JP3217576U - Dual magnetic circuit, double cavity, double braking wrapper - Google Patents

Abstract

To provide a dual magnetic circuit, a double cavity, and a double braking wrapper that can perfectly embody a high-quality tone unique to a sealed cavity. The trumpet includes an outer bracket, an inner magnetic guide plate, an inner magnet ring, an outer magnet ring, a vibration sound film, and a voice coil, and the inner magnetic guide plate is provided in the outer bracket. The first sound guide hole 21 is opened in the inner magnetic guide plate, and the first brake sound-adjusting cloth 71 and the second brake sound-adjusting cloth 72 are sequentially sealed below the first sound guide hole. A first braking tone cavity 701 is formed above, a second braking tone cavity 702 is formed between the second braking tuning fabric and the first braking tuning fabric, an inner magnet ring is provided on the inner magnetic guide plate, and an outer The magnet ring is positioned around the inner magnet ring, and a voice coil acoustic cavity 301 is formed between the magnet ring and the inner magnet ring. [Selection] Figure 1

Description

  The present invention relates to the field of acoustic devices, particularly to a dual magnetic circuit, a double cavity, and a double braking wrapper.

  The speaker is also referred to as a “wrapper” and is a transducer that converts an electrical signal into a sound signal. The quality of the speaker greatly affects the sound quality. While the speaker is the most fragile device in acoustic equipment, it is the most important component for acoustic effects. There are many types of speakers, and the prices are very different. Due to the electromagnetic, piezoelectric, or electrostatic effect of audio electrical energy, the paper cone or diaphragm of the speaker vibrates and resonates (resonates) with the surrounding air to emit sound.

  At present, the internal magnetic circuit system of an existing small speaker unit is relatively thin, and there is only one magnet ring. In the existing speaker unit, there is a sealing tone cavity between the bottom of the voice coil and the magnetic circuit system. However, since there is no structure design of the double tone cavity and articulation design of double braking, It is not possible to bring out high-quality sounds. Therefore, there is a need to improve current speakers.

  In view of this, the present invention aims at a defect existing in the prior art, and its main purpose is a dual magnetic circuit that can effectively solve the problem that the internal magnetic circuit system of the conventional speaker is thin and the tone is not ideal. The object is to provide a double cavity and double braking wrapper.

  In order to achieve the above object, the present invention takes the following solutions.

  The dual magnetic circuit / double cavity / double brake wrapper includes an outer bracket, an inner magnetic guide plate, an inner magnet ring, an outer magnet ring, a vibrating sound film, and a voice coil. A first sound guide hole is provided in the outer bracket, the first magnetic guide plate is opened in the inner magnetic guide plate, and the first and second brake sound-adjusting cloths are sequentially sealed below the first sound guide hole. A first braking tone cavity is formed above the braking tuning fabric, a second braking tone cavity is formed between the second braking tuning fabric and the first braking tuning fabric, and the inner magnet ring is provided on the inner magnetic guide plate. The outer magnet ring is positioned around the inner magnet ring and forms a voice coil acoustic cavity with the inner magnet ring. Covering the upper end opening of Tsu bets, vibration sound edge downward vibration Makuen acoustic cavity of the film is formed, it enters the voice coil acoustic cavity together with the voice coil is fixed to the bottom surface of the vibration sound film.

  Preferably, a concave cavity is provided in the center of the bottom surface of the inner magnetic guide plate, a boss is provided in the center of the surface of the corresponding inner magnetic guide plate, and the first sound guide hole is provided in the boss and communicates with the concave cavity. The inner magnet ring is fitted into the concave cavity, and the first brake sound-adjusting cloth is laminated on the bottom surface of the inner magnet ring and positioned in the concave cavity.

  Preferably, a second sound guide hole is opened at the bottom of the outer bracket, and the second braking sound-adjusting cloth covers the second sound guide hole.

  Preferably, the outer magnet ring is laminated on the peripheral edge of the surface of the inner magnetic guide plate and positioned in the outer bracket, and a magnetic pole plate is laminated on the outer magnet ring.

  Preferably, a circuit board is provided at the bottom of the outer bracket, and the voice coil is electrically connected to the circuit board.

  Preferably, a concave cavity is provided in the center of the bottom surface of the inner magnetic guide plate, a boss is provided in the center of the surface of the corresponding inner magnetic guide plate, and the first sound guide hole is provided in the boss and communicates with the concave cavity. The inner magnet ring is fitted outside the boss, the inner magnetic pole plate is laminated on the inner magnet ring, the first brake sound-adjusting cloth is provided in the concave cavity, and the outer magnet ring is attached to the surface of the inner magnetic guide plate. The outer magnetic pole plate is laminated on the outer periphery and positioned in the outer bracket, and the outer magnetic pole plate is laminated on the outer magnet ring.

