CN217470268U

CN217470268U - Sound production device and audio equipment

Info

Publication number: CN217470268U
Application number: CN202221060496.8U
Authority: CN
Inventors: 侯燕燕; 郭晓冬; 张成飞
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-20
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a sounding device and audio equipment, wherein, the sounding device comprises a magnetic conduction plate, a shell arranged on the magnetic conduction plate, a first magnetic circuit structure, a second magnetic circuit structure and a high pitch vibrating diaphragm arranged on the shell; the second magnetic circuit structure is arranged at the periphery of the first magnetic circuit structure; a side magnetic gap is formed between the first magnetic structure and the second magnetic structure, and a central magnetic gap is formed on one side of the first magnetic structure, which is far away from the magnetic conduction plate; the high pitch vibrating diaphragm corresponds central magnetic gap setting, and the sound production device is equipped with the sound outlet hole that supplies the sound wave radiation of high pitch vibrating diaphragm. The sounding device further comprises a bass vibrating diaphragm, the bass vibrating diaphragm is provided with a first fixing portion located on the inner peripheral side and a second fixing portion located on the outer peripheral side, an avoiding hole opposite to the sounding hole is formed in the inner side of the first fixing portion, the first fixing portion is fixedly connected to the outside of the sounding hole, and the second fixing portion is combined with the peripheral portion of the shell. The utility model discloses technical scheme aims at optimizing the mounting structure of bass vibrating diaphragm to the bass performance of guarantee sound production device.

Description

Sound production device and audio equipment

Technical Field

The utility model relates to an electroacoustic conversion technical field, in particular to sound production device and audio equipment.

Background

The sound production device is an important acoustic component in audio equipment, and is a transducer for converting an electric signal into an acoustic signal, and the audio equipment comprises earphones, a sound box, a mobile phone or a computer and the like. Nowadays, the market is more and more pursuing full frequency channel tone quality, for satisfying full frequency channel tone quality, shows the multiunit audio equipment that many high bass unit combine, places high pitch unit and bass unit in audio equipment promptly. However, in the existing multi-unit audio device, the installation structure of the bass diaphragm is not reasonable, so that the bass performance of the sound production device is not ideal, and the use experience of a user is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sounding device aims at optimizing the mounting structure of bass vibrating diaphragm to guarantee the bass performance of sounding device.

In order to achieve the above object, the present invention provides a sound generating device, including:

the magnetic conduction plate is arranged on the shell of the magnetic conduction plate;

the first magnetic structure and the second magnetic structure are arranged on the magnetic conduction plate, the first magnetic structure is positioned in the central area, and the second magnetic structure is arranged on the periphery of the first magnetic structure; a side magnetic gap is formed between the first magnetic structure and the second magnetic structure, and a central magnetic gap is formed on one side of the first magnetic structure, which is far away from the magnetic conductive plate;

the high-pitch vibrating diaphragm is arranged in the shell and corresponds to the central magnetic gap, and the sound production device is provided with a sound outlet hole for sound wave radiation of the high-pitch vibrating diaphragm; and

the bass diaphragm is provided with a first fixing part located on the inner peripheral side and a second fixing part located on the outer peripheral side, a material removing area on the inner side of the first fixing part is provided with an avoiding hole relative to the sound outlet hole, the first fixing part is fixedly connected to the outside of the sound outlet hole, and the second fixing part is combined with the peripheral part of the shell.

Optionally, the sounding device further comprises a cover body, the periphery of the cover body is connected to the first magnetic structure, the high-pitch vibrating diaphragm is contained between the cover body and the first magnetic structure, the sound outlet hole is formed in the cover body, and the first fixing portion is fixed on one side, far away from the high-pitch vibrating diaphragm, of the cover body.

Optionally, the sound outlet hole is disposed in a center of the cover, the cover is provided with a supporting portion around an outer periphery of the sound outlet hole, and the first fixing portion of the bass diaphragm is fixedly coupled to the supporting portion.

Optionally, the sound outlet hole is a tubular structure extending along the vibration direction of the high-pitched sound diaphragm, and one end of the sound outlet hole close to the high-pitched sound diaphragm is provided with the supporting portion surrounding the sound outlet hole.

Optionally, the upper surface of the cover is a planar structure, the sound outlet hole is a hole-shaped structure disposed at a central position of the upper surface of the cover, and the support portion is formed in a region of the upper surface of the cover around the sound outlet hole.

Optionally, the cover is made of a magnetic material.

Optionally, the sound production device further comprises an auxiliary magnet disposed on one side of the first magnetic circuit structure, which is away from the magnetic conductive plate, the high-pitch vibrating diaphragm is accommodated between the first magnetic circuit structure and the auxiliary magnet, the sound outlet hole is formed in the auxiliary magnet, and the first fixing portion is connected to one side of the auxiliary magnet, which is away from the high-pitch vibrating diaphragm.

Optionally, the bass diaphragm includes a first edge and a second edge annularly arranged outside the first edge, the first fixing portion is arranged on an inner circumference of the first edge, and the second fixing portion is arranged on an outer circumference of the second edge; first roll over the ring with the second is rolled over and is formed with plane vibration portion between the ring, the sound production device is still including inserting and locating the bass voice coil in limit magnetic gap, the bass voice coil is located being close to of bass vibrating diaphragm one side of high-pitch vibrating diaphragm is connected to in plane vibration portion.

Optionally, the first folding ring and the second folding ring are separately arranged.

Optionally, the first folding ring and the second folding ring are integrally formed.

