CN219876116U

CN219876116U - Vibration sounding device and electronic equipment

Info

Publication number: CN219876116U
Application number: CN202321382592.9U
Authority: CN
Inventors: 蔡晓东; 刘松; 李波波
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-20
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses a vibration sounding device and electronic equipment, wherein the vibration sounding device comprises a sounding unit and a vibration unit which are stacked, a vibration system of the sounding unit comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, the voice coil is arranged in a magnetic gap of a magnetic circuit system, and the axial direction of the voice coil is parallel to the vibration direction of the vibrating diaphragm; the vibrating unit comprises a shell, a stator arranged in the shell, a vibrator and an elastic piece connected with the vibrator and the shell, wherein the vibrator vibrates along a first direction which is perpendicular to the vibrating direction of the vibrating diaphragm; the stator is a coil fixed on the shell, the vibrator comprises a mass block and a permanent magnet assembly arranged on the mass block, the permanent magnet assembly is in a strip shape, the length direction of the permanent magnet assembly is along a second direction, the second direction is perpendicular to the vibration direction and the first direction of the vibrating diaphragm, a first magnetic gap and a second magnetic gap distributed along the first direction are formed between the permanent magnet assembly and the shell, and the coil is provided with a first coil section corresponding to the first magnetic gap and a second coil section corresponding to the second magnetic gap.

Description

Vibration sounding device and electronic equipment

Technical Field

The utility model relates to the technical field of electroacoustic conversion, in particular to a vibration sounding device and electronic equipment using the same.

Background

The intelligent electronic equipment, especially mobile phone products, generally need to have the audio frequency experience and the vibration touch experience function, the audio frequency experience comes from the loudspeaker device, the touch vibration experience comes from the motor device, the loudspeaker device and the motor device are respectively and independently arranged in the process of improving the user audio frequency and the vibration touch experience in the related technology, so that the intelligent electronic equipment is large in occupied space and the layout effect is not ideal, and the user experience of the intelligent terminal is influenced.

Disclosure of Invention

The utility model mainly aims to provide a vibration sounding device and electronic equipment, and aims to provide the vibration sounding device which integrates a sounding unit and a vibration unit into a whole, so that the occupation of the internal space of the electronic equipment can be effectively reduced, and the utilization rate of the internal space of the electronic equipment is improved.

In order to achieve the above object, the present utility model provides a vibration sound generating apparatus including:

the sound generating unit comprises a vibration system and a magnetic circuit system, wherein the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, the voice coil is arranged in the magnetic gap, and the axial direction of the voice coil is parallel to the vibration direction of the vibrating diaphragm;

the vibrating unit comprises a shell, a stator arranged in the shell, a vibrator and an elastic piece for connecting the vibrator and the shell, wherein the vibrating unit and the sounding unit are stacked along the vibrating direction of the vibrating diaphragm, the vibrator vibrates along a first direction, and the first direction is perpendicular to the vibrating direction of the vibrating diaphragm; wherein,,

the stator is a coil fixed on the shell, the vibrator comprises a mass block and a permanent magnet arranged on the mass block, the permanent magnet is in a strip shape, the length direction of the permanent magnet is along a second direction, the second direction is perpendicular to the vibration direction of the vibrating diaphragm and the first direction, a first magnetic gap and a second magnetic gap distributed along the first direction are formed between the permanent magnet and the shell, the magnetic field directions of the first magnetic gap and the second magnetic gap are opposite, the coil is provided with a first coil section corresponding to the first magnetic gap and a second coil section corresponding to the second magnetic gap, and the current directions of the first coil section and the second coil section are opposite.

In one embodiment, the vibration sound generating device has a width along the first direction and a length along the second direction, wherein the length is equal to or greater than 1.2.

In an embodiment, the permanent magnet is one, the permanent magnet includes a first magnetizing area and a second magnetizing area distributed along the first direction, the first magnetizing area and the second magnetizing area magnetize along the vibration direction of the vibrating diaphragm and the magnetizing directions are opposite, and the first magnetic gap and the second magnetic gap are formed between the first magnetizing area and the second magnetizing area and the housing respectively.

In an embodiment, the number of the permanent magnets is two, the two permanent magnets are arranged along the first direction, the two permanent magnets are magnetized along the vibration direction of the vibrating diaphragm and the magnetizing directions are opposite, and the first magnetic gap and the second magnetic gap are respectively formed between the two permanent magnets and the shell.

In an embodiment, the number of the permanent magnets is three, the three permanent magnets include a middle magnet and outer magnets arranged on two sides of the middle magnet along the first direction, the middle magnet is magnetized along the first direction, the two outer magnets are magnetized along the vibrating direction of the vibrating diaphragm and are opposite in magnetizing direction, magnetic poles at two ends of the middle magnet are the same as magnetic poles of the outer magnets on one side, close to the coil, of the adjacent side respectively, and a first magnetic gap and a second magnetic gap are formed between the two outer magnets and the shell respectively.

In an embodiment, the mass block comprises a middle part and end parts positioned at two ends of the middle part, the end parts protrude towards one side close to the coil relative to the middle part, a first groove is formed in the surface of the middle part, which faces the coil, and the permanent magnet is arranged in the first groove.

In an embodiment, the housing, the mass block and the elastic member are all made of metal, and the elastic member is welded and fixed with the mass block or the elastic member is welded and fixed with the housing.

In an embodiment, the vibrator further includes a first magnetic conductive plate, and the first magnetic conductive plate is disposed on a side of the permanent magnet away from the coil.

