Abstract: A suction unit is described for a hand-held suction apparatus. The suction unit creates a suction air flow to suck up dirt particles. The suction unit has a housing with a rear wall and a hand grip arranged on the rear wall such that the hand grip and the rear wall border a cut-out for a user to arrange fingers of a hand when gripping the hand grip. The suction unit has an electrically operated display element on the rear wall of the housing facing the cut-out so as to output visual information. The display element has a first part-display which is arranged on a first side of the hand grip and a second part-display which is arranged on a second side of the hand grip lying opposite the first side. The display element is configured such that the first and second part-displays display the same visual information.

Abstract: A separating unit for a suction apparatus includes a collection container within a housing wall. A filter unit within the container retains dirt particles from suction air flowing on the filter surface. The container has an inlet opening at the wall closed by a flap having a total surface covering the opening and being fastened to the wall at a main edge. The flap has a main desired bending point on the main edge, enabling bending of the total surface about a main bending axis. The flap has a linear desired bending point enabling bending of a partial area of the total surface facing away from the main edge about an additional bending axis. The flap allows bending of the partial area away from the wall by force acting on the flap from outside, exposing a partial area of the opening corresponding to the partial area of the total surface.

Abstract: A separator unit includes a collecting container enclosed by a housing wall, extending along a longitudinal axis, and having an inlet opening disposed on the housing wall for a suction airflow. The separator unit is configured in such a manner that a suction airflow that is passing through the inlet opening into the collecting container has a flow direction running in the circumferential direction with regard to the longitudinal axis. The separator unit includes a diversion element which is positioned downstream along the flow direction and has a surface which acts on the suction airflow. The normal vector of an obliquely positioned section of the surface of the diversion element runs in an oblique manner with respect to the longitudinal axis. A suction apparatus having the separator unit is also provided.

Abstract: A separating unit for a suction apparatus includes a collecting container enclosed by a housing wall. The collecting container has an inlet opening for a suction air flow disposed on the housing wall, which is covered with a flexible flap. The flexible flap is fastened to the housing wall at a leading edge of the flap and has a first portion and a subsequent second portion along the leading edge. The flap is configured to be bent into the collecting container away from the housing wall by an external force acting on the flap and as a result exposes the inlet opening at least in part. The separating unit is configured such that the bending away of the first portion of the flap is more greatly restricted than the bending away of the second portion of the flap. A suction apparatus having the separating unit is also provided.

Abstract: A separating unit for a suction apparatus includes a collecting container surrounded by a housing wall extending along a longitudinal axis and having an inlet opening for a suction air flow. The separating unit causes the suction air flow entering through the inlet opening into the collecting container to have a flow direction in a circumferential direction relative to the longitudinal axis. An annular diversion element has a surface acting on the suction air flow entering into the collecting container. The surface of the diversion element, at least partially, runs helically along the inside of the housing wall around the longitudinal axis. The surface of the diversion element has a step with first and second edges mutually spaced apart along the longitudinal axis. The step of the surface runs at an angle relative to the longitudinal axis. A suction apparatus having the separating unit is also provided.

Abstract: A separating unit for a suction apparatus includes a collecting container for particles of dirt, which is surrounded by a housing wall. The collecting container extends along a longitudinal axis. The separating unit also includes an ejection and/or a compacting element which is configured to be moved inside the collecting container, starting from an initial position along the longitudinal axis to a compacting position in order to compact particles of dirt disposed in the collecting container and/or to eject them from the collecting container. The separating unit is configured in such a way that a radial force, with which the ejection and/or compacting element acts in the radial direction on the inside of the housing wall, is lower at the compacting position than at the initial position. A suction apparatus having the separating unit is also provided.

