WO2022082858A1

WO2022082858A1 - Sound production unit and loudspeaker

Info

Publication number: WO2022082858A1
Application number: PCT/CN2020/125905
Authority: WO
Inventors: 肖波; 孔晨亮; 令狐荣林; 章统
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-10-22
Filing date: 2020-11-02
Publication date: 2022-04-28
Also published as: CN213661937U

Abstract

The present utility model provides a sound production unit and a loudspeaker. The sound production unit comprises a basket, a magnetic circuit system, and a vibration system; the basket has an accommodating space; the magnetic circuit system is provided in the accommodating space; a magnetic gap is formed in the magnetic circuit system; the vibration system comprises a voice diaphragm, a voice coil, and a first frame; the voice diaphragm is fixed to the basket; the first frame comprises a body and at least two support arms provided on the body; the body surrounds the periphery of the voice coil; the support arms are bent from the body toward the inner side and extend into the magnetic gap; the side of the body away from the support arms is fixed to the voice diaphragm; the voice coil is fixed to the support arms and suspended in the magnetic gap by means of the support arms; the first frame further comprises a protrusion protrudingly provided on the body or/and the support arms. The protrusion is provided on the first frame, thereby improving the structural strength of the first frame and reducing the torsional deformation generated in the vibration process of the first frame, and thus improving the high-frequency sensitivity of the sound production unit.

Description

Sound unit and speaker

technical field

The utility model relates to the technical field of sound-generating devices, in particular to a sound-generating unit and a loudspeaker.

Background technique

The sounding unit includes a vibration system and a magnetic circuit system. Among them, the vibration system includes a voice membrane, a voice coil and a skeleton, the voice coil is connected with the voice membrane, and the voice membrane or/and the voice coil are installed through the skeleton; the magnetic circuit system is formed with a magnetic gap, and the voice coil on the voice membrane extends into the magnetic gap , to drive the sound membrane to vibrate under the action of the magnetic circuit system.

However, when the voice coil drives the sound film to vibrate under the action of the magnetic circuit system, the skeleton also vibrates, which easily causes the skeleton to deform during vibration, which in turn affects the high-frequency sensitivity of the sound-generating unit or speaker.

technical problem technical solutions

beneficial effect

The purpose of the present invention is to provide a sound-generating unit and a loudspeaker; the skeleton of the sound-generating unit is not easily deformed when vibrating; the speaker includes the aforementioned sound-generating unit, and the skeleton is not easily deformed when vibrating, thereby improving the high-frequency sensitivity of the loudspeaker.

One embodiment provides a sound-generating unit, comprising:

a pot holder, the pot holder has an accommodating space;

a magnetic circuit system, the magnetic circuit system is provided in the accommodating space, and the magnetic circuit system is formed with a magnetic gap; and

A vibration system, the vibration system includes a sound film, a voice coil and a first frame, the sound film is fixed with the basin frame, the first frame includes a main body and at least two support arms arranged on the main body, so The body is wound around the outer circumference of the voice coil, the support arm is bent inward from the body and extends into the magnetic gap, the side of the body away from the support arm and the sound membrane The voice coil is fixed to the support arm and suspended in the magnetic gap through the support arm, and the first frame further includes a boss protruding from the body or/and the support arm.

The voice coil is suspended in the magnetic gap through the support arm of the first skeleton, the voice coil vibrates under the action of the vibration system and drives the first skeleton to move, and the first skeleton drives the sound membrane to vibrate, thereby producing sound. The first skeleton is protruded with a boss, thereby improving the structural strength of the first skeleton, reducing or weakening the torsional deformation of the first skeleton during vibration, thereby improving the high-frequency sensitivity of the sounding unit.

The technical solution is further described below:

In one embodiment, the body is arranged in a ring shape, and the body includes a side wall facing the voice coil and spaced apart and a bottom wall facing the sound membrane and spaced apart. A first through hole is formed through the wall, the magnetic circuit system is at least partially exposed in the first through hole, and the boss is protruded from the bottom wall.

