JP2002262451A - Power supply device, cable with connector used for the power supply device, and subsidiary device connected to the power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device which properly supplies power to an external device connected to the power supply device with no bother such as switching operation. SOLUTION: This power supply device has a connector 3 which freely connects or disconnects power input lines S1, S2 of power supply objects 11, 13 with power supply lines 6, 8 supplying power to the external device from a plurality of power supply parts A, B, and a selection connection means which, by selecting the one from the plurality of power supply part, connects the power supply part corresponding to the power supply object to the power supply line. The connector has, besides the connection terminals a1, a2 for the power supply lines, a connection terminal for selection signal generation which gives the selection connection means a selection signal which sets the selection connection means to select the power supply part corresponding to the power supply, following the power input line for the power supply object is connected. The selection connection means connects the particular power supply part from the plurality of the power supply parts according to the selection signal provided from the connection terminal for selection signal generation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device, a cable with a connector used for the power supply device, and a slave device connected to the power supply device.

[0002]

2. Description of the Related Art Heretofore, as a power supply device provided in various devices, or a power supply device used alone, a device provided with a plurality of power supply units capable of supplying power to the outside is well known.

As such a power supply device, for example, FIG.
As shown in FIG.
(For example, a + 12V power supply and a + 7V power supply) can be selectively switched to a state where power can be supplied to the outside from the DC power supply A or a state where power can be supplied from the DC power supply B.

[0004]

In a conventional power supply, as shown in FIG. 7, a power supply line 22 for outputting power supplied from a power supply 21 to the outside is connected to a connector 23. In the connector 23, the GND connection terminal 2
4, and the GND connection terminal 24 is connected to DC power supplies A and B as a common terminal. Further, the connector 23 is provided with a power supply terminal 25 separately from the GND connection terminal 24. A manually operable changeover switch 26 is connected to the power supply line 22 on the power supply device side connected to the power supply terminal 25, and a pair of terminals 26 a and 26 b of the changeover switch 26 are respectively connected to the power supply line 22.
The power supply line 27 of the DC power supply A and the power supply line 28 of the DC power supply B are connected.

When power is supplied from the power supply device 21 to one of the plurality of power supply target devices 29 and 31, a DC power supply connected to the power supply target device 29 and 31 is connected to the power supply device 21. The switch 26 is operated in advance so that power is supplied at the output of the power supply target device, and then the power input lines 30 of the desired power supply target devices 29 and 31 are connected to the connector 23 to thereby switch the power supply target device. 29,3
1 can be supplied with power from desired DC power supplies A and B.

However, in the prior art, the power supply units A and B must be switched one by one by manually operating the changeover switch 26, which is troublesome. There is a risk that power will not be supplied, that is, the power supply will be insufficient and the device will not operate, or the power supply will be excessive and the circuit or the like will be damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can appropriately supply power without troublesome switch operation or the like corresponding to an external device connected to a power supply device. The purpose is to.

[0008]

According to a first aspect of the present invention, there is provided a power supply device comprising: a plurality of power supply units capable of supplying power to the outside; a power supply line for supplying power from the plurality of power supply units to the outside; A connector for detachably connecting a power supply line and a power input line to be supplied with power, and a selective connection for selecting a power supply unit corresponding to the power supply target from the plurality of power supply units and connecting to the power supply line A power supply unit, wherein the power input line of the power supply target is connected to the connector, and the selection connection unit is configured to select a power supply unit corresponding to the power supply target. A selection signal generating means for generating a selection signal to be set, and inputting the selection signal to the selection connection means, and the selection connection means, based on a selection signal from the selection signal generation means,
A specific power supply unit is selected from the plurality of power supply units and connected to the power supply line.

According to the first aspect of the present invention, when the power input line to be supplied with power is connected to the connector of the power supply device, the selection signal generating means of the power supply device receives a signal from the specific power supply unit. A selection signal for setting the selection connection means so that power can be supplied to the outside is generated, and when the selection signal is input to the selection connection means, the selection connection means is connected to the power supply corresponding to the power supply target from the plurality of power supply units. Since the power supply unit is selected, appropriate power is supplied from the power supply unit to the power supply target through the connector, and the power supply is performed by simply connecting the power input line of the power supply target to the connector of the power supply device. Power supply suitable for the target is automatically performed.

[0010] According to a second aspect of the present invention, in the power supply unit according to the first aspect, the selection signal generating means is configured to connect the power input line to be supplied with the power to the connector. Accordingly, the selection signal is generated through a specific connection terminal of the connector.

