Sound production device and vehicle

Abstract

The utility model discloses a sound production device and vehicle relates to electric sound transduction technical field, this sound production device is applied to vehicle, sound production device includes sound barrier board, support spare and loudspeaker, sound barrier board is equipped with air hole, be equipped with the cavity in support spare, support spare has the top and bottom that are connected, bottom with sound barrier board is connected to make the cavity with air hole intercommunication, loudspeaker is located in the cavity, and with top is connected. The utility model aims at canceling the traditional box structure, reduces the space of sound production device occupation vehicle inside, expands the low frequency lower limit of sound production device simultaneously, promotes the acoustics performance and low frequency of sound production device and dives ability.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic transduction technology, and in particular to a sound-generating device and a vehicle using the sound-generating device. Background Technology

[0002] In recent years, with the rapid development of the automotive industry, sound-generating devices, as important electroacoustic transducers in automotive products, have been widely used.

[0003] In related technologies, in-vehicle subwoofer systems are typically either closed-box or open-box systems. To achieve good low-frequency performance, the enclosure volume usually needs to be designed to be large, allowing for a larger rear cavity to accommodate the speaker. However, in the limited interior space of a vehicle, an excessively large enclosure can take up valuable space. Utility Model Content

[0004] The main purpose of this utility model is to provide a sound-generating device and a vehicle, which aims to eliminate the traditional box structure, reduce the space occupied by the sound-generating device inside the vehicle, and at the same time expand the low-frequency lower limit of the sound-generating device, thereby improving the acoustic performance and low-frequency extension capability of the sound-generating device.

[0005] To achieve the above objectives, this utility model proposes a sound-generating device for use in a vehicle, the sound-generating device comprising:

[0006] A sound baffle, wherein the sound baffle is provided with ventilation holes;

[0007] A support member, wherein the support member has a cavity, and the support member has a connected top end and a bottom end, the bottom end being connected to the sound baffle so that the cavity communicates with the vent.

[0008] A loudspeaker, which is disposed within the cavity and connected to the top.

[0009] In one embodiment, the bottom end is provided with a fixing part, the fixing part extends along the surface of the sound baffle and is connected to the sound baffle, and a sealing structure is provided between the fixing part and the sound baffle so that the fixing part is sealed to the sound baffle through the sealing structure;

[0010] Wherein, the fixing part is formed by bending the bottom end toward the side opposite to the cavity; or, the support member and the fixing part are integrally injection molded;

[0011] And / or, the fixing part is locked and connected to the sound baffle by screws.

[0012] In one embodiment, the sealing structure includes a convex rib structure and a concave rib structure, one of which is disposed in the fixing part and the other is disposed in the sound baffle. When the fixing part is connected to the sound baffle, the convex rib structure is accommodated and confined within the concave rib structure.

[0013] In one embodiment, the sealing structure further includes a waterproof sealing ring, which is sandwiched between the fixing part and the sound baffle and is located between the convex rib structure and the concave rib structure;

[0014] The waterproof sealing ring is made of a waterproof soft material;

[0015] And / or, the waterproof sealing ring is arranged around the vent hole;

[0016] And / or, the convex rib structure is provided on the fixing part, the convex rib structure is formed by protruding from the side of the fixing part facing the sound baffle towards the sound baffle, and the concave rib structure is provided on the sound baffle, the concave rib structure is formed by recessing from the side of the sound baffle facing the fixing part towards the direction away from the fixing part.

[0017] In one embodiment, the opening area of ​​the vent is greater than or equal to the effective vibration area of ​​the speaker's vibration system;

[0018] And / or, the vent holes include multiple vent holes, which are spaced apart and all communicate with the cavity;

[0019] And / or, the angle between the central axis of the loudspeaker and the central axis of the vent is in the range of 0° to 90°.

[0020] In one embodiment, the minimum distance between the side of the loudspeaker facing the sound baffle and the sound baffle is greater than 15 mm;

[0021] And / or, the sound-generating device further includes a mesh cover connected to the sound baffle and covering the vent.

[0022] In one embodiment, the speaker includes:

[0023] A basin stand having a first end connected to the top and a second end extending toward the cavity, such that a mounting cavity communicating with the cavity is formed inside the basin stand;

[0024] A vibration system, wherein the outer periphery of the vibration system is connected to the first end; and

[0025] A magnetic circuit system, which is connected to the second end and is disposed opposite to the side of the vibration system facing the mounting cavity.

[0026] In one embodiment, the vibration system includes a diaphragm and a voice coil connected to the diaphragm. The outer periphery of the diaphragm is connected to the first end. The magnetic circuit system includes a U-shaped iron and a central magnet. The U-shaped iron is connected to the second end. The U-shaped iron has a receiving groove communicating with the mounting cavity. The central magnet is disposed in the receiving groove and spaced from the sidewall of the receiving groove to form a magnetic gap. The end of the voice coil away from the diaphragm is inserted into the magnetic gap. The U-shaped iron and the frame are integrally injection molded.

[0027] And / or, the basin frame and the support member are integrally formed; or, the basin frame and the support member are welded or bonded together.

[0028] In one embodiment, the sound-generating device further includes a reflector cone connected to the top end and located on the side of the loudspeaker facing away from the sound baffle, with the reflector cone and the support forming a sound outlet;

[0029] The minimum distance from the side of the reflector cone facing the speaker to the speaker is 2 to 5 times the maximum linear displacement of the speaker's vibration system.

[0030] In one embodiment, the reflector cone includes a reflector plate and a support column, one end of the support column being connected to the reflector plate and the other end of the support column being connected to the top end, so that the reflector plate is opposite to and spaced apart from the speaker;

[0031] The reflector has a groove on the side facing the speaker, the groove is located in the center of the reflector, and extends from the periphery of the reflector to the groove. The side of the reflector facing the speaker is inclined toward the direction of the speaker.

