Automobile power amplifier device with noise reduction function

Abstract

The utility model discloses an automobile power amplifier device with a noise reduction function, which relates to the technical field of power amplifiers and comprises a substrate and an upper soundproof cover, and the top of the substrate is fixedly connected with a lower soundproof cover. The clamping plate at the bottom of the upper sound-proof cover is inserted into the inner wall of the clamping groove in the top of the lower sound-proof cover, the bottom of the upper sound-proof cover is tightly attached to the top of the lower sound-proof cover, after insertion is completed, the mounting bolt is screwed into the inner wall of the mounting hole in the clamping plate, the upper sound-proof cover and the lower sound-proof cover are fixed, and the purpose of rapid mounting is achieved; after installation is completed, due to the fact that a closed space is formed between the upper sound-proof cover and the lower sound-proof cover, the situation that noise is diffused when the power amplifier device body works can be effectively prevented, and the purpose of primary noise reduction is achieved. The inner walls of the upper sound-proof cover and the lower sound-proof cover are bonded with the first sound-absorbing cotton and the second sound-absorbing cotton respectively. Countless air holes in the first sound-absorbing cotton and the second sound-absorbing cotton are used for buffering and absorbing noise.

Description

Technical Field

[0001] The utility model relates to the technical field of power amplifiers, in particular to a car power amplifier device with a noise reduction function. Background Art

[0002] Power amplifier, referred to as "PA", refers to an amplifier that can generate maximum power output to drive a load (such as a speaker) under given distortion conditions. The power amplifier plays a pivotal role of "organization and coordination" in the entire audio system, and to some extent dominates whether the entire system can provide good sound quality output. Therefore, it is used in automobiles to enhance the communication function of communication vehicles.

[0003] For example, the publication number 202122179831.8 discloses a power amplifier with an efficient heat dissipation function, including a main body and electrical components. A built-in box for storing the electrical components is installed inside the main body, and built-in box air vents are provided on both sides of the built-in box. The main body is provided with main body air vents. The top of the main body is connected to a top cover via a hinge, and a fan is installed on the inner bottom of the top cover. The utility model starts the fan to cool the heat generated by the electrical components. At this time, the cooled air is discharged to the outside through the built-in box air vents and the main body air vents, thereby cooling the interior of the power amplifier and increasing the cooling efficiency of the power amplifier.

[0004] The above device works by activating a fan to cool the heat generated by the electrical components. The cooled air is then discharged to the outside through the built-in box vents and the main body vents, thereby cooling the interior of the power amplifier. However, the device tends to generate a lot of noise during operation, which can easily cause noise pollution and damage the driver's hearing. To this end, we provide a car power amplifier device with a noise reduction function. Utility Model Content

[0005] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0006] The purpose of the present utility model is to provide a car power amplifier device with a noise reduction function to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a car amplifier device with a noise reduction function, comprising a substrate and an upper sound insulation cover, the top of the substrate is fixedly connected to a lower sound insulation cover, the amplifier device body is placed at the bottom of the inner side of the lower sound insulation cover, and the front and rear ends of the top of the lower sound insulation cover are provided with a clamping groove, the inner wall of the lower sound insulation cover is bonded with No. 1 sound-absorbing cotton, the front and rear ends of the bottom of the upper sound insulation cover are fixedly connected with a clamping plate, the size of the clamping plate is adapted to the clamping groove, both sides of the surface of the clamping plate are provided with mounting holes, and the mounting hole and the clamping groove are fixedly connected by mounting bolts, and the inner wall of the upper sound insulation cover is bonded with No. 2 sound-absorbing cotton.

[0008] Furthermore, fans are fixedly installed on both sides of the inner top of the upper sound insulation cover, and a group of through holes are opened on the top of the upper sound insulation cover.

[0009] Furthermore, threaded holes are provided on all four sides of the base plate, and there are four threaded holes.

[0010] Furthermore, the inner walls on both sides of the lower sound insulation cover are threadedly connected with fastening bolts, one end of the fastening bolt is movably connected to a bearing located inside the lower sound insulation cover, and one end of the bearing is fixedly connected to a clamping plate.

