CN115117647A - 带端子的电线 - Google Patents

带端子的电线 Download PDF

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CN115117647A
CN115117647A CN202210280115.5A CN202210280115A CN115117647A CN 115117647 A CN115117647 A CN 115117647A CN 202210280115 A CN202210280115 A CN 202210280115A CN 115117647 A CN115117647 A CN 115117647A
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wire
core wire
terminal
electric wire
pair
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伊藤直树
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Yazaki Corp
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    • H01R4/24Connections using contact members penetrating or cutting insulation or cable strands
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    • 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
    • H01R4/24Connections using contact members penetrating or cutting insulation or cable strands
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    • H01R4/2445Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
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    • H01R4/2452Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the additional means having two or more slotted flat portions in serial configuration, e.g. opposing folded slots
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    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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    • 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
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Abstract

本发明的目的在于提高芯线与端子配件的电连接稳定性。带端子的电线具备:电线(10),将由多根裸线(11a)构成的芯线(11)用覆皮(12)覆盖而成;和端子配件(20),组装于电线,端子配件具有与芯线物理连接且电连接的芯线连接体(22),芯线连接体具有:底部(22a);一对悬臂状的侧壁部(22b、22b),从底部立起设置且相互隔开间隔地对置配置;和至少一组的一对压接体(24、24),它们在一对侧壁部之间相互隔开间隔地对置配置,且将从一对侧壁部各自的自由端(22b1、22b1)之间的开口(22c)***的电线的覆皮切开以压接于芯线的最外层的裸线,在电线设置有使芯线的所有裸线彼此熔接而成的熔接部(11b)。

