Vehicle-mounted dust-free loudspeaker

By designing dustproof, cleaning, collection, transmission and limiting components in the on-board dust-free speakers, the problems of dustproof net blockage and inconvenience in maintenance are solved, and the speakers are effectively cleaned and simplified.

CN119653294APending Publication Date: 2025-03-18XIAMEN GREAT SOUND TECH
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Patent Information

Application Number
CN202411805397.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The existing vehicle dust-free speakers cannot facilitate cleaning of the dust-proof net, which makes the dust-proof net easily blocked and inconvenient maintenance.

Method used

A vehicle-mounted dust-free speaker is designed, including dustproof components, cleaning components, collection components, transmission components and limiting components. The torsion spring drives the rolling roller to rotate, the cleaning brush drives the dustproof net to clean, and the gears drive the speaker assembly to move for easy maintenance.

Benefits of technology

It realizes effective cleaning of dustproof nets, avoids clogging, simplifies the speaker maintenance process, and improves the maintenance of equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a vehicle-mounted dust-free loudspeaker, and belongs to the technical field of loudspeakers, the vehicle-mounted dust-free loudspeaker comprises a shell and a dustproof assembly installed in the shell, and the dustproof assembly is used for carrying out dustproof protection on the loudspeaker and forming a dust-free space in the shell; the cleaning assembly is used for cleaning and protecting the dustproof assembly; the collecting assembly is used for collecting dust generated by cleaning; the second transmission assembly is used for driving the third transmission assembly to move; and the third transmission assembly is used for moving the loudspeaker assembly and moving the loudspeaker assembly out of the shell for maintenance. By arranging the dustproof net, dustproof protection can be performed on the loudspeaker body, by arranging the torsion spring, the dustproof net is loosened, the torsion spring contracts to drive the winding roller to rotate on the shell, then the dustproof net can be driven to move, and when the winding roller rotates, the cleaning brush can be driven to rotate through the first transmission assembly; and the dust screen can be cleaned when the cleaning brush rotates, so that the dust screen is not easy to block.
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Description

Technical Field

[0001] The invention relates to a loudspeaker, in particular to a vehicle-mounted dust-free loudspeaker, and belongs to the technical field of loudspeakers. Background Art

[0002] A speaker is a transducer device that converts electrical signals into sound signals. The performance of the speaker has a great influence on the sound quality. There are many types of speakers. According to their transducer principles, they can be divided into electric, electrostatic, electromagnetic, piezoelectric and other types. The latter two are mostly used in rural cable radio networks. According to the frequency range, they can be divided into low-frequency speakers, medium-frequency speakers and high-frequency speakers.

[0003] However, in actual use, the existing dust-free car speakers cannot be easily cleaned on the dust screen, which causes the dust screen to be easily blocked and affects the sound effect. In addition, the speakers cannot be easily slid out of the shell for maintenance, which makes maintenance inconvenient. Summary of the invention

[0004] The main purpose of the present invention is to solve the problem that the dustproof net cannot be cleaned conveniently and the speaker cannot be slid out of the shell for maintenance, and to provide a dust-free speaker mounted on a vehicle.

[0005] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] A dust-free speaker mounted on a vehicle comprises a housing and a dust-proof component installed inside the housing, which is used to protect the speaker from dust and to form a dust-free space inside the housing;

[0007] A cleaning component, used for cleaning and protecting the dustproof component;

[0008] A collecting component, used for collecting dust generated by cleaning;

[0009] The second transmission assembly is used to drive the third transmission assembly to move;

[0010] a third transmission assembly, used for moving the speaker assembly, and removing the speaker assembly from the housing for maintenance;

[0011] A guide assembly, used for guiding and limiting the speaker assembly;

[0012] The limiting component is used to limit the position of the dustproof component after being pulled.

[0013] Preferably, the dustproof assembly includes a dustproof net, a winding roller, a torsion spring and a limit block. The winding roller is rotatably installed inside the shell, one end of the winding roller is connected to the shell through a torsion spring, the winding roller is connected to one end of the dustproof net, and a limit block is installed on the other end of the dustproof net.

