JP2007267127A - Power line adapter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further miniaturize a power line adapter device as a whole by stabilizing communication quality by preventing power of a power line from being reduced even when a non-communicating electronic apparatus is mixed and connected. <P>SOLUTION: The present invention relates to a power line adapter device 1 connected among an outlet jack of a power line transmitting a signal current of power line communication, an electronic apparatus 2 and a power line communication apparatus 3, comprising: an adapter-side outlet plug 4 connectable to the outlet jack of the power line and a plurality of adapter-side outlet jacks 6 which are connected in parallel and to which an outlet plug 5 of the electronic apparatus 2 or the power line communication apparatus 3 is connectable, wherein the plurality of adapter-side outlet jacks 6 are divided into an outlet portion 8 for power line communication apparatus directly connected to the adapter-side outlet plug 4 and an outlet portion 10 for electronic apparatus connected to the adapter-side outlet plug 4 via an impedance increasing part 9 which increases impedance for the signal current. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power line adapter device suitable for maintaining good data communication of a power line communication device when an electronic device and a power line communication device are connected to a power line outlet jack with a single table tap.

  In recent years, it has been studied to perform data communication between power line communication devices via a power line wired in a building such as a house. For example, it has been studied to satisfactorily perform data communication such as an audio signal and a video signal between power line communication apparatuses such as audio devices using a power line of a house.

  When performing power line communication in a house or the like, it is assumed that various electronic devices that do not perform power line communication such as home appliances are connected to the power line outlet jack in addition to the power line communication device. At this time, if an electronic device such as a home appliance is connected to a power line outlet jack, the power line communication of the power line communication apparatus connected to another outlet jack due to the connection of these electronic devices has various effects. There is a case.

  For example, when an electronic device is connected to a power line outlet jack, noise and open / close surges may be generated and directly superimposed on the power line, which may cause distortion in the power line communication signal. For this reason, conventionally, Patent Document 1 proposes a connection outlet for a carrier communication circuit in which a high impedance circuit that prevents noise and switching surges from entering a power line is provided in a power line outlet jack.

  In addition, when a power line communication device is connected to an outlet jack of a power line in parallel with an electronic device such as a home appliance, the impedance of the electronic device such as a home appliance is low, so the impedance of the line becomes low and is output to the power line. There was an inconvenience that the power to be lowered. In particular, a charging adapter for a mobile phone having a capacitor built in the vicinity of the outlet has a low impedance, so that the power reduction is significant when connected in parallel. When the power is reduced as described above, the reception quality is deteriorated at the same time, and the power consumption is increased to maintain the power. For this reason, conventionally, Patent Document 2 proposes a power line communication stabilization device that includes an outlet unit connected to a power line via a low-pass filter as a frequency selection unit, and reduces the effects of impedance loss and noise due to the connection of electronic equipment. Has been.

Japanese Patent Application Laid-Open No. 61-278221 JP 2005-65006 A

The following problems remain in the conventional technology.
In the connection outlet described in Patent Document 1, the power line outlet jack itself is provided with a high impedance circuit. However, the outlet needs to be built in the outlet jack in advance, and is applicable to a general outlet jack. There was an inconvenience that modification was necessary and the degree of freedom of installation was low. In addition, this connection outlet is equipped with a high-impedance circuit using a common mode choke coil to prevent noise and open / close surges from entering. It was not possible to obtain a sufficient effect with respect to the decrease in.
Moreover, since the power line communication stabilizing device described in Patent Document 2 is a table tap type having a plurality of outlets, it is not necessary to modify the power line outlet jack itself, but one power line communication stabilizing device. In addition, the power line communication device and the non-communication electronic device cannot be mixed and connected in parallel. Furthermore, a blocking filter having a large current capacity is required to cope with a large capacity home appliance, but there is a problem that the blocking filter becomes large as the capacity increases and the entire apparatus becomes large.

  The present invention has been made in view of the above-described problems, and even if electronic devices that do not perform power line communication are connected together, the power quality of the power line line is prevented and the communication quality is stabilized. It aims at providing the power line adapter apparatus which can be reduced in size.

