WO2022218101A1 - 扬声器及音频再现装置 - Google Patents
扬声器及音频再现装置 Download PDFInfo
- Publication number
- WO2022218101A1 WO2022218101A1 PCT/CN2022/081796 CN2022081796W WO2022218101A1 WO 2022218101 A1 WO2022218101 A1 WO 2022218101A1 CN 2022081796 W CN2022081796 W CN 2022081796W WO 2022218101 A1 WO2022218101 A1 WO 2022218101A1
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- Prior art keywords
- diaphragm
- coil
- driving member
- orthographic projection
- sound outlet
- Prior art date
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- 230000035945 sensitivity Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 18
- 230000002093 peripheral effect Effects 0.000 description 11
- 239000012528 membrane Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
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Classifications
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Definitions
- the present application relates to the field of electronic devices, and in particular, to a speaker and an audio reproduction device provided with the speaker.
- the existing balanced diaphragm loudspeaker includes two symmetrically arranged magnetic drivers and a diaphragm.
- the diaphragm is magnetized by the energized coils on both sides and then driven by the magnetic driver to vibrate and produce sound. Because the diaphragm is directly subjected to force after being magnetized , no transmission delay, so the balanced diaphragm unit has better high-frequency transient and extension characteristics. However, in the existing balanced-diaphragm loudspeaker, the diaphragm is subjected to uneven force, so that the sensitivity of the balanced-diaphragm unit is poor.
- the purpose of the present application is to provide a loudspeaker with uniform force on a plane diaphragm and an audio reproduction device provided with the loudspeaker.
- a loudspeaker comprising: a diaphragm, a first driving member, a second driving member, a first coil and a second coil; the first side of the diaphragm is provided with a first driving member The second side of the diaphragm is provided with the second coil and the second driving member; the first coil is arranged around the outer circumference of the first driving member, and the second driving member is The diaphragm is arranged around the outer circumference of the second coil; if the first coil and the second coil are energized, the vibrating film is magnetized and is placed between the first and second driving members. Driven to vibrate and sound.
- the present application also provides an audio reproduction device, including a casing and a speaker, the casing includes an inner cavity and a sound outlet channel communicating with the inner cavity, the speaker is arranged in the inner cavity of the outer casing, and the speaker has an inner cavity. The sound outlet is communicated with the sound outlet channel.
- the first coil of the speaker of the present application is sleeved on the outer periphery of the first driving member, and the second driving member is sleeved on the outer periphery of the second coil. Therefore, the first driving member and the second driving member are asymmetrical, that is, the The orthographic projection of the first driving member on the diaphragm does not coincide with the orthographic projection of the second driving member on the diaphragm; when the first coil and the second coil are energized, the The diaphragm is magnetized uniformly and rapidly, and the first driving member and the second driving member directly apply magnetic force to the already magnetized diaphragm, without transmission loss and transmission delay, so that the high-frequency transient and extension are better; Secondly, the magnetic force applied to the diaphragm between the first driving member and the second driving member is evenly distributed, so that the diaphragm is located between the first driving member and the second driving member. The force distribution is uniform, so as to improve the sensitivity of the diaphragm
- FIG. 1 is a schematic diagram of a three-dimensional structural component of a speaker according to a first embodiment of the present application
- FIG. 2 is a schematic three-dimensional structure diagram of the loudspeaker in FIG. 1 from another viewing angle;
- Fig. 3 is a sectional view along line III-III in Fig. 1;
- Fig. 4 is the three-dimensional structure exploded schematic diagram of the loudspeaker in Fig. 1;
- FIG. 5 is a schematic three-dimensional structure diagram of the loudspeaker in FIG. 4 from another viewing angle;
- FIG. 6 is a schematic diagram of a three-dimensional structure of an audio reproduction device according to an embodiment of the present application.
- FIG. 7 is a schematic cross-sectional structural diagram of a speaker according to a second embodiment of the present application.
- FIG. 8 is a schematic cross-sectional structural diagram of a speaker according to a third embodiment of the present application.
- FIG. 9 is a schematic cross-sectional structure diagram of a speaker according to a fourth embodiment of the present application.
- FIG. 10 is a schematic cross-sectional structural diagram of a speaker according to a fifth embodiment of the present application.
- a loudspeaker comprising:
- a diaphragm a diaphragm, a first driving member, a second driving member, a first coil and a second coil;
- the first driving member and the first coil are provided on the first side of the diaphragm, and the second coil and the second driving member are provided on the second side of the diaphragm;
- the first coil is arranged around the outer circumference of the first driving member
- the second driving member is arranged around the outer circumference of the second coil; if the first coil and the second coil are energized , the diaphragm is magnetized and vibrates and makes sound under the driving of the first driving member and the second driving member.
- the centerline of the diaphragm, the centerline of the first driving member, the centerline of the second driving member, the centerline of the first coil, and the centerline of the second coil are collinear.
- the orthographic projection of the outer contour of the second coil on the diaphragm coincides with the orthographic projection of the outer contour of the first driving member on the diaphragm; or the second coil is on the diaphragm
- the orthographic projection of the first driving member on the diaphragm is located in the orthographic projection of the first driving member on the diaphragm; or the orthographic projection of the first driving member on the diaphragm is located in the second coil on the diaphragm. in the orthographic projection.
- the orthographic projection of the first coil on the vibrating membrane coincides with the orthographic projection of the second driving member on the vibrating membrane; or the orthographic projection of the first coil on the vibrating membrane is located on the vibrating membrane.
- the orthographic projection of the second driving member on the diaphragm; or the orthographic projection of the second driving member on the diaphragm is located in the orthographic projection of the first coil on the diaphragm.
- the orthographic projection of the first coil on the diaphragm overlaps the orthographic projection of the second driving member on the diaphragm.
- the orthographic projection of the second coil on the diaphragm coincides with the orthographic projection of the first driving member on the diaphragm, and the orthographic projection of the first coil on the diaphragm is the same as the orthographic projection of the first coil on the diaphragm.
- the orthographic projections of the two driving elements on the diaphragm coincide.
- the first driving member is a cylindrical magnet block or a magnet ring, and the outer diameter of the magnet block or the magnet ring is equal to or greater than the outer diameter of the second coil.
- the second driving member is a magnet ring sleeved on the second coil, the outer diameter of the magnet ring is equal to the outer diameter of the first coil, and the inner diameter of the magnet ring is equal to or smaller than the The inner diameter value of the first coil.
- the orthographic projection of the first driving member on the diaphragm overlaps with the orthographic projection of the second driving member on the diaphragm.
- first gap between the first coil and the first driving member and the diaphragm; and a second gap is formed between the second driving member and the second coil and the diaphragm.
- the loudspeaker further includes a diaphragm assembly, the diaphragm assembly further includes a first washer and a second washer, and the first washer and the second washer are arranged on opposite sides of the diaphragm to position the diaphragm. membrane, the first gasket is located in the first gap, and the second gasket is located in the second gap.
- the first washer is attached to the bottom surface of the diaphragm and is surrounded by the edge of the diaphragm
- the second washer is attached to the top surface of the diaphragm and is surrounded by the edge of the diaphragm .
- the speaker includes a casing, the casing is provided with a first sound outlet, the inner cavity of the second coil communicates with the first sound outlet or the first driving member is provided with a communication with the first sound outlet.
- the through hole of the sound hole is provided.
- the second coil and the second driving member are closer to one side of the first sound outlet than the first driving member and the first coil, and the inner cavity of the second coil is surrounded by the Describe the surroundings of the first sound outlet.
- the first driving member and the first coil are closer to one side of the first sound outlet hole than the second coil and the second driving member, and the through hole of the first driving member is surrounded by around the first sound outlet.
- the casing includes a top plate and a side wall surrounding the edge of the top plate, the first sound outlet is opened on the top plate, and the side wall is provided with a wire groove along the axial direction, and the wire groove is used to accommodate the electrical outlet.
- the wires connected to the first coil and the second coil.
- the loudspeaker further includes a connecting plate and a diaphragm assembly, the connecting plate is connected to the casing so that the diaphragm assembly, the magnetic driving assembly and the coil assembly are positioned in the casing.
- the connecting plate is provided with a second sound outlet hole, and when the inner cavity of the second coil is connected to the first sound outlet hole, the through hole of the first driving member is connected to the second sound outlet hole; When the through hole of the first driving member communicates with the first sound outlet hole, the inner cavity of the second coil communicates with the second sound outlet hole.
- the diameter value of the inner cavity of the second coil is smaller than the diameter value of the through hole of the first driving member.
- An audio reproduction device includes a shell and a speaker, the shell includes an inner cavity and a sound outlet channel communicating with the inner cavity, the speaker is arranged in the inner cavity of the outer shell, and the sound outlet of the speaker communicates with the output channel.