[0014] Preferably, the cleaning assembly includes a cleaning brush and a first transmission assembly, the cleaning brush is rotatably mounted on the shell, the cleaning brush is connected to the winding roller via the first transmission assembly, the first transmission assembly includes a first main pulley, a first belt and a first auxiliary pulley, the first main pulley is mounted on the cleaning brush, the first auxiliary pulley is mounted on the winding roller, and the first main pulley is connected to the first auxiliary pulley via a first belt.

[0015] Preferably, the collecting assembly comprises a collecting box plate, a handle and a collecting box, the collecting box is slidably mounted inside the shell, the collecting box is located below the cleaning brush, a collecting box plate is mounted on the collecting box, a handle is mounted on the collecting box plate, and an anti-slip pad is mounted on the handle.

[0016] Preferably, a slider is installed at the bottom of the collection box, a slide groove cooperating with the slider is provided on the shell, the collection box is a T-shaped slider, and the slide groove is a T-shaped slide groove.

[0017] Preferably, the second transmission assembly includes a second main pulley, a second belt, a second auxiliary pulley and a rotating rod, the rotating rod is rotatably mounted on the shell, the second auxiliary pulley is mounted on the rotating rod, the second main pulley is mounted on the winding roller, and the second main pulley is connected to the second auxiliary pulley via a second belt.

[0018] Preferably, the third transmission assembly includes a gear, a rack and a connecting column, a gear is installed on the rotating rod, a connecting column is installed on one side of the speaker assembly, one end of the connecting column is installed with the rack meshing with the gear, and the speaker assembly is connected to the guide assembly.

[0019] Preferably, the guide assembly includes a guide rod, a guide ring, a first connecting rod and a side block, the shell is equipped with a guide rod, the guide ring is slidably mounted on the guide rod, the side block is mounted on the guide ring, and the side block is connected to the speaker assembly via the first connecting rod.

[0020] Preferably, the speaker assembly includes a connecting frame, a second connecting rod, a connecting ring and a speaker body, one end of the connecting column is connected to one side of the connecting frame, one end of the first connecting rod is connected to the connecting frame, a second connecting rod is installed on the connecting frame, one end of the second connecting rod is connected to the connecting ring, and the speaker body is installed inside the connecting ring.

[0021] Preferably, the limit assembly includes a limit rod, a connecting plate, a spring, a limit ring, a side rod and an insert block. The limit rod is installed on the shell, the limit ring is slidably installed on the limit rod, the side rod is installed on the limit ring, one end of the side rod is connected to the connecting plate, the insert block is installed on the connecting plate, the limit block is provided with a slot that cooperates with the insert block, and the connecting plate is connected to the shell through a spring.

[0022] Beneficial technical effects of the present invention:

[0023] 1. According to the vehicle-mounted dust-free speaker of the present invention, a dustproof net is provided to protect the speaker body from dust. A torsion spring is provided to loosen the dustproof net. The contraction of the torsion spring drives the winding roller to rotate on the shell, thereby driving the dustproof net to move. When the winding roller rotates, the cleaning brush can be driven to rotate through the first transmission assembly. When the cleaning brush rotates, the dustproof net can be cleaned, so that the dustproof net is not easily blocked.

[0024] 2. By setting the gear, when the winding roller rotates, it can drive the gear to rotate through the second transmission assembly. When the gear rotates, the rack is meshed with the gear, which can drive the speaker body to move. The speaker body can be removed from the shell to facilitate the staff to repair the speaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention;

[0027] Figure 3 It is a schematic diagram of the limit block structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the plug structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the gear structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the cleaning brush structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the rack structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the dustproof net of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the collection box of the present invention;

