Motor vehicle vibration abnormal sound source positioning device

Abstract

The utility model discloses a motor vehicle vibration abnormal sound source positioning device, which belongs to the technical field of abnormal sound source positioning and comprises a base and a positioning device body, a plurality of sound sensors in an index spiral array are arranged on the positioning device body, the sound sensors adopt directional microphones, and the directional microphones are arranged on the base. The positioning device body is provided with four picture capturers which are distributed in a rectangular array mode, the top of the base is rotationally connected with a rotating ring, the rotating ring is provided with a first arc-shaped plate through a supporting plate, a second arc-shaped plate is fixed to the bottom of the positioning device body, and the second arc-shaped plate is located above the first arc-shaped plate; sleeves are fixed to the two sides of the bottom of the second arc-shaped plate correspondingly, connecting rods are arranged at the positions, located in the sleeves, of the bottom of the second arc-shaped plate correspondingly, and the bottom ends of the two connecting rods are connected with second anti-skid pads correspondingly. When the motor vehicle vibration abnormal sound source positioning device is used, the position of abnormal sound can be relatively accurately measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of abnormal noise source positioning, and in particular relates to a device for positioning abnormal noise sources of motor vehicle vibration. Background Art

[0002] In recent years, the automotive industry has developed rapidly, with new products emerging in an endless stream and development cycles gradually shortening. As people's living standards improve, consumers' demands for automotive quality are becoming increasingly stringent. In addition to traditional indicators such as economy, power, and braking performance, consumers are increasingly concerned about the driving experience. NVH (noise, vibration, and harshness) performance, as a key factor affecting the driving experience, is gaining increasing attention from users and manufacturers. Abnormal noise generated during driving is a common NVH problem, which can cause passengers to feel tired and irritated, reducing ride comfort. Therefore, future automotive design trends will focus on creating a good and comfortable in-vehicle acoustic environment to meet consumer expectations.

[0003] The car interior system is the part that passengers come into direct contact with. When the interior parts make irregular and unpredictable noises (i.e. "abnormal noises"), passengers can often perceive them clearly, which affects the quality of the vehicle. In order to determine the source of the abnormal noise, an abnormal noise locating device is required. However, abnormal noises in the interior of a motor vehicle are usually only generated during the driving of the vehicle. If the existing abnormal noise locating device is directly applied to a moving vehicle, since multiple abnormal noise sources may appear at the same time while the vehicle is driving and the vehicle itself may also generate noise, this will cause the abnormal noise locating device to be unable to accurately identify the specific location of the abnormal noise. Utility Model Content

[0004] The purpose of the present invention is to provide a device for locating the source of abnormal vibration noise in a motor vehicle, so as to solve the problem that the existing abnormal noise locating device proposed in the above background technology cannot accurately identify the specific location of the abnormal noise when applied to a moving vehicle.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a device for locating abnormal vibration noise sources in a motor vehicle, comprising a base and a locating device body, the locating device body being provided with a plurality of acoustic sensors in an exponential spiral array, the acoustic sensors being directional microphones, and the locating device body being provided with four image capturers distributed in a rectangular array;

[0006] The top of the base is rotatably connected to a rotating ring, and the rotating ring is provided with a first arc plate through a support plate. The bottom of the positioning device body is fixed with a second arc plate, and the second arc plate is located above the first arc plate.

[0007] In one embodiment, a driving motor is fixed to the bottom of the first arc-shaped plate, a gear is coaxially provided on the output shaft of the driving motor, the gear passes through the first arc-shaped plate, and the top of the gear is located above the first arc-shaped plate.

[0008] In one embodiment, a toothed plate that matches the gear is provided at the bottom of the second arc-shaped plate.

[0009] In one embodiment, sleeves are fixed on both sides of the bottom of the second curved plate, a connecting rod is provided inside each sleeve at the bottom of the second curved plate, the bottom ends of the two connecting rods are connected to a second anti-slip pad, and penetrating cuts are opened on both sides of the top of the first curved plate, and each of the connecting rods passes through one of the cuts.

