70 results about "Swazzle" patented technology

The utility model discloses a sealing structure of a special-shaped sound cavity, which belongs to the technical field of sound boxes and comprises an upper shell assembly and a lower shell assembly, the upper shell assembly is positioned above the lower shell assembly, two ends of one side of the upper shell assembly are respectively provided with a woofer and a tweeter, and the lower end of the interior of the lower shell assembly is provided with a vibrating diaphragm. Fixing screws are arranged on the three sides of the lower end of the lower shell assembly, installation of the sealing structure can be completed through mutual splicing of the upper shell assembly and the lower shell assembly, positioning and pre-fixing can be carried out through matching of the protruding ribs and the grooves and matching of the male buckles and the female buckles, meanwhile, fixing is carried out through the fixing screws, a user can carry out assembling conveniently, and the sealing structure is convenient to use. And the dispensing glue is filled in the groove, so that the air tightness and the reliability are improved.

The utility model discloses a loudspeaker convenient to install a diaphragm, which comprises a base, a sound diaphragm, an inserting and fixing piece and an operating rod, the top of the base is connected with an installation table, the top of the installation table is provided with a pressing plate, four corners of the bottom surface of the pressing plate are connected with positioning pin blocks, and the surfaces of the positioning pin blocks are connected with magnetic iron sleeves. According to the utility model, by moving the operating rod in the limiting groove, the limiting block can be driven to slide and move in the connecting block for regulating and controlling the insertion state of the insertion piece and the insertion groove, so that the stability of the sound vibrating diaphragm in the mounting table can be ensured, and the sound vibrating diaphragm and the mounting table can be conveniently and quickly disassembled subsequently; and the limiting block and the inserting and fixing piece are automatically reset to be clamped with the inserting and fixing groove due to the rebound resilience of the reset spring, dismounting and mounting operation is convenient, and flexibility is provided for later maintenance work.

The utility model discloses an MEMS horn with high moisture resistance, which belongs to the technical field of horns and comprises a shell, two sound production covers are fixedly assembled at the top of the shell, a cover plate is fixedly mounted on one side, far away from the sound production covers, of the shell through screws, and a plurality of heat dissipation grooves are uniformly formed in the inner wall of the cover plate. A positioning strip is fixedly assembled on the inner wall of the shell, and the inner wall of the positioning strip is fixedly connected with one end of a spring; the moistureproof operation is performed on the inner cavity of the shell through the moistureproof cotton plate, when the moistureproof cotton plate needs to be replaced, the pressing plate can be pulled to move upwards, a new moistureproof cotton plate is placed between the pressing plate and the positioning strip, and then the moistureproof cotton plate is stably positioned between the positioning strip and the pressing plate by means of resetting of the acting force of the spring. The replacement convenience is improved, so that the problem of insufficient safety caused by easy short circuit of internal electronic elements and line connection ports in a humid environment due to insufficient moisture resistance is avoided.

The reversing horn comprises a horn body (3), the horn body (3) is installed in a horn inner shell (2), the horn inner shell (2) is installed in a horn outer shell (1), a waterproof sound amplifying cover (1.3) with the opening end facing the horn body (3) is installed in the horn outer shell (1), and a horn sound amplifying opening (2.1) of the horn inner shell (2) is inserted into the waterproof sound amplifying cover (1.3). A rear cover (4) is installed on the tail portion of the loudspeaker outer shell (1), and the loudspeaker body (3) is contained in a sealing cylinder (4.3), inserted into the loudspeaker outer shell (1), on the rear cover (4). According to the reversing horn provided by the utility model, the perfect solution of waterproof and sound amplification effects is realized in a compact structural design through a brand new design.

