Sound production monomer and electronic equipment

Abstract

The utility model relates to the technical field of electro-acoustic conversion, and provides a sounding monomer and electronic equipment, and the sounding monomer comprises a housing, a vibration system and a front cover. The vibrating system comprises a vibrating diaphragm, the outer periphery of the vibrating diaphragm is fixed to the shell, the shell is covered with the front cover, the vibrating diaphragm is located between the front cover and the shell, the outer periphery of the vibrating diaphragm is bent and extends in the direction close to the front cover to form a first flanging part, and the outer periphery of the front cover is bent and extends in the direction close to the vibrating diaphragm to form a second flanging part. The first flanging part is connected with the second flanging part in an attached mode. According to the utility model, on the basis of plane bonding of the front cover, the vibrating diaphragm and the shell, the structural design of side surface bonding is added, and the plane bonding size is reduced under the condition that the bonding area meeting the waterproof performance requirement is ensured, so that the product SD of the sounding monomer can be increased, and the sounding effect of the sounding monomer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic conversion, in particular to a sound-generating unit and an electronic device. Background Art

[0002] With the development of mobile phones in recent years, the space for components inside mobile phones has become increasingly limited, and the requirements for the comprehensive performance of speakers have become increasingly higher. In order to meet the sound sensitivity requirements of speakers, maximizing the effective radiation area SD of the speaker within a limited space has become another new challenge in the development of mobile phones.

[0003] The waterproof design of the speaker on the mobile phone is that the front cover is bonded to the diaphragm and then to the shell, and the bonding method of the front cover, diaphragm and shell is flat bonding. In order to ensure the waterproof performance requirements of the speaker, the flat bonding width is large. When the outer dimensions of the speaker are fixed and the internal space is limited, the optimization of the effective radiation area SD is relatively limited, and the product design requirements of large SD cannot be met, resulting in limited improvement of speaker performance. Therefore, seeking new bonding methods to improve speaker performance has become a crucial factor. Utility Model Content

[0004] In order to overcome the defects of the prior art pointed out above, the utility model provides a sound unit and an electronic device. On the basis of the plane bonding of the front cover, the diaphragm and the outer shell, a side bonding structural design is added. While ensuring the bonding area that meets the waterproof performance requirements, the plane bonding size is reduced, thereby increasing the product SD of the sound unit and improving the sound effect of the sound unit.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A sound-generating unit, comprising: a housing, a vibration system and a front cover;

[0007] The vibration system includes a diaphragm, an outer periphery of which is fixed to the outer shell, the front cover is disposed on the outer shell and the diaphragm is located between the front cover and the outer shell, the outer periphery of the diaphragm is bent and extended toward the direction close to the front cover to form a first flange portion, the outer periphery of the front cover is bent and extended toward the direction close to the diaphragm to form a second flange portion, and the first flange portion is fitly connected to the second flange portion.

[0008] According to some embodiments of the utility model, the diaphragm also includes an external fixing part, a folding ring part and an internal fixing part which are arranged in sequence from the outside to the inside, and one end of the external fixing part away from the folding ring part is connected to the first flange part, the external fixing part is fixed to the outer shell, and the external fixing part is clamped between the front cover and the outer shell.

[0009] In some embodiments of the present invention, the first flange portion, the outer fixing portion, the folding ring portion and the inner fixing portion are formed into an integrally formed structure;

[0010] And / or, the folding ring portion is recessed and extends in a direction away from the front cover.

[0011] In some embodiments of the utility model, the vibration system also includes a vibration plate, which includes a main body and a connecting portion arranged on the outer periphery of the main body, the connecting portion is formed by bending and stretching the main body in a direction away from the front cover, the connecting portion is connected to the internal fixing portion, and the internal fixing portion and the main body are located in the same plane.

[0012] According to some embodiments of the utility model, the shell is provided with a mounting step, the mounting step has a first mounting surface and a second mounting surface set at an angle, a portion of the outer periphery of the diaphragm is fixed to the first mounting surface, and the first flange portion is fixed to the second mounting surface.

[0013] In some embodiments of the present invention, a height of the second mounting surface along the vibration direction of the diaphragm is not lower than a height of the first flange portion along the vibration direction of the diaphragm.

[0014] According to some embodiments of the present invention, both the first flange portion and the second flange portion extend along the vibration direction of the diaphragm;

[0015] And / or, the first flange portion is located on the outer peripheral side of the second flange portion.

[0016] According to some embodiments of the utility model, the front cover includes a main body and a bent extension portion arranged on the outer periphery of the main body, the bent extension portion is bent relative to the main body toward a direction close to the diaphragm and extends outward relative to the main body, and the outer peripheral portion of the bent extension portion is bent toward a direction close to the diaphragm to form the second flange portion.

