Abstract:
A simple and highly effective method and apparatus for field terminating flat power cable such as used in undercarpet wiring systems. Each conductor, with tightly bonded insulation, of a multi-conductor flat power cable is (at the point of installation in-situ) slotted or cut through with thin narrow slots which leave corresponding narrow rectangular openings through the insulation and conductor. Then a thin conductive device or terminal with corresponding ribs which easily though precisely fit into the slots, is placed in the slot openings, is secured in place on the cable by a suitable means, and the assembly then crimped or flattened together to give a pressure-tight high-conductivity, electrically stable termination only about twice as thick as the insulated conductor. The applicator tooling may be a simple punch and die, and a hammer or pliers. An insulating "bandage" is applied over the termination and bonded to the conductor insulation thereby giving a water-tight joint impervious to corrosion. The metal or steel top shield required by the National Electrical Code is similarly terminated in order to assure "ground" continuity.
Abstract:
A header for an electronic circuit includes two complementary portions. The electronic circuit is a flexible circuit with leads on opposite side edges. The opposite side leads are received by the header portions and fixed in place as by epoxy. The two header portions are then snapped together to form the header. One of the header portions includes tongues which are received in slots of the other header portions for maintaining alignment of the two portions. Clips are provided on each of the header portions for interconnecting with complementary clips of the other header portion.
Abstract:
A connection for flexible circuits permits one or more flexible circuits such as flat flexible cables to be connected to a standard and widely used electrical connector such as a printed circuit board edge connector. The connection includes a substantially rigid flexible circuit structure having a carrier of flat planar configuration with opposed surfaces. A flexible circuit is adhesively bonded to at least one surface with conductive traces of the circuit exposed. Electrical connections are made to the traces by inserting the carrier with attached flexible circuit into a connector having a housing supporting a plurality of terminals with contact portions in a linear array engageable with the exposed conductive traces of the flexible circuit.
Abstract:
A terminal connector assembly for removably receiving end portions of a multiconductor cable includes a terminal block defining an array of interior elongate cavities. Each cavity is provided with a generally U-shaped terminal member having a pair of opposing spaced-apart side arms and an integral pair of opposing protruding contact portions. The protruding contact portions establish therebetween an entranceway of reduced cross-sectional dimension such that upon insertion of an end portion of the multiconductor cable therebetween, the contact portions establish electrical contact therewith. A housing cover is also disclosed whereby peninsular portions thereof are capable of resilient displacement so as to release gripping engagement with the multiconductor cable to permit withdrawal thereof while yet being resiliently biased into gripped engagement with the multiconductor cable when the latter is inserted into the terminal connector assembly so as to assist in maintaining electrical contact between the multiconductor cable and the protruding contact portions of the U-shaped terminal member.
Abstract:
A flexible carrier film with a printed circuit thereon is provided in comation with a terminal device which provides a plurality of terminal connection pins. A first part of the printed circuit contains a plurality of conductors, and a second part contains a plurality of resistor strips for supplying voltage levels to each conductor. In order to connect the first and second parts without crossings, a grid of connection strips is provided between the conductor strips and resistor strips and connected thereto. The film is bent along a score line extending through the grid and at a right angle thereto, with the conductor strips and resistor strips located on the outside of the folded film. The film is then clamped to the terminal device at the score line so that each connection strip is clamped on both sides of the score line.
Abstract:
A flexible printed circuit connector comprises a stabilizer plate and a flexible printed circuit which have a corresponding pattern of holes which receive contact eyelets which attach the flexible printed circuit to the stabilizer plate. The contact eyelets comprise a tubular body having a flange at one end with depending crimp ears at the rim of the flange which pierce through and extend inwardly to clamp the flexible printed circuit against the flange, and depending crimp ears at the opposite end of the tubular body which extend outwardly to clamp the stabilizer plate and the flexible printed circuit against the flange. The stabilizer plate and the contact eyelets are configured for simultaneously crimping all crimp ears of each eyelet.
Abstract:
A flat electrical cable for use under a rug or carpet having a series of regularly spaced elongate apertures in a web of insulating material along one edge of the cable. "U" shaped conductive connectors are used to secure adjacent cables together with an upper segment of the connector passing through an aperture of each cable so as to properly position the cables in respect to each other and electrically connect the cable conductors by means of sharpened pawls on the connector which pierce the plastics insulation of each cable.
Abstract:
In order to make a ground connection between a printed circuit mounted on the back of an instrument panel housing and the metal frame of an instrument within the panel, a flexible spring clip is fixed to a pin projecting from the back of the housing and has a pair of legs straddling the pin each terminating in a contact which conductively engage the printed circuit and the instrument frame respectively. An aperture in the housing allows one leg of the spring clip to extend into the housing adjacent the instrument.
Abstract:
A connector for effecting releasable contact between individual electrical conductors of a printed circuit board and corresponding overlapping exposed conductors of a flat multiconductor cable comprises an elongate U-shaped resilient member having a pair of longitudinally extending legs. A plurality of cantilevered spring members are spaced longitudinally along one of said legs, projecting transversely therefrom in a direction toward the other leg. Means are provided for releasably affixing the connector to the board such that the spring members are positioned in registry with the overlapping conductors. The spring members are dimensioned with respect to the affixing means such that when the connector is assembled to the board the spring members engage and resiliently press the overlapping exposed cable conductors against the corresponding circuit board conductors thereby establishing electrical connection therebetween. A cantilevered member extending lengthwise on the other leg substantially opposite the spring members is dimensioned with respect to the affixing means so as to press the connected cable against the circuit board thereby providing strain relief therefor.
Abstract:
An insulator for covering an electric cable has circular recesses for receiving any portions of a connector which extend beyond a surface of the cable covered by the insulator. If the connector extends between overlapping portions of a pair of cables, the connector and the overlapping portions of the cables can be completely enveloped by sandwiching them between a pair of insulators. The diameter of each recess is chosen so as to closely accommodate the extending portions of its associated connector and to provide a substantial barrier of insulation about the connector out to the edges of the cables being joined to prevent moisture, dirt and other contaminents from reaching the connector and causing its degradation or shorting.