CN112019983B

CN112019983B - Sound generating device and wearable equipment

Info

Publication number: CN112019983B
Application number: CN202011125484.4A
Authority: CN
Inventors: 蔡晓东; 刘松; 田烨; 刘春发
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-02-05
Anticipated expiration: 2040-10-20
Also published as: CN112019983A

Abstract

The invention discloses a sound generating device and wearable equipment, wherein the sound generating device comprises a shell, and a vibration system, an auxiliary system and a magnetic circuit system which are contained in the shell; the vibration system comprises a vibrating diaphragm and a driving assembly connected with the vibrating diaphragm, and the driving assembly comprises a flat voice coil; the auxiliary system comprises a first centering support, and two ends of the first centering support are respectively fixed with the shell and the driving assembly; the magnetic circuit system comprises a magnet assembly and a magnetic conduction assembly arranged on the magnet assembly, the magnet assembly comprises an upper magnet unit and a lower magnet unit, the magnetic conduction assembly comprises a first magnetic conduction plate and a second magnetic conduction plate which are respectively arranged corresponding to the long axis of the voice coil, the first magnetic conduction plate is positioned between the upper magnet unit and the lower magnet unit, and the second magnetic conduction plate is positioned at one end of the upper magnet unit, which is far away from the first magnetic conduction plate; the light and attractive appearance of the glasses legs can be guaranteed, the inner space of the glasses legs can be fully utilized, and polarization can be prevented from occurring in the vibration process of the voice coil.

Description

Sound generating device and wearable equipment

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sounding device and wearable equipment.

Background

With the rapid development of the consumer electronics industry, various intelligent wearable terminals are also in strong demand, for example, smart glasses have many entertainment functions in addition to the functions of the traditional glasses. For example, the smart glasses can be internally provided with a bluetooth system to realize the function of a bluetooth headset, and can be connected with a mobile phone for use, and the smart glasses are used for answering a call or playing music stored in the mobile phone. In modern speaker technology, the acoustic performance of a moving-coil speaker is directly related to the size of the moving-coil speaker, the larger the size is, the better the acoustic effect is relatively, and the smaller the size is, the poorer the acoustic effect is relatively. In consideration of portability, comfort and aesthetic property, the wearable intelligent terminal has strict requirements on size, and the size and the thickness of the wearable intelligent terminal tend to be miniaturized more and more. Therefore, after removing various main components such as a chip, a battery, and a main board, a space for a built-in speaker is small, and the performance of the speaker is hardly improved. Especially in intelligent glasses, generally adopt circular speaker side direction sound, circular speaker can not fine matching glasses leg outward appearance shape, leads to complete machine glasses leg appearance too wide big, takes place polarization to influence the acoustic performance of speaker when the voice coil loudspeaker voice coil vibrates moreover easily.

Disclosure of Invention

The invention mainly aims to provide a sound generating device and wearable equipment, and aims to solve the technical problems that the wearable equipment is too wide in appearance after a sound generating device is assembled, and the acoustic performance of a loudspeaker is influenced by the fact that the voice coil is easy to generate polarization during vibration.

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

a housing;

the vibration system is accommodated in the shell and comprises a vibrating diaphragm and a driving assembly connected with the vibrating diaphragm, and the driving assembly comprises a flat voice coil;

the auxiliary system is accommodated in the shell and comprises a first centering support, and two ends of the first centering support are respectively fixed with the shell and the driving assembly;

magnetic circuit, accept in the accommodating space, magnetic circuit include the magnet subassembly with set up in magnetic conduction subassembly on the magnet subassembly, magnetic circuit is formed with the confession the voice coil loudspeaker voice coil male magnetic gap, the magnetization direction of magnet subassembly with the vibration direction of voice coil loudspeaker voice coil all with sound generating mechanism's vertical direction is parallel, the magnet subassembly includes magnet unit and lower magnet unit, the magnetic conduction subassembly include respectively with the major axis of voice coil loudspeaker voice coil corresponds first magnetic conduction board and the second magnetic conduction board that sets up, first magnetic conduction board be located go up the magnet unit with between the magnet unit down, the second magnetic conduction board is located go up the magnet unit and keep away from the one end of first magnetic conduction board.

Preferably, the sound generating device is a cuboid, and the length of the sound generating device is 18-30 mm.

Preferably, the driving assembly further includes a support for fixing the voice coil to the diaphragm, the auxiliary system further includes a second centering branch plate located at the same side and spaced from the first centering branch plate, one end of the second centering branch plate is fixed to the bottom end of the support, and the other end of the second centering branch plate is fixed to the housing.

Preferably, the support includes the connecting rod and certainly the connecting rod to the curb plate of the direction bending of voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil with the curb plate is fixed, the connecting rod respectively with the vibrating diaphragm, first centering piece and second centering piece are fixed.

