Novel loudspeaker and bone conduction earphone

Abstract

The utility model discloses a novel loudspeaker and bone conduction earphone, comprising;Shell;Voice coil structure, voice coil structure sets up on the shell, and voice coil structure includes the voice coil part that presents vortex extension;Vibration structure, vibration structure sets up on the shell;First solid magnetic structure, first solid magnetic structure sets up on vibration structure, and voice coil part is located at least one end of first solid magnetic structure;Voice coil part audio signal is used with first solid magnetic structure cooperation and realizes the vibration of vibration structure. Adopt above -mentioned scheme, provide a kind of through vortex extension voice coil part to reduce the axial length of voice coil structure, to reduce the overall volume novel loudspeaker and bone conduction earphone.

Description

Technical Field

[0001] This utility model belongs to the field of bone conduction loudspeakers, specifically relating to a novel loudspeaker and bone conduction headphones. Background Technology

[0002] Bone conduction loudspeakers work by inputting varying audio signals into the voice coil, causing the voice coil to generate electromagnetic force under the influence of a magnet's magnetic field, thus making the loudspeaker vibrate. The vibrating loudspeaker acts directly on the skull (temporal bone), and the vibration is transmitted through the bone to the cochlea (inner ear), where it is ultimately perceived by the auditory nerve.

[0003] Existing bone conduction loudspeakers typically include a housing, a diaphragm, a magnet, and a voice coil. The voice coil is mounted on the housing, the magnet is mounted on the diaphragm, and the diaphragm and housing are connected together. Among these, the existing voice coils are all in a... Figure 1 The spiral arrangement shown is designed to make the overall axial length of the voice coil longer, resulting in a larger overall volume of the assembled loudspeaker. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of loudspeaker and bone conduction headphones that reduces the axial length of the voice coil structure by extending the voice coil in a vortex shape, thereby reducing the overall volume.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel loudspeaker, characterized in that it comprises: a housing; a voice coil structure disposed on the housing, the voice coil structure including a voice coil portion extending in a spiral shape; a vibrating structure disposed on the housing; a first solid magnet structure disposed on the vibrating structure, the voice coil portion being located at at least one end of the first solid magnet structure; the voice coil portion transmits an audio signal to cooperate with the first solid magnet structure to realize the vibration of the vibrating structure.

[0007] The present invention is further configured to include a PCB, wherein the voice coil portion includes a first voice coil portion printed or etched on the PCB.

[0008] The present invention is further configured such that: the PCB includes at least two printed circuit boards, the number of first voice coil portions is at least two, and the at least two first voice coil portions are disposed on different printed circuit boards.

[0009] The present invention is further configured such that at least two first voice coil portions disposed on different printed circuit boards are arranged in series.

[0010] The present invention is further configured such that: the PCB is a flexible circuit board; and / or, the outer shell is provided with an assembly cavity, the two ends of the assembly cavity are provided with a first opening and a second opening through the outer shell, a first solid magnetic structure is provided in the assembly cavity, a vibration structure is provided at the end of the first solid magnetic structure facing the first opening, and the PCB is provided at the end of the first solid magnetic structure facing the second opening.

[0011] The present invention is further configured such that: the voice coil portion includes a second voice coil portion, which is formed by winding a wire.

[0012] The present invention is further configured such that: a support plate is provided on the outer shell, and the second voice coil portion is provided on the support plate; and / or, it further includes a second solid magnetic structure, the second solid magnetic structure and the second voice coil portion are fixedly arranged, the second voice coil portion is arranged around the outer periphery of the second solid magnetic structure, and the magnetic poles of the second solid magnetic structure facing the first solid magnetic structure and the magnetic poles of the first solid magnetic structure facing the second solid magnetic structure are arranged in the same way.

[0013] The present invention is further configured such that: the support plate is made of PCB; and / or, the outer shell is provided with an assembly cavity, the two ends of the assembly cavity are provided with a first opening and a second opening through the outer shell, a first magnetic structure is provided in the assembly cavity, a vibration structure is provided at the end of the first magnetic structure facing the first opening, and the support plate is provided at the end of the first magnetic structure facing the second opening.

