Loudspeaker and electronic equipment

Abstract

The invention discloses a loudspeaker and electronic equipment. The loudspeaker comprises a support, a voice coil, a vibrating diaphragm and a limiting piece. The voice coil is connected with the diaphragm. The limiting piece comprises an elastic part, a fixing part and a connecting part, the fixing part is fixedly connected with the support, and the connecting part is connected with the voice coil. The elastic part is connected with the fixing part and the connecting part and located between the support and the voice coil. Under the condition that the voice coil vibrates along the first direction, the connecting part vibrates along with the voice coil and the vibrating diaphragm along the first direction and drives the elastic part to deform, and the limiting piece limits the voice coil to deviate on a plane perpendicular to or inclined to the first direction. As the voice coil does not deviate, the diaphragm does not have segmentation motion, and therefore, large loudness can be realized, and high distortion can be avoided. Besides, the limiting piece can vibrate along with the voice coil and the vibrating diaphragm in the first direction, and the limiting piece does not block the vibration of the voice coil and the vibrating diaphragm, so that the voice coil and the vibrating diaphragm can realize large amplitude, the loudness of the loudspeaker is further ensured, and the application scene of large loudness is realized.

Description

Technical Field

[0001] The present application relates to the field of acoustic technology, and in particular to loudspeakers and electronic devices. Background Art

[0002] A loudspeaker consists of components such as a voice coil and a diaphragm. Some scenarios require loud sound (for example, open-back headphones). Loudness means the diaphragm vibrates back and forth significantly. Because the diaphragm is very soft and flexible, this large vibration can cause the voice coil to shift, leading to segmented motion of the diaphragm. This means the diaphragm is divided into several sections, some vibrating upwards and some downwards, resulting in reduced loudness. Summary of the Invention

[0003] The purpose of this application is to disclose a speaker and an electronic device to solve the problem of loudness reduction.

[0004] In a first aspect, the present application discloses a loudspeaker. The loudspeaker includes a bracket, a voice coil, a diaphragm, and a stopper, wherein: the voice coil is connected to the diaphragm; the stopper includes an elastic portion, a fixed portion, and a connecting portion; the fixed portion is fixedly connected to the bracket, and the connecting portion is connected to the voice coil; the elastic portion is connected to the fixed portion and the connecting portion, and is located between the bracket and the voice coil; when the voice coil vibrates in a first direction, the connecting portion vibrates along the voice coil and the diaphragm in the first direction and causes the elastic portion to deform, and the stopper restricts the voice coil from deflecting in a plane perpendicular to or inclined to the first direction.

[0005] In some embodiments, the elastic portion is bent.

[0006] In some embodiments, the elastic portion bends back and forth.

[0007] In some embodiments, the elastic portion includes a first elastic portion and a second elastic portion having the same elasticity. With the voice coil as a reference, the first elastic portion and the second elastic portion are arranged opposite to each other.

[0008] In some embodiments, the weight of the connecting portion and the weight of the elastic portion are respectively less than the weight of the fixing portion.

[0009] In some embodiments, along a direction from the connecting portion to the fixing portion, a width of the connecting portion and a width of the elastic portion are respectively smaller than a width of the fixing portion.

[0010] In some embodiments, the limiting member is an FPC.

[0011] In some embodiments, the limiting member is an FPC including a circuit, and the circuit is electrically connected to the voice coil.

[0012] In some embodiments, the voice coil includes a first end and a second end opposite to each other along the first direction, the first end is connected to the diaphragm; and the second end is connected to the limiting member.

[0013] In some embodiments, the voice coil is perpendicular to the limiting member.

[0014] In a second aspect, the present application discloses an electronic device comprising any of the aforementioned speakers.

[0015] In some embodiments, the electronic device comprises open-back headphones.

