JP3189642U - Charger for electronic equipment - Google Patents

Abstract

Provided is a charger for an electronic device that can receive power from a cigarette lighter socket or a USB receptacle without separately preparing a conversion adapter and can supply power to the electronic device.
An electronic device charger 10 includes a USB / A plug 20 disposed at a front end, a side input / output terminal 24 disposed on a side wall 12, and an electronic device terminal 16 for supplying electric power to an electronic device 94. With. The USB / A plug 92 is directly attached to the USB / A receptacle 92 of the personal computer 90 to receive power supply and supply power to the electronic device 94 via the electronic device terminal 16. Furthermore, the electronic device charger 10 is inserted into the cigarette lighter socket 82 and has a function of receiving power supply via the shield 22 and the side input / output terminal 24 of the USB • A plug 20.
[Selection] Figure 1

Description

  The present invention relates to a charger for electronic equipment that can be attached to a general-purpose receptacle such as a cigarette lighter socket or a USB receptacle installed in a vehicle or the like to receive power.

  In a conventional charger for an electronic device that supplies power to an electronic device via a USB plug (USB is a registered trademark) or a Lighting plug (Lightning is a registered trademark), it is dedicated as an input connector on the power supply side. The connector was used.

  For example, in the strap-type portable terminal charger disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-177996), the power supply from the power supply connection portion (4) on the power receiving side is controlled by the connector portion (5). The supply configuration is used. And as this power supply connection part (4), either an outlet plug that can be connected to a household power outlet, a USB connector that can be connected to a USB port for a personal computer, or a socket plug that can be connected to a power outlet for a vehicle cigarette lighter It is described that can be used.

JP 2009-177996 A

  2. Description of the Related Art Conventional chargers for electronic devices include a dedicated input connector such as a household power outlet, a USB receptacle, or a cigarette lighter socket as an input connector on the power supply side. In order to adapt and connect to each different connector, it is necessary to prepare a separate conversion adapter and perform the conversion of the connector and voltage through the conversion adapter.

  An object of the present invention is to provide an electronic device charger that can be directly attached to a cigarette lighter socket installed in a vehicle or the like and a general-purpose receptacle such as a USB receptacle to receive power supply. is there.

  Below, the means for solving the problem will be described using the numbers used in (Mode for carrying out the invention). These numbers are added to clarify the correspondence between the description of (Utility Model Registration Request) and (Mode for carrying out the invention). However, these numbers shall not be used for the interpretation of the technical scope of the device described in (Claim for Utility Model Registration).

  An electronic device charger (10) according to the present invention includes a shielded connector plug (20) disposed at a tip, a side input / output terminal (24) disposed on a side wall (12), and an electronic device (94). And an electronic device terminal (16) for supplying electric power to the device. The electronic device charger (10) has a function of receiving electric power via the shielded connector plug (20) and supplying electric power to the electronic device (94) via the electronic device terminal (16). ing. Furthermore, power is supplied from the cigarette lighter socket (82) via the shield (22) and the side input / output terminal (24) of the shielded connector plug (20), and the electronic device is connected via the electronic device terminal (16). A function of supplying power to the device (94) is provided.

  In the electronic device charger (10), a USB • A plug (20) can be used as the shielded connector plug (20).

  The shield (22) contacts and conducts with the center electrode (84) of the cigarette lighter socket (82), and the side input / output terminal (24) contacts with the side wall electrode (86) of the cigarette lighter socket (82). It is the structure which conducts.

  The shielded connector plug (20) has an entry / exit structure, and includes a biasing portion (28) that biases the shielded connector plug (20) in a protruding direction.

  The side entry / exit terminal (24) has an entry / exit structure that allows entry / exit, and includes an elastic part (25) that biases the side entry / exit terminal (24) in a protruding direction.

  The electronic device charger (10) receives power from the shield (22) and the side input / output terminal (24) of the shielded connector plug (20), converts the voltage, and converts the voltage to the electronic device terminal (16). A voltage converter (30) is provided for outputting power.

  The electronic device charger (10) includes a backflow prevention diode (27) between the shield (22) or the side input / output terminal (24) and the voltage converter (30).

  The electronic device charger (10) is supplied with electric power from the shielded connector plug (20) or the cigarette lighter socket (82) and supplies electric power via the electronic device terminal (16). It has an energizing lamp (26) for notifying that it is in a state where it can be performed.

  By using the electronic device charger of the present invention, it is directly attached to both a cigarette lighter socket installed in a vehicle or the like and a general-purpose receptacle such as a USB receptacle, and is supplied with power, via an output connector. Electric power can be supplied to the electronic device. And by using the charger for electronic devices of this invention, electric power can be supplied to an electronic device and charging etc. can be performed, without using a separate conversion adapter.