[0011] Furthermore, a protective pad is bonded to the inner side of the splint, and one end of the protective pad is arc-shaped.

[0012] Furthermore, both sides of the bottom of the inner cavity of the lower soundproof cover are provided with sliding grooves, the bottom of the clamping plate is fixedly connected to a slider, and the bottom of the slider is slidably connected to the inner wall of the sliding groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model inserts the clamping plate at the bottom of the upper sound insulation cover into the inner wall of the clamping groove at the top of the lower sound insulation cover, and makes the bottom of the upper sound insulation cover fit tightly with the top of the lower sound insulation cover. After the insertion is completed, the mounting bolts are turned into the inner wall of the mounting hole on the clamping plate to fix the upper and lower sound insulation covers, thereby achieving the purpose of quick installation. After the installation is completed, due to the formation of a closed space between the upper and lower sound insulation covers, the noise diffusion when the power amplifier device is working can be effectively blocked, thereby achieving the purpose of primary noise reduction. At the same time, because the inner walls of the upper and lower sound insulation covers are respectively bonded with No. 1 sound-absorbing cotton and No. 2 sound-absorbing cotton, the countless air pores inside the No. 1 sound-absorbing cotton and No. 2 sound-absorbing cotton are used to buffer and absorb the noise, thereby achieving the purpose of secondary noise reduction and greatly improving the noise reduction effect.

[0015] 2. The utility model rotates the bearing so that the surface and one end of the bearing rotate in the inner wall of the lower sound insulation cover and the inner ring of the bearing respectively. The thrust generated by the rotation drives the splint to move inward until the inner side of the splint is tightly fitted with one side of the power amplifier body, thereby limiting and fixing the power amplifier body, reducing the jitter of the power amplifier body during operation, improving the stability of the power amplifier body during operation, and playing a certain role in noise reduction.

[0016] 3. The utility model starts the fan, which generates airflow during rotation and accelerates the air flow rate in the inner cavities of the upper and lower sound insulation covers, so that external air enters the inner cavities of the upper and lower sound insulation covers through the through holes, realizes air replacement, and achieves the purpose of efficient heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0018] Figure 2 This is a top view of the lower soundproof cover of the present utility model;

[0019] Figure 3 This is a bottom view of the upper sound insulation cover of the present utility model;

[0020] Figure 4 It is an enlarged view of point A of the present utility model.

[0021] In the figure: 1. Baseboard; 2. Upper sound insulation cover; 3. Lower sound insulation cover; 4. Fastening bolts; 5. Bearing; 6. Clamp; 7. No. 1 sound-absorbing cotton; 8. Power amplifier body; 9. Snap-in slot; 10. Fan; 11. No. 2 sound-absorbing cotton; 12. Snap-in plate. DETAILED DESCRIPTION

[0022] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0023] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0024] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0025] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0026] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] The utility model provides Figures 1-4 The shown embodiment shows a car amplifier device with a noise reduction function, comprising a substrate 1 and an upper sound insulation cover 2, wherein a lower sound insulation cover 3 is fixedly connected to the top of the substrate 1, an amplifier body 8 is placed at the bottom of the inner side of the lower sound insulation cover 3, and a clamping groove 9 is provided at the front and rear ends of the top of the lower sound insulation cover 3, and a No. 1 sound-absorbing cotton 7 is bonded to the inner wall of the lower sound insulation cover 3. A clamping plate 12 is fixedly connected to the front and rear ends of the bottom of the upper sound insulation cover 2, the size of the clamping plate 12 is adapted to the clamping groove 9, mounting holes are provided on both sides of the surface of the clamping plate 12, and the mounting holes are fixedly connected to the clamping groove 9 by mounting bolts, and No. 2 sound-absorbing cotton 11 is bonded to the inner wall of the upper sound insulation cover 2.

