CN118264945A - Pronunciation unit and sound equipment - Google Patents

Abstract

The embodiment of the application provides a sound producing unit and sound equipment, wherein the sound producing unit comprises: at least one pair of magnets, an insulating film, and an electrical conductor. Each pair of magnets are arranged in homopolar opposition, and an opposition gap is arranged between each pair of magnets; the insulating films penetrate through the opposite gaps, and each pair of magnets is symmetrically distributed on two sides of the insulating films; a conductor provided on the insulating film and located in the opposing gap; when the conductor vibrates at high frequency, the conductor vibrates to sound; when the conductor vibrates at low frequency, the conductor drives the whole insulating film to vibrate and sound together. In the technical scheme provided by the embodiment of the application, when the conductor vibrates at high frequency, the conductor vibrates singly, and when the conductor vibrates at low frequency, the conductor drives the insulating film to vibrate together, the insulating film vibrating together provides partial gain compensation for the bass, so that the loss of partial bass due to diffraction phenomenon is counteracted, the sound pressure level of the bass is improved, and the sound pressure level of the sound generating unit from the bass to the treble is stable.

Description

Pronunciation unit and sound equipment

Technical Field

The application relates to the technical field of speakers, in particular to a sound generating unit and sound equipment.

Background

With the development of technology, a ribbon loudspeaker is more true and pure in treble sound, and has smaller distortion, so that the ribbon loudspeaker is popular to users, and the principle is that an audio current is applied to a conductive film placed in a uniform magnetic field, and when the conductive film after being electrified passes through the magnetic field, the conductive film is acted by the magnetic field. By changing the direction and the magnitude of the audio current, the direction and the magnitude of the magnetic field force applied to the conductive film are also changed, so that the conductive film can vibrate at a certain frequency under the action of the magnetic field force, and the conductive film can make sound.

However, the sound wave generated by the vibration of the conductive film can generate diffraction phenomenon at the edge of the conductive film, so that partial sound wave front and back offset is caused, and the bass offset is more because the bass is easier to diffract in the propagation process. Therefore, when the conductive film vibrates and sounds, the sound pressure level (SPL curve) from low to high is unstable, so that a belt type loudspeaker is selected as a high-pitch element in the design of some sound equipment, the bass effect is enhanced by adding other low-frequency sound generating devices, the whole design is complex, the sound generating elements are added, the tone colors of the sound generating elements made of different materials are different, the same tone color is difficult to keep in the whole frequency domain, and the using texture of a user of the sound equipment is reduced. Meanwhile, in the traditional sound equipment, the existence of the box body loses the truest and pure sound. Moreover, the traditional sound can be regarded as a surface sound source when the cone or the diaphragm sounds, in particular to the traditional static sound, the huge static panel drives the whole surface film to vibrate and sound, the surface sound source sounds with directivity, the frequency response of the loudspeaker is different at different angles deviating from the axis, and the larger the angle deviating from the axis is, the more high-frequency attenuation is, so that the stability of the SPL (Sound Pressure Level is called sound pressure level) curve is greatly influenced.

Disclosure of Invention

The present application has been made in view of the above-described problems, and provides a sound producing unit and an acoustic apparatus that solve the above-described problems.

In one embodiment of the present application, there is provided a sound producing unit including:

At least one pair of magnets, wherein each pair of magnets is arranged in homopolar opposition, and an opposition gap is arranged between each pair of magnets;

The insulating films penetrate through the opposite gaps, and each pair of magnets is symmetrically distributed on two sides of the insulating films;

A conductor provided on the insulating film and located in the opposing gap;

Wherein when the conductor vibrates at a high frequency, the conductor vibrates to sound; when the conductor vibrates at low frequency, the conductor drives the insulating film to vibrate and sound together.

Optionally, the electrical conductor is adhered to the insulating film by gluing.

Optionally, a stiffener structure is also included;

the rib structure penetrates through the insulating film and is used for driving the insulating film to vibrate together when the conductor vibrates.

Optionally, the stiffener structure includes: a set of tendons extending in at least one direction;

the force rib group comprises a plurality of force ribs which are distributed at intervals.

Optionally, the reinforcing bars comprise one of carbon fiber materials, metal materials, plastic materials, wood materials and high polymer materials;

optionally, the rib is a rib structure formed by bending the insulating film;

or the rib structure is integrally formed on the insulating film when the insulating film is prepared.

Optionally, the electric conductor is a conductive wire;

or the conductor is a conductive film.

Optionally, the device further comprises an elastic suspension assembly, wherein one end of the elastic suspension assembly is connected with the insulating film, and the other end of the elastic suspension assembly is connected with the magnet or the shell of the sound generating unit.

Optionally, the elastic suspension component is arranged on one side of the insulating film;

or the elastic suspension components are arranged on two sides of the insulating film.

Optionally, the elastic suspension assembly includes a plurality of elastic members arranged along a length direction of the insulating film.

Optionally, the elastic element includes one of a linear structure, an M-shaped structure, a V-shaped structure, a C-shaped structure, an arc-shaped structure, a wave-shaped structure, a zigzag structure, a spiral structure, and a ring structure.

