Vibration system and sounding monomer having the same

Abstract

The present invention discloses a vibration system and a sounding element having the vibration system. The vibration system includes a diaphragm assembly and a voice coil. The diaphragm assembly includes a sounding diaphragm and a supporting diaphragm stacked together. The sounding diaphragm includes a central portion, a surround portion, and an edge portion connected in sequence from the inside outwards. The supporting diaphragm includes a first connecting portion attached to the edge of the central portion, a second connecting portion attached to the edge portion, and a deformation portion connecting the first connecting portion and the second connecting portion. The voice coil drives the diaphragm assembly to vibrate. The voice coil is connected to the supporting diaphragm, and the deformation portion protrudes away from the voice coil; or the voice coil is connected to the sounding diaphragm, and the deformation portion protrudes towards the voice coil. The deformation portion is a wavy structure including a plurality of protrusions, and the plurality of protrusions are connected in sequence along the direction from the central portion to the edge portion. The vibration system provided by the present invention has a small thickness and a light mass, and the sounding element having the vibration system has good sensitivity.

Description

Technical Field

[0001] The present invention relates to the technical field of electroacoustic conversion, and particularly to a vibration system and a sounding element having the vibration system. Background Art

[0002] A sounding element is an important accessory in electronic products, which is used to convert digital signals into sound waves for playback. The sounding element includes a vibration system and a magnetic circuit system having a magnetic gap. The vibration system includes a diaphragm, a voice coil inserted into the magnetic gap and driving the diaphragm to vibrate, and a vibration system for keeping the voice coil reciprocating axially in the magnetic gap. In some existing sounding elements, a centering washer is provided to suppress the polarization phenomenon during the movement of the voice coil. However, in the existing centering washer, the voice coil movement is supported by multiple vibration arms, and the vibration arms themselves have a tendency to rotate, resulting in a flipping torque of the centering washer in its plane, and the effect of suppressing the polarization of the voice coil has limitations.

[0003] Therefore, it is necessary to provide a new vibration system to solve the above technical problems. Summary of the Invention

[0004] The main object of the present invention is to provide a vibration system and a sounding element having the vibration system, aiming to solve the technical problem that the centering washer supporting the voice coil in the existing sounding element has a poor effect on suppressing the polarization of the voice coil.

[0005] To achieve the above object, the vibration system provided by the present invention includes:

[0006] A diaphragm assembly, the diaphragm assembly includes a sounding diaphragm and a supporting diaphragm stacked, the sounding diaphragm includes a central portion, a surround portion and an edge portion connected in sequence from inside to outside, the supporting diaphragm includes a first connecting portion attached to the edge of the central portion, a second connecting portion attached to the edge portion, and a deformation portion connecting the first connecting portion and the second connecting portion;

[0007] A voice coil, the voice coil drives the diaphragm assembly to vibrate, the voice coil is connected to the supporting diaphragm, the surround portion protrudes away from the voice coil, or the voice coil is connected to the sounding diaphragm, and the surround portion protrudes towards the voice coil;

[0008] The deformation portion is a wavy structure including a plurality of protrusions, and the plurality of protrusions are sequentially connected in the direction from the central portion to the edge portion.

[0009] Preferably, the whole deformation portion protrudes towards the surround portion.

[0010] Preferably, the whole deformation portion is located in the space formed by the plane where the first connecting portion is located and the surround portion.

[0011] Preferably, the number of the deformation parts is multiple, the multiple deformation parts are arranged at intervals around the voice coil, and a hollow area is formed between adjacent deformation parts.

[0012] Preferably, the voice coil includes two long sides arranged oppositely, two short sides arranged oppositely, and four corner areas connecting the long sides and the short sides;

[0013] The multiple deformation parts include two first deformation parts, and the two first deformation parts are respectively arranged corresponding to the two long sides of the voice coil;

[0014] Alternatively, the multiple deformation parts include two second deformation parts, and the two second deformation parts are respectively arranged corresponding to the two short sides of the voice coil;

[0015] Alternatively, the multiple deformation parts include two first deformation parts and two second deformation parts, the two first deformation parts are respectively arranged corresponding to the two long sides of the voice coil, and the two second deformation parts are respectively arranged corresponding to the two short sides of the voice coil.

