CN116647798A - Loudspeaker - Google Patents

Abstract

The embodiment of the invention discloses a loudspeaker, wherein a plurality of groups of vibration balance parts are distributed around the central area of a vibrating diaphragm, so that the deformation of the vibrating diaphragm can be guided through the relative movement of a matching piece and a guide piece in the vibration of the vibrating diaphragm. The form of the vibrating diaphragm in vibration can be relatively stable, so that the distortion of the loudspeaker is reduced. Particularly when the diaphragm area is large or the vibration amplitude is large, the synchronous motion of the areas with a large distance on the diaphragm is difficult to ensure. Meanwhile, the diaphragm can also generate larger and irregular deformation, such as deformation perpendicular to the thickness direction of the diaphragm. Therefore, the consistency of the movement of each region of the vibrating diaphragm is ensured through the relative movement of the matching piece and the guide piece, so that the deformation of the vibrating diaphragm is more regular, and the sound quality of the loudspeaker is improved. Furthermore, the deformation of the vibrating diaphragm is guided by the vibration balancing part, so that the movement of the voice coil in the magnetic gap is more stable, and the swing of the voice coil in the magnetic gap is reduced or even avoided in the reciprocating movement of the voice coil.

Description

Loudspeaker

Technical Field

The present disclosure relates to a speaker, and particularly to a speaker with a vibrating diaphragm balance structure.

Background

In an electrodynamic loudspeaker, the reciprocating motion of the voice coil can drive the vibrating diaphragm to vibrate, so that the vibrating diaphragm generates sound waves. The stability of vibrating diaphragm vibration in this in-process can produce direct influence to the tone quality of speaker. Particularly, when the area of the diaphragm is large or the amplitude of the diaphragm is large, it is difficult to ensure the consistency of the motion of each area of the diaphragm, so that the audio frequency generated by the loudspeaker is distorted. How to reduce the distortion of the speaker audio becomes a problem to be solved.

Disclosure of Invention

In view of this, the embodiment of the invention provides a speaker, which uses a plurality of groups of vibration balancing parts to guide the movement of the vibrating diaphragm, so that each region of the vibrating diaphragm has higher consistency in the vibration process, thereby reducing the audio distortion.

According to a first aspect of an embodiment of the present invention, there is provided a speaker including:

a vibrating diaphragm;

the voice coil is fixedly connected with the central area of the vibrating diaphragm;

the body is fixedly connected with the edge of the vibrating diaphragm and provided with a magnetic gap, and the voice coil is at least partially positioned in the magnetic gap; and

the vibration balance part comprises guide pieces and matching pieces, wherein the guide pieces and the matching pieces are arranged in pairs, the matching pieces are slidably sleeved on the guide pieces, one of the matching pieces and the guide pieces is arranged on the body, and the other one of the matching pieces and the guide pieces is arranged on the vibrating diaphragm.

Further, when the voice coil is in a vibrating state, the matching piece reciprocates relative to the guide piece.

Further, the guide piece is in a column shape, one end of the guide piece, which is far away from the vibrating diaphragm, is fixedly connected with the body, the matching piece is a sleeve, and one end of the sleeve, which is far away from the body, is fixedly connected with the vibrating diaphragm;

and when the vibrating diaphragm is in a static state, one end of the guide piece, which is far away from the body, penetrates through the sleeve and is spaced from the vibrating diaphragm.

Further, the body is provided with a first mounting surface and a second mounting surface, the first mounting surface is fixedly connected with the edge of the vibrating diaphragm, the second mounting surface is recessed from one side of the first mounting surface, which is far away from the vibrating diaphragm, one end of the guide piece is fixedly connected with the body through the second mounting surface, and the other end of the guide piece is separated from the first mounting surface by a distance;

the sleeve is spaced from the second mounting surface when the diaphragm is in a rest state.

Further, the diaphragm comprises a plurality of balance areas, and the plurality of balance areas are distributed around the central area of the diaphragm and are connected with the plurality of matching pieces in a one-to-one correspondence.

Further, the diaphragm further includes:

the central area is connected with the voice coil;

the ring-folding area surrounds the central area and bends towards the side surface of the vibrating diaphragm, the inner edge of the ring-folding area is connected with the central area, and the outer edge of the ring-folding area is connected with the plurality of balance areas; and

the outer edge region extends along the side edge of the folded ring region away from the central region and the side edge of the balanced region away from the folded ring region, and the vibrating diaphragm is fixedly connected with the body through the outer edge region.

Further, the cross section of the central area in the thickness direction is a round rectangle;

the plurality of balancing areas are four balancing areas, and the four balancing areas are respectively in one-to-one correspondence with four fillets of the fillet rectangle.

Further, the ring folding zone comprises four straight line sections and four bending sections in the extending direction;

the widths of the four straight line segments are consistent and correspond to the four sides of the round corner rectangle respectively, and the widths of the four curved segments are consistent and correspond to the four round corners of the round corner rectangle and the four balancing areas one by one respectively.

Further, the bending section comprises a first arc edge and a second arc edge, the first arc edge is adjacent to the balance area, the second arc edge is adjacent to the central area, and the radian of the first arc edge is smaller than that of the second arc edge;

the straight line section comprises a first straight edge, and two ends of the first arc edge are respectively connected with the two first straight edges;

the balance area is correspondingly connected with one first arc edge and two adjacent first straight edges at the same time.

Further, the outer edge region comprises four third arc edges corresponding to the four balance regions, and the third arc edges are circular arcs surrounding the balance regions;

in the thickness direction of the vibrating diaphragm, the center of the circle where the third arc edge is located coincides with the corresponding bending section.

