CN116887143A - Speaker module, speaker vibration compensation method and electronic equipment - Google Patents

Abstract

The application discloses a loudspeaker module, a loudspeaker vibration compensation method and electronic equipment, and belongs to the field of loudspeakers. The speaker module includes: the vibration compensation device comprises a support plate, a first magnetic component, a second magnetic component, a connecting frame, an energizing coil, a metal diaphragm and a vibration compensation component; the support plate is provided with a mounting surface, the first magnetic component and the second magnetic component are arranged on the mounting surface, the second magnetic component surrounds the first magnetic component, and a gap is reserved between the second magnetic component and the first magnetic component; the link is connected in the one end that second magnetic component deviates from the installation face, and metal diaphragm connects on the link, and metal diaphragm is relative with first magnetic component position, and the electric coil setting is in the surface of metal diaphragm towards first magnetic component, and at least partial electric coil is located the clearance, and vibration compensation subassembly is connected in metal diaphragm, and vibration compensation subassembly carries out vibration compensation motion according to the amplitude of metal diaphragm.

Description

Speaker module, speaker vibration compensation method and electronic equipment

Technical Field

The application belongs to the technical field of speaker modules, and particularly relates to a speaker module, a speaker vibration compensation method and electronic equipment.

Background

With the development of technology, electronic devices are increasingly used. Video may be captured, music played, video viewed, etc. by the electronic device. Generally, a speaker module is disposed in an electronic device, and sound is played through the speaker module. In the related art, the speaker module includes a metal diaphragm, an energizing coil is connected to the metal diaphragm, and the energizing coil is located in the magnetic assembly, and after current is introduced into the energizing coil, magnetic force generated by the energizing coil and the magnetic assembly attract each other or repel each other, so that the metal diaphragm vibrates, generates sound, and transmits the sound. However, in the related art, when the metal diaphragm vibrates, the vibration amplitude is usually too large or does not reach the preset requirement, so as to influence the broadcasting effect of the speaker module.

Disclosure of Invention

The embodiment of the application aims to provide a loudspeaker module and electronic equipment, which can solve the problem that when a metal diaphragm vibrates, the vibration amplitude is usually too large or does not reach the preset requirement, and the broadcasting effect of the loudspeaker module is affected.

In a first aspect, an embodiment of the present application provides a speaker module, including: the vibration compensation device comprises a support plate, a first magnetic component, a second magnetic component, a connecting frame, an energizing coil, a metal diaphragm and a vibration compensation component;

The support plate is provided with a mounting surface, the first magnetic component and the second magnetic component are arranged on the mounting surface, the second magnetic component surrounds the first magnetic component, and a gap is reserved between the second magnetic component and the first magnetic component;

the connecting frame is connected with one end of the second magnetic assembly, which is far away from the mounting surface, the metal diaphragm is connected to the connecting frame, the metal diaphragm is opposite to the first magnetic assembly in position, the energizing coil is arranged on the surface of the metal diaphragm, which faces the first magnetic assembly, at least part of the energizing coil is positioned in the gap, the vibration compensation assembly is connected to the metal diaphragm, and the vibration compensation assembly performs vibration compensation motion according to the amplitude of the metal diaphragm.

In a second aspect, an embodiment of the present application provides a method for compensating vibration of a speaker, which is applied to the speaker module set described in the first aspect, where the method includes:

collecting the amplitude of the metal diaphragm;

and controlling the vibration compensation component to perform vibration compensation motion based on the amplitude.

In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes a housing and the speaker module set described in the first aspect above;

The shell is provided with a sound outlet hole, the loudspeaker module is arranged in the shell, and the loudspeaker module is opposite to the sound outlet hole.

In the embodiment of the application, the second magnetic component surrounds the first magnetic component, a gap is formed between the second magnetic component and the first magnetic component, the metal diaphragm is connected to the connecting frame, the metal diaphragm is opposite to the first magnetic component, and the energizing coil is arranged on the surface of the metal diaphragm facing the first magnetic component and at least part of the energizing coil is positioned in the gap, so that once the energizing coil is energized, the energizing coil generates a magnetic field, and the magnetic field generated by the energizing coil has attractive force or repulsive force with the first magnetic component and the second magnetic component, so that the energizing coil moves, and the energizing coil drives the metal diaphragm to move, so that the metal diaphragm vibrates, and sound is generated. The vibration compensation component is connected with the metal diaphragm, so that in the process of vibration of the metal diaphragm, the vibration compensation component performs vibration compensation motion according to the amplitude of the metal diaphragm, and accordingly vibration of the metal diaphragm is compensated, and the vibration amplitude of the metal diaphragm reaches a preset requirement. That is, in the embodiment of the application, the vibration compensation component is connected to the metal diaphragm, and the vibration compensation component performs vibration compensation motion according to the amplitude of the metal diaphragm when the metal diaphragm vibrates, so as to compensate the vibration of the metal diaphragm, so that the vibration amplitude of the metal diaphragm reaches the preset requirement, and the broadcasting effect of the loudspeaker module can be improved.

Drawings

Fig. 1 shows one of schematic diagrams of a speaker module according to an embodiment of the present application;

fig. 2 shows a second schematic diagram of a speaker module according to an embodiment of the application;

FIG. 3 is a schematic diagram of a speaker module according to an embodiment of the application;

fig. 4 shows a top view of a speaker module according to an embodiment of the application;

fig. 5 shows a second top view of a speaker module according to an embodiment of the application;

fig. 6 shows a flowchart of a method for compensating vibration of a speaker according to an embodiment of the present application.

