CN217825348U - Sound production module and electronic equipment - Google Patents

Abstract

The utility model belongs to the technical field of electroacoustic conversion equipment, concretely relates to sound production module and electronic equipment, wherein, the sound production module includes: a housing; the sounding single body is arranged in the shell and comprises a magnetic yoke, the magnetic yoke and part of the shell are enclosed to form a rear sound cavity, the magnetic yoke is provided with a convex part extending towards the interior of the sounding single body, one side of the convex part facing the rear sound cavity forms an accommodating space, and the accommodating space is communicated with the rear sound cavity; the rear sound cavity is filled with sound absorption particles, and the sound absorption particles are at least partially filled in the accommodating space. According to the utility model discloses a sound production module replaces the magnet steel of putting central point in the current scheme through the bellying, has effectively alleviateed the weight of sound production module, and accommodating space and back sound chamber intercommunication have increased the whole volume of back chamber, are favorable to promoting the tone quality of sound production module.

Description

Sound production module and electronic equipment

Technical Field

The utility model belongs to the technical field of the electroacoustic conversion equipment, concretely relates to sound production module and have electronic equipment of this sound production module.

Background

A speaker plays an indispensable role in a sound reproduction system as a common electroacoustic transducer device for converting electric energy into acoustic energy.

With consumer electronic products such as mobile phones and tablet computers, especially large wearable electronic devices such as AR/VR, higher requirements on lightness and thinness in appearance and performance are put forward, and speakers as an important component unit of such products also put forward higher and higher requirements in performance, size and other aspects.

The existing equipment strengthens magnetic field intensity by increasing the quantity of magnetic steel or increasing the magnetic steel, but increases the quantity of magnetic steel and can increase the whole weight, increases the magnetic steel and considers frivolous and can certainly make the back cavity volume reduce, influences the tone quality of speaker.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving at least and increasing the magnet steel and making the problem that the back chamber volume reduces when taking into account frivolousness. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a sound production module, and this sound production module includes: a housing; the sounding unit is arranged in the shell and comprises a magnetic yoke, the magnetic yoke and part of the shell are enclosed to form a rear sound cavity, the magnetic yoke is provided with a protruding part extending towards the interior of the sounding unit, the protruding part faces one side of the rear sound cavity to form an accommodating space, and the accommodating space is communicated with the rear sound cavity; the sound absorbing particles are filled in the rear sound cavity, and at least part of the sound absorbing particles are filled in the accommodating space.

According to the utility model discloses a sound production module, set up the bellying on the yoke, and form the accommodating space with the hou sheng qiang intercommunication in one side of bellying orientation hou sheng chamber, the whole volume in hou sheng chamber has been increased in other words, even increase the inside magnet thickness of sound production monomer, also can be through increasing the volume of bellying increase accommodating space, with the whole volume of increase hou sheng chamber and accommodating space, promote the tone quality of sound production module, it is still needed the emphasis, sound particles are inhaled in the inside packing of hou sheng chamber and accommodating space, can further increase the sound-absorbing effect in hou sheng chamber, promote the free tone quality of sound production.

Additionally, according to the utility model discloses a sounding module still can have following additional technical characterstic:

in some embodiments of the present invention, the sounding unit further includes: the magnet assembly is arranged on one side, facing the installation space, of the magnetic yoke and comprises first magnets, the first magnets are arranged around the periphery of the protruding portion, and a first magnetic gap is formed between the first magnets and the protruding portion; the vibration subassembly, the vibration subassembly with the shell is connected, the vibration subassembly includes first voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil movably is located in the first magnetic gap.

In some embodiments of the present invention, the magnet assembly further comprises a second magnet, the second magnet is disposed along a circumferential direction of the first magnet in the yoke, the first magnet and the second magnet form a second magnetic gap therebetween, the vibration assembly further comprises a second voice coil, the second voice coil is annularly disposed outside the first voice coil and movably disposed in the second magnetic gap.

In some embodiments of the present invention, the vibration assembly further comprises: the outer edge of the vibrating diaphragm is connected with the shell; the ball top is connected with the vibrating diaphragm, and the vibrating diaphragm is connected with the first voice coil and the second voice coil through the ball top.