In an embodiment, the first coil segment and the second coil segment are long axis segments of the coil.

In an embodiment, the number of the elastic members is two, the elastic members are respectively disposed on two sides of the vibrator along the first direction, the elastic members include connection portions at two ends and a deformation portion in the middle, one connection portion is fixed to the vibrator, the other connection portion is fixed to the housing, and the deformation portion extends from one connection portion to the other connection portion along the second direction.

In an embodiment, the vibration unit further includes a buffer member, and the buffer member is distributed on two sides of the vibrator along the first direction.

In an embodiment, the number of the buffer members is four, and the four buffer members are respectively fixed at two ends of the two elastic members.

In an embodiment, the material of the buffer member is foam or silica gel.

In one embodiment, the magnetic circuit system includes a magnetic yoke, a central magnetic component fixed to the magnetic yoke, and side magnetic components arranged at two sides of the central magnetic component along the first direction at intervals, wherein the magnetic gap is formed between the central magnetic component and the side magnetic components.

The utility model also provides electronic equipment, which comprises an equipment shell and the vibration sounding device, wherein the vibration sounding device is arranged in the equipment shell.

According to the vibration sounding device, the sounding unit and the vibration unit are integrated together and stacked, the vibration sounding device has smaller size, and compared with the traditional sounding unit and the vibration unit which are independent devices, occupation of the internal space of the electronic equipment can be effectively reduced, and the internal space utilization rate of the electronic equipment is improved; the vibration unit adopts a linear vibration structure, and has shorter starting and stopping time and stronger vibration sense compared with a rotor motor structure.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 (a) is a schematic diagram of a vibration sound generating apparatus according to the present utility model;

FIG. 1 (b) is a schematic view of a vibration sound device according to another embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the separation of a sound generating unit and a vibration unit of the vibration sound generating apparatus of the present utility model;

FIG. 3 is a schematic cross-sectional view of a vibration sound device of the present utility model;

FIG. 4 is a schematic cross-sectional view of a sound unit of the vibration sound device of the present utility model;

FIG. 5 is a schematic diagram showing the separation of sound units of the vibration sound device of the present utility model;

FIG. 6 is a further exploded schematic view of the sound emitting unit of the vibratory sound emitting device of FIG. 5;

FIG. 7 (a) is a schematic diagram showing a combination of a plastic part, a conductive terminal and a second magnetic conductive plate of a sound unit of a vibration sound device according to the present utility model;

FIG. 7 (b) is an exploded view of the structure of FIG. 7 (a);

FIG. 8 is a schematic diagram of a connection mode of leads of a sound generating unit of a vibration sound generating device according to the present utility model;

fig. 9 (a) is a schematic diagram showing a combination of a vibration unit and an FPCB of the vibration sound emitting device of the present utility model;

FIG. 9 (b) is a schematic cross-sectional view of the structure of FIG. 9 (a);

FIG. 10 is a schematic view showing the separation of the housing, vibrator, and stator of FIG. 9 (a);

FIG. 11 (a) is a schematic top view of the structure of FIG. 9 (a);

FIG. 11 (b) is a schematic cross-sectional view taken along line A-A in FIG. 11 (a);

FIG. 12 is a further exploded view of the structure of FIG. 10;

FIG. 13 is a schematic diagram showing the separation of the components of a sound unit of a vibration sound device according to an embodiment of the present utility model;

FIG. 14 is a schematic diagram showing the separation of the components of a sound unit of a vibration sound device according to another embodiment of the present utility model;

FIG. 15 is a schematic view showing the separation of the components of a sound unit of a vibration sound device according to still another embodiment of the present utility model;

FIG. 16 is a schematic diagram showing the separation of a sound generating unit and a vibration unit of a vibration sound generating device of the present utility model;

FIG. 17 is an exploded view of a vibration unit of a vibration sound device according to an embodiment of the present utility model;

FIG. 18 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 17;

FIG. 18 (B) is a schematic cross-sectional view taken along line B-B in FIG. 18 (a);

FIG. 19 is an exploded view of a vibration unit of a vibration sound emitting device according to still another embodiment of the present utility model;

FIG. 20 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 19;

FIG. 20 (B) is a schematic cross-sectional view taken along line B-B in FIG. 20 (a);

FIG. 21 is an exploded view of a vibration unit of a vibration sound emitting device according to still another embodiment of the present utility model;

FIG. 22 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 21;

FIG. 22 (B) is a schematic cross-sectional view taken along line B-B in FIG. 22 (a);

FIG. 23 is an exploded view of a vibration unit of a vibration sound emitting device according to still another embodiment of the present utility model;

FIG. 24 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 23;

FIG. 24 (B) is a schematic cross-sectional view taken along line B-B in FIG. 24 (a);

FIG. 25 is an exploded view of a vibration unit of a vibration sound emitting device according to still another embodiment of the present utility model;

FIG. 26 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 25;

FIG. 26 (B) is a schematic cross-sectional view taken along line B-B in FIG. 26 (a);

FIG. 27 is a schematic view showing a part of the structure of a vibration sound producing device according to the present utility model;

fig. 28 is a schematic structural view of an FPCB of the vibration sound emitting device according to the present utility model;

fig. 29 is a perspective view of an electronic device in the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Electronic equipment generally needs to have audio experience and vibrotactile experience functions, the audio experience comes from a loudspeaker device, the tactile vibration experience comes from a motor device, and related technologies generally set the loudspeaker device and the motor device respectively and independently, so that occupied space in the electronic equipment is large, and particularly the battery size is greatly influenced, the service time of the electronic equipment is finally influenced, and further the user experience is influenced.