[0010] In one embodiment, a small air pump is fixed on the top of the second curved plate, and the small air pump is connected to two folding air bags via an air duct. Each of the folding air bags is located inside one of the sleeves, and the bottom of the two folding air bags is provided with a first anti-slip pad that acts on the first curved plate.

[0011] In one embodiment, the first anti-slip pad is located above the first curved plate.

[0012] In one embodiment, when the foldable airbag is deployed, the first anti-slip pad is in close contact with the top of the first curved plate. When the foldable airbag is deflated, the first anti-slip pad is separated from the first curved plate.

[0013] Beneficial effects

[0014] The technical effects and advantages of the vehicle vibration abnormal sound source locating device are as follows:

[0015] When using the motor vehicle vibration and noise source locating device to determine the location of abnormal noise in a moving vehicle, the locating device body can collect graphic information of various locations in the motor vehicle through an image capturer, and use the acoustic sensors in an exponential spiral array thereon to relatively accurately measure the location of the abnormal noise. The motor vehicle vibration and noise source locating device can relatively accurately measure the location of the abnormal noise when in use.

[0016] When the vehicle vibration and noise source locating device is in use, the gas in the two folded air bags is released through a small air pump until the bottom end of the sleeve is attached to the top of the first curved plate. At this time, the toothed plate is meshed with the gear, and the drive motor is turned on to drive the gear to rotate, so that the second curved plate can rotate the positioning device body with an angle. When in use, the vehicle vibration and noise source locating device can adjust and fix the orientation of the positioning device body according to the needs of abnormal noise measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the vehicle vibration abnormal noise source locating device;

[0019] Figure 2 for Figure 1 Partial structural decomposition diagram;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the second curved plate, small air pump, air guide tube and folding airbag;

[0021] Figure 4 for Figure 1 Structural diagram of the first state;

[0022] Figure 5 for Figure 1 Schematic diagram of the structure in the second state.

[0023] In the picture:

[0024] 101. Base; 102. Rotating ring; 103. Support plate;

[0025] 111. Positioning device body; 112. Acoustic sensor; 113. Image capture device;

[0026] 201, first curved plate; 202, drive motor; 203, gear; 204, cutout;

[0027] 211. Second curved plate; 212. Tooth plate; 213. Small air pump; 214. Air guide tube; 215. Folding airbag; 216. First anti-slip pad;

[0028] 221. Sleeve; 222. Connecting rod; 223. Second anti-slip pad. DETAILED DESCRIPTION

[0029] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In order to avoid confusion with the present invention, some technical features that are well known in the art are not described.

[0030] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0031] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., subject to actual needs.

[0032] Please refer to Figure 1-Figure 5 The device for locating the source of abnormal vibration noise in a motor vehicle shown includes a base 101 and a positioning device body 111. When in use, the device for locating the source of abnormal vibration noise in a motor vehicle needs to be used in conjunction with a computer to transmit the data collected by the positioning device body 111 to the computer, and the measured data is displayed on the computer.

[0033] In this embodiment, a plurality of acoustic sensors 112 in an exponential spiral array are provided on the positioning device body 111 . The acoustic sensors 112 are directional microphones. Four image capturers 113 distributed in a rectangular array are provided on the positioning device body 111 .

[0034] like Figure 1 As shown, the beneficial effect of this technical solution is that the sound sensor 112 uses a directional microphone and an exponential spiral array. The exponential spiral array has no obvious sound source aliasing phenomenon near the abnormal sound source. Compared with the traditional uniform rectangular array and multi-circular array, it is most effective for locating the abnormal sound source.

[0035] In this embodiment, the top of the base 101 is rotatably connected to a rotating ring 102, and the rotating ring 102 is provided with a first curved plate 201 through the support plate 103. A second curved plate 211 is fixed to the bottom of the positioning device body 111, and the second curved plate 211 is located above the first curved plate 201. A driving motor 202 is fixed to the bottom of the first curved plate 201, and a gear 203 is coaxially provided on the output shaft of the driving motor 202. The gear 203 passes through the first curved plate 201, and the top of the gear 203 is located above the first curved plate 201. A tooth plate 212 that cooperates with the gear 203 is provided at the bottom of the second curved plate 211.