The invention provides a portable full-frequency sounding device, which comprises a box body, a mid-bass horn, a tweeter and a silencing assembly, the mid-bass horn and the tweeter are both arranged in the box body, the mid-bass horn comprises a mid-bass vibrating diaphragm and a mid-bass dustproof cap, the tweeter is arranged in front of the mid-bass horn, and the silencing assembly is arranged in front of the mid-bass horn. The tweeter and the mid-bass loudspeaker are coaxially arranged, and at least part of the tweeter is located in the groove in front of the mid-bass vibrating diaphragm; the silencing assembly comprises a first sound absorption block and a second sound absorption block, the first sound absorption block is arranged on the side, close to the mid-bass horn, of the tweeter, the second sound absorption block is arranged on the mid-bass dustproof cap, the first sound absorption block is provided with a first inwards-concave face away from the second sound absorption block in a concave mode, and the second sound absorption block is provided with a second inwards-concave face away from the second sound absorption block in a concave mode. The second sound absorption block is provided with a second inner concave face which is concave away from the first sound absorption block, and the first inner concave face and the second inner concave face are oppositely arranged.

The invention provides a water music cup in a cup shape. The water music cup comprises a water cup body, a cup cover, a water cup sealing ring, a fixing cover, a silica gel sealing ring, an acoustic waterproof film, a silicon microphone silica gel sleeve, a PCB, a storage battery, a connecting shell, a loudspeaker and a top cover. According to the cup-shaped water music cup provided by the invention, the water cup sealing ring, the silica gel sealing ring, the acoustic waterproof film, the silicon microphone silica gel sleeve, the PCB, the storage battery and the loudspeaker are respectively arranged among the cup cover, the fixed cover and the connecting shell; when the water cup main body is used for containing liquid, the sound generated by collision between the liquid in the water cup main body and the water cup main body can be collected and processed, and the sound can be played through the loudspeaker after being processed, so that the interestingness of the whole device during use can be increased while the water cup main body contains the liquid.

The utility model provides a mega bass horn damping structure used on a KTV all-in-one machine, comprising a box body, a horn and a damping assembly, the horn and the damping assembly are installed in the box body, the damping assembly comprises a sound insulation board and a reflector, the reflector is arranged on the opposite side of the horn, the reflector is provided with a reflection surface protruding towards the horn, and the sound insulation board is arranged on the sound insulation board. The sound insulation plates are arranged in the cavity of the box body and located on the two sides or the peripheral side of the loudspeaker piece and the reflector, a hollow sound guide cavity is formed between the loudspeaker piece and the reflector and used for transmitting sound emitted by the loudspeaker piece to the reflector through the sound guide cavity, and the reflecting face reflects the sound and dispersedly transmits the sound into the sound guide cavity. The damping structure of the mega bass horn effectively reduces resonance of a ktv all-in-one machine caused by the mega bass horn, and improves stability and durability of a sound box.

The utility model provides a small volume bass sound box, which comprises a hollow box body, a mega bass horn embedded in the front side surface of the box body, and an air guide pipe vertically penetrating through the front side surface of the box body and extending backwards, the rear end part of the mega bass horn extends into the box body, and the air guide pipe comprises a straight pipe, and a front horn cover and a rear horn cover which are connected to the two end parts of the straight pipe. The gap is formed between the rear horn cover and the inner wall of the box body, and sound waves in the box body can be led out through the air guide pipe, so that the size of the sound box is reduced; the conical flow guide cover is arranged in the gap, the front end of the conical flow guide cover extends into the rear horn cover, the rear end of the conical flow guide cover is attached to the inner wall of the box body, and the outer wall of the conical flow guide cover is parallel to the inner wall of the rear horn cover, so that airflow in the box body can smoothly enter the air guide pipe through matching of the outer wall of the conical flow guide cover and the inner wall of the rear horn cover; the turbulence at the opening of the end part of the air guide pipe is greatly reduced, the energy loss is reduced, the formed bass impact force is strong, the noise in the bass is also weakened, and the purity of the bass is better.

