Patent ID: 12212924

DESCRIPTION OF REFERENCE NUMERALS

10: Speaker core;20: Speaker;100: Basin frame;200: Diaphragm;300: Box;400: Sealing layer;110: Vibration space;120: Diaphragm frame;210: Diaphragm mass;220: Diaphragm folded ring;310: Core space;320: Protruding portion;121: Limiting portion;221: Arc-shaped portion;222: First connecting portion;223: Second connecting portion; and2211: First bent part;2212: Second bent part;2213: Third bent part;2221: Buckle.

DESCRIPTION OF EMBODIMENTS

Terms used in implementations of this application are only used to explain specific embodiments of this application, but are not intended to limit this application.

It is well known that in addition to increasing an amplitude to improve low-frequency performance of a speaker, increasing a vibration area is also an important way to improve the low-frequency performance of the speaker.

A speaker core usually includes components such as a basin frame, a diaphragm, a voice coil, and a magnetic circuit. This application does not relate to a voice coil part or a magnetic circuit part, and therefore no related content is presented in the text or the accompanying drawings. There is a ring-shaped diaphragm frame at a top of the basin frame, and an edge of the diaphragm is bonded to the diaphragm frame. The diaphragm includes a diaphragm mass and a diaphragm folded ring connected to a periphery of the diaphragm mass. The diaphragm folded ring includes a bent arc-shaped part, and the arc-shaped part is configured to drive the diaphragm mass to vibrate in a height direction of the basin frame.

In a conventional technology, to increase a sound pressure level of the speaker, a size of the diaphragm mass in a horizontal direction is usually increased to increase a vibration area of the speaker. However, a horizontal size of the speaker core is limited. Especially when the speaker is a micro speaker and a horizontal size of the diaphragm mass is excessively large, a horizontal size of the diaphragm folded ring located at the periphery of the diaphragm mass is reduced, and consequently a horizontal size (namely, a width) of the arc-shaped part of the diaphragm folded ring is reduced.

However, when the arc-shaped part of the diaphragm folded ring has an excessively small width, a nonlinear problem between driving force of the speaker and an amplitude of the diaphragm is aggravated. Specifically, when the amplitude of the diaphragm of the speaker is large, a stiffness coefficient (Kms) of the diaphragm folded ring increases with the amplitude (displacement of the diaphragm in a vibration direction). Therefore, the driving force F (F=Kms.x, where x is the amplitude) required by the speaker at the large amplitude is increased. A power amplifier for driving the speaker has a limited output capability, in other words, the driving force F of the speaker is limited, and therefore increase of the amplitude is limited. A low-frequency signal has relatively low vibration frequency and a relatively large amplitude. When the amplitude of the diaphragm is greater than the amplitude of the low-frequency signal, the diaphragm can accurately restore the low-frequency signal. However, when the amplitude of the diaphragm is less than the amplitude of the low-frequency signal, the diaphragm of the speaker cannot accurately restore the amplitude of the low-frequency signal, and consequently the speaker cannot accurately restore a low-frequency sound. Therefore, when increase of the amplitude of the diaphragm is limited, some low-frequency signals cannot be accurately restored, which degrades the low-frequency performance of the speaker.

In a speaker core provided in embodiments of this application, a position of a diaphragm folded ring is changed. For example, in embodiments of this application, an arc-shaped portion of the diaphragm folded ring is disposed above a diaphragm frame, so that the arc-shaped portion of the diaphragm folded ring fully uses thickness space of the diaphragm frame. In this way, when a width of the arc-shaped portion of the diaphragm folded ring is ensured, an area of a diaphragm mass can be increased, to increase a sound pressure level of a speaker in a full frequency band range. In addition, when a vibration area is increased, a case in which a nonlinear problem is aggravated due to an excessively small width of the arc-shaped portion of the diaphragm folded ring is avoided.

Specific structures of the speaker core, a speaker, and an electronic device in embodiments of this application are described below in detail.

FIG.1is a schematic diagram of a structure of a speaker core according to an embodiment of this application. Refer toFIG.1. An embodiment of this application provides a speaker core10, including a basin frame100and a diaphragm200. There is a diaphragm frame120at a top of the basin frame100. The diaphragm frame120is of a ring-shaped structure, and the diaphragm frame120encloses vibration space110of the diaphragm200.

The basin frame100may be integrally formed through injection molding. For example, a mounting groove may be disposed at the top of the basin frame100, the mounting groove is used as the vibration space110, and a ring-shaped groove wall around the mounting groove is used as the diaphragm frame120.

For another example, the basin frame100may include a basin frame base and a diaphragm frame120disposed around a top of the basin frame base. The ring-shaped diaphragm frame120may be formed by welding a metal ribbon. The inside of the ring-shaped diaphragm frame120is vibration space110. A manner of manufacturing the diaphragm frame120is not specifically limited in this embodiment of this application.

