Diaphragm, loudspeaker and electronic equipment

Abstract

The invention belongs to the technical field of sound energy conversion, and discloses a vibrating diaphragm, a loudspeaker and electronic equipment. The vibrating diaphragm comprises a folding ring part and a sealing body, and the sealing body is arranged around the folding ring part; the sealing body comprises an abutting portion and a first connecting portion which are connected, the included angle between the inner side face of the abutting portion and a dummy line parallel to the second direction is a first included angle a, the included angle between the outer side face of the abutting portion and the dummy line parallel to the second direction is a second included angle b, and the first included angle a is smaller than the second included angle b; the first connecting part is connected to the folding ring part, and the second direction is perpendicular to the axis direction of the sealing body. The vibrating diaphragm, the loudspeaker and the electronic equipment provided by the invention have better acoustic performance and higher waterproof performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound energy conversion, and in particular to a diaphragm, a loudspeaker and an electronic device. BACKGROUND

[0002] A loudspeaker is a sound energy conversion device, which is widely used in electronic devices such as mobile phones, computers and smart wearable products. With the improvement of the waterproof performance requirements of electronic devices, the waterproof performance requirements of loudspeakers are gradually improved.

[0003] In the prior art, a loudspeaker generally includes a shell, a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are both connected to the shell. The vibration system includes a diaphragm and a dome provided at the center region of the diaphragm, and the diaphragm is connected to the top of the shell. In order to improve the sealing and waterproof performance of the loudspeaker, a sealing ring is usually provided on the top surface of the shell. During the assembly process of the loudspeaker, the sealing ring is tightly abutted by the fixing surface of the electronic device, so as to realize the sealing and waterproof of the internal structure of the loudspeaker. In order to further improve the waterproof performance of the loudspeaker, the diaphragm is fixedly connected with the sealing ring, thereby ensuring the waterproof performance between the diaphragm and the sealing ring.

[0004] However, since the diaphragm is fixedly connected with the sealing ring, when the fixing surface applies pressure to the sealing ring during the assembly of the loudspeaker on the fixing surface of the electronic device, the sealing ring will move up and down relative to the shell, thereby driving the diaphragm to move up and down relative to the shell, thereby affecting the acoustic performance of the loudspeaker. SUMMARY

[0005] A first object of the present application is to provide a diaphragm to solve the technical problem of low acoustic performance caused by the movement of the diaphragm in the prior art.

[0006] A second object of the present application is to provide a loudspeaker with good acoustic performance.

[0007] A third object of the present application is to provide an electronic device with good sound quality.

[0008] As conceived above, the technical solution adopted by the present application is:

[0009] The diaphragm comprises:

[0010] a folded ring portion;

[0011] The sealing body is arranged around the folded ring portion; the sealing body comprises a connected pressing portion and a first connecting portion, an included angle between an inner side surface of the pressing portion and an imaginary line parallel to the second direction is a first included angle, an included angle between an outer side surface of the pressing portion and the imaginary line parallel to the second direction is a second included angle, the first included angle is smaller than the second included angle; the first connecting portion is connected to the folded ring portion, and the second direction is perpendicular to an axial direction of the sealing body.

[0012] In one of the embodiments, an area of the inner side surface of the pressing portion is greater than an area of the outer side surface of the pressing portion.

[0013] In one of the embodiments, the diaphragm further comprises a second connecting portion connected between the first connecting portion and the folded ring portion, and the second connecting portion is provided with a first groove.

[0014] In one of the embodiments, the diaphragm further comprises a folded edge portion located outside the folded ring portion and arranged in the second direction away from the folded ring portion.

[0015] In one of the embodiments, an end of the first connecting portion away from the pressing portion is provided with a protrusion extending in a first direction, and the first direction is an axial direction of the sealing body.

[0016] In one of the embodiments, an end surface of an end of the pressing portion away from the first connecting portion is an arc surface.

[0017] In one of the embodiments, the folded ring portion and the sealing body are in an integrated structure.

[0018] The loudspeaker comprises a shell, a magnetic circuit system and a vibration system, the magnetic circuit system is connected to the shell, and the magnetic circuit system is provided with a magnetic gap; the vibration system comprises a diaphragm and a voice coil for driving the diaphragm to vibrate, one end of the voice coil is connected to the diaphragm, and the other end is located in the magnetic gap.

[0019] The diaphragm comprises a folded ring portion and a sealing body connected to the shell, the sealing body is arranged around the folded ring portion; the sealing body comprises a connected pressing portion and a first connecting portion, an included angle between an inner side surface of the pressing portion and an imaginary line parallel to the second direction is a first included angle, an included angle between an outer side surface of the pressing portion and the imaginary line parallel to the second direction is a second included angle, the first included angle is smaller than the second included angle; the first connecting portion is connected to the folded ring portion, and the second direction is perpendicular to an axial direction of the sealing body.

