Speakers and electronic devices

Abstract

This application relates to the field of electroacoustic conversion and aims to solve the problems of insufficient strength and easy deformation of loudspeaker baskets or washer, providing loudspeakers and electronic devices. The loudspeaker includes a basket assembly, a magnetic circuit assembly, a first diaphragm assembly, and a second diaphragm assembly. The basket assembly includes a stacked first basket and a second basket, defining an inner space. The first basket and the second basket each have a first protrusion and a second protrusion extending along the thickness direction. The first diaphragm assembly and the second diaphragm assembly are disposed opposite to each other on the basket assembly. The magnetic circuit assembly includes a central magnetic part and a peripheral magnetic part; the peripheral magnetic part is fixedly connected to the basket assembly, and the central magnetic part is located within the inner space. The central magnetic part and the peripheral magnetic part are spaced apart to define a magnetic gap for cooperating with the first diaphragm assembly and the second diaphragm assembly; the central magnetic part is supported along a first direction between two first protrusions and two second protrusions. The beneficial effect of this application is high structural rigidity, which is conducive to loudspeaker miniaturization.

Description

Technical Field

[0001] This application relates to the field of electroacoustic conversion, and more specifically, to loudspeakers and electronic devices. Background Technology

[0002] Electronic devices such as laptops, tablets, mobile phones, telephones, and walkie-talkies sometimes need to be equipped with speakers for producing sound.

[0003] Some known loudspeakers incorporate a frame or similar structure to support the diaphragm and other sound-generating components. However, some loudspeaker structures suffer from insufficient frame or washer strength, making them prone to deformation under stress. This is especially true for smaller, miniature loudspeakers, where balancing small size with high strength is often difficult. Summary of the Invention

[0004] In a first aspect, embodiments of this application provide a loudspeaker, including a frame assembly, a magnetic circuit assembly, a first diaphragm assembly, and a second diaphragm assembly. The frame assembly has two first sidewalls spaced apart and opposite each other along a first direction, defining an inner space between the two first sidewalls; the frame assembly includes a first frame and a second frame, which are stacked and connected; the first frame includes two first sidewalls opposite each other along the first direction, and the second frame includes two second sidewalls opposite each other along the first direction; the two first sidewalls and the two second sidewalls are respectively stacked to form two first sidewalls; the first sidewall has a first surface facing the second sidewall and a first protrusion protruding from the first surface; the second sidewall has a second surface facing the first sidewall and a second protrusion protruding from the second surface, wherein the first protrusion and the second protrusion are offset from each other along a second direction, the second direction being the extension direction of the first sidewall or the second sidewall. The first diaphragm assembly is connected to the end of the first basin frame away from the second basin frame, and the second diaphragm assembly is connected to the end of the second basin frame away from the first basin frame; the magnetic circuit assembly includes a central magnetic part and a peripheral magnetic part; the peripheral magnetic part is fixedly connected to the basin frame assembly, the central magnetic part is located in the inner space, and the central magnetic part and the peripheral magnetic part are spaced apart to define a magnetic gap for cooperating with the first diaphragm assembly and the second diaphragm assembly; the central magnetic part is supported between two first protrusions along a first direction, and the central magnetic part is also supported between two second protrusions along a first direction.

[0005] The loudspeaker proposed in this application embodiment has a first diaphragm assembly and a second diaphragm assembly respectively provided on both sides of the frame assembly. The middle magnetic part and the outer magnetic part of the magnetic circuit assembly provide a magnetic gap, and the middle magnetic part supports the first protrusion and the second protrusion of the two first sidewalls along the first direction. This is beneficial to setting a smaller size for the bidirectional loudspeaker while maintaining sufficient structural rigidity. The middle magnetic part supporting the first frame and the second frame along the first direction can reduce the deformation of the first frame and the second frame respectively, and the deformation of the first frame and the second frame is consistent.

[0006] In one possible implementation, the intermediate magnetic part includes a support plate, and support tongues extending outward from both sides of the support plate along a first direction, the support tongues being supported between two first protrusions and between two second protrusions along the first direction.

[0007] In this embodiment, the support tongue of the support plate supports the first protrusion and the second protrusion respectively, which helps to improve the deformation consistency of the first basin stand and the second basin stand.

[0008] In one possible implementation, the first surface and the second surface are spaced apart from each other, and the support plate is fixedly fitted between the first surface and the second surface.

[0009] In this embodiment, the support plate is fixed between the first surface and the second surface, which can play a role in positioning and fitting the support plate. Furthermore, the connection between the support plate and the first / second surface can improve the integrity of the support plate and the basin frame assembly and improve the overall stress condition.

[0010] In one possible implementation, the first protrusion is recessed from the inner side of the first sidewall and the second protrusion is recessed from the inner side of the second sidewall to form a mating gap between the first surface and the second surface, and the support tongue extends into the mating gap and engages between the first surface and the second surface.

[0011] In this embodiment, the first boss and the second boss are recessed, and the support tongue extends between the first surface and the second surface. In addition to supporting the first basin stand and the second basin stand with the support plate, the support plate can be supported on the basin stand assembly by the support tongue at the middle position of its second direction, which improves the fit strength of the support plate on the basin stand assembly and reduces the possibility of bending deformation of the support plate along the thickness direction of the basin stand assembly in the middle part of the second direction.

[0012] In one possible implementation, the depth of the first protrusion is more than half the thickness of the first sidewall, and the depth of the second protrusion is more than half the thickness of the second sidewall.

[0013] In this embodiment, the greater depth of the first / second protrusion allows for a larger area to accommodate and support the support tongue, which is beneficial for its cooperation with the support plate.

[0014] In one possible implementation, the support tongue is fitted with either an interference fit or a clearance fit to the first sidewalls on both sides.

[0015] The interference fit mentioned here refers to a situation where the supporting length of the supporting tongue is slightly greater than the distance between the two first sidewalls, so that under the support of the supporting tongue, the two first sidewalls are subjected to an outward supporting force in a first direction, which counteracts any inward magnetic force or other external forces that the first sidewalls may experience. The clearance fit mentioned here refers to a situation where there is a small gap between the supporting tongue and the corresponding first sidewall, allowing the first sidewall to undergo a small inward deformation before being supported by the supporting tongue.

[0016] In one possible implementation, the support plate includes a middle plate portion and a support tongue, the support tongue being formed by extending outward from the middle position of the length direction of both sides of the middle plate portion in a first direction.

[0017] In this embodiment, the middle plate can be used to install structures such as magnets of the middle magnet, and the support tongue extends from the middle plate to form a support along the first direction together with the middle plate.

[0018] In one possible implementation, the support plate further includes a first connecting plate portion and a second connecting plate portion, which are respectively connected to both ends of the middle plate portion along a second direction, the second direction being perpendicular to the first direction; a support tongue is located between the first connecting plate portion and the second connecting plate portion. The first connecting plate portion is clamped between a first surface and a second surface, and the second connecting plate portion is also clamped between the first surface and the second surface.

[0019] In this embodiment, the support plate is connected to the first and second basin stands via the first and second connecting plate portions, which improves the connection strength between the support plate and the first and second basin stands. In addition, the support tongue is connected to the first and second basin stands, forming an overall connection structure in which the outer periphery of the support plate supports and connects to the middle position of the basin stand assembly in the thickness direction and the inner middle plate portion for setting magnets and other structures at both ends and the middle position along the second direction. The support plate has high connection rigidity and is not prone to deformation, ensuring the relative position stability of each component.

