A receiver

Abstract

The present invention discloses a receiver, comprising a shell having a hollow cavity; a first pronunciation membrane installed on the shell, the first pronunciation membrane divides the hollow cavity into a first cavity and a second cavity; a main vibration component installed in the second cavity, the main vibration component divides the second cavity into a main sound cavity and a mounting cavity; a first sound outlet hole and a second sound outlet hole are respectively provided on the wall surface of the shell corresponding to the main sound cavity and the first cavity; and a driving mechanism is arranged in the second inner cavity. The driving mechanism drives the main vibration component to vibrate, and the vibration drives the first pronunciation membrane to vibrate through the air in the main sound cavity; the sounds generated by the main vibration component and the first pronunciation membrane converge together, and the vibration of the first pronunciation membrane maintains a certain lag compared with the main vibration component, so that the sound generated by the first pronunciation membrane and the sound generated by the main vibration component produce a reverberation effect, thereby improving the low-frequency characteristics of the receiver and increasing the fullness and depth of the sound.

Description

Technical Field

[0001] The invention belongs to the technical field of electroacoustic conversion, and in particular relates to a receiver. Background Art

[0002] A receiver, also called an earpiece, is an electroacoustic device that converts audio electrical signals into sound signals without sound leakage. It is widely used in communication terminal devices such as mobile phones, landlines and hearing aids to achieve audio (voice, music) playback. The main principle of the receiver is to use electromagnetic induction and piezoelectric effect. There are also capacitive headphones that use the principle of capacitors, and receivers that use the principle of electromagnetic induction mainly include moving iron receivers and dynamic coil receivers. Most of the existing moving iron receiver structures are like a receiver with a modified shell disclosed in Chinese patent document CN103747374A, which includes a shell, a diaphragm and an electromagnetic drive mechanism. The diaphragm is arranged in the shell and divides the inner cavity of the shell into a front cavity and a rear cavity, and the electromagnetic drive mechanism is fixed in the rear cavity.

[0003] The electromagnetic drive mechanism includes a transmission rod, an armature, two permanent magnets and a coil; one end of the armature is fixed on the inner wall of the side wall of the shell, and the other end is connected to the diaphragm through the transmission rod; the coil is sleeved on the armature and close to the connection between the armature and the shell, and the two permanent magnets are respectively located on the upper and lower sides of the end of the armature close to the transmission rod and fixed on the inner wall of the shell. In a receiver of this structure, when alternating current is passed through the coil, the coil generates an alternating magnetic field, and the armature is magnetized by the alternating magnetic field to generate magnetic poles with alternating sizes and directions. Under the action of the fixed magnetic field of the permanent magnet, the armature generates vibrations of different frequencies and amplitudes, driving the diaphragm to produce sound.

[0004] However, the receiver of the above structure, like other receivers in the prior art, has only one sound cavity, and the sound waves it produces are mainly in the mid-to-high frequency band, and its ability to produce low-frequency sound waves is poor, which ultimately leads to poor low-frequency characteristics of the receiver of this structure. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is that the low-frequency characteristics of the existing receiver are relatively poor.

[0006] To this end, the present invention provides a receiver, comprising

[0007] a housing having a hollow cavity;

[0008] A diaphragm mechanism, comprising at least one first sound-generating diaphragm mounted on the housing, the first sound-generating diaphragm dividing the hollow cavity into a first cavity and a second cavity that are not connected; and a main vibration component mounted in the second cavity, the main vibration component having a vibration plate sealed and mounted on the housing;

[0009] The main vibration component divides the second cavity into a main sound cavity and an installation cavity which are parallel to and not connected to the first cavity, and the main sound cavity is close to the first pronunciation membrane; the first sound outlet hole and the second sound outlet hole are respectively opened on the wall surface of the shell corresponding to the main sound cavity and the first cavity;

[0010] The driving mechanism is arranged in the second inner cavity, and is used to drive the vibration plate to perform reciprocating vibration along a direction perpendicular to the arrangement direction of the diaphragm mechanism.

[0011] Preferably, in the above receiver, the first pronunciation membrane is at least two layers, and two adjacent layers of the first pronunciation membrane are separated by a required distance;

[0012] At least two layers of the first sound-generating membranes divide the first cavity into at least two secondary sound-generating cavities that are parallel to the main sound-generating cavity and are not connected to each other; the second sound outlet holes are respectively opened on the wall surfaces of the shell corresponding to the secondary sound-generating cavities.