  The present invention employs the following configuration in order to solve the above problems. That is, the power line adapter device of the present invention is a power line adapter device connected between an electronic device that does not perform power line communication and a power line communication device that performs power line communication and a power line outlet jack that transmits a signal current of power line communication. An adapter-side outlet plug that can be connected to the outlet jack of the power line, and a plurality of adapter-side outlet jacks that are connected in parallel and connectable to the outlet plug of the electronic device or the power line communication device. An electronic device in which a side outlet jack is connected to the adapter side outlet plug via a power line communication device outlet portion directly connected to the adapter side outlet plug and a high impedance increasing portion that increases impedance with respect to the signal current Divided into outlet section for And said that you are.

In this power line adapter device, a plurality of adapter-side outlet jacks are connected to the adapter-side outlet plug directly through the adapter-side outlet plug, and the adapter-side outlet plug is connected to a high-impedance portion that increases the impedance against signal current. Therefore, even if the power line communication device and the electronic device are mixed and connected, it is possible to prevent a reduction in power on the line. That is, since the outlet portion for electronic equipment is connected via the high impedance portion having high impedance with respect to the signal current (differential mode), when the electronic equipment such as the charging adapter of the mobile phone is connected, the electronic equipment By connecting the electronic device to the power outlet, the impedance of the line of the power line can be increased to prevent a reduction in the power of the line.
In addition, because it is not built in the power line outlet and is independent as an adapter device, the above-mentioned electronic equipment and the power line communication device can be mixedly connected to any outlet regardless of the mounting outlet. A degree of freedom can be obtained.
Furthermore, the electronic device connected to the outlet portion for electronic equipment is current-limited by the capacity of the high impedance portion, but the electronic device with a larger current capacity is connected to the outlet portion for the power line communication device that does not go through the high impedance portion. Since connection is possible, it is not necessary to provide an unnecessarily large-capacity high-impedance section by distributing the outlet sections to be connected according to the current capacity, and the entire apparatus can be downsized.

  In the power line adapter device of the present invention, the adapter-side outlet plug has a pair of plug terminals connectable to the outlet jack of the power line, and the adapter-side outlet jack has a pair of adapters in the pair of plug terminals. It has a pair of jack terminals connected through wiring, and the high impedance portion includes a balanced line choke coil and a capacitor connected in parallel to each other between the pair of adapter wirings. To do. That is, in this power line adapter device, since the high impedance portion includes the balanced line choke coil and the capacitor, the maximum impedance is obtained when the pair of adapter wires are in reverse phase with each other, and the line current is effectively reduced with respect to the signal current. High impedance can be achieved.

  Further, the power line adapter device of the present invention can change the number of the adapter-side outlet jacks in the power line communication device outlet portion and the electronic device outlet portion by changing the position where the high impedance portion is connected. A jack number changing mechanism is provided. That is, in this power line adapter device, the connection number of the high impedance unit is changed by the jack number changing mechanism to change the number of adapter side outlet jacks in the power line communication device outlet unit and the electronic device outlet unit. Thus, it is possible to arbitrarily change the ratio of the number of outlet jacks that can be connected within the range of the number of all outlet jacks on the adapter side. Therefore, the limitation on the number of connectable power lines can be relaxed according to the number of power line communication devices and electronic devices to be connected.

  In the power line adapter device of the present invention, it is preferable that the high impedance portion is connected to the adapter-side outlet plug via a fuse. That is, in the power line adapter device, since the high impedance portion is connected to the adapter-side outlet plug via the fuse, the high impedance portion can be protected against overcurrent or the like.

  Further, the power line adapter device of the present invention includes a housing in which a plurality of the adapter-side outlet jacks are fixed, and the housing is adapted to distinguish between the power line communication device outlet portion and the electronic device outlet portion. It is preferable that a device display and a maximum output current display indicating the current capacity that the high impedance unit can function are provided. That is, in this power line adapter device, the adaptive device display and the maximum output current display are provided on the housing, so that the power line communication device outlet unit and the electronic device outlet unit can be easily distinguished and have high impedance. It is possible to easily recognize the maximum output current (current capacity) that can effectively obtain the effect of the control unit.

