JPH043554Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an AC
This is an AC adapter that supplies DC output to various electrical devices such as video cameras and electric razors.
In addition to its function as an adapter, this AC also functions as a charger to charge a removable storage battery.
This relates to the configuration of the adapter.

[Conventional technology and its problems]

In this type of AC adapter, if the structure was such that the DC output function and the charging function could be operated at the same time, the circuit etc. would become complicated, making it large and expensive. For this reason, it is common to be configured so that only one of the DC output function and the charging function can be selectively obtained. In general, the output from the DC output function and the output from the charging function have different voltage and current characteristics, and if one output is applied to the other output circuit, there is a risk of destroying the circuit elements. be. Therefore,
AC adapters that cannot operate the DC output function and charging function independently and at the same time are
When loads are connected to both the output terminal and the charging terminal, there must be a means for selecting which one to operate.

Conventionally, a changeover switch was provided in the output circuit,
When a load is connected to either the DC output terminal or the charging terminal, this switch is configured to automatically operate to cut off the output to the other terminal. However, since this switch switches the main current, it must have a large current capacity, resulting in high cost and a large size. There were also design problems, such as the need to complete the operation of the switch before the load was connected, making timing settings difficult. Furthermore, even though the user tried to use the AC adapter function, there was no DC output because a storage battery was installed.
On the other hand, if you try to charge the battery but it doesn't charge, etc.
It was found to be difficult to use, as it could operate against the user's will.

[Purpose of invention]

The present invention aims to provide a configuration of an AC adapter that also serves as a charger, which can prevent a load from being connected to both the DC output terminal and the charging terminal at the same time.

[Means for solving problems]

This invention provides a DC power supply to the part covered by the storage battery when the storage battery is attached to the AC adapter body.
It is characterized by a configuration with output terminals,
When one of the DC output function and charging function is in use, the other function cannot be used structurally.

〔Example〕

FIG. 1 shows an embodiment of the present invention.
The AC adapter main body 10 equipped with a plug 11 for connecting to an AC power source has a recess 12 for attaching a storage battery 20, and a terminal 14 for DC output is provided on the bottom surface of the recess 12. . The DC output is taken out by inserting the plug 32 at one end of the connection cord 30 into the DC output terminal 14, and the plug 34 at the other end is connected to an electrical device such as a video camera.
It is used by connecting to the input terminal 42 of 0.

On the other hand, when using the charging function of this AC adapter, that is, when charging the storage battery 20 using this AC adapter, pull out the plug 32, store the storage battery 20 in the recess 12, and charge the electrodes of the storage battery 20. This is done by connecting to the terminal 16 for use. Note that 18 indicates a display lamp.

Since the AC adapter according to the present invention is configured as described above, when the DC output function is used, the plug 32 is inserted into the recess 12 and the storage battery 20 cannot be attached.
The plug 32 cannot be inserted while the battery is being charged.

Note that the position where the DC output terminal 14 is provided is not necessarily limited to the bottom surface of the recess 12, but may be any other location as long as it is covered by the storage battery 20 attached for charging.

[Effect of idea]

According to the present invention, there is no fear that the DC output will be extracted when the storage battery is attached and charged.
When using DC output, there is no risk of attaching a storage battery. Therefore, it is not necessary to provide a changeover switch for cutting off one output in the output circuit, and it is possible to obtain an AC adapter that is compact and easy to use.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention. 10... AC adapter main body, 16... Charging terminal, 14... DC output terminal, 20... Storage battery.

Claims (1)

[Scope of utility model registration request] Converts externally supplied AC power to DC
In an AC adapter that functions as a charger and has an AC adapter function of outputting to a DC output terminal and a function of charging a removable storage battery, the DC output terminal is provided in the part covered by the storage battery when the storage battery is attached. Charger/AC with the following features:
adapter.