Diaphragm unit and loudspeaker said diaphragm unit

Abstract

A diaphragm unit and a loudspeaker having said diaphragm unit. The diaphragm unit comprises: a diaphragm body (10), which is capable of vibrating in a first direction, and the diaphragm body (10) being provided with mounting portions (11); a shake prevention mechanism, which comprises a plurality of shake prevention assemblies, the plurality of shake prevention assemblies all being connected to the mounting portions (11), and the shake prevention assemblies (20) comprising first movable portions (21) and second movable portions (22); one end of each first movable portion (21) is pivotally connected to a mounting portion (11), the other end of said first movable portion (21) is pivotally connected to a second movable portion (22), and said second movable portion (22) can move back and forth in a direction normal to a first direction (D1). Compared to the prior art, by the provision of the plurality of shake prevention assemblies (20), the diaphragm body (10) can be stably supported, which effectively prevents shaking and swinging motions of the diaphragm body (10); the stability and reliability of the diaphragm body (10) are improved, the occurrence of unwanted noise is prevented, and the acoustic performance of a loudspeaker is effectively improved.

Description

A diaphragm unit and a loudspeaker having the same Technical Field

[0001] The present invention relates to the technical field of electroacoustic conversion, and in particular to a diaphragm unit and a loudspeaker having the diaphragm unit. Background Art

[0002] Unwanted motion of a passive radiator, or loudspeaker diaphragm, is a major cause of distortion. The challenge in miniature transducer design is that the spider structure that effectively reduces swaying motion in larger loudspeakers is difficult to manufacture, so alternative structures are needed. Technical issues

[0003] An object of the present invention is to provide a diaphragm unit and a loudspeaker having the diaphragm unit, so as to solve the technical problems in the prior art. Technical Solutions

[0004] In a first aspect, the present invention provides a diaphragm unit, comprising:

[0005] A diaphragm body, capable of vibrating in a first direction, wherein an edge of the diaphragm body has a mounting portion, an mounting space is formed in the mounting portion, and a projection of the mounting space in the first direction completely falls on the diaphragm body;

[0006] An anti-sway mechanism is arranged in the installation space, and the anti-sway mechanism includes multiple anti-sway components, and the multiple anti-sway components are all connected to the installation part. The anti-sway component includes a first movable part and a second movable part, and the first movable part and the second movable part are arranged in sequence along the normal direction of the first direction. The first movable part is closer to the installation part than the second movable part. One end of the first movable part is pivotally connected to the installation part, and the other end of the first movable part is pivotally connected to the second movable part. The second movable part can move back and forth along the normal direction of the first direction.

[0007] In the diaphragm unit as described above, preferably, the anti-sway assembly further includes a first hinge and a second hinge, wherein:

[0008] One end of the first hinge is connected to the mounting portion, the other end of the first hinge is connected to the first movable portion, and an axis of the first hinge extends in a direction perpendicular to the first direction;

[0009] One end of the second hinge is connected to an end of the first movable part away from the first hinge, the other end of the second hinge is connected to the second movable part, and an axis of the second hinge extends in a direction perpendicular to the first direction.

[0010] A diaphragm unit as described above, wherein preferably, the anti-sway assembly also includes an elastic member and an anchoring portion, the anchoring portion is farther away from the first movable portion than the second movable portion, the elastic member is located between the second movable portion and the anchoring portion, one end of the elastic member abuts against an end of the second movable portion away from the first movable portion, and the other end of the elastic member abuts against the anchoring portion.

[0011] In the diaphragm unit as described above, preferably, the anti-sway assembly further includes a first pivot seat, and the first pivot seat is provided on the mounting portion, wherein:

[0012] A connecting groove is provided in the second movable portion, and the connecting groove extends along the normal direction of the first direction;

[0013] The first movable part includes a first connecting shaft, a second connecting shaft and a third connecting shaft. The first connecting shaft is rotatably supported in the first pivot seat. The opposite ends of the second connecting shaft are respectively connected to the first connecting shaft and the third connecting shaft. The third connecting shaft is loosely fitted in the connecting groove.

[0014] In the diaphragm unit as described above, preferably, the anti-sway mechanism includes four anti-sway components, and the four anti-sway components are symmetrically arranged in pairs within the four edges of the mounting portion.

[0015] A diaphragm unit as described above, wherein, preferably, the anti-sway mechanism includes three anti-sway components, wherein two of the anti-sway components are symmetrically arranged on two opposite edges of the mounting portion, and the other anti-sway component is arranged on the diaphragm body, and the extension direction of this anti-sway component is perpendicular to the extension direction of the other two anti-sway components.

