Sound production monomer and electronic equipment

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and relates to a sounding monomer and electronic equipment, and the sounding monomer comprises a housing, and a vibration system and a magnetic circuit system which are fixedly connected to the housing. The vibration system comprises a vibrating diaphragm assembly, a first voice coil, a second voice coil and two centering disks, the vibrating diaphragm assembly is connected to the shell, the first voice coil and the second voice coil are arranged side by side, and the first voice coil and the second voice coil are both connected to the vibrating diaphragm assembly; the two centring disks are respectively arranged at two opposite ends of the shell, each centring disk comprises a first connecting part, a second connecting part and a vibrating arm connected between the first connecting part and the second connecting part, the first connecting part is connected with the shell, and the second connecting part is respectively connected with the first voice coil and the second voice coil; one second connecting part is provided with a spot welding pad, and the first voice coil and the second voice coil are electrically connected with the spot welding pad. The above structure can reduce the direct current resistance of the copper foil in the centering disk, reduce the impedance of the sounding monomer, and improve the tone quality effect of the sounding monomer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroacoustic conversion, and particularly relates to a sounding element and an electronic device. Background Art

[0002] With the advent of the mobile Internet era, the number of intelligent mobile devices has been increasing continuously. Among numerous mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. Currently, the functions of mobile phones are extremely diverse, and one of them is the high-quality music function. The miniature sounding device in a mobile phone is one of the necessary conditions to achieve this high-quality music function.

[0003] To meet the high-quality music function of intelligent mobile devices, in related technologies, two voice coils arranged side by side are set in a sounding element to improve its sound quality. However, how to realize the series connection of the two voice coils to make it have a smaller impedance is a technical problem that urgently needs to be solved currently.

[0004] Therefore, to solve the above technical problems, the present utility model is specifically proposed. Content of the Utility Model

[0005] The utility model provides a sounding element and an electronic device, aiming to realize the series connection of two voice coils and make it have a smaller impedance.

[0006] In the first aspect of the utility model, a sounding element is provided, which includes a housing, and a vibration system and a magnetic circuit system fixedly connected to the housing; the vibration system includes a diaphragm assembly, a first voice coil, a second voice coil, and two centering supports. The diaphragm assembly is connected to the housing. The first voice coil and the second voice coil are arranged side by side, and both the first voice coil and the second voice coil are connected to the diaphragm assembly.

[0007] Among them, the two centering supports are respectively arranged at opposite ends of the housing. Each centering support includes a first connecting portion, a second connecting portion, and a vibration arm connecting between the first connecting portion and the second connecting portion. The first connecting portion is connected to the housing, and the second connecting portion is respectively connected to the first voice coil and the second voice coil. A spot welding pad is provided on one of the second connecting portions. The first voice coil and the second voice coil are respectively electrically connected to the spot welding pad and are connected in series through the spot welding pad. A first pad and a second pad are provided on the other second connecting portion. The first voice coil is electrically connected to the first pad, and the second voice coil is electrically connected to the second pad.

[0008] The sounding element provided by the utility model may further have the following additional technical features:

[0009] In a specific embodiment of the present utility model, the magnetic circuit system includes a magnetic yoke, and a common magnetic part, a central magnetic part, and an edge magnetic part arranged on the same side of the magnetic yoke. Among them, there are two central magnetic parts, which are respectively arranged on both sides of the common magnetic part, and there are two edge magnetic parts, which are arranged outside the two central magnetic parts. One central magnetic part and the adjacent edge magnetic parts and the common magnetic part on both sides enclose a first magnetic gap for inserting the first voice coil, and the other central magnetic part and the adjacent edge magnetic parts and the common magnetic part on both sides enclose a second magnetic gap for inserting the second voice coil; the edge magnetic part is connected to the housing.

[0010] In a specific embodiment of the present utility model, the common magnetic part includes a common magnet and a common magnetic conductive plate stacked on the common magnet, the central magnetic part includes a central magnet and a central magnetic conductive plate stacked on the central magnet, the edge magnetic part includes an edge magnet and an edge magnetic conductive plate stacked on the edge magnet, and the edge magnetic conductive plate is connected to the housing.

