An electrical connector includes a metal shell and a cover. The metal shell includes first, second, third, and fourth side walls sequentially connected and defining an accommodating space, a first opening, and a second opening that are sequentially connected. The first side wall is provided with two buckle grooves. The cover includes a flat plate portion covering the first opening and two fixing portions disposed in the accommodating space. Each fixing portion includes a first plate, a curved portion, and a second plate that extend from the flat plate portion and are sequentially connected. Outer surfaces of the curved portions respectively contact the second and fourth side walls. The two first plates are parallel to and in contact with the first side wall. Each first plate is provided with a buckle member buckled in one corresponding buckle groove. A free end of each second plate contacts the third side wall.

Provided is a plug-and-socket assembly including a plug configured to be electrically and mechanically coupled with a socket, and a cover configured to be mounted over a portion of the plug and a portion of the socket, the cover including a flange forming a first opening at a proximal end of the cover and configured to be coupled to the socket, a retaining portion forming a second opening at a distal end of the cover, and configured to secure a plug component between the flange and the retaining portion, and a cover body extending from the flange to the retaining portion and forming a longitudinal opening extending from the first opening to the second opening.

An outlet enclosure for enclosing an electrical outlet to cover the electrical outlet and its electrical socket. The outlet enclosure includes a base plate and an outlet cover or holder which wraps partially around the electrical outlet to allow access to the electrical socket. The outlet cover or holder includes tracks extending in a vertical direction along its outer surface. An outer cylindrical cover wraps completely around the outlet cover or holder. The outer cylindrical cover slides vertically via the tracks over the outlet cover or holder from a lowered position fully enclosing the outlet cover or holder to a raised position exposing the electrical socket to allow access to the electrical outlet so that a plug can be inserted into the socket of the electrical outlet. When the outer cylindrical cover is lowered, it protects the electrical outlet from exposure to the elements.

An extendable electrical outlet enclosure with a tubular main body, a bezel, a cap, at least one extension tube, and a back plate. The tubular main body has a first end, a second end, and a wall extending between the first end and second end. The tubular main body also has an electrical device support that extends inward from the wall and defines a separation between an electrical plug section and a wiring section. The bezel surrounds an opening in the main body at the first end and allows the cap to removably mount to the electrical enclosure. The at least one extension tube attaches to the tubular main body at the second end and has a leading end, a trailing end, and an outer wall extending between the leading end and the trailing end. The back plate couples with the at least one extension tube at the trailing end.

A spring-loaded connector (2) includes a waterproof elastic member (50). The waterproof elastic member (50) includes cylindrical parts (51) corresponding to respective contact units (10). When the cylindrical part (51) is sandwiched between a first pin (11) and an intermediate member (13) of the corresponding contact unit (10), the waterproof elastic member (50) seals between the first pin (11) and the intermediate member (13) in a watertight manner while allowing the contact unit (10) to penetrate. The waterproof elastic member (50) includes, between the cylindrical parts (51) that are adjacent to each other, a water-shielding structure (52) for preventing the first pins (11) of the contact units (10) corresponding to the adjacent cylindrical parts from being electrically connected due to presence of water between the first pins (11).

An extension cord for polyphase voltage conversion includes a socket body, a conductive cable and a polyphase circuit disposed in the socket body. The socket body has a hollow housing, and a four-phase power connective head is disposed at an end of the housing in order to supply power to the extension cord. A breaker having safety switch function and at least two power sockets providing voltages with different phases are disposed in the housing. An end of the conductive cable is electrically connectable with a four-phase power source. The other end of the conductive cable has a four-phase power plug electrically connectable with the four-phase power connective head of the socket body. The polyphase circuit includes three phase conductors, a neutral conductor and a ground conductor. The conductors are used to electrically connect with the four-phase power connective head, the breaker and the respective at least two power sockets.

A protective assembly provided with a hollow first cap with a first cavity configured to house a first connector and a second cap. The second cap has a hollow portion delimiting a second cavity configured to house a second connector to be connected to the first connector. The first cavity is shaped to match an outer casing of the hollow portion. The second cap penetrates into the first cavity in a sealed manner, in a connected mode, isolating the first cavity and the second cavity from an external environment.

Apparatus for opposed terminals of an electrical device includes magnetic material carried by a cover formed of an electrically insulative material and concurrently covering the terminals, and a magnetic attraction between the magnetic material and the terminals magnetically coupling the cover to the terminals. In another embodiment, the apparatus includes covers formed of an electrically insulative material and connected by hinges to the electrical device for movement between open positions away from the terminals and closed positions covering the respective terminals.

A terminal module (10) is provided with a terminal fitting (12) to be connected to an end part of a cable (11), a rubber plug (13) to be held in close contact with the outer periphery of the cable (11), a housing (14) for supporting the terminal fitting (12), and a cover (15) to be mounted on the housing (14) to cover the terminal fitting (12). The rubber plug (13) is sandwiched and held between the housing (14) and the cover (15).

A dock for an electronic device includes a base configured to fit over at least a portion of a back surface of the electronic device; a tray extending from the base for receiving one side of the electronic device and extending over a portion of the front surface of the electronic device; a contact box attached to at least one of the base or the tray; contacts extending from the contact box through one or more openings in the tray; and at least one guide pin extending from the contact box through one or more openings in the tray, where each of the at least one guide pin is elastomeric.