[0016] In a second aspect, the present invention provides a loudspeaker comprising an actuator and the aforementioned diaphragm unit, wherein the actuator is used to drive the diaphragm body in the diaphragm unit to vibrate.

[0017] In the loudspeaker as described above, preferably, one end of the actuator is provided on the base, and the other end of the actuator is provided on the diaphragm body.

[0018] In the loudspeaker as described above, preferably, two diaphragm bodies are provided, and the two diaphragm bodies are symmetrically arranged on opposite sides of the actuator.

[0019] In the loudspeaker as described above, preferably, one end of the actuator is provided on one of the diaphragm bodies, and the other end of the actuator is provided on the other diaphragm body.

[0020] In the loudspeaker as described above, preferably, one end of the actuator is provided on the second movable part of one anti-sway assembly, and the other end of the actuator is provided on the second movable part of the other anti-sway assembly.

[0021] In the loudspeaker as described above, preferably, a plurality of actuators are provided, the plurality of actuators correspond one-to-one to the plurality of anti-sway components, and the actuator is connected to an end of the second movable part away from the first movable part. Beneficial effects

[0022] Compared with the existing technology, the present invention can provide stable support for the diaphragm body by setting multiple anti-sway components, effectively preventing the diaphragm body from shaking and swaying, improving the stability and reliability of the diaphragm body, avoiding the occurrence of noise, and effectively improving the acoustic performance of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic structural diagram of a diaphragm unit of a first structure provided by the present invention;

[0024] FIG2 is a top view of a diaphragm unit of a first structure provided by the present invention;

[0025] FIG3 is a schematic structural diagram of an anti-sway assembly of a diaphragm unit of a first structure provided by the present invention;

[0026] FIG4 is a schematic structural diagram of a diaphragm unit of a second structure provided by the present invention;

[0027] FIG5 is a schematic structural diagram of a diaphragm unit of a third structure provided by the present invention;

[0028] FIG6 is a schematic diagram of a layout of the anti-sway mechanism provided by the present invention;

[0029] FIG7 is a schematic diagram of another layout of the anti-sway mechanism provided by the present invention;

[0030] FIG8 is a schematic structural diagram of a speaker of a first structure provided by the present invention;

[0031] FIG9 is a schematic structural diagram of a speaker having a second structure provided by the present invention;

[0032] FIG10 is a schematic structural diagram of a speaker having a third structure provided by the present invention;

[0033] FIG11 is a schematic structural diagram of a loudspeaker of the fourth structure provided by the present invention.

[0034] Description of reference numerals:

[0035] 10-diaphragm body, 11-installation part, 12-installation space;

[0036] 20 - Anti-sway assembly, 21 - First movable part, 211 - First connecting shaft, 212 - Second connecting shaft, 213 - Third connecting shaft, 22 - Second movable part, 23 - First hinge, 24 - Second hinge, 25 - Elastic member, 26 - First pivot seat, 27 - Connecting slot;

[0037] 30-actuator, 31-magnetic circuit assembly, 32-voice coil assembly, 33-first mass block, 34-second mass block, 35-piezoelectric actuator, 36-base;

[0038] 40-anchoring portion;

[0039] 50-fold ring;

[0040] 60-external frame;

[0041] D1-first direction;

[0042] D2-second direction;

[0043] D3-Third direction. Best Mode for Carrying Out the Invention

[0044] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0045] To better illustrate the structure of the diaphragm unit, the concepts of a first direction D1, a second direction D2, and a third direction D3 are used. The vibration direction of the diaphragm body 10 within the diaphragm unit is defined as the first direction D1. The second direction D2 and the third direction D3 are both perpendicular to the first direction D1, and the second direction D2 is perpendicular to the third direction D3. Together, the first direction D1, the second direction D2, and the third direction D3 constitute the three spatial axes of the coordinate system.

[0046] 1 to 7 , an embodiment of the present invention provides a diaphragm unit, including a diaphragm body 10 and an anti-sway mechanism, wherein:

[0047] The diaphragm body 10 can vibrate along the first direction D1. A mounting portion 11 is provided on the diaphragm body 10. The mounting portion 11 can be a part of the diaphragm body 10 or a frame provided on the edge of the diaphragm body 10. Preferably, the mounting portion 11 is a frame structure provided on the edge of the diaphragm body 10 to improve the structural strength. The mounting portion 11 protrudes from the surface of the diaphragm body 10 in the first direction D1 to form an installation space 12. The projection of the installation space 12 in the first direction D1 falls completely on the diaphragm body 10. This installation space 12 is used to accommodate the anti-shake mechanism, thereby reducing the space occupied by the diaphragm unit, which is conducive to further reducing the volume of the speaker.