[0032] And / or, a protruding post is formed in the center of the side of the reflector facing away from the speaker, and a plurality of partitions are also provided on the side of the reflector facing away from the speaker; wherein, the plurality of partitions are spaced apart; and / or, one end of each of the plurality of partitions is connected to the protruding post, and the other end of each of the plurality of partitions extends toward the periphery of the reflector, so that the plurality of partitions are arranged radially with the protruding post as the center.

[0033] And / or, the support columns include a plurality of columns, which are spaced apart and arranged around the speaker, and the two ends of the plurality of support columns are respectively connected to the reflector and the support member.

[0034] This utility model also proposes a vehicle that includes the aforementioned sound-generating device.

[0035] The sound-generating device of this utility model is applied to a vehicle. By using a sound baffle to separate the internal and external spaces, and mounting the speaker on the sound baffle via a support, both the support and the speaker are located in the internal space. This allows the speaker to emit sound into the internal space, and the cavity of the support is connected to the external space through the vent holes of the sound baffle. In this way, the support can replace the traditional box structure, reducing the space occupied by the sound-generating device inside the vehicle. At the same time, the support can be used to install the speaker and connect it to the external space through the vent holes of the sound baffle, effectively expanding the volume of the speaker's rear cavity. This expands the rear cavity into the external space, effectively extending the low-frequency lower limit of the sound-generating device and improving its acoustic performance and low-frequency extension capability. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 A schematic diagram of the structure of an embodiment of the sound-generating device provided by this utility model;

[0038] Figure 2 A top view of an embodiment of the sound-generating device provided by this utility model;

[0039] Figure 3 A bottom view of an embodiment of the sound-generating device provided by this utility model;

[0040] Figure 4 A cross-sectional schematic diagram of an embodiment of the sound-generating device provided by this utility model;

[0041] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0042] Figure 6 A partially enlarged cross-sectional schematic diagram of an embodiment of the sound-generating device provided by this utility model;

[0043] Figure 7 A cross-sectional schematic diagram of another embodiment of the sound-generating device provided by this utility model;

[0044] Figure 8 A schematic diagram of the structure in which the support member and the basin frame are integrally set in one embodiment of the sound-generating device provided by this utility model;

[0045] Figure 9A cross-sectional schematic diagram of a sound-generating device provided by this utility model, in which the support member and the basin frame are integrally set;

[0046] Figure 10 for Figure 9 Enlarged view of point B in the middle;

[0047] Figure 11 A cross-sectional schematic diagram of another embodiment of the sound-generating device provided by this utility model, in which the support member and the basin frame are integrally set;

[0048] Figure 12 A cross-sectional schematic diagram of an embodiment of the loudspeaker provided by this utility model;

[0049] Figure 13 This is a cross-sectional schematic diagram of an embodiment of the reflective cone provided by this utility model.

[0050] Explanation of icon numbers:

[0051] 100. Sound-generating device; 1. Sound baffle; 11. Vent hole; 2. Support component; 21. Cavity; 22. Fixing part; 3. Loudspeaker; 31. Basket; 311. First end; 312. Second end; 313. Mounting cavity; 32. Vibration system; 321. Diaphragm; 322. Voice coil; 33. Magnetic circuit system; 331. U-shaped iron; 3311. Receiving groove; 332. Central magnet; 333. Magnetic gap; 4. Sealing structure; 41. Raised rib structure; 42. Concave rib structure; 43. Waterproof sealing ring; 5. Reflector cone; 51. Sound outlet; 52. Reflector plate; 521. Groove; 522. Raised column; 523. Partition plate; 53. Support column.

[0052] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0056] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0057] In recent years, with the rapid development of the automotive industry, automotive products have ushered in a new wave of innovation. Sound-generating devices, as important electroacoustic transducers in automotive products, are widely used in loudspeakers and other similar applications.

[0058] In related technologies, in-vehicle subwoofer systems are typically either closed-box or open-box systems. To achieve good low-frequency performance, the enclosure volume usually needs to be designed to be large, allowing for a larger rear cavity to accommodate the speaker. However, in the limited interior space of a vehicle, an excessively large enclosure can take up valuable space.

[0059] Based on the above-mentioned concepts and problems, this utility model proposes a sound-generating device 100, which is applied in a vehicle. In this embodiment, the sound-generating device 100 uses a support member 2 to directly mount a speaker 3 onto a sound baffle 1, enabling the speaker 3 of the sound-generating device 100 to emit sound into the interior of the vehicle. At the same time, the cavity 21 of the support member 2 where the speaker 3 is mounted is connected to the external space through the vent hole 11 of the sound baffle 1, thereby effectively expanding the rear cavity volume of the speaker 3, extending the rear cavity into the external space, effectively extending the low-frequency lower limit of the sound-generating device 100, and improving the acoustic performance and low-frequency extension capability of the sound-generating device 100.

[0060] Please refer to the reference. Figures 1 to 13 As shown in the present invention, the sound-generating device 100 includes a sound baffle 1, a support member 2, and a speaker 3. The sound baffle 1 is provided with a vent hole 11, and the support member 2 is provided with a cavity 21. The support member 2 has a top end and a bottom end connected to each other. The bottom end is connected to the sound baffle 1 so that the cavity 21 communicates with the vent hole 11. The speaker 3 is disposed in the cavity 21 and is connected to the top end.

[0061] In this embodiment, the sound-generating device 100 has a sound baffle 1 that separates the interior space from the exterior space. It is understood that the interior space can be the vehicle interior space where the driver and passengers reside. The sound baffle 1 is the perimeter encompassing the vehicle interior space, such as the floor, roof, trunk door panel, storage rack sheet metal, wheel hub sheet metal, etc., and is not limited thereto.