Optionally, the first folding ring and the second folding ring are separately arranged, a first flat part is formed on the outer periphery of the first folding ring, a second flat part corresponding to the first flat part is formed on the inner periphery of the second folding ring, and the first flat part and the second flat part are overlapped to form the planar vibration part.

Optionally, a reinforcing member is arranged on the planar vibration portion, the reinforcing member is annular, two opposite peripheral sides of the reinforcing member are respectively connected to the first folded ring and the second folded ring, and the bass voice coil is connected to the reinforcing member;

optionally, the first fold ring and/or the second fold ring are/is protruded in a direction away from the high pitch diaphragm.

Optionally, the curvature of the first corrugated rim increases gradually in the direction from outside to inside.

Optionally, the curvature of the second corrugated rim gradually decreases in the outward and inward direction.

Optionally, the material of the first folding ring and/or the material of the second folding ring is an LCP material or a PEN material.

The utility model discloses still provide an audio equipment, including aforementioned vocal device.

Optionally, the audio device is a headset.

The utility model discloses among the technical scheme, the vibration portion of bass vibrating diaphragm is located between first fixed part and the second fixed part, and first fixed part fixed connection outside going out the sound hole, and second fixed part fixed connection enables the stable installation of bass vibrating diaphragm in the week portion of casing, is favorable to guaranteeing the stable vibration of vibration portion to can ensure the bass performance of sound production device. Moreover, the bass vibrating diaphragm is provided with a avoiding hole for avoiding the sound hole, and the sound wave radiation of the high-pitch vibrating diaphragm can not be blocked by the bass vibrating diaphragm, so that the high-pitch performance of the sound production device is guaranteed. Therefore, the mounting structure of the bass vibration film is optimized, and the acoustic performance of the sounding device is guaranteed. In addition, the first magnetic circuit structure forms a central magnetic gap and also forms a side magnetic gap L with the second magnetic circuit structure, so that the magnetic circuit structure of the sounding device is simplified, the axial size of the sounding device is reduced, the size of the sounding device can be reduced, and the assembly convenience of the sounding device in audio equipment is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of an embodiment of the sound device of the present invention;

fig. 2 is a schematic view of an explosion structure of an embodiment of the sound production device of the present invention;

fig. 3 is a cross-sectional view of an embodiment of the sound device of the present invention;

fig. 4 is a cross-sectional view of an embodiment of the sound device of the present invention;

fig. 5 is a cross-sectional view of an embodiment of the sound device of the present invention;

fig. 6 is a cross-sectional view of an embodiment of the sound device of the present invention;

fig. 7 is a cross-sectional view of an embodiment of the sound device of the present invention;

FIG. 8 is a magnetic field simulation cloud diagram corresponding to an embodiment of the structure shown in FIG. 3 when the cover is magnetically conductive and the auxiliary magnet is not provided;

FIG. 9 is a simulated cloud of magnetic fields corresponding to an embodiment of the structure shown in FIG. 3 when the cover is magnetically conductive and provided with an auxiliary magnet;

FIG. 10 is a simulated cloud of magnetic fields corresponding to the structure shown in FIG. 3 when the cover is non-magnetic and has an auxiliary magnet;

FIG. 11 is a simulated cloud of magnetic fields corresponding to another embodiment of the structure shown in FIG. 3 when the cover is magnetically conductive and provided with an auxiliary magnet;

fig. 12 is a magnetic field simulation cloud chart corresponding to the embodiment when the cover has magnetic conductivity in the structure shown in fig. 4.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

The terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "a and/or B" as an example, including either the a aspect, or the B aspect, or both the a and B aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sounding device.

In an embodiment of the present invention, as shown in fig. 1 to 7, the sound generating device includes:

the magnetic conduction plate 110 and the shell 120 arranged on the magnetic conduction plate 110;

a first magnetic structure 200 and a second magnetic structure 300, both disposed on the magnetic conductive plate 110, wherein the first magnetic structure 200 is located in a central region, and the second magnetic structure 300 is disposed at the periphery of the first magnetic structure 200; a side magnetic gap is formed between the first magnetic structure 200 and the second magnetic structure 300, and a central magnetic gap is formed on one side of the first magnetic structure 200 away from the magnetic conductive plate 110;

the high-pitch vibrating diaphragm 500 is arranged in the shell 120 and corresponds to the central magnetic gap, and the sound generating device is provided with a sound outlet hole 101 for sound wave radiation of the high-pitch vibrating diaphragm 500; and

the bass diaphragm 620 is provided with a first fixing portion 612 located on the inner peripheral side and a second fixing portion 613 located on the outer peripheral side, an avoiding hole 621 opposite to the sound outlet hole 101 is formed in a material removing area inside the first fixing portion 612, the first fixing portion 612 is fixedly connected to the outside of the sound outlet hole 101, and the second fixing portion 613 is combined with the peripheral portion of the housing 120.

