WO2024007509A1 - Dual-diaphragm sound receiver, and electronic device - Google Patents

Abstract

Disclosed in the present invention are a dual-diaphragm sound receiver and an electronic device. The dual-diaphragm sound receiver comprises a housing assembly, a first diaphragm assembly, a second diaphragm assembly, an armature and an electromagnetic drive device. An inner cavity is divided by the first diaphragm assembly and the second diaphragm assembly into a first front cavity, a second front cavity, and a rear cavity located between the first front cavity and the second front cavity. The armature is arranged in the rear cavity, and comprises a first moving sheet and a second moving sheet, which are arranged opposite each other, wherein the first moving sheet and the second moving sheet are each suspended at one end; the first moving sheet is connected to the first diaphragm assembly in a driving manner, and the second moving sheet is connected to the second diaphragm assembly in a driving manner; the electromagnetic drive device is arranged in the rear cavity, and is connected to the housing assembly; and both the first moving sheet and the second moving sheet are arranged in the electromagnetic drive device in a penetrating manner, and are driven by the electromagnetic drive device to vibrate. The dual-diaphragm sound receiver of the present invention having two diaphragm assemblies for vibration and sound production has higher sound pressure output, and has small vibration during operation to work more stably.

Description

A dual-diaphragm receiver and electronic equipment

Priority information: This application claims priority to the Chinese invention patent application with application number 202210802631.X filed on July 7, 2022.

Technical field

The present invention relates to an acoustic device, and in particular to a dual-diaphragm receiver and electronic equipment.

Background technique

A receiver, such as a balanced armature receiver, is an electroacoustic device that converts audio electrical signals into sound signals. It is widely used in electronic devices such as hearing aids, headphones, and telephones.

In the prior art, a balanced armature receiver includes a ferromagnetic assembly, a coil, a U-shaped reed and a diaphragm assembly. One of the two opposing pieces of the U-shaped reed is fixedly connected to the ferromagnetic assembly, and the other is fixedly connected to the ferromagnetic assembly. One end is suspended in the air. After the coil is energized, the suspended piece at the end of the reed is polarized and vibrates reciprocally under the magnetic field of the ferromagnetic assembly. At the same time, the suspended piece at the end of the reed is connected to the diaphragm assembly through a connecting rod. , which in turn drives the diaphragm component to vibrate, inciting the air to produce sound.

A common balanced armature receiver has one diaphragm component, and some balanced armature receivers contain two diaphragm components. The two diaphragm components are driven simultaneously by the same piece of the reed.

Since the two diaphragm assemblies are driven by one plate body, the plate body bears a larger load during vibration, and the two diaphragm assemblies of a balanced armature receiver can only vibrate at the same time and in the same direction. On the one hand, it is impossible to achieve independent control of the two diaphragm components, and its acoustic performance methods are not rich enough to meet occasions with high or special acoustic performance requirements; on the other hand, the two groups of diaphragm components vibrate in the same direction. It will aggravate the overall vibration of the receiver, which is detrimental to the reliable operation and acoustic performance of the receiver.

Therefore, it is necessary to improve the prior art to overcome the defects in the prior art.

Contents of the invention

The object of the present invention is to provide a dual-diaphragm receiver and electronic equipment. The dual-diaphragm receiver can produce sound through two diaphragm assemblies.

In order to achieve the above-mentioned object of the invention, on the one hand, the present invention proposes a dual-diaphragm receiver, including:

The shell component is provided with an inner cavity;

A first diaphragm component is located in the inner cavity and connected to the housing component;

A second diaphragm assembly is provided in the inner cavity and connected to the housing assembly. The first diaphragm assembly and the second diaphragm assembly divide the inner cavity into a first front cavity, a third diaphragm assembly, and a first front cavity. two front chambers and a rear chamber located between the first front chamber and the second front chamber;

An armature is provided in the rear cavity. The armature includes a first moving piece and a second moving piece that are arranged oppositely. The first moving piece and the second moving piece are both suspended at one end. The third moving piece is suspended in the air. There is a transmission connection between a moving piece and the first diaphragm assembly, and a transmission connection between the second moving piece and the second diaphragm assembly; and,

An electromagnetic driving device is provided in the rear cavity and connected to the housing assembly. The first moving piece and the second moving piece are both installed in the electromagnetic driving device. The electromagnetic driving device is To drive the first moving piece and the second moving piece to vibrate.

Further, the electromagnetic driving device includes a magnet assembly and a coil. The magnet assembly includes a first magnetic pole pair and a second magnetic pole pair. Both the first magnetic pole pair and the second magnetic pole pair include two oppositely arranged poles. Magnetic poles with different properties, the first moving piece and the second moving piece are respectively inserted between the two magnetic poles of the first magnetic pole pair and the second magnetic pole pair, and the coil is sleeved on the on the armature.

Further, the electromagnetic driving device includes an E-iron assembly, the first pair of magnetic poles and the second pair of magnetic poles are arranged on the E-iron assembly, and the first pair of magnetic poles is located on both sides of the first moving piece. The polarity of the magnetic pole is the same as the polarity of the second magnetic pole on the magnetic poles located on both sides of the second moving piece, and the first moving piece and the second moving piece are magnetically connected;

Further, the first moving piece and the second moving piece are each covered with at least one of the coils, and the first moving piece and the second moving piece are magnetically connected to the iron assembly; or,

The first moving piece and the second moving piece are both covered with at least one of the coils, and the first moving piece and the second moving piece are non-magnetically connected to the iron assembly; or,

Only one of the first moving piece and the second moving piece is covered with at least one of the coils, and the first moving piece and the second moving piece are non-magnetically connected to the iron assembly. .

Further, the frequency response curves output by the first diaphragm component and the second diaphragm component are different.

Further, the electromagnetic driving device includes an iron assembly connected to the magnet assembly. The iron assembly includes an intermediate magnetic conductive member and a first magnetic conductive member and a third magnetic conductive member respectively connected to both sides of the intermediate magnetic conductive member. Two magnetic conductive members, a first receiving hole is formed between the middle magnetic conductive member and the first magnetic conductive member, and a second receiving hole is formed between the middle magnetic conductive member and the second magnetic conductive member.

Further, the magnet assembly includes a first magnet connected to the first magnetic conductive member, a second magnet connected to the intermediate magnetic conductive member, and a third magnet connected to the second magnetic conductive member, so The two poles of the second magnet are respectively located in the first accommodation hole and the second accommodation hole. The first magnet and the second magnet are arranged oppositely with opposite poles, and the magnetic poles arranged oppositely constitute the first magnetic pole pair. , the second magnet and the third magnet are arranged oppositely with opposite poles, and the magnetic poles arranged oppositely constitute the second magnetic pole pair.

Further, the magnet assembly includes a first magnet, a second magnet, a third magnet and a fourth magnet. The second magnet and the third magnet are respectively connected to both sides of the intermediate magnetic conductive member. The first magnet is connected to the first magnetic conductive member and is arranged opposite to the second magnet with opposite poles. The opposite magnetic poles of the two constitute the first magnetic pole pair. The fourth magnet and the second magnetic conductive member are arranged oppositely. The two magnets are connected with each other and are oppositely arranged with opposite poles to the third magnet, and the oppositely arranged magnetic poles of the two constitute the second magnetic pole pair.

Further, the coil is connected to the magnet assembly and/or the iron assembly, and the electromagnetic driving device is connected to the housing assembly through the intermediate magnetic conductive member.

Furthermore, the housing assembly is provided with a positioning hole communicating with the rear cavity, and the intermediate magnetic conducting member is installed in the positioning hole.

Further, the housing assembly includes a first housing and a second housing arranged along its height direction, and both the first housing and the second housing are provided with part of the positioning hole, so After the first housing and the second housing are connected, they are assembled to form the positioning hole; or,

The housing assembly includes a front housing and a rear housing arranged along its length direction. Both the front housing and the rear housing are provided with portions of the positioning holes. The front housing and the rear housing are After the rear shells are connected, they are pieced together to form the positioning holes.

Further, the housing assembly includes a first housing and a second housing, and the outer edge of the intermediate magnetic conducting member is sandwiched between the first housing and the second housing.

Further, the first moving piece and the second moving piece are connected to the intermediate magnetic conductive member.

