CN221829086U - Sounding module and electronic equipment - Google Patents

Abstract

The utility model relates to the technical field of electroacoustic conversion and provides a sounding module and electronic equipment, wherein the sounding module comprises a first shell, a magnetic circuit system and a vibration system; the vibration system comprises a vibrating diaphragm assembly and a voice coil arranged on the vibrating diaphragm assembly; the magnetic circuit system comprises a magnetic yoke and a magnet assembly arranged on the magnetic yoke, wherein the magnetic yoke comprises a body part and a bending part which is bent and extended from the body part towards the direction close to the vibrating diaphragm assembly, the magnet assembly is arranged on the body part, a magnetic gap is formed between the bending part and the magnet assembly, one side of the voice coil, which deviates from the vibrating diaphragm assembly, is inserted into the magnetic gap, the periphery of the vibrating diaphragm assembly is fixed on the bending part and clamped between a first shell and the bending part, the first shell and the magnetic yoke are matched to define an internal sound cavity, and the first shell is provided with a sound outlet channel communicated with the internal sound cavity. The utility model reduces the process procedures of the sounding module, simplifies the process flow, reduces the cost and improves the competitive advantage of products in the market.

Description

A sound module and electronic equipment

Technical Field

The utility model relates to the technical field of electroacoustic conversion, in particular to a sound module and an electronic device.

Background Art

Speakers, also known as horns, are a commonly used electroacoustic transducer device that converts electrical signals into acoustic signals and is commonly found in electronic and electrical devices that make sounds. However, with the rapid development of terminal devices such as mobile phones and wearables, consumers pay attention to performance and quality, and low-cost products have a high price advantage and are favored by consumers. Therefore, high performance and low cost have become the main development trend of speakers.

In the prior art, a sound-generating unit such as a speaker mainly includes a plastic shell, a vibration system and a magnetic circuit system. The magnetic yoke in the magnetic circuit system and the plastic shell are assembled to form the entire external structure of the sound-generating unit. When the sound-generating unit is assembled into a sound module, the shell of the sound module includes an upper shell and a lower shell of the module. The upper shell and the lower shell of the module cooperate to form an assembly cavity. The sound-generating unit is arranged in the assembly cavity, and a sound outlet is arranged on the shell of the module. The above-mentioned structural design process is complex and the process cost is high, which affects the market competitiveness of the product.

Utility Model Content

In order to overcome the above-mentioned defects of the prior art, the utility model provides a sound module and an electronic device, which reduce the manufacturing process of the sound module, simplify the process flow, reduce costs, and improve the competitive advantage of the product in the market.

In order to solve the above technical problems, the technical solution of the utility model is:

A sound module comprises a first shell, a magnetic circuit system and a vibration system arranged corresponding to the magnetic circuit system;

The vibration system includes a diaphragm assembly and a voice coil mounted on the diaphragm assembly;

The magnetic circuit system includes a magnetic yoke and a magnet assembly arranged on the magnetic yoke, the magnetic yoke includes a main body and a bent portion bent and extended from the main body toward the diaphragm assembly, the magnet assembly is arranged on the main body, a magnetic gap is formed between the bent portion and the magnet assembly, the side of the voice coil facing away from the diaphragm assembly is inserted into the magnetic gap, the outer periphery of the diaphragm assembly is fixed to the bent portion and clamped between the first shell and the bent portion, the first shell and the magnetic yoke cooperate to define an internal sound cavity, and the first shell is provided with a sound outlet channel connected to the internal sound cavity.

As an improved technical solution, the bending portion includes a first extension portion and a second extension portion, the first extension portion extends along the vibration direction of the vibration system, the second extension portion extends in a direction away from the magnet assembly, and the outer periphery of the diaphragm assembly is fixed to the second extension portion.

As an improved technical solution, the voice coil includes a main body and a lead portion, the main body is located in the magnetic gap, the lead portion includes a suspended portion and a fixed portion, two ends of the suspended portion are respectively connected to the main body and the fixed portion, the fixed portion is supported and fixed to the second extension portion, the bent portion is provided with a wire outlet hole, and one end of the fixed portion away from the suspended portion passes through the wire outlet hole to be electrically connected to an external circuit.

