JPS5821293Y2 - Flash plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for installing a synthetic resin flash plate.

This type of flash plate generally has a continuous recessed wiring device insertion window and a pair of mounting screw insertion holes,
The screw is inserted into this screw insertion hole to attach it to the surface, and the frame is then attached to the frame.

In other words, the mounting frame is generally made of an elongated plate-shaped body, and the mountings that are spaced apart and facing each other are mounted on the surface. A pair of screw holes are formed for mounting the plate.

With this product, there were no problems in attaching the flash plate to the frame.

However, recently a wiring device called for large square has been developed,
For mounting, frame and flush plate models were developed.

The mounting system developed in this way is that the frame is mounted on the surface, the pitch of the screw holes for mounting remains the same as before, and the pitch of the screw holes for plate mounting is increased, and the pitch of the screw holes for plate mounting is increased to the outside of the above screw insertion hole. The flash plate is formed with screw insertion holes for installation at dimensional intervals that match the flush plate.

However, in this case, there are disadvantages in that the mounting of the plate and the mounting on the fixture are not only very troublesome but also impossible because the holes are misaligned.

This will be explained with reference to FIGS. 1 to 3.

When installing the wiring device 1 on the mounting surface 2, a notch hole 3 is provided in the surface 2 for installing the wiring device.

The wiring device 1 is installed in advance by bridging this notch hole 3, and the frame 4 is installed on the surface 2 by inserting the screw 5 into the screw insertion hole.

Next, attach the flash plate 6 to the frame 4,
Insert the screw 8 into the screw insertion hole 7 and attach it to the screw hole 9 of the frame 4.
Screw into.

However, when installing a large rectangular wiring device, the notch hole 3 on the surface is larger than that of a conventional wiring device, so there is no room between the screw insertion holes 21 of the frame 4 to provide a screw hole to support the flush plate. Therefore, the screw hole 2 is provided closer to the end than the screw insertion hole 27.

In other words, since the mounting is to be done on surface 2 with large dimensional intervals, if the screws 5 are tightened too much when mounting the frame 4, the end of the mounting frame 4 will come into pressure contact with the notch hole 3. As shown in the first figure, both ends of the mounting frame 4 are bent in an arched manner away from the mounting surface.

During installation, the axis of the screw hole 9 of the frame 4 is inclined as shown in FIG.

In some cases, as previously seen in Japanese Utility Model Publication No. 50-13261, a thin wall portion 28 is provided on the inner circumferential surface of the screw insertion hole of the flash plate, and the thin wall portion 28 is arranged opposite to the imaginary straight line connecting the screw insertion holes 7. By providing two slits 29.29.

It is known that the screw 8 is temporarily fixed by the thin portion 28 to prevent it from falling off.

However, as described above, when the frame 4 is installed at both ends as shown in FIG.
Because it is difficult to incline within the vertical plane that includes the above virtual straight line,
There is a drawback that it is difficult to install the screw 8 into the screw hole 9 of the frame 4.

To explain this in more detail, when a thin wall portion 28 having a slit 29 as shown in the first figure is provided in the screw insertion hole, the tip of the screw 8 partially falls into the slit 29, so that the screw 8 is inserted into the slit 29. It was found that it tends to lean in the direction of

Therefore, 29.
29, the screw 8 is likely to tilt in either the left or right direction with respect to the imaginary straight line, but it is difficult to tilt in the direction of the imaginary straight line.

This invention was made taking the above circumstances into consideration.

By regulating the number and location of slits provided in the screw insertion holes of the flash plate along with the thin-walled parts, this flash plate not only prevents the screws from falling off, but also makes it easy to install the flash plate against deformation of the frame. Plate mounting is intended to provide equipment.

The present invention uses a pair of screw sweeping holes formed in a flash plate made of synthetic resin to form a continuous thin-walled part having a penetration part and one slit formed on the periphery of the penetration part and communicating with the penetration part. , and the slit is disposed close to the screw insertion hole of the mounting frame.

As a result, the screws are easily inclined toward the slit side in the screw insertion holes of the flash plate, so the screws can be easily inserted into the screw holes of the frame through the flash plate, and therefore the screws can be easily inserted into the screw holes of the frame. This makes it easy to attach the plate.

The details of the present invention will be explained below with reference to an embodiment shown in the third to sixth figures.

11 is a flash plate, and this flash plate 11 is molded from synthetic resin.

12 is a wiring device insertion window, and 13.13 is a screw insertion hole for mounting.

The screw insertion holes 13, 13 are formed at both ends of the flash plate 11 so as to be spaced apart from each other.

The screw insertion holes 13, 13 will be explained in more detail.
The inner peripheral surface of the screw insertion hole 13 is formed to include a thin walled portion 16 having one slit 15, and the slit 15 is disposed close to the screw insertion hole 21 of the frame 4, which will be described later.

It is desirable that the thin portion 16 be formed to have a diameter slightly smaller than the outer diameter of the threaded portion of the screw 18 inserted into the mounting hole 13.

19 is mounted on a frame, and this mounting frame 19 is not shown in detail,
It is formed into a plate shape and has a screw insertion hole 21 for mounting on a surface 20 and a screw hole 22 for mounting a flush plate disposed on the end side of this screw insertion hole 21. .