[0048] The anti-sway mechanism includes multiple anti-sway components 20, which are arranged in the installation space 12. The multiple anti-sway components 20 are all connected to the installation part 11. In the embodiment provided in this application, the diaphragm body 10 is a cube structure, and the installation part 11 surrounding the edge of the diaphragm body 10 is also a cube frame structure.

[0049] In a feasible embodiment, as shown in Figure 6, the anti-sway mechanism includes four anti-sway components 20, and the four anti-sway components 20 are symmetrically arranged in pairs on the four edges of the mounting portion 11. The four evenly distributed anti-sway components 20 can achieve the optimal effect of amplitude debugging, better control the swinging motion in all directions, and further improve the acoustic performance of the speaker.

[0050] In another feasible embodiment, as shown in Figure 7, the anti-sway mechanism includes three anti-sway components 20, two of which are symmetrically arranged on two opposite edges of the mounting portion 11, and another anti-sway component 20 is arranged on the diaphragm body 10, and the extension direction of this anti-sway component 20 is perpendicular to the extension direction of the other two anti-sway components 20.

[0051] Those skilled in the art will appreciate that the number and distribution of the anti-sway components 20 in the anti-sway mechanism can be determined according to the actual shape of the diaphragm body 10 and the anti-sway requirement, and are not limited here.

[0052] In the embodiment provided in the present application, the anti-sway component 20 includes a first movable part 21 and a second movable part 22. The first movable part 21 and the second movable part 22 are arranged in sequence along the normal direction of the first direction D1. The first movable part 21 is closer to the mounting part 11 than the second movable part 22. One end of the first movable part 21 is pivotally connected to the mounting part 11, and the axis extension direction of this pivot is parallel to the second direction D2 or the third direction D3 to suppress the swing of the diaphragm body 10. The other end of the first movable part 21 is pivotally connected to the second movable part 22, and the axis extension direction of this pivot is parallel to the second direction D2 or the third direction D3. At the same time, the second movable part 22 can move horizontally back and forth along the normal direction of the first direction D1 (the second direction D2 or the third direction D3) to suppress the horizontal movement of the diaphragm body 10.

[0053] The above embodiment can provide stable support for the diaphragm body 10 by setting multiple anti-sway components 20, effectively preventing the diaphragm body 10 from shaking and swaying, improving the stability and reliability of the diaphragm body 10, avoiding the occurrence of noise, and effectively improving the acoustic performance of the speaker.

[0054] In a feasible embodiment, referring to FIG. 1 to FIG. 3 , the anti-sway assembly 20 further includes a first hinge 23 and a second hinge 24 , wherein:

[0055] One end of the first hinge 23 is connected to the mounting part 11, and the other end of the first hinge 23 is connected to the first movable part 21. The axis extension direction of the first hinge 23 is perpendicular to the first direction D1, and extends along the second direction D2 or the third direction D3 to suppress the swing of the diaphragm body 10. The structure of the first hinge 23 can refer to the conventional hinge structure in the prior art and will not be elaborated here. The number of first hinges 23 is preferably multiple, and the multiple first hinges 23 are distributed in sequence along the second direction D2 or the third direction D3 to improve the stability and reliability of the relative movement between the first movable part 21 and the mounting part 11.

[0056] One end of the second hinge 24 is connected to the second end of the first movable part 21, and the other end of the second hinge 24 is connected to the end of the second movable part 22 away from the first movable part 21. The axis extension direction of the second hinge 24 is perpendicular to the first direction D1, and extends along the second direction D2 or the third direction D3, so as to further suppress the swing of the diaphragm body 10. The structure of the second hinge 24 can refer to the conventional hinge structure in the prior art and will not be elaborated here. The number of the second hinges 24 is preferably multiple, and the multiple second hinges 24 are distributed in sequence along the second direction D2 or the third direction D3 to improve the stability and reliability of the relative movement between the first movable part 21 and the second movable part 22.

