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CN-224205247-U - Microphone fixing mechanism for noise test in vehicle

CN224205247UCN 224205247 UCN224205247 UCN 224205247UCN-224205247-U

Abstract

The utility model provides a microphone fixing mechanism for in-car noise test, which comprises a device body, wherein the device body comprises an adjusting mechanism, a first clamping mechanism and a second clamping mechanism are respectively arranged at the free end of the adjusting mechanism, the first clamping mechanism is used for clamping a microphone, the second clamping mechanism is fixedly clamped with a headrest support, a plurality of bolt holes are formed in the adjusting mechanism, and the position of the microphone relative to the headrest support is adjusted through bolts penetrating through the corresponding bolt holes. According to the utility model, the first clamping mechanism, the second clamping mechanism and the adjusting mechanism fixed with the first clamping mechanism and the second clamping mechanism are arranged, so that the microphone for testing the noise in the vehicle can be adjusted and fixed on the headrest support of the seat, and the defect of fixing the microphone by the adhesive tape or the elastic rope is avoided.

Inventors

  • LIN JUGUANG
  • FANG YIPING
  • Liu Beilin

Assignees

  • 合肥巨一动力系统有限公司

Dates

Publication Date
20260505
Application Date
20250225

Claims (10)

  1. 1. The utility model provides a microphone fixed establishment for noise test in car, its characterized in that includes the device body, the device body includes adjustment mechanism, adjustment mechanism's free end is provided with first fixture (110) and second fixture (210) respectively, wherein: The first clamping mechanism (110) is used for clamping a microphone; the second clamping mechanism (210) is clamped and fixed with the headrest bracket; The adjusting mechanism is provided with a plurality of bolt holes, and the position of the microphone relative to the headrest bracket is adjusted by penetrating bolts through the corresponding bolt holes.
  2. 2. The microphone fixing mechanism for in-vehicle noise testing according to claim 1, wherein the device body has an L-shaped structure.
  3. 3. The in-vehicle noise test microphone fixing mechanism according to claim 1, wherein the adjusting mechanism includes a first adjusting assembly (100) and a second adjusting assembly (200), and the first adjusting assembly (100) is vertically fixed to both end portions of the second adjusting assembly (200).
  4. 4. A microphone mounting for an in-vehicle noise testing according to claim 3, characterized in that the free end of the first adjustment assembly (100) is provided with the first clamping mechanism (110) and the free end of the second adjustment assembly (200) is provided with the second clamping mechanism (210).
  5. 5. A microphone fixing mechanism for in-vehicle noise testing according to claim 3, wherein the first adjusting assembly (100) and the second adjusting assembly (200) each comprise a sleeve and a plastic pipe which are nested with each other, the sleeve and the plastic pipe are provided with the bolt holes of equal aperture, a plurality of equally spaced bolt holes are provided along the length direction of the plastic pipe, and the position of the microphone relative to the headrest bracket is adjusted by passing a bolt through the bolt holes at the corresponding positions of the sleeve and the plastic pipe.
  6. 6. A microphone mounting structure for in-vehicle noise testing according to claim 3, wherein the first clamping mechanism (110) comprises a first hard plastic plate (111) and a second hard plastic plate (112) arranged opposite to each other, wherein: -said first rigid plastic plate (111) is fixed to the free end of said first adjustment assembly (100); The first hard plastic plate (111) and the second hard plastic plate (112) are connected through bolts, and the distance between the first hard plastic plate (111) and the second hard plastic plate (112) is reduced by screwing the bolts so as to clamp the microphone.
  7. 7. The in-vehicle noise testing microphone fixing mechanism according to claim 6, wherein contact surfaces of the first hard plastic plate (111), the second hard plastic plate (112) and the microphone are provided with opposing arc-shaped grooves to stabilize the microphone.
  8. 8. The in-vehicle noise testing microphone fixing mechanism according to claim 6, wherein contact surfaces of the first hard plastic plate (111), the second hard plastic plate (112), and the microphone are provided with an anti-slip rubber pad.
  9. 9. A microphone mounting structure for in-vehicle noise testing according to claim 3, wherein the second holding mechanism (210) comprises a third hard plastic plate (211) and a fourth hard plastic plate (212) disposed opposite to each other, wherein: -said third rigid plastic plate (211) is fixed to the free end of said second adjustment assembly (200); The third hard plastic plate (211) and the fourth hard plastic plate (212) are movably connected through bolts, and the distance between the third hard plastic plate (211) and the fourth hard plastic plate (212) is reduced by screwing the bolts so as to be fastened on the headrest bracket.
  10. 10. The in-vehicle noise test microphone fixing mechanism according to claim 9, wherein the contact surface of the third hard plastic plate (211) and the fourth hard plastic plate (212) that hold the headrest bracket is provided with wavy serrations.