According to the second aspect of the present invention, when the power input line to be supplied with power is connected to the connector,
In the selection signal generation means, a selection signal is generated through a specific connection terminal provided in the connector, and the selection signal is input to the selection connection means, and a power supply unit corresponding to a power supply target is selected, and the power supply The power is supplied from the unit to the power supply target.

According to a third aspect of the present invention, in the power supply device according to the second aspect, the selection signal generation means includes a power supply for applying a DC voltage to a selection signal input line in the selection connection means. The DC voltage from the power source applied to the selection signal input line is applied to the specific connection terminal in accordance with the power supply target as the power input line to be supplied with power is connected to the connector. And a selection signal that becomes a low potential by being dropped to the ground via, and a selection signal that becomes a high potential by not dropping the DC voltage of the specific power supply to the ground. It is characterized by.

According to the third aspect of the present invention, as the power input line to be supplied with power is connected to the connector, the power is input to the selection connection means through the selection signal input line corresponding to the power supply target. When one of the selection signal having a low potential and the selection signal having a high potential is generated, and the generated selection signal is input to the selection connection means,
Power is supplied from an appropriate power supply unit corresponding to the power supply target.

A cable with a connector according to a fourth aspect of the present invention is a cable with a connector for connecting the connector of the power supply device according to any one of the second to third aspects and the power supply target. A cable-side connector connected to the connector of the power supply device, a connection portion connected to the power supply target, a power transmission line connected to the power supply line, and a power supply line connected to the specific connection terminal; A cable-side specific connection terminal of the cable-side connector that contributes to generation of the selection signal corresponding to an object.

According to the cable with the connector according to the fourth aspect, the specific connection is performed by simply connecting the cable with the connector to the power supply target and to the connector for supplying the power of the power supply device to the outside. When the cable-side specific connection terminal is connected to the terminal, the selection signal generated by the selection signal generation means through the specific connection terminal is determined and generated, and the selection signal is generated by the selection connection means of the power supply device. When the power is supplied to the power supply target, the connection is switched to a state in which power can be supplied from a specific power supply unit that matches the power supply target. In this way, an appropriate power supply is provided.

According to a fifth aspect of the present invention, there is provided a subordinate device of the power supply unit, which is connected to the power supply unit according to the first aspect, and is detachably attached to the power supply target and a connector of the power supply unit. And a power input side connector connected to the power input side connector, and the power input side connector is connected to the specific connection terminal and contributes to the generation of the selection signal corresponding to the power supply target. It is characterized by having a specific connection terminal.

According to the fifth aspect of the present invention, the operation of simply connecting the accessory device to the power supply device connector so as to be able to supply power allows the selection signal generation means via the slave device specific connection terminal and the specific connection terminal. Since the generated selection signal automatically selects the power supply unit corresponding to the attached device as the selection connection means and supplies power to the attached device from the power supply unit, the proper power supply to the attached device is performed. Become so.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is an explanatory view showing a power supply unit, FIG. 2 is an explanatory view showing two types of cables with connectors connected to connectors of the power supply unit in FIG. 1, and FIG.
FIG. 4 is a schematic explanatory view showing a state in which the cable with a connector of FIG. 2 is connected to the power supply apparatus of FIG. 1, and FIG. 4 is a view showing a state in which another power supply target apparatus is connected to the power supply apparatus of FIG. FIG.

Power supply 1 according to one embodiment of the present invention
Is not used alone as a power supply device, but is provided, for example, in a device such as a video device or an audio device, specifically, in a camera recorder 2 which is an image capturing and recording device.
However, a single device that functions only as a power supply device may be used.

The power supply device 1 includes at least two types of power supply units: a +12 V DC power supply A and a +7 V DC power supply B, and these DC power supplies A and B
Can supply power to the outside.

The external case of the camera recorder 2 provided with the power supply device 1 is provided with a connector 3 for connecting another slave device different from the device to the camera recorder 2 when supplying power to the outside. ing. And the connector 3
Is provided with four terminals a1, a2, a3, a4, and the four terminals a1, a2, a3, a4.
Among them, a4 is set as a GND terminal, and the ground wire 5 is connected. The power supply line 6 from the DC power supply A is connected to the terminal a1 via the selective connection means 7. The power supply line 8 from the DC power supply B is connected to the terminal a2.
Are connected via the selection connection means 7. A selection signal input line 9 for inputting a selection signal described later to the selection connection means 7 is connected to the terminal a3. Here, the terminal of a3 constitutes a specific connection terminal.

The selection connection means 7 is constituted by a semiconductor switching element such as a transistor, for example, and selects a power supply line 6 from the DC power supply A and a power supply line 8 from the DC power supply B. The power supply is selectively selected so that power is supplied to the connector 3 from only one of the power supply lines 6 and 8. The selection is switched by a selection signal input from the selection signal input line 9.

