CN101013787A - 具有外导体轴向压力连接的连接器及其制造方法 - Google Patents
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Abstract
一种用于具有实心外导体的同轴电缆的电连接器,与电缆组合的连接器以及制造方法。电连接器具有连接器本体,其在连接器末端和电缆末端之间具有孔。该孔在电缆末端具有内径肩部。圆柱套筒布置在孔内邻接内径肩部。环形槽向电缆末端开放在圆柱套筒和连接器本体电缆末端之间。环形槽的尺寸可容纳实心外导体的末端。
Description
技术领域
本发明涉及同轴电缆的连接器。特别是本发明涉及通过轴向压力适用与环形波纹同轴电缆互连的低成本连接器。
本申请要求申请人F.Harwath于2005年10月19日申请的申请号为11/163411名称为“具有外导体轴向压力连接的连接器及其制造方法”的美国专利申请的权益。
背景技术
采用实心外导体的传输线电缆比使用例如金属编织物、薄片等的其他类型外导体的电缆具有提高的性能。实心外导体同轴电缆有不同的形式,例如平滑壁、环形波纹和螺旋波纹。每种不同的形式通常需要给予实心外导体的特定类型的连接器解决方案。
环形波纹电缆是柔性的并提高了防水渗入性。环形波纹同轴电缆通常用连接器为终端,其包含位于连接器和外导体凸缘之间的机械夹具。机械夹具组件相对比较贵,常常需要复杂的制造工艺、精确的螺纹配合面和多个密封衬。
替代机械夹具连接器的是便宜的焊接连接器。现有的焊接连接器产生的互连难以预制一致的品质并且甚至是在最佳预制情况下也限制了互连的机械强度。此外,焊接过程产生的热可能损坏电缆的绝缘和/或铠装材料。
另一个便宜的替代是通过压力进行互连。“卷曲Crimping”在连接器领域理解为一种沿径向施加压力的压缩形式。导线插入连接器本体以及卷曲模具例如手持卷曲工具施加径向压力。卷曲模具以高压压缩环绕实心的连接器本体。连接器本体永久地变形以配合导线的实心造成高强度的机械和电连接。在连接器本体材料中的高的残余应力保持低的且稳定的接触阻力。粘接的强度在拉力上达到了导线拉力强度的极限。但是,由于卷曲前后直径的不同,径向作用的压力表面不能被布置成使卷曲表面同时接触360度,导致卷曲力的不均匀施加以及连接器本体的不均匀的变形,造成连接器和电缆接口环境密封的问题。
卷曲编织的外导体有更多的问题。为了防止外导体相对中心导体的变形,可使用一种或另一种形式的支持套筒。通常,编织物被夹在管状金属套和连接器本体之间的一层中。认为该卷曲是很不可靠的。在接口具有通常较大的空间而使接触表面腐蚀退化。连接的机械拉力强度达不到导线的强度。最终,该连接允许在全部3个元件之间相对运动,这造成非常不良的有干扰的电连接。
由于在实心外导体电缆中应用波纹图案,管状支持套筒要求显著改变电缆内径的套筒,导致RF阻抗不连续。为了防止实心外导体的变形不使用内套筒,以键适于波纹图案的外配合套筒已应用到卷曲结构中。但是,在外导体变形之前可应用的卷曲力的水平是有限的,因此限制了最终互连的强度。
连接器本体通常由原材料进行机加工,和/或铸造然后进一步机加工。制造连接器本体和包括连接器组件的相关部件需要多次铣削和/或车削加工,这在整个制造成本中占重要部分。
在同轴电缆和连接器工业的竞争中,将注意力集中在减少制造、材料和安装成本上。同时在许多应用中还要求强度、环境密封的互连。
发明内容
因此,本发明的一个目的是提供一种可以克服现有技术中的不足的方法和设备。
一种用于具有实心外导体的同轴电缆的电连接器,包括:连接器本体,在连接器末端和电缆末端之间具有孔,该孔在电缆末端具有内径肩部;布置在孔内邻接内径肩部的圆柱套筒;向电缆末端开放的环形槽,在圆柱套筒和连接器本体的电缆末端之间,环形槽的尺寸可以容纳实心外导体的末端。
一种制造用于具有实心外导体的同轴电缆的电连接器的方法,包括以下步骤:形成在连接器末端和电缆末端之间具有孔的连接器本体,该孔在电缆末端具有内径肩部;将圆柱套筒布置在内径肩部,圆柱套筒和连接器本体一起形成向电缆末端开放的环形槽,环形槽尺寸可容纳实心外导体的末端。
附图说明
包括在说明书中并做为其一部分的图显示了本发明的实施例,并且和上述发明概述以及下述的发明实施例的详细描述一起,阐述了本发明的主旨。
图1是根据本发明连接器第一实施例的示意性的局部剖面侧视图;
图2是图1的示意性的局部剖面侧视图,其中电缆具有用于通过轴向压力连接的设置的环形波纹外导体;
图3是在应用轴线压力以互连电缆和连接器之前固定在套(nest)和分段模具中的图2的示意性的局部剖面侧视图;
图4是在应用轴向压力以互连电缆和连接器之后的图3的示意性的局部剖面侧视图;
