JPH06204934A - Charging device for communication equipment of moving object - Google Patents

Abstract

PURPOSE:To omit the electric circuit that is needed for a moving object to secure the coincidence of polarity and to simplify the circuit constitution by charging a chargeable battery even when the moving object is inversely set to a fixing machine in regard of a charging device for the communication equipment of the moving object that supplies the charging voltage to the chargeable battery contained in the moving object. CONSTITUTION:A depressed slave device storing part 4 is formed on the upper surface 3a of a master device main body 3 to store the lower part 6b of a slave device main body 6. Then a pair of positive and negative charging terminals 12 and 13 are provided on the inner surface 4a of the part 4. The electric circuit of a master device 1 converts the commercial AC voltage into the DC voltage as conventional and supplies this DC voltage to both terminals 12 and 13. An antenna 5 is also added to transmit the radio signals between the device 1 and a slave device 2. A pair of positive and negative charging terminals 14 and 15 are provide on the edge 6c of the part 6b of the front face 6a of the body 6. And an auxiliary charging terminal 16 is provided approximately to it. Furthermore a key operating part 7 and an antenna 8 are provided on the face 6a, and contact is secured between both terminals 17 and 13 and also between the terminals 13 and 15 when the body 6 is erected at the part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device provided with a fixed device and a mobile device, and more particularly to charging of the mobile communication device for supplying a charging voltage to a rechargeable battery incorporated in the mobile device. Regarding the device.

[0002]

2. Description of the Related Art In a cordless telephone composed of a mobile communication device, for example, a master device which is a fixed device connected to a telephone line and a slave device which is a mobile device connected to the master device by a wireless line, It is known that a slave unit housing with a substantially concave shape is formed in the upper part of the main unit of the master unit, and by storing the lower part of the slave unit main body in this slave unit housing unit, the slave unit can be placed vertically or horizontally. Has been.

In this cordless telephone, as shown in FIG. 3, a charging device for supplying a charging voltage to a rechargeable battery 18 built in the slave unit 22 side is provided. This charging device includes a power supply unit 1 that receives a commercial power supply from the base unit 1 side.
0, and the power supply unit 10 has the above-mentioned charging circuit 11
And the parent device network 9 are connected. A telephone line is connected to the parent device network 9 and a positive charging terminal 12 is connected to the charging circuit 11.

The positive electrode charging terminal 12, together with the negative electrode charging terminal 13 connected to the ground, is disposed on the inner side surface of the slave unit accommodating portion with a required gap and exposed. On the other hand, for the slave unit 22 side, each charging terminal 1 on the main unit body side
In order to make one-to-one contact with the terminals 2 and 13, positive and negative charging terminals 14 and 15 are arranged in the lower part of the main body of the cordless handset. A diode bridge circuit 21 composed of several diodes is connected to the positive and negative charging terminals 14 and 15. The diode bridge circuit 21 is for matching the polarities, and one end thereof is connected to the ground, while the other end thereof is connected to the rechargeable battery 18 via the on-cradle detecting section 20 and the diode 17.

A nickel battery is used as the rechargeable battery 18, and a slave circuit 19 is connected to the positive electrode side.
The on-cradle detection circuit 20 detects the set state of the child device 22, and when the child device main body is placed and housed in the child device housing portion of the parent device 1, the operation control of the entire child device is performed. The ON detection signal is sent to the slave unit control section.

In this cordless telephone, however, when the call ends and the main body of the cordless handset is placed upright in the accommodating portion of the cordless handset, which is a normal set state, the charging terminals 12, 13 on the side of the base unit 1
The charging terminals 14 and 15 on the child device 22 side contact each other,
DC voltage is supplied from the charging circuit 11 of the parent device 1 to the rechargeable battery 18.

When the main body of the slave unit is inverted and placed horizontally in the storage unit of the slave unit, the positive and negative charging terminals 12, 13 on the side of the master unit 1 are arranged.
The charging terminals 14 and 15 on the slave unit 22 side contact with each other in positive and negative directions, but since the polarity of the diode bridge circuit 21 is reversed, a DC voltage is applied to both electrodes of the rechargeable battery 18,
The battery 18 can be charged.

[0008]

By the way, the cordless telephone of this type has an advantage that it can always be charged even when the main body of the cordless handset is placed upright or horizontally in the cordless handset housing portion. It is necessary to provide the diode bridge circuit 21 in order to supply the DC voltage to the rechargeable battery 18 even when the battery is horizontally placed by reversing.

Since the diode bridge circuit 21 is composed of a plurality of diodes, the number of parts increases and the electric circuit of the child device 22 becomes complicated, so that the number of manufacturing steps increases and the cost of manufacturing a cordless telephone. Was expensive.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a mobile communication device capable of charging a rechargeable battery even when the mobile device is set upside down on a stationary device.
An object of the present invention is to provide a charging device for a mobile communication device that can be simply configured without providing a polarity reversing circuit or the like.

