WO2022116255A1 - 一种同轴喇叭 - Google Patents

一种同轴喇叭 Download PDF

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Publication number
WO2022116255A1
WO2022116255A1 PCT/CN2020/135776 CN2020135776W WO2022116255A1 WO 2022116255 A1 WO2022116255 A1 WO 2022116255A1 CN 2020135776 W CN2020135776 W CN 2020135776W WO 2022116255 A1 WO2022116255 A1 WO 2022116255A1
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WO
WIPO (PCT)
Prior art keywords
conductive module
voice coil
woofer
pad
tweeter
Prior art date
Application number
PCT/CN2020/135776
Other languages
English (en)
French (fr)
Inventor
许炜东
陈辉
Original Assignee
东莞市富新电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞市富新电子有限公司 filed Critical 东莞市富新电子有限公司
Priority to US17/610,692 priority Critical patent/US20230292037A1/en
Publication of WO2022116255A1 publication Critical patent/WO2022116255A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider

Definitions

  • the invention relates to the field of speakers, in particular to a coaxial speaker.
  • Coaxial speakers are coaxial speakers, that is, there are tweeters in addition to mid-bass speakers on the same axis, which are responsible for reproducing high-pitched and mid-bass respectively.
  • the advantage is that it can greatly improve the bandwidth of a single speaker.
  • the common structure of coaxial speakers is: superimposing the tweeter in front of the woofer, or superimposing the woofer in front of the tweeter to form a stacked Arhat structure, such as the coaxial speaker and the speaker with the application number of 201820174530.1, It discloses a coaxial horn, including a mid-bass horn, a mid-bass sonic tube for propagating sound waves of the mid-bass horn, a tweeter arranged in the inner cavity of the mid-bass sonic tube, a high-pitched horn for supporting the tweeter, The support structure connecting the inner walls of the mid-bass sonic tubes; the long axis of the tweeter is collinear with the long axis of the mid-bass horn.
  • a mid-bass sonic tube is arranged in front of the mid-bass horn to transmit the sound waves emitted by the mid-bass horn.
  • the tweeter thus achieving the effect of single-point sound. Due to its large size and easy wiring, this type of speaker is suitable for large-sized speaker equipment such as car speakers. However, for small-sized devices such as earphones, due to the small size of the woofer and the tweeter, it is difficult to use conventional wiring methods to connect the two during the connection and assembly process.
  • the present invention provides a coaxial speaker, where the tweeter and the woofer are arranged on the same axis, and the tweeter and the woofer replay their respective frequency bands, which can greatly improve the frequency bandwidth of the coaxial speaker.
  • the tweeter and woofer are connected in a way that can achieve mass production for small-sized devices.
  • a coaxial speaker includes a woofer and a tweeter, the tweeter is located on the upper side of the woofer and is on the same axis as the woofer, the woofer includes a first protective cover and a circuit board, and the The first protective cover is provided with a first conductive module, the lower end of the first conductive module is connected to the circuit board, the tweeter includes a first bracket and a first voice coil, and a first bracket is provided on the first bracket.
  • Two conductive modules the wiring of the first voice coil is connected to the upper end of the second conductive module, and the upper end of the first conductive module is connected to the lower end of the second conductive module.
  • the woofer further includes a second bracket, a first U iron, a first magnet, a second washer, a second voice coil, and a first diaphragm, and a third conductive module is arranged on the second bracket, The wiring of the second voice coil is connected to the upper end of the third conductive module, and the lower end of the third conductive module is connected to the circuit board.
  • the third conductive module is integrally connected with the second bracket, the upper and lower ends of the third conductive module are respectively connected with a first pad and a second pad, and the wiring of the second voice coil Soldered on the first pad, and the second pad is welded with the circuit board.
  • the tweeter further includes a second U iron, a tuning net, a second magnet, a first washer, a second cover, and a second diaphragm.
  • the second conductive module is integrally connected with the first bracket, and the upper and lower ends of the second conductive module are respectively connected with a third pad and a fourth pad, and the wiring of the first voice coil soldered on the third pad.
  • the first conductive module is integrally connected with the first protective cover, a fifth pad is connected to the upper end of the first conductive module, and the fourth pad is welded to the fifth pad.
  • the first conductive module is a flexible circuit board
  • an escape groove is provided on the outer side of the first protective cover
  • the flexible circuit board is attached to the inner side of the escape groove
  • the fourth pad is connected to the flexible circuit board. Solder the top of the circuit board.
  • the first protective cover is integrally connected with the first bracket, the first conductive module is integrally connected with the second conductive module, and the first conductive module is integrally connected with the second conductive module.
  • a fourth conductive module is formed, the upper end of the fourth conductive module is connected with a sixth pad, the wiring of the first voice coil is welded on the sixth pad, and the lower end of the fourth conductive module is connected to the sixth pad. Soldering the circuit board.
  • the tweeter and the woofer are arranged on the same axis, and the tweeter and the woofer replay their respective frequency bands, which can greatly improve the frequency bandwidth of the coaxial speaker, so that one speaker can Fully meet the frequency reception range of the human ear from 20 to 20 kHz;
  • the coaxial speaker of the present invention is suitable for small-sized speaker equipment, such as earphones and other equipment.
  • the tweeter and the woofer are designed into a weldable structure.
  • the electrical connection can solve the problem of difficulty in wiring due to the small size of the speaker in the prior art.
  • FIG. 1 is a perspective structural view of a coaxial horn in Embodiment 1.
  • FIG. 1 is a perspective structural view of a coaxial horn in Embodiment 1.
