CN104183991A - 内置铁氧体磁芯的连接器 - Google Patents
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Abstract
本发明提供一种内置铁氧体磁芯的连接器,防止了连接器壳体的强度降低。内置铁氧体磁芯的连接器具备:铁氧体磁芯,具有多个贯通孔;端子配件,插通于各贯通孔,并且形成有作为输入输出部的多根翼片端子部和将各翼片端子部的端部彼此连结的基部;以及连接器壳体,以包围铁氧体磁芯和端子配件的方式成型,能够与配对侧连接器壳体嵌合,铁氧体磁芯形成为具有长边部和短边部,位于铁氧体磁芯的两个短边部的各侧面在与连接器壳体的相对面之间留有间隙而与所述相对面分离。
Description
技术领域
本发明涉及内置铁氧体磁芯的连接器。
背景技术
在连接器中,通过CAN(Control Area Network,控制局域网)通信控制在机动车中搭载的电子元件,为了除去对信号传送产生恶劣影响的噪声电流,已知在向嵌合方向突出的母线端子嵌入块状的铁氧体磁芯的结构。
另外,将铁氧体磁芯与母线端子一起通过嵌件成型埋设在合成树脂制的连接器壳体内而形成连接器时,存在着因树脂固化时的收缩力导致的压缩应力使铁氧体磁芯受损的危险。因此,在下述专利文献1中,公开了下述技术:在连接器壳体形成开口部,使压缩应力作用最大的铁氧体磁芯的长度方向的两端面从开口部露出,从而防止压缩应力导致的铁氧体磁芯的损伤。
专利文献1:日本专利第5172616号公报
然而,如上所述地在连接器壳体形成开口部的话,存在着连接器壳体自身的强度降低的问题。
发明内容
本发明基于以上情况而完成,其目的在于提供一种连接器壳体的强度较高的内置铁氧体磁芯的连接器。
本发明的内置铁氧体磁芯的连接器具备:铁氧体磁芯,具有多个贯通孔;端子配件,插通于各所述贯通孔,并且形成有作为输入输出部的多根翼片端子部和将各翼片端子部的端部彼此连结的基部;以及连接器壳体,以包围所述铁氧体磁芯和所述端子配件的方式成型,能够与配对侧连接器壳体嵌合,所述内置铁氧体磁芯的连接器的特征在于,所述铁氧体磁芯形成为具有长边部和短边部,位于所述铁氧体磁芯的两个所述短边部的各侧面在与所述连接器壳体的相对面之间留有间隙而与所述相对面分离。
根据本发明,位于铁氧体磁芯的短边部的侧面和连接器壳体的相对面之间通过两者之间留有的间隙而分离,因此能够避免连接器壳体成型后的收缩力作用于铁氧体磁芯。通过采用这样的方案,不必像以往那样在连接器壳体设置开口部即可,因此也不必担心连接器壳体的强度降低。
附图说明
图1是实施例1的母线端子和铁氧体磁芯的示意图。
图2是内置该铁氧体磁芯的连接器的侧剖视图。
图3是内置该铁氧体磁芯的连接器的俯视剖视图。
图4是内置该铁氧体磁芯的连接器的主视图。
图5是内置该铁氧体磁芯的连接器的嵌件成型时的示意图。
标号说明
10:内置铁氧体磁芯的连接器;
11:连接器壳体;
13:防脱壁;
20:母线端子(端子配件);
22A:翼片端子部(输入部);
22B:翼片端子部(输出部);
23:基部;
30A、30B:第一、第二铁氧体磁芯(铁氧体磁芯);
30H:贯通孔;
LL:长边部;
SL:短边部;
M:侧面;
S:间隙。
具体实施方式
对本发明的优选实施方式进行说明。
(1)优选的是,本发明的内置铁氧体磁芯的连接器构成为,所述铁氧体磁芯相对于所述各翼片端子部从前端侧被插通,并且在所述铁氧体磁芯的前表面设有与所述连接器壳体一体形成的防脱壁。
根据该结构,在铁氧体磁芯的前表面设有与连接器壳体一体形成的防脱壁,因此能够可靠地防止铁氧体磁芯从端子配件脱出。
(2)优选的是,本发明的内置铁氧体磁芯的连接器构成为,被所述翼片端子部中作为所述输入部的翼片端子部贯通的所述铁氧体磁芯和被所述翼片端子部中作为所述输出部的翼片端子部贯通的所述铁氧体磁芯能够除去的噪声成分的频带不同。
根据该结构,由于在从输入部到输出部的导通路径中经过能够除去的噪声成分的频带不同的铁氧体磁芯,因此提高了内置铁氧体磁芯的连接器的噪声除去特性。
接下来,参照附图对将本发明的内置铁氧体磁芯的连接器具体化了的实施例1进行说明。
<实施例1>