Reference numerals:

10: a support plate; 20: a first magnetic component; 211: a first magnetic conductive member; 30: a second magnetic component; 311: a second magnetic conductive member; 40: a connecting frame; 50: a power-on coil; 60: a metal diaphragm; 611: connecting the membrane; 70: a vibration compensation assembly; 71: a first induction coil; 72: a first compensation coil; 73: a second induction coil; 74: a second compensation coil; 90: a metal sheet; 100: a mounting bracket; 101: a protective sheet; 11: a protruding portion; 12: a support boss; 21: a first magnetic member; 101: a mounting surface; 201: an avoidance space; l: a gap.

Detailed Description

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, one of schematic diagrams of a speaker module according to an embodiment of the present application is shown; referring to fig. 2, a second schematic diagram of a speaker module according to an embodiment of the application is shown; referring to fig. 3, a third schematic diagram of a speaker module according to an embodiment of the application is shown; referring to fig. 4, one of top views of a speaker module according to an embodiment of the present application is shown; referring to fig. 5, a second top view of a speaker module according to an embodiment of the application is shown. As shown in fig. 1 to 5, the speaker module includes: the vibration compensation device comprises a support plate 10, a first magnetic component 20, a second magnetic component 30, a connecting frame 40, an energizing coil 50, a metal diaphragm 60 and a vibration compensation component 70.

The support plate 10 has a mounting surface 101, the first magnetic component 20 and the second magnetic component 30 are disposed on the mounting surface 101, and the second magnetic component 30 surrounds the first magnetic component 20, and a gap L is formed between the second magnetic component 30 and the first magnetic component 20. The connecting frame 40 is connected to one end of the second magnetic assembly 30, which is away from the mounting surface 101, the metal diaphragm 60 is connected to the connecting frame 40, the metal diaphragm 60 is opposite to the first magnetic assembly 20, the energizing coil 50 is disposed on the surface of the metal diaphragm 60, which faces the first magnetic assembly 20, at least part of the energizing coil 50 is located in the gap L, the vibration compensation assembly 70 is connected to the metal diaphragm 60, and the vibration compensation assembly 70 performs vibration compensation motion according to the amplitude of the metal diaphragm 60.

In the embodiment of the application, since the second magnetic component 30 surrounds the first magnetic component 20, a gap L is formed between the second magnetic component 30 and the first magnetic component 20, the metal film sheet 60 is connected to the connecting frame 40, the metal film sheet 60 is opposite to the first magnetic component 20, and the energizing coil 50 is disposed on the surface of the metal film sheet 60 facing the first magnetic component 20, and at least part of the energizing coil 50 is located in the gap L, so that when the energizing coil 50 is energized, the energizing coil 50 generates a magnetic field, and the magnetic field generated by the energizing coil 50 has an attractive force or repulsive force with the first magnetic component 20 and the second magnetic component 30, so that the energizing coil 50 moves to drive the metal film sheet 60 to vibrate, thereby generating a sound. The vibration compensation assembly 70 is connected to the metal diaphragm 60, so that during the vibration of the metal diaphragm 60, the vibration compensation assembly 70 performs vibration compensation according to the vibration amplitude of the metal diaphragm 60, thereby compensating the vibration of the metal diaphragm 60, and the vibration amplitude of the metal diaphragm 60 reaches the preset requirement. That is, in the embodiment of the present application, the vibration compensation component 70 is connected to the metal diaphragm 60, and the vibration compensation component 70 performs vibration compensation motion on the metal diaphragm 60 according to the amplitude of the metal diaphragm 60, so as to compensate the vibration of the metal diaphragm 60, so that the vibration amplitude of the metal diaphragm 60 reaches the preset requirement, and thus the broadcasting effect of the speaker module can be improved.

It should be noted that, in the embodiment of the present application, the first magnetic assembly 20 and the second magnetic assembly 30 may be magnets, and of course, the first magnetic assembly 20 and the second magnetic assembly 30 may also be electromagnets. The embodiments of the present application are not limited in this regard.

In addition, in the embodiment of the present application, the material of the energizing coil 50 may be copper, and of course, the material of the energizing coil 50 may also be other materials, for example, the material of the energizing coil 50 may also be silver. The embodiments of the present application are not limited in this regard.

Additionally, in some embodiments, the speaker module may further include a control component (not shown in the drawings) electrically connected to the metal diaphragm 60, where the control component is configured to determine an amplitude of the metal diaphragm 60 at a current time, determine a predicted amplitude of the metal diaphragm 60 at a next time according to the amplitude of the metal diaphragm 60 at the current time, and control the vibration compensation component 70 to compensate the vibration of the metal diaphragm 60 according to the preset amplitude so that the amplitude of the metal diaphragm 60 at the next time is equal to the predicted amplitude.

Since the control component is electrically connected to the metal diaphragm 60, once the metal diaphragm 60 starts vibrating, the control component can acquire the vibration amplitude of the metal diaphragm 60 at the current moment, and can determine the predicted vibration amplitude of the metal diaphragm 60 at the next moment according to the vibration amplitude at the current moment, and then the control component can control the vibration compensation component 70 to perform compensation motion according to the predicted vibration amplitude, so as to compensate the vibration of the metal diaphragm 60, so that the vibration amplitude of the metal diaphragm 60 at the next moment is equal to the predicted vibration amplitude. The control component stores a vibration model, after the control component obtains the amplitude of the current moment of the metal diaphragm 60, the control component can predict the predicted amplitude of the next moment based on the amplitude of the current moment and the vibration model, that is, the control component determines how large the amplitude of the metal diaphragm 60 should vibrate at the next moment, so as to meet the sound effect requirement, and then the control component can control the vibration compensation component 70 to perform compensation motion, so that the compensation component compensates the vibration of the metal diaphragm 60. Specifically, if the vibration amplitude of the metal diaphragm 60 at the next time is smaller than the predicted vibration amplitude, the vibration compensation module 70 increases the vibration amplitude of the metal diaphragm 60 so that the vibration amplitude of the metal diaphragm 60 at the next time is equal to the predicted vibration amplitude, and if the vibration amplitude of the metal diaphragm 60 at the next time is larger than the predicted vibration amplitude, the vibration compensation module 70 decreases the vibration amplitude of the metal diaphragm 60 so that the vibration amplitude of the metal diaphragm 60 at the next time is equal to the predicted vibration amplitude.