FIG.2is a top view of a structure of the speaker core according to an embodiment of this application, andFIG.3is a schematic diagram of an internal structure ofFIG.2. Refer toFIG.1toFIG.3. The diaphragm200in this embodiment of this application covers the top of the basin frame100. In this way, the diaphragm200is located on an opening part of the diaphragm frame120, and may freely vibrate up and down in the inside, namely, the vibration space110, and the outside of the diaphragm frame120.

FIG.4is a cutaway drawing ofFIG.3. Refer toFIG.2toFIG.4. Specifically, the diaphragm200in this embodiment of this application includes a diaphragm mass210and a diaphragm folded ring220. The diaphragm mass210is located in a central region of a top opening of the vibration space110, and the diaphragm mass210may vibrate up and down in a height direction (namely, a z-axis direction inFIG.4) of the basin frame100at the top opening of the vibration space110. The diaphragm folded ring220is disposed around an outer edge of the diaphragm mass210, that is, an inner edge of the diaphragm folded ring220is disposed on the outer edge of the diaphragm mass210, and an outer edge of the diaphragm folded ring220is connected to an outer sidewall of the diaphragm frame120.

The height direction of the basin frame100is a direction indicated by a z-axis inFIG.4.

Refer toFIG.4. In actual application, the diaphragm folded ring220includes an arc-shaped portion221disposed to be bent, and the arc-shaped portion221is disposed around the outer edge of the diaphragm mass210. There may be an equal curvature radius at any position on a surface of the arc-shaped portion221. For example, the arc-shaped portion221is of a circular arc structure.

In this embodiment of this application, the arc-shaped portion221of the diaphragm folded ring220vibrates, to drive the diaphragm mass210to vibrate up and down in the height direction of the basin frame100, and prevent the diaphragm mass210from moving in a horizontal direction.

The horizontal direction of the basin frame100is a direction perpendicular to the height direction (the z-axis direction inFIG.4) of the basin frame100, for example, may be an x-axis direction inFIG.3or a y-axis direction inFIG.3.

In this embodiment of this application, at least a part of the arc-shaped portion221of the diaphragm folded ring220is located above the diaphragm frame120. For example, refer toFIG.4. The arc-shaped portion221of the diaphragm folded ring220is partially located above the diaphragm frame120. Alternatively, in some other examples, the arc-shaped portion221of the diaphragm folded ring220is completely located above the diaphragm frame120. That the arc-shaped portion221is located above the diaphragm frame120means that the arc-shaped portion221is directly above a top end face of the diaphragm frame120in the z-axis direction inFIG.4. When at least a part of the arc-shaped portion221is located above the diaphragm frame120, the at least a part of the arc-shaped portion221is suspended above the diaphragm frame120, that is, the at least a part of the arc-shaped portion221is not in contact with or does not touch a top of the diaphragm frame120during vibration.

When the arc-shaped portion221of the diaphragm folded ring220is completely located above the diaphragm frame120, the arc-shaped portion221of the diaphragm folded ring220is completely moved above the diaphragm frame120, in other words, the entire arc-shaped portion221is moved above the diaphragm frame120. In this case, a horizontal size of the top opening of the vibration space110is not occupied. In this way, when the basin frame100has a specific horizontal size, the outer edge of the diaphragm mass210may be extended to an inner sidewall of the diaphragm frame120. Therefore, an area of the diaphragm mass210is increased, and it is ensured that the arc-shaped portion221of the diaphragm folded ring220is not affected by a size, to avoid a case in which a nonlinear problem between driving force of a speaker and an amplitude of the diaphragm is aggravated due to an excessively small width of the arc-shaped portion221of the diaphragm folded ring220.

Refer toFIG.5. It should be noted that when the arc-shaped portion221of the diaphragm folded ring220is partially located above the diaphragm frame120, the width L of the arc-shaped portion221of the diaphragm folded ring220is greater than a thickness b of the diaphragm frame120. When the arc-shaped portion221of the diaphragm folded ring220is completely located above the diaphragm frame120, the width L (refer toFIG.5) of the arc-shaped portion221of the diaphragm folded ring220is less than or equal to a thickness b of the diaphragm frame120, to ensure that the entire arc-shaped portion221is located above the diaphragm frame120.

The thickness b of the diaphragm frame120is specifically a thickness of the top (namely, an end that is of the diaphragm frame120and that is far away from the basin frame100in the z-axis direction inFIG.5) of the diaphragm frame120.

