Noise reduction device for automobile accessory air conditioner

Abstract

The utility model discloses an automobile accessory air conditioner noise reduction device, and relates to the technical field of automobile accessory air conditioner noise reduction devices, in particular to an automobile accessory air conditioner noise reduction device which comprises a housing, a fixing base and a supporting base. The side face of the housing is in threaded connection with a stabilizing screw rod, a fixing frame is fixedly installed on the front face of the housing, a dustproof net is fixedly installed on the fixing frame, a fan groove is formed in the housing, a cooling fan is fixedly installed in the fan groove, a baffle plate is fixedly installed on the back face of the housing, and sound insulation cotton is arranged on the housing. A noise reduction box is arranged in the noise reduction layer, a damping mechanism is arranged between the fixed base and the supporting base, the cooling fan is effectively prevented from dust through the arrangement of a dustproof mechanism, hidden dangers are avoided, the overall noise reduction means is increased through the arrangement of a baffle plate and sound insulation cotton, and therefore the noise reduction effect is more thorough and obvious.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning noise reduction devices, in particular to an automobile air-conditioning noise reduction device. Background Art

[0002] Noise is a type of sound that causes people to be irritated or is too loud and harmful to human health. From the perspective of environmental protection: any sound that interferes with people's normal rest, study and work, as well as any sound that interferes with the sound people want to hear, is considered noise.

[0003] Since noise is not good for the human body and it is inevitable to use air conditioning in hot temperatures, excessive noise will affect all aspects of life. The noise of traditional locomotive air-conditioning fans is too loud and there is no effective way to eliminate it. Therefore, a locomotive air-conditioning fan noise reduction device with good noise reduction effect is proposed to solve the above problems.

[0004] A locomotive air-conditioning fan noise reduction device with good noise reduction effect is disclosed in the Chinese utility model patent application disclosure specification CN212332317U. Although the locomotive air-conditioning fan noise reduction device with good noise reduction effect has the advantages of increasing the conduction time of sound and reducing the generation of noise by the shock-absorbing spring, the locomotive air-conditioning fan noise reduction device with good noise reduction effect still has disadvantages: First, a lot of dust will accumulate on the fan of the locomotive air-conditioning fan noise reduction device with good noise reduction effect after long-term use. The increase in dust may often cause damage to the fan, thereby generating noise; Second, the locomotive air-conditioning fan noise reduction device with good noise reduction effect adopts a sound-guiding reflection plate to increase the conduction time of internal noise to effectively reduce noise. In actual use, the means of reducing noise may be too single, and noise cannot be avoided during long-term use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an automobile air-conditioning noise reduction device, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a noise reduction device for auto air conditioners, comprising a cover shell, a fixed base and a supporting base, a noise reduction layer is fixedly installed on the top of the cover shell, the top of the noise reduction layer is fixedly connected to a sound outlet plate, a stabilizing screw is threadedly connected to the side of the cover shell, a fixing frame is fixedly installed on the front of the cover shell, a dustproof net is fixedly installed on the fixing frame, a fan slot is opened on the cover shell, a cooling fan is fixedly installed inside the fan slot, a baffle is fixedly installed on the back of the cover shell, sound insulation cotton is arranged on the cover shell, a noise reduction box is arranged inside the noise reduction layer, and a shock absorbing mechanism is arranged between the fixed base and the supporting base.

[0007] Optionally, the fixed base is fixedly installed on the bottom of the cover shell, a through groove is opened on the back side of the cover shell, and the stabilizing screws are two and symmetrically threadedly connected to the left and right side surfaces of the cover shell.

[0008] Optionally, the fixing frame is rotatably connected with mounting bolts, the cover shell is provided with threaded holes adapted to the mounting bolts, and the fixing frame is fixedly mounted on the front side of the cover shell by the mounting bolts.

[0009] Optionally, the baffle is installed above the through groove on the back side of the cover shell, and the sound insulation cotton is bonded to all surfaces of the through groove on the back side of the cover shell.

[0010] Optionally, the noise reduction box is composed of a sound collecting plate, a connecting rod and a sound guide plate, the sound collecting plate is fixedly installed on the bottom of the noise reduction box, the connecting rod is multiple and fixedly installed on the inner wall of the noise reduction box, the sound guide plate is fixedly connected to the connecting rod and inclined at a certain angle, and a sound outlet is opened on the top of the noise reduction box.

[0011] Optionally, the shock absorbing mechanism includes a mounting plate, a shock absorbing spring, a top lifting plate and a bottom lifting plate, the mounting plate consists of two upper and lower plates, which are respectively fixedly mounted on the bottom of the fixed base and the top of the supporting base, the shock absorbing spring is fixedly mounted between the two mounting plates, a damper is arranged inside the shock absorbing spring, and the top lifting plate and the bottom lifting plate are respectively fixedly mounted on the upper and lower mounting plates.

