Sound production monomer and loudspeaker module

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and particularly relates to a sounding monomer and a loudspeaker module. The sound production single body comprises a frame with an accommodating space, a magnetic circuit system arranged on a first side surface of the frame and a vibration system arranged on a second side surface of the frame; the vibration system comprises a vibrating diaphragm; the vibrating diaphragm is fixedly connected to the second side surface; the second side face comprises a first matching part and a second matching part, and the distance between the first matching part and the first side face is smaller than the distance between the second matching part and the first side face. Through the above structure, the front cavity space of the sound production module formed by assembling the sound production monomers can be increased, thereby reducing the noise problem of the loudspeaker module, enabling the sound quality to be improved obviously, and facilitating the improvement of the sound effect of the whole machine.

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 loudspeaker module. Background Art

[0002] Generally, a speaker module includes a shell and a sound unit housed in the shell. The sound unit divides the space of the shell into a front cavity and a rear cavity. The performance of the front cavity is closely related to the sound performance of the speaker box. Therefore, the patency of the front cavity directly affects the sound effect of the speaker module.

[0003] In the case where the Z-axis size of the speaker module is limited, in the current speaker module, the Z-axis of the sound unit is designed to be of equal height, and when installed in the outer shell, the height size of the front cavity pipe is limited, which in turn leads to limited sound quality.

[0004] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide a sound-generating unit and a loudspeaker module, so as to improve the sound quality of the loudspeaker module.

[0006] The first aspect of the utility model provides a sound-generating unit, comprising a frame having a receiving space, and a magnetic circuit system disposed on a first side surface of the frame and a vibration system disposed on a second side surface of the frame;

[0007] The vibration system includes a diaphragm, which is fixedly connected to the second side surface; the second side surface includes a first matching portion and a second matching portion, and the distance between the first matching portion and the first side surface is smaller than the distance between the second matching portion and the first side surface.

[0008] The sound-emitting unit provided by the utility model may also have the following additional technical features:

[0009] In a specific implementation manner of the present invention, the second side surface is an inclined surface.

[0010] In a specific implementation manner of the present invention, the first matching portion and the second matching portion are formed as steps with a height difference.

[0011] In a specific implementation manner of the present invention, the height difference is greater than 0.01 mm but less than the thickness of the frame at a corresponding position of the first matching portion.

[0012] In a specific embodiment of the present invention, a first connecting portion and a second connecting portion are formed on the periphery of the diaphragm, the first connecting portion is adaptively connected to the first matching portion, and the second connecting portion is adaptively connected to the second matching portion.

[0013] In a specific implementation manner of the present utility model, the number of the first matching parts is greater than or equal to 1.

[0014] In a specific implementation manner of the present utility model, the sound-emitting unit has a long axis and a short axis, and the first matching portion is formed on the long axis and / or the short axis.

[0015] In a specific implementation of the present invention, the diaphragm further comprises a folding ring and a third connecting portion connected to the inner circumference of the folding ring; and / or

[0016] The magnetic circuit system forms a magnetic gap, and the vibration system further comprises a voice coil connected to the diaphragm, and the voice coil is inserted into the magnetic gap; and / or

[0017] The magnetic circuit system includes a magnetic yoke and a central magnet and a side magnet connected to the same side of the magnetic yoke. The magnetic yoke is located on a side of the side magnet away from the frame, and the side magnet and the central magnet are spaced apart.

[0018] A second aspect of the utility model provides a speaker module, comprising a housing and a sound-emitting unit fixed in the housing, wherein the sound-emitting unit is any one of the sound-emitting units described above.

[0019] In a specific embodiment of the present utility model, the housing has a sound outlet hole, a front cavity is formed between the housing and the diaphragm, and the front cavity is connected to the sound outlet hole;

[0020] Wherein, at least one of the first matching portions is disposed adjacent to the sound outlet hole, and a height of the front cavity close to the sound outlet hole is greater than a height of the front cavity away from the sound outlet hole.

[0021] The sound-emitting unit provided in this embodiment is provided with a frame and a magnetic circuit system arranged on the first side of the frame and a vibration system arranged on the second side of the frame. In this way, the magnetic circuit system can be used to drive the vibration system to vibrate, thereby realizing the sound-emitting function of the sound-emitting unit. At the same time, the connection position between the diaphragm and the frame in the vibration system is set, so that the thickness of a part of the sound-emitting unit is thinned. When the sound-emitting unit is installed in the outer shell of the speaker module, the thinned thickness area can increase the space of the front cavity channel after the module is assembled, thereby reducing the noise problem of the speaker module, and the sound quality is significantly improved, which helps to improve the sound effect of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a cross-sectional structural diagram of the sound-emitting monomer in the embodiment of the utility model;

[0024] Figure 2 for Figure 1 Exploded diagram of

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the middle frame and diaphragm;

[0026] Figure 4 This is the front view of the sound unit.