Based on the above-mentioned problems, the present solution provides a vibration sounding apparatus 100, which innovatively integrates a speaker and a motor together, and compared with the traditional speaker and motor which are separate devices, the vibration sounding apparatus can effectively reduce the occupation of the internal space of the electronic device 200, and improve the utilization rate of the internal space of the electronic device 200. The electronic device 200 according to the present embodiment may be a portable mobile electronic product such as a mobile phone or an IPAD, or a wearable device such as a wristwatch, VR, AR, etc., which is not limited herein.

Referring to fig. 1 to 29 in combination, in the embodiment of the present utility model, a vibration sound generating device 100 includes a sound generating unit 1 and a vibration unit 2, the sound generating unit 1 includes a vibration system 11 and a magnetic circuit 12, the magnetic circuit 12 has a magnetic gap, the vibration system 11 includes a diaphragm 111, and a voice coil 112, the voice coil 112 is disposed in the magnetic gap and drives the diaphragm 111 to vibrate, and an axial direction of the voice coil 112 is parallel to a vibration direction of the diaphragm 111; the vibration unit 2 includes a housing 21, a stator provided in the housing 21, a vibrator 23, and an elastic member 24 connecting the vibrator 23 and the housing 21, and the vibration unit 2 is connected to the sound generating unit 1.

The vibration sounding apparatus 100 of this scheme innovatively integrates sound generating unit 1 and vibration unit 2 together, compares in traditional sound generating unit 1 and vibration unit 2 independent device respectively, can effectively reduce occupation to electronic equipment 200 inner space, promotes electronic equipment 200 inner space utilization.

In the embodiment of the present utility model, the vibration sound generating device 100 has a width along the first direction and a length along the second direction, and the first direction and the second direction are perpendicular to each other and are perpendicular to the vibration direction of the diaphragm 111, and the length of the vibration sound generating device 100 is greater than the width. That is, the vibration sound generating apparatus 100 has a slim-type structure, and can be better matched with the space of the electronic device 200 when applied to the electronic device 200. Optionally, when the vibration sound generating device 100 is applied to the electronic device, the width direction of the vibration sound generating device 100 is parallel to the thickness direction of the electronic device, and when the vibration sound generating device 100 is worn on a user, the first direction is perpendicular to the wearing part of the user, or when the vibration sound generating device 100 is placed on a fixed table top, the first direction is perpendicular to the fixed table top.

In this embodiment, the vibrator 23 vibrates along the first direction, that is, the vibrator 23 of this scheme vibrates along the direction perpendicular to the vibration direction of the voice coil 112, and the vibration unit 2 adopts a linear vibration structure, which is compared with a rotor motor structure, and has the advantages of shorter start-stop time, stronger vibration feeling and easier control, and can promote the use experience of users. And when being applied to electronic equipment, first direction is the thickness direction of electronic equipment, and the wearing position of perpendicular to wearer can promote the user experience of wearer.

Optionally, the ratio of the length to the width of the vibration sound generating apparatus 100 is greater than or equal to 1.2:1, i.e. the value of the length/width may be 5, 4, 3, 2.5, 2, 1.5, 1.2, etc. to flexibly match the space of different electronic devices 200. In practical applications, the size of the vibration sound device 100 is flexibly adjusted according to the reserved space of the electronic device 200, which is not limited herein.

As one of the embodiments, as shown in fig. 1 and 2, the vibration unit 2 and the sound generation unit 1 are stacked in the vibration direction of the diaphragm 111, and the vibration unit 2 is stacked below the sound generation unit 1 in the vibration direction of the diaphragm 111. So can assemble the spare part of sound unit 1 and vibration unit 2 respectively, later will be two again integrated, promote production efficiency. In one embodiment, the housing 21 of the vibration unit 2 may also support the magnetic circuit 12 of the sound generating unit 1, providing stability of the product structure as a whole.

In the present embodiment, the case 21 may have a structure having a housing space, such as a frame or a case, in which the stator, the vibrator 23, and the elastic member 24 are housed. The housing 21 may be an integrally formed structure, or may include a plurality of parts formed by combining, for example, the housing 21 includes a bottom plate 211, a support plate 213 opposite to the bottom plate 211, and a side plate 212 connecting the bottom plate 211 and the support plate 213, where the bottom plate 211, the support plate 213, and the side plate 212 enclose an accommodating space, and the support plate 213 supports the magnetic circuit 12 of the sound generating unit 1, so as to provide stability of the whole product structure.

In an embodiment, as shown in fig. 9 to 12 and 17 to 27, the stator is a coil 22 disposed in the housing 21, the vibrator 23 includes a mass 232 and a permanent magnet assembly 231 disposed on the mass 232, and the coil 22 is fixed to the housing 21 and disposed on a side of the vibrator 23 away from the sound generating unit 1. When applied to the housing 21, the coil 22 is provided on the bottom plate 211.

As a specific embodiment, the housing 21 is made of metal, so that the sound generating unit 1 can be better supported, and compared with the housing 21 made of plastic, the size of the vibration unit 2 can be reduced by the metal housing 21, so that the space occupation of the electronic device 200 is further reduced. The mass block 232 may be made of metal, such as tungsten steel, so as to improve the quality of the vibrator 23 and further improve the vibration sense.

