Water-proof junction box and water-proof connector assembly

A water-proof junction box (9), including a junction box body (91), a junction box cover (92) and at least one water-proof connector assembly (1) deposited at one lateral of the junction box body (91), wherein the water-proof connector assembly (1) comprises a tube (2), a water-blocking sleeve (3), a pressing element (4) and a fastening element (5), each of which is of a cannular shape, and the water-proof connector assembly is characterized in:

• the tube (2) having a first cannular section (21), a second cannular section (22), a third cannular section (23) and a terminal (26), the first cannular section (21) and the second cannular section (22) defining a first abutting portion (24) therebetween, and the tube (2) having an outer wall formed with an externally threaded portion (25);
• the water-blocking sleeve (3) being inserted into the tube (2) and having a flange (31) and a sleeve portion (32), the flange (31) abutting against the first abutting portion (24) and the second cannular section (22) of the tube (2), and the flange (31) having an outer diameter greater than an outer diameter of the sleeve portion (32);
• the pressing element (4) being mounted around the sleeve portion (32) of the water-blocking sleeve (3), and having successively a first segment (41), a second segment (42) and a third segment (43), the first segment (41) abutting against the flange (31) of the water-blocking sleeve (3) and the third cannular section (23) of the tube (2), the second segment (42) abutting against the terminal (26) of the tube (2), the second segment (42) has an outer diameter greater than an outer diameter of the first segment (41) and an outer diameter of the third segment (43), the third segment (43) having a plurality of axial slits (431) and a plurality of elastic wings (432), each said elastic wine (432) having a first raised portion (45) and a second raised portion (46), and an outer diameter defined by the first raised portions (45) is greater than an outer diameter defined by the second raised portions (46);
• the fastening element (5) has an inner wall formed successively with an internally threaded portion (51), a third raised portion (52) and a fourth raised portion (53), the internally threaded portion (51) screwingly coupling the externally threaded portion (25) of the tube (2), the third raised portion (52) abutting against the first raised portions (45) of the pressing element (4), the fourth raised portion (53) abutting against the second raised portions (46) of the pressing element (4), an inner diameter of the third raised portion (52) being smaller than the outer diameter defined by the first raised portions (45), and an inner diameter of the fourth raised portion (53) being smaller than the outer diameter defined by the second raised portions (46);
• and
• a first cannular section (21) of the tube (2) is intercommunicated with an interior of the junction box body (91).