The present invention has the following effects.
That is, according to the power line adapter device of the present invention, the plurality of adapter-side outlet jacks are divided into the power line communication device outlet unit and the electronic device outlet unit connected via the high impedance unit. Therefore, even if the power line communication device and the non-communication electronic device are connected in a mixed manner, it is possible to prevent a reduction in power on the line. In addition, by distributing the outlet section to be connected according to the current capacity of the electronic device, it is not necessary to provide an unnecessarily large-capacity high-impedance section, and the entire apparatus can be downsized. Therefore, if an electronic device is connected to the power line adapter device of the present invention in accordance with the current capacity, power loss caused by a decrease in line impedance can be suppressed, power consumption can be suppressed, and stable communication quality and longness can be achieved. Communication distance can be obtained.

  Hereinafter, a first embodiment of a power line adapter device according to the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 to 3, the power line adapter device 1 of the present embodiment is connected between a power line outlet jack (not shown) that transmits a signal current of power line communication and the electronic device 2 and the power line communication device 3. The adapter is a so-called table tap to which a plurality of electronic devices 2 and the power line communication device 3 can be connected. The power line adapter device 1 includes an adapter-side outlet plug 4 that can be connected to an outlet jack of a power line, and a plurality of adapter-side outlet jacks 6 that can be connected in parallel to an outlet plug 5 of an electronic device 2 or a power line communication device 3. And a housing 7 in which a plurality of adapter-side outlet jacks 6 are arranged and fixed in series. In addition, in the power line adapter device 1 of this embodiment, the four adapter side outlet jacks 6 are mounted.

  The plurality of adapter-side outlet jacks 6 are connected to the adapter-side outlet plug 4 via a power line communication device outlet portion 8 directly connected to the adapter-side outlet plug 4 and a high-impedance portion 9 that increases the impedance with respect to the signal current. It is divided into the outlet part 10 for electronic devices connected to the. In other words, the power line communication device outlet unit 8 including two adapter side outlet plugs 4 and the electronic device outlet unit 10 including two adapter side outlet plugs 4 are divided.

The power line is, for example, disposed in a general house and supplies power to the plurality of electronic devices 2 and the power line communication device 3 and also serves as a data communication medium for signal current transmitted between the power line communication devices 3.
The power line communication device 3 is an audio data transmission device such as a CD player, for example, which transmits audio data via a power line, or audio data transmitted from a power line communication device that is an audio data transmission device. A playback speaker device that receives and plays back via the device. The power line communication device 3 also has an outlet plug 5 that can be connected to a power line outlet jack or an adapter-side outlet jack 6.

  The electronic device 2 is, for example, a charging adapter for a mobile phone, and is a device that is not related to data communication via a power line, and simply receives power from a power line jack. In addition, the electronic device 2 has an outlet plug 5 that can be connected to an outlet jack of a power line.

The adapter-side outlet plug 4 has a pair of plug terminals 4 a that can be connected to a power line outlet jack, and the adapter-side outlet jack 6 is connected to the pair of plug terminals 4 a via a pair of adapter wires 11. A pair of jack terminals 6a is provided.
Further, as shown in FIGS. 2 and 3, the high impedance unit 9 includes a balanced line choke coil 12 and a capacitor 13 connected in parallel with each other between a pair of adapter wires 11.

  The balanced wire choke coil 12 is connected to a pair of adapter wires 11 and provided with a pair of balanced wire winding portions 12b wound around a common annular core 12a in opposite directions. That is, the winding direction of the balanced wire choke coil 12 is set so that a high impedance can be obtained with respect to the signal current (differential mode).

  Further, the casing 7 shows an adaptive device display 14 capable of identifying the power line communication device outlet 8 and the electronic device outlet 10 on the surface thereof, and a current capacity at which the high impedance increasing portion 9 can function. A maximum output current display 15 is provided. The adaptive device display 14 is printed on the power line communication device outlet unit 8 with “<PLC>” meaning power line communication, and the maximum output current display 15 is displayed on the power line communication device outlet unit 8. “10A” is printed and “1A” is printed on the outlet 10 for electronic equipment.

  As described above, in this embodiment, the plurality of adapter-side outlet jacks 6 include the power line communication device outlet portion 8 directly connected to the adapter-side outlet plug 4 and the high impedance increasing portion 9 that increases the impedance with respect to the signal current. Since the power line communication device 3 and the electronic device 2 are connected in a mixed manner, it is possible to prevent a decrease in power on the line. it can.