[0013] Preferably, the above-mentioned receiver also includes an isolation component corresponding one-to-one to the first pronunciation membrane; the isolation component is installed on the inner wall surface of the shell, and is provided with a first through hole connecting the first cavity with the main sound cavity, and the first pronunciation membrane is installed on the shell by being installed on the first through hole.

[0014] Preferably, in the above-mentioned receiver, the main vibration assembly further comprises a fixed frame, one end of the vibration plate is fixed on the fixed frame, and the other end is suspended in the inner cavity of the fixed frame; and a second pronunciation membrane installed on the fixed frame and sealingly covering at least the gap between the fixed frame and the vibration plate;

[0015] The fixing frame is sealingly mounted on the outer shell, or at least one end of the fixing frame is bent toward the first cavity and sealingly fixed to the first pronunciation membrane or the isolation component, and the end face of the outer peripheral edge of the fixing frame is sealingly mounted on the inner wall surface of the outer shell.

[0016] Preferably, in the above-mentioned receiver, the driving mechanism includes at least one first permanent magnet mounted on the housing and located on either side of the main vibration component; a soft magnet with one end fixed to the housing and the other end fixed to the vibration plate, the soft magnet being opposite to the first permanent magnet; and a coil sleeved on the soft magnet.

[0017] Further preferably, in the above-mentioned receiver, the driving mechanism further comprises a second permanent magnet, and the second permanent magnet and the first permanent magnet are respectively located in the main sound cavity and the installation cavity; the second permanent magnet and the first permanent magnet are opposite to each other in one-to-one relationship and the polarities of the ends facing each other are opposite;

[0018] The soft magnet and the coil are located in the installation cavity; the main vibration component and the soft magnet are located between the second permanent magnet and the first permanent magnet; along the vibration direction of the vibration plate, a required first gap is reserved between the main vibration component and the second permanent magnet, and a required second gap is reserved between the soft magnet and the first permanent magnet.

[0019] Further preferably, in the above-mentioned receiver, when one side wall of the fixing frame is bent toward the first cavity and fixed on the first pronunciation membrane or the isolation component;

[0020] Along the arrangement direction of the diaphragm mechanism, the coil is located in a space enclosed between the bent side wall of the fixing frame and the outer shell.

[0021] Preferably, in the above-mentioned receiver, the soft magnetic body includes a mounting portion mounted on the housing; an extension portion formed on the mounting portion and extending in a setting direction parallel to the vibration plate; and a connecting portion fixed to the extension portion, the other end of the connecting portion being fixed to the vibration plate; along the vibration direction of the vibration plate, a required third gap is reserved between the extension portion and the vibration plate.

[0022] Further preferably, in the above-mentioned receiver, the connecting portion is perpendicular to the extending portion.

[0023] Preferably, in the above-mentioned receiver, the driving mechanism is a piezoelectric vibrator suspended and installed in the installation cavity; the piezoelectric vibrator is connected to the vibration plate through a connecting member.

[0024] Preferably, in the above-mentioned receiver, the shell includes a first shell body surrounded by a first bottom surface and side walls, and a second shell body surrounded by a second bottom surface and side walls, and the opening of the first shell body is buckled on the opening of the second shell body to form the hollow cavity.

[0025] The technical solution provided by the present invention has the following advantages:

[0026] 1. The receiver provided by the present invention comprises a housing, a diaphragm mechanism and a driving mechanism. The diaphragm mechanism comprises a first sound-generating membrane and a main vibration component; the hollow cavity of the housing is divided into a first cavity and a second cavity which are not connected by the first sound-generating membrane; the second cavity is divided into a main sound-generating cavity and a mounting cavity which are not connected by the main vibration component; a first sound outlet hole and a second sound outlet hole are respectively provided on the wall surface of the housing corresponding to the main sound-generating cavity and the first cavity. The driving mechanism drives the main vibration component to vibrate, and the vibration of the main vibration component drives the air in the main sound-generating cavity to be compressed or expanded, resulting in a change in air pressure. Driven by the changing air pressure, the first sound-generating membrane vibrates; the vibration of the main vibration component and the first sound-generating membrane generates sound in the main sound-generating cavity and the first cavity respectively, and the two sounds converge after passing through the first sound outlet hole and the second sound outlet hole to generate a mixed sound transmitted to the outside.

