KR200311030Y1 - portable electronic device - Google Patents

Abstract

The present invention is a portable electronic device comprising a connection jack connected to a communication port of an electronic device, a system main body having an electronic circuit therein, and a battery unit coupled to the system main body when carrying and separated from the communication port when carrying. Provide the device.

The portable electronic device of the present invention

The battery unit is provided with a connecting jack which is connected to the connecting jack and a protrusion formed in the housing of the battery unit when coupled, and the system main body is provided with a transfer switch and a switching circuit pressed by the protrusion. A technology configuration is disclosed in which the transfer switch supplies power to the system main body from the battery unit when the unit is coupled, and supplies power to the system main body from the communication port when the battery unit is separated.

Description

Portable electronic device

The present invention relates to a portable electronic device having a simple power supply. More specifically, a portable electronic device such as an MP3 player usually requires a large number of circuit components to form a power switching structure only in a circuit. The present invention relates to a portable electronic device, in which there is a fear of a malfunction, but which has a switching structure in which an electrical circuit and a mechanical switching structure are combined.

Universal Serial Bus (USB) is a plug-and-plug interface that has been widely used since Windows 98 for sending and receiving data to and from the computer and peripherals. Peripheral devices operate without a separate power supply because they supply 5V of operating power to peripherals. .

In general, a portable peripheral device connected to a USB port of a computer includes a MP3 player which receives power and data from a computer through a USB port and stores the data. A flash memory driver is a portable data storage device that uses a USB port to load data and loads data to another computer. have.

In addition, according to the trend of miniaturization of such portable electronic devices, the portable electronic device has a characteristic of a multifunction device implemented as a single device.

However, such a portable electronic device may cause a malfunction of the device due to an excessive or insufficient voltage caused by the difference between the battery and the USB port power source, and further damage the device.

In order to cure this phenomenon, conventionally, a switching circuit is provided in the power supply circuit shown in FIG.

1 is a circuit diagram illustrating a power supply circuit of a portable electronic device according to the related art.

The portable electronics are designed to operate at 1.5V, with the battery power and the USB power line connected to the Vbus line. When a specific power source of the battery or the USB port is applied to the Vbus line, it is detected by the voltage detector 10. The voltage detector 10 outputs a "high" output signal to the Vout terminal if the voltage input to the Vin terminal is higher than the set voltage, and outputs a "low" output signal to the Vout terminal. At this time, the set voltage is set to, for example, 2.7 between the battery voltage 1.5V and the USB output voltage 5V. The "high" output signal of the voltage detector 10 is input to the CE terminal of the inversion circuit 20, and the output voltage is not applied to the Vout terminal of the inversion circuit 20 so that the transistor Q1 is not operated and thus the FET is operated. It doesn't work. In addition, when the Vout terminal of the voltage detector 10 is connected to the enable terminal EN of the voltage regulator 30 so that a "high" signal is output to the Vout terminal of the voltage detector 10, the voltage regulator 30 is activated and Vin The 5V input to the terminal is regulated to output 1.5V at the output terminal Vout to supply the system.

In addition, when the battery power of 1.5 V is applied to the Vbus, a "low" signal is output from the output terminal Vout of the voltage detector 10, and a voltage is applied to Vout of the inverting circuit 20 so that the transistor Q1 operates normally. When the FET is turned on, 1.5V of power is supplied to the system.

In the prior art of the above configuration, in order to use the power of 1.5V and the USB communication port as the system power of the portable electronic device, the circuit components have to be detected and operated or inoperative according to each power source. If a malfunction occurs in the circuit, the devices in the system may malfunction or burn out.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to connect a communication port of a computer to download data or to supply a power source for driving a system in a portable electronic device that transmits data to the computer. It is a simple structure when using the power supplied from the battery and the installed battery power, and it is possible to use the power supply and to prevent the occurrence of malfunction.

1 is a circuit diagram illustrating a power supply circuit of a portable electronic device according to the related art.

2 is a combined perspective view for explaining an embodiment of the present invention.

3 is an exploded perspective view for explaining an embodiment of the present invention.

4 is a circuit block diagram of a power supply unit for supplying power to the system main body of one embodiment of the present invention.

