CN115314812A

CN115314812A - Double-diaphragm telephone receiver and electronic equipment

Info

Publication number: CN115314812A
Application number: CN202210802631.XA
Authority: CN
Inventors: 黄环东; 张红庆
Original assignee: Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
Current assignee: Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-08
Also published as: WO2024007509A1

Abstract

The invention discloses a double-diaphragm telephone receiver and electronic equipment. The first diaphragm assembly and the second diaphragm assembly divide the inner cavity into a first front cavity, a second front cavity and a back cavity between the first front cavity and the second front cavity. The armature is arranged in the back cavity and comprises a first moving sheet and a second moving sheet which are oppositely arranged, one end of each of the first moving sheet and the second moving sheet is arranged in a suspended mode, and the first moving sheet is in transmission connection with the first vibrating diaphragm assembly and the second moving sheet is in transmission connection with the second vibrating diaphragm assembly; the electromagnetic driving device is arranged in the rear cavity and connected with the shell assembly, and the first moving piece and the second moving piece are arranged in the electromagnetic driving device in a penetrating mode and driven to vibrate by the electromagnetic driving device. The double-diaphragm telephone receiver provided by the invention is provided with two diaphragm assemblies which vibrate and produce sound, has higher sound pressure output, and is small in vibration and more stable in work.

Description

Double-diaphragm telephone receiver and electronic equipment

Technical Field

The present disclosure relates to acoustic devices, and particularly to a dual-diaphragm receiver and an electronic device.

Background

A receiver, such as a balanced armature receiver, is an electroacoustic device that converts an audio electrical signal into an acoustic signal, and is widely used in electronic devices such as hearing aids, earphones, and telephones.

Among the prior art, balanced armature formula receiver includes the ferrite subassembly of the sword, the coil, U-shaped reed and vibrating diaphragm subassembly, one in two relative lamellar bodies that set up of U-shaped reed with the ferrite subassembly fixed connection of the sword, another one end is unsettled, after the coil circular telegram, the unsettled lamellar body of reed tip is polarized to reciprocating vibration takes place under the magnetic field effect of the ferrite subassembly of the sword, the unsettled lamellar body of reed tip passes through the connecting rod and links to each other with the vibrating diaphragm subassembly simultaneously, and then drives the vibrating diaphragm subassembly vibration, the air sound production of drumming.

The number of the diaphragm assemblies in the common balanced armature type receiver is one, and some balanced armature type receivers also comprise two diaphragm assemblies which are driven by the same sheet body of the reed simultaneously.

Because two vibrating diaphragm subassemblies are driven by a lamellar body, the load that the lamellar body bore is great during consequently vibration, and two vibrating diaphragm subassemblies of balanced armature receiver can only vibrate simultaneously, and the direction of vibration is the same. On one hand, the two diaphragm assemblies cannot be independently controlled, the acoustic representation modes of the two diaphragm assemblies are not rich enough, and the occasions with higher or special requirements on the acoustic representation modes cannot be met; on the other hand, the two sets of diaphragm assemblies vibrate in the same direction, which aggravates the overall vibration of the receiver and is not beneficial to the reliable work and acoustic performance of the receiver.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

The invention aims to provide a double-diaphragm telephone receiver and electronic equipment.

In order to achieve the above object, in one aspect, the present invention provides a dual-diaphragm receiver, including:

a housing assembly having an inner cavity;

the first vibrating diaphragm assembly is arranged in the inner cavity and connected with the shell assembly;

the first diaphragm component and the second diaphragm component divide the inner cavity into a first front cavity, a second front cavity and a rear cavity positioned 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 oppositely arranged, one end of each of the first moving sheet and the second moving sheet is arranged in a suspended mode, the first moving sheet is in transmission connection with the first vibrating diaphragm assembly, and the second moving sheet is in transmission connection with the second vibrating diaphragm assembly; and the number of the first and second groups,

the electromagnetic driving device is arranged in the rear cavity and connected with the shell assembly, the first moving piece and the second moving piece penetrate through the electromagnetic driving device, and the electromagnetic driving device is used for driving the first moving piece and the second moving piece to vibrate.

Further, the electromagnetic driving device comprises a magnet assembly and a coil, the magnet assembly comprises a first magnetic pole pair and a second magnetic pole pair, the first magnetic pole pair and the second magnetic pole pair respectively comprise two magnetic poles which are oppositely arranged and have different polarities, the first moving piece and the second moving piece are respectively penetrated and arranged between the two magnetic poles of the first magnetic pole pair and the second magnetic pole pair, and the coil is sleeved on the armature.

Furthermore, the electromagnetic driving device comprises a jaw iron assembly, the first magnetic pole pair and the second magnetic pole pair are arranged on the jaw iron assembly, the polarities of the magnetic poles of the first magnetic pole pair at two sides of the first moving piece are the same as the polarities of the magnetic poles of the second magnetic pole pair at two sides of the second moving piece, and the first moving piece and the second moving piece are connected in a magnetic conduction manner;

furthermore, the first moving sheet and the second moving sheet are both sleeved with at least one coil, and the first moving sheet and the second moving sheet are connected with the jaw iron assembly in a magnetic conduction manner; alternatively, the first and second electrodes may be,

the first moving sheet and the second moving sheet are respectively sleeved with at least one coil, and the first moving sheet and the second moving sheet are in non-magnetic conduction connection with the jaw iron assembly; alternatively, the first and second electrodes may be,

only one of the first moving sheet and the second moving sheet is sleeved with at least one coil, and the first moving sheet and the second moving sheet are in non-magnetic conduction connection with the jaw iron assembly.

Further, the frequency response curves of the outputs of the first diaphragm assembly and the second diaphragm assembly are different.

Further, the electromagnetic drive device include with the magnet subassembly links to each other couth of a sword iron subassembly, couth of a sword iron subassembly includes middle magnetic conduction piece and connects respectively first magnetic conduction piece and the second magnetic conduction piece of middle magnetic conduction piece both sides, middle magnetic conduction piece with form first accommodation hole between the first magnetic conduction piece, middle magnetic conduction piece with form the second accommodation hole between the second magnetic conduction piece.

Further, the magnet subassembly include with first magnet that first magnetic conduction spare links to each other, with second magnet that middle magnetic conduction spare links to each other and with the third magnet that second magnetic conduction spare links to each other, the two poles of the earth of second magnet are located respectively in first accommodation hole and the second accommodation hole, first magnet with the heteropolarity of second magnet sets up relatively, and the magnetic pole that both set up relatively constitutes first magnetic pole pair, the second magnet with the heteropolarity of third magnet sets up relatively, and the magnetic pole that both set up relatively constitutes the second magnetic pole pair.

Further, the magnet assembly includes first magnet, second magnet, third magnet and fourth magnet, the second magnet with the third magnet connect respectively in the both sides of middle magnetic conduction piece, first magnet with first magnetic conduction piece links to each other and with the heteropolar relative setting of second magnet, and the magnetic pole that both set up relatively constitutes first magnetic pole pair, the fourth magnet with second magnetic conduction piece link to each other and with the heteropolar relative setting of third magnet, the magnetic pole that both set up relatively constitutes the second magnetic pole pair.

Further, the coil is connected with the magnet assembly and/or the jaw iron assembly, and the electromagnetic driving device is connected with the shell assembly through the intermediate magnetic conduction member.

Furthermore, the shell component is provided with a positioning hole communicated with the rear cavity, and the middle magnetic conduction piece is installed in the positioning hole.

Further, the shell assembly comprises a first shell and a second shell which are arranged along the height direction of the shell assembly, the first shell and the second shell are both provided with part of the positioning holes, and the first shell and the second shell are spliced to form the positioning holes after being connected; alternatively, the first and second electrodes may be,

the shell assembly comprises a front shell and a rear shell which are arranged along the length direction of the shell assembly, wherein the front shell and the rear shell are respectively provided with a part of the positioning hole, and the positioning holes are formed by splicing after the front shell and the rear shell are connected.

