JPH0328128B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative plate, and more particularly to a decorative plate that is fitted into a plate frame attached to a wall surface and covers the front surface of the plate frame.

Conventionally, this type of decorative plate has used aluminum or stainless steel metal plates, but due to processing problems when using a metal plate for the decorative plate, it has to be attached to the wall using screws 21 as shown in Figure 1. It is common practice to do this, and the screws 21 are exposed on the surface, which is unfavorable in terms of appearance. In addition, the wall surface often contains alkaline materials such as calcium carbonate, and when the wall surface contains moisture, decorative plates such as aluminum
However, the powder of the material that makes up the wall may adhere to the back side of decorative plate A in a moist state, so the anti-corrosion treatment was applied to the surface that was in contact with the wall surface. It was a time-consuming process. Furthermore, in the case of stainless steel, since the material itself is hard, burrs tend to form at the edges during processing, making it dangerous to use.

The present invention was made to eliminate the above-mentioned drawbacks of the conventional example at once, and its main purpose is to provide a decorative plate whose surface is covered with metal and which can be attached without screws. Another objective is to eliminate the need for anti-corrosion treatment on the back side of the metal plate by covering the back side of the metal plate with synthetic resin. To provide a safe decorative plate by covering the ends of the plate with a synthetic resin to prevent burrs of a metal plate from forming on the ends of the decorative plate.

Embodiments of the present invention will be described below with reference to the accompanying drawings. The decorative plate according to the present invention is fitted into a plate frame 2 attached to a wall surface.
This is a plate that covers the front surface, and consists of a substrate 3 formed by extrusion molding of thermoplastic resin, and a thin metal plate 4 that is laminated on the front surface of the substrate 3 when the substrate 3 is molded. 3 Front opening grooves 5 formed on both side edges over the entire length of the side edges.
A hook portion 7 at the tip of a locking protrusion 6 protruding from the back surface of the substrate 3 is locked to the periphery of the opening 1 of the plate frame 2 and connected to the plate frame 2, and is provided at both ends of the plate frame 2. It is characterized by being fitted between the protrusions 20. This embodiment exemplifies a decorative plate for attaching electrical appliances such as switches and outlets to a wall surface.
As shown in FIG. 2, a thin metal plate 4 made of aluminum, stainless steel, etc. is laminated on a substrate 3 made of thermoplastic synthetic resin. This laminate is formed using an extrusion molding machine and a crosshead die. That is, as shown in FIG. 3, a roll forming machine 9 and a drawing machine 10, which are disposed in front of a crosshead die 8, are used to form a thin metal sheet 4 which has both ends bent in advance. A liquid thermoplastic synthetic resin 11 that will become the substrate 3 is laminated within the crosshead die 8, and the substrate 3 is cooled and hardened through the die plate 12, forming a long body 13 in the shape shown in FIG. This elongated body 13 is then cut to a required length, the locking protrusion 6 on the back side is shaped, and an opening 14 is bored to expose a switch or an outlet. Decorative plate A formed in this way
At both ends of the thin metal plate 4 in the width direction, the ends of the thin metal plate 4 are accommodated in grooves 5 that are open at the front and are formed over the entire length of the edge of the substrate 3 in the longitudinal direction. Further, as shown in FIG. 5, a locking projection 6 projects from the back surface of the substrate 3, and a hook portion 7 that projects outward is formed at the tip of the locking projection 6. Furthermore, a groove 15 parallel to the side edge of the substrate 3 is formed at the center in the width direction on the back surface of the substrate 3, and the heads of screws (not shown) for attaching the plate frame 2 to the wall surface are decorative. The decorative plate A is prevented from floating up from the wall surface by hitting the plate A. On the other hand, the plate frame 2 is a frame body with an opening at the center as shown in FIG. The hook portions 7 are adapted to be locked respectively. plate frame 2
Screw holes 16 as shown in FIG. 7 are formed at the upper and lower ends of the screw hole 16, and projecting pieces 17 protrude from three sides of the inner periphery of the screw hole 16. By the way, the screw hole 16 is bored in the pedestal part 18 provided above and below the plate frame 2, and this pedestal part 18
are supported by left and right bridge portions 19 provided between the opening 1 of the plate frame 2 and long holes 22 formed along the left and right directions at both upper and lower ends of the plate frame 2, respectively. The bridge portion 19 has a wave shape that waves in the front-rear direction, and when the bridge portion 19 has elasticity in the front-rear direction and the plate frame 2 is attached to a wall surface with screws, the elasticity of the bridge portion 19 causes the plate frame to The periphery of No. 2 is in close contact with the wall surface. In addition, protrusions 20 are formed at both the upper and lower ends of the plate frame 2 to protrude forward over the entire length of the upper edge and the lower edge, so that when the decorative plate A is attached to the plate frame 2, the decorative plate A is held between both protrusions 20 to prevent the decorative plate A from shifting in the vertical direction and to prevent both upper and lower edges of the decorative plate A from being exposed.

As described above, in the present invention, the substrate is formed by extrusion molding, and the metal thin plates are laminated during this molding, so that both edges of the metal thin plates can be embedded in the substrate during molding. , and of course there is no need to apply anti-corrosion treatment to the back side of the thin metal plate, there is no need to apply anti-corrosion treatment to both edges of the thin metal plate, and furthermore, both ends of the thin metal plate are exposed to both end faces of the board. Since both ends are protected by the protrusions of the plate frame, anti-corrosion treatment is not required.Also, since both edges and edges of the thin metal plate are not exposed, burrs on the edge of the thin metal plate are prevented. It does not compromise safety. In addition, since the hook at the tip of the locking protrusion protruding from the back of the board is locked to the periphery of the opening in the plate frame and connected to the plate frame, there are no screws required even though the surface is made of metal. It has the advantage of being able to be mounted on a wall.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 a, b,
c and d are respectively a front view showing one embodiment of the present invention, a sectional view of the stairs taken along line A-A in the same figure a, a rear view, and a bottom view;
FIG. 3 is a schematic diagram showing the same manufacturing device as above, FIG. 4 is a perspective view of a long body manufactured by the same manufacturing device as above,
Figure 5 is a partial sectional view of the same as above, Figure 6 a, b, c,
d is a front view of the plate frame used in the above, a cross-sectional view of the stairs taken along line B-B in figure a, a back view and a cross-sectional view taken along line C-C in figure a, and figures 7a and b are respectively a cross-sectional view of the plate frame taken along line B-B in figure a. 1 is a partial sectional view and a partial front view, 1 is an opening, 2 is a plate frame, 3 is a substrate, 4 is a thin metal plate,
5 is a groove, 6 is a locking projection, 7 is a hook, and A is a decorative plate.

Claims (1)

[Claims] 1 A plate that is fitted into a plate frame attached to a wall surface and covers the front surface of the plate frame, and includes a substrate formed by extrusion molding of thermoplastic resin, and a thin metal plate laminated on the front surface of the substrate during molding of this substrate. Both edges of the thin metal plate are embedded in front opening grooves formed on both sides of the board over the entire length of each side edge, and the hook at the tip of the locking projection protruding from the back side of the board is connected to the plate frame. What is claimed is: 1. A decorative plate that is connected to a plate frame by being locked to the periphery of an opening of the plate, and is fitted between protrusions provided at both ends of the plate frame.