CN213694122U

CN213694122U - Sound production device and electronic equipment

Info

Publication number: CN213694122U
Application number: CN202022996745.1U
Authority: CN
Inventors: 李�杰; 刘华伟; 赵国栋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-07-13
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a sounder and electronic equipment, wherein, sounder includes magnetic yoke, shell and protection network, the shell includes casing portion and magnetic conduction board portion, casing portion and magnetic conduction board portion are the metalwork of an organic whole structure, the casing portion is the ring-type, the periphery of casing portion connect in the periphery of magnetic yoke, the magnetic conduction board portion locates the inward flange of casing portion, and extend along the circumference of casing portion, the clearance between the periphery of casing portion and the periphery of magnetic yoke forms the leakage mouth; the protective net covers the leakage opening, a plurality of air holes are formed in the position, corresponding to the leakage opening, of the protective net, and the protective net is a metal piece. The utility model discloses a sounding device has good radiating effect and higher yield.

Description

Sound production device and electronic equipment

Technical Field

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

Background

A sound-generating device is an important acoustic component in electronic equipment, which is a transducer device that converts an electrical signal into an acoustic signal. In the current sound production device structure, in order to realize the rear sound cavity full-filling technology, a cloth net is generally arranged at a leakage port of the sound production device, and the cloth net and a shell of the sound production device are integrally injection-molded or fixed in a bonding mode. However, the shape of the cloth net is difficult to maintain, and when the cloth net is integrally injection-molded or bonded, the cloth net is easy to be dislocated, and the heat dissipation effect and the strength of the plastic shell are not good, so that the overall performance of the sound production device is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sounding device aims at solving the technical problem of radiating effect and product yield in the current sounding device.

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

a magnetic yoke;

the shell comprises a shell body and a magnetic conducting plate part, the shell body and the magnetic conducting plate part are metal pieces of an integrated structure, the shell body is annular, the periphery of the shell body is connected to the periphery of the magnetic conducting yoke, the magnetic conducting plate part is arranged on the inner edge of the shell body and extends along the circumferential direction of the shell body, and a leakage port is formed in a gap between the periphery of the shell body and the periphery of the magnetic conducting yoke;

the protective net covers the leakage opening, a plurality of air holes are formed in the position, corresponding to the leakage opening, of the protective net, and the protective net is a metal piece.

In an optional embodiment, the sound production device further includes a vibration system, the vibration system includes a diaphragm, the diaphragm is disposed on a surface of the housing portion away from the magnetic yoke, and an edge of the diaphragm wraps a part of a peripheral side surface of the housing portion.

In an alternative embodiment, the diaphragm includes a central portion, an edge portion disposed around the central portion, and a corrugated portion disposed between the central portion and the edge portion, where the edge portion has a first section and a second section, the first section is attached to a surface of the housing portion facing away from the magnetic yoke, and the second section is attached to a portion of a peripheral surface of the housing portion.

In an optional embodiment, the housing portion includes a first body and a plurality of first blocking walls, the first body is annular, the plurality of first blocking walls are disposed on a surface of the first body facing the magnetic conductive yoke and are clamped with the magnetic conductive yoke, the first blocking walls and the first body are a metal piece of an integrated stamping structure, and the leakage port is formed by two adjacent first blocking walls.

In an optional embodiment, the magnetic yoke includes a second body and a plurality of second blocking walls disposed on a surface of the second body, and the second blocking walls extend toward the housing and are sandwiched between the two first blocking walls; and/or the presence of a gas in the gas,

the sound production device is of a square structure, the four corners of the shell are provided with the first blocking walls, and the long edges of the shell are provided with at least two first blocking walls at intervals.

In an alternative embodiment, the sound production device is of a square structure;

two short sides of the sounding device are respectively provided with one leakage port, and each leakage port corresponds to one protective net; or the like, or, alternatively,

two minor faces of the sounding device are respectively provided with one leakage port, two long edges are respectively provided with two leakage ports, the leakage ports are close to the two ends of the sounding device in the length direction on the long edges, one of the two leakage ports is close to the two ends of the sounding device on the long edges, and the leakage ports correspond to the protective net.