  • FIG. 2 is a bottom view of the coaxial horn in Embodiment 1.
  • FIG. 2 is a bottom view of the coaxial horn in Embodiment 1.
  • FIG. 3 is a cross-sectional view of the plane A-A in FIG. 2 .
  • FIG. 4 is an exploded view of the coaxial horn in Embodiment 1.
  • FIG. 4 is an exploded view of the coaxial horn in Embodiment 1.
  • FIG. 5 is a schematic structural diagram of a first protective cover and a first conductive module in Embodiment 1.
  • FIG. 5 is a schematic structural diagram of a first protective cover and a first conductive module in Embodiment 1.
  • FIG. 6 is a schematic structural diagram of the first support and the second conductive module in Embodiment 1.
  • FIG. 6 is a schematic structural diagram of the first support and the second conductive module in Embodiment 1.
  • FIG. 7 is a schematic structural diagram of the second bracket and the third conductive module in Embodiment 1.
  • FIG. 7 is a schematic structural diagram of the second bracket and the third conductive module in Embodiment 1.
  • FIG. 8 is a schematic structural diagram of a first conductive module, a second conductive module, a third conductive module, a circuit board, a second voice coil, and a first voice coil in Embodiment 1.
  • FIG. 8 is a schematic structural diagram of a first conductive module, a second conductive module, a third conductive module, a circuit board, a second voice coil, and a first voice coil in Embodiment 1.
  • FIG. 9 is an exploded view of the coaxial horn in Embodiment 2.
  • FIG. 9 is an exploded view of the coaxial horn in Embodiment 2.
  • FIG. 10 is a schematic structural diagram of a first protective cover, a first bracket, and a fourth conductive module in Embodiment 2.
  • FIG. 10 is a schematic structural diagram of a first protective cover, a first bracket, and a fourth conductive module in Embodiment 2.
  • FIG. 11 is a schematic structural diagram of a third conductive module, a fourth conductive module, a circuit board, a second voice coil, and a first voice coil in Embodiment 2.
  • FIG. 11 is a schematic structural diagram of a third conductive module, a fourth conductive module, a circuit board, a second voice coil, and a first voice coil in Embodiment 2.
  • FIG. 12 is a schematic structural diagram of the first protective cover and the first conductive module in the third embodiment.
  • FIG. 13 is a frequency response curve diagram of Example 1 and Comparative Example 1.
  • Reference numerals are: woofer 1, first cover 11, escape groove 111, circuit board 12, second bracket 13, first U iron 14, first magnet 15, first washer 16, second voice coil 17 , the first diaphragm 18, the tweeter 2, the first bracket 21, the first voice coil 22, the second U iron 23, the tuning net 24, the second magnet 25, the first washer 26, the second cover 27, The second diaphragm 28, the first conductive module 3, the fifth pad 31, the second conductive module 4, the third pad 41, the fourth pad 42, the third conductive module 5, the first pad 51, the second pad The pad 52 , the fourth conductive module 6 , and the sixth pad 61 .
  • a coaxial speaker including a woofer 1 and a tweeter 2, the tweeter 2 is located on the upper side of the woofer 1 and is on the same axis as the woofer 1, and the dotted line part in Figure 4 is The axis, the woofer 1 includes a first cover 11, a circuit board 12, a second bracket 13, a first U iron 14, a first magnet 15, a first washer 16, a second voice coil 17, and a first diaphragm 18 , the circuit board 12 is fixed on the bottom of the second bracket 13, the first U-iron 14 is fixed on the inner side of the second bracket 13, the cross-section of the first U-iron 14 is a U-shaped structure, and an accommodating groove is formed on the inner side.
  • a washer 16 is located in the middle of the accommodating groove of the first U iron 14, and the second voice coil 17 is sleeved on the outside of the first magnet 15 and the first washer 16, and the upper end of the second voice coil 17 is connected to the first diaphragm
  • the woofer 1 is responsible for reproducing mid-bass, so the first diaphragm 18 requires a small vibration frequency and a large vibration amplitude, so the thickness of the first diaphragm 18 is large and the diameter is large.
  • the second voice coil 17 When the second voice coil 17 is connected After entering the audio current, the second voice coil 17 generates an alternating magnetic field under the action of the current, and the first magnet 15 also generates a constant magnetic field with the same magnitude and direction.
  • the direction changes continuously with the change of the audio current, so the interaction of the two magnetic fields makes the second voice coil 17 move perpendicular to the current direction in the second voice coil 17, because the second voice coil 17 is connected with the first diaphragm 18 , thereby driving the first diaphragm 18 to vibrate, and the first diaphragm 18 causes the air to vibrate to emit a low-frequency sound signal.
  • a third conductive module 5 is provided on the second bracket 13, and the third conductive module 5 is a metal conductive sheet.
  • the metal conductive sheet is first placed in the mold, and after injection molding, the metal conductive sheet is buried. into the second bracket 13, that is, the third conductive module 5 and the second bracket 13 are integrally connected by injection molding, and the upper and lower ends of the third conductive module 5 are respectively connected with first pads 51 after being stamped and formed during the manufacturing and molding process.
  • the second pad 52, the wiring of the second voice coil 17 is welded on the first pad 51, and the second pad 52 is welded with the circuit board 12.
  • the tweeter 2 includes a first bracket 21, a first voice coil 22, a second U iron 23, a tuning net 24, a second magnet 25, a second washer 26, a second cover 27, a second diaphragm 28,
  • the second U iron 23 is fixed on the inner side of the second bracket 13 .
  • the cross section of the second U iron 23 is a U-shaped structure, and an accommodating slot is formed on the inner side.
