WO2023088070A1 - Sound production unit and sound device - Google Patents

Abstract

Provided in the embodiments of the present application are a sound production unit and a sound device. The sound production unit comprises: a vibrating diaphragm, which is of a first structure, wherein the first structure has at least one sound production cavity, the sound production cavity has an opening, and the vibrating diaphragm is provided with a plurality of magnetic pole corresponding areas and an energization circuit; and a plurality of magnets, which are arranged as a second structure matching the first structure and are respectively arranged corresponding to the magnetic pole corresponding areas, wherein the energization circuit is located between two adjacent magnets, which face the vibrating diaphragm and have opposite magnetic poles. In the technical solution provided in the embodiments of the present application, when an energized vibrating diaphragm vibrates under the action of a magnetic field of a magnet, the vibrating diaphragm vibrates toward the inside of a sound production cavity and the outside of the sound production cavity, and sound waves before and after the vibrating diaphragm cannot be counteracted, such that low sounds are not lost, and gamut coverage can be realized by using a single sound production element having a relatively small size.

Description

Pronunciation unit and audio equipment

cross reference

This application cites the Chinese patent applications in the table below, which are fully incorporated into this application by reference.

filing date	Application Number	patent name
2021-11-16	2021113565109	Pronunciation unit and audio equipment
2021-11-16	2021228078996	Pronunciation unit and audio equipment

technical field

The present application relates to the technical field of sounding equipment, in particular to a sounding unit and audio equipment.

Background technique

Traditional speakers are generally designed to drive the paper cone to vibrate through the conductive coil in the magnetic field to generate sound, and convert the current into a sound signal. However, the paper cone consumes a lot of energy to counteract the inertia during the vibration process, so the ability of the paper cone is limited for signals with higher vibration frequencies, so this property makes the design more suitable for bass signals.

In the prior art, multiple sounding components are used to divide the frequency by a frequency divider to obtain a speaker that can cover a wider range. However, the complexity and inconsistency of the material structure of different sounding components make the final sound structure complex, and Audio curves aren't perfect. Moreover, traditional audio systems rely on large cabinets to better absorb sound and achieve better sound quality, but this cannot be achieved in many scenarios (such as vehicles).

application content

In order to solve or improve the above problems, the embodiments of the present application provide a pronunciation unit and audio equipment.

In one embodiment of the application, a pronunciation unit is provided, comprising:

The diaphragm, the diaphragm has a first structure, the first structure has at least one sounding cavity, and the sounding cavity has an opening; the diaphragm is provided with a plurality of magnetic pole corresponding areas and a power circuit;

A plurality of magnets, the plurality of magnets are arranged in a second structure matching the first structure; the plurality of magnets are respectively arranged corresponding to the corresponding regions of the magnetic poles, and the energized circuit is located adjacent to and facing the diaphragm between two magnets with opposite poles.

Optionally, a box body is also included, the box body is a third structure matching the first structure, and the diaphragm and the magnet are both arranged on the box body;

The box body is provided with a sealing structure, and the sealing structure seals the opening of the sounding cavity, so that the sounding cavity is in a closed structure, and the sound emitted by the diaphragm is transmitted from the outside of the sounding cavity; or,

The sealing structure is arranged outside the sounding cavity, so that the opening of the sounding cavity is in an open state, and the sound emitted by the vibrating membrane is transmitted from the opening of the sounding cavity.

Optionally, the plurality of magnets include a plurality of first sub-magnets and a plurality of second sub-magnets, the magnetic poles of the first sub-magnets facing the diaphragm and the second sub-magnets facing the diaphragm The magnetic poles are opposite;

A plurality of the first sub-magnets and a plurality of the second sub-magnets are arranged at intervals on the same side of the diaphragm; or, a plurality of the first sub-magnets and a plurality of the second sub-magnets are spaced and staggered disposed on opposite sides of the diaphragm.

Optionally, when a plurality of the first sub-magnets and a plurality of the second sub-magnets are arranged at intervals on the same side of the diaphragm, there is a space between the first sub-magnets and the second sub-magnets Soundproof structure.

Optionally, the plurality of magnets include a plurality of magnet groups, each of the magnet groups includes a pair of opposite magnets with the same polarity, and each pair of magnets has an opposing gap, adjacent and opposite An electrical gap is set between the two magnet groups with opposite magnetic poles;

The vibrating membrane is disposed in the opposing gap, and the energizing circuit is arranged in the energizing gap.

Optionally, the first structure includes one of a cylindrical structure, a spherical structure, a U-shaped structure, a rectangular structure, a C-shaped structure, a J-shaped structure, a B-shaped structure, and an S-shaped structure; or

The first structure includes a cylindrical structural section and a hemispherical structural section, at least one end of the cylindrical structural section is provided with the hemispherical structural section.

Optionally, a plurality of magnetic conductive parts are further included, and the magnetic conductive parts are respectively connected to two adjacent magnets facing the vibrating membrane with opposite magnetic poles.

Optionally, the diaphragm includes:

at least one insulating film, on which a magnetic pole corresponding region is arranged;

A plurality of conductive films, each of which is connected to at least one of the insulating films, the plurality of conductive films are arranged at intervals, and the magnetic pole corresponding regions are respectively provided on both sides of each of the conductive films;

A plurality of connecting elements, through which the plurality of conductive films are connected in series to form an electric circuit.

Optionally, the insulating film includes one, and the insulating film includes a first surface and a second surface disposed opposite to each other;

A plurality of the conductive films are all connected to the first surface; or

The plurality of conductive films include a plurality of first sub-films and a plurality of second sub-films, the plurality of first sub-films are arranged on the first surface, and the plurality of second sub-films are arranged on the On the second surface, the first sub-film is spaced apart from the second sub-film.

Optionally, the insulating film includes two layers arranged in a stack, and a plurality of conductive films are arranged between the two insulating films.

Optionally, an insulating structure is provided between two adjacent conductive films.

Optionally, the insulating film includes a plurality of insulating films and the plurality of conductive films are sequentially connected at intervals.

Optionally, the insulating film includes a first surface and a second surface disposed opposite to each other, and a side surface disposed between the first surface and the second surface;

A plurality of the conductive films are all connected to the first surface; or, a plurality of the conductive films are connected to the side; or, the two sides of the conductive film are respectively provided with an insulating film, and the conductive film is connected to the first surface. The first surface of one of the insulating films is connected to the second surface of the other insulating film.

Optionally, the communication member includes a communication film disposed on the insulating film; or

The connecting member includes a conductive wire.

Optionally, a feedback wire is provided on the conductive film, and the feedback wire extends along the direction of current flow in the energized circuit.

Optionally, each of the conductive films includes a plurality of segmented films, and each of the plurality of segmented films extends along the flow direction of the current in the energized circuit;

A plurality of segmented films are distributed at intervals from one magnetic pole corresponding region to the other magnetic pole corresponding region.

Optionally, the insulating film includes one, and the insulating film includes a first surface and a second surface disposed opposite to each other;

A plurality of the segmented films are all connected to the first surface, and an insulating structure is provided between two adjacent segmented films; or

The plurality of segmented films include a plurality of first sub-segment films and a plurality of second sub-segment films, the plurality of first sub-segment films are arranged on the first surface, and the plurality of second sub-segment films The segment film is arranged on the second surface, and the first sub-segment film is spaced apart from the second sub-segment film.

Optionally, the insulating film includes two layers arranged in a stack, and a plurality of segmented films are arranged between the two insulating films.

Optionally, an insulating structure is provided between two adjacent segmented films.

Optionally, from one magnetic pole corresponding region to the other magnetic pole corresponding region, the dimensions of the plurality of segmented films are equal, or, the closer to the magnetic pole corresponding region, the smaller the size of the segmented films big.

Correspondingly, the embodiment of the present application also provides an audio device, including: a device main body and the above-mentioned pronunciation unit disposed on the device main body.

In addition, optionally, a signal input circuit, a signal amplifier and a feedback circuit are also included;

The signal input circuit is connected to the signal amplifier, and the signal amplifier is connected to the pronunciation unit;

The feedback circuit is respectively connected to the feedback wire on the conductive film in the sounding unit and the signal amplifier, and is used to feed back the vibration frequency of the diaphragm in the sounding unit to the signal amplifier.

