WO2022000577A1

WO2022000577A1 - Loudspeaker

Info

Publication number: WO2022000577A1
Application number: PCT/CN2020/102435
Authority: WO
Inventors: 严绪东; 邵涛; 顾小江
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: 2020-07-02
Filing date: 2020-07-16
Publication date: 2022-01-06
Also published as: CN212519419U

Abstract

The present application provides a loudspeaker, comprising a basket, and a magnetic circuit system and a vibration system that are fixed to the basket. The basket comprises a bottom plate and a side plate; the vibration system comprises a vibration diaphragm assembly, a dome supported on the vibration diaphragm assembly, and a voice coil fixed to the side of the dome close to the magnetic circuit system; one end of the vibration diaphragm assembly is fixedly connected to the end of the side plate distant from the bottom plate, and the other end of the vibration diaphragm assembly is fixedly connected to the dome; the vibration diaphragm assembly comprises a first vibration diaphragm and a second vibration diaphragm that both are in the shape of a ring; the first vibration diaphragm and the second vibration diaphragm are stacked in a vibration direction; the first vibration diaphragm comprises a first mounting portion fixedly connected to the dome and a first connecting portion distant from the dome; the second vibration diaphragm comprises a second mounting portion fixedly connected to the side plate and a second connecting portion distant from the side plate; and the first connecting portion is fixedly connected to the second connecting portion. According to the vibration diaphragm assembly of the loudspeaker, an original integrated vibration diaphragm is replaced with the first vibration diaphragm and the second vibration diaphragm which are formed separately and then assembled, thus reducing the difficulty of forming the vibration diaphragm assembly.

Description

speaker

technical field

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

Background technique

A related art sound-generating device includes a vibration system and a magnetic circuit system. The vibration system usually includes a diaphragm, and the diaphragm is often made of rubber, silicone and other materials to be integrally formed, but the diaphragm is set on the peripheral side of the speaker, and its diaphragm is manufactured by integral molding, which is not suitable for rubber materials. Rubber materials are used. Difficult to form.

Therefore, it is necessary to provide a new speaker.

technical solutions

The purpose of the utility model is to provide a loudspeaker, which can reduce the difficulty of forming the diaphragm assembly on the basis of achieving the purpose of increasing the radiation area and the loudness of the speaker.

The technical scheme of the present utility model is as follows:

A loudspeaker, comprising a basin frame, a magnetic circuit system and a vibration system fixed to the basin frame, the basin frame comprising a bottom plate and a side plate bent and extended from the edge of the bottom plate to the vibration system, the vibration system It includes a diaphragm assembly for vibrating and sounding, a dome supported on the diaphragm assembly, and a voice coil fixed on one side of the dome close to the magnetic circuit system, one end of the diaphragm assembly is connected to the One end of the side plate away from the bottom plate is fixedly connected, and the other end of the diaphragm assembly is fixedly connected to the dome, and the dome, the diaphragm assembly and the basin frame together form a receiving cavity, The voice coil and the magnetic circuit system are accommodated in the accommodating cavity, and the diaphragm assembly includes a first diaphragm and a second diaphragm both in annular shape, the first diaphragm and the second diaphragm The vibrating membranes are stacked along the vibration direction, the first vibrating membrane includes a first mounting portion that is fixedly connected to the dome and a first connecting portion that is far away from the dome, and the second vibrating membrane includes a A second mounting portion that is fixedly connected to the board and a second connecting portion that is far away from the side plate, and the first connecting portion is fixedly connected to the second connecting portion.

As an improvement, the first connecting portion and the second connecting portion are bonded by glue.

As an improvement, the first diaphragm further includes a first arc-shaped portion connecting the first mounting portion and the first connecting portion, and the first arc-shaped portion is recessed toward the voice coil.

As an improvement, the first connecting portion extends horizontally from an end of the first arc-shaped portion away from the first mounting portion toward the voice coil.

As an improvement, the second diaphragm further includes a second arc-shaped portion connecting the second mounting portion and the second connecting portion, and the second arc-shaped portion is recessed toward the voice coil.

As an improvement, the second connecting portion extends horizontally from one end of the second arc-shaped portion away from the second mounting portion toward the voice coil.

As an improvement, the vibration system further includes an auxiliary diaphragm assembly supported on the basin frame, the auxiliary diaphragm assembly is arranged in the receiving cavity and connected to the dome, and the magnetic circuit system The voice coil is driven to drive the diaphragm assembly and the auxiliary diaphragm assembly to vibrate through the dome.

