Loudspeaker and electronic equipment

Abstract

The invention discloses a loudspeaker and electronic equipment, and belongs to the technical field of electronic equipment. The loudspeaker comprises a coil array, the coil array comprises a plurality of first coils and a plurality of second coils, the winding direction of the first coils is opposite to that of the second coils, and the number of the first coils arranged along each side edge of the coil array is the same as that of the second coils arranged along each side edge of the coil array; the plurality of center magnets respectively penetrate through the plurality of first coils and the plurality of second coils, and the number of the center magnets is the sum of the number of the first coils and the number of the second coils; and the plurality of side magnets are arranged on the peripheral side of the coil array in a surrounding manner.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a loudspeaker and an electronic device. Background Art

[0002] As mobile terminals become more and more powerful, the space inside mobile terminals becomes smaller and smaller, and the design of miniature loudspeakers is gradually improved. As the carrier of the driving force of the loudspeaker diaphragm, a multi-turn coil is easily interfered by the periodic current traces on the PCB board in the mobile terminal, generating an induced current in the loudspeaker coil. The induced current generates an Ampere force in the magnetic field lines of the loudspeaker, thereby driving the diaphragm to vibrate and generating interference current noise.

[0003] In related technologies, there are ways to reduce interference current noise by connecting a resistor in series in the loudspeaker circuit, adjusting the traces on the PCB (Printed Circuit Board), and performing signal compensation on the loudspeaker. Among them, the method of connecting a resistor in series has the problem of increasing the power consumption of the loudspeaker. The method of adjusting the traces on the PCB board increases the difficulty of PCB board trace routing. The method of signal compensation has a heavy processing load, and if the compensation signal phase is not aligned, it may also increase the interference current noise. Therefore, how to reduce the interference of the current sound of the loudspeaker without increasing the power consumption of the loudspeaker and without increasing the trace routing difficulty has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a loudspeaker and an electronic device, which solve the problem of reducing the interference of the current sound of the loudspeaker without increasing the power consumption of the loudspeaker and without increasing the trace routing difficulty.

[0005] In a first aspect, the embodiments of this application provide a loudspeaker, including: a coil array, the coil array includes a plurality of first coils and a plurality of second coils, wherein the winding direction of the first coil is opposite to the winding direction of the second coil, and the number of the first coils and the second coils arranged along each side of the coil array is the same; a plurality of central magnets, the plurality of central magnets respectively pass through the plurality of first coils and the plurality of second coils, and the number of the central magnets is the sum of the number of the first coils and the second coils; a plurality of side magnets, the plurality of side magnets are arranged around the periphery of the coil array.

[0006] In a second aspect, the embodiments of this application provide an electronic device, including: the loudspeaker in any of the above technical solutions.

[0007] In the embodiments of the present application, a coil array including a plurality of coils is provided in a speaker. The number of the first coil and the second coil in the coil array distributed on each side of the coil array is the same. Since the winding directions of the first coil and the second coil are opposite, when there is an external interference signal, the interference energy in the first coil can cancel out the interference energy in the second coil pairwise, reducing the interference of the current sound generated by the speaker affected by the external interference signal. Moreover, it is not necessary to add a structure to the driving circuit of the coil, which will not increase the power consumption of the speaker, nor is it necessary to re-set the wiring of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. 6 shows one of the schematic structural diagrams of the speaker provided in some embodiments of the present application;

[0009] Figure 2 FIG. 10 shows a winding schematic diagram of the first coil and the second coil provided in some embodiments of the present application;

[0010] Figure 3 FIG. 14 shows another schematic structural diagram of the speaker provided in some embodiments of the present application;

[0011] Figure 4 FIG. 18 shows a cancellation schematic diagram of the speaker against interference in different directions provided in some embodiments of the present application;

[0012] Figure 5 FIG. 22 shows a schematic structural diagram of the electronic device provided in some embodiments of the present application.

[0013] The reference numerals are as follows:

[0014] 100 Speaker, 110 Coil array, 111 First coil, 112 Second coil, 120 Central magnet, 121 First central magnet, 122 Second central magnet, 130 Side magnet, 131 First side magnet, 132 Second side magnet, 140 Bracket assembly, 141 Voice coil bobbin, 142 Speaker frame, 143 Accommodating space, 150 Vibration assembly, 151 Dome structure, 152 Diaphragm, 160 Magnetic circuit assembly, 161 Side pole piece, 162 Central pole piece, 163 Magnetic cover structure, 170 Conductive assembly, 200 Electronic device, 202 Sound outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0016] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally indicates an "or" relationship between the associated objects before and after.