[0057] As shown in Figure 3, the anti-sway assembly 20 also includes an elastic member 25 and an anchoring portion 40. The anchoring portion 40 is farther away from the first movable portion 21 than the second movable portion 22. The elastic member 25 is located between the second movable portion 22 and the anchoring portion 40. The elastic member 25 provides a certain elastic compression space for the second movable portion 22 to move horizontally along the second direction D2 or the third direction D3. The elastic member 25 is preferably a leaf spring. One end of the elastic member 25 abuts against the end of the second movable portion 22 away from the first movable portion 21, and the other end of the elastic member 25 abuts against the anchoring portion 40. The anchoring portion 40 is an immovable component. When the second movable portion 22 is subjected to an external force, the second movable portion 22 moves a certain range along the second direction D2 or the third direction D3, thereby compressing the elastic member 25. The elastic member 25 accumulates elastic restoring force. When the external force on the second movable portion 22 is released, the elastic restoring force of the elastic member 25 is released, and the second movable portion 22 can return to its initial position.

[0058] Those skilled in the art will appreciate that the second movable portion 22 may also be slidably fitted in a bearing to achieve horizontal movement, which is more suitable for systems larger than the micro speaker and is not limited here.

[0059] In another feasible embodiment, which can be applied to larger-sized speakers or resonators, as shown in FIG. 4 , the anti-sway assembly 20 further includes a first pivot seat 26 , which is disposed on the mounting portion 11 . A bearing or a sleeve is disposed in the first pivot seat 26 , wherein:

[0060] A connecting groove 27 is defined in the second movable portion 22 . The connecting groove 27 is a strip-shaped groove. The connecting groove 27 extends along the normal direction of the first direction D1 to provide guidance and limiting functions.

[0061] The first movable part 21 includes a first connecting shaft 211, a second connecting shaft 212 and a third connecting shaft 213, which are preferably formed in an integral manner to improve the overall strength. There are two first connecting shafts 211 and two second connecting shafts 212, which are symmetrically arranged on opposite sides of the third connecting shaft 213. The first connecting shaft 211 is rotatably supported in the first pivot seat 26, and the opposite ends of the second connecting shaft 212 are respectively connected to the first connecting shaft 211 and the third connecting shaft 213, and the third connecting shaft 213 is clearance-fitted in the connecting groove 27.

[0062] In another feasible embodiment, as shown in Figure 5, two diaphragm bodies 10 are provided. This structure also moves the two sides of the diaphragm unit in a similar manner, thereby ensuring that the recoil is effectively eliminated, while also ensuring that changes in surround parameters that may occur due to manufacturing tolerances, temperature differences, etc. will not cause asymmetric movement. Specifically, the diaphragm bodies 10 are symmetrically arranged on opposite sides of the anti-sway mechanism. Each anti-sway component 20 is provided with two first movable parts 21 and one second movable part 22. The two first movable parts 21 are symmetrically arranged along the second direction D2 or the third direction D3. The two first movable parts 21 are respectively arranged corresponding to one diaphragm body 10. One end of the first movable part 21 is hinged to the mounting part 11, and the other end of the first movable part 21 is hinged to the second movable part 22. The two first movable parts 21 share one second movable part 22, thereby compressing the space occupied by the diaphragm unit and improving space utilization. A preset angle is formed between the two first movable parts 21. This preset angle can be determined according to actual needs and is not limited here.

[0063] Based on the diaphragm unit provided in the above embodiment, the present application also provides a loudspeaker, including an actuator 30 and the aforementioned diaphragm unit, the diaphragm unit is circumferentially connected with a folding ring 50, and the end of the folding ring 50 away from the diaphragm unit is connected to the outer frame 60, the folding ring 50 and the diaphragm unit are separate or integral, which is not limited here, the actuator 30 includes a fixed end and a driving end, the driving end is used to drive the diaphragm body 10 in the diaphragm unit to vibrate, the actuator 30 can adopt dynamic (moving coil), electromagnetic (moving armature or magnet), piezoelectric and other methods to drive the diaphragm body 10 to vibrate, wherein the anti-sway mechanism in the diaphragm unit can form a stable support for the diaphragm body 10, effectively preventing the shaking and swinging motion of the diaphragm body 10, improving the stability and reliability of the diaphragm body 10, avoiding the occurrence of noise, and effectively improving the acoustic performance of the loudspeaker.

