Vehicle engine simulation sound speaker and vehicle

Abstract

A vehicle engine simulation sound speaker and a vehicle. The vehicle engine simulation sound speaker comprises a housing body and a sound production assembly. The housing body is connected to an underbody protection plate of a vehicle body, and the housing body is provided with a sound outlet facing the outside of the vehicle body. The sound production assembly is arranged in the housing body, and the sound produced by the sound production assembly is conducted to the outside of the vehicle body through the sound outlet.

Description

Car engine analog sound speakers and cars

[0001] This application claims priority to Chinese patent application No. 202421617832.3, filed on July 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of loudspeaker technology, and more particularly to a car engine analog sound loudspeaker and a car. Background Technology

[0003] The car engine simulated sound speaker is an audible warning device. When the vehicle speed is less than a preset speed (such as 20km / h or 30km / h), the car engine simulated sound speaker emits a sound to remind pedestrians that a vehicle is approaching and to be careful. Summary of the Invention

[0004] This disclosure provides a car engine simulated sound speaker and a car to solve the technical problem in the related art where the sound pressure level energy generated by the car engine simulated sound speaker is transmitted inside the cabin, making the driver and passengers feel it clearly and affecting their user satisfaction.

[0005] In a first aspect, a car engine simulated sound loudspeaker is provided. The car engine simulated sound loudspeaker is configured to be mounted to a vehicle body and includes a housing body and a sound-generating assembly. The housing body is adapted to connect to the underbody of the vehicle body and has a sound outlet facing the outside of the vehicle body; the sound-generating assembly is disposed within the housing body, and sound emitted by the sound-generating assembly is conducted to the outside of the vehicle body through the sound outlet.

[0006] In some embodiments, the outer shell body is provided with a sound amplification cavity, which is an outwardly expanding cavity structure; the small end of the sound amplification cavity is close to the sound-generating component; and the large end of the sound amplification cavity is the sound outlet.

[0007] In some embodiments, the car engine analog speaker further includes a speaker grille located at the small end of the amplification cavity.

[0008] In some embodiments, the car engine analog speaker further includes a speaker grille, the speaker grille having a cylindrical structure, the top of the cylindrical structure being connected to the housing body, and the bottom of the cylindrical structure having a grille structure.

[0009] In some embodiments, the loudspeaker grille includes at least two grille layers; the at least two grille layers are stacked in the axial direction of the loudspeaker grille, and the ribs between adjacent grille layers are staggered.

[0010] In some embodiments, the end of the housing body having the sound outlet is adapted to connect with the underbody panel.

[0011] In some embodiments, the surface of the housing body facing away from the sound outlet is a convex arc-shaped surface.

[0012] In some embodiments, the housing body includes a main housing and a cover plate. The end of the main housing with the sound outlet is adapted to connect with the underbody panel. The end of the main housing opposite to the sound outlet is connected to the cover plate, and the sound-generating assembly is disposed within the main housing. The outer surface of the cover plate protrudes in a direction opposite to the sound outlet to form an arcuate surface.

[0013] In some embodiments, the car engine analog speaker further includes a sound insulation component connected to the housing body.

[0014] In some embodiments, the sound insulation component is sound insulation cotton, and the end of the outer shell body facing away from the sound outlet is connected to the sound insulation cotton.

[0015] In some embodiments, the sound insulation component is sound insulation cotton, and the outer shell body, except for the sound outlet, is connected to the sound insulation cotton.

[0016] In some embodiments, the sound insulation member is at least one sound insulation protrusion, one end of which is connected to the surface of the housing body facing the sound-generating component and away from the sound outlet, and the other end of which extends toward the sound-generating component.

[0017] In some embodiments, the at least one sound-insulating protrusion includes a plurality of sound-insulating protrusions, which together form a labyrinth structure.

[0018] In some embodiments, the at least one sound-insulating protrusion has a T-shaped structure on a plane perpendicular to the extending direction of the at least one sound-insulating protrusion. The plurality of sound-insulating protrusions are arranged in an array, with two or more sound-insulating protrusions in any row having the same orientation, and the sound-insulating protrusions in adjacent rows having opposite orientations and being staggered.

[0019] In some embodiments, the end of the outer shell body away from the sound outlet has a double-layer structure, and a vacuum cavity is formed between the double-layer structure.