Preferably, the connecting rod is provided with a step surface extending towards the voice coil direction, the first centering branch piece is fixed on the step surface, the upper end surface of the connecting rod is fixed with the vibrating diaphragm, and the lower end surface of the connecting rod is fixed with the second centering branch piece.

Preferably, the auxiliary system is provided with two symmetrical first centering branches and two symmetrical second centering branches along the long axis direction of the voice coil.

Preferably, the first stiffener or the second stiffener is provided with a first pad electrically connected to the voice coil.

Preferably, the sounding device is cuboid, and the ratio of the length to the width of the sounding device is 4: 1-5: 1.

In addition, the invention also provides intelligent glasses, which comprise glasses legs and the sound generating device, wherein the glasses legs comprise a shell, the sound generating device is positioned in the shell, the shell is provided with sound outlet holes, and a sound outlet channel is formed between the vibrating diaphragm and the sound outlet holes.

Preferably, the diaphragm is disposed facing the sound outlet hole.

In the technical scheme of the invention, the vibration system, the magnetic circuit system and the auxiliary system are respectively accommodated in the shell, the vibration system comprises a vibrating diaphragm and a driving assembly connected with the vibrating diaphragm, the driving assembly comprises a flat voice coil, the magnetic circuit system comprises a magnet assembly, the voice coil is inserted into a magnetic gap formed by the magnetic circuit system and can vibrate in the magnetic gap, and the magnet assembly comprises an upper magnet unit and a lower magnet unit, so that the magnetic field intensity is increased, and more vibration spaces are provided for the voice coil. Because the voice coil loudspeaker voice coil is the platykurtic, and the vibration direction of voice coil loudspeaker voice coil, magnet assembly's magnetization direction is parallel with sound generating mechanism's vertical direction, the magnetism conduction subassembly includes first magnetic conduction board and the second magnetic conduction board that corresponds the setting with the major axis of voice coil loudspeaker voice coil respectively, first magnetic conduction board is located magnet unit and down between the magnet unit, the one end that first magnetic conduction board was kept away from to the second magnetic conduction board is located magnet unit, the magnetic flux of voice coil loudspeaker voice coil major axis has been increased, and can reduce sound generating mechanism's width, make sound generating mechanism narrow long type, the design shape of the wearable equipment of shape that covers that can be fine, can guarantee the light of wearable equipment beautifully can. The auxiliary system comprises a first centering support, and two ends of the first centering support are fixed with the shell and the driving assembly respectively, so that polarization can be prevented from occurring in the voice coil vibration process, and the acoustic performance of the sound generating device is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of glasses legs of smart glasses according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the temple of the smart eyewear in accordance with one embodiment of the present invention;

FIG. 3 is a top view of a sound generator according to an embodiment of the present invention;

FIG. 4 is an exploded view of a sound generator in accordance with an embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a sound generator of an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a voice coil of a sound generating device according to an embodiment of the present invention;

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

FIG. 8 is a cross-sectional view of an alternative angle of a sound generator in accordance with an embodiment of the present invention;

FIG. 9 is an enlarged view taken at A in FIG. 8;

FIG. 10 is a partial schematic view of FIG. 4;

FIG. 11 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;

fig. 12 is a schematic structural view of another angle of the sound generating device according to an embodiment of the present invention;

fig. 13 is a bottom view of the sound generator according to the embodiment of the present invention.

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Sound producing device	20	Shell body
30	Vibration system	31	Vibrating diaphragm
				32	Drive assembly	321	Voice coil
40	Magnetic circuit system	41	Magnet assembly
				42	Magnetic conduction assembly	411	Magnetic gap
50	Glasses legs	51	Outer casing
				43	Magnetic yoke	412	Upper magnet unit
413	Lower magnet unit	421	Second magnetic conduction plate
				322	Long shaft	323	Short shaft
4121	A first upper magnet	4122	First lower magnet
				4131	Second upper magnet	4132	Second lower magnet
422	First magnetic conduction plate	21	Shell body
				22	Fixing plate assembly	221	First fixing plate
222	Second fixing plate	211	Fixing hole
				212	Upper casing	213	Lower casing
2131	Long plate	2132	Short plate
				223	Plate body	224	Bump
214	Clamping groove	324	Support frame
				311	Ball top piece	312	Folding ring piece
3121	Mounting part	3122	Deformation part
				3123	Fixing part	3124	First stage
3125	Second section	215	Convex plate
				60	Auxiliary system	61	First centering support
62	Second centering support plate	3241	Connecting rod
				3242	Side plate	3243	First transverse plate
3244	First connecting plate	3245	Second transverse plate
				3246	Second connecting plate	3247	Third transverse board
3248	Step surface	611	First end
				612	A first elastic part	613	Second end
621	Third terminal	622	Second elastic part
				623	Fourth terminal	2133	Containing groove
624	First bonding pad	625	Second bonding pad
				431	Avoiding hole	432	Base plate
433	Vertical plate	434	Assembly plate
				435	Mounting hole	511	Sound outlet
512	Sound channel

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The references to "vertical" and "lateral" in the present invention are based on the orientations shown in fig. 5 and 7, and are used only to explain the relative positional relationship between the respective components in the postures shown in fig. 5 and 7, and if the specific posture is changed, the directional indication is changed accordingly.

