Speaker and electronic equipment

Abstract

This invention belongs to the field of loudspeaker technology and discloses a loudspeaker and electronic device. The loudspeaker includes a support, a diaphragm element, and a vibrating element. The support forms a cavity penetrating the upper and lower surfaces. The vibrating element is disposed on the side of the diaphragm element facing the vibrating element, and the vibrating element can drive the diaphragm element to vibrate in a third direction. The vibrating element includes multiple sound-generating structures, which are disposed in the same layer on the support. The loudspeaker and electronic device provided by this invention have high sensitivity and good acoustic performance.

Description

[Technical Field]

[0001] This invention relates to the field of loudspeaker technology, and more particularly to a loudspeaker and an electronic device. [Previous Technology]

[0002] Loudspeakers, as an important electroacoustic device, are widely used in electronic devices. Loudspeakers can be classified into moving-coil loudspeakers, balanced-iron loudspeakers, and piezoelectric loudspeakers according to their technology. Compared with moving-coil loudspeakers, piezoelectric loudspeakers have advantages such as being small, thin, light, and free from magnetic field interference.

[0003] In the prior art, a piezoelectric loudspeaker includes a piezoelectric sheet and a diaphragm stacked with the piezoelectric sheet. The piezoelectric sheet vibrates under the drive of a driving voltage, which in turn causes the diaphragm to vibrate, thereby realizing the sound production of the loudspeaker. One end of the piezoelectric sheet is fixed, forming a cantilever beam structure, while the other end of the piezoelectric sheet can deform upwards or downwards. Furthermore, there is usually only one piezoelectric sheet, resulting in a small area and low sensitivity of the piezoelectric sheet. Under the condition of limited size, the length of the piezoelectric sheet is short, resulting in poor low-frequency performance of the loudspeaker, which affects the acoustic performance of the loudspeaker.

[0004] Therefore, there is an urgent need for a loudspeaker with high sensitivity. [Summary of the Invention]

[0005] One object of the present invention is to provide a loudspeaker with high sensitivity and good acoustic performance.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] Speaker, including:

[0008] A support, the support forming a cavity penetrating the upper and lower surfaces;

[0009] A diaphragm element, the periphery of which is fixedly connected to the bracket;

[0010] A vibration element, wherein the vibration element is disposed on the side of the diaphragm element facing the bracket, and the vibration element is capable of driving the diaphragm element to vibrate in a third direction, and the vibration element includes a plurality of sound-generating structures, wherein the plurality of sound-generating structures are disposed in the same layer on the bracket;

[0011] The plurality of sound-generating structures include a first sound-generating structure and a second sound-generating structure. The first sound-generating structure includes a first free end and a first fixed end opposite to each other in the first direction. The first fixed end is connected to one end of the bracket. The first free end is disposed on the side of the diaphragm element facing the cavity and is fixedly connected to the diaphragm element. The second sound-generating structure includes a second free end and a second fixed end opposite to each other in the first direction. The second fixed end is connected to the other end of the bracket. The second free end is disposed on the side of the diaphragm element facing the cavity and is fixedly connected to the diaphragm element. The first direction is perpendicular to the third direction.

[0012] Optionally, there is a gap between the first sound-generating structure and the second sound-generating structure; the first sound-generating structure and the second sound-generating structure have overlapping portions in the orthographic projection of the second direction, and any two of the first direction, the second direction and the third direction are perpendicular to each other.

[0013] Optionally, the first free end and the second free end are alternately arranged in the second direction;

[0014] Alternatively, both the first sound-generating structure and the second sound-generating structure are provided in multiple ways, and at least two second free ends are provided between two adjacent first free ends in the second direction;

[0015] Alternatively, both the first sound-generating structure and the second sound-generating structure are provided in multiples, and at least two first free ends are provided between two adjacent second free ends in the second direction.

[0016] Optionally, the vibration direction of the first sound-generating structure in the third direction is the same as the vibration direction of the second sound-generating structure in the third direction.

[0017] Optionally, both the first free end and the second free end are provided with a transmission member. The transmission member is located on the side of the first sound-generating structure and the second sound-generating structure away from the cavity. The side of the transmission member away from the first free end and the second free end is connected to the diaphragm element.