[0062] Understandably, the speaker 3 of the sound-generating device 100 is connected to the sound baffle 1 via the support member 2. Optionally, the speaker 3 and the support member 2 are located on the side of the sound baffle 1 facing the interior space, that is, the speaker 3 radiates sound into the interior space. In this embodiment, the support member 2 has a connected top and bottom end, forming a cavity 21 within the support member 2. The bottom end of the support member 2 is connected to the sound baffle 1, so that the cavity 21 communicates with the vent 11. The speaker 3 is disposed within the cavity 21 of the support member 2 and connected to the top end.

[0063] In this embodiment, the vent 11 of the sound baffle 1 is enclosed within the closed area formed by the support 2 and the speaker 3. It is understood that the speaker 3 has a sound radiating surface and a back surface facing away from the sound radiating surface. The sound radiating surface of the speaker 3 faces the interior space, such as the vehicle cabin (i.e., the interior space where the driver and passengers reside), and the back surface of the speaker 3 faces the vent 11 of the sound baffle 1, leading to the exterior space of the vehicle, such as the undercarriage, trunk, wheel wells, etc., without limitation.

[0064] Understandably, the support member 2 is used to install, fix, and protect structures such as the speaker 3; that is, the support member 2 provides a mounting base for structures such as the speaker 3. Optionally, the support member 2 has a cylindrical structure with openings at both ends. It should be noted that the speaker 3 can be a miniature speaker or a speaker unit. The speaker 3 includes a vibration system 32 and a magnetic circuit system 33 arranged opposite to each other. The side of the vibration system 32 facing away from the magnetic circuit system 33 forms the sound radiation surface of the speaker 3, and the side of the magnetic circuit system 33 facing away from the vibration system 32 forms the back surface of the speaker 3. In this embodiment, a sound outlet is formed at the top of the support member 2 to facilitate the outward radiation of sound by the speaker 3; this is not limited here.

[0065] Optionally, the external shape of the speaker 3 can be circular or square, etc., and is not limited here. In order to install and fix the vibration system 32 and magnetic circuit system 33 of the speaker 3, the speaker 3 also includes a housing or frame 31 and other structures. The vibration system 32 and magnetic circuit system 33 are installed in the housing or frame 31 and other structures, thereby integrating the speaker 3 into a whole structure, which is not limited here.

[0066] The sound-generating device 100 of this utility model is applied to a vehicle. By using a sound baffle 1 to separate the internal space and the external space, and mounting the speaker 3 on the sound baffle 1 through a support member 2, both the support member 2 and the speaker 3 are located in the internal space. This allows the speaker 3 to emit sound into the internal space. The cavity 21 of the support member 2 is connected to the external space through the vent hole 11 of the sound baffle 1. In this way, the support member 2 can replace the traditional box structure, reducing the space occupied by the sound-generating device 100 in the vehicle's interior. At the same time, the support member 2 can be used to install the speaker 3 and connect to the external space through the vent hole 11 of the sound baffle 1, effectively expanding the volume of the rear cavity of the speaker 3, extending the rear cavity into the external space, effectively extending the low-frequency lower limit of the sound-generating device 100, and improving the acoustic performance and low-frequency extension capability of the sound-generating device 100.

[0067] Understandably, the sound-generating device 100 of this utility model eliminates the traditional enclosure structure. Without the constraints of internal volume and air stiffness, the low-frequency attenuation frequency (f3) of the sound-generating device 100 decreases by ≥20%. Simultaneously, the space occupied by the sound-generating device 100 is reduced by 80% compared to the volume of a traditional enclosure, allowing the thickness of the sound-generating device 100 to be only the height or thickness of the support member 2 for installing the speaker 3. Furthermore, it facilitates the concealed installation of the sound-generating device 100 within sheet metal layers, such as floors, shelves, fenders, and roofs, enabling greater flexibility in its layout.

[0068] In one embodiment, a fixing part 22 is provided at the bottom end. The fixing part 22 extends along the surface of the sound baffle 1 and is connected to the sound baffle 1. A sealing structure 4 is provided between the fixing part 22 and the sound baffle 1 so that the fixing part 22 is sealed to the sound baffle 1 through the sealing structure 4.

[0069] In this embodiment, as Figure 1 , Figure 2 , Figures 4 to 11 As shown, by providing a fixing part 22 extending along the surface of the sound baffle 1 at the bottom end of the support member 2, the connection area between the support member 2 and the sound baffle 1 can be increased by using the fixing part 22, thereby improving stability and sealing.

[0070] To further improve the sealing performance between the support member 2 and the sound baffle 1, a sealing structure 4 is provided between the fixing part 22 and the sound baffle 1, thus ensuring a sealed connection between the fixing part 22 and the sound baffle 1 through the sealing structure 4. This arrangement ensures that the airflow within the cavity 21 of the support member 2 leaks into the internal space through the space between the support member 2 and the sound baffle 1, preventing interference with the sound waves radiated by the sound radiating surface of the speaker 3 and resulting in an acoustic short circuit.

[0071] Understandably, the support member 2 can be connected and fixed to the sound baffle 1 by means of screw connection, pin connection, snap-fit ​​connection, etc. In this embodiment, the fixing part 22 of the support member 2 and the sound baffle 1 can optionally be connected by screws. The support member 2 can be a metal part or an injection molded part. When the support member 2 is a metal part, the fixing part 22 is formed by bending from the bottom end toward the side away from the cavity 21. When the support member 2 is an injection molded part, the support member 2 and the fixing part 22 are integrally injection molded, which is not limited here.

[0072] In one embodiment, the sealing structure 4 includes a convex rib structure 41 and a concave rib structure 42. One of the convex rib structure 41 and the concave rib structure 42 is provided in the fixing part 22, and the other is provided in the sound baffle 1. When the fixing part 22 is connected to the sound baffle 1, the convex rib structure 41 is accommodated and confined within the concave rib structure 42.