Description

带端子的电线
技术领域
本发明涉及一种带端子的电线。
背景技术
以往,已知有一种带端子的电线,其具备:电线,其是将由多根裸线构成的芯线用覆皮覆盖而成;以及端子配件,其被组装于该电线。例如,在该带端子的电线中,通过使设置于端子配件的一对压接体压接于芯线,从而使该芯线与端子配件物理连接且电连接。关于这种带端子的电线,例如在下述的专利文献1中有所公开。
现有技术文献
专利文献
专利文献1:实开昭61-112575号公报
发明内容
发明欲解决的技术问题
然而,在该以往的带端子的电线中,由于使一对压接体从外表面侧压接于芯线,因此构成该芯线的裸线的根数越多,相对于与压接体直接接触的裸线(接触裸线)的根数而言,未与压接体直接接触的裸线(非接触裸线)的根数越增加。并且,在该芯线中,非接触裸线经由接触裸线而间接地与压接体电连接。因此,在以往的带端子的电线中,在芯线的裸线之间电阻变高,有可能导致在该芯线与端子配件之间的连接部分处的电阻上升。因此,现有的带端子的电线在提高芯线与端子配件的电连接稳定性方面存在改善的余地。
因此,本发明的目的在于提供一种能够提高芯线与端子配件的电连接稳定性的带端子的电线。
用于解决问题的技术手段
为了实现上述目的,本发明的特征在于,具备:电线,所述电线通过将由多根裸线构成的芯线用覆皮覆盖而成;以及端子配件,所述端子配件组装于所述电线,所述端子配件具有与所述芯线物理连接且电连接的芯线连接体,所述芯线连接体具有:底部;一对悬臂状的侧壁部,所述侧壁部从所述底部立起设置,并且相互隔开间隔地对置配置;和至少一组的一对压接体,每组的一对压接体在所述一对侧壁部之间相互隔开间隔地对置配置,并且将从所述一对侧壁部各自的自由端之间的开口***的所述电线的所述覆皮切开以压接于所述芯线的最外层的所述裸线,所述电线设置有使所述芯线的所有裸线彼此熔接而成的熔接部。
发明效果
在本发明所涉及的带端子的电线的芯线中,由于所有裸线通过熔接部直接连接,因此能够抑制裸线之间的电阻上升。因此,本发明所涉及的带端子的电线能够抑制芯线与芯线连接体之间的连接部分处的电阻的上升,因此能够提高芯线与端子配件的电连接稳定性。
另外,在电线中,在裸线由铝或铝合金形成的情况下,在该裸线的表面形成氧化皮膜。然而,在芯线中,在形成熔接部时,所有裸线以该氧化皮膜被已去除的状态彼此熔接。因此,在该芯线中,即使在裸线由铝或铝合金形成的情况下,也能够抑制裸线间的电阻上升。而且,在电线被压入的过程中,一对压接体一边摩擦芯线的最外层的裸线的表面一边去掉该裸线的氧化皮膜。因此,芯线连接体能够使一对压接体在不存在氧化皮膜的状态下与芯线的最外层的裸线接触。因此,本发明所涉及的带端子的电线即使在裸线由铝或铝合金形成的情况下,也能够抑制芯线与芯线连接体之间的连接部分处的电阻上升。
这样,本发明所涉及的带端子的电线抑制在芯线与芯线连接体之间的连接部分处的电阻上升,因此能够提高芯线与端子配件的电连接稳定性。
附图说明
图1是示出实施方式的带端子的电线的分解立体图。
图2是示出实施方式的带端子的电线的立体图。
图3是从端子配件的开口侧观察实施方式的带端子的电线的俯视图。
图4是图3的X-X线剖面的示意图。
图5是示出熔接部的形成工序的一例的说明图。
图6是示出熔接部的形成工序的另一例的说明图。
符号说明
1 带端子的电线
10 电线
10a 末端部
10b 端面
11 芯线
11a 裸线
11b 熔接部
11c 露出面
12 覆皮
20 端子配件
22 芯线连接体
22a 底部
22b 侧壁部
22b1 自由端
22c 开口
24 压接体
具体实施方式
以下,基于附图对本发明所涉及的带端子的电线的实施方式进行详细说明。需要说明的是,本发明不限于该实施方式。
[实施方式]
基于图1至图6对本发明所涉及的带端子的电线的实施方式之一进行说明。
图1至图4的符号1表示本实施方式的带端子的电线。该带端子的电线1具备电线10和组装于该电线10的端子配件20,它们物理连接且电连接。