  Preferably, a cylindrical body is formed extending downward from the center of the bottom of the inner magnetic guide plate, the inner magnet ring is fitted to the outside of the cylinder and located in the outer bracket, and the outer magnet ring is Mated outside the bracket.

  Preferably, the outer end of the cylindrical body extends downward from the bottom of the outer bracket, a braking lid is attached to the outer end of the cylindrical body, the first braking sound-adjusting cloth is provided in the cylindrical body, and the second A brake sound-adjusting cloth is laminated on the bottom of the brake lid and covers the bottom opening of the cylinder.

  The present invention has special advantages and advantageous effects over the prior art. Specifically, as can be seen from the above solution, in the present invention, the installation of the inner magnet ring and the outer magnet ring makes a novel design of the dual magnetic circuit system, and the strong magnetic force problem of the conventional magnetic circuit system inside the speaker. Can be changed and improved, and by installing a novel double-tone cavity structure design and double-braking articulation design, it is possible to perfectly embody the high-quality sound unique to the sealed cavity.

  To make the structural features and effects of the present invention clearer, the present invention will be described in detail below in combination with the drawings and specific embodiments.

1 is a cross-sectional view of a first preferred embodiment of the present invention. It is sectional drawing of 2nd preferable embodiment of this invention. It is sectional drawing of 3rd preferable embodiment of this invention.

  FIG. 1 shows a specific structure of a first preferred embodiment of the present invention. An outer bracket 10, an inner magnetic guide plate 20, an inner magnet ring 30, an outer magnet ring 40, a vibration sound film 50, and a voice coil 60 are shown. Prepare.

  The inner magnetic guide plate 20 is provided in the outer bracket 10, and a first sound guide hole 21 is opened in the inner magnetic guide plate 20. The second braking tone cloth 72 is sealed, the first braking tone cavity 701 is formed above the first braking tone cloth 71, and the second braking tone is interposed between the second braking tone cloth 72 and the first braking tone cloth 71. A cavity 702 is formed. In the present embodiment, a concave cavity 22 is provided in the center of the bottom surface of the inner magnetic guide plate 20, a boss 23 is provided in the center of the surface of the corresponding inner magnetic guide plate 20, and the first sound guide hole 21 is formed in the boss 23. It is provided and communicates with the concave cavity 22.

  The inner magnet ring 30 is provided on the inner magnetic guide plate 20, the outer magnet ring 40 is positioned around the inner magnet ring 30, and a voice coil acoustic cavity 301 is formed with the inner magnet ring 30. In the present embodiment, the inner magnet ring 30 is fitted into the concave cavity 22, and the first brake sound-adjusting cloth 71 is laminated on the bottom surface of the magnet ring 30 and positioned in the concave cavity 22. The outer magnet ring 40 is laminated on the surface periphery of the inner magnetic guide plate 20 and positioned in the outer bracket 10, and a magnetic pole plate 73 is laminated on the outer magnet ring 40.

  The vibration sound film 50 covers the upper end opening of the outer bracket 10, and a vibration film edge acoustic cavity 501 is formed below the edge of the vibration sound film 50.

  The voice coil 60 is fixed to the bottom surface of the vibration sound film 50 and enters the voice coil acoustic cavity 301.

  Further, the second sound guide hole 11 is opened at the bottom of the outer bracket 10, and the second brake sound-adjusting cloth 72 covers the second sound guide hole 11. A circuit board 74 is provided at the bottom of the outer bracket 10, and the voice coil 60 is electrically connected to the circuit board 74.

  Details of the operation principle of the present embodiment are as follows.

