CN115226008A - Speakers and audio reproduction devices - Google Patents

Abstract

The present invention provides a loudspeaker, comprising: a diaphragm, a first driving part, a second driving part, a first coil and a second coil; the first side of the diaphragm is provided with a first driving part and a first coil, so The second side of the diaphragm is provided with the second coil and the second driving member; the first coil is surrounded by the outer circumference of the first driving member, and the second driving member is surrounded by the first driving member. The outer circumference of the second coil; if the first coil and the second coil are energized, the diaphragm is magnetized and vibrated and sounded under the driving of the first driving member and the second driving member; 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, and the relationship between the first driving member and the second driving member is The magnetic force applied by the diaphragm is uniformly distributed, so as to improve the sensitivity of the diaphragm. The present invention also provides an audio reproduction device provided with the speaker.

Description

Speakers and audio reproduction devices

technical field

The present invention relates to the field of electronic devices, in particular to a speaker and an audio reproduction device provided with the speaker.

Background technique

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.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a loudspeaker with uniform force on a plane diaphragm and an audio reproduction device provided with the loudspeaker.

In order to solve the above technical problems, the present invention provides 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 invention also provides an audio reproduction device, which includes 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 invention 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, so that the diaphragm is more easily driven to vibrate the air to produce sound, output higher sound pressure, and the timbre is rounded in high frequency.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the implementation manner. As far as technical personnel are concerned, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic diagram of a three-dimensional structural component of a speaker according to a first embodiment of the present invention;

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;

6 is a schematic diagram of a three-dimensional structure of an audio reproduction device according to an embodiment of the present invention;

7 is a schematic cross-sectional structure diagram of a speaker according to a second embodiment of the present invention;

8 is a schematic cross-sectional structural diagram of a speaker according to a third embodiment of the present invention;

9 is a schematic cross-sectional structure diagram of a speaker according to a fourth embodiment of the present invention;

10 is a schematic cross-sectional structural diagram of a speaker according to a fifth embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Furthermore, the following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. Directional terms mentioned in the present invention, such as "top", "bottom", "front", "rear", "left", "right", "inner", "outer", "side", etc., only Reference is made to the directions of the accompanying drawings, therefore, the directional terms used are for better and clearer description and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, in a specific orientation construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, 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 elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Please refer to FIGS. 1 to 3 together. FIG. 1 is a schematic diagram of a three-dimensional structure of the speaker 100 according to the first embodiment of the present invention; 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 invention includes a diaphragm assembly 20 , a magnetic drive assembly 30 and a coil assembly 50 , the diaphragm assembly 20 includes a diaphragm 21 , and 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 . In this embodiment, 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 , and 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; When a coil 51 and the second coil 53 are energized, the diaphragm 21 is magnetized and vibrates and produces sound under the driving of the first driving member 31 and the second driving member 33 .

In this embodiment, 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 invention 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 . Two coils 53; the first coil 51 is surrounded by the outer circumference of the first driving member 31, and the second driving member 33 is surrounded by the outer circumference of the second coil 53. Therefore, the first driving member 31 Not symmetrical with the second driving member 33 along the diaphragm 21 , that is, the orthographic projection of the first driving member 31 on the diaphragm 21 and the second driving member 33 on the diaphragm 21 The orthographic projections are not coincident. Specifically, the orthographic projection of the first driving member 31 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 in the diaphragm 21 . around the membrane 21 . When the first coil 51 and the second coil 53 are energized, the diaphragm 21 is uniformly and rapidly magnetized, and the first driving member 31 and the second driving member 33 are connected to the already magnetized diaphragm. 21 Directly apply magnetic force, no transmission loss, no transmission delay, so that the high-frequency transient and extension are better; secondly, the diaphragm 21 is applied between the first driving member 31 and the second driving member 33. 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.

As shown in FIG. 3 , 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. In this embodiment, 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. In this embodiment, 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 .

In other embodiments, 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 .

In other embodiments, 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 .

