37results about How to "Affect sound quality" patented technology

The invention discloses a magnetic suspension speaker. The magnetic suspension speaker comprises a base and a speaker, a first coil arranged on the base, and a loudspeaker arranged on the speaker, andfurther comprises a permanent magnet arranged on the speaker, wherein the magnetic pole of the permanent magnet close to the base is the same as the magnetic pole close to the speaker generated afterthe first coil is energized. By using the magnetic field force that is generated by the homopolar repulsion between the permanent magnet and the first coil of the base and is opposite to the gravitydirection of the speaker, the magnetic steel of the loudspeaker does not need to undertake the task of suspending the speaker, so that the sound quality of the speaker cannot be affected by the interference of the suspension force, the speaker also cannot be affected by the playing music during suspension, and thus the stability of the speaker suspension can be improved.

The invention provides a sound film molding pressing die for a loudspeaker, consisting of an upper die part and a lower die part. The lower die part consists of a lower die head, a movable pressing sleeve, a reset spring and a lower template, wherein the lower die head comprises a molding die body and a bearing column; the molding die body consists of a lower molding surface and a lower plunger ring; the movable pressing sleeve is sleeved on the molding die body and the bearing column; the reset spring is sleeved on the bearing column, and is positioned between the movable pressing sleeve and the lower template; and an upper die head is coaxial with the lower die head. Because the movable pressing sleeve and the reset spring are additionally arranged in the lower die head part, when the sound film is pressed, grey cloth to be molded is firstly compacted by an upper plunger ring and the movable pressing sleeve so as to ensure that the peripheral cloth is stressed uniformly and then is subject to drawing and compression moulding. Therefore, the folding phenomenon on the periphery of a sound film finished product can be eliminated, the sound film molding pressing die can be operated only by one person, the finished product can be automatically demoulded, and the operation is safe, convenient, and labor-saving.

The invention provides a press-forming mould of a loudspeaker elastic wave, comprising an upper mould component and a lower mould component. The lower mould component comprises a lower mould head, a movable press sleeve, return springs and a lower template, wherein the lower mould head comprises a moulding body and a bearing column; the moulding body comprises a lower moulding surface and a lower press ring; the movable press sleeve is sleeved on the moulding body and the bearing column; the return springs are sleeved on the bearing column and positioned between the movable press sleeve and the lower template; and the upper mould head and the lower mould head are coaxial. The movable press sleeve and the return springs are added to the lower mould head so that, in the operation of pressing an elastic wave, the upper press ring and the movable press sleeve first press cloth blanks to be moulded tight and ensure that peripheral cloth receives even force; and then the cloth blanks are deeply drawn and pressed to form a finished product so that the folds of the peripheral parts of the finished product of elastic wave can be eliminated. The press-forming mould of the invention can be operated by only one person; and moreover, the finished product can be automatically demoulded, which provides safe, convenient and labor-saving operation.

The invention relates to a forming and pressing die for loudspeaker drum paper. The forming and pressing die for the loudspeaker drum paper consists of an upper die part and a lower die part, wherein the lower die part consists of a lower die head, a moveable pressing sleeve, a return spring and a lower template; the lower die head comprises a forming die body and a pressure-bearing column; the forming die body consists of a lower forming surface and a lower pressing ring; the moveable pressing sleeve is sleeved on the forming die body and the pressure-bearing column; the return spring is sleeved on the pressure-bearing column and is positioned between the moveable pressing sleeve and the lower template; and the upper die head is coaxial with the lower die head. The moveable pressing sleeve and the return spring are arranged on the lower die head; when the drum paper is pressed, cloth blank to be formed is pressed tightly by the upper pressing ring and the moveable pressing sleeve, and peripheral cloth is stressed uniformly and then is pulled deeply, pressed and formed, so that the folding phenomenon of the periphery of the drum paper finished product is eliminated, the finished product can be automatically demoulded by one person, and the forming and pressing die for the loudspeaker drum paper is safe and convenient to operate and labor-saving.

