Centering disk, sound production device and electronic equipment

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and provides a centering disk, a sounding device and electronic equipment, the centering disk comprises an inner fixing part, an outer fixing part and a connecting part, and the connecting part is respectively connected with the inner fixing part and the outer fixing part; the centering disk comprises a base material layer and a copper foil layer which are arranged in a stacked mode, the copper foil layer of the inner fixing part and the copper foil layer of the connecting part comprise at least one rolled copper foil layer, and the copper foil layer of the outer fixing part comprises an electrolytic copper foil layer. The sounding device comprises a shell and a vibration system, the vibration system comprises a vibrating diaphragm assembly, a centering disk and a voice coil, an outer fixing part of the centering disk is connected with the shell, an inner fixing part of the centering disk is connected with the voice coil, a copper foil layer located on the outer fixing part is electrically connected with an external circuit, and a copper foil layer located on the inner fixing part is electrically connected with a voice coil lead. The centering disk is the above centering disk. According to the centering disk disclosed by the utility model, the product amplitude can be improved, the good vibration reliability is ensured, and the cost is greatly reduced while the performance and the reliability are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic conversion, in particular to a centering support piece, a sound-generating device and an electronic device. Background Art

[0002] As people's requirements for consumer electronic products increase, the performance of speakers is also attracting more and more attention. While improving the performance of speakers, it also brings about problems such as product design limits, increasing amplitude, and increasing product polarization, which poses severe challenges to the reliability of speaker products and the entire machine.

[0003] In order to improve the vibration state of the product, most speaker products currently use a centering support structure. The centering support can not only play a role in conducting electricity, but also play a role in suppressing polarization. The speaker products using the centering support structure have greatly improved their Xmax amplitude, thereby increasing the product's Vdmax, and then improving the sensitivity of the speaker, giving consumers a better experience.

[0004] In order to ensure the reliability margin after the Xmax amplitude is increased, the copper foil inside the speaker centering support is mostly made of rolled copper (RA) or high-ductility rolled copper (HA); rolled copper is not easy to crack and has good bending performance, but at the same time the cost is also high, making the speaker product more expensive.

[0005] At present, speakers with an amplitude of more than 0.3mm mainly use a support structure. Such speakers are mainly used in mid-to-high-end mobile phones. The high cost of the centering support will affect the application of large-amplitude speakers in low-end products, thereby hindering more end users from experiencing better sound quality. Therefore, it is imperative to reduce the cost of the centering support. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0007] Specifically, the technical problem to be solved by the utility model is to provide a centering support plate, a sound-generating device and an electronic device to solve the technical problem of the current centering support plate structure having a high cost.

[0008] In order to solve the above technical problems, the technical solution of the utility model is:

[0009] A centering support plate, the centering support plate comprising an inner fixing portion, an outer fixing portion and a connecting portion, wherein the connecting portion connects the inner fixing portion and the outer fixing portion respectively;

[0010] The centering support plate includes a substrate layer and a copper foil layer which are stacked, wherein the copper foil layers of the inner fixing portion and the connecting portion include at least one rolled copper foil layer, and the copper foil layer of the outer fixing portion includes an electrolytic copper foil layer.

[0011] According to some embodiments of the present invention, the copper foil layer of the inner fixing part and the connecting part includes a rolled copper foil layer, and the base material layer is provided on opposite sides of the rolled copper foil layer, and the copper foil layer of the outer fixing part includes an electrolytic copper foil layer and a rolled copper foil layer, and the base material layer is provided between the electrolytic copper foil layer and the rolled copper foil layer;

[0012] Alternatively, the copper foil layers of the inner fixing portion, the connecting portion and the outer fixing portion each include an electrolytic copper foil layer and a rolled copper foil layer, and the substrate layer is provided between the electrolytic copper foil layer and the rolled copper foil layer.

[0013] According to some embodiments of the present invention, the centering support piece is two support piece structures that are opposite and spaced apart, or the centering support piece includes four support piece structures distributed in an array, each of which includes the outer fixing portion, the connecting portion and the inner fixing portion;

[0014] Alternatively, the centering support plate includes an annular outer fixing portion, the inner fixing portion is located on the circumferential inner side of the outer fixing portion, the connecting portion is provided between the outer fixing portion and the inner fixing portion, and the connecting portion is multiple and respectively connects the outer fixing portion and the inner fixing portion.