[0011] In a specific embodiment of the present utility model, leakage holes are provided on and / or between the magnetic yoke and the housing. The magnetic circuit system further includes two steel meshes, which are respectively arranged at the two short-axis ends of the housing. The steel meshes cover the leakage holes, and the outer peripheries of the steel meshes are respectively connected to the housing and the magnetic yoke; and / or

[0012] Avoidance parts for avoiding the second connecting part are provided at both ends of the edge magnetic conductive plate.

[0013] In a specific embodiment of the present utility model, the sounding element is rectangular. The sounding element includes two short axes and two long axes that are alternately connected. The first voice coil and the second voice coil are arranged along the arrangement direction of the two long axes, and the two centering support pieces are arranged along the arrangement direction of the two short axes;

[0014] And / or, the housing is a metal housing.

[0015] In a specific embodiment of the present utility model, the second connecting part extends along the direction of the short-axis side and its two ends are respectively connected to the first voice coil and the second voice coil. Among them,

[0016] A spot welding pad is provided at a position of one second connecting part between the first voice coil and the second voice coil and corresponding to the common magnetic part;

[0017] And / or, a first pad and a second pad are provided at a position of the other second connecting part between the first voice coil and the second voice coil and corresponding to the common magnetic part;

[0018] And / or, both ends of the second connecting part are respectively connected to the first connecting part through one of the vibrating arms.

[0019] In a specific embodiment of the present utility model, the diaphragm assembly includes a diaphragm and a vibrating plate. The diaphragm includes an inner fixing part, a first folding ring part, a second folding ring part, and an outer fixing part that are sequentially connected from the inside to the outside. The recessed directions of the first folding ring part and the second folding ring part are opposite to each other. The inner fixing part is connected to the vibrating plate, and the outer fixing part is connected to the housing.

[0020] In a specific embodiment of the present utility model, the vibrating plate is connected to the side of the inner fixing part facing the magnetic circuit system. The first voice coil and the second voice coil are connected to the vibrating plate. Three protruding parts are arranged side by side along the long axis direction on the vibrating plate. One of the protruding parts is arranged between the first voice coil and the second voice coil, and the other two protruding parts are respectively located at the centers of the first voice coil and the second voice coil.

[0021] In a specific embodiment of the present utility model, the first voice coil includes a first lead-in end and a first lead-out end. The second voice coil includes a second lead-in end and a second lead-out end. The first lead-in end is connected to the first solder pad. The first lead-out end and the second lead-in end are connected to the spot-welding solder pad. The second lead-out end is connected to the second solder pad.

[0022] And / or, the number of the first connecting parts and the vibrating arms is two each. Both ends of the second connecting part are respectively connected to one of the first connecting parts through one of the vibrating arms.

[0023] And / or, the second connecting part includes an upper surface close to the diaphragm assembly. A recessed part is formed by the upper surface recessing downward at a position corresponding to the spot-welding solder pad.

[0024] In a second aspect of the present utility model, an electronic device is provided, including the sounding element described in any one of the above.

[0025] By providing a relative magnetic circuit system and a vibration system, the sounding element provided by the present utility model can drive the vibration system to vibrate and generate sound through the magnetic circuit system. At the same time, by arranging two centering supports in the vibration system and connecting them between the short axis ends of the first voice coil and the second voice coil and the housing, the polarization of the first voice coil and the second voice coil in the non-vibration direction can be reduced. In addition, by arranging a spot-welding solder pad in the middle of the second connecting part of the centering support, the first voice coil and the second voice coil can be electrically connected through the spot-welding solder pad. In this way, not only the series connection of the first voice coil and the second voice coil is realized, but also because the current transmission path on the spot-welding solder pad is short, the DC resistance of the copper foil of the centering support is reduced, the impedance of the sounding element is reduced, and the sound quality effect of the sounding element is improved. Description of the Drawings

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Schematic diagram of the three-dimensional structure of the sound generating element in the embodiment of the present invention;

[0028] Figure 2 For Figure 1 Schematic diagram of the three-dimensional structure of the sound generating element from another perspective in

[0029] Figure 3 For Figure 1 Exploded view of the sound generating element in

[0030] Figure 4 For Figure 1 Front view of

[0031] Figure 5 For Figure 1 Schematic diagram of the sectional structure of A-A in

[0032] Figure 6 Front view of other structures of the sound generating element except the diaphragm assembly.

