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CN-224233842-U - Vibration reducing structure of vehicle door bass loudspeaker

CN224233842UCN 224233842 UCN224233842 UCN 224233842UCN-224233842-U

Abstract

The utility model provides a vibration reducing structure of a vehicle door woofer, which comprises a vibration reducing part, wherein the vibration reducing part is used for reducing vibration noise of the vehicle door woofer, the vibration reducing part is arranged at the rear end of the vehicle door woofer, the vibration reducing part is integrally circular, the vibration reducing part and the vehicle door woofer are coaxially arranged, and the diameter of the vibration reducing part is smaller than the inner diameter of the rear end of the vehicle door woofer, so that an annular gap is formed between the edge of the vibration reducing part and the inner side edge of the rear end of the vehicle door woofer. According to the vibration reduction structure of the vehicle door bass loudspeaker, through the carefully designed vibration reduction piece, the circular arc-shaped reflecting plate and the connecting assembly thereof, and reasonable material selection and structural optimization, the remarkable vibration reduction and noise reduction effects are realized, the NVH performance of a vehicle is improved, and a quieter and more comfortable riding environment is provided for drivers and passengers.

Inventors

  • LIU JUN

Assignees

  • 惠州市蓝驱科技有限公司

Dates

Publication Date
20260512
Application Date
20250611

Claims (10)

  1. 1. A door woofer vibration reducing structure, comprising: Vibration reducing part (1), vibration reducing part (1) is used for reducing the vibration noise of door woofer, just vibration reducing part (1) is installed in the rear end of door woofer (2), vibration reducing part (1) is whole circular, vibration reducing part (1) with door woofer (2) coaxial setting, just the diameter of vibration reducing part (1) is less than the rear end internal diameter of door woofer (2), makes vibration reducing part (1)'s edge with be formed with annular gap between the rear end inboard edge of door woofer (2).
  2. 2. The door woofer vibration reducing structure according to claim 1, wherein a rear end of the vibration reducing member (1) is provided protruding inside a rear end of the door woofer (2).
  3. 3. The vibration reducing structure of the door woofer according to claim 2, wherein the vibration reducing member (1) comprises a circular arc-shaped reflecting plate (101), the circular arc-shaped reflecting plate (101) is installed at the rear end of the door woofer (2) through a connecting component, the protruding cambered surface of the circular arc-shaped reflecting plate (101) is arranged towards the front end of the door woofer (2), sound waves generated when the door woofer (2) works under the action of the circular arc-shaped reflecting plate (101) are reflected to the direction of 65-75 degrees and are emitted towards the door outer door panel, vibration of the door due to the operation of the door woofer (2) can be effectively reduced, the NVH performance of the vehicle is improved, and driving and riding experiences are improved.
  4. 4. A vehicle door woofer vibration reducing structure according to claim 3, wherein the circular arc-shaped reflecting plate (101) is made of a lightweight high-strength material including, but not limited to, aluminum alloy or high-temperature plastic composite material, to reduce weight and improve durability.
  5. 5. The vehicle door woofer vibration reducing structure according to claim 4, wherein the connection assembly includes a circular connection seat (102) and a fitting seat (201), the circular connection seat (102) is integrally provided at an intermediate position of the circular arc-shaped reflection plate (101), the fitting seat (201) is fixedly installed inside a rear end of the vehicle door woofer (2), and the fitting seat (201) is fixedly connected with the circular connection seat (102) by a screw (105).
  6. 6. The vibration reducing structure for a vehicle door woofer as defined in claim 5, wherein a plurality of mounting holes (103) are integrally formed at the edge of the circular connecting seat (102) and are arranged in a circular and equiangular manner, threaded holes are formed in the fitting seat (201), and the screw rods of the screws (105) pass through the mounting holes (103) and are screwed into the threaded holes in the fitting seat (201), so that the circular connecting seat (102) is fixedly mounted on the fitting seat (201), and the circular arc-shaped reflecting plate (101) is fixedly mounted at the rear end of the vehicle door woofer (2).
  7. 7. The vibration reduction structure of a vehicle door woofer as defined in claim 6, wherein a plurality of reinforcing rib plates (104) are integrally provided between the outer side surface of the circular connecting seat (102) and the concave cambered surface of the circular arc-shaped reflecting plate (101), and the plurality of reinforcing rib plates (104) are arranged around the circular connecting seat (102) in a circular equiangular manner.
  8. 8. The vehicle door woofer vibration reducing structure according to claim 7, wherein the shape design of the circular arc-shaped reflecting plate (101) is based on the following wave equation: Where u (x, y, z, t) represents the acoustic displacement at position (x, y, z) and time t, c is the propagation velocity of the acoustic wave in the medium, and by solving this equation, the optimal curvature and size of the circular arc-shaped reflecting plate (101) can be determined in combination with the parameters of the door woofer (2) to achieve the optimal acoustic wave reflection effect and vibration reduction.
  9. 9. The vehicle door woofer vibration reducing structure according to claim 8, wherein the edge shape design of the circular arc-shaped reflecting plate (101) is optimized by the following diffraction equation: Wherein, I (θ) is the intensity of the sound wave when the diffraction angle is θ, I 0 is the intensity of the sound wave when no diffraction is performed, a is the radius of the circular arc-shaped reflecting plate (101) or the related dimensional parameter, and the equation is used for optimizing the edge shape of the circular arc-shaped reflecting plate (101) so as to reduce the energy loss caused by the diffraction of the sound wave and enhance the reflection of the sound wave in the set direction.
  10. 10. The door woofer vibration reducing structure according to any one of claims 3 to 9, wherein the circular arc-shaped reflecting plate (101) is located between the door inner door panel and the door outer door panel when the door woofer (2) is mounted on the door inner door panel.

