CN115633281B - Stable sound amplifying structure for Bluetooth loudspeaker box and use method thereof - Google Patents

Abstract

The invention discloses a stable sound amplifying structure for a Bluetooth sound box and a using method thereof. According to the stable type sound amplifying structure for the Bluetooth sound box, disclosed by the invention, the Bluetooth sound box body is moved to the lower part of the corresponding sound amplifying cover through the adjusting assembly, and the sound amplification or reduction is carried out on the volume of the bell mouth through the sound amplifying cover, so that the ideal volume effect of the Bluetooth sound box is convenient to realize.

Description

Stable sound amplifying structure for Bluetooth loudspeaker box and use method thereof

Technical Field

The invention relates to the technical field of Bluetooth sound boxes, in particular to a stable sound amplifying structure for a Bluetooth sound box and a using method thereof.

Background

The Bluetooth sound box is a built-in Bluetooth chip, replaces traditional wire-connected sound equipment by Bluetooth connection, and is mainly connected with Bluetooth playing equipment such as a mobile phone, a tablet computer or a notebook computer, and mainly adopts a portable sound box, so that the Bluetooth sound box is generally small and portable in appearance, most of common Bluetooth sound boxes in the market are single-track sound boxes, and simultaneously, a plurality of multi-channel sound boxes with excellent tone quality are developed; the method has the characteristics of simple and convenient operation, moderate transmission distance, high transmission speed and the like.

At present, current publication number CN208783012U a stabilize radiating bluetooth speaker with public address structure, including box and first loudspeaker, the box left side is fixed with the pivot of freely pausing through inlaying, and freely pauses the inside support frame that is provided with in pivot left side, the box front end is provided with and falls the cover of making an uproar, and falls the inside left side of cover of making an uproar and be provided with the paraphase hole, first loudspeaker set up in paraphase hole rear, and first loudspeaker right side is provided with second loudspeaker, first loudspeaker rear is provided with independent bluetooth speaker, it is provided with the ventilation hole to fall the cover below of making an uproar, and the ventilation hole rear is provided with the flabellum. This stable radiating bluetooth speaker with public address structure is provided with the rotating structure that support frame, free pause pivot and box constitute, and when the support frame rotated through the free pause pivot, it can be fixed the box to rotatory below the box, can act as the handle when rotatory to the box top, is convenient for remove the device, is provided with the integrated structure that makes an uproar cover and box constitute of falling.

However, the above-mentioned existing sound amplifying structure for bluetooth speaker has the following problems due to its design features:

(1) In the actual use process, the sound size of the Bluetooth sound box is not convenient to adjust according to the actual use requirement;

(2) When the volume adjustment of the Bluetooth sound box by the use of the Bluetooth sound box reaches the volume adjustment effect, and in some special use environments, when the minimum sound of the Bluetooth sound box still needs to be reduced, the sound box is usually shielded through a horn mouth of the Bluetooth sound box, so that an ideal volume effect is realized, and the Bluetooth sound box has the characteristic of inconvenient operation.

Disclosure of Invention

The invention aims to provide a stable type sound amplifying structure for a Bluetooth sound box and a using method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a stable form public address structure for bluetooth speaker, is in including bluetooth speaker body, setting the horn mouth of bluetooth speaker body up end still carries out the public address structure of public address including being used for the horn mouth to the bluetooth speaker body, the public address structure includes that opening public address box body, setting up the public address apron, the even setting of public address box body opening end up end are in expand the sound cover on the public address apron and set up be used for the bluetooth speaker body to remove to the adjusting part of corresponding expand sound cover position in the public address box body.

As a preferable aspect of the present invention, a limit retaining ring is disposed at an upper middle portion of an inner cavity of the sound amplification box body, an outer periphery of the limit retaining ring is fixedly connected with the sound amplification box body, and the limit retaining ring is connected with the sound amplification cover plate through a fastening structure.