图5是在应用轴向压力以互连电缆和连接器之后的图2的示意性的局部剖面侧视图;
图6是图1的示意性的局部剖面侧视图,其中电缆具有用于通过轴向压力连接的设置的直壁外导体;
图7是在应用轴线压力以互连电缆和连接器之后的图6的示意性的局部剖面侧视图;
图8是根据本发明第二实施例的连接器的局部剖面侧视图,其中电缆具有用于通过轴向压力连接的设置的螺旋波纹外导体。
具体实施方式
本发明应用轴向而不是径向的机械压力使本发明的连接器本体电缆末端处圆周向内变形。向内变形操作使连接器和同轴电缆的外导体互连。触变金属模制技术可以应用在显著的减少制造成本的连接器本体的形成上。
参考图1-8描述本发明的第一和第二实施例。如图1所示,连接器本体1在连接器末端5和电缆末端7之间有孔3。在电缆末端7,内径肩部9的尺寸可以容纳圆柱套筒11。向电缆末端7开放的环形槽13形成在圆周套筒11和连接器本体1之间。环形槽13例如可以通过在圆柱套筒11的电缆末端7中形成的外径肩部15构成。可选择的是,内径台阶可以形成在连接器本体1的电缆末端7的内径处,以简化圆柱套筒11的制造。
即使有的话,环形槽13的尺寸可以在波纹峰径处容纳实心外导体15的末端。为了减小由于内导体17和外导体15之间的空间不均匀造成的电特性的破坏,即使有的话,圆柱套筒11的尺寸可以具有基本等于或大于外导体15波纹底径的内径。
在一些连接器接口(interface)结构中,例如F型,电缆的内导体17穿过作为连接器接口一部分的孔。在其他方面,中心触头19通过绝缘子21在孔3中同轴设置。绝缘子21可以通过使用塑料注模就地成型,因此绝缘子21的材料通过连接器本体1的小孔23注入,填充在中心触头19和连接本体1之间的空间在孔3中,以支持中心触头19并在连接器末端5和电缆末端7之间形成环境密封。为了方便清理、储存和运输,圆柱套筒11可以被压配入内径肩部15中,以形成单一元件准备用于连接到所需电缆。这里所示的连接器本体1的连接器末端5适用于标准N型连接器接口结构,为了清楚省略了连接螺母。本领域技术人员将认识到,任何所需要的标准或者专有的连接器接口结构都可以应用到连接器末端上。
根据本发明,适合应用于环形波纹同轴传输线电缆的实例的连接器是LDF4,由本发明的受让方Illinois州Orland Park的Andrew公司制造。电缆具有带环形波纹的外导体15和环绕绝缘体的内导体17。为了将电缆永久连接到连接器,预制电缆末端呈现波纹峰,同轴电缆的任何保护外壳被向后剥去,内导体17从外导体15的末端延伸预定距离。如图2所示,外导体15电缆末端插入环形槽13中。由于外导体15电缆末端插入环形槽13中,内导体17也布置到例如弹性销或者其他中心触头19的触头结构中。
如图3的实施例所示,为了将连接器本体1和电缆互连,连接器本体1的连接器末端5可以相对连接器末端套27布置,相对套27的轴向压力沿着连接器本体1和电缆的纵轴线施加到连接器本体1的连接器末端5和电缆末端7之间。连接器本体1的电缆末端7通过两个或多个分段模具29的倾斜表面28接触。为了简化分段模具29的组装并且在施加轴向压力之后移除,分段模具29适于被模具套31支持。在连接器本体1和电缆相对于连接器末端套27布置以及分段模具29围绕连接器本体1和电缆放置之后,连接器末端套27和分段模具29相对轴向移动,借此倾斜表面28作用在连接器本体1的电缆末端7以产生均匀的圆周向内变形,如图4和5所示,将连接器本体1固定到外导体15上并且因此将电缆固定到连接器本体1上。
优选的是,由于应用轴向压力的结果,连接器本体1的电缆末端7均匀变形,以使直径小于环形槽13,造成相对于外导体15分离出环形槽13并远离连接器本体1的机械闭塞(block)。为了允许连接器本体1的电缆末端7在轴向压力作用下向内延伸以形成机械闭塞,连接器本体1的电缆末端7的尺寸使至少为外导体15两倍的厚度朝向电缆末端7延伸超过环形槽13。
如图6和7所示,相同的连接器本体1也可以使用直壁外导体15电缆。在这种情况下,也会产生相对于外导体15的环形变形。
在第二实施例中,如图8所示,圆柱套筒11可以形成具有凹槽33,其尺寸可接纳螺旋波纹外导体15电缆的波纹导向边。因此,根据本发明的单个连接器本体1可以耦合到相同直径的直的、环形波纹或螺旋波纹的实心外导体15同轴电缆。本领域技术人员应该认识到,根据本发明的连接器可以应用到任何外导体波纹中,使连接器本体1和或圆柱套筒11适于形成环形槽13,环形槽13和要求的外导体15的末端轮廓匹配。
模具和或套在施加轴向压力的过程中的轴向移动同时允许邻近360度径向接触连接器本体1的电缆末端7。因此,连接器本体1的电缆末端7向内变形是均匀的。这产生了具有高强度的无效(void)自由互连、非常低的和稳定的接触阻抗、低的互-调制变形和高水平的机械互连可靠性。