FIG. 1 is a diagram illustrating an external view and a connection example of an electronic device charger according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view showing a state where the electronic device charger of the present invention is mounted on a cigarette lighter socket. FIG. 3 is a diagram showing a circuit configuration example of the electronic device charger of the present invention. FIG. 4 is a circuit diagram showing another embodiment of the backflow prevention diode of the present invention.

  With reference to an accompanying drawing, the form for carrying out the charger for electronic devices by the present invention is explained below.

  FIG. 1 is a diagram illustrating an example of connection between a charger 10 for an electronic device according to an embodiment of the present invention, a cigarette lighter socket 82, a USB / A receptacle 92, and an electronic device 94. FIG. 2 is a partial cross-sectional view showing a state where the electronic device charger 10 is mounted on the cigarette lighter socket 82.

  First, the application of the electronic device charger 10 shown in FIG. 1 will be described. The electronic device charger 10 shown in FIG. 1 is directly attached to a USB / A receptacle 92 or a cigarette lighter socket 82 to receive power supply, and is an electronic device such as a mobile phone, a communication terminal, a game machine, or a tablet terminal. 94 is a device that supplies power to 94.

  Referring to FIG. 1, an electronic device charger 10 according to an embodiment of the present invention includes a USB / A plug 20 (one form of a shielded connector plug), a side input / output terminal 24, an energizing lamp 26, A cable 14, an electronic device terminal 16, and a cap 18 are provided.

  On the dashboard 83 of the vehicle 80, a cigarette lighter socket 82 capable of outputting electric power is installed. A USB / A receptacle 92 capable of supplying power and transmitting / receiving information is installed on the front surface of the personal computer 90.

  The USB / A plug 20 is a connector that can be attached to a general USB / A receptacle 92, and is a general-purpose connector for supplying power and transmitting / receiving information. In addition, the USB / A plug 20 according to the present invention is connected to the center electrode 84 (see FIG. 2) of the cigarette lighter socket 82 when inserted into the cigarette lighter socket 82. -The A plug 20 itself has a structure that allows mechanical entry and exit.

  In a state where no force is applied to the USB • A plug 20, the protruding state is maintained. When a force is applied to the USB • A plug 20 in the direction to be pushed into the electronic device charger 10, the USB • A plug 20 is pushed into the electronic device charger 10 by about 0.5 to 5 mm. It has an entry / exit structure. Further, the shield 22 of the USB • A plug 20 continues to contact the central electrode 84 (see FIG. 2) of the cigarette lighter socket 82 when the electronic device charger 10 is inserted into the cigarette lighter socket 82. Can be maintained.

  The side in / out terminal 24 is formed in a state in which a contact (terminal) that can be mechanically in and out protrudes from the side wall 12. When the electronic device charger 10 is inserted into the cigarette lighter socket 82, the side input / output terminal 24 radiates the side wall electrode 86 (see FIG. 2) formed on the cylindrical inner surface of the cigarette lighter socket 82 from the inside. , And electrical continuity with the side wall electrode 86 can be maintained.

  The energizing lamp 26 is a pilot lamp that is lit when the electronic device charger 10 is attached to the USB / A receptacle 92 of the personal computer 90 or the cigarette lighter socket 82 and is supplied with power. The user can confirm that the electronic device charger 10 is in a state in which power can be supplied to the electronic device 94 by turning on the power lamp 26.

  The cable 14 supplies power by connecting the electronic device 94 to the USB / A receptacle 92 of the personal computer 90 or the main body of the electronic device charger 10 mounted in the cigarette lighter socket 82.

  The electronic device terminal 16 is a connector attached to a charging socket 96 provided in the electronic device 94. As the electronic device terminal 16, a mini / micro type USB plug, a lighting plug, a dedicated power supply plug, or the like can be used according to the specifications of the electronic device 94.

  The cap 18 has a function of protecting the USB • A plug 20. When the electronic device charger 10 is not used, the cap 18 is put on the tip of the electronic device charger 10. Thereby, the trouble that dust enters into the opening of the USB • A plug 20 during carrying can be prevented, and the USB • A plug 20 can be protected.

  When power is supplied to the electronic device 94 using the electronic device charger 10, the electronic device charger 10 is first attached to the USB / A receptacle 92 or the cigarette lighter socket 82 of the personal computer 90, and Receive supply. When the energization is established, the energization lamp 26 is turned on, so that the user can know that the power supply is ready. Next, the electronic device terminal 16 of the electronic device charger 10 is attached to the charging socket 96 of the electronic device 94 to supply power to the electronic device 94.