[0027] Description of reference numerals:

[0028] 100-sound unit;

[0029] 10-frame, 11-first matching portion, 12-second matching portion;

[0030] 20-vibration system, 21-diaphragm, 22-first connection part, 23-second connection part, 24-folding ring, 25-third connection part, 26-vibration plate, 27-voice coil, 28-centering support plate;

[0031] 30-magnetic circuit system, 31-magnetic yoke, 32-center magnet, 33-side magnet, 34-center magnetic plate, 35-side magnetic plate. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Reference Figure 1-Figure 4 A first aspect of the utility model provides a sound-emitting unit 100, which is used to be assembled in a housing to form a speaker module.

[0037] Among them, the sound unit 100 includes a frame 10 with a receiving space, and a magnetic circuit system 30 arranged on the first side of the frame 10 and a vibration system 20 arranged on the second side of the frame 10; the vibration system 20 includes a diaphragm 21, and the diaphragm 21 is connected to the second side; the second side includes a first matching part 11 and a second matching part 12; wherein the distance between the first matching part 11 and the first side is smaller than the distance between the second matching part 12 and the first side.

[0038] Specifically, the frame 10 is formed into a frame structure having a first side surface and a second side surface that are oppositely disposed. The magnetic circuit system 30 is connected to the first side surface of the frame 10, and the vibration system 20 is fixedly connected to the second side surface of the frame 10, and in a power-on state, the vibration system 20 can drive the magnetic circuit system 30 to vibrate to produce sound.

[0039] The vibration system 20 includes a diaphragm 21 for connecting to the second side of the frame 10, so that the vibration system 20 can be connected to the second side of the frame 10 through the diaphragm 21. The second side of the frame 10 is respectively formed with a first matching portion 11 and a second matching portion 12, and the shape of the outer periphery of the diaphragm 21 is adapted to the first matching portion 11 and the second matching portion 12, thereby realizing the connection between the diaphragm 21 and the second side.

[0040] Optionally, the diaphragm 21 may be connected to the second side surface by bonding, welding, or the like.

[0041] Since the thickness of the diaphragm 21 is basically the same, when the distance between the first matching portion 11 and the first side surface is smaller than the distance between the second matching portion 12 and the first side surface, in the sound unit 100, the thickness of the area corresponding to the first matching portion 11 is smaller than the thickness of the area corresponding to the second matching portion 12. In this way, when the sound unit 100 is installed in the housing of the speaker module, the corresponding part of the first connecting portion 22 can form a thinning of the thickness of the sound unit 100, so that the space of the front cavity channel can be increased after the module is assembled, thereby reducing the noise problem of the speaker module, significantly improving the sound quality, and helping to improve the sound effect of the whole machine.

[0042] The sound-emitting unit 100 provided in this embodiment is provided with a frame 10 and a magnetic circuit system 30 provided on the first side of the frame 10 and a vibration system 20 provided on the second side of the frame 10. In this way, the magnetic circuit system 30 can be used to drive the vibration system 20 to vibrate, thereby realizing the sound-emitting function of the sound-emitting unit 100. At the same time, the connection position between the diaphragm 21 in the vibration system 20 and the frame 10 is set, so that the thickness of a part of the sound-emitting unit 100 is reduced. When the sound-emitting unit 100 is installed in the housing of the speaker module, the thinned thickness area can increase the space of the front cavity channel after the module is assembled, thereby reducing the noise problem of the speaker module, and significantly improving the sound quality, which is helpful to improve the sound effect of the whole machine.

[0043] In one embodiment, a first connecting portion 22 and a second connecting portion 23 are formed on the outer periphery of the diaphragm 21, and the first connecting portion 22 is adapted to the first matching portion 11, and the second connecting portion 23 is adapted to the second matching portion 12. In this way, the diaphragm 21 can be fixed to the first matching portion 11 through the first connecting portion 22, and the second connecting portion 23 is fixed to the second matching portion 12, thereby realizing the connection between the diaphragm 21 and the second side surface.

[0044] In one embodiment, the second side surface is an inclined surface. In this way, the thickness of the frame 10 can be set gradually, wherein the second side surface corresponding to the thinner area of ​​the frame 10 is the first matching portion, and the second side surface corresponding to the thicker area of ​​the frame 10 is the second matching portion. Since the thickness of the frame 10 is set gradually, the thickness of the sound unit 100 is also set gradually, so that the distance between the first matching portion and the first side surface is smaller than the distance between the second matching portion and the first side surface, thereby achieving a gradual thinning of the thickness of the sound unit 100, thereby improving the sound effect of the whole machine.

