Centering disk, loudspeaker and electronic equipment

Abstract

The utility model provides a centering disk, a loudspeaker and electronic equipment. The loudspeaker comprises a shell, a magnetic circuit assembly, a vibrating diaphragm, a voice coil and a centering disk. The magnetic circuit assembly and the vibrating diaphragm are fixedly connected with the shell. One end of the voice coil is fixedly connected with the diaphragm, and the other end is located in the magnetic gap of the magnetic circuit assembly. In the extending direction of the centering disk, the centering disk comprises a first end, a connecting part and a second end which are connected in sequence. The first end is fixedly connected with the housing, and the second end is fixedly connected with the voice coil. In the thickness direction of the centring disk, the centring disk comprises a first insulating layer, a conductive layer and a second insulating layer which are stacked in sequence. The conductive layer is electrically connected with the voice coil. The centring disk further comprises a first reinforcing layer which is fixed on one side, back to the conductive layer of the connecting part, of the second insulating layer of the connecting part. The rigidity of the first reinforcing layer is greater than that of the conductive layer. The centering disk of the loudspeaker has both conductivity and better rigidity, so that the long-term stability and low-frequency acoustic performance of the loudspeaker are better.

Description

Technical Field

[0001] The present application relates to the field of audio technology, and in particular to a centering support, a loudspeaker and an electronic device. Background Art

[0002] As a common electroacoustic transducer, loudspeakers are widely used in various electronic devices (such as mobile phones, tablets, laptops and other terminals). Loudspeakers mainly include magnetic circuit system, vibration system and support system. The vibration system includes diaphragm, voice coil and centering support. Among them, the centering support is one of the key components of the loudspeaker vibration system. The performance of the centering support will affect the sensitivity and stability of the entire loudspeaker system.

[0003] However, the current centering support cannot take into account both electrical conductivity and high rigidity, resulting in poor long-term stability and low-frequency acoustic performance of the loudspeaker. Utility Model Content

[0004] The present application provides a centering support, a loudspeaker and an electronic device. The centering support has both electrical conductivity and good rigidity, and the loudspeaker and the electronic device including the centering support have good long-term stability and low-frequency acoustic performance.

[0005] In the first aspect, the embodiment of the present application provides a loudspeaker. The loudspeaker includes a housing, a diaphragm, a magnetic circuit assembly, a voice coil, and a centering support. The magnetic circuit assembly is fixedly connected to the housing, the magnetic circuit assembly has a magnetic gap, the diaphragm is fixedly connected to the housing, one end of the voice coil is fixedly connected to the diaphragm, and the other end of the voice coil is located in the magnetic gap; in the extension direction of the centering support, the centering support includes a first end, a connecting portion, and a second end connected in sequence, the first end of the centering support is fixedly connected to the housing, and the second end of the centering support is fixedly connected to the voice coil; in the thickness direction of the centering support, the centering support includes a first insulating layer, a conductive layer, and a second insulating layer stacked in sequence, and the conductive layer is electrically connected to the voice coil; the centering support also includes a first reinforcement layer, the first reinforcement layer is fixed to the side of the second insulating layer of the connecting portion that is opposite to the conductive layer of the connecting portion, and the stiffness of the first reinforcement layer is greater than the stiffness of the conductive layer.

[0006] In the embodiment of the present application, the conductive layer of the centering support is electrically connected to the voice coil, so that the centering support can transmit electrical signals to the voice coil. When the voice coil is powered on and driven to vibrate, the second end of the centering support can move synchronously with the voice coil in the thickness direction of the centering support, and the first end of the centering support is fixed relative to the housing.

[0007] The connection portion of the centering support provided in the embodiment of the present application is provided with a first reinforcement layer, and the stiffness of the first reinforcement layer is greater than the stiffness of the conductive layer. It can be understood that stiffness refers to the ability of a material or structure to resist elastic deformation when subjected to force. Stiffness is a representation of the ease with which a material or structure is elastically deformed. The greater the stiffness of a material or structure, the less likely it is for the material or structure to elastically deform. Since the stiffness of the first reinforcement layer has a greater stiffness, when the centering support is subjected to force, the first reinforcement layer located at the connection portion of the centering support is not likely to elastically deform.

[0008] By providing a first reinforcement layer with greater rigidity at the connection part of the centering support, the centering support has greater rigidity, so that the centering support has a stronger anti-torsion ability, and the voice coil can be positioned in a plane perpendicular to the thickness direction of the centering support, effectively preventing the voice coil from deflecting during the vibration process, so that the vibration direction of the diaphragm is more accurate. That is, the centering support has a better centering effect on the voice coil, so that the stability of the voice coil and the speaker is better, which is beneficial to improving the sound quality of the speaker. It can be understood that the centering support can take into account both the conductive performance and the better centering effect.

[0009] In some embodiments, the material of the first reinforcement layer is a metal material.

[0010] In this embodiment, on the one hand, the metal material has a large rigidity, so the first reinforcement layer and the centering support can have a large rigidity, and the centering effect on the voice coil is better. On the other hand, the rigidity of the metal material is not easy to decay due to long-term repeated vibration, high temperature, etc., so the rigidity of the first reinforcement layer and the centering support is not easy to decay, and the centering effect on the voice coil is more stable. On the other hand, the dynamic and static rigidity of the metal material is relatively small, and the first reinforcement layer has a good rigidity stability, so the first reinforcement layer and the centering support have a small change in rigidity during the vibration of the voice coil, which is conducive to improving the long-term stability and low-frequency acoustic performance of the speaker.

[0011] It can be understood that stiffness can be divided into static stiffness and dynamic stiffness. Among them, static stiffness is the ability of a structure to resist deformation under a specific static excitation. Dynamic stiffness refers to the ability of a structure to resist deformation under a specific dynamic excitation. The size of the dynamic-static stiffness ratio of a material or structure (that is, the ratio of dynamic stiffness to static stiffness) can reflect the stiffness stability of the material or structure. The smaller the dynamic-static stiffness ratio of a material or structure, the better the stiffness stability of the material or structure; the higher the dynamic-static stiffness ratio of a material or structure, the worse the stiffness stability of the material or structure. In this embodiment, the dynamic-static stiffness of the metal material is relatively small, so that the first reinforcement layer has better stiffness stability.

[0012] Generally, polymer materials are prone to creep relaxation under long-term repeated vibration and high temperature conditions, which leads to the attenuation of the stiffness of polymer materials; and the dynamic and static stiffness of polymer materials is relatively large, and its stiffness stability is poor. The first reinforcement layer of the embodiment of the present application is made of metal material. Compared with the reinforcement structure of polymer materials, on the one hand, the stiffness of the centering support plate of the embodiment of the present application is larger and the stiffness is not easy to attenuate, which has a better centering effect on the voice coil; on the other hand, the stiffness change fluctuation of the centering support plate of the embodiment of the present application is small during the vibration of the voice coil, which makes the long-term stability and low-frequency acoustic performance of the speaker better.

[0013] In some embodiments, the centering support further includes a first protective layer, a portion of which is fixed to a side of the first reinforcing layer facing away from the second insulating layer of the connecting portion, and a portion of which is fixedly connected to the second insulating layer of the connecting portion via a side surface of the first reinforcing layer.

[0014] In this embodiment, the first protective layer can cover the first reinforcing layer, so that the first protective layer can protect the first reinforcing layer and prevent the first reinforcing layer from being corroded.

[0015] In some embodiments, in the thickness direction of the spider, the thickness of the first reinforcement layer is greater than or equal to the thickness of the conductive layer of the connecting portion.

[0016] In this embodiment, the first reinforcement layer has a relatively large thickness in its thickness direction, which is beneficial to improving the stiffness of the first reinforcement layer and the centering support, thereby facilitating improving the centering effect of the centering support on the voice coil.

[0017] In some embodiments, in a direction perpendicular to the extension direction of the centering spider and perpendicular to the thickness direction of the centering spider, the width of the first reinforcing layer is greater than or equal to the width of the conductive layer of the connecting portion.

[0018] In this embodiment, the width of the first reinforcement layer is relatively large in a direction perpendicular to the extension direction of the centering support and in a direction perpendicular to the thickness direction of the centering support, which is beneficial to improving the stiffness of the first reinforcement layer and the centering support, thereby facilitating improving the centering effect of the centering support on the voice coil.

[0019] In some embodiments, the centering support further includes a second reinforcement layer, which is fixed to a side of the first insulating layer of the connecting portion facing away from the conductive layer of the connecting portion, and has a stiffness greater than that of the conductive layer.

[0020] In this embodiment, by providing a second reinforcement layer with greater rigidity at the connection portion of the centering support, the rigidity of the centering support can be further increased, so as to enhance the centering effect of the centering support on the voice coil.

[0021] In some embodiments, the material of the second reinforcement layer is a metal material.

[0022] In this embodiment, the material of the second reinforcement layer is a metal material. On the one hand, the second reinforcement layer and the centering support can have a large rigidity, and the centering effect on the voice coil is better. On the other hand, the rigidity of the second reinforcement layer and the centering support is not easy to decay, and the centering effect on the voice coil is more stable. On the other hand, the dynamic and static rigidity of the second reinforcement layer is relatively small, and the rigidity stability of the second reinforcement layer is better, so that the rigidity change fluctuation of the second reinforcement layer and the centering support is small in the process of following the vibration of the voice coil, which is conducive to improving the long-term stability and low-frequency acoustic performance of the speaker.

[0023] In some embodiments, the centering support further includes a second protective layer, a portion of which is fixed to a side of the second reinforcement layer facing away from the first insulating layer of the connecting portion, and a portion of which is fixedly connected to the first insulating layer of the connecting portion via a side surface of the second reinforcement layer.

[0024] In this embodiment, the second protective layer can cover the second reinforcement layer, so that the second reinforcement layer can protect the second reinforcement layer and prevent the second reinforcement layer from being corroded.

[0025] In some embodiments, the first reinforcement layer and the second reinforcement layer are centrally symmetrically distributed relative to the conductive layer.

[0026] In this embodiment, the first reinforcement layer and the second reinforcement layer are centrally symmetrically distributed relative to the conductive layer. On the one hand, the first reinforcement layer and the second reinforcement layer provide good stiffness symmetry, which can ensure the stiffness symmetry of the entire speaker system during reciprocating vibration, thereby reducing the risk of deflection of the voice coil; on the other hand, the conductive layer can be located at the center of the entire laminated structure. That is, the conductive layer can be the neutral layer of the laminated structure. At this time, the conductive layer is subjected to less stress and is not prone to fatigue fracture, so that the conductive function of the centering support is not prone to failure.

[0027] In some embodiments, a portion of the second insulating layer is fixedly connected to the first insulating layer via a side surface of the conductive layer.

[0028] In this embodiment, the first insulating layer and the second insulating layer may be coated on the outer surface of the conductive layer to prevent the conductive layer from being short-circuited with other components, and to help improve the corrosion resistance and fatigue resistance of the conductive layer and the centering support.

[0029] In some embodiments, the centering support plate further includes a third reinforcement layer, which is fixed to the side of the second insulating layer at the first end facing away from the conductive layer at the first end and is arranged in the same layer as the first reinforcement layer, and has a stiffness greater than that of the conductive layer.

[0030] In this embodiment, by providing a third reinforcement layer with greater rigidity at the first end of the centering support, the rigidity of the centering support can be further improved, thereby improving the centering effect of the centering support on the voice coil. The third reinforcement layer is provided at the same layer as the first reinforcement layer, and the third reinforcement layer and the first reinforcement layer can be formed by the same process.

[0031] In some embodiments, the centering support plate further includes a fourth reinforcement layer, which is fixed to the side of the second insulating layer at the second end facing away from the conductive layer at the second end and is arranged in the same layer as the first reinforcement layer, and has a stiffness greater than that of the conductive layer.

[0032] In this embodiment, by providing a fourth reinforcement layer with greater rigidity at the second end of the centering support, the rigidity of the centering support can be further increased, thereby improving the centering effect of the centering support on the voice coil. The fourth reinforcement layer is provided at the same layer as the first reinforcement layer, and the fourth reinforcement layer and the first reinforcement layer can be formed by the same process.

[0033] In some embodiments, the centering support plate further includes a first soldering pad and a second soldering pad, the first soldering pad being embedded in the first insulating layer at the first end of the centering support plate and being electrically connected to the conductive layer at the first end, the second soldering pad being embedded in the second insulating layer at the second end and being electrically connected to the conductive layer at the second end and being spaced apart from the fourth reinforcement layer.

[0034] In this embodiment, the first pad of the centering support can be used to electrically connect to the conductive structure outside the speaker, and the second pad can be used to electrically connect to the voice coil, so that the voice coil can be electrically connected to the conductive structure outside the speaker through the second pad, the conductive layer and the first pad.

[0035] Among them, the first soldering pad can be fixed to the bottom side of the conductive layer, that is, the first soldering pad is located on the side of the conductive layer away from the diaphragm; the second soldering pad can be fixed to the top side of the conductive layer, that is, the second soldering pad is located on the side of the conductive layer facing the diaphragm, so that when the centering support plate follows the reciprocating vibration of the voice coil, the first soldering pad and the second soldering pad are not easy to interfere with other structures, and the electrical connection reliability of the centering support plate, the voice coil and the external conductive structure is better.

[0036] The second pad is separated and insulated from the fourth reinforcement layer at the second end of the centering support. When the speaker is powered on, no electrical loop is formed between the conductive layer at the second end of the centering support, the second pad and the fourth reinforcement layer, thereby reducing the risk of short circuit of the centering support.

[0037] In some embodiments, the centering support plate also includes a first welding pad and a second welding pad, the first welding pad is embedded in the second insulating layer at the first end, the first welding pad is electrically connected to the conductive layer at the first end, and is spaced apart from the third reinforcement layer, the second welding pad is embedded in the second insulating layer at the second end, the second welding pad is electrically connected to the conductive layer at the second end, and is spaced apart from the fourth reinforcement layer.

