Plug connector, receptacle connector and electrical connector assembly

A receptacle connector, comprising a receptacle power housing, a receptacle signal housing, a row of receptacle power contacts and a row of receptacle signal contacts;

• wherein
• the receptacle power housing including a power base and a row of parallel vertical power mating bodies, the row of the power mating bodies being in parallel and protruding forward from a front surface of the power base to form a row of vertical receptacle power ports, the row of the receptacle power ports including at least one first receptacle power port and at least one second receptacle power port;
• a rear surface of the power base forming a row of receptacle power contact-mounting cavities that include at least one first receptacle power contact-mounting cavity and at least one second power contact-mounting cavity, each of the receptacle power contact-mounting cavities forming two receptacle power contact-receiving passages that pass through the rear surface and a bottom surface of the power base to receive and fix the corresponding receptacle power contacts;
• the power base forming a concave space on the bottom surface thereof, the concave space having a top wall, a rear wall and two opposite side walls;
• the rear wall forming a row of receptacle signal contact-receiving passages that pass through the bottom surface of the power base to receive and fix the receptacle signal contacts;
• the receptacle signal housing including a flat signal base and a flat horizontal signal mating body, the signal mating body horizontally protruding forward from a front surface of the signal base;
• the signal base being embedded into the concave space of the power base, the signal mating body being located under the power mating bodies;
• the signal base forming a row of signal holes to receive the receptacle signal contacts, a front surface of the signal mating body forming a row of receptacle signal ports that extend backward to the signal base and are respectively communicated with the corresponding signal holes;
• each two adjacent receptacle power contacts having symmetrical structures and forming a group, each group being fixed in one receptacle power contact-mounting cavity, and each receptacle power contact being mounted in the corresponding receptacle power contact-receiving passage;
• each receptacle power contact including an L type vertical plate, at least one elastic piece being bent from a front edge of the vertical plate and extending forward, and a tail portion vertically extending downward from a bottom edge of the vertical plate;
• the vertical plate being fixed in the corresponding receptacle power contact-receiving passage, the elastic piece being inserted into the corresponding receptacle power port, and the tail portion extending out of the bottom surface of the power base;
• and
• each receptacle signal contact including a horizontal plate, a forked head horizontally extending forward from a front edge of the horizontal plate, and a tail end being bent downward from a rear edge of the horizontal plate;
• the horizontal plate being fixed in the corresponding signal hole, the forked head entering into the corresponding receptacle signal port, and the tail end extending along the corresponding receptacle signal contact-receiving passage and extending out of the bottom surface of the power base.

An electrical connector assembly, comprising:

• a plug connector comprising a plug housing, a plug retaining seat, a row of plug power contacts and a row of plug signal contacts;
• wherein
• the plug housing having a mating portion located on the front of the plug housing and a mounting portion located on the rear thereof, a front surface of the mating portion being perpendicular to a bottom surface of the mounting portion, a front surface of the mating portion forming a row of parallel vertical plug power ports and one plug signal port located under the row of the plug power ports to form a stacked structure, the row of the plug power ports including at least one first plug power port and at least one second plug power port, the first plug power port forming a vertical middle plate therein, the plug signal port having an open bottom and having a top wall and two opposite sidewalls, the mounting portion forming a row of plug power contact-mounting cavities that include at least one first plug power contact-mounting cavity and at least one second plug power contact-mounting cavity, each of the plug power contact-mounting cavities forming two plug power contact-receiving passages that pass through a rear surface and the bottom surface of the mounting portion to receive and fix the plug power contacts, the plug power contact-receiving passages located in the first and second plug power contact-mounting cavity being respectively communicated with the first and second plug power ports;
• the mounting portion further forming a row of plug signal contact-receiving passages that are located on the bottom surface of the mounting portion and communicated with the plug signal port to receive the corresponding plug signal contacts;
• the plug retaining seat being drawer-shaped and having a bottom board, two opposite side boards and a rear board;
• the plug retaining seat being mounted on the mating portion of the plug housing to close the open bottom of the plug signal port and fix the plug signal contacts;
• each two adjacent plug power contacts having symmetrical structures and forming a group, each group being fixed in one plug power contact-mounting cavity, and each plug power contact being fixed in the corresponding plug power contact-receiving passage;
• each of the plug power contacts including an L-type connecting portion being vertical and blade-shaped, a vertical blade-shaped mating end being bent toward one side from a front end of the connecting portion and then horizontally extending forward, and a back end vertically extending downward from a bottom end of the connecting portion;
• wherein the mating end passes through the corresponding plug power contact-receiving passage to enter into the corresponding plug power port, the connecting portion is fixed in the plug power contact-receiving passage, and the back end extends out of the bottom surface of the mounting portion;
• and
• each of the plug signal contacts including a head horizontally extending forward, a tail being perpendicular to the head and vertically extending downward, and an L type retaining portion connecting the head and the tail;
• wherein the head is inserted into the plug signal port, one portion of the L type retaining portion is fixed in the plug signal contact-receiving passage, the other portion thereof is fixed in the plug retaining seat, and the tail extends out of the bottom surface of the mounting portion;
• and
• a receptacle connector comprising a receptacle power housing, a receptacle signal housing, a row of receptacle power contacts and a row of receptacle signal contacts;
• wherein
• the receptacle power housing including a power base and a row of parallel vertical power mating bodies, the row of the power mating bodies being in parallel and protruding forward from a front surface of the power base to form a row of vertical receptacle power ports, the row of the receptacle power ports including at least one first receptacle power port and at least one second receptacle power port;
• a rear surface of the power base forming a row of receptacle power contact-mounting cavities that include at least one first receptacle power contact-mounting cavity and at least one second power contact-mounting cavity, each of the receptacle power contact-mounting cavities forming two receptacle power contact-receiving passages that pass through the rear surface and a bottom surface of the power base to receive and fix the corresponding receptacle power contacts;
• the power base forming a concave space on the bottom surface thereof, the concave space having a top wall, a rear wall and two opposite side walls;
• the rear wall forming a row of receptacle signal contact-receiving passages that pass through the bottom surface of the power base to receive and fix the receptacle signal contacts;
• the receptacle signal housing including a flat signal base and a flat horizontal signal mating body, the signal mating body horizontally protruding forward from a front surface of the signal base;
• the signal base being embedded into the concave space of the power base, the signal mating body being located under the power mating bodies;
• the signal base forming a row of signal holes to receive the receptacle signal contacts, a front surface of the signal mating body forming a row of receptacle signal ports that extend backward to the signal base and are respectively communicated with the corresponding signal holes;
• each two adjacent receptacle power contacts having symmetrical structures and forming a group, each group being fixed in one receptacle power contact-mounting cavity, and each receptacle power contact being mounted in the corresponding receptacle power contact-receiving passage;
• each receptacle power contact including an L type vertical plate, at least one elastic piece being bent from a front edge of the vertical plate and extending forward, and a tail portion vertically extending downward from a bottom edge of the vertical plate;
• the vertical plate being fixed in the corresponding receptacle power contact-receiving passage, the elastic piece being inserted into the corresponding receptacle power port, and the tail portion extending out of the bottom surface of the power base;
• and
• each receptacle signal contact including a horizontal plate, a forked head horizontally extending forward from a front edge of the horizontal plate, and a tail end being bent downward from a rear edge of the horizontal plate;
• the horizontal plate being fixed in the corresponding signal hole, the forked head entering into the corresponding receptacle signal port, and the tail end extending along the corresponding receptacle signal contact-receiving passage and extending out of the bottom surface of the power base;
• wherein when the plug connector is engaged with the receptacle connector, the power mating bodies and the signal mating body of the receptacle connector respectively entering into the corresponding plug power ports and the plug signal port of the plug connector, the plug power contacts and the plug signal contacts respectively entering into the receptacle power ports and the receptacle signal ports, the vertical blade-shaped mating end of the plug power contact being inserted between the elastic pieces of the corresponding two receptacle power contacts, and the head of the plug signal contact being inserted into the forked head of the corresponding receptacle signal contact.