The invention relates to the technical field of pianos, and particularly relates to an allow for a piano. The allow comprises a back, an iron frame, soundboard bridges and a string, wherein handles are arranged at inner edges of two sides of the back, at least two uprights are arranged on the back, an upper beam and a lower beam are respectively fixedly arranged at two ends each of the uprights, the back is further provided with an upper back panel and a lower back panel; a pin block is arranged on the back and is used for supporting a tuning pin, the iron frame is arranged at the upper side of the pin block, and is fixedly connected onto the pin block, a soundboard is arranged between the back and the pin block, the uprights are positioned at the lower side of the soundboard, the bridges are fixedly arranged at the upper side of the soundboard and comprise tenor and treble bridges and bass bridges, a hitch pin is arranged on the iron frame, and bridge pins are arranged on the tenor and treble bridges and the bass bridges; a soundboard liner is arranged between the soundboard and the back; the string is tired and hung on the hitch pin, and wound on the tuning pin, a pressure bar is arranged at one side of the hitch pin, and is fixedly arranged on the iron frame, and a tuning pin bushing is arranged between the pin block and the tuning pin. The allow can be used for preventing the tone quality from being influenced by excessive wear of the tuning pin.

The invention discloses a buzzer structure convenient for installation and having a combo audio. The buzzer structure comprises a housing, a buzzer and a resonant chamber. A piezoelectric buzzer is installed in the housing. The resonant chamber is arranged at the top end of the piezoelectric buzzer. An outer ring is installed at the bottom of the housing. The invention is scientific and reasonablein structure, and safe and convenient in use; and an outer ring is arranged for the invention. Through the effects of a sliding slot, a groove, a sliding block and a fixing block, the sliding block slides and the position of the fixing block is adjusted according to an actual situation of the installing position. By matching the effects of a connecting screw rod and a locking nut, the position thereof is fixed, such that the buzzer is better installed and fixed. Through the effect of a movable shaft, the fixing block is folded and hidden conveniently according to an actual requirement, thereby achieving a simple operation and a convenient installation. Through the effects of a through hole, an inner ring and a bearing hole as well as an extrusion bump, the bearing hole at one side of theinner ring is made overlapped with the through hole, thereby circulating air at the bottom of the buzzer and improving heat dissipation effects of the buzzer.

The invention relates to an in-vivo implanted ossiphone vibrating device. The vibrator comprises a first vibrator, a second vibrator, leaf springs, leaf spring pressing plates, magnetic conductive plates, a coil framework, a coil, a magnet, a holder and a shell; the first vibrator is of a stepped structure and comprises a bottom cylinder, a first lug boss, a second lug boss and a top cylinder; the second vibrator and the magnet are assembled on the peripheral surface of the second lug boss; the first vibrator is arranged in the holder; a wire outlet is formed in a sidewall of the holder; the holder is of a structure open at both ends and counter bored holes are formed in the two ends; the leaf springs and the leaf spring pressing plates are glued on the counter bored holes, respectively; the coil framework is further assembled on the peripheral surface of the magnet; the coil is wound around the coil framework; the magnetic conductive plates are assembled on the two end faces of the coil framework; the shell comprises an upper cover, a lower cover and a fixed plate. The in-vivo implanted ossiphone vibrating device has the advantages of available high-frequency vibration, high vibration efficiency and large vibration amplitude.

The invention discloses a sound production device and electronic equipment, and the sound production device comprises a positioning assembly, a vibration assembly, and a voice coil assembly. The positioning assembly comprises a shell and a magnetic cover. The magnetic cover is arranged in the shell and defines a first cavity and a second cavity with the inner wall surface of the shell through enclosing. The shell is provided with a pressure equalizing hole and a sound outlet hole, wherein the pressure equalizing hole is communicated with the first cavity, and the sound outlet hole is communicated with the second cavity; the magnetic cover is provided with a first air hole, and the first air hole is communicated with the first cavity and the second cavity; the vibration assembly is arrangedin the first cavity and provided with a through hole, and the through hole is communicated with the first air hole; and the voice coil assembly is arranged in the second cavity. According to the invention, the sound effect of the sound production device can be enhanced while vibration is realized.

