Abstract:
A circuit board connector having a plurality of pairs of contacts arranged in a row and with each contact having a "C" shaped portion. Each pair of contacts is mounted securely at first ends thereof in a circuit board with the backs, or closed sides, of the "C" shaped portion facing each other and designed to receive the edge of a second circuit board inserted therebetween. The free end of each contact has an ear-like element extending outwardly from the board to which the contacts are secured. A connector housing fits over the pairs of contacts after they have been secured in the board. Inside the housing tabs are provided, behind which tabs the ears of the contacts are positioned, thereby prestressing each pair of contacts apart. The housing is also designed so that the side walls thereof press against a dimple or finger-like tang formed near the base of each contact, thereby forcing the contacts of each pair of contacts together and further enhancing the prestressing of each pair of contacts.
Abstract:
An electrical connector assembly (1) having a housing (10) and a subassembly (80) connected thereto for eliminating circuit-degrading EMI. Subassembly (80) includes a substrate (20) mounted to a frame (30). Substrate (20) comprises a rigid board with circuit traces (25,26), electrical components (28), and a pin array (22) thereby defining an electrical circuit path. Frame (30) is electrically connected to the circuit path and comprises a robust, metallic piece having locking clips (36) for electrically and mechanically attaching subassembly (80) to housing (10).
Abstract:
The disclosure relates to a tool for installing and removing a housing which is positioned over a row of connector pairs and frictionally engaged with the rows of connector pairs, there being no integral connection between the housing and the contacts. The tool is designed to remove the housing when positioned over the contact members by utilizing a wedge on the tool which separates the contact members so that the housing can be pulled up over the contact members without rubbing thereagainst to remove any plating layers thereon. The housing is installed by the same tool wherein the housing is gripped and, upon insertion of the housing over the contact members, the wedge first spreads the contact members apart and the housing is disposed thereover without rubbing against the contact members. In the case of installation and removal of the housing member, the wedge is designed to push the contacts sufficiently far back so that they do not rest upon a preloading bar disposed within the housing. In this way, the housing can be removed by merely gripping the housing with the tool while the contacts are spread apart and then rocking the housing back and forth so that it can be removed upwardly over the contact members without sliding over the edges of the contact members. The installation would also require a gripping of the housing member but would not require the rocking motion, the housing being installed by a direct downward force thereon.
Abstract:
A low profile contact, stamped or cut from a section of flat stock material, for receiving a male pin for connection to a lead of a printed circuit board, includes a cylindrically shaped pin receiving portion for insertion into a hole in the printed circuit board conterminous with the lead. A plurality of tabs extend upwardly from the top of the cylinder, and a pair of opposite tabs are bent intermediate their ends to partially extend into the cylinder to engage the inserted pin. The tabs are flared outwardly from the top of the cylinder to provide a guide to assist insertion of the pin into the cylinder and to provide a seat upon which the contact seats upon the surface of the circuit board. The cylinder is formed with a gap or space parallel to its axis to enable it to be radially compressed upon insertion into the hole of the printed circuit board to urge or bear outwardly upon the walls of the hole to establish firm physical and electrical contact therewith. A connection member is attached to the bottom of the cylinder and extends through the printed circuit board when the contact is installed to receive external connection.
Abstract:
A machine and a method for applying a solder resistant material or solder resist to predetermined portions of miniature connector structures are disclosed. The machine permits large numbers of the miniature connector structures to be precisely treated with the solder resist without the need for costly and time consuming masking procedures. More particularly, the miniature connector structures attached to a carrier strip are fed through a hybrid fluid dispensing assembly similar to a bath, which is continuously supplied with the solder resistant material. The quantity of material supplied to the hybrid fluid dispenser or bath is coordinated with the speed at which the miniature connector structures are driven through the bath so that each of the miniature structures absorbs a predetermined amount of solder resistant material by capillary action. The quantity of material absorbed by each of the miniature connector structures is controlled so that it is just sufficient to fill a desired area. The filled connectors are subsequently heated to cure the solder resistant material.
Abstract:
A tool set for installing and removing individual connector pins mounted in an electrical circuit board and the like and within a connector housing wherein the pin to be removed or installed is part of a row of pin pairs enclosed within a housing. A pin is installed and/or removed with the present tools without housing removal or disturbing of other pins within the housing, regardless of the type of pin damage encountered. There is also a tool for inserting tie pins in a circuit board in aligned relationship.
Abstract:
A printed circuit board connector is comprised of an elongated rectangular housing having a passageway in a longitudinal edge thereof for insertion of the board. A thin plate lever lying along the outer surface of each side wall of the housing and rockably mounted thereon, is provided at its free end with openings to capture the free ends of resilient contact members supported within the housing for retracting them against their bias from the path of a circuit board inserted in the passageway. A thin slidable cam plate between each of the side walls and plate levers cooperates with projections on the walls for causing them to move outward for pulling the contacts away from the passageway. A feature of the invention is that the housing and plate levers are all injection molded in one piece, and the levers are broken off the housing and rockably mounted thereon. The cooperating parts on the levers and side walls by which they can be assembled for relative rocking movement of the levers are integrally formed thereon in the molding process.
Abstract:
A tool for inserting either single loose pins or a plurality of pins or posts carried upon a mounting strip into holes of a substrate, such as a printed circuit board, in a continuous process and including a push blade and a carrier control blade for receiving the pins and the mounting strip which are carried upon a mounting frame. A plurality of ribs protrude upwardly from the push blade, forming grooves therebetween into which the pins to be aligned for insertion are positioned. A slideable, securing blade, carried upon the mounting frame, is moveable from a position away from the pins to a position engaging the pins to secure them in their aligned positions. A locking mechanism on the securing blade cooperates with the mounting frame to lock the securing blade in the engaging position. Upon insertion of the pins into the holes of the printed circuit board and the exertion of a pressure upon the securing blade, the locking mechanism releases, and a spring moves the securing blade back to its original position away from the pins, thereby enabling the mounting frame to be pushed further forward to cause the pins to be completely inserted into the holes of the printed circuit board.
Abstract:
An apparatus consisting of a pair of rollers with tangentially meeting perimeters for crimping successive portions of a continuous strip of solder into rings around a strip of terminal posts carried in parallel manner upon a common carrier strip. The roller perimeters each contain a circumferential track of crimping ridges which are both axially and angularly positioned to coincide with corresponding ridges on the other roller to crimp said solder strip around each post on the strip of terminal posts, both strips being simultaneously passed between the crimping tracks on said rollers. Each roller also comprises a circumferential track of spur-type gear teeth, the two tracks being axially offset on opposite sides of said crimping tracks and having bottom lands (the troughs of the teeth) which coincide when the teeth pass through the common tangential or pitch plane of the rollers.