[0020] In one embodiment, the surface of the shell facing the sealing body is provided with a first protrusion, the sealing body is provided with a second groove matching the first protrusion, and the first protrusion is located in the second groove; the surface of the sealing body facing the shell is connected to the surface of the shell facing the sealing body.

[0021] In one embodiment, the inner side surface of the shell is provided with a second protrusion, and the diaphragm also includes a second connecting portion, the second connecting portion is connected between the first connecting portion and the folding ring portion, and the second connecting portion is provided with a first groove that cooperates with the second protrusion; the second protrusion is located in the first groove.

[0022] In one embodiment, the diaphragm further includes a folded edge portion, which is located on the outside of the folded ring portion and is spaced apart from the folded ring portion in the second direction; and the folded edge portion is in contact with the inner side surface of the shell.

[0023] In one embodiment, a third groove is provided on the surface of the shell facing the sealing body, and a protrusion extending along the first direction is provided at the end of the first connecting portion away from the pressing portion, and the protrusion is arranged close to the outer side surface of the sealing body; the protrusion cooperates with the third groove, and the protrusion is located in the third groove; the first direction is the axial direction of the sealing body.

[0024] In one embodiment, the magnetic circuit system includes a magnetic circuit component, a magnetic conductive component and a centering support plate, the magnetic circuit component is provided with the magnetic gap, the magnetic conductive component is provided with a through hole, the voice coil is passed through the through hole, and the end of the voice coil facing away from the diaphragm is located in the magnetic gap, the centering support plate is provided between the magnetic conductive component and the magnetic circuit component, and one end of the centering support plate is electrically connected to the voice coil, and the other end is connected to the magnetic conductive component through a gasket.

[0025] In one embodiment, the centering support includes a fixed portion and an elastic arm that are fixedly connected, an electrical connection portion is formed on the elastic arm, the electrical connection portion is electrically connected to the voice coil, and the fixed portion is connected to the gasket.

[0026] An electronic device includes the diaphragm described above; or the electronic device includes the loudspeaker described above.

[0027] Beneficial effects of the present invention:

[0028] The diaphragm includes a folding ring portion and a sealing body, the sealing body includes a pressing portion and a first connecting portion, the angle between the inner side surface of the pressing portion and an imaginary line parallel to the second direction is a first angle, and the angle between the outer side surface of the pressing portion and an imaginary line parallel to the second direction is a second angle, the first angle being smaller than the second angle, so that an end of the pressing portion facing away from the first connecting portion is tilted outward, and when a mounting surface applies a force to the pressing portion of the sealing body, the pressing portion tilts in a direction away from the folding ring portion, that is, the pressing portion tilts in a direction away from the center of the sealing body. The tilting direction of the pressing portion causes the end of the pressing portion in contact with the mounting surface (or the end of the pressing portion facing away from the first connecting portion) to flip outward, and under the support of the loudspeaker housing, the displacement of the folding ring caused by the movement of the sealing body is small, or the folding ring is not displaced by the movement of the pressing portion of the sealing body, thereby ensuring that the mounting position of the folding ring meets the design requirements, ensuring the vibration amplitude and vibration frequency of the folding ring, and thereby improving the acoustic performance of the diaphragm. Furthermore, the pressing portion tilts when pressed, allowing for a larger contact area between the pressing portion and the mounting surface, thereby increasing the sealing area, improving the sealing effect, and effectively enhancing the waterproof performance. Loudspeakers using the diaphragm can have superior acoustic performance.

[0029] Furthermore, the pressing portion tilts after being pressed, so that a larger contact area can be formed between the pressing portion and the mounting surface of the electronic device, thereby increasing the sealing area, improving the sealing effect, and effectively improving the waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0031] Figure 1 is a structural diagram of a loudspeaker provided by an embodiment of the present invention;

[0032] Figure 2 is an exploded view of a loudspeaker provided in one embodiment of the present invention;

[0033] Figure 3 is a top view of a loudspeaker provided in one embodiment of the present invention;

[0034] Figure 4 An embodiment of the present invention provides Figure 3 AA section view shown;

[0035] Figure 5 An embodiment of the present invention provides Figure 4The enlarged view of point C is shown;

[0036] Figure 6 An embodiment of the present invention provides Figure 3 A partial enlarged view of the BB cross-sectional view shown;

[0037] Figure 7 is a schematic structural diagram of a diaphragm provided by an embodiment of the present invention;

[0038] Figure 8 is a cross-sectional view of a diaphragm provided by one embodiment of the present invention;

[0039] Figure 9 is a structural schematic diagram of a housing provided by an embodiment of the present invention;

[0040] Figure 10 is a cross-sectional view of a speaker in an exploded state provided by one embodiment of the present invention;

[0041] Figure 11 is a cross-sectional view of a loudspeaker provided by one embodiment of the present invention;

[0042] Figure 12 This is an exploded view of a centering support and a gasket provided in one embodiment of the present invention;

[0043] Figure 13 is a schematic diagram of the deformation of a sealing body provided by an embodiment of the present invention after being squeezed by a mounting surface;

[0044] Figure 14 It is a schematic diagram of the deformation of a sealing member after being squeezed by a mounting surface in the related art provided by one embodiment of the present invention.

