95results about How to "Guaranteed contact pressure" patented technology

The invention relates to a moving contact unit and a three-position switch with the moving contact unit. The moving contact unit comprises contact fingers arranged pairwise, the two revolution radial ends of the two contact fingers in one pair are provided with an isolated grounding clamp port and a static contact clamp port respectively, the isolated grounding clamp port is electrically connected with a corresponding functional contact, the static contact clamp port is electrically connected with a static contact, a suspended support piece is arranged between the isolated grounding clamp port and the static contact clamp port, the two contact fingers in the same pair swing along the width direction of the isolated grounding clamp port and the static contact clamp port relative to the suspended support piece by taking the suspended support piece as the fulcrum, the two revolution radial ends of the two contact fingers in the same pair are also provided with elastic contraction device for contracting the isolated grounding clamp port and the static contact clamp port, the moving contact unit further comprises a contact finger support through which the suspended support piece is fixedly mounted, and the contact fingers are erected on the contact finger support via the suspended support piece. The contact fingers in the contact unit can swing for a certain degree according to the centering requirement, convenience is provided for assembling and debugging, and use is convenient.

A motor drivable with improved energy efficiency and generally reduced in size. The motor (1) with a transmission function in which the rotational speed of a rotor (5) is differentiated from the rotational speed of an output shaft (13) for outputting a torque transmitted from the rotor (5) thereto comprises a stator coil (4) attached to the inner peripheral surface of a cylindrical outer case (6), the cylindrical rotor (5) which is disposed on the inner peripheral side of the stator coil (4) and which generates a torque by receiving the magnetism generated by the stator coil (4), and a continuously variable transmission mechanism (3) which is disposed on the inner peripheral side of the rotor (5)and which steplessly varies the ratio of the rotational speed of an input member (32) connected to the rotor (5) to the rotational speed of an output member (33); rotated by receiving a torque from the input member (32) and connected to the output shaft (13).

Disclosed is a movable contactor assembly of a circuit breaker capable of enhancing a current limiting function by maintaining a contact state between a movable contactor and fixed contactors in a closed circuit state, by preventing the separated movable contactor from returning towards the fixed contactors at the time of a current limiting operation, by accelerating a separation operation of the movable contactor from the fixed contactors at the time of a current limiting operation, and by continuously maintaining a separated state of the movable contactor from the fixed contactors until a trip operation is performed by a trip mechanism.

Provided is an electric vehicle allowing a power receiving portion and an aerial wire to make a stable contact with each other even when the angle formed by a charging head and the aerial wire varies due to the variation of the distance between the electric vehicle and the aerial wire. The electric vehicle (10) charges an electricity storage device (16) by allowing the power receiving portions (40p, 40n) of a charging arm (22) to make contact with an aerial wire (20). In the electric vehicle (10), the charging arm (22) is equipped with an arm portion (86) that is expanded from a side portion (10s) of the electric vehicle (10) toward the outside of the vehicle width by rotationally moving about a rotationally moving shaft (84). The power receiving portions (40p, 40n) are provided on a charging head (26) positioned at the top of the arm portion (86). The charging head (26) is set so as to face the aerial wire (20) in such a direction that the longitudinal direction of the charging head (26) becomes orthogonal to the aerial wire (20) when the arm portion (86) is expanded to a predetermined rotational movement angle (theta3). The arm portion (86) is expanded up to a first rotational movement angle (theta1) larger than the predetermined rotational movement angle (theta3).