[0045] Of course, in other embodiments, the first matching portion 11 is an inclined surface, and along the radial diffusion direction of the frame 10 , the inclined surface is inclined toward the first side surface.

[0046] Specifically, since the first matching portion 11 is an inclined surface inclined toward the first side surface, the first mounting portion matching therewith is also an inclined surface. Therefore, when the first connecting portion 22 is assembled with the frame 10, the thickness direction of the sound unit 100 can be thinned, thereby improving the sound quality.

[0047] Furthermore, since the inclination of the first matching portion 11 is along the radial diffusion direction of the frame 10 , the front cavity formed by the sound unit 100 and the housing can be made smoother, thereby further improving the sound quality.

[0048] In one embodiment, the inclination angle of the inclined plane is between 0-90°. Specifically, the inclination angle of the inclined plane can be any angle between 0-90°, such as 30°, 45°, 60°, 75°, etc., and can be selected according to simulation needs in the application.

[0049] In a specific embodiment of the present invention, the first matching portion 11 and the second matching portion 12 are formed as steps with a height difference.

[0050] Specifically, in the second side surface, the first matching portion 11 and the second matching portion 12 are both planes, and the first matching portion 11 is recessed relative to the second matching portion 12, and the second matching portion 12 is protruded relative to the first matching portion 11, that is, a step with a height difference is formed, so that when the first connecting portion 22 is assembled with the frame 10, the area corresponding to the first connecting portion 22 can achieve the thinning of the thickness direction of the sound-emitting unit 100, thereby improving the sound quality. Optionally, the plane where the first matching portion 11 is located is parallel to the plane where the second matching portion 12 is located, or at a certain angle. The utility model does not limit this, and can be designed and manufactured according to actual needs.

[0051] In one embodiment, the height difference is greater than 0.01 mm but less than the thickness of the frame 10 at the position corresponding to the first matching portion 11. Specifically, if the structure allows, the greater the height difference, the greater the thinning volume of the sound unit 100, the greater the space added to the front cavity when the sound unit 100 is assembled with the housing, and the better the improvement in sound quality. In this embodiment, the height difference formed by the first matching portion 11 and the second matching portion 12 can be any value such as 0.1 mm, 0.5 mm, 1 mm or 2 mm.

[0052] In one embodiment, the number of the first matching parts 11 is greater than or equal to 1. Specifically, the number of the first matching parts 11 and the first connecting parts 22 is the same, and the number can be determined as needed. For example, the number of the first matching parts 11 and the first connecting parts 22 is 1, 2, 3, 4, etc. The more the number of the first matching parts 11 is, the greater the thinning volume of the sound unit 100 is, the greater the space added to the front cavity when the sound unit 100 is assembled with the housing, and the better the improvement of the sound quality.

[0053] In one embodiment, the sound unit 100 has a long axis and a short axis, and the first matching portion 11 is formed on the long axis and / or the short axis.

[0054] Specifically, the sound unit 100 can be set in a rectangular shape, with its length direction as the long axis, the width direction as the short axis, and the thickness as the Z axis. By forming the first matching part 11 on the long axis and / or the short axis, the sound unit 100 can be thinned in the thickness direction, that is, thinning is achieved in the Z axis, thereby improving the sound quality.

[0055] In one embodiment, the magnetic circuit system 30 includes a magnetic yoke 31 and a central magnet 32 ​​and a side magnet 33 connected to the same side of the magnetic yoke 31. The magnetic yoke 31 is located on the side of the side magnet 33 away from the frame 10, and the side magnet 33 and the central magnet 32 ​​are arranged at intervals. Specifically, there are multiple side magnets 33, which are arranged around the central magnet 32, and the central magnet 32 ​​and the side magnet 33 are fixed together on the side of the magnetic yoke 31 facing the vibration system 20, so as to be accommodated in the frame 10.

[0056] Optionally, the magnetic circuit system 30 also includes a central magnetic conductive plate 34 disposed on the upper surface of the central magnet 32 ​​and a side magnetic conductive plate 35 disposed on the upper surface of the side magnet 33, and a magnetic gap is formed between the central magnetic conductive plate 34 and the side magnetic conductive plate 35 for the voice coil 27 to be inserted.

[0057] Optionally, the side magnetic conductive plate 35 and the frame 10 are an integral structure for easy assembly; the side magnetic conductive plate 35 and the frame 10 can also be bonded, welded or injection molded into one, which effectively reduces costs.