As one embodiment, as shown in fig. 17 to 27, the permanent magnet assembly 231 has a first magnetization region and a second magnetization region, and a first magnetic gap and a second magnetic gap distributed in a first direction are formed between the first magnetization region and the second magnetization region of the permanent magnet assembly 231 and the housing 21, respectively, along the vibration direction of the diaphragm 111, the magnetic fields of the first magnetic gap and the second magnetic gap are opposite, the coil 22 has a first coil segment 2211 corresponding to the first magnetic gap and a second coil segment 222 corresponding to the second magnetic gap, and the current directions of the first coil segment 221 and the second coil segment 222 are opposite. So configured, the permanent magnet assembly 231 and the coil 22 cooperate to generate a driving force in a first direction, driving the vibrator 23 to vibrate in the first direction.

The permanent magnet assembly 231 is disposed in a plurality of ways, as shown in fig. 17 and 18, and the permanent magnet assembly 231 includes a permanent magnet, which includes a first magnetizing region and a second magnetizing region distributed along a first direction, where the first magnetizing region and the second magnetizing region magnetize along a vibration direction of the diaphragm 111 and the magnetizing directions are opposite, the first magnetizing region and the second magnetizing region are respectively used as a first magnetizing region and a second magnetizing region, and a first magnetic gap and a second magnetic gap are respectively formed between the first magnetizing region and the second magnetizing region and the housing 21. Alternatively, as shown in fig. 19 and 20, the permanent magnet assembly 231 includes two permanent magnets arranged along a first direction, the two permanent magnets are magnetized along a vibration direction of the diaphragm 111 and the magnetizing directions are opposite, the two permanent magnets respectively serve as a first magnetization region and a second magnetization region, and a first magnetic gap and a second magnetic gap are respectively formed between the two permanent magnets and the housing 21. The arrangement is less in parts and components, and convenient to manufacture and assemble.

In other embodiments, as shown in fig. 21 and 22, the permanent magnet assembly 231 includes three permanent magnets, the three permanent magnets include a middle magnet 2311 and outer magnets 2312 disposed on both sides of the middle magnet 2311 along a first direction, the middle magnet 2311 is magnetized along the first direction, the two outer magnets 2312 are magnetized along the vibration direction of the diaphragm 111 and the magnetizing directions are opposite, the magnetic poles of both ends of the middle magnet 2311 are respectively identical to the magnetic poles of the outer magnets 2312 on the adjacent sides near the coil 22, the two outer magnets 2312 respectively serve as a first magnetization region and a second magnetization region, and a first magnetic gap and a second magnetic gap are respectively formed between the two outer magnets 2312 and the housing 21. In this arrangement, the permanent magnet assembly 231 has a magnetic field enhancing side facing the coil 22 and a magnetic field weakening side facing the sound generating unit 1. Thus, the use of the magnet can be reduced while realizing a stronger magnetic field, and the manufacturing cost is reduced. Meanwhile, the magnetic field is mainly concentrated at the side facing the coil 22, so that the magnetic field strength of the vibration unit 2 can be raised, the vibration unit 2 generates stronger vibration feeling, and interference with the magnetic field of the sound generating unit 1 is reduced.

In the above embodiment, the side of the permanent magnet 231 assembly away from the coil 22 may also be provided with a first magnetic conductive plate 233, and the first magnetic conductive plate 233 is provided on the mass 232. The first magnetic conductive plate 233 is disposed on one side of the permanent magnet assembly 231 far away from the coil 22, so that magnetic lines of force on one side of the permanent magnet assembly 231 far away from the coil 22 can be effectively converged, magnetic field leakage can be avoided, the magnetic field of the vibration unit 2 is enhanced, and the vibration performance of the vibration unit 2 is improved.

Other arrangements of the permanent magnet assembly 231 are possible in embodiments of the present utility model. For example, as shown in fig. 23 and 24, the permanent magnet assembly 231 includes a permanent magnet, wherein the permanent magnet is magnetized along a first direction, and first magnetic conductive members 234 are disposed on two sides of the permanent magnet along the first direction, and the two first magnetic conductive members 234 are respectively used as a first magnetization region and a second magnetization region, and a first magnetic gap and a second magnetic gap are respectively formed between the two first magnetic conductive members 234 and the housing 21. In the present embodiment, the permanent magnet is horizontally magnetized, and the direction of the magnetic force lines is guided by the first magnetic conductive member 234, and the vibration function of the vibrator 23 is realized by the combined action with the coil 22. It will be appreciated that the permanent magnet assembly 231 may have other arrangements, which may be flexibly selected during actual use.

In the above embodiment, the permanent magnet has a long strip shape, and the length direction thereof is along the second direction, and the first coil section 221 and the second coil section 222 are long axis sections of the coil 22. This allows the vibrator 23 to receive the maximum driving force in the first direction, ensuring the vibration performance of the vibration unit 2.

In one embodiment, as shown in fig. 17 to 27, the vibration unit 2 is provided with two elastic members 24, the two elastic members 24 are respectively disposed on two sides of the vibrator 23 along the first direction, the elastic members 24 include two connecting portions at two ends and a deformed portion in the middle, one connecting portion is fixed to the vibrator 23, the other connecting portion is fixed to the housing 21, and the deformed portion extends from one connecting portion to the other connecting portion along the second direction.

In this embodiment, the elastic member 24 may be made of metal, such as stainless steel. The elastic member 24 has a substantially straight structure, which reduces the space occupation of the vibration unit 2 in the first direction, and is beneficial to the thin design of the vibration unit 2. In this embodiment, the two elastic members 24 are respectively disposed on both sides of the vibrator 23, so that the vibrator 23 can be better supported, and the vibration stability of the vibrator 23 can be improved. The elastic members 24 may be provided in other forms, for example, a plurality of elastic members 24 may be provided, and a plurality of elastic members 24 may be provided at both ends of the vibrator 23 in the second direction, end regions of the vibrator 23, or the like.