In one embodiment, a second through hole is formed through the side wall.

In one embodiment, the support arm includes a first arm extending from the bottom wall toward one side of the sound membrane and a second arm bent and extending from the first arm toward the voice coil. A loop is fixed to the first arm and the second arm.

In one embodiment, the vibration system further includes a centering support piece, the centering support piece is connected between the body and the basin frame, and the centering support piece is in contact with the bottom wall .

In one embodiment, the centering support piece includes an FPC matched with the bottom wall and an auxiliary diaphragm fixed on the FPC and away from the bottom wall, and the FPC includes a side connected to the bottom wall. A fixed first fixed part, a second fixed part fixed with the basin frame, and an elastic arm connected between the first fixed part and the second fixed part, the auxiliary diaphragm includes a An inner edge fixed by a fixing part, an outer edge sandwiched between the second fixing part and the basin frame, and an arc-shaped ring protruding in a direction away from the sound membrane.

In one embodiment, there are four support arms, and the four support arms are arranged around the inner side of the body at intervals.

In one embodiment, the basin frame includes an upper cover and a lower cover, the magnetic circuit system is sandwiched between the upper cover and the lower cover, and the lower cover includes a bottom plate and a bottom plate along the bottom plate. The side plate with the edge bent and extended, the diaphragm is arranged in a ring shape and is arranged around the outer periphery of the upper cover, and the side of the diaphragm away from the upper cover is fixed to the side plate.

In one embodiment, the magnetic circuit system includes a main magnet and a sub-magnet, both of which are fixed to the lower cover, and at least two of the sub-magnets are provided, and at least two of the sub-magnets are provided. The auxiliary magnets are arranged at intervals on the outer circumference of the main magnet, and the auxiliary magnets and the main magnets are arranged at intervals to form the magnetic gap.

Another embodiment provides a loudspeaker, including the sound-generating unit according to any one of the above technical solutions.

The above-mentioned loudspeaker adopts the aforementioned sound-generating unit, and the distortion and deformation of the first frame during the vibration process is suppressed, thereby improving the high-frequency sensitivity of the loudspeaker.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present invention, and the schematic embodiments of the present invention and descriptions thereof are used to explain the present invention and do not constitute an improper limitation of the present invention.

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Furthermore, the figures are not drawn to a 1:1 scale and the relative dimensions of the various elements are drawn in the figures by way of example only and not necessarily to true scale.

1 is a schematic diagram of the overall structure of a sound-emitting monomer in an embodiment of the present invention;

Fig. 2 is the overall cross-sectional structure diagram obtained by cutting along the A-A line of Fig. 1;

FIG. 3 is a top view of the overall structure of the sounding unit in the embodiment of the present invention;

FIG. 4 is an exploded view of the overall structure of the sounding monomer in the embodiment of the present utility model;

5 is a schematic diagram of the overall structure of the first skeleton in the embodiment of the present invention;

6 is a top view of the overall structure of the first skeleton in the embodiment of the present invention;

7 is a side view of the overall structure of the first frame in the embodiment of the present invention;

Fig. 8 is another perspective schematic diagram of the first skeleton in the embodiment of the present invention;

9 is a schematic diagram of the structure of the upper cover of the sound-generating unit in the embodiment of the present invention;

10 is a schematic diagram of the overall structure of the middle membrane of the middle sound membrane according to the embodiment of the present invention;

FIG. 11 is a schematic diagram of the overall structure of the second frame in the embodiment of the present invention.

Description of the attached drawings:

100, basin frame; 101, accommodating space; 110, upper cover; 111, fourth matching wall; 112, fifth matching wall; 120, lower cover; 200, magnetic circuit system; 210, main magnet; 220, auxiliary magnet; 230, magnetic gap; 300, vibration system; 310, first frame; 311, body; 3111, side wall; 31111, second through hole; 3112, bottom wall; 31121, first through hole; 312, support arm; 3121 , the first arm; 3122, the second arm; 313, the boss; 320, the second frame; 321, the second matching wall; 330, the sound membrane; 331, the middle membrane; 3311, the third matching wall; 332, the outer membrane ; 333, connecting ring; 340, voice coil; 350, FPC; 360, auxiliary diaphragm.