[0058] In one embodiment, the vibration system 20 includes a diaphragm 21, a vibration plate 26, a voice coil 27, and a centering support 28. The diaphragm 21 is arranged in a ring shape, and in addition to the first connection portion 22 and the second connection portion 23, the diaphragm 21 also includes a folding ring 24 and a third connection portion 25 connected to the inner edge of the folding ring 24, and the first connection portion 22 and the second connection portion 23 are connected to the outer periphery of the folding ring 24. The periphery of the vibration plate 26 is connected to the third connection portion 25.

[0059] The voice coil 27 is disposed in the receiving cavity, and one end is connected to the third connection portion 25 of the diaphragm 21, and the other end is inserted into the magnetic gap, so that when an alternating current is passed, the voice coil 27 can vibrate in the magnetic gap, thereby driving the diaphragm 21 to vibrate and produce sound. One end of the centering support 28 is connected to the frame 10, and the other end is connected to the voice coil 27, so that the eccentric vibration of the voice coil 27 can be effectively reduced.

[0060] The second aspect of the utility model provides a speaker module, including a housing and a sounding unit 100 fixed in the housing and the housing, wherein the sounding unit 100 is any of the sounding units 100 described above. The specific structure of the sounding unit 100 can refer to the above embodiments. Since the speaker module in this embodiment has the sounding unit 100 in all the above embodiments, it must also have the beneficial effects of the above sounding unit 100, which will not be repeated here one by one.

[0061] In one embodiment, the shell has a sound outlet hole, and a front cavity is formed between the shell and the diaphragm 21, and the front cavity is connected to the sound outlet hole; in this way, the vibration sound waves formed by the sound-emitting unit 100 in the shell can be transmitted to the outside of the speaker module through the front cavity and the sound outlet hole in turn.

[0062] At least one first matching portion 11 is disposed adjacent to the sound outlet pipe, and the height of the front cavity adjacent to the sound outlet pipe is greater than the height of the front cavity away from the sound outlet pipe. Specifically, in the speaker module, the diaphragm 21 is disposed corresponding to the front cavity, and the first connecting portion 22 is adjacent to the sound outlet hole, that is, the thinning area of ​​the sound-emitting unit 100 is adjacent to the sound outlet hole, which can improve the fluidity of the front cavity and reduce noise.

[0063] 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: It comprises a frame with a receiving space, a magnetic circuit system arranged on a first side surface of the frame, and a vibration system arranged on a second side surface of the frame; The vibration system includes a diaphragm, which is fixedly connected to the second side surface; the second side surface includes a first matching portion and a second matching portion, and the distance between the first matching portion and the first side surface is smaller than the distance between the second matching portion and the first side surface.

2. The sound-emitting unit according to claim 1, characterized in that: The second side surface is an inclined surface.

3. The sound-emitting unit according to claim 1, characterized in that: The first matching portion and the second matching portion are formed as steps having a height difference.

4. The sound-emitting unit according to claim 3, characterized in that: The height difference is greater than 0.01 mm but less than the thickness of the frame at a corresponding position of the first matching portion.

5. The sound-emitting unit according to claim 1, characterized in that: A first connecting portion and a second connecting portion are formed on the outer periphery of the diaphragm. The first connecting portion is adapted to be connected with the first matching portion, and the second connecting portion is adapted to be connected with the second matching portion.

6. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The number of the first matching parts is greater than or equal to one.

7. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The sound-emitting unit has a long axis and a short axis, and the first matching portion is formed on the long axis and / or the short axis.

8. The sound-emitting unit according to claim 1, characterized in that: The diaphragm further comprises a fold ring and a third connecting portion connected to the inner circumference of the fold ring; and / or The magnetic circuit system forms a magnetic gap, and the vibration system further comprises a voice coil connected to the diaphragm, wherein the voice coil is inserted into the magnetic gap; and / or The magnetic circuit system includes a magnetic yoke and a central magnet and a side magnet connected to the same side of the magnetic yoke. The magnetic yoke is located on a side of the side magnet away from the frame, and the side magnet and the central magnet are spaced apart.

9. A speaker module, characterized in that: It comprises a shell and a sound-emitting unit fixed to the shell, and the sound-emitting unit is the sound-emitting unit described in any one of claims 1-8.

10. The speaker module according to claim 9, characterized in that: The housing has a sound outlet hole, a front cavity is formed between the housing and the diaphragm, and the front cavity is connected to the sound outlet hole; Wherein, at least one of the first matching portions is disposed adjacent to the sound outlet hole, and a height of the front cavity close to the sound outlet hole is greater than a height of the front cavity away from the sound outlet hole.

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