JP2000196256A - Electronic equipment and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment which can be reduced in manufacturing cost and a method for manufacturing the equipment. SOLUTION: Electronic equipment is provided with a frame 2 which is formed of a sheet metal and holds a circuit board 8 and a terminal 10 for outside connection fixed to the board 8. The terminal 10 is constituted of a connecting section 10a which is formed by extending part of the side wall section 4 of the frame 2 and cutting off the extended part from the side wall section 4 and a terminal section 10b which is formed continuously from the connecting section 10a and the terminal section 10b is fixed to the circuit board 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus such as a transmitting / receiving unit for a portable telephone, a TV tuner or a modulator, and a method of manufacturing the same.
It relates to improvement of external connection terminals.

[0002]

2. Description of the Related Art FIGS. 9 and 10 are diagrams for explaining the prior art of this kind of electronic equipment.
1 is a frame 22 made of sheet metal such as a thin iron flat plate,
A circuit board 28 held by the frame 22 and terminals 30 fixed to the circuit board 28 are provided.

The frame 22 is formed in a box shape having open upper and lower surfaces. As shown in FIG. 9, the corner portion has a side wall portion 23 and a side wall portion 24 and a side wall portion 24 and a side wall portion 25 each having an upper end. The connecting parts 26 and 27 which are connected by the parts are formed.
Further, the lower end of the side wall 23 and the side wall 25 has a leg 2.
3a and 25a are provided integrally with each other.
At the lower end of 25a, mounting pieces 23b and 25b are respectively provided to protrude.

The circuit board 28 is provided with a flat insulating substrate 29 having a pair of holes 29a formed therein, and a conductive pattern (not shown) extending from an edge of the pair of holes 29a is formed on upper and lower surfaces thereof. In addition, electrical components (not shown) such as a resistor and a capacitor connected to the conductive pattern and forming an electrical circuit are mounted. And this circuit board 2
8 is attached to the inner walls of the side walls 23, 24 and 25 of the frame 22 by appropriate means such as caulking or soldering, as shown in FIG.

The terminal 30 includes a pair of terminal portions 30a made of a conductive wire and a rectangular insulating member 30b supporting the pair of terminal portions 30a. The pair of terminal portions 30a are attached to the insulating member 30b by insert molding. Have been. Then, as shown in FIG. 10, the terminals 30 are connected to the pair of terminal portions 30a by the pair of holes 29a of the circuit board 28.
Are mounted on the upper surface of the circuit board 28 and soldered to the pair of terminal portions 30 a on the lower surface side of the circuit board 28, thereby connecting the pair of terminal portions 30 a to the above-described circuit board 28 (not shown). The circuit board 28 is connected to the conductive pattern.
Attached to.

[0006] Then, the electronic apparatus 2 configured as described above.
1 is attached to a circuit board of an external device such as a mobile phone, a VTR deck or a TV by caulking the attachment pieces 23b and 25b of the frame 22, and the lower ends of the pair of terminal portions 30a are attached to the circuit board of the external device. Connected to perform a predetermined control process in cooperation with the circuit board of the external device.

[0007]

However, in the above-mentioned prior art of electronic equipment, since the terminals 30 are used, there is a problem that the number of parts increases and the cost of the electronic equipment cannot be reduced. I have. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic device and a method for manufacturing the electronic device that can reduce the cost of the electronic device.

[0008]

In order to achieve the above object, an electronic apparatus according to the present invention comprises a frame formed of sheet metal and holding a circuit board, and a terminal for external connection fixed to the circuit board. A part of a side wall portion of the frame is extended, and a connecting portion separated from the side wall portion and a terminal portion formed continuously with the connecting portion are provided, and the connecting portion and the terminal are provided. The main feature of the present invention is that the terminal is constituted by a portion and the terminal portion is fixed to the circuit board.

The side wall is provided with a continuous portion for connecting the upper end of the frame, a cutout is formed at a lower portion of the continuous portion, and the cutout is extended from an edge of the cutout to form the connection. Part and the terminal part.

The side wall is provided with a continuous portion connecting the lower end portion of the frame, a notch is formed at an upper portion of the continuous portion, and the notch is extended from an edge of the notch to form the connection. Part and the terminal part.

Further, the connecting portion is led out into the frame, the terminal portion is positioned in the frame, and the terminal portion is fixed to the circuit board in the frame.