[0073] In this embodiment, as Figures 4 to 7 , Figure 9 and Figure 10 As shown, by configuring the sealing structure 4 as a convex rib structure 41 and a concave rib structure 42, with one of the convex rib structure 41 and the concave rib structure 42 located in the fixing part 22 and the other in the sound baffle 1, when the fixing part 22 of the support member 2 is connected to the sound baffle 1, the convex rib structure 41 is accommodated and confined within the concave rib structure 42. Thus, the cooperation of the convex rib structure 41 and the concave rib structure 42 further improves the sealing effect.

[0074] Optionally, the convex rib structure 41 is provided on the fixing part 22, and the convex rib structure 41 is formed by protruding towards the sound baffle 1 from the side of the fixing part 22 facing the sound baffle 1, and the concave rib structure 42 is provided on the sound baffle 1, and the concave rib structure 42 is formed by recessing away from the side of the sound baffle 1 facing the fixing part 22.

[0075] In this embodiment, the convex rib structure 41 and concave rib structure 42 of the sealing structure 4 are both arranged around the vent hole 11 of the sound baffle 1. It can be understood that the convex rib structure 41 and concave rib structure 42 of the sealing structure 4 may optionally be located inside the fixing part 22 and the sound baffle 1 at the connection position by screws, that is, the convex rib structure 41 and concave rib structure 42 of the sealing structure 4 are located between the vent hole 11 and the screw, which is not limited here.

[0076] In one embodiment, the sealing structure 4 further includes a waterproof sealing ring 43, which is sandwiched between the fixing part 22 and the sound baffle 1 and is located between the convex rib structure 41 and the concave rib structure 42.

[0077] In this embodiment, as Figure 5 and Figure 6As shown, by setting a waterproof sealing ring 43, the waterproof sealing ring 43 can serve both as a buffer and a seal, and also prevent resonance and acoustic short circuits. It is understood that the waterproof sealing ring 43 is located between the raised rib structure 41 and the concave rib structure 42. Optionally, the width of the waterproof sealing ring 43 is greater than the width of the sealing structure 4. The width of the waterproof sealing ring 43 and the width of the sealing structure 4 are the widths along the radial direction of the vent hole 11, and are not limited here.

[0078] Optionally, the waterproof sealing ring 43 is made of a waterproof soft material. In this embodiment, the waterproof sealing ring 43 is sandwiched between the fixing part 22 and the sound baffle 1, and is located between the convex rib structure 41 and the concave rib structure 42. The waterproof sealing ring 43 is arranged around the vent hole 11.

[0079] In one embodiment, the opening area of ​​the vent 11 is greater than or equal to the effective vibration area of ​​the vibration system 32 of the speaker 3.

[0080] In this embodiment, by setting the opening area of ​​the vent hole 11 on the sound baffle 1 to be greater than or equal to the effective vibration area of ​​the vibration system 32 of the speaker 3, the air pressure on the back of the speaker 3 can be released without obstruction, thereby improving the sound production effect and acoustic performance.

[0081] Understandably, when the vent 11 of the sound baffle 1 is a large hole, the opening area of ​​the vent 11 is greater than or equal to the effective vibration area of ​​the vibration system 32 of the loudspeaker 3. Of course, the sound baffle 1 may have multiple vents 11, which are spaced apart and all communicate with the cavity 21. In this case, the sum of the opening areas of the multiple vents 11 of the sound baffle 1 is greater than or equal to the effective vibration area of ​​the vibration system 32 of the loudspeaker 3.

[0082] It should be noted that the effective vibration area of ​​the loudspeaker 3 is the effective vibration area Sd of the diaphragm 321 of the loudspeaker 3's vibration system 32. It is understood that the loudspeaker 3's vibration system 32 vibrates along a first direction, and the central axis of the loudspeaker 3 is parallel to or coincides with the first direction. In one embodiment, the angle between the central axis of the loudspeaker 3 and the central axis of the vent 11 ranges from 0° to 90°.

[0083] In this embodiment, as Figures 1 to 4 As shown, when the central axis of the speaker 3 coincides with or is parallel to the central axis of the vent 11, the angle formed between the central axis of the speaker 3 and the central axis of the vent 11 is 0°. Of course, in other embodiments, such as... Figure 7As shown, the angle θ formed by the central axis of the speaker 3 and the central axis of the vent 11 is 0° < angle θ ≤ 90°. Optionally, the angle θ can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, etc., and is not limited here.

[0084] In one embodiment, the minimum distance between the side of the speaker 3 facing the sound baffle 1 and the sound baffle 1 is greater than 15 mm.

[0085] In this embodiment, as Figure 4 and Figure 7 As shown, the minimum distance between the side of the speaker 3 facing the sound baffle 1 and the sound baffle 1 is set to be greater than 15mm. This avoids the airflow in the rear cavity of the speaker 3 from being reflected after contacting the sound baffle 1 or other structures or components of the vehicle through the vent 11, thus preventing the formation of standing waves with the airflow in the rear cavity of the speaker 3.

[0086] Understandably, to prevent dust, debris, or moisture from the external space on the side of the sound baffle 1 facing away from the speaker 3 from affecting the speaker 3 through the vent 11, in one embodiment, the sound-generating device 100 also includes a mesh cover connected to the sound baffle 1 and covering the vent 11. The mesh cover can be a dustproof mesh, a waterproof and breathable mesh, or a waterproof, dustproof, and breathable membrane, etc., and is not limited here.

[0087] In one embodiment, the loudspeaker 3 includes a frame 31, a vibration system 32, and a magnetic circuit system 33. The frame 31 has a first end 311 connected to the top and a second end 312 extending toward the cavity 21, so that a mounting cavity 313 communicating with the cavity 21 is formed inside the frame 31. The outer periphery of the vibration system 32 is connected to the first end 311, and the magnetic circuit system 33 is connected to the second end 312 and is disposed opposite to the side of the vibration system 32 facing the mounting cavity 313.

