CN101563813B - 小截面的表面安装插入式连接器 - Google Patents

小截面的表面安装插入式连接器 Download PDF

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CN101563813B
CN101563813B CN200780047072.XA CN200780047072A CN101563813B CN 101563813 B CN101563813 B CN 101563813B CN 200780047072 A CN200780047072 A CN 200780047072A CN 101563813 B CN101563813 B CN 101563813B
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pcb
connector
printed circuit
circuit board
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CN101563813A (zh
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谢尔登·L·霍斯特
克里斯托弗·G·戴利
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TE Connectivity Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
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    • H01R4/00—Electrically-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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
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    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/515—Terminal blocks providing connections to wires or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/75—Coupling devices for rigid printing circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
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    • H01R4/00—Electrically-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
    • H01R4/02—Soldered or welded connections
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    • H01R4/00—Electrically-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
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
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    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0256—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for soldering or welding connectors to a printed circuit board
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
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    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
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    • H05K2201/10106—Light emitting diode [LED]
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    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10325—Sockets, i.e. female type connectors comprising metallic connector elements integrated in, or bonded to a common dielectric support
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    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10356—Cables
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Abstract

本发明公开一种表面安装插入式连接器(10)，其用于安装在印刷电路板的表面上，并且特别适合于支撑LEDs的印刷电路板。所述连接器(10)具有固定设备，用于不用焊接而接合插入的导线引线。