[0020] In one possible implementation, the intermediate magnetic section further includes a first intermediate magnet, a second intermediate magnet, a first intermediate washer, and a second intermediate washer; the first and second intermediate magnets are respectively fixedly connected to the two side panels of the middle plate, the first intermediate washer is connected to the side of the first intermediate magnet away from the middle plate, and the second intermediate washer is connected to the side of the second intermediate magnet away from the middle plate. The peripheral magnetic section includes a first peripheral washer, a second peripheral washer, and edge magnets; the first peripheral washer is connected to the first frame, and the second peripheral washer is connected to the second frame; the edge magnets are fixedly connected between the first and second peripheral washers. There are two sets of edge magnets, which are spaced apart from the first intermediate magnet along a first direction to define a first magnetic gap for cooperating with the first diaphragm assembly; the two sets of edge magnets are spaced apart from the second intermediate magnet along the first direction to define a second magnetic gap for cooperating with the second diaphragm assembly; the magnetic gap includes a first magnetic gap and a second magnetic gap.

[0021] In this embodiment, the intermediate magnetic part and the peripheral magnetic part are formed on the first magnetic gap and the second magnetic gap on both sides of the support plate, which can respectively cooperate with the first diaphragm assembly and the second diaphragm assembly.

[0022] In one possible implementation, the thickness of the side magnet is greater than the thickness of the support plate, and the side magnet includes portions located on both sides of the support plate, respectively corresponding to the first intermediate magnet and the second intermediate magnet.

[0023] In this embodiment, the first intermediate magnet and the second intermediate magnet share the side magnet to form the magnetic circuits on both sides, which is simple and reasonable in structure.

[0024] In one possible implementation, the first peripheral washer, the second peripheral washer, the first basin stand, and the second basin stand are all ring structures, and the first peripheral washer is integrally formed on the first basin stand, and the second peripheral washer is integrally formed on the second basin stand.

[0025] In this embodiment, the first peripheral washer, the second peripheral washer, the first basin stand, and the second basin stand adopt a ring structure to facilitate their connection and coordination.

[0026] In one possible implementation, a first surface is recessed on both sides of the first protrusion along the length of the first sidewall to form a first groove, and a second surface is recessed on both sides of the second protrusion along the length of the second sidewall to form a second groove. The openings of the first and second grooves face each other and together form a receiving groove. A side magnet is respectively accommodated in each receiving groove.

[0027] In this embodiment, grooves are opened in the first and second side walls respectively to form a receiving groove for accommodating the side magnet. The structure is compact and reasonable, which is conducive to the miniaturization of the overall speaker structure.

[0028] In one possible implementation, notches are defined between the first connecting plate portion and the support tongue, and between the second connecting plate portion and the support tongue, respectively, and the side magnet passes through the support plate from the notch and extends to both sides of the support plate.

[0029] In this embodiment, a gap is provided to allow the side magnet to pass through, so that the side magnet is provided by two separate magnets, and it is beneficial to reduce the distance between the side magnet and the first / second intermediate magnet.

[0030] In one possible implementation, the portion of the first peripheral washer corresponding to the first groove is exposed above the bottom surface of the first groove, and the portion of the second peripheral washer corresponding to the second groove is exposed above the bottom surface of the second groove. The two end faces of the side magnet located in the receiving groove in the thickness direction are respectively fixedly attached to the first peripheral washer and the second peripheral washer.

[0031] In this embodiment, the first peripheral washer / second peripheral washer exposes the bottom surface of the first groove / second groove, which facilitates the connection between the first peripheral washer / second peripheral washer and the edge magnet.

[0032] In one possible implementation, the first washstand further includes two third sidewalls facing each other along a second direction, the two third sidewalls and the two first sidewalls being connected to form a rectangular frame-shaped first washstand. The second washstand includes two fourth sidewalls facing each other along a second direction; the two fourth sidewalls and the two second sidewalls being connected to form a rectangular frame-shaped second washstand.

[0033] In this embodiment, the third / fourth sidewall can provide some support for the first / second sidewall.

[0034] In one possible implementation, the first peripheral washer has two first side plates facing each other along a first direction, and the two first side plates are respectively embedded in two first side walls; a first bent plate portion is connected to the middle position of the length of the first side plate, the first bent plate portion includes a first bent section and a first extension section, the first bent section extends from the edge of the first side plate along the thickness direction of the first side wall to and does not exceed the first surface, and the first extension section extends from the portion of the first bent section corresponding to the first protrusion along the thickness direction of the first side wall into the first protrusion, and corresponds to the support tongue along the first direction. The second peripheral washer has two second side plates, which are opposite each other along a first direction and are respectively embedded in two second side walls. A second bent plate portion is connected to the middle position of the second side plate along its length. The second bent plate portion includes a second bent section and a second extension section. The second bent section extends from the edge of the second side plate along the thickness direction of the second side wall to the second surface without exceeding it. The second extension section extends from the portion of the second bent section corresponding to the second protrusion along the thickness direction of the second side wall into the second protrusion and corresponds to the support tongue along the first direction.

[0035] In this embodiment, the first bending plate portion / second bending plate portion of the first peripheral washer / second peripheral washer extends into the first protrusion / second protrusion of the first basin stand / second basin stand, thereby improving the integration of the first peripheral washer / second peripheral washer with the first basin stand / second basin stand, and enabling the support plate to support the first peripheral washer and the second peripheral washer along the first direction.

[0036] In one possible implementation, the frame assembly, the first diaphragm assembly, and the second diaphragm assembly together form an internal chamber. The internal chamber includes a first chamber and a second chamber. The first chamber is located on the side of the support plate corresponding to the first diaphragm assembly, and the second chamber is located on the side of the support plate corresponding to the second diaphragm assembly. The frame assembly has an opening connecting the internal chamber to the outside.

[0037] In this embodiment, the internal chamber can be connected to the outside through the channel opening, ensuring that airflow enters and exits the internal chamber when the first diaphragm assembly and the second diaphragm group vibrate.

[0038] In one possible implementation, the length of the first protrusion extending along the second direction is greater than the length of the second protrusion extending along the second direction.

[0039] This embodiment enables the support tongue to provide greater support to the first protrusion than to the second protrusion.

[0040] In one possible implementation, the support plate is made of stainless steel or SPCC.

[0041] In this embodiment, the support plate can be made of a material with relatively weak magnetic permeability, such as stainless steel or SPCC, to reduce the amount of magnetic circuit leakage outside the magnetic gap through the support plate.

[0042] In one possible implementation, the first diaphragm assembly includes a first diaphragm, a first voice coil, and a first swivel ring; the first diaphragm is connected to a first frame via the first swivel ring; the first voice coil is connected to the first diaphragm and engages with a magnetic gap. The second diaphragm assembly includes a second diaphragm, a second voice coil, and a second swivel ring; the second diaphragm is connected to a second frame via the second swivel ring; the second voice coil is connected to the second diaphragm and engages with a magnetic gap.

[0043] In this embodiment, sound can be generated by driving the first diaphragm / second diaphragm to vibrate through the first voice coil / second voice coil.

[0044] In one possible implementation, the basin frame assembly further includes two second sidewalls spaced apart along a second direction, the two second sidewalls and the two first sidewalls forming a rectangular frame structure, with the inner space located inside the rectangular frame structure; the length of the first sidewall is greater than the length of the second sidewall. A central magnet is supported at the midpoint of the length direction of the first sidewall.