[0016] In the above-described speaker and electronic device, the limiter restricts the displacement of the voice coil relative to the first direction. Furthermore, since the voice coil is connected to the diaphragm, the voice coil does not deflect, and the diaphragm does not experience segmented movement, thereby achieving high loudness and avoiding high distortion. Furthermore, because the limiter can vibrate with the voice coil and diaphragm in the first direction, it does not block the vibration of the voice coil and diaphragm. As a result, the voice coil and diaphragm can achieve a large amplitude, further ensuring high loudness of the speaker and enabling high-loudness applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a speaker in the related art;

[0018] Figure 2 is a schematic diagram of a first speaker according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a second speaker according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a third type of speaker according to an embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of a position limiting member that can be used with the speaker of the present application. DETAILED DESCRIPTION

[0022] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0023] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" mean two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar words are for convenience only and are not intended to limit to a single position or spatial orientation. The terms "include," "comprising," and similar words mean that the elements or objects preceding the term "include" or "comprising" include the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connected," "connected," and similar words are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0024] See also Figure 1 A speaker in the related art includes a bracket 1, a voice coil 2, a diaphragm 3, a pole core 5 (e.g., soft iron), and a magnet 6. Both the bracket 1 and the pole core 5 contain soft iron. In other embodiments, both the bracket 1 and the pole core 5 may also contain magnets. The bracket 1 with the magnet is sometimes referred to as a magnetic bowl. The voice coil 2 is bonded to the diaphragm 3 and suspended in a gap 60 formed by the pole core 5, the bracket 1, and the magnet 6.

[0025] When the above-mentioned loudspeaker is used in a scene with high loudness, the diaphragm 3 will vibrate back and forth with a large amplitude. Since the diaphragm 3 is very soft and flexible, the large-amplitude vibration will cause the voice coil 2 to shift in the horizontal plane, thereby causing the diaphragm 3 to have a split movement, that is, the diaphragm 3 will be divided into several areas, some of which vibrate upward and some vibrate downward, resulting in a decrease in loudness and an increase in distortion.

[0026] To solve the above problems, the present application adds a limiter 4 to the loudspeaker, which prevents the voice coil from shifting on the aforementioned horizontal plane or the inclined plane inclined to the horizontal plane. The structure of the loudspeaker of the present application is described in detail below.

[0027] See also Figure 2 、 Figure 3 and Figure 4, Figure 2 An internal magnetic speaker is shown. Figure 1 The difference between the loudspeaker shown is that a limiting member 4 is additionally provided. Figure 3 An external magnetic speaker is shown. Figure 4 The above-mentioned internal magnetic speaker, external magnetic speaker and dual magnetic speaker can all adopt conventional structures, and only the limiter 4 is added. The relevant parts (such as the subsequent bracket 1 and the magnet 6) are marked in the figure. Figure 4 In the dual-magnet speaker shown, the magnets include a first magnet 61 and a second magnet 62. Figure 2 、 Figure 3 and Figure 4 It can be learned that a loudspeaker includes a bracket 1, a voice coil 2, a diaphragm 3 and a limiting member 4.

[0028] See also Figure 5 , the limiting member 4 includes an elastic portion 41, a fixing portion 42 and a connecting portion 43. The fixing portion 42 is fixed to the bracket 1. For example, a fixing hole 421 is provided at the opposite end of the fixing portion 42. The limiting member 4 is fixed to the bracket 1 through the fixing hole 421. Based on the function of the aforementioned bracket 1, the bracket 1 is not limited to the bracket including the magnet as long as it can be used to fix the limiting member 4. The connecting portion 43 is connected to the voice coil 2. The elastic portion 41 is connected to the fixing portion 42 and the connecting portion 43, and is located between the bracket 1 and the voice coil 2. The limiting member 4 shown in the figure also includes a protrusion 44, which is also used for positioning the voice coil 2. For example, for a voice coil 2 projected in a runway shape, a protrusion 44 is provided on each side of the voice coil 2. Figure 5 The limiting members shown in FIG. 4 are, of course, the limiting members on each side can be connected as a whole, for example, by the aforementioned protrusions. The structures of the elastic portion 41, the fixing portion 42 and the connecting portion 43 are not limited to Figure 5 The structure shown will suffice as long as it can achieve the functions described later.