The utility model discloses an in some embodiments, the yoke is equipped with at least one intercommunication installation space with the through-hole in back sound chamber, the through-hole orientation back sound chamber side lid is equipped with the damping net, the damping net with the through-hole corresponds the setting.

In some embodiments of the present invention, the protrusion comprises: the side part is connected with the plate surface of the magnetic yoke; the top part is connected with one side of the side part facing the top of the ball, and the top part is arranged in parallel with the top of the ball.

In some embodiments of the present invention, the magnetic yoke is a plate-shaped member, and the part of the magnetic yoke is formed by recessing the inside of the sound-generating unit.

In some embodiments of the present invention, the sounding unit further includes: the first washer is arranged on the first magnet; and/or the second washer is arranged on the second magnet, and the second washer is connected with the shell in an injection molding mode.

In some embodiments of the present invention, the sounding unit further includes: and one end of the centering support sheet is connected with the shell, and the other end of the centering support sheet is connected with the bottom end of the second voice coil.

The utility model discloses an on the other hand has still provided an electronic equipment, electronic equipment includes: a housing; at least one above-mentioned arbitrary sound production module, sound production module locates the casing, just sound production module with inject the back chamber between the casing.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:

fig. 1 is a schematic structural diagram of a sound module at a first viewing angle according to an embodiment of the present invention;

fig. 2 isbase:Sub>A schematic sectional view ofbase:Sub>A-base:Sub>A ofbase:Sub>A sound module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a magnetic yoke according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a sound module at a second viewing angle according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an assembly structure of a yoke, a first magnet, a second magnet, a first voice coil, and a second voice coil according to an embodiment of the present invention;

fig. 6 is a schematic sectional view of a yoke according to an embodiment of the present invention.

The reference numerals in the drawings denote the following:

100: a sounding monomer;

11: yoke, 111: boss, 1111: top, 1112: side part, 1113: housing space, 112: through hole, 113: damping net, 12: outer shell, 15: an installation space;

20: vibration assembly, 21: first voice coil, 22: second voice coil, 23: diaphragm, 24: a ball top;

30: magnet assembly, 31: first magnet, 32: second magnet, 33: first magnetic gap, 34: a second magnetic gap;

41: first washer, 42 second washer, 43: a centering disk.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative term is intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both an up and down orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The existing loudspeaker improves the sound pressure level by arranging a plurality of magnets to match with a double voice coil, wherein the plurality of magnets generally comprise a central magnet positioned at a central position, a middle magnet annularly arranged outside the central magnet and an outer ring magnet annularly arranged outside the middle magnet, a first magnetic gap for accommodating a first voice coil is formed between the central magnet and the middle magnet, and a second magnetic gap for accommodating a second voice coil is formed between the middle magnet and the outer ring magnet. Because present electronic equipment all develops towards frivolous direction, the magnet quantity makes product weight big more, if reduces the magnet quantity through increasing the magnet height, under the prerequisite of keeping thin size, then can compress the back chamber space, reduces product tone quality.

This application has proposed a sound production module for this reason, and sound production module has casing (not shown in the figure) and sound production monomer 100, sets up in the casing at sound production monomer 100 to, form back sound cavity (not shown in the figure) between sound production monomer 100 and partial casing, the sound wave that the sound production module produced gets into back sound cavity, in order to improve sound quality.

Referring to fig. 1 to 6, in an embodiment of the present invention, a sound generating unit 100 includes: yoke 11, the enclosure forms the back sound chamber between yoke 11 and the sound production module part casing to, be equipped with boss 111 on yoke 11, boss 111 extends towards the inside of sound production monomer 100, and forms accommodating space 1113 with the back sound chamber intercommunication at boss 111 towards one side of back sound chamber, and accommodating space 1113 and back sound chamber intercommunication have increased the whole volume in back sound chamber in other words. And because the protruding part 111 extends towards the inside of the single sound generating body 100, the protruding part 111 does not occupy the space of the rear sound cavity, even if the height of the magnet in the single sound generating body 100 is increased, the extending length of the protruding part 111 towards the inside of the single sound generating body 100 can be increased, so that the whole volume of the rear sound cavity and the accommodating space 1113 is increased. Because the whole volume of the back sound cavity and the accommodating space 1113 is larger, when sound waves excited by the sounding single body 100 are under the action of the back sound cavity and the accommodating space, the short circuit of low-frequency sound in the sounding module can be prevented, so that the low-frequency sound is more powerful, the tone quality is mellow, and the sounding module has higher sounding tone quality. And sound-absorbing particles are filled in the rear sound cavity and the accommodating space, so that the sound production tone quality of the rear sound cavity is further improved.