[0038] In this embodiment, the first pad is separated and insulated from the third reinforcement layer at the first end of the centering support. When the speaker is powered on, no electrical loop is formed between the conductive layer at the first end of the centering support, the first pad and the third reinforcement layer, thereby reducing the risk of a short circuit in the centering support. The second pad is separated and insulated from the fourth reinforcement layer at the second end of the centering support. When the speaker is powered on, no electrical loop is formed between the conductive layer at the second end of the centering support, the second pad and the fourth reinforcement layer, thereby reducing the risk of a short circuit in the centering support.

[0039] In some embodiments, the centering support plate further includes a first solder pad and a second solder pad, the first solder pad is embedded in the first insulating layer at the first end and electrically connected to the conductive layer at the first end, and the second solder pad is embedded in the first insulating layer at the second end and electrically connected to the conductive layer at the second end.

[0040] In some embodiments, in the thickness direction of the centering support plate, the centering support plate also includes a fifth reinforcement layer, the fifth reinforcement layer is fixed to the side of the first insulating layer at the first end that is away from the conductive layer at the first end, and the stiffness of the fifth reinforcement layer is greater than the stiffness of the conductive layer; the first welding pad is spaced apart from the fifth reinforcement layer.

[0041] In this embodiment, by providing a fifth reinforcement layer with greater rigidity at the first end of the centering support, the rigidity of the centering support can be further improved, thereby improving the centering effect of the centering support on the voice coil. The first soldering pad is separated and insulated from the fifth reinforcement layer at the first end of the centering support. When the speaker is powered on, no electrical loop is formed between the conductive layer at the first end of the centering support, the first soldering pad, and the fifth reinforcement layer, thereby reducing the risk of a short circuit in the centering support.

[0042] In some embodiments, in the thickness direction of the centering support plate, the centering support plate also includes a sixth reinforcement layer, the sixth reinforcement layer is fixed to the side of the first insulating layer at the second end that is away from the conductive layer at the second end, and the stiffness of the sixth reinforcement layer is greater than the stiffness of the conductive layer; the second welding pad is spaced apart from the sixth reinforcement layer.

[0043] In this embodiment, by providing a sixth reinforcement layer with greater rigidity at the second end of the centering support, the rigidity of the centering support can be further improved, thereby improving the centering effect of the centering support on the voice coil. The second pad is separated and insulated from the sixth reinforcement layer at the second end of the centering support. When the speaker is powered on, no electrical loop is formed between the conductive layer at the second end of the centering support, the second pad, and the sixth reinforcement layer, thereby reducing the risk of a short circuit in the centering support.

[0044] In some embodiments, the connecting portion includes a first connecting portion, a second connecting portion, and a third connecting portion connected in sequence, the first connecting portion is fixedly connected to the first end, the third connecting portion is fixedly connected to the second end, and the second connecting portion is S-shaped and is at least partially located between the second end and the third connecting portion.

[0045] In this embodiment, the second connection portion of the centering support is connected between the first connection portion and the third connection portion, and is the main force-bearing deformation structure. By setting the second connection portion to be S-shaped, the connection portion can be a curved structure with multiple bends, so that the connection portion and the centering support have greater rigidity in a plane perpendicular to the thickness direction of the centering support, that is, the connection portion and the centering support have greater lateral rigidity, and the stability of the centering support and the centering ability of the voice coil are better. In addition, the bend can make the second connection portion have a longer extension length, so that the connection portion can have a sufficient deformation length to meet the amplitude requirements of the voice coil.

[0046] In some embodiments, in the extension direction from the first connection portion to the third connection portion, the width of the first reinforcement layer increases, decreases, increases, and decreases.

[0047] It can be understood that in this embodiment, in the extension direction from the first connection part to the third connection part, the radius of curvature of the second connection part can be reduced, increased, reduced, and increased. Since the second connection part is prone to stress concentration when it is subjected to force at a position with a small radius of curvature, this embodiment increases the width of the first reinforcement layer at the position where stress concentration is likely to occur on the second connection part to increase the stiffness of the second connection part at these positions where stress concentration is likely to occur, thereby reducing the risk of fracture failure of the second connection part. Among them, the radius of curvature of the second connection part can be continuously changed, and the width of the first reinforcement layer can also be continuously changed.

[0048] In some embodiments, the second connecting portion includes a first bending segment and a second bending segment; the first bending segment is connected between the first connecting portion and the second bending segment, the inner normal of the first bending segment is toward the side away from the third connecting portion, and the inner normal of the second bending segment is toward the side close to the third connecting portion.

[0049] In this embodiment, by setting the position and shape of the first bending section and the second bending section, the space between the first connecting portion and the third connecting portion can be fully utilized, and the first bending section and the second bending section can have a larger curvature radius to reduce the risk of stress concentration in the first bending section and the second bending section.

[0050] In some embodiments, in the extension direction from the first connection portion to the third connection portion, the width-to-thickness ratio of the second connection portion increases, decreases, increases, and decreases.

[0051] In this embodiment, by setting the cross-section of the second connecting part to a variable cross-section, the width-to-thickness ratios of different positions of the second connecting part can be made different, so that when the entire second connecting part is subjected to a force along the thickness direction of the centering support plate, the deformation of each part is more uniform, thereby preventing stress concentration and helping to increase the life of the centering support plate.

[0052] In some embodiments, the radius of curvature of the second connecting portion is negatively correlated with the aspect ratio.

[0053] Since stress concentration is easily generated when the second connection part is subjected to force in an area with a small radius of curvature, in this embodiment, by associating the radius of curvature of the second connection part with the width-to-thickness ratio, the width-to-thickness ratio of the part of the second connection part with a small radius of curvature (i.e., a large degree of curvature) can be larger, thereby reducing stress concentration in the second connection part, making the stress distribution in the second connection part more uniform, avoiding stress concentration, and helping to extend the life of the second connection part and the centering support plate.

[0054] In some embodiments, the width-to-thickness ratio of the connecting portion is in the range of 3-8.

[0055] It can be understood that in this embodiment, the width-to-thickness ratio of each cross section of the connection part is within the range of 3 to 8, and the width-to-thickness ratio of each cross section can be the same or different. By setting the connection part to have a suitable width-to-thickness ratio, the lateral stiffness of the connection part is large, which has a good centering effect on the voice coil, so that the speaker has a higher sensitivity and better stability.

[0056] In some embodiments, the diaphragm is disposed opposite to the magnetic circuit assembly.

[0057] In this embodiment, the positions of the magnetic circuit assembly and the diaphragm in the speaker are arranged reasonably to better utilize the space inside the speaker.

[0058] In a second aspect, an embodiment of the present application further provides an electronic device. The electronic device comprises a housing and the above-mentioned speaker, wherein the speaker is mounted on the housing. The electronic device has good low-frequency acoustic performance.

[0059] In a third aspect, the embodiments of the present application further provide a centering support plate. The centering support plate is applied to a loudspeaker. In the extension direction of the centering support plate, the centering support plate includes a first end, a connecting portion, and a second end connected in sequence; in the thickness direction of the centering support plate, the centering support plate includes a first insulating layer, a conductive layer, and a second insulating layer stacked in sequence, and the conductive layer is used to electrically connect to the voice coil of the loudspeaker; the centering support plate also includes a first reinforcement layer, which is fixed to the side of the second insulating layer of the connecting portion that is opposite to the conductive layer of the connecting portion, and the stiffness of the first reinforcement layer is greater than the stiffness of the conductive layer.

[0060] In an embodiment of the present application, the conductive layer of the centering support is electrically connected to the voice coil of the speaker, so that the centering support can transmit electrical signals to the voice coil. The connection portion of the centering support is provided with a first reinforcement layer, and the stiffness of the first reinforcement layer is greater than the stiffness of the conductive layer. When the centering support is subjected to force, the first reinforcement layer located at the connection portion of the centering support is not prone to elastic deformation.

[0061] By providing a first reinforcement layer with greater rigidity at the connection part of the centering support, the centering support has greater rigidity, so that the centering support has a stronger anti-torsion ability. The centering support is applied to the speaker, and the voice coil of the speaker can be positioned in a plane perpendicular to the thickness direction of the centering support, effectively preventing the voice coil of the speaker from deflecting during vibration. That is, the centering support has a better centering effect on the voice coil of the speaker, so that the stability of the voice coil and the speaker is better, which is beneficial to improve the sound quality of the speaker. It can be understood that the centering support can take into account both the conductive performance and the better centering effect.

[0062] In some embodiments, the material of the first reinforcement layer is a metal material.

[0063] In this embodiment, on the one hand, the metal material has a large rigidity, so the first reinforcement layer and the centering support can have a large rigidity, and the centering effect on the voice coil of the speaker is better. On the other hand, the rigidity of the metal material is not easy to decay due to long-term repeated vibration, high temperature, etc., so the rigidity of the first reinforcement layer and the centering support is not easy to decay, and the centering effect on the voice coil of the speaker is more stable. On the other hand, the dynamic and static rigidity of the metal material is relatively small, and the first reinforcement layer has a good rigidity stability, so the first reinforcement layer and the centering support have a small change in rigidity during the vibration of the voice coil of the speaker, which is conducive to improving the long-term stability and low-frequency acoustic performance of the speaker.

[0064] The centering support also includes a first protective layer, a portion of which is fixed to a side of the first reinforcing layer facing away from the second insulating layer of the connecting portion, and a portion of which is fixedly connected to the second insulating layer of the connecting portion through a side surface of the first reinforcing layer.

[0065] In this embodiment, the first protective layer can cover the first reinforcing layer, so that the first protective layer can protect the first reinforcing layer and prevent the first reinforcing layer from being corroded.

[0066] In some embodiments, in the thickness direction of the spider, the thickness of the first reinforcement layer is greater than or equal to the thickness of the conductive layer of the connecting portion.

[0067] In this embodiment, the first reinforcement layer has a relatively large thickness in its thickness direction, which is beneficial to improving the stiffness of the first reinforcement layer and the centering support, thereby facilitating improving the centering effect of the centering support on the voice coil of the speaker.

[0068] In some embodiments, in a direction perpendicular to the extension direction of the centering spider and perpendicular to the thickness direction of the centering spider, the width of the first reinforcing layer is greater than or equal to the width of the conductive layer of the connecting portion.

[0069] In this embodiment, the width of the first reinforcement layer is relatively large in a direction perpendicular to the extension direction of the centering support and in a direction perpendicular to the thickness direction of the centering support, which is beneficial to improving the stiffness of the first reinforcement layer and the centering support, thereby facilitating improving the centering effect of the centering support on the voice coil of the speaker.

[0070] In some embodiments, the centering support further includes a second reinforcement layer, which is fixed to a side of the first insulating layer of the connecting portion facing away from the conductive layer of the connecting portion, and has a stiffness greater than that of the conductive layer.

[0071] In this embodiment, by providing a second reinforcement layer with greater rigidity at the connection portion of the centering support, the rigidity of the centering support can be further increased, so as to enhance the centering effect of the centering support on the voice coil of the speaker.

[0072] In some embodiments, the material of the second reinforcement layer is a metal material.

[0073] In this embodiment, the material of the second reinforcement layer is a metal material. On the one hand, the second reinforcement layer and the centering support plate can have a large rigidity, and the centering effect on the voice coil of the speaker is better. On the other hand, the rigidity of the second reinforcement layer and the centering support plate is not easy to decay, and the centering effect on the voice coil of the speaker is more stable. On the other hand, the dynamic and static rigidity of the second reinforcement layer is relatively small, and the rigidity stability of the second reinforcement layer is better, so that the rigidity change fluctuation of the second reinforcement layer and the centering support plate in the process of following the vibration of the voice coil of the speaker is small, which is conducive to improving the long-term stability and low-frequency acoustic performance of the speaker.

[0074] In some embodiments, the centering support further includes a second protective layer, a portion of which is fixed to a side of the second reinforcement layer facing away from the first insulating layer of the connecting portion, and a portion of which is fixedly connected to the first insulating layer of the connecting portion via a side surface of the second reinforcement layer.

[0075] In this embodiment, the second protective layer can cover the second reinforcement layer, so that the second reinforcement layer can protect the second reinforcement layer and prevent the second reinforcement layer from being corroded.

[0076] In some embodiments, the centering support further includes a third reinforcement layer, which is fixed to a side of the second insulating layer at the first end that faces away from the conductive layer at the first end, and is disposed in the same layer as the first reinforcement layer, and has a stiffness greater than that of the conductive layer.

[0077] In this embodiment, by providing a third reinforcement layer with greater rigidity at the first end of the centering support, the rigidity of the centering support can be further increased, thereby improving the centering effect of the centering support on the voice coil of the speaker. The third reinforcement layer is provided at the same layer as the first reinforcement layer, and the third reinforcement layer and the first reinforcement layer can be formed by the same process.

[0078] In some embodiments, the centering support plate further includes a fourth reinforcement layer, which is fixed to the side of the second insulating layer at the second end facing away from the conductive layer at the second end and is arranged in the same layer as the first reinforcement layer, and has a stiffness greater than that of the conductive layer.

[0079] In this embodiment, by providing a fourth reinforcement layer with greater rigidity at the second end of the centering support, the rigidity of the centering support can be further increased, thereby improving the centering effect of the centering support on the voice coil of the speaker. The fourth reinforcement layer is provided at the same layer as the first reinforcement layer, and the fourth reinforcement layer and the first reinforcement layer can be formed by the same process. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0081] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0082] Figure 2 yes Figure 1 The structure diagram of the speaker shown in some embodiments;

[0083] Figure 3 yes Figure 2 An exploded view of a portion of the structure of the loudspeaker in some embodiments;

[0084] Figure 4 yes Figure 3 A schematic diagram of the structure of the housing shown at another angle;

[0085] Figure 5 yes Figure 3The structure schematic diagram of the magnetic circuit assembly shown in some embodiments;

[0086] Fig. 6A yes Figure 3 The illustrated speaker is a schematic diagram of a portion of the structure in some embodiments;

[0087] Figure 6B yes Fig. 6A The schematic diagram of the cross-sectional structure of the loudspeaker shown is taken along AA;

[0088] Figure 7 yes Figure 2 The illustrated schematic diagram of the cross-sectional structure of the loudspeaker taken along BB in some embodiments;

[0089] Figure 8 yes Figure 3 The schematic diagram of the structure of the centering support piece in some embodiments is shown;

[0090] Fig. 9 yes Figure 2 A schematic diagram of a part of the structure of the loudspeaker at another angle;

[0091] Fig.10 yes Figure 2 A schematic diagram of a part of the structure of the loudspeaker at another angle;

[0092] Fig.11 yes Figure 2 The schematic diagram of the cross-sectional structure of the loudspeaker taken along BB in some other embodiments is shown;

[0093] Fig.12 yes Figure 8 The schematic diagram of the partial cross-section structure of the centering support piece shown is cut along CC;

[0094] Fig.13 yes Figure 8 The schematic diagram of the partial cross-section structure of the centering support piece shown is cut along DD;

[0095] Fig.14 yes Figure 8 The schematic diagram of the partial cross-section structure of the centering support piece shown is cut along EE;

[0096] Fig.15 yes Figure 8 The schematic diagram of the structure of the centering support piece shown in FIG.

