Panel mounted USB charger

• US 9,755,447 B2
• Filed: 04/02/2015
• Issued: 09/05/2017
• Est. Priority Date: 04/04/2014
• Status: Active Grant

• Current Assignee: Carling Technologies, Inc. (Littelfuse Incorporated)
• Original Assignee: Carling Technologies, Inc. (Littelfuse Incorporated)
• Inventors: Ries, Brian Joseph, Bertalan, Zoltan, Fitch, Trevor
• Primary Examiner(s): Gilman, Alexander
• Application Number:
  US14/677,661
• Publication Number:
  US 20150288208A1
• Time in Patent Office: 887 Days
• Field of Search: 439345, 439170, 439 36, 320115, 320111
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

A USB charging device that is designed for installation in wet and/or environments where corrosive moisture (e.g., saltwater) are prevalent including a water tight enclosure that includes a door that is biased to a closed position to form a water tight seal over a USB receptacle. The device includes an intermediate seal that seals between the USB receptacles and the power electronics situated in the lower portion of the device. The device is also provided such that the lower portion may be slid into the upper portion to form a mechanical interlock and form an electrical connection between the upper and lower portions while simultaneously forming a water tight seal.

Claims

1. A USB charging device comprising:

a base;

a bracket;

said bracket attachable with said base;

a cover attached to said bracket in a water tight manner and having at least one opening formed therein;

at least one door;

at least one hinge affixing said at least one door to said cover;

a biasing mechanism for biasing said at least one door in a closed position with respect to said cover;

a seal formed around said at least one opening for forming a water tight seal with said at least one door when the door is in the closed position;

at least one Universal Serial Bus (USB) receptacle accessible via the at least one opening in said cover;

at least one Printed Circuit Board (PCB) electrically connected to said at least one USB receptacle, wherein said at least one PCB comprises a first PCB and a second PCB, said first PCB being electrically connected to said second PCB, said charging device further comprising an intermediate seal formed between said first PCB and said second PCB such that moisture is inhibited from moving from an area housing said first PCB to an area housing said second PCB;

said bracket having a mounting portion for engaging with a surface for mounting of said USB charging device in an exterior environment.

2. The USB charging device according to claim 1 wherein said cover has two opening formed therein and said at least one USB receptacle comprises two USB receptacles, each USB receptacle having a door and a hinge and a biasing mechanism for biasing each door to a closed position relative to said cover, said seal formed around each opening, and wherein both of said USB receptacles are electrically connected to said at least one PCB.

3. The USB charging device according to claim 1 further comprising at least two terminals extending from said base for connecting to an electrical power source.

4. The USB charging device according to claim 3 further comprising at least one additional terminal extending from said base functioning as a heat sink.

5. The USB charging device according to claim 1 wherein the first PCB is provided with a first terminal and the second PCB is provided with a second terminal, the first terminal being electrically coupleable with the second terminal.

6. The USB charging device according to claim 5 wherein the first and second terminals comprise an edge connector and receptacle arraignment such that the first and second terminals are detachably electrically coupled to each other.

7. The USB charging device according to claim 6 wherein when an upper portion of the base and a lower portion of the bracket are advanced fully together the base and bracket form a mechanical interlock and the first and second terminals form an electrical connection.

8. The USB charging device according to claim 1 further comprising a light source and a light transmitter terminating at cover, said light transmitter emitting light generated by said light source when a device is successfully coupled to said USB receptacle and charging.

9. The USB charging device according to claim 8 wherein said light source comprises a Light Emitting Diode (LED) and said light transmitter comprises a fiber optic cable.

10. The USB charging device according to claim 1 wherein said at least one hinge includes a pin engaged with an opening, and said biasing mechanism comprises a spring.

11. The USB charging device according to claim 10 wherein said spring is wound around said pin and engages with said at least one door and said cover such that said spring is maintained within the water tight enclosure when the door is closed.

12. The USB charging device according to claim 11 wherein said spring comprises a double torsion spring.

13. The USB charging device according to claim 12 wherein said at least one door includes a cavity located therein for receiving one end of said spring.

14. The USB charging device according to claim 1 further comprising a panel seal for sealing said USB charging device relative to the surface it is affixed to.

15. The USB charging device according to claim 1 wherein said base, bracket, cover and door each comprise a molded plastic material.

16. The USB charging device according to claim 1 wherein said seal includes an upper portion that extends around and over an outer peripheral edge of said USB receptacle such that when a USB plug is inserted into said USB receptacle, the upper portion of said seal contacts an outer part of the USB plug to form a seal preventing water from entering said USB receptacle when said door is open.

17. A USB charging device for use in exterior environments, said charging device comprising:

a base;

a bracket;

said bracket attachable with said base;

a cover attached to said bracket in a water tight manner and having at least two openings formed therein;

at least two doors;

at least two hinges each affixing one of said at least two doors to said cover;

at least two biasing mechanisms, each biasing one of said at least two doors to a closed position with respect to said cover;

a seal formed around said at least two openings forming a water tight seal with said at least two doors when each door is in the closed position;

at least two Universal Serial Bus (USB) receptacles each accessible via one of the at least two openings in said cover;

at least one Printed Circuit Board (PCB) electrically connected to said at least two USB receptacles, wherein said at least one PCB comprises a first PCB and a second PCB, said first PCB is electrically connected to said second PCB, said charging device further comprising an intermediate seal formed between said first PCB and said second PCB such that moisture is inhibited from moving from an area housing said first PCB to an area housing said second PCB;

said bracket having a mounting portion for engaging with a surface for mounting of said USB charging device in an exterior environment.

18. The USB charging device according to claim 17 wherein the first PCB is provided with a first terminal and the second PCB is provided with a second terminal, the first terminal being electrically coupleable with the second terminal.

19. The USB charging device according to claim 18 wherein the first and second terminals comprise an edge connector and receptacle arraignment such that the first and second terminals are detachably electrically coupled to each other.

20. The USB charging device according to claim 19 wherein when an upper portion of the base and a lower portion of the bracket are advanced fully together the base and bracket form a mechanical interlock and the first and second terminals form an electrical connection.

21. The USB charging device according to claim 17 wherein said at least two hinges each include a respective pin engaged with a respective opening, and said at least two biasing mechanisms each comprise a double torsion spring.

22. The USB charging device according to claim 21 wherein each of said springs is wound around each respective pin, each spring engaging with a cavity located in each respective door such that each spring biases each respective door to a closed position relative to said cover.

23. The USB charging device according to claim 17 wherein said base, bracket, cover and two doors each comprise a molded plastic material.

24. The USB charging device according to claim 17 wherein said seal includes an upper portion that extends around and over an outer peripheral edge of said at least two USB receptacles such that when a USB plug is inserted into a respective one of said at least two USB receptacles, the upper portion of said seal contacts an outer part of the USB plug to form a seal preventing water from entering said respective USB receptacle.