Please refer to FIG. 3 to FIG. 5 together. 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. In this embodiment, the first coil 51 and the second coil 53 are both circular coils, the first driving member 31 is a cylindrical magnet block, and 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, and 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.

Preferably, 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.

As shown in FIG. 3 , 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 . There are first gaps 211 between the films 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.

Further, 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 .

Preferably, 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 .

In other embodiments, 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 , and 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 . Preferably, the inner cavity of the second coil 53 is arranged around the first sound outlet hole 61 .

Specifically, 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. In this embodiment, 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 .

As shown in FIGS. 3-5 , 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 . In order to position the diaphragm 21 , the first washer 23 is located in the first gap 211 , and 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 , and 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 . In this embodiment, 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 .

In this embodiment, 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. Because the diameter of the magnet block is larger, 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. When the speaker 100 is working, 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.

Specifically, 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 , and 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 .

Please refer to FIGS. 1 to 5 together. When assembling the speaker 100 , 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 20, the The magnetic drive assembly 30 and the coil assembly 50 are positioned in the housing 60 , and the wires 55 pass through the notch 72 . At this time, the diaphragm 21 , the first driving member 31 , the second driving member 33 , the first coil 51 , the second coil 53 , the first washer 23 and the second washer 25 Coaxial; the orthographic projections of the first driving member 31 and the second coil 53 on the diaphragm 21 are both located in the middle of the diaphragm 21 , the second driving member 33 and the first coil The orthographic projections of 51 on the diaphragm 21 are all located around the diaphragm 21 .

When using the loudspeaker 100, 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.

Please refer to FIG. 6 . FIG. 6 is a schematic diagram of a three-dimensional structure of an audio reproduction device 300 according to an embodiment of the present invention. The present invention 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 .

In this embodiment, the audio reproduction device 300 is an earphone, and the casing 301 of the earphone is provided with a sound guide tube along the sound output channel 303 , and an ear cap 306 is sleeved on the sound guide tube. When the earphone is inserted into the user's ear canal through the ear cap 306, the diaphragm 21 of the speaker 100 is evenly distributed to the force, so as to improve the sensitivity of the diaphragm 21, so that the diaphragm 21 is driven to push the air The sound is made to make the sound clearer, the timbre is rounded in high frequency, and the user experience is improved.

In other embodiments, the audio reproduction device 300 may also be a speaker or the like. The speaker 100 in the present invention can be used in electronic products such as computers, televisions, and mobile phones that need to emit sound.

Please refer to FIG. 7 , which is a schematic cross-sectional structural diagram of a speaker 100 a according to a second embodiment of the present invention. The structure of the speaker 100a of the second embodiment of the present invention is similar to that 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. In the contour of the orthographic projection on the film 21; specifically, if the second coil 53 is a circular coil, 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. In this embodiment, 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, and 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 .

In this embodiment, the orthographic projection of the first driving member 31a on the diaphragm 21 is a circle, and 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. Preferably, 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 .

Please refer to FIG. 8 , which is a schematic cross-sectional structural diagram of a speaker 100 b according to a third embodiment of the present invention. The structure of the loudspeaker 100b in the third embodiment of the present invention is similar to that of the loudspeaker 100 in the first embodiment, except that the first driving member 31b in the third embodiment is a magnet ring, and the first coil 51 is sleeved 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 , and the first coil 51 is close to the diaphragm 21 in the orthographic projection area of the bottom surface of the diaphragm 21 . and 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 . When the speaker 100a is working, 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. In addition, 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.

Please refer to FIG. 9. FIG. 9 is a schematic cross-sectional structural diagram of a speaker 100c according to a fourth embodiment of the present invention. The structure of the loudspeaker 100c of the fourth embodiment of the present invention 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 hole 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 , and 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.

In some embodiments, 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.

Please refer to FIG. 10. FIG. 10 is a schematic cross-sectional structural diagram of a speaker 100d according to a fifth embodiment of the present invention. The structure of the loudspeaker 100d of the fifth embodiment of the present invention 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. 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.

In other embodiments, on the basis of the fourth embodiment, 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.

