Loudspeaker and electrical appliance

Abstract

The application provides a loudspeaker and an electrical appliance. The loudspeaker comprises a first magnetic assembly, a plurality of second magnetic assemblies surrounding the periphery of the first magnetic assembly, any second magnetic assembly having a spacing with the first magnetic assembly, a coil surrounding the periphery of the first magnetic assembly, the coil being at least partially located between the first magnetic assembly and the second magnetic assembly, a vibration assembly attached to the coil, the coil pushing the vibration assembly to vibrate to emit sound waves, at least two detection assemblies arranged on the side of the first magnetic assembly facing the vibration assembly, any detection assembly being used to receive a detection wave, when a first difference is greater than or equal to a first threshold value, it is identified that the vibration assembly is not in a balanced position, the first difference being the difference between the detection waves received by any two detection assemblies of the at least two detection assemblies, and an adjusting device electrically connected with any detection assembly, the adjusting device being used to adjust the position of the vibration assembly so as to restore the vibration assembly to the balanced position.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic equipment, in particular to a loudspeaker and an electrical appliance. BACKGROUND

[0002] In the related art, a loudspeaker device drives air vibration through cover plate vibration to play a loudspeaker role. Due to different sound pressures in the space where the loudspeaker device is located, the diaphragm is prone to uneven stress and polarization, and thus sound distortion occurs. SUMMARY

[0003] The present application aims to provide a loudspeaker and an electrical appliance, which can solve the technical problem of diaphragm polarization in the related art.

[0004] To solve the above technical problems, the present application is implemented as follows:

[0005] The first aspect of the present application provides a loudspeaker, comprising:

[0006] a first magnetic component;

[0007] a plurality of second magnetic components surrounding the periphery of the first magnetic component, and each second magnetic component has a spacing with the first magnetic component;

[0008] a coil surrounding the periphery of the first magnetic component, and the coil is at least partially located between the first magnetic component and the second magnetic component;

[0009] a vibration component attached to the coil, and the coil drives the vibration component to vibrate to emit sound waves under the action of the first magnetic component and the second magnetic component;

[0010] at least two detection components arranged on the side of the first magnetic component facing the vibration component, and each detection component is used for receiving a detection wave, and when a first difference is greater than or equal to a first threshold, it is identified that the vibration component is not in a balanced position, wherein the first difference is the difference between the detection waves received by any two of the at least two detection components;

[0011] an adjusting device electrically connected with any detection component, and the adjusting device adjusts the position of the vibration component to restore the vibration component to the balanced position when the vibration component is not in the balanced position.

[0012] The second aspect of the present application provides an electrical appliance, which comprises the loudspeaker provided in the first aspect of the present application; a power supply electrically connected with the loudspeaker, and the power supply is used for supplying power to the loudspeaker, and the power supply is used for being connected with a power source.

[0013] The present application provides a detection component and an adjustment device in a loudspeaker, so that when the vibration component deviates from the equilibrium position, the adjustment device can adjust the position of the vibration component according to the detection result of the detection component, so that the vibration component can be restored to the equilibrium position, thereby avoiding polarization of the vibration component and solving the problem of sound distortion in the loudspeaker. Additional aspects and advantages of the present application will be partially given in the following description and partially become apparent from the following description or learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 One of the structural schematic diagrams of a speaker provided by one embodiment of the present application is shown;

[0016] Figure 2 One of the structural schematic diagrams of a loudspeaker provided by one embodiment of the present application is shown, in which the vibration component is located in a balanced position;

[0017] Figure 3 FIG1 shows one of the schematic diagrams of the arrangement of multiple detection components provided by one embodiment of the present application;

[0018] Figure 4 One of the structural schematic diagrams of a loudspeaker with a vibration component deviating from a balanced position provided by one embodiment of the present application is shown;

[0019] Figure 5 The second structural diagram of the speaker provided by one embodiment of the present application is shown;

[0020] Figure 6 The second schematic diagram shows the arrangement of multiple detection components provided by one embodiment of the present application;

[0021] Figure 7 A second structural schematic diagram of a loudspeaker with a vibration component located in a balanced position according to an embodiment of the present application is shown;

[0022] Figure 8 A schematic diagram showing the arrangement of multiple adjustment pieces provided in one embodiment of the present application is shown;

[0023] Figure 9 A second structural schematic diagram of a loudspeaker with a vibration component deviating from a balanced position provided by an embodiment of the present application is shown;

[0024] Figure 10 A waveform diagram of detection waves received by multiple receiving parts when a vibration assembly provided by one embodiment of the present application is located at a balanced position is shown;

[0025] Figure 11A waveform diagram of detection waves received by multiple receiving portions when the vibration assembly deviates from the equilibrium position is shown.

[0026] Figure 12 A top view of the loudspeaker is shown.

