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    • 27. 发明专利
    • Vacuum switch
    • DE3718531A1
    • 1988-08-11
    • DE3718531
    • 1987-05-29
    • SLAMECKA ERNST
    • SLAMECKA ERNST PROF DR TECHN
    • H01H33/66H01H33/662
    • Switch housings of the metal-chamber single-bushing type are provided with an advantageous construction as a result of the following measures: a) the switching chamber is formed by a cup 1 surrounding the contact bodies 6, 13. The wall 3 of said cup 1 has a longitudinal fold formation, in order to vary the length during the switching stroke, by inverting the cup wall; b) the first region 11 of the bushing insulator 5 presses around the stationary current conductor bolt 12 along a part of its length; adjacent to this, it expands to the region 9 of larger diameter; c) in a development, the bushing insulator according to b) surrounds the switching chamber 1 by means of its region 16; d) in the case of a three-pole design, these housings are insulated from one another; intermediate insulating walls can be obviated. There are now only two connections on the switch housing to be soldered in a vacuum-tight manner.
    • 29. 发明专利
    • Electrical vacuum switch
    • DE3619315A1
    • 1987-05-07
    • DE3619315
    • 1986-06-09
    • SLAMECKA ERNST
    • SLAMECKA ERNST PROF DR TECHN
    • H01H33/18H01H33/664H01H33/66
    • An axial magnetic field, which runs parallel to the switching arc, is intended to be excited without the considerable cost which is required for this purpose for an additional excitation winding arrangement. To this end, a portion of the magnetic field which is excited by the current i in the current conductor bolts 2, 12 is initially concentrated in bodies composed of a material having high magnetic permeability and is then diverted, as a result of special shaping of these bodies, into an axial path through the switching path s. In the present variant of the solution relating to the first solution which has already been quoted in the main patent, the magnetic field diversion (and especially making the circular field course uniform) can be achieved using a plurality of magnetic field diversion bodies which are in the form of ring sectors. These bodies are arranged in the annular space between the current conductor bolts 2, 12 and the outer wall of the contact bodies 3, 13, to be precise such that further diversion bodies 7, 9; 17, 19 having a reducing circular extent follow those diversion bodies 5; 15 which have the largest circular extent. Gaps 6, 8, 10; 16, 18, 20 are left free between the diversion bodies. In this case, the largest gaps 10; 20 are located between the smallest and the largest diversion bodies. The two largest diversion bodies 5; 15 are dimensioned and arranged such that their end regions overlap. The shaping of the diversion bodies results in the circular distribution of the axial magnetic field being optimised in a simple manner.