  When power is supplied from the USB / A receptacle 92 of the personal computer 90 using the electronic device charger 10, the USB / A plug 20 of the electronic device charger 10 is directly connected to the USB / A receptacle 92 of the personal computer 90. Attach to. As the power, a voltage of 5 V can be input from the VBUS and GND terminals of the USB A receptacle 92. When a mini / micro USB plug or a lighting plug is used as the electronic device terminal 16, information is transmitted and received between the personal computer 90 and the electronic device 94 using the USB D + and D− terminals. It can also be done.

  On the other hand, when electric power is supplied from the cigarette lighter socket 82 using the electronic device charger 10, the electronic device charger 10 main body is directly inserted into the cigarette lighter socket 82. Electric power is supplied to the electronic device 94 after being stepped down by receiving a voltage of DC12-24V from the side wall electrode 86 and the central electrode 84 (see FIG. 2) disposed inside the cigarette lighter socket 82. Can do.

  Next, with reference to FIG. 2, an example of electrode connection when the electronic device charger 10 is supplied with power from a cigarette lighter socket 82 such as a vehicle 80 will be described. In addition, about the site | part same as the site | part shown in FIG. 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  Referring to FIG. 2, a general cigarette lighter socket 82 includes a cylindrical side wall electrode 86 disposed on the inner surface of the cigarette lighter socket 82, and a center electrode 84 disposed in the center of the cigar lighter socket 82 at the back. have. In a general vehicle, the side wall electrode 86 is a GND terminal (negative electrode terminal), and the central electrode 84 is a terminal (positive electrode terminal) that supplies a voltage of DC12-24V.

  The electronic device charger 10 includes a biasing portion 28 that biases the USB / A plug 20 in a protruding direction, an elastic portion 25 that biases the side input / output terminal 24 in a protruding direction, and a circuit that converts a voltage. Etc., and a flexible cable 23.

  In the embodiment shown in FIG. 2, the USB • A plug 20 of the electronic device charger 10 is biased in a direction protruding from the inside of the electronic device charger 10. As the urging portion 28, a coil spring, a leaf spring, a diaphragm, rubber, resin, sponge, or other elastic members can be used.

  Each terminal including the shield 22 of the USB • A plug 20 and each terminal on the circuit board 21 are connected by a flexible cable 23. By connecting using the flexible cable 23, the USB / A plug 20 is not disturbed.

  In the embodiment shown in FIG. 2, by inserting the electronic device charger 10 main body into the cigarette lighter socket 82, the central electrode 84 and the shield 22 of the USB • A plug 20 come into contact with each other, and the USB • A plug 20 The stroke ST is held in a pressed state. At this time, since the urging unit 28 continues to urge the USB / A plug 20 toward the central electrode 84, the central electrode 84 and the USB / A plug 20 can be kept in constant contact with each other. The conduction state can be maintained.

  In the embodiment shown in FIG. 2, the side input / output terminal 24 of the electronic device charger 10 is urged in a direction protruding from the inside of the electronic device charger 10. As the elastic portion 25, a hairpin spring, a coil spring, a diaphragm, rubber, resin, sponge, and other elastic members can be used in addition to the leaf spring.

  In the state shown in FIG. 2, the electronic device charger 10 body is inserted into the cigarette lighter socket 82, so that the side wall electrode 86 and the side input / output terminal 24 come into contact with each other and the side input / output terminal 24 is pushed in. Is held by. At this time, since the side portion input / output terminal 24 urges the side wall electrode 86 in the radial direction from the inside, the side wall electrode 86 and the side portion input / output terminal 24 can be always kept in contact with each other, and the conductive state is maintained. can do. In addition, the electronic device charger 10 can be prevented from falling off the cigarette lighter socket 82.

  In the embodiment shown in FIG. 1 and FIG. 2, an embodiment is shown in which the USB • A plug 20 is used as the input connector on the power supply side, but the present invention is not limited to the USB • A plug 20. Absent. For example, in addition to a mini / micro USB / A plug, other shielded connector plugs smaller than the inner diameter of the cigarette lighter socket 82 can be used. In that case, it is preferable that the shield of the shielded connector plug has a shape and a size in contact with the center electrode 84 of the cigarette lighter socket 82.

  Next, the circuit configuration of the electronic device charger 10 will be described with reference to FIG. Referring to FIG. 3, on circuit board 21, backflow prevention diode 27, fuse 29, voltage converter 30, energizing lamp 26, and connection for connection are arranged.

  The backflow prevention diode 27 is an element for supplying only the positive voltage among the voltages input from the shield 22 of the USB • A plug 20 to the voltage converter 30. Even when the electronic device charger 10 is inserted into the cigarette lighter socket 82 in which the central electrode 84 is the negative electrode and the side wall electrode 86 is the positive electrode (so-called plus earth car), the backflow prevention diode 27 is connected to the voltage converter 30. Since current backflow is prevented, damage or destruction of the voltage converter 30 can be prevented.

