Sound production monomer and sound production module

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and particularly relates to a sounding monomer and a sounding module, the sounding monomer comprises a shell, a vibration system accommodated in the shell and a magnetic circuit system matched with the vibration system, the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a voice coil and a diaphragm assembly, and the diaphragm assembly is arranged in the shell. The vibrating diaphragm assembly comprises a vibrating diaphragm and a vibrating plate combined in the central area of the vibrating diaphragm, a first protrusion is arranged at the position, corresponding to the magnetic gap, of the vibrating plate, a second protrusion is arranged at the position, corresponding to the first protrusion, of the vibrating diaphragm, the first protrusion is embedded in the second protrusion, one end of the voice coil is connected to the second protrusion, and the other end of the voice coil is located in the magnetic gap. The above structure enables the total height of the projections in the vibration assembly to break through the thickness limit of the vibration plate and to have a larger range, thereby enabling the insertion depth of the voice coil connected to the second projection in the magnetic gap to have a larger adjustment range, and improving the performance of the sound production monomer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroacoustic conversion, and specifically relates to a sound-generating monomer and a sound-generating module. Background Art

[0002] The position of the speaker voice coil in the magnetic gap directly determines the performance of the speaker and the whole machine. In the related art, the vibration plate is usually stretched to make it bulge toward one side of the magnetic circuit system so as to adhere to the voice coil, thereby increasing the insertion depth of the voice coil in the magnetic gap. However, due to the limitation of material flow, the current stretching height of the vibration plate is basically about 4 times the material thickness. For example, the maximum stretching height of a 0.05mm thick aluminum-magnesium alloy vibration plate is 0.2mm. Once the stretching height is too high, due to the limitation of material flow, the thickness of the bulge position becomes thinner, which is not only easy to tear but also easy to deform. Therefore, the above improvement has limited adjustment of the voice coil position and cannot meet the application needs.

[0003] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0004] The utility model aims to provide a sound generating unit and a sound generating module, which can adjust the insertion depth of the voice coil in the magnetic gap.

[0005] The utility model provides a sound-emitting unit in a first aspect, comprising a shell and a vibration system accommodated in the shell, and also comprising a magnetic circuit system accommodated in the shell and cooperating with the vibration system, wherein the magnetic circuit system has a magnetic gap, wherein the vibration system comprises a voice coil and a diaphragm assembly, the diaphragm assembly comprises a diaphragm and a vibration plate combined with a central area of ​​the diaphragm, the vibration plate is provided with a first protrusion at a position corresponding to the magnetic gap, the diaphragm is provided with a second protrusion corresponding to the first protrusion, the first protrusion is embedded in the second protrusion, and one end of the voice coil is connected to the second protrusion, and the other end is located in the magnetic gap.

[0006] The sound-emitting unit provided by the utility model may also have the following additional technical features:

[0007] In a specific implementation manner of the present invention, the vibration plate and the vibration membrane are integrally injection molded or hot-pressed.

[0008] In a specific implementation manner of the present invention, the vibration plate and the vibration membrane are integrally injection-molded, and the outer edge of the vibration plate is wrapped around the vibration membrane.

[0009] In a specific implementation manner of the present invention, the thickness of the second protrusion is set in the range of 0.1mm-0.6mm.

[0010] In a specific implementation manner of the present invention, the vibration plate is made of aluminum or aluminum-magnesium alloy.

[0011] In a specific implementation manner of the present invention, the diaphragm is made of silicone.

[0012] In a specific implementation manner of the present invention, the first protrusion is a discontinuous annular structure or a continuous annular structure.

[0013] In a specific embodiment of the utility model, the magnetic circuit system includes: a magnetic yoke, a central magnetic portion and a side magnetic portion which are arranged at intervals on the magnetic yoke and form the magnetic gap therebetween, the central magnetic portion includes a central magnet and a central magnetic plate arranged on the central magnet, the side magnetic portion includes a side magnet and a side magnetic plate arranged on the side magnet, wherein the side magnetic plate is integrally injection molded with the shell.

[0014] In a specific implementation of the utility model, a third protrusion is further provided on a side of the vibration plate close to the magnetic circuit system, and a step hole corresponding to the third protrusion is provided at the center of the central magnetic conductive plate.

[0015] In a specific implementation manner of the utility model, a centering support plate is further included, one end of the centering support plate is connected to the housing, and the other end of the centering support plate is connected to the voice coil.

[0016] The second aspect of the utility model also provides a sound module, comprising any one of the sound units described above.