[0033] Explanation of reference numerals:

[0034] 100 - Sound generating element;

[0035] 10 - Housing;

[0036] 20 - Vibration system, 21 - Diaphragm assembly, 22 - Diaphragm, 221 - Inner fixing part, 222 - First folding ring part, 223 - Second folding ring part, 224 - Outer fixing part, 23 - Vibration plate, 231 - Protrusion part, 24 - First voice coil, 25 - Second voice coil, 26 - Centering support piece, 261 - First connecting part, 262 - Second connecting part, 2621 - First welding pad, 2622 - Second welding pad, 263 - Vibration arm, 264 - Spot welding pad;

[0037] 30 - Magnetic circuit system, 31 - Magnetic yoke, 32 - Common magnetic part, 321 - Common magnet, 322 - Common magnetic plate, 33 - Central magnetic part, 331 - Central magnet, 332 - Central magnetic plate, 34 - Edge magnetic part, 341 - Edge magnet, 342 - Edge magnetic plate, 343 - Avoidance part, 35 - Steel mesh. Specific embodiments

[0038] Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be fully conveyed to those skilled in the art.

[0039] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or their combinations. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0040] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0041] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below" or "beneath" other elements or features will subsequently be oriented as "above" or "over" other elements or features. Thus, the example term "below" can include both the upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0042] Referring to Figure 1-6 , a first aspect of the present utility model provides a sounding element 100, which includes a housing 10, a vibration system 20 and a magnetic circuit system 30 fixedly connected to the housing 10; the vibration system 20 includes a diaphragm assembly 21, a first voice coil 24, a second voice coil 25 and two centering supports 26. The diaphragm assembly 21 is connected to the housing 10. The first voice coil 24 and the second voice coil 25 are arranged side by side, and both the first voice coil 24 and the second voice coil 25 are connected to the diaphragm assembly 21. Among them, the two centering supports 26 are respectively arranged at opposite ends of the housing 10. Each centering support 26 includes a first connecting portion 261, a second connecting portion 262 and a vibrating arm 263 connected between the first connecting portion 261 and the second connecting portion 262. The first connecting portion 261 is connected to the housing 10, and the second connecting portion 262 is respectively connected to the first voice coil 24 and the second voice coil 25. A spot welding pad 264 is provided on one second connecting portion 262. The first voice coil 24 and the second voice coil 25 are respectively electrically connected to the spot welding pad 264 and are connected in series through the spot welding pad 264. A first pad 2621 and a second pad 2622 are provided on the other second connecting portion 262. The first voice coil 24 is electrically connected to the first pad 2621, and the second voice coil 25 is electrically connected to the second pad 2622.

[0043] Specifically, the housing 10 is a hollow rectangular frame. The middle part of the housing 10 forms a receiving cavity. Along its central axis direction, the housing 10 has opposite first side and second side. The length direction of the housing 10 is the major axis of the sounding element 100, the width direction of the housing 10 is the minor axis of the sounding element 100, and the thickness direction of the housing 10 is the vibration direction of the vibration system 20 of the sounding element 100.

[0044] The magnetic circuit system 30 is connected to the first side of the housing 10, and the vibration system 20 is connected to the second side of the housing 10. Thus, the magnetic circuit system 30 and the vibration system 20 are disposed opposite to each other and can drive the vibration system 20 to vibrate and generate sound when the vibration system 20 is powered on.