[0017] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0019] The following Figures 1 to 5 will, with reference to the accompanying drawings, through specific embodiments and their application scenarios, provide a detailed description of the loudspeaker and electronic device provided by the embodiments of this application.

[0020] In some embodiments of this application, a loudspeaker is provided. Figure 1 FIG. 1 shows one of the schematic structural diagrams of the loudspeaker provided in some embodiments of this application. Figure 2 FIG. 2 shows the winding schematic diagrams of the first coil and the second coil provided in some embodiments of this application. Figure 3 FIG. 3 shows another schematic structural diagram of the loudspeaker provided in some embodiments of this application. As Figure 1 , Figure 2 and Figure 3 shown, the loudspeaker 100 includes:

[0021] Coil array 110, the coil array 110 includes a plurality of first coils 111 and a plurality of second coils 112, wherein the winding direction of the first coil 111 is opposite to the winding direction of the second coil 112, and the number of the first coils 111 and the second coils 112 arranged along each side of the coil array 110 is the same; a plurality of central magnets 120, the plurality of central magnets 120 are respectively disposed through the plurality of first coils 111 and the plurality of second coils 112, and the number of the central magnets 120 is the sum of the number of the first coils 111 and the second coils 112; a plurality of side magnets 130, the plurality of side magnets 130 are disposed around the periphery of the coil array 110.

[0022] In the embodiment of the present application, the loudspeaker 100 includes a coil array 110, and the coil array 110 is an audio coil structure formed by arranging a plurality of coils in an array manner. Among them, the coil array 110 includes a plurality of first coils 111 and a plurality of second coils 112. The winding directions of the plurality of first coils 111 are the same, the winding directions of the plurality of second coils 112 are the same, and the winding direction between the first coil 111 and the second coil 112 is opposite. When an interference signal interferes with the coil array 110 from the outside, the current directions generated in the wires of the first coil 111 and the wires of the second coil 112 are the same. However, since the winding directions of the first coil 111 and the second coil 112 are opposite, the magnetic induction line directions of the first coil 111 and the second coil 112 are opposite. According to the left-hand rule, the Ampere forces generated by the first coil 111 and the second coil 112 are opposite. Since the number of the first coils 111 and the second coils 112 on the side of each coil array 110 is the same, the Ampere forces generated by the first coil 111 and the second coil 112 can cancel each other out when acting on the diaphragm 152. In the embodiment of the present application, the coil array 110 may be a polygon array, specifically, for example: a quadrilateral array.

[0023] As Figure 2 shown, exemplarily, the coil array 110 is a quadrilateral array, Figure 2 The arrow A' in

[0024] shows the first direction, and the arrow B' shows the second direction. The first direction is the extending direction of the horizontal side of the coil array 110, and the second direction is the extending direction of the vertical side of the coil array 110. The coil array 110 includes two first coils 111 and two second coils 112. The number of the first coils 111 and the second coils 112 is the same on the two sides in the first direction, and the number of the first coils 111 and the second coils 112 is also the same on the two sides in the second direction.

[0025] In the embodiment of the present application, the loudspeaker 100 further includes a central magnet 120 and a side magnet 130. The number of central magnets 120 is the same as the number of coils in the coil array 110, so as to ensure that each central magnet 120 passes through each first coil 111 and each second coil 112. The side magnets 130 are arranged around the central magnet 120 and the periphery of the coil array 110. The side magnets 130 and the central magnet 120 can cooperate to form a magnetic field.

[0026] It should be noted that since the side magnets 130 need to form a magnetic field with the central magnet 120, the number of side magnets 130 is the same as the number of outer edges of the central magnet 120, and the side magnets 130 need to be arranged with opposite magnetic poles to the corresponding central magnet 120.