In this embodiment of this application, the width L of the arc-shaped portion221of the diaphragm folded ring220is greater than or equal to 0.5 mm and less than or equal to 2 mm. For example, the width L of the arc-shaped portion221may be a proper value such as 0.5 mm, 0.7 mm, 1 mm, 1.5 mm, or 2 mm. In this way, it may be ensured that the arc-shaped portion221of the diaphragm folded ring220does not have an excessively small width L, to avoid a case, for the speaker core10, in which the nonlinear problem between the driving force of the speaker and the amplitude of the diaphragm is aggravated due to an excessively small width of the arc-shaped portion221of the diaphragm folded ring220. Therefore, in this embodiment of this application, the width L of the arc-shaped portion221of the diaphragm folded ring220is greater than or equal to 0.5 mm and less than or equal to 2 mm, to increase a maximum value of an amplitude of the speaker20.

Refer toFIG.5. The width L of the arc-shaped portion221refers to a distance between an end that is of the arc-shaped portion221and that is close to the diaphragm mass210and an end that is far away from the diaphragm mass210.

In this embodiment of this application, when the arc-shaped portion221of the diaphragm folded ring220is partially located above the diaphragm frame120, for example, refer toFIG.5, when ⅓L of the arc-shaped portion221of the diaphragm folded ring220may be disposed above the diaphragm frame120, the outer edge of the diaphragm mass210may be extended by ⅓L in a direction of the diaphragm frame120. In this way, when it is ensured that a width size of the arc-shaped portion221is not reduced, the area of the diaphragm mass210is increased, and when the area of the diaphragm mass210is increased, a vibration area of the speaker is increased, to increase a sound pressure level of the speaker.

In some examples, when the arc-shaped portion221of the diaphragm folded ring220is partially located above the diaphragm frame120, an orthographic projection of the arc-shaped portion221of the diaphragm folded ring220on the diaphragm frame120may completely cover the top end face of the diaphragm frame120. For example, refer toFIG.5. When the arc-shaped portion221is projected in a negative direction of the z-axis, a part of the projection completely covers the top end face of the diaphragm frame120, a part of the projection is located on the inner sidewall of the diaphragm frame120, and a part of the projection is located on a part of the top opening of the vibration space110.

In another example, when the arc-shaped portion221of the diaphragm folded ring220is completely located above the diaphragm frame120, an orthographic projection of the arc-shaped portion221of the diaphragm folded ring220on the diaphragm frame120may partially or completely cover a top face of the diaphragm frame120.

In this embodiment of this application, at least a part of the arc-shaped portion221of the diaphragm folded ring220is disposed above the diaphragm frame120, so that the arc-shaped portion221of the diaphragm folded ring220fully uses thickness space of the diaphragm frame120of the basin frame100. In this way, when the width of the arc-shaped portion221of the diaphragm folded ring220is ensured, a horizontal size of the diaphragm mass210located on the inner edge of the diaphragm folded ring220can be increased. Therefore, an effective vibration area is increased, to increase a sound pressure level of the speaker20in a full frequency band range. In addition, the nonlinear problem between the driving force of the speaker and the amplitude of the diaphragm is aggravated due to an excessively small width of the arc-shaped portion221of the diaphragm folded ring220is avoided, to ensure that increase of the amplitude of the speaker20is not inhibited.

It may be learned from a simulation experiment that for the speaker core10in this embodiment of this application, the vibration area is increased, to increase the sound pressure level in the full frequency band range. A speaker20with a size of 12 mm*16 mm is used as an example. For the speaker core10in this embodiment of this application, the vibration area of the speaker core10can be increased by 11%, and the corresponding sound pressure level in the full frequency band range is increased by 0.9 dB.

Refer toFIG.5. During specific implementation of this embodiment of this application, the part that is of the arc-shaped portion221and that is located above the diaphragm frame120may be bent in a direction far away from the diaphragm frame120.

In this way, the arc-shaped portion221above the diaphragm frame120can be prevented from colliding with the diaphragm frame120in a process of vibrating up and down, to ensure that the amplitude of the diaphragm200is not interfered with by the diaphragm frame120.

In addition, the part that is of the arc-shaped portion221and that is located above the diaphragm frame120is bent in the direction far away from the diaphragm frame120, to facilitate assembly between the diaphragm folded ring220and the basin frame100.

Refer toFIG.5. In some examples, when at least a part of the arc-shaped portion221is suspended above the diaphragm frame120, a gap e between the part that is of the arc-shaped portion221and that is located above the diaphragm frame120and the top surface of the diaphragm frame120is greater than or equal to 0.3 mm, to facilitate assembly between the arc-shaped portion221and the basin frame100. In addition, the gap is set in the foregoing range, to ensure that the arc-shaped portion221stably vibrates, and is not interfered with by the diaphragm frame120.

It should be noted that the gap e is a maximum gap that is between the arc-shaped portion221and the top surface of the diaphragm frame120and that exists when the arc-shaped portion221is bent in the direction far away from the diaphragm frame120. In addition, the gap e refers to a distance between a side that is of the arc-shaped portion221and that faces the top surface of the diaphragm frame120and the top surface of the diaphragm frame120.

