CN219876120U

CN219876120U - Vibration sounding device and electronic equipment

Info

Publication number: CN219876120U
Application number: CN202321384033.1U
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 magnetic circuit system of the sounding unit comprises two magnetic assemblies which are arranged along a first direction and are arranged at intervals to form a magnetic gap, the vibration system comprises a vibrating diaphragm and a voice coil which drives the vibrating diaphragm to vibrate, the voice coil is flat and is arranged in the magnetic gap, the axial direction of the voice coil is parallel to the first direction, and the vibration direction of the vibrating diaphragm is perpendicular to the axial direction of the voice coil; the vibration unit comprises a shell, a stator, a vibrator and an elastic piece connected with the vibrator and the shell, wherein the stator is a coil fixed on the shell, the vibrator comprises a permanent magnet assembly, the permanent magnet assembly is opposite to the coil and is positioned on one side of the coil, which is close to the sounding unit, 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, and the vibrator vibrates along the first direction.

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 comprises two magnetic assemblies which are distributed along a first direction and are arranged at intervals to form a magnetic gap, the vibration system comprises a vibrating diaphragm and a voice coil which drives the vibrating diaphragm to vibrate, the voice coil is flat and is arranged in the magnetic gap, the axial direction of the voice coil is parallel to the first direction, and the vibration direction of the vibrating diaphragm is perpendicular to the axial direction of the voice coil;

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, and the vibrator vibrates along a first direction; wherein,,

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.

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 1.5.

In an embodiment, the permanent magnet assembly includes a permanent magnet, the permanent magnet includes a first magnetization region and a second magnetization region that are distributed along the first direction, the first magnetization region and the second magnetization region are both magnetized along a vibration direction of the diaphragm and are opposite in magnetization direction, the first magnetization region and the second magnetization region are respectively used as the first magnetization region and the second magnetization region, and the first magnetization region and the second magnetization region respectively form the first magnetic gap and the second magnetic gap with the housing.

In an embodiment, the permanent magnet assembly includes 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 diaphragm and the magnetizing directions of the two permanent magnets are opposite, the two permanent magnets 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 permanent magnets and the housing.

In an embodiment, the permanent magnet assembly includes three permanent magnets, 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 vibration direction of the vibrating diaphragm and are opposite in magnetizing direction, magnetic poles at two ends of the middle magnet are respectively the same as 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 region and the second magnetization region, and a first magnetic gap and a second magnetic gap are respectively formed between the two outer magnets and the housing.

In an embodiment, the permanent magnet assembly includes a permanent magnet, the permanent magnet is magnetized along the first direction, first magnetic conductive members are disposed on two sides of the permanent magnet along the first direction, the two first magnetic conductive members are respectively used as the first magnetization region and the second magnetization region, and the first magnetic gap and the second magnetic gap are respectively formed between the two first magnetic conductive members and the housing.

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 assembly 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 first coil segment and the second coil segment are long axis segments of the coil.

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 assembly away from the coil.

In an embodiment, the two elastic members are respectively arranged at two sides of the vibrator along the first direction, the elastic members comprise connecting portions at two ends and a middle deformation portion, one connecting portion is fixed with the vibrator, the other connecting portion is fixed with the housing, and the deformation portion extends from one connecting portion to the other connecting 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 an embodiment, each magnetic assembly includes a second magnetic conductive plate, and a first magnet and a second magnet sequentially disposed on one side of the second magnetic conductive plate away from the diaphragm, where the first magnet magnetizes along the vibration direction of the diaphragm, the magnetization direction of the second magnet is perpendicular to the vibration direction of the diaphragm, and a magnetic pole of one end of the second magnet near the magnetic gap is opposite to a magnetic pole of one end of the first magnet near the second magnetic conductive plate;

The magnetizing directions of the two opposite first magnets of the two magnetic assemblies are opposite, and the magnetizing directions of the two opposite second magnets are the same.

