CN117061969B

CN117061969B - Driving mechanism and vibrating device

Info

Publication number: CN117061969B
Application number: CN202311315534.9A
Authority: CN
Inventors: 侯杰; 李恩晓; 栾尊玲
Original assignee: Gettop Acoustic Co Ltd
Current assignee: Gettop Acoustic Co Ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-02-27
Anticipated expiration: 2043-10-12
Also published as: CN117061969A

Abstract

The application provides a actuating mechanism and vibrating device, actuating mechanism includes actuating unit and driving medium, actuating unit includes driving medium and vibration coupling spare, the driving medium includes the driving medium and connects in the driving medium's actuating plate, the driving medium includes the stiff end and can relative stiff end motion's free end, the actuating plate takes place telescopic motion and can drive the relative stiff end rotation of free end, vibration coupling spare is connected and is used for absorbing the free end and drives transverse driving force and the tangential driving force that the driving medium produced in rotatory in-process between free end and driving medium, the unnecessary transverse vibration of driving medium or the swinging motion of rotation plane have been restrained or avoided, make vibrating device's driving medium and vibration subassembly can do the linear piston vibration of ideal vertical direction, the frequency response of product is straighter, the bandwidth is wider, the distortion is lower.

Description

Driving mechanism and vibrating device

Technical Field

The present disclosure relates to the field of acoustic technologies, and in particular, to a driving mechanism and a vibration device.

Background

At present, the piezoelectric speaker products directly and simply adopt the inverse piezoelectric effect of piezoelectric materials, such as applying a signal voltage between the upper electrode and the lower electrode of a piezoelectric sheet, the piezoelectric sheet generates bending motion under the driving of the signal voltage, and the piezoelectric sheet pushes air or drives the flexible materials combined with the piezoelectric sheet to generate bending motion, so that the contacted air is pushed to generate sound. As shown in fig. 1, when a piezoelectric ceramic plate structure with a single-end fixed cantilever beam is used as a drive, a piezoelectric ceramic plate 1 on the cantilever beam is stretched or shortened when an alternating electric signal is applied, so that a rigid plate 2 combined with the piezoelectric ceramic plate is rotated around a fixed end and the length of the rigid plate 2 is used as a radius. From the free end of the single-end fixed cantilever piezoelectric ceramic plate, the rotation motion can cause the rigid block 3 to generate left or right displacement Deltax in the X direction; producing a rotation angle in the XZ plane (as in fig. 18 °); this results in the stiff sheet 2 imparting an unwanted lateral driving force to the air-moving diaphragm causing it to oscillate in the XZ plane.

Through simulation analysis, as shown in fig. 2 and 3, these unwanted movements may cause unwanted modes of the diaphragm that may cause unwanted peaks and valleys in the frequency response of the sound signal emitted by the speaker, which is ideally driven in such a way that only up-and-down piston movements in the vertical Z direction are generated, without unwanted driving forces in other directions. Therefore, the inventor of the present application has found through a great deal of experiments and verification that when the traditional piezoelectric ceramic plate structure with single-end fixed cantilever beam is adopted as a driving structure to produce sound, some great problems exist, and when the piezoelectric ceramic plate structure is vibrated, because horizontal displacement and rotational movement of an XZ plane are generated, the loudspeaker generates unwanted movements except for vertical movements, so that the frequency response of the product is uneven, and larger peaks and valleys are generated; meanwhile, the nonlinearity of the product is large, and finally, the acoustic distortion of the product is very high.

Disclosure of Invention

In view of the above, the present application provides a driving mechanism, a speaker and a vibrator that can effectively solve the above-mentioned problems.

In one aspect, the application provides a driving mechanism, including actuating unit and driving piece, actuating unit includes driving piece and vibration coupling piece, the driving piece include the driving piece and connect in the driving piece's actuating piece, the driving piece include stiff end and can relative stiff end motion's free end, the actuating piece takes place telescopic movement can drive the free end is relative the stiff end is rotatory, vibration coupling piece connects the free end with be used for absorbing between the driving piece the free end is right the transverse driving force and the tangential driving force that the driving piece produced in the rotation process.

In an embodiment, the vibration coupling member includes a first frame and a second frame disposed opposite to each other, and an elastic member connected between the first frame and the second frame, the first frame is connected to the free end, and the second frame is connected to the transmission member.

In an embodiment, the elastic piece includes a first elastic piece and a second elastic piece, the first elastic piece and the second elastic piece are both bent, two ends of the first elastic piece are respectively connected with the first frame and the second frame, and two ends of the second elastic piece are respectively connected with the first frame and the second frame.

In an embodiment, the first frame includes a first base, a first long side and a first short side connected to two ends of the first base, the second frame includes a second base, a second long side and a second short side connected to two ends of the second base, the first base is opposite to the second base, the first long side corresponds to the second short side, and the first short side corresponds to the second long side; one end of the first elastic piece is connected to the tail end of the first short side, the other end of the first elastic piece is connected to the tail end of the second long side, one end of the second elastic piece is connected to the tail end of the second short side, and the other end of the second elastic piece is connected to the tail end of the first long side.

In an embodiment, a first connecting portion is formed at a side of the free end, which is close to the actuating piece, the first frame is fixedly connected with the first connecting portion, a second connecting portion is formed at a side of the bottom of the transmission piece, which is close to the driving piece, and the second frame is fixedly connected with the second connecting portion.

In an embodiment, the first connecting portion is a step formed between the end portions of the actuating piece and the driving piece, and the second connecting portion is a notch.

In an embodiment, the width of the first elastic sheet is greater than or equal to twice the thickness of the first elastic sheet, and the width of the second elastic sheet is greater than or equal to twice the thickness of the second elastic sheet.

In an embodiment, the vibration coupling member includes an arc member, one end of the arc member is connected to the free end, an opening is provided on one side of the transmission member, the opening includes an arc surface adapted to the arc member, and the arc member is clearance fit in the opening.

In an embodiment, the opening further comprises a straight surface connected to two radial ends of the circular arc surface, and the straight surface is tangent to the circular arc surface.

In an embodiment, the actuating piece is a piezoelectric ceramic fiber composite material, the piezoelectric ceramic fiber composite material comprises a composite piece, the composite piece comprises a composite body and interdigital electrodes arranged on two opposite surfaces of the composite body, and the composite body comprises a plurality of piezoelectric ceramic fiber composite layers and a polymer composite layer filled between any two adjacent piezoelectric ceramic fiber composite layers.

