Loudspeaker

Abstract

The present invention provides a loudspeaker. The loudspeaker comprises a housing and a moving iron assembly fixed to the housing. The moving iron assembly comprises: a first magnetic mechanism and a second magnetic mechanism, as well as a magnetically conductive diaphragm, the magnetically conductive diaphragm comprising an annular surround and a first moving iron unit and a second moving iron unit located within the surround, and the first magnetic mechanism and the second magnetic mechanism both being magnetized in a vibration direction parallel to the magnetically conductive diaphragm and jointly driving the magnetically conductive diaphragm to vibrate and produce sound; and a first coil and a second coil, the first coil and the second coil respectively surrounding the first moving iron unit and the second moving iron unit at intervals, the first coil and the second coil being horizontally and oppositely arranged, and the sides of the first coil and the second coil away from each other being arranged corresponding to the first magnetic mechanism and the second magnetic mechanism, respectively. Compared to the existing technology, the loudspeaker in the present invention is provided with magnetic flux control in an armature circuit and great driving force, and dual-end balanced driving is achieved by means of separated moving iron units.

Description

Loudspeaker TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-acoustic conversion, in particular to a loudspeaker. BACKGROUND

[0002] With the advent of the mobile internet era, loudspeakers are widely used in mobile phones, notebook computers and other portable electronic devices. With the rapid development of these portable electronic devices, people's functional requirements for them are becoming stronger and stronger, and the loudspeakers applied to them are also rapidly developing. In addition, with the development of the need for thin mobile phones, the quality requirements for the micro loudspeakers used in them are also becoming higher and higher. As a voice function playing device, the size of the back cavity of the loudspeaker is directly related to the improvement of the acoustic performance of the product. TECHNICAL PROBLEM

[0003] In the related art, the existing loudspeaker includes a shell, a moving iron arranged on the shell, and an armature system for driving the moving iron to vibrate, the armature system including a magnetic steel and a coil, the coil generates a mutual magnetic field with the magnetic steel after being electrified to drive the armature to vibrate. However, the coil and the moving iron are rigidly integrated, cannot realize large amplitude by itself, and can only realize amplitude driving through a cantilever beam and a connecting shaft. The magnetic steel is arranged on both sides of the coil in a stacked manner. Due to the height of the coil and the magnetic steel, the overall height increases after being arranged in a stacked manner, thereby limiting the limit of the ultra-thin of the overall loudspeaker, and the user experience effect is poor. At the same time, since the magnetic flux formed by the single moving iron and the armature system can only realize single-end driving, the armature is not linked, and there is large amplitude attraction, and the driving effect is poor.

[0004] Therefore, it is necessary to provide a new loudspeaker to solve the above technical problems. TECHNICAL SOLUTION

[0005] The purpose of the present application is to provide a loudspeaker which can realize magnetic flux control of armature loop, large driving force, and double-end balanced driving of moving iron split body.

[0006] In order to achieve the above purpose, the present application provides a loudspeaker, comprising a shell and a moving iron assembly fixed to the shell; the moving iron assembly comprises:

[0007] A first magnetic mechanism and a second magnetic mechanism, the first magnetic mechanism and the second magnetic mechanism are fixed to both ends of the shell and are spaced apart from each other;

[0008] The magnetically conductive vibrating film comprises a folded ring in a ring shape, and a first moving iron unit and a second moving iron unit located in the folded ring, the first moving iron unit and the second moving iron unit are respectively located on one side of the shell and are horizontally spaced apart; the outer periphery of the folded ring is respectively fixed to the first magnetic mechanism and the second magnetic mechanism, and the inner periphery of the folded ring is respectively fixed to the outer periphery of the first moving iron unit and the outer periphery of the second moving iron unit; the first magnetic mechanism and the second magnetic mechanism are magnetized along the vibration direction parallel to the magnetically conductive vibrating film and jointly drive the magnetically conductive vibrating film to vibrate and sound; and

[0009] The first coil and the second coil are respectively spaced around the first moving iron unit and the second moving iron unit; the first coil and the second coil are horizontally opposite to each other, and the side away from each other of the first coil and the second coil is respectively arranged corresponding to the first magnetic mechanism and the second magnetic mechanism; the side close to each other of the first coil and the second coil is spaced apart to form a sound outlet.