In an embodiment, each magnetic assembly includes a second magnetic conductive plate, and a first magnet and a second magnet sequentially disposed on one side of the second magnetic conductive plate away from the diaphragm, where the first magnet magnetizes along the vibration direction of the diaphragm, the second magnet magnetizes along the first direction, and a magnetic pole of the second magnet near one end of the magnetic gap is opposite to a magnetic pole of the first magnet near one end of the second magnetic conductive plate;

the magnetizing directions of the two opposite first magnets of the two magnetic assemblies are opposite, and the magnetizing directions of the two opposite second magnets are the same;

the two magnetic assemblies are a first magnetic assembly and a second magnetic assembly;

along the vibration direction of the vibrating diaphragm, the first magnetization region of the permanent magnet assembly corresponds to the first magnetic assembly, the second magnetization region corresponds to the second magnetic assembly, and no magnetic permeability component is arranged between the permanent magnet assembly and the two second magnets.

In an embodiment, the second magnet in the first magnetic assembly is N-pole near the end of the magnetic gap, and the second magnet in the second magnetic assembly is S-pole near the end of the magnetic gap;

Along the vibration direction of the vibrating diaphragm, the magnetic pole of one end of the first magnetization region, which is close to the first magnetic assembly, is an N pole, and the magnetic pole of one end of the second magnetization region, which is close to the second magnetic assembly, is an S pole;

when the vibrator vibrates along the first direction, the permanent magnet assembly and the magnetic circuit system interact, so that the vibrator receives magnetic force in the same vibration direction as the vibrator.

when the vibrator vibrates in the first direction, the permanent magnet assembly and the magnetic circuit system interact so that the vibrator receives magnetic force opposite to the vibration direction of the vibrator.

In an embodiment, when the vibration sound generating device is worn on a user, the first direction is perpendicular to the wearing part of 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.

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.

In an embodiment, 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.

According to the vibration sounding device, the sounding unit adopts the flat voice coil, the two magnetic assemblies forming the magnetic gap are respectively positioned at two sides of the voice coil, and compared with the annular voice coil and the magnetic circuit structure forming the annular magnetic gap in the prior art, the vibration sounding device has higher magnetic circuit utilization rate, so that the voice coil can obtain larger driving force. Compared with the traditional independent devices of the sounding unit and the vibration unit, the sound generating unit and the vibration unit are innovatively integrated, 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.

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 unit and a vibration unit of a vibration sound device according to the present utility model;

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

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

FIG. 5 is an exploded view of a sound unit of a vibration sound device of the present utility model;

FIG. 6 is a schematic diagram of the sound generating unit and magnetizing direction of the vibration unit of the vibration sound generating device according to the present utility model;

FIG. 7 is a magnetic field distribution diagram of the sound emitting unit and the vibration unit of FIG. 6;

FIG. 8 is a magnetic field distribution diagram of the sound emitting unit and the vibration unit of FIG. 6;

FIG. 9 is a schematic diagram showing the static magnetic force and the elastic restoring force of the elastic member and the resultant force of the static magnetic force and the elastic member in FIG. 6;

FIG. 10 is a schematic diagram showing a comparison of the BL curve of the sound emitting unit of FIG. 6 and the BL curve of the independent sound emitting unit;

FIG. 11 is a schematic diagram showing a sound generating unit and magnetizing directions of the vibration unit of the vibration sound generating device according to another embodiment of the present utility model;

FIG. 12 is a schematic diagram showing the static magnetic force and the elastic restoring force of the elastic member and the resultant force of the static magnetic force and the elastic restoring force of the elastic member in FIG. 11;

FIG. 13 is an exploded view of a portion of the sound unit of the vibration sound device of the present utility model;

FIG. 14 (a) is an exploded view of a part of the sound unit of the vibration sound device of the present utility model;

FIG. 14 (b) is a schematic diagram of the structural assembly of FIG. 14 (a);

FIG. 15 is an exploded view of a portion of the sound unit of the vibration sound device of the present utility model;

FIG. 16 is a schematic diagram of the structure of a skeleton of a sound unit of a vibration sound device according to the present utility model;

FIG. 17 is a schematic cross-sectional view of a diaphragm of a sound unit of a vibration sound device according to the present utility model;

FIG. 18 is a schematic diagram of a plastic part and a magnetic assembly of a sound unit of a vibration sound device according to the present utility model;

FIG. 19 is a schematic diagram showing the separation of the plastic part of the sound unit and the second magnetic conductive plate of the vibration sound device according to the present utility model;