As one embodiment, the housing 21, the mass block 232 and the elastic member 24 are made of metal, the elastic member 24 and the mass block 232 are welded and fixed, the elastic member 24 and the housing 21 are welded and fixed, and the connection stability of the elastic member 24 is improved.

In one embodiment, as shown in fig. 12, a surface of the mass 232 facing the coil 22 is provided with a first groove 23211, and the permanent magnet assembly 231 is provided in the first groove 23211. The permanent magnet assembly 231 is disposed in the first groove 23211, so that the thickness of the vibrator 23 can be reduced, the thickness of the vibration unit 2 can be further reduced, the thin design of the vibration unit 2 is facilitated, and finally the thickness of the vibration sound generating device 100 can be further reduced, and the volume of the electronic device 200 occupied by the vibration sound generating device can be reduced.

Specifically, the mass 232 includes a middle portion 2321 and end portions 2322 located at two ends of the middle portion 2321, the two end portions 2322 protrude towards a side close to the coil 22 relative to the middle portion 2321, the middle portion 2321 is provided with a first groove 23211, and the permanent magnet assembly 231 is embedded in the middle portion 2321. Alternatively, the coil 22 is located between the two end portions 2322, the coil 22 being disposed opposite the permanent magnet assembly 231.

Further, the vibration unit 2 further includes a buffer member 25, and the buffer member 25 is distributed on both sides of the vibrator 23 in the first direction. Optionally, the material of the buffer member 25 is foam or silica gel. The damper 25 can damp the impact of the vibrator 23 upon collision with the housing 21, and enhance the vibration performance of the vibration unit 2.

Alternatively, the number of the buffer members 25 is four, and the four buffer members 25 are respectively fixed to both ends of the two elastic members 24 in the second direction. And may be provided in particular on the connection portion.

In an embodiment, the sound generating unit 1 further comprises an auxiliary housing 13, and the vibration system 11 and the magnetic circuit system 12 are fixed to the auxiliary housing 13. In this embodiment, as shown in fig. 13 to 15, the auxiliary housing 13 includes an annular bracket 131, the diaphragm 111 is bonded to an inner peripheral wall of the annular bracket 131, and the diaphragm 111 is injection molded or heat-press molded integrally with the annular bracket 131.

As one embodiment, the annular bracket 131 is made of plastic, the diaphragm 111 includes a diaphragm body 1111 and a vibrating plate 1112, and the vibrating plate 1112 is disposed in a central region of the diaphragm body 1111. The vibrating diaphragm body 1111 can be integrally formed with the annular bracket 131 by adopting liquid silicone rubber through an injection molding process, specifically, the annular bracket 131 is arranged in a mold as an insert, then the liquid silicone rubber is injected into the mold to form the vibrating diaphragm body 1111, and the liquid silicone rubber is combined with the annular bracket 131 in the process of injecting the liquid silicone rubber, so that the liquid silicone rubber and the annular bracket 131 are connected.

Alternatively, the diaphragm body 1111 is integrally formed with the ring bracket 131 by a hot pressing process using one of solid silicon rubber, AEM rubber, or ACM rubber.

In this embodiment, the diaphragm 111 and the annular bracket 131 are integrally formed, so that the connection stability of the diaphragm 111 and the annular bracket 131 can be improved, and no glue is required between the diaphragm 111 and the annular bracket 131, thereby meeting the high-level waterproof requirement of the electronic device 200 such as a smart watch.

Optionally, the sound generating unit 1 further includes a waterproof sealing ring 115, the waterproof sealing ring 115 is combined with the peripheral wall of the annular bracket 131, and the annular bracket 131 and the waterproof sealing ring 115 are in an integrated structure. Specifically, the waterproof sealing ring 115 may be integrally formed with the annular bracket 131 by using liquid silicone rubber through an injection molding process; alternatively, the waterproof gasket 115 is formed integrally with the ring bracket 131 by a hot pressing process using one of solid silicone rubber, AEM rubber, or ACM rubber. Further, after the waterproof sealing ring 115 and the annular bracket 131 are integrally formed, the diaphragm body 1111 is combined with the annular bracket 131 through a hot pressing process, that is, the diaphragm 111, the annular bracket 131 and the waterproof sealing ring 115 are integrally formed, and the combined annular bracket 131 has a higher waterproof grade.

In the embodiment of the present utility model, as shown in fig. 5 to 7, the magnetic circuit 12 of the sound generating unit 1 includes a yoke 121, a center magnetic assembly 122 and an edge magnetic assembly 123 fixed to the yoke 121, and the center magnetic assembly 122 and the edge magnetic assembly 123 are spaced apart and form a magnetic gap.

In one embodiment, the auxiliary housing 13 includes two plastic portions 133, the two plastic portions 133 are disposed at two ends of the auxiliary housing 13 along the second direction, and the two plastic portions 133 are used for limiting the edge magnetic assembly 123.