[0027] Figures 1 to 9 And Figure 12 the reference signs in the drawings:

[0028] 100 loudspeaker, 111 first magnetic assembly, 1111 first magnetic piece, 1112 first magnetic conducting piece, 112 second magnetic assembly, 1121 second magnetic piece, 1122 second magnetic conducting piece, 120 coil, 130 vibration assembly, 131 cover plate, 132 diaphragm, 133 support, 140 detection assembly, 141 emitting portion, 142 receiving portion, 140a first ultrasonic wave emitting-receiver, 141a first emitting portion, 142a first receiving portion, 140b second ultrasonic wave emitting-receiver, 141b second emitting portion, 142b second receiving portion, 140c third ultrasonic wave emitting-receiver, 141c third emitting portion, 142c third receiving portion, 140d fourth ultrasonic wave emitting-receiver, 141d fourth emitting portion, 142d fourth receiving portion, 150 adjusting device, 151 adjusting sheet, 151a first polarization controller, 151b second polarization controller, 151c third polarization controller, 151d fourth polarization controller, 210 main body, 220 loudspeaker port. DETAILED DESCRIPTION

[0029] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0031] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "upper", "inner" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it needs to be understood that the terms "mounting", "connecting", "connecting" should be understood broadly unless otherwise explicitly specified and limited, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The following will be described in detail Figures 1 to 12 The loudspeaker 100 and the electrical appliance according to the embodiments of the present application are described.

[0034] As Figure 1 , Figure 3 , Figure 5 and Figure 12 The present application provides a loudspeaker 100, comprising: a first magnetic assembly 111; a plurality of second magnetic assemblies 112, surrounding the periphery of the first magnetic assembly 111, and any second magnetic assembly 112 has a spacing with the first magnetic assembly 111; a coil 120, surrounding the periphery of the first magnetic assembly 111, and the coil 120 is at least partially located between the first magnetic assembly 111 and the second magnetic assembly 112; a vibration assembly 130, attached to the coil 120, and the coil 120 pushes the vibration assembly 130 to vibrate under the action of the first magnetic assembly 111 and the second magnetic assembly 112 to emit sound waves; at least two detection assemblies 140, provided on the side of the first magnetic assembly 111 facing the vibration assembly 130, any detection assembly 140 is used for receiving a detection wave, and when the first difference is greater than or equal to the first threshold, it is identified that the vibration assembly 130 is not in the equilibrium position, wherein the first difference is the difference between the detection waves received by any two of the at least two detection assemblies 140; an adjusting device 150, electrically connected with any detection assembly 140, and in the case that the vibration assembly 130 is not in the equilibrium position, the adjusting device 150 adjusts the position of the vibration assembly 130 to make the vibration assembly 130 return to the equilibrium position.

[0035] In the embodiment of the present application, the loudspeaker 100 comprises a first magnetic assembly 111, a second magnetic assembly 112, a coil 120 and a vibration assembly 130. The first magnetic assembly 111 and the second magnetic assembly 112 can form a magnetic field therebetween. The second magnetic assembly 112 is in a plurality. The plurality of second magnetic assemblies 112 surround the periphery of the first magnetic assembly 111. Any second magnetic assembly 112 has a spacing with the first magnetic assembly 111. There is a magnetic field between any second magnetic assembly 112 and the first magnetic assembly 111. The coil 120 surrounds the periphery of the first magnetic assembly 111. The coil 120 is at least partially located between the first magnetic assembly 111 and the second magnetic assembly 112. When the coil 120 is energized, the coil 120 is subjected to a magnetic field force in the magnetic field formed by the first magnetic assembly 111 and the second magnetic assembly 112. The coil 120 vibrates under the action of the magnetic field force. The vibration assembly 130 is attached to the coil 120. When the coil 120 vibrates under the action of the magnetic field force, the coil 120 pushes the vibration assembly 130 to vibrate. The vibration assembly 130 in turn pushes the air to vibrate to emit sound waves.

[0036] Understandably, the position of the vibration assembly 130 will affect the sound waves generated by the vibration assembly 130 pushing the air to vibrate. When the vibration assembly 130 is not in the equilibrium position, the vibration assembly 130 will appear to be polarized, which in turn will cause the sound waves emitted by the vibration assembly 130 pushing the air to be distorted, affecting the loudspeaker effect of the loudspeaker 100. In order to avoid the vibration assembly 130 deviating from the equilibrium position, the present application provides a detection assembly 140 for detecting the position of the vibration assembly 130 in the loudspeaker 100, and an adjusting device 150 for adjusting the position of the vibration assembly 130.