Embodiments of the present invention

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not subject to the specific embodiments disclosed below. limit.

Referring to FIGS. 1 to 4 , an embodiment provides a sound-generating unit, including a basin frame 100 , a magnetic circuit system 200 and a vibration system 300 .

The magnetic circuit system 200 and the vibration system 300 are both connected and matched with the basin frame 100 . During operation, the magnetic circuit system 200 drives the vibration system 300 to vibrate to produce sound.

specifically:

Please refer to FIG. 2 and FIG. 4 , the basin frame 100 has an accommodating space 101 , and both the magnetic circuit system 200 and the vibration system 300 can be located in the accommodating space 101 .

Referring to FIG. 2 and FIG. 4 , the magnetic circuit system 200 is disposed in the accommodating space 101 , and a magnetic gap 230 is formed in the magnetic circuit system 200 .

The magnetic circuit system 200 can be fixed with the basin frame 100, and the magnetic circuit system 200 is located in the accommodating space 101, and the voice coil 340 extends into the magnetic gap 230. During operation, the magnetic circuit system 200 moves the voice coil 340 through the force of the magnetic field, so as to make the voice coil 340 move. The voice coil 340 drives the sound film 330 to vibrate.

Referring to FIGS. 1 to 8 , the vibration system 300 includes a sound membrane 330 , a voice coil 340 and a first frame 310 , the sound membrane 330 is fixed to the basin frame 100 , and the first frame 310 includes a body 311 and a first frame 310 . At least two support arms 312 are provided on the body 311 , the body 311 is wound around the outer circumference of the voice coil 340 , and the support arms 312 are bent inward from the body 311 and extend to the magnetic gap 230 , the side of the body 311 away from the support arm 312 is fixed to the sound membrane 330 , the voice coil 340 is fixed to the support arm 312 and is suspended from the magnet through the support arm 312 . In the gap 230 , the first frame 310 further includes a boss 313 protruding from the body 311 or/and the support arm 312 .

In the embodiment shown in FIG. 1 to FIG. 4 , the vibration system 300 includes a sound film 330, a voice coil 340 and a first frame 310, the sound film 330 and the voice coil 340 are both fixed to the first frame 310, and the voice coil 340 extends into the magnetic In the gap 230, under the action of the vibration system 300, the voice coil 340 moves and drives the first frame 310 to move, so that the first frame 310 drives the sound membrane 330 to vibrate, thereby producing sound.

In the embodiment shown in FIGS. 7 and 8 , and with reference to FIGS. 1 to 4 , the first frame 310 includes a body 311 and a support arm 312 . The body 311 is wound around the outer circumference of the voice coil 340 , and the support arm 312 is arranged at the The main body 311 extends inwardly into the magnetic gap 230 from the main body 311 , so as to be connected and fixed with the voice coil 340 . One side of arm 312.

When the sound membrane 330 vibrates under the driving of the voice coil 340 and the first frame 310, the first frame 310 will be twisted and deformed. To solve this problem, as shown in FIG. 5 and FIG. 6, the first frame 310 is further provided with The boss 313 , the boss 313 can be provided on the main body 311 , the support arm 312 , or both the body 311 and the support arm 312 .

In this way, the voice coil 340 is suspended in the magnetic gap 230 by the support arm 312 of the first frame 310 , the voice coil 340 vibrates under the action of the vibration system 300 and drives the first frame 310 to move, and the first frame 310 drives the sound film 330 Vibration to produce sound, since the first frame 310 is protruded with a boss 313, the structural strength of the first frame 310 is improved, and the torsional deformation of the first frame 310 during vibration is reduced or weakened, thereby improving the sound production. High frequency sensitivity of the monomer.

