CN117793590A

CN117793590A - Earphone and transduction device thereof

Info

Publication number: CN117793590A
Application number: CN202211154386.2A
Authority: CN
Inventors: 付峻江
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2024-03-29

Abstract

The utility model relates to a headset and transduction device thereof, transduction device includes first magnetizer, coil and magnet subassembly, the orthographic projection of coil on the reference plane encircles the periphery of the orthographic projection of at least part first magnetizer on the reference plane, the orthographic projection of magnet subassembly on the reference plane encircles the periphery of the orthographic projection of coil on the reference plane, the inboard at magnet subassembly orientation first magnetizer is fixed to the coil, coil and first magnetizer interval set up, the magnetic field interaction that produces after the coil input excitation signal and magnet subassembly formed makes first magnetizer and magnet subassembly take place relative motion. Therefore, the magnetic gap between the first magnetizer and the magnet assembly is reduced, the sensitivity of the transduction device is higher, the total mass of the first magnetizer serving as an output end is reduced to a certain extent, the sensitivity of the transduction device is improved, the displacement of the coil is reduced to a certain extent, and the risk that the outgoing line of the coil is pulled apart is reduced.

Description

Earphone and transduction device thereof

Technical Field

The application relates to the technical field of electronic equipment, in particular to an earphone and a transduction device thereof.

Background

With the continuous popularization of electronic devices, the electronic devices have become indispensable social and entertainment tools in daily life, and the requirements of people on the electronic devices are also increasing. The electronic equipment such as the earphone is widely applied to daily life of people, and can be matched with terminal equipment such as a mobile phone, a computer and the like for use so as to provide hearing feast for users. According to the working principle of the earphone, the earphone can be generally divided into an air-guide earphone and a bone-guide earphone; according to the way that the user wears the earphone, the earphone can be generally divided into a headset, an ear-hanging earphone and an in-ear earphone; wired headphones and wireless headphones can also be generally classified according to the manner of interaction between the headphones and the electronic device.

Disclosure of Invention

The embodiment of the application provides a transduction device, the transduction device includes first magnetizer, coil and magnet subassembly, the orthographic projection of coil on the reference plane of perpendicular to first reference direction encircles the periphery of the orthographic projection on the reference plane of at least partly first magnetizer, the orthographic projection of magnet subassembly on the reference plane encircles the periphery of the orthographic projection on the reference plane of coil, the inboard at magnet subassembly orientation first magnetizer is fixed to the coil, the coil sets up with first magnetizer at the interval in the second reference direction of perpendicular to first reference direction, the magnetic field interaction that produces after the coil input excitation signal and magnet subassembly formed makes first magnetizer and magnet subassembly take place relative motion.

The embodiment of the application provides an earphone, earphone include supporting component and with the core module that supporting component is connected, and supporting component is used for supporting the core module and wears to wearing the position, and the core module includes core casing and the transduction device of above-mentioned embodiment, core casing is connected with supporting component, transduction device sets up in the holding intracavity of core casing.

The beneficial effects of this application are: in the transduction device provided by the application, the coil is fixed on the inner side of the magnet assembly, which faces the first magnetizer, so that the magnetic gap between the first magnetizer and the magnet assembly is reduced, and the sensitivity of the transduction device is higher. Furthermore, as the first magnetizer does not need to carry the coil to vibrate together with the first magnetizer, the total mass of the first magnetizer serving as an output end is reduced to a certain extent, and the sensitivity of the transduction device is improved. In addition, as the coil does not vibrate along with the first magnetizer, the displacement of the coil is reduced to a certain extent, and the risk that the outgoing line of the coil is pulled apart is reduced, so that the reliability of the coil is improved.

Drawings

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

FIG. 1 is a schematic cross-sectional view of one embodiment of a transducer device provided herein;

FIG. 2 is a schematic top view of an embodiment of a transducer device provided herein;

FIG. 3 is a schematic cross-sectional view of an embodiment of a transducer device provided herein;

FIG. 4 is a schematic top view of an embodiment of a first vibration-transmitting sheet according to the present disclosure;

FIG. 5 is a schematic top view of an embodiment of a second vibration-transmitting sheet provided herein;

FIG. 6 is a schematic top view of an embodiment of a first vibration-transmitting sheet according to the present disclosure;

FIG. 7 is a schematic top view of an embodiment of a second vibration-transmitting sheet according to the present disclosure;

FIG. 8 is a schematic cross-sectional view of an embodiment of a transducer device provided herein;

FIG. 9 is a schematic cross-sectional view of an embodiment of a transducer device provided herein;

FIG. 10 is a schematic cross-sectional view of an embodiment of a transducer device provided herein;

FIG. 11 is a schematic cross-sectional view of an embodiment of a transducer device provided herein;

fig. 12 (a) to (c) are schematic structural views of various embodiments of the earphone provided in the present application in a wearing state;

FIG. 13 is a schematic cross-sectional view of an embodiment of a headset provided herein;

FIG. 14 is a schematic cross-sectional view of an embodiment of a headset provided herein;

FIG. 15 is a schematic cross-sectional view of an embodiment of a headset provided herein;

fig. 16 is a schematic cross-sectional structure of an embodiment of the earphone provided in the present application.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustration of the present application, but do not limit the scope of the present application. Likewise, the following embodiments are only some, but not all, of the embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present application.

Reference in the present application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 and 2, the transducer assembly 10 may include a first magnetic conductor 11, a coil 12, and a magnet assembly 13, wherein an orthographic projection of the coil 12 on a reference plane (e.g., RP in fig. 2) perpendicular to a first reference direction (e.g., RD1 in fig. 1) surrounds a periphery of an orthographic projection of at least the first magnetic conductor 11 on the reference plane, and an orthographic projection of the magnet assembly 13 on the reference plane surrounds a periphery of an orthographic projection of the coil 12 on the reference plane. In other words, the first magnetizer 11 may be provided in a columnar structure, and the coil 12 and the magnet assembly 13 may be provided in a ring-like structure, respectively, as viewed in the aforementioned first reference direction; and in a second reference direction perpendicular to the aforementioned first reference direction (e.g. as shown by RD2 in fig. 1), the coil 12 is located in the magnetic gap between the first magnetizer 11 and the magnet assembly 13. Wherein the first magnetizer 11 may be configured as a cylinder, and the coil 12 and the magnet assembly 13 may be respectively configured as a circular ring. At this time, the first reference direction may be an axial direction of the cylinder, and the second reference direction may be a radial direction of the cylinder.

Further, the magnet assembly 13 may be used to form a magnetic field, and the first magnetizer 11 and other structural components with magnetic conductivity (for example, the third magnetizer 151 and the fourth magnetizer 152 mentioned later) may be used to adjust the distribution of the magnetic field formed by the magnet assembly 13 in the three-dimensional space, that is, the magnet assembly 13, the first magnetizer 11 and other structural components with magnetic conductivity together form a magnetic circuit system of the transducer 10; the coil 12 may be used to generate another (varying) magnetic field after the input of the excitation signal. Based on this, at least one of the first magnetizer 11 and the magnet assembly 13 may be connected with the coil 12, and a magnetic field generated after the coil 12 inputs the excitation signal interacts with a magnetic field formed by the magnet assembly 13, so that the first magnetizer 11 and the magnet assembly 13 perform a relative motion, thereby enabling the transduction apparatus 10 to convert the excitation signal into mechanical vibration. Wherein one of the first magnetizer 11 and the magnet assembly 13 may be connected with other structural members (e.g., a cartridge case 23 or a vibration panel 25 mentioned later) as an output end of the transduction apparatus 10 to output mechanical vibrations generated by the transduction apparatus 10. In this way, compared with the prior art that the coil 12 extends into the magnetic gap of the magnetic circuit system formed by the magnet and the magnetic conductive cover to cause the corresponding magnetic gap to be larger, the connection between the coil 12 and at least one of the first magnetic conductive body 11 and the magnet assembly 13 in the present application is beneficial to reducing the magnetic gap between the first magnetic conductive body 11 and the magnet assembly 13, so that the sensitivity of the transducer 10 is higher.