In another embodiment of the present application, a pronunciation unit is provided, comprising:

The diaphragm, the diaphragm has a first structure, the first structure has at least one sounding cavity, and the sounding cavity has an opening; the diaphragm is provided with a plurality of magnetic pole corresponding regions and a plurality of conductive regions, and a plurality of The conductive areas are connected in series to form an energized circuit;

A plurality of magnets, the plurality of magnets are arranged in a second structure matching the first structure; the plurality of magnets are respectively arranged corresponding to the corresponding regions of the magnetic poles, and the energized circuit is located adjacent to and facing the diaphragm between two magnets with opposite poles.

In the technical solution provided by the embodiment of the present application, when the energized diaphragm vibrates under the action of the magnetic field of the magnet, it vibrates into the sound chamber and outside the sound chamber, and the sound waves before and after the diaphragm will not cancel out, so there will be no loss of bass , can achieve full-range coverage with a smaller volume and a single sounding element.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a three-dimensional structure of a pronunciation unit provided by an embodiment of the present application;

FIG. 2 is a schematic top view of a pronunciation unit provided by an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a pronunciation unit with a box provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another pronunciation unit with a box provided by an embodiment of the present application;

Fig. 5 is a schematic structural diagram when the first structure provided by an embodiment of the present application is a spherical structure;

Fig. 6 is a schematic structural view of the first structure provided by an embodiment of the present application when it has a cylindrical structure section and a hemispherical structure section;

Fig. 7 is a structural schematic diagram of a pronunciation unit of a sound insulation structure provided by an embodiment of the present application;

Fig. 8 is a schematic structural diagram when the first structure provided by an embodiment of the present application is a U-shaped structure;

Fig. 9 is a schematic structural diagram when the first structure provided by an embodiment of the present application is a rectangular structure;

10a to 10f are schematic diagrams of multiple implementations of the first structure provided by an embodiment of the present application;

Fig. 11 is a schematic diagram of another diaphragm and magnet arrangement provided by an embodiment of the present application;

FIG. 12 is a schematic top view of another pronunciation unit provided by an embodiment of the present application;

Fig. 13 is a schematic diagram of an arrangement of a diaphragm and magnets provided by an embodiment of the present application;

Fig. 14 is a schematic diagram of the arrangement structure of the magnetic permeable parts provided by an embodiment of the present application;

Figures 15 to 17 are schematic diagrams of various arrangements of diaphragms and magnets provided by an embodiment of the present application;

FIG. 18 is a schematic diagram of a three-dimensional structure of a diaphragm provided by an embodiment of the present application;

FIG. 19 is a schematic top view of the diaphragm provided by an embodiment of the present application;

20 to 27 are schematic diagrams of various implementations of the diaphragm provided by an embodiment of the present application;

Fig. 28 is a schematic circuit diagram of an audio device provided by an embodiment of the present application.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that in the description of the present application, the terms "first" and "second" are only used to describe different components or names conveniently, and should not be understood as indicating or implying a sequence relationship, relative importance, or implicit indication The number of technical characteristics indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

FIG. 1 is a schematic diagram of a three-dimensional structure of a pronunciation unit provided by an embodiment of the present application, and FIG. 2 is a schematic diagram of a top view structure of a pronunciation unit provided by an embodiment of the present application, as shown in FIGS. 1 and 2 .

An embodiment of the present application provides a sounding unit, including: a diaphragm 100 and a plurality of magnets 200 . Wherein, the diaphragm 100 has a first structure, and the first structure has at least one sounding cavity 300, and the sounding cavity 300 has an opening. The vibrating membrane 100 is provided with a plurality of magnetic pole corresponding regions 4 and an electric circuit. The plurality of magnets 200 are arranged in a second configuration matching the first configuration. A plurality of magnets 200 are respectively arranged corresponding to the magnetic pole corresponding regions 4 , and the energization circuit is located between two adjacent magnets 200 facing opposite magnetic poles of the vibrating membrane 100 .

For example, continuing with Fig. 1 and Fig. 2, taking the cylindrical structure of the diaphragm 100 as an example, that is, the first structure is a cylindrical structure, and the space enclosed by the cylindrical structure is the sounding cavity 300, along the circumferential direction of the cylindrical structure direction, the diaphragm 100 is provided with a magnetic pole corresponding area 4 and a power circuit at intervals. The magnet 200 is a bar magnet, and a plurality of bar magnets are arranged at intervals along the circumferential direction of the cylindrical structure and respectively correspond to the magnetic pole corresponding regions 4 on the diaphragm 100 . The magnetic poles of two adjacent magnets 200 facing the vibrating membrane 100 are opposite. N and S in FIG. 2 indicate that the magnetic poles of the magnets 200 facing the vibrating membrane 100 are opposite.

When in use, the pronunciation unit is arranged in the casing of the audio equipment, and the axial ends of the cylindrical structure can be in three states, one state is that the axial ends of the cylindrical structure are closed, that is, the opening of the sounding cavity 300 In a closed state, it can also be called that the inside of the sounding chamber 300 is completely closed. Under this structure, the diaphragm 100 relies on the outside of the sounding chamber 300 to sound, and the diaphragm 100 is closed in a ring shape, which is equivalent to only one side, and the diaphragm 100 The front and rear sound waves will not cancel out, and the bass will not be lost, and the full-range coverage can be achieved with a smaller volume and a single sounding element.

Another state is that the circumferential outer periphery of the cylindrical structure is closed, and the two ends of the axial direction are open, that is, the opening of the sounding cavity 300 is in an open state, and the outer periphery of the sounding cavity 300 is closed. In this structure, the diaphragm 100 relies on the sounding cavity The internal sound of 300, the energized circuit on the diaphragm 100 is energized, and cooperates with the magnetic field generated by a plurality of magnets 200, so that the diaphragm 100 can vibrate along the radial direction of the cylindrical structure, so that the internal air of the sound cavity 300 is squeezed and vibrated Sound waves are generated, and the sound waves are transmitted from the axial direction of the cylindrical structure. Since the outer periphery of the diaphragm 100 is closed, the sound will produce a superimposed effect inside the sounding cavity 300. The sound not only has no front and back offset, but also has been strengthened, and it is emitted from the hollow part of the sounding cavity 300. The hollow part of the sounding cavity 300 There is no physical sound source, so this is more like a virtual sound source, so that you can get a sound source that both bass and treble are enhanced.

Another state is that the circumferential outer circumference and axial ends of the cylindrical structure are not closed. In this structure, the diaphragm 100 relies on the outside of the sound chamber 300 to produce sound, reducing the loss of bass at the front and rear of the diaphragm 100 . In the technical solution provided by the embodiment of the present application, when the energized diaphragm 100 vibrates under the magnetic field of the magnet 200, it vibrates into the sound chamber 300 and outside the sound chamber 300, and the sound waves before and after the diaphragm 100 will not cancel out, thereby The bass will not be lost, and the full-range coverage can be achieved with a small volume and a single sounding element, which is suitable for small desktop speakers.

The following is a detailed introduction to the different sounding modes of the sounding unit.

Firstly, the case where the opening of the sound emitting chamber 300 is closed is introduced. Referring to Fig. 3 and Fig. 4, in order to realize the installation of the diaphragm 100 and the magnet 200 and maintain the corresponding setting positions, in the embodiment of the present application, the sound unit further includes a box body 500, and the box body 500 is a third structure matching the first structure , the diaphragm 100 and the magnet 200 are both arranged on the box body 500 . The box body 500 is provided with a sealing structure, the sealing structure includes but not limited to a cover 501, the sealing structure seals the opening of the sounding cavity 300, so that the sounding cavity 300 is a sealed structure, and the sound emitted by the diaphragm 100 is transmitted from the outside of the sounding cavity 300. Alternatively, the sealing structure is arranged on the outside of the sounding cavity 300 so that the opening of the sounding cavity 300 is in an open state, and the sound emitted by the diaphragm 100 is transmitted from the opening of the sounding cavity 300 .