[0018] Optionally, the vibration element is provided in two sets. The sound-generating structure of one set of the vibration element is connected to the top surface of the bracket, and a portion of the sound-generating structure of the other set of the vibration element is located above the cavity. The sound-generating structure of the other set of the vibration element is connected to the bottom surface of the bracket, and a portion of the sound-generating structure of the other set of the vibration element is located below the cavity.

[0019] Optionally, the diaphragm element is also provided in two sets, with the two sets of diaphragm elements corresponding one-to-one with the two sets of vibration elements, and the two sets of diaphragm elements are arranged on the side of their respective corresponding vibration elements away from the bracket.

[0020] Optionally, the sound-generating structures of the two sets of vibrating elements have completely overlapping orthographic projections on the plane where the support is located.

[0021] Optionally, the sound-generating structures of the two sets of vibrating elements do not completely overlap on the plane where the support is located.

[0022] Optionally, the lengths of the first sound-generating structures of the two sets of vibration elements are different in the first direction, and the lengths of the second sound-generating structures of the two sets of vibration elements are different in the first direction.

[0023] Optionally, the first sound-generating structures of the two sets of vibrating elements vibrate in opposite directions in the third direction, and the second sound-generating structures of the two sets of vibrating elements vibrate in opposite directions in the third direction, wherein the third direction is perpendicular to the first direction.

[0024] Optionally, the cross-sectional shapes of the plurality of sound-generating structures are all the same; and / or, the cross-section of the sound-generating structure is rectangular, trapezoidal or triangular.

[0025] One object of the present invention is to provide an electronic device having high acoustic performance.

[0026] As conceived above, the technical solution adopted by the present invention is:

[0027] Electronic devices, including speakers as described above.

[0028] The beneficial effects of the present invention:

[0029] The loudspeaker and electronic device provided by the present invention have a bracket forming a cavity that penetrates the upper and lower surfaces. The vibrating element includes multiple sound-generating structures disposed on the bracket in the same layer. The multiple sound-generating structures include a first sound-generating structure and a second sound-generating structure. A portion of the first sound-generating structure is connected to one end of the bracket in a first direction, and a portion of the second sound-generating structure is connected to the other end of the bracket in the first direction. The other portions of the first and second sound-generating structures are both disposed opposite to the cavity, forming a double-sided structure. This results in a larger area between the sound-generating structure and the cavity, increasing the effective area between the vibrating element and the diaphragm element of the loudspeaker, thereby improving the sensitivity of the loudspeaker and thus enhancing the acoustic performance of the loudspeaker and electronic device.

Implementation Method

[0041] To make the technical problem solved by the present invention, the technical solution adopted, and the technical effect achieved clearer, the technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "a plurality of" specifically refers to two or more.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0046] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in the middle of the component.

[0047] Example 1:

[0048] This embodiment provides a loudspeaker with high sensitivity and good acoustic performance.

[0049] For ease of description below, an X, Y, Z coordinate system can be established in some of the accompanying drawings. The plane on which the loudspeaker shown in Figures 4, 5, and 6 is located can be an XY plane. Taking the rectangular loudspeaker shown in Figure 5 as an example, the X-axis is the first direction, which can be the length direction of the loudspeaker; the Y-axis is the second direction, which can be the width direction of the loudspeaker; and the Z-axis is the third direction, which is a direction perpendicular to or approximately perpendicular to the loudspeaker within the manufacturing tolerance range. For example, the Z-axis is the thickness direction of the loudspeaker. It can be seen that in this embodiment, any two of the first direction, the second direction, and the third direction are perpendicular to each other. It is understood that the width of the loudspeaker is smaller than the length of the loudspeaker.

[0050] As shown in Figures 1 to 6, the loudspeaker includes a bracket 100, a diaphragm element 300, and a vibrating element 200. The bracket 100 has an upper surface 110 and a lower surface 120 in the third direction Z. The bracket 100 forms a cavity 130 that penetrates the upper surface 110 and the lower surface 120. The periphery of the diaphragm element 300 is fixedly connected to the bracket 100. The vibrating element 200 is disposed on the side of the diaphragm element 300 facing the bracket 100. When the vibrating element 200 vibrates, it can drive the diaphragm element 300 to vibrate, thereby emitting sound.

[0051] It should be noted that the loudspeaker also includes a circuit board (not shown in the figure). The vibrating element 200 is electrically connected to the circuit board, which is used to send acoustic signals to the vibrating element 200 to excite the vibrating element 200 to vibrate and produce sound. The vibrating element 200 can form a vibrating plane and vibrate to produce sound according to the received acoustic signals, so as to realize the sound production function of the loudspeaker.