According to another aspect of the present invention, there is provided a method of manufacturing an electronic device, comprising: a frame formed of sheet metal; and a circuit board held by the frame. Cutting and raising a portion, a connecting portion formed integrally with the side wall portion, a terminal consisting of a terminal portion formed continuously with the connecting portion is provided, and the circuit board is held on the frame, The most main feature is that the terminal portion is fixed to the circuit board, the connection portion is cut, the side wall portion and the terminal portion are separated, and a terminal for external connection is formed.

A part of the connecting portion is led out of the frame, and the terminal portion is positioned in the frame;
Fixing the terminal portion to the circuit board in the frame;
The connecting portion is cut outside the frame to separate the side wall portion and the terminal portion.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of an electronic apparatus according to the present invention will be described with reference to FIGS.

The electronic device 1 includes a frame 2 made of a sheet metal such as a thin iron flat plate, a circuit board 8 held by the frame 2, and terminals 10 fixed to the circuit board 8.

The frame 2 is formed in a box shape having upper and lower surfaces open, and as shown in FIG.
And connecting portions 6 and 7 for connecting the side wall portion 4 and the side wall portion 5 at the upper end thereof. Also, the side wall 3
At the lower end of the side wall 5, legs 3a, 5a are provided integrally, and at the lower ends of the legs 3a, 5a, mounting pieces 3b, 5b are protrudingly provided, respectively.

The side wall 4 is formed with a rectangular notch 4a having an open lower end. Above the notch 4a, a continuous portion connecting the upper end of the side wall 4 of the frame is formed. 4
b is provided.

The circuit board 8 is provided with a flat insulating substrate 9 having a hole 9a formed therein. On the upper and lower surfaces, a conductive pattern (not shown) extending from the edge of the hole 9a is formed. An unillustrated electric component such as a resistor or a capacitor constituting an electric circuit connected to the conductive pattern is mounted. Then, the circuit board 8 is formed by appropriate means such as caulking or soldering, as shown in FIG.
Are attached to the inner walls of the side walls 3, 4, and 5.

The terminal 10 is formed in an L-shape from the same metal plate as the side wall 4 of the frame 2 such as a thin iron flat plate. One end of the terminal 10 is located in the same plane with the other end of the frame 2.
And a terminal portion 10b formed continuously with the other end of the connecting portion 10a. As shown in FIG. 2, the terminal 10b of the terminal 10 is inserted into the hole 9a of the circuit board 8 in the frame 2 and soldered to the lower end of the terminal 10b on the lower surface of the circuit board 8. Is applied, the terminal portion 10b is connected to the above-described conductive pattern (not shown) of the circuit board 8 and is fixed to the circuit board 8.

Next, a method of manufacturing the electronic device 1 will be described. In the cutting process at the stage of processing the frame 2, the notch portion 4a as shown in FIG. Is formed to form a U-shaped extension 4c extending from the edge of the cutout 4a. Then, the frame 2 is formed into a shape as described above by performing a bending process, and the extending portion 4c is bent outward along the bending line 4d (from the front side to the back side in FIG. 3). By bending the tip of the extension 4c downward along the bending line 4e,
A part of the side wall 4 of the frame 2 is extended, and as shown in FIG.
A terminal 10 consisting of a terminal portion 10b formed continuously with the connecting portion 10a is provided. At this time, a part of the connecting portion 10a is located outside the frame 2 and is located inside the frame 2, and the terminal portion 10b is located inside the frame 2.

Next, the insulating substrate 9 constituting the circuit board 8
When an electric circuit (not shown) is mounted to form an electric circuit, a protruding piece 9b is integrally formed on one end edge thereof, and the width H1 of the protruding piece 9b is equal to the width H of the notch 4a.
It is formed substantially equal to 2. When the projecting piece 9b is guided by the notch 4a and the circuit board 8 is positioned in the frame 2 from below along the arrow A in FIG.
As shown in the figure, with the protruding piece 9b protruding outside the frame 2, the terminal portion 10b is inserted into the hole 9a in the frame 2 and protrudes from the lower surface of the circuit board 8, and the terminal 9b By soldering the portion 10b, the terminal portion 1
0b is connected to the conductive pattern (not shown) of the circuit board 8 and fixed to the circuit board 8, and in this state, the circuit board 8 is connected to the side walls 3 and 4 of the frame 2 by appropriate means such as caulking or soldering. , 5 on the inner wall.

Thereafter, the connecting portion 10a provided on the frame 2 is cut along the cut line 10c outside the frame 2 together with the protruding piece 9b of the circuit board 8 to cut the side wall portion 4 and the terminal portion 10a.
b and the connecting portion 10 separated from the side wall portion 4.
a, and a terminal portion 10b formed continuously with the connecting portion 10a
Are provided on the circuit board 8, and the manufacture of the electronic device 1 is completed.