[0010] Preferably, the loudspeaker further comprises a first magnetic conductive sheet and a second magnetic conductive sheet arranged opposite to each other, and a third magnetic conductive sheet and a fourth magnetic conductive sheet arranged opposite to each other;

[0011] The first magnetic conductive sheet and the second magnetic conductive sheet are respectively attached and fixed to the side away from the shell of the first coil and the second coil, and the third magnetic conductive sheet and the fourth magnetic conductive sheet are respectively attached and fixed to the side close to the shell of the first coil and the second coil, the first coil is fixed to the first magnetic mechanism through the third magnetic conductive sheet, and the second coil is fixed to the second magnetic mechanism through the fourth magnetic conductive sheet.

[0012] Preferably, the loudspeaker further comprises a first magnetic conductive spring sheet, a second magnetic conductive spring sheet, and a non-magnetic conductive connecting support, one end of the first magnetic conductive spring sheet is fixed to the side away from the shell of the third magnetic conductive sheet, one end of the second magnetic conductive spring sheet is fixed to the side away from the shell of the fourth magnetic conductive sheet, the other end of the first magnetic conductive spring sheet and the other end of the second magnetic conductive spring sheet are respectively fixed to the side close to the shell of the non-magnetic conductive connecting support, and the side away from the shell of the non-magnetic conductive connecting support is respectively attached and fixed to the side close to the shell of the first moving iron unit and the second moving iron unit.

[0013] Preferably, the first magnetic mechanism comprises a first magnetic conductive material piece in a U shape, a first magnetic steel and a second magnetic steel respectively fixed to the first magnetic conductive material piece and arranged opposite to each other, the first moving iron unit is at least partially located between the first magnetic steel and the second magnetic steel, and the side away from the second coil of the first coil is respectively arranged corresponding to the first magnetic steel and the second magnetic steel.

[0014] The second magnetic mechanism comprises a second magnetic conducting material piece in a U shape, a third magnetic steel and a fourth magnetic steel fixed to the second magnetic conducting material piece respectively and arranged opposite to each other, and the second moving iron unit is located at least partially between the third magnetic steel and the fourth magnetic steel, and the second coil is arranged corresponding to the third magnetic steel and the fourth magnetic steel respectively on the side away from the first coil.

[0015] The opening direction of the first magnetic conducting material piece is arranged opposite to the opening direction of the second magnetic conducting material piece.

[0016] Preferably, the first coil is arranged in the first magnetic conducting material piece, and the second coil is arranged in the second magnetic conducting material piece.

[0017] Preferably, the magnetization direction of the first magnetic steel is the same as the magnetization direction of the second magnetic steel, the magnetization direction of the third magnetic steel is the same as the magnetization direction of the fourth magnetic steel, and the magnetization direction of the first magnetic steel is opposite to the magnetization direction of the third magnetic steel.

[0018] Preferably, the loudspeaker further comprises two suction force compensation mechanisms arranged opposite to each other, the two suction force compensation mechanisms are fixed to the two ends of the shell respectively, and the two suction force compensation mechanisms are arranged corresponding to the first magnetic mechanism and the second magnetic mechanism respectively.

[0019] Preferably, the suction force compensation mechanism comprises a fixed piece in a U shape spaced apart from the first magnetic mechanism respectively, a center magnetic steel fixed to the fixed piece, a magnetic conducting connecting piece fixed to the side of the center magnetic steel close to the first magnetic mechanism, and a fifth magnetic steel and a sixth magnetic steel fixed to the fixed piece respectively and arranged opposite to each other, the fifth magnetic steel and the sixth magnetic steel are located on the two sides of the center magnetic steel respectively, and the magnetic conducting connecting piece passes through the first magnetic mechanism and is fixedly connected with the magnetic conducting diaphragm.

[0020] The magnetization direction of the center magnetic steel is opposite to the magnetization direction of the fifth magnetic steel and the magnetization direction of the sixth magnetic steel respectively.

[0021] Preferably, the loudspeaker further comprises a first magnetic conductor and a second magnetic conductor, the first magnetic conductor is fixed to the end of the first moving iron unit close to the first magnetic mechanism in a stacked manner, the second magnetic conductor is fixed to the end of the second moving iron unit close to the second magnetic mechanism in a stacked manner, and the first magnetic conductor, the second magnetic conductor, the first moving iron unit and the second moving iron unit form a dumbbell type structure.