[0034] Fig.10 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0035] Fig.11 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0036] In the figure: 1. shell; 2. collection box plate; 21. handle; 22. collection box; 23. slider; 3. dust net; 31. wind-up roller; 32. torsion spring; 33. limit block; 4. cleaning brush; 41. first main pulley; 42. first belt; 43. first auxiliary pulley; 5. second main pulley; 51. second belt; 52. second auxiliary pulley; 53. rotating rod; 6. gear; 61. rack; 62. connecting column; 7. guide rod; 71. guide ring; 72. first connecting rod; 73. side block; 8. connecting frame; 81. second connecting rod; 82. connecting ring; 83. speaker body; 9. limit rod; 91. connecting plate; 92. spring; 93. limit ring; 94. side rod; 95. plug block. DETAILED DESCRIPTION

[0037] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0038] like Figure 1-Figure 11As shown, the vehicle-mounted dust-free speaker provided in this embodiment includes a shell 1 and a dustproof component installed inside the shell 1, which is used to protect the speaker from dust and to form a dust-free space inside the shell 1; a cleaning component, which is used to clean and protect the dustproof component; a collecting component, which is used to collect dust generated by cleaning; a second transmission component, which is used to drive the third transmission component to move; the third transmission component, which is used to move the speaker component, and remove the speaker component from the shell 1 for maintenance; a guide component, which is used to guide and limit the speaker component;The limit assembly is used to limit the dustproof assembly after being pulled. The dustproof assembly includes a dustproof net 3, a winding roller 31, a torsion spring 32 and a limit block 33. The winding roller 31 is rotatably installed inside the shell 1. One end of the winding roller 31 is connected to the shell 1 through the torsion spring 32. The winding roller 31 is connected to one end of the dustproof net 3. The other end of the dustproof net 3 is installed with a limit block 33. The cleaning assembly includes a cleaning brush 4 and a first transmission assembly. The cleaning brush 4 is rotatably installed on the shell 1. The cleaning brush 4 is connected to the winding roller 31 through the first transmission assembly. The first transmission assembly includes a first main pulley 41, a first belt 42 and a first auxiliary pulley 43. A first main pulley 41 is installed on the cleaning brush 4, a first auxiliary pulley 43 is installed on the winding roller 31, the first main pulley 41 is connected to the first auxiliary pulley 43 through a first belt 42, the speaker assembly includes a connecting frame 8, a second connecting rod 81, a connecting ring 82 and a speaker body 83, one end of the connecting column 62 is connected to one side of the connecting frame 8, one end of the first connecting rod 72 is connected to the connecting frame 8, a second connecting rod 81 is installed on the connecting frame 8, one end of the second connecting rod 81 is connected to the connecting ring 82, a speaker body 83 is installed inside the connecting ring 82, and the speaker body 83 can be cleaned by setting a dustproof net 3. The dustproof protection is provided by setting a torsion spring 32, loosening the dustproof net 3, and the torsion spring 32 contracts to drive the winding roller 31 to rotate on the shell 1, thereby driving the dustproof net 3 to move, and when the winding roller 31 rotates, it can drive the cleaning brush 4 to rotate through the first transmission component, and when the cleaning brush 4 rotates, it can clean the dustproof net 3, so that the dustproof net 3 is not easily blocked, and the collecting component includes a collecting box plate 2, a handle 21 and a collecting box 22. The collecting box 22 is slidably installed inside the shell 1, and the collecting box 22 is located below the cleaning brush 4. The collecting box plate 2 is installed on the collecting box 22, and the handle 21 is installed on the collecting box plate 2. There is an anti-skid pad. By setting the collection box 22, it is convenient to collect the dust swept by the cleaning brush 4. By setting the handle 21, it is convenient to pull the collection box 22. By setting the anti-skid pad, it is convenient to increase the friction of the handle 21. A slider 23 is installed at the bottom of the collection box 22. The housing 1 is provided with a slide groove that cooperates with the slider 23. The collection box 22 is a T-shaped slider, and the slide groove is a T-shaped slide groove. By setting the slider 23 to be slidably connected with the slide groove, it is convenient to slide the collection box 22 to disassemble the full collection box 22. By setting the collection box 22 to be a T-shaped slider and cooperating with the T-shaped slide groove, it is convenient to guide and limit the collection box 22. ;

