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31.发明授权
公开(公告)号：US5865641A
公开(公告)日：1999-02-02
申请号：US536131
申请日：1995-09-29
申请人： Mark A. Swart , Charles J. Johnston
发明人： Mark A. Swart , Charles J. Johnston
IPC分类号： H01R35/00 , H01R11/18 , H01R12/71 , H01R12/72 , H01R13/05 , H01R13/08 , H01R13/24 , H01R35/02
CPC分类号： H01R13/2428 , H01R12/714 , H01R12/721 , H01R13/05 , H01R13/24
摘要： A solid spring electrical connector includes an elongated metal bar of sufficient cross sectional area to carry high electrical current loads. The bar is contained in a barrel with terminals of the bar projecting from opposite ends of the barrel. The bar is an integral piece which includes a spring section extending most of the length of the bar. The spring section is formed by axially spaced-apart, parallel, linear, narrow-profile notches of generally uniform width having alternating open ends facing toward opposite sides of the bar progressively along its length. Each notch extends across a major portion of the diameter of the bar thereby forming a resilient spring section in which the metal between adjacent notches forms the equivalent of long narrow flexible beams with alternating pivot points. In an alternate embodiment, electrical connectors adapted for mounting to printed circuit boards include a plurality of spring contacts in a row along the length of the connector. Each spring contact comprises one or more thin, flat, metal pieces with a spring section extending most of the length of each metal piece. The spring contacts are spaced-apart by insulating blocks interleaved between the contacts. The spring section of each flat metal piece includes long, narrow, parallel notches that alternately open to opposite sides of the metal piece. A multi-layer form of each contact includes overlying notched metal pieces positioned face to face with openings of corresponding notches in adjacent pieces facing in alternate directions to control high frequency response.
摘要翻译： 固体弹簧电连接器包括具有足够横截面积的细长金属棒，以承载高电流负载。 该杆被容纳在桶中，杆的端子从筒的相对端突出。 该杆是整体件，其包括延伸杆的大部分长度的弹簧部分。 弹簧部分通过轴向间隔开的平行，直线，窄轮廓的通常形成均匀宽度的凹口形成，其交替开口端沿其长度逐渐朝向杆的相对侧。 每个切口延伸穿过杆的直径的大部分，从而形成弹性弹簧部分，相邻凹口之间的金属形成相当于具有交替枢转点的长的窄的柔性梁。 在替代实施例中，适于安装到印刷电路板的电连接器包括沿连接器长度的一排中的多个弹簧触点。 每个弹簧触点包括一个或多个薄的平坦的金属件，弹簧部分延伸每个金属件的大部分长度。 弹簧接触件通过在触头之间交错的绝缘块间隔开。 每个扁平金属片的弹簧部分包括长而窄的平行的切口，它们交替地向金属片的相对侧开口。 每个触点的多层形式包括与面对面相对的切口的开口面对面定位的上覆凹口金属片，以相互交替的方向面对，以控制高频响应。
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公开(公告)号：USD395016S
公开(公告)日：1998-06-09
申请号：US65622
申请日：1997-01-31
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公开(公告)号：US5663655A
公开(公告)日：1997-09-02
申请号：US532400
申请日：1995-09-22
CPC分类号： G01R1/06722 , G01R1/07314 , G01R1/07385 , G01R1/18
摘要： A test fixture provides ESD protection to electronic switching circuitry in a universal grid type fixture having test probes arranged for electrical contact with a printed circuit board under test and in which test signals are sent between the circuit board and a high speed electronic test analyzer through intervening switching circuits. The test fixture includes a movable probe plate, a test probe mounted in the probe plate, the test probe including a movable plunger for making electrical contact with a printed circuit board during a test cycle, the plunger being movable between a first position and a second position, and a ground plane on the movable probe plate connected to electrical ground, the probe plunger having a ground plane contact element that contacts the ground plane in said first position of the plunger and which moves out of the contact with the ground plane when the plunger moves to the second position. The probe plate, is moved to a pre-test position in which the plunger is in the first position and in an electrical contact with the circuit board so that electrostatic charges on the board are dissipated to electrical ground through the ground plane via contact between the ground plane contact element of the plunger and the ground plane. The probe plate is moved to a test position after a preset time delay in which the plunger is compressed under a test force that moves the plunger to the second position out of contact with the ground plane to electrically isolate the plunger for conducting the test after electrostatic charges have been dissipated.