It should be noted that: all directional indicators (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components under a particular gesture (as shown in fig. 1 and 2), and if the particular gesture changes, the directional indicator changes accordingly. Based on this, it is mentioned hereinafter that the first reference and the second reference correspond to RD1 shown in fig. 1 and RD2 shown in fig. 1, respectively, unless otherwise specifically stated.

In some embodiments, one of the first magnetic conductor 11 and the magnet assembly 13 may be rigidly connected to the coil 12, and the other of the first magnetic conductor 11 and the magnet assembly 13 may be spaced apart from the coil 12 in the second reference direction. Wherein, in a specific connection mode, the rigid connection may refer to: the coil 12 is wound around the first magnetizer 11, and both may be further fixed by hard glue such as epoxy glue, structural glue; alternatively, the coil 12 is fixed to the inner side of the magnet assembly 13 facing the first magnetizer 11 by hard glue such as epoxy glue, structural glue. Further, after the coil 12 inputs the excitation signal, the aforementioned rigid connection may refer to: in a frequency range such as 20Hz to 2kHz, preferably in a target frequency range such as 20Hz to 20kHz, one of the first magnetic conductor 11 and the magnet assembly 13 rigidly connected to the coil 12 remains with the coil 12 with negligible relative movement therebetween. Wherein, the retention follower described herein may be defined as: and measuring frequency response curves of two structural member vibrations, wherein the abscissa and the ordinate of the frequency response curves are frequency (Hz) and amplitude (dB) respectively, the difference of the maximum amplitudes of the two structural member vibrations is less than or equal to 3dB, and the difference of the phases of the two structural member vibrations is less than or equal to 90 degrees.

As an example, in connection with fig. 1, the coil 12 may be wound around the first magnetic conductor 11, and both may be further fixed by hard glue such as epoxy glue, structural glue, i.e. the coil 12 is rigidly connected to the first magnetic conductor 11; the coil 12 and the magnet assembly 13 may be spaced apart in the second reference direction. At this time, the first magnetizer 11 may serve as an output end of the transduction device 10. In this way, the first magnetizer 11 will vibrate together with the coil 12, which results in an increase of the total mass of the output end of the transducer 10, and although the resonance peak of the output end of the transducer 10 can be shifted to a certain extent towards the frequency range with lower frequency, the sensitivity of the transducer 10 will be affected to a certain extent. In addition, since the coil 12 vibrates together with the first magnetizer 11, the displacement amount of the coil 12 is large, and the risk of tearing the outgoing line of the coil 12 is increased to some extent. Wherein the outgoing line of the coil 12 may refer to: the portion of the wire in the coil 12 that extends outside the transducer assembly 10 and is used to receive the excitation signal.

As an example, in connection with fig. 3, the coil 12 may be fixed to the inner side of the magnet assembly 13 facing the first magnetizer 11 by means of hard glue, such as epoxy glue, structural glue, i.e. the coil 12 is rigidly connected to the magnet assembly 13; the coil 12 and the first magnetizer 11 may be disposed at intervals in the second reference direction. At this time, the first magnetizer 11 may serve as an output end of the transduction device 10. In this way, the first magnetizer 11 does not need to vibrate together with the coil 12, so that the total mass of the output end of the transduction device 10 is reduced to a certain extent, and the sensitivity of the transduction device 10 is improved. In addition, since the coil 12 does not vibrate together with the first magnetizer 11, the displacement amount of the coil 12 is reduced to a certain extent, which is beneficial to reducing the risk of tearing the outgoing line of the coil 12, thereby improving the reliability of the coil 12.

It should be noted that: when one of the first magnetic conductor 11 and the magnet assembly 13 is rigidly connected with the coil 12, the other of the first magnetic conductor 11 and the magnet assembly 13 may serve as an output of the transduction device 10. In this way, under equivalent conditions, it is advantageous to reduce the overall mass of the output of the transducer 10, thereby increasing the sensitivity of the transducer 10. Further, when one of the first magnetizer 11 and the magnet assembly 13 is used as the output end of the transducer 10, the coil 12 is rigidly connected to the other of the first magnetizer 11 and the magnet assembly 13, compared with the rigid connection of the coil 12 to the output end of the transducer 10, the displacement of the coil 12 can be reduced to a certain extent, which is beneficial to reducing the risk of tearing the outlet end of the coil 12, thereby improving the reliability of the coil 12. In addition, when one of the first magnetizer 11 and the magnet assembly 13 is rigidly connected with the coil 12, one of the first magnetizer 11 and the magnet assembly 13 and the coil 12 can also serve as a short-circuit ring of the coil 12, which is beneficial to reducing the inductance of the coil 12.

Further, the magnet assembly 13 may include a first magnet 131 and a second magnet 132 stacked along the first reference direction, both of which may be used to provide a stable magnetic field for the magnet assembly 13. The magnetic field direction of the first magnet 131 is different from the magnetic field direction of the second magnet 132, so that the magnetic field formed by the magnet assembly 13 is concentrated toward the half thickness of the magnet assembly 13 in the first reference direction, thereby improving the utilization rate of the magnetic field formed by the magnet assembly 13. Further, the coil 12 may overlap with the boundary between the first magnet 131 and the second magnet 132 when orthographic projected onto the inner circumferential surface of the magnet assembly 13 along the second reference direction, so that the induction lines of the magnetic field formed by the magnet assembly 13 pass through the coil 12 more, thereby improving the utilization rate of the magnetic field formed by the magnet assembly 13. As an example, the magnetic field direction of the first magnet 131 and the magnetic field direction of the second magnet 132 are opposite to each other and are both parallel to the first reference direction. The thickness of the first magnet 131 in the first reference direction and the thickness of the second magnet 132 in the first reference direction may be equal in size, for example, they are mirror-image arranged about a symmetry plane perpendicular to the first reference direction. At this time, the half height of the coil 12 in the first reference direction may be flush with the interface between the first magnet 131 and the second magnet 132.

Further, the magnet assembly 13 may include a second magnetizer 133, and the second magnetizer 133 may be at least partially located inside the first and second magnets 131, 132 toward the first magnetizer 11. The second magnetizer 133 may be used to adjust the magnetic induction lines of the magnetic fields provided by the first and second magnets 131 and 132 so that the magnetic induction lines are along the second reference direction as much as possible. For example: the aforementioned magnetic induction lines originate from the magnet assembly 13 or return to the magnet assembly 13 perpendicularly to the inner annular face of the second magnetic conductor 133 towards the first magnetic conductor 11. At this time, the coil 12 may be fixed to the inside of the second magnetizer 133 toward the first magnetizer 11. In this manner, the aforementioned magnetically induced coils are allowed to pass through the coils 12 in a radial direction of the coils 12, such that the transducer 10 generates sufficiently strong mechanical vibrations.

As an example, the second magnetizer 133 may include a cylindrical portion 1331 and an annular portion 1332 connected to an outer circumferential surface of the cylindrical portion 1331, and a thickness of the cylindrical portion 1331 in the first reference direction may be greater than a thickness of the annular portion 1332 in the first reference direction. The annular portion 1332 may be interposed between the first magnet 131 and the second magnet 132. At this time, the coil 12 may be fixed to the inner side of the cylindrical portion 1331 toward the first magnetizer 11. Further, the height of the coil 12 in the first reference direction may be less than or equal to the thickness of the cylindrical portion 1331 in the first reference direction, and the thickness of the cylindrical portion 1331 in the first reference direction may be less than or equal to the sum of the thicknesses of the first magnet 131, the second magnet 132, and the annular portion 1332 in the first reference direction. This is so that the magnet assembly 13 provides a magnetic field of sufficient field strength to the coil 12.