Further, the armature includes a connecting portion integrally formed with the first moving piece and the second moving piece, at least one of the first moving piece, the second moving piece and the connecting portion. Connected to the coil and/or the housing assembly.

Further, the dual-diaphragm receiver further includes an armature bracket connected to the armature, and the armature bracket is connected to the coil and/or the housing assembly.

Further, the first moving piece and the second moving piece are connected to the armature bracket; or,

The armature includes a connecting portion integrally formed with the first moving piece and the second moving piece, and at least one of the connecting portion, the first moving piece and the second moving piece is connected to the The armature bracket is connected.

Further, the housing assembly is provided with a first sound outlet connected to the first front cavity and a second sound outlet connected to the second front cavity, and the dual-diaphragm receiver further includes a sound outlet connected to the shell. The body assembly is connected to the sound pipe and covers the first sound outlet and the second sound outlet.

Further, both the first diaphragm assembly and the second diaphragm assembly include an annular outer frame connected to the housing assembly, disposed in the outer frame, and having one end connected to the outer frame. A hinge-connected vibration plate and a film connected to the outer frame and the vibration plate, the film at least covers the gap between the vibration plate and the outer frame, the first moving piece and the The vibration plates of the first diaphragm assembly and the second moving piece and the vibration plates of the second diaphragm assembly are connected through connecting rods.

Further, the housing assembly is provided with a through hole communicating with the rear cavity.

Further, when the first moving piece and the second moving piece vibrate at the same time, the vibration directions of the two are opposite.

On the other hand, the present invention proposes an electronic device, including the dual-diaphragm receiver as described in any one of the above items.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, the dual-diaphragm receiver is provided with a first moving piece and a second moving piece with one end suspended in the air and an electromagnetic driving device that drives the first moving piece and the second moving piece to vibrate. Since the first moving piece and the first vibrating piece The diaphragm assembly is drivingly connected, and the second moving piece is drivingly connected to the second diaphragm assembly. Therefore, the two diaphragm assemblies can be driven to vibrate by the corresponding moving piece. The two moving pieces of the armature can drive a diaphragm component to vibrate respectively, making full use of the structure of the armature itself, which is conducive to achieving more diversified vibrations of the two diaphragm components. The load on the moving piece is small and the driving force is small. More sufficient.

2. As an improvement, by arranging at least one coil outside the first moving piece and the second moving piece, and arranging the two moving pieces to be magnetically connected to the iron assembly, the coil can be independent of the moving piece inside. Control, so that the two diaphragm components can be driven independently, the control method of the diaphragm components is more diverse, and the acoustic performance of the dual-diaphragm receiver is increased.

3. As an improvement, the vibration directions of the first moving piece and the second moving piece when vibrating at the same time are opposite. Since the vibration directions of the two diaphragm components are opposite, the vibrations transmitted to the housing component are offset and can be greatly reduced. The vibration generated by the dual-diaphragm receiver during operation is more stable and reliable, which is beneficial to improving the acoustic effect of the dual-diaphragm receiver and reducing the impact of vibration on the performance and user experience of the product. In addition, the two diaphragm components vibrate and produce sound at the same time, which can effectively increase the sound pressure level of the dual-diaphragm receiver.

4. As an improvement, by setting the frequency response curves output by the first diaphragm component and the second diaphragm component into different forms, the full-frequency performance of the dual-diaphragm receiver output can be improved, giving it a better acoustic effect.

Description of the drawings

Figure 1 is a schematic structural diagram of a dual-diaphragm receiver in Embodiment 1 of the present invention.

FIG. 2 is an exploded view of the dual-diaphragm receiver shown in FIG. 1 .

FIG. 3 is a cross-sectional view of the dual-diaphragm receiver shown in FIG. 1 .

Figure 4 is a schematic structural diagram of the electromagnetic driving device, armature and armature bracket in Embodiment 1 of the present invention.

FIG. 5 is a cross-sectional view of the structure shown in FIG. 4 .

Figure 6 is an exploded view of the structure shown in Figure 4.

Figure 7 is a schematic structural diagram of the armature in Embodiment 1 of the present invention.

Figure 8 is a schematic structural diagram of the connection between the armature and the armature bracket in Embodiment 1 of the present invention.

FIG. 9 is a cross-sectional view of the dual-diaphragm receiver shown in FIG. 1 from another perspective.

Figure 10 is a schematic structural diagram of the diaphragm assembly in Embodiment 1 of the present invention.

FIG. 11 is a cross-sectional view of the diaphragm assembly shown in FIG. 10 .

Figure 12 is a schematic layout diagram of two sets of magnetic pole pairs in an embodiment of the present invention.

Figure 13 is a schematic diagram of the arrangement of two sets of magnetic pole pairs in another embodiment of the present invention.

Figure 14 is a cross-sectional view of the dual-diaphragm receiver in Embodiment 2 of the present invention.

Figure 15 is a cross-sectional view of a dual-diaphragm receiver in Embodiment 3 of the present invention.

Figure 16 is a schematic structural diagram of the armature in Embodiment 3 of the present invention.

Figure 17 is a schematic diagram of the connection between the electromagnetic driving device and the armature in Embodiment 3 of the present invention.

Figure 18 is a cross-sectional view of the dual-diaphragm receiver in Embodiment 3 of the present invention from another direction.

Figure 19 is a schematic structural diagram of a dual-diaphragm receiver in Embodiment 4 of the present invention.

FIG. 20 is an exploded view of the dual-diaphragm receiver shown in FIG. 19 .

Figure 21 is a cross-sectional view of a dual-diaphragm receiver in Embodiment 5 of the present invention.

Figure 22 is a schematic diagram of the connection between the armature and the armature bracket in Embodiment 5 of the present invention.

Figure 23 is a schematic structural diagram of the electromagnetic driving device, armature and armature bracket in Embodiment 5 of the present invention.

Figure 24 is a cross-sectional view of the dual-diaphragm receiver in Embodiment 5 of the present invention from another direction.

Figure 25 is a cross-sectional view of the dual-diaphragm receiver in Embodiment 6 of the present invention.

Figure 26 is a schematic diagram of the connection between the armature and the armature bracket in Embodiment 6 of the present invention.

Figure 27 is a schematic structural diagram of the electromagnetic driving device, armature and armature bracket in Embodiment 6 of the present invention.

Figure 28 is a cross-sectional view of the dual-diaphragm receiver according to Embodiment 6 of the present invention from another direction.

Figure 29 is a schematic structural diagram of a dual-diaphragm receiver in Embodiment 7 of the present invention.

Figure 30 is a perspective cross-sectional view of the front housing, the rear housing, the electromagnetic driving device and the armature in Embodiment 7 of the present invention.

Figure 31 is a schematic diagram of the connection between the armature and the rear housing in Embodiment 7 of the present invention.

Figure 32 is a cross-sectional view of the electromagnetic driving device, the armature and the armature bracket in Embodiment 8 of the present invention.

Figure 33 is a schematic diagram of the connection between the armature and the armature bracket in Embodiment 8 of the present invention.

Figure 34 is a schematic structural diagram of an electromagnetic driving device, an armature and an armature bracket according to an embodiment of the present invention. In the figure, the armature bracket is connected to the lower surface of the first moving piece.

Figure 35 is a schematic structural diagram of the armature bracket connected to the armature in Figure 34.

Figure 36 is a schematic structural diagram of an electromagnetic driving device, an armature and an armature bracket according to an embodiment of the present invention. In the figure, the armature bracket is provided with a third arm.

Figure 37 is a schematic structural diagram of the armature bracket connected to the armature in Figure 36.

Figure 38 is a schematic structural diagram of a dual-diaphragm receiver in Embodiment 9 of the present invention.

Figure 39 is a cross-sectional view of the dual-diaphragm receiver in Embodiment 9 of the present invention.

Figure 40 is a schematic structural diagram of the electromagnetic driving device, armature and armature bracket in Embodiment 9 of the present invention.

Figure 41 is an exploded view of the structure shown in Figure 40.

Figure 42 is a cross-sectional view of a dual-diaphragm receiver in Embodiment 10 of the present invention.

Figure 43 is a schematic structural diagram of the electromagnetic driving device, armature and armature bracket in Embodiment 10 of the present invention.

Figure 44 is an exploded view of the structure shown in Figure 43.

