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A board-to-board connector assembly includes a receptacle connector having a plurality of first terminals, and a plug connector having a plurality of second terminals. Each of the first terminals has a first contact portion and a second contact portion and each of the second terminals has a first co

A board-to-board connector assembly includes a receptacle connector having a plurality of first terminals, and a plug connector having a plurality of second terminals. Each of the first terminals has a first contact portion and a second contact portion and each of the second terminals has a first contact arm and a second contact arm. When the plug connector is mated with the receptacle connector, the first contact portion and the second contact portion of the first terminal electrically contact the first contact arm and the second contact arm of the corresponding second terminal respectively to make the first terminal and the corresponding second terminal electrically interconnected steadily.

대표청구항 ▼

What is claimed is: 1. A board-to-board connector assembly, comprising: a receptacle connector having: a receptacle housing having a flat first base board, two first sidewalls protruded upward from two opposite sides of the first base board and an inserting wall protruded upward from the first base

What is claimed is: 1. A board-to-board connector assembly, comprising: a receptacle connector having: a receptacle housing having a flat first base board, two first sidewalls protruded upward from two opposite sides of the first base board and an inserting wall protruded upward from the first base board between the first sidewalls, a pair of first receiving recesses being formed between the inserting wall and the corresponding first sidewalls, the receptacle housing defining a plurality of terminal passageways extended longitudinally and communicating with the corresponding first receiving recesses; and a plurality of first terminals disposed in the corresponding terminal passageways and each having a base arm extending longitudinally, two opposite ends of the base arm extending upward to form a first elastic arm and a fixing arm respectively, a portion of the base arm further extending upward to form a second elastic arm located between the first elastic arm and the fixing arm, a free end of the first elastic arm protruding towards the second elastic arm to form a first contact portion, a free end of the second elastic arm protruding substantially towards the first contact portion to form a second contact portion, the first and the second contact portions stretching into the corresponding first receiving recess; and a plug connector mated with the receptacle connector and having: a plug housing having a flat second base board and two second sidewalls protruded downward from two opposite sides of the second base board to be inserted in the corresponding first receiving recesses of the receptacle housing, a receiving chamber being formed between the second sidewalls for receiving the inserting wall therein; and a plurality of second terminals mounted to the second sidewalls and each having a U-shaped continuity body riding on the corresponding second sidewall, the continuity body including a first contact arm located in the receiving chamber against an inside of the corresponding second sidewall and a second contact arm against an outside of the corresponding second sidewall; wherein the continuity body of the second terminal is clipped between the first and the second elastic arms of the corresponding first terminal, and the first and the second contact portions elastically contact the first and the second contact arms respectively. 2. The board-to-board connector assembly as claimed in claim 1, wherein the second elastic arm is bent towards the first elastic arm to show a lying-V shape in substance. 3. The board-to-board connector assembly as claimed in claim 1, wherein the second elastic arm has a higher top than the first elastic arm to make the second contact portion higher than the first contact portion. 4. The board-to-board connector assembly as claimed in claim 1, wherein the end of the base arm adjacent to the fixing arm further longitudinally extends to form a soldering portion located under the corresponding first sidewall. 5. The board-to-board connector assembly as claimed in claim 1, wherein each of the terminal passageways includes a second receiving cavity vertically defined at an inside of the first sidewall, a first receiving cavity vertically defined at one side of the inserting wall to face the second receiving cavity, a fixing perforation penetrating vertically through the corresponding first sidewall, and a connecting cavity longitudinally formed in the first base board to connect the first receiving cavity, the second receiving cavity and the fixing perforation, the base arm of the first terminal is received in the connecting cavity, the fixing arm is inserted in the fixing perforation, the first elastic arm is received in the first receiving cavity, the second elastic arm is received in the second receiving cavity, and the first and the second contact portions stretch into the corresponding first receiving recess. 6. The board-to-board connector assembly as claimed in claim 5, wherein an edge of the fixing arm protrudes outward to form a fixing projection abutting against an inside of the corresponding fixing perforation. 7. The board-to-board connector assembly as claimed in claim 1, wherein the second terminals are integrated to the second sidewalls of the plug housing, and free ends of the continuity body are embedded in the second base board. 8. The board-to-board connector assembly as claimed in claim 1, wherein the second terminal further has a soldering arm extended towards an opposite direction to the first contact arm from a free end of the second contact arm and projected out of a corresponding side edge of the second base board. 9. The board-to-board connector assembly as claimed in claim 1, wherein the first contact arm defines a first contact surface opposite to the second contact arm and the second contact arm defines a second contact surface opposite to the first contact arm and sunk inward, the first and the second contact portions electrically contact the first and the second contact surfaces respectively. 10. The board-to-board connector assembly as claimed in claim 1, wherein two opposite ends of the first base board protrude upward to form a pair of first end-walls each connecting two corresponding ends of the first sidewalls, two opposite ends of the inserting wall are spaced from the corresponding first end-walls to define a pair of second receiving recesses therebetween communicating with the first receiving recesses, two opposite ends of the second base board protrude downward to form a pair of second end-walls each connecting two corresponding ends of the second sidewalls and inserted in the corresponding second receiving recess. 11. The board-to-board connector assembly as claimed in claim 10, wherein each of the second end-walls has a lower bottom than the second sidewalls. 12. The board-to-board connector assembly as claimed in claim 10, wherein the receptacle connector further includes a pair of first fixing members mounted in one end of the first sidewalls respectively, each of the first fixing members has a base plate vertically disposed in the first sidewall and provided with an interference portion thereon, the interference portion faces the corresponding second receiving recess, the plug connector further includes a second fixing member mounted in the corresponding second end-wall, the second fixing member has a base bar provided with a pair of locking portions at two opposite ends thereof, the locking portions of the second fixing member pass across the corresponding interference portions of the two corresponding first fixing members to be locked under the corresponding interference portions. 13. The board-to-board connector assembly as claimed in claim 12, wherein the first fixing member further has a soldering tail extended towards an opposite direction to the interference portion from a bottom edge of the base plate and located under the corresponding first sidewall. 14. The board-to-board connector assembly as claimed in claim 12, wherein the one end of each first sidewall defines a fixing slot vertically penetrating therethrough and a connecting passage connecting a middle of the fixing slot and the corresponding second receiving recess, the base plate is fastened in the fixing slot and the interference portion projects into the connecting passage, the locking portions of the second fixing member oppositely project out of the corresponding second end-wall to be received in the corresponding connecting passages. 15. The board-to-board connector assembly as claimed in claim 12, wherein a substantial middle of the base bar extends upward to form an inserting portion, a bottom of each of the second end-walls defines a receiving channel extending longitudinally to penetrate therethrough for receiving the base bar therein, a substantial middle of the receiving channel extends upward to form an inserting aperture, the inserting portion is inserted in the inserting aperture. 16. The board-to-board connector assembly as claimed in claim 15, wherein a free end of the inserting portion oppositely protrudes to form a pair of fixing protrusions abutting against two facing insides of the corresponding inserting aperture. 17. The board-to-board connector assembly as claimed in claim 15, wherein two ends of the base bar further extend upward to form two fastening portions adjacent to the locking portions respectively, two ends of the receiving channel further extend upward to form a pair of receiving fillisters, the fastening portions are fastened in the corresponding receiving fillisters.