Enclosure expansion type virtual engine sound system and vehicle using the same

Patent metadata

Field	Value
Publication number	US-9731554-B2
Application number	US-201615227225-A
Country	US
Kind code	B2
Filing date	Aug 3, 2016
Priority date	Oct 19, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

An enclosure expansion type virtual engine sound system is provided. The system includes an enclosure case having a case enclosure accommodating a speaker to which a virtual engine sound is output and an enclosure back beam with an internal space divided into a speaker enclosure and a expanded enclosure as an extended space of the case enclosure for low band amplification of the engine sound and a space in which the engine sound is output in three directions. Accordingly, the enclosure back beam implements a low band amplification function in addition to a crash absorbing function. The engine sound is output in three directions through an internal space of the enclosure back beam, thereby solving a space restriction of a narrow engine room while satisfying regulations of the speaker.

First claim

What is claimed is:

1. An enclosure expansion type virtual engine sound system, comprising:
an enclosure case that includes an internal space in which a speaker configured to output a virtual engine sound is accommodated and the internal space operates as a case enclosure in which a low band amplification of the engine sound is performed; and
an enclosure back beam divided into a speaker enclosure having an internal space deformed by an external shock and having a speaker protruding surface of the enclosure case inserted into the internal space to amplify a low band and then transfer the amplified low band as an external output and an expanded enclosure inserted with an enclosure connection part of the enclosure case to perform the low band amplification.

2. The enclosure expansion type virtual engine sound system of claim 1 , wherein the enclosure case is coupled with the enclosure back beam and a portion of the speaker forms an exposed portion at a lower portion of the enclosure back beam.

3. The enclosure expansion type virtual engine sound system of claim 2 , wherein the exposed portion of the speaker has a diameter of about half of the speaker.

4. The enclosure expansion type virtual engine sound system of claim 1 , wherein the speaker protruding surface is configured to transmit the engine sound to be propagated to the speaker enclosure and the enclosure connection part has the expanded enclosure communicate with the case enclosure through an air aperture formed on the enclosure connection part.

5. The enclosure expansion type virtual engine sound system of claim 4 , wherein the enclosure connection part protrudes higher than the speaker protruding surface in the enclosure case.

6. The enclosure expansion type virtual engine sound system of claim 5 , wherein the speaker protruding surface is formed on a speaker cover that covers a speaker position aperture formed on the enclosure case.

7. The enclosure expansion type virtual engine sound system of claim 4 , wherein the speaker protruding surface is coupled with a lower back beam pad to be inserted into the speaker enclosure and the enclosure connection part is coupled with an upper back beam pad to be inserted into the expanded enclosure.

8. The enclosure expansion type virtual engine sound system of claim 1 , wherein the enclosure back beam is configured to include a lower back beam forming the speaker enclosure, an upper back beam forming the expanded enclosure, and a back beam connection part that separates the speaker enclosure and the expanded enclosure while integrally connecting between the lower back beam and the upper back beam.

9. The enclosure expansion type virtual engine sound system of claim 8 , wherein the lower back beam includes a speaker output inlet aperture into which inserting the speaker protruding surface is inserted and the upper back beam includes an insertion aperture into which the enclosure connection part is inserted.

10. The enclosure expansion type virtual engine sound system of claim 8 , wherein the speaker enclosure includes left and right engine sound ports through which the engine sound is output and the left and right engine sound ports are formed at left and right opened end portions of the speaker enclosure.

11. The enclosure expansion type virtual engine sound system of claim 8 , wherein the speaker enclosure communicates with an auxiliary engine sound port and the auxiliary engine sound port is positioned at any one of left and right end portions of the speaker enclosure.

12. The enclosure expansion type virtual engine sound system of claim 8 , wherein the speaker enclosure includes a reflecting plate and the reflecting plate is configured to output the engine sound to left and right end portions of the speaker enclosure.

13. The enclosure expansion type virtual engine sound system of claim 12 , wherein the reflecting plate includes a section structure of an inverted triangle of which the vertex is disposed toward the speaker protruding surface.

14. The enclosure expansion type virtual engine sound system of claim 1 , wherein left and right spaces of a lower portion of the enclosure case not covered with the enclosure back beam are each applied as part mounting spaces in which horns are mounted.

15. A vehicle, comprising:
a virtual engine sound system having an internal space divided into an enclosure case formed with a case enclosure that accommodates a speaker through which a virtual engine sound is output, a speaker enclosure, and an expanded enclosure as an expanded space of the case enclosure for low band amplification of the engine sound and a space in which the engine sound is output in three directions; and
a front bumper configured to have the virtual engine sound system positioned therein to be blocked from the outside and diffuse the engine sound output from the virtual engine sound system in three directions of a front side and left and right sides.

16. The vehicle of claim 15 , wherein the engine sound output system is connected to a vehicle body of an engine room by left and right crash boxes and is connected to the front bumper by left and right supports.

17. The vehicle of claim 15 , wherein the virtual engine sound system is applied to an environmentally friendly vehicle and the environmentally friendly vehicle is a hybrid electric vehicle (HEV) or an electric vehicle (EV).

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Young

Classifications

• H04R1/2819 Primary

  for loudspeaker transducers · CPC title

• B60C5/008 Primary

  Low pressure tyres, e.g. for all terrain vehicles · CPC title

• H04R1/026 Primary

  Supports for loudspeaker casings · CPC title

• H04R2499/13

  Acoustic transducers and sound field adaptation in vehicles · CPC title

• H04R1/2842

  for loudspeaker transducers · CPC title