Acoustic device suspension

Patent metadata

Field	Value
Publication number	US-9466280-B2
Application number	US-201414522770-A
Country	US
Kind code	B2
Filing date	Oct 24, 2014
Priority date	Oct 24, 2014
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

An acoustic device includes a diaphragm, a frame, and a suspension element that couples the diaphragm to the frame such that the diaphragm is movable in a reciprocating manner relative to the frame. The suspension element includes a first surround element and a second surround element that are separated at respective outer edges by a first distance and separated at respective inner edges by a second distance. The first distance and the second distance are different.

First claim

What is claimed is:

1. An acoustic device comprising:
a diaphragm
a frame;
a suspension element that couples the diaphragm to the frame such that the diaphragm is movable in a reciprocating manner relative to the frame, the suspension element comprising a first surround element and a second surround element that are separated at respective outer edges by a first distance and separated at respective inner edges by a second distance, wherein the first distance and the second distance are different; and
a spacer element that is disposed between the first surround element and the second surround element, and wherein the first distance comprises a thickness of the spacer element.

2. The acoustic device of claim 1 , wherein the first distance is greater than the second distance.

3. The acoustic device of claim 1 , wherein the second distance comprises a thickness of the diaphragm.

4. The acoustic device of claim 1 , wherein the spacer element is formed of a non-porous material.

5. The acoustic device of claim 1 , wherein the spacer element includes one or a plurality of vents.

6. The acoustic device of claim 1 , wherein the spacer element is formed of a porous material.

7. The acoustic device of claim 1 , wherein:
each of the first surround element and the second surround element includes a respective outer landing that is defined in part by a respective outer edge, and wherein the spacer element is disposed between the outer landings of the first surround element and the second surround element;
each of the first surround element and the second surround element includes a respective inner landing that is defined in part by a respective inner edge, and wherein the diaphragm is disposed between the inner landings of the first surround element and the second surround element; and
the first surround element and the second surround element are arranged such that a midline of the inner landings of the surround elements is aligned with the midline of the outer landings of the surround elements.

8. The acoustic device of claim 1 , wherein the frame includes:
a first frame element that is coupled to an outer landing of the first surround element; and
a second frame element that is coupled to an outer landing of the second surround element.

9. The acoustic device of claim 8 , wherein the frame further includes:
a third frame element that couples the first frame element to the second frame element, wherein the first distance is defined at least in part by a dimension of the third frame element, and wherein the first frame element, the second frame element and the third frame element form an integral unit.

10. The acoustic device of claim 8 , wherein:
the diaphragm is disposed between respective inner landings of the first surround element and the second surround element; and
the first surround element and the second surround element are arranged such that a midline of the inner landings of the surround elements is aligned with the midline of the outer landings of the surround elements.

11. An acoustic device:
a diaphragm
a frame;
a suspension element that couples the diaphragm to the frame such that the diaphragm is movable in a reciprocating manner relative to the frame, the suspension element comprising a first surround element and a second surround element that are separated at respective outer edges by a first distance and separated at respective inner edges by a second distance, wherein the first distance and the second distance are different, and wherein a midline between the inner edges is aligned with a midline between the outer edges; and
a spacer element that is disposed between the first surround element and the second surround element, and wherein the first distance comprises a thickness of the spacer element.

12. The acoustic device of claim 11 , wherein the first distance is greater than the second distance.

13. The acoustic device of claim 11 , wherein the second distance comprises a thickness of the diaphragm.

14. The acoustic device of claim 11 , wherein the frame includes:
a first frame element that is coupled to an outer landing of the first surround element; and
a second frame element that is coupled to an outer landing of the second surround element.

15. The acoustic device of claim 14 , wherein the frame further includes:
a third frame element that couples the first frame element to the second frame element, wherein the first distance is defined at least in part by a dimension of the third frame element, and wherein the first frame element, the second frame element and the third frame element form an integral unit.

Assignees

• Bose Corp

Inventors

• Kawka Marek
• Liu Yang
• Pare Christopher A

Classifications

• H04R2307/207

  Shape aspects of the outer suspension of loudspeaker diaphragms · CPC title

• H04R7/20 Primary

  Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands · CPC title

• G10K11/002 Primary

  Devices for damping, suppressing, obstructing or conducting sound in acoustic devices (G10K1/06 - G10K1/10 take precedence; for electro-mechanical transducers for communication H04R3/002) · CPC title

• H04R2231/003

  Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms · CPC title

• H04R9/043

  Inner suspension or damper, e.g. spider (outer suspension or surround H04R7/16) · CPC title