CN209914058U - Novel yoke type magnetic circuit titanium unit loudspeaker - Google Patents

Abstract

The utility model discloses a novel yoke type magnetic circuit titanium unit loudspeaker, which comprises a titanium support, a circuit board, a yoke type magnetic conduction plate, a magnet, a vibration sound film and a voice coil; the front surface of the titanium support is provided with an accommodating cavity, and the center of the front surface and the center of the back surface of the titanium support are penetrated to form a first through hole; the circuit board is fixed on the back of the titanium support in an overlapped mode, a second through hole is formed in the circuit board, and the second through hole is communicated with the first through hole in an opposite mode; the yoke type magnetic conduction plate and the magnet are both arranged in the accommodating cavity. By adopting the titanium support and utilizing the physical characteristics of titanium metal, the rigidity and the analytic force of an acoustic cavity in the loudspeaker can be increased, the audio response speed of the loudspeaker can be improved, and ideal tone dynamic response and sound field transient response can be obtained. By adopting the yoke type magnetic conduction plate, the magnetic loss of the magnetic conduction material in the unit can be better restrained and controlled, the magnetic energy of the magnetic field of the loudspeaker is enhanced, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated.

Description

Novel yoke type magnetic circuit titanium unit loudspeaker

Technical Field

The utility model belongs to the technical field of the speaker technique and specifically relates to indicate a novel yoke formula magnetic circuit titanium unit speaker.

Background

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.

In the existing loudspeaker, a support is generally made of plastic or common metal materials, so that the rigidity and the resolving power of an acoustic cavity in the loudspeaker are insufficient, the audio response speed of the loudspeaker is low, and ideal tone dynamic response and sound field transient response are difficult to obtain; in addition, the existing loudspeaker adopts a common magnetic conduction plate, and the magnetic loss of the magnetic conduction material in the unit cannot be restrained and controlled. Therefore, there is a need for improvements in current speakers.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a yoke-type magnetic circuit titanium unit speaker, which can effectively solve the problem that the rigidity and the resolving power of the acoustic cavity inside the speaker are not sufficient and the magnetic loss of the magnetic conductive material inside the control unit cannot be restrained.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel yoke type magnetic circuit titanium unit loudspeaker comprises a titanium support, a circuit board, a yoke type magnetic conduction plate, a magnet, a vibration sound film and a voice coil; the front surface of the titanium support is provided with an accommodating cavity, and the center of the front surface and the center of the back surface of the titanium support are penetrated to form a first through hole; the circuit board is fixed on the back of the titanium support in an overlapped mode, a second through hole is formed in the circuit board, and the second through hole is communicated with the first through hole in an opposite mode; the yoke type magnetic conduction plate and the magnet are both arranged in the accommodating cavity; the vibration sound film is fixed on the front surface of the titanium support through a vibration damping ring and covers the yoke type magnetic conduction plate and the magnet; one end of the voice coil is fixed on the inner side face of the vibration sound film, the other end of the voice coil extends into the annular accommodating groove, and the voice coil is in conduction connection with the circuit board.

Preferably, the back of the titanium support is concavely provided with a sound damping cavity, the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity, the accommodating cavity is annular and is positioned at the periphery of the sound damping cavity, the yoke type magnetic conduction plate is fixed on the bottom surface of the accommodating cavity in an overlapped mode, the magnet is an outer magnet and is fixed on the front of the yoke type magnetic conduction plate in an overlapped mode, an annular accommodating groove is formed between the inner side wall of the magnet and the outer side wall of the yoke type magnetic conduction plate, the voice coil is suspended in the annular accommodating groove, and the outer magnetic pole piece is fixed on the front of the magnet in an overlapped mode.

Preferably, the back of the titanium support is concavely provided with a sound damping cavity, the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity, the accommodating cavity is annular and is positioned at the periphery of the sound damping cavity, the yoke type magnetic conduction plate is fixed on the bottom surface of the accommodating cavity in an overlapped mode, the magnet is an inner magnet and is fixed on the front of the yoke type magnetic conduction plate in an overlapped mode, an annular accommodating groove is formed between the outer side wall of the magnet and the inner side wall of the yoke type magnetic conduction plate, the voice coil is suspended in the annular accommodating groove, and the inner magnetic pole piece is fixed on the front of the magnet in an overlapped mode.

Preferably, the yoke type magnetic conduction plate is concave and is superposed and fixed on the bottom surface of the accommodating cavity, and a third through hole is formed in the yoke type magnetic conduction plate; this magnetite is interior magnetite and coincide and fixes in yoke formula magnetic conduction board, the front and the back of magnetite run through and are formed with the sound damping cavity, and the front coincide of magnetite is fixed with interior magnetic pole piece, the front and the back of this interior magnetic pole piece run through and are formed with the fourth through-hole, this fourth through-hole, the sound damping cavity, the third through-hole, first through-hole and second through-hole communicate in proper order, and be formed with annular accommodation groove between the lateral wall of magnetite and the inside wall of yoke formula magnetic conduction board, this voice coil loudspeaker voice coil hangs in the annular accommodation groove.

