A wall-mounted noise reduction

Abstract

When the speaker is lifted up, the frame is in an L-shaped position and the bottom of the frame is fixed with an L-shaped clip, and the bottom of the frame is slidably provided with hanging plates that cooperate with the clips. When the speaker is lifted up, the frame is in an L-shaped position and the bottom of the frame is fixed with an L-shaped clip. When the speaker is lifted up, the frame is in an L-shaped position and the bottom of the frame is fixed with an L-shaped clip. When the speaker is lifted up, the frame is in an L-shaped position and the bottom of the frame is fixed with an L-shaped clip.

Description

Technical Field

[0001] The present invention relates to the technical field of audio installation, and in particular to a wall-mounted noise reduction audio system. Background Art

[0002] Sound refers to sounds other than human language and music, including sounds from the natural environment, animal sounds, sounds from machines and tools, and various sounds produced by human movements.

[0003] Chinese invention patent CN108429981B discloses a wall-mounted speaker that is easy to install. By setting up a fixing bracket, the speaker body can be placed directly on the top of the fixing bracket, which facilitates the installation and removal of the speaker body, thereby facilitating maintenance personnel to repair the speaker body, saving time and effort and improving maintenance work efficiency.

[0004] Although the above-mentioned device facilitates the fixation of the speakers by providing a fixing frame, it is not convenient for the disassembly and installation of the speakers. When the speakers need to be maintained or repaired, the staff are required to work at height. On the one hand, there are certain safety hazards, and on the other hand, it is not convenient for related operations. In summary, there is still room for improvement in the above-mentioned device.

[0005] Therefore, it is necessary to provide a wall-mounted noise reduction device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a wall-mounted noise reduction device to solve the problem that the existing device proposed in the above background technology is convenient for the installation of the speaker through the fixed frame, but it is not convenient for the disassembly and installation of the speaker. When the speaker needs to be maintained or repaired, the staff need to climb up to work, which on the one hand poses certain safety hazards, and on the other hand is not convenient for related operations when working at high altitude.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a wall-mounted noise reduction device, comprising a hanging plate and a support plate connected to the hanging plate, a fixed frame is hung below the support plate, a speaker is installed in the fixed frame, L-shaped clips are fixedly installed on both sides of the top surface of the fixed frame, hanging plates that match the clips are slidably provided on both sides of the bottom of the support plate, a limiting shaft that matches the hanging plate is provided on the support plate, and the limiting shaft and the hanging plate are matched through a limiting component;

[0008] The cam is provided with a toothed plate, and the toothed plate is provided with a toothed plate at one end of the toothed plate and a toothed plate at the outside of the toothed plate. A rotating shaft is provided above the supporting plate, and a fixed sleeve on the rotating shaft is provided with a main gear meshing with the driven gear. A rod sleeve is installed below the fixed block, and a reel is provided on the fixed sleeve outside the rotating shaft. A steel cable is connected between the reel and the fixed frame. When the steel cable lifts the fixed frame to the supporting plate and compresses the rod sleeve, the driven gear can be engaged with the sleeve, so that the rotating shaft can drive the limiting shaft to rotate synchronously during rotation, and the limiting shaft can drive the two hanging plates to approach the card strip at the top of the fixed frame during rotation through the limiting assembly.

[0009] As a further solution of the present invention: a through hole is provided on the hanging plate to cooperate with the limiting shaft, the limiting assembly includes a limiting block arranged on the inner wall of the through hole and elastically arranged with the hanging plate, and a limiting groove is provided on the outer circumference of the limiting shaft to cooperate with the limiting block, and the limiting groove is arranged in a spiral shape.

[0010] As a further solution of the present invention: a plurality of notches are evenly provided on the inner wall of the driven gear, an insertion rod matching the notches is elastically provided on the sleeve, a pressure head is slidably provided in the inner cavity of the sleeve, the end of the pressure head close to the insertion rod is a conical surface, the bottom end face of the insertion rod is inclined and contacts with the pressure head, a push rod is slidably provided at the top end of the rod sleeve, and the push rod is elastically connected to the rod sleeve, the push rod is inserted into the fixed block and slidably matched with it, the top end of the push rod is fixedly connected to a pressure block, and a connecting rod is fixedly provided at the end of the pressure head close to the fixed block, and the side of the pressure block opposite to the connecting rod is inclined.

[0011] As a further solution of the present invention: slide grooves are provided at both sides of the fixed frame, and sealing blocks are slidingly provided in the slide grooves, and the sealing blocks are sealed with the slide grooves. An intake pipe and an exhaust pipe are fixedly installed on the side of the fixed block, and the intake pipe and the exhaust pipe are both connected with the slide grooves, wherein a one-way solenoid valve is installed on the intake pipe, and a valve is installed on the exhaust pipe, one end of the steel cable is fixedly connected to the reel, and the other end of the steel cable extends into the slide groove and is connected to the sealing block.

[0012] As a further solution of the present invention: a guide surface is provided at one end of the limit block inserted into the limit groove, the guide surface is tilted as a whole and is arc-shaped, a groove that slides with the limit block is provided on the inner wall of the through hole, a spring is fixedly installed between the inner end face of the groove and the limit block, a T-slot is provided on the inner wall of the groove, and a socket connected to the T-slot is provided on the side of the hanging plate, a top block is elastically provided in the T-slot, and a clamping block is elastically installed on the side of the limit block close to the top block, and the clamping block cooperates with the T-slot.

[0013] As a further solution of the present invention: a through slot is provided on the support plate, the limit shaft is rotatably installed in the through slot, a thimble is fixedly installed at the inner end surface of the through slot, the thimble and the socket are on the same horizontal line, and a limit spring is fixedly installed between the inner end surface of the through slot and the hanging plate.

[0014] As a further solution of the present invention: a first spring is fixedly arranged between the inner end surface of the rod sleeve and the push rod.

[0015] As a further solution of the present invention: a receiving chamber for slidingly cooperating with the pressing block is provided on the fixing block, and one end of the connecting rod away from the pressing head extends into the receiving chamber.

[0016] As a further solution of the present invention: a guide hole connected to the groove is opened on the hanging plate, and the limit block is sealed in cooperation with the groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are: this device cooperates with the sliding groove through the provided sealing block, which is beneficial to the up and down movement of the fixed frame and the audio installed therein, and when the fixed frame is lifted to the support plate, the limiting shaft can be driven to rotate through the rotating shaft, thereby prompting the two hanging plates to move closer to the center of the support plate, which is beneficial to correct the position of the fixed frame, and the fixed frame can be installed under the support plate through the cooperation between the hanging plate and the card strip. In addition, in the process of the hanging plate moving relative to the card strip, the steel cable is in a pulling state on the fixed frame, so that the force between the hanging plate and the card strip is small, which is beneficial to protecting the relevant components in the device and extending the overall service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure between the sealing block and the fixing frame of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the rotating shaft and the limiting shaft of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the hanging plate and the limiting shaft of the present invention;

[0023] Figure 5 This invention Figure 4 A schematic diagram of the enlarged structure at point B;

[0024] Figure 6 This invention Figure 4 Schematic diagram of the enlarged structure at C;

[0025] Figure 7 It is a schematic structural diagram of the positioning block of the present invention;

[0026] Figure 8 It is the positioning groove distribution diagram of the present invention;

[0027] Figure 9 It is a schematic diagram of the limiting groove structure of the present invention;

[0028] Figure 10 This invention Figure 2 A is an enlarged structural diagram of FIG.

[0029] In the figure: 1. hanging plate; 101. supporting plate; 2. belt; 3. rotating shaft; 4. speaker; 5. fixing frame; 501. exhaust pipe; 502. air intake pipe; 6. reel; 7. steel cable; 8. main gear; 9. hanging plate; 901. guide hole; 902. jack; 10. fixing block; 11. limiting shaft; 1101. limiting groove; 12. limiting spring; 13. pressing block; 14. ejector rod; 15. rod sleeve; 16. ejector block; 17. clamping block; 18. limiting block; 1801. guide surface; 19. sleeve; 20. protrusion; 21. inserting rod; 22. pressing head; 2201. conical surface; 23. connecting rod; 24. positioning block; 25. clamping strip; 2501. positioning groove; 26. sealing block; 27. driven gear; 2701. notch; 28. ejector pin. DETAILED DESCRIPTION

[0030] like Figure 1-6 As shown, a wall-mounted noise reduction system includes a hanging plate 1 installed on a wall or a beam, a supporting plate 101 is fixedly installed on the hanging plate 1, the supporting plate 101 is horizontally arranged, and a fixing frame 5 is hung below the supporting plate 101, and a speaker 4 is installed in the fixing frame 5. A noise reducer is installed inside the speaker 4 to improve the sound quality and user experience of the sound system. The noise reduction technology in the speaker 4 is a mature technical means, and its specific structure and working principle are not described in detail here. A battery connected to the speaker 4 is installed in the fixing frame 5, which is conducive to providing power for the speaker 4. Of course, it also The speaker 4 can be powered by wireless charging. L-shaped clips 25 are fixedly installed on both sides of the top surface of the fixed frame 5. The two clips 25 are symmetrically distributed relative to the fixed frame 5, and the openings of the clips 25 face outward. Hanging plates 9 that cooperate with the clips 25 are slidably provided on both sides of the bottom of the support plate 101. Similarly, the hanging plates 9 are set to be L-shaped. Specifically, when the fixed frame 5 is hoisted to the support plate 101, the two hanging plates 9 are driven to move closer to the center of the support plate 101. During this process, the hanging plates 9 will be inserted into the bottom of the clips 25 and limit the fixed frame 5 to the bottom of the support plate 101.

[0031] A limiting shaft 11 is provided on the support plate 101 to cooperate with the hanging plate 9. The limiting shaft 11 and the hanging plate 9 cooperate with each other through a limiting assembly, so that the rotation of the limiting shaft 11 can drive the hanging plate 9 to move along the length direction of the support plate 101;

[0032] Furthermore, a fixed block 10 is provided at the center of the support plate 101, and a sleeve 19 is fixedly provided on one end of the limit shaft 11 close to the fixed block 10, and a driven gear 27 is sleeved on the outside of the sleeve 19. A rotating shaft 3 is provided above the support plate 101, and a main gear 8 meshing with the driven gear 27 is fixedly provided on the rotating shaft 3. A rod sleeve 15 is installed below the fixed block 10, and in order to be able to lift the fixed frame 5, a reel 6 is fixedly provided on the outside of the rotating shaft 3, and the reel 6 is connected to the fixed frame 5. A steel cable 7 is connected between the frames 5. Through this structure, when the fixed frame 5 is lifted to the support plate 101 by the steel cable 7, the top surface of the fixed frame 5 will compress the rod sleeve 15, so that the driven gear 27 can be engaged with the sleeve 19, so that the rotating shaft 3 can drive the limit shaft 11 to rotate synchronously during the rotation process, and the limit shaft 11 can drive the two hanging plates 9 to approach the clamping strip 25 on the top of the fixed frame 5 through the limit assembly during the rotation process, thereby installing the fixed frame 5 on the bottom of the support plate 101.

[0033] like Figure 2-6 As shown in Figures 9-10, a through hole is provided on the hanging plate 9 to cooperate with the limiting shaft 11, so that the hanging plate 9 is slidably sleeved on the outside of the limiting shaft 11, and the limiting component includes a limiting block 18 arranged on the inner wall of the through hole and elastically arranged with the hanging plate 9, and a limiting groove 1101 is provided on the outer circumference of the limiting shaft 11 to cooperate with the limiting block 18. The limiting groove 1101 is set in a spiral shape. When one end of the limiting block 18 is inserted into the limiting groove 1101, the rotation of the limiting shaft 11 can drive the hanging plate 9 to move.

[0034] A plurality of notches 2701 are evenly formed on the inner wall of the driven gear 27, and an insertion rod 21 that cooperates with the notches 2701 is elastically provided on the sleeve 19. A pressure head 22 is slidably provided at the end of the inner cavity of the sleeve 19. The end of the pressure head 22 close to the insertion rod 21 has a conical surface 2201, and the bottom end surface of the insertion rod 21 is inclined and contacts the pressure head 22. With this structure, when the pressure head 22 moves toward the inside of the sleeve 19, it can squeeze the insertion rod 21, and then insert one end of the insertion rod 21 into the notch 2701, so that the driven gear 27 is engaged with the sleeve 19;

[0035] Furthermore, a push rod 14 is slidably provided at the top end of the rod sleeve 15, and the push rod 14 is elastically connected to the rod sleeve 15. The push rod 14 is inserted into the fixed block 10 and slides with it. The top end of the push rod 14 is fixedly connected to the pressure block 13, and the pressure head 22 is fixedly provided with a connecting rod 23 at one end close to the fixed block 10. One end of the connecting rod 23 extends into the fixed block 10 and contacts with the pressure block 13, and the opposite sides of the pressure block 13 and the connecting rod 23 are both inclined, so that the pressure block 13 can squeeze the connecting rod 23 during the upward movement, and the above-mentioned connecting rod 23 slides with the fixed block 10.

[0036] Slide grooves are provided at both sides of the fixed frame 5, and sealing blocks 26 are slidingly provided in the slide grooves, and the sealing blocks 26 are sealed with the slide grooves. An air intake pipe 502 and an exhaust pipe 501 are fixedly installed on the side of the fixed block 10, and the air intake pipe 502 and the exhaust pipe 501 are both connected to the slide grooves, wherein a one-way solenoid valve is installed on the air intake pipe 502, and a valve is installed on the exhaust pipe 501. One end of the above-mentioned steel cable 7 is fixedly connected to the reel 6, and the other end of the steel cable 7 extends into the slide groove and is connected to the sealing block 26, and the steel cable 7 can slide relative to the fixed frame 5.

[0037] When the cam 25 is in the bottom position, the cam 25 is in the bottom position, and the cam 25 is in the bottom position, so that the cam 25 is in the bottom position, and the cam 25 is in the bottom position, so that the cam 25 is in the bottom position, and the cam 25 is in the bottom position, so that the cam 25 is in the bottom position, and the cam 25 is in the bottom position, so that the cam 25 is in the bottom position, and the cam 25 is in the bottom position, so that the cam 25 is in the bottom position, When the cam 101 is in the state of being in contact with the support plate 101, the locking plate 25 is in the state of being in contact with the support plate 101.

[0038] When the speaker 4 needs to be maintained or repaired, the rotating shaft 3 can be driven to move in the reverse direction. The engagement of the main gear 8 and the driven gear 27 can drive the limit shaft 11 to rotate in the reverse direction, thereby driving the hanging plate 9 to move away from the card strip 25 and eventually staggered with the card strip 25, which is conducive to lowering the fixed frame 5.

[0039] As a further extension of the above scheme, refer to Figure 5 As shown, a guide surface 1801 is provided at one end of the limit block 18 inserted into the limit groove 1101. The guide surface 1801 is tilted and arc-shaped as a whole. As the pressure of the limit groove 1101 on the limit block 18 increases, the limit block 18 can be squeezed into the hanging plate 9, thereby disengaging the limit block 18 from the limit shaft 11.

[0040] Furthermore, a groove is provided on the inner wall of the through hole, which is slidably engaged with the limit block 18. A spring is fixedly installed between the inner end surface of the groove and the limit block 18. A T-slot is provided on the inner wall of the groove, and a socket 902 connected to the T-slot is provided on the side of the hanging plate 9. A top block 16 is elastically provided in the T-slot. A clamping block 17 is elastically installed on the side of the limit block 18 close to the top block 16, and the clamping block 17 cooperates with the T-slot.

[0041] Furthermore, a through slot is provided on the support plate 101, and the limit shaft 11 is rotatably mounted in the through slot. A thimble 28 is fixedly mounted on the inner end surface of the through slot. The thimble 28 and the socket 902 are on the same horizontal line. A limit spring 12 is fixedly mounted between the inner end surface of the through slot and the hanging plate 9.

[0042] In actual use, when the speaker 4 needs to be lowered, the one-way solenoid valve can be opened, and the rotating shaft 3 can continue to rotate forward to reel in the steel cable 7. At this time, the sealing block 26 will continue to move upward along the slide groove, and the engagement of the main gear 8 and the driven gear 27 can drive the limit shaft 11 to continue to rotate. As the side of the limit groove 1101 squeezes the guide surface 1801 on the limit block 18, the limit block 18 can be compressed into the hanging plate 9, so that the limit block 18 is staggered from the limit shaft 11, and then the hanging plate 9 is driven by the limit spring 12 to reset in the direction away from the card strip 25. When the hanging plate 9 moves to the ejector pin 28, the ejector pin 28 can It can be inserted into the socket 902 and squeeze the top block 16, and the block 17 can be squeezed out of the T-slot through the top block 16, so that the limit block 18 can be reset, and at this time, the tension of the steel cable 7 on the fixed frame 5 can reduce the pressure between the hanging plate 9 and the card strip 25 to a minimum, thereby helping to reduce the friction between the hanging plate 9 and the card strip 25, which is beneficial to the overall stable operation of the equipment. Thereafter, the rotating shaft 3 is driven to rotate in the opposite direction to release the steel cable 7, so that the fixed frame 5 moves downward. When the fixed frame 5 moves downward and is offset from the rod sleeve 15, the pressing block 13 and the pressure head 22 can be reset, so that the insertion rod 21 is disengaged from the notch 2701.

[0043] To sum up, this device cooperates with the sliding groove through the provided sealing block 26, which is beneficial to the up and down movement of the fixed frame 5 and the audio system 4 installed therein, and when the fixed frame 5 is lifted to the support plate 101, the limiting shaft 11 can be driven to rotate through the rotating shaft 3, thereby prompting the two hanging plates 9 to move closer to the center of the support plate 101, which is beneficial to correct the position of the fixed frame 5, and the fixed frame 5 can be installed under the support plate 101 through the cooperation between the hanging plate 9 and the card strip 25. In addition, in the process of the hanging plate 9 moving relative to the card strip 25, the steel cable 7 is in a pulled-up state on the fixed frame 5, so that the force between the hanging plate 9 and the card strip 25 is small, which is beneficial to protect the relevant components in the device and extend the overall service life of the device.

[0044] like Figure 1-2 As shown, bosses are fixedly installed on both sides of the top of the support plate 101, and both ends of the rotating shaft 3 are rotatably matched with the bosses through bearings. In addition, a motor is installed on the support plate 101, and the motor and the rotating shaft 3 are connected through a belt 2 to drive the rotating shaft 3 to rotate. Of course, in specific applications, the motor can also drive the rotating shaft 3 to rotate through gear transmission.

[0045] The bottom end of the steel cable 7 can be fixedly connected to the sealing block 26 through a connector;

[0046] In addition, during the specific application process, a pressure sensor can be installed on the top surface of the fixed frame 5. The pressure sensor is electrically connected to the one-way solenoid valve through a PLC or a single-chip microcomputer. Through this structure, when the fixed frame 5 is pulled to the support plate 101 so that the pressure sensor contacts the rod sleeve 15, the one-way solenoid valve can be driven, thereby allowing external gas to enter the slide groove.

[0047] like Figure 4-6 As shown, in actual use, a guide rod can be fixedly installed in the through groove, and the guide rod passes through the hanging plate 9 and slides with it, which is conducive to the stable movement of the hanging plate 9. Furthermore, the above-mentioned fixed block 10 is fixedly installed in the through groove, and a support block is rotatably installed on the outside of the sleeve 19. The support block is fixed in the through groove, and the end of the limit shaft 11 away from the sleeve 19 is connected to the support plate 101 through a bearing.

[0048] A first spring is fixedly arranged between the inner end surface of the rod sleeve 15 and the push rod 14. The fixed block 10 is provided with an accommodating chamber that slides with the pressure block 13. The end of the connecting rod 23 away from the pressure head 22 extends into the accommodating chamber.

[0049] The side of the limit block 18 is provided with a mounting groove that slides with the clamping block 17 . Second springs are fixedly provided between the inner end surface of the T-slot and the top block 16 , and between the inner end surface of the mounting groove and the clamping block 17 .

[0050] A guide hole 901 connected to the groove is also provided on the hanging plate 9, and the limit block 18 can be sealed with the groove. This structure can slow down the movement speed of the limit block 18 in the groove, and in the process of lowering the fixed frame 5, it can avoid the limit block 18 from quickly resetting and cooperating with the limit groove 1101.

[0051] A cross groove is provided on the cylindrical body of the sleeve 19, and protrusions 20 are fixedly provided on both sides of the insertion rod 21. The protrusion 20 and the insertion rod 21 are both slidably provided in the cross groove, and a third spring is installed between the inner end surface of the cross groove and the protrusion 20. The third spring is located on the side of the protrusion 20 close to the notch 2701.

[0052] like Figure 7-8As shown, a rectangular groove is provided on one side of the hanging plate 9 close to the support plate 101, a positioning block 24 is slidably installed in the rectangular groove, and a fourth spring is fixedly provided between the top block 16 and the inner end surface of the rectangular groove, the top end of the top block 16 is set as an inclined surface, and a plurality of positioning grooves 2501 that cooperate with the positioning block 24 are provided on one side of the clip 25 close to the fixed frame 5. When the clip 25 falls onto the hanging plate 9, the positioning block 24 can be inserted into the positioning groove 2501, thereby preventing the hanging plate 9 from moving relative to the clip 25.

Claims

1. A wall-mounted noise reduction device, comprising a hanging plate and a support plate connected to the hanging plate, a fixing frame suspended below the support plate, a speaker mounted within the fixing frame, and L-shaped clips fixedly mounted on both sides of the top surface of the fixing frame, characterized in that: The two clips are symmetrically distributed relative to the fixed frame, and the openings of the clips face outward. Hanging plates that cooperate with the clips are slidably provided on both sides of the bottom of the support plate. The hanging plates are arranged in an L shape. When the fixed frame is hoisted to the support plate, the two hanging plates can be driven to move closer to the center of the support plate. During this process, the hanging plates will be inserted into the bottom of the clips and limit the fixed frame to the bottom of the support plate. A limiting shaft that cooperates with the hanging plate is provided on the support plate, and the limiting shaft and the hanging plate are matched through a limiting assembly. The cam is provided with a toothed plate, and the toothed plate is provided with a toothed plate at one end of the toothed plate and a toothed plate at the outside of the toothed plate. A rotating shaft is provided above the supporting plate, and a fixed sleeve on the rotating shaft is provided with a main gear meshing with the driven gear. A rod sleeve is installed below the fixed block, and a reel is provided on the fixed sleeve outside the rotating shaft. A steel cable is connected between the reel and the fixed frame. When the steel cable lifts the fixed frame to the supporting plate and compresses the rod sleeve, the driven gear can be engaged with the sleeve, so that the rotating shaft can drive the limiting shaft to rotate synchronously during rotation, and the limiting shaft can drive the two hanging plates to approach the card strip at the top of the fixed frame during rotation through the limiting assembly.

2. The wall-mounted noise reduction device according to claim 1, characterized in that: The hanging plate is provided with a through hole that cooperates with the limiting shaft, and the limiting component includes a limiting block arranged on the inner wall of the through hole and elastically arranged with the hanging plate, and a limiting groove that cooperates with the limiting block is provided on the outer circumference of the limiting shaft, and the limiting groove is arranged in a spiral shape.

3. The wall-mounted noise reduction device according to claim 2, characterized in that: A plurality of notches are evenly provided on the inner wall of the driven gear, and an insertion rod that cooperates with the notches is elastically provided on the sleeve, and a pressure head is slidably provided at the inner cavity of the sleeve, and the end of the pressure head close to the insertion rod is a conical surface, and the bottom end face of the insertion rod is inclined and contacts with the pressure head, and a push rod is slidably provided at the top end of the rod sleeve, and the push rod is elastically connected to the rod sleeve, and the push rod is inserted into the fixed block and slidably cooperates with it, and the top end of the push rod is fixedly connected to the pressure block, and the end of the pressure head close to the fixed block is fixedly provided with a connecting rod, and the side of the pressure block opposite to the connecting rod is inclined.

4. The wall-mounted noise reduction device according to claim 3, characterized in that: Slide grooves are provided at both sides of the fixed frame, and sealing blocks are slidingly provided in the slide grooves, and the sealing blocks are sealed with the slide grooves. An intake pipe and an exhaust pipe are fixedly installed on the side of the fixed block, and the intake pipe and the exhaust pipe are both connected with the slide grooves, wherein a one-way solenoid valve is installed on the intake pipe, and a valve is installed on the exhaust pipe. One end of the steel cable is fixedly connected to the reel, and the other end of the steel cable extends into the slide groove and is connected to the sealing block.

5. The wall-mounted noise reduction device according to claim 2, characterized in that: The end of the limit block inserted into the limit groove is provided with a guide surface, and the guide surface is tilted as a whole and is arc-shaped. A groove that slides with the limit block is provided on the inner wall of the through hole, and a spring is fixedly installed between the inner end surface of the groove and the limit block. A T-slot is provided on the inner wall of the groove, and a socket connected to the T-slot is provided on the side of the hanging plate. A top block is elastically provided in the T-slot, and a card block is elastically installed on the side of the limit block close to the top block, and the card block cooperates with the T-slot.

6. The wall-mounted noise reduction device according to claim 5, characterized in that: A through slot is provided on the support plate, the limit shaft is rotatably installed in the through slot, a thimble is fixedly installed at the inner end surface of the through slot, the thimble and the socket are on the same horizontal line, and a limit spring is fixedly installed between the inner end surface of the through slot and the hanging plate.

7. The wall-mounted noise reduction device according to claim 3, characterized in that: A first spring is fixedly arranged between the inner end surface of the rod sleeve and the push rod.

8. The wall-mounted noise reduction device according to claim 3, characterized in that: The fixing block is provided with a receiving chamber which is in sliding cooperation with the pressing block, and one end of the connecting rod away from the pressing head extends into the receiving chamber.

9. The wall-mounted noise reduction device according to claim 5, characterized in that: The hanging plate is provided with a guide hole connected to the groove, and the limiting block is in sealing cooperation with the groove.

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