[0088] In this embodiment, as Figure 4 , Figures 7 to 9 , Figure 11 and Figure 12 As shown, the speaker 3's frame 31 has a mounting cavity 313, and the first end 311 of the frame 31 is connected to the top of the support member 2, while the second end 312 of the frame 31 extends into the cavity 21 and approaches the sound baffle 1. It can be understood that the outer periphery of the vibration system 32 is connected to the first end 311, and the magnetic circuit system 33 is connected to the second end 312 and is positioned opposite to the side of the vibration system 32 facing the mounting cavity 313.

[0089] It is understandable that the speaker frame 31 and the support member 2 can be separate components, such as by welding, screwing, or bonding, and this is not limited here. Optionally, the frame 31 and the support member 2 can be welded or bonded together.

[0090] It should be noted that in existing technologies, loudspeakers typically use a frame or housing to fix the vibration system and magnetic circuit system as a single unit, that is, assembling the loudspeaker as a whole structure. The loudspeaker is then fixed to the enclosure or support component 2 with screws, making the enclosure and the loudspeaker frame independent parts. Due to insufficient or weakened screw tightening force between the enclosure and the loudspeaker, the loudspeaker's vibration can cause the frame and enclosure to collide during operation, producing abnormal noise. Furthermore, to avoid this noise, an additional shim is usually added between the loudspeaker frame and the enclosure to prevent collisions and noise. This further increases costs due to the addition of the frame, bolts, shims, and other parts, and also increases the assembly process due to the assembly of these parts.

[0091] In this embodiment, as Figure 4 , Figures 7 to 9 , Figure 11 As shown, the speaker frame 31 and the support member 2 are integrally formed. By making the support member 2 and the speaker frame 31 into an integral structure, that is, integrating the speaker frame 31 onto the support member 2, and mounting the vibration system 32 and magnetic circuit system 33 of the speaker 3 onto the speaker frame 31 respectively, the abnormal noise caused by the collision between the speaker 3 and the support member 2 during vibration is effectively avoided. At the same time, the structure of pads or washers is eliminated, which simplifies the structure, reduces costs, and reduces assembly steps and processes. Making the support member 2 and the speaker frame 31 into an integral structure also effectively avoids air leakage caused by insufficient sealing between the speaker 3 and the support member 2.

[0092] Optionally, the first end 311 of the basin frame 31 is connected to the sound outlet of the support member 2. The second end 312 of the basin frame 31 extends toward the cavity 21 and away from the sound outlet, so that a mounting cavity 313 is formed inside the basin frame 31, and a cavity 21 communicating with the mounting cavity 313 is formed between the basin frame 31 and the support member 2.

[0093] In one embodiment, the vibration system 32 includes a diaphragm 321 and a voice coil 322 connected to the diaphragm 321, with the outer periphery of the diaphragm 321 connected to the first end 311. It is understood that the magnetic circuit system 33 is provided with a magnetic gap 333, and the end of the voice coil 322 furthest from the diaphragm 321 is correspondingly positioned to correspond to the magnetic gap 333.

[0094] In this embodiment, as Figure 4 , Figures 7 to 9 , Figure 11 and Figure 12 As shown, the diaphragm 321 of the vibration system 32 is connected to the first end 311 of the frame 31 and is positioned corresponding to the sound outlet. The magnetic circuit system 33 is connected to the second end 312 of the frame 31 and is located on the side of the diaphragm 321 facing the mounting cavity 313. It can be understood that the diaphragm 321, the mounting cavity 313 of the frame 31, and the magnetic circuit system 33 cooperate to form a rear cavity. By connecting the cavity 21 of the support member 2 to the rear cavity, the volume of the rear acoustic cavity of the sound-generating device 100 can be effectively expanded, thereby improving the acoustic performance and low-frequency extension capability of the sound-generating device 100.

[0095] In one embodiment, the magnetic circuit system 33 includes a U-shaped iron 331 and a central magnetic part 332. The U-shaped iron 331 is connected to the second end 312. The U-shaped iron 331 has a receiving groove 3311 that communicates with the mounting cavity 313. The central magnetic part 332 is disposed in the receiving groove 3311 and is spaced from the side wall of the receiving groove 3311 to form a magnetic gap 333.

[0096] In this embodiment, as Figure 12 As shown, by configuring the magnetic circuit system 33 with a U-shaped iron 331 and a central magnetic part 332, the central magnetic part 332 is fixedly mounted using the receiving groove 3311 of the U-shaped iron 331, such that the central magnetic part 332 is spaced from the side wall of the receiving groove 3311 to form a magnetic gap 333. Furthermore, the U-shaped iron 331 is connected to the second end 312 of the basin frame 31, thus achieving a fixed connection between the magnetic circuit system 33 and the basin frame 31.

[0097] To further improve connection stability, optionally, the U-shaped iron 331 and the basin frame 31 are integrally injection molded. In this embodiment, the U-shaped iron 331, the basin frame 31, and the support member 2 are integrally injection molded. It is understood that the U-shaped iron 331 of the magnetic circuit system 33 is made of a magnet or a magnetically conductive material. The U-shaped iron 331 is placed in the mold, and then the injection molding materials of the support member 2 and the basin frame 31 are introduced into the mold and integrally injection molded with the U-shaped iron 331; this is not limited here.

[0098] In this embodiment, as Figure 12 As shown, the central magnetic part 332 can be a central magnet and a central magnetic plate stacked together. The central magnet is connected to the bottom wall of the receiving groove 3311, and the periphery of the central magnet and the central magnetic plate are spaced apart from the side wall of the receiving groove 3311 to form a magnetic gap 333.

[0099] Of course, in other embodiments, the magnetic circuit system 33 can also be configured as a T-shaped iron and a side magnetic part. In this case, the T-shaped iron includes a base plate and a protruding post protruding from the center of the base plate. The side magnetic part is arranged around the protruding post and connected to the base plate, and the inner side of the side magnetic part is spaced from the outer peripheral wall of the protruding post to form a magnetic gap 333. It can be understood that the magnetic circuit system 33 is connected to the second end 312 of the frame 31 through the side magnetic part.