For example, the gap e between the part that is of the arc-shaped portion221and that is located above the diaphragm frame120and the top surface of the diaphragm frame120may be a proper value such as 0.3 mm, 0.4 mm, 0.5 mm, or 0.6 mm. It may be understood that the gap may be specifically adjusted based on a height of the speaker20and a performance requirement of the speaker20.

In an implementation, the arc-shaped portion221of the diaphragm folded ring220may be bent once in a direction perpendicular to a z-axis direction inFIG.3. For example, the entire arc-shaped portion221is of a circular arc structure bent in the direction far away from the diaphragm frame120. In this way, a structure of the diaphragm folded ring220is simplified, to improve manufacturing efficiency of the speaker core10.

In another implementation, the arc-shaped portion221of the diaphragm folded ring220may further include a plurality of bent parts, and the plurality of bent parts may be horizontally bent for a plurality of times in an x-axis direction inFIG.5.

Two adjacent bent parts are bent in different directions. For example, a bent part is of a circular arc structure bent in the direction far away from the diaphragm frame120, for example, the bent part may be an arc-shaped convex surface, and a bent part adjacent to the bent part is of a circular arc structure bent in a direction close to the diaphragm frame120, for example, the another adjacent bent part may be an arc-shaped concave surface.

When the arc-shaped portion221includes a plurality of bent parts, at least one bent part may be suspended above the top of the diaphragm frame120. For example, one bent part may be moved and suspended above the top of the diaphragm frame120, or two bent parts may be moved and suspended above the top of the diaphragm frame120.

In this embodiment of this application, the arc-shaped portion221is disposed to include the plurality of bent parts, and it is set that two adjacent bent parts are bent in different directions. In this way, when it is ensured that there is a specific overall width of the arc-shaped portion221, an arc length of the arc-shaped portion221is increased, so that in a large-amplitude vibration process of the diaphragm mass210, the arc-shaped portion221of the diaphragm folded ring220is not pulled by the diaphragm mass210in a radial direction, to improve reliability of the diaphragm folded ring220in a large-amplitude application scenario.

Still refer toFIG.5. For example, the arc-shaped portion221of the diaphragm folded ring220includes a first bent part2211and a second bent part2212that are sequentially and circumferentially disposed. The second bent part2212is located between the first bent part2211and the diaphragm mass210. That is, an inner edge of the second bent part2212of the arc-shaped portion221is connected to the outer edge of the diaphragm mass210, and an outer edge of the second bent part2212is connected to an inner edge of the first bent part2211.

The first bent part2211is suspended above the top of the diaphragm frame120, to dispose the arc-shaped portion221by using the thickness space of the diaphragm frame120. In this way, when the area of the diaphragm mass210is increased, the width size of the arc-shaped portion221of the diaphragm folded ring220is ensured.

It should be noted that when the first bent part2211is suspended above the top of the diaphragm frame120, a region of the first bent part2211may be completely suspended above the top of the diaphragm frame120, or a region of the first bent part2211may be partially suspended above the top of the diaphragm frame120.

In addition, the first bent part2211is bent in the direction far away from the diaphragm frame120, and the second bent part2212is bent towards the vibration space110. In this way, the first bent part2211is prevented from colliding with the diaphragm frame120in a process of vibrating up and down, and the first bent part2211and the second bent part2212are bent in different directions, to increase the arc length of the arc-shaped portion221, so as to improve reliability of the diaphragm folded ring220in a large-amplitude application scenario.

In specific disposing, bending radians of the first bent part2211and the second bent part2212may be equal, and widths of the first bent part2211and the second bent part2212are equal. In this way, the first bent part2211and the second bent part2212of the arc-shaped portion221form a central symmetric structure, so that when the diaphragm folded ring220vibrates, a Kms curve corresponding to the first bent part2211and a Kms curve corresponding to the second bent part2212are symmetric, to reduce distortion of the speaker20, in other words, to avoid a case in which there is excessive distortion of the speaker20in this embodiment of this application.

For another example, the arc-shaped portion221of the diaphragm folded ring220may further include a third bent part2213(refer toFIG.4) disposed between the second bent part2212and the diaphragm mass210. In other words, the third bent part2213is disposed at an end (namely, the inner edge of the second bent part2212) that is of the second bent part2212and that is far away from the first bent part2211. The third bent part2213is bent in a direction opposite to a direction in which the second bent part2212is bent. For example, when the second bent part2212is bent towards the inside of the vibration space110, the third bent part2213is bent towards the outside of the vibration space110, to further increase the arc length of the arc-shaped portion221, so as to improve reliability of the diaphragm folded ring220in a large-amplitude application scenario.

