Loudspeaker and electronic equipment

Abstract

The invention discloses a loudspeaker and electronic equipment, and the loudspeaker comprises a first housing which is provided with a sound output channel; the second shell is connected with the first shell, so that a first cavity is formed; the loudspeaker core is arranged in the first cavity, after the loudspeaker core is connected with the first shell, the first cavity is divided into a front cavity and a rear cavity, the front cavity is communicated with the sound outlet channel, and the rear cavity is a sealed cavity; wherein the first shell body and the second shell body are prepared from the following raw material components in percentage by weight: 50 to 90 percent of polymer composite material and 10 to 50 percent of hollow sphere material. 10-50wt% of the hollow sphere material is added into the raw material components of the first shell and the second shell, so that the density of the first shell and the second shell can be reduced, and the weight of the first shell and the weight of the second shell are reduced.

Description

Loudspeaker and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on August 1, 2022, with application number 202210914268.0 and invention name “A Speaker and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of electronic equipment, and in particular relates to a speaker and an electronic device. Background Art

[0003] Currently, electronic devices such as personal computers, tablets, and mobile phones all have sound playback capabilities, and the device used to achieve this sound playback function is a speaker. Generally, a speaker consists of a housing and a speaker core. The speaker core is the core component for generating external sound, and the housing provides a sound cavity for the speaker core to achieve corresponding acoustic performance. The speaker housing is formed by welding two parts together.

[0004] The speaker housing is typically made of plastic particles. Currently, to ensure good welding performance, these particles are typically made from a polymer composite material consisting of polycarbonate (PC) and glass fiber. However, the high density of these polymer composites results in a heavier housing.

[0005] Therefore, the shell material prepared by using a polymer composite material composed of PC (polycarbonate) and glass fiber cannot meet the current demand for weight reduction of electronic equipment.

[0006] Summary of the Invention

[0007] In order to solve the problem that the shell materials in the prior art cannot meet the current demand for weight reduction of electronic equipment, the present application provides a speaker and an electronic device.

[0008] In the first aspect, the present application provides a speaker, comprising: a first shell, wherein the first shell is provided with a sound outlet channel; a second shell, wherein the second shell is snap-fitted and connected to the first shell to form a first cavity; a speaker core, wherein the speaker core is arranged in the first cavity, and after the speaker core is connected to the first shell, the first cavity is divided into a front cavity and a rear cavity, wherein the front cavity is connected to the sound outlet channel, and the rear cavity is a sealed cavity; wherein the raw material components of the first shell and the second shell, in terms of mass percentage, include: 50-90wt% of a polymer composite material, and 10-50wt% of a hollow sphere material.

[0009] Thus, adding 10-50 wt% of hollow sphere material to the raw material components of the first shell and the second shell can reduce the density of the first shell and the second shell, thereby reducing the weight of the first shell and the second shell.

[0010] In one possible implementation, welding ribs are provided on the second shell, and the welding ribs form surface contact with the first shell during welding; when the second shell is subjected to high-frequency vibration, the welding ribs and the first shell are used to rub against each other at the contact surface to generate heat, so that the first shell and the second shell are welded together.

[0011] Thus, by changing the shape of the welding ribs and increasing the contact area between the welding ribs and the first shell, greater energy can be generated during the welding process to ensure welding reliability. Therefore, the present application is compatible with the different properties of various polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, so that the speaker provided by the embodiment of the present application can meet the requirements of speaker reduction while ensuring welding reliability.

[0012] In one implementation, the cross section of the welding rib is trapezoidal, rectangular or W-shaped.

[0013] In this way, by changing the shape of the welding rib, the contact area between the welding rib and the first shell is increased, so that greater energy can be generated during the welding process to ensure the reliability of the welding.

[0014] In one implementation, the outer surface of the welding rib is roughened.

[0015] In this way, the outer surface of the weld rib is roughened to increase its roughness. This increased surface roughness of the weld rib facilitates thermal welding with the first shell through friction. This application does not limit the method of surface roughening. For example, a concave-convex texture can be provided on the outer surface of the weld rib; for another example, concave-convex particles can be provided on the outer surface of the weld rib.

[0016] In one possible implementation, a glue overflow groove is provided on the second shell along the periphery of the welding rib, and the glue overflow groove is used to accommodate the molten material overflowing after the welding rib is melted.