[0037] Further, the number of detection assemblies 140 is at least two. The at least two detection assemblies 140 are arranged on the side of the first magnetic assembly 111 facing the vibration assembly 130. Any detection assembly 140 is used to receive a detection wave. The detection wave can be an ultrasonic wave. The difference between the detection waves received by the at least two detection assemblies 140 is used to determine whether the vibration assembly 130 is in the equilibrium position. Understandably, the vibration assembly 130 reflects the detection wave. The at least two detection assemblies 140 receive the detection wave reflected by the vibration assembly 130. When the position of the vibration assembly 130 changes, the difference between the detection waves received by any two detection assemblies 140 of the at least two detection assemblies 140 will change. Therefore, the difference between the detection waves received by any two detection assemblies 140 of the at least two detection assemblies 140 can be used to determine whether the vibration assembly 130 is in the equilibrium position. Figure 2 As shown in the figure, the vibration assembly 130 is in the equilibrium position. The figure shows a schematic diagram of the reflection of the detection wave by the vibration assembly 130. The arrow direction in the figure is the propagation direction of the detection wave. Figure 4As shown, the detection wave is reflected by the vibrating assembly 130 when the vibrating assembly 130 is not in the balanced position, and the arrow direction is the propagation direction of the detection wave. Specifically, the difference between the detection waves received by any two of the at least two detection assemblies 140 is a first difference. When the first difference is greater than or equal to a first threshold, it is identified that the vibrating assembly 130 is not in the balanced position. When the first difference is less than the first threshold, it is identified that the vibrating assembly 130 is in the balanced position.

[0038] Further, the adjusting device 150 is electrically connected with any of the detection assemblies 140, and the adjusting device 150 receives the detection result of the detection assembly 140 to adjust the position of the vibrating assembly 130. Specifically, when the vibrating assembly 130 is not in the balanced position, the difference between the detection waves received by any two of the at least two detection assemblies 140 is greater than or equal to the first threshold, the adjusting device 150 receives the detection result of the detection assembly 140, and adjusts the position of the vibrating assembly 130 according to the detection result, so as to make the vibrating assembly 130 return to the balanced position.

[0039] By arranging the detection assemblies 140 and the adjusting device 150 in the loudspeaker 100, when the vibrating assembly 130 deviates from the balanced position, the adjusting device 150 can adjust the position of the vibrating assembly 130 according to the detection result of the detection assembly 140, so as to make the vibrating assembly 130 return to the balanced position, avoid the vibrating assembly 130 from vibrating, and solve the problem of sound distortion of the loudspeaker 100.

[0040] As a possible implementation, as shown in FIG. 1, the loudspeaker 100 includes a vibrating assembly 130 and at least two detection assemblies 140. Figure 7 As shown, any of the detection assemblies 140 includes a transmitting part 141 and a receiving part 142, wherein the transmitting part 141 is configured to transmit a detection wave, and the receiving part 142 is configured to receive the detection wave.

[0041] Specifically, any of the detection assemblies 140 includes the transmitting part 141 and the receiving part 142, wherein the transmitting part 141 is configured to transmit a detection wave, and the receiving part 142 is configured to receive the detection wave. After the detection assembly 140 transmits the detection wave, the vibrating assembly 130 reflects the detection wave, and the receiving part 142 receives the detection wave reflected by the vibrating assembly 130, so that the detection assembly 140 can detect the position of the vibrating assembly 130 according to the detection wave.

[0042] Further, the transmitting part 141 of any detection component 140 is arranged adjacent to the receiving part 142. Understandably, the receiving part 142 of any detection component 140 can receive the detection waves reflected by the vibration component 130, and the intensity of the detection waves is related to the propagation distance, the shorter the propagation distance of the detection waves, the stronger the intensity of the detection waves received by the receiving part 142. By arranging the transmitting part 141 adjacent to the receiving part 142 in the same detection component 140, the intensity of the detection waves generated by the corresponding transmitting part 141 received by the receiving part 142 of any detection component 140 is stronger than the intensity of the detection waves generated by the transmitting part 141 in other detection components 140, so as to facilitate each detection component 140 to compare the received detection waves and improve the detection accuracy of the detection component 140.

[0043] As a possible implementation, the detection components 140 are symmetrically arranged on the first magnetic component 111, or uniformly arranged on the first magnetic component 111, or spaced apart from each other on the first magnetic component 111.

[0044] Specifically, the detection components 140 can be arranged on the first magnetic component 111 in various arrangement modes. In a possible implementation, the detection components 140 are symmetrically arranged on the first magnetic component 111. The surface of the first magnetic component 111 is an axisymmetric figure, and the detection components 140 are symmetrically arranged with respect to the axis of symmetry of the first magnetic component 111.

[0045] In another possible implementation, the detection components 140 are uniformly arranged on the first magnetic component 111. Along one or more directions of the surface of the first magnetic component 111, the detection components 140 are uniformly arranged along one or more directions of the surface of the first magnetic component 111, and the distance between any two adjacent detection components 140 in the same direction is the same.

[0046] In another possible implementation, the detection components 140 are spaced apart from each other on the first magnetic component 111, and any two adjacent detection components 140 have a spacing therebetween.

[0047] By arranging the detection components 140 on the first magnetic component 111 in the above arrangement modes, the detection waves emitted by each detection component 140 can be more evenly propagated to the vibration component 130, and the detection accuracy of the detection components 140 on the position of the vibration component 130 is improved.