[0015] According to some embodiments of the utility model, the centering support sheet is two support sheet structures that are opposite and spaced apart, wherein the copper foil layer of the inner fixing portion and the connecting portion of one of the support sheet structures includes a layer of rolled copper foil layer, and the copper foil layer of the outer fixing portion includes a layer of electrolytic copper foil layer; wherein the outer fixing portion, the inner fixing portion and the connecting portion of another of the support sheet structures are only composed of the substrate layer, and the substrate layer is at least two layers.

[0016] According to some embodiments of the present invention, the centering support sheet is two support sheet structures that are opposite and spaced apart, and the two support sheet structures include a first support sheet structure that is electrically connected to the voice coil lead and a second support sheet structure that is not electrically connected to the voice coil lead, wherein:

[0017] The copper foil layers of the outer fixing portion, the inner fixing portion and the connecting portion of the first support structure include at least one rolled copper foil layer;

[0018] The outer fixing part of the second support sheet structure includes a layer of rolled copper foil and a layer of electrolytic copper foil, and the inner fixing part and the connecting part include a layer of rolled copper foil or include a layer of rolled copper foil and a layer of electrolytic copper foil; or, the copper foil layers of the outer fixing part, the inner fixing part and the connecting part of the second support sheet structure include two layers of electrolytic copper foil.

[0019] According to some embodiments of the utility model, the base material layer of the external fixing part and the connecting part includes two skin layers located on the outer surface of the centering support and an intermediate layer located between the two skin layers, the intermediate layer and the copper foil layer are stacked, and the skin layer is connected to the intermediate layer or the copper foil layer;

[0020] Alternatively, the base material layer of the connecting part and the internal fixing part includes a skin layer arranged on the outer surface of one side thereof and an intermediate layer arranged with a gap between the skin layer, the copper foil layer and the intermediate layer are stacked, the skin layer is connected to the copper foil layer, and a pad part is provided on the other side surface of the internal fixing part, the pad part is electrically connected to the copper foil layer, and the voice coil lead is electrically connected to the pad part.

[0021] According to some embodiments of the present invention, at least one of the skin layer and the middle layer is a PI material layer.

[0022] The utility model also discloses a sound-generating device, including a shell and a vibration system, wherein the vibration system includes a diaphragm assembly, a centering support and a voice coil, wherein an outer fixing portion of the centering support is connected to the shell, an inner fixing portion of the centering support is connected to the voice coil, the copper foil layer on the outer fixing portion is electrically connected to an external circuit, and the copper foil layer on the inner fixing portion is electrically connected to a lead of the voice coil, and the centering support is the centering support described in the above-mentioned embodiment of the utility model.

[0023] According to some embodiments of the present utility model, one end of the voice coil is connected to the diaphragm assembly, and one end of the voice coil away from the diaphragm assembly is connected to the centering support plate;

[0024] Alternatively, the centering support plate is located between the voice coil and the diaphragm assembly.

[0025] The utility model also discloses an electronic device, comprising the sound generating device of the above embodiment of the utility model.

[0026] After adopting the above technical solution, the beneficial effects of the utility model are:

[0027] The centering support structure is configured such that the copper foil layers of the inner fixing part and the connecting part include at least one rolled copper foil layer, and the copper foil layer of the outer fixing part includes an electrolytic copper foil layer. Thus, the copper foil layer in the area affecting the vibration reliability adopts a rolled copper foil layer, which realizes electrical connection with the voice coil and has a good supporting effect, can increase the product amplitude and ensure good vibration reliability. The copper foil layers in other areas less related to the vibration reliability adopt a design including an electrolytic copper foil layer, which ensures performance and reliability while greatly reducing the cost of the centering support, thereby increasing the application rate of the centering support in the generating device product, thereby enabling more end users to experience better sound quality effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is a schematic structural diagram of a centering support piece according to the first embodiment of the utility model;

[0030] Figure 2 This is a structural schematic diagram of a centering support piece according to a second embodiment of the utility model;

[0031] Figure 3 This is a structural schematic diagram of a centering support piece according to a third embodiment of the present utility model;

[0032] Figure 4 This is a schematic structural diagram of a centering support piece according to a fourth embodiment of the present utility model;