- the terms “installed”, “connected”, “connected” and “disposed on” should be interpreted in a broad sense, for example, it may be
- the fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of the two components.
- the specific meanings of the above terms in this application can be understood in specific situations.
- FIG. 1 is a schematic diagram of a three-dimensional structure of the speaker 100 according to the first embodiment of the present application
- FIG. 2 is a schematic diagram of the three-dimensional structure of the speaker 100 in FIG. 1 from another viewing angle; Sectional view taken along line III-III in FIG. 1 .
- the speaker 100 in the first embodiment of the present application includes a diaphragm assembly 20 , a magnetic drive assembly 30 and a coil assembly 50
- the diaphragm assembly 20 includes a diaphragm 21
- the magnetic drive assembly 30 includes a first drive member 31 and the second driving member 33
- the coil assembly 50 includes a first coil 51 and a second coil 53 .
- the first driving member 31 is disposed on the first side of the diaphragm 21 , and the first coil 51 is surrounded by the outer circumference of the first driving member 31 , that is, the first side of the diaphragm 21 is provided with a The first driving member 31 and the first coil 51 ; the second coil 53 is arranged on the second side of the diaphragm 21 , and the second driving member 33 is surrounded by the second coil 53 .
- the outer periphery, that is, the second side of the diaphragm 21 is provided with the second coil 53 and the second driving member 33 .
- the first coil 51 is sleeved on the outer periphery of the first driving member 31
- the second driving member 33 is sleeved on the outer periphery of the second coil 53
- the first driving member 31 The orthographic projection on the diaphragm 21 is located in the middle of the diaphragm 21, and the orthographic projection of the second driving member 33 on the diaphragm 21 is located around the diaphragm 21;
- the second coil The orthographic projection of 53 on the diaphragm 21 is located in the middle of the diaphragm 21, and the orthographic projection of the first coil 51 on the diaphragm 21 is located around the diaphragm 21;
- the vibrating film 21 is a flat vibrating film, and the flat vibrating film may be, but not limited to, a superconducting magnetic amorphous ultra-thin alloy flat film or a multi-layer composite film.
- the diaphragm 21 can also be made of a polymer material with good flexibility, so that the sound of the speaker 100 can be rounded at high frequencies.
- the speaker 100 provided by the present application includes a diaphragm 21 , a first driving member 31 and a second driving member 33 located on opposite sides of the diaphragm 21 , and a first coil 51 and a first coil 51 located on opposite sides of the diaphragm 21 .
- the orthographic projection of the first driving member 31 on the diaphragm 21 is located in the middle of the diaphragm 21
- the orthographic projection of the second driving member 33 on the diaphragm 21 is located in the diaphragm 21 . around the membrane 21 .
- the distribution of the magnetic force of the diaphragm 21 is uniform, so that the force distribution of the diaphragm 21 between the first driving member 31 and the second driving member 33 is uniform, so as to improve the sensitivity of the diaphragm 21 and make the diaphragm 21 evenly distributed.
- the 21 is easier to drive and vibrate the air to sound, output higher sound pressure, and the timbre is rounded in high frequency.
- the centerline of the diaphragm 21 , the centerline of the first driving member 31 , the centerline of the second driving member 33 , the centerline of the first coil 51 and the The center lines of the second coils 53 are collinear L; not only can the diaphragm 21 be magnetized uniformly and quickly, but also the diaphragm 21 can be distributed by the driving force of the first driving member 31 and the second driving member 33 more even.
- the orthographic projection of the outer contour of the second coil 53 on the diaphragm 21 coincides with the orthographic projection of the outer contour of the first driving member 31 on the diaphragm 21, that is, the The outer contour of the orthographic projection of the second coil 53 on the diaphragm 21 coincides with the outer contour of the orthographic projection of the first driving member 31 on the diaphragm 21; If the coil 53 is a circular coil, the first driving member 31 is also a cylinder, and the outer diameter of the circular coil is equal to the outer diameter of the cylinder; a plurality of the second coils 53 are rectangular coils , the second driving member 31 is a rectangular body, and the length and width of the outer contour of the rectangular coil are equal to the length and width of the outer contour of the rectangular body.
- the orthographic projection of the first coil 51 on the diaphragm 21 coincides with the orthographic projection of the second driving member 33 on the diaphragm 21 , that is, the contour of the first coil 51 is on the diaphragm 21 .
- the orthographic projection on 21 is the same as the orthographic projection of the outline of the second driving member 33 on the diaphragm 21; specifically, if the first coil 51 is a circular coil, the second driving member 33 It is also a torus, and the outer diameter and inner diameter of the annular coil are respectively equal to the outer diameter and inner diameter of the annular body; a plurality of the first coils 51 are rectangular coils, then the second driving member 31 is a rectangular ring body, and the length and width of the outer peripheral surface of the rectangular coil are equal to the length and width of the outer peripheral surface of the rectangular ring.
- the orthographic projection of the second coil 53 on the diaphragm 21 and the orthographic projection of the first driving member 31 on the diaphragm 21 are both located in the middle of the diaphragm 21 ;
- the orthographic projection of the first coil 51 on the diaphragm 21 and the orthographic projection of the second driving member 33 on the diaphragm 21 are both located around the diaphragm 21; therefore, the first The driving member 31 and the second driving member 33 can make the force distribution of the magnetized diaphragm 21 uniform, so as to improve the sensitivity of the diaphragm 21 .
- the orthographic projection of the second coil 53 on the diaphragm 21 may be located within the orthographic projection of the first driving member 31 on the diaphragm 21 , and the first coil 51 is located on the diaphragm 21 .
- the orthographic projection of the diaphragm 21 coincides with the orthographic projection of the second driving member 33 on the diaphragm 21; or the orthographic projection of the first coil 51 on the diaphragm 21 is located in the first
- the orthographic projection of the second driving member 33 on the diaphragm 21; or the orthographic projection of the first coil 51 on the diaphragm 21 overlaps with the orthographic projection of the second driving member 33 on the diaphragm 21 .
- the orthographic projection of the first driving member 31 on the diaphragm 21 may also be located within the orthographic projection of the second coil 53 on the diaphragm 21 , and the first coil 51
- the orthographic projection on the diaphragm 21 coincides with the orthographic projection of the second driving member 33 on the diaphragm 21; or the orthographic projection of the first coil 51 on the diaphragm 21 is located at The orthographic projection of the second driving member 33 on the diaphragm 21; or the orthographic projection of the first coil 51 on the diaphragm 21 overlaps with the orthographic projection of the second driving member 33 on the diaphragm 21 .
- FIG. 4 is an exploded schematic diagram of the three-dimensional structure of the speaker 100 in FIG. 1 ;
- FIG. 5 is a schematic diagram of the three-dimensional structure of the speaker 100 in FIG. 4 from another viewing angle.
- the first coil 51 and the second coil 53 are both circular coils
- the first driving member 31 is a cylindrical magnet block
- the second driving member 33 is a circular magnet ring.
- the orthographic projection of the first driving member 31 on the diaphragm 21 is a circle
- the orthographic projection of the second coil 53 on the diaphragm 21 is a circular ring.
- the rings are all located in the middle of the diaphragm 21, and the periphery of the circle coincides with the outer periphery of the ring, that is, the diameter of the circle is equal to the outer diameter of the ring;
- the orthographic projections of the first coil 51 and the second driving member 33 on the diaphragm 21 are both circular rings, and the two circular rings are located around the diaphragm 21 and overlap, that is, two The outer diameter and inner diameter of each ring are equal.
- the sum of the area of the orthographic projection of the first driving member 31 on the diaphragm 21 and the area of the orthographic projection of the second driving member 33 on the diaphragm 21 is equal to the diaphragm 21
- the surface area of the magnetized diaphragm 21 is further uniform; the area of the orthographic projection of the first coil 51 on the diaphragm 21 is the same as the area of the second coil 53 on the diaphragm 21
- the sum of the areas of the orthographic projections is equal to the surface area of the diaphragm 21 , which further makes the magnetization of the diaphragm 21 more uniform.
- the first driving member 31 and the first coil 51 are located on the first side of the diaphragm 21 , and both the first driving member 31 and the first coil 51 are connected to the vibrating film 21 .
- the second driving member 33 and the second coil 53 are located on the opposite second side of the diaphragm 21 .
- the second gap 213 After the diaphragm 21 is magnetized by the second coil 53 and the first coil 51 , the diaphragm 21 is driven by the magnetic force between the first driving member 31 and the second driving member 33 Vibrate in the first gap 211 and the second gap 213 to generate sound.