The utility model discloses among the technical scheme, the vibration portion of bass vibrating diaphragm 620 is located between first fixed part 612 and the second fixed part 613, and first fixed part 612 fixed connection is outside play sound hole 101, and second fixed part 613 fixed connection in the week portion of casing 120, enables the stable installation of bass vibrating diaphragm 620, is favorable to the stable vibration of guarantee vibration portion to can ensure the bass performance of sound production device. Moreover, the bass diaphragm 620 is provided with an avoiding hole 621 avoiding the sound hole 101, so that the sound wave radiation of the treble diaphragm 500 is not blocked by the bass diaphragm 620, which is beneficial to ensuring the treble performance of the sound production device. Thus, the mounting structure of the bass diaphragm 620 is optimized, thereby contributing to securing the acoustic performance of the sounding device. In addition, the first magnetic structure 200 forms a central magnetic gap and also forms a side magnetic gap L with the second magnetic structure 300, which is beneficial to simplifying the magnetic structure of the sound-producing device and plays a role in reducing the axial size of the sound-producing device, thereby reducing the volume of the sound-producing device and improving the assembly convenience of the sound-producing device in the audio equipment.

Further, in this embodiment, as shown in fig. 3 to 7, the first magnetic circuit structure 200 includes a first magnet 210 and a first washer 220 connected to each other, the first magnet 210 is disposed on the magnetic conductive plate 110, the first washer 220 is disposed on a side of the first magnet 210 away from the magnetic conductive plate 110, the first washer 220 includes a first sub-washer 221 and a second sub-washer 222 disposed outside the first sub-washer 221 in a ring manner, the first magnet 210 is formed with a first magnetic region disposed opposite to the first sub-washer 221 and a second magnetic region disposed opposite to the second sub-washer 222, and a magnetizing direction of the first magnetic region is opposite to a magnetizing direction of the second magnetic region, so that the central magnetic gap is formed between the first sub-washer 221 and the second sub-washer 222; the magnetizing direction of the second magnetic structure 300 is opposite to the magnetizing direction of the second magnetic region, so that the side magnetic gap L is formed between the first magnetic structure 200 and the second magnetic structure 300.

Specifically, the first magnetic area, the second magnetic area and the second magnetic circuit structure 300 are magnetized in an axial magnetizing manner, wherein the magnetizing directions of the first magnetic area and the second magnetic area are opposite, and after the first sub-washer 221 and the second sub-washer 222 conduct magnetism, a central magnetic gap is formed between the first sub-washer 221 and the second sub-washer 222; the magnetizing directions of the second magnetic region and the second magnetic structure 300 are opposite, that is, the magnetizing directions of the magnets of the second magnetic region and the second magnetic structure 300 are opposite, so that a side magnetic gap can be formed between the second magnetic region of the second magnetic structure 300 and the first magnetic structure 200 and between the second sub-washer 222. The central gap is formed between the first sub-washer 221 and the second sub-washer 222, and under the magnetic conduction effect of the washers, the magnetic induction lines of the magnetic field of the central magnetic gap H are distributed more densely, which is beneficial to ensuring the high-pitch performance of the sounding device.

In addition, the second sub-washer 222 may be composed of a plurality of arc-shaped portions, the plurality of arc-shaped portions may be tightly fitted in the circumferential direction to form a ring shape, or may be distributed at intervals in the circumferential direction to form a ring-like shape, and the second sub-washer 222 may also be an integrated ring-shaped structure; similarly, the second magnetic structure 300 is also disposed with reference to the second sub-washer 222.

Without loss of generality, as shown in fig. 3 to 7, the second magnetic circuit structure 300 includes a second magnet 310 and a second washer 320, the second magnet 310 includes two semi-ring magnets fixedly connected to the magnetic conductive plate 110, and the second washer 320 is fixedly connected to a side of the second magnet 310 away from the magnetic conductive plate 110. The magnetizing direction of the second magnet 310 is opposite to that of the second magnetic area, under the magnetic conduction effect of the second washer 320 and the second washer 222, a side magnetic gap L is formed between the second washer 320 and the second washer 222, the magnetic field distribution is uniform and dense, the bass voice coil 610 is at least partially arranged relative to the first magnet 210, and the bass voice coil 610 can penetrate through the space to improve the magnetic field utilization rate of the side magnetic gap L, so that the bass performance of the sounding device is guaranteed. It should be noted that, in a case that is not specifically described, an axial direction of a structure in the sounding device is a vibration direction of the tweeter diaphragm 500 and the woofer diaphragm 620, a radial direction thereof is parallel to an extending direction of the magnetic conductive plate 110, and a circumferential direction thereof is positioned with reference to the axial direction and the radial direction.

Further, in this embodiment, the diameter of the first magnetic region is smaller than or equal to the loop width of the second magnetic region. So, can make the area of second magnetic domain bigger, can promote the magnetic field intensity of second magnetic domain, be favorable to taking into account center magnetic gap H and limit magnetic gap L's electroacoustic conversion efficiency to ensure the high pitch performance and the bass performance of sound production device. Of course, in other embodiments, the diameter of the first magnetic region is larger than the loop width of the second magnetic region, and the size relationship between the diameter of the first magnetic region and the loop width of the second magnetic region may be adjusted according to different requirements of acoustic performance.

Further, in this embodiment, as shown in fig. 2, 5 and 7, the first magnet 210 is of an integral structure, and the first magnet 210 is further formed with a first non-magnetic region disposed between the first magnetic region and the second magnetic region, so that the installation convenience of the first magnet 210 during production and assembly is improved, and the production efficiency of the sound generating device is further improved.

Further, in this embodiment, the treble voice coil 400 is disposed corresponding to the first nonmagnetic area, and the loop width of the first nonmagnetic area is smaller than the loop width of the treble voice coil 400. Therefore, the magnetic field strength of the first sub washer 221 and the second sub washer 222 is improved, so that the acting force of the magnetic field of the central magnetic gap on the high-pitch coil is improved, the electro-acoustic conversion efficiency of the central magnetic gap H is improved, and the high-pitch performance of the sounding device is improved.