In an embodiment, the interdigital electrode is attached to the surface of the composite body by printing, electroplating etching or magnetron sputtering, and when an alternating electric signal is applied to the interdigital electrode, the composite body correspondingly deforms in a stretching way.

On the other hand, the application also provides a vibrating device, which comprises a vibrating component and the driving mechanism used for driving the vibrating component to vibrate, wherein one end of the driving piece is connected with the vibrating coupling piece, and the other end of the driving piece is connected with the vibrating component.

In an embodiment, the vibration device is a speaker, the vibration assembly includes a diaphragm, one end of the transmission member is connected to the vibration coupling member, and the other end of the transmission member is connected to the diaphragm.

In an embodiment, the vibration device is a vibrator, the vibrator comprises a housing, the vibration assembly comprises a vibration wall of the housing, the transmission member comprises a mass with a certain mass, and the transmission member is connected to the vibration wall.

In an embodiment, the driving mechanism is disposed in the housing, a fixing portion is disposed on a side wall of the housing, and the fixing end is fixedly connected to the fixing portion.

In an embodiment, two actuating units are provided, and the two actuating units are respectively disposed at two opposite sides of the transmission member.

In an embodiment, two transmission members are provided, and the two transmission members are respectively disposed at two opposite sides of the actuation unit.

In an embodiment, the transmission member comprises an elastic mechanism, and the transmission member is connected to the vibration wall through the elastic mechanism.

In an embodiment, the elastic mechanism includes a third frame and a fourth frame which are oppositely arranged, and an elastic member connected between the third frame and the fourth frame, the third frame is connected to the vibration wall, the fourth frame is connected to the mass block, the elastic member includes a third elastic sheet and a fourth elastic sheet, the third elastic sheet is elastically connected between one ends of the third frame and the fourth frame, and the fourth elastic sheet is elastically connected between the other ends of the third frame and the fourth frame.

In summary, the application provides a actuating mechanism and vibrating device, actuating mechanism includes actuating unit and driving medium, actuating unit includes driving medium and vibration coupling piece, the driving medium includes the driving piece and connects in the driving piece's driving piece, the driving piece includes stiff end and the free end that can relative stiff end motion, the flexible motion takes place for the driving of driving piece can drive the free end relative stiff end rotation, vibration coupling piece connects and is used for absorbing the free end and drives transverse driving force and the tangential driving force that the driving medium produced in rotatory in-process between free end and driving medium, the unnecessary transverse vibration of driving medium or the swinging motion of rotation plane have been restrained or avoided, make driving medium and vibrating diaphragm of speaker can do the linear piston vibration in ideal vertical direction, the frequency response of product is straighter, the bandwidth is wider, the distortion is lower. The vibrator utilizes the actuating unit to restrain or avoid unnecessary transverse vibration or swinging motion of a rotating plane of the mass block, utilizes the elastic mechanism to provide proper damping for the mass block in the vertical direction, and restrains unnecessary vibration in other directions, so that the mass block can perform ideal linear piston vibration in the vertical direction, a product generates linear frequency response with large amplitude and wide frequency, and a linear vibration motor product with simple structure and excellent performance can be provided.

Drawings

Fig. 1 is a schematic diagram of a rotation motion of a cantilever piezoelectric ceramic wafer structure in the prior art.

Fig. 2 is a diagram of simulation analysis of a diaphragm using a conventional cantilever piezoelectric ceramic plate structure as a driving structure.

Fig. 3 is a graph showing the frequency response of sound signals when a vibrating diaphragm using a conventional cantilever piezoelectric ceramic plate structure as a driving structure vibrates.

Fig. 4 is a schematic perspective view of an exemplary speaker of the present application.

Fig. 5 is a perspective cross-sectional view of a speaker in an embodiment.

Fig. 6 is an enlarged schematic view of the portion a in fig. 5.

Fig. 7 is a schematic perspective view of the driving mechanism in fig. 5.

Fig. 8 is a side view of the drive mechanism of fig. 7.

Fig. 9 is an exploded view of the drive mechanism of fig. 7.

Fig. 10 is a perspective cross-sectional view of a speaker in another embodiment.

Fig. 11 is a schematic perspective view of the driving mechanism in fig. 10.

Fig. 12 is a side view of the drive mechanism of fig. 11.

Fig. 13 is an exploded view of the drive mechanism of fig. 11.

Fig. 14 is a perspective cross-sectional view of a speaker in another embodiment.

Fig. 15 is an enlarged schematic view of a portion B in fig. 14.

Fig. 16 is a side view of the drive mechanism of fig. 14.

Fig. 17 is an exploded view of the drive mechanism of fig. 14.

Fig. 18 is a perspective cross-sectional view of a speaker in another embodiment.

Fig. 19 is a side view of the drive mechanism of fig. 18.

Fig. 20 is an exploded view of the drive mechanism of fig. 18.

Fig. 21 is a simulated view of the speaker of fig. 18.

Fig. 22 is a graph of the frequency response of the sound signal of the speaker of fig. 18.

Fig. 23 is a cross-sectional view of the internal structure of an exemplary vibrator of the present application.

Fig. 24 is a schematic perspective view of an exemplary piezoceramic fiber composite material of the present application.

Fig. 25 is an exploded view of the piezoelectric ceramic fiber composite of fig. 24.

Fig. 26 is a front view of the composite body of fig. 24, in cross-section along A-A.

Fig. 27 is a cross-sectional oblique view of the composite sheet of fig. 24.

Fig. 28 is a cross-sectional elevation view of the composite sheet of fig. 24.

Fig. 29 is a side cross-sectional view of an exemplary driver of the present application.

In the figure, a 1-piezoelectric ceramic sheet; 2-rigid sheets; 3-rigid blocks; 10-a speaker; 12-vibrating diaphragm; 14-a support; 16-a drive mechanism; 18-a central portion; 20-a ring folding part; 22-a transmission member; 24-driving member; 26 (70, 92) -a vibration coupling; 28-driving piece; 30-actuating plate; 32-a fixed end; 34-free end; 36-a composite body; 37-upper electrode set; 37 A-A first electrode; 37 b-a second electrode; 38-interdigital electrodes; 39-a lower electrode group; 39 A-A third electrode; 39 b-a fourth electrode; 40-a piezoelectric ceramic fiber composite layer; 42-polymer composite layer; 44-a first frame; 46-a second frame; 48-a first base; 50-a first long side; 52-a first short side; 54-a second base; 56-a second long side; 58-second short side; 60-a first elastic sheet; 62-a second spring plate; 64-a first connection; 66-a second connection; 68-bump; 72-arc piece; 74-opening; 76-arc surface; 78-plane; 80-a first part; 82-a second portion; 84-vibrator; 86-mass block; 88-an actuation unit; 90-elastic means; 94-a housing; 96-fixing part.