As an improved technical solution, the magnet assembly includes a central magnet and a central magnetic conductive plate arranged on the central magnet. The central magnet is installed on the main body, and a first through hole is provided on the central magnet.

As an improved technical solution, a second through hole communicating with the first through hole is provided on the central magnetic conductive plate.

As an improved technical solution, the diaphragm assembly includes a diaphragm and a vibration plate, wherein:

The diaphragm includes an outer fixing part, a folding ring part and an inner fixing part which are arranged in sequence from the outside to the inside, the outer fixing part is fixed to the bending part, the inner fixing part is connected to the vibration plate, the top of the voice coil is connected to the diaphragm, and the outer peripheral wall of the vibration plate is provided with a light-transmitting groove which is arranged opposite to the top of the voice coil.

As an improved technical solution, the diaphragm is made of a light-transmitting material, and the top of the voice coil is connected to the diaphragm by light-curing adhesive;

An inner peripheral wall of the inner fixing portion is provided with an assembly protrusion, and the assembly protrusion is arranged corresponding to the light-transmitting groove.

As an improved technical solution, the first housing is an integrally formed plastic structure;

Alternatively, a mounting hole corresponding to the magnetic yoke is provided in the cavity of the first shell, and a metal sheet is installed on a side of the mounting hole away from the magnetic yoke.

As an improved technical solution, the sound module also includes a second shell, which is arranged corresponding to the first shell and located on opposite sides of the magnetic yoke. The second shell is provided with a hollow hole arranged corresponding to the magnetic yoke, and part of the magnetic yoke is exposed through the hollow hole.

The present utility model also provides an electronic device, which includes a sound module according to the above embodiment of the present utility model.

After adopting the above technical solution, the beneficial effects of the utility model are:

By setting a first shell, a magnetic circuit system and a vibration system, the magnetic circuit system includes a magnetic yoke and a magnet assembly arranged on the magnetic yoke, the magnetic yoke includes a main body and a bent portion bent and extended from the main body toward the direction close to the diaphragm assembly, the magnet assembly is arranged on the main body, a magnetic gap is formed between the bent portion and the magnet assembly, the side of the voice coil away from the diaphragm assembly is inserted into the magnetic gap, and vibrates in the magnetic gap to produce sound when powered, thereby, the bent portion of the magnetic yoke plays the function of a side magnetic circuit of the magnetic circuit system, simplifying the design structure, the outer peripheral edge of the diaphragm assembly is fixed to the bent portion and clamped between the first shell and the bent portion, thereby, the bent portion of the magnetic yoke also plays the role of a shell, the first shell and the magnetic yoke cooperate to define an internal sound cavity, the first shell is provided with a sound outlet channel connected to the internal sound cavity, thereby, the magnetic yoke can be directly combined with the first shell as a shell, and finally combined into a sound module, thereby simplifying the process flow through the above design, reducing the station design in the process, reducing the cost of the process and the cost of materials, and improving the competitive advantage of the product in the market.

In summary, the utility model provides a sound module and an electronic device, which reduces the manufacturing process of the sound module, simplifies the process flow, reduces costs, and improves the competitive advantage of the product in the market.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In addition, in the drawings, the components or parts are not necessarily drawn according to the actual scale.

FIG1 is a schematic diagram of the coordination structure of a first housing, a magnetic circuit system and a vibration system of a sound module according to an embodiment of the present invention;

FIG2 is a partial cross-sectional structural schematic diagram of a sound module according to an embodiment of the present utility model;

FIG3 is a schematic diagram of an explosion structure of a sound module according to an embodiment of the present invention;

FIG4 is a schematic structural diagram of a magnetic yoke according to an embodiment of the present invention;

FIG5 is a schematic structural diagram of a magnet assembly according to an embodiment of the present invention;

FIG6 is a schematic structural diagram of a diaphragm and a vibration plate according to an embodiment of the present invention;

FIG7 is a schematic diagram of the structure of a voice coil according to an embodiment of the present utility model;

Reference numerals:

1. first housing, 101. mounting hole, 102. metal sheet,

2. Magnetic circuit system, 201. Magnetic yoke, 2011. Main body, 2012. Bending portion, 20121. First extension portion, 20122. Second extension portion, 20123. Supporting protrusion, 202. Magnet assembly, 2021. Center magnet, 2022. Center magnetic plate,