As shown in fig. 1 to 5, the present invention provides a sound generating apparatus 10, where the sound generating apparatus 10 is applied to a wearable device, the sound generating apparatus 10 includes a housing 20 forming an accommodating space, a vibration system 30 and a magnetic circuit system 40 are both accommodated in the accommodating space, the vibration system 30 includes a diaphragm 31 and a driving assembly 32 connected to the diaphragm 31, and the driving assembly 32 includes a flat voice coil 321; magnetic circuit 40 includes magnet assembly 41 and sets up the magnetic conduction subassembly 42 on magnet assembly 41, magnetic circuit 40 is formed with the magnetic gap 411 that supplies voice coil 321 to insert, the magnetization direction of magnet assembly 41 and the vibration direction of voice coil 321 are all parallel with sound generating mechanism 10's vertical direction, magnet assembly 41 includes magnet unit 412 and lower magnet unit 413, magnetic conduction subassembly 42 includes first magnetic conduction board 422 and the second magnetic conduction board 421 that corresponds the setting with the major axis 322 of voice coil 321 respectively, first magnetic conduction board 422 is located between magnet unit 412 and the lower magnet unit 413, second magnetic conduction board 421 is located the one end that first magnetic conduction board 422 was kept away from to upper magnet unit 412.

It should be noted that the sound generating device 10 is particularly suitable for being used as a sound generating device of smart glasses, but is not limited to being used as a sound generating device of smart glasses, and if other devices are applied to the sound generating device 10 provided by the present invention, the sound generating device 10 also falls within the protection scope of the present invention. The flat voice coil 321 can vibrate in the magnetic gap 411 in the vertical direction of the sound generating device 10, and under the action of the magnetic field generated by the magnetic circuit system 40, the voice coil 321 vibrates after being electrified, so as to drive the diaphragm 31 to vibrate and generate sound. The magnet assembly 41 includes an upper magnet unit 412 and a lower magnet unit 413, which increases the magnetic field strength and provides more vibration space for the voice coil 321. Because the voice coil 321 is flat, and the axial direction of the voice coil 321 winding is perpendicular to the vertical direction of the sound generating device 10, the width of the sound generating device 10 is reduced, and the voice coil can be matched with the appearance of the glasses legs 50. And the magnetization direction of magnet subassembly 41 is parallel with sound generating mechanism 10's vertical direction, and first magnetic conduction board 422 and second magnetic conduction board 421 correspond the setting with the major axis 322 of voice coil 321 respectively, first magnetic conduction board 422 is located between magnet unit 412 and the lower magnet unit 413, second magnetic conduction board 421 is located the one end that first magnetic conduction board 422 was kept away from to magnet unit 412, the magnetic flux of voice coil 321 major axis 322 has not only been increased, and reduce sound generating mechanism 10's width, can guarantee that the light of glasses leg 50 is pleasing to the eye can make full use of glasses leg 50 inner space again, can promote sound generating mechanism 10's performance again.

As shown in fig. 3, the sound generating device 10 of the present embodiment is a rectangular parallelepiped, the ratio of the length L1 to the width L2 of the sound generating device 10 is 4:1 to 5:1, the length L1 of the sound generating device 10 is 18 to 30 mm, and the shape of the glasses legs 50 can be well covered by a long and thin design with a high aspect ratio.

The magnetic circuit system 40 further includes a yoke 43 coupled to the housing 20, the magnet assembly 41 is fixed to the yoke 43, and the yoke 43 itself does not generate a magnetic field, which can restrain leakage flux and prevent the magnetic field from being diffused outward. During installation, the magnet assembly 41 is fixed to the magnetic yoke 43, the shell 20 is fixed to the magnetic yoke 43, and the driving assembly 32 and the diaphragm 31 are assembled, so that the structure is simple and the assembly efficiency is high.

The magnet assembly 41 includes an upper magnet unit 412 and a lower magnet unit 413 disposed at an interval, the lower magnet unit 413 is fixed to the yoke 43, the upper magnet unit 412 and the lower magnet unit 413 are respectively parallel to the long axis 322 of the voice coil 321, and the first magnetic conductive plate 422 and the second magnetic conductive plate 421 also respectively extend along the long axis 322 of the voice coil 321 to increase the magnetic flux of the long axis 322 of the voice coil 321.