Referring to FIG. 1 and FIG. 2, referring to FIG. 3 and FIG. 4, for example, the diaphragm 100 has a cylindrical structure, the magnet 200 is a bar magnet, and a plurality of bar magnets are arranged at intervals along the circumferential direction of the cylindrical structure. They respectively correspond to the magnetic pole corresponding regions 4 on the vibrating membrane 100 . The magnetic poles of two adjacent magnets 200 facing the diaphragm 100 are opposite. The diaphragm 100-level magnets 200 are all arranged on the box body 500, and the axial ends of the cylindrical structure are closed. The other end of the cylindrical structure is sealed by the cover 501, so that the openings at both ends of the sounding chamber 300 are in a closed state, which can also be called that the interior of the sounding chamber 300 is completely closed, and the cylindrical structure The interior is equipped with a structure that can consume sound energy or reflect sound waves at multiple angles. Under this structure, the diaphragm 100 relies on the outside of the sound chamber 300 to generate sound, and the diaphragm 100 is closed in a ring shape, which is equivalent to only one side, front and rear of the diaphragm 100. The sound waves will not be canceled out, and the bass will not be lost, and the full-range coverage can be achieved with a smaller volume and a single sounding element.

Another way to realize that the sounding cavity 300 is in a closed state is that, referring to FIG. 5 , the diaphragm 100 has a spherical structure, that is, the first structure is a spherical structure, and the sounding cavity 300 is the inner cavity of the spherical structure. When in use, the energizing circuit on the diaphragm 100 is energized, and cooperates with the magnetic field generated by the multiple magnets 200, so that the diaphragm 100 expands and contracts inwardly, and the inside of the sounding cavity 300 is closed, relying on the outside of the sounding cavity 300 to generate sound. The sounding cavity 300 effectively avoids sound wave interference and cancellation in positive and negative directions, effectively protects the bass without losing the bass. It should be noted that the spherical structure described in the embodiment of the present application does not only refer to a spherical shape, but also refers to a structure similar to a spherical shape. The spherical structure in the embodiment of the present application includes but is not limited to a circular Sphere, regular N-hedron, N greater than or equal to 12.

For example, referring to Fig. 5, a realizable spherical structure is a three-dimensional structure composed of six rectangles and eight hexagons, the shape is close to a circular sphere, and each vertex is used as a magnetic pole corresponding area 4, correspondingly provided with Magnet 200 or magnet group 5, such as, a magnet group 5 can be arranged at each vertex, each magnet group 5 is made up of two magnetic poles to the top magnet group 5, the design of the energized circuit follows: current passes through every two vertex There is one and only one connection between them, and when the current passes, the magnetic pole of the magnet 200 on the left side of the current along the current flow direction does not change. pole.

Another way to realize the closed state of the sounding cavity 300 is that, referring to FIG. 6 , the first structure includes a cylindrical structure section and a hemispherical structure section, and at least one end of the cylindrical structure section is provided with a hemispherical structure section. The cylindrical structure can be provided with a hemispherical structural section at one end, or at both ends. The hemispherical structure section seals the two ends of the cylindrical structure section, so that the inside of the sound chamber 300 is in a closed state. When the diaphragm 100 vibrates, the sound waves before and after the diaphragm 100 will not cancel out, and the bass will not be lost. The small volume and single sounding element achieve full-range coverage.

The following describes the case where the outside of the sound emitting cavity 300 is closed. Referring to FIG. 1 and FIG. 2 , referring to FIG. 7 , the box body 500 has a third structure matching the first structure, and a part of the box body 500 is arranged around the periphery of the diaphragm 100 to form a sealed structure. The opening of the sounding cavity 300 is open, and the sound emitted by the vibrating membrane 100 is transmitted from the opening of the sounding cavity 300 .

Continuing to refer to Fig. 7, still taking the cylindrical structure of the diaphragm 100 as an example, when the diaphragm 100 vibrates, it moves inwards or outwards at the same time, so that the vibration and sound of the diaphragm 100 will produce a superimposed effect inside, and at this time On the back of the diaphragm 100, that is, the sound vibrating in the space between the diaphragm 100 and the box body 500 is blocked by the box body 500, and the sound is absorbed by the sound insulation structure 400 between the magnets 200, so that a It is a sound source that has both bass and treble enhanced. The vibrating membrane 100 generates sound by relying on the interior of the sound emitting cavity 300 , and the sound wave is emitted from the opening in the axial direction of the cylindrical structure. Since the outer periphery of the diaphragm 100 is closed, the sound will produce a superimposed effect inside the sounding cavity 300. The sound not only has no front and back offset, but also has been strengthened, and it is emitted from the hollow part of the sounding cavity 300. The hollow part of the sounding cavity 300 There is no physical sound source, so this is more like a virtual sound source, so that you can get a sound source that both bass and treble are enhanced.

In addition to the cylindrical structure of the diaphragm 100, the diaphragm 100 can also have other shapes and structures. For example, one possible way is, referring to FIG. 8, the first structure is a U-shaped structure, and the sounding cavity 300 is a U-shaped structure. inner cavity of the structure. The sealing structure on the box body 500 is arranged on the outer periphery of the diaphragm 100 to prevent the diaphragm 100 from emitting sound from the outside. When in use, the energizing circuit on the diaphragm 100 is energized, and cooperates with the magnetic field generated by the multiple magnets 200, so that the diaphragm 100 can vibrate along the inner and outer directions of the U-shaped structure, so that the air inside the sounding cavity 300 is squeezed and vibrates to generate sound waves , the sound waves are transmitted from the open end of the U-shaped structure. The sounding cavity 300 effectively avoids the interference and cancellation of the sound waves in the positive and negative directions, effectively protects the bass, and the internal sound waves are strengthened in the inner cavity of the U-shaped structure. The hollow part of the sound chamber 300 has no physical sound source, so it is more like a virtual sound source, so that a sound source with enhanced bass and treble can be obtained.

Another possible implementation of the diaphragm 100 is, referring to FIG. 9 , the first structure is a rectangular structure, and the sounding cavity 300 is an inner cavity of the rectangular structure. When in use, the energized circuit on the vibrating membrane 100 is energized to cooperate with the magnetic field generated by the plurality of magnets 200, so that the vibrating membrane 100 can vibrate along the inner and outer directions of the rectangular structure, so that the internal air of the sounding cavity 300 is squeezed and vibrates to generate sound waves. Sound waves emerge from the open end of the rectangular structure. The sounding chamber 300 effectively avoids the interference and cancellation of the sound waves in the forward and reverse directions, effectively protects the bass, and the internal sound waves are strengthened in the inner cavity of the rectangular structure. The hollow part of the sound chamber 300 has no physical sound source, so it is more like a virtual sound source, so that a sound source with enhanced bass and treble can be obtained.

In the above embodiments, the opening of the sounding cavity 300 of the vibrating membrane 100 is in a closed state and the outside of the sounding cavity 300 is in a closed state. The following introduces that the sounding cavity 300 is an open implementation.

Referring to Fig. 10a to Fig. 10f, in the embodiment of the present application, the vibrating membrane 100 can have various shapes of the first structure, the first structure includes but not limited to U-shaped structure, C-shaped structure, B-shaped structure, J-shaped structure and One of the S-shaped structures. The first structures all include sounding cavities 300, and the number of sounding cavities 300 can be one, two or more according to different shapes. When in use, neither the periphery of the diaphragm 100 nor the opening of the sounding chamber 300 is closed. With this structure, relying on the structural shape of the diaphragm 100 itself, and rationally designing the shape of the edge of the diaphragm 100, the loss of bass at the front and rear is reduced. .

