CN107732469A - 装接有端子的电线 - Google Patents

装接有端子的电线 Download PDF

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CN107732469A
CN107732469A CN201710693301.0A CN201710693301A CN107732469A CN 107732469 A CN107732469 A CN 107732469A CN 201710693301 A CN201710693301 A CN 201710693301A CN 107732469 A CN107732469 A CN 107732469A
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electric wire
terminal
terminal member
wire
sacrifice layer
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中田洋人
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Yazaki Corp
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/03Contact members characterised by the material, e.g. plating, or coating materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00Connectors or connections adapted for particular applications
    • H01R2201/26Connectors or connections adapted for particular applications for vehicles

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Abstract

一种装接有端子的电线,包括电线和端子件。电线包括芯线。芯线由铝或铝合金制成,并且由被覆部覆盖。芯线在电线的端部处露出。端子件由铜或铜合金制成,并且连接于电线的端部。具有比铝高的电离倾向的牺牲层设置于端子件的除了与其它部件连接的电气连接部分之外的部分。

Description

装接有端子的电线
现有申请的交叉引用
本申请基于2016年8月12日提交的日本专利申请(No.2016-158822),该专利申请的内容通过引用并入本文。
技术领域
本发明涉及一种端部装接有端子件的装接有端子的电线。
背景技术
例如,对于布置在车辆中的线束,使用了一种装接有端子的电线,以减轻重量,该装接有端子的电线使由铜或铜合金制成的端子件压接连接于具有由铝或铝合金制成的芯线的电线。顺便提及,存在这样的担心:在装接有端子的电线中,附着于作为不同金属的电线的芯线与端子件之间的水将用作电解液,并从而将发生电化学腐蚀。
因此,将被覆材料附着在压接于电线的端子件的压接区域的预定位置处,使得在电线与芯线的连接位置处减少腐蚀的发生(例如,参见专利文献1)。
专利文献1:JP 2013-149598 A
发明内容
鉴于上述情况做出了本发明,并且本发明的目的是提供一种在抑制成本的同时具有高耐腐蚀性的装接有端子的电线。
为了实现上述目的,根据本发明的装接有端子的电线具有下面的(i)至(iii)。
(i)一种装接有端子的电线,包括:
电线,该电线包括由铝或铝合金制成并且由被覆部覆盖的芯线,所述芯线在所述电线的端部处露出;和
端子件,该端子件由铜或铜合金制成,并且连接于所述电线的所述端部,
其中,具有比铝高的电离倾向的牺牲层设置在所述端子件的除了与其它部件连接的电气连接部分之外的部分上。
(ii)根据以上(i)的装接有端子的电线,其中,
所述牺牲层是由锌制成的镀层。
(iii)根据以上(i)的装接有端子的电线,其中,
所述端子件包括压接于所述芯线的导体压接部,并且
所述牺牲层形成在所述导体压接部的与所述芯线压接在其上的表面相反的表面上。
附图说明
图1是根据该实施例的装接有端子的电线的立体图。
图2是沿着图1中的线A-A截取的截面图。
图3是沿着图1中的线B-B截取的截面图。
图4A和4B是图示出对端子件的基材进行镀锡的过程的视图,图4A是基材的示意性侧视图,并且图4B是基材的示意性后视图。
图5A和5B是示出对端子件的基材进行镀锌的过程的视图。图5A是基材的示意性侧视图,并且图5B是基材的示意性后视图。
图6是压力加工之后的链状端子件的后视图。
具体实施方式
在专利文献1中的技术中,当被覆材料未精确地附着在诸如压接片的缘部与芯线之间的接触面这样的预定位置处时,需要时间和精力来加工,从而导致成本的升高。
鉴于上述情况做出了本发明,并且本发明的目的是提供一种在抑制成本的同时具有高耐腐蚀性的装接有端子的电线。
在下文中,将参考附图描述根据本发明的实施例的实例。
