CN118200816A - Vibration sounding device and electronic equipment - Google Patents

Abstract

The invention discloses a vibration sounding device and electronic equipment. The central magnetic part and the side magnetic part are arranged at intervals to define a magnetic gap, the central magnetic part comprises a plurality of first sub-center magnets which are distributed at intervals along a first direction, at least part of the first sub-center magnets form a halbach array, and the magnetizing directions of the first sub-center magnets positioned at the two ends of the central magnetic part along the first direction are opposite to the magnetizing directions of the side magnets. The first vibration system and the second vibration system are respectively arranged on two opposite sides of the first magnetic circuit system, the first vibration system comprises a vibrating diaphragm assembly and a voice coil, the second vibration system comprises an elastic connecting piece and a vibrator assembly, the vibrator assembly is suspended in an installation space by the elastic connecting piece, the vibrator assembly comprises a driving coil, and the driving coil and the central magnetic part are oppositely arranged along a second direction. The vibration sounding device has good sounding and vibration effects.

Description

Vibration sounding device and electronic equipment

Technical Field

The invention relates to the field of electroacoustic equipment, in particular to a vibration sounding device and electronic equipment.

Background

Intelligent terminal devices, especially mobile phone products, often need to have both audio experience and vibrotactile feedback experience functions. Wherein the audio experience is from a sound generating unit and the vibrotactile feedback experience is from a vibration unit.

In the related art, a vibration sound generating module in which a sound generating unit and a vibration unit are integrated is proposed. The sound generating unit and the vibration unit share a set of magnetic circuit system, and the magnetic circuit system is utilized to provide driving force for the voice coil of the sound generating unit and the driving coil of the motor unit. However, as the requirements on the comprehensive performance of the terminal product are higher, the requirements on the sounding sensitivity of the sounding unit and the vibration feeling of the motor unit are difficult to be considered in the structural design, and the use requirements of the user on the terminal product cannot be met.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the vibration sounding device which has the advantages of simple and compact structure and good sounding and vibration effects.

The invention also provides electronic equipment with the vibration sounding device.

According to an embodiment of the first aspect of the present invention, a vibration sound generating apparatus includes: the shell is made of a metal material piece or a metal and plastic composite material piece, and an installation space is defined in the shell; the first magnetic circuit system comprises a magnetic yoke, a central magnetic part and a side magnetic part, wherein the central magnetic part and the side magnetic part are arranged on the magnetic yoke, the magnetic yoke is connected with the shell, the side magnetic part is arranged on the outer side of the central magnetic part and is spaced from the central magnetic part to define a magnetic gap, the central magnetic part comprises a plurality of first sub-central magnets which are distributed at intervals along a first direction, and the side magnetic part comprises side magnets; the first vibration system vibrates along a second direction perpendicular to the first direction, the first vibration system and the second vibration system are respectively arranged on two opposite sides of the first magnetic circuit system along the second direction, the first vibration system comprises a vibrating diaphragm assembly and a voice coil, one end of the voice coil is connected with the vibrating diaphragm assembly, and the other end of the voice coil is correspondingly arranged with the magnetic gap; the second vibration system is arranged in the installation space and vibrates along the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, two ends of the elastic connecting piece are respectively connected with the vibrator assembly and the inner wall of the shell, the vibrator assembly comprises a driving coil, and the driving coil and the central magnetic part are oppositely arranged along the second direction; at least part of the first sub-center magnets form a halbach array, and magnetizing directions of the first sub-center magnets positioned at two ends of the center magnetic part along the first direction are opposite to magnetizing directions of the side magnets.

According to the vibration sound generating device of the embodiment of the first aspect of the invention, the halbach array is formed by arranging at least part of the first sub-center magnets, and the magnetizing directions of the first sub-center magnets at the two ends of the center magnetic part along the first direction are opposite to the magnetizing directions of the side magnets, so that the driving force acting on the first vibration system can be ensured to meet the actual sound generating requirement, and the sound generating sensitivity of the vibration sound generating device is ensured; and moreover, the magnetic induction lines generated by the halbach array in the central magnetic part are intensively acted on the driving coil, so that the driving force acted on the second vibration system can be ensured to meet the actual vibration induction requirement, and the vibration induction effect generated by the vibration sounding device is improved. In addition, the vibration sounding device adopts a set of magnetic circuit system to drive the first vibration system and the second vibration system respectively, and uses part of the magnetic field of the central magnetic part as the magnetic field of the second vibration system, so that the magnetic field utilization rate of the central magnetic part can be improved, a set of magnetic circuit system is saved, the production cost is reduced, and in addition, the assembly space occupied by a set of magnetic circuit system can be saved, thereby meeting the miniaturization and light-weight design of the vibration sounding device.

According to some embodiments of the invention, the first sub-center magnets are five, and the five first sub-center magnets together form a first halbach array, and a magnetic field enhancing side of the first halbach array is located on a side of the central magnetic portion facing the driving coil.

In some embodiments of the present invention, the plurality of first sub-center magnets include a first magnet magnetized in the first direction and a second magnet magnetized in the second direction, the first halbach array includes two first magnets and three second magnets, the three second magnets are spaced apart in the first direction and located at a middle position, the second magnets are opposite to the second magnets located at two ends, the magnetizing directions of the two first magnets are opposite, and two sides of each first magnet are provided with the second magnets opposite to the magnetizing directions.