摘要翻译： 测试夹具为通用格栅型夹具中的电子开关电路提供ESD保护，其具有布置成与被测印刷电路板电接触的测试探针，并且其中测试信号通过介入在电路板和高速电子测试分析仪之间发送 开关电路。 所述测试夹具包括可移动探针板，安装在所述探针板中的测试探针，所述测试探针包括用于在测试循环期间与印刷电路板电接触的可移动柱塞，所述柱塞可在第一位置和第二位置之间移动 位置和连接到电气接地的可移动探针板上的接地平面，探针柱塞具有接地平面接触元件，接地平面接触元件在柱塞的所述第一位置接触接地平面，并且当该位置移动离开与接地平面的接触时 柱塞移动到第二位置。 探针板移动到预测位置，在该位置中柱塞处于第一位置并与电路板电接触，使得板上的静电电荷通过接地平面通过接地平面而被耗散到电接地 柱塞的接地平面接触元件和接地平面。 探针板在预设的时间延迟之后移动到测试位置，其中柱塞在试验力下被压缩，该试验力将柱塞移动到与接地平面接触的第二位置，以电隔离柱塞以进行静电测试 收费已经消散。
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公开(公告)号：US5408189A
公开(公告)日：1995-04-18
申请号：US990573
申请日：1992-12-14
IPC分类号： G01R31/02 , G01N21/88 , G01N21/93 , G01N21/956 , G01R1/073 , G01R31/28 , H04N7/18 , G01R1/04
CPC分类号： G01R1/07314 , G01R1/07328 , G01R31/2891
摘要： A test fixture for testing circuit boards includes an array of test probes mounted to a probe plate and held in contact with test points in circuits printed on the board. The circuit array is indexed with respect to a fiducial mark on the board. The fiducial mark is sensed, and an optical reading shows the alignment or misalignment of the test points on the board relative to the probes. The top plate position is adjusted to move the board relative to the probes to correct misalignment. The optical reading indicates movement of the board to a corrected position necessary to align the test points to the probes. Board alignment can be optically sensed by a bore scope and an image enlarger and video probe that produce images of the fiducial mark and a known zero reference point on a video monitor. The zero reference is adjustable electronically during calibration. The top plate is movable by X- and Y-axis drive motors coupled to the fixture base and having separate output shafts for shifting the top plate in X, Y and Z-axis orientations. The drive motors are stopped when alignment is made and the top plate is retained in its fixed position during testing of the board.
摘要翻译： 用于测试电路板的测试夹具包括安装到探针板并与印刷在电路板上的电路中的测试点保持接触的测试探针的阵列。 电路阵列相对于电路板上的基准标记进行索引。 感测到基准标记，并且光学读数显示板上相对于探针的测试点的对准或未对准。 调整顶板位置以使板相对于探针移动以校正未对准。 光学读数指示板的运动到校准位置，以将测试点对准探针。 可以通过孔范围以及在视频监视器上产生基准标记图像和已知零参考点的图像放大器和视频探头来光学检测板对准。 零参考在校准期间可以电子调节。 顶板可以通过联接到固定座的X轴和Y轴驱动马达来移动，并具有用于在X，Y和Z轴方向上移动顶板的单独的输出轴。 当对准时驱动电机停止，并且在板的测试期间顶板保持在其固定位置。
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公开(公告)号：US5321351A
公开(公告)日：1994-06-14
申请号：US648453
申请日：1991-01-31
CPC分类号： G01R1/07314 , G01R1/07328 , G01R31/2891
摘要： A test fixture for testing printed circuit boards includes an array of test probes held in contact with a pattern of test points in a circuit array printed on the circuit board. The circuit array is positioned on the board with respect to a fiducial mark on the board, and a tooling pin hole on the board is aligned with the circuit array. The fixture includes a tooling pin inserted in the tooling pin hole to hold the circuit array in a fixed position relative to the test probes during testing. The fiducial mark is sensed, and an optical reading shows the alignment or misalignment of the test points on the board relative to the probes. The tooling pin is adjusted on the fixture to move the board relative to the probes to correct misalignment. The optical reading indicates movement of the tooling pin and board to a corrected position necessary to align the circuits on the board to the probe field. The alignment of the board on the fixture can be optically sensed by a lens system, fiber optic image conduit, light source, an image enlarger and video probe, removable from the fixture base, that produces images of the fiducial mark and a known zero reference point on a TV monitor. The zero reference is adjustable electronically during calibration. Alignment of the fiducial mark image to the reference point image produces precise alignment of the test probes and the circuit array.