[0022] Preferably, the loudspeaker further comprises a third magnetic conductor and a fourth magnetic conductor, the third magnetic conductor is perpendicular to the first moving iron unit, the third magnetic conductor is located between the first coil and the first magnetic mechanism, the fourth magnetic conductor is perpendicular to the second moving iron unit, the fourth magnetic conductor is located between the second coil and the second magnetic mechanism; the third magnetic conductor and the first moving iron unit form a cross-shaped structure, and the fourth magnetic conductor and the second moving iron unit form a cross-shaped structure. Advantages

[0023] Compared with the prior art, in the loudspeaker of the present application, the first magnetic mechanism and the second magnetic mechanism are located at two ends of the shell and are spaced apart from each other; the first moving iron unit and the second moving iron unit are respectively located on one side of the shell and are horizontally spaced apart; the outer periphery of the folded ring is fixed to the first magnetic mechanism and the second magnetic mechanism, respectively, and the inner periphery of the folded ring is fixed to the outer periphery of the first moving iron unit and the outer periphery of the second moving iron unit, respectively; the first magnetic mechanism and the second magnetic mechanism are magnetized along the vibration direction parallel to the magnetic vibration diaphragm and jointly drive the magnetic vibration diaphragm to vibrate and sound; the first coil and the second coil are respectively spaced around the first moving iron unit and the second moving iron unit; the first coil and the second coil are horizontally arranged opposite to each other, and the sides away from each other of the first coil and the second coil are respectively provided with the first magnetic mechanism and the second magnetic mechanism; the sides close to each other of the first coil and the second coil are spaced apart to form a sound outlet. By forming a group of armature drives through the first moving iron unit, the first coil and the first magnetic mechanism, and forming another group of armature drives through the second moving iron unit, the second coil and the second magnetic mechanism, the magnetic circuit and the driving part are designed separately, the magnetic flux control of the armature circuit is facilitated, the first moving iron unit and the second moving iron unit are separately balanced to drive, the driving effect is good, the driving force is large, the vibration is parallel, the driving is direct, the driving force is avoided by the lever, and the user experience effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Fig. 1 is a perspective structural schematic view of the loudspeaker provided by the embodiment of the present application;

[0026] Fig. 2 is a perspective structural exploded view of the loudspeaker provided by the embodiment of the present application;

[0027] Fig. 3 is a cross-sectional view along line A-A of Fig. 1;

[0028] Fig. 4 is a schematic view of a cross structure of a moving iron assembly according to an embodiment of the present application;

[0029] Fig. 5 is a schematic view of a dumbbell structure of a moving iron assembly according to an embodiment of the present application;

[0030] Fig. 6 is a BL curve diagram of Fig. 5;

[0031] Fig. 7 is a BL(z) curve diagram of a moving iron unit according to an embodiment of the present application;

[0032] Fig. 8 is a performance simulation diagram of a moving iron unit according to an embodiment of the present application;

[0033] Fig. 9 is a schematic view of a structure of a moving iron assembly according to an embodiment of the present application. Embodiments of the present application

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] According to the embodiments of the present application shown in Figs. 1 to 9, a loudspeaker 100 is provided, which comprises a shell 120 and a moving iron assembly 110 fixed to the shell 120; the moving iron assembly 110 comprises a first magnetic mechanism 4, a second magnetic mechanism 5, a first coil 6, a second coil 7 and a magnetic conductive diaphragm 8.

[0036] The first magnetic mechanism 4 and the second magnetic mechanism 5 are fixed to one side of the shell 120, and the first magnetic mechanism 4 and the second magnetic mechanism 5 are located at two ends of the shell 120 and spaced from each other; the opening direction of the first magnetic mechanism 4 is opposite to the opening direction of the second magnetic mechanism 5. For example, the first magnetic mechanism 4 is placed on the left side of the shell 120, and the second magnetic mechanism 5 is placed on the right side of the shell 120, so that the initial position of the first moving iron unit 82 and the second moving iron unit 83 is balanced by the magnetic attraction force at the center position.

[0037] Optionally, the first magnetic mechanism 4 and the second magnetic mechanism 5 are symmetrically or asymmetrically arranged.