Fig. 45 is a cross-sectional view of the structure shown in Fig. 43.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation modes of the present application will be described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "including" and "having" and any variations thereof in this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

This application discloses a dual-diaphragm receiver, with reference to FIGS. 1 to 3 , which includes a housing assembly 1 , two diaphragm assemblies, an armature 4 and an electromagnetic driving device 5 .

The housing assembly 1 is formed by connecting two or more housings and is provided with an inner cavity. The two diaphragm assemblies, the armature 4 and the electromagnetic driving device 5 are all arranged in the inner cavity. The housing component 1 can be made of magnetically conductive materials or non-magnetic conductive materials. When the housing component 1 is made of magnetically conductive materials, it can play a role in magnetic shielding. Where magnetic leakage is required, magnetically conductive materials are preferred. .

The two diaphragm components are the first diaphragm component 2 and the second diaphragm component 3 respectively. The first diaphragm component 2 and the second diaphragm component 3 are both connected to the inner wall 1g of the housing component 1 and are in height direction. They are arranged at intervals, preferably in parallel. The first diaphragm assembly 2 and the second diaphragm assembly 3 divide the inner cavity into a first front cavity 10, a second front cavity 11 and a rear cavity 12 located between the two front cavities, where the first front cavity 10 is located Between the first diaphragm assembly 2 and the top wall 1e of the housing assembly 1, the second front cavity 11 is located between the second diaphragm assembly 3 and the bottom wall 1f of the housing assembly 1, and the rear cavity 12 is located between the two diaphragms. between components.

The armature 4 is used to vibrate under the driving of the electromagnetic driving device 5 and drive the first diaphragm assembly 2 and the second diaphragm assembly 3 to vibrate. The armature 4 includes a first moving piece 40 and a second moving piece 41 that are arranged oppositely. Preferably, the first moving piece 40 and the second moving piece 41 are arranged in parallel and opposite to each other. Both the first moving piece 40 and the second moving piece 41 are arranged with one end suspended in the air. The other end of the moving piece can be connected to other components. For example, it can be connected to the housing assembly 1 or the electromagnetic driving device 5, or it can be connected to both the housing assembly 1 and the electromagnetic driving device 5. The moving piece is connected to the housing assembly. 1 and the electromagnetic driving device 5 may be directly connected, or may be connected through other components (such as the connecting part 42 or the armature bracket 7 described below), so that a part of the armature 4 can be connected with the housing assembly 1 and The electromagnetic driving device 5 is relatively fixed, which is beneficial to the controlled vibration of the moving piece. There are transmission connections between the first moving piece 40 and the first diaphragm assembly 2 and between the second moving piece 41 and the second diaphragm assembly 3. As a preferred embodiment, the transmission connection is realized through the connecting rod 43. The connecting rod 43 is preferably connected to the suspended end of the moving piece.

By arranging the two moving pieces of the armature with one end suspended in the air, and the first diaphragm assembly 2 and the second diaphragm assembly 3 being driven to vibrate by the first moving piece 40 and the second moving piece 41 respectively, it is possible to fully The structure of the armature 4 is used to control the vibration of the corresponding diaphragm component by controlling the vibration of the moving piece, so that the vibration modes of the two diaphragm components are richer, and the acoustic expression form of the dual-diaphragm receiver is richer, and The two moving pieces drive their corresponding diaphragm components to vibrate. When vibrating, the load on the moving piece is small, the driving force is more sufficient, and the dual-diaphragm receiver works more reliably.

In some embodiments, when the first moving piece 40 and the second moving piece 41 vibrate at the same time, their vibration directions are opposite, that is, they vibrate in opposite directions. When the first moving piece 40 and the second moving piece 41 are driven by the electromagnetic driving device 5 to vibrate in the opposite direction, the first diaphragm assembly 2 and the second diaphragm assembly 3 are driven by the two connecting rods 43 to vibrate in the opposite direction. , thus inciting the air to produce sound. Since the two moving pieces and the two diaphragm assemblies vibrate in opposite directions, the vibrations transmitted to the housing assembly 1 by the two moving pieces and the two diaphragm assemblies are offset, which can greatly reduce the vibration of the dual-diaphragm receiver. Due to the vibration generated during operation, the dual-diaphragm receiver is more stable during operation and has better performance. At the same time, since the two diaphragm components simultaneously incite air to produce sound, it can increase the sound pressure level.

As a preferred embodiment, the vibration of the two moving pieces is achieved in the following manner. As shown in Figure 12, the electromagnetic driving device 5 includes a magnet assembly 52 and a coil 51. The magnet assembly 52 includes two sets of magnetic pole pairs, respectively the first The two sets of magnetic pole pairs 5a and the second magnetic pole pair 5b include two oppositely arranged magnetic poles with different polarities, that is, each set of magnetic pole pairs has an N pole and an S pole arranged oppositely. The first moving piece 40 and the second moving piece 41 are respectively inserted between the two magnetic poles of the first magnetic pole pair 5a and the second magnetic pole pair 5b. The coil 51 is set on the armature 4 and is used to generate the first polarization. The magnetic fields of a moving piece 40 and a second moving piece 41, after the coil 51 is energized, at least the part of the first moving piece 40 located in the first magnetic pole pair 5a and the part of the second moving piece 41 located in the second magnetic pole pair 5b are polarization. When the moving piece is not polarized, it is in a balanced state between the two magnetic poles. When the parts of the first moving piece 40 and the second moving piece 41 located within the magnetic pole pair are polarized, the magnetic poles on one side of the moving piece will Applying magnetic attraction to it, the magnetic pole on the other side will exert magnetic repulsion on it, thereby driving the moving piece to deflect to one side. Furthermore, when the polarity of the part of the moving piece located within the magnetic pole pair changes, the moving piece will be subjected to a reaction. By changing the direction of the current in the coil 51 and the direction of the magnetic field generated by it, the polarity of the moving piece can be changed, thereby driving the moving piece to vibrate reciprocally.

In some embodiments, the polarity of the magnetic poles of the first magnetic pole pair 5a located on both sides of the first moving piece 40 is the same as the polarity of the magnetic poles of the second magnetic pole pair 5b located on both sides of the second moving piece 41, that is, when the first magnetic pole When the magnetic poles of pair 5a located on the upper and lower sides of the first moving piece 40 are N poles and S poles respectively, the magnetic poles of the second magnetic pole pair 5b located on the upper and lower sides of the second moving piece 41 are also N poles and S poles respectively, as shown in Figure 12 shown; on the contrary, when the magnetic poles of the first magnetic pole pair 5a located on the upper and lower sides of the first moving piece 40 are S pole and N pole respectively, the magnetic poles of the second magnetic pole pair 5b located on the upper and lower sides of the second moving piece 41 are also respectively S pole and N pole, as shown in Figure 13. In these embodiments, when the coil 51 is energized, at least the parts of the two moving pieces located within the magnetic pole pair are polarized. When the parts of the two moving pieces located within the magnetic pole pair are polarized to different polarities, that is, they are polarized respectively. When polarized into N pole and S pole, the two moving pieces receive magnetic forces in opposite directions and move in opposite directions. It can be understood that the number of coils 51 is not limited. For example, the coil 51 can be provided only outside one moving piece (the number of coils 51 set outside the same moving piece is not limited to one). In this case, the two moving pieces should They are connected through magnetic conductive materials. For example, coils 51 can be provided outside both moving pieces. It can be understood that the coil 51 is placed outside the moving piece and is not in contact with the moving piece. A certain gap is reserved between the coil 51 and the moving piece to ensure that the moving piece has enough space to vibrate freely.

The above-mentioned magnetic pole pairs can be formed by arranging oppositely arranged magnets. For example, as shown in Figures 4 and 5, the ferrite magnet assembly includes four magnets arranged in parallel and spaced apart. From top to bottom, they are the first magnet 521, the second magnet 521 and the second magnet 521. Magnet 522, third magnet 523 and fourth magnet 524, wherein the first magnet 521 and the second magnet 522 are oppositely arranged with opposite poles, and the two oppositely arranged magnetic poles (in the figure are the N pole of the first magnet 521 and the second magnet 522). The S pole (S pole) of the magnet 522 constitutes the first magnetic pole pair 5a described above. The third magnet 523 and the fourth magnet 524 are oppositely arranged with opposite poles, and the two opposite magnetic poles (in the figure, the N pole of the third magnet 523 and the S pole of the fourth magnet 524) constitute the second magnet as mentioned above. Magnetic pole pair 5b. For another example, as shown in Figures 43 and 45, in some embodiments, the magnet assembly 52 includes three magnets arranged in parallel and spaced apart, from top to bottom, a first magnet 521, a second magnet 522, and a third magnet 523. , wherein the first magnet 521 and the second magnet 522 are oppositely arranged with opposite poles, and the two opposite magnetic poles (in the figure, the N pole of the first magnet 521 and the S pole of the second magnet 522) constitute the above-mentioned In the first magnetic pole pair 5a, similarly, the second magnet 522 and the third magnet 523 are arranged with opposite poles, and the two opposite magnetic poles (in the figure are the N pole of the second magnet 522 and the S pole of the third magnet 523 ) constitutes the second magnetic pole pair 5b mentioned above.