[0027] The vibration frequency of the first pronunciation membrane is consistent with the vibration frequency of the main vibration component, but the main vibration component drives the first pronunciation membrane to vibrate through air, so there is a certain lag in the vibration of the first pronunciation membrane compared to the main vibration component. This makes the sound generated by the first pronunciation membrane reverberate with the sound generated by the main vibration component to improve the low-frequency characteristics of the receiver, thereby improving the fullness and depth of the sound produced by the receiver.

[0028] 2. In the receiver provided by the present invention, the first pronunciation membrane is composed of at least two layers, and the at least two layers of the first pronunciation membrane divide the first cavity into at least two sub-sound cavities, and each sub-sound cavity is provided with a second sound outlet.

[0029] In a receiver of this structure, the vibration of the main vibration component passes through the main sound-emitting cavity in turn, and is gradually transmitted to the first pronunciation membranes corresponding to each of the multiple secondary sound-emitting cavities. The sounds generated by the vibrations of the multiple first pronunciation membranes are combined with the sound generated by the main vibration component through the second sound outlet, thereby strengthening the reverberation effect between the sounds generated by the main vibration component and the multiple layers of first pronunciation membranes, and more effectively improving the low-frequency characteristics of the receiver.

[0030] 3. The receiver provided by the present invention further includes an isolation component, on which a first through hole is formed, and the first pronunciation membrane is installed on the housing by being installed on the first through hole. Because the first pronunciation membrane is an elastic film, it is difficult to directly install the first pronunciation membrane on the housing during the assembly of the receiver. Installing the first pronunciation membrane on the housing through the isolation component makes the assembly process simpler.

[0031] 4. The receiver provided by the present invention, the main vibration component also includes a fixed frame and a second sound-generating membrane, one end of the vibration plate is fixed to the fixed frame, and the other end is suspended in the inner cavity of the fixed frame, and the second sound-generating membrane is installed on the fixed frame and seals and covers the gap between the fixed frame and the vibration plate. One end of the vibration plate is a fixed end, and the other end is a free end, which not only ensures that the main vibration component divides the second cavity into a main sound-generating cavity and an installation cavity that are independent and unconnected, but also improves the degree of freedom of the vibration plate, and under the same electromagnetic driving force, increases the vibration amplitude of the vibration plate, thereby improving the sound of the receiver.

[0032] 5. The receiver provided by the present invention has a driving mechanism comprising at least one first permanent magnet, a second permanent magnet corresponding to the first permanent magnet, a soft magnet and a coil. When alternating current passes through the coil, an alternating magnetic field is generated. Under the magnetization of the alternating magnetic field, the alternating magnetic field generated by the coil is concentrated on the soft magnet. The soft magnet is opposite to the permanent magnet, so that the soft magnet vibrates under the action of the fixed magnetic fields of the first permanent magnet and the second permanent magnet, thereby driving the main vibration component to vibrate.

[0033] 6. In the receiver provided by the present invention, one end of the fixed frame is bent toward the first cavity and sealed and fixed on the first sound-producing membrane or the isolation component; along the setting direction of the diaphragm mechanism, the coil is arranged in the space enclosed by the bent portion of the fixed frame and the outer shell, and the height of the space is greater than the height of the rest of the installation cavity. By installing a larger coil in the space, the height of the installation cavity can be reduced, thereby making the entire receiver thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A cross-sectional schematic diagram of a receiver provided in Embodiment 1 of the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the main vibration component of the receiver;

[0037] Figure 3 for Figure 1 A top view of the soft magnetic body of the receiver;

[0038] Figure 4 A top view of the soft magnetic body provided in Example 5 of the present invention;

[0039] Description of reference numerals:

[0040] 1-housing; 11-first housing; 12-second housing;

[0041] 2-hollow cavity; 21-first cavity; 22-second cavity; 221-main sound cavity; 222-installation cavity;

[0042] 31-first pronunciation membrane; 32-isolation component; 321-first through hole; 33-main vibration component; 331-vibration plate; 332-fixing frame; 3321-bending part; 333-second pronunciation membrane;

[0043] 4-driving mechanism; 41-first permanent magnet; 42-second permanent magnet; 43-soft magnet; 431-installation portion; 432-extension portion; 433-connection portion; 44-coil;

[0044] 5-First sound hole;

[0045] 6- Second sound hole;

[0046] 7- Sound pipe. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] Example 1

[0052] This embodiment provides a receiver, such as Figure 1 As shown, it includes a housing 1, a diaphragm mechanism, a driving mechanism 4, a first sound outlet 5 and a second sound outlet 6. The diaphragm mechanism includes a main vibration component 33, a first sound-generating membrane 31 and an isolation component 32.