Further, the second magnetizer 133 may include a first limiting portion 1333 and a second limiting portion 1334 connected with the cylindrical portion 1331, where the first limiting portion 1333 and the second limiting portion 1334 are located on two sides of the coil 12 in the first reference direction, so as to limit the coil 12 in the first reference direction, thereby preventing the coil 12 and the second magnetizer 133 from moving relatively, and further keeping the magnet assembly 13 and the coil 12 follow. At least one of the first and second stopper portions 1333 and 1334 may be a structural member independent of the cylindrical portion 1331, so as to facilitate mounting of the coil 12. For example: the coil 12 is fixed on the inner side of the cylindrical portion 1331 facing the first magnetizer 11 by hard glue such as epoxy glue or structural glue, and then one of the first limiting portion 1333 and the second limiting portion 1334, which is independent of the cylindrical portion 1331, is fixed on the cylindrical portion 1331 by one of or a combination of assembly modes such as gluing, clamping, screwing and the like.

Further, the transducer 10 may include a first vibration transmitting piece 141 and a second vibration transmitting piece 142, the first vibration transmitting piece 141 and the second vibration transmitting piece 142 being located at both sides of the coil 12 in the first reference direction, respectively, the first vibration transmitting piece 141 connecting one end of the first magnetizer 11 and one end of the magnet assembly 13, and the second vibration transmitting piece 142 connecting the other end of the first magnetizer 11 and the other end of the magnet assembly 13. For example: the first vibration-transmitting piece 141 connects one end of the first magnetizer 11 and the outside of the first magnet 131 facing away from the second magnet 132, and the second vibration-transmitting piece 142 connects the other end of the first magnetizer 11 and the outside of the second magnet 132 facing away from the first magnet 131. In this way, compared with the first magnetizer 11 being connected with the magnet assembly 13 only through one vibration transmission piece, the first magnetizer 11 is connected with the magnet assembly 13 through two vibration transmission pieces which are spaced from each other, so that the first magnetizer 11 and the magnet assembly 13 are prevented from attracting each other due to the action of magnetic force, and the magnetic gap between the first magnetizer 11 and the magnet assembly 13 is effectively maintained.

In some embodiments, referring to fig. 4 and 5, the first vibration-transmitting sheet 141 may include a first spoke 1411, and a first inner fixing portion 1412 and a first outer fixing portion 1413 connected with the first spoke 1411 to allow the first vibration-transmitting sheet 141 to be connected with the first magnetizer 11 and the magnet assembly 13 through the first inner fixing portion 1412 and the first outer fixing portion 1413, respectively; the second vibration transmitting sheet 142 may include a second web portion 1421, and second inner and outer fixing portions 1422 and 1423 connected to the second web portion 1421 to allow the second vibration transmitting sheet 142 to be connected to the first magnetizer 11 and the magnet assembly 13 through the second inner and outer fixing portions 1422 and 1423, respectively. The first spoke portion 1411 may include a plurality of first spokes, such as three first spokes shown in fig. 4, that are spirally unfolded from the center of the first vibration-transmitting sheet 141, so that a region between the first inner fixing portion 1412 and the first outer fixing portion 1413 is in a hollowed-out structure, so that the first vibration-transmitting sheet 141 has a stiffness (i.e. an elastic coefficient) with a preset size; the second spoke portion 1421 may include a plurality of second spokes, for example, three second spokes shown in fig. 5, that are spirally extended outwards from the center of the second vibration transmitting sheet 142, so that a region between the second inner fixing portion 1422 and the second outer fixing portion 1423 is in a hollowed-out structure, so that the second vibration transmitting sheet 142 has a stiffness (i.e. an elastic coefficient) with a preset size. Further, the spiral direction of the first spoke and the spiral direction of the second spoke at the same position of the first vibration transmitting plate 141 and the second vibration transmitting plate 142 are opposite to each other, as viewed along the first reference direction, for example, the spiral direction of the first spoke is clockwise in fig. 4 and the spiral direction of the second spoke is counterclockwise in fig. 5. As such, when the first magnetic conductor 11 and the magnet assembly 13 have a tendency to twist about the first reference direction during vibration of the transduction apparatus 10, one of the first vibration transmitting piece 141 and the second vibration transmitting piece 142 may hinder such a tendency to twist, thereby avoiding unnecessary collision, which is advantageous in further reducing the magnetic gap between the first magnetic conductor 11 and the magnet assembly 13.

In some embodiments, referring to fig. 6, the first vibration-transmitting sheet 141 may include a first spoke 1411, and a first inner fixing portion 1412 and a first outer fixing portion 1413 connected with the first spoke 1411 to allow the first vibration-transmitting sheet 141 to be connected with the first magnetizer 11 and the magnet assembly 13 through the first inner fixing portion 1412 and the first outer fixing portion 1413, respectively. Wherein, the first radial portion 1411 may be further divided into a first sub-region 141A and a second sub-region 141B nested with each other along a radial direction (i.e., a second reference direction) of the first vibration-transmitting sheet 141, the spiral directions of the first spokes in the first sub-region 141A and the second sub-region 141B are opposite to each other, for example, the spiral direction of the first spoke in the first sub-region 141A located at the inner side is clockwise and the spiral direction of the first spoke in the second sub-region 141B located at the outer side is counterclockwise in fig. 6. In this way, when the first magnetizer 11 and the magnet assembly 13 have a torsion tendency around the first reference direction during the vibration process of the transducer 10, the first vibration transmitting piece 141 has the first spokes with the inner and outer spiral directions opposite to each other, so that the torsion tendency can be blocked, thereby avoiding unnecessary collision, and being also beneficial to further reducing the magnetic gap between the first magnetizer 11 and the magnet assembly 13. The first vibration-transmitting sheet 141 may further include a first transition 1414, and the first spoke in the first sub-region 141A and the first spoke in the second sub-region 141B are connected by the first transition 1414. Further, in the circumferential direction of the first vibration transmitting sheet 141, a connection point between any one of the first spokes in the first sub-region 141A and the first transition portion 1414 may be located between connection points between two adjacent first spokes in the second sub-region 141B and the first transition portion 1414, so that all connection points are spaced apart from each other in the circumferential direction of the first vibration transmitting sheet 141, which is favorable for the deformation of the first vibration transmitting sheet 141 to occur more uniformly and stably.

Similarly, in connection with fig. 7, the second vibration transmitting sheet 142 may include a second web portion 1421, and second inner and outer fixing portions 1422 and 1423 connected to the second web portion 1421 to allow the second vibration transmitting sheet 142 to be connected to the first magnetizer 11 and the magnet assembly 13 through the second inner and outer fixing portions 1422 and 1423, respectively. Wherein, the second spoke portion 1421 may be further divided into a third sub-region 142C and a fourth sub-region 142D nested with each other along the radial direction (i.e., the second reference direction) of the second vibration-transmitting sheet 142, the spiral directions of the second spokes in the third sub-region 142C and the fourth sub-region 142D are opposite to each other, for example, the spiral direction of the second spoke in the third sub-region 142C located on the inner side is counterclockwise and the spiral direction of the second spoke in the fourth sub-region 142D located on the outer side is clockwise in fig. 7. In this way, when the first magnetizer 11 and the magnet assembly 13 have a torsion tendency around the first reference direction during the vibration of the transducer 10, the second vibration-transmitting piece 142 can prevent the torsion tendency by having the first spokes with the inner and outer spiral directions opposite to each other, so as to avoid unnecessary collision, and also facilitate further reducing the magnetic gap between the first magnetizer 11 and the magnet assembly 13. The second vibration transmitting sheet 142 may further include a second transition portion 1424, and the second spoke in the third sub-region 142C and the second spoke in the fourth sub-region 142D are connected by the second transition portion 1424. Further, in the circumferential direction of the second vibration transmitting sheet 142, a connection point between any one of the second spokes in the third sub-region 142C and the second transition portion 1424 may be located between connection points between two adjacent second spokes in the fourth sub-region 142D and the second transition portion 1424, so that all connection points are spaced apart from each other in the circumferential direction of the second vibration transmitting sheet 142, which is advantageous for the second vibration transmitting sheet 142 to deform more uniformly and stably.