As a preferable aspect of the present invention, the sound diffusion covers and the sound amplification cover plate are integrally formed, an inner cavity of each sound diffusion cover abuts against an outer periphery of the bell mouth, so that the sound diffusion covers can sufficiently pick up sound emitted from the bell mouth, sound diffusion holes are uniformly formed in each sound amplification cover, and the aperture ratio of the sound amplification covers increases progressively with the moving direction forward end of the bluetooth speaker body.

In a preferred aspect of the present invention, each of the sound amplifying covers is composed of a protective outer shell, a protective inner shell disposed in an inner cavity of the protective outer shell and having the same curvature as the protective outer shell, and a noise reduction sponge disposed between the protective outer shell and the protective inner shell, wherein the protective inner shell and the protective outer shell are made of sound insulation plate materials.

As a preferable aspect of the present invention, the adjusting component includes a connecting seat fixedly disposed on the lower end surface of the bluetooth speaker body, a moving seat connected to the connecting seat, a screw rod connected to the moving seat and disposed in the length direction of the sound amplification box body, a guide rod fixedly disposed in the inner cavity of the sound amplification box body, a guide hole disposed on the moving seat and adapted to the guide rod, and a driving component for rotating the screw rod, the connecting seat is connected to the upper end surface of the moving seat by screw connection or insertion, and a ball bearing is disposed at a connection position of the screw rod and the inner cavity of the sound amplification box body.

As a preferred aspect of the present invention, the driving assembly includes a first gear connected to the screw, a second gear engaged with the first gear, a rotating shaft connected to the second gear, and an adjustment handle connected to the rotating shaft, the first gear is connected to the screw through a spline, one end of the rotating shaft is connected to the second gear through a spline, and the other end of the rotating shaft is fixedly connected to the adjustment handle.

In a preferred aspect of the present invention, an indicator light is disposed at a central position of the bell mouth, and the indicator light is disposed as an infrared beam of a linear structure.

Through adopting above-mentioned technical scheme, be convenient for rotate the axis of rotation through adjustment handle, thereby be convenient for the axis of rotation drives the second gear and rotates, drive first gear revolve when the second gear revolve, first gear revolve drives the screw rod and rotates, when the screw rod rotates, it uses the screw rod to carry out horizontal migration as the center pin to remove the seat, thereby be convenient for remove the seat and drive the bluetooth speaker body and remove to corresponding public address cover below, utilize adjustment handle to have the convenient characteristics of regulation in addition, adjustment handle is convenient for carry out the control to the turned angle of second gear, and the meshing effect of first gear and second gear, be convenient for control the transmission angle of second gear, realize the control to the number of turns of screw rod in proper order, thereby be convenient for realize the accurate control to removing a shift position.

As a preferable aspect of the present invention, the portable loudspeaker further comprises an angle adjusting member disposed on the lower end surface of the sound amplifying box body, the angle adjusting member comprises a supporting base hinged to one end of the sound amplifying box body and having an upward opening, an electric telescopic push rod disposed in an inner cavity of the supporting base, an installation base fixedly disposed on the lower end surface of the sound amplifying box body, and a connecting pin disposed at a connection position of the electric telescopic push rod and the installation base, and a fixing base of the electric telescopic push rod is connected with the supporting base through a fixing screw.

In a preferred aspect of the present invention, a method for using the stable type sound amplifying structure for a bluetooth speaker comprises:

s1: the adjusting handle is rotated clockwise, and the adjusting handle drives the rotating shaft to rotate clockwise;

s2: the rotating shaft drives the second gear to rotate clockwise, the second gear drives the first gear to rotate when rotating, and the first gear drives the screw to rotate clockwise;

s3: when the screw rotates, the movable seat horizontally moves by taking the screw as a central shaft;

s4: remove the seat and drive the bluetooth speaker body and remove to corresponding public address cover below, the moving direction of bluetooth speaker body, the public address covers the public address and increase gradually, realizes the purpose to the gradual public address of horn mouth.