The invention discloses a Bluetooth earphone loudspeaker capable of being installed and fixed in an adhesion-free mode, and relates to the technical field of loudspeakers, the Bluetooth earphone loudspeaker comprises a front shell, the front shell is of an annular structure, the rear side of the front shell is connected with a rear shell in a locking mode, two circles of sound guide holes are formed in the front shell in an inner and outer ring sleeving and penetrating mode, and the backs of the two circles of sound guide holes are each communicated with a sound guide pipe; a circle of ventilation shaft holes are formed in the circumferential outer wall of each of the front shell and the rear shell in an annular array penetrating mode, and when the front shell and the rear shell are locked together, the two circles of shaft holes in the front shell and the rear shell are in butt joint and communicated. The circular baffle is installed in a sealed mode through pushing of the six short ejector rods and can be movably detached, and earwax impurities stored between the two check rings can be conveniently cleaned after the circular baffle is detached.

The invention provides an air-conditioner air duct mechanism and an air conditioner. The air-conditioner air duct mechanism comprises a volute, an impeller and a diversion part, wherein the impeller is located in an air duct of the volute; the air inlet side of the impeller is opposite to an air inlet of the air duct, and the air outlet side of the impeller is opposite to an air outlet of the airduct; and the diversion part is arranged in the air duct and located on the air inlet side of the impeller. According to the air-conditioner air duct mechanism and the air conditioner, the situation that the sound quality of the air conditioner is influenced due to the noise generated by the pressure loss between eddy currents in the air duct of the air conditioner is prevented, so that the product quality is improved.

The invention relates to a dustproof cover for an audio system, which comprises a metal mesh cover, a mounting frame, a cover and a fixing frame, the top of the cover is provided with a card slot, and a card block is installed inside the card slot, and the card The top of the block is equipped with a metal mesh cover, and the top of the metal mesh cover is provided with an annular groove, and a ring-shaped LED light is installed inside the annular groove, and a photosensitive sensor is installed on one side of the top of the metal mesh cover. The bottom end of the cover is equipped with a first dustproof gauze. The present invention is equipped with a stainless steel filter net, so that when the dust enters the cover through the metal mesh cover, the dust can be blocked by the stainless steel filter net, and the dust will adhere to the stainless steel filter net. The device is equipped with a slider and a chute, so that It is convenient to disassemble the fixed frame, so that when the dust on the stainless steel filter needs to be cleaned, the metal mesh cover is opened and the fixed frame is pulled out.

The invention belongs to the technical field of musical instruments, and relates to a piano score flipping system. The system solves the problems that an existing music turning device affects the piano tone quality, and damages a music score. The piano score flipping system comprises a music stand, a paper sucking unit and a paper pushing unit; the music stand comprises a bottom plate and a panel,the paper sucking unit comprises a sleeve and a piston, the sleeve is arranged on the panel, the sleeve is provided with a vent hole, the inner end of the piston is inserted into the sleeve, the outer end of the piston is connected with a paper sucking pull cable, a paper sucking pedal capable of driving the paper sucking pull cable to move is arranged at the bottom of a piano, the paper pushingunit comprises a paper pushing pedal and a paper pushing pull cable, the paper pushing pedal is arranged at the bottom of the piano, the lower end of the paper pushing pull cable is connected with thepaper pushing pedal, a swing rod is connected to the upper end of the paper pushing pull cable, the upper end of the swing rod is hinged to the panel, moreover, the reset mechanism is arranged between the swing rod and the panel, and the lower end of the swing rod can swing to the position above the music score on the panel. The piano score flipping system has a small influence on the piano tonequality and does not damage the music score.

