CN216611045U

CN216611045U - Sound device of AVAS system and electric automobile

Info

Publication number: CN216611045U
Application number: CN202123090754.5U
Authority: CN
Inventors: 董恒; 陈福杰; 李付光; 贺洪江
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-27
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a sound device of AVAS system, comprising: the mounting seat can be assembled and mounted on the vehicle body; the sound guide corrugated pipe is a hollow pipe body with open ends at two ends, and the open end at one side of the sound guide corrugated pipe is fixedly connected with the mounting seat; and the loudspeaker assembly is fixedly connected with the opening end of the other side of the sound guide corrugated pipe, wherein: the warning sound emitted from the speaker assembly is conducted to the outside of the vehicle body through the sound guide corrugated pipe. The utility model also discloses an electric automobile. The sound device and the electric automobile of the AVAS system can conduct sound to the outside of the automobile, improve the prompt effect outside the automobile and ensure the sound experience inside the automobile; the structure is simple, and the cost is easy to control.

Description

Sound device of AVAS system and electric automobile

Technical Field

The utility model relates to the field of automobile manufacturing, in particular to an audio device of an AVAS system and an electric automobile.

Background

AVAS (acoustic vehicle warning system) is installed in electric vehicles for ensuring that pedestrians, riders and vulnerable groups can more easily hear such vehicles approaching, but the development of AVAS is currently staying substantially at a level that only meets the regulatory requirements and does not pursue the effectiveness and feasibility of the alert tone. There are contradictions between the prompt effect and the experience of the vehicle owner in the conventional scheme, for example: when the prompt tone requires a larger sound pressure level or a higher (lower) frequency to achieve a better prompt effect, the experience of the vehicle owner is poor, and boring emotion is generated; if the vehicle owner experience is taken as the key point, the sound pressure level of the prompt tone needs to be reduced, and the component sound frequency of the prompt tone is the frequency which is easier to accept, but the effect of the prompt tone is greatly weakened, and the prompt effect cannot be achieved.

In addition, the current AVAS scheme is mostly arranged on an anti-collision beam of a front cabin, and because a new energy vehicle type is not generally provided with an air inlet grille, the new energy vehicle type is mostly of a closed structure; thus, the AVAS is approximately disposed within the closed cavity, easily producing large reflections. On the other hand, because the noise reduction scheme effect of the entire vehicle NVH is limited, the prompt tone is inevitably transmitted into the passenger cabin, and the NVH experience of the passenger cabin is reduced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide the sound device of the AVAS system and the electric automobile, which can conduct sound to the outside of the automobile, improve the prompt effect outside the automobile and ensure the sound experience inside the automobile; the structure is simple, and the cost is easy to control.

In order to solve the above technical problem, an embodiment of the present invention provides an audio apparatus of an AVAS system, including: the mounting seat can be assembled and mounted on the vehicle body; the sound guide corrugated pipe is a hollow pipe body with open ends at two ends, and the open end at one side of the sound guide corrugated pipe is fixedly connected with the mounting seat; and the loudspeaker component is tightly connected with the opening end of the other side of the sound guide corrugated pipe, wherein: the warning sound emitted from the speaker assembly is conducted to the outside of the vehicle body through the sound guide corrugated pipe.

Wherein, the sound guide corrugated pipe is a hose with a rectangular section.

Wherein, the speaker subassembly includes: a front housing; the rear shell is assembled and connected with the front shell into a whole, and an assembly cavity is formed inside the rear shell and the front shell which are assembled; a speaker body mounted in the assembly chamber; and a control unit installed in the assembly chamber, wherein: the control unit is electrically connected with the speaker body.

Wherein, the control unit includes: ECU used for obtaining signal and calling FLASH internal sound source from CAN bus; an audio selection switch; the audio amplifier is used for processing and amplifying the sound source in the FLASH which is called by the ECU and driving the loudspeaker body to give out prompt sound, wherein: ECU, audio frequency selection switch, audio amplifier and speaker body link to each other in proper order.

Wherein, the speaker subassembly still includes: and the connecting bracket is fixedly connected with the front shell and the rear shell respectively.

Wherein, the sound guide corrugated pipe and the front shell are integrally formed.

Wherein, mount pad and leading sound bellows integrated into one piece.