[0053] The housing 1 has a hollow cavity 2; a first pronunciation membrane 31 is fixed on the inner wall of the housing 1, dividing the hollow cavity 2 into a first cavity 21 and a second cavity 22 which are not connected, and is preferably an elastic film; a main vibration component 33 is installed in the second inner cavity, dividing the second inner cavity into a main sound cavity 221 and a mounting cavity 222 which are parallel to the first cavity 21 and are not connected, the main sound cavity 221 is close to one side of the first pronunciation membrane 31; correspondingly, the mounting cavity 222 is away from one side of the first pronunciation membrane 31; a first sound outlet 5 and a second sound outlet 6 are respectively opened on the wall of the housing 1 corresponding to the main sound cavity 221 and the first cavity 21;

[0054] The driving mechanism 4 is arranged in the second inner cavity, and is used to drive the main vibration component 33 to reciprocate in a direction perpendicular to the setting of the diaphragm mechanism. The driving mechanism 4 drives the main vibration component 33 to vibrate, and the main vibration component 33 in turn drives the air in the main sound cavity 221 to be compressed or expanded, resulting in changes in air pressure. Driven by the changing air pressure, the first pronunciation membrane 31 vibrates; the vibrations of the main vibration component 33 and the first pronunciation membrane 31 respectively generate sounds in the main sound cavity 221 and the first cavity 21, and these two sounds converge together after passing through the first sound outlet 5 and the second sound outlet 6, generating a mixed sound that is transmitted to the outside. The vibration frequency of the first pronunciation membrane 31 is consistent with the vibration frequency of the main vibration component 33, but the main vibration component 33 drives the first pronunciation membrane 31 to vibrate through air, so the vibration of the first pronunciation membrane 31 has a certain lag compared with the main vibration component 33. This makes the sound generated by the first pronunciation membrane 31 and the sound generated by the main vibration component 33 reverberate, thereby improving the low-frequency characteristics of the receiver, thereby improving the fullness and depth of the sound produced by the receiver.

[0055] like Figure 1As shown, the diaphragm mechanism also includes an isolation component 32 corresponding to the first pronunciation membrane 31 one by one. The isolation component is in the form of a plate. The outer edge of the isolation component 32 is sealed and installed on the inner wall surface of the shell 1. A first through hole 321 is opened thereon to connect the first cavity 21 with the main sound cavity 221. The first pronunciation membrane 31 is sealed and installed on the first through hole 321 with its edge and is fixed on the inner wall surface of the shell 1. The main vibration component 33 still transmits the vibration to the first pronunciation membrane 31 through the air in the main sound cavity 221.

[0056] The first pronunciation membrane 31 is an elastic film. During the assembly of the receiver, it is difficult to directly seal the first pronunciation membrane 31 onto the inner wall surface of the housing 1. Sealing the first pronunciation membrane 31 onto the housing 1 through the isolation component 32 can reduce the difficulty of assembly and improve production efficiency.

[0057] like Figure 1 and Figure 2 As shown, the main vibration component 33 includes a vibration plate 331 , a fixing frame 332 and a second pronunciation membrane 333 .

[0058] One end of the main vibration component 33 is bent toward the first cavity 21 and sealed and fixed on the isolation component 32 to form a bent portion 3321. The bent portion 3321 forms a 90-degree angle with the main body of the fixed frame 332. The end faces of the remaining peripheral edges of the fixed frame are sealed and fixed on the inner wall surface of the outer shell 1. Viewed from the side, the entire fixed frame 332 is L-shaped.