  First, in this embodiment, a novel double magnet ring structure design is adopted. The outer magnet ring 40 and the inner magnet ring 30 are respectively disposed in the cavities of the inner magnetic guide plate 20 on the outer side of the voice coil 60 and on the inner side of the voice coil 60, and the voice coil 60 is connected to the outer magnet ring 40 and the inner magnet ring 30. Surrounded by the magnetic pole plate 73 and the inner magnetic guide plate 20, the voice coil 60 obtains the most primitive and most direct power that is several times stronger than ordinary trumpet magnetic energy drive, and the voice coil 60 and the vibrating sound film 50. Saturates the vibrating arc of the vibrating sound film 50 more naturally in the process of converting magnetic energy into sound energy. Next, a novel dual magnetic circuit structure design is adopted in the present embodiment, and the voice coil 60 is circulated by magnet rings inside and outside the voice coil 60, and in the magnetic gap space on both the inside and outside of the voice coil 60. As a result, a stable circulatory concentrated magnetic field is formed. Thereby, the amount of necessary magnetic energy supplied from the voice coil 60 to the vibration sound film 50 is more substantial and stable, the vibration frequency of the vibration sound film 50 at the time of pronunciation vibration is more thorough, Sound quality reproduction in low frequency band and extremely high frequency band is obtained. Furthermore, in this embodiment, a novel double tone cavity structure design is adopted, and an independent acoustic cavity is formed between the outer bracket 10 and the inner magnetic guide plate 20. The sound guide hole circulates the air pressure in the ball top acoustic cavity, the diaphragm edge acoustic cavity, and the voice coil central acoustic cavity to communicate with each other and supplement, thereby generating a new sound field circuit. In sound quality reproduction, the sound field circuit in the double-braking tone cavity can effectively suppress the bad split motion during the sound vibration of the sound film, and the distortion phenomenon that occurs when the sound film reproduces the audio signal due to the split motion. Solve and improve the sound quality level with super high fidelity. In addition, in this embodiment, by adopting a novel double braking articulation design, it is possible to make two adjustments to the acoustic resistance in the acoustic cavity, and in the acoustic adjustment for sound band reproduction. It is delicate on the whole surface, and the mutual balance between the extremely low frequency / low frequency / intermediate frequency / high frequency of the sound and the extremely high frequency becomes the best state. Under the same caliber trumpet condition, the sound field reproduction of the sound quality is wider, the timbre expression is more delicate, and the entire surface can be obtained lossless and high-quality music reproduction.

  FIG. 2 shows a specific structure of the second preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the first preferred embodiment, but the distinction is as follows.

  In the present embodiment, a concave cavity 22 is provided in the center of the bottom surface of the inner magnetic guide plate 20, a boss 23 is provided in the center of the surface of the corresponding inner magnetic guide plate 20, and the first sound guide hole 21 is formed in the boss 23. The inner magnet ring 30 is fitted to the outside of the boss 23, the inner magnetic pole plate 75 is laminated on the inner magnet ring 30, and the first brake sound-adjusting cloth 71 is placed in the concave cavity 22. The outer magnet ring 40 is laminated on the peripheral edge of the inner magnetic guide plate 20 and positioned in the outer bracket 10, and the outer magnetic pole plate 76 is laminated on the outer magnet ring 40.

  The details of the operation principle of this embodiment are as follows.

  First, in this embodiment, a novel double magnet ring structure design is adopted. The outer magnet ring 40 and the inner magnet ring 30 are respectively arranged on the outer side and the inner side of the voice coil 60, the voice coil 60 is surrounded by the outer magnet ring 40 and the inner magnet ring 30, and the outer magnetic pole plate 76 and the inner magnetic guide plate. 20, the voice coil 60 obtains the most primitive and most direct power twice stronger than ordinary trumpet magnetic energy drive, and the voice coil 60 and the vibrating sound film 50 convert magnetic energy into sound energy. The vibration arc of the vibration sound film 50 is saturated more naturally. Next, in this embodiment, by adopting a novel dual magnetic pole plate structure design, the magnetic energy in the magnetic gap transmitted quickly and effectively reaches the voice coil 60, and the voice coil diaphragm system is It becomes easier to capture each delicate dynamic moment from the audio signal, the system response of the voice coil diaphragm is more sensitive and quick, the high sensitivity of reproduction of the audio signal response of the wrapper is achieved, and the audio signal High accuracy to reproduce instantaneous changes is achieved. Furthermore, a novel dual magnetic circuit structure design is adopted in the present embodiment, and the voice coil 60 is circulated by the magnet ring inside the voice coil 60 and outside the voice coil 60. In the magnetic gap space on both the inside and outside of the voice coil 60, A stable wraparound magnetic flux magnetic field is formed. Thereby, the amount of necessary magnetic energy supplied from the voice coil 60 to the vibration sound film 50 is more substantial and stable, the vibration frequency of the vibration sound film 50 at the time of pronunciation vibration is more thorough, Sound quality reproduction in low frequency band and extremely high frequency band is obtained. Furthermore, in this embodiment, a novel double tone cavity structure design is adopted, and an independent acoustic cavity is formed between the outer bracket 10 and the inner magnetic guide plate 20. The sound guide hole circulates the air pressure in the ball top acoustic cavity, the diaphragm edge acoustic cavity, and the voice coil central acoustic cavity to communicate with each other and supplement, thereby generating a new sound field circuit. In sound quality reproduction, the sound field circuit in the double-tone cavity can effectively suppress the bad split motion during sound film vibration, and solve the distortion phenomenon that occurs when the sound film reproduces the audio signal due to the split motion. Or improve and get a sound quality level with super high fidelity. In addition, in this embodiment, by adopting a novel double braking articulation design, it is possible to make two adjustments to the acoustic resistance in the acoustic cavity, and in the acoustic adjustment for sound band reproduction. It is delicate on the whole surface, and the mutual balance between the extremely low frequency / low frequency / intermediate frequency / high frequency of the sound and the extremely high frequency becomes the best state. Under the same caliber trumpet condition, the sound field reproduction of the sound quality is wider, the timbre expression is more delicate, and the entire surface can be obtained lossless and high-quality music reproduction.