[0052] As shown in Figure 4, each group of vibrating elements 200 includes multiple sound-generating structures (not shown). In some optional embodiments, the multiple sound-generating structures are arranged on the same layer of the support 100, that is, the multiple sound-generating structures of each group of vibrating elements 200 are located on the same plane to ensure that the distance between the multiple sound-generating structures and the diaphragm element 300 of the loudspeaker is the same. All multiple sound-generating structures are electrically connected to a circuit board, which is used to send acoustic signals to each sound-generating structure to excite each sound-generating structure to vibrate and generate sound. Optionally, the number of sound-generating structures can be 3, 4, 5, 6, etc., and this embodiment does not limit this. Preferably, the number of sound-generating structures is an even number.

[0053] As an example, the sound-generating structure may include a driver (not shown in the figure) and a cantilever beam (not shown in the figure). One end of the cantilever beam is connected to the support 100, and the other end of the cantilever beam extends to be disposed opposite to the cavity 130 in the third direction Z, and the other end of the cantilever beam is a free end. The driver is connected to the cantilever beam. The driver may be formed above and / or below the cantilever beam. Furthermore, the area of ​​the driver may be equal to or smaller than the area of ​​the cantilever beam. The driver may drive the cantilever beam to vibrate in the third direction Z. As an example, the driver may be any one of a piezoelectric driver, an electrostatic driver, an electromagnetic driver, or a thermoelectric driver.

[0054] In some optional embodiments, the support 100 may include a circuit board (not shown in the figure), the circuit board forming a cavity 130 therethrough. A portion of the sound-generating structure may be directly electrically connected to the circuit board to achieve the transmission of acoustic and electrical signals. In other optional embodiments, the support 100 may not include a circuit board, but only provide support. In still other optional embodiments, the support 100 may include a support structure for support and a circuit board, the circuit board being disposed on the support structure, and a portion of the sound-generating structure being supported on the support structure and electrically connected to the circuit board. The specific structure of the support 100 can also be designed according to actual needs, and this embodiment does not limit it in this way.

[0055] In this embodiment, the plurality of sound-generating structures include a first sound-generating structure 210 and a second sound-generating structure 220. It should be noted that at least one of the first sound-generating structure 210 and the second sound-generating structure 220 is provided. As shown in FIG5, the first sound-generating structure 210 includes a first free end 211 and a first fixed end 212 opposite to each other in the first direction X. The first fixed end 212 is connected to one end of the bracket 100, and the first free end 211 is disposed on the side of the diaphragm element 300 facing the cavity 130 and is fixedly connected to the diaphragm element 300, so that when the first free end 211 vibrates, it can drive the diaphragm element 300 to vibrate. The second sound-generating structure 220 includes a second free end 221 and a second fixed end 222 opposite to each other in the first direction X. The second fixed end 222 is connected to the other end of the bracket 100, and the second free end 221 is disposed on the side of the diaphragm element 300 facing the cavity 130 and is fixedly connected to the diaphragm element 300, so that when the second free end 221 vibrates, it can drive the diaphragm element 300 to vibrate. As can be seen, both the first sound-generating structure 210 and the second sound-generating structure 220 in this embodiment are cantilever beam structures.

[0056] In the loudspeaker provided in this embodiment, the bracket 100 forms a cavity 130 that penetrates the upper surface 110 and the lower surface 120. The vibrating element 200 includes multiple sound-emitting structures disposed on the bracket 100 in the same layer. The multiple sound-emitting structures include a first sound-emitting structure 210 and a second sound-emitting structure 220. The first fixed end 212 of the first sound-emitting structure 210 is connected to one end of the bracket 100 in the first direction X. The second fixed end 222 of the second sound-emitting structure 220 is connected to the other end of the bracket 100 in the first direction X. The first free end 211 and the second free end 221 are both disposed on the side of the diaphragm element 300 facing the cavity 130 and are both connected to the diaphragm element 300, forming a double-sided structure. This makes the area of ​​the sound-emitting structure relative to the diaphragm element 300 larger, increasing the effective area of ​​the vibrating element 200 and the diaphragm element 300, thereby improving the sensitivity of the loudspeaker and thus improving the acoustic performance of the loudspeaker.