Further, the shell assembly comprises a first shell and a second shell, and the outer edge of the middle magnetic conduction piece is clamped between the first shell and the second shell.

Further, the first moving piece and the second moving piece are connected with the intermediate magnetic conduction piece.

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

Further, the dual-diaphragm receiver further comprises an armature support connected with the armature, and the armature support is connected with the coil and/or the shell assembly.

Further, the first moving piece and the second moving piece are connected to the armature holder; alternatively, the first and second liquid crystal display panels may be,

the armature comprises a connecting part which is integrally formed with the first moving piece and the second moving piece, and at least one of the connecting part, the first moving piece and the second moving piece is connected with the armature bracket.

Furthermore, the casing assembly is provided with a first sound outlet communicated with the first front cavity and a second sound outlet communicated with the second front cavity, and the double-diaphragm telephone receiver further comprises a sound outlet pipe which is connected with the casing assembly and is covered on the first sound outlet and the second sound outlet.

Further, the first diaphragm assembly and the second diaphragm assembly respectively comprise an annular outer frame body connected with the shell assembly, a diaphragm arranged in the outer frame body, one end of the diaphragm is hinged to the outer frame body, and a film connected with the outer frame body and the diaphragm, the film at least covers a gap between the diaphragm and the outer frame body, and the first moving sheet is connected with the diaphragm of the first diaphragm assembly and the second moving sheet is connected with the diaphragm of the second diaphragm assembly through a connecting rod.

Furthermore, the shell component is provided with a through hole communicated with the rear cavity.

Further, when the first moving sheet and the second moving sheet vibrate simultaneously, the vibration directions of the first moving sheet and the second moving sheet are opposite.

In another aspect, the present invention provides an electronic device, including the dual-diaphragm receiver as described in any one of the above embodiments.

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

1. according to the double-diaphragm telephone receiver, the first moving sheet and the second moving sheet with one suspended ends and the electromagnetic driving device for driving the first moving sheet and the second moving sheet to vibrate are arranged, and the first moving sheet is in transmission connection with the first diaphragm assembly, and the second moving sheet is in transmission connection with the second diaphragm assembly, so that the two diaphragm assemblies can be driven by the corresponding moving sheets to vibrate. Two motion pieces of armature can drive a vibrating diaphragm subassembly vibration respectively, abundant utilization the structure of armature self, be favorable to realizing two vibrating diaphragm subassemblies vibration more diversified, the load that the motion piece bore is little, drive power is more sufficient.

2. As the improvement, all set up at least one coil through in first motion piece and second motion piece outside to set up two motion pieces to be connected with the magnetic conduction of sword iron subassembly, can realize the coil to the independent control of the motion piece in it, thereby make two vibrating diaphragm subassemblies can be independently driven, more diversified to the control mode of vibrating diaphragm subassembly, increased the acoustics performance effect of two vibrating diaphragm receivers.

3. As the improvement, the vibration directions of the first moving sheet and the second moving sheet are opposite when vibrating simultaneously, and the vibration directions of the two vibrating diaphragm assemblies are opposite, so that the vibration transmitted to the shell assembly is offset, the vibration generated during the working of the double-vibrating diaphragm receiver can be greatly reduced, the working is more stable and reliable, the acoustic effect of the double-vibrating diaphragm receiver is favorably improved, and the performance and the use experience of the product are reduced due to the influence of the vibration. In addition, two vibrating diaphragm subassemblies vibrate the sound production simultaneously, can the effectual increase dual diaphragm receiver's sound pressure level.

4. As improvement, the frequency response curves output by the first vibrating diaphragm assembly and the second vibrating diaphragm assembly are set to be different, so that the full-frequency performance output by the double-vibrating-diaphragm receiver can be improved, and the double-vibrating-diaphragm receiver has a better acoustic effect.

Drawings

Fig. 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 sectional view of the dual-diaphragm receiver shown in fig. 1.

Fig. 4 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder in embodiment 1 of the present invention.

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

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

Fig. 7 is a schematic structural view of an armature in embodiment 1 of the invention.

Fig. 8 is a schematic view showing a structure in which an armature and an armature holder are connected in embodiment 1 of the invention.

Fig. 9 is a cross-sectional view of another orientation of the dual-diaphragm receiver shown in fig. 1.

Fig. 10 is a schematic structural diagram of a diaphragm assembly in embodiment 1 of the present invention.

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

Fig. 12 is a schematic layout of one embodiment of two sets of pole pairs in the present invention.

Fig. 13 is a schematic layout of another embodiment of two sets of pole pairs according to the present invention.

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

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

Fig. 16 is a schematic structural view of an armature in embodiment 3 of the invention.

Fig. 17 is a schematic view of connection between the electromagnetic driving device and the armature in embodiment 3 of the present invention.

Fig. 18 is a cross-sectional view of another orientation of a dual-diaphragm receiver in embodiment 3 of the present invention.

Fig. 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.

Fig. 21 is a sectional view of a dual-diaphragm receiver in embodiment 5 of the present invention.

Fig. 22 is a schematic view showing the connection of the armature and the armature holder in embodiment 5 of the invention.

Fig. 23 is a schematic structural view of an electromagnetic drive device, an armature, and an armature holder according to embodiment 5 of the present invention.

Fig. 24 is a cross-sectional view of another orientation of a dual-diaphragm receiver in embodiment 5 of the present invention.

Fig. 25 is a sectional view of a dual-diaphragm receiver in embodiment 6 of the present invention.

Fig. 26 is a schematic view showing the connection of the armature and the armature holder in embodiment 6 of the invention.

Fig. 27 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder in embodiment 6 of the present invention.

Fig. 28 is a cross-sectional view of another orientation of the dual-diaphragm receiver according to embodiment 6 of the present invention.

Fig. 29 is a schematic structural view of a dual-diaphragm receiver in embodiment 7 of the present invention.

Fig. 30 is a perspective sectional view of the front housing, the rear housing, the electromagnetic driving device, and the armature in embodiment 7 of the present invention.

Fig. 31 is a schematic view showing the connection of the armature and the rear housing in embodiment 7 of the invention.

Fig. 32 is a sectional view of an electromagnetic drive device, an armature, and an armature holder according to embodiment 8 of the invention.

Fig. 33 is a schematic view showing the connection of the armature and the armature holder in embodiment 8 of the invention.

Fig. 34 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder according to an embodiment of the present invention, in which the armature holder is attached to a lower surface of a first moving plate.

Fig. 35 is a schematic view of the armature holder and armature of fig. 34 connected together.

Fig. 36 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder according to an embodiment of the present invention, in which the armature holder is provided with a third arm portion.

Fig. 37 is a schematic view of the armature holder and armature of fig. 36 connected together.

Fig. 38 is a schematic structural view of a dual-diaphragm receiver in embodiment 9 of the present invention.

Fig. 39 is a sectional view of a dual-diaphragm receiver in embodiment 9 of the present invention.

Fig. 40 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder in embodiment 9 of the invention.

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

Fig. 42 is a sectional view of a dual-diaphragm receiver in embodiment 10 of the present invention.

Fig. 43 is a schematic structural view of an electromagnetic driving device, an armature, and an armature holder in embodiment 10 of the present invention.

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

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

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

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 application. The appearances of the 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The application discloses a dual-diaphragm receiver, refer to fig. 1 to 3, which includes a housing assembly 1, two diaphragm assemblies, an armature 4 and an electromagnetic driving device 5.

The shell assembly 1 is formed by connecting two or more shells and is provided with an inner cavity. Both diaphragm assemblies, the armature 4 and the electromagnetic drive 5 are arranged within the inner cavity. The shell assembly 1 can be made of magnetic conductive materials or non-magnetic conductive materials, when the shell assembly 1 is made of the magnetic conductive materials, the magnetic shielding effect can be achieved, and the magnetic conductive materials are preferentially adopted in occasions with requirements on magnetic leakage.