In another embodiment of the present application, there is provided a sound producing unit including:

At least one pair of magnets, wherein each pair of magnets is arranged in homopolar opposition, and an opposition gap is arranged between each pair of magnets;

The insulating films penetrate through the opposite gaps, and each pair of magnets is symmetrically distributed on two sides of the insulating films;

a conductor provided on the insulating film to form a diaphragm, the conductor being located in the opposing gap;

The electric conductor is an active sound generating part of the sound generating unit, and when the electric conductor passes through the electric conductor, the active sound generating part drives the insulating film to vibrate and generate sound together.

Optionally, the electrical conductor is adhered to the first face of the insulating film;

or different conductors are respectively adhered to the first surface and the second surface of the insulating film;

The conductor is adhered to the insulating film by adhesion.

Alternatively, the process may be carried out in a single-stage,

And a plurality of layers of insulating films and a plurality of layers of conductors are mutually laminated and adhered into a whole, and the conductors positioned on different layers are mutually and electrically connected.

Optionally, the device further comprises an elastic suspension assembly, wherein one end of the elastic suspension assembly is connected with the insulating film, and the other end of the elastic suspension assembly is connected with the magnet or the shell of the sound generating unit.

Optionally, the elastic suspension assembly is connected to the first face of the insulating film;

Or the first surface and the second surface of the insulating film are connected with the elastic suspension assembly.

Optionally, the edge of the insulating film is cut and bent to form a supporting structure, and the supporting structure is the elastic suspension assembly.

Optionally, the elastic suspension components are respectively connected with two side edges of the insulating film;

or the elastic suspension components are connected to the peripheral side edges of the insulating film.

In still another embodiment of the present application, an audio device is provided, including a housing and the above-mentioned sound unit;

The sound producing unit is arranged on the shell.

According to the technical scheme provided by the embodiment of the application, the rib structure is arranged on the insulating film, so that the conductor only drives part of the insulating film to vibrate when vibrating at high frequency, and the whole insulating film is driven to vibrate together in the low-frequency vibration process, so that partial gain compensation is provided for low-frequency sound, and the sound pressure level of the whole range is stable when the sound producing unit produces low-frequency sound and high-frequency sound.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic front view of a first pronunciation unit according to an embodiment of the present application;

FIG. 2 is a schematic left-view diagram of a first pronunciation unit according to the embodiment of the present application;

FIG. 3 is a schematic diagram of the magnetic field distribution of opposing magnets provided by an embodiment of the present application;

fig. 4 is a schematic front view of a second pronunciation unit according to an embodiment of the present application;

FIG. 5 is a top view of a diaphragm according to an embodiment of the present application;

fig. 6 is a schematic front view of a third pronunciation unit according to an embodiment of the present application;

fig. 7 is a schematic front view of a fourth pronunciation unit according to the embodiment of the present application;

fig. 8 is a schematic front view of a fifth pronunciation unit according to the embodiment of the present application;

FIG. 9 is a schematic partial front view of a sixth sound unit according to an embodiment of the present application;

FIG. 10 is a schematic view of a portion of a seventh pronunciation unit according to the embodiment of the present application;

FIG. 11 is a schematic top view of a portion of an eighth sound unit according to an embodiment of the present application;

FIG. 12 is a schematic top view of a portion of a ninth sound unit according to an embodiment of the present application;

FIG. 13 is a schematic top view of a tenth sound unit according to an embodiment of the present application;

FIG. 14 is a schematic top view of a portion of an eleventh sound unit according to an embodiment of the present application;

FIG. 15 is a schematic view of a portion of a twelfth pronunciation unit according to the embodiment of the present application;

FIG. 16 is a schematic view of a portion of a thirteenth sound unit according to an embodiment of the present application;

FIG. 17 is a schematic view of different listening angles of a conventional audio device;

FIG. 18 is a graph showing frequency response curves corresponding to different listening angles of a conventional audio device;

Fig. 19 is a frequency response chart corresponding to different listening angles of an audio device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. In addition, in the embodiment of the present application, plural means two or more. Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction.

It is known that the diaphragm of a loudspeaker can emit sounds of different frequencies by vibrating at different frequencies during the vibration process, for example, when the diaphragm vibrates at a high frequency, a high-frequency sound can be emitted, and when the diaphragm vibrates at a low frequency, a low-frequency sound can be emitted. Since the ribbon speaker does not have a case to separate sound waves from the front and rear of the diaphragm, the diaphragm generates diffraction phenomenon during sound emission. The diffraction phenomenon means that when the diaphragm vibrates, sound waves are generated on the front side and the back side of the diaphragm, and when the sound waves on the back side of the diaphragm diffract to the front side of the diaphragm, a counteracting effect is generated on the sound waves on the front side of the diaphragm, so that the sound pressure level of the diaphragm is reduced. The diffraction phenomenon of the low frequency sound is more serious than that of the high frequency sound, which makes the sound pressure level of the low frequency sound obtained at the listening position of the diaphragm lower than that of the high frequency sound when the diaphragm sounds, and this makes the sound pressure level of the loudspeaker unstable when the low frequency sound and the high frequency sound are emitted. In order to solve the problems, the application provides a sound producing unit and an acoustic device.