FIG. 20 (a) is a schematic view of a part of the structure of a sound unit of a vibration sound device according to the present utility model;

fig. 20 (b) is an exploded view of the structure of fig. 20 (a);

fig. 21 (a) is a schematic diagram showing a combination of a vibration unit and an FPCB of a vibration sound emitting device according to the present utility model;

FIG. 21 (b) is a schematic cross-sectional view of FIG. 21 (a);

FIG. 22 is an exploded view of FIG. 21 (a);

FIG. 23 is an exploded view of a vibration unit of a vibration sound device according to an 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 of 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 of FIG. 26 (a);

FIG. 27 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. 28 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 27;

FIG. 28 (B) is a schematic cross-sectional view taken along line B-B of FIG. 28 (a);

FIG. 29 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. 30 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 29;

FIG. 30 (B) is a schematic cross-sectional view taken along line B-B of FIG. 30 (a);

FIG. 31 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. 32 (a) is a top view of the vibration unit of the vibration sound emitting device of FIG. 31;

FIG. 32 (B) is a schematic cross-sectional view taken along line B-B of FIG. 32 (a);

fig. 33 is a schematic structural view of an FPCB of the vibration sound emitting device according to the present utility model;

fig. 34 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 problems, the scheme provides the vibration sounding device, the loudspeaker and the motor are innovatively integrated together, and compared with the traditional loudspeaker and the motor which are respectively independent devices, the vibration sounding device can effectively reduce occupation of the internal space of the electronic equipment and improve the utilization rate of the internal space of the electronic equipment. The electronic device in this 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 33 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, where the sound generating unit 1 includes a vibration system 11 and a magnetic circuit 12, the magnetic circuit 12 includes two magnetic components arranged along a first direction and spaced apart to form 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, the voice coil 112 is flat, an axial direction of the voice coil 112 is parallel to the first direction, a vibration direction of the diaphragm 111 is perpendicular to an axial direction of the voice coil 112, the voice coil 112 has a first wire segment near the diaphragm 111 along the vibration direction of the diaphragm 111 and a second wire segment far from the diaphragm 111, and a magnetic loop formed by the two magnetic components passes through the first wire segment and the second wire segment along the first direction, respectively; 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.

In the vibration sound generating device 100 of the present utility model, the sound generating unit 1 adopts the flat voice coil 112, and the two magnetic assemblies forming the magnetic gap are respectively located at two sides of the voice coil 112, compared with the annular voice coil 112 and the magnetic circuit structure forming the annular magnetic gap in the prior art, the voice coil 112 of the vibration sound generating unit 1 in the present utility model is mostly located in the magnetic gap, which has higher magnetic circuit utilization ratio, so that the voice coil 112 can obtain larger driving force.

According to the vibration sounding apparatus 100, the sounding unit 1 and the vibration unit 2 are innovatively integrated together, and compared with the traditional separate devices of the sounding unit 1 and the vibration unit 2, the 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.

In the embodiment of the present utility model, the vibration sound generating apparatus 100 has a width in the first direction and a length in the second direction, and the length 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 when applied to the electronic device. 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.

Further, the vibrator 23 vibrates along the first direction, and the first direction is perpendicular to the vibration direction of the diaphragm 111 and the second direction, that is, the vibration unit 2 adopts a linear vibration structure, which has the advantages of shorter start-stop time, stronger vibration feeling and easier control compared with the rotor motor structure, 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.

Preferably, the ratio of the length to the width of the vibration sound emitting device 100 is 1.5 or more: 1, i.e. the value of length/width may be 5, 4, 3, 2.5, 2, 1.5, etc., which may match the thickness space of different electronic devices. It can be appreciated that the ratio of the length to the width of the vibration/sound device 100 may be 1.2:1, etc., and in practical application, the size of the vibration/sound device 100 is flexibly adjusted according to the reserved space of the electronic device, which is not limited herein.

As one of the embodiments, as shown in fig. 1 and 3, 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 assembly 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 sound generating unit 1 is disposed on the support plate 213. The support plate 213 may also support the magnetic assembly of the sound generating unit 1, providing stability of the product structure as a whole.