Preferably, the yoke type magnetic conduction plate is fixed on the bottom surface of the containing cavity in an overlapped mode, a concave position is concavely arranged in the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is formed in the center of the bottom surface of the concave position, an annular containing groove is concavely arranged on the front surface of the yoke type magnetic conduction plate, and the annular containing groove is located on the periphery of the concave position; the magnet is an inner magnet and is positioned in the concave position, the front surface and the back surface of the magnet penetrate through to form a sound damping cavity, and the fifth through hole, the sound damping cavity, the first through hole and the second through hole are communicated in sequence; the voice coil is suspended in the annular accommodating groove.

Preferably, the magnet is an inner magnet and is overlapped and fixed on the bottom surface of the accommodating cavity, the front surface and the back surface of the magnet penetrate through the accommodating cavity to form a sound damping cavity, the first through hole and the second through hole are sequentially communicated, tuning cloth is fixedly overlapped on the front surface of the magnet, and the tuning cloth covers an opening on the front surface of the sound damping cavity; the yoke type magnetic conduction plate is an annular body and is fixedly overlapped on the bottom surface of the containing cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, and the voice coil is suspended in the annular containing groove.

Preferably, the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate and the magnet are overlapped and fixed on the bottom surface of the containing cavity, the magnet is an outer magnet, the magnet is sleeved on the outer side surface of the yoke type magnetic conduction plate, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, the annular containing groove is positioned on the periphery of the sound damping cavity, and the voice coil is suspended in the annular containing groove.

Preferably, the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate is of an annular plate structure and is fixedly superposed on the bottom surface of the accommodating cavity; this magnetite is including interior magnetite and outer magnetite, this interior magnetite and the equal coincide of outer magnetite are fixed in the front of yoke formula magnetic conduction board, outer magnetite be located the periphery of interior magnetite and with be formed with first annular storage tank between the interior magnetite, and the front coincide of interior magnetite is fixed with interior magnetic pole piece, the front coincide of outer magnetite is fixed with outer magnetic pole piece, form second annular storage tank between this outer magnetic pole piece and the interior magnetic pole piece, this voice coil loudspeaker voice coil passes the second annular storage tank and stretches into in the first annular storage tank.

Preferably, the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate is fixed on the bottom surface of the containing cavity in an overlapped mode, an annular concave position is arranged on the front surface of the yoke type magnetic conduction plate, and the annular concave position is located on the periphery of the sound damping cavity; this magnetite is including interior magnetite and outer magnetite, this interior magnetite and the equal coincide of outer magnetite are fixed in annular concave position, outer magnetite be located the periphery of interior magnetite and with be formed with first annular storage tank between the interior magnetite, and the front coincide of interior magnetite is fixed with interior magnetic pole piece, the front coincide of outer magnetite is fixed with outer magnetic pole piece, form second annular storage tank between this outer magnetic pole piece and the interior magnetic pole piece, this voice coil loudspeaker voice coil passes second annular storage tank and stretches into in the first annular storage tank.

Preferably, the yoke type magnetic conduction plate is fixed on the bottom surface of the containing cavity in an overlapped mode, a concave position is concavely arranged in the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is formed in the center of the bottom surface of the concave position, an annular containing groove is concavely arranged on the front surface of the yoke type magnetic conduction plate, and the annular containing groove is located on the periphery of the concave position; the magnet comprises an inner magnet and an outer magnet, the inner magnet is embedded in the concave position and is fixedly overlapped with the bottom surface of the accommodating cavity, the front surface and the back surface of the inner magnet penetrate through the accommodating cavity to form a sound damping cavity, the fifth through hole, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity, and the yoke type magnetic conduction plate covers the front surface of the outer magnet; the voice coil is suspended in the annular accommodating groove.

Preferably, the yoke type magnetic conduction plate is an annular body, the center of the yoke type magnetic conduction plate is provided with a hollow cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular accommodating groove, and the annular accommodating groove is positioned at the periphery of the hollow cavity; the magnet comprises an inner magnet and an outer magnet, the inner magnet is fixedly overlapped with the bottom surface of the accommodating cavity and is positioned in the hollow cavity, a sound damping cavity is formed by penetrating through the front surface and the back surface of the inner magnet, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, tuning cloth is fixedly overlapped on the front surface of the inner magnet, the tuning cloth covers a front opening of the sound damping cavity, and the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity; the voice coil is suspended in the annular accommodating groove.