[0029] Because the elastic part 41 is provided, when the voice coil 2 vibrates along the first direction, the voice coil 2 drives the connecting part 43 of the limiting member 4 to vibrate along the first direction and drives the elastic part 41 to deform. During the vibration process, the limiting member 4 limits the voice coil 2 from deflecting on a plane perpendicular to or inclined to the first direction. Figure 2 、 Figure 3 and Figure 4In the illustrated embodiment, the first direction is the vertical direction in the drawings, which can also be understood as the vertical direction, as shown in the z-direction. A plane perpendicular to the first direction is a horizontal plane, which limits the front-to-back and left-to-right deviation of the voice coil (in the xy direction). In other cases, the limiter 4 can also limit the deviation of the voice coil 2 on a plane inclined to the first direction, ensuring that the voice coil 2 vibrates only in the z-direction.

[0030] As configured above, the position limiter 4 restricts the voice coil 2 from deflecting in a plane perpendicular or inclined to the first direction. Furthermore, since the voice coil 2 is connected to the diaphragm 3, the voice coil 2 does not deflect and the diaphragm 3 does not experience segmented motion, thereby achieving high loudness and avoiding high distortion. Furthermore, since the position limiter 4 can vibrate along with the voice coil 2 and diaphragm 3 in the first direction, it does not block the vibration of the voice coil 2 and diaphragm 3. As a result, the voice coil and diaphragm can achieve a large amplitude (including by using a voice coil 2 and diaphragm 3 that achieves a large amplitude, or by not reducing the amplitude of the voice coil 2 and diaphragm 3), further ensuring high loudness of the speaker and enabling high-loudness applications.

[0031] See also Figure 5 ,based on Figure 5 The elastic portion 41 shown can provide technical inspiration, and the elastic portion 41 can be bent. There is no limit to how it is bent, as long as it can achieve the functions described later. Figure 5 Although the first elastic portion 411 and the second elastic portion 412 of the elastic portion 41 are shown to be bent, technicians can understand that when there is only one elastic portion 41, a bending design can also be adopted as long as the functions described later can be achieved.

[0032] As configured above, since the elastic portion 41 is in a bent shape, when the voice coil 2 vibrates along the first direction and drives the connecting portion 43 to vibrate along the first direction, the bent elastic portion 41 can provide a stretching margin due to its deformation, and will not block the vibration of the voice coil 2 and the diaphragm 3. Furthermore, it ensures that the vibration amplitude of the voice coil 2 and the diaphragm 3 is large, avoids a reduction in the loudness of the speaker and high distortion, and is suitable for application scenarios with high loudness.

[0033] See also Figure 5 , the elastic portion 41 is bent back and forth. In the figure, the elastic portion 41 is bent back and forth once, and is U-shaped. Of course, for Figure 5 The U-shape shown can also be considered as an S-shape when viewed in conjunction with the connection between the elastic portion 41 and the connection portion 43 and the fixing portion 42. In other embodiments, the elastic portion 41 can also be bent back and forth multiple times, such as into an S-shape.

[0034] As set up above, since the elastic portion 41 bends back and forth, it can better provide stretching margin, will not limit the amplitude of the voice coil 2 and the diaphragm 3, and can limit the deviation of the voice coil 2 on a plane perpendicular to or inclined to the first direction, which can better achieve high loudness and avoid high distortion.

[0035] Regarding the elastic portion 41, the number of the elastic portion 41 is not limited, as long as it can achieve the above-mentioned function. Figure 5 In the embodiment of the present application, the elastic portion 41 includes a first elastic portion 411 and a second elastic portion 412. The first elastic portion 411 and the second elastic portion 412 have the same elasticity, and the same elasticity includes: 1) the first elastic portion 411 and the second elastic portion 412 have different structures but the same elasticity; 2) it can be as follows Figure 5 As shown, the first elastic portion 411 and the second elastic portion 412 have the same structure and elasticity. With the voice coil 2 as a reference, the first elastic portion 411 and the second elastic portion 412 are symmetrically arranged. The main purpose of this symmetrical arrangement is to provide the first elastic portion 411 and the second elastic portion 412 with the same stretch margin, thereby achieving the function described below. This symmetrical arrangement can be understood as the axis of symmetry of the first elastic portion 411 and the second elastic portion 412 perpendicularly intersecting the axis of the voice coil 2 in the first direction. For example, if the projection of the voice coil 2 is in the shape of a runway, the axis of symmetry can be considered to be the extension of a line connecting the midpoints of opposite sides of the runway.