Specifically, the two side magnetic assemblies 123 are arranged at intervals along the first direction on two sides of the central magnetic assembly 122, the side magnetic assemblies 123 comprise side magnets 1231 arranged on the magnetic yoke 121 and side magnetic conductive plates 1232 arranged on the side magnets 1231, the side magnetic conductive plates 1232 and the plastic parts 133 are integrally injection molded, a limit groove 1331 is formed between the two plastic parts 133, and the side magnets 1231 are arranged in the limit groove 1331. It should be noted that, both ends of the two side magnetic conductive plates 1232 are injection molded with the plastic part 133, and the two second magnetic conductive plates may be an integral structure or a split structure. Utilize plastic portion 133 to mould plastics limit magnetic conduction board 1232 and form magnet limit structure, effectively prevent the separation and the whereabouts of magnetic assembly when the product falls, promote magnetic assembly's connection fastness. Further, the central magnetic assembly 122 includes a central magnet 1221 provided to the yoke 121 and a central magnetically permeable plate 1222 provided to the central magnet 1221.

Optionally, a conductive terminal 1332 is injection molded on the plastic part, an inner pad of the conductive terminal 1332 is electrically connected with the lead 1121, and an outer pad of the conductive terminal 1332 is exposed on the outer side wall of the plastic part 133, so that the conductive terminal 1332 is electrically connected with an FPCB (flexible circuit board) conveniently, and further electrically connected with an external circuit.

In this embodiment, one of the annular bracket 131 and the plastic part 133 is provided with a positioning protrusion, and the other is provided with a positioning recess, and the annular bracket 131 and the plastic part 133 are in positioning connection through the cooperation of the positioning protrusion and the positioning recess.

In an embodiment, the sound generating unit 1 further includes a front cover 135 disposed on a side of the diaphragm 111 away from the magnetic circuit 12, the front cover 135 is connected to a periphery of the diaphragm 111, the front cover 135 is made of metal, and the front cover 135 is provided with a through hole facing the central region of the diaphragm 111. In the carrying and mounting process of the sound generating unit 1, the front cover 135 can effectively avoid the risk that the diaphragm 111 is damaged by external force, and the front cover 135 is provided with a through hole, so that the sound of the diaphragm 111 is radiated outwards.

In an embodiment, as shown in fig. 12 and 16, the housing 21 of the vibration unit 2 includes a bottom plate 211 and a side plate 212 connected to a periphery of the bottom plate 211, the side plate 212 includes two first side plates 2121 disposed opposite to each other and a second side plate 2122 connected to the two first side plates 2121, the first side plates 2121 are bent toward the housing 21 to form a supporting plate 213, and the magnetic circuit 12 is disposed on the supporting plate 213. Thus, the housing 21 of the vibration unit 2 can better support the sound generating unit 1, and the connection stability of the two can be improved.

More specifically, magnetic circuit 12 includes a yoke 121, a center magnetic assembly 122 fixed to yoke 121, and side magnetic assemblies 123 disposed at intervals on both sides of center magnetic assembly 122 in the first direction, a magnetic gap being formed between center magnetic assembly 122 and side magnetic assemblies 123, and yoke 121 being disposed on support plate 213.

In one embodiment, the housing 21 is made of metal, and the yoke 121 is welded to the first side plate 2121 and/or the second side plate 2122. Alternatively, the second side plate 2122 has a protruding portion 21221 extending toward the sound generating unit 1, and the yoke 121 is bent and extended with a bent portion 1211 corresponding to the protruding portion 21221, and the bent portion 1211 is welded and fixed to the protruding portion 21221. The yoke 121 and the second side plate 2122 are welded and fixed, further enhancing the connection reliability of the sound generating unit 1 and the vibration unit 2.

In this embodiment, the central magnetic component 122 and the side magnetic components 123 are both elongated, and the length direction thereof is along the second direction. Optionally, the length of the central magnet assembly 122 in the second direction is greater than the length of the side magnet assembly 123 in the second direction. The arrangement form of the magnetic circuit system 12 is further optimized, the magnetic field strength of the magnetic circuit system 12 is improved, and the driving force for the voice coil 112 is improved.

As shown in fig. 1 to 3, 9 to 12, and 16 to 28, the vibration/sound generating device 100 of the present utility model further includes an FPCB3, where the FPCB3 includes a first conductive end (not shown), a second conductive end 321, and a third conductive end 322, the first conductive end provides an electrical signal to the vibration unit 2, the second conductive end 321 provides an electrical signal to the sound generating unit 1, and the third conductive end 322 is electrically connected to the first conductive end and the second conductive end 321, respectively, and is electrically connected to an external circuit. In this scheme, FPCB3 provides the signal of telecommunication to vibration unit 2 and sound generating unit 1 simultaneously, reduces the setting of the part of vibration sound generating apparatus 100, is favorable to vibration sound generating apparatus 100's design of integrating.

Specifically, the FPCB3 includes a first portion 31 disposed inside the housing 21 and fixed between the coil 22 and the housing 21, and a second portion 32 extending outside the housing 21, the first portion 31 being provided with a first conductive end, the second portion 32 being provided with a second conductive end 321 and a third conductive end 322. The plastic portion 133 is provided with a conductive terminal 1332, the first conductive end is connected to the coil 22, the second conductive end 321 extends to the plastic portion 133 to be connected to the conductive terminal 1332, and the third conductive end 322 is connected to an external circuit. In the present embodiment, as shown in fig. 8, the conductive terminal 1332 is soldered to the lead 1121 of the voice coil 112 to electrically connect the voice coil 112 to the second conductive terminal 321.

More specifically, the second portion 32 is at least partially attached to the surface of the housing 21 for better supporting the FPCB3 and improving the stability of the electrical connection of the FPCB 3.

