Microphone fixing device for vehicle noise detection

Abstract

The utility model provides a microphone fixing device for vehicle noise detection, which relates to the field of vehicle noise detection and comprises a base detachably connected to a vehicle seat, and the base is connected with a supporting frame capable of ascending and descending in the vertical direction. The upper end of the supporting frame is detachably connected with two mounting seats located on the two sides of a headrest of the vehicle seat respectively, the two mounting seats can be movably adjusted along the front-back position and the left-right position of the headrest, and the front ends of the two mounting seats are connected with microphones used for detecting noise in the vehicle. The microphone fixing device for vehicle noise detection can be suitable for noise clamp detection of various different vehicle types, accurate positioning is not needed during installation, and the actual position of the microphone can be easily adjusted according to actual conditions in the later period, so that the installation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle noise detection, in particular to a microphone fixing device for vehicle noise detection. Background Art

[0002] With the improvement of living standards, consumers pay more and more attention to the NVH performance of vehicles. Therefore, it is necessary to detect the noise inside the vehicle, especially the noise at the driver and co-pilot seats.

[0003] At present, a fixing rod extending in the front-to-back direction is usually fixed on both sides of the headrest of the main driver or front passenger seat by means of tape, and a corresponding microphone is installed at the front section of the fixing rod. The positions of the two microphones are to simulate the left and right ears of the passengers in the main and front passenger seats. The microphones are connected to an external dedicated noise detection device to detect the noise conditions at the corresponding positions in the car, so as to detect whether the sound insulation effect of the vehicle meets the requirements.

[0004] In the above-mentioned prior art, the microphone is fixed by adhesive tape, which has a weak structure and is difficult to adjust once the position is fixed. High position accuracy is required during installation, which increases the difficulty of installation. In addition, this method is not universal. For the detection of different models, it is necessary to replace the corresponding fixing rods and other additional fixing parts, which increases the detection cost. Utility Model Content

[0005] In order to overcome at least one defect in the above-mentioned prior art, the utility model provides a microphone fixing device for vehicle noise detection, which can be applicable to noise detection of various different types of vehicles. It does not require accurate positioning during installation, and the actual position of the microphone can be easily adjusted according to actual conditions at a later stage, thereby reducing the difficulty of installation.

[0006] The utility model provides a microphone fixing device for detecting vehicle noise, comprising a base detachably connected to a vehicle seat, the base being connected to a support frame which can be lifted and lowered in a vertical direction, the upper end of the support frame being detachably connected to two mounting seats which are respectively located at two sides of a headrest of the vehicle seat, and the two mounting seats can be moved and adjusted along the front and rear and left and right positions of the headrest, and the front ends of the two mounting seats are both connected to microphones for detecting noise in the vehicle.

[0007] Compared with the prior art, the microphone fixing device for vehicle noise detection of the utility model has the following advantages:

[0008] In the microphone fixing device for vehicle noise detection of the utility model, a special base is fixed on the seat, and a support frame with height adjustment is arranged on the base, the top of the support frame is connected to two mounting seats for mounting microphones on the left and right sides, and the two mounting seats can be moved and adjusted along the front and back, left and right positions of the headrest, and the multi-dimensional adjustment of the microphone is achieved by adjusting the height of the support frame and the front and back, left and right positions of the mounting seats, so that the accuracy of the positions of the two microphones after installation is fully guaranteed, and thus the real noise conditions at the corresponding positions in the vehicle are more accurately reflected; on the other hand, the position of the microphone can be adjusted in multiple dimensions, so that it can be better applicable to the detection of various different types of vehicles, has strong versatility, and saves detection costs.

[0009] As an improvement, the base is located at the rear side of the headrest, and a fixing strap for fixing it to the headrest is provided on the base; the fixing strap is an integral structure or two split structures, when the fixing strap is one, it is elastic and wound into a ring structure, and when the fixing strap is two, the free ends of the two fixing straps are detachably connected by Velcro.

[0010] Further improved, the base includes two symmetrically arranged L-shaped brackets, the vertical rods of the two L-shaped brackets are close to each other and detachably connected together, the horizontal rods of the two L-shaped brackets are located in the same straight line and extend along the left and right directions of the headrest, and the fixing belt is connected to at least one of the L-shaped brackets; the support frame is connected to the horizontal rods of the two L-shaped brackets, and the two support frames can be moved and adjusted in the up and down and left and right directions on the two horizontal rods.