  • the second magnet 25 and the second washer 26 are located in the accommodation of the second U iron 23 .
  • the first voice coil 22 is sleeved on the outside of the second magnet 25 and the second washer 26, the upper end of the first voice coil 22 is connected to the bottom of the second diaphragm 28, and the tweeter 2 is responsible for reproducing high notes.
  • the second diaphragm 28 is required to have a large vibration frequency and a small vibration amplitude, so the thickness of the second diaphragm 28 is small and the diameter is small.
  • An alternating magnetic field is generated, and the second magnet 25 also generates a constant magnetic field with the same size and direction. Since the size and direction of the magnetic field generated by the first voice coil 22 change continuously with the change of the audio current, so the two magnetic fields The interaction causes the first voice coil 22 to move perpendicular to the direction of the current in the first voice coil 22. Since the first voice coil 22 is connected to the second diaphragm 28, the second diaphragm 28 is driven to vibrate, and the second diaphragm 28 vibrates. The diaphragm 28 causes the vibration of the air to emit a high frequency sound signal.
  • the second conductive module 4 is a metal conductive sheet.
  • the metal conductive sheet is first placed in the mold. After injection molding, the metal conductive sheet is embedded in the first bracket 21, that is, the second conductive module 4. It is integrally connected with the first bracket 21 by injection molding, and the second conductive module 4 is stamped and formed in the manufacturing process. Soldered on the third pad 41 .
  • a first conductive module 3 is provided on the first protective cover 11, and the first conductive module 3 is a metal conductive sheet. Placed in the mold, after injection molding, the first conductive module 3 and the first protective cover 11 are integrally connected by injection molding. In addition, the upper end of the first conductive module 3 is also formed with a fifth pad 31 after being bent.
  • the disk 42 is welded to the fifth pad 31 , the lower end of the first conductive module 3 is connected to the circuit board 12 , the first bracket 21 is provided with a second conductive module 4 , and the wiring of the first voice coil 22 is connected to the upper end of the second conductive module 4 , the upper end of the first conductive module 3 is connected to the lower end of the second conductive module 4 .
  • the above scheme designs the tweeter 2 and the woofer 1 into a weldable structure, and realizes the electrical connection between the tweeter 2 and the woofer 1 by welding, which can solve the problem of difficulty in wiring due to the small size of the speakers in the prior art. problem to achieve mass production.
  • Test The performance comparison test was performed on the coaxial horn of Example 1 and the ordinary woofer of Comparative Example 1. The test results are shown in Figure 13. It is obvious from the frequency response curve in Figure 13 that the coaxial horn of Example 1 It can be improved by more than 10db at high frequency, and the effective bandwidth extends to 30kHz, which shows that the coaxial speaker of the present application can obviously improve the problem of poor high-frequency signal of ordinary woofers.
  • a coaxial speaker includes a woofer 1 and a tweeter 2.
  • the tweeter 2 is located on the upper side of the woofer 1 and is on the same axis as the woofer 1.
  • the dotted line in Figure 4 is The axis, the woofer 1 includes a first cover 11, a circuit board 12, a second bracket 13, a first U iron 14, a first magnet 15, a first washer 16, a second voice coil 17, and a first diaphragm 18
  • the circuit board 12 is fixed on the bottom of the second bracket 13
  • the first U-iron 14 is fixed on the inner side of the second bracket 13
  • the cross-section of the first U-iron 14 is a U-shaped structure, and an accommodating groove is formed on the inner side.
  • a washer 16 is located in the middle of the accommodating groove of the first U iron 14, and the second voice coil 17 is sleeved on the outside of the first magnet 15 and the first washer 16, and the upper end of the second voice coil 17 is connected to the first diaphragm
  • the woofer 1 is responsible for reproducing mid-bass, so the first diaphragm 18 requires a small vibration frequency and a large vibration amplitude, so the thickness of the first diaphragm 18 is large and the diameter is large.
  • the second voice coil 17 When the second voice coil 17 is connected After entering the audio current, the second voice coil 17 generates an alternating magnetic field under the action of the current, and the first magnet 15 also generates a constant magnetic field with the same magnitude and direction.
  • the direction changes continuously with the change of the audio current, so the interaction of the two magnetic fields makes the second voice coil 17 move perpendicular to the current direction in the second voice coil 17, because the second voice coil 17 is connected with the first diaphragm 18 , thereby driving the first diaphragm 18 to vibrate, and the first diaphragm 18 causes the air to vibrate to emit a low-frequency sound signal.
  • a third conductive module 5 is arranged on the second bracket 13, and the third conductive module 5 is a metal conductive sheet.
  • the metal conductive sheet is first placed in the mold, and after injection molding, the metal conductive sheet is buried. into the second bracket 13, that is, the third conductive module 5 and the second bracket 13 are integrally connected by injection molding, and the upper and lower ends of the third conductive module 5 are respectively connected with first pads 51 after being stamped and formed during the manufacturing and molding process.
  • the second pad 52, the wiring of the second voice coil 17 is welded on the first pad 51, and the second pad 52 is welded with the circuit board 12.
  • the tweeter 2 includes a first bracket 21, a first voice coil 22, a second U iron 23, a tuning net 24, a second magnet 25, a second washer 26, a second cover 27, a second diaphragm 28,
  • the second U iron 23 is fixed on the inner side of the second bracket 13 .
  • the cross section of the second U iron 23 is a U-shaped structure, and an accommodating slot is formed on the inner side.
  • the second magnet 25 and the second washer 26 are located in the accommodation of the second U iron 23 .
