US 11,469,069 B1Granted

Airtight surface mount fuse with insert cavity

AssigneeConquer Electronics Co., Ltd.

InventorsHung-Chih Chiu, Po-Shuo Chiu

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Abstract

An airtight surface mount fuse with a cavity has a housing, a conductive fuse, a cover and an encapsulant. The housing has an opening and an airtight inner space. The fusible element has a part disposed inside of the airtight inner space and another part exposed from the opening. The cover is configured to fit into the opening. The encapsulant encapsulates the housing, the cover and a segment of the exposing part of the fusible element. The other segment of the fusible element is exposed from the encapsulant. The inner space of the housing is encapsulated by the encapsulant and becomes airtight. The fusible element is disposed inside of the airtight inner space to prevent the hazard occurring from arc spark interacting with flammable gases when a fusible body of the fusible element is fused. It also ensures the fusible body is affected by the external environment.

Claims20

Dependent claims

An airtight surface mount fuse with a cavity, comprising:

a housing having an opening and an airtight inner space, wherein the opening comprises two first sides and two second sides;
a fusible element having a fusible body, two intermediary portions and two conductive portions, wherein each of the intermediary portions is connected between a corresponding end of the fusible body and the corresponding conductive portion, the fusible body and the two intermediary portions are disposed inside of the inner space of the housing, and each of the conductive portions extends out of the housing from the opening;
a cover disposed on the opening of the housing and comprising an external surface, two third sides and two fourth sides, wherein the external surface of the cover is flush with the two first sides of the opening;
and
an encapsulant encapsulating the housing, the cover and a part of the conduction portions located at the joint between the housing and the cover, wherein the two conductive portions of the fusible element have a part exposing out of the encapsulant, which is bent and attached to the encapsulant which encapsulates a corresponding part of the external surface of the cover.

2 more elements

Dependencies are inferred from the claim text.