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1. 发明授权

US10396543B2 Protection device 有权
公开(公告)号：US10396543B2
公开(公告)日：2019-08-27
申请号：US15023977
申请日：2014-09-24
申请人： LITTELFUSE JAPAN G.K.
发明人： Arata Tanaka , Masaaki Iwai , Tsuyoshi Takizawa
IPC分类号： H02H3/08 , H02H9/00 , H01C3/14 , H02H9/02
摘要： The present invention provides a protection device that can more surely protect an electronic or an electric apparatus even when an inrush current value is large and its magnitude has large dispersion, and that has a recovery property. The protection device of the present invention includes a PTC component; a resistive component; and a first terminal and a second terminal, wherein the first terminal, the PTC component, the resistive component, and the second terminal are electrically connected in series in this order.

2. 发明授权

US10283295B2 Protection device 有权
公开(公告)号：US10283295B2
公开(公告)日：2019-05-07
申请号：US14785316
申请日：2014-04-17
申请人： Littelfuse Japan G.K.
发明人： Hirofumi Mochizuki , Arata Tanaka
IPC分类号： H01H37/52 , H01H37/34 , H01H37/46 , H01H37/54
摘要： The present invention provides a protection device including a bimetal component and a PTC component. This protection device includes a resin base, a first terminal, a second terminal, a PTC component, a bimetal component, an arm, an upper plate and a resin cover. A portion of the first terminal configures a first electrode, and a portion of a second terminal configures the second electrode, and the first electrode and the second electrode are exposed outward at the bottom surface of the resin base. In a normal state, the first terminal, the arm and the second terminal are electrically connected in series. When the bimetal component is activated, the first terminal and the arm become electrically cut off while the first terminal, the PTC component, the bimetal component, the arm and the second terminal are electrically connected in series in the mentioned order.

3. 发明申请

US20180233310A1 THERMOSENSITIVE ACTUATING UNIT 审中-公开
公开(公告)号：US20180233310A1
公开(公告)日：2018-08-16
申请号：US15896558
申请日：2018-02-14
申请人： Littelfuse Japan G.K.
发明人： Arata Tanaka
IPC分类号： H01H37/52 , H02H5/04 , B32B15/01 , C22C22/00 , C22C19/00 , C25D5/12 , C25D5/34
CPC分类号： H01H37/52 , B32B15/01 , C22C19/005 , C22C22/00 , C25D3/12 , C25D5/12 , C25D5/14 , C25D5/34 , H01H37/5427 , H01H2037/526 , H01H2037/528 , H01H2037/5463 , H02H5/04
摘要： A thermosensitive actuating unit which uses an alloy containing maganese and of which the contained maganese is less likely to be corroded. Provided is a thermosensitive actuating unit which is constituted to have a thermosensitive actuating element which has a manganese surface and a plating layer which covers the manganese surface.

4. 发明申请

US20170278600A1 PTC DEVICE AND SECONDARY BATTERY HAVING SAME 审中-公开
公开(公告)号：US20170278600A1
公开(公告)日：2017-09-28
申请号：US15620133
申请日：2017-06-12
申请人： Littelfuse Japan G.K. , FDK Twicell Co., Ltd
发明人： Arata Tanaka , Toshikazu Yamaoka , Haruhisa Miyagi
IPC分类号： H01C7/02 , H01C1/028 , H01C1/14 , H01M10/42 , H01M2/34
CPC分类号： H01C7/02 , H01C1/028 , H01C1/1406 , H01C7/027 , H01G11/18 , H01M2/348 , H01M2200/106
摘要： A PTC device as well as an electrical device such as a battery pack or a dry-cell type secondary cell containing a PTC device and a secondary cell is made more compact. The PTC device includes (1) a PTC component including a laminar polymer PTC element having an electrically conductive filler and a polymer material, and a metal electrode disposed on a surface of each side of the polymer PTC element; and (2) a lead positioned at least in part on the metal electrode of the PTC component, and connected to the metal electrode by an electrically conductive material An exposed part of the electrically conductive material is covered by a protective member including a polypropylene resin, a nylon resin or an epoxy resin.

5. 发明授权

US09728764B2 Alkaline storage battery 有权
公开(公告)号：US09728764B2
公开(公告)日：2017-08-08
申请号：US14420629
申请日：2013-08-07
申请人： FDK CORPORATION , LITTELFUSE JAPAN G.K.
发明人： Tatsuya Nagai , Koji Izumi
IPC分类号： H01M2/34 , H01M2/02 , H01M2/08 , H01M10/30 , H01M2/26 , H01M10/28
CPC分类号： H01M2/348 , H01M2/022 , H01M2/08 , H01M2/263 , H01M10/286 , H01M10/30 , H01M2200/106 , H01M2220/30 , Y02E60/124 , Y02P70/54
摘要： The present invention provides a heat suppressing alkaline storage battery including a positive electrode lead having a downsized portion that incorporates a PTC thermistor. A battery includes a positive electrode lead having a first lead half body, a second lead half body, and a PTC thermistor, the first and second lead half bodies overlap end portions formed in a portion where the first and second lead half bodies overlap with each other, the overlap end portions being larger than the PTC thermistor as viewed from a plane and being in contact with the PTC thermistor, the PTC thermistor is fitted in a fitting recessed portion formed in the overlap end portion of the first lead half body, and an exposed portion of the PTC thermistor is covered with a protective material.