Detailed Description

Before the embodiments are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present application may be embodied in other ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of the terms "comprising," "including," "having," and the like are intended to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application does not limit the number of the element to one, but may include a plurality of the elements.

The present application provides a vibration device including a vibration assembly and a driving mechanism for driving the vibration assembly to vibrate, the vibration device may be a speaker or a vibrator, etc., and the vibrator may be a linear motor, for example. When the vibration device is a loudspeaker, the vibration component comprises a vibrating diaphragm; when the vibration device is a vibrator, the vibration assembly includes a vibration wall.

Referring to fig. 4, 5 and 14, the vibration device is a speaker 10, and the speaker 10 includes a diaphragm 12, a support member 14 and a driving mechanism 16 for driving the diaphragm 12 to vibrate, wherein the diaphragm 12 is supported and fixed on the support member 14, and one end of the driving mechanism 16 is connected to the support member 14, and the other end is connected to the diaphragm 12. In the illustrated embodiment, the speaker 10 is generally cylindrical, the support 14 is a circular wall cylinder with two open ends, and in other embodiments, the speaker 10 may be designed in other shapes. Specifically, diaphragm 12 includes a central portion 18 and a ring portion 20 connected to the periphery of central portion 18, and the outer edge of ring portion 20 is fixedly connected to the top surface of support 14.

Referring to fig. 7, three directions X, Y, Z are defined perpendicular to each other according to the driving mechanism 16. The use of the drive mechanism 16 for the loudspeaker 10 allows the driving force to occur only in the vertical Z direction, avoiding the generation of unwanted driving forces in other directions, thereby providing a loudspeaker product solution that can achieve linear large amplitude vibrations. Specifically, the driving mechanism 16 includes an actuating unit and a transmission member 22, where the transmission member 22 is, for example, rectangular and vertically disposed, and the top end of the transmission member 22 is connected to the central portion 18, and is fixedly connected to the central portion of the central portion 18, for example, by means of gluing, welding, or the like. The actuating unit includes a driving member 24 and a vibration coupling member, the driving member 24 includes a driving plate 28 and an actuating plate 30 connected to one side of the driving plate 28, the driving plate 28 is, for example, a rigid sheet, and the length of the actuating plate 30 is smaller than the length of the driving plate 28. The driving plate 28 includes a fixed end 32 and a free end 34 movable relative to the fixed end 32, the fixed end 32 and the free end 34 being located at opposite ends of the driving plate 28, respectively. In other embodiments, two free ends 34 may be provided, with the fixed end 32 being located between the two free ends 34, for example at a midpoint of the two free ends 34. The telescopic motion of the actuating piece 30 can drive the free end 34 to rotate in the XZ plane relative to the fixed end 32, the vibration coupling piece is connected between the free end 34 and the driving piece 22 and is used for absorbing the transverse driving force in the X direction and the tangential driving force in the rotation direction of the XZ plane generated by the driving piece 22 in the rotation process of the free end 34, and the unnecessary transverse vibration of the driving piece 22 or the swinging motion of the rotation plane are restrained or avoided, so that the driving piece 22 and the vibrating diaphragm 12 of the loudspeaker 10 can do ideal linear piston vibration in the vertical direction Z, the frequency response of the product is flatter, the bandwidth is wider, and the distortion is lower.

The actuating plate 30 may be made of a conventional piezoelectric ceramic material, and the actuating plate 30 is driven to move in a telescopic manner by applying an alternating electrical signal to the actuating plate 30, so as to drive the driving plate 28 to move in a bending manner, so that the free end 34 of the driving plate rotates relative to the fixed end 32.

Preferably, the actuator plate 30 is a piezoceramic fiber composite material, as shown in fig. 24-28, which includes a composite plate, i.e., the actuator plate 30, including a composite body 36 and interdigital electrodes 38 provided on two opposite surfaces of the composite body 36, the composite body 36 including a plurality of piezoceramic fiber composite layers 40 and a polymer composite layer 42 filled between any adjacent two of the piezoceramic fiber composite layers 40. The interdigital electrode 38 is attached to the surface of the composite body 36 by printing, electroplating etching or magnetron sputtering, and when an alternating electric signal is applied to the interdigital electrode 38, the composite body 36 correspondingly deforms in a telescopic manner, so that the whole composite sheet deforms in a telescopic manner.

The interdigital electrode 38 is made of liquid conductive material and is attached to the surface of the composite body 36 in a printing, electroplating etching or magnetron sputtering mode, so that the gap between the interdigital electrode 38 and the composite body 36 is 0, compared with the scheme that a layer of polyimide and an adhesive glue layer are added between the conventional flexible circuit board etching electrode and the piezoelectric ceramic plate, the strength of an induced polarized electric field and a driving electric field of the interdigital electrode is greatly enhanced, and finally the composite body 36 can generate larger deformation and amplitude under the same voltage, the driving efficiency is improved, and meanwhile, the product size can be reduced; from another perspective, a gap of 0 between the interdigital electrode 38 and the composite body 36 can reduce the driving voltage, thereby reducing the product energy consumption.

The application of an alternating electrical signal to the interdigital electrode 38 causes the composite body 36 to deform elastically. Specifically, the composite body 36 has a rectangular shape as a whole, that is, each of the piezoelectric ceramic fiber composite layers 40/polymer composite layers 42 extends in the longitudinal direction of the composite body 36, a plurality of the piezoelectric ceramic fiber composite layers 40 and polymer composite layers 42 are stacked in the width direction of the composite body 36, and the interdigital electrodes 38 are provided on opposite sides, for example, the top surface and the bottom surface, in the height direction of the composite body 36, respectively. In this embodiment, the piezoelectric ceramic fiber composite layer 40 and the polymer composite layer 42 are both square and long, the length directions of the piezoelectric ceramic fiber composite layer 40 and the polymer composite layer 42 are consistent with the length direction of the composite body 36, and the composite body 36 is deformed in a stretching manner in the length direction after the interdigital electrode 38 is energized.