[0057] It should be noted that the loudspeaker in this embodiment can be a single-diaphragm loudspeaker or a dual-diaphragm loudspeaker. Figures 1 to 6 in this embodiment show the case where the loudspeaker is a dual-diaphragm loudspeaker.

[0058] Optionally, there is a gap between the first sound-generating structure 210 and the second sound-generating structure 220. This avoids interference when two adjacent sound-generating structures located on the same layer warp and vibrate.

[0059] In some optional embodiments, the first sound-emitting structure 210 and the second sound-emitting structure 220 have overlapping portions in their orthogonal projections in the second direction Y. That is, the first sound-emitting structure 210 and the second sound-emitting structure 220 can be staggered, allowing both the first sound-emitting structure 210 and the second sound-emitting structure 220 to be relatively long, thereby further increasing their area and improving the sensitivity of the loudspeaker. Furthermore, the relatively long lengths of the first sound-emitting structure 210 and the second sound-emitting structure 220 ensure that the forces applied by them to the diaphragm element 300 are similar or the same, thus maintaining the resultant force on the diaphragm element 300 perpendicular to the surface of the diaphragm element 300 facing the cavity 130, improving the driving effect on the diaphragm element 300. Additionally, the relatively long lengths of the first sound-emitting structure 210 and the second sound-emitting structure 220 also reduce the resonant frequency, thereby increasing the low-frequency sensitivity of the loudspeaker.

[0060] For example, the area of ​​the portion where the orthographic projections of the first sound-emitting structure 210 and the second sound-emitting structure 220 overlap in the second direction Y is smaller than the area of ​​the orthographic projection of the first sound-emitting structure 210 in the second direction Y, and smaller than the area of ​​the orthographic projection of the second sound-emitting structure 220 in the second direction Y.

[0061] It is understandable that, as shown in Figures 8 and 9, the first sound-emitting structure 210 and the second sound-emitting structure 220 located on the upper layer do not have overlapping portions in the orthogonal projection of the second direction Y. That is, the first sound-emitting structure 210 and the second sound-emitting structure 220 are not staggered. This embodiment does not limit this.

[0062] For example, one or more of the first sound-generating structure 210 and the second sound-generating structure 220 may be provided, and this embodiment does not limit this.

[0063] In this embodiment, as shown in FIG5, the first free end 211 and the second free end 221 are alternately arranged in the second direction Y. When both the first sound-emitting structure 210 and the second sound-emitting structure 220 are provided, the first free end 211 of one first sound-emitting structure 210 and the second free end 221 of one second sound-emitting structure 220 are arranged sequentially in the second direction Y. When there are two first sound-emitting structures 210 and one second sound-emitting structure 220, the second free end 221 of the second sound-emitting structure 220 is located between the two first free ends 211. When there is one first sound-emitting structure 210 and two second sound-emitting structures 220, the first free end 211 of the first sound-emitting structure 210 is located between the two second free ends 221.

[0064] By alternately setting the first free end 211 and the second free end 221 in the second direction Y, the first sound-emitting structure 210 will not affect the extension of the second sound-emitting structure 220 in the first direction X, and the second sound-emitting structure 220 will not affect the extension of the first sound-emitting structure 210 in the first direction X, so that the lengths of the first sound-emitting structure 210 and the second sound-emitting structure 220 in the first direction X can be relatively long, thereby reducing the resonance frequency and improving the low-frequency sensitivity.

[0065] In some other optional embodiments, the first free end 211 and the second free end 221 may not be alternately arranged. For example, both the first sound-generating structure 210 and the second sound-generating structure 220 are provided in multiples, with at least two second free ends 221 provided between two adjacent first free ends 211 in the second direction Y, or at least two first free ends 211 provided between two adjacent second free ends 221 in the second direction Y. In this way, the mutual influence between the first sound-generating structure 210 and the second sound-generating structure 220 in the length direction can be avoided, so as to reduce the resonant frequency and improve the low-frequency sensitivity. For example, FIG8 is a schematic diagram of two first sound-generating structures 210 between two adjacent second sound-generating structures 220 in the second direction Y.

[0066] Optionally, the vibration direction of the first sound-generating structure 210 of the vibrating element 200 in the third direction Z is the same as the vibration direction of the second sound-generating structure 220 in the third direction Z, so as to ensure that the driving frequency of the diaphragm element 300 can be consistent. It should be noted that when there are multiple vibrating elements 200, the vibration direction of the first sound-generating structure 210 of the same vibrating element 200 in the third direction Z is the same as the vibration direction of the second sound-generating structure 220 in the third direction Z.