[0020] In some embodiments, the automotive engine analog speaker further includes a vibration damper adapted to reduce vibration transmission between the automotive engine analog speaker and the underbody protection panel.

[0021] In some embodiments, the vibration damper is configured to connect between the end of the housing body having the sound outlet and the underbody panel.

[0022] Secondly, a car is provided. The car includes a body, the body having a passenger compartment, an underbody panel, and the aforementioned car engine simulation speaker. The underbody panel is connected to the car engine simulation speaker, and the speaker's sound outlet is oriented away from the passenger compartment.

[0023] In some embodiments, the underbody of the car engine analog speaker is provided with a grille; the end of the outer main housing with the sound outlet is connected to the underbody, and the sound outlet of the outer housing body faces the grille.

[0024] In some embodiments, the housing of the car engine analog speaker is connected to the underbody panel at the center of the vehicle body in the left-right direction.

[0025] Regarding the related technologies, this disclosure has the following advantages:

[0026] In some embodiments of this disclosure, the car engine simulated sound speaker has a housing body connected to the underbody of the vehicle. The housing body has a sound outlet facing outwards from the vehicle body. The sound-generating component is located inside the housing body, and the sound emitted by the component is directly transmitted to the outside of the vehicle through the sound outlet. This results in a shorter sound transmission distance and better sound quality. Furthermore, it eliminates the need for conduits, reducing sound propagation loss. Because the housing body is connected to the underbody, the sound outlet is not enclosed within the vehicle interior, thus reducing sound transmission into the passenger compartment and effectively lowering the sound pressure level inside the vehicle, improving the vehicle's usability. Moreover, since the sound-generating component is not surrounded by the vehicle body or underbody, the car engine simulated sound speaker can operate with lower power while meeting regulatory requirements. This effectively reduces the relative sound energy transmitted into the vehicle interior, thereby reducing noise fatigue for occupants. Furthermore, the underbody protection plate has high structural strength and stability. The outer shell body can be directly connected to the underbody protection plate. Compared to the connection between the outer shell body 10 and components such as mudguards, which requires the use of conduits, the connection is easier, simpler, and more convenient, resulting in a better and more stable installation environment. The sound outlet of the outer shell body is located at the underbody protection plate, which avoids sound mixing and improves the sound effect compared to the sound outlet corresponding to noisy locations such as tires. Therefore, the automotive engine simulated sound speaker of some embodiments of this disclosure has the advantages of high sound propagation efficiency, better sound effect, and simple structure; and reduces the transmission of sound into the passenger compartment, thereby improving the vehicle's usability.

[0027] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure or related technologies, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0029] Figure 1 is a perspective view of a car engine simulated sound speaker according to some embodiments;

[0030] Figure 2 is a cross-sectional view of a car engine analog speaker according to some embodiments;

[0031] Figure 3 is a perspective view of a speaker grille according to some embodiments;

[0032] Figure 4 is a cross-sectional view of a speaker grille according to some embodiments;

[0033] Figure 5 is a bottom view of a speaker grille according to some embodiments;

[0034] Figure 6 is a structural diagram showing the partial layout of the sound insulation protrusions according to some embodiments;

[0035] Figure 7 is a partial structural diagram of the outer casing body according to some embodiments. Detailed Implementation

[0036] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0037] Currently, car engine analog speakers are typically mounted on the front bumper of electric vehicles. Since the front grille of electric vehicles is largely enclosed, the engine analog speakers are encased within the car's interior by the windshield, hood, and underbody protection. This causes the sound pressure level energy generated by the speakers to be transmitted within the cabin, making it noticeable to the occupants and affecting the vehicle's performance.

[0038] Therefore, some embodiments of this disclosure provide a car engine simulated sound speaker. This car engine simulated sound speaker is installed in a car and connected to the car body, used to emit a sound to alert pedestrians to the approaching vehicle and to ensure their safety.

[0039] Referring to Figures 1 and 2, the car engine analog speaker includes a housing body 10 and a sound-generating component 30. The housing body 10 is connected to the underbody panel 60 of the vehicle body, and the housing body 10 has a sound outlet 21 facing the outside of the vehicle body. The sound-generating component 30 is disposed inside the housing body 10, and the sound emitted by the sound-generating component 30 is conducted to the outside of the vehicle body through the sound outlet 21.