[0045] In the picture:

[0046] 1. Diaphragm; 11. Folding ring; 12. Sealing body; 120. Pressing portion; 121. First connecting portion; 122. First inclined surface; 123. Second inclined surface; 124. Arc surface; 126. Protrusion; 127. Second groove; 13. Second connecting portion; 131. First groove; 14. Folding edge;

[0047] 10. Housing; 101. First protrusion; 102. Second protrusion; 103. Third groove;

[0048] 20. Magnetic circuit system; 201. Magnetic gap; 202. Magnetic circuit assembly; 2021. Magnet; 2022. Magnetic yoke; 203. Magnetic conductive assembly; 2030. Through hole; 2031. First magnetic conductive element; 2032. Second magnetic conductive element; 204. Centering support; 2041. Fixing portion; 2042. Elastic arm; 2043. Electrical connection portion; 205. Gasket;

[0049] 30. Vibration system; 31. Voice coil; 32. Vibration plate;

[0050] Z, first direction; X, second direction; L, imaginary line;

[0051] 100, seal; 200, mounting surface; 300, diaphragm structure; 400, frame. DETAILED DESCRIPTION

[0052] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0053] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0055] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0056] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature. In the description of the present embodiment, "a plurality of" specifically refers to two or more than two, unless otherwise specified.

[0057] In the description of the present embodiment, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0058] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element.

[0059] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0060] Figure 14 When the loudspeaker provided in the related technology in the present embodiment is installed in an electronic device, the deformation simulation of the seal 100 of the loudspeaker. When the mounting surface 200 of the electronic device extrudes the seal 100, the seal 100 is inclined towards the inside, and in turn drives the bezel 400 to be inclined towards the inside, and the displacement amount of the bezel 400 reaches 0.01mm. At the same time, the seal 100 also drives the diaphragm structure 300 to move downward, and the displacement amount of the diaphragm structure 300 reaches 0.02mm. In this way, the position of the diaphragm structure 300 deviates from the designed position, and in turn affects the acoustic performance such as the vibration amplitude and vibration frequency of the diaphragm structure 300.

[0061] In view of this, the present embodiment provides a diaphragm applied in a loudspeaker, which can have good acoustic performance.

[0062] Exemplarily, as shown in Figures 1 to 12 The diaphragm 1 includes a folded ring portion 11 and a sealing body 12. The folded ring portion 11 is connected with the sealing body 12. The folded ring portion 11 is annular, and in some optional embodiments, as shown in Figure 2 The folded ring portion 11 is in a runway shape. The sealing body 12 is arranged around the folded ring portion 11, and the sealing body 12 is connected between the mounting surface of the electronic device and the shell 10 of the loudspeaker for sealing.

[0063] As shown in Figures 3 to 5 The sealing body 12 includes a connected pressing portion 120 and a first connecting portion 121. The pressing portion 120 and the first connecting portion 121 are arranged in a first direction Z. An end of the pressing portion 120 away from the first connecting portion 121 is used to contact the mounting surface of the electronic device, that is, the end of the pressing portion 120 away from the first connecting portion 121 is the part of the sealing body 12 that first contacts the mounting surface 200 of the electronic device. The first direction Z is the height direction of the sealing body 12 or the axis direction of the sealing body 12.

[0064] In this embodiment, the pressing portion 120 and the first connecting portion 121 are both annular, and the pressing portion 120 has an inner side surface facing the folded ring portion 11 and an outer side surface away from the folded ring portion 11. As shown in Figure 5 The angle between the inner side surface of the pressing portion 120 and the virtual line L parallel to the second direction X is a first angle a, and the angle between the outer side surface of the pressing portion 120 and the virtual line L parallel to the second direction X is a second angle b, and the first angle a is smaller than the second angle b.

[0065] The second direction X is perpendicular to the first direction Z, for example, the second direction X can be the width direction of the sealing body 12, or the length direction of the sealing body 12, or a direction between the width direction and the length direction of the sealing body 12, and this embodiment is not limited in this regard.

[0066] It should be noted that the virtual line L is not a real line, but a line introduced for the purpose of describing the relationship between the inner side surface and the outer side surface of the pressing portion 120.