Description

小截面的表面安装插入式连接器
本申请涉及归属于本发明受让人的在2005年2月22日提交的标题为“小截面的表面安装连接器”的共同等待审批的美国公开申请No.2006/0189174，其以全部内容作为参考结合于此。
技术领域
本发明致力于一种小截面的表面安装电连接器(SMEC)，用于将引线连接到使用表面安装技术(SMT)构造的电气设备。该电气设备可以是印刷电路板(PCB)，但不限于此。该PCB包含发光二极管(LEDs)。本发明特别适合于串联连接多个PCB。
背景技术
电气设备经常通过将该电气设备的端子焊接到PCB表面而被连接到印刷电路板(PCBs)。表面安装技术(SMT)是将电端子焊接到PCB的一种特有技术。SMT已被研发成以便以自动方式将电气设备固定在PCBs，但这些设备还可以被手动放置。SMT节约了成本，改进了可靠性并且在许多申请中减小了所述PCB的整个物理尺寸。SMT考虑到了将电气设备安装在PCB的两侧上，这对于使用通孔安装技术是不可能的。
SMT是一种构造电子电路的方法，在电子电路中部件被直接安装在PCB的表面上或其他合适的部件表面上。SMT是一种已经证实的用于建立电子组装的技术，当与PCB组装的类似通孔技术方法相比时，该技术具有更高的封装密度。这些部件一般通过自动方法例如机器人辅助组装线而被安装在所述板上。这些部件和所述板之间的电气接触点可以用焊膏进行处理。组装的PCBs然后在温度达到265℃或更高的高温烤箱中进行处理以使焊料回流。所述烤箱在空气下或在惰性气体例如氮气下运行。
这样制造的电子设备被称为表面安装设备(SMDs)。SMT已经大量替换了以前的构造方法，即将具有引线的部件安装到印刷电路板中的孔中，这种技术被称为通孔技术。SMT部件一般比其导引的对应部分小，因为其没有引线或较小的引线。其可以具有各种类型的较小扁销或引线、扁平触头、矩阵滚珠或位于部件主体上的其他端子以辅助将所述部件固定到板子上和/或在所述板子和所述部件之间建立电连接。
支撑发光二极管(LEDs)的PCBs可以用来形成光显示器。通常，多个LED发光PCBs通过两个或更多导线串联耦接以形成一系列的PCBs。该系列的PCBs是为柔性光源做准备，其中所述柔性光源能够适合于用于标记中的大字体的外形。现行做法是通过将导线的引线焊接到PCB表面来连接这些导线。将导线引线焊接到板子上的步骤耗时且成本较高。
要解决的问题是为将导线引线牢固地连接到PCB提供一种连接器，这种连接器能通过简单、可靠并且节省成本的工艺例如SMT自动工艺而连接到PCB。所述连接器必须接近要被焊接的导线的小物理尺寸包层以便不会遮挡支撑LEDs的PCB中的任何邻近部件。
发明内容
本解决方案是为用于将引线连接到印刷电路板(PCB)或其他合适的部件表面的小截面的表面安装电连接器(SMEC)准备的。当安装在支撑LEDs的PCB上时，连接器的小截面减小了连接器的遮挡。SMEC通过表面安装技术(SMT)即用于将电气和电子部件定位和连接到PCBs的标准自动化工艺被连接到所述PCB。所述连接可以是通过使用导电粘合剂的焊接或其他类似的方法。
所述SMEC是由具有开口的外壳形成的，其中所述开口允许剥离的引线被插入和固定。在外壳中的开口内部是触头以便接收并将引线牢固地固定就位，因此建立了从所述引线到所述PCB的电通道。该固定机构可以是提供牢固、可靠电连接的圆筒、弹簧或其他张紧机构的形式。所述SMEC代替焊点以将引线连接到PCBs。
附图说明
现在将参照附图通过例子描述本发明，其中：
图1图示表面安装电连接器的实施例的结构；
图2图示触头的详细视图；
图3图示触头的截面视图；
图4图示触头的连接点的另一实施例的详细视图；
图5图示触头的连接单的另一实施例的截面视图；
图6图示将表面安装电连接器安装在含有LEDs的PCB上。
具体实施方式
现在在参照了其中表示了本发明的优选实施例的附图之后，更全面地描述本发明。然而，本发明可以实施为许多不同的形式并且不应当被理解为限于在此阐述的实施例；而是，提供这些实施例以使该公开内容将更加完全并且将本发明的范围完全转达给本领域内的技术人员。
参照图1，描述了表面安装电连接器(SMEC)10的实施例。SMEC10包括具有至少一个开口30和至少一个触头40的外壳20。外壳20是由特拉华州威尔明顿市的E.I.杜邦公司生产的高温液体晶体状聚酯Zenite形成的。外壳的热阻允许其在用来将连接器回流焊接到PCB表面的温度下而得到连接。
该外壳可以由例如Zenite的高温液体聚合物(LCP)或例如Stanyl 46的高温尼龙或任何其他已知的工业适用性非导电高温树脂形成。
SMEC10允许无需将导线引线焊接到PCB而将导线引线电连接到所述PCB。外壳20被设置成具有小的截面和小的面积，以使其不用遮蔽或阻挡LEDs的光发射就能放置在支撑发光LEDs的PCB上。
外壳20包含初始形成在外壳20中的至少一个开口30。外壳20是通过模制形成的，并且开口20是在该步骤中形成的。开口30可以在初始形成外壳20之后得以形成。外壳20被设计成以允许触头40通过卡扣式部件由外壳20摩擦配合和保持。
触头40形成有连接点50以允许通过传统的SMT方法例如焊接将触头40连接到PCB。触头40形成有狭槽60和切口70以在插入触头40时固定引线。
图2表示具有连接点52的触头40，该连接点52与图1的连接点50几何形状不同。连接点52的形状可以变化，这取决于需要接触PCB表面的表面面积。
触头40可以通过将连接点50焊接到PCB表面而被连接到PCB。外壳20然后可以被连接到触头40以形成SMEC10。另外，触头40可以被连接到外壳20以形成SMEC 10，并且该SMEC 10然后可以通过传统的SMT方法例如焊接而在连接点50处被连接到PCB。
作为连接的一种方法，连接点50还可以被形成为将连接点50向下引导90度以便允许所述连接点被插入到形成于PCB表面的通孔中。
图3图示具有形成在触头40底侧上的狭槽60和切口70的触头40的一个实施例的更详细视图。如图3所示，切口70稍微凹入触头40中以便当插入触头40中时接合导线引线。触头40是通过从镀锡的磷青铜板首先压印出的平整成型坯件形成的。所述板是大约320微米厚的磷青铜金属并镀有大约3.0到大约4.0微米的锡。应当注意到，本发明不限于该板或喷镀厚度，以及要注意到，更薄或更厚的板以及镀层可以选择为通过线规和缠绕机得以确定。所述平的成型坯件然后被部分碾压和锻制以形成如图2和3所示的触头40，并且具有用于将触头40连接到基片例如PCB的圆柱形部分42和连接点52。
圆柱形部分42形成有定向凹槽41以通过辅助与外壳20配合来辅助SMT工艺从而辅助极化和对准触头40、连接点50、用于接收在其上具有绝缘层的导线的扩展圆柱部分44、用于接收从其上剥离绝缘层的导线的导线引线部分45。可以在没有扩展圆柱部分44的情况下形成触头40以减小触头40的尺寸。导线引线部分45可以被形成为接受长度在大约4毫米和大约7毫米之间的标准导线带。所述导线引线可以是单股线、融合的绞合线、绞合线、扭绞线或任何其他合适的导线结构。如图3更详细所示，切口70设置有陡边72以辅助牢固地接合插入的导线引线。
在本发明的另一实施例中，所述圆筒可以用在没有外壳20的PCB上。该另一实施例可以减小使用中的制造和材料成本，其中在所述使用中将圆筒与不希望的接触屏蔽开不是很重要。
在如图4和5所示的连接点的另一实施例中，圆筒20设置有另一连接点55。连接点55被表示成具有倾斜部分82以在连接到PCB的过程中辅助焊料回流。仍如图5所示，连接点55设置有基本水平的端部90和平的侧壁部分100。设置具有厚度为连接点55的总厚度的大约50％到70％的倾斜部分82改进了焊料的回流属性。倾斜部分82可以通过在模制操作中撞击连接点55的边缘得以形成，所述底面上的镀锡形成一定角度。倾斜部分82允许焊料更容易地弄湿成一定角度的锡面，产生不会另外形成的焊料圆角。
图6图示将SMEC 720用作系统以及用于将导线连接到PCB730的方法的应用。在该图中，SMEC 720被连接到PCB 730的表面。SMEC 720可以通过导电粘合剂或焊料被连接到PCB 730。PCB 730还支撑电阻器740和LEDs 750。导线引线760经由SMEC 720被连接到PCB 730。在该方法中，支撑LEDs的若干PCBs可以用导线串接以形成发光标记。
尽管已经参照优选实施例描述了本发明，但是本领域内的技术人员将认识到在不背离被发明的范围内可以进行各种修改以及可用等同物替换其中的元件。另外，在不背离其实质范围的情况下，可以进行许多修改以使特定情况或材料适合于本发明的教导。因此，意图是本发明不限于被公开为认为是实施本发明的最佳模式的特定实施例，但本发明将包括落入权利要求范围内的所有实施例。

