Abstract: A battery charger includes a bottom case comprising a bottom surface. A cover is attached on the case defining a curved groove and two openings. A seat is fixed on the bottom surface and comprises a first inclined surface inclined relative to the bottom surface. A slider is slidably arranged in the case and comprises two spring contacts aligned with the two openings, respectively. The slider is slidable to a position where the spring contacts protrude out of the two openings. The driving member is arranged in the bottom case and includes a post protruding out of the curved groove. A mating member comprises a second inclined surface inclined relative to the bottom surface engaging the first inclined surface. A first means is for allowing the mating member to slidably connect the mating member to the driving member and allowing the mating member to rotate together with the driving member.

Abstract: An electrical connector includes a base and a fixing assembly. The assembly includes a shaft, at least one positioning post, and at least one connecting bar. The shaft is slidably connected to the base and able to slide toward a first direction. The at least one positioning post is slidably connected to the base and able to slide toward a second direction. A threaded pole protrudes from each of the at least one positioning post. Ends of each of the at least one connecting bar is rotatably connected to the shaft and one of the at least one positioning post, respectively. The sliding of the shaft toward the first direction causes the at least one positioning post to slide toward the second direction, and when the shaft is caused to slide from a first position to a second position, the at least one threaded pole engages another electrical connector.

Abstract: An electrical plug is provided. The plug includes a base, a cover, a live prong, a neutral prong, and a ground prong. The cover defines a first hole, a second hole, and a third hole through which the ground prong, the live prong, and the neutral prong, respectively extend. The ground prong includes a middle contact, a first contact including a first pin rotatably connected to the middle contact and a first blade fixed to the first pin, and a second contact including a second pin rotatably connected to the middle contact and a second blade fixed to the second pin. The first pin and the second pin are rotatably at opposite sides of the middle contact. The first blade and the second blade are on front and rear of the middle contact.

Abstract: An electrical plug is provided. The plug includes a base, a cover, a live prong, a neutral prong, and a ground prong. The cover defines a first hole, a second hole, and a third hole through which the ground prong, the live prong, and the neutral prong, respectively extend. The ground prong includes a middle contact, a first contact including a first pin rotatably connected to the middle contact and a first blade fixed to the first pin, and a second contact including a second pin rotatably connected to the middle contact and a second blade fixed to the second pin. The first pin and the second pin are rotatably at opposite sides of the middle contact. The first blade and the second blade are on front and rear of the middle contact.

Abstract: An electrical connector includes a base and a fixing assembly. The assembly includes a shaft, at least one positioning post, and at least one connecting bar. The shaft is slidably connected to the base and able to slide toward a first direction. The at least one positioning post is slidably connected to the base and able to slide toward a second direction. A threaded pole protrudes from each of the at least one positioning post. Ends of each of the at least one connecting bar is rotatably connected to the shaft and one of the at least one positioning post, respectively. The sliding of the shaft toward the first direction causes the at least one positioning post to slide toward the second direction, and when the shaft is caused to slide from a first position to a second position, the at least one threaded pole engages another electrical connector.

Abstract: A battery charger includes a bottom case comprising a bottom surface. A cover is attached on the case defining a curved groove and two openings. A seat is fixed on the bottom surface and comprises a first inclined surface inclined relative to the bottom surface. A slider is slidably arranged in the case and comprises two spring contacts aligned with the two openings, respectively. The slider is slidable to a position where the spring contacts protrude out of the two openings. The driving member is arranged in the bottom case and includes a post protruding out of the curved groove. A mating member comprises a second inclined surface inclined relative to the bottom surface engaging the first inclined surface. A first means is for allowing the mating member to slidably connect the mating member to the driving member and allowing the mating member to rotate together with the driving member.