[0027] As Figure 2 shown, for example, the coil array 110 includes two first coils 111 and two second coils 112. The number of central magnets 120 is four, and the four central magnets 120 are respectively passed through the two first coils 111 and the two second coils 112. The number of side magnets 130 is eight. Each central magnet 120 corresponds to two side magnets 130, and the magnetic poles of the corresponding central magnet 120 and side magnet 130 are opposite. That is, if the central magnet 120 is an N pole, the corresponding side magnet 130 is an S pole; if the central magnet 120 is an S pole, the corresponding side magnet 130 is an N pole.

[0028] Figure 4 shows a schematic diagram of the cancellation of interference in different directions by the loudspeaker provided in some embodiments of the present application. As Figure 2 and Figure 4 shown, Figure 4Regions 1 and 4 are the regions corresponding to the first coil 111, and regions 2 and 3 are the regions corresponding to the second coil 112. The interference signal comes from the external interference coil array 110. According to Faraday's law of electromagnetic induction, the coil array 110 generates an opposite magnetic field. The directions of the induced currents generated in the wires of the first coil 111 and the second coil 112 are the same, but the directions of the magnetic induction lines in regions 1, 4 and regions 2, 3 are opposite. Therefore, the Ampere forces generated by the first coil 111 corresponding to regions 1 and 4 and the Ampere forces generated by the second coil 112 corresponding to regions 2 and 3 are opposite and cancel each other out. The number of the two first coils 111 and the two second coils 112 distributed on different sides is the same. Therefore, the interference signals generated by the interference traces in different directions can be cancelled. Specifically, the interference A generates interference of the same magnitude and opposite directions in the first coil 111 corresponding to region 1 and the second coil 112 corresponding to region 3, which cancels each other out, and the interference A generates interference of the same magnitude and opposite directions in the second coil 112 corresponding to region 2 and the first coil 111 corresponding to region 4, which cancels each other out. The interference B generates interference of the same magnitude and opposite directions in the first coil 111 corresponding to region 1 and the second coil 112 corresponding to region 2, which cancels each other out, and the interference B generates interference of the same magnitude and opposite directions in the second coil 112 corresponding to region 3 and the first coil 111 corresponding to region 4, which cancels each other out. Therefore, no matter where the interference is generated, the speaker 100 will not emit the current interference sound caused by external interference.

[0029] As Figure 2 shown, when the speaker 100 outputs audio normally, the current of the audio signal enters from the P terminal and flows out from the N terminal. According to the left-hand rule, the directions of the Ampere forces generated in the coils corresponding to regions 1, 2, 3 and 4 are the same, and the number of turns of the first coil 111 and the second coil 112 is the same, and the magnetic field intensity is the same. The Ampere forces generated by the first coil 111 and the second coil 112 are equal. Therefore, the speaker 100 can work normally.

[0030] In the embodiment of the present application, a coil array 110 including multiple coils is provided in the speaker 100. The number of the first coils 111 and the second coils 112 in the coil array 110 distributed on each side of the coil array 110 is the same. Since the winding directions of the first coil 111 and the second coil 112 are opposite, when there is an external interference signal, the interference energy in the first coil 111 can cancel out the interference energy in the second coil 112 pairwise, reducing the interference of the current sound generated by the speaker 100 affected by the external interference signal, and there is no need to add a structure to the driving circuit of the coil, which will not increase the power consumption of the speaker 100, nor is it necessary to re-wire the PCB board.

[0031] As Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , in some embodiments of the present application, the first coils 111 and the second coils 112 arranged along each side of the coil array 110 are alternately arranged.

[0032] In the embodiments of the present application, on each side of the coil array 110, multiple first coils 111 and multiple second coils 112 are alternately and adjacently arranged. Since the Ampere forces generated by the first coils 111 and the second coils 112 when being affected by interference signals are the same, by alternately arranging the first coils 111 and the second coils 112, the Ampere forces exerted on the diaphragm 152 by the first coils 111 and the second coils 112 can be made more uniform. Thus, when the coil array 110 is affected by interference signals, the cancellation effect of the Ampere forces of the first coils 111 and the second coils 112 is better.

[0033] As Figure 2 shown, for example, the number of coils in the coil array 110 is 4, the coil array 110 is arranged in 2 rows and 2 columns. The first row is arranged in sequence of the first coil 111, the second coil 112, and the second row is arranged in sequence of the second coil 112, the first coil 111. Then the first column is arranged in sequence of the first coil 111, the second coil 112, and the second column is arranged in sequence of the second coil 112, the first coil 111.

