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Sound-producing device for vehicle

A sounding device and vehicle technology, applied in signal devices, vehicle parts, sound signal devices, etc., can solve the problems of not being easy to notice the vehicle, driving sound and pedestrians, etc., and achieve the effect of improving NV performance and preventing vibration

Active Publication Date: 2021-01-26
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When electric vehicles and hybrid vehicles use electric motors to drive at low speeds, there is a problem that the driving sound is low and pedestrians are not easy to notice the approaching vehicles

Method used

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  • Sound-producing device for vehicle
  • Sound-producing device for vehicle
  • Sound-producing device for vehicle

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Experimental program
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Effect test

no. 1 Embodiment approach

[0055] First, based on Figure 1 to Figure 6 The first embodiment of the present invention will be described.

[0056] Such as figure 1 As shown, the front fender inner part 11 arranged in the front of the vehicle body of an electric vehicle that does not have a gasoline engine but runs with the driving force of an electric motor includes: a fender main body 13 covering the front of the right front wheel 12; and The lower cover portion 14 extends forward from the front lower end of the fender body portion 13 . A body frame 15 having a hollow closed cross section is disposed above the front fender inner 11 , and a speaker 17 is attached to the lower surface of the body frame 15 via a bracket 16 .

[0057] Such as Figure 2 to Figure 6As shown, the bracket 16 obtained by stamping a metal plate includes: a flat bottom wall portion 16a; a side wall portion 16b formed by bending the right end portion of the bottom wall portion 16a downward; a left end portion of the bottom wall ...

no. 2 Embodiment approach

[0075] Next, based on Figure 7 A second embodiment of the present invention will be described.

[0076] In the first embodiment, the grooves 25 a and 25 b constitute the shock absorbing portion of the duct body 25 , but in the second embodiment, the bellows portion 25 c constitutes the shock absorbing portion of the duct body 25 . The bellows portion 25c is easier to deform vertically or horizontally than the groove portions 25a, 25b, so that the rigidity of the duct body 25 can be effectively reduced, and transmission of vibration and impact from the lower cover portion 14 to the speaker 17 can be further reduced.

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Abstract

A sound-producing device for a vehicle includes a sound-generating means (17), an opening (14a) provided in a vehicle body bottom (14), and a duct (20) connecting the sound-generating means to the opening. By amplifying the acoustic pressure of the sound produced by the sound-generating means through the duct, and allowing the sound to propagate to the outside of the vehicle via the opening provided in the vehicle body bottom, pedestrians are alerted to the approaching vehicle, the acoustic pressure of the sound-generating means can be reduced in comparison to situations in which a duct is notutilized, and the NV performance in the vehicle cabin can be improved. Additionally, because the duct inlet (21) and outlet (22) are offset in a direction intersecting the vertical axis (L), not onlyis the sound-generating means protected from being wetted or damaged by water and road debris entering through the duct after being splashed up by the tires, but it is also possible, by decreasing the rigidity of the duct, to make vibrations and shocks entering the vehicle body bottom less likely to be transmitted to the sound-generating means via the duct.

Description

technical field [0001] The present invention relates to a sounding device for a vehicle including a sounding mechanism, an opening provided in a vehicle body bottom, and a duct connecting the sounding mechanism and the opening. Background technique [0002] When an electric vehicle or a hybrid vehicle runs at a low speed using an electric motor, there is a problem that the running sound is low and pedestrians hardly notice the approach of the vehicle. Therefore, according to Patent Document 1, the following technology is known: by attaching a speaker that generates a pseudo-running sound to the vehicle body frame, and connecting the speaker to an opening provided in the underbody cover with a downwardly enlarged duct, the The quasi-driving sound from the speakers is efficiently transmitted outside the vehicle. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2011-235774 Contents of the invention [0006] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q5/00G10K15/04
CPCB60Q5/00B60Q5/008H04R2499/13H04R1/345H04R1/025G10K15/04
Inventor 渥美幸也
Owner HONDA MOTOR CO LTD
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