[0097] Fig.16 yes Figure 8 The illustrated schematic diagram of a partial cross-sectional structure of a centering support in some embodiments;

[0098] Fig.17 yes Figure 8The schematic diagram of the partial cross-section structure of the centering support piece in other embodiments is shown;

[0099] Fig.18 yes Figure 8 The schematic diagram of the partial cross-section structure of the centering support piece in other embodiments is shown;

[0100] Fig.19 yes Figure 8 The schematic diagram of the partial cross-section structure of the centering support piece in other embodiments is shown;

[0101] Fig. 20 yes Figure 8 A top view of the centering spider shown;

[0102] Fig.21 yes Figure 8 A stress distribution simulation diagram of a part of the structure of the centering support shown;

[0103] Fig. 22 yes Figure 8 A stress distribution simulation diagram of a part of the structure of the centering support shown;

[0104] Fig.23 yes Figure 8 The structure diagram of the centering support piece in other embodiments is shown. DETAILED DESCRIPTION

[0105] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0106] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or an undetachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged.

[0107] The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "top", "bottom", "inside", "outside", "side", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0108] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", "sixth", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", etc. may explicitly or implicitly include one or more of the features.

[0109] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0110] References to "some embodiments" and the like described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in some embodiments", "in other embodiments", and the like appearing in different places in this specification do not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way.

[0111] The terms "including", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized. It is understood that the specific embodiments described herein are only used to explain the relevant embodiments, rather than to limit the embodiments. It should also be noted that for ease of description, only parts related to the embodiments are shown in the drawings. The term "plurality" means at least two.

[0112] In the embodiments of the present application, the terms "parallel" and "perpendicular" are defined in terms of the current process level, rather than being absolutely strict definitions in a mathematical sense. A small amount of deviation is allowed, and approximately parallel, approximately perpendicular, etc. are all acceptable. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0° and 10°. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80° and 100°.

[0113] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0114] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0115] See also Figure 1 , Figure 1It is a structural diagram of an electronic device 100 provided in an embodiment of the present application.

[0116] In some embodiments, the electronic device 100 may be a device with an audio playback function, such as a mobile phone, a tablet computer, a multimedia player, a headset, a stereo, a laptop computer, a vehicle-mounted device, a foldable terminal device, a television, or a wearable device. Among them, the wearable device may be a smart bracelet, a smart watch, a smart head display, smart glasses, etc. Figure 1 The electronic device 100 shown is described by taking a mobile phone as an example. Of course, other types of electronic devices may also adopt similar structures, which will not be described in detail below.

[0117] Exemplarily, the electronic device 100 may include a housing 10, a display screen 20, and a speaker 30. The housing 10 is used to protect the internal electronic components of the electronic device 100. The housing 10 may include a frame 101 and a back cover 102, wherein the frame 101 is connected to the back cover 102 and is arranged around the back cover 102. Exemplarily, the display screen 20 may be fixed to the frame 101. The display screen 20 is arranged opposite to the back cover 102, and the display screen 20 may enclose the internal space of the electronic device 100 together with the frame 101 and the back cover 102. The display screen 20 may be a flexible display screen or a rigid display screen. The display screen 20 may be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode (Mini Organic Light-emitting Diode) display screen, a micro organic light-emitting diode (Micro Organic Light-emitting Diode) display screen, a quantum dot light emitting diode (Quantum Dot Light Emitting Diodes, QLED) display screen, a liquid crystal display (Liquid Crystal Display, LCD), etc.

[0118] The frame 101 may be provided with a sound outlet 1001. The number of the sound outlet 1001 may be one or more. Figure 1 The number of the sound outlet holes 1001 shown in the figure is multiple. In other embodiments, the sound outlet holes 1001 can also be set on the back cover 102, the display screen 20, the connection between the frame 101 and the display screen 20, or the connection between the frame 101 and the back cover 102.

[0119] Exemplarily, the speaker 30 may be installed in the housing 10 and located inside the electronic device 100. Figure 1 The speaker 30 is indicated by a dotted line. The speaker 30 can play sound to the outside of the electronic device 100 through the sound outlet 1001.

[0120] It should be noted that Figure 1 Some components of the electronic device 100 are shown schematically only, and the actual shapes and sizes of these components are not subject to Figure 1 It should be understood that when the electronic device 100 is in other forms, the electronic device 100 may not include the display screen 20 , or the electronic device 100 may include multiple display screens 20 .

[0121] The above mainly introduces the relevant configuration of the speaker 30 in the electronic device 100, and the following will introduce the specific structure of the speaker 30 in conjunction with the relevant drawings.

[0122] See also Figure 2 and Figure 3 , Figure 2 yes Figure 1 The structure diagram of the speaker 30 in some embodiments is shown. Figure 3 yes Figure 2 The speaker 30 is shown as a partially exploded view of some embodiments. It can be understood that Figure 3 The following figures and the related drawings only schematically show some components of the speaker 30, and the actual shapes, sizes, positions and structures of these components are not limited to the following figures and the related drawings ... Figure 3 and the accompanying drawings below.

[0123] In some embodiments, the speaker 30 may include a housing 31, a diaphragm 32, a magnetic circuit assembly 33, a voice coil 34, a connecting frame 35, and a centering support 36. In the following text, for the convenience of description, the length direction of the speaker 30 is defined as the X-axis direction, the width direction is defined as the Y-axis direction, and the thickness direction is defined as the Z-axis direction, and the above directions are arranged perpendicularly in pairs. The speaker 30 and its components or structures are defined such that the side close to the diaphragm 32 is the "top", and the side away from the diaphragm 32 is the "bottom".

[0124] The housing 31 may be a frame, for example, a rectangular frame. The middle of the housing 31 is hollowed out. It is understandable that the housing 31 may also be called a basin frame of the speaker 30. In some other embodiments, the housing 31 may also be a frame of other shapes, such as a circular frame, etc., which is not strictly limited in the present application.

[0125] Please refer to Figure 3 and Figure 4 , Figure 4 yes Figure 3 The structure schematic diagram of the housing 31 shown is shown at another angle.

[0126] In some embodiments, the housing 31 may have a mounting groove 311 , and the mounting groove 311 is arranged around the circumference of the housing 31 .

[0127] Exemplarily, the housing 31 may include a protrusion 312. The protrusion 312 may be located at the bottom side of the housing 31. The number of the protrusions 312 may be multiple, for example, when the housing 31 is a rectangular frame, the number of the protrusions 312 may be four, and the four protrusions 312 are respectively arranged at the four corners of the housing 31.

[0128] Exemplarily, the housing 31 may have an avoidance groove 313. The avoidance groove 313 may be formed by hollowing out the middle of the housing 31, and the shape of the avoidance groove 313 may be substantially rectangular. From the top side of the housing 31 to the bottom side of the housing 31, the inner wall of the avoidance groove 313 may be inclined toward the center of the housing 31.

[0129] Please refer to Figure 3 and Figure 5 , Figure 5 yes Figure 3 The magnetic circuit assembly 33 shown is a schematic structural diagram in some embodiments.

[0130] In some embodiments, the magnetic circuit assembly 33 may include a central magnet 331 , side magnets 332 , a central magnetic conductive member 333 , a side magnetic conductive member 334 , and a lower magnetic conductive member 335 .

[0131] Exemplarily, the lower magnetic conductive member 335 may include a first portion 3351 and a second portion 3352 disposed around the first portion 3351. The lower magnetic conductive member 335 may be roughly in the shape of a rectangular plate. The first portion 3351 of the lower magnetic conductive member 335 may be roughly in the shape of a rectangle, and the second portion 3352 may be roughly in the shape of a rectangular ring.

[0132] Exemplarily, the center magnet 331 may be roughly rectangular. The center magnet 331 may be fixed to the first portion 3351 of the lower magnetic conductive member 335. The side magnet 332 may be fixed to the second portion 3352 of the lower magnetic conductive member 335. At this time, the side magnet 332 surrounds the center magnet 331 and is spaced apart from the center magnet 331. For example, the side magnet 332 may include four magnets, which are arranged around the center magnet 331 and are spaced apart from the center magnet 331. In other embodiments, the side magnet 332 may also be an annular magnet, which is not strictly limited in the embodiments of the present application.

[0133] Exemplarily, some of the side magnets 332 may have an avoidance groove 3321. For example, two side magnets 332 located at opposite sides may each have an avoidance groove 3321. The avoidance groove 3321 may be formed from a side surface of the side magnet 332 facing away from the center magnet 331 and may be recessed toward the center magnet 331. The avoidance groove 3321 may also penetrate a side surface of the side magnet 332 facing the side magnetic conductive member 334.

[0134] In some embodiments, the central magnetic conductive member 333 is fixed to the side of the central magnet 331 facing away from the lower magnetic conductive member 335. The material of the central magnetic conductive member 333 can be a magnetic conductive material.

[0135] In some embodiments, the side magnetic conductive member 334 is fixed to the side of the side magnet 332 facing away from the lower magnetic conductive member 335. The side magnetic conductive member 334 surrounds the central magnetic conductive member 333 and is spaced apart from the central magnetic conductive member 333. The side magnetic conductive member 334 may include four magnetic conductive portions 3341 and a connecting frame 3342, two of the four magnetic conductive portions 3341 are arranged opposite to each other, and the other two magnetic conductive portions 3341 are arranged opposite to each other, and the connecting frame 3342 surrounds the outer peripheral side of the four magnetic conductive portions 3341 and is fixedly connected to the four magnetic conductive portions 3341. The four magnetic conductive portions 3341 are respectively located on the top sides of the four magnets of the side magnet 332. The material of the side magnetic conductive member 334 may be a magnetic conductive material.

[0136] In some embodiments, the magnetic circuit assembly 33 may have a magnetic gap 33c, wherein the gap between the side magnet 332 and the center magnet 331 forms a part of the magnetic gap 33c, and the gap between the side magnetic conductive member 334 and the center magnetic conductive member 333 forms another part of the magnetic gap 33c.

[0137] In some embodiments, the magnetic circuit assembly 33 may have an avoidance zone 330. Among the four magnets of the side magnet 332, the space between two adjacent magnets may form a part of the avoidance zone 330. Among the four magnetic conductive parts 3341 of the side magnetic conductive part 334, the space between two adjacent magnetic conductive parts 3341 may form another part of the avoidance zone 330. The number of the avoidance zones 330 may be four accordingly.

[0138] Please refer to Fig. 6A and Figure 6B , Fig. 6A yes Figure 3 The speaker 30 shown in FIG. 1 is a partial structural diagram of some embodiments. Figure 6B yes Fig. 6A The cross-sectional structure diagram of the speaker 30 is shown along the AA line. Fig. 6A It mainly shows the assembly structure diagram of the housing 31 and the magnetic circuit assembly 33.

[0139] In some embodiments, the magnetic circuit assembly 33 is fixedly connected to the housing 31. The side magnetic conductive member 334 is also fixedly connected to the housing 31. The side magnetic conductive member 334 may be partially located in the mounting slot 311 of the housing 31. For example, the connection frame 3342 of the side magnetic conductive member 334 may be partially located in the mounting slot 311 of the housing 31. In some other examples, the magnetic conductive portion 3341 and the connection frame 3342 of the side magnetic conductive member 334 may both be partially located in the mounting slot 311 of the housing 31.

[0140] In some examples, the side magnet 332 may also be fixedly connected to the shell 31 . For example, the four magnets of the side magnet 332 are respectively fixed to the four sides of the shell 31 , so that the assembly structure is more stable and accurate.

[0141] See also Figure 7 , Figure 7 yes Figure 2 The cross-sectional structure diagram of the speaker 30 shown in some embodiments is taken along the section BB. Figure 7 It mainly shows a schematic diagram of the assembly structure of the housing 31 , the diaphragm 32 , the magnetic circuit assembly 33 , the voice coil 34 and the connecting frame 35 .

[0142] In some embodiments, the diaphragm 32 is fixedly connected to the housing 31. For example, the diaphragm 32 may be rectangular. The diaphragm 32 may be located on the top side of the housing 31 and sleeved on the housing 31.

[0143] Exemplarily, the diaphragm 32 may include a vibration portion 321, a folding ring portion 322 and a fixing portion 323. The vibration portion 321, the folding ring portion 322 and the fixing portion 323 are fixedly connected in sequence. The vibration portion 321 may be rectangular. The folding ring portion 322 surrounds the outer peripheral side of the vibration portion 321 and is connected to the vibration portion 321. The folding ring portion 322 may be deformable, for example, the folding ring portion 322 may have an annular structure with an overall curved surface, and the annular structure with the curved surface is easy to deform and stretch, so that the vibration portion 321 can be displaced relative to the fixing portion 323. The fixing portion 323 surrounds the outer peripheral side of the folding ring portion 322 and is connected to the folding ring portion 322. The fixing portion 323 may be a sleeve structure, which is sleeved on the outer peripheral side of the shell 31, so that the diaphragm 32 is fixed to the shell 31.

[0144] Exemplarily, the folding ring portion 322 and the vibration portion 321 correspond to the middle hollow position of the shell 31 , and the avoidance groove 313 is used to avoid the deformation movement of the folding ring portion 322 .