- the diaphragm 21 is in a circular shape, the axis of the first driving member 31 , the axis of the second driving member 33 , the axis of the second coil 53 , the axis of the first coil 51 and all
- the axes of the diaphragm 21 are collinear, that is, the axis of the first driving member 31 , the axis of the second driving member 33 , the axis of the second coil 53 , the axis of the first coil 51 and the axis of the vibration
- the axes of the membranes 21 are the respective centerlines.
- the second driving member 33 is sleeved on the outer periphery of the second coil 53 so that the orthographic projections of the second driving member 33 and the second coil 53 on the diaphragm 21 do not overlap;
- the first The coil 51 is sleeved on the outer periphery of the first driving member 31 , so that the orthographic projections of the first driving member 31 and the first coil 51 on the diaphragm 21 do not overlap.
- the orthographic projections of the second driving member 33 and the second coil 53 on the diaphragm 21 are concentric, and the orthographic projections of the first driving member 31 and the first coil 51 on the diaphragm 21 are concentric.
- the projection is concentric.
- the orthographic projection area of the second driving member 33 on the diaphragm 21 corresponds to the orthographic projection area of the first coil 51 on the diaphragm 21 , and the first driving member 31 is on the diaphragm 21 .
- the orthographic projection area on 21 corresponds to the orthographic projection area of the second coil 53 on the diaphragm 21 .
- the axial direction refers to the direction parallel to the axis of the second coil 53 , the axial direction is perpendicular to the top surface of the diaphragm 21 ; the top side refers to the direction of the sound outlet of the speaker 100 consistent with On one side, the bottom side refers to the side away from the direction of the sound outlet of the speaker 100 .
- the outer periphery of the orthographic projection of the second coil 53 on the diaphragm 21 coincides with the inner periphery of the orthographic projection of the second driving member 33 on the diaphragm 21, and the first coil
- the inner periphery of the orthographic projection of 51 on the diaphragm 21 coincides with the outer periphery of the orthographic projection of the first driving member 31 on the diaphragm 21 .
- the outer periphery of the orthographic projection of the second coil 53 on the diaphragm 21 is spaced apart from the inner periphery of the orthographic projection of the second driving member 33 on the diaphragm 21
- the The inner periphery of the orthographic projection of the first coil 51 on the diaphragm 21 is spaced apart from the outer periphery of the orthographic projection of the first driving member 31 on the diaphragm 21 .
- the speaker 100 further includes a casing 60 for accommodating the diaphragm assembly 20 , the magnetic drive assembly 30 and the coil assembly 50 , and the casing 60 is provided with a first Sound hole 61 .
- the second driving member 33 and the second coil 53 are closer to one side of the first sound outlet 61 than the first coil 51 and the first driving member 31 , that is, the second driving member 33 and the second coil 53 are located on the top side of the diaphragm 21, the first driving member 31 and the first coil 51 are located on the bottom side of the diaphragm 21;
- the cavity communicates with the first sound outlet hole 61 .
- the inner cavity of the second coil 53 is arranged around the first sound outlet hole 61 .
- the housing 60 includes a top plate 62 and a side wall 64 surrounding the edge of the top plate 62 .
- the top plate 62 and the side walls 64 enclose a receiving space 65 , and the receiving space 65 is used for receiving a shelter.
- the diaphragm assembly 20 , the magnetic drive assembly 30 and the coil assembly 50 are described.
- the first sound outlet 61 is opened on the top plate 62 , and the side wall 64 is provided with a wire slot 66 in the axial direction.
- the wire slot 66 is used for receiving and electrically connecting the first coil 51 and the second coil 53 Wire 55.
- the top plate 62 is a circular plate
- the first sound outlet 61 is located in the middle of the circular plate
- the side wall 64 is a ring structure surrounding the edge of the top plate 62 .
- the diaphragm assembly 20 further includes a first washer 23 and a second washer 25 .
- the first washer 23 and the second washer 25 are disposed on opposite sides of the diaphragm 21 .
- the first washer 23 is located in the first gap 211
- the second washer 25 is located in the second gap 213 .
- the inner diameters of the first washer 23 and the second washer 25 are both larger than the inner diameter of the second driving member 33
- the outer diameters of the first washer 23 and the second washer 25 are both smaller than or equal to The value of the outer diameter of the second driving member 33 .
- the diaphragm 21 is a circular diaphragm
- the first gasket 23 is attached to the bottom surface of the diaphragm 21 and surrounds the edge of the diaphragm 21
- the second gasket 25 is attached It is close to the top surface of the diaphragm 21 and surrounds the edge of the diaphragm 21 .
- the second coil 53 is accommodated in the inner cavity of the second driving member 33 , the second coil 53 is arranged around the first sound outlet 61 , and the second The coil 53 faces the middle area of the top surface of the diaphragm 21, and the second driving member 33 faces the surrounding area of the top surface of the diaphragm 21; the first coil 51 is sleeved outside the magnet block, The first driving member 31 is facing the middle area of the bottom surface of the diaphragm 21, and the first coil 51 is facing the surrounding area of the bottom surface of the diaphragm 21; the magnet block, the diaphragm 21 and the The second coil 53 is coaxial.
- the magnetic force of the magnet block is larger, and the magnet block is facing the middle area of the diaphragm 21, and the second driving member 33 is facing the diaphragm. 21 surrounding area.
- the magnetic force applied by the first driving member 31 and the second driving member 33 to the magnetized diaphragm 21 is evenly distributed, and the magnetic force is mostly distributed on the diaphragm 21 In the middle area of the diaphragm 21, the torque is larger, so that the diaphragm 21 is more easily driven to vibrate, and the vibration of the diaphragm 21 drives the air around it to vibrate to produce sound, so as to output a higher sound pressure.
- the second driving member 33 is sleeved outside the second coil 53 and stacked on the top side of the diaphragm assembly 20 ;
- the first coil 51 is sleeved on the first driving member 31 outside, and stacked on the bottom side of the diaphragm assembly 20 .
- the first washer 23 is clamped between the first coil 51 and the diaphragm 21
- the second washer 25 is clamped between the second driving member 33 and the diaphragm 21 .
- the speaker 100 further includes a connecting plate 70 connected to the housing 60 so that the diaphragm assembly 20 , the magnetic driving assembly 30 and the coil assembly 50 are positioned in the casing 60 .
- the connecting plate 70 is provided with a notch 72 , and the notch 72 is used for the insertion of the wires 55 .
- the second driving member 33 is sleeved outside the second coil 53 , and the two are stacked on the top of the diaphragm assembly 20 .
- the first coil 51 is sleeved outside the first driving member 31, and the two are stacked on the bottom side of the diaphragm assembly 20;
- the wire 55 is electrically connected to the first coil 51 and the second coil 53;
- the whole of the diaphragm assembly 20, the magnetic drive assembly 30 and the coil assembly 50 are accommodated in the accommodation space 65 of the housing 60, and the first
- the second driving member 33 and the second coil 53 are close to the top plate 62 , the outer peripheral surfaces of the second driving member 33 and the first coil 51 are in close contact with the inner peripheral surface of the housing 60 , and the wires 55 is accommodated in the wire slot 66 of the casing 20; then the connecting plate 70 is fixedly connected to the side of the casing 20 away from the top plate 62, so that the diaphragm assembly
- the first coil 51 and the second coil 53 are energized through the wire 55 to magnetize the diaphragm 21; the first driver 31 and the second driver The magnetic force between the pieces 33 drives the magnetized diaphragm 21 to vibrate and produce sound.
- FIG. 6 is a schematic diagram of a three-dimensional structure of an audio reproduction device 300 according to an embodiment of the present application.
- the present application further provides an audio reproduction device 300 , which includes a casing 301 and the speaker 100 .
- the housing 301 includes an inner cavity and a sound outlet channel 303 communicating with the inner cavity.
- the speaker 100 is disposed in the inner cavity of the housing 301 , and the sound outlet hole 61 of the speaker 100 communicates with the sound outlet channel 303 .
- the sound generated by the speaker 100 enters the sound outlet channel 303 through the sound outlet hole 61 , and then goes out from the sound outlet channel 303 .
- the audio reproduction device 300 further includes a circuit board and a battery 305, the circuit board is electrically connected to the wire 55 and the battery 305, and the battery 305 is used for powering the speaker 100, the circuit board and other electronic devices .
- the audio reproduction device 300 is an earphone
- the casing 301 of the earphone is provided with a sound guide tube along the sound output channel 303
- an ear cap 306 is sleeved on the sound guide tube.
- the audio reproduction device 300 may also be a speaker or the like.
- the speaker 100 in this application can be used in electronic products such as computers, televisions, and mobile phones that need to emit sound.
- FIG. 7 is a schematic cross-sectional structural diagram of a speaker 100 a according to a second embodiment of the present application.