The electronic device 1 constructed and manufactured as described above is attached to a circuit board of an external device such as a portable telephone, a VTR deck or a TV by caulking the attachment pieces 3b and 5b of the frame 2. The lower end of the terminal portion 10b of the terminal 10 is connected to the circuit board of the external device, and a predetermined control process is performed in cooperation with the circuit board of the external device.

Next, a second embodiment of the electronic apparatus of the present invention will be described with reference to FIGS.

As shown in FIG. 8, this electronic device 11
A frame 12 made of a sheet metal such as a thin iron flat plate; a circuit board 8 held by the frame 12;
And the terminal 20 fixed to the terminal 20.

In the second embodiment, in the cutting process at the stage of processing the frame 12 of the electronic device 11, the continuous portion 14b is left at the lower end of the side wall portion 14, and the upper end as shown in FIG. By providing the notch portion 14a in which the opening portion is opened, the extension portion 14 extending from the edge of the notch portion 14a is provided.
Form c. Then, the frame 12 is formed into a shape as shown in FIG. 6 by bending, and the extending portion 14c is bent outward along the bending line 14d (from the front side to the rear side in FIG. 7). Then, a part of the side wall portion 14 of the frame 12 is extended by bending the distal end portion of the extension portion 14c upward along the bending line 14e, and as shown in FIG. The connecting portion 20a formed integrally and the connecting portion 2
A terminal 20 consisting of a terminal portion 20b formed continuously with 0a is provided. At this time, a part of the connecting portion 20a is led out of the frame 12, and the terminal portion 20b is located inside the frame 12.

Then, the projecting piece 9b of the circuit board 8 is
4a to guide the circuit board 8 from above to the frame 12
When the terminal portion 20b is positioned inside the frame 12, the terminal portion 20b is inserted through the hole 9a into the hole 9a and protrudes from the upper surface of the circuit board 8 with the protruding piece 9b protruding outside the frame 12.
By soldering the terminal portion 20b on the upper surface side of
The terminal portion 20b is connected to the above-described conductive pattern (not shown) of the circuit board 8 and is fixed to the circuit board 8. In this state, the circuit board 8 is connected to the side wall portion 13 of the frame 12 by appropriate means such as caulking or soldering. , 14, and 15 on the inner wall.

Thereafter, the connecting portion 20a provided on the frame 12 is cut together with the protruding piece 9b of the circuit board 8 along the cut line 20c outside the frame 12 to separate the side wall portion 14 from the terminal portion 20b. The connecting portion 20a separated from the connecting portion 14 and the terminal portion 20b formed continuously with the connecting portion 20a are provided on the circuit board 8, and the manufacture of the electronic device 11 is completed.

The electronic device 11 constructed and manufactured in this manner is also caulked with the attachment pieces 13b and 15b formed on the side walls 13 and 15 of the frame 12, thereby providing an external device such as a portable telephone, a VTR deck or a TV. Attached to the circuit board of the device, the lower end of the terminal portion 20b of the terminal 20 is connected to the circuit board of the external device, and a predetermined control process is performed in cooperation with the circuit board of the external device.

[0030]

As described above, according to the electronic apparatus of the present invention, it is provided with a frame formed of sheet metal and holding a circuit board, and an external connection terminal fixed to the circuit board. A part of the side wall portion of the frame is extended, and a connecting portion separated from the side wall portion and a terminal portion formed continuously with the connecting portion are provided. Since the terminal is configured and the terminal portion is fixed to the circuit board, the terminal for external connection can be configured by a part of the side wall portion of the frame, thereby reducing the number of parts and reducing the cost of the electronic device. it can.

The side wall is provided with a continuous portion connecting the upper end of the frame, a notch is formed at a lower portion of the continuous portion, and the notch is extended from an edge of the notch to form the connection. When the portion and the terminal portion are provided, the frame is connected to the upper portion of the cutout portion by the connecting portion, so that the strength of the frame can be increased and the deformation of the frame can be prevented.

Further, a continuous portion connecting the lower end portion of the frame is provided on the side wall portion, a cutout portion is formed at an upper portion of the continuous portion, and the cutout portion is extended from an edge of the cutout portion to form the connection. When the portion and the terminal portion are provided, the frame is connected by the connecting portion below the notch, so that the strength of the frame can be increased and the deformation of the frame can be prevented.

Further, when the connecting portion is led out into the frame, the terminal portion is positioned in the frame, and the terminal portion is fixed to the circuit board in the frame.
Since the terminals can be disposed at desired positions on the circuit board in the frame, the positions at which the terminals are disposed can have design flexibility.