In an embodiment, as shown in fig. 3, 4 and 6, the first magnet 210 includes a first sub-magnet 211 and a second sub-magnet 212, which are separately disposed, the second sub-magnet 212 is disposed outside the first sub-magnet 211, the first magnetic region is formed on the first sub-magnet 211, and the second magnetic region is formed on the second sub-magnet 212. Like this, be favorable to promoting the magnetic field intensity of first sub-china 221 and the sub-china 222 of second, promote the effort of the magnetic field of central magnetic gap H to the high pitch coil from this, and make the electro-acoustic conversion efficiency of central magnetic gap H promote to promote the high pitch performance of vocal device.

Further, in the present embodiment, a gap between the first sub-magnet 211 and the second sub-magnet 212 is smaller than a gap between the first sub-washer 221 and the second sub-washer 222. Like this, need form between first sub-china 221 and the sub-china 222 of second and insert the clearance of establishing for high-pitched voice coil 400, first sub-magnet 211 and the sub-magnet 212 of second can be closer to the setting, when the maximize utilizes sounder inner space, can also promote the magnetic field intensity between first sub-china 221 and the sub-china 222 of second, also promote the electro-acoustic conversion efficiency of center magnetic gap H, are favorable to promoting the high tone performance of sounder. The first sub-magnet 211 and the second sub-magnet 212 are preferably tightly fitted, that is, the smaller the gap between the two is, the better the high-pitch performance of the sound generating device is improved.

Further, in the present embodiment, as shown in fig. 3 to fig. 6, the sound-producing device further includes a cover 700, an outer periphery of the cover 700 is connected to the first magnetic structure 200, the high-pitched diaphragm 500 is accommodated between the cover 700 and the first magnetic structure 200, the sound outlet hole 101 is opened in the cover 700, and the first fixing portion 612 is fixed to a side of the cover 700 away from the high-pitched diaphragm 500. So, bass vibrating diaphragm 620 can install on lid 700 steadily to, because the separation effect of lid 700, the air vibration that treble vibrating diaphragm 500 arouses can not disturb bass vibrating diaphragm 620, and the air vibration that bass vibrating diaphragm 620 arouses also can not disturb treble vibrating diaphragm 500, is favorable to guaranteeing the independence between the high pitch sound production of sound production device and the bass sound production, with the acoustic performance of further guarantee sound production device.

Further, the cover 700 is made of a magnetic conductive material, please refer to fig. 9 and 10 together, and fig. 9 and 10 are magnetic field simulated cloud charts of the sound generating device with the same structure when the cover 700700 is magnetic conductive and non-magnetic conductive, respectively, where a low sound BL (power coupling factor) is 0.56521, a high sound BL (power coupling factor) is 0.22983, a low sound BL is 0.55447, and a high sound BL is 0.21978, which means that the cover 700700 is magnetic conductive, which is beneficial to increase the magnetic field strength of the center magnetic gap and the side magnetic gap, so as to increase the high sound BL and the low sound BL of the sound generating device, and improve the acoustic performance of the sound generating device.

Further, in this embodiment, as shown in fig. 4, the sound outlet hole 101 is disposed at a central position of the cover 700, the cover 700 is provided with a supporting portion 703 around an outer peripheral side of the sound outlet hole 101, and the first fixing portion 612 of the bass diaphragm 620 is fixedly coupled to the supporting portion 703. So, can promote the connection stability of bass vibrating diaphragm 620 and lid 700 to further ensure the high pitch sound production of sound production device and the independence between the bass sound production, with further ensure the high pitch performance and the bass performance of sound production device. Without loss of generality, the first fixing portion 612 is fixed to the supporting portion 703 by means of gluing.

In one embodiment, as shown in fig. 3 to 5, the sound outlet 101 is a tubular structure extending along the vibration direction of the tweeter 500, and one end of the sound outlet 101 near the tweeter 500 is provided with the support portion 703 surrounding the sound outlet 101. That is, the hole wall of the sound outlet hole 101 is protruded from the supporting portion 703, so that the positioning and installation of the first fixing portion 612 of the bass diaphragm 620 can be facilitated, which is beneficial to improving the assembly convenience of the sound generating device and improving the production efficiency of the audio device.

In an embodiment, as shown in fig. 6, the upper surface of the cover 700 is a planar structure, the sound outlet hole 101 is a hole-shaped structure disposed at the center of the upper surface of the cover 700, and the support portion 703 is formed in a region of the upper surface of the cover 700 around the sound outlet hole 101. That is, the sound outlet hole 101 penetrates through the supporting portion 703 from the surface of the cover 700 near the side of the magnetic conductive plate 110, which is beneficial to simplifying the structure of the cover 700, facilitating the production of the cover 700, and further reducing the axial dimension of the sound generating device, so as to further facilitate the installation of the sound generating device in the audio device.