[0067] In some optional embodiments, as shown in FIG2, two sets of vibrating elements 200 are provided, and the two sets of vibrating elements 200 are spaced apart in the third direction Z. Correspondingly, two sets of diaphragm elements 300 are also provided, with each set of diaphragm elements 300 corresponding to one set of vibrating elements 200. The two sets of diaphragm elements 300 are located on the side of their respective corresponding vibrating elements 200 away from the support 100, so that both sets of diaphragm elements 300 can work normally. By providing two sets of vibrating elements 200, the two sets of vibrating elements 200 can cooperate with the two diaphragm elements 300, thereby enabling the two diaphragm elements 300 to be driven separately, improving acoustic performance.

[0068] Specifically, a sound-generating structure of one set of vibrating elements 200 is connected to the top surface of the support 100, and a portion of the sound-generating structure of one set of vibrating elements 200 is disposed above the cavity 130; another sound-generating structure of one set of vibrating elements 200 is connected to the bottom surface of the support 100, and a portion of the sound-generating structure of one set of vibrating elements 200 is disposed below the cavity 130.

[0069] Further optionally, the first sound-generating structure 210 (or the first free end 211) of the two sets of vibrating elements 200 vibrates in opposite directions in the third direction Z, and the second sound-generating structure 220 (or the second free end 221) of the two sets of vibrating elements 200 vibrates in opposite directions in the third direction Z. In this embodiment, the first sound-emitting structures 210 (or first free ends 211) of the two sets of vibrating elements 200 move towards each other or away from each other in the third direction Z, and the second sound-emitting structures 220 (or second free ends 221) of the two sets of vibrating elements 200 move towards each other or away from each other in the third direction Z. This causes the vibrations of the first sound-emitting structures 210 (or first free ends 211) of the two sets of vibrating elements 200 in the third direction Z to cancel each other out, and the vibrations of the second sound-emitting structures 220 (or second free ends 221) of the two sets of vibrating elements 200 in the third direction Z to also cancel each other out. As a result, the speaker as a whole has no vibration or the vibration is reduced while driving the diaphragm 310 to vibrate, thus achieving the purpose of vibration reduction, reducing the impact of speaker vibration on electronic equipment, and improving the user experience.

[0070] In some optional embodiments, as shown in Figures 4 and 5, the orthographic projections of the sound-generating structures of the two sets of vibrating elements 200 on the plane where the support 100 is located completely overlap. That is, the shape and size of the first sound-generating structure 210 of the two sets of vibrating elements 200 are the same, and the shape and size of the second sound-generating structure 220 of the two sets of vibrating elements 200 are the same. On the one hand, this facilitates the mass production of the first sound-generating structure 210 and the second sound-generating structure 220, improving production efficiency. On the other hand, it improves the vibration cancellation effect of the first sound-generating structure 210 and the vibration cancellation effect of the second sound-generating structure 220 of the two sets of vibrating elements 200, thereby reducing the vibration amplitude of the loudspeaker. The plane where the support 100 is located is the XY plane in this embodiment.

[0071] For example, the cross-sectional shapes of the multiple sound-generating structures are the same, that is, the shape and size of the first sound-generating structure 210 and the second sound-generating structure 220 are the same, so as to further facilitate the production and manufacturing of the sound-generating structures.

[0072] For example, the cross-section of the sound-generating structure can be rectangular, trapezoidal, triangular, or other shapes, and this embodiment is not limited to this. In this embodiment, as shown in FIG5, there is one first sound-generating structure 210, and the cross-section of the first sound-generating structure 210 is an isosceles trapezoid. There are two second sound-generating structures 220. The first free end 211 of the first sound-generating structure 210 is located between the second free ends 221 of the two second sound-generating structures 220 in the second direction Y. The cross-section of the second sound-generating structure 220 is a right trapezoid. In this embodiment, the angle between the waist and the base of the first sound-generating structure 210 is equal to the angle between the waist and the base of the second sound-generating structure 220 that is not equal to 90°, so that the shapes of the multiple sound-generating structures are more regular, thereby making full use of the planar space above or below the cavity 130.