[0045] In this embodiment, the basin frame assembly has a rectangular frame structure, and the length of the first side wall is greater than that of the second side wall, which is suitable for some installation scenarios. Furthermore, the support of the middle magnetic part to the middle position of the first side wall can compensate for the greater strength of the first side wall.

[0046] Secondly, embodiments of this application provide an electronic device that includes the aforementioned speaker.

[0047] The electronic device in this embodiment uses the aforementioned speaker, which also has the advantages of high structural strength and miniaturization.

[0048] In one possible implementation, the frame assembly, the first diaphragm assembly, and the second diaphragm assembly together form an internal cavity, and the frame assembly has a channel opening. The electronic device includes a mounting bracket, on which the speaker is mounted, and together with the mounting bracket, forms an external cavity, which communicates with the internal cavity through the channel opening.

[0049] In this embodiment, the external cavity is connected to the internal chamber through a channel opening, which facilitates providing airflow to the internal chamber or accommodating airflow flowing out of the internal chamber when the first diaphragm assembly and the second diaphragm assembly vibrate.

[0050] In one possible implementation, the electronic device is a laptop computer; the electronic device also includes a casing and a keyboard assembly; the speaker is disposed within the casing.

[0051] In this embodiment, the speaker is located inside the laptop's casing and can emit sound outwards through the casing. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a three-dimensional structural diagram of a loudspeaker according to an exemplary embodiment of this application;

[0054] Figure 2 for Figure 1 An unfolded view of the speaker;

[0055] Figure 3 for Figure 1 A cross-sectional view of the loudspeaker along line AA;

[0056] Figure 4 for Figure 1 A schematic diagram of the speaker frame assembly;

[0057] Figure 5 for Figure 1 A cross-sectional view of the speaker along line BB;

[0058] Figure 6 for Figure 5 A cross-sectional view of the loudspeaker along line DD;

[0059] Figure 7 for Figure 2 A magnified view of point C on the speaker;

[0060] Figure 8 This is a structural view of an electronic device according to an exemplary embodiment of this application;

[0061] Figure 9 for Figure 8 A schematic diagram of the speaker being mounted on the mounting bracket;

[0062] Figure 10 for Figure 9 Expanded view;

[0063] Figure 11 for Figure 9 A cross-sectional view along line EE.

[0064] Explanation of key component symbols:

[0065] Speaker 100

[0066] Sink stand assembly 1

[0067] First pot stand 1a

[0068] Second pot stand 1b

[0069] Magnetic circuit assembly 2

[0070] Intermediate magnetic part 2a

[0071] Peripheral magnetic section 2b

[0072] First diaphragm assembly 3

[0073] First vibrating diaphragm 3a

[0074] First voice coil 3b

[0075] First ring removal 3c

[0076] Second diaphragm assembly 4

[0077] Second diaphragm 4a

[0078] Second voice coil 4b

[0079] Second ring removal 4c

[0080] First side wall 11

[0081] First side wall 11a

[0082] Third sidewall 11b

[0083] Second sidewall 12

[0084] Second side wall 12a

[0085] Fourth sidewall 12b

[0086] First protrusion 13

[0087] Second protrusion 14

[0088] first convex portion 15

[0089] second convex portion 16

[0090] Support plate 20

[0091] Middle plate part 20a

[0092] First connecting plate 20b

[0093] Second connecting plate 20c

[0094] Support tongue 20d

[0095] First intermediate magnet 21

[0096] Second intermediate magnet 22

[0097] First Intermediate Company 23

[0098] Second Intermediate Waste 24

[0099] First Peripheral Company 25

[0100] First side plate 25a

[0101] First bending plate section 25b

[0102] The first bend is 25m long.

[0103] First extension section 25n

[0104] Second peripheral company 26

[0105] Second side plate 26a

[0106] Second bending plate section 26b

[0107] The second bend is 26m long.

[0108] Second extension 26n

[0109] Side magnet 27

[0110] Reception tank C10

[0111] First groove C1

[0112] Second groove C2

[0113] Magnetic gap f10

[0114] First magnetic gap f1

[0115] Second magnetic gap f2

[0116] Fit clearance f3

[0117] Through hole K1

[0118] Cut K2

[0119] Gap K3

[0120] K4 passageway

[0121] First surface P1

[0122] Second surface P2

[0123] Inner space Q10

[0124] Internal chamber Q20

[0125] First chamber Q1

[0126] Second chamber Q2

[0127] External cavity Q30

[0128] Width direction, first direction Y1

[0129] Length direction, second direction Y2

[0130] Thickness direction Y3

[0131] Electronic equipment 200

[0132] Casing 210

[0133] Mounting bracket 220

[0134] First mounting bracket 221

[0135] Second mounting bracket 222

[0136] Support base 223

[0137] Keyboard component 230 Detailed Implementation

[0138] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0139] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0140] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0141] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0142] Example

[0143] This application provides a speaker that can be installed in communication devices and electronic devices such as mobile phones, laptops, tablets, smartwatches, telephones, walkie-talkies, and music players to generate sound.

[0144] Figure 1 This is a three-dimensional structural diagram of a loudspeaker 100 according to an exemplary embodiment of this application.

[0145] See Figure 1 This application provides a loudspeaker 100, which is generally rectangular in shape with an aspect ratio (i.e., the ratio of the dimension along the length direction Y2 to the dimension along the width direction Y1) of approximately 2-3. The loudspeaker 100 is a bidirectional loudspeaker, meaning it has a sound-generating unit (hereinafter referred to as the first / second diaphragm assembly) on each side of the thickness direction Y3, used to vibrate and generate sound when energized. The two sound-generating units can adopt the same or similar structures and be symmetrically distributed on both sides of the loudspeaker 100 in the thickness direction Y3; alternatively, based on acoustic characteristics or other requirements, they can adopt significantly different structures and be arranged asymmetrically, which is not limited here.

[0146] In other embodiments, the loudspeaker 100 may also be configured in other shapes, such as an irregular cuboid, an elliptical cylinder, etc.; the aspect ratio of the loudspeaker 100 may also be set to be smaller or larger, such as between 1.5 and 2 or between 3 and 4.5 or other ranges, and the shape and size may be determined according to the acoustic performance requirements of the loudspeaker 100 and the installation space allowed by the electronic device 200.

[0147] Figure 2 for Figure 1 An unfolded view of the speaker 100. Figure 3 for Figure 1 A cross-sectional view of the loudspeaker 100 along line AA.

[0148] See also Figure 2 and Figure 3 The loudspeaker 100 includes a frame assembly 1, a magnetic circuit assembly 2, a first diaphragm assembly 3, and a second diaphragm assembly 4. The frame assembly 1 is mainly used to provide support, the magnetic circuit assembly 2 is mainly used to provide a magnetic circuit, and the first diaphragm assembly 3 and the second diaphragm assembly 4 are mainly used as the sound-generating units of the loudspeaker 100, which vibrate and generate sound under the action of the magnetic circuit assembly 2 when powered on.

[0149] Figure 4 for Figure 1 A schematic diagram of the frame assembly 1 of the loudspeaker 100.

[0150] See Figure 4 The speaker 100 has a generally rectangular frame structure, and the frame assembly 1 has two sides along the first direction Y1 (i.e., Figure 1 The width direction Y1) of the first sidewall 11 is spaced apart from each other and the two sidewalls along the second direction Y2 (i.e. Figure 1 The second sidewalls 12 are spaced apart along the length direction Y2). The basin assembly 1 defines an inner space Q10 between the two first sidewalls 11 and between the two second sidewalls 12.