Preferably, the plurality of piezoelectric ceramic fiber composite layers 40 are the same size, the plurality of piezoelectric ceramic fiber composite layers 40 are arranged in parallel and at equal intervals in the same plane, and the polymer composite layer 42 is filled between any adjacent two piezoelectric ceramic fiber composite layers 40. The polymer composite layer 42 is, for example, an epoxy resin material, which is a thermosetting polymer, and when it is cured with a curing agent to form a three-dimensional crosslinked network structure, it exhibits a series of excellent characteristics such as good mechanical properties, excellent adhesion, small curing shrinkage, high stability, etc.; or, the polymer composite layer 42 is a carbon fiber reinforced resin matrix composite material, the carbon fiber resin composite material is a composite material with carbon fiber as a reinforcing material and resin as a matrix, and the polymer composite layer 42 formed by adopting the material has higher Young modulus on the basis of keeping certain toughness, so that the polymer composite layer 42 can be better matched with the piezoelectric ceramic fiber composite layer 40 with high Young modulus, so that the product can form large deformation in normal operation and cannot break failure. The polymer composite layer 42 is tightly combined with two adjacent piezoelectric ceramic fiber composite layers 40, the thickness of the cured polymer composite layer 42 is approximately the same as the height of the piezoelectric ceramic fiber composite layers 40, and the following is noted: the same in thickness or height, i.e. in vertical direction; the piezoelectric ceramic fiber composite layer 40 may have the same width as the polymer composite layer 42 in the width direction, i.e., the left-right direction, or may be set smaller or larger than the width of the polymer composite layer 42.The smaller the width of the piezoceramic fiber composite layer 40, the greater the width of the polymer composite layer 42, the softer and conversely the harder the composite body 36, depending on the resonant frequency requirements of the speaker product. I.e. by adjusting the width ratio of the two, the resonance frequency of the loudspeaker product can be adjusted. The resonant frequency calculation formula is f ₀ =1/[2π√(MC)]Where C is the inverse of the hardness of the composite body 36.

The interdigital electrode 38 may be made of conductive ink, conductive silver paste, electroplating solution or metal, and the interdigital electrode is formed by printing, photo etching, electroplating etching, or magnetron sputtering metal deposition technique on the upper and lower surfaces of the composite body 36. In the illustrated embodiment, the interdigitated electrodes 38 cover the upper and lower complete surfaces of the composite body 36. Specifically, the interdigital electrode 38 includes an upper electrode group 37 provided on the upper surface of the composite body 36 and a lower electrode group 39 provided on the lower surface of the composite body 36. The upper electrode group 37 includes a comb-shaped first electrode 37a and a comb-shaped second electrode 37b, wherein the fingers of the first electrode 37a may be referred to as finger parts or the fingers of the comb teeth and the fingers of the second electrode 37b are arranged opposite to each other and staggered with each other; the lower electrode group 39 includes a third electrode 39a and a fourth electrode 39b, and the fingers of the third electrode 39a are disposed opposite to the fingers of the fourth electrode 39b and are staggered with each other. Preferably, the upper electrode group 37 and the lower electrode group 39 are arranged in the same manner, i.e. the upper electrode group 37 and the lower electrode group 39 are symmetrical with respect to the composite body 36, specifically, the first electrode 37a is symmetrical with the third electrode 39a, and the second electrode 37b is symmetrical with the fourth electrode 39 b.

Directly below the interdigitated electrodes is the dead voltage, i.e. there is no effective electric field distribution directly below the electrodes. The combination of performance and process implementation executability requires the selection of proper electrode width and electrode spacing to ensure that the electric field active area is larger, the ineffective dead area range is smaller, and finally the effective electric field intensity applied to the piezoelectric ceramic fiber composite material is stronger, and larger deformation is generated under the same signal voltage.

The composite body 36 in this application has a thickness/height of 0.01mm to 0.5mm, a width of 1mm to 60mm, and a length of 1mm to 200mm. The width of the cross section of the piezoelectric ceramic fiber composite layer 40 in the vertical length direction is 0.01mm to 0.5mm, the width or thickness of the cross section of the polymer composite layer 42 is 0.05mm to 2mm, the electrode finger pitch of the upper electrode group 37 and the lower electrode group 39 is 0.05mm to 2.5mm, the electrode widths of the first electrode 37a, the second electrode 37b, the third electrode 39a and the fourth electrode 39b are 0.05mm to 1mm, and the electrode thickness, that is, the dimension along the height direction of the composite body 36 is 0.005mm to 0.35mm.

The interdigital electrode induced polarization electric field and the driving electric field in the piezoelectric ceramic fiber composite material are distributed along the fiber length direction, so that the applied polarization voltage and the driving voltage are greatly reduced, and more importantly, the d33 piezoelectric effect of the piezoelectric ceramic fiber composite material is utilized, the driving capability of the composite material is greatly improved, and compared with the performance of the commonly used d31 type piezoelectric composite material, the performance of the composite material is doubled.

The composite sheet with the interdigital electrodes 38 printed on the upper and lower surfaces is polarized as follows: and placing the composite sheet in silicone oil, and providing polarization voltage between the electrodes according to a value calculated by (the distance between adjacent positive electrode finger parts and negative electrode finger parts is mm) x (2.5-3.5 kV/mm), wherein the polarization time is 10-40 min.

There are a number of structural designs for the vibration coupling, and this application exemplifies two specific embodiments.

In the embodiment shown in fig. 5-9, the vibration coupling 26 includes oppositely disposed first and second frames 44, 46 and an elastic member connected between the first and second frames 44, 46, the first frame 44 being connected to the free end 34 and the second frame 46 being connected to the transmission member 22. Wherein the first frame 44 and the free end 34 and the second frame 46 and the driving member 22 may be fixedly connected by welding or bonding.

More specifically, the first frame 44 includes a first base 48, a first long side 50 and a first short side 52 connected to two ends of the first base 48, the second frame 46 includes a second base 54, a second long side 56 and a second short side 58 connected to two ends of the second base 54, the first base 48 is opposite to the second base 54, the first long side 50 corresponds to the second short side 58, and the first short side 52 corresponds to the second long side 56. The elastic member includes a first elastic sheet 60 and a second elastic sheet 62, where the first elastic sheet 60 and the second elastic sheet 62 are both bent and arranged, and have a certain elasticity in the X direction, and can generate an elongation or a shortening deformation in the X direction under the action of force, so as to absorb the displacement motion in the X direction generated by the free end 34 of the driving sheet 28. The two ends of the first elastic sheet 60 are respectively connected to the first frame 44 and the second frame 46, and the two ends of the second elastic sheet 62 are respectively connected to the first frame 44 and the second frame 46; the elastic sheet and the frame can be fixedly connected in a welding, riveting, crimping or integral injection molding mode. Specifically, the first elastic piece 60 has one end connected to the end of the first short side 52 and the other end connected to the end of the second long side 56, and the second elastic piece 62 has one end connected to the end of the second short side 58 and the other end connected to the end of the first long side 50.