Further, the power supply device 1 is provided with a selection signal generating means 18 for generating this selection signal.
The selection signal generating means 18 supplies a voltage from a +5 V DC power supply (not shown) provided separately from the DC power supplies A and B to the power supply line 12 and the pull-up resistor R.
And the selection signal input line 9 is connected to the selection signal input terminal of the selection connection means 7 and the specific connection terminal a3. It is composed of

For the connector 3, a device 11 and a device 13 to be supplied with power from the power supply 1
Are connected via cables 10A and 10B with connectors, respectively. In addition, the device 11
This is a hard disk recorder, which is attached to the camera recorder 2 for backup of video recording in the camera recorder 2 and used. The device 13 is a hard disk recorder having a specification different from that of the device 11.

The cable with connector 10A has a connector 19 which can be detachably connected to the connector 3, and this connector 19 is detachably connected to the terminals a1, a2, a3, a4 of the connector 3, respectively. Terminals b1, b2, b3, and b4 that can be joined are provided. Cables S1 and G1 as power transmission lines are connected to the terminals b1 and b4, respectively, and no transmission lines are connected to the terminals b2 and b3. At the other end of the cables S1 and G1 as power transmission lines, a connector 21 is provided as a connecting portion for detachably connecting to the connector 20 of the device 11. The cable S
1, G1 indicates that the cable with connector 10A is the device 1
1 is a power input line for inputting power to the device 11.

On the other hand, the cable with connector 10B has a connector 22 which can be detachably connected to the connector 3, and this connector 22 is detachably connected to the terminals a1, a2, a3, a4 of the connector 3, respectively. Terminals c1, c2, c3, and c4 that can be freely joined are provided. Cables S2 and G2 as power transmission lines are respectively connected to the terminals c2 and c4, and no transmission lines are connected to the terminal c1. Further, one end of a connection line G3 for short-circuiting with the terminal c4 is connected to the terminal c3, and the other end of the connection line G3 is connected to the terminal c4 or the cable G2 (see FIGS. 2 and 2). 3 shows only the connection line G3 connected to the cable G2, but the connection line G3 may be provided so as to connect the terminals c3 and c4). The connector 23 of the device 13 is connected to the other end of each of the cables S2 and G2 as the power transmission line.
2 as a connection part for detachably connecting to
4 are provided. The cables S2 and G2 are power input lines for inputting power to the device 13 when the cable with connector 10B is connected to the device 13.

The selection signal is generated by the selection signal generation means 18 by connecting a cable 10A with a connector or a cable 10B with a connector as shown in FIG. That is, as described above, the selection signal input line 9 is previously connected to the power supply line 12.
+5 V DC voltage is applied to the connector 19 of the cable with connector 10A when the connector 19 is connected to the connector 3, and the terminals b3 and b4 of the cable with connector 10A connected to the terminals a3 and a4 are open. Therefore, what is inputted to the selection connection means 7 through the selection signal input line 9 is a high-potential DC voltage signal of +5 V, and the DC power supply A
In a closed state in which the power supply line 6 is connected to the terminal a1,
On the other hand, switching to make the power supply line 8 of the DC power supply B open from the connection with the terminal a2 is released in the selective connection means 7. Thereby, the device 1 as a power supply target to which the cable with connector 10A is connected
1 is connected to a +12 V DC power supply through terminals a1 and b1 and cables S1 and G1 (FIG. 3).
(A)). Here, coupling the connector 19 of the cable with connector 10A to the connector 3 determines the generation of the selection signal as described above.

A cable 10 with a connector connected to a device 13 different from the device 11 as a power supply target.
B, when the connector 22 is connected to the connector 3, the terminals a3, a
4 is short-circuited between the terminals c3 and c4, respectively, so that the voltage from the power supply line 12 falls to the ground via the pull-up resistor R. Input to 7 is almost 0V
And a closed state in which the power supply line 8 of the DC power supply B is connected to the terminal a2 on the basis of the signal input, while the power supply line 6 of the DC power supply A is connected to the terminal a1. Is switched to an open state in which is released. As a result, the device 13 as the power supply target to which the cable with connector 10B is connected receives + 7V through the terminals a2 and b2 and the cables S2 and G2.
A DC power supply is connected (see FIGS. 3B and 4).

Therefore, simply by connecting the connector-attached cable 10A connected to the device 11 to the connector 3 of the power supply device 1, power is supplied from the DC power supply A suitable for the device 11, and the device 11 Replacement device 1
Just by connecting the cable with connector 10B connected to the power supply 3 to the connector 3 of the power supply device 1, the power is supplied from the DC power supply B suitable for the device 13.