[0045] The vibration system 20 specifically includes a diaphragm assembly 21, a first voice coil 24, a second voice coil 25, and two centering supports 26. Among them, the outer periphery of the diaphragm assembly 21 is connected to the second side of the housing 10; the first voice coil 24 and the second voice coil 25 are received in the receiving cavity in a manner that their long sides are parallel, and the first ends of the first voice coil 24 and the second voice coil 25 are connected to the diaphragm assembly 21, and the second ends are disposed corresponding to the magnetic circuit system 30. Thus, when powered on, they are driven by the magnetic circuit system 30 to drive the diaphragm assembly 21 to vibrate and generate sound. The two centering supports 26 are respectively located at the two shaft ends, and each centering support 26 includes a first connecting portion 261, a second connecting portion 262, and a vibrating arm 263 connected between the first connecting portion 261 and the second connecting portion 262. And the centering support 26 is connected to the short shaft end of the first side of the housing 10 through the first connecting portion 261, and is respectively connected to the short shaft sides of the second ends of the first voice coil 24 and the second voice coil 25 through the second connecting portion 262. Thus, the polarization of the first voice coil 24 and the second voice coil 25 in the non-vibration direction can be reduced.

[0046] A spot welding pad 264 is provided in the middle of one of the second connecting portions 262. The end wire of the first voice coil 24 and the start wire of the second voice coil 25 can be electrically connected to the spot welding pad 264 respectively. Thus, not only can the series connection of the first voice coil 24 and the second voice coil 25 be realized, but also since the spot welding pad 264 is provided in the middle of the second connecting portion 262, that is, at the middle position of the first voice coil 24 and the second voice coil 25, the current transfer path on the spot welding pad 264 can be reduced, thereby reducing the DC resistance of the copper foil of the centering support 26, reducing the impedance of the sound generating unit 100, and improving the sound quality effect of the sound generating unit 100.

[0047] A first pad 2621 and a second pad 2622 are provided on the other second connecting portion 262. The start wire of the first voice coil 24 is connected to the first pad 2621, and the end wire of the second voice coil 25 is electrically connected to the second pad 2622. Correspondingly, a third pad and a fourth pad are further provided on the side of the first connecting portion 261 facing away from the housing 10. The third pad is electrically connected to the first pad 2621, and the fourth pad is electrically connected to the first pad 2621. Thus, the power supply can be introduced into the sound generating unit 100 by connecting to the external circuit through the third pad and the fourth pad.

[0048] In the embodiment of the present utility model, the sounding element 100 is provided with a magnetic circuit system 30 and a vibration system 20 arranged opposite to each other. In this way, the vibration system 20 can be driven to vibrate and generate sound by the magnetic circuit system 30. At the same time, the vibration system 20 is provided with two centering support pieces 26, and they are connected between the short axis ends of the first voice coil 24 and the second voice coil 25 and the housing 10. In this way, the polarization of the first voice coil 24 and the second voice coil 25 in the non-vibration direction can be reduced. In addition, by providing a spot welding pad 264 in the middle of the second connection portion 262 of the centering support piece 26, the first voice coil 24 and the second voice coil 25 can be electrically connected through the spot welding pad 264. In this way, not only the series connection of the first voice coil 24 and the second voice coil 25 is realized, but also because the current transmission path on the spot welding pad 264 is short, the DC resistance of the copper foil of the centering support piece 26 is reduced, the impedance of the sounding element 100 is reduced, and the sound quality effect of the sounding element 100 is improved.

[0049] In a specific embodiment of the present utility model, the magnetic circuit system 30 includes a magnetic yoke 31, and a common magnetic part 32, a central magnetic part 33, and a side magnetic part 34 arranged on the same side of the magnetic yoke 31. Among them, there are two central magnetic parts 33, which are respectively arranged on both sides of the common magnetic part 32, and there are two side magnetic parts 34, which are arranged outside the two central magnetic parts 33. One central magnetic part 33 and the adjacent side magnetic parts 34 and the common magnetic part 32 enclose a first magnetic gap for the first voice coil 24 to be inserted, and the other central magnetic part 33 and the adjacent side magnetic parts 34 and the common magnetic part 32 enclose a second magnetic gap for the second voice coil 25 to be inserted; the side magnetic part 34 is connected to the housing 10.