In this embodiment, the actuating plate 30 is connected to the upper surface of the driving plate 28, a first connecting portion 64 is formed on a side of the free end 34 near the actuating plate 30, the first connecting portion 64 is, for example, a step formed between the actuating plate 30 and an end of the driving plate 28, the first frame 44 is, for example, placed on the first connecting portion 64 and is fixedly connected to the first connecting portion 64, a second connecting portion 66 is disposed on a side of the bottom of the transmission member 22 near the driving member 24, the second frame 46 is fixedly connected to the second connecting portion 66, and the second connecting portion 66 is, for example, a notch. Preferably, the first connecting portion 64 is disposed flush with the second connecting portion 66 in the horizontal direction.

In the illustrated embodiment, the first spring 60 and the second spring 62 each have a certain height in the Z direction, i.e., the first spring 60 and the second spring 62 each have a certain width to provide rigidity to the vibration coupling 26 in the Z direction, so that a slight bending deformation can be generated in the Z direction to absorb the rotational movement in the XZ plane generated by the free end 34 of the driving plate 28. Preferably, the width of the first elastic sheet 60 is equal to or greater than twice the thickness thereof, and the width of the second elastic sheet 62 is equal to or greater than twice the thickness thereof.

In the illustrated embodiment, the inner wall of the support member 14 is provided with a protrusion 68 protruding therefrom, and the fixed end 32 of the driving plate 28 is attached to the bottom of the protrusion 68, for example, by welding, bonding, or the like.

When an alternating audio signal is applied to the upper and lower interdigital electrodes 38 on the actuating plate 30, that is, an electrical signal with the same polarity (positive at a certain moment) is applied to the first electrode 37a and the third electrode 39a, an electrical signal with the same polarity (negative at a certain moment) is applied to the second electrode 37b and the fourth electrode 39b, and the free end 34 of the driving plate 28 generates a rotary motion about the fixed end 32 thereof, so that the driving member 22 and the central portion 18 of the diaphragm 12 are further driven to jointly generate a piston vibration in the up-down direction, thereby driving the diaphragm 12 to push air to generate sound. Due to the structural design of the vibration coupling 26, lateral displacement Δx of the transmission member 22 can be absorbed while suppressing rotational movement in the XZ plane. Eventually, the vibrating portion of the speaker 10, such as the diaphragm 12, will move more like a piston in the vertical direction Z, thereby pushing the air to make a sound.

Meanwhile, the driving mechanism 16 adopts the piezoelectric ceramic fiber composite material, so that the driving voltage is low and the vibration amplitude is large; meanwhile, through acoustic impedance matching of the vibrating diaphragm assembly, air is driven in a larger area, so that the efficiency of the loudspeaker is improved, and the sound loudness is improved; because the nonlinear swinging motion in the transverse direction and the vertical plane is structurally restrained, the frequency response curve of the product is flatter, the frequency response is widened, and the distortion of the product is reduced.

In the embodiment shown in fig. 10-13, the vibration coupling 26 in the embodiment shown in fig. 5-9 is used as the actuating units, two actuating units are provided, the structural arrangement of the two actuating units is the same, and the two actuating units are arranged in a mirror symmetry about the transmission member 22.

When alternating electric signals are applied to the driving members 24 of the two actuating units at a certain moment to enable the two driving members 24 to simultaneously generate downward bending motions, the free end 34 of the left driving piece 28 generates downward rotation motions taking the fixed end 32 as a center, and the rotation motions generate left displacement in the x direction and right rotation angles in the XZ plane when the free end 34 is seen; the free end 34 of the right hand drive tab 28 will rotate downwardly about its fixed end 32, which will displace right in the x-direction and left in the XZ plane as viewed from the free end 34. Since the two actuating units are substantially identical in structure and performance and are disposed in mirror symmetry about the center of the speaker drive, the forces or displacements generated by the two actuating units in the horizontal direction cancel each other out, and the two actuating units do not exert forces on the driving member 22 and the diaphragm 12 in the horizontal direction or force them to generate horizontal displacements; at the same time, the rotational movements of the two actuating units in the XZ plane are identical in magnitude and opposite in direction, and thus cancel each other out, avoiding rotational movements of the transmission member 22 and the diaphragm 12 in the XZ plane. The forces and displacements of the two actuating units in the horizontal direction are equal, the directions are opposite and offset, the rotary motions in the XZ plane are also equal, the directions are opposite and offset, and finally, only the driving force for the driving part 22 and the vibrating diaphragm 12 in the vertical direction Z is remained, so that the vibrating diaphragm 12 vibrates in the vertical direction Z, and air is pushed to generate a sparse and dense change to generate sound.

Compared with the embodiment shown in fig. 5-9, the two actuating units are arranged in a mirror symmetry manner, so that the diaphragm 12 is prevented from being influenced by forces outside the vertical direction Z in design, and therefore, a product can perform ideal piston vibration in the vertical direction Z, and the frequency response curve of the product is flatter, the frequency response bandwidth is wider, and the distortion is lower.

In the embodiment shown in fig. 14-17, the vibration coupling member 70 includes an arc member 72, the arc member 72 has a non-closed arc structure, one end of the arc member 72 is connected to the free end 34 of the driving piece 28, an opening 74 is provided at one side of the bottom of the driving member 22, the opening 74 includes an arc surface 76 matching with the arc member 72, the arc member 72 is clearance fit in the opening 74, when the arc member 72 is pulled by a transverse force, a leftward displacement relative to the driving member 22 can be generated, so that the driving member 22 and the diaphragm 12 are prevented from being displaced leftward by the transverse force, and the arc structure of the arc member 72 can also perform a relative rotation motion relative to the arc surface 76 in the opening 74, so that the driving member 22 can also be prevented from generating a rotation motion in the XZ plane. In this way, the driving member 22 and the diaphragm 12 generate only the piston vibration in the vertical direction Z under the alternating audio signal, so that the air is pushed by the diaphragm 12 to generate sound. The embodiment solves the problem of unnecessary motion of the driving structure of the traditional loudspeaker in multiple directions by a simple structure, and only generates vertical up-and-down motion in the vertical direction Z, so that the product has larger amplitude, higher sound, flatter frequency response curve, wider frequency response bandwidth and lower distortion.