Description

Microphone fixing mechanism for noise test in vehicle Technical Field The utility model relates to the technical field of in-vehicle noise testing equipment, in particular to a microphone fixing mechanism for in-vehicle noise testing. Background In the current noise test technology field in a vehicle, a microphone is generally mounted on a seat headrest side by an adhesive tape or an elastic cord. However, it has been found that the above-described manner of fixing the microphone by means of an adhesive tape or an elastic cord has a series of drawbacks, such as: 1. Because the microphone is in direct contact with the headrest of the seat, relative movement is inevitably generated between the microphone and the headrest in the daily use process, and friction is generated. The friction can interfere the normal perception and collection of the noise in the vehicle by the microphone, so that the test result deviates from the actual situation, and the noise level in the vehicle cannot be truly reflected. 2. When the same vehicle is subjected to two different noise tests, it is difficult to ensure that the positions of each installation are exactly the same due to the need to disassemble and reinstall the microphone. Even small positional differences may have a significant impact on the results of the noise acquisition. Because the noise distribution of different positions in the vehicle is uneven, the variation of the microphone position can cause the difference of the acquired noise samples, so that the two test results lack comparability, and reliable basis cannot be provided for the noise performance evaluation of the vehicle. 3. When the automobile runs on a bumpy road, the automobile body can generate larger vibration and shaking. Under such a working condition, the microphone fixed by the adhesive tape or the elastic rope is easy to change in position, and even can fall off from the original fixed position, so that noise data of a preset position cannot be accurately acquired. Therefore, it is important to design a microphone fixing tool with a simple structure. Disclosure of utility model In order to solve the technical problem, the utility model provides a microphone fixing mechanism for noise test in a vehicle, which comprises a device body, wherein the device body comprises an adjusting mechanism, and the free end of the adjusting mechanism is respectively provided with a first clamping mechanism and a second clamping mechanism, wherein: The first clamping mechanism is used for clamping the microphone; The second clamping mechanism is clamped and fixed with the headrest bracket; The adjusting mechanism is provided with a plurality of bolt holes, and the position of the microphone relative to the headrest bracket is adjusted by penetrating bolts through the corresponding bolt holes. Further, the device body is of an L-shaped structure. Further, the adjusting mechanism comprises a first adjusting component and a second adjusting component, and the first adjusting component and the two ends of the second adjusting component are vertically fixed. Further, the free end of the first adjusting component is provided with the first clamping mechanism, and the free end of the second adjusting component is provided with the second clamping mechanism. Further, the first adjusting component and the second adjusting component comprise sleeves and plastic pipes which are mutually nested, the sleeves and the plastic pipes are provided with bolt holes with equal apertures, a plurality of equally spaced bolt holes are formed in the length direction of the plastic pipes, and the positions of the microphones relative to the headrest support are adjusted through bolts penetrating through the bolt holes in the corresponding positions of the sleeves and the plastic pipes. Further, the first clamping mechanism comprises a first hard plastic plate and a second hard plastic plate which are oppositely arranged, wherein: the first hard plastic plate is fixed at the free end of the first adjusting component; The first hard plastic plate and the second hard plastic plate are connected through bolts, and the distance between the first hard plastic plate and the second hard plastic plate is reduced by screwing the bolts so as to clamp the microphone. Further, the contact surfaces of the first hard plastic plate, the second hard plastic plate and the microphone are provided with opposite arc-shaped grooves so as to stabilize the microphone. Further, the contact surfaces of the first hard plastic plate, the second hard plastic plate and the microphone are provided with anti-skid rubber pads. Further, the second clamping mechanism comprises a third hard plastic plate and a fourth hard plastic plate which are oppositely arranged, wherein: the third hard plastic plate is fixed at the free end of the second adjusting component; The third hard plastic plate is movably connected with the fourth hard plastic plate through bolts, and the dista