[0050] Specifically, the common magnetic part 32, the central magnetic part 33, and the side magnetic part 34 are all strip-shaped. Among them, the common magnetic part 32 is arranged at the center of the magnetic yoke 31 with its length direction parallel to the long axis. The two central magnetic parts 33 are respectively arranged at intervals on both sides of the common magnetic part 32, and the two side magnetic parts 34 are arranged at intervals on both sides of the two central magnetic parts 33. The magnetic circuit system 30 is connected to the first side surface of the housing 10 through the side magnetic part 34. In this way, on the side surface of the vibration system 20 facing the diaphragm assembly 21, a first magnetic gap and a second magnetic gap can be formed and arranged in parallel and respectively surround the two central magnetic parts 33. The second end of the first voice coil 24 is inserted into the first magnetic gap, and the second end of the second voice coil 25 is inserted into the second magnetic gap. In this way, the magnetic field formed by the magnetic circuit system 30 can drive the first voice coil 24 and the second voice coil 25 to vibrate along the vibration direction when they are energized, so as to drive the diaphragm assembly 21 to vibrate and generate sound.

[0051] In a specific embodiment of the present utility model, the common magnetic part 32 includes a common magnet 321 and a common magnetic conductive plate 322 stacked on the common magnet 321. The central magnetic part 33 includes a central magnet 331 and a central magnetic conductive plate 332 stacked on the central magnet 331. The side magnetic part 34 includes a side magnet 341 and a side magnetic conductive plate 342 stacked on the side magnet 341. The side magnetic conductive plate 342 is connected to the housing 10.

[0052] Specifically, the outer contours of the common magnet 321 and the common magnetic conductive plate 322 are the same. The outer contours of the central magnet 331 and the central magnetic conductive plate 332 are the same. The outer contours of the side magnet 341 and the side magnetic conductive plate 342 in the long axis direction are substantially the same. And the side magnetic conductive plate 342 is connected to the first side surface of the housing 10.

[0053] In a specific embodiment of the present utility model, leakage holes are provided on the magnetic yoke 31 and / or between the magnetic yoke 31 and the housing 10. The magnetic circuit system 30 further includes two steel meshes 35. The two steel meshes 35 are respectively arranged at the two short axis ends of the housing 10. The steel meshes 35 cover the leakage holes, and the outer peripheries of the steel meshes 35 are respectively connected to the housing 10 and the magnetic yoke 31.

[0054] Specifically, leakage holes are provided on the magnetic yoke 31 and / or between the magnetic yoke 31 and the housing 10, and the sound pressure inside the sounding element 100 is adjusted through the leakage holes. The steel mesh 35 includes a fixed part and an enclosing part. The enclosing part is a U-shaped plate with a flared opening. The U-shaped plate is provided with ventilation holes. The flanging formed by bending the side edges of the enclosing part along the length direction is the fixed part. There are two steel meshes 35, which are respectively arranged at the two short axis ends and cover the leakage holes. And the fixed part of each steel mesh 35 is connected to the side surface of the magnetic yoke 31 facing away from the vibration system 20, and the other side edge of the enclosing part along the length direction abuts against the housing 10, and the two side edges along the width direction respectively abut against the short axis ends of the two side magnetic parts 34.

[0055] By providing the steel meshes 35, on the one hand, it is used to enclose the short axis ends of the magnetic circuit system 30, and on the other hand, it is also used to make the air inside and outside the housing 10 flow smoothly through the ventilation holes of the steel meshes 35 to reduce the influence on the vibration system 20.

[0056] In a specific embodiment of the present utility model, avoiding parts 343 for avoiding the second connecting part 262 are provided at both ends of the side magnetic conductive plate 342. Specifically, the avoiding part 343 is located on one side of the short axis end of the side magnetic conductive plate 342 close to the central magnetic part 33, so as to expand the space of the second connecting part 262 and the vibration arm 263, and further ensure the effect of the centering support piece 26.

