A new energy vehicle acceleration sound simulation generating device

Abstract

The utility model relates to a new energy vehicle acceleration sound simulation generating device, the base of middle core magnetoresistive column supports magnet, the middle part of middle core magnetoresistive column is columnar middle core polar plate, magnet is sequentially provided with sound pad, upper clamping plate, acoustic cavity cylinder and is locked through screw, the horizontal edge of sound film is clamped between acoustic cavity cylinder and upper clamping plate, the vertical edge of sound film coil gap is arranged between sound pad and middle core polar plate, the inner wall of radiation number cylinder is integrally connected with middle cylinder through a plurality of rib plates, the middle cylinder gap is covered on acoustic cavity cylinder, the lower end of middle cylinder is folded out flanging upwards, and the inner wall of middle cylinder is provided with conical sound distribution head corresponding the upper mouth of acoustic cavity cylinder. Its simple structure can better adapt to the compact use of car, and meet the acceleration sound simulation generating diffusion demand.

Description

Technical Field

[0001] This utility model relates to a loudspeaker, specifically a device for simulating the acceleration sound of new energy vehicles. Background Technology

[0002] With the rapid development of new energy vehicle technology, the noise generated during operation has been significantly reduced. While this quieter characteristic improves driving comfort, it also brings serious safety hazards to pedestrians. Pedestrians, non-motorized vehicle riders, and other road users cannot easily perceive the approach and acceleration of new energy vehicles through sound, which can easily lead to collisions. To address these safety issues, relevant domestic and international regulations (such as the UN ECE R138 regulation and my country's GB 7258-2017 "Technical Conditions for Safe Operation of Motor Vehicles") clearly require that new energy vehicles be equipped with an acoustic warning system during acceleration. This system simulates acceleration sounds similar to those of traditional gasoline vehicles or specific warning sounds to transmit vehicle status signals to the surrounding environment. Against this backdrop, new energy vehicle acceleration sound simulation devices have emerged and become one of the core safety components of new energy vehicles. Traditional mid-frequency horn structures are complex and have a large overall size, making them unsuitable for compact use in automobiles. Furthermore, their mid-frequency energy loss and certain directional sound transmission performance make them unsuitable for use in transmitting sound to the surrounding environment. Summary of the Invention

[0003] This invention provides a new energy vehicle acceleration sound simulation generator with a simple structure that can be well adapted to compact use in automobiles and meets the requirements for acceleration sound simulation and diffusion.

[0004] The technical solution adopted by this utility model is: a new energy vehicle acceleration sound simulation generating device, including a radiating horn, a sound cavity cylinder, a sound diaphragm, an upper clamping plate, a sound pad, and a magnet. The sound cavity cylinder is locked and connected to the radiating horn. The feature is that it also includes a central magnetic guide column. The magnet is supported on the base of the central magnetic guide column. The middle part of the central magnetic guide column is a columnar central pole plate. The sound pad, the upper clamping plate, and the sound cavity cylinder are sequentially arranged on the magnet and locked with screws. The horizontal edge of the sound diaphragm is clamped between the sound cavity cylinder and the upper clamping plate. The vertical edge of the sound diaphragm is placed between the sound pad and the central pole plate. The inner wall of the radiating horn is integrally connected to a middle cylinder by multiple ribs. The gap of the middle cylinder is covered on the sound cavity cylinder. The lower end of the middle cylinder is folded upward and turned out with a flange. A conical sound splitter is set on the inner wall of the middle cylinder corresponding to the upper opening of the sound cavity cylinder.

[0005] The flip angle of the flange is greater than the angle between the lower end of the middle cylinder and the wall of the radial cylinder.

[0006] The cone tip of the cone-shaped transducer has a smooth transition.

[0007] The upper opening of the acoustic cavity tube has an enlarged opening structure.

[0008] The maximum circular radius of the inner cylinder of the radiating horn is not less than the height of the radiating horn.

[0009] The upper clamping plate is connected to the input signal line of the voice coil on its side.

[0010] The beneficial effects of this utility model are: 1. Employing an integrated design with a central magnetic column, the structure supporting the magnet at the base is integrated with the columnar central pole plate into a single component, replacing the dispersed magnetic structure of traditional speakers. This effectively simplifies the overall structure and reduces the height, perfectly fitting the limited installation space in automobiles. Simultaneously, the magnet, sound pad, upper clamp, and acoustic cavity are sequentially locked and stacked with screws, forming a compact vertical assembly structure. This avoids the problem of excessive overall height caused by the complexity of components in traditional mid-frequency speakers, allowing for flexible installation in the gaps or reserved spaces within the body of new energy vehicles.

[0011] 2. A conical crossover head is used to evenly distribute the sound waves emitted from the acoustic cavity, avoiding diffusion dead zones caused by localized sound wave concentration. Combined with the enlarged opening structure at the top of the acoustic cavity, the sound wave output area can be amplified, reducing sound wave congestion within the cavity. The arc-shaped transition flange at the lower end of the middle cylinder guides the mid-frequency sound waves to radiate forward, reducing sound wave diffraction at the edge of the middle cylinder and reflection within the radiating horn. This solves the problem of poor directivity and difficulty in transmitting sound to the surrounding environment in traditional horns, optimizing the diffusion range and directivity of the acceleration sound to meet the simulation generation needs around the car.