选择连接器本体1的第一材料具有适合变形的刚度特性。同样,选择圆柱套筒11的第二材料具有比连接器本体1更大的刚度特性,这样当在轴向压力下,连接器的电缆末端变形接近保持和外导体15的接触并且圆周套筒11在其下,圆柱套筒11不会阻止连接器本体1和/或外导体15压缩到电缆的绝缘空间。通过选择相对于连接器本体1的套不同的合适的材料厚度,连接器本体1的电缆末端7的构形是连接器本体7最薄弱的区域。因此,当连接器本体1受到轴向压力时,连接器本体1的电缆末端7经受超过弹性极限和永久变形的应力,而连接器本体1的套没有不可接受的变形。
应用中发现合适的第一材料是镁金属合金,以及非常有利的形成连接器本体1的方法是通过触变镁合金金属注模技术。通过该方法,镁合金被加热直到触变状态然后被注模,其与塑料注模技术相似。因此,根据本发明的连接器本体1可以低成本、以高水平的制造公差和大批量的制造。应用在触变金属模制的镁合金具有合适的刚度特性同时也具有重量轻的优点。
本发明提供低成本的连接器和与最小量的分离元件、材料成本及需要的制造操作互连的电缆,该操作可能用于具有任何需要的外导体波纹电缆。此外,根据本发明的连接器和电缆的互连具有提高的电和机械特性。用最小的工时和需要的组装操作可以可靠地完成将连接器安装到电缆上。
这里在前述中已经对具有公知的等同物的比例、整体或元件做出参考,于是在此也包括这种等同物独立出现的情况。
尽管通过对实施例的描述介绍了本发明,同时在相当的细节上描述了实施例,申请人的意图并不是约束或者以任何方法限制所附的权利要求的范围到这些细节中。附加的优点和改型对本领域技术人员是显而易见的。因此,本发明在广义上不局限于特性的细节、典型的设备、方法及示例性的实施例及其描述。当然,在不背离申请人基本发明概念的构思和范围的情况下,可以做出与这些细节不同的部分。进一步可以理解,在不背离如下列所限定的权利要求的本发明构思和范围的情况下,可以作出改进和/或修改。
Claims (19)
1、一种用于具有实心外导体的同轴电缆的电连接器,包括:
连接器本体,在连接器末端和电缆末端之间具有孔,该孔在电缆末端具有内径肩部;
布置在孔内邻接内径肩部的圆柱套筒;
向电缆末端开放的环形槽,在圆柱套筒和连接器本体的电缆末端之间,环形槽的尺寸可以容纳实心外导体的末端。
2、如权利要求1所述的连接器,其中,圆柱套筒的套筒内径基本上等于外导体的波纹底直径。
3、如权利要求1所述的连接器,其中,圆柱套筒具有槽,其尺寸可以容纳实心外导体末端的导向螺旋波纹。
4、如权利要求1所述的连接器,其中,连接器本体以大于实心外导体两倍的厚度朝向电缆末端延伸超过圆柱套筒。
5、如权利要求1所述的连接器,进一步包括通过绝缘子同轴支撑在孔中的中心触头。
6、如权利要求1所述的连接器,其中,圆柱套筒被压配入内径肩部。
7、如权利要求1所述的连接器,其中,环形槽通过在圆柱套筒的电缆末端内的外径台阶形成。
8、如权利要求1所述的连接器,其中,环形槽通过在连接器本体的电缆末端内的内径台阶形成。
9、如权利要求1所述的连接器,其中,圆柱套筒由具有大于连接器本体的第二材料的刚度特性的第一材料形成。
10、如权利要求9所述的连接器,其中,第二材料是镁合金。
11、如权利要求1所述的连接器,进一步包括在连接器末端的连接器接口。
12、一种与具有实心外导体的同轴电缆组合的连接器,包括:
连接器本体,在连接器末端和电缆末端之间具有孔,该孔在电缆末端具有内径肩部;
布置在孔内邻接内径环形肩部的圆柱套筒;
向电缆末端开放在电缆本体和圆柱套筒之间的环形槽;
尺寸可以容纳实心外导体的末端的环形槽;
通过连接器本体的电缆末端的向内变形而保持在环形槽中的实心外导体的末端。
13、如权利要求12所述的设备,其中,连接器本体的电缆末端向内变形具有小于环形槽内径的的直径。
14、一种制造用于具有实心外导体的同轴电缆的电连接器的方法,包括以下步骤:
形成在连接器末端和电缆末端之间具有孔的连接器本体,该孔在电缆末端具有内径肩部;
将圆柱套筒布置在内径肩部,圆柱套筒和连接器本体一起形成向电缆末端开放的环形槽,环形槽尺寸可容纳实心外导体的末端。
15、如权利要求14所述的方法,其中,连接器本体通过触变金属注模形成。
16、如权利要求15所述的方法,其中,触变金属注模使用镁合金。
17、如权利要求14所述的方法,其中,连接器本体由第一材料形成,圆柱套筒由第二材料形成,第一材料具有大于第二材料的刚度特性。
18、如权利要求14所述的方法,还包括通过经由至少一个连接器本体内的小孔的塑料注射模制将中心触头布置在孔内及将绝缘子成形在孔内在中心触头和连接器本体之间的步骤。