Referring to Fig. 10b, taking the first structure as a C-shaped structure as an example, when in use, the energized circuit on the diaphragm 100 is energized, and cooperates with the magnetic field generated by a plurality of magnets 200, so that the diaphragm 100 can move along the inner and outer directions of the C-shaped structure. Vibration, inside and outside the sounding chamber 300 (also called the front and back of the diaphragm 100, the inside of the sounding chamber 300 is the front of the diaphragm 100, and the outside of the sounding chamber 300 is the back of the diaphragm 100) The phase difference of the sound waves generated is 180° , during the propagation of the sound wave, for the diffraction of obstacles, the low-frequency region (that is, the L region) is easier to diffract than the high-frequency region (that is, the H region). Therefore, although part of the bass will be lost during the vibration of the diaphragm 100, But the bass can be heard in the sound shadow area (that is, the S area), because there is no interfering sound wave in the sound shadow area. By changing the structural shape of the vibrating membrane 100, the sound shadow area can be effectively enlarged, the sound wave interference can be reduced more effectively, and the loss of bass can be reduced. When the first structure is a U-shaped structure, J-shaped structure, B-shaped structure, and S-shaped structure, the pronunciation and setting methods are similar to the above, and can effectively expand the sound shadow area to reduce bass loss. repeat.

The arrangement of the magnets 200 adopted in the embodiment of the present application will be described in detail below.

In the embodiment of the present application, there are many ways to arrange the magnets 200 . One possible way is, referring to FIG. 1 and FIG. 2 , the magnet 200 can be a single piece, and the multiple magnets 200 are arranged at intervals. Another possible way is, referring to FIG. 11 and FIG. 12 , the multiple magnets 200 include multiple magnet groups 5 , and the multiple magnets 200 are arranged at intervals.

When the magnet 200 is set as a single piece, one possible way is that the plurality of magnets 200 include a plurality of first sub-magnets 200a and a plurality of second sub-magnets 200b, and the first sub-magnets 200a face the magnetic poles of the diaphragm 100 and the The magnetic poles of the second sub-magnet 200 b facing the diaphragm 100 are opposite. For example, the N pole of the first sub-magnet 200 a faces the diaphragm 100 , and the second sub-magnet 200 b faces the diaphragm 100 with its S pole. Of course, it is also possible that the S pole of the first sub-magnet 200 a faces the diaphragm 100 , and the second sub-magnet 200 b faces the diaphragm 100 with its N pole. One arrangement of the plurality of first sub-magnets 200a and the plurality of second sub-magnets 200b is, referring to FIG. 1 and FIG. On the same side of the cylindrical structure, for example, a plurality of first sub-magnets 200a and a plurality of second sub-magnets 200b are arranged on the outer side of the cylindrical structure. Another arrangement is, referring to FIG. 13 , a plurality of first sub-magnets 200a and a plurality of second sub-magnets 200b are spaced and staggered on opposite sides of the diaphragm 100, for example, a plurality of first sub-magnets 200a The first sub-magnets 200a are arranged at intervals on one side of the diaphragm 100 (such as the upper side), and the plurality of second sub-magnets 200b are arranged at intervals on the other side of the diaphragm 100 (such as the lower side). A first sub-magnet 200a is spaced between two second sub-magnets 200b, and a second sub-magnet 200b is spaced between two adjacent first sub-magnets 200a.

Further, when the sounding cavity 300 is an outer closed structure, in order to enhance the sound intensity of the sound emitted by the sounding cavity 300, referring to Fig. 7 to Fig. 9, a plurality of first sub magnets 200a and a plurality of second sub magnets 200b are arranged at intervals When the diaphragm 100 is on the same side, a sound insulation structure 400 is provided between the first sub-magnet 200a and the second sub-magnet 200b. The sound insulation structure 400 includes but is not limited to sound insulation cotton, sound insulation sponge, etc. When the diaphragm 100 vibrates, the diaphragm 100 vibrates as a whole into the sound cavity 300 or as a whole to the outside of the sound cavity 300, so that the sound generated by the vibration of the diaphragm 100 is emitted The interior of the acoustic cavity 300 will produce a superimposed effect, and at the same time, the sound vibrating on the back of the diaphragm 100, that is, the space between the diaphragm 100 and the magnet 200, is blocked and absorbed by the sound insulation structure 400 to prevent the sound from being transmitted. Therefore, a sound source with enhanced bass and treble can be obtained in the sound emitting cavity 300 .

11 and 12, the plurality of magnets 200 includes a plurality of magnet groups 5, each magnet group 5 includes a pair of opposite magnets 200 with the same pole, and there is an opposing gap between each pair of magnets 200, so that An electric gap is set between two adjacent and opposite magnet groups 5 with opposite magnetic poles. The vibrating membrane 100 is disposed in the opposing gap, and the energizing circuit is disposed in the energizing gap. Referring to Fig. 12, taking the diaphragm 100 as a cylindrical structure as an example, the magnetic poles of the paired magnets 200 facing the diaphragm 100 are the same, for example, they all face the diaphragm 100 through the N pole, or they all face the diaphragm 100 through the S pole. After the energizing circuit on the diaphragm 100 is energized, the diaphragm 100 can vibrate along the radial direction of the cylindrical structure in cooperation with the magnetic field generated by the plurality of magnet groups 5, so that the internal air of the sounding cavity 300 is squeezed and vibrates to generate sound waves, The sound waves are transmitted from the axial direction of the cylindrical structure. Furthermore, when the sounding cavity 300 is an outer closed structure, in order to enhance the sound intensity of the sound emitted by the sounding cavity 300 , a sound insulation structure 400 is provided between the plurality of magnets 200 outside the sounding cavity 300 . When the sounding cavity 300 is an open and closed structure, in order to enhance the sound intensity of the sound emitted from the outside of the sounding cavity 300 , a sound insulation structure 400 is provided between the plurality of magnets 200 inside the sounding cavity 300 .

In the embodiment of the present application, the vibrating membrane 100 can have various shapes of the first structure. The first structure includes but is not limited to a cylindrical structure, a spherical structure, a U-shaped structure, a rectangular structure, a C-shaped structure, a J-shaped structure, and a B-shaped structure. One of the S-type structure and the S-type structure. The multiple shapes presented by the first structure all include sound emitting cavities 300, and the number of sound emitting cavities 300 may be one, two or more according to different shapes. Regardless of the structure of the vibrating membrane 100 , the arrangement of the magnets 200 may be a single arrangement, or arrangement in a manner of magnet groups 5 .

Taking the first structure as a cylindrical structure as an example, when the first structure is a cylindrical structure, referring to Figures 1 to 4, a plurality of magnets 200 can be arranged at intervals on the outer periphery of the cylindrical structure, or, referring to Figures 7 and 12, A plurality of magnet groups 5 are arranged at intervals in the circumferential direction, or, referring to FIG. 13 , a plurality of magnets 200 are arranged at staggered intervals inside and outside along the circumferential direction of the cylindrical structure.

Referring to FIG. 8 , taking the first structure as a U-shaped structure as an example, when the first structure is a U-shaped structure, a plurality of magnets 200 can be arranged at intervals on the outer periphery of the U-shaped structure, and a sound insulation structure 400 can be provided between adjacent magnets 200 , or, a plurality of magnet groups 5 are arranged at intervals along the shape of the U-shaped structure, or, a plurality of magnets 200 are arranged at staggered intervals inside and outside along the shape of the U-shaped structure.

9, taking the first structure as a rectangular structure as an example, a plurality of magnets 200 can be arranged at intervals on the outer periphery of the rectangular structure, and a sound insulation structure 400 can be arranged between adjacent magnets 200, or a plurality of magnet groups 5 can be arranged along the rectangular structure. The shape of the structure is arranged at intervals, or a plurality of magnets 200 are arranged at intervals inside and outside along the shape of the rectangular structure. When the first structure is a C-shaped structure, a J-shaped structure, a B-shaped structure, or an S-shaped structure, the pronunciation and setting methods are similar to the above, and will not be repeated here.

Taking the first structure as a spherical structure as an example, see Figure 5, a realizable spherical structure is a three-dimensional structure composed of six rectangles and eight hexagons, the shape is close to a circular sphere, and each vertex corresponds to a magnetic pole Zone 4 is correspondingly provided with a magnet 200 or a magnet group 5. For example, a magnet group 5 can be arranged at each vertex, and each magnet group 5 is composed of two magnetic poles facing the top magnet group 5. The design of the energized circuit follows: There is one and only one connection between two vertices, and when the current passes, the magnetic pole of the magnet 200 on the left side of the current flow direction does not change. If it is always N pole, the corresponding right side does not change. change, such as always being the S pole.