[0151] The basin frame assembly 1 in this embodiment includes a first basin frame 1a and a second basin frame 1b, which are stacked and connected in the thickness direction Y3. The first basin frame 1a includes two first sidewalls 11a opposite each other along a first direction Y1 and two third sidewalls 11b opposite each other along a second direction Y2, forming a rectangular frame structure. The second basin frame 1b includes two second sidewalls 12a opposite each other along a first direction Y1 and two fourth sidewalls 12b opposite each other along a second direction Y2, forming a rectangular frame structure. The two first sidewalls 11a and two second sidewalls 12a are stacked along the thickness direction Y3 to form two first sidewalls 11 of the basin frame assembly 1; the two second sidewalls 12a and two fourth sidewalls 12b are stacked along the thickness direction Y3 to form two second sidewalls 12 of the basin frame assembly 1. For the rectangular frame structure of the basin assembly 1, the length of the first side wall 11 is greater than the length of the second side wall 12.

[0152] The surfaces of the first basin holder 1a and the second basin holder 1b are partially in contact and partially spaced apart. The first basin holder 1a and the second basin holder 1b can be fixedly connected by adhesive bonding of the contact surfaces. The space between the spaced surfaces can be used to accommodate other structures (such as part of the magnetic circuit assembly 2).

[0153] In other embodiments, the first basin stand 1a and the second basin stand 1b can also be connected by screws, snap-fit ​​or other means, or the first basin stand 1a and the second basin stand 1b can be directly integrally formed (e.g., integrally injection molded).

[0154] See Figure 2 or Figure 3 In this embodiment, the first diaphragm assembly 3 includes a first diaphragm 3a, a first voice coil 3b, and a first detachable ring 3c. The first diaphragm 3a is connected to the first frame 1a via the first detachable ring 3c; the first voice coil 3b is connected to the first diaphragm 3a. Similarly, the second diaphragm assembly 4 includes a second diaphragm 4a, a second voice coil 4b, and a second detachable ring 4c; the second diaphragm 4a is connected to the second frame 1b via the second detachable ring 4c; the second voice coil 4b is connected to the second diaphragm 4a. The first voice coil 3b / second voice coil 4b can be energized and move under the action of the magnetic circuit of the magnetic circuit assembly 2 to drive the first diaphragm 3a / second diaphragm 4a to vibrate and produce sound.

[0155] In this embodiment, the first diaphragm 3c is generally annular and can be fixed to the end face of the first frame 1a away from the second frame 1b by adhesive. The first diaphragm 3a is generally a thin sheet structure and is connected to the inner side of the first diaphragm 3c. One end of the first voice coil 3b is connected to the first diaphragm 3a, and the other end corresponds to the magnetic gap f10. The first diaphragm 3a and the first diaphragm 3c, as well as the first voice coil 3b and the first diaphragm 3a, can be connected together by adhesive. Similarly, the second diaphragm 4c is generally annular and can be fixed to the end face of the second frame 1b away from the second frame 1b by adhesive. The second diaphragm 4a is generally a thin sheet structure and is connected to the inner side of the second diaphragm 4c. One end of the second voice coil 4b is connected to the second diaphragm 4a, and the other end corresponds to the magnetic gap f10. The second diaphragm 4a and the second diaphragm 4c, as well as the second voice coil 4b and the second diaphragm 4a, can be connected together by adhesive.

[0156] In other embodiments, the specific structure / shape of the first diaphragm assembly 3 and the second diaphragm assembly 4 can be set as needed, as long as they can vibrate and produce sound under the action of a magnetic circuit when energized.

[0157] See Figure 2 and Figure 3 The magnetic circuit assembly 2 includes a central magnetic part 2a and a peripheral magnetic part 2b. The peripheral magnetic part 2b is fixedly connected to the frame assembly 1, and the central magnetic part 2a is located within the inner space Q10 enclosed by the frame assembly 1. The central magnetic part 2a and the peripheral magnetic part 2b are spaced apart to define a magnetic gap f10, which is used to cooperate with the first diaphragm assembly 3 and the second diaphragm assembly 4.

[0158] In this embodiment, the intermediate magnetic part 2a includes a support plate 20, a first intermediate magnet 21, a second intermediate magnet 22, a first intermediate washer 23, and a second intermediate washer 24. The first intermediate magnet 21 and the second intermediate magnet 22 are respectively fixedly connected to the two side surfaces of the support plate 20. The first intermediate washer 23 is connected to the side of the first intermediate magnet 21 away from the support plate 20, and the second intermediate washer 24 is connected to the side of the second intermediate magnet 22 away from the middle plate part 20a.

[0159] The support plate 20 is generally a plate-shaped structure, including a middle plate portion 20a, a first connecting plate portion 20b, a second connecting plate portion 20c, and a support tongue 20d.

[0160] The middle plate 20a is roughly a rectangular plate, and its shape and size are roughly the same as those of the first intermediate magnet 21 and the second intermediate magnet 22. The two sides are used to fix the first intermediate magnet 21 and the second intermediate magnet 22 respectively.

[0161] The first connecting plate portion 20b and the second connecting plate portion 20c are respectively connected to the two ends of the middle plate portion 20a along the second direction Y2, so that the support plate 20 is supported in the middle of the thickness direction Y3 of the frame assembly 1. Through holes K1 can be formed on the first connecting plate portion 20b and the second connecting plate portion 20c to allow some structures of the speaker 100 (such as the conductive lines of the first voice coil 3b or the second voice coil 4b, not shown in the diagram) to pass through. At the same time, the through hole K1 can also connect the spaces on both sides of the support plate 20, so that the reaction forces generated when the first diaphragm 3a and the second diaphragm 4a vibrate synchronously in opposite directions cancel each other out in the thickness direction Y3, reducing vibration noise that may exist in a single-sided speaker 100 or a structure without the through hole K1. One or more through holes K1 can be provided on the first connecting plate portion 20b and the second connecting plate portion 20c. In this embodiment, two through holes K1 are provided on both the first connecting plate portion 20b and the second connecting plate portion 20c. The provision of through holes K1 reduces the width of the connecting entity between the middle plate portion 20a and the first connecting plate portion 20b / second connecting plate portion 20c, thereby limiting the amount of magnetic circuit leakage from the middle plate portion 20a to the first connecting plate portion 20b / second connecting plate portion 20c and reducing the magnetic flux density loss in the magnetic gap f10.

[0162] In this embodiment, the support plate 20 can be positioned and engaged between the first basin stand 1a and the second basin stand 1b via the first connecting plate portion 20b and the second connecting plate portion 20c. For example Figure 2As shown, the first basin stand 1a has a first boss 13 at each of the four corners of the surface corresponding to the second basin stand 1b (defined as the first surface P1), and the second basin stand 1b has a second boss 14 at each of the four corners of the surface corresponding to the first basin stand 1a (defined as the second surface P2). Each first boss 13 and each second boss 14 corresponds one-to-one, and the sum of the thicknesses of the first boss 13 and each second boss 14 is equal to or approximately equal to the thickness of the support plate 20. The first connecting plate portion 20b and the second connecting plate portion 20c of the support plate 20 have cutouts K2 at positions corresponding to the first boss 13 and each second boss 14. In the assembled state, each first boss 13 and each second boss 14 is fitted together (e.g., bonded with adhesive), and the first connecting plate portion 20b and the second connecting plate portion 20c of the support plate 20 are sandwiched between the first surface P1 and the second surface P2. Each first boss 13 and each second boss extends into and engages with the corresponding cutout K2, achieving a positioning fit between the first support plate 20 and the basin stand assembly 1. The support plate 20 and the first surface P1 / second surface P2 can be configured to contact each other and be bonded with adhesive, or connected by screws / clamps or other connection methods, so that the first basin stand 1a, the second basin stand 1b and the support plate 20 are reliably fixed together in the assembled state. In other embodiments, the support plate 20 may also be fixed relative to only one of the first surface P1 and the second surface P2.