[0048] As a possible implementation, the emitting part 141 of any one of the at least two detection components 140 is configured to emit detection waves of a first frequency, the emitting part 141 of another one of the at least two detection components 140 is configured to emit detection waves of a second frequency, the first frequency and the second frequency are not equal; the receiving part 142 of the detection component 140 emitting detection waves of the first frequency is configured to receive detection waves of the first frequency, and the receiving part 142 of the detection component 140 emitting detection waves of the second frequency is configured to receive detection waves of the second frequency.

[0049] Specifically, the detection components 140 are capable of emitting and receiving detection waves of different frequencies. Specifically, the emitting part 141 of any one of the at least two detection components 140 is configured to emit detection waves of a first frequency, the emitting part 141 of another one of the at least two detection components 140 is configured to emit detection waves of a second frequency, the first frequency and the second frequency are not equal; the receiving part 142 of the detection component 140 emitting detection waves of the first frequency is configured to receive detection waves of the first frequency, and the receiving part 142 of the detection component 140 emitting detection waves of the second frequency is configured to receive detection waves of the second frequency. Understandably, since the detection waves of the first frequency and the detection waves of the second frequency are of different frequencies, when the detection components 140 receive the detection waves of the first frequency and the detection waves of the second frequency respectively, the received detection waves can be easily distinguished to avoid mutual interference of the two detection waves received by the same detection component 140.

[0050] By causing the detection components 140 to emit and receive detection waves of different frequencies, mutual interference of the two detection waves received by the same detection component 140 can be avoided, and the detection accuracy of the detection components 140 can be improved.

[0051] As a possible implementation, when the vibration component 130 is not in the balanced position, the adjusting device 150 adjusts the position of the vibration component 130 according to the first difference and the first threshold value.

[0052] Specifically, when the vibration component 130 is not in the balanced position, the difference (i.e. the first difference) between the detection waves received by any two of the at least two detection components 140 is greater than or equal to the first threshold value, and the adjusting device 150 adjusts the elasticity of each position of the diaphragm 132 according to the first difference and the first threshold value, thereby adjusting the stress of each position of the vibration component 130 to adjust the position of the vibration component 130. The adjusting device 150 can adjust the position of the vibration component 130 in various ways according to the first difference and the first threshold value. In a possible implementation, the adjusting device 150 can adjust the position of the vibration component 130 according to the difference between the first difference and the first threshold value.

[0053] By adjusting the position of the vibration assembly 130 according to the first difference and the first threshold by the adjusting device 150, the elasticity of the diaphragm 132 can be changed according to the first difference and the first threshold under the action of the adjusting device 150, and the adjustment accuracy of the adjusting device 150 is improved.

[0054] As a possible implementation, as shown in Figure 1 、 Figure 2 、 Figure 4 and Figure 7 , the vibration assembly 130 includes a cover plate 131 and a diaphragm 132, the diaphragm 132 is partially located between the coil 120 and the cover plate 131, the diaphragm 132 has elasticity, and the coil 120 pushes the cover plate 131 to vibrate through the diaphragm 132; wherein the adjusting device 150 is installed on the surface of the diaphragm 132 or inside the diaphragm 132, and in the case that the vibration assembly 130 is not in the equilibrium position, the adjusting device 150 adjusts the elasticity of the diaphragm 132 to make the vibration assembly 130 return to the equilibrium position.

[0055] Specifically, the vibration assembly 130 includes a cover plate 131 and a diaphragm 132, the diaphragm 132 is partially located between the coil 120 and the cover plate 131, the coil 120 pushes the diaphragm 132 to vibrate, the diaphragm 132 transmits the vibration to the cover plate 131, and then the diaphragm 132 and the cover plate 131 vibrate together with the coil 120. The diaphragm 132 has elasticity, and when the coil 120 pushes the diaphragm 132 to vibrate, the vibration assembly 130 vibrates under the push of the diaphragm 132 with elasticity, which can further improve the vibration amplitude of the vibration assembly 130 and improve the loudspeaking effect of the loudspeaker 100.

[0056] Understandably, the elasticity of the diaphragm 132 will affect the thrust exerted by the diaphragm 132 on the vibration assembly 130, and by adjusting the elasticity of the diaphragm 132 (i.e., adjusting the stiffness coefficient of the diaphragm 132), the position of the vibration assembly 130 can be adjusted by the diaphragm 132. Specifically, in the case that the vibration assembly 130 is not in the equilibrium position, the adjusting device 150 adjusts the elasticity of the diaphragm 132 (i.e., adjusts the stiffness coefficient of the diaphragm 132) according to the detection result of the detection assembly 140, so that the vibration assembly 130 returns to the equilibrium position.

[0057] As a possible implementation, the side of the cover plate 131 facing the first magnetic assembly 111 is at least partially exposed to the diaphragm 132.