[0034] As Figure 2 shown, in some embodiments of the present application, multiple first coils 111 and multiple second coils 112 are connected end to end in sequence. Among them, when the speaker 100 outputs audio, the current direction of the first coil 111 is opposite to that of the second coil 112.

[0035] In the embodiments of the present application, when winding the first coil 111 and the second coil 112, the first coil 111 and the second coil 112 can be formed by winding a single wire, that is, two adjacent coils among multiple first coils 111 and multiple second coils 112 are connected end to end. When the coil array 110 receives an audio signal, the current of the audio signal can flow through the first coil 111 and the second coil 112. Since the winding directions of the first coil 111 and the second coil 112 are opposite, when the current flows through the first coil 111 and the second coil 112, the current direction in the first coil 111 is opposite to that in the second coil 112. Under the action of the corresponding central magnet 120 and side magnet 130, the first coil 111 and the second coil 112 drive the diaphragm 152 to move synchronously to generate sound. When the coil array 110 is affected by interference signals, the Ampere forces generated in opposite directions by the first coil 111 and the second coil 112 can also be applied to the diaphragm 152 synchronously, thereby improving the cancellation effect of the Ampere forces.

[0036] Specifically, when the speaker 100 outputs audio, the process of current flowing through the first coil 111 and the second coil 112 specifically includes: the current flows in through the inlet wire of the first coil 111 and flows out through the outlet wire of the first coil 111. The current flows in through the outlet wire of the second coil 112 and flows out through the inlet wire of the second coil 112. Thus, when the current flows through the first coil 111 and the second coil 112, the direction of the current in the first coil 111 is opposite to the direction of the current in the second coil 112.

[0037] As Figure 1 and Figure 2 shown, in some embodiments of the present application, the multiple central magnets 120 include: a first central magnet 121, the first central magnet 121 passes through the first coil 111, and the number of the first central magnets 121 is the same as the number of the first coils 111; a second central magnet 122, the second central magnet 122 passes through the second coil 112, and the number of the second central magnets 122 is the same as the number of the second coils 112; wherein, the polarities of the first central magnet 121 and the second central magnet 122 are opposite.

[0038] In the embodiments of the present application, the multiple central magnets 120 include a first central magnet 121 and a second central magnet 122. The first central magnet 121 is correspondingly arranged with the first coil 111, that is, the first central magnet 121 passes through the middle of the first coil 111. The second central magnet 122 is correspondingly arranged with the second coil 112, that is, the second central magnet 122 passes through the middle of the second coil 112. The polarities of the first central magnet 121 and the second central magnet 122 are opposite.

[0039] It should be noted that the first central magnet 121 passes through the first coil 111, the second central magnet 122 passes through the second coil 112, the polarities of the first central magnet 121 and the second central magnet 122 are opposite, and the winding directions of the first coil 111 and the second coil 112 are opposite. Therefore, when the coil array 110 receives an audio signal, it can ensure that the directions of the Ampere forces generated by the first coil 111 and the second coil 112 are the same.

[0040] In the embodiments of the present application, since the winding directions of the first coil 111 and the second coil 112 are opposite, by setting the polarities of the first central magnet 121 corresponding to the first coil 111 and the second central magnet 122 corresponding to the second coil 112 to be opposite, when the coil array 110 receives an audio signal, it can ensure that the directions of the Ampere forces generated by the first coil 111 and the second coil 112 are the same, thereby improving the operating stability of the speaker 100.

[0041] As Figure 2As shown, in some embodiments of the present application, the multiple side magnets 130 include: a first side magnet 131, the first side magnet 131 is disposed adjacent to the first central magnet 121, and the polarity of the first side magnet 131 is opposite to the polarity of the first central magnet 121; a second side magnet 132, the second side magnet 132 is disposed adjacent to the second central magnet 122, and the polarity of the second side magnet 132 is opposite to the polarity of the second central magnet 122.

[0042] In the embodiments of the present application, the multiple side magnets 130 include a first side magnet 131 and a second side magnet 132. When the number of the first side magnets 131 is at least two, the polarities of the at least two first side magnets 131 are the same. When the number of the second side magnets 132 is at least two, the polarities of the at least two second side magnets 132 are the same. Wherein, the first side magnet 131 is used to cooperate with the first central magnet 121 to form a magnetic field, and the second side magnet 132 is used to cooperate with the second central magnet 122 to form a magnetic field. Then, the polarity of the first side magnet 131 and the polarity of the first central magnet 121 are set to be opposite polarities, and the polarity of the second side magnet 132 and the polarity of the second central magnet 122 are set to be opposite polarities.