In one embodiment, as shown in fig. 2 to fig. 7, the sounding device further includes an auxiliary magnet 800 disposed on a side of the first magnetic circuit structure 200 away from the magnetic conductive plate 110, and the tweeter diaphragm 500 is accommodated between the first magnetic circuit structure 200 and the auxiliary magnet 800. Like this, can adjust the direction of magnetizing of auxiliary magnet 800, specifically, the magnetic induction line trend between the inside or first magnetic circuit 200 of the magnetic field influence of accessible auxiliary magnet 800 and the second magnetic circuit 300 to can correspond the magnetic field intensity that promotes central magnetic gap H or limit magnetic gap L, in order to correspond the high pitch performance or the bass performance that promote sound production device. It can be understood that the side magnetic gap L and the central magnetic gap H are both formed in relation to the first magnetic structure 200, and therefore, when the electro-acoustic conversion efficiency of the side magnetic gap L or the central magnetic gap H needs to be adjusted, adjusting the first magnetic structure 200 and the second magnetic structure 300 may cause a large change in the other magnetic gap, and many times, the first magnetic structure 200 and the second magnetic structure 300 need to be adjusted adaptively at the same time, which results in a large workload of adjustment and verification, and adjusting the auxiliary magnet 800 does not involve adjusting the main magnetic structure, and the magnetic field strength of the central magnetic gap H or the side magnetic gap L can be adjusted very conveniently, so as to obtain the required electro-acoustic conversion efficiency. From this, when new products research and development, can with the utility model discloses a magnetic circuit structure adaptability is used to in the conversion efficiency of the magnetic circuit of adjustment high pitch unit and bass unit, thereby promote the new products research and development efficiency of polycell audio equipment.

In one embodiment, as shown in fig. 7, the auxiliary magnet 800 is opened with the sound outlet 101, and the first fixing portion 612 is connected to a side of the auxiliary magnet 800 away from the high-pitched diaphragm 500. So, because the separation effect of auxiliary magnet 800, the air vibration that treble vibrating diaphragm 500 arouses can not produce the interference to treble vibrating diaphragm 620, and the air vibration that bass vibrating diaphragm 620 arouses also can not produce the interference to treble vibrating diaphragm 500, is favorable to further guaranteeing the independence between the high pitch and the bass of sound production device to further guarantee the high pitch performance and the bass performance of sound production device.

In one embodiment, as shown in fig. 3 to 6, the auxiliary magnet 800 is disposed on a side of the cover 700 close to the magnetic conductive plate 110, and is provided with a communication hole 801 for communicating with the sound outlet hole 101. Further, in this embodiment, as shown in fig. 4 and 7, the cover 700 is further provided with a mounting portion 704 for fixedly mounting the auxiliary magnet 800, the mounting portion 704 is located on a side of the supporting portion 703 away from the low-pitched diaphragm 620, and a height difference is formed between the mounting portion 704 and the supporting portion 703. Thus, the mounting portion 704 can be used for fixing and mounting the auxiliary magnet 800, which is beneficial to ensuring the structural stability of the sounding device. Of course, in other embodiments, the auxiliary magnet 800 may be mounted on the side of the second sub-washer 222 away from the magnetic conduction plate 110, so as to ensure that there is enough space between the auxiliary magnet 800 and the first washer 220, and the vibration of the high-pitch diaphragm 500 is not interfered.

Further, as shown in fig. 3, in this embodiment, a mounting ring protrusion 223 is disposed on one side of the second sub-washer 222 close to the high-pitched diaphragm 500, the mounting ring protrusion 223 is disposed at an edge position of the second sub-washer 222, and an outer periphery of the high-pitched diaphragm 500 is fixedly connected to the mounting ring protrusion 223. Optionally, the mounting ring projection 223 is integrally formed by the second sub-washer 222, and the mounting ring projection 223 is a structure that is convex in a direction close to the high-pitched diaphragm 500; optionally, the mounting ring projection 223 is a structure independent from the second sub-washer 222, and the mounting ring projection 223 is disposed at an edge position of the second sub-washer 222. So, at the inboard space of the mounting ring protruding 223, can have the clearance between high pitch vibrating diaphragm 500 and second sub-washer 222 and first sub-washer 221, this clearance can cover the amplitude of high pitch vibrating diaphragm 500 to make the vibration of high pitch vibrating diaphragm 500 not disturbed, thereby ensure the high pitch performance of sound production device.

Further, as shown in fig. 3, in this embodiment, an outer peripheral portion of the cover body 700 is disposed corresponding to the mounting ring protrusion 223 and fixedly connected to a side of the high-pitched sound diaphragm 500 away from the mounting ring protrusion 223, a limiting ring protrusion 224 protruding from the mounting ring protrusion 223 in a direction away from the magnetic conductive plate 110 is connected to an outer periphery of the mounting ring protrusion 223, and the cover body 700 is limited at an inner side of the limiting ring protrusion 224. So, be favorable to promoting the installation stability of lid 700 on the sub-china department 222 of second to the structural stability of sound production device is ensured, in addition, spacing collar 224 still can provide the positioning action when assembling lid 700, is favorable to promoting the assembly convenience of lid 700, thereby can promote the assembly convenience of sound production device.

In one embodiment, the auxiliary magnet 800 is formed with a single magnetic region.

Optionally, the magnetization direction of the single magnetic region is the same as the magnetization direction of the first magnetic region. Referring to fig. 8 and 11 together, the structure of the sound generating device corresponding to fig. 8 and 11 is different in that the structure corresponding to fig. 8 is not provided with the auxiliary magnet 800, the structure corresponding to fig. 11 is provided with the auxiliary magnet 800, and the auxiliary magnet 800 is formed with the single magnetic zone as described above, wherein the low tone BL is 0.56921, the high tone BL is 0.1811, the low tone BL is 0.5802, and the high tone BL is 0.138523 in fig. 8. . Therefore, under the action of the auxiliary magnet 800, the magnetic induction lines of the side magnetic gap L are increased, more magnetic induction lines can penetrate through the bass voice coil 610, the bass BL is obviously improved, the improvement of the sensitivity of a bass unit is facilitated, and when the whole machine is debugged and the bass performance needs to be improved, the magnetizing mode can be adopted.