[0011]

To achieve the above object, the present invention comprises a stationary machine having a charging circuit and a mobile machine which communicates by radio waves with the stationary machine as a power source. In a charging device for a mobile communication device, which supplies a charging voltage from the charging circuit to a rechargeable battery via each pair of positive and negative charging terminals that are in contact with each other when the mobile device is set at a predetermined position of the stationary device, The negative side charging terminal of the stationary machine or the mobile machine is used as the central common terminal, and auxiliary charging terminals are provided at equal intervals on the opposite side of the positive side charging terminal via this common terminal. It is characterized by being connected to the side charging terminal.

[0012]

In the charging device for the mobile communication device according to the present invention, the negative side charging terminal on the mobile device side is the common terminal in the center,
When auxiliary charging terminals are provided at equal intervals on the opposite side of the positive electrode charging terminal, when the normal set state of the mobile unit with respect to the stationary unit is set upright and the inverted state is set horizontally, both of the rechargeable battery Can be charged.

First, when the mobile unit is placed upright at a predetermined position of the stationary unit, the negative terminal charging terminal on the stationary unit side has a central common terminal on the mobile unit side, and the positive charging terminal has the positive side charging terminal on the mobile unit. The terminals come into contact with each other, and a charging voltage is supplied from the charging circuit of the stationary machine to the rechargeable battery of the mobile machine via these terminals.

When the mobile unit is inverted and placed horizontally on the stationary unit, the negative terminal charging terminal on the stationary unit contacts the common terminal of the mobile unit, and the positive charging terminal contacts the auxiliary charging terminal of the mobile unit. The charging voltage from the circuit is supplied to the rechargeable battery via an auxiliary charging terminal having the same polarity as the positive electrode charging terminal and a common terminal which is the negative electrode charging terminal.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a cordless telephone to which a charging device for a mobile communication device according to the present invention is applied, FIG.
FIG. 3 is an electrical block diagram of the cordless telephone set.

This cordless telephone is a popular type consisting of a master unit 1 which is a fixed device connected to a telephone line and a slave unit 2 which is a mobile unit connected to the master unit 1 by a wireless line. As shown in FIG. 1, the slave unit main body 6 is mounted on the main unit main body 3 to be charged.

The main body 3 has a recess 4 for accommodating the lower portion 6b of the main body 6 of the main body, which is placed on the upper surface 3a.
A pair of positive and negative charging terminals 12 and 13 are provided in an exposed state on the inner surface 4a of the slave unit housing portion 4. The electric circuit of the parent device 1 has the same basic configuration as the conventional example shown in FIG. 3, and is adapted to convert a commercial AC voltage into a DC voltage and supply it to the positive and negative charging terminals 12 and 13. There is. 5
Is an antenna that transmits and receives radio signals to and from the child device 2.

In the main unit 6 of the main unit 1, a pair of positive and negative charging terminals 14 and 15 are arranged on an edge 6c on the lower portion 6b side of the front face 6a facing the positive and negative charging terminals 12 and 13 of the main unit 1. Auxiliary charging terminals 16 are provided on the opposite side of the positive electrode charging terminal 14 with the negative electrode charging terminal 15 as the center at equal intervals. Reference numeral 7 denotes a key operation unit such as a numeric keypad arranged on the front surface 6a of the handset main body 6, and 8 denotes an antenna.

As a result, in the lower portion 6b of the main body 6 of the slave unit,
One of the charging terminals is provided with one negative electrode and two positive electrodes, and the child device main body 6 is placed upright (normally set state) or horizontally (reversely set state) in the child device housing portion 4. Even in such a case, the negative electrode charging terminal 15 and the positive electrode charging terminal 14 or the auxiliary charging terminal 16 come into contact with the pair of charging terminals 12 and 13 on the side of the base unit 1.

That is, when the slave unit body 6 is placed upright in the slave unit housing portion 4, the slave unit 2 is connected to the positive electrode charging terminal 12 on the master unit 1 side.
The positive electrode charging terminal 14 on the side contacts, and the negative electrode charging terminals 13 and 15 contact each other. Further, when the slave unit body 6 is placed horizontally along the master unit body 3, the positive charging terminal 12 on the master unit 1 side contacts the auxiliary charging terminal 16 on the slave unit 2 side, and the negative electrode charging terminals 13 and 15 are They will come into contact with each other.

Although the electric circuit on the side of the slave unit 1 has the same basic structure as that shown in FIG. 3, in the present example, the conventional diode bridge circuit 21 is omitted and the positive electrode charging terminal 14 and the auxiliary circuit are provided. It is configured to connect to the charging terminal 16. Then, a rechargeable battery 18 and a slave device network 19 are connected to a connection point between the both 14 and 16 via an on-cradle detection circuit 20 and a diode 17.