As an improvement, the basin frame further includes a support structure extending from the bottom plate toward the dome, the support structure including a first support portion and a second support portion spaced from the first support portion , the auxiliary diaphragm assembly includes a third diaphragm and a connector connecting the third diaphragm and the dome, the third diaphragm includes a first fixing part fixed with the connector, A folded ring portion is bent and extended from the peripheral edge of the first fixing portion, and a second fixed portion is bent and extended from the perimeter of the folded ring portion, and the second fixed portion spans the first support portion and the second support portion superior.

As an improvement, the magnetic circuit system includes a magnetic circuit unit, and the magnetic circuit unit includes a magnetic bowl fixed on the bottom plate, a magnetic steel located in the magnetic bowl to form a magnetic gap with the magnetic bowl and a pole core arranged on the magnetic steel, the voice coil is sleeved on the outer periphery of the magnetic steel, and is located between the magnetic bowl and the magnetic steel.

As an improvement, there are two voice coils and the two voice coils are spaced apart from each other, the magnetic circuit units are spaced in two groups, and each of the magnetic circuit units corresponds to one of the voice coils There are two groups of the auxiliary diaphragm components, each of which is arranged between the magnetic circuit unit and the side plate, and the support structure is provided with two groups, and two groups of the auxiliary diaphragm components are arranged. The diaphragm assemblies are supported on the two sets of support structures in a one-to-one correspondence.

As an improvement, the bottom plate is provided with a first through hole that communicates with the receiving cavity, the first through hole is disposed corresponding to the third diaphragm, and the first through hole is disposed in the first through hole. Between a support portion and the second support portion, the bottom plate is further provided with a second through hole communicating with the receiving cavity corresponding to the dome.

beneficial effect

The beneficial effect of the present utility model is that: the diaphragm assembly of the present utility model adopts the first diaphragm and the second diaphragm which are separately formed and reassembled to replace the original one-piece diaphragm. On the basis of the large radiation area and the purpose of increasing the loudness of the speaker, the difficulty of forming the diaphragm assembly is reduced. The first diaphragm and the second diaphragm are separately formed, and there are more types of materials that can be formed (for example, rubber, silicone, etc. can be used) material), the mass production is higher.

Description of drawings

Fig. 1 is the structural representation of the loudspeaker of the present utility model;

Fig. 2 is the sectional view along A-A of Fig. 1;

Fig. 3 is the sectional view along B-B of Fig. 1;

4 is an exploded view of the speaker of the present invention;

5 is a schematic structural diagram of a basin frame assembly of the present invention;

6 is a schematic structural diagram of a first vibrating membrane of the present invention;

7 is a schematic structural diagram of the second diaphragm of the present invention;

8 is an exploded view of the auxiliary diaphragm assembly of the present invention.

Reference number:

1. Speaker;

10, basin frame; 11, bottom plate; 111, first through hole; 112, second through hole; 12, side plate; 13, support structure; 131, first support part; 132, second support part;

20, magnetic circuit system; 21, magnetic circuit unit; 211, magnetic bowl; 212, magnetic steel; 213, pole core;

30, vibration system; 31, diaphragm assembly; 311, first diaphragm; 3111, first installation part; 3112, first connection part; 3113, first arc part; 312, second diaphragm; 3121, first Two installation parts; 3122, the second connection part; 3123, the second arc part; 32, the dome; 33, the auxiliary diaphragm assembly; 331, the third diaphragm; 3311, the first fixed part; 3312, the ring part ; 3313, the second fixed part; 332, the connector; 34, the voice coil.

40. Containment cavity.

Embodiments of the present invention

The present utility model will be further described below with reference to the accompanying drawings and embodiments.

It should be noted that all directional indications (such as up, down, left, right, front, back, inner, outer, top, bottom...) in the embodiments of the present invention are only used to explain the If the specific posture changes, the directional indication also changes accordingly.

It should also 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 intervening elements 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.

