A device for testing the sound insulation performance of automobile interior materials

Abstract

The invention discloses a device for testing the sound insulation performance of automobile interior materials, comprising a box body, a sliding door, a hinge, a spring lock, a mounting plate, a clamping module, a transmission module, a support plate, a loudspeaker and a sound collecting unit. The box body is placed on a platform, and the sliding doors are connected to the two sides of the box body respectively. The two sliding doors are arranged oppositely, one end of the hinge is fixedly connected to the box body, and the end of the hinge away from the box body is fixedly connected to the sliding door. The two hinges are arranged oppositely, and the side of the box body away from the platform is fixedly connected to the spring lock, and the end of the spring lock away from the box body is fixedly connected to the sliding door. The transmission module is connected to the box body, and the transmission module is connected to the mounting plate and the clamping module. The loudspeaker is fixedly connected to the box body, and the end of the mounting plate away from the transmission module is connected to the box body. The support plate is slidably connected to the transmission module, and the sound collecting unit is placed on the side of the support plate away from the transmission module. A computer is connected to the transmission module, the support plate, the loudspeaker and the sound collecting unit.

Description

Technical Field

[0001] The invention relates to the technical field of sound insulation performance testing devices, in particular to a sound insulation performance testing device for automobile interior decoration materials. Background Art

[0002] Noise has a huge impact on people, so it is necessary to reduce the impact of noise. Various sound insulation materials have been produced. Different materials have different sound insulation properties, which cannot be accurately distinguished by ears alone. Sound insulation performance testing equipment is needed to test the sound insulation performance of materials.

[0003] In the prior art, many sound insulation performance testing devices manually install and disassemble the materials to be tested, and the clamping time of the test materials is long, time-consuming and labor-intensive, and very inconvenient. It is necessary to set up a sound insulation performance testing device that can automatically clamp to make the operation more convenient. Summary of the invention

[0004] The purpose of the present invention is to provide a device for testing the sound insulation performance of automobile interior materials to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A device for testing the sound insulation performance of automobile interior materials comprises a box, a sliding door, a hinge, a spring lock, a mounting plate, a clamping module, a transmission module, a support plate, a loudspeaker and a sound collecting unit, wherein the box is placed on a platform, and the sliding doors are connected to both sides of the box respectively, and the two sliding doors are arranged oppositely, one end of the hinge is fixedly connected to the box, and the end of the hinge away from the box is fixedly connected to the sliding door, the two hinges are arranged oppositely, a side of the box away from the platform is fixedly connected to the spring lock, and an end of the spring lock away from the box is fixedly connected to the sliding door, the transmission module is connected to the box, the transmission module is connected to the mounting plate and the clamping module, the loudspeaker is fixedly connected to the box, and one end of the mounting plate away from the transmission module is connected to the box, the support plate is slidably connected to the transmission module, a sound collecting unit is placed on a side of the support plate away from the transmission module, and a computer is connected to the transmission module, the support plate, the loudspeaker and the sound collecting unit.

[0006] Furthermore, the box body includes an outer shell, a motor box, foot pads, a fixed block and a guide column. The outer shell is connected to a spring lock, a motor box is arranged at the bottom of the outer shell, a speaker is connected to a side of the outer shell close to the transmission module, a plurality of foot pads are arranged at the bottom of the outer shell, and a fixed block is arranged on a side of the outer shell away from the motor box. The motor box is fixedly connected to the transmission module, the motor box is connected to a hinge, the foot pads are placed on a platform, the two sides of the fixed block are arranged relatively to each other, the fixed block is fixedly connected to the guide column, and the guide column is slidably connected to the mounting plate; the guide column is used to prevent the mounting plate from tilting during movement, and the foot pads are used to support the outer shell and maintain balance to prevent the motor box from deformation.

