Automobile engine simulation sound loudspeaker and automobile

Abstract

The utility model relates to the technical field of loudspeakers, in particular to an automobile engine simulation sound loudspeaker and an automobile. The automobile engine simulation sound loudspeaker comprises a housing main body and a sound production assembly. The shell main body is connected with a lower guard plate of a vehicle body; the shell main body is provided with a sound outlet facing the outside of the vehicle body; the sound production assembly is arranged in the shell body, and sound produced by the sound production assembly is conducted to the outside of the vehicle body through the sound outlet. The shell main body is connected with a lower guard plate of a vehicle body and is provided with a sound outlet facing the outside of the vehicle body; the sound production assembly is arranged in the shell body, sound produced by the sound production assembly is directly conducted to the outside of the vehicle body through the sound outlet, the sound conduction distance is short, and the sound effect is better. The shell main body is connected with the lower protective plate of the automobile, and the sound outlet of the shell main body is not closed in the automobile, so that the transmission of sound into a driving cabin is reduced, the sound pressure level in the automobile is effectively reduced, and the use satisfaction of a driver and passengers can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a car engine simulation sound loudspeaker and a car. Background Art

[0002] The car engine simulation sound speaker is a sound warning device. When the vehicle speed is less than a preset speed (the preset speed is, for example, 20km / h, 30km / h), the car engine simulation sound speaker emits a sound to remind pedestrians that a vehicle is approaching and to pay attention to safety.

[0003] At present, car engine simulation sound speakers are usually installed on the front bumper of the car. Cars equipped with car engine simulation sound speakers are generally electric cars. The front grille of electric cars is basically closed, and the car engine simulation sound speakers will be wrapped inside the car by the car's front windshield, hood, and lower guard plate. As a result, the sound pressure level energy generated by the car engine simulation sound speakers will be transmitted inside the cabin, which will be clearly felt by the drivers and passengers in the car, affecting their satisfaction with the use. Utility Model Content

[0004] The embodiment of the utility model provides a car engine simulation sound speaker and a car, so as to solve the technical problem in the prior art that the sound pressure level energy generated by the car engine simulation sound speaker is transmitted inside the cabin, which makes the passengers in the car feel it obviously and affects the passengers' satisfaction with the use.

[0005] In the first aspect, an embodiment of the utility model provides a car engine simulation sound speaker, which is used to be installed on a car body, and includes a shell body and a sound-emitting component; the shell body is connected to the underbody guard plate of the car body, and the shell body is provided with a sound outlet facing the outside of the car body; the sound-emitting component is arranged in the shell body, and the sound emitted by the sound-emitting component is transmitted to the outside of the car body through the sound outlet.

[0006] Optionally, the shell body is provided with a sound amplification cavity, and the sound amplification cavity is an outward-expanding cavity structure; the small end of the sound amplification cavity is close to the sound-emitting component; and the large end of the sound amplification cavity is the sound outlet.

[0007] Optionally, the automobile engine simulation sound speaker further comprises a speaker grille, and the speaker grille is arranged at the small end of the sound amplification cavity.

[0008] Optionally, the automobile engine simulation sound speaker further comprises a speaker grille, wherein the speaker grille is a cylindrical structure, the top end of the cylindrical structure is connected to the shell body, and the bottom of the cylindrical structure is provided with a grille structure.

[0009] Optionally, the speaker grille includes at least two layers of grilles; in the axial direction of the speaker grille, the at least two layers of grilles are stacked, and the ribs between two adjacent layers of grilles are staggered.

[0010] Optionally, the end of the shell body having the sound outlet is connected to the underbody guard plate.

[0011] Optionally, a surface of the shell body facing away from the sound outlet is a convex arc-shaped surface.

[0012] Optionally, the shell body includes a main shell and a cover plate, the end of the main shell provided with the sound outlet is connected to the under-vehicle guard plate, the end of the main shell away from the sound outlet is connected to the cover plate, and the sound-emitting component is arranged in the main shell; the outer surface of the cover plate protrudes in the direction away from the sound outlet to form an arc-shaped surface.

[0013] Optionally, the automobile engine simulation sound speaker further includes a sound insulation component, and the sound insulation component is connected to the shell body.

[0014] Optionally, the sound insulation member is sound insulation cotton, and the end of the shell body facing away from the sound outlet is connected to the sound insulation cotton.

[0015] Optionally, the sound insulation component is sound insulation cotton, and all parts of the shell body except the sound outlet are connected to the sound insulation cotton.

