Abstract: The electrical connector in accordance with the present invention may be distributed with the shield frame thereof temporarily mounted on the connector body thereof. While the shield frame is temporarily mounted, a portion of the connector body is restrained between engagement pawls or projections formed on the shield frame. While the shield frame is temporarily mounted, the shield frame is backed up by the connector body, thus preventing the shield frame from being readily deformed. When the shield frame is pushed to the connector body with a force sufficient to resiliently deform the engagement pawls on the shield frame, the shield frame may be moved from a temporary-fitting position to a final-fitting position.

Abstract: In a jack which has in its body a tip contact piece for engagement with a tip electrode of a plug when the plug is inserted into the jack body through its plug insertion hole, the tip contact piece is a U-shaped metal piece whose two legs form first and second contact pieces for gripping therebetween the tip electrode of the plug. The first contact piece is longer than the second one and its forward end is inwardly convexed to form an engaging protrusion for engagement with the neck of the tip electrode. The engaging protrusion extends into the plug insertion hole to a depth of about 20% of its inner diameter. When the plug is inserted into the jack body, a forward contact portion of the second contact piece resiliently contacts the crest of the tip electrode after the latter has moved past the engaging protrusion of the first contact piece.

Abstract: A multiple connector has an insulating body which contains a plurality of pin contacts arranged in rows and columns of a matrix. The insulating body is inserted securely in the front end portion of a cylindrical metal shielding body. Front end faces of contact holding plates holding these pin contacts in a row or a column arrangment are held in abutment with the rear face of the insulating body. The contact holding plates respectively have contact holding grooves formed therein to extend in a front and rear direction. Cord connection portions of the pin contacts extending or projecting from the rear face of the insulation body are pressed into and secured to these contact holding grooves. The cord connection portion has a press-in contact portion formed integrally therein and the press-in contact portion has a slot of a width smaller than the diameter of a core bundle of the cord to be connected.

Abstract: The present invention relates to an electrical connector comprising a shielding frame having a casing portion, a U-shaped portion and a flat-plate portion which are integrally formed. The casing portion covers the contacts of contact pieces. The U-shaped portion covers the top surface and left-hand and right-hand lateral sides of the main body of a contact piece supporting member which houses the terminal portions of the contact pieces. The flat-plate portion covers the back side of the main body of the contact piece supporting member. Accordingly, the frame substantially perfectly surrounds the contact pieces, thus producing a shielding effect. Except for the bottom of the connector, the contact pieces may be generally surrounded by merely turning the flat-plate portion at the boundary thereof with respect to the U-shaped portion, after the contact piece supporting member assembled with the contact pieces has been assembled with the U-shaped portion and the casing portion.

Abstract: The present invention concerns a diaphragm unit for a condenser microphone and a method of making the same. A conventional condenser microphone is complex in construction and the tension of its diaphragm is readily affected by temperature because first and second rings for holding the diaphragm therebetween and a cylindrical pressing member for pressing the diaphragm to apply tension thereto are separately prepared and mounted in a cylindrical housing. The present invention offers a one-piece diaphragm unit for a condenser microphone in which the diaphragm is held, with predetermined tension, between metallic first and second rings. Preferably, one of the first and second rings is provided with an edge flange which is raised about its inner periphery and extends inwardly of the other ring, biasing thereinto the diaphragm. When the diaphragm unit is built in the condenser microphone, a support plate of an insulating material is disposed in engagement with the first ring.

Abstract: The rear portion of a rectangular body of an insulating material is made hollow, and the forward portion of the body has contact housing holes extending from the front thereof to the hollow and arranged in a matrix form in the front thereof, socket contacts being housed in the contact housing holes. The rear end portions of the socket contacts are bent at right angles in the hollow and led out of the body through terminal insertion holes of a holder which forms the bottom of the hollow. The rectangular body is fitted in a square tubular shield cover produced by punching a metal plate, pressing and bending it into the desired shape. The body and the shield cover define therebetween a square groove for receiving a metal cover of the mating plug. The top panel of the shield cover has an engaging key protruding outwardly therefrom, and the key has in its top an inward protrusion for locking use.

Abstract: In a cathode ray tube socket which is provided with a socket body having a plurality of contacts disposed in a circle and a high voltage discharge gap housing provided on one side of the socket body, there are provided along the inside surface of both a case forming the high voltage discharge gap housing and a cover to be put on the case on the side of its open end face a plurality of plate-shaped ribs extending in a direction across a high voltage discharge in the high voltage discharge gap housing. The ribs of the case and the cover are disposed at predetermined intervals so that they do not overlap each other. A meandering ridge is formed along one of the opposed side walls of the case and cover to define a gap therebetween.