Refer toFIG.5. In the speaker core10in this embodiment of this application, the diaphragm folded ring220may include a first connecting portion222and a second connecting portion223. The first connecting portion222and the second connecting portion223are respectively connected to an outer edge and an inner edge of the arc-shaped portion221. For example, the first connecting portion222is connected to the outer edge (an end far away from the diaphragm mass210) of the arc-shaped portion221, and the second connecting portion223is connected to the inner edge (an end close to the diaphragm mass210) of the arc-shaped portion221.

In specific assembly, the first connecting portion222of the diaphragm folded ring220may be connected to the outer sidewall of the diaphragm frame120, and the second connecting portion223may be connected to a surface of the diaphragm mass210. The second connecting portion223may be connected to an outer surface of the diaphragm mass210, or the second connecting portion223may be connected to an inner surface of the diaphragm mass210.

It should be noted that the outer surface of the diaphragm mass210is a surface that is of the diaphragm mass210and that faces the outside of the vibration space110, and the inner surface of the diaphragm mass210is a surface that is of the diaphragm mass210and that faces the inside of the vibration space110.

The first connecting portion222and the outer sidewall of the diaphragm frame120, and the second connecting portion223and the diaphragm mass210may be connected through bonding by using an adhesive layer, through clamping or welding, or by using a fastener.

In this embodiment of this application, the first connecting portion222is connected to the outer sidewall of the diaphragm frame120, and the second connecting portion223is connected to the diaphragm mass210. In this way, connection strength between the diaphragm folded ring220and each of the basin frame100and the diaphragm mass210is improved, to improve structural stability of the diaphragm folded ring220at the top of the basin frame100, and stability of the diaphragm mass210at the top opening of the vibration space110is correspondingly improved, to ensure stable vibration of the diaphragm200at the top of the basin frame100.

In an optional implementation, the first connecting portion222is detachably connected to the outer sidewall of the diaphragm frame120, and correspondingly, the second connecting portion223is detachably connected to the surface of the diaphragm mass210. In this embodiment of this application, the detachable connection includes but is not limited to clamping, bonding, or a fastening connection established by using a fastener. For example, the first connecting portion222may be bonded to the outer sidewall of the diaphragm frame120by using an adhesive layer. Similarly, the second connecting portion223may be bonded to the surface of the diaphragm mass210by using an adhesive layer.

In this embodiment of this application, the first connecting portion222and the second connecting portion223are respectively connected to the diaphragm frame120and the diaphragm mass210through bonding. In this way, connection strength between the first connecting portion222and the diaphragm frame120and connection strength between the second bent part2212and the diaphragm mass210are ensured, and a connection structure between the diaphragm folded ring220and each of the diaphragm frame120and the diaphragm mass210is simplified, to improve manufacturing efficiency of the speaker core10.

For another example, the first connecting portion222is connected to the outer sidewall of the diaphragm frame120through clamping. Specifically, a buckle2221(refer toFIG.4) may be disposed on a surface that is of the first connecting portion222and that faces the outer sidewall of the diaphragm frame120, and a clamping groove that matches the buckle2221is formed on the outer sidewall of the diaphragm frame120. The buckle2221is clamped in the clamping groove.

In this embodiment of this application, the first connecting portion222is connected to the outer sidewall of the diaphragm frame120by using the buckle2221, to limit movement of the first connecting portion222in a z-axis direction of the diaphragm frame120, so as to further improve structural stability of the first connecting portion222on the diaphragm frame120.

In addition, the buckle2221on the first connecting portion222is clamped in the clamping groove of the diaphragm frame120, to increase a connection area between the first connecting portion222and the diaphragm frame120, so as to further improve connection strength between the first connecting portion222and the outer sidewall of the diaphragm frame120.

In specific implementation, the buckle2221in this embodiment of this application may include a large end and a small end. The small end is connected to the first connecting portion222, and the large end is located in the clamping groove. For example, an outer contour size of the buckle2221gradually increases in a groove depth direction of the clamping groove. Correspondingly, a size of the clamping groove located on the outer sidewall of the diaphragm frame120matches the outer contour size of the buckle2221, that is, the size of the clamping groove gradually increases from a groove opening to a groove bottom. For example, a cross section of the buckle2221is in a trapezoidal shape (refer to inFIG.4).

In this embodiment of this application, the buckle2221is disposed to include the large end and the small end, the small end is disposed on the first connecting portion222, and the large end is far away from the first connecting portion222and clamped in the clamping groove. In this case, a contact area between the buckle2221and an inner wall of the clamping groove gradually increases in a direction from the groove opening of the clamping groove to the groove bottom of the clamping groove. In this way, the buckle2221limits the movement of the first connecting portion222in the height direction of the diaphragm frame120, and difficulty of going out of the clamping groove by the buckle2221is increased, in other words, it is ensured that it is not easy for the buckle2221to go out of the clamping groove, to improve connection stability between the first connecting portion222and the diaphragm frame120.

