Spring connector and connecting device

A connecting device adapted as a plug connecting device or a socket connecting device, comprising:

• a housing;
• a plurality of spring connectors disposed in the housing and stacked together, wherein each of the spring connectors includes an insulating case and a plurality of spring terminals;
• in each of the spring connectors, the insulating case includes a plurality of cable slots spaced apart from each other, and the spring terminals are disposed on the insulating case;
• each of the spring terminals has a contacting portion and at least one tail portion, the contacting portion is formed in a spiral shape so as to have a gap, and the at least one tail portion is connected to the contacting portion;
• and the contacting portions of the spring terminals are respectively disposed in the cable slots of the insulating case;
• an electrical connector disposed in the housing;
• a plurality of cable assemblies respectively assembled with the spring connectors and each including a plurality of cables, wherein each of the cables has a connecting end portion;
• in each of the cable assemblies and the corresponding spring connector, the connecting end portions of the cables are respectively disposed in the cable slots of the insulating case, the connecting end portions of the cables are respectively arranged in the gaps of the contacting portions of the spring terminals, and each of the connecting end portions is sandwiched by the corresponding contacting portion in a four-point connection, so that the spring terminals are electrically connected to the cables, respectively;
• and
• a plurality of circuit boards disposed in the housing, wherein the tail portions of the spring connectors are respectively and electrically connected to the circuit boards, and the circuit boards are electrically connected to the electrical connector, so that the cables of the cable assemblies are electrically connected to the electrical connector through the spring terminals of the spring connectors and the circuit boards.