Sealed loudspeaker box

Abstract

The invention belongs to the technical field of loudspeakers, and particularly relates to a sealed loudspeaker box which comprises a box body. An electric push cylinder is fixedly connected to the inner side wall of the box body; the output end of the electric push cylinder is fixedly connected with a fixed rod; the end part of the fixed rod is fixedly connected with a loudspeaker body; the inner side wall of the box body is slidably connected with a pair of first sealing covers; the first sealing covers are symmetrically arranged on the two sides of the loudspeaker body; a connecting rod is hinged to the side wall of the first sealing cover; the end part of the connecting rod is hinged to the middle part of the fixing rod, and the surface of the loudspeaker body can be sealed through the cooperation of the second sealing cover and the sealing ring, thereby reducing the corrosion of the residual water vapor in the box body to the box body while reducing the external water vapor entering the box body. Through double-layer sealing, the problem of adhesion failure of the loudspeaker body caused by water vapor corrosion can be effectively reduced, the service life of the loudspeaker body is prolonged, and the safety during placement of the loudspeaker body is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of loudspeakers, in particular to a sealed loudspeaker box. Background Art

[0002] A speaker, also known as a "horn", is a transducer device that converts electrical signals into sound signals and is a core component in many electroacoustic systems and audio equipment.

[0003] The diaphragm material selected for the speaker unit largely determines the performance orientation of its sound quality. At present, there are four common speaker diaphragm materials on the market: paper cone, plastic, metal and synthetic fiber. According to the sound characteristics of different speakers, there are different requirements for the diaphragm material, so choose according to your needs.

[0004] The diaphragm and dome structure in a speaker are usually bonded together. When the speaker is placed in a humid environment for a long time, the speaker diaphragm will be in contact with the outside world for a long time. Moisture in the surrounding environment will enter and accumulate at the connection between the diaphragm and the dome, causing the bonding to fail and affecting the sound performance of the speaker.

[0005] To this end, the present invention provides a sealed speaker box. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a sealed loudspeaker box described in the present invention comprises a box body; an electric push cylinder is fixedly connected to the inner wall of the box body; a fixing rod is fixedly connected to the output end of the electric push cylinder; a loudspeaker body is fixedly connected to the end of the fixing rod; a pair of first sealing covers are slidably connected to the inner wall of the box body; the first sealing covers are symmetrically arranged on both sides of the loudspeaker body; a connecting rod is hingedly connected to the side wall of the first sealing cover; the end of the connecting rod and the middle of the fixing rod are hingedly arranged; a first sliding groove is opened on the side wall of the first sealing cover close to the loudspeaker body; the inside of the first sliding groove slides A first sliding rod is dynamically connected; a sealing block is fixedly connected to the end of the first sliding rod; a first return spring is fixedly connected between the end of the first sliding rod and the inner wall of the first sliding groove; a second spring rod is hingedly connected to the side wall of the first sealing cover; a second sealing cover is hingedly connected to the end of the second spring rod; the side wall of the sealing block is hingedly connected to the first spring rod; the end of the first spring rod is hinged to the side wall of the second sealing cover; a sealing ring is fixedly connected to the side wall of the second sealing cover. The above structure can effectively reduce the problem of adhesion failure of the speaker body due to water vapor corrosion, thereby improving the service life of the speaker body and the safety during placement.

[0008] Preferably, a plurality of storage grooves are provided inside the sealing ring; a T-shaped through hole is provided on the surface of the sealing ring; a protective cover is provided on the T-shaped through hole; a lever is fixedly connected to the side wall of the protective cover; a plurality of ventilation holes are provided in the middle of the protective cover. The above structure reduces the possibility of corrosion of the speaker body and further improves the protection effect of the speaker body.

[0009] Preferably, a second slide groove is provided on the side wall of the first sealing cover; a plurality of telescopic connecting blocks are slidably connected inside the second slide groove; the end of the telescopic connecting block is fixedly connected to the side wall of the second sealing cover. The above structure improves the stability of the second sealing cover during movement, so that the second sealing cover can seal the speaker body more accurately.