Optionally, the magnetization direction of the single magnetic region is the same as the magnetization direction of the second magnetic region. Referring to fig. 8 and 9 together, the structure of the sound generating device corresponding to fig. 8 and 9 is different in that the structure corresponding to fig. 8 is not provided with the auxiliary magnet 800, the structure corresponding to fig. 9 is provided with the auxiliary magnet 800, and the auxiliary magnet 800 is formed with the single magnetic region as described above, wherein the low tone BL is 0.56921, the high tone BL is 0.1811, the low tone BL is 0.56521, and the high tone BL is 0.22983 in fig. 8. Therefore, under the effect of the auxiliary magnet 800, the magnetic induction lines of the central magnetic gap H are increased, more magnetic induction lines can penetrate through the high-pitch voice coil 400, the high-pitch BL is obviously improved, the electro-acoustic conversion efficiency of the high-pitch unit is improved, and when the high-pitch performance needs to be improved during the debugging of the whole machine, the magnetizing mode can be adopted

Further, in the present embodiment, the orthographic projection of the central magnetic gap H is located within the area of the orthographic projection of the auxiliary magnet 800. The orthographic projection of the central magnetic gap H refers to a gap between the projections of the first sub washer 221 and the second sub washer 222 on the magnetic conductive plate 110, and the orthographic projection of the auxiliary magnet 800 refers to the projection of the auxiliary magnet 800 on the magnetic conductive plate 110. In this way, the auxiliary magnet 800 may be provided with both a portion facing the first magnetic region at the center position and a portion facing the second magnetic region at the peripheral position, so that the auxiliary magnet 800 may be suitable for single-region magnetization in both cases, specifically, when the auxiliary magnet 800 is magnetized in a direction opposite to the first magnetic region, the magnetic induction line at the center position of the auxiliary magnet 800 may be connected to the magnetic induction line of the second magnetic region to increase the magnetic induction line at the center magnetic gap H, so that more magnetic induction lines may pass through the high pitch voice coil 400; when the auxiliary magnet 800 is magnetized in the opposite direction to the second magnetic region, the magnetic induction lines of the peripheral side portion of the auxiliary magnet 800 can be connected to the magnetic induction lines of the second magnetic circuit structure 300 to increase the magnetic induction lines at the side magnetic gap L, so that more magnetic induction lines pass through the bass voice coil 610.

In one embodiment, the auxiliary magnet 800 is formed with dual magnetic regions including a third magnetic region opposite to the first magnetic region and a fourth magnetic region opposite to the second magnetic region, the third magnetic region and the first magnetic region being magnetized in opposite directions, and the fourth magnetic region and the second magnetic region being magnetized in opposite directions. In this way, the auxiliary magnet 800 can also have a portion facing the first magnetic section at the center position and a portion facing the second magnetic section at the peripheral position, and the amounts of magnetization of the third and fourth magnetic sections can be adjusted to meet different adjustment requirements for the high pitch BL and the low pitch BL. Referring to fig. 8 and 12 together, the structure of the sound generating device corresponding to fig. 8 and 12 is different in that the structure corresponding to fig. 8 is not provided with the auxiliary magnet 800, the structure corresponding to fig. 12 is provided with the auxiliary magnet 800, and the auxiliary magnet 800 is formed with the dual magnetic regions, the magnetizing directions of the dual magnetic regions are as described above, wherein the low tone BL corresponding to fig. 8 is 0.56921, the high tone BL is 0.1811, the low tone BL corresponding to fig. 12 is 0.57533, and the high tone BL is 0.25425. It can be seen that the third magnetic field and the fourth magnetic field that auxiliary magnet 800 set up can influence the magnetism line trend of feeling of central magnetic gap H and limit magnetic gap L department to make more magnetism feel the line and pass high pitch voice coil 400 and bass voice coil 610, high pitch BL and bass BL homoenergetic promote to some extent, wherein the promotion of high pitch BL is more showing, when the complete machine debugging, when needing to promote high pitch performance and bass performance simultaneously, can adopt this kind to fill the magnetism mode.

In this embodiment, optionally, as shown in fig. 3 and 5, the auxiliary magnet 800 is provided as a unitary structure, and the auxiliary magnet 800 is further formed with a second non-magnetic region disposed between the third magnetic region and the fourth magnetic region, so as to facilitate the installation of the auxiliary magnet 800 during production and assembly, thereby improving the production efficiency of the sound-generating device.

In this embodiment, optionally, as shown in fig. 4 and 6, the auxiliary magnet 800 includes a first auxiliary magnet and a second auxiliary magnet 810 annularly disposed outside the first auxiliary magnet, the third magnetic region is formed on the first auxiliary magnet, and the fourth magnetic region is formed on the second auxiliary magnet 810 as shown in fig. 3 to 6. In this embodiment, the auxiliary magnet 800 includes a first auxiliary magnet and a second auxiliary magnet 810 that are separately disposed, and it is only necessary to magnetize a single magnetic region to the first auxiliary magnet and the second auxiliary magnet 810, respectively, so that the magnetizing operation is simple, the material quality inspection is convenient, and the material supply of the first auxiliary magnet and the second auxiliary magnet 810 is guaranteed, thereby being beneficial to ensuring the production of sounding devices. The gap between the first auxiliary magnet and the second auxiliary magnet 810 is set opposite to the central magnetic gap, and the first auxiliary magnet and the second auxiliary magnet 810 are closely matched, that is, the smaller the gap between the first auxiliary magnet and the second auxiliary magnet 810 is, the better the gap is, the better the acoustic performance of the sound production device is improved.