As shown in fig. 5 to 7, the upper magnet unit 412 includes a first upper magnet 4121 and a second upper magnet 4131 spaced apart in a lateral direction of the sound generating device 10, and the lower magnet unit 413 includes a first lower magnet 4122 and a second lower magnet 4132 spaced apart in the lateral direction; the first lower magnet 4122 and the second lower magnet 4132 are disposed on the yoke 43 at intervals in the transverse direction, and the first upper magnet 4121 and the second upper magnet 4131 are arranged at intervals in the transverse direction and are respectively provided with a second magnetic conductive plate 421. The polarities of the first upper magnet 4121 and the second upper magnet 4131 are opposite to each other, the polarities of the first lower magnet 4122 and the second lower magnet 4132 are opposite to each other, and the polarities of the first upper magnet 4121 and the first lower magnet 4122 and the polarities of the second upper magnet 4131 and the second lower magnet 4132 are also opposite to each other. The magnetic flux at the long axis 322 of the upper end of the voice coil 321 mainly comes from the first upper magnet 4121 and the second upper magnet 4131 which are oppositely arranged, the magnetic flux at the long axis 322 of the lower end of the voice coil 321 mainly comes from the first upper magnet 4121 and the second upper magnet 4131 which are oppositely arranged, and the first lower magnet 4122 and the second lower magnet 4132 which are oppositely arranged, so that the voice coil 321 passes through enough magnetic flux when vibrating in the vertical direction, and the acoustic performance of the sound generating device 10 is improved. The magnetic conducting component 42 further includes two first magnetic conducting plates 422 arranged at intervals along the transverse direction, one of the first magnetic conducting plates 422 is fixed between the first upper magnet 4121 and the first lower magnet 4122, the other first magnetic conducting plate 422 is fixed between the second upper magnet 4131 and the second lower magnet 4132, the first magnetic conducting plate 422 can increase the magnetic flux at the position of the long axis 322 at the lower end of the voice coil 321, and the acoustic performance of the sound generating device 10 is further improved. The first magnetic plate 422 also extends along the long axis 322 of the voice coil 321 to increase the magnetic flux of the long axis 322 of the voice coil 321. When the magnet yoke is fixedly installed, the first lower magnet 4122 and the second lower magnet 4132 may be respectively adhered to the magnet yoke 43, the first magnetic conductive plate 422 may be adhered to the upper end surfaces of the first lower magnet 4122 and the second lower magnet 4132, the first upper magnet 4121 and the second upper magnet 4131 may be respectively adhered to the upper end surface of the first magnetic conductive plate 422, and finally the two second magnetic conductive plates 421 may be respectively adhered to the upper end surfaces of the first upper magnet 4121 and the second upper magnet 4131.

As shown in fig. 4, 7 and 11, the housing 20 includes a housing body 21 and a fixing plate assembly 22, the housing body 21 is provided with a fixing hole 211, the fixing plate assembly 22 is clamped in the fixing hole 211, and the magnet assembly 41 and/or the magnetic conductive assembly 42 are fixed to the fixing plate assembly 22. During assembly, glue can be dispensed on the inner side of the fixing plate assembly 22, and then the fixing plate assembly 22 is clamped in the fixing hole 211, so that the inner side of the fixing plate assembly 22 is bonded to the side surface of the magnet assembly 41 and/or the magnetic conducting assembly 42, and the reliability and stability of the magnetic circuit system 40 are enhanced.

Specifically, the fixing hole 211 and the magnet assembly 41 both extend along the long axis 322 direction of the voice coil 321, and the fixing hole 211 may be a long-strip-shaped hole formed in the side surface of the casing body 21, so as to increase the magnetic flux of the long axis 322 of the voice coil 321 and further improve the structural stability of the magnetic circuit system 40.

The fixing plate assembly 22 includes a first fixing plate 221 and a second fixing plate 222, one side of the magnet assembly 41 is fixedly bonded to the first fixing plate 221, and the other side of the magnet assembly 41 is fixedly bonded to the second fixing plate 222. That is, the two long sides of the housing body 21 are respectively provided with the symmetrical fixing holes 211, and the first fixing plate 221 and the second fixing plate 222 both extend along the length direction of the housing body 21, so that the stability of the magnet assembly 41 can be improved.