In order to solve the technical problem, the utility model also discloses an electric automobile, wherein a mudguard is arranged on the automobile body of the electric automobile, and the mudguard is connected with the sound device of the AVAS system.

Wherein, the mount pad passes through buckle or screw installation with the fender.

Wherein, the fender is provided with a sound outlet hole, and the prompt tone sent by the loudspeaker component is conducted from the sound outlet hole to the outside of the vehicle through the sound guide corrugated pipe.

The sound device of the AVAS system and the electric automobile provided by the utility model have the following beneficial effects: the audio device of the AVAS system comprises: the mounting seat can be assembled and mounted on the vehicle body; the sound guide corrugated pipe is a hollow pipe body with open ends at two ends, and the open end at one side of the sound guide corrugated pipe is fixedly connected with the mounting seat; and the loudspeaker component is tightly connected with the opening end of the other side of the sound guide corrugated pipe, wherein: the prompt sound emitted by the loudspeaker assembly is conducted to the outside of the vehicle body through the sound guide corrugated pipe, so that the sound can be conducted to the outside of the vehicle, the prompt effect outside the vehicle is improved, and the sound experience in the vehicle is also ensured; the structure is simple, and the cost is easy to control.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of the mounting position of the audio device of the AVAS system of the present invention on the electric vehicle.

Fig. 2 is a schematic diagram of the blasting structure of the audio device of the AVAS system of the present invention.

Fig. 3 is a schematic structural diagram of an audio device of the AVAS system of the present invention.

Fig. 4 is a block diagram showing the configuration of the audio device control unit of the AVAS system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 to 4 show a first embodiment of an audio apparatus of an AVAS system according to the present invention.

The audio device Y of the AVAS system in this embodiment is mounted on a fender T of an electric vehicle body, and includes: the mounting seat 1 can be assembled and mounted on a vehicle body; the sound guide corrugated pipe 2 is a hollow pipe body with

opening ends

21 and 22 at two ends, and the opening end 21 at one side of the sound guide corrugated pipe 2 is fixedly connected with the mounting seat 1; and a speaker assembly fastened to the open end 22 of the other side of the sound guide corrugated tube, wherein: the warning sound emitted from the speaker assembly is transmitted to the outside of the vehicle body through the sound outlet hole of the fender T after passing through the sound guide corrugated pipe 2.

During concrete implementation, the sound device of the AVAS system can give out enough prompt sound for personnel outside the automobile when the electric automobile runs at a low speed in a pure electric mode, and the sound device accords with the specification standard of the sound pressure level of relevant frequency, so that the sound experience in the automobile is optimized, the safety of the automobile is guaranteed, and the experience of an automobile owner in the low speed running process is promoted.

Further, the mounting seat 1 is a circular thin plate, and the peripheral edge thereof is provided with mounting holes 11 so as to be mounted and connected on the corresponding position of the mudguard T of the electric automobile body, for example: the mounting seat 1 and the vehicle body mudguard T are mounted through a buckle or a screw.

The sound guide corrugated pipe 2 is a hose with a rectangular section, so that the sound guide corrugated pipe has certain telescopic performance and is convenient to assemble at different positions of a vehicle body. One side open end 21 of the sound guiding corrugated pipe 2 is integrally connected to the mounting base 1, and in other embodiments, the mounting base 1 and the sound guiding corrugated pipe 2 can be integrally formed, so that the sealing performance is enhanced, the quality of a product is improved, and the service life of the product is prolonged.

Further, the speaker assembly includes: a front case 31; a rear housing 32 assembled with the front housing 31 into a whole, wherein an assembly cavity M is formed inside the rear housing 32 and the front housing 31; a speaker body 33 mounted in the mounting chamber M; and a control unit 34 installed in the assembly chamber, wherein: the control unit 34 is electrically connected to the speaker body 33.

In practice, the front shell 31 is tightly connected to the other side opening end 32 of the sound guide corrugated tube 2, and the front shell 31 and the rear shell 32 are assembled by a snap. In other embodiments, the sound guiding corrugated tube 2 and the front shell 31 are integrally formed, so as to enhance the sealing performance, improve the quality of the product and prolong the service life of the product.

