公开(公告)号：US20180120359A1

公开(公告)日：2018-05-03

申请号：US15568910

申请日：2016-04-21

Applicant: KOA CORPORATION

Inventor： Keishi Nakamura ,  Koichi Minowa

IPC: G01R19/00 ,  H01C1/14 ,  H01R4/34

CPC classification number: G01R19/0092 ,  G01R1/203 ,  H01C1/14 ,  H01C13/00 ,  H01R4/34

Abstract: Provided is a current detection device that enables to eliminate the influence of vibration that is applied to a bus bar, which is configured as a shunt resistor and measures current with high accuracy and high reliability. The current detection device is provided with a first wiring member and a second wiring member consisting of a conductive metal material, and a resistor body consisting of a metal material having a lower temperature coefficient of resistance than those wiring members and is joined between the first wiring member and the second wiring member, wherein a connection portion for making a connection to another wiring member or device is formed at an end of the first wiring member and second wiring member, the end being an opposite side from a joint with the resistor body, and a fixing member is provided between the connection portion and the joint with the resistor body.

公开(公告)号：US20170330656A1

公开(公告)日：2017-11-16

申请号：US15529235

申请日：2015-11-16

Applicant: KOA CORPORATION

Inventor： Tomohito Imai ,  Shun Kato ,  Yoshihisa Nakaji ,  Yoichi Sakai

IPC: H01C3/00 ,  H01C1/012 ,  H01C1/148 ,  H01C17/04

CPC classification number: H01C3/00 ,  H01C1/012 ,  H01C1/148 ,  H01C3/14 ,  H01C17/04

Abstract: To provide a wire-wound resistor provided with high reliability and that retains the basic functionality of the wire-wound resistor, and a method for manufacturing the same. A wire-wound resistor in which a resistor wire is wound onto an external periphery of a core (11) obtained by bundling fibrous insulators, and a connection terminal (13) is attached to both ends of the core (11) and connected to the resistor wire (12a), wherein the core (11) is impregnated with a binder in the portion (11a) in the vicinity of the external periphery. The binder (1) is preferably not included in a center portion (11b) of the core (11).

公开(公告)号：US20170316853A1

公开(公告)日：2017-11-02

申请号：US15523019

申请日：2015-08-25

Applicant: KOA Corporation

Inventor： Kentaro MATSUMOTO

IPC: H01C1/142 ,  H01C17/242 ,  H01C17/00 ,  H01C17/28 ,  H01C1/012

CPC classification number: H01C1/142 ,  H01C1/012 ,  H01C1/032 ,  H01C1/148 ,  H01C7/18 ,  H01C17/006 ,  H01C17/242 ,  H01C17/281

Abstract: To provide a chip resistor in which a resistive element can be surely protected from an external environment and which is also excellent in corrosion resistance, a chip resistor 1 is configured to include an insulating substrate 2, a pair of front electrode 3 provided on opposite end portions of a front surface of the insulating substrate 2, a pair of back electrodes 7 provided on opposite end portions of a back surface of the insulating substrate 2, a resistive element 4 provided to extend onto the two front electrodes 3, a first insulating layer 5 covering the resistive element 4, a second insulating layer 6 made of a resin material to cover the first insulating layer 5, end surface electrodes 8 establishing electrical continuity between the front electrodes 3 and the back electrodes 7, plating layers 9 covering the end surface electrodes 8, etc. Rough surface portions 6a made rougher in surface roughness than any other portion of the second insulating layer 6 are formed at opposite end portions of the second insulating layer 6. End portions of the end surface electrodes 8 and the plating layers 9 are brought into tight contact with the rough surface portions 6a respectively.

公开(公告)号：US20170309378A1

公开(公告)日：2017-10-26

申请号：US15513725

申请日：2015-07-22

Applicant: KOA Corporation

Inventor： Kentaro MATSUMOTO

IPC: H01C7/00 ,  H01C17/065 ,  H01C7/20 ,  H01C17/28 ,  H01C1/142

CPC classification number: H01C7/003 ,  H01C1/142 ,  H01C7/20 ,  H01C17/06513 ,  H01C17/281 ,  H01C17/283

Abstract: The invention is to provide a chip resistor suitable for lowering an initial resistance value. A chip resistor 1 according to the present invention is provided with: an insulating substrate 2; a pair of front electrodes 3 which are provided on a front surface of the insulating substrate 2 so as to face each other with a predetermined interval therebetween; a resistive element 4 which is provided so as to bridge the front electrodes 3; a pair of auxiliary electrodes 5 which are provided so as to cover the front electrodes 3 and overlap end portions of the resistive element 4; and the like. The chip resistor 1 is configured such that: the front electrodes 3 are formed of a material which contains 1 to 5 wt % Pd and the balance Ag; and the auxiliary electrodes 5 are formed of a material which contains 15 to 30 wt % Pd and a metal material (e.g. Au) lower in resistivity than Pd and the balance Ag.