[0017] The sound-generating unit provided by the embodiment of the utility model is provided with a shell and a magnetic circuit system and a vibration system which are accommodated in the shell and are provided correspondingly, so that the magnetic circuit system can be used to drive the vibration system to vibrate and generate sound. At the same time, since the vibration plate in the diaphragm assembly of the vibration system has a first protrusion, the diaphragm assembly has a second protrusion, and the first protrusion is embedded in the second protrusion when the vibration plate and the diaphragm are connected, the total height of the protrusion in the vibration assembly can be increased, so that the total height of the protrusion in the vibration assembly can break through the thickness limit of the vibration plate and have a larger range, thereby making the insertion depth of the voice coil connected to the second protrusion in the magnetic gap have a larger adjustment range, thereby improving the performance of the sound-generating unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional view of the sound-generating unit of the utility model;

[0020] Figure 2 This is a structural exploded diagram of the sound-generating unit of the utility model;

[0021] Figure 3 It is a cross-sectional view of the diaphragm assembly in the embodiment of the utility model;

[0022] Figure 4 A three-dimensional diagram of a diaphragm assembly from one perspective in an embodiment of the utility model;

[0023] Figure 5 It is a stereoscopic diagram of the diaphragm assembly from another perspective in the embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 100-sound unit;

[0026] 10-housing, 20-vibration system, 21-voice coil, 22-diaphragm assembly, 23-vibration plate, 231-first protrusion, 232-third protrusion, 24-diaphragm, 241-second protrusion, 242-second mounting portion, 243-folding ring portion, 244-first mounting portion;

[0027] 30-magnetic circuit system, 31-magnetic yoke, 32-center magnet, 33-side magnet, 34-center magnetic plate, 35-side magnetic plate;

[0028] 40-Centering support. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0030] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0031] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0032] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0033] like Figure 1-5As shown, an embodiment of the utility model provides a sound-emitting unit 100, including a shell 10 and a vibration system 20 accommodated in the shell 10, and also including a magnetic circuit system 30 accommodated in the shell 10 and cooperating with the vibration system 20, the magnetic circuit system 30 has a magnetic gap, wherein the vibration system 20 includes a voice coil 21 and a diaphragm assembly 22, the diaphragm assembly 22 includes a diaphragm 24 and a vibration plate 23 combined with the central area of ​​the diaphragm 24, the vibration plate 23 is provided with a first protrusion 231 at the position corresponding to the magnetic gap, the diaphragm 24 is provided with a second protrusion 241 at one end close to the magnetic circuit system 30, the first protrusion 231 is embedded in the second protrusion 241, and one end of the voice coil 21 is connected to the second protrusion 241, and the other end is located in the magnetic gap.

[0034] Specifically, the housing 10 is a frame structure, and specifically includes a first end and a second end that are arranged opposite to each other, the vibration system 20 is connected to the first end of the housing 10, the magnetic circuit system 30 is connected to the second end of the housing 10, and the voice coil 21 of the vibration system 20 is arranged in the magnetic gap of the magnetic circuit system 30, so that when the voice coil 21 is powered on, it can vibrate and make sound in a direction perpendicular to the vibration system 20 under the drive of the magnetic circuit system 30. Optionally, the housing 10 can be formed as a circular frame. In this embodiment, the housing 10 is a rectangular frame.

[0035] The vibration system 20 includes a voice coil 21 and a diaphragm assembly 22, wherein the diaphragm assembly 22 includes a diaphragm 24 and a vibration plate 23, wherein the diaphragm 24 includes a first mounting portion 244, a folding ring portion 243, and a second mounting portion 242, all of which are arranged in an annular shape, wherein the outer periphery of the folding ring portion 243 is connected to the first mounting portion 244, and the inner periphery is connected to the second mounting portion 242, and the outer periphery of the vibration plate 23 is connected to the second mounting portion 242. The diaphragm assembly 22 is connected to the housing 10 via the first mounting portion 244, and optionally, the first mounting portion 244 is connected to the housing by bonding.

[0036] The diaphragm 24 is arranged in a square shape, and the first mounting portion 244, the folding ring portion 243 and the second mounting portion 242 of the diaphragm 24 are an integrally formed structure. The folding ring portion 243 can be a convex structure facing upward or downward. In this embodiment, the folding ring portion 243 is a convex structure facing downward. In order to increase the connection area between the first mounting portion 244 and the housing 10, the first mounting portion 244 is also formed with a downward flange, and the flange is connected and fixed to the outer wall of the housing 10.