Description

Vibration reducing structure of vehicle door bass loudspeaker Technical Field The utility model relates to the technical field of automobile sound, in particular to a vibration reduction structure of a vehicle door bass loudspeaker. Background In existing car audio systems, speakers produce sound waves that vibrate backwards when in operation, which can cause resonance in the outermost sheet of the car door panels, thereby increasing the NVH noise inside and outside the car. This phenomenon is particularly pronounced in low frequency speakers because the energy of the low frequency sound waves is greater and more likely to cause structural resonances. At present, solutions on the market tend to be limited in effectiveness and cannot effectively reduce vibrations and noise caused by the loudspeakers. For this reason, a vehicle door woofer vibration reduction structure is proposed. Disclosure of utility model The utility model aims to solve the problems in the background art and provides a vibration reduction structure of a vehicle door bass loudspeaker. The specific technical scheme is as follows: The vibration reducing structure of the vehicle door woofer comprises a vibration reducing part, wherein the vibration reducing part is used for reducing vibration noise of the vehicle door woofer, the vibration reducing part is arranged at the rear end of the vehicle door woofer and is integrally round, the vibration reducing part and the vehicle door woofer are coaxially arranged, the diameter of the vibration reducing part is smaller than the inner diameter of the rear end of the vehicle door woofer, and an annular gap is formed between the edge of the vibration reducing part and the inner side edge of the rear end of the vehicle door woofer. As a preferable mode of the present utility model, the rear end of the vibration reducing member is provided protruding inside the rear end of the door woofer. As a preferable scheme of the utility model, the vibration reducing piece comprises a circular arc-shaped reflecting plate, the circular arc-shaped reflecting plate is arranged at the rear end of the vehicle door woofer through a connecting component, the protruding cambered surface of the circular arc-shaped reflecting plate is arranged towards the front end of the vehicle door woofer, and sound waves generated when the vehicle door woofer works under the action of the circular arc-shaped reflecting plate are reflected to 65-75 degrees and are emitted towards the outer door plate of the vehicle door, so that the vibration of the vehicle door caused by the operation of the vehicle door woofer can be effectively reduced, the NVH performance of the vehicle is improved, and the driving and riding experience is improved. As a preferred embodiment of the present utility model, the circular arc-shaped reflecting plate is made of a light-weight high-strength material including, but not limited to, aluminum alloy or high-temperature plastic composite material, to reduce weight and improve durability. As a preferable scheme of the utility model, the connecting component comprises a circular connecting seat and a matching seat, wherein the circular connecting seat is integrally arranged at the middle position of the circular arc-shaped reflecting plate, the matching seat is fixedly arranged in the rear end of the vehicle door bass loudspeaker, and the matching seat is fixedly connected with the circular connecting seat through a screw. As a preferable scheme of the utility model, a plurality of mounting holes which are arranged in a circumferential equiangular manner are integrally formed at the edge of the circular connecting seat, threaded holes are formed in the assembling seat, and the screw rods of the screws penetrate through the mounting holes and are screwed into the threaded holes in the assembling seat, so that the circular connecting seat is fixedly mounted on the assembling seat, and the circular arc-shaped reflecting plate is fixedly mounted at the rear end of the vehicle door bass loudspeaker. As a preferable scheme of the utility model, a plurality of reinforcing rib plates are integrally arranged between the outer side surface of the circular connecting seat and the concave cambered surface of the circular arc-shaped reflecting plate, and the reinforcing rib plates are arranged around the circular connecting seat at equal angles in a circumferential direction. As a preferable mode of the present utility model, the shape design of the circular arc-shaped reflecting plate is based on the following wave equation: Where u (x, y, z, t) represents the acoustic displacement at position (x, y, z) and time t, c is the propagation velocity of the acoustic wave in the medium, and by solving this equation, the optimal curvature and size of the circular arc-shaped reflecting plate can be determined in combination with the parameters of the door woofer to achieve the optimal acoustic wave reflection effect and vibration redu