The two vibrating diaphragm assemblies are respectively a first vibrating diaphragm assembly 2 and a second vibrating diaphragm assembly 3, the first vibrating diaphragm assembly 2 and the second vibrating diaphragm assembly 3 are connected with the inner wall 1g of the shell assembly 1 and are arranged in the height direction at intervals, and preferably, the two vibrating diaphragm assemblies are arranged in parallel. The first diaphragm component 2 and the second diaphragm component 3 divide the inner cavity into a first front cavity 10, a second front cavity 11 and a back cavity 12 located between the two front cavities, wherein the first front cavity 10 is located between the top wall 1e of the first diaphragm component 2 and the shell component 1, the second front cavity 11 is located between the second diaphragm component 3 and the bottom wall 1f of the shell component 1, and the back cavity 12 is located between the two diaphragm components.

The armature 4 is used for vibrating under the driving of the electromagnetic driving device 5, and drives the first diaphragm component 2 and the second diaphragm component 3 to vibrate. The armature 4 includes a first moving piece 40 and a second moving piece 41 which are oppositely disposed, and preferably, the first moving piece 40 and the second moving piece 41 are oppositely disposed in parallel. The first moving piece 40 and the second moving piece 41 are provided with one ends hanging. The other end of the moving piece can be connected with other components, for example, it can be connected with the housing assembly 1 or with the electromagnetic driving device 5, or can be connected with both the housing assembly 1 and the electromagnetic driving device 5, and the moving piece can be directly connected with the housing assembly 1 and the electromagnetic driving device 5, or can be connected with other components (such as a connecting part 42 or an armature bracket 7 described below), so that a part of the armature 4 can be fixed relative to the housing assembly 1 and the electromagnetic driving device 5, and controlled vibration of the moving piece is facilitated. The first moving plate 40 and the first diaphragm assembly 2 and the second moving plate 41 and the second diaphragm assembly 3 are in transmission connection, and as a preferred embodiment, the transmission connection is realized by a connecting rod 43, and the connecting rod 43 is preferably connected to the suspended end of the moving plate.

Through all setting two motion pieces with the armature into the unsettled form of one end, and first vibrating diaphragm subassembly 2 and second vibrating diaphragm subassembly 3 drive the vibration by first motion piece 40 and second motion piece 41 respectively, self structure of utilization armature 4 that can be abundant, the vibration of the vibrating diaphragm subassembly that corresponds is controlled through the vibration of control motion piece, make the vibration mode of two vibrating diaphragm subassemblies more abundant, the acoustics performance form of two vibrating diaphragm receivers is more abundant, and two motion pieces drive the vibrating diaphragm subassembly vibration that self corresponds respectively, the load that the motion piece bore during vibration is little, drive power is more sufficient, two receivers work is more reliable.

In some embodiments, when the first moving sheet 40 and the second moving sheet 41 vibrate simultaneously, the vibration directions of the two are opposite, that is, the two vibrate in opposite directions. When the first moving plate 40 and the second moving plate 41 are driven by the electromagnetic driving device 5 to perform reverse vibration, the first diaphragm assembly 2 and the second diaphragm assembly 3 are driven by the two connecting rods 43 to perform reverse vibration, so that the air is blown to generate sound. Because the opposite direction when two motion pieces and two vibrating diaphragm subassemblies vibrate, consequently, two motion pieces and two vibrations that vibrating diaphragm subassembly transmitted to casing subassembly 1 are offset, and the vibrations that reduce double-vibrating diaphragm receiver that can be by a wide margin produced at the during operation, double-vibrating diaphragm receiver is more steady at the during operation, has better performance, simultaneously, because two vibrating diaphragm subassemblies are the air sound production of waving simultaneously, consequently, can increase the sound pressure level.

As a preferred embodiment, the vibration of the two moving pieces is realized by that, as shown in fig. 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, namely a first magnetic pole pair 5a and a second magnetic pole pair 5b, and the two sets of magnetic pole pairs each include two magnetic poles which are oppositely arranged and have different polarities, that is, each set of magnetic pole pairs is provided with an N pole and an S pole which are oppositely arranged. The first moving piece 40 and the second moving piece 41 are respectively arranged between two magnetic poles of the first magnetic pole pair 5a and the second magnetic pole pair 5b in a penetrating manner, the coil 51 is sleeved on the armature 4 and is used for generating a magnetic field for polarizing the first moving piece 40 and the second moving piece 41, and after the coil 51 is electrified, at least the part of the first moving piece 40, which is positioned in the first magnetic pole pair 5a, and the part of the second moving piece 41, which is positioned in the second magnetic pole pair 5b, are polarized. When the moving sheet is not polarized, it is in a balanced state between two magnetic poles, when the portions of first moving sheet 40 and second moving sheet 41 in the magnetic pole pair are polarized, the magnetic pole of one side of the moving sheet will apply magnetic attraction force to it, and the magnetic pole of the other side will apply magnetic repulsion force to it, so that the moving sheet is driven to deflect to one side, furthermore, when the polarity of the portion of the moving sheet in the magnetic pole pair is changed, the moving sheet will be subjected to reverse magnetic force, so that it deflects to the other side, and by changing the current direction in coil 51, the magnetic field direction produced by it is changed, so that the polarity of the moving sheet can be changed, so that the moving sheet is driven to make reciprocating vibration.

In some embodiments, the polarities of the magnetic poles of the first magnetic pole pair 5a located on both sides of the first moving piece 40 are the same as the polarities 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 magnetic poles of the first magnetic pole pair 5a located on both sides of the first moving piece 40 are respectively an N pole and an S pole, the magnetic poles of the second magnetic pole pair 5b located on both sides of the second moving piece 41 are also respectively an N pole and an S pole, as shown in fig. 12; on the contrary, when the magnetic poles of the first magnetic pole pair 5a located at the upper and lower sides of the first moving piece 40 are the S pole and the N pole, respectively, the magnetic poles of the second magnetic pole pair 5b located at the upper and lower sides of the second moving piece 41 are also the S pole and the N pole, respectively, as shown in fig. 13. In these embodiments, when the coil 51 is energized, at least the portions of the two moving blades located in the magnetic pole pair are polarized, and when the portions of the two moving blades located in the magnetic pole pair are polarized to different polarities, i.e., to N-pole and S-pole, respectively, the two moving blades are subjected to magnetic forces in opposite directions to perform opposite movements. It is understood that the number of the coils 51 is not limited, for example, the coils 51 may be provided outside only one moving sheet (the number of the coils 51 sleeved outside the same moving sheet is not limited to one), in this case, two moving sheets should be connected by a magnetic conductive material, and for example, the coils 51 may be provided outside both moving sheets. It can be understood that the coil 51 is sleeved outside the moving sheet, and it does not contact with the moving sheet, and a certain gap is reserved between the coil 51 and the moving sheet to ensure that the moving sheet has enough space to freely vibrate.