Preferably, the yoke type magnetic conduction plate is fixed on the bottom surface of the containing cavity in an overlapped mode, a concave position is concavely arranged in the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is formed in the center of the bottom surface of the concave position, an annular containing groove is concavely arranged on the front surface of the yoke type magnetic conduction plate, and the annular containing groove is located on the periphery of the concave position; the magnet comprises an inner magnet and an outer magnet, the inner magnet is embedded in the concave position and is fixedly overlapped with the bottom surface of the accommodating cavity, the front surface and the back surface of the inner magnet penetrate through the accommodating cavity to form a sound damping cavity, the fifth through hole, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, and the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity; the voice coil is suspended in the annular accommodating groove.

Preferably, the yoke type magnetic conduction plate is an annular body and is fixedly overlapped on the bottom surface of the accommodating cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular accommodating groove, and the voice coil is suspended in the annular accommodating groove; the magnet comprises an inner magnet and an outer magnet, the inner magnet and the outer magnet are fixed on the bottom surface of the accommodating cavity in an overlapped mode, the yoke type magnetic conduction plate is clamped between the inner magnet and the outer magnet, a sound damping cavity is formed by penetrating through the front surface and the back surface of the inner magnet, the sound damping cavity, the first through hole and the second through hole are communicated in sequence, tuning cloth is fixed on the front surface of the inner magnet in an overlapped mode, and the front opening of the sound damping cavity is covered by the tuning cloth.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

by adopting the titanium support and utilizing the physical characteristics of titanium metal, the rigidity and the analytic force of an acoustic cavity in the loudspeaker can be increased, the audio response speed of the loudspeaker can be improved, and ideal tone dynamic response and sound field transient response can be obtained. By adopting the yoke type magnetic conduction plate, the magnetic loss of the magnetic conduction material in the unit can be better restrained and controlled, the magnetic energy of the magnetic field of the loudspeaker is enhanced, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic cross-sectional view of a first preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a second preferred embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a third preferred embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a fourth preferred embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a fifth preferred embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a sixth preferred embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a seventh preferred embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of an eighth preferred embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of a ninth preferred embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of a tenth preferred embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of an eleventh preferred embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a twelfth preferred embodiment of the present invention.

The attached drawings indicate the following:

10. titanium support 11 and accommodating cavity

12. First through hole 13, sound damping cavity

101. Annular containing groove 102 and annular containing groove

103. Annular containing groove

20. Circuit board 21 and second through hole

30. Yoke type magnetic conduction plate 31 and third through hole

32. Concave position 33, fifth through hole

34. Annular accommodation groove 35, annular accommodation groove

36. Annular receiving groove 37, annular recess

38. Center cavity 40, magnetite

41. Inner magnet 42, outer magnet

401. Sound damping cavity 402, sound damping cavity

403. Sound damping cavity 404, first annular receiving groove

405. Sound damping cavity

50. Diaphragm 60 and voice coil

71. Damping ring 72 and outer pole piece

73. Inner pole piece 74, inner pole piece

75. Sound-adjusting cloth 76 and inner magnetic pole piece

77. Outer magnetic pole piece

701. A fourth through hole 702, a second annular receiving groove.

Detailed Description

Referring to fig. 1, a specific structure of a first preferred embodiment of the present invention is shown, which includes a titanium support 10, a circuit board 20, a yoke-type magnetic conductive plate 30, a magnet 40, a vibrating diaphragm 50 and a voice coil 60.

The front surface of the titanium support 10 is provided with an accommodating cavity 11, and the front center and the back center of the titanium support 10 are penetrated to form a first through hole 12; the circuit board 20 is fixed on the back of the titanium support 10 in an overlapping manner, a second through hole 21 is formed in the circuit board 20, and the second through hole 21 is in opposite communication with the first through hole 12; the yoke type magnetic conduction plate 30 and the magnet 40 are both arranged in the accommodating cavity 11; the vibration sound film 50 is fixed on the front surface of the titanium support 10 through a vibration damping ring 71 and covers the yoke type magnetic conduction plate 30 and the magnet 40; one end of the voice coil 60 is fixed on the inner side surface of the diaphragm 50, the other end of the voice coil 60 extends into the annular accommodating groove 101, and the voice coil 60 is electrically connected with the circuit board 20.