[0043] Exemplarily, if the polarity of the first central magnet 121 is N, then the polarity of the second central magnet 122 is S, the polarity of the first side magnet 131 is S, and the polarity of the second side magnet 132 is N.

[0044] Exemplarily, if the polarity of the first central magnet 121 is S, then the polarity of the second central magnet 122 is N, the polarity of the first side magnet 131 is N, and the polarity of the second side magnet 132 is S.

[0045] In the embodiments of the present application, by providing the first side magnet 131 that cooperates with the first central magnet 121 and the second side magnet 132 that cooperates with the second central magnet 122 in the speaker 100, and setting the polarity of the first side magnet 131 opposite to the polarity of the first central magnet 121, and setting the polarity of the second side magnet 132 opposite to the polarity of the second central magnet 122, the stability of the speaker 100 during normal audio output is ensured.

[0046] As Figure 1 shown, in some embodiments of the present application, the speaker 100 further includes: a bracket assembly 140, the coil array 110 is disposed on the bracket assembly 140; a vibration assembly 150, disposed on the bracket assembly 140; a magnetic circuit assembly 160, connected to the bracket assembly 140, and the multiple central magnets 120 and the multiple side magnets 130 are disposed on the magnetic circuit assembly 160; a conductive assembly 170, connected to the coil array 110. Wherein, the vibration assembly 150 and the magnetic circuit assembly 160 are disposed opposite to each other, and the vibration assembly 150 and the magnetic circuit assembly 160 are located on both sides of the bracket assembly 140.

[0047] In the embodiment of the present application, the loudspeaker 100 includes a bracket assembly 140, a vibration assembly 150, and a magnetic circuit assembly 160. The bracket assembly 140 can support the vibration assembly 150. The vibration assembly 150 is a vibration structure driven by the coil array 110, and the vibration assembly 150 can emit sound under the drive of the coil array 110. The magnetic circuit assembly 160 can carry a plurality of central magnets 120 and a plurality of side magnets 130, that is, the magnetic circuit assembly 160 can carry the magnetic circuit structure in the loudspeaker 100, and the magnetic circuit assembly 160 is made of a magnetic conductive material and can also guide the magnetic induction lines of the plurality of central magnets 120 and the plurality of side magnets 130, so as to confine the magnetic induction lines in the upper and lower surface regions of the central magnets 120 and the side magnets 130. The conductive assembly 170 is used to supply electric energy to the coil array 110. Among them, the vibration assembly 150 and the magnetic circuit assembly 160 for vibrating and generating sound are respectively located on both sides of the bracket assembly 140, so that the coil array 110, the central magnet 120, the side magnet 130, and the vibration assembly 150 are arranged oppositely, so that the coil array 110 can cooperate with the central magnet 120 and the side magnet 130 to stably drive the vibration assembly 150 to vibrate and generate sound.

[0048] Exemplarily, the conductive assembly 170 includes a plurality of conductive structures, and each conductive structure is respectively connected to the first coil 111 and the second coil 112 in the coil array 110 in a one-to-one correspondence. Specifically, for example: the coil array 110 includes two first coils 111 and two second coils 112, a total of four coils, and the conductive assembly 170 includes four flexible printed circuits (Flexible Printed Circuit, FPC). The flexible printed circuit electrically connects the coils in the coil array 110 to the external circuit through pads, and the four flexible printed circuits are respectively connected to the bottoms of the four coils.

[0049] In the embodiment of the present application, by arranging the bracket assembly 140 and the magnetic circuit assembly 160 in the loudspeaker 100, the coil array 110 and the vibration assembly 150 can be stably installed through the bracket assembly 140, so that the coil array 110 can drive the vibration assembly 150 to move and generate sound, and through the magnetic circuit assembly 160, the central magnet 120 and the side magnet 130 can be carried and the magnetic induction lines can be guided, and through the conductive assembly 170, electric energy is supplied to the coil array 110, so that the coil array 110 is in a stable magnetic field environment, and the stability of the operation of the loudspeaker 100 is improved.