  That is, since the electronic device outlet unit 10 is connected via the high impedance unit 9 having a high impedance with respect to the signal current (differential mode), the electronic device 2 such as the charging adapter of the mobile phone is connected. By connecting the electronic device 2 to the outlet portion 10 for electronic devices, it is possible to increase the impedance of the line of the power line and prevent the power of the line from being lowered.

Moreover, since it is not built in the power line outlet and is made independent as an adapter device, the electronic device 2 and the power line communication device 3 can be mixedly connected to any outlet regardless of the mounting outlet. Installation flexibility can be obtained.
Further, the electronic device 2 connected to the electronic device outlet unit 10 is current-limited by the capacity of the high impedance unit 9, but an electronic device having a larger current capacity is not connected to the high impedance unit 9. Since it is possible to connect to the power outlet unit 8, it is not necessary to provide an unnecessarily large-capacity high-impedance unit 9 by allocating the outlet unit to be connected according to the current capacity, thereby reducing the size of the entire apparatus. Is possible.

Further, since the high impedance unit 9 includes the balanced line choke coil 12 and the capacitor 13, the maximum impedance is obtained when the pair of adapter wirings 11 are in opposite phases to each other, and the high impedance of the line is effectively prevented with respect to the signal current. Can be achieved.
Since the adaptive device display 14 and the maximum output current display 15 are provided, the power line communication device outlet unit 8 and the electronic device outlet unit 10 can be easily identified, and the effect of the high impedance unit 9 is achieved. The maximum output current (current capacity) that can be effectively obtained can be easily recognized.

  Next, 2nd Embodiment and 3rd Embodiment of the power line adapter apparatus which concern on this invention are described, referring FIG.4 and FIG.5. In the following embodiments, the same constituent elements described in the above embodiments are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 4, the power line adapter device 21 of the second embodiment is different from the first embodiment in that the high impedance portion 9 is connected to the adapter-side outlet plug 4 via the fuse 22. . That is, in the second embodiment, a replaceable fuse 22 is connected between the power line communication device outlet section 8 and the high impedance section 9 in one of the pair of adapter wires 11.
Therefore, in the power line adapter device 21 of the second embodiment, since the high impedance increasing unit 9 is connected to the adapter-side outlet plug 4 via the fuse 22, the high impedance increasing unit 9 is protected against overcurrent or the like. be able to.

  The difference between the third embodiment and the first embodiment is that, in the first embodiment, the number of adapter-side outlet jacks 6 between the power line communication device outlet section 8 and the electronic apparatus outlet section 10 is fixed. On the other hand, in the power line adapter device 31 of the third embodiment, as shown in FIG. 5, the position where the high impedance unit 9 is connected is changed, and the power line communication device outlet unit 8 and the electronic device outlet unit 10 are changed. This is that a jack number changing mechanism 32 capable of changing the number of adapter-side outlet jacks 6 is provided.

  The jack number changing mechanism 32 includes a pair of first connection wires 33 branched from the balanced line choke coil 12 side end of the high impedance portion 9 connected to the pair of adapter wires 11, and the high impedance portion 9. A pair of second connection wirings 34 extending from the end portion on the capacitor 13 side, a pair of insulating non-conductive guides 35 extending in parallel with each other, and a connection between the pair of non-conductive guides 35 are fixed. Six adapter-side outlet jacks 6 and a pair of long first conductive plates 36 and a pair of second conductive plates 37 slidably attached to a pair of non-conductive guides 35 are provided.

The first conductive plate 36 and the second conductive plate 37 are attached to the non-conductive guide 35 in a state of being spaced apart from each other in the extending direction, and are slidable in synchronization with each other.
The pair of first connection wirings 33 are connected to the pair of first conductive plates 36, respectively, and the pair of second connection wirings 34 are connected to the pair of second conductive plates 37, respectively.
A pair of connection support portions 38 that are electrically connected to the pair of jack terminals 6 a are provided between the adapter-side outlet jack 6 and the non-conductive guide 35. These connection support portions 38 are electrically connectable to the first conductive plate 36 or the second conductive plate 37 at positions facing each other.

  That is, in the power line adapter device 31, the first conductive plate 36 and the second conductive plate 37 are electrically connected to the first conductive plate 36 through the connection support portion 38 by sliding on the non-conductive guide 35. The ratio of the number of adapter-side outlet jacks 6 to be connected to the number of adapter-side outlet jacks 6 electrically connected to the second conductive plate 37 can be changed. Therefore, the number of adapter-side outlet jacks 6 in the power line communication device outlet section 8 and the electronic apparatus outlet section 10 can be changed by sliding the first conductive plate 36 and the second conductive plate 37.