[0067] It should be further noted that the first angle a is the angle between the virtual line L and the inner side surface of the pressing portion 120, and therefore the first angle a is greater than 0 degrees and less than 90 degrees. The second angle b is the angle between the virtual line L and the outer side surface of the pressing portion 120, and therefore the second angle b is greater than 0 degrees and less than 90 degrees.

[0068] It should be further noted that the inner side surface of the pressing portion 120 is the surface of the pressing portion 120 facing the folded ring portion 11, and the outer side surface of the pressing portion 120 is the surface of the pressing portion 120 away from the folded ring portion 11.

[0069] By setting the first angle a to be smaller than the second angle b, the end of the pressing portion 120 away from the first connecting portion 121 is tilted outward. When the mounting surface 200 applies a force to the pressing portion 120 of the sealing body 12, the pressing portion 120 tilts in a direction away from the folding ring portion 11, that is, the pressing portion 120 tilts in a direction away from the center of the sealing body 12. For example, Figure 5 In the embodiment, the pressing portion 120 can be generated in Figure 5 The clockwise torque in the direction shown. The tilted direction of the pressing portion 120 causes the end of the pressing portion 120 in contact with the mounting surface 200 (or the end of the pressing portion 120 facing away from the first connecting portion 121) to flip outward. Under the support of the speaker housing 10, the displacement of the folding ring portion 11 due to the movement of the sealing body 12 is small, or the folding ring portion 11 will not be displaced due to the movement of the pressing portion 120 of the sealing body 12, thereby ensuring that the installation position of the folding ring portion 11 meets the design requirements, ensuring the vibration amplitude and vibration frequency of the folding ring portion 11, and thereby improving the acoustic performance of the diaphragm 1. In addition, the pressing portion 120 tilts after being compressed, so that there can be a larger contact area between the pressing portion 120 and the mounting surface 200, thereby increasing the sealing area, improving the sealing effect, and effectively improving the waterproof performance.

[0070] In some embodiments, the pressing portion 120 and the first connecting portion 121 may be an integral structure, that is, the sealing body 12 is an integral structure, which is artificially divided into the pressing portion 120 and the first connecting portion 121 for ease of understanding. Therefore, the dividing line between the pressing portion 120 and the first connecting portion 121 can be set according to actual needs. In other embodiments, the pressing portion 120 and the first connecting portion 121 may also be separate structures, which is not limited in this embodiment.

[0071] In at least one embodiment, Figure 5 As shown, the inner side of the pressing portion 120 is called the first inclined surface 122, and the outer side of the pressing portion 120 is called the second inclined surface 123. The area of ​​the first inclined surface 122 is greater than the area of ​​the second inclined surface 123. This arrangement allows the end of the pressing portion 120 facing away from the first connecting portion 121 to tilt outward. When the pressing portion 120 contacts the mounting surface 200, the first inclined surface 122 deforms with the pressing portion 120, so that at least a portion of the first inclined surface 122 contacts the mounting surface 200, thereby improving sealing performance.

[0072] Optionally, in this embodiment, the longitudinal cross-section of the sealing body 12 gradually increases in size from the abutting portion 120 toward the first connecting portion 121 .

[0073] In at least one embodiment, the end surface of the pressing portion 120 facing away from the first connecting portion 121 is a curved surface 124, which is used to contact the mounting surface 200, so that the surface area of ​​the pressing portion 120 in contact with the mounting surface 200 is larger, further improving the waterproof and sealing effects.

[0074] In one embodiment, the fold 11 and the sealing body 12 are integrally formed. The fold 11 and the sealing body 12 can be manufactured simultaneously in a single manufacturing process. For example, the fold 11 and the sealing body 12 can be manufactured by injection molding, 3D printing, or the like.

[0075] In order to achieve both the sealing effect and the vibration effect of the diaphragm 1, the material of the diaphragm 1 in this embodiment can be silicone, rubber or the like.

[0076] In some optional embodiments, such as Figure 4 or Figure 7 As shown, the diaphragm 1 further includes a second connecting portion 13. The second connecting portion 13 is connected between the first connecting portion 121 of the sealing body 12 and the folding ring portion 11. In this embodiment, as shown in FIG. Figure 8 As shown, the second connecting portion 13 is provided with a first groove 131, which is used to cooperate with the housing 10 of the speaker to improve the sealing effect and also improve the connection strength between the diaphragm 1 and the housing 10. By providing the second connecting portion 13, the relative position of the sealing body 12 and the ring portion 11 can be more flexible.