[0011] Further improvement, a fixing block is provided on the horizontal rod, the fixing block is located on one side of the horizontal rod, the support frame is located on the other side of the horizontal rod, the support frame is provided with a first waist-shaped through hole extending along its length direction, two connecting bolts for connecting the support frame to the fixing block are passed through the first waist-shaped through hole, and the two connecting bolts are respectively located on the upper and lower sides of the horizontal rod.

[0012] As a further improvement, a U-shaped sliding groove is provided on a side of the fixing block close to the horizontal rod, and the fixing block is slidably fitted on the outside of the horizontal rod through the U-shaped sliding groove.

[0013] Further improved, the top of the support frame is connected to a vertically arranged connecting rod, the mounting seat is a horizontally arranged mounting plate extending along the front-to-rear direction of the headrest, the mounting plate is provided with a second waist-shaped through hole extending along its length direction, the upper end of the connecting rod passes through the second waist-shaped through hole, and the upper end of the connecting rod is connected to a locking nut.

[0014] As a further improvement, a connecting block is provided on one side of the two vertical rods away from the fixing belt, and two connecting through holes are provided on the two connecting blocks, which are arranged at an interval up and down and pass through in the left and right directions. Bolt assemblies for connecting and fixing the two connecting holes are passed through the two groups of connecting through holes spaced up and down.

[0015] Further improvement, on the side walls where the two vertical rods are abutted, the upper and lower ends of one of the side walls are respectively provided with a first positioning hole and a first positioning block, and the upper and lower ends of the other side wall are respectively provided with a second positioning block plugged into the first positioning hole, and a second positioning hole for plugging the first positioning block.

[0016] Other improved features and advantages of the utility model will be described in the subsequent specific embodiments, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a microphone fixing device for vehicle noise detection of the utility model;

[0018] Figure 2 Another structural view of the microphone fixing device for vehicle noise detection of the utility model from another angle;

[0019] Figure 3 It is a partial structural diagram of the microphone fixing device for vehicle noise detection of the utility model;

[0020] Figure 4 for Figure 3 The structure diagram is enlarged at the X in the middle;

[0021] Figure 5 It is a partial structural diagram of the L-shaped bracket in the utility model.

[0022] Description of reference numerals:

[0023] 1. Support frame; 2. Mounting base; 3. Microphone; 4. Fixing belt; 5. L-shaped bracket; 5.1. Vertical rod; 5.2. Horizontal rod; 5.3. Diagonal support rod; 6. Fixing block; 7. First waist-shaped through hole; 8. Connecting bolt; 9. U-shaped slide; 10. Connecting rod; 11. Second waist-shaped through hole; 12. Locking nut; 13. Connecting block; 14. Connecting through hole; 15. Bolt assembly; 16. First positioning socket; 17. First positioning socket. DETAILED DESCRIPTION

[0024] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0025] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "front and back", "left and right", "up and down", "front end", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only for the convenience of description and distinction, and do not have a specific meaning.

[0027] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figure 1 to Figure 5 As shown, an embodiment of the present application discloses a microphone fixing device for vehicle noise detection, comprising a base detachably connected to a vehicle seat, a support frame 1 which can be raised and lowered vertically is connected to the base, and an upper end of the support frame 1 is detachably connected to two mounting seats 2 which are respectively located on both sides of a headrest of the vehicle seat, and the two mounting seats 2 can be moved and adjusted along the front and rear and left and right positions of the headrest, and the front ends of the two mounting seats 2 are connected to microphones 3 for detecting noise inside the vehicle, and the specific positions of the two microphones 3 are to simulate the left and right ear positions of the main driver or the co-driver, and the noise conditions at the corresponding positions are detected by the microphones 3 to detect whether the vehicle sound insulation conditions meet the standards.

[0029] Specifically, in the present embodiment, the base is located at the rear side of the headrest, and a fixing strap 4 for fixing it to the headrest is provided on the base; the fixing strap 4 here includes two split straps, and the free ends of the two straps are detachably connected by Velcro, and the two straps are wrapped around the outside of the headrest to achieve the connection and fixation between the base and the headrest; and this Velcro fixing method can be applied to the fixing of headrests of different models, and has strong versatility.

[0030] In some other embodiments, the fixing belt 4 can also be an integral structure, which is a ring-shaped structure and is elastic. When the base is fixed, it is directly fixed to the outside of the headrest through the ring-shaped fixing belt 4. The fixing belt 4 with this structure can also be used to fix the headrests of many different types of vehicles.