[0017] In this way, the molten material formed after the welding rib melts will overflow into the glue overflow groove, thereby solving the problem of molten material overflowing due to the increase in the interference volume of the welding rib, which affects the appearance of the second shell.

[0018] In one implementation, the polymer composite material includes 80-100 wt% of polymer material and 0-20 wt% of fiber material.

[0019] Thus, the polymer material has excellent mechanical, insulating, and thermal insulation properties. The fiber material can enhance the strength of the first shell. Therefore, the polymer composite material formed by combining the polymer material and the fiber material can ensure that the prepared first and second shells have excellent physical properties.

[0020] In one achievable embodiment, the polymer material is selected from at least one of PA, PC, ABS, and PET, and the fiber material is selected from at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

[0021] In one implementation, the raw material components of the first shell and the second shell include: 77 wt% PA, 3 wt% glass fiber, and 20 wt% hollow sphere material.

[0022] In one implementation, the raw material components of the first shell and the second shell include: 40 wt% PA, 10 wt% glass fiber, and 50 wt% hollow sphere material.

[0023] In one embodiment, the first and second shells are made of 81 wt% PA, 9 wt% glass fiber, and 10 wt% hollow sphere material. In one embodiment, the hollow sphere material has a particle size of 2-130 μm and a density of 0.2-0.6 g / cm3.

[0024] In one achievable embodiment, the hollow sphere material is selected from at least one of silicon dioxide, aluminum oxide, zirconium oxide, titanium dioxide, ferroferric oxide, zinc oxide, carbon nanotubes, graphene, low carbon steel, 316 stainless steel, 304 stainless steel, pure iron, and polystyrene.

[0025] In a second aspect, the present application further provides an electronic device, comprising a speaker as described in any one of the first aspects.

[0026] In this way, the electronic device using the speaker provided by this application can reduce the weight by 7% compared with the electronic device in the prior art.

[0027] In summary, the present application provides a speaker and electronic device, which, in order to meet the weight reduction requirements, adds 10-50wt% of hollow sphere material to the raw material components of the first shell and the second shell. In this way, the density of the first shell and the second shell can be reduced, thereby reducing the weight of the first shell and the second shell. In addition, in order to be compatible with the different characteristics of a variety of polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, the embodiment of the present application increases the contact area between the welding rib and the first shell by changing the shape of the welding rib. In this way, greater energy can be generated during the welding process to ensure the reliability of the welding. In other words, the speaker provided by the embodiment of the present application can not only meet the weight reduction requirements of the speaker, but also ensure the reliability of the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic diagram of the overall structure of a speaker provided in an embodiment of the present application;

[0029] FIG2 is a schematic diagram of the exploded structure of a speaker provided in an embodiment of the present application;

[0030] FIG3A is a cross-sectional view taken along line A1-A1 of a speaker provided in an embodiment of the present application;

[0031] FIG3B is a cross-sectional view taken along line A2-A2 of a loudspeaker provided in an embodiment of the present application;

[0032] FIG4 is a flow chart of a method for preparing a housing according to an embodiment of the present application;

[0033] FIG5A is a schematic structural diagram of a second housing 200 provided in an embodiment of the present application;

[0034] FIG5B is a cross-sectional view of a second housing 200 provided in an embodiment of the present application;

[0035] FIG6A is a schematic structural diagram of another second housing 200 provided in an embodiment of the present application;

[0036] FIG6B is a cross-sectional view of another second housing 200 provided in an embodiment of the present application;

[0037] FIG6C is a partial enlarged view of point M in FIG6B .

[0038] Description of Reference Numerals

[0039] 100-first shell, 110-sound outlet channel, 120-protrusion, 200-second shell, 300-speaker core, 310-upper surface, 320-lower surface, 400-first cavity, 410-front cavity, 420-rear cavity, 510-welding rib, 520-welding rib, 600-overflow glue groove. DETAILED DESCRIPTION

[0040] The following will clearly describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, other embodiments obtained by ordinary technicians in this field without making any creative work are all within the scope of protection of this application.

[0041] To facilitate understanding, the English abbreviations and related technical terms involved in the embodiments of this application are explained and described below.

[0042] PA: English name Polyamide, Chinese name: polyamide, also known as nylon.