In some embodiments of the present invention, two driving coils are disposed opposite to two first magnets, where each driving coil includes two oppositely disposed connecting edges, and along the second direction, the two connecting edges are disposed opposite to the second magnets on two sides of the corresponding first magnets.

According to some embodiments of the invention, the central magnetic part further includes a second sub-center magnet provided at both ends of a third direction of the plurality of first sub-center magnets, the third direction being perpendicular to the first direction and the second direction, respectively, and both ends of the second sub-center magnet being flush with both ends of the plurality of first sub-center magnets along the first direction.

According to some embodiments of the invention, the plurality of first sub-center magnets include a plurality of third magnets located at intermediate positions and two fourth magnets located at two sides of the plurality of third magnets, the plurality of third magnets form a second halbach array, a magnetic field reinforcing side of the second halbach array is located at a side of the center magnetic portion facing the driving coil, and magnetizing directions of the two fourth magnets are the same and opposite to magnetizing directions of the side magnets.

In some embodiments of the present invention, the vibration sounding apparatus further includes a second magnetic circuit system, where the second magnetic circuit system is disposed on a side of the driving coil facing away from the first magnetic circuit system, the second magnetic circuit system is provided with a plurality of fifth magnets forming a third halbach array, and a magnetic field enhancing side of the third halbach array is disposed on a side of the second magnetic circuit system facing the driving coil.

In some embodiments of the present invention, the third magnet at the middle position of the second halbach array and the fifth magnet at the middle position of the third halbach array are magnetized along the first direction and the magnetizing directions are opposite, and the magnetizing directions of the third magnet at the two ends of the second halbach array and the fifth magnet at the two ends of the corresponding third halbach array are the same; and/or the number of magnets in the second halbach array is the same as the number of magnets in the third halbach array.

In some embodiments of the present invention, the second halbach array includes three third magnets, the third magnets located at the center are magnetized in the first direction, and two of the third magnets located at the two ends are magnetized in the second direction and the magnetizing directions are opposite; the vibration sounding device further comprises a second magnetic circuit system, the second magnetic circuit system is arranged on one side, opposite to the first magnetic circuit system, of the driving coil, the second magnetic circuit system comprises two sixth magnets which are magnetized along the second direction and have opposite magnetizing directions, and the two sixth magnets are opposite to the two third magnets at the positions of the two ends one by one along the second direction and have the same magnetizing directions; the driving coil is provided with two connecting edges which are oppositely arranged, and each connecting edge is positioned between the third magnet and the sixth magnet which are oppositely arranged along the second direction.

According to some embodiments of the invention, the magnetic yoke includes a body portion and a hollow hole provided in the body portion, the side magnetic portion and the first sub-center magnet located at two end positions are both provided in the body portion, and along the second direction, the hollow hole is at least partially opposite to the driving coil; or, the central magnetic part further comprises second sub-center magnets arranged at two ends of the first sub-center magnets in the third direction, the side magnetic part and the second sub-center magnets are arranged on the body part, and the hollowed holes and the driving coils are at least partially arranged opposite to each other along the second direction.

According to some embodiments of the invention, the casing includes a main body portion and a bending portion disposed at an outer periphery of the main body portion, the bending portion bends and extends towards a direction approaching the first vibration system relative to the main body portion, one end of the elastic connecting piece is fixed to the bending portion, a supporting block is disposed on the main body portion, and the magnetic conductive yoke is supported and fixed to the supporting block.

In some embodiments of the present invention, a positioning groove is formed on the outer peripheral side of the magnetic conductive yoke, a positioning protrusion corresponding to the positioning groove is formed on the bending part, and the positioning protrusion is inserted into the corresponding positioning groove; and/or the bending part is flush with the peripheral wall of the first magnetic circuit system.

An electronic apparatus according to an embodiment of the second aspect of the present invention includes the vibration sound emitting device according to the above-described embodiment of the present invention.

According to the electronic equipment of the second aspect of the embodiment of the invention, by arranging the vibration sounding device, the structural design of the vibration sounding device is compact, the sound sounding effect and the vibration effect are good, the design requirement of the electronic equipment for lightening and thinning can be met, the electronic equipment can also have good tone quality and vibration feedback effect, and the market competitiveness of the electronic equipment product is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an exploded construction of a vibratory sound device according to a first embodiment of the invention;

fig. 2 is a vertical sectional view of a vibration sound emitting device according to a first embodiment of the present invention;

fig. 3 is a schematic diagram showing the arrangement of magnets of a magnetic circuit system of a vibration sound-producing device according to a first embodiment of the present invention;

FIG. 4 is a schematic diagram showing a magnetizing state of a magnetic circuit system of a vibration sound generating apparatus according to a first embodiment of the present invention;

FIG. 5 is a schematic diagram of an exploded construction of a vibration sound emitting device according to a second embodiment of the present invention;

FIG. 6 is a vertical cross-sectional view of a vibratory sound device according to a second embodiment of the invention;

Fig. 7 is a schematic diagram showing the arrangement of magnets of a magnetic circuit system of a vibration sound-producing device according to a second embodiment of the present invention;

FIG. 8 is a schematic diagram showing a magnetizing state of a magnetic circuit system of a vibration sound emitting device according to a second embodiment of the present invention;

Fig. 9 is a vertical sectional view of a vibration sound emitting device according to a third embodiment of the present invention;

fig. 10 is a schematic diagram showing the arrangement of magnets of a magnetic circuit system of a vibration sound-producing device according to a third embodiment of the present invention;

fig. 11 is a schematic diagram showing a magnetizing state of a magnetic circuit system of a vibration sound emitting device according to a third embodiment of the present invention.