Compared with the prior art, the invention has the beneficial effects that: the invention has the characteristics of reasonable design and simple operation, and provides a stable sound amplifying structure for a Bluetooth sound box and a using method thereof

According to the Bluetooth sound box, the Bluetooth sound box body is moved to the lower part of the corresponding sound amplification cover through the adjusting assembly, and the sound amplification or reduction is carried out on the volume of the horn mouth through the sound amplification cover, so that the ideal volume effect of the Bluetooth sound box is realized conveniently;

according to the Bluetooth sound box, the indicator lamp of the infrared light beam is arranged at the central position of the bell mouth, so that the indicator lamp is overlapped with the middle position of the sound amplifying cover conveniently, namely, the light of the indicator lamp is emitted out of the central position of the sound amplifying cover in a straight line, which represents the alignment of the bell mouth and the sound amplifying cover, the Bluetooth sound box body is convenient to position in the moving process, and the aim of amplifying the bell mouth is convenient to realize accurately.

According to the invention, the angle adjusting component is arranged on the lower end face of the sound amplifying box body, so that the angle adjusting component is convenient for adjusting the use angle of the sound amplifying box body and accommodating the sound amplifying box body, and further, the sound amplifying box body is convenient to accommodate and is convenient for a user to carry.

Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a Bluetooth speaker body in a stabilized sound amplifying structure for a Bluetooth speaker according to the present invention;

FIG. 2 is a schematic structural diagram of an overall structure of the stabilized type sound amplifying structure for the Bluetooth speaker according to the present invention;

fig. 3 is a schematic view of the stabilized loudspeaker structure of fig. 2 from another perspective according to the present invention;

fig. 4 is a schematic structural view of a sound amplifying cover plate in the stabilized sound amplifying structure for a bluetooth speaker according to the present invention when the sound amplifying cover plate is opened;

fig. 5 is a schematic structural view, partially in cross section, of a stabilized loudspeaker structure for a bluetooth speaker in accordance with the present invention;

fig. 6 is a schematic structural view of the front view of fig. 5 in the stabilized sound amplifying structure for the bluetooth speaker of the present invention;

fig. 7 is a schematic structural diagram of a driving assembly in a stabilized sound amplifying structure for a bluetooth speaker according to the present invention;

fig. 8 is a schematic structural view of a sound amplifying cover in a stabilized sound amplifying structure for a bluetooth speaker according to the present invention.

In the figure: 100. a Bluetooth sound box body; 101. a connecting seat; 102. a bell mouth; 1021. an indicator light; 20. a sound amplifying box body; 201. a sound amplifying cover plate; 202. a mounting seat; 2011. a limit retainer ring; 21. a movable seat; 211. a guide hole; 22. a screw; 221. a ball bearing; 23. a guide bar; 3. a sound amplification cover; 301. a protective housing; 302. a protective inner shell; 303. a noise reduction sponge; 31. a sound expansion hole; 41. a first gear; 42. a second gear; 43. a rotating shaft; 431. an adjusting handle; 5. a support base; 61. an electric telescopic push rod; 62. and connecting a pin shaft.

Detailed description of the preferred embodiments

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.

Examples

Referring to fig. 1, 4, 5, 6, 7 and 8, the present invention provides a technical solution: a stable type sound amplifying structure for a Bluetooth sound box comprises a Bluetooth sound box body 100, a horn mouth 102 arranged on the upper end face of the Bluetooth sound box body 100, and a sound amplifying structure used for amplifying the horn mouth 102 of the Bluetooth sound box body 100, wherein the sound amplifying structure comprises a sound amplifying box body 20 with an upward opening, a sound amplifying cover plate 201 arranged on the upper end face of the opening end of the sound amplifying box body 20, sound amplifying covers 3 evenly arranged on the sound amplifying cover plate 201, and adjusting components arranged in the sound amplifying box body 20 and used for enabling the Bluetooth sound box body 100 to move to the corresponding sound amplifying cover 3 positions.