[0059] One end of the vibration plate 331 is fixed on one end of the fixed frame 332 having a bent portion 3321 as a fixed end, and the other end is suspended in the inner cavity of the fixed frame 332 as a free end. A rectangular through hole is also provided on the vibration plate 331 near the connection between the vibration plate 331 and the fixed frame 332; the second pronunciation membrane 333 is preferably an elastic film, which is attached to one side surface of the fixed frame 332 and the vibration plate 331 located in the main sound cavity 221, sealing and covering the gap between the fixed frame 332 and the vibration plate 331 and the rectangular through hole on the vibration plate 331.

[0060] The sealed second pronunciation membrane 333 ensures that the main vibration component 33 can divide the second cavity 22 into a main sound cavity 221 and an installation cavity 222 which are independent and non-connected to each other, thereby ensuring the sound quality of the two cavities; at the same time, the structure of the fixed frame 332 and the vibration plate 331 also improves the degree of freedom of the vibration plate 331, so that the vibration plate 331 can achieve a larger vibration amplitude under the same electromagnetic driving force.

[0061] like Figure 1 As shown, the driving mechanism 4 includes a first permanent magnet 41 , a second permanent magnet 42 , a soft magnet 43 and a coil 44 .

[0062] The bent portion 3321 of the fixed frame 332 and the side wall of the shell 1 along the setting direction of the isolation component 32 form a clearance space. The coil 44 is fixed on the inner wall surface of the shell 1 corresponding to the mounting cavity 222 and is located in the clearance space. The height of the clearance space is greater than the height of the remaining part of the mounting cavity 222. By installing a larger coil 44 in the clearance space, the height of the mounting cavity 222 can be reduced, thereby making the entire receiver thinner.

[0063] The soft magnetic body 43 passes through the inside of the coil 44 , one end of which is fixed on the inner wall surface of the housing 1 , and the other end of which is fixed on the surface of the vibration plate 331 facing the installation cavity 222 .

[0064] The first permanent magnet 41 is fixed on the inner wall surface of the shell 1 corresponding to the installation cavity 222, and the second permanent magnet 42 is arranged in the main sound cavity 221 and installed on the side surface of the isolation component 32 facing the main sound cavity 221; the first permanent magnet 41 and the second permanent magnet 42 are arranged opposite to each other and the sides facing each other have opposite polarities, and the other end of the soft magnet 43 is located between the first permanent magnet 41 and the second permanent magnet 42; along the vibration direction of the main vibration component 33, a required second gap is provided between the first permanent magnet 41 and the soft magnet 43, and a required first gap is provided between the second permanent magnet 42 and the first pronunciation membrane 31, and the first gap and the second gap reserve sufficient space for the vibration of the main vibration component 33, so that the first permanent magnet 41 and the second permanent magnet 42 will not interfere with the vibration of the main vibration component 33.

[0065] When an external audio signal is applied to the coil 44, that is, alternating current is passed through the coil 44, the coil 44 will generate an alternating magnetic field. Under the magnetization of the alternating magnetic field, the alternating magnetic field generated by the coil is concentrated on the soft magnet and the polarities at both ends of the soft magnet 43 will change alternately; the fixed magnetic field direction common to the first permanent magnet 41 and the second permanent magnet 42 is unchanged, so the end of the soft magnet 43 between the first permanent magnet 41 and the second permanent magnet 42 will be subjected to the force of the constantly changing direction and size of the fixed magnetic field to generate vibration, and then drive the main vibration component 33 to vibrate.

[0066] like Figure 1 and Figure 3 As shown, the soft magnetic body 43 includes a mounting portion 431, an extension portion 432, and a connecting portion 433. The mounting portion 431 is U-shaped and fixed on the inner wall surface of the outer shell 1. A strip-shaped extension portion 432 is also formed on the mounting portion 431. The extension portion 432 extends outward along a setting direction parallel to the vibration plate 331. A connecting portion 433 is formed at the outermost end of the extension portion 432. The connecting portion 433 is preferably a columnar structure perpendicular to the extension portion 432. The other end of the connecting portion 433 is connected to the vibration plate 331, and the extension portion 432 is fixed to the vibration plate 331 through the connecting portion 433.

[0067] Along the vibration direction of the vibration plate 331 , the arrangement of the connecting portion 433 ensures that a required third gap is reserved between the extending portion 432 and the vibration plate 331 , thereby preventing the extending portion 432 from interfering with the vibration of the vibration plate 331 .