It should be noted that, in the embodiment of the present application, the control component may be a control chip, and of course, the control component may also be a circuit board with a control function. Embodiments of the present application are not limited herein with respect to the particular type of control assembly.

In addition, in some embodiments, as shown in fig. 1 or fig. 4, the first magnetic component 20 has an avoidance space 201, the metal sheet 90 is disposed on the mounting surface 101, and the metal sheet 90 is located in the avoidance space 201, and the metal sheet 90 is electrically connected to a control component, and the control component is used for providing current to the metal sheet 90 and the metal film 60, so that the metal sheet 90 and the metal film 60 form a capacitance, determining a capacitance value of the capacitance, and determining an amplitude of the metal film 60 based on the capacitance value of the capacitance.

Since the first magnetic element 20 has the avoiding space 201, and the metal sheet 90 on the mounting surface 101 is located in the avoiding space 201, and the first magnetic element 20 is located opposite to the metal film 60, the metal sheet 90 is located opposite to the metal film 60, so that when a current is applied to the metal sheet 90 and the metal film 60, the metal sheet 90 and the metal film 60 form a capacitor. Because the control component is electrically connected with the metal sheet 90 and the control component is electrically connected with the metal sheet 60, the control component can supply current to the metal sheet 90 and the metal sheet 60, so that the metal sheet 90 and the metal sheet 60 form a capacitor, the control component can determine the capacitance value of the capacitor, and then the control component determines the distance between the metal sheet 60 and the metal sheet 90 based on the capacitance value formula of the capacitor, so that the current amplitude of the metal sheet 60 can be determined. When the metal sheet 90 and the metal sheet 60 are not vibrated, an initial distance is provided, once the metal sheet 60 starts vibrating, i.e. when the metal sheet 60 has an amplitude, the distance between the metal sheet 60 and the metal sheet 90 will change, the control component determines the distance between the metal sheet 60 and the metal sheet 90 according to the capacitance formula, and the amplitude of the metal sheet 60 can be determined by comparing the initial distance with the initial distance.

The capacitance formula of the capacitor is as follows: c=εs/4pi kd, C represents the capacitance of the capacitor, ε represents the dielectric permittivity of the medium, S represents the facing area of the plates, k represents the electrostatic force constant, and d represents the vertical distance between the plates. When the metal sheet 90 and the metal film 60 form a capacitor, the metal sheet 90 and the metal film 60 are respectively electrode plates of the capacitor, so that after the control component determines the capacitance value of the capacitor, the distance between the metal sheet 90 and the metal film 60 can be determined, namely, after the control component determines C, d can be reversely deduced based on the capacitance value formula, so that the distance between the metal sheet 90 and the metal film 60 can be determined, and the determined distance is compared with the initial distance, so that the amplitude of the metal film 60 can be determined.

In the embodiment of the present application, the avoiding space 201 faces the metal film 60, so that after the metal sheet 90 is disposed in the avoiding space 201, the metal sheet 90 faces the metal film 60.

In addition, in some embodiments, as shown in fig. 1, the support plate 10 has a protrusion 11, and the protrusion 11 protrudes from the mounting surface 101 in the direction from the support plate 10 to the metal film sheet 60, the protrusion 11 is located in the escape space 201, and the metal sheet 90 is disposed on the protrusion 11; or, the mounting surface 101 is provided with a support boss 12, the support boss 12 is located in the avoidance space 201, and the metal sheet 90 is provided on the support boss 12.

Through setting up bulge 11, set up metal sheet 90 on bulge 11 to make the distance between metal sheet 90 and the metal diaphragm 60 nearer, thereby make metal sheet 90 and metal diaphragm 60 easily form electric capacity after the circular telegram, avoid the distance between metal sheet 90 and the metal diaphragm 60 great, lead to difficult problem that forms electric capacity to appear. That is, by providing the projection 11 and providing the metal sheet 90 on the projection 11, it is possible to facilitate the formation of capacitance between the metal sheet 90 and the metal film 60.

Through setting up support boss 12, set up sheetmetal 90 on support boss 12 to make the distance between sheetmetal 90 and the metal diaphragm 60 nearer, thereby make sheetmetal 90 and metal diaphragm 60 easily form electric capacity after the circular telegram, avoid the distance between sheetmetal 90 and the metal diaphragm 60 great, lead to difficult problem that forms electric capacity to appear. That is, by providing the support boss 12 and disposing the metal sheet 90 on the support boss 12, the metal sheet 90 and the metal film 60 can be facilitated to form a capacitance.

Additionally, in some embodiments, as shown in FIG. 1. The speaker module may further include a control assembly, the vibration compensation assembly 70 includes a first induction coil 71 and a first compensation coil 72, the first induction coil 71 and the first compensation coil 72 are electrically connected to the control assembly, and the first induction coil 71 is disposed on a surface of the metal diaphragm 60 facing the first magnetic assembly 20. The first magnetic assembly 20 is provided with an avoidance space 201, the avoidance space 201 is opposite to the first induction coil 71, the first compensation coil 72 is arranged on the mounting surface 101, the first compensation coil 72 is positioned in the avoidance space 201, and the first compensation coil 72 is opposite to the first induction coil 71 in position; the control component is configured to control the currents of the first compensation coil 72 and the first induction coil 71 based on the amplitude, so that a repulsive force or an attractive force is generated between the first compensation coil 72 and the first induction coil 71, and the first compensation coil 72 and the first induction coil 71 are far away from each other or close to each other, so as to compensate for the vibration of the metal diaphragm 60.