Reference numerals:

The sound-emitting device 100 is vibrated,

The housing 1, the installation space 1a, the main body 11, the bending portion 12,

The first magnetic circuit 2, the magnetic yoke 21, the body portion 211, the hollowed hole 21a, the positioning groove 21b, the central magnetic portion 22, the first sub-center magnet 221, the first magnet 221a, the second magnet 221b, the third magnet 221c, the fourth magnet 221d, the second sub-center magnet 222, the central magnetic conductive plate 223, the side magnetic portion 23, the side magnet 231, the side magnetic conductive plate 232, the first halbach array 2a, the second halbach array 2b,

The second magnetic circuit 3, the third halbach array 3a, the fifth magnet 31, the sixth magnet 32,

The first vibration system 4, the diaphragm assembly 41, the diaphragm 411, the diaphragm 412, the voice coil 42, the centering plate 43,

The second vibration system 5, the elastic connection piece 51, the vibrator assembly 52, the balancing weight 521, the assembly groove 521a, the driving coil 522, the connection edge 5221 and the motor support piece 53;

A basin stand 6.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar components or components having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Hereinafter, a vibration/sound generating device 100 according to an embodiment of the first aspect of the present invention will be described in detail with reference to fig. 1 to 11, and the vibration/sound generating device 100 may be a speaker unit or a speaker module having both sound generating and vibration functions.

As shown in fig. 1 to 2,5 to 6, and 9, a vibration sound emitting device 100 according to an embodiment of the first aspect of the present invention includes: a housing 1, a first magnetic circuit system 2, a first vibration system 4 and a second vibration system 5.

The housing 1 may be a metal material or a metal-plastic composite material, for example, the housing 1 may be made of a stainless steel material, or the housing 1 may include two parts, one of which is a metal piece and the other of which is a plastic piece. The housing 1 may define therein an installation space 1a. The first magnetic circuit 2 includes a yoke 21, a central magnetic portion 22 provided on the yoke 21, and a side magnetic portion 23, the yoke 21 being connected to the housing 1, the side magnetic portion 23 being provided outside the central magnetic portion 22 and being spaced apart from the central magnetic portion 22 by a magnetic gap, the central magnetic portion 22 including a plurality of first sub-central magnets 221 spaced apart in a first direction (e.g., a horizontal x-direction), the side magnetic portion 23 including a side magnet 231.

As shown in fig. 2, 6 and 9, the first vibration system 4 vibrates along a second direction (for example, a vertical z direction) perpendicular to the first direction, and along the second direction, the first vibration system 4 and the second vibration system 5 are respectively disposed on two opposite sides of the first magnetic circuit system 2, the first vibration system 4 includes a diaphragm assembly 41 and a voice coil 42, one end of the voice coil 42 is connected with the diaphragm assembly 41, and the other end of the voice coil 42 is disposed corresponding to the magnetic gap. The second vibration system 5 is disposed in the installation space 1a and vibrates along the first direction, the second vibration system 5 includes an elastic connection piece 51 and a vibrator assembly 52, two ends of the elastic connection piece 51 are respectively connected with the vibrator assembly 52 and the inner wall of the housing 1, the vibrator assembly 52 can be suspended in the installation space 1a by the elastic connection piece 51, the vibrator assembly 52 includes a driving coil 522, and the driving coil 522 is disposed opposite to the central magnetic portion 22 along the second direction.

Specifically, the first magnetic circuit system 2 and the first vibration system 4 may constitute a sound generating unit of the vibration sound generating device 100. The first vibration system 4 may include a diaphragm assembly 41 and a voice coil 42, wherein one end of the voice coil 42 is connected to the diaphragm assembly 41, and the other end of the voice coil 42 is disposed corresponding to the magnetic gap. Alternatively, the other end of the voice coil 42 may be disposed opposite the magnetic gap in the second direction, that is, the other end of the voice coil 42 is located outside the magnetic gap. Of course, the other end of the voice coil 42 may be inserted into the magnetic gap in the second direction. When the sound generating unit works, current is introduced into the voice coil 42, and the voice coil 42 is driven by magnetic force to vibrate reciprocally along the second direction, so that the vibrating diaphragm assembly 41 can be driven to vibrate and generate sound, and the sound generating effect of the sound generating unit is realized. Optionally, the diaphragm assembly 41 may include a diaphragm 411 and a vibration plate 412 disposed on the diaphragm 411, the sound generating unit may further include a frame 6, the periphery of the diaphragm 411 may be fixed to the frame 6, one end of the voice coil 42 may be connected to the vibration plate 412, and the first magnetic circuit system 2 may be fixed to the frame 6. The first vibration system 4 may further include a centering support piece 43, one end of the centering support piece 43 is connected with the bottom of the voice coil 42, the other end of the centering support piece 43 is connected with the basin frame 6, the centering support piece 43 may play a role in balancing the vibration of the voice coil 42, and the running stability of the first vibration system 4 is improved.

