Patent Application
20150295440
1. Field of the Invention
The present invention relates to power supply technology and more particularly, to a mobile power supply device that provides multiple electrical connection terminals for charging multiple mobile electronic devices at a time.
2. Description of the Related Art
With the advancement of digital electronic communication devices and networks, we can see people operating smart phones, tablet PCs and other mobile electronic devices anywhere and anytime. These mobile electronic devices have become very popular over the years, and are widely used by people as requisite personal equipment. As these portable electronic devices can help people deal with a lot of daily affairs or information inquiries, and can also be used as a multimedia device for social communication and entertainment purposes, their importance in our daily life is undoubtable.
With functional integration, sophisticated mobile electronic devices are continuously created. In order to enhance portability, these sophisticated mobile electronic devices are small-sized, however, they have the problem of high power consumption.
People normally will use a power cable to connect a mobile electronic device to a city power supply outlet for enabling the battery of the mobile electronic device to be charged. A mobile power supply device can also be used to charge mobile electronic devices anywhere and anytime. Many high capacity mobile power supply devices are commercially available. However, these commercial mobile power supply devices commonly have only one electrical connection terminal for power output, i.e., these commercial mobile power supply devices can only charge one particular mobile electronic device at a time.
The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a mobile power supply device, which comprises a plurality of electrical connection terminals respectively electrically connectable to different mobile electronic devices for charging multiple mobile electronic devices at a time.
To achieve this and other objects of the present invention, a mobile power supply device of the invention comprises a casing, a battery set, a control unit, a first transmission arm, and a second transmission arm. The casing comprises an accommodation chamber defined therein and a locating groove extending around the periphery thereof. The battery set is mounted in the accommodation chamber of the casing. The control unit is mounted in the accommodation chamber of the casing and electrically coupled with the battery set. The first transmission arm is receivable in the locating groove of the casing at one side relative to the casing, comprising a first end fastened to the casing and defining with the locating groove a first receiving chamber, a second end opposite to the first end, a first electrical connection terminal located at the second end and electrically connected to the control unit for charging an external mobile electronic device, a first extension arm extended from a middle part thereof, and a second electrical connection terminal located at a distal end of the first extension arm and electrically connected to the control unit for charging an external mobile electronic device. The second transmission arm is receivable in the locating groove of the casing at an opposite side relative to the casing, comprising a first end fastened to the casing and defining with the locating groove a second receiving chamber for receiving the first electrical connection terminal, a second end opposite to the first end, and a third electrical connection terminal located at the second end and electrically connected to the control unit for charging an external mobile electronic device.
Other advantages and features of the present invention will be fully understood by reference to the following specification in conjunction with the accompanying drawings, in which like reference signs denote like components of structure.
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The casing 1 comprises an accommodation chamber 11, a partition plate 12 transversely disposed in the accommodation chamber 11, a locating groove 16 extending around the periphery thereof, two connection holes 17 and 17a located in the periphery thereof at two opposite sides, and two insertion holes 18 and 18a located in the periphery thereof and respectively disposed adjacent to the connection holes 17 and 17a. The top cover 13 and the bottom cover 14 are respectively attached to opposing top and bottom sides of the casing 1. The top cover 13 comprises a plurality of mounting flanges 131 respectively downwardly extended from the border area thereof and respectively downwardly inserted into the top side of the casing 1 and abutted against the inside wall of the casing 1, a plurality of connection columns 132 downwardly extended from a bottom wall thereof at selected locations, and a plurality of lamp holes 133 cut through the opposing top and bottom walls thereof. The bottom 14 comprises a plurality of mounting flanges 141 respectively upwardly inserted into the bottom side of the casing 1 and abutted against the inside wall of the casing 1, and a plurality of connection columns 142 upwardly extended from a top wall thereof and respectively fixedly fastened to the connection columns 132 of the top cover 13 by respective screws 15.
The battery set 2 is mounted in the accommodation chamber 11 of the casing 1 and supported on the partition plate 12. In this embodiment, the battery set 2 consists of a plurality of battery cells electrically connected in series.
The control unit 3 is mounted in the accommodation chamber 11 of the casing 1 and electrically coupled with the battery set 2 for controlling charging and discharging operations of the battery set 2. Further, the control unit 3 comprises a circuit board 31 fixedly supported on the partition plate 12, a plurality of indicator lights 32 installed in the circuit board 31 and respectively facing toward the lamp holes 133 and respectively controllable by the circuit board 31 to give off light through the lamp holes 133, and an electrical connector 33 electrically connected to the circuit board 31.
The first transmission arm 4 and the second transmission arm 5 are elastically deformable members respectively connected to the connection holes 17 and 17a of the casing 1 and received in the locating groove 16 of the casing 1. The first transmission arm 4 comprises a mounting frame 41 located at one end thereof and providing a plurality of hook rods 411 for hooking in one connection hole 17 of the casing 1 to secure the first transmission arm 4 to the casing 1, a set of lead wires 42 inserted through one insertion hole 18 of the casing 1 and electrically connected to the control unit 3 and the battery set 2 for the transmission of the battery power supply of the battery set 2, a first electrical connection terminal 43, for example, but not limited to, Micro USB connector, located at an opposite end thereof remote from the mounting frame 41 and electrically coupled with the set of lead wires 42 for power transmission, an elastically deformable first extension arm 44 extended from a middle part thereof, a second electrical connection terminal 45, for example, but not limited to, lightning connector, located at a distal end of the first extension arm 44 and electrically coupled with the set of lead wires 42 for communication with the control unit 3, and an opening 46, as shown in
The second transmission arm 5 comprises a mounting frame 51 located at one end thereof and providing a plurality of hook rods 511 for hooking in the other connection hole 17a of the casing 1 to secure the second transmission arm 5 to the casing 1, a set of lead wires 52 inserted through the other insertion hole 18a of the casing 1 and electrically connected to the control unit 3 and the battery set 2 for the transmission of the battery power supply of the battery set 2, a third electrical connection terminal 53, for example, but not limited to, USB connector, located at an opposite end thereof remote from the mounting frame 51 and electrically coupled with the set of lead wires 52 for power transmission.
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Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
