CN111885465B

CN111885465B - Loudspeaker with tone tuning function

Info

Publication number: CN111885465B
Application number: CN202010694819.8A
Authority: CN
Inventors: 王承; 刘茹; 李燕
Original assignee: Changzhou Jiuxiang Electronic Co ltd
Current assignee: Changzhou Jiuxiang Electronic Co ltd
Priority date: 2020-07-18
Filing date: 2020-07-18
Publication date: 2021-09-24
Anticipated expiration: 2040-07-18
Also published as: CN111885465A

Abstract

The invention relates to a loudspeaker with a tuning function, which relates to the technical field of loudspeakers and comprises a basin frame arranged at the bottom, wherein a circular groove-shaped metal U cup is sunken in the center of the basin frame and comprises an annular side wall and a bottom plate, a disc-shaped permanent magnet is adsorbed in the bottom plate, a washer is adsorbed on one side, away from the metal U cup, of the disc-shaped permanent magnet, a voice coil is arranged between the metal U cup and the disc-shaped permanent magnet, a diaphragm is bonded on the voice coil, damping cloth covers the diaphragm, and a front cover which forms a sealing structure with the basin frame is arranged on the damping cloth; be provided with thickness adjustment mechanism on the metal U cup, thickness adjustment mechanism is including the swivel becket in the laminating annular lateral wall outside, and the swivel becket inboard is provided with the internal thread, and the annular lateral wall inboard is close to bottom plate end arch has the snap ring, and a plurality of draw-in grooves are seted up to the snap ring near bottom plate one end. The invention has the effect of adjusting the tone quality according to the high frequency and the low frequency.

Description

Loudspeaker with tone tuning function

Technical Field

The invention relates to the technical field of loudspeakers, in particular to a loudspeaker with a tuning function.

Background

The speaker is also called a horn. It is a very common electroacoustic transducer, and can be found in electronic and electric equipment for producing sound. The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the quality of the loudspeaker has great influence on the sound quality. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the paper cone or the diaphragm vibrate and generate resonance (resonance) with the surrounding air through electromagnetic, piezoelectric or electrostatic effect to make sound.

The existing chinese patent with publication number CN103108269B discloses a speaker module and an electronic device using the speaker module, which includes a peripheral frame and a speaker unit, wherein the peripheral frame is further provided with a sound outlet, and the sound outlet is located at a side surface of the peripheral frame; the peripheral frame is provided with an opening end which is communicated with the inside and the outside of the loudspeaker module, the opening end is combined with the combination board inside the electronic device in a sealing mode, the peripheral frame, the combination board and the loudspeaker monomer form a front sound cavity and a rear sound cavity, and the front sound cavity and the rear sound cavity are of mutually spaced structures. Meanwhile, the electronic device is provided with a combination board which is combined with the opening end in a sealing way. The structure can ensure the thinning of the loudspeaker module and also ensure the acoustic performance and the output power of the loudspeaker module, and fully utilizes the internal space of the electronic device, thereby being beneficial to the realization of the thinning of the electronic device.

The above prior art solutions have the following drawbacks: although it is possible to facilitate the realization of a thinner electronic device, the speaker is too flat, and therefore, the sound adjusting capability is poor.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a loudspeaker capable of adjusting sound and tone quality.

The above object of the present invention is achieved by the following technical solutions:

a loudspeaker with a tuning function comprises a frame arranged at the bottom, wherein a circular groove-shaped metal U cup is sunken in the center of the frame, the metal U cup comprises an annular side wall and a bottom plate, a disc-shaped permanent magnet is adsorbed in the bottom plate, a washer is adsorbed on one side, away from the metal U cup, of the disc-shaped permanent magnet, a voice coil is arranged between the metal U cup and the disc-shaped permanent magnet, a diaphragm is bonded on the voice coil, damping cloth covers the diaphragm, and a front cover which forms a sealing structure with the frame is arranged on the damping cloth;

the thickness adjusting mechanism is arranged on the metal U cup and comprises a rotating ring attached to the outer side of an annular side wall, an internal thread is arranged on the inner side of the rotating ring, an external thread connected with the internal thread is arranged on the outer side of the annular side wall, the lower end of the rotating ring is circumferentially and fixedly connected with the outer side of the bottom plate, a clamping ring is arranged on the inner side of the annular side wall and is close to the end of the bottom plate in a protruding mode, a plurality of clamping grooves are formed in the clamping ring close to one end of the bottom plate, through holes are formed in the bottom plate, fixing rods are inserted into the through holes, and the fixing rods penetrate through the through holes and are fixed in the clamping grooves.