[0037] The vibration plate 23 is formed with a first protrusion 231 at a position corresponding to the magnetic gap, and the second mounting portion 242 of the diaphragm 24 is formed with a second protrusion 241 corresponding to the first protrusion, and when the vibration plate 23 is adapted and connected to the second mounting portion 242, the first protrusion 231 is embedded in the second protrusion 241, so that the total height of the protrusions in the vibration assembly can be increased, so that the total height of the protrusions in the vibration assembly can exceed the thickness limit of the vibration plate 23 and have a larger range. Since the voice coil 21 is connected to the second protrusion 241, when the total height of the protrusions in the vibration assembly exceeds the thickness limit of the vibration plate 23, the adjustment range of the insertion depth of the voice coil 21 in the magnetic gap is also correspondingly increased, and since the increase in the insertion range of the voice coil 21 in the magnetic gap can improve the performance of the sound unit 100, the above-mentioned arrangement can improve the performance of the sound unit 100.

[0038] The sound-generating monomer 100 provided by the embodiment of the utility model is provided with a housing 10 and a magnetic circuit system 30 and a vibration system 20 which are accommodated in the housing 10 and are provided correspondingly, so that the magnetic circuit system 30 can be used to drive the vibration system 20 to vibrate and generate sound. At the same time, since the vibration plate 23 in the diaphragm assembly 22 of the vibration system 20 has a first protrusion 231, the diaphragm assembly 22 has a second protrusion 241, and the first protrusion 231 is embedded in the second protrusion 241 when the vibration plate 23 and the diaphragm 24 are connected, the total height of the protrusion in the vibration assembly can be increased, so that the total height of the protrusion in the vibration assembly can break through the thickness limit of the vibration plate 23 and have a larger range, thereby making the insertion depth of the voice coil 21 connected to the second protrusion 241 in the magnetic gap have a larger adjustment range, thereby improving the performance of the sound-generating monomer 100.

[0039] In one embodiment, the vibration plate 23 and the vibration membrane 24 are integrally injection molded or hot-pressed.

[0040] In one embodiment, the vibration plate 23 and the diaphragm 24 are integrally injection molded, and the outer edge of the vibration plate 23 is wrapped around the diaphragm 24. Specifically, the upper and lower edges of the outer edge of the vibration plate 23 are wrapped around the second mounting portion 242, so that during the reliability test, the diaphragm 24 can play a buffering role and reduce the risk of the vibration plate 23 cracking.

[0041] In one embodiment, the thickness of the second protrusion 241 is set in the range of 0.1mm-0.8mm. Specifically, the first protrusion 231 is embedded in the second protrusion 241, so that the thickness of the second protrusion 241 is the thickness of the protrusion in the diaphragm assembly 22, and specifically, its thickness can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm.

[0042] In one embodiment, a third protrusion 232 is further provided in the middle of the vibration plate 23 on one side close to the magnetic circuit system 30. This can improve the strength of the vibration plate 23 and further improve the reliability of the sound unit 100.

[0043] In one embodiment, the first protrusion 231 is a discontinuous ring structure or a continuous ring structure. The shape of the second protrusion 241 is the same as that of the first protrusion 231. Preferably, both are continuous ring structures, which can increase the connection area with the voice coil 21 and further increase the connection strength with the voice coil 21.

[0044] In one embodiment, the vibration plate 23 is made of aluminum or aluminum-magnesium alloy. In this way, the vibration plate 23 is light in weight and high in strength, further improving the sensitivity and sound performance of the sound unit 100.

[0045] In one embodiment, the diaphragm 24 is made of silicone material, which has the characteristics of low glass transition temperature, high elasticity, stable performance, and high fatigue resistance.

[0046] In one embodiment, the magnetic circuit system 30 includes: a magnetic yoke 31, a central magnetic portion and a side magnetic portion which are arranged at intervals on the magnetic yoke 31 and form a magnetic gap therebetween, the central magnetic portion includes a central magnet 32 ​​and a central magnetic plate 34 arranged on the central magnet 32, the side magnetic portion includes a side magnet 33 and a side magnetic plate 35 arranged on the side magnet 33, wherein the side magnetic plate 35 is integrally injection molded with the shell 10.

[0047] Specifically, the magnetic yoke 31 can be selected as a structure such as a magnetic plate or a magnetic basin frame, and the side thereof close to the vibration system 20 is fixedly connected with a central magnet 32 ​​and a plurality of side magnets 33 arranged around the central magnet 32, wherein the central magnet 32 ​​and the side magnets 33 are arranged at intervals. Optionally, the central magnet 32 ​​is in a bar shape and is arranged parallel to the length direction of the magnetic yoke, and there are four side magnets 33, which are arranged around the central magnet 33. Optionally, the central magnet 32 ​​and the side magnets 33 are connected with magnetic bonding.