The magnetic pole pair can be formed by arranging magnets oppositely arranged, for example, as shown in fig. 4 and 5, the blade ferromagnetic assembly includes four magnets arranged in parallel and spaced, and a first magnet 521, a second magnet 522, a third magnet 523 and a fourth magnet 524 sequentially from top to bottom, wherein the first magnet 521 and the second magnet 522 are oppositely arranged, and two magnetic poles (in the figure, the N pole of the first magnet 521 and the S pole of the second magnet 522) oppositely arranged form the first magnetic pole pair 5a. The third magnet 523 and the fourth magnet 524 are oppositely disposed in opposite polarities, and the two oppositely disposed magnetic poles (in the figure, the N-pole of the third magnet 523 and the S-pole of the fourth magnet 524) form the second magnetic pole pair 5b described above. For another example, as shown in fig. 43 and 45, in some embodiments, the magnet assembly 52 includes three magnets arranged in parallel and spaced apart from each other, and the first magnet 521, the second magnet 522 and the third magnet 523 are arranged in sequence from top to bottom, wherein the first magnet 521 and the second magnet 522 are oppositely arranged in different poles, and two oppositely arranged magnetic poles (in the figure, the N pole of the first magnet 521 and the S pole of the second magnet 522) form the above-mentioned first magnetic pole pair 5a, and similarly, the second magnet 522 and the third magnet 523 are oppositely arranged in different poles, and two oppositely arranged magnetic poles (in the figure, the N pole of the second magnet 522 and the S pole of the third magnet 523) form the above-mentioned second magnetic pole pair 5b.

The sword iron assembly 53 adopts magnetic conductive material to make, and foretell magnet all links to each other with sword iron assembly 53, constitutes magnetic conduction return circuit through sword iron assembly 53, improves magnetic conduction efficiency, and then improves the drive power to the motion piece, improves the sensitivity of two vibrating diaphragm receivers. The blade iron assembly 53 and the magnet assembly 52 form a blade iron magnet assembly, the blade iron magnet assembly is connected with the shell assembly 1 through the blade iron assembly 53, the coil 51 is connected with the blade iron magnet assembly, as shown in fig. 5, the left end face of the coil 51 is connected with the right end face of the blade iron magnet assembly, specifically, the coil 51 can be connected with one of the magnet assembly 52 and the blade iron assembly 53, or both, the connection mode is for example adhesive connection, so that the connection of the whole electromagnetic driving device 5 and the shell assembly 1 can be fixed.

The armature 4 may be connected to the housing assembly 1 or the coil 51, or both the housing assembly 1 and the coil 51, and the portion connected to the housing assembly 1 or the coil 51 is fixed relative to the housing assembly 1 and the coil 51, and is a fixed portion thereof, and normally, the fixed portion and the free end of the moving piece are respectively located at both sides of the coil 51, so that the moving piece has a longer free 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 of the armature 4 to the housing assembly 1 may be achieved by one or more of the first moving piece 40, the second moving piece 41, and the connecting portion 42 being connected 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 holder 7, and the armature holder 7 may be connected to right end portions (ends opposite to the free ends) of the first moving piece 40 and the second moving piece 41, and in the case where the armature 4 is provided with the connecting portion 42, as shown in fig. 8, 22, and 33, the armature holder 7 may be further connected to one or more of the connecting portion 42, the first moving piece 40, and the second moving piece 41. The armature 4 is connected to the coil 51 and/or the housing component 1 via the armature holder 7, so that the connection to the housing component 1 is achieved.

As a preferred embodiment, the dual diaphragm receiver further comprises a sound outlet tube 6 connected to the housing assembly 1, and the housing assembly 1 is provided with a first sound outlet hole 13 communicating with the first front cavity 10 and a second sound outlet hole 14 communicating with the second front cavity 11. The sound outlet pipe 6 is covered on the first sound outlet hole 13 and the second sound outlet hole 14, so that the sound emitted from the first sound outlet hole 13 and the second sound outlet hole 14 can be emitted after being converged in the sound outlet pipe 6, and the double-diaphragm telephone receiver can generate sound through the vibration of the two diaphragm components, so that the sound pressure level can be obviously improved.

In some embodiments, only one of the first moving plate 40 and the second moving plate 41 is sleeved with the coil 51, and the first moving plate 40 and the second moving plate 41 are magnetically connected, for example, the armature 4 is integrally formed and made of a magnetically conductive material, or the two moving plates are independent parts and are connected through the armature bracket 7 made of a magnetically conductive material, so that the magnetically conductive connection of the two moving plates is realized. Meanwhile, the first moving piece 40 and the jaw iron assembly 53 and the second moving piece 41 and the jaw iron assembly 53 are connected in a non-magnetic manner, for example, the casing assembly 1 is made of a non-magnetic material, or in the case that the casing assembly 1 is made of a magnetic material, the two moving pieces and the casing assembly 1 are connected in a non-magnetic manner. At this time, after the coil 51 is energized, the two moving sheets are polarized at the same time, and the portions of the two moving sheets located in the magnetic pole pair are polarized to two poles with opposite polarities, so that the coil 51 can control the two moving sheets at the same time.

In some embodiments, the first moving sheet 40 and the second moving sheet 41 which are magnetically connected are both sleeved with a coil 51, and the first moving sheet 40 and the second moving sheet 41 are both magnetically connected with the jaw iron assembly 53, for example, the housing assembly 1 is made of a magnetic conductive material, the jaw iron assembly 53 and both the moving sheets are both magnetically connected with the housing assembly 1, so as to achieve the magnetic connection between the two moving sheets and the jaw iron assembly 53, at this time, after the coil 51 is energized, the two moving sheets respectively form a magnetic circuit between the housing assembly 1 and the jaw iron assembly 53, and the two coils 51 only polarize the moving sheets therein, so that the two coils 51 can respectively and independently drive the respective sleeved moving sheets to vibrate, that is, the two coils 51 can independently control the two diaphragm assemblies to vibrate, so that the diaphragm assemblies can vibrate in a more various vibration modes, for example, only one diaphragm assembly can vibrate, and the other diaphragm assembly does not vibrate; for another example, two diaphragm assemblies may be vibrated at intervals; in another example, two diaphragm assemblies may be vibrated simultaneously. When two vibrating diaphragm subassemblies reverse vibration simultaneously, can effectually alleviate the vibrations of two vibrating diaphragm receivers, make its work more steady.

In some embodiments, the first moving sheet 40 and the second moving sheet 41 which are magnetically connected to each other are sleeved with a coil 51, and the first moving sheet 40 and the second moving sheet 41 are magnetically non-conductive connected to the yoke assembly 53, and both the coils 51 can polarize the two moving sheets simultaneously, so that the portions of the two moving sheets located in the magnetic pole pair are polarized into two poles with opposite polarities, thereby realizing the common driving of the two moving sheets. When the two coils 51 are energized simultaneously, the driving force can be increased; two coils 51 can work in turn, so that the service life of the whole machine is prolonged.

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 assembly 2 and the second diaphragm assembly 3 are different, for example, the output of one diaphragm assembly is biased to a high frequency, and the output of the other diaphragm assembly is biased to a low frequency, so that the frequency response curve of the whole frequency band is better, thereby improving the acoustic performance.

It will be appreciated that since the armature 4 has two moving plates for driving the two diaphragm assemblies to vibrate, the acoustic performance of the moving plates can be changed by designing the structure of the moving plates, for example, the first moving plate 40 and the second moving plateOne of the plates 41 is provided to be biased toward high frequencies, and the other is provided to be biased toward low frequencies, thereby achieving more excellent full-frequency performance. The main mode frequency f of the motion sheet can be improved by increasing the stiffness coefficient of the motion sheet (for example, increasing the thickness of the motion sheet, reducing the length of the motion sheet) and reducing the dynamic quality of the motion sheet ₀ So as to have better high-frequency output, and the main modal frequency f of the moving sheet can be reduced by reducing the stiffness coefficient of the moving sheet (for example, reducing the thickness of the moving sheet, increasing the length of the moving sheet) and increasing the mass of the moving sheet ₀ So that the low-frequency output is better.

The frequency response curve of the diaphragm assembly can be changed by changing the mass of the diaphragm 31 of the diaphragm assembly, so that the increase of the mass of the diaphragm 31 can reduce the high-frequency output, and the bandwidth is also reduced; conversely, decreasing the mass of the vibration plate 31 can improve the high frequency output and increase the bandwidth.