[0007] Furthermore, the mounting plate is provided with a countersunk groove, a guide hole and an avoidance groove. The countersunk groove is provided on one side of the mounting plate, and guide holes are provided on both sides of the mounting plate respectively. One end of the guide column passes through the guide hole, and the guide columns are slidably connected with each other. An avoidance groove is provided at the bottom of the mounting plate, and the avoidance groove is adapted to the transmission module, and the mounting plate is connected to the transmission module; the countersunk groove is convenient for placing materials to be tested, and the avoidance groove prevents interference with the transmission system.

[0008] Furthermore, the clamping module includes a pressing plate, a connecting block, a connecting rod and a fixed rod. Connecting blocks are provided at both ends of one side of the pressing plate. The two connecting blocks are arranged opposite to each other. A through hole is provided on the connecting block. The connecting rod is provided with a convex shaft diffracting inwardly. The convex shaft on the connecting rod and the hole of the connecting block are rotatably connected. The two ends of the fixed rod are respectively fixedly connected to the connecting rod, and the fixed rod is fixedly connected to the transmission module; the pressing plate rotates on the connecting rod through the connecting block, and the pressing plate angle can be automatically corrected according to the pressure, so that the pressing plate can be kept level with the mounting plate, so that the tested material is evenly stressed to prevent it from falling during testing.

[0009] Furthermore, the transmission module includes a base, a clamping module, a guide rail and a hydraulic module, the base is fixedly connected to the motor box, the base is connected to the guide rail on one side away from the motor box, the guide rail is fixed to the base, the two sides of the base are respectively connected to the guide rails, the two guide rails are placed opposite to each other, the guide rail is connected to the clamping module on one side away from the base, the clamping module is connected to the hydraulic module, one end of the clamping module is fixedly connected to the mounting plate, the longitudinal section of the clamping module is equal to the longitudinal section of the avoidance groove, and the end of the clamping module away from the mounting plate is fixedly connected to the fixing rod; the transmission module is moved by the stator and the mover through the electromagnetic field, can automatically adjust the distance, drive multiple movers to move, and realize automatic clamping of the test material through the hydraulic module.

[0010] Furthermore, the clamping module includes a mover, a push block, a fixed plate and a movable plate, one side of the mover is fixedly connected to the fixed plate, the fixed plate is connected to the mounting plate, the mounting plate is fixed on the fixed plate, the mover is slidably connected to the movable plate at one end away from the fixed plate, the mover is connected to the hydraulic module at one end close to the movable plate, a push block is provided on the movable plate at one end away from the fixed plate, the push block is connected to the hydraulic module at one end away from the movable plate, and the mover is connected to the guide rail at one end away from the fixed plate; the mover moves on the base through the change of the electromagnetic field to realize linear motion, thereby driving the mounting plate to move, thereby facilitating the clamping of the test material.

[0011] Furthermore, the push block is provided with an inclined surface and a groove, the groove is provided on the inclined surface, the push block is fixedly connected to the movable plate, and the groove is connected to the hydraulic module; the groove is for connecting the hydraulic module and can also improve the stability of the connection, and the inclined surface enables the hydraulic module to drive the movable plate to move.

[0012] Furthermore, the guide rail includes a first guide rail and a second guide rail, the second guide rail is slidably connected to the first guide rail, the second guide rail is fixed to the mover on the side away from the first guide rail, and the first guide rail is fixed to the base on the side away from the second guide rail; the first guide rail is fixed to the base, and the second guide rail is convenient to move on the first guide rail.

[0013] Furthermore, the hydraulic module includes a hydraulic pump, an end head and a boss. The hydraulic pump is fixedly connected to the end head, and the side of the hydraulic pump is fixedly connected to the mover. The end head is provided with a boss, and the boss is slidably connected to the groove; the end head drives the push block to move through the boss to control the clamping of the test material.