[0033] Figure 5 This is a structural schematic diagram of a centering support piece according to a fifth embodiment of the present utility model;

[0034] Figure 6 This is a schematic structural diagram of a centering support piece according to a sixth embodiment of the present utility model;

[0035] Figure 7 This is a structural schematic diagram of a centering support piece according to a seventh embodiment of the present utility model;

[0036] Figure 8 This is a structural schematic diagram of a centering support piece according to an eighth embodiment of the present utility model;

[0037] Fig. 9 This is a schematic diagram of the assembly structure of a sound-generating device according to an embodiment of the utility model;

[0038] Fig.10 This is a schematic diagram of the explosion structure of a sound-generating device according to one embodiment of the utility model;

[0039] Fig.11 This is a schematic diagram of the assembly structure of a sound-generating device according to another embodiment of the utility model;

[0040] Reference numerals:

[0041] 1-centering support; 1a-support structure; 101-inner fixing part; 102-outer fixing part; 103-connecting part; 104-copper foil layer; 104a-rolled copper foil layer; 104b-electrolytic copper foil layer; 105-base material layer; 1051-skin layer; 1052-middle layer;

[0042] 2-housing; 3-diaphragm; 4-vibration plate; 5-voice coil; 6-magnetic yoke; 7-center magnet; 8-side magnet; 9-center magnetic plate; 10-front cover; 11-dustproof net; 12-side magnetic plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0046] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0047] like Figures 1 to 11 As shown together, the centering support 1 according to the embodiment of the utility model includes an inner fixing part 101, an outer fixing part 102 and a connecting part 103, and the connecting part 103 connects the inner fixing part 101 and the outer fixing part 102 respectively. When the centering support 1 is provided in a sound-generating device, the inner fixing part 101 can be used to connect with the voice coil 5 of the sound-generating device, and the outer fixing part 102 can be used to connect with the housing 2 of the sound-generating device. The centering support 1 includes a stacked substrate layer 105 and a copper foil layer 104, wherein the copper foil layer 104 of the inner fixing part 101 and the connecting part 103 includes at least one rolled copper foil layer 104a, and the copper foil layer 104 of the outer fixing part 102 includes an electrolytic copper foil layer 104b. The copper foil layer 104 can form a conductive circuit on the centering support 1, or can form multiple independent conductive circuits, which is not limited by the utility model, and the user can flexibly select according to the actual use situation.

[0048] According to the centering support plate 1 of the utility model, the inner fixing portion 101 and the connecting portion 103 are areas that affect the vibration reliability. The copper foil layer 104 in the area that affects the vibration reliability adopts at least one layer of rolled copper foil layer 104a, which can achieve electrical connection with the voice coil 5 while having a good supporting effect, can increase the amplitude of the loudspeaker product and ensure good vibration reliability. The outer fixing portion 102 is an area that is not closely related to the vibration reliability. The copper foil layer 104 of the outer fixing portion 102 adopts a design that includes an electrolytic copper foil layer 104b. While ensuring performance and reliability, since the production cost of the electrolytic copper foil layer 104b is lower than that of the rolled copper foil layer 104a, the production cost of the centering support plate 1 is greatly reduced.

[0049] In some embodiments of the present invention, Figure 1 and Figure 2 , Figures 5 to 8 As shown, the copper foil layer 104 of the inner fixing part 101 and the connecting part 103 includes a rolled copper foil layer 104a, and the two opposite sides of the rolled copper foil layer 104a are provided with a base material layer 105. The copper foil layer 104 of the outer fixing part 102 includes an electrolytic copper foil layer 104b and a rolled copper foil layer 104a, and the base material layer 105 is provided between the electrolytic copper foil layer 104b and the rolled copper foil layer 104a. In other words, the outer fixing part 102 adds a layer of electrolytic copper foil layer 104b on the basis of the connecting part 103 and the inner fixing part 101, which not only meets the strength requirement of the outer fixing part 102, but also saves costs.

[0050] In other embodiments of the present invention, the copper foil layers 104 of the inner fixing portion 101, the connecting portion 103 and the outer fixing portion 102 each include an electrolytic copper foil layer 104b and a rolled copper foil layer 104a, and a substrate layer 105 is disposed between the electrolytic copper foil layer 104b and the rolled copper foil layer 104a. Thus, the copper foil layers 104 and the substrate layers 105 of each part of the centering support 1 are disposed in the same manner, thereby facilitating processing.