Please refer to fig. 4, fig. 5, fig. 6 and fig. 7 specifically, including bluetooth speaker body 100, set up the horn mouth 102 at bluetooth speaker body 100 up end, still include the public address structure that is used for carrying out the public address to the horn mouth 102 of bluetooth speaker body 100, the public address structure includes public address box body 20 with opening up, set up the public address apron 201 at public address box body 20 opening up end, in order to facilitate installing bluetooth speaker body 100 in public address box body 20, the well upper portion of the inner chamber of public address box body 20 is provided with spacing retaining ring 2011, the periphery and the public address box body 20 fixed connection of spacing retaining ring 2011, and spacing retaining ring 2011 is connected with public address apron 201 through the block structure, set up public address apron 201 and public address box body 20 into detachable construction, be convenient for carry out quick dismouting with public address apron 201 and public address box body 20, thereby be convenient for install bluetooth speaker body 100 in public address box body 20, and be convenient for overhaul bluetooth speaker body 100.

Referring to fig. 7 and 8, the sound amplifying covers 3 are uniformly disposed on the sound amplifying cover plate 201, the sound amplifying covers 3 and the sound amplifying cover plate 201 are integrally formed, an inner cavity of each sound amplifying cover 3 abuts against the periphery of the horn mouth 102, sound generated by the sound amplifying covers 3 to the horn mouth 102 is conveniently and sufficiently picked up, sound amplifying holes 31 are uniformly disposed on each sound amplifying cover 3, the opening ratio of the sound amplifying covers 3 is increased by the forward end of the bluetooth sound box body 100 in the moving direction, the opening ratio of the sound amplifying holes 31 on the sound amplifying covers 3 represents the sound transmission effect of each sound amplifying cover 3 to the horn mouth 102, the opening ratio is higher, the sound transmission effect is higher, and the purpose of amplifying the horn mouth 102 is conveniently achieved.

Referring to fig. 8 specifically, in order to avoid the vibration of the sound waves generated by the sound amplifying cover 3 while amplifying the sound of the bell mouth 102, each sound amplifying cover 3 is composed of a protective outer shell 301, a protective inner shell 302 arranged in the inner cavity of the protective outer shell 301 and having the same curvature as the protective inner shell, and a noise reduction sponge 303 arranged between the protective outer shell 301 and the protective inner shell 302, the protective inner shell 302 and the protective outer shell 301 are respectively made of sound insulation plates, so that the sound-collecting effect of each sound amplifying cover 3 on the bell mouth 102 is achieved, crosstalk between adjacent sound amplifying covers 3 is avoided, the noise reduction sponge 303 is convenient for buffering the sound wave energy of the bell mouth 102, and thus the vibration of the sound amplifying cover 3 due to the sound wave energy while amplifying the bell mouth 102 is effectively avoided.

Specifically, please refer to fig. 5, fig. 6 and fig. 7, and an adjusting component disposed in the sound amplifying box body 20 for moving the bluetooth speaker body 100 to the corresponding sound amplifying cover 3 position, where the adjusting component includes a connecting seat 101 fixedly disposed on the lower end surface of the bluetooth speaker body 100, a moving seat 21 connected to the connecting seat 101, a screw rod 22 connected to the moving seat 21 and disposed in the length direction of the sound amplifying box body 20, a guide rod 23 fixedly disposed in the inner cavity of the sound amplifying box body 20, a guide hole 211 disposed on the moving seat 21 and adapted to the guide rod 23, and a driving component for rotating the screw rod 22, where the connecting seat 101 is connected to the upper end surface of the moving seat 21 by screwing or plugging, so as to connect the bluetooth speaker body 100 to the moving seat 21 through the connecting seat 101, a ball bearing 221 is disposed at the connection position of the screw rod 22 and the inner cavity of the sound amplifying box body 20, so as to facilitate the screw rod 22 to rotate through the driving component, so as to facilitate the moving seat 21 to horizontally move the bluetooth speaker body 100 to the corresponding sound amplifying cover 3, and in the process, where the guide hole 23 is matched with the moving seat 21.