[0068] like Figure 1 As shown, the housing 1 includes a first housing 11 and a second housing 12. The first housing 11 is composed of a first bottom surface and a side wall; the second housing 12 is composed of a second bottom surface and a side wall. The opening of the first housing 11 is buckled and fixed to the opening of the second housing 12 to form a hollow cavity 2 of the entire housing 1.

[0069] The first shell 11, the isolation component 32 and the first pronunciation membrane 31 together form a first cavity 21; the second shell 12, the isolation component 32 and the first pronunciation membrane 31 together form a second cavity 22; the main vibration component 33, the isolation component 32, the first pronunciation membrane 31 and part of the inner wall surface of the second shell 12 together form a main sound cavity 221; the main vibration component 33 and the rest of the inner wall surface of the second shell 12 together form an installation cavity 222.

[0070] The edge of the isolation component 32 is sealed and installed on the outer end surface of the opening of the first shell 11 or the outer end surface of the opening of the second shell 12; the remaining side walls of the fixed frame 332 are sealed and fixed on the inner wall surface of the second shell 12; the mounting portion 431, the coil 44 and the first permanent magnet 41 are all fixed on the inner wall surface of the second shell 12.

[0071] The second sound outlet hole 6 is provided on the wall surface of the first shell 11; the first sound outlet hole 5 is provided on the wall surface of the second shell 12 corresponding to the main sound cavity 221. The first sound outlet hole 5 and the second sound outlet hole 6 are located on the same side of the shell 1 and close to each other. A sound outlet tube 7 is also installed on the wall surface of the shell 1. The first sound outlet hole 5 and the second sound outlet hole 6 are both located inside the sound outlet tube 7. The sound outlet tube 7 can more effectively gather the sounds emitted by the first sound outlet tube 7 and the second sound outlet tube 7 together.

[0072] The sealing installation, fixing, mounting and other connection methods mentioned above are all welding, gluing and other methods.

[0073] Example 2

[0074] This embodiment provides a receiver, which is different from the receiver provided in Embodiment 1 in that the first pronunciation membrane 31 has two, three, four or more layers, and adjacent first pronunciation membranes 31 are arranged parallel to each other and separated by a required distance.

[0075] Each first pronunciation membrane 31 is installed on the outer shell 1 through an isolation component 32. The isolation component 32 has a first through hole 321. The first pronunciation membrane 31 is sealed on the first through hole 321. The edge of the isolation component 32 is sealed on the inner wall surface of the first shell 11, the outer end surface of the opening of the first shell 11, or the outer end surface of the opening of the second shell 12.

[0076] The innermost first pronunciation membrane 31, the isolation component 32, the main vibration assembly 33 and the inner wall surface of part of the second shell 12 form a main sound cavity 221; the adjacent first pronunciation membrane 31 and its corresponding isolation component 32, and the inner wall surface of the first shell 11 sandwiched between the two isolation components 32 form a secondary sound cavity; the outermost first pronunciation membrane 31 and its corresponding isolation component 32 and part of the first shell 11 form a secondary sound cavity; the first shell 11 is provided with a second sound outlet 6 on the wall surface corresponding to each secondary sound cavity. That is, by providing n layers of isolation components 32 and first pronunciation membranes 31, the first cavity 21 is divided into n+1 secondary sound cavities, where n is a natural number greater than or equal to 1.

[0077] The vibration of the main vibration component 33 is transmitted to the first pronunciation membrane 31 corresponding to each cavity in turn through the main sound cavity 221 and multiple secondary sound cavities. The sounds generated by the vibration of multiple first pronunciation membranes 31 are merged with the sound generated by the main vibration component 33 through the second sound outlet 6, thereby strengthening the reverberation effect between the sounds respectively generated by the main vibration component 33 and the first pronunciation membrane 31, and more effectively improving the low-frequency characteristics of the receiver.

[0078] Example 3

[0079] This embodiment provides a receiver, which is different from the receiver provided in Embodiment 1 or 2 in that the housing 1 can be composed of a plurality of shells such as a first shell 11, a second shell 12, and a third shell, and openings are provided at both ends of the shell in the middle, and the specific number is determined by production and processing needs.

[0080] Example 4

[0081] This embodiment provides a receiver, which is different from the receiver provided in any of Embodiments 1-3 in that the bending portion 3321 of the fixed frame 332 can be directly connected to the first pronunciation membrane 31; further, the angle formed by the bending portion 3321 and the main body of the fixed frame 332 can be any angle such as 20 degrees and 30 degrees.