In this embodiment, a sound damping cavity 13 is concavely provided on the back of the titanium support 10, the second through hole 21 and the first through hole 12 are respectively communicated with two sides of the sound damping cavity 13, the accommodating cavity 11 is annular and is located on the periphery of the sound damping cavity 13, the first through hole 12 is a sound guide hole, the second through hole 21 is a sound adjustment hole, the inner diameter of the second through hole 21 is smaller than the inner diameter of the first through hole 12, and the inner diameters of the first through hole 12 and the second through hole 21 are both smaller than the inner diameter of the sound damping cavity 13; the yoke type magnetic conduction plate 30 is fixed on the bottom surface of the containing cavity 11 in an overlapping mode, the magnet 40 is an outer magnet and is fixed on the front surface of the yoke type magnetic conduction plate 30 in an overlapping mode, an annular containing groove 101 is formed between the inner side wall of the magnet 40 and the outer side wall of the yoke type magnetic conduction plate 30, the voice coil 60 is suspended in the annular containing groove 101, and the outer magnetic pole piece 72 is fixed on the front surface of the magnet 40 in an overlapping mode.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the magnet 40 and the outer magnetic pole piece 72 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to produce sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 13 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 2, a specific structure of a second preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in the present embodiment, the inner diameter of the sound damping cavity 13 is smaller than that of the first preferred embodiment, the yoke magnetic conduction plate 30 is overlapped and fixed on the bottom surface of the accommodating cavity 11, the magnet 40 is an inner magnet and is overlapped and fixed on the front surface of the yoke magnetic conduction plate 30, an annular accommodating groove 102 is formed between the outer side wall of the magnet 40 and the inner side wall of the yoke magnetic conduction plate 30, the voice coil 60 is suspended in the annular accommodating groove 102, and the inner pole piece 73 is overlapped and fixed on the front surface of the magnet 40.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the magnet 40 and the inner magnetic pole piece 73 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to produce sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 13 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 3, a specific structure of a third preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is concave and is overlapped and fixed on the bottom surface of the accommodating cavity 11, and the yoke magnetic conductive plate 30 is provided with a third through hole 31; the magnet 40 is an inner magnet and is overlapped and fixed in the yoke type magnetic conduction plate 30, a sound damping cavity 401 is formed by penetrating through the front surface and the back surface of the magnet 40, an inner magnetic pole piece 74 is overlapped and fixed on the front surface of the magnet 40, a fourth through hole 701 is formed by penetrating through the front surface and the back surface of the inner magnetic pole piece 74, the fourth through hole 701, the sound damping cavity 401, the third through hole 31, the first through hole 12 and the second through hole 21 are sequentially communicated, the fourth through hole 701 and the third through hole 31 are sound guide holes, the first through hole 12 is a sound adjustment hole, and the second through hole 21 is a sound guide hole; and an annular accommodating groove 103 is formed between the outer side wall of the magnet 40 and the inner side wall of the yoke-type magnetic conduction plate 30, and the voice coil 60 is suspended in the annular accommodating groove 103.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the magnet 40 and the inner magnetic pole piece 74 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, the magnetic energy generated under the action of current pushes the voice coil 60 to drive the vibration sound diaphragm 50 to produce sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 401 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 4, a specific structure of a fourth preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is fixed on the bottom surface of the accommodating cavity 11 in an overlapping manner, a concave portion 32 is concavely disposed at the center of the back surface of the yoke magnetic conductive plate 30, a fifth through hole 33 is disposed at the center of the bottom surface of the concave portion 32, an annular accommodating groove 34 is concavely disposed at the front surface of the yoke magnetic conductive plate 30, and the annular accommodating groove 34 is disposed at the periphery of the concave portion 32; the magnet 40 is an inner magnet and is positioned in the concave 32, the front and the back of the magnet 40 are penetrated to form a sound damping cavity 402, the fifth through hole 33, the sound damping cavity 402, the first through hole 12 and the second through hole 21 are sequentially communicated, the fifth through hole 33 is a sound guide hole, the first through hole 12 is a sound adjusting hole, and the second through hole 21 is a sound guide hole; the voice coil 60 is suspended in the annular accommodation groove 34.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30 and the magnet 40 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, the magnetic energy generated under the action of current pushes the voice coil 60 to drive the vibration sound diaphragm 50 to generate sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound color of a sound is generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 402 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 5, a specific structure of a fifth preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the magnet 40 is an internal magnet and is overlapped and fixed on the bottom surface of the accommodating cavity 11, a sound damping cavity 403 is formed through the front surface and the back surface of the magnet 40, the sound damping cavity 403, the first through hole 12 and the second through hole 21 are sequentially communicated, a tuning cloth 75 is fixed on the front surface of the magnet 40 in an overlapped mode, and the tuning cloth 75 covers the front opening of the sound damping cavity 403; the yoke magnetic conductive plate 30 is an annular body and is overlapped and fixed on the bottom surface of the accommodating cavity 11, the front surface of the yoke magnetic conductive plate 30 is concavely provided with an annular accommodating groove 35, and the voice coil 60 is suspended in the annular accommodating groove 35.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30 and the magnet 40 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, the magnetic energy generated under the action of current pushes the voice coil 60 to drive the vibration sound diaphragm 50 to generate sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound color of a sound is generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 403 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 6, a specific structure of a sixth preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the back of the titanium support 10 is concavely provided with a sound damping cavity 13, and the second through hole 21 and the first through hole 12 are respectively communicated with two sides of the sound damping cavity 13; the yoke magnetic conductive plate 30 and the magnet 40 are both fixed on the bottom surface of the accommodating cavity 11 in an overlapped manner, the magnet 40 is an outer magnet, the magnet 40 is sleeved on the outer side surface of the yoke magnetic conductive plate 30, the front surface of the yoke magnetic conductive plate 30 is concavely provided with an annular accommodating groove 36, the annular accommodating groove 36 is positioned on the periphery of the sound damping cavity 13, and the voice coil 60 is suspended in the annular accommodating groove 36.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30 and the magnet 40 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, the magnetic energy generated under the action of current pushes the voice coil 60 to drive the vibration sound diaphragm 50 to generate sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound color of a sound is generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 13 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 7, a specific structure of a seventh preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the back of the titanium support 10 is concavely provided with a sound damping cavity 13, and the second through hole 21 and the first through hole 12 are respectively communicated with two sides of the sound damping cavity 13; the yoke type magnetic conduction plate 30 is an annular plate structure, and is superposed and fixed on the bottom surface of the accommodating cavity 11; the magnet 40 includes an inner magnet 41 and an outer magnet 42, the inner magnet 41 and the outer magnet 42 are both fixed on the front surface of the yoke-type magnetic conduction plate 30 in an overlapping manner, the outer magnet 42 is located on the periphery of the inner magnet 41 and forms a first annular accommodation groove 404 with the inner magnet 41, the front surface of the inner magnet 41 is fixed with an inner magnetic pole piece 76 in an overlapping manner, the front surface of the outer magnet 42 is fixed with an outer magnetic pole piece 77 in an overlapping manner, a second annular accommodation groove 702 is formed between the outer magnetic pole piece 77 and the inner magnetic pole piece 76, and the voice coil 60 passes through the second annular accommodation groove 702 and extends into the first annular accommodation groove 404.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the magnet 40 and the outer magnetic pole piece 77 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to produce sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 13 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 8, a specific structure of an eighth preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the back of the titanium support 10 is concavely provided with a sound damping cavity 13, and the second through hole 21 and the first through hole 12 are respectively communicated with two sides of the sound damping cavity 13; the yoke type magnetic conduction plate 30 is fixed on the bottom surface of the containing cavity 11 in an overlapping way, the front surface of the yoke type magnetic conduction plate 30 is provided with an annular concave position 37, and the annular concave position 37 is positioned at the periphery of the sound damping cavity 13; the magnet 40 includes an inner magnet 41 and an outer magnet 42, the inner magnet 41 and the outer magnet 42 are both fixed in the annular recess 37 in an overlapping manner, the outer magnet 42 is located at the periphery of the inner magnet 41 and forms a first annular accommodating groove 404 with the inner magnet 41, the front surface of the inner magnet 41 is fixed with an inner magnetic pole piece 76 in an overlapping manner, the front surface of the outer magnet 42 is fixed with an outer magnetic pole piece 77 in an overlapping manner, a second annular accommodating groove 702 is formed between the outer magnetic pole piece 77 and the inner magnetic pole piece 76, and the voice coil 60 passes through the second annular accommodating groove 702 and extends into the first annular accommodating groove 404.