Referring to FIG. 6 , the first structure includes a cylindrical structural section and a hemispherical structural section, at least one end of the cylindrical structural section is provided with a hemispherical structural section. The cylindrical structure can be provided with a hemispherical structural section at one end, or at both ends. The arrangement of the magnet 200 can refer to the arrangement described in the above content, and will not be repeated here.

In order to reduce the field strength loss between the magnet 200 and the magnet 200, referring to FIG. 14 , in a realizable embodiment of the present application, the pronunciation unit further includes a plurality of magnetic guides 6, the magnetic guides 6 are adjacent to and Two magnets 200 with opposite magnetic poles facing the diaphragm 100 are connected respectively. The magnetic guide 6 can effectively guide the magnetic field generated between the magnets 200 to form in a desired direction, thereby reducing the loss of field strength. The magnetic guide 6 includes but is not limited to silicon steel.

In the embodiment of the present application, in addition to the arrangement of the magnets 200 as shown in the above-mentioned embodiments, there are also other arrangements. Referring to FIG. 15, the magnetic pole corresponding area 4 on the diaphragm 100 can be hexagon Arranged in a shape structure, the magnet 200 is arranged corresponding to the magnetic pole corresponding area 4, and the magnetic pole of the magnet 200 facing the diaphragm 100 is different in the adjacent magnetic pole corresponding area 4. In Fig. 15 , N or S in the magnetic pole corresponding area 4 respectively represent that the magnetic pole of the magnet 200 facing the diaphragm 100 is N pole or S pole. One magnet 200 or one magnet group 5 can be arranged in each magnetic pole corresponding region 4 . The conductive film 2 is arranged between the adjacent magnetic pole corresponding regions 4 , and a plurality of conductive films 2 are connected in series through the connecting piece 3 to form a complete electric circuit. By applying a current signal on the energized circuit, the current flows from one end of the energized circuit to the other end, so that the direction of the force on the conductive film 2 in the magnetic field is the same, so that the vibration amplitude and direction of the entire diaphragm 100 are the same at the same time. This kind of honeycomb structure can well fill a circular structure, and has better coverage for some circular sounding units. Except for the hexagonal arrangement of the magnetic pole corresponding area 4, see Figure 16 and Figure 17, the diaphragm The magnetic pole corresponding regions 4 on the 100 can also be arranged in a rectangular shape or a rhombus shape, and various shapes can be used in combination in practical applications. For example, referring to FIG. 5 , the structure of the spherical diaphragm 100 adopts two types of regular hexagon and square. Shapes combine. Of course, they can also be arranged in other shapes, which will not be repeated here.

The implementation of the diaphragm 100 provided in the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 17 .

Referring to FIG. 18 and FIG. 19 , in the embodiment of the present application, one possible implementation of the diaphragm 100 is that the diaphragm 100 includes: at least one insulating film 1 , multiple conductive films 2 and multiple connecting elements 3 . Wherein, a magnetic pole corresponding region 4 is provided on the insulating film 1 . Each conductive film 2 in the plurality of conductive films 2 is connected to at least one insulating film 1 , the plurality of conductive films 2 are arranged at intervals, and magnetic pole corresponding regions 4 are provided on both sides of each conductive film 2 . A plurality of conductive films 2 are connected in series through a plurality of connecting elements 3 to form an electric circuit.

When the energized circuit is energized, the diaphragm 100 vibrates in conjunction with the magnetic field of the magnet 200. When the diaphragm 100 vibrates, it vibrates into the sound emitting cavity 300 and outside the sound emitting cavity 300, so that the sound will be superimposed inside the sound emitting cavity 300. The effect, so as to obtain a sound source that both the bass and the treble are strengthened, and the full-range coverage can be achieved with a smaller volume. The insulating film 1 has the function of insulation, and can effectively separate the conductive film 2 into multiple ones, so as to avoid the connection between the multiple conductive films 2 not according to the predetermined design. At the same time, the insulating film 1 also has a certain degree of elasticity. When the diaphragm 100 is vibrating, the insulating film 1 can stretch and shrink to a certain extent, so as to ensure that the diaphragm 100 can vibrate back and forth, and return to the initial position after the power supply is stopped. . In addition, by reasonably setting the area of each vibrating membrane 100, since the energy is constant, the larger the area of the vibrating membrane 100, the smaller the amplitude, so that each vibrating membrane 100 can also emit low-frequency sounds that meet the needs of users. , so that the diaphragm 100 covers the high-middle-low frequency spectrum.

In the embodiment of the present application, the conductive film 2 includes, but is not limited to, made of the following materials. The conductive film 2 includes one of gold, silver, copper, iron, aluminum, graphite, graphene, carbon fiber, polymer materials and composite materials . Different materials have different performances and timbres, and different conductive films 2 can be made by selecting different materials to meet the needs of different users.

Further, in order to make the insulating material have a certain elasticity and insulation performance, it can also provide a certain support for the conductive film 2 . The insulating film 1 includes but is not limited to being made of spandex material, silicone material, rubber material, polyester film, polyester fiber or other polymer materials.

In the embodiment of the present application, according to different requirements, the diaphragm 100 can be implemented in various ways, see Figure 20 and Figure 21, the insulating film 1 can include one, see Figure 22, the insulating film 1 can also include two, Referring to FIGS. 23 to 25 , the insulating film 1 may also include a plurality. Under different arrangement methods of the insulating film 1 , the connection methods of the conductive film 2 and the insulating film 1 are also different. Introduce them separately below.

Referring to FIG. 20 , the insulating film 1 includes one, and the insulating film 1 includes a first surface 11 and a second surface 12 disposed opposite to each other. A plurality of conductive films 2 are all connected to the first surface 11 . A plurality of conductive films 2 are arranged at intervals and connected in series through a plurality of connecting pieces 3 , and the distances between adjacent conductive films 2 can be the same or different. Both sides of each conductive film 2 are provided with magnetic pole corresponding regions 4, (the region where the dotted line frame is located in Figure 20 is the magnetic pole corresponding regions 4, and only part of the magnetic pole corresponding regions 4 is shown in Figure 20, and the magnetic pole corresponding regions 4 in other positions Not shown in FIG. 20 does not mean that it does not exist, and the size of the dotted line box does not represent the area of the magnetic pole corresponding area 4, which is only used to indicate the positional relationship of the magnetic pole corresponding area 4 with respect to the diaphragm 100), And the magnetic pole corresponding regions 4 are distributed on the first surface 11 and the second surface 12 of the insulating film 1 at the same time. There are many ways to connect the conductive films 2 to the insulating film 1. One possible way is to connect the conductive films 2 to the insulating film 1 by gluing. A layer of conductive film 2 material is adhered on the film 1, and then a plurality of conductive films 2 are etched on the insulating film 1 by etching.

Referring to FIG. 21 , the insulating film 1 includes one, the insulating film 1 includes a first surface 11 and a second surface 12 disposed opposite to each other, and a plurality of conductive films 2 include a plurality of first sub-films 201 and a plurality of second sub-films 202 A plurality of first sub-films 201 are disposed on the first surface 11 , a plurality of second sub-films 202 are disposed on the second surface 12 , and the first sub-films 201 and the second sub-films 202 are disposed at intervals. A plurality of first sub-films 201 are arranged at intervals on the first surface 11 of the insulating film 1, a second sub-film 202 is separated between two adjacent first sub-films 201, and a plurality of second sub-films 202 are arranged at intervals on the insulating film 1. On the second surface 12 of the film 1, a first sub-film 201 is separated between two adjacent second sub-films 202, so that a plurality of first sub-films 201 and a plurality of second sub-films 202 are alternately arranged up and down, that is The first sub-film 201 and the second sub-film 202 are not only arranged at intervals in the lateral direction, but are also arranged at intervals in the vertical direction (in FIG. defined as the vertical direction), the adjacent first sub-membrane 201 and the second sub-membrane 202 are connected in series through a plurality of connecting pieces 3 . The distances between adjacent first sub-films 201 and second sub-films 202 in the lateral direction may be the same or different, and meanwhile, the widths of the corresponding magnetic pole corresponding regions 4 in the lateral direction may also be the same or different. In the technical solution provided by the embodiment of the present application, since the magnetic pole corresponding regions 4 are provided on both sides of each conductive film 2, when the area of each conductive film 2 is relatively large, the magnet 200 located in the magnetic pole corresponding regions 4 can still A stronger magnetic field is provided for the conductive film 2 .