In an optional embodiment, the casing portion is provided with an insertion notch on a hole wall of the leakage port, and the protective net is inserted into the insertion notch.

In an optional embodiment, the protective net comprises a covering section and a connecting section, the covering section and the connecting section are both metal pieces, the connecting section is connected to the surface of the magnetic yoke deviating from the shell part, the covering section covers the leakage opening, and the covering section is provided with a plurality of air holes.

In an optional embodiment, the sounder device further comprises a vibration system and a magnetic circuit system, wherein the magnetic circuit system comprises a central magnet and side magnets arranged around the central magnet, and a magnetic gap is formed between the central magnet and the side magnets by intervals;

the vibration system also comprises a voice coil and a support piece, wherein the voice coil extends into the magnetic gap; the support piece is electrically connected to one end of the voice coil close to the magnetic yoke;

the magnetic yoke has seted up the hole of stepping down corresponding the position of piece, the linkage segment lid fits the hole of stepping down.

The utility model also provides an electronic equipment, which comprises a housin, the casing is inside to have the holding chamber, still includes as above sound production device, sound production device installs the holding intracavity.

The utility model discloses sound production device among the technical scheme includes magnetic yoke and shell, and both cooperate to connect to be formed with leakage port, set up the protection network in leakage port department, and the protection network is the metalwork, on the one hand because the metal has great intensity and hardness, even so thinner protection network also can have stable form, guarantees the stability of protection network and shell or magnetic yoke, avoids producing the dislocation to improve the yield of product. On the other hand, the protective net has high strength, and can be used as a part of the shell to protect structures such as a vibration system, a magnetic circuit system and the like in the shell. Simultaneously, the shell includes casing portion and magnetic conduction board portion, both are the metalwork of a body structure to make the whole metal material that is of shell, metal material has that heat conduction speed is fast, the characteristics that the radiating effect is good, combines together with the protection network and the magnetic conduction yoke of metal material, make the whole part that exposes of sounder be the metal material that heat dispersion is good, thereby can possess higher whole intensity outside, can also make inside heat in time give off, temperature resistance is better, prolongs its life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art 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 an exploded view of an embodiment of the sound device of the present invention;

FIG. 2 is a cross-sectional view of the sound device of FIG. 1;

FIG. 3 is a schematic view of the housing of the sound device of FIG. 1;

FIG. 4 is a schematic view of the housing shown in FIG. 3 from another perspective;

fig. 5 is a schematic structural view of a protective net in the sound production device shown in fig. 1;

FIG. 6 is a schematic view of a magnetic yoke of the sound producing device of FIG. 1;

fig. 7 is a schematic structural view of another embodiment of the sound production device of the present invention.

Fig. 8 is a schematic structural view of the sound producing device shown in fig. 7 from another perspective.

The reference numbers illustrate:

100	sound production device	513	Abdication gap
				100a	Leakage port		53	Second retaining wall
10	Outer casing	70	Protective net
				11	Casing body	70’	Protective net
111	First body	71	Connecting segment
				113	First retaining wall	73	Covering segment
1131	Plug notch	73’	Covering segment
				13	Magnetic conductive plate part	731	Air vent
131	Edge magnetic conduction plate	90	Vibration system
				30	Magnetic circuit system	91	Vibrating diaphragm
30a	Magnetic gap	911	Center part
				31	Center magnet	913	Folded ring part
33	Edge magnet	915	Edge part
				35	Central magnetic conduction plate	9151	First stage
50	Magnetic conductive yoke	9153	Second section
				51	Second body	93	Voice coil
511	Hole of stepping down	95	Support piece

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 accompanying 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.

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, 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 or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sounding device 100.