  • the first voice coil 22 is sleeved on the outside of the second magnet 25 and the second washer 26, the upper end of the first voice coil 22 is connected to the bottom of the second diaphragm 28, and the tweeter 2 is responsible for reproducing high notes.
  • the second diaphragm 28 is required to have a large vibration frequency and a small vibration amplitude, so the thickness of the second diaphragm 28 is small and the diameter is small.
  • An alternating magnetic field is generated, and the second magnet 25 also generates a constant magnetic field with the same size and direction. Since the size and direction of the magnetic field generated by the first voice coil 22 change continuously with the change of the audio current, so the two magnetic fields The interaction causes the first voice coil 22 to move perpendicular to the current direction in the first voice coil 22. Since the first voice coil 22 is connected to the second diaphragm 28, the second diaphragm 28 is driven to vibrate, and the second diaphragm 28 vibrates. The diaphragm 28 causes the vibration of the air to emit a high frequency sound signal.
  • the first protective cover 11 and the first bracket 21 are integrally formed and connected. In this embodiment, the use of the first conductive module 3 and the second conductive module 4 as shown in Embodiment 1 is eliminated.
  • a protective cover 11 and the first bracket 21 are provided with a fourth conductive module 6 .
  • the fourth conductive module 6 is a metal conductive sheet, which is embedded in the inside of the first protective cover 11 and the first bracket 21 by injection molding, and the fourth conductive module 6 is a metal conductive sheet.
  • the upper end of the four conductive modules 6 is connected with a sixth pad 61 , the wiring of the first voice coil 22 is welded on the sixth pad 61 , the lower end of the fourth conductive module 6 is welded with the circuit board 12 , and the connection between the woofer 1 and the tweeter 2 is The electrical connection is realized through the fourth conductive module 6 .
  • a coaxial horn comprising a woofer 1, a tweeter 2, the tweeter 2 is located on the upper side of the woofer 1 and is on the same axis as the woofer 1, and the dashed part in Figure 4 is the axis.
  • the woofer 1 includes a first cover 11, a circuit board 12, a second bracket 13, a first U iron 14, a first magnet 15, a first washer 16, a second voice coil 17, and a first diaphragm 18. Circuit The plate 12 is fixed on the bottom of the second bracket 13, the first U iron 14 is fixed on the inner side of the second bracket 13, the cross section of the first U iron 14 is a U-shaped structure, and an accommodating groove is formed on the inner side.
  • the division 16 is located in the middle of the accommodating groove of the first U iron 14 , the second voice coil 17 is sleeved on the outside of the first magnet 15 and the first washer 16 , and the upper end of the second voice coil 17 is connected to the bottom of the first diaphragm 18 , the woofer 1 is responsible for reproducing mid-bass, so the first diaphragm 18 requires a small vibration frequency and a large vibration amplitude, so the thickness of the first diaphragm 18 is large and the diameter is large.
  • the second voice coil 17 enters the audio frequency After the current, the second voice coil 17 generates an alternating magnetic field under the action of the current, and the first magnet 15 also generates a constant magnetic field with the same size and direction.
  • the change of the audio current is constantly changing, so that the interaction of the two magnetic fields makes the second voice coil 17 move perpendicular to the direction of the current in the second voice coil 17. Since the second voice coil 17 is connected to the first diaphragm 18, The first diaphragm 18 is driven to vibrate, and the air is vibrated by the first diaphragm 18 to emit a low-frequency sound signal.
  • a third conductive module 5 is arranged on the second bracket 13, and the third conductive module 5 is a metal conductive sheet.
  • the metal conductive sheet is first placed in the mold, and after injection molding, the metal conductive sheet is buried. into the second bracket 13, that is, the third conductive module 5 and the second bracket 13 are integrally connected by injection molding, and the upper and lower ends of the third conductive module 5 are respectively connected with first pads 51 after being stamped and formed during the manufacturing and molding process.
  • the second pad 52, the wiring of the second voice coil 17 is welded on the first pad 51, and the second pad 52 is welded with the circuit board 12.
  • the tweeter 2 includes a first bracket 21, a first voice coil 22, a second U iron 23, a tuning net 24, a second magnet 25, a second washer 26, a second cover 27, a second diaphragm 28,
  • the second U iron 23 is fixed on the inner side of the second bracket 13 .
  • the cross section of the second U iron 23 is a U-shaped structure, and an accommodating slot is formed on the inner side.
  • the second magnet 25 and the second washer 26 are located in the accommodation of the second U iron 23 .
  • the first voice coil 22 is sleeved on the outside of the second magnet 25 and the second washer 26, the upper end of the first voice coil 22 is connected to the bottom of the second diaphragm 28, and the tweeter 2 is responsible for reproducing high notes.
  • the second diaphragm 28 is required to have a large vibration frequency and a small vibration amplitude, so the thickness of the second diaphragm 28 is small and the diameter is small.
  • An alternating magnetic field is generated, and the second magnet 25 also generates a constant magnetic field with the same size and direction. Since the size and direction of the magnetic field generated by the first voice coil 22 change continuously with the change of the audio current, so the two magnetic fields The interaction causes the first voice coil 22 to move perpendicular to the direction of the current in the first voice coil 22. Since the first voice coil 22 is connected to the second diaphragm 28, the second diaphragm 28 is driven to vibrate, and the second diaphragm 28 vibrates. The diaphragm 28 causes the vibration of the air to emit a high frequency sound signal.
  • the second conductive module 4 is a metal conductive sheet.