[0145] In some embodiments, the magnetic circuit assembly 33 is arranged opposite to the diaphragm 32. In this way, the positions of the magnetic circuit assembly 33 and the diaphragm 32 in the speaker 30 are arranged more reasonably, so as to better utilize the space inside the speaker 30. Exemplarily, a gap is formed between the magnetic circuit assembly 33 and the vibration portion 321 and the folding ring portion 322 of the diaphragm 32. The central magnetic conductive member 333 is arranged opposite to and spaced from the vibration portion 321 of the diaphragm 32. The side magnetic conductive member 334 is arranged opposite to and spaced from the folding ring portion 322 of the diaphragm 32. In some other embodiments, the magnetic circuit assembly 33 may also be staggered with the diaphragm 32. For example, the magnetic circuit assembly 33 may be located on the peripheral side of the diaphragm 32, which is not strictly limited in the present application.

[0146] In some embodiments, the voice coil 34 may be located between the diaphragm 32 and the magnetic circuit assembly 33. One end of the voice coil 34 is fixedly connected to the diaphragm 32, and the other end of the voice coil 34 is located in the magnetic gap 33c. For example, the voice coil 34 may be connected to the vibration part 321 of the diaphragm 32.

[0147] In some embodiments, the voice coil 34 can be fixedly connected to the diaphragm 32 through a connecting frame 35 to better meet the position arrangement requirements. Exemplarily, the connecting frame 35 can be a frame, so that the connecting frame 35 can connect the voice coil 34 to the diaphragm 32 along the circumference of the voice coil 34. Of course, in some other embodiments, the speaker 30 may not include the connecting frame 35. In this case, the voice coil 34 can be fixed on the diaphragm 32.

[0148] For example, the voice coil 34 may be roughly in a hollow rectangular structure. When the end of the voice coil 34 away from the diaphragm 32 is located in the magnetic gap 33c, the end of the voice coil 34 away from the diaphragm 32 may surround the outer periphery of the central magnet 331 and the central magnetic conductive member 333, and the side magnet 332 is located at the outer periphery of the end of the voice coil 34 away from the diaphragm 32; in addition, there are gaps between the voice coil 34 and the central magnet 331 and the side magnet 332.

[0149] In some embodiments, the voice coil 34 may be formed by winding a wire. The voice coil 34 may have a wiring portion 341. The wiring portion 341 may be led out from the body of the voice coil 34 and located outside the body of the voice coil 34. Exemplarily, the number of the wiring portions 341 may be two. The speaker 30 may energize the voice coil 34 by supplying power to the wiring portion 341.

[0150] In the embodiment of the present application, when the voice coil 34 is energized, a force is generated in the magnetic field of the magnetic circuit assembly 33, thereby pushing the diaphragm 32 to vibrate, and the diaphragm 32 pushes the air to vibrate, so that the speaker 30 can make a sound. Among them, the voice coil 34 can receive an alternating signal and generate an alternating force in the magnetic field. The direction in which the voice coil 34 pushes the diaphragm 32 to vibrate is along the axial direction of the voice coil 34, and the axial direction of the voice coil 34 can be parallel to the thickness direction of the speaker 30 (that is, the Z-axis direction). The vibration direction of the diaphragm 32 is usually also perpendicular to the diaphragm 32 itself.

[0151] It is understandable that, in other embodiments, the speaker 30 may include more or fewer components, and the position and structure of each component may be arranged in other ways, which is not strictly limited in the present application.

[0152] Please refer to Figures 8 to 10 , Figure 8 yes Figure 3 The structure diagram of the centering support piece 36 in some embodiments is shown in FIG. Fig. 9 yes Figure 2 The schematic diagram of the partial structure of the speaker 30 at another angle is shown. Fig.10 yes Figure 2 The speaker 30 is shown in a schematic diagram of a part of the structure at another angle. Fig. 9 It mainly shows the assembly structure diagram of the housing 31, the magnetic circuit assembly 33 and the centering support piece 36, Fig.10 It mainly shows an assembly structure diagram of the housing 31 , the diaphragm 32 , the central magnet 331 , the side magnet 332 , the central magnetic conductive member 333 , the side magnetic conductive member 334 , the voice coil 34 , the connecting frame 35 and the centering support plate 36 .

[0153] In some embodiments, in the extension direction of the centering spider 36 , the centering spider 36 may include a first end 36A, a connecting portion 36B, and a second end 36C that are sequentially connected. Figure 8 The first end 36A, the connecting portion 36B and the second end 36C are schematically distinguished by dotted lines. The first end 36A can be fixedly connected to the housing 31, and the second end 36C can be fixedly connected to the end of the voice coil 34 away from the diaphragm 32. At this time, the centering support 36 is connected between the voice coil 34 and the housing 31. When the voice coil 34 vibrates along the Z-axis direction, the second end 36C of the centering support 36 can vibrate along the Z-axis direction along the voice coil 34, and the first end 36A of the centering support 36 is fixed relative to the housing 31. It can be understood that the first end 36A can be the fixed end of the centering support 36, and the second end 36C can be the free end of the centering support 36. Of course, in other embodiments, the second end 36C of the centering support 36 can also be fixedly connected to other positions of the voice coil 34, and the present application does not strictly limit this.

[0154] Exemplarily, the centering support 36 may be roughly plate-shaped. The thickness direction of the centering support 36 may be parallel to the Z-axis direction. The centering support 36 has deformation capability. The main deformable direction of the centering support 36 is mainly the thickness direction of the centering support 36. The deformability of the centering support 36 in the XY plane may be as small as possible, that is, the rigidity of the centering support 36 in the XY plane may be as large as possible.

[0155] In the embodiment of the present application, when the voice coil 34 is driven to vibrate, the centering support plate 36 can move synchronously with the voice coil 34 in the Z-axis direction, and position the voice coil 34 in the XY plane to prevent the voice coil 34 from deflecting, so that the vibration direction of the diaphragm 32 is more accurate, which is beneficial to improving the sound quality of the speaker 30.

[0156] Please refer to Fig.10 and Fig.11 , Fig.11 yes Figure 2 The cross-sectional structure diagram of the speaker 30 in other embodiments is shown along the BB. Fig.11It mainly shows a schematic diagram of the assembly structure of the housing 31 , the diaphragm 32 , the magnetic circuit assembly 33 , the voice coil 34 , the connecting frame 35 and the centering support piece 36 .

[0157] In some embodiments, along the Z-axis direction, the centering support plate 36 can be located between the shell 31 and the lower magnetic conductive member 335. In the XY plane, the centering support plate 36 can be located in the avoidance area 330 of the magnetic circuit assembly 33. Exemplarily, the number of the centering support plates 36 can be multiple, for example, the number of the centering support plates 36 can be four, but it is not limited to this. At this time, the shell 31 is connected by multiple centering support plates 36, and the multiple centering support plates 36 can provide better support and positioning effects for the voice coil 34. Among them, the four centering support plates 36 can be respectively located in the four avoidance areas 330 and are arranged around the central magnet 331. The four centering support plates 36 can be respectively connected to the four corners of the voice coil 34, and respectively connected to the protrusions 312 of the shell 31 (see Figure 3 ) to support and position the voice coil 34 from multiple positions.

[0158] For example, a portion of the first end 36A of the centering support 36 may be located in the avoidance groove 3321 of the side magnet 332. In this way, the side magnet 332 and the centering support 36 occupy less space in the Z-axis direction, thereby facilitating the reduction of the size of the speaker 30 in the Z-axis direction.

[0159] Exemplarily, the four centering arms 36 may be symmetrical with respect to the X-axis direction and the Y-axis direction to better balance the force on the voice coil 34 in the XY plane so that the multiple centering arms 36 have a better centering effect on the voice coil 34 .

[0160] In some embodiments, two of the four centering supports 36 of the speaker 30 are electrically connected to the two wiring portions 341 of the voice coil 34, respectively. In this case, the centering supports 36 can be conductive, thereby energizing the voice coil 34. In other embodiments, the centering supports 36 may not be electrically connected to the wiring portions 341 of the voice coil 34.

[0161] In a conventional loudspeaker 30, the voice coil 34 generally generates an interaction force with the magnetic field after being energized, thereby driving the diaphragm 32 to vibrate, so as to achieve the sound of the loudspeaker 30. The diaphragm 32 is generally expected to vibrate in the thickness direction, so the voice coil 34 is required to vibrate in the thickness direction when driven, but the voice coil 34 may deflect, twist, etc. when vibrating due to its connection structure with other components or force conditions. This deflection and twisting synchronously push the diaphragm 32 to move, causing the diaphragm 32 to deflect and twist, thereby affecting the sound quality of the loudspeaker 30. In the embodiment of the present application, the loudspeaker 30 can increase the stiffness (i.e., lateral stiffness) of the centering support 36 in the XY plane so that the centering support 36 has a strong anti-twist ability to maintain the stability of the voice coil 34, that is, to ensure the stability of the loudspeaker 30.

[0162] It can be understood that stiffness refers to the ability of a material or structure to resist elastic deformation when subjected to force. Stiffness is a representation of the ease of elastic deformation of a material or structure. The greater the stiffness of a material or structure, the less likely it is for the material or structure to undergo elastic deformation. Stiffness can be divided into static stiffness and dynamic stiffness. Among them, static stiffness is the ability of a structure to resist deformation under a specific static excitation. Dynamic stiffness refers to the ability of a structure to resist deformation under a specific dynamic excitation. The size of the dynamic-static stiffness ratio of a material or structure (that is, the ratio of dynamic stiffness to static stiffness) can reflect the stiffness stability of a material or structure. The smaller the dynamic-static stiffness ratio of a material or structure, the better the stiffness stability of the material or structure; the higher the dynamic-static stiffness ratio of a material or structure, the worse the stiffness stability of the material or structure.

[0163] The above describes the relevant arrangement of the centering support plate 36 in the loudspeaker 30 , and the following describes the specific structure of the centering support plate 36 in conjunction with the relevant drawings.

[0164] Please refer to Figure 8 and Fig.12 , Fig.12 yes Figure 8 The centering support piece 36 shown is a partial cross-sectional structural schematic diagram cut along CC. Fig.12 It mainly shows a schematic diagram of the stacked structure of the connecting portion 36B of the centering support 36 .

[0165] In some embodiments, in the thickness direction (i.e., the Z-axis direction) of the centering support 36, the centering support 36 may include a first insulating layer 361, a conductive layer 362, and a second insulating layer 363 stacked in sequence. It is understood that the conductive layer 362 may be located between the first insulating layer 361 and the second insulating layer 363. The first end 36A of the centering support 36 may include a portion of the first insulating layer 361, a portion of the conductive layer 362, and a portion of the second insulating layer 363; the connecting portion 36B of the centering support 36 may include a portion of the first insulating layer 361, a portion of the conductive layer 362, and a portion of the second insulating layer 363; the second end 36C of the centering support 36 may include a portion of the first insulating layer 361, a portion of the conductive layer 362, and a portion of the second insulating layer 363.

[0166] The conductive layer 362 of the centering support 36 can be electrically connected to the voice coil 34. For example, the conductive layer 362 can be electrically connected to the voice coil 34 through a structure such as a pad, so that the centering support 36 can transmit an electrical signal to the voice coil 34. For example, the material of the conductive layer 362 can be copper foil, copper alloy, etc. In this way, the conductive layer 362 has a lower resistance and better conductivity, so that the centering support 36 is conducive to improving the sensitivity of the speaker 30.

[0167] Exemplarily, a portion of the second insulating layer 363 is fixedly connected to the first insulating layer 361 through the side of the conductive layer 362, so that the first insulating layer 361 and the second insulating layer 363 can be coated on the outer surface of the conductive layer 362 to prevent the conductive layer 362 from being short-circuited with other components, and is conducive to improving the corrosion resistance and fatigue resistance of the conductive layer 362 and the centering support 36. In the embodiment of the present application, the first insulating layer 361 and the second insulating layer 363 can cover most of the surface of the conductive layer 362, or may not completely cover the conductive layer 362. The structure of the first insulating layer 361 and the second insulating layer 363 can be set according to needs, and the present application does not strictly limit this.

[0168] Exemplarily, the material of the first insulating layer 361 and / or the second insulating layer 363 may be a polymer material, for example, a paraxylene polymer, polyimide (PI), etc. For example, the first insulating layer 361 and the second insulating layer 363 may be polyimide, the conductive layer 362 may be a copper foil, and the polyimide may cover and wrap the copper foil. At this time, the centering support plate 36 has good electrical conductivity, corrosion resistance and fatigue resistance. In the embodiment of the present application, the materials of the first insulating layer 361 and the second insulating layer 363 may be the same or different, and the present application does not strictly limit this.

[0169] In some embodiments, there may be multiple conductive layers 362. Multiple conductive layers 362 may be arranged between the first insulating layer 361 and the second insulating layer 363 along the Z-axis direction, and at least one first insulating layer 361 and / or one second insulating layer 363 may be included between adjacent conductive layers 362.

[0170] In some embodiments, the centering support 36 may further include a first reinforcement layer 364b and a first protective layer 365b. The first reinforcement layer 364b may be fixed to the side of the conductive layer 362b of the second insulating layer 363b of the connecting portion 36B facing away from the connecting portion 36B. The stiffness of the first reinforcement layer 364b is greater than the stiffness of the conductive layer 362. It can be understood that when the centering support 36 is subjected to force, the first reinforcement layer 364b is less likely to elastically deform than the conductive layer 362. In the embodiment of the present application, by providing a first reinforcement layer 364b with greater stiffness, the centering support 36 has greater stiffness, so that the centering support 36 has a stronger anti-torsion ability, and can effectively prevent the voice coil 34 from deflecting during vibration. That is, the centering support 36 has a better centering effect on the voice coil 34, so that the stability of the voice coil 34 and the speaker 30 is better.

[0171] In the embodiment of the present application, the centering support 36 can be electrically connected to the voice coil 34 and the external conductive structure through the conductive layer 362 to realize the conductive function of the centering support 36; at the same time, the rigidity of the centering support 36 can be improved through the first reinforcement layer 364b, so that the centering support 36 has a better centering effect on the voice coil 34. It can be understood that the conductive layer 362 and the first reinforcement layer 364b of the centering support 36 can function independently. In this way, even if the first reinforcement layer 364b is fatigue-fractured, the conductive layer 362 can still transmit electrical signals to the voice coil 34, and the voice coil 34 and the speaker 30 can continue to work.

