KR100371737B1 - A manufacturing method for electronic parts protecting case and a case manufactured thereby - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electronic component protective case and a case manufactured by the method, which enclose an electronic component to protect it from external contact or impact, and to easily fix the electronic component to an electronic product to be used.

In the method for manufacturing an electronic component protective case of the present invention, at least two side plates (22, 23, 24, 25) adjacent to the top, bottom, left and right directions are formed around the bottom plate (21). Forming fittings 26 and 27 and fitting grooves 28 and 29 for mutual coupling at opposite positions of adjacent side plates are formed, and first and second gap preventing projections are formed on the fitting pieces and fitting grooves. The first step of forming the expanded case 20 having the (26a, 27a, 28a, 29a) formed by press-cutting a metal plate, press bending the developed case, and bending the side plate at right angles to the bottom plate. While joining the adjacent fitting piece and the fitting groove, the first gap preventing projection of the fitting piece is bent to an adjacent mating side plate, and the second gap preventing projection of the fitting groove is the fitting piece of the mating side plate. Cube shape with at least one side open It comprises a second step of molding the device 20.

In the electronic component protection case of the present invention, the fitting pieces 26 and 27 and the fitting grooves 28 and 29 between the adjacent side plates 22, 23, 24 and 25 are manufactured by the manufacturing method as described above. At the same time, the first gap preventing projections 26a and 27a of the fitting pieces 26 and 27 are held by the mating side plates 24 and 25, and the second gap prevention of the fitting grooves 28 and 29 is prevented. The projections 28a and 29a are configured to be held by the fitting pieces 26 and 27 of the mating side plates 22 and 23.

Description

Manufacturing method of electronic component protection case and case manufactured by the same method {A MANUFACTURING METHOD FOR ELECTRONIC PARTS PROTECTING CASE AND A CASE MANUFACTURED THEREBY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electronic component protection case and a case manufactured by the method, which enclose an electronic component to protect it from external contact or impact, and to easily fix the electronic component to an electronic product to be used.

In general, an electronic component, for example, an electronic component such as a function switch is composed of a body made of plastic injection molding, and an electrical device installed inside and outside the body to perform a function of the component.

Since the body of the electronic component is made of plastic, the structural strength is weak, and the electrical apparatus plays a decisive role in the performance of the function. Therefore, it is necessary to protect the electronic component from damage from external contact or impact. It is necessary to fix it firmly to this used electronic product.

Therefore, in order to protect the electronic parts from external contact or impact, and to install them firmly on the electronic products, a case is used to wrap and receive the electronic parts, which press presses and cuts a metal plate with high structural strength. It is manufactured by bending molding.

In general, the case is manufactured in a hexahedral shape in which at least one surface for inserting an electronic component is opened, and has a plurality of fixing pieces for firmly fixing the electronic product.

1 to 3 illustrate such a conventional case manufacturing method and a case manufactured by the manufacturing method thereof. For example, the case is formed in a hexahedral shape and shows a case in which one surface is open, but according to the function of an electronic component. The two sides may be open, and in this case, the manufacturing method is the same.

1 is an exploded view of a hexahedral case with one side open, with a front plate 2 and a rear plate 3 disposed above and below a bottom plate 1, and a left side plate 4 and a left and right side. The right side plate 5 is arrange | positioned. In addition, fixed projection pieces 2a, 3a, 4a, and 5a are formed at the upper ends of the front plate 2, the back plate 3, the left side plate 4 and the right side plate 5, and the front plate 2 and The left and right ends of the back plate 3 are provided with fitting pieces 6 and 7 which protrude as long as the thickness of the metal plate, and the left and right ends of the left side plate 4 and the right side plate 5. Fitting grooves 8 and 9 corresponding to the fitting pieces 6 and 7 are formed.