  • the metal conductive sheet is first placed in the mold. After injection molding, the metal conductive sheet is embedded in the first bracket 21, that is, the second conductive module 4. It is integrally connected with the first bracket 21 by injection molding, and the second conductive module 4 is stamped and formed in the manufacturing process. Soldered on the third pad 41 .
  • a first conductive module 3 is provided on the first protective cover 11, the first conductive module 3 is a flexible circuit board, and the outside of the first protective cover 11 is provided with an avoidance In the groove 111, the flexible circuit board is attached to the inner side of the escape groove 111, and the fourth pad 42 is welded to the upper end of the flexible circuit board.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

本发明提供了一种同轴喇叭，包括低音喇叭、高音喇叭，所述高音喇叭位于所述低音喇叭上侧且与所述低音喇叭在同一轴心上，所述低音喇叭包括第一护盖、电路板，所述第一护盖上设有第一导电模块，所述第一导电模块下端与所述电路板连接，所述高音喇叭包括第一支架、第一音圈，所述第一支架上设有第二导电模块，所述第一音圈的接线与所述第二导电模块上端连接，所述第一导电模块上端与所述第二导电模块下端连接。本发明的同轴喇叭，将高音喇叭与低音喇叭设置在同一轴心上，高、低音喇叭分别重放各自的频段，能够大大提高同轴喇叭的频宽，并且采用焊接的方式连接高音喇叭与低音喇叭，对于小尺寸的设备，能够实现量产。

Description

一种同轴喇叭 技术领域
本发明涉及喇叭领域，具体涉及一种同轴喇叭。
背景技术
同轴喇叭即同轴式扬声器，就是在同一个轴心上除了有中低音扬声器之外还有高音扬声器，分别负责重放高音和中低音，其优点在于能够大大提高单体扬声器的频宽。
目前，同轴喇叭采用的普遍结构为：将高音扬声器叠加在低音扬声器的前面，或者将低音扬声器叠加在高音扬声器的前面，形成叠罗汉式的结构，如申请号为201820174530.1的同轴喇叭及音箱，其公开了一种同轴喇叭，包括中低音喇叭、用于传播中低音喇叭的声波的中低音声速管、设于中低音声速管的内腔的高音喇叭、用于支撑高音喇叭且与中低音声速管的内壁相连的支撑结构；高音喇叭的长轴线与中低音喇叭的长轴线共线。在中低音喇叭的前面设置有中低音声速管用于传播中低音喇叭发出的声波，将中低音声速管的内径设置的足够大，再在中低音声速管内设置一与中低音喇叭同轴的高音喇叭；因此实现了单点发声的效果。这类型的喇叭由于尺寸大，容易接线，适用于汽车音箱等大尺寸的扬声器设备中。然而，对于耳机等小尺寸的设备，由于低音喇叭与高音喇叭的尺寸较小，在两者的连接装配过程中，难以用常规的接线方式进行连接，无法实现量产，存在较大的缺陷。
发明内容
针对以上问题，本发明提供一种同轴喇叭，将高音喇叭与低音喇叭设置在同一轴心上，高、低音喇叭分别重放各自的频段，能够大大提高同轴喇叭的频宽，并且采用焊接的方式连接高音喇叭与低音喇叭，对于小尺寸的设备，能够实现量产。
为实现上述目的，本发明通过以下技术方案来解决：
一种同轴喇叭，包括低音喇叭、高音喇叭，所述高音喇叭位于所述低音喇叭上侧且与所述低音喇叭在同一轴心上，所述低音喇叭包括第一护盖、电路板，所述第一护盖上设有第一导电模块，所述第一导电模块下端与所述电路板连接，所述高音喇叭包括第一支架、第一音圈，所述第一支架上设有第二导电模块，所述第一音圈的接线与所述第二导电模块上端连接，所述第一导电模块上端与所述第二导电模块下端连接。
具体的，所述低音喇叭还包括第二支架、第一U铁、第一磁铁、第二华司、第二音圈、第一膜片，所述第二支架上设有第三导电模块，所述第二音圈的接线与所述第三导电模块上端连接，所述第三导电模块下端与所述电路板连接。
具体的，所述第三导电模块与所述第二支架一体化成型连接，所述第三导电模块上下两端分别连接有第一焊盘、第二焊盘，所述第二音圈的接线焊接在所述第一焊盘上，所述第二焊盘与所述电路板焊接。
具体的，所述高音喇叭还包括第二U铁、调音网、第二磁铁、第一华司、第二护盖、第二膜片。
具体的，所述第二导电模块与所述第一支架一体化成型连接，所述第二导电模块上下两端分别连接有第三焊盘、第四焊盘，所述第一音圈的接线焊接在所述第三焊盘上。
具体的，所述第一导电模块与第一护盖一体化成型连接，所述第一导电模块上端连接有第五焊盘，所述第四焊盘与所述第五焊盘焊接。