Referring to FIGS. 5 to 8 , the body 311 is arranged in a ring shape, and the body 311 includes a side wall 3111 that is opposite to the voice coil 340 and arranged at intervals, and a side wall 3111 that is opposite to the sound membrane 330 and arranged at intervals The bottom wall 3112, a first through hole 31121 is formed through the bottom wall 3112, the magnetic circuit system 200 is at least partially exposed in the first through hole 31121, and the boss 313 is protruded from the bottom wall 3112 .

In the embodiment shown in FIG. 8 , the body 311 is generally arranged in a rectangular ring shape, and the body 311 includes a side wall 3111 and a bottom wall 3112 . Referring to FIGS. 1 to 5 , it can be known that the voice coil 340 is located on the inner periphery of the side wall 3111 . In the view shown in FIG. 8 , the bottom wall 3112 is disposed on the inner periphery of the lower end of the side wall 3111 , and a first through hole 31121 is formed in the middle of the bottom wall 3112 to expose a part of the magnetic circuit system 200 .

Referring to FIG. 8 , a second through hole 31111 is formed through the side wall 3111 .

The opening of the second through holes 31111 can reduce weight on the one hand, and facilitate gas circulation on the other hand.

Optionally, in the embodiment shown in FIG. 8 , the side wall 3111 is substantially surrounded by a rectangular ring structure, and one second through hole 31111 is provided on each of the four sides.

Referring to FIG. 8 , the support arm 312 includes a first arm 3121 extending from the bottom wall 3112 toward the sound membrane 330 and a second arm flexing and extending from the first arm 3121 toward the voice coil 340 3122, the voice coil 340 is fixed to the first arm 3121 and the second arm 3122.

From the perspective shown in FIG. 8 , and in combination with FIGS. 1 to 4 , it can be known that the voice coil 340 is connected and fixed to the inner side of the first arm 3121 and the lower side of the second arm 3122 .

Further, the second arm 3122 and the bottom arm are arranged in parallel, and the second arm 3122 is further provided with an arc-shaped notch at a position facing the inside.

Please refer to FIG. 2 and FIG. 4 , the vibration system 300 further includes a centering support piece, the centering support piece is connected between the main body 311 and the basin frame 100 , and the centering support piece is connected to the The bottom wall 3112 is fitted.

Specifically, the centering piece includes an FPC 350 matched with the bottom wall 3112 and an auxiliary diaphragm 360 fixed on the FPC 350 and away from the bottom wall 3112. The FPC 350 includes a A fixed first fixed part, a second fixed part fixed with the basin frame 100, and an elastic arm connected between the first fixed part and the second fixed part, the auxiliary diaphragm 360 includes a The inner edge fixed by the first fixing part, the outer edge sandwiched between the second fixing part and the basin frame 100 , and the arc-shaped ring protruding in the direction away from the sound membrane 330 .

In the embodiment shown in FIG. 2 and FIG. 3 , one auxiliary diaphragm 360 is provided on the left and right sides.

Referring to FIGS. 5 to 8 , there are four supporting arms 312 , and the four supporting arms 312 are arranged around the inner side of the main body 311 at intervals.

In the embodiment shown in FIG. 5 to FIG. 8 , there are four support arms 312 , and the four support arms 312 are evenly spaced and penetrate deep into the magnetic gap 230 to be connected with the voice coil 340 . When the voice coil 340 moves, the sound membrane 330 is further driven to vibrate through the first frame 310 .

Please refer to FIG. 5 to FIG. 8 , the basin frame 100 includes an upper cover 110 and a lower cover 120 , the magnetic circuit system 200 is sandwiched between the upper cover 110 and the lower cover 120 , and the lower cover 120 It includes a bottom plate and a side plate that is bent and extended along the edge of the bottom plate, the diaphragm is arranged in a ring shape and is arranged around the outer circumference of the upper cover 110, and the side of the diaphragm away from the upper cover 110 is connected to the The side panels are fixed.