The ferrite assembly 53 is made of magnetically permeable material. The magnets mentioned above are all connected to the ferrite assembly 53. The ferrite assembly 53 forms a magnetic permeability circuit to improve the magnetic permeability efficiency, thereby increasing the driving force of the moving piece and improving the dual diaphragm. Receiver sensitivity. The ferrite assembly 53 and the magnet assembly 52 constitute a ferrite magnet assembly. The ferrite magnet assembly is connected to the housing assembly 1 through the ferrite assembly 53. The coil 51 is connected to the ferrite magnet assembly. As shown in Figure 5, the left end surface of the coil 51 It is connected to the right end surface of the ferrite magnet assembly. Specifically, the coil 51 can be connected to one of the magnet assembly 52 and the ferrite assembly 53, or to both. The connection method is, for example, an adhesive connection, so that electromagnetic driving can be realized. The connection and fixation of the entire device 5 to the housing assembly 1.

The armature 4 can be connected to the housing component 1 or the coil 51, or to both the housing component 1 and the coil 51. The part connected to the housing component 1 or the coil 51 is relatively fixed to the housing component 1 and the coil 51. Part of the fixed part is its fixed part. Usually, the fixed part and the suspended end of the moving piece are respectively located on both sides of the coil 51, so that the moving piece has a longer suspended length. In some embodiments, as shown in FIG. 16 , the armature 4 includes a connecting portion 42 integrally formed with the first moving piece 40 and the second moving piece 41 , and the armature 4 is generally U-shaped as a whole. The connection between the armature 4 and the housing assembly 1 can be achieved by connecting one or more of the first moving piece 40 , the second moving piece 41 and the connecting portion 42 to the coil 51 and/or the housing assembly 1 . In some embodiments, as shown in FIG. 26 , the dual-diaphragm receiver further includes an armature bracket 7 , which can be connected to the right end of the first movable piece 40 and the second movable piece 41 (the end opposite to the suspended end). ), when the armature 4 is provided with a connecting portion 42, as shown in Figures 8, 22 and 33, the armature bracket 7 can also be connected with the connecting portion 42, the first moving piece 40 and the second moving piece. One or more of 41 are connected. The armature 4 is connected to the coil 51 and/or the housing assembly 1 through the armature bracket 7 to achieve connection with the housing assembly 1 .

As a preferred embodiment, the dual-diaphragm receiver further includes a sound outlet tube 6 connected to the housing assembly 1. The housing assembly 1 is provided with a first sound outlet 13 communicating with the first front cavity 10 and a second sound outlet 13 communicating with the first front cavity 10. The second sound outlet 14 communicates with the front cavity 11 . The sound outlet tube 6 is covered with the first sound outlet hole 13 and the second sound outlet hole 14 so that the sound emitted by the first sound outlet hole 13 and the second sound outlet hole 14 can be converged in the sound outlet tube 6 and then emitted. , because the dual-diaphragm receiver vibrates through the two diaphragm components to produce sound, it can significantly increase the sound pressure level.

In some embodiments, only one of the first moving piece 40 and the second moving piece 41 is equipped with the coil 51, and the first moving piece 40 and the second moving piece 41 are magnetically connected. For example, the armature 4 is integrated. The molding design is made of magnetically conductive material as a whole, or the two moving pieces are independent parts and connected through the armature bracket 7 made of magnetically conductive material to realize the magnetic connection of the two moving pieces. At the same time, the connection between the first moving piece 40 and the iron component 53 and between the second moving piece 41 and the iron component 53 are non-magnetic connections. For example, the housing component 1 is made of non-magnetic material, or When the housing component 1 is made of magnetically permeable material, a non-magnetic connection is provided between the two moving pieces and the housing component 1 . At this time, after the coil 51 is energized, the two moving pieces are polarized at the same time, and the parts of the two moving pieces located within the magnetic pole pair are polarized into two poles with opposite polarities, so that the coil 51 can control the two moving pieces simultaneously.

In some embodiments, the first moving piece 40 and the second moving piece 41 that are magnetically connected to each other are both covered with coils 51 , and the first moving piece 40 and the second moving piece 41 are both magnetically connected to the iron assembly 53 , for example, the housing assembly 1 is made of magnetically conductive material, and the iron assembly 53 and the two moving pieces are magnetically connected to the housing assembly 1, thereby achieving magnetic conduction between the two moving pieces and the iron assembly 53. connection. At this time, after the coil 51 is energized, the two moving pieces pass between the housing assembly 1 and the iron assembly 53 to form a magnetic circuit. The two coils 51 only polarize the moving pieces inside, so that the two coils 51 can The two coils 51 can independently drive the respective moving pieces to vibrate. In other words, the two coils 51 can independently control the vibration of the two diaphragm components. In this way, the vibration modes of the diaphragm components are more diverse. For example, only one diaphragm can be vibrated. One component vibrates, while the other does not; for another example, two diaphragm components can vibrate at intervals; for another example, two diaphragm components can vibrate at the same time. When the two diaphragm components vibrate in opposite directions at the same time, the vibration of the dual-diaphragm receiver can be effectively reduced, making it work more smoothly.

In some embodiments, the first moving piece 40 and the second moving piece 41 that are magnetically connected to each other are both covered with coils 51, and the first moving piece 40, the second moving piece 41 and the iron assembly 53 are non-conductive. Magnetic connection, the two coils 51 can polarize the two moving pieces at the same time, so that the parts of the two moving pieces located within the magnetic pole pair are polarized into two poles with opposite polarities, so that the two moving pieces can be driven together. When the two coils 51 are energized and working at the same time, the driving force can be increased; the two coils 51 can also work in turns to increase the overall service life.

In order to improve the full-frequency performance of the dual-diaphragm receiver, in some embodiments, the frequency response curves output by the first diaphragm component 2 and the second diaphragm component 3 are different. For example, the output of one of the diaphragm components is biased toward high frequencies. , the other is biased toward low frequencies, which can make the frequency response curve of the entire frequency band better, thereby improving the acoustic performance.

It can be understood that since the armature 4 has two moving pieces that drive two diaphragm assemblies to vibrate respectively, the acoustic performance of the moving pieces can be changed by structurally designing different moving pieces. For example, the first moving piece 40 One of the second moving pieces 41 is set to be biased toward high frequencies, and the other is set to be biased toward low frequencies, thereby achieving better full-frequency performance. By increasing the stiffness coefficient of the moving piece (for example, increasing the thickness of the moving piece, reducing the length of the moving piece) and reducing the dynamic mass of the moving piece, the main mode frequency f ₀ of the moving piece can be increased, giving it better high frequency Output, by reducing the stiffness coefficient of the moving piece (such as reducing the thickness of the moving piece, increasing the length of the moving piece) and increasing the quality of the moving piece, the main mode frequency f ₀ of the moving piece can be reduced, making it have better low frequency output.

The frequency response curve of the diaphragm assembly can also be changed by changing the mass of the diaphragm assembly's diaphragm 31 (labeled in Figure 10). Increasing the mass of the diaphragm assembly 31 will reduce the high-frequency output and the bandwidth will also become smaller; on the contrary, decreasing The quality of the vibrating plate 31 can improve the high frequency output and increase the bandwidth.