Further, the plurality of groups of vibration balance parts are four groups of vibration balance parts, and the connecting lines of the two opposite groups of vibration balance parts pass through the center point of the vibrating diaphragm;

the vibrating diaphragm includes:

the cross section of the central area in the thickness direction is a round rectangle, and four groups of vibration balance parts are distributed in mirror symmetry relative to the middle point of the side edge of the round rectangle.

Further, the body includes:

the magnetic circuit system forms a magnetic gap; and

the mounting frame is provided with four mounting surfaces and is distributed around the mounting windows, and the first mounting surface surrounds the mounting windows and the second mounting surface;

the four second mounting surfaces are recessed by the first mounting surface to form a containing groove, the matching piece is at least partially positioned in the containing groove, the magnetic circuit system is fixedly connected with the mounting frame through the mounting window, and the magnetic gap is communicated with the containing groove.

Further, the mounting frame comprises a frame body, the frame body is provided with a first side surface, the mounting window is recessed from the first side surface to the side far away from the vibrating diaphragm, four accommodating grooves surround the frame body, the first side surface is positioned between the first mounting surface and the second mounting surface, the mounting window is provided with four first inner walls and four second inner walls, and the four accommodating grooves respectively correspond to the four second inner walls;

the magnetic circuit system includes:

the magnetic cover comprises a bottom plate and four vertical plates, and the four vertical plates are arranged at intervals and are convexly arranged on a plate surface of the bottom plate; and

the central magnetic conduction part is arranged on the bottom plate and forms magnetic gaps with the four vertical plates;

the magnetic shield is arranged on the mounting window, the four vertical plates are respectively attached to the four first inner walls, and the second inner walls are positioned between the two adjacent vertical plates.

Further, the accommodation groove includes:

the plane side wall and the cambered surface side wall which is opposite to the plane side wall and is connected with each other are close to one side of the second inner wall corresponding to the accommodating groove and are parallel to the second inner wall.

Further, the mounting window penetrates through the frame body;

the bottom plate comprises a central plate and four positioning plates extending laterally towards the central plate, and the positioning plates and the vertical plates are alternately arranged along the edge of the central plate;

the frame body is provided with a second side surface which is away from the first side surface, the second side surface is convexly arranged on one side of the body, which is away from the vibrating diaphragm, the frame body is provided with four notches, and the notches are recessed from the second side surface to the first side surface;

the magnetic shield is arranged on the mounting window, the four positioning plates are respectively clamped in the four notches, the plate surface of the central plate, which is away from the central magnetic conduction part, is flush with the second side surface, and one end of the vertical plate, which is away from the bottom plate, is flush with the first side surface.

Further, the sleeve is made of aluminum. According to the loudspeaker provided by the embodiment of the invention, the plurality of groups of vibration balance parts are distributed around the central area of the vibrating diaphragm, so that the deformation of the vibrating diaphragm can be guided through the relative movement of the matching piece and the guide piece in the vibration of the vibrating diaphragm. The form of the vibrating diaphragm in vibration can be relatively stable, so that the distortion of the loudspeaker is reduced. Particularly when the diaphragm area is large or the vibration amplitude is large, the synchronous motion of the areas with a large distance on the diaphragm is difficult to ensure. Meanwhile, the diaphragm can also generate larger and irregular deformation, such as deformation perpendicular to the thickness direction of the diaphragm.

Therefore, the consistency of the movement of each region of the vibrating diaphragm is ensured through the relative movement of the matching piece and the guide piece, so that the deformation of the vibrating diaphragm is more regular, and the sound quality of the loudspeaker is improved. Furthermore, the deformation of the vibrating diaphragm is guided by the vibration balancing part, so that the movement of the voice coil in the magnetic gap is more stable, and the swing of the voice coil in the magnetic gap is reduced or even avoided in the reciprocating movement of the voice coil.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of one side of a speaker according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the structure of the other side of the speaker according to the embodiment of the present invention;

fig. 3 is an exploded view of a speaker according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a body and vibration balance portion of an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view at A-A of FIG. 3;

fig. 6 is an enlarged partial schematic view of a speaker according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the form of the diaphragm in different states according to the embodiment of the present invention.

Reference numerals illustrate:

1-a vibrating diaphragm;

11-equilibrium zone;

12-a central region; 13-a tuck-loop region;

131-bending the segment; 1311—a first arc edge; 1312-a second arc edge;

132-straight line segment; 1321-first straight edge;

14-an outer edge region; 141-a third arc edge;

2-a body;

21-a first mounting surface;

22-a second mounting surface;

23-mounting rack; 231-mounting a window; 2311-a first inner wall; 2312-a second inner wall;

232-a containing groove; 2321-planar sidewalls; 2322-cambered surface side walls;

233-a frame; 2331-first side; 2332-a second side; 2333-notch;

3-a vibration balancing part;

31-mating member; 32-a guide;

4-voice coil;

5-a magnetic circuit system;

51-magnetic gap;

52-magnetic shield; 521-a bottom plate; 5211-center panel; 5212-locating plate; 522-vertical plates; 53-a central magnetically permeable portion; 531-magnetic conduction piece; 532-magnetic member.

Detailed Description

The present invention is described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. The present invention will be fully understood by those skilled in the art without the details described herein. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the invention.

Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.

Unless the context clearly requires otherwise, the words "comprise," "comprising," and the like throughout the application are to be construed as including but not being exclusive or exhaustive; that is, it is the meaning of "including but not limited to".