[0040] The underbody skid plate 60, also known as a chassis skid plate or engine skid plate, is a protective device installed under the chassis of a vehicle. Its primary function is to protect the engine and other critical components from direct impacts and wear caused by harsh road conditions such as gravel, mud, and snow. The underbody skid plate 60 reduces noise and vibration caused by impacts during driving and also prevents damage to components such as the oil pan and transmission. Furthermore, the underbody skid plate considers the vehicle's cooling needs. Since the engine and other components generate heat during operation, the underbody skid plate includes ventilation spaces or cooling channels to allow hot air to escape from the engine compartment, preventing overheating of the engine and other components.

[0041] The outer shell 10 can be connected to the side guard plate, rear lower guard plate or other positions of the underbody 60 that do not affect the wind resistance and protection of the vehicle, and can directly connect the sound outlet 21 to the air.

[0042] In some embodiments of this disclosure, the outer casing 10 is connected to the underbody panel 60 of the vehicle body, and the outer casing 10 is provided with a sound outlet 21 facing the outside of the vehicle body. The sound-generating component 30 is disposed inside the outer casing 10, and the sound emitted by the sound-generating component 30 is directly transmitted to the outside of the vehicle body through the sound outlet 21. The sound transmission distance is short, and the sound effect is better. Moreover, it does not require pipes or other means of propagation, which can also reduce sound propagation loss. In order to connect the outer casing 10 to the underbody panel 60, the sound outlet 21 of the outer casing 10 is not enclosed inside the car, thereby reducing the transmission of sound into the passenger compartment, effectively reducing the sound pressure level inside the vehicle, and improving the vehicle's usability. Furthermore, since the sound-generating component 30 is not surrounded by the car body and the underbody panel, it can operate the car engine analog speaker with lower power when meeting regulatory requirements, which is equivalent to reducing the relative sound energy transmitted to the inside of the vehicle to a certain extent, thereby reducing noise fatigue of the occupants in the passenger compartment.

[0043] In some embodiments of this disclosure, the underbody protection plate 60 has high structural strength and stability. The outer shell body 10 can be directly connected to the underbody protection plate 60. Compared to connecting the outer shell body 10 to components such as mudguards, which requires the use of conduits, the connection is easier and simpler, and the installation environment is relatively better and more stable. The sound outlet 21 of the outer shell body 10 is located at the underbody protection plate 60. Since the sound outlet 21 corresponds to noisy locations such as tires, it can avoid sound mixing, reduce the impact of operating conditions, and improve the sound effect. Therefore, the automotive engine analog sound speaker in some embodiments of this disclosure has the advantages of high sound propagation efficiency, better sound effect, and simple structure; it can also reduce the transmission of sound into the passenger compartment, thereby improving the vehicle's usability.

[0044] In some embodiments, referring to FIG2, the outer shell body 10 is provided with a sound amplification cavity 12, which is an outwardly expanding cavity structure. The small end of the sound amplification cavity 12 is close to the sound-generating component 30; the large end of the sound amplification cavity 12 is the sound outlet 21.

[0045] When the car engine simulated sound speaker is in use, the sound emitted by the sound-generating component 30 enters the amplification cavity 12 through the small end of the amplification cavity 12, and then exits from the large end of the amplification cavity 12. The amplification cavity 12 has an outward-expanding cavity structure, which can increase the efficiency of sound propagation forward, so as to diffuse more sound pressure level energy to the outside of the vehicle body and improve the sound pressure level in the mid and high frequencies.

[0046] In some embodiments, as shown in FIG2, the amplification cavity 12 has a frustum-shaped structure, with the small end of the frustum-shaped structure close to the sound-generating component 30 and the large end of the frustum-shaped structure being the sound outlet 21.

[0047] In some embodiments, the amplification cavity 12 is a conical structure with arc-shaped walls. The amplification cavity 12 can also be a combination of a frustum-shaped structure and a cylinder. It is understood that this disclosure does not limit the structure of the amplification cavity 12, as long as the amplification cavity 12 can improve the efficiency of sound energy propagation forward.

[0048] In some embodiments, as shown in FIG2, the car engine analog speaker further includes a speaker grille 14, which is disposed at the small end of the sound amplification cavity 12.