本实施例的内置铁氧体磁芯的连接器10(在以下,简称为连接器10)构成为具备母线端子(端子配件)20、噪声除去用的两种铁氧体磁芯30A、30B和连接器壳体11。另外,在以下的说明中,对于前后方向,以图3的右侧作为前侧、左侧作为后侧。
连接器壳体11为合成树脂制,如图3所示,其具备在前方具有开口部11H的方筒状的罩部12,在该罩部12内通过嵌件成型一体地组装有电路单元40。电路单元40由母线端子20和铁氧体磁芯30A、30B构成,详情将后述。
母线端子20通过对铜合金等金属导电性板材实施冲裁、弯曲加工等而成型,其由呈翼片(tab)状的8根翼片端子部22A、22B和将这些端部连结的基部23构成。如图1、图4所示,位于上层的4根翼片端子部22A为正极侧端子(输入部)23A,位于下层的4根翼片端子部22B为负极侧端子(输出部)23B。如图1所示,各翼片端子部22A、22B从基部23在长度方向上等间隔地延伸形成。并且,8根翼片端子部22A、22B共同与未图示的相对方连接器的阴端子配件电连接。
铁氧体磁芯30A、30B由对FM频带的噪声成分的除去效果较高的第一铁氧体磁芯30A和对AM频带的噪声成分的除去效果较高的第二铁氧体磁芯30B这两种构成。第一铁氧体磁芯30A的材质采用Ni-Zn类铁氧体,第二铁氧体磁芯30B的材质采用Mn-Zn铁氧体材料。而且,如图4所示,第一、第二铁氧体磁芯30A、30B均具有短边部SL和长边部LL,且形成为大致块状。并且,翼片端子部22A、22B以能够稍稍压入地贯通的方式开口有4条贯通孔30H。而且,在第一、第二铁氧体磁芯30A、30B的整个表面薄薄地涂敷有未图示的树脂被覆层,防止在安装于翼片端子部22A、22B时铁氧体磁芯30A、30B损伤。
如图5所示,本实施例中的成型用金属模50由能够开闭的第一模51和第二模52构成。金属模50形成为:在将电路单元40置于金属模50内的状态下合模后,在电路单元40周围留有能够使连接器壳体11成型的成型空间C。
如图5所示,在第一模51凹陷形成有形成连接器壳体11的外表面的第一成型部51A。在第二模52突出形成有第二成型部52A,所述第二成型部52A在合模时进入到第一成型部51A的内侧而能够使罩部12在与第一成型部51A之间成型。在第二成型部52A,在多个部位穿孔形成用于在合模状态下避免与母线端子20的各翼片端子部22A、22B的干涉的退避孔53。第二成型部52A的前表面被设定为在合模状态下与铁氧体磁芯30A、30B的前表面之间留有预定间隙C2,该间隙C2用于使相对于铁氧体磁芯30A、30B的防脱壁13成型。
在第二成型部52A中,从与铁氧体磁芯30A、30B的两个短边部SL对应的一侧的两端部突出有一对成型突部54。两个成型突部54以大致紧贴状态进行覆盖在合模时相对于铁氧体磁芯30A、30B的两个短边部SL的两个侧面M。通过这样,在连接器壳体11成型后,如图3所示,在铁氧体磁芯30A、30B的两个短边部SL的两侧面M和罩部12的内面(相对面)之间留有间隙S。然而,在第二成型部52A中,在与铁氧体磁芯30A、30B的两个长边部LL对应的一侧的两端部未设有如上所述的成型突部54。因此,在连接器壳体11成型后,如图2、图4所示,位于铁氧体磁芯30A、30B的两个长边部LL的两个侧面被以与罩部12的内表面和防脱壁13连续的状态成型的保护壁14覆盖。
接着,对连接器10的组装步骤的一例进行说明。首先,使母线端子20的正极侧端子22A(上层)侧的4根翼片端子部23A通过第一铁氧体磁芯30A的4条贯通孔30H,嵌入至第一铁氧体磁芯30A与基部23抵接为止。而且,以同样的步骤,在负极侧端子22B(下层)侧也使第二铁氧体磁芯30B嵌入4条翼片端子部23B直到与基板23抵接为止,从而组装成电路单元40。
接着,在第一模51和第二模52之间放置有电路单元40的状态下进行合模,形成连接器壳体11的成型空间C。将熔融的树脂从在第一模51设置的浇口G注入。接着,在树脂填充了整个成型空间C后,停止树脂的注入。在树脂的固化完成后,通过嵌件成型而形成连接器壳体11,连接器10的组装完成。