[0014] Furthermore, the support plate structure is similar to the clamping module, including a mover and a guide rail, and is moved by computer control. The sound collecting unit is installed on the mover to collect sounds at different distances.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention is provided with two sound collection chambers, which can be used as blank control groups to reduce experimental errors and facilitate comparison of the sound insulation effects of different materials; the transmission module is driven by a linear motor, the transmission module is connected to a support plate and a mounting plate, and the movement of the support plate and the mounting plate is controlled by a calculator, so that the sound insulation effects at different distances can be tested; a clamping module is provided on the transmission module, which can be automatically clamped through a hydraulic system transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a general assembly diagram of the sound insulation performance testing device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the sound insulation performance testing device of the present invention;

[0019] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 yes Figure 2 A cross-sectional view at point B;

[0021] Figure 5 It is a schematic diagram of the box structure of the present invention;

[0022] Figure 6 It is a schematic diagram of the mounting plate structure of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the compression module of the present invention;

[0024] Figure 8 It is a schematic diagram of the transmission module structure of the present invention;

[0025] Fig. 9 It is a structural schematic diagram of the clamping module and the hydraulic module of the present invention;

[0026] In the figure: 1. box body; 11. shell; 12. motor box; 13. foot pad; 14. fixed block; 15. guide column; 2. sliding door; 3. hinge; 4. spring lock; 5. mounting plate; 51. sink groove; 52. guide hole; 53. avoidance groove; 6. clamping module; 61. pressing plate; 62. connecting block; 63. connecting rod; 64. fixing rod; 7. transmission module; 71. base; 72. clamping module; 721. mover; 722. push block; 7221. inclined surface; 7222. groove; 723. fixed plate; 724. moving plate; 73. guide rail; 731. first guide rail; 732. second guide rail; 74. hydraulic module; 741. hydraulic pump; 742. end; 743. boss; 8. support plate; 9. speaker; 10. sound collection unit. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention provides a technical solution:

[0029] like Figure 1 , Figure 2 , Figure 3As shown, a device for testing the sound insulation performance of automobile interior materials comprises a box body 1, a sliding door 2, a hinge 3, a spring lock 4, a mounting plate 5, a clamping module 6, a transmission module 7, a support plate 8, a speaker 9 and a sound collecting unit 10. The box body 1 is placed on a platform, and the sliding doors 2 are connected to both sides of the box body 1 respectively. The two sliding doors 2 are arranged oppositely, one end of the hinge 3 is fixedly connected to the box body 1, and the end of the hinge 3 away from the box body 1 is fixedly connected to the sliding door 2. The two hinges 3 are arranged oppositely, and the box body 1 is fixedly connected to the spring lock 4 on one side away from the platform, and the spring lock 4 is fixedly connected to the sliding door 2 on one end away from the box body 1. The transmission module 7 is connected to the box body 1, and the transmission module 7 is connected to the mounting plate 5 and the clamping module 6. The speaker 9 is fixedly connected to the box body 1, and the end of the mounting plate 5 away from the transmission module 7 is connected to the box body 1. The support plate 8 is slidably connected to the transmission module 7, and the sound collecting unit 10 is placed on the side of the support plate 8 away from the transmission module 7. The computer connects the transmission module 7, the support plate 8, the speaker 9 and the sound collecting unit 10.

[0030] like Figure 5 As shown, the box body 1 includes an outer shell 11, a motor box 12, a foot pad 13, a fixing block 14 and a guide column 15, the outer shell 11 is connected to a spring lock 4, the motor box 12 is arranged at the bottom of the outer shell 11, the outer shell 11 is connected to the speaker 9 on one side close to the transmission module 7, a plurality of foot pads 13 are arranged at the bottom of the outer shell 11, and a fixing block 14 is arranged on the side of the outer shell 11 away from the motor box 12, the motor box 12 is fixedly connected to the transmission module 7, the motor box 12 is connected to the hinge 3, the foot pad 13 is placed on a platform, the two sides of the fixing block 14 are arranged opposite to each other, the fixing block 14 is fixedly connected to the guide column 15, and the guide column 15 is slidably connected to the mounting plate 5; in order to facilitate fixation, the outer shell 11 is made of metal material, the motor box 12 is welded and fixed to the outer shell 11, the foot pad 13 is connected to the outer shell 11 by bolts, so that it is convenient to adjust the level on different platforms, and the fixing block 14 is welded to the outer shell 11 to ensure stability.