With this arrangement, when the metal diaphragm 60 vibrates, the control unit can determine the predicted amplitude of the metal diaphragm 60 at the next time once it has acquired the amplitude of the metal diaphragm 60, and the control unit supplies power to the first compensation coil 72 and the first induction coil 71 and controls the currents of the first compensation coil 72 and the first induction coil 71, so that the first induction coil 71 and the first compensation coil 72 generate a magnetic field, and the magnetic properties of the magnetic fields generated by the first induction coil 71 and the first compensation coil 72 may be the same or opposite. When the magnetic properties of the magnetic fields generated by the first induction coil 71 and the first compensation coil 72 are the same, a repulsive force is provided between the first compensation coil 72 and the first induction coil 71, and when the magnetic properties of the magnetic fields generated by the first induction coil 71 and the first compensation coil 72 are opposite, an attractive force is provided between the first compensation coil 72 and the first induction coil 71. When a repulsive force exists between the first compensation coil 72 and the first induction coil 71, the first compensation coil 72 and the first induction coil 71 are separated from each other, and the first compensation coil 72 is disposed on the mounting surface 101 and corresponds to the fixed position of the first compensation coil 72, so that the first induction coil 71 is separated from the first compensation coil 72, the first induction coil 71 applies a force to the metal diaphragm 60 to change the amplitude of the metal diaphragm 60, and compensates the vibration of the metal diaphragm 60 to make the amplitude of the metal diaphragm 60 equal to the preset amplitude; when the first compensation coil 72 and the first induction coil 71 have attractive force, the first compensation coil 72 and the first induction coil 71 are close to each other, and the first compensation coil 72 is disposed on the mounting surface 101 and corresponds to the fixed position of the first compensation coil 72, so that the first induction coil 71 is close to the first compensation coil 72, the first induction coil 71 applies force to the metal diaphragm 60 to change the amplitude of the metal diaphragm 60, and compensates the vibration of the metal diaphragm 60 to make the amplitude of the metal diaphragm 60 equal to the preset amplitude. That is, by providing the first induction coil 71 and the first compensation coil 72, the control component supplies power to the first induction coil 71 and the first compensation coil 72, so that the first compensation coil 72 and the first induction coil 71 are far away from each other or close to each other, and the metal diaphragm 60 is driven by the first induction coil 71 to change the amplitude, so as to compensate the vibration of the metal diaphragm 60.

For example, when the metal diaphragm 60 vibrates near the support plate 10, if the amplitude of the metal diaphragm 60 does not meet the requirement, the control component will generate an attractive force between the first induction coil 71 and the first compensation coil 72, so that the first induction coil 71 drives the metal diaphragm 60 to continue to approach the support plate 10, and the vibration of the metal diaphragm 60 is compensated, so that the amplitude of the metal diaphragm 60 will be equal to the predicted amplitude. For another example, when the metal diaphragm 60 vibrates away from the support plate 10, if the amplitude of the metal diaphragm 60 does not meet the requirement, the control component will cause a repulsive force to be generated between the first induction coil 71 and the first compensation coil 72, so that the first induction coil 71 drives the metal diaphragm 60 to keep away from the support plate 10, and compensates the vibration of the metal diaphragm 60, so that the amplitude of the metal diaphragm 60 will be equal to the predicted amplitude.

It should be noted that, in the embodiment of the present application, when the metal sheet 90 is disposed on the mounting surface 101 and the first compensation coil 72 is disposed on the mounting surface 101, the metal sheet 90 may be located in the first compensation coil 72, and of course, the metal sheet 90 may also be located on one side of the first compensation coil 72. In addition, when the support plate 10 has the protrusion 11, at this time, the metal sheet 90 is located on the protrusion 11, and the first induction coil 71 may also be located on the protrusion 11; when the support boss 12 is provided on the mounting surface 101, the metal sheet 90 is located on the support boss 12 at this time, and the first induction coil 71 may also be located on the support boss 12.

In addition, in some embodiments, a through hole is provided on the first magnetic component 20, and the through hole penetrates the first magnetic component 20 along the direction from the metal diaphragm 60 to the support plate 10, and the through hole forms the avoidance space 201. Alternatively, the first magnetic assembly 20 includes a plurality of first magnetic members 21, the plurality of first magnetic members 21 surrounds the projection of the first compensation coil 72 on the mounting surface 101, and the plurality of first magnetic members 21 are spaced apart along the circumferential direction of the projection of the first compensation coil 72 on the mounting surface 101.

By providing the through hole in the first magnetic component 20 so that the through hole forms the avoidance space 201, the first compensation coil 72 can be provided in the through hole, that is, by providing the through hole, the avoidance space 201 can be formed conveniently. The plurality of first magnetic elements 21 are distributed at intervals, so that the space where the plurality of magnetic elements encircle the first compensation coil 72 forms the avoidance space 201, and the plurality of magnetic elements can be conveniently enclosed to form the avoidance space 201 by arranging the plurality of first magnetic elements 21.

It should be noted that, when the through hole is formed in the first magnetic component 20, the first magnetic component 20 may be a complete magnetic component, and the magnetic component has a larger volume, so that the through hole can be directly formed in the magnetic component to form the avoidance space 201. When the magnetic member assembly includes a plurality of first magnetic members 21, the volume of each first magnetic member 21 may be small so as to distribute the plurality of first magnetic members 21 at intervals around the circumferential direction of the first compensation coil 72. The distance between two adjacent first magnetic members 21 may be a fixed value, that is, the plurality of first magnetic members 21 are equally spaced apart.