[0100] Optionally, the side magnetic part includes a side magnet and a side magnetic guide plate stacked together, with the side magnet sandwiched between the side magnetic guide plate and the base plate. In this embodiment, the side magnetic guide plate is integrally injection molded with the basin frame 31 and the support member 2, but this is not limited here.

[0101] In one embodiment, the U-shaped iron 331 includes a bottom wall and a side wall disposed around the periphery of the bottom wall. The side wall and the bottom wall enclose a receiving groove 3311. A central magnetic part 332 is disposed on the bottom wall and forms a magnetic gap 333 at intervals with the side wall. The side wall and the second end 312 are integrally injection molded.

[0102] In this embodiment, as Figure 12 As shown, the sidewall of U-shaped iron 331 is arranged around the periphery of the bottom wall, so that the sidewall and the bottom wall enclose and form a receiving groove 3311. Optionally, the sidewall and the bottom wall are arranged perpendicularly.

[0103] Understandably, the sidewall of U-shaped iron 331 is connected to the second end 312. Optionally, the end of the sidewall away from the bottom wall is connected to the second end 312. In this embodiment, the sidewall and the second end 312 are optionally integrally injection molded.

[0104] In order to improve the connection stability between U-shaped iron 331 and basin stand 31, in one embodiment, a limiting protrusion is provided on the outer side of the side wall, and a limiting groove is formed at the second end 312 to cooperate with the limiting protrusion. The limiting protrusion is embedded in the limiting groove.

[0105] In this embodiment, a limiting protrusion is provided on the outer wall of the sidewall away from the bottom wall, and a limiting groove is formed at the second end 312 of the tray holder 31, with the limiting protrusion embedded in the limiting groove. It can be understood that the limiting protrusion may be an annular protrusion extending around the outer periphery of the sidewall; or, multiple limiting protrusions may be provided, spaced apart along the outer periphery of the sidewall. Optionally, the limiting protrusions and limiting grooves may be provided in a one-to-one correspondence, which is not limited here.

[0106] In one embodiment, the bottom wall protrudes towards the central magnet 332 to form a boss portion, the central magnet 332 is disposed on the boss portion, and a clearance groove is formed between the boss portion and the side wall to form a magnetic gap 333, the clearance groove being used to avoid the voice coil 322.

[0107] In this embodiment, as Figure 12 As shown, by providing a boss on the bottom wall of the U-shaped iron 331, the boss can be used to support and install the central magnet 332, and a clearance groove can be formed between the boss and the side wall to form a magnetic gap 333. In this way, the clearance groove provides clearance for the voice coil 322 when it vibrates.

[0108] Understandably, the protrusion is formed by the side of the bottom wall facing away from the central magnet 332 and protruding towards the diaphragm 321, which makes the side of the bottom wall facing away from the central magnet 332 recessed, which is not limited here.

[0109] In one embodiment, the diaphragm 321 includes a spherical top, a cone portion surrounding the spherical top, a folded ring portion surrounding the cone portion, and a fixing portion disposed outside the folded ring portion. The fixing portion is connected to the first end 311, and the voice coil 322 is connected to the connection between the spherical top and the cone portion.

[0110] In this embodiment, as Figure 12 As shown, the dome, cone, surround, and fixing parts of the diaphragm 321 can be selected as an integrally molded structure, which can improve the strength of the diaphragm 321. Understandably, the diaphragm 321 is connected to the dome via the cone, achieving sealing on one hand and adjusting the position of the voice coil 322 within the magnetic gap 333 on the other.

[0111] Optionally, the cone-shaped portion extends into the mounting cavity 313, and from the top of the sphere to the folded ring portion, the cross-sectional dimension of the cone-shaped portion gradually increases along the vibration direction perpendicular to the vibration direction of the vibration system 32. In this embodiment, the outer contour of the diaphragm 321 is circular, and the cone-shaped portion is tapered.

[0112] Optionally, the top of the sphere protrudes towards the side away from the magnetic circuit system 33. This arrangement prevents the diaphragm 321 from interfering with the central magnetic portion 332 of the magnetic circuit system 33 during vibration. In this embodiment, the folded ring protrudes towards the side away from the magnetic circuit system 33. This arrangement prevents the folded ring from interfering with the first end 311 of the frame 31.

[0113] In one embodiment, a protrusion is provided at the connection between the top of the ball and the cone portion toward the voice coil 322, and the protrusion is connected to one end of the voice coil 322 near the diaphragm 321; wherein, the protrusion includes a plurality of protrusions, which are spaced apart around the top of the ball.

[0114] In this embodiment, as Figure 12 As shown, by providing a protrusion at the connection between the spherical top and the cone portion of the diaphragm 321, the structural strength of the diaphragm 321 is further enhanced. Simultaneously, the protrusion connects to the end of the voice coil 322 near the diaphragm 321. This allows for adjustment of the position of the voice coil 322 within the magnetic gap 333 and also creates a ventilation gap at the connection between the voice coil 322 and the spherical top and cone portion of the diaphragm 321, ensuring smooth airflow within the rear cavity. Optionally, multiple protrusions are provided, spaced apart around the spherical top.

[0115] To further ensure the balance of air pressure inside and outside the voice coil 322, the voice coil 322 is provided with multiple through-hole structures.

[0116] In one embodiment, the vibration system 32 further includes a centering support plate, the inner side of which is connected to the outer wall of the voice coil 322. A support platform is formed on the side of the frame 31 facing the mounting cavity 313. The support platform is located between the first end 311 and the second end 312. The outer side of the centering support plate is supported and connected to the support platform.

[0117] In this embodiment, as Figure 12 As shown, by setting a centering support, the voice coil 322 is centered, preventing polarization or oscillation during its vibration. Understandably, the centering support can be a spider structure. The centering support is annular, with its inner side connected to the outer wall of the voice coil 322, and its outer side connected to the frame 31.