[0073] It should be noted that the bottom edge of the first sound-generating structure 210 is connected to the bracket 100, and the bottom edge of the second sound-generating structure 220 is connected to the bracket 100, so as to improve the connection strength and reliability between the first sound-generating structure 210 and the second sound-generating structure 220 and the bracket 100.

[0074] Optionally, as shown in Figure 5 or Figure 6, both the first free end 211 and the second free end 221 are provided with a transmission member 230. The transmission member 230 is located on the side of the first sound-generating structure 210 and the second sound-generating structure 220 facing their respective corresponding diaphragm elements 300. The side of the transmission member 230 away from the first free end 211 to which it is connected is connected to the diaphragm element 300, and the side of the transmission member 230 away from the second free end 221 to which it is connected is connected to the diaphragm element 300. It can be seen that in this embodiment, the first free end 211 is connected to the diaphragm element 300 through the transmission member 230, and the second free end 221 is connected to the diaphragm element 300 through the transmission member 230, so that the first free end 211 and the second free end 221 can be transmitted to the diaphragm element 300 through the transmission member 230, and the transmission member 230 can also support the first free end 211 and the second free end 221, thereby improving the stability of the vibrating element 200.

[0075] In some optional embodiments, as shown in FIG3, the diaphragm element 300 includes a diaphragm 310 and a dome 320, wherein the periphery of the diaphragm 310 is fixedly connected between the bracket 100 and the upper fixed frame 500 or the lower fixed frame 600 of the speaker, the dome 320 is fixedly disposed on the side of the diaphragm 310 facing the vibrating element 200, and the transmission member 230 is connected to the corresponding dome 320.

[0076] In some optional embodiments, the loudspeaker further includes a housing (not shown in the figures), which is connected to the bracket 100, as shown in Figures 1 and 2. The housing has a front sound hole 810 and a rear sound hole 820. The diaphragm element 300 is connected to the housing and divides the internal space of the housing into a front sound cavity (not shown in the figures) and a rear sound cavity (not shown in the figures). The front sound hole 810 communicates with the front sound cavity, and the rear sound hole 820 communicates with the rear sound cavity. In this embodiment, both the front sound cavity and the front sound hole 810 are connected to the cavity 130. When there are two diaphragm elements 300, the front sound cavities of the two diaphragm elements 300 are connected through the cavity 130 and share a front sound hole 810. For example, the front sound hole 810 is opened on the bracket 100. The rear sound cavities of the two diaphragm elements 300 are independent of each other and each corresponds to a rear sound hole 820.

[0077] For example, as shown in Figures 1 and 2, the outer casing also includes an upper shell 400, an upper fixing frame 500, a lower fixing frame 600, and a lower shell 700. The upper shell 400, the upper fixing frame 500, the bracket 100, the lower fixing frame 600, and the lower shell 700 are connected sequentially along the third direction Z. Two diaphragm elements 300 are respectively disposed on the upper fixing frame 500 and the lower fixing frame 600. Of the two rear acoustic holes 820, one rear acoustic hole 820 is formed by the upper shell 400 and the upper fixing frame 500, and the other rear acoustic hole 820 is formed by the lower shell 700 and the lower fixing frame 600.

[0078] The circuit board sends acoustic signals to the sound-generating structure of the two vibrating elements 200, driving the sound-generating structure to vibrate. The vibration of the sound-generating structure can push the air in the cavity 130 to flow to the outside through the front sound hole 810, or the air outside the outer shell can enter the cavity 130 through the front sound hole 810. The sound-generating structure also drives the diaphragm element 300 to vibrate, thereby compressing the air in the front and rear sound cavities to produce sound, thus realizing the vibration sound generation function.

[0079] Example 2:

[0080] The difference between this embodiment and Embodiment 1 lies in the different specific structures of the two sets of vibration elements 200.

[0081] Specifically, as shown in Figures 7 to 10, the orthographic projections of the sound-generating structures of the two sets of vibrating elements 200 on the plane where the support 100 is located do not completely overlap, but partially overlap. Since the sound-generating structures of the two sets of vibrating elements 200 still have overlapping parts, the vibration amplitude of the loudspeaker can be suppressed to a certain extent, thereby reducing the vibration amplitude of the loudspeaker.

[0082] The orthographic projections of the sound-generating structures of the two sets of vibrating elements 200 on the plane where the support 100 is located do not completely overlap. This could be due to differences in the size and / or length of the sound-generating structures of the two sets of vibrating elements 200, etc. This embodiment does not limit this.