In the illustrated embodiment, the opening 74 further includes straight surfaces 78 connected to respective radial ends of the arcuate surface 76, and the straight surfaces 78 are tangential to the arcuate surface 76. Wherein, the arc piece 72 can be a single element and is fixedly connected with the driving piece 28; the circular arc member 72 may also be formed by winding the driving plate 28 extending outwardly from the free end 34 thereof, i.e., the circular arc member 72 is integrally formed with the driving plate 28.

Alternatively, the driving member 22 includes a first portion 80 and a second portion 82, where the first portion 80 and the second portion 82 are connected side by side, and the second portion 82 is connected to the bottom of the first portion 80, and the opening 74 is provided on one side of the second portion 82.

In the embodiment shown in fig. 18-20, the vibration coupling 70 in the embodiment shown in fig. 14-17 is used as the actuating units, two actuating units are provided, the structural arrangement of the two actuating units is the same, and the two actuating units are arranged in a mirror symmetry about the transmission member 22. In this embodiment, the effect produced when the alternating electrical signals are simultaneously applied to the two actuating units is similar to that of the embodiment shown in fig. 10 to 13 described above, and will not be described again.

It should be understood that in other embodiments, more than two actuating units may be provided, and that the transmission member 22 may be provided in other shapes, such as cylindrical, etc.

It should also be understood that in the above embodiment, only one actuating plate 30 of each driving member 24 is provided, and in other embodiments, a plurality of actuating plates 30 of each driving member 24 may be provided according to actual design requirements, for example, two actuating plates 30 are provided for each driving member 24, and two actuating plates 30 are respectively connected to opposite sides of the corresponding driving plate 28 as shown in fig. 29.

In the above embodiments, the center portion 18 of the diaphragm 12 is formed in a flat sheet-like structure, but the specific shape and structure of the center portion 18 are not limited in this application, and in other embodiments, the center portion 18 may be formed in a cone-basin shape or the like.

The top of the driving member 22 is connected to the central portion 18 of the diaphragm 12, for example by adhesive bonding. In the illustrated embodiment, the driving member 22 is rectangular in shape. In other embodiments, the driving member 22 may have a reverse taper structure, that is, the driving member 22 has a small transverse cross-sectional area near the end of the vibration coupling member and a large transverse cross-sectional area near the end of the diaphragm 12, so as to better suppress the split vibration of the diaphragm 12. The transmission member 22 may be hollow in structure to reduce the vibration mass. The transmission member 22 may be a lightweight rigid block, such as aerogel or lightweight high strength porous ceramic. The material of the transmission member 22 may be a light metal material such as aluminum, lithium, magnesium and alloys thereof, or a PMI foam body with aluminum foils on both sides, or an aerogel or a light high-strength porous ceramic with certain mechanical strength. The light high-strength porous ceramic material is prepared by depositing a layer of silicon carbide on the surface of the ceramic nanowire, and the silicon carbide has the characteristics of high strength and high hardness, and the molded product has the characteristics of high porosity, low density, high strength, easiness in processing and high temperature resistance, and is particularly suitable for being used as a light rigid body in a loudspeaker. The key performance index parameters of the lightweight high-strength porous ceramic are preferably as follows: the Young modulus of the lightweight high-strength porous ceramic is 1 GPa-50 GPa, the volume density is 0.1 g/cm < 3 > -0.9 g/cm < 3 >, and the porosity is 70% -98%. The high porosity can realize low density and high Young's modulus, and avoid unnecessary split vibration or unnecessary multi-modes, so that the material is an excellent functional material of the loudspeaker structure.

Please refer to fig. 21 and 22, which are respectively a vibration state simulation structure and an acoustic performance simulation graph obtained by the speaker according to the embodiments shown in fig. 18-20. From the simulation result of the vibration state, the product vibrates in the vertical direction Z in a similar manner to the motion of a piston; from the results of the acoustic performance simulation, the frequency response width of the product covers 280Hz to 10KHz, and the sound pressure level is about 95dBSPL@1KHz, i.e. the loudspeaker has wide frequency response and high sound generation. Compared with the loudspeaker of the embodiment shown in fig. 14-17, the mirror-symmetrical actuating units are adopted, so that the diaphragm assembly is prevented from being influenced by forces outside the vertical direction Z in design, and therefore, a product can perform ideal piston vibration in the vertical direction Z, and therefore, the frequency response curve of the product is flatter, the frequency response bandwidth is wider, and the distortion is lower.

Referring to fig. 23, the vibration device is a vibrator 84, and the vibrator 84 includes a housing 94 and a driving mechanism as described above, in which one end of a transmission member is connected to the vibration coupling member and the other end is connected to the vibration assembly. The transmission in the drive mechanism includes a mass 86 having a mass, herein referred to as the mass range of the mass of a conventional vibrator, the vibration assembly includes a vibration wall of the housing 94, for example, including a top wall and a bottom wall of the housing 94, and the mass 86 is connected to the vibration wall of the housing 94 to drive the housing 94 to vibrate, for example, to drive the top wall and the bottom wall of the housing 94 in the vertical direction.

Vibrator 84 further comprises an actuating unit 88, which actuating unit 88 comprises a driving member 24 for driving mass 86 into vibration, and a vibration coupling member 92 connected between driving member 24 and mass 86 for absorbing the lateral and tangential driving forces generated by driving member 24 on mass 86 during rotation.

In some embodiments, two actuating units 88 may be provided, with two actuating units 88 being disposed on opposite sides of the transmission member, respectively.

In other embodiments, two transmission members may be provided, one on each side of the actuation unit 88.

Optionally, the driving member further comprises an elastic mechanism 90, and the driving member is connected to the vibration wall of the housing 94 through the elastic mechanism 90. In the illustrated embodiment, the vibrator 84 includes a mass 86, an actuating unit 88 disposed on one opposite side of the mass 86, and a resilient mechanism 90 disposed on the other opposite side of the mass 86, and the mass 86 is square, for example. In the present embodiment, the two actuating units 88 are identical in structure and are symmetrically disposed on the left and right sides of the mass 86 in the horizontal direction, the two elastic mechanisms 90 are identical in structure and are symmetrically disposed on the top and bottom sides of the mass 86 in the vertical direction, and the two elastic mechanisms 90 can provide proper damping for the vibration of the mass 86 in the vertical direction while suppressing unwanted vibration in other directions. Wherein the spring mechanism 90 is identical in construction to the vibration coupling of the embodiment shown in fig. 5-9; the actuating unit 88 comprises a driving member 24 and a vibration coupling member 92, the vibration coupling member 92 of this embodiment being of the same construction as the vibration coupling member of the embodiment shown in fig. 14-17. The driving member 24 includes a driving plate 28 and an actuating plate 30 connected to the driving plate 28, the driving plate 28 includes a fixed end 32 and a free end 34 capable of moving relative to the fixed end 32, the actuating plate 30 can drive the free end 34 to rotate relative to the fixed end 32, and a vibration coupling member 92 is connected between the free end 34 and the mass 86 for absorbing a transverse driving force and a tangential driving force generated by the free end 34 to the mass 86 during rotation.