[0051] In some embodiments of the present invention, Figures 1 to 6 , Fig. 9 and Fig.10 As shown, the centering support 1 is two support structures 1a that are opposite and spaced apart, and each support structure includes an outer fixing portion 102, a connecting portion 103, and an inner fixing portion 101. Thus, the centering support 1 can be connected to the bottom or side wall of the voice coil 5 of the sound-generating device, and the two centering support 1 are located on opposite sides of the voice coil 5 to meet specific usage requirements. For example, each support structure can include an outer fixing portion 102, two connecting portions 103 connected to the outer fixing portion 102, and two inner fixing portions respectively connected to the connecting portions 103. The inner fixing portion 101 of the centering support 1 is used to connect to the voice coil 5, and the outer fixing portion 102 of the centering support 1 is used to connect to the housing 2. The copper foil layer 104 can form two independent conductive circuits on one support structure 1a, and the voice coil 5 lead wire is connected to the external circuit through the conductive circuit.

[0052] In other embodiments of the present invention, the centering support 1 includes four support structures 1a distributed in an array, and each support structure 1a includes an outer fixing portion 102, a connecting portion 103, and an inner fixing portion 101. Thus, the centering support 1 can be connected to the bottom or side wall of the voice coil 5 of the sound-generating device, and the four centering supports 1 are respectively located at the four corners of the voice coil 5, so as to enhance the centering effect of the centering support 1 on the voice coil 5 and effectively reduce the polarization phenomenon of the voice coil 5 during operation. It can be understood that the inner fixing portion 101 of the centering support 1 is used to connect to the voice coil 5, and the outer fixing portion 102 of the centering support 1 is used to connect to the housing 2. The copper foil layer 104 of a single support structure 1a forms a conductive circuit, and the connection between the lead wire of the voice coil 5 and the external circuit is realized through the conductive circuit.

[0053] In other embodiments of the present invention, Figure 7 , Figure 8 , Fig.11As shown, the centering support 1 includes an annular outer fixing portion 102, the inner fixing portion 101 is located on the inner side of the outer fixing portion 102 in the circumferential direction, and a connecting portion 103 is provided between the outer fixing portion 102 and the inner fixing portion 101, and the connecting portions 103 are multiple and respectively connect the outer fixing portion 102 and the inner fixing portion 101. Therefore, the centering support 1 can be connected to the top of the voice coil 5 and the diaphragm assembly of the sound-generating device respectively, and the centering support 1 is located between the voice coil 5 and the diaphragm assembly, which can play a role in balancing the vibration system. It can be understood that the outer fixing portion 102 can be formed into a square structure, and the centering support 1 can have four connecting portions 103, and the four connecting portions 103 are arranged opposite to each other and are respectively close to the long side and the short side of the outer fixing portion 102; the centering support 1 can also have two connecting portions 103, and the two connecting portions 103 are arranged opposite to each other, and the two connecting portions 103 can be located close to the long side of the outer fixing portion 102, or can be located close to the short side of the outer fixing portion 102.

[0054] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the centering support sheet 1 is composed of two support sheet structures 1a that are opposite and spaced apart, wherein the copper foil layer 104 of the inner fixing portion 101 and the connecting portion 103 of one support sheet structure 1a includes a rolled copper foil layer 104a, and the copper foil layer 104 of the outer fixing portion 102 includes an electrolytic copper foil layer 104b; wherein the outer fixing portion 102, the inner fixing portion 101 and the connecting portion 103 of the other support sheet structure 1a are only composed of a substrate layer 105, and the substrate layer 105 is at least two layers.

[0055] Specifically, the copper foil layer 104 of the inner fixing part 101 and the connecting part 103 of one support structure 1a may include a rolled copper foil layer 104a, and the copper foil layer 104 of the outer fixing part 102 may include a rolled copper foil layer 104a and a electrolytic copper foil layer 104b; the outer fixing part 102, the inner fixing part 101 and the connecting part 103 of another support structure 1a are only composed of the base material layer 105. The rolled copper foil layer 104a of the inner fixing part 101, the connecting part 103 and the outer fixing part 102 form a conductive circuit to achieve the connection between the voice coil 5 and the external circuit. The outer fixing part 102 adds a layer of electrolytic copper foil 104b on the basis of the connecting part 103 and the inner fixing part 101, which not only meets the strength requirement of the outer fixing part 102, but also saves costs.