6. 发明申请

US20160329136A1 PTC DEVICE 有权
标题翻译： PTC设备
公开(公告)号：US20160329136A1
公开(公告)日：2016-11-10
申请号：US15212911
申请日：2016-07-18
申请人： LITTELFUSE JAPAN G.K.
发明人： Hiroyuki Koyama
IPC分类号： H01C7/02 , H01C7/13 , H01C1/14
CPC分类号： H01C7/02 , H01C1/14 , H01C1/1406 , H01C1/142 , H01C17/281 , H01M2200/106 , H02H3/085
摘要： The present invention relates to a new PTC device having a configuration with which protrusion of solder paste and/or an excess portion of epoxy resin do not adversely affect a jig. Such PTC device 30 comprises a PTC member 32 and leads 34 and 36 electrically connected to both sides of the PTC member the PTC member comprises a PTC element 38 and metal electrodes 40 and 42 placed on both sides of the PTC element respectively, each lead is electrically connected to the metal electrode respectively via an electrically conductive connection portion 50, and at least one 36 of the leads has a concave portion which is defined with a bottom portion 44 located adjacently to the metal electrode of the PTC member and a wall portion 46 surrounding the electrically conductive connection portion which connects the leads to the metal electrode.
摘要翻译：本发明涉及一种新的PTC器件，其具有焊膏的突起和/或环氧树脂的过量部分不会对夹具产生不利影响的构造。这种PTC装置30包括PTC构件32，以及电连接到PTC构件的两侧的引线34和36，PTC构件包括分别放置在PTC元件两侧的PTC元件38和金属电极40和42，每个导线是通过导电连接部分50电连接到金属电极，并且引线中的至少一个36具有凹陷部分，该凹部限定有与PTC部件的金属电极相邻的底部44和壁部分46 围绕将引线连接到金属电极的导电连接部分。

7. 发明授权

US10090509B2 Protection element 有权
公开(公告)号：US10090509B2
公开(公告)日：2018-10-02
申请号：US14424398
申请日：2013-08-30
申请人： Littelfuse Japan G.K.
发明人： Arata Tanaka , Hisashi Usui , Keiichiro Nomura
IPC分类号： H01H85/08 , H01M2/34 , H01M10/0525
摘要： The present invention provides a protection device which includes: a PTC laminar element which is formed of an insulation resin and has at least one throughhole; electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element, and a fuse layer which is positioned on a side surface defining at least one of said at least one throughhole and electrically connects the electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element. The protection device of the present invention allows a larger amount of a current to flow therethrough and can provide a protection from an excessive current.

8. 发明申请

US20180082769A1 Protective Element 审中-公开
公开(公告)号：US20180082769A1
公开(公告)日：2018-03-22
申请号：US15565286
申请日：2016-04-22
申请人： Littelfuse Japan G.K.
发明人： Masaaki IWAI , Tsuyoshi TAKIZAWA
IPC分类号： H01C7/02 , H01C1/01 , H01C7/04 , H01C7/10 , H01M2/30
CPC分类号： H01C7/02 , H01C1/01 , H01C1/012 , H01C1/1406 , H01C1/142 , H01C7/04 , H01C7/10 , H01M2/30 , H01M2200/106
摘要： The present invention relates to a protective element which comprises a layered PTC element having a first main surface and a second main surface, a first electrode that is positioned on the first main surface of the PTC element and a second electrode that is positioned on the second main surface of the PTC element, and the protective element characterized in that at least a portion of the first electrode and at least a portion of the second electrode are positioned so as to oppose each other with the PTC element being interposed therebetween, and a portion of the first main surface is exposed.

9. 发明授权

US09831054B2 Insulated thermal cut-off device 有权
公开(公告)号：US09831054B2
公开(公告)日：2017-11-28
申请号：US14228196
申请日：2014-03-27
申请人： Littelfuse, Inc. , Littelfuse Japan G.K.
发明人： Jianhua Chen , Weiqing Guo , Minh V. Ngo , Robert D Hilty , Arata Tanaka
IPC分类号： H01H37/52 , H01H9/04 , H01H37/54
CPC分类号： H01H37/52 , H01H9/04 , H01H37/54 , H01H37/5427 , H01H2037/528
摘要： A thermal cut-off device includes a plastic base, two electrodes, a temperature sensing element, and a plastic cover that fits over the base. The temperature sensing element is curved downward, and may be a bimetal or a trimetal. When the device is subject to an over-temperature condition, the orientation of the curve flips such that the temperature sensing element is then curved upward. When the temperature sensing element is curved upward, it lifts an arm of one of the electrodes, which severs the electrical connection between the electrodes. In this manner the device shuts off during an over-temperature condition in order to protect the circuit in which the device is installed. To prevent corrosion of the temperature sensing element, a first moisture insulation layer is applied to the outer surface of the thermal cut-off device. The moisture insulation layer may be an epoxy adhesive or a UV/visible light-cured adhesive or light/heat cured adhesive. In some embodiments, a second moisture insulation layer is formed on the surface of the temperature sensing element.

10. 发明申请

US20230097068A1 PROTECTION DEVICE 有权
公开(公告)号：US20230097068A1
公开(公告)日：2023-03-30
申请号：US17950555
申请日：2022-09-22
申请人： Littelfuse, Japan G.K.
发明人： Toshikazu YAMAOKA , Hajime TAKAHASHI , Katsuaki SUZUKI
IPC分类号： H01H71/16 , H01H71/08
摘要： A protection device includes a movable arm, a fixed terminal, and a bimetallic member, and a casing that accommodates them, the bimetallic member is located either above or below the movable arm, one end of the bimetallic member applies force to one end of the movable arm, thereby holding one end of the movable arm and the fixed terminal in contact.

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