[0016] Optionally, the sound insulation member is a sound insulation protrusion, one end of the sound insulation protrusion is connected to a surface of the shell body facing the sound-emitting component and away from the sound outlet, and the other end of the sound insulation protrusion extends toward the sound-emitting component.

[0017] Optionally, there are multiple sound insulation protrusions, and the multiple sound insulation protrusions form a maze structure.

[0018] Optionally, perpendicular to the extension direction of the sound insulation protrusion, the sound insulation protrusion has a T-shaped structure; a plurality of the sound insulation protrusions are arranged in an array, the setting direction of the plurality of the sound insulation protrusions in any row is the same, and the setting directions of the sound insulation protrusions in two adjacent rows are opposite and staggered.

[0019] Optionally, the end of the shell body facing away from the sound outlet is a double-layer structure, and a vacuum cavity is formed between the double-layer structure.

[0020] Optionally, the automobile engine simulation sound speaker further includes a vibration damping member, which is used to reduce vibration transmission between the automobile engine simulation sound speaker and the underbody guard plate.

[0021] Optionally, the vibration damping member is connected between the end of the shell body where the sound outlet is provided and the under-vehicle guard plate.

[0022] In a second aspect, an embodiment of the utility model provides a car, comprising a car body, wherein the car body is provided with a driver's cabin, an undercarriage guard plate and a car engine simulation sound speaker as described above, wherein the undercarriage guard plate is connected to the car engine simulation sound speaker, and a sound outlet of the car engine simulation sound speaker is arranged in a direction away from the driver's cabin.

[0023] Optionally, the under-vehicle guard plate is provided with a guard plate grille; the end of the outer main shell body provided with the sound outlet is connected to the under-vehicle guard plate, and the sound outlet of the outer shell body is arranged facing the guard plate grille.

[0024] Optionally, the shell body of the automobile engine simulation sound speaker is connected to the underbody guard plate in the middle of the left-right direction of the vehicle body.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] In the embodiment of the utility model, the car engine simulation sound speaker, the shell body is connected to the undercarriage guard plate of the car body, and the shell body is provided with a sound outlet facing the outside of the car body; the sound generating component is arranged in the shell body, and the sound emitted by the sound generating component is directly transmitted to the outside of the car body through the sound outlet, the sound transmission distance is short, and the sound effect is better; moreover, no pipeline is required for transmission, and the sound transmission loss can also be reduced. The shell body is connected to the undercarriage guard plate, and the sound outlet of the shell body is not enclosed inside the car, which reduces the transmission of sound to the inside of the driving cabin, effectively reduces the sound pressure level inside the car, and can improve the use satisfaction of the driver and passengers. At the same time, since the sound generating component is not surrounded by the car body and the guard plate, the car engine simulation sound speaker can be operated with a smaller power when meeting the requirements of the regulations, which is equivalent to reducing the relative sound energy transmitted to the inside of the car to a certain extent, thereby reducing the noise fatigue of the people in the driving cabin. Further, the undercarriage guard plate has a higher structural strength and stability, and the shell body can be directly connected to the undercarriage guard plate, which is easier and more convenient to connect with the fender and other components, and the installation environment is relatively good and more stable. The sound outlet of the shell body is located at the bottom guard plate of the car, which is relatively close to the tire and other noisy locations, so as to avoid the generation of mixed sounds and improve the sound effect. Therefore, the car engine simulation sound speaker of the embodiment of the present application has the advantages of high sound transmission efficiency, better sound effect, and simple structure; and reduces the transmission of sound to the interior of the cabin, thereby improving the use satisfaction of the driver and passengers.

[0027] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below.

[0029] Figure 1 A schematic structural diagram of a stereoscopic image of a car engine simulation sound speaker provided by an embodiment of the utility model;

[0030] Figure 2 A schematic structural diagram of a cross-sectional view of a car engine simulation sound speaker provided by an embodiment of the utility model;

[0031] Figure 3 A schematic structural diagram of a stereoscopic view of a speaker grille provided in an embodiment of the utility model;

[0032] Figure 4 A schematic structural diagram of a three-dimensional cross-sectional view of a loudspeaker grille provided by an embodiment of the utility model;

[0033] Figure 5 A schematic structural diagram of a bottom view of a stereoscopic view of a loudspeaker grille provided by an embodiment of the utility model;

[0034] Figure 6 A structural schematic diagram of a partial layout of the sound insulation protrusions provided in an embodiment of the utility model;

[0035] Figure 7 A schematic structural diagram of a portion of a housing body provided in an embodiment of the utility model.

