A plug part for a subsea connector, the connector includes a plug and a receptacle. The plug part includes one or more female conducting contact assemblies each female conducting contact assembly including a female contact including inner and outer conducting surfaces, the inner conducting surface defining a cavity of the one or more female conducting contact assemblies and each female contact unit further including a shuttle pin adapted to receive a male contact pin of a receptacle. The female contact assembly further includes a solid insulator mounted radially outward of the external surface and forming an annulus between the outer surface of the female contact and an inner surface of the solid insulator and an orifice between the cavity and the annulus.

A modular connector system with components that can be economically assembled to both provide high signal integrity and supply reliable power in a harsh environment, such as an automobile. A connector includes a housing having a mating end, a back end, cavities extending from the mating end toward the back end, and latches extending inside the housing and having distal ends toward the back end. Signal and power terminal assemblies are disposed in respective cavities and engage respective latches. A signal terminal assembly includes a signal terminal, a signal cable attached to the signal terminal, and a shield substantially encircling the signal terminal and cable attachment. A power terminal assembly includes an insulative holder, a power terminal held in the insulative holder, and a power cable attached to the power terminal. Other disclosed techniques enable signal and power terminal assemblies stably and interchangeably disposed in the cavities.

Disclosed is a connector connection port formed by injection molding a polybutylene terephthalate resin material. A protruding boss part is provided on an outer or inner peripheral surface of the connector connection port. Voids are present in the boss part and a lower part of the outer or inner peripheral surface on which the boss part is provided. When a total of cross-sectional areas of voids in a region at a height of 0-0.5 mm from the outer or inner peripheral surface in the boss part is S1, a total of cross-sectional areas of voids in a region at a depth of 0-0.5 mm from the outer or inner peripheral surface on which the boss part is provided is S2, and a total of S1 and S2 is 100%, an areal ratio of S1 is 5% to 45% and an areal ratio of S2 is 55% to 95%.

Disclosed is a connector connection port formed by injection molding a polybutylene terephthalate resin material. A protruding boss part is provided on an outer or inner peripheral surface of the connector connection port. Voids are present in the boss part and a lower part of the outer or inner peripheral surface on which the boss part is provided. When a total of cross-sectional areas of voids in a region at a height of 0-0.5 mm from the outer or inner peripheral surface in the boss part is S1, a total of cross-sectional areas of voids in a region at a depth of 0-0.5 mm from the outer or inner peripheral surface on which the boss part is provided is S2, and a total of S1 and S2 is 100%, an areal ratio of S1 is 5% to 45% and an areal ratio of S2 is 55% to 95%.

An electrical connector includes an insulative housing, a plurality of conductive terminals and a metal shell. The housing includes a base portion, a tongue protruding forwardly from the base portion and a terminal fixing portion positioned behind the base portion; a groove is provided between the base portion and the fixing portion to allow glue to fill therein; the fixing portion is provided with at least one fencing portion at a side of the fixing portion adjacent to the groove, the fencing portion is formed with a hollow recessed groove therein. The terminals are provided to the housing; each terminal includes a mating portion exposed on the tongue, a soldering portion extending out of the fixing portion and a connecting portion connected between the mating portion and the soldering portion; a part of the connecting portion is exposed to the groove. The shell sheathes an outer circumference of the housing.

An electrical connector includes a connector housing configured to receive at least one electrical contact. The electrical connector further includes a circuit board enclosed within the connector housing. The electrical connector further includes at least one electrical lead configured to electrically connect the circuit board to the at least one electrical contact.

A heat sink assembly includes a casing having an opening, a main board accommodated in the casing, a heat sink mounted on the main board, an electrical connector mounted on the main board and exposed in the opening, a mating connector located outside the casing and connected to the electrical connector through the opening in a plugging manner, and a heat conductor, disposed inside the casing. The mating connector has a chip that is electrically connected to the electrical connector. One end of the heat conductor is connected to the heat sink, and the other end of the heat conductor is thermally connected to the electrical connector or the mating connector, so that heat generated by the chip during working can be transferred to the heat sink through the heat conductor, thereby reducing a temperature of the mating connector.

A heat sink assembly includes a casing having an opening, a main board accommodated in the casing, a heat sink mounted on the main board, an electrical connector mounted on the main board and exposed in the opening, a mating connector located outside the casing and connected to the electrical connector through the opening in a plugging manner, and a heat conductor, disposed inside the casing. The mating connector has a chip that is electrically connected to the electrical connector. One end of the heat conductor is connected to the heat sink, and the other end of the heat conductor is thermally connected to the electrical connector or the mating connector, so that heat generated by the chip during working can be transferred to the heat sink through the heat conductor, thereby reducing a temperature of the mating connector.

Provided is an electric conduction system and a male terminal that prevent arc discharge by cutting off power supply prior to the occurrence of arc discharge. The male terminal is connected to the female terminal of the electric conduction apparatus, and power is supplied from the electric conduction apparatus. The male terminal includes a first resistance portion having a resistance value R1 on its rear-end side and a second resistance portion having a resistance value R2 on its front-end side. Accordingly, the resistance value of the power supply path varies depending on the amount the male terminal is inserted into the female terminal. By determining whether the electric current amount varies in accordance with a change in the resistance value of the power supply path, the electric conduction apparatus can cut off power supply prior to the male terminal coming off the female terminal, thus preventing an arc discharge.

A plug connector capable of increasing the sealing between a rubber member and an outer circumferential surface of a spark plug insulator for improvement in current leakage resistance. The plug connector includes a conductive part that electrically connects a spark plug and a power supply member for power supply to the spark plug; and a rubber member that covers the conductive part. The spark plug has an insulator and a terminal electrode protruding toward the rear from a rear end of the insulator. The plug connector further includes a ring member arranged on an outer circumference of the rubber member.