The invention discloses a connecting seat of a loudspeaker, which comprises a first conductive element, a second conductive element, an isolation element and a hood, wherein the first conductive element comprises a head part and a rod body, and the head part is formed at one end of the rod body; the second conductive element is combined with the outer peripheral surface of the rod body; the isolation element is an insulator for isolating the contact between the first conductive element and the second conductive element; and the hood is provided with a conductor. The connecting seat comprises the two independent conductive elements, thus a user can assemble and connect the connecting seat through connecting wires or audiovisual equipment with a single sound source output terminal or two sound source output terminals by only selecting the first conductive element to separately form electric conduction with the conductor or by simultaneously selecting both of the first conductive element and the second conductive element to form the electric conduction with the conductor.

The invention relates to a musical instrument portable storage system, which includes a mounting base. The two sides of the upper portion of the mounting base are provided with a left bearing seat anda right bearing seat, and a rotating power mechanism is arranged between the left bearing seat and the right bearing seat; the upper portions of the left bearing seat and the right bearing seat are provided with a left lifting power cavity and a right lifting power cavity correspondingly, and the upper portions of the left lifting power cavity and right lifting power cavity are provided with a storage cavity; a left placement cavity and a right placement cavity are formed in the storage cavity, a left air inlet pipe and a right air inlet pipe are arranged on the outer sides of the left placement cavity and right placement cavity correspondingly, and an intermediate air inlet pipe is arranged between the left placement cavity and right placement cavity; and the lower portion of the storagecavity is provided with an air supply pipe, and a water storage pipe is arranged in the air supply pipe. The musical instrument portable storage system can effectively store for music equipment, humidification treatment and drying treatment as required are carried out advantageously, and the music equipment is maintained in the environment with the appropriate temperature and humidity.

The invention discloses a buzzer structure with composite audio for easy installation, which includes a shell, a piezoelectric buzzer and a resonance chamber. A piezoelectric buzzer is installed inside the shell, and the top of the piezoelectric buzzer is A resonance chamber is provided, and an outer ring is installed at the bottom of the shell. The structure of the present invention is scientific and reasonable, and it is safe and convenient to use. The outer ring is provided, and through the functions of chute, groove, slider and fixed block, it is convenient to According to the situation, slide the slider, adjust the position of the fixed block, and cooperate with the function of the connecting screw and the lock nut to fix its position, so that the buzzer can be better installed and fixed. Through the function of the movable shaft, it is convenient to adjust according to the actual needs. The fixed block is folded and hidden, which is easy to operate and easy to install. Through the function of the through hole, the inner ring and the receiving hole, the receiving hole on the side of the inner ring is overlapped with the through hole by squeezing the bump, so that the air at the bottom of the buzzer Circulation, improve the heat dissipation effect of the buzzer.

The invention discloses a magnetic levitation charging voice box, and relates to the technical field of the magnetic levitation charging voice box. The magnetic levitation charging voice box comprisesa base, a sound body is arranged at an upper part of the base, a dust removal mechanism is arranged in the sound body, and an adjusting mechanism is arranged in the base. Through the magnetic levitation charging voice box, use personnel twists a rotating rod when removing the dust, thereby enabling the rotating rod to drive a magnetic plate to rotate, the magnetic force of the magnetic plate is used for stretching a first telescopic spring and then getting rid of the first telescopic spring, the resilience force of the first telescopic spring is used for driving a movable plate and a supportplate to vibrate, the support plate drives adsorption cotton to vibrate to shake off the dust on an outer surface of the adsorption cotton; and meanwhile, the vibration is utilized to enable the duston the outer surface of a circuit board in the voice box to produce resonance; a fan works in the end, the dust in a circuit board installation cabin is sucked out through a pass pipe and a conduit, the dust is discharged from a dust discharge pipe; the entire can realize the automatic cleaning on the dust in the voice box, and the condition that the dust vibrates along with the sound to influencethe tone quality of the whole voice box due to dust accumulation is avoided.