[0057] In a specific embodiment of the present utility model, the sounding element 100 is rectangular. The sounding element 100 includes two short-axis sides and two long-axis sides that are alternately connected. The first voice coil 24 and the second voice coil 25 are arranged along the arrangement direction of the two long-axis sides, and the two centering support pieces 26 are arranged along the arrangement direction of the two short-axis sides. In this way, the long sides of the first voice coil 24 and the second voice coil 25 can be arranged in the magnetic field, thereby improving the utilization rate of the magnetic field.

[0058] In a specific embodiment of the present utility model, the housing 10 is a metal housing 10. In this way, the housing 10 can be used as a magnetic conduction structure to further increase the driving force factor BL value of the magnetic circuit system 30.

[0059] In a specific embodiment of the present utility model, the second connecting portion 262 extends along the direction of the short-axis side, and its two ends are respectively connected to the first voice coil 24 and the second voice coil 25. Among them, a spot welding pad 264 is provided at a position of one second connecting portion 262 that is between the first voice coil 24 and the second voice coil 25 and corresponds to the common magnetic portion 32. In this way, the current transmission path on the spot welding pad 264 can be reduced, thereby reducing the DC resistance of the copper foil of the centering support piece 26, reducing the impedance of the sounding element 100, and improving the sound quality effect of the sounding element 100. Further optionally, a first pad 2621 and a second pad 2622 are provided at a position of the other second connecting portion 262 that is between the first voice coil 24 and the second voice coil 25 and corresponds to the common magnetic portion 32. In this way, the current transmission path between the first pad 2621 and the second pad 2622 can be reduced, thereby reducing the DC resistance of the copper foil of the centering support piece 26, reducing the impedance of the sounding element 100, and improving the sound quality effect of the sounding element 100.

[0060] In a specific embodiment of the present utility model, the diaphragm assembly 21 includes a diaphragm 22 and a vibrating plate 23. The diaphragm 22 includes an inner fixing portion 221, a first folding ring portion 222, a second folding ring portion 223, and an outer fixing portion 224 that are sequentially connected from the inside to the outside. The recessed directions of the first folding ring portion 222 and the second folding ring portion 223 are opposite to each other. The inner fixing portion 221 is connected to the vibrating plate 23, and the outer fixing portion 224 is connected to the housing 10.

[0061] Specifically, the diaphragm 22 is formed into an annular structure, wherein the inner fixing portion 221 and the outer fixing portion 224 have a relative displacement in the direction of the central axis thereof through the first folding ring portion 222 and the second folding ring portion 223. Since the inner fixing portion 221 is connected to the vibration plate 23 and the outer fixing portion 224 is connected to the second side surface of the housing 10, the vibration plate 23 and the housing 10 have a relative displacement in the vibration direction. The outer periphery of the outer fixing portion 224 is also provided with a flange bent toward one side of the housing 10, so that the connection strength with the housing 10 can be further improved. By providing the first folding ring and the second folding ring, the range of the deformation area in the diaphragm 22 can be increased, and the relative position of the diaphragm 22 in the vibration direction can be increased. By making the first folding ring portion 222 and the second folding ring portion 223 respectively concave toward opposite sides, the height of the folding ring in the vibration direction can be reduced, and the thickness of the diaphragm assembly 21 and the sound-emitting monomer 100 can be reduced accordingly. The first folding ring portion 222 is recessed toward the magnetic circuit system 30 , and the second folding ring portion 223 is recessed away from the magnetic circuit system 30 , so as to avoid interference between the diaphragm 22 and the housing 10 when vibrating.