[0014] The present invention is further configured such that: the number of second voice coil portions is one, and the second voice coil portion is a single-layer structure in which a wire extends in a spiral shape from the inside to the outside; or, the number of second voice coil portions is multiple, each second voice coil portion is a single-layer structure in which a wire extends in a spiral shape from the inside to the outside, each second voice coil portion is stacked, and adjacent second voice coil portions are connected in series; or, the second voice coil portion includes multiple stacked portions arranged radially outward, each stacked portion is formed by winding a wire in a spiral direction for at least two turns, and adjacent stacked portions are connected by wires extending in a spiral shape.

[0015] The present invention is further configured such that the projection of the first solid magnetic structure along the vibration direction and the voice coil portion are at least partially overlapped.

[0016] The present invention is further configured such that: the number of voice coil portions is one set, and the voice coil portions are disposed at one end of the first solid magnetic structure; the vibration structure adopts a diaphragm, and the diaphragm and the voice coil portions are disposed at both ends of the first solid magnetic structure.

[0017] The present invention is further configured such that the number of voice coil portions is two sets, and the two sets of voice coil portions are respectively disposed at both ends of the first solid magnetic structure.

[0018] The present invention is further configured to include a second solid magnetic structure, which is fixedly disposed relative to the outer shell; the vibration structure is a vibrating plate, which is disposed between the first solid magnetic structure and one of the voice coil portions; the second solid magnetic structure and the vibrating plate are disposed at both ends of the first solid magnetic structure; the magnetic poles of the second solid magnetic structure facing the first solid magnetic structure and the magnetic poles of the first solid magnetic structure facing the second solid magnetic structure are arranged in the same manner.

[0019] A bone conduction headphone, characterized in that it includes the novel speaker described above.

[0020] By adopting the above technical solution, a vortex-extended voice coil section is used to make full use of the space on the inner circumference of the voice coil section for wiring, which makes the effective length of the voice coil section longer to ensure vibration intensity, and greatly compresses the length of the voice coil structure in the vertical direction, so that the assembly space required in the vertical direction of the voice coil structure is smaller. Thus, a shell and a first solid magnet structure with a smaller vertical length can be used to compress the volume of the loudspeaker as a whole. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an existing voice coil;

[0023] Figure 2 This is an assembly drawing of Embodiment 1 of the present utility model;

[0024] Figure 3 This is an exploded view of Embodiment 1 of this utility model;

[0025] Figure 4 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0026] Figure 5 This is a schematic diagram of the printed circuit board in Embodiment 1 of this utility model;

[0027] Figure 6 for Figure 4 Enlarged view of A in the middle;

[0028] Figure 7 This is a schematic diagram of a second voice coil section in Embodiment 1 of this utility model;

[0029] Figure 8 This is a schematic diagram of a second voice coil section in Embodiment 1 of this utility model;

[0030] Figure 9 This is a cross-sectional view of Embodiment 2 of the present invention;

[0031] Figure 10 This is a cross-sectional view of Embodiment 2 of the present invention;

[0032] Figure 11 This is a cross-sectional view of Embodiment 2 of the present invention;

[0033] Figure 12 This is a cross-sectional view of Embodiment 4 of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Outer shell;

[0036] 11. Assembly cavity;

[0037] 111. First opening; 112. Second opening;

[0038] 2. Voice coil structure;

[0039] 21. First voice coil section; 22. Second voice coil section;

[0040] 221. Layered portion;

[0041] 3. Vibrating structure;

[0042] 31. Fixing part; 32. Connecting part; 33. Vibrating part;

[0043] 41. First solid-magnetic structure; 42. Second solid-magnetic structure;

[0044] 5. PCB;

[0045] 51. Printed circuit board;

[0046] 6. Support plate;

[0047] 9. Voice coil. Detailed Implementation

[0048] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0049] Example 1:

[0050] like Figures 2-8 As shown, this utility model discloses a novel loudspeaker, comprising:

[0051] The outer casing 1 has an outer peripheral wall that is cylindrical with the axial direction pointing upward. The outer casing 1 has an assembly cavity 11 inside. The assembly cavity 11 is provided to penetrate the outer casing 1 vertically to form a first opening 111 at the top and a second opening 112 at the bottom. The inner peripheral wall of the assembly cavity 11 is cylindrical, so that the outer casing 1 as a whole is cylindrical.