[0163] The support tongue 20d extends outward from the midpoint of the length direction Y2 (i.e., the second direction Y2) of both sides of the middle plate portion 20a in the first direction Y1, and is used to support the two first sidewalls 11 of the frame assembly 1 along the first direction Y1. The support tongue 20d is located between the first connecting plate portion 20b and the second connecting plate portion 20c, and can be set at the midpoint of the middle plate portion 20a in the second direction Y2, or slightly offset; the support tongue 20d can be provided only on one side, or multiple support tongues can be provided at intervals. The shape of the support tongue 20d can be set as needed, such as... Figure 2 The rectangle shown has chamfered edges on the support tongue 20d and the middle plate portion 20a to increase the connection strength between the support tongue 20d and the middle plate portion 20a.

[0164] See also Figure 2 In this embodiment, both first sidewalls 11a have a first surface P1 facing the second sidewall 12a and a first protrusion 15 protruding from the first surface P1; the second sidewall 12a has a second surface P2 facing the first sidewall 11a and a second protrusion 16 protruding from the second surface P2. See also: Figure 5 and Figure 6The first protrusion 15 and the second protrusion 16 are staggered along the extension direction of the first sidewall 11a or the second sidewall 12a (i.e., the second direction Y2). The middle magnetic part 2a supports the first protrusion 15 and the second protrusion 16 along the first direction Y1, respectively. In this embodiment, the width of the support tongue 20d along the second direction Y2 can be set to be approximately equal to the sum of the first protrusion 15 and the second protrusion 16. A part of the support tongue 20d directly abuts against and supports the first protrusion 15, and another part directly abuts against and supports the second protrusion 16, thereby simultaneously supporting the two first sidewalls 11a of the first basin stand 1a and the two second sidewalls 12a of the second basin stand 1b, reducing the deformation of the two first sidewalls 11a and the two second sidewalls 12a under stress.

[0165] In this embodiment, the first protrusion 15 is recessed from the inner side surface of the first sidewall 11a (the side surface near the inner space Q10), and the second protrusion 16 is recessed from the inner side surface of the second sidewall 12a (the side surface near the inner space Q10). The space between the two recessed positions forms a fitting gap f3 sandwiched between the first surface P1 and the second surface P2 (visible in...). Figure 4 or Figure 5 The support tongue 20d extends into the fitting gap f3 and fits between the first surface P1 and the second surface P2. For example, the total wall thickness (thickness dimension along the first direction Y1) of the first sidewall 11a / second sidewall 12a is set to 2.1mm, and the inner side surface of the first protrusion 15 / second protrusion 16 is recessed by 1.1mm from the inner side surface of the first sidewall 11a / second sidewall 12a to accommodate the support tongue 20d, leaving a remaining wall thickness of 1.0mm along the first direction Y1 for the first protrusion 15 / second protrusion 16. Thus, in addition to being supported and connected between the first basin stand 1a and the second basin stand 1b via the first connecting plate portion 20b and the second connecting plate portion 20c, the support plate 20 can also be supported and fitted with the first basin stand 1a and the second basin stand 1b via the support tongue 20d. Optionally, the two sides of the support tongue 20d are respectively bonded and fixed to the first basin stand 1a and the second basin stand 1b.

[0166] In this embodiment, the fit between the support tongue 20d and the first protrusions 15 / second protrusions 16 on both sides can be a contact fit, an interference fit, or a clearance fit. An interference fit, as described here, means that the support length of the support tongue 20d (equal to the distance between the opposing surfaces of the two support tongues 20d) is slightly greater than the distance between the two first protrusions 15 / second protrusions 16, such that under the support of the support tongue 20d, the two first sidewalls 11 receive an outward supporting force along the first direction Y1, which counteracts any inward magnetic force or other external forces that the first sidewalls 11 may experience. A clearance fit, as described here, means that there is a small gap between the support tongue 20d and the corresponding first protrusion 15 / second protrusion 16, thus allowing the first sidewalls 11 to undergo a small inward deformation before being supported by the support tongue 20d. The contact engagement mentioned here means that the support tongue 20d just contacts the first protrusion 15 / second protrusion 16, and there is no gap between the support tongue 20d and the first protrusion 15 / second protrusion 16, nor will the first protrusion 15 / second protrusion 16 deform outward.

[0167] Especially in embodiments like this one, where the intermediate magnetic part 2a and the outer magnetic part 2b are separated due to considerations such as magnetic circuit design, to minimize magnetic leakage caused by direct contact between the intermediate magnetic part 2a and the outer magnetic part 2b, and the outer magnetic part 2b is fixedly connected to the frame assembly 1 while the intermediate magnetic part 2a is located inside the frame assembly 1, the intermediate magnetic part 2a cannot directly support the outer magnetic part 2b. The magnetic attraction force of the intermediate magnetic part 2a on the outer magnetic part 2b acts on the frame assembly 1, which greatly increases the risk of inward deformation of the first frame 1a and the second frame 1b, especially for the first frame 1a and the second frame 1b made of materials with low strength / rigidity such as plastic. In embodiments with a high aspect ratio (e.g., aspect ratio greater than 2), the longitudinal middle position of the first side wall 11a and the second side wall 12a is particularly prone to deformation, affecting the overall performance of the speaker 100.

[0168] By adopting the structure in this embodiment, the speaker 100 can have high structural rigidity while maintaining a small structural thickness and minimizing magnetic leakage, greatly reducing the possibility of deformation of the frame assembly 1 under stress. Some known technologies can improve the structural rigidity of the frame assembly 1 to some extent by increasing the wall thickness (the dimension along the first direction Y1) or height (the dimension along the thickness direction Y3 of the frame assembly 1) of the first sidewall 11a / second sidewall 12a. However, this will increase the overall size and weight of the speaker 100, reducing product competitiveness, and may not be compatible with some electronic devices 200 with limited installation space or strict requirements on the size of the speaker 100, such as some thin mobile phones, tablets, and laptops.

[0169] In this embodiment, the support tongue 20d supports both the first basin stand 1a and the second basin stand 1b, resulting in good deformation consistency between the first basin stand 1a and the second basin stand 1b. In other embodiments, the support tongue 20d may directly support only one of the first basin stand 1a and the second basin stand 1b, and indirectly support the other through the cooperation between the first basin stand 1a and the second basin stand 1b.

[0170] See also Figure 2 and Figure 3 In this embodiment, the peripheral magnetic part 2b includes a first peripheral washer 25, a second peripheral washer 26, and a plurality of side magnets 27. The side magnets 27 are fixedly connected between the first peripheral washer 25 and the second peripheral washer 26 by adhesive or other means. The first peripheral washer 25 is connected to the first basin stand 1a, and the second peripheral washer 26 is connected to the second basin stand 1b. The specific connection method can be set as needed, such as by adhesive, screw connection, or direct integrated setting. The first peripheral washer 25 / second peripheral washer 26 can be set as a ring structure adapted to the first basin stand 1a / second basin stand 1b.