[0038] The magnetic conductive vibrating film 8 comprises a ring-shaped folded ring 81, a first moving iron unit 82 and a second moving iron unit 83 located in the folded ring 81. The first moving iron unit 82 and the second moving iron unit 83 are respectively located at one side of the shell and horizontally spaced apart. The outer periphery of the folded ring 81 is respectively fixed to the first magnetic mechanism 4 and the second magnetic mechanism 5. The inner periphery of the folded ring 81 is respectively fixed to the outer periphery of the first moving iron unit 82 and the outer periphery of the second moving iron unit 83. The first magnetic mechanism 4 and the second magnetic mechanism 5 are magnetized along the vibration direction parallel to the magnetic conductive vibrating film 8 and jointly drive the magnetic conductive vibrating film 8 to vibrate and emit sound.

[0039] The magnetic conductive vibrating film 8 is arranged in a ring-shaped structure. The outer periphery of the magnetic conductive vibrating film 8 is respectively fixed to the first magnetic mechanism 4 and the second magnetic mechanism 5. The inner periphery of the magnetic conductive vibrating film 8 is respectively fixed to the outer periphery of the first moving iron unit 82 and the outer periphery of the second moving iron unit 83. The first coil 6 and the second coil 7 respectively generate mutual magnetic fields with the first magnetic mechanism 4 and the second magnetic mechanism 5 to drive the magnetic conductive vibrating film 8 to vibrate. The sound emitted by the magnetic conductive vibrating film 8 is emitted from the sound outlet 17, and the user experience effect is good.

[0040] In the embodiment, the first moving iron unit 82 and the second moving iron unit 83 have the same structure. The first moving iron unit 82 comprises a rectangular main body and a rectangular protruding portion extending from one side of the rectangular main body.

[0041] In the embodiment, the first coil 6 and the second coil 7 are respectively spaced around the first moving iron unit 82 and the second moving iron unit 83. The first coil 6 and the second coil 7 are oppositely arranged. The side of the first coil 6 and the second coil 7 away from each other is respectively arranged corresponding to the first magnetic mechanism 4 and the second magnetic mechanism 5. The side of the first coil 6 and the second coil 7 close to each other is spaced apart to form the sound outlet 17. After the first coil 6 and the second coil 7 are energized, the magnetic fields generated by the first magnetic mechanism 4 and the second magnetic mechanism 5 and the first coil 6 and the second coil 7 make the first moving iron unit 82 and the second moving iron unit 83 generate polarity left and right. The magnetic attraction force generated by the first magnetic mechanism 4 and the second magnetic mechanism 5 is related to the position of the first moving iron unit 82 and the second moving iron unit 83 and the current of the first coil 6 and the second coil 7.

[0042] Preferably, the sound outlet 17 can also be a gap formed between the first coil 6 and the first moving iron unit 82 or a gap formed between the second coil 7 and the second moving iron unit 83.

[0043] The position of the sound outlet 17 can be located in the middle of the first coil 6 and the second coil 7; the position of the sound outlet 17 can also be formed by the gap between the first coil 6 and the first magnetic mechanism 4, or formed by the gap between the second coil 7 and the second magnetic mechanism 5.

[0044] In the embodiment, the loudspeaker 100 further comprises a first magnetic guide sheet 9 and a second magnetic guide sheet 10 arranged oppositely, and a third magnetic guide sheet 11 and a fourth magnetic guide sheet 12 arranged oppositely; the first magnetic guide sheet 9 and the second magnetic guide sheet 10 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 away from the shell 120, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 close to the shell 120, the first coil 6 is fixed with the first magnetic mechanism 4 through the third magnetic guide sheet 11, and the second coil 7 is fixed with the second magnetic mechanism 5 through the fourth magnetic guide sheet 12. The first magnetic guide sheet 9 and the third magnetic guide sheet 11 are used to improve the magnetic conductivity of the first coil 6, and the second magnetic guide sheet 10 and the fourth magnetic guide sheet 12 are used to improve the magnetic conductivity of the second coil 7. Optionally, the first magnetic guide sheet 9, the second magnetic guide sheet 10, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are all magnetic sheet structures.