Features of the present invention for achieving these purposes,

A portable electronic device which can communicate by connecting to a communication port of an electronic device and can be carried separately from the communication port:

A system main body having an electronic circuit for communicating with the computer through the communication port and performing the independent function;

It is made of a battery unit with a built-in battery detachably installed in the housing of the system body;

A protrusion is formed in the housing of the battery unit, and a switch operated by the protrusion is provided in the electronic circuit. When the battery unit is attached to the system main body, the battery power is supplied to the electronic circuit. Separating the housing from the system unit is characterized in that for supplying power to the electronic circuit from the communication port.

In addition, other features of the present invention

In a portable electronic device comprising a connection jack to be connected to the communication port of the electronic device, and a system main body having an electronic circuit therein and a battery unit which is coupled to the system main body when carrying and separated from the communication port. :

The battery unit is provided with a connecting jack which is connected to the connecting jack and a protrusion formed in the housing of the battery unit when coupled, and the system main body is provided with a transfer switch and a switching circuit pressed by the protrusion. When the unit is coupled, the transfer switch supplies power to the system main body from the battery unit, and when the battery unit is detached, power is supplied to the system main body from the communication port.

In addition, the switching circuit in the present invention

A Vbus line connected to a power terminal of the communication port and a power terminal of the battery unit;

A power supply line for supplying power input to the Vbus line to an electronic circuit in the system main body when the transfer switch is pressed in the protrusion;

A voltage detector which detects a voltage of a power input to the Vbus line and outputs a comparison result by comparing the detected voltage with a preset voltage;

When the voltage of the Vbus line is higher than the preset voltage after receiving the comparison result by the voltage detector, the power of the Vbus line is output. If the voltage of the Vbus line is lower than the preset voltage, the voltage is not output. regulator;

And a voltage down circuit for lowering the output voltage of the voltage regulator to the operating voltage of the system body.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view for explaining an embodiment of the present invention, Figure 3 is an exploded perspective view for explaining an embodiment of the present invention.

The portable electronic device illustrated in FIGS. 2 and 3 may be a multi-function device that performs the functions of an MP3 player and a flash memory driver, but the concept of the present invention may be applied to various portable electronic devices.

In the system main body 100 of the portable electronic device, a connection jack 101 that can be connected to a computer communication port is installed in the system main body housing and connected to the electronic circuits therein.

In addition, in the present invention, the communication port is preferably provided with a power terminal as a USB communication port, the connection jack 101 is provided with a power terminal to receive a communication terminal and power to enable communication with the USB communication port. .

In addition, the battery unit 200 is detachably attached to one side and the bottom of the system main body 100. The battery unit 200 is provided with a housing for accommodating the battery and the battery therein, and a connection jack 201 connected to the connection jack 101 when the battery unit 200 is installed and detached. The housing has a linear shape such that a portion in which the battery is stored is detachably attached to the side of the system main body 100, and a portion where the connection jack 201 is installed is connected to the bottom of the system main body 100. It is bent from.

In addition, the housing of the battery unit 200 has guide edges formed at both sides in the longitudinal direction of the connecting portion so that the housing of the system main body 200 is guided and detached.

In addition, a protrusion 204 for operating a switch inside the system main body 200 is formed in a portion of the battery unit 200 to which the system main body 200 is connected.

In addition, the system main body 100 is provided with a switching switch for switching the power supplied from the battery power and the USB communication port, the housing of the system main body 100 when the battery unit 200 and the system main body 100 are combined A through hole 102 is formed at a position corresponding to the protrusion 204 so that the protrusion penetrates into the housing of the system main body 100, and the protrusion 204 passes through the through hole to operate the transfer switch. .

4 is a circuit block diagram of a power supply unit for supplying power to the system main body of one embodiment of the present invention.

The Vbus line is connected to the power port of the USB communication port and the battery power.

In addition, the power supply input terminal Vin of the voltage detector 10, the power input terminal of the voltage regulator 20, and the switching switch SW are connected to the Vbus line. In addition, the output terminal Vout of the output terminal 10 of the voltage detector 10 is connected to the enable terminal EN of the voltage regulator 20, and the output terminal of the voltage regulator is connected to the voltage down connected in parallel through the backflow prevention diode 40. It is connected to the diodes 41 and 42, and the electronic circuits of the other system main body are connected to the coupling point of the voltage down diodes 41 and 42 and the output terminal of the transfer switch SW.