[0010] Preferably, a pair of rolling grooves are provided on the inner side wall of the second slide groove; the rolling grooves are symmetrically arranged inside the second slide groove; a pair of anti-wear balls are provided on the side wall of the telescopic connection block; the anti-wear balls are located inside the rolling grooves and are in rolling fit with the rolling grooves. Through the above structure, part of the sliding friction is converted into rolling friction, thereby reducing the wear of the telescopic connection block, thereby improving the smoothness of the telescopic connection block during operation and the service life of the telescopic connection block.

[0011] Preferably, the side wall of the second sealing cover is provided with a plurality of third sliding grooves; a second sliding rod is slidably connected inside the third sliding groove; an anti-collision block is fixedly connected to the end of the second sliding rod; a plurality of second return springs are fixedly connected between the side wall of the second sealing cover and the side wall of the anti-collision block; the second return spring is sleeved on the second sliding rod; an elastic sealing cloth is fixedly connected between the side wall of the anti-collision block and the side wall of the second sealing cover; the elastic sealing cloth is sleeved on the second return spring. The above structure improves the sealing performance of the second sealing cover to the speaker body, and improves the protection effect of the speaker body.

[0012] Preferably, a pair of air cylinders are fixedly connected to the inner wall of the box body; the air cylinders are symmetrically arranged on both sides of the electric push cylinder; a gasket is fixedly connected to the output end of the air cylinder; a baffle is fixedly connected to the middle of the output end of the electric push cylinder; a connecting pipe is fixedly connected to the middle of the air cylinder; a nozzle is fixedly connected to the end of the connecting pipe; the nozzle is inclined; a one-way valve is provided on the air cylinder, and the above structure improves the cleanliness of the speaker body, thereby reducing the wear of the speaker body and improving the protection effect of the speaker body.

[0013] Preferably, a first support rod is fixedly connected to the side wall of the second sealing cover; a first ring is fixedly connected to the end of the first support rod; the first ring is sleeved on the nozzle and fixedly connected to the nozzle; the connecting pipe is a hose, and the above structure improves the cleaning effect of the nozzle on the speaker body.

[0014] Preferably, a plurality of second support rods are fixedly connected to the inner wall of the box body; a second ring is fixedly connected to the end of the second support rod; the second ring is sleeved on the connecting tube and is slidably connected to the connecting tube. The above structure reduces the damage to other components caused by the connecting tube being entangled inside the box body, improves the protection effect of the box body, and makes the movement of the connecting tube more stable.

[0015] Preferably, a pair of third return springs are fixedly connected to the inner wall of the box body; the end of the third return spring is fixedly connected to the middle of the connecting pipe. The above structure reduces the problem of connecting pipes being piled up and difficult to use next time, thereby improving the utilization rate of the connecting pipes.

[0016] Preferably, a plurality of positioning grooves are provided on the side wall on which the sealing blocks are close to each other; a plurality of positioning blocks are fixedly connected to the side wall on which the sealing blocks are close to each other; the positioning blocks and the positioning grooves are alternately arranged, and a pair of positioning grooves and positioning blocks on the sealing blocks are arranged in cooperation with each other. The above structure makes it difficult for the sealing blocks to be misaligned when they are fitted, thereby improving the stability of the sealing blocks when they are sealed in cooperation with the first sealing cover.

[0017] The beneficial effects of the present invention are as follows: 1. The sealed speaker box described in the present invention can seal the surface of the speaker body through the cooperation of the second sealing cover and the sealing ring, thereby reducing the corrosion of the box body by the remaining water vapor inside the box while reducing the external water vapor entering the box body. The double-layer sealing can effectively reduce the problem of adhesion failure of the speaker body due to water vapor corrosion, thereby improving the service life of the speaker body and the safety of placement.