As shown in fig. 7, the first fixing plate 221 is fixed to the first upper magnet 4121 and the first lower magnet 4122 by adhesion, and the second fixing plate 222 is fixed to the second upper magnet 4131 and the second lower magnet 4132 by adhesion. That is, the inner side of the first fixing plate 221 is bonded and fixed to the partial side surface of the first upper magnet 4121 and the partial side surface of the first lower magnet 4122, and the inner side of the second fixing plate 222 is bonded and fixed to the partial side surface of the second upper magnet 4131 and the partial side surface of the second lower magnet 4132, respectively, so that the stability of the magnet assembly 41 can be improved while ensuring a sufficient magnetic flux in the voice coil 321.

As shown in fig. 11 and 12, the housing body 21 includes a lower case 213 and an upper case 212 covering the lower case 213, the lower case 213 is fixed to the yoke 43, the lower case 213 includes two long plates 2131 and two short plates 2132, the long plates 2131 and the short plates 2132 are connected, and the first fixing plate 221 and the second fixing plate 222 are respectively engaged with the fixing holes 211 of the long plates 2131 and the second long plates 2131. The inner side of one of the long plates 2131 abuts against the first upper magnet 4121 and the first lower magnet 4122, and is bonded to the first upper magnet 4121 and the first lower magnet 4122 by the first fixing plate 221; similarly, the magnet assembly 41 can be firmly attached to the housing 20 by abutting the inner side of the other long plate 2131 against the second upper magnet 4131 and the second lower magnet 4132, respectively, and bonding the inner side to the second upper magnet 4131 and the second lower magnet 4132, respectively, via the second fixing plate 222.

More preferably, one of the first magnetic conduction plates 422 is fixedly bonded to the first fixing plate 221, and the other first magnetic conduction plate 422 is fixedly bonded to the second fixing plate 222, so that not only can the magnetic flux of the voice coil 321 be increased, but also the connection stability of the magnet assembly 41 and the magnetic conduction assembly 42 in the vertical direction can be improved.

The first fixing plate 221 and/or the second fixing plate 222 include a plate body 223 and a protrusion 224 protruding from the plate body 223, the housing body 21 is formed with a slot 214 along the edge of the fixing hole 211, and the protrusion 224 is clamped in the slot 214. When the first fixing plate 221 and/or the second fixing plate 222 are assembled, the protrusion 224 is inserted into the slot 214, so that the assembly is convenient and the structure is stable. Two protrusions 224 may be disposed on the long side and one protrusion 224 may be disposed on the short side of the first fixing plate 221 and/or the second fixing plate 222, so as to increase the firmness between the first fixing plate 221 and/or the second fixing plate 222 and the housing 20.

As shown in fig. 7 and 8, the driving assembly 32 further includes a support 324 for fixing the voice coil 321 to the diaphragm 31, the diaphragm 31 includes a dome 311 and a corrugated rim 312 connected to the casing 20 and the dome 311, the dome 311 is connected to the support 324, and the corrugated rim 312 is disposed along a vertical direction of the sound generating device 10, so as to increase a vibration area of the dome 311, improve an acoustic performance of the sound generating device 10, and reduce a width of the sound generating device 10 to match an outer shape of the glasses leg 50.

As shown in fig. 9, the ring folding member 312 includes an installation portion 3121, a deformation portion 3122, and a fixing portion 3123, which are connected in sequence, the installation portion 3121 is fixed to the dome 311, the deformation portion 3122 extends along the vertical direction, the fixing portion 3123 is connected to the housing 20, the ring folding member 312 has an annular structure, the deformation portion 3122 can deform in the vertical direction, the installation portion 3121 fixes the dome, and the fixing portion 3123 fixes the housing 20, which can reduce the width of the sound generating apparatus 10 and stably install the diaphragm 31 on the housing 20.

Preferably, the edge of the mounting portion 3121 close to the housing 20 is flush with the edge of the fixing portion 3123 close to the housing 20, that is, the outer edge of the mounting portion 3121 and the outer edge of the fixing portion 3123 are located on the same plane, and on the premise that the diaphragm 31 is stably assembled on the housing 20, it can be ensured that the overall width of the loop element 312 in the transverse direction of the sound generating apparatus 10 is not too wide, and the width of the sound generating apparatus 10 is further reduced.

The deformable portion 3122 includes a first section 3124 and a second section 3125, the first section 3124 is bent from the mounting portion 3121 toward the housing 20, the second section 3125 is bent from the first section 3124 toward a direction away from the housing 20, and the second section 3125 is connected to the fixing portion 3123. The deformation portion 3122 of the present embodiment is formed by connecting two sections of portions with curved cross sections, which improves more vibration space for the top of the ball and improves the acoustic performance of the sound generating device 10. Of course, in other embodiments, the deformation portions 3122 may be connected by more curved portions, and the bending directions of the first segment 3124 and the second segment 3125 may be changed as long as the deformation space is formed.