  As the backflow prevention diode 27, a diode bridge combined with the full-wave rectification type shown in FIG. 4 can be used. In this case, even if the electronic device charger 10 is inserted into the cigarette lighter socket 82 in which the central electrode 84 is the negative electrode and the side wall electrode 86 is the positive electrode (so-called plus-ground vehicle), the voltage converter 30 Is normally supplied with power and can supply power to the electronic device 94.

  The fuse 29 is for cutting off the power supply path when an excessive current flows for some reason to avoid damage to the circuit or the like.

  The voltage converter 30 is, for example, an element or circuit that steps down a DC12-24V DC voltage input from the cigarette lighter socket 82 to a voltage of 5V used in USB and outputs it. The voltage converter 30 is supplied with power from the shield 22 of the USB • A plug 20 and the side input / output terminal 24. A DC-DC converter, a regulator, or the like can be used as the step-down means in the voltage converter 30. A current limiting circuit can also be incorporated.

  The output of the voltage converter 30 is connected to the VBUS and GND terminals of the USB • A plug 20 and the electronic device terminal 16. Since the power lamp 26 is also connected to the VBUS and GND terminals of the USB / A plug 20 and the electronic device terminal 16, when power is supplied through the USB / A plug 20, and through the cigarette lighter socket 82. In both cases where power is supplied, the light can be lit when energized.

  Further, as shown in FIG. 3, by connecting the communication lines (D +, D−) of the USB / A plug 20 and the communication lines of the electronic device terminal 16, the electronic device charger 10 is connected to the USB. As a conversion cable, it can also be used for communication.

  As described above, the electronic device charger 10 according to the present invention receives power from the central electrode 84 of the cigarette lighter socket 82 through the shield 22 of the USB • A plug 20 and appropriately converts the voltage. Use the output configuration. As a result, it is possible to receive power supply by attaching to both the cigarette lighter socket 82 and the general-purpose receptacle such as the USB • A receptacle 92 without using a separate conversion adapter. Then, electric power can be supplied to the electronic device 94.

  The electronic device charger according to the present invention has been described above with reference to the embodiment. However, the electronic device charger according to the present invention is not limited to the above embodiment. Various modifications can be made to the above embodiment. It is possible to combine the matters described in the above embodiment with the matters described in the other embodiments.

10 ... Charger for electronic equipment 12 ... Side wall 14 ... Cable 16 ... Terminal 18 for electronic equipment ... Cap 20 ... USB / A plug (connector plug with shield)
21 ... Circuit board 22 ... Shield 23 ... Flexible cable 24 ... Side input / output terminal 25 ... Elastic part 26 ... Current lamp 27 ... Backflow prevention diode 28 ... Energizing 29 ... Fuse 30 ... Voltage converter 80 ... Vehicle 82 ... Cigar lighter socket 83 ... Dashboard 84 ... Center electrode 86 ... Side wall electrode 90 ... PC 92. ..USB / A receptacle 94 ... Electronic device 96 ... Charging socket

Claims (8)

A shielded connector plug disposed at the tip, a side access terminal disposed on the side wall, and an electronic device terminal for supplying power to the electronic device,
A function of receiving power through the shielded connector plug and supplying power through the terminal for electronic equipment;
An electronic device charger comprising a function of receiving electric power from a cigarette lighter socket through a shield and a side input / output terminal of the shielded connector plug and supplying electric power through an electronic device terminal. The charger for electronic devices according to claim 1, wherein the shielded connector plug is a USB • A plug. The shield is in contact with the center electrode of the cigarette lighter socket and conducts,
The electronic device charger according to claim 1, wherein the side input / output terminal is brought into contact with the side wall electrode of the cigarette lighter socket to be conducted. 4. The electronic device charger according to claim 1, wherein the shielded connector plug has an entrance / exit structure, and includes an urging portion that urges the shielded connector plug in a protruding direction. 5. . 5. The electronic device charger according to claim 1, wherein the side input / output terminal has an input / output structure capable of entering / exiting and includes an elastic portion that biases the side input / output terminal in a protruding direction. The voltage converter which receives supply of electric power from the shield and side part input / output terminal of the said shielded connector plug, converts a voltage, and outputs electric power to the terminal for electronic devices is provided. Charger for electronic devices. The electronic device charger according to claim 6, further comprising a backflow prevention diode between the shield or the side input / output terminal and the voltage converter. An energizing lamp for notifying that power is being supplied from the shielded connector plug or the cigarette lighter socket and is capable of supplying power via the electronic device terminal The charger for electronic devices in any one of Claims 1 thru | or 7.

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