- the structure of the speaker 100a of the second embodiment of the present application is similar to the structure of the speaker 100 of the first embodiment, except that the orthographic projection of the second coil 53 in the second embodiment on the diaphragm 21 It is located in the orthographic projection of the first driving member 31a on the diaphragm 21, that is, the contour of the orthographic projection of the second coil 53 on the diaphragm 21 falls on the diaphragm 21 of the first driving member 31a.
- the first driving member 31a is also a circular cylinder, and the outer diameter of the circular coil is is smaller than the outer diameter of the circular cylinder; a plurality of the second coils 53 are rectangular coils, then the second driving member 31a is a rectangular body, and the length and width of the outer periphery of the rectangular coils are smaller than those of the rectangular coils. the length and width of the rectangle.
- the orthographic projection of the first driving member 31a on the diaphragm 21 is a circle
- the orthographic projection of the second coil 53 on the diaphragm 21 is a circular ring
- the circle Both the circular shape and the circular ring are located in the middle of the diaphragm 21 , and the diameter of the circular shape is greater than the outer diameter of the circular ring.
- the orthographic projection of the first coil 51 on the diaphragm 21 is located within the orthographic projection of the second driving member 65 on the diaphragm 21 .
- the first coil 51 and the second driving member 65 The outer peripheral surface of the first coil 51 is attached to the inner peripheral surface of the side wall 64 of the housing 60 , that is, the outer diameter of the first coil 51 is equal to the outer diameter of the second driving member 65 , and the first coil 51 The inner diameter value of is greater than the inner diameter value of the second driving member 65 .
- the orthographic projection of the first driving member 31a on the diaphragm 21 overlaps with the orthographic projection of the second driving member 65 on the diaphragm 21, that is, the first driving member 31a is on the diaphragm 21.
- the sum of the area of the orthographic projection on the diaphragm 21 and the area of the orthographic projection of the second driving member 65 on the diaphragm 21 is greater than the surface area of the diaphragm 21 . Since the orthographic projection area of the first driving member 31 a on the diaphragm 21 is large, the center of the magnetized diaphragm 21 is subjected to greater force, which can further improve the sensitivity of the diaphragm 21 .
- the orthographic projection of the first driving member 31a on the diaphragm 21 is a circle
- the orthographic projection of the second driving member 65 on the diaphragm 21 is a circular ring.
- the diameter value of the circle is larger than the inner diameter value of the annular shape and smaller than the outer diameter value of the annular shape.
- the first driving member 31a is located in the middle of the annular shape on the circumference of the orthographic projection of the diaphragm 21 .
- FIG. 8 is a schematic cross-sectional structural diagram of a speaker 100 b according to a third embodiment of the present application.
- the structure of the loudspeaker 100b in the third embodiment of the present application is similar to that of the loudspeaker 100 in the first embodiment, the difference is that the first driving member 31b in the third embodiment is a magnet ring, and the first coil 51 covers Located on the outer periphery of the first driving member 31b, the magnet ring is arranged coaxially with the first coil 51, and the magnet ring is close to the middle of the diaphragm 21 in the orthographic projection area of the bottom surface of the diaphragm 21.
- the orthographic projection area of the second coil 53 on the top surface of the diaphragm 21 is close to the middle of the diaphragm 21 , and the orthographic projection area of the magnet ring on the diaphragm 21 coincides with the orthographic projection area of the second coil 53 on the diaphragm 21 .
- the second driving member 33 is close to the periphery of the diaphragm 21 in the orthographic projection area of the top surface of the diaphragm 21
- the first coil 51 is close to the diaphragm 21 in the orthographic projection area of the bottom surface of the diaphragm 21 .
- the orthographic projection area of the second driving member 33 on the diaphragm 21 coincides with the orthographic projection area of the first coil 51 on the diaphragm 21 .
- the distribution of the magnetic force applied by the first driving member 31b and the second driving member 33 to the magnetized diaphragm 21 is relatively uniform, so as to improve the sensitivity of the diaphragm 21, so that the The sound produced by the vibration of the diaphragm 21 is clearer, so that the high-frequency sound is rounded, and the user experience is improved.
- the first driving member 31b is designed as a magnet ring, which can save materials for manufacturing the first driving member 31b, reduce the cost, and reduce the weight of the speaker 100b.
- FIG. 9 is a schematic cross-sectional structural diagram of a speaker 100 c according to a fourth embodiment of the present application.
- the structure of the loudspeaker 100c of the fourth embodiment of the present application is similar to that of the loudspeaker 100 of the first embodiment, except that the first driving member 31c and the first coil 51 in the fourth embodiment are smaller than the second coil. 53 and the second driving member 33 are closer to the side of the first sound outlet 61, that is, the first driving member 31c and the first coil 51 are located on the top side of the diaphragm 21, and the second driving member 33 and The second coil 53 is located on the bottom side of the diaphragm 21 .
- the middle of the first driving member 31c is provided with a through hole 313 which communicates with the first sound outlet hole 61, that is, the first driving member 31c is a magnet ring, the through hole 313 is the inner cavity of the magnet ring, and the The inner cavity of the magnet ring communicates with the first sound outlet hole 61 .
- the magnet ring is arranged around the first sound outlet 61 , the outer peripheral surface of the first coil 51 is attached to the inner peripheral surface of the side wall 64 , and the outer peripheral surface of the second driving member 33 is attached to the outer peripheral surface. on the inner peripheral surface of the side wall 64 .
- the orthographic projection area of the first driving member 31 c on the diaphragm 21 is close to the middle of the diaphragm 21
- the orthographic projection area of the second driving member 33 on the diaphragm 21 is close to the periphery of the diaphragm 21 . Therefore, when the speaker 100c is working, the distribution of the magnetic force applied by the first driving member 31c and the second driving member 33 to the magnetized diaphragm 21 is relatively uniform, so as to improve the sensitivity of the diaphragm 21, so that the The sound produced by the vibration of the diaphragm 21 is clearer, so that the timbre is rounded in high frequency, and the user experience is improved.
- the diameter value of the inner cavity of the second coil 53 is smaller than the diameter value of the through hole 313 of the first driving member 31c, that is, the diameter value of the inner cavity of the second coil 53 becomes smaller, so that all the The area of the orthographic projection of the second coil 53 on the diaphragm 21 is increased, so that the magnetization of the diaphragm 21 can be faster and more uniform. Further, the inner cavity diameter value of the second coil 53 is smaller than the diameter value of the first sound outlet hole 61 , as long as the magnetic force lines can pass through.
- FIG. 10 is a schematic cross-sectional structural diagram of a speaker 100d according to a fifth embodiment of the present application.
- the structure of the loudspeaker 100d of the fifth embodiment of the present application is similar to that of the loudspeaker 100b of the third embodiment, except that the connecting plate 70 in the fifth embodiment is provided with a second sound outlet 74, the said The inner cavity of the second coil 53 communicates with the first sound outlet hole 61, and the through hole 313 of the first driving member 31b communicates with the second sound outlet hole 74, so that the first coil 51 and the first sound outlet hole 74 are connected.
- the diaphragm 21 When the secondary coil 53 is energized, the diaphragm 21 is magnetized and vibrates and emits sound under the driving of the first driving member 31 b and the second driving member 33 , and part of the sound is transmitted from the first sound outlet hole 61 , and another part of the sound is transmitted from the second sound outlet 74, so that the speaker 100d can emit sound from two directions, and the application range of the speaker 100d is improved.
- a second sound outlet hole may be opened on the connecting plate 70, so that the inner cavity of the second coil 53 is connected to the second sound outlet hole, and the A part of the sound emitted by the vibration of the diaphragm 21 is transmitted from the first sound outlet 61, and the other part is transmitted from the second sound outlet 74, so that the speaker can emit sound from two directions and improve the range of speakers.