具体的，所述第一导电模块为柔性线路板，所述第一护盖外侧设有避让槽，所述柔性线路板贴合在所述避让槽内侧，所述第四焊盘与所述柔性线路板上端焊接。
具体的，所述第一护盖与所述第一支架一体化成型连接，所述第一导电模块与所述第二导电模块一体化成型连接，所述第一导电模块与所述第二导电模块连接后形成第四导电模块，所述第四导电模块上端连接有第六焊盘，所述第一音圈的接线焊接在所述第六焊盘上，所述第四导电模块下端与所述电路板焊接。
本发明的有益效果是：
第一，本发明的同轴喇叭，将高音喇叭与低音喇叭设置在同一轴心上，高、低音喇叭分别重放各自的频段，能够大大提高同轴喇叭的频宽，从而实现一个喇叭就能完全满足人耳20～20kHz的频率接收范围；
第二，本发明的同轴喇叭适用于小尺寸的喇叭设备中，如耳机等设备，将高音喇叭和低音喇叭设计成可焊接式的结构，通过焊接的方式实现高音喇叭与低音喇叭之间的电性连接，能够解决现有技术中由于喇叭尺寸小而难以接线的问题。
附图说明
图1为实施例1中同轴喇叭的立体结构图。
图2为实施例1中同轴喇叭的仰视图。
图3为图2中A-A面的剖面图。
图4为实施例1中同轴喇叭的爆炸图。
图5为实施例1中第一护盖、第一导电模块的结构示意图。
图6为实施例1中第一支架、第二导电模块的结构示意图。
图7为实施例1中第二支架、第三导电模块的结构示意图。
图8为实施例1中第一导电模块、第二导电模块、第三导电模块、电路板、第二音圈、第一音圈的结构示意图。
图9为实施例2中同轴喇叭的爆炸图。
图10为实施例2中第一护盖、第一支架、第四导电模块的结构示意图。
图11为实施例2中第三导电模块、第四导电模块、电路板、第二音圈、第一音圈的结构示意图。
图12为实施例3中第第一护盖、第一导电模块的结构示意图。
图13为实施例1与对比例1的频响曲线图。
附图标记为：低音喇叭1、第一护盖11、避让槽111、电路板12、第二支架13、第一U铁14、第一磁铁15、第一华司16、第二音圈17、第一膜片18、高音喇叭2、第一支架21、第一音圈22、第二U铁23、调音网24、第二磁铁25、第一华司26、第二护盖27、第二膜片28、第一导电模块3、第五焊盘31、第二导电模块4、第三焊盘41、第四焊盘42、第三导电模块5、第一焊盘51、第二焊盘52、第四导电模块6、第六焊盘61。
具体实施方式
下面结合实施例和附图对本发明作进一步详细的描述，但本发明的实施方式不限于此。
实施例1
参照图1-8所示：一种同轴喇叭，包括低音喇叭1、高音喇叭2，高音喇叭2位于低音喇叭1上侧且与低音喇叭1在同一轴心上，图4中虚线部分即为轴心，低音喇叭1包括第一护盖11、电路板12、第二支架13、第一U铁14、第一磁铁15、第一华司16、第二音圈17、第一膜片18，电路板12固定在第二支架13底部，第一U铁14固定在第二支架13内侧，第一U铁14的剖面呈U型结构，内侧形成一个容置槽，第一磁铁15、第一华司16位于第一U铁14的容置槽中部，而第二音圈17套设在第一磁铁15、第一华司16外侧，第二音圈17的上端连接在第一膜片18底部，低音喇叭1负责重放中低音，因此第一膜片18要求其振动频率小、振动幅度大，因此第一膜片18的厚度较大，口径较大，当第二音圈17通入音频电流后，第二音圈17在电流作用下便产生交变的磁场，第一磁铁15同时也产生一个大小和方向不变的恒定磁场，由于第二音圈17所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第二音圈17作垂直于第二音圈17中电流方向的运动，由于第二音圈17和第一膜片18相连，从而带动第一膜片18产生振动，由第一膜片18引起空气的振动而发出中低频声音信号。
低音喇叭1中，第二支架13上设有第三导电模块5，第三导电模块5为金属导电片， 在生产过程中先将金属导电片放置在模具中，经过注塑后，金属导电片埋入第二支架13中，即第三导电模块5与第二支架13一体化注塑成型连接，而第三导电模块5在制作成型过程中经过冲压成型后上下两端分别连接有第一焊盘51、第二焊盘52，第二音圈17的接线焊接在第一焊盘51上，第二焊盘52与电路板12焊接。
高音喇叭2包括第一支架21、第一音圈22、第二U铁23、调音网24、第二磁铁25、第二华司26、第二护盖27、第二膜片28，第二U铁23固定在第二支架13内侧，第二U铁23的剖面呈U型结构，内侧形成一个容置槽，第二磁铁25、第二华司26位于第二U铁23的容置槽中部，而第一音圈22套设在第二磁铁25、第二华司26外侧，第一音圈22的上端连接在第二膜片28底部，高音喇叭2负责重放高音，因此第二膜片28要求其振动频率大、振动幅度小，因此第二膜片28的厚度较小，口径较小，当第一音圈22通入音频电流后，第一音圈22在电流作用下便产生交变的磁场，第二磁铁25同时也产生一个大小和方向不变的恒定磁场，由于第一音圈22所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第一音圈22作垂直于第一音圈22中电流方向的运动，由于第一音圈22和第二膜片28相连，从而带动第二膜片28产生振动，由第二膜片28引起空气的振动而发出高频声音信号。
高音喇叭2中，第二导电模块4为金属导电片，在生产过程中先将金属导电片放置在模具中，经过注塑后，金属导电片埋入第一支架21中，即第二导电模块4与第一支架21一体化注塑成型连接，而第二导电模块4在制作过程中经过冲压成型后上下两端分别连接有第三焊盘41、第四焊盘42，第一音圈22的接线焊接在第三焊盘41上。