[0077] It should be noted that if Figure 4 As shown, the portion of the diaphragm 1 located on the end surface of one end of the housing 10 in the axial direction is the sealing body 12. That is, the sealing body 12 does not include the portion located inside the housing 10. The portion of the diaphragm 1 forming the U-shaped structure is the rim 11, and the portion located between the sealing body 12 and the rim 11 is the second connecting portion 13.

[0078] In at least one embodiment, Figure 5 or Figure 7 As shown, the diaphragm 1 also includes a folded edge portion 14 connected to the second connecting portion 13. The folded edge portion 14 is located on the outside of the folded ring portion 11, that is, the folded edge portion 14 is arranged on the side of the folded ring portion 11 away from the ring center. In addition, the folded edge portion 14 and the folded ring portion 11 are spaced apart in the second direction X. The folded edge portion 14 is used to contact the inner wall of the shell 10 to achieve support for the entire diaphragm 1 in the second direction X, reduce the probability of the sealing body 12 of the diaphragm 1 tilting inward under the pressure of the mounting surface 200, and thereby reduce the risk of the folded ring portion 11 being displaced in the first direction Z during the assembly process.

[0079] It should be noted that if Figure 7As shown, the second connecting portion 13 and the folded edge portion 14 in this embodiment are both annular, so as to have a higher supporting effect and the strength of the entire diaphragm 1 is also greater.

[0080] For example, the ring portion 11, sealing body 12, second connecting portion 13, and hem portion 14 in this embodiment can be an integrated structure. This improves the integrity of the diaphragm 1 and facilitates its assembly into the speaker. Furthermore, the diaphragm 1 itself has a high waterproof sealing performance, and only the sealing between the diaphragm 1 and other components needs to be improved.

[0081] In some optional embodiments, such as Figure 10 As shown, one end of the first connecting portion 121 away from the pressing portion 120 is provided with a protrusion 126 extending along the first direction Z. The protrusion 126 can be connected to the housing 10 , further reducing the risk of the diaphragm 1 tilting inward.

[0082] The structure of the diaphragm 1 provided in this embodiment is relatively simple, and can reduce the risk of the end of the pressing portion 120 away from the first connecting portion 121 tilting inward when assembled into an electronic device, reduce the displacement of the folding ring portion 11 in the first direction Z, ensure that the diaphragm 1 is located in the designed position, and thereby ensure the acoustic performance of the diaphragm 1 such as vibration amplitude and vibration frequency.

[0083] Figure 13 This is the deformation of the sealing body 12 provided in this embodiment after being subjected to the pressure of the mounting surface 200. Figure 13 It can be seen from the figure that the pressing portion 120 of the sealing body 12 is inclined toward the outside, and the housing 10 and the folding ring portion 11 do not produce obvious displacement in the first direction Z and the second direction X.

[0084] This embodiment also provides a speaker that has good acoustic performance.

[0085] For example, Figure 1 and Figure 2 As shown, the loudspeaker includes a housing 10, a magnetic circuit system 20, and a vibration system 30. The magnetic circuit system 20 is connected to the housing 10 and has a magnetic gap 201. The vibration system 30 includes the aforementioned diaphragm 1 and a voice coil 31 for driving the diaphragm 1 to vibrate. One end of the voice coil 31 is connected to the diaphragm 1, and the other end of the voice coil 31 is located within the magnetic gap 201. When energized, the voice coil 31 interacts with the magnetic circuit system 20, causing the voice coil 31 to vibrate in a first direction Z, thereby driving the diaphragm 1 to vibrate in the first direction Z and produce sound.

[0086] In this embodiment, for example, Figure 1As shown, the speaker has a long and narrow shape. It should be noted that the speaker has a height (thickness) along a first direction Z, and a length and width along a direction perpendicular to the first direction Z. The length of the speaker is greater than the width.

[0087] It should be noted that if Figure 4 As shown, the diaphragm 1 is installed on the top of the shell 10, and the magnetic circuit system 20 is installed on the bottom of the shell 10.

[0088] In this embodiment, the sealing body 12 is connected to the housing 10. For example, one end of the sealing body 12 in the first direction Z is connected to the housing 10. Furthermore, the end of the sealing body 12 facing away from the housing 10 in the first direction Z is configured to abut against the mounting surface 200. In this embodiment, the sealing body 12 is connected to the housing 10, and the fold 11 is disposed within the housing 10. The fold 11 is capable of vibrating and producing sound.

[0089] In at least one embodiment, Figure 5 As shown, the surface of the housing 10 facing the sealing body 12 is provided with a first convex portion 101. The first convex portion 101 is provided on an end surface of the housing 10 in the first direction Z. Figure 8 As shown, the sealing body 12 is provided with a second groove 127 that cooperates with the first protrusion 101. The first protrusion 101 is located in the second groove 127. By providing the second groove 127 and the first protrusion 101 that cooperate with each other, the first protrusion 101 can limit the position of the sealing body 12 in the second direction X, reducing the risk of the sealing body 12 moving in the second direction X when in contact with the mounting surface 200. In addition, the risk of the sealing body 12 driving the folding ring portion 11 to move in the second direction X is reduced, thereby ensuring the acoustic performance of the diaphragm 1.