[0056] It can be understood that the inner fixing part 101 and the connecting part 103 provided with the rolled copper foil layer 104a are used to be electrically connected to the lead of the voice coil 5, and the inner fixing part 101 and the connecting part 103 composed only of the substrate layer 105 are not electrically connected to the lead of the voice coil, and only play a role in supporting the vibration of the voice coil 5. During operation, the inner fixing part 101 and the connecting part 103 electrically connected to the lead of the voice coil 5 have good vibration reliability while achieving conductive connectivity due to the use of the rolled copper foil layer 104a. No current passes through the inner fixing part 101 and the connecting part 103 which are not electrically connected to the lead of the voice coil 5, so there is no need to set the copper foil layer 104. In order to meet the requirements for structural strength, multiple layers (at least two layers) of substrate layers 105 can be set. The substrate layers 105 are stacked, thereby saving the production cost of the centering support plate 1.

[0057] In some embodiments of the present invention, Figures 1 to 4 , Fig. 9 , Fig.10 As shown, the centering support 1 is composed of two support structures 1a that are opposite and spaced apart. The two support structures 1a include a first support structure electrically connected to the lead wire of the voice coil 5 and a second support structure that is not electrically connected to the lead wire of the voice coil 5. The copper foil layer 104 of the outer fixing portion 102, the inner fixing portion 101 and the connecting portion 103 of the first support structure includes at least one layer of rolled copper foil layer 104a, and the rolled copper foil layer 104a may be one layer or two or more layers. The outer fixing portion 102 of the second support structure includes a layer of rolled copper foil layer 104a and a layer of electrolytic copper foil layer 104b, and the inner fixing portion 101 and the connecting portion 103 include a layer of rolled copper foil layer 104a or include a layer of rolled copper foil layer 104a and a layer of electrolytic copper foil layer 104b. Alternatively, the copper foil layer 104 of the outer fixing portion 102, the inner fixing portion 101 and the connecting portion 103 of the second support structure includes two layers of electrolytic copper foil layers 104b.

[0058] It can be understood that, since the first support structure is electrically connected to the lead of the voice coil 5, the rolled copper foil layer 104a of the first support structure has good vibration reliability while achieving conductive connection. Since the second support structure is not electrically connected to the lead of the voice coil 5, it only plays a role in supporting the vibration of the voice coil 5. Therefore, the inner fixing portion 101 and the connecting portion 103 of the second support structure, whether including a layer of rolled copper foil layer 104a, a layer of rolled copper foil layer 104a and a layer of electrolytic copper foil layer 104b, or two layers of electrolytic copper foil layers 104b, enable the second support structure to play a good vibration supporting effect on the voice coil 5 and meet the actual use requirements. In addition, the outer fixing portion 102 of the second support structure includes the electrolytic copper foil layer 104b, which can save costs while meeting the strength requirements of the outer fixing portion 102.

[0059] like Figure 1 and Figure 2As shown, in a specific embodiment of the utility model, the copper foil layer 104 of the outer fixing part 102, the inner fixing part 101 and the connecting part 103 of the first support structure includes a rolled copper foil layer 104a, and the outer fixing part 102 of the first support structure also includes a layer of electrolytic copper foil layer 104b; the outer fixing part 102 of the second support structure includes a layer of rolled copper foil layer 104a and a layer of electrolytic copper foil layer 104b, and the inner fixing part 101 and the connecting part 103 include a layer of rolled copper foil layer 104a. Thus, the first support structure realizes conductive connection with the voice coil 5, the rolled copper foil layer 104a of the inner fixing part 101 and the connecting part 103 of the first support structure and the second support structure enables good vibration support effect on the voice coil 5, and the electrolytic copper foil layer 104b added to the outer fixing part 102 of the first support structure and the second support structure meets the strength requirement of the outer fixing part 102 and saves cost. Of course, the inner fixing portion 101 and the connecting portion 103 of the second support structure may also include a rolled copper foil layer 104a and an electrolytic copper foil layer 104b, thereby ensuring low cost and improving the vibration support effect of the second support structure on the voice coil 5.