  As described above, in the third embodiment, the jack number changing mechanism 32 changes the connection position of the high impedance unit 9 so that the adapter side outlet jacks in the power line communication device outlet unit 8 and the electronic device outlet unit 10 are mutually connected. By changing the number of 6, it is possible to arbitrarily select and change the proportion of the number of outlet jacks that can be connected within the range of the total number of outlet jacks on the adapter side. Therefore, the limitation on the number of connectable power lines can be relaxed according to the number of power line communication devices 3 and electronic devices 2 to be connected.

The technical scope of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the power line adapter device 31 of the third embodiment, a mechanism for sliding the first conductive plate 36 and the second conductive plate 37 on the non-conductive guide 35 as the jack number changing mechanism 32 is employed. As long as the number of the adapter-side outlet jacks 6 in the power line communication device outlet unit 8 and the electronic device outlet unit 10 can be changed by changing the connection position 9, other configurations may be adopted. . For example, it is good also as a structure which changes the connection position of the high impedance part 9 by the switching type by the connection switch provided for every adapter side outlet jack 6. FIG.

It is a top view which shows the power line adapter apparatus of 1st Embodiment of this invention. In the power line adapter device of a 1st embodiment, it is a circuit diagram showing a high impedance part. FIG. 3 is a circuit diagram showing internal wiring in the power line adapter device of the first embodiment. In the power line adapter apparatus of 2nd Embodiment of this invention, it is a circuit diagram which shows an internal wiring. In the power line adapter apparatus of 3rd Embodiment of this invention, it is a block diagram which shows the structure of an internal wiring and a jack number change mechanism.

Explanation of symbols

Reference numerals 1, 21, 31 ... power line adapter device, 2 ... electronic device, 3 ... power line communication device, 4 ... adapter side outlet plug, 4a ... plug terminal, 5 ... electronic device outlet plug, 6 ... adapter side outlet jack, 6a ... jack Terminals 7 ... Case 8 ... Power line communication device outlet part 9 ... High impedance part 10 ... Electronic device outlet part 11 ... Adapter wiring 12 ... Balanced choke coil 13 ... Capacitor 14 ... Adaptation Device display, 15 ... Maximum output current display, 22 ... Fuse, 32 ... Jack number change mechanism

Claims (5)

A power line adapter device connected between an electronic device that does not perform power line communication and a power line communication device that performs power line communication and a power line outlet jack that transmits a signal current of power line communication,
An adapter-side outlet plug that can be connected to the outlet jack of the power line;
A plurality of adapter-side outlet jacks connected in parallel and connectable to an outlet plug of the electronic device or the power line communication device,
A plurality of the adapter-side outlet jacks are connected to the adapter-side outlet plug through a power line communication device outlet section directly connected to the adapter-side outlet plug and a high impedance increasing section that increases impedance with respect to the signal current. A power line adapter device characterized in that the power line adapter device is divided into an outlet portion for electronic equipment. In the power line adapter device according to claim 1,
The adapter-side outlet plug has a pair of plug terminals connectable to the outlet jack of a power line,
The adapter-side outlet jack has a pair of jack terminals connected to the pair of plug terminals via a pair of adapter wires;
The power line adapter device, wherein the high impedance unit includes a balanced line choke coil and a capacitor connected in parallel to each other between the pair of adapter wires. In the power line adapter device according to claim 1 or 2,
A jack number changing mechanism capable of changing the number of the outlet jacks on the adapter side in the outlet portion for the power line communication device and the outlet portion for the electronic device by changing a position where the high impedance portion is connected; A power line adapter device. In the power line adapter device according to any one of claims 1 to 3,
The power line adapter device, wherein the high impedance portion is connected to the adapter-side outlet plug through a fuse. In the power line adapter device according to any one of claims 1 to 4,
A housing in which a plurality of the adapter-side outlet jacks are fixed,
The housing is provided with an adaptive device display capable of distinguishing between the power line communication device outlet unit and the electronic device outlet unit, and a maximum output current display indicating a current capacity at which the high impedance unit can function. A power line adapter device.

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