[0049] The speaker grille 14 facilitates the output of sound emitted by the sound-generating assembly 30. In some embodiments of this disclosure, the speaker grille 14 is located at the small end of the sound amplification cavity 12. Compared to the speaker grille 14 being located at the sound outlet 21, the speaker grille 14 has a smaller structural size, and the structure of the housing body 10 is more compact.

[0050] In some embodiments, as shown in FIG2, the car engine analog sound speaker further includes a speaker grille 14, which is cylindrical in shape. The top end of the cylindrical structure (i.e., the end of the cylindrical structure away from the underbody 60) is connected to the housing body 10, and the bottom end of the cylindrical structure (i.e., the end of the cylindrical structure near the underbody 60) is provided with a grille structure 15.

[0051] In some embodiments of this disclosure, the speaker grille 14 has a cylindrical structure. After the top of the cylindrical structure is connected to the outer shell body 10, the four sides and the bottom of the cylindrical structure can protect the sound-generating component 30, resulting in good protection for the sound-generating component 30.

[0052] In some embodiments, referring to FIG2, the outer casing 10 is provided with a cylindrical connecting portion, one end of which is connected to the cavity wall of the amplification cavity located at the small end of the amplification cavity 12. The top end of the speaker grille 14 is connected to the cylindrical connecting portion, and the bottom of the speaker grille 14 extends toward the middle of the amplification cavity 12.

[0053] In some embodiments, the speaker grille 14 includes at least two layers of grilles. The at least two layers of grilles are stacked in the axial direction of the speaker grille 14, and the ribs between adjacent layers of grilles are staggered.

[0054] In some embodiments of this disclosure, the speaker grille 14 includes at least two layers of grilles, which are stacked and arranged in a staggered manner, and the ribs between adjacent layers of grilles are interlaced, thereby effectively preventing rainwater, mud and impurities from contacting the sound-generating component 30 without affecting the sound generation, thus effectively protecting the sound-generating component 30.

[0055] In some embodiments, as shown in Figures 3 to 5, the grid structure 15 has a double-layer structure, with a plurality of first ribs 18 on the first layer and a plurality of second ribs 20 on the second layer, and the first ribs 18 and the second ribs 20 are staggered.

[0056] The spacing L1 between two adjacent first ribs 18 and the spacing between two adjacent second ribs 20 can be set according to usage requirements. For example, referring to Figure 4, the spacing L1 between two adjacent first ribs 18 is 2mm. In the axial direction of the speaker grille 14, the spacing between the first ribs 18 and the second ribs 20 is also set according to usage requirements. For example, referring to Figure 4, the spacing L2 between the first ribs 18 and the second ribs 20 is 2mm.

[0057] Referring to Figures 3 to 5, in order to increase the structural strength of the speaker grille 14, the outer peripheral sidewall of the speaker grille 14 is provided with a concave-convex structure 19.

[0058] In some embodiments, the end of the housing body 10 with the sound outlet 21 is connected to the underbody panel 60. In this case, the housing body 10 does not protrude from the underbody panel 60, and the underbody panel 60 can effectively protect the car engine analog speaker.

[0059] In some embodiments, the surface of the housing body 10 facing away from the sound outlet 21 is a convex arc-shaped surface, which can effectively reduce the accumulation of rainwater, strengthen the overall strength of the housing body 10, and reduce the risk of housing vibration at low frequencies.

[0060] In some embodiments, referring to Figures 1 and 2, the outer casing 10 includes a main housing 11 and a cover plate 16. The end of the main housing 11 with a sound outlet 21 is connected to the underbody panel 60, and the end of the main housing 11 opposite to the sound outlet 21 is connected to the cover plate 16. A sound-generating assembly 30 is provided inside the main housing 11. The outer surface of the cover plate 16 protrudes in the direction opposite to the sound outlet 21 to form an arc-shaped surface.

[0061] In some embodiments of this disclosure, the outer shell body 10 has a split structure, including a main shell 11 and a cover plate 16, which facilitates processing and manufacturing. The outer surface of the cover plate 16 protrudes in the direction away from the sound outlet 21 to form an arc-shaped surface, which can effectively reduce the accumulation of rainwater, strengthen the overall strength of the cover plate 16, and reduce the risk of shell vibration at low frequencies.

