An in-vehicle noise sensor fixing device

Abstract

The application belongs to the technical field of tire detection, and discloses a vehicle interior noise sensor fixing device, which comprises a three-jaw suction cup, and a connecting frame is fixedly installed on the front face of the three-jaw suction cup. The three-jaw suction cup and the connecting frame are arranged, the three-jaw suction cup is adsorbed and fixed on the automobile window glass to form a core installation fulcrum, and then the connecting frame connected with the three-jaw suction cup builds a suspended support structure to provide a stable installation carrier for the noise sensor. In the whole installation process, the automobile seat headrest slide rod does not need to be used as a support, and the vehicle interior and the vehicle body structure do not need to be punched, bonded or subjected to other modification operations. In this way, the rigid dependence of the traditional fixing device on the seat headrest structure is broken, the integrated headrest vehicle model with no exposed headrest slide rod is adapted, the range of applicable vehicle models of the device is greatly widened, the sensor is conveniently and non-destructively installed, and the stability of the support structure in the test process is ensured.

Description

Technical Field

[0001] This invention belongs to the field of tire testing technology, specifically a mounting device for an in-vehicle noise sensor. Background Technology

[0002] In-vehicle noise testing is a crucial step in the research and testing of automotive NVH performance. The way noise sensors are installed and fixed directly affects the accuracy of the test data and the versatility of the testing operation.

[0003] Currently, the installation of in-vehicle noise sensors mainly relies on the headrest structure of car seats. However, existing mainstream mounting methods have significant limitations. One method involves directly using elastic or non-elastic binding devices to fix the sensors to both sides of the headrest. This method only restricts the sensors to fixed positions on both sides of the headrest and cannot meet the requirements of noise testing methods that require distance between sensors. Another method involves connecting and locking the sensor to the headrest slide rod via a mechanical connection device. This method requires the headrest slide rod as the mounting fulcrum. However, many new car models now adopt a sporty integrated headrest design, which does not include a headrest slide rod, making this mounting method unusable and severely limiting its applicability. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide an in-vehicle noise sensor mounting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an in-vehicle noise sensor mounting device, comprising a three-claw suction cup, a connecting frame fixedly mounted on the front of the three-claw suction cup, a mounting block fixedly connected to the front end of the connecting frame, a round rod fixedly connected to the right side of the mounting block, a ball head fixedly connected to the right end of the round rod, a ball seat movably sleeved on the outer surface of the ball head, and a fixed base fixedly connected to the right side of the ball seat.

[0006] As a preferred embodiment of the present invention, the three-claw suction cup comprises three suction cup units, which are evenly distributed circumferentially, and the adsorption working surfaces of the three suction cup units are on the same plane.

[0007] As a preferred embodiment of the present invention, there are three connecting frames, and all three connecting frames are made of carbon fiber tubing.

[0008] As a preferred embodiment of the present invention, the fixed base has a sliding groove inside, and the fixed base is made of five-series aluminum-magnesium alloy.

[0009] As a preferred embodiment of the present invention, a microphone mounting bracket is movably connected to both the top and bottom of the right side of the fixed base, and the microphone mounting bracket has mounting holes inside.

[0010] As a preferred embodiment of the present invention, bolts are movably fitted at the top and bottom of the inner surface of the slide groove, and the right end of the bolts penetrates through the microphone mounting bracket and extends to the outside of the microphone mounting bracket.

[0011] As a preferred embodiment of the present invention, the outer surface of the bolt is threaded with a nut, and the outer surface of the nut is movably connected to the outer surface of the microphone mounting bracket.

[0012] The beneficial effects of this invention are as follows: 1. This invention uses a three-claw suction cup and a connecting frame. The three-claw suction cup is used to adhere to and fix the sensor to the car window glass to form a core mounting point. The connecting frame connected to the three-claw suction cup then builds a suspended support structure, providing a stable mounting carrier for the noise sensor. The entire installation process does not require the use of the car seat headrest slide bar as a support, nor does it require drilling, gluing, or other modifications to the vehicle interior or body structure. This eliminates the rigid dependence of traditional fixing devices on the seat headrest structure, achieving the goals of adapting to integrated headrest models without exposed headrest slide bars, significantly expanding the range of applicable vehicle models, enabling convenient and non-destructive installation of the sensor, and ensuring the stability of the support structure during testing.