[0012] Optionally, a slide groove is provided on the top lifting plate, a slide rod is fixedly connected to the bottom lifting plate, the slide rod is slidably connected inside the slide groove, and an end of the slide rod is fixedly connected to a limiting block. Beneficial Effects

[0013] The utility model provides a noise reduction device for an automobile air conditioner, which has the following beneficial effects:

[0014] 1. The auto air conditioning noise reduction device has the effect of increasing the sound conduction time through the setting of the baffle plate. Through the coordinated setting of the baffle plate and the sound insulation cotton, the noise conduction time can be effectively increased and the noise can be isolated during use, thereby greatly reducing the noise and achieving the purpose of improving the use efficiency of the device.

[0015] 2. The auto air conditioning noise reduction device has the effect of convenient installation and removal of the dust fixing frame through the setting of the installation bolts. Through the coordinated setting of the fixing frame and the dustproof net, the dust generated during work can be effectively isolated during use, thereby playing a role in dust removal and dust prevention, and achieving the purpose of reducing noise generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 3 This is a rear view structural diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the noise reduction box of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the shock absorbing mechanism of the utility model.

[0021] In the figure: 1. cover; 2. fixed base; 3. support base; 4. noise reduction layer; 5. sound outlet plate; 6. stabilizing screw; 7. fixed frame; 8. dust net; 9. fan slot; 10. cooling fan; 11. baffle; 12. sound insulation cotton; 13. noise reduction box; 14. sound collecting board; 15. sound outlet; 16. connecting rod; 17. sound guide plate; 18. mounting plate; 19. shock absorbing spring; 20. top lifting plate; 21. bottom lifting plate; 22. slide groove; 23. slide rod; 24. limit block; 25. mounting bolt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example 1

[0023] See also Figures 1 to 5The utility model provides a technical solution: a noise reduction device for an auto air conditioner, comprising a cover shell 1, a fixed base 2 and a supporting base 3. A noise reduction layer 4 is fixedly installed on the top of the cover shell 1. The top of the noise reduction layer 4 is fixedly connected to a sound outlet plate 5. A stabilizing screw 6 is threadedly connected to the side of the cover shell 1. The fixed base 2 is fixedly installed on the bottom of the cover shell 1. A through groove is provided on the back of the cover shell 1. The stabilizing screw 6 is symmetrically threaded on the left and right side surfaces of the cover shell 1. The setting of the stabilizing screw 6 makes the installation of the cover shell 1 more stable and the structure is stable. 1 is fixedly installed on the front of the housing 1, and the fixing frame 7 is rotatably connected with a mounting bolt 25. The housing 1 is provided with a threaded hole adapted to the mounting bolt 25. The fixing frame 7 is fixedly installed on the front of the housing 1 by the mounting bolt 25. The mounting bolt 25 makes it very convenient to install and remove the fixing frame 7. The fixing frame 7 cooperates with the setting of the dustproof net 8 to effectively prevent and remove dust from the cooling fan 10 during use, so as to avoid damage and abnormal noise caused by long-term dust accumulation. The dustproof net 8 is fixedly installed on the fixing frame 7, and the housing 1 A fan slot 9 is opened on the cover 1, and a cooling fan 10 is fixedly installed inside the fan slot 9. A baffle 11 is fixedly installed on the back of the cover 1. Sound insulation cotton 12 is arranged on the cover 1. The baffle 11 is installed above the through slot on the back of the cover 1. The sound insulation cotton 12 is bonded to all surfaces of the through slot on the back of the cover 1. The installation of the baffle 11 allows the noise to be turned back once when it propagates, thereby reducing the noise by increasing the conduction time. The setting of the sound insulation cotton 12 effectively isolates the noise fundamentally. The noise reduction layer 4 is provided with The noise reduction box 13 is composed of a sound collecting plate 14, a connecting rod 16 and a sound guide plate 17. The sound collecting plate 14 is fixedly installed at the bottom of the noise reduction box 13. There are multiple connecting rods 16 and they are fixedly installed on the inner wall of the noise reduction box 13. The sound guide plate 17 is fixedly connected to the connecting rod 16 and tilted at a certain angle. A sound outlet 15 is opened on the top of the noise reduction box 13. The setting of the noise reduction box 13 cooperates with the internal mechanism to conduct the transmitted noise for a second time, so that the propagation path of the noise is increased again, thereby achieving the effect of reducing the noise.

[0024] When using the auto air conditioner noise reduction device, first, when the auto air conditioner is in use, its cooling fan 10 will generate noise. After the noise is generated, it is isolated by the sound insulation cotton 12 on the cover shell 1, and then transmitted upward and returned through the deflector 11, so that the conduction time of the noise inside the cover shell 1 is greatly increased, thereby reducing part of the noise to a certain extent. Then the noise will enter the interior of the noise reduction layer 4, and be transmitted to the interior of the noise reduction box 13 through the sound guide plate 17 at the bottom of the noise reduction box 13. The noise will be returned again through the sound guide plate 17 inside the noise reduction box 13, so that the propagation path of the noise is increased again, thereby reducing the noise, and finally transported to the sound outlet 5 through the sound outlet 15 for discharge. During long-term use, the dustproof net 8 on the fixed frame 7 will effectively prevent dust from damaging the cooling fan 10 due to dust accumulation and generating noise. When the dustproof net 8 needs to be cleaned and replaced, the fixing frame 7 can be removed as a whole by removing the mounting bolts 25. It is very convenient to use and simple to operate. Example 2