Fig. 1 is a schematic front view of a first pronunciation unit according to an embodiment of the present application, and fig. 2 is a schematic left view of the first pronunciation unit according to an embodiment of the present application. Referring to fig. 1 and 2, in one embodiment of the present application, there is provided a pronunciation unit including: at least one pair of magnets 1, an insulating film 2, and an electrical conductor 3. Each pair of magnets 1 is disposed in homopolar opposition with an opposition gap between each pair of magnets 1. Specifically, the magnet 1 generally has an N pole (north pole) and an S pole (south pole), and the like-pole opposition referred to herein means that the two magnets 1 are disposed opposite to each other with the polarities of the poles facing each other being the same. The opposing poles do not lie against each other but have a gap to create an effective magnetic field. As shown in fig. 3, when the same poles of the two magnets 1 are opposed, the magnetic fields of the two magnets 1 will affect each other so that the magnetic fields of the two magnets 1 concentrate at the opposed gap and the magnetic field direction is biased to be approximately perpendicular to the magnets 1. This arrangement is advantageous in concentrating the magnetic field of the two magnets 1 in the opposing gap, thereby effectively increasing the magnetic field strength at the opposing gap.

Referring to fig. 1 to 4, the insulating film 2 is penetrated in the opposite gap, each pair of magnets 1 is symmetrically distributed on both sides of the insulating film 2, a certain gap is formed between each magnet 1 and the insulating film 2, and the gap between each magnet 1 and the insulating film 2 is the same. The gap between the two magnets 1 and the insulating film 2 together forms an opposing gap. The conductor 3 is disposed on the insulating film 2 and is located in the opposing gap, and when a current flows through the conductor 3, the conductor 3 receives a magnetic field force, and when the current is an audio current of a certain frequency, the conductor 3 also vibrates at the certain frequency. Since the conductor 3 is in adhesive connection with the insulating film 2, the insulating film 2 is driven to vibrate when the conductor 3 vibrates, and the efficiency of driving the insulating film 2 to vibrate depends on the vibration frequency of the conductor 3, when the vibration frequency of the conductor 3 is high, the smaller the vibration amplitude conducted to the insulating film 2, that is, the smaller the region driving the insulating film 2 to vibrate, and when the vibration frequency of the conductor 3 is low, the larger the vibration amplitude driving the insulating film 2, that is, the larger the region driving the insulating film 2 to vibrate. The materials of the insulating film 2 include, but are not limited to: spandex net, butyl film, glass fiber film, carbon fiber cloth, nylon net, graphene, polymer film, composite material formed by various films, and the like. The insulating film 2 mentioned in the present application is a difference between insulation and non-insulation with respect to the conductor portion, and is independent of whether or not the material itself is insulated. In a specific embodiment, the insulating film 2 may also be formed by combining a spandex net with glue, specifically, by coating the entire net surface of the spandex net with glue to form the glue layer 21, the glue may bond the electric conductor with the spandex net, and may also plug holes in the spandex net to form the complete insulating film 2. In another embodiment, the aluminum alloy film can also be a composite material film formed by laminating a butyl adhesive film and a thin aluminum film. Specifically, a thin aluminum film is fully adhered to both sides of a butyl film as a base film, and a circuit, that is, the conductor 3 is engraved on the formed film body by using a laser engraving technique. The film body outside the circuit area is the insulating film 2, and in this case, although the material of the insulating film 2 is a conductor in the present application, the insulating film 2 is not energized when the diaphragm vibrates, so the distinction between the insulating film 2 and the conductor 3 is mainly determined by whether or not the energization is performed, and the material property of the film body is not directly indicated.

In the embodiments of the present application, the conductor 3 is adhered to the first surface of the insulating film 2 (one surface of the insulating film). Alternatively, the different conductors are adhered to the first surface and the second surface of the insulating film, respectively, and it is understood that the conductors 3 are provided on both the front and back surfaces of the insulating film 2. Further, or inside the insulating film 2, a conductor 3 is provided. The combination of the insulating film 2 and the conductor 3 can be regarded as a diaphragm.

Further, referring to fig. 1 to 4, in one embodiment provided by the present application, the electrical conductor 3 is adhered to the insulating film 2 by glue, and the glue has a certain viscoelasticity. In this case, when the conductor 3 vibrates at a high frequency, the amplitude of the conductor 3 due to the high frequency vibration is small and the frequency is high. When the vibration is transmitted to the adhesive layer 21 formed by the adhesive glue, the energy is converted into heat energy in the adhesive layer to be dissipated, so that the vibration cannot be transmitted to the insulating film, and therefore, in this case, the conductor 3 cannot drive the insulating film 2 to vibrate and sound. In another case, when the conductor 3 vibrates at a lower frequency, the vibration cannot be absorbed by the adhesive layer 21 in time due to the large amplitude and low frequency of the conductor 3, so that the conductor 3 can drive the insulating film 2 to vibrate and sound together. Thus, the vibrating diaphragm surface for vibration sound production becomes a combination of the insulating film 2 and the conductor 3.