[0052] The voice coil structure 2 is disposed in the assembly cavity 11 and close to the second opening 112. The voice coil structure 2 includes a voice coil portion that extends in a spiral shape.

[0053] Vibration structure 3 is disposed inside the assembly cavity 11 and is close to the first opening 111;

[0054] The first magnetic structure 41 is disposed below the vibrating structure 3 and is fixedly connected to the vibrating structure 3 so that the first magnetic structure 41 vibrates with the vibrating structure 3. The voice coil is located at the lower end of the first magnetic structure 41, and a safe distance is provided between the voice coil and the first magnetic structure 41.

[0055] The voice coil section transmits an audio signal to cooperate with the first solid magnet structure 41 to realize the vibration of the vibration structure 3. Due to the setting of the safety distance, the first solid magnet structure 41 and the voice coil section are in a non-contact state to ensure the stability of the vibration.

[0056] Therefore, a vortex-extended voice coil section is adopted to make full use of the space on the inner circumference of the voice coil section for wiring, so that the effective length of the voice coil section is longer to ensure vibration intensity, and the length of the voice coil structure 2 in the vertical direction is greatly compressed, so that the assembly space required in the vertical direction of the voice coil structure 2 is smaller, thereby allowing the use of a housing 1 and a first solid magnet structure 41 with a shorter vertical length to compress the volume of the loudspeaker as a whole.

[0057] In this embodiment, the outer shell 1 is cylindrical, so that the voice coil portion has an arc-shaped vortex structure. In other embodiments, if the outer shell 1 is polygonal, racetrack-shaped, or other irregularly shaped, the voice coil portion has a corresponding polygonal vortex structure, racetrack-shaped vortex structure, or an adapted irregularly shaped vortex structure.

[0058] Specifically, in this embodiment, the vibration structure 3 adopts an integrally molded vibrating plate. The vibrating plate enters the assembly cavity 11 from the upper end of the first opening 111 downwards and is positioned by abutting each other. The vibrating plate is then fixedly installed by means of glue or other methods.

[0059] Specifically, the vibrator includes a fixing part 31, a connecting part 32, and a vibrating part 33. The fixing part 31 is arranged in a ring and is fixedly connected to the outer shell 1. The first magnetic structure 41 is fixedly disposed on the lower side of the vibrating part 33 by means of glue or the like. The connecting part 32 fixes the fixing part 31 and the vibrating part 33 together. When the vibrating part 33 vibrates relative to the fixing part 31, the connecting part 32 deforms to adapt to the vibration.

[0060] Preferably, there are multiple connecting parts 32. In this embodiment, four connecting parts 32 are used. Each connecting part 32 is arranged at circumferential intervals. Each connecting part 32 extends circumferentially from one side of the connecting fixing part 31 to the side of the connecting vibrating part 33, so that the circumferentially extended connecting parts 32 can achieve a larger amplitude of the vibrating part 33 by appropriate torsion when the vibrating part 33 vibrates up and down.

[0061] In this embodiment, the voice coil section includes a first voice coil section 21 and a second voice coil section 22. Preferably, the first voice coil section 21 and the second voice coil section 22 are arranged in parallel. When an audio signal is transmitted, the current through the first voice coil section 21 and the second voice coil section 22 is clockwise or counterclockwise. This allows the first voice coil section 21 and the second voice coil section 22 to be input with the first solid magnetic structure 41, thereby achieving a higher intensity vibration of the vibration structure 3.

[0062] Specifically, it also includes PCB5, which is fixedly disposed at the bottom of housing 1 to close the bottom of assembly cavity 11, wherein the first voice coil portion 21 is formed on PCB5 by printing or etching.

[0063] Therefore, PCB5 serves as the carrier of the first voice coil section 21 so that the vertical height required by the first voice coil section 21 is only the thickness of PCB5, resulting in a smaller volume of the corresponding part of the first voice coil section 21 and a more stable layout of the first voice coil section 21.

[0064] Preferably, the PCB5 includes at least two printed circuit boards 51, and the number of first voice coil portions 21 is at least two. In this embodiment, each PCB5 has a first voice coil portion 21.