19、如权利要求14所述的方法,其中,将圆柱套筒静配合到内径肩部中。
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US11/163,441 US7217154B2 (en) | 2005-10-19 | 2005-10-19 | Connector with outer conductor axial compression connection and method of manufacture |
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JP (1) | JP2007115690A (zh) |
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-
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- 2005-10-19 US US11/163,441 patent/US7217154B2/en active Active
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- 2006-10-02 DK DK06121635.4T patent/DK1777784T3/da active
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- 2006-10-18 KR KR1020060101238A patent/KR101248696B1/ko not_active IP Right Cessation
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CN101714707A (zh) * | 2008-10-07 | 2010-05-26 | 安德鲁有限责任公司 | 用于同轴电缆连接器的密封内导体触头 |
CN102570151A (zh) * | 2010-09-15 | 2012-07-11 | 安德鲁有限责任公司 | 多重连接器组件以及制造方法 |
CN103414050A (zh) * | 2012-02-14 | 2013-11-27 | 通用电气传感与检测科技股份有限公司 | 用于高电压电缆的高电压连接器组件、高电压连接器、以及制造高电压连接器组件的方法 |
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CN106887742B (zh) * | 2017-03-20 | 2019-07-26 | 中航光电科技股份有限公司 | 射频连接器及其绝缘支撑 |
CN113690699A (zh) * | 2021-08-25 | 2021-11-23 | 遵义市飞宇电子有限公司 | 一种浮动射频同轴连接器 |
CN113690699B (zh) * | 2021-08-25 | 2024-04-19 | 遵义市飞宇电子有限公司 | 一种浮动射频同轴连接器 |
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DK1777784T3 (da) | 2010-03-22 |
ATE451734T1 (de) | 2009-12-15 |
US7217154B2 (en) | 2007-05-15 |
EP1777784B1 (en) | 2009-12-09 |
KR101248696B1 (ko) | 2013-03-28 |
KR20070042877A (ko) | 2007-04-24 |
JP2007115690A (ja) | 2007-05-10 |
CA2564445A1 (en) | 2007-04-19 |
US20070190854A1 (en) | 2007-08-16 |
EP1777784A1 (en) | 2007-04-25 |
DE602006010953D1 (de) | 2010-01-21 |
CN101013787B (zh) | 2010-06-16 |
BRPI0604292A (pt) | 2007-08-21 |
US20070087626A1 (en) | 2007-04-19 |
US7854063B2 (en) | 2010-12-21 |
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