[0062] In some embodiments, the car engine analog speaker also includes a sound insulation component connected to the housing body 10.

[0063] In some embodiments of this disclosure, the sound insulation component can reduce sound, thereby reducing the transmission of sound into the passenger compartment, effectively reducing the sound pressure level inside the vehicle, and improving the vehicle's usability.

[0064] For example, the sound insulation component is sound insulation cotton, and the end of the outer shell 10 away from the sound outlet 21 is connected to the sound insulation cotton, thereby reducing the transmission of the sound emitted by the sound-generating component 30 into the passenger cabin, and thus reducing the sound pressure level inside the vehicle.

[0065] For example, the sound insulation component is sound insulation cotton, and the main body 10 of the outer shell, except for the sound outlet 21, is connected to the sound insulation cotton.

[0066] In some embodiments of the present disclosure, when the car engine simulated sound speaker is in use, the outer shell body 10, except for the sound outlet 21, is connected to the sound insulation cotton. This reduces the sound of the outer shell body 10 except for the sound outlet 21 without affecting the transmission of the sound emitted by the sound-generating component 30 to the outside of the vehicle body through the sound outlet 21, thereby reducing the transmission of sound into the passenger compartment.

[0067] In some embodiments, as shown in FIG6, the sound insulation member is a sound insulation protrusion 26. One end of the sound insulation protrusion 26 is connected to the surface of the housing body 10 facing the sound-generating assembly 30 and away from the sound outlet 21, and the other end of the sound insulation protrusion 26 extends toward the sound-generating assembly 30.

[0068] In some embodiments of this disclosure, the sound-insulating protrusion 26 can extend the depth of sound propagation, so that the sound is absorbed by the sound-insulating protrusion 26 during propagation, or is lost during refraction, thereby reducing the sound pressure level of the sound propagating into the cabin and reducing the noise inside the cabin.

[0069] In some embodiments, the sound-insulating protrusions 26 are multiple, and the multiple sound-insulating protrusions 26 form a labyrinth structure.

[0070] In the above-described structure of this embodiment, sound propagating towards the interior of the passenger compartment can come into contact with the labyrinth structure. The energy of the sound waves is absorbed by the labyrinth structure or lost in refraction, thereby reducing the sound pressure level of the sound propagating into the passenger compartment and reducing the noise inside the vehicle.

[0071] In some embodiments, as shown in FIG6, the sound insulation protrusion 26 has a T-shaped structure on a plane perpendicular to the extending direction of the sound insulation protrusion 26; a plurality of sound insulation protrusions 26 are arranged in an array, the arrangement direction of the plurality of sound insulation protrusions 26 in any row is the same, the arrangement direction of the sound insulation protrusions 26 in adjacent rows is opposite, and they are staggered.

[0072] In some embodiments, as shown in FIG7, the end of the outer shell body 10 away from the sound outlet 21 has a double-layer structure, and a vacuum cavity 25 is formed between the double-layer structure. This double-layer structure and the vacuum cavity 25 formed between the double-layer structure can reduce the sound pressure level of the sound propagating into the cabin.

[0073] In some embodiments, as shown in FIG2, the automotive engine analog speaker further includes a vibration damper 50. The vibration damper 50 is used to reduce vibration transmission between the automotive engine analog speaker and the underbody protection plate 60, thereby reducing the impact of vibration on the automotive engine analog speaker.

[0074] For example, referring to Figures 1 and 2, the vibration damper 50 is connected between the end of the housing body 10 where the sound outlet 21 is located and the underbody panel 60. In the above structure, the vibration of the underbody panel 60 can be transmitted to the car engine analog speaker through the vibration damper 50. The vibration damper 50 has the function of damping vibration, which can reduce the transmission of vibration to the car engine analog speaker, thereby reducing the impact of the vibration of the underbody panel 60 on the car engine analog speaker.

[0075] In some embodiments, the damping element 50 is a cushioning foam, a material that protects an item from impact and vibration. Cushioning foam is typically made of materials such as polyethylene foam (PE foam), polyurethane foam (PU foam), expanded polypropylene (EPP), and expanded polystyrene (EPS). Cushioning foam has good elasticity and compressibility, enabling it to absorb and disperse external impact forces, thereby preventing damage to the car engine's analog speaker.