[0045] In the embodiment, the loudspeaker 100 further comprises a first magnetic guide sheet 9 and a second magnetic guide sheet 10 arranged oppositely, and a third magnetic guide sheet 11 and a fourth magnetic guide sheet 12 arranged oppositely; the first magnetic guide sheet 9 and the second magnetic guide sheet 10 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 away from the shell 120, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 close to the shell 120, the first coil 6 is fixed with the first magnetic mechanism 4 through the third magnetic guide sheet 11, and the second coil 7 is fixed with the second magnetic mechanism 5 through the fourth magnetic guide sheet 12. The first magnetic guide sheet 9 and the third magnetic guide sheet 11 are used to improve the magnetic conductivity of the first coil 6, and the second magnetic guide sheet 10 and the fourth magnetic guide sheet 12 are used to improve the magnetic conductivity of the second coil 7. Optionally, the first magnetic guide sheet 9, the second magnetic guide sheet 10, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are all magnetic sheet structures.

[0045] In the embodiment, the loudspeaker 100 further comprises a first magnetic guide sheet 9 and a second magnetic guide sheet 10 arranged oppositely, and a third magnetic guide sheet 11 and a fourth magnetic guide sheet 12 arranged oppositely; the first magnetic guide sheet 9 and the second magnetic guide sheet 10 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 away from the shell 120, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are respectively attached and fixed to the side of the first coil 6 and the second coil 7 close to the shell 120, the first coil 6 is fixed with the first magnetic mechanism 4 through the third magnetic guide sheet 11, and the second coil 7 is fixed with the second magnetic mechanism 5 through the fourth magnetic guide sheet 12. The first magnetic guide sheet 9 and the third magnetic guide sheet 11 are used to improve the magnetic conductivity of the first coil 6, and the second magnetic guide sheet 10 and the fourth magnetic guide sheet 12 are used to improve the magnetic conductivity of the second coil 7. Optionally, the first magnetic guide sheet 9, the second magnetic guide sheet 10, the third magnetic guide sheet 11 and the fourth magnetic guide sheet 12 are all magnetic sheet structures.

[0046] The first magnetic mechanism 4 comprises a first magnetic conductive material piece 41 in a U shape, first and second magnetic steels 42 and 43 fixed to the first magnetic conductive material piece 41 respectively and arranged opposite to each other with a spacing, the first moving iron unit 82 is located at least partially between the first and second magnetic steels 42 and 43, and the first coil 6 is arranged corresponding to the first and second magnetic steels 42 and 43 respectively on the side away from the second coil 7. The second magnetic mechanism 5 comprises a second magnetic conductive material piece 51 in a U shape, third and fourth magnetic steels 52 and 53 fixed to the second magnetic conductive material piece 51 respectively and arranged opposite to each other with a spacing, the second moving iron unit 83 is located at least partially between the third and fourth magnetic steels 52 and 53, and the second coil 7 is arranged corresponding to the third and fourth magnetic steels 52 and 53 respectively on the side away from the first coil 6; the opening direction of the first magnetic conductive material piece 41 is arranged opposite to the opening direction of the second magnetic conductive material piece.

[0047] The driving force has strong nonlinearity, and the attraction of the first and second magnetic steels 42 and 43 to the first moving iron unit 82 is greater than the driving force brought by the first coil 6 when the amplitude is large. The magnetic flux is closed by adding soft magnetic material at the bottom. The soft magnetic material has elastic first and second magnetic conductive elastic sheets 13 and 14, which realize low stiffness and good magnetic conductive capacity. The ball top is composed of the first and second moving iron units 82 and 83 and a non-magnetic connecting support 15, and the non-magnetic sheet is used to connect the first and second moving iron units 82 and 83 on both sides to form the ball top. The setting of the split ball top and the double driving module realizes complete magnetic circuit and high driving efficiency.

[0048] The winding mode of the first and second coils 6 and 7 is in a flat state, the first coil 6 is arranged by adhering to the first and second magnetic steels 42 and 43 respectively, and the second coil 7 is arranged by adhering to the third and fourth magnetic steels 52 and 53 respectively.

[0049] Optionally, the first and second magnetic steels 42 and 43 on one side are arranged as upper and lower magnetic steels, which can be the same size or different size to realize nonlinear control. The third and fourth magnetic steels 53 and 53 on one side are arranged as upper and lower magnetic steels, which can be the same size or different size to realize nonlinear control.

[0050] In this embodiment, the magnetic conductive vibrating film 8 is made of soft magnetic material or a composite folded ring formed by combining a polymer film and soft magnetic material. After the first moving iron unit 82 and the second moving iron unit 83 are communicated with the first magnetic mechanism 4 and the second magnetic mechanism 5 on both sides, the magnetic attraction force on one side is greatly reduced, which can cause the BL value to decrease to a certain extent, but can improve the magnetic circuit attraction suppression capability. The folded ring 81 can also be replaced by two pieces of foam with high magnetic permeability, which is placed between the first magnetic steel 42 and the first moving iron unit 82 and between the third magnetic steel 52 and the second moving iron unit 83.