As shown in fig. 7 to 9, the housing 20 includes a housing body 21 and a protruding plate 215 bent from the housing body 21 toward the accommodating space, the bottom end surface of the fixing portion 3123 is bonded and fixed to the protruding plate 215, and the top end surface of the mounting portion 3121 of the corrugated rim piece 312 is bonded and fixed to the dome piece 311. The convex plate 215 extends from the bottom end of the upper shell 212 to the accommodating space, the convex plate 215 is a rectangular annular plate, when the diaphragm 31 is installed, only the fixing portion 3123 of the corrugated ring piece 312 needs to be bonded to the convex plate 215, and then the spherical top piece 311 is bonded to the top end surface of the installation portion 3121, the outer edge of the installation portion 3121 is flush with the outer edge of the spherical top piece 311, the housing 20 and the diaphragm 31 of the embodiment are simple to assemble, the structure is stable, and the width of the sound generating device 10 cannot be increased.

As shown in fig. 4 and 8, the sound generating device 10 of the present embodiment further includes an auxiliary system 60 accommodated in the accommodating space, the auxiliary system 60 includes a first centering sheet 61, two ends of the first centering sheet 61 are respectively fixed to the support 324, so as to prevent polarization from occurring during vibration of the voice coil 321 and the support 324, and improve acoustic performance of the sound generating device 10.

The auxiliary system 60 further includes a second stiffener 62 located on the same side as the first stiffener 61 and spaced apart from the first stiffener 62, one end of the second stiffener 62 is fixed to the bottom end of the bracket 324, and the other end of the second stiffener 62 is fixed to the housing 20. The first and

second spacers

61 and 62 are fixed to the upper and lower portions of the support 324, respectively, so that the poor acoustic performance caused by polarization occurring during vibration of the voice coil 321 and the support 324 can be effectively prevented.

Further, the number of the first centering branch 61 and the second centering branch 62 is two, the two first centering branches 61 are respectively and symmetrically arranged on the upper portion of the support 324 along the direction of the long axis 322 of the voice coil 321, the two second centering branches 62 are respectively and symmetrically arranged on the lower portion of the support 324 along the direction of the long axis 322 of the voice coil 321, and due to the flat shape of the voice coil 321, the two first centering branches 61 and the two second centering branches 62 are respectively and symmetrically arranged on two sides of the long axis 322 of the voice coil 321, so that the process is simpler and more convenient, and polarization in the vibration process of the voice coil 321 and the support 324 can be more effectively prevented.

As shown in fig. 8 to 10, the number of the brackets 324 is also two, the two brackets 324 are respectively symmetrically arranged along the long axis 322 direction of the voice coil 321, each bracket 324 includes a connecting rod 3241 and a side plate 3242 bent from the connecting rod 3241 to the voice coil 321, the voice coil 321 is fixed to the side plate 3242, and the connecting rod 3241 is fixed to the diaphragm 31, the first stiffener 61, and the second stiffener 62. The two short shafts 323 of the voice coil 321 are respectively adhered to the side plates 3242, so that the assembly is simple, the space is saved, and the width of the sound generating device 10 is not increased to adapt to the appearance of the glasses legs 50.

The top end of the bracket 324 is fixed to the ball top 311, the bottom end of the bracket 324 is fixed to the second centralizer sheet 62, and the first centralizer sheet 61 is fixed to the bracket 324 near the top end. The connecting rod 3241 has a stepped surface 3248 extending in the direction of the voice coil 321, the first centering leg 61 is fixed to the stepped surface 3248, the upper end surface of the connecting rod 3241 is fixed to the diaphragm 31, and the lower end surface of the connecting rod 3241 is fixed to the second centering leg 62. Specifically, the connecting rod 3241 includes a first transverse plate 3243, a first connecting plate 3244, a second transverse plate 3245, a second connecting plate 3246 and a third transverse plate 3247, which are connected in sequence, an upper end surface of the first transverse plate 3243 is adhered to a lower end of the globtop 311, the first connecting plate 3244 extends downward from the first transverse plate 3243, the second transverse plate 3245 is bent from the first connecting plate 3244 toward the housing 20, the second transverse plate 3245 forms the step surface 3248, the first centering tab 61 is adhered to the step surface 3248 of the second transverse plate 3245, the second connecting plate 3246 extends downward from the second transverse plate 3245, the side plate 3242 is connected to the second connecting plate 3246, the short shaft 323 of the voice coil 321 is adhered to a side surface of the side plate 3242, the third transverse plate 3247 is preferably bent from the second connecting plate 3246 toward the voice coil 321, which can save space, reduce the width of the sound emitting device 10, and the second centering tab 62 is adhered to a bottom of the third transverse plate 3247. The support 324 of the embodiment is an integrally formed part, and the voice coil 321, the support 324, the first centering sheet 61 and the second centering sheet 62 are matched with each other, so that the structure is compact, the space of the sound generating device 10 in the length direction is fully utilized, the width of the sound generating device 10 is reduced to adapt to the shape of the glasses legs 50, and the phenomenon of polarization generated when the voice coil 321 and the support 324 vibrate can be prevented.