Furthermore, in the case where coils 51 are provided outside both the first moving piece 40 and the second moving piece 41 and the coils 51 can independently control the two moving pieces, different frequency bands of the coil 51 can also be changed by adjusting the coil 51 The output performance of the coil 51 can be adjusted by adjusting the ratio of the resistance to the square of the number of turns of the coil (DCR/N ² ). Generally, increasing the ratio of the resistance to the square of the number of turns can make The high-frequency output increases, but the low-frequency output will decrease. Reducing the ratio of the resistance to the square of the number of turns can increase the low-frequency output, but the high-frequency output will decrease. For example, you can reduce the number of turns in the coil to increase the ratio while keeping the resistance constant. On the contrary, increasing the number of turns can significantly reduce the ratio.

To sum up, the frequency response curve of the diaphragm component can be adjusted by adjusting the structural parameters of the moving piece, the coil 51 and the diaphragm component itself. By setting the two diaphragm components into different forms of frequency response curves, the frequency response curve of the diaphragm component can be adjusted. The outputs of the two diaphragm components are matched with each other to achieve better full-frequency response and better bandwidth. In this way, the dual-diaphragm receiver has a better frequency response curve in a wider frequency band and better acoustic performance.

In some embodiments, the housing assembly 1 is provided with a through hole 120 communicating with the rear cavity 12 to reduce the stiffness of the rear cavity and increase the low-frequency output. Preferably, through holes 120 are provided on both sides of the housing assembly 1, and the through holes 120 on both sides are arranged symmetrically. Further preferably, the through hole 120 is provided at a position close to the rear end of the housing assembly 1 , such as a position corresponding to the armature bracket 7 or the connecting portion 42 .

The present invention will be further described in detail below with several specific examples.

Example 1

As shown in FIGS. 1 to 11 , a dual-diaphragm receiver includes a housing assembly 1 , a first diaphragm assembly 2 , a second diaphragm assembly 3 , an armature 4 and an electromagnetic driving device 5 .

The housing assembly 1 includes a first housing 16 and a second housing 17. The first housing 16 includes an independently provided upper cover 1a and an upper frame 1b connected to the upper cover 1a. The second housing 17 includes a third The second frame 1c and the lower cover 1d connected to the second housing 1c, the upper cover 1a, the upper frame 1b, the lower frame 1c and the lower cover 1d are arranged in sequence from top to bottom, and there is space between the two adjacent components. Connected by gluing or welding. The upper frame 1b and the lower frame 1c are both ring-shaped. The upper cover 1a seals the upper end of the upper frame 1b, and the lower cover 1d seals the lower end of the lower frame 1c.

The electromagnetic driving device 5 includes a ferrite magnet assembly. As shown in FIGS. 4 to 6 , the ferrite magnet assembly includes a ferrite assembly 53 and a magnet assembly 52 connected to the ferrite assembly 53 . The iron assembly 53 includes a middle magnetic conductive member 530 and a first magnetic conductive member 531 and a second magnetic conductive member 532 respectively connected to both sides of the middle magnetic conductive member 530. Preferably, the first magnetic conductive member 531 and the second magnetic conductive member 532 are connected to both sides of the middle magnetic conductive member 530. The components 532 are symmetrically arranged on both sides of the middle magnetic conductive component 530 . The middle magnetic conductive member 530 is plate-shaped, and the first magnetic conductive member 531 and the second magnetic conductive member 532 are U-shaped. A first receiving hole 533 and a second receiving hole 534 are respectively formed between them and the middle magnetic conductive member 530 .

The magnet assembly 52 includes four plate-shaped magnets, namely a first magnet 521, a second magnet 522, a third magnet 523 and a fourth magnet 524. The first magnet 521 and the second magnet 522 are arranged in the first receiving hole 533, and are oppositely arranged with opposite poles. The first magnet 521 is connected to the surface of the first magnetic conductive member 531 facing the middle magnetic conductive member 530 , and the second magnet 522 is connected to the surface of the middle magnetic conductive member 530 facing the first magnetic conductive member 531 . The third magnet 523 and the fourth magnet 524 are arranged in the second receiving hole 534, and are oppositely arranged with different poles. The third magnet 523 is connected to the surface of the middle magnetic conductive member 530 facing the second magnetic conductive member 532, and the fourth magnet 524 is connected to the surface of the second magnetic conductive member 532 facing the middle magnetic conductive member 530.

The electromagnetic driving device 5 is connected to the housing assembly 1 through an intermediate magnetic conducting member 530. Specifically, as shown in Figure 1, the housing assembly 1 is provided with a positioning hole 15 communicating with the rear cavity 12, and the intermediate magnetic conducting member 530 protrudes to The outer portions of the first magnetic conductive member 531 and the second magnetic conductive member 532 are installed in the positioning holes 15 and can be fixedly connected to the housing assembly 1 by gluing or welding. Preferably, the housing assembly 1 is provided with two positioning holes 15 on both sides thereof, so that both ends of the intermediate magnetic conductive member 530 can be fixed and the stability is better. In order to facilitate the connection between the middle magnetic conductive member 530 and the positioning hole 15, as shown in Figure 2, both the first housing 1b and the second housing 1c are provided with partial positioning holes 15. When the two middle housings are connected together , can be pieced together to form a complete positioning hole 15, so that the intermediate magnetic conductive member 530 can be clamped in the positioning hole 15 by splicing up and down.

As shown in FIG. 7 , the armature 4 includes a first moving piece 40 , a second moving piece 41 that are oppositely arranged, and a connecting portion 42 connected between the first moving piece 40 and the second moving piece 41 . The first moving piece 40 The second moving piece 41 and the connecting portion 42 are integrally formed, for example, the armature 4 can be formed by bending. The armature 4 is made of magnetically conductive material so that it can be polarized by the energized coil 51 . As shown in Figure 8, the dual-diaphragm receiver also includes an armature bracket 7 connected to the armature 4. Specifically, the armature bracket 7 is connected to the outer surface 422 (labeled in Figure 5) of the connecting portion 42, for example, by gluing. Or connected by welding.

The armature bracket 7 includes two first arm portions 70 extending to both sides of the connecting portion 42. The first arm portions 70 are connected to the coil 51 and the inner wall 1g of the housing assembly 1 through adhesive connection, as shown in Figure 9. The glue block 9 is formed between the first arm part 70 and the coil 51 and the housing assembly 1 . Since the additional armature bracket 7 is provided, the height of its arm portion 70 can be set to be greater than the overall height of the armature 4 , thereby increasing the connection area between the first arm portion 70 and the coil 51 and the housing assembly 1 , improve the firmness of the connection.

The electromagnetic driving device 5 includes two coils 51. Both coils 51 are connected to the end faces of the ferrite magnet components facing the coils 51, and the inner holes 510 of the two coils 51 are respectively paired with the first receiving hole 533 and the second receiving hole 534. Accurately, the first moving piece 40 is inserted into the coil 51 and the first receiving hole 533 , and the second moving piece 41 is inserted into the other coil 51 and the second receiving hole 534 . In this embodiment, the magnetic poles of each magnet are arranged in the same direction, with the N pole on the bottom and the S pole on the top (in other embodiments, the S pole can also be on the top and the N pole on the bottom), and the magnetic poles of the same polarity face The same direction is convenient for magnetizing the magnet assembly 52. After the coil 51 is energized, the parts of the two moving pieces located in the two receiving holes are polarized into opposite poles.

Both moving pieces have portions extending out of the ferromagnetic assembly, and the portions passing through the ferromagnetic assembly are connected to the connecting rod 43, and the other end of the connecting rod 43 is connected to the diaphragm assembly.

Preferably, the first diaphragm assembly 2 and the second diaphragm assembly 3 are symmetrically arranged in the housing assembly 1 . As shown in Figures 10 and 11, both diaphragm assemblies include an annular outer frame 30 connected to the housing assembly 1, a vibration plate 31 disposed in the outer frame 30, and a vibration plate 31 connected to the outer frame 30. The diaphragm 32 connected to the plate 31 has one end of the vibration plate 31 hingedly connected to the outer frame 30 , and there is a gap between the outer periphery of the vibration plate 31 and the outer frame 30 , so that the vibration plate 31 can connect with the outer frame 30 34 moves relative to the outer frame 30 as a hinge. The film 32 at least covers the gap between the outer periphery of the diaphragm 31 and the outer frame 30 . The connecting rod 43 is connected to the vibration plate 31 , for example, by adhesive connection. When the moving piece moves, the connecting rod 43 drives the vibration plate 31 to move synchronously. Further, the first diaphragm assembly 2 and the second diaphragm assembly 3 also include an annular bracket 33. The annular bracket 33 is fixed on the inner wall 1g of the housing assembly 1, and cooperates with the outer frame 30 to clamp the film 32 The outer edge of the diaphragm assembly is used to improve the overall firmness of the diaphragm assembly and facilitate the assembly and connection of the diaphragm assembly and the housing assembly 1.