[0171] The device comprises two sets of edge magnets 27, each set containing one or more magnets, as shown in the figure. The thickness of each edge magnet 27 is greater than the thickness of the support plate 20, and each edge magnet 27 includes portions located on both sides of the support plate 20, corresponding to the first intermediate magnet 21 and the second intermediate magnet 22, respectively. The two sets of edge magnets 27 are spaced apart from the first intermediate magnet 21 along the first direction Y1 to define a first magnetic gap f1, used to engage with the first voice coil 3b of the first diaphragm assembly 3; the two sets of edge magnets 27 are also spaced apart from the second intermediate magnet 22 along the first direction Y1 to define a second magnetic gap f2, used to engage with the second voice coil 4b of the second diaphragm assembly 4. The aforementioned magnetic gap f10 includes the first magnetic gap f1 and the second magnetic gap f2.

[0172] The first surface P1 of the first sidewall 11a is recessed on both sides of the first protrusion 15 along the length direction Y2 (i.e., the second direction Y2) of the first sidewall 11a to form a first groove C1. The second surface P2 of the second protrusion 16 is recessed on both sides along the length direction Y2 of the second sidewall 12a to form a second groove C2. The openings of the first groove C1 and the second groove C2 are opposite to each other and together form a receiving groove C10 (see...). Figure 4 ).like Figure 4As shown, there are two receiving slots C10 on both sides of the basin frame assembly 1 in the first direction Y1, for accommodating two sets of four side magnets 27. Notches K3 are defined between the first connecting plate portion 20b and the support tongue 20d, and between the second connecting plate portion 20c and the support tongue 20d, respectively, to allow the side magnets 27 to pass through the support plate 20 from the notches K3 and extend to both sides of the support plate 20, respectively, to correspond to the first intermediate magnet 21 and the second intermediate magnet 22.

[0173] The side magnet 27 of this structure is set on the first peripheral washer 25 / second peripheral washer 26, instead of being installed together with the structure of the middle magnet 2a as in the common loudspeaker 100. This results in better magnetic circuit performance, but it also brings the problem that the first peripheral washer 25 / second peripheral washer 26 is more susceptible to deformation by magnetic attraction. This embodiment effectively solves this problem by supporting the first frame 1a / second frame 1b with the aforementioned support structure.

[0174] The inclusion of a receiving groove C10 in the frame assembly 1 to accommodate the side magnet 27 results in a compact overall structure, effectively limiting the size of the speaker 100. The reduced structural rigidity of the frame assembly 1 due to the receiving groove C10 is compensated for by the support plate 20 providing support for the first side wall 11a and the second side wall 12a. Simultaneously, reliable bonding between the side magnet 27 and the first frame 1a / second frame 1b improves the integration of the side magnet 27 and the frame assembly 1, thus compensating for the reduced structural rigidity of the frame assembly 1.

[0175] In this embodiment, the edge magnet 27, the first intermediate magnet 21, and the second intermediate magnet 22 can be made of neodymium iron boron, ferrite, or other magnetic materials; the first peripheral washer 25, the second peripheral washer 26, the first intermediate washer 23, and the second intermediate washer 24 can be made of hot-rolled steel plate (SPHC) or similar materials to ensure good magnetic permeability, which is beneficial for the magnetic circuits of the edge magnet 27, the first intermediate magnet 21, and the second intermediate magnet 22 to concentrate towards the magnetic gap f10 and reduce magnetic leakage to other locations; the support plate 20 can be made of stainless steel or cold-rolled steel plate (SPCC), which has weaker magnetic permeability than hot-rolled steel plate (SPHC) to reduce the leakage of the magnetic circuits of the first intermediate magnet 21 and the second intermediate magnet 22 through the support plate 20 through the magnetic gap f10 to the outside, so as to ensure the magnetic flux density in the magnetic gap f10.

[0176] The first washbasin holder 1a and the second washbasin holder 1b can be injection molded from plastic material. The first washbasin holder 1a, integral with the first peripheral washer 25, can be injection molded onto the first peripheral washer 25, and the second washbasin holder 1b, integral with the second peripheral washer 26, can be injection molded onto the second peripheral washer 26. In this case, to achieve the cooperation between the first peripheral washer 25 / second peripheral washer 26 and the side magnet 27, the corresponding surface of the first peripheral washer 25 / second peripheral washer 26 exposes the bottom surface of the first groove C1 / second groove C2. The two end faces of the side magnet 27 located in the receiving groove C10, in the thickness direction Y3, are respectively fixedly attached to the first peripheral washer 25 and the second peripheral washer 26.

[0177] See also Figure 2 and Figure 3 The first peripheral washer 25 has two first side plates 25a opposite each other along the first direction Y1, and the two first side plates 25a are respectively embedded in the two first side walls 11a. See also: Figure 2 and Figure 7The first side plate 25a is connected to the middle of the length direction by a first bent plate portion 25b that bends towards the second peripheral washer 26 to form a first bent plate portion 25b. The first bent plate portion 25b includes a first bent section 25m and a first extension section 25n. The first bent section 25m extends from the edge of the first side plate 25a along the thickness direction Y3 of the first side wall 11a to the first surface P1. The first extension section 25n extends from the portion of the first bent section 25m corresponding to the first protrusion 15 along the thickness direction Y3 of the first side wall 11a into the first protrusion 15 and corresponds to the support tongue 20d along the first direction Y1. Similarly, the second peripheral washer 26 has two second side plates 26a opposite each other along the first direction Y1, and the two second side plates 26a are respectively embedded in the two second side walls 12a; a second bent plate portion 26b is connected to the middle position of the second side plate 26a along the longitudinal direction, the second bent plate portion 26b includes a second bent section 26m and a second extension section 26n, the second bent section 26m extends from the edge of the second side plate 26a along the thickness direction Y3 of the second side wall 12a to the second surface P2, and the second extension section 26n extends from the part of the second bent section 26m corresponding to the second protrusion 16 along the thickness direction Y3 of the second side wall 12a into the second protrusion 16, and corresponds to the support tongue 20d along the first direction Y1. Thus, the first bent plate portion 25b / second bent plate portion 26b are embedded inside the first protrusion 15 / second protrusion 16, increasing the structural strength of the first sidewall 11a / second sidewall 12a at the first protrusion 15 / second protrusion 16 and reducing the possibility of the first protrusion 15 / second protrusion 16 deforming outward or even failing under the support of the support tongue 20d. At the same time, this structure also allows the support force of the support tongue 20d on the first basin stand 1a / second basin stand 1b to act along the first direction Y1 on the first peripheral washer 25 / second peripheral washer 26, avoiding excessive continuous stress at the joint (such as the bonding surface) between the first peripheral washer 25 / second peripheral washer 26 and the first basin stand 1a / second basin stand 1b, which could cause the first peripheral washer 25 / second peripheral washer 26 to detach from the joint of the first basin stand 1a / second basin stand 1b.

[0178] See also Figure 1 and Figure 3In this embodiment, the frame assembly 1, the first diaphragm assembly 3, and the second diaphragm assembly 4 together form an internal cavity Q20. The internal cavity Q20 includes a first cavity Q1 located on the side of the support plate 20 corresponding to the first diaphragm assembly 3, and a second cavity Q2 located on the side of the support plate 20 corresponding to the second diaphragm assembly 4. The frame assembly 1 has a channel opening K4 connecting the internal cavity Q20 to the outside. The position of the channel opening K4 can be set as needed; for example, in this embodiment, channel openings K4 are respectively opened on the two second side walls 12 of the frame assembly 1. When the first diaphragm assembly 3 / second diaphragm assembly 4 vibrates and produces sound, air can flow into / out of the internal cavity Q20 through the channel opening K4 to balance the air pressure between the internal cavity Q20 and the outside.