Further, in the case where the coil 51 is provided outside both the first moving sheet 40 and the second moving sheet 41 and the coil 51 can independently control the two moving sheets, the output performance of the coil 51 in different frequency bands can be changed by adjusting the coil 51, specifically, by adjusting the ratio of the resistance to the square of the number of turns of the coil 51 (DCR/N) ² ) The high frequency output and the low frequency output of the coil 51 can be adjusted, and in general, increasing the ratio of the resistance to the square of the number of turns increases the high frequency output but decreases the low frequency output, and decreasing the ratio of the resistance to the square of the number of turns increases the low frequency output but decreases the high frequency output. For example, the number of turns of the coil may be reduced to increase the ratio while maintaining the resistance constant, and conversely, increasing the number of turns may significantly decrease the ratio.

In conclusion, the frequency response curve of the vibrating diaphragm assembly can be adjusted by adjusting the structural parameters of the moving sheet, the coil 51 and the vibrating diaphragm assembly, and the two vibrating diaphragm assemblies are set to be in different frequency response curves, so that the outputs of the two vibrating diaphragm assemblies can be matched with each other, better full-frequency response and better bandwidth are realized, and thus, the double-vibrating-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 formed with a through hole 120 communicating with the rear cavity 12 to reduce the rear cavity stiffness and increase the low frequency output. Preferably, through holes 120 are formed on both sides of the housing assembly 1, and the through holes 120 on both sides are symmetrically formed. It is further preferable that the through hole 120 is provided at a position near the rear end of the housing assembly 1, for example, at a position corresponding to the armature holder 7 or the connecting portion 42.

The invention is described in further detail below with reference to specific examples.

Example 1

As shown in fig. 1 to 11, the 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 comprises a first housing 16 and a second housing 17, the first housing 16 comprises an independently arranged upper cover 1a and an upper frame 1b connected with the upper cover 1a, the second housing 17 comprises a second frame 1c and a lower cover 1d connected with the second housing 1c, the upper cover 1a, the upper frame 1b, the lower frame 1c and the lower cover 1d are sequentially arranged from top to bottom, and two adjacent components are connected in an adhesive or welding manner. The upper frame 1b and the lower frame 1c are both annular, and 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 1 c.

The electromagnetic drive 5 includes a yoke ferromagnetic assembly, as shown in fig. 4 to 6, which includes a yoke assembly 53 and a magnet assembly 52 connected to the yoke assembly 53. The yoke assembly 53 includes an intermediate magnetic conductive member 530, and a first magnetic conductive member 531 and a second magnetic conductive member 532 respectively connected to two sides of the intermediate magnetic conductive member 530, and preferably, the first magnetic conductive member 531 and the second magnetic conductive member 532 are symmetrically disposed on two sides of the intermediate magnetic conductive member 530. The intermediate magnetic conductive member 530 is plate-shaped, the first magnetic conductive member 531 and the second magnetic conductive member 532 are U-shaped, and a first accommodation hole 533 and a second accommodation hole 534 are formed between the first and second magnetic conductive members and the intermediate magnetic conductive member 530, respectively.

The magnet assembly 52 includes four plate-shaped magnets, a first magnet 521, a second magnet 522, a third magnet 523, and a fourth magnet 524, respectively. The first magnet 521 and the second magnet 522 are disposed in the first accommodation hole 533 with opposite poles facing each other. The first magnet 521 is attached to a surface of the first magnetic conductive member 531 facing the intermediate magnetic conductive member 530, and the second magnet 522 is attached to a surface of the intermediate magnetic conductive member 530 facing the first magnetic conductive member 531. The third magnet 523 and the fourth magnet 524 are disposed in the second accommodation hole 534 with opposite poles. The third magnet 523 is attached to the surface of the intermediate magnetically permeable member 530 facing the second magnetically permeable member 532 and the fourth magnet 524 is attached to the surface of the second magnetically permeable member 532 facing the intermediate magnetically permeable member 530.

The electromagnetic driving device 5 is connected to the housing assembly 1 through the intermediate magnetic conducting member 530, specifically, as shown in fig. 1, the housing assembly 1 is provided with a positioning hole 15 communicated with the rear cavity 12, and the intermediate magnetic conducting member 530 protrudes to the outside of the first magnetic conducting member 531 and the second magnetic conducting member 532, is installed in the positioning hole 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 at two sides thereof, so that two ends of the middle magnetic conducting member 530 can be fixed, and the stability is better. In order to facilitate the connection between the intermediate magnetic conduction member 530 and the positioning hole 15, as shown in fig. 2, the first casing 1b and the second casing 1c are both provided with a portion of the positioning hole 15, and after the two intermediate casings are connected together, the two intermediate casings can be spliced to form a complete positioning hole 15, so that the intermediate magnetic conduction member 530 can be clamped in the positioning hole 15 in an up-and-down splicing manner.

As shown in fig. 7, the armature 4 includes a first moving plate 40, a second moving plate 41 and a connecting portion 42 connected between the first moving plate 40 and the second moving plate 41, which are oppositely disposed, and the first moving plate 40, the second moving plate 41 and the connecting portion 42 are integrally formed, for example, the armature 4 may be formed by bending. The armature 4 is made of a magnetically conductive material so that it can be polarized by the energized coil 51. As shown in fig. 8, the dual-diaphragm receiver further includes an armature holder 7 connected to the armature 4, and specifically, the armature holder 7 is connected to the outer surface 422 of the connecting portion 42, for example, by gluing or welding.

The armature support 7 comprises two first arm parts 70 extending to two sides of the connecting part 42, the first arm parts 70 are connected with the coil 51 and the inner wall 1g of the housing component 1 through glue, and as shown in fig. 9, the glue of the first arm parts 70 with the coil 51 and the inner wall 1g of the housing component 1 forms a glue block 9. Since the additional armature holder 7 is provided, the height of the arm portion 70 thereof can be set larger than the height of the armature 4 as a whole, thereby increasing the connection area between the first arm portion 70 and the coil 51 and the housing assembly 1 and improving the firmness of the connection.

The electromagnetic driving device 5 includes two coils 51, the two coils 51 are connected to the end surface of the yoke ferromagnetic member facing the coils 51, the inner holes 510 of the two coils 51 are aligned with the first receiving hole 533 and the second receiving hole 534, respectively, the first moving plate 40 is inserted into the coils 51 and the first receiving hole 533, and the second moving plate 41 is inserted into the other coils 51 and the second receiving hole 534. In this embodiment, the magnetic poles of the magnets are arranged in the same direction, i.e., the N pole is on the lower side and the S pole is on the upper side, (in other embodiments, the S pole may also be on the upper side and the N pole is on the lower side), and the magnetic poles with the same polarity face the same direction, so that the magnet assembly 52 is magnetized, and after the coil 51 is energized, the portions of the two moving pieces located in the two receiving holes are polarized to have two opposite polarities.

Both the two moving sheets have a part extending out of the blade iron magnetic component, the part penetrating out of the blade iron magnetic component is connected with the connecting rod 43, and the other end of the connecting rod 43 is connected with the vibrating diaphragm component.