It should be noted that: for the first vibration-transmitting sheet 141, the areas where the first inner fixing portion 1412 and the first outer fixing portion 1413 of the first vibration-transmitting sheet 141 are located may be simply regarded as the center area and the edge area of the first vibration-transmitting sheet 141, respectively; for the second vibration transmitting sheet 142, the areas where the second inner fixing portion 1422 and the second outer fixing portion 1423 of the second vibration transmitting sheet 142 are located can be simply regarded as the center area and the edge area of the second vibration transmitting sheet 142, respectively. Further, the outer contours of the first vibration transmitting sheet 141 and the second vibration transmitting sheet 142 may be one of rounded rectangle, circle, etc. respectively, as viewed along the first reference direction.

Further, referring to fig. 8 and 9, in the non-operating state where the coil 12 does not input the excitation signal, the edge region of the first vibration transmitting sheet 141 and the central region of the first vibration transmitting sheet 141 may not be coplanar, that is, the first outer fixing portion 1413 and the first inner fixing portion 1412 may not be coplanar; the edge region of the second vibration transmitting sheet 142 and the central region of the second vibration transmitting sheet 142 may not be coplanar, that is, the second outer fixing portion 1423 and the second inner fixing portion 1422 may not be coplanar. In this way, after the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 are connected to the first magnetizer 11 and the magnet assembly 13, they have a certain pretightening force. At this time, due to the existence of the pre-tightening force, the first vibration transmitting piece 141 and the second vibration transmitting piece 142 do not have the situation that the elastic force is zero at the same time in the process of vibrating the transducer 10, which is beneficial to improving the stability and linearity of the vibration of the transducer 10. In addition, the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 may be planar before being assembled to the transducer device 10, compared to after being assembled, for ease of processing.

As an example, in the above-described non-operating state, the first distance between the edge region of the first vibration-transmitting sheet 141 and the central region of the first vibration-transmitting sheet 141 in the first reference direction may be greater than or equal to 0.4mm, and the second distance between the edge region of the second vibration-transmitting sheet 142 and the central region of the second vibration-transmitting sheet 142 in the first reference direction may be greater than or equal to 0.4mm. If the first and second pitches are too small, the pretightening force provided by the first and second vibration-transmitting sheets 141 and 142 is too small to satisfy the practical use requirement. Further, the first pitch and the second pitch may be equal in size.

In some embodiments, referring to fig. 8, in the first reference direction, a central region of the first vibration transmitting plate 141 may be closer to the magnet assembly 13 than an edge region of the first vibration transmitting plate 141, and a central region of the second vibration transmitting plate 142 may be closer to the magnet assembly 13 than an edge region of the second vibration transmitting plate 142. For example: the length of the first magnetizer 11 in the first reference direction may be less than or equal to the thickness of the magnet assembly 13 in the first reference direction; the edge regions of the first and second vibration-transmitting sheets 141 and 142 are respectively connected to both ends of the magnet assembly 13, and the center regions of the first and second vibration-transmitting sheets 141 and 142 are respectively pressed against both ends of the first magnetizer 11 by fasteners such as nuts, snap rings.

In some embodiments, referring to fig. 9, in the first reference direction, a central region of the first vibration transmitting plate 141 may be farther from the magnet assembly 13 than an edge region of the first vibration transmitting plate 141, and a central region of the second vibration transmitting plate 142 may be farther from the magnet assembly 13 than an edge region of the second vibration transmitting plate 142. For example: the length of the first magnetizer 11 in the first reference direction may be greater than the thickness of the magnet assembly 13 in the first reference direction; the edge regions of the first and second vibration-transmitting sheets 141 and 142 are connected to both ends of the magnet assembly 13, respectively, and the center regions of the first and second vibration-transmitting sheets 141 and 142 are connected to both ends of the first magnetizer 11, respectively. In this way, the first magnetic conductor 11 can expand the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 along the first reference direction. Notably, are: the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 are assembled in a simpler manner than in the embodiment shown in fig. 8 and 9.

Further, the transduction apparatus 10 may include a third magnetizer 151 and a fourth magnetizer 152 connected to two ends of the first magnetizer 11, respectively, where the third magnetizer 151 and the fourth magnetizer 152 are located at two sides of the coil 12 in the first reference direction, and cover the magnetic gap between the first magnetizer 11 and the magnet assembly 13 in the first reference direction, respectively, so that the magnetic field formed by the magnet assembly 13 is concentrated in the magnetic gap between the first magnetizer 11 and the magnet assembly 13, and the magnetic induction line of the magnetic field formed by the magnet assembly 13 passes through the coil 12 more, thereby improving the utilization rate of the magnetic field formed by the magnet assembly 13. Wherein the third and fourth magnetic conductors 151 and 152 may be respectively provided in a plate shape. Further, the third magnetic conductor 151 and the fourth magnetic conductor 152 are respectively overlapped with the second magnetic conductor 133 (for example, the cylindrical portion 1331) in projection in the first reference direction.

In some embodiments, referring to fig. 8, the third magnetic conductor 151 may be located at an outer side of the first vibration transmitting sheet 141 facing away from the second vibration transmitting sheet 142, and the fourth magnetic conductor 152 may be located at an outer side of the second vibration transmitting sheet 142 facing away from the first vibration transmitting sheet 141. For example: the first magnetizer 11 is configured to have a five-segment structure with different radial dimensions, the coil 12 surrounds a first segment with the largest radial dimension in the first magnetizer 11, the first vibration transmitting piece 141 and the second vibration transmitting piece 142 are respectively fixed on a second segment and a third segment with the second radial dimension in the first magnetizer 11, and the third magnetizer 151 and the fourth magnetizer 152 are respectively fixed on a fourth segment and a fifth segment with the smallest radial dimension in the first magnetizer 11. In this way, the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 are not only prevented from colliding with the corresponding third magnetic conductor 151 and fourth magnetic conductor 152, respectively, but also prevented from colliding with the third magnetic conductor 151 and fourth magnetic conductor 152 in the first magnetic conductor 11.

In some embodiments, referring to fig. 9, the third and fourth magnetic conductors 151 and 152 may be connected to both ends of the first magnetic conductor 11, respectively. At this time, the third magnetic conductor 151 may be located at the inner side of the first vibration-transmitting sheet 141 toward the second vibration-transmitting sheet 142, and the fourth magnetic conductor 152 may be located at the inner side of the second vibration-transmitting sheet 142 toward the first vibration-transmitting sheet 141. For example: the first magnetizer 11 is configured to have a five-segment structure with different radial dimensions, the coil 12 surrounds a first segment with the largest radial dimension in the first magnetizer 11, the third magnetizer 151 and the fourth magnetizer 152 are respectively fixed on a second segment and a third segment with the second radial dimension in the first magnetizer 11, and the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 are respectively fixed on a fourth segment and a fifth segment with the smallest radial dimension in the first magnetizer 11. In this way, it is also advantageous to avoid the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 from colliding with the corresponding third magnetic conductor 151 and fourth magnetic conductor 152, respectively. Notably, are: compared to fig. 8, the embodiment shown in fig. 9 is also advantageous in reducing the gap between the third magnetic conductor 151 and the second magnetic conductor 133 in the first direction and the gap between the fourth magnetic conductor 152 and the second magnetic conductor 133 in the first direction, thereby improving the sensitivity of the transducer device 10.