[0058] Specifically, the cover plate 131 is at least partially exposed to the diaphragm 132 from one side of the first magnetic assembly 111. The cover plate 131 has a better reflection effect on the detection wave than the diaphragm 132. By exposing at least part of the cover plate 131 to the diaphragm 132, the detection wave can be reflected by the cover plate 131, the loss of the detection wave during propagation is reduced, and the accuracy of the detection by the detection assembly 140 is improved.

[0059] As a possible implementation, as shown in Figure 5 and Figure 9 The adjusting device 150 includes a plurality of adjusting pieces 151 installed on the surface of the diaphragm 132 or inside the diaphragm 132. The loudspeaker 100 further includes a processor electrically connected to the plurality of adjusting pieces 151 and the detection assembly 140. The processor generates an electrical signal corresponding to the first difference and the first threshold. At least some of the plurality of adjusting pieces 151 generate a corresponding deformation according to the electrical signal to adjust the elasticity of the diaphragm 132.

[0060] Specifically, the adjusting device 150 includes a plurality of adjusting pieces 151 installed on the surface of the diaphragm 132 or inside the diaphragm 132. The adjusting pieces 151 are used to adjust the elasticity of the diaphragm 132. Specifically, the plurality of adjusting pieces 151 are uniformly arranged on the diaphragm 132. The plurality of adjusting pieces 151 can respectively adjust the elasticity of each position of the diaphragm 132, i.e., the plurality of adjusting pieces 151 can respectively adjust the elasticity of each position of the diaphragm 132 to a proper elasticity according to the detection result of the detection assembly 140. The elasticity of each position of the diaphragm 132 where the adjusting pieces 151 are installed can be different or the same. In this way, each position of the vibration assembly 130 can respectively receive a proper thrust from the diaphragm 132, and the vibration assembly 130 can be restored to the equilibrium position.

[0061] The diaphragm 132 can be a multi-layer structure, and the adjusting pieces 151 are located between the layers of the diaphragm 132, i.e., the adjusting pieces 151 are located inside the diaphragm 132. The diaphragm 132 can also be a single-layer structure, and the adjusting pieces 151 are attached to the surface of the diaphragm 132.

[0062] Further, the loudspeaker 100 further includes a processor electrically connected to the plurality of adjusting pieces 151 and the detection assembly 140, so that the adjusting pieces 151 can obtain the detection result of the detection assembly 140 through the processor, and then the adjusting pieces 151 adjust the elasticity of the diaphragm 132 according to the detection result of the detection assembly 140. Specifically, the processor generates an electrical signal corresponding to the first difference and the first threshold. The electrical signal can be a voltage signal or a current signal. At least some of the plurality of adjusting pieces 151 generate a corresponding deformation according to the electrical signal to adjust the elasticity of the diaphragm 132.

[0063] By setting the processor in the loudspeaker 100, the detection result of the detection assembly 140 can be converted into an electric signal by the processor, and then the diaphragm 151 is controlled by the electric signal to adjust the elasticity of each position of the diaphragm 132, so as to restore the vibration assembly 130 to the position.

[0064] As a possible implementation, as shown in Figure 1 , Figure 2 , Figure 4 and Figure 7 , the first magnetic assembly 111 includes: a first magnetic piece 1111 having magnetism; and a first magnetic guide piece 1112 arranged on a side of the first magnetic piece 1111 facing the vibration assembly 130, the first magnetic guide piece 1112 being used for magnetic concentration.

[0065] Specifically, the first magnetic assembly 111 includes the first magnetic piece 1111 having magnetism and the first magnetic guide piece 1112 arranged on a side of the first magnetic piece 1111 facing the vibration assembly 130, the first magnetic guide piece 1112 being used for magnetic concentration, so that the magnetism of the first magnetic piece 1111 is concentrated on the side of the first magnetic piece 1111 facing the vibration assembly 130. Understandably, the coil 120 is close to the side of the first magnetic piece 1111 facing the vibration assembly 130, by arranging the first magnetic guide piece 1112 on the side of the first magnetic piece 1111 facing the vibration assembly 130, the magnetic field strength near the coil 120 can be improved, and then the magnetic field force on the coil 120 is increased, so as to improve the vibration strength of the coil 120 and the loudspeaker effect of the loudspeaker 100.

[0066] As a possible implementation, as shown in Figure 1 , Figure 2 , Figure 4 and Figure 7 , the second magnetic assembly 112 includes: a second magnetic piece 1121 having magnetism; and a second magnetic guide piece 1122 arranged on a side of the second magnetic piece 1121 facing the vibration assembly 130, the second magnetic guide piece 1122 being used for magnetic concentration.