As shown in Figures 1 and 3, the dual-diaphragm receiver also includes a sound outlet tube 6 connected to the housing assembly 1. A sound cavity 60 is formed between the sound outlet tube 6 and the outer surface of the housing assembly 1. The housing assembly 1 A first sound outlet 13 communicating with the first front cavity 10 and a second sound outlet 14 communicating with the second front cavity 11 are provided. The sound tube 6 is covered on the first sound hole 13 and the second sound hole 14, and its sound cavity 60 is connected with the two sound holes. In this way, the first sound hole 13 and the second sound hole 14 emit The sound can be concentrated in the sound tube 6 and then emitted, which can increase the sound pressure output.

As shown in FIG. 3 , the dual-diaphragm receiver also includes a connection terminal 8 , and the connection terminal 8 and the sound outlet tube 6 are respectively located at both ends of the housing assembly 1 . The lead wire of the coil 51 is connected to the terminal 8, and is electrically connected to an external control device through the terminal 8, so that the dual-diaphragm receiver can be driven and wiring is facilitated.

In this embodiment, the armature bracket 7 can be made of magnetically permeable material or non-magnetic permeable material. When both the housing component 1 and the armature bracket 7 are made of magnetically permeable materials, and there is a gap between the armature bracket 7 and the housing component 1 When a magnetic connection is formed, a magnetic connection is formed between the armature 4 and the iron assembly 53. At this time, the magnetic induction lines generated by energizing the coil 51 pass through the armature 4, the armature bracket 7, the housing assembly 1 and the iron assembly. Component 53 forms a magnetic circuit. Taking the part of the first moving piece 40 located in the first magnetic pole pair 5a as an example, which is polarized to the N pole, the magnetic flux lines are emitted through the N pole of the first moving piece 40, pass through the air gap, and enter the middle magnetic conductor of the second magnet 522. 530 , and then returns from the connecting part 42 to the first moving piece 40 through the housing assembly 1 and the armature bracket 7 to form a magnetic circuit. In this case, the two coils 51 are respectively used to polarize the moving pieces surrounding them, which can realize independent control of the two moving pieces. The vibration modes of the diaphragm components are more diverse, and the acoustic performance of the dual-diaphragm receiver is improved. Richer.

When the armature bracket 7 is made of non-magnetic conductive material, a non-magnetic conductive connection is formed between the armature 4 and the iron component 53. At this time, the magnetic induction lines generated by the coil 51 being energized are emitted from the moving piece polarized to the N pole. , after passing through the air gap between the two moving pieces, the two magnets and the intermediate magnetic conductor 530, it enters the moving piece polarized to the S pole, and then returns to the N pole in the armature 4, forming a magnetic circuit. . Each coil 51 can polarize two movable pieces, and the parts of the two movable pieces located between the two receiving holes are polarized into opposite poles, and then vibrate in opposite directions under the action of the magnetic field of the magnet assembly 52 .

Example 2

The difference between this embodiment and Embodiment 1 is that the dual-diaphragm receiver of this embodiment only includes one coil 51. As shown in FIG. 14, the coil 51 surrounds the outside of the first movable piece 40. In this embodiment, the armature bracket 7 and the housing assembly 1 are connected in a non-magnetic conductive manner, and the coil 51 can polarize the two moving pieces at the same time to achieve reverse vibration of the two moving pieces. Similarly, in other embodiments, the coil 51 can also be set on the second moving piece 41 .

Example 3

The difference between this embodiment and Embodiment 1 is that the structure of the armature 4 is different from that in Embodiment 1.

As shown in Figures 15 to 18, in this embodiment, the dual-diaphragm receiver does not have an armature bracket 7. Two second arm portions 420 extending toward the coil 51 are provided on both sides of the connecting portion 42 of the armature 4. The two arm portions 420 are connected to the two coils 51 and the inner wall 1g of the housing assembly 1 by gluing. As shown in Figures 17 and 18, the second arm portion 420 is connected to the coils 51 and the housing assembly 1. The joints form a glue block 9.

Since the dual-diaphragm receiver omits the armature bracket 7, there is no need to weld the armature bracket 7 on the armature 4, and the structure is simpler, which can simplify the assembly process and reduce costs.

Example 4

The difference between this embodiment and Embodiment 3 is that the structure of the housing assembly 1 is different from that in Embodiment 3.

As shown in Figures 19 and 20, in this embodiment, the upper cover 1a and the upper frame 1b of the first housing 16 are integrally formed, and the lower frame 1c and the lower cover 1d of the second housing 17 are integrally formed. In this way, the assembly process can be further simplified and production efficiency improved.

Further, a through hole 120 is provided on both sides of the first housing 1a and the second housing 1b. Preferably, the through holes 120 on both sides are symmetrically arranged and arranged in contact with the armature 4 The corresponding position of the connecting portion 42 can reduce the stiffness of the rear cavity 12 and increase the low-frequency output.

The through hole 120 is preferably circular, with a diameter of 0.05 mm to 1 mm.

Example 5

The difference between this embodiment and Embodiment 1 is that the structure of the armature bracket 7 is different from that in Embodiment 1.

As shown in Figures 21 to 24, in this embodiment, the armature bracket 7 is in the shape of a long plate, which is connected to the inner surface 421 of the connecting portion 42 of the armature 4. The connection method can be, for example, adhesive connection or welding. The armature bracket 7 is connected to the two coils 51 and the inner wall 1g of the housing assembly 1 through glue. Figures 23 and 24 show the glue block 9 at the connection. It can be understood that in other embodiments, the armature bracket 7 can also be disposed outside the connecting portion 42 and connected to the outer surface 422 of the connecting portion 42 , and the inner surface 421 of the connecting portion 42 and the coil 51 are glued together. The armature bracket 7 and the housing assembly 1 are connected by adhesive.

Example 6

The difference between this embodiment and Embodiment 5 is that the structure of the armature 4 is different from that in Embodiment 5.

As shown in FIGS. 25 to 28 , in this embodiment, the first moving piece 40 and the second moving piece 41 of the armature 4 are independent of each other, and there is no connecting portion 42 between them. The first moving piece 40 and the second moving piece 41 are connected through the long plate-shaped armature bracket 7, and they are connected to the center positions of the upper surface and the lower surface of the armature bracket 7 respectively.

The armature bracket 7 is connected to the two coils 51 and the inner wall 1g of the housing assembly 1 through glue. Figures 27 and 28 show the glue block 9 at the connection.

In this embodiment, the armature bracket 7 is made of magnetically conductive material.

Example 7

The difference between this embodiment and Embodiment 1 is that in this embodiment, the structure of the housing assembly 1 is different from that in Embodiment 1.

As shown in Figures 29 to 31, in this embodiment, the housing assembly 1 includes an upper cover 1a, a front housing 18 (with the end of the sound tube 6 as the front end), a rear housing 19 and a lower cover 1d. The front housing 18 and the rear housing 19 are arranged along the length direction of the housing assembly 1. They are butted front and back to form an annular housing. The upper cover 1a and the lower cover 1d are respectively connected to the upper and lower ends of the annular housing. , and seal the openings at both ends of the annular shell.

Both the front housing 18 and the rear housing 19 are provided with partial positioning holes 15. When the front housing 18 and the rear housing 19 are connected, the two cooperate to form a complete positioning hole 15. The middle magnetic conductor can be spliced back and forth. Part 530 is installed in the positioning hole 15, and the installation is very convenient.

The connecting portion 42 of the armature 4 is connected to the rear housing 19, and the two can be connected by gluing or welding. It can be understood that the rear housing 19 functions as the armature bracket 7 in this embodiment.

Example 8

Referring to Figures 32 and 33, the difference between this embodiment and Embodiment 1 is that in this embodiment, the two moving pieces and the two coils 51 of the armature 4 adopt differentiated designs, and the armature 4 is designed in one piece. The length of the first moving piece 40 is shorter than the length of the second moving piece 41, and the structure of the armature bracket 7 is also different.