[0036] like Figure 2 As shown, the first curved plate 201 of the present technical solution can rotate on the base 101 with the rotating ring 102 , thereby, the first curved plate 201 can rotate with the positioning device body 111 through the first curved plate 201 .

[0037] like Figure 4 、 Figure 5 As shown, the position of the second arc plate 211 relative to the first arc plate 201 can be adjusted through the cooperation between the gear 203 and the toothed plate 212 .

[0038] In this embodiment, sleeves 221 are fixed on both sides of the bottom of the second curved plate 211, and connecting rods 222 are provided inside each sleeve 221 at the bottom of the second curved plate 211. The bottom ends of the two connecting rods 222 are connected to second anti-slip pads 223, and penetrating cuts 204 are opened on both sides of the top of the first curved plate 201, and each connecting rod 222 passes through one of the cuts 204.

[0039] A small air pump 213 is fixed to the top of the second curved plate 211, and the small air pump 213 is connected to two folding airbags 215 via an air guide tube 214. Each folding airbag 215 is located inside one of the sleeves 221. The bottom of the two folding airbags 215 is provided with a first anti-slip pad 216 that acts on the first curved plate 201. The first anti-slip pad 216 is located above the first curved plate 201. When the folding airbag 215 is unfolded, the first anti-slip pad 216 is close to the top of the first curved plate 201. When the folding airbag 215 is contracted, the first anti-slip pad 216 is separated from the first curved plate 201.

[0040] like Figure 3-Figure 5 As shown, during use, since the vehicle vibration abnormal sound source locating device is placed on the passenger seat, in order to enable the locating device body 111 to measure at multiple angles, the angle of the locating device body 111 can be adjusted by adjusting the positional relationship between the second curved plate 211 and the first curved plate 201. The specific operation process is as follows:

[0041] Initially, the two folding airbags 215 are kept in an inflated state. At this time, the first anti-slip pad 216 at the bottom of the folding airbag 215 will abut against the top of the first curved plate 201, which can limit the position relationship of the second curved plate 211 relative to the first curved plate 201; and the second curved plate 211 can be moved toward a position away from the first curved plate 201, so that the second anti-slip pad 223 abuts against the bottom of the first curved plate 201, further improving the fixing effect of limiting the second curved plate 211 relative to the first curved plate 201, and the position of the positioning device body 111 can be constrained by fixing the second curved plate 211 on the first curved plate 201.

[0042] When the angle of the positioning device body 111 needs to be adjusted, the two folded air bags 215 can be deflated through the small air pump 213, so that the first anti-slip pad 216 and the second anti-slip pad 223 will not act on the first curved plate 201, so that the second curved plate 211 can move relative to the first curved plate 201. At this time, the two sleeves 221 are attached to the top of the first curved plate 201, and the second curved plate 211 can slide relative to the first curved plate 201 under the cooperation of the connecting rod 222 and the cutout 204, and at this time The gear 203 is meshed with the tooth plate 212. When the angle of the positioning device body 111 needs to be adjusted, the drive motor 202 can be turned on to drive the gear 203 to rotate, and the tooth plate 212 can be used to drive the second curved plate 211 to rotate relative to the first curved plate 201. During this process, the second curved plate 211 can rotate synchronously with the positioning device body 111 to adjust the angle. After the angle adjustment is completed, the drive motor 202 can be turned off, and the two folding airbags 215 can be inflated to limit the rotation of the second curved plate 211.

[0043] When the drive motor 202 is turned off to inflate the two folding airbags 215, the two first anti-slip pads 216 will first stick to the top of the first curved plate 201, and then the gear 203 will separate from the tooth plate 212, which can reduce the probability of the second curved plate 211 and the positioning device body 111 rotating and resetting due to the separation of the gear 203 and the tooth plate 212.