[0016] Preferably, the vibration system further includes multiple centering supports, the centering supports and the diaphragm assembly are respectively connected to opposite sides of the voice coil, the centering supports are arranged opposite to the hollow areas, and the centering supports include an inner fixing part, an outer fixing part, and a bent cantilever connecting the inner fixing part and the outer fixing part.

[0017] Preferably, the voice coil includes two long sides arranged oppositely, two short sides arranged oppositely, and four corner areas connecting the long sides and the short sides; the multiple deformation parts include two first deformation parts and two second deformation parts, the two first deformation parts are respectively arranged corresponding to the two long sides of the voice coil, and the two second deformation parts are respectively arranged corresponding to the two short sides of the voice coil;

[0018] Four of the hollow areas are formed between the first deformation parts and the second deformation parts in the four corner areas of the voice coil;

[0019] The number of the centering supports is four, and the four centering supports are respectively arranged corresponding to the four hollow areas one by one.

[0020] Preferably, the centering support is an FPCB or a metal structural member, and a first pad for feeding power connection with the voice coil and a second pad for electrical connection with an external circuit are arranged on the centering support.

[0021] Preferably, the first connecting part for supporting the diaphragm is a ring structure, and the second connecting part for supporting the diaphragm is a ring structure.

[0022] Preferably, the support diaphragm includes two first substrate layers and an adhesive layer disposed between the two first substrate layers, and the first substrate layer is a polyetheretherketone layer or a thermoplastic elastomer layer.

[0023] Preferably, the thermoplastic elastomer is TPU or TPEE.

[0024] Preferably, the support diaphragm further includes an adhesive layer and a second substrate layer sequentially disposed outside one of the first substrate layers, and the second substrate layer is a polyetheretherketone layer or a thermoplastic elastomer layer;

[0025] The materials of the first substrate layer and the second substrate are the same, or the materials of the first substrate layer and the second substrate layer are different.

[0026] Preferably, the support diaphragm is a conductive diaphragm, and the support diaphragm further includes a third pad disposed on the first connection portion and a fourth pad disposed on the second connection portion. The third pad is electrically connected to the voice coil for power supply, and the fourth pad is used for electrical connection with an external circuit.

[0027] Preferably, the support diaphragm includes two third substrate layers and a conductive layer disposed between the two third substrate layers, and the third substrate layer is at least one of a polyetheretherketone layer, a polyarylate layer, a polyetherimide layer, a polyimide layer, a polyphenylene sulfide layer, a polyethylene naphthalate layer, a polyethylene terephthalate layer, and a thermoplastic elastomer layer;

[0028] The third pad and the fourth pad expose from the third substrate layer.

[0029] Preferably, the third substrate layer is a thermoplastic elastomer, and the third substrate layer is connected to the conductive layer by a hot pressing method.

[0030] Preferably, the support diaphragm is prepared by the following method:

[0031] Stack the conductive layer material on one of the third substrate layers by hot pressing treatment;

[0032] Etch the conductive material to form the conductive layer with conductive lines;

[0033] Take another third substrate layer and stack it on the conductive layer by hot pressing treatment so that the conductive layer is disposed between the two third substrate layers.

[0034] Preferably, the conductive layer is a copper foil; the material of the third substrate layer is TPU material or TPEE material.

[0035] The present invention also provides a sounding element, characterized by comprising a chassis with a receiving space, a magnetic circuit system received in the chassis, and the vibration system as described above. The magnetic circuit system forms a magnetic gap. The diaphragm assembly is fixedly arranged at the top of the chassis, and the voice coil is inserted into the magnetic gap.

[0036] In the technical solution of the present invention, by arranging the supporting diaphragm and the sounding diaphragm to be attached to each other, the supporting diaphragm restricts the vibration direction of the sounding diaphragm, reduces or avoids the polarization phenomenon of the sounding diaphragm, avoids the disconnection of the voice coil lead connected to the voice coil, reduces the non-linear distortion, and increases the stability of the sounding element. Compared with the centering washer in the prior art, the supporting diaphragm in the present invention is lighter and thinner, making the sounding element provided with this vibration system thinner, improving the space utilization rate in the axial direction of the sounding element, increasing the BL value, and improving the frequency response of the sounding element. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0038] Figure 1 It is a disassembled structural schematic diagram of a sounding element according to an embodiment of the present invention;

[0039] Figure 2 is Figure 1 a sectional structural schematic diagram of the shown sounding element;

[0040] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A shown;