Such a deployment case 10 can be produced by press cutting a metal plate, and can form a hexahedral case 10 having one surface open by press bending a dotted line portion shown in FIG. 1. At this time, an interference prevention groove 10a is formed in the corner portion where the plates of each face meet, and the interference prevention groove 10a interferes with each other when the bends of the hexahedral case 10 face each other and the edges are crushed. It will prevent you from losing.

2A to 2C illustrate a process of press bending the molded case 10 to be molded, and as shown in FIG. 2A, the deployed case 10 is placed on the lower stationary mold 11 and dotted lines. When the bottom plate 1 is pressed by lowering the upper movable mold 12 having the cross-sectional area corresponding to the portion, the bottom plate 1 is inserted into the forming hole 11a and fixed as shown in FIG. 2B. The front plate (2), the back plate (3), the left side plate (4) and the right side plate (5) are bent around the dotted line by the corner portion where the upper surface of the mold 11 and the forming hole 11a fit. When the movable mold 12 is further lowered, as shown in FIG. 2C, the front plate 2, the back plate 3, the left side plate 4, and the right side plate 5 are relative to the bottom plate 1. It will be bent at a right angle.

3 is a perspective view showing a case 10 formed by press bending as described above, wherein the front plate 2, the back plate 3, the left side plate 4 and the right side plate 5 are the bottom plate 1. The fitting pieces 6 and 7 formed at both ends of the front plate 2 and the split plate 3 are bent at right angles with respect to the left side plate 4 and the right side plate 5. It fits into the groove | channels 8 and 9, and forms the hexahedral-shaped case 10 with one side open.

However, in the conventional case 10 manufactured as described above, the fitting pieces 6, in which the combination of the front plate 2, the back plate 3, the left side plate 4 and the right side plate 5 is formed thereon, 7) and the fitting grooves (8, 9), so that it is not deformed in the inward direction, but when the external force acts in the direction of the arrow of Figure 3, it is easily deformable in the outward direction to open.

Therefore, there is a problem in that defective products increase due to the opening of each side plate during case manufacture, and in the case where opening occurs in a state in which an electronic component is accommodated therein, there is a problem that the electronic component cannot be reliably protected.

The present invention has been made in view of the above problems, and an object thereof is to prevent the occurrence of each side plate forming a case, thereby reducing the occurrence of defective products during manufacturing, and manufacturing an electronic component protection case that can reliably protect the electronic components contained therein. The present invention provides a method and a case manufactured by the method.

Another object of the present invention is to provide a means for preventing the opening of each side plate as described above is formed at the same time as the step of bending and molding each side plate by the electronic component protective case manufacturing method that does not require a separate additional step and It is to provide a case manufactured by the manufacturing method.

1 is a development view for manufacturing a conventional electronic component protection case.

2a to 2c is a process chart showing a manufacturing method of a conventional electronic component protection case.

3 is a perspective view of a case manufactured by a conventional manufacturing method.

4 is an exploded view for the manufacture of the electronic component protection case of the present invention.

5A to 5G are process drawings showing the manufacturing method of the electronic component protection case of the present invention.

Figure 6 is a perspective view of the case produced by the manufacturing method of the present invention.

<Explanation of symbols for the main parts of the drawings>

20: case 21: bottom plate

22: front plate 23: back plate

24: left side plate 25: right side plate

26,27: Fitting piece 28,29: Fitting groove

26a, 27a: first gap prevention projections 28a, 29a: second gap prevention projections

In order to achieve the above object, the present invention forms at least two or more side plates adjacent to the top, bottom, left, and right directions about a bottom plate, and is fitted for mutual coupling at opposite positions of the adjacent side plates. A first step of forming a case having a fitting piece and a fitting groove, and forming a case having a first and a second gap preventing projection formed in the fitting piece and the fitting groove by press-cutting a metal plate; Press-bending the case to bend the side plate at right angles to the bottom plate, to engage the adjacent fitting piece and the fitting groove, and at the same time, the first gap preventing projection of the fitting piece is bent to the adjacent mating side plate, The second gap preventing projection of the groove is formed by a second step of forming a cube-shaped case having at least one surface open by bending the fitting piece of the opposite side plate. To provide a method of manufacturing electronic components with a protective case for ranging.