[0043] PC: English name Polycarbonate, Chinese name: polycarbonate.

[0044] ABS: English name Acrylonitrile Butadiene Styrene, Chinese name: Acrylonitrile-butadiene-styrene copolymer.

[0045] PET: English name Polyethylene terephthalate, Chinese name: polyethylene terephthalate, also known as polyester resin.

[0046] Currently, electronic devices such as personal computers, tablets, and mobile phones all have sound playback capabilities, and the device used to achieve this sound playback function is a speaker. Generally, a speaker consists of a housing and a speaker core. The speaker core is the core component for generating external sound, and the housing provides a sound cavity for the speaker core to achieve corresponding acoustic performance. The speaker housing is formed by welding two parts together.

[0047] Figure 1 is a schematic diagram of the overall structure of a speaker provided in an embodiment of the present application, and Figure 2 is a schematic diagram of the exploded structure of a speaker provided in an embodiment of the present application. As shown in Figures 1 and 2, the speaker includes a first shell 100, a second shell 200, and a speaker core 300.

[0048] Figure 3A is a cross-sectional view taken along the A1-A1 axis of a speaker provided in an embodiment of the present application. As shown in Figure 3A , after the first housing 100 and the second housing 200 are mated and connected, a first cavity 400 is formed. The speaker core 300 is located within the first cavity 400. The speaker core 300 includes an upper surface 310 facing the first housing 100 and a lower surface 320 facing the second housing. After the speaker core 300 and the first housing 100 are mated and connected, the first cavity 400 is divided into a front cavity 410 and a rear cavity 420. The upper surface 310 of the speaker core 300 and the first housing 100 enclose the front cavity 410, while the lower surface 320 and side surfaces of the first housing 100, the second housing 200, and the speaker core 300 enclose the rear cavity 420. The speaker core 300 and the first housing 100 can be sealed by adhesive bonding, while the first housing 100 and the second housing 200 can be sealed by welding.

[0049] Figure 3B is a cross-sectional view taken along the A2-A2 direction of the speaker provided in an embodiment of the present application. As shown in Figure 3B, a protrusion 120 protruding in a direction away from the second shell 200 is provided on the first shell 100, and a sound outlet channel 110 is provided on the side of the protrusion 120. The sound outlet channel 110 is connected to the front cavity 410 but not to the rear cavity 420. In this way, when the speaker core 300 is working, it can push the air in the front cavity 410 to vibrate, and the vibrating air in the front cavity 410 is discharged by the sound outlet channel 110 to form sound. The direction of the arrow in Figure 3B is the sound outlet direction. Among them, the sound outlet channel 110 can be connected to the sound outlet hole on the frame of the electronic device, thereby further discharging the sound outside the electronic device to be received by the user.

[0050] In the embodiment of the present application, the rear cavity 420 is a sealed cavity. Since the sound waves generated by the upper surface 310 of the speaker core 300 are 180° out of phase with the sound waves generated by the lower surface 320, if the rear cavity 420 were not sealed, the sound waves generated by the upper surface 310 and the lower surface 320 would be muted due to phase interference. Therefore, designing the rear cavity 420 as a sealed cavity can eliminate phase interference.

[0051] As shown in Figure 3A, the connection area between the first housing 100 and the second housing 200 is located within the rear cavity 420. To meet the aforementioned acoustic performance requirements, the rear cavity 420 must be a sealed cavity. Therefore, this application requires that the connection area between the first housing 100 and the second housing 200 be a sealed connection to avoid sound leakage.

[0052] Currently, to ensure reliable welding performance, the first and second housings 100 and 200 are made of a polymer composite material consisting of PC (polycarbonate) and glass fiber. However, the plastic particles formed by this polymer composite material are relatively dense, resulting in a relatively heavy first and second housings 100 and 200. Therefore, this material cannot meet the demand for weight reduction in electronic devices.

[0053] To this end, an embodiment of the present application provides a speaker. By changing the raw material components of the first shell 100 and the second shell 200, the weight of the speaker is reduced to meet the demand for weight reduction of electronic equipment.

[0054] The shell material provided in the embodiments of the present application is described below.

[0055] In the embodiment of the present application, the raw material components of the first shell 100 and the second shell 200 are the same. The raw material components of the shells are described below using the first shell 100 as an example.