[0118] Understandably, by forming a support platform on the side of the frame 31 facing the mounting cavity 313, such that the support platform is located between the first end 311 and the second end 312, the outer support of the centering support piece can be connected to the support platform, thereby improving the connection stability.

[0119] Optionally, from the first end 311 to the second end 312, the cross-sectional area of ​​the basin frame 31 along the vibration direction perpendicular to the vibration system 32 gradually decreases. In this embodiment, the basin frame 31 has a basin-shaped or bowl-shaped structure. Both the first end 311 and the second end of the basin frame 31 can be selected as a ring structure.

[0120] In one embodiment, the basin frame 31 is provided with a plurality of through holes, which are spaced apart and located between the first end 311 and the second end 312. The plurality of through holes connect the cavity 21 and the mounting cavity 313.

[0121] In this embodiment, as Figure 8 , Figure 9 and Figure 11 As shown, by providing multiple through holes in the frame 31, the cavity 21 and the mounting cavity 313 are connected through the multiple through holes, thus ensuring that the rear cavity of the speaker 3 is connected to the cavity 21, thereby increasing the volume of the rear cavity. Optionally, the multiple through holes can be located on both sides of the centering support, so as to balance the air pressure on both sides of the centering support.

[0122] In one embodiment, the sound-generating device 100 further includes a reflector cone 5, which is connected to the top and located on the side of the speaker 3 facing away from the sound baffle 1. A sound outlet 51 is formed between the reflector cone 5 and the support member 2.

[0123] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 13As shown, by setting a reflector cone 5 and placing the reflector cone 5 on one side of the sound radiation surface of the speaker 3, a sound outlet 51 is formed between the reflector cone 5 and the support member 2. In this way, the sound emitted from the speaker 3 is directly transmitted to the cone surface of the reflector cone 5, and the reflector cone 5 radiates the sound in all directions and is transmitted through the sound outlet 51, thereby making the sound emitted by the sound-emitting device 100 radiate in all directions, thereby improving the stereo effect of the sound emitted by the sound-emitting device 100.

[0124] Optionally, the minimum distance from the side of the reflector cone 5 facing the speaker 3 to the speaker 3 is 2 to 5 times the maximum linear displacement of the speaker 3's vibration system 32. Understandably, this arrangement ensures that the sound-generating device 100 can achieve a stereo sound effect while avoiding the generation of standing waves.

[0125] It should be noted that the maximum linear displacement of the vibration system 32 of the loudspeaker 3 is represented by Xmax, which is the maximum displacement that allows a constant number of coils to remain within the magnetic gap 333 when the voice coil 322 of the loudspeaker 3 moves in a certain direction within the magnetic gap 333. Taking a moving-coil loudspeaker as an example, Xmax can be calculated by subtracting the absolute value of the height of the magnetic gap 333 from the winding height of the voice coil 322 and then dividing by 2. The winding height of the voice coil 322 refers to the height of the voice coil wires in the vibration direction of the voice coil 322, or the axial dimension of the voice coil. The height of the magnetic gap 333 refers to the height of the effective magnetic field of the magnetic gap 333 in the vibration direction of the voice coil 322; for a conventional magnetic circuit system, it usually refers to the height of the washer on the side of the magnetic circuit system closest to the diaphragm.

[0126] In one implementation, such as Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 13 As shown, the reflector cone 5 includes a reflector plate 52 and a support column 53. One end of the support column 53 is connected to the reflector plate 52, and the other end of the support column 53 is connected to the top, so that the reflector plate 52 is opposite to and spaced from the speaker 3.

[0127] Optionally, the support columns 53 include multiple columns, which are spaced apart and arranged around the speaker 3. The two ends of the multiple support columns 53 are respectively connected to the reflector 52 and the support member 2. In this way, the sound emitted from the speaker 3 is directly transmitted to the conical surface of the reflector cone 5, which scatters the sound in all directions and transmits it through multiple sound outlets 51, thereby making the sound emitted by the sound-emitting device 100 scatter in all directions and improving the stereo effect of the sound emitted by the sound-emitting device 100.

[0128] In one embodiment, a groove 521 is provided on the side of the reflector 52 facing the speaker 3. The groove 521 is located in the center of the reflector 52 and extends from the periphery of the reflector 52 to the groove 521. The side of the reflector 52 facing the speaker 3 is inclined toward the direction of the speaker 3.

[0129] Understandable, such as Figure 4 , Figure 7 and Figure 13 As shown, the reflector 52 is set with an inclined conical surface on the side facing the speaker 3, so that the sound emitted from the speaker 3 is directly transmitted to the conical surface of the reflector 52, and the conical surface of the reflector 52 scatters the sound in all directions.

[0130] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 13 As shown, a protruding post 522 is formed in the center of the side of the reflector 52 facing away from the speaker 3, and multiple partitions 523 are also provided on the side of the reflector 52 facing away from the speaker 3. Understandably, this arrangement can effectively enhance the structural strength of the reflector 52.

[0131] Optionally, multiple partitions 523 are arranged at intervals. In this embodiment, as... Figure 1 , Figure 4 , Figure 7 and Figure 13 As shown, one end of each of the multiple partitions 523 is connected to the protrusion 522, and the other end of each of the multiple partitions 523 extends toward the periphery of the reflector 52, so that the multiple partitions 523 are arranged radially with the protrusion 522 as the center.

[0132] Traditional car speaker systems require a 10L to 20L enclosure for subwoofers. The sound-generating device 100 of this invention eliminates this traditional enclosure structure, reducing its thickness to include only the height or thickness of the support member 2 for mounting the speaker 3 and the reflector cone 5. This saves interior space, reducing the volume of the sound-generating device 100 by 80% compared to traditional enclosures. Furthermore, while the closed-box subwoofer frequency (fb) of a traditional car speaker system is approximately 55Hz (20L enclosure volume), the sound-generating device 100, without the constraints of internal enclosure volume and air stiffness, achieves f0 ≤ 45Hz, and its low-frequency attenuation (f3) decreases by ≥20%. It also allows for convenient concealment of the sound-generating device 100 within sheet metal layers, such as the floor, storage rack, fender, or roof, enabling more flexible placement of the device.