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 and 2 are schematic structural views of a speaker in different directions. In fig. 1 the diaphragm 1 is in the top position of the body 2. The bottom region of the body 2 is shown in fig. 2, which shows a part of the magnetic circuit system 5 in a cutaway view.

Fig. 3 is an exploded schematic view of a speaker. Fig. 4 is a schematic sectional view of the body 2 and the vibration balance 3. In both figures, the vibration balance portions 3 are provided at the peripheral position of the diaphragm 1 and are substantially symmetrically distributed.

Fig. 5 is a schematic cross-sectional view at A-A in fig. 3. The width of the folded-over region 13 in the left part of the figure is greater than the right side, i.e. the distance L1 is greater than the distance L2.

Fig. 6 is an enlarged partial schematic view of a speaker. The figure shows the loudspeaker in a position corresponding to one of the vibration balances 3. Wherein the left side view shows the outline of the vibration balance 3, the body 2 and the magnetic circuit 5 with thick solid lines, and the outline of the diaphragm 1 with broken lines. The right-hand drawing shows the outline of the curved section 131 and its corresponding outer edge region 14 in bold solid lines.

In some embodiments, as shown in fig. 1 to 6, the speaker of the present embodiment includes a diaphragm 1, a voice coil 4, a body 2, and a plurality of sets of vibration balances 3. The voice coil 4 is fixedly connected with the central area of the vibrating diaphragm 1. The body 2 is fixedly connected with the edge of the vibrating diaphragm 1 and is provided with a magnetic gap 51, and the voice coil 4 is at least partially positioned in the magnetic gap 51. A plurality of sets of vibration balance parts 3 are located between the edge of the diaphragm 1 and the voice coil 4 and around the center region of the diaphragm 1, and the vibration balance parts 3 include guide members 32 and mating members 31 arranged in pairs. The matching piece 31 is slidably sleeved on the guide piece 32, one of the matching piece 31 and the guide piece 32 is arranged on the body 2, and the other is arranged on the vibrating diaphragm 1. The mating member 31 reciprocates with respect to the guide member 32 in a state where the diaphragm 1 is in a preset vibration state.

Specifically, the relative movement of the mating member 31 and the guide member 32 in the vibration balance portion 3 in the present embodiment may be configured to be always in a relative movement state during the vibration of the diaphragm 1. Or only when a specific sound wave is emitted from the speaker. For example, when the vibration film 1 is in a state of large vibration amplitude or high vibration frequency of the vibration film 1, the vibration film 1 drives the vibration balance part 3 to move. That is, when the vibration amplitude of the diaphragm 1 is small or the vibration frequency of the diaphragm 1 is low, the vibration balance 3 is not excited by the vibration of the diaphragm 1, so that the fitting 31 and the guide 32 remain in a relatively stationary state.

It is easy to understand that the deformation of the diaphragm 1 caused by the driving of the voice coil 4 includes various movement forms such as piston vibration, radial vibration or circumferential vibration. For example, when the diaphragm 1 is large, a position on the diaphragm 1 farther from the voice coil 4 is driven later by the voice coil 4, and a position nearer to the voice coil 4 is driven earlier by the voice coil 4, resulting in inconsistent vibration (i.e., radial vibration) of the respective areas of the diaphragm 1. For another example, when the hardness of each region of the diaphragm 1 is different, the deformation of the diaphragm 1 cannot be unified (i.e., circumferential vibration). For another example, when the vibration frequency of the speaker is high, the diaphragm 1 may generate a dividing motion. And the higher the frequency, the more pronounced the segmentation motion. Particularly, at the transition position between the edge of the diaphragm 1 and the middle area of the diaphragm 1, as the vibration frequency increases, the diaphragm 1 becomes more and more difficult to maintain the original shape, and more wrinkles are generated.

All of the above conditions can cause the diaphragm 1 to generate various vibration modes, which aggravates the distortion of the loudspeaker. Thus, the present embodiment sets the vibration balance portion 3 between the edge of the diaphragm 1 and the position of the diaphragm 1 where the voice coil 4 is provided. Meanwhile, the moving direction of the fitting 31 coincides with the thickness direction of the diaphragm 1. By guiding the deformation of the diaphragm 1 by the vibration balance 3, the occurrence of the above-mentioned situation can be reduced or even avoided.

In summary, in the speaker of the present embodiment, the plurality of sets of vibration balancing portions 3 are disposed around the central area of the diaphragm 1, so that the deformation of the diaphragm 1 can be guided by the relative movement of the matching element 31 and the guiding element 32 during the vibration of the diaphragm 1. So that the form of the diaphragm 1 in vibration can be relatively stable to reduce distortion of the speaker. Particularly, when the area of the diaphragm 1 is large or the vibration amplitude is large, it is difficult to ensure synchronous movement in the area of the diaphragm 1 which is far away from each other. At the same time, the diaphragm 1 also generates large and irregular deformations, such as deformations perpendicular to the thickness direction of the diaphragm 1. Therefore, the consistency of the movement of each region of the diaphragm 1 is ensured through the relative movement of the matching piece 31 and the guide piece 32, so that the deformation of the diaphragm 1 is more regular, and the sound quality of the loudspeaker is improved. Furthermore, the deformation of the diaphragm 1 is guided by the vibration balance portion 3, so that the movement of the voice coil 4 in the magnetic gap 51 can be further stabilized, and the swing of the voice coil 4 in the magnetic gap 51 during the reciprocating movement of the voice coil 4 can be reduced or even avoided.