[0028] Insert the clamping plate 12 at the bottom of the upper sound insulation cover 2 into the inner wall of the clamping groove 9 at the top of the lower sound insulation cover 3, and make the bottom of the upper sound insulation cover 2 fit tightly with the top of the lower sound insulation cover 3. After the insertion is completed, turn the mounting bolts into the inner wall of the mounting hole on the clamping plate 12 to fix the upper sound insulation cover 2 and the lower sound insulation cover 3 to achieve the purpose of quick installation. After the installation is completed, due to the formation of a closed space between the upper sound insulation cover 2 and the lower sound insulation cover 3, the noise diffusion when the power amplifier device body 8 is working can be effectively blocked, thereby achieving the purpose of primary noise reduction. At the same time, because the inner walls of the upper sound insulation cover 2 and the lower sound insulation cover 3 are respectively bonded with No. 1 sound-absorbing cotton 7 and No. 2 sound-absorbing cotton 11, the countless air pores inside the No. 1 sound-absorbing cotton 7 and No. 2 sound-absorbing cotton 11 are used to buffer and absorb noise, thereby achieving the purpose of secondary noise reduction and greatly improving the noise reduction effect.

[0029] See Figure 3 As shown, fans 10 are fixedly mounted on both sides of the inner top of the upper soundproof cover 2 , and a group of through holes are opened on the top of the upper soundproof cover 2 .

[0030] When the fan 10 is started, the fan 10 generates airflow during rotation and accelerates the air flow rate in the inner cavities of the upper sound insulation cover 2 and the lower sound insulation cover 3, so that the external air enters the inner cavities of the upper sound insulation cover 2 and the lower sound insulation cover 3 through the through holes, realizing air replacement and achieving the purpose of efficient heat dissipation.

[0031] See Figure 1 As shown, four threaded holes are provided on all four sides of the base plate 1 .

[0032] By setting the threaded holes and cooperating with the external bolts, the base plate 1 can be quickly disassembled and assembled at a designated position, thereby improving the efficiency of disassembly and assembly.

[0033] See Figure 2 As shown, the inner walls on both sides of the lower sound insulation cover 3 are threadedly connected with fastening bolts 4, one end of the fastening bolts 4 is movably connected to the inner side of the lower sound insulation cover 3 with a bearing 5, and one end of the bearing 5 is fixedly connected to a clamping plate 6.

[0034] The bearing 5 is rotated so that the surface and one end of the bearing 5 rotate in the inner wall of the lower sound insulation cover 3 and the inner ring of the bearing 5 respectively. The thrust generated by the rotation drives the clamping plate 6 to move inward until the inner side of the clamping plate 6 is tightly fitted with one side of the power amplifier device body 8, thereby limiting and fixing the power amplifier device body 8, reducing the jitter of the power amplifier device body 8 during operation, improving the stability of the power amplifier device body 8 during operation, and playing a certain role in noise reduction.

[0035] See Figure 2 As shown, a protective pad is bonded to the inner side of the splint 6, and one end of the protective pad is arc-shaped.

[0036] The provision of the anti-slip pad increases the friction force at the connection between one side of the power amplifier body 8 and the clamping plate 6, further improving the stability during fixation.

[0037] See Figure 2 As shown, both sides of the bottom of the inner cavity of the lower soundproof cover 3 are provided with sliding grooves, the bottom of the clamping plate 6 is fixedly connected with a slider, and the bottom of the slider is slidably connected to the inner wall of the sliding groove.

[0038] By setting the sliding groove, the slider is limited to assist the splint 6 to move laterally, thereby preventing the splint 6 from rotating and becoming unable to move.