As shown in fig. 1 and 2, the sound generating unit 100 further includes: a housing 12, a vibration assembly 20, and a magnet assembly 30.

Specifically, vibration subassembly 20 includes first voice coil 21, and magnet subassembly 30 includes first magnet 31, and yoke 11 is the plate-like piece, and shell 12 is cyclic annularly, and the one end of shell 12 is located to yoke 11 cover to yoke 11 and shell 12 inject installation space 15, and installation space 15 is all located to magnet subassembly 30 and vibration subassembly 20, so that the sound production module overall structure appearance is succinct compacter, is favorable to reducing the whole volume of sound production module, improves the adaptation degree of sound production module and other equipment.

The yoke 11 is used to carry the magnet assembly 30, the vibration assembly 20 is located at one side of the yoke 11, and the magnet assembly 30 is located between the vibration assembly 20 and the yoke 11. The first magnet 31 is annular, the first magnet 31 is disposed around the protrusion 111, a first magnetic gap 33 is formed between the first magnet 31 and the protrusion 111, and the first voice coil 21 is movably disposed in the first magnetic gap 33. When current is applied to the first voice coil 21, the voice coil is subjected to a force, such as an attractive force or a repulsive force, in the magnetic field of the first magnet 31, so that the voice coil can vibrate back and forth in the first magnetic gap 33, thereby causing the vibration assembly 20 to vibrate integrally to excite air to generate sound waves.

In this embodiment, the protruding portion 111 is in a hollow shell shape, and on one hand, the protruding portion 111 replaces magnetic steel placed in the center position in the existing scheme, so that the weight of the sound generating module is effectively reduced.

Referring to fig. 2 and 5, in some embodiments of the present invention, the magnet assembly 30 further includes at least two second magnets 32, the vibration assembly 20 further includes a second voice coil 22, the at least two second magnets 32 are disposed along a circumference of the first magnet 31, and a second magnetic gap 34 for accommodating the second voice coil 22 is formed between the first magnet 31 and the second magnet 32, the second voice coil 22 is annularly disposed outside the first voice coil 21, and the second voice coil 22 is movably disposed in the second magnetic gap 34. In this embodiment, through setting up two voice coils, can show the sound pressure level that improves sound production module, be favorable to improving sound production module's loudness.

As shown in fig. 2 and 4, the vibration assembly 10 further includes: the outer edge of the diaphragm 23 is connected to one end of the housing 12 away from the yoke 11, specifically, the diaphragm 23 is ring-shaped, and the edge of the diaphragm 23 is fixedly bonded to one end of the housing 12 away from the yoke 11. The ball top 24 is located at the center of the diaphragm 23, and one side of the ball top 24 is connected to one side of the diaphragm 23 facing the yoke 11, and the other side of the ball top 24 is connected to both the first voice coil 21 and the second voice coil 22, and the first voice coil 21 and the second voice coil 22 drive the diaphragm 23 to vibrate through the ball top 24. In this embodiment, the diaphragm 23, the dome 24, and the voice coil are sequentially combined from top to bottom, and the diaphragm 23 and the dome 24 together close the end of the mounting space 15 away from the yoke 11.

Further, as shown in fig. 2 to 4, at least one through hole 112 is formed in the yoke 11, so that the through hole 112 can communicate the installation space 15 with the rear sound cavity, and when the diaphragm 23 vibrates, air and sound waves in the installation space 15 can enter the rear sound cavity through the through hole 112, on one hand, air pressure inside the installation space 15 is balanced, so that the first voice coil 21 and the second voice coil 22 can more smoothly drive the diaphragm 23 to vibrate, and on the other hand, the rear sound cavity is used to improve the sound quality of the sound module. In addition, the through hole 112 is equipped with damping net 113 towards one side lid of back sound chamber, and damping net 113 corresponds the setting with through hole 112, and damping net 113's setting can prevent to inhale in the back sound chamber that sound particles from getting into the sound production monomer 100 inside through hole 112.