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Abstract
本申请实施例提供一种扬声器，包括：振膜、第一驱动件、第二驱动件、第一线圈以及第二线圈；所述振膜的第一侧设有第一驱动件和第一线圈，所述振膜的第二侧设有所述第二线圈和所述第二驱动件；所述第一线圈围设于所述第一驱动件外周，所述第二驱动件围设于所述第二线圈的外周；若向所述第一线圈和所述第二线圈通电，则所述振膜被磁化并在所述第一驱动件和所述第二驱动件的驱动下振动发声；所述第一驱动件在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影不重合，所述第一驱动件与所述第二驱动件之间对所述振膜施加的磁力区域分布均匀，以提升所述振膜的灵敏度。本申请还提供一种设有所述扬声器的音频再现装置。
Description
本申请要求于2021年04月15日提交中国专利局、申请号为202110408390.6、申请名称为“扬声器及音频再现装置”的发明专利申请的优先权和申请日为2021年04月15日、申请号为202120776600.2、申请名称为“扬声器及音频再现装置”的实用新型专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请涉及电子器件领域，尤其涉及一种扬声器及设有所述扬声器的音频再现装置。
现有的平衡振膜扬声器包括两个对称设置的磁性驱动件以及振膜，所述振膜被两侧的通电线圈磁化后受该磁性驱动件驱动而振动发声，由于振膜磁化后直接受力，无传输延时，因此平衡振膜单元具有较好的高频瞬态和延展特性。然而，现有的平衡振膜扬声器中振膜受力不均，使得平衡振膜单元的灵敏度欠佳。
发明内容
本申请的目的在于提供一种平面振膜受力均匀的扬声器及设有所述扬声器的音频再现装置。
为了解决上述技术问题，本申请提供了一种扬声器，包括：振膜、第一驱动件、第二驱动件、第一线圈以及第二线圈；所述振膜的第一侧设有第一驱动件和第一线圈，所述振膜的第二侧设有所述第二线圈和所述第二驱动件；所述第一线圈围设于所述第一驱动件外周，所述第二驱动件围设于所述第二线圈的外周；若向所述第一线圈和所述第二线圈通电，则所述振膜被磁化并在所述第一驱动件和所述第二驱动件的驱动下振动发声。
本申请还提供了一种音频再现装置，包括外壳及扬声器，所述壳体包括内腔及连通所述内腔的出音通道，所述扬声器设置于所述外壳的内腔，所述扬声器的出音孔连通所述出音通道。
本申请扬声器的第一线圈套设于第一驱动件外周，第二驱动件套设于第二线圈的外周，因此，所述第一驱动件与所述第二驱动件不对称，即所述第一驱动件在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影不重合；当所述第一线圈与所述第二线圈通电后，使得所述振膜均匀快速磁化，所述第一驱动件与所述第二驱动件对已经磁化的所述振膜直接施加磁力，无传输损耗，无传输延时，使得高频瞬态和延展较好；其次，所述第一驱动件与所述第二驱动件之间对所述振膜施加的磁力区域分布均匀，使所述振膜在所述第一驱动件及所述第二驱动件之间受力分布均匀，以提升所述振膜的灵敏度，使得所述振膜更容易被驱动而振动空气发声，输出更高声压，且音色高频圆润。
为了更清楚地说明本申请实施例的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请一些实施方式，对于本领域普通技术 人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请的第一实施例的扬声器的立体结构件示意图；
图2是图1中的扬声器的另一视角的立体结构示意图；
图3是图1中沿III-III线的剖视图；
图4是图1中的扬声器的立体结构分解示意图；
图5是图4中的扬声器的另一视角的立体结构示意图；
图6是本申请的其中一实施例的音频再现装置的立体结构件示意图；
图7是本申请的第二实施例的扬声器的剖视结构示意图；
图8是本申请的第三实施例的扬声器的剖视结构示意图；
图9是本申请的第四实施例的扬声器的剖视结构示意图；
图10是本申请的第五实施例的扬声器的剖视结构示意图。
一种扬声器，包括：
振膜、第一驱动件、第二驱动件、第一线圈以及第二线圈；
所述振膜的第一侧设有所述第一驱动件和所述第一线圈，所述振膜的第二侧设有所述第二线圈和所述第二驱动件；
其中，所述第一线圈围设于所述第一驱动件的外周，所述第二驱动件围设于所述第二线圈的外周；若向所述第一线圈和所述第二线圈通电，则所述振膜被磁化并在所述第一驱动件和所述第二驱动件的驱动下振动发声。
所述振膜的中心线、所述第一驱动件的中心线、所述第二驱动件的中心线、所述第一线圈的中心线及所述第二线圈的中心线共线。
所述第二线圈的外轮廓在所述振膜上的正投影与所述第一驱动件的外轮廓在所述振膜上的正投影重合；或者所述第二线圈在所述振膜上的正投影位于所述第一驱动件在所述振膜上的正投影内；或者所述第一驱动件在所述振膜上的正投影位于所述第二线圈在所述振膜上的正投影内。
所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重合；或者所述第一线圈在所述振膜上的正投影位于所述第二驱动件在所述振膜上的正投影内；或者所述第二驱动件在所述振膜上的正投影位于所述第一线圈在所述振膜上的正投影内。
所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重叠。
所述第二线圈在所述振膜上的正投影与所述第一驱动件在所述振膜上的正投影重合，所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重合。
所述第一驱动件是圆柱状的磁铁块或磁铁环，所述磁铁块或所述磁铁环的外径值等于或大于所述第二线圈的外径值。
所述第二驱动件为套设于所述第二线圈的磁铁环，所述磁铁环的外径值等于所述第一线圈的外径值，所述磁铁环的内径值等于或小于所述第一线圈的内径值。
所述第一驱动件在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重叠。
所述第一线圈和所述第一驱动件与所述振膜之间均具有第一间隙；所述第二驱动件和所述第二线圈与所述振膜之间均具有第二间隙。
所述的扬声器还包括振膜组件，所述振膜组件还包括第一垫圈及第二垫圈，所述第一垫 圈及所述第二垫圈设置于所述振膜相对两侧面以定位所述振膜，所述第一垫圈位于所述第一间隙内，所述第二垫圈位于所述第二间隙内。
所述第一垫圈贴合于所述振膜的底面并围设于所述振膜的边缘，所述第二垫圈贴合于所述振膜的顶面并围设于所述振膜的边缘。
所述的扬声器包括壳体，所述壳体设有第一出声孔，所述第二线圈的内腔连通所述第一出声孔或所述第一驱动件设有连通所述第一出声孔的通孔。
所述第二线圈和所述第二驱动件较所述第一驱动件和所述第一线圈更靠近所述第一出声孔的一侧，所述第二线圈的内腔围设于所述第一出声孔的周围。
所述第一驱动件和所述第一线圈较所述第二线圈和所述第二驱动件更靠近所述第一出声孔的一侧，所述第一驱动件的通孔围设于所述第一出声孔的周围。
所述壳体包括顶板及围设于所述顶板边缘的侧壁，所述第一出声孔开设于所述顶板，所述侧壁沿轴向开设线槽，所述线槽用于收容电连接于所述第一线圈及所述第二线圈的导线。
所述的扬声器还包括连接板和振膜组件，所述连接板连接于所述壳体以使所述振膜组件、磁性驱动组件及线圈组件定位于所述壳体内。
所述连接板设有第二出声孔，当所述第二线圈的内腔连通所述第一出声孔时，所述第一驱动件的通孔连通所述第二出声孔；当所述第一驱动件的通孔连通所述第一出声孔时，所述第二线圈的内腔连通所述第二出声孔。
所述第二线圈的内腔直径值小于所述第一驱动件的通孔的直径值。
一种音频再现装置，包括外壳及扬声器，所述外壳包括内腔及连通所述内腔的出音通道，所述扬声器设置于所述外壳的内腔，所述扬声器的出音孔连通所述出音通道。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
此外，以下各实施方式的说明是参考附加的图示，用以例示本申请可用以实施的特定实施方式。本申请中所提到的方向用语，例如，“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向，因此，使用的方向用语是为了更好、更清楚地说明及理解本申请，而不是指示或暗指所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“设置在……上”应做广义理解，例如，可以是固定连接，也可以是可拆卸地连接，或者一体地连接；可以是机械连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