In some embodiments, the coil 12 may be elastically connected to at least one of the first magnetizer 11 and the magnet assembly 13 by an elastic member 16, and the coil 12 and the at least one of the first magnetizer 11 and the magnet assembly 13 are disposed at a spacing in the second reference direction. Wherein the elastic member 16 may be a glue such as a silicone gel or a hot melt glue after curing. In addition, the elastic member 16 may also be used as at least one of the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 mentioned above. For example: the coil 12 is fixed on the first transition portion 1414 of the first vibration transmitting plate 141 or the second transition portion 1424 of the second vibration transmitting plate 142, which corresponds to the coil 12 being elastically connected to at least one of the first magnetizer 11 and the magnet assembly 13 by the elastic member 16, and the coil 12 being disposed at intervals from at least one of the first magnetizer 11 and the magnet assembly 13 in the second reference direction. Further, after the coil 12 inputs the excitation signal, the aforementioned elastic connection may refer to: the coil 12 follows one of the first magnetizer 11 and the magnet assembly 13 through the elastic member 16 in a first target frequency range of 20Hz to 200Hz, preferably in a first target frequency range such as 20Hz to 2 kHz; in a second target frequency range of 2kHz to 20kHz, the first magnetizer 11 and one of the magnet assemblies 13, which is elastically connected to the coil 12 through the elastic member 16, generate a relative motion with the coil 12. In this way, compared to the case where one of the first magnetizer 11 and the magnet assembly 13 is rigidly connected to the coil 12, the coil 12 is elastically connected to at least one of the first magnetizer 11 and the magnet assembly 13 by the elastic member 16, so that one of the first magnetizer 11 and the magnet assembly 13, which is elastically connected to the coil 12 by the elastic member 16, keeps following the coil 12 in a frequency range with a lower frequency, which is equivalent to increasing the total mass, and the corresponding resonance peak is also shifted toward the frequency range with a lower frequency, which is beneficial to improving the low-frequency expressive force of the transducer 10 and generating relative motion in the frequency range with a higher frequency, which is equivalent to reducing the total mass, which is beneficial to improving the sensitivity of the transducer 10.

As an example, in connection with fig. 10, the coil 12 may be elastically connected to one of the first magnetizer 11 and the magnet assembly 13 by an elastic member 16, and the coil 12 is disposed at a distance from the other of the first magnetizer 11 and the magnet assembly 13 in the second reference direction. For convenience of description, the coil 12 is elastically connected to the first magnetizer 11 through the elastic member 16, and the coil 12 and the magnet assembly 13 are disposed at a distance in the second reference direction, for example, as an example. At this time, the first magnetizer 11 may serve as an output end of the transduction device 10. Thus, in the first target frequency range of 50Hz to 200Hz, since the coil 12 can move along with the first magnetizer 11 through the elastic member 16, which is equivalent to increasing the total mass of the output end of the transducer 10, so that the resonance peak of the output end of the transducer 10 shifts toward the frequency range with lower frequency, which is beneficial to improving the low-frequency expressive force of the transducer 10, and in the second target frequency range of 2kHz to 20kHz, since the first magnetizer 11 and the coil 12 generate relative movement, the coil 12 is allowed not to move along with the first magnetizer 11, which is equivalent to reducing the total mass of the output end of the transducer 10, which is beneficial to improving the sensitivity of the transducer 10. In addition, since the coil 12 may not move along with the first magnetizer 11 in a frequency range with a higher frequency (for example, the second target frequency range), the displacement of the coil 12 is reduced to a certain extent, which is beneficial to reducing the risk of tearing the outgoing line of the coil 12, thereby improving the reliability of the coil 12.

It should be noted that: unlike fig. 10, the coil 12 can also be connected elastically to the magnet assembly 13 by means of an elastic element 16, the coil 12 being arranged at a distance from the first magnetic conductor 11 in the second reference direction. At this time, the first magnetizer 11 may be used as an output end of the transducer 10, and the same or similar technical effects may be achieved, which will not be described herein. Further, the specific structure and the connection relationship of the structural members such as the magnet assembly 13, the first vibration-transmitting sheet 141, the second vibration-transmitting sheet 142, the third magnetic conductor 151, and the fourth magnetic conductor 152, and the corresponding technical effects are described in detail above, and are not described herein. When the coil 12 is elastically connected to the magnet assembly 13 by the elastic member 16, the coil 12 may be fixed to the second magnetizer 133 (specifically, the cylindrical portion 1331) toward the inner side of the first magnetizer 11. At this time, the second magnetizer 133 may not include the first and second stopper portions 1333 and 1334 connected to the cylindrical portion 1331 in consideration of the space requirement for the relative movement of the coil 12 and the magnet assembly 13.

Based on the above-mentioned related description, the first magnet 131 and the second magnet 132 in the magnet assembly 13 may be used to provide a stable magnetic field for the magnet assembly 13, i.e. the magnet assembly 13 is provided in a double magnet structure. Thus, the magnet assembly 13 may also be provided in a single magnet configuration, i.e. only one of the first and second magnets 131, 132 may be provided, as well as providing a stable magnetic field for the magnet assembly 13. Notably, are: the first magnet 131 and the second magnet 132 can generate larger repulsive force in the assembling process, so that the assembling difficulty of the double-magnet structure is higher; the single magnet structure has no repulsive force in the assembling process, so that the assembling difficulty is lower and the assembling is more convenient.

As an example, in connection with fig. 11, the magnet assembly 13 may include a third magnet 134 and an adapter 135 stacked in the first reference direction, the third magnet 134 being made of a hard magnetic material, and the adapter 135 not being made of a hard magnetic material to form a single magnet structure. At this time, the first vibration transmitting piece 141 and the second vibration transmitting piece 142 are respectively located at both sides of the coil 12 in the first reference direction, the first vibration transmitting piece 141 may connect one end of the first magnetizer 11 and the third magnet 134, and the second vibration transmitting piece 142 connects the other end of the first magnetizer 11 and the adapter 135.

It should be noted that: in this application, the first, second and third magnets 131, 132 and 134 may be made of hard magnetic materials such as high carbon steel, alnico and tico, and the first, second, third and fourth magnetic conductors 11, 133, 151 and 152 may be made of soft magnetic materials such as silicon steel and alnico, respectively. Further, the adaptor 135 is not made of a hard magnetic material means that: the adapter 135 is made of a material other than a hard magnetic material, for example, the adapter 135 is made of a soft magnetic material, and for example, the adapter 135 is made of a non-magnetic material such as plastic and ceramic. Wherein, when the adaptor 135 is made of soft magnetic material, referring to fig. 11, the adaptor 135 may be integrally formed with the second magnetizer 133; alternatively, in connection with fig. 8, one of the third and fourth magnetic conductors 151 and 152 connected to the adapter 135 may be an integrally formed structure with the adapter 135 and the second magnetic conductor 133.

Further, when the coil 12 is orthographically projected to the inner circumferential surface of the magnet assembly 13 along the second reference direction, the interface between the third magnet 134 and the adapter 135 is overlapped, so that the magnetic induction line of the magnetic field formed by the magnet assembly 13 passes through the coil 12 more, thereby improving the utilization rate of the magnetic field formed by the magnet assembly 13. The half height of the coil 12 in the first reference direction may be flush with the interface between the third magnet 134 and the adapter 135.

Further, the second magnetic conductor 133 may be located at least partially inside the third magnetic conductor 134 and the adapter 135 toward the first magnetic conductor 11. The second magnetizer 133 may be used to adjust the magnetic induction line of the magnetic field provided by the third magnetizer 134, so that the magnetic induction line is along the second reference direction as much as possible. For example: the aforementioned magnetic induction lines originate from the magnet assembly 13 or return to the magnet assembly 13 perpendicularly to the inner annular face of the second magnetic conductor 133 towards the first magnetic conductor 11. In this manner, the aforementioned magnetically induced coils are allowed to pass through the coils 12 in a radial direction of the coils 12, such that the transducer 10 generates sufficiently strong mechanical vibrations. Further, the coil 12 and the third magnet 134 are orthographically projected along the second reference direction to form a first overlap region, and the coil 12 and the second magnetizer 133 are orthographically projected along the second reference direction to form a second overlap region. Wherein the height of the aforementioned second overlapping region in the first reference direction is greater than the height of the aforementioned first overlapping region in the first reference direction, so that the aforementioned magnetic induction line passes through the coil 12 more in the radial direction of the coil 12.