In one embodiment of the present application, the multilayer insulating film 2 and the multilayer conductor 3 are laminated and bonded to each other to be integrated, and conductors in different layers are electrically connected to each other. Specifically, a plurality of insulating films 2 and a plurality of layers of conductors 3 are stacked on each other and bonded to each other to form a single diaphragm, and the conductors 3 of different layers are electrically connected to each other, and may be connected in series or in parallel with each other.

Referring to fig. 1 to 5, in one embodiment provided by the present application, the conductor 3 may be a metal wire or a conductive film. The conductor 3 includes a multi-stage main circuit 31 and a multi-stage connection circuit 32, and the multi-stage connection circuit 32 connects the multi-stage main circuit 31 in order to form a complete circuit. The plurality of main circuits 31 are arranged at intervals on the insulating film 2 located in the opposing gap, and the connection circuits 32 are arranged on both end sides of the main circuits 31. In fig. 4, for example, when current flows through the conductors 3, the current direction in the left conductor 3 is opposite to the current direction in the right conductor 3. The number of main circuits 31 on the insulating film is not particularly limited, and may be set according to practical situations. In addition, the main circuit 31 and the multi-section connection circuit 32 may be a complete conductive wire or conductive film, or may be formed by connecting multiple sections of conductive wires or conductive films, which is not limited by the present application.

Further, as shown in fig. 2, due to the interaction of the homopolar opposing magnets 1, the magnetic field strength of the first region 12 in the opposing gap is greater than the magnetic field strength of the second region 11 in the opposing gap, and the magnetic field of the magnets 1 will form an effective magnetic field region on the insulating film penetrating the opposing gap, the effective magnetic field region being located within the first region 12. The main circuit 31 is disposed on the effective magnetic field region provided on the insulating film 2 so that the magnetic field effect exerted on the main circuit 31 is most effective. In one embodiment of the present application, the conductor 3 is a metal wire, which is spirally disposed on the insulating film 2, and the main circuits 31 of the metal wire are linearly distributed in the effective magnetic field area on the insulating film 2, and the connection circuits 32 are disposed at both end sides of the main circuits 31 to connect the different main circuits 31. The metal wire conductor 3 is then bonded to the insulating film 2 by means of a glue layer. Under the condition of high-frequency vibration, only the metal wire vibrates and sounds at the moment because the adhesive layer can absorb the vibration with high frequency and low amplitude. When the metal wire vibrates at low frequency, the adhesive layer cannot absorb vibration with low frequency and high amplitude, so that the metal wire drives the insulating film to vibrate and sound together in the vibration process.

Further, in another embodiment of the present application, the conductor 3 is a conductive film, for example, a layer of material of the conductor 3 is adhered on the insulating film 2, and then a complete circuit is etched by etching or laser engraving to form a conductive circuit.

For the insulating film 2 with a certain length and flexibility, although the insulating film 2 can be driven to vibrate and sound when the electric conductor 3 vibrates at a low frequency, the insulating film 2 near the electric conductor 3 can only be driven to vibrate and sound, and the electric conductor 3 cannot effectively drive the whole insulating film to vibrate and sound. In order to obtain a higher efficiency at low frequency vibrations. In an embodiment of the present application, referring to fig. 1, fig. 4 and fig. 5, the insulating film 2 further includes a rib structure, so that the whole flexible film needs to have a certain rigidity, so that under the low frequency condition, the part of the insulating film 2 vibrating together with the conductor 3 can drive the insulating film with a larger area to vibrate together through the rib structure, thereby improving the sound pressure level of the diaphragm bass. In addition, the rib structure penetrates through the insulating film, and can be arranged on the surface of the insulating film 2 and can be arranged in the insulating film 2.

In one embodiment provided by the present application, a stiffener structure comprises: the rib group extending along at least one direction, as shown in fig. 5, the rib structure includes a transverse rib group and a longitudinal rib group, which are interlaced with each other, and the extending direction of the transverse rib group is in the same direction as the width direction of the insulating film 2, and the extending direction of the longitudinal rib group is in the same direction as the length direction of the insulating film 2. The number of the rib groups extending in different directions on the insulating film 2 may be set according to actual conditions, and the present application is not particularly limited. For example, in one embodiment, the insulating film 2 is provided with not only the transverse rib groups and the longitudinal rib groups but also the oblique rib groups, and the rib groups are interwoven to form a mesh structure, so as to play a role of supporting the flexible insulating film 2. In the technical scheme provided by the application, the reinforcement groups in multiple directions are mutually interwoven on the insulating film 2, so that the whole flexible insulating film 2 has certain rigidity.

Further, the rib group comprises a plurality of ribs which are arranged at intervals. Referring to fig. 5, in a specific embodiment, the transverse rib group includes a plurality of transverse ribs 24, and the plurality of transverse ribs 24 are equidistantly arranged on the insulating film 2. The longitudinal force rib group comprises two longitudinal force ribs 23, the two longitudinal force ribs 23 are respectively arranged on the insulating film 2, and the electric conductor 3 is arranged between the two longitudinal force ribs 23. In the technical scheme provided by the application, the reinforcing bars comprise one of carbon fiber materials, metal materials, plastic materials, wood materials, high polymer materials and the like, and the reinforcing bars can be used as manufacturing materials of the reinforcing bars as long as the reinforcing bars have certain toughness and supporting property and can support the whole insulating film 2.