The invention relates to a bone conduction hearing aid vibration device implanted in the body. The vibration device includes a first vibrator, a second vibrator, a reed, a reed pressure plate, a magnetic conductive sheet, a coil skeleton, a coil, a magnet, a fixing frame, and a shell; The first vibrator has a stepped structure, and the first vibrator includes a bottom cylinder, a first boss, a second boss, and a top cylinder; the outer peripheral surface of the second boss is equipped with a second vibrator and a magnet; The first vibrator is placed in a fixed frame; the side wall of the fixed frame is provided with an outlet hole; the fixed frame has an open structure at both ends, and both ends are provided with counterbore holes; the counterbore holes are bonded with reed and reed pressure plate; the outer peripheral surface of the magnet is also equipped with a coil bobbin; coils are wound on the coil bobbin; both ends of the coil bobbin are equipped with magnetic conductive sheets; , Fixed plate; its advantages are: high-frequency vibration, high vibration efficiency, and large amplitude.

The invention provides a KTV multifunctional stereo sound box and the use method thereof. The KTV multifunctional stereo sound box comprises a sound box shell, a first cavity and a second cavity with a rightward opening are formed in the sound box shell, a vibration hole penetrating into the second cavity rightwards is formed in the right side face of the first cavity, a drum membrane is arranged on the annular face of the right side of the vibration hole, and the drum membrane is arranged on the annular face of the right side of the vibration hole. Alcohol is stored in the sound box, the tympanic membrane cleaning device capable of cleaning the tympanic membrane by using the alcohol is arranged in the sound box, the tympanic membrane is prevented from being contaminated by too much dust to affect the tone quality of the sound box, and the tympanic membrane cleaning device is located on the lower side of the tympanic membrane when not working, so that sound transmission is not affected; the storage cavity for containing the microphone is formed in the microphone cleaning device, and after the microphone cleaning device is used, alcohol can be used for conducting ultrasonic cleaning on the microphone; according to the microphone, saliva stained on the microphone can be extracted, and the detector capable of detecting the saliva is arranged in the microphone, so that the behavior that someone inhales drugs in the KTV is stopped.

The invention belongs to the technical field of musical instruments and relates to a paper pushing unit of a piano score page turning system. The paper pushing unit of the piano score page turning system solves the problem that an existing score page turning device influences the tone quality of a piano. The piano score page turning system comprises a score frame comprising a base plate and a faceplate. The paper pushing unit comprises a paper pushing pedal and a paper pushing stay rope. The paper pushing pedal is arranged at the bottom of the piano. The lower end of the paper pushing stay rope is connected with the paper pushing pedal. The upper end of the paper pushing stay rope is connected with a swing rod. The upper end of the swing rod is hinged to the face plate, and a resetting mechanism is arranged between the swing rod and the face plate. The lower end of the swing rod can swing to the position above the score on the face plate. When the paper pushing unit of the piano scorepage turning system is used for turning the score page, the influence on the tone quality of the piano is little.

The invention relates to the field of sound equipment, in particular to a ceiling intelligent sound equipment host convenient to disassemble, which comprises a machine body and a mounting base used for being mounted on a wall. The machine body is located on the mounting base, a groove is formed in the mounting base, the machine body is located in the groove, and a telescopic assembly in a retraction state is connected between the machine body and the top wall of the groove. A timer, a power mechanism and a controller are arranged on the mounting base, the timer is used for timing the cleaning duration of the sound box, the timer is used for sending a cleaning signal to the controller after timing is completed, the controller controls the power mechanism to be started according to the cleaning signal, and the power mechanism drives the telescopic assembly to extend downwards. The sound equipment host is cleaned by lowering the position of the machine body, the sound effect of the sound box can be guaranteed by regularly cleaning the machine body, bolts of the mounting base do not need to be independently detached, the problem that mounting holes cannot be mounted again or mounting positions cannot be replaced after being enlarged is solved, and use is more convenient.