[0041] Figure 4 It is a disassembled structural schematic diagram of a sounding element according to another embodiment of the present invention;

[0042] Figure 5 is Figure 4 a sectional structural schematic diagram of the shown sounding element;

[0043] Figure 6 is Figure 5 an enlarged structural schematic diagram of part B shown;

[0044] Figure 7 It is a sectional structural schematic diagram of a deformation part according to an embodiment of the present invention;

[0045] Figure 8 It is a partial structural schematic diagram of a sounding element according to another embodiment of the present invention;

[0046] Figure 9 is Figure 8 a partial structural schematic diagram of the sounding element shown;

[0047] Figure 10 is a disassembled structural schematic diagram of the sounding element according to another embodiment of the present invention;

[0048] Figure 11 is Figure 10 a partial structural schematic diagram of the sounding element shown;

[0049] Figure 12 is a cross-sectional structural schematic diagram of the supporting diaphragm according to an embodiment of the present invention;

[0050] Figure 13 is a cross-sectional structural schematic diagram of the supporting diaphragm according to another embodiment of the present invention.

[0051] Explanation of the reference numerals in an embodiment:

[0052]

[0053]

[0054] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0055] Next, the technical solutions in this embodiment will be clearly and completely described with reference to the accompanying drawings in this embodiment. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back...) in this embodiment are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0057] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In the present invention, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0060] As Figure 1 、 Figure 2 、 Figure 3 Figure 7 shown, the vibration system provided by the present invention includes a diaphragm assembly 1 and a voice coil 3. The diaphragm assembly 1 includes a sounding diaphragm 11 and a supporting diaphragm 13 stacked. The sounding diaphragm 11 includes a central portion 111, a surround portion 113, and an edge portion 115 connected in sequence from the inside out. The supporting diaphragm 13 includes a first connecting portion 131 attached to the edge of the central portion 111, a second connecting portion 133 attached to the edge portion 115, and a deformation portion 135 connecting the first connecting portion 131 and the second connecting portion 133; the voice coil 3 drives the diaphragm assembly 1 to vibrate, the voice coil 3 is connected to the supporting diaphragm 13, the deformation portion 135 protrudes away from the voice coil 3, or the voice coil 3 is connected to the sounding diaphragm 11, and the deformation portion 135 protrudes towards the voice coil 3. The deformation portion 135 is a wavy structure including a plurality of protrusions 1351, and the plurality of protrusions 1351 are connected in sequence along the direction from the central portion 111 to the edge portion 115.

[0061] For convenience of description, take Figure 1The x-axis direction shown is the axial direction of the sound emitting unit 100, and the y-axis direction is the tangential direction of the sound emitting unit 100 for explanation. This vibration system is used in the sound emitting unit 100. The voice coil 3 is inserted into the magnetic gap 20 of the sound emitting unit 100. The diaphragm assembly 1 is held on the chassis 30 or the yoke. Through electromagnetic action, the voice coil 3 is maintained to move axially in the magnetic gap 20, so that the voice coil 3 drives the diaphragm assembly 1 to vibrate. In the present invention, the voice coil 3 drives the sounding diaphragm 11 and the supporting diaphragm 13 to move together. The sounding diaphragm 11 vibrates to achieve vibration and sound emission, and the supporting diaphragm 13 can vibrate together with the sounding diaphragm 11. During the vibration of the supporting diaphragm 13, the deformation part 135 can undergo a certain deformation to increase the vibration stroke of the supporting diaphragm 13. At the same time, since the sounding diaphragm 11 and the supporting diaphragm 13 are attached, the movement of the sounding diaphragm 11 is restricted by the supporting diaphragm 13, thereby avoiding the polarization phenomenon of the sounding diaphragm 11 deviating from the axial vibration; compared with the vibration arm in the centering washer 5 in the prior art, the first connecting part 131 and the second connecting part 133 are directly connected, and the protruding direction of the deformation part 135 is the same as that of the folded ring part 113, so that the polarization phenomenon caused by the vibration arm being subjected to a flipping torque in the prior art can be avoided, and the polarization of the sounding diaphragm 11 in the tangential direction can be reduced or avoided. The supporting diaphragm 13 and the sounding diaphragm 11 can be made of the same material or process. Referring to Figure 7 , by providing a plurality of successively connected protrusions 1351, the deformation part 135 forms a wavy structure that protrudes integrally towards the folded ring part 113. In the present invention, the number of the protrusions 1351 is not limited. Please refer to Figure 3 , in this embodiment, the deformation part 135 includes two protrusions 1351; please refer to Figure 7 , the deformation part 135 includes 4 protrusions 1351. Those skilled in the art can set the number of the protrusions 1351 according to their own needs. In one embodiment, the first connecting part 131 of the supporting diaphragm 13 is a ring structure, and the second connecting part 133 of the supporting diaphragm 13 is a ring structure.