In some embodiments, as shown in fig. 1-6, the guide member 32 is cylindrical, and an end of the guide member 32 away from the diaphragm 1 is fixedly connected to the body 2. The fitting piece 31 is a sleeve, and one end of the sleeve away from the body 2 is fixedly connected with the vibrating diaphragm 1. In the static state of the diaphragm 1, one end of the guide piece 32 far away from the body 2 is penetrated in the sleeve and is spaced from the diaphragm 1.

In other embodiments, the guiding element 32 is in a cylindrical shape, at least one guiding protrusion (not shown) is provided on the outer peripheral side of the guiding element 32, and the matching element 31 has a guiding groove (not shown) corresponding to the guiding protrusion, and the guiding groove is slidably connected with the guiding protrusion, so as to provide a guiding fixing structure for the matching element 31 and the guiding element 32 to be basically slidably sleeved outside, and meanwhile, the consistency of the movement of each area of the vibrating diaphragm 1 can be more stable and ensured, so that the deformation of the vibrating diaphragm 1 is more regular.

In a particular form shown in fig. 5, the distance L3 is the distance between the guide 32 and the diaphragm 1. In this form, the diaphragm 1 is in a free state, i.e. not driven by the voice coil 4, and the edge of the diaphragm 1 is fixedly connected with the body 2. The inner region of the edge of the diaphragm 1 is fixedly connected with the mating member 31. The fitting 31 is lifted by the diaphragm 1 while the diaphragm 1 in this position is in a flat state. The material of the diaphragm 1 can be selected by a person skilled in the art, so that the diaphragm 1 is prevented from being depressed downward by the influence of the fitting 31. When the vibrating diaphragm 1 vibrates, the vibrating diaphragm 1 can drive the matching piece 31 to move up and down, and the distance L3 can avoid the top of the guide piece 32 to contact with the vibrating diaphragm 1 when the vibrating diaphragm 1 moves downwards.

In some embodiments, as shown in fig. 1 to 6, the body 2 is provided with a first mounting surface 21 and a second mounting surface 22, the first mounting surface 21 is fixedly connected with the edge of the diaphragm 1, the second mounting surface 22 is recessed from the first mounting surface 21 to a side far away from the diaphragm 1, one end of the guide member 32 is fixedly connected with the body 2 through the second mounting surface 22, and the other end is spaced from the first mounting surface 21 by a distance. The sleeve is spaced from the second mounting surface 22 in a rest state of the diaphragm 1.

In one particular form, shown in fig. 5, the guide 32 is shown with a distance L4 from the top of the guide member to the first mounting surface 21. The distance L4 is equal to the distance L3. Meanwhile, the matching piece 31 is pulled by the vibrating diaphragm 1, and the bottom of the matching piece is in a suspended state, namely, a distance L5. When the diaphragm 1 deforms downward, the distance L5 can avoid the bottom of the fitting 31 from colliding with the second mounting surface 22, so that the loudspeaker generates noise.

In some embodiments, as shown in fig. 1-7, the diaphragm 1 includes a plurality of balancing areas 11, and the plurality of balancing areas 11 are disposed around a central area of the diaphragm 1 and are connected in one-to-one correspondence with a plurality of mating members 31. In this embodiment, the diaphragm 1 is connected with the matching piece 31 through the balancing area 11, and when the matching piece 31 moves up and down, the deformation direction of the central area of the diaphragm 1 can be guided through the balancing area 11, so that the diaphragm moves in the form of piston vibration as much as possible, and the distortion of the diaphragm 1 during vibration is reduced to the maximum extent.

Fig. 7 is a schematic diagram of the form of the diaphragm 1 in different states. The states IVa, IVb, IVc and IVd are shown. The profile of the counterpart 31 and of the part-body 2 is shown in dashed lines in the state IVa and in the state IVb. Wherein the diaphragm 1 in state IVa is in a stationary state, i.e. the loudspeaker is in an inactive state. The loudspeaker in the state IVb is in a preset working state, and the vibrating diaphragm 1 is in a preset vibration state under the drive of the voice coil 4. In this state, the diaphragm 1 drives the fitting 31 to move upward. In the figure, an arrow a1 is a vibration direction of the diaphragm 1, and the diaphragm 1 moves upward in a similar manner when deformed downward, but in an opposite direction, and will not be described again. In contrast, in the state ivc and the state ivd, the fitting 31 is not provided on the diaphragm 1. The state ivc corresponds to the state iva, the left side is a curved section 131, and the right side is a straight section 132. The left and right sides in the state iv d are both curved sections 131.

In some embodiments, as shown in fig. 1-7, the diaphragm 1 further includes a central region 12, a rim region 13, and an outer edge region 14. The central region 12 is connected to the voice coil 4. The rim region 13 surrounds the central region 12 and is curved towards the sides of the diaphragm 1, the inner edge of the rim region 13 being connected to the central region 12 and the outer edge being connected to the plurality of balancing regions 11. The outer edge region 14 extends along the side edge of the annular region 13 remote from the central region 12 and the side edge of the balancing region 11 remote from the annular region 13, and the diaphragm 1 is fixedly connected with the body 2 through the outer edge region 14.

It will be readily appreciated that the hinge region 13 of the present embodiment is used to create elastic deformation. On the one hand, the central area 12 can vibrate under the drive of the voice coil 4 through the change of the bending amplitude of the bending ring area 13. On the other hand, the bellows region 13 can further align the voice coil 4 with the center point of the magnetic gap 51 during the reciprocation. On the other hand, the bellows region 13 may also provide damping for the diaphragm 1 to reduce vibrations transmitted from the body 2 to the diaphragm 1 due to the interaction of the voice coil 4 with the magnetic gap 51.