Referring to fig. 5, 6 and 7, the driving assembly includes a first gear 41 connected to the screw 22, a second gear 42 engaged with the first gear 41, a rotating shaft 43 connected to the second gear 42, and an adjusting handle 431 connected to the rotating shaft 43, the first gear 41 is connected to the screw 22 through a spline, one end of the rotating shaft 43 is connected to the second gear 42 through a spline, the other end of the rotating shaft 43 is fixedly connected to the adjusting handle 431, the adjusting handle 431 facilitates rotation of the rotating shaft 43, so that the rotating shaft 43 drives the second gear 42 to rotate, the second gear 42 drives the first gear 41 to rotate, and the first gear 41 rotates to drive the screw 22 to rotate.

Referring to fig. 1 specifically, in order to facilitate positioning of the bluetooth speaker body 100 during moving, an indicator 1021 is disposed at a center position of the bell mouth 102, the indicator 1021 is set to be an infrared light beam of a linear structure, and it is convenient to overlap the middle position of the indicator 1021 and the sound amplification cover 3, that is, the light of the indicator 1021 is linearly emitted out of the center position of the sound amplification cover 3, which represents alignment of the bell mouth 102 and the sound amplification cover 3, and facilitates positioning of the bluetooth speaker body 100 during moving, and facilitates accurate realization of sound amplification of the bell mouth 102.

In this embodiment, be convenient for rotate axis of rotation 43 through adjustment handle 431, thereby be convenient for axis of rotation 43 to drive second gear 42 and rotate, it rotates to drive first gear 41 when second gear 42 rotates, first gear 41 rotates and drives screw rod 22 and rotate, when screw rod 22 rotates, it uses screw rod 22 to carry out horizontal migration to remove seat 21 as the center pin, thereby be convenient for remove seat 21 and drive bluetooth speaker body 100 and remove to corresponding public address cover 3 below, adjustment handle 431 adjusts conveniently, the meshing of first gear 41 and second gear 42, be convenient for realize carrying out the accurate control of accurate public address to removing seat 21 shift position, thereby be convenient for realize carrying out the purpose of accurate public address to bluetooth speaker body 100.

A use method based on the stable type sound amplifying structure for the Bluetooth sound box comprises the following steps:

s1: the adjusting handle 431 is rotated clockwise, and the adjusting handle 431 drives the rotating shaft 43 to rotate clockwise;

s2: the rotating shaft 43 drives the second gear 42 to rotate clockwise, the second gear 42 drives the first gear 41 to rotate when rotating, and the first gear 41 rotates to drive the screw 22 to rotate clockwise;

s3: when the screw 22 rotates, the movable base 21 moves horizontally with the screw 22 as a central axis;

s4: remove seat 21 and drive bluetooth speaker body 100 and remove to corresponding public address cover 3 below, on the moving direction of bluetooth speaker body this moment, public address hole on the public address cover 3 increases gradually, realizes the purpose to the gradual public address of horn mouth 102.

The installation method comprises the following steps: firstly, the sound amplification cover plate 201 is removed from the sound amplification box body 20, then the connecting seat 101 below the Bluetooth invisible body is connected with the moving seat 21 through screw connection or clamping connection, and then the sound amplification cover plate 201 is connected with the sound amplification box body 20.