[0036] 10-housing body; 11-main housing; 12-sound amplification cavity; 13-housing connection part; 14-speaker grille; 15-grille structure; 16-cover plate; 17-housing mounting hole; 18-first rib; 19-concave-convex structure; 20-second rib; 21-sound outlet; 22-middle bracket; 23-first cavity; 24-second cavity; 25-vacuum cavity; 26-soundproof protrusion;

[0037] 30-sound generating component; 31-U iron; 32-magnet; 33-washer; 34-voice coil; 35-spring wave; 36-diaphragm; 37-dust cap;

[0038] 50-vibration damping parts;

[0039] 60 - under-vehicle guard plate; 61 - guard plate grille; 62 - limiting protrusion; 63 - connection portion protrusion. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can also be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] The embodiment of the present application discloses a car engine simulation sound speaker, which is installed in a car and connected to the car body, and is used to emit sound to remind pedestrians that a vehicle is approaching and to pay attention to safety.

[0042] Reference Figure 1 and Figure 2 As shown, the automobile engine simulation sound speaker includes a shell body 10 and a sound-generating component 30; the shell body 10 is connected to the underbody guard plate 60 of the vehicle body, and the shell body 10 is provided with a sound outlet 21 facing the outside of the vehicle body; the sound-generating component 30 is arranged in the 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.

[0043] Among them, the undercarriage guard plate 60 is also called a chassis guard plate or an engine guard plate. It is a protective device installed under the chassis of the car, mainly used to protect the engine and other important parts of the car from direct impact and wear due to bad road conditions such as gravel, mud, ice and snow. The undercarriage guard plate 60 can reduce the noise and vibration caused by the impact of the car during driving, and can also prevent the oil pan, gearbox and other parts from being damaged. The undercarriage guard plate also takes into account the heat dissipation needs of the car. Since the engine and other parts generate heat during operation, ventilation space or heat dissipation channels are provided on the undercarriage guard plate so that hot air can be discharged from the engine compartment to prevent overheating.

[0044] The shell body 10 can be specifically connected to the side guard plate, the rear lower guard plate or other positions of the underbody guard plate 60 that do not affect the wind resistance and protection of the entire vehicle, and can connect the sound outlet 21 directly to the position communicating with the air.

[0045] In the embodiment of the present application, the shell body 10 is connected to the undercarriage guard plate 60 of the vehicle body, and the shell body 10 is provided with a sound outlet 21 facing the outside of the vehicle body; the sound generating component 30 is arranged in the shell body 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 pipeline is required for transmission, and the sound transmission loss can also be reduced. The shell body 10 is connected to the undercarriage guard plate 60, and the sound outlet 21 of the shell body 10 is not enclosed in the interior of the car, which reduces the transmission of sound to the interior of the driving cabin, effectively reduces the sound pressure level in the car, and can improve the use satisfaction of the driver and passengers. At the same time, since the sound generating component 30 is not surrounded by the car body and the guard plate, the car engine simulation sound speaker can be operated at a lower power when meeting the requirements of the regulations, which is equivalent to reducing the relative sound energy transmitted to the interior of the car to a certain extent, thereby reducing the noise fatigue of the people in the driving cabin.

[0046] Furthermore, the underbody guard plate 60 has high structural strength and stability, and the outer shell body 10 can be directly connected to the underbody guard plate 60. Compared with the connection with components such as fenders, which requires the use of a conduit, the connection is easier, simpler and more convenient, 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 guard plate 60. Relative to the sound outlet 21 corresponding to the tire and other noisy positions, it can avoid the generation of mixed sounds, reduce the impact of working conditions, and improve the sound effect. Therefore, the automobile engine simulation sound speaker of the embodiment of the present application has the advantages of high sound propagation efficiency, better sound effect, and simple structure; and reduces the transmission of sound to the interior of the cockpit, thereby improving the use satisfaction of the driver and passengers.

[0047] Optional, see Figure 2 As shown, the shell body 10 is provided with a sound amplification cavity 12 , which is an outward-expanding cavity structure; the small end of the sound amplification cavity 12 is close to the sound-emitting component 30 ; the large end of the sound amplification cavity 12 is a sound outlet 21 .