[0018] 2. The sealed speaker box described in the present invention has a plurality of ventilation holes on the protective cover, so that the moisture inside the box can be adsorbed by the desiccant inside the storage tank, thereby reducing the residual moisture inside the box during normal periods, and reducing the possibility of corrosion of the speaker body when the speaker body is stored in the box, thereby further improving the protection effect of the speaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention; Figure 2 It is a structural schematic diagram of the box body in the present invention; Figure 3 It is a structural schematic diagram of the speaker body in the present invention; Figure 4 It is a structural schematic diagram of the electric push cylinder in the present invention; Figure 5It is a structural schematic diagram of the connecting pipe in the present invention; Figure 6 It is a structural schematic diagram of the first sealing cover in the present invention; Figure 7 It is a structural schematic diagram of the sealing ring in the present invention; In the figure: 1, box body; 11, electric push cylinder; 12, fixing rod; 13, speaker body; 14, first sealing cover; 15, connecting rod; 16, first slide groove; 17, first slide rod; 18, sealing block; 19, first return spring; 101, first spring rod; 102, second sealing cover; 103, sealing ring; 104, second spring rod; 2, storage slot; 21, T-shaped through hole; 22, protective cover; 23, lever; 24, vent hole; 3, second slide Groove; 31, telescopic connecting block; 4, rolling groove; 41, anti-wear ball; 5, third slide groove; 51, second slide rod; 52, anti-collision block; 53, second return spring; 54, elastic sealing cloth; 6, air cylinder; 61, gasket; 62, baffle; 63, connecting pipe; 64, nozzle; 65, one-way valve; 7, first support rod; 71, first ring; 8, second support rod; 81, second ring; 9, third return spring; 10, positioning groove; 110, positioning block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 6As shown, a sealed speaker box according to an embodiment of the present invention comprises a box body 1; an electric push cylinder 11 is fixedly connected to the inner wall of the box body 1; a fixing rod 12 is fixedly connected to the output end of the electric push cylinder 11; a speaker body 13 is fixedly connected to the end of the fixing rod 12; a pair of first sealing covers 14 are slidably connected to the inner wall of the box body 1; the first sealing covers 14 are symmetrically arranged on both sides of the speaker body 13; a connecting rod 15 is hingedly connected to the side wall of the first sealing cover 14; the end of the connecting rod 15 is hingedly arranged to the middle part of the fixing rod 12; a first slide groove 16 is opened on the side wall of the first sealing cover 14 close to the speaker body 13; the first slide groove 1 6 is slidably connected with a first slide bar 17 inside; a sealing block 18 is fixedly connected to the end of the first slide bar 17; a first return spring 19 is fixedly connected between the end of the first slide bar 17 and the inner side wall of the first slide groove 16; a second spring rod 104 is hingedly connected to the side wall of the first sealing cover 14; a second sealing cover 102 is hingedly connected to the end of the second spring rod 104; a first spring rod 101 is hingedly connected to the side wall of the sealing block 18; the end of the first spring rod 101 is hingedly connected to the side wall of the second sealing cover 102; a sealing ring 103 is fixedly connected to the side wall of the second sealing cover 102. When working, in a place where the use environment is relatively humid, when it is not necessary to play, by opening The switch of the electric push cylinder 11 is turned on, so that the electric push cylinder 11 drives the speaker body 13 to move into the box body 1, and then the speaker body 13 is stored in the box body 1. At this time, through the connection of the connecting rod 15, a pair of first sealing covers 14 bring the second sealing covers 102 to move closer to the middle. When the first sealing covers 14 move to a certain position, the sealing blocks 18 located between the first sealing covers 14 will contact each other, and then in the process of the first sealing covers 14 continuing to approach, the second sealing cover 102 moves to a position close to the speaker body 13. When the box body 1 is sealed and blocked under the cooperation of the first sealing covers 14 and the sealing blocks 18, the second sealing covers 102 are The cooperation between the sealing cover 102 and the sealing ring 103 will seal the surface of the speaker body 13, thereby reducing the entry of external water vapor into the interior of the box body 1 while reducing the corrosion of the box body 1 by the remaining water vapor inside the box body 1. The double-layer sealing can effectively reduce the problem of adhesion failure of the speaker body 13 due to water vapor corrosion, thereby improving the service life of the speaker body 13 and the safety of placement. When the speaker body 13 is needed again, the switch of the electric push cylinder 11 is turned on, so that the electric push cylinder 11 pushes the speaker body 13 outward, and under the connection of the connecting rod 15, the first sealing cover 14 and the second sealing cover 102 will move to both sides.

[0023] like Figure 4 , Figure 6 and Figure 7As shown, a plurality of storage slots 2 are provided inside the sealing ring 103; a T-shaped through hole 21 is provided on the surface of the sealing ring 103; a protective cover 22 is provided on the T-shaped through hole 21; a lever 23 is fixedly connected to the side wall of the protective cover 22; a plurality of ventilation holes 24 are provided in the middle of the protective cover 22. When working, by opening the protective cover 22, a pre-prepared desiccant is placed inside the storage slot 2, and then the protective cover 22 is buckled on the T-shaped through hole 21, and the storage slot 2 is blocked by the friction between the T-shaped through hole 21 and the protective cover 22. By providing a plurality of ventilation holes 24 on the protective cover 22, the moisture inside the box body 1 can be adsorbed by the desiccant inside the storage slot 2, thereby reducing the moisture residue inside the box body 1 during normal times, and thereby reducing the possibility of the speaker body 13 being corroded when the speaker body 13 is stored inside the box body 1, and further improving the protection effect of the speaker body 13.

[0024] like Figure 4 and Figure 6 As shown, a second slide groove 3 is provided on the side wall of the first sealing cover 14; a plurality of telescopic connecting blocks 31 are slidably connected inside the second slide groove 3; the end of the telescopic connecting block 31 is fixedly connected to the side wall of the second sealing cover 102. During operation, by providing the telescopic connecting block 31 between the second sealing cover 102 and the first sealing cover 14, when the second sealing cover 102 moves closer to the speaker body 13 under the drive of the first sealing cover 14, because the sealing block 18 is relatively stationary, the end of the pair of first spring rods 101 located at one end of 18 will not continue to move, and the second spring rods 104 on the first sealing cover 14 will continue to move downward, so that the second sealing cover 102 will slide downward when it approaches the speaker body 13, and then through the connection of the telescopic connecting block 31, the possibility of the second sealing cover 102 being offset when it moves toward the speaker body 13 is reduced, the stability of the second sealing cover 102 when it moves is improved, and the second sealing cover 102 can seal the speaker body 13 more accurately.

[0025] like Figure 6 As shown, a pair of rolling grooves 4 are provided on the inner side wall of the second slide groove 3; the rolling grooves 4 are symmetrically arranged inside the second slide groove 3; a pair of anti-wear balls 41 are provided on the side wall of the telescopic connection block 31; the anti-wear balls 41 are located inside the rolling grooves 4, and are in rolling cooperation with the rolling grooves 4. During operation, by providing the anti-wear balls 41 on the telescopic connection block 31, when the telescopic connection block 31 slides inside the second slide groove 3, part of the sliding friction is converted into rolling friction through the cooperation of the rolling grooves 4 and the anti-wear balls 41, thereby reducing the wear of the telescopic connection block 31, thereby improving the smoothness of the telescopic connection block 31 during operation and the service life of the telescopic connection block 31.

[0026] like Figure 6As shown, a plurality of third slide grooves 5 are provided on the side wall of the second sealing cover 102; a second slide rod 51 is slidably connected inside the third slide groove 5; an anti-collision block 52 is fixedly connected to the end of the second slide rod 51; a plurality of second return springs 53 are fixedly connected between the side wall of the second sealing cover 102 and the side wall of the anti-collision block 52; the second return spring 53 is sleeved on the second slide rod 51; an elastic sealing cloth 54 is fixedly connected between the side wall of the anti-collision block 52 and the side wall of the second sealing cover 102; the elastic sealing cloth 54 is sleeved on the second return spring 53. When working, the anti-collision blocks 52 are provided between the second sealing covers 102, and the anti-collision blocks 52 are fitted together when the second sealing covers 102 contact each other. The elastic sealing cloth 54 adaptively fills the partial gap between the second sealing covers 102, thereby improving the sealing performance of the second sealing cover 102 to the speaker body 13 and improving the protection effect of the speaker body 13.

[0027] like Figures 1 to 5 As shown, a pair of air cylinders 6 are fixedly connected to the inner wall of the box body 1; the air cylinders 6 are symmetrically arranged on both sides of the electric push cylinder 11; a gasket 61 is fixedly connected to the output end of the air cylinder 6; a baffle 62 is fixedly connected to the middle of the output end of the electric push cylinder 11; a connecting pipe 63 is fixedly connected to the middle of the air cylinder 6; a nozzle 64 is fixedly connected to the end of the connecting pipe 63; the nozzle 64 is inclined; a one-way valve 65 is provided on the air cylinder 6. When working, when the electric push cylinder 11 drives the speaker body 13 to move into the box body 1, the baffle 62 on the output end of the electric push cylinder 11 will move to the air cylinder 6 The speaker body 13 of the box body 1 is moved in the same direction as the speaker body 13, thereby causing the baffle 62 to push the output end of the air cylinder 6, so that the air inside the air cylinder 6 is transported through the connecting pipe 63 and ejected from the end of the nozzle 64, thereby blowing off the dust and impurities remaining on the surface of the speaker body 13 that have entered the box body 1, so that when the second sealing cover 102 and the sealing ring 103 seal and protect the speaker body 13, the moisture and impurities remaining on the speaker body 13 are reduced, and the cleanliness of the speaker body 13 is improved to reduce the wear of the speaker body 13, thereby improving the protection effect of the speaker body 13.

[0028] like Figure 4 and Figure 5 As shown, the side wall of the second sealing cover 102 is fixedly connected to the first support rod 7; the end of the first support rod 7 is fixedly connected to the first ring 71; the first ring 71 is sleeved on the nozzle 64 and is fixedly connected to the nozzle 64; the connecting pipe 63 is set as a hose. When working, by providing the first support rod 7 and the first ring 71 between the second sealing cover 102 and the nozzle 64, the second sealing cover 102 can drive the nozzle 64 to move toward the middle direction when the second sealing cover 102 moves downward, and the position of the nozzle 64 is moved to make the cleaning range of the nozzle 64 wider, thereby improving the cleaning effect of the nozzle 64 on the speaker body 13.

[0029] like Figure 4 and Figure 5 As shown, a plurality of second support rods 8 are fixedly connected to the inner wall of the box body 1; a second ring 81 is fixedly connected to the end of the second support rod 8; the second ring 81 is sleeved on the connecting pipe 63, and is slidably connected to the connecting pipe 63. When working, by providing the second ring 81 and the second support rod 8 on the box body 1, the position of the connecting pipe 63 can be restricted, and the damage to other components caused by the connecting pipe 63 being entangled in the box body 1 is reduced, thereby improving the protection effect of the box body 1 and making the movement of the connecting pipe 63 more stable.

[0030] like Figure 4 and Figure 5 As shown, a pair of third return springs 9 are fixedly connected to the inner wall of the box body 1; the end of the third return spring 9 is fixedly connected to the middle part of the connecting pipe 63. When working, by arranging the third return spring 9 between the connecting pipe 63 and the box body 1, when the speaker body 13 is needed, the speaker body 13 is pushed out of the box body 1. At this time, the nozzle 64 is reset under the drive of the second sealing cover 102, and the stretched connecting pipe 63 is pulled back under the action of the third return spring 9, and then the connecting pipe 63 is reset, thereby reducing the problem of the connecting pipe 63 being piled up and difficult to use next time, and improving the utilization rate of the connecting pipe 63.

[0031] like Figure 4 and Figure 6 As shown, a plurality of positioning grooves 10 are provided on the side wall of the sealing blocks 18 which are close to each other; a plurality of positioning blocks 110 are fixedly connected to the side wall of the sealing blocks 18 which are close to each other; the positioning blocks 110 and the positioning grooves 10 are alternately arranged, and a pair of positioning grooves 10 and positioning blocks 110 on the sealing blocks 18 are arranged in coordination with each other. During operation, by providing positioning grooves 10 and positioning blocks 110 between the sealing blocks 18, when the sealing blocks 18 are fitted together, the positioning blocks 110 can be inserted into the positioning grooves 10, so that it is difficult for the sealing blocks 18 to be misaligned when they are fitted together, thereby improving the stability of the sealing blocks 18 when they are sealed in coordination with the first sealing cover 14.

[0032] Working principle: In a place where the use environment is relatively humid, when playback is not needed, the electric push cylinder 11 is turned on to drive the electric push cylinder 11 to move the speaker body 13 toward the inside of the box 1, and then the speaker body 13 is stored inside the box 1. At this time, through the connection of the connecting rod 15, a pair of first sealing covers 14 bring the second sealing covers 102 closer to the middle. When the first sealing covers 14 move to a certain position, the sealing blocks 18 located between the first sealing covers 14 will contact each other, and then in the process of the first sealing covers 14 continuing to approach, the second sealing cover 102 moves to a position close to the speaker body 13. With the cooperation of the first sealing covers 14 and the sealing blocks 18 When the box body 1 is sealed, the cooperation of the second sealing cover 102 and the sealing ring 103 will seal the surface of the speaker body 13, thereby reducing the entry of external water vapor into the box body 1 while reducing the corrosion of the box body 1 by the remaining water vapor inside the box body 1. The double-layer sealing can effectively reduce the problem of adhesion failure of the speaker body 13 due to water vapor corrosion, thereby improving the service life of the speaker body 13 and the safety of placement. When the speaker body 13 is needed again, the switch of the electric push cylinder 11 is turned on, so that the electric push cylinder 11 pushes the speaker body 13 outward, and under the connection of the connecting rod 15, the first sealing cover 14 and the second sealing cover 102 will move to both sides.

[0033] By opening the protective cover 22, the pre-prepared desiccant is placed inside the storage slot 2, and then the protective cover 22 is buckled onto the T-shaped through hole 21, and the storage slot 2 is sealed by the friction between the T-shaped through hole 21 and the protective cover 22. By providing a plurality of ventilation holes 24 on the protective cover 22, the moisture inside the box body 1 can be adsorbed by the desiccant inside the storage slot 2, thereby reducing the residual moisture inside the box body 1 during normal periods, and thus reducing the possibility of the speaker body 13 being corroded when the speaker body 13 is stored inside the box body 1, and further improving the protection effect of the speaker body 13.

[0034] By providing a telescopic connecting block 31 between the second sealing cover 102 and the first sealing cover 14, when the second sealing cover 102 moves toward the speaker body 13 driven by the first sealing cover 14, because the sealing block 18 is relatively stationary, the end portions of the pair of first spring rods 101 located at one end of 18 will not continue to move, while the second spring rods 104 on the first sealing cover 14 will continue to move downward, thereby causing the second sealing cover 102 to slide downward when approaching the speaker body 13, and then through the connection of the telescopic connecting block 31, the possibility of the second sealing cover 102 being offset when moving toward the speaker body 13 is reduced, thereby improving the stability of the second sealing cover 102 when moving, and enabling the second sealing cover 102 to seal the speaker body 13 more accurately.

[0035] By providing the anti-wear ball 41 on the telescopic connecting block 31, when the telescopic connecting block 31 slides in the second slide groove 3, part of the sliding friction can be converted into rolling friction through the cooperation of the rolling groove 4 and the anti-wear ball 41, thereby reducing the wear of the telescopic connecting block 31, thereby improving the smoothness of the telescopic connecting block 31 during operation and the service life of the telescopic connecting block 31.

[0036] By providing anti-collision blocks 52 between the second sealing covers 102, the anti-collision blocks 52 are fitted together when the second sealing covers 102 are in contact with each other, and the elastic sealing cloth 54 is used to adaptively fill the partial gap between the second sealing covers 102, thereby improving the sealing performance of the second sealing cover 102 to the speaker body 13 and improving the protection effect of the speaker body 13.

[0037] When the electric push cylinder 11 drives the speaker body 13 to move into the box body 1, the baffle 62 located on the output end of the electric push cylinder 11 will move in the direction of the air cylinder 6, so that the baffle 62 pushes the output end of the air cylinder 6, and the air inside the air cylinder 6 is transported through the connecting pipe 63 and ejected from the end of the nozzle 64, thereby blowing off the dust and impurities remaining on the surface of the speaker body 13 that have entered the box body 1, so that the second sealing cover 102 and the sealing ring 103 can reduce the moisture and impurities remaining on the speaker body 13 when sealing and protecting the speaker body 13, thereby reducing the wear of the speaker body 13 by improving the cleanliness of the speaker body 13, thereby improving the protection effect of the speaker body 13.

[0038] By providing the first support rod 7 and the first ring 71 between the second sealing cover 102 and the nozzle 64, when the second sealing cover 102 moves downward, the second sealing cover 102 can drive the nozzle 64 to move toward the middle direction. By moving the position of the nozzle 64, the cleaning range of the nozzle 64 is expanded, thereby improving the cleaning effect of the nozzle 64 on the speaker body 13.

[0039] By providing a second ring 81 and a second support rod 8 on the box body 1, the position of the connecting pipe 63 can be restricted, reducing the damage to other components caused by the connecting pipe 63 being entangled in the box body 1, improving the protection effect of the box body 1, and making the movement of the connecting pipe 63 more stable.

[0040] By providing a third reset spring 9 between the connecting tube 63 and the box body 1, when the speaker body 13 is needed, the speaker body 13 is pushed out of the box body 1. At this time, the nozzle 64 is reset under the drive of the second sealing cover 102, and the stretched connecting tube 63 is pulled back under the action of the third reset spring 9, thereby resetting the connecting tube 63, reducing the problem of the connecting tube 63 being piled up and difficult to use next time, thereby improving the utilization rate of the connecting tube 63.

[0041] By providing a positioning groove 10 and a positioning block 110 between the sealing blocks 18, when the sealing blocks 18 are fitted together, the positioning block 110 can be inserted into the positioning groove 10, making it difficult for the sealing blocks 18 to be misaligned when fitted together, thereby improving the stability of the sealing blocks 18 when sealing with the first sealing cover 14.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sealed speaker box, comprising a box body (1); characterized in that: The inner wall of the box body (1) is fixedly connected to an electric push cylinder (11); the output end of the electric push cylinder (11) is fixedly connected to a fixing rod (12); the end of the fixing rod (12) is fixedly connected to a speaker body (13); the inner wall of the box body (1) is slidably connected to a pair of first sealing covers (14); the first sealing covers (14) are symmetrically arranged on both sides of the speaker body (13); the side wall of the first sealing cover (14) is hingedly connected to a connecting rod (15); the end of the connecting rod (15) and the middle part of the fixing rod (12) are hingedly arranged; the side wall of the first sealing cover (14) close to the speaker body (13) is provided with a first slide groove (16); the first slide groove (16) is internally slidably connected to a first slide rod (17); a sealing block (18) is fixedly connected to the end of the first slide rod (17); a first return spring (19) is fixedly connected between the end of the first slide rod (17) and the inner side wall of the first slide groove (16); a second spring rod (104) is hingedly connected to the side wall of the first sealing cover (14); the end of the second spring rod (104) is hingedly connected to the second sealing cover (102); the side wall of the sealing block (18) is hingedly connected to the first spring rod (101); the end of the first spring rod (101) is hingedly connected to the side wall of the second sealing cover (102); and a sealing ring (103) is fixedly connected to the side wall of the second sealing cover (102).

2. A sealed speaker box according to claim 1, characterized in that: A plurality of storage grooves (2) are provided inside the sealing ring (103); a T-shaped through hole (21) is provided on the surface of the sealing ring (103); a protective cover (22) is provided on the T-shaped through hole (21); a lever (23) is fixedly connected to the side wall of the protective cover (22); and a plurality of ventilation holes (24) are provided in the middle of the protective cover (22).

3. A sealed speaker box according to claim 2, characterized in that: A second sliding groove (3) is provided on the side wall of the first sealing cover (14); a plurality of telescopic connecting blocks (31) are slidably connected inside the second sliding groove (3); and the ends of the telescopic connecting blocks (31) are fixedly connected to the side wall of the second sealing cover (102).

4. A sealed speaker box according to claim 3, characterized in that: A pair of rolling grooves (4) are provided on the inner side wall of the second slide groove (3); the rolling grooves (4) are symmetrically arranged inside the second slide groove (3); a pair of anti-wear balls (41) are provided on the side wall of the telescopic connection block (31); the anti-wear balls (41) are located inside the rolling grooves (4) and are in rolling engagement with the rolling grooves (4).

5. A sealed speaker box according to claim 4, characterized in that: The side wall of the second sealing cover (102) is provided with a plurality of third sliding grooves (5); a second sliding rod (51) is slidably connected inside the third sliding groove (5); an anti-collision block (52) is fixedly connected to the end of the second sliding rod (51); a plurality of second return springs (53) are fixedly connected between the side wall of the second sealing cover (102) and the side wall of the anti-collision block (52); the second return spring (53) is sleeved on the second sliding rod (51); an elastic sealing cloth (54) is fixedly connected between the side wall of the anti-collision block (52) and the side wall of the second sealing cover (102); the elastic sealing cloth (54) is sleeved on the second return spring (53).

6. A sealed speaker box according to claim 5, characterized in that: A pair of air cylinders (6) are fixedly connected to the inner wall of the box body (1); the air cylinders (6) are symmetrically arranged on both sides of the electric push cylinder (11); a gasket (61) is fixedly connected to the output end of the air cylinder (6); a baffle (62) is fixedly connected to the middle of the output end of the electric push cylinder (11); a connecting pipe (63) is fixedly connected to the middle of the air cylinder (6); a nozzle (64) is fixedly connected to the end of the connecting pipe (63); the nozzle (64) is arranged obliquely; and a one-way valve (65) is provided on the air cylinder (6).

7. A sealed speaker box according to claim 6, characterized in that: A first support rod (7) is fixedly connected to the side wall of the second sealing cover (102); a first sleeve ring (71) is fixedly connected to the end of the first support rod (7); the first sleeve ring (71) is sleeved on the nozzle (64) and is fixedly connected to the nozzle (64); and the connecting pipe (63) is a hose.

8. A sealed speaker box according to claim 7, characterized in that: A plurality of second support rods (8) are fixedly connected to the inner wall of the box body (1); a second sleeve ring (81) is fixedly connected to the end of the second support rod (8); the second sleeve ring (81) is sleeved on the connecting pipe (63) and is slidably connected to the connecting pipe (63).

9. A sealed speaker box according to claim 8, characterized in that: A pair of third return springs (9) are fixedly connected to the inner side wall of the box body (1); the ends of the third return springs (9) are fixedly connected to the middle of the connecting pipe (63).

10. A sealed speaker box according to claim 9, characterized in that: A plurality of positioning grooves (10) are provided on the side wall of the sealing block (18) close to each other; a plurality of positioning blocks (110) are fixedly connected to the side wall of the sealing block (18) close to each other; the positioning blocks (110) and the positioning grooves (10) are alternately arranged, and a pair of positioning grooves (10) and positioning blocks (110) on the sealing block (18) are arranged in coordination with each other.

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