1-8, an embodiment of the present invention provides a loudspeaker 1, which includes a basin frame 10, a magnetic circuit system 20 and a vibration system 30 fixed to the basin frame 10, and the basin frame 10 includes a bottom plate 11 and a self-contained bottom plate. 11. The side plate 12 whose edge is bent and extended toward the vibration system 30. The vibration system 30 includes a diaphragm assembly 31 for vibrating and producing sound, a dome 32 supported on the diaphragm assembly 31, and a dome 32 fixed on the dome 32 close to the magnetic circuit system 20. On one side of the voice coil 34, the diaphragm assembly 31 is annular, one end of the diaphragm assembly 31 is fixedly connected to the end of the side plate 12 away from the bottom plate 11, the other end of the diaphragm assembly 31 is fixedly connected to the dome 32, and the dome 32 , the diaphragm assembly 31 and the basin frame 10 together form a receiving cavity 40, 34 the voice coil and the magnetic circuit system 20 are contained in the receiving cavity 40, and the diaphragm assembly 31 includes a first diaphragm 311 and a second ring. The vibrating membrane 312, the first vibrating membrane 311 and the second vibrating membrane 312 are stacked along the vibration direction, and the first vibrating membrane 311 includes a first mounting portion 3111 fixedly connected with the dome 32 and a first connecting portion 3112 away from the dome 32 , the second diaphragm 312 includes a second mounting portion 3121 fixedly connected with the side plate 12 and a second connecting portion 3122 away from the side plate 12 , and the first connecting portion 3112 is fixedly connected with the second connecting portion 3122 . When the voice coil 34 is supplied with an alternating current, under the action of the magnetic field of the magnetic circuit system 20, the voice coil 34 will be moved up and down by an alternating driving force, resulting in an alternating motion. Under the action of the driving force, the first vibration The diaphragm 311 and the second diaphragm 312 vibrate in the direction of the driving force, thereby generating sound. During the vibration, the first diaphragm 311 and the second diaphragm 312 jointly participate in the vibration.

The diaphragm assembly 31 of this embodiment adopts the first diaphragm 311 and the second diaphragm 312 which are formed and reassembled separately to replace the original one-piece diaphragm. In this way, the diaphragm assembly 31 can increase the radiation area and On the basis of the purpose of increasing the loudness of the speaker, the difficulty of forming the diaphragm assembly 31 is reduced. The first diaphragm 311 and the second diaphragm 312 are separately formed, and there are more types of materials that can be formed (for example, materials such as rubber, silicone, etc. can be used) ), the mass production is higher.

Moreover, the loudspeaker 1 of the present embodiment improves the connection reliability between the dome 32 and the first diaphragm 311 by designing the first mounting portion 3111 , and at the same time, it is convenient for the dome 32 to better transmit for driving the first diaphragm 311 The vibration force is given to the first diaphragm 311; the speaker 1 of this embodiment improves the connection reliability between the first diaphragm 311 and the second diaphragm 312 by designing the first connection part 3112 and the second connection part 3122, and at the same time, it is convenient to The first diaphragm 311 can better transmit the force used to drive the second diaphragm 312 to vibrate to the second diaphragm 312; the speaker 1 of this embodiment improves the relationship between the second diaphragm 312 and the second diaphragm 312 by designing the second mounting part 3121. Connection reliability of the pot holder 10 .

Optionally, the first connection portion 3112 and the second connection portion 3122 are bonded by glue, and the connection method is simple and reliable.

Referring to FIGS. 1-4 and 6 , the first diaphragm 311 further includes a first arc-shaped portion 3113 connecting the first mounting portion 3111 and the first connecting portion 3112 , and the first arc-shaped portion 3113 faces the direction of the voice coil 34 The recess can increase the effective radiation area of the first diaphragm 311, and the first arc portion 3113 can be designed to be a quarter arc shape.

The first connecting portion 3112 extends horizontally from one end of the first arc-shaped portion 3113 away from the first mounting portion 3111 toward the voice coil 34 , and can be better fixed with the second connecting portion 3122 .

Preferably, in order to reduce the assembly process, the first mounting portion 3111 , the first arc-shaped portion 3113 and the first connecting portion 3112 are integrally formed.

Referring to FIG. 1 to FIG. 4 and FIG. 7 , the second diaphragm 312 further includes a second arc-shaped portion 3123 connecting the second mounting portion 3121 and the second connecting portion 3122 , and the second arc-shaped portion 3123 is recessed toward the voice coil 34 . , can increase the effective radiation area of the second diaphragm 312, the second arc portion 3123 can be designed into a quarter arc shape, corresponding to the first arc portion 3113, in this way, the first diaphragm 311 and the second After the diaphragm 312 is assembled, the whole is in the shape of a semi-circular arc.

The second connecting portion 3122 extends horizontally from the end of the second arc-shaped portion 3123 away from the second mounting portion 3121 toward the voice coil 34 , and can be better fixed to the first connecting portion 3112 .