The above are the implementations of the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the embodiments of the present invention, several improvements and modifications can also be made. These improvements and modifications are also It is regarded as the protection scope of the present invention.

Claims (16)

1. a loudspeaker, is characterized in that, comprises: 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; Wherein, the first coil is arranged around the outer circumference of the first driving member, and 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. 2 . The loudspeaker according to claim 1 , wherein the center line of the diaphragm, the center line of the first driver, the center line of the second driver, and the center of the first coil. 3 . The line and the center line of the second coil are collinear. 3 . The loudspeaker according to claim 2 , wherein the orthographic projection of the outer contour of the second coil on the vibrating membrane is the same as the orthographic projection of the outer contour of the first driving member on the vibrating membrane 3 . Projection coincidence; or The orthographic projection of the second coil on the vibrating membrane is located within the orthographic projection of the first driving member on the vibrating membrane; or the orthographic projection of the first driving member on the vibrating membrane is located in the The second coil is in the orthographic projection on the diaphragm. 4 . The loudspeaker according to claim 2 , wherein the orthographic projection of the first coil on the diaphragm coincides with the orthographic projection of the second driving member on the diaphragm; or the The orthographic projection of the first coil on the diaphragm is located within 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 first A coil is in the orthographic projection on the diaphragm. 5 . The loudspeaker according to claim 2 , wherein the orthographic projection of the first coil on the diaphragm overlaps with the orthographic projection of the second driving member on the diaphragm. 6 . 6. The loudspeaker according to claim 2, wherein 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 first The orthographic projection of a coil on the diaphragm coincides with the orthographic projection of the second driving member on the diaphragm. 7 . The loudspeaker according to claim 2 , wherein 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 that of the first driving member. 8 . The value of the outer diameter of the secondary coil. 8 . The loudspeaker according to claim 2 , wherein the second driving member is a magnet ring sleeved on the second coil, and the outer diameter of the magnet ring is equal to the outer diameter of the first coil. 9 . The inner diameter value of the magnet ring is equal to or smaller than the inner diameter value of the first coil. 9 . The loudspeaker according to claim 1 , wherein a first gap is provided between the first coil, the first driving member and the diaphragm; the second driving member and the first There is a second gap between the two coils and the diaphragm. 10 . The loudspeaker according to claim 9 , wherein the diaphragm assembly further comprises a first washer and a second washer, and the first washer and the second washer are disposed on opposite sides of the diaphragm. 11 . To position the diaphragm, the first washer is located in the first gap, and the second washer is located in the second gap. 11. The loudspeaker according to claim 1, characterized in that it comprises a casing, the casing is provided with a first sound outlet hole, and the inner cavity of the second coil communicates with the first sound outlet hole or the The first driving member is provided with a through hole communicating with the first sound outlet hole. 12 . The loudspeaker according to claim 11 , wherein the second coil and the second driving member are closer to the first sound outlet than the first driving member and the first coil. 13 . On one side, the inner cavity of the second coil is arranged around the first sound outlet hole. 13. The loudspeaker according to claim 11, wherein the first driving member and the first coil are closer to the first sound outlet than the second coil and the second driving member. On one side, the through hole of the first driving member is arranged around the first sound outlet hole. 14. The loudspeaker according to claim 11, further comprising a connecting plate connected to the housing so that the diaphragm assembly, the magnetic drive assembly and the coil assembly are positioned in the housing . 15 . The speaker according to claim 14 , wherein the connecting plate is provided with a second sound outlet hole, and when the inner cavity of the second coil communicates with the first sound outlet hole, the first sound outlet hole is 15 . The through hole of the driving member communicates with the second sound outlet; when the through hole of the first driving member communicates with the first sound outlet, the inner cavity of the second coil communicates with the second sound outlet . 16. An audio reproduction device, characterized by comprising a casing and the speaker according to any one of claims 1 to 15, the casing comprising an inner cavity and a sound outlet channel communicating with the inner cavity, and the speaker is provided with In the inner cavity of the casing, the sound outlet hole of the speaker communicates with the sound outlet channel.

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