JPH0331109Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a case for electronic equipment used for high frequency equipment such as an RF unit for a VTR or an FM tuner, and in particular, a case that is installed on the top or bottom of an electronic equipment. The present invention relates to an electronic device case in which a connecting portion and a side plate are formed of a single metal plate.

[Prior art and its problems]

FIG. 6 is a perspective view of a frame constituting a conventional electronic device case, and FIG. 7 is a sectional view showing a state in which a cover is fitted to the frame.

The frame 1 shown in FIG. 6 is formed by punching and bending a single metal plate.
This frame body 1 consists of a pair of opposing side plates 1a, a pair of opposing side plates 1b, and a connecting portion 1c that joins the side plates 1a and 1b. An opening A is formed in the middle of the connecting portion 1c. A side plate 1a on one side of the frame 1 is provided with protrusions 2a and 2b that project inward. One protrusion 2a
are terminals for soldering electronic components, and the other protrusion 2b is a protrusion for positioning a printed circuit board.
The printed circuit board is inserted from the bottom of the frame 1 as shown in the figure,
It is positioned and fixed to the protrusion 2b. Further, a groove 3 is formed above the side plate 1a. As shown in FIG. 7, the opening A of the frame 1 is closed by a cover 4, and the protrusion 4b of the side plate 4a of the cover 4 is fitted into the groove 3 and positioned. .

FIG. 4 shows the process of bending and forming the frame 1 from a single metal plate. 6 is female and 7 is male. Both molds 6 and 7 are actually used in the orientation shown in FIG. A die punched from a metal plate is bent by both dies 6 and 7, and then pressed from the side by a pressing die 8 shown in FIG. 4 to form the frame 1 shown in FIG. 6. The protrusion 2a formed on the side plate 1a
and 2b are press-molded before the bending process shown in FIG. Therefore, on the side surface of the male mold 7, an escape groove 7a for escaping the protrusion 2a and an escape groove 7b for escaping the protrusion 2b are formed.

However, when the frame body 1 is bent in the process shown in FIG. 4, the upper ends of the relief grooves 7a and 7b of the male mold 7 cannot be sufficiently crimped with the female mold 6, so that after molding, as shown in FIG. , a sag α is formed in this part. As a result, not only does the completed shape of the frame 1 become distorted, but the groove 3, which should originally have a straight shape, becomes curved. Therefore, as shown in FIG. 7, when fitting the cover 4 to the frame 1,
The cover 4 will not fit sufficiently, and the protrusion 4b of the cover 4 will not be able to fully fit into the groove 3. If the fitting and contact between the frame body 1 and the cover 4 are not sufficient as described above, problems such as a decrease in the shielding characteristics of the case and worsening of unnecessary radiation will occur.

[Purpose of invention]

The present invention has been developed by focusing on the above-mentioned conventional problems, and uses the same forming method as the conventional method to eliminate the sagging part at the bent part between the side plate and the connecting part, and has a simple structure. The purpose is to provide a case for electronic equipment that can be formed using

[Structure of the idea]

In the present invention, the connecting portion located on the top or bottom surface of the electronic device and the side plate that covers the side surface of the electronic device are formed continuously, and the boundary between the connecting portion and the side plate is bent at a right angle. In the case for an electronic device, the side plate is formed with a protrusion that protrudes inward, and a notch located on the same line as the protrusion is formed in a bent portion between the connection portion and the side plate. It is characterized by the fact that Even if an escape groove is formed on the side plate abutting surface after molding to allow the protrusion of the side plate to escape, the notch should be aligned with the end of the relief groove at the bent portion. It is designed so that no sagging part is formed at the bent part.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings of FIGS. 1 to 5.

Fig. 1 is a perspective view of a frame constituting a case for electronic equipment according to the present invention, Fig. 2 is a sectional view showing a state in which a cover is attached to the frame, and Fig. 3 is a product using the case according to the present invention. FIGS. 4 and 5 are explanatory diagrams showing the process of forming the frame body.

The frame shown in FIG. 1 is basically the same as the conventional one shown in FIG. That is, the frame plate 1 has side plates 1a, 1a and side plates 1b, 1b, and both side plates 1a and 1b are continuous through a connecting portion 1c. An opening A is located in the middle of the connecting portion 1c. Side plate 1a
Protrusions 2a and 2b are formed in the. The protrusion 2a is an electronic component connection terminal, and the protrusion 2b is a protrusion for positioning a printed circuit board. Further, a groove 3 for fitting the cover 4 is formed above the protrusion 2a. A notch B is formed at the boundary between the side plate 1a and the connecting portion 1c. This notch B
are located directly above each protrusion 2a and 2b.
That is, each protrusion 2a, 2b and each notch B are arranged on the same line extending in the vertical direction in FIG.