Thus, on the one hand, as shown by the state IVa, the state IVb and the arrow a3 in FIG. 7, the balance area 11 is disposed outside the ring folding area 13 in this embodiment, and when the central area 12 moves upward, the balance area 11 can also move upward synchronously, so that the balance area 11 can move upward in cooperation with the central area 12, and the deformation generated by the ring folding area 13 is reduced. At the same time, the folds of the ring-folding area 13 after the diaphragm 1 is used for a long time can be reduced or even avoided. The life of the hinge region 13 is increased.

On the other hand, as shown in fig. 7 by the state ivb, the state ivd, and the arrow a2 and the broken line ive, the bending amplitude of the bending ring region 13 changes during the deformation. At the same time, a change in the horizontal position between the central zone 12 and the outer zone 14 is also caused. Particularly, when the width of the ring-folded region 13 is large or the vibration amplitude of the diaphragm 1 is large, the center region 12 moves to one side of the diaphragm 1. Further, the position of the voice coil 4 in the magnetic gap 51 is also changed, and the vibration of the diaphragm 1 is distorted. Under the mutual matching of the matching piece 31 and the guide piece 32, the guide piece 32 limits the horizontal movement of the matching piece 31, and further, the deformation of the folded ring area 13 in the horizontal direction is limited through the balance area 11, so that the central area 12 can stably generate the plug vibration. At the same time, the accuracy of the relative position of the voice coil 4 and the magnetic gap 51 is also ensured. Furthermore, the vibration balancing part 3 guides the movement of the vibrating diaphragm 1, and a person skilled in the art can select soft materials such as nylon or PEEK to manufacture the vibrating diaphragm 1, so that the vibrating diaphragm 1 has enough vibration amplitude, small inertia and mechanical strength of the vibrating diaphragm 1.

On the other hand, the vibration balance part 3 between the outer edge region 14 and the folded ring region 13 can limit the vibration conducted from the body 2 to the vibrating diaphragm 1 within a certain range, so as to avoid direct conduction to the central region 12.

In some embodiments, as shown in fig. 1-6, the cross-section of the central region 12 in the thickness direction is rounded rectangular. The plurality of balancing areas 11 are four balancing areas 11, and the four balancing areas 11 are respectively in one-to-one correspondence with four fillets of the filleted rectangle.

The central area 12 of the embodiment is a rounded rectangle, which can increase the layout area of the central area 12 and facilitate the layout of other parts of the electronic device. But the dimensions of the rounded rectangular diaphragm 1 in the direction of extension are not uniform. The distance on the diagonal is the greatest (as indicated by the dashed line iii in fig. 4). Therefore, during the vibration of the diaphragm 1, the distortion generated by the diaphragm 1 in this direction is also large. In this embodiment, the four balance areas 11 are respectively disposed at corresponding positions of the rounded rectangular corners, so as to ensure the stability of the deformation of the diaphragm 1 to the maximum extent.

Specifically, as shown in fig. 6, the voice coil 4 is fixedly connected to the outer edge of the center section 12. That is, the voice coil 4 is fixedly connected with the connection position of the ring-folded region 13 on the central region 12, so that the layout area of the central region 12 is increased, and the sound quality of the loudspeaker is improved.

In some embodiments, as shown in fig. 1-7, the tuck-loop region 13 includes four straight segments 132 and four curved segments 131 in the direction of extension. The four straight line segments 132 have the same width and correspond to the four sides of the rounded rectangle, respectively, and the four curved segments 131 have the same width and correspond to the four rounded corners of the rounded rectangle and the four balancing areas 11, respectively, one to one.

In this embodiment, the bending zone 13 is located outside the central zone 12, and the bending section 131 is located between the balancing zone 11 and the central zone 12. The deformation of the bending section 131 is guided and compensated by the balancing area 11, so that the deformation of the bending ring area 13 is more regular.

In some embodiments, as shown in fig. 1-7, curved segment 131 includes a first arcuate edge 1311 and a second arcuate edge 1312, first arcuate edge 1311 being adjacent to balance region 11, second arcuate edge 1312 being adjacent to center region 12, and the arc of first arcuate edge 1311 being less than the arc of second arcuate edge 1312. The straight line segment 132 includes a first straight edge 1321, and two ends of the first arc edge 1311 are respectively connected to two first straight edges 1321. The balancing area 11 is correspondingly connected with one first arc edge 1311 and two adjacent first straight edges 1321 at the same time.

As shown by the dashed lines vb in fig. 6, the dashed lines vb are tangent to the two first straight edges 1321, respectively. That is, the width of the curved section 131 of the present embodiment is greater than the width of the straight section 132. Therefore, the four straight sections 132 in this embodiment are in a parallel state, so that the position of the central region 12 in the direction perpendicular to the thickness direction of the diaphragm 1 can be limited to the maximum extent during the deformation of the diaphragm 1. However, as shown by the distances L1 and L2 in fig. 5 and the state iv c in fig. 7, the width of the folded ring region 13 at the connection position of the curved section 131 and the straight section 132 varies, so that the stress in each direction of the central region 12 is not balanced. When the diaphragm 1 vibrates, the central region 12 is caused to tilt to one side. Therefore, in this embodiment, the balance area 11 surrounds the end positions of the bending section 131 and the straight line section 132 connected to the bending section 131 at the same time, so that the deformation direction of the bending section 131 is limited by the balance area 11 during the process of the piston vibration of the central area 12, and the stress balance of the diaphragm 1 is ensured.