[0090] In this embodiment, the surface of the sealing body 12 facing the housing 10, namely the first connecting portion 121, is sealedly connected to the housing 10. This arrangement improves the sealing effect between the sealing body 12 and the housing 10, and forms a multi-layer sealing structure with the first protrusion 101 and the second groove 127, further improving the waterproof and sealing effects, allowing the speaker to be used in electronic devices with high waterproof performance requirements.

[0091] It should be noted that, in this embodiment, the first protrusion 101 and the second groove 127 may both be annular in shape, so as to cooperate with each other to form a full-circle sealing structure.

[0092] In order to accommodate the shape of the diaphragm 1 , the housing 10 in this embodiment is annular, and the housing 10 has an inner side surface and an outer side surface that are opposite to each other in the second direction X. In at least one embodiment, as Figure 5 or Figure 9 As shown, the inner side of the housing 10 is provided with a second protrusion 102. Figure 8As shown, the second connecting portion 13 of the diaphragm 1 is provided with a first groove 131 that matches the second convex portion 102 . The second convex portion 102 is located in the first groove 131 .

[0093] By providing the mutually cooperating first groove 131 and second protrusion 102, on the one hand, the second protrusion 102 can support the second connecting portion 13 in the first direction Z, thereby achieving support for the diaphragm 1 in the first direction Z. Since the second protrusion 102 is provided on the inner side surface of the housing 10, the support of the second protrusion 102 can prevent the pressing portion 120 from tilting inward, allowing the pressing portion 120 to tilt smoothly outward. Furthermore, under the restriction of the second protrusion 102, the second connecting portion 13 will move along the first direction Z, thereby preventing the folding ring portion 11 from moving in the first direction Z, thereby ensuring the position of the folding ring portion 11 relative to the housing 10 and thus ensuring the acoustic performance of the diaphragm 1. On the other hand, the mutual cooperation between the second protrusion 102 and the first groove 131 can also enhance the sealing effect between the diaphragm 1 and the housing 10.

[0094] In some optional embodiments, the second connecting portion 13 is connected to the inner side surface of the shell 10 , and together with the second protrusion 102 and the first groove 131 , a double sealing structure can be formed to further enhance the sealing effect between the diaphragm 1 and the shell 10 .

[0095] In at least one embodiment, when the diaphragm 1 includes a folded edge portion 14, the folded edge portion 14 contacts the inner side surface of the housing 10. The provision of the folded edge portion 14 can, on the one hand, support the folded ring portion 11 in the second direction X, reducing the risk of the folded ring portion 11 moving and deforming in the second direction X. On the other hand, the folded edge portion 14 can also support the second connecting portion 13, reducing the risk of the second connecting portion 13 moving inward, further reducing the risk of the pressing portion 120 tilting inward after being pressed, thereby ensuring that one end of the pressing portion 120 tilts smoothly outward.

[0096] Alternatively, as Figure 5 As shown, the hem portion 14 can also contact the second convex portion 102. The hem portion 14 can be connected to or not connected to the second convex portion 102. In this arrangement, the second convex portion 102 can support the hem portion 14, reducing the risk of the hem portion 14 moving relative to the second convex portion 102 in the first direction Z.

[0097] In some implementations, the folded edge portion 14 may be fixedly connected to the inner side surface of the shell 10 ; in other embodiments, the folded edge portion 14 fits tightly against the inner side surface of the shell 10 , which is not limited in this embodiment.

[0098] The longitudinal section of the folded edge portion 14 in this embodiment is in an inverted “L” shape, and the folded edge portion 14 extends in a direction away from the second protrusion 102 .

[0099] In at least one possible embodiment, Figure 10 and Figure 11 As shown, the surface of the housing 10 facing the sealing body 12 is provided with a third groove 103, and the end of the first connecting portion 121 facing the housing 10 is provided with a protrusion 126 extending along the first direction Z. The protrusion 126 is provided near the outer side surface of the sealing body 12, that is, the distance between the protrusion 126 and the outer side surface of the sealing body 12 is smaller than the distance between the protrusion 126 and the inner side surface of the sealing body 12. The protrusion 126 cooperates with the third groove 103, and the protrusion 126 is located in the third groove 103.

