Opposing loudspeaker arrangement

Patent metadata

Field	Value
Publication number	US-11218797-B2
Application number	US-202016830589-A
Country	US
Kind code	B2
Filing date	Mar 26, 2020
Priority date	Apr 15, 2019
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A loudspeaker arrangement having a first loudspeaker comprising a first sound radiating surface and a first loudspeaker basket, and a second loudspeaker comprising a second sound radiating surface and a second loudspeaker basket. The first loudspeaker and the second loudspeaker are arranged opposite each other in a first direction, a cavity is formed between a front side of the first loudspeaker and a front side of the second loudspeaker, and the first loudspeaker basket is directly coupled to the second loudspeaker basket.

First claim

What is claimed is:

1. A loudspeaker arrangement, comprising:
a first loudspeaker having a first sound radiating surface and a first loudspeaker basket;
a second loudspeaker having a second sound radiating surface and a second loudspeaker basket;
the first loudspeaker and the second loudspeaker are arranged opposite each other in a first direction;
a cavity formed between a front side of the first loudspeaker and a front side of the second loudspeaker;
the first loudspeaker basket is directly coupled to the second loudspeaker basket;
a third projection and a fourth projection formed by the first loudspeaker basket and the second loudspeaker basket, and arranged opposite each other in a second direction that is perpendicular to the first direction;
a loudspeaker enclosure comprising a first enclosure part arranged to enclose a rear side of the first loudspeaker, and a second enclosure part arranged to enclose a rear side of the second loudspeaker and to be connected to the first enclosure part and
when the first enclosure part and the second enclosure part are arranged to enclose the first and the second loudspeaker, the third projection and the fourth projection each are clamped between the first enclosure part and the second enclosure part.

2. The loudspeaker arrangement of claim 1 , wherein
the first loudspeaker basket has a first projection extending from the first loudspeaker basket in the first direction towards the second loudspeaker;
the second loudspeaker basket has a second projection extending from the second loudspeaker basket in the first direction towards the first loudspeaker; and
the first projection is directly coupled to the second projection, thereby defining the cavity between the front side of the first loudspeaker and the front side of the second loudspeaker.

3. The loudspeaker arrangement of claim 1 , further comprising:
a first elastic cord mounted on the third projection to circumferentially surround the third projection;
a second elastic cord mounted on the fourth projection to circumferentially surround the fourth projection; and
when the first enclosure part and the second enclosure part are arranged to enclose the first and the second loudspeakers, the first elastic cord is arranged between the third projection and the loudspeaker enclosure, and the second elastic cord is arranged between the fourth projection and the loudspeaker enclosure.

4. The loudspeaker arrangement of claim 3 , wherein, when the loudspeaker enclosure is arranged to enclose the first loudspeaker and the second loudspeaker, the first enclosure part and the second enclosure part exert pressure on the first elastic cord and the third projection, and the first enclosure part and the second enclosure part further exert pressure on the second elastic cord and the fourth projection, thereby fixating the first loudspeaker and the second loudspeaker within the enclosure.

5. The loudspeaker arrangement of claim 4 , wherein,
when pressure is exerted on the first elastic cord, the first elastic cord is compressed up to a maximum of 50%; and
when pressure is exerted on the second elastic cord, the second elastic cord is compressed up to a maximum of 50%.

6. The loudspeaker arrangement of claim 3 , further comprising a third elastic cord arranged between the first enclosure part and the second enclosure part.

7. The loudspeaker arrangement of claim 6 , wherein at least one of
the first elastic cord comprises an elastomer, sponge or foam rubber, or a foam material;
the second elastic cord comprises an elastomer, sponge or foam rubber, or a foam material; and
the third elastic cord comprises an elastomer, sponge or foam rubber, or a foam material.

8. The loudspeaker arrangement of claim 1 , wherein the cavity further comprises at least one opening in the second direction towards an environment outside of the cavity.

9. The loudspeaker arrangement of claim 1 , wherein the first loudspeaker and the second loudspeaker are arranged such that the first sound radiating surface and the second sound radiating surface are arranged substantially in parallel to each other.

10. The loudspeaker arrangement of claim 1 , further comprising a plurality of first connection elements and a plurality of second connection elements configured to connect the first loudspeaker basket to the second loudspeaker basket.

11. The loudspeaker arrangement of claim 1 , further comprising:
a plurality of first connection elements;
a plurality of second connection elements configured to connect the first loudspeaker basket to the second loudspeaker basket; and
a plurality of third connection elements that are configured to connect the first enclosure part to the second enclosure part.

12. The loudspeaker arrangement of claim 11 , wherein the plurality of third connection elements is evenly distributed around the loudspeaker enclosure and along a contact area between the first enclosure part and the second enclosure part to equally distribute a resulting holding force along a perimeter of the loudspeaker enclosure.

13. The loudspeaker arrangement of claim 11 , wherein each of the plurality of third connection elements comprises a first hook attached to the first enclosure part, a second hook attached to the second enclosure part and a fixing element.

14. The loudspeaker arrangement of claim 13 , wherein, when the first enclosure part is connected to the second enclosure part, for each of the plurality of third connection elements the respective first hook and second hook overlap in the first direction, and the fixing element is inserted between the first hook and the second hook.

Assignees

• Harman Becker Automotive Systems Gmbh

Inventors

• Prokisch Joerg
• Schuster Michael
• Pfeffer Andreas
• Aigner Manfred

Classifications

• H04R31/006

  Interconnection of transducer parts (of diaphragm and outer suspension by moulding H04R31/003) · CPC title

• H04R2499/13

  Acoustic transducers and sound field adaptation in vehicles · CPC title

• H04R1/2873 Primary

  for loudspeaker transducers · CPC title

• H04R1/2896

  for loudspeaker transducers · CPC title

• H04R1/288

  for loudspeaker transducers · CPC title