[0172] In some embodiments, the material of the first reinforcement layer 364b can be a metal material, such as a titanium-copper alloy, non-magnetic stainless steel, etc. On the one hand, the metal material has a relatively large rigidity, so the first reinforcement layer 364b and the centering support plate 36 can have a relatively large rigidity, and the centering effect on the voice coil 34 is better. On the other hand, the rigidity of the metal material is not easily attenuated due to long-term repeated vibration, high temperature, etc., so the rigidity of the first reinforcement layer 364b and the centering support plate 36 is not easily attenuated, and the centering effect on the voice coil 34 is more stable. On the other hand, the dynamic and static rigidity of the metal material is relatively small, and the first reinforcement layer 364b has a relatively good rigidity stability, so the first reinforcement layer 364b and the centering support plate 36 have a relatively small rigidity change fluctuation in the process of following the vibration of the voice coil 34, which is conducive to improving the long-term stability and low-frequency acoustic performance of the speaker 30.

[0173] Generally, polymer materials are prone to creep relaxation under long-term repeated vibration and high temperature conditions, which leads to the attenuation of the stiffness of polymer materials; and the dynamic and static stiffness of polymer materials is relatively large, and its stiffness stability is poor. The first reinforcement layer 364b of the embodiment of the present application is made of metal material. Compared with the reinforcement structure of polymer materials, on the one hand, the stiffness of the centering support plate 36 of the embodiment of the present application is larger and the stiffness is not easy to attenuate, which has a better centering effect on the voice coil 34; on the other hand, the stiffness change fluctuation of the centering support plate 36 of the embodiment of the present application is small during the process of following the vibration of the voice coil 34, so that the long-term stability and low-frequency acoustic performance of the speaker 30 are better.

[0174] Exemplarily, a portion of the first protective layer 365b is fixed to the side of the second insulating layer 363b of the first reinforcing layer 364b facing away from the connecting portion 36B, and a portion is fixedly connected to the second insulating layer 363b of the connecting portion 36B through the side of the first reinforcing layer 364b. That is, the first protective layer 365b can cover the first reinforcing layer 364b. In this way, the first protective layer 365b can protect the first reinforcing layer 364b and prevent the first reinforcing layer 364b from being corroded. Exemplarily, the material of the first protective layer 365b can be a polymer material, such as a paraxylene polymer, polyimide (PI), etc. In some other embodiments, the centering support plate 36 may not include the first protective layer 365b. The first reinforcing layer 364b can be protected by coating or other methods.

[0175] In some embodiments, the thickness of the first reinforcing layer 364b may be greater than or equal to the thickness of the conductive layer 362b of the connecting portion 36B in the thickness direction of the centering support 36. In this embodiment, the first reinforcing layer 364b has a larger thickness in the thickness direction, which is beneficial to improving the rigidity of the first reinforcing layer 364b and the centering support 36, thereby facilitating the centering effect of the centering support 36 on the voice coil 34. Exemplarily, the thickness of the first reinforcing layer 364b may be greater than or equal to 12 μm.

[0176] In some embodiments, the width of the first reinforcing layer 364b may be greater than or equal to the width of the conductive layer 362b of the connecting portion 36B in a direction perpendicular to the extension direction of the centering damper 36 and in a direction perpendicular to the thickness direction of the centering damper 36. In this embodiment, the width of the first reinforcing layer 364b is relatively large in a direction perpendicular to the extension direction of the centering damper 36 and in a direction perpendicular to the thickness direction of the centering damper 36, which is beneficial to improving the rigidity of the first reinforcing layer 364b and the centering damper 36, thereby facilitating improving the centering effect of the centering damper 36 on the voice coil 34.

[0177] It is understandable that the size specifications of the centering support piece 36 do not have to strictly follow the above-mentioned size specifications. The specific size of the centering support piece 36 can be set according to specific needs, and the present application does not impose strict restrictions on this.

[0178] In some embodiments, along the thickness direction of the centering support 36, the connection portion 36B of the centering support 36 may further include a second reinforcement layer 366b and a second protective layer 367b. The second reinforcement layer 366b may be fixed to the side of the first insulating layer 361b of the connection portion 36B that faces away from the conductive layer 362b of the connection portion 36B. The stiffness of the second reinforcement layer 366b is greater than the stiffness of the conductive layer 362. In the embodiment of the present application, by providing a second reinforcement layer 366b with greater stiffness, the stiffness of the centering support 36 may be further increased to enhance the centering effect of the centering support 36 on the voice coil 34.

[0179] Exemplarily, the material of the second reinforcement layer 366b can be a metal material. For example, titanium-copper alloy, non-magnetic stainless steel, etc. In this way, on the one hand, the second reinforcement layer 366b and the centering support plate 36 can have greater rigidity, and have a better centering effect on the voice coil 34. On the other hand, the rigidity of the second reinforcement layer 366b and the centering support plate 36 is not easy to decay, and the centering effect on the voice coil 34 is more stable. On the other hand, the dynamic and static rigidity of the second reinforcement layer 366b is relatively small, and the rigidity stability of the second reinforcement layer 366b is better, so that the rigidity change fluctuation of the second reinforcement layer 366b and the centering support plate 36 is small during the process of following the vibration of the voice coil 34, which is beneficial to improve the long-term stability and low-frequency acoustic performance of the speaker 30.

[0180] Exemplarily, a portion of the second protective layer 367b is fixed to the side of the first insulating layer 361b of the second reinforcement layer 366b facing away from the connection portion 36B, and a portion is fixedly connected to the first insulating layer 361b of the connection portion 36B through the side of the second reinforcement layer 366b. That is, the second protective layer 367b can cover the second reinforcement layer 366b. In this way, the second reinforcement layer 366b can protect the second reinforcement layer 366b and prevent the second reinforcement layer 366b from being corroded. Exemplarily, the material of the second protective layer 367b can be a polymer material, such as a paraxylene polymer, polyimide (PI), etc. In some other embodiments, the centering support plate 36 may also not include the second protective layer 367b. The second reinforcement layer 366b can be protected by coating or other methods.

[0181] In some embodiments, the thickness of the second reinforcing layer 366b may be greater than or equal to the thickness of the conductive layer 362b of the connecting portion 36B in the thickness direction of the centering arm 36. In this embodiment, the second reinforcing layer 366b has a larger thickness in the thickness direction, which is beneficial to improving the rigidity of the centering arm 36, thereby facilitating the centering effect of the centering arm 36 on the voice coil 34. Exemplarily, the thickness of the second reinforcing layer 366b may be greater than or equal to 12 μm.

[0182] In some embodiments, the width of the second reinforcing layer 366b may be greater than or equal to the width of the conductive layer 362b of the connecting portion 36B in a direction perpendicular to the extension direction of the centering arm 36 and perpendicular to the thickness direction of the centering arm 36. In this embodiment, the second reinforcing layer 366b has a larger width, which is beneficial to improving the rigidity of the centering arm 36, thereby facilitating the centering effect of the centering arm 36 on the voice coil 34.

[0183] In some embodiments, the first reinforcement layer 364b and the second reinforcement layer 366b can be centrally symmetrically distributed relative to the conductive layer 362. In this way, on the one hand, the first reinforcement layer 364b and the second reinforcement layer 366b provide good stiffness symmetry, which can ensure the stiffness symmetry of the entire speaker system during the reciprocating vibration process, thereby reducing the risk of deflection of the voice coil 34; on the other hand, the conductive layer 362 can be located at the center of the entire laminated structure. That is, the conductive layer 362 can be the neutral layer of the laminated structure. At this time, the conductive layer 362 is subjected to less stress and is not prone to fatigue fracture, so that the conductive function of the centering support 36 is not prone to failure.

[0184] In some other embodiments, the centering support plate 36 may not include the second reinforcement layer 366b and the second protection layer 367b, and this application does not make a strict limitation on this.

[0185] Please refer to Fig.13 , Fig.13 yes Figure 8 The centering support piece 36 shown is a partial cross-sectional structural schematic diagram cut along DD. Fig.13 The dotted lines are used to schematically distinguish the first insulating layer 361a of the first end 36A and the first insulating layer 361b of the connecting portion 36B, the conductive layer 362a of the first end 36A and the conductive layer 362b of the connecting portion 36B, and the second insulating layer 363a of the first end 36A and the second insulating layer 363b of the connecting portion 36B.

[0186] In some embodiments, the centering support plate 36 may further include a third reinforcement layer 364a and a third protective layer 365a. The third reinforcement layer 364a may be fixed to the side of the second insulating layer 363a of the first end 36A that faces away from the conductive layer 362a of the first end 36A, and may be disposed in the same layer as the first reinforcement layer 364b of the connecting portion 36B. In some examples, the third reinforcement layer 364a and the first reinforcement layer 364b may be formed by the same process. In other examples, the third reinforcement layer 364a and the first reinforcement layer 364b may also be formed separately by multiple processes, which is not strictly limited in the embodiments of the present application.

[0187] Exemplarily, the stiffness of the third reinforcement layer 364a is greater than the stiffness of the conductive layer 362. The third protective layer 365a may cover the third reinforcement layer 364a. The materials, structures, and arrangements of the third reinforcement layer 364a and the third protective layer 365a may refer to the materials, structures, and arrangements of the first reinforcement layer 364b and the first protective layer 365b in the above embodiment, which will not be described in detail here. In this embodiment, by providing a third reinforcement layer 364a with greater stiffness at the first end 36A of the centering support plate 36, the stiffness of the centering support plate 36 may be further improved, thereby improving the centering effect of the centering support plate 36 on the voice coil 34.

[0188] In some embodiments, the centering support plate 36 may further include a fifth reinforcement layer 366a and a fifth protective layer 367a. The fifth reinforcement layer 366a may be fixed to the side of the first insulating layer 361a of the first end 36A that faces away from the conductive layer 362a of the first end 36A, and may be disposed in the same layer as the second reinforcement layer 366b of the connecting portion 36B. In some examples, the fifth reinforcement layer 366a and the second reinforcement layer 366b may be formed by the same process. In other examples, the fifth reinforcement layer 366a and the second reinforcement layer 366b may also be formed separately by multiple processes, which is not strictly limited in the embodiments of the present application.

[0189] Exemplarily, the stiffness of the fifth reinforcement layer 366a is greater than the stiffness of the conductive layer 362. The fifth protective layer 367a may cover the fifth reinforcement layer 366a. The materials, structures, and arrangements of the fifth reinforcement layer 366a and the fifth protective layer 367a may refer to the materials, structures, and arrangements of the second reinforcement layer 366b and the second protective layer 367b in the above embodiment, which will not be described in detail here. In this embodiment, by providing a fifth reinforcement layer 366a with greater stiffness at the first end 36A of the centering support plate 36, the stiffness of the centering support plate 36 may be further improved, thereby improving the centering effect of the centering support plate 36 on the voice coil 34.

[0190] Please refer to Fig.14 , Fig.14 yes Figure 8The centering support piece 36 shown is a partial cross-sectional structural schematic diagram cut along EE. Fig.14 Dashed lines are used to schematically distinguish the first insulating layer 361b of the connecting portion 36B and the first insulating layer 361c of the second end 36C, the conductive layer 362b of the connecting portion 36B and the conductive layer 362c of the second end 36C, the second insulating layer 363b of the connecting portion 36B and the second insulating layer 363c of the second end 36C.

[0191] In some embodiments, the centering support plate 36 may further include a fourth reinforcement layer 364c and a fourth protective layer 365c. The fourth reinforcement layer 364c may be fixed to the side of the second insulating layer 363c of the second end 36C that faces away from the conductive layer 362c of the second end 36C, and may be disposed in the same layer as the first reinforcement layer 364b of the connecting portion 36B. In some examples, the fourth reinforcement layer 364c and the first reinforcement layer 364b may be formed by the same process. In other examples, the fourth reinforcement layer 364c and the first reinforcement layer 364b may also be formed separately by multiple processes, which is not strictly limited in the embodiments of the present application.

[0192] Exemplarily, the stiffness of the fourth reinforcement layer 364c is greater than the stiffness of the conductive layer 362. The fourth protective layer 365c may cover the fourth reinforcement layer 364c. The materials, structures, and arrangements of the fourth reinforcement layer 364c and the fourth protective layer 365c may refer to the materials, structures, and arrangements of the first reinforcement layer 364b and the first protective layer 365b in the above embodiment, which will not be described in detail here. In this embodiment, by providing a fourth reinforcement layer 364c with greater stiffness at the second end 36C of the centering support plate 36, the stiffness of the centering support plate 36 may be further improved, thereby improving the centering effect of the centering support plate 36 on the voice coil 34.

[0193] In some embodiments, the centering support plate 36 may further include a sixth reinforcement layer 366c and a sixth protective layer 367c. The sixth reinforcement layer 366c may be fixed to the side of the first insulating layer 361c of the second end 36C that faces away from the conductive layer 362c of the second end 36C, and may be disposed in the same layer as the second reinforcement layer 366b of the connecting portion 36B. In some examples, the sixth reinforcement layer 366c and the second reinforcement layer 366b may be formed by the same process. In other examples, the sixth reinforcement layer 366c and the second reinforcement layer 366b may also be formed separately by multiple processes, which is not strictly limited in the embodiments of the present application.

[0194] Exemplarily, the stiffness of the sixth reinforcement layer 366c is greater than the stiffness of the conductive layer 362. The sixth protective layer 367c may cover the sixth reinforcement layer 366c. The materials, structures, and arrangements of the sixth reinforcement layer 366c and the sixth protective layer 367c may refer to the materials, structures, and arrangements of the second reinforcement layer 366b and the second protective layer 367b in the above embodiment, which will not be described in detail here. In this embodiment, by providing a sixth reinforcement layer 366c with greater stiffness at the second end 36C of the centering support plate 36, the stiffness of the centering support plate 36 may be further improved, thereby improving the centering effect of the centering support plate 36 on the voice coil 34.