Next, the process of forming the frame will be explained with reference to FIGS. 4 and 5.

6 shown in FIG. 4 is a female type, and 7 is a male type. Both molds 6 and 7 are actually used in the orientation shown in FIG. A plate material punched from a metal plate is bent by both molds 6 and 7, and then pressed from the side by a pressing mold 8 shown in FIG. 5 to form the frame 1. The protrusions 2a and 2b formed on the side plate 1a are press-molded before the bending process shown in FIG. 4. Therefore, at the position where the side plate 1a of the male die 7 comes into contact, an escape groove 7a that escapes the protrusion 2a and an escape groove 7b that escapes the protrusion 2b are formed. Further, the notch B located between the side plate 1a and the connecting portion 1c is arranged to coincide with the upper end of each relief groove 7a and 7b of the male mold 7. When the boundary between the side plate 1a and the connecting part 1c is bent by each mold, a notch B exists in the relief grooves 7a and 7b, so a sagging part as shown by α in FIG. 6 is formed. The bent portions other than the notch B are bent completely at right angles.

Therefore, the groove 3 is not distorted, and when the cover 4 is fitted as shown in FIG.
is securely fitted into the groove 3, and the frame 1 and cover 4 can be reliably assembled.

FIG. 3 shows an integrated RF modulator as an example of an electronic device using a case according to the present invention. This modulator has a printed circuit board 11 attached to it from the lower opening of the frame 1, and is positioned by protrusions 2b formed on side plates 1a and 1b. Inside the frame 1 is a shield plate 1d
The modulator part MD is on one side.
The other side is now the input selection section AM. In addition, an input/output plug 12 is fixed to the side plate 1b. In the bent portion between the side plates 1a, 1b and the connecting portion 1c, a notch B located directly above the protruding portion 2b is provided. Due to the presence of the notch B, no droop is formed in the bent portion, and no distortion occurs in the fitting groove 3 for fitting the cover.

Note that the electronic device case according to the present invention is not limited to an integrated RF modulator, and can be used for various other devices such as an FM tuner.

[Effect of idea]

As described above, according to the present invention, the following effects can be achieved.

(1) At the bending part between the side plate and the connection part,
Since the notch is provided on the same line as the protrusion of the side plate, even if the mold is provided with an escape groove, the existence of this escape groove will prevent the bending portion from sagging. Therefore, the shape of the frame body can be folded correctly and unified, so that the product value can be increased.

(2) Since no distortion occurs in the groove in which the cover is fitted, the bonding between the cover and the frame is good, and the shielding characteristics are improved.

(3) Since the structure of the frame only needs to be provided with a notch in the bent portion, it is not complicated and does not increase costs.

(4) Since a mold with relief grooves for the protrusion can be used as in the past, the same bending work as in the past can be done and there is no need to make a special mold.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the frame of the electronic device case according to the present invention, Fig. 2 is a cross-sectional view showing a state in which the cover is fitted to the frame, and Fig. 3 is a perspective view showing the case of the present invention. Integrated type as a specific example of electronic equipment used
A perspective view showing an RF modulator, FIGS. 4 and 5 are explanatory views showing the process of bending and forming a frame, and FIG. 6 is a perspective view showing a frame of a conventional electronic device case.
FIG. 7 is a sectional view showing a state in which a conventional frame body and a cover are fitted. DESCRIPTION OF SYMBOLS 1...Frame body, 1a, 1b...Side plate, 1c...Connection part, 2a, 2b...Protrusion part, 3...Cover fitting groove, 4...Cover, B...Notch.

Claims (1)

[Scope of utility model registration request] A connecting portion located on the top or bottom surface of the electronic device and a side plate covering the side surface of the electronic device are formed continuously, and a boundary portion between the connecting portion and the side plate is bent at a right angle, and In an electronic device case in which a side plate is formed with a protrusion that protrudes inward, a notch located on the same line as the protrusion is formed in a bent portion between the connection portion and the side plate. A case for electronic devices characterized by: