A ceiling-mounted multi-angle sound amplification speaker

Abstract

The present invention belongs to the technical field of loudspeaker boxes, specifically, a ceiling-mounted multi-angle loudspeaker box, including a body, a sound module is provided on the surface of the body, a protective structure is provided on the upper end of the body, and a suction cup is provided on the upper end of the protective structure; the protective structure includes: a sliding rod, a plurality of sliding rods are provided around the body; a lower protective block, the lower protective block is slidably connected to the arc surface of the sliding rod; an upper protective block, the upper protective block is slidably connected to the upper end of the lower protective block. By setting the upper protective block and the lower protective block, when the body is adsorbed on the roof surface and working, if the body falls off, before falling off, the lower protective block will move to the lower end of the sliding rod and contact the limit block, so that when the body falls, the sharp surface of the body can be prevented from contacting the ground or the person below, which can not only protect the body and the person below, but also ensure that the sound quality of the body will not be affected when it is working.

Description

Technical Field

[0001] The invention belongs to the technical field of sound amplification speakers, in particular to a ceiling-mounted multi-angle sound amplification speaker. Background Art

[0002] A speaker is generally composed of a front shell, a body and a speaker. A ceiling speaker is an audio device installed above the ceiling. It is mainly used in conference rooms and some houses with larger spaces. The installation methods generally include fixed connection and adsorption connection. Then, in order to make the sound propagation range wider, the four sides of the ceiling speaker will be set to sound-emitting type, and the switch of the sound-emitting surface can be adjusted at will according to needs to achieve multi-angle sound amplification.

[0003] A patent with publication number CN207166744U discloses a ceiling speaker, including a front shell, a rear cover and a speaker. A accommodating cavity and a through hole are provided on the front shell. The speaker is arranged in the accommodating cavity on the front shell. After one end of the speaker is adapted into the through hole on the front shell, the speaker and the front shell are fastened as a whole. When the speaker is working, the forces generated by the first low-frequency radiator and the second low-frequency radiator are a pair of opposite forces. In this way, by adding the second low-frequency radiator, the vibration force generated by the first low-frequency radiator when it is working can be offset.

[0004] There are still some problems in the actual application of the above scheme. In order to be able to remove or relocate at any time and not damage the latex paint on the roof, some ceiling speakers are connected by adsorption. Although the internal structure of the above speakers reduces the vibration of the speakers when they are working, if the quality of the latex paint on the roof is not good, coupled with the vibration of the speakers when they are working, it is easy for the adsorption effect of the speakers to be poor, and eventually the speakers will fall, which will not only cause harm to the people below, but also damage the speakers. Moreover, this phenomenon can only be discovered when the speakers are adsorbed on the roof and working.

[0005] To this end, the present invention provides a ceiling-mounted multi-angle sound amplification 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 problem is: a ceiling-mounted multi-angle sound amplification speaker described in the present invention includes a body, a sound module is provided on the surface of the body, a protective structure is provided on the upper end of the body, and a suction cup is provided on the upper end of the protective structure; the protective structure includes: a sliding rod, a plurality of sliding rods are arranged around the body; a lower protective block, the lower protective block is slidably connected to the arc surface of the sliding rod; an upper protective block, the upper protective block is slidably connected to the upper end of the lower protective block; a compression spring, the compression spring is sleeved on the surface of the sliding rod, and the upper end of the compression spring is connected to the upper protective block, and the lower end of the compression spring is connected to the lower protective block; a protective frame, the protective frame is arranged at the upper end of the body; an abutment plate, the abutment plate is rotatably connected to the lower end of the lower protective block, and the abutment plate abuts against the lower surface of the lower protective block in the initial state.

[0008] Preferably, the protective structure also includes: a connecting rod, which is arranged below the suction cup; a snap-in groove, which is opened on the lower surface of the connecting rod; a first telescopic rod, which is slidably connected to the inside of the connecting rod; a snap-in ball, which is arranged at the upper end of the first telescopic rod and is snap-into the snap-in groove in an initial state; a pulling spring, which is arranged at the lower end of the first telescopic rod; a threaded ring, which is connected to the first telescopic rod; a screw, which is arranged inside the body and is threadedly connected to the threaded ring, and the screw is connected to the abutment plate.

[0009] Preferably, a limiting ring is provided at one end of the upper end of the sliding rod close to the upper protective block, and the limiting ring abuts against the upper surface of the upper protective block.

[0010] Preferably, a limit block is provided on the lower surface of the sliding rod, and the limit block abuts against the lower surface of the lower protective block, and the limit block is made of soft material.

[0011] Preferably, four suction cups are provided, and the suction cups are evenly distributed on the upper end of the body.

[0012] Preferably, a parachute is provided at the upper end of the protection frame, and the parachute fits with the protection frame in an initial state.

[0013] Preferably, slide grooves are provided at both ends of the parachute, an adaption rod is slidably connected inside the slide groove, and the adaption rod is located at the lower end of the slide groove in an initial state.

[0014] Preferably, a pressing bar is provided on one side of the upper protective block, and a rotating shaft is provided at one end of the protective frame close to the slide groove. The arc surface of the rotating shaft is rotatably connected to a rotating rod, and one end of the rotating rod is abutted against the pressing bar. A sliding block is provided at the other end of the rotating rod, and the sliding block is connected to the adaptation rod.

[0015] Preferably, a second telescopic rod is provided at one end of the sliding block close to the rotating shaft, and the second telescopic rod slides inside the rotating rod, and an adjusting spring is sleeved on the surface of the second telescopic rod.

[0016] Preferably, the diameter of the adaptable rod is smaller than the width of the slide groove, and the adaptable rod is made of soft material.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The ceiling-mounted multi-angle sound amplification speaker described in the present invention is provided with an upper protective block and a lower protective block. When the body is adsorbed on the roof surface and working, if the body falls off, before falling off, the body will first be separated from the suction cup, and in the process of separation, the abutment plate will rotate, so that the compression spring releases the elastic force, and the lower protective block will eventually move to the lower end of the sliding rod and contact with the limit block, so that when the body falls, the sharp surface of the body can be prevented from contacting the ground or the person below, which can not only protect the body and the person below, but also the triggered pop-up protection can ensure that the sound quality of the body will not be affected when it is working.

[0019] 2. The ceiling-mounted multi-angle sound amplification speaker described in the present invention is provided with a parachute. When the body of the speaker falls off from the roof, the lower protection block will also drive the upper protection block to move a certain distance. At this time, the pressing bar at one end of the upper protection block will come into contact with the rotating rod and drive the rotating rod to rotate. Then the adaption rod will also move upward, and finally there will be a distance between the parachute and the protection frame for air to flow. At this time, the parachute will also be deployed to slow down the falling speed of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0022] Figure 2 is a partial view of the first embodiment of the present invention;

[0023] Figure 3 It is a connection diagram of the sliding rod and the connecting rod of the present invention;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 6 is a connection diagram of the connecting rod and the first telescopic rod of the present invention;

[0027] Figure 7 is a side view of the body of the present invention;

[0028] Figure 8 It is a position diagram of the protection frame and the parachute of the present invention;

[0029] Fig. 9 yes Figure 8 A partial enlarged view of point C in the middle;

[0030] In the figure: 1. body; 2. sound module; 3. suction cup; 4. protection structure; 401. sliding rod; 402. limit block; 403. lower protection block; 404. upper protection block; 405. compression spring; 406. connecting rod; 407. pulling spring; 408. first telescopic rod; 409. limit ring; 410. abutment plate; 411. threaded ring; 412. screw; 413. snap-on ball; 414. snap-on groove; 415. protection frame; 416. parachute; 417. pressing bar; 418. rotating rod; 419. rotating shaft; 420. second telescopic rod; 421. sliding block; 422. adaptation rod; 423. slide groove; 424. adjustment spring. DETAILED DESCRIPTION

[0031] 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. Embodiment 1

[0032] like Figures 1 to 9 As shown, a ceiling-mounted multi-angle sound amplification speaker of an embodiment of the present invention includes a body 1, a sound module 2 is provided on the surface of the body 1, a protective structure 4 is provided on the upper end of the body 1, and a suction cup 3 is provided on the upper end of the protective structure 4; the protective structure 4 includes: a sliding rod 401, a plurality of sliding rods 401 are arranged around the body 1; a lower protective block 403, the lower protective block 403 is slidably connected to the arc surface of the sliding rod 401; an upper protective block 404, the upper protective block 404 is slidably connected to the lower protective block The upper end of 403; a compression spring 405, which is sleeved on the surface of the sliding rod 401, and the upper end of the compression spring 405 is connected to the upper protective block 404, and the lower end of the compression spring 405 is connected to the lower protective block 403; a protective frame 415, which is arranged at the upper end of the body 1; an abutment plate 410, which is rotatably connected to the lower end of the lower protective block 403, and the abutment plate 410 abuts against the lower surface of the lower protective block 403 in the initial state.

[0033] Specifically, a ceiling-mounted multi-angle sound amplification speaker of the scheme is suitable for rooms with larger spaces such as conference rooms. When the speaker is started, the body 1 first receives an electrical signal input from an audio device, and then the power amplifier converts the electrical signal into a larger current signal to provide sufficient energy for subsequent speaker driving. A sound module 2 is set on each surface of the body 1, and the sound module 2 includes a speaker, and each speaker operates independently. If there is only a user sitting at one end of the body 1, then at this time, it is only necessary to transmit a signal to the speaker at the end of the user. The electromagnetic coil in the speaker is affected by the audio signal, and a magnetic field change is generated, causing the diaphragm to vibrate. The vibration of the diaphragm causes the air to compress and expand, thereby forming sound. The body 1 can adjust the angle of sound propagation required according to different scenes to achieve multi-angle propagation of sound. Then, in order to reduce the space occupied by the body 1 in the room, a suction cup 3 is set at the upper end of the body 1, so that the body 1 can be installed on the ceiling, which is very convenient. However, when the body 1 is working, if the quality of the latex paint on the ceiling is poor, combined with the vibration of the body 1 when working, it is easy to cause the suction cup 3 to be adsorbed. The effect is not good, so that the machine body 1 falls, and finally causes harm to the personnel below and the machine body 1. For this reason, a protective structure 4 is set at the upper end of the machine body 1. In the initial state, the upper protective block 404 and the lower protective block 403 are both above the machine body 1, so as not to affect the sound of the sound module 2. When the machine body 1 falls, the abutment plate 410 is started to rotate. The abutment plate 410 will no longer contact with the lower protective block 403 during the rotation process. At this time, the compression spring 405 will release the elastic force, and finally push the lower protective block 403 downward, and the lower protective block 403 will move along Move along the edge of the body 1, and finally the lower protection block 403 will move to the bottom of the body 1 to protect the lower surface and edges of the body 1, and the upper protection block 404 will also be pulled to the edge of the upper end of the body 1 by the lower protection block 403, so as to protect the edge of the upper part of the body 1, and then start the abutment plate 410, the abutment plate 410 will be reset, so as to abut against the upper surface of the upper protection block 404, so that the positions of the upper protection block 404 and the lower protection block 403 are fixed, and the protection state is always maintained before the body 1 contacts the ground.

[0034] like Figures 1 to 6As shown, the protective structure 4 also includes: a connecting rod 406, which is arranged below the suction cup 3; a snap-in groove 414, which is opened on the lower surface of the connecting rod 406; a first telescopic rod 408, which is slidably connected to the inside of the connecting rod 406; a snap-in ball 413, which is arranged at the upper end of the first telescopic rod 408, and the snap-in ball 413 is snap-in with the snap-in groove 414 in the initial state; a pulling spring 407, which is arranged at the lower end of the first telescopic rod 408; a threaded ring 411, which is connected to the first telescopic rod 408; a screw 412, which is arranged inside the body 1, and the screw 412 is threadedly connected to the threaded ring 411, and the screw 412 is connected to the abutment plate 410.

[0035] Specifically, since the clamping force between the clamping ball 413 and the clamping groove 414 is smaller than the adsorption force between the suction cup 3 and the ceiling, when the body 1 vibrates and causes the body 1 to fall, the body 1 will first drive the clamping ball 413 to separate from the clamping groove 414 through the first telescopic rod 408. At this time, under the influence of the force, the first telescopic rod 408 will slide downward inside the connecting rod 406, and the threaded ring 411 connected to the first telescopic rod 408 will also move downward, thereby connecting with the screw 412, and finally causing the screw 412 to drive the abutment plate 410 to rotate, thereby releasing the upper protective block 404 and the lower protective block 403, and then the pulling spring 407 will release the elastic force and push the first telescopic rod 408 downward. At this time, the threaded ring 411 will also move upward, and finally drive the screw 412 to reverse, so that the abutment plate 410 abuts against the upper surface of the upper protective block 404.

[0036] like Figures 1 to 4 As shown, a limiting ring 409 is provided at one end of the upper end of the sliding rod 401 close to the upper protection block 404 , and the limiting ring 409 abuts against the upper surface of the upper protection block 404 .

[0037] Specifically, by setting a limiting ring 409 at the upper end of the sliding rod 401, the upper protection block 404 can be limited when the protection of the body 1 is completed and the upper protection block 404 is pushed to reset, so that the upper protection block 404 is reset and fixed.

[0038] like Figures 1 to 8 As shown, a limit block 402 is provided on the lower surface of the sliding rod 401 , and the limit block 402 abuts against the lower surface of the lower protective block 403 , and the limit block 402 is made of soft material.

[0039] Specifically, by setting the limit block 402, the moving distance of the lower protective block 403 can be limited when the lower protective block 403 pops out, so that the lower protective block 403 can be moved just to the corner below the body 1 to achieve precise protection.

[0040] like Figures 1 to 8 As shown, four suction cups 3 are provided, and the suction cups 3 are evenly distributed on the upper end of the body 1 .

[0041] Specifically, by setting four suction cups 3 and evenly distributing them at the upper end of the body 1, the adsorption force of the suction cup 3 can be enhanced to reduce the probability of the body 1 falling, and the clamping force between the clamping ball 413 and the clamping groove 414 can be made smaller than the adsorption force between the suction cup 3 and the ceiling, so that before the body 1 falls, the disengagement work of the clamping ball 413 and the clamping groove 414 can be carried out smoothly. Embodiment 2

[0042] like Figures 7 to 9 As shown, compared with Example 1, another implementation of the present invention is that a parachute 416 is provided at the upper end of the protection frame 415, and the parachute 416 fits with the protection frame 415 in the initial state.

[0043] Specifically, by arranging a parachute 416 at the upper end of the protective frame 415, when the fuselage 1 falls, the parachute 416 is started and moves upward, so that there is a distance between the parachute 416 and the protective frame 415, and the distance is available for air flow. Eventually, the parachute 416 will open, which can not only slow down the falling speed of the fuselage 1, but also make the fuselage 1 fall vertically, thereby avoiding the occurrence of unstable falling position.

[0044] like Figures 7 to 9 As shown, two ends of the parachute 416 are provided with slide grooves 423 , and an adaption rod 422 is slidably connected inside the slide groove 423 , and the adaption rod 422 is located at the lower end of the slide groove 423 in the initial state.

[0045] Specifically, when the body 1 falls, the adaption rod 422 is activated, and the adaption rod 422 moves upward, so that the track for the parachute 416 to move upward is not bound, and the parachute 416 is finally opened.

[0046] like Figures 7 to 9 As shown, a pressing strip 417 is provided on one side of the upper protective block 404, and a rotating shaft 419 is provided on one end of the protective frame 415 close to the slide groove 423. The arc surface of the rotating shaft 419 is rotatably connected to a rotating rod 418, and one end of the rotating rod 418 is abutted against the pressing strip 417, and a sliding block 421 is provided on the other end of the rotating rod 418, and the sliding block 421 is connected to the adaptation rod 422.

[0047] Specifically, when the upper protective block 404 moves downward, the pressing bar 417 at one end of the upper protective block 404 will contact the rotating rod 418, eventually causing the rotating rod 418 to rotate around the rotating shaft 419, and finally the sliding block 421 at the other end of the rotating rod 418 will drive the adaption rod 422 to move upward, eventually causing the parachute 416 to open.

[0048] like Figures 7 to 9 As shown, a second telescopic rod 420 is provided at one end of the sliding block 421 close to the rotating shaft 419 , and the second telescopic rod 420 slides inside the rotating rod 418 , and an adjusting spring 424 is sleeved on the surface of the second telescopic rod 420 .