[0067] Specifically, any second magnetic assembly 112 includes a second magnetic piece 1121 and a second magnetic conducting piece 1122, the second magnetic piece 1121 has magnetism, the second magnetic conducting piece 1122 is arranged on a side of the second magnetic piece 1121 facing the vibration assembly 130, and the second magnetic conducting piece 1122 is used for concentrating magnetism, so that the magnetism of the second magnetic piece 1121 is concentrated on the side of the second magnetic piece 1121 facing the vibration assembly 130. Understandably, the coil 120 is close to the side of the second magnetic piece 1121 facing the vibration assembly 130, by arranging the second magnetic conducting piece 1122 on the side of the second magnetic piece 1121 facing the vibration assembly 130, the magnetic field strength near the coil 120 can be improved, and then the magnetic field force borne by the coil 120 is increased, so as to improve the vibration strength of the coil 120 and improve the loudspeaker effect of the loudspeaker 100.

[0068] Further, the loudspeaker 100 further includes a support 133 arranged between the second magnetic assembly 112 and the vibration assembly 130, and the support 133 is used for supporting the vibration assembly 130.

[0069] The embodiment of the present application also provides an electric appliance device, which includes the loudspeaker 100 provided by the first aspect of the present application; a power supply electrically connected with the loudspeaker 100, and the power supply is used for supplying power for the loudspeaker 100, and the power supply is used for being connected with a power source.

[0070] Specifically, the electric appliance device includes the loudspeaker 100 and the power supply, the power supply is electrically connected with the loudspeaker 100, and the power supply can supply power for the loudspeaker 100, so that the loudspeaker 100 can normally operate. The power supply can independently supply power for the loudspeaker 100, in which case the power supply can be a battery. The power supply can also be connected with the power source, so as to supply power for the loudspeaker 100 through the power source.

[0071] Among them, the electric appliance device can be a mobile phone, a tablet computer or a notebook computer.

[0072] As shown in Figure 1 and Figure 5 As a possible implementation, the electric appliance device further includes a main body 210, the loudspeaker 100 is installed on the main body 210, and the main body 210 has a loudspeaker port 220, which is located on the side of the loudspeaker 100 and communicates with the outside.

[0073] Specifically, the electric appliance device further includes a main body 210, the main body 210 has a loudspeaker port 220 which communicates with the outside, and the loudspeaker 100 is arranged on the main body 210, and the sound wave formed by the loudspeaker 100 can be transmitted to the outside through the loudspeaker port 220, so as to play a loudspeaker role. The loudspeaker port 220 is located on the side of the loudspeaker 100, avoiding occupying the position of the bottom of the electric appliance device, so as to reserve an opening space on the bottom of the electric appliance device and improve the appearance of the electric appliance device.

[0074] As Figure 1 , Figure 2 , Figure 4 and Figure 5 indicated, as one possible implementation, the present application provides a new loudspeaker (i.e. loudspeaker 100) that realizes real-time monitoring of the polarization, and then feeds the polarization signal into the chip (i.e. processor), to stimulate the adjustment device to correct, so that the diaphragm 132 restores balanced vibration.

[0075] The present application proposes that the loudspeaker uses an ultrasonic wave transmitting and receiving device (i.e. detection assembly 140), which includes a transmitting part 141 and a receiving part 142. The ultrasonic wave emitted by the transmitting part 141 hits the ball top (i.e. cover plate 131) and is reflected back and picked up by the receiving part 142. By analyzing the changes in the ultrasonic wave spectrum picked up by the receiving part 142 at different positions, the state of the polarization of the ball top is obtained, and then the vibration control device (i.e. adjustment device 150) is used to correct the polarization.

[0076] The improved loudspeaker adds an ultrasonic wave transmitting and receiving device, which is arranged on the magnetic conducting sheet (i.e. first magnetic conducting member 1112). The cross-sectional view of the entire loudspeaker is shown in Figure 1 .

[0077] The ultrasonic wave transmitting and receiving device is an ultrasonic wave transmitting and receiving array, which is divided into a transmitting part 141 and a receiving part 142. The transmitting part 141 is used to emit ultrasonic waves, and the receiving part 142 is used to receive ultrasonic waves and convert them into electrical signals. For example, MEMS (micro-electro-mechanical system) piezoelectric film loudspeakers and the like can realize ultrasonic wave transmitting and receiving actions, which are not limited here.