[0060] like Figure 3 and Figure 4 As shown, in another specific embodiment of the utility model, the copper foil layer 104 of the outer fixing part 102, the inner fixing part 101 and the connecting part 103 of the first support structure includes two layers of rolled copper foil layer 104a; the outer fixing part 102, the inner fixing part 101 and the connecting part 103 of the second support structure include one layer of rolled copper foil layer 104a and one layer of electrolytic copper foil layer 104b. The rolled copper foil layer 104a of the first support structure realizes conductive connection with the voice coil 5, and the two layers of rolled copper foil layer 104a make the inner fixing part 101 and the connecting part 103 of the first support structure have better vibration support effect on the voice coil 5. Since the second support structure is not electrically connected to the lead wire of the voice coil 5, the second support structure replaces one layer of rolled copper foil layer 104a with one layer of electrolytic copper foil layer 104b, which reduces the cost. Of course, the inner fixing part 101 and the connecting part 103 of the second support structure may include only one layer of rolled copper foil layer 104a, which can improve the vibration support effect and further reduce the cost; or the copper foil layer 104 of the outer fixing part 102, the inner fixing part 101 and the connecting part 103 of the second support structure may include two layers of electrolytic copper foil layers 104b, which can meet the vibration support requirements for the voice coil 5 and have lower cost.

[0061] Optionally, the rolled copper foil layer 104 a in the above embodiment of the present invention may be a rolled copper material RA or a high-ductility rolled copper material HA.

[0062] In some embodiments of the present invention, Figure 1 , Figure 3 , Figure 5 and Figure 7As shown, the substrate layer 105 of the external fixing portion 102 and the connecting portion 103 includes two epidermal layers 1051 located on the outer surface of the centering support 1 and an intermediate layer 1052 located between the two epidermal layers 1051, the intermediate layer 1052 and the copper foil layer 104 are stacked, the intermediate layer 1052 can separate two or more layers of the copper foil 104, and the epidermal layer 1051 is connected to the intermediate layer 1052 or the copper foil layer 104. The outer surfaces of the external fixing portion 102 and the connecting portion 103 of the centering support 1 are both provided with epidermal layers 1051 to achieve insulation protection for the centering support 1, and when the centering support 1 is installed, it can prevent the conductive circuit of the centering support 1 from being short-circuited with other components of the sound-generating device.

[0063] In other embodiments of the present invention, Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, the base material layer 105 of the connection part 103 and the internal fixing part 101 includes a skin layer 1051 arranged on the outer surface of one side thereof and an intermediate layer 1052 spaced apart from the skin layer 1051, the copper foil layer 104 and the intermediate layer 1052 are stacked, the skin layer 1051 is connected to the copper foil layer 104, and a pad portion is provided on the other side surface of the internal fixing part 101, the pad portion is electrically connected to the copper foil layer 104, and the lead wire of the voice coil 5 is electrically connected to the pad portion, thereby realizing the conductive connection between the centering support plate 1 and the voice coil 5. In other words, the connection part 103 and the internal fixing part 101 can be windowed, and one of the skin layers 1051 of the base material layer 105 of the connection part 103 and the internal fixing part 101 can be removed, thereby not only meeting the use requirements and saving costs, but also facilitating the arrangement of the pad portion on the internal fixing part 101.

[0064] In some embodiments of the present invention, at least one of the skin layer 1051 and the middle layer 1052 is a PI material layer. Optionally, the skin layer 1051 and the middle layer 1052 can both be PI material layers, and the adjacent PI material layers or the PI material layer and the copper foil layer 104 are connected by gluing.

[0065] The utility model also discloses a sound-generating device, such as Figures 1 to 11As shown, it includes a housing 2 and a vibration system, and the vibration system includes a diaphragm assembly, a centering support 1 and a voice coil 5. The outer fixing portion 102 of the centering support 1 is connected to the housing 2, and the inner fixing portion 101 of the centering support 1 is connected to the voice coil 5. The copper foil layer 104 located on the outer fixing portion 102 is electrically connected to the external circuit, and the copper foil layer 104 located on the inner fixing portion 101 is electrically connected to the lead of the voice coil 5. The centering support 1 is the centering support 1 described in the above embodiment of the utility model. The sound-generating device of the utility model realizes the conduction between the voice coil 5 and the external circuit through the centering support 1, and the centering support 1 can also balance the vibration of the vibration system, which can effectively solve the polarization problem of the vibration system and improve the sound effect of the sound-generating device.