[0049] Specifically, by providing the second telescopic rod 420 , when the sliding block 421 drives the adapting rod 422 to slide on the inner wall of the sliding groove 423 , the adjusting spring 424 will be gradually compressed, so that the sliding position of the adapting rod 422 can be kept upward.

[0050] like Figures 7 to 9 As shown, the diameter of the adaptable rod 422 is smaller than the width of the slide groove 423, and the adaptable rod 422 is made of soft material.

[0051] Specifically, since the diameter of the adaptable rod 422 is smaller than the width of the slide groove 423 , the adaptable rod 422 can be prevented from contacting the inner wall of the slide groove 423 during the rotation of the rotating rod 418 , thereby eventually wearing out the surface of the parachute 416 .

[0052] Working principle: When the machine body 1 is working, firstly, the suction cup 3 is adsorbed on the ceiling, and then the machine body 1 is started. The machine body 1 will receive the electrical signal input from the audio device, and then the power amplifier will convert the electrical signal into a larger current signal to provide sufficient energy for the subsequent speaker drive. The sound module 2 is set on each surface of the machine body 1. The sound module 2 includes a speaker, and each speaker operates independently. If there is only a user sitting at one end of the machine body 1, then at this time, only the signal needs to be transmitted to the speaker at the end of the user. The electromagnetic coil in the speaker is affected by the audio signal, generating a magnetic field change, causing the diaphragm to vibrate, and the vibration of the diaphragm causes the air to compress and expand, thereby forming sound. The machine body 1 can be adjusted according to different scenes. The angle at which the sound needs to be propagated is used to realize the multi-angle propagation of the sound. When the body 1 is working, if the quality of the latex paint on the ceiling is not good, combined with the vibration of the body 1 when working, it is easy to make the adsorption effect of the suction cup 3 poor, so that the body 1 falls. Since the clamping force between the clamping ball 413 and the clamping groove 414 is smaller than the adsorption force between the suction cup 3 and the ceiling, when the body 1 vibrates and causes the body 1 to fall, the body 1 will first drive the clamping ball 413 to separate from the clamping groove 414 through the first telescopic rod 408. At this time, under the influence of the force, the first telescopic rod 408 will slide downward inside the connecting rod 406, and the threaded ring 411 connected to the first telescopic rod 408 will also move downward, thereby connecting with the screw 412, and finally making the screw 4 12 drives the abutment plate 410 to rotate. The abutment plate 410 will no longer contact the lower protection block 403 during the rotation process. At this time, the compression spring 405 will release the elastic force, and finally push the lower protection block 403 downward, and the lower protection block 403 will move along the edge of the machine body 1. Finally, the lower protection block 403 will move to the bottom of the machine body 1 to protect the lower surface and edges of the machine body 1, and the upper protection block 404 will also be pulled to the edge of the upper end of the machine body 1 by the lower protection block 403, so as to protect the edge of the upper part of the machine body 1. Subsequently, the pulling spring 407 will release the elastic force and push the first telescopic rod 408 downward. At this time, the threaded ring 411 will also move upward, and finally drive the screw rod 412 to reverse, so that the abutment plate 410 is in contact with the upper surface of the upper protection block 404, so that the positions of the upper protection block 404 and the lower protection block 403 are fixed, and the protection state is always maintained before the body 1 contacts the ground, and when the upper protection block 404 moves downward, the pressing bar 417 at one end of the upper protection block 404 will contact the rotating rod 418, and finally the rotating rod 418 will rotate around the rotating shaft 419 as the axis, and finally the sliding block 421 at the other end of the rotating rod 418 will drive the adaption rod 422 to move upward, at this time, the upward movement track of the slow parachute 416 is not bound, and the slow parachute 416 will move upward, so that there is a distance between the slow parachute 416 and the protection frame 415, and the distance is available for air flow, and finally the slow parachute 416 will open,Not only can the falling speed of the machine body 1 be slowed down, but the machine body 1 can also be made to fall vertically, thereby avoiding the occurrence of an unstable falling position.