[0083] Optionally, as shown in Figures 8 and 9, the lengths of the first sound-emitting structures 210 of the two sets of vibrating elements 200 in the first direction X are different, so that the orthographic projections of the first sound-emitting structures 210 of the two sets of vibrating elements 200 on the plane where the support 100 is located do not completely overlap. By setting the lengths of the first sound-emitting structures 210 of the two sets of vibrating elements 200 in the first direction X differently, the vibration frequency points of the first sound-emitting structures 210 of different layers are staggered, that is, the resonant frequencies of the first sound-emitting structures 210 of different layers are different, making the frequency response curve of the entire loudspeaker flatter and improving the acoustic performance of the loudspeaker.

[0084] For example, the orthographic projection of the first sound-generating structure 210 of a group of vibrating elements 200 on the plane where the support 100 is located is within the orthographic projection of the first sound-generating structure 210 of another group of vibrating elements 200 on the plane where the support 100 is located, so that the cross-sectional area of ​​the first sound-generating structure 210 of the two groups of vibrating elements 200 is larger, further improving the sensitivity of the loudspeaker.

[0085] Similarly, the second sound-generating structures 220 of the two sets of vibrating elements 200 have different lengths in the first direction X, so that the orthographic projections of the second sound-generating structures 220 of the two sets of vibrating elements 200 on the plane where the support 100 is located do not completely overlap. By setting the lengths of the second sound-generating structures 220 of the two sets of vibrating elements 200 in the first direction X differently, the vibration frequency points of the second sound-generating structures 220 of different layers are staggered, that is, the resonant frequencies of the second sound-generating structures 220 of different layers are different, making the frequency response curve of the entire loudspeaker flatter and improving the acoustic performance of the loudspeaker.

[0086] For example, the orthographic projection of the second sound-generating structure 220 of one set of vibrating elements 200 on the plane where the support 100 is located is located within the orthographic projection of the second sound-generating structure 220 of another set of vibrating elements 200 on the plane where the support 100 is located, so that the cross-sectional area of ​​the second sound-generating structure 220 of both sets of vibrating elements 200 is large, further improving the sensitivity of the loudspeaker.

[0087] The other structures in this embodiment are similar to the corresponding structures in Embodiment 1 and have similar beneficial effects, and will not be described in detail here.

[0088] Example 3:

[0089] This embodiment provides an electronic device, including a speaker as described in Embodiment 1 or Embodiment 2. The electronic device provided in this embodiment has good sound quality.

[0090] The electronic device may include mobile phones, tablet personal computers, laptops, personal digital assistants (PDAs), cameras, personal computers, laptops, in-vehicle devices, wearable devices, augmented reality (AR) glasses, AR helmets, virtual reality (VR) glasses, VR helmets, landline handsets (pickups), medical assistive devices (such as hearing aids), and various headphones (such as wireless or wired headphones) with speakers. This application does not impose any special limitations on the specific form of the above-mentioned electronic devices.

[0091] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims. [Simplified Explanation of the Diagram]

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained according to the content of the embodiments of the present invention and these drawings without creative effort.

[0031] Figure 1 is a schematic diagram of the structure of the loudspeaker provided in Embodiment 1 of the present invention;

[0032] Figure 2 is a second structural schematic diagram of the loudspeaker provided in Embodiment 1 of the present invention;

[0033] Figure 3 is an exploded view of the loudspeaker provided in Embodiment 1 of the present invention;

[0034] Figure 4 is a schematic diagram of the support and vibration element provided in Embodiment 1 of the present invention;

[0035] Figure 5 is a top view of the bracket and vibration element provided in Embodiment 1 of the present invention;

[0036] Figure 6 is a cross-sectional view of the loudspeaker provided in Embodiment 1 of the present invention;

[0037] Figure 7 is a structural schematic diagram of the loudspeaker provided in Embodiment 2 of the present invention;

[0038] Figure 8 is a schematic diagram of the bracket and vibration element provided in Embodiment 2 of the present invention;

[0039] Figure 9 is a top view of the bracket and vibration element provided in Embodiment 2 of the present invention;

[0040] Figure 10 is a cross-sectional view of the loudspeaker provided in Embodiment 2 of the present invention.