In addition, the present invention is manufactured by the manufacturing method as described above, while the fitting piece and the fitting groove are coupled between the adjacent side plates, the first gap preventing projection of the fitting piece is held on the opposite side plate, the fitting groove The second gap preventing projection is to provide an electronic component protection case characterized in that the configuration is held on the fitting piece of the mating side plate.

Hereinafter, FIGS. 4 to 6 illustrate a method for manufacturing an electronic component protection case and a case manufactured by the method according to the present invention. As one embodiment, a case having a hexahedron shape and an open surface on one side is shown.

FIG. 4 is an exploded view of a hexahedral case 20 having one side open, and the front plate 22 and the rear plate 23 are disposed at the top and bottom of the bottom plate 21, and the left side plate (left and right) 24) and the right side plate 25 are arrange | positioned. In addition, fixed projection pieces 22a, 23a, 24a, and 25a are formed at each upper end of the front plate 22, the back plate 23, the left side plate 24, and the right side plate 25, and the front plate 22 and At the left and right ends of the rear plate 23, fitting pieces 26 and 27 are formed to protrude by the length corresponding to the thickness of the metal plate, and the left and right ends of the left and right side plates 24 and 25 Fitting grooves 28 and 29 corresponding to the fitting pieces 26 and 27 are formed.

In addition, the upper edge portions of the fitting pieces 26 and 27 formed on the front plate 22 and the rear plate 23 are formed with first gap preventing projections 26a and 27a protruding toward the left and right sides. At the lower edges of the fitting grooves 28 and 29 formed in the left and right side plates 24 and 25, second gap preventing projections 28a and 29a protruding toward the left and right sides are formed.

This expanded case 20 can be produced by press cutting a metal plate, and can form a hexahedral case 10 with one surface open by press bending a dotted line portion shown in FIG. 4. At this time, an interference prevention groove 20a is formed in the corner portion where the plates of each surface fit, and the interference prevention groove 20a is the corner portion by interfering with the plates of adjacent surfaces during the bending molding of the hexahedral case 20. This prevents crushing.

5A to 5G illustrate a process of press bending the molded case 20 to form the molded case 20. As shown in FIG. 5A, the deployed case 20 is placed on the lower fixed mold 31, and a dotted line is shown. When the bottom plate 21 is pressed by lowering the upper movable mold 32 having the cross-sectional area corresponding to the portion, the bottom plate 21 is inserted into the forming hole 31a as shown in FIG. The front plate 22, the back plate 23, the left side plate 24 and the right side plate 25 are bent around the dotted line by the corner portion where the upper surface of the stationary mold 31 and the forming hole 31a fit. do.

FIG. 5C is a cross-sectional view taken along the line AA of FIG. 5B. When the movable mold 32 is further lowered in this state, as shown in FIG. 5D, the front plate 22, the back plate 23, and the left side plate 24 are shown. And the right side plate 25 is bent at a right angle with respect to the bottom plate 21, and the fitting pieces 26 and 27 of the front plate 22 and the back plate 23 are left and right side plates 24, The second gap preventing projections 28a and 29a formed in the fitting grooves 28 and 29 of the left and right side plates 24 and 25 are simultaneously coupled to the fitting grooves 28 and 29 of the molding hole 25. More protruding outwards than 31a).

When the movable mold 32 is further lowered in this state, as shown in FIG. 5E, the second gap preventing projections 28a and 29a of the fitting grooves 28 and 29 are inserted into the molding holes 31a and at the same time. The bent portion (31) is bent to the surface of the fitting piece (26, 27) by the corner portion where the upper surface of the stationary mold (31) meets the forming hole (31a) to fit the fitting piece (26, 27). To the side.