为了实现低音喇叭1与高音喇叭2之间的电性连接，在第一护盖11上设有第一导电模块3，第一导电模块3为金属导电片，在生产过程中先将金属导电片放置在模具中，经过注塑后，第一导电模块3与第一护盖11一体化注塑成型连接，另外，第一导电模块3上端通过弯折后还形成有第五焊盘31，第四焊盘42与第五焊盘31焊接，第一导电模块3下端与电路板12连接，第一支架21上设有第二导电模块4，第一音圈22的接线与第二导电模块4上端连接，第一导电模块3上端与第二导电模块4下端连接。
上述方案将高音喇叭2和低音喇叭1设计成可焊接式的结构，通过焊接的方式实现高音喇叭2与低音喇叭1之间的电性连接，能够解决现有技术中由于喇叭尺寸小而难以接线的问题，从而实现量产。
对比例1
以普通低音喇叭作为对比例1。
测试：对实施例1的同轴喇叭与对比例1的普通低音喇叭进行性能对比测试，测试结果如图13所示，由图13中的频响曲线明显看出，实施例1的同轴喇叭的在高频时能够提升超过10db以上，并且有效频宽延伸到30kHz，说明本申请的同轴喇叭能够明显改善普通低音喇叭高频信号较差的问题。
实施例2
参照图9-11所示：一种同轴喇叭，包括低音喇叭1、高音喇叭2，高音喇叭2位于低音喇叭1上侧且与低音喇叭1在同一轴心上，图4中虚线部分即为轴心，低音喇叭1包括第一护盖11、电路板12、第二支架13、第一U铁14、第一磁铁15、第一华司16、第二音圈17、第一膜片18，电路板12固定在第二支架13底部，第一U铁14固定在第二支架13内侧，第一U铁14的剖面呈U型结构，内侧形成一个容置槽，第一磁铁15、第一华司16位于第一U铁14的容置槽中部，而第二音圈17套设在第一磁铁15、第一华司16外侧，第二音圈17的上端连接在第一膜片18底部，低音喇叭1负责重放中低音，因此第一膜片18要求其振动频率小、振动幅度大，因此第一膜片18的厚度较大，口径较大，当第二音圈17通入音频电流后，第二音圈17在电流作用下便产生交变的磁场，第一磁铁15同时也产生一个大小和方向不变的恒定磁场，由于第二音圈17所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第二音圈17作垂直于第二音圈17中电流方向的运动，由于第二音圈17和第一膜片18相连，从而带动第一膜片18产生振动，由第一膜片18引起空气的振动而发出中低频声音信号。
低音喇叭1中，第二支架13上设有第三导电模块5，第三导电模块5为金属导电片，在生产过程中先将金属导电片放置在模具中，经过注塑后，金属导电片埋入第二支架13中，即第三导电模块5与第二支架13一体化注塑成型连接，而第三导电模块5在制作成型过程中经过冲压成型后上下两端分别连接有第一焊盘51、第二焊盘52，第二音圈17的接线焊接在第一焊盘51上，第二焊盘52与电路板12焊接。
高音喇叭2包括第一支架21、第一音圈22、第二U铁23、调音网24、第二磁铁25、第二华司26、第二护盖27、第二膜片28，第二U铁23固定在第二支架13内侧，第二U铁23的剖面呈U型结构，内侧形成一个容置槽，第二磁铁25、第二华司26位于第二U铁23的容置槽中部，而第一音圈22套设在第二磁铁25、第二华司26外侧，第一音圈22的上端连接在第二膜片28底部，高音喇叭2负责重放高音，因此第二膜片28要求其振动频率大、振动幅度小，因此第二膜片28的厚度较小，口径较小，当第一音圈22通入音频电流后，第一音圈22在电流作用下便产生交变的磁场，第二磁铁25同时也产生一个大小和方向不变的恒 定磁场，由于第一音圈22所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第一音圈22作垂直于第一音圈22中电流方向的运动，由于第一音圈22和第二膜片28相连，从而带动第二膜片28产生振动，由第二膜片28引起空气的振动而发出高频声音信号。
第一护盖11与第一支架21一体化成型连接，本实施例取消了使用如实施例1所示的第一导电模块3与第二导电模块4，作为取代的，在一体化成型的第一护盖11与第一支架21上设置有第四导电模块6，同样的，第四导电模块6为金属导电片，通过注塑成型埋入第一护盖11与第一支架21内侧，并且第四导电模块6上端连接有第六焊盘61，第一音圈22的接线焊接在第六焊盘61上，第四导电模块6下端与电路板12焊接，而低音喇叭1与高音喇叭2之间通过第四导电模块6实现电性连接。
实施例3
参照图12所示：一种同轴喇叭，包括低音喇叭1、高音喇叭2，高音喇叭2位于低音喇叭1上侧且与低音喇叭1在同一轴心上，图4中虚线部分即为轴心，低音喇叭1包括第一护盖11、电路板12、第二支架13、第一U铁14、第一磁铁15、第一华司16、第二音圈17、第一膜片18，电路板12固定在第二支架13底部，第一U铁14固定在第二支架13内侧，第一U铁14的剖面呈U型结构，内侧形成一个容置槽，第一磁铁15、第一华司16位于第一U铁14的容置槽中部，而第二音圈17套设在第一磁铁15、第一华司16外侧，第二音圈17的上端连接在第一膜片18底部，低音喇叭1负责重放中低音，因此第一膜片18要求其振动频率小、振动幅度大，因此第一膜片18的厚度较大，口径较大，当第二音圈17通入音频电流后，第二音圈17在电流作用下便产生交变的磁场，第一磁铁15同时也产生一个大小和方向不变的恒定磁场，由于第二音圈17所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第二音圈17作垂直于第二音圈17中电流方向的运动，由于第二音圈17和第一膜片18相连，从而带动第一膜片18产生振动，由第一膜片18引起空气的振动而发出中低频声音信号。