In an embodiment, as shown in fig. 21 to 32, 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, the coil 22 is fixed on the housing 21 and disposed on a side of the vibrator 23 away from the sound generating unit 1, and the vibrator 23 vibrates along a first direction, which is perpendicular to the vibration direction and the second direction. Specifically, 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 occupation of the space of the electronic device 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 shock feeling. Meanwhile, the vibrator 23 of this scheme vibrates along the direction perpendicular to the vibration direction of the voice coil 112, that is, the vibration unit 2 adopts a linear vibration structure, compared with a rotor motor structure, the vibrator has the advantages of shorter starting and stopping time, stronger vibration feeling and easier control, and can promote the use experience of users.

In the embodiment of the present utility model, as shown in fig. 5, the voice coil 112 is elongated, and the length direction of the voice coil 112 is along the second direction. In this scheme, the second direction is the major axis direction of vibration unit 2, and the major axis of sound generating unit 1 and the major axis of vibration unit 2 correspond the setting promptly, are favorable to the integrated setting of sound generating unit 1 and vibration unit 2.

In this embodiment, as shown in fig. 23 to 32, the permanent magnet assembly 231 has a first magnetization region and a second magnetization region, and along the vibration direction of the diaphragm 111, a first magnetic gap and a second magnetic gap are formed between the first magnetization region and the second magnetization region of the permanent magnet assembly 231 and the housing 21, respectively, and 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. 23 and 24, 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. 25 and 26, 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. 27 and 28, 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, and the vibration unit 2 generates stronger vibration feeling.

In the above embodiment, the side of the permanent magnet assembly 231 away from the coil 22 may also be provided with the first magnetic conductive plate 233, and the first magnetic conductive plate 233 is disposed 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. 29 and 30, the permanent magnet assembly 231 includes a permanent magnet that 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, where the two first magnetic conductive members 234 serve as a first magnetization region and a second magnetization region, and a first magnetic gap and a second magnetic gap are formed between the two first magnetic conductive members 234 and the housing 21, respectively. 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 an embodiment, as shown in fig. 23 to 32, 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. 25, 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 buffer member 25 can buffer the impact of the vibrator 23 and the housing 21 during collision, thereby improving the vibration performance of the vibration unit 2 and improving the use experience of a user.

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, as shown in fig. 4 to 6, 13 and 15, the sound generating unit 1 further includes an auxiliary housing 13, and the vibration system 11 and the magnetic circuit system 12 are both fixed to the auxiliary housing 13, and the auxiliary housing 13 is fixedly connected to the housing 21 of the vibration unit 2. In this embodiment, 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 integrally injection molded or heat-pressed 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, so that the high-level waterproof requirement of electronic equipment such as a smart watch can be met.

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 one embodiment, as shown in fig. 5, 14, 16 and 20, the vibration system 11 further includes a frame 113, the frame 113 connects the diaphragm 111 and the voice coil 112, the voice coil 112 includes two long axis sides 1121 spaced along the vibration direction of the diaphragm 111 and a short axis side 1122 connecting the two long axis sides 1121, and the frame 113 is two and distributed at two ends of the voice coil 112 along the direction of the long axis sides 1121. It will be appreciated that the two long axis sides 1121 are the first wire segment and the second wire segment, respectively. By connecting the diaphragm 111 and the voice coil 112 through the bobbin 113, the height design of the voice coil 112 can be released, while facilitating adjustment of the position of the voice coil 112 in the magnetic gap. The frame 113 may be made of metal, such as aluminum or aluminum magnesium alloy, so as to improve the strength of the frame 113 and facilitate heat dissipation.

In this embodiment, the vibration system 11 further includes two conductive support plates 114, the conductive support plates 114 are distributed at two ends of the voice coil 112 corresponding to the frame 113, the conductive support plates 114 include a first fixing portion 1141, a cantilever 1142 and a second fixing portion 1143, which are sequentially connected, the first fixing portion 1141 is connected to one end of the frame 113 away from the diaphragm 111, and the second fixing portion 1143 is connected to the auxiliary housing 13. The conductive support 114 can realize the centering function of the voice coil 112 during the vibration process of the voice coil 112, so as to prevent the voice coil 112 from generating oblique vibration and polarization. Simultaneously, through electric connection voice coil 112 and external circuit of electrically conductive branch piece 114, can prevent to draw forth overlength with voice coil 112 lead wire, avoid the lead wire to interfere each other with other parts in the vibration process, also avoid the lead wire breakage risk.