[0048] When the car engine simulation sound speaker is in use, the sound emitted by the sound generating assembly 30 enters the sound amplifying cavity 12 through the small end of the sound amplifying cavity 12, and then passes through the sound amplifying cavity 12 and is transmitted from the large end of the sound amplifying cavity 12. The sound amplifying cavity 12 is an outwardly expanding cavity structure, and the sound amplifying cavity 12 can increase the efficiency of sound propagation forward, so as to spread more sound pressure level energy to the outside of the vehicle body, and at the same time improve the sound pressure level of the mid-high frequency.

[0049] In one embodiment, reference Figure 2 As shown, the sound amplification cavity 12 is in a truncated cone structure, the small end of the truncated cone structure is close to the sound-emitting component 30 , and the large end of the truncated cone structure is the sound outlet 21 .

[0050] In another embodiment, the sound amplification cavity 12 is a conical structure with an arc-shaped cavity wall. The sound amplification cavity 12 can also be a combination of a truncated cone structure and a cylinder. It is understood that the embodiment of the present application does not specifically limit the structure of the sound amplification cavity 12, as long as it can improve the forward propagation of sound energy.

[0051] Optional, see Figure 2 As shown, the car engine simulation sound speaker also includes a speaker grille 14 , which is disposed at the small end of the sound amplification cavity 12 .

[0052] The speaker grille 14 facilitates the export of the sound emitted by the sound generating assembly 30. In the embodiment of the present application, the speaker grille 14 is arranged at the small end of the sound amplification cavity 12. Compared with the speaker grille 14 arranged at the sound outlet 21, the structure size of the speaker grille 14 is smaller, and the structure of the housing body 10 is more compact.

[0053] Optional, see Figure 2 As shown, the automobile engine simulation sound speaker further includes a speaker grille 14, which is a cylindrical structure. The top of the cylindrical structure is connected to the shell body 10, and the bottom of the cylindrical structure is provided with a grille structure 15.

[0054] In the embodiment of the present application, the speaker grille 14 is in a cylindrical structure. After the top of the cylindrical structure is connected to the outer shell body 10, the surrounding areas of the cylindrical connection part and the bottom of the barrel can protect the sound component 30, and the protection effect on the sound component 30 is good.

[0055] Further references Figure 2 As shown, the shell body 10 is provided with a cylindrical connecting portion, one end of which is connected to the cavity wall of the sound expansion cavity 12 at the small end thereof, 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 sound expansion cavity 12.

[0056] Optionally, the speaker grille 14 includes at least two layers of grilles; in the axial direction of the speaker grille 14, at least two layers of grilles are stacked, and the ribs between two adjacent layers of grilles are staggered.

[0057] In the embodiment of the present application, the speaker grille 14 includes at least two layers of grilles, which are stacked and the ribs between two adjacent layers of grilles are staggered with each other. This can effectively prevent rain, mud and impurities from contacting the sound component 30 without affecting the sound, thereby affecting the normal sound of the sound component 30 and effectively protecting the sound component 30.

[0058] In one embodiment, referring to Figures 3 to 5As shown, the grid structure 15 is a double-layer structure, a first layer is provided with a plurality of first ribs 18, and a second layer is provided with a plurality of second ribs 20, and the first ribs 18 and the second ribs 20 are staggered.

[0059] The spacing L1 between two adjacent first ribs 18 and the spacing L2 between two adjacent second ribs 20 and the spacing L3 between two adjacent second ribs 20 and the spacing L4 between two adjacent first ribs 18 and the spacing L5 between two adjacent second ribs 20 and the spacing L6 between two adjacent second ribs 20 can be set according to the use requirements. Figure 4 As shown, the distance L1 between two adjacent first ribs 18 and the first rib 18 is 2 mm. In the axial direction of the speaker grille 14, the distance between the first rib 18 and the second rib 20 is also set according to the use requirements, for example, referring to Figure 4 As shown, the distance L2 between the first rib 18 and the second rib 20 is 2 mm.

[0060] Reference Figures 3 to 5 As shown, in order to increase the structural strength of the speaker grille 14 , a concave-convex structure 19 is provided on the outer peripheral side wall of the speaker grille 14 .

[0061] Optionally, the end of the shell body 10 provided with the sound outlet 21 is connected to the undercarriage guard plate 60. In this case, the shell body 10 does not protrude from the undercarriage guard plate 60, and the undercarriage guard plate 60 can effectively protect the automobile engine simulation sound speaker.

[0062] Optionally, the surface of the shell body 10 facing away from the sound outlet 21 is a convex arc-shaped surface, which can effectively reduce the accumulation of rainwater, enhance the strength of the entire shell body 10, and reduce the risk of shell vibration at low frequencies.