Reference numeral 23 indicates a frame mounting portion provided on the mounting surface 20, and 24 indicates a cutout hole in which the wiring device 25 provided on the mounting surface 20Vr is disposed.

The mounting frame 19 is bridged through a cutout hole formed in the mounting surface 20 with both ends of the frame 19 superimposed on the mounting surface 20.

The wiring device 25 can be attached to the frame 19.

Reference numeral 26 denotes a screw for attaching the mounting frame 19 to the mounting frame mounting section 23.

Next, the effect will be explained.

When installing the wiring device 25, the frame 19 is installed on the surface 20, and the screw insertion hole 21 is installed on the frame 23.
The screw 26 may be inserted into the screw insertion hole 21 and screwed in.

In this case, as mentioned above, the notch hole 24 on the mounting surface 20 is designed to accommodate the large square wiring device 25, so the opening is large. Using the edge of the opening as a fulcrum, the mounting screw 26 side sinks inward from the surface 20, and the end side is forced to deform so that the mounting surface 20 is also separated, resulting in an arched installation. When mounting, the axes of the screw holes 22 at both ends of the frame 19 are inclined inward.

However, the mounting is mounted on the surface 20 and the mounting is mounted on the frame 1.
In order to attach the flash plate 11 to the flash plate 9, the screw insertion hole 13 of the flash plate 11 is opposed to the screw hole 22 of the mounting frame 19, and the screw 18 is inserted and screwed.

In this case, since the axis of the screw hole 22 of the mounting frame 19 is located inclined inward, the axis does not coincide with the screw insertion hole 13 of the flash plate 11, but the axis line of the screw hole 22 of the flash plate 11 is A thin wall portion 16 having one slit 15 is formed, and the slit 15 is attached to the frame 4.
Because the screw 18 is inserted into the screw insertion hole 13 against the elasticity of the thin-walled portion 160, the tip of the screw 18 is pushed toward the slit 15 by the thin-walled portion 16. As a result, a part of it falls into the slit 15.

The screw 18 is inclined as shown in FIGS. 5 and 6, and has approximately the same axial position as the screw hole 22 of the inwardly sloped mounting frame 19, so that the screw 18 can be easily screwed into the screw hole 22, and thus The flush plate 11 can be easily attached.

On the other hand, even if the frame 19 is mounted without deforming to the mounting surface 20, if the screw 18 is screwed in with a screwdriver while applying a slight pressure force in the lateral direction so that it stands upright, the mounting frame 19 can be fixed. Therefore, even if the frame 19 is normally installed, the flash plate 11 can be easily installed.

As described in detail above, the present invention is capable of attaching the inner peripheral surface of the pair of screw insertion holes formed in the synthetic resin flash plate by using one slit in the side of the frame adjacent to the screw insertion holes. , and a continuous thin wall part is formed in the remaining part, so even if the frame is curved in an arch shape on the mounting surface and the axis of the screw hole is tilted, the flash plate will not work. The screw for attaching the screw is pressed toward the slit by the thin wall portion of the screw insertion hole, and the tip of the screw falls into the slit and is inclined, so that the screw is installed almost coaxially with the screw hole in the frame, making it easy to screw in.

Therefore, the flush plate can be easily attached, and the grooves of the screws are engaged with the thin-walled parts, thereby preventing undesired falling off.

Furthermore, since the flash plate only needs to be formed with a thin wall portion having one slit in the screw insertion hole, the structure is simple and the flash plate can be formed integrally during molding, so it can be provided at low cost.

Further, since the flash plate can be attached to the frame when it is properly attached, it is possible to use one part in common, which is economical.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional flash plate installation device. Figure 1 is an enlarged sectional view of the main parts, Figure 2 is a front view of the flash plate, and Figure 3 is a further enlarged view of the main parts. 4 to 6 show an embodiment of the present invention, FIG. 4 is a front view of the flash plate, FIG. 5 is a partially enlarged front view of FIG. 4, and FIG. 6 is the device. Enlarged sectional view of main parts,
FIG. 7 is a further enlarged sectional view of the main part. 11... flash play), 13, 13...
...Screw insertion, 15...Slit, 16.
...Thin wall part. 19...Mounting on frame, 20...Mounting on surface, 21...Screw insertion hole, 22...Screw hole, 24... Notched hole, 26...screw.

Claims (1)

[Claims for Utility Model Registration] Both ends are mounted on a surface and are bridged over a cutout hole formed in the surface, and the T is provided at a position opposite to both ends of the cutout hole. This type of installation has a screw insertion hole and a screw hole located outside the screw insertion hole of the frame and overlaps the mounting surface; Mounted with mounting screws that act to attach to a surface; Mounted with a flash plate made of synthetic resin that covers the frame and has screw insertion holes opposite the screw holes in the frame; Inserted into the screw insertion holes of this flash plate. It is installed by screwing into the screw hole in the frame. The flush plate is equipped with screws to attach it to the frame. One slit is formed on the inner circumferential surface of the screw insertion hole of the flash plate on the side close to the screw insertion hole of the frame, and a continuous thin wall portion is formed in the remaining portion. and the flush plate mounting device.