Preferably, the first diaphragm assembly 2 and the second diaphragm assembly 3 are symmetrically disposed within the housing assembly 1. As shown in fig. 10 and 11, each of the two diaphragm assemblies includes an annular outer frame 30 connected to the casing assembly 1, a diaphragm 31 disposed in the outer frame 30, and a film 32 connected to the outer frame 30 and the diaphragm 31, one end of the diaphragm 31 is hinged to the outer frame 30, and a gap is provided between the outer periphery of the diaphragm 31 and the outer frame 30, so that the diaphragm 31 can move relative to the outer frame 30 with a connecting portion 34 of the diaphragm 31 and the outer frame 30 as a hinge. The film 32 covers at least 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 gluing. When the motion piece moves, the link 43 drives the vibration plate 31 to move synchronously. Further, the first diaphragm assembly 2 and the second diaphragm assembly 3 further include an annular frame 33, the annular frame 33 is fixed on the inner wall 1g of the housing assembly 1, and cooperates with the outer frame 30 to clamp the outer edge of the film 32, so as 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 fig. 1 and 3, the dual diaphragm receiver further 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, and the housing assembly 1 is provided with a first sound outlet hole 13 communicated with the first front cavity 10 and a second sound outlet hole 14 communicated with the second front cavity 11. The sound outlet pipe 6 is covered on the first sound outlet hole 13 and the second sound outlet hole 14, and the sound cavity 60 of the sound outlet pipe is communicated with the two sound outlet holes, so that the sound emitted from the first sound outlet hole 13 and the second sound outlet hole 14 can be converged in the sound outlet pipe 6 and then emitted, and the sound pressure output can be increased.

As shown in fig. 3, the dual-diaphragm receiver further includes a connection terminal 8, and the connection terminal 8 and the sound outlet tube 6 are respectively located at two ends of the housing assembly 1. The outgoing line of the coil 51 is connected with the wiring terminal 8, and is electrically connected with an external control device through the wiring terminal 8, so that the double-diaphragm telephone receiver can be driven, and wiring is facilitated.

In this embodiment, the armature support 7 may be made of a magnetic conductive material or a non-magnetic conductive material, when the housing assembly 1 and the armature support 7 are made of a magnetic conductive material and a magnetic conductive connection is formed between the armature support 7 and the housing assembly 1, a magnetic conductive connection is formed between the armature 4 and the jaw assembly 53, and at this time, a magnetic induction line generated by energizing the coil 51 forms a magnetic loop through the armature 4, the armature support 7, the housing assembly 1, and the jaw assembly 53. For example, when the portion of the first moving plate 40 located in the first pole pair 5a is polarized to N pole, the magnetic induction line is emitted through the N pole of the first moving plate 40, passes through the air gap, enters the intermediate magnetic conductive member 530 through the second magnet 522, and then returns to the first moving plate 40 from the connecting portion 42 through the housing assembly 1 and the armature holder 7, thereby forming a magnetic circuit. In this case, the two coils 51 are respectively used for polarizing the surrounding moving sheets, so that independent control over the two moving sheets can be realized, the vibration mode of the vibrating diaphragm assembly is more various, and the acoustic performance effect of the dual-diaphragm receiver is richer.

When the armature support 7 is made of non-magnetic material, the armature 4 and the jaw iron assembly 53 are connected in a non-magnetic conductive manner, and at this time, the magnetic induction lines generated by energizing the coil 51 are emitted from the moving piece polarized to the N pole, and after passing through the air gap between the two moving pieces, the two magnets and the intermediate magnetic conductive member 530, enter the moving piece polarized to the S pole, and then return to the N pole in the armature 4 to form a magnetic circuit. Each coil 51 is capable of polarizing two moving pieces, and portions of the two moving pieces located between the two receiving holes are polarized to opposite polarities, and thus are vibrated in opposite directions by the magnetic field of the magnet assembly 52.

Example 2

The present embodiment is different from embodiment 1 in that the dual-diaphragm receiver of the present embodiment includes only one coil 51, as shown in fig. 14, and the coil 51 surrounds the outside of the first moving sheet 40. In this embodiment, the armature support 7 is magnetically non-conductive connected to the housing assembly 1, and the coil 51 can polarize two moving pieces at the same time, thereby realizing the reverse vibration of the two moving pieces. Similarly, in other embodiments, the coil 51 may also be sleeved on the second moving piece 41.

Example 3

The present embodiment is different from embodiment 1 in that the structure of the armature 4 is different from that in embodiment 1.

As shown in fig. 15 to 18, in the present embodiment, the dual-diaphragm receiver does not have the armature holder 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 second arm portions 420 and the two coils 51 are connected with the inner wall 1g of the housing assembly 1 by gluing, and as shown in fig. 17 and 18, the joints of the second arm portions 420 and the coils 51 and the housing assembly 1 form the rubber blocks 9.

Because armature bracket 7 is omitted in the double-diaphragm telephone receiver, armature bracket 7 does not need to be welded on armature 4, the structure is simpler, the assembly process can be simplified, and the cost is reduced.

Example 4

The present embodiment is different from embodiment 3 in that the structure of the housing assembly 1 is different from that in embodiment 3.

As shown in fig. 19 and 20, in the present 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, so that the assembly process can be further simplified, and the production efficiency can be improved.

Further, one through hole 120 is opened at both side surfaces of the first housing 1a and both side surfaces of the second housing 1b, and preferably, the through holes 120 at both sides are symmetrically disposed and disposed at positions corresponding to the connecting portions 42 of the armature 4, so that stiffness of the rear chamber 12 can be reduced and low frequency output can be increased.

The through-hole 120 is preferably circular and has a diameter of 0.05mm to 1mm.

Example 5

The present embodiment is different from embodiment 1 in that the structure of the armature holder 7 is different from that in embodiment 1.

As shown in fig. 21 to 24, in the present embodiment, the armature holder 7 has an elongated plate shape and is attached to the inner surface 421 of the connecting portion 42 of the armature 4 by, for example, adhesive bonding or welding. The armature support 7 is connected to the two coils 51 and the inner wall 1g of the housing assembly 1 by gluing, fig. 23 and 24 showing the glue slug 9 at the connection. It is understood that in other embodiments, the armature support 7 may be disposed outside the connecting portion 42 and connected to the outer surface 422 of the connecting portion 42, the inner surface 421 of the connecting portion 42 is connected to the coil 51 by adhesive, and the armature support 7 and the housing assembly 1 are connected by adhesive.

Example 6

The present embodiment is different from embodiment 5 in that the structure of the armature 4 is different from that in embodiment 5.

As shown in fig. 25 to 28, in the present embodiment, the first moving piece 40 and the second moving piece 41 of the armature 4 are independent from each other with no connecting portion 42 provided therebetween. The first moving piece 40 and the second moving piece 41 are connected by the armature yoke 7 having a long plate shape, and are connected to the center positions of the upper surface and the lower surface of the armature yoke 7, respectively.

The armature support 7 is connected to the two coils 51 and the inner wall 1g of the housing assembly 1 by gluing, and fig. 27 and 28 show the glue slug 9 at the connection.

In this embodiment, the armature holder 7 is made of a magnetic conductive material.

Example 7

The present embodiment is different from embodiment 1 in that the structure of the housing assembly 1 in the present embodiment is different from that in embodiment 1.

As shown in fig. 29 to 31, in the present embodiment, the housing assembly 1 includes an upper cover 1a, a front housing 18 (the end where the sound outlet pipe 6 is located is the front end), a rear housing 19, and a lower cover 1d. Wherein, the front shell 18 and the rear shell 19 are arranged along the length direction of the shell component 1, the front shell and the rear shell are butted to form a ring-shaped shell, the upper cover 1a and the lower cover 1d are respectively connected with the upper end and the lower end of the ring-shaped shell, and the openings at the two ends of the ring-shaped shell are sealed.

The front shell 18 and the rear shell 19 are both provided with partial positioning holes 15, when the front shell 18 and the rear shell 19 are connected, the front shell 18 and the rear shell are matched with each other to form a complete positioning hole 15, the middle magnetic conduction piece 530 can be installed in the positioning holes 15 in a front-back splicing mode, and installation is very convenient.

The connecting portion 42 of the armature 4 is connected to the rear housing 19, and the two portions may be connected by gluing or welding. It will be appreciated that the rear housing 19 functions as the armature holder 7 in this embodiment.

Example 8

Referring to fig. 32 and 33, the present embodiment is different from embodiment 1 in that the two moving pieces and the two coils 51 of the armature 4 are designed differently in the present embodiment, the armature 4 is designed as an integral body, the length of the first moving piece 40 is shorter than that of the second moving piece 41, and the structure of the armature holder 7 is also different.