[0063] Optional, see Figure 1 and Figure 2 As shown, the shell body 10 includes a main shell 11 and a cover plate 16. The end of the main shell 11 having a sound outlet 21 is connected to the under-vehicle guard plate 60, and the end of the main shell 11 away from the sound outlet 21 is connected to the cover plate 16. A sound-emitting component 30 is provided in 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.

[0064] In the embodiment of the present application, the housing body 10 is a split structure, and the housing body 10 includes a main shell 11 and a cover plate 16, which is convenient for processing and manufacturing. The outer surface of the cover plate 16 bulges away from the sound outlet 21 to form an arc surface, which can effectively reduce the accumulation of rainwater, strengthen the strength of the entire cover plate 16, and reduce the risk of shell vibration at low frequencies.

[0065] Optionally, the automobile engine simulation sound speaker further includes a sound insulation component, which is connected to the housing body 10 .

[0066] In the embodiment of the present application, the sound insulation component can reduce the sound, thereby reducing the transmission of sound into the interior of the cabin, effectively reducing the sound pressure level in the car, and improving the user satisfaction of the driver and passengers.

[0067] Optionally, the sound insulation component is sound insulation cotton, and the end of the shell body 10 facing away from the sound outlet 21 is connected to the sound insulation cotton, which can reduce the transmission of the sound emitted by the sound-emitting component 30 to the interior of the cabin, thereby reducing the sound pressure level in the car.

[0068] Optionally, the sound insulation member is sound insulation cotton, and all parts of the shell body 10 except the sound outlet 21 are connected to the sound insulation cotton.

[0069] When the automobile engine simulation sound speaker of the embodiment of the present application is in use, all parts of the shell body 10 except the sound outlet 21 are connected to the sound insulation cotton. It can reduce the sound of the shell body 10 except the sound outlet 21 without affecting the sound emitted by the sound-emitting component 30 being transmitted to the outside of the vehicle body through the sound outlet 21, thereby reducing the transmission of sound to the inside of the cockpit.

[0070] Optionally, the sound insulation member is a sound insulation protrusion 26 , one end of the sound insulation protrusion 26 is connected to a surface of the housing body 10 facing the sound emitting component 30 and away from the sound outlet 21 , and the other end of the sound insulation protrusion 26 extends toward the sound emitting component 30 .

[0071] In the embodiment of the present application, the sound insulation protrusion 26 can extend the depth of sound propagation, so that the sound is absorbed by the sound insulation protrusion 26 during the propagation process, or loss occurs during the refraction process, thereby reducing the sound pressure level of the sound propagating toward the interior of the cockpit and reducing the noise inside the cockpit.

[0072] Optionally, there are multiple sound insulation protrusions 26, and the multiple sound insulation protrusions 26 form a maze structure.

[0073] In the above-mentioned structure of the embodiment of the present application, the sound propagating toward the interior of the cabin will come into contact with the maze structure, and the energy of the sound wave will be absorbed by the maze structure or lost in refraction, thereby reducing the sound pressure level of the sound propagating into the cabin and reducing the noise inside the car.

[0074] Optional, see Figure 6 As shown, perpendicular to the extension direction of the sound insulation protrusion 26, the sound insulation protrusion 26 is in a T-shaped structure; a plurality of sound insulation protrusions 26 are arranged in an array, and the arrangement direction of a plurality of sound insulation protrusions 26 in any row is the same, and the arrangement directions of the sound insulation protrusions 26 in two adjacent rows are opposite and staggered.

[0075] Optional, see Figure 7As shown, the end of the shell body 10 facing away from the sound outlet 21 is a double-layer structure, and a vacuum cavity 25 is formed between the double-layer structures. The double-layer structure and the vacuum cavity 25 formed between the double-layer structures can also reduce the sound pressure level of the sound propagating into the interior of the cockpit.

[0076] Optionally, the automobile engine simulation sound speaker further includes a vibration damping member 50, which is used to reduce the vibration transmission between the automobile engine simulation sound speaker and the underbody guard plate 60, thereby reducing the influence of the vibration on the automobile engine simulation sound speaker.

[0077] Optional, see Figure 1 and Figure 2 As shown, the vibration damping member 50 is connected between the end of the housing body 10 provided with the sound outlet 21 and the under-vehicle guard plate 60. In the above structure of the embodiment of the present application, the vibration of the under-vehicle guard plate 60 is transmitted to the car engine simulation sound speaker through the vibration damping member 50. The vibration damping member 50 has a vibration damping effect, which can reduce the vibration transmission to the car engine simulation sound speaker, thereby reducing the influence of the vibration of the under-vehicle guard plate 60 on the car engine simulation sound speaker.