As an example, the second magnetizer 133 may include a cylindrical portion 1331 and an annular portion 1332 connected to an outer circumferential surface of the cylindrical portion 1331, and a thickness of the cylindrical portion 1331 in the first reference direction may be greater than a thickness of the annular portion 1332 in the first reference direction. Wherein, the annular portion 1332 may be interposed between the third magnet 134 and the adapter 135. At this time, the coil 12 and the cylindrical portion 1331 are orthographically projected in the second reference direction to form the above-described second overlapping region. Further, the height of the coil 12 in the first reference direction may be less than or equal to the thickness of the cylindrical portion 1331 in the first reference direction, and the thickness of the cylindrical portion 1331 in the first reference direction may be less than or equal to the sum of the thicknesses of the third magnet 134, the adapter 135, and the annular portion 1332 in the first reference direction. Based on this, the coil 12 is fixed to the inner side of the cylindrical portion 1331 facing the first magnetic conductor 11 in a rigid connection or elastic connection manner, or the coil 12 is fixed to the first magnetic conductor 11 in a rigid connection or elastic connection manner. The manner of rigid connection or elastic connection, and the corresponding technical effects, are described in detail above, and are not repeated here.

From the above detailed description, it is apparent that: for the magnet assembly 13, the first magnet 131 and the second magnet 132 in the double-magnet structure are replaced by the third magnet 134 and the adapter 135 respectively, so that a single-magnet structure can be obtained, while the specific structures of other structural members, such as the first magnetizer 11, the coil 12, the first vibration-transmitting piece 141, the second vibration-transmitting piece 142, the third magnetizer 151, the fourth magnetizer 152, and the like, and the connection relation thereof can be kept unchanged. Therefore, the transducer device 10 with the single magnet structure can achieve the same or similar technical effects as the transducer device 10 with the single magnet structure, and will not be described herein.

Referring to fig. 12, the earphone 20 may include a support assembly 21 and a deck module 22 connected to the support assembly 21, the support assembly 21 may be used to support the deck module 22 to be worn in a wearing position, and the deck module 22 may be used to convert an excitation signal into mechanical vibration so that a user can hear sounds through the earphone 20. Wherein, the support component 21 can be annularly arranged and wound on the ear of the user, for example, as shown in (a) of fig. 12; the ear hook may also be configured to engage the rear hook to hang over the user's ear and around the rear side of the head, as shown, for example, in fig. 12 (b); it may also be provided in a head rest configuration and wrapped around the top of the user's head, as shown for example in fig. 12 (c). Correspondingly, the wearing position can be the front side of the ear of the user, which is away from the head, and the wearing position can also be the position of the cheek of the user, which is close to the ear. Further, the deck module 22 may include a deck housing 23 connected with the support assembly 21 and the transducer device 10, and the transducer device 10 is disposed in the receiving cavity of the deck housing 23. The specific structure of the transducer 10 and the corresponding technical effects are described in detail above, and are not repeated here. For convenience of description, the following will exemplify the transducer device 10 shown in fig. 9.

It should be noted that: the application core module 22 can set up two, and two core modules 22 all can be with excitation signal conversion machine core vibration, mainly be in order to be convenient for earphone 20 realize stereophonic effect. Therefore, in other application scenarios where the stereo requirements are not particularly high, such as hearing assistance for a hearing patient, live-broadcast word-making for a host, the headset 20 may be provided with only one movement module 22.

In some embodiments, the cartridge housing 23 may include an inner cylinder wall 231, and a first end wall 232 and a second end wall 233 respectively connected to two ends of the inner cylinder wall 231, where the first end wall 232 and the second end wall 233 may be respectively located at opposite sides of the transducer 10 in the first reference direction, and define a receiving cavity of the cartridge housing 23 with the inner cylinder wall 231. Wherein the inner cylinder wall 231, the first end wall 232 and the second end wall 233 may be independent structural members, and one of the first end wall 232 and the second end wall 233 may be an integral structural member with the inner cylinder wall 231. In this way, it is easy to fit the transduction device 10 or other structural members within the receiving cavity of the movement casing 23. Further, one of the first end wall 232 and the second end wall 233 may be configured to contact or abut the skin of a user to transfer mechanical vibrations generated by the transducer device 10 to the user. Wherein, the abutting means: is not in direct contact with the skin of the user.

As an example, in connection with fig. 13, the magnet assembly 13 may be coupled to the inner cylinder wall 231 and the first magnetic conductor 11 may be spaced apart from the first end wall 232 and the second end wall 233, respectively. At this time, the magnet assembly 13 may serve as an output of the transducer device 10. As such, mechanical vibrations generated by the transducer device 10 may be further transmitted to the user through one of the first and second end walls 232, 233 for contact with or abutment against the user's skin to facilitate the user's hearing of sound through the headphones 20. Notably, are: since the structural members such as the battery and the circuit board in the earphone 20 are generally disposed relatively fixed to the deck housing 23, the coil 12 is not displaced too much relative to the structural members such as the battery and the circuit board when the magnet assembly 13 is fixed to the inner side of the first magnetizer 11, and the outgoing wire of the coil 12 (for example, for coupling with the battery and the circuit board to receive the excitation signal) is not easily torn.

As an example, in connection with fig. 14, the first magnetizer 11 may be connected with at least one of the first end wall 232 and the second end wall 233, and the magnet assembly 13 may be spaced apart from the inner cylinder wall 231 in the second reference direction. At this time, the first magnetizer 11 may serve as an output end of the transduction device 10. Wherein one of the first end wall 232 and the second end wall 233 for contacting or abutting the skin of the user may be connected to the first magnetizer 11, and the other of the first end wall 232 and the second end wall 233 not for contacting or abutting the skin of the user may be spaced apart from the first magnetizer 11. For example: the first end wall 232 is used for contacting or abutting against the skin of a user, one end of the first magnetizer 11 is connected with the first end wall 232, and the other end of the first magnetizer 11 is arranged at a distance from the second end wall 233. In this manner, mechanical vibrations generated by the transducer assembly 10 may be transmitted directly to the user through the first end wall 232, which may facilitate reducing losses in the transmission of the aforementioned mechanical vibrations, such that the user may better hear sound through the headphones 20, such as to increase the intensity of the sound heard by the user. In addition, since the magnet assembly 13 is not connected to the inner cylinder wall 231 and the first magnetizer 11 is not connected to the second end wall 233, mechanical vibration generated by the transducer 10 can be less transferred to the second end wall 233, which is beneficial to reducing leakage sound of the earphone 20. Further, the end of the first magnetizer 11, which is not connected to the first end wall 232 or the second end wall 233, may be connected to the cartridge housing 23 through the damping sheet 24, for example, the second end wall 233 presses the edge area of the damping sheet 24 against the inner cylinder wall 231, which is beneficial to avoiding the shaking and collision of the transducer 10 during the vibration process, so as to increase the reliability of the cartridge module 22. The specific structure of the vibration damping sheet 24 may be the same as or similar to that of the first vibration transmitting sheet 141 (or the second vibration transmitting sheet 142), and will not be described herein again; only because they are connected with different structural members respectively and the functions are not completely the same, certain difference exists in rigidity, and those skilled in the art can perform reasonable design according to actual requirements, and the description is omitted here.

