JPH0437093A - Case for electrical apparatus - Google Patents

Abstract

PURPOSE:To cut down the production cost of a case while the generation ratio of defectives is reduced by a method wherein at least one among wall parts, which are disposed in upright on the outer periphery of a flat plate made of a metal, is formed by a synthetic resin outsert molding. CONSTITUTION:First and second wall parts 2 and 3, which are respectively formed on two sides opposing to each other of a flat plate 1, are formed integrally with the plate 1 by a bending work means and at the same time, third and fourth wall parts 4 and 5, which are respectively formed on other two sides in an opposed state, are formed by a synthetic resin outsert molding. In such a way, a case, which is superior in strength, can be simply manufactured, the generation ratio of defectives is also reduced, the production cost of the case is also cut down and at the time of formation of the wall parts 4 and 5 using the outsert molding, the shape and color of these wall parts 4 and 5 can be freely set.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a case for electrical equipment in which audio equipment or the like is housed.

(Prior Art) Generally, a case for an electrical device is composed of a metal flat plate and a wall portion erected around the outer periphery of the flat plate. Conventionally, such a case is made by drawing a thin plate of metal such as aluminum to form a wall around the outer periphery of the flat plate.

(Problems to be Solved by the Invention) As described above, when drawing means is used to manufacture cases for electrical equipment, drawing scratches are likely to occur, resulting in a high rate of defective products. However, there was also the problem of high production costs.

The present invention was made in view of the above-mentioned problems, and its purpose is to reduce the production cost while reducing the incidence of defects 8 by utilizing outsert molding means when forming the wall portion. The purpose of the present invention is to provide a case for electrical equipment that can be made at low cost.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a case for electrical equipment comprising a metal flat plate and a wall section erected around the outer circumference of the flat plate. It is characterized in that at least a portion of the wall portion is formed by outsert molding of synthetic resin.

Further, a part of the wall part may be formed integrally with the same material as the metal flat plate, and the other wall part may be formed by outsert molding of synthetic resin.

Furthermore, it is also possible to form the entire wall portion on the metal flat plate by outsert molding of synthetic resin.

(Function) By forming at least a part of the wall portion formed on the metal flat plate by outsert molding, the case for electrical equipment can be manufactured easily, and when conventional drawing processing means is employed. In comparison, the incidence of defective products is lower, the manufacturing cost is lower, and the wall portion formed by outsert molding can be shaped into any desired shape and colored in any desired color. , it can be made into a case with excellent design.

Further, when a part of the wall part is integrally formed with the same material as the metal flat plate and the other wall part is outsert molded with synthetic resin, a case for electrical equipment with excellent strength can be easily manufactured. The incidence of defective products is low, and the manufacturing cost is also low. Moreover, the wall part can be formed into any shape and colored in any color by outsert molding, and has an excellent design. This could be the case.

Furthermore, when the entire wall portion is formed on the flat metal plate by outsert molding of synthetic resin, the manufacturing of the case for electrical equipment becomes easier, the incidence of defective products is significantly reduced, and the manufacturing time is reduced. The cost is also low, and the design appearance of the case can be further enhanced by selecting the shape and color of the entire wall portion.

(Example) The case for electrical equipment shown in Fig. 1 consists of a rectangular flat plate (1) made of metal such as aluminum, and four walls standing upright on the four edges of the flat plate (1). 1st to 4th walls (
2) to (5) are formed into a box shape with the minus side open.

Therefore, in manufacturing the above electrical equipment case, at least a portion of the walls (2) to (5) are formed by outsert molding of synthetic resin. That is, the first
As is clear from the figure and FIG. 2, the first and second wall portions (2) (
3> are formed integrally with the flat plate (1) by bending means, and the third and fourth wall portions (4)<5) formed oppositely on the other two sides are made of synthetic resin. It is formed by outsert molding. In addition, the third
The fourth wall portions (4) and (5) integrally connect the flat plate (1) and the end surfaces of the first and second wall portions (2) and (3) as anchors. Furthermore, the third and fourth wall portions (4)
(5) includes the flat plate 1) and the first and second walls (2).
) (3) may be provided with a separate anchor part and firmly connected to this anchor part. The above-described outsert molding is performed by fitting the entire flat plate (1) into a mold of an injection molding machine and injecting a synthetic resin into the mold.