[0039] In this embodiment, if Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the second transmission assembly includes a second main pulley 5, a second belt 51, a second auxiliary pulley 52 and a rotating rod 53. The rotating rod 53 is rotatably installed on the shell 1, and the second auxiliary pulley 52 is installed on the rotating rod 53. The second main pulley 5 is installed on the winding roller 31, and the second main pulley 5 is connected to the second auxiliary pulley 52 through the second belt 51. The third transmission assembly includes a gear 6, a rack 61 and a connecting column 62. The gear 6 is installed on the rotating rod 53. A connecting column 62 is installed on one side of the speaker assembly, and a rack 61 meshing with the gear 6 is installed on one end of the connecting column 62. The speaker assembly is connected to the guide assembly, and the gear 6 is set. 6, when the winding roller 31 rotates, it can easily drive the gear 6 to rotate through the second transmission component. When the gear 6 rotates, it can be easily driven to move the speaker body 83 through the rack 61 meshing with the gear 6. The speaker body 83 is removed from the shell 1 to facilitate the maintenance of the speaker body 83 by the staff. The guide assembly includes a guide rod 7, a guide ring 71, a first connecting rod 72 and a side block 73. The shell 1 is equipped with a guide rod 7, a guide ring 71 is slidably installed on the guide rod 7, and a side block 73 is installed on the guide ring 71. The side block 73 is connected to the speaker assembly through the first connecting rod 72. By setting the guide ring 71 and the guide rod 7 to slide The movable connection can facilitate the guiding and limiting of the speaker body 83. The limiting assembly includes a limiting rod 9, a connecting plate 91, a spring 92, a limiting ring 93, a side rod 94 and an insert block 95. The limiting rod 9 is installed on the shell 1, and the limiting ring 93 is slidably installed on the limiting rod 9. The side rod 94 is installed on the limiting ring 93. One end of the side rod 94 is connected to the connecting plate 91, and the insert block 95 is installed on the connecting plate 91. A slot that cooperates with the insert block 95 is opened on the limiting block 33. The connecting plate 91 is connected to the shell 1 through the spring 92. The connecting plate 91 is slid, the spring 92 is shortened, and the limiting ring 93 slides on the limiting rod 9 to remove the insert block 95 from the slot. The dust screen 3 can be rolled up by the winding roller 31, and the cleaning brush 4 can be driven to rotate through the first auxiliary pulley 43, the first belt 42 and the first main pulley 41 to clean the dust screen 3. When the winding roller 31 rotates, the gear 6 can be driven to rotate through the second main pulley 5, the second belt 51 and the second auxiliary pulley 52. ​​When the gear 6 rotates, it can drive the connecting column 62 to move, and the speaker body 83 can be slipped out of the shell 1, so that the staff can repair the speaker body 83 conveniently.

[0040] In this embodiment, if Figure 1-Figure 11 As shown, the working process of a vehicle-mounted dust-free speaker provided in this embodiment is as follows:

[0041] Step 1: Slide the connecting plate 91, shorten the spring 92, slide the limiting ring 93 on the limiting rod 9, and then slide the insert block 95 from the slot;

[0042] Step 2: When the insert block 95 slides out of the limit block 33, the torsion spring 32 shortens, thereby driving the winding roller 31 to rotate. When the winding roller 31 rotates, the dust screen 3 is wound up. When the dust screen 3 is wound up, the winding roller 31 rotates to drive the first auxiliary pulley 43 to rotate, and the first main pulley 41 is driven to rotate through the first belt 42, thereby driving the cleaning brush 4 to rotate to clean the dust screen 3. The dust falling from the dust screen 3 falls into the collection box 22 for collection;

[0043] Step 3: When the winding roller 31 winds up the dustproof net 3, the winding roller 31 rotates to drive the second main pulley 5 to rotate, and the second main pulley 5 drives the second auxiliary pulley 52 to rotate through the second belt 51. When the second auxiliary pulley 52 rotates, it drives the rotating rod 53 to rotate, and when the rotating rod 53 rotates, it drives the gear 6 to rotate. When the gear 6 rotates, it drives the rack 61 to move, and then drives the speaker body 83 to move, and slide the speaker body 83 out of the shell 1. The staff repairs the speaker body 83. When the speaker body 83 moves, the guide ring 71 slides on the guide rod 7 to guide and limit the speaker body 83.