The first magnetic circuit system 2 and the second vibration system 5 may constitute a motor unit of the vibration sound generating apparatus 100. The second vibration system 5 may include an elastic connection member 51 and a vibrator assembly 52, where two ends of the elastic connection member 51 are connected to the vibrator assembly 52 and the inner wall of the housing 1, respectively. The vibrator assembly 52 may include a mass and a driving coil 522 provided to the mass, and the driving coil 522 is disposed opposite to the central magnetic portion 22 of the first magnetic circuit system 2 in the second direction. When the motor unit is operated, a current is supplied to the driving coil 522, and the driving coil 522 is driven by the magnetic field force of the central magnetic portion 22 to reciprocate, so that the motor unit can generate a vibration feeling.

As shown in fig. 2, 6 and 9, at least part of the first sub-center magnets 221 form halbach arrays, and the magnetizing directions of the first sub-center magnets 221 located at both ends of the center magnetic portion 22 in the first direction are opposite to the magnetizing directions of the side magnets 231. That is, all the first sub-center magnets 221 may form a halbach array, or some of the plurality of first sub-center magnets 221 may form a halbach array.

It will be appreciated that since the central magnetic portion 22 not only needs to cooperate with the side magnetic portion 23 to form a magnetic gap for cooperation with the voice coil 42 to provide a driving force for driving the first vibration system 4 to vibrate, the central magnetic portion 22 also needs to cooperate with the driving coil 522 to provide a driving force for driving the second vibration system 5 to vibrate. By arranging at least part of the first sub-center magnets 221 to form a halbach array, and the magnetizing directions of the first sub-center magnets 221 at the two ends of the center magnetic part 22 along the first direction are opposite to the magnetizing directions of the side magnets 231, the driving force acting on the first vibration system 4 can be ensured to meet the actual sounding requirement, and the sounding sensitivity of the vibration sounding device 100 is ensured; moreover, the halbach array may function to gather magnetic induction lines, may function to generate strong magnetic field strength in the case of a limited magnet, and the magnetic induction lines generated by the halbach array in the central magnetic portion 22 may intensively act on the driving coil 522, so that it may be ensured that the driving force acting on the second vibration system 5 satisfies the actual vibration induction requirement, and the vibration induction effect generated by the vibration sound generating device 100 may be improved.

According to the vibration/sound device 100 of the first embodiment of the present invention, the halbach array is formed by disposing at least part of the first sub-center magnets 221, and the magnetizing directions of the first sub-center magnets 221 along the two ends of the first direction of the center magnetic portion 22 are opposite to the magnetizing directions of the side magnets 231, so that the driving force acting on the first vibration system 4 can be ensured to meet the actual sound requirement, and the sound sensitivity of the vibration/sound device 100 is ensured; in addition, the magnetic induction lines generated by the halbach array in the central magnetic portion 22 can be concentrated on the driving coil 522, so that the driving force acting on the second vibration system 5 can be ensured to meet the actual vibration induction requirement, and the vibration induction effect generated by the vibration sound generating device 100 can be improved. In addition, the vibration sounding device 100 adopts a set of magnetic circuit system to drive the first vibration system 4 and the second vibration system 5 respectively, and uses part of the magnetic field of the central magnetic part 22 as the magnetic field of the second vibration system 5, so that the magnetic field utilization rate of the central magnetic part 22 can be improved, a set of magnetic circuit system is saved, the production cost is reduced, and in addition, the assembly space occupied by a set of magnetic circuit system can be saved, thereby meeting the miniaturization and light-weight design of the vibration sounding device 100.

As shown in fig. 3-4, according to some embodiments of the present invention, the number of first sub-center magnets 221 is five, and the five first sub-center magnets 221 together form a first halbach array 2a, and the magnetic field enhancing side of the first halbach array 2a is located on the side of the central magnetic portion 22 facing the driving coil 522. Specifically, the halbach array functions to concentrate magnetic induction lines on one side thereof, i.e., to form a magnetic field reinforcing side. By controlling all five first sub-center magnets 221 to form the first halbach array 2a together, on the premise of meeting the sound production requirement of the first vibration system 4, the magnetic field intensity of the magnetic field enhancement side can be increased, and along the second direction, the magnetic field enhancement side of the first halbach array 2a is located on the side of the center magnetic portion 22 facing the driving coil 522, so that the magnetic field intensity acting on the driving coil 522 can be increased, and the vibration effect of the second vibration system 5 can be improved.

