Connecting structure of flexible printed circuit board to printed circuit board

• US 20060025023A1
• Filed: 04/25/2005
• Published: 02/02/2006
• Est. Priority Date: 04/28/2004
• Status: Active Grant

• Current Assignee: Funai Electric Co., Ltd.
• Original Assignee: Funai Electric Co., Ltd.
• Inventors: Ikeda, Aiichiro
• Granted Patent: US 7,147,480 B2
• Time in Patent Office: Days
• US Class Current: 439/835
• CPC Class Codes: H01R 12/62 connecting to rigid printed circuits or like structures
• CPC Class Codes: H01R 12/772 Strain relieving means
• CPC Class Codes: H01R 13/631 for engagement only
• CPC Class Codes: H05K 2201/048 Second PCB mounted on first PCB by inserting in window or holes of the first PCB
• CPC Class Codes: H05K 2201/09063 Holes or slots in insulating substrate not used for electrical connections
• CPC Class Codes: H05K 2201/091 Locally and permanently deformed areas including dielectric material
• CPC Class Codes: H05K 3/363 by soldering

Abstract

The present invention provides a simple connecting structure of flexible printed circuit board to printed circuit board in which when connecting a flexible printed circuit board to a printed circuit board, the positioning thereof can be made easily, the connection therebetween can be made smoothly and rigidly, and further the assembling time can be reduced. Patterns 6 and 7, respectively, on a flexible printed circuit board 4 and a printed circuit board 1 are to be aligned and connected with each other by soldering. An elongate hole 2 is bored in the vicinity of and along the edge portion 1a in a connecting part of the printed circuit board 1, and two rectangular holes 3 communicating with the elongate hole 2 are formed toward the opposite direction of the edge portion 1a in both longitudinal end portions of the elongate hole 2, while two cut portions 5 for controlling insertion depth are provided on both ends of the connecting edge of the flexible printed circuit board 4. The leading edge portion 4a of the flexible printed circuit board 4, which is left between the cut portions 5, is bent downward, and the bent portion is inserted into the elongate hole 2 and the rectangular holes 3 of the printed circuit board 1 to position the flexible printed circuit board 4, and then the patterns 6 and 7, respectively, on the flexible printed circuit board 4 and the printed circuit board 1 are connected by soldering 10.

Claims

1. A connecting structure for connecting a first flexible printed circuit board to a second printed circuit board with patterns on the first flexible printed circuit board aligned with patterns on the second printed circuit board for soldering together the first and second printed circuit boards, wherein

an elongate hole is bored in the vicinity of and along an edge portion in a connecting part of the second printed circuit board, and rectangular holes communicating with said elongate hole are formed toward the opposite direction of the edge portion in both longitudinal end portions of said elongate hole, while cut portions for controlling insertion depth are provided on both ends of the connecting edge of the first printed circuit board, a leading edge portion of the first printed circuit board, which is left between said cut portions, being bent downward, and wherein:

said bent portion is inserted into said elongate hole and said rectangular holes of the second printed circuit board to position the first printed circuit board, and patterns on the first and second printed circuit boards, which face each other, are connected by soldering.

2. A connecting structure for connecting a first flexible printed circuit board to a second printed circuit board with patterns on the first flexible printed circuit board aligned with patterns on the second printed circuit board for soldering together the first and second printed circuit boards, wherein

an elongate hole is bored in the vicinity of and along an edge portion in a connecting part of the second printed circuit board, and cut portions for controlling insertion depth are provided on both ends of the connecting edge of the first printed circuit board, a leading edge portion of the first printed circuit board, which is left between said cut portions, being bent downward, and wherein:

said bent portion is inserted into said elongate hole of the second printed circuit board to position the first printed circuit board, and patterns on the first and second printed circuit boards, which face each other, are connected by soldering.

3. The connecting structure according to claim 2, wherein rectangular holes communicating with said elongate hole are formed toward the edge portion in both longitudinal end portion of said elongate hole of the second printed circuit board, the leading edge portion of the first printed circuit board, which is left between said cut portions, being inserted into said elongate hole and said rectangular holes of the second printed circuit board.

4. The connecting structure according to claim 2, wherein tapered cut portions which narrow toward the connecting edge are provided on both ends of the leading edge portion of the first printed circuit board, which is left between said cut portions.

5. The connecting structure according to claim 3, wherein tapered cut portions which narrow toward the connecting edge are provided on both ends of the leading edge portion of the first printed circuit board, which is left between said cut portions.