JPS6364124B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a mounting frame for fixing devices such as wiring devices and electrical devices to a construction surface or a main body.

Conventionally, in this type of mounting frame, as shown in FIG. 1, the locking portion a was bent and then the surface was plated, so that the locking portion a was sometimes deformed. especially,
In barrel plating, in which many parts are plated at once, the locking part a and the mounting part b of another mounting frame become entangled, and the mounting part b gets into the window hole c of another mounting frame, causing deformation.

This invention was made in view of the above-mentioned circumstances, and its purpose is to provide a method for manufacturing a mounting frame that can prevent deformation of the locking portion during plating and that can reliably assemble a container. is to provide.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 6, in which it is applied to a mounting frame for a wiring device.
Figure 2 shows the shape of a plate material when it is punched out, and shows a mounting part 3 with screw holes 1 for screws to be attached to construction materials and screw holes 2 for a plate to be attached to the surface, and a space between the mounting parts 3 and 3. and a plurality of locking parts 9 formed on the side piece 4 to assemble the container body 7 and the lid body 8 by fitting the protrusions 6 provided on the container 5.
At least a pair of locking portions 9 formed corresponding to the left and right side pieces 4 are connected to each other by two bridging pieces 10. Incidentally, as shown in FIG. 3, a single bridging piece 10a may be used. In this state, the mounting portion 3 can be prevented from entering the window hole 11 by making the width R larger than the distance S between the bridging pieces 10. Next, the surface is plated in the state shown in FIG. In this case, since the locking portions 9 formed on the left and right side pieces 4 are connected by the bridging piece 10, the locking portions 9 will not be deformed even when barrel plating is performed. After plating, the parts are aligned in a certain direction by a parts feeder X, as shown in FIGS. 4 and 5. Next, in step b, the bridging piece 10 is cut, and in steps c and d, the locking portion 9 is bent downward. Then, the recess 1 of the protrusion 6a provided in the lid body 8
The tongue piece 13 is placed on the protrusion 6b provided on the vessel body 7.
The container 5 is assembled by fitting the projection 6 by fitting the locking portion 9 into the container and then deforming the locking portion 9 into the recess 14 of the projection 6b. Reference numeral 15 denotes a claw piece that locks onto the construction material to prevent the mounting frame from shifting.

As explained above, in this invention, the bridging pieces 10 connecting the locking parts 9 are formed, a plate material is punched out, the surface is plated, and then the bridging pieces 10 are formed.
Since the mounting frame is made by cutting off and bending the locking part 9 downward, the locking part 9 will not be deformed during plating or transportation because it is connected by the bridging piece 10. In addition, since the container 5 is bent downward just before the container 5 is assembled, it is possible to prevent the occurrence of poor fitting due to deformation of the locking portion 9, and to obtain a mounting frame that allows the container 5 to be reliably assembled.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional example. 2 to 6 show an embodiment of the present invention, FIG. 2 is a perspective view, FIG. 3 is a partial perspective view, and FIG. 4 is a process diagram.
FIG. 5 is a layout diagram corresponding to the process diagram, and FIG. 6 is a side view showing the assembled state of the container. 1: Screw hole, 5: Container, 6: Protrusion, 7: Vessel body,
8: Lid body, 9: Locking part, 10: Bridging piece.

Claims (1)

[Claims] 1. Forming a plurality of locking portions of a mounting frame for assembling a container by fitting protrusions provided on the container, and forming a bridging piece connecting at least a pair of locking portions, and punching a plate material; A method of manufacturing a mounting frame by plating the surface, cutting the bridging piece, and bending the locking part downward.