JPS589299Y2 - Battery replacement device for memory elements - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery replacement device for an auxiliary power source that maintains the memory state of a semiconductor memory element in an electronic device using a semiconductor memory element.

In recent years, semiconductor memory elements (commonly known as semiconductor memory) have been used in electronic devices such as microcomputers, television receivers,
It has been used for a wide variety of purposes in a wide variety of equipment such as audio equipment.

In addition, devices using these semiconductor memory elements need to maintain their memory state even when the main power is turned off, and for this purpose, dry cells are mainly used as an auxiliary power source to supply voltage and maintain the memory state. .

However, if the auxiliary power supply for maintaining the memory state of these semiconductor memory elements is turned off even momentarily, the memory state of the memory element will disappear.

Therefore, it was necessary to pay the utmost attention to replacing the battery as an auxiliary power source.

An object of the present invention is to provide a device that prevents careless replacement of the auxiliary battery for the storage state retention power source.

According to the present invention, in an electronic device using a semiconductor memory element, the battery of the power source for maintaining the memory state of the element cannot be replaced except when the main power source of the electronic device is applied.

As will be described later as an example of this, an electromagnetic key is provided that operates to prevent the lid of the battery compartment from being opened except when the main power is turned on.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing the main parts of a television receiver to which the present invention is applied.

1 is the housing of the device, 2 is the lid of the storage compartment for the auxiliary battery for holding power, 3 to 5 are buttons such as control knobs of the device,
6 is a battery as an auxiliary power source.

7 is a plunger, 11 is a plunger shaft, 8 is a switch that turns on and off the power of the plunger 7 when replacing the battery 6;
Reference numeral 9 indicates a handle of the device, and reference numeral 10 indicates a plunger power cord.

FIG. 2 is a sectional view taken along the line AA' in FIG. 1 showing the set state of the lid 2 of the battery compartment, and FIG. 3 is a sectional view taken along the AA' line of FIG. 1 showing the state where the lid 2 is opened when replacing the battery. It is.

In FIG. 2, when the device is in the normal state, the power switch 8 of the plunger 7 is in the OFF state, and no power flows through the plunger 7, so the shaft 11 of the plunger 7 falls down due to its own weight and is inserted into the key 13. becomes.

Therefore, the lid 2 of the battery storage section 12 cannot be opened, and the battery 6 cannot be taken out unexpectedly.

Further, if the electronic device is not connected to an operating power source such as a commercial power source, or in the event of a power outage, even if the switch 8 is turned on, power will not flow to the plunger 7, so the battery cannot be replaced.

Therefore, the memory function of the memory element is maintained by the battery 6.

Next, when the power switch 8 of the plunger I is turned on, current flows through the plunger 7, and the shaft 11 of the plunger T is absorbed.

Then, the lid 2 of the battery storage section 12 can be opened as shown in FIG. 3, allowing the battery 6 to be replaced.

As explained in the above embodiments, the present invention provides that when the main power source of the electronic device is not supplied, the electromagnetic key by the plunger does not operate, and the battery for the auxiliary power source for maintaining the memory state of the semiconductor memory element is unexpectedly replaced. I'm trying not to.

Therefore, the memory state will not be erased by mistake,
The effect is great.

Although the electronic device in this embodiment is a television, the present invention is not limited to this and can be applied to any device that uses a semiconductor memory element and is equipped with an auxiliary power source to maintain its memory state. Needless to say.

As described above, the present invention provides an electronic device having a semiconductor memory element constituting a volatile memory and a battery for backup power supply thereof, including a battery storage section, a hole for replacing the battery, and a hole for replacing the battery. Focusing on the fact that a lid is generally provided to cover the semiconductor memory element, the main power supply that supplies a predetermined amount of power to the internal circuit of this type of electronic equipment has at least a lid for maintaining the memory state. A detection means for detecting that power is being supplied is provided, and when the detection output from this detection means is not given, the closed state of the upper cover is fixed, and when the detection output is given, the closed state is fixed. By arranging a control means for releasing the fixation, a battery exchange device is provided in which the power supply for maintaining the memory state to the semiconductor memory element is not inadvertently cut off when replacing the power source.

Therefore, in this embodiment, the detection means and the control means are constituted by one plunger 7, so that it can be realized with the simplest structure.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a main part of a television receiver housing to which an embodiment of the present invention is applied, Fig. 2 is a sectional view taken along line A-A' in Fig. FIG. 3 is a sectional view showing a possible state in which the electromagnetic key 13 shown in FIG. 2 can be opened with battery replacement force. 6...Battery, 2...Lid, 12...
...Battery storage section, 8.10...Detection means, T,
11... Control means.

Claims (1)

[Scope of claim for utility model registration] Comprising a semiconductor element and a battery for its backup power supply,
In an electronic device that is provided with a battery storage section for storing the battery and an openable/closable lid that covers a hole drilled to enable replacement of the battery, the internal circuit of the electronic device is provided. a detection means for detecting that a main power supply supplying a predetermined amount of power to the semiconductor memory element is supplying at least power for maintaining a memory state to the semiconductor memory element by supplying the power; and a detection means for detecting the semiconductor memory element. A battery replacement device for a memory element, comprising a control means for fixing the closed state of the lid when no output is given, and releasing the fixing of the lid when a detection output is given.