Patent ID: 7473487
Filing Date: 2009-01-06
Classification: H01H,H01M,Y02E

Abstract:
1. A thermal fuse, comprising: a first insulating film having a plate shape; a first metal terminal; a second metal terminal; a fusible alloy including a first side portion, a second side portion opposite said first side portion, a first end connecting portion, and a second end connecting portion, said first end connecting portion being connected to said first metal terminal and said second end connecting portion being connected to said second metal terminal; a volume of flux on said fusible alloy; a second insulating film sealed to said first insulating film along first and second end sealing portions and first and second side sealing portions to provide an enclosure for said fusible alloy, said volume of flux, a portion of said first metal terminal, and a portion of said second metal terminal; wherein said first end sealing portion is located closer to said first end connecting portion than to said second end connecting portion; wherein said second end sealing portion is located closer to said second end connecting portion than to said first end connecting portion; wherein said first side sealing portion is located closer to said first side portion of said fusible alloy than to said second side portion of said fusible alloy; wherein said second side sealing portion is located closer to said second side portion of said fusible alloy than to said first side portion of said fusible alloy; wherein a first space is defined within said enclosure between said first end connecting portion and said first end sealing portion, said first space being configured to receive a flow of said volume of flux; wherein a volume of said first space is larger than said volume of flux such that said volume of flux can be spaced apart from said fusible alloy when said volume of flux is in said first space; wherein a second space is defined within said enclosure between said first side portion of said fusible alloy and said first side sealing portion; and wherein a volume of said second space is larger than said volume of said flux such that said volume of flux can be spaced apart from said fusible alloy when said volume of flux is in said second space.