Referring to FIG. 22 , in a practicable embodiment provided by the present application, two insulating films 1 are stacked, and a plurality of conductive films 2 are arranged between the two insulating films 1 . A plurality of conductive films 2 are arranged at intervals, and are connected in series through a plurality of connecting pieces 3. Each conductive film 2 is provided with a magnetic pole corresponding area 4 on both sides, and the conductive film 2 is arranged between two insulating films 1, which can effectively isolate the The air is in contact with the conductive film 2 to prolong the service life of the conductive film 2 and increase the structural strength of the diaphragm 100 at the same time. Further, in order to better isolate adjacent conductive films 2 , an insulating structure is provided between two adjacent conductive films 2 . The insulating structure can be made of the same material as the insulating film 1 .

Referring to FIG. 23 to FIG. 25 , the insulating film 1 includes a plurality of insulating films 1 and the plurality of conductive films 2 are sequentially connected at intervals. Both sides of a conductive film 2 are respectively connected with an insulating film 1 , and at the same time, both sides of an insulating film 1 are respectively connected with two conductive films 2 , so as to form a vibrating film 100 with an integral structure. Of course, the insulating film 1 at the edge of the diaphragm 100 is only connected to one conductive film 2 , and the insulating film 1 at the edge of the diaphragm 100 is used to connect with the box body 500 .

When there are multiple insulating films 1, a connection method of the conductive film 2 is as follows. Referring to FIG. Sides between faces 12. A plurality of conductive films 2 are all connected to the first surface 11 . Both ends of the conductive film 2 are respectively connected to two insulating films 1 , and both ends of the first surface 11 of the insulating film 1 are respectively connected to the two conductive films 2 . The plurality of conductive films 2 are substantially on the same plane, and the plurality of insulating films 1 are also substantially on the same plane, and the plane where the conductive film 2 is located and the plane where the insulating film 1 is located are not on the same plane but parallel to each other.

Referring to FIG. 24 , the insulating film 1 includes a first surface 11 and a second surface 12 disposed opposite to each other, and a side surface disposed between the first surface 11 and the second surface 12 . The plurality of conductive films 2 are all connected to the side surfaces. The diaphragm 100 has a one-layer structure, and the plurality of conductive films 2 and the plurality of insulating films 1 are substantially on the same plane. The two sides of one conductive film 2 are respectively connected with two insulating films 1 , and the two sides of one insulating film 1 are connected with two conductive films 2 respectively.

Referring to FIG. 25 , the insulating film 1 includes a first surface 11 and a second surface 12 opposite to each other, the two sides of the conductive film 2 are respectively provided with insulating films 1 , and the conductive film 2 is connected to the first surface 11 of one of the insulating films 1 , connected to the second surface 12 of another insulating film 1 . The conductive film 2 is located between the two insulating films 1, and the conductive film 2 is respectively connected to the two insulating films 1, that is, the upper surface of one end of the conductive film 2 is connected to the second surface 12 of an insulating film 1, and the conductive film 2 at one end The lower surface is connected to the first surface 11 of another insulating film 1 .

Referring to Fig. 18 and Fig. 19, in some realizable embodiments of the present application, according to different requirements, there are various ways to implement the connecting piece 3, and one possible way to realize the connecting piece 3 is that the connecting piece 3 includes setting The communication film on the insulating film 1. The material of the communication film can be the same as that of the conductive film 2 , of course, it can also be different, as long as the conductive function can be realized. Another possible implementation manner of the connecting member 3 is that the connecting member 3 includes, but is not limited to, a conductive wire. The conductive lines can be provided outside the insulating film 1 or on the insulating film 1 . When the vibrating film 100 is in the magnetic field and there is current passing through the conductive film 2 on the vibrating film 100, the vibrating film 100 will vibrate. The connection mode of the connecting member 3 is set, and a plurality of conductive films 2 are connected in series, so as to complete the direction of current flow. Since adjacent conductive films 2 are in magnetic fields with different directions, in order to make multiple conductive films 2 vibrate in the same direction at the same time, the directions of currents in adjacent conductive films 2 are different. Through the series connection of the connecting elements 3 , the directions of the current flowing through the adjacent conductive films 2 can be different.

In the embodiment of the present application, in order to simplify the structure of the diaphragm 100, referring to FIG. 19, when the connecting piece 3 is a connecting film, the connecting piece 3 can be arranged on the insulating film 1, and at the same time, the connecting piece 3 straddles the magnetic pole corresponding area 4 to realize two The connection between the two conductive films 2, and make the flow direction of the current in the connection part 3 the same as or opposite to the direction of the magnetic field (the flow direction of the current is not perpendicular to the magnetic field), so that when there is current in the connection part 3, the connection part 3 It will not vibrate with the force generated by the magnetic field.

Further, in order to reduce the weight of the diaphragm 100, referring to FIG. 18 , the connecting member 3 can be a conductive wire, one end of the conductive wire is connected to one end of one conductive film 2, and the other end is simultaneously connected to one end of another conductive film 2, so that each The conductive films 2 are connected in series with the adjacent conductive films 2 on both sides respectively, and the conductive wires are arranged outside the diaphragm 100 without increasing the weight of the diaphragm 100 .

Further, in order to accurately detect the vibration frequency and amplitude of the diaphragm 100, detecting the vibration frequency and amplitude of the diaphragm 100 is also equivalent to detecting the frequency and sound intensity of the sound. In a realizable embodiment of the present application, the conductive A feedback wire is provided on the film 2, and the feedback wire extends along the direction of current flow in the energized circuit. The feedback wire and the conductive film 2 are circuit isolated from each other (circuit isolation means that the feedback wire and the conductive film 2 are insulated from each other to avoid current interference between the two). The electrical signal on the conductive film 2 will not be transmitted to the feedback wire. When there is an electric signal on the conductive film 2 , the conductive film 2 will vibrate under the action of the magnetic field, and the feedback wire on the conductive film 2 will vibrate together with the conductive film 2 . Since the feedback wire is also located in the magnetic field, it will cut the magnetic induction line along the vibration direction during the vibration process and generate an induced current (voltage) in the feedback wire. By detecting the induced current (voltage), it can accurately Determine the vibration frequency of the diaphragm 100, so that the frequency and sound intensity of the sound emitted by the diaphragm 100 can be detected. After the feedback circuit receives the signal of the induced current, the feedback circuit can perform parameter adjustment on the sound source signal and the induced current (voltage). In order to complete the detection of the sound accuracy of the diaphragm. Then the feedback circuit adjusts the strength of the signal current through the feedback of the signal amplifier, so that the sound from the diaphragm is more accurate. In order to keep the amplitude of the vibration at each position of each conductive film 2 as consistent as possible, referring to Fig. 19 and Fig. 26, in some realizable embodiments of the present application, each conductive film 2 includes a plurality of segmented films, more Each segmented membrane extends along the direction of current flow in the energized circuit. In the direction from one magnetic pole corresponding region 4 to the other magnetic pole corresponding region 4, a plurality of segmented films are distributed at intervals. Both sides of each conductive film 2 are provided with magnetic pole corresponding regions 4, and the corresponding magnetic pole corresponding regions 4 of the magnet 200 are provided. The magnetic field strength in the middle of zone 4 is the weakest. Since the direction and magnitude of the current in the conductive film 2 are the same, the conductive film 2 located at a place with stronger magnetic field strength is subjected to a greater magnetic field force, that is, the vibration amplitude of the conductive film 2 is greater. By dividing the conductive film 2 into a plurality of segmented films, and setting the widths of different segmented films, the weight of the segmented films is changed, thereby adjusting its amplitude in the magnetic field.