Further, as shown in fig. 6, the outer edge region 14 includes four third arcuate edges 141 corresponding to the four balance regions 11, and the third arcuate edges 141 are circular arcs around the balance regions 11. Meanwhile, in the thickness direction of the diaphragm 1, the center of the circle where the third arc edge 141 is located coincides with the corresponding curved section 131.

Specifically, the first mounting surface 21 is a strip-shaped surface including four arcuate segments and four extension segments connected between the arcuate segments. The four third arcuate edges 141 overlap the four arcuate segments, respectively, such that the balancing area 11 corresponds to the second mounting surface 22. When the diaphragm 1 vibrates, the bending section 131 deforms. At this time, the curved segment 131 can uniformly transmit the displacement perpendicular to the thickness direction of the balance area 11 to the third arc 141 with the center as the start point. Therefore, the stress condition of the transition position of the bending section 131 and the straight line section 132 is optimized, so that the stress in all directions of the central area 12 is more uniform.

In some embodiments, as shown in fig. 1-4, the plurality of sets of vibration balances 3 are four sets of vibration balances 3. Wherein, the connecting lines of the two opposite groups of vibration balance parts 3 pass through the center point of the vibrating diaphragm 1 (shown by a broken line III in fig. 4). The diaphragm 1 includes a central region 12, the cross section of the central region 12 in the thickness direction is a rounded rectangle, and four groups of vibration balance parts 3 are distributed in mirror symmetry with respect to the midpoints of the sides of the rounded rectangle (as shown by a dotted line I and a dotted line II in fig. 4).

In this embodiment, the lengths of two adjacent straight edges of the rounded rectangle are different, so that the distance from each vibration balance part 3 to the center point of the vibrating diaphragm 1 is the same in this embodiment. While maintaining symmetry of the vibration balance 3 in mirror image to avoid tilting or bending of the central region 12 to one side during vibration.

In some embodiments, as shown in fig. 1-6, the body 2 includes a magnetic circuit 5 and a mounting bracket 23. The magnetic circuit system 5 is used to form a magnetic gap 51. The mounting frame 23 is provided with a mounting window 231. The second mounting surface 22 is four in number and is disposed around the mounting window 231, and the first mounting surface 21 surrounds the mounting window 231 and the second mounting surface 22. The four second mounting surfaces 22 are recessed from the first mounting surface 21 to form a containing groove 232, the matching piece 31 is at least partially positioned in the containing groove 232, the magnetic circuit system 5 is fixedly connected with the mounting frame 23 through the mounting window 231, and the magnetic gap 51 is communicated with the containing groove 232.

The arrows as in fig. 4 are the flow direction of the air flowing between the different accommodating grooves 232 and between the accommodating grooves 232 and the magnetic gap 51. During deformation of the diaphragm 1, the mating element 31 slides relative to the guide element 32. For this reason, the accommodating grooves 232 are provided to communicate with the magnetic circuit 5, so that it is possible to prevent the four accommodating grooves 232 and the magnetic gap 51 from generating a pressure difference due to a change in volume.

In some embodiments, as shown in fig. 1-6, the mounting frame 23 includes a frame 233, the frame 233 is provided with a first side 2331, the mounting window 231 is recessed from the first side 2331 toward a side away from the diaphragm 1, four receiving grooves 232 surround the frame 233, and the first side 2331 is located between the first mounting surface 21 and the second mounting surface 22. The mounting window 231 is provided with four first inner walls 2311 and four second inner walls 2312, and the four receiving grooves 232 correspond to the four second inner walls 2312, respectively. The magnetic circuit 5 includes a magnetic shield 52 and a central magnetically permeable portion 53. The magnetic shield 52 includes a bottom plate 521 and four vertical plates 522, and the four vertical plates 522 are disposed at intervals and are protruded on a plate surface of the bottom plate 521. The central magnetically conductive portion 53 is provided on the bottom plate 521 and forms a magnetic gap 51 with the four standing plates 522. The magnetic cover 52 is mounted on the mounting window 231, the four vertical plates 522 are respectively attached to the four first inner walls 2311, and the second inner wall 2312 is located between two adjacent vertical plates 522.

Specifically, the central magnetically conductive portion 53 includes a magnetically conductive member 531 and a magnetic member 532 stacked. The magnetic conductive member 531 is disposed on top of the magnetic member 532, so that the magnetic field generated by the magnetic circuit system 5 is more uniform.

The accommodating grooves 232 of the present embodiment correspond to the regions between the two standing plates 522, respectively, that is, the standing plates 522 are not provided at the positions on the bottom plate 521 corresponding to the vibration balance section 3, so that the distance between the accommodating grooves 232 and the mounting window 231 is reduced, so that the vibration balance section 3 can be provided at a position closer to the hinge region 13. Thus, the structure of the speaker can be configured more compactly.

Specifically, the sleeve is made of aluminum. In this embodiment, the sleeve is made of aluminum material, so as to reduce the weight of the matching piece 31 and avoid the influence on the deformation of the diaphragm 1 due to the weight of the matching piece 31. At the same time, the metallic material does not absorb energy in the vibrations of the diaphragm 1, avoiding changing the acoustic damping of the loudspeaker.