请一并参阅图1-图3，图1是本申请的第一实施例的扬声器100的立体结构件示意图；图2是图1中的扬声器100的另一视角的立体结构示意图；图3是图1中沿III-III线的剖视图。本申请的第一实施例中的扬声器100，包括振膜组件20、磁性驱动组件30及线圈组件50，所述振膜组件20包括振膜21，所述磁性驱动组件30包括第一驱动件31及第二驱动件33，所述线圈组件50包括第一线圈51及第二线圈53。所述第一驱动件31配置于所述振膜21的第一侧，所述第一线圈51围设于所述第一驱动件31的外周，即所述振膜21的第一侧设有所述第一驱动件31和所述第一线圈51；所述第二线圈53配置于所述振膜21的第二侧， 所述第二驱动件33围设于所述第二线圈53的外周，即所述振膜21的第二侧设有所述第二线圈53和所述第二驱动件33。本实施例中，所述第一线圈51套设于所述第一驱动件31的外周，所述第二驱动件33套设于所述第二线圈53的外周，所述第一驱动件31在所述振膜21上的正投影位于所述振膜21的中部，所述第二驱动件33在所述振膜21上的正投影位于所述振膜21的周围；所述第二线圈53在所述振膜21上的正投影位于所述振膜21的中部，所述第一线圈51在所述振膜21上的正投影位于所述振膜21的周围；若向所述第一线圈51和所述第二线圈53通电，则所述振膜21被磁化并在所述第一驱动件31和所述第二驱动件33的驱动下振动发声。
本实施例中，所述振膜21为平面振膜，所述平面振膜可以是但不限于超导磁性非晶态超薄合金平膜、多层复合膜。所述振膜21也可以由柔韧性较好的高分子材料制成，因此，使所述扬声器100的音色高频圆润。
本申请提供的扬声器100包括振膜21、位于所述振膜21相对两侧的第一驱动件31及第二驱动件33，以及位于所述振膜21相对两侧的第一线圈51及第二线圈53；所述第一线圈51围设于所述第一驱动件31外周，所述第二驱动件33围设于所述第二线圈53的外周，因此，所述第一驱动件31与所述第二驱动件33不沿所述振膜21对称，即所述第一驱动件31在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影不重合。具体地，所述第一驱动件31在所述振膜21上的正投影位于所述振膜21的中部，所述第二驱动件33在所述振膜21上的正投影位于所述振膜21的周围。当所述第一线圈51与所述第二线圈53通电后，使得所述振膜21均匀快速磁化，所述第一驱动件31与所述第二驱动件33对已经磁化的所述振膜21直接施加磁力，无传输损耗，无传输延时，使得高频瞬态和延展较好；其次，所述第一驱动件31与所述第二驱动件33之间对所述振膜21施加的磁力区域分布均匀，使所述振膜21在所述第一驱动件31及所述第二驱动件33之间受力分布均匀，以提升所述振膜21的灵敏度，使得所述振膜21更容易被驱动而振动空气发声，输出更高声压，且音色高频圆润。
如图3所示，所述振膜21的中心线、所述第一驱动件31的中心线、所述第二驱动件33的中心线、所述第一线圈51的中心线及所述第二线圈53的中心线共线L；不仅能使所述振膜21均匀快速磁化，且能使所述振膜21受到所述第一驱动件31与所述第二驱动件33的驱动力分布更均匀。本实施例中，所述第二线圈53的外轮廓在所述振膜21上的正投影与所述第一驱动件31的外轮廓在所述振膜21上的正投影重合，即所述第二线圈53在所述振膜21上的正投影的外轮廓线与所述第一驱动件31在所述振膜21上的正投影的外轮廓线重合；具体地，若所述第二线圈53为圆形线圈，则所述第一驱动件31也为圆柱体，且所述圆形线圈的外径值等于所述圆柱体的外径值；若干所述第二线圈53为矩形线圈，则所述第二驱动件31为矩形体，且所述矩形线圈的外轮廓的长度和宽度等于所述矩形体的外轮廓的长度和宽度。所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影重合，即所述第一线圈51的轮廓在所述振膜21上的正投影与所述第二驱动件33的轮廓在所述振膜21上的正投影相同；具体地，若所述第一线圈51为圆形线圈，则所述第二驱动件33也为圆环体，且所述环形线圈的外径值及内径值分别等于所述环形体的外径值及内径值；若干所述第一线圈51为矩形线圈，则所述第二驱动件31为矩形环体，且所述矩形线圈外周面的长度和宽度等于所述矩形环体外周面的长度和宽度。本实施例中，所述第二线圈53在所述振膜21上的正投影与所述第一驱动件31在所述振膜21上的正投影均位于所述振膜21的中部位置；所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上 的正投影均位于所述振膜21的周围；因此，所述第一驱动件31和所述第二驱动件33能使磁化后的振膜21受力分布均匀，以提升所述振膜21的灵敏度。
在其他实施例中，所述第二线圈53在所述振膜21上的正投影可以位于所述第一驱动件31在所述振膜21上的正投影内，所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影重合；或者所述第一线圈51在所述振膜21上的正投影位于所述第二驱动件33在所述振膜21上的正投影内；或者所述第二驱动件33在所述振膜21上的正投影位于所述第一线圈51在所述振膜21上的正投影内；或者所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影重叠。
在其他实施例中，所述第一驱动件31在所述振膜21上的正投影也可以位于所述第二线圈53在所述振膜21上的正投影内，所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影重合；或者所述第一线圈51在所述振膜21上的正投影位于所述第二驱动件33在所述振膜21上的正投影内；或者所述第二驱动件33在所述振膜21上的正投影位于所述第一线圈51在所述振膜21上的正投影内；或者所述第一线圈51在所述振膜21上的正投影与所述第二驱动件33在所述振膜21上的正投影重叠。
请一并参阅图3至图5，图4是图1中的扬声器100的立体结构分解示意图；图5是图4中的扬声器100的另一视角的立体结构示意图。本实施例中，所述第一线圈51及第二线圈53均为圆形线圈，所述第一驱动件31为圆柱状的磁铁块，所述第二驱动件33为圆形的磁铁环。所述第一驱动件31在所述振膜21上的正投影为圆形，所述第二线圈53在所述振膜21上的正投影为圆环形，所述圆形与所述圆环形均位于所述振膜21的中部，且所述圆形的周边与所述圆环形的外周边重合，即所述圆形的直径值等于所述圆环形的外径值；所述第一线圈51与所述第二驱动件33在所述振膜21上的正投影均为圆环形，两个所述圆环形均位于所述振膜21的周围且重合，即两个圆环形的外径值及内径值均相等。
优选地，所述第一驱动件31在所述振膜21上的正投影的面积与所述第二驱动件33在所述振膜21上的正投影的面积之和等于所述振膜21的表面积，进一步使磁化后的振膜21受力分布更均匀；所述第一线圈51在所述振膜21上的正投影的面积与所述第二线圈53在所述振膜21上的正投影的面积之和等于所述振膜21的表面积，进一步使所述振膜21的磁化更均匀。
如图3所示，所述第一驱动件31和所述第一线圈51位于所述振膜21的第一侧，所述第一驱动件31及所述第一线圈51均与所述振膜21之间具有第一间隙211。所述第二驱动件33和所述第二线圈53位于所述振膜21相对的第二侧，所述第二驱动件33及所述第二线圈53均与所述振膜21之间具有第二间隙213。当所述振膜21被所述第二线圈53及所述第一线圈51磁化后，所述振膜21在所述第一驱动件31与所述第二驱动件33之间的磁力驱动下在所述第一间隙211及所述第二间隙213内振动，以产生声音。
进一步地，所述振膜21呈圆形状，所述第一驱动件31的轴线、所述第二驱动件33的轴线、所述第二线圈53的轴线、所述第一线圈51轴线及所述振膜21的轴线共线，即所述第一驱动件31的轴线、所述第二驱动件33的轴线、所述第二线圈53的轴线、所述第一线圈51轴线及所述振膜21的轴线分别为各自的中心线。所述第二驱动件33套设于所述第二线圈53外周，使得所述第二驱动件33与所述第二线圈53在所述振膜21上的正投影不重叠；所述第一线圈51套设于第一驱动件31外周，使得所述第一驱动件31与所述第一线圈51在所述振膜21上的正投影不重叠。所述第二驱动件33与所述第二线圈53在所述振膜21上的正投影同中心，所述第一驱动件31与所述第一线圈51在所述振膜21上的正投影同中心。所述第二驱动件33在所述振膜21上的正投影区域与所述第一线圈51在所述振膜21上的正投影区域 对应，所述第一驱动件31在所述振膜21上的正投影区域与所述第二线圈53在所述振膜21上的正投影区域对应。所述轴向指平行于所述第二线圈53的轴线方向，所述轴向垂直于所述振膜21的顶面；所述顶侧指与所述扬声器100的出声孔的朝向一致的一侧，所述底侧指与所述扬声器100的出声孔的朝向背离的一侧。
