JPH03293933A - Wireless telephone - Google Patents

Abstract

PURPOSE:To enable time required for charging operation to be constant by supplying a drive power supply to a transmission/reception circuit which is provided within a main unit when performing charging operation through a second power supply input terminal which is provided at this main part. CONSTITUTION:When a charging device 25 is connected, power is supplied to a power supply input terminal for charging 14 and a power input terminal for relay 15 through a power supply output terminal for charging 22, Then, a relay switch 10 is excited. thus shutting off conduction between an anode of a battery 8 and a first power supply output terminal 12. Then, a power supply for charging is supplied to an anode of the battery 8 through the power supply input terminal for charging 14 for performing charging operation. At this time, when a wireless telephone is used, power is supplied to a transmission/ reception circuit 3, etc., through a second power output terminal 21 and a second power supply input terminal 20.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of Application The present invention relates to a radio telephone that transmits and receives information signals as radio waves. A storage type power supply device supplies driving power through a first power input terminal, and the main body is provided with a second power input terminal for externally supplying driving power iIi'a. In addition, by providing a charging power input terminal for supplying charging power from the outside to the storage type power supply device, when using the storage type power supply device by supplying driving power from the outside, the storage type l1tffA can be used even during use. This allows charging power to be supplied to the device.

C1 Prior Art Conventionally, a wireless telephone has been proposed which is configured to transmit an information signal input as a voice or the like as a radio wave, and to receive the information signal transmitted as a radio wave and output it as a voice or the like. Such a radio telephone is configured to include a transmitting/receiving circuit for transmitting and receiving the radio waves. This transmitting/receiving circuit is configured to transmit and receive the radio waves by being supplied with driving power from the outside and performing a predetermined operation.

In addition to increasing portability, this type of wireless telephone is equipped with an electric storage power supply to enable continued use even when the external drive power supply is cut off, such as during a power outage. There are some that are composed of

This storage type power supply device is a so-called Ni-Cd1i battery or L
The battery is configured to include a battery that can be charged, such as an i'' battery, and a casing that houses the battery.

The casing is configured to be detachably attached to the main body of the wireless telephone in which the transmitting/receiving circuit is housed. A power output terminal connected to the anode of the battery and a ground terminal connected to the cathode of the battery are provided on the outer surface of the casing on the main body side.

When such a power storage type power supply device is attached to the main body of the radio telephone, the cathode of the battery is connected to the ground potential portion of the transmitting/receiving circuit via the ground terminal, and the anode is connected to the ground potential portion of the transmitting/receiving circuit via the ground terminal. is connected to a part of the transmitting/receiving circuit to which power is supplied through the transmitting/receiving circuit, and supplies power to the transmitting/receiving circuit.In addition, this storage type power supply device is capable of charging the battery.
It is equipped with a charging power input terminal and a charging ground terminal. The charging power input terminal is connected to the power output terminal. The charging ground terminal is connected to the ground terminal.

A charging device is used to perform a charging operation on the storage type power supply device attached to the main body of the radio telephone. This charging device includes a power output contact connected to the charging power input terminal and a ground contact connected to the charging ground terminal. This charging device is configured to supply charging power to the battery through the power output contact and the charging power input terminal by being supplied with power from a so-called power line or the like. There is.

D1 Problem to be Solved by the Invention By the way, when performing a charging operation on the storage type power supply device attached to the main body of a non-VAA telephone as described above, if this wireless telephone is not used during this charging operation. , the time required for this charging operation is approximately constant. However, if this wireless telephone is used during the above-mentioned charging operation, the time required for the charging operation will vary.
When the wireless telephone is used during a charging operation for the battery of the storage type power supply device, the charging power is consumed as a driving source for the transmitting/receiving circuit, and the power supplied to the battery is reduced. This is because you end up doing it.

Therefore, if the wireless telephone is used while the battery is being charged, the time required for the charging operation is unknown, making it difficult to know when the charging operation is complete. Therefore, erroneous operations such as ending the charging operation before the battery is sufficiently charged or continuing the charging operation even though the charging operation has been completed are common.

In addition, for the above-mentioned storage type power source device, if a charging power source with a current corresponding to the battery of this storage type power source device is not supplied,
There is a possibility that the battery will be destroyed.

Therefore, the above-mentioned charging power source needs to control and supply voltage and current according to the storage capacity of the storage power supply device that performs the charging operation. It is not possible to increase the current.

SUMMARY OF THE INVENTION The present invention is proposed in view of the above-mentioned circumstances, and the present invention has an electric storage type power supply device, and even if the electric storage type power supply device is used during a charging operation, the time required for the charging operation is The purpose of the present invention is to provide a wireless telephone that does not fluctuate.