For convenience of description, the coil 51 fitted over the first moving piece 40 is referred to as an upper coil 51a, and the coil 51 fitted over the second moving piece 41 is referred to as a lower coil 51b. The length of the upper coil 51a is shorter than the length of the lower coil 51b.

The armature holder 7 has an elongated plate shape and is attached to the upper surface 400 of the first moving piece 40, and the two are fixed together by gluing or welding. The armature holder 7 is connected to the right end face 51c of the upper coil 51a and the inner wall 1g of the housing assembly 1 by gluing.

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 to high frequency, and the output of the lower coil 51b is biased to low frequency, in addition, the length of the suspended portion of the first moving plate 40 is shorter, which is helpful for improving high frequency response, while the length of the suspended portion of the second moving plate 41 is significantly longer, and the connecting portion 42 can also vibrate along with the second moving plate 41, which can be understood as further increasing the length of the second moving plate 41, which is helpful for increasing 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 support 7 are made of magnetic conductive materials, and the two are abutted against each other, so that the two moving sheets are magnetically connected to the jaw assembly 53, and thus, the two coils 51 magnetize the corresponding moving sheets respectively, and do not affect other moving sheets, and independent control over the moving sheets can be realized.

It will be appreciated that the armature support 7 may be connected to the lower coil 51b in addition to the upper coil 51 a. For example, in one embodiment, referring to fig. 34 and 35, third arm portions 71 extending toward the lower coil 51b are provided at both sides of the armature holder 7 coupled to the upper surface 400 of the first moving plate 40, thereby reducing the distance between the armature holder 7 and the lower coil 51b, so that the armature holder 7 can be coupled to two coils 51 at the same time, more firmly. In another embodiment, referring to fig. 36 and 37, the armature holder 7 is attached to the lower surface 401 of the first moving plate 40, which is located closer to both the coils 51, and the two coils 51 may be connected by gluing.

Example 9

The present embodiment is different from embodiment 1 in that the housing assembly 1, the intermediate magnetic conductive member 530, the armature 4, and the armature holder 7 are different from those of embodiment 1.

As shown in fig. 38, in the present embodiment, the first housing 16 and the second housing 17 are integrally formed, so that the structure is simpler, the assembly process can be further simplified, and the production efficiency can be improved.

Further, in the present embodiment, the size of the outer contour of the intermediate magnetic conducting member 530 is the same as the size of the outer contour of the first casing 16 and the second casing 17, as shown in fig. 38 and 39, the outer edge of the intermediate magnetic conducting member 530 is clamped between the first casing 16 and the second casing 17, the two casings are respectively connected to the upper and lower surfaces of the intermediate magnetic conducting member 530, and the outer peripheral surfaces of the intermediate magnetic conducting member 530, the first casing 16, and the second casing 17 are flush with each other.

As shown in fig. 40 and 41, the middle magnetic conductive member 530 further includes an avoiding hole 5300, and the two coils 51 are disposed at positions corresponding to the avoiding hole 5300 and partially disposed in the avoiding hole 5300, so that a space can be fully utilized to accommodate a larger coil, which is beneficial to obtaining a larger output and improving efficiency.

In this embodiment, the first moving plate 40 and the second moving plate 41 of the armature 4 are independent from each other, the connecting portion 42 is not provided between the two moving plates, the armature brackets 7 are long and have two lengths, one of the two armature brackets 7 is connected between the first moving plate 40 and the intermediate magnetic conductive member 530, and the other armature bracket is connected between the second moving plate 41 and the intermediate magnetic conductive member 530, and is fixed by welding or gluing.

In this embodiment, the armature support 7 is made of a magnetic conductive material, the two moving plates and the middle magnetic conductive member 530 are both magnetically connected, and the two coils 51 respectively drive the corresponding moving plates to vibrate.

It is understood that in other embodiments, the armature holder 7 may be a part of the intermediate magnetic conductive member 530, i.e., the armature holder 7 and the intermediate magnetic conductive member 530 are integrally formed as one piece.

Example 10

The present embodiment is different from embodiment 1 in that an electromagnetic driving device 5 thereof is different from that in embodiment 1.

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

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 accommodating hole 533 and the second accommodating hole 534, specifically, the first magnet 521 is attached to a surface of the first magnetic conductive member 531 facing the intermediate magnetic conductive member 530, and the third magnet 523 is attached to a surface of the second magnetic conductive member 532 facing the intermediate magnetic conductive member 530. The second magnet 522 is connected to the middle magnetic conductive member 530 and disposed in the notch 5301, two magnetic poles at two ends of the second magnet extend into the first accommodation hole 533 and the second accommodation hole 534, the first magnet 521 and the third magnet 523 are disposed opposite to the second magnet 522 in opposite polarity,

the electromagnetic driving device 5 includes a coil 51, as shown in fig. 45, the coil 51 is sleeved on the second moving plate 41, it can be understood that it can also be arranged on the first moving plate 40. In the present embodiment, the magnetic poles of the three magnets are all with the S pole up and the N pole down, and after the coil 51 is energized, at least the portions of the first moving piece 40 and the second moving piece 41 located in the corresponding magnetic pole pairs are simultaneously polarized to the two poles with opposite polarities.

In this embodiment, the armature 4 and the yoke assembly 53 are non-magnetically coupled, for example, the housing assembly 1 may be made of a non-magnetically conductive material. In the case of a housing assembly 1 made of magnetically conductive material, in a preferred embodiment, the armature support 7 is made of a magnetically non-conductive material, which is adhesively connected to the housing assembly 1 and/or the coil 51; in another preferred embodiment, the armature support 7 is made of a magnetically conductive material, which is connected to the housing assembly 1 and/or the coil 51 by gluing, but not to the housing assembly 1, but only by glue.

When the coil 51 is energized, the magnetic induction lines generated by the coil 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 moving piece polarized to the N pole through the armature 4, thereby forming a magnetic circuit.

In this embodiment, the first moving plate 40 and the second moving plate 41 can be driven in reverse synchronously by one coil 51 and three magnets, which is beneficial to reducing the cost and facilitating the control. It can be understood that, in other embodiments, the two moving sheets can be sleeved with the coils 51 by fully utilizing the space, so as to increase the output and improve the efficiency, and at this time, the two moving sheets can be designed to be non-magnetically connected with the jaw iron assembly 53, so that the two coils 51 can drive the two moving sheets together; or, design into two motion pieces all with the sword iron subassembly 53 magnetic conduction and be connected, realize that two coils 51 drive the motion piece vibration that corresponds respectively, realize abundanter acoustic performance.

The invention also provides electronic equipment which comprises the double-diaphragm telephone receiver. The electronic device may be, for example, a hearing aid, an earphone or a telephone.

The above is only a specific embodiment of the present invention, and any other modifications based on the concept of the present invention are considered as the protection scope of the present invention.

Claims

1. A dual-diaphragm receiver is characterized by comprising:

a housing assembly (1) provided with an inner cavity;

the first vibrating diaphragm component (2) is arranged in the inner cavity and connected with the shell component (1);

the second diaphragm component (3) is arranged in the inner cavity and connected with the shell component (1), and the first diaphragm component (2) and the second diaphragm component (3) divide the inner cavity into a first front cavity (10), a second front cavity (11) and a rear cavity (12) between the first front cavity (10) and the second front cavity (11);

the armature (4) is arranged in the rear cavity (12), the armature (4) comprises a first moving sheet (40) and a second moving sheet (41) which are arranged oppositely, the first moving sheet (40) and the second moving sheet (41) are arranged in a suspended mode, the first moving sheet (40) is in transmission connection with the first diaphragm assembly (2), and the second moving sheet (41) is in transmission connection with the second diaphragm assembly (3); and (c) a second step of,

the electromagnetic driving device (5) is arranged in the rear cavity (12) and connected with the shell assembly (1), the first moving piece (40) and the second moving piece (41) are arranged in the electromagnetic driving device (5) in a penetrating mode, and the electromagnetic driving device (5) is used for driving 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) comprises a magnet assembly (52) and a coil (51), the magnet assembly (52) comprises a first magnetic pole pair (5 a) and a second magnetic pole pair (5 b), the first magnetic pole pair (5 a) and the second magnetic pole pair (5 b) each comprise two magnetic poles which are oppositely arranged and have 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 (5 a) and the second magnetic pole pair (5 b), and the coil (51) is sleeved on the armature (4).