Through adopting above-mentioned technical scheme, the staff charges to the voice coil loudspeaker voice coil, has just produced corresponding magnetic field in the voice coil loudspeaker voice coil, and this magnetic field produces the interact power with the magnetic field that the disc permanent magnet produced. This force then causes the voice coil to vibrate with the audio current in the magnetic field of the disc-shaped permanent magnet of the loudspeaker, and because the diaphragm and voice coil are coupled, the diaphragm also vibrates. The vibration produces a sound having the same waveform as the original audio signal. When tone quality is required to be adjusted, the rotating ring is rotated, the thickness of the metal U cup is adjusted upwards or downwards by the rotating ring, so that the height of the disc-shaped permanent magnet and the height of the voice coil in the metal U cup are adjusted, the vibration area of the voice coil is controlled, and tone quality is controlled. When the staff adjusted the angle that wants, in inserting the dead lever draw-in groove, be fixed in the snap ring with the bottom plate on to be fixed in annular lateral wall with the bottom plate. Simultaneously, when adjusting the height of disk permanent magnet and voice coil loudspeaker voice coil in the metal U cup, the voice coil loudspeaker voice coil pulling diaphragm to adjust the angle of diaphragm, promote the vibrations mode and the pronunciation quality of pronunciation with the diaphragm once more.

The present invention in a preferred example may be further configured to: the fixed rod is in threaded connection with the clamping groove.

Through adopting above-mentioned technical scheme, through dead lever and draw-in groove threaded connection, can increase the closeness of being connected between dead lever and the draw-in groove, reduce the dead lever and insert the condition that takes place to drop behind the draw-in groove.

The present invention in a preferred example may be further configured to: and a second fixing bolt abutted against the annular side wall is connected to the rotating ring through threads.

Through adopting above-mentioned technical scheme, through rotating second fixing bolt, can the butt and fix on annular lateral wall to fix the swivel becket on annular lateral wall, fix once more.

The present invention in a preferred example may be further configured to: and a sound expansion groove is sunken at the position of the disc-shaped permanent magnet opposite to the clamping ring.

Through adopting above-mentioned technical scheme, through expanding the sound groove, can make to have certain distance between snap ring and the disc permanent magnet to keep the interval between metal U cup and the disc permanent magnet, improve the stability that sound takes place, reduce the arch of snap ring, to the influence of sound quality.

The present invention in a preferred example may be further configured to: and a reinforcing and stabilizing ring is arranged at the joint of the diaphragm and the voice coil.

Through adopting above-mentioned technical scheme, when the voice coil loudspeaker voice coil because the deepening of adjusting metal U cup or when becoming shallow, the voice coil loudspeaker voice coil drags the diaphragm, through consolidating the stable ring, can make the diaphragm expand downwards or pack up, non-deformable or damage, simultaneously, the change of diaphragm also can arouse the change of the high frequency and the low frequency of sound.

The present invention in a preferred example may be further configured to: and a thickening layer is arranged on the reinforcing and stabilizing ring, and the thickness of the thickening layer is 0.5-0.7 mm.

Through adopting above-mentioned technical scheme, through the thickening layer, can prolong the life-span of consolidating the stationary ring. After the diaphragm deforms for multiple times, the breakage or the cracking of the bent part of the diaphragm can be reduced, and the breakage condition of the reinforcing stabilizing ring is reduced.

The present invention in a preferred example may be further configured to: the front cover extends outwards to form a sound amplification sheet, and a plurality of fluctuation grooves are formed in one inward side of the sound amplification sheet.

By adopting the technical scheme, when the vibration emitted by the diaphragm is transmitted outwards through the front cover through the sound amplifying sheet, the way of outwards transmitting sound is increased, and the transmitted volume is increased. Through undulant groove, can increase the surface area of megaphone towards one side on the one hand to increase the plane of reflection of sound, further improve the volume, on the other hand when sound contacts the different undulant face of reflection angle, can be through a plurality of directions reflection sound, promote the stereoeffect of sound.