[0062] In the present invention, by providing the supporting diaphragm 13 and the sounding diaphragm 11 to be attached to each other, the supporting diaphragm 13 restricts the vibration direction of the sounding diaphragm 11, reduces or avoids the polarization phenomenon of the sounding diaphragm 11, thereby avoiding the disconnection of the voice coil lead connected to the voice coil 3, reducing the nonlinear distortion, increasing the stability of the sound emitting unit 100; compared with the centering washer in the prior art, the supporting diaphragm 13 in the present invention is lighter and thinner, making the sound emitting unit 100 provided with this vibration system thinner, improving the space utilization rate in the axial direction of the sound emitting unit 100, increasing the BL value, and improving the frequency response of the sound emitting unit 100.

[0063] Please refer to Figure 1 , Figure 2 and Figure 3In the vibration system of the sound-generating monomer 100, the voice coil 3 drives the diaphragm assembly 1 to vibrate, the voice coil 3 is connected to the supporting diaphragm 13, and the deformation portion 135 and the folding ring portion 113 are convexly arranged away from the voice coil 3, that is, in this embodiment, the sound-generating diaphragm 11 is a convex diaphragm. Figure 4 , Figure 5 and Figure 6 In the vibration system of another sound unit 100, the voice coil 3 drives the diaphragm assembly 1 to vibrate, the voice coil 3 is connected to the sound diaphragm 11, the deformation portion 135 and the folding ring portion 113 are protruded toward the voice coil 3, that is, in this embodiment, the sound diaphragm 11 is a concave membrane, and the deformation portion 135 and the folding ring portion 113 are configured to protrude toward the voice coil 3, thereby reducing the external size of the sound unit 100. The sound unit 100 is placed in the whole machine, and the airflow space between the diaphragm assembly 1 and the whole machine becomes larger, thereby avoiding poor airflow due to the narrow airflow space and improving the sound quality.

[0064] In one embodiment, the deformation portion 135 as a whole is protruded toward the direction close to the folding ring portion 113, that is, the deformation portion 135 and the folding ring portion 113 are simultaneously protruded toward the direction away from the voice coil 3, or are simultaneously protruded toward the direction close to the voice coil 3. In this way, it is not easy for the deformation portion 135 and the folding ring portion 113 to interfere with each other during the movement of the voice coil 3. Furthermore, the deformation portion 135 is entirely located in the space formed by the plane where the first connecting portion 131 is located and the folding ring portion 113. Generally, the first connecting portion 131 and the second connecting portion 133 are in the same plane. By accommodating the deformation portion 135 in the space formed by the plane where the first connecting portion 131 is located and the folding ring portion 113, it is beneficial to set the product thinly.

[0065] Please refer to Figure 10 and Figure 11 , the number of the deformation parts 135 is multiple, and the multiple deformation parts 135 are arranged at intervals around the voice coil 3, and a hollow area 132 is formed between adjacent deformation parts 135. In one embodiment, the first connection part 131 includes multiple first straight sides 1311 and multiple first arcuate sides 1313, and the first straight sides 1311 and the first arcuate sides 1313 are connected end to end in sequence, and the second connection part 133 includes multiple second straight sides 1331 and multiple second arcuate sides 1333, and the second straight sides 1331 and the second arcuate sides 1333 are connected end to end in sequence, and the deformation part 135 connects the first straight side 1311 and the second straight side 1331, and the first arcuate side 1313, the second arcuate side 1333, and the hollow area 132 is formed between two adjacent deformation parts 135 connected to the first arcuate side 1313. The hollow area 132 can be provided to reduce the weight of the supporting diaphragm 13 , and the hollow area 132 is provided between the first arcuate edge 1313 and the second arcuate edge 1333 , thereby reducing the influence of the hollow area 132 on the supporting diaphragm 13 in limiting the polarized vibration ability of the sound-emitting diaphragm 11 .