[0066] In some embodiments of the utility model, the sound-generating device also includes a magnetic circuit system, the magnetic circuit system includes a magnetic yoke 6 and a magnetic circuit assembly, the magnetic circuit assembly includes a central magnet 7, a side magnet 8, a central magnetic plate 9 and a side magnetic plate 12, the central magnet 7 and the side magnet 8 are both arranged on the magnetic yoke 6, the central magnetic plate 9 is located on the side of the central magnet 7 away from the magnetic yoke 6 and is connected to the central magnet 7, the central magnet 7 is clamped between the magnetic yoke 6 and the central magnetic plate 9, the side magnetic plate 12 is integrally injection-molded with the housing 2 and is located on the side of the side magnet 8 away from the magnetic yoke 6, the side magnet 8 is clamped between the magnetic yoke 6 and the side magnetic plate 12, the central magnet 7 and the side magnet 8 are spaced apart to define a magnetic gap, and the other end of the voice coil 5 is inserted into the magnetic gap.

[0067] In one embodiment of the present invention, Figures 1 to 6 , Fig. 9 and Fig.10 As shown, one end of the voice coil 5 is connected to the diaphragm assembly, and the end of the voice coil 5 away from the diaphragm assembly is connected to the centering support plate 1, and the centering support plate 1 can be connected to the bottom or side wall of the voice coil 5. The centering support plate 1 can be the two opposing and spaced support plate structures 1a in the above-mentioned embodiment of the utility model, or can be the four array-distributed support plate structures 1a in the above-mentioned embodiment of the utility model.

[0068] In one embodiment of the present invention, Fig. 9 and Fig.10 As shown, the diaphragm assembly includes a diaphragm 3 and a vibration plate 4 arranged on the diaphragm 3 , the diaphragm 3 is connected to the housing 2 , one end of the voice coil 5 is connected to the diaphragm 3 , and the vibration plate 4 is connected to the diaphragm 3 .

[0069] In one embodiment of the present invention, Fig. 9 and Fig.10As shown, the sound-generating device further includes a front cover 10 and a dust-proof net 11. One side of the front cover 10 is connected to the housing 2. The front cover 10 and the housing 2 form a frame to protect the magnetic circuit system and the vibration system. The dust-proof net 11 is connected to the other side of the front cover 10. Of course, in some cases, the sound-generating device may not include the front cover 10 and the dust-proof net 11.

[0070] In another embodiment of the present invention, Figure 7 , Figure 8 and Fig.11 As shown, the centering support plate 1 is located between the voice coil 5 and the diaphragm assembly, the diaphragm assembly includes a diaphragm 3 and a vibration plate 4 arranged on the diaphragm 3, the voice coil 5 is located on the side of the centering support plate 1 facing the magnetic circuit assembly, that is, the centering support plate 1 is connected to the top of the voice coil 5, the diaphragm assembly is connected to the centering support plate 1, and the diaphragm assembly is located on the side of the centering support plate away from the magnetic circuit assembly.

[0071] The specific structure of the centering support plate 1 of the sound-emitting device refers to the aforementioned embodiment. Since the sound-emitting device adopts all the technical features of the aforementioned centering support plate 1, the application rate of the centering support plate 1 in the speaker product is improved, and the cost of the sound-emitting device is greatly reduced, thereby enabling more end users to experience better sound quality effects.

[0072] The utility model also discloses an electronic device, comprising the sound generating device described in the above embodiment of the utility model.

[0073] It is understandable that the electronic device may be a mobile phone, a speaker, a computer, a headset, a watch, a television or a tablet computer, etc., which will not be elaborated here.

[0074] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A centering support, characterized in that: The centering support piece includes an inner fixing portion, an outer fixing portion and a connecting portion, and the connecting portion connects the inner fixing portion and the outer fixing portion respectively; The centering support plate includes a substrate layer and a copper foil layer which are stacked, wherein the copper foil layers of the inner fixing portion and the connecting portion include at least one rolled copper foil layer, and the copper foil layer of the outer fixing portion includes an electrolytic copper foil layer.