Abstract: The electrical connector in accordance with the present invention may be connected to, for example, other connector mounted on a circuit board of a machine. This electrical connector is provided at one end of the housing thereof with a board connection space into or from which a circuit board incorporated in a game cassette or the like may be inserted or removed. This electrical connector is provided at the other end of the housing thereof with a connector connection portion into or from which said other connector is adapted to be inserted or removed. Thin plate-like contact members extending over the board connection space and the connector connection portion are inserted from the side of the connector connection portion into the housing of this electrical connector. The contact members are provided at the base ends thereof with transversely turned projecting pieces. By applying a punch to the projecting pieces, the contact members may be readily pushed into the housing without the contact members damaged.

Abstract: A jack with a switch, the body of which is formed of an insulating material and has formed therein a plug receiving hole and a switch housing portion extending from the back of the body in parallel to but separated by a partition wall from the plug receiving hole. The partition wall has a hole through which the plug receiving hole and the switching housing portion communicate with each other. In the switch housing portion there are disposed a fixed contact piece and an elastic movable contact piece which constitute the switch. A separator is interposed between the movable contact piece and the partition wall, and an actuating projection formed at the tip end portion of the separator protrudes into the plug receiving hole through the hole made in the partition wall. By inserting a plug into or pulling it out of the plug receiving hole, the actuating projection is driven to effect ON/OFF control of the fixed and movable contact pieces of the switch.

Abstract: The disclosed connector is featured in prevention of static charges which are prone to generate and to give damage to the built-in circuits.

Abstract: The present invention relates to an IC card connector in whcih an IC card is inserted into gaps between a contact arrangement surface formed in a housing of the connector, and a pushing plate vertically movable with respect to the housing. After the IC card has been inserted, the pushing plate is pushed toward the contact arrangement surface by pushing mechanisms, so that the IC card is contact-pressed to the contacts on the contact arrangement surface, through the pushing plate. The pushing mechanisms may be formed by, for example, levers rotatable between first positions where the levers cross the pushing plate immediately above the same and second positions where the levers do not cross the pushing plate.

Abstract: The inventive pin plug connector is advantageously applied to connection of a coaxial cable for electronics, in particular, in audio and video devices. The coaxial cable for such usage comprises a core conductive line, an insulative layer covering the core line, and an outer conductive line defined of networks knitted of thinned copper lines to cover the inner insulative layer. Conventionally, the prior job of taking the network outer line from the cable was needed, but troublesome.

Abstract: A source electrode and a drain electrode are formed apart on an insulating substrate, and a semiconductor layer is formed on the substrate between the source and drain electrodes. An insulating organic molecular film is formed all over the source and drain electrodes and the semiconductor layer. Ions are implanted into a selected top surface region of the insulating organic molecular film, corresponding to the semiconductor layer, by which chains of molecules in the surface region are cut to form free carbon, providing a conductive gate electrode.

Abstract: A card connector capable of preventing the contact pieces from applying a resilient contact force to a card when the card is inserted in and removed from the card connector. Thus, the card may be readily inserted and removed with a small force. If the card is not inserted in a normal posture with the wrong side up or with the rear end first, the card is automatically discharged from the card connector.

Abstract: In a plug with a cord, the plug body with a plurality of contacts received in its contact receiving holes has a clamper fixing slot in its rear portion and a clamper put on the cord having its core conductors connected to the contacts has a forwardly projecting coupling piece for engagement with the clamper fixing slot. The plug body is received in a cap having at its rear end a flexible cord protecting portion, through which the cord is led out of the cap.

Abstract: In the card connector disclosed by the present invention, a movable member is disposed between left- and right-hand arms (8) of a U-shape slide (8) housed in a housing (15). The movable member (15) is movable between a first position where the contacts (13) of the contact pieces (13) held by the housing are separated from a card setting position and a second position where the contacts project into the card setting position. The movable member is displaced with the movement of the slider. When a card (8) is not being inserted and the slider (8) is located in the advance position, the movable member is held at the first position above-mentioned. When the card is inserted and at least the slider reaches the retracted position, the movable member is held at the second position. When the movable member is held at the second position, the contacts come in contact with external terminals of the card.