[0066] In one embodiment, the voice coil 3 includes two long sides 31 disposed opposite to each other, two short sides 33 disposed opposite to each other, and four corner regions 35 connecting the long sides 31 and the short sides 33; the plurality of deformation portions 135 include two first deformation portions 135a, and the two first deformation portions 135a are respectively disposed corresponding to the two long sides 31 of the voice coil 3. In another embodiment, the plurality of deformation portions 135 include two second deformation portions 135b, and the two second deformation portions 135b are respectively disposed corresponding to the two short sides 33 of the voice coil 3. In still another embodiment, the plurality of deformation portions 135 include two first deformation portions 135a and two second deformation portions 135b, the two first deformation portions 135a are respectively disposed corresponding to the two long sides 31 of the voice coil 3, and the two second deformation portions 135b are respectively disposed corresponding to the two short sides 33 of the voice coil 3. That is, the plurality of deformation portions are disposed along the long sides 31 and / or the short sides 33 of the voice coil 3 to increase the polarization holding force of the support diaphragm 13 on the extending directions of the long sides 31 and the short sides 33 of the voice coil 3.

[0067] Please refer to Figure 1 、 Figure 3 、 Figure 8 、 Figure 9 and Figure 11 ,the vibration system further includes a plurality of centering supports 5, the centering supports 5 and the diaphragm assembly 1 are respectively connected to the opposite sides of the voice coil 3, the centering supports 5 are disposed opposite to the hollow region 132, and the centering supports 5 include an inner fixing portion 55, an outer fixing portion 57, and a curved cantilever 59 connecting the inner fixing portion 55 and the outer fixing portion 57. By providing the centering supports 5, both ends of the voice coil 3 disposed along the axial direction are directly or indirectly connected to the centering supports 5 and the support diaphragm 13 respectively, so that the polarization of the voice coil 3 can be restricted through the centering supports 5 and the support diaphragm 13. By providing the centering supports 5 opposite to the hollow region 132, the pulling force for restricting polarization at the first arc edge 1313 of the support diaphragm 13 is increased, and the influence of the setting of the hollow region 132 on restricting the polarization of the support diaphragm 13 is reduced.

[0068] The voice coil 3 includes two relatively arranged long sides 31, two relatively arranged short sides 33, and four corner regions 35 connecting the long sides 31 and the short sides 33; the plurality of deformation parts 135 include two first deformation parts 135a and two second deformation parts 135b, the two first deformation parts 135a are respectively arranged corresponding to the two long sides 31 of the voice coil 3, and the two second deformation parts 135b are respectively arranged corresponding to the two short sides 33 of the voice coil 3; in the four corner regions 35 of the voice coil 3, four hollow regions 132 are formed between the first deformation parts 135a and the second deformation parts 135b; the number of the centering supports 5 is four, and the four centering supports 5 are respectively arranged corresponding to the four hollow regions 132 one by one. By separately arranging 4 centering supports 5 corresponding to 4 hollow regions 132, the centering supports 5 are used to make up for the insufficient ability of the support diaphragm 13 to suppress the polarization of the voice coil 3 at the hollow regions 132 due to the arrangement of the hollow regions 132.

[0069] Furthermore, the centering support 5 is an FPCB (Flexible Printed Circuit Board) or a metal structural member, and a first pad 51 electrically connected to the voice coil 3 and a second pad 53 for electrically connecting to an external circuit are arranged on the centering support 5. Specifically, the inner fixing part 55 supports the voice coil 3, the outer fixing part 57 is connected to the chassis 30, the first pad 51 is arranged on the inner fixing part 55, and the second pad 53 is arranged on the outer fixing part 57. By arranging the first pad 51 and the second pad 53, the voice coil 3 and the external circuit can be electrically connected through the centering support 5, structures such as voice coil leads and wiring terminals are omitted, thereby avoiding poor product quality caused by the breakage of the voice coil leads and improving the service life of the product.