Here, the cable with connector 10A, 1
The terminals b3 and c3 of the connectors 19 and 22 of 0B are cable-side specific connection terminals connected to the specific connection terminal a3 of the connector 3.

The cables with connectors 10A, 10A
B may be detachable from the devices 11 and 13 by detaching via a connector. The cable with a connector according to the present invention has, at both ends, a connecting portion capable of connecting to the power supply device via the connector, Also provided is a device provided with a connection portion that can be connected to a device to be supplied via a connector.

(Embodiment 2) FIG. 5 is a diagram schematically showing a state in which a camera recorder 2 as a power supply device 1 is connected to a hard disk recorder 14 as a subordinate device which is detachably attached to the camera recorder 2. FIG. 6 and FIG.
FIG. 4 is an explanatory diagram schematically showing a state in which a hard disk recorder of another specification as another slave device is connected to the camera recorder.

As shown in FIGS. 5 and 6, a hard disk recorder 14 is detachable via connectors 3 and 15 from a camera recorder 2 equipped with a power supply unit 1 having a plurality of power supply units capable of supplying electric power to the outside. It is composed. Also, another hard disk recorder 16 is connected to connectors 3 and 1
It is configured so that it can be detached and attached via a connector 7.

Since the power supply 1 has the same configuration as the power supply 1 of the first embodiment, the detailed description is omitted, and the same components are denoted by the same reference numerals. ing.

The hard disk recorder 14 is provided, for example, as an option with respect to the camera recorder 2. When the connector 15 provided on the outer case of the hard disk recorder 14 is connected to the connector 3 provided on the outer case of the camera recorder 2, Power is supplied from a DC power supply A suitable for the hard disk recorder 14 via the connectors 3 and 15. That is, when the connector 15 is connected to the connector 3, since the terminals d3 and d4 of the connector 15 are open, the input to the selection connection means 7 through the selection signal input line 9 is a high potential DC of + 5V. The power supply line 6 of the DC power supply A is closed based on the signal input, and the power supply line 8 of the DC power supply B is disconnected from the terminal a2. Switching to a state is performed. Thus, the hard disk recorder 14 supplied with power from the power supply device 1 through the connectors 3 and 15 is connected to a +12 V DC power supply through the terminals a1 and d1, and is supplied with power to the circuit 31 and the like through the power input line 30. become.

On the other hand, when the connector 17 provided on the external case of another hard disk recorder 16 is connected to the connector 3 of the camera recorder 2 instead of the hard disk recorder 14, the DC power supply B adapted to the other hard disk recorder 16 Power is supplied via the terminals 3 and 17. That is, when the connector 17 is connected to the connector 3, the terminals e3 and e4 of the connector 17
Since the voltage is short-circuited, the voltage from the power supply line 12 falls to the ground via the pull-up resistor R, so that the input to the selection connection means 7 through the selection signal input line 9 is a low potential of almost 0V. It becomes a DC voltage signal, and based on the signal input, the power supply line 8 of the DC power supply B is closed to be connected to the terminal a2, while the power supply line 6 of the DC power supply A is
Is switched to the open state in which the connection with the terminal a1 is released. As a result, the other hard disk recorder 16 supplied with power from the power supply device 1 via the connectors 3 and 17 is connected to a +7 V DC power supply through the terminals a2 and b2, and supplies power to the circuit 32 and the like through the power input line 30. Will be done.

Here, the connectors 15 and 17 are connectors on the power input side and terminals d3 and
The terminal e3 of the connector 17 is a slave-device-specific connection terminal connected to the specific connection terminal a3 of the connector 3.

In each of the above embodiments, the power supply voltage that can be supplied to the outside is shown by specific numerical values of +7 V and +12 V. However, the present invention is not limited to these, and the present invention is not limited thereto. The present invention is included in the present invention as long as a plurality of power supplies have a plurality of power supply units for supplying power to the outside. In the above-described embodiment, the specific value of +5 V is also shown as the voltage of the drive power supply for selecting the power supply unit. However, the present invention is not limited to this value, and can be adopted as appropriate.

In each of the above-described embodiments, an example in which power can be externally supplied from two power supply units is described. However, three or more power supply units may be used.

In each of the above embodiments, the power supply unit is provided with a plurality of power supply units having different power supply capabilities.
A plurality of power supply units having the same power supply capability, in which power supply to the outside is performed from only one power supply unit and a plurality of power supply units are combined to supply power to the outside. The present invention can be applied to a power supply device capable of selecting a type.