Claims

1. A loudspeaker, characterized in that it comprises: A support (100) forms a cavity (130) penetrating an upper surface (110) and a lower surface (120); a diaphragm element (300) has its periphery fixedly connected to the support (100); a vibration element (200) is disposed on the side of the diaphragm element (300) facing the support (100), and the vibration element (200) is capable of driving the diaphragm element (300) to vibrate in a third direction (Z); wherein the vibration element (200) includes a plurality of sound-generating structures, and the plurality of sound-generating structures are disposed in the same layer on the support (100); the plurality of sound-generating structures include a first sound-generating structure (210) and a second sound-generating structure (220); The first sound-generating structure (210) includes a first free end (211) and a first fixed end (212) opposite each other in a first direction (X). The first fixed end (212) is connected to one end of the bracket (100), and the first free end (211) is disposed on the side of the diaphragm element (300) facing the cavity (130) and is fixedly connected to the diaphragm element (300). The second sound-generating structure (220) includes a second free end (221) and a second fixed end (222) opposite each other in the first direction (X). The second fixed end (222) is connected to the other end of the bracket (100), and the second free end (221) is disposed on the side of the diaphragm element (300) facing the cavity (130) and is fixedly connected to the diaphragm element (300). The first direction (X) is perpendicular to the third direction (Z). The vibrating element (200) has two sets. One set of the sound-generating structures of the two sets of vibrating elements (200) is connected to the top surface of the bracket (100) and partially disposed above the cavity (130); the other set of the sound-generating structures of the two sets of vibrating elements (200) is connected to the bottom surface of the bracket (100) and partially disposed below the cavity (130); two sets of diaphragm elements (300) are also provided, with each set of diaphragm elements (300) corresponding to one set of vibrating elements (200), and each set of diaphragm elements (300) is disposed on the side of its corresponding vibrating element (200) away from the bracket (100); the lengths of the first sound-generating structures (210) of the two sets of vibrating elements (200) in the first direction (X) are different, and the lengths of the second sound-generating structures (220) of the two sets of vibrating elements (200) in the first direction (X) are different.

2. The loudspeaker according to claim 1, wherein, There is a gap between the first sound-emitting structure (210) and the second sound-emitting structure (220); the orthographic projections of the first sound-emitting structure (210) and the second sound-emitting structure (220) in the second direction (Y) have overlapping portions; any two of the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

3. The loudspeaker according to claim 2, wherein, The first free end (211) and the second free end (221) are alternately arranged in the second direction (Y); or, both the first sound-emitting structure (210) and the second sound-emitting structure (220) are provided in multiples, and at least two second free ends (221) are provided between two adjacent first free ends (211) in the second direction (Y); or, both the first sound-emitting structure (210) and the second sound-emitting structure (220) are provided in multiples, and at least two first free ends (211) are provided between two adjacent second free ends (221) in the second direction (Y).

4. The loudspeaker according to any one of claims 1-3, wherein, The vibration direction of the first sound-generating structure (210) in the third direction (Z) is the same as the vibration direction of the second sound-generating structure (220) in the third direction (Z).

5. The loudspeaker according to any one of claims 1-3, wherein, Both the first free end (211) and the second free end (221) are provided with a transmission member (230). The transmission member (230) is located on the side of the first sound-generating structure (210) and the second sound-generating structure (220) away from the cavity (130). The side of the transmission member (230) away from the first free end (211) and the second free end (221) is connected to the diaphragm element (300).

6. The loudspeaker according to claim 1, wherein, The sound-generating structures of the two sets of vibrating elements (200) have completely overlapped in orthographic projection on the plane of the support (100).

7. The loudspeaker according to claim 1, wherein, The sound-generating structures of the two sets of vibrating elements (200) do not completely overlap on the plane where the support (100) is located.

8. The loudspeaker according to claim 1, wherein, The first sound-generating structures (210) of the two sets of vibrating elements (200) vibrate in opposite directions in the third direction (Z), and the second sound-generating structures (220) of the two sets of vibrating elements (200) vibrate in opposite directions in the third direction (Z), which is perpendicular to the first direction (X).

9. The loudspeaker according to any one of claims 1-3, wherein, The cross-sectional shapes of the multiple sound-generating structures are all the same; and / or, the cross-section of the sound-generating structure is rectangular, trapezoidal, or triangular.

10. An electronic device, characterized in that it includes a speaker as described in any one of claims 1-9.

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