图1是根据该实施例的装接有端子的电线的立体图。
如图1所示,根据实施例的装接有端子的电线1包括电线10和端子件20。端子件20压接并且电气连接到电线10的端部。例如,装接有端子的电线1构成布置在诸如汽车这样的车辆中的线束。
电线10是具有芯线11和覆盖芯线11的由树脂制成的被覆部12的绝缘电线。芯线11由铝或铝合金制成,并且构造成具有多个绞合线。如上所述,电线10的芯线11由铝或铝合金制成,从而装接有端子的电线1轻量化,因此,被构造成具有该装接有端子的电线1的线束轻量化。特别地,轻量化的装接有端子的电线1适合在经常使用线束的诸如尤其是电动汽车或混合动力汽车这样的车辆中使用。
端子件20在前部具有电连接部31并且在后部具有电线连接部41。电连接部31与电线连接部41通过连结部35互相连接。
端子件20通过对由金属板制成的基材进行压力加工(冲压加工和弯曲加工)而形成。端子件20由与铝或铝合金制成的电线10的芯线11不同的金属材料制成。在实例中,端子件20由作为基材的、铜或铜合金制成的金属板形成。
电连接部31形成为筒状,该筒状的末端部是开口的,开口部的连接对方端子件插入且电气连接于电连接部31。
电线连接部41压接且电气连接于电线10的端部。电线连接部41具有在前侧的一对导体压接部45,并且具有一对被覆压接部46。电线连接部41的上表面侧作为一个表面,该一个表面是电线10的端部设置在其上的安装表面41a。
图2是沿着图1中的线A-A截取的截面图。
如图2所示,在芯线11露出的电线10的端部设置在安装表面41a上的状态下,将一对导体压接部45从两侧压接于电线连接部41。以这种方式,导体压接部45压接且电气连接于电线10的芯线11。
另外,被覆压接部46弯曲以围绕设置在安装表面41a上的电线10的端部的被覆部12的区域,并且压接,使得被覆压接部46的端部互相重叠。
图3是沿着图2中的线B-B截取的截面图。
如图3所示,端子件20的基材20a在其正面和背面上具有镀锡层50。此外,端子件20在电线连接部41中具有牺牲层51。牺牲层51设置于导体压接部45的外表面并且形成为与镀锡层50重叠,该导体压接部45的外表面是与和芯线11进行接触的内表面侧相反的表面。以这种方式,将牺牲层51设置在连接于电线连接部41的电线10的芯线11的附近。牺牲层51由具有比铝高的电离倾向的卑金属(base metal)制成,从而在该实例中,牺牲层由锌(Zn)的镀层形成。牺牲层51的厚度是大约10μm至20μm。如上所述,牺牲层51设置在端子件20的除了与诸如连接对方端子件或电线10的芯线11这样的其它部件进行电气连接的电气连接部分之外的区域中。
图4图示出对端子件的基材进行镀锡的过程的视图,图4A是基材的示意性侧视图,并且图4B是基材的示意性后视图。图5图示出对端子件的基材进行镀锌的过程的视图,图5A是基材的示意性侧视图,并且图5B是基材的示意性后视图。图6是压力加工之后的链状端子件的后视图。
在制备具有牺牲层51的端子件20时,首先,如图4A和4B所示,在拉出由铜或铜合金的金属板制成的端子件20的细长基材20a的同时,将镀锡层50形成在端子件20的正表面和背表面上。如图5A和5B所示,在拉出正表面和背表面上形成有镀锡层50的细长基材20a的同时,进行镀锌(Zn),以在拉出方向上在一个表面上具有带状,从而形成牺牲层51。然后,如图6所示,使上面形成有牺牲层51的基材20a经受压力加工,从而端子件20在连结位置21a连结到带状的载体21,因此形成了链状连结的端子件。此时,进行压力加工,使得将牺牲层51设置在作为电线连接部41的安装表面41a的相反侧表面的端子件20的背表面上。
在载体21的连结位置21a处切割具有牺牲层51的端子件20,从而使端子件20从载体21分离,并且在电线10的端部设置在电线连接部41的安装表面41a上的状态下压接导体压接部45和被覆压接部46。以这种方式,将导体压接部45压接于电线10的芯线11,并且将被覆压接部46压接于电线10的被覆部12。
以这种方式,在其中端子件20被压接成连接于电线10的端部的装接有端子的电线1中,由具有比铝高的电离倾向的卑金属的锌的镀层制成的牺牲层51设置于芯线11的附近。因此,当水附着于端子件20时,牺牲层51在由铝或铝合金制成的芯线11之前腐蚀,并从而抑制电线10的芯线11的腐蚀。
如上所述,在根据该实施例的装接有端子的电线1中,在端子件20的除了与其它部件连接的电气连接部分之外的区域中设置的牺牲层51在电线10的芯线11之前腐蚀,并从而能够抑制芯线11的腐蚀,使得能够抑制由于电线10的芯线11的腐蚀而引起的阻抗的增大。另外,与将被覆材料精确地施加或镀敷在端子件20的预定位置处以抑制腐蚀的情况相比,能够在抑制成本的同时实现端子件20与电线10的芯线11的高连接可靠性。
这里,在对形成有向正表面和背表面进行镀锡且形成镀锡层50的预镀材料的基材20a进行压力加工,并且形成端子件20的情况下,由铜或铜合金制成的基材20a从切割面露出,并且存在将在由铝或铝合金制成的芯线11中发生电化学腐蚀的担心。在这样的情况下,设置在端子件20上的牺牲层51首先腐蚀,并从而能够抑制电线10的芯线11的腐蚀。