The invention relates to the technical field of diaphragm plate damage early warning, in particular to a bridge diaphragm plate damage early warning method based on the sound transmission principle, and the method comprises the steps: placing a miniature loudspeaker in a leftmost cavity in a steel box girder for sound excitation, and obtaining a sound pressure value in a rightmost cavity through a microphone; multiple frequencies are changed, the first step is repeated, and the microphone obtains sound pressure values after sound transmission of different frequencies; sorting the sound pressure values to respectively obtain sound transmission loss curves of experiments of transmitting sound waves from left to right and from right to left; the sound transmission loss curves in the two different sound transmission directions are compared and analyzed to determine damage early warning of the bridge diaphragm plate; according to the method, the sound transmission loss curves in the two directions are analyzed according to the sound transmission principle to determine whether the bridge diaphragm is damaged or not, and the accuracy of damage early warning of the bridge diaphragm is improved.

The utility model relates to the technical field of home production, in particular to a voice intelligent ceiling sound box structure. The device comprises a base, an outer cylinder cover plate, a conveying mechanism and a control mechanism, the conveying mechanism comprises an inner bottom plate, an inner cylinder and at least three limiting rods, the limiting rods penetrate through the inner bottom plate, the bottom ends of the limiting rods abut against the base so that a containing space can be formed between the base and the inner bottom plate, and a first square groove is formed in the upper surface of the inner bottom plate; the bottom of the inner cylinder is embedded into the first square groove, and a loudspeaker assembly is arranged on the side wall of the inner cylinder; the multifunctional sound box can be used as a stool or a flowerpot rack, and can also be used as a sound box for playing music, and through the cavity-in-cavity design of the transmission mechanism and the control mechanism in the multifunctional sound box and the transmission design of the inner cylinder and the outer cylinder, the quality and stability of the sound quality are ensured, and the purposes of surround sound quality and uniform sound production of the sound quality are achieved.

The invention relates to a loudspeaker sound cavity sealing dustproof damping assembly and a production process thereof. The assembly comprises a hollow annular foam layer, a first double-faced adhesive tape layer and a second double-faced adhesive tape layer, wherein the first double-faced adhesive tape layer and the second double-faced adhesive tape layer are attached to the two faces of the hollow annular foam layer. A dustproof net is compounded on the outer surface of the first double-faced adhesive tape layer. A PET base material layer, a third double-sided adhesive layer and a finished product release film layer are sequentially compounded on the outer surface of the second double-sided adhesive layer, handle parts protruding out of the outer contour of the second double-sided adhesive layer are arranged at the two ends of the outer contour of the PET base material layer and the two ends of the outer contour of the third double-sided adhesive layer, and mounting holes are formed in the handle parts. According to the invention, die cutting is respectively carried out at different pitches and then assembling is carried out, so that the waste of high-cost materials is reduced, the utilization rate is improved, the overall cost is reduced, and the production efficiency is considered; a die bottom plate with high hardness is adopted for die cutting of a metal dustproof net at a certain heat degree, the die cutting precision of the dustproof net can be improved, fusion of the edge of the dustproof net and the double-faced adhesive tape can be accelerated, edge laddering is avoided, and the yield of the whole assembly is increased.

An example device may comprise one or more of the following components: a neck having an opening for receiving sound, a bell directing the sound, a mouthpiece opening for emitting the sound, and a variable-width slot arranged between the neck and the bell directing the sound, wherein the variable-width slot may have a lower section having a first width and an upper section having a second width greater than the first width.

The utility model relates to a hanging type vehicle-mounted sound box which comprises a long cylindrical shell, the surface of the shell is provided with an installation clamping groove along the extending direction, the surface of the shell is provided with a first installation through hole, and the interior of the shell is provided with an installation cavity communicated with the first installation through hole and a hanging installation strip connected with the installation clamping groove in a clamping mode. The hanging installation strip is fixedly connected with a hanging piece and a first sound mechanism connected with the first installation through hole, the first sound mechanism comprises a first sound shell, a first loudspeaker and a first sealing piece, the first loudspeaker and the first sealing piece are arranged in the first sound shell, the side edge of the first sound shell extends outwards to form a first turned edge, and the first turned edge extends outwards to form a second turned edge. And the first flange presses the first sealing element to be fixedly connected with the shell around the first mounting through hole. According to the hanging type vehicle-mounted sound equipment disclosed by the utility model, the first sound equipment shell has certain sealing performance, so that a user can maintain the first loudspeaker in the first sound equipment shell more easily.