In addition, in some embodiments, as shown in fig. 1, the support plate 10 has a protrusion 11, and the protrusion 11 protrudes from the mounting surface 101 in the direction from the support plate 10 to the metal diaphragm 60, the protrusion 11 is located in the escape space 201, and the first compensation coil 72 is disposed on the protrusion 11. Or, the mounting surface 101 is provided with a supporting boss 12, the supporting boss 12 is located in the avoidance space 201, and the first compensation coil 72 is disposed on the supporting boss 12. By such an arrangement, the distance between the first compensation coil 72 and the first induction coil 71 can be made small, so that after the first induction coil 71 and the first compensation coil 72 are energized, the magnetic field generated by the first induction coil 71 and the magnetic field generated by the first compensation coil 72 are facilitated to repel or attract each other, and thus the first induction coil 71 is facilitated to compensate for the vibration of the metal diaphragm 60.

It should be noted that, in the embodiment of the present application, when the vibration compensating assembly 70 includes the first compensating coil 72 and the first induction coil 71, the vibration compensating assembly 70 performs the compensating motion at this time means that the first compensating coil 72 and the first induction coil 71 are far from each other or close to each other.

In addition, in some embodiments, as shown in fig. 2, the speaker module may further include a control assembly, the vibration compensating assembly 70 includes a second induction coil 73 and a second compensating coil 74, each of the second induction coil 73 and the second compensating coil 74 is electrically connected to the control assembly, the speaker module includes a mounting bracket 100, the mounting bracket 100 has an accommodating space, and the support plate 10, the first magnetic assembly 20, the second magnetic assembly 30, the connection frame 40, the power-on coil 50, the metal diaphragm 60, and the vibration compensating assembly 70 are all located in the accommodating space. The mounting bracket 100 is connected with a protection sheet 101, the protection sheet 101 is opposite to the metal film sheet 60, the second compensation coil 74 is arranged on the surface of the protection sheet 101 facing the metal film sheet 60, the second induction coil 73 is arranged on the surface of the metal film sheet 60 facing the protection sheet 101, and the second compensation coil 74 is opposite to the second induction coil 73 in position. The control component is configured to control the currents of the second compensation coil 74 and the second induction coil 73 based on the amplitude, so that a repulsive force or an attractive force is generated between the second compensation coil 74 and the second induction coil 73, and the second compensation coil 74 and the second induction coil 73 are far away from each other or close to each other, so as to compensate for the vibration of the metal diaphragm 60.

With such an arrangement, when the metal diaphragm 60 vibrates, once the control component obtains the amplitude of the metal diaphragm 60, the control component can determine the predicted amplitude of the metal diaphragm 60 at the next moment, and the control component supplies power to the second compensation coil 74 and the second induction coil 73 and controls the currents of the second compensation coil 74 and the second induction coil 73, so that the second induction coil 73 and the second compensation coil 74 generate magnetic fields, and the magnetic properties of the magnetic fields generated by the second induction coil 73 and the second compensation coil 74 may be the same or opposite. When the magnetic properties of the magnetic field generated by the second induction coil 73 and the second compensation coil 74 are the same, a repulsive force is provided between the second compensation coil 74 and the second induction coil 73, and when the magnetic properties of the magnetic field generated by the second induction coil 73 and the second compensation coil 74 are opposite, an attractive force is provided between the second compensation coil 74 and the second induction coil 73. When a repulsive force exists between the second compensation coil 74 and the second induction coil 73, the second compensation coil 74 and the second induction coil 73 are separated from each other, the second compensation coil 74 is arranged on the protection sheet 101, the protection sheet 101 is arranged on the bracket, the protection sheet 101 is fixed, and the position corresponding to the second compensation coil 74 is fixed, so that the second induction coil 73 is separated from the second compensation coil 74, the second induction coil 73 applies force to the metal diaphragm 60, so that the amplitude of the metal diaphragm 60 is changed, and the vibration of the metal diaphragm 60 is compensated, so that the amplitude of the metal diaphragm 60 is equal to a preset amplitude; when the second compensation coil 74 and the second induction coil 73 have attractive force, the second compensation coil 74 and the second induction coil 73 are close to each other, and the second compensation coil 74 is disposed on the protection sheet 101 and corresponds to the fixed position of the second compensation coil 74, so that the second induction coil 73 is close to the second compensation coil 74, the second induction coil 73 applies force to the metal diaphragm 60, so that the amplitude of the metal diaphragm 60 changes, and the vibration of the metal diaphragm 60 is compensated, so that the amplitude of the metal diaphragm 60 is equal to the preset amplitude. That is, by providing the second induction coil 73 and the second compensation coil 74, the control component supplies power to the second induction coil 73 and the second compensation coil 74, so that the second compensation coil 74 and the second induction coil 73 are far away from each other or are close to each other, and the metal diaphragm 60 is driven by the second induction coil 73 to change the amplitude, so as to compensate the vibration of the metal diaphragm 60.

For example, when the metal diaphragm 60 vibrates near the support plate 10, if the amplitude of the metal diaphragm 60 does not meet the requirement, the control component will cause a repulsive force to be generated between the second induction coil 73 and the second compensation coil 74, so that the second induction coil 73 drives the metal diaphragm 60 to continue to approach the support plate 10, and the vibration of the metal diaphragm 60 is compensated, so that the amplitude of the metal diaphragm 60 will be equal to the predicted amplitude. For another example, when the metal diaphragm 60 vibrates away from the support plate 10, if the amplitude of the metal diaphragm 60 does not meet the requirement, the control component will generate an attractive force between the second induction coil 73 and the second compensation coil 74, so that the second induction coil 73 drives the metal diaphragm 60 to keep away from the support plate 10, and the vibration of the metal diaphragm 60 is compensated, so that the amplitude of the metal diaphragm 60 will be equal to the predicted amplitude.