In order to connect the portable electronic device to the USB communication port, the system main body 100 and the battery unit 200 must be separated. As described above, when the system main body 100 and the battery unit 200 are separated, the protrusion 201 The transfer switch SW is not operated. At this time, Vbus is connected to the input terminal Vin of the voltage detector 10 so that the preset voltage, preferably the preset voltage is compared with 2.7V, and when the USB communication port power supply 5V is input, the output terminal of the voltage detector 10 At Vout, a 'high' output signal is output, and the 'high' output signal is input to the enable terminal EN of the voltage regulator 20 to operate the voltage regulator. When the voltage regulator 20 is in an operating state, the Vbus voltage input to the input voltage terminal Vin of the voltage regulator 20 is regulated to output a voltage of 2.3V at the output voltage terminal Vout. The output voltage output from Vout is supplied to other electronic circuits in the system main body through the backflow prevention diode 30 and the voltage drop diodes 41 and 42.

In addition, in order to carry the portable electronic device, the system main body 100 and the computer USB communication port are separated to couple the system main body 100 and the battery unit 200. At this time, the protrusion 204 formed in the housing of the battery unit passes through the through hole 102 formed in the housing of the system main body 100 to press the switch SW to operate, in this case, the connection jack 101 and The power terminal of the connection jack 201 is connected so that battery power is supplied to the Vbus power line.

When the battery power supply 1.5V is supplied to the Vbus, 'low' is output from the Vout terminal of the voltage detector 10, and this 'low' signal is inputted to the enable terminal EN of the voltage regulator 20. (20) becomes inoperative and no voltage is output from the Vout terminal even when a voltage is applied to the input terminal Vin, and the battery power applied to the Vbus line supplies power to the other circuits of the system body via a switch (SW). Done.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by the utility model registration claims as described below and equivalents to the utility model registration claims.

As in the above object and configuration, two power supplies are supplied to the portable electronic device at the same time because the battery unit must be separated from the system main body to connect the portable electronic device to the communication port, and the battery and the system main body must be combined to carry the portable electronic device. It is prevented, and especially when carrying, the battery power is automatically turned on simply by mechanically solved by reducing the number of expensive electronic components required to implement this electronically, resulting in the effect of reducing the manufacturing cost.

Claims (3)

A portable electronic device capable of communicating by connecting to a communication port of a computer and being portable by being separated from the communication port: A system main body having an electronic circuit for communicating with the computer through the communication port and performing the independent function; It is made of a battery unit with a built-in battery detachably installed in the housing of the system body; A protrusion is formed in the housing of the battery unit, and a switch operated by the protrusion is provided in the electronic circuit. When the battery unit is attached to the system main body, the battery power is supplied to the electronic circuit. And a housing separated from the system unit to supply power to the electronic circuit from the communication port. In a portable electronic device comprising a connection jack to be connected to the communication port of the electronic device, and a system main body having an electronic circuit therein and a battery unit which is coupled to the system main body when carrying and separated from the communication port. : The battery unit is provided with a connecting jack which is connected to the connecting jack and a protrusion formed in the housing of the battery unit when coupled, and the system main body is provided with a transfer switch and a switching circuit pressed by the protrusion, so that the battery And the transfer switch supplies power to the system main body from the battery unit when the unit is coupled, and supplies power to the system main body from the communication port when the battery unit is separated. . The method of claim 2, wherein the switching circuit A Vbus line connected to a power terminal of the communication port and a power terminal of the battery unit; A power supply line for supplying power input to the Vbus line to an electronic circuit in the system main body when the transfer switch is pressed in the protrusion; A voltage detector which detects a voltage of a power input to the Vbus line and outputs a comparison result by comparing the detected voltage with a preset voltage; Receiving the comparison result by the voltage detector, the voltage of the Vbus line is higher than the preset voltage, and outputs the power of the Vbus line, and if the voltage of the Vbus line is lower than the preset voltage, the voltage is not output. regulator; And a voltage down circuit for lowering the output voltage of the voltage regulator to the operating voltage of the system main body.