3. Vibration system, 301. Diaphragm assembly, 3011. Diaphragm, 30111. External fixing portion, 30112. Folding ring portion, 30113. Internal fixing portion, 30114. Assembly protrusion, 3012. Vibration plate, 30121. Light-transmitting groove, 302. Voice coil, 3021. Main body, 3022. Lead portion, 30221. Suspended portion, 30222. Fixing portion,

4. Magnetic gap, 5. Sound outlet channel, 6. Wire outlet hole, 7. External circuit, 8. First through hole, 9. Second through hole, 10. Second shell, 1001. Hollow hole, 11. Avoidance hole.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

At the same time, the meaning of "and/or" or "and/or" appearing in the full text includes three options. Taking "A and/or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

The utility model provides a sound module. It can be understood that the sound module is applied to electronic devices, such as mobile phones, speakers, computers, headphones, watches, televisions or tablet computers, etc., which are not limited here.

As shown in FIG. 1 to FIG. 3 , the sound module according to the embodiment of the utility model includes a first shell 1 , a magnetic circuit system 2 , and a vibration system 3 arranged corresponding to the magnetic circuit system 2 .

The vibration system 3 includes a diaphragm assembly 301 and a voice coil 302 mounted on the diaphragm assembly 301;

The magnetic circuit system 2 includes a magnetic yoke 201 and a magnet assembly 202 disposed on the magnetic yoke 201. The magnetic yoke 201 includes a main body 2011 and a bent portion 2012 bent and extended from the main body 2011 toward the diaphragm assembly 301. The magnet assembly 202 is disposed on the main body 2011, and a magnetic gap 4 is formed between the bent portion 2012 and the magnet assembly 202. As shown in FIG2 , the side of the voice coil 302 facing away from the diaphragm assembly 301 is inserted into the magnetic gap 4. When powered on, the voice coil 302 vibrates up and down under the magnetic field force of the magnetic flux lines in the magnetic gap 4, thereby driving the diaphragm assembly 301 to vibrate and produce sound. The outer periphery of the diaphragm assembly 301 is fixed to the bent portion 2012 and is sandwiched between the first shell 1 and the bent portion 2012.

Thus, through the above arrangement, a magnetic gap 4 is formed between the bent portion 2012 of the magnetic yoke 201 and the magnet assembly 202, and the bent portion 2012 can play the role of the side magnetic circuit of the magnetic circuit system 2, thereby making the structural design of the magnetic circuit system 2 simpler and saving production costs. In addition, the bent portion 2012 of the magnetic yoke 201 also plays the role of a shell, so that the outer peripheral edge of the diaphragm assembly 301 can be directly fixed on the bent portion 2012. At the same time, the clamping structure design between the first shell 1 and the bent portion 2012 makes the diaphragm assembly 301 more firmly installed. The first shell 1 and the magnetic yoke 201 cooperate to define an internal sound cavity. The first shell 1 is provided with a sound outlet channel 5 connected to the internal sound cavity. Therefore, the magnetic yoke 201 can be directly combined with the first shell 1 as a shell, and finally combined into a sound module. The above design simplifies the process flow, reduces the station design in the process, reduces the cost of the process and the cost of materials, and improves the competitive advantage of the product in the market.

As shown in FIGS. 1 to 4 , in some embodiments of the present invention, the bending portion 2012 includes a first extension portion 20121 and a second extension portion 20122, the first extension portion 20121 extends along the vibration direction of the vibration system 3, the second extension portion 20122 extends in a direction away from the magnet assembly 202, and the outer periphery of the diaphragm assembly 301 is fixed to the second extension portion 20122. As can be seen from the above, the first extension portion 20121 is extended along the vibration direction of the vibration system 3, and the first extension portion 20121 acts as The structure of the side magnetic circuit is formed, and a magnetic gap 4 is formed between the side magnetic circuit component and the magnet assembly 202, so that the sound module no longer needs to be equipped with a side magnetic circuit component, thereby reducing material costs. The second extension portion 20122 is extended in a direction away from the magnet assembly 202. At the same time, the outer peripheral edge of the diaphragm assembly 301 is fixed on the second extension portion 20122. The second extension portion 20122 serves as the structure of the outer shell and can be directly connected to the diaphragm assembly 301, thereby reducing the steps of gluing and loading materials required when assembling the outer shell in the traditional process, thereby reducing the cost of the process.