[0013] 2. This invention, by setting up a ball head, a fixed base, bolts, and nuts, allows the ball head to slide linearly along the outer surface of the fixed base due to the design of the fixed base. This enables flexible adjustment of the installation spacing between multiple microphones. After the spacing is adjusted to the target value required for testing, the microphone mounting bracket is locked and fixed in the corresponding position of the fixed base by tightening the bolts and nuts. This solves the limitation of traditional fixing devices that cannot adjust the microphone installation spacing, and achieves the purpose of adapting to the different requirements of microphone spacing for different testing standards and R&D projects, ensuring precise and controllable microphone installation positions, and improving the accuracy of in-vehicle noise test data and the efficiency of testing operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the three-claw suction cup of the present invention; Figure 3 This is a schematic diagram of the structure of the fixed base of the present invention; Figure 4 This is a structural schematic diagram of the side of the fixed base of the present invention; Figure 5 This is a schematic diagram of the microphone mounting bracket of the present invention.

[0015] In the diagram: 1. Three-claw suction cup; 2. Connecting bracket; 3. Mounting block; 4. Round rod; 5. Ball head; 6. Ball seat; 7. Fixed base; 8. Microphone mounting bracket; 9. Mounting hole; 10. Slide groove; 11. Bolt; 12. Nut. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1 to 5 As shown, this embodiment of the invention provides a vehicle in-vehicle noise sensor mounting device, including a three-claw suction cup 1. A connecting frame 2 is fixedly mounted on the front of the three-claw suction cup 1. A mounting block 3 is fixedly connected to the front end of the connecting frame 2. A round rod 4 is fixedly connected to the right side of the mounting block 3. A ball head 5 is fixedly connected to the right end of the round rod 4. A ball seat 6 is movably sleeved on the outer surface of the ball head 5. A fixing base 7 is fixedly connected to the right side of the ball seat 6.

[0018] The ball seat 6 has a locking bolt inside, which locks the rotation angle of the ball head 5 and is used to adjust the installation angle of the fixed base 7. A complete fixed support structure for the in-vehicle noise sensor is built by the three-claw suction cup 1. The sensor is suspended and fixed with the car window glass as the installation fulcrum, completely eliminating the dependence of the traditional device on the installation of the seat headrest slide rod. At the same time, the ball head 5 and the ball seat 6 enable the universal adjustment of the installation angle of the fixed base 7, which can adapt to the in-vehicle noise testing installation requirements of different models.

[0019] The three-claw suction cup 1 includes three suction cup units, which are evenly distributed in a circle, and the adsorption working surfaces of the three suction cup units are on the same plane.

[0020] By using three suction cup units that are evenly distributed in a circle and whose adsorption working surfaces are on the same plane, the adsorption force of the suction cups is evenly distributed, which greatly improves the load-bearing capacity and anti-slip stability of the device, and avoids the problem of the device loosening or falling off during vehicle driving tests.

[0021] There are three connecting frames 2, and all three connecting frames 2 are made of carbon fiber tubing.

[0022] By using three connecting frames 2 made of carbon fiber tubing, the overall weight of the device is significantly reduced, the adsorption load of the three-claw suction cup 1 is lessened, and the tensile strength and structural rigidity of the support structure are fully guaranteed, thereby improving the structural stability and deformation resistance of the device's suspended support.

[0023] The fixed base 7 has a sliding groove 10 inside, and the fixed base 7 is made of five-series aluminum-magnesium alloy.

[0024] By using a fixed base 7 made of five-series aluminum-magnesium alloy, the device is lightweight and cost-effective, while the slide groove 10 provides a stable linear adjustment carrier for adjusting the microphone mounting distance, adapting to the different requirements of different test standards for sensor mounting distance.