[0100] Through the mutual cooperation between the protrusion 126 and the third groove 103, on the one hand, the supporting force of the shell 10 on the outer side of the sealing body 12 will be weakened, which is conducive to the outward tilting of one end of the sealing body 12; on the other hand, the setting of the protrusion 126 and the third groove 103 can also limit the position of the sealing body 12 relative to the shell 10, and at the same time can improve the waterproof sealing performance of the sealing body 12 and the shell 10.

[0101] Optionally, the protrusion 126 in this embodiment is annularly arranged on the sealing body 12 , and the third groove 103 is also annularly matched with the protrusion 126 .

[0102] In some optional embodiments, the outer side surface of the protrusion 126 in the second direction X is flush with the outer side surface of the sealing body 12 to facilitate the arrangement of the protrusion 126. The protrusion 126 and the sealing body 12 can be an integral structure.

[0103] Alternatively, as Figure 10 As shown, the third groove 103 is provided on a side of the first protrusion 101 away from the voice coil 31 .

[0104] In some optional embodiments, such as Figure 2 As shown, the diaphragm 1 further includes a vibration plate 32 , which is connected to the central area of ​​the folding ring portion 11 , and the voice coil 31 is connected to the vibration plate 32 to drive the vibration plate 32 to vibrate and produce sound.

[0105] The specific structure of the magnetic circuit system 20 can be various. This embodiment provides a magnetic circuit system 20, for example, Figure 2As shown, the magnetic circuit system 20 includes a magnetic circuit assembly 202, a magnetic conductive assembly 203, and a centering support 204, all of which are disposed within the housing 10. The magnetic circuit assembly 202 is provided with a magnetic gap 201. The magnetic conductive assembly 203 is provided with a through hole 2030, through which the voice coil 31 is disposed, and the end of the voice coil 31 facing away from the diaphragm 1 is located within the magnetic gap 201. The centering support 204 is disposed between the magnetic conductive assembly 203 and the magnetic circuit assembly 202. One end of the centering support 204 is electrically connected to the voice coil 31, and the other end of the centering support 204 is fixedly connected to the magnetic conductive assembly 203 via a gasket 205. The centering support 204 is used to reduce the probability of polarization of the voice coil 31, thereby improving the vibration stability of the voice coil 31, and thereby improving the vibration stability of the diaphragm 1, thereby ensuring the acoustic performance of the speaker. In this embodiment, the centering support piece 204 is fixed to the magnetic conductive component 203 via the gasket 205 , so that the gasket 205 can provide an elastic support point for the centering support piece 204 , which is beneficial to the centering effect of the centering support piece 204 .

[0106] In at least one embodiment, Figure 12 As shown, the centering arm 204 includes a fixed portion 2041 and an elastic arm 2042 that are fixedly connected. The fixed portion 2041 is connected to the gasket 205, and the elastic arm 2042 is suspended between the magnetic circuit assembly 202 and the magnetic conductive assembly 203. The elastic arm 2042 is capable of elastic deformation relative to the fixed portion 2041, thereby reducing polarization of the voice coil 31. The elastic arm 2042 is formed with an electrical connection portion 2043, which is electrically connected to the voice coil 31 and the external circuit, thereby achieving electrical communication between the external circuit and the voice coil 31.

[0107] There are various implementations of the centering support 204. In one embodiment, the centering support 204 can be supported by a flexible printed circuit board, with the non-conductive portion of the flexible printed circuit board connected to the spacer 205, and the conductive portion of the flexible printed circuit board electrically connected to the voice coil 31 and the external circuit. In other embodiments, the centering support 204 is primarily made of plastic with a conductive layer disposed therein, the plastic being fixedly connected to the spacer 205, and the conductive layer being electrically connected to the voice coil 31.

[0108] In one embodiment, see Figure 2 Figure 2 The magnetic circuit assembly 202 includes a plurality of magnets 2021 and at least one magnetic yoke 2022. The magnets 2021 are disposed on the magnetic yoke 2022, and the magnetic yoke 2022 is disposed on the side of the magnets 2021 facing away from the magnetic guide assembly 203. The plurality of magnets 2021 are spaced apart in sequence, and a magnetic gap 201 is formed between two adjacent magnets 2021.

[0109] In one embodiment, the magnetic conductive assembly 203 includes a first magnetic conductive body 2031 and a second magnetic conductive body 2032. The second magnetic conductive body 2032 is annular. The first magnetic conductive body 2031 is disposed in the center of the second magnetic conductive body 2032. A through hole 2030 is formed between the first magnetic conductive body 2031 and the second magnetic conductive body 2032. The gasket 205 is fixedly connected to the second magnetic conductive body 2032.

[0110] This embodiment further provides an electronic device. In one embodiment, the electronic device includes the diaphragm 1 described above. In another embodiment, the electronic device includes the speaker described above. The electronic device provided by this embodiment has high acoustic performance and good sound effects.