Referring to fig. 1, fig. 2 and fig. 7, in an embodiment of the present invention, the sound generating device 100 includes:

a yoke 50;

the magnetic conductive housing 10 includes a housing portion 11 and a magnetic conductive plate portion 13, the housing portion 11 and the magnetic conductive plate portion 13 are metal parts of an integrated structure, the housing portion 11 is annular, the periphery of the housing portion 11 is connected to the periphery of the magnetic conductive yoke 50, the magnetic conductive plate portion 13 is disposed on the inner edge of the housing portion 11 and extends along the circumferential direction of the housing portion 11, and a leakage opening 100a is formed in a gap between the periphery of the housing portion 11 and the periphery of the magnetic conductive yoke 50;

the protection net 70 covers the leakage opening 100a, a plurality of air holes 731 are formed in the position, corresponding to the leakage opening 100a, of the protection net 70, and the protection net 70 is a metal piece.

It is understood that the sounder device 100 includes a housing 10, a vibration system 90, and a magnetic circuit system 30, wherein the housing 10 includes a housing portion 11 and a magnetic conductive plate portion 13, the magnetic circuit system 30 includes a magnetic conductive yoke 50, and the housing portion 11 extends along an outer edge of the magnetic conductive yoke 50 in a ring shape and connects the magnetic circuit system 30 and the vibration system 90, respectively. Here, the annular housing portion 11 may be a closed annular structure or an open annular structure. The magnetic conductive plate portion 13 is provided on the inner edge of the case portion 11 and extends in the circumferential direction of the case portion 11.

The yoke 50 is provided with a central magnetic path portion and side magnetic path portions which are arranged around the periphery of the central magnetic path portion at intervals, the gap between the side magnetic path portions and the central magnetic path portion forming a magnetic gap 30a, for example, the inner magnetic path portion includes a central magnet 31 and a central magnetic conductive plate 35, the side magnetic path portion includes a side magnet 33, the side magnet 33 and the central magnet 31 are both disposed on the magnetic conductive yoke 50, the central magnetic conductive plate 35 is disposed on the central magnet 31, the periphery of the housing portion 11 is connected to the periphery of the magnetic conductive yoke 50, the housing 10, the magnetic conductive yoke 50 and the side magnet 33 are enclosed together to form a structure that is open toward the diaphragm 91, the magnetic conductive plate portion 13 is correspondingly disposed on the side magnet 33, at this time, the magnetic conductive plate portion 13 is disposed at the periphery of the central magnetic conductive plate 35 in a spaced manner, and the gap between the two and the gap between the side magnet 33 and the central magnet 31 together constitute the magnetic gap 30 a.

Vibration system 90 includes vibrating diaphragm 91 and voice coil 93, and vibrating diaphragm 91 locates the surface that casing portion 11 deviates from magnetic yoke 50, and the one end of voice coil 93 is fixed in vibrating diaphragm 91, and the other end stretches into foretell magnetic gap 30a, and after it lets in the alternating current, reciprocating motion about can producing in the effect atress in magnetic field to drive vibrating diaphragm 91 vibration, and then realize the sound production function.

Referring to fig. 2 to fig. 4, specifically, the magnetic conductive plate portion 13 may include a plurality of side magnetic conductive plates 131, and the plurality of side magnetic conductive plates 131 are disposed at intervals on an inner edge of the housing portion 11 along a circumferential direction thereof. In this way, the side magnetic conductive plate 131 and the housing 11 are integrated, and the magnetic conductive plate 13 not only plays a role of magnetic conduction, but also can be used as a part of the housing 10 to increase the structural strength of the housing 10, thereby protecting the internal vibration system 90 and the magnetic circuit system 30. When the sound generating device 100 is square, a side magnetic conductive plate 131 is disposed on each side of the housing 11 and corresponds to the side magnets 33. Of course, in other embodiments, the edge magnetic conductive plate 131 may also be disposed to extend in a ring shape along the circumferential direction of the housing portion 11. The end of the side magnetic conductive plate 131 away from the housing 11 may be provided with a protrusion, so as to increase the thickness of the side magnetic conductive plate 131 and improve the magnetic conductive effect.