For convenience of description, the coil 51 set on the first moving piece 40 is called the upper coil 51a, and the coil 51 set on the second moving piece 41 is called the lower coil 51b. The length of the upper coil 51a is shorter than the length of the lower coil 51b.

The armature bracket 7 is in the shape of a long plate and is connected to the upper surface 400 of the first moving piece 40. The two can be fixed together by gluing or welding. The armature bracket 7 is connected to the right end surface 51c of the upper coil 51a and the inner wall 1g of the housing assembly 1 through adhesive connection.

In this embodiment, the two coils 51 are respectively responsible for high-frequency and low-frequency functions. Specifically, the output of the upper coil 51a is biased toward high frequency, and the output of the lower coil 51b is biased toward low frequency. In addition, the suspended portion of the first moving piece 40 The shorter length helps to improve the high-frequency response, while the length of the suspended portion of the second moving piece 41 is significantly longer, and the connecting portion 42 can also vibrate with the second moving piece 41, which can be understood as further increasing the second The length of the moving piece 41 helps to increase the low frequency output.

In order to prevent the magnetic fields generated by the two coils 51 from affecting each other, in this embodiment, the housing assembly 1 and the armature bracket 7 are made of magnetically conductive materials, and the two are in contact with each other, so that the two moving pieces are evenly connected to the iron. The components 53 are connected magnetically, so that the two coils 51 magnetize their respective moving pieces without affecting other moving pieces, and independent control of the moving pieces can be achieved.

It can be understood that in addition to being connected to the upper coil 51a, the armature support 7 can also be connected to the lower coil 51b. For example, in one embodiment, referring to Figures 34 and 35, third arms 71 extending toward the lower coil 51b are provided on both sides of the armature bracket 7 connected to the upper surface 400 of the first moving piece 40, thereby reducing the The distance between the armature bracket 7 and the lower coil 51b enables the armature bracket 7 to be connected to the two coils 51 at the same time, making it more secure. In another embodiment, referring to Figures 36 and 37, the armature bracket 7 is connected to the lower surface 401 of the first moving piece 40. At this time, it is close to the two coils 51 and can be glued. way to connect the two coils 51.

Example 9

The difference between this embodiment and Embodiment 1 is that the structure of the housing assembly 1 , the intermediate magnetic conducting member 530 , the armature 4 and the armature bracket 7 is different from that in Embodiment 1.

As shown in Figure 38, in this embodiment, the first housing 16 and the second housing 17 are both integrally formed. This can make the structure simpler, further simplify the assembly process, and improve production efficiency.

Further, in this embodiment, the size of the outer contour of the middle magnetic conductive member 530 is the same as the outer contour size of the first housing 16 and the second housing 17. As shown in FIGS. 38 and 39, the size of the outer contour of the middle magnetic conductive member 530 is the same as that of the first housing 16 and the second housing 17. The outer edge is clamped between the first housing 16 and the second housing 17. The two housings are respectively connected to the upper and lower surfaces of the intermediate magnetic conductive member 530, and the intermediate magnetic conductive member 530, the first housing 16, and the third The outer peripheral surfaces of the two housings 17 are flush with each other.

As shown in Figures 40 and 41, the middle magnetic conductive member 530 also includes an escape hole 5300. The two coils 51 are located at positions corresponding to the escape holes 5300, and are partially located within the escape holes 5300, which can make full use of the space to accommodate larger coils. The coil helps to obtain greater output and improve efficiency.

In this embodiment, the first moving piece 40 and the second moving piece 41 of the armature 4 are independent of each other, and there is no connecting part 42 between them. The armature bracket 7 is in the shape of a long strip, and its number is two. One of the armature supports 7 is connected between the first moving piece 40 and the middle magnetic conductive member 530, and the other is connected between the second moving piece 41 and the middle magnetic conductive member 530, and is fixed by welding or gluing. .

In this embodiment, the armature bracket 7 is made of magnetically permeable material. The two moving pieces and the middle magnetically conductive piece 530 are both magnetically connected. The two coils 51 drive the corresponding moving pieces to vibrate.

It can be understood that in other embodiments, the armature bracket 7 may be a part of the middle magnetic conductive member 530 , that is, the armature bracket 7 and the middle magnetic conductive member 530 are one integrally formed part.

Example 10

The difference between this embodiment and Embodiment 1 is that the electromagnetic driving device 5 is different from that in Embodiment 1.

As shown in Figures 42 to 45, in this embodiment, the middle magnetic conductive member 530 of the electromagnetic driving device 5 is U-shaped and is provided with a notch 5301. Both sides of the middle magnetic conductive member 530 are located in the positioning holes of the housing assembly 1. Within 15.

The magnet assembly 52 includes three magnets, namely a first magnet 521, a second magnet 522 and a third magnet 523, wherein the first magnet 521 and the third magnet 523 are respectively disposed in the first receiving hole 533 and the second receiving hole 534. Specifically, the first magnet 521 is connected to the surface of the first magnetic conductive member 531 facing the middle magnetic conductive member 530 , and the third magnet 523 is connected to the surface of the second magnetic conductive member 532 facing the middle magnetic conductive member 530 . The second magnet 522 is connected to the middle magnetic conductive member 530 and is located in the gap 5301. The two magnetic poles at both ends extend into the first receiving hole 533 and the second receiving hole 534 respectively. The first magnet 521 and the third magnet 523 Both are arranged opposite to the second magnet 522 with different poles.

The electromagnetic driving device 5 includes a coil 51. As shown in FIG. 45, the coil 51 is set on the second moving piece 41. It can be understood that it can also be set on the first moving piece 40. The magnetic poles of the three magnets in this embodiment are all with S pole at the top and N pole at the bottom. After the coil 51 is energized, at least the parts of the first moving piece 40 and the second moving piece 41 located in the corresponding magnetic pole pair are polarized simultaneously. are two poles of opposite polarity.

In this embodiment, the armature 4 and the iron component 53 are connected in a non-magnetic conductive manner. For example, the housing component 1 can be made of non-magnetic conductive material. In the case where the housing assembly 1 is made of magnetically conductive material, in a preferred embodiment, the armature bracket 7 is made of non-magnetic conductive material, and is connected to the housing assembly 1 and/or the coil 51 through Adhesive connection; in another preferred embodiment, the armature bracket 7 is made of magnetically conductive material, and is connected to the housing assembly 1 and/or the coil 51 through adhesive connection, but is not connected to the housing assembly 1 Contact, connected only by glue.

After the coil 51 is energized, the magnetic induction lines generated by it pass through the air gap and the second magnet 522 from the moving piece polarized to the N pole, enter the moving piece polarized to the S pole, and then return to the polarized piece through the armature 4 It turns into a moving piece of N pole and forms a magnetic circuit.

In this embodiment, synchronous reverse driving of the first moving piece 40 and the second moving piece 41 can be achieved through one coil 51 and three magnets, which is beneficial to cost reduction and easy to control. It can be understood that in other embodiments, the space can be fully utilized to set the coils 51 on both moving pieces, thereby increasing the output and improving the efficiency. In this case, the structure can be designed such that the two moving pieces are evenly connected. The iron component 53 is non-magnetically connected, so that the two coils 51 can jointly drive the two moving pieces; or, the two moving pieces can be designed to be magnetically connected to the iron component 53, so that the two coils 51 can drive the corresponding moving pieces to vibrate. , achieving richer acoustic performance.

The present invention also provides an electronic device, which includes the above-mentioned dual-diaphragm receiver. The electronic device may be a hearing aid, a headset or a telephone, for example.

The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are deemed to be within the protection scope of the present invention.