In an embodiment, as shown in fig. 3, the bass diaphragm 620 includes a first corrugated rim 622 and a second corrugated rim 623 annularly disposed outside the first corrugated rim 622, the first fixing portion 612 is disposed on an inner periphery of the first corrugated rim 622, and the second fixing portion 613 is disposed on an outer periphery of the second corrugated rim 623; first dog-ear 622 with be formed with plane vibration portion 624 between the second dog-ear 623, sound production device is still including inserting and locating the bass voice coil 610 in limit magnetic gap, bass voice coil 610 locates being close to of bass vibrating diaphragm 620 one side of treble vibrating diaphragm 500 is connected in plane vibration portion 624. In this embodiment, the bass diaphragm 620 adopts a double-folded ring structure, so that the compliance of the bass diaphragm 620 is large enough, and the acoustic performance of a higher frequency region in bass can be considered, and the acoustic performance of each frequency band of bass can be balanced. And plane vibration portion 624 can be convenient for bass voice coil 610 and install, is favorable to promoting the assembly efficiency of vocal device, and can supply bass voice coil 610 to stabilize the installation, is favorable to ensureing the bass performance of vocal device.

In one embodiment, the first tab 622 and the second tab 623 are integrally formed. So, bass vibrating diaphragm 620's processing technology is simple, can possess higher machining efficiency, and the uniformity is good, is favorable to ensuring the bass performance of sound production device. The first and

second flanges

622 and 623 may be integrally formed of the same material or different materials, and the planar vibrating portion 624 is integrally formed with the first and

second flanges

622 and 623.

In an embodiment, the first folding ring 622 and the second folding ring 623 are separately disposed. Thus, parameters of the first corrugated rim 622 or the second corrugated rim 623 can be independently adjusted, and particularly, materials of the first corrugated rim 622 and the second corrugated rim 623 can be freely matched conveniently, so that the bass diaphragm 620 is adjusted to be appropriate in compliance to achieve the required bass performance.

Further, in the present embodiment, the outer circumference of the first edge 622 is formed with a first flat portion, and the inner circumference of the second edge 623 is formed with a second flat portion corresponding to the first flat portion, and the first flat portion and the second flat portion are overlapped to form the planar vibration portion 624. In this way, the connection stability of the first tab 622 and the second tab 623 can be improved, wherein the first planar portion and the second planar portion are adhesively fixed to fix the first tab 622 and the second tab 623 together. In other embodiments, of course, it is also possible,

further, in this embodiment, as shown in fig. 7, a reinforcing member 625 is disposed on the planar vibrating portion 624, the reinforcing member 625 is annular, two opposite peripheral sides of the reinforcing member 625 are respectively connected to the first flange 622 and the second flange 623, and the bass voice coil 610 is connected to the reinforcing member 625. The setting of reinforcement 625 for the thickness increase of plane vibration portion 624 is favorable to promoting the well high frequency tone quality of bass, and wherein, the material of reinforcement 625 can be almag, and reinforcement 625 can be connected in plane vibration portion 624 through the mode of bonding. In this embodiment, the reinforcing member 625 is disposed on the side of the planar vibration portion 624 close to the tweeter diaphragm 500, and the bass voice coil 610 is connected to the reinforcing member 625 by bonding. Of course, in other embodiments, the reinforcing member 624 may be disposed on a side of the planar vibration portion 624 away from the tweeter diaphragm 500, and the bass voice coil 610 may be connected to a side of the planar vibration portion 624 close to the tweeter diaphragm 500.

Further, in this embodiment, the first and second folding rings 622 and 623 are protruded in a direction away from the tweeter diaphragm 500. Therefore, interference between the first and

second flanges

622 and 623 and components in the housing 120 can be avoided, and too many avoiding holes 621 in the housing 120 can not be reserved, which is beneficial to miniaturization design of the sound generating device. Of course, in other embodiments, the first and second hinge rings 622 and 623 may also be protruded toward the treble diaphragm 500.

Further, in the present embodiment, the curvature of the first tab 622 gradually increases in the outward and inward direction, and the curvature of the second tab 623 gradually decreases in the outward and inward direction. That is, in the direction close to the planar vibration portion 624, the inclination degree of the first and

second hinges

622 and 623 is in a tendency of slowing down, so that the compliance of the low-pitched diaphragm 620 and the internal damping of the low-pitched diaphragm 620 can be increased, thereby ensuring the acoustic performance of the generating device.

Alternatively, the material of the first tab 622 and the material of the second tab 623 may be an LCP (Liquid Crystal Polymer) material or a PEN (polyethylene-naphthalate) material. LCP material mechanical properties is excellent, and intensity is high, and performance such as dimensional stability, spontaneous flame retardant nature, processability are good, and the heat resistance is good, and the coefficient of thermal expansion is low, and PEN material has superior physical mechanical properties, heat resistance, mechanical properties, gas barrier property, and first dog-ear 622 and second dog-ear 623 adopt above-mentioned material to make, and the homoenergetic makes the sound production device have sufficient low frequency sensitivity, is favorable to promoting audio equipment's low frequency response. The first folding ring 622 and the second folding ring 623 can be made of the same material or different materials regardless of being integrally formed or separately arranged.