Further, the accommodating groove 232 includes a planar sidewall 2321 and an arc sidewall 2322 disposed opposite to the planar sidewall 2321 and connected to each other. The planar sidewall 2321 is close to one side of the second inner wall 2312 corresponding to the accommodating groove 232 and is parallel to the second inner wall 2312. The distance between the planar side wall 2321 and the second inner wall 2312 ensures that the frame 233 has sufficient mechanical strength to carry the magnetic shield 52, so that the receiving groove 232 can be disposed as close to the mounting window 231 as possible. Meanwhile, the region formed by the curved side wall 2322 and the planar side wall 2321 can also be used to accommodate the mating piece 31. When parameters such as the size or weight of the mating member 31 need to be adjusted, the area formed by the accommodating groove 232 can be adapted to more types of mating members 31.

In some embodiments, as shown in fig. 1-6, the mounting window 231 extends through the frame 233. The bottom plate 521 includes a central plate 5211 and four positioning plates 5212 extending laterally toward the central plate 5211. The retainer plates 5212 and the risers 522 are alternately arranged along the edges of the central plate 5211. The frame 233 is provided with a second side surface 2332 deviating from the first side surface 2331, the second side surface 2332 is convexly arranged on one side of the body 2 deviating from the vibrating diaphragm 1, the frame 233 is provided with four notches 2333, and the notches 2333 are recessed from the second side surface 2332 to the first side surface 2331. The magnetic cover 52 is mounted on the mounting window 231, the four positioning plates 5212 are respectively clamped in the four notches 2333, the plate surface of the central plate 5211, which is away from the central magnetic conductive part 53, is flush with the second side surface 2332, and one end of the vertical plate 522, which is away from the bottom plate 521, is flush with the first side surface 2331.

The present embodiment can position the position between the magnetic cover 52 and the mounting window 231 by the positioning plate 5212. The position accuracy of the magnetic circuit system 5 and the horizontal direction of the body 2 is ensured, and the position accuracy of the magnetic circuit system 5 and the depth direction of the installation window 231 is also ensured.

In an alternative implementation, the speaker in the above embodiment may be applied to an electronic device. Such electronic devices include, but are not limited to, cell phones, electronic watches, or notebooks.

In the electronic device of the embodiment of the invention, a plurality of groups of vibration balance parts 3 on the loudspeaker are distributed around the central area of the vibrating diaphragm 1, so that the deformation of the vibrating diaphragm 1 can be guided through the relative movement of the matching piece 31 and the guide piece 32 in the vibration of the vibrating diaphragm 1. So that the form of the diaphragm 1 in vibration can be relatively stable to reduce distortion of the speaker. Particularly, when the area of the diaphragm 1 is large or the vibration amplitude is large, it is difficult to ensure synchronous movement in the area of the diaphragm 1 which is far away from each other. At the same time, the diaphragm 1 also generates large and irregular deformations, such as deformations perpendicular to the thickness direction of the diaphragm 1. Therefore, the consistency of the movement of each region of the diaphragm 1 is ensured through the relative movement of the matching piece 31 and the guide piece 32, so that the deformation of the diaphragm 1 is more regular, and the sound quality of the loudspeaker is improved. Furthermore, the deformation of the diaphragm 1 is guided by the vibration balance portion 3, so that the movement of the voice coil 4 in the magnetic gap 51 can be further stabilized, and the swing of the voice coil 4 in the magnetic gap 51 during the reciprocating movement of the voice coil 4 can be reduced or even avoided.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (16)

1. A loudspeaker, the loudspeaker comprising:

a diaphragm (1);

the voice coil (4) is fixedly connected with the central area of the vibrating diaphragm (1);

the body (2) is fixedly connected with the edge of the vibrating diaphragm (1) and is provided with a magnetic gap (51), and the voice coil (4) is at least partially positioned in the magnetic gap (51); and

multiunit vibration balance portion (3), be located between the edge of vibrating diaphragm (1) with voice coil loudspeaker voice coil (4) and around the central zone of vibrating diaphragm (1), vibration balance portion (3) are including guide (32) and mating piece (31) that set up in pairs, mating piece (31) are configured to slidable cover locate guide (32), mating piece (31) with one of guide (32) set up in body (2), another set up in vibrating diaphragm (1).

2. A loudspeaker according to claim 1, wherein the counterpart (31) is reciprocally movable with respect to the guide (32) in a state in which the voice coil is in vibration with the diaphragm (1).

3. Loudspeaker according to claim 2, wherein the guide member (32) is cylindrical, one end of the guide member (32) away from the diaphragm (1) is fixedly connected with the body (2), the mating member (31) is a sleeve, and one end of the sleeve away from the body (2) is fixedly connected with the diaphragm (1);

and when the vibrating diaphragm (1) is in a static state, one end, far away from the body (2), of the guide piece (32) penetrates through the sleeve and is spaced from the vibrating diaphragm (1).

4. A loudspeaker according to claim 3, wherein the body (2) is provided with a first mounting surface (21) and a second mounting surface (22), the first mounting surface (21) is fixedly connected with the edge of the diaphragm (1), the second mounting surface (22) is recessed from the first mounting surface (21) to a side far away from the diaphragm (1), one end of the guide member (32) is fixedly connected with the body (2) through the second mounting surface (22), and the other end is separated from the first mounting surface (21) by a distance;

the diaphragm (1) is in a static state, and the sleeve is spaced from the second mounting surface (22).

5. Loudspeaker according to claim 1, wherein the diaphragm (1) comprises a plurality of balancing areas (11), wherein a plurality of balancing areas (11) are arranged around a central area of the diaphragm (1) and are connected in a one-to-one correspondence with a plurality of mating elements (31).