In this cordless telephone, however, when the telephone call is completed and the child machine main body 6 is placed in the child machine accommodation portion 4 in an upright state, the child machine 2 is attached to the positive and negative charging terminals 12 and 13 of the parent machine 1.
The positive and negative charging terminals 14 and 15 are brought into contact with each other, and a DC voltage is supplied from the charging circuit 11 of the parent device 1 to the rechargeable battery 18 of the child device 2 through these terminals 12 to 15.

When the slave unit body 6 is placed horizontally in the slave unit housing portion 4 of the master unit body 3, the slave unit body 6 is inverted (state shown by the phantom line in FIG. 1), Since the auxiliary charging terminal 16 of the cordless handset 2 contacts the positive charging terminals 12 and 13 of 1 and the negative charging terminals 13 and 15 also contact each other, the charging circuit 11 is recharged from the charging circuit 11 as in the case of standing upright. A DC voltage is supplied to the battery 18, and the battery 18 can be charged.

In the above cordless telephone,
Although the example of setting the slave unit body 6 in the slave unit housing portion 4 of the master unit body 3 has been described, the present invention is also applicable to a cordless telephone in which the master unit and the charger are separate bodies. In this case, the above-described power supply unit 10 and the charging circuit 11 are built in the charger side, and the main body of the charger is formed with a slave unit accommodating unit. Is the same as

Further, in these charging devices, the auxiliary charging terminal 16 is provided on the side of the slave unit 2, but the auxiliary charging terminal is provided on the side of the main unit 1 or the charger, and the auxiliary unit 2 is provided on the side of the slave unit 2. The same effect can be obtained even if only a pair of positive and negative charging terminals 14 and 15 are provided.

Further, in each of the above embodiments, the case of the cordless telephone has been described, but it can be widely applied to various mobile communication devices. For example, in a charging device configured to charge a rechargeable battery built in a portable small wireless device when the portable small wireless device is set at a predetermined position of the wireless device, a positive battery installed in each of the wireless device and the charger is installed. In addition to each pair of charging terminals of the negative electrode, the auxiliary charging terminal described above may be provided in any one of them, and the auxiliary charging terminal may be connected to the charging terminal on the positive electrode side.

As a result, even when the portable small radio is placed upright on the charger or inverted and placed horizontally, the central negative side charging terminal becomes a common contact terminal and the positive side charging terminal or auxiliary charging terminal becomes Since it contacts the charging terminal on the positive electrode side of the other party, the charging voltage can always be supplied from the charging circuit of the charger to the rechargeable battery of the portable wireless device.

[0028]

As described above, since the charging device for the mobile communication device according to the present invention is provided with the auxiliary charging terminal in addition to the pair of positive and negative charging terminals provided in the stationary device or the mobile device, Even if the mobile unit is placed in a normal set state with respect to the fixed unit, for example, it is placed upright or inverted and placed horizontally,
The auxiliary charging terminal is always in contact with the charging terminal on the positive electrode side, and the charging voltage can be supplied from the charging circuit of the stationary device to the rechargeable battery of the mobile device. Therefore, it is not necessary to provide an electric circuit or the like for matching polarities on the mobile unit side as in the conventional case, the circuit configuration on the mobile unit side is simplified, and the number of parts is reduced. It is easy and cheap.

[Brief description of drawings]

FIG. 1 is a perspective view showing a master unit main body and a slave unit main body of a cordless telephone according to an embodiment of the present invention.

FIG. 2 is an electrical block diagram showing a charging device of the cordless telephone.

FIG. 3 is an electrical block diagram showing a conventional charging device for a cordless telephone.

[Explanation of symbols]

 1 Stationary device 2 Mobile device 11 Charging circuit 12 Positive side charging terminal 13 Negative side charging terminal 14 Positive side charging terminal 15 Common terminal 16 Auxiliary charging terminal 18 Rechargeable battery

Claims (1)

[Claims] 1. A stationary machine having a charging circuit and a stationary machine which communicates by radio waves with a rechargeable battery as a power source. When the stationary machine is set at a predetermined position of the stationary machine. In a charging device for a mobile communication device that supplies a charging voltage from a charging circuit to a rechargeable battery through a pair of positive and negative charging terminals that are in contact with each other, a negative terminal charging terminal of the stationary device or the mobile device is common in the center. A mobile communication device characterized in that an auxiliary charging terminal is provided as a terminal on the opposite side of the positive charging terminal via the common terminal at equal intervals, and the auxiliary charging terminal is connected to the positive charging terminal. Charging device.