In the vibration sounding apparatus 100 of the present utility model, the diaphragm 111 may further have a waterproof and breathable structure, so that in the working process of the sounding unit 1, air pressures at two sides of the diaphragm 111 may be balanced, vibration stability of the diaphragm 111 may be ensured, and meanwhile, heat dissipation performance of the sounding unit 1 may be improved. The waterproof and breathable structure is arranged on the vibrating diaphragm 111, so that materials, production and assembly costs can be saved, and meanwhile, the design of the sounding unit 1 is more flexible and not limited.

The waterproof and breathable structure has various arrangement modes, as shown in fig. 13 and 14, the diaphragm 111 is provided with a ventilation hole 113, and the ventilation hole 113 is covered with a waterproof and breathable member 114. Specifically, the air holes 113 may be disposed in a middle region or an edge region of the diaphragm 111, or the air holes 113 may be disposed in the middle region and the edge region, and the technician may flexibly select according to the structures of the diaphragm 111 and the sound generating unit 1.

Alternatively, the ventilation hole 113 may be a through hole or a plurality of array micropores. The waterproof and breathable member 114 may be a waterproof and breathable film made of ePTFE (expanded polytetrafluoroethylene) material or PTFE (polytetrafluoroethylene) material or a waterproof and breathable net made of other textile materials combined with adhesives such as pressure sensitive adhesive, heat sensitive adhesive, photosensitive adhesive, etc.

Further, the surface of the waterproof and breathable member 114 may also be provided with a hydrophobic layer and/or an oleophobic layer. The specific implementation mode is to coat materials such as a water repellent agent, an oil repellent agent and the like on the surface of the waterproof breathable piece 114 so as to achieve better ventilation, waterproof and dustproof functions and meet different application scenes. It can be appreciated that in the present embodiment, the waterproof and breathable member 114 has a certain damping characteristic, and meets the acoustic performance requirement of the sound generating unit 1.

Alternatively, as shown in fig. 15, the diaphragm 111 includes a diaphragm body 1111 and a diaphragm 1112, the diaphragm body 1111 is disposed around the diaphragm 1112, the diaphragm body 1111 is a porous structure layer, or the diaphragm 1112 is a porous structure layer, or the diaphragm body 1111 and the diaphragm 1112 are both porous structure layers. In this embodiment, the vibrating plate 1112 is disposed in the central area of the vibrating film body 1111, the vibrating film body 1111 may have a through hole, the vibrating plate 1112 covers the through hole, or the vibrating film body 1111 does not have a through hole, which is a conventional structure of the vibrating film 111, and will not be described herein.

Further, the diaphragm body 1111 is a porous material layer made of any one of polyimide, polyester fiber, polyamide, polytetrafluoroethylene, polycarbonate, polyethylene, and polyvinylidene fluoride, or a porous material layer made of a combination of several materials. The pore diameter of the porous structure material layer is larger than the diameter of air molecules and smaller than the diameter of water molecules. The diaphragm body 1111 made of the above material can equalize the pressure difference at both sides of the diaphragm 111, improve the vibration performance of the diaphragm 111, and flexibly adjust the elastic modulus of the diaphragm body 1111 in use.

The vibrating plate 1112 is an organic aerogel layer, and the organic aerogel layer is made of any one of polyamides, polyimides, polyesters, polyurethanes, aldehydes, polyolefins, polysaccharides and organic silicon or a combination of several materials, and has a porous structure, wherein the pore diameter is larger than the diameter of air molecules and smaller than the diameter of water molecules. The organic aerogel layer made of the material has a porous structure, so that the pressure difference at two sides of the vibrating diaphragm 111 can be balanced by the prepared organic aerogel layer, and the vibration performance of the vibrating diaphragm 111 is improved. Meanwhile, the organic aerogel layer is light in weight and large in modulus, and different types of organic aerogels also have different characteristics, and can be specifically selected according to the use environment of the dome.

Optionally, the organic aerogel layer comprises an organic aerogel matrix and a reinforcing material dispersed within the organic aerogel matrix, the reinforcing material being carbon fibers, textile fibers, or metal particles. The reinforcing material can enhance the structural strength of the vibration plate 1112, thereby enhancing the rigidity and damping performance thereof, and further enhancing the acoustic performance of the sound generating unit 1.

Optionally, the organic aerogel layer includes an organic aerogel matrix and a heat conductive material dispersed in the organic aerogel matrix, where the heat conductive material is at least one of aluminum, copper, silver, magnesium, tin, lead, iron, or at least one of boron nitride, boron carbide, silicon carbide, aluminum oxide, graphite, carbon nanotubes, graphene, and nano carbon powder. The heat conducting material can improve the heat conducting and radiating performance of the vibrating plate 1112 and the reliability of the working environment of the sounding unit 1.

The present utility model also proposes an electronic device 200 (as shown in fig. 29), where the electronic device 200 includes a device housing 201 and the vibration/sound device 100 described above, and the vibration/sound device 100 is disposed in the device housing 201. The specific structure of the vibration sound emitting device 100 refers to the structure of the vibration sound emitting device 100 of the foregoing embodiment.

Alternatively, the first direction is a thickness direction of the electronic device 200; when the electronic device 200 is worn on a user, the first direction is perpendicular to the wearing part of the user; or, when the electronic device 200 is placed on the fixed table top, the first direction is perpendicular to the fixed table top, so as to improve the use experience of the user. For example, the electronic device 200 is a smart watch, the device housing 201 of the smart watch has a thickness along the first direction, and when the vibration sound generating apparatus 100 is placed in the device housing 201, the vibration direction of the vibration sound generating apparatus is along the thickness direction of the watch, that is, the wrist skin of the user feels the vibration sense from the vertical direction, so as to improve the user experience.

