| 摘要 |
A mechanically commutated electric motor (5) is at least partially arranged in a closure apparatus (7) for a housing (3). The closure apparatus (7) comprises at least a first rod-like throttle coil (19a) and a second rod-like throttle coil (19b) which are wound in opposite directions with coil wire and which are arranged parallel to one another. The first throttle coil (19a) is electrically directly coupled to a first coupling element (20a) which is provided for electrical coupling to the mechanically commutated electric motor (5), and the second throttle coil (19b) is electrically directly coupled to a second coupling element (20b) which is provided for electrical coupling to the mechanically commutated electric motor (5), with the result that, when the mechanically commutated electric motor (5) is connected to the coupling elements (20a, 20b) and the mechanically commutated electric motor (5) is operated, the magnetic fluxes (Phi1, Phi2) in the first throttle coil (19a) and second throttle coil (19b) at least partially compensate one another. |