优选地，所述第二线圈53在所述振膜21上的正投影的外周边与所述第二驱动件33在所述振膜21上的正投影的内周边重合，所述第一线圈51在所述振膜21上的正投影的内周边与所述第一驱动件31在所述振膜21上的正投影的外周边重合。
在其他实施例中，所述第二线圈53在所述振膜21上的正投影的外周边与所述第二驱动件33在所述振膜21上的正投影的内周边间隔，所述第一线圈51在所述振膜21上的正投影的内周边与所述第一驱动件31在所述振膜21上的正投影的外周边间隔。
所述扬声器100还包括壳体60，所述壳体60用于收容所述振膜组件20、所述磁性驱动组件30及所述线圈组件50，所述壳体60沿轴向设有第一出声孔61。所述第二驱动件33和所述第二线圈53较所述第一线圈51和所述第一驱动件31更靠近所述第一出声孔61的一侧，即所述第二驱动件33和所述第二线圈53位于所述振膜21的顶侧，所述第一驱动件31和所述第一线圈51位于所述振膜21的底侧；所述第二线圈53的内腔连通所述第一出声孔61。优选地，所述第二线圈53的内腔围设于所述第一出声孔61的周围。
具体地，所述壳体60包括顶板62及围设于所述顶板62边缘的侧壁64，所述顶板62与所述侧壁64围成收容空间65，所述收容空间65用于收容所述振膜组件20、磁性驱动组件30及线圈组件50。所述第一出声孔61开设于所述顶板62，所述侧壁64沿轴向开设线槽66，所述线槽66用于收容电连接于所述第一线圈51及第二线圈53的导线55。本实施例中，所述顶板62为圆形板，所述第一出声孔61位于所述圆形板的中部位置；所述侧壁64是围设于所述顶板62边缘的圆环结构。
如图3-图5所示，所述振膜组件20还包括第一垫圈23及第二垫圈25，所述第一垫圈23及所述第二垫圈25设置于所述振膜21相对两侧面以定位所述振膜21，所述第一垫圈23位于所述第一间隙211内，所述第二垫圈25位于所述第二间隙213内。所述第一垫圈23及所述第二垫圈25的内径值均大于所述第二驱动件33的内径值，所述第一垫圈23及所述第二垫圈25的外径值均小于或等于所述第二驱动件33的外径值。本实施例中，所述振膜21为圆形膜，所述第一垫圈23贴合于所述振膜21的底面并围设于所述振膜21的边缘，所述第二垫圈25贴合于所述振膜21的顶面并围设于所述振膜21的边缘。
本实施例中，所述第二线圈53容置于所述第二驱动件33的内腔中，所述第二线圈53围设于所述第一出声孔61的周围，所述第二线圈53正对所述振膜21顶面的中部区域，所述第二驱动件33正对所述振膜21顶面的周围区域；所述第一线圈51套设于所述磁铁块外，所述第一驱动件31正对所述振膜21底面的中部区域，所述第一线圈51正对所述振膜21底面的周围区域；所述磁铁块、所述振膜21及所述第二线圈53共轴线。由于所述磁铁块的直径值较大，使得所述磁铁块的磁力较大，且所述磁铁块正对所述振膜21的中部区域，所述第二驱动件33正对所述振膜21的周围区域。在所述扬声器100工作时，所述第一驱动件31及所述第二驱动件33对已磁化的振膜21施加的磁力分布均匀，且所述磁力较多地分布在所述振膜21的中部区域，力矩较大，使得所述振膜21更容易被驱动而振动，所述振膜21的振动以带动其周围的空气振动发声，以输出更高声压。
具体地，所述第二驱动件33套设于所述第二线圈53外，并层叠于所述振膜组件20的顶侧；所述第一线圈51套设于所述第一驱动件31外，并层叠于所述振膜组件20的底侧。所述 第一垫圈23被夹持于所述第一线圈51与所述振膜21之间，所述第二垫圈25被夹持于所述第二驱动件33与所述振膜21之间。
所述扬声器100还包括连接板70，所述连接板70连接于所述壳体60以使所述振膜组件20、磁性驱动组件30及线圈组件50定位于所述壳体60内。所述连接板70开设有缺口72，所述缺口72用于导线55的穿插。
请一并参阅图1-图5，组装所述扬声器100时，将所述第二驱动件33套接于所述第二线圈53外，并将两者层叠于所述振膜组件20的顶侧；将所述第一线圈51套接于所述第一驱动件31外，并将两者层叠于所述振膜组件20的底侧；将所述导线55电连接于所述第一线圈51及所述第二线圈53；将所述振膜组件20、所述磁性驱动组件30及所述线圈组件50的整体容置于所述壳体60的收容空间65内，且使所述第二驱动件33和所述第二线圈53靠近所述顶板62，所述第二驱动件33和所述第一线圈51的外周面均紧贴所述壳体60的内周面，所述导线55容置于所述壳体20的线槽66内；再将所述连接板70固定连接于所述壳体20远离所述顶板62的一侧，以使所述振膜组件20、所述磁性驱动组件30及所述线圈组件50定位于所述壳体60内，所述导线55从所述缺口72穿出。此时，所述振膜21、所述第一驱动件31、所述第二驱动件33、所述第一线圈51、所述第二线圈53、所述第一垫圈23及第二垫圈25共轴线；所述第一驱动件31和所述第二线圈53在所述振膜21上的正投影均位于所述振膜21的中部，所述第二驱动件33和所述第一线圈51在所述振膜21上的正投影均位于所述振膜21的周围。
使用所述扬声器100时，通过所述导线55给所述第一线圈51及所述第二线圈53通电，以使所述振膜21磁化；所述第一驱动件31与所述第二驱动件33之间的磁力驱动磁化后的振膜21振动而发声。
请参阅图6，图6是本申请的其中一实施例的音频再现装置300的立体结构件示意图，本申请还提供一种音频再现装置300，其包括壳体301及所述扬声器100，所述壳体301包括内腔及连通所述内腔的出音通道303，所述扬声器100设置于所述壳体301的内腔，所述扬声器100的出音孔61连通所述出音通道303。所述扬声器100产生的声音经所述出音孔61进入所述出音通道303，再从所述出音通道303传出。
所述音频再现装置300还包括电路板及电池305，所述电路板电连接于所述导线55及所述电池305，所述电池305用于给扬声器100、所述电路板及其他电子器件供电。
在本实施例中，所述音频再现装置300是耳机，所述耳机的壳体301沿所述出音通道303设有导音管，所述导音管上套设有耳帽306。当所述耳机通过耳帽306插入用户的耳道内时，由于所述扬声器100的振膜21受力分布均匀，以提升所述振膜21的灵敏度，使得所述振膜21被驱动而推动空气发声，以使声音更清晰，音色高频圆润，提升了用户体验。
在其他实施例中，所述音频再现装置300还可以是音箱等。本申请中的所述扬声器100可以运用于电脑、电视、手机等需要发声的电子产品中。
请参阅图7，图7是本申请的第二实施例的扬声器100a的剖视结构示意图。本申请的第二实施例的扬声器100a的结构与第一实施例中的扬声器100的结构相似，不同之处在于：第二实施例中的第二线圈53在所述振膜21上的正投影位于第一驱动件31a在所述振膜21上的正投影内，即所述第二线圈53在所述振膜21上的正投影的轮廓落于所述第一驱动件31a在所述振膜21上的正投影的轮廓内；具体地，若所述第二线圈53为圆形线圈，则所述第一驱动件31a也为圆形柱体，且所述圆形线圈的外径值小于所述圆形柱体的外径值；若干所述第二线圈53为矩形线圈，则所述第二驱动件31a为矩形体，且所述矩形线圈的外周边的长度和 宽度少于所述矩形体的长度和宽度。本实施例中，所述第一驱动件31a在所述振膜21上的正投影为圆形，所述第二线圈53在所述振膜21上的正投影为圆环形，所述圆形与所述圆环形均位于所述振膜21的中部，所述圆形的直径值大于所述圆环形的外径值。所述第一线圈51在所述振膜21上的正投影位于所述第二驱动件65在所述振膜21上的正投影内，所述第一线圈51和所述第二驱动件65的外周面贴合于所述壳体60的侧壁64的内周面，即所述第一线圈51的外径值等于所述第二驱动件65的外径值，所述第一线圈51的内径值大于所述第二驱动件65的内径值。
所述第一驱动件31a在所述振膜21上的正投影与所述第二驱动件65在所述振膜21上的正投影重叠，即所述第一驱动件31a在所述振膜21上的正投影的面积与第二驱动件65在所述振膜21上的正投影的面积之和大于所述振膜21的表面积。由于所述第一驱动件31a在所述振膜21上的正投影面积较大，因此，磁化后的振膜21的中部受力更大，能进一步提升所述振膜21的灵敏度。
本实施例中，所述第一驱动件31a在所述振膜21上的正投影为圆形，所述第二驱动件65在所述振膜21上的正投影为圆环形，所述圆形的直径值大于所述圆环形的内径值而小于所述圆环形的外径值。优选地，所述第一驱动件31a在所述振膜21的正投影的圆周边位于所述圆环形的中部。