[0025] See also Figures 1 to 5 The utility model provides a technical solution: a noise reduction device for an auto air conditioner, comprising a cover shell 1, a fixed base 2 and a supporting base 3, a shock absorbing mechanism is arranged between the fixed base 2 and the supporting base 3, the shock absorbing mechanism comprises a mounting plate 18, a shock absorbing spring 19, a top lifting plate 20 and a bottom lifting plate 21, the mounting plate 18 is composed of two upper and lower pieces, which are respectively fixedly mounted on the bottom of the fixed base 2 and the top of the supporting base 3, the shock absorbing spring 19 is fixedly mounted between the two mounting plates 18, a damper is arranged inside the shock absorbing spring 19, the top lifting plate 20 and the bottom lifting plate 21 are respectively fixedly mounted on the upper and lower mounting plates 18, a slide groove 22 is opened on the top lifting plate 20, a sliding rod 23 is fixedly connected to the bottom lifting plate 21, the sliding rod 23 is slidably connected inside the slide groove 22, and the end of the sliding rod 23 is fixedly connected to the limiting block 24, and the setting of the shock absorbing mechanism can fundamentally reduce the generation of noise through the buffering effect of the device itself.

[0026] When using the auto air conditioning noise reduction device, when the overall noise reduction device is working, the cooling fan 10 will drive the fixed base 2 to produce a certain vibration. At this time, the shock-absorbing spring 19 arranged at the bottom of the fixed base 2 will effectively reduce the shock of the fixed base 2. During the shock-absorbing process, the bottom lifting plate 21 slides inside the slide groove 22 on the top lifting plate 20 through the sliding rod 23, thereby playing an effective supporting and connecting role between the fixed base 2 and the supporting base 3, which is more reliable and practical to use.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A noise reduction device for an automobile air conditioner, comprising a housing (1), a fixing base (2) and a supporting base (3), characterized in that: A noise reduction layer (4) is fixedly installed on the top of the cover shell (1), and the top of the noise reduction layer (4) is fixedly connected to a sound outlet plate (5). A stabilizing screw (6) is threadedly connected to the side of the cover shell (1). A fixing frame (7) is fixedly installed on the front of the cover shell (1), and a dustproof net (8) is fixedly installed on the fixing frame (7). A fan slot (9) is opened on the cover shell (1), and a cooling fan (10) is fixedly installed inside the fan slot (9). A baffle (11) is fixedly installed on the back of the cover shell (1). Sound insulation cotton (12) is arranged on the cover shell (1), and a noise reduction box (13) is arranged inside the noise reduction layer (4). A shock absorbing mechanism is arranged between the fixed base (2) and the supporting base (3).

2. The automobile air conditioning noise reduction device according to claim 1, characterized in that: The fixed base (2) is fixedly mounted on the bottom of the cover shell (1); a through slot is provided on the back of the cover shell (1); and the stabilizing screws (6) are two and symmetrically threadedly connected to the left and right side surfaces of the cover shell (1).

3. The noise reduction device for automobile air conditioner according to claim 1, characterized in that: The fixing frame (7) is rotatably connected with a mounting bolt (25), the cover shell (1) is provided with a threaded hole adapted to the mounting bolt (25), and the fixing frame (7) is fixedly mounted on the front surface of the cover shell (1) by means of the mounting bolt (25).

4. The automobile air conditioning noise reduction device according to claim 1, characterized in that: The baffle plate (11) is installed above the through slot on the back side of the cover shell (1), and the sound insulation cotton (12) is bonded to all surfaces of the through slot on the back side of the cover shell (1).

5. The automobile air conditioning noise reduction device according to claim 1, characterized in that: The noise reduction box (13) is composed of a sound collecting plate (14), a connecting rod (16) and a sound guide plate (17); the sound collecting plate (14) is fixedly mounted on the bottom of the noise reduction box (13); the connecting rod (16) is multiple and fixedly mounted on the inner side wall of the noise reduction box (13); the sound guide plate (17) is fixedly connected to the connecting rod (16) and is arranged obliquely; and a sound outlet (15) is opened on the top of the noise reduction box (13).

6. The automobile air conditioning noise reduction device according to claim 1, characterized in that: The shock absorbing mechanism comprises a mounting plate (18), a shock absorbing spring (19), a top lifting plate (20) and a bottom lifting plate (21); the mounting plate (18) comprises two upper and lower plates respectively fixedly mounted on the bottom of a fixed base (2) and the top of a supporting base (3); the shock absorbing spring (19) is fixedly mounted between the two mounting plates (18); a damper is arranged inside the shock absorbing spring (19); and the top lifting plate (20) and the bottom lifting plate (21) are respectively fixedly mounted on the upper and lower mounting plates (18).

7. The automobile air conditioning noise reduction device according to claim 6, characterized in that: The top lifting plate (20) is provided with a sliding groove (22), and the bottom lifting plate (21) is fixedly connected with a sliding rod (23), the sliding rod (23) is slidably connected inside the sliding groove (22), and the end of the sliding rod (23) is fixedly connected to a limiting block (24).

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