  FIG. 3 shows a specific structure of the third preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the first preferred embodiment, and the distinction is as follows.

  In the present embodiment, a cylindrical body 24 is formed extending downward from the center of the bottom of the inner magnetic guide plate 20, and the inner magnet ring 30 is fitted outside the cylindrical body 24 and positioned in the outer bracket 10. Then, the outer magnet ring 40 is fitted to the outside of the outer bracket 10. The cylinder 24 extends downward from the bottom of the outer bracket 10 along the lower end thereof, and a brake lid 77 is attached to the outer end of the cylinder 24. The second brake sound-adjusting cloth 72 is laminated on the bottom of the brake lid 77 and covers the bottom opening of the cylinder 24.

  Details of the operation principle of the present embodiment are as follows.

  First, in this embodiment, a novel double magnet ring structure design is adopted. The outer magnet ring 40 and the inner magnet ring 30 are respectively disposed in the cavities of the inner magnetic guide plate 20 on the outer side of the voice coil 60 and on the inner side of the voice coil 60, and the voice coil 60 is connected to the outer magnet ring 40 and the inner magnet ring 30. Surrounded by the outer bracket 10 and the inner magnetic guide plate 20, the voice coil 60 obtains the most primitive and most direct power that is several times stronger than ordinary trumpet magnetic energy drive, and the voice coil 60 and the vibrating sound film 50. Saturates the vibrating arc of the vibrating sound film 50 more naturally in the process of converting magnetic energy into sound energy. Next, a novel dual magnetic circuit structure design is adopted in the present embodiment, and the voice coil 60 is circulated by magnet rings inside and outside the voice coil 60, and in the magnetic gap space on both the inside and outside of the voice coil 60. As a result, a stable circulatory concentrated magnetic field is formed. Thereby, the amount of necessary magnetic energy supplied from the voice coil 60 to the vibration sound film 50 is more substantial and stable, the vibration frequency of the vibration sound film 50 at the time of pronunciation vibration is more thorough, Sound quality reproduction in low frequency band and extremely high frequency band is obtained. Furthermore, in this embodiment, a novel double tone cavity structure design is adopted, and an independent acoustic cavity is formed between the outer bracket 10 and the inner magnetic guide plate 20. The sound guide hole circulates the air pressure in the ball top acoustic cavity, the diaphragm edge acoustic cavity, and the voice coil central acoustic cavity to communicate with each other and supplement, thereby generating a new sound field circuit. In sound quality reproduction, the sound field circuit in the double-tone cavity can effectively suppress the bad split motion during sound film vibration, and solve the distortion phenomenon that occurs when the sound film reproduces the audio signal due to the split motion. Or improve and get a sound quality level with super high fidelity. In addition, in this embodiment, by adopting a novel double braking articulation design, it is possible to make two adjustments to the acoustic resistance in the acoustic cavity, and in the acoustic adjustment for sound band reproduction. It is delicate on the whole surface, and the mutual balance between the extremely low frequency / low frequency / intermediate frequency / high frequency of the sound and the extremely high frequency becomes the best state. Under the same caliber trumpet condition, the sound field reproduction of the sound quality is wider, the timbre expression is more delicate, and the entire surface can be obtained lossless and high-quality music reproduction.

  The emphasis of the design of the present invention is that, in the present invention, the installation of the inner magnet ring and the outer magnet ring forms a novel design of the dual magnetic circuit system to solve the problem of the strong magnetic force of the magnetic circuit system in the conventional speaker. In addition to being able to be changed and improved, the installation of a novel double-tone cavity structure design and double-braking articulation design makes it possible to perfectly embody the high-quality sound unique to the sealed cavity.