[0195] Please refer to Figure 8 , Fig.15 and Fig.16 , Fig.15 yes Figure 8 The schematic diagram of the structure of the centering support piece 36 at another angle is shown. Fig.16 yes Figure 8 The centering support piece 36 shown is a partial cross-sectional structural schematic diagram in some embodiments. Fig.16 It mainly shows a partial cross-sectional structural schematic diagram of the centering support piece 36 cut along its extending direction.

[0196] In some embodiments, the centering support 36 may further include a first pad 368 and a second pad 369. The first pad 368 may be embedded in the first insulating layer 361a and the fifth protective layer 367a of the first end 36A of the centering support 36, and electrically connected to the conductive layer 362a of the first end 36A of the centering support 36. The first pad 368 may be used to electrically connect to the conductive structure outside the speaker 30. The second pad 369 may be embedded in the second insulating layer 363c and the fourth protective layer 365c of the second end 36C of the centering support 36, and electrically connected to the conductive layer 362c of the second end 36C of the centering support 36. The second pad 369 may be used to electrically connect to the voice coil 34. It can be understood that the first solder pad 368 can be fixed to the bottom side of the conductive layer 362, and the second solder pad 369 can be fixed to the top side of the conductive layer 362, so that when the centering support plate 36 follows the reciprocating vibration of the voice coil 34, the first solder pad 368 and the second solder pad 369 are not easy to interfere with other structures, and the electrical connection reliability of the centering support plate 36 and the voice coil 34 and the external conductive structure is better.

[0197] It can be understood that the conductive layer 362a of the first end 36A can be exposed relative to the first insulating layer 361a of the first end 36A, that is, a portion of the first end 36A may not cover the first insulating layer 361a to form a welding area. The first pad 368 can be located in the welding area of ​​the first end 36A and fixedly connected to the conductive layer 362a. The conductive layer 362c of the second end 36C can be exposed relative to the second insulating layer 363c of the second end 36C, that is, a portion of the second end 36C may not cover the second insulating layer 363c to form a welding area. The second pad 369 can be located in the welding area of ​​the second end 36C and fixedly connected to the conductive layer 362c.

[0198] In the embodiment of the present application, a first pad 368 is provided at the first end 36A of the centering support 36 to be electrically connected to the conductive structure outside the speaker 30, and a second pad 369 is provided at the second end 36C of the centering support 36 to be electrically connected to the voice coil 34, so that the voice coil 34 can be electrically connected to the conductive structure outside the speaker 30 through the second pad 369, the conductive layer 362 and the first pad 368. Secondly, the structure and assembly process of the speaker 30 are relatively simple and the cost is low.

[0199] Exemplarily, the first pad 368 may be spaced apart from the fifth reinforcement layer 366a of the first end 36A. A portion of the fifth protective layer 367a may be located between the first pad 368 and the fifth reinforcement layer 366a to separate and insulate the fifth reinforcement layer 366a from the first pad 368. When the speaker 30 is powered on, no electrical loop is formed between the conductive layer 362a of the first end 36A, the first pad 368, and the fifth reinforcement layer 366a, thereby reducing the risk of a short circuit in the centering support 36.

[0200] Exemplarily, the second pad 369 is spaced apart from the fourth reinforcement layer 364c at the second end 36C. A portion of the fourth protective layer 365c may be located between the second pad 369 and the fourth reinforcement layer 364c to separate and insulate the fourth reinforcement layer 364c from the second pad 369. When the speaker 30 is powered on, no electrical loop is formed between the conductive layer 362c at the second end 36C, the second pad 369, and the fourth reinforcement layer 364c, thereby reducing the risk of a short circuit in the centering support 36.

[0201] See also Fig.17 , Fig.17 yes Figure 8 The centering support piece 36 shown is a schematic diagram of a partial cross-sectional structure in some other embodiments. Fig.17 It mainly shows a partial cross-sectional structural schematic diagram of the centering support piece 36 cut along its extending direction.

[0202] In some embodiments, the first pad 368 may be embedded in the second insulating layer 363a and the third protective layer 365a of the first end 36A of the centering support 36, and electrically connected to the conductive layer 362a of the first end 36A of the centering support 36. The second pad 369 may be embedded in the first insulating layer 361c and the sixth protective layer 367c of the second end 36C of the centering support 36, and electrically connected to the conductive layer 362c of the second end 36C of the centering support 36. It is understood that the first pad 368 may be fixed to the top side of the conductive layer 362, and the second pad 369 may be fixed to the bottom side of the conductive layer 362.

[0203] Exemplarily, the first pad 368 is spaced apart from the third reinforcement layer 364a of the first end 36A. A portion of the third protective layer 365a may be located between the first pad 368 and the third reinforcement layer 364a to separate and insulate the third reinforcement layer 364a from the first pad 368. When the speaker 30 is powered on, no electrical loop is formed between the conductive layer 362a of the first end 36A, the first pad 368, and the third reinforcement layer 364a, thereby reducing the risk of a short circuit in the centering support 36.

[0204] Exemplarily, the second pad 369 is spaced apart from the sixth reinforcement layer 366c of the second end 36C. A portion of the sixth protective layer 367c may be located between the second pad 369 and the sixth reinforcement layer 366c to separate and insulate the sixth reinforcement layer 366c from the second pad 369. When the speaker 30 is powered on, no electrical loop is formed between the conductive layer 362c of the second end 36C, the second pad 369, and the sixth reinforcement layer 366c, thereby reducing the risk of a short circuit in the centering support 36.

[0205] See also Fig.18 , Fig.18 yes Figure 8 The centering support piece 36 shown is a schematic diagram of a partial cross-sectional structure in some other embodiments. Fig.18 It mainly shows a partial cross-sectional structural schematic diagram of the centering support piece 36 cut along its extending direction.

[0206] In some embodiments, the first pad 368 may be embedded in the second insulating layer 363a and the third protective layer 365a of the first end 36A of the centering support 36, and electrically connected to the conductive layer 362a of the first end 36A of the centering support 36. The second pad 369 may be embedded in the second insulating layer 363c and the fourth protective layer 365c of the second end 36C of the centering support 36, and electrically connected to the conductive layer 362c of the second end 36C of the centering support 36. It is understood that both the first pad 368 and the second pad 369 may be fixed to the top side of the conductive layer 362.

[0207] Exemplarily, the first pad 368 is spaced apart from the third reinforcement layer 364a of the first end 36A. A portion of the third protection layer 365a may be located between the first pad 368 and the third reinforcement layer 364a to separate and insulate the third reinforcement layer 364a from the first pad 368. The second pad 369 is spaced apart from the fourth reinforcement layer 364c of the second end 36C. A portion of the fourth protection layer 365c may be located between the second pad 369 and the fourth reinforcement layer 364c to separate and insulate the fourth reinforcement layer 364c from the second pad 369.

[0208] See also Fig.19 , Fig.19 yes Figure 8 The centering support piece 36 shown is a schematic diagram of a partial cross-sectional structure in some other embodiments. Fig.19 It mainly shows a partial cross-sectional structural schematic diagram of the centering support piece 36 cut along its extending direction.

[0209] In some embodiments, the first pad 368 may be embedded in the first insulating layer 361a and the fifth protective layer 367a of the first end 36A of the centering support 36, and electrically connected to the conductive layer 362a of the first end 36A of the centering support 36. The second pad 369 may be embedded in the first insulating layer 361c and the sixth protective layer 367c of the second end 36C of the centering support 36, and electrically connected to the conductive layer 362c of the second end 36C of the centering support 36. It is understood that both the first pad 368 and the second pad 369 may be fixed to the bottom side of the conductive layer 362.

[0210] Exemplarily, the first pad 368 may be spaced apart from the fifth reinforcement layer 366a of the first end 36A. A portion of the fifth protection layer 367a may be located between the first pad 368 and the fifth reinforcement layer 366a to separate and insulate the fifth reinforcement layer 366a from the first pad 368. The second pad 369 may be spaced apart from the sixth reinforcement layer 366c of the second end 36C. A portion of the sixth protection layer 367c may be located between the second pad 369 and the sixth reinforcement layer 366c to separate and insulate the sixth reinforcement layer 366c from the second pad 369.

[0211] It can be understood that in the above embodiment, the laminated structure of the first end 36A, the connecting portion 36B and the second end 36C of the centering support 36 is provided with a reinforcement structure (for example, the first reinforcement layer 364b, the third reinforcement layer 364a, the fourth reinforcement layer 364c, etc.) to improve the rigidity of the centering support 36. In some other embodiments, the first end 36A and the second end 36C of the centering support 36 may not be provided with a reinforcement structure, that is, the first end 36A of the centering support 36 may not include the third reinforcement layer 364a and the fifth reinforcement layer 366a, and the second end 36C of the centering support 36 may not include the fourth reinforcement layer 364c and the sixth reinforcement layer 366c.

[0212] The above mainly introduces the laminated structure of the centering support piece 36, and the shape setting of the centering support piece 36 will be introduced below in conjunction with the relevant drawings.

[0213] See also Fig. 20 , Fig. 20 yes Figure 8 A plan view of the spider 36 is shown.

[0214] In some embodiments, the connection portion 36B may include a first connection portion 361B, a second connection portion 362B, and a third connection portion 363B connected in sequence. The first connection portion 361B is fixedly connected to the first end 36A. The third connection portion 363B is fixedly connected to the second end 36C. The second connection portion 362B is S-shaped and is at least partially located between the second end 36C and the third connection portion 363B.

[0215] In the embodiment of the present application, the second connection portion 362B of the centering support 36 is connected between the first connection portion 361B and the third connection portion 363B, and is the main force-bearing deformation structure. By setting the second connection portion 362B to be S-shaped, the connection portion 36B can be a curved structure with multiple bends, so that the connection portion 36B and the centering support 36 can have greater lateral rigidity, and the stability of the centering support 36 and the centering ability of the voice coil 34 are better. In addition, the bend can make the second connection portion 362B have a longer extension length, so that the connection portion 36B can have a sufficient deformation length to meet the amplitude requirements of the voice coil 34.

[0216] Exemplarily, the second connection portion 362B may include a first bending section 3621B and a second bending section 3622B. The first bending section 3621B is connected between the first connection portion 361B and the second bending section 3622B, and the bending direction of the first bending section 3621B may be opposite to the bending direction of the second bending section 3622B. In the embodiment of the present application, by setting the position and shape of the first bending section 3621B and the second bending section 3622B, the space between the first connection portion 361B and the third connection portion 363B can be fully utilized, and it is beneficial for the first bending section 3621B and the second bending section 3622B to have a larger radius of curvature, so as to reduce the risk of stress concentration in the first bending section 3621B and the second bending section 3622B.

[0217] Exemplarily, the first bending section 3621B may be an arc-shaped structure. The first bending section 3621B may have an inner normal and an outer normal. The first bending section 3621B may be adjacent to the third connection portion 363B. In the XY plane, the first bending section 3621B has a side close to the third connection portion 363B and a side away from the third connection portion 363B. The inner normal of the first bending section 3621B may be toward the side away from the third connection portion 363B. It is understandable that the first bending section 3621B may not need the inner normal of each location to be toward the side away from the third connection portion 363B, and the inner normal of the first bending section 3621B may be toward the side away from the third connection portion 363B in most of the structures as a whole. In the embodiment of the present application, by setting the structure of the first bending section 3621B, the first bending section 3621B can make full use of the space between the second end 36C and the third connecting portion 363B for setting, and it is beneficial for the first bending section 3621B to have a larger curvature radius to reduce the risk of stress concentration in the first bending section 3621B.

[0218] Exemplarily, the second bending section 3622B may be an arc-shaped structure. The second bending section 3622B may have an inner normal and an outer normal. The second bending section 3622B may be adjacent to the first connection portion 361B. In the XY plane, the second bending section 3622B may have a side close to the third connection portion 363B and a side away from the third connection portion 363B. The inner normal of the second bending section 3622B may be toward the side close to the third connection portion 363B. It is understandable that the second bending section 3622B may not necessarily have an inner normal at every location facing the side close to the third connection portion 363B, and the second bending section 3622B may have an inner normal of most structures facing the side close to the third connection portion 363B as a whole. In the embodiment of the present application, by setting the structure of the second bending section 3622B, the second bending section 3622B can make full use of the space between the second end 36C and the third connecting portion 363B for setting, and it is beneficial for the second bending section 3622B to have a larger curvature radius to reduce the risk of stress concentration in the second bending section 3622B.

[0219] In some embodiments, the width-to-thickness ratio of the connecting portion 36B is in the range of 3 to 8. That is, the width-to-thickness ratio of each cross section of the connecting portion 36B is in the range of 3 to 8, and the width-to-thickness ratio of each cross section may be the same or different. For example, the cross section of the connecting portion 36B may be the same everywhere; or, different positions of the connecting portion 36B may have cross sections of different shapes; or, the connecting portion 36B may also have cross sections of different sizes at different positions. The cross section of the connecting portion 36B only needs to satisfy the width-to-thickness ratio in the range of 3 to 8, and the present application does not strictly limit the cross-sectional shape of the connecting portion 36B.

[0220] Exemplarily, the cross section of the connecting portion 36B can be a rectangle. At this time, the cross section of the connecting portion 36B is a cross section perpendicular to its extension direction, the width of the cross section of the connecting portion 36B is its width dimension in the transverse direction (i.e., perpendicular to the extension direction of the connecting portion 36B and perpendicular to the thickness direction of the connecting portion 36B), the thickness of the connecting portion 36B is the thickness dimension in the thickness direction (i.e., the Z-axis direction), and the width-to-thickness ratio of the connecting portion 36B is the ratio of the width dimension to the thickness dimension of the connecting portion 36B. At this time, the main body material of the connecting portion 36B can be consistent at various places. In some other embodiments, the cross-sectional shape of the connecting portion 36B can be an ellipse or other shapes, then the width-to-thickness ratio of the connecting portion 36B can be the ratio of equivalent width to equivalent thickness, and this application does not strictly limit this.