In addition, in this embodiment, an integrated molding structure is preferably adopted between the first extension portion 20121, the second extension portion 20122 and the main body portion 2011. The design of the integrated structure can simplify the process flow and reduce costs.

In the specific embodiment shown in FIG. 2 , a support protrusion 20123 is further provided at one end of the second extension portion 20122 away from the first extension portion 20121, and the support protrusion 20123 extends relative to the second extension portion 20122 toward the direction close to the diaphragm assembly 301, the outer periphery of the diaphragm assembly 301 is fixed to the support protrusion 20123, the first housing 1 is covered with the support protrusion 20123, and the diaphragm assembly 301 is sandwiched between the first housing 1 and the support protrusion 20123. Thus, not only is it convenient to install and fix the diaphragm assembly 301, but the support protrusion 20123 can also define the vibration space of the diaphragm assembly 301, and can prevent the diaphragm assembly 301 from colliding with the second extension portion 20122 in sound generation.

As shown in FIGS. 1 , 4 and 7 , in the embodiment of the utility model, the voice coil 302 includes a main body 3021 and a lead part 3022. The main body 3021 is located in the magnetic gap 4. When powered on, the main body 3021 vibrates in the magnetic gap 4. The lead part 3022 includes a suspended part 30221 and a fixed part 30222. The two ends of the suspended part 30221 are respectively connected to the main body 3021 and the fixed part 30222. By designing the suspended part 30221 between the main body 3021 and the fixed part 30222, the pulling force on the fixed part 30222 when the main body 3021 vibrates is reduced, thereby avoiding In order to avoid the problem of poor contact or even breakage, the fixed part 30222 is supported and fixed on the second extension part 20122, and the bent part 2012 is provided with a wire outlet hole 6. The end of the fixed part 30222 away from the suspended part 30221 passes through the wire outlet hole 6 and is electrically connected to the external circuit 7. By designing the wire outlet hole 6 on the bent part 2012, the fixed part 30222 of the voice coil 302 can pass through the wire outlet hole 6 and be led out to the outside of the magnetic yoke 201, and can be directly electrically connected to the external circuit 7. Compared with the traditional structure in which the voice coil is welded to the centering support plate inside the shell, the process technology is simpler and the assembly is more convenient.

In addition, in this embodiment, in order to facilitate the positioning of the voice coil 302 during the assembly process, a plurality of avoidance holes 11 are provided between the main body 2011 and the first extension portion 20121. The avoidance holes 11 are provided to facilitate the insertion of the positioning tool during assembly, and facilitate the positioning of the voice coil 302. The avoidance holes 11 may be provided at the four corners of the voice coil 302, or at the long and short straight sides of the voice coil 302. Similarly, the avoidance holes 11 may be provided at the inner side of the voice coil 302, and/or at the outer side of the voice coil 302. The specific position may be adjusted according to the design requirements of the positioning.

Optionally, the positions of the two avoidance holes 11 correspond to the suspended portion 30221 of the voice coil 302, and the suspended portion 30221 is avoided, thereby preventing the suspended portion 30221 from colliding with the main body 2011 when the voice coil 302 vibrates, preventing noise and improving the sound effect.

As shown in FIG. 2 , FIG. 3 and FIG. 5 , in some embodiments of the present utility model, the magnet assembly 202 includes a central magnet 2021 and a central magnetic plate 2022 disposed on the central magnet 2021. The central magnetic plate 2022 and the central magnet 2021 serve as a central magnetic circuit and form a magnetic gap 4 with the first extension 20121 of the magnetic yoke 201. The central magnet 2021 is mounted on the body 2011, and a first through hole 8 is disposed on the central magnet 2021. It can be understood that in the magnetic circuit system 2, the contribution value of the middle position of the central magnet 2021 to the magnetic field strength is relatively small. Therefore, by providing the first through hole 8 on the central magnet 2021, the overall weight of the magnetic circuit system 2 can be reduced without affecting the magnetic field strength, which plays a role in reducing the weight of the sound module and can also reduce the overall cost of the magnetic circuit system 2.