Additionally, in some embodiments, the protective sheet 101 may be a metal protective sheet electrically connected to a control assembly for providing current to the metal protective sheet and the metal diaphragm 60 such that the metal protective sheet and the metal diaphragm 60 form a capacitance, determining a capacitance value of the capacitance, and determining an amplitude of the metal diaphragm 60 based on the capacitance value of the capacitance.

When the protective sheet 101 is a metal protective sheet and the metal protective sheet is opposite to the metal film 60, a capacitor is formed between the metal protective sheet and the metal film 60 when a current is applied to the metal protective sheet and the metal film 60. Because the control component is electrically connected with the metal protection sheet, the control component is electrically connected with the metal diaphragm 60, and therefore, the control component can supply current to the metal protection sheet and the metal diaphragm 60, so that the metal protection sheet and the metal diaphragm 60 form a capacitor, the control component can determine the capacitance value of the capacitor, and then the control component determines the distance between the metal diaphragm 60 and the metal protection sheet based on the capacitance value formula of the capacitor, so that the current amplitude of the metal diaphragm 60 can be determined. When the metal protection sheet and the metal diaphragm 60 are not vibrated, an initial distance is provided, once the metal diaphragm 60 starts vibrating, i.e. when the metal diaphragm 60 has an amplitude, the distance between the metal diaphragm 60 and the metal protection sheet can be changed, the control component determines the distance between the metal diaphragm 60 and the metal protection sheet according to the capacitance formula, and the amplitude of the metal diaphragm 60 can be determined by comparing the initial distance with the initial distance. That is, by providing the protection sheet 101 as a metal protection sheet, it is possible to facilitate the control unit to determine the amplitude of the metal diaphragm 60, and to supply power to the second induction coil 73 and the second compensation coil 74 based on the amplitude of the metal diaphragm 60, thereby compensating for the vibration of the metal diaphragm 60.

The capacitance formula of the capacitor is as follows: c=εs/4pi kd, ε represents the dielectric permittivity of the medium, S represents the facing area of the plates, k represents the electrostatic force constant, and d represents the vertical distance between the plates. When the metal protection sheet and the metal membrane 60 form a capacitor, the metal protection sheet and the metal membrane 60 are respectively electrode plates of the capacitor, so that after the control component determines the capacitance value of the capacitor, the distance between the metal protection sheet and the metal membrane 60 can be determined, namely, after the control component determines C, d can be reversely pushed out based on the capacitance value formula, so that the distance between the metal protection sheet and the metal membrane 60 is determined, and the determined distance is compared with the initial distance, so that the amplitude of the metal membrane 60 can be determined.

In addition, in the embodiment of the present application, as shown in fig. 2, the speaker module may further include a first magnetic conductive member 211 and a second magnetic conductive member 311, where the first magnetic conductive member 211 is connected to the first magnetic component 20, the second magnetic conductive member 311 is connected to the second magnetic component 30, the first magnetic conductive member 211 may gather the magnetic field of the first magnetic component 20, and the second magnetic conductive member 311 may gather the magnetic field of the second magnetic component 30, so that the magnetic field generated after the energizing coil 50 is energized is attracted or repelled by the magnetic field of the first magnetic component 20 and the magnetic field of the second magnetic component 30. Namely, the first magnetic conductive member 211 and the second magnetic conductive member 311 are provided, so that the energizing coil 50 can drive the metal diaphragm 60 to vibrate after being energized. The second magnetic conductive member 311 may be connected to the metal diaphragm 60.

It should be noted that, in the embodiment of the present application, the first magnetic conductive member 211 and the second magnetic conductive member 311 may be magnetic conductive sheets, the first magnetic conductive member 211 covers the surface of the first magnetic component 20 facing the metal film 60, and the second magnetic conductive member 311 covers the surface of the second magnetic component 30 facing the metal film 60.

In addition, in the embodiment of the present application, as shown in fig. 2, the speaker module may further include a connection diaphragm 611, where the second magnetic conductive member 311 is connected to the metal diaphragm 60 through the connection diaphragm 611, that is, one end of the connection diaphragm 611 is connected to the second magnetic conductive member 311, and the other end of the connection diaphragm 611 is connected to the metal diaphragm 60 and is connected to the surface of the metal diaphragm 60 facing the support plate 10, so that the connection between the second magnetic conductive member 311 and the metal diaphragm 60 is facilitated. When the other end of the connection membrane 611 is connected to the metal membrane 60 and is connected to the surface of the metal membrane 60 facing the support plate 10, at this time, the energizing coil 50 may be disposed on the connection membrane 611, and the connection membrane 611 may be insulated, so that the problem that the movement of the metal membrane 60 is affected when the energizing coil 50 is energized, the electric energy in the energizing coil 50 is transferred to the metal membrane 60 is avoided.

In the embodiment of the application, since the second magnetic component 30 surrounds the first magnetic component 20, a gap L is formed between the second magnetic component 30 and the first magnetic component 20, the metal film sheet 60 is connected to the connecting frame 40, the metal film sheet 60 is opposite to the first magnetic component 20, and the energizing coil 50 is disposed on the surface of the metal film sheet 60 facing the first magnetic component 20, and at least part of the energizing coil 50 is located in the gap L, so that when the energizing coil 50 is energized, the energizing coil 50 generates a magnetic field, and the magnetic field generated by the energizing coil 50 has an attractive force or repulsive force with the first magnetic component 20 and the second magnetic component 30, so that the energizing coil 50 moves to drive the metal film sheet 60 to vibrate, thereby generating a sound. The vibration compensation assembly 70 is connected to the metal diaphragm 60, so that during the vibration of the metal diaphragm 60, the vibration compensation assembly 70 performs vibration compensation according to the vibration amplitude of the metal diaphragm 60, thereby compensating the vibration of the metal diaphragm 60, and the vibration amplitude of the metal diaphragm 60 reaches the preset requirement. That is, in the embodiment of the present application, the vibration compensation component 70 is connected to the metal diaphragm 60, and the vibration compensation component 70 performs vibration compensation motion on the metal diaphragm 60 according to the amplitude of the metal diaphragm 60, so as to compensate the vibration of the metal diaphragm 60, so that the vibration amplitude of the metal diaphragm 60 reaches the preset requirement, and thus the broadcasting effect of the speaker module can be improved.