When the magnetic diaphragm works, the yoke type magnetic conduction plate 30, the inner magnet 41, the inner magnetic pole piece 76, the outer magnet 42 and the outer magnetic pole piece 77 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound tone is generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 13 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 9, a detailed structure of a ninth preferred embodiment of the present invention is shown, the detailed structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is fixed on the bottom surface of the accommodating cavity 11 in an overlapping manner, a concave portion 32 is concavely disposed at the center of the back surface of the yoke magnetic conductive plate 30, a fifth through hole 33 is disposed at the center of the bottom surface of the concave portion 32, an annular accommodating groove 34 is concavely disposed at the front surface of the yoke magnetic conductive plate 30, and the annular accommodating groove 34 is disposed at the periphery of the concave portion 32; the magnet 40 comprises an inner magnet 41 and an outer magnet 42, the inner magnet 41 is embedded in the concave 32 and is overlapped and fixed with the bottom surface of the accommodating cavity 11, the front surface and the back surface of the inner magnet 41 penetrate through to form a sound damping cavity 405, the fifth through hole 33, the sound damping cavity 405, the first through hole 12 and the second through hole 21 are sequentially communicated, the outer magnet 42 is sleeved on the outer side wall of the yoke type magnetic conduction plate 30 and is overlapped and fixed with the bottom surface of the accommodating cavity 11, and the yoke type magnetic conduction plate 30 covers the front surface of the outer magnet 42; the voice coil 60 is suspended in the annular accommodation groove 34.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the inner magnet 41 and the outer magnet 42 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 405 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 10, a detailed structure of a tenth preferred embodiment of the present invention is shown, the detailed structure of this embodiment is substantially the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is an annular body, the center of which has a hollow cavity 38, the front surface of the yoke magnetic conductive plate 30 is concavely provided with an annular accommodating groove 34, and the annular accommodating groove 34 is located at the periphery of the hollow cavity 38; the magnet 40 comprises an inner magnet 41 and an outer magnet 42, the inner magnet 41 is fixedly overlapped with the bottom surface of the accommodating cavity 11 and is positioned in the hollow cavity 38, a sound damping cavity 405 is formed by penetrating the front surface and the back surface of the inner magnet 41, the sound damping cavity 405, the first through hole 12 and the second through hole 21 are sequentially communicated, a tuning cloth 75 is fixedly overlapped on the front surface of the inner magnet 41, the tuning cloth 75 covers the front opening of the sound damping cavity 405, and the outer magnet 42 is sleeved on the outer side wall of the yoke type magnetic conduction plate 30 and fixedly overlapped with the bottom surface of the accommodating cavity 11; the voice coil 60 is suspended in the annular accommodation groove 34.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the inner magnet 41 and the outer magnet 42 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 405 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 11, a specific structure of an eleventh preferred embodiment of the present invention is shown, the specific structure of this embodiment is substantially the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is fixed on the bottom surface of the accommodating cavity 11 in an overlapping manner, a concave portion 32 is concavely disposed at the center of the back surface of the yoke magnetic conductive plate 30, a fifth through hole 33 is disposed at the center of the bottom surface of the concave portion 32, an annular accommodating groove 34 is concavely disposed at the front surface of the yoke magnetic conductive plate 30, and the annular accommodating groove 34 is disposed at the periphery of the concave portion 32; the magnet 40 comprises an inner magnet 41 and an outer magnet 42, the inner magnet 41 is embedded in the concave 32 and is overlapped and fixed with the bottom surface of the accommodating cavity 11, the front surface and the back surface of the inner magnet 41 penetrate through to form a sound damping cavity 405, the fifth through hole 33, the sound damping cavity 405, the first through hole 12 and the second through hole 21 are sequentially communicated, and the outer magnet 42 is sleeved on the outer side wall of the yoke type magnetic conduction plate 30 and is overlapped and fixed with the bottom surface of the accommodating cavity 11; the voice coil 60 is suspended in the annular accommodation groove 34.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the inner magnet 41 and the outer magnet 42 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 405 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