As shown in fig. 11 and 12, more specifically, the two short plates 2132 of the lower shell 213 of the shell body 21 are formed with accommodating grooves 2133, as shown in fig. 9 and 10, the first centering branch 61 includes a first end 611, a first elastic part 612 and a second end 613 which are connected in sequence, the first end 611 is located in the accommodating groove 2133 and is adhesively fixed with the upper end of the lower shell 213, the upper end surface of the first end 611 is adhesively fixed with the convex plate 215, and the second end 613 is adhesively fixed with the second horizontal plate 3245; second centring disk 62 is including the third end 621, second elastic component 622 and the fourth end 623 that connect gradually, there is certain clearance between short plate 2132's bottom and the yoke 43, third end 621 bonds to short plate 2132's bottom, fourth end 623 bonds to the bottom face of third diaphragm 3247, first elastic component 612 and second elastic component 622 are curved bent piece, can increase the compliance of centring disk, drive the in-process of support 324 vibration at voice coil 321 and follow voice coil 321 sound production deformation, adjust the mechanical compliance of first centring disk 61 and second centring disk 62 in order to prevent that voice coil 321 from taking place polarization. Furthermore, the first elastic portion 612 is concave downward to form a curved surface, and the second elastic portion 622 is curved upward to form a curved surface, so that the height of the sound generating device 10 is reduced to match the slender shape of the temple 50.

The first spider 61 or the second spider 62 is provided with a first pad 624 electrically connected to the voice coil 321. Be equipped with first pad 624 and second pad 625 on the second centering branch piece 62, second centering branch piece 62 is conducting material, first centering branch piece 61 is non-conducting material, welds two lead wires of voice coil 321 to first pad 624 on two second centering branch pieces 62 respectively, second pad 625 is connected with the external power supply module electricity, thereby for the power supply of voice coil 321, the phenomenon of sound production broken string when can also preventing the vibration of voice coil 321, improve sound generating mechanism 10's reliability. Of course, the first stiffener 61 may be made of conductive material, and the second stiffener 62 may be made of non-conductive material; it is also possible to use a non-conductive material for both the first stiffener 61 and the second stiffener 62.

As shown in fig. 12 and 13, the yoke 43 has an avoiding hole 431 corresponding to the magnetic gap 411, an orthographic projection of the voice coil 321 on the yoke 43 is located in the avoiding hole 431, and the voice coil 321 can pass through the avoiding hole 431 when vibrating to the position of the yoke 43, so as to prevent the voice coil 321 from being in sound contact with the yoke 43 when vibrating, and avoid the voice coil 321 from being deformed to affect the performance of the sound generating device 10. Meanwhile, the avoiding hole 431 can enable airflow in the rear cavity of the sound generating device 10 to pass through smoothly, so that excessive air pressure inside the sound generating device 10 is avoided, heat can be dissipated effectively in time, and the acoustic performance of the sound generating device 10 is improved.

The yoke 43 includes a bottom plate 432 and two vertical plates 433 extending from the bottom plate 432 toward the housing 20, the escape hole 431 is formed in the bottom plate 432, the bottom plate 432 is fixed to the bottom of the housing 20, and the vertical plates 433 are fixed to the outer wall of the housing 20. When the magnet assembly 41 is fixed on the bottom plate 432 of the magnetic yoke 43, the long plate 2131 of the lower shell 213 of the shell body 21 is adhered on the magnetic yoke 43, the outer wall surface of the short plate 2132 of the lower shell 213 of the shell body 21 is adhered and fixed with the vertical plate 433 of the magnetic yoke 43, the assembly mode between the shell 20 and the magnetic yoke 43 is simple, and the structure is stable.

A mounting plate 434 is formed by bending the vertical plate 433 away from the housing 20, and the mounting plate 434 is used for fixing with the shell 51 of the temple 50. The both ends of the sound emitting device 10 are fixed to the housing 51 of the glasses legs 50 by the mounting plates 434, and the installation is easy. And two risers 433 set up in the outside of casing 20 along the length direction symmetry of yoke 43, can be fixed to glasses leg 50 respectively with the both ends of sound generating mechanism 10 length direction on, do not occupy the space of 50 width directions of glasses leg, can match the appearance of glasses leg 50 for glasses leg 50 is more pleasing to the eye and easily wears.