3. The dual diaphragm receiver of claim 2, wherein the electromagnetic driving device (5) includes a jaw iron assembly (53), the first magnetic pole pair (5 a) and the second magnetic pole pair (5 b) are disposed on the jaw iron assembly (53), the polarities of the magnetic poles of the first magnetic pole pair (5 a) on both sides of the first moving plate (40) are the same as the polarities of the magnetic poles of the second magnetic pole pair (5 b) on both sides of the second moving plate (41), and the first moving plate (40) and the second moving plate (41) are magnetically connected.

4. A dual-diaphragm receiver according to claim 3, wherein the first moving plate (40) and the second moving plate (41) are respectively sleeved with at least one coil (51), and the first moving plate (40) and the second moving plate (41) are magnetically connected to the yoke assembly (53); alternatively, the first and second electrodes may be,

the first moving sheet (40) and the second moving sheet (41) are respectively sleeved with at least one coil (51), and the first moving sheet (40) and the second moving sheet (41) are in non-magnetic connection with the jaw iron assembly (53); alternatively, the first and second liquid crystal display panels may be,

only one of the first moving sheet (40) and the second moving sheet (41) is sleeved with at least one coil (51), and the first moving sheet (40) and the second moving sheet (41) are in non-magnetic connection with the jaw iron assembly (53).

5. A twin diaphragm receiver as claimed in claim 2, wherein the first diaphragm assembly (2) and the second diaphragm assembly (3) output different frequency response curves.

6. The dual-diaphragm receiver of claim 2, wherein the electromagnetic driving device (5) includes a yoke assembly (53) connected to the magnet assembly (52), the yoke 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 two sides of the middle magnetic conductive member (530), a first receiving hole (533) is formed between the middle magnetic conductive member (530) and the first magnetic conductive member (531), and a second receiving hole (534) is formed between the middle magnetic conductive member (530) and the second magnetic conductive member (532).

7. The dual-diaphragm receiver of claim 6, wherein the magnet assembly (52) comprises a first magnet (521) connected to the first magnetic conductive member (531), a second magnet (522) connected to the intermediate magnetic conductive member (530), and a third magnet (523) connected to the second magnetic conductive member (532), two poles of the second magnet (522) are respectively located in the first accommodating hole (533) and the second accommodating hole (534), the first magnet (521) and the second magnet (522) are oppositely arranged in terms of different poles, and the oppositely arranged poles of the two magnets form the first pole pair (5 a), the second magnet (522) and the third magnet (523) are oppositely arranged in terms of different poles, and the oppositely arranged poles of the two magnets form the second pole pair (5 b).

8. The dual-diaphragm receiver of claim 6, wherein the magnet assembly (52) comprises 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 two sides of the middle magnetic conductive member (530), the first magnet (521) is connected to the first magnetic conductive member (531) and is opposite to the opposite pole of the second magnet (522), the opposite poles of the first magnet and the second magnet form the first magnetic pole pair (5 a), the fourth magnet (524) is connected to the second magnetic conductive member (532) and is opposite to the opposite pole of the third magnet (523), and the opposite poles of the fourth magnet and the second magnet form the second magnetic pole pair (5 b).

9. A dual-diaphragm receiver according to claim 6, wherein the coil (5) is connected to the magnet assembly (52) and/or the yoke assembly (53), and the electromagnetic drive (5) is connected to the housing assembly (1) via the intermediate magnetic conductor (530).

10. The dual-diaphragm receiver of claim 9, wherein the housing assembly (1) is provided with a positioning hole (15) communicating with the back cavity (12), and the intermediate magnetic conductive member (530) is mounted in the positioning hole (15).

11. The dual-diaphragm receiver of claim 10, wherein the housing assembly (1) comprises a first housing (16) and a second housing (17) arranged along the height direction thereof, the first housing (16) and the second housing (17) are each provided with a part of the positioning hole (15), and the positioning holes (15) are formed by splicing the first housing (16) and the second housing (17) after the first housing (16) and the second housing (17) are connected; alternatively, the first and second electrodes may be,

the shell assembly (1) comprises a front shell (18) and a rear shell (19) which are arranged along the length direction of the shell assembly, the front shell (18) and the rear shell (19) are respectively provided with a part of the positioning hole (15), and the positioning holes (15) are formed by splicing after the front shell (18) and the rear shell (19) are connected.

12. The dual-diaphragm receiver of claim 6, wherein the housing assembly (1) comprises a first housing (16) and a second housing (17), and an outer edge of the intermediate magnetic conductive member (530) is sandwiched between the first housing (16) and the second housing (17).

13. The dual-diaphragm receiver of claim 12, wherein the first moving plate (40) and the second moving plate (41) are connected to the intermediate magnetic conductive member (530).

14. The dual diaphragm receiver of any of claims 2 to 12, wherein the armature (4) comprises a connecting portion (42) integrally formed with the first moving plate (40) and the second moving plate (41), and at least one of the first moving plate (40), the second moving plate (41) and the connecting portion (42) is connected to the coil (51) and/or the housing assembly (1).

15. A twin-diaphragm receiver as claimed in any of claims 2 to 12, characterized in that it further comprises an armature support (7) connected to the armature (4), the armature support (7) being connected to the coil (51) and/or the housing component (1).

16. The dual diaphragm receiver of claim 15, wherein the first moving plate (40) and the second moving plate (41) are connected to the armature holder (7); alternatively, the first and second electrodes may be,

the armature (4) comprises a connecting part (42) which is integrally formed with the first moving piece (40) and the second moving piece (41), and at least one of the connecting part (42), the first moving piece (40) and the second moving piece (41) is connected with the armature bracket (7).

17. The dual diaphragm receiver of any of claims 1 to 13, wherein the housing assembly (1) is provided with a first sound outlet opening (13) communicating with the first front chamber (10) and a second sound outlet opening (14) communicating with the second front chamber (11), and wherein the dual diaphragm receiver further comprises a sound outlet tube (6) connected to the housing assembly (1) and covering the first sound outlet opening (13) and the second sound outlet opening (14).

18. The twin diaphragm receiver according to any one of claims 1 to 13, wherein each of the first diaphragm assembly (2) and the second diaphragm assembly (3) comprises an annular outer frame (30) connected to the housing assembly (1), a vibration plate (31) disposed in the outer frame (30) and having one end hinged to the outer frame (30), and a membrane (32) connected to the outer frame (30) and the vibration plate (31), the membrane (32) covering at least a gap between the vibration plate (31) and the outer frame (30), and the first motion plate (40) and the vibration plate (31) of the first diaphragm assembly (2) and the second motion plate (41) and the vibration plate (31) of the second diaphragm assembly (3) are connected by a connecting rod (43).

19. The dual-diaphragm receiver of any of claims 1 to 13, wherein the housing assembly (1) is provided with a through-hole (120) communicating with the back chamber (12).

20. The twin diaphragm receiver of any of claims 1 through 13, wherein when the first moving plate (40) and the second moving plate (41) vibrate simultaneously, the vibration directions of the two are opposite.

21. An electronic device, characterized in that it comprises a dual-diaphragm receiver as claimed in any of claims 1 to 20.