请参阅图8，图8是本申请的第三实施例的扬声器100b的剖视结构示意图。本申请的第三实施例的扬声器100b的结构与第一实施例中的扬声器100的结构相似，不同之处在于：第三实施例中的第一驱动件31b是磁铁环，第一线圈51套设于所述第一驱动件31b外周，所述磁铁环与所述第一线圈51同轴线设置，所述磁铁环在振膜21底面的正投影区域靠近所述振膜21的中部，第二线圈53在振膜21顶面的正投影区域靠近所述振膜21的中部，且所述磁铁环在振膜21的正投影区域与第二线圈53在振膜21的正投影区域重合。所述第二驱动件33在振膜21顶面的正投影区域靠近所述振膜21的周围，所述第一线圈51在所述振膜21底面的正投影区域靠近所述振膜21的周围，且所述第二驱动件33在振膜21的正投影区域与所述第一线圈51在所述振膜21的正投影区域重合。在所述扬声器100a工作时，所述第一驱动件31b及所述第二驱动件33对已磁化的振膜21施加的磁力分布比较均匀，以提升所述振膜21的灵敏度，使得所述振膜21振动发出的声音更清晰，使音色高频圆润，提升了用户体验。另外，所述第一驱动件31b设计成磁铁环，能节省制造所述第一驱动件31b的材料，降低成本，且能减轻所述扬声器100b的重量。
请参阅图9，图9是本申请的第四实施例的扬声器100c的剖视结构示意图。本申请的第四实施例的扬声器100c的结构与第一实施例中的扬声器100的结构相似，不同之处在于：第四实施例中的第一驱动件31c和第一线圈51较第二线圈53和第二驱动件33更靠近第一出声孔61的一侧，即所述第一驱动件31c和所述第一线圈51位于所述振膜21的顶侧，第二驱动件33和所述第二线圈53位于所述振膜21的底侧。第一驱动件31c的中部设有连通所述第一出声孔61的通孔313，即第一驱动件31c为磁铁环，所述通孔313即为所述磁铁环的内腔，所述磁铁环的内腔连通所述第一出声孔61。所述磁铁环围设于所述第一出声孔61的周围，所述第一线圈51的外周面贴合于所述侧壁64的内周面，第二驱动件33的外周面贴合于所述侧壁64的内周面。所述第一驱动件31c在振膜21上的正投影区域靠近所述振膜21的中部，所述第二驱动件33在振膜21上的正投影区域靠近所述振膜21的周围。因此，在所述扬声器100c工作时，所述第一驱动件31c及所述第二驱动件33对已磁化的振膜21施加的磁力分布比较均匀，以提升所述振膜21的灵敏度，使得所述振膜21振动发出的声音更清晰，使音色 高频圆润，提升了用户体验。
在一些实施例中，所述第二线圈53的内腔直径值小于所述第一驱动件31c的通孔313的直径值，即所述第二线圈53的内腔直径值变小，使所述第二线圈53在所述振膜21上的正投影的面积增大，能使振膜21的磁化更快速、更均匀。进一步的，所述第二线圈53的内腔直径值小于所述第一出声孔61的直径值，只需能满足磁力线穿过即可。
请参阅图10，图10是本申请的第五实施例的扬声器100d的剖视结构示意图。本申请的第五实施例的扬声器100d的结构与第三实施例中的扬声器100b的结构相似，不同之处在于：第五实施例中的连接板70设有第二出声孔74，所述第二线圈53的内腔连通所述第一出声孔61，所述第一驱动件31b的通孔313连通所述第二出声孔74，从而在所述第一线圈51和所述第二线圈53通电时，则所述振膜21被磁化并在所述第一驱动件31b和所述第二驱动件33的驱动下振动发声，一部分声音从所述第一出声孔61传出，另一部分声音从所述第二出声孔74传出，使所述扬声器100d能从两个方向进行发声，提升所述扬声器100d的运用范围。
在其他实施例中，也可以在第四实施例中的基础上在所述连接板70上开设第二出声孔，使第二线圈53的内腔连通所述第二出声孔，所述振膜21振动发出的声音，一部分从所述第一出声孔61传出，另一部分从所述第二出声孔74传出，使所述扬声器能从两个方向进行发声，提升所述扬声器的运用范围。
以上是本申请实施例的实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请实施例原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。
Claims (20)
- 一种扬声器，其特征在于，包括：振膜、第一驱动件、第二驱动件、第一线圈以及第二线圈；所述振膜的第一侧设有所述第一驱动件和所述第一线圈，所述振膜的第二侧设有所述第二线圈和所述第二驱动件；其中，所述第一线圈围设于所述第一驱动件的外周，所述第二驱动件围设于所述第二线圈的外周；若向所述第一线圈和所述第二线圈通电，则所述振膜被磁化并在所述第一驱动件和所述第二驱动件的驱动下振动发声。
- 根据权利要求1所述的扬声器，其特征在于，所述振膜的中心线、所述第一驱动件的中心线、所述第二驱动件的中心线、所述第一线圈的中心线及所述第二线圈的中心线共线。
- 根据权利要求2所述的扬声器，其特征在于，所述第二线圈的外轮廓在所述振膜上的正投影与所述第一驱动件的外轮廓在所述振膜上的正投影重合；或者所述第二线圈在所述振膜上的正投影位于所述第一驱动件在所述振膜上的正投影内；或者所述第一驱动件在所述振膜上的正投影位于所述第二线圈在所述振膜上的正投影内。
- 根据权利要求2所述的扬声器，其特征在于，所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重合；或者所述第一线圈在所述振膜上的正投影位于所述第二驱动件在所述振膜上的正投影内；或者所述第二驱动件在所述振膜上的正投影位于所述第一线圈在所述振膜上的正投影内。
- 根据权利要求2所述的扬声器，其特征在于，所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重叠。
- 根据权利要求2所述的扬声器，其特征在于，所述第二线圈在所述振膜上的正投影与所述第一驱动件在所述振膜上的正投影重合，所述第一线圈在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重合。
- 根据权利要求2所述的扬声器，其特征在于，所述第一驱动件是圆柱状的磁铁块或磁铁环，所述磁铁块或所述磁铁环的外径值等于或大于所述第二线圈的外径值。
- 根据权利要求2所述的扬声器，其特征在于，所述第二驱动件为套设于所述第二线圈的磁铁环，所述磁铁环的外径值等于所述第一线圈的外径值，所述磁铁环的内径值等于或小于所述第一线圈的内径值。
- 根据权利要求2所述的扬声器，其特征在于，所述第一驱动件在所述振膜上的正投影与所述第二驱动件在所述振膜上的正投影重叠。
- 根据权利要求1所述的扬声器，其特征在于，所述第一线圈和所述第一驱动件与所述振膜之间均具有第一间隙；所述第二驱动件和所述第二线圈与所述振膜之间均具有第二间隙。
- 根据权利要求10所述的扬声器，其特征在于，还包括振膜组件，所述振膜组件还包括第一垫圈及第二垫圈，所述第一垫圈及所述第二垫圈设置于所述振膜相对两侧面以定位所述振膜，所述第一垫圈位于所述第一间隙内，所述第二垫圈位于所述第二间隙内。
- 根据权利要求11所述的扬声器，其特征在于，所述第一垫圈贴合于所述振膜的底面并围设于所述振膜的边缘，所述第二垫圈贴合于所述振膜的顶面并围设于所述振膜的边缘。
- 根据权利要求1所述的扬声器，其特征在于，包括壳体，所述壳体设有第一出声孔，所述第二线圈的内腔连通所述第一出声孔或所述第一驱动件设有连通所述第一出声孔的通孔。
- 根据权利要求13所述的扬声器，其特征在于，所述第二线圈和所述第二驱动件较所述第一驱动件和所述第一线圈更靠近所述第一出声孔的一侧，所述第二线圈的内腔围设于所述第 一出声孔的周围。
- 根据权利要求13所述的扬声器，其特征在于，所述第一驱动件和所述第一线圈较所述第二线圈和所述第二驱动件更靠近所述第一出声孔的一侧，所述第一驱动件的通孔围设于所述第一出声孔的周围。
- 根据权利要求13所述的扬声器，其特征在于，所述壳体包括顶板及围设于所述顶板边缘的侧壁，所述第一出声孔开设于所述顶板，所述侧壁沿轴向开设线槽，所述线槽用于收容电连接于所述第一线圈及所述第二线圈的导线。
- 根据权利要求13所述的扬声器，其特征在于，还包括连接板和振膜组件，所述连接板连接于所述壳体以使所述振膜组件、磁性驱动组件及线圈组件定位于所述壳体内。
- 根据权利要求17所述的扬声器，其特征在于，所述连接板设有第二出声孔，当所述第二线圈的内腔连通所述第一出声孔时，所述第一驱动件的通孔连通所述第二出声孔；当所述第一驱动件的通孔连通所述第一出声孔时，所述第二线圈的内腔连通所述第二出声孔。
- 根据权利要求18所述的扬声器，其特征在于，所述第二线圈的内腔直径值小于所述第一驱动件的通孔的直径值。
- 一种音频再现装置，其特征在于，包括外壳及如权利要求1-19任意一项所述的扬声器，所述外壳包括内腔及连通所述内腔的出音通道，所述扬声器设置于所述外壳的内腔，所述扬声器的出音孔连通所述出音通道。
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