[0078] As Figure 6 and Figure 12As shown, four ultrasonic wave transmitting and receiving devices are taken as an example for illustration, which are respectively a first ultrasonic wave transmitting and receiving device 140a, a second ultrasonic wave transmitting and receiving device 140b, a third ultrasonic wave transmitting and receiving device 140c and a fourth ultrasonic wave transmitting and receiving device 140d. The first ultrasonic wave transmitting and receiving device 140a comprises a first transmitting part 141a and a first receiving part 142a, the second ultrasonic wave transmitting and receiving device 140b comprises a second transmitting part 141b and a second receiving part 142b, the third ultrasonic wave transmitting and receiving device 140c comprises a third transmitting part 141c and a third receiving part 142c, and the fourth ultrasonic wave transmitting and receiving device 140d comprises a fourth transmitting part 141d and a fourth receiving part 142d. The ultrasonic wave frequency bands emitted by the four ultrasonic wave transmitting and receiving devices are different, for example, the ultrasonic wave frequencies emitted by the first transmitting part 141a, the second transmitting part 141b, the third transmitting part 141c and the fourth transmitting part 141d are respectively 25 kHz, 30 kHz, 35 kHz and 40 kHz. The first transmitting part 141a is arranged adjacent to the first receiving part 142a, the second transmitting part 141b is arranged adjacent to the second receiving part 142b, and so on. Therefore, in the ultrasonic wave received by each receiving part 142, the ultrasonic wave energy corresponding to the transmitting part 141 is the highest. For example, in the ultrasonic wave received by the first receiving part 142a, the ultrasonic wave energy of 25 kHz is the highest.

[0079] As shown in FIG. 6, the ultrasonic wave transmitting and receiving device 140 is arranged on the ball top 130. The ball top 130 is in a state of balanced vibration, and the ultrasonic wave transmitting and receiving device 140 is in a state of balanced vibration. Figure 2 As shown in FIG. 7, when the four transmitting parts 141 emit ultrasonic waves of four frequency bands, each receiving part 142 receives ultrasonic wave signals of the four frequency bands. However, as described above, when the diaphragm 132 is in a state of balanced vibration, the ultrasonic wave energy corresponding to the transmitting part 141 of each receiving part 142 is the highest, and the ultrasonic wave energy emitted by other transmitting parts 141 is smaller.

[0080] When the ball top is in a state of balanced vibration, the ultrasonic wave signal picked up by each receiving part 142 is basically stable, as shown in FIG. 8, the ultrasonic wave frequency response curve of each receiving part 142 is different, so as to determine that the ball top is in a state of balanced vibration. Figure 10 When the ball top is in a state of inclined vibration, as shown in FIG. 9, it can be seen that due to the inclination of the ball top, ultrasonic wave energy is scattered to other receiving parts 142 positions, causing the ultrasonic wave frequency response curve of the receiving part 142 to change, as shown in FIG. 10, the ultrasonic wave received by each receiving part 142 changes, and the receiving part 142 converts the change of ultrasonic wave energy into a change on the electric signal, and transmits the change to the CPU (central processing unit, central processor) (i.e. processor), and then determines the polarization state of the current ball top.

[0081] Figure 4 Figure 11 ​​​

[0082] As Figure 7 is a detailed layout embodiment of an optional ultrasonic wave transmitting-receiving device, the transmitting part 141 of the ultrasonic wave transmitting-receiving device is arranged adjacent to the receiving part 142. As Figure 6 is a plan view of a magnetic conducting sheet (i.e. the first magnetic conducting member 1112), and there are four ultrasonic wave transmitting-receiving devices in total.

[0083] When the system determines that it is in a polarized state, a correction means can be used to restore the balance of the ball top. The following correction device is only an example.

[0084] As Figure 5 shown is an example of a polarization correction device (i.e. adjustment device 150), in the diaphragm 132, a thin sheet of electro-deformation material (i.e. adjustment sheet 151) is added as a polarization controller, such as a piezoelectric sheet, dielectric elastomer, etc. From Figure 8 it can be seen that among the four edges of the diaphragm 132, four polarization controllers are integrated, namely the first polarization controller 151a, the second polarization controller 151b, the third polarization controller 151c and the fourth polarization controller 151d. The polarization controller can be a piezoelectric film material, which will produce different deformation forces with different voltages applied to both ends, thereby being able to adjust the amplitude of the diaphragm 132.

[0085] These polarization controllers are respectively connected to the circuit in communication with the CPU and the ultrasonic wave transmitting-receiving device, and in response to different sizes of voltage or current signals, different deformations can be produced, thereby being able to change the stiffness coefficient of the diaphragm 132. For example, when the diaphragm 132 on the side where the second polarization controller 151b is located (in Figure 8 , the second polarization controller 151b is located on the right side) has an excessively large amplitude, as Figure 9 shown, the second polarization controller 151b will increase the stiffness coefficient of the diaphragm 132 on that side, so that the excessively large amplitude returns to balance.

[0086] The present application detects the vibration of different regions of the diaphragm 132 by adding an ultrasonic amplitude detection device (i.e. detection assembly 140) in the loudspeaker, to achieve amplitude detection. On the basis of amplitude detection, a vibration controller (i.e. adjustment device 150) such as a piezoelectric film material is added to the diaphragm 132 of the loudspeaker, to adjust the amplitude of the diaphragm 132 through an electrical signal.

[0087] Therefore, the loudspeaker proposed in the present application can make the vibration of the loudspeaker diaphragm 132 return to balance when the diaphragm 132 is polarized. Considering that the amplitude of a low-frequency loudspeaker is very large, the present application can maximize the low-frequency amplitude without considering the debugging margin for polarization.

