JPH0677492U - AC adapter with FG terminal - Google Patents

Abstract

(57) [Summary] [Objective] To provide an AC adapter with an FG terminal in which the number of parts is reduced and the number of assembling steps is also reduced. [Structure] The heat sink (6) is attached to the FG terminal mounting portion (1
0) is integrally formed in advance, and this FG terminal mounting portion (10)
A screw functioning as an FG terminal is screwed in and the FG terminal (11) is inserted into the FG terminal mounting hole (2) formed in one case half body (1).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an AC adapter with an FG terminal that converts AC into DC and supplies DC power to various electronic devices.

[0002]

[Prior art]

 There are various types of AC adapters, but among them, there is one that has an FG terminal on the outer surface of the case, whose main component for eliminating noise is a screw. FIG. 2 shows a conventional schematic exploded perspective view of the AC adapter with the FG terminal.

[0003]

[Problems to be solved by the device]

 In this conventional AC adapter with FG terminal, the FG terminal 11 'was previously insert-molded when the one-half case 1'made of synthetic resin was molded with a mold. Therefore, the ground of the printed circuit board 4'is led to the heat sink 6 ', and when connecting the heat sink 6'and the FG terminal 11', one end of the lead wire 12 'is connected to the heat sink 6'and the other end is connected. However, there is a problem in that parts such as lead wires and complicated connecting work are required at the time of assembling, since they are entangled with the base of the FG terminal 11 'and then connected by soldering.

The present invention has been proposed in view of the above points, and an object thereof is to provide an AC adapter with an FG terminal that can reduce the number of parts and can be easily assembled.

[0005]

[Means for Solving the Problems]

 In the present invention, the heat sink 6 is integrally formed with the FG terminal mounting portion 10 in advance, and a screw functioning as an FG terminal is screwed into the FG terminal mounting portion 10 to form the FG terminal 11 on one case half body 1. The above-mentioned purpose is achieved by the configuration in which the FG terminal mounting hole 2 is inserted.

[0006]

[Action]

 As described above, according to the present invention, the heat sink 6 is directly formed with the FG terminal mounting portion 10 of the screw which becomes the FG terminal 11, and the FG terminal mounting portion 10 has a thread groove formed on the inner peripheral surface thereof. Since the screws are pre-screwed and the FG terminal composed of these is inserted into the FG terminal mounting hole 2 of the one half case 1, the lead wire is not required, and the complicated soldering process is omitted. We are working to improve production and mass production.

[0007]

【Example】

 FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 1 denotes one case half made of a molded product, and a cylindrical FG terminal mounting hole 2 is formed at a predetermined position inside thereof. Reference numerals 3 and 3a are cord insertion holes. Further, 4 is a printer board in which a predetermined electronic component 5 for obtaining a function as an AC adapter is incorporated, and 6 is made of a material having a good heat dissipation property such as aluminum provided around the printed board 4. The heat sink is bent into an almost L shape. Reference numeral 7 is an insertion hole of a connector (not shown) for connecting to the printed circuit board 4 formed on one elongated member 8 of the heat sink 6.

Then, a substantially rectangular plate-shaped portion 9 is formed on the bottom of the corner of the heat sink 6, and the plate-shaped portion 9 has a cylindrical shape on the surface facing the one case half body 1. In addition, the FG terminal mounting portion 10 having the screw portion formed on the inner peripheral surface is formed. The plate-shaped portion 9 and the FG terminal mounting portion 10 are integrally formed with the heat sink 6, and are molded during heat sink molding. Then, a screw that functions as the FG terminal 11 is screwed into the FG terminal mounting portion 10 by a screwdriver.

In assembling, when the printed circuit board 4 is housed in the case half 1, the FG terminal 11 including the screw of the heat sink 6 provided on the print substrate 4 is attached to the FG of one case half 1. It suffices to insert it into the terminal mounting hole 2 and expose the screw head on the outer surface thereof. Of course, the FG terminal 11 and the FG terminal mounting hole 2 are provided at the corresponding positions. The ground of the printed circuit board 4 is connected to the heat sink 6. After that, the AC adapter can be assembled by joining it to another case half body (not shown) which is molded in substantially the same manner as the one case half body 1 by an adhesive agent or ultrasonic welding to be integrated. .

[0010]

[Effect of device]

 As described above, according to the present invention, since the heat sink 6 is provided with the FG terminal 11 in advance and the FG terminal 11 is located in the FG terminal mounting hole 2 formed in the one half case 1, the lead is provided. Since parts such as lines are not needed, the number of parts can be reduced. Also, unlike the conventional method, the process of connecting one end of the lead wire to the heat sink side and tying the other end to the base of the FG terminal and soldering connection is not required, so that the assemblability is greatly improved. Mass production can be achieved, and in combination with the reduction in the number of parts, it is possible to achieve cost reduction.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of an embodiment of the present invention.

FIG. 2 shows a conventional example.

[Explanation of Codes] 1 One case half 2 FG terminal mounting hole 3 Lead wire insertion hole 4 Printed circuit board 5 Electronic component 6 Sheet sink 7 Connector insertion hole 8 One long member 9 Plate portion 10 FG terminal mounting portion 11 FG terminal

Claims (1)

[Scope of utility model registration request] 1. An FG terminal mounting portion (10) is previously integrally formed on a heat sink (6), and the FG terminal mounting portion (1) is formed.
0) screw a screw that functions as an FG terminal to this FG
F formed with terminal (11) on one case half (1)
F characterized by being inserted into the G terminal mounting hole (2)
AC adapter with G terminal.