[0050] Exemplarily, the first coil 111 and the second coil 112 in the coil array 110 can be arranged in the same plane. Specifically, for example: the coil array 110 is stacked in parallel on the same plane.

[0051] Exemplarily, the first coil 111 and the second coil 112 in the coil array 110 may not be in the same plane. Specifically, for example, the coil array 110 is arranged with a dislocation in the distribution direction between the vibration assembly 150 and the magnetic circuit assembly 160, that is, with a dislocation in the Z-axis direction of the speaker 100.

[0052] In some embodiments of the present application, the bracket assembly 140 includes: a voice coil bobbin 141, the voice coil bobbin 141 is connected to the vibration assembly 150 and the coil array 110, and the voice coil bobbin 141 is located between the vibration assembly 150 and the coil array 110; a chassis 142, the chassis 142 encloses an accommodation space 143, the voice coil bobbin 141 is located in the accommodation space 143, and the chassis 142 is connected to the vibration assembly 150 and the magnetic circuit assembly 160.

[0053] In the embodiments of the present application, the bracket assembly 140 includes a voice coil bobbin 141 and a chassis 142. The voice coil bobbin 141 is used to connect the vibration assembly 150 and the coil array 110, and the voice coil bobbin 141 plays a supporting role for the vibration assembly 150 and the coil array 110.

[0054] Exemplarily, the side of the voice coil bobbin 141 away from the vibration assembly 150 is bonded with the coil array 110.

[0055] In the embodiments of the present application, both the voice coil bobbin 141 and the coil array 110 are embedded in the accommodation space of the chassis 142. The chassis 142 is connected to the vibration assembly 150 and the magnetic circuit assembly 160. The chassis 142 is located between the vibration assembly 150 and the magnetic circuit assembly 160. A central magnet 120 and a side magnet 130 are provided on the magnetic circuit assembly 160. The chassis 142 is connected to the peripheral edge of the vibration assembly 150, and the central magnet 120 and the side magnet 130 are provided on the magnetic circuit assembly 160. The connection between the chassis 142 and the magnetic circuit assembly 160 can also play a role in positioning the magnetic circuit structure in the speaker 100.

[0056] Exemplarily, the chassis 142 can be a metal chassis or a non-metal chassis. Specifically, for example, the chassis 142 is a metal chassis. The metal chassis is injection-molded together with the dome structure 151 in the vibration assembly 150, and is connected to the side pole piece 161 in the magnetic circuit assembly 160 by laser welding, or is integrally formed with the side pole piece 161 in the magnetic circuit assembly 160.

[0057] Exemplarily, the voice coil bobbin 141 can be connected to the diaphragm 152 in the vibration assembly 150 by bonding, or the voice coil bobbin 141 is integrally formed with the dome structure 151 in the vibration assembly 150.

[0058] In the embodiments of the present application, a voice coil bobbin 141 and a chassis 142 are provided in the bracket assembly 140. The voice coil bobbin 141 can support the vibration assembly 150 and the coil array 110, and the chassis 142 is connected to the vibration assembly 150 and the magnetic circuit assembly 160. Since both the central magnet 120 and the edge magnet 130 are provided on the magnetic circuit assembly 160, the chassis 142 can play a role in positioning the magnetic circuit structure of the speaker 100, that is, the chassis 142 and the voice coil bobbin 141 support and position the internal structure of the speaker 100, further improving the structural stability of the speaker 100.

[0059] As Figure 1 shown, in some embodiments of the present application, the magnetic circuit assembly 160 includes: an edge pole piece 161, the edge pole piece 161 is disposed on the chassis 142, the edge pole piece 161 is connected to the edge magnet 130, and the edge pole piece 161 is located on the side of the edge magnet 130 close to the vibration assembly 150; a central pole piece 162, disposed on the central magnet 120, and the central pole piece 162 is located on the side of the central magnet 120 close to the vibration assembly 150; a magnetic shield structure 163, connected to the central magnet 120 and the edge magnet 130, and the central magnet 120 and the edge magnet 130 are located on the side of the magnetic shield structure 163 close to the vibration assembly 150.