[0065] The arrangement of multiple first voice coil sections 21 through the multilayer printed circuit board 51 structure significantly increases the reaction force of the first voice coil section 21, thereby enhancing the vibration intensity of the diaphragm.

[0066] The first voice coil units 21 disposed on different printed circuit boards 51 can be connected in series or in parallel. Preferably, in this embodiment, the first voice coil units 21 are connected in series.

[0067] In this embodiment, PCB5 is a flexible circuit board, which utilizes the small thickness of the flexible circuit board to further reduce the volume of the first voice coil section 21, and the flexible circuit board has a smaller relative mass, thereby reducing the overall mass of the speaker.

[0068] Specifically, the second voice coil 22 is made of wire, so that when an audio signal is input to the wound second voice coil 22, the audio signal (current) flows along the winding direction of the second voice coil 22 and vibrates in conjunction with the first solid magnetic structure 41.

[0069] The wire used to wind the second voice coil 22 is made of copper wire, and the outer circumference of the copper wire is painted to make the outer circumference of the copper wire insulated.

[0070] In this embodiment, the second voice coil 22 is first electrically connected to the PCB5 by welding, and then fixed to the PCB5 by adhesive bonding.

[0071] In this configuration, PCB5 serves as a support plate 6 to effectively fix and support the second voice coil section 22.

[0072] Furthermore, in this embodiment, a second magnetic structure 42 is also provided on the PCB5. The second magnetic structure 42 is glued and fixed to the PCB5, and the second voice coil portion 22 is arranged around the outer periphery of the second magnetic structure 42. In this embodiment, the N pole of the first magnetic structure 41 is on top and the S pole is on the bottom, while the N pole of the second magnetic structure 42 is on the bottom and the S pole is on top. That is, the magnetic poles of the second magnetic structure 42 facing the first magnetic structure 41 and the magnetic poles of the first magnetic structure 41 facing the second magnetic structure 42 are arranged in the same way.

[0073] Therefore, when an audio signal is transmitted, the first solid magnetic structure 41 vibrates under the magnetic field generated by the combination of the voice coil and the second solid magnetic structure 42. When no audio signal is transmitted, the second solid magnetic structure 42 with opposite magnetic poles can exert an upward force on the first solid magnetic structure 41, so that the diaphragm is not easily subjected to traction deformation in the non-working state, and prevents irreversible deformation of the diaphragm due to long-term deformation.

[0074] In other embodiments, the second solid magnet structure 42 may not be required.

[0075] Specifically, in this embodiment, both the first magnetic structure 41 and the second magnetic structure 42 are magnets. In other embodiments, a combination of magnets and other magnetically conductive structures may also be used.

[0076] Among them, such as Figure 7 As shown, in this embodiment, there is one second voice coil portion 22. The second voice coil portion 22 is a single-layer structure in which the wire extends in a spiral shape from the inside to the outside. The single-layer second voice coil portion 22 can compress the length of the second voice coil portion 22 in the vertical direction to the minimum.

[0077] Furthermore, there can be multiple second voice coil sections 22, each of which is as follows: Figure 7 As shown, it is a single-layer structure with wires extending in a spiral shape from the inside out. Each second voice coil part 22 is stacked alternately in the up-down direction, and adjacent second voice coil parts 22 are connected in series. That is, the inner peripheral terminal of the second voice coil part 22 is welded to the inner peripheral terminal of the adjacent second voice coil part 22, and the outer peripheral terminal of the second voice coil part 22 is welded to the outer peripheral terminal of the other adjacent second voice coil part 22. Since it has been stacked alternately in the up-down direction, the second voice coil parts 22 connected in series have the same energizing direction, which is either clockwise or counterclockwise, to ensure that the electromagnetic force components generated are in the same direction. That is, at a certain instant, the audio signal only generates an upward or downward electromagnetic force component.

[0078] The second voice coil section 22 can also be adopted. Figure 8 The structure shown includes a second voice coil portion 22 comprising multiple stacked portions 221 arranged radially outward, four of which are illustrated. Each stacked portion 221 is formed by winding a wire in a spiral direction for at least two turns, seven turns as shown. Adjacent stacked portions 221 are connected by wires extending in a spiral pattern. Therefore, by arranging multiple stacked portions 221 from the inside out, the inner stacked portions 221 are wound sequentially from the inside out before the outer stacked portions 221 are processed in a spiral pattern, making the processing more convenient.