81 Means for Solving the Problems In order to solve the above-mentioned problems and achieve the above objects, a radio telephone according to the present invention includes a main body section comprising a transmitting/receiving circuit;
a storage type power supply device attached to the main body portion and supplying driving power to at least the transmitting/receiving circuit; the main body portion has a first power input for supplying driving power from the storage type power supply device; A terminal and a second power input terminal for supplying driving power from the outside are provided, and the storage type power supply device includes a charging 'rxs input terminal for supplying charging power from the outside. It is something that is established.

F9 action In the radio telephone according to the present invention, when the storage type power supply device is being charged, the second power input terminal provided in the main body is connected to the transmitting/receiving circuit provided in the main body. Since the driving power can be supplied through the charging circuit, even if it is used during the charging operation, the power for the charging operation is not consumed for driving the transmitting/receiving circuit.

G. Examples Specific examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the radio telephone according to the present invention includes a main body 1 and a storage type power supply device 2. As shown in FIG.

The main body portion 1 is configured to include a main body side outer casing 1a.

The main body side outer casing 1a is formed so that when the user grasps it, one end side can face the vicinity of the user's auricle and the other end side can face the vicinity of the user's mouth. has been done. A microphone device 4 is built into the other end of the main body side outer casing 1a. This microphone device 4 is configured to be able to detect sounds from outside through a through hole 4a provided at one end side of the main body side outer casing 1a.

The information signal detected as voice by the microphone device 4 is converted into an electrical signal and sent to the transmitting/receiving circuit 3 built in the main body side outer casing 1a.

The transmitter/receiver circuit 3 performs predetermined signal processing on the electrical signal sent from the microphone device 4, and
is transmitted outward as radio waves. Further, this transmitting/receiving circuit 3 receives radio waves sent from outside via the antenna 5. The transmitting/receiving circuit 3 converts the information signal received as a radio wave into an electrical signal through predetermined signal processing, and sends the electrical signal to the speaker device 6 built into one end of the main body side outer casing 1a. This speaker device 6 converts the sent electrical signal into audio. This speaker device 6 is connected through a through hole 6a provided on the other end side of the main body side outer casing 1a.
It is designed to allow sound to be emitted outward.

Further, an operating device 7 is built into the main body side outer casing la. The operating device f7 includes a plurality of operating switches (not shown) and the like.

The operating device 7 generates a predetermined control signal, such as a signal for specifying the destination of the radio waves to be transmitted, and sends it to the transmitting/receiving circuit 3 when the operating switch or the like is operated. It is configured.

By the way, the transmitting/receiving circuit 3 operates by being supplied with a power source 1 from the outside. A portion of the transmitting/receiving circuit 3 that is at ground potential is connected to a first ground terminal 19 provided at the other end of the main body side outer casing 1a. and,
A portion of the transmitting/receiving circuit 3 to which driving power is supplied is a first power input terminal 13 provided at the other end of the main body side outer casing 1a and a first power input terminal 13 provided at the side surface of the main body side outer casing 1a. It is connected to the power input terminal 20 of No. 2.

The storage type power supply device 2 has a power supply device side outer casing 2a.
Inside the outer casing 2a on the power supply side, there is a so-called Ni-Cd (Ni-Cd) IIT pond and LL.
It has a built-in battery 8 that can be used to charge a (lithium ion) battery, etc.

Above T! ! #One end of the device side outer casing 2a facing the main body 1 is configured to be detachably attached to the main body side outer casing 1a. One end of the power supply side outer casing 2a that is on the side of the main body side outer casing 1a is connected to the first power input terminal when the storage type power supply 2 is attached to the main body 1. The first to be done! A # output terminal 12 and a second ground terminal 18 connected to the first ground terminal I9 are provided.

In this storage type power supply device 2, the anode of the battery 8 is
It is connected to the first power output terminal 12 via a relay switch IO. Further, the anode of this battery 8 is connected to the source output terminal 12 via the diode 11. That is, the relay switch 10 and the diode 11 are connected in parallel. The relay switch IO is connected to the battery 8 in a de-energized state.
The anode of the battery 8 and the first power output terminal 12 are electrically connected to each other, and the anode of the battery 8 and the first power output terminal I2 are electrically disconnected in the excited state. The diode 11 is connected to the first power output terminal 1 from the pond 8.
The direction toward 2 is defined as the forward direction. Further, the anode of the battery 8 is connected to a charging RAM input terminal 14 provided on the side surface of the power supply side outer casing 2a.