[0036] See also Figure 5 The fixing portion 42, the first elastic portion 411, the connecting portion 43 and the second elastic portion 412 are connected end to end in sequence to form a ring. At this time, the first elastic portion 411 and the second elastic portion 412 are symmetrical. However, in other embodiments, the limiting member 4 may not be a ring. For example, the fixing portion 42 is disconnected as shown in the figure. In this case, the first elastic portion 411 and the second elastic portion 412 may also be symmetrically arranged.

[0037] As set up above, since the elastic portion 41 includes a first elastic portion 411 and a second elastic portion 412 having the same elasticity, and the first elastic portion 411 and the second elastic portion 412 are symmetrically arranged relative to the voice coil 2, when the voice coil 2 drives the connecting portion 43 of the limiter 4 to vibrate together, the voice coil 2 will not tilt (for example, the side of the voice coil 2 corresponding to the first elastic portion 411 will not be higher than the other side of the voice coil 2 corresponding to the second elastic portion 412, so that the two sides are at the same height). If tilting occurs, it will also cause splitting movement. Therefore, the above-mentioned setting can ensure high loudness and avoid high distortion.

[0038] See also Figure 5, the fixed portion 42, the first elastic portion 411, the connecting portion 43 and the second elastic portion 412 are connected end to end in sequence to form a ring. The weight of the connecting portion 43 and the weight of the elastic portion 41 are respectively less than the weight of the fixed portion 42. In some embodiments, it is also less than the weight of the protruding portion 44. In some other embodiments, when the fixed portion 42, the elastic portion 41 (the first elastic portion 411 and the second elastic portion 412) and the connecting portion 43 do not form a ring, for example, it can also be understood that the elastic portion 41 is one, and the weight of the connecting portion 43 and the weight of the elastic portion 41 can also be made smaller than the weight of the fixed portion 42. In short, it is sufficient to achieve the subsequent effects.

[0039] As configured above, since the weight of the connecting portion 43 and the weight of the elastic portion 41 are respectively smaller than the weight of the fixing portion 42, the voice coil 2 can more easily drive the connecting portion 43 of the limiting member 4 to vibrate in the first direction and drive the elastic portion 41 to deform, thereby ultimately ensuring that the voice coil 2 can make the vibration amplitude of the diaphragm 3 larger, thereby ensuring high loudness and avoiding high distortion.

[0040] See also Figure 5 , along the direction from the connecting portion 43 to the fixing portion 42 , the width of the connecting portion 43 and the width of the elastic portion 41 are respectively smaller than the width of the fixing portion 42 .

[0041] As described above, since the width of the connecting portion 43 and the width of the elastic portion 41 are respectively smaller than the width of the fixing portion 42, it is more convenient to achieve the light weight, and it is also beneficial to achieve the aforementioned stretching margin, and further, better achieve limiting the displacement of the voice coil 2 on a plane perpendicular to or inclined to the first direction.

[0042] In some embodiments, the position-limiting member 4 is an FPC. In this case, the FPC does not include a circuit.

[0043] As set above, when the limiter 4 is an FPC, the FPC is soft, which can ensure that the limiter 4 vibrates in the first direction and will not bend in a plane perpendicular to or inclined to the first direction, thereby better ensuring that the voice coil 2 does not deviate in the second direction, thereby ensuring high loudness and avoiding high distortion.

[0044] In a further embodiment, the limiting member 4 is an FPC including a circuit, and the circuit is connected to the voice coil 2 .

[0045] As described above, the circuit is set on the FPC, and this FPC also serves as the limiter 4. In this way, the limiter 4 realizes the functions of limiting and providing signals to the voice coil 2, which is equivalent to integrating multiple functions into one component. Furthermore, while ensuring the high loudness and avoiding high distortion, it is beneficial to the simple structure and low cost of the speaker.

[0046] See also Figure 2 The voice coil 2 includes a first end 21 and a second end 22 opposite to each other along the first direction. The first end 21 is connected to the diaphragm 3; the second end 22 is connected to the limiter 4.

