Electric power connector and electric power connector assembly

A connection structure of connectors, comprising:

• at least two connectors having identical size and shape, each of which comprises:
• a casing having an open end defined by a first cavity and a second cavity adjacent to said first cavity, wherein a cross-section area of said first cavity is bigger than that of said second cavity, wherein a cross-section of said casing is substantially -shape;
• a first L-shaped retaining piece disposed in said first cavity and a second L-shaped retaining piece disposed in said second cavity and having a specific distance away from said open end, wherein said first retaining piece and said second retaining piece cooperate with each other to form an opening and a receiving space therebetween, said first retaining piece is disposed above said second retaining piece, and said first retaining piece and said second retaining piece respectively form gaps with an upper and a lower inner sidewalls of said casing;
• and
• a conductive terminal with one end disposed in said receiving space formed between said first retaining piece and said second retaining piece, wherein said casing carries a resilient piece therein, and one end of said resilient piece is fixed to or propped up from said lower inner sidewall of said casing and the other end of said resilient piece is contacted with one end of said conductive terminal;
• thereby said two connectors are connected with each other by inserting said second cavity of each connector into said first cavity of the other connector to make said conductive terminals in said casings of said two connectors contact with each other.

A connector assembly, comprising:

• a plurality of connectors, each of which comprises:
• a casing having an open end, wherein a cross-section of said casing is substantially -shaped;
• a first L-shaped retaining piece disposed in a first cavity and a second L-shaped retaining piece disposed in a second cavity and having a specific distance away from said open end, wherein said first retaining piece and said second retaining piece cooperate with each other to form an opening and a receiving space therebetween, said first retaining piece is disposed above said second retaining piece, and said first retaining piece and said second retaining piece respectively form gaps with an upper and a lower inner sidewalls of said casing;
• and
• a conductive terminal with one end disposed in said casing;
• at least a protruding pillar vertically arranged on one sidewall of said casing;
• and
• at least a guide slot vertically arranged on the opposite sidewall of said casing and corresponding to said protruding pillar;
• thereby said plurality of connectors are assembled into a connector assembly by up and down engagement via said protruding pillar on one connector and said guide slot on another connector.