[0076] In some embodiments, as shown in Figures 1 to 5, the car engine analog speaker includes a housing body 10 and a sound-generating component 30.

[0077] The outer casing 10 includes a main casing 11 and a cover plate 16. The main casing 11 is provided with a central support 22, which divides the main casing 11 into a first cavity 23 and a second cavity 24. The first cavity 23, the second cavity 24, and the sound amplification cavity 12 are arranged sequentially, with the larger end of the sound amplification cavity 12 serving as the sound outlet 21. One end of the main casing 11 is provided with the sound outlet 21, and the other end of the main casing 11 is connected to the cover plate 16.

[0078] The sound-generating component 30 includes a U-shaped iron 31, a magnet 32, a washer 33, a voice coil 34, a spider 35, a diaphragm 36, and a dust cap 37.

[0079] U-shaped iron 31 is connected to the middle of the central support 22 and is located in the first cavity. A magnet 32 ​​and a washer 33 are housed within U-shaped iron 31. U-shaped iron 31 is connected to the diaphragm 36 via a voice coil 34. The inner end of the spider 35 is connected to the voice coil 34, and the outer end of the spider 35 is connected to the central support. A dust cap 37 is positioned corresponding to the voice coil 34, and the outer end of the dust cap 37 is connected to the diaphragm 36. The voice coil 34, spider 35, diaphragm 36, and dust cap 37 are all located in the second cavity. When the sound-generating assembly 30 is in use, the voice coil 34 and diaphragm 36 actuate to generate sound.

[0080] The speaker grille 14 is located inside the sound amplification cavity 12. The cavity enclosed by the speaker grille 14 is used to avoid the voice coil 34, diaphragm 36 and dust cap 37, providing space for the movement of the voice coil 34, diaphragm 36 and dust cap 37, and making the structure more compact.

[0081] Furthermore, a housing connection portion 13 is provided on the outer periphery of the main housing 11, which extends from the main housing 11 in a direction away from the main housing 11. The housing connection portion 13 is connected to the underbody protection plate 60 to realize the connection between the housing connection portion 13 and the underbody protection plate 60.

[0082] The housing connecting part 13 and the undercarriage guard plate 60 can be connected in an appropriate manner. For example, the housing connecting part 13 and the undercarriage guard plate 60 can be connected using fasteners such as bolts, which makes connection and disassembly simple and convenient. In this case, a housing mounting hole 17 can be provided on the housing connecting part 13.

[0083] The components of the car engine simulated sound speaker, including the U-shaped iron 31, magnet 32, washer 33, voice coil 34, spider 35, diaphragm 36, dust cap 37, main housing 11, cover plate 16, speaker grille 14, and cushioning foam (such as damping element 50), can all be connected using connection methods that meet usage requirements. For example, the U-shaped iron 31, magnet 32, washer 33, voice coil 34, spider 35, diaphragm 36, dust cap 37, main housing 11, cover plate 16, and speaker grille 14, can be bonded together with adhesive. The main housing 11 is bonded to the cushioning foam with double-sided adhesive.

[0084] In some embodiments of this disclosure, the outer casing 10 is connected to the underbody panel 60 of the vehicle body. The outer casing 10 has a sound outlet 21 facing the outside of the vehicle body. The sound-generating component 30 is disposed inside the outer casing 10, and the sound emitted by the sound-generating component 30 is directly transmitted to the outside of the vehicle body through the sound outlet 21. The sound transmission distance is short, and the sound effect is better. Moreover, no pipes or other means are needed for propagation, which can also reduce sound propagation loss. In order to connect the outer casing 10 to the underbody panel 60, the sound outlet 21 of the outer casing 10 is not closed inside the car, thereby reducing the transmission of sound into the passenger compartment, effectively reducing the sound pressure level inside the vehicle, and improving the vehicle's performance. The underbody panel 60 has high structural strength and stability. The outer casing 10 and the underbody panel 60 can be directly connected. Compared with the connection of the outer casing 10 to components such as mudguards, which requires the use of conduits, the connection is easier and simpler, and the installation environment is relatively better and more stable. The sound outlet 21 of the outer casing 10 is located at the lower guard plate 60. Since the sound outlet 21 corresponds to noisy locations such as tires, sound mixing can be avoided, and the sound effect is improved. Therefore, the car engine analog speaker of some embodiments of this disclosure has the advantages of high sound propagation efficiency, better sound effect, and simple structure; and reduces the transmission of sound into the passenger compartment, thereby improving the vehicle's usability. With an external sound pressure level of 58dB, the internal sound pressure levels driven by wind noise and pink noise are 36dB and 33dB respectively, indicating a significant reduction in the internal sound pressure level, and the occupants of the vehicle can barely perceive the noise.