In the above embodiment, only a DC power supply is shown as a power supply unit, but an AC power supply may be included as a power supply unit.

In the above embodiment, the switching circuit is formed by using a semiconductor switching element such as a transistor as the selective connection means. However, the switching circuit may be formed by using a relay or the like.

In the above-described embodiment, the case where only the connector supplies power to the device to be supplied with power (including the subordinate device) has been described. However, not only power supply but also transmission of data and the like can be performed to the same connector. You may do it. With such a configuration, there is an advantage that a separate connector for data transmission is not required, and connection labor can be reduced.

[0045]

According to the power supply apparatus of the present invention, the power input line to be supplied with power is connected to the connector of the power supply apparatus. A selection signal is generated, and when the selection signal is input to the selection connection unit, the selection connection unit selects the power supply unit corresponding to the power supply target from the plurality of power supply units. The power supply suitable for the target is performed, so that the power supply can be appropriately performed without the trouble of switching the power supply by manual switch operation and the trouble of forgetting to switch, as in the related art.

According to the connector-equipped cable of the present invention, the power supply unit is connected to the power supply unit only by connecting the power supply unit to the desired power supply target so that the power supply unit can supply power suitable for the power supply target. The power supply target can be automatically connected to the power supply target, and appropriate power supply is performed to the power supply target through the cable. It is possible to supply an appropriate power without any trouble such as the above.

According to the slave device of the present invention, an appropriate power supply suitable for the slave device can be performed by a simple operation of simply connecting the slave device to the power supply device so as to be able to supply power. As in the related art, an appropriate power supply can be performed without troublesome switching of the power supply by a manual switch operation or trouble such as forgetting to switch.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a power supply device.

FIG. 2 is an explanatory view showing two types of cables with connectors connected to the connectors of the power supply device of FIG. 1;

FIG. 3 is an explanatory diagram showing a state in which the cable with a connector of FIG. 2 is connected to the power supply device of FIG. 1;

4 is an explanatory diagram showing a state in which another power supply target device is connected to the power supply device of FIG. 1 by a cable with a connector.

FIG. 5 is an explanatory diagram schematically showing a state where a slave device is connected to a power supply device.

FIG. 6 is an explanatory view schematically showing a state in which another subordinate device is connected to the power supply device.

FIG. 7 is an explanatory diagram showing a state in which a power supply target device is connected to a conventional power supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply device 3 Connector 6, 8 Power supply line 7 Selection connection means 10A, 10B Cable with connector 11, 13 Power supply target 14, 16 Dependent device 18 Selection signal generation means A, B Power supply unit a1 to a4 Connection terminal 30, S1 , S2 power input line

Claims (5)

[Claims] 1. A plurality of power supply units capable of supplying power to the outside, a power supply line for supplying power from the plurality of power supply units to the outside, and a power input line to be supplied with power, which can be freely connected and disconnected. A power supply unit that selects a power supply unit corresponding to the power supply target from the plurality of power supply units and connects the power supply unit to the power supply line. Along with the power input line being connected to the connector, generating a selection signal for setting the selection connection means to select a power supply corresponding to the power supply target, and connecting the selection signal to the selection connection Selecting means for inputting to the means, the selecting and connecting means selecting a specific power supply from the plurality of power supplies based on a selection signal from the selection signal generating means, and Connect to wire Power apparatus according to claim Rukoto. 2. The power supply device according to claim 1, wherein the selection signal generating unit is configured to connect the power input line to be supplied with the power to the connector via a specific connection terminal of the connector. A power supply device configured to generate the selection signal. 3. The power supply device according to claim 2, wherein the selection signal generation unit includes a power supply that applies a DC voltage to a selection signal input line of the selection connection unit, and the power supply target to the connector. As the power input line is connected, corresponding to the power supply target, the DC voltage from the power supply applied to the selection signal input line is dropped to the ground through the specific connection terminal, thereby lowering the potential of the power supply. And a selection signal that becomes a high potential by not dropping the DC voltage of the specific power supply to the ground. 4. A cable with a connector for connecting the connector of the power supply device according to claim 2 and the power supply target, the cable being connected to the connector of the power supply device. A connector, a connection portion connected to the power supply target, a power transmission line connected to the power supply line, and joined to the specific connection terminal to contribute to generation of the selection signal corresponding to the power supply target And a cable-side specific connection terminal of the cable-side connector. 5. A slave device connected to the power supply device according to claim 1, comprising: a power supply target; and a power input side connector detachably connected to a connector of the power supply device. The power input side connector further comprises a slave device side specific connection terminal which is joined to the specific connection terminal and contributes to generation of the selection signal corresponding to the power supply target. apparatus.