JP2000077144A - Ac adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the whole of an adaptor thinner and strengthen the connection at an inlet, by cutting out a part of a built-in power supply circuit board, a lower end part of the inlet having a projecting part and a recessed part to be fitted into the cut-out part, and fitting the projecting and recessed parts to the cut-out part of the board. SOLUTION: For fitting an inlet 5 having projecting and recessed parts to a board 1 having a cut-out part 2, the projecting part of the inlet 5 is adapted to fit to the cut-out part of the board 2, and the recessed part of the inlet 5 is adapted to make contact with the board 1. Stresses are exerted on the inlet 5 every time a plug is attached thereto and detached therefrom, the contact of the recessed part of the inlet 5 with the board 1 is important, thus, the inlet 5 and the board 1 are firmly fixed to each other, and a device can be made thinner by the thickness of the board 1. Therefore, an AC adapter can be made thinner without damaging safety of the inlet 5 and the connection between the AC adaptor and the inlet 5 is strengthened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin AC adapter for electronic equipment.

[0002]

2. Description of the Related Art Light-weight and small-sized devices, mainly OA equipment and home electric appliances, have been developed, and accordingly, power supplies have also been reduced in size and weight. OA devices such as word processors and personal computers are increasingly used personally, and smaller and thinner OA devices tend to be preferred. For home appliances, portable ones are also required to be smaller and lighter.

A conventional AC adapter has a shape as shown in FIG. That is, in the drawings, 1 is a substrate, 3 is a terminal, 4 is a protrusion, and 5 is an inlet. Conventionally, when fixing the inlet to the substrate, the lower end of the inlet is directly placed on the substrate to fix the inlet to the substrate.

[0004] The overall thickness of the AC adapter is determined by the height of the tallest component mounted on the board. And, the AC adapter usually has the tallest part, especially at the inlet. Therefore, it was not an exaggeration to say that the thickness of the entire AC adapter was determined by the height of the inlet.

As described above, it is necessary to make the inlet as thin as possible.
There was a limit to how thin the adapter could be.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an AC adapter by particularly improving an AC adapter, in particular, an inlet portion.
Adaptu-There is a plan to reduce the overall thickness.

[0007]

The present invention uses an inlet having a concave portion and a convex portion at a lower end part and a partially cut-out substrate, and the cut-out portion of the partially cut-out substrate and the inlet concave and convex portion. Is characterized in that the entire body is made thinner by fitting.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing one embodiment of the present invention, in which an inlet having an uneven portion is not yet fitted on a substrate having a cutout portion. The terminals are L-shaped. The inlet projection fits exactly into the substrate cutout.
In addition, the inlet recess is in contact with the substrate.

The contact between the recessed portion of the inlet and the substrate is very important, and a stress is applied to the inlet portion each time the plug is inserted and removed. And inlet can be fixed.

On the other hand, in the conventional connection as shown in FIG. 5, the protruding portion is easily broken by the stress of insertion and removal of the outlet. With such a structure, the apparatus can be made thinner by the thickness of the substrate. FIG. 2 is a view after the inlet and the substrate are fixed, and it can be seen that the apparatus is thinner by the thickness of the substrate as compared with the conventional type of FIG. FIG. 3 is a front view of the fixing of the inlet, and it can be seen that the device is thinner. FIG. 4 is an overview of an AC adapter, and the practice of the present invention allows the overall thickness to be significantly reduced.

[0011]

As described above, the AC adapter of the present invention has a thinner AC adapter without deteriorating the safety of the inlet, and furthermore, the connection between the AC adapter and the inlet is strengthened to increase industrial applicability. It is.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention in which a substrate and an inlet are fixed.

FIG. 3 is a front view of one embodiment of the present invention.

FIG. 4 is a side view of the AC adapter of the present invention.

FIG. 5 is a side view of a conventional example.

FIG. 6 is a side view of a conventional example in which an inlet is fixed to a substrate.

FIG. 7 is a front view of a conventional example.

FIG. 8 is a side view of a conventional AC adapter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Board 2 Notch 3 Terminal 4 Projection 5 Inlet 6 AC plug insertion part 7 Electronic component 8 Case 9 DC cord

Claims (1)

[Claims] 1. An AC adapter for supplying power to an electronic device by inserting a power plug connected to a commercial power supply into an inlet, a part of a power supply circuit board built therein is cut off, and the lower end of the inlet is cut off. An AC adapter characterized in that the portion has a convex portion and a concave portion that fit into the cutout portion, and the whole is thinned by fitting the substrate cutout portion and the inlet concave / convex portion.