该带端子的电线1可以是在电线10的末端连接有端子配件20的带端子的电线,也可以是在电线10的两端部之间的一部分连接有端子配件20的带端子的电线。另外,该带端子的电线1可以是在一根电线10连接有至少一个端子配件20的带端子的电线,也可以是将多根电线10用至少一个端子配件20连接并经由该端子配件20将多根电线10电连接的带端子的电线。例如,端子配件20在形成为通过向配对侧端子配件嵌合连接而与该配对侧端子配件物理连接且电连接的情况下、或者通过与配对侧的电连接部之间螺钉固定而与该电连接部物理连接且电连接的情况下,至少与一根电线10的末端连接。另外,例如,端子配件20在形成为使多根电线10电连接的接合端子的情况下,与电线10的末端或电线10的两端部之间的一部分连接。该情况下的端子配件20可以是将多根电线10物理连接且电连接并经由自身而将所有电线10电连接的接合端子,也可以是以多根电线10中的至少两根为一组地进行物理连接且电连接的接合端子,并针对每组而设置。在此所示的带端子的电线1中,与配对侧端子配件嵌合连接的一个端子配件20与一根电线10的末端连接。
电线10具备由多根裸线11a构成的芯线11和覆盖该芯线11的覆皮12(图1、图3以及图4)。在此所示的电线10具备:芯线11,其是将多根由导电性金属线材构成的裸线11a捆扎成圆柱状而成;以及圆筒状的覆皮12,其以同心的方式从外表面侧覆盖该芯线11。裸线11a例如由铝、铝合金、铜或铜合金形成。
该芯线11可以是将彼此的轴线方向一致的多根裸线11a捆扎成圆柱状的芯线,也可以是将捆扎成圆柱状的多根裸线11a绞合而成的绞线。进而,作为该绞线的芯线11可以是通过将捆扎成圆柱状的全部裸线11a一起绞合而成,也可以是通过将一根裸线11a放置在中心并将其余的多根裸线11a卷绕在该一根裸线11a的周围而成,也可以是通过形成多根将多根裸线11a捻合而成的裸线组并将该多根裸线组捆扎成圆柱状并一起绞合而成。无论芯线11采用上述的何种形态,其都是在最外层配置多根裸线11a并且在该最外层的多根裸线11a的内侧配置多根裸线11a。
端子配件20由金属等导电性材料形成。此处所示的端子配件20通过对作为母材的金属板进行冲压成形而形成。该端子配件20具有:端子连接体21,其与配对侧端子配件的端子连接体(省略图示)物理连接且电连接;芯线连接体22,其与电线10末端的芯线11物理连接且电连接;以及覆皮连接体23,其与电线10末端的覆皮12物理连接(图1至图3)。
例如,端子配件20的端子连接体21和配对侧端子配件的端子连接体中的一个形成为阴端子形状,并且其中的另一个形成为阳端子形状,相互***嵌合。在该示例中,端子配件20的端子连接体21形成为阴端子形状,配对侧端子配件的端子连接体形成为阳端子形状。
芯线连接体22具有:底部22a;和从该底部22a立起设置且相互隔开间隔地对置配置的一对悬臂状的侧壁部22b、22b(图1、图2以及图4)。电线10的末端被容纳在由该底部22a和一对侧壁部22b、22b围成的空间内。在此所示的芯线连接体22中,一对矩形的侧壁部22b、22b从矩形的底部22a的两端垂设。在该芯线连接体22中,在由底部22a和一对侧壁部22b、22b围成的空间内,电线10的末端被从该一对侧壁部22b、22b各自的自由端22b1、22b1之间的开口22c***(图1、图2和图4)。
而且,该芯线连接体22具有至少一组的一对压接体24、24,该一对压接体24、24在一对侧壁部22b、22b之间相互隔开间隔地对置配置,且将从开口22c***后的电线10的覆皮12切开而压接于芯线11的最外层的裸线11a(图1至图4)。此处所示的芯线连接体22具有两组该一对压接体24、24。该两组的一对压接体24、24在组装于芯线连接体22中的电线10的轴线方向上相互隔开间隔地配置。
该一对压接体24、24可以是从底部22a向开口22c分别突出的结构,也可以是一个压接体从一个侧壁部22b向另一个侧壁部22b突出且另一个压接体从另一个侧壁部22b向一个侧壁部22b突出的结构。此处所示的压接体24形成为从侧壁部22b将该侧壁部22b的一部分弯折90度而成的片体。