In order to simplify the structure of the insulating film 2, in another embodiment provided by the present application, the ribs are rib structures formed by bending the insulating film 2. Specifically, by folding the insulating film 2 to form a rib structure on the insulating film 2, the rib structure will play a certain supporting role for the insulating film 2. The cross-sectional shape of the rib structure includes, but is not limited to, triangular, V-shaped, W-shaped, arcuate, circular, square, polygonal, etc. In another embodiment provided by the application, the stiffener structure is integrally formed on the insulating film 2 when the insulating film 2 is prepared.

In one embodiment of the present application, in order to realize that the insulating film 2 vibrates at a low frequency, a portion of the insulating film 2 near the conductor 3 drives the entire insulating film 2 to vibrate together. In addition to the fact that the flexible insulating film 2 has a certain rigidity by the rib structure, the insulating film 2 having a certain rigidity may be used in a specific implementation. For example, the insulating film 2 may be a hard structure having a certain toughness, including but not limited to: carbon fiber sheet, plastic sheet, resin sheet, and polymer composite sheet.

In order to fix the diaphragm at a corresponding position and provide a certain restoring force when the diaphragm vibrates, the sound generating unit provided by the application further comprises an elastic suspension assembly 5, one end of the elastic suspension assembly 5 is connected with the insulating film 2, and the other end is connected with the magnet 1 or the shell 4 of the sound generating unit. Specifically, after the diaphragm is displaced when being vibrated by the magnetic field force, the elastic suspension assembly 5 is stretched, and after the magnetic field force is removed, the restoring force generated by the elastic suspension assembly 5 enables the diaphragm to return to the original position.

Referring to fig. 6, in one embodiment provided by the present application, the elastic suspension assembly 5 is disposed on one side of the insulating film 2, and specifically, the elastic suspension assembly 5 includes two elastic suspension members symmetrically disposed, and the two elastic suspension members are disposed on both sides of one of the magnets 1, and one end of each elastic suspension member is connected to the insulating film 2 and the other end of each elastic suspension member is connected to the magnet 1, or is connected to the housing 4 connected to the magnet 1. The end connected to the insulating film 2 may be connected to the insulating film 2 or may be connected to a rib structure of the insulating film 2.

Referring to fig. 6 to 14, the elastic suspension assembly 5 has various embodiments, and the elastic suspension assembly 5 may be disposed on the surface of the insulating film 2 or may be disposed on the side of the insulating film 2. For example, fig. 6, 7 and 10, the elastic suspension member 5 is disposed perpendicularly to the surface of the insulating film 2. For another example, fig. 9, the elastic suspension member 5 may have one end connected to a fixed position of the housing of the sound unit or the like and the other end connected to the insulating film 2 at an angle to the surface of the insulating film 2. Thus, the elastic suspension member 5 can provide not only a force in the vertical direction but also a force in the horizontal direction (the length or width direction of the insulating film), as in the X direction in fig. 10. The force in the vertical direction can assist the vibrating diaphragm to recover to the middle position, and the force in the horizontal direction can enable the vibrating diaphragm to always maintain certain tension. Also, for example, in fig. 10, the elastic suspension units 5 are provided in the same direction as the length or width direction (X direction in fig. 10) of the insulating film 2, and one end of each elastic suspension unit 5 may be connected to the surface of the insulating film 2 or may be connected to the side of the insulating film 2.

Referring to fig. 14, in another example provided by the present application, a connection portion 27 is provided on the insulating film 2 or the diaphragm formed by combining the insulating film 2 and the conductive body 3, and the elastic suspension member 5 is connected to the insulating film 2 or the diaphragm through the connection portion 27. In a specific embodiment, the connection portion 27 is a connection hole, and the elastic member is connected through the connection hole, so as to suspend the diaphragm in the middle of the opposite gap.

Referring to fig. 1 to 4, in another embodiment provided by the present application, in order to make the connection of the insulating film 2 more stable, both sides of the insulating film 2 are provided with elastic suspension members 5. Specifically, the elastic suspension assemblies 5 include two groups of elastic suspension assemblies 5 distributed on two sides of the insulating film 2 and symmetrically arranged, one ends of the different groups of elastic suspension assemblies 5 are respectively connected to the first surface and the second surface of the insulating film 2, and the other ends of the different groups of elastic suspension assemblies are respectively connected to different magnets 1 or to the housing 4 connected with the magnets 1. In order to ensure the stability of the connection of the elastic suspension assembly 5 to the insulating film 2, the elastic suspension assembly 5 may be connected to the stiffener structure, more specifically at the intersection of the transverse stiffener group and the longitudinal stiffener group.

