Magnet retention system in planar loudspeakers
AssigneeHarman International Industries, Incorporated
InventorsDavid B Garner, Richard J Herold
Life of this patent
Estimating the term…
Abstract
An electro-dynamic loudspeaker includes a frame, a magnet and a diaphragm. The frame includes a body portion defining a magnet mounting surface as well as a plurality of protrusions extending from the magnet mounting surface. The magnet is magnetically attracted to the body portion of the frame. The magnet is restricted from movement along the magnet mounting surface by at least one protrusion. The diaphragm is spaced apart from the magnet and coupled to the frame.
Claims19
An electro-dynamic loudspeaker comprising:
- a frame having a body portion defining a magnet mounting surface, the frame including a plurality of protrusions extending from the magnet mounting surface;
- a plurality of magnets magnetically attracted to the body portion of the frame, where each of the magnets engages the magnet mounting surface and is restricted from movement along the magnet mounting surface by at least two of the protrusions, where at least one of the protrusions is cylindrically shaped and includes an outer surface positioned adjacent to an edge of one of the magnets;
- and
- a diaphragm spaced apart from the plurality of magnets and coupled to the frame.
An electro-dynamic loudspeaker comprising:
- a frame having a body portion defining a magnet mounting surface, the frame including a plurality of protrusions extending from the magnet mounting surface;
- a plurality of magnets magnetically attracted to the body portion of the frame, where each of the magnets engages the magnet mounting surface and is restricted from movement along the magnet mounting surface by at least two of the protrusions, where at least one of the protrusions is an upturned lip positioned at the edge of an aperture extending through the body portion of the frame;
- and
- a diaphragm spaced apart from the plurality of magnets and coupled to the frame.
An electro-dynamic loudspeaker comprising:
- a frame having a body portion defining a magnet mounting surface, the frame including a plurality of protrusions extending from the magnet mounting surface, where the body portion includes a recess axially aligned with at least one of the protrusions;
- a plurality of magnets magnetically attracted to the body portion of the frame, where each of the magnets engages the magnet mounting surface and is restricted from movement along the magnet mounting surface by at least two of the protrusions;
- and
- a diaphragm spaced apart from the plurality of magnets and coupled to the frame.
An electro-dynamic loudspeaker comprising:
- a frame having a body portion defining a magnet mounting surface, the frame including a plurality of protrusions extending from the magnet mounting surface and a recess formed on an opposite surface of the body portion as the magnet mounting surface, where the protrusions are formed from material previously positioned below the magnet mounting surface;
- a plurality of magnets magnetically attracted to the body portion of the frame, where each of the magnets engages the magnet mounting surface and is restricted from movement along the magnet mounting surface by at least two of the protrusions;
- and
- a diaphragm spaced apart from the plurality of magnets and coupled to the frame.
Dependencies are inferred from the claim text.