5B is a cross-sectional view taken along the line BB of FIG. 5E, in which the front plate 22, the rear plate 23, the left side plate 24, and the right side plate 25 are bent at right angles to the bottom plate 21. 22 and the first flap prevention projections 26a and 27a formed on the fitting pieces 26 and 27 of the back plate 23 also protrude outwardly from both sides of the forming hole 31a. In this state, When the movable mold 32 is further lowered, as shown in Fig. 5G, the first gap preventing projections 26a, 27a of the fitting pieces 26, 27 are inserted into the forming holes 31a, and the adjacent left side is inserted. The right side plates 24 and 25 are bent to press the left and right side plates 24 and 25 toward the front plate 22 and the rear plate 23.

6 is a perspective view showing a case molded by the press bending as described above, wherein the front plate 22, the back plate 23, the left side plate 24 and the right side plate 25 are perpendicular to the bottom plate 21. FIG. The fitting grooves 26 and 27 formed at both ends of the front plate 22 and the double plate 23 by being bent by the fitting grooves 28 formed at both ends of the left side plate 24 and the right side plate 25 are formed. 29, and the second flaring preventing projections 28a, 29a of the fitting grooves 28, 29 press the surfaces of the fitting pieces 26, 27 to fit the fitting pieces 26, 27. This prevents the fitting grooves 28 and 29 from being separated. This prevents the front plate 22 and the back plate 23 from spreading from the left and right side plates 24 and 25.

In addition, the first gap prevention projections 26a and 27a formed on the fitting pieces 26 and 27 of the front plate 22 and the rear plate 23 press the surfaces of the left and right side plates 24 and 25, The right side plates 24 and 25 are prevented from spreading from the front plate 22 and the back plate 23.

So far, as an embodiment, the manufacturing of a hexahedral case with an open top has been described, but the present invention is not limited thereto, and two surfaces such as a top and a left side, a top and a right side, or a top and a front side, a top and a back side are open. It is also possible to manufacture and configure a cube-shaped case.

According to the present invention as described above, by preventing the opening of each side plate by the fixing structure of the gap preventing projections, the occurrence of defective products during manufacturing is reduced, there is an effect that the electronic components accommodated therein can be reliably protected.

In addition, as described above, the fixing structure of the anti-opening protrusion preventing the opening of each side plate is formed at the same time as the process of bending and molding each side plate, thereby making it possible to manufacture without an additional process.

Claims (2)

Forming at least two side plates adjacent to the top, bottom, left and right directions about the bottom plate, and forming fitting pieces and fitting grooves for mutual coupling at opposite positions of the adjacent side plates; A first step of forming the expanded shape case in which the first and second gap preventing projections are formed in the fitting piece and the fitting groove by press-cutting a metal plate; Press-bending the expanded shape case to bend the side plate at right angles to the bottom plate, to engage the adjacent fitting piece and the fitting groove, and at the same time, the first gap preventing projection of the fitting piece is locked to the adjacent counterpart side plate. Bend over the outer side of the side plate as closely as possible, and the second opening preventing projection of the fitting groove bends over the outer side of the fitting side so as to be locked to the fitting side of the mating side plate, and at least one side is opened. Method for manufacturing an electronic component protection case, characterized in that the second step of forming the case. At least two side plates formed adjacent to the bottom plate in the up, down, left and right directions, and fitting pieces and fitting grooves formed for mutual coupling at opposite positions of the adjacent side plates are provided. In the electronic component protection case of the metal sheet material, Forming the first and the second gap prevention projections in the fitting piece and the fitting groove, and by pressing the side plate at a right angle to the bottom plate by joining the adjacent fitting pieces and the fitting groove at the same time, The first gap preventing projection is press-bended to be tightly pressed on the outer surface of the adjacent mating side plate and locked to the outer surface of the side plate, and the second gap preventing projection of the fitting groove is placed on the outer surface of the fitting piece of the mating side plate. The electronic component protection case, characterized in that the press bent to close contact is secured to the outer surface of the fitting piece.