The invention relates to the technical field of sound equipment assembly, and discloses sound-absorbing cotton pasting equipment for sound speaker assembly, which comprises an electric turntable, pasting jigs, a sound-absorbing cotton body, a sound-absorbing cotton sticker, a speaker cavity, a tearing and pasting channel and a tearing and pasting assembly, and is characterized in that the pasting jigs are fixedly mounted on the rotating disc surface of the electric turntable at equal intervals; different from a conventional sticker tearing effect, the sticker tearing assembly divides the tearing action into two times of traction effects in opposite directions, the loudspeaker cavity is opened at a small angle firstly, then the loudspeaker cavity is opened at a small angle, and the sound absorption cotton sticker is adhered to the surface of the sound absorption cotton body. A certain opening angle is formed between the sound-absorbing cotton sticker and the sound-absorbing cotton body, the combination tightness of the sound-absorbing cotton sticker and the sound-absorbing cotton body is destroyed, then the sound-absorbing cotton sticker is completely torn at a large angle in the reverse direction, and the torn sound-absorbing cotton sticker part can be used as a support in the reverse direction, so that the problem of easy torsional deformation caused by lack of the support is avoided.

The utility model relates to the technical field of music boxes, in particular to a slope rotating music box which comprises a bottom plate, a side plate is clamped to the edge of the top face of the bottom plate, a power source and a loudspeaker are installed on the top face of the bottom plate, an installation plate is clamped to the top face of the bottom plate through a supporting assembly, and a top plate is clamped to the top face of the side plate. A sliding groove is formed in the surface of the mounting plate; a rotating structure is mounted on the mounting plate, the rotating structure comprises a motor, the motor is fixedly mounted on the bottom surface of the mounting plate, the output end of the motor is fixedly connected with a rotating rod, and the two ends of the rotating rod are rotationally connected with a rotating arm and a first connecting arm respectively. According to the utility model, the rotatable magnetic block can be matched with the connecting block to drive the ornament to move on the surface of the top plate, the functionality is strong, the surface of the top plate is not provided with holes, the power of the ornament moving on the surface of the top plate is hidden, and the interestingness and playability are increased.

The utility model discloses an integrated megaphone, relates to the technical field of megaphones, and aims to solve the technical problems that a traditional megaphone is usually large in size, not portable enough, relatively complex in internal structure and needs more parts and connections. According to the technical scheme, the megaphone is characterized by comprising a megaphone body, a horn base is arranged on one side of the megaphone body, a horn cavity used for containing a horn is formed in the horn base, a diffusion opening is formed in the top of the horn cavity, circulation openings are formed in the two sides of the horn base, and a sound amplifying cylinder is arranged on the other side of the megaphone body; the diffusion opening, the circulation opening and the sound amplification cylinder form a sound circulation pipeline, and an echo cylinder is arranged in the horn base. The utility model aims to provide an integrated megaphone.

The utility model discloses a sound pick-up with a protective device, which relates to the technical field of sound pick-ups and comprises a protective shell, a fixing ring is arranged on one side of the protective shell, a sound pick-up body is arranged in the protective shell, a connecting rod is arranged on one side of the fixing ring, sound receiving cloth is arranged on one side of the connecting rod, and a spherical fixing seat is arranged on the outer wall of the connecting rod. And a driving rod is arranged on one side of the spherical fixing seat. According to the utility model, a plurality of groups of connecting rods are pushed by the driving rod to form a space supporting structure, and the space supporting structure is unfolded by matching with a telescopic mechanism of the sliding pipe and the sliding rod, so that the flexible sound receiving cloth is naturally tightened to form a trumpet-shaped sound collecting cavity, and the sound signal collecting efficiency is remarkably enhanced by utilizing a sound wave reflection principle; the self-adaptive adjustment of the angle when the mechanism is unfolded can be guaranteed, the components can be tightly attached when the mechanism is stored, the flexible sound receiving cloth is automatically attached to the surface of equipment by means of material elasticity in the storage state, a physical isolation layer is formed, and dust erosion is effectively resisted.