[0051] After work, the magnetic field generated by the excitation of the first coil 6 moves in the direction close to the shell 120, which causes the magnetic lines not to pass through the lower air gap of the first moving iron unit 82, resulting in a decrease in the force of the lower half of the magnetic steel on the moving iron.

[0052] Optionally, the folded ring 81 can be made of flexible magnetic conductive material.

[0053] In this embodiment, the first coil 6 is arranged in the first magnetic conductive material 41, and the second coil 7 is arranged in the second magnetic conductive material 51. The installation space of the first coil 6 and the second coil 7 is saved, so that the loudspeaker 100 can better realize the ultrathin.

[0054] Optionally, the first coil 6 is arranged in the space formed by the first magnetic conductive material 41, and the second coil 7 is arranged in the second magnetic conductive material 51, so that the magnetic conductive vibrating film 8 and the first moving iron unit 82 and the second moving iron unit 83 are arranged in an integrated structure, thereby facilitating the design of the center control area of the armature passage.

[0055] In this embodiment, the magnetization direction of the first magnetic steel 42 and the magnetization direction of the second magnetic steel 43 are the same, and the magnetization direction of the third magnetic steel 52 and the magnetization direction of the fourth magnetic steel 53 are the same. The magnetization direction of the first magnetic steel 42 is opposite to the magnetization direction of the third magnetic steel 52. Wherein, the end of the first magnetic steel 42 away from the shell 120 is S pole, the end of the first magnetic steel 42 close to the shell 120 is N pole, the end of the third magnetic steel 52 away from the shell 120 is N pole, and the end of the third magnetic steel 52 close to the shell 120 is S pole. The end of the first moving iron unit 82 arranged between the first magnetic steel 42 and the second magnetic steel 43 is N pole, and the end of the second moving iron unit 83 arranged between the third magnetic steel 52 and the fourth magnetic steel 53 is S pole.

[0056] The loudspeaker 100 further comprises two suction force compensation mechanisms 1 arranged oppositely, and the two suction force compensation mechanisms 1 are respectively fixed to two ends of the shell 120 and correspond to the first magnetic mechanism 4 and the second magnetic mechanism 5 respectively.

[0057] The suction force compensation mechanism 1 comprises a fixed piece 101 in a U shape spaced from the first magnetic mechanism, a center magnetic steel 102 fixed to the fixed piece 101, a magnetic conductive connecting piece 105 fixed to the center magnetic steel 102 close to the first magnetic mechanism, and a fifth magnetic steel 103 and a sixth magnetic steel 104 fixed to the fixed piece 101 and arranged opposite to each other; the fifth magnetic steel 103 and the sixth magnetic steel 104 are respectively located on both sides of the center magnetic steel 102, and the magnetic conductive connecting piece 105 passes through the first magnetic mechanism and is fixedly connected with the magnetic conductive diaphragm;

[0058] The magnetization direction of the center magnetic steel 102 is opposite to the magnetization direction of the fifth magnetic steel 103 and the magnetization direction of the sixth magnetic steel 104.

[0059] In the embodiment, the loudspeaker 100 further comprises a first magnetic conductor 16 and a second magnetic conductor 18, the first magnetic conductor 16 is fixed to one end of the first moving iron unit 82 close to the first magnetic mechanism 4, the second magnetic conductor 18 is fixed to one end of the second moving iron unit 83 close to the second magnetic mechanism 5, and the first magnetic conductor 16, the second magnetic conductor 18, the first moving iron unit 82 and the second moving iron unit 83 form an integrated dumbbell structure.

[0060] In the embodiment, the loudspeaker 100 further comprises a third magnetic conductor 19 and a fourth magnetic conductor 20, the third magnetic conductor 19 is perpendicular to the first moving iron unit 82, the third magnetic conductor 19 is located between the first coil and the first magnetic mechanism 4, the fourth magnetic conductor 20 is perpendicular to the second moving iron unit 83, and the fourth magnetic conductor 20 is located between the second coil and the second magnetic mechanism 5; the third magnetic conductor 19, the fourth magnetic conductor 20, the first moving iron unit 82 and the second moving iron unit 83 form an integrated cross structure.

