Back to results
US 12,400,818 B2Granted
Fuse device
AssigneeDexerials Corporation
InventorYoshihiro Yoneda
Life of this patent
Estimating the term…
Abstract
Provided is a fuse device capable of maintaining the insulation performance while using a fuse element having a considerable size to improve rating. The fuse device includes a fuse element 2 and a case 3 for housing the fuse element 2, and the case 3 has a resin portion 4 having a surface to be melted by heat accompanying blowout of the fuse element 2 on at least a part of an inner wall surface 8a facing the inside 8 housing the fuse element 2.
Claims26
A fuse device comprising:
- a fuse element;
- and
- a case for housing the fuse element,
- wherein the case includes a resin portion having a surface to be melted by heat accompanying blowout of the fuse element on at least a part of an inner wall surface facing an inside for housing the fuse element, and wherein the resin portion is present over an entire circumference of the inner wall surface and surrounds the fuse element,
- wherein the fuse element is mounted in contact with the inner wall surface of the case and is in contact with at least a part of the resin portion,
- wherein the case has a groove portion in which the fuse element comes into contact with air on a part of the inner wall surface,
- wherein the resin portion is formed from only one type of resin material, selected from the group consisting of nylon 46, nylon 4T, nylon 10T, PFA, FEP, ETFE, EFEP, CPT, and PCTFE,
- wherein the fuse device is configured and the resin material is selected such that upon blowout of the fuse element, the resin material is melted and at least one void is formed in a surface of the resin portion, and melted and scattered material of the fuse element is captured in the at least one void of the resin portion and is thereby prevented from continuously adhering to the inner wall surface and reaching both ends of an energization direction of the fuse element, thereby preventing a situation in which both ends of the blown-out fuse element are short-circuited, and
- wherein the resin portion is made of a material having a tracking resistance of 250 V or more.
6 more elements
A fuse device comprising:
- a fuse element;
- and
- a case for housing the fuse element,
- wherein the case includes a resin portion for capturing melted and scattered material of the fuse element on at least a part of an inner wall surface facing an inside for housing the fuse element,
- wherein the fuse element is mounted in contact with the inner wall surface of the case and is in contact with at least a part of the resin portion,
- wherein the case has a groove portion in which the fuse element comes into contact with air on a part of the inner wall surface,
- wherein the resin portion is formed from only one type of resin material, selected from the group consisting of nylon 46, nylon 4T, nylon 10T, PFA, FEP, ETFE, EFEP, CPT, and PCTFE,
- wherein the fuse device is configured and the resin material is selected such that upon blowout of the fuse element, the resin material is melted and at least one void is formed in a surface of the resin portion, and melted and scattered material of the fuse element is captured in the at least one void of the resin portion and is thereby prevented from continuously adhering to the inner wall surface and reaching both ends of an energization direction of the fuse element, thereby preventing a situation in which both ends of the blown-out fuse element are short-circuited, and
- wherein the resin portion is made of a material having a tracking resistance of 250 V or more.
6 more elements
Dependencies are inferred from the claim text.