[0031] like Figure 6 As shown, a countersunk groove 51, a guide hole 52 and an avoidance groove 53 are provided on the mounting plate 5. The countersunk groove 51 is provided on one side of the mounting plate 5, and guide holes 52 are provided on both sides of the mounting plate 5 respectively. One end of the guide column 15 passes through the guide hole 52, and the guide columns 15 are slidably connected with the guide columns 15. The avoidance groove 53 is provided at the bottom of the mounting plate 5, and the avoidance groove 53 is adapted to the transmission module 7, and the mounting plate 5 is connected to the transmission module 7; the mounting plate 5 is provided with two threaded holes and connected to the transmission module 7 with screws.

[0032] like Figure 7As shown, the clamping module 6 includes a pressing plate 61, a connecting block 62, a connecting rod 63 and a fixing rod 64. The connecting blocks 62 are arranged at both ends of one side of the pressing plate 61. The two connecting blocks 62 are arranged opposite to each other. A through hole is arranged on the connecting block 62. The connecting rod 63 is provided with an inwardly diffracting convex shaft. The convex shaft on the connecting rod 63 is rotatably connected to the hole of the connecting block 62. The connecting rod 63 is fixedly connected to the connecting rod 63 at both ends of the fixing rod 64. The fixing rod 64 is fixedly connected to the transmission module 7. The connecting block 62 is welded to the pressing plate 61, and the connecting block 62 can rotate on the connecting rod 63. The two connecting rods 63 are welded to the fixing rod 64.

[0033] like Figure 8 As shown, the transmission module 7 includes a base 71, a clamping module 72, a guide rail 73 and a hydraulic module 74, the base 71 is fixedly connected to the motor box 12, the base 71 is connected to the guide rail 73 on one side away from the motor box 12, the guide rail 73 is fixed to the base 71, both sides of the base 71 are respectively connected to the guide rails 73, the two guide rails 73 are placed opposite to each other, the guide rail 73 is connected to the clamping module 72 on one side away from the base 71, the clamping module 72 is connected to the hydraulic module 74, one end of the clamping module 72 is fixedly connected to the mounting plate 5, the longitudinal section of the clamping module 72 is equal to the longitudinal section of the avoidance groove 53, and the end of the clamping module 72 away from the mounting plate 5 is fixedly connected to the fixing rod 64; the base 71 is fixed to the motor box 12 with screws, and the guide rail 73 is also fixed to the base 71 and the clamping module 72 with screws.

[0034] like Fig. 9 As shown, the clamping module 72 includes a mover 721, a push block 722, a fixed plate 723 and a movable plate 724, wherein one side of the mover 721 is fixedly connected to the fixed plate 723, the fixed plate 723 is connected to the mounting plate 5, the mounting plate 5 is fixed on the fixed plate 723, the mover 721 is slidably connected to the movable plate 724 at one end away from the fixed plate 723, the mover 721 is connected to the hydraulic module 74 at one side close to the movable plate 724, the movable plate 724 is provided with a push block 722 at one side away from the fixed plate 723, the push block 722 is connected to the hydraulic module 74 at one side away from the movable plate 724, and the mover 721 is connected to the guide rail 73 at one side away from the fixed plate 723; to prevent the movable plate 724 from sliding off the mover 721, limit blocks are connected to both ends of the mover 721 close to the guide rail 73, or limit blocks are installed at both ends of the movable plate 724, so as to limit the movable plate 724 from moving on the mover 721, so that the movable plate 724 can only make linear motion toward the mounting plate 5.