[0088] In addition, considering that in high altitude areas, the air pressure is low, according to the acoustic principle, the compliance of the back cavity of the loudspeaker increases (the compliance is the inverse of the elastic coefficient, the compliance is inversely proportional to the air density, in high altitude areas, the air pressure is low, the air is thin, so the air density is small, then the compliance increases, that is, the stiffness coefficient decreases, which is equivalent to the elastic element becoming soft, under the same driving force, the amplitude of the diaphragm 132 of the loudspeaker will be larger), the amplitude of the diaphragm 132 of the loudspeaker may be larger, which will exceed the design value and cause damage to the device. The loudspeaker provided in the present application can ensure that the amplitude of the diaphragm 132 of the loudspeaker does not exceed the threshold value in a low pressure environment, improves the reliability of the device, and improves the low frequency performance.

[0089] In the description of the present specification, the description referring to the terms "one embodiment", or "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A loudspeaker, characterized in that: include: a first magnetic component; A plurality of second magnetic components surrounding the first magnetic component, with a distance between any of the second magnetic components and the first magnetic component; a coil wrapped around a circumference of the first magnetic component, wherein the coil is at least partially located between the first magnetic component and the second magnetic component; a vibration component attached to the coil, wherein the coil drives the vibration component to vibrate under the action of the first magnetic component and the second magnetic component to emit sound waves; At least two detection components are provided on a side of the first magnetic component facing the vibration component, and any one of the detection components is used to receive a detection wave, and when a first difference is greater than or equal to a first threshold, it is indicated that the vibration component is not in a balanced position, wherein the first difference is a difference between the detection waves received by any two of the at least two detection components; an adjusting device electrically connected to any one of the detection assemblies, and adapted to adjust the position of the vibration assembly to restore the vibration assembly to the equilibrium position when the vibration assembly is not in the equilibrium position; The transmitting portion of any one of the at least two detection components is used to transmit a detection wave of a first frequency, and the transmitting portion of another of the at least two detection components is used to transmit a detection wave of a second frequency, and the first frequency and the second frequency are not equal; The receiving part of the detection component that transmits the detection wave of the first frequency is used to receive the detection wave of the first frequency, and the receiving part of the detection component that transmits the detection wave of the second frequency is used to receive the detection wave of the second frequency.

2. The loudspeaker according to claim 1, wherein Any of the detection components includes: a transmitting unit, the transmitting unit being configured to transmit the detection wave; A receiving unit is configured to receive the detection wave.

3. The loudspeaker according to claim 1, wherein The detection components are symmetrically arranged on the first magnetic component, or evenly arranged on the first magnetic component, or spaced apart on the first magnetic component.

4. The loudspeaker according to any one of claims 1 to 3, characterized in that When the vibration component is not in the equilibrium position, the adjustment device adjusts the position of the vibration component according to the first difference and the first threshold.

5. The loudspeaker according to any one of claims 1 to 3, characterized in that The vibration assembly comprises: cover; a diaphragm, wherein the diaphragm is partially located between the coil and the cover plate, the diaphragm is elastic, and the coil pushes the cover plate to vibrate through the diaphragm; Wherein, the adjustment device is installed on the surface of the diaphragm or inside the diaphragm. When the vibration component is not in the equilibrium position, the adjustment device adjusts the elasticity of the diaphragm to restore the vibration component to the equilibrium position.

6. The loudspeaker according to claim 5, characterized in that The adjusting device comprises: a plurality of adjusting sheets mounted on the surface of the diaphragm or inside the diaphragm; The speaker further comprises: A processor is electrically connected to the plurality of adjustment plates and the detection component, and the processor generates a corresponding electrical signal based on the first difference and the first threshold value. At least some of the plurality of adjustment plates generate corresponding deformation based on the electrical signal to adjust the elasticity of the diaphragm.

7. The loudspeaker according to any one of claims 1 to 3, characterized in that The first magnetic component includes: a first magnetic member, wherein the first magnetic member has magnetism; The first magnetic conductive member is arranged on a side of the first magnetic member facing the vibration component, and the first magnetic conductive member is used for collecting magnetic flux.

8. The loudspeaker according to any one of claims 1 to 3, characterized in that Any of the second magnetic components includes: a second magnetic member, wherein the second magnetic member has magnetism; The second magnetic conductive member is arranged on a side of the second magnetic member facing the vibration component, and the second magnetic conductive member is used for collecting magnetic flux.

9. An electrical device, characterized in that: include: The loudspeaker according to any one of claims 1 to 8; A power supply is electrically connected to the speaker, and the power supply is used to supply power to the speaker, and the power supply is used to be connected to a power source.

10. The electrical equipment according to claim 9, characterized in that: Also includes: The main body is provided with a speaker, and the speaker is installed on the main body. The speaker has a speaker port, and the speaker port is located on the side of the speaker and is connected to the outside.

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