摘要翻译： 用于测试印刷电路板的测试夹具包括与印刷在电路板上的电路阵列中的测试点的图案相接触的测试探针阵列。 电路阵列相对于电路板上的基准标记位于电路板上，电路板上的工具针孔与电路阵列对准。 夹具包括插入工具销孔中的工具销，以在测试期间将电路阵列相对于测试探针固定在固定位置。 感测到基准标记，并且光学读数显示板上相对于探针的测试点的对准或未对准。 在夹具上调整模具销以相对于探头移动板，以校正未对准。 光学读数指示工具销和板移动到校准位置，将校准板上的电路对准探针场。 可以通过透镜系统，光纤图像导管，光源，可从基座移除的图像放大器和视频探头来光学地检测固定器上的板的对准，其产生基准标记的图像和已知的零参考 点在电视监视器上。 零参考在校准期间可以电子调节。 基准标记图像与参考点图像的对准产生测试探针和电路阵列的精确对准。
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公开(公告)号：USD343802S
公开(公告)日：1994-02-01
申请号：US906278
申请日：1992-06-26
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公开(公告)号：US5270641A
公开(公告)日：1993-12-14
申请号：US824854
申请日：1992-01-22
CPC分类号： G01R31/2808 , G01R1/07335
摘要： A dual side access test fixture tests circuits on both sides of a printed circuit board. The fixture includes a housing, a lower probe plate in the housing, an array of lower test probes in the lower probe plate for contacting the bottom of the board, an upper probe plate on the housing for moving to a closed position above the board, and an array of upper test probes in the upper probe plate for contacting an upper surface of the board when the upper probe plate closed. A plurality of system interface pins in the housing are electrically connected to the lower test probes. An external upper interface connector mounted over the closed upper probe plate has a plurality of contacts for connection to corresponding upper test probes. Flex cables contained within the upper interface connector conduct test signals from the upper test probes directly to an external electronic circuit tester. A first set of test signals is communicated from the lower test probes through the interface pins to the circuit tester. Separately, a second set of test signals is communicated from the upper test probes through contacts in the upper interface connector to the flex cables and to the circuit tester, via direct electrical connections which circumvent electrical feed-through connections within the interior of the vacuum fixture housing.
摘要翻译： 双面访问测试夹具测试印刷电路板两侧的电路。 所述固定装置包括壳体，所述壳体中的下探针板，所述下探针板中的用于接触所述板底部的下测试探针阵列，所述壳体上的上探针板移动到所述板上方的闭合位置， 以及上部探针板中的上部测试探针的阵列，用于当上部探针板关闭时接触板的上表面。 壳体中的多个系统接口引脚电连接到下部测试探针。 安装在闭合的上探针板上的外部上接口连接器具有用于连接到相应的上测试探针的多个触点。 上部接口连接器中包含的Flex电缆将测试信号从上部测试探头直接传递到外部电子电路测试仪。 第一组测试信号通过接口引脚从下测试探针传送到电路测试仪。 另外，第二组测试信号通过直接电气连接从上部测试探头通过上部接口连接器中的触点传送到柔性电缆和电路测试仪，这些直接电气连接避开了真空夹具内部的电气馈通连接 住房。
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公开(公告)号：US4720275A
公开(公告)日：1988-01-19
申请号：US851334
申请日：1986-04-14
申请人： Mark A. Swart , Charles J. Johnston
发明人： Mark A. Swart , Charles J. Johnston
CPC分类号： H01R11/18 , C02F1/4674 , H01R4/70 , Y10T29/49174
摘要： A quick termination assembly for an electrical connector to a flexible wire. The connector comprises an electrical conductive tube. The tube has separate end opening and side opening to the passage and a ramp facing out of and extending towards the side opening from the passage. The end opening and passage are adapted to receive a bare end of the wire upon insertion therein, the ramp, during such insertion, forcing the bare wire to bend and move along the ramp out of the side opening to a position extended away from the tube. A non-conductive sleeve extends around the wire. The sleeve, as it is forced to slide along the wire and tube, engages the extended bare wire, causing the bare wire to bend against an exterior side of the tube and pass over and encircle the bare wire and tube, thereby gripping and retaining the bare wire and tube in electrical and mechanical contact with each other.
摘要翻译： 用于电连接器到柔性线的快速端接组件。 连接器包括导电管。 该管具有分开的端部开口和通向该通道的侧面开口以及从通道朝向侧面开口的斜面。 端部开口和通道适于在插入时容纳线的裸露端，斜槽在插入期间迫使裸线弯曲并沿着斜面从侧开口移出到远离管延伸的位置 。 非导电套筒围绕电线延伸。 当被迫沿着电线和管子滑动时，套筒与扩展的裸线接合，导致裸线弯曲抵靠管的外侧，并且越过并围绕裸线和管，从而夹紧并保持 裸电线和管子彼此电气和机械接触。
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