[0221] In the embodiment of the present application, based on the structure of the connecting portion 36B described above, by setting a suitable width-to-thickness ratio, the lateral stiffness of the connecting portion 36B is greater, which has a better centering effect on the voice coil 34, thereby making the speaker 30 have higher sensitivity and better stability.

[0222] In some embodiments, the radius of curvature of the second connection portion 362B may be negatively correlated with the width-to-thickness ratio. Since stress concentration is easily generated when the second connection portion 362B is subjected to force in an area with a small radius of curvature, by associating the radius of curvature of the second connection portion 362B with the width-to-thickness ratio, the width-to-thickness ratio of the portion of the second connection portion 362B with a small radius of curvature (i.e., a large degree of curvature) may be larger, thereby reducing stress concentration in the second connection portion 362B and making the stress distribution in the second connection portion 362B more uniform. For example, the first bending section 3621B and the second bending section 3622B in the second connection portion 362B may both have a large radius of curvature at both ends and a small radius of curvature in the middle, and both have a small width-to-thickness ratio of the cross section at both ends and a large width-to-thickness ratio in the middle. In this way, the radius of curvature of the second connection portion 362B may be as large as possible to reduce the local stress of the second connection portion 362B when it is deformed, thereby improving the fatigue resistance of the second connection portion 362B and improving the service life of the centering support 36.

[0223] In the embodiment of the present application, the radius of curvature and the width-to-thickness ratio of the second connection portion 362B are associated with each other so that the deformation degree of the second connection portion 362B at various locations can be kept basically consistent when subjected to longitudinal force, thereby achieving a more uniform stress distribution at various locations of the second connection portion 362B, thereby avoiding stress concentration and helping to extend the life of the second connection portion 362B and the centering support plate 36.

[0224] In some embodiments, the first connection portion 361B and the third connection portion 363B may also satisfy the negative correlation between the radius of curvature and the width-to-thickness ratio. In this case, the entire connection portion 36B satisfies the relationship between the radius of curvature and the width-to-thickness ratio. It is understandable that 90% of the connection portion 36B only needs to meet the above rule, and it is not necessary for each part to meet the above rule. For example, the radius of curvature and the width-to-thickness ratio of the root of the first connection portion 361B and the root of the third connection portion 363B may not be easy to measure and may not meet the above rule.

[0225] In some embodiments, the second connection portion 362B can be a variable cross-section setting. In the extension direction from the first connection portion 361B to the third connection portion 363B, the width-to-thickness ratio of the second connection portion 362B increases, decreases, increases, and decreases. For example, on the first bending section 3621B and the second bending section 3622B, both have a small width-to-thickness ratio at the two ends and a large width-to-thickness ratio in the middle, and the change in the width-to-thickness ratio can be continuous, and the width-to-thickness ratio at each location can be different, and the change in the width-to-thickness ratio can cover most of the structure of the second connection portion 362B. In some other embodiments, on the first bending section 3621B and the second bending section 3622B, both can have a small width-to-thickness ratio at the two ends and a large width-to-thickness ratio in the middle. The difference is that the middle of both can have a fixed width-to-thickness ratio. At this time, the change in the width-to-thickness ratio of the first bending section 3621B and the second bending section 3622B is mainly located at the two ends of the two.

[0226] In the embodiment of the present application, by setting the cross-section of the second connecting portion 362B to a variable cross-section, the width-to-thickness ratios of different positions of the second connecting portion 362B can be made different, so that when the entire second connecting portion 362B is subjected to longitudinal force, the deformation of each part is more uniform, thereby preventing stress concentration and helping to increase the life of the centering support plate 36.

[0227] In some embodiments, the first reinforcement layer 364b can be set as a variable cross-section. In the extension direction from the first connection part 361B to the third connection part 363B, the width of the first reinforcement layer 364b can increase, decrease, increase, and decrease. It can be understood that the first bending section 3621B and the second bending section 3622B in the second connection part 362B can both have a large radius of curvature at both ends and a small radius of curvature in the middle, then the width of the first reinforcement layer 364b at both ends is small and the width in the middle is large. Among them, the radius of curvature of the second connection part 362B can be continuously changed, and the width of the first reinforcement layer 364b can also be continuously changed.

[0228] In the embodiment of the present application, by increasing the width of the first reinforcement layer 364b at positions on the second connecting portion 362B where stress concentration is likely to occur (for example, the middle position of the first bending section 3621B and the middle position of the second bending section 3622B), the stiffness of the second connecting portion 362B at these positions where stress concentration is likely to occur is increased, thereby reducing the risk of fracture failure of the second connecting portion 362B.

[0229] In the embodiment of the present application, along the X-axis direction, that is, along the direction perpendicular to the thickness direction of the centering support piece 36 and the extension direction of the centering support piece 36, the cross-sectional shape of the first reinforcing layer 364b of the second connecting portion 362B can be rectangular, trapezoidal, elliptical, etc., or the cross-sectional shape of the first reinforcing layer 364b of the second connecting portion 362B can be a combination of the above-mentioned multiple shapes, and the present application does not strictly limit this.

[0230] In some embodiments, the first connecting portion 361B may include a first segment 3611B, a second segment 3612B, and a third segment 3613B connected in sequence. The first segment 3611B may be a straight segment. The first segment 3611B is connected to the first end 36A and extends from the first end 36A toward the second end 36C. The second segment 3612B may be an arc segment. The third segment 3613B may be a straight segment. The third segment 3613B extends equidistantly along the extension direction of the outer wall of the second end 36C and is fixedly connected to the second connecting portion 36B.

[0231] In the embodiment of the present application, by setting the shape of the first segment 3611B, the second segment 3612B and the second segment 3612B, the first connecting portion 361B is located at the edge of the space between the first end 36A and the second end 36C to maximize the use of the space, which is beneficial for the connecting portion 36B to have a longer extension length, thereby facilitating the connecting portion 36B to have a larger curvature radius and better deformation ability of the connecting portion 36B.

[0232] In some embodiments, the third connection portion 363B may include a fourth segment 3631B, a fifth segment 3632B, and a sixth segment 3633B. The third segment may be a straight segment. The third segment may be connected to the second end 36C and extend from the second end 36C toward the first end 36A. The fifth segment 3632B may be an arc segment. The sixth segment 3633B may be a straight end. The sixth segment 3633B extends equidistantly along the outer wall of the first end 36A and is fixedly connected to the second connection portion 36B.

[0233] In the embodiment of the present application, by setting the shapes of the third segment, the fourth segment 3631B and the fifth segment 3632B, the third connecting portion 363B is located at the edge of the space between the first end 36A and the second end 36C to maximize the use of the space, which is beneficial for the connecting portion 36B to have a longer extension length, thereby facilitating the connecting portion 36B to have a larger curvature radius and better deformation ability of the connecting portion 36B.

[0234] In some embodiments, the first end 36A may include a first end 361A, a second end 362A, and a third end 363A connected in sequence. The end of the first end 361A away from the second end 362A is fixedly connected to the first connection portion 361B of the connection portion 36B. Exemplarily, the first end 361A, the second end 362A, and the third end 363A may be an integrally formed structure for ease of production.

[0235] For example, the second end portion 362A may be an arc-shaped structure, and the center of the arc may be located on a side close to the second end 36C. The second end portion 362A may be used to be fixedly connected to the corner of the housing 31 (eg, Figure 5 When the corners of the housing 31 are arc-shaped, the arc-shaped second end 362A is more easily adapted to the housing 31. In this way, the fixing area between the second end 362A and the housing 31 can be increased to ensure the reliability of the fixed connection between the second end 362A and the housing 31.

[0236] Exemplarily, the third end 363A extends relative to the first end 361A toward the second end 36C to increase the connection area between the centering support piece 36 and the shell 31 and ensure reliability of the fixed connection between the first end 36A of the centering support piece 36 and the shell 31 .

[0237] In some embodiments, the second end 36C may include a fourth end 361C and a fifth end 362C. The fourth end 361C is located between the fifth end 362C and the third connection portion 363B, and is fixedly connected to the fifth end 362C and the third connection portion 363B. Exemplarily, the second end 36C may be an integrally formed structure for ease of production.

[0238] For example, the fourth end portion 361C may be an arc-shaped structure, and its center may be located on a side away from the first end 36A. The fourth end portion 361C may be used to be fixedly connected to the corner of the voice coil 34 (eg, Figure 5 When the corners of the voice coil 34 are arc-shaped, the arc-shaped fourth end 361C is more easily adapted to the voice coil 34. In this way, the fixing area between the fourth end 361C and the voice coil 34 can be increased to ensure the reliability of the fixed connection between the fourth end 361C and the voice coil 34.

[0239] For example, the fifth end portion 362C may be in a linear structure. The extension direction of the fifth end portion 362C may be toward a side close to the first end 36A. Figure 532 ), the fifth end 362C can be relatively exposed, that is, the fourth end 361C can be attached to the end of the voice coil 34 away from the diaphragm 32, and the fifth end 362C can not be attached to the end of the voice coil 34 away from the diaphragm 32. At this time, the fifth end 362C can be used as a structure electrically connected to the voice coil 34, which facilitates the electrical connection between the second end 36C and the voice coil 34. For example, the connection portion 341 (as shown in FIG. 1 ) of the voice coil 34 can be connected to the voice coil 34. Figure 5 The fifth end portion 362C is connected to the voice coil 34 through a wire, or the connection portion 341 of the voice coil 34 is directly welded to the fifth end portion 362C, which is not strictly limited in the present embodiment of the present application.

[0240] Exemplarily, the first connection portion 361B may be fixedly connected to the first end portion 361A of the first end 36A. In the X-axis direction, the first segment 3611B of the first connection portion 361B may be located between the first end portion 361A and the second end 36C of the first end 36A. The second connection portion 362B is disposed opposite to the first end 36A. In the Y-axis direction, the third segment 3613B of the first connection portion 361B may be located between the fifth end portion 362C of the second end 36C and the second bending segment 3622B of the second connection portion 362B.

[0241] Exemplarily, the third connection portion 363B is fixedly connected to the fourth end portion 361C of the second end 36C. In the Y-axis direction, the sixth segment 3633B of the third connection portion 363B may be located between the third end portion 363A of the first end 36A and the second connection portion 362B.

[0242] In the embodiment of the present application, by setting the shapes of the first end 36A, the connecting portion 36B and the second end 36C, the connecting portion 36B can make full use of the space between the first end 36A and the second end 36C for arrangement, so as to extend the extension length of the connecting portion 36B and enhance the deformation capacity of the centering support piece 36; and the connecting portion 36B can have a larger curvature radius to reduce the risk of stress concentration in the connecting portion 36B.

[0243] Please refer to Figure 20 to Figure 22 , Fig.21 yes Figure 8 The stress distribution simulation diagram of the partial structure of the centering support piece 36 is shown in FIG. Fig. 22 yes Figure 8 The stress distribution simulation diagram of the partial structure of the centering support plate 36 is shown. Fig.21 is a stress distribution simulation diagram of the conductive layer 362 of the centering support plate 36, Fig. 22 It is a stress distribution simulation diagram of the first reinforcement layer 364b, the third reinforcement layer 364a and the fourth reinforcement layer 364c of the centering support plate 36. The darker the color, the greater the stress.

[0244] Depend on Fig.21 It can be seen that in some embodiments, the stress distribution of the conductive layer 362 of the centering support 36 is relatively uniform. Among them, the conductive layer 362b located at the bend of the connecting portion 36B is subjected to greater stress, but the maximum stress does not exceed 160Mpa. In the embodiment of the present application, by setting the first reinforcement layer 364b and the second reinforcement layer 366b to be centrally symmetrically distributed relative to the conductive layer 362, the conductive layer 362 can be the neutral layer of the laminated structure of the centering support 36. At this time, the conductive layer 362 is subjected to less stress, and the conductive layer 362 is not prone to fracture and failure, so that the conductive performance of the centering support 36 is relatively stable.

[0245] Depend on Fig. 22 It can be seen that in some embodiments, the stress distribution of the first reinforcement layer 364b of the centering support plate 36 is relatively uniform. Among them, the first reinforcement layer 364b located at the bend of the connection part 36B is subjected to greater stress, but the maximum stress does not exceed 450Mpa. In the present application, by increasing the thickness and width of the first reinforcement layer 364b located at the bend of the connection part 36B, that is, increasing the thickness and width of the position of greater stress on the first reinforcement layer 364b, the first reinforcement layer 364b has greater rigidity at the position of greater stress, so that the first reinforcement layer 364b is not prone to fatigue fracture at the above position, which is conducive to improving the fatigue resistance of the centering support plate 36. Among them, the width of the first reinforcement layer 364b can be the width dimension of the first reinforcement layer 364b in the direction perpendicular to its thickness direction and perpendicular to its extension direction.

[0246] See also Fig.23 , Fig.23 yes Figure 8 The centering support piece 36 is shown in other embodiments. Fig.23 The centering blade 36 shown may include Figure 8 Most of the technical features of the centering support plate 36 are shown. The following mainly describes the difference between the two, and most of the same technical contents of the two are not repeated.

[0247] In some embodiments, Fig.23 The centering blade 36 shown is Figure 8 The main difference of the centering web 36 shown is the structural arrangement of the connecting portion 36B.

[0248] Exemplarily, the connection portion 36B may include a first connection portion 361B, a second connection portion 362B, and a third connection portion 363B connected in sequence. The first connection portion 361B is fixedly connected to the first end 36A. The third connection portion 363B is fixedly connected to the second end 36C. The second connection portion 362B is S-shaped and is at least partially located between the second end 36C and the first connection portion 361B.

[0249] In the embodiment of the present application, by setting the second connecting portion 362B to be S-shaped, the connecting portion 36B can be a curved structure with multiple bends, so that the connecting portion 36B and the centering arm 36 can have greater lateral rigidity, and the stability of the centering arm 36 and the centering ability of the voice coil 34 are better. In addition, the bend can make the second connecting portion 362B have a longer extension length, so that the connecting portion 36B can have a sufficient deformation length to meet the amplitude requirements of the voice coil 34.