该一对压接体24、24具有压接端部24a、24a,该压接端部24a、24a在一对侧壁部22b、22b的对置配置方向上相互隔开间隔地对置配置,且在其间供电线10压入(图4)。在该一对压接体24、24中,利用各自的压接端部24a、24a夹持芯线11,并且使按压力从各自的压接端部24a、24a作用于该芯线11的最外层的裸线11a,从而与该最外层的裸线11a物理连接且电连接。因此,在该一对压接体24、24中,使各自的压接端部24a、24a的间隔比芯线11的直径窄。压接端部24a可以形成为沿着电线10从开口22c***的***方向的平面,也可以形成为刃形的压接刃。此处所示的压接端部24a形成为具有与母材的板厚相当的厚度的平面。
另外,该一对压接体24、24在开口22c侧的端部具有芯线导入部,该芯线导入部是在将电线10压入各压接端部24a、24a之间时的***起点,其横宽比各压接端部24a、24a的间隔宽。例如,该一对压接体24、24分别在开口22c侧的端部具有倾斜部24b、24b,该倾斜部24b、24b与压接端部24a、24a相连且随着从与该压接端部24a、24a的边界朝向开口22c侧而使彼此的间隔扩大(图4)。芯线导入部由该各倾斜部24b、24b形成。倾斜部24b可以形成为具有与母材的板厚相当的厚度的平面,也可以形成为刃形的压接刃。这里所示的倾斜部24b形成为压接刃。
电线10从开口22c***到由底部22a和一对侧壁部22b、22b围成的空间内。伴随于此,一对压接体24、24通过各自的倾斜部24b、24b将被压入的电线10的覆皮12切开,使该覆皮12中的芯线11中的最外层的裸线11a露出。电线10被进一步向深处压入,从而露出的芯线11的最外层的裸线11a沿着各压接端部24a、24a摩擦,同时电线10被压入到各个压接端部24a、24a之间。由此,在该电线10中,芯线11在各个压接端部24a、24a之间成为压接状态,芯线11的最外层的裸线11a经由各个压接端部24a、24a而与端子配件20物理连接且电连接。
这样,芯线连接体22使一对压接体24、24与芯线11的最外层的裸线11a直接接触(图4)。因此,该芯线连接体22原则上不能与芯线11中的比最外层靠内侧的裸线11a直接接触。而且,该芯线连接体22并不是使一对压接体24、24与全部的最外层的多根裸线11a直接接触。即,在芯线11中,大致分为与压接体24直接接触而电连接的最外层的裸线(以下,称为“接触裸线”)11a和经由该接触裸线11a而与压接体24间接地电连接的其余裸线(以下,称为“非接触裸线”)11a。而且,在该芯线11中,即使裸线11a的根数增加,其增加部分也并非全部与压接体24直接接触,裸线11a的根数越增加,与接触裸线11a的增加率相比,非接触裸线11a的增加率越高,随之,芯线11的裸线间的电阻变高。
因此,在该带端子的电线1中,通过使芯线11的裸线间的电阻降低,从而使芯线11与端子配件20的电连接稳定性提高。在此,通过使芯线11的全部裸线彼此物理连接且电连接,从而使该芯线11的裸线间的电阻降低。因此,在电线10设置使芯线11的全部裸线彼此熔接而成的熔接部11b(图1至图3及图5)。
由此,在芯线11中,全部的裸线11a通过熔接部11b直接连接,因此能够抑制裸线间的电阻上升。因此,本实施方式的带端子的电线1能够抑制在芯线11与芯线连接体22之间的连接部分处的电阻上升。
另外,在电线10中,在裸线11a由铝或铝合金形成的情况下,在该裸线11a的表面会形成氧化皮膜。然而,在芯线11中,在形成熔接部11b时,在该氧化皮膜已被去除的状态下将所有的裸线彼此熔接。因此,在该芯线11中,即使在裸线11a由铝或铝合金形成的情况下,也能够抑制裸线间的电阻上升。而且,在电线10被压入的过程中,一对压接体24、24一边利用各压接端部24a、24a擦拭芯线11的最外层的裸线11a的表面,一边将该裸线11a的氧化皮膜去掉。因此,芯线连接体22能够使一对压接体24、24在不经由氧化皮膜的情况下与芯线11的最外层的裸线11a接触。因此,本实施方式的带端子的电线1即使在裸线11a由铝或铝合金形成的情况下,也能够抑制在芯线11与芯线连接体22之间的连接部分处的电阻上升。
具体而言,熔接部11b可以设置在电线10的末端,也可以设置在电线10的两端部之间。另外,熔接部11b可以在芯线11被覆皮12覆盖的状态下形成,也可以对被覆皮12覆盖之前的芯线11形成。例如,在将该熔接部11b设置于电线10的末端的情况下,该熔接部11b设置于该电线10的末端的末端部10a处的芯线11的露出部分。在该情况下,熔接部11b在芯线11被覆皮12覆盖的状态下形成于该芯线11的露出部分。另外,例如,在将该熔接部11b设置于电线10的两端部之间的情况下,该熔接部11b对被该覆皮12覆盖之前的芯线11形成。