Further, referring to fig. 11 to 13, the elastic suspension assembly 5 includes a plurality of elastic members arranged along the length direction of the insulating film 2. Or a plurality of elastic members are provided at four corners of the insulating film 2. Specifically, referring to fig. 11 and 12, a plurality of elastic members are connected to the insulating film 2 at both sides of the insulating film 2, and the plurality of elastic members may be arranged at intervals or zigzag. For another example, referring to fig. 13, elastic members are provided at four corners of the insulating film 2. Whether the elastic member is disposed at an angle to the insulating film 2 may be implemented according to the technical scheme shown in fig. 8 or according to the technical scheme shown in fig. 9 or 10.

In an embodiment of the present application, the elastic member includes one of a linear structure, an M-shaped structure, a V-shaped structure, a C-shaped structure, an arc-shaped structure, a wave-shaped structure, a zigzag structure, a spiral structure, and a ring-shaped structure. For example, referring to fig. 1 and 2, the elastic suspension assembly 5 has a linear structure, and different elastic suspension members are distributed on different sides of the insulating film 2, so that two elastic forces in different directions can be provided to the insulating film 2, so that the insulating film 2 can return to the initial position after vibration is completed. As shown in fig. 2, from the left view of the sounding unit, different linear elastic suspension members are arranged in a V-shaped structure, one ends of the elastic suspension members are connected to the longitudinal force rib groups, and the elastic suspension members are connected to different longitudinal force ribs 23 through a plurality of groups of elastic suspension members 5, so that when the insulating film 2 is displaced, the stress of the insulating film 2 is more uniform by the plurality of groups of elastic suspension members 5, and inertia shaking is effectively reduced. Referring to fig. 7, the elastic suspension members 5 have a zigzag structure, and both ends of each elastic suspension member are connected to the housing 4 and the insulating film 2, respectively.

Further, the elastic suspension assembly 5 includes, but is not limited to: carbon fiber filaments, rubber, elastic metal filaments, springs, spandex filaments, and the like. In the technical scheme provided by the application, the elastic suspension assembly can also be a supporting structure formed by bending the insulating film 2 or the vibrating diaphragm. Specifically, a long strip-shaped supporting structure with one end connected to the insulating film 2 is formed at the edge of the insulating film 2 through cutting, the supporting structure extends above or below the insulating film 2 after bending, and the tail end of the supporting structure is connected to the magnet or the shell of the sound generating unit. So that the diaphragm is supported or suspended in a middle position of the opposing gap. Further, the support structure is provided with elasticity by bending the support structure to form a structure including but not limited to a C-type Z-type M-type structure.

Referring to fig. 5 and 8, in one embodiment of the present application, the sound generating unit includes two pairs of magnets 1, an insulating film 2, and an electrical conductor 3. The N poles of the first pair of magnets 1 are arranged in a homopolar opposition manner, the S poles of the second pair of magnets 1 are arranged in a homopolar opposition manner, an opposition gap is formed between each pair of magnets 1, an insulating film 2 is arranged between the opposition gaps of the two pairs of magnets 1 in a penetrating manner, and an electric conductor 3 is arranged on a part of the insulating film positioned in the opposition gap, wherein the electric conductor 3 comprises a first electric conductor and a second electric conductor. Specifically, as shown in fig. 8, a first conductor is provided between the magnet groups opposing N poles, a second conductor is provided between the magnet groups opposing S poles, and then the first conductor and the second conductor are connected in series or in parallel. Of course, the first conductor and the second conductor may be integrally connected. Also the electrical conductor 3 comprises a multi-segment main circuit 31 and a multi-segment connection circuit 32, which embodiment is similar to the electrical conductor 3 described in the above embodiments and is not described in detail here.

Referring to fig. 1 to 12, in one embodiment provided by the present application, a sound generating unit includes at least a pair of magnets 1, an insulating film 2, and an electrical conductor 3. Each pair of magnets 1 is disposed in homopolar opposition with an opposition gap between each pair of magnets 1. The insulating film 2 is disposed in the opposing gap, and each pair of magnets 1 is symmetrically disposed on both sides of the insulating film 2. The conductor is provided on the insulating film 2, and is a conductive circuit in a disc shape surrounding the opposing magnet. Specifically, referring to fig. 14 in combination, the diaphragm is entirely composed of an inner butyl film plus a double-sided aluminum film, and an outer aluminum film circuit portion is engraved as an electric conductor 3 by design using a laser engraving technique, while the remaining non-energized portion forms an insulating film 2. The conductor 3 is a driving sound emitting part of the sound emitting unit, and the insulating film 2 is a driven sound emitting part. When the conductor 3 vibrates at a high frequency, the active sound emitting portion vibrates to emit sound. When the electric conductor 3 vibrates at low frequency, the driving sound generating part drives the driven sound generating part to vibrate and generate sound together.

Specifically, when current passes through the conductor 3, the vibrating diaphragm in the corresponding region vibrates and drives the surrounding insulating film 2 to vibrate, and when the vibration frequency is lower, the area of the conductor 3 which vibrates and drives the insulating film 2 is larger, the vibration frequency is higher, and the area of the conductor 3 which vibrates and drives the insulating film 2 is smaller. In one case, for example, the conductor 3 may drive the whole diaphragm to vibrate when vibrating below a certain frequency, and the insulating film 2 is not driven by the conductor 3 at all when vibrating above a certain frequency. In another case, the area of the conductor 3 driving the insulating film 2 at the same frequency is determined by the following factors that may affect the flatness of the diaphragm (which may be understood as hardness), the weight of the insulating film 2, the bonding manner between the conductor 3 and the insulating film 2, and the like. It can be understood that the stronger the rigidity of the diaphragm is, the larger the area of the insulating film 2 that can be driven by the vibration of the conductor 3 is, the more tightly the bonding between the conductor 3 and the insulating film 2 is, the larger the area of the insulating film 2 that can be driven by the vibration of the conductor 3 is, the lighter the weight of the insulating film 2 is, and the larger the area of the insulating film 2 that can be driven by the vibration of the conductor 3 is.