[0053] 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 ceiling-mounted multi-angle sound amplification speaker, characterized in that: It comprises a body (1), a sound-generating module (2) is provided on the surface of the body (1), a protective structure (4) is provided at the upper end of the body (1), and a suction cup (3) is provided at the upper end of the protective structure (4); The protective structure (4) comprises: Sliding rods (401), a plurality of the sliding rods (401) are arranged around the machine body (1); A lower protective block (403), wherein the lower protective block (403) is slidably connected to the arc surface of the sliding rod (401); An upper protection block (404), wherein the upper protection block (404) is slidably connected to the upper end of the lower protection block (403); A compression spring (405), wherein the compression spring (405) is sleeved on the surface of the sliding rod (401), and the upper end of the compression spring (405) is connected to an upper protective block (404), and the lower end of the compression spring (405) is connected to a lower protective block (403); A protective frame (415), wherein the protective frame (415) is arranged at the upper end of the machine body (1); an abutment plate (410), the abutment plate (410) being rotatably connected to the lower end of the lower protection block (403), and the abutment plate (410) being in abutment with the lower surface of the lower protection block (403) in an initial state; A connecting rod (406), wherein the connecting rod (406) is arranged below the suction cup (3); A clamping groove (414), wherein the clamping groove (414) is formed on the lower surface of the connecting rod (406); A first telescopic rod (408), the first telescopic rod (408) being slidably connected inside the connecting rod (406); A clamping ball (413), the clamping ball (413) being arranged at the upper end of the first telescopic rod (408), and the clamping ball (413) being clamped with the clamping groove (414) in an initial state; A pulling spring (407), wherein the pulling spring (407) is arranged at the lower end of the first telescopic rod (408); A threaded ring (411), the threaded ring (411) being connected to the first telescopic rod (408); A screw rod (412) is disposed inside the machine body (1), the screw rod (412) is threadedly connected to the threaded ring (411), and the screw rod (412) is connected to the abutment plate (410).

2. The ceiling-mounted multi-angle sound amplification speaker according to claim 1, characterized in that: A limiting ring (409) is provided at one end of the upper end of the sliding rod (401) close to the upper protection block (404), and the limiting ring (409) abuts against the upper surface of the upper protection block (404).

3. The ceiling-mounted multi-angle sound amplification speaker according to claim 1, characterized in that: A limit block (402) is provided on the lower surface of the sliding rod (401), and the limit block (402) abuts against the lower surface of the lower protection block (403), and the limit block (402) is made of soft material.

4. The ceiling-mounted multi-angle sound amplification speaker according to claim 1, characterized in that: Four suction cups (3) are provided, and the suction cups (3) are evenly distributed on the upper end of the machine body (1).

5. The ceiling-mounted multi-angle sound amplification speaker according to claim 1, characterized in that: A parachute (416) is provided at the upper end of the protection frame (415), and the parachute (416) is in close contact with the protection frame (415) in an initial state.

6. The ceiling-mounted multi-angle sound amplification speaker according to claim 5, characterized in that: Slide grooves (423) are provided at both ends of the parachute (416), and an adaption rod (422) is slidably connected inside the slide groove (423), and the adaption rod (422) is located at the lower end of the slide groove (423) in an initial state.

7. The ceiling-mounted multi-angle sound amplification speaker according to claim 6, characterized in that: A pressing strip (417) is provided on one side of the upper protection block (404); a rotating shaft (419) is provided on one end of the protection frame (415) close to the slide groove (423); a rotating rod (418) is rotatably connected to the circular arc surface of the rotating shaft (419); one end of the rotating rod (418) is in contact with the pressing strip (417); a sliding block (421) is provided on the other end of the rotating rod (418); and the sliding block (421) is connected to the adaption rod (422).

8. The ceiling-mounted multi-angle sound amplification speaker according to claim 7, characterized in that: A second telescopic rod (420) is provided at one end of the sliding block (421) close to the rotating shaft (419), and the second telescopic rod (420) slides inside the rotating rod (418), and an adjusting spring (424) is sleeved on the surface of the second telescopic rod (420).

9. The ceiling-mounted multi-angle sound amplification speaker according to claim 8, characterized in that: The diameter of the adaptable rod (422) is smaller than the width of the slide groove (423), and the adaptable rod (422) is made of a soft material.

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