[0079] It should be noted that the projection of the first solid magnetic structure 41 along the vertical direction overlaps with the voice coil portion at least partially, thereby increasing the horizontal coverage area of ​​the voice coil portion and increasing the length and number of turns of the voice coil portion to improve the vibration intensity.

[0080] Example 2:

[0081] like Figure 9 As shown, a novel loudspeaker has the same main structure as Embodiment 1, except that the second voice coil 22 is not provided, so that the first voice coil 21 and the second solid magnet component form a superimposed magnetic field and interact with the first solid magnet component to realize the vibration of the diaphragm.

[0082] Example 3:

[0083] like Figure 10 As shown, a novel loudspeaker has the same main structure as Embodiment 1, except that the first voice coil part 21 and PCB5 are not set. The outer periphery of the second voice coil part 22 is directly fixed to the outer shell 1 by adhesive bonding. The outer periphery of the second solid magnet structure 42 is directly fixed to the inner periphery of the second voice coil by adhesive bonding. This allows the second voice coil part 22 and the second solid magnet component to form a superimposed magnetic field, which interacts with the first solid magnet component to achieve the vibration of the diaphragm.

[0084] Example 4:

[0085] like Figure 11 As shown, a novel loudspeaker has the same main structure as Embodiment 1, except that the first voice coil 21 is omitted. Instead, a support plate 6 is installed at the second opening 112 of the housing 1, and the bottom of the second voice coil 22 is fixed to the top of the support plate 6 by adhesive bonding. The support plate 6 can be made of plastic sheet or PCB 5. When the support plate 6 is made of plastic sheet, the second voice coil 22 can be connected to an external circuit to input audio signals by extending outward conductive wires. When the support plate 6 is made of PCB 5, the second voice coil 22 can be directly electrically connected to the PCB 5 and connected to an external circuit through the PCB 5 to input audio signals. Similar to Embodiment 3, the second voice coil 22 and the second solid magnet component combine to form a superimposed magnetic field, which interacts with the first solid magnet component to achieve the vibration of the diaphragm.

[0086] Example 5:

[0087] like Figure 12 As shown, a novel loudspeaker has the same main structure as Embodiment 1, except that a voice coil is set above the diaphragm. The voice coil above and below the first magnetic structure 41 are connected in parallel. When the same audio signal is received, the current direction of the voice coil above the first magnetic structure 41 and the current direction of the voice coil below the first magnetic structure 41 are set in opposite directions, clockwise and counterclockwise. Thus, the force exerted by the voice coil above the first magnetic structure 41 on the first magnetic structure 41 in the vertical component direction is the same as the force exerted by the voice coil below the first magnetic structure 41 on the first magnetic structure 41 in the vertical component direction, thereby enhancing the vibration intensity of the loudspeaker.

[0088] The voice coil portion above the first solid magnetic structure 41 may be only the first voice coil portion 21 or only the second voice coil portion 22, or a combination of the first voice coil portion 21 and the second voice coil portion 22.

[0089] Similarly, the voice coil portion below the first solid magnet structure 41 may use only the first voice coil portion 21 or only the second voice coil portion 22, or a combination of the first voice coil portion 21 and the second voice coil portion 22.

[0090] Example 6:

[0091] A bone conduction headphone, comprising a novel speaker according to embodiments one through five.

[0092] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new loudspeaker characterized by, include: Outer shell (1); A voice coil structure (2) is disposed on the outer shell (1), and the voice coil structure (2) includes a voice coil portion extending in a vortex shape; Vibration structure (3), the vibration structure (3) is disposed on the outer shell (1); A first solid magnetic structure (41) is disposed on the vibrating structure (3), and the voice coil portion is located at at least one end of the first solid magnetic structure (41); The voice coil section transmits an audio signal to cooperate with the first solid magnetic structure (41) to realize the vibration of the vibration structure (3).

2. The new loudspeaker of claim 1, characterized by: It also includes a PCB (5), wherein the voice coil portion includes a first voice coil portion (21) printed or etched on the PCB (5).