[0250] For example, in the X-axis direction, a portion of the structure of the first connection portion 361B may be located between the first end 36A and the second end 36C, and a portion of the structure may be located between the second connection portion 362B and the first end 36A. In the Y-axis direction, a portion of the structure of the first connection portion 361B may be located between the first end 36A and the second connection portion 362B. The third connection portion 363B may be located between the second connection portion 362B and the second end 36C. The centering support 36 may better utilize the space between the first end 36A and the second end 36C to arrange the connection portion 36B, so as to extend the extension length of the connection portion 36B and enhance the deformation capacity of the centering support 36; and the connection portion 36B may have a larger radius of curvature to reduce the risk of stress concentration in the connection portion 36B.

[0251] Exemplarily, the second connection portion 362B may include a first bending section 3621B and a second bending section 3622B. The first bending section 3621B is connected between the first connection portion 361B and the second bending section 3622B, and the bending direction of the first bending section 3621B may be opposite to the bending direction of the second bending section 3622B. The first bending section 3621B and the second bending section 3622B may make full use of the space between the first connection portion 361B and the third connection portion 363B, and are conducive to making the first bending section 3621B and the second bending section 3622B have a larger radius of curvature, so as to reduce the risk of stress concentration in the first bending section 3621B and the second bending section 3622B.

[0252] Exemplarily, the first bending section 3621B may be an arc-shaped structure. The first bending section 3621B may have an inner normal and an outer normal. The first bending section 3621B may be adjacent to the second end 36C. In the XY plane, the first bending section 3621B has a side close to the second end 36C and a side away from the second end 36C. The inner normal of the first bending section 3621B may be toward the side away from the second end 36C. It is understandable that the first bending section 3621B may not need to have an inner normal at each location toward the side away from the second end 36C, and the first bending section 3621B may have an inner normal in most structures that is toward the side away from the second end 36C.

[0253] Exemplarily, the second bending section 3622B may be an arc-shaped structure. The second bending section 3622B may have an inner normal and an outer normal. The second bending section 3622B may be adjacent to the first connection portion 361B. In the XY plane, the second bending section 3622B may have a side close to the first connection portion 361B and a side away from the first connection portion 361B. The inner normal of the second bending section 3622B may be toward the side away from the first connection portion 361B. It should be noted that the inner normal of the second bending section 3622B does not necessarily have to be toward the side away from the first connection portion 361B at every location, and the second bending section 3622B may have an inner normal of most of the structures facing the side away from the first connection portion 361B as a whole.

[0254] It is understandable that the centering support 36 of the above embodiment is applied to the speaker 30 to achieve conductivity and positioning of the voice coil 34 of the speaker 30. The centering support 36 of the above embodiment can also be applied to other electronic devices that need to achieve conductivity and centering effects.

[0255] It is understood that all the above drawings are exemplary illustrations of the present application and do not represent the actual size of the product. Moreover, the size ratio relationship between the components in the drawings is not intended to limit the actual product of the present application.

[0256] The above are only some implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A loudspeaker (30), characterized in that: The invention comprises a shell (31), a diaphragm (32), a magnetic circuit assembly (33), a voice coil (34) and a centering support plate (36), wherein the magnetic circuit assembly (33) is fixedly connected to the shell (31), the magnetic circuit assembly (33) has a magnetic gap (33c), the diaphragm (32) is fixedly connected to the shell (31), one end of the voice coil (34) is fixedly connected to the diaphragm (32), and the other end of the voice coil (34) is located in the magnetic gap (33c); In the extension direction of the centering support piece (36), the centering support piece (36) comprises a first end (36A), a connecting portion (36B) and a second end (36C) which are connected in sequence, the first end (36A) of the centering support piece (36) is fixedly connected to the housing (31), and the second end (36C) of the centering support piece (36) is fixedly connected to the voice coil (34); In the thickness direction of the centering support plate (36), the centering support plate (36) comprises a first insulating layer (361), a conductive layer (362) and a second insulating layer (363) stacked in sequence, and the conductive layer (362) is electrically connected to the voice coil (34); The centering support plate (36) also includes a first reinforcement layer (364b), which is fixed to the side of the second insulating layer (363b) of the connecting portion (36B) facing away from the conductive layer (362b) of the connecting portion (36B), and the rigidity of the first reinforcement layer (364b) is greater than the rigidity of the conductive layer (362).

2. The loudspeaker (30) according to claim 1, characterized in that The material of the first reinforcement layer (364b) is a metal material.

3. The loudspeaker (30) according to claim 2, characterized in that The centering support plate (36) also includes a first protective layer (365b), a portion of which is fixed to the side of the second insulating layer (363b) of the first reinforcing layer (364b) facing away from the connecting portion (36B), and a portion of which is fixedly connected to the second insulating layer (363b) of the connecting portion (36B) via the side of the first reinforcing layer (364b).

4. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: In the thickness direction of the centering support plate (36), the thickness of the first reinforcing layer (364b) is greater than or equal to the thickness of the conductive layer (362b) of the connecting portion (36B); And / or, in a direction perpendicular to the extension direction of the centering support plate (36) and perpendicular to the thickness direction of the centering support plate (36), the width of the first reinforcing layer (364b) is greater than or equal to the width of the conductive layer (362b) of the connecting portion (36B).

5. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: The centering support plate (36) further includes a second reinforcement layer (366b), which is fixed to the side of the first insulating layer (361b) of the connecting portion (36B) facing away from the conductive layer (362b) of the connecting portion (36B), and the stiffness of the second reinforcement layer (366b) is greater than the stiffness of the conductive layer (362).

6. The loudspeaker (30) according to claim 5, characterized in that The material of the second reinforcement layer (366b) is a metal material; The centering support plate (36) also includes a second protective layer (367b), a portion of which is fixed to the side of the second reinforcing layer (366b) facing away from the first insulating layer (361b) of the connecting portion (36B), and a portion of which is fixedly connected to the first insulating layer (361b) of the connecting portion (36B) via the side of the second reinforcing layer (366b).

7. The loudspeaker (30) according to claim 5, characterized in that The first reinforcement layer (364b) and the second reinforcement layer (366b) are centrally symmetrically distributed relative to the conductive layer (362).

8. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: A portion of the second insulating layer (363) is fixedly connected to the first insulating layer (361) via a side surface of the conductive layer (362).

9. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: The centering support plate (36) further comprises a third reinforcement layer (364a), the third reinforcement layer (364a) being fixed to a side of the second insulating layer (363a) of the first end (36A) facing away from the conductive layer (362a) of the first end (36A), and being arranged in the same layer as the first reinforcement layer (364b), the rigidity of the third reinforcement layer (364a) being greater than the rigidity of the conductive layer (362); And / or, the centering support plate (36) further includes a fourth reinforcement layer (364c), the fourth reinforcement layer (364c) is fixed to the second end (36C) on the side of the second insulating layer (363c) facing away from the conductive layer (362c) of the second end (36C), and is arranged in the same layer as the first reinforcement layer (364b), and the rigidity of the fourth reinforcement layer (364c) is greater than the rigidity of the conductive layer (362).

10. The loudspeaker (30) according to claim 9, characterized in that The centering support plate (36) further comprises a first welding pad (368) and a second welding pad (369), wherein the first welding pad (368) is embedded in the first insulating layer (361a) of the first end (36A) of the centering support plate (36), and the first welding pad (368) is electrically connected to the conductive layer (362a) of the first end (36A); the second welding pad (369) is embedded in the second insulating layer (363c) of the second end (36C), and is electrically connected to the conductive layer (362c) of the second end (36C), and is spaced apart from the fourth reinforcing layer (364c); Alternatively, the first pad (368) is embedded in the second insulating layer (363a) of the first end (36A), the first pad (368) is electrically connected to the conductive layer (362a) of the first end (36A), and is spaced apart from the third reinforcing layer (364a); the second pad (369) is embedded in the second insulating layer (363c) of the second end (36C), the second pad (369) is electrically connected to the conductive layer (362c) of the second end (36C), and is spaced apart from the fourth reinforcing layer (364c); Alternatively, the first solder pad (368) is embedded in the first insulating layer (361a) of the first end (36A) and is electrically connected to the conductive layer (362a) of the first end (36A), and the second solder pad (369) is embedded in the first insulating layer (361c) of the second end (36C) and is electrically connected to the conductive layer (362c) of the second end (36C).

11. The loudspeaker (30) according to claim 10, characterized in that In the thickness direction of the centering support plate (36), the centering support plate (36) further comprises a fifth reinforcement layer (366a), the fifth reinforcement layer (366a) is fixed to the first end (36A) of the first insulating layer (361a) on the side of the conductive layer (362a) facing away from the first end (36A), and the rigidity of the fifth reinforcement layer (366a) is greater than the rigidity of the conductive layer (362); the first welding pad (368) and the fifth reinforcement layer (366a) are arranged at intervals; And / or, in the thickness direction of the centering support plate (36), the centering support plate (36) further includes a sixth reinforcement layer (366c), the sixth reinforcement layer (366c) is fixed to the first insulating layer (361c) of the second end (36C) on the side of the conductive layer (362c) facing away from the second end (36C), and the rigidity of the sixth reinforcement layer (366c) is greater than the rigidity of the conductive layer (362); the second welding pad (369) is spaced apart from the sixth reinforcement layer (366c).

12. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: The connecting portion (36B) includes a first connecting portion (361B), a second connecting portion (362B) and a third connecting portion (363B) which are connected in sequence, wherein the first connecting portion (361B) is fixedly connected to the first end (36A), the third connecting portion (363B) is fixedly connected to the second end (36C), and the second connecting portion (362B) is S-shaped and is at least partially located between the second end (36C) and the third connecting portion (363B).

13. The loudspeaker (30) according to claim 12, characterized in that In the extending direction from the first connecting portion (361B) to the third connecting portion (363B), the width of the first reinforcing layer (364b) increases, decreases, increases, and decreases.

14. The loudspeaker (30) according to claim 12, characterized in that The second connecting portion (362B) includes a first bending segment (3621B) and a second bending segment (3622B); the first bending segment (3621B) is connected between the first connecting portion (361B) and the second bending segment (3622B), the inner normal of the first bending segment (3621B) is toward the side away from the third connecting portion (363B), and the inner normal of the second bending segment (3622B) is toward the side close to the third connecting portion (363B).

15. The loudspeaker (30) according to claim 12, characterized in that In the extending direction from the first connecting portion (361B) to the third connecting portion (363B), the width-to-thickness ratio of the second connecting portion (362B) increases, decreases, increases, and decreases.

16. The loudspeaker (30) according to claim 12, characterized in that The radius of curvature of the second connecting portion (362B) is negatively correlated with the width-to-thickness ratio.

17. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: The width-to-thickness ratio of the connecting portion (36B) is in the range of 3 to 8.

18. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that: The diaphragm (32) and the magnetic circuit component (33) are arranged opposite to each other.

19. An electronic device (100), characterized in that: The invention comprises a housing (10) and a loudspeaker (30) according to any one of claims 1 to 18, wherein the loudspeaker (30) is mounted on the housing (10).

20. A centering support (36), applied to a loudspeaker (30), characterized in that: In the extension direction of the centering support piece (36), the centering support piece (36) comprises a first end (36A), a connecting portion (36B) and a second end (36C) which are connected in sequence; In the thickness direction of the centering support plate (36), the centering support plate (36) comprises a first insulating layer (361), a conductive layer (362), and a second insulating layer (363) stacked in sequence, and the conductive layer (362) is used for being electrically connected to the voice coil of the speaker (30); The centering support plate (36) also includes a first reinforcement layer (364b), which is fixed to the side of the second insulating layer (363b) of the connecting portion (36B) facing away from the conductive layer (362b) of the connecting portion (36B), and the rigidity of the first reinforcement layer (364b) is greater than the rigidity of the conductive layer (362).

21. The centering spider (36) according to claim 20, characterized in that The material of the first reinforcement layer (364b) is a metal material; The centering support plate (36) also includes a first protective layer (365b), a portion of which is fixed to the side of the second insulating layer (363b) of the first reinforcing layer (364b) facing away from the connecting portion (36B), and a portion of which is fixedly connected to the second insulating layer (363b) of the connecting portion (36B) via the side of the first reinforcing layer (364b).

22. The centering spider (36) according to claim 20 or 21, characterized in that In the thickness direction of the centering support plate (36), the thickness of the first reinforcing layer (364b) is greater than or equal to the thickness of the conductive layer (362b) of the connecting portion (36B); And / or, in a direction perpendicular to the extension direction of the centering support plate (36) and perpendicular to the thickness direction of the centering support plate (36), the width of the first reinforcing layer (364b) is greater than or equal to the width of the conductive layer (362b) of the connecting portion (36B).

23. The centering spider (36) according to claim 20 or 21, characterized in that The centering support plate (36) further includes a second reinforcement layer (366b), which is fixed to the side of the first insulating layer (361b) of the connecting portion (36B) facing away from the conductive layer (362b) of the connecting portion (36B), and the stiffness of the second reinforcement layer (366b) is greater than the stiffness of the conductive layer (362).

24. The centering spider (36) according to claim 23, characterized in that The material of the second reinforcement layer (366b) is a metal material; The centering support plate (36) also includes a second protective layer (367b), a portion of which is fixed to the side of the second reinforcing layer (366b) facing away from the first insulating layer (361b) of the connecting portion (36B), and a portion of which is fixedly connected to the first insulating layer (361b) of the connecting portion (36B) via the side of the second reinforcing layer (366b).

25. The centering spider (36) according to claim 20 or 21, characterized in that: The centering support plate (36) further comprises a third reinforcement layer (364a), the third reinforcement layer (364a) being fixed to a side of the second insulating layer (363a) of the first end (36A) facing away from the conductive layer (362a) of the first end (36A), and being arranged in the same layer as the first reinforcement layer (364b), the rigidity of the third reinforcement layer (364a) being greater than the rigidity of the conductive layer (362); And / or, the centering support plate (36) further includes a fourth reinforcement layer (364c), the fourth reinforcement layer (364c) is fixed to the second end (36C) on the side of the second insulating layer (363c) facing away from the conductive layer (362c) of the second end (36C), and is arranged in the same layer as the first reinforcement layer (364b), and the rigidity of the fourth reinforcement layer (364c) is greater than the rigidity of the conductive layer (362).

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