公开(公告)号：US09779904B2

公开(公告)日：2017-10-03

申请号：US14739119

申请日：2015-06-15

Applicant: KOA CORPORATION

Inventor： Takahiro Ishikawa ,  Hiroshi Ichikawa ,  Chika Ito

IPC: H01H85/04 ,  H01H85/20 ,  H01H85/06 ,  H01H85/046 ,  H01H69/02 ,  H01H85/18 ,  H01H85/041

CPC classification number: H01H85/06 ,  H01H69/022 ,  H01H85/046 ,  H01H85/185 ,  H01H2085/0414

Abstract: A chip type fuse excellent in resistance to climate conditions, where the fuse is able to operate stably under high temperature and high humidity environments. The fuse includes an insulative substrate; an under-glass layer formed on the insulative substrate; a fuse element formed on the under-glass layer; a pair of electrodes formed at both end sides of the fuse element; and an over-glass layer covering at least a fusing section of the fuse element; wherein the fuse element includes a layer where a first metal layer and a second metal layer are piled up, and a barrier layer consisting of a third metal layer, which covers the first metal layer and the second metal layer with a width that is wider than the width of the first metal layer and the second metal layer. The third metal layer overwraps the second metal layer and the first metal layer.

公开(公告)号：US20170003322A1

公开(公告)日：2017-01-05

申请号：US15113606

申请日：2015-01-30

Applicant: KOA CORPORATION

Inventor： Keishi Nakamura ,  Kenji Kameko

IPC: G01R15/14

CPC classification number: G01R15/146 ,  G01R1/203 ,  G01R19/0084 ,  G01R19/0092 ,  G01R35/005

Abstract: To provide a shunt resistor and a current detection device including the shunt resistor, to which a busbar, a board, and the like can be easily fixed with sufficient strength wherein only minimum processing of electrodes is required. Screwing members (bolt (14) and nut (15)) that are separate members from electrodes (12) of the resistor (10), are fixed on the electrodes (12). The current detection device includes the shunt resistor (10), which has at least a pair of electrodes (12). One screwing member (14) fixed beforehand on at least one electrode (12) is screw fastened with the other screwing member (15) while disposing a prescribed intervening member (20) between the one screwing member and the other screwing member. Here, the prescribed intervening member (20) includes a board mounting a current detection circuit thereon and/or busbars.

Abstract translation: 为了提供一种分流电阻器和包括分流电阻器的电流检测装置，可以以足够的强度容易地固定母线，电路板等，从而仅需要电极的最小处理。 与电阻器（10）的电极（12）成为分离的构件的螺钉构件（螺栓（14）和螺母（15））固定在电极（12）上。 电流检测装置包括分流电阻器（10），其具有至少一对电极（12）。 预先固定在至少一个电极（12）上的一个螺纹构件（14）与另一个螺纹构件（15）螺钉紧固，同时在一个螺纹构件和另一个螺纹构件之间设置规定的中间构件（20）。 这里，规定的中间构件（20）包括在其上安装电流检测电路的板和/或母线。

公开(公告)号：US20150371804A1

公开(公告)日：2015-12-24

申请号：US14739119

申请日：2015-06-15

Applicant: KOA CORPORATION

Inventor： Takahiro Ishikawa ,  Hiroshi Ichikawa ,  Chika Ito

IPC: H01H85/20 ,  H01H85/04

CPC classification number: H01H85/06 ,  H01H69/022 ,  H01H85/046 ,  H01H85/185 ,  H01H2085/0414

Abstract: Provided is a chip type fuse excellent in resistance to climatic condition, where the fuse is able to operate stably under high temperature and high humidity environments. The fuse includes an insulative substrate; an under-glass layer formed on the insulative substrate; a fuse element formed on the under-glass layer; a pair of electrodes formed at both end sides of the fuse element; and an over-glass layer covering at least a fusing section of the fuse element; wherein the fuse element includes a layer where a first metal layer and a second metal layer are piled up, and a barrier layer consisting of a third metal layer, which covers the first metal layer and the second metal layer with width that is wider than the width of the first metal layer and the second metal layer. The third metal layer overwraps the second metal layer intervening and the first metal layer.