3. The new loudspeaker of claim 2, characterized by: The PCB (5) includes at least two printed circuit boards (51), and the number of the first voice coil (21) is at least two, with the at least two first voice coils (21) disposed on different printed circuit boards (51).

4. The new loudspeaker of claim 3, characterized by: At least two of the first voice coil portions (21) disposed on different printed circuit boards (51) are arranged in series.

5. The new loudspeaker of claim 2, characterized by: The PCB (5) is a flexible circuit board; and / or, the housing (1) is provided with an assembly cavity (11), the two ends of the assembly cavity (11) are provided with a first opening (111) and a second opening (112) through the housing (1), the first solid magnetic structure (41) is disposed in the assembly cavity (11), the vibration structure (3) is disposed at one end of the first solid magnetic structure (41) facing the first opening (111), and the PCB (5) is disposed at one end of the first solid magnetic structure (41) facing the second opening (112).

6. The novel loudspeaker according to any one of claims 1-5, characterized in that: The voice coil section includes a second voice coil section (22), which is made of wire.

7. The novel loudspeaker of claim 6, wherein: A support plate (6) is provided on the outer casing (1), and the second voice coil portion (22) is disposed on the support plate (6); and / or, It also includes a second solid magnetic structure (42), the second solid magnetic structure (42) and the second voice coil portion (22) are fixedly arranged, the second voice coil portion (22) is arranged around the outer periphery of the second solid magnetic structure (42), and the magnetic poles of the second solid magnetic structure (42) facing the first solid magnetic structure (41) and the magnetic poles of the first solid magnetic structure (41) facing the second solid magnetic structure (42) are arranged in the same way.

8. The novel loudspeaker of claim 7, characterized in that: The support plate (6) is made of PCB (5); and / or, the outer shell (1) is provided with an assembly cavity (11), the two ends of the assembly cavity (11) are provided with a first opening (111) and a second opening (112) through the outer shell (1), the first solid magnetic structure (41) is provided in the assembly cavity (11), the vibration structure (3) is provided at one end of the first solid magnetic structure (41) facing the first opening (111), and the support plate (6) is provided at one end of the first solid magnetic structure (41) facing the second opening (112).

9. The novel loudspeaker of claim 6, wherein: The number of the second voice coil portion (22) is one, and the second voice coil portion (22) is a single-layer structure in which a wire extends in a spiral shape from the inside to the outside; or, The number of second voice coil portions (22) is multiple, each second voice coil portion (22) is a single-layer structure in which a wire extends in a spiral shape from the inside to the outside, and the second voice coil portions (22) are stacked, with adjacent second voice coil portions (22) connected in series; or, The second voice coil portion (22) includes multiple stacked portions (221) arranged radially outward. Each stacked portion (221) is formed by winding a wire in a spiral direction for at least two turns. Adjacent stacked portions (221) are connected by wires extending in a spiral shape.

10. The new loudspeaker of claim 1, characterized by: The projection of the first solid magnetic structure (41) along the vibration direction and the voice coil portion are at least partially overlapped.

11. The new loudspeaker of claim 1, characterized by: The number of voice coil sections is one set, and the voice coil section is disposed at one end of the first solid magnetic structure (41); The vibration structure (3) uses a vibrating plate, and the vibrating plate and the voice coil are located at both ends of the first solid magnetic structure (41).

12. The new loudspeaker of claim 1, characterized by: The number of voice coil sections is two sets, and the two sets of voice coil sections are respectively disposed at both ends of the first solid magnet structure (41).

13. The novel loudspeaker of claim 12, characterized in that: It also includes a second solid magnetic structure (42), which is fixedly disposed relative to the outer shell (1); The vibration structure (3) adopts a vibrating plate, which is disposed between the first solid magnetic structure (41) and one of the voice coil portions; The second solid magnetic structure (42) and the vibrating plate are disposed at both ends of the first solid magnetic structure (41); The magnetic poles of the second solid magnetic structure (42) facing the first solid magnetic structure (41) and the magnetic poles of the first solid magnetic structure (41) facing the second solid magnetic structure (42) are arranged in the same way.

14. A bone conduction earpiece, characterized by: The novel loudspeaker includes any one of claims 1-13.

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