When alternating electrical signals are applied to the two actuating units 88, the driving member 24 undergoes bending motion and further drives the mass 86 to vibrate up and down. In this embodiment, the piezoelectric ceramic fiber composite material is used as the driving material, and the vibration coupling members 92 are symmetrically arranged at two sides of the mass block 86, so that the vibrator 84 can generate a linear frequency response with large amplitude and wide frequency, and a linear vibration motor with simple structure and excellent performance is provided.

It should be appreciated that in other embodiments, the vibrator 84 may also be provided to include one actuation unit 88 and two elastic mechanisms 90; alternatively, the vibrator 84 is provided to include two actuating units 88 and one elastic mechanism 90, and the elastic mechanism 90 may be connected between the top wall of the housing 94 and the mass 86.

In this embodiment, two actuating plates 30 are provided for each driving member 24, and the two actuating plates 30 are respectively connected to opposite sides of the driving plate 28.

More specifically, the vibrator 84 includes a housing 94, two actuating units 88, a mass block 86 and two elastic mechanisms 90 are all disposed in the housing 94, fixing portions 96 are respectively provided on inner surfaces of two opposite side walls of the housing 94 in a horizontal direction, and the fixed ends 32 of the driving plates 28 are fixedly connected to the fixing portions 96, for example, the fixed ends 32 rest on top surfaces of the fixing portions 96 and are fixedly connected to each other. The vibration coupling member 92 includes a circular arc member 72, the circular arc member 72 has a non-closed circular arc structure, one end of the circular arc member 72 is connected to the free end 34, two opposite sides of the mass block 86 are respectively provided with an opening 74, the opening 74 is disposed at a side middle position of the mass block 86, the opening 74 includes a circular arc surface 76 adapted to the circular arc member 72, and the circular arc member 72 is in clearance fit with the opening 74. The opening 74 further includes straight surfaces 78 connected to the radial ends of the circular arc surface 76, respectively, and the straight surfaces 78 are tangential to the circular arc surface 76.

The elastic mechanism 90 includes a third frame and a fourth frame disposed opposite to each other, the third frame being connected to a top wall or a bottom wall of the housing 94, and the fourth frame being connected to a top surface or a bottom surface of the mass block 86, and an elastic member connected between the third frame and the fourth frame, the third frame and the fourth frame having the same width as the mass block 86. The third frame comprises a third base, a third long side and a third short side, wherein the third long side and the third short side are connected to two ends of the third base, the fourth frame comprises a fourth base, a fourth long side and a fourth short side are connected to two ends of the fourth base, the third base and the fourth base are oppositely arranged, the third long side corresponds to the fourth short side, and the third short side corresponds to the fourth long side. The elastic piece comprises a third elastic piece and a fourth elastic piece, the third elastic piece and the fourth elastic piece are bent and arranged, certain elasticity is provided in the vertical direction, and extension or shortening deformation can be generated in the vertical direction under the action of force. Two ends of the third elastic sheet are respectively connected with the third frame and the fourth frame, and two ends of the fourth elastic sheet are respectively connected with the third frame and the fourth frame; the elastic sheet and the frame can be fixedly connected in a welding, riveting, crimping or integral injection molding mode. Specifically, one end of the third elastic piece is connected to the end of the third short side, the other end of the third elastic piece is connected to the end of the fourth long side, one end of the fourth elastic piece is connected to the end of the fourth short side, and the other end of the fourth elastic piece is connected to the end of the third long side. The specific structure of the spring mechanism 90 in this embodiment is similar to that of the vibration coupling 26 in the embodiment of fig. 5-9 and is not numbered in detail.

In some embodiments, the driving plate 28 may also have two free ends 34, and the fixed end 32 is located between the two free ends 34, for example, the fixed end 32 is located at a middle position of the two free ends 34, and when the alternating electric signal is applied to the driving plate 30, the two free ends 34 respectively generate bending motion up and down relative to the fixed end 32.

It should be noted that the broken lines in the figures of the present application represent broken lines.

According to the loudspeaker, on the basis of realizing large-amplitude high sound pressure of the loudspeaker by arranging the vibration coupling piece, linear vibration in the vertical direction is further realized, unnecessary transverse vibration or swinging motion of a rotating plane is restrained or avoided, and the fundamental defect of the driving structure of the traditional loudspeaker in design is overcome. The linear vibration reduces the peak valley on the frequency response curve of the loudspeaker, so that the frequency response curve is flatter, the bandwidth of the loudspeaker response is widened, and the distortion of products is reduced. Meanwhile, the loudspeaker is easy to carry out industrial mass production in batches, and the industrial popularization of using the double-sided interdigital electrode piezoelectric ceramic fiber composite material as a driving mechanism of the loudspeaker is greatly promoted, so that a technical route which can be really industrialized is found for the loudspeaker without rare earth.

In summary, the application provides a actuating mechanism, speaker and vibrator, actuating mechanism includes actuating unit and driving medium, actuating unit includes driving medium and vibration coupling piece, the driving medium includes the driving medium and connects in the driving medium's actuating medium, the driving medium includes stiff end and can relative stiff end movable free end, the telescopic motion takes place for the actuating medium can drive the free end relative stiff end rotation, vibration coupling piece connects and is used for absorbing the free end and drives transverse driving force and the tangential driving force that the driving medium produced in rotatory in-process driving medium, the unnecessary transverse vibration of driving medium or the swinging motion of rotation plane have been restrained or avoided, make driving medium and vibrating diaphragm of speaker can do the linear piston vibration in ideal vertical direction, the frequency response of product is straighter, the bandwidth is wider, the distortion is lower. The vibrator utilizes the actuating unit to restrain or avoid unnecessary transverse vibration or swinging motion of a rotating plane of the mass block, utilizes the elastic mechanism to provide proper damping for the mass block in the vertical direction, and restrains unnecessary vibration in other directions, so that the mass block can perform ideal linear piston vibration in the vertical direction, a product generates linear frequency response with large amplitude and wide frequency, and a linear vibration motor product with simple structure and excellent performance can be provided.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed are illustrative and not restrictive. The scope of the application is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The driving mechanism is characterized by comprising an actuating unit and a transmission part, wherein the actuating unit comprises a driving part and a vibration coupling part, the driving part comprises a driving piece and an actuating piece connected with the driving piece, the driving piece comprises a fixed end and a free end which can move relative to the fixed end, the actuating piece can drive the free end to rotate relative to the fixed end through telescopic movement, and the vibration coupling part is connected between the free end and the transmission part and is used for absorbing transverse driving force and tangential driving force generated by the free end to the transmission part in the rotating process; the vibration coupling piece comprises a first frame, a second frame and an elastic piece, wherein the first frame and the second frame are oppositely arranged, the elastic piece is connected between the first frame and the second frame, the first frame is connected with the free end, the second frame is connected with the transmission piece, and the elastic piece absorbs the transverse driving force and the tangential driving force through deformation in different magnitudes in the transverse direction and the vertical direction.