[0048] The central magnet 32 ​​is fixedly connected to a central magnetic plate 34 on the other side of the magnetic yoke 31, and the central magnetic plate 34 has the same structural profile as the central magnet 32. The side magnets 33 are fixedly connected to a side magnetic plate 35 on the other side of the magnetic yoke 31, and the side magnetic plate 35 has the same structural profile as the corresponding side magnets 33. The central magnetic plate 34 is bonded to the central magnet 32, and the side magnetic plate 35 is bonded to the side magnets 33.

[0049] The side magnetic conductive plate 35 and the frame are integrally formed by injection molding, which can enhance the connection strength between the magnetic circuit system 30 and the housing 10 .

[0050] In one embodiment, a stepped hole corresponding to the third protrusion 232 is provided at the center of the central magnetic conductive plate 34. The stepped hole is used to avoid the third protrusion 232 of the vibration plate 23, so as to provide a larger vibration space for the diaphragm assembly 22.

[0051] In one embodiment, the sound unit 100 further includes a centering support 40 , one end of the centering support 40 is connected to the housing 10 , and the other end of the centering support 40 is connected to the voice coil 21 .

[0052] Specifically, the centering support plate 40 includes a first connecting portion, a vibration arm, and a second connecting portion which are connected in sequence, wherein a plurality of centering support plates 40 are arranged around the voice coil 21, and the first connecting portion is connected to the second side surface of the shell 10, and the second is connected to the other end of the voice coil 21 relative to the diaphragm assembly 22, thereby reducing the eccentric vibration of the voice coil 21.

[0053] Optionally, there are two centering support plates 40, which are disposed at opposite ends of the voice coil 21, and two vibration arms and two second connection parts are symmetrically arranged on the first connection part of each centering support plate 40, so that connection with the four corners of the voice coil 21 can be achieved.

[0054] Optionally, the magnetic yoke 31 is provided with an avoidance hole for avoiding the vibration arm and the second connecting part.

[0055] The second aspect of the present invention also provides a sound module, which includes the above-mentioned sound monomer 100. Specifically, the structure of the sound monomer 100 refers to the above-mentioned embodiment. Since the sound module includes the sound monomer 100 in the above-mentioned embodiment, it must also have the beneficial effects of the above-mentioned sound monomer 100, which will not be repeated here one by one.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sound-emitting unit, characterized in that: The invention comprises a shell and a vibration system contained in the shell, and also comprises a magnetic circuit system contained in the shell and cooperating with the vibration system, wherein the magnetic circuit system has a magnetic gap, wherein The vibration system includes a voice coil and a diaphragm assembly, the diaphragm assembly includes a diaphragm and a vibration plate combined with the central area of ​​the diaphragm, the vibration plate is provided with a first protrusion corresponding to the position of the magnetic gap, the diaphragm is provided with a second protrusion corresponding to the first protrusion, the first protrusion is embedded in the second protrusion, and one end of the voice coil is connected to the second protrusion, and the other end is located in the magnetic gap.

2. The sound-emitting unit according to claim 1, characterized in that: The vibration plate and the vibration membrane are integrally formed by injection molding or hot pressing.

3. The sound-emitting unit according to claim 1, characterized in that: The vibration plate and the vibration membrane are integrally injection-molded, and the outer edge of the vibration plate is wrapped around the vibration membrane.

4. The sound-emitting unit according to claim 1, characterized in that: The thickness of the second protrusion is set in the range of 0.1mm-0.8mm.

5. The sound-emitting unit according to claim 1, characterized in that: The vibration plate is made of aluminum or aluminum-magnesium alloy; And / or, the diaphragm is made of silicone.

6. The sound-emitting unit according to claim 1, characterized in that: The first protrusion is a discontinuous annular structure or a continuous annular structure.

7. The sound-emitting unit according to claim 1, characterized in that: The magnetic circuit system includes: a magnetic yoke, a central magnetic portion and a side magnetic portion which are arranged at intervals on the magnetic yoke and form the magnetic gap therebetween, the central magnetic portion includes a central magnet and a central magnetic plate arranged on the central magnet, the side magnetic portion includes a side magnet and a side magnetic plate arranged on the side magnet, wherein the side magnetic plate is integrally injection molded with the shell.

8. The sound-emitting unit according to claim 7, characterized in that: A third protrusion is also provided on one side of the vibration plate close to the magnetic circuit system, and a step hole corresponding to the third protrusion is provided at the center of the central magnetic conductive plate.

9. The sound-emitting unit according to claim 1, characterized in that: It also includes a centering support plate, one end of which is connected to the shell, and the other end of which is connected to the voice coil.

10. A sound module, characterized in that: It comprises the sound-emitting unit as described in any one of claims 1 to 9.

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