The present invention relates to a diaphragm and suspension combination structure of an ultra-thin speaker, belonging to the technical field of diaphragms. It includes a diaphragm and a suspension. The diaphragm is composed of an annular flange, a conical part, a connecting part and a vibrating part. The outer side wall of the annular flange is connected to the top of the disc frame. The two ends of the conical part are respectively connected to the inner side wall of the inner ring of the annular flange and the connecting part. Clamping platforms are provided at both the inner and outer ends of the connecting part. The inner clamping platform of the connecting part is adhesively bonded to the outer side wall of the top of the voice coil. The outer clamping platform of the connecting part is adhesively bonded to the inner side wall of the suspension. The outer side wall of the suspension is connected to the disc frame. The outer side wall of the vibrating part is connected to the connection part between the conical part and the annular flange. The present invention solves the problem that the existing bass speakers cannot avoid sound quality damage while reducing the height.

The utility model relates to the technical field of stock bin anti-blocking, and particularly discloses a sound wave anti-blocking device which comprises an air storage tank and further comprises a whistle sounding unit, a motor is installed on the whistle sounding unit, and the whistle sounding unit is communicated with the air storage tank through a first communicating pipe. The whistle sounding unit is also provided with a sound wave guide pipe through a second communication pipe, and one end of the sound wave guide pipe away from the whistle sounding unit is provided with a sounding horn. The sound production loudspeaker is installed in the stock bin through the installation assembly. Sound is transmitted into the sound production loudspeaker through the sound wave guide pipe, air and particles in the space area are oscillated, sheared and damaged or the particles are prevented from staying and being combined on the working face through the huge effect of sound energy, and the anti-blocking purpose is achieved through the gravity of the air and airflow. The device has the technical characteristics that the wavelength is long, the energy is large, the winding and reflecting capacities are high, the sound wave energy can reach the whole space, and the blockage clearing performance is better.

The utility model discloses a sound cavity optimized fast assembly thin sound box, which comprises a first shell and a second shell, the first shell extends inwards to form a first annular edge, the second shell extends inwards to form a second annular edge, the edge opening of the first annular edge and the edge opening of the second annular edge are both S-shaped, and the edge opening of the first annular edge and the edge opening of the second annular edge are S-shaped. An S-shaped edge opening of the first annular edge and an S-shaped edge opening of the second annular edge are opposite in direction and meshed with each other, a first abutting column is formed in the first annular edge, and a second abutting column is formed in the second annular edge. According to the utility model, after the first shell and the second shell are connected and fastened, the edge opening of the first annular edge and the edge opening of the second annular edge are reversely crossed and enclasped tightly, so that wind power generated by bass cannot be blown out transversely, the collision of hard sound is avoided, and the sealing problem of the sound cavity is solved; the first abutting column and the second abutting column cooperate to clamp the loudspeaker unit and the vibrating diaphragm unit, so that a complex secondary processing technology is omitted, the assembly process of the sound box is easier and more efficient, and air leakage and resonance are avoided at the same time.

The invention discloses a magnetofluid-based sound production training device, and relates to the technical field of sound production training, the magnetofluid-based sound production training device comprises a supporting frame and a magnetofluid transparent box, the bottom of the supporting frame is fixedly connected with a base, two sides of the supporting frame are symmetrically and fixedly connected with two groups of loudspeakers, and the side surface of the supporting frame is fixedly connected with a sound receiver; a moving assembly is arranged at the bottom of the inner side of the supporting frame, a first electromagnet is fixedly connected to the side, close to the magnetofluid transparent box, of the second sliding plate, a protection assembly is arranged on the inner side of the supporting frame, and by arranging the moving assembly, the control effect of the first electromagnet on magnetofluid is improved, and the interference effect is reduced; interference of an external electromagnetic field is reduced, sound production training is more stable, the training effect is improved, magnetic fluid is gathered through the shielding plate, disturbance of the external environment to the magnetic fluid is reduced, and the service life is prolonged.