As shown in fig. 2, in some embodiments of the present invention, the plurality of first sub-center magnets 221 include a first magnet 221a magnetized in a first direction and a second magnet 221b magnetized in a second direction, the first halbach array 2a includes two first magnets 221a and three second magnets 221b, the three second magnets 221b are spaced apart in the first direction and the second magnets 221b located at intermediate positions are opposite to the second magnets 221b located at both ends, the magnetizing directions of the two first magnets 221a are opposite, and both sides of each first magnet 221a are provided with the second magnets 221b opposite to the magnetizing directions. For example, the first direction may be a horizontal x direction, and the second direction may be a vertical z direction, wherein a first sub-center magnet 221 magnetized in the horizontal x direction among the five first sub-center magnets 221 is a first magnet 221a, and a first sub-center magnet 221 magnetized in the vertical z direction among the five first sub-center magnets 221 is a second magnet 221b. The side magnets 231 of the first magnetic circuit system 2 are also magnetized along the vertical z direction and along the direction from bottom to top, the two magnets at the two ends of the first halbach array 2a are both the second magnets 221b and are magnetized along the direction from top to bottom, the magnet at the middle position of the first halbach array 2a is the second magnet 221b and is magnetized along the direction from bottom to top, one first magnet 221a is respectively arranged between the second magnet 221b at the middle position and the two second magnets 221b at the two ends, and the two first magnets 221a are magnetized along the direction of horizontal x and towards the direction of the second magnet 221b close to the middle position.

Thus, through the above design, the two second magnets 221b at the two ends of the first halbach array 2a and the side magnets 231 magnetize in opposite directions to form a magnetic loop acting on the voice coil 42, so as to meet the sounding requirement of the first vibration system 4, and the magnet arrangement of the first halbach array 2a can form a magnetic field strengthening side on the side of the central magnetic part 22 facing the driving coil 522, so that the magnetic field strength acting on the driving coil 522 is increased, and the vibration effect of the second vibration system 5 is improved.

As shown in fig. 2, in some embodiments of the present invention, two driving coils 522 are disposed opposite to two first magnets 221a, wherein each driving coil 522 includes two opposite connection sides 5221, and the two connection sides 5221 are disposed opposite to the second magnets 221b on both sides of the corresponding first magnets 221a along the second direction, so that the connection sides 5221 of each driving coil 522 can be placed at a position where magnetic induction lines are concentrated, thereby increasing the magnetic field strength acting on the driving coils 522 and improving the vibration effect of the second vibration system 5. It should be noted that the number of the driving coils 522 is not limited to two, and may be selected according to actual use requirements, which is not particularly limited by the present invention.

As shown in fig. 4, 8 and 11, according to some embodiments of the present invention, the center magnetic part 22 further includes second sub-center magnets 222 provided at both ends of the third direction of the plurality of first sub-center magnets 221, the third direction being perpendicular to the first direction and the second direction, respectively, and both ends of the second sub-center magnets 222 being aligned with both ends of the plurality of first sub-center magnets 221 along the first direction, whereby the two first sub-center magnets 221 and the two second sub-center magnets 222 at the ends can form a uniform magnetic field matched with the side magnets 231, and the sound emitting effect of the first vibration system 4 can be ensured. Moreover, along the first direction, the two ends of the second sub-center magnet 222 are flush with the two ends of the plurality of first sub-center magnets 221, so that the overall structure of the first magnetic circuit system 2 is more compact and regular, and the assembly is convenient.

As shown in fig. 6 and 9, according to some embodiments of the present invention, the plurality of first sub-center magnets 221 include a plurality of third magnets 221c located at intermediate positions and two fourth magnets 221d located at both sides of the plurality of third magnets 221c, the plurality of third magnets 221c form a second halbach array 2b, the magnetic field enhancing side of the second halbach array 2b is located at the side of the center magnetic portion 22 facing the driving coil 522, and the magnetizing directions of the two fourth magnets 221d are the same and opposite to the magnetizing directions of the side magnets 231.

For example, the first direction may be a horizontal x direction (left-right direction), the second direction may be a vertical z direction (up-down direction), the side magnets 231 of the first magnetic circuit system 2 are also magnetized in the vertical z direction and magnetized in the top-down direction, the two fourth magnets 221d are magnetized in the vertical z direction and in the bottom-up direction, the third magnets 221c are formed in three, the third magnets 221c located at the intermediate positions are magnetized in the horizontal x direction (right-left direction), the two third magnets 221c located at the both end positions are magnetized in the vertical z direction, the third magnets 221c located at the left side of the third magnets 221c at the intermediate positions are magnetized in the top-down direction, and the third magnets 221c located at the right side of the third magnets 221c at the intermediate positions are magnetized in the bottom-up direction. Thus, the third magnets 221c at the intermediate positions constitute the second halbach array 2b, and the magnetic field reinforcing side of the second halbach array 2b is located on the side of the central magnetic portion 22 facing the driving coil 522, increasing the magnetic field strength acting on the driving coil 522. In addition, the two fourth magnets 221d located on the left and right sides of the second halbach array 2b and the side magnets 231 are magnetized in opposite directions to form a magnetic circuit acting on the voice coil 42, so as to meet the sound emission requirement of the first vibration system 4.

As shown in fig. 5 to 8, in some embodiments of the present invention, the vibration and sound device 100 further includes a second magnetic circuit system 43, where the second magnetic circuit system 43 is disposed on a side of the driving coil 522 facing away from the first magnetic circuit system 2, the second magnetic circuit system 43 is provided with a plurality of fifth magnets 31 forming a third halbach array 3a, and a magnetic field enhancing side of the third halbach array 3a is located on a side of the second magnetic circuit system 43 facing the driving coil 522, so that the first magnetic circuit system 2 and the second magnetic circuit system 43 respectively form halbach arrays with magnetic field enhancing sides facing the driving coil 522, thereby further improving the magnetic field strength acting on the driving coil 522 and further improving the vibration effect of the second vibration system 5.