Preferably, in order to reduce the assembly process, the second mounting portion 3121 , the second arc-shaped portion 3123 and the second connecting portion 3122 are integrally formed.

Referring to FIGS. 1-5 and 8 , the vibration system 30 further includes an auxiliary diaphragm assembly 33 supported on the basin frame 10 , the auxiliary diaphragm assembly 33 is arranged in the receiving cavity 40 , and the auxiliary diaphragm assembly 33 is connected with the dome 32 , the magnetic circuit system 20 drives the voice coil 34 to drive the diaphragm assembly 31 and the auxiliary diaphragm assembly 33 to vibrate through the dome 32, so that the diaphragm assembly 31 and the auxiliary diaphragm assembly 33 form a linkage vibration structure, and the vibration effect is better.

The basin frame 10 further includes a support structure 13 extending from the bottom plate 11 toward the dome 32. The support structure 13 includes a first support portion 131 and a second support portion 132 spaced from the first support portion 131. The auxiliary diaphragm assembly 33 includes a first support portion 131. The three diaphragms 331 and the connecting member 332 connecting the third diaphragm 331 and the dome 32 , the third diaphragm 331 includes a first fixing portion 3311 fixed with the connecting member 332 , and is bent by the periphery of the first fixing portion 3311 The extending loop portion 3312 and the second fixing portion 3313 are bent and extended from the periphery of the loop portion 3312. The second fixing portion 3313 spans the first support portion 131 and the second support portion 132. The support structure 13 is designed in such a way that both The third diaphragm 331 is not affected, and a supporting force can be provided for the third diaphragm 331 .

1-5, the magnetic circuit system 20 includes a magnetic circuit unit 21, the magnetic circuit unit 21 includes a magnetic bowl 211 fixed on the bottom plate 11, a magnetic steel 212 located in the magnetic bowl 211 to form a magnetic gap with the magnetic bowl 211, And the pole core 213 arranged on the magnetic steel 212, the voice coil 34 is arranged in a ring shape, the voice coil 34 is sleeved on the outer periphery of the magnetic steel 212 and the pole core 213, and is located between the magnetic bowl 211 and the magnetic steel 212, when the voice coil 34 When the alternating current is passed in, under the action of the magnetic field of the magnetic circuit system 20, the voice coil 34 will be moved up and down by an alternating driving force, generating an alternating motion, and pushing the dome 32 to drive the diaphragm assembly 31 and the auxiliary diaphragm The assembly 33 vibrates in the vibration direction of the voice coil 34, thereby producing sound.

Further, two magnetic circuit units 21 are arranged at intervals, and there are also two sets of auxiliary diaphragm assemblies 33 , that is, the magnetic circuit system 20 includes two third diaphragms 331 and two connecting members 332 , and two sets of auxiliary diaphragm assemblies 332 are provided. The diaphragm assemblies 33 are respectively disposed on both sides of the magnetic circuit system 20 , two groups of the support structure 13 are disposed, and the two groups of auxiliary diaphragm assemblies 33 are supported on the two groups of support structures 13 in a one-to-one correspondence. In the speaker 1 of this embodiment, two magnetic circuit units 21 are provided to generate a force for driving the vibration of the diaphragm assembly 31 and the auxiliary diaphragm assembly 33 , which can increase the vibration amplitude of the diaphragm assembly 31 and the auxiliary diaphragm assembly 33 , thereby increasing the vibration amplitude of the diaphragm assembly 31 and the auxiliary diaphragm assembly 33 The loudness of the horn, and the speaker 1 of this embodiment can further increase the loudness of the horn by providing two sets of auxiliary diaphragm assemblies 33, and at the same time make the vibration effect brought by the auxiliary diaphragm assembly 33 to the dome 32 more uniform, which is beneficial to improve the loudspeaker 1. acoustic performance.

It can be understood that the number of the magnetic circuit units 21 is not limited to two, and can also be set to three or more, and the specific number is set according to actual requirements. Similarly, the number of the auxiliary diaphragm assemblies 33 is not limited to two groups, and three or more may be provided, and the specific number is set according to actual requirements; correspondingly, the number of the supporting structures 13 varies with the auxiliary diaphragm assemblies 33 varies with the number of .