[0082] As a modified embodiment, the isolation member 32 may not be provided, and the first sound producing membrane 31 may be directly and sealedly mounted on the inner wall surface of the housing 1 .

[0083] Example 5

[0084] This embodiment provides a receiver, which is different from the receiver provided in any of Embodiments 1-4 in that the connecting portion 433 can be at any angle of 20 degrees, 30 degrees, etc. with the extending portion 432, and it is only necessary to ensure that a third gap is reserved between the extending portion 432 and the main vibration component 33.

[0085] As a further variation, Figure 4 As shown, the mounting portion 431 is a straight-line structure.

[0086] As an alternative embodiment, the coil 44 may not be arranged in the clearance space between the bending portion 3321 and the inner wall of the outer shell 1, but may be arranged at other positions in the installation cavity 222. It is only necessary to drive the vibration plate 331 to vibrate reciprocatingly under the action of the alternating magnetic field generated by the coil 44 and the fixed magnetic field of the two permanent magnets.

[0087] As a further alternative embodiment, the number of the second permanent magnets 42 can be two, three, etc., and the number of the first permanent magnets 41 corresponds thereto; alternatively, only the first permanent magnet 41 or only the second permanent magnet 42 can be provided; further, the number of the first permanent magnet 41 or the second permanent magnet 42 can be one, two, three, etc.

[0088] As a further alternative embodiment, the soft magnet 43 and the coil 44 may also be arranged in the main sound cavity 221. Alternatively, the driving mechanism 4 is not provided with the soft magnet 43, but only with the coil 44 and the permanent magnet, and when the permanent magnet is fixed on the vibration plate 331 and opposite to the coil 44, the vibration plate 331 can also be driven to vibrate back and forth.

[0089] Example 6

[0090] The present embodiment provides a receiver, which is different from the receiver provided in any of the embodiments 1-5 only in that the driving mechanism 4 is different. The driving mechanism 4 in the present embodiment may be composed of a piezoelectric vibrator and a connector. The piezoelectric vibrator is suspended on the inner wall surface of the mounting cavity 222, and the piezoelectric vibrator is connected to the main vibration component 33 through the connector. When alternating current is passed through the piezoelectric vibrator, the piezoelectric vibrator itself will vibrate back and forth, and then drive the main vibration component 33 to vibrate through the connector.

[0091] Example 7

[0092] This embodiment provides a receiver, which is different from the structure of the receiver provided in any of Embodiments 1-6 in that at least one side wall of the fixing frame 332 is bent toward the installation cavity 222 and fixed on the inner wall surface of the shell 1; further, the fixing frame 332 is not provided with a bending portion 3321, and all its side walls are directly sealed and fixed on the inner wall surface of the shell 1.

[0093] As a further replaceable embodiment, the main vibration component 33 may not be provided with a fixing frame 332, one end of the vibration plate 331 is fixed on the inner wall surface of the outer shell 1 as a fixed end, and the other end is suspended in the second cavity 22 as a free end, and the gap between the vibration plate 331 and the inner wall surface of the outer shell 1 is sealed and covered by the second pronunciation membrane 333; further, the second pronunciation membrane 333 may not be provided, and the edge of the vibration plate 331 is directly sealed and fixed on the inner wall surface of the outer shell 1.