A mobile phone loudspeaker shell capable of preventing deformation disclosed by the present invention comprises a shell body, the top end of the shell body is internally provided with a limiting hole, the outer side of the upper end of the shell body is provided with a fixed edge, the inner side of the shell body is connected with a protective layer, and a sealing cover is installed right above the shell body. Fastening bolts are installed at the left end and the right end of the sealing cover, a pressing mechanism is installed on the lower surface of the sealing cover, an extrusion plate is arranged on the right side of the pressing mechanism, a sound transmission hole is formed in the lower left portion of the shell body, and a bottom plate is connected to the bottom of the supporting frame through bolts. According to the mobile phone loudspeaker shell capable of preventing deformation, under the action of the wear-resistant layer made of the ceramic material and the reinforcing layer internally provided with the metal wires for weaving, the wear-resistant performance and the self-strength of the shell body can be effectively improved, and the purpose of preventing the shell from deformation can be achieved in the long-term use process.

The invention belongs to the technical field of musical instruments, and relates to a paper-pushing unit in a piano page-turning system, which solves the problems that the existing page-turning device affects the sound quality of the piano, and the like. The music turning system includes a music stand, the music stand includes a bottom plate and a panel, the paper pushing unit includes a paper pushing pedal and a paper pushing cable, the paper pushing pedal is arranged at the bottom of the piano, the lower end of the paper pushing cable is connected with the paper pushing pedal, The upper end is connected with a swing rod, the upper end of the swing rod is hinged on the panel and a reset mechanism is arranged between the two, and the lower end of the swing rod can swing to the top of the music score on the panel. The invention has little influence on the sound quality of the piano when the score is turned.

The invention discloses a magnetic levitation charging voice box, and relates to the technical field of the magnetic levitation charging voice box. The magnetic levitation charging voice box comprisesa base, a sound body is arranged at an upper part of the base, a dust removal mechanism is arranged in the sound body, and an adjusting mechanism is arranged in the base. Through the magnetic levitation charging voice box, use personnel twists a rotating rod when removing the dust, thereby enabling the rotating rod to drive a magnetic plate to rotate, the magnetic force of the magnetic plate is used for stretching a first telescopic spring and then getting rid of the first telescopic spring, the resilience force of the first telescopic spring is used for driving a movable plate and a supportplate to vibrate, the support plate drives adsorption cotton to vibrate to shake off the dust on an outer surface of the adsorption cotton; and meanwhile, the vibration is utilized to enable the duston the outer surface of a circuit board in the voice box to produce resonance; a fan works in the end, the dust in a circuit board installation cabin is sucked out through a pass pipe and a conduit, the dust is discharged from a dust discharge pipe; the entire can realize the automatic cleaning on the dust in the voice box, and the condition that the dust vibrates along with the sound to influencethe tone quality of the whole voice box due to dust accumulation is avoided.

The invention discloses loudspeaker heat dissipation protection equipment. The loudspeaker heat dissipation protection equipment comprises a machine body, wherein a working cavity with an upward opening is formed in the upper end face of the machine body in a communicating mode, a magnet protection cover extending upwards is fixedly arranged on the lower wall face of the working cavity, and a closing plate is fixedly arranged on the upper end face of the magnet protection cover. According to the invention, heat dissipation processing is carried out on the loudspeaker which operates at high power for a long time, the sound quality and the service life of the loudspeaker can be effectively prevented from being influenced by heat accumulation of the voice coil during operation, and external dust is effectively prevented from entering the loudspeaker by utilizing a mode of combining air cooling and water cooling. Meanwhile, the device can reduce the damage to equipment caused by water leakage, effectively avoids the breakage of the electrodes caused by the up-and-down high-frequency vibration of the voice coil through the isolation protection of the coil electrodes and provides a goodenvironment for the operation of the loudspeaker. The device also can fix the lateral position of the voice coil, and therefore, the influence of high-frequency vibration on the position of the voicecoil can be avoided.