[0017] In some embodiments of the present invention, the main body portion, the bent extension portion and the second flange portion form an integral bent molding structure.

[0018] The utility model also provides an electronic device, which comprises a sound-emitting unit according to the above embodiment of the utility model.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] According to the sound-emitting unit of the embodiment of the utility model, it includes: a shell, a vibration system and a front cover; the vibration system includes a diaphragm, the outer periphery of the diaphragm is fixed to the shell, the front cover is arranged on the shell and the diaphragm is located between the front cover and the shell, the outer periphery of the diaphragm is bent and extended toward the direction close to the front cover to form a first flange portion, the outer periphery of the front cover is bent and extended toward the direction close to the diaphragm to form a second flange portion, the first flange portion is fitly connected with the second flange portion, by arranging the first flange portion on the outer periphery of the diaphragm, arranging the second flange portion on the outer periphery of the front cover, and the first flange portion is fitly connected with the second flange portion, by arranging the first flange portion and the second flange portion, the side bonding area between the front cover, the diaphragm and the shell is increased, and the plane bonding size is reduced while ensuring the bonding area that meets the waterproof performance requirements, thereby increasing the product SD of the sound-emitting unit, thereby improving the sound effect of the sound-emitting unit.

[0021] In summary, the utility model provides a sound unit and an electronic device. On the basis of the plane bonding of the front cover, the diaphragm and the outer shell, a side bonding structural design is added. While ensuring the bonding area that meets the waterproof performance requirements, the plane bonding size is reduced, the product SD of the sound unit is increased, and the acoustic performance of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. 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.

[0023] Figure 1 It is a schematic cross-sectional structure diagram of a sound-emitting unit according to an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the explosion structure of a sound-emitting unit according to one embodiment of the utility model;

[0025] Figure 3 is a schematic structural diagram of a diaphragm according to an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a front cover according to an embodiment of the utility model;

[0027] Reference numerals:

[0028] 1. housing, 101. mounting step, 1011. first mounting surface, 1012. second mounting surface;

[0029] 2. Vibration system, 201. diaphragm, 2011. first flange portion, 2012. outer fixing portion, 2013. folding ring portion, 2014. inner fixing portion, 202. vibration plate, 2021. main body portion, 2022. connecting portion;

[0030] 3. front cover, 301. second flange portion, 302. main body portion, 303. bent extension portion. DETAILED DESCRIPTION

[0031] 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.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) 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.

[0033] 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.

[0034] 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.

[0035] The utility model provides a sound-emitting unit. It can be understood that the sound-emitting unit is applied to electronic devices, such as mobile phones, speakers, computers, headphones, watches, televisions or tablet computers, etc., which are not limited here.

[0036] like Figure 1-Figure 4 As shown, the sound-emitting unit according to the embodiment of the utility model comprises: a housing 1, a vibration system 2 and a front cover 3;

[0037] The vibration system 2 includes a diaphragm 201, the outer periphery of which is fixed to the outer shell 1, and the front cover 3 is disposed on the outer shell 1 and the diaphragm 201 is located between the front cover 3 and the outer shell 1. Specifically, the front cover 3 can be first bonded to the diaphragm 201, and then the diaphragm 201 is bonded to the outer shell 1. The front cover 3 can protect the components inside the sound unit. The outer periphery of the diaphragm 201 is bent and extended in a direction close to the front cover 3 to form a first flange portion 2011, and the outer periphery of the front cover 3 is bent and extended in a direction close to the diaphragm 201 to form a second flange portion 301. The first flange portion 2011 is bonded and connected with the second flange portion 301. Specifically, the bonding of the first flange portion 2011 and the second flange portion 301 includes horizontal bonding in the horizontal direction and side bonding in the Z-axis direction (i.e., the vertical direction).

[0038] Specifically, the outer periphery of the diaphragm 201 is fixed to the outer shell 1, the front cover 3 is arranged on the outer shell 1 and the diaphragm 201 is located between the front cover 3 and the outer shell 1, the outer periphery of the diaphragm 201 is bent and extended in the direction close to the front cover 3 to form a first flange portion 2011, the outer periphery of the front cover 3 is bent and extended in the direction close to the diaphragm 201 to form a second flange portion 301, the first flange portion 2011 is fitly connected with the second flange portion 301, by setting the first flange portion 2011 on the outer periphery of the diaphragm 201, setting the second flange portion 301 on the outer periphery of the front cover 3, and the first flange portion 2011 is fitly connected with the second flange portion 301, the bonding area of ​​the diaphragm 201 can be increased, and the planar bonding size of the diaphragm 201 can be reduced while ensuring the bonding area that meets the waterproof performance requirements, so that the diaphragm 201 can provide more space for vibration and sound generation, thereby improving the product SD (sound radiation area) of the sound unit, thereby improving the acoustic performance of the sound unit.