2. The centering support according to claim 1, characterized in that: The copper foil layers of the inner fixing part and the connecting part include a rolled copper foil layer, and the base material layer is disposed on opposite sides of the rolled copper foil layer; the copper foil layer of the outer fixing part includes an electrolytic copper foil layer and a rolled copper foil layer, and the base material layer is disposed between the electrolytic copper foil layer and the rolled copper foil layer; Alternatively, the copper foil layers of the inner fixing portion, the connecting portion and the outer fixing portion each include an electrolytic copper foil layer and a rolled copper foil layer, and the substrate layer is provided between the electrolytic copper foil layer and the rolled copper foil layer.

3. The centering support according to any one of claims 1 to 2, characterized in that: The centering support piece is two support piece structures that are opposite and spaced apart, or the centering support piece includes four support piece structures distributed in an array, each of which includes the outer fixing portion, the connecting portion and the inner fixing portion; Alternatively, the centering support plate includes an annular outer fixing portion, the inner fixing portion is located on the circumferential inner side of the outer fixing portion, the connecting portion is provided between the outer fixing portion and the inner fixing portion, and the connecting portion is multiple and respectively connects the outer fixing portion and the inner fixing portion.

4. The centering support according to claim 1, characterized in that: The centering support sheet is two support sheet structures that are opposite and spaced apart, wherein the copper foil layers of the inner fixing portion and the connecting portion of one of the support sheet structures include a layer of rolled copper foil, and the copper foil layer of the outer fixing portion includes a layer of electrolytic copper foil; wherein the outer fixing portion, the inner fixing portion and the connecting portion of the other support sheet structure are only composed of the substrate layer, and the substrate layer is at least two layers.

5. The centering arm according to claim 1, characterized in that: The centering support plates are two support plate structures that are opposite and spaced apart from each other, and the two support plate structures include a first support plate structure that is electrically connected to the voice coil lead and a second support plate structure that is not electrically connected to the voice coil lead, wherein: The copper foil layers of the outer fixing portion, the inner fixing portion and the connecting portion of the first support structure include at least one rolled copper foil layer; The outer fixing part of the second support sheet structure includes a layer of rolled copper foil and a layer of electrolytic copper foil, and the inner fixing part and the connecting part include a layer of rolled copper foil or include a layer of rolled copper foil and a layer of electrolytic copper foil; or, the copper foil layers of the outer fixing part, the inner fixing part and the connecting part of the second support sheet structure include two layers of electrolytic copper foil.

6. The centering arm according to claim 1, characterized in that: The base material layer of the external fixing part and the connecting part comprises two skin layers located on the outer surface of the centering support and an intermediate layer located between the two skin layers, the intermediate layer and the copper foil layer are stacked, and the skin layer is connected to the intermediate layer or the copper foil layer; Alternatively, the base material layer of the connecting part and the internal fixing part includes a skin layer arranged on the outer surface of one side thereof and an intermediate layer arranged with a gap between the skin layer, the copper foil layer and the intermediate layer are stacked, the skin layer is connected to the copper foil layer, and a pad part is provided on the other side surface of the internal fixing part, the pad part is electrically connected to the copper foil layer, and the voice coil lead is electrically connected to the pad part.

7. The centering arm according to claim 6, characterized in that: At least one of the skin layer and the middle layer is a PI material layer.

8. A sound-generating device, characterized in that: The invention comprises a shell and a vibration system, wherein the vibration system comprises a diaphragm assembly, a centering support and a voice coil, wherein an outer fixing portion of the centering support is connected to the shell, an inner fixing portion of the centering support is connected to the voice coil, the copper foil layer on the outer fixing portion is electrically connected to an external circuit, and the copper foil layer on the inner fixing portion is electrically connected to a lead of the voice coil, and the centering support is the centering support according to any one of claims 1 to 7.

9. The sound generating device according to claim 8, characterized in that: One end of the voice coil is connected to the diaphragm assembly, and one end of the voice coil away from the diaphragm assembly is connected to the centering support plate; Alternatively, the centering support plate is located between the voice coil and the diaphragm assembly.

10. An electronic device, characterized in that: Comprising a sound generating device according to claim 8 or 9.

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