2. The driving mechanism as recited in claim 1 wherein said elastic member comprises a first elastic member and a second elastic member, said first elastic member and said second elastic member are each arranged in a bent manner, two ends of said first elastic member are respectively connected to said first frame and said second frame, and two ends of said second elastic member are respectively connected to said first frame and said second frame.

3. The driving mechanism as claimed in claim 2, wherein the first frame comprises a first base, a first long side and a first short side connected to two ends of the first base, the second frame comprises a second base, a second long side and a second short side connected to two ends of the second base, the first base is opposite to the second base, the first long side corresponds to the second short side, and the first short side corresponds to the second long side; one end of the first elastic piece is connected to the tail end of the first short side, the other end of the first elastic piece is connected to the tail end of the second long side, one end of the second elastic piece is connected to the tail end of the second short side, and the other end of the second elastic piece is connected to the tail end of the first long side.

4. The driving mechanism as recited in claim 1 wherein a first connecting portion is formed at a side of said free end adjacent to said actuating plate, said first frame is fixedly connected to said first connecting portion, a second connecting portion is formed at a side of said bottom of said transmission member adjacent to said driving member, and said second frame is fixedly connected to said second connecting portion.

5. The drive mechanism of claim 4, wherein the first connecting portion is a step formed between the actuating plate and an end of the driving plate, and the second connecting portion is a notch.

6. The drive mechanism of claim 2, wherein the first spring has a width equal to or greater than twice its thickness and the second spring has a width equal to or greater than twice its thickness.

7. The drive mechanism of any one of claims 1-6, wherein the actuation plate is a piezoceramic fiber composite material comprising a composite sheet including a composite body and interdigitated electrodes disposed on two opposing surfaces of the composite body, the composite body including a plurality of piezoceramic fiber composite layers and a polymer composite layer filled between any adjacent two of the piezoceramic fiber composite layers.

8. The driving mechanism as claimed in claim 7, wherein the interdigital electrode is attached to the surface of the composite body by printing, electro-plating etching or magnetron sputtering, and the composite body is correspondingly deformed by stretching when an alternating electric signal is applied to the interdigital electrode.

9. The driving mechanism is characterized by comprising an actuating unit and a transmission part, wherein the actuating unit comprises a driving part and a vibration coupling part, the driving part comprises a driving piece and an actuating piece connected with the driving piece, the driving piece comprises a fixed end and a free end which can move relative to the fixed end, the actuating piece can drive the free end to rotate relative to the fixed end through telescopic movement, and the vibration coupling part is connected between the free end and the transmission part and is used for absorbing transverse driving force and tangential driving force generated by the free end to the transmission part in the rotating process; the vibration coupling piece comprises an arc piece, one end of the arc piece is connected to the free end, one side of the transmission piece is provided with an opening, the opening comprises an arc surface matched with the arc piece, the arc piece is in clearance fit in the opening, and the arc piece can rotate relative to the arc surface.

10. The drive mechanism of claim 9, wherein the opening further comprises a flat surface connected to each of the radial ends of the arcuate surface, and wherein the flat surface is tangential to the arcuate surface.

11. The drive mechanism according to any one of claims 9 to 10, wherein the actuation plate is a piezoceramic fiber composite material comprising a composite plate including a composite body and interdigital electrodes provided on two opposite surfaces of the composite body, the composite body including a plurality of piezoceramic fiber composite layers and a polymer composite layer filled between any adjacent two of the piezoceramic fiber composite layers.

12. The driving mechanism as claimed in claim 11, wherein the interdigital electrode is attached to the surface of the composite body by printing, electro-plating etching or magnetron sputtering, and the composite body is correspondingly deformed by stretching when an alternating electric signal is applied to the interdigital electrode.

13. A vibration device, characterized by comprising a vibration assembly and a driving mechanism according to any one of claims 1-12 for driving the vibration assembly to vibrate, wherein one end of the transmission member is connected to the vibration coupling member, and the other end is connected to the vibration assembly.

14. The vibration apparatus of claim 13, wherein the vibration apparatus is a speaker, the vibration assembly includes a diaphragm, and the driving member has one end connected to the vibration coupling member and the other end connected to the diaphragm.

15. The vibration apparatus of claim 13, wherein the vibration apparatus is a vibrator, the vibrator comprises a housing, the vibration assembly comprises a vibration wall of the housing, the transmission member comprises a mass having a mass, and the transmission member is coupled to the vibration wall.

16. The vibration apparatus of claim 15, wherein the driving mechanism is disposed in the housing, a fixing portion is disposed on a side wall of the housing, and the fixing portion is fixedly connected to the fixing portion.

17. A vibration apparatus according to claim 15, wherein there are two of said actuating units, and wherein two of said actuating units are disposed on opposite sides of said transmission member, respectively.

18. A vibration apparatus according to claim 15, wherein there are two of said transmission members, and wherein two of said transmission members are disposed on opposite sides of said actuating unit, respectively.

19. A vibration apparatus according to any one of claims 15 to 18, wherein the transmission member comprises a resilient mechanism by which the transmission member is connected to the vibration wall.

20. The vibration apparatus of claim 19, wherein the elastic means comprises a third frame and a fourth frame disposed opposite to each other and an elastic member connected between the third frame and the fourth frame, the third frame being connected to the vibration wall, the fourth frame being connected to the mass, the elastic member comprising a third elastic piece and a fourth elastic piece, the third elastic piece being elastically connected between one ends of the third frame and the fourth frame, the fourth elastic piece being elastically connected between the other ends of the third frame and the fourth frame.