[0044] In summary, in the present embodiment, according to the vehicle-mounted dust-free speaker of the present embodiment, by providing the dustproof net 3, the speaker body 83 can be protected from dust, and by providing the torsion spring 32, the dustproof net 3 is loosened, and the torsion spring 32 contracts to drive the winding roller 31 to rotate on the shell 1, thereby driving the dustproof net 3 to move, and when the winding roller 31 rotates, the cleaning brush 4 can be driven to rotate through the first transmission assembly, and when the cleaning brush 4 rotates, the dustproof net 3 can be cleaned, so that the dustproof net 3 is not easily blocked, and by providing the collection box 22, it can be convenient In order to collect the dust swept by the cleaning brush 4, by providing a handle 21, it is convenient to pull the collection box 22, by providing an anti-skid pad, it is convenient to increase the friction of the handle 21, by providing a slider 23 and sliding connection with the slide groove, it is convenient to slide the collection box 22 to disassemble the full collection box 22, by providing the collection box 22 as a T-shaped slider and the T-shaped slide groove to cooperate with each other, it is convenient to guide and limit the collection box 22, and by providing a gear 6, when the winding roller 31 rotates, it is convenient to drive the gear 6 to rotate through the second transmission component, and the gear 6 rotates When the speaker body 83 is moved, the rack 61 is meshed with the gear 6, which can facilitate the movement of the speaker body 83. The speaker body 83 can be removed from the housing 1 to facilitate the maintenance of the speaker body 83 by the staff. The guide ring 71 is provided to be slidably connected with the guide rod 7, which can facilitate the guide limit of the speaker body 83. The sliding connecting plate 91 shortens the spring 92, and the limiting ring 93 slides on the limiting rod 9 to slide the plug 95 out of the slot, so that the plug 95 can be moved away from the limiting block 33, so that the torsion spring 32 shortens and recovers. , driving the winding roller 31 to wind up the dustproof net 3. When the dustproof net 3 is rolled up, the winding roller 31 rotates, and the first auxiliary pulley 43, the first belt 42 and the first main pulley 41 cooperate with each other to drive the cleaning brush 4 to rotate to clean the dustproof net 3. When the winding roller 31 rotates, the second main pulley 5, the second belt 51 and the second auxiliary pulley 52 drive the gear 6 to rotate. When the gear 6 rotates, it can drive the connecting column 62 to move, and the speaker body 83 slides out of the shell 1, which is convenient for the staff to repair the speaker body 83.

[0045] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0046] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0047] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A car-mounted dust-free speaker, characterized in that: It comprises a housing (1) and a dustproof component installed inside the housing (1), which is used to provide dustproof protection for the speaker and to form a dust-free space inside the housing (1); A cleaning component, used for cleaning and protecting the dustproof component; A collecting component, used for collecting dust generated by cleaning; The second transmission assembly is used to drive the third transmission assembly to move; A third transmission assembly, used for moving the loudspeaker assembly, and removing the loudspeaker assembly from the housing (1) for maintenance; A guide assembly, used for guiding and limiting the speaker assembly; The limiting component is used to limit the position of the dustproof component after being pulled.

2. The vehicle-mounted dust-free speaker according to claim 1, characterized in that: The dustproof component comprises a dustproof net (3), a winding roller (31), a torsion spring (32) and a limit block (33); the winding roller (31) is rotatably mounted inside the shell (1); one end of the winding roller (31) is connected to the shell (1) via a torsion spring (32); the winding roller (31) is connected to one end of the dustproof net (3); and the other end of the dustproof net (3) is mounted with a limit block (33).

