JP2542562Y2 - AC adapter with FG terminal - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC adapter with an FG terminal for grounding , which converts AC to DC and supplies DC power to various electronic devices.

[0002]

2. Description of the Related Art There are various types of AC adapters. Among them, there is an AC adapter in which an FG terminal composed of a screw as a main component for removing noise is provided on an outer surface of a case. FIG. 2 shows a conventional schematic exploded perspective view of the AC adapter with an FG terminal.

[0003]

In this conventional AC adapter with an FG terminal, the FG terminal 11 'is previously insert-molded when one of the synthetic resin half cases 1' is molded by a mold. Was. Therefore, the printed circuit board 4 '
Is connected to the heat sink 6 '. When connecting the heat sink 6' to the FG terminal 11 ', one end of the lead wire 12' is connected to the heat sink 6 'and the other end is connected to the base of the FG terminal 11'. There is a problem that components such as lead wires and complicated connection work are required during assembly since they are connected by soldering after being entangled.

[0004] The present invention has been proposed in view of the above points, and it is an object of the invention to provide an AC adapter with an FG terminal which can reduce the number of parts and can be easily assembled.

[0005]

According to the present invention, an FG terminal mounting portion 10 is formed integrally with a heat sink 6 in advance.
A screw functioning as an FG terminal is screwed into the terminal mounting portion 10 and the FG terminal 11 is inserted into an FG terminal mounting hole 2 formed in one of the case halves 1 to achieve the above object.

[0006]

As described above, according to the present invention, the FG terminal mounting portion 10 of the screw which becomes the FG terminal 11 for grounding is formed directly on the heat sink 6, and the FG terminal mounting portion 10 has a thread groove formed on the inner peripheral surface. because its internal pre-screwed screws into and to insert the FG terminal consisting to the FG terminal mounting holes 2 of one of the case halves 1, to take the earth, have
Tasks such as connecting the Chiichi lead wire is not required,
In addition, a complicated soldering process is omitted, and cost and mass production are improved.

[0007]

FIG. 1 shows an embodiment of the present invention. In the drawing, 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 the case half. Three, three
a is a cord insertion hole. Reference numeral 4 denotes a printer board in which predetermined electronic components 5 for obtaining a function as an AC adapter are incorporated. Reference numeral 6 denotes a heat sink made of a material having good heat dissipation such as aluminum provided on the periphery of the printed board 4. , And is bent substantially in an L-shape. Reference numeral 7 denotes an insertion hole for a connector (not shown) for connecting to the printed board 4 formed on one of the long members 8 of the heat sink 6.

A substantially rectangular plate-like portion 9 is formed at the bottom of the corner of the heat sink 6, and the plate-like portion 9 has a cylindrical shape on the side facing the one case half 1.
Further, an FG terminal mounting portion 10 having a screw portion formed on the inner peripheral surface is formed. The plate portion 9 and the FG terminal attachment portion 10 are formed integrally with the heat sink 6 and are formed at the time of molding the heat sink. A screw functioning 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 made of a screw of the heat sink 6 provided on the printed circuit board 4 is attached to the FG terminal mounting hole of the one case half 1. 2 and the head of the screw may be exposed on its outer surface. FG
The terminals 11 and the FG terminal mounting holes 2 are of course provided at corresponding positions. The ground of the printed circuit board 4 is connected to the heat sink 6. After a while
An AC adapter can be assembled by joining the other case half (not shown) formed in substantially the same manner as the one case half 1 by bonding with an adhesive or ultrasonic welding or the like.

[0010]

As described above, according to the present invention, the heat sink 6 is provided with the grounding FG terminal 11 in advance , and the FG terminal 11 is inserted into the FG terminal mounting hole 2 formed in the one case half 1. Since the components need only be positioned, components such as lead wires become unnecessary, and the number of components can be reduced. Further, unlike the conventional method, a step 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 connecting by soldering is not required. Mass production can be achieved, and the cost can be reduced in combination with the reduction in the number of parts.

[Brief description of the drawings]

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

FIG. 2 shows a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 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)

(57) [Scope of request for utility model registration] An FG terminal mounting portion (10) is integrally formed on a heat sink (6) in advance, and the FG terminal mounting portion (1) is formed.
A screw which functions as an FG terminal for grounding is screwed into 0), and this FG terminal (11) is inserted into an FG terminal mounting hole (2) formed in one case half (1). AC adapter with FG terminal.