Hybrid ring-radiator headphone driver

Patent metadata

Field	Value
Publication number	US-10455317-B2
Application number	US-201715627803-A
Country	US
Kind code	B2
Filing date	Jun 20, 2017
Priority date	May 27, 2014
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A system and method for a hybrid ring-radiator headphone driver, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims.

First claim

What is claimed is:

1. A hybrid headphone driver comprising:
a frame;
a center radiator comprising:
an inner magnet; and
an inner coil that moves in relation to the inner magnet;

a ring radiator comprising:
a ring-shaped outer magnet that encircles the inner magnet; and
an outer coil that moves in relation to the outer magnet;

at least a first diaphragm portion coupled to the inner coil; and
at least a second diaphragm portion coupled to the outer coil,
wherein the frame comprises a plurality of rings that separate the inner magnet from the outer magnet.

2. The hybrid headphone driver of claim 1 , wherein the frame comprises a vent hole in a back side of the frame, the vent hole allowing air flow between the back side of the frame and an inner volume of the frame between two of the plurality of rings.

3. The hybrid headphone driver of claim 2 , wherein the vent hole allows air flow for the center radiator.

4. The hybrid headphone driver of claim 1 , wherein a first ring of the plurality of rings has a first height from a back side of the frame, and a second ring of the plurality of rings has a second height from the back side of the frame, wherein the second height is greater than the first height.

5. The hybrid headphone driver of claim 4 , wherein the first ring of the plurality of rings defines a center space in which at least a portion of the inner magnet is positioned and in which at least a portion of the inner coil is positioned.

6. The hybrid headphone driver of claim 1 , wherein the frame comprises a planar back side, at least a portion of which is directly behind the center radiator.

7. The hybrid headphone driver of claim 1 , comprising a magnet cup in which the inner magnet is positioned, and wherein at least one of the plurality of rings defines a space into which the magnet cup is press fit.

8. The hybrid headphone driver of claim 1 , wherein the first diaphragm portion and the second diaphragm portion are different portions of a same diaphragm.

9. The hybrid headphone driver of claim 1 ,
wherein:
the inner magnet and the outer magnet are independent magnets; and
the inner magnet comprises a slot in which the inner coil moves.

10. The hybrid headphone driver of claim 9 , wherein the outer magnet comprises a slot in which the outer coil moves.

11. The hybrid headphone driver of claim 9 , wherein the ring-shaped outer magnet defines an central space bounded by an inner perimeter surface of the ring-shaped outer magnet, and the inner magnet extends entirely through the central space.

12. The hybrid headphone driver of claim 9 , wherein the inner magnet is thicker than the outer magnet.

13. The hybrid headphone driver of claim 9 , wherein the inner magnet comprises a permanent magnet, and the outer magnet comprises a permanent magnet.

14. The hybrid headphone driver of claim 9 , wherein each of the inner magnet and the outer magnet comprises a center hole.

15. A hybrid headphone driver comprising:
a frame;
a center radiator comprising:
an inner magnet; and
an inner coil that moves in relation to the inner magnet;

a ring radiator comprising:
a ring-shaped outer magnet that encircles the inner magnet; and
an outer coil that moves in relation to the outer magnet;

at least a first diaphragm portion coupled to the inner coil and coupled directly to the frame; and
at least a second diaphragm portion coupled to the outer coil and coupled directly to the frame, wherein the frame comprises a continuous ring of a same material, the at least a first diaphragm portion is coupled directly to the ring, and the at least a second diaphragm portion is coupled directly to the ring.

16. The hybrid headphone driver of claim 15 , wherein the second diaphragm portion comprises two lobes that encircle the first diaphragm portion, and an interface between the two lobes is positioned directly in front of the outer magnet.

17. The hybrid headphone driver of claim 15 , wherein each of the center radiator and the ring radiator comprises a same respective effective radiating area.

18. The hybrid headphone driver of claim 15 , wherein each of the center radiator and the ring radiator comprises a similar respective Theil/Small parameter.

19. A hybrid headphone driver comprising:
a frame;
a center radiator comprising:
an inner magnet; and
an inner coil that moves in relation to the inner magnet;

a ring radiator comprising:
a ring-shaped outer magnet that encircles the inner magnet; and
an outer coil that moves in relation to the outer magnet;

at least a first diaphragm portion coupled to the inner coil and coupled directly to the frame; and
at least a second diaphragm portion coupled to the outer coil and coupled directly to the frame,
wherein the first diaphragm portion and the second diaphragm portion are different portions of a same diaphragm.

Assignees

• Voyetra Turtle Beach Inc

Inventors

• Zepp David

Classifications

• H04R3/12

  for distributing signals to two or more loudspeakers {(specially adapted for hearing aids H04R25/407)} · CPC title

• H04R1/1075 Primary

  Mountings of transducers in earphones or headphones · CPC title

• H04R9/025

  Magnetic circuit · CPC title

• H04R1/24

  Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges · CPC title

• H04R9/04

  Construction, mounting, or centering of coil · CPC title