Referring to fig. 12, a specific structure of a twelfth preferred embodiment of the present invention is shown, the specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

in this embodiment, the yoke magnetic conductive plate 30 is an annular body and is overlapped and fixed on the bottom surface of the accommodating cavity 11, the front surface of the yoke magnetic conductive plate 30 is concavely provided with an annular accommodating groove 34, and the voice coil 60 is suspended in the annular accommodating groove 34; this magnetite 40 is including interior magnetite 41 and outer magnetite 42, this interior magnetite 41 and outer magnetite 42 all coincide to be fixed on the bottom surface of holding chamber 11, this yoke formula magnetic conduction board 30 presss from both sides and locates between interior magnetite 41 and the outer magnetite 42, the front and the back of interior magnetite 41 run through and are formed with sound damping cavity 405, this sound damping cavity 405, first through-hole 12 and second through-hole 21 communicate in proper order, and the front coincide of interior magnetite 41 is fixed with tuning cloth 75, this tuning cloth 75 covers the front opening of sound damping cavity 405.

When the magnetic voice diaphragm works, the yoke type magnetic conduction plate 30, the inner magnet 41 and the outer magnet 42 form a magnetic circuit structure with strong magnetic field energy and excellent acoustic performance, magnetic energy is generated under the action of current to push the voice coil 60 to drive the vibration sound diaphragm 50 to sound, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated. The titanium support 10 can effectively prevent the leakage of magnetic field energy due to the physical characteristics of the titanium material, and the rigidity and the ductility of the support shell are enhanced, so that the frequency response brake sense and the brightness of the sound damping cavity 405 of the loudspeaker are more excellent, the tone dynamic response and the sound field transient response are better shown, and the high-fidelity scene in music is restored.