[0111] For example, the electronic device may be a computer, a mobile phone, a smart wearable device, etc.

[0112] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A diaphragm, characterized in that include: Ring part; A sealing body, the sealing body is arranged around the folding ring portion; the sealing body includes a connected pressing portion and a first connecting portion, the angle between the inner side surface of the pressing portion and the imaginary line parallel to the second direction is a first angle, the angle between the outer side surface of the pressing portion and the imaginary line parallel to the second direction is a second angle, the first angle is smaller than the second angle; the first connecting portion is connected to the folding ring portion, and the second direction is perpendicular to the axial direction of the sealing body.

2. The diaphragm according to claim 1, wherein The area of ​​the inner side surface of the pressing portion is larger than the area of ​​the outer side surface of the pressing portion.

3. The diaphragm according to claim 1, wherein The diaphragm further includes a second connecting portion connected between the first connecting portion and the folding ring portion, and the second connecting portion is provided with a first groove.

4. The diaphragm according to claim 1 or 2, characterized in that: The diaphragm further includes a folded edge portion, which is located outside the folded edge portion and is spaced apart from the folded edge portion in the second direction.

5. The diaphragm according to claim 1 or 2, characterized in that: An end of the first connecting portion facing away from the pressing portion is provided with a protrusion extending along a first direction, and the first direction is the axial direction of the sealing body.

6. The diaphragm according to claim 1 or 2, characterized in that: An end surface of the pressing portion facing away from one end of the first connecting portion is an arc surface.

7. The diaphragm according to claim 1 or 2, characterized in that: The folding ring portion and the sealing body are an integrated structure.

8. A loudspeaker, characterized in that The invention comprises a housing, a magnetic circuit system, and a vibration system, wherein the magnetic circuit system is connected to the housing and has a magnetic gap; the vibration system comprises a diaphragm and a voice coil for driving the diaphragm to vibrate, wherein one end of the voice coil is connected to the diaphragm and the other end is located in the magnetic gap; The diaphragm includes a folding ring portion and a sealing body connected to the shell, and the sealing body is arranged around the folding ring portion; the sealing body includes a connected pressing portion and a first connecting portion, the angle between the inner side surface of the pressing portion and the imaginary line parallel to the second direction is the first angle, and the angle between the outer side surface of the pressing portion and the imaginary line parallel to the second direction is the second angle, and the first angle is smaller than the second angle; the first connecting portion is connected to the folding ring portion, and the second direction is perpendicular to the axial direction of the sealing body.

9. The loudspeaker according to claim 8, characterized in that The surface of the shell facing the sealing body is provided with a first protrusion, the sealing body is provided with a second groove matching the first protrusion, and the first protrusion is located in the second groove; the surface of the sealing body facing the shell is connected to the surface of the shell facing the sealing body.

10. The loudspeaker according to any one of claims 8 to 9, characterized in that: The inner side surface of the shell is provided with a second protrusion, and the diaphragm also includes a second connecting part, which is connected between the first connecting part and the folding ring part, and the second connecting part is provided with a first groove that matches the second protrusion; the second protrusion is located in the first groove.

11. The loudspeaker according to any one of claims 8 to 9, characterized in that: The diaphragm further includes a folded edge portion, which is located outside the folded ring portion and spaced apart from the folded ring portion in the second direction; the folded edge portion is in contact with the inner side surface of the shell.

12. The loudspeaker according to any one of claims 8 to 9, characterized in that: A third groove is provided on the surface of the shell facing the sealing body, and a protrusion extending along the first direction is provided at one end of the first connecting portion away from the pressing portion, and the protrusion is arranged close to the outer side surface of the sealing body; the protrusion cooperates with the third groove, and the protrusion is located in the third groove; the first direction is the axial direction of the sealing body.

13. The loudspeaker according to any one of claims 8 to 9, characterized in that: The magnetic circuit system includes a magnetic circuit component, a magnetic conductive component and a centering support plate. The magnetic circuit component is provided with the magnetic gap. The magnetic conductive component is provided with a through hole. The voice coil is passed through the through hole, and one end of the voice coil facing away from the diaphragm is located in the magnetic gap. The centering support plate is provided between the magnetic conductive component and the magnetic circuit component, and one end of the centering support plate is electrically connected to the voice coil, and the other end is connected to the magnetic conductive component through a gasket.

14. The loudspeaker according to claim 13, wherein The centering support includes a fixed portion and an elastic arm that are fixedly connected. An electrical connection portion is formed on the elastic arm. The electrical connection portion is electrically connected to the voice coil, and the fixed portion is connected to the gasket.

15. An electronic device, characterized in that The electronic device comprises the diaphragm according to any one of claims 1 to 7; or the electronic device comprises the loudspeaker according to any one of claims 8 to 14.

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