[0044] By adjusting the orientation of the positioning device body 111 , the abnormal noise conditions at different positions are measured, thereby determining the position of the abnormal noise.

[0045] Working principle: When using the motor vehicle vibration and noise source locating device to determine the location of abnormal noise in a moving vehicle, the motor vehicle vibration and noise source locating device is placed on the passenger seat. When measuring the location of the abnormal noise, the locating device body 111 can collect graphic information of various locations in the motor vehicle through the image capturer 113, and use the acoustic sensor 112 in an exponential spiral array thereon to relatively accurately measure the location of the abnormal noise, and then display it on the collected graphic information.

[0046] When the motor vehicle vibration and noise source locating device is in use, when it is necessary to adjust the direction of the positioning device body 111, the gas in the two folded airbags 215 is first released through the small air pump 213 to separate the first anti-slip pad 216 from the first curved plate 201. At this time, the second curved plate 211 will move in the direction close to the first curved plate 201 until the bottom end of the sleeve 221 is attached to the top of the first curved plate 201. At this time, the tooth plate 212 is meshed with the gear 203, and the drive motor 202 is turned on to drive the gear 203 to rotate, so that the second curved plate 211 can rotate the positioning device body 111 by an angle. After the angle is rotated, the drive motor 202 is turned off, and then the two folded airbags 215 are inflated by the small air pump 213. At this time, the folded airbags 215 are attached to the top of the first curved plate 201, limiting the angle between the second curved plate 211 and the positioning device body 111.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle vibration abnormal sound source positioning device, comprising a base (101) and a positioning device body (111), characterized in that: The positioning device body (111) is provided with a plurality of acoustic sensors (112) in an exponential spiral array, wherein the acoustic sensors (112) are directional microphones, and the positioning device body (111) is provided with four image capturers (113) distributed in a rectangular array; The top of the base (101) is rotatably connected to a rotating ring (102), and the rotating ring (102) is provided with a first curved plate (201) via a support plate (103). A second curved plate (211) is fixed to the bottom of the positioning device body (111), and the second curved plate (211) is located above the first curved plate (201).

2. The device for locating abnormal vibration sources of a motor vehicle according to claim 1, characterized in that: A driving motor (202) is fixed to the bottom of the first curved plate (201), a gear (203) is coaxially arranged on the output shaft of the driving motor (202), the gear (203) passes through the first curved plate (201), and the top of the gear (203) is located above the first curved plate (201).

3. The device for locating abnormal vibration sources of a motor vehicle according to claim 2, characterized in that: A toothed plate (212) matching the gear (203) is provided at the bottom of the second arc-shaped plate (211).

4. The device for locating abnormal vibration sources of a motor vehicle according to claim 1, characterized in that: Sleeves (221) are fixed on both sides of the bottom of the second curved plate (211), and connecting rods (222) are provided inside each sleeve (221) at the bottom of the second curved plate (211), and the bottom ends of the two connecting rods (222) are connected to second anti-slip pads (223). Penetrating cutouts (204) are opened on both sides of the top of the first curved plate (201), and each connecting rod (222) passes through one of the cutouts (204).

5. The device for locating abnormal vibration sources of a motor vehicle according to claim 4, characterized in that: A small air pump (213) is fixed on the top of the second curved plate (211), and the small air pump (213) is connected to two folding air bags (215) via an air guide tube (214). Each of the folding air bags (215) is located inside one of the sleeves (221), and a first anti-slip pad (216) is provided at the bottom of each of the two folding air bags (215) to act on the first curved plate (201).

6. The device for locating abnormal vibration sources of a motor vehicle according to claim 5, characterized in that: The first anti-slip pad (216) is located above the first curved plate (201).

7. The vehicle abnormal vibration noise source location device according to claim 6, characterized in that: When the folding airbag (215) is unfolded, the first anti-slip pad (216) is in close contact with the top of the first curved plate (201); when the folding airbag (215) is contracted, the first anti-slip pad (216) is separated from the first curved plate (201).

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