[0085] This disclosure also discloses an automobile in some embodiments. The automobile includes a vehicle body, the vehicle body having a passenger compartment, a lower guard plate 60, and the aforementioned automobile engine simulated sound speaker. The lower guard plate 60 is connected to the automobile engine simulated sound speaker, and the sound outlet 21 of the automobile engine simulated sound speaker is arranged facing away from the passenger compartment.

[0086] The underbody panel 60 is connected to the car engine analog speaker. Since the underbody panel 60 does not enclose the car engine analog speaker inside the car, it reduces sound transmission into the passenger compartment, effectively reducing the sound pressure level inside the vehicle. Furthermore, because the car engine analog speaker is not surrounded by the car body or the underbody panel, it can operate at lower power to meet regulatory requirements, effectively reducing the relative sound energy transmitted into the vehicle interior and thus reducing noise fatigue for occupants. The speaker outlet 21 is located on the underbody panel 60 and faces away from the passenger compartment. This avoids sound mixing relative to noisy areas such as tires and improves sound quality. Therefore, in some embodiments of this disclosure, connecting the underbody panel 60 to the car engine analog speaker improves sound quality and reduces the sound pressure level in the passenger compartment, enhancing the vehicle's usability.

[0087] The car engine simulated sound speaker is connected to the surface of the underbody 60 facing the vehicle body. The car engine simulated sound speaker can be connected to the side panel, rear underbody panel or other positions of the underbody 60 that do not affect the wind resistance and protection of the vehicle, and the sound outlet 21 of the car engine simulated sound speaker can be directly connected to the air.

[0088] For example, the underbody protection plate 60 is provided with a protection plate grille 61; the end of the main housing 11 with a sound outlet 21 is connected to the underbody protection plate 60, and the sound outlet 21 of the outer housing body 10 is set facing the protection plate grille 61.

[0089] In some embodiments of this disclosure, the guard plate grille 61 is used to guide the sound emitted by the car engine analog speaker. The guard plate grille 61 effectively prevents rainwater, mud and impurities from contacting the car engine analog speaker without affecting the sound output, thereby improving the service life of the car engine analog speaker.

[0090] In some embodiments, the outer casing 10 is connected to the underbody 60 at the center of the vehicle body in the left-right direction, so that the car engine simulated sound speaker can be evenly propagated to the left and right of the car, which has a better warning effect on pedestrians.

[0091] In some embodiments, referring to Figures 1 and 2, the surface of the underbody protection plate 60 is provided with a limiting protrusion 62, and the cavity formed by the limiting protrusion 62 is used to limit the car engine analog speaker. The surface of the underbody protection plate 60 is also provided with a connecting protrusion 63, which is connected to the housing connecting part 13. The connecting protrusion 63 facilitates connection and enhances the strength of the connection.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0093] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0094] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure are included within the scope of protection of this disclosure.

Claims

1. A car engine analog sound loudspeaker configured to be mounted to a vehicle body, comprising a housing body (10) and a sound-generating assembly (30); The outer shell body (10) is adapted to be connected to the underbody panel (60) of the vehicle body, and the outer shell body (10) is provided with a sound outlet (21) facing the outside of the vehicle body; The sound-generating component (30) is disposed inside the outer shell body (10), and the sound emitted by the sound-generating component (30) is transmitted to the outside of the vehicle body through the sound outlet (21).

2. The car engine simulated sound loudspeaker according to claim 1, wherein, The outer shell body (10) is provided with a sound amplification cavity (12), which is an outwardly expanding cavity structure; The small end of the amplification cavity (12) is close to the sound-generating component (30); The larger end of the amplification cavity (12) is the sound outlet (21).

3. The car engine simulated sound loudspeaker according to claim 2 further includes a loudspeaker grille (14), the loudspeaker grille (14) being disposed at the small end of the sound amplification cavity (12).