An embodiment of the present application provides a method for compensating vibration of a speaker, which is applied to a speaker module in any one of the embodiments, as shown in fig. 6, and includes:

step 601: the amplitude of the metal diaphragm is acquired.

The loudspeaker module can comprise a control component, wherein the control component is electrically connected with the metal diaphragm, so that when the metal diaphragm vibrates, the control component can collect the amplitude of the metal diaphragm.

Step 602: based on the amplitude, the vibration compensation assembly is controlled to perform a vibration compensation motion.

After the amplitude of the metal diaphragm is obtained by the control component, the vibration compensation component can be controlled to perform vibration compensation, and the metal diaphragm is subjected to vibration compensation so as to compensate the amplitude of the metal diaphragm, so that the broadcasting effect of the loudspeaker module is improved.

In some implementations, the implementation of step 602 may be: determining the amplitude of the current moment of the metal diaphragm, and determining the predicted amplitude of the next moment of the metal diaphragm according to the amplitude of the current moment of the metal diaphragm; and controlling the vibration compensation component according to the preset amplitude to compensate the vibration of the metal diaphragm so that the amplitude of the metal diaphragm at the next moment is equal to the predicted amplitude.

The first magnetic assembly is provided with an avoidance space, a metal sheet is arranged on the mounting surface, and the metal sheet is located in the avoidance space. The implementation manner of determining the amplitude of the current moment of the metal diaphragm can be as follows: providing current to the metal sheet and the metal film so that the metal sheet and the metal film form a capacitor; and determining the capacitance value of the capacitor, and determining the amplitude of the metal diaphragm at the current moment based on the capacitance value of the capacitor.

When the metal sheet and the metal film form a capacitor, an initial distance is reserved between the metal sheet and the metal film when the metal sheet and the metal film are not vibrated, once the metal film starts vibrating, namely, when the metal film has amplitude, the distance between the metal film and the metal sheet can be changed, the control component determines the distance between the metal film and the metal sheet according to a capacitance formula, and the distance is compared with the initial distance, so that the amplitude of the metal film can be determined.

The capacitance formula of the capacitor is as follows: c=εs/4pi kd, C represents the capacitance of the capacitor, ε represents the dielectric permittivity of the medium, S represents the facing area of the plates, k represents the electrostatic force constant, and d represents the vertical distance between the plates. When the metal sheet and the metal film form a capacitor, the metal sheet and the metal film are respectively electrode plates of the capacitor, so that after the control component determines the capacitance value of the capacitor, the distance between the metal sheet and the metal film can be determined, namely, after the control component determines C, d can be reversely pushed out based on the capacitance value formula, the distance between the metal sheet and the metal film is determined, and the determined distance is compared with the initial distance, so that the amplitude of the metal film can be determined.

In addition, the vibration model is stored in the control component, after the control component acquires the amplitude of the current moment of the metal diaphragm, the predicted amplitude of the next moment can be predicted based on the amplitude of the current moment and the vibration model, namely, the control component determines how large the amplitude of the metal diaphragm should vibrate at the next moment, so that the sound effect requirement can be met, and then the control component can control the vibration compensation component to carry out compensation movement, so that the compensation component can compensate the vibration of the metal diaphragm. Specifically, if the vibration amplitude of the metal diaphragm at the next time is smaller than the predicted vibration amplitude, the vibration compensation component increases the vibration amplitude of the metal diaphragm so that the vibration amplitude of the metal diaphragm at the next time is equal to the predicted vibration amplitude, and if the vibration amplitude of the metal diaphragm at the next time is greater than the predicted vibration amplitude, the vibration compensation component decreases the vibration amplitude of the metal diaphragm so that the vibration amplitude of the metal diaphragm at the next time is equal to the predicted vibration amplitude.

The embodiment of the application provides electronic equipment, which comprises a shell and a loudspeaker module in any one of the above embodiments. The shell is provided with a sound outlet hole, the loudspeaker module is arranged in the shell, and the loudspeaker module is opposite to the sound outlet hole.

It should be noted that, in the embodiment of the present application, the electronic device includes, but is not limited to, a controller, an intelligent device, a terminal product, and the like, where the intelligent device is, for example, a smart phone, a smart television, a smart speaker, a smart robot, a VR device, an AR device, an XR device, and the like, and the terminal product includes products such as a personal computer, a tablet computer, and the like.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A speaker module, the speaker module comprising: the vibration compensation device comprises a support plate, a first magnetic component, a second magnetic component, a connecting frame, an energizing coil, a metal diaphragm and a vibration compensation component;

the support plate is provided with a mounting surface, the first magnetic component and the second magnetic component are arranged on the mounting surface, the second magnetic component surrounds the first magnetic component, and a gap is reserved between the second magnetic component and the first magnetic component;

the connecting frame is connected with one end of the second magnetic assembly, which is far away from the mounting surface, the metal diaphragm is connected to the connecting frame, the metal diaphragm is opposite to the first magnetic assembly in position, the energizing coil is arranged on the surface of the metal diaphragm, which faces the first magnetic assembly, at least part of the energizing coil is positioned in the gap, the vibration compensation assembly is connected to the metal diaphragm, and the vibration compensation assembly performs vibration compensation motion according to the amplitude of the metal diaphragm.