As shown in fig. 6, in some embodiments of the present invention, the third magnet 221c located in the middle of the second halbach array 2b and the fifth magnet 31 located in the middle of the third halbach array 3a are magnetized in the first direction and the magnetizing directions are opposite, and the magnetizing directions of the third magnet 221c located at the two ends of the second halbach array 2b and the magnetizing directions of the fifth magnet 31 located at the two ends of the corresponding third halbach array 3a are the same, so that the second halbach array 2b and the third halbach array 3a can generate a closed magnetic induction loop acting with the driving coil 522, and the magnetic field strength acting on the driving coil 522 is increased.

Alternatively, the number of magnets in the second halbach array 2b is the same as the number of magnets in the third halbach array 3 a. For example, as shown in fig. 6, the second halbach array 2b includes three third magnets 221c, and the third halbach array 3a includes three fifth magnets 31, wherein the third magnets 221c located at the intermediate positions are magnetized from right to left in the horizontal x direction, the third magnets 221c located at the left sides of the third magnets 221c located at the intermediate positions are magnetized from top to bottom in the vertical z direction, and the third magnets 221c located at the right sides of the third magnets 221c located at the intermediate positions are magnetized from bottom to top in the vertical z direction. The fifth magnet 31 positioned at the intermediate position is magnetized from left to right in the horizontal x direction, the fifth magnet 31 positioned at the left side of the fifth magnet 31 positioned at the intermediate position is magnetized from top to bottom in the vertical z direction, and the fifth magnet 31 positioned at the right side of the fifth magnet 31 positioned at the intermediate position is magnetized from bottom to top in the vertical z direction. Thus, by the above arrangement, the magnetic induction lines on both sides of the driving coil 522 can be distributed more uniformly, and the vibration effect of the second vibration system 5 can be improved.

As shown in fig. 9-11, in some embodiments of the present invention, the second halbach array 2b includes three third magnets 221c, the third magnets 221c located at the center are magnetized in the first direction, and the two third magnets 221c located at the two ends are magnetized in the second direction and the magnetizing directions are opposite; the vibration and sound device 100 further includes a second magnetic circuit system 43, where the second magnetic circuit system 43 is disposed on a side of the driving coil 522 opposite to the first magnetic circuit system 2, the second magnetic circuit system 43 includes two sixth magnets 32 magnetized in a second direction and opposite to the magnetizing direction, and the two sixth magnets 32 are opposite to the two third magnets 221c located at two ends and have the same magnetizing direction along the second direction, where the driving coil 522 is one, the driving coil 522 has two connecting sides 5221 oppositely disposed, and along the second direction, each connecting side 5221 is located between the oppositely disposed third magnets 221c and the sixth magnets 32.

For example, the second halbach array 2b includes three third magnets 221c, and the third halbach array 3a includes two sixth magnets 32, wherein the third magnets 221c located at the intermediate positions are magnetized from right to left in the horizontal x direction, the third magnets 221c located at the left sides of the third magnets 221c located at the intermediate positions are magnetized from top to bottom in the vertical z direction, and the third magnets 221c located at the right sides of the third magnets 221c located at the intermediate positions are magnetized from bottom to top in the vertical z direction. The sixth magnet 32 located on the left side is magnetized from top to bottom in the vertical z direction, and the sixth magnet 32 located on the right side is magnetized from bottom to top in the vertical z direction. Thus, by the above-described design, the second magnetic circuit 43 can further enhance the magnetic field intensity acting on the driving coil 522, and the two sixth magnets 32 are provided corresponding to the two third magnets 221c located at both ends and form a magnetic induction line circuit acting on the driving coil 522, so that the vibration effect of the second vibration system 5 can be enhanced.

As shown in fig. 1-2 and fig. 5-6, according to some embodiments of the present invention, the magnetic yoke 21 includes a main body 211 and a hollow hole 21a provided in the main body 211, the side magnetic portion 23 and the first sub-center magnet 221 located at two end positions are both provided in the main body 211, and along the second direction, the hollow hole 21a is at least partially opposite to the driving coil 522; or the central magnetic part 22 further comprises second sub-central magnets 222 arranged at two ends of the plurality of first sub-central magnets 221 in the third direction, the side magnetic part 23 and the second sub-central magnets 222 are arranged on the main body part 211, and the hollowed-out holes 21a and the driving coils 522 are at least partially arranged opposite to each other along the second direction. By providing the hollowed holes 21a on the body portion 211, the hollowed holes 21a may be opposite to a part of the driving coil 522 or may be opposite to the whole driving coil 522, thereby ensuring that the driving coil 522 can smoothly cut the magnetic induction lines, and thus ensuring the vibration effect of the second vibration system 5.