Meanwhile, the housing portion 11 and the magnetic conductive plate portion 13 are both Metal pieces, and the material of the housing portion and the magnetic conductive plate portion may be iron, nickel, iron-nickel alloy, steel, etc., and the housing portion and the magnetic conductive plate portion may be integrally formed by stamping or may be prepared by a Metal Injection Molding (MIM) process, so that on one hand, the processing is convenient, and the subsequent assembly process is not required, thereby effectively improving the overall production efficiency of the sound generating device 100; on the other hand, the magnetic conductive plate 13 inside can transmit the heat inside in time, and the heat is dissipated to the outside in time through the metal casing 11, thereby improving the heat dissipation effect of the sound generating device 100.

This technical scheme's shell 10 includes casing portion 11 and magnetic conduction board portion 13, both are the metalwork of a body structure, thereby make shell 10 wholly be the metal material, compare in the plastics material, metal material has that heat conduction speed is fast, the characteristics that the radiating effect is good, combine together with metal material's protection network 70 and magnetic yoke 50, make the whole part that exposes of sound production device 100 be the metal material that heat dispersion is good, thereby can possess outside higher whole intensity, can also make inside heat in time give off, the temperature resistance is better, prolong its life. Meanwhile, compared with a structure combining metal and plastic, the method can save the assembly process and improve the processing efficiency.

With reference to fig. 2 and 7, in order to realize the sealed and full filling of the sound generating device 100, after the housing 11 is connected to the peripheral edge of the magnetic conductive yoke 50, a leakage opening 100a is formed in a gap between the peripheral edge of the housing 11 and the peripheral edge of the magnetic conductive yoke 50, and therefore a protective net 70 is provided to cover the leakage opening 100 a. The leakage opening 100a is located at a side of the sound generating device 100, and the protective net 70 is provided with a plurality of air holes 731 at a position corresponding to the leakage opening 100a, so that the internal space of the sound generating device 100 is allowed to keep sound pressure balance with the outside through the leakage opening 100a and the air holes 731, the vibration effect is improved, and the magnetic yoke 50 is omitted to provide a leakage hole structure. Here, the protection net 70 may be connected to one of the magnetic conductive yoke 50 and the case 10, or the protection net 70 may be connected to both the magnetic conductive yoke 50 and the case 10, thereby having high structural stability.

In the embodiment, the protective net 70 is made of metal, so that the protective net 70 made of metal has high strength and hardness, and even if the protective net 70 is thin, the protective net 70 can be ensured to have a stable shape, thereby ensuring the connection stability between the protective net 70 and the housing 10 and/or the magnetic yoke 50, avoiding the dislocation between the protective net 70 and the leakage opening 100a, and improving the yield of products. On the other hand, the protective net 70 has high strength and can be used as a part of the housing 10 to protect the vibration system 90 and the magnetic circuit system 30 in the housing 10.

Referring to fig. 1, in addition, the cross-sectional shape of the sound generating device 100 may be square, circular, or oval, and the like, which is not limited herein. Taking the sounder device 100 as a rectangular parallelepiped structure as an example, it has two long sides and two short sides, the length of the long sides is greater than that of the short sides, and the long sides and the short sides of the casing 10, the magnetic circuit system 30 and the vibration system 90 are respectively arranged corresponding to the long sides and the short sides of the sounder device 100. Here, two short sides of the sound generating device 100 are respectively provided with one leakage port 100a, and each leakage port 100a corresponds to one of the protective nets 70, so that the internal and external sound pressures are further balanced, and the acoustic effect is improved.

Referring to fig. 7 and 8, of course, in another embodiment, two short sides of the sounder 100 are respectively provided with one leakage port 100a, two long sides are respectively provided with two leakage ports 100a, the leakage ports 100a on the long sides are close to two ends of the sounder 100 in the length direction, wherein the leakage port 100a on one short side and the two leakage ports 100a on the adjacent long sides correspond to one protective net 70'.