2. The loudspeaker module of claim 1, further comprising a control assembly electrically connected to the metal diaphragm, the control assembly configured to determine an amplitude of the metal diaphragm at a current time, determine a predicted amplitude of the metal diaphragm at a next time based on the amplitude of the metal diaphragm at the current time, and control the vibration compensation assembly to compensate for vibration of the metal diaphragm based on the preset amplitude so that the amplitude of the metal diaphragm at the next time is equal to the predicted amplitude.

3. The speaker module of claim 2, wherein the first magnetic component has an avoidance space, a metal sheet is disposed on the mounting surface, the metal sheet is located in the avoidance space, the metal sheet is electrically connected to the control component, the control component is configured to provide current to the metal sheet and the metal diaphragm, so that the metal sheet and the metal diaphragm form a capacitance, a capacitance value of the capacitance is determined, and an amplitude of the metal diaphragm is determined based on the capacitance value of the capacitance.

4. A speaker module according to claim 3, wherein the support plate has a projection projecting from the mounting surface in a direction from the support plate to the metal diaphragm, the projection being located in the escape space, the metal sheet being provided on the projection;

Or, a supporting boss is arranged on the mounting surface, the supporting boss is positioned in the avoidance space, and the metal sheet is arranged on the supporting boss.

5. The speaker module of claim 1, further comprising a control assembly, wherein the vibration compensation assembly comprises a first induction coil and a first compensation coil, wherein the first induction coil and the first compensation coil are both electrically connected with the control assembly, and wherein the first induction coil is disposed on a surface of the metal diaphragm facing the first magnetic assembly;

the first magnetic assembly is provided with an avoidance space, the avoidance space is opposite to the first induction coil, the first compensation coil is arranged on the mounting surface and is positioned in the avoidance space, and the first compensation coil is opposite to the first induction coil in position;

the control component is used for controlling the current of the first compensation coil and the first induction coil based on the amplitude so as to enable the first compensation coil and the first induction coil to generate repulsive force or attractive force, and enable the first compensation coil and the first induction coil to be far away from each other or close to each other so as to compensate the vibration of the metal diaphragm.

6. The speaker module of claim 5, wherein a through hole is provided in the first magnetic component, the through hole penetrates through the first magnetic component along a direction from the metal diaphragm to the support plate, and the through hole forms the avoidance space;

or, the first magnetic component comprises a plurality of first magnetic pieces, the plurality of first magnetic pieces encircle the projection of the first compensation coil on the mounting surface, and the plurality of first magnetic pieces are distributed at intervals along the circumferential direction of the projection of the first compensation coil on the mounting surface.

7. The speaker module as claimed in claim 5, wherein the support plate has a protrusion protruding from the mounting surface in a direction from the support plate to the metal diaphragm, the protrusion being located in the escape space, the first compensation coil being disposed on the protrusion;

or, a supporting boss is arranged on the mounting surface, the supporting boss is located in the avoidance space, and the first compensation coil is arranged on the supporting boss.

8. The speaker module of claim 1, further comprising a control assembly, the vibration compensation assembly comprising a second inductive coil and a second compensation coil, the second inductive coil and the second compensation coil each being electrically connected to the control assembly, the speaker module comprising a mounting bracket having an accommodation space in which the support plate, the first magnetic assembly, the second magnetic assembly, the connection frame, the energizing coil, the metal diaphragm, and the vibration compensation assembly are located;

The mounting bracket is connected with a protection sheet, the protection sheet is opposite to the metal diaphragm, the second compensation coil is arranged on the surface of the protection sheet facing the metal diaphragm, the second induction coil is arranged on the surface of the metal diaphragm facing the protection sheet, and the second compensation coil is opposite to the second induction coil in position;

the control component is used for controlling the current of the second compensation coil and the second induction coil based on the amplitude so as to enable the second compensation coil and the second induction coil to generate repulsive force or attractive force, and enable the second compensation coil and the second induction coil to be far away from each other or close to each other so as to compensate the vibration of the metal diaphragm.

9. The speaker module of claim 8, wherein the protective sheet is a metal protective sheet electrically connected to the control assembly, the control assembly is configured to provide current to the metal protective sheet and the metal diaphragm to cause the metal protective sheet and the metal diaphragm to form a capacitance, determine a capacitance value of the capacitance, and determine an amplitude of the metal diaphragm based on the capacitance value of the capacitance.

10. A method of compensating for loudspeaker vibrations, applied in a loudspeaker module according to any of claims 1-9, the method comprising:

collecting the amplitude of the metal diaphragm;

and controlling the vibration compensation component to perform vibration compensation motion based on the amplitude.

11. The speaker vibration-compensating method of claim 10, wherein controlling the vibration-compensating assembly to perform a vibration-compensating motion based on the amplitude comprises:

determining the amplitude of the current moment of the metal diaphragm, and determining the predicted amplitude of the next moment of the metal diaphragm according to the amplitude of the current moment of the metal diaphragm;

and controlling the vibration compensation component to compensate the vibration of the metal diaphragm according to the preset amplitude so that the amplitude of the metal diaphragm at the next moment is equal to the predicted amplitude.

12. The speaker vibration compensating method of claim 11, wherein the first magnetic component has an avoidance space, a metal sheet is disposed on the mounting surface, and the metal sheet is located in the avoidance space, and the determining the amplitude of the metal film at the current time comprises:

Providing current to the metal sheet and the metal film sheet so that the metal sheet and the metal film sheet form a capacitor;

and determining the capacitance value of the capacitor, and determining the amplitude of the metal diaphragm at the current moment based on the capacitance value of the capacitor.

13. An electronic device comprising a housing and the speaker module of any one of claims 1-9;

the shell is provided with a sound outlet hole, the loudspeaker module is arranged in the shell, and the loudspeaker module is opposite to the sound outlet hole.