Specifically, the auxiliary housing 13 is provided with a conductive terminal 1332, the first fixing portion 1141 of the conductive support piece 114 is provided with a first pad 11411, the second fixing portion 1143 is provided with a second pad 11431, the lead wire of the voice coil 112 is connected to the first pad 11411, and the second pad 11431 is connected to the conductive terminal 1332.

In this embodiment, the frame 113 includes a first connection portion 1131 connected to the diaphragm 111, a second connection portion 1132 bent and extended from the first connection portion 1131 toward the voice coil 112, a third connection portion 1133 formed by extending the second connection portion 1132 in a direction away from the voice coil 112, and a fourth connection portion 1134 formed by bending and extending the third connection portion 1133, where the first fixing portion 1141 is fixedly connected to the fourth connection portion 1134, and the two second connection portions 1132 are connected to two sides of the voice coil 112 along the first direction and respectively facing away from the voice coil 112. As can be appreciated, the two second connection portions 1132 are connected to both sides of the voice coil 112 in the first direction and to both sides facing away from the voice coil 112, respectively, so that the voice coil 112 can be uniformly supported, and the vibration stability of the voice coil 112 in the magnetic gap can be improved.

In this embodiment, the casing 21 of the vibration unit 2 is made of metal, and in order to improve the stability of connection between the sound unit 1 and the vibration unit 2, the annular bracket 131 is further embedded with a metal insert 132, and the metal insert 132 is welded and fixed with the metal casing 21. The metal insert 132 is annular, the metal insert 132 is provided with an avoidance groove 1321, and the magnetic component of the sound generating unit 1 is arranged in the avoidance groove 1321.

In this embodiment, the auxiliary shell 13 further includes two plastic parts 133, the two plastic parts 133 are disposed at two ends of the auxiliary shell 13 along the second direction, the plastic parts 133 are disposed in the avoidance grooves 1321, the plastic parts 133 are injection molded with conductive terminals 1332, the inner pads of the conductive terminals 1332 are electrically connected with the second pads 11431 of the conductive support pieces 114, and the outer pads of the conductive terminals 1332 are exposed on the outer side walls of the plastic parts 133, so as to be electrically connected with the flexible circuit board, and further electrically connected with an external circuit.

In the embodiment of the present utility model, as shown in fig. 4 to 6, each magnetic assembly includes a second magnetic conductive plate 121, and a first magnet 122 and a second magnet 123 sequentially disposed on one side of the second magnetic conductive plate 121 away from the diaphragm 111, where the first magnet 122 magnetizes along the vibration direction of the diaphragm 111, the magnetization direction of the second magnet 123 is perpendicular to the vibration direction of the diaphragm 111, the magnetic pole of one end of the second magnet 123 near the magnetic gap is opposite to the magnetic pole of one end of the first magnet 122 near the second magnetic conductive plate 121, the magnetization directions of two opposite first magnets 122 of the two magnetic assemblies are opposite, and the magnetization directions of two opposite second magnets 123 are the same. So set up, form first magnetic gap between two second magnetic conduction boards 121, first wire section is located first magnetic gap, forms the second magnetic gap between two second magnets 123, and the second wire section is located the second magnetic gap, and magnetic circuit 12's utilization ratio is higher, and voice coil 112 can obtain bigger driving force. Compared with a conventional sounding unit adopting an annular voice coil, the bottom of the magnetic circuit needs to be magnetically conducted through a magnetic conduction plate to realize magnetic field closure, the sounding unit 1 of the embodiment adopts the flat voice coil 112, and the second magnet 123 at the bottom of the magnetic circuit 12 is horizontally magnetized, so that the magnetic field closure can be realized without using the magnetic conduction plate. Further saving costs while improving the acoustic effect of the sound generating unit 1.

Alternatively, the second magnetic conductive plate 121 and the plastic portion 133 are integrally injection molded, and a limiting slot 1331 is formed between the two plastic portions 133, and the first magnet 122 and the second magnet 123 are disposed in the limiting slot 1331. It should be noted that, both ends of the two second magnetic conductive plates 121 are injection molded with the plastic portion 133, and the two second magnetic conductive plates 121 may be an integral structure or a split structure. The plastic part 133 is utilized to mold the second magnetic conduction plate 121 and form a magnet limiting structure, so that the separation and falling off of the magnetic assembly are effectively prevented when the product falls, and the connection firmness of the magnetic assembly is improved.