As shown in FIG. 5 , in an embodiment of the utility model, a second through hole 9 connected to the first through hole 8 is provided on the central magnetic conductive plate 2022. In this embodiment, by providing the first through hole 8 on the central magnet 2021 and the second through hole 9 on the central magnetic conductive plate 2022, the magnetic circuit formed by the magnet assembly 202 is optimized and the overall weight of the product is reduced. In addition, the first through hole 8 and the second through hole 9 are usually processed by mechanical punching, and the waste after punching can be used for other products, thereby reducing production costs and resource consumption overall.

As shown in FIG. 2 , FIG. 3 and FIG. 6 , according to some embodiments of the present invention, the diaphragm assembly 301 includes a diaphragm 3011 and a vibration plate 3012 , wherein:

The diaphragm 3011 includes an outer fixing portion 30111, a folding ring portion 30112 and an inner fixing portion 30113 which are arranged in sequence from the outside to the inside. Specifically, the folding ring portion 30112 can be a structure that bulges upward or a structure that is recessed downward. The outer fixing portion 30111, the folding ring portion 30112 and the inner fixing portion 30113 are an integrated structure. The outer fixing portion 30111 is fixed to the bending portion 2012. The inner fixing portion 30113 is connected to the vibration plate 3012. The top of the voice coil 302 is connected to the diaphragm 3011. The vibration plate The outer wall of 3012 is provided with a light-transmitting groove 30121 arranged opposite to the top of the voice coil 302. Due to the structural design of the magnetic yoke 201 in the utility model, the process of connecting the voice coil 302 and the diaphragm 3011 with the light-curing adhesive cannot be fixed by light from the bottom of the voice coil 302. By setting the light-transmitting groove 30121, it is possible to irradiate downward from directly above the vibration plate 3012, and the irradiated light passes through the light-transmitting groove 30121 to reach between the voice coil 302 and the diaphragm 3011, thereby achieving fixation of the voice coil 302.

As shown in FIG. 3 and FIG. 6 , in the embodiment of the utility model, the diaphragm 3011 is a light-transmitting material, and the top of the voice coil 302 is connected to the diaphragm 3011 by light-curing adhesive. The use of light-transmitting material facilitates the irradiation of light through the diaphragm 3011 to reach the light-curing adhesive connection position of the voice coil 302.

As shown in FIG. 6 , the inner peripheral wall of the inner fixing portion 30113 is provided with an assembly protrusion 30114, and the assembly protrusion 30114 is arranged corresponding to the light-transmitting groove 30121. In this embodiment, the top of the assembly protrusion 30114 is arranged corresponding to the light-transmitting groove 30121, and the bottom is arranged opposite to the top of the voice coil 302, so that the voice coil 302 can be installed on the diaphragm 3011 by light-curing adhesive.

In addition, the inner wall of the inner fixing portion 30113 can also be flush with the inner side of the assembly protrusion 30114 around the circumference to form a complete inner ring structure. This method can also achieve the fixation of the voice coil 302 and the diaphragm 3011 by the photocuring adhesive, but there is a defect. Since the inner wall of the inner fixing portion 30113 extends inward as a whole, the size of the central magnetic conductive plate 2022 will be reduced accordingly, which will affect the performance of the product.

As shown in FIG. 1 to FIG. 3 , according to some embodiments of the present invention, the first shell 1 is an integrally formed plastic structure, thereby making it easy to form the first shell 1 in a specific shape and reducing the difficulty of processing.

Alternatively, a mounting hole 101 corresponding to the magnetic yoke 201 is provided in the cavity of the first shell 1, and a metal sheet 102 is installed on the side of the mounting hole 101 away from the magnetic yoke 201. By providing the mounting hole 101 in the cavity of the first shell 1, and installing the metal sheet 102 on the side of the mounting hole 101 away from the magnetic yoke 201, the metal sheet 102 seals the mounting hole 101. Since the overall structural strength of the metal sheet 102 is greater than that of the plastic shell, a thinning design can be performed while meeting the structural strength requirements, thereby reducing the overall thickness of the sound module, meeting the requirements of lightweight design.