In this embodiment, the increase of the leakage opening 100a can increase the area of the sound hole, thereby improving the acoustic effect of the sound generating device 100. At this moment, it includes the covering section 73 ' and covers section 73 and linkage segment 71 to set up protection network 70 ', protection network 70 ' is the metal piece of bending, and structural strength is high, by linkage segment 71 correspond the position bending form covering section 73 of minor face, by linkage segment 71 correspond the position bending form covering section 73 ' of long limit, this sound production device 100 only need set up two protection networks 70 ' can realize the covering of a plurality of leakage mouths 100a, when increasing the sound pressure balance, also do not increase the equipment part, improve the packaging efficiency.

Referring to fig. 2, in an embodiment, the edge of the vibrating diaphragm 91 is disposed to cover a portion of the peripheral side surface of the housing 11, and the arrangement of the structure increases a connection structure of the vibrating diaphragm 91 in the vertical direction, so as to effectively enhance the connection stability between the vibrating diaphragm 91 and the housing 11, avoid dust and moisture entering from a surface connection, improve the waterproof performance, and simultaneously, significantly increase the effective vibration area of the vibrating diaphragm 91 and improve the acoustic performance of the sound generating device 100 without changing the original size of the sound generating device 100.

Specifically, the material of the diaphragm 91 is polyether ether ketone (PEEK) or other polymer materials. The diaphragm 91 comprises a center and an edge portion 915 arranged around the center portion 911, and a corrugated portion 913 arranged between the center portion 911 and the edge portion 915, wherein the edge portion 915 has a first section 9151 and a second section 9153, the first section 9151 is attached to the surface of the housing portion 11 facing away from the magnetic yoke 50, and the second section 9153 is attached to part of the circumferential side surface of the housing portion 11.

In this embodiment, the loop part 913 may increase the deformation of the diaphragm 91, and improve the sensitivity of the diaphragm 91, and the loop part 913 may be bent toward the magnetic yoke 50. Of course, in other embodiments, the diaphragm 91 may also be a planar structure, or the ring-bending portion 913 bends toward a direction away from the magnetic yoke 50. And the edge portion 915 includes a first segment 9151 and a second segment 9153, the first segment 9151 and the second segment 9153 being connected with the surface and the peripheral side surface of the housing portion 11, respectively, increasing the connection area with the housing portion 11, thereby enhancing the structural stability. Of course, in other embodiments, the edge portion 915 may be provided with only the second segment 9153, and the edge portion 913 may be directly connected to the second segment 9153. In addition, in order to improve the sound effect, a reinforcing layer is further disposed at the center portion 911 of the diaphragm 91, and the reinforcing layer can effectively reduce the split vibration of the diaphragm 91 and reduce the noise of the sound generating device 100.

Referring to fig. 1 and 3 to 6, in order to connect the housing portion 11 and the magnetic yoke 50, the housing portion 11 includes a first body 111 and a plurality of first blocking walls 113, the first body 111 is annular, the plurality of first blocking walls 113 are convexly disposed on a surface of the first body 111 facing the magnetic yoke 50 and abut against the magnetic yoke 50, the first blocking walls 113 and the first body 111 are a metal piece with an integral stamping structure, and the leakage opening 100a is formed between two adjacent first blocking walls 113.

In this embodiment, the housing portion 11 includes a first body 111 and a plurality of first blocking walls 113. First body 111 is cyclic annular, the interior border of first body 111 is located to magnetic conduction board portion 13, and press close to a surface setting of first body 111, first fender wall 113 is protruding to be located first body 111 and keeps away from a surface setting of magnetic conduction board portion 13, this surface is towards magnetic conduction yoke 50, first fender wall 113 and the metalwork of first body 111 stamping structure as an organic whole, thereby can make casing portion 11 wholly be the metalwork, pass through punching press or MIM technology one-time processing shaping with magnetic conduction board portion 13 of metal material, and the man-hour is saved, also can increase radiating structure simultaneously, and the heat radiating effect is improved.