The present invention in a preferred example may be further configured to: the quantity of draw-in groove is 16, draw-in groove internal fixation is provided with pop-up spring.

Through adopting above-mentioned technical scheme, through 16 draw-in grooves of evenly distributed to the swivel becket can rotate 16 different angles, makes the dead lever can insert the draw-in groove with 16 different positions, thereby has the not co-altitude of 16 metal U cups, and accommodation range is big.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when tone quality needs to be adjusted, the staff rotates the swivel becket, upwards or adjust the thickness of adjusting metal U cup with the swivel becket downwards, controls the region of voice coil loudspeaker voice coil vibrations, adjusts the range that the voice coil loudspeaker voice coil drove the diaphragm shake, and the frequency of control sound emission to adjust tone quality. Meanwhile, when the heights of the disc-shaped permanent magnet and the voice coil in the metal U cup are adjusted, the voice coil pulls the diaphragm, so that the angle of the diaphragm is adjusted, and the vibration mode and the sounding quality of the sounding of the diaphragm are improved again;

2. through the sound expansion groove, a certain distance can be reserved between the clamping ring and the disc-shaped permanent magnet, so that the distance between the metal U cup and the disc-shaped permanent magnet is kept, the sound generation stability is improved, and the influence of the bulge of the clamping ring on the sound quality is reduced;

3. through the sound amplifying sheet, when the vibration emitted by the diaphragm is transmitted outwards through the front cover, the way of outwards transmitting sound is increased, and the volume of the transmitted sound is increased. Through undulant groove, can increase the surface area of megaphone towards one side on the one hand to increase the plane of reflection of sound, further improve the volume, on the other hand when sound contacts the different undulant face of reflection angle, can be through a plurality of directions reflection sound, promote the stereoeffect of sound.

Drawings

Fig. 1 is a schematic structural view of the whole of the present embodiment.

Fig. 2 is a schematic view of an internal cross section of the present embodiment.

Fig. 3 is a schematic structural diagram of 16 card slots in the present embodiment.

In the figure, 1, a basin stand; 2. a metal U-cup; 21. an annular sidewall; 22. a base plate; 221. through holes; 3. a disk-shaped permanent magnet; 31. a sound amplification groove; 4. washer; 5. a voice coil; 51. a membrane; 511. reinforcing the stabilizing ring; 512. thickening the layer; 52. damping cloth; 53. a front cover; 531. a sound amplification sheet; 532. a surge tank; 6. thickness adjusting purchasing machine; 61. a rotating ring; 611. an internal thread; 62. an external thread; 63. a snap ring; 631. a card slot; 632. ejecting a spring; 64. fixing the rod; 65. and a second fixing bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the speaker with a tuning function disclosed by the invention comprises a frame 1 arranged at the bottom, wherein a circular groove-shaped metal U-cup 2 is sunken in the center of the frame 1, the metal U-cup 2 comprises an annular side wall 21 and a bottom plate 22 fixed on the annular side wall 21, and the bottom plate 22 and the annular side wall 21 form a cup shape. A disc-shaped permanent magnet 3 is adsorbed in the bottom plate 22, a washer 4 is adsorbed on one side, away from the metal U-shaped cup 2, of the disc-shaped permanent magnet 3, a voice coil 5 tightly attached to the disc-shaped permanent magnet 3 is arranged between the metal U-shaped cup 2 and the disc-shaped permanent magnet 3, and a diaphragm 51 is bonded to the upper end of the voice coil 5. When the voice coil 5 is electrically conducted, a corresponding magnetic field is generated in the voice coil 5, and the magnetic field generated by the disk-shaped permanent magnet 3 generate an interaction force, so that the voice coil 5 is controlled to vibrate, the diaphragm 51 is driven to vibrate, and then sound is produced.

Referring to fig. 2, the diaphragm 51 is covered with a damping cloth 52 for reducing dust entering the interior, a front cover 53 forming a sealing structure with the basin frame 1 is arranged on the damping cloth 52, in the embodiment, the front cover 53 extends outwards to form a sound amplification sheet 531 facilitating sound to spread outwards, and the sound amplification sheet 531 is provided with a plurality of fluctuation grooves 532 towards the inner side, so that the surface area of the inward side of the sound amplification sheet 531 is increased, thereby increasing the reflection surface of sound, further improving sound transmission, and on the other hand, when sound contacts with the fluctuation surfaces with different reflection angles, sound can be reflected in a plurality of directions, and the stereo effect of sound is improved.