[0056] In the embodiment of the present application, the raw materials of the first shell 100 include a polymer composite material and a hollow sphere material. In the raw materials, the polymer composite material accounts for 50-90 wt% of the raw materials, and the hollow sphere material accounts for 10-50 wt% of the raw materials.

[0057] Wherein, the values ​​of the above-mentioned components include upper limits, lower limits, and any values ​​between the upper limits and lower limits. For example, the value of the polymer composite material is 50-90wt%, specifically including 50wt%, 90wt%, and any values ​​between 50wt% and 90wt%. For example, the value of the polymer composite material can be 60wt%, 65wt%, 70wt%, 75wt%, 80wt%, 85wt%, etc. For another example, the value of the hollow sphere material is 10-50wt%, specifically including 10wt%, 50wt%, and any values ​​between 10wt% and 50wt%. For example, the value of the hollow sphere material can be 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, 40wt%, etc.

[0058] In the embodiment of the present application, hollow sphere material is added to the raw material components of the first shell 100 , which can reduce the density of the first shell 100 and thus reduce the weight of the first shell 100 .

[0059] The polymer composite material in the embodiment of the present application can ensure that the raw material components have good processability and ensure the mechanical properties of the first shell 100, such as tensile strength, elongation at break, flexural strength, and flexural modulus.

[0060] In the embodiment of the present application, the polymer composite material can be a composite material of polymer material and fiber material. The polymer material has excellent mechanical properties, insulation properties, thermal insulation properties, etc. The fiber material can enhance the strength of the first housing 100.

[0061] In a specific embodiment, the mass percentage of the polymer material in the polymer composite material is 80-100 wt %, and the mass percentage of the fiber material in the polymer composite material is 0-20 wt %.

[0062] The values ​​of the above components include upper limits, lower limits, and any values ​​between the upper and lower limits. For example, the value of the polymer material is 80-100wt%, specifically including 80wt%, 100wt%, and any values ​​between 80wt% and 100wt%, such as 85wt%, 90wt%, 95wt%, etc. For another example, the value of the fiber material is 0-20wt%, specifically including 0wt%, 20wt%, and any values ​​between 0wt% and 20wt%, such as 0.5wt%, 5wt%, 10wt%, 15wt%, etc.

[0063] Optionally, the polymer material may be at least one of PA, PC, ABS, and PET.

[0064] Optionally, the fiber material may be at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

[0065] In the embodiment of the present application, hollow sphere materials are added to the raw material components to reduce the density of the first shell 100 and the second shell 200, thereby achieving the effect of reducing the weight of the speaker.

[0066] Optionally, the particle size of the hollow sphere material can be 2-130 μm, and the density can be 0.2-0.6 g / cm 3 .

[0067] The embodiment of the present application does not limit the selection of the hollow sphere material. The hollow sphere material can be any one or more of ceramics, carbon materials, metals, and polymers.

[0068] Optionally, the hollow sphere material can be selected from at least one of silicon dioxide, aluminum oxide, zirconium oxide, titanium dioxide, ferroferric oxide, zinc oxide, carbon nanotubes, graphene, low carbon steel, 316 stainless steel, 304 stainless steel, pure iron, and polystyrene.

[0069] It should be noted that in the embodiments of the present application, the particle sizes of the hollow sphere materials incorporated into the raw material components can be the same or different. For example, the raw material components include hollow sphere materials of two particle sizes, one having a particle size of 2 μm and the other having a particle size of 10 μm. For another example, the raw material components include hollow sphere materials of one particle size, and the particle size of the hollow sphere material is 13 μm.

[0070] It should also be noted that in the embodiments of the present application, the hollow sphere materials incorporated into the raw material components can be the same or different. For example, the raw material components may include three types of hollow sphere materials: the first type is silicon dioxide, the second type is carbon nanotubes, and the third type is mild steel. Another example may be the raw material components including one type of hollow sphere material, where the hollow sphere material is aluminum oxide.

[0071] FIG4 is a flow chart of a method for preparing a shell according to an embodiment of the present application. As shown in FIG4 , the method for preparing a shell according to an embodiment of the present application may include the following steps:

[0072] Step S1, preparing raw materials according to the following ratio, the raw material components include: 50-90wt% of polymer composite material, and 10-50wt% of hollow sphere material.

[0073] In step S2, the raw material components are mixed evenly and then formed into plastic particles through a granulation process.