Further, as shown in fig. 3 and 4, in this embodiment, the cover body 700 is provided with a first avoiding portion 702 for avoiding the first folded ring 622 of the bass diaphragm 620, the first avoiding portion 702 is obliquely arranged with respect to the mounting portion 704, the structure of the auxiliary magnet 800 corresponding to the first avoiding portion 702 is adapted to the first avoiding portion 702, and the auxiliary magnet 800 is provided with a third avoiding portion 802 corresponding to the second avoiding portion 803, so as to avoid interference with vibration of the bass diaphragm 620. Thus, the auxiliary magnet 800 can be disposed to be more closely attached to the cover body 700, and when the auxiliary magnet 800 and the cover body 700 are connected in a bonding manner, the stability of connection between the auxiliary magnet 800 and the cover body 700 is improved. Of course, in other embodiments, as shown in fig. 5 and fig. 6, the auxiliary magnet 800 may not have a portion that is disposed opposite to the portion of the first corrugated rim 622 of the bass diaphragm 620 that extends obliquely toward the magnetic conductive plate 110.

Further, as shown in fig. 3 and 4, a second avoiding portion 803 for avoiding a loop portion of the high pitch diaphragm 500 is provided at a side of the auxiliary magnet 800 close to the high pitch diaphragm 500. Specifically, the second portion 803 of dodging is the structure that supplementary magnet 800 set up towards the direction slope that deviates from high pitch vibrating diaphragm 500 for the surface that high pitch vibrating diaphragm 500 is close to, so, can avoid supplementary magnet 800 to produce its interference when the direction vibration of magnetic conduction board 110 is kept away from to the book ring portion of high pitch vibrating diaphragm 500 to the high pitch performance of guarantee sound production device. Of course, in other embodiments, as shown in fig. 5 and 6, the auxiliary magnet 800 may not have a portion disposed opposite to the edge portion of the tweeter diaphragm 500.

The utility model discloses still provide an audio equipment, this audio equipment includes sound production device, and this sound production device's concrete structure refers to above-mentioned embodiment, because this audio equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The audio device may be a sound box, an earphone, a mobile phone or a computer.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A sound producing device, comprising:

2. The device of claim 1, further comprising a cover, wherein the periphery of the cover is connected to the first magnetic structure, the high-pitched diaphragm is accommodated between the cover and the first magnetic structure, the cover is opened with the sound outlet, and the first fixing portion is fixed to a side of the cover away from the high-pitched diaphragm.

3. The sounding device as claimed in claim 2, wherein the sound outlet is disposed at a center of the cover, the cover has a support portion surrounding an outer periphery of the sound outlet, and the first fixing portion of the bass diaphragm is fixedly coupled to the support portion.

4. The sound-producing device according to claim 3, wherein the sound-emitting hole is a tubular structure extending in a vibration direction of the tweeter diaphragm, and one end of the sound-emitting hole near the tweeter diaphragm is provided with the support portion disposed around the sound-emitting hole, or,

the upper surface of the cover body is of a plane structure, the sound outlet holes are of hole-shaped structures arranged at the center of the upper surface of the cover body, and the area of the upper surface of the cover body around the sound outlet holes forms the supporting part.

5. The sound-producing device of claim 2, wherein the cover is made of a magnetically conductive material.

6. The device of claim 1, further comprising an auxiliary magnet disposed on a side of the first magnetic structure away from the magnetic conductive plate, wherein the tweeter diaphragm is received between the first magnetic structure and the auxiliary magnet, the auxiliary magnet defines the sound outlet, and the first fixing portion is connected to a side of the auxiliary magnet away from the tweeter diaphragm.

7. The sound production device of any one of claims 1 to 6, wherein the bass diaphragm includes a first corrugated rim and a second corrugated rim annularly disposed outside the first corrugated rim, the first fixing portion is disposed on an inner circumference of the first corrugated rim, and the second fixing portion is disposed on an outer circumference of the second corrugated rim;

first book ring with the second is rolled over and is formed with plane vibration portion between the ring, the sound production device is still including inserting and locating the bass voice coil loudspeaker voice coil in limit magnetic gap, the bass voice coil loudspeaker voice coil is located be close to of bass vibrating diaphragm one side of high pitch vibrating diaphragm, and be connected to plane vibration portion.

8. The sounder device according to claim 7, wherein the first and second collars are provided separately; or the first folding ring and the second folding ring are integrally formed.

9. The sound production device as claimed in claim 8, wherein the first and second rims are provided as separate bodies, the first rim has a first flat portion formed on an outer periphery thereof, the second rim has a second flat portion formed on an inner periphery thereof corresponding to the first flat portion, and the first and second flat portions are overlapped to form the planar vibration portion.

10. The sound producing device as claimed in claim 7, wherein the planar vibrating portion is provided with a reinforcing member, the reinforcing member is annular, opposite peripheral sides of the reinforcing member are connected to the first and second flanges, respectively, and the bass voice coil is connected to the reinforcing member;

and/or the first folding ring and/or the second folding ring are/is convexly arranged in the direction departing from the high-pitch diaphragm;

and/or the curvature of the first folding ring gradually increases in the direction from outside to inside;

and/or the curvature of the second folding ring gradually decreases in the direction from outside to inside;

and/or the material of the first folding ring and/or the material of the second folding ring is LCP material or PEN material.

11. Audio device, characterized in that it comprises a sound-producing device according to any one of claims 1 to 10.

12. The audio device of claim 11, wherein the audio device is a headset.