two parallel sides, into which the tightening screws are inserted;
A plate having a plurality of engagement receiving pieces protruding outward from the outer periphery and raised toward the front side from the frame surface, and having an engagement projection piece at an inner circumferential position corresponding to the engagement receiving pieces. However, in a mounting device for a wiring device plate, in which the engaging projecting piece overcomes the engaging receiving piece and engages with the back side of the engaging receiving piece due to its elasticity, reinforcing the mounting frame. The ribs are continuous and run along slightly inside the four sides of the mounting frame, and the engagement receiving pieces of the mounting frame are arranged on the outer periphery corresponding to the two parallel sides, and the engagement receiving pieces of the mounting frame are arranged on the outer periphery corresponding to the two parallel sides and A mounting device for a wiring device plate, characterized in that a mating piece is arranged on a side corresponding to the engaging receiving piece. (2) The mounting device for a wiring device plate according to claim 1, in which the engaging receiving piece is raised with a step.