It should be noted that the groove bottom of the clamping groove refers to a groove wall that is of the clamping groove and that faces the groove opening.

It should be noted that the small end of the buckle2221is specifically an end with a relatively small size in the buckle2221, and the large end of the buckle2221is specifically an end with a relatively large size in the buckle2221.

In some examples, a protrusion (not shown in the figure) may extend on a sidewall of the buckle2221, and a groove matching the protrusion is formed on the groove wall of the clamping groove. The buckle2221is clamped in the clamping groove, and the protrusion is extended into the groove, so that the buckle2221is stably clamped in the clamping groove, to improve the connection stability between the first connecting portion222and the diaphragm frame120.

In this embodiment of this application, when the second connecting portion223is connected to the diaphragm mass210, the second connecting portion223may be clamped on the diaphragm mass210. For example, a buckle2221may be disposed on a side that is of the second connecting portion223and that faces the outer surface of the diaphragm mass210, a clamping groove matching the buckle2221is formed on the outer surface of the diaphragm mass210, and the buckle2221is clamped in the clamping groove, to stably connect the second connecting portion223to the diaphragm mass210.

In another optional implementation, the diaphragm folded ring220, the basin frame100, and the diaphragm mass210may be disposed as an integrally formed part. For example, the second connecting portion223of the diaphragm folded ring220and the diaphragm mass210are integrally formed through injection molding, and the first connecting portion223of the diaphragm folded ring220and the basin frame100are integrally formed through injection molding, to improve the connection strength between the diaphragm folded ring220and the basin frame100and between the diaphragm folded ring220and the diaphragm mass210.

It may be understood that when the diaphragm folded ring220and the basin frame100are integrally formed as an integral part through injection molding, a clamping groove may be disposed on the outer sidewall of the diaphragm frame120of the basin frame100, and a buckle2221is disposed on the first connecting portion222of the diaphragm folded ring220. During injection molding, the buckle2221is extended into the clamping groove, to increase a contact area between the first connecting portion222and the diaphragm frame120, so as to improve the connection stability between the first connecting portion222and the diaphragm frame120.

For a manner of disposing the clamping groove and the buckle2221, refer to the content indicating that the first connecting portion222is clamped on the diaphragm frame120. Details are not described herein.

FIG.6is a schematic diagram of a structure of a speaker from a first angle of view according to an embodiment of this application,FIG.7is a schematic diagram of a structure of a speaker from a second angle of view according to an embodiment of this application, andFIG.8is a top view ofFIG.6. Refer toFIG.6toFIG.8. In actual application, when the speaker core10is assembled into a box300of the speaker20, it needs to be ensured that a height of the speaker core10in the box300is a preset height, to ensure a preset distance between an outer surface of the diaphragm200on the speaker core10and an inner top wall of the box300. At this preset distance, the diaphragm200on the speaker core10can effectively vibrate, to propagate a sound with specific intensity and a specific tone from a top of the box300to the outside of the box300.

Still refer toFIG.7andFIG.8. In actual application, a protruding portion320extends on an inner wall of the box300of the speaker20. Therefore, in this embodiment of this application, a limiting portion121(refer toFIG.1) may be disposed on the diaphragm frame120. When the speaker core10is mounted into the box300of the speaker20, the limiting portion121is configured to fit with the protruding portion320on the inner wall of the box300, to limit the height of the speaker core10in the box300, in other words, limit a position of the speaker core10in a z-axis direction (refer toFIG.6).

In this embodiment of this application, the limiting portion121is disposed on the diaphragm frame120, so that the limiting portion121fits with the inner wall of the box300of the speaker20, to limit the height of the speaker core10in the box300, so as to ensure that the diaphragm200on the speaker core10can vibrate up and down in the height direction of the box300.

In addition, the limiting portion121is disposed, to implement quick positioning for assembly of the speaker core10into the box300. For example, when the speaker core10is moved from a bottom of the box300to an inner cavity of the box300, the speaker core10can be quickly positioned in the inner cavity of the box300provided that the limiting portion121on the speaker core10fits with the protruding portion320on the inner wall of the box300, and then the speaker core10is fastened to the inner wall of the box300. In the entire process, efficiency of assembling the speaker core10into the box300is improved.

In specific disposing, a bump (not shown in the figure) may be disposed on the outer sidewall of the diaphragm frame120, and the bump may be used as the limiting portion121. When the speaker core10is assembled into the box300, the bump fits with the protruding portion320in the box300. For example, the bump may be abutted on a bottom of the protruding portion320, to limit the height of the speaker core10in the box300.

The bottom of the protruding portion320refers to a side that is of the protruding portion320and that faces the bottom of the box300.