[0031] In this embodiment, for more details, see the attached Figure 2 The base part includes two symmetrically arranged L-shaped brackets 5, the vertical rods 5.1 of the two L-shaped brackets 5 are close to each other and detachably connected together, the horizontal rods 5.2 of the two L-shaped brackets 5 are located in the same straight line and extend along the left and right directions of the headrest, and the fixing belt 4 is connected to at least one L-shaped bracket 5; preferably, the two ends of the fixing belt 4 are respectively connected to the two vertical rods 5.1 to ensure that the base is installed stably and the position is centered and controllable. In addition, the horizontal rods 5.2 of the two L-shaped brackets 5 are connected to the support frame 1, and the two support frames 1 can be moved and adjusted along the up-down and left-right directions on the two horizontal rods 5.2 to achieve accurate adjustment of the positions of the left and right microphones 3.

[0032] In addition, see Appendix Figure 3 Or 5, in order to ensure the structural strength in this embodiment, a diagonal brace rod 5.3 is arranged between the vertical rod 5.1 and the horizontal rod 5.2 of each L-shaped bracket 5, which effectively improves the structural strength of the entire base.

[0033] In addition, see Appendix Figure 3 The support frame 1 is adjustable left and right on the horizontal rod 5.2, which means that a fixing block 6 is provided on the horizontal rod 5.2, the fixing block 6 is located on one side of the horizontal rod 5.2, and the support frame 1 is located on the other side of the horizontal rod 5.2. The support frame 1 is provided with a first waist-shaped through hole 7 extending along its length direction, and two connecting bolts 8 for connecting the support frame 1 to the fixing block 6 are penetrated in the first waist-shaped through hole 7, and the two connecting bolts 8 are respectively located on the upper and lower sides of the horizontal rod 5.2; in this embodiment, only the connection between the L-shaped bracket 5 and the support frame 1 on the left side of the headrest is used as an example to explain, and the support frame 1 can be adjusted left and right and up and down by loosening the two connecting bolts 8, which is very convenient, and the vertical position of the microphone 3 is indirectly adjusted by adjusting the height of the support frame 1. In this structure, the left and right movement of the support frame 1 is used to drive the movement of the mounting seat at its top.

[0034] Attached Figure 3 As shown in , in order to make the fixed block 6 slide left and right more smoothly, a U-shaped sliding groove 9 is opened on the side of the fixed block 6 close to the horizontal rod 5.2, and the fixed block 6 is slidably fitted on the outside of the horizontal rod 5.2 through the U-shaped sliding groove 9.

[0035] In this embodiment, the support frame 1 is a vertically arranged plate-like structure, and a vertically arranged connecting rod 10 is connected to the top of the structure; in addition, the mounting seat 2 is a horizontally arranged mounting plate extending along the front-to-back direction of the headrest, and the mounting plate, the support plate, and the horizontal rod 5.2 are all vertically arranged. A second waist-shaped through hole 11 extending along its length direction is provided on the mounting plate, and the upper end of the connecting rod 10 passes through the second waist-shaped through hole 11, and an external thread is provided on the outer side of the upper end of the screw, and the screw passes through the upper end of the mounting seat 2 and is connected to a locking nut 12; similarly, when it is necessary to adjust the front-to-back position of the mounting seat 2, just loosen the corresponding locking nut 12, and tighten the locking nut 12 again after the position is adjusted, which is very convenient.

[0036] On the other hand, see Appendix Figure 5 In this embodiment, the vertical rods 5.1 of the two L-shaped brackets 5 are detachably connected. A connecting block 13 is provided on one side of the two vertical rods 5.1 away from the fixing belt 4. The two connecting blocks 13 are provided with two connecting through holes 14 arranged at intervals from top to bottom and extending in the left-right direction. The two groups of connecting through holes 14 spaced from top to bottom are penetrated with bolt assemblies 15 for connecting and fixing the two connecting holes. Specifically, the bolt assembly 15 includes a screw and a nut, and in this embodiment, in order to facilitate disassembly and assembly, the two screws are symmetrically arranged, such as Figure 3 The two screws shown are marked as the first screw and the second screw, and the two connecting blocks 13 are marked as the first connecting block 13 and the second connecting block 13 along the left-right direction. The first screw passes through the connecting through hole 14 above the first connecting block 13 until it passes through the connecting through hole 14 above the second connecting block 13, and a corresponding nut is provided on the outside of the first screw and at one end of the second connecting block 13; similarly, one end of the second screw passes through the connecting through hole 14 below the second connecting block 13, and then passes through the connecting through hole 14 below the first connecting block 13, and a corresponding nut is provided on its outer end.