The first blocking walls 113 are clamped with the magnetic yoke 50, spaces between some first blocking walls 113 are used for installing the edge magnets 33, and spaces between other first blocking walls 113 form the leakage openings 100a, for example, the sounder 100 in a rectangular parallelepiped structure, two first blocking walls 113 are arranged on long sides of the housing 10, one first blocking wall 113 is arranged at each corner position of the housing 10, the edge magnets 33 on the long sides are installed between two adjacent first blocking walls 113, and the spaces between the two first blocking walls 113 on the short sides form the leakage openings 100 a. The first blocking wall 113 is provided to ensure that the leakage opening 100a is formed between the magnetic yoke 50 and the housing 10 at an interval, and the first blocking wall 113 abuts against the edge of the edge magnet 33 without forming a hole in the magnetic yoke 50, and also serves to limit the edge magnet 33. In order to facilitate the limit of the edge magnet 33, a gap may be formed in the edge magnet 33, and the first blocking wall 113 may be clamped in the gap, so that the displacement of the edge magnet 33 in the length direction and the width direction may be limited at the same time.

The leakage opening 100a may be formed by the enclosure 10, the magnetic yoke 50, and the edge magnet 33.

At least one first blocking wall 113 located at the corner of the casing 11 has a certain distance from the corner of the casing, so that the corner of the casing 11 facing the surface of the magnetic yoke 50 provides a position for the pad, and the magnetic yoke 50 has an abdicating notch 513 corresponding to the position, that is, the abdicating notch 513 is provided at the corner of the magnetic yoke 50, which is equivalent to cutting off the corner of the magnetic yoke 50, so that the lead connected to the voice coil 93 is led out and then welded to the pad at this position. Here, the bonding is performed between the pad and the case 11. Of course, in one embodiment, no bonding pads are disposed on the housing portion 11; or, when the sound generating device 100 is square, the housing portion 11 and the magnetic yoke 50 are both square, four corners of the magnetic yoke 50 are provided with the abdicating notch 513, and four corners of the housing portion 11 are provided with the mounting pad, so that the electrical connection of the voice coil 93 is more stable.

Correspondingly, the cross section of the first blocking wall 113 at the corner is substantially in a folded angle structure, and is adapted to the corner position of the magnetic yoke 50, so that the first blocking wall can abut against the edge of the abdicating notch 513 of the magnetic yoke 50, and the limit of the magnetic yoke 50 is further increased. The first blocking wall 113 on the long side may be a square column structure, and is adapted to the notch on the side magnet 33, so that the side magnet 33 is limited in both the length and width directions.

Of course, in other embodiments, the magnetic yoke 50 may extend toward the housing 11 to form a plurality of first blocking walls 113, the first blocking walls 113 may abut against or be connected to the housing 11, and a space between two adjacent first blocking walls 113 may form the leakage port 100 a.

In an alternative embodiment, the magnetic yoke 50 includes a second body 51 and a plurality of second blocking walls 53 protruding from a surface of the second body 51, and the second blocking walls 53 extend toward the housing 11 and are sandwiched between the two first blocking walls 113.

In this embodiment, a plurality of positioning structures are formed between the magnetic conductive yoke 50 and the housing portion 11, each positioning structure includes two first blocking walls 113 disposed on the housing portion 11 and a second blocking wall 53 disposed on the magnetic conductive yoke 50, the second blocking wall 53 is clamped between the two first blocking walls 113, and a gap between two adjacent positioning structures forms the leakage opening 100 a. In this structure, the first blocking walls 113 and the second blocking walls 53 are engaged with each other, and therefore, they are restrained from moving relative to each other, and the occurrence of a gap can be avoided. Of course, in other embodiments, the first blocking wall 113 may be provided on the housing portion 11, the two spaced second blocking walls 53 may be provided on the magnetic yoke 50, and the first blocking wall 113 may be inserted between the two second blocking walls 53 to form an engagement fixing structure, but the invention is not limited thereto, as long as the housing portion 11 and the magnetic yoke 50 can form a fixing limit.

In the embodiment where the leakage port 100a is additionally provided with the protection net 70', the magnetic yoke 50 is not provided with the second blocking wall 53, thereby reserving the position of the leakage port 100 a.

In order to ensure accurate alignment between the protection net 70 and the leakage opening 100a, in an alternative embodiment, the housing 11 has an insertion notch 1131 formed on a hole wall of the leakage opening 100a, and the protection net 70 is inserted into the insertion notch 1131.