3. The vehicle-mounted dust-free speaker according to claim 2, characterized in that: The cleaning assembly comprises a cleaning brush (4) and a first transmission assembly. The cleaning brush (4) is rotatably mounted on the housing (1). The cleaning brush (4) is connected to the winding roller (31) via the first transmission assembly. The first transmission assembly comprises a first main pulley (41), a first belt (42) and a first auxiliary pulley (43). The cleaning brush (4) is mounted with the first main pulley (41). The winding roller (31) is mounted with the first auxiliary pulley (43). The first main pulley (41) is connected to the first auxiliary pulley (43) via the first belt (42).

4. The vehicle-mounted dust-free speaker according to claim 3, characterized in that: The collecting assembly comprises a collecting box plate (2), a handle (21) and a collecting box (22); the collecting box (22) is slidably mounted inside the shell (1); the collecting box (22) is located below the cleaning brush (4); the collecting box plate (2) is mounted on the collecting box (22); the handle (21) is mounted on the collecting box plate (2); and the handle (21) is mounted on an anti-slip pad.

5. The vehicle-mounted dust-free speaker according to claim 4, characterized in that: A slider (23) is installed at the bottom of the collection box (22), and a slide groove cooperating with the slider (23) is provided on the shell (1). The collection box (22) is a T-shaped slider, and the slide groove is a T-shaped slide groove.

6. The vehicle-mounted dust-free speaker according to claim 3, characterized in that: The second transmission assembly comprises a second main pulley (5), a second belt (51), a second auxiliary pulley (52) and a rotating rod (53); the rotating rod (53) is rotatably mounted on the housing (1); the second auxiliary pulley (52) is mounted on the rotating rod (53); the second main pulley (5) is mounted on the winding roller (31); and the second main pulley (5) is connected to the second auxiliary pulley (52) via a second belt (51).

7. The vehicle-mounted dust-free speaker according to claim 6, characterized in that: The third transmission assembly comprises a gear (6), a rack (61) and a connecting column (62); the gear (6) is mounted on the rotating rod (53); a connecting column (62) is mounted on one side of the speaker assembly; one end of the connecting column (62) is mounted with the rack (61) meshing with the gear (6); and the speaker assembly is connected to the guide assembly.

8. The vehicle-mounted dust-free speaker according to claim 7, characterized in that: The guide assembly comprises a guide rod (7), a guide ring (71), a first connecting rod (72) and a side block (73); the shell (1) is provided with a guide rod (7); the guide ring (71) is slidably mounted on the guide rod (7); the guide ring (71) is provided with a side block (73); and the side block (73) is connected to the speaker assembly via the first connecting rod (72).

9. The vehicle-mounted dust-free speaker according to claim 8, characterized in that: The speaker assembly comprises a connecting frame (8), a second connecting rod (81), a connecting ring (82) and a speaker body (83), one end of the connecting column (62) is connected to one side of the connecting frame (8), one end of the first connecting rod (72) is connected to the connecting frame (8), a second connecting rod (81) is installed on the connecting frame (8), one end of the second connecting rod (81) is connected to the connecting ring (82), and a speaker body (83) is installed inside the connecting ring (82).

10. The vehicle-mounted dust-free speaker according to claim 2, characterized in that: The limiting assembly comprises a limiting rod (9), a connecting plate (91), a spring (92), a limiting ring (93), a side rod (94) and an insert block (95); the limiting rod (9) is installed on the shell (1); the limiting ring (93) is slidably installed on the limiting rod (9); the side rod (94) is installed on the limiting ring (93); one end of the side rod (94) is connected to the connecting plate (91); the insert block (95) is installed on the connecting plate (91); the limiting block (33) is provided with a slot that cooperates with the insert block (95); the connecting plate (91) is connected to the shell (1) via a spring (92).