[0070] In one embodiment, the supporting diaphragm 13 includes two first substrate layers (not shown) and an adhesive layer (not shown) disposed between the two first substrate layers. The first substrate layer is a polyetheretherketone layer (PEEK) or a thermoplastic elastomer layer. The adhesive layer may specifically be silicone. The thermoplastic elastomer layer may be at least one of styrene-based, olefin-based, diene-based, vinyl chloride-based, urethane-based, ester-based, amide-based, organofluorine-based, organosilicon-based, and ethylene-based thermoplastic elastomers. Of course, it is not limited to the above several types. Specifically, it may be thermoplastic polyester elastomer (TPEE) or thermoplastic polyurethane elastomer rubber (TPU). In another embodiment, the supporting diaphragm 13 further includes an adhesive layer and a second substrate layer sequentially disposed outside one of the first substrate layers. The second substrate layer is a polyetheretherketone layer or a thermoplastic elastomer layer; the materials of the first substrate layer and the second substrate are the same, or the materials of the first substrate layer and the second substrate layer are different. Thus, a five-layer structure in which the first substrate layer, the adhesive layer, the first substrate layer, the adhesive layer, and the second substrate layer are stacked is formed. The supporting diaphragm 13 can bond, compound, and form each material layer by means of hot pressing and laminating. Those skilled in the art can set the material of the supporting diaphragm 13, the thickness of each material layer, and the order in which each material layer is stacked according to actual needs.

[0071] Please refer to Figure 10 and Figure 11 , the supporting diaphragm 13 is a conductive diaphragm. The supporting diaphragm 13 further includes a third pad 137 disposed on the first connection portion 131 and a fourth pad 139 disposed on the second connection portion 133. The third pad 137 is fed and connected to the voice coil 3, and the fourth pad 139 is used for electrical connection with an external circuit. The difference from the foregoing embodiment is that in this embodiment, the supporting diaphragm 13 not only has the function of restricting the polarization of the diaphragm, but also has the function of electrically connecting the voice coil 3 and the external circuit. Since the supporting diaphragm 13 is a conductive diaphragm, the centering washer 5 may not be provided in the vibration system or the first pad 51 and the second pad 53 may not be provided on the centering washer 5. In this embodiment, the third pad 137 extends from the first straight edge 1311 in a direction away from the second straight edge 1331. The third pad 137 is disposed within the first connection portion 131, and the fourth pad 139 is disposed on the second arc edge 1333 to facilitate connection with the external circuit.

[0072] Furthermore, an exposed hole 112 corresponding to the fourth pad 139 is formed on the edge portion 115, and the fourth pad 139 is electrically connected to an external circuit through the exposed hole 112. When the voice coil 3 is connected to the support diaphragm 13 and the sounding diaphragm 11 is a convex diaphragm, the second connecting portion 133 is directly fixed to the chassis 30, and the fourth pad 139 can be directly electrically connected to the outside through the chassis 30; when the voice coil 3 is connected to the sounding diaphragm 11 and the sounding diaphragm 11 is a concave diaphragm, the second connecting portion 133 is indirectly fixed to the chassis 30 through the edge portion 115. By providing the exposed hole 112, the fourth pad 139 on the second connecting portion 133 can be electrically connected to the outside through the exposed hole 112 and the chassis 30.

[0073] Please refer to Figure 12 and Figure 13, the supporting diaphragm 13 includes two third substrate layers 134 and a conductive layer 136 disposed between the two third substrate layers 134. The third substrate layer 134 is connected to the conductive layer 136 by hot pressing. The third substrate layer 134 is at least one of a polyetheretherketone layer (PEEK), a polyarylate layer (PAR), a polyetherimide layer (PEI), a polyimide layer (PI), a polyphenylene sulfide layer (PPS), a polyethylene naphthalate layer (PEN), a polyethylene terephthalate layer (PET), and a thermoplastic elastomer layer. The conductive layer 136 is a metal foil, which is a copper foil in this embodiment. The thermoplastic elastomer includes at least one of styrene-based, olefin-based, diene-based, vinyl chloride-based, urethane-based, ester-based, amide-based, organofluorine-based, organosilicon-based, and ethylene-based thermoplastic elastomers, and is not limited to the above several types. Specifically, it can be a thermoplastic polyester elastomer (TPEE), a thermoplastic polyurethane elastomer rubber (TPU), etc. In another embodiment, the supporting diaphragm 13 further includes a fourth substrate layer 138 attached to the surface of the third substrate layer 134 away from the conductive layer 136. The fourth substrate layer 138 can be at least one of a polyetheretherketone layer (PEEK), a polyarylate layer (PAR), a polyetherimide layer (PEI), a polyimide layer (PI), a polyphenylene sulfide layer (PPS), a polyethylene naphthalate layer (PEN), a polyethylene terephthalate layer (PET), and a thermoplastic elastomer layer. Thus, a five-layer structure in which the fourth substrate layer 138, the third substrate layer 134, the conductive layer 136, the third substrate layer 134, and the fourth substrate layer 138 are stacked is formed. The supporting diaphragm 13 can bond, composite, and form each material layer by hot pressing and laminating. Those skilled in the art can set the materials of the supporting diaphragm 13, the thicknesses of each material layer, and the order in which each material layer is stacked according to actual needs.