According to the method of manufacturing an electronic device of the present invention, the electronic device includes a frame formed of a sheet metal, and a circuit board held by the frame. Providing a terminal composed of a connecting portion integrally formed on the side wall portion and a terminal portion formed continuously with the connecting portion, and holding the circuit board on the frame;
The terminal portion is fixed to the circuit board, the connection portion is cut, the side wall portion and the terminal portion are separated, and the terminal for external connection is formed. It can be constituted by a part of the unit, and the number of parts can be reduced, and the cost of the electronic device can be reduced.

A part of the connecting portion is led out of the frame, the terminal portion is positioned in the frame, the terminal portion is fixed to the circuit board in the frame, and the connecting portion is fixed outside the frame. When the portion is cut to separate the side wall portion and the terminal portion, the connecting portion can be cut using a cutting machine outside the frame, so that the manufacturing process can be automated and the terminal for external connection can be achieved. Workability and productivity in the formation of the film can be improved.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view of an electronic apparatus according to a first embodiment of the invention.

FIG. 2 is an exemplary sectional view of the electronic apparatus according to the first embodiment of the invention.

FIG. 3 is an explanatory view showing the method of manufacturing the terminal of the electronic device according to the first embodiment of the present invention.

FIG. 4 is an exemplary perspective view illustrating the method for manufacturing the electronic device according to the first embodiment of the invention.

FIG. 5 is an exemplary perspective view illustrating the method for manufacturing the electronic device according to the first embodiment of the invention.

FIG. 6 is an exemplary perspective view illustrating a method for manufacturing an electronic device according to a second embodiment of the invention.

FIG. 7 is an explanatory view showing a method for manufacturing a terminal of an electronic device according to a second embodiment of the present invention.

FIG. 8 is an exemplary sectional view of an electronic apparatus according to a second embodiment of the invention.

FIG. 9 is a perspective view of a conventional electronic device.

FIG. 10 is a cross-sectional view of a conventional electronic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic device 2 Frame 3 Side wall part 4 Side wall part 4a Notch part 4b Continuous part 4c Extension part 4d Bending line 4e Bending line 5 Side wall part 8 Circuit board 9 Insulating board 9a Hole 9b Protrusion piece 10 terminal 10a connection part 10b terminal Part 10c Cut line 11 Electronic device 12 Frame 13 Side wall part 14 Side wall part 14a Notch part 14b Continuous part 14c Extension part 14d Bending line 14e Bending line 15 Side wall part 20 Terminal 20a Connecting part 20b Terminal part 20c Cutting line

Claims (6)

[Claims] 1. A frame formed of a sheet metal and holding a circuit board, and an external connection terminal fixed to the circuit board, wherein a part of a side wall of the frame is extended to form the side wall. A connecting portion separated from the portion and a terminal portion formed continuously with the connecting portion are provided, the terminal is configured by the connecting portion and the terminal portion, and the terminal portion is fixed to the circuit board. Electronic equipment characterized by the above. 2. A continuous portion connecting the upper end portion of the frame is provided in the side wall portion, and a cutout portion is formed at a lower portion of the continuous portion.
The electronic device according to claim 1, wherein the connecting portion and the terminal portion are provided so as to extend from an edge of the notch. 3. A connecting portion connecting the lower end portion of the frame is provided on the side wall portion, and a cutout portion is formed on an upper portion of the connecting portion.
The electronic device according to claim 1, wherein the connecting portion and the terminal portion are provided so as to extend from an edge of the notch. 4. The terminal according to claim 1, wherein the connecting portion is led into the frame, the terminal portion is positioned in the frame, and the terminal portion is fixed to the circuit board in the frame. , 2 and 3. 5. A connecting portion, comprising: a frame formed from a sheet metal; and a circuit board held by the frame, wherein a part of a side wall of the frame is cut and raised, and a connecting portion formed integrally with the side wall. And a terminal comprising a terminal portion formed continuously with the connecting portion, and holding the circuit board on the frame, fixing the terminal portion to the circuit board, and cutting the connecting portion. A method for manufacturing an electronic device, wherein the side wall portion and the terminal portion are separated to form a terminal for external connection. 6. A part of the connecting portion is led out of the frame, the terminal portion is positioned in the frame, the terminal portion is fixed to the circuit board in the frame, and the terminal portion is fixed outside the frame. The method for manufacturing an electronic device according to claim 5, wherein the connecting portion is cut to separate the side wall portion and the terminal portion.