The multilayer insulating film 2 and the multilayer conductor 3 are laminated and bonded to each other to be integrated, and conductive circuits in different layers are electrically connected to each other.

Referring to fig. 1 to 13, in one embodiment provided by the present application, the sound unit further comprises an elastic suspension assembly 5. One end of the elastic suspension assembly 5 is connected to the insulating film 2, and the other end is connected to the magnet 1 or the housing of the sound unit. The elastic suspension assembly 5 is always in a stretched or compressed state, and the elastic force generated by the elastic suspension assembly not only can suspend the insulating film in the middle position of the opposite gap, but also can enable the vibrating diaphragm to quickly return to the middle position after vibrating.

Further, an elastic suspension member 5 is attached to the first face of the insulating film 2. Or the first and second surfaces of the insulating film 2 are connected with the elastic suspension members 5. The elastic suspension members 5 are connected to both side edges of the insulating film 2 or the conductive body 3, respectively. Or the elastic suspension assembly 5 is connected to the peripheral side edges of the insulating film 2 or the electric conductor 3.

For a more specific embodiment of the elastic suspension assembly 5, reference may be made to the elastic suspension assembly 5 described in the other embodiments above, and a detailed description thereof will not be provided here.

Referring to fig. 14, in one embodiment of the present application, a connection portion 27 is provided on a diaphragm formed by connecting the insulating film 2 and the conductive body 3, and the elastic suspension assembly 5 is connected to the diaphragm through the connection portion 27. Specifically, the connecting portion 27 is disposed at the edge of the diaphragm, i.e. at the edges of both sides of the diaphragm, or at the edges of the periphery of the diaphragm. In one embodiment, the connection portion 27 is a through hole, and the number of the through holes can be set according to the length or the width of the diaphragm, which is not particularly limited. The elastic member in the elastic suspension assembly 5 has one end connected to the through hole and the other end connected to the magnet 1 or the housing of the sound unit. Therefore, the vibrating diaphragm is suspended on the middle position of the opposite gap, and meanwhile, an elastic force is provided for the vibrating diaphragm, and the vibrating diaphragm can quickly return to the middle position after vibrating.

In another embodiment of the present application, an audio device is provided, which includes a housing and the above-mentioned sound unit, where the sound unit is disposed on the housing. The audio devices include, but are not limited to, headphones, loudspeakers, speakers, and the like. The elastic suspension assembly may be connected to the housing of the sound unit in addition to the magnet. In addition, the implementation manner of the pronunciation unit can refer to and refer to the content in the above embodiment, and will not be described in detail herein.

Traditional sound equipment is a face sound source when vibrating and sounding through a cone or a whole film. The sound emitted by the surface sound source has strong axial direction, namely, the larger the angle deviating from the axis of the sound emitting surface is, the more the high-frequency sound is attenuated. Referring to fig. 17, the direction of line D is the direction of the sound emitting surface axis, the direction of line E is the direction of 30 degrees included angle with the sound emitting surface axis, and the direction of line F is the direction of 60 degrees included angle with the sound emitting surface axis. Referring to fig. 18, the three curves in the figure are frequency response curves at different angles to the sound emitting surface axis, respectively. As can be seen from the figure, the attenuation amount of the sound pressure level in the high frequency band is larger than the attenuation amount of the sound pressure level in the high frequency band in the direction of 30 degrees with respect to the sound emission surface axis (0 degree direction) with respect to the frequency response curve in the direction of 60 degrees with respect to the sound emission surface axis. In addition, the attenuation of the sound pressure level of the high-frequency band is larger along with the increase of the included angle.

However, in the technical scheme provided by the application, the conductive circuit is arranged on a small part of the area of the insulating film, the conductive circuit can be approximately regarded as a line when the conductive body 3 vibrates when the conductive circuit is electrified and vibrates at high frequency, a line sound source is formed when the line vibrates and sounds, and radiated sound can be uniformly distributed on a cylindrical surface taking the line sound source as an axis, so that the problem of sound pressure level attenuation of high-frequency sound at different angles is eliminated, and 360-degree omnidirectional sound equipment can be realized. Specifically, referring to fig. 19, three curves are frequency response curves of sound in different directions of the central axis of the audio device. It can be seen from the figure that the frequency response curves, whether at high, medium or low frequencies, which are derived at different angles, approximately coincide. Therefore, when the user is at different angles in the circumferential direction of the acoustic apparatus, the sound pressure level of each audio segment sound heard by the user is the same as the sound pressure level of the sound heard by the acoustic apparatus directly opposite to (in the axial direction of) the acoustic apparatus.