[0064] In a first feasible embodiment, the fixed end of the actuator 30 is disposed on the base 36, and the driving end of the actuator 30 is disposed on the diaphragm body 10. Specifically, as shown in FIG8 , the actuator 30 includes a magnetic circuit assembly 31 and a voice coil assembly 32. The voice coil assembly 32 is disposed on the diaphragm body 10, and the magnetic circuit assembly 31 is disposed on the base 36 and opposite to the voice coil assembly 32. When the speaker is operating, the voice coil assembly 32, driven by an external driving signal, generates a changing magnetic field. This changing magnetic field interacts with the constant magnetic field of the magnetic circuit assembly 31, causing the diaphragm body 10 to vibrate and produce sound.

[0065] Those skilled in the art will appreciate that actuator 30 can also be a piezoelectric actuator 35, comprising a metal substrate and a pair of piezoelectric ceramic sheets attached to either side of the metal substrate. The piezoelectric ceramic sheets are connected to diaphragm body 10. The piezoelectric ceramic sheets have opposite polarization directions, causing one piezoelectric ceramic sheet to vibrate in expansion while the other piezoelectric ceramic sheet vibrates in contraction and bending, thereby generating vibration. The vibration of the piezoelectric ceramic sheets drives the diaphragm body 10 to vibrate, producing sound.

[0066] In a second feasible embodiment, as shown in FIG9 , two diaphragm bodies 10 are provided, and the two diaphragm bodies 10 are symmetrically arranged on opposite sides of the anti-sway mechanism. This structure also moves the two sides of the diaphragm unit in a similar manner, thereby ensuring that the recoil force is effectively eliminated, while also ensuring that changes in surround parameters that may occur due to manufacturing tolerances, temperature differences, etc. will not lead to asymmetric movement.

[0067] The fixed end of the actuator 30 is arranged on one diaphragm body 10, and the driving end of the actuator 30 is arranged on the other diaphragm body 10. Specifically, the actuator 30 includes a magnetic circuit assembly 31, a voice coil assembly 32 and a first mass block 33. The voice coil assembly 32 and the first mass block 33 are both arranged on one diaphragm body 10, and the magnetic circuit assembly 31 is arranged on the other diaphragm body 10, and is arranged opposite to the voice coil assembly 32. By setting the first mass block 33, the effective moving mass on both sides is equal, which further ensures that the recoil force is offset. Since the moving mass of this structure is inevitably relatively high, the structure is most suitable for subwoofer and subwoofer applications. An additional benefit of this embodiment is that the symmetrical diaphragm body 10 will also reduce the system's response to external mechanical forces, making the structure very suitable for high vibration environments, such as automotive use.

[0068] Those skilled in the art will appreciate that the actuator 30 may also be a piezoelectric actuator 35 , which is not limited here.

[0069] In a third feasible embodiment, the fixed end of the actuator 30 is arranged on the second movable part 22 of one anti-sway component 20, and the driving end of the actuator 30 is arranged on the second movable part 22 of the other anti-sway component 20. Specifically, as shown in Figure 10, the actuator 30 includes a magnetic circuit assembly 31, a voice coil assembly 32 and a second mass block 34. The voice coil assembly 32 and the second mass block 34 are both arranged on the second movable part 22 of one anti-sway component 20. By setting the second mass block 34, the effective moving mass on both sides is equal, which further ensures that the recoil force is offset. The magnetic circuit assembly 31 is arranged on the second movable part 22 of the other anti-sway component 20 and is arranged opposite to the voice coil assembly 32.

[0070] Under the action of an external driving signal, the voice coil assembly 32 induces a changing magnetic field, and an interaction force is generated between the changing magnetic field and the constant magnetic field of the magnetic circuit assembly 31, so that the force is transmitted to the diaphragm body 10 through the second movable part 22, the first movable part 21, and the mounting part 11 in sequence, causing the diaphragm body 10 to vibrate and make sound.

[0071] In this embodiment, two diaphragm bodies 10 may also be provided, and the two diaphragm bodies 10 are symmetrically arranged on opposite sides of the anti-sway mechanism, which is not limited here.

[0072] Those skilled in the art will appreciate that actuator 30 can also be a piezoelectric actuator 35, comprising a metal substrate and a pair of piezoelectric ceramic sheets attached to either side of the metal substrate. One piezoelectric ceramic sheet is connected to the second movable portion 22, while the other piezoelectric ceramic sheet is connected to the other movable portion. The piezoelectric ceramic sheets have opposite polarization directions, causing one piezoelectric ceramic sheet to undergo expansion vibration while the other piezoelectric ceramic sheet undergoes contraction and bending vibration, thereby generating vibration. The vibration of the piezoelectric ceramic sheets drives the diaphragm body 10 to vibrate and produce sound.