[0037] In addition, on the side wall where the two vertical rods are in contact, see the attached Figure 3 As shown, the upper and lower ends of the side wall of the vertical rod 5.1 on the left are respectively provided with a first positioning hole 16 and a first positioning block 17, and the upper and lower ends of the other side wall (the side wall of the vertical rod 5.1 on the right) are respectively provided with a second positioning block plugged into the first positioning hole 16, and a second positioning hole for the first positioning block 17 to be plugged into. The two L-shaped brackets 5 are more firmly connected through the positioning structures staggered on the left and right, and the front and rear positions are not easily offset, thereby ensuring the stability of the position of the microphone 3 during the test after installation, and ensuring that the test results of the left and right positions are more accurate.

[0038] In the description of the present application, the description with reference to the terms "present embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradicting each other.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A microphone fixing device for vehicle noise detection, characterized in that: The invention comprises a base detachably connected to a vehicle seat, the base being connected to a support frame (1) which can be raised and lowered in the vertical direction, the upper end of the support frame (1) being detachably connected to two mounting seats (2) respectively located on both sides of a headrest of the vehicle seat, and the two mounting seats (2) can be moved and adjusted along the front and rear and left and right positions of the headrest, and the front ends of the two mounting seats (2) are connected to microphones (3) for detecting noise inside the vehicle.

2. The microphone fixing device for vehicle noise detection according to claim 1, characterized in that: The base is located at the rear side of the headrest, and a fixing belt (4) for fixing the base to the headrest is provided on the base; the fixing belt (4) is an integral structure or two split structures; when the fixing belt (4) is one, it is elastic and wound into a ring structure; when the fixing belt (4) is two, the free ends of the two fixing belts (4) are detachably connected by Velcro.

3. The microphone fixing device for vehicle noise detection according to claim 2, characterized in that: The base comprises two symmetrically arranged L-shaped brackets (5); the vertical rods (5.1) of the two L-shaped brackets (5) are close to each other and detachably connected together; the horizontal rods (5.2) of the two L-shaped brackets (5) are located in the same straight line and extend in the left-right direction of the headrest; the fixing belt (4) is connected to at least one of the L-shaped brackets (5); the horizontal rods (5.2) of the two L-shaped brackets (5) are both connected to the support frame (1), and the two support frames (1) can be moved and adjusted in the up-down and left-right directions on the two horizontal rods (5.2).

4. The microphone fixing device for vehicle noise detection according to claim 3, characterized in that: A fixing block (6) is provided on the horizontal rod (5.2), and the fixing block (6) is located on one side of the horizontal rod (5.2). The support frame (1) is located on the other side of the horizontal rod (5.2). The support frame (1) is provided with a first waist-shaped through hole (7) extending along its length direction. Two connecting bolts (8) for connecting the support frame (1) to the fixing block (6) are passed through the first waist-shaped through hole (7), and the two connecting bolts (8) are respectively located on the upper and lower sides of the horizontal rod (5.2).

5. The microphone fixing device for vehicle noise detection according to claim 4, characterized in that: A U-shaped sliding groove (9) is provided on one side of the fixing block (6) close to the horizontal rod (5.2), and the fixing block (6) is slidably fitted on the outside of the horizontal rod (5.2) through the U-shaped sliding groove (9).

6. The microphone fixing device for vehicle noise detection according to claim 3, characterized in that: The top of the support frame (1) is connected to a vertically arranged connecting rod (10); the mounting seat (2) is a horizontally arranged mounting plate extending in the front-rear direction of the headrest; a second waist-shaped through hole (11) extending in the length direction thereof is provided on the mounting plate; the upper end of the connecting rod (10) passes through the second waist-shaped through hole (11), and the upper end of the connecting rod (10) is connected to a locking nut (12).

7. The microphone fixing device for vehicle noise detection according to claim 3, characterized in that: A connecting block (13) is provided on one side of the two vertical rods (5.1) away from the fixing belt (4), and the two connecting blocks (13) are each provided with two connecting through holes (14) spaced apart from each other in the upper and lower directions and extending in the left and right directions, and a bolt assembly (15) for connecting and fixing the two connecting through holes is passed through the two groups of connecting through holes (14) spaced apart from each other in the upper and lower directions.

8. The microphone fixing device for vehicle noise detection according to claim 7, characterized in that: On the side walls where the two vertical rods (5.1) are in contact, a first positioning plug hole (16) and a first positioning plug block (17) are respectively provided at the upper and lower ends of one of the side walls, and a second positioning plug block plugged into the first positioning plug hole (16) and a second positioning plug hole for plugging the first positioning plug block (17) are respectively provided at the upper and lower ends of the other side wall.

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