As described above, the first and second wall parts (2) and (3) are formed by bending means, and the other third and fourth wall parts (4) and (5) are formed by bending.
By forming it by outsert molding of synthetic resin,
A case with excellent strength can be manufactured easily, the incidence of defective products is low, and the manufacturing cost is also low.Moreover, the above-mentioned 3. Fourth wall (4)
When forming (5), the shape and color of these walls (4> (5)) can be freely set, resulting in a case with excellent design. It is very easy to process compared to other drawing methods, and
The incidence of defective products is also low. However, the present invention
As described above, the first metal plate <1) is bent by the bending means. Without forming the second wall portion (2)<3), the metal flat plate (1) is prepared in advance as the first wall portion (2). Using an extruded metal material integrally provided with reinforcing ribs corresponding to the second M parts (2) and (3), the third part is attached to the other part of the reinforcing ribs. It is also possible to form the fourth wall portions (4) and (5) by outsert molding.

Further, as shown in FIG. 3, in the electrical equipment case of the present invention, a rectangular one is prepared in advance as the flat plate (1), and the first to fourth wall portions are attached to the flat plate (1). (2) ~ (5
) may be formed entirely by outsert molding of synthetic resin.

As described above, when each of the walls (2) to (5) is entirely formed by outsert molding, the production of the case for electrical equipment becomes easier, and the incidence of defective products is significantly reduced. In addition, the production cost is low, and when outsert molding the entire walls (2) to (5), the shapes and colors of these walls (2) to (5) can be set to be self-contained. This further enhances the design appearance of the case.

(Effects of the Invention) As explained above, in the case for electrical equipment of the present invention,
At least a portion of the wall that stands around the outer circumference of the flat metal plate is formed by outsert molding of synthetic resin.
Compared to conventional methods, the rate of defective products can be lowered, the production cost can be lowered, and the wall part can be formed into any shape by outsert molding, and can be colored in any color. It can be made into something of excellent design.

Further, by forming part of the wall part integrally with the metal flat plate and forming the other wall part by outsert molding of synthetic resin, it is possible to easily manufacture a case for electrical equipment with excellent strength. In addition, the production cost can be reduced while reducing the incidence of defective products. Furthermore, the wall portion by outsert molding can be shaped into any desired shape or colored in any desired color, resulting in an attractive design. It can be made into a superior product.

Furthermore, by forming the entire wall portion on the metal flat plate by outsert molding of synthetic resin, it is possible to manufacture the case for electrical equipment even more easily, while significantly reducing the incidence of defective products. The cost can be reduced, and the design appearance can be further enhanced by selecting the shape and color of the entire wall portion.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall structure of an electrical equipment case according to the present invention, FIG. 2 is an enlarged perspective view with a partial cutaway of the same essential parts, and FIG. 3 is a perspective view showing another embodiment. ° (Explanation of symbols) (1)...Flat plate (2-5)...Wall part'Inner cup;

Claims (1)

[Scope of Claims] 1) A case for electrical equipment consisting of a metal flat plate and a wall part erected around the outer periphery of the flat plate, wherein at least a part of the wall part is made of synthetic resin outsert. A case for electrical equipment characterized by being formed by molding. 2) The electrical equipment case according to claim 1, wherein a part of the wall part is formed integrally with the metal flat plate from the same material, and the other wall part is formed by outsert molding of synthetic resin. 3) The electrical equipment case according to claim 1, wherein the entire wall portion is formed by outsert molding of synthetic resin on a metal flat plate.