  The technical principle of the present invention has been described above by combining specific embodiments. These descriptions are used to interpret the principles of the present invention, but cannot be construed as limiting the protection scope of the present invention in any way. Based on this interpretation, one skilled in the art can conceive other specific embodiments of the present invention without labor deserving of inventive step. These forms are all included in the protection scope of the present invention.

10, outer bracket 11, second sound guide hole 20, inner magnetic guide plate 21, first sound guide hole 22, concave cavity 23, boss 24, cylinder 30, inner magnet ring 301, voice coil acoustic cavity 40, outer magnet Ring 50, vibrating sound film 501, vibrating membrane edge acoustic cavity 60, voice coil 71, first braking tuning fabric 72, second braking tuning fabric 73, magnetic pole plate 74, circuit board 75, inner magnetic pole plate 76, outer magnetic pole plate 77 , Braking lid 701, first braking tone cavity 702, second braking tone cavity

Claims (8)

An outer bracket, an inner magnetic guide plate, an inner magnet ring, an outer magnet ring, a vibrating sound film, and a voice coil;
The inner magnetic guide plate is provided in the outer bracket, a first sound guide hole is opened in the inner magnetic guide plate, and a first brake sound-adjusting cloth and a second brake sound-adjusting cloth are sequentially provided below the first sound guide hole. The first braking tone cavity is formed above the first braking tuning fabric, the second braking tone cavity is formed between the second braking tuning fabric and the first braking tuning fabric, and the inner magnet ring is Provided on the inner magnetic guide plate, the outer magnet ring is located around the inner magnet ring and forms a voice coil acoustic cavity with the inner magnet ring, the vibrating sound film covers the upper end opening of the outer bracket, A diaphragm edge acoustic cavity is formed below the edge of the vibration sound film, the voice coil is fixed to the bottom surface of the vibration sound film, and the voice coil acoustic cavity is formed. Dual magnetic circuit double cavity dual braking wrapper, characterized in that entering the inside.   A concave cavity is provided in the center of the bottom surface of the inner magnetic guide plate, a boss is provided in the center of the surface of the corresponding inner magnetic guide plate, the first sound guide hole is provided in the boss, and communicates with the concave cavity. 2. The dual magnetic circuit / double cavity according to claim 1, wherein the magnet ring is fitted in the concave cavity, and the first damping acoustic fabric is laminated on the bottom surface of the inner magnet ring and is located in the concave cavity. 3. -Double braking wrapper.   2. The dual magnetic circuit, the double cavity, and the double braking according to claim 1, wherein a second sound guide hole is opened at a bottom portion of the outer bracket, and the second brake sound-adjusting cloth covers the second sound guide hole. rap.   2. The dual magnetic circuit according to claim 1, wherein the outer magnet ring is laminated on the outer peripheral edge of the inner magnetic guide plate and positioned in the outer bracket, and a magnetic pole plate is laminated on the outer magnet ring. 3. Double cavity and double brake wrapper.   2. The dual magnetic circuit / double cavity / double brake wrapper according to claim 1, wherein a circuit board is provided at the bottom of the outer bracket, and the voice coil is electrically connected to the circuit board.   A concave cavity is provided in the center of the bottom surface of the inner magnetic guide plate, a boss is provided in the center of the surface of the corresponding inner magnetic guide plate, the first sound guide hole is provided in the boss, and communicates with the concave cavity. The magnet ring is fitted to the outside of the boss, the inner magnetic pole plate is laminated on the inner magnet ring, the first braking sound-adjusting cloth is provided in the concave cavity, and the outer magnet ring is laminated on the peripheral edge of the inner magnetic guide plate. The dual magnetic circuit / double cavity / double brake wrapper according to claim 1, wherein the dual magnetic circuit / double cavity / double brake wrapper is disposed in the outer bracket and an outer magnetic pole plate is laminated on the outer magnet ring.   A cylinder is formed extending downward from the center of the bottom of the inner magnetic guide plate, the inner magnet ring is fitted to the outside of the cylinder and located in the outer bracket, and the outer magnet ring is located outside the outer bracket. The dual magnetic circuit / double cavity / double brake wrapper according to claim 1, wherein   The outer end of the cylindrical body extends from the bottom of the outer bracket along the lower side, a braking lid is attached to the outer end of the cylindrical body, the first braking tuning cloth is provided in the cylindrical body, and the second braking tuning cloth The dual magnetic circuit / double cavity / double brake wrapper according to claim 7, wherein the dual magnetic circuit, the double cavity, and the double brake wrapper are disposed on the bottom of the brake lid and cover the bottom opening of the cylinder.