For example, when the influence of the magnetic field strength is not very strong, the dimensions of the plurality of segmented films are equal from one magnetic pole corresponding region 4 to the other magnetic pole corresponding region 4 . When the influence of the magnetic field strength is greater, the closer to the magnetic pole corresponding region 4, the larger the size of the segmented film. The magnetic field strength closer to the magnetic pole corresponding region 4 can be defined as a high field strength region, and the magnetic field strength in the middle of the two magnetic pole corresponding regions 4 is a weak field strength region. The segmented film located in the high field strength area has a large width and heavy weight, and the segmented film located in the weak field strength area has a small width and light weight. That is, the widths of different segmented films located at different magnetic field strengths are different, and the weights of segmented films with different widths are different. In addition to the magnetic field, the width design of the segmented film should also consider the dead weight (the dead weight refers to the weight of the object that needs the conductive film 2 to pull the vibration, the dead weight of the diaphragm 100 refers to the weight of the insulating film 1, and the insulating film 1 itself does not Under the force of the magnetic field, the conductive film 2 needs to be pulled to vibrate, its weight is dead weight), the fixed end is pulled and damped. The larger the width of the segmented membrane located at the stronger magnetic field strength is, that is, the heavier the weight is, and the smaller the width of the segmented membrane located at the weaker magnetic field intensity is, that is, the lighter the weight is. The greater the weight, the greater the inertia. When the conductive film 2 is vibrating, the inertia factor can effectively offset the impact of uneven magnetic field strength, thereby ensuring that the vibration amplitude of each segmented film in the uneven magnetic field is roughly the same. At the same time, such a design is equivalent to increasing the length of the conductive film 2 in the magnetic field, which effectively improves the vibration efficiency of the diaphragm 100 .

In the embodiment of the present application, according to different requirements, there are many ways to arrange the segmented film. One possible way is that, referring to FIG. 26 , the insulating film 1 includes one insulating film 1 which includes a first surface 11 and the second surface 12. A plurality of segmented films are all connected to the first surface 11 , and an insulating structure is provided between two adjacent segmented films. Taking three segmented films as an example, the conductive film 2 is divided into three segmented films that are sequentially spaced apart, which are respectively the first segmented film 21, the second segmented film 22 and the third segmented film 23. The segmented membranes are separated by insulating material. The width of the first segmented film 21 and the third segmented film 23 is greater than the width of the second segmented film 22, that is, the weight of the first segmented film 21 and the third segmented film 23 is greater than the weight of the second segmented film 22 . When the magnet 200 is arranged in the magnetic pole corresponding region 4, the magnetic field intensity at the positions of the first segmented membrane 21 and the second segmented membrane 22 is relatively large, so that the vibration of the first segmented membrane 21 and the second segmented membrane 22 The range is relatively large, by increasing the width of the first segmented film 21 and the second segmented film 22, thereby increasing the weight of the first segmented film 21 and the second segmented film 22, the first segmented film 21 and the second segmented film The two-segmented membrane 22 can offset the influence of a part of the magnetic field force when vibrating, and relatively reduce the vibration amplitude. The magnetic field intensity at the position of the second segmented film 22 is relatively small, so that the vibration amplitude of the second segmented film 22 is relatively small. By reducing the width of the second segmented film 22, the weight of the second segmented film 22 is reduced. Lighter, the vibration amplitude is relatively increased, so as to ensure that the vibration amplitudes of different segmented membranes are roughly the same.

Another arrangement of the segmented film is, referring to FIG. 27 , the insulating film 1 includes one, and the insulating film 1 includes a first surface 11 and a second surface 12 arranged opposite to each other. The plurality of segmented films includes a plurality of first sub-segment films and a plurality of second sub-segment films, the plurality of first sub-segment films are arranged on the first surface 11, and the plurality of second sub-segment films are arranged on the second surface 12, the film of the first sub-section is spaced apart from the film of the second sub-section. Still taking three segmented films as an example, including two first sub-segment films and a second sub-segment film, the spaced two first sub-segment films are respectively the first segment film 21 and the third segment film 23. The second sub-segment film is the second segment film 22, the first segment film 21 and the third segment are respectively set on the first surface 11 of the insulating film 1, and the second segment film 22 is set on the insulating film 1 12 of the second side. By arranging different segmented films on different surfaces of the insulating film 1, different segmented films can be effectively isolated so that they will not affect each other.

Further, another way of disposing segmented films is that the insulating film 1 includes two stacked ones, and multiple segmented films are disposed between the two insulating films 1 . The conductive film 2 is divided into a plurality of segmented films, and the different segmented films are roughly located on the same plane, and the different segmented films are arranged at intervals from each other. The upper surface and the lower surface of the segmented film are respectively connected with the insulating film 1, and the upper and lower layers of the insulating film 1 can effectively prevent the conductive film 2 from contacting with the air, thereby prolonging the service life of the conductive film 2. In order to insulate different segmented films, an insulating structure is provided between two adjacent segmented films.

Correspondingly, the embodiment of the present application also provides an audio device, including: a device main body and the pronunciation unit in the above-mentioned embodiments arranged on the device main body. Audio equipment includes but is not limited to earphones, loudspeakers, speakers, etc. For the implementation of the pronunciation unit, reference may be made to the content in the above-mentioned embodiments, and details will not be repeated here.

Further, in a practicable embodiment of the present application, referring to FIG. 28 , the audio equipment further includes a signal input circuit, a signal amplifier and a feedback circuit. The signal input circuit is connected with the signal amplifier, and the signal amplifier is connected with the pronunciation unit. The feedback circuit is respectively connected with the feedback wire on the conductive film 2 in the pronunciation unit and the signal amplifier for feeding back the vibration frequency of the diaphragm 100 in the pronunciation unit to the signal amplifier. After the input end of the input circuit receives a sound source signal, it converts the sound source signal into a corresponding first electric signal, and transmits the first electric signal to the input port of the signal amplifier through the output end of the input circuit. After the first electrical signal is amplified and filtered by the signal amplifier, the output port on the signal amplifier will output a second electrical signal with a certain frequency and intensity to the pronunciation unit, and the second electrical signal passes through the energizing circuit of the diaphragm 100 Acting on the diaphragm 100, at this time the conductive film 2 in the energized circuit is energized, and the conductive film 2 will vibrate at a certain frequency and intensity in the magnetic field, thereby emitting a sound with a certain frequency and sound intensity.

During the vibration of the diaphragm 100 , the feedback wires arranged on the conductive film 2 will vibrate together with the conductive film 2 . Since the feedback wire generates a corresponding induced current during the vibration process, the induced current can accurately reflect the frequency and sound intensity of the sound emitted by the vibrating membrane 100 . After the feedback circuit receives the signal of the induced current, the feedback circuit can compare the first electrical signal converted from the sound source signal with the induced current, so as to complete the detection of the accuracy of the sound emitted by the diaphragm 100 . Then the feedback circuit feeds back the detection result to the signal amplifier, and the signal amplifier adjusts the second electrical signal according to the detection result, so that the sound emitted by the diaphragm 100 is more accurate.

In another embodiment of the present application, the signal amplifier includes a feedback processing circuit, and the signal amplifier not only has the function of signal amplification, but also has the ability to process the audio source signal and the induced current. The output end of the input circuit is connected to the input port of the signal amplifier, while the output port of the signal amplifier is connected to the energized circuit on the diaphragm 100, and the feedback wire is connected to the input port of the signal amplifier. When the diaphragm 100 is vibrating, the induced current generated in the feedback wire is directly transmitted to the signal amplifier. After the feedback processing circuit in the signal amplifier processes it, the signal amplifier will output a new signal current. The sound produced under the action is more precise.

In a technical solution provided by the present application, the feedback circuit or the signal amplifier can directly obtain the detailed current (voltage) parameters from the feedback wire in real time, thereby indirectly judging the accuracy of the sound played. In contrast to the existing common audio feedback systems, the parameters of the feedback current (voltage) are usually obtained before the playback end to correct the audio signal current. The problem is that after the signal enters the playback end, there is also a signal at the playback end. In the case of interference or loss, the feedback signal obtained by this type of audio in front of the playback end cannot actually correct the signal current accurately, and the sound from the playback end is also inaccurate. However, in a technical solution provided by the present application, the actual vibration state can be obtained when the vibrating membrane 100 vibrates, and the pronunciation signal can be adjusted through the feedback current (voltage) parameters to make the output of the sound source more stable and accurate.