Claims (21)

1. A dual-diaphragm receiver, characterized by including:

   The shell component (1) is provided with an inner cavity;

   A first diaphragm component (2) is located in the inner cavity and connected to the housing component (1);

   The second diaphragm assembly (3) is located in the inner cavity and connected to the housing assembly (1). The first diaphragm assembly (2) and the second diaphragm assembly (3) connect The inner cavity is divided into a first front cavity (10), a second front cavity (11), and a rear cavity (12) located between the first front cavity (10) and the second front cavity (11). ;

   The armature (4) is located in the rear cavity (12). The armature (4) includes a first moving piece (40) and a second moving piece (41) arranged oppositely. The first moving piece (41) (40) and the second moving piece (41) have both ends suspended in the air. The first moving piece (40) is drivingly connected to the first diaphragm assembly (2). The second moving piece (41) is connected in a transmission manner. 41) Transmission connection with the second diaphragm assembly (3); and,

   The electromagnetic driving device (5) is located in the rear cavity (12) and connected to the housing assembly (1). The first moving piece (40) and the second moving piece (41) both pass through Located in the electromagnetic driving device (5), the electromagnetic driving device (5) is used to drive the first moving piece (40) and the second moving piece (41) to vibrate.
2. The dual-diaphragm receiver of claim 1, wherein the electromagnetic driving device (5) includes a magnet assembly (52) and a coil (51), and the magnet assembly (52) includes a first magnetic pole pair (5a ) and a second magnetic pole pair (5b). The first magnetic pole pair (5a) and the second magnetic pole pair (5b) each include two oppositely arranged magnetic poles with different polarities. The first moving piece (40 ) and the second moving piece (41) are respectively inserted between the two magnetic poles of the first magnetic pole pair (5a) and the second magnetic pole pair (5b), and the coil (51) is sleeved on on the armature (4).
3. The dual-diaphragm receiver according to claim 2, characterized in that the electromagnetic driving device (5) includes an iron component (53), the first magnetic pole pair (5a) and the second magnetic pole pair (5b). ) is disposed on the iron assembly (53), the polarity of the first magnetic pole pair (5a) located on both sides of the first moving piece (40) and the second magnetic pole pair (5b) are located at The magnetic poles on both sides of the second moving piece (41) have the same polarity, and the first moving piece (40) and the second moving piece (41) are magnetically connected.
4. The dual-diaphragm receiver of claim 3, wherein the first movable piece (40) and the second movable piece (41) are both covered with at least one of the coils (51), and the The first moving piece (40) and the second moving piece (41) are magnetically connected to the E-iron assembly (53); or,

   The first moving piece (40) and the second moving piece (41) are each covered with at least one of the coils (51), and the first moving piece (40) and the second moving piece (41) are 41) Non-magnetic connection with the iron component (53); or,

   Only one of the first moving piece (40) and the second moving piece (41) is covered with at least one of the coils (51), and the first moving piece (40) and the second moving piece (41) are The moving piece (41) is non-magnetically connected to the iron component (53).
5. The dual-diaphragm receiver according to claim 2, characterized in that the frequency response curves output by the first diaphragm component (2) and the second diaphragm component (3) are different.
6. The dual-diaphragm receiver according to claim 2, characterized in that the electromagnetic driving device (5) includes an iron assembly (53) connected to the magnet assembly (52), and the iron assembly (53) It includes an intermediate magnetic conductive member (530) and a first magnetic conductive member (531) and a second magnetic conductive member (532) respectively connected to both sides of the intermediate magnetic conductive member (530). The intermediate magnetic conductive member (530) ) and the first magnetic conductive member (531), and a second receiving hole (533) is formed between the intermediate magnetic conductive member (530) and the second magnetic conductive member (532) (534).
7. The dual-diaphragm receiver of claim 6, wherein the magnet assembly (52) includes a first magnet (521) connected to the first magnetic conductive member (531), and a first magnet (521) connected to the middle magnetic conductive member. The second magnet (522) connected to the second magnetic conductive member (532) and the third magnet (523) connected to the second magnetic conductive member (532). The two poles of the second magnet (522) are respectively located in the first accommodation. In the hole (533) and the second receiving hole (534), the first magnet (521) and the second magnet (522) are arranged with opposite poles, and the magnetic poles of the two oppositely arranged constitute the first magnetic pole pair ( 5a), the second magnet (522) and the third magnet (523) are arranged with opposite poles, and their oppositely arranged magnetic poles constitute the second magnetic pole pair (5b).
8. The dual-diaphragm receiver of claim 6, wherein the magnet assembly (52) includes a first magnet (521), a second magnet (522), a third magnet (523) and a fourth magnet (524). ), the second magnet (522) and the third magnet (523) are respectively connected to both sides of the intermediate magnetic conductor (530), the first magnet (521) and the first magnetic conductor The member (531) is connected and arranged oppositely to the second magnet (522) with different poles. The oppositely arranged magnetic poles of the two constitute the first magnetic pole pair (5a). The fourth magnet (524) and the second magnet The magnetic conducting member (532) is connected and arranged oppositely to the third magnet (523) with opposite poles, and the oppositely arranged magnetic poles of the two constitute the second magnetic pole pair (5b).
9. The dual-diaphragm receiver according to claim 6, characterized in that the coil (5) is connected to the magnet assembly (52) and/or the iron assembly (53), and the electromagnetic driving device (5 ) is connected to the housing assembly (1) through the intermediate magnetic conductive member (530).
10. The dual-diaphragm receiver according to claim 9, characterized in that the housing assembly (1) is provided with a positioning hole (15) communicating with the rear cavity (12), and the intermediate magnetic conducting member (530 ) is installed in the positioning hole (15).
11. The dual-diaphragm receiver according to claim 10, characterized in that the housing assembly (1) includes a first housing (16) and a second housing (17) arranged along its height direction, and the Both the first housing (16) and the second housing (17) are provided with part of the positioning hole (15), and the first housing (16) and the second housing (17) are connected Finally, piece together to form the positioning hole (15); or,

    The housing assembly (1) includes a front housing (18) and a rear housing (19) arranged along its length direction. Both the front housing (18) and the rear housing (19) are provided with Part of the positioning hole (15), after the front housing (18) and the rear housing (19) are connected, are assembled to form the positioning hole (15).
12. The dual-diaphragm receiver according to claim 6, characterized in that the housing assembly (1) includes a first housing (16) and a second housing (17), and the intermediate magnetic conducting member (530) The outer edge is clamped between the first housing (16) and the second housing (17).
13. The dual-diaphragm receiver according to claim 12, characterized in that the first movable piece (40) and the second movable piece (41) are connected to the intermediate magnetic conductive member (530).
14. The dual-diaphragm receiver according to any one of claims 2 to 12, characterized in that the armature (4) includes an integral body with the first movable piece (40) and the second movable piece (41). A formed connecting part (42), at least one of the first moving piece (40), the second moving piece (41) and the connecting part (42) is connected to the coil (51) and/or the The housing assembly (1) is connected.
15. The dual-diaphragm receiver according to any one of claims 2 to 12, characterized in that it further includes an armature bracket (7) connected to the armature (4), and the armature bracket (7) is connected to the armature bracket (7). The coil (51) and/or the housing assembly (1) are connected.
16. The dual-diaphragm receiver of claim 15, wherein the first moving piece (40) and the second moving piece (41) are connected to the armature bracket (7); or,

    The armature (4) includes a connecting portion (42) integrally formed with the first moving piece (40) and the second moving piece (41). At least one of the piece (40) and the second moving piece (41) is connected to the armature bracket (7).
17. The dual-diaphragm receiver according to any one of claims 1 to 13, characterized in that the housing assembly (1) is provided with a first sound outlet (13) connected to the first front cavity (10). and a second sound outlet (14) connected to the second front cavity (11). The dual-diaphragm receiver also includes a second sound outlet connected to the housing assembly (1) and covered by the first sound outlet. (13) and the sound pipe (6) on the second sound hole (14).
18. The dual-diaphragm receiver according to any one of claims 1 to 13, characterized in that the first diaphragm assembly (2) and the second diaphragm assembly (3) both include a (1) A connected annular outer frame (30), a vibration plate (31) disposed in the outer frame (30) and one end of which is hingedly connected to the outer frame (30), and a vibration plate (31) connected to the outer frame (30). The film (32) connected to the frame (30) and the vibration plate (31), the film (32) at least covers the gap between the vibration plate (31) and the outer frame (30), so between the first moving piece (40) and the vibration plate (31) of the first diaphragm assembly (2), and between the second moving piece (41) and the second diaphragm assembly (3) The vibration plates (31) are all connected through connecting rods (43).
19. The dual-diaphragm receiver according to any one of claims 1 to 13, characterized in that the housing assembly (1) is provided with a through hole (120) communicating with the rear cavity (12).
20. The dual-diaphragm receiver according to any one of claims 1 to 13, characterized in that when the first movable piece (40) and the second movable piece (41) vibrate at the same time, the vibration directions of the two on the contrary.
21. An electronic device, characterized by comprising the dual-diaphragm receiver according to any one of claims 1 to 20.

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