[0094] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A receiver, characterized in that: The receiver is a moving iron receiver, including A housing (1) having a hollow cavity (2); A diaphragm mechanism, comprising at least one first sound-generating diaphragm (31) mounted on the housing (1), the first sound-generating diaphragm (31) dividing the hollow cavity (2) into a first cavity (21) and a second cavity (22) that are not connected; and a main vibration component (33) mounted in the second cavity (22), the main vibration component (33) having a vibration plate (331) sealed and mounted on the housing (1); The main vibration component (33) divides the second cavity (22) into a main sound cavity (221) and an installation cavity (222) which are arranged side by side with the first cavity (21) and are not connected, the first cavity (21) and the main sound cavity (221) are arranged up and down, and the main sound cavity (221) is close to one side of the first pronunciation membrane (31); the first sound outlet (5) and the second sound outlet (6) are respectively opened on the wall surface of the housing (1) corresponding to the main sound cavity (221) and the first cavity (21); an isolation component (32) arranged in one-to-one correspondence with the first sound-generating membrane (31); the isolation component (32) is mounted on the inner wall surface of the housing (1), and is provided with a first through hole (321) for connecting the first cavity (21) with the main sound-generating cavity (221); the first sound-generating membrane (31) is mounted on the housing (1) by being mounted on the first through hole (321); The main vibration component (33) further comprises a fixing frame (332), one end of the vibration plate (331) being fixed on the fixing frame (332), and the other end being suspended in the inner cavity of the fixing frame (332); and a second sound-generating membrane (333) mounted on the fixing frame (332) and sealingly covering at least the gap between the fixing frame (332) and the vibration plate (331); At least one end of the fixing frame (332) is bent toward the first cavity (21) and sealed and fixed on the first sound-generating membrane (31) or the isolation component (32) to form a bent portion (3321); the end surface of the outer peripheral edge of the fixing frame (332) is sealed and mounted on the inner wall surface of the outer shell (1); A drive mechanism (4) is arranged in the second cavity (22) and is used to drive the vibration plate (331) to reciprocate along a direction perpendicular to the arrangement of the diaphragm mechanism, the drive mechanism (4) comprising a first permanent magnet (41), a second permanent magnet (42), a soft magnet (43) and a coil (44), along the arrangement direction of the isolation component (32), the bent portion (3321) of the fixing frame (332) and the side wall of the housing (1) form a clearance space, the coil (44) is fixed on the inner wall surface of the housing (1) corresponding to the installation cavity (222) and is located in the clearance space, and the height of the clearance space is greater than the height of the remaining part of the installation cavity (222); The main vibration component (33) vibrates to compress or expand the air in the main sound-generating cavity (221), and the change in air pressure drives the first sound-generating membrane (31) to vibrate.

2. The receiver according to claim 1, characterized in that The first sound-generating membrane (31) comprises at least two layers, and two adjacent layers of the first sound-generating membrane (31) are spaced apart by a required distance; At least two layers of the first sound-generating membranes (31) divide the first cavity (21) into at least two secondary sound-generating cavities that are arranged side by side with the main sound-generating cavity (221) and are not connected to each other; and the second sound-generating holes (6) are respectively provided on the wall surfaces of the housing (1) corresponding to the secondary sound-generating cavities.

3. The receiver according to claim 1 or 2, characterized in that: At least one first permanent magnet (41) is mounted on the housing (1) and is located on either side of the main vibration component (33); One end of the soft magnetic body (43) is fixed on the housing (1), and the other end is fixed on the vibration plate (331), and the soft magnetic body (43) is opposite to the first permanent magnet (41); The coil (44) is sleeved on the soft magnetic body (43).

4. The receiver according to claim 3, characterized in that: The second permanent magnet (42) and the first permanent magnet (41) are respectively located in the main sound-emitting cavity (221) and the installation cavity (222); the second permanent magnet (42) and the first permanent magnet (41) are opposite to each other in a one-to-one relationship and the polarities of the ends facing each other are opposite; The soft magnet (43) and the coil (44) are located in the installation cavity (222); the main vibration component (33) and the soft magnet (43) are located between the second permanent magnet (42) and the first permanent magnet (41); along the vibration direction of the vibration plate (331), a required first gap is reserved between the main vibration component (33) and the second permanent magnet (42), and a required second gap is reserved between the soft magnet (43) and the first permanent magnet (41).

5. The receiver according to claim 3, characterized in that: The soft magnetic body (43) comprises a mounting portion (431) mounted on the housing (1); an extension portion (432) formed on the mounting portion (431) and extending in a direction parallel to the setting direction of the vibration plate (331); and a connection portion (433) fixed to the extension portion (432), the other end of the connection portion (433) being fixed to the vibration plate (331); along the vibration direction of the vibration plate (331), a required third gap is reserved between the extension portion (432) and the vibration plate (331).

6. The receiver according to claim 5, characterized in that The connecting portion (433) is perpendicular to the extending portion (432).

7. The receiver according to claim 1 or 2, characterized in that: The housing (1) comprises a first shell (11) formed by a first bottom surface and side walls, and a second shell (12) formed by a second bottom surface and side walls, wherein an opening of the first shell (11) is buckled onto an opening of the second shell (12) to form the hollow cavity (2).

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