To sum up, in the technical solution provided by the embodiment of the present application, when the energized diaphragm 100 vibrates under the magnetic field of the magnet 200, it vibrates into the sound emitting cavity 300 and outside the sound emitting cavity 300, and the sound waves before and after the diaphragm 100 will not Offset, so that the bass will not be lost, and the full-range coverage can be achieved with a smaller volume.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (23)

1. A pronunciation unit is characterized in that, comprising:

   The diaphragm, the diaphragm has a first structure, the first structure has at least one sounding cavity, and the sounding cavity has an opening; the diaphragm is provided with a plurality of magnetic pole corresponding areas and a power circuit;

   A plurality of magnets, the plurality of magnets are arranged in a second structure matching the first structure; the plurality of magnets are respectively arranged corresponding to the corresponding regions of the magnetic poles, and the energized circuit is located adjacent to and facing the diaphragm between two magnets with opposite poles.
2. The pronunciation unit according to claim 1, further comprising a box body, the box body is a third structure matching the first structure, the diaphragm and the magnet are both arranged on the box body superior;

   The box body is provided with a sealing structure, and the sealing structure seals the opening of the sounding cavity, so that the sounding cavity is in a closed structure, and the sound emitted by the diaphragm is transmitted from the outside of the sounding cavity; or,

   The sealing structure is arranged outside the sounding cavity, the opening of the sounding cavity is open, and the sound emitted by the vibrating membrane is transmitted from the opening of the sounding cavity.
3. The pronunciation unit according to claim 1, wherein the plurality of magnets include a plurality of first sub-magnets and a plurality of second sub-magnets, and the first sub-magnets are directed toward the magnetic poles of the diaphragm and the plurality of sub-magnets. The magnetic poles of the second sub-magnet facing the diaphragm are opposite;

   A plurality of the first sub-magnets and a plurality of the second sub-magnets are arranged at intervals on the same side of the diaphragm; or, a plurality of the first sub-magnets and a plurality of the second sub-magnets are spaced and staggered disposed on opposite sides of the diaphragm.
4. The pronunciation unit according to claim 3, wherein when a plurality of the first sub-magnets and a plurality of the second sub-magnets are arranged on the same side of the diaphragm at intervals, the first sub-magnets and the plurality of second sub-magnets are arranged on the same side of the diaphragm. A sound insulation structure is provided between the second sub-magnets.
5. The pronunciation unit according to claim 1, wherein the plurality of magnets include a plurality of magnet groups, each of the magnet groups includes a pair of magnets opposite to each other, and each pair of magnets There is an opposing gap between them, and an electrical gap is set between the two magnet groups with opposite magnetic poles that are adjacent to each other;

   The vibrating membrane is disposed in the opposing gap, and the energizing circuit is arranged in the energizing gap.
6. The pronunciation unit according to any one of claims 1 to 5, wherein the first structure includes a cylindrical structure, a spherical structure, a U-shaped structure, a rectangular structure, a C-shaped structure, a J-shaped structure, and a B-shaped structure. One of structure and S-type structure; or

   The first structure includes a cylindrical structural section and a hemispherical structural section, at least one end of the cylindrical structural section is provided with the hemispherical structural section.
7. The pronunciation unit according to any one of claims 1 to 5, characterized in that it further comprises a plurality of magnetic conductors, the magnetic conductors are respectively adjacent to two magnets with opposite magnetic poles facing the diaphragm connect.
8. The pronunciation unit according to any one of claims 1 to 5, wherein the diaphragm comprises:

   at least one insulating film, on which a magnetic pole corresponding region is arranged;

   A plurality of conductive films, each of which is connected to at least one of the insulating films, the plurality of conductive films are arranged at intervals, and the magnetic pole corresponding regions are respectively provided on both sides of each of the conductive films;

   A plurality of connecting elements, through which the plurality of conductive films are connected in series to form an electric circuit.
9. The pronunciation unit according to claim 8, wherein the insulating film comprises one, and the insulating film comprises a first surface and a second surface arranged opposite to each other;

   A plurality of the conductive films are all connected to the first surface; or

   The plurality of conductive films include a plurality of first sub-films and a plurality of second sub-films, the plurality of first sub-films are arranged on the first surface, and the plurality of second sub-films are arranged on the On the second surface, the first sub-film is spaced apart from the second sub-film.
10. The sounding unit according to claim 8, wherein the insulating films include two stacked ones, and a plurality of conductive films are arranged between the two insulating films.
11. The sounding unit according to claim 10, characterized in that an insulating structure is provided between two adjacent conductive films.
12. The sounding unit according to claim 8, wherein the insulating film comprises a plurality of insulating films and the plurality of conductive films are sequentially connected at intervals.
13. The pronunciation unit according to claim 12, wherein the insulating film comprises a first surface and a second surface opposite to each other, and a side surface disposed between the first surface and the second surface;

    A plurality of the conductive films are all connected to the first surface; or, a plurality of the conductive films are connected to the side; or, the two sides of the conductive film are respectively provided with an insulating film, and the conductive film is connected to the first surface. The first surface of one of the insulating films is connected to the second surface of the other insulating film.
14. The sounding unit according to claim 8, wherein the communication member comprises a communication film disposed on the insulating film; or

    The connecting member includes a conductive wire.
15. The pronunciation unit according to claim 8, wherein a feedback wire is provided on the conductive film, and the feedback wire extends along the direction of current flow in the energized circuit.
16. The pronunciation unit according to claim 8, wherein each of the conductive films comprises a plurality of segmented films, and the plurality of segmented films all extend along the flow direction of the current in the energized circuit;

    A plurality of segmented films are distributed at intervals from one magnetic pole corresponding region to the other magnetic pole corresponding region.
17. The pronunciation unit according to claim 16, wherein the insulating film comprises one, and the insulating film comprises a first surface and a second surface arranged opposite to each other;

    A plurality of the segmented films are all connected to the first surface, and an insulating structure is provided between two adjacent segmented films; or

    The plurality of segmented films include a plurality of first sub-segment films and a plurality of second sub-segment films, the plurality of first sub-segment films are arranged on the first surface, and the plurality of second sub-segment films The segment film is arranged on the second surface, and the first sub-segment film is spaced apart from the second sub-segment film.
18. The sounding unit according to claim 16, wherein the insulating films include two stacked, and a plurality of segmented films are provided between the two insulating films.
19. The sounding unit according to claim 18, characterized in that an insulating structure is provided between two adjacent segmented films.
20. The sounding unit according to claim 16, characterized in that, from one said magnetic pole corresponding area to the other said magnetic pole corresponding area, the dimensions of a plurality of said segmented films are equal, or the closer to said magnetic pole corresponding area, the larger the size of the segmented membrane.
21. An audio equipment, characterized by comprising: a main body of the equipment and the pronunciation unit according to any one of claims 1 to 20 arranged on the main body of the equipment.
22. The audio equipment according to claim 21, further comprising a signal input circuit, a signal amplifier and a feedback circuit;

    The signal input circuit is connected to the signal amplifier, and the signal amplifier is connected to the pronunciation unit;

    The feedback circuit is respectively connected to the feedback wire on the conductive film in the sounding unit and the signal amplifier, and is used to feed back the vibration frequency of the diaphragm in the sounding unit to the signal amplifier.
23. A pronunciation unit is characterized in that, comprising:

    The diaphragm, the diaphragm has a first structure, the first structure has at least one sounding cavity, and the sounding cavity has an opening; the diaphragm is provided with a plurality of magnetic pole corresponding regions and a plurality of conductive regions, and a plurality of The conductive areas are connected in series to form an energized circuit;

    A plurality of magnets, the plurality of magnets are arranged in a second structure matching the first structure; the plurality of magnets are respectively arranged corresponding to the corresponding regions of the magnetic poles, and the energized circuit is located adjacent to and facing the diaphragm between two magnets with opposite poles.

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