The working principle is as follows: the adjusting handle 431 is rotated clockwise, the adjusting handle 431 is convenient for rotating the rotating shaft 43 clockwise, so that the rotating shaft 43 can drive the second gear 42 to rotate clockwise, the second gear 42 drives the first gear 41 to rotate clockwise, the first gear 41 rotates to drive the screw rod 22 to rotate clockwise, when the screw rod 22 rotates, the movable seat 21 takes the screw rod 22 as a central shaft to move horizontally, so that the movable seat 21 can drive the bluetooth sound box body 100 to move to the lower part of the corresponding sound amplification cover 3, in the moving direction of the bluetooth sound box body, the sound amplification holes 31 on the sound amplification cover 3 are gradually increased, and the purpose of gradually amplifying the horn mouth 102 is realized;

when the adjusting handle 431 rotates counterclockwise, the adjusting handle 431 is convenient for rotating the rotating shaft 43 counterclockwise, so that the rotating shaft 43 drives the second gear 42 to rotate counterclockwise, the second gear 42 drives the first gear 41 to rotate counterclockwise, the first gear 41 rotates to drive the screw rod 22 to rotate counterclockwise, when the screw rod 22 rotates, the moving seat 21 horizontally moves by taking the screw rod 22 as a central shaft, so that the moving seat 21 drives the bluetooth sound box body 100 to move to the lower part of the corresponding sound amplification cover 3, in the moving direction of the bluetooth sound box body, the sound amplification holes 31 on the sound amplification cover 3 are gradually reduced, and the purpose of gradually reducing the sound of the horn mouth 102 is realized;

in this process, the central point of horn mouth 102 puts the pilot lamp 1021 that is provided with infrared light beam, is convenient for utilize pilot lamp 1021 and the middle part position of public address cover 3 to overlap, and the light of pilot lamp 1021 is the central point that the straight line jetted out public address cover 3 promptly, represents horn mouth 102 and public address cover 3 centering mutually, is convenient for fix a position removal in-process bluetooth speaker body 100, and is convenient for accurate realization carry out the purpose of public address to horn mouth 102.

Examples

Referring to fig. 2 and fig. 3, the portable loudspeaker comprises an angle adjusting member disposed on the lower end surface of the sound amplifying box 20, the angle adjusting member comprises a supporting base 5 hinged to one end of the sound amplifying box 20 and having an upward opening, an electric telescopic rod 61 disposed in the inner cavity of the supporting base 5, a mounting base 202 fixedly disposed on the lower end surface of the sound amplifying box 20, and a connecting pin 62 disposed at the connecting position of the electric telescopic rod 61 and the mounting base 202, the fixing base of the electric telescopic rod is connected to the supporting base 5 through a fixing screw, and the electric telescopic rod is convenient for adjusting the angle between the sound amplifying box 20 and the supporting base 5, so as to adjust the angle of the sound amplifying box 20 when in use, and facilitate the storage of the sound amplifying box 20, thereby facilitating the storage of the portable loudspeaker.

In order to prevent external impurities from entering the sound amplifying box body 20 through the sound amplifying hole 31 during the storage process of the sound amplifying box body 20;

as one embodiment of the invention, each of the sound amplifying covers 3 is provided with a filter screen, which is convenient for filtering impurities in the air and prevents the impurities from entering the sound amplifying box body;

as one embodiment of the present invention, a protective cover (not labeled in the figures) is sleeved on the periphery of the supporting base 5, and the protective cover can sufficiently seal the sound amplifying box body 20 in the supporting base 5, so as to prevent external impurities from entering the sound amplifying box body 20.

The working principle is as follows: when electronic telescopic push rod 61 risees gradually, public address box body 20 is gradually toward keeping away from and supporting the direction removal of base 5, the angle of opening of public address box body 20 crescent, is convenient for like this adjust the use angle of public address box body 20, when electronic telescopic push rod 61 reduces gradually, public address box body 20 is gradually toward moving for the direction that supports base 5, and then is convenient for realize accomodating public address box body 20 in the purpose that supports the 5 inner chambers of base.