如图5所示,设于第二模52的两个成型突部54以大致紧贴状态覆盖铁氧体磁芯30A、30B的两个短边部SL的两个侧面M。因而,在铁氧体磁芯30A、30B的两个短边部SL的两个侧面M和罩部12的内表面之间未流入树脂而形成间隙S。另一方面,在第二成型部52A的型面与铁氧体磁芯30A、30B的前表面之间的间隙C2流入树脂,而在铁氧体磁芯30A、30B的前表面形成防脱壁13。并且,位于铁氧体磁芯30A、30B的两个长边部LL的两个侧面被以与罩部12的内表面和防脱壁13连续的状态成型的保护壁14覆盖。
对实施例1的作用进行说明,通过输入到连接器10的正极侧端子23A的包括噪声成分的信号电流经过第一铁氧体磁芯30A和第二铁氧体磁芯30B,从而除去FM和AM频带中的噪声电流。并且,从负极侧端子23B仅输出清晰的信号电流。
接下来,对实施例1的效果进行说明。
根据本实施例,位于铁氧体磁芯30A、30B的短边部SL的两个侧面M和连接器壳体11的罩部12内表面之间通过在两者之间留有的间隙S而分离,因此能够避免连接器壳体11成型后的收缩力作用于铁氧体磁芯30A、30B的情况。通过采用这样的方案,不必像以往那样在连接器壳体11设置开口部即可,因此也不必担心连接器壳体11的强度降低。
在铁氧体磁芯30A、30B的前表面设有与连接器壳体11一体形成的防脱壁13,因此能够可靠地防止铁氧体磁芯30A、30B从母线端子20脱出。
而且,由于在从作为输入部的正极侧端子22A到作为输出部的负极侧端子22B的导通路径中经过能够除去的噪声成分的频带不同的两种铁氧体磁芯(第一、第二铁氧体磁芯)30A、30B,因此提高了连接器10的噪声除去特性。
以上,根据本发明,能够提供一种内置铁氧体磁芯的连接器10,既防止了铁氧体磁芯30A、30B的损伤,又不会损害到连接器壳体1的强度。
<其他实施例>
本发明并不限定于根据上述记载以及附图说明的实施例,例如以下实施例也包含在本发明的技术范围内。
(1)在上述实施例中,将铁氧体磁芯形成为块状,但不限于此,也可以是环状。
(2)在上述实施例中,作为铁氧体磁芯采用了以Ni-Zn类铁氧体材料制造的第一铁氧体磁芯和以Mn-Zn类铁氧体材料制造的第二铁氧体磁芯这两种,但不限于此,也可以采用两种中的任意一种。
(3)在上述实施例中,铁氧体磁芯采用了第一、第二铁氧体磁芯这两种,但不限于此,也可以采用能够除去噪声的频带不同的三种以上的铁氧体磁芯。
(4)在上述实施例中,使端子配件的翼片端子部的极数为8,但不限于此,并不限制端子部的极数。
(5)在上述实施例中,将翼片端子部分上下两层进行设置,但不限于此,也可以是设为一层或三层以上。
(6)在上述实施例中,在上下层的翼片端子部嵌入铁氧体磁芯,但不限于此,也可以仅在上层或下层嵌入铁氧体磁芯。
(7)在上述实施例中,铁氧体磁芯采用Ni-Zn类铁氧体材料和Mn-Zn类铁氧体材料,但不限于此,并不限制铁氧体磁芯的材料。而且,即使是相同材料,也可以不采用陶瓷状而采用晶体状的纳米结晶材料。
(8)在上述实施例中,将以输入输出部为一对的翼片端子部的各对之间通过基部连结起来,但不限于此,也可以不对各对之间进行连结,而形成为仅将输入输出部之间通过基部连结起来的形态。在该情况下,翼片端子部的各对之间电分离。
Claims (3)
1.一种内置铁氧体磁芯的连接器,具备:
铁氧体磁芯,具有多个贯通孔;
端子配件,插通于各所述贯通孔,并且形成有作为输入输出部的多根翼片端子部和将各翼片端子部的端部彼此连结的基部;以及
连接器壳体,以包围所述铁氧体磁芯和所述端子配件的方式成型,能够与配对侧连接器壳体嵌合,
所述内置铁氧体磁芯的连接器的特征在于,
所述铁氧体磁芯形成为具有长边部和短边部,位于所述铁氧体磁芯的两个所述短边部的各侧面在与所述连接器壳体的相对面之间留有间隙而与所述相对面分离。
2.根据权利要求1所述的内置铁氧体磁芯的连接器,其特征在于,
所述铁氧体磁芯相对于所述各翼片端子部从前端侧被插通,并且在所述铁氧体磁芯的前表面设有与所述连接器壳体一体形成的防脱壁。
3.根据权利要求1或2所述的内置铁氧体磁芯的连接器,其特征在于,
被所述翼片端子部中作为所述输入部的翼片端子部贯通的所述铁氧体磁芯和被所述翼片端子部中作为所述输出部的翼片端子部贯通的所述铁氧体磁芯能够除去的噪声成分的频带不同。
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