In some embodiments, the deck module 22 may include a vibration damping sheet 24 and a vibration panel 25, and the transducer device 10 may be suspended within the receiving cavity of the deck housing 23 by the vibration damping sheet 24. Wherein the vibration panel 25 is connected to the first magnetizer 11 and is used for contacting or abutting against the skin of the user to transfer the mechanical vibration generated by the transduction device 10 to the user. At this time, the first magnetizer 11 may serve as an output end of the transduction device 10. Thus, compared with the related art in which the vibration panel 25 is connected to the coil 12 through a bracket (generally a plastic part), the bracket can have a complex higher-order mode in a frequency range with a higher frequency, resulting in poor high-frequency expressive force of the earphone 20; in the present embodiment, the vibration panel 25 is connected to the first magnetizer 11, and since the elastic modulus of the first magnetizer 11 can be much larger than that of the bracket, and the first magnetizer 11 can be configured to have a cylindrical structure, such as a cylinder, the first magnetizer 11 can hardly generate a complex higher-order mode in a frequency range with a higher frequency, which is beneficial to improving the high-frequency expressive power of the earphone 20. In addition, compared with the prior art in which the vibration panel 25 is connected to the bracket in a plugging manner, for example, the bracket is provided with a plug-in post for inserting the vibration panel 25, the plug-in post may be broken due to insufficient structural strength between the plug-in post and the bracket, resulting in failure of the connection relationship between the vibration panel 25 and the bracket; in this embodiment, the vibration panel 25 is connected with the first magnetizer 11, so-called brackets and connecting posts thereof are not present, and the structural strength of the first magnetizer 11 can be much greater than that of the brackets, so that the connection between the vibration panel 25 and the first magnetizer 11 is more reliable, which is beneficial to increasing the reliability of the movement module 22.

Further, the number of the damper blades 24 may be two, and the two damper blades 24 may be located on both sides of the coil 12 in the first reference direction, respectively. The central areas of the two damping plates 24 may be connected to both ends of the first magnetizer 11 in the first reference direction, and the edge areas of the two damping plates 24 may be connected to the deck housing 23. In this way, the transducer 10 is suspended in the accommodating cavity of the deck 23 by two vibration damping plates 24 spaced from each other, which is beneficial to avoiding the occurrence of shaking and collision of the transducer 10 during vibration.

Further, the deck module 22 may include a connector 26 connecting the vibration panel 25 and the first magnetizer 11. The connecting piece 26 and the vibration panel 25 may be an integrally formed structural member. At this time, the connector 26 may be nested on the first magnetizer 11. Of course, the first magnetic conductor 11 may also be partially inserted into the connecting piece 26.

As an example, in connection with fig. 15, an end of cartridge housing 23 adjacent to vibration panel 25 may be provided in an open configuration, e.g., cartridge housing 23 does not include first end wall 232, to facilitate assembly of transducer device 10 or other structural members within the receiving cavity of cartridge housing 23. After the assembly is finished, the open end of the core housing 23 may be covered with a facing cover, such as silica gel and gauze, so as to increase the waterproof and dustproof properties of the core module 22, prevent the transducer 10 from falling out of the core housing 23 in the case of falling, and increase the appearance expressive force of the core module 22, and prevent the user from seeing the internal structure of the core module 22. At this time, the vibration panel 25 is abutted against the skin of the user, and the aforementioned facing cover is brought into contact with the skin of the user.

As an example, referring to fig. 16, the cartridge case 23 may include an inner cylinder wall 231, and first and second end walls 232 and 233 respectively connected to both ends of the inner cylinder wall 231, and the first and second end walls 232 and 233 may be respectively located at opposite sides of the transduction device 10 in the first reference direction and define a receiving cavity of the cartridge case 23 with the inner cylinder wall 231. One end of the vibration panel 25, which is located on the outer connector 26 of the movement casing 23, is connected to the vibration panel 25, and the other end of the vibration panel extends into the movement casing 23 through the mounting hole on the first end wall 232 and is connected to the first magnetizer 11. In other words, compared to the deck case 23 shown in fig. 15 having an open structure, the deck case 23 shown in fig. 16 is not open structure, that is, the other portions except the mounting holes on the first end wall 232 may have a closed structure. In this way, even if the mechanical vibration generated by the transducer 10 is transferred to the deck housing 23 via the vibration damping sheet 24, the phases of the leakage sounds generated by the first end wall 232 and the second end wall 233 along with the vibration of the transducer 10 are opposite, and the two phases can be inverted and canceled in the far field, that is, the deck housing 23 itself can reduce the leakage sounds of the earphone 20 based on the principle of acoustic dipole. Therefore, the core casing 23 can be provided with fewer or even no sound leakage holes, which is beneficial to improving the waterproof and dustproof performance of the earphone 20.

Further, the area of the vibration panel 25 is larger than the area of the mounting hole, which is larger than the area of the connector 26, as viewed in the first reference direction. In this way, the mechanical vibration generated by the transducer device 10 is prevented from being transmitted to the deck housing 23 via the connecting piece 26, which is beneficial to further reducing the leakage sound of the earphone 20.

In some embodiments, the receiving cavity of the deck housing 23 may communicate with the exterior of the earphone 20 only through the first channel, which is the gap between the connector 26 and the wall of the mounting hole. In other words, no sound leakage hole is provided in the deck case 23. At this time, the leakage sound generated by the earphone 20 through the first end wall 232 and the second end wall 233 is canceled in the far-field phase opposition to reduce the leakage sound.

In some embodiments, the receiving cavity of the deck housing 23 may communicate with the outside of the earphone 20 only through the first channel, which is a gap between the connecting member 26 and the wall surface of the mounting hole, and the second channel, which may have an opening area of less than or equal to 10% of the opening area of the first channel. Wherein the aforementioned second channel may be used as a sound leakage reducing aperture to further adjust or optimize the leakage of the earpiece 20 over the manner in which the sound dipole reduces the leakage. At this time, since the core housing 23 itself can reduce the leakage of the earphone 20 based on the acoustic dipole, the leakage of the earphone 20 can be at a level that is easy for a user to receive, and the opening area of the second channel is much smaller than that of the leakage hole of the related art, which is formed by only punching to reduce the leakage, so that the waterproof and dustproof requirements of the earphone 20 are met. Of course, the aforementioned second channel may not be used as an acoustic hole such as a leak-off hole; but rather serves as an appearance hole, for example, in an embodiment in which the earphone 20 includes two deck modules 22, one deck module 22 has a microphone therein and a deck housing 23 thereof has a microphone hole, and the other deck module 22 has no microphone therein and a deck housing 23 thereof has an appearance hole corresponding to the aforementioned microphone hole; or simply a through hole that is otherwise useless and is provided in the movement case 23.

It should be noted that: in the same or similar embodiment as the example shown in fig. 13, the edge regions of the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 may be connected to the deck case 23, for example, the first end wall 232 presses the edge region of the first vibration-transmitting sheet 141 against the inner cylinder wall 231 and the second end wall 233 presses the edge region of the second vibration-transmitting sheet 142 against the inner cylinder wall 231 to suspend the first magnetic conductor 11 and the structural members (e.g., the coil 12, and further, for example, the third magnetic conductor 151 and the fourth magnetic conductor 152) connected thereto in the accommodating chamber of the deck case 23. Similarly, in the same or similar embodiment as the embodiment shown in any one of fig. 14 to 16, the central regions of the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 may be connected to the magnet assembly 13, for example, respectively connected to both sides of the magnet assembly 13 in the first reference direction, the edge regions of the first vibration-transmitting sheet 141 and the second vibration-transmitting sheet 142 may be connected to the deck case 23, for example, the first end wall 232 presses the edge region of the first vibration-transmitting sheet 141 against the inner cylinder wall 231 and the second end wall 233 presses the edge region of the second vibration-transmitting sheet 142 against the inner cylinder wall 231 to suspend the magnet assembly 13 and the structural members (for example, the coil 12, for example, the third magnetic conductor 151 and the fourth magnetic conductor 152) connected thereto within the accommodation chamber of the deck case 23.

Further, the earphone 20 may include a mass connected to the deck housing 23, where the mass includes at least one of an air conduction speaker, a battery, a circuit board, function keys, and a microphone, so that the earphone 20 can perform a corresponding function. The mass block may be selectively disposed in the movement case 23 or outside the movement case 23 according to actual requirements. At this time, the aforementioned mass may be fixed to one of the first end wall 232 and the second end wall 233 that is not intended to be in contact with or against the skin of the user, or to the inner cylinder wall 231, regardless of whether the aforementioned mass is provided inside the deck housing 23 or outside the deck housing 23. Notably, are: when the mass is an air-conduction speaker, the mass may be preferably fixed to the inner cylinder wall 231 such that the vibration direction of the air-conduction speaker is not parallel to the vibration direction of the transducer apparatus 10, for example, is orthogonal to each other.