[0039] In summary, when using the automobile amplifier device with noise reduction function, first place the substrate 1 in the specified position, and with the cooperation of the external bolts, the substrate 1 can be fixed. After the fixing is completed, the amplifier body 8 is placed on the inner side of the lower sound insulation cover 3. After the placement is completed, rotate the bearing 5 so that the surface and one end of the bearing 5 rotate in the inner wall of the lower sound insulation cover 3 and the inner ring of the bearing 5 respectively. The thrust generated by the rotation drives the splint 6 to move inward until the inner side of the splint 6 is tightly fitted with one side of the amplifier body 8, and the amplifier body 8 is limited and fixed, thereby reducing the jitter of the amplifier body 8 during operation, improving the stability of the amplifier body 8 during operation, and playing a certain role in noise reduction. Then, the clamping plate 12 at the bottom of the upper sound insulation cover 2 is inserted into the inner wall of the clamping groove 9 at the top of the lower sound insulation cover 3, and the bottom of the upper sound insulation cover 2 is tightly fitted with the top of the lower sound insulation cover 3. After the insertion is completed, the installation The mounting bolts are turned into the inner walls of the mounting holes on the clamping plate 12 to fix the upper sound insulation cover 2 and the lower sound insulation cover 3 to achieve the purpose of quick installation. After the installation is completed, a closed space is formed between the upper sound insulation cover 2 and the lower sound insulation cover 3, which can effectively block the noise from spreading when the power amplifier device body 8 is working, thereby achieving the purpose of primary noise reduction. At the same time, since the inner walls of the upper sound insulation cover 2 and the lower sound insulation cover 3 are respectively bonded with No. 1 sound-absorbing cotton 7 and No. 2 sound-absorbing cotton 11, the countless air pores inside the No. 1 sound-absorbing cotton 7 and No. 2 sound-absorbing cotton 11 are used to buffer and absorb noise, thereby achieving the purpose of secondary noise reduction and greatly improving the noise reduction effect. Finally, when heat dissipation is needed, the fan 10 is started. The fan 10 will generate airflow during rotation and accelerate the air flow rate in the inner cavities of the upper sound insulation cover 2 and the lower sound insulation cover 3, so that the external air enters the inner cavities of the upper sound insulation cover 2 and the lower sound insulation cover 3 through the through holes, realizing air replacement and achieving the purpose of efficient heat dissipation.

[0040] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A car power amplifier device with noise reduction function, characterized by: The invention comprises a base plate (1) and an upper soundproof cover (2), wherein the top of the base plate (1) is fixedly connected to a lower soundproof cover (3), a power amplifier body (8) is placed at the bottom of the inner side of the lower soundproof cover (3), and the front end and the rear end of the top of the lower soundproof cover (3) are provided with a clamping groove (9), the inner wall of the lower soundproof cover (3) is bonded with a No. 1 sound-absorbing cotton (7), the front end and the rear end of the bottom of the upper soundproof cover (2) are fixedly connected to a clamping plate (12), the size of the clamping plate (12) is adapted to the clamping groove (9), both sides of the surface of the clamping plate (12) are provided with mounting holes, and the mounting holes and the clamping groove (9) are fixedly connected by mounting bolts, and the inner wall of the upper soundproof cover (2) is bonded with a No. 2 sound-absorbing cotton (11).

2. The car amplifier device with noise reduction function according to claim 1, characterized in that: Fans (10) are fixedly mounted on both sides of the inner top of the upper soundproof cover (2), and a group of through holes are opened on the top of the upper soundproof cover (2).

3. The car amplifier device with noise reduction function according to claim 1, characterized in that: The base plate (1) is provided with threaded holes on all four sides, and the number of the threaded holes is four.

4. The car amplifier device with noise reduction function according to claim 1, characterized in that: The inner walls on both sides of the lower soundproof cover (3) are threadedly connected with fastening bolts (4), one end of the fastening bolts (4) is movably connected to a bearing (5) located inside the lower soundproof cover (3), and one end of the bearing (5) is fixedly connected to a clamping plate (6).

5. The car amplifier device with noise reduction function according to claim 4, characterized in that: A protective pad is bonded to the inner side of the splint (6), and one end of the protective pad is arc-shaped.

6. The car amplifier device with noise reduction function according to claim 4, characterized in that: Slide grooves are provided on both sides of the bottom of the inner cavity of the lower soundproof cover (3); a slider is fixedly connected to the bottom of the clamping plate (6), and the bottom of the slider is slidably connected to the inner wall of the slide groove.

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