[0062] In a specific embodiment of the utility model, the vibration plate 23 is connected to the side of the inner fixing portion 221 facing the magnetic circuit system 30, and the first voice coil 24 and the second voice coil 25 are connected to the vibration plate 23; the vibration plate 23 is also provided with three protrusions 231 extending along the long axis direction and arranged side by side, one protrusion 231 is arranged between the first voice coil 24 and the second voice coil 25, and the other two protrusions 231 are respectively located at the center of the first voice coil 24 and the second voice coil 25.

[0063] By providing a protrusion 231 on the vibration plate 23, the strength of the vibration plate 23 can be improved, and the first voice coil 24 and the second voice coil 25 are connected to the outer periphery of the protrusion 231. This can avoid affecting the depth of the first voice coil 24 and the second voice coil 25 inserted into the first magnetic gap and the second magnetic gap due to the provision of the protrusion 231, thereby ensuring the performance of the sound unit 100.

[0064] In a specific implementation of the present invention, the number of the first connection part 261 and the number of the vibration arm 263 are both two, and the two ends of the second connection part 262 are respectively connected to one first connection part 261 through one vibration arm 263 .

[0065] Specifically, the two first connection parts 261 are spaced apart at the end of the short axis, one end of the vibration arm 263 is connected to the end of the first connection part 261 close to the center of the short axis, and the other end of the vibration arm 263 extends toward the edge of the short axis and is connected to the end of the second connection part 262, so that the length of the vibration arm 263 can be increased, thereby increasing its deformation range.

[0066] A connecting post is provided at the center of the short-axis end of the housing 10. A notch is provided in the middle of the steel mesh 35. The connecting post sequentially passes through the gaps between the two first connecting portions 261 and the notch of the steel mesh 35 to be connected to the magnetic yoke 31.

[0067] The third pad and the fourth pad are respectively provided on the two first connecting portions 261 of the same centering support piece 26.

[0068] In a specific embodiment of the present utility model, the second connecting portion 262 includes an upper surface close to the diaphragm assembly 21, and a recessed portion is formed by recessing downward at a position corresponding to the spot welding pad 264 on the upper surface. This can be used to indicate the welding positions of the leads of the first voice coil 24 and the second voice coil 25.

[0069] In a specific embodiment of the present utility model, two spot welding pads 264 are provided on the second connecting portion 262 of another centering support piece 26. One spot welding pad 264 is provided on the lower surface of each of the two first connecting portions 261 facing away from the diaphragm assembly 21, and the spot welding pad 264 located on the first connecting portion 261 is electrically connected to the spot welding pad 264 of one second connecting portion 262; the incoming wire of the first voice coil 24 is electrically connected to one spot welding pad 264 of the second connecting portion 262, and the outgoing wire of the second voice coil 25 is electrically connected to the other spot welding pad 264 of the second connecting portion 262, thus realizing the electrical connection between the sounding element 100 and the external structure.

[0070] In the second aspect of the present utility model, an electronic device is provided, including the sounding element 100 described in any one of the above. The structure of the sounding element 100 refers to the above embodiments. Since the electronic device has the sounding element 100 in all the above embodiments, it also has at least the beneficial effects of the above sounding element 100.

[0071] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A sounding monomer, characterized in that It includes a housing, a vibration system and a magnetic circuit system fixedly connected to the housing; the vibration system includes a diaphragm assembly, a first voice coil, a second voice coil and two centering supports, the diaphragm assembly is connected to the housing, the first voice coil and the second voice coil are arranged side by side, and both the first voice coil and the second voice coil are connected to the diaphragm assembly; Among them, the two centering supports are respectively arranged at opposite ends of the housing, and each centering support includes a first connecting portion, a second connecting portion and a vibrating arm connected between the first connecting portion and the second connecting portion. The first connecting portion is connected to the housing, and the second connecting portion is respectively connected to the first voice coil and the second voice coil; a spot welding pad is provided on one of the second connecting portions, the first voice coil and the second voice coil are respectively electrically connected to the spot welding pad and are connected in series through the spot welding pad, and a first pad and a second pad are provided on the other second connecting portion, the first voice coil is electrically connected to the first pad, and the second voice coil is electrically connected to the second pad.