[0060] In the embodiments of the present application, the magnetic circuit assembly 160 includes an edge pole piece 161, a central pole piece 162 and a magnetic shield structure 163. The edge pole piece 161 and the central pole piece 162 are respectively located on the sides of the edge magnet 130 and the central magnet 120 close to the vibration assembly 150, and the magnetic shield structure 163 is located on the side of the edge magnet 130 and the central magnet 120 away from the vibration assembly 150, that is, the edge magnet 130 is located between the edge pole piece 161 and the magnetic shield structure 163, and the central magnet 120 is located between the central pole piece 162 and the magnetic shield structure 163. The edge pole piece 161 and the edge magnet 130 are provided in one-to-one correspondence, and the central pole piece 162 and the central magnet 120 are provided in one-to-one correspondence. Therefore, the edge pole piece 161, the central pole piece 162 and the magnetic shield structure 163 can fix the magnetic induction lines of the edge magnet 130 and the central magnet 120 in the moving area of the coil array 110, that is, the edge pole piece 161, the central pole piece 162 and the magnetic shield structure 163 can guide the magnetic induction lines and improve the BL (product of the magnetic flux density B in the magnetic gap and the length L of the voice coil wire) coefficient of the speaker 100.

[0061] Exemplarily, the sides of the central magnet 120 and the edge magnet 130 away from the vibration assembly 150 are adhesively provided with the magnetic shield structure 163.

[0062] Exemplarily, when the basin frame 142 is a metal basin frame, the side pole piece 161 is connected to the metal basin frame by laser welding, or the side pole piece 161 is integrally formed with the metal basin frame. If the basin frame 142 is a non-metal basin frame, the side pole piece 161 is disposed on the non-metal basin frame by injection molding.

[0063] Exemplarily, the side of the side pole piece 161 away from the vibration assembly 150 is adhesively bonded to the side of the side magnet 130 close to the vibration assembly 150, and the side of the center pole piece 162 away from the vibration assembly 150 is adhesively bonded to the side of the center magnet 120 close to the vibration assembly 150.

[0064] As Figure 1 shown, in some embodiments of the present application, the vibration assembly 150 includes: a dome structure 151, the dome structure 151 is connected to the voice coil skeleton 141; a diaphragm 152, which is attached to the dome structure 151, and the edge of the diaphragm 152 is connected to the basin frame 142; wherein, the diaphragm 152 is located on one side of the dome structure 151 close to the coil array 110, or the diaphragm 152 is located on one side of the dome structure 151 away from the coil array 110.

[0065] In the embodiments of the present application, the vibration assembly 150 includes a diaphragm 152 and a dome structure 151. The dome structure 151 is connected to the voice coil skeleton 141, and the dome structure 151 is attached to the diaphragm 152. When an audio signal is input to the coil array 110, the coils in the coil array 110 drive the dome structure 151 and the diaphragm 152 to move under the action of the magnetic field generated by the center magnet 120 and the side magnet 130. The movement of both the dome structure 151 and the diaphragm 152 can drive the air to vibrate and generate sound. The dome structure 151 is designed in a hemispherical shape, and the dome structure 151 can optimize the high-frequency response and reduce the splitting movement.

[0066] Exemplarily, the dome structure 151 can be integrally formed with the voice coil skeleton 141, or the dome structure 151 is adhesively bonded to the voice coil skeleton 141, and the dome structure 151 is located on one side of the voice coil skeleton 141 away from the coil array 110.

[0067] Exemplarily, the basin frame 142 surrounds the periphery of the diaphragm 152, and the basin frame 142 is adhesively bonded to the edge of the diaphragm 152. The basin frame 142 can fix the diaphragm 152.

[0068] Exemplarily, if the diaphragm 152 is located on one side of the dome structure 151 away from the coil array 110, then the dome structure 151 is located between the diaphragm 152 and the coil array 110, which helps to improve the waterproof performance of the speaker 100 and prevent external liquid from directly contacting the dome structure 151 and causing the dome structure 151 to delaminate.

[0069] Exemplarily, the diaphragm 152 is located on the side of the dome structure 151 close to the coil array 110. Then, the diaphragm 152 is located between the dome structure 151 and the bracket assembly 140. The coil array 110 can drive the diaphragm 152 and the dome structure 151 to vibrate, and the dome structure 151 is located outside the diaphragm 152, which can further optimize the high-frequency response of the speaker 100.