[0039] like Figure 1-Figure 3 As shown, in some embodiments of the utility model, the diaphragm 201 also includes an external fixing portion 2012, a folding ring portion 2013 and an internal fixing portion 2014 which are arranged in sequence from the outside to the inside, and the end of the external fixing portion 2012 away from the folding ring portion 2013 is connected to the first flange portion 2011, the external fixing portion 2012 is fixed to the outer shell 1, and the external fixing portion 2012 is clamped between the front cover 3 and the outer shell 1. In this embodiment, the external fixing portion 2012 is horizontally bonded to the outer shell 1 and the front cover 3. Through the bonding between the external fixing portion 2012 and the outer shell 1 and the front cover 3, the diaphragm 201 is fixed while meeting the waterproof performance requirements.

[0040] like Figure 1-Figure 3As shown, in an embodiment of the utility model, the first flange portion 2011, the outer fixing portion 2012, the folding ring portion 2013 and the inner fixing portion 2014 are formed as an integrally formed structure. By adopting the integrally formed structure, the diaphragm 201 is easy to process, the process flow can be simplified, and the cost can be reduced. In this embodiment, the first flange portion 2011, the outer fixing portion 2012, the folding ring portion 2013 and the inner fixing portion 2014 are processed by integral hot pressing or integral injection molding.

[0041] In the embodiment of the utility model, the folding ring portion 2013 is recessed and extends in a direction away from the front cover 3. By designing the structure of the folding ring portion 2013 to be recessed and extends in a direction away from the front cover 3, it is avoided that when the diaphragm 201 vibrates, the folding ring portion 2013 collides with the front cover 3 and affects the sound effect of the sound unit.

[0042] like Figure 1-Figure 2 As shown, in the embodiment of the utility model, the vibration system 2 also includes a vibration plate 202, and the vibration plate 202 includes a main body 2021 and a connecting portion 2022 arranged on the outer periphery of the main body 2021, the connecting portion 2022 is formed by bending and stretching the main body 2021 in a direction away from the front cover 3, the connecting portion 2022 is connected to the inner fixing portion 2014, and the inner fixing portion 2014 and the main body 2021 are located in the same plane, and the connection portion 2022 is provided to facilitate connection and fixation with the inner fixing portion 2014, and the main body 2021 and the connecting portion 2022 are provided, the connecting portion 2022 is formed by bending and stretching the main body 2021 in a direction away from the front cover 3, and after the connecting portion 2022 is connected to the inner fixing portion 2014, the inner fixing portion 2014 and the main body 2021 are located in the same plane, and through the above-mentioned structural design, the Z-direction space occupied by the assembly structure of the diaphragm 201 and the vibration plate 202 is reduced, so that the overall structure of the sound-emitting unit is more compact.

[0043] like Figure 1-Figure 2 As shown, in some embodiments of the utility model, the housing 1 is provided with a mounting step 101, and the mounting step 101 has a first mounting surface 1011 and a second mounting surface 1012 which are arranged at an angle, a portion of the outer periphery of the diaphragm 201 is fixed to the first mounting surface 1011, and the first flange portion 2011 is fixed to the second mounting surface 1012, thereby, the first mounting surface 1011 and a portion of the outer periphery of the diaphragm 201 are horizontally bonded, and the second mounting surface 1012 and the first flange portion 2011 are laterally bonded, and the bonding effect of the diaphragm 201 can be improved by means of horizontal bonding and side bonding, and the waterproof performance requirements of the sound unit can be met. At the same time, the bonding size of the diaphragm 201 in the horizontal direction can be reduced, thereby providing more space for increasing the product SD and improving the acoustic performance of the sound unit.

[0044] like Figure 1-Figure 2As shown, in some embodiments of the utility model, the height of the second mounting surface 1012 along the vibration direction of the diaphragm 201 is not lower than the height of the first flange portion 2011 along the vibration direction of the diaphragm 201. By designing the height of the second mounting surface 1012 along the vibration direction of the diaphragm 201 to be not lower than the height of the first flange portion 2011 along the vibration direction of the diaphragm 201, it is ensured that the side surface of the first flange portion 2011 can be completely bonded to the second mounting surface 1012, and the bonding area is ensured to meet the waterproof performance requirements; in this embodiment, the height of the second mounting surface 1012 along the vibration direction of the diaphragm 201 is flush with the height of the first flange portion 2011 along the vibration direction of the diaphragm 201.

[0045] like Figure 1-Figure 2 As shown, in some embodiments of the present invention, the first flange portion 2011 and the second flange portion 301 both extend along the vibration direction of the diaphragm 201. Thus, the first flange portion 2011 and the second flange portion 301 can be completely fitted along the vibration direction of the diaphragm 201, thereby improving the sealing effect between the first flange portion 2011 and the second flange portion 301.