Preferably, the speaker assembly further comprises: and a connecting bracket 35 fixedly connected with the front case 31 and the rear case 32, respectively. In practice, one side of the loudspeaker assembly of the audio device of the AVAS system can be matched and fixed on the corresponding position of the vehicle body through the connecting bracket 35. Meanwhile, the connecting bracket 35 can be designed in various structures according to the vehicle body, the connecting bracket 35 is assembled with the front shell 31 through screws, and the rear shell 32 is of a square structure. The speaker body 33 and the control unit 34 are mounted by screws in the internal mounting chamber M where the rear case 32 and the front case 31 are mounted.

Further, the control unit 34 includes: an ECU341 for acquiring signals from the CAN bus and for calling a source of sound in the FLASH; an audio selection switch 342; an audio amplifier 343 for processing and amplifying the sound source in the FLASH called by the ECU and driving the speaker body 33 to emit a warning sound, wherein: the ECU341, the audio selection switch 342, the audio amplifier 343, and the speaker body 33 are connected in this order.

In implementation, the ECU341 obtains signals of vehicle speed, gear, ready and the like through the CAN bus, processes corresponding information, calls a sound source in the FLASH, amplifies the sound source through the audio amplifier 343(AMP), and drives the speaker body 33 to emit a warning sound. Wherein: the warning sound is conducted from the sound outlet of the mudguard TDE to the outside of the vehicle through the sound guide corrugated pipe 2. The sound is transmitted out of the vehicle through the sound guide corrugated pipe 2, so that the reflection in the cabin of the vehicle is avoided, and the sound experience of the passenger cabin is reduced.

The sound device and the electric automobile implementing the AVAS system have the following beneficial effects:

first, an audio device of the AVAS system includes: the mounting seat can be assembled and mounted on the vehicle body; the sound guide corrugated pipe is a hollow pipe body with open ends at two ends, and the open end at one side of the sound guide corrugated pipe is fixedly connected with the mounting seat; and the loudspeaker component is tightly connected with the opening end of the other side of the sound guide corrugated pipe, wherein: the prompt tone that speaker subassembly sent can be with sound conduction outside the car to the automobile body through leading the outside conduction of sound bellows, when guaranteeing vehicle security, promotes the experience of car owner when low-speed traveling.

Secondly, the structure is simplified, and the cost is easy to control.

Claims

1. Audio apparatus of an AVAS system, comprising:

the mounting seat can be assembled and mounted on the vehicle body;

the sound guide corrugated pipe is a hollow pipe body with open ends at two ends, and the open end at one side of the sound guide corrugated pipe is fixedly connected with the mounting seat; and

speaker subassembly, speaker subassembly with the open end fastening of leading sound bellows opposite side links to each other, wherein:

the prompt sound emitted by the loudspeaker component is conducted to the outside of the vehicle body through the sound guide corrugated pipe.

2. The audio device of an AVAS system of claim 1, wherein said sound-guide bellows is a flexible tube having a rectangular cross-section.

3. The audio device of an AVAS system of claim 1, wherein the speaker assembly comprises:

a front housing;

the rear shell is assembled and connected with the front shell into a whole, and an assembly cavity is formed in the rear shell and the front shell which are assembled;

a speaker body mounted in the assembly chamber; and

a control unit installed in the assembly chamber, wherein: the control unit is electrically connected with the speaker body.

4. The audio device of an AVAS system of claim 3, wherein the control unit comprises:

ECU used for obtaining signal and calling FLASH internal sound source from CAN bus;

an audio selection switch;

the audio amplifier is used for processing and amplifying the sound source in the FLASH called by the ECU and driving the loudspeaker body to give out prompt sound, wherein:

the ECU, the audio selection switch, the audio amplifier and the loudspeaker body are connected in sequence.

5. The audio device of an AVAS system of claim 3, wherein the speaker assembly further comprises: and the connecting brackets are respectively fastened and connected with the front shell and the rear shell.

6. The audio device of claim 3, wherein said sound-guiding bellows is integrally formed with said front housing.

7. The audio device of an AVAS system of claim 1, wherein said mounting base is integrally formed with said sound guiding bellows.

8. An electric vehicle having a fender attached to a body thereof, wherein the fender is connected to an audio system of an AVAS system as claimed in any one of claims 1 to 7.

9. The electric vehicle of claim 8, wherein the mounting seat is mounted to the fender by a snap or screw.

10. The electric vehicle according to claim 8, wherein the fender is provided with a sound outlet hole, and the warning sound from the speaker unit is transmitted to the outside of the vehicle through the sound guide bellows from the sound outlet hole.