The two magnetic components defining the sound generating unit 1 are a first magnetic component and a second magnetic component, the first magnetization region of the permanent magnet assembly 231 corresponds to the first magnetic component and the second magnetization region corresponds to the second magnetic component along the vibration direction of the diaphragm 111, and no magnetically permeable member is provided between the permanent magnet assembly 231 and the two second magnets, as shown in fig. 6 to 12.

In the present embodiment, when the vibration sound generating apparatus 100 is in the operation state, the magnetic field of the sound generating unit 1 and the magnetic field of the vibration unit 2 have a coupling effect. As shown in fig. 6 to 8, the end of the second magnet 123 of the first magnetic assembly, which is close to the magnetic gap, is the N pole, and the end of the second magnet 123 of the second magnetic assembly, which is close to the magnetic gap, is the S pole; along the vibration direction of the diaphragm 111, the magnetic pole of the first magnetization region near one end of the first magnetic assembly is an N pole, and the magnetic pole of the second magnetization region near one end of the second magnetic assembly is an S pole; when vibrator 23 vibrates in the first direction, permanent magnet assembly 231 and magnetic circuit system 12 interact such that vibrator 23 receives the same magnetic force as the vibration direction of vibrator 23. I.e. a positive coupling between the two. As shown in fig. 9, when the vibrator 23 moves positively in the first direction, the vibrator 23 receives a positive magnetic force in the vibration direction, and when the vibrator 23 moves negatively in the first direction, the vibrator 23 receives a negative magnetic force in the vibration direction, and the direction of the magnetic force is opposite to the direction of the elastic restoring force of the elastic member 24, and the magnetic force acts as a "driving force" of the vibrator 23, so that the elastic member 24 becomes "soft", and at this time, the amplitude of the vibrator 23 is increased and the F0 of the vibration unit 2 is reduced without reducing the thickness of the elastic member 24 (improving the reliability of the vibration unit 2). For example, the F0 of the vibration unit 2 of the present utility model is pursued within 160Hz to 240Hz, which can make the vibration experience of the electronic device more pleasant. Alternatively, the thickness of the elastic member 24 may be increased under the same F0 and other conditions, improving the reliability of the vibration unit 2. Meanwhile, as shown in fig. 10, when combined with the vibration unit 2, the force factor BL of the sound generating unit 1 is also improved, that is, the driving force of the magnetic circuit system 12 to the voice coil 112 is enhanced, so that the acoustic performance of the sound generating unit 1 is further improved.

As above, when it is necessary to raise F0 of the vibration unit 2, the elastic member 24 may be thickened, so that the elastic member 24 is "hardened" to meet the target F0. When the vibration space of the vibrator 23 is limited and it is difficult to thicken the elastic member 24, a magnetizing mode shown in fig. 11 may be adopted, that is, the end of the second magnet 123 in the first magnetic assembly, which is close to the magnetic gap, is the N pole, and the end of the second magnet 123 in the second magnetic assembly, which is close to the magnetic gap, is the S pole; along the vibration direction of the diaphragm 111, the magnetic pole of the first magnetization region near one end of the first magnetic assembly is an N pole, and the magnetic pole of the second magnetization region near one end of the second magnetic assembly is an S pole; when vibrator 23 vibrates in the first direction, permanent magnet assembly 231 and magnetic circuit system 12 interact such that vibrator 23 is subjected to a magnetic force opposite to the vibration direction of vibrator 23. I.e. a negative coupling effect between the two. As shown in fig. 12, when the vibrator 23 moves positively in the first direction, the vibrator 23 receives a negative magnetic force in the vibration direction, and when the vibrator 23 moves negatively in the first direction, the vibrator 23 receives a positive magnetic force in the vibration direction, the direction of which is the same as the direction of the elastic restoring force of the elastic member 24, and serves as "resistance" during vibration of the vibrator 23, so that the elastic member 24 is "hardened" to elevate the F0 of the vibration unit 2.

