Patent DE-102010014428-A1 (DE)
Title: Multipole electrical switching device comprises two switching poles, a drive mechanism and a switching shaft, which is capable of rotating under the effect of the drive mechanism about an axis of rotation formed by pivot bearings
Inventor: HIERL ANDREAS
IPC: H01H31/04
Filed: 2010-04-01
Abstract: The multipole electrical switching device (1) comprises two switching poles (7), a drive mechanism (12) and with a switching shaft, which is capable of rotating under the effect of the drive mechanism about an axis of rotation formed by pivot bearings in which each of the switching poles has in each case a current path (6) and a switching contact system for opening and closing the current path, where a movable contact arrangement of the switching contact system of each switching poles has in each case an integral switching shaft segment, which is formed from insulating material. The multipole electrical switching device (1) comprises two switching poles (7), a drive mechanism (12) and with a switching shaft, which is capable of rotating under the effect of the drive mechanism about an axis of rotation formed by pivot bearings in which each of the switching poles has in each case a current path (6) and a switching contact system for opening and closing the current path, where a movable contact arrangement of the switching contact system of each switching poles has in each case an integral switching shaft segment, which is formed from insulating material, which bears a contact lever arrangement and in which the switching shaft segments of adjacent switching poles are connected in each case by two connecting branches so as to form the switching shaft. The connecting branches extending in each case at a distance parallel to the axis of rotation and is formed from corresponding connecting elements. The modularity of the individual switching poles are retained and complicated assembly operations are avoided in order to ensure connection of the switching shaft segments with a fit, where provision is made for all of the connection elements of the two connecting branches to be formed by first sections of the integral switching shaft segments, which bear the contact lever arrangements. The corresponding connecting elements form pair of male-female type. Support bearings are formed for the drive mechanism of the coupling elements coupling on the switching shaft from second sections of the single piece switching shaft segment. The support bearings are formed as plates, which extend itself diagonally to the axis of rotation of the switching shaft. The separate switch pole housing that is composed of two half-shells forms an insulating envelope of a switch room for the reception of the single switching pole and swivel and forms pair of corresponding bearing means, where the first bearing means is formed from third sections of the single piece switching shaft segments and the second bearing means is formed form the sections of the half-shells. The half-shell comprises breakthrough forming a bent longitudinal hole extending itself along the movement path of the connection element. The separate switch-pole housing is received in a protective housing.