The utility model discloses a design key is: by adopting the titanium support and utilizing the physical characteristics of titanium metal, the rigidity and the analytic force of an acoustic cavity in the loudspeaker can be increased, the audio response speed of the loudspeaker can be improved, and ideal tone dynamic response and sound field transient response can be obtained. By adopting the yoke type magnetic conduction plate, the magnetic loss of the magnetic conduction material in the unit can be better restrained and controlled, the magnetic energy of the magnetic field of the loudspeaker is enhanced, a more natural, full and clear ultra-wide sound field is obtained, and high-quality sound and color are generated.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (13)

1. A novel yoke type magnetic circuit titanium unit loudspeaker is characterized in that: the device comprises a titanium support, a circuit board, a yoke type magnetic conduction plate, a magnet, a vibration voice film and a voice coil; the front surface of the titanium support is provided with an accommodating cavity, and the center of the front surface and the center of the back surface of the titanium support are penetrated to form a first through hole; the circuit board is fixed on the back of the titanium support in an overlapped mode, a second through hole is formed in the circuit board, and the second through hole is communicated with the first through hole in an opposite mode; the yoke type magnetic conduction plate and the magnet are both arranged in the accommodating cavity; the vibration sound film is fixed on the front surface of the titanium support through a vibration damping ring and covers the yoke type magnetic conduction plate and the magnet; one end of the voice coil is fixed on the inner side face of the vibration sound film, the other end of the voice coil extends into the annular accommodating groove, and the voice coil is in conduction connection with the circuit board.

2. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the back of titanium support is equipped with the sound damping cavity of the concave, this second through-hole and first through-hole communicate the both sides of sound damping cavity respectively, this holding chamber is the annular and is located the periphery of sound damping cavity, this yoke formula magnetic conduction board coincide is fixed on the bottom surface in holding chamber, this magnetite is outer magnet and coincide is fixed in the front of yoke formula magnetic conduction board, and be formed with annular accommodation groove between the inside wall of magnetite and the lateral wall of yoke formula magnetic conduction board, this voice coil loudspeaker voice coil hangs in the annular accommodation groove, and the front coincide of magnetite is fixed with outer magnetic pole piece.

3. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the back of titanium support is the concave sound damping cavity that is equipped with, this second through-hole and first through-hole communicate the both sides of sound damping cavity respectively, this holding chamber is the annular and is located the periphery of sound damping cavity, this yoke formula magnetic conduction board coincide is fixed on the bottom surface in holding chamber, this magnetite is interior magnet and the coincide is fixed in the front of yoke formula magnetic conduction board, and be formed with annular accommodation groove between the lateral wall of magnetite and the inside wall of yoke formula magnetic conduction board, this voice coil loudspeaker voice coil hangs in the annular accommodation groove, and the front coincide of magnetite is fixed with interior magnetic pole piece.

4. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is concave and is fixedly overlapped on the bottom surface of the accommodating cavity, and a third through hole is formed in the yoke type magnetic conduction plate; this magnetite is interior magnetite and coincide and fixes in yoke formula magnetic conduction board, the front and the back of magnetite run through and are formed with the sound damping cavity, and the front coincide of magnetite is fixed with interior magnetic pole piece, the front and the back of this interior magnetic pole piece run through and are formed with the fourth through-hole, this fourth through-hole, the sound damping cavity, the third through-hole, first through-hole and second through-hole communicate in proper order, and be formed with annular accommodation groove between the lateral wall of magnetite and the inside wall of yoke formula magnetic conduction board, this voice coil loudspeaker voice coil hangs in the annular accommodation groove.

5. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is fixedly overlapped on the bottom surface of the containing cavity, a concave position is concavely arranged at the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is arranged at the center of the bottom surface of the concave position, an annular containing groove is concavely arranged at the front surface of the yoke type magnetic conduction plate, and the annular containing groove is positioned at the periphery of the concave position; the magnet is an inner magnet and is positioned in the concave position, the front surface and the back surface of the magnet penetrate through to form a sound damping cavity, and the fifth through hole, the sound damping cavity, the first through hole and the second through hole are communicated in sequence; the voice coil is suspended in the annular accommodating groove.

6. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the magnet is an inner magnet and is fixedly overlapped on the bottom surface of the accommodating cavity, the front surface and the back surface of the magnet penetrate through the accommodating cavity to form a sound damping cavity, the first through hole and the second through hole are sequentially communicated, the front surface of the magnet is fixedly overlapped with the sound tuning cloth, and the sound tuning cloth covers the front opening of the sound damping cavity; the yoke type magnetic conduction plate is an annular body and is fixedly overlapped on the bottom surface of the containing cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, and the voice coil is suspended in the annular containing groove.

7. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate and the magnet are overlapped and fixed on the bottom surface of the containing cavity, the magnet is an outer magnet, the magnet is sleeved on the outer side surface of the yoke type magnetic conduction plate, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, the annular containing groove is positioned on the periphery of the sound damping cavity, and the voice coil is suspended in the annular containing groove.

8. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate is of an annular plate structure and is fixedly superposed on the bottom surface of the accommodating cavity; this magnetite is including interior magnetite and outer magnetite, this interior magnetite and the equal coincide of outer magnetite are fixed in the front of yoke formula magnetic conduction board, outer magnetite be located the periphery of interior magnetite and with be formed with first annular storage tank between the interior magnetite, and the front coincide of interior magnetite is fixed with interior magnetic pole piece, the front coincide of outer magnetite is fixed with outer magnetic pole piece, form second annular storage tank between this outer magnetic pole piece and the interior magnetic pole piece, this voice coil loudspeaker voice coil passes the second annular storage tank and stretches into in the first annular storage tank.

9. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the back of the titanium support is concavely provided with a sound damping cavity, and the second through hole and the first through hole are respectively communicated with two sides of the sound damping cavity; the yoke type magnetic conduction plate is fixed on the bottom surface of the containing cavity in an overlapped mode, an annular concave position is arranged on the front surface of the yoke type magnetic conduction plate, and the annular concave position is located on the periphery of the sound damping cavity; this magnetite is including interior magnetite and outer magnetite, this interior magnetite and the equal coincide of outer magnetite are fixed in annular concave position, outer magnetite be located the periphery of interior magnetite and with be formed with first annular storage tank between the interior magnetite, and the front coincide of interior magnetite is fixed with interior magnetic pole piece, the front coincide of outer magnetite is fixed with outer magnetic pole piece, form second annular storage tank between this outer magnetic pole piece and the interior magnetic pole piece, this voice coil loudspeaker voice coil passes second annular storage tank and stretches into in the first annular storage tank.

10. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is fixedly overlapped on the bottom surface of the containing cavity, a concave position is concavely arranged at the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is arranged at the center of the bottom surface of the concave position, an annular containing groove is concavely arranged at the front surface of the yoke type magnetic conduction plate, and the annular containing groove is positioned at the periphery of the concave position; the magnet comprises an inner magnet and an outer magnet, the inner magnet is embedded in the concave position and is fixedly overlapped with the bottom surface of the accommodating cavity, the front surface and the back surface of the inner magnet penetrate through the accommodating cavity to form a sound damping cavity, the fifth through hole, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity, and the yoke type magnetic conduction plate covers the front surface of the outer magnet; the voice coil is suspended in the annular accommodating groove.

11. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is an annular body, the center of the yoke type magnetic conduction plate is provided with a hollow cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, and the annular containing groove is positioned at the periphery of the hollow cavity; the magnet comprises an inner magnet and an outer magnet, the inner magnet is fixedly overlapped with the bottom surface of the accommodating cavity and is positioned in the hollow cavity, a sound damping cavity is formed by penetrating through the front surface and the back surface of the inner magnet, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, tuning cloth is fixedly overlapped on the front surface of the inner magnet, the tuning cloth covers a front opening of the sound damping cavity, and the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity; the voice coil is suspended in the annular accommodating groove.

12. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is fixedly overlapped on the bottom surface of the containing cavity, a concave position is concavely arranged at the center of the back surface of the yoke type magnetic conduction plate, a fifth through hole is arranged at the center of the bottom surface of the concave position, an annular containing groove is concavely arranged at the front surface of the yoke type magnetic conduction plate, and the annular containing groove is positioned at the periphery of the concave position; the magnet comprises an inner magnet and an outer magnet, the inner magnet is embedded in the concave position and is fixedly overlapped with the bottom surface of the accommodating cavity, the front surface and the back surface of the inner magnet penetrate through the accommodating cavity to form a sound damping cavity, the fifth through hole, the sound damping cavity, the first through hole and the second through hole are sequentially communicated, and the outer magnet is sleeved on the outer side wall of the yoke type magnetic conduction plate and is fixedly overlapped with the bottom surface of the accommodating cavity; the voice coil is suspended in the annular accommodating groove.

13. The new yoke-type magnetic circuit titanium unit speaker as claimed in claim 1, wherein: the yoke type magnetic conduction plate is an annular body and is fixedly overlapped on the bottom surface of the containing cavity, the front surface of the yoke type magnetic conduction plate is concavely provided with an annular containing groove, and the voice coil is suspended in the annular containing groove; the magnet comprises an inner magnet and an outer magnet, the inner magnet and the outer magnet are fixed on the bottom surface of the accommodating cavity in an overlapped mode, the yoke type magnetic conduction plate is clamped between the inner magnet and the outer magnet, a sound damping cavity is formed by penetrating through the front surface and the back surface of the inner magnet, the sound damping cavity, the first through hole and the second through hole are communicated in sequence, tuning cloth is fixed on the front surface of the inner magnet in an overlapped mode, and the front opening of the sound damping cavity is covered by the tuning cloth.

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