When the vibration sound generating device 100 is in a non-working state, the vibrator 23 is in a rest position, the magnetic circuit system 12 of the sound generating unit 1 and the permanent magnet assembly 231 of the vibration unit 2 interact to enable the vibrator 23 to have attraction and repulsion forces on two sides of the rest position along the first direction respectively, the permanent magnet assembly 231 is in force balance, and the reliability of the vibration unit 2 is improved.

It can be seen that the vibration and sound device 100 of the present utility model has better vibration and sound performance after the magnetic circuit 12 of the sound generating unit 1 and the permanent magnet assembly 231 of the vibration unit 2 interact to realize the integration of the two, and the magnetizing mode of the magnetic circuit 12 of the sound generating unit 1 not only improves the magnetic field driving force of the sound generating unit 1, but also has the coupling effect with the permanent magnet assembly 231 of the vibration unit 2. Meanwhile, the magnetizing mode of the permanent magnet assembly 231 of the vibration unit 2 is also set according to the requirement, so as to achieve positive coupling or negative coupling with the magnetic field of the magnetic circuit system 12 of the sound generating unit 1.

In an embodiment, as shown in fig. 13 to 15 and 17, the diaphragm 111 includes a diaphragm body 1111 and a vibrating plate 1112, the vibrating plate 1112 is disposed in a central area of the diaphragm body 1111, the vibrating plate 1112 is provided with first reinforcing ribs 11121 corresponding to the frame 113, the first reinforcing ribs 11121 are annular and enclose a connection area, and the frame 113 is fixedly connected with the connection area. Specifically, the first reinforcing rib 11121 is formed recessed from a side of the diaphragm 111 facing away from the voice coil 112 toward a side facing the voice coil 112. The first reinforcing ribs 11121 enclose to form a connection area fixed with the frame 113, and more glue can be stored in the connection area to enhance the connection stability between the diaphragm 111 and the frame 113.

Further, the vibration plate 1112 is further provided with second reinforcing ribs 11122 provided in the second direction, and both ends of the second reinforcing ribs 11122 are connected to the first reinforcing ribs 11121. The vibration plate 1112 is provided with the first reinforcing ribs 11121 and the second reinforcing ribs 11122, so that the strength of the diaphragm 111 can be improved, and the acoustic performance of the sound generating unit 1 can be improved. It will be appreciated that the first reinforcing rib 11121 and the second reinforcing rib 11122 may be integrally formed by stamping, or may be formed separately.

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 one embodiment, as shown in fig. 17, the diaphragm 111 protrudes in a direction away from the voice coil 112, and the diaphragm 111 includes a central portion 1113 located in the middle and edge portions 1114 located at both ends of the central portion 1113 in the second direction and bent toward a direction approaching the voice coil 112. Therefore, the internal space of the electronic equipment, such as the internal space of the circular intelligent watch, can be more fully utilized, and a larger space, such as a battery and the like, is reserved for other parts in the electronic equipment, so that the endurance time of the electronic equipment can be prolonged. It should be noted that, the scheme in this embodiment may also be applied to other intelligent terminals, such as VR, AR, a handle, a mobile phone, and other devices.

Further, the central portion 1113 is a flat or curved portion, and the edge portion 1114 is a flat or curved portion. As one of the embodiments, as shown in fig. 11, the central portion 1113 is a planar portion, and the edge portion 1114 is a curved portion, so that the arrangement can not only efficiently utilize the space of the whole machine, but also has the advantage of more convenient production and inspection, and meanwhile, improves the yield of the product.

As shown in fig. 1 to 3 and 21 to 33, the vibration and sound device 100 of the present utility model further includes an FPCB3, wherein the FPCB3 includes a first conductive end (not shown in the drawings), 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 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 in the housing 21 and fixed between the coil 22 and the housing 21, and a second portion 32 extending out of the housing 21, the first portion 31 is provided with a first conductive end, the second portion 32 is provided with a second conductive end 321 and a third conductive end 322, the first conductive end is connected to the coil 22, the second conductive end 321 extends to the plastic portion 133 and is connected to the conductive terminal 1332, and the third conductive end 322 is connected to an external circuit.