In this embodiment, the surfaces of the housing 11 facing the magnetic yoke 50 are provided with insertion notches 1131, and when assembling, the protective net 70 is inserted from the side where the magnetic yoke 50 is located to the side where the housing 10 is located, the covering section 73 moves toward the housing 10 along the edge of the magnetic yoke 50 and is inserted into the insertion notches 1131 at two opposite side walls of the leakage opening 100a, so as to ensure the contact area between the protective net 70 and the housing 10, and better limit the protective net 70. When the first blocking wall 113 is disposed at the corner of the housing 11, the first blocking wall 113 forms an edge of the leakage opening 100a, so that the first blocking wall 113 is provided with the insertion notch 1131, the insertion notch 1131 faces the first blocking wall 113 at the other corner, and the insertion notch 1131 extends along the extending direction of the first blocking wall 113, so as to fix the protection net 70 inserted into the insertion notch 1131.

Since the protective net 70 is located at the outer periphery of the sound device 100, in order to prevent the overall volume of the sound device 100 from increasing, in an embodiment, the thickness of the protective net 70 is set to be less than or equal to 0.2 mm. For example, the thickness of the protection net 70 may be 0.2mm, 0.15mm, 0.1mm, etc., and the protection net 70 in this size range has a smaller thickness, which may reduce the occupation of the entire machine space.

For example, the protection net 70 is connected to the magnetic yoke 50, the protection net 70 includes a covering section 73 and a connecting section 71, the covering section 73 and the connecting section 71 are both metal pieces, the connecting section 71 is connected to the surface of the shell portion 11 deviated from the magnetic yoke 50, the covering section 73 covers the leakage opening 100a, and the covering section 73 is provided with a plurality of air holes 731.

In this embodiment, the connection section 71 and the cover section 73 are combined to form an L-shaped structure, and the connection section 71 is disposed on the surface of the magnetic yoke 50 facing away from the casing 10, so as to limit the movement of the whole protection net 70 towards the casing 10. For ensuring the strength, the connecting section 71 is not provided with the air holes 731, and a plurality of air holes 731 are started only on the covering section 73, namely, the connecting section 71 is a complete plate body, and the covering section 73 is a mesh plate. Of course, the connecting section 71 may be provided with the vent hole 731 as needed. Here, the connection segment 71 and the yoke 50 may be connected by welding or bonding, which is not limited herein. Of course, the structure of this embodiment may be combined with the protection net 70 to be inserted into the housing 11, so as to further improve the installation stability of the protection net 70.

In one embodiment, the surface of the magnetic yoke 50 facing away from the housing 10 is formed with a recess, and the connecting section 71 is located in the recess.

It should be noted that the connecting section 71 is adapted to the receding groove, that is, the connecting section 71 can be substantially contacted with the groove wall of the receding groove, and the two are engaged with each other, so as to limit the movement of the connecting section 71. Alternatively, the surface of the connecting section 71 facing away from the housing 10 is flush with the surface of the magnetic yoke 50 facing away from the housing 10, or the surface of the connecting section 71 facing away from the housing 10 is lower than the surface of the magnetic yoke 50 facing away from the housing 10. Due to the arrangement of the abdicating groove, on one hand, the limiting effect can be achieved for the connecting section 71, and the connecting section 71 is prevented from moving along the plate surface of the magnetic guide yoke 50; on the other hand, the connection section 71 is prevented from protruding on the surface two of the magnetic yoke 50 to occupy the space of the whole machine, thereby ensuring the miniaturization of the sound generating device 100. In addition, the connecting section 71 is made of metal, so that the receding groove of the magnetic yoke 50 can be filled, and the magnetic conduction effect of the magnetic yoke 50 is ensured.