[0047] As configured above, after the first end 21 is connected to the diaphragm 3, the diaphragm 3 has a limiting effect on the voice coil 2. Combined with the limiting effect of the limiting member 4 on the plane perpendicular or inclined to the first direction, the voice coil 2 is prevented from swinging. In this way, it can be ensured that the voice coil 2 vibrates in the first direction without deviating on the plane, thereby ensuring high loudness and avoiding high distortion.

[0048] See also Figure 2 、 Figure 3 and Figure 4 Combined with Figure 5 , the voice coil 2 is perpendicular to the limiting member 4, for example, Figure 2 、 Figure 3 and Figure 4 In the embodiment, the voice coil 2 is placed in a first direction (vertically placed) and vibrates in the first direction. The limiter 4 is located in a horizontal plane. In the embodiment of the limiter 4, Figure 5 The limiting member 4 shown can be considered as a hollow plate. In other embodiments, the limiting member 4 may not be a hollow plate.

[0049] As set up above, compared with the limiter 4 being inclined to the first direction (it can also be considered that the limiter 4 is inclined to the horizontal plane), since the voice coil 2 is perpendicular to the limiter 4, if the first direction is the z direction, the limiter 4 can more conveniently limit the displacement of the voice coil 2 in the horizontal plane, thereby ensuring that the vibration amplitude of the diaphragm 3 achieves a large loudness and avoids high distortion.

[0050] In a second aspect, the present application discloses an electronic device. The electronic device includes any of the aforementioned speakers. There are no restrictions on how the speaker and other components constitute the electronic device. The electronic device is not limited to headphones.

[0051] In some embodiments, the electronic device is an open-back headphone. However, in other embodiments, the electronic device may also be a circumaural headphone, a supra-aural headphone, an earbud headphone, or an in-ear headphone. In the case where the electronic device is an open-back headphone, because open-back heads may leak during use, the open-back heads must produce louder sound to meet the normal needs of the user. The speaker of the present application can better meet this need.

[0052] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A loudspeaker, characterized in that: The loudspeaker comprises a bracket, a voice coil, a diaphragm and a limiting member, wherein: The voice coil is connected to the diaphragm; the limiting member includes an elastic portion, a fixed portion and a connecting portion, the fixed portion is fixedly connected to the bracket, and the connecting portion is connected to the voice coil; the elastic portion is connected to the fixed portion and the connecting portion, and is located between the bracket and the voice coil; When the voice coil vibrates along a first direction, the connecting portion vibrates along the first direction with the voice coil and the diaphragm and drives the elastic portion to deform, and the limiting member limits the voice coil from deflecting on a plane perpendicular to or inclined to the first direction.

2. The loudspeaker according to claim 1, wherein The elastic portion is bent.

3. The loudspeaker according to claim 2, characterized in that The elastic portion bends back and forth.

4. The loudspeaker according to any one of claims 1 to 3, characterized in that The elastic portion includes a first elastic portion and a second elastic portion having the same elasticity; with the voice coil as a reference, the first elastic portion and the second elastic portion are symmetrically arranged.

5. The loudspeaker according to any one of claims 1 to 3, characterized in that The weight of the connecting portion and the weight of the elastic portion are respectively smaller than the weight of the fixing portion.

6. The loudspeaker according to claim 5, characterized in that Along a direction from the connecting portion to the fixing portion, a width of the connecting portion and a width of the elastic portion are respectively smaller than a width of the fixing portion.

7. The loudspeaker according to claim 1, wherein The limiting component is an FPC.

8. The loudspeaker according to claim 7, characterized in that The limiting component is an FPC including a circuit, and the circuit is electrically connected to the voice coil.

9. The loudspeaker according to claim 1, wherein The voice coil includes a first end and a second end opposite to each other along the first direction, the first end is connected to the diaphragm; and the second end is connected to the limiting member.

10. The loudspeaker according to claim 1 or 9, characterized in that The voice coil is perpendicular to the limiting component.

11. An electronic device, characterized in that: The electronic device comprises the speaker according to any one of claims 1 to 10.

12. The electronic device according to claim 11, wherein: The electronic device includes open-ear headphones.

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