另外,由于牺牲层51是由锌制成的镀层,在端子件20的除了与其它部件连接的电气连接部分之外的区域中进行镀锌,所以能够容易地在端子件20上形成牺牲层51。
另外,由于牺牲层51形成在将压接于芯线11的导体压接部45的与芯线11相反的一侧的表面上,导体压接部45受到压接并且压接于芯线11,从而将牺牲层51设置在芯线11的附近。因此,能够有效地抑制芯线11的腐蚀。
注意,只要牺牲层51的形成位置是除了电气连接部分之外的区域,则牺牲层可以形成在电线连接部41的外侧。换句话说,能够将牺牲层51形成在除了电气连接于芯线11的导体压接部45的内表面、或者连接对方端子件插入到其内并且该端子件电气连接到的电连接部31的内侧之外的区域。例如,作为牺牲层51的形成位置,牺牲层可以形成在电连接部31的外周面上,或者形成于连结在电连接部31与电线连接部41之间的连结部35上。
另外,在上述实施例中,牺牲层51形成为具有贯穿所拉出的细长基材20a的与电线连接部41的安装表面41a相反的表面的带状(参见图5B);然而,牺牲层可以形成为在所拉出的细长基材20a的除了电气连接部分之外的区域的位置处具有多个线条形状。另外,牺牲层51可以基材20a的除了电气连接部分之外的区域的整个背表面上形成在所拉出的细长基材20a上。如上所述,牺牲层51设置在基材20a的整个背表面上,并从而能够具有牺牲层51的高的可腐蚀量。另外,能够实现成本的降低,而不花费时间和精力将牺牲层51形成在预定范围中。
此外,在上述实施例中,在形成端子件20之前将牺牲层51预先形成在基材20a上;然而,端子件20可以由镀锡的基材20a形成,端子件20可以经受与电线10的压接连接,并且在此之后,牺牲层51可以形成在端子件20的除了电气连接部分之外的区域中。
另外,在上述实施例中,描述了导体压接部45压接于电线10的芯线11并且被覆压接部46压接于电线10的被覆部12的端子件20的实例;然而,作为端子件20,可以采用具有连结在导体压接部45与被覆压接部46之间的一对压接片的重叠型的端子件,其中压接片弯曲以包围电线10的端部并且压接片的端部压接于电线10从而互相重叠。根据该重叠型的端子件20,在与电线10的连接位置处实现了高止水效果。
注意,本发明不限于上述实施例,并且能够适当地进行修改、改进等。另外,只要能够实现本发明,则上述实施例中的构成元件的材料、形状、尺寸、数量、位置等是任意的,并且不受限制。
这里,在(i)至(iii)中简要地共同列出了上述根据本发明的装接有端子的电线的实施例的特征。
(i)一种装接有端子的电线(1),包括:
电线(10),该电线(10)包括由铝或铝合金制成并且由被覆部覆盖的芯线(11),所述芯线(11)在所述电线(10)的端部处露出;和
端子件(20),该端子件(20)由铜或铜合金制成,并且连接于所述电线(10)的所述端部,
其中,具有比铝高的电离倾向的牺牲层(51)设置在所述端子件(20)的除了与其它部件电气连接的电气连接部分之外的部分上。
(ii)在根据(i)的装接有端子的电线中,所述牺牲层(51)可以是由锌制成的镀层。
(iii)在根据(i)或(ii)的装接有端子的电线中,所述端子件(20)包括压接于所述芯线(11)的导体压接部(45),并且所述牺牲层(51)形成在所述导体压接部(45)的与所述芯线(11)压接在其上的表面相反的表面上。
在具有上述(i)的构造的装接有端子的电线中,设置在端子件的除了与其它部件电气连接的电气连接部分之外的区域中的牺牲层在电线的芯线之前腐蚀,并从而能够抑制电线的芯线的腐蚀。因此,能够抑制由于电线的芯线的腐蚀引起的阻抗的增大。另外,与被覆材料精确地施加或镀敷在端子件的预定位置处以抑制腐蚀的情况相比,能够在抑制成本的同时实现端子件与电线的芯线的高连接可靠性。
在具有上述(ii)的构造的装接有端子的电线中,在端子件的除了与其它部件电气连接的电气连接部分之外的区域中进行镀锌,并从而能够容易地在端子件上形成牺牲层。
在具有上述(iii)的构造的装接有端子的电线中,导体压接部受到压接并且压接于芯线,从而牺牲层设置在芯线的附近。因此,能够有效地抑制芯线的腐蚀。
根据本发明,能够提供在抑制成本的同时具有高耐腐蚀性的装接有端子的电线。

Claims (3)

1.一种装接有端子的电线,包括:
电线,该电线包括由铝或铝合金制成并且由被覆部覆盖的芯线,所述芯线在所述电线的端部处露出;以及
端子件,该端子件由铜或铜合金制成,并且连接于所述电线的所述端部,
其中,牺牲层设置在所述端子件的除了与其它部件电气连接的电气连接部分之外的部分上,所述牺牲层的电离倾向比铝的电离倾向高。
2.根据权利要求1所述的装接有端子的电线,其中,
所述牺牲层是由锌制成的镀层。
3.根据权利要求1所述的装接有端子的电线,其中,
所述端子件包括压接于所述芯线的导体压接部,并且
所述牺牲层形成在所述导体压接部的与所述芯线所压接的表面相反的表面上。
CN201710693301.0A 2016-08-12 2017-08-14 装接有端子的电线 Withdrawn CN107732469A (zh)

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