[0074] The supporting diaphragm 13 is prepared by the following method:

[0075] Step S1: Stack the conductive layer material on one of the third substrate layers 134 through hot pressing.

[0076] Step S2: Etch the conductive material to form the conductive layer 136 with conductive circuits.

[0077] Step S3: Take another third substrate layer 134 and stack it on the conductive layer 136 through hot pressing, so that the conductive layer 136 is disposed between the two third substrate layers 134.

[0078] Of course, for the support diaphragm 13 with a five-layer structure, one third substrate layer 134 can be first connected to the fourth substrate layer 138, and then connected to the conductive layer 136. However, the formation steps of the present invention are not limited to the above. It can also be that the fourth substrate layer 138, the third substrate layer 134 and the conductive layer 136 are connected together through a single hot pressing step. After the conductive layer 136 is etched into conductive circuits, the third substrate layer 134 and the fourth substrate layer 138 are sequentially placed above the conductive layer 136, and then a support diaphragm 13 is formed through another hot pressing step. The third substrate layer 134 and the fourth substrate layer 138 are combined together, and the fourth substrate layer 138 is not directly combined with the conductive layer 136. Among them, the fourth substrate layer 138 can play a good protective role for the internal third substrate layer 134 and the conductive layer 136.

[0079] Please refer to Figure 1 , the present invention also provides a sounding monomer 100, which includes a frame 30 having a receiving space, a magnetic circuit system 50 received in the frame 30, and the vibration system as described above. The magnetic circuit system 50 forms a magnetic gap 20. The diaphragm assembly 1 is fixedly disposed on the top of the frame 30, and the voice coil 3 is inserted into the magnetic gap 20. The specific structure of the vibration system refers to the above embodiments. Since the sounding monomer 100 of the present invention adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0080] Specifically, the frame 30 includes a bottom plate 301 and a side wall 303 disposed on the bottom plate 301. The bottom plate 301 and the side wall 303 enclose a receiving space. The magnetic circuit system 50 includes a main magnet 501, an auxiliary magnet 503 disposed around the main magnet 501, a main magnetic conductive plate 505 attached to the main magnet 501, and an auxiliary magnetic conductive plate 507 attached to the auxiliary magnet 503. A magnetic gap 20 is formed between the main magnet 501 and the auxiliary magnet 503. The vibration system further includes a dome 7 disposed on the side of the diaphragm assembly away from the voice coil 3, and the dome 7 is disposed opposite to the central portion 111.

[0081] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A vibration system, characterized in that, Comprising: A diaphragm assembly, the diaphragm assembly includes a sounding diaphragm and a supporting diaphragm stacked on each other. The sounding diaphragm includes a central portion, a surround portion, and an edge portion connected in sequence from the inside outwards. The supporting diaphragm includes a first connecting portion attached to the edge of the central portion, a second connecting portion attached to the edge portion, and a deformation portion connecting the first connecting portion and the second connecting portion; A voice coil, the voice coil drives the diaphragm assembly to vibrate, the voice coil is connected to the supporting diaphragm, the surround portion protrudes away from the voice coil, or the voice coil is connected to the sounding diaphragm, the surround portion protrudes towards the voice coil; The deformation portion is a wavy structure including a plurality of protrusions, and the plurality of protrusions are sequentially connected in the direction from the central portion to the edge portion; The whole of the deformation portion protrudes towards the surround portion; The number of the deformation portions is multiple, and the multiple deformation portions are arranged at intervals around the voice coil, and a hollow area is formed between adjacent deformation portions; The vibration system further includes a plurality of centering supports, the centering supports and the diaphragm assembly are respectively connected to opposite sides of the voice coil, the centering supports are arranged opposite to the hollow areas, and the centering supports include an inner fixing portion, an outer fixing portion, and a curved cantilever connecting the inner fixing portion and the outer fixing portion.