[0061] In this embodiment, the first moving iron unit 82 and the second moving iron unit 83 are arranged in a dumbbell type or a cross type structure. The first moving iron unit 82 and the second moving iron unit 83 are both moving iron sheet structures, and the two ends of the moving iron sheet structure can be designed in a dumbbell type or a cross type. Meanwhile, the moving iron sheet structure can also have a concave-convex shape, which is not limited here. When the first moving iron unit 82 and the second moving iron unit 83 are designed in a dumbbell type, the force-electric coupling coefficient (BL value) is lower than that of a commonly used long strip shape in the amplitude (Z) -0.05 to 0.05 interval, and the BL curve at this time is higher than that of the commonly used long strip shape.

[0062] Compared with the prior art, in the loudspeaker of the present application, the first magnetic mechanism and the second magnetic mechanism are located at the two ends of the shell and are spaced apart from each other; the first moving iron unit and the second moving iron unit are respectively located on one side of the shell and are arranged in a horizontal interval; the first moving iron unit and the second moving iron unit are respectively located on one side of the shell and are arranged in a horizontal interval; the outer periphery of the folded ring is fixed to the first magnetic mechanism and the second magnetic mechanism, respectively, and the inner periphery of the folded ring is fixed to the outer periphery of the first moving iron unit and the outer periphery of the second moving iron unit, respectively; the first magnetic mechanism and the second magnetic mechanism are magnetized along the vibration direction parallel to the magnetically conductive diaphragm and jointly drive the magnetically conductive diaphragm to vibrate and produce sound; the first coil and the second coil are respectively spaced around the first moving iron unit and the second moving iron unit; the first coil and the second coil are arranged horizontally opposite to each other, and the sides of the first coil and the second coil away from each other are respectively provided with the first magnetic mechanism and the second magnetic mechanism; the sides of the first coil and the second coil close to each other are spaced apart to form a sound outlet. One group of armature drives is formed by the first moving iron unit, the first coil and the first magnetic mechanism, and another group of armature drives is formed by the second moving iron unit, the second coil and the second magnetic mechanism, so as to realize the split design of the magnetic circuit and the driving part, facilitate the magnetic flux control of the armature circuit, realize the double-end balanced driving of the first moving iron unit and the second moving iron unit, and have good driving effect, large driving force, parallel vibration, direct driving, avoidance of lever loss of driving force and better user experience effect.

[0063] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A speaker comprising a housing and a moving coil assembly secured to the housing; characterized in that, The moving iron assembly comprises: a first magnetic mechanism and a second magnetic mechanism fixed to two ends of the shell and spaced apart from each other; a magnetically conductive vibrating diaphragm comprising a ring-shaped folded ring and a first moving iron unit and a second moving iron unit located in the folded ring, the first moving iron unit and the second moving iron unit being located on one side of the shell and horizontally spaced apart; the outer periphery of the folded ring is fixed to the first magnetic mechanism and the second magnetic mechanism respectively, and the inner periphery of the folded ring is fixed to the outer periphery of the first moving iron unit and the outer periphery of the second moving iron unit respectively; the first magnetic mechanism and the second magnetic mechanism are magnetized along the vibration direction parallel to the magnetically conductive vibrating diaphragm and jointly drive the magnetically conductive vibrating diaphragm to vibrate and produce sound; and a first coil and a second coil respectively spaced around the first moving iron unit and the second moving iron unit; the first coil and the second coil are horizontally arranged opposite to each other, and the side of the first coil and the second coil away from each other is respectively arranged corresponding to the first magnetic mechanism and the second magnetic mechanism; the side of the first coil and the second coil close to each other is spaced apart to form a sound outlet.

2. The loudspeaker of claim 1, wherein, The loudspeaker further comprises a first magnetic conducting sheet and a second magnetic conducting sheet arranged opposite to each other, and a third magnetic conducting sheet and a fourth magnetic conducting sheet arranged opposite to each other; The first magnetic conducting sheet and the second magnetic conducting sheet are respectively attached and fixed to the side of the first coil and the second coil away from the shell, and the third magnetic conducting sheet and the fourth magnetic conducting sheet are respectively attached and fixed to the side of the first coil and the second coil close to the shell, and the first coil is fixed to the first magnetic mechanism through the third magnetic conducting sheet, and the second coil is fixed to the second magnetic mechanism through the fourth magnetic conducting sheet.