Abstract translation: 提供了耐高温，耐高温环境下保险丝稳定运行的耐气候条件的芯片型保险丝。 保险丝包括绝缘衬底; 在绝缘基板上形成的玻璃下层; 形成在下玻璃层上的熔丝元件; 形成在熔丝元件的两端侧的一对电极; 以及覆盖所述保险丝元件的至少熔断部的过玻璃层; 其中所述熔丝元件包括堆叠第一金属层和第二金属层的层，以及由覆盖所述第一金属层和所述第二金属层的宽度大于所述第二金属层的第三金属层构成的阻挡层 第一金属层和第二金属层的宽度。 第三金属层包覆中间的第二金属层和第一金属层。

公开(公告)号：US20150226768A1

公开(公告)日：2015-08-13

申请号：US14425765

申请日：2013-08-21

Applicant: KOA CORPORATION

Inventor： Keishi Nakamura ,  Koichi Hirasawa

IPC: G01R1/20 ,  G01R19/00

CPC classification number: G01R1/203 ,  G01R19/0092

Abstract: Provided is a resistor for detecting current, which includes a voltage terminal member capable of removing an influence of error voltage, formed by tiny amount of self inductance existing in the resistor. The voltage terminal member includes a resistance body (11); a pair of electrodes (12) fixed to each end of the resistance body; and a pair of voltage terminal members (3) for detecting voltage generated in the resistance body and that are connected to each electrode; wherein the voltage terminal member (3) includes a connecting portion (3b) for connecting to the electrode (12), an extending portion (3c1,3c2) extending from the connecting portion toward the other electrode side; and wherein each end of the extending portion reaches to same plane (X) perpendicular to current path between the electrodes.

Abstract translation: 提供了一种用于检测电流的电阻器，其包括能够消除由电阻器中存在的微量自感所形成的误差电压的影响的电压端子构件。 电压端子构件包括电阻体（11）; 固定在电阻体各端的一对电极（12）; 和一对电压端子部件（3），用于检测电阻体中产生的并连接到每个电极的电压; 其特征在于，所述电压端子部件（3）具有与所述电极（12）连接的连接部（3b），从所述连接部向另一方延伸的延伸部（3c1,3c2） 并且其中所述延伸部分的每个端部到达垂直于所述电极之间的电流路径的相同平面（X）。

公开(公告)号：US20140370754A1

公开(公告)日：2014-12-18

申请号：US14374712

申请日：2013-01-29

Applicant: KOA CORPORATION

Inventor： Kenji Kameko ,  Koichi Hirasawa ,  Yoshinori Aruga

IPC: H01R33/18 ,  H01R13/46

CPC classification number: H01R33/18 ,  G01R1/203 ,  H01C1/14 ,  H01R13/46

Abstract: Provided is a connection structure for a detection terminal of shunt resistor that allows a lead wire, that is to be connected to an electrode of the shunt resistor and is for detecting electrical current, to be easily and compactly connected to the electrode within a narrow and small module. A terminal connection structure for a resistor, which connects a detection terminal to an electrode, comprises a shunt resistor (13) that has a pair of electrodes (12) at both ends of a resistor body (11); a connector base (14) formed of insulating material; and an electrically conductive section (15a) formed on the connector base (14); wherein the connector base (14) is fit onto the shunt resistor (13) such that the electrically conductive section (15a) is electrically connected to the electrodes (12). The connector base (14) is provided with a joint section (C) that can be fit onto the resistor body (11). The resistor body (11) and the electrode (12) is provided with a level difference and the connector base (14) is fit into between the electrodes (12,12).

Abstract translation: 提供了一种用于分流电阻器的检测端子的连接结构，其允许将连接到分流电阻器的电极并用于检测电流的引线容易且紧凑地连接到窄电极内的电极，并且 小模块 用于将检测端子连接到电极的电阻器的端子连接结构包括在电阻体（11）的两端具有一对电极（12）的分流电阻（13）。 由绝缘材料形成的连接器基座（14） 和形成在所述连接器基座（14）上的导电部（15a）。 其中所述连接器基座（14）装配到所述分流电阻器（13）上，使得所述导电部分（15a）电连接到所述电极（12）。 连接器基座（14）设置有能够配合在电阻体（11）上的接合部（C）。 电阻体（11）和电极（12）具有电平差，并且连接器基座（14）装配在电极（12,12）之间。

公开(公告)号：US20040196139A1

公开(公告)日：2004-10-07

申请号：US10823666

申请日：2004-04-14

Applicant: KOA CORPORATION

Inventor： Keishi Nakamura ,  Mikio Tatuguchi

IPC: H01C007/10

CPC classification number: H01C1/144 ,  H01C17/242

Abstract: The low resistance value resistor 11 has two electrodes 12,13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed on a surface of each electrode comprised by the metal strip. Thus, sufficient bonding strength and superior current distribution in the resistor body is obtained. Further, a portion of the resistor body is trimmed by removing a portion of the body material along a direction of current flow between the electrodes to adjust a resistance value. Thus, a precise resistor value and superior characteristics of temperature coefficient of resistance (TCR) can be obtained.

Abstract translation: 低电阻值电阻器11具有两个具有高导电性的金属条的电极12,13。 通过轧制和/或热扩散粘合将金属条固定在电阻体上。 在由金属带构成的每个电极的表面上形成熔融焊料层。 因此，获得了电阻体中充分的接合强度和优异的电流分布。 此外，通过沿着电极之间的电流流动的方向除去主体材料的一部分来调整电阻体的一部分，以调整电阻值。 因此，可以获得精确的电阻值和电阻温度系数（TCR）的优异特性。