2. The vibration system according to claim 1, wherein The whole of the deformation portion is located in the space formed by the plane where the first connecting portion is located and the surround portion.

3. The vibration system according to claim 1, wherein The voice coil includes two long sides arranged opposite to each other, two short sides arranged opposite to each other, and four corner regions connecting the long sides and the short sides; The plurality of deformation portions include two first deformation portions, and the two first deformation portions are respectively arranged corresponding to the two long sides of the voice coil; Alternatively, the plurality of deformation portions include two second deformation portions, and the two second deformation portions are respectively arranged corresponding to the two short sides of the voice coil; Alternatively, the plurality of deformation portions include two first deformation portions and two second deformation portions, the two first deformation portions are respectively arranged corresponding to the two long sides of the voice coil, and the two second deformation portions are respectively arranged corresponding to the two short sides of the voice coil.

4. The vibration system according to claim 1, characterized in that, The voice coil includes two long sides arranged opposite to each other, two short sides arranged opposite to each other, and four corner regions connecting the long sides and the short sides; the plurality of deformation portions include two first deformation portions and two second deformation portions, the two first deformation portions are respectively arranged corresponding to the two long sides of the voice coil, and the two second deformation portions are respectively arranged corresponding to the two short sides of the voice coil; Four of the hollow areas are formed between the first deformation portion and the second deformation portion in the four corner regions of the voice coil; The number of the centering supports is four, and the four centering supports are respectively arranged corresponding to the four hollow areas one by one.

5. The vibration system according to claim 1, characterized in that, The centering support is an FPCB or a metal structural member, and a first pad for feeding power connection with the voice coil and a second pad for electrical connection with an external circuit are arranged on the centering support.

6. The vibration system according to claim 1, characterized in that, The first connecting portion supporting the diaphragm is a ring structure, and the second connecting portion supporting the diaphragm is a ring structure.

7. The vibration system according to any one of claims 1 to 6, characterized in that, The diaphragm support includes two first base material layers and an adhesive layer disposed between the two first base material layers. The first base material layer is a polyether ether ketone layer or a thermoplastic elastomer layer.

8. The vibration system according to claim 7, characterized in that The thermoplastic elastomer is TPU or TPEE.

9. The vibration system according to claim 7, wherein The diaphragm support further includes an adhesive layer and a second base material layer sequentially disposed outside one of the first base material layers. The second base material layer is a polyether ether ketone layer or a thermoplastic elastomer layer; The materials of the first base material layer and the second base material are the same, or the materials of the first base material layer and the second base material are different.

10. The vibration system according to any one of claims 1 to 3, characterized in that, The diaphragm support is a conductive diaphragm, and the diaphragm support further includes a third pad disposed on the first connecting portion and a fourth pad disposed on the second connecting portion. The third pad is electrically connected to the voice coil for power supply, and the fourth pad is used for electrical connection with an external circuit.

11. The vibration system according to claim 10, wherein The diaphragm support includes two third base material layers and a conductive layer disposed between the two third base material layers. The third base material layer is at least one of a polyether ether ketone layer, a polyarylate layer, a polyetherimide layer, a polyimide layer, a polyphenylene sulfide layer, a polyethylene naphthalate layer, a polyethylene terephthalate layer, and a thermoplastic elastomer layer; The third pad and the fourth pad expose from the third base material layer.

12. The vibration system according to claim 11, wherein, The third base material layer is a thermoplastic elastomer, and the third base material layer is connected to the conductive layer by a hot pressing method.

13. The vibration system according to claim 12, characterized in that, The diaphragm support is prepared by the following method: Stack the conductive layer material on one of the third base material layers by hot pressing treatment; Etch the conductive material to form the conductive layer with conductive circuits; Take another third base material layer and stack it on the conductive layer by hot pressing treatment so that the conductive layer is disposed between the two third base material layers.

14. The vibration system according to claim 12, characterized in that, The conductive layer is a copper foil; the material of the third base material layer is TPU material or TPEE material.

15. A sounding unit, characterized in that, It includes a chassis with a receiving space, a magnetic circuit system received in the chassis, and a vibration system according to any one of claims 1 to 14. The magnetic circuit system forms a magnetic gap. The diaphragm assembly is fixedly disposed on the top of the chassis, and the voice coil is inserted into the magnetic gap.

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