3. The loudspeaker of claim 2, wherein, The loudspeaker further comprises a first magnetic conducting spring, a second magnetic conducting spring, and a non-magnetic conducting connecting support, one end of the first magnetic conducting spring is fixed to the side of the third magnetic conducting sheet away from the shell, one end of the second magnetic conducting spring is fixed to the side of the fourth magnetic conducting sheet away from the shell, the other end of the first magnetic conducting spring and the other end of the second magnetic conducting spring are respectively fixed to the side of the non-magnetic conducting connecting support close to the shell, and the side of the non-magnetic conducting connecting support away from the shell is attached and fixed to the side of the first moving iron unit and the second moving iron unit close to the shell.

4. The loudspeaker of claim 1, wherein, The first magnetic mechanism comprises a first magnetic material piece in the shape of U, a first magnetic steel and a second magnetic steel fixed to the first magnetic material piece and arranged opposite to each other, the first moving iron unit is at least partially located between the first magnetic steel and the second magnetic steel, and the side of the first coil away from the second coil is arranged corresponding to the first magnetic steel and the second magnetic steel respectively; The second magnetic mechanism comprises a second magnetic conductive material piece in a U shape, a third magnetic steel and a fourth magnetic steel fixed on the second magnetic conductive material piece respectively and arranged opposite to each other, and the second moving iron unit is located at least partially between the third magnetic steel and the fourth magnetic steel, and the second coil is arranged corresponding to the third magnetic steel and the fourth magnetic steel respectively on the side away from the first coil. The opening direction of the first magnetic conductive material piece is arranged opposite to the opening direction of the second magnetic conductive material piece.

5. The loudspeaker of claim 4, wherein, The first coil is arranged in the first magnetic conductive material piece, and the second coil is arranged in the second magnetic conductive material piece.

6. The loudspeaker of claim 4, wherein, The magnetization direction of the first magnetic steel is the same as the magnetization direction of the second magnetic steel, and the magnetization direction of the third magnetic steel is the same as the magnetization direction of the fourth magnetic steel; the magnetization direction of the first magnetic steel is opposite to the magnetization direction of the third magnetic steel.

7. The loudspeaker of claim 1, wherein, The loudspeaker further comprises two suction force compensation mechanisms arranged opposite to each other, and the two suction force compensation mechanisms are fixed on the two ends of the shell respectively, and the two suction force compensation mechanisms are arranged corresponding to the first magnetic mechanism and the second magnetic mechanism respectively.

8. The loudspeaker of claim 7, wherein, The suction force compensation mechanism comprises a fixed piece in a U shape spaced apart from the first magnetic mechanism, a center magnetic steel fixed on the fixed piece, a magnetic conductive connecting piece fixed on the side of the center magnetic steel close to the first magnetic mechanism, and a fifth magnetic steel and a sixth magnetic steel fixed on the fixed piece respectively and arranged opposite to each other; the fifth magnetic steel and the sixth magnetic steel are located on the two sides of the center magnetic steel, and the magnetic conductive connecting piece passes through the first magnetic mechanism and is fixedly connected with the magnetic diaphragm. The magnetization direction of the center magnetic steel is opposite to the magnetization direction of the fifth magnetic steel and the magnetization direction of the sixth magnetic steel respectively.

9. The loudspeaker of claim 1, wherein, The loudspeaker further comprises a first magnetic conductor and a second magnetic conductor, the first magnetic conductor is fixed on the end of the first moving iron unit close to the first magnetic mechanism in a stacked manner, the second magnetic conductor is fixed on the end of the second moving iron unit close to the second magnetic mechanism in a stacked manner, and the first magnetic conductor, the second magnetic conductor, the first moving iron unit and the second moving iron unit form a dumbbell type structure.

10. The loudspeaker of claim 1, wherein, The loudspeaker further comprises a third magnetic conductor and a fourth magnetic conductor, the third magnetic conductor is perpendicular to the first moving iron unit, the third magnetic conductor is located between the first coil and the first magnetic mechanism, the fourth magnetic conductor is perpendicular to the second moving iron unit, and the fourth magnetic conductor is located between the second coil and the second magnetic mechanism; the third magnetic conductor and the first moving iron unit form a cross type structure integrally, and the fourth magnetic conductor and the second moving iron unit form a cross type structure integrally.

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