As shown in Figures 2 and 3, in some embodiments of the present invention, the sound module also includes a second shell 10, which is arranged corresponding to the first shell 1 and is located on opposite sides of the magnetic yoke 201. The second shell 10 is provided with a hollow hole 1001 arranged corresponding to the magnetic yoke 201, and a part of the magnetic yoke 201 is exposed through the hollow hole 1001. In this embodiment, the hollow hole 1001 is provided to facilitate the positioning of the voice coil 302 by the positioning tool. At the same time, through the setting of the hollow hole 1001 structure, the magnetic yoke 201 is partially exposed, thereby reducing the overall height of the sound module and facilitating heat dissipation.

In addition, the second shell 10 may not be provided with the hollow hole 1001 , so that the magnetic yoke 201 is entirely wrapped in the cavity formed by the first shell 1 and the second shell 10 .

The utility model also proposes an electronic device, which includes a sound module. The specific structure of the sound module refers to the aforementioned embodiment. Since the electronic device adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

It is understandable that the electronic device may be a mobile phone, a speaker, a computer, a headset, a watch, a television or a tablet computer, etc., and is not limited here.

It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and/or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims (10)

1. A sound module, characterized in that it comprises a first shell, a magnetic circuit system and a vibration system arranged corresponding to the magnetic circuit system; The vibration system includes a diaphragm assembly and a voice coil mounted on the diaphragm assembly; The magnetic circuit system includes a magnetic yoke and a magnet assembly arranged on the magnetic yoke, the magnetic yoke includes a main body and a bent portion bent and extended from the main body toward the diaphragm assembly, the magnet assembly is arranged on the main body, a magnetic gap is formed between the bent portion and the magnet assembly, the side of the voice coil facing away from the diaphragm assembly is inserted into the magnetic gap, the outer periphery of the diaphragm assembly is fixed to the bent portion and clamped between the first shell and the bent portion, the first shell and the magnetic yoke cooperate to define an internal sound cavity, and the first shell is provided with a sound outlet channel connected to the internal sound cavity. 2. A sound module as described in claim 1, characterized in that: the bending portion includes a first extension portion and a second extension portion, the first extension portion extends along the vibration direction of the vibration system, the second extension portion extends in a direction away from the magnet assembly, and the outer periphery of the diaphragm assembly is fixed to the second extension portion. 3. A sound module as described in claim 2, characterized in that: the voice coil includes a main body and a lead part, the main body is located in the magnetic gap, the lead part includes a suspended part and a fixed part, two ends of the suspended part are respectively connected to the main body and the fixed part, the fixed part is supported and fixed to the second extension part, the bent part is provided with a wire outlet hole, and one end of the fixed part away from the suspended part passes through the wire outlet hole to be electrically connected to the external circuit. 4. A sound module as described in claim 1, characterized in that: the magnet assembly includes a central magnet and a central magnetic conductive plate arranged on the central magnet, the central magnet is installed on the main body, and a first through hole is provided on the central magnet. 5. A sound module as described in claim 4, characterized in that: a second through hole connected to the first through hole is opened on the central magnetic conductive plate. 6. A sound module according to claim 1, characterized in that: the diaphragm assembly comprises a diaphragm and a vibration plate, wherein: The diaphragm includes an outer fixing part, a folding ring part and an inner fixing part which are arranged in sequence from the outside to the inside, the outer fixing part is fixed to the bending part, the inner fixing part is connected to the vibration plate, the top of the voice coil is connected to the diaphragm, and the outer peripheral wall of the vibration plate is provided with a light-transmitting groove which is arranged opposite to the top of the voice coil. 7. A sound module according to claim 6, characterized in that: the diaphragm is made of a light-transmitting material, and the top of the voice coil is connected to the diaphragm by a light-curing adhesive; An inner peripheral wall of the inner fixing portion is provided with an assembly protrusion, and the assembly protrusion is arranged corresponding to the light-transmitting groove. 8. The sound module according to claim 1, wherein the first housing is an integrally formed plastic structure; Alternatively, a mounting hole corresponding to the magnetic yoke is provided in the cavity of the first shell, and a metal sheet is installed on a side of the mounting hole away from the magnetic yoke. 9. A sound module as described in any one of claims 1-8, characterized in that: the sound module also includes a second shell, the second shell is arranged corresponding to the first shell and is located on opposite sides of the magnetic yoke, the second shell is provided with a hollow hole arranged corresponding to the magnetic yoke, and part of the magnetic yoke is exposed through the hollow hole. 10. An electronic device, characterized in that: the electronic device comprises the sound module according to any one of claims 1-9.