In a specific example of the present invention, the first magnetic circuit 2 includes a magnetic yoke 21, a central magnetic portion 22 and a side magnetic portion 23 provided on the magnetic yoke 21, the side magnetic portion 23 being provided on the outer side of the central magnetic portion 22 and spaced apart from the central magnetic portion 22 to form a magnetic gap, the side magnetic portion 23 including a side magnet 231 provided on the magnetic yoke 21 and a side magnetic conductive plate 232 provided on a side of the side magnet 231 away from the magnetic yoke 21, the central magnetic portion 22 including a central magnet provided on the magnetic yoke 21 and a central magnetic conductive plate 223 provided on a side of the central magnet away from the magnetic yoke 21. The center magnet includes a plurality of first sub-center magnets 221 disposed at intervals along the first direction, and second sub-center magnets 222 disposed at both ends of the first sub-center magnets 221 in the third direction, and one side of each of the first sub-center magnets 221 and the second sub-center magnets 222, which is far from the magnetic yoke 21, is connected to a center magnetic conductive plate 223. The magnetic yoke 21 includes a main body 211 and a hollow hole 21a provided in the main body 211, the side magnetic portion 23 and the second sub-center magnet 222 are provided in the main body 211, and the plurality of first sub-center magnets 221 are opposite to the driving coil 522 through the hollow hole 21 a.

As shown in fig. 1 and 5, according to some embodiments of the present invention, the housing 1 may include a main body 11 and a bending portion 12 provided at an outer circumference of the main body 11, the bending portion 12 is bent and extended toward a direction approaching the first vibration system 4 with respect to the main body 11, one end of the elastic connection member 51 is fixed to the bending portion 12, a support block (not shown) is provided on the main body 11, and the magnetic yoke 21 is supportively fixed to the support block, so that the sound generating unit composed of the first vibration system 4 and the first magnetic circuit system 2 may be fixedly supported to the housing 1 through the support block.

In some embodiments of the present invention, the outer peripheral side of the magnetic yoke 21 is provided with a positioning groove 21b, the bending part 12 is provided with a positioning protrusion corresponding to the positioning groove 21b, and the positioning protrusion is inserted into the corresponding positioning groove 21b, so that the magnetic yoke 21 realizes the positioning of the magnetic yoke 21 in the horizontal x direction and the horizontal y direction through the cooperation of the positioning groove 21b and the positioning protrusion, and the magnetic yoke 21 can realize the positioning of the magnetic yoke 21 in the vertical z direction through the supporting block, thereby realizing the accurate positioning of the sounding unit. One end of the elastic connection member 51 is connected to the bending portion 12, the other end of the elastic connection member 51 is connected to the vibrator assembly 52, and the vibrator assembly 52 may include a weight 521 and a driving coil 522 provided to the weight 521, whereby the motor unit is suspended in the installation space 1 a. The second vibration system 5 further includes a motor support 53, one end of the motor support 53 is electrically connected to the driving coil 522, and the other end of the motor support 53 is connected to an external circuit member.

In a specific example of the present invention, the counterweight 521 is provided with an assembly groove 521a at a side close to the first magnetic circuit 2, and the driving coil 522 is embedded in the assembly groove 521a, so that the vibrator assembly 52 can be more compact. Alternatively, a fixing glue may be provided in the fitting groove 521a, and the driving coil 522 may be fixed in the fitting groove 521a by the fixing glue. It should be noted that the structural design of the weight 521 is not limited thereto. For example, the weight 521 may not be provided with the fitting groove 521a, and the driving coil 522 may be bonded to the outer surface of the weight 521.

In some embodiments of the present invention, the bending portion 12 is disposed flush with the peripheral wall of the first magnetic circuit system 2, so that the entire structure of the vibration sound generating device 100 can be more compact, and the occupied assembly space is less.

An electronic apparatus according to an embodiment of the second aspect of the present invention includes the vibration sound emitting device 100 according to the above-described embodiment of the present invention. Alternatively, the electronic device may be a mobile phone, PAD, notebook computer, or the like.

According to the electronic device of the second aspect of the present invention, by arranging the vibration sounding device 100, the structural design of the vibration sounding device 100 is compact, the occupied assembly space is small, and the sound effect and the vibration effect are good, so that the design requirement of the electronic device for lightening and thinning can be met, the electronic device can also have good sound quality and vibration feedback effect, and the market competitiveness of the electronic device product is improved.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A vibration sound producing apparatus, comprising:

The shell is made of a metal material piece or a metal and plastic composite material piece, and an installation space is defined in the shell;

The first magnetic circuit system comprises a magnetic yoke, a central magnetic part and a side magnetic part, wherein the central magnetic part and the side magnetic part are arranged on the magnetic yoke, the magnetic yoke is connected with the shell, the side magnetic part is arranged on the outer side of the central magnetic part and is spaced from the central magnetic part to define a magnetic gap, the central magnetic part comprises a plurality of first sub-central magnets which are distributed at intervals along a first direction, and the side magnetic part comprises side magnets;

The first vibration system vibrates along a second direction perpendicular to the first direction, the first vibration system and the second vibration system are respectively arranged on two opposite sides of the first magnetic circuit system along the second direction, the first vibration system comprises a vibrating diaphragm assembly and a voice coil, one end of the voice coil is connected with the vibrating diaphragm assembly, and the other end of the voice coil is correspondingly arranged with the magnetic gap; the second vibration system is arranged in the installation space and vibrates along the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, two ends of the elastic connecting piece are respectively connected with the vibrator assembly and the inner wall of the shell, the vibrator assembly comprises a driving coil, and the driving coil and the central magnetic part are oppositely arranged along the second direction;

At least part of the first sub-center magnets form a halbach array, and magnetizing directions of the first sub-center magnets positioned at two ends of the center magnetic part along the first direction are opposite to magnetizing directions of the side magnets.