Referring to fig. 2, a thickness adjusting mechanism is arranged on the metal U-cup 2, the thickness adjusting mechanism includes a rotating ring 61 attached to the outer side of the annular side wall 21, meanwhile, an internal thread 611 is arranged on the inner side of the rotating ring 61, an external thread 62 in threaded connection with the internal thread 611 is arranged on the outer side of the annular side wall 21, and the bottom plate 22 is fixed at the bottom end of the rotating ring 61, after the rotating ring 61 is rotated, the rotating ring 61 and the annular side wall 21 move up and down relatively, so that the bottom plate 22 moves up and down, the disc-shaped permanent magnet 3 and the voice coil 5 are driven to move up and down, and the vibration area of the voice coil 5 is controlled. When the rotating ring 61 rotates downwards, the disc-shaped permanent magnet 3 and the voice coil 5 are driven to move downwards, so that the voice coil 5 is driven to move downwards, at the moment, the vibration range of the voice coil 5 is enlarged, the sound vibration frequency is reduced, the low-frequency effect is improved, and when the vibration range of the voice coil 5 is reduced, the high-frequency effect is improved. In the embodiment, because the voice coil 5 moves up and down to pull the diaphragm 51 downwards, so as to drive the diaphragm 51 to move up and down, a reinforcing stabilizing ring 511 is arranged at the joint of the voice coil 5 and the diaphragm 51, and a thickening layer 512 with the thickness of 0.5-0.7 is arranged on the reinforcing stabilizing ring 511, so that after the voice coil 5 moves up and down, the shape of the diaphragm 51 can be changed simultaneously, and the sound emitted by the diaphragm 51 can be changed. When the diaphragm 51 is pulled downwards, the two ends of the diaphragm 51 are tilted, the vibration amplitude is increased, so that the quality of the high frequency band of the generated sound is improved, and when the diaphragm 51 is lifted and tends to be in a flat state, the vibration amplitude is reduced, and the quality of the low frequency band of the generated sound is improved.

Referring to fig. 2 and 3, in order to fix the rotating ring 61, a snap ring 63 is protruded at an end of the inner side of the annular sidewall 21 near the bottom plate 22, one end of the snap ring 63 near the bottom plate 22 is circumferentially provided with 16 clamping grooves 631, a through hole 221 is formed in the bottom plate 22, a fixing rod 64 is inserted into the through hole 221, the fixing rod 64 passes through the through hole 221 and is in threaded connection with the clamping groove 631, and when the rotating ring is rotated to a desired angle by a user, the fixing rod 64 is rotated into the clamping groove 631 to fix the bottom plate 22, thereby fixing the rotating ring 61. In order to further fix the rotating ring 61, a second fixing bolt 65 which abuts against the annular side wall 21 is screwed to the rotating ring 61, and can abut against and be fixed to the annular side wall 21, so that the rotating ring 61 is fixed to the annular side wall 21 and can be fixed again.

Referring to fig. 2, a sound amplifying groove is recessed at a position where the disc-shaped permanent magnet 3 is opposite to the snap ring 63, so that a certain distance is ensured between the metal U-cup 2 and the disc-shaped permanent magnet 3, the situation that the voice coil 5 accidentally touches the snap ring 63 is reduced, and the stability of sound generation is improved.