The mounting plate 434 of the present embodiment is provided with mounting holes 435 for fixing to the housing 51, and the sound generating device 10 can be fixed to the housing 51 of the temple 50 by screws passing through the mounting holes 435, which is simple to mount and low in cost. Of course, in other embodiments, the sound generator 10 may be secured in other ways, such as by snap-fit or adhesive attachment.

In addition, the present invention further provides a wearable device, as shown in fig. 1 and fig. 2, the wearable device includes a housing 51 and the sound generating apparatus 10, the sound generating apparatus 10 is located in the housing 51, a sound outlet 511 is formed on the housing 51, and a sound outlet channel 512 is formed between the diaphragm 31 and the sound outlet 511. The wearable device can be intelligent glasses and comprises glasses legs 50, the glasses legs 50 comprise shells 51, the sound generating device 10 disclosed by the invention adopts a high-aspect-ratio slender loudspeaker design, the design shape of the glasses legs 50 of the whole machine can be well formed in a covering mode, the light and attractive appearance of the glasses legs 50 can be ensured, the internal space of the glasses legs 50 can be fully utilized, and the performance of the sound generating device 10 is improved. And the sounding device 10 adopts a sounding mode of directly radiating positive sounding in the glasses leg 50, a front cavity is not required to be added, the distance of a sounding pipeline between the loudspeaker unit and the dial outgoing sound hole 511 can be shortened, airflow sound is reduced, and the audio effect of the whole machine is improved. Since the intelligent glasses adopt all the technical schemes of all the embodiments, at least all the beneficial effects brought by the technical schemes of the embodiments are achieved, and no further description is given here.

Preferably, the diaphragm 31 is arranged to face the sound outlet 511, the sound generating device 10 adopts a sound generating mode of directly radiating positive sound in the earpiece 50, the center line of the diaphragm 31 of the sound generating device 10 is overlapped with or slightly offset from the center line of the sound outlet 511 of the whole glasses, and the width of the sound outlet 511 of the whole glasses is larger than that of the conventional side sound outputting scheme, so that the audio effect of the whole glasses is effectively improved.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a sound generating mechanism, its characterized in that, sound generating mechanism is applied to wearable equipment, sound generating mechanism includes:

a housing;

magnetic circuit, accept in the casing, magnetic circuit include the magnet subassembly with set up in magnetic conduction subassembly on the magnet subassembly, magnetic circuit is formed with the confession the voice coil loudspeaker voice coil male magnetic gap, the magnetization direction of magnet subassembly with the vibration direction of voice coil loudspeaker voice coil all with sound generating mechanism's vertical direction is parallel, the magnet subassembly includes magnet unit and lower magnet unit, the magnetic conduction subassembly include respectively with the major axis of voice coil loudspeaker voice coil corresponds first magnetic conduction board and the second magnetic conduction board that sets up, first magnetic conduction board be located go up the magnet unit with between the lower magnet unit, the second magnetic conduction board is located go up the magnet unit and keep away from the one end of first magnetic conduction board.

2. The sounding device according to claim 1, wherein the sounding device is a rectangular parallelepiped, and the length of the sounding device is 18-30 mm.

3. The apparatus according to claim 1, wherein the driving assembly further includes a support for fixing the voice coil to the diaphragm, the auxiliary system further includes a second supporting centering piece spaced apart from the first supporting centering piece, one end of the second supporting centering piece is fixed to a bottom end of the support, and the other end of the second supporting centering piece is fixed to the housing.

4. The sound generating apparatus as claimed in claim 3, wherein the support comprises a connecting rod and a side plate bending from the connecting rod to the voice coil, the voice coil is fixed to the side plate, and the connecting rod is fixed to the diaphragm, the first centering pad and the second centering pad, respectively.

5. The sound generating apparatus as claimed in claim 4, wherein the connecting rod has a stepped surface extending in the direction of the voice coil, the first centering leg is fixed to the stepped surface, an upper end surface of the connecting rod is fixed to the diaphragm, and a lower end surface of the connecting rod is fixed to the second centering leg.

6. A sound-generating device as claimed in claim 3, wherein said auxiliary system is provided with two symmetrical said first centering branches and two symmetrical said second centering branches along the long axis direction of said voice coil, respectively.

7. The apparatus according to claim 3, wherein the first bobbin or the second bobbin has a first pad electrically connected to the voice coil.

8. The sound generating device according to any one of claims 2 to 7, wherein the ratio of the length to the width of the sound generating device is 4:1 to 5: 1.

9. A wearable device, which is characterized in that the wearable device comprises a shell and the sound generating device of any one of claims 1 to 8, wherein the sound generating device is located in the shell, the shell is provided with sound outlet holes, and a sound outlet channel is formed between the diaphragm and the sound outlet holes.

10. The wearable device of claim 9, wherein the diaphragm is disposed facing the sound outlet.