[0035] like Figure 8 , Fig. 9 As shown, the push block 722 is provided with an inclined surface 7221 and a groove 7222 . The groove 7222 is provided on the inclined surface 7221 . The push block 722 is fixedly connected to the moving plate 724 . The groove 7222 is connected to the hydraulic module 74 . The inclined surface 7221 is fixed to the moving plate 724 .

[0036] like Figure 8 As shown, the guide rail 73 includes a first guide rail 731 and a second guide rail 732, the second guide rail 732 is slidably connected to the first guide rail 731, the second guide rail 732 is fixed to the mover 721 at one side away from the first guide rail 731, and the first guide rail 731 is fixed to the base 71 at one side away from the second guide rail 732; the first guide rail 731 and the second guide rail 732 are both fixed to the base 71 and the mover 721 with screws.

[0037] like Figure 8 , Fig. 9 As shown, the hydraulic module 74 includes a hydraulic pump 741, an end 742 and a boss 743. The hydraulic pump 741 is fixedly connected to the end 742, and the side of the hydraulic pump 741 is fixedly connected to the mover 721. The end 742 is provided with a boss 743, and the boss 743 is slidably connected to the groove 7222; the boss 743 is first matched with the groove 7222, and then the hydraulic pump 741 is fixed to the mover 721 with screws.

[0038] The working principle of the present invention is as follows: the base of the transmission module is the stator, and the mover of the clamping module performs linear motion through the force of the electromagnetic field. The electromagnetic field is controlled by a computer to make the mover move on the stator, and the movement of multiple movers can be controlled to realize the movement of the mounting plate and the support plate; the groove of the push block cooperates with the boss of the end head to ensure that the push block can only perform offline motion on the end head, and the hydraulic pump controls the extension and retraction of the end head to push the push block to perform linear motion toward the mounting plate.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for testing the sound insulation performance of automobile interior materials, characterized in that: The sound insulation performance testing device comprises a box (1), a sliding door (2), a hinge (3), a spring lock (4), a mounting plate (5), a clamping module (6), a transmission module (7), a support plate (8), a speaker (9) and a sound collecting unit (10); the box (1) is placed on a platform; both sides of the box (1) are respectively connected to the sliding doors (2); the two sliding doors (2) are arranged opposite to each other; one end of the hinge (3) is fixedly connected to the box (1); the end of the hinge (3) away from the box (1) is fixedly connected to the sliding door (2); the two hinges (3) are arranged opposite to each other; the side of the box (1) away from the platform is fixedly connected to the spring lock (4), the end of the spring lock (4) away from the box (1) is fixedly connected to the sliding door (2), the transmission module (7) is connected to the box (1), the transmission module (7) is connected to the mounting plate (5) and the clamping module (6), the speaker (9) is fixedly connected to the box (1), the end of the mounting plate (5) away from the transmission module (7) is connected to the box (1), the support plate (8) is slidably connected to the transmission module (7), the side of the support plate (8) away from the transmission module (7) is provided with a sound collecting unit (10), and the computer is connected to the transmission module (7), the support plate (8), the speaker (9) and the sound collecting unit (10); The housing (1) comprises a shell (11), a motor box (12), a foot pad (13), a fixing block (14) and a guide column (15); the shell (11) is connected to a spring lock (4); the motor box (12) is arranged at the bottom of the shell (11); the side of the shell (11) close to the transmission module (7) is connected to a speaker (9); a plurality of foot pads (13) are arranged at the bottom of the shell (11); a fixing block (14) is arranged at the side of the shell (11) away from the motor box (12); the motor box (12) is fixedly connected to the transmission module (7); the motor box (12) is connected to a hinge (3); the foot pad (13) is placed on a platform; two sides of the fixing block (14) are arranged opposite to each other; the fixing block (14) is fixedly connected to the guide column (15); and the guide column (15) is slidably connected to the mounting plate (5); The mounting plate (5) is provided with a sink groove (51), a guide hole (52) and an avoidance groove (53); the sink groove (51) is provided on one side of the mounting plate (5); the guide holes (52) are provided on both sides of the mounting plate (5); one end of the guide column (15) passes through the guide hole (52); the guide columns (15) are slidably connected to the guide columns (15); the avoidance groove (53) is provided at the bottom of the mounting plate (5); the avoidance groove (53) is adapted to the transmission module (7); and the mounting plate (5) is connected to the transmission module (7).