[0070] In some embodiments of the present application, an electronic device is provided. Figure 5 The schematic structural diagram of the electronic device provided in some embodiments of the present application is shown. As Figure 5 shown, the electronic device 200 includes: the speaker 100 in any of the above embodiments, and thus has all the beneficial technical effects of the speaker 100 in any of the above embodiments, which will not be elaborated herein.

[0071] Exemplarily, the electronic device 200 includes a sound outlet hole 202. The sound outlet hole 202 is provided on the housing of the electronic device, and the sound outlet hole 202 is arranged corresponding to the speaker 100.

[0072] In the embodiments of the present application, the electronic device can be a portable electronic device such as a mobile phone or a tablet computer.

[0073] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean 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 this specification, the schematic representations 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.

[0074] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A loudspeaker, characterized in that: include: A coil array, the coil array comprising a plurality of first coils and a plurality of second coils, wherein a winding direction of the first coils is opposite to a winding direction of the second coils, and the number of the first coils and the second coils arranged along each side of the coil array is the same; A plurality of central magnets, wherein the plurality of central magnets are respectively disposed through the plurality of first coils and the plurality of second coils, and the number of the central magnets is the sum of the number of the first coils and the number of the second coils; A plurality of edge magnets are disposed around the circumference of the coil array.

2. The loudspeaker according to claim 1, characterized in that The first coils and the second coils arranged along each side of the coil array are arranged alternately.

3. The loudspeaker according to claim 1, characterized in that The plurality of first coils and the plurality of second coils are connected end to end in sequence, wherein when the speaker outputs audio, a current direction of the first coil is opposite to a current direction of the second coil.

4. The loudspeaker according to any one of claims 1 to 3, characterized in that: The plurality of central magnets include: A first central magnet, wherein the first central magnet is disposed through the first coil, and the number of the first central magnet is the same as the number of the first coil; A second central magnet, wherein the second central magnet is disposed through the second coil, and the number of the second central magnet is the same as the number of the second coil; Wherein, the polarities of the first central magnet and the second central magnet are opposite.

5. The loudspeaker according to claim 4, characterized in that The plurality of edge magnets include: a first side magnet, the first side magnet being disposed adjacent to the first center magnet, the polarity of the first side magnet being opposite to the polarity of the first center magnet; The second side magnet is disposed adjacent to the second center magnet, and the polarity of the second side magnet is opposite to the polarity of the second center magnet.

6. The loudspeaker according to any one of claims 1 to 3, characterized in that: Also includes: A support assembly, wherein the coil array is arranged on the support assembly; A vibration assembly, disposed on the support assembly; A magnetic circuit assembly connected to the support assembly, and the plurality of center magnets and the plurality of side magnets are arranged on the magnetic circuit assembly; A conductive component connected to the coil array; Wherein, the vibration component and the magnetic circuit component are arranged opposite to each other, and the vibration component and the magnetic circuit component are located on both sides of the bracket component.

7. The loudspeaker according to claim 6, characterized in that The bracket assembly comprises: A voice coil frame, wherein the voice coil frame is connected to the vibration component and the coil array, and the voice coil frame is located between the vibration component and the coil array; A basin frame is enclosed to form a receiving space, the voice coil frame is located in the receiving space, and the basin frame is connected to the vibration component and the magnetic circuit component.

8. The loudspeaker according to claim 7, characterized in that The magnetic circuit assembly comprises: A side pole piece, the side pole piece is arranged on the basin frame, the side pole piece is connected to the side magnet, and the side pole piece is located on a side of the side magnet close to the vibration component; A central pole piece is disposed on the central magnet, and the central pole piece is located on a side of the central magnet close to the vibration component; The magnetic cover structure is connected to the central magnet and the side magnets. The central magnet and the side magnets are located on one side of the magnetic cover structure close to the vibration component.

9. The loudspeaker according to claim 7, characterized in that The vibration assembly comprises: A dome structure connected to the voice coil frame; A diaphragm is fitted on the dome structure, and the edge of the diaphragm is connected to the basin frame; The diaphragm is located on a side of the spherical top structure close to the coil array, or the diaphragm is located on a side of the spherical top structure far from the coil array.

10. An electronic device, characterized in that: include: A loudspeaker as claimed in any one of claims 1 to 9.

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