The utility model provides a sound post with an adjustable horn angle, which comprises a shell, a horn unit arranged in the shell, a mounting channel arranged on the front wall of the shell, an opening end of the horn unit accommodated in the mounting channel, the horn unit comprises a fixed horn and a movable horn which are arranged up and down, the fixed horn is fixedly connected with the shell, and the movable horn is fixedly connected with the shell. The upper end of the movable horn is hinged to the lower end of the fixed horn, and a movable gap is reserved between the lower end face of the movable horn and the lower end face of the installation channel. An adjusting mechanism is arranged on the side wall of the shell, the operating end of the adjusting mechanism is exposed out of a back plate of the shell, and the driving end of the adjusting mechanism is connected with the movable loudspeaker and used for driving the movable loudspeaker to rotate front and back. According to the sound post with the adjustable horn angle, sound directivity adjustment is achieved by adjusting the angle of the horn, and the sound post is simple in structure and convenient to adjust.

The combined loudspeaker structure comprises an iron block base, four sets of mounting blocks are arranged on the side of a bottom plate, the bottom plate is fixed to the top of a washer gasket, a supporting seat is arranged on the side of the top end of the washer gasket, and a moisture-proof lantern ring is arranged at the top end of the bottom plate; four groups of mounting blocks fixed on the bottom plate are arranged at the bottom of the basin stand, the basin stand is fixed through the mounting blocks, the mounting blocks enter the mounting grooves, the limiting of the mounting blocks is completed under the limiting of the insertion rods, and then the mounting of the basin stand is completed, so that the problem that glue at the bottom of a traditional basin stand falls off is solved through the structural arrangement, and the service life of the basin stand is prolonged. Meanwhile, the basin stand is simple and efficient to fix and easy to overhaul, disassemble and assemble, the blocking groove and the blocking plate are further arranged, blocking protection is further formed at the bottom of the basin stand, external water vapor is prevented from entering, a moisture-proof lantern ring is arranged outside the voice coil in a matched mode, a two-layer protection structure is formed, the voice coil can be effectively protected through the structure, and the service life of the voice coil is prolonged. The voice coil is prevented from being influenced by external water vapor.

The utility model relates to the technical field of audio, and discloses a multifunctional active audio, comprising a wooden box, wherein a woofer is detachably connected to the right side of the wooden box through bolts, a tweeter is detachably connected to the right side of the interior of the wooden box and located above the woofer through bolts, an iron net is fixedly connected to the right side of the wooden box and located in front of the woofer, and a fixing seat is detachably connected to the center of the lower surface of the wooden box through bolts; the fixing seat is fixed with a threaded connection bracket, which is convenient for assembly and disassembly and convenient for use; four rubber foot positions are respectively provided on the bottom and side of the wooden box, which are fixed with screws to protect the box body; at the same time, the inclination angle of the wooden box is scientifically set to expand the acoustic radiation surface of the audio, so that music can be better enjoyed at more positions; the bass effect output by the audio system can be effectively improved through the set air duct, so that the bass sound is clearer and more realistic.

The utility model discloses a coaxial horn, which comprises a horn body, an embedded fixing part and an extended fixing part, the vertical directional angle of the horn body is 30-60 degrees, the horizontal directional angle of the horn body is 90-180 degrees, and two first horn fixing holes are arranged at two ends of the horn body close to a throat; the embedded fixing part is arranged at the tail end of the throat of the horn body; the number of the extension fixing parts is two, the extension fixing parts are arranged at the two ends of the upper and lower unfolding surfaces of the horn body respectively, one end of each extension fixing part is provided with a second horn fixing hole, and the connecting line of the center points of the two first horn fixing holes and the two second horn fixing holes is a straight line. The sound coverage angle of the coaxial horn is improved, the firmness of the horn is enhanced, and the horn can be prevented from loosening and falling off when a sound box works continuously. The horn can be adjusted in the horizontal direction and the vertical direction, so that the best field sound effect is achieved.