2. The device for testing the sound insulation performance of automobile interior materials according to claim 1, characterized in that: The clamping module (6) comprises a pressing plate (61), a connecting block (62), a connecting rod (63) and a fixing rod (64); connecting blocks (62) are arranged at both ends of one side of the pressing plate (61); the two connecting blocks (62) are arranged opposite to each other; a through hole is arranged on the connecting block (62); a convex shaft diffracting inward is arranged on the connecting rod (63); the convex shaft on the connecting rod (63) and the hole of the connecting block (62) are rotatably connected; the connecting rod (63) is fixedly connected at both ends of the fixing rod (64) to the connecting rod (63); and the fixing rod (64) is fixedly connected to the transmission module (7).

3. The device for testing the sound insulation performance of automobile interior materials according to claim 2, characterized in that: The transmission module (7) comprises a base (71), a clamping module (72), a guide rail (73) and a hydraulic module (74); the base (71) is fixedly connected to the motor box (12); the side of the base (71) away from the motor box (12) is connected to the guide rail (73); the guide rail (73) is fixed to the base (71); both sides of the base (71) are respectively connected to the guide rails (73); the two guide rails (73) are arranged opposite to each other; the side of the guide rail (73) away from the base (71) is connected to the clamping module (72); the clamping module (72) is connected to the hydraulic module (74); one end of the clamping module (72) is fixedly connected to the mounting plate (5); the longitudinal section of the clamping module (72) is equal to the longitudinal section of the avoidance groove (53); and one end of the clamping module (72) away from the mounting plate (5) is fixedly connected to the fixing rod (64).

4. The device for testing the sound insulation performance of automobile interior materials according to claim 3, characterized in that: The clamping module (72) comprises a mover (721), a push block (722), a fixed plate (723) and a movable plate (724); one side of the mover (721) is fixedly connected to the fixed plate (723); the fixed plate (723) is connected to the mounting plate (5); the mounting plate (5) is fixed on the fixed plate (723); one end of the mover (721) away from the fixed plate (723) is slidably connected to the movable plate (724); one side of the mover (721) close to the movable plate (724) is connected to the hydraulic module (74); a push block (722) is arranged on a side of the movable plate (724) away from the fixed plate (723); one side of the push block (722) away from the movable plate (724) is connected to the hydraulic module (74); and one side of the mover (721) away from the fixed plate (723) is connected to the guide rail (73).

5. The device for testing the sound insulation performance of automobile interior materials according to claim 4, characterized in that: The push block (722) is provided with an inclined surface (7221) and a groove (7222), the groove (7222) is provided on the inclined surface (7221), the push block (722) is fixedly connected to the moving plate (724), and the groove (7222) is connected to the hydraulic module (74).

6. The device for testing the sound insulation performance of automobile interior materials according to claim 5, characterized in that: The guide rail (73) comprises a first guide rail (731) and a second guide rail (732), wherein the second guide rail (732) is slidably connected to the first guide rail (731), the second guide rail (732) is fixed to the mover (721) at a side away from the first guide rail (731), and the first guide rail (731) is fixed to the base (71) at a side away from the second guide rail (732).

7. The device for testing the sound insulation performance of automobile interior materials according to claim 6, characterized in that: The hydraulic module (74) comprises a hydraulic pump (741), an end head (742) and a boss (743); the hydraulic pump (741) is fixedly connected to the end head (742); the side of the hydraulic pump (741) is fixedly connected to the mover (721); the end head (742) is provided with a boss (743); and the boss (743) is slidably connected to the groove (7222).

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