According to the technical scheme provided by the embodiment of the application, the rib structure is arranged on the insulating film, so that the conductor drives a small area even does not drive the insulating film to vibrate during high-frequency vibration, and drives a large area even the whole insulating film to vibrate together during low-frequency vibration, partial gain compensation is provided for low-frequency sound, and the sound pressure level of the whole sound range is stable during low-frequency sound and high-frequency sound emission of the sound emitting unit. In addition, through setting up elasticity and hanging the subassembly, not only can play fixed effect to the vibrating diaphragm, can also assist the vibrating diaphragm to resume to initial position after the vibration is accomplished to effectively guarantee the pronunciation effect of vibrating diaphragm.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (20)

1. A sound producing unit, comprising:

At least one pair of magnets, wherein each pair of magnets is arranged in homopolar opposition, and an opposition gap is arranged between each pair of magnets;

The insulating films penetrate through the opposite gaps, and each pair of magnets is symmetrically distributed on two sides of the insulating films;

A conductor provided on the insulating film and located in the opposing gap;

wherein when the conductor vibrates at a high frequency, the conductor vibrates to sound; when the conductor vibrates at low frequency, the conductor drives the whole insulating film to vibrate and sound together.

2. The sound generating unit according to claim 1, wherein the electric conductor is bonded to the insulating film by gluing;

the conductor is adhered to the first surface of the insulating film;

Or the different conductors are respectively adhered to the first surface and the second surface of the insulating film.

3. The sound generating unit according to claim 2, wherein a plurality of layers of said insulating film and a plurality of layers of said electric conductor are laminated and bonded to each other as a unit, and said electric conductors in different layers are electrically connected to each other.

4. The sound unit of claim 1, further comprising a stiffener structure;

the rib structure penetrates through the insulating film and is used for driving the insulating film to vibrate together when the conductor vibrates.

5. The sound unit of claim 4, wherein the tendon structure comprises: a set of tendons extending in at least one direction;

the force rib group comprises a plurality of force ribs which are distributed at intervals.

6. The sound generating unit of claim 5, wherein the tendons comprise one of carbon fiber material, metal material, plastic material, wood material, and polymer material.

7. The sound generating unit according to claim 5, wherein the rib is a rib structure formed by bending the insulating film;

or the rib structure is integrally formed on the insulating film when the insulating film is prepared.

8. The sound unit according to any one of claims 1 to 7, wherein the electrical conductor is a conductive wire;

or the conductor is a conductive film.

9. The sound unit as claimed in any one of claims 1 to 7, further comprising an elastic suspension member having one end connected to the insulating film and the other end connected to the magnet or the housing of the sound unit.

10. The sound unit of claim 9, wherein the elastic suspension member is provided at one side of the insulating film;

or the elastic suspension components are arranged on two sides of the insulating film.

11. The sound unit as claimed in claim 10, wherein the elastic suspension assembly includes a plurality of elastic members arranged along a length direction of the insulating film;

or the plurality of elastic pieces are arranged at four corners of the insulating film.

12. The sound generating unit of claim 11, wherein the elastic member comprises one of a straight line structure, an M-shape structure, a V-shape structure, a C-shape structure, an arc-shape structure, a wave-shape structure, a zigzag structure, a spiral structure, and a ring structure.

13. A sound producing unit, comprising:

At least one pair of magnets, wherein each pair of magnets is arranged in homopolar opposition, and an opposition gap is arranged between each pair of magnets;

The insulating films penetrate through the opposite gaps, and each pair of magnets is symmetrically distributed on two sides of the insulating films;

a conductor provided on the insulating film to form a diaphragm, the conductor being located in the opposing gap;

The electric conductor is an active sound generating part of the sound generating unit, and when the electric conductor passes through the electric conductor, the active sound generating part drives the insulating film to vibrate and generate sound together.

14. The sound generating unit according to claim 13, wherein the electrical conductor is bonded to the first face of the insulating film;

or different conductors are respectively adhered to the first surface and the second surface of the insulating film;

The conductor is adhered to the insulating film by adhesion.

15. The sound generating unit according to claim 14, wherein a plurality of layers of said insulating film and a plurality of layers of said conductor are laminated and bonded to each other as a unit, and said conductive circuits in different layers are electrically connected to each other.

16. A sound unit according to any one of claims 13 to 15, further comprising an elastic suspension assembly having one end connected to the insulating film and the other end connected to the magnet or the housing of the sound unit.

17. The sound unit of claim 16, wherein the resilient suspension assembly is attached to the first face of the insulating film;

Or the first surface and the second surface of the insulating film are connected with the elastic suspension assembly.

18. The sound unit as claimed in claim 16, wherein the support structure is formed by bending at the edge of the insulating film, the support structure being the elastic suspension member.

19. The sound generating unit according to claim 16, wherein the elastic suspension members are connected to both side edges of the insulating film, respectively;

or the elastic suspension components are connected to the peripheral side edges of the insulating film.

20. An acoustic apparatus comprising a housing and a sound unit according to any one of claims 1 to 19;

The sound producing unit is arranged on the shell.