In the embodiment shown in FIG. 5 to FIG. 8 , the basin frame 100 includes an upper cover 110 and a lower cover 120 , the upper cover 110 and the lower cover 120 cooperate to form a receiving space 101 , the magnetic circuit system 200 is fixed with the lower cover 120 , and the middle film 331 is arranged in a ring shape, and the inner edge of the middle membrane 331 is connected with the outer ring of the upper cover 110 .

Specifically, both the upper cover 110 and the lower cover 120 are arranged in a substantially rectangular shape, the size of the upper cover 110 is smaller than that of the lower cover 120 , the middle film 331 is arranged in a ring shape, the middle film 331 is arranged around the outer circumference of the upper cover 110 , and the middle film 331 and the outer membrane 332 are connected by a connecting ring 333 , and the outer edge of the outer membrane 332 is fixed with the side plate of the lower cover 120 .

Referring to FIGS. 2 to 4 , the sound membrane 330 includes an outer membrane 332 , a middle membrane 331 and a connecting ring 333 . The outer edge is fixed, the inner edge of the connecting ring 333 is fixed with the outer edge of the middle membrane 331 , and the connecting ring 333 is fixed with the side of the first frame 310 away from the bottom wall 3112 .

Please refer to FIG. 4 , the magnetic circuit system 200 includes a main magnet 210 and a secondary magnet 220 . Both the main magnet 210 and the secondary magnet 220 are fixed to the lower cover 120 , and the secondary magnet 220 is provided with at least two , at least two of the secondary magnets 220 are arranged at intervals on the outer circumference of the main magnet 210 , and the secondary magnets 220 and the main magnets 210 are arranged at intervals to form the magnetic gap 230 .

Referring to FIG. 4 , the magnetic circuit system 200 includes a main magnet 210 and a secondary magnet 220 . There are four secondary magnets 220 , and the four secondary magnets 220 are arranged around the outer periphery of the main magnet 210 . They are arranged at intervals to form a magnetic gap 230 , and the lower end of the voice coil 340 extends into the magnetic gap 230 .

Please refer to FIGS. 4 and 9 , four fourth matching walls 111 are disposed on the outer circumference of the upper cover 110 , and the four fourth matching walls 111 are arranged around the outer circumference of the upper cover 110 , and between adjacent fourth matching walls 111 set at intervals.

Referring to FIG. 10 , the inner ring of the middle membrane 331 is provided with a third matching wall 3311 , four third matching walls 3311 are provided, and the four third matching walls 3311 are arranged around the middle membrane 331 .

Referring to FIG. 4 and FIG. 11 , a second frame 320 is further provided between the middle film 331 and the upper cover 110 , and the second frame 320 is arranged in a ring shape.

Please refer to FIG. 11 , the second frame 320 is provided with second matching walls 321 , four second matching walls 321 are provided, and the four second matching walls 321 are arranged around the second frame 320 . The walls 3311 and the fourth matching walls 111 are provided in a one-to-one correspondence.

1 to 4, 9 to 11, the second frame 320 is annularly arranged, the second matching wall 321 is connected to the fourth matching wall 111, and the third matching wall 3311 is connected to the second matching wall 321, so that the The second frame 320 is connected to the outer periphery of the upper cover 110 , and the middle membrane 331 is connected to the outer periphery of the second frame 320 .

Referring to FIG. 9 , the upper cover 110 is further provided with a fifth matching wall 112 . The fifth matching wall 112 is disposed on the fourth matching wall 111 and extends horizontally toward the outer side of the upper cover 110 . The fifth matching wall 112 has four matching walls 112 . and one-to-one correspondence with the fourth matching walls 111 .

Please refer to FIG. 2 and FIG. 4 , there are four auxiliary magnets 220 , and the four fifth matching walls 112 are in one-to-one correspondence with the four auxiliary magnets 220 .