[0078] Optionally, the vibration damping member 50 is a cushioning foam, which is a material that protects objects from impact and vibration. The cushioning foam is usually made of polyethylene foam PE Foam, polyurethane foam PU Foam, expanded polypropylene EPP, expanded polystyrene EPS and other materials. The cushioning foam has good elasticity and compressibility, and can absorb and disperse external impact force, thereby preventing the car engine simulation sound speaker from being damaged.

[0079] Optional, see Figures 1 to 5 As shown, the automobile engine simulation sound speaker includes a housing body 10 and a sound generating component 30 .

[0080] The housing body 10 includes a main housing 11 and a cover plate 16. The main housing 11 is provided with a middle bracket 22, which divides the main housing 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 in sequence, and the large end of the sound amplification cavity 12 is a sound outlet 21. One end of the main housing 11 is provided with a sound outlet 21, and the other end of the main housing 11 is connected to the cover plate 16.

[0081] The sound generating assembly 30 includes a U iron 31 , a magnet 32 ​​, a washer 33 , a voice coil 34 , a spring 35 , a diaphragm 36 and a dust cap 37 .

[0082] The U-iron 31 is connected to the middle of the middle bracket 22, and the U-iron 31 is located in the first cavity. A magnet 32 ​​and a washer 33 are arranged in the U-iron 31, and the U-iron 31 is connected to the diaphragm 36 through the voice coil 34. The inner circle end of the elastic wave 35 is connected to the voice coil 34, and the outer circle end of the elastic wave 35 is connected to the middle bracket. The dust cap 37 is arranged corresponding to the voice coil 34, and the outer circle end of the dust cap 37 is connected to the diaphragm 36. The voice coil 34, the elastic wave 35, the diaphragm 36, and the dust cap 37 are all arranged in the second cavity. When the sound-generating component 30 is in use, the voice coil 34 and the diaphragm 36 move to generate sound.

[0083] The speaker grille 14 is disposed in the sound amplification cavity 12. The cavity enclosed by the speaker grille 14 is used to avoid the voice coil 34, the diaphragm 36 and the dust cap 37, provide space for the movement of the voice coil 34, the diaphragm 36 and the dust cap 37, and make the structure more compact.

[0084] Furthermore, a shell connecting portion 13 is provided on the outer periphery of the main shell 11, and the shell connecting portion 13 extends from the main shell 11 in a direction away from the main shell 11. The shell connecting portion 13 is connected to the undercarriage guard plate 60 to achieve connection between the shell connecting portion 13 and the undercarriage guard plate 60.

[0085] The shell connection part 13 and the under-vehicle guard plate 60 can be connected in an appropriate manner. For example, the shell connection part 13 and the under-vehicle guard plate 60 are connected using fasteners such as bolts, which has the advantage of simple and convenient connection and disassembly. In this case, a shell mounting hole 17 can be set on the shell connection part 13.

[0086] Among them, the U iron 31, magnet 32, washer 33, voice coil 34, elastic wave 35, diaphragm 36, dust cap 37, main shell 11, cover plate 16, speaker grille 14, and buffer foam in the car engine simulation sound speaker can be connected using a connection method that meets the use requirements. For example, the U iron 31, magnet 32, washer 33, voice coil 34, elastic wave 35, diaphragm 36, dust cap 37, main shell 11, cover plate 16, and speaker grille 14 are bonded together by gluing. The main shell 11 is bonded to the buffer foam by double-sided tape.

[0087] In the embodiment of the present application, the shell body 10 is connected to the undercarriage guard plate 60 of the vehicle body, and the shell body 10 is provided with a sound outlet 21 facing the outside of the vehicle body; the sound generating component 30 is arranged in the shell body 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 pipeline is required for transmission, and the sound transmission loss can also be reduced. The shell body 10 is connected to the undercarriage guard plate 60, and the sound outlet 21 of the shell body 10 is not enclosed inside the car, which reduces the transmission of sound to the inside of the driving cabin, effectively reduces the sound pressure level inside the car, and can improve the use satisfaction of the driver and passengers. The undercarriage guard plate 60 has high structural strength and stability. The shell body 10 can be directly connected to the undercarriage guard plate 60, which requires the use of a conduit when connecting with components such as fenders. The connection is easier, simpler and more convenient, and the installation environment is relatively good and more stable. The sound outlet 21 of the shell body 10 is located at the underbody guard plate 60, which is relative to the sound outlet 21 corresponding to the tire and other noisy positions, which can avoid the generation of sound mixing and improve the sound effect. Therefore, the automobile engine simulation sound speaker of the embodiment of the present application has the advantages of high sound propagation efficiency, better sound effect, and simple structure; and reduces the transmission of sound to the interior of the cockpit, thereby improving the use satisfaction of the driver and passengers. When the sound pressure level outside the car is 58dB, the sound pressure level inside the car driven by the wind noise and pink noise sound source is 36dB and 33dB respectively, the improvement effect is obvious, and the driver and passengers in the car can hardly feel the noise.