In an exemplary real-time manner, as shown in fig. 3 and 4, four through holes 112 are formed on the magnetic yoke 11, each through hole 112 is uniformly distributed at the edge of the magnetic yoke 11, and correspondingly, each through hole 112 is covered with a damping mesh 113.

Further, as shown in fig. 6, the protrusion 111 includes a top portion 1111 and a side portion 1112, the side portion 1112 is connected to the plate surface of the yoke 11, the top portion 1111 is connected to a side of the side portion 1112 facing the dome 24, and a receiving space 1113 is defined between the top portion 1111 and the side portion 1112. The top 1111 is parallel to the dome 24, so that the top 1111 and the dome 24 have a parallel gap, and the space between the protrusion 111 and the dome 24 is larger on the premise of maximizing the volume of the receiving space 1113, thereby preventing the protrusion 111 from interfering with the movement of the vibration component 20.

In an exemplary embodiment, as shown in fig. 3, the yoke 11 is a plate-shaped member, and the protrusion 111 is a press shape formed by the yoke 11 being partially recessed into the sound-generating unit 100 through a sheet metal process, so that the difficulty of manufacturing the yoke 11 is reduced, and the manufacturing efficiency is improved. Moreover, the opening of the housing space 1113 and the wall surface of the yoke 11 can smoothly transit, so that the sound quality is more smooth.

With reference to fig. 2, in some embodiments of the present invention, the sound generating unit 100 further includes a first washer 41, the first washer 41 is disposed on the first magnet 31, the first washer 41 is used for magnetic conduction, the first washer 41 can concentrate the N pole and the S pole of the first magnet 31 to the first magnetic gap 33 through the loop, so that the first magnetic gap 33 generates a stronger magnetic field, and the magnetic field of the first magnet 31 is more uniform, thereby providing a uniform magnetic field required for the movement of the first voice coil 21. Make the sound production module have higher sensitivity and lower distortion, promote the tone quality of sound production module.

The utility model discloses an among some embodiments, sound production monomer 100 still includes second china 42, and on second china 42 located second magnet 32, second china 42 was used for the magnetic conduction, and second china 42 can concentrate second magnetic gap 34 through the return circuit with the N utmost point and the S utmost point of second magnet 32, makes second magnetic gap 34 produce stronger magnetic field to make second magnet 32' S magnetic field more even, thereby provide the required even magnetic field of second voice coil loudspeaker voice coil 22 motion. Make the sound production module have higher sensitivity and lower distortion, promote the tone quality of sound production module.

In some embodiments of the present invention, the sounding unit 100 includes a first washer 41 and a second washer 42, the first washer 41 is disposed on the first magnet 31, the second washer 42 is disposed on the second magnet 32, and the magnetic field of the first magnetic gap 33 and the magnetic field of the second magnetic gap 34 are more uniform through the first washer 41 and the second washer 42, so as to provide a uniform magnetic field required for the movement of the first voice coil 21 and the second voice coil 22. Make the sound production module have higher sensitivity and lower distortion, promote the tone quality of sound production module. In this embodiment, the second washer 42 is connected with the housing 12 by injection molding, so as to improve the stability of the entire structure of the sound generating unit 100 and improve the product quality.

In one specific embodiment, as shown in fig. 2 and 5, the number of the second magnets 32 is four, the first magnet 31 is a rectangular ring structure, the first magnet 31 has four sides, each second magnet 32 is disposed corresponding to one side of the first magnet 31, the four second magnets 32 are rectangular strip magnets and are circumferentially disposed on the first magnet 31, two second magnets 32 of the four second magnets 32 are symmetrically disposed in the length direction of the first magnet 31, the other two second magnets 32 of the four second magnets 32 are symmetrically disposed in the width direction of the first magnet 31, any one of the second magnets 32 is spaced apart from the first magnet 31 and forms a magnetic gap, and the bottom end of the second voice coil 22 is inserted into the first magnetic gap 33. Wherein the second magnet 32 is connected to the second washer 42, thereby securing the second washer 42 to the second magnet 32 and for increasing the magnetic field strength of the magnet assembly 30.