2. The sounding element according to claim 1, wherein The magnetic circuit system includes a magnetic yoke, and a common magnetic part, a central magnetic part and a side magnetic part arranged on the same side of the magnetic yoke. Among them, there are two central magnetic parts, which are respectively arranged on both sides of the common magnetic part, and there are two side magnetic parts, which are arranged outside the two central magnetic parts. One central magnetic part and the adjacent side magnetic parts and the common magnetic part enclose a first magnetic gap for the first voice coil to be inserted, and the other central magnetic part and the adjacent side magnetic parts and the common magnetic part enclose a second magnetic gap for the second voice coil to be inserted; the side magnetic part is connected to the housing.

3. The sounding monomer according to claim 2, wherein The common magnetic part includes a common magnet and a common magnetic conductive plate stacked on the common magnet, the central magnetic part includes a central magnet and a central magnetic conductive plate stacked on the central magnet, the side magnetic part includes a side magnet and a side magnetic conductive plate stacked on the side magnet, and the side magnetic conductive plate is connected to the housing.

4. The sounding element according to claim 3, wherein Leakage holes are provided on the magnetic yoke and / or between the magnetic yoke and the housing. The magnetic circuit system further includes two steel meshes, the two steel meshes are respectively arranged at the two short-axis ends of the housing, the steel meshes cover the leakage holes, and the outer peripheries of the steel meshes are respectively connected to the housing and the magnetic yoke; and / or Avoidance portions for avoiding the second connecting portion are provided at both ends of the side magnetic conductive plate.

5. The sounding element according to claim 2, wherein The sounding element is rectangular, the sounding element includes two short-axis sides and two long-axis sides connected alternately, the first voice coil and the second voice coil are arranged along the arrangement direction of the two long-axis sides, and the two centering supports are arranged along the arrangement direction of the two short-axis sides; And / or, the housing is a metal housing.

6. The sounding element according to claim 5, wherein The second connecting portion extends along the direction of the short-axis side and its two ends are respectively connected to the first voice coil and the second voice coil. Among them, The spot welding pad is provided at a position of one of the second connecting portions that is between the first voice coil and the second voice coil and corresponds to the common magnetic part; And / or, the first pad and the second pad are provided at a position of the other second connecting portion between the first voice coil and the second voice coil and corresponding to the common magnetic portion; And / or, both ends of the second connecting portion are respectively connected to the first connecting portion through one of the vibrating arms.

7. The sounding monomer according to claim 1, wherein The diaphragm assembly includes a diaphragm and a vibrating plate. The diaphragm includes an inner fixing portion, a first folding portion, a second folding portion, and an outer fixing portion that are sequentially connected from the inside to the outside. The recessed directions of the first folding portion and the second folding portion are opposite to each other. The inner fixing portion is connected to the vibrating plate, and the outer fixing portion is connected to the housing.

8. The sounding element according to claim 7, characterized in that, The vibrating plate is connected to the side surface of the inner fixing portion facing the magnetic circuit system. The first voice coil and the second voice coil are connected to the vibrating plate. Three protruding portions are arranged side by side along the long axis direction on the vibrating plate. One of the protruding portions is arranged between the first voice coil and the second voice coil, and the other two protruding portions are respectively located at the centers of the first voice coil and the second voice coil.

9. The sounding element according to claim 1, wherein, The first voice coil includes a first lead-in end and a first lead-out end. The second voice coil includes a second lead-in end and a second lead-out end. The first lead-in end is connected to the first pad. The first lead-out end and the second lead-in end are connected to the spot welding pad. The second lead-out end is connected to the second pad; And / or, the number of the first connecting portions and the vibrating arms is two. Both ends of the second connecting portion are respectively connected to one of the first connecting portions through one of the vibrating arms; And / or, the second connecting portion includes an upper surface close to the diaphragm assembly, and a recessed portion formed by downward recessing at a position corresponding to the spot welding pad on the upper surface.

10. An electronic device, characterized in that, Including the sound generating element according to any one of claims 1-9.

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