6. The loudspeaker according to claim 5, wherein the diaphragm (1) further comprises:

a central region (12) connected to the voice coil (4);

a folded ring region (13), wherein the folded ring region (13) surrounds the central region (12) and bends towards the side surface of the vibrating diaphragm, the inner edge of the folded ring region (13) is connected with the central region (12) and the outer edge is connected with a plurality of balance regions (11); and

the outer edge region (14) extends along the side edge of the folded ring region (13) away from the central region (12) and the side edge of the balance region (11) away from the folded ring region (13), and the vibrating diaphragm (1) is fixedly connected with the body (2) through the outer edge region (14).

7. Loudspeaker according to claim 6, wherein the cross-section in the thickness direction of the central zone (12) is rounded rectangular;

the balance areas (11) are four, and the four balance areas (11) are respectively in one-to-one correspondence with the four fillets of the filleted rectangle.

8. The loudspeaker according to claim 7, characterized in that the gimbal region (13) comprises four straight line segments (132) and four curved segments (131) in the extension direction;

the four straight line sections (132) are consistent in width and correspond to four sides of the round corner rectangle respectively, and the four curved sections (131) are consistent in width and correspond to four round corners of the round corner rectangle and four balance areas (11) one by one respectively.

9. The loudspeaker of claim 8, wherein the curved section (131) comprises a first arc edge (1311) and a second arc edge (1312), the first arc edge (1311) being adjacent to the balancing area (11), the second arc edge (1312) being adjacent to the central area (12), and the arc of the first arc edge (1311) being smaller than the arc of the second arc edge (1312);

the straight line section (132) comprises a first straight edge (1321), and two ends of the first arc edge (1311) are respectively connected with the two first straight edges (1321);

the balance area (11) is correspondingly connected with one first arc edge (1311) and two adjacent first straight edges (1321) at the same time.

10. The loudspeaker according to claim 9, wherein the outer edge region (14) comprises four third arc edges (141) corresponding to four of the balancing areas (11), the third arc edges (141) being circular arcs around the balancing areas (11);

in the thickness direction of the vibrating diaphragm (1), the center of the circle where the third arc edge (141) is located coincides with the corresponding bending section (131).

11. Loudspeaker according to claim 1, wherein the plurality of sets of vibration balancing parts (3) is four sets of vibration balancing parts (3), and the connecting lines of two opposite sets of vibration balancing parts (3) pass through the center point of the diaphragm (1);

the diaphragm (1) comprises:

the cross section of the central area (12) in the thickness direction is a round rectangle, and four groups of vibration balance parts (3) are distributed in mirror symmetry relative to the midpoints of the sides of the round rectangle.

12. The loudspeaker according to claim 4, wherein the body (2) comprises:

a magnetic circuit system (5), the magnetic circuit system (5) forming the magnetic gap (51); and

the mounting frame (23) is provided with four mounting surfaces (22) and is arranged around the mounting windows (231), and the first mounting surface (21) surrounds the mounting windows (231) and the second mounting surface (22);

four second installation faces (22) are recessed by the first installation faces (21) to form accommodating grooves (232), the matching piece (31) is at least partially located in the accommodating grooves (232), the magnetic circuit system (5) is fixedly connected with the mounting frame (23) through the mounting window (231), and the magnetic gap (51) is communicated with the accommodating grooves (232).

13. The loudspeaker of claim 12, wherein the mounting frame (23) includes a frame body (233), the frame body (233) is provided with a first side surface (2331), the mounting window (231) is recessed from the first side surface (2331) to a side away from the diaphragm (1), four accommodating grooves (232) surround the frame body (233) and the first side surface (2331) is located between the first mounting surface (21) and the second mounting surface (22), the mounting window (231) is provided with four first inner walls (2311) and four second inner walls (2312), and the four accommodating grooves (232) respectively correspond to the four second inner walls (2312);

the magnetic circuit system (5) includes:

the magnetic cover (52) comprises a bottom plate (521) and four vertical plates (522), and the four vertical plates (522) are arranged at intervals and are convexly arranged on one plate surface of the bottom plate (521); and

a central magnetic conduction portion (53) provided on the bottom plate (521) and forming the magnetic gap (51) with the four vertical plates (522);

the magnetic cover (52) is installed on the installation window (231), the four vertical plates (522) are respectively attached to the four first inner walls (2311), and the second inner walls (2312) are located between two adjacent vertical plates (522).

14. The speaker of claim 13, wherein the receiving groove (232) comprises:

the plane side wall (2321) and with the cambered surface lateral wall (2322) that plane lateral wall (2321) set up relatively and be connected each other, plane lateral wall (2321) be close to holding groove (232) corresponds one side of second inner wall (2312) and with second inner wall (2312) are parallel.

15. The speaker of claim 13, wherein the mounting window (231) extends through the frame (233);

the bottom plate (521) includes a central plate (5211) and four positioning plates (5212) extending laterally toward the central plate (5211), the positioning plates (5212) and the risers (522) being alternately arranged along an edge of the central plate (5211);

the frame body (233) is provided with a second side surface (2332) deviating from the first side surface (2331), the second side surface (2332) is convexly arranged on one side of the body (2) deviating from the vibrating diaphragm (1), the frame body (233) is provided with four notches (2333), and the notches (2333) are recessed from the second side surface (2332) to the first side surface (2331);

the magnetic shield (52) is installed in the installation window (231), four locating plates (5212) are respectively clamped in four notches (2333), the center plate (5211) deviates from the plate surface of the center magnetic conduction portion (53) and is flush with the second side surface (2332), and one end of the vertical plate (522) away from the bottom plate (521) is flush with the first side surface (2331).

16. The loudspeaker of any of claims 3-4, wherein the sleeve comprises aluminum.