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US 12,003,935 B2Granted
Loudspeaker with a non-uniform suspension and an enforcement element
AssigneePurifi Aps
InventorsBruno Putzeys, Lars Risbo, Carsten Tinggaard
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Abstract
A loudspeaker with a non-uniform surround, a membrane and a stiffening element preventing the surround from flexing the membrane during operation. A non-uniform surround does not have the same cross section, along the radius of the speaker if circular, all around the perimeter of the membrane as some portions will be upwardly directed and other portions downwardly directed.
Claims16
A loudspeaker comprising a motor, a membrane, a surround and a frame, where:
- the motor is configured to move the membrane upwardly and downwardly along an axis,
- the membrane has an outer edge,
- the surround is connected to the frame and at least substantially all of the outer edge of the membrane,
- the surround has a first portion and a second portion, where:
- the first portion has a first radial cross section extending from a third portion of an outer edge of the membrane to a point of the frame being the closest to the third portion, which first portion is directed upwardly, and
- the second portion has a second radial cross section extending from a fourth portion of an outer edge of the membrane to a point of the frame being the closest to the fourth portion, which second portion is directed downwardly,
- the loudspeaker further comprising a stiffening element provided at the outer edge of the membrane,
- wherein a portion of the surround, between the first and second portions, has a cross section with an M or W shape.
5 more elements
A method of assembling a loudspeaker, the method comprising:
- providing a membrane having an outer edge,
- providing a frame,
- providing a surround having a first portion and a second portion, where:
- the first portion has a first radial cross section extending from a third portion of an outer edge of the membrane to a point of the frame being closest to the third portion, which first portion is directed upwardly, and
- the second portion has a second radial cross section extending from a fourth portion of an outer edge of the membrane to a point of the frame being the closest to the fourth portion, which second portion is directed downwardly, wherein a portion of the surround, between the first and second portions, has a cross section with an M or W shape,
- providing a stiffening element and
- fixing the outer edge of the membrane to the surround and the stiffening element.
4 more elements
Dependencies are inferred from the claim text.