Claims (9)

1.一种表面安装的插入式连接器(1)，其特征在于：
外壳(20)；
开口(30)，该开口位于外壳(20)中；以及
触头(40)，该触头至少部分由外壳(20)覆盖；
其特征在于，所述触头(40)包括：
用于接收和固定穿过所述外壳(20)中的开口(30)的导线引线的圆柱形部分(42)；
形成在所述圆柱形部分(42)中的狭槽(60)；
设置于形成在所述圆柱形部分(42)中的狭槽(60)中的切口(70)，所述切口(70)稍微凹入所述触头(40)从而在导线引线接收在所述触头(40)中的时候接合所述导线引线；和
连接到所述圆柱形部分(42)的连接点(50)，用于将所述触头(40)连接到印刷电路板，
其中所述连接点配置成将所述触头连接到所述印刷电路板而不让所述圆柱形部分接触所述印刷电路板，所述圆柱形部分平行于所述印刷电路板。
2.如权利要求1的连接器，其中触头(40)包含导电材料。
3.如权利要求2的连接器，其中所述导电材料包含镀锡的磷青铜金属。
4.如权利要求1的连接器，其中触头(40)的另一特征在于连接点(50)能够将触头(40)连接到印刷电路板。
5.如权利要求4的连接器，其中所述连接点(50)包含能够导电固定到印刷电路板的扁平部分。
6.如权利要求5的连接器，其中所述连接点(50)的另一特征在于倾斜部分(82)用于在焊接到印刷电路板的过程中改进焊料回流。
7.如权利要求1的连接器，其中外壳(20)包含两个或更多的固定机构。
8.如权利要求1的连接器，进一步包括连接到触头(40)的印刷电路板。
9.如权利要求1的连接器，其中所述外壳(20)允许所述触头(40)通过卡扣式部件由所述外壳(20)摩擦配合和保持。
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US11/615,235 US7513793B2 (en) 2006-12-22 2006-12-22 Surface mount poke in connector
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PCT/US2007/025872 WO2008082533A2 (en) 2006-12-22 2007-12-19 Low profile surface mount poke-in connector

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