The invention discloses a loudspeaker production gluing device which comprises a connecting plate, a plurality of glue spraying nozzles are installed at one end of the connecting plate, a bottom plate is arranged on the lower surfaces of the glue spraying nozzles, a plurality of limiting grooves are formed in the left side and the right side of the upper surface of the bottom plate, limiting sleeves are arranged in the limiting grooves, L-shaped grooves are formed in the limiting grooves, and lifting pieces are installed in the L-shaped grooves. A groove is formed in the center of the upper surface of the bottom plate, the end, away from the limiting sleeve, of the lifting piece extends into the groove, a hinge piece is installed on the lower surface of the connecting plate, sliding grooves are formed in the front side and the rear side in the groove, the hinge piece is slidably connected into the sliding grooves, and the hinge piece is hinged to the lifting piece. An extrusion structure composed of a first abutting rod, an L-shaped pipe and a second abutting rod is arranged on the lower surface of a limiting sleeve, when a glue spraying nozzle moves to one side to spray glue, a telescopic structure composed of a rectangular barrel and a hinge rod extrudes an extrusion structure on the other side, and the glued horn part is pushed out of a limiting groove, so that the operation steps of workers are reduced, and the working efficiency is improved. The working efficiency is improved.

The present invention discloses a dustproof speaker, comprising a box body and a speaker, wherein a speaker is fixedly connected to the inner cavity at the lower left side of the box body, a bracket is fixedly connected to the upper end of the inner cavity at the left side of the box body, a first bellows is fixedly connected to the upper end of the bracket, and the first bellows runs through the box body, the dust collector is connected to the exhaust pipe through a connecting pipe, and the left and right ends of the box body are respectively fixedly connected to a second clamping block and a first clamping block, and the right end of the box body is provided with a second baffle, and the second baffle is slidably engaged with the first clamping block. The dustproof speaker solves the dust falling problem of the speaker when not in use through the cooperation among the box body, the first clamping block, the second baffle and the second clamping block, and through the cooperation among the box body, the pin shaft, the first baffle, the dust removal box, the discharge box, the connecting block, the slider and the bracket, the box body is opened or closed by pulling the first baffle to rotate around the pin shaft, thereby solving the problem of replacing the dust removal box and the discharge box, and improving the dustproof effect.

The utility model provides a kazoo capable of amplifying sound, which comprises a shell and a blowing nozzle, the blowing nozzle is fixed on the shell, the shell is provided with a diaphragm hole, and a flute diaphragm is fixed at the diaphragm hole through a flute diaphragm cover; a first accommodating cavity is formed in the shell; the PCBA board and the power supply assembly are arranged in the first accommodating cavity, and a microphone assembly is arranged at the end, close to the membrane hole, of the inner side of the shell; a control assembly is arranged on the shell; one end of the shell is connected with the blowing nozzle, the other end of the shell is provided with a second containing cavity, and the horn device is arranged in the second containing cavity; a sound outlet hole is formed in the shell in the direction of a sound outlet of the loudspeaker device; the power supply assembly, the microphone assembly, the control assembly and the loudspeaker device are electrically connected with the PCBA board. The utility model provides a kazoo capable of amplifying sound, which realizes the arrangement of a sound amplifying device through a specific structure.

According to the low-frequency supplementary enhancement device of the sound box, the sound box comprises a box body and a woofer, the box body comprises a panel and a back plate, the woofer is installed on the panel, and sound absorption cotton is arranged behind the woofer in the box body. The principle of the utility model is as follows: after the sound-absorbing cotton is added, the sensitivity can be improved when the curve of a sound box system is below 100HZ, and the hearing feeling is fuller than that when the sound-absorbing cotton is not added at low frequency.