4. The car engine simulated sound loudspeaker according to claim 1 further includes a loudspeaker grille (14), the loudspeaker grille (14) is in the form of a cylindrical structure, the top end of the cylindrical structure is connected to the outer shell body (10), and the bottom of the cylindrical structure is provided with a grille structure (15).

5. The automotive engine simulated sound loudspeaker according to claim 4, wherein, The loudspeaker grille (14) includes at least two layers of grilles; in the axial direction of the loudspeaker grille (14), the at least two layers of grilles are stacked, and the ribs between adjacent layers of grilles are interlaced.

6. The automotive engine analog sound speaker according to any one of claims 1 to 5, wherein, The end of the outer shell body (10) with the sound outlet (21) is adapted to be connected to the underbody panel (60).

7. The automotive engine simulated sound loudspeaker according to claim 6, wherein, The surface of the outer shell body (10) facing away from the sound outlet (21) is a convex arc-shaped surface.

8. The automotive engine simulated sound loudspeaker according to claim 6, wherein, The outer shell body (10) includes a main shell (11) and a cover plate (16). The end of the main shell (11) with the sound outlet (21) is adapted to be connected to the undercarriage guard plate (60). The end of the main shell (11) away from the sound outlet (21) is connected to the cover plate (16). The sound-generating component (30) is provided inside the main shell (11). The outer surface of the cover plate (16) protrudes in a direction away from the sound outlet (21) to form an arc-shaped surface.

9. The car engine analog speaker according to any one of claims 1 to 8, further comprising a sound insulation member connected to the housing body (10).

10. The automotive engine analog sound loudspeaker according to claim 9, wherein, The sound insulation component is sound insulation cotton, and the end of the outer shell body (10) facing away from the sound outlet (21) is connected to the sound insulation cotton.

11. The automotive engine analog sound loudspeaker according to claim 9, wherein, The sound insulation component is sound insulation cotton, and the outer shell body (10) except for the sound outlet (21) is connected to the sound insulation cotton.

12. The automotive engine analog sound loudspeaker according to claim 9, wherein, The sound insulation component is at least one sound insulation protrusion (26), one end of which is connected to the surface of the outer shell body (10) facing the sound-generating component (30) and away from the sound outlet (21), and the other end of which extends toward the sound-generating component (30).

13. The automotive engine analog sound loudspeaker according to claim 12, wherein, The at least one soundproof protrusion (26) includes a plurality of soundproof protrusions (26), which together form a maze structure.

14. The automotive engine analog sound speaker according to claim 13, wherein, On a plane perpendicular to the extending direction of the at least one sound insulation protrusion (26), the at least one sound insulation protrusion (26) has a T-shaped structure; the plurality of sound insulation protrusions (26) are arranged in an array, with two or more sound insulation protrusions (26) in any row having the same setting direction, and the sound insulation protrusions (26) in adjacent rows having opposite setting directions and being staggered.

15. The automotive engine analog sound speaker according to any one of claims 1 to 14, wherein, The end of the outer shell (10) away from the sound outlet (21) has a double-layer structure, and a vacuum cavity (25) is formed between the double-layer structure.

16. The automotive engine analog speaker according to any one of claims 1 to 15, further comprising a damping member (50) configured to reduce vibration transmission between the automotive engine analog speaker and the underbody protection plate (60).

17. The automotive engine analog sound speaker according to claim 16, wherein, The vibration damper (50) is adapted to be connected between the end of the outer shell body (10) where the sound outlet (21) is located and the underbody panel (60).

18. An automobile, comprising a vehicle body, the vehicle body having a passenger compartment, an underbody panel (60), and an automobile engine analog speaker according to any one of claims 1 to 17, the underbody panel (60) being connected to the automobile engine analog speaker, the outlet (21) of the automobile engine analog speaker being disposed in a direction away from the passenger compartment.

19. The automobile according to claim 18, wherein, The underbody guard plate (60) is provided with a guard plate grille (61); The outer shell (10) of the car engine analog speaker has an end with the sound outlet (21) connected to the underbody panel (60), and the sound outlet (21) of the outer shell (10) is positioned facing the underbody panel grille (61).

20. The automobile according to claim 18 or 19, wherein, The housing body (10) of the car engine analog speaker is connected to the underbody panel (60) at the middle of the left and right sides of the vehicle body.

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