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 an embodiment, as shown in fig. 22, the casing 21 of the vibration unit 2 is provided with a avoiding through hole 210 opposite to the magnetic gap, the size of the avoiding through hole 210 is larger than the projected size of the voice coil 112 along the vibration direction of the diaphragm 111, and the avoiding through hole 210 is used for increasing the lower vibration space of the voice coil 112, so as to further reduce the height size of the vibration sound generating device 100.

Specifically, the housing 21 includes a bottom plate 211 and side plates 212 connected to the periphery of the bottom plate 211, and two side plates 212 disposed opposite to each other are bent and extended toward the inside of the housing to form a support plate 213, and the magnetic assembly of the sound generating unit 1 is disposed on the support plate 213, and the two support plates 213 are spaced apart and the interval therebetween forms an avoidance through hole 210.

Further, a second groove (not labeled in the figure) is disposed on the surface of the mass block 232 facing away from the coil 22, the second groove is opposite to the avoidance hole 210, the size of the second groove is larger than the projected size of the voice coil 112 along the vibration direction, and the second groove is used for further increasing the lower vibration space of the voice coil 112. In this way, the thickness dimension of the sound generating unit 1 can be further reduced, and the occupation of the internal space of the electronic apparatus can be reduced.

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. 15, 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, the diaphragm 111 includes a diaphragm body 1111 and a diaphragm 1112, the diaphragm 1112 is disposed at a central position of the diaphragm body 1111, 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 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 vibrating plate.

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 improve the structural strength of the vibrating plate 1112, further improve the rigidity and damping performance thereof, improve the vibration performance of the vibrating diaphragm, and further improve 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 utility model also provides an electronic device 200 (as shown in fig. 34), and the electronic device 200 includes a device housing 201 and the vibration sound generating device 100, where the vibration sound generating 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 has a thickness along the first direction, when the vibration sounding device 100 is placed in the device housing 201, the vibration direction of the vibrator 23 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 is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A vibration sound producing apparatus, comprising:

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 1.5 x the width.

3. The vibration-sound-producing device of claim 1, wherein the permanent magnet assembly comprises a permanent magnet comprising a first magnetized area and a second magnetized area distributed along the first direction, wherein the first magnetized area and the second magnetized area are magnetized along the vibration direction of the diaphragm and are opposite in magnetization direction, the first magnetized area and the second magnetized area serve as the first magnetized area and the second magnetized area respectively, and the first magnetized area and the second magnetized area form the first magnetic gap and the second magnetic gap respectively with the housing;

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 and the mass block are welded and fixed or the elastic piece and the shell are welded and fixed;

and/or the first coil section and the second coil section are long axis sections of the coil.

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/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.

8. The vibration and sound device according to claim 7, wherein the vibration unit further includes buffering members distributed on both sides of the vibrator in the first direction.

9. The vibration and sound device according to claim 8, 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.

10. The vibration-sound-producing device according to claim 1, wherein each of the magnetic assemblies includes a second magnetic conductive plate, and a first magnet and a second magnet which are sequentially provided on a side of the second magnetic conductive plate away from the diaphragm, the first magnet being magnetized in a vibration direction of the diaphragm, the second magnet being magnetized in the first direction, a magnetic pole of an end of the second magnet near the magnetic gap being opposite to a magnetic pole of an end of the first magnet near the second magnetic conductive plate;

11. A vibration and sound device according to any one of claims 1 to 3, wherein each of the magnetic assemblies includes a second magnetic conductive plate, and a first magnet and a second magnet which are sequentially provided on a side of the second magnetic conductive plate away from the diaphragm, the first magnet being magnetized in a vibration direction of the diaphragm, the second magnet being magnetized in the first direction, a magnetic pole of the second magnet near an end of the magnetic gap being opposite to a magnetic pole of the first magnet near an end of the second magnetic conductive plate;

12. The vibration-sound-producing device of claim 11, wherein,

the second magnet in the first magnetic assembly is N pole near one end of the magnetic gap, and S pole near one end of the magnetic gap;

13. The vibration-sound-producing device of claim 11, wherein,

14. 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;

15. An electronic device comprising a device housing and a vibration sound emitting apparatus according to any one of claims 1 to 14, the vibration sound emitting apparatus being provided in the device housing.

16. The electronic device of claim 15, wherein the first direction is a thickness direction of the electronic device;