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公开(公告)号：US20240258055A1
公开(公告)日：2024-08-01
申请号：US18563373
申请日：2022-04-21
发明人： Yusuke Kondo , Akihiko Shimizu
CPC分类号： H01H39/006 , H01H85/38 , H01H2231/026
摘要： The present invention provides an electric circuit breaker that quickly breaks current in a wide current range up to a relatively low current as well as a relatively high current. An electric circuit breaker 600 that includes a housing 300, a cut portion 400 that is disposed in the housing 300 and constitutes a part of an electric circuit, a first power source P that is disposed on a side of a first end portion 320 of the housing 300, and a moving body 500 that moves in the housing 300 between the first end portion 320 and a second end portion 330 opposite to the first end portion 320, the electric circuit breaker including a fuse function portion 700 that includes a fusion portion 740 and an arc-extinguishing material 730, wherein the moving body 500 is configured to cut a cut piece 420 positioned between base pieces 430 on both sides of the cut portion 400 at a part of the moving body 500 while moving from the first end portion 320 toward the second end portion 330 by the first power source P, in a case where a current to be broken is low, the fuse function portion 700 and the cut portion 400 are not connected, the moving body 500 is moved toward the second end portion 330 by the first power source P to cut the cut piece 420 positioned between the base pieces 430 on both sides of the cut portion 400 to break a state where the base pieces 430 on both sides of the cut portion 400 are energized, and in a case where the current to be broken is high, the fuse function portion 700 and the cut portion 400 are connected to each other, the moving body 500 is moved toward the second end portion 330 by the first power source P to cut the cut piece 420 positioned between the base pieces 430 on both sides of the cut portion 400 to break the state where the base pieces 430 on both sides of the cut portion 400 are energized.
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公开(公告)号：US20230230792A1
公开(公告)日：2023-07-20
申请号：US18009982
申请日：2021-06-10
发明人： Kenji Osada , Shuya Kataoka
IPC分类号： H01H85/48 , H01H85/175 , H01H85/12 , H01H69/02
CPC分类号： H01H85/48 , H01H85/175 , H01H85/12 , H01H69/02
摘要： Therefore, the invention of the present application provides a fuse in which a position and a posture of a fuse element are easily stabilized and which is easily assembled, and a method for manufacturing the fuse. A fuse including a fuse element having a fusing portion; and a casing accommodating the fusing portion; where the fuse element has a long shape extending in a longitudinal direction of the casing and at least two or more fuse elements are provided; the fuse element has one end portion side coupled to each other by a coupling portion; a first holding portion that holds the fuse element is provided in one opening of the casing; and a locking portion that locks the coupling portion of the fuse element is provided in the first holding portion.
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公开(公告)号：US11270858B2
公开(公告)日：2022-03-08
申请号：US17052115
申请日：2019-04-19
发明人： Takenao Nakatani , Yusuke Kondo
摘要： An electric circuit breaker that prevents damage due to increased internal pressure after an electric circuit is cut off and prevents an arc from leaking to the outside. Such a circuit breaker includes a housing, a cut portion that is arranged in the housing and forms a part of an electric circuit, a cutting member that cuts the cut portion, and a power source arranged on a first end portion side of the housing, the electric circuit breaker including a moving body including the cutting member, in which the housing includes a cylindrical portion capable of moving the moving body between the first end portion and a second end portion on a side opposite to the first end portion, in which the moving body is configured such that the cutting member provided in the moving body cuts a separation piece of the cut portion.
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公开(公告)号：US10269524B2
公开(公告)日：2019-04-23
申请号：US15599825
申请日：2017-05-19
发明人： Fumiyuki Kawase , Manabu Ota
IPC分类号： H01H85/12 , H01H69/02 , H01H85/044 , H01H85/055
摘要： The present invention provides a multiple fuse device that is compatible with various ratings and reduces an increase in manufacturing cost. A multiple fuse device includes an input terminal, an external terminal, a bus bar that includes a circuit portion disposed between the input terminal and the external terminal, and a housing that covers the bus bar. The external terminal includes an integral external terminal integrated with the circuit portion with a fusible portion interposed between the integral external terminal and the circuit portion, and a fuse-side external terminal that pairs up with a fuse connection terminal connected to the circuit portion. The fuse connection terminal and the fuse-side external terminal provided in a pair hold a fuse exteriorly in a removable manner, the fuse having a fusible portion connected between the fuse connection terminal and the fuse-side external terminal.
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公开(公告)号：US09754754B2
公开(公告)日：2017-09-05
申请号：US14781478
申请日：2014-03-25
IPC分类号： H01H85/08 , H01H1/58 , H01H85/12 , H01H85/10 , H01H85/153 , H01H85/055
CPC分类号： H01H85/08 , H01H1/58 , H01H85/10 , H01H85/12 , H01H85/153 , H01H2085/0555
摘要： The invention in this application aims to provide a multipolar fusible link in which its lateral width can decrease while its entire height does not increase. A multipolar fusible link (100) includes: an input terminal (110); a bus bar (120) through which an electric current input from the input terminal (110) flows; and a plurality of terminals (140) connected to the bus bar (120) via fusible sections (130). By changing a shape of a lower edge (122) of the bus bar (120) to which the fusible sections (130) are connected, a width between the lower edge (122) and an upper edge (121) positioned opposite the lower edge (122) is changed in accordance with the fusible sections (130) connected to the lower edge (122). In addition, shapes of the fusible sections (130) connected to the lower edge (122) are changed so that their lateral widths decrease.
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公开(公告)号：US09728365B2
公开(公告)日：2017-08-08
申请号：US14511554
申请日：2014-10-10
发明人： Daiji Kondo , Masahiro Kimura
IPC分类号： H01H85/175 , H01H85/143 , H01H85/20
CPC分类号： H01H85/175 , H01H85/2015 , H01H2085/208
摘要： Disclosed are a fuse, a fuse box, and a fuse device capable of preventing insertion of wrong products into the box or device and persistent electric arc. In certain aspects, the fuse includes a pair of electro-conductive terminals, a fuse element having a fusion portion provided between the electro-conductive terminals, and an insulating housing mounted so as to cover at least a part of the fusion portion and the electro-conductive terminals, wherein a notch is provided on a lower-end side of the insulating housing, the notch is located between the pair of electro-conductive terminals and at a position that does not interfere with the shape of the fusion portion provided between the pair of electro-conductive terminals, and the notch is formed in a manner that a protrusion provided in a fuse box for housing the fuse can be fitted therein.
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公开(公告)号：US09613775B2
公开(公告)日：2017-04-04
申请号：US14762726
申请日：2014-01-29
发明人： Masashi Ebi , Daiji Kondo
IPC分类号： H01H85/08 , H01H85/041 , H01H85/10 , H01H85/11 , H01H85/147
CPC分类号： H01H85/08 , H01H85/041 , H01H85/0417 , H01H85/10 , H01H85/11 , H01H85/147
摘要： Disclosed is a highly durable blade fuse for which a fused site in a narrow section and the rated current are determined in conformity with its design and the temperature of which does not increase greatly when a current flows through it. A blade fuse according to the present invention includes terminal sections (A, B) and a connection section (1), which are made of the same metal base material that is zinc or a zinc alloy. Furthermore, a low-melting-point metal piece (3), made of tin, which has an outer size identical or similar to a width of the connection section (1) is melted and stuck on at least one surface of the connection section (1) outside the fused section (2), and is positioned to partially traverse an edge of the fused section (2) or not to traverse the edge but to be adjacent to the edge.
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