该熔接部11b例如通过对芯线11中的被捆扎的全部裸线11a的一部分照射激光,利用该激光照射使芯线11的全部裸线彼此熔接而形成。
此处所示的熔接部11b设置于电线10的末端部10a处的芯线11的露出部分(图5)。例如,这里所示的芯线11被覆皮12覆盖直至电线10的末端部10a的轴线方向上的端面10b。并且,该芯线11具有在该电线10的末端部10a的端面10b露出的露出面11c(图5的上图和中图)。因此,此处所示的熔接部11b是通过对该芯线11的露出面11c照射激光,利用对该芯线11的露出面11c的激光照射使全部的裸线彼此熔接从而形成的(图5的中图和下图)。即,该熔接部11b是利用向该芯线11的露出面11c的激光照射而形成的激光熔接部。该激光照射例如可以对配置在夹具上的一根电线10进行,也可以对在夹具上排列配置的多根电线10依次进行。
覆皮连接体23由底部23a和从该底部23a的两端突出的一对筒片部23b、23b构成(图1和图2)。在该覆皮连接体23中,例如,电线10的末端被从各个筒片部23b、23b的自由端23b1、23b1之间的开口23c(图1)***,该覆皮12载置于底部23a的内壁面(底面)。例如对各个筒片部23b、23b进行加压而使其变形的同时使该覆皮连接体23卷绕于电线10的末端的覆皮12。
如上所示,本实施方式的带端子的电线1抑制了在芯线11与芯线连接体22之间的连接部分处的电阻上升,因此能够提高芯线11与端子配件20的电连接稳定性。
另外,在此所示的电线10中,在形成熔接部11b时,没有将覆皮12部分地剥去,而是使激光照射于末端部10a的端面10b的露出面11c。因此,在该带端子的电线1中,不需要进行覆皮12的剥离作业,因此能够抑制作业工序的增加。
然而,在电线10中,在某些情况下,通过剥去末端部10a的覆皮12,在该末端部10a使芯线11柱状地露出(图6的上图和中图)。本实施方式的带端子的电线1也能够应用于具有这样的柱状的芯线11的露出部分的电线10。例如,对于该电线10,在组装于端子配件20之前,将其配置于夹具,并从外周部侧对柱状的芯线11的露出部分照射激光,使所有裸线彼此熔接(图6的中图及下图)。另外,例如,在该电线10中,也可以在组装于端子配件20之后,利用该端子配件20作为夹具,并从外周部侧对柱状的芯线11的露出部分照射激光,使所有裸线彼此熔接。
另外,在将多根电线10连接的情况下,本发明所涉及的端子配件例如也可以根据成为连接对象的电线10的根数来延长一对压接体24、24各自的压接端部24a、24a的长度,将多根电线10连接于至少一组的一对压接体24、24。另外,在将多根电线10连接的情况下,本发明所涉及的端子配件例如也可以针对每根电线10而设置至少一组的一对压接体24、24。

Claims (3)

1.一种带端子的电线,其特征在于,具备:
电线,所述电线通过将由多根裸线构成的芯线用覆皮覆盖而成;以及
端子配件,所述端子配件组装于所述电线,
所述端子配件具有与所述芯线物理连接且电连接的芯线连接体,
所述芯线连接体具有:底部;一对悬臂状的侧壁部,所述侧壁部从所述底部立起设置,并且相互隔开间隔地对置配置;和至少一组的一对压接体,每组的一对压接体在所述一对侧壁部之间相互隔开间隔地对置配置,并且将从所述一对侧壁部各自的自由端之间的开口***的所述电线的所述覆皮切开以压接于所述芯线的最外层的所述裸线,并且
所述电线设置有使所述芯线的所有裸线彼此熔接而成的熔接部。
2.根据权利要求1所述的带端子的电线,其特征在于,
所述熔接部设置于所述电线的末端部的所述芯线的露出部分。
3.根据权利要求2所述的带端子的电线,其特征在于,
所述芯线具有在所述电线的所述末端部的端面露出的露出面,并且
所述熔接部是利用对所述芯线的所述露出面的激光照射从而使所有的裸线彼此熔接而成的激光熔接部。
CN202210280115.5A 2021-03-23 2022-03-21 带端子的电线 Pending CN115117647A (zh)

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