The device obtained through the design can basically meet the requirement of improving the existing sound amplifying structure for the Bluetooth loudspeaker box, and due to the design characteristics of the device, the sound size of the Bluetooth loudspeaker box cannot be conveniently adjusted according to the actual use requirement in the actual use process.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A stable sound amplifying structure for a Bluetooth sound box is characterized by comprising a Bluetooth sound box body (100) and a bell mouth (102) arranged on the upper end face of the Bluetooth sound box body (100);

still including being used for carrying out the public address structure of public address to horn mouth (102) of bluetooth speaker body (100), the public address structure includes opening public address box body (20), setting up and is in public address apron (201), the even setting of the up end of public address box body (20) open end are in expand sound cover (3) and setting on public address apron (201) are in be used for in public address box body (20) moving bluetooth speaker body (100) to the adjusting part of corresponding expand sound cover (3) position, every public address cover (3) on evenly be provided with expand sound hole (31), and the trompil rate on public address cover (3) increases progressively in proper order along the forward end of the direction of movement of bluetooth speaker body (100), every public address cover (3) set up at protective housing (301) inner chamber rather than inner shell (302) that set up with camber and set up at protective housing (301) and set up the sponge between protective housing (301) and protective housing (302) and fall and make an uproar (303) constitute, inner shell (302) and protective housing (302) set up the material that inner shell (302) set up and protective housing (301) set up the length of adjusting plate material is set up respectively and move the connection seat (21) and be connected with bluetooth speaker body's connecting seat (101) and the length of connecting seat (21) and be connected the connection seat (101) of bluetooth speaker body (21) under the mobile screw rod (21 the public address of sound box body (20) and the public address box body (20) and be connected the public address box body (101) and constitute, the public address box body (101) are set up, fixed setting is in guide bar (23), the setting of public address box body (20) inner chamber be in on removal seat (21) with guide bar (23) looks adaptation guiding hole (211) and be used for carrying out pivoted drive assembly to screw rod (22), connecting seat (101) with the up end that removes seat (21) is connected through spiro union or grafting, drive assembly include with first gear (41) that screw rod (22) are connected, with second gear (42) that first gear (41) engaged with, with axis of rotation (43) that second gear (42) are connected and with adjustment handle (431) that axis of rotation (43) are connected, first gear (41) through the spline with screw rod (22) are connected, the one end of axis of rotation (43) through the spline with second gear (42) are connected, the other end of axis of rotation (43) with adjustment handle (431) fixed connection.

2. The stable type sound amplifying structure for the bluetooth speaker as claimed in claim 1, wherein a limiting retaining ring (2011) is disposed at the middle upper portion of the inner cavity of the sound amplifying box body (20), the periphery of the limiting retaining ring (2011) is fixedly connected to the sound amplifying box body (20), and the limiting retaining ring (2011) is connected to the sound amplifying cover plate (201) through a snap-fit structure.

3. The stabilized type sound amplifying structure for the bluetooth speaker as claimed in claim 2, wherein the sound amplifying cover (3) and the sound amplifying cover plate (201) are integrally formed, and an inner cavity of each sound amplifying cover (3) is abutted against an outer periphery of the bell mouth (102).

4. The stabilized type sound amplifying structure for bluetooth speaker as claimed in claim 1, wherein an indicator light (1021) is disposed at a central position of said bell mouth (102), and said indicator light (1021) is configured as an infrared beam of a linear structure.

5. The use method of the stabilized sound amplification structure for a Bluetooth sound box according to claim 4, wherein,

s1: the adjusting handle is rotated clockwise, and the rotating shaft is driven by the adjusting handle to rotate clockwise;

s2: the rotating shaft drives the second gear to rotate clockwise, the second gear drives the first gear to rotate when rotating, and the first gear drives the screw to rotate clockwise;

s3: when the screw rotates, the movable seat horizontally moves by taking the screw as a central shaft;

s4: remove the seat and drive the bluetooth speaker body and remove to corresponding public address cover below, on the moving direction of bluetooth speaker body this moment, the public address cover goes up the public address and covers the hole of expanding gradually, realizes the purpose to the gradual public address of horn mouth.

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