As shown in fig. 2, in some embodiments of the present invention, the sound generating unit 100 further includes: centering branch piece 43, centering branch piece 43's one end links to each other with shell 12, and centering branch piece 43's the other end links to each other with the bottom of second voice coil 22 to be used for supporting the vibration of second voice coil 22, improve the vibration stability of second voice coil 22, prevent that second voice coil 22 from appearing the phenomenon of polarization. There is also a gap between the second magnet 32 and the housing 12, through which gap a portion of the structure of the spider 43 extends into the second magnetic gap 34 to connect with the bottom end of the second voice coil 22, thereby serving to connect the second voice coil 22 to the housing 12. By providing a gap between the second magnet 32 and the housing 12, interference of the vibration process of the damper 43 during the vibration process of the second voice coil 22 can be avoided, and the normal vibration process of the damper 43 can be ensured.

The utility model discloses an on the other hand has still provided an electronic equipment, and electronic equipment includes the sound production module of casing and the arbitrary embodiment of the aforesaid, and the casing is located to the sound production module to inject back vocal cavity between sound production module and casing.

According to the utility model provides an electronic equipment, the sound production module among the electronic equipment has less volume and lighter weight to have great back vocal cavity volume, can effectively promote electronic equipment's tone quality, and be favorable to electronic equipment's lightweight, miniaturized design.

In this embodiment, the electronic device may be a wearable electronic device, such as an AR/VR device, a microphone, a smart watch, or a bracelet, or may be a mobile terminal, such as a mobile phone or a notebook computer, or other devices that need to have an audio-electrical conversion function, which is not limited herein.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a sound production module, its characterized in that, sound production module includes:

a housing;

the sounding unit is arranged in the shell and comprises a magnetic yoke, the magnetic yoke and part of the shell are enclosed to form a rear sound cavity, the magnetic yoke is provided with a protruding part extending towards the interior of the sounding unit, the protruding part faces one side of the rear sound cavity to form an accommodating space, and the accommodating space is communicated with the rear sound cavity;

the rear sound cavity is filled with sound-absorbing particles, and the sound-absorbing particles are at least partially filled in the accommodating space.

2. The sound generating module of claim 1, wherein the sound generating unit further comprises:

the shell and the magnetic yoke enclose to form an installation space;

the magnet assembly is arranged on one side, facing the installation space, of the magnet yoke and comprises a first magnet, the first magnet is arranged around the periphery of the boss, and a first magnetic gap is formed between the first magnet and the boss;

the vibration subassembly, the vibration subassembly with the shell is connected, the vibration subassembly includes first voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil movably is located in the first magnetic gap.

3. The audible module according to claim 2,

the magnet assembly further comprises a second magnet arranged on the magnetic yoke along the circumferential direction of the first magnet, a second magnetic gap is formed between the first magnet and the second magnet,

the vibration component further comprises a second voice coil, and the second voice coil is annularly arranged outside the first voice coil and movably arranged in the second magnetic gap.

4. The sound generation module of claim 2, wherein the vibration assembly further comprises:

the outer edge of the vibrating diaphragm is connected with the shell;

the ball top is connected with the vibrating diaphragm, and the vibrating diaphragm is connected with the first voice coil and the second voice coil through the ball top.

5. The sound generation module of claim 2,

the magnet yoke is provided with at least one through hole which is communicated with the mounting space and the rear acoustic cavity, a damping net is covered on one side of the through hole facing the rear acoustic cavity, and the damping net is arranged corresponding to the through hole.

6. The sound generation module of claim 4, wherein the boss comprises:

the side part is connected with the plate surface of the magnetic yoke;

the top part is connected with one side of the side part facing the top of the ball, and the top part is arranged in parallel with the top of the ball.

7. The sound generation module of any one of claims 1-6,

the magnetic yoke is a plate-shaped piece, and the part of the magnetic yoke is sunken towards the interior of the sounding single body to form the convex part.

8. The sound generating module of claim 3, wherein the sound generating unit further comprises:

the first washer is arranged on the first magnet; and/or

And the second washer is arranged on the second magnet, and the second washer is connected with the shell in an injection molding manner.

9. The sound generating module of claim 3, wherein the sound generating unit further comprises:

and one end of the centering support sheet is connected with the shell, and the other end of the centering support sheet is connected with the bottom end of the second voice coil.

10. An electronic device, characterized in that the electronic device comprises:

a housing;

at least one sound module according to any one of claims 1-9, said sound module being provided in said housing.

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