The foregoing description is only a partial embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent devices or equivalent process transformations made by using the descriptions and the drawings of the present application, or direct or indirect application to other related technical fields, are included in the patent protection scope of the present application.

Claims

1. The transducer comprises a first magnetizer, a coil and a magnet assembly, wherein the orthographic projection of the coil on a reference plane perpendicular to a first reference direction surrounds the periphery of the orthographic projection of at least part of the first magnetizer on the reference plane, the orthographic projection of the magnet assembly on the reference plane surrounds the periphery of the orthographic projection of the coil on the reference plane, the coil is fixed on the inner side of the magnet assembly facing the first magnetizer, the coil and the first magnetizer are arranged at intervals in a second reference direction perpendicular to the first reference direction, and a magnetic field generated after the coil inputs an excitation signal interacts with a magnetic field formed by the magnet assembly so that the first magnetizer and the magnet assembly can move relatively.

2. The transducer of claim 1, wherein the magnet assembly comprises a first magnet and a second magnet stacked in the first reference direction, the first magnet having a magnetic field direction different from the magnetic field direction of the second magnet, the coil being superimposed on an interface between the first magnet and the second magnet when orthographic projected onto an inner peripheral surface of the magnet assembly in the second reference direction.

3. The transducer apparatus of claim 2, wherein the magnet assembly includes a second magnetizer, the coil being secured to an inner side of the second magnetizer facing the first magnetizer.

4. A transducer according to claim 3, wherein the magnetic field direction of the first magnet and the magnetic field direction of the second magnet are opposite to each other and are both parallel to the first reference direction.

5. The transducer device according to claim 3, wherein the second magnetic conductor includes a cylindrical portion and an annular portion connected to an outer peripheral surface of the cylindrical portion, the annular portion being interposed between the first magnetic body and the second magnetic body, and the coil is fixed inside the cylindrical portion toward the first magnetic conductor.

6. The transducer of claim 5, wherein the second magnetic conductor includes a first limit portion and a second limit portion connected to the cylindrical portion, the first limit portion and the second limit portion being located on both sides of the coil in the first reference direction, respectively, to limit the coil in the first reference direction.

7. The transducer of claim 5, wherein the transducer comprises a first vibration-transmitting piece and a second vibration-transmitting piece, the first vibration-transmitting piece and the second vibration-transmitting piece are respectively located at two sides of the coil in the first reference direction, the first vibration-transmitting piece connects one end of the first magnetizer and the outer side of the first magnet facing away from the second magnet, and the second vibration-transmitting piece connects the other end of the first magnetizer and the outer side of the second magnet facing away from the first magnet.

8. The transducer device according to claim 7, wherein the transducer device includes a third magnetizer and a fourth magnetizer connected to both ends of the first magnetizer, respectively, the third magnetizer and the fourth magnetizer being projected and overlapped with the cylindrical portion in the first reference direction, respectively.

9. The transducer apparatus of claim 7, wherein the third magnetic conductor is located on an inner side of the first vibration transmitting sheet facing the second vibration transmitting sheet, and the fourth magnetic conductor is located on an inner side of the second vibration transmitting sheet facing the first vibration transmitting sheet.

10. The transducer assembly of claim 7, wherein the transducer assembly has an edge region of the first vibration-transmitting plate that is non-coplanar with a central region of the first vibration-transmitting plate and an edge region of the second vibration-transmitting plate that is non-coplanar with a central region of the second vibration-transmitting plate in a non-operational state in which the coil is not receiving an excitation signal.

11. The transducer assembly of claim 10, wherein the first vibration-transmitting sheet has an edge region spaced from the central region of the first vibration-transmitting sheet in the first reference direction by a distance greater than or equal to 0.4mm, and the second vibration-transmitting sheet has an edge region spaced from the central region of the second vibration-transmitting sheet in the first reference direction by a distance greater than or equal to 0.4mm.

12. The transducer apparatus of claim 10, wherein in the first reference direction, a length of the first magnetic conductor is greater than a thickness of the magnet assembly such that a central region of the first vibration transfer sheet is farther from the magnet assembly than an edge region of the first vibration transfer sheet and a central region of the second vibration transfer sheet is farther from the magnet assembly than an edge region of the second vibration transfer sheet.

13. The transducer apparatus of claim 7, wherein the first vibration-transmitting sheet comprises a first spoke comprising a plurality of first spokes that extend helically outward from a center of the first vibration-transmitting sheet, and the second vibration-transmitting sheet comprises a second spoke comprising a plurality of second spokes that extend helically outward from a center of the second vibration-transmitting sheet, the spiral directions of the first and second spokes at the same location being opposite to each other as viewed in the first reference direction.

14. The transducer device according to claim 7, wherein the first vibration-transmitting sheet includes a first spoke including a plurality of first spokes spirally spreading out from a center of the first vibration-transmitting sheet, the first spoke being further divided into a first subregion and a second subregion nested with each other in a radial direction of the first vibration-transmitting sheet, spiral directions of the first spokes in the first subregion and the second subregion being opposite to each other, the second vibration-transmitting sheet including a second spoke including a plurality of second spokes spirally spreading out from a center of the second vibration-transmitting sheet, the second spoke being further divided into a third subregion and a fourth subregion nested with each other in a radial direction of the second vibration-transmitting sheet, spiral directions of the second spokes in the third subregion and the fourth subregion being opposite to each other.

15. The earphone is characterized by comprising a support assembly and a core module connected with the support assembly, wherein the support assembly is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell and the transduction device according to any one of claims 1-14, the core shell is connected with the support assembly, and the transduction device is arranged in a containing cavity of the core shell.

16. The earphone of claim 15, wherein the deck module includes a vibration damping sheet and a vibration panel, the transducer is suspended in the receiving cavity by the vibration damping sheet, and the vibration panel is connected to the first magnetizer and is configured to transmit mechanical vibrations generated by the transducer to a user.

17. The earphone of claim 16, wherein the core module comprises a connecting piece, the core housing comprises an inner cylinder wall, a first end wall and a second end wall which are respectively connected with two ends of the inner cylinder wall, the first end wall and the second end wall are respectively positioned at two opposite sides of the transduction device in the first reference direction, the first end wall is provided with a mounting hole, the vibration panel is positioned outside the core housing, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the core housing through the mounting hole and is connected with the first magnetizer; wherein, the area of vibration panel is greater than the area of mounting hole, the area of mounting hole is greater than the area of connecting piece is observed along first reference direction.

18. The earphone of claim 17, wherein the receiving chamber communicates with the exterior of the earphone only through a channel, the channel being a gap between the connector and a wall of the mounting hole.

19. The earphone of claim 17, wherein the connector is an integrally formed structural member with the vibration panel, the connector being nested on the first magnetic conductor.

20. The earphone of claim 16, wherein the number of the vibration damping pieces is two, the two vibration damping pieces are respectively located at two sides of the coil in the first reference direction, central areas of the two vibration damping pieces are respectively connected with two ends of the first magnetizer in the first reference direction, and edge areas of the two vibration damping pieces are respectively connected with the core shell.

21. The earphone of claim 15, wherein the cartridge housing comprises an inner cylinder wall, and a first end wall and a second end wall respectively connected to two ends of the inner cylinder wall, the first end wall and the second end wall being respectively located on opposite sides of the transducer device in the first reference direction and enclosing the inner cylinder wall to form the accommodating cavity; wherein,

The magnet assembly is connected with the inner cylinder wall, and the first magnetizer is respectively arranged at intervals with the first end wall and the second end wall;

or, the first magnetizer is connected with at least one of the first end wall and the second end wall, and the magnet assembly and the inner cylinder wall are arranged at intervals in the second reference direction.

22. The headset of claim 15, wherein the headset comprises a mass connected to the cartridge housing, the mass comprising at least one of an air conduction speaker, a battery, a circuit board, function keys, and a microphone.