[0073] In a fourth feasible embodiment, as shown in Figure 11, there are multiple actuators 30, and the multiple actuators 30 correspond one-to-one to the multiple anti-sway components 20. The driving end of the actuator 30 is connected to the end of the second movable part 22 away from the first movable part 21. The actuator 30 is a piezoelectric actuator 35, or an electromagnetic actuator, etc. In this embodiment, there can also be two diaphragm bodies 10, and the two diaphragm bodies 10 are symmetrically arranged on opposite sides of the anti-sway mechanism, which is not limited here.

[0074] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A diaphragm unit, characterized in that, comprising: a diaphragm body that can vibrate in a first direction, an edge of the diaphragm body has a mounting portion, a mounting space is formed in the mounting portion, and a projection of the mounting space in the first direction completely falls on the diaphragm body; an anti-rocking mechanism disposed in the mounting space, the anti-rocking mechanism includes a plurality of anti-rocking components, the plurality of anti-rocking components are all connected to the mounting portion, the anti-rocking component includes a first movable portion and a second movable portion, the first movable portion and the second movable portion are sequentially arranged along the normal direction of the first direction, the first movable portion is closer to the mounting portion than the second movable portion, one end of the first movable portion is pivotally connected to the mounting portion, the other end of the first movable portion is pivotally connected to the second movable portion, and the second movable portion can reciprocally move along the normal direction of the first direction.

2. The diaphragm unit according to claim 1, characterized in that, the anti-rocking component further includes a first hinge and a second hinge, wherein: one end of the first hinge is connected to the mounting portion, the other end of the first hinge is connected to the first movable portion, and an extending direction of an axis of the first hinge is perpendicular to the first direction; one end of the second hinge is connected to the end of the first movable portion away from the first hinge, the other end of the second hinge is connected to the second movable portion, and an extending direction of an axis of the second hinge is perpendicular to the first direction.

3. The diaphragm unit according to claim 2, characterized in that, the anti-rocking component further includes an elastic member and an anchoring portion, the anchoring portion is farther from the first movable portion than the second movable portion, the elastic member is located between the second movable portion and the anchoring portion, one end of the elastic member abuts against the end of the second movable portion away from the first movable portion, and the other end of the elastic member abuts against the anchoring portion.

4. The diaphragm unit according to claim 1, characterized in that, the anti-rocking component further includes a first pivot seat disposed on the mounting portion, wherein: a connecting groove is provided in the second movable portion and extends along the normal direction of the first direction; the first movable portion includes a first connecting shaft, a second connecting shaft and a third connecting shaft, the first connecting shaft is rotatably supported in the first pivot seat, opposite ends of the second connecting shaft are respectively connected to the first connecting shaft and the third connecting shaft, and the third connecting shaft is in clearance fit with the connecting groove.

5. The diaphragm unit according to claim 1, characterized in that, the anti-rocking mechanism includes four of the anti-rocking components, and the four anti-rocking components are symmetrically arranged in four edges of the mounting portion in pairs.

6. The diaphragm unit according to claim 1, characterized in that, the anti-rocking mechanism includes three of the anti-rocking components, two of the anti-rocking components are symmetrically arranged on opposite two edges of the mounting portion, and another anti-rocking component is arranged on the diaphragm body, and an extending direction of this anti-rocking component is perpendicular to extending directions of the other two anti-rocking components.

7. A loudspeaker, characterized in that, Comprising an actuator and the diaphragm unit according to any one of claims 1-6, wherein the actuator is configured to drive the diaphragm body within the diaphragm unit to vibrate.

8. The loudspeaker according to claim 7, characterized in that one end of the actuator is disposed on the base, and the other end of the actuator is disposed on the diaphragm body.

9. The loudspeaker according to claim 7, characterized in that there are two diaphragm bodies, and the two diaphragm bodies are symmetrically disposed on opposite sides of the actuator.

10. The loudspeaker according to claim 9, characterized in that one end of the actuator is disposed on one of the diaphragm bodies, and the other end of the actuator is disposed on the other diaphragm body.

11. The loudspeaker according to claim 7 or 9, characterized in that one end of the actuator is disposed on the second movable part of one of the anti-rocking assemblies, and the other end of the actuator is disposed on the second movable part of the other anti-rocking assembly.

12. The loudspeaker according to claim 7 or 9, characterized in that there are multiple actuators, and the multiple actuators correspond to the multiple anti-rocking assemblies one by one, and the actuators are connected to the ends of the second movable parts far from the first movable parts.

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