低音喇叭1中，第二支架13上设有第三导电模块5，第三导电模块5为金属导电片，在生产过程中先将金属导电片放置在模具中，经过注塑后，金属导电片埋入第二支架13中，即第三导电模块5与第二支架13一体化注塑成型连接，而第三导电模块5在制作成型过程中经过冲压成型后上下两端分别连接有第一焊盘51、第二焊盘52，第二音圈17的接线焊接在第一焊盘51上，第二焊盘52与电路板12焊接。
高音喇叭2包括第一支架21、第一音圈22、第二U铁23、调音网24、第二磁铁25、 第二华司26、第二护盖27、第二膜片28，第二U铁23固定在第二支架13内侧，第二U铁23的剖面呈U型结构，内侧形成一个容置槽，第二磁铁25、第二华司26位于第二U铁23的容置槽中部，而第一音圈22套设在第二磁铁25、第二华司26外侧，第一音圈22的上端连接在第二膜片28底部，高音喇叭2负责重放高音，因此第二膜片28要求其振动频率大、振动幅度小，因此第二膜片28的厚度较小，口径较小，当第一音圈22通入音频电流后，第一音圈22在电流作用下便产生交变的磁场，第二磁铁25同时也产生一个大小和方向不变的恒定磁场，由于第一音圈22所产生磁场的大小和方向随音频电流的变化不断地改变，这样两个磁场的相互作用使第一音圈22作垂直于第一音圈22中电流方向的运动，由于第一音圈22和第二膜片28相连，从而带动第二膜片28产生振动，由第二膜片28引起空气的振动而发出高频声音信号。
高音喇叭2中，第二导电模块4为金属导电片，在生产过程中先将金属导电片放置在模具中，经过注塑后，金属导电片埋入第一支架21中，即第二导电模块4与第一支架21一体化注塑成型连接，而第二导电模块4在制作过程中经过冲压成型后上下两端分别连接有第三焊盘41、第四焊盘42，第一音圈22的接线焊接在第三焊盘41上。
为了实现低音喇叭1与高音喇叭2之间的电性连接，在第一护盖11上设有第一导电模块3，第一导电模块3为柔性线路板，第一护盖11外侧设有避让槽111，柔性线路板贴合在避让槽111内侧，第四焊盘42与柔性线路板上端焊接。
以上实施例仅表达了本发明的3种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (8)

  1. 一种同轴喇叭，包括低音喇叭(1)、高音喇叭(2)，其特征在于，所述高音喇叭(2)位于所述低音喇叭(1)上侧且与所述低音喇叭(1)在同一轴心上，所述低音喇叭(1)包括第一护盖(11)、电路板(12)，所述第一护盖(11)上设有第一导电模块(3)，所述第一导电模块(3)下端与所述电路板(12)连接，所述高音喇叭(2)包括第一支架(21)、第一音圈(22)，所述第一支架(21)上设有第二导电模块(4)，所述第一音圈(22)的接线与所述第二导电模块(4)上端连接，所述第一导电模块(3)上端与所述第二导电模块(4)下端连接。
  2. 根据权利要求1所述的一种同轴喇叭，其特征在于，所述低音喇叭(1)还包括第二支架(13)、第一U铁(14)、第一磁铁(15)、第一华司(16)、第二音圈(17)、第一膜片(18)，所述第二支架(13)上设有第三导电模块(5)，所述第二音圈(17)的接线与所述第三导电模块(5)上端连接，所述第三导电模块(5)下端与所述电路板(12)连接。
  3. 根据权利要求2所述的一种同轴喇叭，其特征在于，所述第三导电模块(5)与所述第二支架(13)一体化成型连接，所述第三导电模块(5)上下两端分别连接有第一焊盘(51)、第二焊盘(52)，所述第二音圈(17)的接线焊接在所述第一焊盘(51)上，所述第二焊盘(52)与所述电路板(12)焊接。
  4. 根据权利要求1所述的一种同轴喇叭，其特征在于，所述高音喇叭(2)还包括第二U铁(23)、调音网(24)、第二磁铁(25)、第二华司(26)、第二护盖(27)、第二膜片(28)。
  5. 根据权利要求1所述的一种同轴喇叭，其特征在于，所述第二导电模块(4)与所述第一支架(21)一体化成型连接，所述第二导电模块(4)上下两端分别连接有第三焊盘(41)、第四焊盘(42)，所述第一音圈(22)的接线焊接在所述第三焊盘(41)上。
  6. 根据权利要求5所述的一种同轴喇叭，其特征在于，所述第一导电模块(3)与第一护盖(11)一体化成型连接，所述第一导电模块(3)上端连接有第五焊盘(31)，所述第四焊盘(42)与所述第五焊盘(31)焊接。
  7. 根据权利要求5所述的一种同轴喇叭，其特征在于，所述第一导电模块(3)为柔性线路板，所述第一护盖(11)外侧设有避让槽(111)，所述柔性线 路板贴合在所述避让槽(111)内侧，所述第四焊盘(42)与所述柔性线路板上端焊接。
  8. 根据权利要求1所述的一种同轴喇叭，其特征在于，所述第一护盖(11)与所述第一支架(21)一体化成型连接，所述第一导电模块(3)与所述第二导电模块(4)一体化成型连接，所述第一导电模块(3)与所述第二导电模块(4)连接后形成第四导电模块(6)，所述第四导电模块(6)上端连接有第六焊盘(61)，所述第一音圈(22)的接线焊接在所述第六焊盘(61)上，所述第四导电模块(6)下端与所述电路板(12)焊接。
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