To improve a limiting effect, two or more bumps may be disposed at intervals on the outer sidewall of the diaphragm frame120in a circumferential direction. For example, when there are two bumps, the two bumps may be respectively symmetrically disposed on two sides of an axis of the basin frame100, to ensure balance of force exerted on the speaker core10in the box300. For another example, four bumps may be evenly disposed on the outer sidewall of the diaphragm frame120in the circumferential direction, to further improve stability of the speaker core10in the box300.

In some examples, at least a part of the top surface of the diaphragm frame120may be configured as the limiting portion121(refer toFIG.1). For example, a part of an outer edge of the diaphragm frame120may be used as the limiting portion121, and when the speaker core10is assembled into the box300, the limiting portion121is abutted on the side that is of the protruding portion320and that faces the bottom of the box300.

In this embodiment of this application, a part of the top surface of the diaphragm frame120is used as the limiting portion121, to ensure that when the speaker core10in this embodiment of this application is stably limited to a specific height in the box300of the speaker20, a structural setting of the speaker core10is simplified, so as to improve the manufacturing efficiency of the speaker core10.

In addition, the limiting portion121is abutted on the side that is of the protruding portion320and that faces the inside of the box300, to simplify a fitting structure between the limiting portion121and the protruding portion320, so as to improve efficiency of positioning the speaker core10in the box300.

In actual application, a cross section of the basin frame100may be disposed as a quadrilateral structure (refer toFIG.1). For example, the basin frame100may be of a cuboid structure. In this way, any cross section of the diaphragm frame120at a periphery of the vibration space110may be of a rectangular structure. There are four corners at the top of the basin frame100, and a part of a top surface of each corner is configured as the limiting portion121.

Based on the setting of the four limiting portions121, there may be four protruding portions320in the box300, and the four protruding portions320fit with the corresponding limiting portions121. When the speaker core10is assembled into the box300, all top surfaces of four corners of the diaphragm frame120are abutted on bottoms of the corresponding protruding portions320, to limit the height of the speaker core10in the box300.

In some other examples, the protruding portion320in the box300may alternatively be a ring-shaped protruding portion disposed around the inner wall of the box300. In this case, top surfaces of the four corners of the basin frame100are respectively abutted on corresponding positions of the ring-shaped protruding portion320.

In this embodiment of this application, the cross section of the basin frame100is disposed as a quadrilateral structure, and top surfaces of four corners of the quadrilateral structure are used as limiting portions121. In this way, it is ensured that the speaker core10is stably assembled at the preset height in the box300of the speaker20, and a quantity of limiting portions121is increased in the four-corner structure, so that the four corners of the basin frame100can be simultaneously abutted on the protruding portion320in the box300, to further improve stability of the basin frame100of the speaker core10on a side of the protruding portion320.

It may be understood that when the ring-shaped protruding portion320is disposed around the inner wall of the box300, the four limiting portions121can be stably and accurately abutted on a bottom surface of the protruding portion320. In this way, fitting efficiency and fitting stability between the four limiting portions121and the bottom surface of the protruding portion320are improved, and a case in which there is misalignment between the four limiting portions121and the protruding portion320in a horizontal direction is avoided.

In actual application, the bottom surface of the protruding portion320in the box300of the speaker20is of a planar structure, and the top surface that is of the corner of the diaphragm frame120and that is configured as the limiting portion121is also of a planar structure.

Based on this, in specific disposing, a part that is of the diaphragm folded ring220and that is located on the limiting portion121may be configured as a plane (as shown by a inFIG.2), and the plane a is in contact with a surface of the limiting portion121. For example, the diaphragm folded ring220located on the top surfaces of the four corners of the diaphragm frame120is also disposed as a plane a, and the plane a is in close contact with the top surfaces of the corners. In this way, fitting between the limiting portion121on the speaker core10and the protruding portion320is abutment between planes, to increase a contact area between the speaker core10and the protruding portion320, so that the limiting portion121and the diaphragm folded ring220located on the limiting portion121are stably abutted on the bottom surface of the protruding portion320, to improve stability of the speaker core10in the box300.

In addition, the diaphragm folded ring220located on the limiting portion121is disposed as a plane. In this way, the diaphragm folded ring220can be in close contact with the limiting portion121, to improve stability of the diaphragm folded ring220on the limiting portion121and improve a sealing effect of connection between the diaphragm200and the basin frame100.

In another example, the diaphragm folded ring220located on the top surface of the corner may be of an arc-shaped structure or an irregular non-planar structure. This is not limited in this embodiment of this application.

Refer toFIG.6. An embodiment of this application further provides a speaker20, including a box300and a speaker core10. The speaker core10is mounted in core space310of the box300.

The speaker core10may be the speaker core10in any one of the foregoing examples. Details are not described herein one by one for a specific structure of the speaker core10.