Abstract: A separator unit for a suction apparatus contains a collection container with a collection area for receiving particles of dirt from a suction airflow. The collection container runs along a longitudinal axis from a first end side, which during the operation of the suction apparatus faces the blower of the suction apparatus, up to a second end side on which the cover of the collection container is arranged. The separator unit contains a filter module arranged in the collection container and is configured to filter particles of dirt out of the suction airflow. The collection area is adjacent to the surface of the filter module and the filter module is configured so as on the first end side of the collection container to be removed from the collection container or to be inserted into the collection container.

Abstract: There is provided a dynamic sound transducer having a diaphragm system (10) which has at least a first and second metallized surface (11) which are separated from each other by an insulating surface (12). The dynamic sound transducer further has a moving coil (20) with a coil wire (25). An end of the coil wire is electrically conductingly connected to the first metallized surface (11) and the other end of the coil wire is electrically conductingly connected to the second metallized surface (11).

Abstract: There is provided a dynamic sound transducer having a diaphragm system (10) which has at least a first and second metallized surface (11) which are separated from each other by an insulating surface (12). The dynamic sound transducer further has a moving coil (20) with a coil wire (25). An end of the coil wire is electrically conductingly connected to the first metallized surface (11) and the other end of the coil wire is electrically conductingly connected to the second metallized surface (11).

Abstract: The invention relates to an arrangement for optically determining the distance of a reflecting surface that can be used, in particular, for determining slight variations in distance such as can frequently occur in vibrating systems. Such an arrangement can also be used as optical microphone or hydrophone. The arrangement according to the invention is designed in this case such that light from a light source is directed onto a reflecting surface via a first optical fiber, and light reflected therefrom is directed onto at least one statically arranged optical detector via the first optical fiber or at least one further optical fiber. An optical element collimating in the direction of the reflecting surface is arranged between the reflecting surface and the one or more optical fibers.

Abstract: There is provided a wireless headphone unit having at least one electroacoustic transducer and a transmitting/receiving unit for wirelessly receiving first signals which contain audio signals to be reproduced on the electroacoustic transducer and a network identification unit for storing the network identification of the wireless headphone unit, wherein the transmitting/receiving unit is adapted for wirelessly transmitting the network identification of the headphone unit.

Abstract: The invention relates to an arrangement for optically determining the distance of a reflecting surface that can be used, in particular, for determining slight variations in distance such as can frequently occur in vibrating systems. Such an arrangement can also be used as optical microphone or hydrophone. The arrangement according to the invention is designed in this case such that light from a light source is directed onto a reflecting surface via a first optical fiber, and light reflected therefrom is directed onto at least one statically arranged optical detector via the first optical fiber or at least one further optical fiber. An optical element collimating in the direction of the reflecting surface is arranged between the reflecting surface and the one or more optical fibers.

Abstract: The invention relates to a sensor or a microphone having such a sensor. The object of the present invention is to improve the degree of development of the sensor or an optical microphone as an air-borne sound sensor. A sensor consisting of a diaphragm, wherein at least on one side the diaphragm comprises a surface which reflects a light beam, wherein on this side a first optical waveguide is constructed as a transmitting waveguide, through which a light beam passes and strikes against the diaphragm, wherein a second optical waveguide constructed at a specific angular relationship to the first optical waveguide is provided, which has the function of a receiving waveguide and into which light reflected from the diaphragm enters, an optical element is constructed in the light path between the transmitting waveguide and the receiving waveguide, by which the light beam is bunched or focussed.

Abstract: Electrical contacting of very fine wires, including an electrical transducer and an electrical apparatus, as well as a process for producing the electrical contacting of very fine wires. It is the goal of the invention to simplify the electrical contacting of very fine wires to the contact sleeve and make it more secure, so that an automatic is possible and the production costs for the electrical contacting are reduced. According to the invention, for the accomplishing of the set task an electrical contacting of a very fine wire is proposed, in which contacting the contact sleeve shows two superimposed plates and provision is made for a clamp region of the plates, in which region the plate spacing is less than in the other plate regions. In the clamp region the wire is clamped in between the plates and connected to at least one of the plates in an electrically conducting manner. Advantageous further developments are described in the dependent claims.