Referring to FIGS. 1 to 5 , the bottom plate 11 is provided with two first through holes 111 communicating with the receiving cavity 40 , one first through hole 111 is disposed corresponding to one third diaphragm 331 , and the first through hole 111 is disposed on the first support Between the base plate 11 and the second support part 132 , the bottom plate 11 also defines a second through hole 112 corresponding to the dome 32 and communicated with the receiving cavity 40 .

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to The scope of protection of the utility model.

Claims

A loudspeaker, comprising a basin frame, a magnetic circuit system and a vibration system fixed to the basin frame, the basin frame comprising a bottom plate and a side plate bent and extended from the edge of the bottom plate to the vibration system, the vibration system It includes a diaphragm assembly for vibrating and sounding, a dome supported on the diaphragm assembly, and a voice coil fixed on one side of the dome close to the magnetic circuit system, one end of the diaphragm assembly is connected to the One end of the side plate away from the bottom plate is fixedly connected, and the other end of the diaphragm assembly is fixedly connected to the dome, and the dome, the diaphragm assembly and the basin frame together form a receiving cavity, The voice coil and the magnetic circuit system are accommodated in the accommodating cavity. The second diaphragm is stacked along the vibration direction, the first diaphragm includes a first mounting portion that is fixedly connected to the dome and a first connection portion that is far away from the dome, and the second diaphragm includes A second installation part fixedly connected with the side plate and a second connection part away from the side plate, the first connection part is fixedly connected with the second connection part.
The speaker according to claim 1, wherein the first connecting part and the second connecting part are bonded by glue.
The loudspeaker according to claim 1, wherein the first diaphragm further comprises a first arc-shaped portion connecting the first mounting portion and the first connecting portion, the first arc-shaped portion facing The voice coil direction is concave.
The loudspeaker according to claim 3, wherein the first connecting portion extends horizontally from an end of the first arc-shaped portion away from the first mounting portion toward the voice coil.
The loudspeaker according to claim 1, wherein the second diaphragm further comprises a second arc-shaped portion connecting the second mounting portion and the second connecting portion, the second arc-shaped portion facing The voice coil direction is concave.
The loudspeaker according to claim 5, wherein the second connecting portion extends horizontally from an end of the second arc-shaped portion away from the second mounting portion toward the voice coil.
The loudspeaker according to claim 1, wherein the vibration system further comprises an auxiliary diaphragm assembly supported on the basin frame, the auxiliary diaphragm assembly is arranged in the receiving cavity and is connected with the dome connected, the magnetic circuit system drives the voice coil to drive the diaphragm assembly and the auxiliary diaphragm assembly to vibrate through the dome.
The loudspeaker of claim 7, wherein the basin frame further comprises a support structure extending from the bottom plate toward the dome, the support structure comprising a first support part and a connection with the first support part The second supporting parts are arranged at intervals, the auxiliary diaphragm assembly includes a third diaphragm and a connecting piece connecting the third diaphragm and the dome, and the third diaphragm includes a connecting piece that is fixed to the connecting piece. A first fixing part, a folded ring part bent and extended from the peripheral edge of the first fixed part, and a second fixed part bent and extended from the perimeter of the folded ring part, the second fixed part straddles the first fixed part on the support part and the second support part.
The loudspeaker according to claim 8, wherein the magnetic circuit system comprises a magnetic circuit unit, and the magnetic circuit unit comprises a magnetic bowl fixed on the bottom plate, located in the magnetic bowl to communicate with the magnetic The bowl forms the magnetic steel of the magnetic gap and the pole core arranged on the magnetic steel. The voice coil is sleeved on the outer periphery of the magnetic steel and is located between the magnetic bowl and the magnetic steel.
The loudspeaker according to claim 9, wherein there are two voice coils and the two voice coils are spaced apart from each other, and the magnetic circuit units are spaced in two groups, each of the magnetic circuit units Corresponding to one of the voice coils, there are two sets of the auxiliary diaphragm components, each of the auxiliary diaphragm components is arranged between the magnetic circuit unit and the side plate, and the support structure is provided with two The two sets of auxiliary diaphragm assemblies are supported on the two sets of supporting structures in a one-to-one correspondence.
The loudspeaker according to claim 10, wherein the bottom plate is provided with a first through hole communicating with the receiving cavity, the first through hole is disposed corresponding to the third diaphragm, and the first through hole is disposed correspondingly to the third diaphragm. The through hole is arranged between the first support portion and the second support portion, and the bottom plate is also provided with a second through hole corresponding to the dome and communicated with the receiving cavity.