The implementation principle of the embodiment is as follows: the voice coil 5 is charged by the staff, a magnetic field is generated in the voice coil 5, an interaction force is generated between the voice coil 5 and the magnetic field generated by the disc-shaped permanent magnet 3, the voice coil 5 is vibrated along with the audio current in the magnetic field of the disc-shaped permanent magnet 3 of the loudspeaker by the interaction force, and then the diaphragm 51 and the voice coil 5 are connected together, so that the diaphragm 51 is also vibrated, and the vibration generates the sound with the same waveform as the original audio signal. When tone quality is adjusted to needs, the user rotates swivel 61, with swivel 61 downstream, thickens the thickness of metal U cup 2, drives disk permanent magnet 3 and voice coil loudspeaker voice coil 5 downstream to drive voice coil loudspeaker voice coil 5 downstream, at this moment, voice coil loudspeaker voice coil 5's vibration scope grow, and sound vibration frequency reduces, and the low frequency effect promotes, and when voice coil loudspeaker voice coil 5's vibration scope reduced, the high frequency effect promotes. And voice coil 5 moves down, drives diaphragm 51 and stimulates downwards, and the perk of diaphragm 51 both ends, vibration amplitude grow to promote the quality of the high frequency channel of taking place sound, on the contrary, when voice coil 5 moved upwards, vibration amplitude reduced, the low frequency effect promoted. Meanwhile, the diaphragm 51 is also lifted, so that when the diaphragm 51 tends to be in a flat state, the vibration amplitude is reduced, and the quality of a low frequency band of generated sound is improved.

When the worker adjusts the desired angle, the fixing rod 64 is inserted into the locking groove 631, and the bottom plate 22 is fixed to the snap ring 63, so that the bottom plate 22 is fixed to the annular side wall 21. The second fixing bolt 65 is then rotated to fix the rotating ring 61 to the annular side wall 21.

When the sound is transmitted outward, the volume of the transmitted sound is increased by the sound amplification piece 531. Through the wave groove 532, on the one hand can increase the surface area of the inward side of the sound expansion piece 531, thereby increasing the reflection surface of the sound and further increasing the volume, and on the other hand, when the sound contacts the wave surface with different reflection angles, the sound can be reflected through a plurality of directions, thereby improving the stereo effect of the sound.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A speaker with tuning function, characterized in that: the improved bathtub comprises a bathtub frame (1) arranged at the bottom, wherein a circular groove-shaped metal U cup (2) is sunken in the center of the bathtub frame (1), the metal U cup (2) comprises an annular side wall (21) and a bottom plate (22), a disc-shaped permanent magnet (3) is adsorbed in the bottom plate (22), a washer (4) is adsorbed on one side, away from the metal U cup (2), of the disc-shaped permanent magnet (3), a voice coil (5) is arranged in the metal U cup (2) and between the disc-shaped permanent magnet (3), a diaphragm (51) is bonded on the voice coil (5), damping cloth (52) covers the diaphragm (51), and a front cover (53) forming a sealing structure with the bathtub frame (1) is arranged on the damping cloth (52);

the thickness adjusting mechanism is arranged on the metal U cup (2) and comprises a rotating ring (61) attached to the outer side of the annular side wall (21), an internal thread (611) is arranged on the inner side of the rotating ring (61), an external thread (62) in threaded connection with the internal thread (611) is arranged on the outer side of the annular side wall (21), the lower end of the rotating ring (61) is fixedly connected with the outer side of the bottom plate (22) in the circumferential direction, a clamping ring (63) protrudes from the end, close to the bottom plate (22), of the inner side of the annular side wall (21), a plurality of clamping grooves (631) are formed in the end, close to the bottom plate (22), of the clamping ring (63), a through hole (221) is formed in the bottom plate (22), a fixing rod (64) is inserted into the through hole (221), and the fixing rod (64) penetrates through the through hole (221) and is fixed in the clamping grooves (631);

a sound expansion groove is sunken at the position, opposite to the clamping ring (63), of the disc-shaped permanent magnet (3);

the front cover (53) extends outwards to form a sound amplifying sheet (531), and one inward side of the sound amplifying sheet (531) is provided with a plurality of fluctuation grooves (532).

2. A speaker with tuning function according to claim 1, wherein: the fixing rod (64) is in threaded connection with the clamping groove (631).

3. A speaker with tuning function according to claim 2, wherein: and a second fixing bolt (65) abutted against the annular side wall (21) is connected to the rotating ring (61) in a threaded manner.

4. A speaker with tuning function according to claim 3, wherein: and a reinforcing and stabilizing ring (511) is arranged at the joint of the diaphragm (51) and the voice coil (5).

5. A loudspeaker with a tuning function according to claim 4, characterized in that: the reinforcing and stabilizing ring (511) is provided with a thickening layer (512), and the thickness of the thickening layer (512) is 0.5-0.7 mm.

6. A speaker with tuning function according to claim 5, wherein: the number of the clamping grooves (631) is 16, and the spring (632) is fixedly arranged in each clamping groove (631).