In this embodiment of this application, the speaker core10is disposed in the box300of the speaker20, and at least a part of an arc-shaped portion221of a diaphragm folded ring220is disposed above a diaphragm frame120, so that the arc-shaped portion221of the diaphragm folded ring220fully uses thickness space of the diaphragm frame120of a basin frame100. In this way, when a width of the arc-shaped portion221of the diaphragm folded ring220is ensured, a radial size of a diaphragm mass210located on an inner edge of the diaphragm folded ring220can be increased. Therefore, an effective vibration area is increased, to increase a sound pressure level of the speaker20in a full frequency band range. In addition, a case in which a nonlinear problem is aggravated due to an excessively small width of the arc-shaped portion221of the diaphragm folded ring220is avoided, to ensure that increase of an amplitude of the speaker20is not inhibited and to increase a maximum value of the amplitude of the speaker20.

Refer toFIG.7andFIG.8. As described above, a protruding portion320extends on an inner wall of the box300in this embodiment of this application, and there is a limiting portion121on a sidewall of the speaker core10. The limiting portion121fits with the protruding portion320, to limit a height of the speaker core10in the box300.

In this embodiment of this application, the limiting portion121is disposed on the sidewall of the speaker core10, so that the limiting portion121fits with an inner wall of the box300of the speaker20, to limit the height of the speaker core10in the box300, so as to ensure that a diaphragm200on the speaker core10can vibrate up and down in a height direction of the box300. In addition, the limiting portion121is disposed, to implement quick positioning for assembly of the speaker core10into the box300. For example, when the speaker core10is moved from a bottom of the box300to an inner cavity of the box300, the speaker core10can be quickly positioned in the inner cavity of the box300provided that the limiting portion121on the speaker core10fits with the protruding portion320on the inner wall of the box300, to improve efficiency of assembling the speaker core10into the box300.

For a manner of specifically disposing the limiting portion121, directly refer to the foregoing related content. Details are not described herein.

FIG.9is a cutaway drawing ofFIG.8along a line A-A, andFIG.10is a locally enlarged diagram of I inFIG.9. Refer toFIG.9andFIG.10. The speaker20in this embodiment of this application may further include a sealing layer400. The sealing layer400is disposed between an outer sidewall of the speaker core10and the inner sidewall of the box300. For example, the sealing layer400is disposed between a first connecting portion222of the speaker core10and the inner sidewall of the box300, to seal the outer sidewall of the speaker core10and the inner sidewall of the box300.

In this embodiment of this application, the sealing layer400is disposed between the outer sidewall of the speaker core10and the inner sidewall of the box300, to prevent a sound in the speaker20from leaking from a bottom of the speaker20, so as to ensure intensity of a sound propagated from a front of the speaker20.

The sealing layer400may be a sealing ring sleeved on an outer side of the speaker core10. In some examples, the sealing layer400may alternatively be sealant poured between the outer sidewall of the speaker core10and the inner sidewall of the box300. A component of the sealant may include but is not limited to any one or more of natural resin, natural rubber, or synthetic rubber.

To facilitate filling of the sealant, a guide groove (not shown in the figure) may be disposed inwardly on the inner sidewall of the box300, and the guide groove is located on a horizontal plane on which a top of the speaker core10is located. In this way, when the sealant is poured, the sealant may be introduced from one end of the guide groove to a position between the outer sidewall of the speaker core10and the inner sidewall of the box300, to ensure a sealing effect between the outer sidewall of the speaker core10and the inner sidewall of the box300.

An embodiment of this application further provides an electronic device, including the foregoing speaker20.

In this embodiment of this application, the speaker20is disposed in the electronic device, to increase a sound pressure level of the speaker20in a full frequency band range, and avoid a case in which a nonlinear problem is aggravated due to an excessively small width of an arc-shaped portion221of a diaphragm folded ring220in the speaker20, so as to ensure that increase of an amplitude of the speaker20is not inhibited and to increase a maximum value of the amplitude of the speaker20.

It should be noted that the electronic device in this embodiment of this application may include but is not limited to a mobile or fixed terminal including the speaker20, for example, a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC for short), a handheld computer, an intercom, a netbook, a POS terminal, a personal digital assistant (personal digital assistant, PDA for short), a wearable device, or a virtual reality device.

In the descriptions of embodiments of this application, it should be noted that unless otherwise expressly specified and limited, terms “mount”, “connected”, and “connection” should be understood in a broad sense. For example, there may be a fixed connection, an indirect connection established by using an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements. For a person of ordinary skill in the art, specific meanings of the terms in embodiments of this application may be understood based on a specific situation.

In the specification, claims, and accompanying drawings of embodiments of this application, the terms “first”, “second”, “third”, “fourth”, and the like (if existent) are intended to distinguish between similar objects but do not necessarily indicate a specific order or sequence.