[0088] An embodiment of the present application also discloses a car, which includes a body, the body is provided with a driver's cabin, an undercarriage guard plate 60 and a car engine simulation sound speaker as described above, the undercarriage guard plate 60 is connected to the car engine simulation sound speaker, and the sound outlet 21 of the car engine simulation sound speaker is arranged in a direction away from the driver's cabin.

[0089] The undercarriage guard plate 60 is connected to the car engine simulation sound speaker, and the undercarriage guard plate 60 will not enclose the car engine simulation sound speaker inside the car, which can reduce the transmission of sound to the inside of the cabin and effectively reduce the sound pressure level inside the car. At the same time, since the sound of the car engine simulation sound speaker is not surrounded by the car body and the guard plate, the car engine simulation sound speaker can be operated at a lower power when meeting the requirements of the regulations, which is equivalent to reducing the relative sound energy transmitted to the inside of the car to a certain extent, thereby reducing the noise fatigue of the people in the cabin. The sound outlet 21 of the car engine simulation sound speaker is located at the undercarriage guard plate 60, and the sound outlet 21 is set in the direction away from the cabin. Relative to the position with noise such as the tire corresponding to the sound outlet 21, it can avoid the generation of sound mixing and also improve the sound effect. Therefore, the car of the embodiment of the present application connects the undercarriage guard plate 60 with the car engine simulation sound speaker, which can improve the sound effect, reduce the sound pressure level in the cabin, and improve the use satisfaction of the driver and passengers.

[0090] The car engine simulation sound speaker is connected to the surface of the undercarriage guard plate 60 facing the vehicle body. The car engine simulation sound speaker can be specifically connected to the side guard plate, rear undercarriage guard plate or other positions of the undercarriage guard plate 60 that do not affect the wind resistance and protection of the entire vehicle, and the sound outlet 21 of the car engine simulation sound speaker can be directly connected to a position connected to the air.

[0091] Optionally, the under-vehicle guard plate 60 is provided with a guard plate grille 61 ; the end of the main shell 11 having a sound outlet 21 is connected to the under-vehicle guard plate 60 , and the sound outlet 21 of the shell body 10 is arranged facing the guard plate grille 61 .

[0092] In the embodiment of the present application, the guard grille 61 is used to export the sound emitted by the car engine simulation sound speaker. The guard grille 61 effectively prevents rain, mud and impurities from contacting the car engine simulation sound speaker without affecting the sound, thereby increasing the service life of the car engine simulation sound speaker.

[0093] Optionally, the shell body 10 is connected to the underbody guard plate 60 in the middle of the left and right directions of the vehicle body, so that the car engine simulation sound speaker can be evenly propagated to the left and right sides of the car, which has a better warning effect on pedestrians.

[0094] Optional, see Figure 1 and Figure 2 As shown, the surface of the undercarriage guard plate 60 is provided with a limiting protrusion 62, and the cavity enclosed by the limiting protrusion 62 is used to limit the contact with the simulated sound speaker of the automobile engine. The surface of the undercarriage guard plate 60 is also provided with a connecting portion protrusion 63, and the connecting portion protrusion 63 is connected to the shell connecting portion 13, and the connecting portion protrusion 63 can facilitate the connection and enhance the strength of the connection.

[0095] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0096] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A car engine simulation sound speaker, used for installation on a car body, characterized in that: It comprises a housing body (10) and a sound-generating component (30); The shell body (10) is connected to the underbody guard plate (60) of the vehicle body, and the shell body (10) is provided with a sound outlet (21) facing the outside of the vehicle body; The sound-generating component (30) is disposed in the outer shell body (10), and the sound generated by the sound-generating component (30) is transmitted to the outside of the vehicle body through the sound outlet (21).

2. The automobile engine simulation sound speaker according to claim 1, characterized in that: The housing body (10) is provided with a sound amplification cavity (12), and the sound amplification cavity (12) is an outward-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).