[0074] In step S3 , the prepared plastic particles are used to prepare the first shell 100 and the second shell 200 respectively through an injection molding process or a molding process.

[0075] In summary, the embodiment of the present application also provides a method for preparing a shell, first weighing the raw material components provided in the embodiment of the present application according to the ratio, wherein the raw material components include: 50-90wt% of a polymer composite material, and 10-50wt% of a hollow sphere material. Then, after the above raw material components are evenly mixed, plastic particles are formed through a granulation process. Finally, the plastic particles prepared above are used to prepare the first shell 100 and the second shell 200 respectively through an injection molding process or a molding process. Of course, the above raw material components can also be evenly mixed and then directly prepared through an injection molding process or a molding process to obtain the first shell 100 and the second shell 200 respectively, which is not limited in this application.

[0076] The following are some examples of the mass percentages of the various raw material components provided in this application:

[0077] Example 1: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 77 wt % PA, 3 wt % glass fiber, and 20 wt % hollow sphere material.

[0078] Example 2: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 40 wt % PA, 10 wt % glass fiber, and 50 wt % hollow sphere material.

[0079] Example 3: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 81 wt % of PA, 9 wt % of glass fiber, and 10 wt % of hollow sphere material.

[0080] To illustrate that the raw material components of the first shell 100 and the second shell 200 in this application are conducive to weight reduction and have good physical properties such as tensile strength, elongation at break, flexural strength, and flexural modulus, the applicant prepared the first shell 100 and the second shell 200 according to the composition ratios of Examples 1 to 3 and the comparative examples in Table 1, and in accordance with the shell preparation method provided above. Since the raw material components of the first shell 100 and the second shell 200 are the same, the performance of the prepared first shell 100 and the second shell 200 is also the same. Therefore, this application only performs performance testing on the prepared first shell 100. The test results of the performance test on the first shell 100 are shown in Table 1.

[0081] Table 1 Performance test results of the first housing 100

[0082] As shown in Table 1, the density of the first shell 100 prepared by using the raw material component ratios in Examples 1 to 3 is less than the density of the first shell 100 prepared by using the raw material component ratios in Comparative Example 1. In other words, the embodiment of the present application can reduce the weight of the prepared first shell 100 by adding hollow sphere materials to the raw material components. Specifically, the first shell 100 prepared in Example 1 can reduce the weight by 27% compared to the first shell prepared in Comparative Example 1. For the electronic device as a whole, the first shell and the second shell prepared in Example 1 can reduce the weight by 7% compared to the first shell 100 and the second shell 200 prepared in Comparative Example 1.

[0083] Please continue to refer to Table 1. The first shell 100 prepared by using the raw material component ratios in Examples 1 to 3 has good physical properties such as tensile strength, elongation at break, bending strength and bending modulus. The first shell 100 prepared in this way can meet the requirements of application in electronic devices.

[0084] As shown in Figure 3A, the connection area between the first housing 100 and the second housing 200 is located within the rear cavity 420. To meet acoustic performance requirements, the rear cavity 420 must be a sealed cavity. Therefore, this application requires that the connection area between the first housing 100 and the second housing 200 be a sealed connection to avoid sound leakage.

[0085] The present application does not limit the specific sealing connection method between the first housing 100 and the second housing 200. For example, the first housing 100 and the second housing 200 can be connected by ultrasonic welding, hot air welding, hot plate welding, etc. Taking ultrasonic welding as an example, ultrasonic welding refers to the use of high-frequency vibration energy to melt the material at the joint, and then using the melted material to cool and solidify again to achieve the purpose of connecting the first housing 100 and the second housing 200.

[0086] FIG5A is a schematic structural diagram of a second shell 200 provided in an embodiment of the present application.

[0087] FIG5B is a cross-sectional view of a second shell 200 provided in an embodiment of the present application.

[0088] As shown in Figures 5A and 5B, in one implementation, when ultrasonic welding is used to connect the first housing 100 and the second housing 200, welding ribs 510 are pre-deployed on the first housing 100 or the second housing 200 to enhance welding strength. Thus, the first housing 100 and the second housing 200 can be connected by melting the welding ribs. The welding ribs 510 can be provided in the area on the edge of the second housing 200 used for connection to the first housing 100 and can be arranged in a closed annular shape around the edge of the second housing 200.