[0012] 3. Through structural optimization, multiple stiffening plates on the inner wall of the radiating horn are integrally connected to the central tube. These stiffening plates enhance the rigidity of both the central and radiating horns, suppressing resonance losses caused by vibration and preventing energy loss due to structural vibration. The central tube gap cover is fitted onto the acoustic cavity, and the curved transition of the flange reduces diffraction of sound waves at the edge of the central tube and reflection within the radiating horn, minimizing energy loss during sound wave propagation. The maximum circular radius of the central tube is no less than the height of the radiating horn, providing ample diffusion space for sound waves and further reducing energy congestion and loss. This ensures that the accelerating sound is clearly transmitted to the surrounding environment, thereby comprehensively achieving efficient transmission of sound wave energy and ensuring that the mid-frequency-dominant accelerating sound maintains sufficient intensity and clarity during transmission. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] In the diagram: 1. Radial horn, 2. Rib plate, 3. Middle tube, 4. Flange, 5. Conical crossover head, 6. Input signal line, 7. Screw, 8. Upper clamp plate, 9. Sound pad, 10. Horizontal edge, 11. Voice coil, 12. Magnet, 13. Central magnetic guide post, 14. Base, 15. Central pole plate, 16. Sound cavity tube. Detailed Implementation

[0015] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0016] Figure 1 As shown: A device for simulating acceleration sound of a new energy vehicle includes a radiating horn 1, a stiffening plate 2, a middle cylinder 3, a flange 4, an input signal line 6, a screw 7, an upper clamping plate 8, a sound pad 9, a sound diaphragm 10, a magnet 13, a central magnetic guide column 14, and a sound cavity cylinder 17.

[0017] A magnet 13 is supported on the base 15 of the core magnetic column 14. The middle part of the core magnetic column 14 is a columnar core plate 16. A sound pad 9, an upper clamping plate 8, and a sound cavity cylinder 17 are sequentially arranged on the magnet 13 and locked with screws 7. The horizontal edge 11 of the diaphragm 10 is clamped between the sound cavity cylinder 17 and the upper clamping plate 8. The vertical edge of the voice coil 12 of the diaphragm 10 is placed between the sound pad 9 and the core plate 16. The side of the upper clamping plate is connected to the input signal line 6 connecting the voice coil. The inner wall of the radiating horn 1 is integrally connected to the middle cylinder 3 by multiple stiffeners 2. The middle cylinder 3 is fitted onto the sound cavity cylinder 17. The lower end of the middle cylinder 3 is folded upward to form a flange 4. The inner wall of the middle cylinder 3 is provided with a conical crossover head 5 with a smooth transition at the top corresponding to the upper opening of the sound cavity cylinder 17.

[0018] Based on this embodiment, it is preferable to design the flipping angle of the flange to be greater than the angle between the lower end of the middle cylinder and the wall of the radial horn.

[0019] Based on this embodiment, it is preferable to have an enlarged opening at the top of the acoustic cavity.

[0020] Based on this embodiment, it is preferable to design the maximum circular radius of the inner cylinder of the radiating horn to be no less than the height of the radiating horn.

Claims

1. A device for simulating acceleration sound in new energy vehicles, comprising a radiating horn, a acoustic cavity, a diaphragm, an upper clamping plate, an acoustic pad, and a magnet, wherein the acoustic cavity is locked and connected to the radiating horn, characterized in that: It also includes a central magnetic column, with a magnet supported on the base of the central magnetic column. The central magnetic column has a columnar central pole plate in the middle. A sound pad, an upper clamping plate, and a sound cavity cylinder are sequentially arranged on the magnet and locked with screws. The horizontal edge of the sound diaphragm is clamped between the sound cavity cylinder and the upper clamping plate. The vertical edge of the sound diaphragm is placed between the sound pad and the central pole plate. The inner wall of the radiating horn is integrally connected to a middle cylinder by multiple ribs. The gap of the middle cylinder is covered on the sound cavity cylinder. The lower end of the middle cylinder is folded upward and turned out with a flange. A conical crossover head is set on the inner wall of the middle cylinder corresponding to the upper opening of the sound cavity cylinder.

2. The acceleration sound simulation generator for new energy vehicles according to claim 1, characterized in that: The flip angle of the flange is greater than the angle between the lower end of the middle cylinder and the wall of the radial cylinder.

3. The device for simulating acceleration sound of a new energy vehicle according to claim 1, characterized in that: The cone tip of the cone-shaped transducer has a smooth transition.

4. The device for simulating acceleration sound of a new energy vehicle according to claim 1, characterized in that: The upper opening of the acoustic cavity tube has an enlarged opening structure.

5. The device for simulating acceleration sound of a new energy vehicle according to claim 1, characterized in that: The maximum circular radius of the inner cylinder of the radiating horn is not less than the height of the radiating horn.

6. The device for simulating acceleration sound of a new energy vehicle according to claim 1, characterized in that: The upper clamping plate is connected to the input signal line of the voice coil on its side.

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