[0179] The loudspeaker 100 in this embodiment can be manufactured in the following manner:

[0180] The first basin stand 1a is injection molded on the first outer washer 25 to obtain an integral structure of the first basin stand 1a and the first outer washer 25; the integral structure is placed flat on an operating platform.

[0181] The middle magnetic part 2a is supported and connected to the first basin stand 1a, so that the cutout K2 of the support plate 20 of the middle magnetic part 2a fits into the first protrusion 15 of the first basin stand 1a to achieve positioning, and the support tongue 20d, the first connecting plate part 20b and the second connecting plate part 20c of the support plate 20 are respectively supported and connected to the first surface P1 of the first basin stand 1a.

[0182] The second basin frame 1b is injection molded on the second outer basin 26 to obtain an integral structure of the second basin frame 1b and the second outer basin 26, and the side magnet 27 is bonded and fixed on the second outer basin 26.

[0183] The combined structure of the second outer washer 26 and the second basin stand 1b is assembled onto the combined structure connecting the first basin stand 1a, the first outer washer 25 and the middle magnet 2a, so that the first basin stand 1a and the second basin stand 1b, the support plate 20 and the first basin stand 1a / second basin stand 1b, the side magnet 27 and the first basin stand 1a / second basin stand 1b, and the side magnet 27 and the first outer washer 25 are respectively bonded and fixed together;

[0184] The first diaphragm assembly 3 is bonded to the first basin frame 1a, and the second diaphragm assembly 4 is bonded to the second basin frame 1b.

[0185] In this manufacturing method, the applicant discovered that during the assembly process, the magnetic force exerted by the intermediate magnetic part 2a on the second peripheral washer 26 and the second basin frame 1b, which are connected first to the side magnet 27, is greater than the magnetic force exerted by the intermediate magnetic part 2a on the first peripheral washer 25 and the second basin frame 1b, which are connected later. Therefore, in this embodiment, the width of the second protrusion 16 on the second basin frame 1b in the second direction Y2 is slightly greater than the width of the first protrusion 15 on the first basin frame 1a in the second direction Y2. For example, see... Figure 6 The width of the second protrusion 16 on the second basin stand 1b in the second direction Y2 is set to b2 = 1.6 mm, the width of the first protrusion 15 on the first basin stand 1a in the second direction Y2 is set to b1 = 1.3 mm, and the width of the corresponding support tongue 20d is approximately b3 = 3.0 mm, covering the extension range of the first protrusion 15 and the second protrusion 16 in the second direction Y2.

[0186] The width of the portion of the first protrusion 15 that faces the support tongue 20d along the first direction Y1 is greater than the width of the portion of the second protrusion 16 that faces the support tongue 20d along the first direction Y1.

[0187] In summary, the speaker 100 in this embodiment supports the middle position of the basket assembly 1 in the second direction Y2 by setting the support plate 20, so that the first basket 1a / second basket 1b, the first peripheral washer 25 / second peripheral washer 26 can be set thinner while maintaining sufficient resistance to deformation, and can be used in occasions with small installation space or high size requirements.

[0188] For electronic devices 200 with limited installation space, such as thin mobile phones, tablets, and laptops, a thin speaker 100 is required. To improve the acoustic performance of the speaker 100 or for other reasons, known technologies have proposed bidirectional speakers 100 with large aspect ratios. These speakers have two sound-emitting units on opposite sides in the thickness direction Y3 and a large aspect ratio (e.g., the ratio of the length dimension to the width dimension is greater than 2). However, this further exacerbates the difficulty of balancing thickness and structural performance in the speaker 100. Using the aforementioned speaker 100, both thickness and structural performance can be balanced.

[0189] This application provides an electronic device 200 employing the aforementioned speaker 100. The electronic device 200 may be a mobile phone, laptop computer, tablet computer, smartwatch, etc. The electronic device 200 can supply power to the speaker 100 and control the current applied to the first voice coil 3b / second voice coil 4b of the speaker 100, causing the first voice coil 3b / second voice coil 4b to vibrate and produce sound in the magnetic circuit generated by the magnetic circuit assembly 2.

[0190] Figure 8This is a three-dimensional structural diagram of an electronic device 200 according to an exemplary embodiment of this application. The electronic device 200 is a laptop computer (the screen portion is hidden and not shown).

[0191] See Figure 8 The electronic device 200 includes a housing 210 and a keyboard assembly 230. The keyboard assembly 230 is disposed on the surface of the housing 210 for inputting characters; a speaker 100 is disposed inside the housing 210 for emitting sound. The number of speakers 100 can be set as needed; for example, the electronic device 200 (laptop) shown in the figure has two speakers 100.

[0192] See also Figures 8-11 The electronic device 200 also includes a mounting bracket 220 for mounting a speaker 100. Optionally, the mounting bracket 220 is disposed within a housing 210 to mount the speaker 100 within the housing 210. A sound hole (not shown) may be formed on the housing 210 as one of the pathways for the sound generated by the speaker 100 to propagate outwards. Optionally, the mounting bracket 220 includes a support base 223, a first mounting seat 221, and a second mounting seat 222. The support base 223 is fixedly connected to the housing 210, the first mounting seat 221 is mounted on the support base 223, and the second mounting seat 222 is fitted to the first mounting seat 221. The first mounting seat 221 and the second mounting seat 222 cooperate to form an external cavity Q30, the speaker 100 is supported between the first mounting seat 221 and the second mounting seat 222, and the speaker 100's channel opening K4 communicates with the speaker 100's internal cavity Q20 and the external cavity Q30. In use, the external cavity Q30 can be used to supply airflow into and out of the internal cavity Q20 when the speaker 100 vibrates.

[0193] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A loudspeaker, characterized in that, include: A basin stand assembly has two first sidewalls spaced apart and opposite each other along a first direction, defining an inner space between the two first sidewalls; the basin stand assembly includes a first basin stand and a second basin stand, the first basin stand and the second basin stand being stacked and connected; the first basin stand includes two first sidewalls opposite each other along the first direction, and the second basin stand includes two second sidewalls opposite each other along the first direction; the two first sidewalls and the two second sidewalls are respectively stacked to form two first sidewalls; the first sidewall has a first surface facing the second sidewall and a first protrusion protruding from the first surface; the second sidewall has a second surface facing the first sidewall and a second protrusion protruding from the second surface, wherein the first protrusion and the second protrusion are offset from each other along a second direction, the second direction being the extension direction of the first sidewall or the second sidewall; A first diaphragm assembly and a second diaphragm assembly, wherein the first diaphragm assembly is connected to the end of the first diaphragm frame away from the second diaphragm frame, and the second diaphragm assembly is connected to the end of the second diaphragm frame away from the first diaphragm frame; A magnetic circuit assembly includes a central magnetic part and a peripheral magnetic part; the peripheral magnetic part is fixedly connected to the frame assembly, the central magnetic part is located within the inner space, and the central magnetic part and the peripheral magnetic part are spaced apart to define a magnetic gap for cooperating with the first diaphragm assembly and the second diaphragm assembly; the central magnetic part is supported between two first protrusions along a first direction, and the central magnetic part is also supported between two second protrusions along a first direction. The intermediate magnetic part includes a support plate, which extends outward from both sides along a first direction to form support tongues. The support tongues are supported between two first protrusions along the first direction and between two second protrusions.

2. The loudspeaker according to claim 1, characterized in that: The first surface and the second surface are spaced apart from each other, and the support plate is fitted between the first surface and the second surface.