[0089] As shown in Figure 5B , the cross-section of the welding rib 510 is triangular, and its width gradually decreases as it approaches the first housing 100. Thus, when the welding rib 510 connects the first housing 100 and the second housing 200, the welding rib 510 on the second housing 200 aligns with the corresponding connection points on the first housing 100. Once aligned, the welding rib 510 on the second housing 200 forms line contact with the first housing 100. During ultrasonic welding, the second housing 200 is subjected to high-frequency vibration energy, and the welding rib 510 and the first housing 100 generate heat through friction, melting the materials and fusing them together.

[0090] It should be noted that the triangular-shaped welding ribs 510 are primarily suitable for use when the raw materials include crystalline polymer materials, such as when the first shell 100 and the second shell 200 are made of polycarbonate (PC). Because PC is a crystalline material, it requires less energy during ultrasonic welding. Therefore, even with the triangular-shaped welding ribs 510, welding reliability can be guaranteed.

[0091] However, if the first housing 100 and the second housing 200 are made of semi-crystalline polymers such as PA, the triangular-shaped welding ribs 510 may crack due to the small contact area between the triangular-shaped welding ribs 510 and the first housing 100, which requires more energy than crystalline polymers during ultrasonic welding.

[0092] In order to improve the problem of welding cracking that may occur after welding semi-crystalline polymer materials, the present application further improves the structure of the welding rib 510.

[0093] FIG6A is a schematic structural diagram of another second shell 200 provided in an embodiment of the present application.

[0094] FIG6B is a cross-sectional view of another second shell 200 provided in an embodiment of the present application.

[0095] As shown in FIG. 6A and FIG. 6B , in another possible implementation, a circle of welding ribs 520 with a pyramidal structure is provided on the second housing 200 in an area for connecting with the first housing 100 .

[0096] As shown in Figure 6B, the cross-section of the welding rib 520 is trapezoidal, with its width gradually decreasing as it approaches the first housing 100. Thus, when the first housing 100 and the second housing 200 are connected via the welding rib 520, the welding rib 520 on the second housing 200 aligns with the corresponding connection points on the first housing 100. Once aligned, the welding rib 510 on the second housing 200 forms surface contact with the first housing 100. During ultrasonic welding, the second housing 200 is subjected to high-frequency vibration energy, and the welding rib 520 and the first housing 100 are in full contact. The friction between the two creates heat, resulting in a fusion of the two.

[0097] In an embodiment of the present application, the welding rib 510 with a triangular cross-section is improved to a welding rib 520 with a trapezoidal cross-section, thereby increasing the contact area between the welding rib 510 and the first shell 100. In this way, the friction area between the welding rib 520 and the first shell 100 can be increased during the welding process, thereby generating greater energy to ensure the reliability of the welding.

[0098] Figure 6C is a partial enlarged view of point M in Figure 6B. As shown in Figure 6C, the width of the area of ​​the first housing 100 used for connection to the second housing 200 is L1, and the width of the welding rib 520 in contact with the first housing 100 is L2. To generate greater energy during welding and ensure welding reliability, width L2 can be designed to be 10%-100% of width L1.

[0099] In the embodiment of the present application, the outer surface of the welding rib 510 or the welding rib 520 can also be roughened to increase the roughness of the outer surface of the welding rib 510 or the welding rib 520. In this way, the welding rib 510 or the welding rib 520 with increased surface roughness is more conducive to generating heat through mutual friction with the first shell 100, thereby being welded together.

[0100] It should be noted that the present application does not limit the method of surface roughening. For example, a concave-convex texture can be provided on the outer surface of the welding rib 510 or the welding rib 520; for another example, concave-convex particles can be provided on the outer surface of the welding rib 510 or the welding rib 520.

[0101] As shown in Figures 5B and 6B, compared to the triangular welding rib 510, the trapezoidal welding rib 520 increases the interference volume. As a result, the molten material formed after the welding rib melts easily overflows onto the surface of the second shell 200, affecting the appearance of the second shell 200. To this end, as shown in Figure 6B, the present application provides an overflow groove 600 on the second shell 200 along the periphery of the welding rib 520. In this way, the molten material formed after the welding rib 520 melts will overflow into the overflow groove 600, thereby solving the problem of molten material overflowing due to the increased interference volume of the welding rib 520, which affects the appearance of the second shell 200.