In an optional embodiment, the vibration system 90 further includes a support 95, the support 95 is electrically connected to one end of the voice coil 93 close to the yoke 50, that is, the support 95 is located at one end of the voice coil 93 close to the yoke 50, and the support 95 is electrically connected to the voice coil 93, an abdicating hole 511 is formed in a position of the yoke 50 corresponding to the support 95, and the connection section 71 covers the abdicating hole 511. The arrangement of the abdicating hole 511 can provide a space for the up-and-down vibration of the supporting piece 95, and avoid the occurrence of interference. In the embodiment of providing the receding groove, the receding hole 511 may be opened at the bottom of the receding groove.

For the embodiment in which the sound device 100 has a square structure, the four corners of the sound device 100 are respectively provided with one supporting piece 95, and the four corners of the magnetic yoke 50 are respectively and correspondingly provided with one abdicating hole 511. Thus, the connecting section 71 is an integral plate body, and covers the four receding holes 511 together, or the connecting section 71 is annular or has a cross structure.

In an embodiment, two short sides of the sound device 100 are respectively provided with one leakage port 100a, each leakage port 100a corresponds to one protection net 70, and the formation of the two leakage ports 100a can enhance the overall pressure relief effect. Here, the connecting section 71 is substantially in a Y-shaped structure, that is, the connecting section includes two cover plates and a connecting plate for connecting the two cover plates, and the two cover plates are disposed corresponding to the two abdicating holes 511, so that the area of the connecting section 71 can be reduced, the material can be saved, and the covering area of the abdicating groove can be reduced, thereby ensuring the strength of the magnetic yoke 50.

The utility model discloses still provide an electronic equipment (not shown), including casing and as above sound production device 100, the casing is inside to have the holding chamber, sound production device 100 is installed the holding intracavity.

In this embodiment, the electronic device may be a mobile terminal, such as a mobile phone, a notebook computer, or a tablet computer, or may be a wearable electronic device, such as a bracelet or a telephone watch, which is not limited herein.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A sound producing device, comprising:

a magnetic yoke;

2. The sounder device according to claim 1, further comprising a vibration system, wherein the vibration system comprises a diaphragm, the diaphragm is disposed on a surface of the housing portion facing away from the magnetic yoke, and an edge of the diaphragm wraps around a portion of a peripheral side surface of the housing portion.

3. The sounder device according to claim 2, wherein the diaphragm comprises a center portion and an edge portion disposed about the center portion, and a corrugated portion disposed between the center portion and the edge portion, the edge portion having a first section and a second section, the first section engaging a surface of the housing portion facing away from the magnetic yoke, the second section engaging a portion of a peripheral side surface of the housing portion.

4. The sound production device as claimed in any one of claims 1 to 3, wherein the housing portion comprises a first body and a plurality of first blocking walls, the first body is annular, the plurality of first blocking walls are protruded from a surface of the first body facing the magnetic yoke and are clamped with the magnetic yoke, the first blocking walls and the first body are integrally formed as a metal piece of a stamping structure, and the leakage port is formed between two adjacent first blocking walls.

5. The sound production device as claimed in claim 4, wherein the yoke comprises a second body and a plurality of second blocking walls protruding from a surface of the second body, the second blocking walls extending toward the housing portion and being sandwiched between the first blocking walls; and/or the presence of a gas in the gas,

6. The sound device of claim 1, wherein the sound device is a square configuration;

7. The sounding device according to claim 1, wherein the housing portion has an insertion notch formed on a wall of the leakage opening, and the protection net is inserted into the insertion notch.

8. The sounder device according to claim 1, wherein the protective mesh includes a covering section and a connecting section, the covering section and the connecting section are both made of metal, the connecting section is connected to a surface of the magnetic yoke facing away from the housing portion, the covering section covers the leakage opening, and the covering section is provided with a plurality of air holes.

9. The sounder device according to claim 8, wherein said sounder device further comprises a vibration system and a magnetic circuit system, said magnetic circuit system comprising a center magnet and a side magnet disposed around said center magnet, the spacing between said center magnet and said side magnet forming a magnetic gap;

10. An electronic device comprising a housing having a receiving cavity therein, wherein the sound-producing device of any one of claims 1 to 9 is mounted in the receiving cavity.