3. The loudspeaker according to claim 2, characterized in that: The first protrusion is recessed from the inner side of the first sidewall and the second protrusion is recessed from the inner side of the second sidewall to form a mating gap between the first surface and the second surface. The support tongue extends into the mating gap and engages between the first surface and the second surface.

4. The loudspeaker according to claim 3, characterized in that: The depth of the first protrusion is more than half the thickness of the first side wall, and the depth of the second protrusion is more than half the thickness of the second side wall.

5. The loudspeaker according to claim 3, characterized in that: The support tongue is fitted with either an interference fit or a clearance fit to the first sidewalls on both sides.

6. The loudspeaker according to claim 1, characterized in that: The support plate includes a middle plate and a support tongue, which extends outward from the middle position of the length direction of both sides of the middle plate in a first direction.

7. The loudspeaker according to claim 6, characterized in that: The support plate further includes a first connecting plate portion and a second connecting plate portion, the first connecting plate portion and the second connecting plate portion being respectively connected to both ends of the middle plate portion along a second direction, the second direction being perpendicular to the first direction; the support tongue is located between the first connecting plate portion and the second connecting plate portion; The first connecting plate portion is clamped between the first surface and the second surface, and the second connecting plate portion is clamped between the first surface and the second surface.

8. The loudspeaker according to claim 7, characterized in that: The intermediate magnetic part further includes a first intermediate magnet, a second intermediate magnet, a first intermediate washer, and a second intermediate washer; the first intermediate magnet and the second intermediate magnet are respectively fixedly connected to the two side plates of the middle plate, the first intermediate washer is connected to the side of the first intermediate magnet away from the middle plate, and the second intermediate washer is connected to the side of the second intermediate magnet away from the middle plate. The peripheral magnetic section includes a first peripheral washer, a second peripheral washer, and a side magnet; the first peripheral washer is connected to the first basin stand, and the second peripheral washer is connected to the second basin stand; the side magnet is fixedly connected between the first peripheral washer and the second peripheral washer. The side magnets are in two sets, and the two sets of side magnets are respectively spaced apart from the first middle magnet along the first direction to define a first magnetic gap for cooperating with the first diaphragm assembly; the two sets of side magnets are respectively spaced apart from the second middle magnet along the first direction to define a second magnetic gap for cooperating with the second diaphragm assembly; the magnetic gap includes the first magnetic gap and the second magnetic gap.

9. The loudspeaker according to claim 8, characterized in that: The thickness of the edge magnet is greater than the thickness of the support plate, and the edge magnet includes portions located on both sides of the support plate, which correspond to the first intermediate magnet and the second intermediate magnet, respectively.

10. The loudspeaker according to claim 8, characterized in that: The first peripheral washer, the second peripheral washer, the first basin stand, and the second basin stand are all ring structures, and the first peripheral washer is integrally formed on the first basin stand, and the second peripheral washer is integrally formed on the second basin stand.

11. The loudspeaker according to claim 8, characterized in that: The first surface is recessed on both sides of the first protrusion along the length direction of the first sidewall to form a first groove, and the second surface is recessed on both sides of the second protrusion along the length direction of the second sidewall to form a second groove. The openings of the first groove and the second groove are opposite to each other and together form a receiving groove; Each of the aforementioned receiving slots contains a side magnet.

12. The loudspeaker according to claim 11, characterized in that: A notch is defined between the first connecting plate portion and the support tongue, and between the second connecting plate portion and the support tongue, respectively. The side magnet passes through the support plate from the notch and extends to both sides of the support plate.

13. The loudspeaker according to claim 12, characterized in that: The portion of the first peripheral washer corresponding to the first groove is exposed above the bottom surface of the first groove, and the portion of the second peripheral washer corresponding to the second groove is exposed above the bottom surface of the second groove. The two end faces of the side magnet located in the receiving groove in the thickness direction are respectively fixedly attached to the first peripheral washer and the second peripheral washer.

14. The loudspeaker according to claim 8, characterized in that: The first basin stand also includes two third sidewalls opposite each other along a second direction, and the two third sidewalls and the two first sidewalls are connected to form a rectangular frame of the first basin stand; the second basin stand includes two fourth sidewalls opposite each other along a second direction; the two fourth sidewalls and the two second sidewalls are connected to form a rectangular frame of the second basin stand.

15. The loudspeaker according to claim 14, characterized in that: The first peripheral washer has two first side plates, which are opposite each other along a first direction and are respectively embedded in two first side walls. A first bent plate portion is connected to the middle position of the first side plate along its length. The first bent plate portion includes a first bent section and a first extension section. The first bent section extends from the edge of the first side plate along the thickness direction of the first side wall and does not exceed the first surface. The first extension section extends from the portion of the first bent section corresponding to the first protrusion along the thickness direction of the first side wall into the first protrusion and corresponds to the support tongue along the first direction. The second peripheral washer has two second side plates, which are opposite each other along a first direction and are respectively embedded in two second side walls. A second bent plate portion is connected to the middle position of the second side plate along its length. The second bent plate portion includes a second bent section and a second extension section. The second bent section extends from the edge of the second side plate along the thickness direction of the second side wall to the second surface without exceeding it. The second extension section extends from the portion of the second bent section corresponding to the second protrusion along the thickness direction of the second side wall into the second protrusion and corresponds to the support tongue along the first direction.

16. The loudspeaker according to claim 1, characterized in that: The frame assembly, the first diaphragm assembly, and the second diaphragm assembly together form an internal cavity. The internal cavity includes a first cavity and a second cavity. The first cavity is located on the side of the support plate corresponding to the first diaphragm assembly, and the second cavity is located on the side of the support plate corresponding to the second diaphragm assembly. The basin frame assembly has a channel opening connecting the internal chamber to the outside.

17. The loudspeaker according to claim 1, characterized in that: The length of the first protrusion extending along the second direction is greater than the length of the second protrusion extending along the second direction.

18. The loudspeaker according to claim 1, characterized in that: The support plate is made of stainless steel or SPCC.

19. The loudspeaker according to claim 1, characterized in that: The first diaphragm assembly includes a first diaphragm, a first voice coil, and a first detach ring; the first diaphragm is connected to the first frame via the first detach ring; the first voice coil is connected to the first diaphragm and engages with the magnetic gap; The second diaphragm assembly includes a second diaphragm, a second voice coil, and a second detach ring; the second diaphragm is connected to the second frame via the second detach ring; the second voice coil is connected to the second diaphragm and engages with the magnetic gap.

20. The loudspeaker according to any one of claims 1-19, characterized in that: The basin frame assembly further includes two second sidewalls spaced apart along a second direction, the two second sidewalls and the two first sidewalls forming a rectangular frame structure, the inner space being located inside the rectangular frame structure; the length of the first sidewall is greater than the length of the second sidewall. The intermediate magnet is supported at the middle position along the length of the first sidewall.

21. An electronic device, characterized in that, Includes the loudspeaker as described in any one of claims 1-20.

22. The electronic device according to claim 21, characterized in that: The frame assembly, the first diaphragm assembly, and the second diaphragm assembly together form an internal cavity, and the frame assembly has a channel opening; The electronic device also includes a mounting bracket, on which the speaker is mounted and together with the mounting bracket forms an external cavity, the external cavity being connected to the internal chamber through the channel opening.

23. The electronic device according to claim 21 or 22, characterized in that: The electronic device is a laptop computer; the electronic device also includes a casing and a keyboard assembly; the speaker is disposed within the casing.

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