[0025] The top and bottom of the right side of the fixed base 7 are movably connected to the microphone mounting bracket 8, and the microphone mounting bracket 8 has mounting holes 9 inside.

[0026] The microphone mounting bracket 8 can stably mount and fix the noise microphone for testing, providing a suitable mounting point for the sensor.

[0027] Bolts 11 are movably fitted onto the top and bottom of the inner surface of the slide 10. The right end of the bolts 11 passes through the microphone mounting bracket 8 and extends to the outside of the microphone mounting bracket 8.

[0028] The design of bolt 11 allows the microphone mounting bracket 8 to slide linearly along the groove with the bolt.

[0029] The bolt 11 has a nut 12 threaded onto its outer surface, and the outer surface of the nut 12 is movably connected to the outer surface of the microphone mounting bracket 8.

[0030] By tightening the nut 12, the microphone mounting bracket 8 is securely locked onto the fixed base 7, effectively preventing sensor position displacement caused by vehicle vibration and airflow disturbance during the test, thus ensuring the stability and accuracy of noise data acquisition.

[0031] Working principle and usage process: First, select the installation point of the rear window glass that meets the vehicle interior noise test specifications. Then, flatly attach the three-claw suction cup 1 to the pre-treated window glass to make the three-claw suction cup 1 form a stable negative pressure adsorption state, thereby building a suspended stable support base with the window glass as the fulcrum. Then, loosen the locking bolt of the ball seat 6, adjust the spatial angle of the fixing base 7, and initially calibrate it until the fixing base 7 is parallel to the XZ plane of the vehicle and keeps it in a horizontal state. Then, pre-tighten the locking bolt to complete the initial positioning of the angle.

[0032] One by one, the noise microphones for testing are fixed inside the microphone mounting bracket 8 and locked. Then, according to the microphone spacing parameters required by the test standard and test plan, the microphone mounting bracket 8 is slid along the linear slide rail to precisely adjust the installation spacing between multiple microphones to the target value. After confirming that the spacing is correct, the bolts 11 and nuts 12 are fully tightened to lock the microphone mounting base in the corresponding position of the slide rail, so that subsequent tests can be carried out.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An in-vehicle noise sensor fixing device comprising a three-jaw suction cup (1), characterized in that: A connecting frame (2) is fixedly installed on the front of the three-claw suction cup (1). A mounting block (3) is fixedly connected to the front end of the connecting frame (2). A round rod (4) is fixedly connected to the right side of the mounting block (3). A ball head (5) is fixedly connected to the right end of the round rod (4). A ball seat (6) is movably sleeved on the outer surface of the ball head (5). A fixed base (7) is fixedly connected to the right side of the ball seat (6).

2. An in-vehicle noise sensor fixing device according to claim 1, characterized by: The three-claw suction cup (1) includes three suction cup units, which are evenly distributed in a circle, and the adsorption working surfaces of the three suction cup units are on the same plane.

3. An in-vehicle noise sensor fixing device according to claim 1, characterized in that: There are three connecting frames (2), and all three connecting frames (2) are made of carbon fiber tubing.

4. The in-vehicle noise sensor fixation device of claim 1, wherein: The fixed base (7) has a sliding groove (10) inside, and the fixed base (7) is made of five-series aluminum-magnesium alloy.

5. The in-vehicle noise sensor mounting apparatus of claim 1, wherein: Microphone mounting brackets (8) are movably connected to the top and bottom of the right side of the fixed base (7), and mounting holes (9) are provided inside the microphone mounting brackets (8).

6. An in-vehicle noise sensor fixing device according to claim 4, characterized by: Bolts (11) are movably fitted at the top and bottom of the inner surface of the slide (10). The right end of the bolt (11) passes through the microphone mounting bracket (8) and extends to the outside of the microphone mounting bracket (8).

7. An in-vehicle noise sensor fixing device according to claim 6, characterized in that: The outer surface of the bolt (11) is threaded with a nut (12), and the outer surface of the nut (12) is movably connected to the outer surface of the microphone mounting bracket (8).

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