2. The vibration and sound device according to claim 1, wherein the number of the first sub-center magnets is five, and the five first sub-center magnets together form a first halbach array, and the magnetic field enhancing side of the first halbach array is located on the side of the central magnetic portion facing the driving coil.

3. The vibration and sound device according to claim 2, wherein the plurality of first sub-center magnets include a first magnet magnetized in the first direction and a second magnet magnetized in the second direction, the first halbach array includes two first magnets and three second magnets, the three second magnets are spaced apart in the first direction and the second magnets located at intermediate positions are opposite to the second magnets located at both ends, the magnetizing directions of the two first magnets are opposite, and the second magnets having opposite magnetizing directions are provided at both sides of each of the first magnets.

4. The vibration and sound device according to claim 3, wherein the driving coils are two, the two driving coils are disposed opposite to the two first magnets, wherein each driving coil includes two connecting sides disposed opposite to each other, and the two connecting sides are disposed opposite to the second magnets on both sides of the corresponding first magnets along the second direction.

5. The vibration and sound device according to claim 1, wherein the center magnetic portion further includes second sub-center magnets provided at both ends of a third direction of the plurality of first sub-center magnets, the third direction being perpendicular to the first direction and the second direction, respectively, and both ends of the second sub-center magnets being flush with both ends of the plurality of first sub-center magnets along the first direction.

6. The vibration/sound production device according to claim 1, wherein the plurality of first sub-center magnets include a plurality of third magnets positioned at intermediate positions and two fourth magnets provided on both sides of the plurality of third magnets, the plurality of third magnets constitute a second halbach array, a magnetic field reinforcing side of the second halbach array is positioned on a side of the center magnetic portion facing the driving coil, and magnetizing directions of the two fourth magnets are the same and opposite to magnetizing directions of the side magnets.

7. The vibration and sound generation device according to claim 6, further comprising a second magnetic circuit system, wherein the second magnetic circuit system is disposed on a side of the driving coil facing away from the first magnetic circuit system, the second magnetic circuit system is provided with a plurality of fifth magnets forming a third halbach array, and a magnetic field reinforcing side of the third halbach array is disposed on a side of the second magnetic circuit system facing the driving coil.

8. The vibration/sound device according to claim 7, wherein the third magnet in the middle position of the second halbach array and the fifth magnet in the middle position of the third halbach array are magnetized in the first direction in opposite directions, and the third magnets at both ends of the second halbach array and the fifth magnets at both ends of the corresponding third halbach array are magnetized in the same direction;

and/or the number of magnets in the second halbach array is the same as the number of magnets in the third halbach array.

9. The vibration and sound device according to claim 6, wherein said second halbach array includes three of said third magnets, said third magnet located at a center position being magnetized in said first direction, two of said third magnets located at both ends being magnetized in said second direction and the directions of magnetization being opposite; the vibration sounding device further comprises a second magnetic circuit system, the second magnetic circuit system is arranged on one side, opposite to the first magnetic circuit system, of the driving coil, the second magnetic circuit system comprises two sixth magnets which are magnetized along the second direction and have opposite magnetizing directions, and the two sixth magnets are opposite to the two third magnets at the positions of the two ends one by one along the second direction and have the same magnetizing directions;

the driving coil is provided with two connecting edges which are oppositely arranged, and each connecting edge is positioned between the third magnet and the sixth magnet which are oppositely arranged along the second direction.

10. The vibration and sound device according to any one of claims 1 to 9, wherein the magnetically conductive yoke includes a body portion and a hollowed-out hole provided in the body portion,

The side magnetic parts and the first sub-center magnets positioned at the two ends are both arranged on the body part, and the hollowed holes and the driving coils are at least partially arranged opposite to each other along the second direction;

Or, the central magnetic part further comprises second sub-center magnets arranged at two ends of the first sub-center magnets in the third direction, the side magnetic part and the second sub-center magnets are arranged on the body part, and the hollowed holes and the driving coils are at least partially arranged opposite to each other along the second direction.

11. The vibration/sound production device according to any one of claims 1 to 9, wherein the housing includes a main body portion and a bending portion provided on an outer periphery of the main body portion, the bending portion is bent and extended toward a direction approaching the first vibration system with respect to the main body portion, one end of the elastic connecting member is fixed to the bending portion, a support block is provided on the main body portion, and the magnetically conductive yoke is supported and fixed to the support block.

12. The vibration and sound production device according to claim 11, wherein a positioning groove is formed on the outer peripheral side of the magnetic conductive yoke, a positioning protrusion corresponding to the positioning groove is formed on the bending part, and the positioning protrusion is inserted into the corresponding positioning groove;

And/or the bending part is flush with the peripheral wall of the first magnetic circuit system.

13. An electronic device comprising the vibration sound-emitting device according to any one of claims 1 to 12.