3. The automobile engine simulation sound speaker according to claim 2, characterized in that: The automobile engine simulation sound speaker further comprises a speaker grille (14), wherein the speaker grille (14) is arranged at the small end of the sound amplification cavity (12).

4. The automobile engine simulation sound speaker according to claim 1, characterized in that: The automobile engine simulation sound speaker also includes a speaker grille (14), wherein the speaker grille (14) is a cylindrical structure, the top of the cylindrical structure is connected to the shell body (10), and the bottom of the cylindrical structure is provided with a grille structure (15).

5. The automobile engine simulation sound speaker according to claim 4, characterized in that: The loudspeaker grille (14) comprises 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 two adjacent layers of grilles are staggered.

6. The automobile engine simulation sound speaker according to claim 1, characterized in that: The end of the shell body (10) provided with the sound outlet (21) is connected to the under-vehicle guard plate (60).

7. The automobile engine simulation sound speaker according to claim 6, characterized in that: The surface of the housing body (10) facing away from the sound outlet (21) is a convex arc-shaped surface.

8. The automobile engine simulation sound speaker according to claim 6, characterized in that: The housing body (10) comprises a main shell (11) and a cover plate (16); the end of the main shell (11) provided with the sound outlet (21) is connected to the under-vehicle guard plate (60); the end of the main shell (11) away from the sound outlet (21) is connected to the cover plate (16); the main shell (11) is provided with the sound generating assembly (30); 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 automobile engine simulation sound speaker according to claim 1, characterized in that: The automobile engine simulation sound speaker further comprises a sound insulation member, and the sound insulation member is connected to the housing body (10).

10. The automobile engine simulation sound speaker according to claim 9, characterized in that: The sound insulation component is sound insulation cotton, and the end of the shell body (10) facing away from the sound outlet (21) is connected to the sound insulation cotton.

11. The automobile engine simulation sound speaker according to claim 9, characterized in that: The sound insulation component is sound insulation cotton, and all parts of the shell body (10) except the sound outlet (21) are connected to the sound insulation cotton.

12. The automobile engine simulation sound speaker according to claim 9, characterized in that: The sound insulation member is a sound insulation protrusion (26), one end of which is connected to a surface of the housing 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 automobile engine simulation sound speaker according to claim 12, characterized in that: The sound insulation protrusions (26) are multiple, and the multiple sound insulation protrusions (26) form a maze structure.

14. The automobile engine simulation sound speaker according to claim 13, characterized in that: Perpendicular to the extension direction of the sound insulation protrusion (26), the sound insulation protrusion (26) is in a T-shaped structure; a plurality of the sound insulation protrusions (26) are arranged in an array, a plurality of the sound insulation protrusions (26) in any row are arranged in the same direction, and the sound insulation protrusions (26) in two adjacent rows are arranged in opposite directions and are staggered.

15. The automobile engine simulation sound speaker according to claim 1, characterized in that: The end of the housing body (10) facing away from the sound outlet (21) is a double-layer structure, and a vacuum cavity (25) is formed between the double-layer structures.

16. The automobile engine simulation sound speaker according to claim 1, characterized in that: The automobile engine simulation sound speaker further comprises a vibration damping member (50), wherein the vibration damping member (50) is used to reduce the vibration transmission between the automobile engine simulation sound speaker and the under-vehicle guard plate (60).

17. The automobile engine simulation sound speaker according to claim 16, characterized in that: The vibration damping member (50) is connected between the end of the housing body (10) provided with the sound outlet (21) and the under-vehicle guard plate (60).

18. A car, characterized in that: The automobile comprises a body, the body being provided with a driver's cabin, an undercarriage guard plate (60) and a car engine simulation sound speaker as described in any one of claims 1 to 17, the undercarriage guard plate (60) being connected to the car engine simulation sound speaker, and a sound outlet (21) of the car engine simulation sound speaker being arranged in a direction away from the driver's cabin.

19. The automobile according to claim 18, characterized in that The undercarriage guard plate (60) is provided with a guard plate grille (61); The end of the shell body (10) of the automobile engine simulation sound speaker provided with the sound outlet (21) is connected to the undercarriage guard plate (60), and the sound outlet (21) of the shell body (10) is arranged facing the guard plate grille (61).

20. The automobile according to claim 18, characterized in that The housing body (10) of the automobile engine simulation sound speaker is connected to the underbody guard plate (60) at the middle part of the left-right direction of the vehicle body.

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