The invention discloses a GM motor coaxial / low pitch sounder loudspeaker device. A ring-shaped cushion ring and the loudspeaker are arranged in an upper boss of a loudspeaker support and are fixed at the inner side of the support through pivots. An installation screw hole is formed at the edge of the outer edge of the support and is corresponding to a fixing hole of a vehicle body metal sheet part. The GM motor coaxial / low pitch sounder loudspeaker device has the advantages that the installation screw hole identical with the vehicle body metal sheet part is formed in the loudspeaker support, no other holes are needed to be formed again, installation is easy, the support is fixed through anti-loose bolts, the problem that the loudspeaker is damaged because of dislocation of a tapping screw connecting method after a long using time is avoided, structure of a vehicle is prevented from being damaged, reliability is high, installation working hours are reduced, installation is convenient and rapid, electric safety is guaranteed, and sound quality of the vehicle sounder is improved.

The invention discloses a central speaker mesh assembly which comprises an outer shell, a top frame and a mesh core body, a supporting frame is annularly welded and fixed to the edge of the top of the outer shell, the top frame is arranged above the supporting frame, a groove is formed in the center of the interior of the top frame, the mesh core body is detachably installed in the groove, a supporting cylinder is fixed to the top of the top frame, and the supporting cylinder is fixed to the top of the top frame. A dustproof cover is fixedly welded to the top of the supporting cylinder, through holes are evenly formed in the outer side wall of the supporting cylinder, and the groove communicates with the supporting cylinder through a sound guide hole. The supporting cylinder with the through holes evenly formed in the outer side wall is fixed to the top of the top frame, and the dustproof cover is fixed to the top of the supporting cylinder, so that sound is guided out from the side face of the supporting cylinder, and dust accumulation on the top is avoided; meanwhile, the supporting cylinder is communicated with the groove through the sound guide hole, and a net core body composed of a first metal wire net, a dustproof filtering layer and a second metal wire net is arranged in the matched groove, so that dust can be effectively prevented.

The present invention belongs to the music instrument device field, and concretely relates to a wooden guitar. The wooden guitar comprises a guitar body and a guitar head located at the top of the guitar body, the top of the guitar head and the lower portion of the guitar body are provided with s string rack configured to install strings, a cavity is arranged in the guitar body, bottom corners of the guitar body are respectively hinged with two skew plates capable of folding through an unidirectional ratchet wheel, the external portions of the skew plates are spliced with rubber sleeves configured to seal the skew plates, balls and a proper amount of lime powder are put in the rubber sleeves, the particle size of the lime powder is smaller than 0.01 mm, the surfaces of the balls are fixedly connected with two strings respectively connected with the two skew plates, and the internal surfaces of the skew plates are provided with thrust blocks configured to prevent the skew plates from overturning outwards; and the bottom surface of the guitar body is provided with a slag-drip opening, and the bottom surface of the guitar body is hinged with a slag-drip door capable of sealing the slag-drip opening. The wooden guitar can ensure the tone quality of the wooden guitar so as to avoid steam accumulation in the cavity of the guitar and prevent the wood from being wetted by steam.

The invention provides a shock-proof foot nail. The shock-proof foot nail comprises a first base, a second base, an elastic assembly, a shock transmission bolt and supporting legs. The elastic assembly is arranged in the first base and / or the second base, the upper end of the shock transmission bolt is arranged on the first base, the lower end of the shock transmission bolt is arranged on the second base, and the shock transmission bolt abuts against the elastic assembly. And the supporting legs are arranged below the second base. On one hand, the phonograph makes contact with the placement plane through the supporting legs on the shock absorption foot nails, and external vibration can be efficiently absorbed through the elastic assemblies and the shock transmission bolts; and on the otherhand, the first base, the second base, the elastic assembly, the shock transmission bolt, the supporting leg and other assemblies in the shock absorption foot nail are independent of one another, andthe isolation effect on external shock can be achieved. After the shock-proof foot nails are arranged below the phonograph, the influence of external vibration on the tone quality of the phonograph can be effectively prevented, and the phonograph is helpful to show better tone quality.