The cathode of the battery 8 is connected to the second ground terminal 18 and a third ground terminal 9 provided on the side surface of the power supply side outer casing 2a.

The side surface of the power supply side outer casing 2a, which is used for charging i.
i Near the power input terminal 4, there is a relay power input terminal 1.
5 is provided. This relay power input terminal 15 is connected to the base terminal of a transistor 17 via a resistor 16. This transistor 17 has a collector terminal connected to the control terminal of the relay switch IO, and an emitter terminal connected to the third ground terminal 9.

That is, when power is supplied to the relay power input terminal 15, the base terminal of the transistor 17 is brought to a high potential, and the transistor 17 is turned on.
The relay switch 10 is configured to cut off conduction between the anode of the battery 8 and the first power output terminal 12 when excited.

When such a storage type power supply device 2 is attached to the main body 1, the cathode of the battery 8 is connected to the ground potential portion of the transmitting/receiving circuit 3 via the second and first ground terminals 18 and 19. At the same time, the anode is connected to a portion of the transmitting/receiving circuit 3 to which driving power is supplied via the relay switch 10, the diode 11, the first power output terminal 12, and the first power input terminal 13. , supplies power to the transmitting/receiving circuit 3.

In the wireless telephone according to the present invention configured as described above, in order to perform a charging operation on the battery 8 of the storage type iIt# device 2, the charging device 25 is connected to the second battery via the connector 24. It is connected to the power input terminal 20, the relay power input terminal 15, the charging power input terminal 14, and the third ground terminal 9. The connector 24 has a second power output terminal 2 connected to the second TL source input terminal 20, a charging power input terminal 2 connected to the relay power input terminal 15 and the charging power input terminal 14. A fourth terminal connected to the power output terminal 22 and the third ground terminal 9
A ground terminal 23 is provided.

The charging device 25 is supplied with power via a power plug 26 from a so-called power line or an on-vehicle battery mounted on a car, and is connected to the second t-source output terminal 21 and the charging power output terminal 22. It is configured to output DC power through the The power output from the second power output terminal 21 has a voltage and current that can drive the transmitting/receiving circuit 3 and the like constituting the main body 1. On the other hand, the power output from the charging power output terminal 22 is N, 'IQ for charging, which has a voltage and current according to the storage capacity of the battery 8. The fourth ground' terminal 23 is set to the ground potential.

When the charging device 25 is connected to this radio telephone, power is supplied to the charging power input terminal 14 and relay NdQ input terminal 15 via the charging power output terminal 22. Then, the relay switch IO is brought into an energized state and cuts off conduction between the anode of the battery 8 and the first power output terminal 12. Then, the battery 8 is supplied with charging power to the anode from the charging power input terminal 14, and is subjected to a charging operation.

At this time, when the transmitting/receiving circuit 3 etc. operate due to the use of this radio telephone, the transmitting/receiving circuit 3 etc. is charged with the second Tj, the source output terminal 21 and the second Power is supplied through the power input terminal 20 of the device. Therefore, even when this wireless telephone is used, the transmitting/receiving circuit 3 and the like do not consume the charging power, and the charging operation for the battery 8 is always performed.
It will be completed in about a certain amount of time.

In addition, when this radio telephone is being used during charging operation, if the power supply to the second 1 and power input terminal 20 is cut off due to an accident or erroneous operation, the diode 11 In the on state, the battery 8 continues to supply power to the first power input terminal 13 . Therefore, in this radio telephone, even if the power supply to the second t-source input terminal 20 is cut off during the charging operation, there is no risk that the use of the radio telephone will be interrupted.

H1 Effects of the Invention As described above, in the radio telephone according to the present invention, when the storage power supply device is being charged, the transmitting/receiving circuit provided in the main body is A driving power can be supplied to the second one via the source input terminal.

Therefore, even if this wireless telephone is used during the above-mentioned charging operation, the power for the above-mentioned charging operation is not consumed to drive the above-mentioned transmitting/receiving circuit. Even when used during operation, the time required for the charging operation does not vary.

That is, the present invention provides an IT-less handset that has a power storage type power supply device and is configured so that the time required for the charging operation does not change even if the power storage device is used during a charging operation. It is possible.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view schematically showing the configuration of a wireless telephone according to the present invention and a charging device used in the wireless telephone.

Claims (1)

[Scope of Claims] A main body including a transmitting/receiving circuit; and a storage type power supply device attached to the main body and supplying driving power to at least the transmitting/receiving circuit; The storage type power supply device is provided with a first power input terminal to which driving power is supplied from the power supply device and a second power input terminal to which driving power is supplied from the outside. A wireless telephone equipped with a charging power input terminal for supplying charging power from an external source.