Because the electronic device 200 adopts all the technical solutions of all the foregoing embodiments, at least the technical solutions of the foregoing embodiments have all the beneficial effects, which are not described in detail herein.

The foregoing description of the embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or as applied directly or indirectly to other related technical fields.

Claims

1. A vibration sound producing apparatus, comprising:

the stator is a coil fixed on the shell, the vibrator comprises a mass block and a permanent magnet assembly arranged on the mass block, the permanent magnet assembly is in a strip shape, the length direction of the permanent magnet assembly is along a second direction, the second direction is perpendicular to the vibration direction of the vibrating diaphragm and the first direction, the permanent magnet assembly is provided with a first magnetization area and a second magnetization area, a first magnetic gap and a second magnetic gap distributed along the first direction are formed between the first magnetization area and the second magnetization area of the permanent magnet assembly and the shell respectively, the magnetic field directions of the first magnetic gap and the second magnetic gap are opposite, the coil is provided with a first coil section corresponding to the first magnetic gap and a second coil section corresponding to the second magnetic gap, and the current directions of the first coil section and the second coil section are opposite.

2. The vibratory sound device of claim 1 having a width in a first direction and a length in a second direction, the length being greater than or equal to 1.2 x the width.

3. The vibration-sound-producing device according to claim 1, wherein the permanent magnet includes a permanent magnet including a first magnetization region and a second magnetization region distributed along the first direction, the first magnetization region and the second magnetization region being the first magnetization region and the second magnetization region, respectively, the first magnetization region and the second magnetization region being both magnetized along a vibration direction of the diaphragm and being opposite in magnetization direction, the first magnetization region and the second magnetization region forming the first magnetic gap and the second magnetic gap between the housing, respectively;

or the permanent magnet assembly comprises two permanent magnets, the two permanent magnets are arranged along the first direction, the two permanent magnets are magnetized along the vibration direction of the vibrating diaphragm and the magnetizing directions are opposite, the two permanent magnets are respectively used as the first magnetizing area and the second magnetizing area, and the first magnetic gap and the second magnetic gap are respectively formed between the two permanent magnets and the shell;

or, the permanent magnet assembly comprises three permanent magnets, the three permanent magnets comprise middle magnets and outer magnets arranged on two sides of the middle magnets along the first direction, the middle magnets are magnetized along the first direction, the two outer magnets are magnetized along the vibrating direction of the vibrating diaphragm and are opposite in magnetizing direction, magnetic poles at two ends of the middle magnets are respectively identical to magnetic poles of the outer magnets on one side, close to the coil, of the adjacent side, the two outer magnets are respectively used as the first magnetization area and the second magnetization area, and a first magnetic gap and a second magnetic gap are respectively formed between the two outer magnets and the shell.

4. The vibration and sound device according to claim 1, wherein the permanent magnet assembly comprises a permanent magnet, the permanent magnet is magnetized along the first direction, first magnetic conducting pieces are arranged on two sides of the permanent magnet along the first direction, the two first magnetic conducting pieces are respectively used as the first magnetization area and the second magnetization area, and the first magnetic gap and the second magnetic gap are respectively formed between the two first magnetic conducting pieces and the housing.

5. The vibration and sound device according to claim 1, wherein the mass block includes a middle portion and end portions at both ends of the middle portion, the end portions protrude toward a side close to the coil with respect to the middle portion, a first groove is opened in a surface of the middle portion facing the coil, and the permanent magnet assembly is provided in the first groove;

and/or the shell, the mass block and the elastic piece are all made of metal materials, and the elastic piece is fixedly welded with the mass block or the elastic piece is fixedly welded with the shell.

6. The vibration and sound device as claimed in claim 3, wherein the vibrator further comprises a first magnetic conductive plate provided at a side of the permanent magnet assembly away from the coil.

7. The vibration and sound device according to any one of claims 1 to 6, wherein the first coil section and the second coil section are long axis sections of the coil.

8. The vibration/sound production device according to claim 1, wherein the number of the elastic members is two, the two elastic members are respectively provided on both sides of the vibrator in the first direction, the elastic members include connection portions at both ends and a deformation portion in the middle, one of the connection portions is fixed to the vibrator, the other connection portion is fixed to the housing, and the deformation portion extends from one of the connection portions to the other connection portion in the second direction.

9. The vibration and sound device according to claim 1, wherein the vibration unit further includes buffering members distributed on both sides of the vibrator in the first direction.

10. The vibration and sound device according to claim 9, wherein the number of the buffer members is four, and the four buffer members are respectively fixed at both ends of the two elastic members;

and/or the material of the buffer piece is foam or silica gel.

11. The vibration-sound-producing device according to claim 1, wherein the magnetic circuit system includes a yoke, a center magnetic assembly fixed to the yoke, and side magnetic assemblies provided at both sides of the center magnetic assembly at intervals along the first direction, the magnetic gap being formed between the center magnetic assembly and the side magnetic assemblies.

12. The vibratory sound device of claim 1 wherein the first direction is perpendicular to a wearing location of a user when the vibratory sound device is worn by the user;

or when the vibration sounding device is placed on the fixed table top, the first direction is perpendicular to the fixed table top.

13. An electronic device comprising a device housing and a vibration sound emitting device according to any one of claims 1 to 12, the vibration sound emitting device being provided in the device housing.

14. The electronic device of claim 13, wherein the first direction is a thickness direction of the electronic device;

when the electronic equipment is worn on a user, the first direction is perpendicular to the wearing part of the user;

or when the electronic equipment is placed on the fixed table top, the first direction is perpendicular to the fixed table top.