FLEX-RIGID WIRING BOARD AND METHOD FOR MANUFACTURING THE SAME

• US 20120249283A1
• Filed: 01/14/2010
• Published: 10/04/2012
• Est. Priority Date: 01/21/2009
• Status: Active Grant

• Current Assignee: Dexerials Corporation
• Original Assignee: Sony Chemical & Information Device Corporation (Sony Group Corp.)
• Inventors: Kimura, Yuji, Asada, Takahiro, Suzuki, Kazuaki
• Granted Patent: US 8,803,652 B2
• Time in Patent Office: Days
• US Class Current: 337/416
• CPC Class Codes: H01H 1/5805 Connections to printed circuits for slide switches H01H15/005; for tumbler switches H01H23/006
• CPC Class Codes: H01H 2037/768 characterised by the composition of the fusible material
• CPC Class Codes: H01H 37/761 with a fusible element forming part of the switched circuit H01H37/767 takes precedence
• CPC Class Codes: Y10T 29/49107 Fuse making

Abstract

A protection element is provided which is capable of stably retaining a flux on a soluble conductor at a predetermined position, enabling a speedy and precise blowout of the soluble conductor in the event of an abnormality. This protection element includes: a soluble conductor 13 which is disposed on an insulation baseboard 11 and is connected to a power supply path of a device targeted to be protected, to cause a blowout by means of a predetermined abnormal electric power; a flux 19 which is coated onto a surface of the soluble conductor 13; and an insulation cover 14 which is mounted on the baseboard 11 with the soluble conductor 13 being covered therewith. In addition, the protection element is provided with a protrusive stripe portion 20 which is formed on an interior face of the insulation cover 14 in opposite to the soluble conductor 13 and in which a stepped portion 20a for retaining the flux 19 is formed at a predetermined position while in contact with the flux 19. The soluble conductor 13 has a hole portion 13a at which the flux 19 is retained.

Claims

1. A protection element including:

a soluble conductor which is disposed on an insulation baseboard and is connected to a power supply path of a device targeted to be protected, to cause a blowout by means of a predetermined abnormal electric power;

an insulation cover which is mounted on the baseboard with the soluble conductor being covered via a predetermined space; and

a flux which is applied to a surface of the soluble conductor and is positioned in the space,

the protection element being adapted for, in case that the abnormal electric power is supplied to the device targeted to be protected, allowing the soluble conductor to cause a blowout and then to shut off a current path of the conductor,

the protection element comprising a stepped portion which is formed on an interior face of the insulation cover in opposite to the soluble conductor, for retaining the flux at a predetermined position in the space in contact with the flux,

wherein a hole portion retaining the flux is formed at the soluble conductor.

2. The protection element according to claim 1, wherein the hole portion of the soluble conductor is a through hole formed at a center part of the soluble conductor.

3. The protection element according to claim 1, wherein the stepped portion is made of a protrusive stripe portion which is formed on the interior face of the insulation cover and provided in face-to-face opposite to the hole portion of the soluble conductor.

4. The protection element according to claim 2, wherein a protrusive portion is formed along a peripheral edge part on a peripheral surface of the hole portion at the center part of the soluble conductor.

5. The protection element according to claim 2, wherein at the soluble conductor, a relatively small hole portion is formed at a portion other than the center part of the soluble conductor.

6. The protection element according to claim 1, wherein a number of small hole portions are formed at the soluble conductor.

7. The protection element according to claim 1, wherein an opening portion which is a through hole is formed inside of the stepped portion of the insulation cover.