[0102] It should be noted that the above embodiment is merely illustrative of a welding rib 520 having a trapezoidal cross-section, and does not limit the structure of the welding rib 520. Any structure can be employed as long as the contact area between the welding rib 520 and the first housing 100 is increased. For example, the cross-section of the welding rib 520 in the embodiment of the present application may also be rectangular, W-shaped, or other regular or irregular shapes.

[0103] In summary, the speaker provided in the embodiment of the present application, in order to meet the weight reduction requirements, adds 10-50wt% of hollow sphere material to the raw material components of the first shell 100 and the second shell 200. In this way, the density of the first shell 100 and the second shell 200 can be reduced, thereby reducing the weight of the first shell 100 and the second shell 200. In addition, in order to be compatible with the different properties of various polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, the embodiment of the present application increases the contact area between the welding ribs and the first shell 100 by changing the shape of the welding ribs. In this way, during the welding process, greater energy can be generated to ensure the reliability of the welding. In other words, the speaker provided in the embodiment of the present application can both meet the weight reduction requirements of the speaker and ensure the reliability of the welding.

[0104] The present application also provides an electronic device including the speaker provided in the present application. The electronic device in the present application can be any terminal device with a speaker, such as a personal computer, tablet, mobile phone, bracelet, watch, etc.

[0105] In the description of this application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships in the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this application.

[0106] It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0107] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0108] It will be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

[0109] The scope of the present application is limited only by the appended claims.

Claims

1. A loudspeaker, characterized in that: include: a first shell, wherein the first shell is provided with a sound outlet channel; a second shell, the second shell being snap-fitted and connected to the first shell to form a first cavity; a speaker core, the speaker core being disposed in the first cavity, and after the speaker core is connected to the first housing, dividing the first cavity into a front cavity and a rear cavity, wherein the front cavity is connected to the sound outlet channel, and the rear cavity is a sealed cavity; The raw material components of the first shell and the second shell include, by weight percentage, 50-90 wt% of a polymer composite material and 10-50 wt% of a hollow sphere material.

2. The loudspeaker according to claim 1, wherein The second shell is provided with welding ribs, which form surface contact with the first shell during welding; when the second shell is subjected to high-frequency vibration, the welding ribs and the first shell are used to rub against each other at the contact surface to generate heat, so that the first shell and the second shell are welded together.

3. The loudspeaker according to claim 2, characterized in that The cross section of the welding rib is trapezoidal, rectangular or W-shaped.

4. The loudspeaker according to claim 2, characterized in that The outer surface of the welding rib is roughened.

5. The loudspeaker according to claim 2, characterized in that A glue overflow groove is provided on the second shell along the periphery of the welding rib, and the glue overflow groove is used to accommodate the molten material overflowing after the welding rib is melted.

6. The loudspeaker according to claim 1, wherein The polymer composite material comprises 80-100 wt% of polymer material and 0-20 wt% of fiber material.

7. The loudspeaker according to claim 6, characterized in that The polymer material is selected from at least one of PA, PC, ABS, and PET, and the fiber material is selected from at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

8. The loudspeaker according to claim 7, characterized in that The raw material components of the first shell and the second shell include: 77 wt% PA, 3 wt% glass fiber, and 20 wt% hollow sphere material.

9. The loudspeaker according to claim 7, characterized in that The raw material components of the first shell and the second shell include: 40 wt% PA, 10 wt% glass fiber, and 50 wt% hollow sphere material.

10. The loudspeaker according to claim 7, wherein The raw material components of the first shell and the second shell include: 81 wt% PA, 9 wt% glass fiber, and 10 wt% hollow sphere material.

11. The loudspeaker according to claim 1, wherein The particle size of the hollow sphere material is 2-130 μm and the density is 0.2-0.6 g / cm 3 .

12. The loudspeaker according to claim 1, wherein The hollow sphere material is selected from at least one of silicon dioxide, aluminum oxide, zirconium oxide, titanium dioxide, ferroferric oxide, zinc oxide, carbon nanotubes, graphene, low carbon steel, 316 stainless steel, 304 stainless steel, pure iron, and polystyrene.

13. An electronic device, characterized in that: The electronic device comprises the speaker according to any one of claims 1-12.

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