[0046] In the embodiment of the utility model, the first flange portion 2011 is located on the outer peripheral side of the second flange portion 301. Since the first flange portion 2011 is located on the outer peripheral side of the second flange portion 301, the extension area of ​​the diaphragm 201 in the horizontal direction can be increased, and the sound radiation area of ​​the diaphragm 201 can be improved. Moreover, the above arrangement enables the first flange portion 2011 and the second flange portion 301 to be bonded sideways, ensuring that the improved structure can meet the waterproof performance requirements. Of course, it can be understood that the first flange portion 2011 can also be arranged on the inner peripheral side of the second flange portion 301, and the arrangement can be selected according to actual use requirements, and the utility model does not make specific restrictions on this.

[0047] like Figure 1-Figure 2 and Figure 4 As shown, in some embodiments of the utility model, the front cover 3 includes a main body portion 302 and a bending extension portion 303 arranged on the periphery of the main body portion 302, the bending extension portion 303 is bent relative to the main body portion 302 in a direction close to the diaphragm 201 and extends outward relative to the main body portion 302, and the outer peripheral portion of the bending extension portion 303 is bent in a direction close to the diaphragm 201 to form a second flange portion 301, and the front cover 3 and the diaphragm 201 are bonded and fixed by the second flange portion 301. By providing the bending extension portion 303, the cavity volume inside the sound unit is increased while the assembly requirements of the sound unit are guaranteed.

[0048] like Figure 1-Figure 2 and Figure 4As shown, in the embodiment of the utility model, the main body 302, the bent extension portion 303 and the second flange portion 301 are formed into an integral bent structure. By bending the front cover 3 as a whole, the processing is convenient, the process flow can be simplified, and the cost can be reduced.

[0049] The utility model also proposes an electronic device, which includes a sound unit. The specific structure of the sound unit 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.

[0050] In addition, the sound unit can also be assembled with the shell into a sound module, and then installed in the electronic device in the form of a sound module.

[0051] 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.

[0052] 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

1. A sound-emitting unit, characterized in that: include: Housing, vibration system and front cover; The vibration system includes a diaphragm, an outer periphery of which is fixed to the outer shell, the front cover is disposed on the outer shell and the diaphragm is located between the front cover and the outer shell, the outer periphery of the diaphragm is bent and extended toward the direction close to the front cover to form a first flange portion, the outer periphery of the front cover is bent and extended toward the direction close to the diaphragm to form a second flange portion, and the first flange portion is fitly connected to the second flange portion.

2. The sound-emitting unit according to claim 1, characterized in that: The diaphragm also includes an external fixing portion, a folding ring portion and an internal fixing portion which are arranged in sequence from the outside to the inside. The end of the external fixing portion away from the folding ring portion is connected to the first flange portion. The external fixing portion is fixed to the outer shell, and the external fixing portion is clamped between the front cover and the outer shell.

3. The sound-emitting unit according to claim 2, characterized in that: The first flange portion, the outer fixing portion, the folding ring portion and the inner fixing portion are formed into an integrally formed structure; And / or, the folding ring portion is recessed and extends in a direction away from the front cover.

4. The sound-emitting unit according to claim 2, characterized in that: The vibration system also includes a vibration plate, which includes a main body and a connecting portion arranged on the outer periphery of the main body, the connecting portion is formed by bending and stretching the main body in a direction away from the front cover, the connecting portion is connected to the internal fixing portion, and the internal fixing portion and the main body are located in the same plane.

5. The sound-emitting unit according to claim 1, characterized in that: The housing is provided with a mounting step, and the mounting step has a first mounting surface and a second mounting surface which are arranged at an angle, a part of the outer periphery of the diaphragm is fixed to the first mounting surface, and the first flange portion is fixed to the second mounting surface.

6. The sound-emitting unit according to claim 5, characterized in that: A height of the second mounting surface along the vibration direction of the diaphragm is not lower than a height of the first flange portion along the vibration direction of the diaphragm.

7. The sound-emitting unit according to claim 1, characterized in that: The first flange portion and the second flange portion both extend along the vibration direction of the diaphragm; And / or, the first flange portion is located on the outer peripheral side of the second flange portion.

8. The sound-emitting unit according to any one of claims 1 to 7, characterized in that: The front cover includes a main body and a bent extension portion arranged on the outer periphery of the main body, the bent extension portion is bent relative to the main body toward the direction close to the diaphragm and extends outward relative to the main body, and the outer peripheral portion of the bent extension portion is bent toward the direction close to the diaphragm to form the second flange portion.

9. The sound-emitting unit according to claim 8, characterized in that: The main body, the bent extension and the second flange portion form an integral bent structure.

10. An electronic device, characterized in that: The electronic device comprises the sound-emitting unit according to any one of claims 1 to 9.

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