[0133] This utility model also proposes a vehicle that includes the aforementioned sound-generating device 100. The specific structure of the sound-generating device 100 is as described in the foregoing embodiments. Since this vehicle adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0134] In this embodiment, the vehicle includes a vehicle body, within which a cabin is formed. A sound-emitting device 100 is disposed within the cabin, and the sound baffle 1 of the sound-emitting device 100 is connected to the inner wall of the vehicle body. It is understood that the sound baffle 1 may be the floor, roof, trunk door panel, storage rack sheet metal, wheel hub sheet metal, etc. of the vehicle body, and is not limited here.

[0135] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A sound-generating device, applied to a vehicle, characterized in that, The sound-generating device includes: A sound baffle, wherein the sound baffle is provided with ventilation holes; A support member, wherein the support member has a cavity, and the support member has a connected top end and a bottom end, the bottom end being connected to the sound baffle so that the cavity communicates with the vent. A loudspeaker, which is disposed within the cavity and connected to the top.

2. The sound-generating device as described in claim 1, characterized in that, The bottom end is provided with a fixing part, which extends along the surface of the sound baffle and is connected to the sound baffle. A sealing structure is provided between the fixing part and the sound baffle so that the fixing part is sealed to the sound baffle through the sealing structure. Wherein, the fixing part is formed by bending the bottom end toward the side opposite to the cavity; or, the support member and the fixing part are integrally injection molded; And / or, the fixing part is locked and connected to the sound baffle by screws.

3. The sound-generating device as described in claim 2, characterized in that, The sealing structure includes a convex rib structure and a concave rib structure. One of the convex rib structure and the concave rib structure is provided in the fixing part, and the other is provided in the sound baffle. When the fixing part is connected to the sound baffle, the convex rib structure is accommodated and confined within the concave rib structure.

4. The sound-generating device as described in claim 3, characterized in that, The sealing structure also includes a waterproof sealing ring, which is sandwiched between the fixing part and the sound baffle, and is located between the convex rib structure and the concave rib structure; The waterproof sealing ring is made of a waterproof soft material; And / or, the waterproof sealing ring is arranged around the vent hole; And / or, the convex rib structure is provided on the fixing part, the convex rib structure is formed by protruding from the side of the fixing part facing the sound baffle towards the sound baffle, and the concave rib structure is provided on the sound baffle, the concave rib structure is formed by recessing from the side of the sound baffle facing the fixing part towards the direction away from the fixing part.

5. The sound-generating device as described in claim 1, characterized in that, The opening area of ​​the vent is greater than or equal to the effective vibration area of ​​the speaker's vibration system. And / or, the vent holes include multiple vent holes, which are spaced apart and all communicate with the cavity; And / or, the angle between the central axis of the loudspeaker and the central axis of the vent is in the range of 0° to 90°.

6. The sound-generating device as claimed in claim 1, characterized in that, The minimum distance between the side of the loudspeaker facing the sound baffle and the sound baffle is greater than 15mm; And / or, the sound-generating device further includes a mesh cover connected to the sound baffle and covering the vent.

7. The sound-generating device as claimed in claim 1, characterized in that, The loudspeaker includes: A basin stand having a first end connected to the top and a second end extending toward the cavity, such that a mounting cavity communicating with the cavity is formed inside the basin stand; A vibration system, wherein the outer periphery of the vibration system is connected to the first end; and A magnetic circuit system, which is connected to the second end and is disposed opposite to the side of the vibration system facing the mounting cavity.

8. The sound-generating device as described in claim 7, characterized in that, The vibration system includes a diaphragm and a voice coil connected to the diaphragm. The outer periphery of the diaphragm is connected to the first end. The magnetic circuit system includes a U-shaped iron and a central magnet. The U-shaped iron is connected to the second end. The U-shaped iron has a receiving groove communicating with the mounting cavity. The central magnet is disposed in the receiving groove and spaced from the side wall of the receiving groove to form a magnetic gap. The end of the voice coil away from the diaphragm is inserted into the magnetic gap. The U-shaped iron and the frame are integrally injection molded. And / or, the basin frame and the support member are integrally formed; or, the basin frame and the support member are welded or bonded together.

9. The sound-generating device as claimed in claim 1, characterized in that, The sound-generating device further includes a reflector cone connected to the top end and located on the side of the speaker facing away from the sound baffle, with the reflector cone and the support forming a sound outlet; The minimum distance from the side of the reflector cone facing the speaker to the speaker is 2 to 5 times the maximum linear displacement of the speaker's vibration system.

10. The sound-generating device as claimed in claim 9, characterized in that, The reflective cone includes a reflector plate and a support column. One end of the support column is connected to the reflector plate, and the other end of the support column is connected to the top end, so that the reflector plate is opposite to and spaced apart from the speaker. The reflector has a groove on the side facing the speaker, the groove is located in the center of the reflector, and extends from the periphery of the reflector to the groove. The side of the reflector facing the speaker is inclined toward the direction of the speaker. And / or, a protruding post is formed in the center of the side of the reflector facing away from the speaker, and a plurality of partitions are also provided on the side of the reflector facing away from the speaker; wherein, the plurality of partitions are spaced apart; and / or, one end of each of the plurality of partitions is connected to the protruding post, and the other end of each of the plurality of partitions extends toward the periphery of the reflector, so that the plurality of partitions are arranged radially with the protruding post as the center. And / or, the support columns include a plurality of columns, which are spaced apart and arranged around the speaker, and the two ends of the plurality of support columns are respectively connected to the reflector and the support member.

11. A vehicle, characterized in that, The vehicle includes a sound-generating device as described in any one of claims 1 to 10.

Images