The present invention relates to power outlet/battery chargers for portable electronic/electrical devices, and in particular, to a USB (Universal Serial Bus) power socket/charger that can directly replace a cigar lighter/power outlet socket commonly found in automotive vehicles. In particular, the invention relates to a power outlet/charger that can be used as a direct replacement for an automotive cigar lighter/power outlet and having a USB jack for receiving a USB connector plug at an output end and having a US-CAR (United States Counsel for Automotive Research) connector at an input end. US-CAR connectors are commonly found on the wiring harnesses of currently made United States production vehicles for connecting the vehicle wiring harness to a power outlet/cigar lighter socket.
Presently, automobiles manufactured in the U.S. are commonly provided with either a cigar lighter or power outlet or both types of sockets. The cigar lighter socket can receive a cigar lighter which is heated in the socket to an ignition temperature and has an automatic disconnect device, typically a bimetal device, either found in the socket or in the cigar lighter plugged into the socket.
Power outlets having similar proportions are commonly found in vehicles. These power outlets are adapted to receive the accessory plugs of portable electrical/electronic devices and/or charging devices. The cigar lighter socket, in addition to being able to receive a cigar lighter, can also receive the same electrical accessory plug received by the power outlet.
Such plugs typically have a spring loaded center contact for connecting to a center positive side supply contact of the socket of the power outlet/cigar lighter receptacle, and one or more spring mounted side contacts which engage with the socket wall and which functions as the ground return. An example of the type of accessory plug is shown at 100 on
Many of today's portable electronic devices are provided with a USB connection. The USB connection can function to enable serial data transfer between devices connected by the USB cable. In addition, the USB connection includes a voltage source connection to the connected device that can be used to charge the battery of the portable device. The USB voltage is typically 5 volts.
The cigar lighter/power outlet sockets can be used to charge the batteries of portable electronic devices. However, in order to utilize the power outlets/cigar lighter outlets of automotive vehicles to charge a device that conforms to the USB standard, it is necessary to provide a converter that will convert the 12-14 volt supply voltage from an automotive vehicle to the 5 volt USB standard. Furthermore, it is necessary that such a converter have an adaptor plug that can plug into the automotive cigar lighter/power outlet style socket, provide power to the converter through a suitable electrical connector arrangement and provide a male USB type connector for plugging into the portable electrical/electronic device being recharged.
This presents the need for separate converter/charging devices and the accompanying need to store them in the vehicle or carry them as needed when it is necessary to power or charge the portable electronic/electrical device.
At the same time, there is less need for the older style cigar lighter/power outlet sockets that have been typically employed in the past because so many devices now conform to the USB connector standard.
There is a need therefore, for a permanently fixed power outlet/charging device that can be employed in vehicles to provide a 5 volt supply through a USB connector for powering and/or charging electrical devices through a USB connector plug.
There is furthermore a need for such a USB style power outlet/charger that can provide a direct replacement for the standard 12 volt cigar lighter/power outlet socket now employed in vehicles that provides a 5 volt supply conforming to the USB standard.
Furthermore, there is a need for such a power outlet/charger that can provide up to 2.1 Amperes at 5 volts through a USB style connector for USB 2.0 smart charging for a variety of mobile/portable devices such as cell phones and tablet computers, for example, the Apple iPhone and iPad, that require higher current charging, i.e., up to 2.1 Amps.
The above and other objects of the invention are achieved by a power outlet/battery charger for a portable electric/electronic device, the power outlet/charger comprising an electrically insulating housing having a proximal end having an opening and a distal end having a first electrical connector; an electronic converter circuit fixedly housed in the housing for receiving a first voltage from a vehicle electrical power source through the first connector and for converting the first voltage to a second voltage compatible with the USB (Universal Serial Bus) standard; and a USB connector disposed through the proximal end opening and connected to receive the second voltage; the housing being sized to directly replace a standard vehicle electrical cigar lighter socket/power outlet and fit into an opening in a vehicle panel for the standard vehicle electrical cigar lighter socket/power outlet, the first electrical connector being connectable to an electrical wiring harness of the vehicle having a connector that releasably connects with the first connector.
Preferably, the first connector is a US-CAR connector.
Other objects, features and advantages of the present invention will be apparent from the Detailed Description which follows.
The invention will now be described in greater detail in the following Detailed Description with reference to the drawings in which:
With reference now to the drawings,
The commonly available power outlet is shown in
The US-CAR connector is shown in
The present invention thus provides an electrical power outlet/charger that will replace the commonly available cigar lighter/power outlet socket, receives the US-CAR connector from the vehicle harness and converts the 12-14 volt vehicle supply voltage to the 5 volt USB standard and provides a USB style female connector for receiving a male USB connector to connect to a portable device.
As shown in
As shown in
As shown, the faceplate/light pipe 24 preferably also includes a battery charging symbol 26. In a darkened vehicle interior, the member 24 will be illuminated, thus exposing the socket 22 to view and contrasting the battery charging symbol 26.
Preferably, the cover 16 is hinged at the bottom, as shown, but it can be hinged from the top or from the side as desired.
Also shown in
Turning now to
The PCB assembly 32 slides into the opening 12B of housing 12 and the US-CAR connector terminals 34 slide through openings provided at the rear of the housing 12 and thus form the integral US-CAR connector 14. At the front end, after the printed circuit board is disposed in the housing 12, the faceplate/light pipe 24 (made of a light transmissive material) is snapped into the housing 12 and it is secured by suitable flexible locking tabs 25 into openings 13 in the housing 12. An O-ring or other gasket 24C can be provided between member 24 and the opening 12B in the housing 12.
The cover 16 may comprise, for example, three members, including an ornamental cover 16A, an ornamental ring or bezel 16B which may comprise, for example, a chrome ring and a rubber/foam seal/water ingress seal 16C. The cover 16, as described previously, is mounted on a pivot shaft 16D and is biased into closed position by a torsion spring 18.
The power outlet/charger 10 may be provided with a suitable panel gasket 40 which is slid onto the housing 12 and provides a gasket between the shoulder 12A of the housing 12 and the vehicle panel 31.
Although the present invention has been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become apparent to those skilled in the art. Therefore, the present invention should be limited not by the specific disclosure herein, but only by the appended claims.
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Number | Date | Country | |
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20140328076 A1 | Nov 2014 | US |