As shown in FIG. 4 , the lower wall surface of the fifth matching wall 112 is matched with the upper surface of the auxiliary magnet 220 , and an avoidance gap is formed between the adjacent fifth matching walls 112 , so that the supporting arm 312 of the first frame 310 It is connected to the voice coil 340 by avoiding the gap.

Another embodiment also provides a loudspeaker, comprising the sound-generating unit according to any one of the above embodiments.

The loudspeaker adopts the aforementioned sound-generating unit, and the distortion and deformation of the first frame 310 during the vibration process is suppressed, thereby improving the high-frequency sensitivity of the loudspeaker.

Specifically, the speaker includes a housing and the aforementioned sound-generating unit, the sound-generating unit is located inside the housing, and the housing is provided with a sound outlet, and the sound produced by the generating unit is transmitted to the outside of the housing through the sound outlet.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims

A sounding monomer, characterized in that it comprises:

a pot holder, the pot holder has an accommodating space;

a magnetic circuit system, the magnetic circuit system is provided in the accommodating space, the magnetic circuit system is formed with a magnetic gap; and

A vibration system, the vibration system includes a sound film, a voice coil and a first frame, the sound film is fixed with the basin frame, the first frame includes a main body and at least two support arms arranged on the main body, so The body is wound around the outer circumference of the voice coil, the support arm is bent inward from the body and extends into the magnetic gap, the side of the body away from the support arm and the sound membrane The voice coil is fixed to the support arm and suspended in the magnetic gap through the support arm, and the first frame further includes a boss protruding from the body or/and the support arm.
The sound-generating unit according to claim 1, wherein the body is arranged in a ring shape, and the body comprises a side wall facing and spaced apart from the voice coil, and a side wall facing and spaced apart from the sound membrane. The bottom wall is provided, a first through hole is formed through the bottom wall, the magnetic circuit system is at least partially exposed in the first through hole, and the boss is protruded from the bottom wall.
The sound-generating unit according to claim 2, wherein a second through hole is formed through the side wall.
The sound-generating unit according to claim 2, wherein the support arm comprises a first arm extending from the bottom wall toward the side of the sound membrane, and a first arm extending from the first arm toward the voice coil the second arm, the voice coil is fixed with the first arm and the second arm.
The sound-generating unit according to claim 2, wherein the vibration system further comprises a centering support piece, the centering support piece is connected between the main body and the basin frame, and the centering support The sheet is attached to the bottom wall.
The sound-generating unit according to claim 5, wherein the centering support piece comprises an FPC matched with the bottom wall and an auxiliary diaphragm fixed on the FPC and away from the bottom wall, so The FPC includes a first fixing part fixed with the bottom wall, a second fixing part fixed with the basin frame, and an elastic arm connected between the first fixing part and the second fixing part, the The auxiliary diaphragm includes an inner edge fixed with the first fixing part, an outer edge sandwiched between the second fixing part and the basin frame, and an arc-shaped ring protruding toward the direction away from the sound membrane .
The sound-generating unit according to claim 1, wherein there are four support arms, and the four support arms are arranged around the inner side of the body at intervals.
The sound-generating unit according to any one of claims 1-7, wherein the basin frame comprises an upper cover and a lower cover, and the magnetic circuit system is sandwiched between the upper cover and the lower cover , the lower cover includes a bottom plate and a side plate that is bent and extended along the edge of the bottom plate, the diaphragm is arranged in a ring shape and is arranged around the outer circumference of the upper cover, and the diaphragm is far away from the upper cover. One side is fixed with the side plate.
The sound-generating unit according to claim 8, wherein the magnetic circuit system comprises a main magnet and a sub-magnet, the main magnet and the sub-magnet are both fixed to the lower cover, and the sub-magnet is provided with At least two, at least two of the auxiliary magnets are arranged at intervals on the outer circumference of the main magnet, and the auxiliary magnets and the main magnets are arranged at intervals to form the magnetic gap.
A loudspeaker, characterized by comprising the sound-generating unit according to any one of claims 1-9.